Agenda packet, regular meeting — San Ramon City Council, February 25, 2025 (part 1 of 4)

CITY COUNCIL AGENDA
February 25, 2025

WE PROVIDE EFFICIENT DELIVERY OF QUALITY PUBLIC SERVICES THAT ARE

ESSENTIAL TO THOSE WHO LIVE AND WORK IN SAN RAMON
Mark Armstrong, Mayor • Sridhar Verose, Vice Mayor
Richard Adler, Councilmember • Robert Jweinat, Councilmember • Marisol Rubio, Councilmember Council Chamber
7000 Bollinger Canyon Road
REGULAR MEETING – 7:00 PM
Agenda Questions: Please contact the City Clerk (925) 973-2539 or [email protected] Please refer to the end of the agenda to review options for participation in the meeting.

Unless stated otherwise on the agenda, every item on the agenda is exempt from CEQA Guidelines Sections 15060(c), 15061(b)(3), 15273, 15378, 15301, 15323 and/or Public Resources Code Section 21065.

1. CALL TO ORDER/ROLL CALL

2. PLEDGE OF ALLEGIANCE

3. ANNOUNCEMENTS

3.1 Changes and Additions to the Agenda

3.2 If you wish to speak under Public Comment or regarding an agenda item please fill out a speaker card located in the back of the room and submit it to the City Clerk.

4. PUBLIC COMMENT
Members of the audience are encouraged to address the City Council on any non-agenda item relating to the business of the City Council. Comments are limited to three (3) minutes, or less time if a large number of speakers are anticipated. A speaker may not allocate their time to another speaker. All remarks shall be addressed to the City Council.

Comments from the public on non-agenda items may also be submitted by email to [email protected]. Comments received by email will not be read aloud; however, they will be forwarded to the Council for their consideration. If you wish to present your comments to the public, you may do so in-person during this Public Comment period. No Council action can be taken at this meeting on issues raised during public comment.

During public comment, members of the public are permitted to address the City Council only on the following:
 Any non-agenda item relating to the business of the City Council. 2 City Council Meeting – February 25, 2025
 Items that are on the Consent Calendar, including requests to pull an item from the consent calendar and the reason why you wish to pull the item or items. Please note that the decision to remove the item from the Consent Calendar is strictly at the discretion of the City Council.
 Requests for Future Agenda Items.
 Special Presentation Items under Section 6 of tonight’s Agenda.  Items that are not on the agenda and are within the City Council’s jurisdiction.

5. CONSENT CALENDAR
Consent Calendar items are considered routine and are acted upon by the City Council with a single action. Members of the audience wishing to provide public input may request (by email to the City Clerk or under Item 4 Public Comment) that the City Council remove the item from the Consent Calendar. Members of the public may request that items be removed from the Consent Calendar, however, the decision to remove the item is solely at the discretion of the City Council.

With respect to the approval of resolutions and ordinances, the reading of the title thereto shall be deemed a motion to waive a reading of the complete resolution or ordinance and unless there is a request by a Council member that the resolution or ordinance be read in full, further reading of the resolution or ordinance shall be deemed waived by unanimous consent of the Council.

5.1 Minutes of the City Council and Planning Commission Joint Meeting - Feb 11, 2025 Recommendation: Accept Minutes

5.2 Minutes of the City Council Regular Meeting and Closed Session - Feb 11, 2025 Recommendation: Accept Minutes

5.3 Minutes of the City Council Goal Setting Workshop - Feb 15, 2025 Recommendation: Accept Minutes

5.4 Minutes of the City Council Special Meeting - Feb 19, 2025 Recommendation: Accept Minutes

5.5 Register of Demands as Presented by the City Treasurer (Period Ending January 31, 2025)
Recommendation: Approve Register of Demands

5.6 Resolution No. 2025-018 - Adopting Volume 1 and the City of San Ramon’s Portion of Volume 2 of the 2024 Contra Costa County Hazard Mitigation Plan Recommendation: Approve Resolution No. 2025-018

5.7 Resolution No. 2025-019 - Accepting the Work by Integra Construction Services, Inc. (C2023-004) for the Dougherty Station Community Arts Center Renovation Project (CIP 200004) as Complete and Authorizing the City Clerk to File a Notice of Completion with the Contra Costa County Clerk Recorder’s Office Recommendation: Approve Resolution No. 2025-019
3 City Council Meeting – February 25, 2025

5.8 Resolution No. 2025-020 - Accepting the Work by Miracle Construction Company, Inc., DBA Miracle Playsystems (C2024- 065) for Playground Equipment Replacement at Ramona Park, as Part of the Citywide Playground Upgrades Project (CIP 955423) as Complete, and Authorizing the City Clerk to File a Notice of Completion with the Contra Costa County Clerk Recorder's Office
Recommendation: Approve Resolution No. 2025-020

5.9 Resolution No. 2025-021 - Accepting the Work by Earl Adams Tile-Coping and Plastering, Inc. DBA Adams Pool Solutions (C2024-079) for the 25-Meter Lap Pool Replaster, as Part of the San Ramon Olympic Pool Equipment Replacement Project (CIP 925479) as Complete, and Authorizing the City Clerk to File a Notice of Completion with the Contra Costa County Clerk Recorder's Office Recommendation: Approve Resolution No. 2025-021

5.10 Resolution No. 2025-022 - Authorizing Approval of Purchases for the Provision of Industrial and Safety Supplies, Parts, Equipment, Materials, and ProductRelated Services with W.W. Grainger, Inc. for an Initial Two-Year Amount Not to Exceed $300,000 through December 31, 2027, with the Option to Renew the Agreement for Up to Two Additional One-Year Terms through December 31, 2029
Recommendation: Approve Resolution No. 2025-022

5.11 Resolution No. 2025-023 - Authorizing the Mayor to Execute an Agreement with JetMulch, Inc. for Pneumatic Delivery and Placement of Landscape Products for a Total Cumulative Five-Year Amount Not to Exceed $750,000 through June 30, 2030
Resolution No. 2025-024 - Authorizing the Mayor to Execute an Agreement with Applied Landscape Materials, Inc. for Pneumatic Delivery and Placement of Landscape Products for a Total Cumulative Five-Year Amount Not to Exceed $750,000 through June 30, 2030
Recommendation: Approve Resolution Nos. 2025-023 and 2025-024

5.12 Resolution No. 2025-025 - Authorizing the Mayor to Execute an Agreement with Commercial Pump Service, Inc. for Irrigation Booster Pump Maintenance, Repairs, and Replacements (CIP 955516) in an Amount Not to Exceed $500,000 for a One-Year Term Ending June 30, 2026, with the Option to Renew the Agreement for Up to Four Additional Successive One-Year Terms Successive One-Year Terms
Resolution No. 2025-2026 - Authorizing the Mayor to Execute an Agreement with Ace Armature & Motor Shops, Inc. DBA Ace Electric Motor & Pump, Co. for Irrigation Booster Pump Maintenance, Repairs, and Replacements (CIP 955516) in an Amount Not to Exceed $500,000 for a One-Year Term Ending June 30, 2026, with the Option to Renew the Agreement for Up to Four Additional Successive One-Year Terms
4 City Council Meeting – February 25, 2025
Resolution No. 2025-2027 - Authorizing the Mayor to Execute an Agreement with Bartley Pump PM, LLC DBA PumpMan NorCal for Irrigation Booster Pump Maintenance, Repairs, and Replacements (CIP 955516) in an Amount Not to Exceed $300,000 for a One-Year Term Ending June 30, 2026, with the Option to Renew the Agreement for Up to Four Additional Successive One-Year Terms Recommendation: Approve Resolution Nos. 2025-025, 2025-026, and 2025-027

6. SPECIAL PRESENTATIONS

6.1 Update on San Ramon Valley Fire Protection District Activities Update by Paige Meyer, Fire Chief and Jonas Aguiar, Deputy Fire Chief

7. DEFERRED CONSENT ITEMS

8. UNFINISHED BUSINESS

9. NEW BUSINESS

9.1 Arts Advisory Committee 2024 Annual Report
Introduction by Adam Chow, Recreation Supervisor. Presentation by Naina Shastri, Arts Advisory Committee Chairperson

9.2 Open Space Advisory Committee 2024 Annual Report
Introduction by Brad Morris, Division Manager. Presentation by Robert Peoples, Open Space Advisory Committee Chairperson

10. CITY MANAGER'S AND CITY COUNCIL MEMBERS' COMMENTS /

MATTERS INITIATED

11. ADJOURNMENT
I hereby certify the agenda was posted 72 hours before the noted meeting. This agenda is posted in accordance with Government Code Section 54954.2(a).

Dated: February 21, 2025
5 City Council Meeting – February 25, 2025
HOW TO VIEW OR PARTICIPATE IN THE MEETING:

The public is invited to participate in the meeting using any of the following methods:

IN-PERSON
Members of the public can provide in-person comments at the meeting. To make a request for disability-related accommodation to participate in the meeting, please contact the City Clerk’s Office 48 hours in advance of the meeting.

WRITTEN COMMUNICATION BY EMAIL
Public comments may be submitted via e-mail to [email protected]. Any public comments received up until two (2) hours prior to the scheduled start time of the meeting will be distributed to the City Council via email, provided at the meeting in the red binder, and posted online at www.sanramon.ca.gov/public_comment.

Written comments received after the cut-off time will be provided to the City Council the day following the meeting.

Please include “Public Comment” in the subject line. In the body of the email please include your name and the item you wish to comment on. Written public comment will not be read aloud during the meeting.

TO VIEW OR LISTEN ONLY
As a courtesy and technology permitting, the public will have the opportunity to view the meeting via one-way feed by the options below. However, the City cannot guarantee that the public’s remote access to any meeting will be uninterrupted, and technical difficulties may occur from time to time. In those instances, so long as the public may still attend the meeting in person, the meeting will continue. Members of the public desiring to provide comments as a part of the meeting are encouraged to either submit written comments prior to the meeting or to attend the meeting in person.
a. Zoom: https://cityofsanramon.zoom.us/j/95906598723
Webinar ID: 959 0659 8723
a. Zoom Phone Numbers: +1 (669) 900-6833
a. The City’s YouTube Channel: www.sanramon.ca.gov/YouTube Regular City Council meetings are broadcast on Contra Costa Television (CCTV) (Channel 27) on Wednesdays at 7:00 p.m. and Thursdays at 1:00 p.m. immediately following the meeting. Regular City Council meetings are also broadcast on AT&T U-Verse (Channel 99).

ATTENDEE CONDUCT
There will be zero tolerance for any person addressing the Council making profane, offensive and disruptive remarks, or engaging in loud, boisterous, or other disorderly conduct, that disrupts the orderly conduct of the public meeting. Specifically, it is important for all speakers to adhere to the following guidelines for participation in this meeting:
a. No profanity or obscenity.
b. Refrain from personal threats or attacks.
c. Refrain from hateful epithets and demeaning language based on any person’s race, religion, sexual orientation, ethnicity, gender, or disability.
d. Respect all people that are present or watching.

At the discretion of the Mayor, a speaker may forfeit speaking time for any of the following reasons:
a. Exceeding the allotted time to speak;
b. Yelling, screaming, or other behavior that renders this Council unable to continue the meeting; c. Excessive profanity or slander;
d. Specific threats or “fighting words” that incite violence; or e. Speech that is outside the subject matter jurisdiction of the Council or the specific agenda item in which you are speaking.

While the City of San Ramon ensures the First Amendment rights of its citizens, we do not accept nor endorse any offensive or hateful comments made during our meetings. The City of San Ramon celebrates the diversity of our community, and we strive to be a welcoming and open community for all.

MINUTES OF THE CITY OF SAN RAMON

CITY COUNCIL / PLANNING COMMISSION JOINT MEETING
FEBRUARY 11, 2025 AT 6:00 PM

1. CALL TO ORDER
The Mayor called the meeting to order at 6:00 p.m.

Attendee Name Title Status
Mark Armstrong Mayor Present
Sridhar Verose Vice Mayor Present
Richard Adler Councilmember Present
Robert Jweinat Councilmember Present
Marisol Rubio Councilmember Present
Jean Kuznik Chair Present
Gary Alpert Commissioner Present
Dave Curtis Vice Chair Present
Eric Wallis Commissioner Present
Also in attendance: City Manager Steven Spedowfski, City Attorney Martin Lysons, City Clerk Christina Franco, and Senior Planner Cindy Yee.

2. NEW BUSINESS

2.1 Joint City Council and Planning Commission Public Hearing: General Plan Amendment for Downtown Mixed Use – North (DMU-N) Sitewide Floor Area Ratio (FAR) Amendment (GPA 2024-0001) and Zoning Ordinance Text Amendment for DMU-N Sitewide FAR Amendment (TA 2024-0003) Recommendation: Receive the Staff Report, Open the Public Hearing, and Receive Public Comments, Provide Feedback to Staff, and Continue the Public Hearing the Next Joint City Council and Planning Commission Meeting Scheduled on February 25, 2025.

Staff report and introduction by Cindy Yee, Senior Planner.

Applicant, Stephanie Hill representing Sunset Development provided a presentation.

Public comment was received from Yohannes Tilahun.

Cm. Rubio's motion to open the Public Hearing was seconded by Commissioner Alpert.

The motion passed 9-0-0-0.

Cm. Rubio's motion to close to the Public Hearing was seconded by Vice Mayor Verose.

The motion passed 9-0-0-0.

Vice Mayor Verose's motion to cancel the February 25, 2025 joint City Council and Planning Commission meeting on this item was seconded by Cm. Jweinat. The motion passed 9-0-0-0.

5.1 Packet Pg. 7
Minutes Acceptance: Minutes of Feb 11, 2025 6:00 PM (CONSENT CALENDAR) 2 City Council Meeting – February 11, 2025

3. ADJOURNMENT
The meeting was adjourned at 7:08 p.m.

5.1 Packet Pg. 8
Minutes Acceptance: Minutes of Feb 11, 2025 6:00 PM (CONSENT CALENDAR)

MINUTES OF THE

CITY OF SAN RAMON

CITY COUNCIL MEETING
FEBRUARY 11, 2025

1. CALL TO ORDER/ROLL CALL
The Mayor called the meeting to order at 7:20 p.m.

2. PLEDGE OF ALLEGIANCE

3. ANNOUNCEMENTS

4. PUBLIC COMMENT
Public comment was received from Tamara Bohlig, Sudha Ponnaganti and Bernie Szalaj from San Ramon Valley Rotary, and Douglas Medlin from Indivisible Tri-Valley.

5. CONSENT CALENDAR
Prior to the vote, the City Clerk stated, for item 5.2, the staff report mistakenly states that the Quarterly Investment Report for the period ending December 31, 2024, was presented to the Finance Committee on February 10, 2025. Let the record reflect that the Investment Report was not presented to the Finance Committee on that date, as the meeting was cancelled.

Vice Mayor's motion to approve consent calendar items 5.1-5.8 was seconded by Cm.

Rubio. The motion passed 5-0-0-0.

RESULT: ADOPTED [UNANIMOUS]
MOVER: Sridhar Verose, Vice Mayor
SECONDER: Marisol Rubio, Councilmember
AYES: Armstrong, Verose, Adler, Jweinat, Rubio

5.1 Minute of the City Council Regular Meeting – January 28, 2025 Recommendation: Approve Minutes

5.2 Packet Pg. 9
Minutes Acceptance: Minutes of Feb 11, 2025 7:00 PM (CONSENT CALENDAR) 2 City Council Meeting – February 11, 2025

5.2 Quarterly Investment Report for the Period Ending December 31, 2024 Recommendation: Accept Report

5.3 Minute Order No. 2025-001 - Ratifying the Architectural Review Board Appointment
Recommendation: Approve Minute Order No. 2025-001

5.4 Resolution No. 2025-012 - Authorizing Execution of Update to the FY 2024/25 Salary Schedule
Recommendation: Approve Resolution No. 2025-012

5.5 Resolution No. 2025-013 - Authorizing the City Manager to Amend the Agreement with Municipal Resource Group (MRG) to Include a Police Department Assessment and Increase the Contract Value by $99,600 Recommendation: Approve Resolution No. 2025-013

5.6 Resolution No. 2025-014 - Authorizing the Mayor to Execute an Agreement with Design Workshop, Inc for Trails Master Plan Services for an Amount Not to Exceed $124,850 through October 31, 2025, with the Option to Renew the Agreement for Up to One Additional Successive One-Year Term Recommendation: Approve Resolution No. 2025-014

5.7 Resolution No. 2025-015 - Authorizing the City Manager to Execute Cooperative Agreement No. 25CC08 Between the Contra Costa Transportation Authority (CCTA) and the City of San Ramon to Receive Transportation Fund for Clean Air Program (TFCA) Funds to Implement the City of San Ramon and Southwest Area Transportation (SWAT) Subregional TRAFFIX School Bus Program Recommendation: Approve Resolution No. 2025-015

5.8 Resolution No. 2025-016 - Approving the Parcel Map for the Orchards (Chevron Park) Minor Subdivision MS 24-0002 Located at 6001 Bollinger Canyon Road (APN 213-120-008)
Recommendation: Approve Resolution No. 2025-016

6. SPECIAL PRESENTATIONS

7. DEFERRED CONSENT ITEMS

8. UNFINISHED BUSINESS

9. NEW BUSINESS

9.1 Annual Audit Report for the City of San Ramon for the Fiscal Year Ended June 30, 2024
Recommendation: Accept Report

5.2 Packet Pg. 10
Minutes Acceptance: Minutes of Feb 11, 2025 7:00 PM (CONSENT CALENDAR) 3 City Council Meeting – February 11, 2025
Introduction and overview of the item by Candace Daniels, Finance Division Manager.

Presentation by Vikki Rodriquez, Partner at Maze and Associates.

There was no public comment on this item.

The City Council did not take action on this item.

9.2 Non-Retail Policy Discussion
Recommendation: Receive the Report and Provide Feedback to Staff.

Introduction by Cindy Yee, Senior Planner. Presentation by Roger Dale, Managing Principal of the Natelson Dale Group.

Public comment was received from Byron De Arakal. A written public comment was received from Byron De Arakal.

The City Council provided comments and directions to staff. The City Council did not take action on this item.

9.3 Resolution No. 2025-017 - Authorizing Mid-Year Financial Review 2024/25 Budget Adjustments
Recommendation: Approve Resolution 2025-017
Staff report and presentation by Scott Koll, Assistant City Manager.

There was no public comment for this item.

Vice Mayor Verose's motion to approve Resolution No. 2025-017, authorizing mid-year 2024/25 budget adjustments, was seconded by Cm. Adler. The motion passed 5-0-0-0.

RESULT: APPROVED [UNANIMOUS]
MOVER: Sridhar Verose, Vice Mayor
SECONDER: Richard Adler, Councilmember
AYES: Armstrong, Verose, Adler, Jweinat, Rubio

9.4 Consideration Of, and Direction to Staff of the Candidate Selection to Invite to a Formal Interview to Fill the Vacancy on the Planning Commission Recommendation: Receive Report and Provide Direction to Staff Staff report by Christina Franco, City Clerk.

There was no public comment for this item.

The City Council agreed to interview all nine candidates for 30 minutes each on Wednesday, February 19, 2025 at 4:00pm, and each candidate will be asked two questions per Councilmember for a total of 10 questions.

5.2 Packet Pg. 11
Minutes Acceptance: Minutes of Feb 11, 2025 7:00 PM (CONSENT CALENDAR) 4 City Council Meeting – February 11, 2025

10. CITY MANAGER'S AND CITY COUNCIL MEMBERS' COMMENTS /

MATTERS INITIATED

11. CLOSED SESSION

11.1 Convene to Closed Session pursuant to Govt. Code section 54956.8 for the City Council to instruct its negotiator, Steven Spedowfski, on issues of price and terms of payment relating to sale or exchange of real property [San Ramon Transit Center (located at 7051 Executive Parkway] (APN 213-133-071) and [proposed Bishop Ranch Transit Center located at 2641 Camino Ramon] (APN 213-133- 085) in San Ramon.

Written public comment was received from Brian Swanson.

The City Council convened to closed session at 10:24 p.m.

11.2 Report on Closed Session
The City Council returned from closed session at 11:28 p.m.

The Mayor stated the Council provided direction to the staff and there is nothing to report.

12. ADJOURNMENT
The meeting was adjourned at 11:28 p.m.

5.2 Packet Pg. 12
Minutes Acceptance: Minutes of Feb 11, 2025 7:00 PM (CONSENT CALENDAR)

MINUTES OF THE

CITY OF SAN RAMON

CITY COUNCIL MEETING
February 15, 2025

1. CALL TO ORDER/ROLL CALL
The Mayor called the meeting to order at 9:07 am.

Attendee Name Title Status
Mark Armstrong Mayor Present
Sridhar Verose Vice Mayor Present
Richard Adler Councilmember Present
Robert Jweinat Councilmember Present
Marisol Rubio Councilmember Present
Also in attendance: City Manager Steven Spedowfski, City Attorney Martin Lysons, City Clerk Christina Franco, Assistant City Manager Scott Koll, Communication Analyst Simone Finney, Public Works Director Brian Bornstein, Police Chief Denton Carlson, Parks and Community Services Director Kathi Heimann, Community Development Director Debbie Chamberlain, Police Captains Becky Chestnut and John Cranford, Planning Services Division Manager Lauren Barr, Chief Building Official Vance Phillips, Public Works Division Managers Jon Bell, Rod Wui, Shane Hsieh, Chris Weeks, Human Resources Division Manager Megan O’Donoghue, Parks and Community Services Division Manager Brad Morris, and Deputy City Clerk Joan Snashall.

2. WORKSHOP

2.1 Development of Goals for Fiscal Year 2025/2026
Introduction by City Manager Steven Spedowfski. The workshop was facilitated by Shawn Spano.

The Mayor opened public comment. Public comment was received from Eric Wallis. The Mayor closed public comment.

The City Council provided feedback to staff.

3. ADJOURNMENT
The workshop adjourned at 2:47 p.m.

5.3 Packet Pg. 13
Minutes Acceptance: Minutes of Feb 15, 2025 9:00 AM (CONSENT CALENDAR)

MINUTES OF THE

CITY OF SAN RAMON

CITY COUNCIL MEETING
February 19, 2025

1. CALL TO ORDER/ROLL CALL
The Mayor called the meeting to order at 4:12 p.m.

2. COUNCIL BUSINESS

2.1 Planning Commission Interviews and Appointment
Mayor Armstrong opened public comment. Public comment was received from Eric Wallis. Mayor Armstrong closed public comment.

The City Council conducted eight interviews. Jim Hansen withdrew his application.

Vice Mayor Verose's motion to appoint Beatriz "Betty" Avila to the Planning Commission for a term to expire in June 2027, was seconded by Cm. Rubio. The motion passed 5-0-0-0.

3. ADJOURNMENT
The meeting was adjourned at 8:57 p.m.

5.4 Packet Pg. 14
Minutes Acceptance: Minutes of Feb 19, 2025 4:00 PM (CONSENT CALENDAR)

CITY COUNCIL STAFF REPORT
DATE: February 25, 2025
TO: City Council/City Manager
FROM: Scott Koll, Deputy City Manager
By: Adolfo Navarro, Accounting Specialist
SUBJECT: Register of Demands as Presented by the City Treasurer (Period Ending January 31, 2025)

ATTACHMENT
A: Register of Demands

5.5 Packet Pg. 15
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
A GRANDE AFFAIR CC SWEARING-IN CEREMONY GLASSWARE $196.32 $196.32 1/24/2025 35102 81813 10111000 62101 ABELLO, LAURA MARTIAL ARTS CLASS $235.20 $235.20 1/10/2025 34803 27057 10160832 44063 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20622457 10153420 61105 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20622457 10153419 61105 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20622458 10153419 61105 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20622458 10153420 61105 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20634104 10153419 61105 ACCO ENGINEERED MONTHLY HVAC WATER TREATMENT $270.00 1/10/2025 34804 20634104 10153420 61105 ACCO ENGINEERED HVAC REPAIRS $2,524.24 1/10/2025 34804 20632325 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $4,403.00 1/10/2025 34804 20632326 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $497.00 1/10/2025 34804 20640211 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $703.00 1/10/2025 34804 20640212 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $703.00 1/10/2025 34804 20640213 40100000 67012 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $2,025.00 1/17/2025 34930 20622456 10153418 61105 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $1,557.50 1/17/2025 34930 20622456 10153419 61105 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $1,557.50 1/17/2025 34930 20622456 10153420 61105 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $1,403.00 1/17/2025 34930 20636278 10153420 61105 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $1,403.00 1/17/2025 34930 20636278 10153419 61105 ACCO ENGINEERED HVAC QUARTERLY MAINTENANCE $1,716.00 1/17/2025 34930 20636278 10153418 61105 ACCO ENGINEERED HVAC REPAIRS $909.00 1/17/2025 34930 20615825 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $703.00 1/17/2025 34930 20640210 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $909.00 1/24/2025 35034 20640804 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $394.00 1/24/2025 35034 20641762 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $703.00 1/24/2025 35034 20641763 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $462.23 1/24/2025 35034 20646453 40100000 67012 ACCO ENGINEERED HVAC REPAIRS $703.00 $24,895.47 1/24/2025 35034 20646765 40100000 67012 ADAMS POOL SOLUTIONS SROP LAP POOL REPLASTER CIP 925479 $260,679.05 $260,679.05 1/31/2025 35107 67388 40100000 67012 ADVANCED MOBILITY GROUP LAMORINDA STREET SMARTS PROGRAM $4,611.26 1/31/2025 35108 22051 34751603 61001 ADVANCED MOBILITY GROUP LAMORINDA STREET SMARTS PROGRAM $6,741.93 $11,353.19 1/31/2025 35108 22102 34751603 61001 ADVANCED TRAFFIC PRODUCTS OPTICOM PRE-EMPTION/FLASHER CARD $9,272.68 $9,272.68 1/17/2025 34931 39378 40100000 67012 AD-WEAR & SPECIALTY ADULT SPORTS CHAMPIONSHIP T-SHIRTS $526.13 $526.13 1/10/2025 34805 36866-IN 10160805 62016 AERIAL INSPECTION AERIAL LIFT ANNUAL INSPECTIONS $2,800.00 $2,800.00 1/17/2025 34932 1289 10153701 61101 AGNANI, MILAN STALE CHECK REISSUE - RENTAL DEPOSIT REFUND $1,000.00 1/31/2025 35143 60499463* 10100000 20610 AGNANI, MILAN STALE CHECK REISSUE - RENTAL DEPOSIT REFUND $100.00 $1,100.00 1/31/2025 35144 60499481* 10100000 20610 AGOMONI RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34862 80736990 10100000 20108

Page 1 of 40 ends

5.5.a
Packet Pg. 16
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
AGROMIN HORTICULTURAL PRODUCTS COMPOST PROCUREMENT CIP 400010 $36.00 $36.00 1/24/2025 35035 0349448-IN 40100000 67012 AITON, KANDEE R RUN SAN RAMON 5K RACE TIMING SERVICE $5,150.00 $5,150.00 1/10/2025 34806 120724-01 10160804 61005 ALAMEDA COUNTY OFFICE CITY INTERNET CONNECTION 7/1-12/31/24 $14,669.76 1/24/2025 35036 INV25-00199 10123300 61301 ALAMEDA COUNTY OFFICE CITY INTERNET CONNECTION 7/1/24-6/30/25 $32,000.00 $46,669.76 1/31/2025 35109 INV25-00207 10123300 61301 ALAMO ACE HARDWARE TABLE LEVELERS $11.89 1/24/2025 35102 81611 10141600 62008 ALAMO ACE HARDWARE TABLE LEVELERS $6.98 1/24/2025 35102 81611 34341600 62008 ALAMO ACE HARDWARE BATTERIES/HARDWARE $22.84 1/24/2025 35102 81653 10142500 62019 ALAMO ACE HARDWARE BATTERIES/HARDWARE $13.42 1/24/2025 35102 81653 34342500 62019 ALAMO ACE HARDWARE SROP ELECTRICAL SWITCH $10.86 1/24/2025 35102 81655 10153406 62008 ALAMO ACE HARDWARE SUNRISE RIDGE PARK RODENT PROOF CONTAINER $23.90 $89.89 1/24/2025 35102 81690 10153621 62008 ALEXANDER J. ROGERS ADULT BALLET CLASSES $102.67 $102.67 1/17/2025 34933 27142-27145 10160706 44059 ALLIED PROPANE SERVICE, INC PROPANE FUEL $383.08 $383.08 1/24/2025 35037 U034A034 10153701 62020 ALPERT, GARY COMMISSIONER STIPEND $250.00 $250.00 1/3/2025 34753 JAN 2025 10131100 61012 ALPINE AWARDS, INC TEEN COUNCIL APPAREL $509.00 $509.00 1/24/2025 35039 6109451 10160632 62016 AM/PM LOCKSMITH DUPLICATE KEYS $33.52 $33.52 1/24/2025 35102 81676 10160830 62016 AMAZON WEB SERVICES BACKUP DATA CLOUD STORAGE $2,387.33 $2,387.33 1/10/2025 34807 1989025225 10123100 61010 AMAZON.COM FUEL HOSE REEL $325.16 1/10/2025 34808 1GWP-DQDM-7MPH 10153703 62008 AMAZON.COM CALENDAR $7.26 1/10/2025 34808 1FQG-MFL9-3QCP 10153100 62101 AMAZON.COM CALENDARS/BOOK PLANNER $969.81 1/10/2025 34808 1GMC-W9L4-T4FM 10153100 62101 AMAZON.COM CALENDAR/PLANNER $302.46 1/10/2025 34808 1TQF-MLJN-FY6C 10153100 62101 AMAZON.COM CALENDAR $7.60 1/10/2025 34808 1YN9-73YG-H14V 10153100 62101 AMAZON.COM PEET'S COFFEE $71.98 1/10/2025 34808 1YP7-LDMT-PR1Y 10153100 62101 AMAZON.COM SALSBURY INDUSTRIES $323.64 1/10/2025 34808 1LVW-QV4X-766T 34353504 62008 AMAZON.COM OUTDOOR SOLAR STREET LIGHTS $216.41 1/17/2025 34934 11ND-QWM1-WVFM 10153600 62008 AMAZON.COM WRENCH SET $80.46 1/17/2025 34934 1KT9-CN4F-MN19 10153704 62008 AMAZON.COM CALENDAR/PACKING TAPE $46.27 1/17/2025 34934 1GHN-LP3J-XKMC 10153100 62101 AMAZON.COM CREAMER $24.68 1/17/2025 34934 1LNR-611J-4FYC 10153100 62101 AMAZON.COM CALENDAR $14.75 1/17/2025 34934 1P11-NDW6-JKN6 10153100 62101 AMAZON.COM SUGAR $12.03 1/17/2025 34934 1XDG-GFJV-1CVF 10153100 62101 AMAZON.COM TABLE LEVELERS $4.93 1/24/2025 35102 81608 10141600 62008 AMAZON.COM TABLE LEVELERS $2.89 1/24/2025 35102 81608 34341600 62008 AMAZON.COM CREDIT-TABLE LEVELERS -$4.93 1/24/2025 35102 81609 10141600 62008 AMAZON.COM CREDIT-TABLE LEVELERS -$2.89 1/24/2025 35102 81609 34341600 62008 AMAZON.COM WIRELESS MICROPHONE $76.05 1/24/2025 35102 81616 10141600 62008 AMAZON.COM WIRELESS MICROPHONE $44.66 1/24/2025 35102 81616 34341600 62008

Page 2 of 40 ends

5.5.a
Packet Pg. 17
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
AMAZON.COM CAMERA EQUIPMENT $32.18 1/24/2025 35102 81617 10160108 62016 AMAZON.COM OFFICE DESK CHAIR WHEEL REPLACEMENT $38.17 1/24/2025 35102 81629 10114100 62101 AMAZON.COM OFFICE DESK EXTENSION $103.71 1/24/2025 35102 81630 10114100 62101 AMAZON.COM WALL CALENDAR DRY ERASE $27.18 1/24/2025 35102 81634 10122100 62101 AMAZON.COM EMPLOYEE EVENT HOLIDAY PARTY SUPPLIES $54.30 1/24/2025 35102 81636 10122300 65101 AMAZON.COM EMPLOYEE EVENT HOLIDAY PARTY SUPPLIES $203.70 1/24/2025 35102 81637 10122300 65101 AMAZON.COM CREDIT-EVENT HOLIDAY PARTY SUPPLIES REFUND -$8.68 1/24/2025 35102 81638 10122300 65101 AMAZON.COM CREDIT-EVENT HOLIDAY PARTY SUPPLIES REFUND -$17.36 1/24/2025 35102 81639 10122300 65101 AMAZON.COM CREDIT-EVENT HOLIDAY PARTY SUPPLIES REFUND -$8.68 1/24/2025 35102 81640 10122300 65101 AMAZON.COM CREDIT-EVENT HOLIDAY PARTY SUPPLIES REFUND -$8.68 1/24/2025 35102 81641 10122300 65101 AMAZON.COM DRONES USB CABLES/PORTABLE CHARGERS $146.76 1/24/2025 35102 81642 10142600 62008 AMAZON.COM WALL HOOKS $11.36 1/24/2025 35102 81646 10121100 62101 AMAZON.COM CITY HALL CHRISTMAS TREE REPLACEMENT BASES $189.18 1/24/2025 35102 81649 10160312 61101 AMAZON.COM USB HUB $13.04 1/24/2025 35102 81662 10113100 62101 AMAZON.COM TONER CARTRIDGE $73.94 1/24/2025 35102 81663 10113100 62101 AMAZON.COM ERASABLE/WALL CALENDAR (2) $59.32 1/24/2025 35102 81664 10113100 62101 AMAZON.COM HOLIDAY STOCKINGS $16.30 1/24/2025 35102 81665 10113100 62101 AMAZON.COM YOUTH HOOPS END OF SEASON ALL STAR EVENT TICKETS $13.04 1/24/2025 35102 81674 10160834 62016 AMAZON.COM STAKES FOR FLOOD CONTROL $50.90 1/24/2025 35102 81681 34553901 62008 AMAZON.COM REPLACEMENT HARD HATS $108.72 1/24/2025 35102 81683 10153100 62017 AMAZON.COM 4 INCH PAINT ROLLERS $30.44 1/24/2025 35102 81684 10153806 62012 AMAZON.COM SCHOOL TOURS BOOSTER SEAT CUSHION $34.78 1/24/2025 35102 81696 10114102 65102 AMAZON.COM USB C POWER ADAPTER (2) $23.30 1/24/2025 35102 81705 10142102 62008 AMAZON.COM USB C POWER ADAPTER (2) $13.68 1/24/2025 35102 81705 34342102 62008 AMAZON.COM USB-C CABLE (2) $21.91 1/24/2025 35102 81706 10142102 62008 AMAZON.COM USB-C CABLE (2) $12.87 1/24/2025 35102 81706 34342102 62008 AMAZON.COM WALL CALENDAR $20.26 1/24/2025 35102 81709 34751600 62101 AMAZON.COM COFFEE FILTERS $38.65 1/24/2025 35102 81713 10160312 62016 AMAZON.COM DISHWASHER HEAT SENSITIVE TEST STRIPS $18.48 1/24/2025 35102 81715 10160311 62016 AMAZON.COM TAPE $93.42 1/24/2025 35102 81721 10141500 62017 AMAZON.COM TAPE $54.87 1/24/2025 35102 81721 34341500 62017 AMAZON.COM CHARGE ERROR $32.30 1/24/2025 35102 81728 10100000 20703 AMAZON.COM CHARGE ERROR $26.02 1/24/2025 35102 81729 10100000 20703 AMAZON.COM OFFICE SUPPLIES $196.26 1/24/2025 35102 81736 10114100 62101 AMAZON.COM CREDIT-OFFICE SUPPLIES -$10.32 1/24/2025 35102 81737 10114100 62101 AMAZON.COM INTERNATIONAL BUILDING CODE BUILDER'S BOOK $18.43 1/24/2025 35102 81750 10132100 62201 AMAZON.COM BAH HUMBUG RACE SUPPLIES $47.83 1/24/2025 35102 81761 10160804 62016 AMAZON.COM BAH HUMBUG RACE SUPPLIES $12.62 1/24/2025 35102 81763 10160804 62016 AMAZON.COM BAH HUMBUG RACE SUPPLIES $12.62 1/24/2025 35102 81764 10160804 62016 AMAZON.COM BAH HUMBUG RACE SUPPLIES $12.62 1/24/2025 35102 81765 10160804 62016 AMAZON.COM PORTACOUNT MACHINE MICROSOFT SURFACE KEYBOARD $66.29 1/24/2025 35102 81787 10141500 62017 AMAZON.COM PORTACOUNT MACHINE MICROSOFT SURFACE KEYBOARD $38.93 1/24/2025 35102 81787 34341500 62017 AMAZON.COM SURFACE PEN $117.98 1/24/2025 35102 81789 10123100 62008 AMAZON.COM TELEPHONE CORD (10) $73.80 1/24/2025 35102 81793 10123300 61101 AMAZON.COM USB CABLE (2) $27.98 1/24/2025 35102 81794 10123100 62008

Page 3 of 40 ends

5.5.a
Packet Pg. 18
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
AMAZON.COM USB C HUB $36.19 1/24/2025 35102 81798 10123100 62008 AMAZON.COM MONITOR ARM MOUNT $113.09 1/24/2025 35102 81799 10123100 62008 AMAZON.COM USB HUB (3) $65.22 1/24/2025 35102 81800 10123100 62008 AMAZON.COM UPS BATTERY REPLACEMENT $662.29 1/24/2025 35102 81803 10123100 62008 AMAZON.COM XEROX DESKTOP SCANNER $289.26 1/24/2025 35102 81804 10123100 62008 AMAZON.COM XEROX DESKTOP SCANNER (2) $578.52 1/24/2025 35102 81805 10113100 65004 AMAZON.COM VIDEO CABLES USB-C $534.15 1/24/2025 35102 81806 10123100 62008 AMAZON.COM CC SWEARING-IN CEREMONY TABLECLOTH (12) $329.04 1/24/2025 35102 81810 10111000 62101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $32.60 1/24/2025 35102 81817 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $10.96 1/24/2025 35102 81818 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $75.87 1/24/2025 35102 81819 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $313.90 1/24/2025 35102 81820 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $85.50 1/24/2025 35102 81821 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $32.19 1/24/2025 35102 81823 10122300 65101 AMAZON.COM ANNUAL HOLIDAY PARTY SUPPLIES/DECORATIONS $104.37 1/24/2025 35102 81824 10122300 65101 AMAZON.COM CREDIT-HOLIDAY POTLUCK SUPPLIES -$95.46 1/24/2025 35102 81828 10153100 65003 AMAZON.COM HOLIDAY POTLUCK SUPPLIES $121.85 1/24/2025 35102 81829 10153100 65003 AMAZON.COM HOLIDAY POTLUCK SUPPLIES $69.67 1/24/2025 35102 81830 10153100 65003 AMAZON.COM HOLIDAY POTLUCK SUPPLIES $16.65 1/24/2025 35102 81831 10153100 65003 AMAZON.COM HOLIDAY POTLUCK SUPPLIES $31.21 1/24/2025 35102 81832 10153100 65003 AMAZON.COM HOLIDAY POTLUCK SUPPLIES $19.11 1/24/2025 35102 81833 10153100 65003 AMAZON.COM CARRIAGE BOLT SCREW KIT $9.77 1/24/2025 35040 16GJ-CJRL-3JX9 10153400 62008 AMAZON.COM ROTARY HAMMER $212.70 1/24/2025 35040 1FK7-XMVC-PGYF 10153704 62008 AMAZON.COM JUMBO CROWFOOT WRENCH $79.38 1/24/2025 35040 1H4L-QLDT-HGCT 10153704 62008 AMAZON.COM CALENDAR/PLANNER $46.16 1/24/2025 35040 19F4-TJXC-H74P 10153100 62101 AMAZON.COM ULTRABOND TURF $209.88 $8,641.71 1/24/2025 35040 1NCR-6V91-JFGN 40100000 67012 AMERICAN RIVER COLLEGE REGISTRATION/M.ZUBKO $112.77 1/24/2025 35102 81780 10141500 65001 AMERICAN RIVER COLLEGE REGISTRATION/M.ZUBKO $66.23 $179.00 1/24/2025 35102 81780 34341500 65001 AMERICA'S MUSIC TEACHER THEATER DEPOSIT REFUND $400.00 $400.00 1/10/2025 34863 81419615 10100000 20108 AMOBIUS GROUP INC. SERVICE FEE 1/25-12/25 $900.00 $900.00 1/10/2025 34809 4195 10123400 61010 AMZNFREETIME*Z19725O CHARGE ERROR $48.00 $48.00 1/24/2025 35102 81707 10100000 20703 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $207.60 1/3/2025 34754 12676361 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $140.00 1/3/2025 34754 12676361 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $164.90 1/10/2025 34810 12676086 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $8.19 1/10/2025 34810 12676106 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $369.18 1/10/2025 34810 12676116 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $4.80 1/10/2025 34810 12676129 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $45.66 1/10/2025 34810 12676347 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $140.00 1/10/2025 34810 12676086 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $3.82 1/10/2025 34810 12676106 10123100 61201

Page 4 of 40 ends

5.5.a
Packet Pg. 19
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $172.46 1/10/2025 34810 12676116 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $2.24 1/10/2025 34810 12676129 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $21.33 1/10/2025 34810 12676347 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $217.82 1/24/2025 35041 12697437 10123100 61101 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $140.00 1/24/2025 35041 12697437 10123100 61201 ARC DOCUMENT SOLUTIONS LLC COPY MACHINE USAGE $7.86 $1,645.86 1/24/2025 35041 12697433 10153100 62101 ARROWHEAD FORENSICS LABELS $70.09 1/24/2025 35102 81615 10141600 62008 ARROWHEAD FORENSICS LABELS $41.16 $111.25 1/24/2025 35102 81615 34341600 62008 ARTHUR, MOHAN RENTAL DEPOSIT REFUND $100.00 1/10/2025 34864 80738570 10100000 20108 ARTHUR, MOHAN RENTAL DEPOSIT REFUND $500.00 $600.00 1/10/2025 34865 80738519 10100000 20108 ARULANANTHAM, MARY K AEROBICS CLASS $1,050.00 $1,050.00 1/17/2025 34935 27009-27110 12/24 10160706 61006 ASCE RENEWAL/D.FEHR $326.00 $326.00 1/24/2025 35102 81657 10152304 62203 ASI, EIZALEEN DEPOSIT RENTAL REFUND $500.00 $500.00 1/31/2025 35145 81479392 10100000 20108 AT&T DVSC GUEST INTERNET $171.20 1/24/2025 35102 81790 10153100 61302 AT&T DSCC GUEST INTERNET $171.20 $342.40 1/24/2025 35102 81791 10160106 61301 AT&T MOBILITY PHONE SERVICE 11/3-12/2 $50.13 1/3/2025 34755 287302631084 1124 10151100 61301 AT&T MOBILITY PHONE SERVICE 11/3-12/2 $3,471.76 1/3/2025 34755 287302631084 1124 10153100 61302 AT&T MOBILITY CITY CAMERAS 11/20-12/19 $606.20 1/3/2025 34756 287300391599 12/24 10141100 61301 AT&T MOBILITY CITY CAMERAS 11/20-12/19 $356.03 1/3/2025 34756 287300391599 12/24 34341100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $50.13 1/17/2025 34936 287302631084 12/24 10151100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $3,455.15 1/17/2025 34936 287302631084 12/24 10153100 61302 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $3,488.56 1/17/2025 34937 287293544114 12/24 10141100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $2,048.83 1/17/2025 34937 287293544114 12/24 34341100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $185.26 1/17/2025 34938 287309151499 12/24 10131100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $592.71 1/17/2025 34938 287309151499 12/24 60332100 67007 AT&T MOBILITY CITY CAMERAS 12/20-1/19 $898.96 1/17/2025 34939 287299740192 1/25 10141100 61301 AT&T MOBILITY CITY CAMERAS 12/20-1/19 $527.96 1/17/2025 34939 287299740192 1/25 34341100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $50.64 1/17/2025 34940 287297643120 12/24 10113100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $196.60 1/17/2025 34940 287297643120 12/24 10111000 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $141.82 1/17/2025 34940 287297643120 12/24 10112100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $232.70 1/17/2025 34940 287297643120 12/24 10123300 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $993.02 1/17/2025 34941 287302382073 12/24 10152100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $50.09 1/17/2025 34941 287302382073 12/24 10151100 61301 AT&T MOBILITY PHONE SERVICE 12/3-1/2 $50.09 1/17/2025 34941 287302382073 12/24 35151800 61301 AT&T MOBILITY CITY CAMERAS 12/20-1/19 $606.33 1/31/2025 35110 287300391599 1/25 10141100 61301 AT&T MOBILITY CITY CAMERAS 12/20-1/19 $356.10 $18,409.07 1/31/2025 35110 287300391599 1/25 34341100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $33.88 1/3/2025 34757 000022786405 10152100 61301

Page 5 of 40 ends

5.5.a
Packet Pg. 20
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
AT&T-CALNET III PHONE SERVICE 11/25-12/24 $33.88 1/3/2025 34757 000022786405 10131100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $328.32 1/3/2025 34757 000022786405 10141100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $20.61 1/3/2025 34757 000022786405 10142400 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $1,752.28 1/3/2025 34757 000022786405 10160106 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $41.69 1/3/2025 34757 000022787420 10141100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $32.71 1/3/2025 34757 000022786405 10153602 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $32.71 1/3/2025 34757 000022786405 10153615 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $126.17 1/3/2025 34757 000022786405 10153405 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $227.47 1/3/2025 34757 000022786405 10153402 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $675.58 1/3/2025 34757 000022786405 10153100 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $100.05 1/3/2025 34757 000022787420 10153100 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $32.71 1/3/2025 34757 000022786405 30153501 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $192.82 1/3/2025 34757 000022786405 34341100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $12.10 1/3/2025 34757 000022786405 34342400 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $24.48 1/3/2025 34757 000022787420 34341100 61301 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $32.71 1/3/2025 34757 000022786405 34353613 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $159.02 1/3/2025 34757 000022786405 34353415 61302 AT&T-CALNET III PHONE SERVICE 11/25-12/24 $224.31 1/3/2025 34757 000022786405 34353504 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $316.69 1/31/2025 35111 000022934291 10141100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $32.79 1/31/2025 35111 000022934291 10131100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $32.86 1/31/2025 35111 000022934291 10152100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $1,688.94 1/31/2025 35111 000022934291 10160106 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $19.86 1/31/2025 35111 000022934291 10142400 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $96.77 1/31/2025 35111 000022935306 10153100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $40.31 1/31/2025 35111 000022935306 10141100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $451.40 1/31/2025 35111 000022934291 10153100 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $219.24 1/31/2025 35111 000022934291 10153402 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $121.45 1/31/2025 35111 000022934291 10153405 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $31.53 1/31/2025 35111 000022934291 10153615 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $31.55 1/31/2025 35111 000022934291 10153602 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $31.53 1/31/2025 35111 000022934291 30153501 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $186.00 1/31/2025 35111 000022934291 34341100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $11.67 1/31/2025 35111 000022934291 34342400 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $23.67 1/31/2025 35111 000022935306 34341100 61301 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $216.05 1/31/2025 35111 000022934291 34353504 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $152.47 1/31/2025 35111 000022934291 34353415 61302 AT&T-CALNET III PHONE SERVICE 12/25-1/24 $31.53 $7,819.81 1/31/2025 35111 000022934291 34353613 61302 ATHENS TECHNICAL SPECIALIST CONFLICT MONITOR CALIBRATION $772.14 $772.14 1/17/2025 34942 INV110527 10153809 61119 B & H PHOTO-VIDEO-PRO DRONE GIMBAL DAMPERS (3) $25.12 1/24/2025 35102 81643 10142102 62008 B & H PHOTO-VIDEO-PRO DRONE GIMBAL DAMPERS (3) $14.76 $39.88 1/24/2025 35102 81643 34342102 62008 BABU, ADITYA TED VOLLEYBALL LEAGUE $1,010.50 1/10/2025 34811 27037 10160834 44063 BABU, ADITYA TED VOLLEYBALL CLASS $833.00 1/10/2025 34811 27042 10160832 44063

Page 6 of 40 ends

5.5.a
Packet Pg. 21
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
BABU, ADITYA TED VOLLEYBALL CLASS $680.00 $2,523.50 1/10/2025 34811 27053 10160832 44063 BARRIE-TABOR, HEATHER DANCE CLASSES $4,823.86 $4,823.86 1/10/2025 34812 27082-21759 10160436 44060 BART POLICE MANAGER'S RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34866 80736807 10100000 20108 BAST, DIANE MILEAGE REIMBURSEMENT $10.52 $10.52 1/10/2025 34813 REIMB 12/16-12/17 35151800 65004 BAY AREA FESTIVALS, INC CAMP FAIR BOOTH $256.47 $256.47 1/24/2025 35102 81675 10160108 61001 BAY HOME & WINDOW RENTAL DEPOSIT REFUND $100.00 1/10/2025 34867 80736401 10100000 20108 BAY HOME & WINDOW RENTAL DEPOSIT REFUND $500.00 $600.00 1/10/2025 34868 80736385 10100000 20108 BAY ISLAND OFFICIALS VOLLEYBALL OFFICIALS $540.00 $540.00 1/17/2025 34943 12312024 10160805 61001 BAYER, LANCE LEGAL SERVICES $875.00 $875.00 1/10/2025 34814 9/17-12/17 10113100 61003 BAYPAC CONSULT INC. PRELIMINARY DESIGN/CONCEPT REVIEW CIP 905531 $1,793.00 1/10/2025 34815 452.10 40100000 67012 BAYPAC CONSULT INC. PRELIMINARY DESIGN/CONCEPT REVIEW CIP 905531 $3,912.00 1/10/2025 34815 460.11 40100000 67012 BAYPAC CONSULT INC. PRELIMINARY DESIGN/CONCEPT REVIEW CIP 905531 $3,097.00 $8,802.00 1/10/2025 34815 466.12 40100000 67012 BELUGABEE RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34869 80736749 10100000 20108 BHAKTIVEDANTA INSTITUTE RENTAL DEPOSIT REFUND $125.00 $125.00 1/10/2025 34870 80736717 10100000 20108 BINDLISH, RAHUL DEPOSIT RENTAL REFUND $1,000.00 1/31/2025 35146 81479590 10100000 20108 BINDLISH, RAHUL DEPOSIT RENTAL REFUND $100.00 $1,100.00 1/31/2025 35147 81479555 10100000 20108 BKC VENTURES, INC BUSINESS CARDS $76.13 1/3/2025 34758 98835 10131000 61001 BKC VENTURES, INC BUSINESS CARDS $93.57 1/10/2025 34816 99194 10131000 61001 BKC VENTURES, INC BUSINESS CARDS/ENVELOPES $361.17 1/17/2025 34944 97471 10131000 61001 BKC VENTURES, INC BUSINESS CARDS $70.81 1/17/2025 34944 97730 10131000 61001 BKC VENTURES, INC ENVELOPES/NOTECARDS $1,812.64 1/31/2025 35112 99089 10131000 61001 BKC VENTURES, INC BUSINESS CARDS $85.69 1/31/2025 35112 99695 10131000 61001 BKC VENTURES, INC BUSINESS CARDS $70.58 $2,570.59 1/31/2025 35112 99747 10131000 61001 BLAHNIK, SABRINA RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34871 80536743 10100000 20108 BLINK TAG, INC SWAT WEBSITE UPDATES $137.50 $137.50 1/3/2025 34759 0003196 10151100 61001 BONASERA, JOYCE TENNIS CLASSES $950.00 1/3/2025 34760 27843-27883 10160802 44062 BONASERA, JOYCE TENNIS CLASSES $32,453.53 1/3/2025 34760 27843-27883 10160832 44063 BONASERA, JOYCE TENNIS CLASSES $19,111.50 $52,515.03 1/3/2025 34760 27888-27890 10160832 44063 BOUND TREE MEDICAL LLC SAFETY GLOVES $485.87 1/17/2025 34945 85547021 10141600 62008

Page 7 of 40 ends

5.5.a
Packet Pg. 22
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
BOUND TREE MEDICAL LLC SAFETY GLOVES $285.36 $771.23 1/17/2025 34945 85547021 34341600 62008 BOX INC MARKET CLOUD STORAGE $10.00 1/24/2025 35102 81618 10160108 61001 BOX INC ACCOUNT LICENSES 12/18-1/17/25 $100.00 $110.00 1/24/2025 35102 81758 60332100 44028 BOY SCOUTS OF AMERICA RENTAL DEPOSIT REFUND $1,000.00 1/10/2025 34872 80738616 10100000 20108 BOY SCOUTS OF AMERICA RENTAL DEPOSIT REFUND $100.00 $1,100.00 1/10/2025 34873 80738323 10100000 20108 BRACAMONTE, MARICELA INTERNAL AFFAIRS TRAINING $181.36 1/17/2025 34946 REIMB 12/15-12/18 10141500 65001 BRACAMONTE, MARICELA INTERNAL AFFAIRS TRAINING $106.51 $287.87 1/17/2025 34946 REIMB 12/15-12/18 34341500 65001 BRICK TECH LEGO CLASS $330.00 $330.00 1/10/2025 34817 26961 10160604 44058 BRIED, STEPHEN J. COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34761 JAN 2025 10160101 61001 BRIGHTVIEW LANDSCAPE OLD RANCH ESTATES IRRIGATION/PLANTS CIP 300010 $10,200.55 1/3/2025 34762 9198727 40100000 67012 BRIGHTVIEW LANDSCAPE LANDSCAPE RESTORATION CIP 935564 $2,246.36 1/3/2025 34763 9196100 40100000 67012 BRIGHTVIEW LANDSCAPE TREE MAINTENANCE SERVICE $6,449.00 1/17/2025 34947 9178518 10153504 61109 BRIGHTVIEW LANDSCAPE WEED ABATEMENT SERVICE $13,750.00 1/17/2025 34947 9196109 30153501 61119 BRIGHTVIEW LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $3,745.00 1/17/2025 34947 9151625 34353667 61106 BRIGHTVIEW LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $329.00 1/17/2025 34947 9151635 34353505 61106 BRIGHTVIEW LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $54,972.75 1/17/2025 34947 9151826 34353504 61106 BRIGHTVIEW LANDSCAPE LANDSCAPE MAINTENANCE 1/25 $3,745.00 1/31/2025 35113 9185159 34353667 61106 BRIGHTVIEW LANDSCAPE LANDSCAPE MAINTENANCE 1/25 $329.00 $95,766.66 1/31/2025 35113 9185169 34353505 61106 BRISENO, BREANNE RENTAL DEPOSIT REFUND $500.00 1/10/2025 34874 80738688 10100000 20108 BRISENO, BREANNE RENTAL DEPOSIT REFUND $100.00 $600.00 1/10/2025 34875 80738678 10100000 20108 BROCKMAN, DON ACTIVITY REFUND $54.00 1/31/2025 35148 81368530 10100000 20108 BROCKMAN, DON ACTIVITY REFUND $26.00 1/31/2025 35149 81368531 10100000 20108 BROCKMAN, DON ACTIVITY REFUND $54.00 1/31/2025 35150 81368529 10100000 20108 BROCKMAN, DON ACTIVITY REFUND $56.00 $190.00 1/31/2025 35151 81368528 10100000 20108 BURKE, WILLIAMS & SORENSEN INVESTIGATION FEES $4,913.96 $4,913.96 1/10/2025 34818 333343 10100000 20607 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $81.28 1/17/2025 34948 100-601950 2QTR FY25 10142600 62008 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $276.40 1/17/2025 34948 100-601950 2QTR FY25 10160804 62016 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 -$0.82 1/17/2025 34948 100-601950 2QTR FY25 10160805 62016 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $5.36 1/17/2025 34948 100-601950 2QTR FY25 10160834 62016 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $5.24 1/17/2025 34948 100-601950 2QTR FY25 10141100 62017 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $3.31 1/17/2025 34948 100-601950 2QTR FY25 10141500 62017 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $0.03 1/17/2025 34948 100-601950 2QTR FY25 10160630 62018 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $9.81 1/17/2025 34948 100-601950 2QTR FY25 10160311 62018 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $1.96 1/17/2025 34948 100-601950 2QTR FY25 34341500 62017 CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $3.08 1/17/2025 34948 100-601950 2QTR FY25 34341100 62017

Page 8 of 40 ends

5.5.a
Packet Pg. 23
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
CA DEPT OF TAX & FEE USE TAX 10/24-12/24 $23.35 $409.00 1/17/2025 34948 100-601950 2QTR FY25 34612400 62101 CACEO REGISTRATION/D.WILLIAMS $210.00 1/24/2025 35102 81754 10132300 65001 CACEO RENEWAL/M.ELLIOTT $100.00 1/24/2025 35102 81755 10132300 62203 CACEO RENEWAL/D.WILLIAMS $100.00 $410.00 1/24/2025 35102 81756 10132300 62203 CAL ENGINEERING & GEOLOGY, INC TASK 5-KAMI COURT LANDSLIDE MOVEMENT DETECTION $380.00 1/17/2025 34949 7501509 40100000 67012 CAL ENGINEERING & GEOLOGY, INC TASK 5-KAMI COURT LANDSLIDE MOVEMENT DETECTION $555.00 1/17/2025 34949 7501551 40100000 67012 CAL ENGINEERING & GEOLOGY, INC TASK 5-KAMI COURT LANDSLIDE MOVEMENT DETECTION $397.50 $1,332.50 1/17/2025 34949 7501597 40100000 67012 CAL LAW ENFORCEMENT LONG TERM DISABILITY PREMIUM $2,208.00 1/3/2025 34764 ID0259776 61000000 65211 CAL LAW ENFORCEMENT LONG TERM DISABILITY PREMIUM $2,208.00 $4,416.00 1/24/2025 35043 ID0267198 61000000 65211 CALCON SYSTEMS, INC. GHAD SENSAPHONE REPAIR/REPLACEMENT $5,272.00 $5,272.00 1/24/2025 35044 58286 36152400 61101 CALIF BUILDING BSASRF PERMIT FEES $799.51 $799.51 1/17/2025 34950 OCT - DEC 2025 10132100 44040 CALIF. PEACE OFFICER RENEWAL/T.WILLIAMS $94.50 1/10/2025 34820 449020 10141100 62203 CALIF. PEACE OFFICER RENEWAL/T.WILLIAMS $204.12 1/10/2025 34820 449030 10141100 62203 CALIF. PEACE OFFICER RENEWAL/D.CARLSON $94.50 1/10/2025 34820 449830 10141100 62203 CALIF. PEACE OFFICER RENEWAL/D.CARLSON $204.12 1/10/2025 34820 449840 10141100 62203 CALIF. PEACE OFFICER RENEWAL/B.CHESTNUT $94.50 1/10/2025 34820 450750 10141100 62203 CALIF. PEACE OFFICER RENEWAL/B.CHESTNUT $204.12 1/10/2025 34820 450760 10141100 62203 CALIF. PEACE OFFICER RENEWAL/M.PISTELLO $94.50 1/10/2025 34820 450860 10141100 62203 CALIF. PEACE OFFICER RENEWAL/M.PISTELLO $204.12 1/10/2025 34820 450870 10141100 62203 CALIF. PEACE OFFICER RENEWAL/M.GUNNING $94.50 1/10/2025 34820 451630 10141100 62203 CALIF. PEACE OFFICER RENEWAL/M.GUNNING $204.12 1/10/2025 34820 451640 10141100 62203 CALIF. PEACE OFFICER RENEWAL/J.CRANFORD $298.62 1/10/2025 34820 455850 10141100 62203 CALIF. PEACE OFFICER RENEWAL/L.PELAYO $298.62 1/10/2025 34820 455870 10141100 62203 CALIF. PEACE OFFICER RENEWAL/T.WILLIAMS $55.50 1/10/2025 34820 449020 34341100 62203 CALIF. PEACE OFFICER RENEWAL/T.WILLIAMS $119.88 1/10/2025 34820 449030 34341100 62203 CALIF. PEACE OFFICER RENEWAL/D.CARLSON $55.50 1/10/2025 34820 449830 34341100 62203 CALIF. PEACE OFFICER RENEWAL/D.CARLSON $119.88 1/10/2025 34820 449840 34341100 62203 CALIF. PEACE OFFICER RENEWAL/B.CHESTNUT $55.50 1/10/2025 34820 450750 34341100 62203 CALIF. PEACE OFFICER RENEWAL/B.CHESTNUT $119.88 1/10/2025 34820 450760 34341100 62203 CALIF. PEACE OFFICER RENEWAL/M.PISTELLO $55.50 1/10/2025 34820 450860 34341100 62203 CALIF. PEACE OFFICER RENEWAL/M.PISTELLO $119.88 1/10/2025 34820 450870 34341100 62203 CALIF. PEACE OFFICER RENEWAL/M.GUNNING $55.50 1/10/2025 34820 451630 34341100 62203 CALIF. PEACE OFFICER RENEWAL/M.GUNNING $119.88 1/10/2025 34820 451640 34341100 62203 CALIF. PEACE OFFICER RENEWAL/J.CRANFORD $175.38 1/10/2025 34820 455850 34341100 62203 CALIF. PEACE OFFICER RENEWAL/L.PELAYO $175.38 $3,318.00 1/10/2025 34820 455870 34341100 62203 CALIFORNIA ASSOCIATION OF GHAD 2025 GHAD DUES $1,500.00 $1,500.00 1/24/2025 35045 546 36152400 62203 CALIFORNIA BANK RETENTION RELEASE 905328/EST 30 $44,831.77 $44,831.77 1/24/2025 35046 ESCROW*ACCT #1147362 40100000 20105

Page 9 of 40 ends

5.5.a
Packet Pg. 24
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $466.00 1/24/2025 35047 01-109123 10153409 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $461.00 1/24/2025 35047 01-109124 10153418 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $475.00 1/24/2025 35047 01-109125 10153401 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $433.00 1/24/2025 35047 01-109126 10153409 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $315.50 1/24/2025 35047 01-109127 10153419 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $315.50 1/24/2025 35047 01-109127 10153420 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $500.00 1/24/2025 35047 01-109128 34353415 61119 CALIFORNIA DIESEL & POWER GENERATOR MAINTENANCE $466.00 $3,432.00 1/24/2025 35047 01-109129 34353415 61119 CALMAT CO. ASPHALT $415.84 1/3/2025 34765 2255108 10153802 62014 CALMAT CO. POWER PATCH TON $738.29 $1,154.13 1/31/2025 35114 73859553 10153802 62014 CAL-MOTO RENEW FRONT TIRES #510 $235.77 1/10/2025 34819 3034354/1 10142200 61111 CAL-MOTO CHANGE BRAKE FLUID #513 $149.34 1/10/2025 34819 3034357/1 10142200 61111 CAL-MOTO RENEW FRONT TIRES #510 $138.47 1/10/2025 34819 3034354/1 34342200 61111 CAL-MOTO CHANGE BRAKE FLUID #513 $87.71 $611.29 1/10/2025 34819 3034357/1 34342200 61111 CANVA RECRUITMENT HOLIDAY CARDS $160.00 1/24/2025 35102 81678 10160200 61001 CANVA GRAPHIC EDITING SOFTWATE RENEWAL $189.00 1/24/2025 35102 81741 10141400 61010 CANVA GRAPHIC EDITING SOFTWATE RENEWAL $111.00 $460.00 1/24/2025 35102 81741 34341400 61010 CARAHSOFT TECHNOLOGY MICROSOFT AZURE CLOUD STORAGE SUBSCRIPTION $338.97 $338.97 1/24/2025 35048 IN1873083 10123100 61010 CAREWELL STERILE WATER LIQUID $16.97 1/24/2025 35102 81613 10141600 62008 CAREWELL STERILE WATER LIQUID $9.97 $26.94 1/24/2025 35102 81613 34341600 62008 CCC SHERIFF-LETC RANGE USE 11/2-11/11 $157.50 1/24/2025 35049 24-3762 10141403 61004 CCC SHERIFF-LETC RANGE USE 11/2-11/11 $393.75 1/24/2025 35049 24-3762 10141500 65001 CCC SHERIFF-LETC RANGE USE 11/2-11/11 $92.50 1/24/2025 35049 24-3762 34341403 61004 CCC SHERIFF-LETC RANGE USE 11/2-11/11 $231.25 $875.00 1/24/2025 35049 24-3762 34341500 65001 CCC-IT DEPT. TELECOMMUNICATION SERVICE 10/24 $699.70 1/3/2025 34766 16224 10142400 61101 CCC-IT DEPT. TELECOMMUNICATION SERVICE 10/24 $410.94 $1,110.64 1/3/2025 34766 16224 34342400 61101 CENTRAL PETROLEUM MAINTENANCE ANNUAL VAPOR RECOVERY TESTING/REPAIRS $1,450.00 1/17/2025 34951 I5903 10153701 61101 CENTRAL PETROLEUM MAINTENANCE ANNUAL VAPOR RECOVERY TESTING/REPAIRS $1,833.62 $3,283.62 1/24/2025 35050 I6000 10153701 61101 CHAMPION BATTERY SALES, LLC UPS BATTERY REPLACEMENT $255.00 $255.00 1/24/2025 35102 81795 10123100 62008 CHAWLA, TANISHKA COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34767 JAN 2025 10160101 61001 CHEVRON USA INC FUEL $17.31 1/24/2025 35102 81623 10141100 62020 CHEVRON USA INC FUEL $10.17 1/24/2025 35102 81623 34341100 62020 CHEVRON USA INC FUEL $71.80 1/24/2025 35102 81624 10141100 62020 CHEVRON USA INC FUEL $42.17 1/24/2025 35102 81624 34341100 62020

Page 10 of 40 ends

5.5.a
Packet Pg. 25
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
CHEVRON USA INC FUEL $31.53 1/24/2025 35102 81695 10141100 62020 CHEVRON USA INC FUEL $18.52 1/24/2025 35102 81695 34341100 62020 CHEVRON USA INC FUEL $17.60 1/24/2025 35102 81703 10141100 62020 CHEVRON USA INC FUEL $10.33 1/24/2025 35102 81703 34341100 62020 CHEVRON USA INC FUEL $15.37 1/24/2025 35102 81704 10141100 62020 CHEVRON USA INC FUEL $9.03 1/24/2025 35102 81704 34341100 62020 CHEVRON USA INC FUEL $14.50 1/24/2025 35102 81717 10141100 62020 CHEVRON USA INC FUEL $8.51 1/24/2025 35102 81717 34341100 62020 CHEVRON USA INC FUEL $17.01 1/24/2025 35102 81718 10141100 62020 CHEVRON USA INC FUEL $9.99 1/24/2025 35102 81718 34341100 62020 CHEVRON USA INC FUEL $14.50 1/24/2025 35102 81720 10141100 62020 CHEVRON USA INC FUEL $8.51 1/24/2025 35102 81720 34341100 62020 CHEVRON USA INC FUEL $13.59 1/24/2025 35102 81730 10141100 62020 CHEVRON USA INC FUEL $7.98 1/24/2025 35102 81730 34341100 62020 CHEVRON USA INC FUEL $16.81 1/24/2025 35102 81731 10141100 62020 CHEVRON USA INC FUEL $9.88 1/24/2025 35102 81731 34341100 62020 CHEVRON USA INC FUEL $30.87 1/24/2025 35102 81738 10141100 62020 CHEVRON USA INC FUEL $18.13 1/24/2025 35102 81738 34341100 62020 CHEVRON USA INC FUEL $15.44 1/24/2025 35102 81739 10141100 62020 CHEVRON USA INC FUEL $9.06 $438.61 1/24/2025 35102 81739 34341100 62020 CHEW, LYNN DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35152 81479477 10100000 20108 CHUANG, WEI-TING VISUAL ARTS CLASSES $590.00 $590.00 1/10/2025 34821 27181-27815 10160408 44055 CITY OF OAKLEY REGISTRATION/R.JWEINAT $70.00 $70.00 1/10/2025 34822 REG 1/9/25 10111000 65003 CIVICPLUS, INC REGISTRATION/V.PHILLIPS $30.00 $30.00 1/24/2025 35102 81759 10132100 65001 CJIS SOLUTIONS, LLC SERVER/VIDEO STORAGE 1/25 $490.14 1/10/2025 34823 INV-2025-5003 10141100 61101 CJIS SOLUTIONS, LLC SERVER/VIDEO STORAGE 1/25 $287.86 $778.00 1/10/2025 34823 INV-2025-5003 34341100 61101 CLAY PLANET CERAMICS PROGRAM SUPPLIES $1,636.73 $1,636.73 1/3/2025 34768 229283 10160408 62016 CLEAN HARBORS ENVIRONMENTAL HHW D2D COLLECTION 10/24 $1,956.00 1/10/2025 34824 1005286428 34453201 61001 CLEAN HARBORS ENVIRONMENTAL HHW D2D COLLECTION 11/24 $15,550.00 1/17/2025 34952 1005290752 34453201 61001 CLEAN HARBORS ENVIRONMENTAL HHW D2D COLLECTION 12/24 $6,577.00 $24,083.00 1/17/2025 34952 1005313779 34453201 61001 CLEARS-NORTHERN REGISTRATION/V.POWELL $12.60 1/24/2025 35102 81661 10141500 65001 CLEARS-NORTHERN REGISTRATION/V.POWELL $7.40 $20.00 1/24/2025 35102 81661 34341500 65001 COMCAST CABLE SERVICE CH 12/9-1/8 $168.67 1/3/2025 34769 81554001709128671224 10123300 61301 COMCAST CABLE SERVICE PCS 1/8-2/7 $583.31 1/10/2025 34825 81554001700612281224 10160100 61301 COMCAST CABLE SERVICE CH 1/9-2/8 $173.31 $925.29 1/17/2025 34953 8155400170912867 125 10123100 61301

Page 11 of 40 ends

5.5.a
Packet Pg. 26
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
COMCAST BUSINESS GUEST INTERNET 11/24 $291.79 1/3/2025 34770 225425842 10123300 61301 COMCAST BUSINESS GUEST INTERNET 11/24 $154.78 1/3/2025 34770 225425842 10141100 61301 COMCAST BUSINESS GUEST INTERNET 11/24 $824.15 1/3/2025 34770 225425842 10160106 61301 COMCAST BUSINESS GUEST INTERNET 11/24 $90.90 1/3/2025 34770 225425842 34341100 61301 COMCAST BUSINESS GUEST INTERNET 12/24 $824.15 1/17/2025 34954 229269658 10160106 61301 COMCAST BUSINESS GUEST INTERNET 12/24 $154.78 1/17/2025 34954 229269658 10141100 61301 COMCAST BUSINESS GUEST INTERNET 12/24 $291.79 1/17/2025 34954 229269658 10123300 61301 COMCAST BUSINESS GUEST INTERNET 12/24 $90.90 $2,723.24 1/17/2025 34954 229269658 34341100 61301 COMFORT INTERNATIONAL HVAC REPAIRS $3,264.10 $3,264.10 1/10/2025 34826 INV 16512 40100000 67012 COMPUTERSHARE TRUST POB TRUSTEE FEE 1/21/25-1/20/26 $3,000.00 $3,000.00 1/24/2025 35051 2403483 50100000 68006 CONCORD UNIFORMS UNIFORMS $283.31 1/17/2025 34955 21542 10141100 62017 CONCORD UNIFORMS UNIFORMS $166.39 1/17/2025 34955 21542 34341100 62017 CONCORD UNIFORMS UNIFORMS $2,168.55 1/17/2025 34955 21575 60241100 67004 CONCORD UNIFORMS UNIFORMS $1,366.19 1/24/2025 35052 21578 10141100 62017 CONCORD UNIFORMS UNIFORMS $1,366.19 1/24/2025 35052 21579 10141100 62017 CONCORD UNIFORMS UNIFORMS $802.36 1/24/2025 35052 21578 34341100 62017 CONCORD UNIFORMS UNIFORMS $802.36 $6,955.35 1/24/2025 35052 21579 34341100 62017 CONSTRUCTION ZONE GOLDEN VIEW SCHOOL SIGNS $326.25 $326.25 1/17/2025 34956 47504 10153615 62008 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 10153614 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 10153405 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 10153601 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $6,839.35 1/10/2025 34827 24/25 2ND INSTALL 10153411 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $1,337.76 1/10/2025 34827 24/25 2ND INSTALL 10153404 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $2,006.64 1/10/2025 34827 24/25 2ND INSTALL 10153408 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $2,006.64 1/10/2025 34827 24/25 2ND INSTALL 10153409 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $1,783.68 1/10/2025 34827 24/25 2ND INSTALL 10153402 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $1,114.80 1/10/2025 34827 24/25 2ND INSTALL 10153405 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $1,783.68 1/10/2025 34827 24/25 2ND INSTALL 10153606 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $352.70 1/10/2025 34827 24/25 2ND INSTALL 30153503 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 34353655 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 34353657 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $323.50 1/10/2025 34827 24/25 2ND INSTALL 34353669 61305 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $237.80 1/10/2025 34827 24/25 2ND INSTALL 34353415 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $336.40 1/10/2025 34827 24/25 2ND INSTALL 34353414 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $290.72 1/10/2025 34827 24/25 2ND INSTALL 34353413 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $826.50 1/10/2025 34827 24/25 2ND INSTALL 34353412 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $2,898.48 1/10/2025 34828 24/25 2ND INSTALL* 10153403 65107 CONTRA COSTA CO. TAX PROPERTY TAXES FY 24/25 $2,229.60 $25,985.75 1/10/2025 34828 24/25 2ND INSTALL* 10153401 65107 CONTRA COSTA ENVIRONMENTAL BAH HUMBUG FITNESS RACE TEMPORARY FOOD PERMIT $241.00 $241.00 1/24/2025 35102 81762 10160804 61001

Page 12 of 40 ends

5.5.a
Packet Pg. 27
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
CONTRA COSTA HEALTH SERVICES MEAL INCOME 12/24 $1,633.75 1/17/2025 34957 DEC 2024 10100000 20616 CONTRA COSTA HEALTH SERVICES MEAL INCOME 11/24 $1,538.93 $3,172.68 1/17/2025 34957 NOV 2024 10100000 20616 CONTRACT SWEEPING SERVICES STREET SWEEP SERVICE 12/24 $400.23 1/17/2025 34958 24001061 34253808 61110 CONTRACT SWEEPING SERVICES STREET SWEEP SERVICE 12/24 $83,340.86 $83,741.09 1/17/2025 34958 24001061 34453803 61110 CORELOGIC SOLUTIONS PARCEL MAPS SUBSCRIPTION $265.23 $265.23 1/10/2025 34829 30754279 10123100 61010 CORODATA RECORDS MANAGEMENT 12/24 $977.84 $977.84 1/17/2025 34959 RS3684700 10114100 61001 CORODATA SHREDDING SHREDDING SERVICE $227.69 $227.69 1/24/2025 35053 DN 1502749 10114100 61001 COSTCO EMPLOYEE EVENT HOLIDAY PARTY SUPPLIES $43.45 1/24/2025 35102 81635 10122300 65101 COSTCO PAINT & SIP EVENT REFRESHMENTS $5.99 1/24/2025 35102 81659 10122500 62101 COSTCO FRONT LINE CUSTOMER SERVICE TRAINING BASKET $40.23 1/24/2025 35102 81670 10160105 65001 COSTCO YOUTH HOOPS GRANOLA BARS $21.18 1/24/2025 35102 81672 10160834 62016 COSTCO YOUTH HOOPS CANDY/FRUIT SNACKS $55.67 1/24/2025 35102 81673 10160834 62016 COSTCO TEEN END OF YEAR PARTY SUPPLIES/SNACKS $100.76 1/24/2025 35102 81677 10160633 62016 COSTCO BAH HUMBUG RACE SUPPLIES $800.11 1/24/2025 35102 81767 10160804 62016 COSTCO ANNUAL HOLIDAY PARTY SNACKS/REFRESHMENTS $95.47 $1,162.86 1/24/2025 35102 81827 10122300 65101 COSTCO WHOLESALE MEMBERSHIP ANNUAL COSTCO MEMBERSHIP RENEWAL $130.00 $130.00 1/24/2025 35102 81766 10122100 62203 COUNTRY CLUB CLEANERS LINEN CLEANING $67.86 1/24/2025 35102 81724 10141100 61001 COUNTRY CLUB CLEANERS LINEN CLEANING $39.85 1/24/2025 35102 81724 34341100 61001 COUNTRY CLUB CLEANERS LINEN CLEANING $46.92 1/24/2025 35102 81725 10141100 61001 COUNTRY CLUB CLEANERS LINEN CLEANING $27.56 $182.19 1/24/2025 35102 81725 34341100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $256.26 1/10/2025 34830 25041 10151100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $173.11 1/10/2025 34830 25042 10151100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $169.48 1/10/2025 34830 25041 34751600 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $266.13 1/10/2025 34830 25042 34751600 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $162.90 1/17/2025 34960 25096 10151100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $154.12 1/17/2025 34960 25097 10151100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $19,918.49 1/17/2025 34960 25056 34751603 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $297.63 1/17/2025 34960 25096 34751600 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $201.09 1/17/2025 34960 25097 34751600 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $125.84 1/24/2025 35054 25040 10151100 61001 COUNTY CONNECTION SENIORS TRANSIT PROGRAM $157.21 $21,882.26 1/24/2025 35054 25040 34751600 61001 CPRS RENEWAL/K. BOGGS $150.00 1/3/2025 34771 134632 24/25 10160105 62203 CPRS RENEWAL/J.REABER $150.00 1/17/2025 34961 120541 24/25 10160105 62203 CPRS RENEWAL/K. HEIMANN $555.00 1/17/2025 34962 002887 24/25 10160105 62203 CPRS 2024 CPRS AWARDS OF EXCELLENCE CAROL ROWLEY $85.00 1/24/2025 35102 81701 10160108 61001 CPRS REGISTRATION/M. MLYNIEC $75.00 1/24/2025 35102 81702 10160105 65001

Page 13 of 40 ends

5.5.a
Packet Pg. 28
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
CPRS REGISTRATION/B. ADAMS $55.00 1/24/2025 35102 81745 10160105 65001 CPRS AWARD SUBMISSION FOR TRICK OR TREAT ON THE FARM $85.00 $1,155.00 1/24/2025 35102 81808 10160108 61001 CPRS DISTRICT III REGISTRATION/A. MENDES $16.00 1/24/2025 35102 81669 10160105 65001 CPRS DISTRICT III REGISTRATION/M. MLYNIEC $100.00 1/24/2025 35102 81699 10160105 65001 CPRS DISTRICT III REGISTRATION/K. SCHILLER $25.00 $141.00 1/24/2025 35102 81700 10160105 65001 CREATIVE SUPPORTS ERGONOMIC EQUIPMENT/INSTALLATION $1,260.60 1/3/2025 34772 34279 10122500 62101 CREATIVE SUPPORTS ERGONOMIC EQUIPMENT/INSTALLATION $1,440.77 $2,701.37 1/3/2025 34772 34280 10122500 62101 CSMFO MEMBERSHIP/S.KOLL $150.00 1/24/2025 35102 81733 10112100 62203 CSMFO RENEWAL/V.GONG $150.00 $300.00 1/24/2025 35055 300017148 10121100 62203 CURRICULUM DEVELOPMENT BL/HOP OVERPAYMENT REFUND $461.10 $461.10 1/17/2025 34995 REFUND 1/14/25 10132100 44028 CURTIS, DAVID NORMAN COMMISSIONER STIPEND $250.00 $250.00 1/3/2025 34773 JAN 2025 10131100 61012 D & S BODY SHOP, INC AUTO BODY REPAIR #94 $8,727.96 $8,727.96 1/24/2025 35056 31100 10153703 61200 DAINTY DONUTS COFFEE WITH THE COPS DONUTS $25.83 1/24/2025 35102 81610 10141401 65102 DAINTY DONUTS COFFEE WITH THE COPS DONUTS $15.17 $41.00 1/24/2025 35102 81610 34341401 65102 DANVILLE AREA CHAMBER RENEWAL/511 CC MEMBERSHIP $332.00 $332.00 1/24/2025 35102 81710 34751600 62203 DAVE BANG ASSOCIATES, INC RANCHO PLAYGROUND REPLACEMENT PARTS $207.35 1/10/2025 34831 CA57522 34353667 62007 DAVE BANG ASSOCIATES, INC PLAYGROUND PARTS $493.66 $701.01 1/31/2025 35115 CA57648 34353667 62007 DC ELECTRIC GROUP, INC INSTALL ALCOSTA SOLAR FLASHING BEACONS $3,925.00 1/24/2025 35057 475665 40100000 67012 DC ELECTRIC GROUP, INC ITERIS CAMERA INSTALLATION $36,400.00 $40,325.00 1/31/2025 35116 475924 40100000 67012 DE OLIVEIRA, ANA PAU DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35153 81479453 10100000 20108 DENNIS, SUSANNE DANCE CLASSES $262.50 $262.50 1/3/2025 34774 27101-27335 10160436 44060 DEPARTMENT OF CONSERVATION SMIP FEES $2,274.55 1/17/2025 34963 OCT-DEC 2024 10132100 44038 DEPARTMENT OF CONSERVATION SMIP FEES $6,816.24 $9,090.79 1/17/2025 34963 OCT-DEC 2024 10132100 44039 DEPT OF JUSTICE FINGERPRINTING 10/24 $480.00 1/3/2025 34775 774139 10122400 61001 DEPT OF JUSTICE FINGERPRINTING 11/24 $32.00 1/3/2025 34775 781130 10122400 61001 DEPT OF JUSTICE FINGERPRINTING 12/24 $128.00 $640.00 1/24/2025 35058 787425 10122400 61001 DESILVA GATES CONSTRUCTION LP CROW CANYON WIDENING PROJECT CIP 905328 $851,803.68 $851,803.68 1/17/2025 34964 EST 30 11/24 40100000 67012 DHOOT, SACHIN RENTAL DEPOSIT REFUND $500.00 1/10/2025 34876 80738750 10100000 20108 DHOOT, SACHIN RENTAL DEPOSIT REFUND $100.00 $600.00 1/10/2025 34877 80738737 10100000 20108

Page 14 of 40 ends

5.5.a
Packet Pg. 29
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
DIGICERT SERVER CERTIFICATE $156.00 1/24/2025 35102 81801 10123100 61102 DIGICERT SERVER CERTIFICATE $312.00 $468.00 1/24/2025 35102 81802 10123100 61102 DIPIETRO & ASSOCIATES, INC AED ELECTRODES/PEDI PADZ/BATTERIES $665.88 1/17/2025 34965 122475 10142400 62017 DIPIETRO & ASSOCIATES, INC AED ELECTRODES/PEDI PADZ/BATTERIES $391.07 $1,056.95 1/17/2025 34965 122475 34342400 62017 DIRECTV, LLC MONTHLY SERVICE $50.39 1/24/2025 35102 81748 10141100 61301 DIRECTV, LLC MONTHLY SERVICE $29.60 $79.99 1/24/2025 35102 81748 34341100 61301 DIVISION OF THE STATE ARCHITEC REGISTRATION/S.TSUI $500.00 1/24/2025 35102 81751 10100000 20605 DIVISION OF THE STATE ARCHITEC REGISTRATION/D.LAU $100.00 1/24/2025 35102 81752 10100000 20605 DIVISION OF THE STATE ARCHITEC REGISTRATION/D.LEWIS $500.00 1/24/2025 35102 81753 10100000 20605 DIVISION OF THE STATE ARCHITEC RENEWAL/V.PHILLIPS $100.00 $1,200.00 1/24/2025 35102 81760 10100000 20605 DODDS, MIKE COMPUTER LOAN REIMBURSEMENT $1,418.15 $1,418.15 1/17/2025 34966 1/15/25 10100000 11011 DOERLICH, WILLIAM COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34776 JAN 2025 10160101 61001 DOLLAR TREE STORES YOUTH HOOPS GOODIE BAGS $12.23 $12.23 1/24/2025 35102 81671 10160834 62016 DOVER CONSTRUCTION TASK 7-CROW CANYON ROAD WIDENING PROJECT $49,214.55 $49,214.55 1/17/2025 34967 121324-3 40100000 67012 DRALA PROJECT INC. PD VXRAIL ANNUAL SUBSCRIPTON $13,854.40 $13,854.40 1/3/2025 34777 9435 10123100 61010 DTA PUBLIC FINANCE COST RECOVERY/IMPACT FEES $8,710.00 $8,710.00 1/17/2025 34968 2411014 20131100 61001 EBMUD WATER SERVICE 10/26-1/7 $128.58 1/17/2025 34969 010725 10153617 61305 EBMUD WATER SERVICE 10/26-1/7 $10,589.50 1/17/2025 34969 010725 10153302 61305 EBMUD WATER SERVICE 10/26-1/7 $572.78 1/17/2025 34969 010725 10153611 61305 EBMUD WATER SERVICE 10/26-1/7 $215.26 1/17/2025 34969 010725 10153610 61305 EBMUD WATER SERVICE 10/26-1/7 $368.42 1/17/2025 34969 010725 10153612 61305 EBMUD WATER SERVICE 9/29-12/31 $546.44 1/17/2025 34969 123124 10153608 61305 EBMUD WATER SERVICE 9/29-12/31 $700.72 1/17/2025 34969 123124 10153619 61305 EBMUD WATER SERVICE 10/26-1/7 $896.66 1/17/2025 34969 010725 30153501 61305 EBMUD WATER SERVICE 9/29-12/31 $596.78 1/17/2025 34969 123124 30153501 61305 EBMUD WATER SERVICE 10/26-1/7 $453.48 1/17/2025 34969 010725 30753510 61305 EBMUD WATER SERVICE 10/26-1/7 $1,048.05 1/17/2025 34969 010725 30753520 61305 EBMUD WATER SERVICE 10/26-1/7 $156.18 1/17/2025 34969 010725 30853510 61305 EBMUD WATER SERVICE 10/26-1/7 $9.89 1/17/2025 34969 010725 31053510 61305 EBMUD WATER SERVICE 10/26-1/7 $9.89 1/17/2025 34969 010725 31053520 61305 EBMUD WATER SERVICE 9/29-12/31 $607.66 1/17/2025 34969 123124 31253510 61305 EBMUD WATER SERVICE 9/29-12/31 $210.48 1/17/2025 34969 123124 31453510 61305 EBMUD WATER SERVICE 9/29-12/31 $477.28 1/17/2025 34969 123124 31553520 61305 EBMUD WATER SERVICE 9/29-12/31 $218.78 1/17/2025 34969 123124 31553510 61305 EBMUD WATER SERVICE 10/26-1/7 $142.08 1/17/2025 34969 010725* 40100000 67012

Page 15 of 40 ends

5.5.a
Packet Pg. 30
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
EBMUD WATER SERVICE 9/4-11/1 $10,984.36 $28,933.27 1/17/2025 34969 110824 40100000 67012 ECONOLITE CONTROL PRODUCTS INSTALL PEDESTRIAN PUSH BUTTON STATION $2,824.00 $2,824.00 1/10/2025 34832 INV228170 40100000 67012 ED JONES CO INC BADGES $112.77 1/17/2025 34970 57380 10141100 62018 ED JONES CO INC BADGES $66.23 $179.00 1/17/2025 34970 57380 34341100 62018 EKSIRI, HAMED ACTIVITY REFUND $80.00 $80.00 1/31/2025 35154 81666587 10100000 20108 ENTERPRISE RIDESHARE VP START UP INCENTIVE 1/25 $3,800.00 1/17/2025 34971 E000141JAN2025 34751603 61001 ENTERPRISE RIDESHARE VP START UP INCENTIVE 2/25 $4,200.00 $8,000.00 1/31/2025 35117 E000141FEB2025 34751603 61001 ETSY CREDIT-PUBLIC ART DEDICATION RIBBON -$46.76 1/24/2025 35102 81619 10160404 62016 ETSY PUBLIC ART DEDICATION RIBBON $46.76 1/24/2025 35102 81620 10160404 62016 ETSY PUBLIC ART DEDICATION RIBBON $65.20 $65.20 1/24/2025 35102 81621 10160404 62016 EVALCORP ORGANIZED RETAIL THEFT EVALUATION SERVICES $4,000.00 $4,000.00 1/24/2025 35059 SRPD-ORT-02 10142600 61001 EVENTBRITE, INC REGISTRATION/Z.REDZIC $437.85 1/24/2025 35102 81783 10141500 65001 EVENTBRITE, INC REGISTRATION/Z.REDZIC $257.15 $695.00 1/24/2025 35102 81783 34341500 65001 EVERPRO KIDS VISUAL ARTS CLASSES $950.00 $950.00 1/3/2025 34778 27153-27154 10160408 44055 EVERYTHING GROWS INTERIOR PLANT CARE $593.94 $593.94 1/10/2025 34833 57154 10153401 61119 EWING IRRIGATION PRODUCTS MOUND CLAY $728.62 1/17/2025 34972 24415339 10153600 62006 EWING IRRIGATION PRODUCTS MOUND CLAY $728.61 $1,457.23 1/17/2025 34972 24415339 34353600 62006 EXECUTIVE EDUCATION REGISTRATION/B.CHESTNUT $1,258.74 1/24/2025 35102 81648 10141500 65001 EXECUTIVE EDUCATION REGISTRATION/B.CHESTNUT $739.26 $1,998.00 1/24/2025 35102 81648 34341500 65001 FACEBOOK, INC PRESENTING SERIES FACEBOOK ADVERTISING $299.45 $299.45 1/24/2025 35102 81708 10160432 61001 FAMILY LAW GROUP, INC SUBPOENA DEPOSIT REFUND $275.00 $275.00 1/17/2025 34996 D24-01100 10100000 20608 FAROOQUEE, RABIA RENTAL CANCELLATION REFUND $94.00 $94.00 1/10/2025 34878 80871971 10100000 20108 FAST WATER HEATER PARTNER LLC DUPLICATE PERMIT FEE REFUND $120.00 1/3/2025 34790 PLMB-2024-1543 10132200 42042 FAST WATER HEATER PARTNER LLC DUPLICATE PERMIT FEE REFUND $0.50 1/3/2025 34790 PLMB-2024-1543 10132100 44038 FAST WATER HEATER PARTNER LLC DUPLICATE PERMIT FEE REFUND $1.00 1/3/2025 34790 PLMB-2024-1543 10132100 44040 FAST WATER HEATER PARTNER LLC DUPLICATE PERMIT FEE REFUND $8.66 $130.16 1/3/2025 34790 PLMB-2024-1543 60332100 44073 FASTENAL COMPANY UTILITY KNIFE/TAPE/PVC/WD-40/CAUTION TAPE $66.32 1/10/2025 34834 CALIV128997 10153600 62008 FASTENAL COMPANY GLOVES/COVERALLS $409.31 1/10/2025 34834 CALIV128992 10153100 62017 FASTENAL COMPANY MEMO PAD/BATTERIES $36.03 1/10/2025 34834 CALIV128998 10153100 62101

Page 16 of 40 ends

5.5.a
Packet Pg. 31
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
FASTENAL COMPANY UTILITY KNIFE/TAPE/PVC/WD-40/CAUTION TAPE $107.37 1/10/2025 34834 CALIV128997 34353415 62008 FASTENAL COMPANY UTILITY KNIFE/TAPE/PVC/WD-40/CAUTION TAPE $178.60 1/10/2025 34834 CALIV128997 34353400 62008 FASTENAL COMPANY UTILITY KNIFE/TAPE/PVC/WD-40/CAUTION TAPE $9.56 $807.19 1/10/2025 34834 CALIV128997 34353807 62008 FASTRAK TOLL FEES $15.75 1/24/2025 35102 81652 10142500 65004 FASTRAK TOLL FEES $9.25 $25.00 1/24/2025 35102 81652 34342500 65004 FASTSIGNS COUNCIL NAMEPLATES $85.74 1/10/2025 34835 48-113269 10111000 61001 FASTSIGNS ROOM OCCUPANCY SIGN $32.63 1/10/2025 34835 48-113263 10153419 62008 FASTSIGNS PICNIC AREA QR CODE SIGNS $75.14 1/10/2025 34835 48-113282 10160310 62008 FASTSIGNS NAME BADGE $45.90 1/24/2025 35102 81814 10111000 62101 FASTSIGNS NAME BADGE $45.90 1/24/2025 35102 81815 10111000 62101 FASTSIGNS OFFICE NAMEPLATES $38.07 $323.38 1/31/2025 35118 48-113550 10111000 61001 FCS INTERNATIONAL BISHOP RANCH BARLET 7 DEVELOPMENT $5,000.00 $5,000.00 1/3/2025 34779 00076910 10131100 61005 FEDEX OFFICE SHIPPING FEE $29.28 1/24/2025 35102 81679 10141100 62103 FEDEX OFFICE SHIPPING FEE $17.20 $46.48 1/24/2025 35102 81679 34341100 62103 FEHR & PEERS TASK 3 -BIKE MASTER PLAN UPDATE $13,721.20 1/24/2025 35060 178253 40100000 67012 FEHR & PEERS TASK 3-BIKE MASTER PLAN UPDATE $5,871.76 1/24/2025 35060 178833 40100000 67012 FEHR & PEERS TASK 3-BIKE MASTER PLAN UPDATE $3,923.07 $23,516.03 1/31/2025 35119 179909 40100000 67012 FILEONQ, INC. PROPERTY/EVIDENCE SOFTWARE $819.00 1/17/2025 34973 12737 10141600 61010 FILEONQ, INC. PROPERTY/EVIDENCE SOFTWARE $481.00 $1,300.00 1/17/2025 34973 12737 34341600 61010 FIRE PROTECTION SPECIALIST, INC FIRE SPRINKLER SYSTEM REPAIRS $4,327.49 1/24/2025 35061 63194 10153406 61101 FIRE PROTECTION SPECIALIST, INC AMADOR RANCHO CADDY FIRE SYSTEM REPAIRS $227.51 1/24/2025 35061 63039 34353667 61101 FIRE PROTECTION SPECIALIST, INC FIRE EXTINGUISHER REPLACEMENTS $423.80 $4,978.80 1/31/2025 35120 63734 10153701 62008 FOLSOM LAKE FORD INC 2025 FORD EXPLORER 06030 $58,134.76 1/17/2025 34974 FL3602 60242500 67008 FOLSOM LAKE FORD INC 2025 FORD EXPLORER 05733 $58,134.76 $116,269.52 1/17/2025 34974 FL3606 60242500 67008 FRANK & GROSSMAN LANDSCAPE MAINTENANCE 12/24 $16,693.00 1/17/2025 34975 34692 10153615 61106 FRANK & GROSSMAN LANDSCAPE MAINTENANCE 12/24 $19,261.00 $35,954.00 1/17/2025 34975 34692 34353675 61106 FREEDOMPAY, INC TICKETING GATEWAY FEES $74.80 1/10/2025 34836 INV1170380 10160100 61001 FREEDOMPAY, INC TICKETING GATEWAY FEES $45.10 $119.90 1/17/2025 34976 INV1191744 10160100 61001 FRONTPOINT SECURITY EVIDENCE ALARM FEE $34.72 1/24/2025 35102 81747 10141600 61115 FRONTPOINT SECURITY EVIDENCE ALARM FEE $20.39 $55.11 1/24/2025 35102 81747 34341600 61115 GARIMELLA, SRIKANTH VANPOOL DRIVER BONUS $166.67 $166.67 1/24/2025 35079 011425-4 34751603 61001 GARTON TRACTOR INC TRACTOR SWITCH $84.45 $84.45 1/31/2025 35121 P2663706 10153702 62008

Page 17 of 40 ends

5.5.a
Packet Pg. 32
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
GENERAL WHOLESALE ELECTRICAL SUPPLIES $469.72 $469.72 1/31/2025 35122 S6333070.001 10153400 62009 GLOBALSTAR USA EOC SATELLITE PHONES $84.97 1/3/2025 34780 000000082620064 10142400 61301 GLOBALSTAR USA EOC SATELLITE PHONES $49.91 $134.88 1/3/2025 34780 000000082620064 34342400 61301 GOD'S LOVE OUTREACH RENTAL DEPOSIT REFUND $1,000.00 $1,000.00 1/10/2025 34879 80736650 10100000 20108 GOLAPUDI, SATISH RENTAL DEPOSIT REFUND $250.00 $250.00 1/10/2025 34880 80737138 10100000 20108 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $378.00 1/3/2025 34781 14-21383 10142500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $189.00 1/3/2025 34781 14-21384 10142500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $222.00 1/3/2025 34781 14-21383 34342500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $111.00 1/3/2025 34781 14-21384 34342500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $196.88 1/10/2025 34837 14-21524 10142200 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $115.62 1/10/2025 34837 14-21524 34342200 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $200.00 1/17/2025 34977 14-21674 10153703 61101 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $86.63 1/17/2025 34977 14-21564 10142500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $50.87 1/17/2025 34977 14-21564 34342500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $125.00 1/24/2025 35062 14-21721 10153703 61101 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $78.75 1/31/2025 35123 14-21726 10142500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $189.00 1/31/2025 35123 14-21766 10142500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $46.25 1/31/2025 35123 14-21726 34342500 61111 GOLDEN STATE FLEET SERVICES INC TOW SERVICE $111.00 $2,100.00 1/31/2025 35123 14-21766 34342500 61111 GOOGLE YOUTUBE PREMIUM ANNUAL SUBSCRIPTION $13.99 1/24/2025 35102 81685 10112200 62202 GOOGLE GOOGLE STORAGE $1.99 1/24/2025 35102 81686 10112200 62202 GOOGLE YOUTUBE MEMBERSHIP $8.81 1/24/2025 35102 81742 10141401 62203 GOOGLE YOUTUBE MEMBERSHIP $5.18 $29.97 1/24/2025 35102 81742 34341401 62203 GOVERNMENT SOCIAL RENEWAL/A.STEIN $79.00 $79.00 1/24/2025 35102 81698 10153100 62203 GOVT TRAINING AGENCY REGISTRATION/M.ZUBKO $403.62 1/24/2025 35102 81786 10141500 65001 GOVT TRAINING AGENCY REGISTRATION/M.ZUBKO $237.04 $640.66 1/24/2025 35102 81786 34341500 65001 GRAINGER, INC WORK BOOTS $236.45 1/10/2025 34838 9352941331 10153100 62018 GRAINGER, INC SADDLE CLAMP $92.20 1/10/2025 34838 9263111693 34353673 62003 GRAINGER, INC CONSTRUCTION ADHESIVE $28.74 1/17/2025 34978 9342069854 10153804 62008 GRAINGER, INC WORK BOOTS $236.45 1/17/2025 34978 9341164292 10153100 62018 GRAINGER, INC WORK BOOTS $208.59 1/17/2025 34978 9352941323 10153100 62018 GRAINGER, INC URINAL PUSH BUTTON ASSEMBLY $190.01 1/17/2025 34978 9340611830 34353660 62008 GRAINGER, INC HANDLE REPAIR KIT $22.58 1/17/2025 34978 9346463350 34353660 62008 GRAINGER, INC RECIPROCATING SAW BLADES $167.37 1/31/2025 35124 9380440967 10153704 62008 GRAINGER, INC LEVER DOOR HOLDER $23.30 1/31/2025 35124 9380053562 34353400 62008 GRAINGER, INC RECIPROCATING SAW BLADES $167.36 $1,373.05 1/31/2025 35124 9380440967 34353415 62008

Page 18 of 40 ends

5.5.a
Packet Pg. 33
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
GRANDHAM, SIRISHA VANPOOL DRIVER BONUS $166.67 $166.67 1/24/2025 35080 011425-5 34751603 61001 GROBELNY, WLADYSLAW WORK BOOTS REIMBURSEMENT $175.59 $175.59 1/10/2025 34839 REIMB 12/29/24 10132200 62017 HALOG, JORDAN RADAR/LASER OPERATOR COURSE $63.00 1/24/2025 35065 REIMB 12/17-12/20 10141500 65001 HALOG, JORDAN RADAR/LASER OPERATOR COURSE $37.00 $100.00 1/24/2025 35065 REIMB 12/17-12/20 34341500 65001 HAPPY PANDA KIDS DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35155 81479170 10100000 20108 HCI SYSTEMS, INC FIRE ALARM SERVICE CALL $525.00 $525.00 1/17/2025 34979 I0101459 10153418 61101 HD SUPPLY JANITORIAL SUPPLIES $1,478.85 1/10/2025 34840 840652119 10153600 62010 HD SUPPLY JANITORIAL SUPPLIES $1,000.00 1/10/2025 34840 840652119 34353600 62010 HD SUPPLY JANITORIAL SUPPLIES $1,777.11 1/17/2025 34980 840652127 10153400 62010 HD SUPPLY JANITORIAL SUPPLIES $1,777.12 1/17/2025 34980 840652127 34353400 62010 HD SUPPLY JANITORIAL SUPPLIES $580.94 1/24/2025 35066 842785479 10153600 62010 HD SUPPLY JANITORIAL SUPPLIES $1,277.63 1/24/2025 35066 842785487 10153400 62010 HD SUPPLY JANITORIAL SUPPLIES $132.68 1/24/2025 35066 843905787 10153400 62010 HD SUPPLY JANITORIAL SUPPLIES $580.95 1/24/2025 35066 842785479 34353600 62010 HD SUPPLY JANITORIAL SUPPLIES $1,277.63 $9,882.91 1/24/2025 35066 842785487 34353400 62010 HDL SOFTWARE, LLC TOT MANAGEMENT SERVICE $641.03 1/10/2025 34841 SIN045791 10100000 41070 HDL SOFTWARE, LLC TOT MANAGEMENT SERVICE $691.10 $1,332.13 1/31/2025 35125 SIN046634 10100000 41070 HEADCOUNT MGMT TEMP EMPLOYEE SERVICE WEEK ENDING 1/4/25 $738.75 1/10/2025 34842 4290108251 10121100 61008 HEADCOUNT MGMT TEMP EMPLOYEE SERVICE WEEK ENDING 12/21/24 $1,846.88 1/10/2025 34842 4291225241 10121100 61008 HEADCOUNT MGMT TEMP EMPLOYEE SERVICE WEEK ENDING 1/11/25 $1,846.88 1/24/2025 35067 4290115251 10121100 61008 HEADCOUNT MGMT TEMP EMPLOYEE SERVICE WEEK ENDING 1/18/25 $1,846.88 1/24/2025 35067 4290122251 10121100 61008 HEADCOUNT MGMT TEMP EMPLOYEE SERVICE WEEK ENDING 1/25/25 $738.75 $7,018.14 1/31/2025 35126 4290129251 10121100 61008 HERC RENTALS MESSAGE BOARD RENTAL $859.15 $859.15 1/17/2025 34981 35143498-001 10160804 61201 HF&H CONSULTANTS SOLID WASTE CONSULTING $622.50 $622.50 1/24/2025 35068 9721805 34453201 61005 HOME DEPOT COMMAND STRIPS $4.44 1/24/2025 35102 81612 10141100 62101 HOME DEPOT COMMAND STRIPS $2.60 1/24/2025 35102 81612 34341100 62101 HOME DEPOT SOUYEN PARK LIME AND RUST REMOVER $6.83 1/24/2025 35102 81633 34353671 62008 HOME DEPOT SCREWS $3.78 1/24/2025 35102 81644 10141100 62101 HOME DEPOT SCREWS $2.22 1/24/2025 35102 81644 34341100 62101 HOME DEPOT PARK RESTROOM LUMBER FOR DRY ROT REPAIR $505.30 1/24/2025 35102 81650 34353665 62008 HOME DEPOT SROP SIXAFLEX CONCRETE REPAIR $59.05 1/24/2025 35102 81656 10153302 62008 HOME DEPOT SPADE MIXER $169.79 1/24/2025 35102 81667 10160408 62016 HOME DEPOT SAKRETE FENCE POST MIX $278.44 1/24/2025 35102 81680 34353805 62008 HOME DEPOT 2 X 4'S FOR POOL DECK REPAIRS $84.34 1/24/2025 35102 81682 34353301 62008 HOME DEPOT SUNRISE RIDGE PARK TENNIS & DUGOUT TRASH CANS $84.73 1/24/2025 35102 81691 10153621 62008

Page 19 of 40 ends

5.5.a
Packet Pg. 34
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
HOME DEPOT SUNRISE RIDGE PARK TENNIS COURT HEADERBOARD $65.37 1/24/2025 35102 81692 10153621 62008 HOME DEPOT CENTRAL PARK EXTERIOR CADDY LIGHTS $19.58 1/24/2025 35102 81693 10153605 62008 HOME DEPOT TAPE MEASURE/MARKING PAINT $101.52 1/24/2025 35102 81723 10142200 62017 HOME DEPOT TAPE MEASURE/MARKING PAINT $59.63 1/24/2025 35102 81723 34342200 62017 HOME DEPOT PARKS HARDWARE $13.01 1/24/2025 35102 81734 10153621 62008 HOME DEPOT PAINT/CLEANING SUPPLIES $145.08 1/24/2025 35102 81735 10153401 62008 HOME DEPOT PAINT/CLEANING SUPPLIES $52.64 1/24/2025 35102 81735 10153404 62008 HOME DEPOT CLEANING SUPPLIES $18.16 1/24/2025 35102 81770 10153404 62008 HOME DEPOT LIGHT BULBS $33.67 1/24/2025 35102 81771 10153411 62009 HOME DEPOT PAINT/GRAFFITI COVER UP $40.87 1/24/2025 35102 81772 10153404 62008 HOME DEPOT TILE ADHESIVE $32.59 1/24/2025 35102 81773 34353415 62008 HOME DEPOT BATTERIES $31.69 $1,815.33 1/24/2025 35102 81807 10123100 62008 HOMEGOODS CC SWEARING-IN CEREMONY GIFT ACCESSORIES $17.38 $17.38 1/24/2025 35102 81811 10111000 62101 HONEST MEDICAL STERILE WATER LIQUID $83.89 1/24/2025 35102 81614 10141600 62008 HONEST MEDICAL STERILE WATER LIQUID $49.27 $133.16 1/24/2025 35102 81614 34341600 62008 HONEY BUCKET PORTABLE RESTROOMS $1,114.45 $1,114.45 1/3/2025 34782 0554581463 10160804 61201 HOSSAIN, RIAD EMRAN BADMINTON CLASS $500.00 1/10/2025 34843 27028 10160832 44063 HOSSAIN, RIAD EMRAN BADMINTON CLASS $775.00 1/10/2025 34843 27029 10160832 44063 HOSSAIN, RIAD EMRAN BADMINTON CLASS $1,175.00 1/10/2025 34843 27030 10160832 44063 HOSSAIN, RIAD EMRAN BADMINTON CLASS $1,400.00 1/10/2025 34843 27031 10160832 44063 HOSSAIN, RIAD EMRAN BADMINTON CLASS $3,750.00 $7,600.00 1/10/2025 34843 27032 10160832 44063 HUNT & SONS, INC UNLEADED FUEL $1,558.01 1/10/2025 34844 329576 10153701 62020 HUNT & SONS, INC RENEWABLE DIESEL $630.54 1/10/2025 34844 329577 10153701 62020 HUNT & SONS, INC UNLEADED FUEL $3,835.89 1/17/2025 34982 329578 10153701 62020 HUNT & SONS, INC UNLEADED FUEL $4,226.34 $10,250.78 1/17/2025 34982 332731 10153701 62020 I PERMIT, LLC PERMIT CANCELLATION REFUND $179.77 $179.77 1/31/2025 35134 MECH-2027-2053 10132200 42041 IFIXIT IPAD BATTERY $122.18 $122.18 1/24/2025 35102 81792 10123300 61101 IHEARTMEDIA 40 NICK CARTER RADIO ADVERTISEMENTS $2,060.00 $2,060.00 1/3/2025 34783 6222056447 10160432 61001 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153408 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $150.00 1/17/2025 34983 90 10153411 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153619 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153614 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153610 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153611 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 10153609 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $75.00 1/17/2025 34983 90 10153607 61104

Page 20 of 40 ends

5.5.a
Packet Pg. 35
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $450.00 1/17/2025 34983 90 10153605 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $150.00 1/17/2025 34983 90 10153603 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $225.00 1/17/2025 34983 90 10153602 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $225.00 1/17/2025 34983 90 10153601 61104 IMPERIAL MAINTENANCE MECHANIC RESTROOM MAINTENANCE 12/24 $220.00 1/17/2025 34983 90 A 10153409 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $225.00 1/17/2025 34983 90 30153503 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $602.00 1/17/2025 34983 90 34353675 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353673 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353672 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353671 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353657 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353656 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353655 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353663 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353662 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353660 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353665 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353666 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $486.00 1/17/2025 34983 90 34353667 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353670 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $225.00 1/17/2025 34983 90 34353668 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 1/17/2025 34983 90 34353651 61104 IMPERIAL MAINTENANCE PARK RESTROOM MAINTENANCE 12/24 $151.00 $6,053.00 1/17/2025 34983 90 34353653 61104 IMPERIAL SPRINKLER IRRIGATION SUPPLIES $500.16 1/17/2025 34984 0018348749-001 34353504 62003 IMPERIAL SPRINKLER IRRIGATION SUPPLIES $3,062.74 1/17/2025 34984 0018632870-001 34353504 62003 IMPERIAL SPRINKLER IRRIGATION SUPPLIES $259.13 1/17/2025 34984 0018845866-002 34353504 62003 IMPERIAL SPRINKLER IRRIGATION SUPPLIES $1,106.87 $4,928.90 1/24/2025 35069 0018845866-001 34353504 62003 IMSA RENEWAL/D.FEHR $100.00 $100.00 1/24/2025 35102 81658 10152304 62203 INTERNATIONAL CODE COUNCIL BUILDING PLANS EXAMINER EXAM $240.00 $240.00 1/24/2025 35102 81749 10132100 65001 IRRIGATION ASSOCIATION RENEWAL/G. MANUEL $515.00 1/24/2025 35102 81645 10153100 62203 IRRIGATION ASSOCIATION RENEWAL/M. CALDWELL $75.00 1/24/2025 35102 81687 10153100 65001 IRRIGATION ASSOCIATION RENEWAL/D. WATSON $150.00 $740.00 1/24/2025 35102 81688 10153100 62203 ISLAND KIDS WINTER BREAK CAMPS $300.00 $300.00 1/10/2025 34845 28289 10160604 44058 JAJEH, JANAN DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35156 81479429 10100000 20108 JAM SERVICES INC ROADSIDE UNITs ADS PROJECT CIP 975594 $23,381.25 $23,381.25 1/17/2025 34985 186362 40100000 67012 JET MULCH MULCH INSTALLATION $10,740.15 $10,740.15 1/10/2025 34846 25888-OL 40100000 67012

Page 21 of 40 ends

5.5.a
Packet Pg. 36
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
JNF BROTHERS INC PREV MAINT/TIRE SERVICE #157 $122.72 1/3/2025 34784 214542 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #320 $90.29 1/3/2025 34784 214592 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE/TRANSMISSION SERVICE #146 $1,283.49 1/3/2025 34784 214612 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #322 $91.06 1/3/2025 34784 214640 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #157 $72.08 1/3/2025 34784 214542 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #320 $53.03 1/3/2025 34784 214592 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE/TRANSMISSION SERVICE #146 $753.79 1/3/2025 34784 214612 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #322 $53.48 1/3/2025 34784 214640 34342500 61111 JNF BROTHERS INC PREV MAINT/BRAKE SERVICE $952.96 1/10/2025 34847 214461 10153703 61101 JNF BROTHERS INC CHECK ENGINE LIGHT/BRAKE/TIRE SERVICE #86 $783.25 1/10/2025 34847 214537 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE SERVICE/INSPECT DRIVER WINDOW #91 $605.09 1/10/2025 34847 214650 10153703 61101 JNF BROTHERS INC PREV MAINT/WIPER INSTALLATION #83 $158.32 1/10/2025 34847 214749 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE/COOLING SYSTEM SERVICE #E2 $1,017.31 1/10/2025 34847 214810 10153703 61101 JNF BROTHERS INC BRAKE INSPECTION #87 $65.00 1/10/2025 34847 214859 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE SERVICE/CABIN AIR FILTER #12 $1,933.69 1/10/2025 34847 214885 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE/BRAKE SERVICE #143 $699.21 1/10/2025 34847 214707 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE ROTATION #318 $90.76 1/10/2025 34847 214744 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #135 $507.75 1/10/2025 34847 214767 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE/BRAKE SERVICE #143 $410.65 1/10/2025 34847 214707 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE ROTATION #318 $53.30 1/10/2025 34847 214744 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #135 $298.21 1/10/2025 34847 214767 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE/TRANSMISSION/COOLING SYSTEM #76 $2,293.03 1/17/2025 34986 214782 10153703 61101 JNF BROTHERS INC TIRE SERVICE #5012 $154.61 1/17/2025 34986 215006 10153703 61101 JNF BROTHERS INC TIRE SERVICE #30 $585.93 1/17/2025 34986 215010 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE/TRANSMISSION/COOLING SYSTEM #98 $1,328.28 1/17/2025 34986 215131 10153703 61101 JNF BROTHERS INC TIRE SERVICE #147 $130.24 1/17/2025 34986 213122 10142500 61111 JNF BROTHERS INC TIRE SERVICE #322 $406.34 1/17/2025 34986 214712 10142500 61111 JNF BROTHERS INC CHECK ENGINE LIGHT #303D $153.68 1/17/2025 34986 214788 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #147 $94.78 1/17/2025 34986 214898 10142500 61111 JNF BROTHERS INC PREV MAINT/BRAKE/BATTERY SERVICE #150 $812.46 1/17/2025 34986 214920 10142500 61111 JNF BROTHERS INC PREV MAINT #154 $122.72 1/17/2025 34986 214970 10142500 61111 JNF BROTHERS INC TIRE SERVICE #147 $76.49 1/17/2025 34986 213122 34342500 61111 JNF BROTHERS INC TIRE SERVICE #322 $238.64 1/17/2025 34986 214712 34342500 61111 JNF BROTHERS INC CHECK ENGINE LIGHT #303D $90.26 1/17/2025 34986 214788 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #147 $55.66 1/17/2025 34986 214898 34342500 61111 JNF BROTHERS INC PREV MAINT/BRAKE/BATTERY SERVICE #150 $477.16 1/17/2025 34986 214920 34342500 61111 JNF BROTHERS INC PREV MAINT #154 $72.08 1/17/2025 34986 214970 34342500 61111 JNF BROTHERS INC FUSE RELOCATION KIT INSTALLMENT #93 $289.79 1/24/2025 35071 215225 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE SERVICE/PLATE BRACKET #22 $205.15 1/24/2025 35071 215346 10153703 61101 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #152 $122.72 1/24/2025 35071 215055 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #155 $122.72 1/24/2025 35071 215080 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #132 $122.72 1/24/2025 35071 215114 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #134 $94.78 1/24/2025 35071 215137 10142500 61111 JNF BROTHERS INC BATTERY REPLACEMENT #K95 $200.74 1/24/2025 35071 215178 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #152 $72.08 1/24/2025 35071 215055 34342500 61111

Page 22 of 40 ends

5.5.a
Packet Pg. 37
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
JNF BROTHERS INC PREV MAINT/TIRE SERVICE #155 $72.08 1/24/2025 35071 215080 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #132 $72.08 1/24/2025 35071 215114 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE #134 $55.66 1/24/2025 35071 215137 34342500 61111 JNF BROTHERS INC BATTERY REPLACEMENT #K95 $117.89 1/24/2025 35071 215178 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE/COOLING SYSTEM SERVICE #15 $509.41 1/31/2025 35127 215197 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE/ELECTRICAL SYSTEM #142 $492.67 1/31/2025 35127 215221 10142500 61111 JNF BROTHERS INC TIRE SERVICE #134 $412.97 1/31/2025 35127 215234 10142500 61111 JNF BROTHERS INC PREV MAINT #159 $122.72 1/31/2025 35127 215292 10142500 61111 JNF BROTHERS INC PREV MAINT/TIRE/COOLING SYSTEM SERVICE #15 $299.17 1/31/2025 35127 215197 34342500 61111 JNF BROTHERS INC PREV MAINT/TIRE SERVICE/ELECTRICAL SYSTEM #142 $289.34 1/31/2025 35127 215221 34342500 61111 JNF BROTHERS INC TIRE SERVICE #134 $242.54 1/31/2025 35127 215234 34342500 61111 JNF BROTHERS INC PREV MAINT #159 $72.08 $21,177.11 1/31/2025 35127 215292 34342500 61111 KANG, TOMMY MILEAGE REIMBURSEMENT $35.85 1/17/2025 34987 REIMB 11/1-11/27 10160106 65004 KANG, TOMMY MILEAGE REIMBURSEMENT $42.61 $78.46 1/17/2025 34987 REIMB 12/2-12/26 10160106 65004 KEENAN, MICHELLE PRESCHOOL CLASSES $11,504.09 $11,504.09 1/17/2025 34988 23019-23020 OCT-JAN 10160603 44058 KEFFER, PEG ACTIVITY REFUND $120.00 $120.00 1/31/2025 35158 81330002 10100000 20108 KEYES, ALISHA VP SUBSIDY SR 263 $184.23 $184.23 1/10/2025 34849 1069 34751603 61001 KIDCHECK TOUCHLESS CHECK IN SOFTWARE $199.00 $199.00 1/24/2025 35102 81744 10160635 62016 KID'S COUNTRY RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34881 80736577 10100000 20108 KIM, MOON VISUAL ARTS CLASSES $858.00 $858.00 1/3/2025 34785 27247-27254 10160408 44055 KOEHNE, TERRY COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34786 JAN 2025 10160101 61001 KOTTUR, RANJANA ACTIVITY REFUND $7.00 $7.00 1/31/2025 35159 81377717 10100000 20108 KRISHNA, PURNIMA DEPOSIT RENTAL REFUND $500.00 $500.00 1/31/2025 35160 81479421 10100000 20108 KULSHRESTHA, NEETU VANPOOL DRIVER BONUS $166.67 $166.67 1/24/2025 35081 011425-6 34751603 61001 KUMON DEPOSIT RENTAL REFUND $500.00 $500.00 1/31/2025 35161 81479371 10100000 20108 KUZNIK, JEAN COMMISSIONER STIPEND $250.00 $250.00 1/3/2025 34787 JAN 2025 10131100 61012 LAFAYETTE CHAMBER OF COMMERCE RENEWAL/C.WEEKS $175.10 $175.10 1/24/2025 35102 81711 34751600 62203 LEAGUE OF CA CITIES REGISTRATION/S.KOLL $675.00 $675.00 1/24/2025 35102 81732 10112100 65001 LEVERS, CAROLYNNE MARIE SENIOR FITNESS CLASSES $88.00 1/17/2025 34989 27133 10160706 44059

Page 23 of 40 ends

5.5.a
Packet Pg. 38
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
LEVERS, CAROLYNNE MARIE SENIOR FITNESS CLASSES $90.00 $178.00 1/17/2025 34989 27108 12/24 10160706 61006 LEVY, KYLE COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34788 JAN 2025 10160101 61001 LI, XINXIN ACTIVITY REFUND $249.00 $249.00 1/31/2025 35162 81452872 10100000 20108 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 11/24 $1,215.00 1/10/2025 34848 282958 61000000 61001 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 11/24 $37.50 1/10/2025 34848 282959 61000000 61001 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 11/24 $177.50 1/10/2025 34848 282960 61000000 61001 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 11/24 $2,164.50 1/10/2025 34848 282961 61000000 61001 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 11/24 $773.00 1/10/2025 34848 282962 61000000 61001 LIEBERT, CASSIDY WHITMORE PREMIUM LIEBERT LIBRARY SUBSCRIPTION 1/1-12/31/25 $900.00 1/17/2025 34990 284043 10122300 65001 LIEBERT, CASSIDY WHITMORE LEGAL SERVICE 12/24 $6,867.00 $12,134.50 1/31/2025 35128 284411 61000000 61001 LINCOLN AQUATICS POOL CHEMICALS $1,197.11 1/17/2025 34991 NU264657 10153302 62022 LINCOLN AQUATICS POOL CHEMICALS $1,197.11 1/17/2025 34991 NU264657 34353301 62022 LINCOLN AQUATICS POOL CHEMICALS $1,197.13 1/17/2025 34991 NU264657 34353306 62022 LINCOLN AQUATICS POOL CHEMICALS $982.33 1/24/2025 35072 NU265214 10153302 62022 LINCOLN AQUATICS POOL CHEMICALS $982.33 1/24/2025 35072 NU265214 34353301 62022 LINCOLN AQUATICS POOL CHEMICALS $982.33 1/31/2025 35129 NU265678 10153302 62022 LINCOLN AQUATICS POOL CHEMICALS $982.33 $7,520.67 1/31/2025 35129 NU265678 34353301 62022 LIVERMORE-PLEASANTON UMPIRES ADULT SPORTS COED/MEN'S UMPIRES $2,433.00 $2,433.00 1/31/2025 35130 276 10160805 61001 LOGIKCULL PUBLIC RECORDS REQUEST CULLING $395.00 $395.00 1/24/2025 35102 81631 10114100 61001 LOOMIS ARMORED TRUCK SERVICE $1,636.60 $1,636.60 1/17/2025 34992 13643369 10100000 46001 LOPEZ-LUCEY, CAROL COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34789 JAN 2025 10160101 61001 LOTT, TARLISE RENTAL DEPOSIT REFUND $100.00 1/10/2025 34882 80536637 10100000 20108 LOTT, TARLISE RENTAL DEPOSIT REFUND $1,000.00 $1,100.00 1/10/2025 34883 80536655 10100000 20108 LOW PRICE AUTO GLASS TINT INSTALLATION #320 $129.15 1/24/2025 35073 I077676 10142500 61111 LOW PRICE AUTO GLASS TINT INSTALLATION #316 $299.25 1/24/2025 35073 I077692 10142500 61111 LOW PRICE AUTO GLASS TINT INSTALLATION #320 $75.85 1/24/2025 35073 I077676 34342500 61111 LOW PRICE AUTO GLASS TINT INSTALLATION #316 $175.75 1/24/2025 35073 I077692 34342500 61111 LOW PRICE AUTO GLASS TINT INSTALLATION #417 $463.05 1/31/2025 35131 I077782 10142500 61111 LOW PRICE AUTO GLASS TINT INSTALLATION #417 $271.95 $1,415.00 1/31/2025 35131 I077782 34342500 61111 LSA ASSOCIATES, INC TASK 9-CROW CANYON/IRON HORSE TRAIL OVERCROSSING $18,766.37 $18,766.37 1/31/2025 35132 196428 40100000 67012 MARKETPLACE AT SAN RAMON COMMON AREAS INSURANCE FEE $6,204.53 $6,204.53 1/24/2025 35074 725-725052 1/25 10153404 61007 MARSHALLS CC SWEARING-IN CEREMONY GIFT ACCESSORIES $44.53 $44.53 1/24/2025 35102 81812 10111000 62101

Page 24 of 40 ends

5.5.a
Packet Pg. 39
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
MASTERCLASS MASTERCLASS MEMBERSHIP RENEWAL 24/25 $240.00 $240.00 1/24/2025 35102 81654 10153100 65001 MAZE & ASSOCIATES ANNUAL FINANCIAL REPORT AND MANAGEMENT LETTER $16,245.00 $16,245.00 1/24/2025 35075 53792 10121100 61002 MCGUIRE HARLEY-DAVID AIR FILTER CLEANER $23.95 1/24/2025 35102 81651 10142200 62019 MCGUIRE HARLEY-DAVID AIR FILTER CLEANER $14.06 $38.01 1/24/2025 35102 81651 34342200 62019 MCKIM CORPORATION RETENTION RELEASE CIP 000013/000015 $99,499.97 $99,499.97 1/17/2025 34993 FINAL 40100000 20105 MCNEVIN CLEANING SPECIALIST CARPET CLEANING 1/17/25 $3,204.00 1/24/2025 35076 68341 10153401 61113 MCNEVIN CLEANING SPECIALIST CARPET CLEANING 1/17/25 $920.00 $4,124.00 1/24/2025 35076 68342 10153408 61113 MENDES, ANDREW MILEAGE REIMBURSEMENT $22.65 1/31/2025 35133 REIMB 12/3-12/20 10160105 65001 MENDES, ANDREW MILEAGE REIMBURSEMENT $4.69 1/31/2025 35133 REIMB 12/3-12/20 10160600 65004 MENDES, ANDREW MILEAGE REIMBURSEMENT $2.41 1/31/2025 35133 REIMB 12/3-12/20 10160630 65004 MENDES, ANDREW MILEAGE REIMBURSEMENT $15.48 $45.23 1/31/2025 35133 REIMB 12/3-12/20 10160830 65004 MIMI'S CHOCOLATES PAINT & SIP EVENT HOT CHOCOLATE $154.00 1/24/2025 35102 81660 10122500 62101 MIMI'S CHOCOLATES ANNUAL HOLIDAY PARTY FOOD/REFRESHMENTS $1,024.00 $1,178.00 1/24/2025 35102 81825 10122300 65101 MIRACLE PLAYSYSTEMS, INC RAMONA PARK PLAYGROUND UPGRADE CIP 955423 $241,566.20 1/17/2025 34994 F2024-1002 40100000 67012 MIRACLE PLAYSYSTEMS, INC RAMONA PARK PLAYGROUND UPGRADE CIP 955423 $3,693.25 $245,259.45 1/24/2025 35077 F2024-1008 40100000 67012 MISSION INN HOTEL LODGING/M.GUNNING $181.14 1/24/2025 35102 81779 10141500 65001 MISSION INN HOTEL LODGING/M.GUNNING $106.38 $287.52 1/24/2025 35102 81779 34341500 65001 MITRA, PARTHA COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34791 JAN 2025 10160101 61001 MOBILE MODULAR MGMT RESTROOM RENTAL 12/31-1/29 $1,355.09 1/10/2025 34850 2660640 34353415 61201 MOBILE MODULAR MGMT CCG PORTABLE RESTROOM $7,201.91 1/31/2025 35138 2627960 10160307 61201 MOBILE MODULAR MGMT RESTROOM RENTAL 12/1-12/30 $1,355.09 $9,912.09 1/31/2025 35138 2648813 34353415 61201 MONUMENT CAR PARTS BATTERY $219.39 1/10/2025 34851 741288 10153703 62008 MONUMENT CAR PARTS BACK UP ALARM $46.73 1/10/2025 34851 741289 10153703 62008 MONUMENT CAR PARTS SEAT VALANCE $126.53 1/10/2025 34851 741364 10153703 62008 MONUMENT CAR PARTS BATTERY $193.04 1/17/2025 34998 742527 10153703 62008 MONUMENT CAR PARTS AB VALANCE $115.28 1/17/2025 34998 742810 10153703 62008 MONUMENT CAR PARTS BATTERY $88.89 1/17/2025 34998 743074 10153703 62008 MONUMENT CAR PARTS BATTERY $88.89 1/17/2025 34998 743455 10153703 62008 MONUMENT CAR PARTS FUEL CAP $17.22 1/17/2025 34998 743488 10153703 62008 MONUMENT CAR PARTS FLASHER/RELAY $25.92 1/24/2025 35085 743702 10153703 62008 MONUMENT CAR PARTS MOLY-GRAPH CART $156.21 $1,078.10 1/31/2025 35139 744479 10153703 62008 MORGAN'S MASONRY SUPPLY, INC SAND $118.54 $118.54 1/31/2025 35140 11-078099 34553901 62008

Page 25 of 40 ends

5.5.a
Packet Pg. 40
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
MULA, KATHYAYAN RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34884 80536760 10100000 20108 MUNICIPAL RESOURCE GROUP GENERAL GOVERNMENT CONSULTANT SERVICES $2,385.00 1/3/2025 34792 241572 10112100 61005 MUNICIPAL RESOURCE GROUP HR ON-DEMAND CONSULTANT SERVICES $1,560.00 $3,945.00 1/24/2025 35086 241640 10122300 61005 MUTHUSAMY, KANDASAMY RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34885 80536772 10100000 20108 NAINA RAJARAM SHASTR DANCE CLASSES $187.47 $187.47 1/10/2025 34852 27331-27332 10160436 44060 NAMAHA FOUNDATION FOR THE ARTS THEATER DEPOSIT REFUND $1,461.54 1/10/2025 34886 80590484 10100000 20108 NAMAHA FOUNDATION FOR THE ARTS THEATER DEPOSIT REFUND $200.00 $1,661.54 1/10/2025 34887 80590510 10100000 20108 NATEC INTERNATIONAL FALL PROTECTION COMPETENT PERSON TRAINING $1,495.00 $1,495.00 1/10/2025 34853 217584 10153100 65001 NETWORK INNOVATIONS US INC SATELLITE PHONE SERVICE 12/24 $238.91 1/24/2025 35087 24122908521 10142400 61301 NETWORK INNOVATIONS US INC SATELLITE PHONE SERVICE 12/24 $140.32 $379.23 1/24/2025 35087 24122908521 34342400 61301 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $106.00 1/17/2025 34999 149358 10153618 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $2,209.00 1/17/2025 34999 149358 10153621 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $220.00 1/17/2025 34999 149358 10153617 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $304.00 1/17/2025 34999 149358 10153616 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $621.00 1/17/2025 34999 149358 10153619 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $748.00 1/17/2025 34999 149358 10153614 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $209.00 1/17/2025 34999 149358 10153613 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $547.00 1/17/2025 34999 149358 10153612 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $103.00 1/17/2025 34999 149358 10153604 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $153.00 1/17/2025 34999 149358 10153610 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $297.00 1/17/2025 34999 149358 10153611 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $473.00 1/17/2025 34999 149358 10153608 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $262.00 1/17/2025 34999 149358 10153609 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $94.00 1/17/2025 34999 149358 10153606 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $372.00 1/17/2025 34999 149358 10153607 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $3,762.00 1/17/2025 34999 149358 10153605 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $373.00 1/17/2025 34999 149358 10153603 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $825.00 1/17/2025 34999 149358 10153602 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,063.00 1/17/2025 34999 149358 10153601 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $755.00 1/17/2025 34999 149360 10153705 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,019.00 1/17/2025 34999 149360 10153402 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $947.00 1/17/2025 34999 149360 10153401 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,833.00 1/17/2025 34999 149360 10153411 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $4,765.00 1/17/2025 34999 149362 33053520 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $533.00 1/17/2025 34999 149358 34353676 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $248.00 1/17/2025 34999 149358 34353674 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,231.00 1/17/2025 34999 149358 34353673 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $121.00 1/17/2025 34999 149358 34353672 61106

Page 26 of 40 ends

5.5.a
Packet Pg. 41
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $284.00 1/17/2025 34999 149358 34353671 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $193.00 1/17/2025 34999 149358 34353658 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $182.00 1/17/2025 34999 149358 34353654 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $510.00 1/17/2025 34999 149358 34353657 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $522.00 1/17/2025 34999 149358 34353656 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,166.00 1/17/2025 34999 149358 34353655 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $815.00 1/17/2025 34999 149358 34353663 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $278.00 1/17/2025 34999 149358 34353662 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $251.00 1/17/2025 34999 149358 34353659 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $320.00 1/17/2025 34999 149358 34353660 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $377.00 1/17/2025 34999 149358 34353664 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $121.00 1/17/2025 34999 149358 34353661 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $675.00 1/17/2025 34999 149358 34353665 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $730.00 1/17/2025 34999 149358 34353666 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $357.00 1/17/2025 34999 149358 34353670 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $272.00 1/17/2025 34999 149358 34353669 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,068.00 1/17/2025 34999 149358 34353668 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $1,541.00 1/17/2025 34999 149358 34353613 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $326.00 1/17/2025 34999 149358 34353651 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $867.00 1/17/2025 34999 149358 34353652 61106 NEW IMAGE LANDSCAPE LANDSCAPE MAINTENANCE 12/24 $414.00 $35,462.00 1/17/2025 34999 149358 34353653 61106 NORCAL DIESEL SOLUTIONS DIESEL VEHICLE SMOKE TESTING $545.00 $545.00 1/17/2025 35000 318 10153703 61101 NORTHSTAR CHEMICAL POOL CHEMICALS $911.34 1/10/2025 34854 299548 10153302 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $1,301.92 1/10/2025 34854 299549 34353301 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $911.34 1/24/2025 35088 300865 10153302 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $779.24 1/24/2025 35088 301960 10153302 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $1,171.73 1/24/2025 35088 300864 34353301 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $1,171.73 1/24/2025 35088 301959 34353301 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $3,071.19 1/31/2025 35141 302187 10153302 62022 NORTHSTAR CHEMICAL POOL CHEMICALS $1,823.52 $11,142.01 1/31/2025 35141 302188 34353301 62022 ODP BUSINESS SOLUTIONS LLC MARKERS/CALCULATOR/POST-ITS/TAPE/PAPER $96.60 1/10/2025 34855 403150520001 10160635 62016 ODP BUSINESS SOLUTIONS LLC PAPER/DUSTER/WIPES/WRISTREST/TAPE/NOTES $134.65 1/10/2025 34855 390154762001 10160100 62101 ODP BUSINESS SOLUTIONS LLC CALENDAR/TAPE CORRECTION $5.77 1/10/2025 34855 400512203001 10152100 62101 ODP BUSINESS SOLUTIONS LLC CALENDAR/TAPE CORRECTION $23.08 1/10/2025 34855 400512203001 10152200 62101 ODP BUSINESS SOLUTIONS LLC RUBBERBANDS/PAD/BINS/HANGING FOLDERS $107.46 1/10/2025 34855 401138914001 10131100 62101 ODP BUSINESS SOLUTIONS LLC POWER STRIP $11.96 1/10/2025 34855 403429029001 10152100 62101 ODP BUSINESS SOLUTIONS LLC SURGE PRO EXT CORD $43.49 1/10/2025 34855 403438004001 10152100 62101 ODP BUSINESS SOLUTIONS LLC MARKERS/CALCULATOR $45.21 1/10/2025 34855 404130457001 10122100 62101 ODP BUSINESS SOLUTIONS LLC MARKERS/TAPE/NOTEPADS $96.16 1/10/2025 34855 404167817001 10152100 62101 ODP BUSINESS SOLUTIONS LLC BINDER/PENS/POST IT/NOTES/PADS $48.01 1/17/2025 35001 400361325001 10141100 62101 ODP BUSINESS SOLUTIONS LLC DETERGENT $25.47 1/17/2025 35001 400426444001 10141100 62101 ODP BUSINESS SOLUTIONS LLC FLASH DRIVES $190.12 1/17/2025 35001 400514600001 10141100 62101

Page 27 of 40 ends

5.5.a
Packet Pg. 42
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
ODP BUSINESS SOLUTIONS LLC PAPER/DESK PAD/DIVIDERS/WHITE BOARD CLEANER/PENS $160.81 1/17/2025 35001 404593104001 10160100 62101 ODP BUSINESS SOLUTIONS LLC CALENDAR $43.27 1/17/2025 35001 404596844001 10160100 62101 ODP BUSINESS SOLUTIONS LLC BINDER/PENS/POST IT/NOTES/PADS $28.19 1/17/2025 35001 400361325001 34341100 62101 ODP BUSINESS SOLUTIONS LLC DETERGENT $14.96 1/17/2025 35001 400426444001 34341100 62101 ODP BUSINESS SOLUTIONS LLC FLASH DRIVES $111.66 1/17/2025 35001 400514600001 34341100 62101 ODP BUSINESS SOLUTIONS LLC DESKPAD/PENS/PUSH PINS $35.47 1/31/2025 35142 401584887001 10160100 62101 ODP BUSINESS SOLUTIONS LLC PLANNER $47.62 1/31/2025 35142 403590717001 10152200 62101 ODP BUSINESS SOLUTIONS LLC BINDERS/DIVIDER TABS $95.00 1/31/2025 35142 404807717001 10160100 62101 ODP BUSINESS SOLUTIONS LLC PAPER/LABELS/MARKERS $210.03 $1,574.99 1/31/2025 35142 406470669001 10160100 62101 OFFICE OF THE SHERIFF EXTRADITION FEES $305.55 1/17/2025 35002 24-96 10141700 61004 OFFICE OF THE SHERIFF EXTRADITION FEES $179.45 $485.00 1/17/2025 35002 24-96 34341700 61004 OLSON, BRADLEY A MARTIAL ARTS CLASS $315.00 1/10/2025 34856 27076 10160832 44063 OLSON, BRADLEY A MARTIAL ARTS CLASS $495.00 1/10/2025 34856 27077 10160832 44063 OLSON, BRADLEY A MARTIAL ARTS CLASS $555.00 $1,365.00 1/10/2025 34856 27078 10160832 44063 OREILLY AUTO PARTS MOTOR OIL/CAPSULE $93.31 1/10/2025 34857 5908-363380 10142500 62019 OREILLY AUTO PARTS MOTOR OIL/CAPSULE $54.80 1/10/2025 34857 5908-363380 34342500 62019 OREILLY AUTO PARTS MOTORCYCLE CLEANING SUPPLIES $20.46 1/24/2025 35102 81719 10142200 62019 OREILLY AUTO PARTS MOTORCYCLE CLEANING SUPPLIES $12.02 $180.59 1/24/2025 35102 81719 34342200 62019 ORINDA CHAMBER OF COMMERCE RENEWAL/511CC $200.00 $200.00 1/24/2025 35102 81712 34751600 62203 OSELAND, JULIA COMMISSIONER STIPEND $125.00 $125.00 1/3/2025 34793 JAN 2025 10160101 61001 OTIS ELEVATOR COMPANY ELEVATOR MAINTENANCE 2/25 $390.00 1/24/2025 35089 100401819433 10153419 61119 OTIS ELEVATOR COMPANY ELEVATOR MAINTENANCE 2/25 $195.00 1/24/2025 35089 100401819433 10153404 61119 OTIS ELEVATOR COMPANY ELEVATOR MAINTENANCE 2/25 $195.00 1/24/2025 35089 100401819433 10153403 61119 OTIS ELEVATOR COMPANY ELEVATOR MAINTENANCE 2/25 $195.00 1/24/2025 35089 100401819433 10153401 61119 OTIS ELEVATOR COMPANY ELEVATOR MAINTENANCE 2/25 $134.98 $1,109.98 1/24/2025 35089 100401819433 34353413 61119 P&A GROUP COBRA BILLING FEE 12/24 $72.00 1/10/2025 34858 3937555 10122600 61001 P&A GROUP COMMUTE FLEX FEE 1/25 $10.50 1/10/2025 34859 F75045016484 10122600 61001 P&A GROUP FSA FLEX FEE 1/25 $1,060.00 1/10/2025 34859 F75045016485 10122600 61001 P&A GROUP RETIREE BILLING FEE 12/24 $27.00 $1,169.50 1/17/2025 35003 3938544 10122600 61001 PACE SUPPLY RUBBER REPAIR KIT $527.70 $527.70 1/10/2025 34860 1410084252 34353301 62008 PAPA RENEWAL/D. WATSON $50.00 $50.00 1/24/2025 35102 81689 10153100 62203 PARS PARS ARS ADMIN FEE 9/24 $1,101.47 1/24/2025 35090 56713 10122600 61001 PARS PARS ARS ADMIN FEE 10/24 $1,106.57 1/24/2025 35090 56927 10122600 61001 PARS PARS ARS ADMIN FEE 11/24 $1,116.58 $3,324.62 1/24/2025 35090 57129 10122600 61001

Page 28 of 40 ends

5.5.a
Packet Pg. 43
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
PATEL, DARSHAK VANPOOL DRIVER BONUS $166.65 $166.65 1/24/2025 35082 011425-1 34751603 61001 PAYLADO, WARREN VISUAL ARTS CLASSES $2,275.56 $2,275.56 1/10/2025 34861 27222-27250 10160408 44055 PERIYANAN, VISWANATH DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35163 81479489 10100000 20108 PG & E GAS & ELECTRIC 11/20-12/20 $611.27 1/10/2025 34910 1055345242-5 12/24 10153411 61304 PG & E GAS & ELECTRIC 11/8-12/9 $449.80 1/10/2025 34910 1522605446-6 11/24 10153411 61304 PG & E GAS & ELECTRIC 11/8-12/9 $6,134.51 1/10/2025 34910 1522605446-6 11/24 10153408 61304 PG & E GAS & ELECTRIC 11/8-12/9 $250.95 1/10/2025 34910 1522605446-6 11/24 10153405 61304 PG & E GAS & ELECTRIC 11/8-12/9 $12,336.02 1/10/2025 34910 1522605446-6 11/24 10153403 61304 PG & E GAS & ELECTRIC 11/8-12/9 $7,258.09 1/10/2025 34910 1522605446-6 11/24 10153404 61304 PG & E GAS & ELECTRIC 11/8-12/9 $46,155.05 1/10/2025 34910 1522605446-6 11/24 10153402 61304 PG & E GAS & ELECTRIC 11/8-12/9 $13,629.65 1/10/2025 34910 1522605446-6 11/24 10153401 61304 PG & E GAS & ELECTRIC 11/8-12/9 $32,766.07 1/10/2025 34910 1522605446-6 11/24 10153302 61304 PG & E GAS & ELECTRIC 11/8-12/9 $5,042.98 1/10/2025 34910 1522605446-6 11/24 10153701 61304 PG & E GAS & ELECTRIC 11/22-12/23 $10.91 1/10/2025 34910 1688948633-4 12/24 10153603 61304 PG & E GAS & ELECTRIC 11/22-12/23 $10.51 1/10/2025 34910 1688948633-4 12/24 10153606 61304 PG & E GAS & ELECTRIC 11/22-12/23 $1,634.75 1/10/2025 34910 1688948633-4 12/24 10153605 61304 PG & E GAS & ELECTRIC 11/22-12/23 $25.49 1/10/2025 34910 1688948633-4 12/24 10153608 61304 PG & E GAS & ELECTRIC 11/22-12/23 $37.37 1/10/2025 34910 1688948633-4 12/24 10153611 61304 PG & E GAS & ELECTRIC 11/22-12/23 $150.32 1/10/2025 34910 1688948633-4 12/24 10153601 61304 PG & E GAS & ELECTRIC 11/22-12/23 $699.07 1/10/2025 34910 1688948633-4 12/24 10153602 61304 PG & E GAS & ELECTRIC 11/22-12/23 $71.92 1/10/2025 34910 1688948633-4 12/24 10153614 61304 PG & E GAS & ELECTRIC 11/22-12/23 $27.42 1/10/2025 34910 1688948633-4 12/24 10153615 61304 PG & E GAS & ELECTRIC 11/22-12/23 $10.51 1/10/2025 34910 1688948633-4 12/24 10153618 61304 PG & E GAS & ELECTRIC 11/22-12/23 $35.13 1/10/2025 34910 1688948633-4 12/24 10153619 61304 PG & E GAS & ELECTRIC 11/20-12/20 $39.85 1/10/2025 34910 4719232246-0 12/24 10153411 61304 PG & E GAS & ELECTRIC 11/20-12/20 $319.73 1/10/2025 34910 8146634615-2 12/24 10153411 61304 PG & E GAS & ELECTRIC 10/25-11/22 $8,324.24 1/10/2025 34910 9783017412-0 11/24 10153809 61304 PG & E GAS & ELECTRIC 8/31-12/2 $39,224.30 1/10/2025 34910 3399329961-0* 30253807 61304 PG & E GAS & ELECTRIC 11/8-12/9 $368.34 1/10/2025 34910 1522605446-6 11/24 30353510 61304 PG & E GAS & ELECTRIC 11/8-12/9 $2,243.24 1/10/2025 34910 1522605446-6 11/24 30653510 61304 PG & E GAS & ELECTRIC 11/21-12/22 $428.56 1/10/2025 34910 0230348246-3 12/24 34353306 61304 PG & E GAS & ELECTRIC 11/21-12/22 $8,390.40 1/10/2025 34910 0230348246-3 12/24 34353305 61304 PG & E GAS & ELECTRIC 11/21-12/22 $37.01 1/10/2025 34910 0230348246-3 12/24 34353673 61304 PG & E GAS & ELECTRIC 11/21-12/22 $34.77 1/10/2025 34910 0230348246-3 12/24 34353672 61304 PG & E GAS & ELECTRIC 11/21-12/22 $28.85 1/10/2025 34910 0230348246-3 12/24 34353671 61304 PG & E GAS & ELECTRIC 11/21-12/22 $134.30 1/10/2025 34910 0230348246-3 12/24 34353670 61304 PG & E GAS & ELECTRIC 11/21-12/22 $4,532.36 1/10/2025 34910 0230348246-3 12/24 34353668 61304 PG & E GAS & ELECTRIC 11/21-12/22 $10.51 1/10/2025 34910 0230348246-3 12/24 34353669 61304 PG & E GAS & ELECTRIC 11/21-12/22 $5,415.41 1/10/2025 34910 0230348246-3 12/24 34353667 61304 PG & E GAS & ELECTRIC 11/21-12/22 $50.35 1/10/2025 34910 0230348246-3 12/24 34353666 61304 PG & E GAS & ELECTRIC 11/21-12/22 $31.69 1/10/2025 34910 0230348246-3 12/24 34353665 61304 PG & E GAS & ELECTRIC 11/21-12/22 $139.16 1/10/2025 34910 0230348246-3 12/24 34353661 61304

Page 29 of 40 ends

5.5.a
Packet Pg. 44
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
PG & E GAS & ELECTRIC 11/21-12/22 $266.15 1/10/2025 34910 0230348246-3 12/24 34353664 61304 PG & E GAS & ELECTRIC 11/21-12/22 $32.88 1/10/2025 34910 0230348246-3 12/24 34353660 61304 PG & E GAS & ELECTRIC 11/21-12/22 $10.51 1/10/2025 34910 0230348246-3 12/24 34353659 61304 PG & E GAS & ELECTRIC 11/21-12/22 $50.49 1/10/2025 34910 0230348246-3 12/24 34353662 61304 PG & E GAS & ELECTRIC 11/21-12/22 $35.51 1/10/2025 34910 0230348246-3 12/24 34353663 61304 PG & E GAS & ELECTRIC 11/21-12/22 $42.54 1/10/2025 34910 0230348246-3 12/24 34353655 61304 PG & E GAS & ELECTRIC 11/21-12/22 $30.80 1/10/2025 34910 0230348246-3 12/24 34353656 61304 PG & E GAS & ELECTRIC 11/21-12/22 $47.03 1/10/2025 34910 0230348246-3 12/24 34353657 61304 PG & E GAS & ELECTRIC 11/21-12/22 $12.95 1/10/2025 34910 0230348246-3 12/24 34353654 61304 PG & E GAS & ELECTRIC 11/21-12/22 $34.98 1/10/2025 34910 0230348246-3 12/24 34353658 61304 PG & E GAS & ELECTRIC 11/21-12/22 $1,559.15 1/10/2025 34910 0230348246-3 12/24 34353504 61304 PG & E GAS & ELECTRIC 11/21-12/22 $19.03 1/10/2025 34910 0230348246-3 12/24 34353649 61304 PG & E GAS & ELECTRIC 11/21-12/22 $115.83 1/10/2025 34910 0230348246-3 12/24 34353652 61304 PG & E GAS & ELECTRIC 11/21-12/22 $41.34 1/10/2025 34910 0230348246-3 12/24 34353653 61304 PG & E GAS & ELECTRIC 11/21-12/22 $45.13 1/10/2025 34910 0230348246-3 12/24 34353651 61304 PG & E GAS & ELECTRIC 11/21-12/22 $73.21 1/10/2025 34910 0230348246-3 12/24 34353613 61304 PG & E GAS & ELECTRIC 11/8-12/9 $2,930.64 1/10/2025 34910 1522605446-6 11/24 34353415 61304 PG & E GAS & ELECTRIC 11/8-12/9 $2,570.40 1/10/2025 34910 1522605446-6 11/24 34353413 61304 PG & E GAS & ELECTRIC 11/8-12/9 $3,440.53 1/10/2025 34910 1522605446-6 11/24 34353414 61304 PG & E GAS & ELECTRIC 11/8-12/9 $9,573.74 1/10/2025 34910 1522605446-6 11/24 34353412 61304 PG & E GAS & ELECTRIC 11/14-12/13 $24,315.68 1/10/2025 34910 3982663257-0 11/24 34353807 61304 PG & E GAS & ELECTRIC 10/29-11/26 $5,766.59 1/10/2025 34910 6975913590-3 11/24 34353809 61304 PG & E GAS & ELECTRIC 11/21-12/22 $115.21 1/10/2025 34910 0230348246-3 12/24 36152400 61304 PG & E GAS & ELECTRIC 12/2-12/30 $23.82 1/17/2025 35004 6970519678-5 12/24 10153605 61304 PG & E GAS & ELECTRIC 11/26-12/26 $381.15 1/17/2025 35004 7878085578-5 12/24 10153809 61304 PG & E GAS & ELECTRIC 12/2-12/30 $774.08 1/17/2025 35004 6970519678-5 12/24 30153503 61304 PG & E GAS & ELECTRIC 12/2-12/30 $667.12 1/17/2025 35004 6970519678-5 12/24 30153501 61304 PG & E GAS & ELECTRIC 12/3-12/31 $48,865.19 1/17/2025 35004 3399329961-0 12/24 30253807 61304 PG & E GAS & ELECTRIC 12/2-12/30 $544.67 1/17/2025 35004 6970519678-5 12/24 30353510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $7.57 1/17/2025 35004 6970519678-5 12/24 30553510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $143.78 1/17/2025 35004 6970519678-5 12/24 30553520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $175.54 1/17/2025 35004 6970519678-5 12/24 30653308 61304 PG & E GAS & ELECTRIC 12/2-12/30 $75.22 1/17/2025 35004 6970519678-5 12/24 30653520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $46.85 1/17/2025 35004 6970519678-5 12/24 30753520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $141.24 1/17/2025 35004 6970519678-5 12/24 30753510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $33.93 1/17/2025 35004 6970519678-5 12/24 30853510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $218.78 1/17/2025 35004 6970519678-5 12/24 30953510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $26.05 1/17/2025 35004 6970519678-5 12/24 31053520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $15.95 1/17/2025 35004 6970519678-5 12/24 31153510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $9.53 1/17/2025 35004 6970519678-5 12/24 31553520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $9.55 1/17/2025 35004 6970519678-5 12/24 31753510 61304 PG & E GAS & ELECTRIC 12/2-12/30 $10.97 1/17/2025 35004 6970519678-5 12/24 31853520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $167.51 1/17/2025 35004 6970519678-5 12/24 31953520 61304 PG & E GAS & ELECTRIC 12/2-12/30 $41.32 1/17/2025 35004 6970519678-5 12/24 33053520 61304 PG & E GAS & ELECTRIC 12/9-1/8 $440.36 1/31/2025 35174 0770575119-1 12/24 10153809 61304

Page 30 of 40 ends

5.5.a
Packet Pg. 45
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
PG & E GAS & ELECTRIC 11/23-12/24 $8,889.85 $309,941.21 1/31/2025 35174 9783017412-0 12/24 10153809 61304 PITA, DOLORES MILEAGE REIMBURSEMENT $206.29 $206.29 1/31/2025 35175 REIMB 7/24-11/21 34612400 65004 PITNEY BOWES GLOBAL FINANCIAL DEPARTMENT POSTAGE $2,957.99 $2,957.99 1/31/2025 35176 3107009495 10131000 61201 PITNEY BOWES, INC DEPARTMENT POSTAGE $114.44 1/10/2025 34911 DECEMBER 2024 10141100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $2.31 1/10/2025 34911 DECEMBER 2024 10153100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $3.15 1/10/2025 34911 DECEMBER 2024 10152100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $342.04 1/10/2025 34911 DECEMBER 2024 10121100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $791.02 1/10/2025 34911 DECEMBER 2024 10131100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $115.51 1/10/2025 34911 DECEMBER 2024 10132100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $456.97 1/10/2025 34911 DECEMBER 2024 10160106 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $2.76 1/10/2025 34911 DECEMBER 2024 10114100 62103 PITNEY BOWES, INC DEPARTMENT POSTAGE $21.22 $1,849.42 1/10/2025 34911 DECEMBER 2024 10113100 62103 PLANTIFY COURSE SUPPLY FEE $484.00 $484.00 1/17/2025 35005 27104 SF 10160540 44056 PLAY-WELL TEKNOLOGIES LEGO CAMP $280.80 1/17/2025 35006 27971 10160604 44058 PLAY-WELL TEKNOLOGIES LEGO CAMP $343.20 1/17/2025 35006 27972 10160604 44058 PLAY-WELL TEKNOLOGIES LEGO CAMP $187.20 $811.20 1/17/2025 35006 27974 10160604 44058 PRANA VIOLET HEALING DEPOSIT RENTAL REFUND $125.00 $125.00 1/31/2025 35164 81479513 10100000 20108 PRECISION EMPRISE SIDEWALK OFFSET REPAIRS $69,596.80 $69,596.80 1/31/2025 35177 55477 40100000 67012 PROPERTYRADAR.COM PROPERTY RESEARCH SERVICE $79.00 $79.00 1/24/2025 35102 81757 10132300 61001 PULTE GROUP RENTAL DEPOSIT REFUND $1,000.00 $1,000.00 1/10/2025 34888 80736211 10100000 20108 RAO, VINUTHA K. SENIOR FITNESS CLASS $451.50 1/17/2025 35007 27126-29662 10160706 44059 RAO, VINUTHA K. SENIOR FITNESS CLASS $198.00 $649.50 1/17/2025 35007 27128 10160802 44062 REAL ESTATE MARKETING RENTAL DEPOSIT REFUND $500.00 1/10/2025 34889 80736586 10100000 20108 REAL ESTATE MARKETING RENTAL DEPOSIT REFUND $100.00 $600.00 1/10/2025 34890 80736693 10100000 20108 REBORN CABINETS PERMIT REFUND CANCELLED PROJECT $586.40 1/31/2025 35136 BLDR-2024-2638 10132200 42038 REBORN CABINETS PERMIT REFUND CANCELLED PROJECT $0.87 1/31/2025 35136 BLDR-2024-2638 10132100 44038 REBORN CABINETS PERMIT REFUND CANCELLED PROJECT $1.00 1/31/2025 35136 BLDR-2024-2638 10132100 44040 REBORN CABINETS PERMIT REFUND CANCELLED PROJECT $30.14 $618.41 1/31/2025 35136 BLDR-2024-2638 60332100 44028 REBOUND BASKETBALL CHESS CLASS $647.50 1/10/2025 34912 26857 10160604 44058 REBOUND BASKETBALL CHESS CAMP $990.00 $1,637.50 1/17/2025 35008 27979 10160604 44058 RELIASTAR LIFE INSURANCE ADMINISTRATIVE SERVICES ONLY FEES 12/24 $281.20 $281.20 1/10/2025 34913 12A7270239 61000000 65212

Page 31 of 40 ends

5.5.a
Packet Pg. 46
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
RESIDENCE INN LODGING/M.BRACAMONTE $327.07 1/24/2025 35102 81788 10141500 65001 RESIDENCE INN LODGING/M.BRACAMONTE $192.09 $519.16 1/24/2025 35102 81788 34341500 65001 ROBINSON STEEL COMPANY DVAC LOCKER ROOM BENCH LEGS $1,246.00 $1,246.00 1/24/2025 35091 3643-7557 40100000 67012 RON TURLEY ASSOCIATES, INC RTA FLEET MANAGEMENT SOFTWARE 1/25-2/25 $290.00 $290.00 1/17/2025 35009 68496 10153100 61010 ROSEVILLE TERMITE PEST CONTROL SERVICE $44.67 1/10/2025 34914 2336045 10153418 61114 ROSEVILLE TERMITE PEST CONTROL SERVICE $44.66 1/10/2025 34914 2336045 10153419 61114 ROSEVILLE TERMITE PEST CONTROL SERVICE $44.67 1/10/2025 34914 2336045 10153420 61114 ROSEVILLE TERMITE PEST CONTROL SERVICE $82.00 1/10/2025 34914 2336047 10153409 61114 ROSEVILLE TERMITE PEST CONTROL SERVICE $77.00 $293.00 1/10/2025 34914 2341101 34353415 61114 ROSS RECREATION EQUIPMENT INC RANCHO PLAYGROUND RAPLACEMENT PARTS $904.20 1/10/2025 34915 I26687 34353667 62007 ROSS RECREATION EQUIPMENT INC BOB SCHOLL MEMORIAL PLAQUE $231.63 1/31/2025 35178 I26342 10100000 20619 ROSS RECREATION EQUIPMENT INC FABRIQUE MEMORIAL PLAQUE $231.63 1/31/2025 35178 I26636 10100000 20619 ROSS RECREATION EQUIPMENT INC CENTRAL PARK PLAYGROUND SWING CHAIN $752.75 $2,120.21 1/31/2025 35178 I26772 10153605 62007 RUGGERI-JENSEN-AZAR TASK 10-MARKET PLACE FINAL MAP SERVICE $1,288.00 1/3/2025 34794 92584 10152301 61001 RUGGERI-JENSEN-AZAR TASK 10-MARKET PLACE FINAL MAP SERVICE $780.00 1/3/2025 34794 93724 10152301 61001 RUGGERI-JENSEN-AZAR TASK 13-DV MONITORING LOS ANALYSIS $10,580.00 $12,648.00 1/17/2025 35010 94954 10152304 61001 RUNNING AWARDS BAH HUMBUG RUN PARTICIPANTS SHIRTS $4,575.50 $4,575.50 1/24/2025 35102 81622 10160804 62016 RYDETRANS SENIOR TRANSPORTATION $2,301.74 1/17/2025 35011 SR-DEC 2024 (1) 10160705 61001 RYDETRANS SENIOR TRANSPORTATION $205.49 $2,507.23 1/17/2025 35011 SR-DEC 2024 (2) 10160710 61001 S.B.R.P.S.T.C. AGENCY REGISTRATION/T.COOK $324.45 1/24/2025 35102 81775 10141500 65001 S.B.R.P.S.T.C. AGENCY REGISTRATION/T.COOK $190.55 $515.00 1/24/2025 35102 81775 34341500 65001 SAFEWAY STORES, INC COUNCILMEMBER RECOGNITION FLOWERS $54.33 1/24/2025 35102 81697 10114200 62101 SAFEWAY STORES, INC CC SWEARING-IN CEREMONY REFRESHMENTS $10.38 $64.71 1/24/2025 35102 81816 10111000 62101 SAMI AND SONS CONSTRUCTION REFUND BUSINESS LICENSE CANCELLATION $210.06 $210.06 1/17/2025 34997 BL-026344-2025 10131100 42002 SAN MATEO LAWN MOWER CLEAN FUEL SYSTEM/TUNE MOTOR KNOCK $103.09 1/10/2025 34916 244035 10153704 61101 SAN MATEO LAWN MOWER CLEAN OIL PASSAGE/REPLACE PUMP $113.51 1/10/2025 34916 244036 10153704 61101 SAN MATEO LAWN MOWER REPAIR RECOIL/ADJUST BLOWER $43.29 1/10/2025 34916 244037 10153704 61101 SAN MATEO LAWN MOWER SHARPEN CHAIN $36.00 1/10/2025 34916 244043 10153704 61101 SAN MATEO LAWN MOWER CLEAN FUEL SYSTEM/REPLACE CARBURETOR $261.25 1/17/2025 35012 244182 10153704 61101 SAN MATEO LAWN MOWER REPLACE PRIMER/CLEAN INTAKE $133.51 1/17/2025 35012 244183 10153704 61101 SAN MATEO LAWN MOWER SHARPEN CHAIN $6.00 1/17/2025 35012 244184 10153704 61101 SAN MATEO LAWN MOWER REPLACE ROPE AND CONTROL CABLE $202.41 $899.06 1/17/2025 35012 244311 10153704 61101 SAN RAMON LIBRARY FOUNDATION THEATER DEPOSIT REFUND $3,999.75 1/10/2025 34891 80589866 10100000 20108

Page 32 of 40 ends

5.5.a
Packet Pg. 47
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
SAN RAMON LIBRARY FOUNDATION THEATER DEPOSIT REFUND $4,044.05 1/10/2025 34892 80589078 10100000 20108 SAN RAMON LIBRARY FOUNDATION THEATER DEPOSIT REFUND $3,985.75 1/10/2025 34893 80589437 10100000 20108 SAN RAMON LIBRARY FOUNDATION THEATER DEPOSIT REFUND $3,964.75 $15,994.30 1/10/2025 34894 80589662 10100000 20108 SAN RAMON SR CTR FOUNDATION SENIOR FOUNDATION BINGO $2,175.00 1/17/2025 35013 24760 10160706 44059 SAN RAMON SR CTR FOUNDATION SENIOR FOUNDATION BINGO $2,375.00 $4,550.00 1/31/2025 35179 28479 10160706 44059 SAN RAMON VALLEY COMMUNITY RENTAL DEPOSIT REFUND $250.00 $250.00 1/10/2025 34895 80737053 10100000 20108 SAN RAMON VALLEY DANCE ACADEMY THEATER DEPOSIT REFUND $800.00 1/10/2025 34896 80764627 10100000 20108 SAN RAMON VALLEY DANCE ACADEMY THEATER DEPOSIT REFUND $31,701.60 $32,501.60 1/10/2025 34897 80764613 10100000 20108 SAN RAMON VALLEY EDUCATION RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34898 80737122 10100000 20108 SAN RAMON VALLEY ISLAMIC RENTAL DEPOSIT REFUND $250.00 $250.00 1/10/2025 34899 80738159 10100000 20108 SARESHWALA, SADAF DEPOSIT RENTAL REFUND $250.00 $250.00 1/31/2025 35166 81479086 10100000 20108 SAVAGE TRAINING REGISTRATION/Z.REDZIC $188.37 1/24/2025 35102 81784 10141500 65001 SAVAGE TRAINING REGISTRATION/Z.REDZIC $110.63 1/24/2025 35102 81784 34341500 65001 SAVAGE TRAINING REGISTRATION/R.GONZALEZ $188.37 1/24/2025 35102 81785 10141500 65001 SAVAGE TRAINING REGISTRATION/R.GONZALEZ $110.63 $598.00 1/24/2025 35102 81785 34341500 65001 SAVANT SOLUTIONS NETWORK DETECTION RESPONSE CYBER SECURITY 2025 $95,040.35 $95,040.35 1/10/2025 34917 SS-1056 10123100 61010 SCOUT TROOP 888 RENTAL DEPOSIT REFUND $1,000.00 $1,000.00 1/10/2025 34900 80736377 10100000 20108 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $2,489.39 1/24/2025 35092 15923 10100000 20423 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $3,413.74 1/24/2025 35092 15923 61000000 65212 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $8,709.11 1/24/2025 35092 15923 61000000 65213 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $33,013.60 1/24/2025 35093 B0GQJT 61100000 65206 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $14,257.80 1/24/2025 35093 B0GQJT 61100000 65207 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $167.70 1/24/2025 35093 B0GQJT 61100000 65208 SELF-INSURED SERVICE COMPANY INSURANCE SERVICES 1/25 $107.25 $62,158.59 1/24/2025 35093 B0GQJT 61100000 65209 SEQUOIA ECOLOGICAL TASK 4-BIOLOGICAL SERVICE MILL CREEK CULVERT REPAIR $5,710.24 1/17/2025 35014 000002025022 40100000 67012 SEQUOIA ECOLOGICAL BIOLOGICAL CONSULTING $1,897.20 $7,607.44 1/31/2025 35180 000002025023 40100000 67012 SHANBHOG, KIRAN VANPOOL DRIVER BONUS $166.67 $166.67 1/24/2025 35083 011425-2 34751603 61001 SHERWIN-WILLIAMS PAINT $88.17 $88.17 1/24/2025 35094 3919-3 10153400 62012 SHI, LAN ACTIVITY REFUND $100.00 $100.00 1/31/2025 35167 81674895 10100000 20108 SHODHAN, SHASHIN TABLE TENNIS CLASS $450.80 $450.80 1/10/2025 34918 27302 10160832 44063

Page 33 of 40 ends

5.5.a
Packet Pg. 48
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
SHUEN, JOSEPH ACTIVITY REFUND $54.00 $54.00 1/31/2025 35168 81380967 10100000 20108 SIEMENS FIRE SYSTEM MONITORING 7/1-9/30 $504.00 1/10/2025 34919 5331494519 10153405 61112 SIEMENS FIRE SYSTEM MONITORING 1/1-3/31 $1,070.00 1/10/2025 34919 5331748471 10153405 61112 SIEMENS FIRE SYSTEM MONITORING 7/1-9/30 $985.00 1/10/2025 34919 5331494519 34353412 61112 SIEMENS FIRE SYSTEM MONITORING 7/1-9/30 $719.00 1/10/2025 34919 5331494519 34353414 61112 SIEMENS FIRE SYSTEM MONITORING 1/1-3/31 $547.00 1/10/2025 34919 5331748471 34353414 61112 SIEMENS FIRE SYSTEM MONITORING 1/1-3/31 $778.75 $4,603.75 1/10/2025 34919 5331748471 34353412 61112 SITEONE LANDSCAPE SUPPLY, LLC IRRIGATION SUPPLIES $125.07 1/10/2025 34920 148707422-001 10153600 62003 SITEONE LANDSCAPE SUPPLY, LLC IRRIGATION SUPPLIES $806.44 1/17/2025 35015 145402439-002 34353504 62003 SITEONE LANDSCAPE SUPPLY, LLC IRRIGATION SUPPLIES $61.41 1/17/2025 35015 149013528-001 34353504 62003 SITEONE LANDSCAPE SUPPLY, LLC IRRIGATION SUPPLIES $283.45 $1,276.37 1/24/2025 35095 149179626-001 34353504 62003 SMART & FINAL CC SWEARING-IN CEREMONY REFRESHMENTS $85.20 $85.20 1/24/2025 35102 81809 10111000 62101 SMITH, MALCOLM ACTIVITY OVERPAYMENT REFUND $100.00 1/10/2025 34901 80673702 10100000 20108 SMITH, MALCOLM RENTAL DEPOSIT REFUND $100.00 1/10/2025 34902 80733278 10100000 20108 SMITH, MALCOM RENTAL DEPOSIT REFUND $500.00 $700.00 1/10/2025 34903 80733332 10100000 20108 SNAPOLOGY WINTER BREAK CAMPS $175.00 1/10/2025 34921 27964 10160604 44058 SNAPOLOGY WINTER BREAK CAMPS $350.00 1/10/2025 34921 27965 10160604 44058 SNAPOLOGY WINTER BREAK CAMPS $290.00 1/10/2025 34921 27966 10160604 44058 SNAPOLOGY WINTER BREAK CAMPS $295.00 1/10/2025 34921 27967 10160604 44058 SNAPOLOGY WINTER BREAK CAMPS $350.00 $1,460.00 1/17/2025 35016 27968 10160604 44058 SONITROL MONTHLY MONITORING 1/25 $686.00 1/17/2025 35017 382972 10153401 61115 SONITROL MONTHLY MONITORING 2/25 $349.00 1/17/2025 35017 385287 10153403 61115 SONITROL MONTHLY MONITORING 2/25 $393.00 1/17/2025 35017 385288 10153408 61115 SONITROL MONTHLY MONITORING 2/25 $1,164.00 1/17/2025 35017 385289 10153409 61115 SONITROL MONTHLY MONITORING 2/25 $815.00 1/17/2025 35017 385290 10153406 61115 SONITROL MONTHLY MONITORING 2/25 $51.03 1/17/2025 35017 385291 10141600 61115 SONITROL MONTHLY MONITORING 2/25 $642.00 1/17/2025 35017 385299 10153404 61115 SONITROL MONTHLY MONITORING 2/25 $102.00 1/17/2025 35017 385300 10153411 61115 SONITROL MONTHLY MONITORING 2/25 $29.97 1/17/2025 35017 385291 34341600 61115 SONITROL MONTHLY MONITORING 2/25 $439.00 1/17/2025 35017 385292 34353415 61115 SONITROL MONTHLY MONITORING 2/25 $351.00 1/17/2025 35017 385296 34353413 61115 SONITROL MONTHLY MONITORING 2/25 $202.00 1/17/2025 35017 385297 34353414 61115 SONITROL MONTHLY MONITORING 2/25 $430.00 $5,654.00 1/17/2025 35017 385298 34353412 61115 SONSRAY MACHINERY CASE EQUIPMENT SERVICE/REPAIR $1,661.61 $1,661.61 1/31/2025 35181 SWO066787-1 10153702 61101 SOUTHWEST AIRLINES AIRFARE/K.OLSEN $86.91 1/24/2025 35102 81778 10141500 65001 SOUTHWEST AIRLINES AIRFARE/K.OLSEN $51.05 $137.96 1/24/2025 35102 81778 34341500 65001

Page 34 of 40 ends

5.5.a
Packet Pg. 49
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
SOUTHWEST CONSTRUCTION INSTALL ROOF TARP $3,772.66 $3,772.66 1/17/2025 35018 16R 40100000 67012 SPRINGHILL SUITES LODGING/J.KLAUBER $668.18 1/24/2025 35102 81781 10141500 65001 SPRINGHILL SUITES LODGING/J.KLAUBER $392.42 1/24/2025 35102 81781 34341500 65001 SPRINGHILL SUITES LODGING/B.MCKINNEY $668.18 1/24/2025 35102 81782 10141500 65001 SPRINGHILL SUITES LODGING/B.MCKINNEY $392.42 $2,121.20 1/24/2025 35102 81782 34341500 65001 SRV FIRE PROTECTION DISPATCH SERVICES FY 24/25, 50% COST SHARE Q1 $328,317.10 1/17/2025 35019 24/25-1 10141200 61004 SRV FIRE PROTECTION DISPATCH SERVICES FY 24/25, 50% COST SHARE Q2 $352,685.50 1/17/2025 35019 24/25-2 10141200 61004 SRV FIRE PROTECTION DISPATCH SERVICES FY 24/25, 50% COST SHARE Q1 $192,821.15 1/17/2025 35019 24/25-1 34341200 61004 SRV FIRE PROTECTION DISPATCH SERVICES FY 24/25, 50% COST SHARE Q2 $207,132.75 $1,080,956.50 1/17/2025 35019 24/25-2 34341200 61004 ST. FRANCIS ELECTRIC ON CALL MAINTENANCE $498.50 $498.50 1/31/2025 35182 22035558 34353807 61101 ST. MARY & ST. JOHN RENTAL DEPOSIT REFUND $500.00 $500.00 1/31/2025 35169 81479404 10100000 20108 STAPLES BUSINESS ADVANTAGE WOOD YARD STICK $5.13 1/24/2025 35102 81722 10142200 62017 STAPLES BUSINESS ADVANTAGE WOOD YARD STICK $3.02 $8.15 1/24/2025 35102 81722 34342200 62017 STARBUCKS COFFEE TRAFFIC UNIT REFRESHMENTS/SNACKS $19.50 1/24/2025 35102 81716 10142200 65003 STARBUCKS COFFEE TRAFFIC UNIT REFRESHMENTS/SNACKS $11.45 1/24/2025 35102 81716 34342200 65003 STARBUCKS COFFEE EMPLYOEE RECOGNITION COFFEE $27.72 1/24/2025 35102 81746 10141100 65101 STARBUCKS COFFEE EMPLYOEE RECOGNITION COFFEE $16.28 $74.95 1/24/2025 35102 81746 34341100 65101 STUDIO 8 DANCE & PERFORMING ART DANCE CLASSES $3,717.00 1/3/2025 34795 27236-27343 10160436 44060 STUDIO 8 DANCE & PERFORMING ART THEATER CLASS $2,291.25 1/3/2025 34795 27363 10160437 44060 STUDIO 8 DANCE & PERFORMING ART COURSE SUPPLY FEE $450.00 $6,458.25 1/3/2025 34795 27363 SF 10160437 44060 STUDIOBLUE GALLERY EXHIBIT WALL DECAL $217.50 $217.50 1/24/2025 35102 81666 10160408 62016 SUNBELT CONTROLS QUARTERLY SOFTWARE MAINTENANCE $2,335.00 $2,335.00 1/17/2025 35020 2029652 10153100 61010 SUNDARAMOORTHY, SASI RENTAL DEPOSIT REFUND $1,000.00 $1,000.00 1/10/2025 34904 80736926 10100000 20108 SUNRISE BISTRO CATERING ANNUAL HOLIDAY PARTY FOOD/REFRESHMENTS $1,399.00 1/24/2025 35102 81822 10122300 65101 SUNRISE BISTRO CATERING ANNUAL HOLIDAY PARTY FOOD/REFRESHMENTS $100.00 $1,499.00 1/24/2025 35102 81826 10122300 65101 SUNRUN INSTALLATIONS CANCELED PROJECT PERMIT FEES REFUND $204.57 1/24/2025 35078 ELEC-2024-4631 10132200 42039 SUNRUN INSTALLATIONS CANCELED PROJECT PERMIT FEES REFUND $1.66 1/24/2025 35078 ELEC-2024-4631 10132100 44038 SUNRUN INSTALLATIONS CANCELED PROJECT PERMIT FEES REFUND $1.00 1/24/2025 35078 ELEC-2024-4631 10132100 44040 SUNRUN INSTALLATIONS CANCELED PROJECT PERMIT FEES REFUND $18.72 $225.95 1/24/2025 35078 ELEC-2024-4631 60332100 44073 SYBERTECH WASTE REDUCTION LTD TRASH CAN LINERS $3,160.38 $3,160.38 1/17/2025 35021 U11172 34353613 62008 TALX UC EXPRESS CLAIMS MANAGEMENT 11/1-2/28 $745.22 $745.22 1/3/2025 34796 2063236252 10122500 65201

Page 35 of 40 ends

5.5.a
Packet Pg. 50
Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
TANGONATION LIGHT DANCE CLASSES $197.50 $197.50 1/31/2025 35183 28546-28547 10160436 44060 TANGUDU, ABHISHEK RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34905 80737037 10100000 20108 TAP PLASTICS INC PRIVACY DESK SKIRT $123.04 $123.04 1/24/2025 35097 220000465149 10153401 62008 TARGET CREDIT-BAG FEE -$0.10 1/24/2025 35102 81626 10141500 62008 TARGET IPAD APPLE KEYBOARD $194.54 1/24/2025 35102 81627 10141500 62017 TARGET IPAD APPLE KEYBOARD $114.25 1/24/2025 35102 81627 34341500 62017 TARGET APPLE IPAD/PENCIL PRO $549.32 1/24/2025 35102 81628 10141500 62017 TARGET APPLE IPAD/PENCIL PRO $322.61 1/24/2025 35102 81628 34341500 62017 TARGET SUMMER CAMP SUPPLIES $56.52 1/24/2025 35102 81726 10160833 62016 TARGET SUMMER CAMP SUPPLIES $60.60 1/24/2025 35102 81727 10160833 62016 TARGET VOLUNTEER RECOGNITION GIFTS/SUPPLIES $164.10 1/24/2025 35102 81740 10141402 65101 TARGET VOLUNTEER RECOGNITION GIFTS/SUPPLIES $96.38 1/24/2025 35102 81740 34341402 65101 TARGET TEEN CENTER GINGERBREAD KITS $34.10 1/24/2025 35102 81743 10160635 62016 TARGET BAH HUMBUG RACE SUPPLIES $14.17 $1,606.49 1/24/2025 35102 81768 10160804 62016 TEAMSIDELINE.COM RENEWAL/PCS SOFTWARE $1,750.00 $1,750.00 1/31/2025 35184 TS-INV-15654 10160805 61001 TESLA ENERGY OPERATIONS EXTRA PERMIT FEE PAYMENT REFUND $450.00 $450.00 1/31/2025 35137 ELEC-2025-5064 10132100 44028 THE BRASS DOOR VOLUNTEER RECOGNITION DINNER $2,174.59 1/24/2025 35098 12/4/24 10141402 65101 THE BRASS DOOR VOLUNTEER RECOGNITION DINNER $1,277.14 $3,451.73 1/24/2025 35098 12/4/24 34341402 65101 THE ECOHERO SHOW RECYCLING OUTREACH ASSEMBLY $2,500.00 $2,500.00 1/10/2025 34922 2844 34453201 61001 THE MERITAGE RESORT LODGING/C.FRANCO $597.26 $597.26 1/24/2025 35102 81632 10114200 65003 THE OCHRE ELEPHANT VISUAL ARTS CLASS $450.00 $450.00 1/10/2025 34923 27246 10160408 44055 THIRD DEGREE COMMUNICATIONS REGISTRATION/M.BRACAMONTE $374.85 1/24/2025 35102 81774 10141500 65001 THIRD DEGREE COMMUNICATIONS REGISTRATION/M.BRACAMONTE $220.15 $595.00 1/24/2025 35102 81774 34341500 65001 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $21.88 1/17/2025 35022 957166005 12/24 10111000 61301 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $124.74 1/17/2025 35022 957166005 12/24 10160100 61301 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $43.48 1/17/2025 35022 957166005 12/24 10141100 61301 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $187.11 1/17/2025 35022 957166005 12/24 10152100 61301 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $444.90 1/17/2025 35022 957166005 12/24 10153100 61302 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $25.54 1/17/2025 35022 957166005 12/24 34341100 61301 T-MOBILE USA, INC WIRELESS SERVICE 12/2-1/1 $207.18 1/17/2025 35023 962241017 12/24 10160106 61301 T-MOBILE USA, INC INVESTIGATIVE RESEARCH FEE $31.50 1/24/2025 35096 9588300550 10141700 61001 T-MOBILE USA, INC INVESTIGATIVE RESEARCH FEE $18.50 $1,104.83 1/24/2025 35096 9588300550 34341700 61001 TMT ENTERPRISES, INC SPORTS FIELD MATERIALS $1,240.10 1/17/2025 35024 22172 10153600 62006

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Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
TMT ENTERPRISES, INC SPORTS FIELD MATERIALS $1,240.11 1/17/2025 35024 22172 34353600 62006 TMT ENTERPRISES, INC SPORTS FIELD MATERIALS $1,181.64 1/31/2025 35185 22427 10153600 62006 TMT ENTERPRISES, INC SPORTS FIELD MATERIALS $1,181.64 $4,843.49 1/31/2025 35185 22427 34353600 62006 TOMLINSON, CHRISTIE DANCE CLASSES $2,303.00 $2,303.00 1/3/2025 34797 27170-27177 10160436 44060 TOMMY BAHAMA MIRAMONTE LODGING/K.TJAHJADI $585.02 1/24/2025 35102 81776 10141500 65001 TOMMY BAHAMA MIRAMONTE LODGING/K.TJAHJADI $343.58 1/24/2025 35102 81776 34341500 65001 TOMMY BAHAMA MIRAMONTE LODGING/T.BRYAN $535.55 1/24/2025 35102 81777 10141500 65001 TOMMY BAHAMA MIRAMONTE LODGING/T.BRYAN $314.53 $1,778.68 1/24/2025 35102 81777 34341500 65001 TPX COMMUNICATIONS PHONE SERVICE $15,850.88 1/3/2025 34798 183360532-0 10123300 61301 TPX COMMUNICATIONS PHONE SERVICE $16,185.44 $32,036.32 1/24/2025 35099 183853723-0 10123300 61301 TRANSUNION RISK INVESTIGATION SEARCH SERVICE $232.97 1/24/2025 35102 81647 10141700 61001 TRANSUNION RISK INVESTIGATION SEARCH SERVICE $136.83 $369.80 1/24/2025 35102 81647 34341700 61001 TRB & ASSOCIATES INSPECTION/PLAN REVIEW SERVICES $715.00 $715.00 1/31/2025 35186 5959 10132400 61001 TREANORHL, INC. FHF BOONE HOUSE DESIGN SERVICES CIP 925418 $5,750.00 1/24/2025 35100 55079 40100000 67012 TREANORHL, INC. FHF BOONE HOUSE DESIGN SERVICES CIP 925418 $11,500.00 1/24/2025 35100 55227 40100000 67012 TREANORHL, INC. FHF BOONE HOUSE DESIGN SERVICES CIP 925418 $10,334.50 1/24/2025 35100 55467 40100000 67012 TREANORHL, INC. FHF BOONE HOUSE DESIGN SERVICES CIP 925418 $4,615.50 $32,200.00 1/24/2025 35100 55614 40100000 67012 TRILOGY MEDWASTE WEST, LLC MEDICAL RECYCLING $628.43 1/10/2025 34924 1653932 34453201 61001 TRILOGY MEDWASTE WEST, LLC MEDICAL RECYCLING $754.01 $1,382.44 1/31/2025 35187 1668540 34453201 61001 TRINITY CARE HOME RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34906 80736794 10100000 20108 TRUDOOR, LLC CITYWIDE DOOR HARDWARE $630.96 $630.96 1/24/2025 35101 184828 40100000 67012 TST* DONHAO - EM CHARGE CARD ERROR $142.36 $142.36 1/24/2025 35102 81694 10100000 20703 TUGWELL, AMANDA MILEAGE REIMBURSEMENT $286.76 $286.76 1/10/2025 34925 REIMB 11/12-11/17 10160105 65001 TURF STAR INC OFF ROAD VEHICLE MAINTENANCE $267.82 1/10/2025 34926 INV064115 10153702 62008 TURF STAR INC MOWER MAINTENANCE $257.40 1/17/2025 35025 INV064043 10153702 62008 TURF STAR INC MATERIAL HANDLER CAPITAL EQUIPMENT REPLACEMENT $51,743.38 $52,268.60 1/17/2025 35026 INV064960 60253100 67004 UNITED SITE SERVICES PORTABLE RESTROOMS $82.38 1/17/2025 35027 114-13986363 10160302 61001 UNITED SITE SERVICES PORTABLE RESTROOMS $81.32 1/17/2025 35027 114-13988461 10160307 61201 UNITED SITE SERVICES PORTABLE RESTROOMS $81.32 $245.02 1/17/2025 35027 114-13993034 10160307 61201 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $1,077.00 1/17/2025 35028 2024-1201 10153420 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $2,597.00 1/17/2025 35028 2024-1201 10153419 61104

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Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

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NUMBER
UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $1,799.00 1/17/2025 35028 2024-1201 10153408 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $902.00 1/17/2025 35028 2024-1201 10153410 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $902.00 1/17/2025 35028 2024-1201 10153407 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $2,089.00 1/17/2025 35028 2024-1201 10153418 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $3,023.00 1/17/2025 35028 2024-1201 10153401 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $2,723.00 1/17/2025 35028 2024-1201 10153403 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $1,619.00 1/17/2025 35028 2024-1201 10153404 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $3,701.00 1/17/2025 35028 2024-1201 10153406 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $2,633.00 1/17/2025 35028 2024-1201 34353412 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $2,338.00 1/17/2025 35028 2024-1201 34353417 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $402.00 1/17/2025 35028 2024-1201 34353416 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $940.00 1/17/2025 35028 2024-1201 34353414 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 12/24 $1,204.00 1/17/2025 35028 2024-1201 34353413 61104 UNIVERSAL BLDG SVCS JANITORIAL SERVICE 11/2-11/23 $2,096.00 $30,045.00 1/17/2025 35028 531462 34353416 61104 UPMA RENTAL DEPOSIT REFUND $1,115.00 $1,115.00 1/10/2025 34907 81074398 10100000 20108 VANIPURAM, POORNIMA RENTAL DEPOSIT REFUND $534.00 $534.00 1/10/2025 34908 78625498 10100000 20108 VASUDEVAN, PRIYA ADULT BOMBAY JAM $318.00 $318.00 1/17/2025 35029 27119-27583 10160802 44062 VELDANDI, MARUTHI VANPOOL DRIVER BONUS $166.67 $166.67 1/24/2025 35084 011425-3 34751603 61001 VENNAM, SWATHI DEPOSIT RENTAL REFUND $500.00 $500.00 1/31/2025 35171 81479240 10100000 20108 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 11/24 $423.04 1/10/2025 34927 20183849 10160434 48002 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 11/24 $7,239.94 1/10/2025 34927 20183849 10160435 48002 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 11/24 $2,477.73 1/10/2025 34927 20183849 10160430 61001 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 11/24 $7,639.99 1/10/2025 34927 20183849 10160442 61001 VENUETECH MANAGEMENT DVPAC/THEATER MGMT - 2/25 $41,422.41 1/10/2025 34928 20183856 10160430 61001 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 12/24 $6,877.80 1/17/2025 35030 20183862 10160435 48002 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 12/24 $162.35 1/17/2025 35030 20183862 10160434 48002 VENUETECH MANAGEMENT LABOR REIMBURSEMENT 12/24 $6,281.80 $72,525.06 1/17/2025 35030 20183862 10160430 61001 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $38.01 1/3/2025 34799 6101524821 10160106 61301 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $744.92 1/3/2025 34799 6101524821 10141100 61301 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $16.50 1/3/2025 34799 6101524821 10152304 61301 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $38.01 1/3/2025 34799 6101524821 10151100 61301 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $228.06 1/3/2025 34799 6101524821 10153100 61302 VERIZON WIRELESS WIRELESS SERVICE 11/20-12/19 $437.49 1/3/2025 34799 6101524821 34341100 61301 VERIZON WIRELESS WIRELESS SERVICE 12/20-1/19 $38.01 1/31/2025 35188 6103965460 10151100 61301 VERIZON WIRELESS WIRELESS SERVICE 12/20-1/19 $744.91 1/31/2025 35188 6103965460 10141100 61301 VERIZON WIRELESS WIRELESS SERVICE 12/20-1/19 $38.01 1/31/2025 35188 6103965460 10160106 61301 VERIZON WIRELESS WIRELESS SERVICE 12/20-1/19 $228.06 1/31/2025 35188 6103965460 10153100 61302 VERIZON WIRELESS WIRELESS SERVICE 12/20-1/19 $437.48 $2,989.46 1/31/2025 35188 6103965460 34341100 61301

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Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
VISIONONE, INC TICKETING SOFTWARE 12/24 $1,418.00 $1,418.00 1/17/2025 35031 INV-77855 10160430 61001 VITALIS, COLLEEN MUSIC CLASS $484.53 $484.53 1/10/2025 34929 26907 10160438 44060 WALGREENS HOLIDAY PERFORMANCES/RECITAL CANDY CANES $28.92 $28.92 1/24/2025 35102 81668 10160438 62016 WALLIS, ERIC COMMISSIONER STIPEND $250.00 $250.00 1/3/2025 34800 JAN 2025 10131100 61012 WALMART SUPERCENTER CLOROX BLEACH $23.10 $23.10 1/24/2025 35102 81714 10160311 62016 WEST COAST ARBORISTS TREE/STUMP REMOVAL SERVICE $2,076.65 1/3/2025 34801 223331 40100000 67012 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $4,464.40 1/17/2025 35032 223847-A 10153600 61109 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $23,916.90 1/17/2025 35032 223330 34353504 61109 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $39,974.90 1/17/2025 35032 223846 34353504 61109 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $498.60 1/17/2025 35032 223848 40100000 67012 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $2,673.00 1/24/2025 35104 224180 10153600 61109 WEST COAST ARBORISTS TREE MAINTENANCE SERVICE $747.90 $74,352.35 1/31/2025 35189 224230 40100000 67012 WEST COAST CODE CONS PLAN CHECK SERVICES $972.50 $972.50 1/24/2025 35105 224-012-035-01 10132400 61001 WESTIN HOTEL LODGING/D.CARLSON $321.79 1/24/2025 35102 81625 10141500 65001 WESTIN HOTEL LODGING/D.CARLSON $188.99 $510.78 1/24/2025 35102 81625 34341500 65001 WOMEN'S COUNCIL OF REALTORS RENTAL DEPOSIT REFUND $500.00 $500.00 1/10/2025 34909 80736171 10100000 20108 WONDER ICE CREAM COMPANY ICE CREAM FOR BAH HUMBUG RACE PARTICIPANTS $663.36 $663.36 1/24/2025 35102 81769 10160804 62016 WONDERSHARE CELL PHONE MAINTANCE SOFTWARE $120.90 $120.90 1/24/2025 35102 81797 10123100 62008 WORKBRIGHT LICENSING FEE 1/25 $507.25 $507.25 1/31/2025 35190 33603 10122400 62202 WOWHAUS LLC SAN RAMON LIBRARY PUBLIC ART PIECE CIP 955482 $10,000.00 1/24/2025 35106 12025 40100000 67012 WOWHAUS LLC SAN RAMON LIBRARY PUBLIC ART PIECE CIP 955482 $7,500.00 $17,500.00 1/24/2025 35106 1225 40100000 67012 XEROX CORPORATION COPIER/LEASE MAINTENANCE $10.61 1/3/2025 34802 022585427 10123100 61101 XEROX CORPORATION COPIER/LEASE MAINTENANCE $2,258.52 1/3/2025 34802 702745411 10123100 61101 XEROX CORPORATION COPIER/LEASE MAINTENANCE $118.12 1/3/2025 34802 022585427 10123100 61201 XEROX CORPORATION COPIER/LEASE MAINTENANCE $2,331.36 1/3/2025 34802 702745411 10123100 61201 XEROX CORPORATION COPIER/LEASE MAINTENANCE $10.76 1/17/2025 35033 022770129 10123100 61101 XEROX CORPORATION COPIER/LEASE MAINTENANCE $118.12 $4,847.49 1/17/2025 35033 022770129 10123100 61201 ZHI YIN VOCAL MUSIC DEPOSIT RENTAL REFUND $500.00 1/31/2025 35172 81479126 10100000 20108 ZHI YIN VOCAL MUSIC DEPOSIT RENTAL REFUND $100.00 $600.00 1/31/2025 35173 81479113 10100000 20108 ZOOM VIDEO COMMUNICATIONS SUBSCRIPTION/CITYWIDE $589.75 $589.75 1/24/2025 35102 81796 10123100 62008

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Attachment: A: Register of Demands (2025-10 : Rod)
CITY OF SAN RAMON REGISTER OF DEMANDS JANUARY 2025

VENDOR NAME DESCRIPTION

TRANSACTION
AMOUNT
VENDOR
TOTALS
CHECK
DATE
CHECK

NUMBER INVOICE NUMBER

ACCOUNT
NUMBER
ZUMAR INDUSTRIES METAL PICNIC AREA SIGNS $410.66 $410.66 1/31/2025 35191 50723 10160310 62008 $4,825,285.50 $4,825,285.50
Respectfully Submitted By:

Candace L. Daniels
Finance Division Manager

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Attachment: A: Register of Demands (2025-10 : Rod)

CITY COUNCIL STAFF REPORT
DATE: February 25, 2025
TO: City Council/City Manager
FROM: Brian Bornstein, Public Works Director
By: Chen Hsieh, Senior Civil Engineer
SUBJECT: RESOLUTION NO. 2025-018 - Adopting Volume 1 and the City of San Ramon’s Portion of Volume 2 of the 2024 Contra Costa County Hazard Mitigation Plan

EXECUTIVE SUMMARY
This Resolution adopts elements of the 2024 Contra Costs County Hazard Mitigation Plan. The Plan is an update to the 2018 Hazard Mitigation Plan that was previously adopted by the City.

RECOMMENDED ACTION
Staff recommends approving this Resolution, adopting Volume 1 and the City of San Ramon’s portion of Volume 2 of the 2024 Contra Costa County Hazard Mitigation Plan.

BACKGROUND
In December 2023, a coalition of Contra Costa County cities and special districts embarked on a planning process to prepare for and lessen the impacts of specified natural hazards by updating the Contra Costa County Hazard Mitigation Plan (HMP). The Plan fulfills Federal mandates from the Disaster Mitigation Act of 2000 (Public Law 106-390). The purpose of the HMP is to identify activities that can be undertaken by both the public and private sectors to reduce risk to natural, human-caused, and technological hazards, property damage, and economic disruption caused by these hazards. The HMP reviews mitigation activities and selects those that will be most beneficial for Contra Costa County.

This effort represents the fourth comprehensive update to the initial Hazard Mitigation Plan, which was approved by the Federal Emergency Management Agency (FEMA) in November of 2005 and developed in partnership with the Association of Bay Area Governments (ABAG). The previous update was adopted by the City Council on March 27, 2018 with Resolution No. 2018- 036. The 40-member coalition of partners involved in this Program includes unincorporated Contra Costa County, 16 city and town governments, and 24 special purpose districts. The planning area for the HMP was defined to consist of these partnering jurisdictions within the geological boundary of Contra Costa County. The result of the organizational effort will be a FEMA and California Office of Emergency Services (CalOES) approved multi-jurisdictional, multi-hazard mitigation plan.

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DISCUSSION
Hazard mitigation is defined in this context as any sustainable action taken to reduce or eliminate long-term risk to people and property from future disasters. Mitigation planning breaks the cycle of disaster damage, reconstruction, repeated damage, and includes long-term solutions that reduce the impact of disasters in the future, including:
• Keeping the hazards away from people, property, and structures; • Keeping people, property, or structures away from the hazards; and • Reducing the impact of the hazards on victims (e.g., insurance).

The hazard identification and profiling in the HMP addresses the following hazards of concern within the planning area:
• Climate Change
• Dam and levee failure
• Drought
• Earthquake
• Flood
• Landslide
• Sea level rise
• Severe weather
• Tsunami
• Wildfire
• Other hazards of concern, such as cybersecurity threats, hazardous materials incidents, utility interruptions, active shooter incidents, and terrorism All participating local jurisdictions have been responsible to identify community-specific risks/hazards and identify and prioritize mitigation actions that would reduce the costs of disaster response and recovery, protect people and infrastructure, and minimize overall disruption to their respective communications in the event of a disaster. A capability assessment was also conducted for each jurisdictions’ authorities, policies, programs, and resources.

A 16-member Steering Committee (SC) composed of representative stakeholders was formed early in the planning process to oversee all phases of the planning process. In addition, the public was given an opportunity to be involved throughout the planning process via a public survey, inperson and virtual public meetings, and public engagement activities to review the draft HMP.

FEMA approved the HMP for Contra Costa County on September 18, 2024. FEMA has also issued an Amendment Notice, or an approvable pending adoption letter for the HMP, to include the rest of the participating jurisdictions, including City of San Ramon, on January 22, 2025 (Attachment A). Each participating jurisdiction must submit an adoption resolution to FEMA for the HMP to be considered fully approved. Upon adoption of Volume 1 (Attachment B) and City Annex (Attachment C) of Volume 2 of the 2024 Contra Costa County Hazard Mitigation Plan (HMP) and subsequent approval of said Plan by CalOES and FEMA, the City will be eligible for

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FEMA hazard mitigation grant programs. The grant funds are made available to states and local governments and can be used to implement the long-term hazard mitigation measures specified within the City’s annex of the HMP, such as Hazard Mitigation Grant Program (HMGP) and Flood Mitigation Assistance Grant Program (FMA). For example, the City had been obligated more than $1.5M by FEMA and CalOES for the emergency and permanent damage resulting from the 2022/2023 winter storms. The LHMP allowed the City to apply for these grants.

The HMGP was authorized under Section 404 of the Stafford Act and is administered by FEMA, which provides grants to States and local governments to implement long-term hazard mitigation measures after a major disaster declaration. The purpose of the Program is to reduce the loss of life and property due to natural disasters and to enable mitigation measures to be implemented during the immediate recovery from a disaster.

The FMA is a competitive grant program that provides funding to State and local governments mitigating repetitive flood damage to structures or buildings insured by the National Flood Insurance Program. FEMA chooses recipients based on the applicant’s ranking of the project, eligibility, and cost-effectiveness of the project.

The HMP is considered a living document and as such, as awareness of additional hazards develops and new strategies and projects are conceived to offset or prevent losses due to natural disasters, the HMP will be evaluated and revised on a 5-year time frame. The Steering Committee will convene on an annual basis to determine the progress of the identified mitigation actions. As such, the City will have the opportunity to revise the list of action items during the annual review and update process.

FISCAL ANALYSIS
There are no fiscal impacts to the City currently. Adoption of the updated HMP is required for the City to be eligible for hazard mitigation grants and post-disaster funding. The chance of a successful grant application depends heavily on the type of project and the cost-effectiveness of the project.

STEPS FOLLOWING APPROVAL
. The City will send a certified copy of the adopted Resolution to Contra Costa County for inclusion with the final certification of the HMP.
. Once Resolutions are received from each of the planning partners, the County will submit the Resolutions to FEMA to complete the approval process.
. Upon FEMA approval of the HMP, the City will be eligible to continue to apply for grant funding.

ATTACHMENT
A: Contra Costa County Hazard Mitigation Plan Amendment Notice from FEMA B: 2024 Contra Costa Hazard Mitigation Plan Volume 1
C: City of San Ramon Annex (portion of Volume 2)

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RESOLUTION NO. 2025-018

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SAN RAMON ADOPTING VOLUME 1 AND THE CITY OF SAN RAMON’S PORTION OF VOLUME 2 OF THE 2024 CONTRA COSTA COUNTY HAZARD MITIGATION PLAN WHEREAS, all of Contra Costa County has exposure to natural hazards that increase the risk to life, property, environment, and the County’s economy; and WHEREAS, pro-active mitigation of known hazards before a disaster event can reduce or eliminate long-term risk to life and property; and
WHEREAS, The Disaster Mitigation Act of 2000 (Public Law 106-390) established new requirements for pre- and post-disaster hazard mitigation programs; and WHEREAS, a coalition of Contra Costa County cities, towns, and special districts with like planning objectives has been formed to pool resources and create consistent mitigation strategies within the Contra Costa County planning area; and WHEREAS, the coalition has prepared a multi-hazard mitigation plan, hereby known as the Contra Costa County Hazard Mitigation Plan, in accordance with federal laws, including the Stafford Act, as amended, completed a planning process that engages the public, assesses the risk and vulnerability to the impacts of natural hazards, develops a mitigation strategy consistent with a set of uniform goals and objectives, and creates a Plan for implementing, evaluating, and revising this strategy; and
WHEREAS, the Plan was previously adopted by the City Council on March 27, 2018 with Resolution No. 2018-036, and the Plan must be evaluated and revised every five (5) years for participants to be eligible for FEMA hazard mitigation grant programs; and WHEREAS, the coalition has completed the process of updating the Plan and FEMA issued an approvable pending adoption letter on September 18, 2024, requiring the City to submit an adoption resolution to FEMA for the Plan to be considered fully approved.

NOW, THEREFORE, BE IT RESOLVED that the City of San Ramon adopts Volume 1 in its entirety, and the City of San Ramon’s jurisdictional annex of Volume 2 of the 2024 Contra Costa County Hazard Mitigation Plan (HMP).

PASSED, APPROVED, AND ADOPTED at the meeting of February 25, 2025 by the following vote:

AYES:

NOES:

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ABSENT:

ABSTAIN:
________________________
Mark Armstrong, Mayor
ATTEST:
___________________________
Christina Franco, City Clerk

5.6 Packet Pg. 60
U.S. Department of Homeland Security
FEMA Region 9
1111 Broadway, Suite 1200
Oakland, CA 94607-4052
www.fema.gov
January 22, 2025
Beatriz Portillo
Senior Emergency Planning Coordinator
Contra Costa County Office of Emergency Services
1850 Muir Road
Martinez, CA 94553
Dear Beatriz Portillo:

The 2024 Contra Costa County Hazard Mitigation Plan has been amended to include the jurisdictions listed below as official planning participants:

1. City of Brentwood

2. City of Clayton

3. Town of Danville

4. City of El Cerrito

5. City of Hercules

6. City of Lafayette

7. City of Martinez

8. Town of Moraga

9. City of Oakley

10. City of Orinda

11. City of Pinole

12. City of Pleasant Hill

13. City of Richmond

14. City of San Pablo

15. City of San Ramon

16. City of Walnut Creek

17. Central Contra Costa Sanitary District

18. Contra Costa County Fire Protection District

19. Contra Costa County Flood Control and Water Conservation District

20. Contra Costa Water District

21. Ironhouse Sanitary District

22. Kensington Fire Protection District

23. Kensington Police Protection and Community Services District

24. Mt. View Sanitary District

25. Pleasant Hill Parks and Recreation District

26. Reclamation District No. 799 (Hotchkiss Tract)

27. Reclamation District No. 830 (Jersey Island)

28. Reclamation District No. 2025 (Holland Tract)

29. Reclamation District No. 2026 (Webb Tract)

30. Reclamation District No. 2065 (Veale Tract)

31. Reclamation District No. 2122 (Winter Island)

ATTACHMENT A

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Attachment: A: Contra Costa County Hazard Mitigation Plan Amendment Notice from FEMA (2025-018 : Adopting Volume 1 and the City of San Contra Costa County Hazard Mitigation Plan Amendment Notice January 22, 2025

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32. Reclamation District No. 2137

33. Rodeo-Hercules Fire Protection District

34. San Ramon Valley Fire Protection District

35. San Ramon Valley Unified School District

36. Town of Discovery Bay Community Services District

37. West County Wastewater District
These jurisdictions must submit an adoption resolution to FEMA in order to be considered fully approved.

FEMA’s approval of the 2024 Contra Costa County Hazard Mitigation Plan remains for a period of five years from the original approval date of September 18, 2024, for all approved participants. An updated list of the status of current participating jurisdictions is enclosed with this letter.

Prior to September 18, 2029, Contra Costa County and all participating jurisdictions are required to review and revise the plan to reflect changes in development, progress in local mitigation efforts, and changes in priorities, and resubmit it for approval in order to continue to be eligible for mitigation project grant funding.

The continued approval of this plan ensures Contra Costa County and all participating jurisdictions’ continued eligibility for project grants under FEMA’s Hazard Mitigation Assistance programs, including the Hazard Mitigation Grant Program, Building Resilient Infrastructure and Communities Program, and Flood Mitigation Assistance Program. All requests for funding, however, will be evaluated individually according to the specific eligibility, and other requirements of the particular program under which applications are submitted.

If you have any questions regarding the planning or review processes, please contact the FEMA Region 9 Hazard Mitigation Planning Team at [email protected].

Sincerely,

Alison Kearns
Planning and Implementation Branch Chief
Mitigation Division
FEMA Region 9
Enclosures (2)
Contra Costa Annex Review Tool, dated January 22, 2025
Status of Participating Jurisdictions, dated January 22, 2025 cc: Robyn Fennig, State Hazard Mitigation Officer, California Governor’s Office of Emergency Services
Victoria LaMar-Haas, Hazard Mitigation Planning Chief, California Governor’s Office of Emergency Services

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Status of Participating Jurisdictions as of January 22, 2025 Jurisdictions – Adopted and Approved
# Jurisdiction Adoption Receipt Date
1 Contra Costa County 11/14/2024
2 Bethel Island Municipal Improvement District 11/18/2024 3 Diablo Water District 9/18/2024
Jurisdictions – Approvable Pending Adoption
# Jurisdiction
1 City of Brentwood
2 City of Clayton
3 Town of Danville
4 City of El Cerrito
5 City of Hercules
6 City of Lafayette
7 City of Martinez
8 Town of Moraga
9 City of Oakley
10 City of Orinda
11 City of Pinole
12 City of Pleasant Hill
13 City of Richmond
14 City of San Pablo
15 City of San Ramon
16 City of Walnut Creek
17 Central Contra Costa Sanitary District
18 Contra Costa County Fire Protection District
19 Contra Costa County Flood Control and Water Conservation District 20 Contra Costa Water District
21 Ironhouse Sanitary District
22 Kensington Fire Protection District
23 Kensington Police Protection and Community Services District 24 Mt. View Sanitary District
25 Pleasant Hill Parks and Recreation District
26 Reclamation District No. 799 (Hotchkiss Tract)
27 Reclamation District No. 830 (Jersey Island)
28 Reclamation District No. 2025 (Holland Tract)
29 Reclamation District No. 2026 (Webb Tract)
30 Reclamation District No. 2065 (Veale Tract)
31 Reclamation District No. 2122 (Winter Island)
32 Reclamation District No. 2137

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www.fema.gov
33 Rodeo-Hercules Fire Protection District
34 San Ramon Valley Fire Protection District
35 San Ramon Valley Unified School District
36 Town of Discovery Bay Community Services District
37 West County Wastewater District

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Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) 2024 Hazard Mitigation Plan
Contra Costa County, California
Table of Contents i

TABLE OF CONTENTS
Executive Summary.............................................................................................................................1 Chapter 1. Introduction............................................................................................................... 3

1.1 Purpose of the Plan................................................................................................................ 3

1.2 Hazard Mitigation Program..................................................................................................... 3

1.3 Planning Area......................................................................................................................... 4

1.4 Participating Jurisdictions ....................................................................................................... 4

1.5 Plan Participation ................................................................................................................... 5

1.5.1. Core Planning Team .............................................................................................................................5

1.5.2. Steering Committee ..............................................................................................................................6

1.5.3. Local Planning Teams and Community Representatives.....................................................................7

1.5.4. Supporting Organizations .....................................................................................................................7

1.6 Plan Approval and Adoption ................................................................................................... 7 Chapter 2. Planning Process...................................................................................................... 8

2.1 Review of Existing Programs and Plans ............................................................................... 10

2.2 Equity Consideration for the Underserved Population........................................................... 11 Chapter 3. Community Profile.................................................................................................. 14

3.1 Contra Costa County History................................................................................................ 15

3.2 Topography .......................................................................................................................... 15

3.3 Climate................................................................................................................................. 16

3.4 Land Use.............................................................................................................................. 18

3.5 Changes in Development & Development Trends ................................................................ 20

3.5.1. Implications of Development on Risk................................................................................................. 20

3.6 Future Trends in Development ............................................................................................. 21

3.7 Demographics ...................................................................................................................... 21

3.7.2. Underserved Population .................................................................................................................... 24

3.8 Economy .............................................................................................................................. 26

3.9 Critical Infrastructure ............................................................................................................ 28

3.10 Capability Assessment ......................................................................................................... 30

3.10.1. Planning and Regulatory Capabilities ........................................................................................... 30

3.10.2. Administrative and Technical Capabilities..................................................................................... 33

3.10.3. Financial Capabilities..................................................................................................................... 36

3.10.4. Education and Outreach Capabilities ............................................................................................ 37

3.11 Hazard Mitigation Integration................................................................................................ 38

3.11.1. Existing Plan Integration................................................................................................................ 39

3.11.2. Potential Future Integration ........................................................................................................... 39

3.12 National Flood Insurance Program ....................................................................................... 40

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Contra Costa County, California
Table of Contents ii

3.12.1. Contra Costa County Floodplain Management Program .............................................................. 41

3.12.2. Floodplain Managers ..................................................................................................................... 42

3.12.3. Participation Activities.................................................................................................................... 43 Chapter 4. Hazard Identification and Risk Assessment ......................................................... 44

4.1 Identified Hazards ................................................................................................................ 44

4.2 Presidential Disaster and Emergency Declarations .............................................................. 46

4.3 Risk Assessment Methodology............................................................................................. 48

4.3.1. Probability of Occurrence................................................................................................................... 49

4.3.2. Extent Factors.................................................................................................................................... 50

4.3.3. Vulnerability Factors .......................................................................................................................... 51

4.3.4. Impact Factors ................................................................................................................................... 52

4.4 FEMA National Risk Index Scores........................................................................................ 56

4.4.1. Expected Annual Loss ....................................................................................................................... 56

4.4.2. Social Vulnerability............................................................................................................................. 57

4.4.3. Community Resilience ....................................................................................................................... 57

4.5 Total Risk Scores ................................................................................................................. 58

4.6 Hazard Profiles..................................................................................................................... 61

4.6.1. Climate Change ................................................................................................................................. 61

4.6.2. Dam and Levee Failure...................................................................................................................... 76

4.6.3. Drought ............................................................................................................................................ 103

4.6.4. Earthquake....................................................................................................................................... 119

4.6.5. Flood ................................................................................................................................................ 142

4.6.6. Landslide.......................................................................................................................................... 167

4.6.7. Sea Level Rise................................................................................................................................. 181

4.6.8. Severe Weather ............................................................................................................................... 195

4.6.9. Tsunami ........................................................................................................................................... 232

4.6.10. Wildfire......................................................................................................................................... 246

4.6.11. Other Hazard of Concern ............................................................................................................ 263 Chapter 5. Mitigation Strategy................................................................................................ 284

5.1 Mitigation Goals.................................................................................................................. 284

5.2 Mitigation Strategies and Actions ....................................................................................... 285

5.2.1. Mitigation Action Plan ...................................................................................................................... 286

5.3 Changes in Priority ............................................................................................................. 290 Chapter 6. Plan Maintenance.................................................................................................. 293

6.1 Plan Update ....................................................................................................................... 293

6.1.1. Monitoring, Evaluating ..................................................................................................................... 293

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Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) 2024 Hazard Mitigation Plan
Contra Costa County, California
Table of Contents i

APPENDICES
Appendix A. Mitigation Actions................................................................................................. 298 Appendix B. Stakeholder Engagement..................................................................................... 355 Appendix C. Public Engagement............................................................................................... 388 Appendix D. Plan Adoption ....................................................................................................... 511

LIST OF TABLES
Table 1-1. Participating Jurisdictions .....................................................................................................................5 Table 1-2. Core Planning Team Members.............................................................................................................5 Table 1-3. Hazard Mitigation Steering Committee Members .................................................................................6 Table 3-1. Contra Costa County Monthly Climate Summary (1970 – 2023) ...................................................... 17 Table 3-2. Acreages of Land Use Designations ................................................................................................. 18 Table 3-3. Population Estimates .................................................................................................................... 22 Table 3-4. Poverty Thresholds for 2022 by Size of Family ................................................................................. 23 Table 3-5. Age Distribution (2022) ................................................................................................................. 23 Table 3-6. Racial and Ethnic Distribution (2022) ........................................................................................... 24 Table 3-7. Social Vulnerability Index (2020) ....................................................................................................... 25 Table 3-8. Employment by Industry (2022)......................................................................................................... 27 Table 3-9. Employment Status (2022) ................................................................................................................ 27 Table 3-10. Occupation (2022) ......................................................................................................................... 27 Table 3-11. Income and Benefits (2022) .......................................................................................................... 28 Table 3-12. Critical Infrastructure in Contra Costa County............................................................................... 28 Table 3-13. Countywide Planning and Regulatory Capabilities........................................................................ 30 Table 3-14. Administrative and Technical Capabilities..................................................................................... 34 Table 3-15. Financial Resources ...................................................................................................................... 36 Table 3-16. Education and Outreach Resources ............................................................................................. 37 Table 3-17. Current Plan Integration ................................................................................................................ 39 Table 3-18. Potential Future Integration ........................................................................................................... 40 Table 3-19. NFIP Participation Information....................................................................................................... 40 Table 3-20. Floodplain Managers ..................................................................................................................... 42 Table 4-1. Contra Costa County Hazards........................................................................................................... 45 Table 4-2. State and Federal Disaster Declarations for Contra Costa County ................................................... 46 Table 4-3. Probability of Occurrence................................................................................................................... 49 Table 4-4. Extent/Intensity Factor ....................................................................................................................... 50 Table 4-5. Catastrophic Factor............................................................................................................................ 50 Table 4-6. Population Exposure Factor .............................................................................................................. 51 Table 4-7. Property Exposure Factor.................................................................................................................. 51 Table 4-8. Changes in Development Factor ....................................................................................................... 51 Table 4-9. Population and Life Safety Factor...................................................................................................... 52 Table 4-10. Underserved/Equity Factor............................................................................................................ 52 Table 4-11. Property Damage Factor ............................................................................................................... 53 Table 4-12. Economic Factor............................................................................................................................ 53 Table 4-13. Environmental Factor .................................................................................................................... 54 Table 4-14. Essential Operations Factor .......................................................................................................... 54 Table 4-15. Future Development Factor........................................................................................................... 55 Table 4-16. Climate Change Factor.................................................................................................................. 55 Table 4-17. Risk Index Score for Contra Costa County (FEMA National Risk Index)...................................... 56 Table 4-18. Expected Annual Loss for Contra Costa County (FEMA National Risk Index) ............................. 57 Table 4-19. Social Vulnerability for Contra Costa County (FEMA National Risk Index) .................................. 57 Table 4-20. Community Resilience for Contra Costa County (FEMA National Risk Index) ............................. 58 Table 4-21. 2024 Hazard Risk Score for Contra Costa County........................................................................ 59

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Contra Costa County, California
Table of Contents ii
Table 4-22. Climate Change Indicators in the United States............................................................................ 62 Table 4-23. IPCC Scenarios ............................................................................................................................. 64 Table 4-24. Climate Change Impacts in California ..................................................................................... 66 Table 4-25. Neighborhoods At Risk Table (Contra Costa County, CA) ........................................................... 71 Table 4-26. Probability of Occurrence .............................................................................................................. 73 Table 4-27. Extent Factors................................................................................................................................ 73 Table 4-28. Vulnerability Factors ...................................................................................................................... 73 Table 4-29. Impact Factors............................................................................................................................... 73 Table 4-30. Climate Change Total Risk Score ................................................................................................. 75 Table 4-31. Dam Failure Types ................................................................................................................... 76 Table 4-32. High Hazard Dams in Contra Costa County.................................................................................. 78 Table 4-33. Additional Dams in Contra Costa County...................................................................................... 80 Table 4-34. Dams Outside of Contra Costa County ......................................................................................... 81 Table 4-35. Dams Within Jurisdiction in Contra Costa County with DSOD Downstream Hazard Potential Classifications ....................................................................................................................................................... 82 Table 4-36. Project Levees in Contra Costa County ........................................................................................ 83 Table 4-37. Non-Project Reclamation District Levees in Contra Costa County ............................................... 83 Table 4-38. USACE Dam Hazard Categories................................................................................................... 85 Table 4-39. DSOD’s Downstream Hazard Potential Classifications ................................................................ 86 Table 4-40. USACE Levee Safety Action Classification (LSAC) ................................................................ 86 Table 4-41. Dam and Levee Failure Past Events............................................................................................. 88 Table 4-42. Vulnerability and At Risk Population ............................................................................................. 90 Table 4-43. Critical Assets in Vulnerable to Dam Failure ................................................................................. 91 Table 4-44. Levee and Vulnerability in the Leveed Area.................................................................................. 91 Table 4-45. 25-Year Precipitation Projections for Contra Costa County .................................................... 98 Table 4-46. Future Climate Indicators for Contra Costa County ...................................................................... 98 Table 4-47. Probability of Occurrence ............................................................................................................ 100 Table 4-48. Extent Factors.............................................................................................................................. 100 Table 4-49. Vulnerability Factors .................................................................................................................... 100 Table 4-50. Impact Factors............................................................................................................................. 100 Table 4-51. Dam and Levee Failure Total Risk Score.................................................................................... 102 Table 4-52. Types of Drought ......................................................................................................................... 103 Table 4-53. Palmer Drought Severity Index.................................................................................................... 104 Table 4-54. U.S. Drought Monitor Classification ............................................................................................ 106 Table 4-55. Drought Annualized Frequency for Contra Costa County (FEMA National Risk Index) ............. 108 Table 4-56. Drought Past Events.................................................................................................................... 109 Table 4-57. 25-Year Climate Projections for Contra Costa County................................................................ 113 Table 4-58. Future Climate Indicators for Contra Costa County .................................................................... 114 Table 4-59. Probability of Occurrence ............................................................................................................ 115 Table 4-60. Extent Factors.............................................................................................................................. 115 Table 4-61. Vulnerability Factors .................................................................................................................... 115 Table 4-62. Impact Factors............................................................................................................................. 115 Table 4-63. Drought Expected Annual Loss (FEMA National Risk Index) ..................................................... 117 Table 4-64. Drought Risk Index (FEMA National Risk Index) ........................................................................ 117 Table 4-65. Drought Total Risk Score ............................................................................................................ 118 Table 4-66. Active Faults Within the Contra Costa County Area.................................................................... 120 Table 4-67. Modified Mercalli Scale vs. Richter Scale ................................................................................... 123 Table 4-68. Earthquake Warning California Alerting Thresholds ................................................................... 124 Table 4-69. Earthquake Probabilities for the San Francisco Bay Area (2014 – 2043)................................... 125 Table 4-70. Earthquake Annualized Frequency (FEMA National Risk Index)................................................ 126 Table 4-71. Earthquake Past Events Within or Near Contra Costa County (Magnitude 5.0 or Greater) .. 127 Table 4-72. Disability Characteristics (2022).................................................................................................. 128 Table 4-73. Vulnerability and At Risk Population ........................................................................................... 129 Table 4-74. Physical Housing Characteristics in Contra Costa County ......................................................... 130 Table 4-75. Critical Assets Vulnerable to Earthquakes .................................................................................. 131

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Table of Contents iii
Table 4-76. Probability of Occurrence ............................................................................................................ 133 Table 4-77. Extent Factors.............................................................................................................................. 133 Table 4-78. Vulnerability Factors .................................................................................................................... 133 Table 4-79. Impact Factors............................................................................................................................. 133 Table 4-80. Contra Costa County Population and Building Value Data ......................................................... 135 Table 4-81. Expected Building Damage by Occupancy ................................................................................. 135 Table 4-82. Expected Building Damage by Building Type ............................................................................. 136 Table 4-83. HAZUS Earthquake Expected Damage to Essential Facilities ................................................... 136 Table 4-84. Expected Damage to Utility Systems .......................................................................................... 137 Table 4-85. Expected Damage to the Transportation Systems...................................................................... 137 Table 4-86. Building Related Economic Loss Estimates (Millions of Dollars) ................................................ 138 Table 4-87. HAZUS Earthquake Transportation System Economic Losses (Millions of Dollars) .................. 139 Table 4-88. Earthquake Expected Annual Loss (FEMA National Risk Index)................................................ 140 Table 4-89. Earthquake Risk Index (FEMA National Risk Index)................................................................... 140 Table 4-90. Earthquake Total Risk Score....................................................................................................... 141 Table 4-91. Flood Types ........................................................................................................................... 142 Table 4-92. Contra Costa County Flooding Sources...................................................................................... 143 Table 4-93. NWS Flood Advisories................................................................................................................. 146 Table 4-94. NWS Flash Flood Impact Based Warnings ................................................................................. 146 Table 4-95. NWS River Flood Severity Categories ........................................................................................ 147 Table 4-96. Recurrence Intervals and Probabilities of Occurrences .............................................................. 147 Table 4-97. Riverine Flooding Annualized Frequency (FEMA National Risk Index)...................................... 147 Table 4-98. Contra Costa County Repetitive Loss and Severe Repetitive Loss Properties .......................... 149 Table 4-99. Flood Events (1950 – 2023) ........................................................................................................ 150 Table 4-100. Vulnerability and At Risk Population ........................................................................................... 155 Table 4-101. Critical Assets in the 100-Year and 500-Year Floodplains.......................................................... 156 Table 4-102. 25-Year Precipitation Projections for Contra Costa County .................................................. 159 Table 4-103. Future Climate Indicators for Contra Costa County .................................................................... 159 Table 4-104. Probability of Occurrence ............................................................................................................ 160 Table 4-105. Extent Factors.............................................................................................................................. 160 Table 4-106. Vulnerability Factors .................................................................................................................... 160 Table 4-107. Impact Factors............................................................................................................................. 161 Table 4-108. Contra Costa County Population and Building Value Data ......................................................... 163 Table 4-109. 100-Year Flood Expected Building Damage by Occupancy ....................................................... 163 Table 4-110. Expected Building Damage by Building Type ............................................................................. 164 Table 4-111. 100-Year Flood Expected Damage to Essential Facilities .......................................................... 164 Table 4-112. 100-Year Flood Building Related Economic Loss Estimates (Millions of Dollars) ...................... 165 Table 4-113. Riverine Flooding Expected Annual Loss (FEMA National Risk Index)...................................... 166 Table 4-114. Riverine Flooding Risk Index (FEMA National Risk Index)......................................................... 166 Table 4-115. Flooding Total Risk Score ........................................................................................................... 166 Table 4-116. Types of Slope Movement........................................................................................................... 167 Table 4-117. Types of Common Landslide ................................................................................................. 168 Table 4-118. USGS Landslide Advisories ........................................................................................................ 170 Table 4-119. Landslide Annualized Frequency (FEMA National Risk Index)................................................... 170 Table 4-120. Significant Landslide Events........................................................................................................ 171 Table 4-121. Vulnerability and At Risk Population ........................................................................................... 173 Table 4-122. Critical Assets Vulnerable to Landslides ..................................................................................... 174 Table 4-123. 25-Year Climate Projections for Contra Costa County .......................................................... 176 Table 4-124. Probability of Occurrence ............................................................................................................ 177 Table 4-125. Extent Factors.............................................................................................................................. 177 Table 4-126. Vulnerability Factors .................................................................................................................... 177 Table 4-127. Impact Factors............................................................................................................................. 177 Table 4-128. Landslide Expected Annual Loss (FEMA National Risk Index)................................................... 179 Table 4-129. Landslide Risk Index (FEMA National Risk Index)...................................................................... 179 Table 4-130. Landslide Total Risk Score.......................................................................................................... 180

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Table of Contents iv
Table 4-131. Projected Sea Level Rise for San Francisco............................................................................... 183 Table 4-132. Probability that Sea level Rise Will Meet or Exceed a Particular Height in San Francisco (High Emissions – RCP 8.5)............................................................................................................................................ 185 Table 4-133. Probability that Sea level Rise Will Meet or Exceed a Particular Height in San Francisco (Low Emissions – RCP 2.6)............................................................................................................................................ 185 Table 4-134. Coastal Flooding Annualized Frequency (FEMA National Risk Index)....................................... 185 Table 4-135. Vulnerability and At Risk Population ........................................................................................... 186 Table 4-136. Critical Assets in Vulnerable to 1 Foot of Sea Level Rise ........................................................... 188 Table 4-137. Probability of Occurrence ............................................................................................................ 191 Table 4-138. Extent Factors.............................................................................................................................. 191 Table 4-139. Vulnerability Factors .................................................................................................................... 191 Table 4-140. Impact Factors............................................................................................................................. 191 Table 4-141. Coastal Flooding Expected Annual Loss (FEMA National Risk Index)....................................... 193 Table 4-142. Coastal Flooding Risk Index (FEMA National Risk Index) .......................................................... 193 Table 4-143. Sea Level Rise Total Risk Score................................................................................................. 194 Table 4-144. Hail Speed Estimates .................................................................................................................. 195 Table 4-145. Types of Strong Winds ................................................................................................................ 196 Table 4-146. Types of Tornadoes..................................................................................................................... 197 Table 4-147. Converting Traditional Hail Size Descriptions ............................................................................. 202 Table 4-148. Beaufort Wind Scale.................................................................................................................... 203 Table 4-149. Enhanced Fujita Scale................................................................................................................. 204 Table 4-150. NWS HeatRisk Categories .......................................................................................................... 204 Table 4-151. Atmospheric River Scale ............................................................................................................. 205 Table 4-152. NWS Severe Weather Advisories................................................................................................ 205 Table 4-153. NWS Excessive Heat Advisories................................................................................................. 206 Table 4-154. Hail Annualized Frequency (FEMA National Risk Index)............................................................ 207 Table 4-155. Strong Wind Annualized Frequency (FEMA National Risk Index) .............................................. 207 Table 4-156. Tornado Annualized Frequency (FEMA National Risk Index)..................................................... 207 Table 4-157. Heat Wave Annualized Frequency (FEMA National Risk Index) ................................................ 208 Table 4-158. Strong Winds Events (1950 – 2023) ........................................................................................... 208 Table 4-159. Tornado Events (1950 – 2023).................................................................................................... 212 Table 4-160. Heavy Rainfall Past Events ......................................................................................................... 213 Table 4-161. Heat Events (1950 – 2023).......................................................................................................... 214 Table 4-162. Vulnerability and At Risk Population ........................................................................................... 218 Table 4-163. Critical Assets Vulnerable to Severe Weather ............................................................................ 220 Table 4-164. Probability of Occurrence ............................................................................................................ 223 Table 4-165. Extent Factors.............................................................................................................................. 223 Table 4-166. Vulnerability Factors .................................................................................................................... 224 Table 4-167. Impact Factors............................................................................................................................. 225 Table 4-168. Hail Expected Annual Loss (FEMA National Risk Index)............................................................ 228 Table 4-169. Strong Wind Expected Annual Loss (FEMA National Risk Index) .............................................. 228 Table 4-170. Tornado Expected Annual Loss (FEMA National Risk Index)..................................................... 228 Table 4-171. Riverine Flooding Expected Annual Loss (FEMA National Risk Index)...................................... 229 Table 4-172. Heat Wave Expected Annual Loss (FEMA National Risk Index) ................................................ 229 Table 4-173. Hail Risk Index (FEMA National Risk Index)............................................................................... 229 Table 4-174. Strong Wind Risk Index (FEMA National Risk Index) ................................................................. 230 Table 4-175. Tornado Wind Risk Index (FEMA National Risk Index) .............................................................. 230 Table 4-176. Riverine Flooding Risk Index (FEMA National Risk Index)......................................................... 230 Table 4-177. Heat Wave Risk Index (FEMA National Risk Index) ................................................................... 230 Table 4-178. Severe Weather Total Risk Score ............................................................................................... 231 Table 4-179. Papadopoulos and Imamura Tsunami Scale .............................................................................. 234 Table 4-180. National Tsunami Warning Center Alerts .................................................................................... 236 Table 4-181. Tsunami Annualized Frequency (FEMA National Risk Index) .................................................... 236 Table 4-182. Tsunami Events (1950 – 2023) ................................................................................................... 237 Table 4-183. Vulnerability and At Risk Population ........................................................................................... 238

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Table 4-184. Critical Assets Vulnerable to Tsunami......................................................................................... 240 Table 4-185. Probability of Occurrence ............................................................................................................ 242 Table 4-186. Extent Factors.............................................................................................................................. 242 Table 4-187. Vulnerability Factors .................................................................................................................... 242 Table 4-188. Impact Factors............................................................................................................................. 242 Table 4-189. Tsunami Expected Annual Loss (FEMA National Risk Index) .................................................... 244 Table 4-190. Tsunami Risk Index (FEMA National Risk Index) ....................................................................... 244 Table 4-191. Tsunami Total Risk Score ........................................................................................................... 245 Table 4-192. Types of Wildfires ........................................................................................................................ 246 Table 4-193. Air Quality Index for Ozone and Particle Pollution ...................................................................... 249 Table 4-194. National Weather Service Fire Advisories................................................................................... 249 Table 4-195. Wildfire Annualized Frequency (FEMA National Risk Index)...................................................... 250 Table 4-196. Wildfire Events (1950 – 2023) ..................................................................................................... 250 Table 4-197. Critical Assets in Vulnerable to Wildfire....................................................................................... 255 Table 4-198. 25-Year Climate Projections for Contra Costa County................................................................ 257 Table 4-199. Future Climate Indicators for Contra Costa County .................................................................... 258 Table 4-200. Probability of Occurrence ............................................................................................................ 259 Table 4-201. Extent Factors.............................................................................................................................. 259 Table 4-202. Vulnerability Factors .................................................................................................................... 259 Table 4-203. Impact Factors............................................................................................................................. 259 Table 4-204. Wildfire Expected Annual Loss (FEMA National Risk Index)...................................................... 261 Table 4-205. Wildfire Risk Index (FEMA National Risk Index) ......................................................................... 261 Table 4-206. Wildfire Total Risk Score ............................................................................................................. 262 Table 4-207. Common Types of Cyberattacks ................................................................................................. 264 Table 4-208. Counterterrorism Objectives........................................................................................................ 265 Table 4-209. Cybersecurity Total Risk Score ................................................................................................... 268 Table 4-210. Hazardous Materials Incident Types ........................................................................................... 269 Table 4-211. Hazardous Materials Incidents (Reported to CalOES)................................................................ 271 Table 4-212. Hazardous Materials Incidents Total Risk Score......................................................................... 273 Table 4-213. Utility Interruption Past Events .................................................................................................... 276 Table 4-214. Utility Interruptions Total Risk Score ........................................................................................... 277 Table 4-215. Active Shooter Total Risk Score.................................................................................................. 280 Table 4-216. Terrorism Total Risk Score.......................................................................................................... 283 Table 5-1. Contra Costa County Mitigation Goals and Objectives ................................................................... 284 Table 5-2. Contra Costa County Mitigation Actions Summary ......................................................................... 286 Table 5-3. Mitigation Action Estimated Cost Parameters ................................................................................. 287 Table 5-4. Mitigation Action Benefits Parameters............................................................................................. 287 Table 5-5. Mitigation Action Project Duration Parameters ................................................................................ 287 Table 5-6. Existing Mitigation Action Priority Parameters ................................................................................. 288 Table 5-7. STAPLEE+E Method ....................................................................................................................... 288 Table 5-8. New Mitigation Action Priority Parameters ...................................................................................... 290 Table 6-1. Five-Year Action Plan ...................................................................................................................... 296 Table 6-2. Contra Costa County Mitigation Actions Summary ......................................................................... 298

LIST OF FIGURES
Figure 3-1. Contra Costa County Planning Area ............................................................................................. 14 Figure 3-2. Topographical Map........................................................................................................................ 16 Figure 3-3. Land Use Map ............................................................................................................................... 19 Figure 3-4. Existing Development in Unincorporated Contra Costa County Flood Zones ......................... 21 Figure 3-5. Impacted Communities.................................................................................................................. 26 Figure 3-6. Critical Infrastructure in Contra Costa County............................................................................... 29 Figure 4-1. Global Temperature Trends (1993 – 2022) ............................................................................. 63 Figure 4-2. Projected Annual Global Carbon Emissions ................................................................................. 65 Figure 4-3. Projected Global Temperatures..................................................................................................... 65

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Figure 4-4. Temperature and Atmospheric CO2 Variation the Past 400,000 Years ........................................ 67 Figure 4-5. Global Average Surface Temperature (1880 – 2022) ................................................................... 67 Figure 4-6. High and Significant Hazard Dams in the Contra Costa County Area .......................................... 80 Figure 4-7. Dams Inundation Areas in the Contra Costa County Area............................................................ 81 Figure 4-8. Levee Systems in Contra Costa County Area............................................................................... 84 Figure 4-9. Palmer Drought Severity Index Map (March 2024)..................................................................... 105 Figure 4-10. California U.S. Drought Monitor (April 9, 2024)........................................................................... 107 Figure 4-11. U.S. Drought Monitor for Contra Costa County ..................................................................... 108 Figure 4-12. Faults Located in the San Francisco Bay Region ....................................................................... 121 Figure 4-13. Earthquake History in Contra Costa County Area....................................................................... 122 Figure 4-14. USGS National Seismic Hazard Map.......................................................................................... 126 Figure 4-15. Contra Costa County Floodplain ................................................................................................. 145 Figure 4-16. Landslide Susceptibility in Contra Costa County......................................................................... 169 Figure 4-17. Expected Sea Level Rise 2050 Projection .................................................................................. 182 Figure 4-18. Expected Sea Level Rise 2100 Projection .................................................................................. 183 Figure 4-19. National Weather Service Heat Index Chart ............................................................................... 198 Figure 4-20. Contra Costa County Hail History (1950 – 2023)........................................................................ 199 Figure 4-21. Contra Costa County Strong Wind History (1950 – 2023) .......................................................... 200 Figure 4-22. Contra Costa County Tornado History (1950 – 2023)................................................................. 201 Figure 4-23. SPC Severe Thunderstorm Outlook Categories ......................................................................... 202 Figure 4-24. Contra Costa County Tsunami Hazard Areas ............................................................................. 233 Figure 4-25. Contra Costa County Fire Hazard Severity Zones ...................................................................... 247 Figure 4-26. Contra Costa County Wildland-Urban Interface.......................................................................... 248 Figure 4-27. Contra Costa County Historic Wildfire Perimeters ...................................................................... 252

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Executive Summary 1

EXECUTIVE SUMMARY
The Contra Costa County Hazard Mitigation Plan (the Plan) was developed to guide Contra Costa County in a risk-based approach to become more resilient to the impacts of natural and technological hazards through mitigation planning. The Plan identifies potential hazards that could negatively impact County operations and assesses the risk and vulnerability of life safety and County assets for each hazard. This Plan also establishes strategies and priorities to mitigate risk from natural, human-caused, and technological hazards, identifies specific mitigation projects to pursue for each identified hazard, guides the County in associated risk management activities, and establishes eligibility for future mitigation program funds. The development of this Plan was a collaborative effort among the Contra Costa County Core Planning Team and Steering Committee with support from Integrated Solutions Consulting (ISC).

The five (5) goals for this Plan, identified by the Contra Costa County Steering Committee, are listed below. The goals represent the County’s long term and strategic vision to accomplish and achieve successful mitigation efforts. Additionally, the Steering Committee identified 19 objectives which are specific strategies and steps identified to assist the communities in attaining the listed goals.

Goals
1 Save (or protect) lives and reduce injury.
2 Increase resilience of infrastructure and critical facilities. 3 Avoid (minimize or reduce) damage to property.
4 Encourage the development and implementation of long-term, cost-effective, and environmentally sound mitigation projects.
5 Build and support capacity to enable local government and the public to prepare for, respond to and recover from the impact of natural hazards.

There are a number of hazards that pose a threat to human life, health, and well-being, and this Plan is not meant to compile an exhaustive list. Contra Costa County identified 10 natural hazards and five (5) human-caused/technological hazards for this Plan. Although FEMA only requires and reviews natural hazards in hazard mitigation plans, Contra Costa County decided to rank and mitigate against a comprehensive list of hazard events that could impact the County. Due to the nature of non-natural hazards and the discretionary status regarding their inclusion, the following hazards of interest have been briefly and qualitatively assessed for the sake of public education and informing their inclusion within the hazard ranking and mitigation process. Hazards that have been identified as significant in Contra Costa County and that will be considered in this Plan are listed below.

Identified Hazards
Natural Hazards
Climate Change
Dam and Levee Failure
Drought
Earthquake
Flood

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Executive Summary 2
Identified Hazards
Landslide
Sea Level Rise (Coastal Flooding)
Severe Weather (Severe Thunderstorms – Hail, Strong Winds, Tornadoes – Heavy Rainfall, Heat Wave/Extreme Heat) Tsunami
Wildfire
Human-Caused/Technological Hazards
Cybersecurity Threats
Hazardous Materials Incidents
Utility Interruptions
Active Shooter Incidents
Terrorism (Weapons of Mass Destruction)
The following key elements are included in the 2024 Contra Costa County Hazard Mitigation Plan.

Planning Process: The Core Planning Team, Steering Committee, and planning process are described and documented.

Community Profile: Demographics (including underserved population), social, and economic data, as well as existing and future land use descriptions, are updated to reflect the status of Contra Costa County and its jurisdictions.

Hazard Risk Assessment: Outlines the process of measuring the potential loss of life, personal injury, economic injury, and property damage resulting from natural hazards. In this section, the process focuses on the following elements – hazard identification, vulnerability identification, and cost evaluation.

Mitigation Strategy: The mitigation strategy describes how the community will accomplish the overall purpose of the planning process. In this section, mitigation goals and objectives were reevaluated and updated; and mitigation actions were updated, identified, evaluated, and prioritized.

Plan Maintenance: The Hazard Mitigation Plan requires monitoring, evaluation, and updating every five (5) years. This section includes a schedule for annual monitoring and evaluation of the programmatic outcomes established in the Plan and for producing a formal Plan revision every five (5) years.

Appendices: Includes the Contra Costa County’s mitigation actions, stakeholder and public engagement details and supporting documentation, and the plan adoption.

Annexes: This Plan includes 40 plan participants – 16 municipalities and 24 special districts – and each jurisdiction developed its own annex. All jurisdiction specific information and supporting documentation (e.g., hazard vulnerability and impacts, mitigation actions, stakeholder and public engagement) can be found in the respective annexes.

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CHAPTER 1. INTRODUCTION
The Contra Costa County Hazard Mitigation Plan (Plan) was developed to guide the County in a riskbased approach to become more resilient to the impacts of natural, human-caused, and technological hazards through mitigation planning. The Plan documents historical disasters, assesses probabilistic disasters through Hazus and GIS analysis, and addresses specific strategies to mitigate the potential impacts of these disasters.

This five (5) year update was a collaborative effort among the Contra Costa County Core Planning Team.

The Plan accomplishes the following:

Identifies areas of risk and assesses the probability, extent, vulnerability, and impacts for each natural hazard.

Establishes strategies and priorities to mitigate risk from natural hazards.

Identifies specific mitigation projects to pursue for each identified natural hazard.

Guides the communities in their risk management activities and minimizes conflicts among agencies.

Establishes eligibility for future mitigation program funds.

1.1 PURPOSE OF THE PLAN
The Plan identifies activities that can be undertaken by both the public and private sectors to reduce risk to natural, human-caused, and technological hazards, property damage, and economic disruption caused by these hazards. This Plan reviews mitigation activities and selects those that will be most beneficial for Contra Costa County.

The Federal Disaster Mitigation Act of 2000 requires jurisdictions to develop and maintain a Hazard Mitigation Plan to remain eligible for certain Federal disaster assistance and hazard mitigation funding programs (e.g., Hazard Mitigation Grant Program, Building Resilient Infrastructure and Communities).

Renewal of the Plan every five (5) years is required to encourage continual awareness of mitigation strategies. Additionally, communities that participate in the Federal Emergency Management Agency (FEMA) Community Rating System (CRS), a voluntary program that reduces National Flood Insurance Program (NFIP) premiums and are designated as a Category C repetitive loss community, must prepare a Floodplain Management Plan (FMP) or a Repetitive Loss Area Analysis (RLAA). However, the CRS Program allows multi-hazard and multi-jurisdictional mitigation plans to fulfill this requirement.

This Plan fulfills the federal requirements for mitigation funding outlined in 44 Code of Federal Regulations (CFR), section 201.6 (44 CFR § 201.6) and United States Code (USC) 42, section 5165 (42 USC § 5165), the CRS Program and provides the jurisdiction with a blueprint for reducing the impacts of natural, humancaused, and technological hazards.

1.2 HAZARD MITIGATION PROGRAM
Hazard mitigation is defined as any sustainable action taken to reduce or eliminate long-term risk to people and property from future disasters. Mitigation planning breaks the cycle of disaster damage, reconstruction, and repeated damage. Hazard mitigation includes long-term solutions that reduce the impact of disasters in the future.

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Keep the hazards away from people, property, and structures.

Keep people, property, or structures away from the hazard.

Reduce the impact of the hazards on victims (e.g., insurance).

1.3 PLANNING AREA
The planning area was defined to consist of the unincorporated county, 16 incorporated jurisdictions (i.e., cities and towns), and 24 special districts within the geographical boundary of Contra Costa County. All partners to this Plan have jurisdictional authority within this planning area.

All incorporated jurisdictions were invited to participate in the planning process. The cities of Pittsburg and Concord declined participation because each city has a FEMA-approved Hazard Mitigation Plan.

Additionally, the City of Antioch opted to not participate in this Hazard Mitigation Plan. Therefore, the cities of Antioch, Concord, and Pittsburg are not included as participating jurisdictions in this Plan. For countywide interest and statistical purposes, some Antioch, Concord, and Pittsburg demographics, and hazard-related data are included in this Plan. The intent of this inclusion is to create a more informative plan regarding the hazards, risks, and vulnerabilities across all of Contra Costa County.

1.4 PARTICIPATING JURISDICTIONS
All participating jurisdictions (i.e., cities, towns, and special districts) listed in Table 1-1 were represented by one (1) or more representatives. Responsibilities for each of the participating jurisdiction’s representatives included the following:

Assist with gathering the appropriate data and historical information.

Complete the community preparedness survey.

Participate in their jurisdiction’s hazard analysis.

Identify new mitigation actions.

Update existing mitigation actions.

Participate in workshops, mitigation meetings, and webinars.

Review draft documents, as necessary.

Contact information for each of the representatives and documentation of participation in the Plan update are available in Appendix B. The County also invited key organizations to assist and review the plan update process; supporting documentation is available in Appendix C.

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Table 1-1. Participating Jurisdictions
Cities, Towns, and Unincorporated Contra Costa County
Contra Costa County City of Lafayette City of Pleasant Hill City of Brentwood City of Martinez City of Richmond
City of Clayton Town of Moraga City of San Pablo
Town of Danville City of Oakley City of San Ramon
City of El Cerrito City of Orinda City of Walnut Creek
City of Hercules City of Pinole
Special Districts
Bethel Island Municipal
Improvement District Kensington Fire Protection District Reclamation District No. 2065 (Veale Tract) Central Contra Costa Sanitary
District
Kensington Police Protection and
Community Services District
Reclamation District No. 2122
(Winter Island)
Contra Costa County Fire
Protection District Mt. View Sanitary District Reclamation District No. 2137 Contra Costa County Flood Control
and Water Conservation District
Pleasant Hill Parks and Recreation
District
Rodeo-Hercules Fire Protection
District
Contra Costa Water District Reclamation District No. 799 (Hotchkiss Tract)
San Ramon Valley Fire Protection
District
Delta Diablo Reclamation District No. 830
(Jersey Island)
San Ramon Valley Unified School
District
Diablo Water District Reclamation District No. 2025
(Holland Tract)
Town of Discovery Bay Community
Services District
Ironhouse Sanitary District Reclamation District No. 2026 (Webb Tract) West County Wastewater District

1.5 PLAN PARTICIPATION
Updating this Plan involved assistance in identifying and evaluating hazards and mitigation actions from five (5) main groups – Core Planning Team, Steering Committee, representatives from County jurisdictions, members of the public, and other stakeholders.

1.5.1. Core Planning Team
The Core Planning Team consisted of key members from the Contra Costa County Office of Emergency Services (OES) and staff from Integrates Solutions Consulting (ISC). The Core Planning Team also served on the Steering Committee and helped guide the planning process. Table 1-2 lists the Core Planning Team members from Contra Costa County OES.

Table 1-2. Core Planning Team Members
Name Title Jurisdiction/Organization
Rick Kovar Emergency Services Manager Contra Costa County Office of Emergency Services
Beatriz Portillo Senior Emergency Planning
Coordinator
Contra Costa County Office of
Emergency Services
Lorena Herrera Senior Emergency Planning
Coordinator
Contra Costa County Office of
Emergency Services

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Name Title Jurisdiction/Organization
Jennifer Cannon Senior Emergency Planning
Coordinator
Contra Costa County Office of
Emergency Services

1.5.2. Steering Committee
Hazard mitigation planning enhances collaboration and support among diverse parties whose interests can be affected by hazard losses. A Hazard Mitigation Steering Committee (the Steering Committee) was formed to oversee all phases of the planning process.

Throughout this Plan update, the Steering Committee agreed to meet as often as needed through the planning process. The Core Planning Team facilitated each meeting, which addressed a set of objectives based on the work plan established. All members of the Steering Committee were actively involved in attending meetings and responsible for the following:

Identifying and prioritizing natural, human-caused, and technological hazards that impact Contra Costa County.

Defining and identifying critical facilities.

Identifying the Plan’s goals and objectives.

The planning area’s capability assessment and consideration of mitigation alternatives.

Identifying and prioritizing mitigation actions and projects.

Coordinating and conducting outreach with key stakeholders, planning partners, and the public.

The Steering Committee members are listed on Table 1-3 and the Steering Committee Meetings sign-in sheets are available in Appendix B.

Table 1-3. Hazard Mitigation Steering Committee Members Name Title Jurisdiction/Organization
Beatriz Portillo Senior Emergency Planning
Coordinator
Contra Costa County Office of
Emergency Services
Brian Helmick Deputy Fire Chief Contra Costa County Fire Protection District
Carol McCray AFN Co-Coordinator VistAbility
Daniel Barrios Senior Planner Department of Conservation and Development
Gilbert Salinas Chief Equity Officer Contra Costa Health (DEI) Glenn Kimball Community & Media Relations
Specialist
Contra Costa County Office of
Communication and Media
Jeff Valeros Senior Civil Engineer Contra Costa Public Works Jody London Sustainability Coordinator Department of Conservation and Development
Kristi Jourdan Director Contra Costa County Office of
Communication and Media
Larry Fong Volunteer American Red Cross, Contra Costa
Search and Rescue, and CERT

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Name Title Jurisdiction/Organization
Lissette Davis Community & Media Relations
Specialist
Contra Costa County Office of
Communication and Media
Lorena Herrera Senior Emergency Planning
Coordinator
Contra Costa County Office of
Emergency Services
Rick Kovar Emergency Services Manager Contra Costa County Office of Emergency Services
Robyn Cole Emergency Services Coordinator
California Office of Emergency
Services - Coastal Region
Response Ops
Seana Fields Senior Planner (Community
Development) City of Hercules
Thomas Rossberg Lieutenant Contra Costa County Office of the Sheriff

1.5.3. Local Planning Teams and Community Representatives Each of the participating jurisdictions identified representatives to serve on their Local Planning Teams.

The Local Planning Teams were instrumental in identifying community-specific risks/hazards and identifying and prioritizing mitigation actions that would reduce the costs of disaster response and recovery, protect people and infrastructure, and minimize overall disruption to their respective communities in the event of a disaster.

1.5.4. Supporting Organizations
Throughout the planning process, key stakeholders, departments, and community organizations, including local community organizations that provide support to underserved communities, were involved in providing key input, data, disseminating information about the Plan, survey, meetings, and reviewing the draft of the Plan (i.e., public comment period). Details regarding stakeholder engagement throughout the planning process and a list of stakeholders can be found in Appendix B.

1.6 PLAN APPROVAL AND ADOPTION
The Plan presents a comprehensive description of Contra Costa County’s commitment to significantly reduce or eliminate the potential impacts of disasters through planning and mitigation. Adoption by the local governing body within the State of California legitimizes the Plan and authorizes Contra Costa County and its jurisdictions to implement mitigation responsibilities and activities.

A hazard mitigation plan must document that it has been formally adopted by the governing bodies of the jurisdictions requesting federal approval of the plan (44 CFR Section 201.6(c)(5)). For multi-jurisdictional plans, such as this, each jurisdiction requesting approval must formally adopt the Plan. This Plan will be submitted for a pre-adoption review to Cal OES and FEMA Region IX prior to adoption. Once preadoption approval has been provided, all participating jurisdictions will formally adopt the Plan. Federal Disaster Mitigation Act of 2000 compliance and its benefits cannot be achieved until the Plan is adopted.

Copies of the resolutions adopting this Plan for all planning partners can be found in Appendix D.

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CHAPTER 2. PLANNING PROCESS
The Contra Costa County Hazard Mitigation Plan was developed to provide a basis for identifying and managing natural, human-caused, and technological hazards, and to meet federal, state, and local requirements for hazard mitigation and FEMA mitigation grant funding.

Updating this Plan began with an initial kick-off meeting with the Contra Costa County Office of Emergency Services (OES) on September 7, 2023. Following this meeting, a series of Stakeholder and Jurisdiction Introductory Webinars were held on September 25 and 27, 2023, and October 3 and 4, 2023.

The main purpose of these webinars was to provide information regarding FEMA’s Hazard Mitigation Program directive and how participating in this Plan will enable jurisdictions (i.e., cities, towns, and special districts) to become eligible for FEMA hazard mitigation grant programs. Furthermore, the planning process involved the following:

Review of the existing Plan.

Updating Contra Costa County’s hazard history.

Gathering information on local hazards from individual communities.

Gathering input on hazard priorities.

Identifying specific vulnerabilities and desired mitigation strategies.

Evaluating the previous Plan goals, objectives, and mitigation strategies.

Determining the status of previous mitigation strategies and action plans.

Identifying Repetitive Loss and Severe Repetitive Loss properties.

Facilitating the activities of the Steering Committee.

Conducting multiple public meetings and outreach activities.

Information regarding Contra Costa County’s hazards and applicable mitigation strategies was obtained through two (2) Stakeholder Workshops held in the Contra Costa County Emergency Operations Center on December 4 and 6, 2023. Additionally, a comprehensive public survey reached 1,894 residents and resulted in 1,387 completed responses.

The 2024 Contra Costa County Hazard Mitigation Questionnaire (i.e., Public Survey) was available in English, Spanish, Traditional Chinese, Simplified Chinese, and Tagalog. The English and Spanish survey opened on October 19, 2023. While the Traditional Chinese, Simplified Chinese, and Tagalog opened on November 15, 2023. As part of this survey, Steering Committee members, community representatives, and members of the public were asked to rate each of the hazards in terms of perceived risk.

Furthermore, they were asked to rate “mitigation importance” for each of the identified hazards in the Plan. The information gathered from this survey was used to inform the hazard risk prioritization process, and to ensure the Plan adequately addressed the public’s concerns and priorities. Three (3) Public Meetings were held throughout the County on December 4, 5, and 6, 2023. These meetings were advertised for residents to have an opportunity to provide input into the Plan. Additionally, a draft of the Plan was made available on the Contra Costa County OES website for public review and comment from April 22, 2024, through May 31, 2024.

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The purpose of the two (2) Stakeholder Workshops was to ensure local jurisdictions had the opportunity to identify their community’s risks and identify/update their mitigation strategies and priorities. These Workshops included local planning team members from each city, town, and special district. Participants validated the County’s risk assessment findings, described specific hazard risks and concerns for their communities, updated existing mitigation actions/strategies from the 2018 Plan, and worked with their local planning teams to identify new mitigation initiatives. Through a combination of ranking exercises, worksheets, and discussions, workshop participants evaluated hazard risk results, action plans, and rankings; and selected options for mitigating specific hazards to be included in the 2024 Plan update.

In summary, the planning process consisted of the following key tasks:

Task 1: Organize Resources
Contra Costa County OES created a Core Planning Team to attend meetings, gather data and historical information, review drafts, and participate in mitigation brainstorming sessions. Additionally, a Steering Committee was formed to provide overall guidance and direction throughout the mitigation planning process. A series of Steering Committee meetings were held throughout the Plan update process.

Participating jurisdictions were invited to form Local Planning Teams to ensure their jurisdiction’s mitigation needs and priorities were addressed. Refer to Plan Participation under Chapter 1 (Introduction) for a list of Core Planning Team and Steering Committee members.

Task 2: Risk Assessment
The Core Planning Team identified the hazards to include in this Plan, as well as hazard profiles to address the probability, extent, vulnerabilities, and impacts associated with each hazard. Furthermore, the Team used local resources to inventory Contra Costa County’s assets and estimated losses. The Core Planning Team and Steering Committee provided input and subject matter expertise throughout this process.

Task 3: Public Involvement and Participation
The public was given an opportunity to be involved throughout the planning process via a public survey, in-person and virtual public meetings, and public engagement activities to review the Plan draft. The public was invited to attend one (1) of three (3) Public Meetings to review the risk assessment results and discuss mitigation strategies. The Public Meetings were conducted in person with options to attend virtually and were advertised locally in advance. A comprehensive Public Survey that reached 1,895 residents and resulted in 1,387 completed responses, up until January 30, 2024, was also conducted.

The survey results were used to inform the hazard risk prioritization process and to ensure the Plan adequately addresses the public’s concerns and priorities. The complete survey and a summary of its findings can be found in Appendix C. Once the draft Plan was completed, the public was given an opportunity to review and provide comments on Volume 1 (Planning Area-wide Elements) and each of the jurisdiction annexes. The public comment period began on April 22, 2024. Each plan participant developed a public outreach strategy to engage stakeholders and the public during the public comment period. Further details on public engagement and participation along with supporting documentation can be found in Appendix C. Public engagement participation and supporting documentation for each plan participant can be found in their respective annexes.

To further facilitate continued public involvement in the planning process, the public will have an opportunity to provide continual feedback and input. As future needs and concerns arise, or if the public would like to provide feedback regarding the latest version of the Contra Costa County Hazard Mitigation Plan, the public is invited to use the form provided on the County’s website to provide comments.

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Task 4: Develop Mitigation Strategies
The Core Planning Team met with representatives from each community (Local Planning Team) to develop and prioritize mitigation strategies and actions items that would reduce the costs of disaster response and recovery, protect people and infrastructure, and minimize overall disruption to the County in the event of a disaster. A list of mitigation actions for each plan participant can be found in their respective annexes.

Task 5: Complete the Plan
The Core Planning Team compiled all the relevant sections of the Plan to produce a Draft Plan for review.

Contra Costa County stakeholders, which include members of the public, had multiple opportunities to review and revise the Plan before submitting it to the California Office of Emergency Services and FEMA for review.

Task 6: Plan Adoption
Contra Costa County OES coordinated the effort to ensure the Approvable Pending Adoption (APA) was formally adopted by each participating jurisdiction (i.e., city, town, and special district) and that at least one (1) jurisdiction adopted the Plan within one (1) year of the APA notification from FEMA.

Updating this Plan involved assistance in identifying and evaluating hazards and mitigation options from five (5) key groups – Core Planning Team, Steering Committee, local planning teams from the participating jurisdictions/districts, members of the public, and other stakeholders.

2.1 REVIEW OF EXISTING PROGRAMS AND PLANS
Since a Hazard Mitigation Plan is only a part of the emergency planning, mitigation, preparedness, response, and recovery process, a second objective of the planning process was to coordinate Plan preparation with existing Contra Costa County emergency plans, programs, procedures, and organizations. The following programs can affect mitigation within the planning area:

California Fire Code
The California Fire Alliance
California Building Code
California State Hazard Mitigation Forum
Adapting to Rising Tides
Contra Costa County Climate Action Plan
Local Capital Improvement Programs
Local Emergency Operations Plans
Local General Plans
o Housing Element
o Safety Element
Local Zoning Ordinances
Local Coastal Program Policies

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An assessment for each jurisdiction’s capabilities that can contribute to the reduction of long-term vulnerabilities to hazards are addressed in their respective annexes. It should be noted that this Plan does not replace any existing plans or programs but is intended to provide a reference on hazard mitigation to be used in planning and program development.

2.2 EQUITY CONSIDERATION FOR THE UNDERSERVED POPULATION Some disasters occur on larger scales and are more impacted by built environments and are most likely to continually impact those most at risk because of existing health conditions, lack of resources, being underserved by past mitigation planning work, facing historical disinvestment in their communities, or other factors. In this case, people in widely different locations can be the most harmed by repeating disaster cycles, so mitigation strategies should also work to break cycles of loss caused by social and economic disparities. Hazard mitigation strategies can reduce existing risk by, for example, relocating a building out of an area that frequently floods. In each case, an attempt has been made to lessen the harm of a future flood before the event happens. Strategies may also seek to make future development less vulnerable to hazards at the time it is built. Examples would be requiring new structures to be elevated above predicted flood levels or building structures to better withstand future hazards. Hazard mitigation plans are designed to involve the input of stakeholders from different perspectives to ensure plans use the best available data, are aligned with the needs of the entire community, and are in alignment with other plans, such as general plans, capital improvement plans, and climate action plans.

The Contra Costa County Hazard Mitigation Plan recognizes that all members of the community are not impacted in the same way by natural, human-caused, and technological disasters. Some community members are at more risk, for a number of possible reasons. A mitigation strategy that uses a ‘one size fits all’ approach and does not recognize different levels of risk will not adequately or efficiently support historically underserved populations and can actually make inequalities worse after a disaster.

This Plan highlights equity as a key component of the Plan’s overall vision and seeks to continue to develop a shared understanding among participants of how hazard mitigation can be made more inclusive and be proactive in creating strategies that reduce existing disparities in risk and hazard recovery. Addressing the whole community requires an understanding that while a single solution for all seems fair, it does not address historical inequalities and current differences in age, financial resources, housing stability, neighborhood investment, health or ability, and access to government services. In mitigation planning, this means that successfully reducing risk in the most meaningful and efficient way requires understanding how the distribution of resources will actually reduce risk and for whom.

Equitable mitigation success should be measured by assessing who was most impacted in loss of life or financial harm by past and future disasters, quantifiable reductions of vulnerability to those most at risk, and increasing engagement with historically underserved populations and community organizations to better understand how plans and processes and natural hazard events are affecting different communities. The following highlights how this Plan addresses this priority.

Chapter 3 (Community Profile): This section describes different demographic and economic factors in Contra Costa County. Additionally, Centers for Disease Control and Prevention (CDC) Social Vulnerability Index (SVI) data was included.

Chapter 4 (Hazard Identification and Risk Assessment): This section includes FEMA’s National Risk Index scores for the County for social vulnerability and community resilience. Social vulnerability is defined as the susceptibility of social groups to the adverse impacts of natural hazards, including

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disproportionate death, injury, loss, or disruption of livelihood. 1 Community resilience is defined as the ability of a community to prepare for anticipated natural hazards, adapt to changing conditions, and withstand and recover rapidly from disruptions. 2 Additionally, it includes a hazard ranking methodology that specifically assessed the impact of the hazard on underserved populations. Furthermore, each hazard profile includes a narrative of the vulnerability and impacts for the underserved and at-risk population, FEMA’s Expected Annual Loss analysis, and the National Risk Index score for the County.

The Risk Index score is based on the following components: Social Vulnerability, Community Resilience, and Estimate Annual Loss (based on Exposure, Annualized Frequency, and Historic Loss Ratio (HLR) factors, for a total of five (5) risk factors). 3
Under the Climate Change hazard profile in Chapter 4 (Hazard Identification and Risk Assessment), it includes an analysis of the 42 Census Tracts in Contra Costa County which are identified as disadvantaged by the United States Council on Environmental Quality (ACEQ). According to the ACEQ, a disadvantaged community is identified if is located in a Census Tract that is at or above the threshold for one (1) or more environmental, climate, or other burdens, and at or above the threshold for associated socioeconomic burdens, including poverty and language barriers. 4 Mitigation goals were updated to encourage greater participation and engagement from underserved populations and groups and aligns with the Contra Costa County General Plan, which prioritizes diversity, inclusion, and equity. During Stakeholder Workshops, in which new and ongoing mitigation strategies were discussed, jurisdictional representatives were encouraged to consider how the mitigation actions directly and/or indirectly resulted in equitable outcomes.

During this Plan update process, a comprehensive community preparedness questionnaire was developed and disseminated. The questionnaire was developed with a specific focus to better understand the challenges and concerns related to access and functional needs, access to information, ability to recover, and services needed, especially for those who may be underserved or lack access to key resources. The survey was available in English, Spanish, Traditional and Simplified Chinese, and Tagalog. Additionally, Spanish translation assistance was provided during all Public Meetings that were held, which is a key demographic in Contra Costa County.

The County and participating jurisdictions have a responsibility to ensure equitable outcomes in the implementation of this Plan and to ensure that action is taken to reduce vulnerabilities to disasters experienced disproportionately by marginalized populations.

When conducting community engagement related to implementation of or update to this Plan, Contra Costa County will ensure that the whole community has an opportunity to participate in the process and discussion. FEMA defines the whole community as the groups and organizations that should share the responsibility for emergency preparedness and mitigation, to include: 5 1 Federal Emergency Management Agency. (2023). Social Vulnerability. Retrieved from https://hazards.fema.gov/nri/social-vulnerability.
2 Federal Emergency Management Agency. (2023). Community Resilience. Retrieved from https://hazards.fema.gov/nri/community-resilience.
3 Federal Emergency Management Agency. (2023). Determining Risk. Retrieved from https://hazards.fema.gov/nri/determining-risk.
4 United States Council of Environmental Quality. (n.d.). Climate and Economic Justice Screening Tool:

Methodology. Retrieved from https://screeningtool.geoplatform.gov/en/methodology. 5 Federal Emergency Management Agency. (n.d.). Guide to Expanding Mitigation. Retrieved from https://www.fema.gov/sites/default/files/documents/fema_mitigation-guide_whole-community.pdf.

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Individuals
Families
Businesses
Faith-based and
community
organizations
Non-profit groups
Schools and academia
Media
Local and state
government
Artists and arts
organizations
Tribal government and
associations
Territories
Other federal agencies

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CHAPTER 3. COMMUNITY PROFILE
Contra Costa County is located in the Bay Area region of California and is considered an East Bay region. 6 The County is the ninth most populous County in the State of California with a population of 1,157,019 and 19 municipalities including 17 cities and two (2) towns. 7 The population per square mile is approximately 1,614.
8 The major population centers include the cities of Concord, Antioch, and Richmond and the County seat is the City of Martinez, located in the northwest part of the County. 9 The name “contra costa” is Spanish for “opposite coast” due to its location across San Francisco. 10 Like most locations in the United States, Contra Costa County is vulnerable to natural, human-caused, and technological hazards that threaten life safety, public health, business, economy, and its critical infrastructure. Figure 3-1 illustrates the Contra Costa County planning area.

Figure 3-1. Contra Costa County Planning Area
6 Contra Costa County. (n.d.). Our County. Retrieved from https://www.contracosta.ca.gov/31/Our-County. 7 United States Census Bureau. (2022). Quick Facts: Contra Costa County. Retrieve from https://www.census.gov/quickfacts/fact/table/contracostacountycalifornia/. 8 Ibid.
9 State of California Department of Finance. (2023). Population and Housing Estimates for Cities, Counties, and the State - January 1, 2022 and 2023. Retrieved from https://dof.ca.gov/forecasting/demographics/estimates-e1/. 10 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan – Planning Context.

Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/Contra-Costa-County-GeneralPlan_Public-Review-Draft_Combined-2.pdf.

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3.1 CONTRA COSTA COUNTY HISTORY
The first inhabitants in Contra Costa County were members of the Bay Miwok, Northern Valley Yokuts, and Ohlone Tribes and land was used for a variety of reasons. 11 The Spanish colonization of what is now known as California began in 1769 and the area was controlled by Spain until 1821 when Mexico won its independence. Under Mexican rule, the County was divided into 15 land grants (i.e., ranchos), which were granted to settlers. Many names of the County’s cities and areas are derived from the ranchos or their owners. 12 In 1848, after the Mexican American War, California was relinquished by the United States. Two (2) years later, in 1850, Contra Costa County became one of the original 27 counties established in the State of California with Martinez as the County seat. Less than 5,000 people resided in the County at the time.

Cattle ranching was always present since the ranchos. However, the latest economic activity in the 19th century was agriculture. Although crops grown changed throughout the years, wheat, grapes, and walnuts were prominent. Additionally, the presence of deep water along the western coastline and the Carquinez Strait made industrial development possible with the Standard Oil refinery in Richmond. 13 Rapid industrialization during World War II sparked urban development and economic expansion and diversification in the area. 14
Contra Costa County is usually considered as comprising of three (3) regions – West County, Central County, and East County. The West County area was the first area to develop with urban and industrial uses. Prior to World War II, several cities and unincorporated areas existed, but they were relatively small. Richmond was the largest city with a population of 23,093 in the 1940 United States Census.

Nonetheless, West County became a central point for industrial activity during the War, which led to fast and extensive urbanization. Kaiser Shipyards was located in Richmond and produced 750 ships, more than any other shipyard in the United States. In 1950, the City of Richmond had a population of approximately 100,000. Post World War II (1950s through 1960s), a wave of suburbanization was experienced in Central County. Rural agricultural communities were transformed into cities where middle and upper-class residents were able to live in new construction with the ability to commute via the expanding freeway network. In the 1980s, suburban development began extending into the agricultural landscape of East County, and due to the lower housing costs in the area and scenic open spaces, residents tended to gravitate more towards this area. The City of Brentwood grew rapidly, and the City of Oakley was incorporated in 1999.
15 3.2 TOPOGRAPHY
Contra Costa County is located in northern California bordered by Alameda County to the south, San Joaquin County to the east, Sacramento and Solano counties to the north, and East Bay of the San Francisco Bay to the west. The County stretches approximately 40 miles from west to east and 20 miles 11 Ibid.
12 Contra Costa County Historical Society. (n.d.). Contra Costa County History. Retrieved from https://www.cocohistory.org/contra-costa-county-history. 13 Ibid.
14 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan – Planning Context.

Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/Contra-Costa-County-GeneralPlan_Public-Review-Draft_Combined-2.pdf. 15 Ibid.

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from north to south. Contra Costa County has a total land area of 716.9 square miles. 16 Contra Costa
County’s topography is comprised of the San Francisco and San Pablo bays, and the Sacramento-San Joaquin Delta. Furthermore, near the County’s center is Mount Diablo with a peak of 3,849 feet. 17 Mount
Diablo is part of the Diablo Range which is a dominant topographic feature in northern California, and it is a localized uplift associated with the San Andreas Fault system. 18 Other topographic features include
the Oakland/Beverly Hills.

Figure 3-2 illustrates the topographical map for Contra Costa County.

Figure 3-2. Topographical Map

3.3 CLIMATE
Based on the Modified Köppen Climate Classification System, Contra Costa County is a Mediterranean (temperate, warm, dry summers) climate that is characterized by hot, dry summers and cool, wet winters.

However, the location’s distance from the coast has a significant effect on the location’s climate. Coastal Contra Costa County has moderate temperatures throughout the year with mild and wet winters, and 16 United States Census Bureau. (2022). Contra Costa County, California Profile. Retrieved from https://data.census.gov/profile/Contra_Costa_County,_California?g=050XX00US06013. 17 Contra Costa County. (2015). Contra Costa County Climate Action Plan. Retrieved from https://www.contracosta.ca.gov/DocumentCenter/View/39791/Contra-Costa-County-Climate-Action-Plan?bidId=. 18 California Geological Survey and California State Parks. (2015). CGS Special Report 230: Geological Gems of California State Parks. Retrieved from
https://www.parks.ca.gov/pages/734/files/GeoGems%20FINAL%20WEB.pdf.

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foggy conditions during the summer months. Central and easter portion of the County, in the inland valley, summers tend to be hotter while the winters are colder. 19, 20 In the winter (December through February), the average daily temperature is 52.7°F with temperatures reaching low 60s during the day and mid 40s during the evening. During the summer (June through August), the average daily temperature is 64.6°F with temperatures reaching the low 70s during the day and high 50s in the evening. The coldest month in Contra Costa County is January and the warmest month is September. The monthly climate summary, based on the Oakland Museum weather station, is listed on Table 3-1.

Table 3-1. Contra Costa County Monthly Climate Summary (1970 – 2023) Average Daily Temperature 21 (° F)
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Annual

51.7 54.7 56.3 58.3 61.0 63.6 64.4 65.8 66.4 63.7 57.2 51.7 59.4 Average Maximum Temperature 22 (° F)
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Annual

58.8 62.1 63.8 66.4 68.9 71.7 72.0 73.4 74.8 72.4 65.0 58.4 67.1 Average Minimum Temperature 23 (° F)
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Annual

44.7 47.2 48.8 50.3 53.2 55.5 56.8 58.1 58.0 55.1 49.5 45.0 51.8 Average Total Precipitation 24 (inches)
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec Annual

4.13 3.90 3.47 1.28 0.58 0.15 0.04 0.06 0.24 1.29 2.87 4.26 22.10 The closest National Weather Service weather station to Contra Costa County is the Oakland Museum where weather observations have been continuous since October 1970.
19 Contra Costa County. (2015). Contra Costa County Climate Action Plan. Retrieved from https://www.contracosta.ca.gov/DocumentCenter/View/39791/Contra-Costa-County-Climate-Action-Plan?bidId=. 20 State of California The Resource Agency Department of Fish and Wildlife. (2021). Atlas of the Biodiversity of California. Retrieved from https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=211302&inline. 21 National Oceanic and Atmospheric Administration. (2023). NOWData – NOAA Online Weather Data (Monthly Mean Average Temperature for Oakland Museum, CA). Retrieved from https://www.weather.gov/wrh/climate?wfo=mtr.
22 National Oceanic and Atmospheric Administration. (2023). NOWData – NOAA Online Weather Data (Monthly Mean Max Temperature for Oakland Museum, CA). Retrieved from https://www.weather.gov/wrh/climate?wfo=mtr.
23 National Oceanic and Atmospheric Administration. (2023). NOWData – NOAA Online Weather Data (Monthly Mean Min Temperature for Oakland Museum, CA). Retrieved from https://www.weather.gov/wrh/climate?wfo=mtr. 24 National Oceanic and Atmospheric Administration. (2023). NOWData – NOAA Online Weather Data (Monthly Sum Precipitation for Oakland Museum, CA). Retrieved from https://www.weather.gov/wrh/climate?wfo=mtr.

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3.4 LAND USE
Contra Costa County, including incorporated and unincorporated County, has a total area of 515,840 acres (806 square miles) of which 57,600 acres (90 square miles) are water. Table 3-2 outlines the acreage of unincorporated county area designated for each land use type. 25 Residential densities are
expressed in terms of dwelling units per net acre, which is the area remaining after land is dedicated for rights-of-way, easements, and other public or common uses. As a rule of thumb, the County assumes net acreage to be 75% of the gross for single-family residential projects and 80% of the gross for multiplefamily residential and mixed-use projects. A project’s actual density is calculated during the development review process and must usually fall within the density range for the applicable land use designation.

Development intensities for nonresidential uses are expressed in terms of floor area ratio (FAR), which is the ratio of gross building floor square footage to gross land area, expressed as a decimal number.

When a building’s square footage is equal to the area of the parcel it occupies, the FAR is 1.0. FARs are lower in suburban areas, where buildings are shorter and often surrounded with parking and landscaping, than in urban areas, where buildings are taller and occupy more of their respective parcels. Nonresidential development cannot exceed the FAR for the applicable land use designation.

Table 3-2. Acreages of Land Use Designations
Land Use Designation Area (acres) Percent of Total
Residential Very Low Density 2,518 0.81%
Residential Low Density 6,302 2.03%
Residential Low-Medium Density 5,810 1.87%
Residential Medium Density 3,504 1.13%
Residential Medium-High Density 771 0.25%
Residential High Density 125 0.04%
Residential very High Density 55 0.02%
Commercial and Office 269 0.09%
Light Industry 1,285 0.41%
Heavy Industry 3,408 1.10%
Mixed-Use Low Density 233 0.08%
Mixed-Use Medium Density 69 0.02%
Mixed-Use High Density 108 0.34%
Mixed-Use Community-Specific Density 363 0.12%
Public and Semi-Public 16,884 5.44%
Agriculture Core 11,902 3.83%
Agriculture Lands 95,852 30.86%
Parks and Recreation 72,796 23.44%
25 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan – Planning Context.

Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/Contra-Costa-County-GeneralPlan_Public-Review-Draft_Combined-2.pdf.

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Land Use Designation Area (acres) Percent of Total
Commercial Recreation 1,838 0.59%
Resource Conservation 59,900 19.29%
Water 26,564 8.55%
Total 310,554 100.0%
Figure 3-3 illustrates the general land use map within Contra Costa County.

Figure 3-3. Land Use Map

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3.5 CHANGES IN DEVELOPMENT & DEVELOPMENT TRENDS
The State of California requires, by law, that every county and city adopt a general plan that outlines the goals, policies, and specific implementation measures expected to guide the decision on future growth, development, and resource conservation for the next 20 years. 26 Additionally, each general plan serves are the “charter” or “constitution” governing development, and governments are required, by law, to implement the plan once it is adopted. Each general plan must contain the eight (8) State-mandated elements – Land Use, Circulation, Housing, Conservation, Open Space, Safety, Noise, and Environmental Justice. 27
The Contra Costa County Hazard Mitigation Plan will work together with the general plans to support wise land use in the future by providing vital information on the risks associated with natural hazards in the planning area. Furthermore, all municipal planning partners will incorporate this Hazard Mitigation Plan in their general plans by reference. This will ensure that future development trends can be established with the benefits of the information on risk and vulnerability to the hazards identified in this Plan.

The Contra Costa County General Plan can be accessed via the following link https://www.contracosta.ca.gov/4732/General-Plan. The County’s General Plan was undergoing an update during the development of this Hazard Mitigation Plan. Further details of the update can be accessed via the following link https://envisioncontracosta2040.org/.

3.5.1. Implications of Development on Risk
Growth patterns directly affect hazard impacts, risk, and vulnerability. Growth can lead to an increase in the number of people and developed properties exposed to hazards. Figure 3-4 illustrates existing development in flood zones within Unincorporated Contra Costa County areas. 26 Contra Costa County. (n.d). General Plan: Overview. Retrieved from https://www.contracosta.ca.gov/4732/General-Plan.
27 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan – Planning Context.

Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/Contra-Costa-County-GeneralPlan_Public-Review-Draft_Combined-2.pdf.

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Figure 3-4. Existing Development in Unincorporated Contra Costa County Flood Zones 28

3.6 FUTURE TRENDS IN DEVELOPMENT
The State of California is a strong growth management state that equips its local governments with general plans to address future developments, including safety and housing elements. Regional housing needs assessments are mandated by State law as part of the periodic process of updating local general plan housing elements. Safety elements have similar mandates, including those that promote integration with local hazard mitigation plans. These initiatives provide a strong footing for Contra Costa County to manage and address development pressures as it interfaces known hazard areas. These land use initiatives, and the adoption and enforcement of strong building codes and standards are key ingredients to overall community resilience.

3.7 DEMOGRAPHICS
Population and Population Density: Contra Costa County had a population of 1,156,966 as of July 1, 2022. The majority of this population resides within incorporated areas. Between 2010 and 2020, the population increased by approximately 11.1%; however, a population decrease of 0.8% occurred between 2020 and 2022. 29 Table 3-4 shows Contra Costa County’s population distribution by jurisdiction between 2010 and 2022.
28 Ibid.
29 United States Census Bureau. (2022). Quick Facts: Contra Costa County, California. Retrieve from https://www.census.gov/quickfacts/fact/table/contracostacountycalifornia/PST045222.

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Table 3-3. Population Estimates 30
Jurisdiction 2010 2020 2022 Population Change
(2010 – 2022)
Contra Costa County 1,046,025 1,165,927 1,156,966 10.6% City of Antioch 102,372 115,291 115,264 12.6%
City of Brentwood 51,481 64,292 66,127 28.4%
City of Clayton 10,897 11,070 10,904 0.1%
City of Concord 122,067 125,410 122,265 0.2%
Town of Danville 42,039 43,582 42,732 1.6%
City of El Cerrito 23,549 25,962 25,583 8.6%
City of Hercules 24,060 26,016 25,920 7.7%
City of Lafayette 23,893 25,391 25,044 4.8%
City of Martinez 35,824 37,287 36,447 1.7%
Town of Moraga 16,016 16,870 16,707 4.3%
City of Oakley 35,432 43,357 44,688 26.1%
City of Orinda 17,643 19,514 19,355 9.7%
City of Pinole 18,390 19,022 18,582 1.0%
City of Pittsburg 63,264 76,416 77,572 22.6%
City of Pleasant Hill 33,152 34,613 33,913 2.3%
City of Richmond 103,701 116,448 114,301 10.2%
City of San Pablo 29,139 32,127 31,389 7.7%
City of San Ramon 72,148 84,605 85,953 19.1%
City of Walnut Creek 64,173 70,127 68,969 7.5%
Income and Socioeconomic Status: In 2022, the median household income in Contra Costa County was $120,061.
31 About 6.6% of the households in the Contra Costa County have an annual income of less than $15,000 per year and are therefore below the poverty level. Table 3-5 outlines the poverty thresholds for 2022 by size of family. 32
30 United States Census Bureau. (2022). Quick Facts. Retrieved from https://www.census.gov/quickfacts/. 31 United States Census Bureau. (2022). S1901: Income in the Past 12 Months (in 2022 Inflation-Adjusted Dollars). Retrieve from https://www.census.gov/quickfacts/fact/table/contracostacountycalifornia/PST045222. 32 United States Census Bureau. (2022). Poverty Threshold (By Size of Family and Number of Children).

Retrieved from https://www.census.gov/data/tables/time-series/demo/income-poverty/historical-povertythresholds.html.

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Table 3-4. Poverty Thresholds for 2022 by Size of Family Size of Family Unit Weighted Average Threshold
One (1) Person $14,880
Two (2) People $18,900
Three (3) People $23,280
Four (4) People $29,950
Five (5) People $35,510
The source of the weighted average thresholds is the 2023 Current Population Survey Annual Social and Economic Supplement (CPS ASEC).

Sex and Age Distribution: 17.4% of Contra Costa County’s population is 65 years old and over, compared to the State average of 15.8%. It is also estimated that 21.7% of the County’s population is 18 or younger, compared to the State average of 21.8%. 33 Additionally, approximately 21.4% of Contra Costa County population has a disability type (i.e., hearing, vision, cognitive, or ambulatory, self-care, and independent living difficulty). 34 Females make up 50.8%, which is slightly above the national average of 50.4%, while males make up 49.2% of the Contra Costa County population. 35 The age group with the highest percentage is the 35 to 39 age group, with the 40 to 44 age group as the second highest. The overall age distribution for Contra Costa County is outlined in Table 3-6.

Table 3-5. Age Distribution (2022) 36
Age Group Estimate Percent
Under 5 Years 61,175 5.3%
5 to 9 Years 68,924 6.0%
10 to 14 Years 72,660 6.3%
15 to 19 Years 74,953 6.5%
20 to 24 Years 67,593 5.8%
25 to 29 Years 65,654 5.7%
30 to 34 Years 75,126 6.5%
35 to 39 Years 82,400 7.1%
40 to 44 Years 80,566 7.0%
45 to 49 Years 77,407 6.7%
50 to 54 Years 79,534 6.9%
55 to 59 Years 75,803 6.6%
33 United States Census Bureau. (2022). Quick Facts: California. Retrieve from https://www.census.gov/quickfacts/fact/table/CA/.
34 United States Census Bureau. (2022). S1810: Disability Characteristics (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1810?g=050XX00US06013. 35 United States Census Bureau. (2022). Quick Facts: Contra Costa County, California. Retrieve from https://www.census.gov/quickfacts/fact/table/contracostacountycalifornia. 36 United States Census Bureau. (2022). S0101: Age and Sex (2022: ACS 1-Year Estimates Subject Tables).

Retrieved from https://data.census.gov/table/ACSST1Y2022.S0101?g=050XX00US06013.

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Age Group Estimate Percent
60 to 64 Years 74,035 6.4%
65 to 69 Years 61,568 5.3%
70 to 74 Years 53,717 4.6%
75 to 79 Years 38,877 3.4%
80 to 84 Years 22,488 1.9%
85 Years and Over 24,486 2.1%
Race and Ethnic Distribution: The majority of the population in Contra Costa County is White (40.9%), with the next highest percent being Hispanic or Latino (27.0%) and Asian (19.3%). Table 3-7 outlines the racial and ethnic distribution in Contra Costa County. 27.0% of the population in Contra Costa County is foreign-born.
37 Other than English, the most commonly spoken language in Contra Costa County is Spanish (18.7%). The United States Census Bureau estimates that 14.5% of the County’s residents speak English “less than very well.” 38
Table 3-6. Racial and Ethnic Distribution (2022) 39
Race and Ethnicity Estimate Percent
White (not Hispanic or Latino) 472,779 40.9%
Black or African American 100,358 8.7%
American Indian and Alaska Native 8,043 0.7%
Asian 223,114 19.3%
Native Hawaiian and Other Pacific Islander 5,970 0.5%
Two (2) or More Races 182,593 15.8%
Some Other Race Alone 164,109 14.2%
Hispanic or Latino 311,808 27.0%

3.7.2. Underserved Population
The 2023 California State Hazard Mitigation Plan identifies the Centers for Disease Control and Prevention (CDC) Social Vulnerability Index (SVI) as the most appropriate and authoritative dataset to identify areas where efforts can be prioritized to ensure equitable outcomes from mitigation planning and actions.
37 United States Census Bureau. (2022). DP02: Selected Social Characteristics in the United States (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP02?g=050XX00US06013. 38 United States Census Bureau. (2022). S1601: Language Spoken at Home (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1601?g=050XX00US06013. 39 United States Census Bureau. (2022). DP05: ACS Demographic and Housing Estimates (2022:ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP05?g=050XX00US06013.

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CDC’s SVI combines 16 social factors, within four (4) themes (i.e., socioeconomic status, household characteristics, racial and ethnic minority status, and housing type and transportation), to identify areas of social vulnerability. Table 3-8 outlines the SVI information for Contra Costa County.

Table 3-7. Social Vulnerability Index (2020)
Theme Social Factors Population Percent
Socioeconomic
Status
People below 150% poverty estimate 156,345 13.4%
Unemployed
(Civilian 16 years old and older) 32,666 2.8%
Housing Cost Burden 98,841 8.5%
No High School Diploma 80,257 6.9%
No Health Insurance 57,133 4.9%
Household
Characteristics
65 years old and older 181,578 15.6%
17 years and younger 260,191 22.3%
Civilian with a Disability 127,957 11.0%
Single-Parent Household 23,103 2.0%
English Language Proficiency 65,454 5.6%
Racial and Ethnic
Minority Status
Hispanic or Latino (of any race)
Black or African American
Asian
American Indian or Alaska Native
Native Hawaiian or Pacific Islander
Two or More Races
Other Races
658,653 56.5%
Housing Type and
Transportation
Multi-Unit Structures 53,171 4.6%
Mobile Homes 6,533 0.6%
Crowding 19,927 1.7%
No Vehicle 21,003 1.8%
Group Quarters 9,828 0.8%

3.7.2.1. Impacted Communities
The term impacted communities was introduced into the 2024 Contra Costa County Climate Action Plan.

Impacted communities (e.g., low income, disabled, seniors, communities of color) have faced extensive discrimination, negligence, and economic disempowerment. Members of these communities often live in areas that are uniquely vulnerable to climate change related natural hazards. Furthermore, these individuals often lack the financial means and other resources or authority to act on climate change initiatives. Figure 3-5 illustrates the where the impacted communities are located within unincorporated Contra Costa County which are concentrated along the County’s northern waterfront.

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Figure 3-5. Impacted Communities

3.8 ECONOMY

64.5% of the 16 and over population was in the labor force. Of the 604,766 civilian-employed population,

77.4% were employed in the private sector. Contra Costa County is currently experiencing an average unemployment rate of 5.1%. Educational services, health care, and social assistance represent the largest sector, employing over 22.5% of the workforce. Tables 3-9 through 3-11 provide a breakdown of the economic characteristics of Contra Costa County. 40 40 United States Census Bureau. (2022). DP03: Selected Economic Characteristics (2022:ACS 1-Year Estimates Data Profiles). Retrieved from https://data.census.gov/table/ACSDP1Y2022.DP03?g=050XX00US06013.

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Table 3-8. Employment by Industry (2022)
Industrial Sector Estimate Percent
Agriculture, forestry, fishing, hunting, and mining 3,771 0.7% Construction 45,553 7.9%
Manufacturing 33,037 5.8%
Wholesale funds 11,224 2.0%
Retail trade 61,311 10.7%
Transportation, warehousing, and utilities 34,306 6.0%
Information 14,469 2.5%
Finance and insurance, real estate, and leasing 42,417 7.4% Professional, scientific, management, and administrative 102,135 17.8% Educational services, health care, and social assistance 129,074 22.5% Arts, entertainment, recreation, accommodation, and food 45,803 8.0% Other services (except public administration) 24,092 4.2% Public administration 26,892 4.7%
Civilian Employed Population 16 Years and Over 574,084
Table 3-9. Employment Status (2022)
Employment Status Estimate Percent
Civilian Labor Force 604,766 64.5%
Employed 574,084 61.2%
Unemployed 30,682 3.3%
Armed Forces 513 0.1%
Not in Labor Force 33,2497 35.5%
Total Employed Population 16 and Over 937,776
Table 3-10. Occupation (2022)
Employment Status Estimate Percent
Management, Business, Science, and Arts 27,8075 48.4%
Service Occupations 92,665 16.1%
Sales and Office Occupations 110,681 19.3%
Natural Resources, Construction, and Maintenance 42,251 7.4% Production, Transportation, and Material Moving 50,412 8.8% Civilian Employed Population 16 and Over 574,084

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The median household income in Contra Costa County estimated in 2022 was $120,061, while 6.6% of the households in the Contra Costa County have an annual income of less than $15,000 per year and are therefore below the poverty level. Table 3-12 outlines the breakdown of income and benefits in Contra Costa County.
41 Table 3-11. Income and Benefits (2022)
Income
Number of
Households
(Estimate)
Percent
Less than $10,000 17,255 4.2%
$10,000 to $14,999 10,498 2.5%
$15,000 to $24,999 15,288 3.7%
$25,000 to $34,999 17,830 4.3%
$35,000 to $49,999 28,484 6.9%
$50,000 to $74,999 40,705 9.8%
$75,000 to $99,999 45,025 10.8%
$100,000 to $149,999 74,364 17.9%
$150,000 to $199,999 52,049 12.5%
$200,000 or more 113,696 27.4%
Median Household Income $120,061
Total Households 415,194

3.9 CRITICAL INFRASTRUCTURE
Critical infrastructure is comprised of assets, systems, and networks, whether physical or virtual, which are so vital to the United States that their incapacitation or destruction would have a debilitating effect on security, national economic security, national public health or safety, or any combination thereof. 42 Table
3-13 summarizes the number of critical infrastructure within each broad category. Due to the sensitivity of this information, a detailed list of facilities is not provided as part of this Plan. The list is on file with Contra Costa County OES. Figure 3-6 shows locations of the critical infrastructure within Contra Costa County.

Table 3-12. Critical Infrastructure in Contra Costa County Critical Infrastructure Category Number of Facilities
Medical and Health 27
Government Functions 9
Protective Functions 152
School and Educational Facilities 493
HazMat 45
41 Ibid.
42 Cybersecurity & Infrastructure Security Agency. (n.d.). Critical Infrastructure Sectors. Retrieved from https://www.cisa.gov/topics/critical-infrastructure-security-and-resilience/critical-infrastructure-sectors.

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Critical Infrastructure Category Number of Facilities
Bridges 407
Water Supply 157
Wastewater 66
Power 52
Communications 109
Other Critical Functions 17
Other Critical Infrastructure 117
TOTAL 1,651
Figure 3-6. Critical Infrastructure in Contra Costa County

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3.10 CAPABILITY ASSESSMENT
Federal regulations require hazard mitigation plans to identify goals for reducing long-term vulnerabilities to the identified hazards in the planning area (Section 201.6(c)(3)(i)). A critical step in the development of specific hazard mitigation actions and projects is assessing existing authorities, policies, programs, resources, and capabilities to use or modify local tools to reduce losses and vulnerability from profiled hazards.

A capability assessment was conducted for Contra Costa County and participating jurisdictions’ authorities, policies, programs, and resources. Goals and mitigation actions were developed using input from this assessment. This section also includes information regarding the County’s jurisdictions’ implementation of and continued participation in the National Flood Insurance Program (NFIP). Capability assessments for each participating jurisdiction can be found in their respective annexes.

The Core Planning Team assessed Contra Costa County’s capabilities that can contribute to the reduction of long-term vulnerabilities to hazards. The capabilities include the following categories:

Planning and Regulatory Capabilities
Administrative and Technical Capabilities
Financial Capabilities
Education and Outreach Capabilities
Additionally, ways to expand on and improve these existing policies and programs to integrate hazard mitigation into the day-to-day activities and programs of the County were considered.

3.10.1. Planning and Regulatory Capabilities
These include local ordinances, policies, and laws to manage growth and development (e.g., land use plans, capital improvement plans, transportation plans, emergency preparedness and response plans, building codes, and zoning ordinances). The County and cities will adopt the approved 2024 Hazard Mitigation Plan into their General Plan Safety Element for AB 2140 compliance. Table 3-14 contains a list of legal and regulatory capabilities. The description section of each Planning and Regulatory Capability includes a paragraph on expansion, implementation, and improvement. These sections describe the processes to integrate this Hazard Mitigation Plan into other planning mechanisms.

Table 3-13. Countywide Planning and Regulatory Capabilities County Ordinance Code Title 7 County Code, Building Regulations Includes: Building Code, Electrical Code, Plumbing Code, Mechanical Code, Housing Code, House Moving, Grading, Community Preservation, Fire Code
Building Regulations (incorporated by reference and is based upon the 2022 California Building Code, 2022 California Residential Code, 2022 California Green Building Standards Code, and 2022 California Existing Building Code [all codified in California Code of Regulations, Title 24]); adopted November 17, 2022.

Expansion, Implementation, and Improvement: Building and Fire codes will be reviewed based on developing trends in identified hazards and mitigation measures that can make them more effective at preventing losses.

They will be updated to comply with the latest International and State building codes.

Lead
Department
Department of Conservation and
Development
Hazards
Addressed All hazards

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County Ordinance Code Title 8 – Zoning
The Zoning Code addresses land use in precise detail. It sets standards for building and construction types and usage for all parcels in the County.

Expansion, Implementation, and Improvement: Zoning Code must be modified and updated to reflect changes in development. Zoning Code may be used to address land use regulations that support mitigation actions such as development.

Lead
Department
Department of Conservation and
Development
Hazards
Addressed
Climate Change, Dam/Levee
Failure, Drought, Earthquake,
Flooding, Severe Weather,
Wildland Fire
County Ordinance Code Title 9 – Subdivisions
The Subdivision Code addresses the development of groups of residences and commercial property. It describes requirements for transportation, water, and wastewater services. It sets limits on residential property density.

Expansion, Implementation, and Improvement: Subdivision Code should be modified and updated to support changes in land use development. Additionally, it should be implemented to require adequate infrastructure to support residential area populations.

Lead
Department
Department of Conservation and
Development
Hazards
Addressed
Climate Change, Dam/Levee
Failure, Drought, Earthquake,
Flooding, Severe Weather,
Wildland Fire
County Ordinance Code Title 10 – Public Works and Flood Control The purpose is to provide for public health, safety, and general welfare and to minimize public and private losses due to flood conditions in specific areas. It also addresses the intent to protect and enhance the water quality of the County's unincorporated area watercourses pursuant to and consistent with the Porter-Cologne Water Quality Control Act (Water Code Section 13000 et seq.), the Federal Clean Water Act (33 U.S.C. Section 1251 et seq.) and applicable implementing regulations.

Expansion, Implementation, and Improvement: The FEMA Flood Inundation Risk Maps (FIRMs) will be used in selecting mitigation items related to flooding. Development in the 100 and 500-year floodplains will be monitored and adhered to flood safe practices. As the FIRMs are updated, new mitigation activities will be considered.

Lead
Department Department of Public Works Hazards Addressed Flood

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General Plan
The purpose of the Contra Costa County General Plan is to express the broad goals and policies, and specific implementation measures, which will guide decisions on future growth, development, and the conservation of resources over 20 years into the future. This Plan includes eight (8) state-mandated elements and two (2) optional elements.

Land Use
Circulation (i.e., Transportation)
Housing
Conservation (i.e., Conservation, Open Space, and Working Lands) Open Space (i.e., Conservation, Open Space, and Working Lands) Safety (i.e., Health and Safety)
Noise (i.e., Health and Safety)
Environmental Justice (i.e., Stronger Communities)
Public Facilities and Services
Growth Management
The Contra Costa County 2045 General Plan was undergoing public review during the update period of this Hazard Mitigation Plan.

Expansion, Implementation, and Improvement: The Contra Costa County Hazard Mitigation Plan will be incorporated in the General Plan Safety Element. The General Plan will include specific actions that support mitigation throughout unincorporated Contra Costa County, and will be closely aligned with the Hazard Mitigation Plan.

Lead
Department
Department of Conservation and
Development
Hazards
Addressed All hazards
County Climate Action Plan (CAP)
The Climate Action Plan (CAP), adopted in December 2015, is the County’s strategic approach to reduce greenhouse gas (GHG) emissions from sources throughout the unincorporated area. The CAP reflects the County’s programs and actions to decrease energy use, improve energy efficiency, develop renewable energy, reduce vehicle miles traveled, increase multi-modal travel options, expand green infrastructure, reduce waste, and improve the efficiency of government operations.

Expansion, Implementation, and Improvement: The CAP will be updated in parallel with the General Plan.

The General Plan will provide the long-term resiliency framework of goals and policies, and the CAP will provide strategic implementation programs to show how the County will reduce GHG emissions in support of the State’s adopted reduction targets for 2030 and 2050, reducing GHG emissions 40% below 1990 levels by 2030, with consideration of the State’s long-term goal to reduce GHG emissions to 80% below 1990 levels by 2050.

Lead
Department
Contra Costa County Department
of Conservation and Development
Hazards
Addressed
Climate Change, Drought,
Flooding, Severe Weather,
Wildland Fire, Sea Level Rise
Contra Costa Hazardous Materials Plan / Hazardous Material Business Plan Addresses the storage, use, and emergency planning for hazardous materials and extremely hazardous substances in the community and at businesses.

Expansion, Implementation, and Improvement: The Hazard Mitigation Plan will support mitigation measures compatible with the County Hazardous Materials Plan to reduce potential hazardous material releases.

Lead
Department
Contra Costa Health Services,
Hazardous Materials Program
Office; Contra Costa County Fire
Protection District
Hazards
Addressed Hazardous Materials

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Alameda and Contra Costa County Regional Wildfire Prevention Plan The Contra Costa Resource Conservation District (CCRCD) and the Alameda City Resource Conservation District (ACRCD) worked jointly with funding from the Coastal Conservancy to develop a Regional Priority Plan (RPP) for Contra Costa and Alameda counties. The goal of the Regional Priority Plan process was to identify regional natural resource concerns that could be exacerbated by catastrophic wildfire and develop projects or other methods to remedy those issues ahead of the next fire. The planning process started in November 2020 and completed in September 2022.

Expansion, Implementation, and Improvement: The Hazard Mitigation Plan and Regional Wildfire Prevention Plan should be aligned and mitigation actions in the Hazard Mitigation Plan should support the goals of the Regional Wildfire Prevention Plan. Analysis of the fire hazard in the Hazard Mitigation Plan can inform updates and revisions to the Wildfire Prevention Plan.

Lead
Department
Contra Costa County Fire
Protection District
Hazards
Addressed Wildland Fire
Community Wildfire Protection Plan – Contra Costa County The 2019 update of the Contra Costa County Wildfire Protection Plan (CWPP) provides an analysis on wildfire hazards and risk in the wildland urban interface (WUI) in Contra Costa County. The Plan follows the standards for CWPPs established by the federal Healthy Forest Restoration Act.

Expansion, Implementation, and Improvement: The Hazard Mitigation Plan and County Community Wildfire Protection Plan should be aligned and mitigation actions in the Hazard Mitigation Plan should support the goals of the CWPP. Analysis of the fire hazard in the Hazard Mitigation Plan can inform updates and revisions to the CWPP.

Lead
Department
Contra Costa County Fire
Protection District
Hazards
Addressed Wildland Fire
Capital Improvement Plan (CIP)
The Capital Improvement Plan (CIP) provides broad direction for development of County facilities and infrastructure. It describes a strategy to maintain adequate support for the County’s communities and commerce.

Additionally, it addresses transportation, greenhouse gases, stormwater, and other environmental factors.

Expansion, Implementation, and Improvement: The CIP should include mitigation measures that will be funded by the County such as improvements to stormwater collection systems, elevation of roadways at risk for flooding and strengthening of structures.

Lead
Department
Contra Costa County Fire
Protection District
Hazards
Addressed
Climate Change, Dam and Levee
Failure, Drought, Earthquake,
Flood, Landslide, Sea Level Rise,
Severe Weather, Tsunami,
Wildfire
Continuity of Operations Plan
This Plan is under development.

Lead
Department
Contra Costa County Office of
Emergency Services
Hazards
Addressed
Climate Change, Dam and Levee
Failure, Drought, Earthquake,
Flood, Landslide, Sea Level Rise,
Severe Weather, Tsunami,
Wildfire

3.10.2. Administrative and Technical Capabilities
The administrative and technical capabilities include community (i.e., public and private) staff and their skills and tools, which can be used for mitigation planning and implementation. This capability includes engineers, planners, emergency managers, GIS analysts, building inspectors, grant writers, and

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floodplain managers. Small communities may rely on other government entities, such as counties or special districts, for resources. These capabilities may be used to support mitigation activities. Table 3- 15 lists administrative and technical capabilities.

Table 3-14. Administrative and Technical Capabilities
Planners, Engineers, Building Officials, Code Enforcement Planners, engineers, building officials, and/or code enforcement issue building permits, review plans for new construction and improvements; conduct plan checks; work with architects, engineers, designers, and building owners during pre-construction; inspect all phases of residential and commercial/industrial construction for compliance; enforce municipal code violations.

Expansion and Improvement: Provide opportunities for continued education to Community Development staff to maintain state of the art knowledge of new code and regulatory requirements.

Department Department of Conservation and Development
Planners, Engineers, Analysts, General Staff
Planners, engineers, analysts, and general staff plan future County land use; development and implementation of the Envision 2040 General Plan; land use regulations through zoning and subdivision codes, and environmental review of development; administration of the Community Development Block Grant Program (CDBG), conduct the Code Compliance program with the Building Division; conduct conditional use permits, variances, land subdivision, California Environmental Quality Act (CEQA) review, public hearings, noise permits, and zoning information.

Expansion and Improvement: Provide opportunities for continued education to Community Development staff to maintain state of the art knowledge of new code and regulatory requirements.

Department Department of Conservation and Development
Director, Assistant Director, Superintendent, Supervisor, Engineers, Analysts, General Staff Directors, assistant directors, superintendents, supervisors, engineers, analysts, and general staff oversee public and private improvements in the public right of way; develop and implement the Capital Improvement Program by providing staff support to the County Infrastructure and Transportation Subcommittee regarding County streets, sanitary sewer, storm drains, water system facilities, traffic signals, park, and recreational facilities; maintain and upgrade public infrastructure; provide services related to traffic issues; monitors the street lighting system maintained by the County and Pacific Gas and Electric Company (PG&E); keeps and maintains record drawings of County owned infrastructure; conducts traffic committee meetings with the Police Department; and provides engineering support to other County departments and divisions within the Public Works Department.

Expansion and Improvement: Provide opportunities for continued education to Public Works staff to maintain state-of-the-art knowledge of new code and regulatory requirements.

Department Department of Public Works
Office of Emergency Services (OES)
The Office of Emergency Services (OES) provides coordinated response and recovery from major emergencies and disasters; develop, administer, and coordinate the emergency planning preparedness program in conformity with local, State, and Federal requirements; develop emergency management and hazard mitigation plans; provide training to County staff in emergency planning and preparedness; operate the County Emergency Operations Center; provide businesses and residents with emergency planning and preparedness material to help reduce the loss of life and property resulting from a disaster; coordinate with County, State, and Federal counterparts; prepare emergency management grants; coordinate the efforts of volunteer organizations.

Expansion and Improvement: Provide training to officers, EOC staff, and other key personnel to better prepare them to respond and recover.

Department Contra Costa County Office of the Sheriff

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Code Enforcement Officer
Investigates citizen complaints regarding the enforcement of municipal code violations, conduct inspections, notification, communication, and the issuance of citations to proactively respond to citizens’ concerns.

Expansion and Improvement: Provide opportunities for continued education to Community Development staff to maintain state of the art knowledge of new code and regulatory requirements.

Department Department of Conservation and Development
Fire Marshal
The Fire Marshal performs fire inspections for construction, commercial, multi-family occupancies, and high-rise buildings; conducts fire prevention, emergency evacuation, and extinguisher training to businesses and the public; conducts enforcement and identifies and issues notices for fire code violations; updates Fire Prevention Regulations to conform with currently adopted Codes, Regulations, and Standards; coordinates with industries for fire prevention.

Expansion and Improvement: Continue to coordinate with the County Fire Marshal to update building codes and conduct inspections of new construction.

Department Contra Costa County Fire Protection District Floodplain Administrator
As a member of the National Flood Insurance Program (NFIP), the Floodplain Manager is responsible for collaborating with stakeholders to ensure the Floodplain Management Ordinance is followed within the County.

Expansion and Improvement: Continue to manage the County’s NFIP participation. Support the development of mitigation activities consistent with the best practices for floodplain management.

Department Director of Public Works
Public Information Officer (PIO)
The Public Information Officer (PIO) provides public and media information regarding the County’s disaster response, mitigation, and recovery efforts.

Expansion and Improvement: Continue to use PIOs to promote awareness of the Hazard Mitigation Plan and activities associated with individual mitigation projects as they are implemented.

Department Office of Communications and Media
Information Technology (IT) and Geographic Information System (GIS) Information technology (IT) and Geographic Information System (GIS) provide the technical resources and support necessary to operate all of the applications relating to the County's information resources; respond to the service needs to all departments based on countywide priorities as established by the County Administrator’s Office (CAO); responsible for the training and effective use of all County technology computer hardware, software, and peripherals; provide internal coordination of technology efforts Countywide including substantial interface with all technology vendors to assure cost-effective, secure, and reliable technologies compatible with the long-range needs of the County; provide high-quality spatial data to County departments.

Expansion and Improvement: Acquire and conduct training for GIS technicians on the latest versions of ArcGIS.

Department Department of Information Technology

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Risk Management
Risk Management provides services to assist County departments in managing their risk of injury to employees, County property, and the public at large; purchase insurance for County departments and act in an advisory capacity with respect to workers' compensation, public liability, County property, and County contracts.

Expansion and Improvement: Continue to have the Risk Manager provide input to support the analysis of potential losses due to hazards. Update Hazard Mitigation Plan based on current insurance values.

Department Contra Costa County Risk Management

3.10.3. Financial Capabilities
Table 3-16 contains a list of financial capabilities available to the County. These financial resources may be used to support mitigation activities based on procedures for each resource.

Table 3-15. Financial Resources
General Fund
The General Fund Program funds operations and specific projects.

Expansion and Improvement: Hazard mitigation projects may be considered during the annual budgeting process for funding from the general fund.

Administrator Department Specific
Board of Supervisors Administered Special Funds
The Board of Supervisors Administered Special Funds most special revenue funds were established to mitigate the impact of projects approved in certain areas of the County and that most funds have been intended for uses that will benefit the quality of life for the communities in which the project is approved and special revenue funds originated.

Expansion and Improvement: Focus Administered Special Funds on projects that provide mitigation to natural hazards.

Administrator Board of Supervisors
National Pollutant Discharge Elimination System (NPDES) The National Pollutant Discharge Elimination System (NPDES) is a joint effort of the Planning, Engineering, and Public Works departments through the Contra Costa County Clean Water Program. Since 1993, Contra Costa County Flood Control and Water Conservation District, and 16 cities in the county have worked together to meet federal mandates for minimizing pollutants in stormwater runoff. This revenue is used to fund its prorated share of the Clean Water Program’s staffing, overhead costs, and local-level activities necessary to comply with the joint Municipal Regional Permit (MRP) provisions.

Expansion and Improvement: Where permissible, the NPDES Fund may be considered during the annual budgeting process for funding mitigation projects.

Administrator Department of Conservation and Development

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Community Development Block Grant (CDBG)
The Community Development Block Grant (CDBG) Program provides funding for eligible senior activities such as in-home care, art classes, counseling, and home-delivered meals. United States Department of Housing and Urban Development (HUD) also provides Disaster Recovery Assistance in the form of flexible grants to help cities, counties, and states recover from Presidentially declared disasters, especially in low-income areas, subject to the availability of supplemental appropriations.

Expansion and Improvement: Where applicable, CDBG should be used to fund mitigation projects that enhance the resiliency of low-income and underserved communities.

Administrator Federal Emergency Management Agency, Department of Conservation and Development Hazard Mitigation Grant Program (HMGP)
The Hazard Mitigation Grant Program (HMPG) provides support for post-disaster mitigation plans and projects.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the California OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency
Building Resilient Infrastructure and Communities (BRIC) Building Resilient Infrastructure and Communities (BRIC) provides support for pre-disaster mitigation plans and projects.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the California OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency
Flood Mitigation Assistance (FMA) Grant Program
The Flood Mitigation Assistance (FMA) Grant Program mitigates structures and infrastructure with repetitive losses.

Expansion and Improvement: Train staff on notice of intent (NOI) procedures and track opportunities on the California OES mitigation website to initiate applications for grant funding.

Administrator Federal Emergency Management Agency

3.10.4. Education and Outreach Capabilities
Table 3-17 lists the County's public outreach capabilities. These capabilities include fire safety programs, hazard awareness campaigns, public information, and communications offices. Education and outreach capabilities can be used to inform the public about current and potential mitigation activities.

Table 3-16. Education and Outreach Resources
County Emergency/Disaster Readiness Website
https://www.cocosheriff.org/disaster-preparedness/emergency-services-division The County Sheriff’s website has educational material on numerous programs, including making an emergency plan, stocking supplies, staying informed, and getting involved in community preparedness programs.

Expansion and Improvement: Provide links to the County website on all County websites. Post material on social media accounts that provide a link to the appropriate FEMA website page.

Lead Organization Contra Costa County Office of Emergency Services

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County Public Safety and Emergency Information
https://www.contracosta.ca.gov/5435/Public-Safety-Emergency-Info Provides resources and links for public safety and emergency information in Contra Costa County.

Expansion and Improvement: Provide additional links to other organizations such as FEMA and PG&E.

Lead Organization Contra Costa County Office of Emergency Services County Community Emergency Response Team (CERT) Coalition The Community Emergency Response Team (CERT) Program is a 20-hour all risk, all hazard training offered by the County Fire Department. This valuable course is designed to help you protect yourself, your family, your neighbors, and your neighborhood before, during, and after an emergency.

Expansion and Improvement: Conduct coordinated training and exercises with all County CERTs to improve interoperability.

Lead Organization Contra Costa County Cities Citizen Corps County Office of Communications and Media
https://www.contracosta.ca.gov/128/Office-of-Communications-and-Media The Contra Costa County's Office of Communications and Media, a division of County Administration, oversees public information and media relations. It is responsible for coordinating emergency communications countywide.

Expansion and Improvement: Use Office of Communications and Media resources to increase enrollment in the County Community Warning System. Feature mitigation activities in programming on public access channels.

Lead Organization County Administration
Contra Costa Television (CCTV)
Contra Costa Television (CCTV) is the flagship channel of Contra Costa County’s cable television programming, bringing special events, government meetings, and produced shows. CCTV broadcasts on channels Comcast Cable 27, ATT/U-Verse 99, and Astound 32 & 1027.

Expansion and Improvement: Use CCTV to provide information on how the public can support mitigation activities including limiting creating greenhouse gases and providing fire safety zones around residences.

Lead Organization County Administration
Community Warning System (CWS)
The Community Warning System (CWS) can alert residents and businesses within Contra Costa County that are impacted by or are in danger of being impacted by an emergency. The CWS message will include basic information about the incident and what specific protective actions (e.g., shelter in place, lockdown, evacuate, avoid the area) are necessary for life safety and health.

Expansion and Improvement: Coordinate community evacuation drills using the CWS to implement the exercise. Conduct post-exercise information fairs at evacuation collection points.

Lead Organization Contra Costa County Office of the Sheriff

3.11 HAZARD MITIGATION INTEGRATION
The information on hazards, risk, vulnerability, and mitigation contained in this Hazard Mitigation Plan is based on the best available data at the time of the Plan update. Plan integration consists of the incorporation of hazard mitigation into other relevant planning mechanisms (e.g., general planning and capital improvement planning). It includes the integration of natural hazard information and mitigation

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policies, principles, and actions into local planning mechanisms and vice versa. Additionally, plan integration is achieved through the involvement of key staff and community officials in collaborative hazard mitigation planning.

3.11.1. Existing Plan Integration
In the performance period since the adoption of the previous Hazard Mitigation Plan, Contra Costa County made progress on integrating components of the hazard mitigation strategy (e.g., goals, objectives, and actions) into the planning initiatives listed in Table 3-18.

Table 3-17. Current Plan Integration
Planning Initiative Description
Capital Improvement Plan
The Plan includes projects that can help mitigate potential hazards. The County will strive to ensure consistency between the Hazard Mitigation Plan and the current and future Capital Improvement Plan. The Hazard Mitigation Plan may identify new possible funding sources for capital improvement projects and may result in modifications to proposed projects based on results of the risk assessment.

Building Code The County’s adoption of the 2022 California Building Code incorporated local modifications addressing seismic and fire hazards.

General Plan
The County General Plan includes a Safety Element to protect the community from unreasonable risk by establishing policies and actions to avoid or minimize geological and seismic, fire, hazardous materials, and flooding hazards. Contra Costa County is in the process of updating the General Plan, and efforts to continue integrating and improving the Safety Element are ongoing.

The 2045 General Plan’s Safety Element includes all the hazards that impact the County; Community Profiles (for each unincorporated neighborhood) that identify the community’s local hazards; Impacted Communities where the population is exposed to hazards at higher levels than others; and policies and actions.

Climate Action Plan Highlights potential programs that could be implemented to reduce greenhouse gas emissions and discusses possible impacts of climate change.

County Debris Management
Plan
The County of Contra Costa Disaster Debris Management Plan (DDMP) provides a comprehensive framework for managing debris following a disaster for all debris-generating hazards. It addresses the roles and responsibilities of government organizations, private firms, and non-governmental organizations that might have a role in debris operations.

Envision Contra Costa
Envision Contra Costa 2040 is the County’s plan to address land use, transportation, housing, climate change, environmental justice, and other important issues over the next 20 years. At the time of this Hazard Mitigation Plan update, the 2045 General Plan and the 2024 Climate Action Plan were undergoing public comment. In an effort to integrate both of these plans into hazard mitigation, the outcomes of the extensive public outreach for the ongoing Envision Contra Costa 2040 process were incorporated into this Plan.

3.11.2. Potential Future Integration
As the Hazard Mitigation Plan is implemented, Contra Costa County will use information from the Plan as the best available science and data on hazards. The capability assessment presented in Section

3.10.1 of this Annex identifies codes, plans, and programs that provide opportunities for integration. The countywide and local action plans developed for this Plan are related to plan integration. The capability

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assessment identified plans and programs, listed in Table 3-19, that do not currently integrate goals and recommendations of this Plan but provide opportunities to do so in the future.

Table 3-18. Potential Future Integration
Planning Initiative Description
Flood Control Capital
Improvement Plan
Capital improvement project proposals may take into consideration hazard mitigation potential as a means of evaluating project prioritization.

Capital Road Improvement
and Protection Plan
Capital improvement project proposals may take into consideration hazard mitigation potential as a means of evaluating project prioritization.

County General Plan
The County is conducting a comprehensive update to its General Plan. The opportunity to incorporate additional hazard mitigation and abatement measures will be considered for inclusion into the updated General Plan.

County Emergency
Operations Plan (EOP)
The County EOP establishes the emergency organization, assigns tasks, specifies policies and general procedures, and provides for the coordination of planning efforts of the various emergency staff and service elements utilizing the Standardized Emergency Management System (SEMS). The EOP and the Hazard Mitigation Plan are currently integrated and will continue to be integrated, as appropriate. Specifically, the new hazard ranking methodology and rankings may be one area for inclusion.

Post-Disaster Recovery Plan
The County does not have a recovery plan and intends to develop one as a mitigation planning action during the next five (5) years. The Recovery Plan will build on the mitigation goals and objectives identified in the Hazard Mitigation Plan.

3.12 NATIONAL FLOOD INSURANCE PROGRAM
As of January 2024, Unincorporated Contra Costa County and all 19 jurisdictions within the County are members of the National Flood Insurance Program (NFIP). Table 3-20 identifies each community and the date each participant joined the NFIP. 43
Seven (7) of the NFIP communities also participate in the Community Rating System (CRS) which is a voluntary incentive program that recognizes and encourages community floodplain management activities that exceed the minimum NFIP requirements. As a result, flood insurance premium rates are discounted to reflect the reduced flood risk resulting from the community actions, meeting the three (3) goals of the CRS:

Reduce flood losses.

Facilitate accurate insurance ratings.

Promote flood insurance awareness.

Table 3-19. NFIP Participation Information
CID Community
Name
NFIP
Participation
Date
Current
Effective
FIRM Date
CRS Entry
Date
CRS
Current
Effective
Date
CRS
Class
060025 Unincorporated
Contra Costa 11/1/1974 3/21/2017 10/1/1991 10/1/2022 6
43 Federal Emergency Management Agency, National Flood Insurance Program. (2024). Community Status Book Report. Retrieved from https://www.fema.gov/cis/CA.pdf.

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CID Community
Name
NFIP
Participation
Date
Current
Effective
FIRM Date
CRS Entry
Date
CRS
Current
Effective
Date
CRS
Class
060026 City of Antioch 6/28/1974 3/21/2017 N/A N/A N/A
060439 City of Brentwood 2/7/1975 3/21/2017 N/A N/A N/A 060027 City of Clayton 5/17/1974 3/21/2017 N/A N/A N/A
065022 City of Concord 6/28/1974 3/21/2017 10/1/2008 5/1/2022 6 060707 Town of Danville N/A 3/21/2017 N/A N/A N/A
065027 City of El Cerrito 6/28/1974 3/21/2017 N/A N/A N/A 060434 City of Hercules 3/26/1976 3/21/2017 N/A N/A N/A 065037 City of Lafayette 7/26/1974 3/21/2017 N/A N/A N/A 065044 City of Martinez 6/28/1974 3/21/2017 N/A N/A N/A 060637 Town of Moraga 11/19/1976 6/16/2009 N/A N/A N/A
060766 City of Oakley 11/1/1974 3/21/2017 N/A N/A N/A
060722 City of Orinda N/A 6/16/2009 N/A N/A N/A
060032 City of Pinole 5/24/1974 3/21/2017 N/A N/A N/A
060033 City of Pittsburg 6/21/1974 3/21/2017 N/A N/A N/A 060034 City of Pleasant
Hill 5/24/1974 3/21/2017 5/1/2003 10/1/2018 9
060035 City of Richmond 6/28/1974 NSFHA 10/1/1995 5/1/2015 10 060036 City of San Pablo 3/15/1974 3/21/2017 10/1/2013 10/1/2013 8 060710 City of San Ramon N/A 6/16/2009 10/1/1991 9/26/2023 6 065070 City of Walnut
Creek 11/8/1974 3/21/2017 10/1/1991 5/1/2011 8

3.12.1. Contra Costa County Floodplain Management Program The Contra Costa County Floodplain Management Program, coordinated by the Contra Costa County Public Works Department, Engineering Services Division, provides floodplain information for existing structures and proposed projects within the Special Flood Hazard Area (SFHZ). The Program is meant for Unincorporated County areas only.

FEMA produced a Flood Insurance Study (FIS) and printed Flood Insurance Rate Maps (FIRMs) for Contra Costa County in July 1987. These watersheds are studied, updated, and remapped periodically, showing areas with a 1% chance of flooding each year. These areas are commonly referred to as 100- year floodplains and are shown as SFHAs on the FIRMs. Flood insurance is mandatory for residential, commercial, and industrial developments within SFHAs, and for federally backed mortgages. Flood insurance may also be required by lenders.

In compliance with the NFIP, the County adopted a Floodplain Management Ordinance. This Ordinance requires that the lowest floor, including basement, for all new structures or substantial improvements to existing structures within a SFHA, shall be elevated one (1) to two (2) feet above the 100-year Base

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Flood Elevation (BFE) for that area. Lower insurance rates are available when the lowest floor is above the BFE. 44

3.12.2. Floodplain Managers
All NFIP participating jurisdictions have a designated Floodplain Manager that is charged with enforcing floodplain regulations, routinely monitoring the floodplains, and providing community assistance such as encouraging owners to maintain flood insurance. A list of Contra Costa County Floodplain Managers (County and cities) can be found in Table 3-21.

Table 3-20. Floodplain Managers
Jurisdiction Department Name Title Phone Number
Contra Costa
County Public Works Larry Gossett Civil Engineer (925) 313-2016 City of Antioch Public Works Scott Buenting City Engineer (925) 779-7035 City of Brentwood Engineering
Development Allen Baquilar Director/City Engineer (925) 516-5405 City of Clayton Engineering
Department Larry Theis City Engineer (925) 673-7300
City of Concord Community
Development Kevin Marstall Director (925) 671-3257
Town of Danville Engineering
Division Steven Jones City Engineer (925) 314-3310
City of El Cerrito Building Raylee Glasser Building Official (510) 215-4635 City of Hercules Public Works Mike Roberts Director (510) 799-8200 City of Lafayette Engineering
Department Mike Moran City Engineer (925) 299-3247
City of Martinez Public Works Joe Enke Director (925) 372-3562 Town of Moraga Public Works Shawn Knapp Town Engineer (925) 888-7027 City of Oakley Public Works Kevin Rohani City Engineer (925) 625-7003 City of Orinda Public Works Sivakumar
Natarajan City Engineer (925) 253-4231
City of Pinole Public Works Sanjay Mishra City Engineer (510) 724-9017 City of Pittsburg Public Works John Samuelson City Engineer (925) 252-4930 City of Pleasant Hill Engineering Omar Adina Assistant
Engineer (510) 620-6868
City of Richmond Community
Services Oscar Dalvalos Chief Building Inspector (510) 215-3030 City of San Pablo Public Works Allan Panganiban Director/ City Engineer (925) 215-3062
City of San Ramon
Public Works
(Engineering
Services Division)
Chen-hsuan Hsieh City Engineer (925) 973-2681
City of Walnut
Creek Public Works Heather Ballenger Director (925) 943-5854 44 Contra Costa County Public Works. (n.d.). FEMA Floodplain Management Program: Overview. Retrieved from https://www.contracosta.ca.gov/332/FEMA-Floodplain-Program.

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3.12.3. Participation Activities
Contra Costa County NFIP participation activities over the last five (5) years include the following:

Provides the following services – permit review, GIS, inspections, and engineering capability.

The City educates private owners and other stakeholders about the importance of flood insurance through public outreach events, workshops, and/or seminars.

Enforces local floodplain regulations and monitors compliance.

Floodplain management regulations meet or exceed FEMA or State minimum requirements.

3.12.3.1. Substantial Damage
Substantial Damage means damage of any origin sustained by a structure whereby the cost of restoring the structure to its before damaged condition would equal or exceed 50% of the market value of the structure before the damage occurred (County Code Title 8, Chapter 82-28 – Floodplain Management).

3.12.3.2. Substantial Improvement
Substantial Improvement means any reconstruction, rehabilitation, addition or improvement of a structure, the cost of which equals or exceeds 50% of the market value of the structure before the "start of construction" of the improvement. This term includes structures that have incurred substantial damage regardless of the actual repair work performed.

The percentage figure must be added to any successive building permits that may be issued or have been issued within a contiguous 10 year span. Substantial improvement is considered to occur when the first alteration of any wall, ceiling, floor or other structural part of the building commences, whether or not that alteration affects the external dimensions of the structure. However, the term does not include:

Any project for improvement of a structure to comply (not required because of flood damage) with existing state or local health, sanitary or safety code specifications which are the minimum necessary to assure safe living conditions.

Any alteration of an "historic structure," provided that the alteration will not preclude the structures continued designation as an "historic structure." (County Code Title 8, Chapter 82-28 – Floodplain Management)

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ASSESSMENT
A risk assessment is the process of measuring the potential loss of life, personal injury, economic injury, and property damage resulting from natural hazards. It allows emergency management personnel to establish early response priorities by identifying potential hazards and vulnerable assets. The process focuses on the following elements.

Hazard Identification: Use all available information to determine what types of disasters may affect a jurisdiction, how often they can occur, and their potential severity.

Vulnerability Identification: Determine the impact of natural, human-caused, and technological hazard events on the population, environment, economy, and lands of the region.

Cost Evaluation: Estimate the cost of potential damage or cost that can be avoided by mitigation.

This Plan is designated to comply with requirements of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, as amended, and Related Authorities and 44 CFR Part 201 (44 CFR § 201.6), which states that local governments must have an approved Hazard Mitigation Plan in place for eligibility of pre-disaster and/or post-disaster mitigation grant funds. This Plan is also designed to comply with the FEMA and the California Office of Emergency Services guidance documents (particularly the Local Mitigation Planning Policy Guide, effective April 19, 2023) and other applicable federal, state, and local regulations. This was accomplished by evaluating the impacts of known natural, human-caused, and technological hazards, prioritizing mitigation alternatives, and coordinating hazard mitigation with other Contra Costa County programs and policies.

4.1 IDENTIFIED HAZARDS
There are a number of hazards that pose a threat to human life, health, and well-being, and this Plan is not meant to compile an exhaustive list. Those addressed in disaster planning are generally categorized as natural, human-caused, or technological. Some hazards are a threat to all geographic areas while others (e.g., flooding) are more limited in their extent.

The Contra Costa County hazards were identified, and their frequency of occurrence was evaluated through a historical analysis using a number of resources, including:
2018 Contra Costa County Hazard Mitigation Plan
2018 and 2023 State of California Hazard Mitigation Plan Hazard planning documents developed by state, federal, and private agencies National Centers for Environmental Information data from 2012 through 2022 National Oceanic and Atmospheric Administration/National Weather Service Space Weather Prediction Center
United States Geological Survey data
FEMA National Risk Index data
Although FEMA only requires and reviews natural hazards in hazard mitigation plans, Contra Costa County decided to rank and mitigate against a comprehensive list of hazard events that could impact the

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Chapter 4: Hazard Identification and Risk Assessment 45 County. Due to the nature of non-natural hazards and the discretionary status regarding their inclusion, the following hazards of interest have been briefly and qualitatively assessed for the sake of public education and informing their inclusion within the hazard ranking and mitigation process. Hazards that have been identified as significant in Contra Costa County and that will be considered in this Plan are listed in Table 4-1.

Table 4-1. Contra Costa County Hazards
Natural Hazards
Climate Change
Dam and Levee Failure
Drought
Earthquake
Flood
Landslide
Sea Level Rise (Coastal Flooding)
Severe Weather (Severe Thunderstorms – Hail, Strong Winds, Tornadoes – Heavy Rainfall, Heat Wave/Extreme Heat) Tsunami
Wildfire
Human-Caused/Technological Hazards
Cybersecurity Threats
Hazardous Materials Incidents
Utility Interruptions
Active Shooter Incidents
Terrorism (Weapons of Mass Destruction)
Per FEMA’s requirement to consider all natural hazards, the following natural hazards were not included because these hazards are not considered significant for the Contra Costa County planning area due to its geographic location and lack of significant historical occurrences.

Avalanche
Hurricane
Ice Storm
Volcanic Activity
Winter Weather (specifically related to snow and blizzards)

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4.2 PRESIDENTIAL DISASTER AND EMERGENCY DECLARATIONS
Table 4-2 lists all federal disaster and emergency declarations in Contra Costa County between 1950 and 2023, according to FEMA. This lists shows the foundation for identifying what hazards pose the most significant risk within the County. 45
Table 4-2. State and Federal Disaster Declarations for Contra Costa County Event
State
Proclamation
Date
Disaster
Number
Federal
Declaration
Date
FEMA
Disaster
Number
Location
Severe Winter Storms,
Flooding, Landslides,
and Mudslides
1/4/2023 2023-01 1/14/2023 DR-4683
Contra Costa
County
(Countywide)
Severe Winter Storms,
Flooding, and
Mudslides
1/4/2023 N/A 1/9/2023
EM-3591
(consolidated
into DR-4683)
Contra Costa
County
(Countywide)
California Covid-19
Pandemic 3/4/2020 2020-01 3/22/2020 DR-4482
Contra Costa
County
(Countywide)
California Covid-19
Pandemic 3/4/2020 2020-01 3/13/2020
EM-3428
(consolidated
into DR-4482)
Contra Costa
County
(Countywide)
Severe Winter Storms,
Flooding, Mudslides 3/7/2017 2017-03 4/1/2017 DR-4308
Contra Costa
County
(Countywide)
Severe Winter Storms,
Flooding, and
Mudslides
2/10/2017 2017-02 3/16/2017 DR-4305
Contra Costa
County
(Countywide)
Severe Storms,
Flooding, and
Mudslides
1/23/2017 2017-01 2/14/2017 DR-4301
Contra Costa
County
(Countywide)
Bay Area Oil Spill 11/9/2007 2007-15 Not Declared N/A
Contra Costa
County
(Countywide)
Severe Storms,
Flooding, Mudslides,
and Landslides
1/12/2006 2006-01 2/3/2006 DR-1628
Contra Costa
County
(Countywide)
Severe Winter Storms
and Flooding Not Available 98-01 2/9/1998 DR-1203
Contra Costa
County
(Countywide)
Severe Storms,
Flooding, Mud and
Landslides
1/2/1997 –
1/31/1997 97-01 1/4/1997 DR-1155
Contra Costa
County
(Countywide)
Winter Storms
Varies from
1/2/1997 –
1/31/1997
97-01 Not Declared N/A
Contra Costa
County
(Countywide)
Severe Winter Storms,
Flooding Landslides,
Mud Flow
Varies from
3/12/1995 –
3/24/1995
95-03 3/12/1995 DR-1046
Contra Costa
County
(Countywide)
45 Federal Emergency Management Agency. (2023). Disaster Declarations for States and Counties. Retrieved from https://www.fema.gov/data-visualization/disaster-declarations-states-and-counties.

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State
Proclamation
Date
Disaster
Number
Federal
Declaration
Date
FEMA
Disaster
Number
Location
Severe Winter Storms,
Flooding, Landslides,
Mud Flows
Varies from
1/9/1995 –
2/17/1995
95-01 1/10/1995 DR-1044
Contra Costa
County
(Countywide)
Severe Winter Storm,
Mud and Land Slides,
and Flooding
1/7/1993 –
2/19/1993 93-01 1/15/1993 DR-979
Contra Costa
County
(Countywide)
Loma Prieta
Earthquake
10/18/1989 –
10/30/1989 89-05 10/18/1989 DR-845
Contra Costa
County
(Countywide)
Severe Storms and
Flooding
2/18/1986 –
3/12/1986 86-01 2/18/1986 DR-758
Contra Costa
County
(Countywide)
High Tides/Storms 1/1/1984 83-06 Not Declared N/A
Contra Costa
County
(Countywide)
Bradford Levee Failure 12/9/1983
1/18/1984 83-05 Not Declared N/A
Contra Costa
County
(Countywide)
Coastal Storms,
Floods, Slides, and
Tornadoes
12/8/1982 –
3/21/1983 82-18 2/9/1983 DR-677
Contra Costa
County
(Countywide)
High Tides and Rains 12/8/1982 N/A Not Declared N/A
Contra Costa
County
(Countywide)
Severe Storms, Flood,
Mudslides, and High
Tide
1/5/1982 –
1/9/1982 N/A 1/7/1982 DR-651
Contra Costa
County
(Countywide)
Torrential Rain, High
Tide, and Winds Not Proclaimed N/A 2/1/1980 EM-3078
Contra Costa
County
(Countywide)
Delta Levee Break 1/23/1980 N/A 1/23/1980 EM-3078
Contra Costa
County
(Countywide)
Drought Not Proclaimed N/A 1/20/1977 EM-3023
Contra Costa
County
(Countywide)
1976 Drought
2/9/1976
2/13/1976
2/24/1976
3/26/1976
7/6/1976
N/A Not Declared N/A
Contra Costa
County
(Countywide)
1970 Storms and
Floods 4/10/1970 N/A Not Declared N/A
Contra Costa
County
(Countywide)

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State
Proclamation
Date
Disaster
Number
Federal
Declaration
Date
FEMA
Disaster
Number
Location
Severe Storms and
Flooding
1/23/1969
1/25/1969
1/28/1969
1/29/1969
2/8/1969
2/10/1969
2/16/1969
3/12/1969
N/A 1/26/1969 DR-253
Contra Costa
County
(Countywide)
California Severe
Storms, Flooding
10/17/1962
10/25/1962
10/30/1962
11/4/1962
N/A 10/24/1962 DR-138
Contra Costa
County
(Countywide)

4.3 RISK ASSESSMENT METHODOLOGY
As part of the Contra Costa County Office of Emergency Services (OES), the risk assessment identifies the natural, human-caused, and technological hazards that have potential impacts on all or portions of the County. Hazard identification, historical occurrences, and risk modeling (where applicable and available for specific hazards) information was collected from multiple sources including, but not limited to:

Environmental Systems Research Institute (Esri)
Federal Emergency Management Agency (FEMA)
National Centers for Environmental Information (NCEI)
National Weather Services (NWS)
United States Geological Survey (USGS)
Local repositories
This information was analyzed to assess the risk and vulnerability of people, property, the environment, and the jurisdiction’s essential operations from these hazards. Furthermore, a risk ranking was performed for the hazards of concern described in this Plan. The risk ranking is an important step in developing an action plan, as it allows jurisdictions to compare the risk factors from one hazard to another. That comparison provides critical information to use in selecting hazard mitigation actions and their priorities.

This process is not only intended to help focus actions on the hazards with the highest ranking, but also to ensure that jurisdictions are aware of the hazards that ranked low yet still pose significant risk.

In order to provide an informed and comprehensive ranking of the hazards addressed in this Plan, a number of factors were considered: probability, extent, vulnerability, and impact. The sum of all the weighted factors for the extent, vulnerability, and impact categories was combined into a final consequence score. Probability multiplied by consequence resulted in a total risk score for each hazard.

Extent + Vulnerability + Impact = Consequence
Consequence x Probability = Total Risk Score

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Chapter 4: Hazard Identification and Risk Assessment 49 These results were determined by following a data driven quantitative assessment, reviewing, and ranking local knowledge from local subject matter experts, and developing other risk elements by the Core Planning Team based on the data collected. These elements were then aggregated to inform the analysis.

At the fundamental level, consequence is an assessment of the potential impact(s) if the hazard incident actually occurs. In this assessment, the consequence of an event (or the impact) will be interdependent on the following factors:

Vulnerabilities (i.e., social, physical, and community conditions) Capabilities and capacities
Mitigation
Characteristics of the hazard event (i.e., magnitude, scale) The frequency/probability of the hazard is not included in assessing the consequence because without the event, there is no consequence or impact.

4.3.1. Probability of Occurrence
The probability of occurrence of a hazard is indicated by a probability factor based on the likelihood of annual occurrence. Numerical probability factors were assigned as follows.

Table 4-3 outlines the probability of occurrence factors used in the risk assessment calculations for this Plan. A significant hazard event is defined as any hazard occurrence that directly or indirectly damages structures or infrastructure, impedes normal business operations, and/or is likely to cause serious or fatal injuries.

Table 4-3. Probability of Occurrence
Probability Description Probability
Factor
High Significant hazard event is likely to occur annually. 3 Medium Significant hazard event is likely to occur within 25 years. 2 Low Significant hazard event is likely to occur within 100 years. 1 Unlikely There is little to no probability of significant occurrence, or the recurrence interval is greater than every 100 years. 0
The assessment of hazard frequency is generally based on past hazard events in the area and professional judgment of local subject matter experts.

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4.3.2. Extent Factors
Extent was assessed in two (2) categories – extent/intensity potential and catastrophic probability of the hazard. Numerical extent factors were assigned as follows.

4.3.2.1. Extent/Intensity Factor
Extent is defined as the range of anticipated intensities of the identified hazards. This category is most commonly expressed using various scientific scales (e.g., Saffir-Simpson, Enhanced Fujita, Modified Mercalli). Extent/Intensity Factors are hazard-specific and are detailed in each hazard profile. Table 4-4 outlines the extent/intensity factors used in the risk assessment calculations for this Plan.

Table 4-4. Extent/Intensity Factor
Probability Description Extent
Factor
High Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity incident. 3
Medium Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity incident. 2
Low Historical and/or probabilistic models/studies for this hazard indicate the possibility of a low-intensity incident. 1
Unlikely Historical and/or probabilistic models/studies for this hazard indicate the possibility of little to no intensity. 0

4.3.2.2. Catastrophic Factor
The probability that a hazard could be catastrophic. Catastrophes are defined as significant incidents that cause sudden and great harm or destruction. Table 4-5 outlines the catastrophic factors used in the risk assessment calculations for this Plan.

Table 4-5. Catastrophic Factor
Probability Description Extent
Factor
High Catastrophic hazard event is likely to occur at least once in 10 years. 3 Medium Catastrophic hazard event is likely to occur at least once between 11 and 50 years. 2
Low Catastrophic hazard event is likely to occur at least once in 51 or more years.
1 No Impact Virtually no probability that this hazard could be catastrophic. 0 Each category was assigned a weighting factor to reflect its significance, consistent with this typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Extent/Intensity and its potential for Catastrophe.

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Chapter 4: Hazard Identification and Risk Assessment 51

4.3.3. Vulnerability Factors
Vulnerabilities were assessed in three (3) categories – population exposure, property exposure, and exposure based on changes in development. Numerical vulnerability factors were assigned as follows.

4.3.3.1. Population Exposure Factor
Population exposure values were assigned based on the percentage of the total population exposed to the hazard event. Table 4-6 outlines the population exposure factors used in the risk assessment calculations for this Plan.

Table 4-6. Population Exposure Factor
Probability Description Vulnerability
Factor
High 30% or more of the population is exposed to the hazard. 3 Medium 15% to 29% of the population is exposed to the hazard. 2 Low 14% or less of the population is exposed to the hazard. 1 No Vulnerability None of the population is exposed to the hazard. 0

4.3.3.2. Property Exposure Factor
Property exposure values were assigned based on the percentage of the total property value exposed to the hazard event. Table 4-7 outlines the property exposure factors used in the risk assessment calculations for this Plan.

Table 4-7. Property Exposure Factor
Probability Description Vulnerability
Factor
High 25% or more of the total assessed property value is exposed to the hazard. 3
Medium 10% to 24% of the total assessed property value is exposed to a hazard. 2
Low 9% or less of the total assessed property value is exposed to a hazard. 1
No Vulnerability None of the total assessed property value is exposed to a hazard. 0

4.3.3.3. Changes in Development
Changes in development in the past five (5) years have increased or decreased the community’s vulnerability/exposure to the hazard. Table 4-8 outlines the changes in development factors used in the risk assessment calculations for this Plan.

Table 4-8. Changes in Development Factor
Probability Description Vulnerability
Factor
High Changes in development have increased the vulnerability/exposure of the community to the hazard by 10% or more. 3
Medium Changes in development have increased the vulnerability/exposure of the community to the hazard between 5% and 9%. 2

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Chapter 4: Hazard Identification and Risk Assessment 52 Probability Description Vulnerability
Factor
Low Changes in development have increased the vulnerability/exposure of the community to the hazard by 4% or less. 1
No Vulnerability Changes in development had no effect and/or have decreased the vulnerability/exposure of the community to the hazard. 0 Each category was assigned a weighting factor to reflect the significance, consistent with those typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Population Exposure, and a weighting factor of one (1) was assigned for Property Exposed and Changes in Development.

4.3.4. Impact Factors
Hazard impacts were assessed in eight (8) categories – population and life/safety, underserved/equity, property damages, economic, environmental, essential operations, future development, and climate change. Numerical impact factors were assigned as follows.

4.3.4.1. Population and Life Safety Factor
Population and life safety values were assigned based on the best available data (historical and probabilistic) for people vulnerable to the hazard event and whether the affected population is likely to experience adverse impacts from the hazard incident. Table 4-9 outlines the population and life safety factors used in the risk assessment calculations for this Plan.

Table 4-9. Population and Life Safety Factor
Probability Description Impact
Factor
High Populations exposed to this hazard are likely to experience significant adverse impacts, such as fatalities and severe injuries. 3 Medium Populations exposed to this hazard are likely to experience some adverse impacts, such as injuries requiring acute medical care. 2 Low Populations exposed to this hazard are likely to experience minimal adverse impacts, such as ambulatory injuries. 1
No Impact Populations exposed to this hazard are not likely to experience significant adverse impacts. 0

4.3.4.2. Underserved/Equity Factor
Underserved/equity values were assigned based on the best available data for underserved populations vulnerable to the hazard event and whether the affected population is likely to experience adverse/disproportionate impacts from the hazard incident resulting in greater disparity in equity. Table 4-10 outlines the underserved/equity factors used in the risk assessment calculations for this Plan.

Table 4-10. Underserved/Equity Factor
Probability Description Impact
Factor
High
Underserved populations exposed to the hazard are likely to experience significant adverse/disproportionate impacts, such as fatalities and severe injuries.
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Chapter 4: Hazard Identification and Risk Assessment 53 Probability Description Impact
Factor
Medium
Underserved populations exposed to the hazard are likely to experience some adverse/disproportionate impacts, such as injuries requiring acute medical care.
2 Low
Underserved populations exposed to the hazard are likely to experience minimal adverse/disproportionate impacts, such as ambulatory injuries.
1 No Impact Underserved populations exposed to the hazard are not likely to experience significant adverse/disproportionate impacts. 0

4.3.4.3. Property Damage Factor
Property damage values were assigned based on the expected total property damage incurred from a hazard incident. It is important to note that values represent estimates of the loss from a major incident based on historical data or probabilistic models/studies. Table 4-11 outlines the property damage factors used in the risk assessment calculations for this Plan.

Table 4-11. Property Damage Factor
Probability Description Impact
Factor
High
More than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to 15% or more of the property value within the jurisdiction.
3 Medium
More than $500,000 but less than $5 Million in property damages is expected from a single major hazard event, or damages are expected to occur to more than 5% but less than 15% of the property value within the jurisdiction.
2 Low
Less than $500,000 in property damages is expected from a single major hazard event or less than 5% of the property value within the jurisdiction.
1 No Impact Little to no property damage is expected from a single major hazard event. 0

4.3.4.4. Economic Factor
An estimation of the impact, expressed in terms of dollars, on the local economy is based on a loss of business revenue, crops, worker wages, and local tax revenues or on the impact on the local gross domestic product (GDP). Table 4-12 outlines the economic factors used in the risk assessment calculations for this Plan.

Table 4-12. Economic Factor
Probability Description Impact
Factor
High Where the total economic impact is likely to be greater than $10 Million. 3
Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2
Low Total economic impact is not likely to be greater than $100,000. 1 No Impact Virtually no significant economic impact. 0

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Chapter 4: Hazard Identification and Risk Assessment 54

4.3.4.5. Environmental Factor
An estimate of the environmental impact from a major hazard event requiring outside resources and support; and/or repair, clean-up, restoration, and/or preservation work. Table 4-13 outlines the environmental factors used in the risk assessment calculations for this Plan.

Table 4-13. Environmental Factor
Probability Description Impact
Factor
High
Environmental impact from a single major hazard event is likely to be significant, requiring extensive outside resources and support; and/or repair, clean-up, restoration, and/or preservation work. 3 Medium
Environmental impact from a single major hazard event is likely to be localized, requiring some outside resources and support; and/or repair, clean-up, restoration, or preservation work.
2 Low
Environmental impact from a single major hazard event is likely to be minimal, requiring little to no outside resources and support, and/or minimal repair, clean-up, restoration, or preservation work. 1 No Impact No environmental impacts from a single major hazard event are likely. 0

4.3.4.6. Essential Operations Factors
The essential operations factor is the impact on the ability of the jurisdiction to meet the essential day-today operational demands and needs of the community after a single major hazard event. Table 4-14 outlines the essential operations factors used in the risk assessment calculations for this Plan.

Table 4-14. Essential Operations Factor
Probability Description Impact
Factor
High
Impact greater than 72 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
3 Medium
Impact between 24 and 72 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
2 Low
Impact less than 24 hours on the ability of the jurisdiction to meet the essential day-to-day operational demands and needs of the community from a single major hazard event.
1 No Impact
No impact on the ability of the jurisdiction to meet the essential dayto-day operational demands and needs of the community from a single major hazard event.
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Chapter 4: Hazard Identification and Risk Assessment 55

4.3.4.7. Future Development Factor
The future development factor is the potential that future development will have on increasing or decreasing the impact/consequence of the hazard. Table 4-15 outlines the future development factors used in the risk assessment calculations for this Plan.

Table 4-15. Future Development Factor
Probability Description Impact
Factor
High Future development trends will significantly increase the impact/consequence of this hazard.
3 Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2
Low Future development trends will minimally increase
impact/consequence of this hazard. 1
No Impact
Future development trends will not increase the impact/consequence of the hazard, and/or may even decrease the impact/consequence of this hazard.
0 4.3.4.8. Climate Change Factor
The potential that climate change will increase the risk of the hazard (i.e., type, location, and range of anticipated intensities of the hazard and impacts). Table 4-16 outlines the climate change factors used in the risk assessment calculations for this Plan.

Table 4-16. Climate Change Factor
Probability Description Impact
Factor
High Climate Change trends will significantly increase the risk of this hazard and its impacts.
3 Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly.
2 Low Climate Change trends will minimally increase the risk of this hazard and its impacts.
1 No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0
Each category was assigned a weighting factor to reflect its significance, consistent with those typically used for measuring the benefits of hazard mitigation actions – a weighting factor of three (3) was assigned for Population and Life Safety, and Underserved/Equity, and a weighting factor of two (2) was assigned for Property Damage. A weighting factor of one (1) was assigned for Economic, Environmental, Essential Operations, Future Development, and Climate Change.

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Chapter 4: Hazard Identification and Risk Assessment 56

4.4 FEMA NATIONAL RISK INDEX SCORES
The National Risk Index (NRI) is a dataset and online tool to help illustrate the United States communities most at risk for 18 natural hazards. These include:

Avalanche
Coastal Flooding
Cold Wave
Drought
Earthquake
Hail
Heat Wave
Hurricane
Ice Storm
Landslide
Lightning
Riverine Flooding
Strong Wind
Tornado
Tsunami
Volcanic Activity
Wildfire
Winter Weather
Not all the hazards on this list are applicable to Contra Costa County; therefore, only those hazards with a defined risk to the County will be included in this Plan, as listed in Section 4.1 (Identified Hazards). The NRI’s goal is to fill gaps in available data and analyses to better inform federal, state, local, tribal, and territorial decision-makers as they develop risk reduction strategies.

In the NRI, risk is defined as the potential for negative impacts as a result of a natural hazard. The Risk Index is based on three (3) components – a natural hazards component (Expected Annual Loss), a consequence enhancing component (Social Vulnerability), and a consequence reduction component (Community Resilience). Using these components, the composite and hazard type Risk Index values are calculated for each community (county and Census Tract). Risk Index values form an absolute basis for measuring Risk within the NRI and are used to generate Risk Index percentiles and ratings across communities. 46 Table 4-17 illustrates the Risk Index rating and score for Contra Costa County.

Table 4-17. Risk Index Score for Contra Costa County (FEMA National Risk Index) Jurisdiction Rating Score
Contra Costa County Very High 99.6
Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Social Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk Index).

4.4.1. Expected Annual Loss
The Expected Annual Loss (EAL), the natural hazards component of the NRI, represents the average economic loss in dollars resulting from natural hazards each year. It is calculated for each hazard type and quantified loss for relevant consequence types such as, buildings, people, and agriculture. The EAL score and rating represents a community’s relative level of expected losses each year when compared to other communities at the same level. Since the score is associated to a community’s risk; the higher EAL score results in a higher Risk Index score. 47 Table 4-18 illustrates the EAL rating and score for Contra Costa County.
46 Federal Emergency Management Agency. (2023). Determining Risk. Retrieved from https://hazards.fema.gov/nri/determining-risk.
47 Federal Emergency Management Agency. (2023). Expected Annual Loss. Retrieved from https://hazards.fema.gov/nri/expected-annual-loss.

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Chapter 4: Hazard Identification and Risk Assessment 57 Table 4-18. Expected Annual Loss for Contra Costa County (FEMA National Risk Index) Jurisdiction Rating Score
Contra Costa County Very High 99.6
Expected Annual Loss scores are calculated utilizing an equation that combines values for exposure, annualized frequency, and historic loss ratios (Expected Annual Loss = Exposure x Annualized Frequency x Historic Loss Ratio).

An EAL score and rating is calculated independently for each consequence type (i.e., buildings, population, and agriculture) for each county and Census Tract. The population EAL is measured in fatalities and injuries while the building and agriculture values are measured in dollars. However, for consistency in the unit of measurement, the population EAL was monetized into population equivalence using a value of statistical life (VSL) approach where each fatality or 10 injuries is treated as $11.6 Million of economic loss.

4.4.2. Social Vulnerability
Social vulnerability, the consequence enhancing risk component of the NRI, measures the susceptibility of social groups to the adverse impacts of natural hazards, including disproportionate death, injury, loss, or disruption of livelihood. The Social Vulnerability score and rating represent the relative level of a community’s social vulnerability compared to all other communities at the same level. A higher Social Vulnerability score results in a higher Risk Index score. 48 Table 4-19 illustrates the Social Vulnerability rating and score for Contra Costa County.

Table 4-19. Social Vulnerability for Contra Costa County (FEMA National Risk Index) Jurisdiction Rating Score
Contra Costa County Relatively Moderate 47.4
Social Vulnerability is measured using the Social Vulnerability Index (SoVI) published by the University of South Carolina’s Hazards and Vulnerability Research Institute (HVRI).

4.4.3. Community Resilience
Community resilience, the consequence reduction risk component, measures the ability of a community to prepare for anticipated natural hazards, adapt to changing conditions, and withstand and recover rapidly from disruptions. The Community Resilience score and rating represent the relative level of a community’s resilience compared to all other communities at the same level. Since the score is inversely proportional to a community’s risk; the higher Community Resilience score results in a lower Risk Index score. 49 Table 4-20 illustrates the Community Resilience rating and score for Contra Costa County. 48 Federal Emergency Management Agency. (2023). Social Vulnerability. Retrieved from https://hazards.fema.gov/nri/social-vulnerability.
49 Federal Emergency Management Agency. (2023). Community Resilience. Retrieved from https://hazards.fema.gov/nri/community-resilience.

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Chapter 4: Hazard Identification and Risk Assessment 58 Table 4-20. Community Resilience for Contra Costa County (FEMA National Risk Index) Jurisdiction Rating Score
Contra Costa County Relatively High 75.0
Community Resilience is measured using the Baseline Resilience Indicators for Communities (HVRI BRIC) published by the University of South Carolina's Hazards and Vulnerability Research Institute (HVRI).

4.5 TOTAL RISK SCORES
Table 4-21 represents the overall risk scores for Contra Costa County, based on the Risk Assessment Methodology defined at the beginning of this section. Following a data-driven quantitative assessment, reviewing and ranking local knowledge from local subject matter experts, and developing other risk elements by the Core Planning Team based on data collected. These elements were aggregated to inform the analysis. The hazards are ranked from highest to lowest based on the Total Risk Score.

However, if the Risk Score is the same, then it is ranked by the Probability Factor. If the Probability Factor is the same, then it is ranked by the sum of the Impact Factor. If the Impact Factor is the same, then it is ranked by the sum of the Vulnerability Factor.

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Chapter 4: Hazard Identification and Risk Assessment 61

4.6 HAZARD PROFILES

4.6.1. Climate Change

4.6.1.1. Description
The National Oceanic and Atmospheric Administration (NOAA) defines climate change as any significant change in the measures of climate for extended periods of time, usually over decades or longer (e.g., major long-term changes in temperature, precipitation, ocean heat, sea level, sea ice extent) that affect life on Earth. 50
In California, annual temperatures have increased over one (1) degree Fahrenheit (1°F) while some areas have exceeded two (2) degrees Fahrenheit (2°F).
51 The State can expect warmer and drier
conditions, reduction in winter snow, an increase in winter rainfall, sea level rise, changes in the water cycle, and an increase in extreme weather events. However, due to the geographical differences throughout the State, impact may vary from location to location. In Contra Costa County, an increase in extreme heat events, reduced air quality, sea level changes, water supply issues, and an increase in storm severity and frequency resulting in flood events are expected due to climate change. 52 The San Francisco Bay Region, which includes Contra Costa County, average temperatures are expected to increase between three (3) and 4.5 degrees Fahrenheit by 2050. 53 The five (5) main greenhouse gases consist of carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and water vapor. These gases are naturally part of the Earth’s atmosphere creating the greenhouse effect which allows conditions to be livable. However, increasing the levels of these greenhouse gases in the atmosphere results in heat being trapped near the Earth’s surface causing the global average temperature to increase. 54 Carbon dioxide is a crucial component of the Earth’s atmosphere and human activities have increased its amount in the air by 50% since the start of the Industrial Revolution, in the late 1700s. Additionally, other greenhouse gases amounts continue to increase.
55 Climate Change Indicators
Earth’s climate has changed throughout its history, it is part of Earth’s cycle. However, scientists from agencies such as NASA, NOAA, and the Intergovernmental Panel on Climate Change (IPCC) agree that climate change is occurring at a faster rate than expected. Global surface temperatures continue to rise unequivocally as a result of greenhouse gas emissions from human activities. Between 2011 and 2020, global surface temperatures were 1.1 degrees Celsius (1.1°C) higher than between 1850 through 1900 average, with larger increases over land (1.6°C) than over the ocean (0.9°C). Global surface temperatures have increased at a faster rate since 1970 than any other 50-year period over the last 2,000 50 National Oceanic and Atmospheric Administration. (n.d.). What’s the Difference Between Climate and Weather? Retrieved from https://www.noaa.gov/explainers/what-s-difference-between-climate-and-weather. 51 California Climate Adaptation Strategy. (2023). Summary of Projected Climate Change Impacts on California.

Retrieved from https://climateresilience.ca.gov/overview/impacts.html. 52 Contra Costa County. (2015) Contra Costa County Climate Action Plan. Retrieved from https://www.contracosta.ca.gov/DocumentCenter/View/39791/Contra-Costa-County-Climate-Action-Plan?bidId=. 53 California Climate Adaptation Strategy. (2023). Region: San Francisco Bay Area. Retrieved from https://climateresilience.ca.gov/regions/sf-bay-area.html. 54 National Aeronautics and Space Administration. (n.d.). What is the Greenhouse Effect? Retrieved from https://climate.nasa.gov/faq/19/what-is-the-greenhouse-effect/. 55 National Aeronautics and Space Administration. (n.d.). The Causes of Climate Change. Retrieved from https://scied.ucar.edu/learning-zone/how-climate-works/carbon-dioxide.

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Chapter 4: Hazard Identification and Risk Assessment 62 years. 56 The warmest years on record were between 2015 and 2023 with 2023 on track to be the warmest year on record.
57 Increasing global temperatures have affected weather patterns throughout the planet. In the United States, since 1950, the number of extreme heat events have increased while record low temperatures events have decreased, and an increase of heavy rainfall events has been recorded. Other climate change impacts include increasing ocean temperatures and ocean acidification, shrinking ice sheets, retreading glaciers, decreasing snow cover, sea level rise, and declining artic sea ice. 58 The United States Environmental Protection Agency, in collaboration with other data contributors, compiled seven (7) climate indicators that provide evidence of changes and their impacts on the population and environment. The seven (7) climate indicators are listed in Table 4-22. 59 Table 4-22. Climate Change Indicators in the United States Indicator Description
Greenhouse Gases
This indicator characterizes emissions of major greenhouse gases (i.e., carbon dioxide, nitrous oxide, methane, chlorofluorocarbons (CFCs), and water vapor) resulting from human activities, the concentration of these gases in the atmosphere, and how emissions and concentrations have changed over time.

Weather and Climate
Rising global temperatures are associated with widespread changes in weather patterns. Extreme weather events (e.g., heat waves and heavy precipitation) are likely to become more frequent or more intense as a result of climate change.

Oceans Weather is heavily influenced on local and global scales by oceans while changes in climate change can alter many of the ocean’s properties.

Snow and Ice
Earth’s snow and ice coverage can be significantly altered with relatively minor changes in temperatures. As a result of increasing temperatures, snow and ice coverage has decreased globally.

Health and Society Changes in climate can have adverse effects on public health, agriculture, water supplies, energy production and use, land use and development, and recreation.

Ecosystems Ecosystems are what provides humans with food, clean water, and a variety of other services. Changes in climate can disrupt the functioning ecosystems.

4.6.1.2. Hazard Location
Climate change is occurring globally with wide variations based on location and latitude. The polar regions have experienced particularly rapid changes in climate with increased ice melting and more sea ice free days. Figure 4-1 illustrates the global average temperature between 1993 and 2022 in degrees Fahrenheit per decade.
56 Intergovernmental Panel on Climate Change. (2023). Climate Change 2023 Synthesis Report: Summary for Policymakers. Retrieved from https://www.ipcc.ch/report/ar6/syr/downloads/report/IPCC_AR6_SYR_SPM.pdf. 57 World Meteorological Organization. (2023). 2023 Shatters Climate Records, With Major Impacts. Retrieved from https://wmo.int/news/media-centre/2023-shatters-climate-records-major-impacts. 58 National Aeronautics and Space Administration. (n.d.). How Do We Know Climate Change Is Real? Retrieved from https://climate.nasa.gov/evidence/.
59 United States Environmental Protection Agency. (n.d.). Climate Change Indicators: View the Indicators.

Retrieved from https://www.epa.gov/climate-indicators/view-indicators.

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Chapter 4: Hazard Identification and Risk Assessment 63 Figure 4-1. Global Temperature Trends (1993 – 2022) 60

4.6.1.3. Hazard Extent/Intensity
In 1990 and 1992, the Intergovernmental Panel on Climate Change (IPCC) developed long-term emission scenarios which have been extensively used in climate change, its impact, and climate change mitigation analysis. 61 Throughout the years, these scenarios have been evaluated and updated based on the current scientific data and technology available at the time of the update. These scenarios were developed to account for the uncertainty on how societies and government will deal with human emission of greenhouse gases in the future. Table 4-23 provides an overview of the five (5) major IPCC scenarios used in the 2021 Report. 62
60 Climate.gov. (2023). Climate Change: Global Temperature. Retrieved from https://www.climate.gov/newsfeatures/understanding-climate/climate-change-global-temperature. 61 Intergovernmental Panel of Climate Change. (2000). IPCC Special Report: Emissions Scenarios. Retrieved from https://www.ipcc.ch/site/assets/uploads/2018/03/sres-en.pdf. 62 University Corporation for Atmospheric Research. (2021). Compare IPCC Scenarios Interactive. Retrieved from https://scied.ucar.edu/interactive/compare-ipcc-scenarios.

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Chapter 4: Hazard Identification and Risk Assessment 64 Table 4-23. IPCC Scenarios
Scenario Description Expected Temperature
Increase
SSP1-1.9
(Most Optimistic)
No increase in greenhouse gas emissions. Global carbon
dioxide emissions do not increase (are cut to net zero) by approximately 2050.

1.5°C
SSP1-2.6
(Next Best)
Small levels of greenhouse gas emissions. Severe carbon dioxide emissions cuts, and no longer increase (are cut to net zero) after 2050.

1.8°C
SSP2-4.5
(Middle of the
Road)
Medium greenhouse gas emissions scenario. Carbon dioxide emissions start to fall around mid-century but do not reach net zero until after 2100.

2.7°C
SSP3-7.0
(Dangerous)
Medium to high greenhouse gas emissions scenario.

Emissions rise steadily, with total carbon dioxide double the current level by 2100.

3.6°C
SSP5-8.5
(Avoid at All
Costs)
Highest greenhouse gas emissions scenario. Yearly
emissions amounts are double current levels by 2100. 4.4°C The Scenarios are based on Shared Socioeconomic Pathways (SSPs), which determine likely emissions of greenhouse gases based on different climate policies.

4.6.1.4. Warning Time
Though warming has not been uniform across the planet, the upward trend in the globally averaged temperature shows that more areas are warming than cooling. According to NOAA's 2021 Annual Climate Report the combined land and ocean temperature has increased at an average rate of 0.14 degrees Fahrenheit (0.08 degrees Celsius) per decade since 1880; however, the average rate of increase since 1981 has been more than twice as fast: 0.32 °F (0.18 °C) per decade.

The amount of future warming Earth will experience depends on how much carbon dioxide and other greenhouse gases we emit in coming decades. Today, our activities—burning fossil fuels and clearing forests—add about 11 billion metric tons of carbon (equivalent to a little over 40 billion metric tons of carbon dioxide) to the atmosphere each year. Because that is more carbon than natural processes can remove, atmospheric carbon dioxide increases each year.

4.6.1.5. Probability and Frequency
According to the 2017 U.S. Climate Science Special Report, if yearly emissions continue to rapidly increase, as they have since 2000, models project that by the end of this century, global temperature will be at least 5 degrees Fahrenheit (5°F ) warmer than the 1901 – 1960 average, and possibly as much as

10.2 degrees Fahrenheit (10.2°F) warmer. If annual emissions increase at a slower rate and begin to significantly decline by 2050, models project temperatures would still be at least 2.4 degrees (2.4°F) warmer than the first half of the 20th century, and possibly up to 5.9 degrees Fahrenheit (5.9°F) warmer.

Figure 4-2 illustrates hypothetical pathways of carbon emissions (i.e., representative concentration pathways or RCPs) throughout the 21st century based on different possible energy policies and economic growth patterns. Figure 4-3 illustrates projected temperature increase relative to the 1901-1960 average depending on which RCP we eventually follow. 63
63 U.S. Global Change Research Program. (2017). Fourth National Climate Assessment: Executive Summary.

Retrieved from https://science2017.globalchange.gov/chapter/executive-summary/.

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Chapter 4: Hazard Identification and Risk Assessment 65 Figure 4-2. Projected Annual Global Carbon Emissions
Figure 4-3. Projected Global Temperatures
Probability of Future Hazard Events
In California and western North America, climate observations have shown a trend toward warmer temperatures with an increase in extremely hot days and nights, an increase in the area burned by wildfires, a smaller fraction of precipitation falling as snow, an increase in frequency of drought and an increase in consecutive dry years, and sea level rise is expected to continue to increase flooding and erosion on beaches, bluffs, and cliffs. Research suggests that California will continue to experience hotter and drier conditions, reductions in winter snow and increases in winter rains, sea level rise, significant changes to the water cycle, and an increase in extreme weather events. Table 4-24 summarizes the potential impacts in California due to climate change.

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Chapter 4: Hazard Identification and Risk Assessment 66 Table 4-24. Climate Change Impacts in California 64
Climate Impact Historical Trends Future Direction
of Change
Confidence for
Future Change
Temperature Warming Warming Very High
Sea Level Rise Rising Rising Very High
Annual Precipitation No significant trends Unknown Low
Intensity of Heavy Precipitation
Events No significant trends Increasing Medium-High
Frequency of Droughts Increasing No significant trends Increasing Medium-High Acres Burned by Wildfire Increasing Increasing Medium-High

4.6.1.6. Past Events
Climate change has occurred throughout Earth’s history due to variations in the Earth’s inclination to the sun, volcanic activity, and other factors (e.g., asteroid impacts and the amount of solar radiation reaching the earth’s surface rises and falls). Earth’s temperature correlates to the amount of solar radiation arriving at the surface and the climate with it.

In relatively recent history, the last glacial period (i.e., the Ice Age), occurred from c. 110,000 to 12,000 years ago. This most recent glacial period is part of a larger pattern of glacial and interglacial periods known as the Quaternary glaciation (c. 2,588,000 years ago to present). From this point of view, scientists consider this "ice age" to be merely the latest glaciation event in a much larger ice age that dates back over two (2) million years and is still ongoing.

During this last glacial period, there were several changes between glacier advance and retreat. The Last Glacial Maximum, the maximum extent of glaciation within the last glacial period, was approximately 22,000 years ago. While the general pattern of global cooling and glacier advance was similar, local differences in the development of glacier advance and retreat make it difficult to compare the details from continent to continent. Generally, temperature variation and glaciation patterns have lagged in atmospheric carbon dioxide (CO2) content.

Figure 4-4 depicts global variations during the past 400,000 years as a correlation between temperature and atmospheric CO2 content in part per million. 65
64 Contra Costa County. (2023). Draft Contra Costa County Climate Action Plan. Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.
65 Hogg, A.M. (2008). Glacial Cycles and Carbon Dioxide: A Conceptual Model. Retrieved from https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2007GL032071.

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Chapter 4: Hazard Identification and Risk Assessment 67 Figure 4-4. Temperature and Atmospheric CO2 Variation the Past 400,000 Years For 22,000 years ago, the planet has slowly warmed, and the glaciers retreated to high northern latitudes and mountains. In the last several decades, human activity has likely led to a rapid increase in atmospheric CO2 and a matching rise in global temperature. The result has been that climate change may be accelerating. Figure 4-5 provides a graphical depiction of yearly average surface temperature compared to the 20th century average.

Figure 4-5. Global Average Surface Temperature (1880 – 2022)

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Chapter 4: Hazard Identification and Risk Assessment 68

4.6.1.7. Vulnerability and Impacts
Climate change is expected to alter many aspects of the County’s climate, including temperature, precipitation patterns, and sea levels, potentially exacerbating both the severity and geographic scope of climate hazards. Contra Costa County is most vulnerable to hazards associated with changes in air quality, drought, extreme heat, flooding, human health hazards, landslides, severe storms, sea level rise, shoreline flooding, and wildfire. 66 Drought, flood, landslides, sea level rise, severe weather (includes heat wave/extreme heat), and wildfire are individual hazards in this Hazard Mitigation Plan. Vulnerability and impacts for each of these hazards are discussed in further detail under each hazard profile.

Life Safety and Health: Although climate change will affect everyone, some populations in the County are likely to be affected more than others. This can include the risk of injury, death, property damage or destruction, and can also include economic impacts and loss of income, behavioral and mental health impacts, and an overall decrease in quality of life. Impacted Communities, who have been historically under-resourced and are already more likely to face constraints (e.g., limited financial resources, reduced access to education and job opportunities, and increased exposure to environmental hazards), are likely to be further impacted as climate change related hazards increase in frequency and severity. Populations especially vulnerable to climate change are concentrated along the northern waterfront of the County, within unincorporated communities such as North Richmond, Bay Point, and Pacheco. Additionally, this population faces greater vulnerabilities because they may be less able to withstand a temporary loss of income if jobs are affected by these hazards.

Lack of access to resources not only includes financial resources, but also communication, transportation, education, and other community services. Even people who are relatively financially stable can be disproportionately affected by climate change related hazards if physically or socially isolated. For example, individuals with limited English proficiency may not be able to interact with officials, and those without lifelines (e.g., transportation, broadband internet or other forms of reliable communication), may not be able to get accurate and timely information about hazardous situations (e.g., evacuation order).

This often delays this population’s ability to obtain the resources needed to prepare for or respond to an emergency. Renters face similar vulnerabilities and impacts because even if they have the financial resources to adapt to changing conditions, they have limited control over their home.

Physical constraints can also make people more susceptible to climate change. Individuals with disabilities may find it harder to prepare for hazardous events, and some hazards can exacerbate chronic health conditions and create a greater threat for people with these conditions. Young children (under 10 years old) and seniors (65 years old and over) are disproportionately affected by some hazards (e.g., extreme heat and air pollution) even if they are entirely healthy. The senior population that lives alone is often at greater risk because they are more likely to be socially isolated. People with physical constraints are also more likely to need assistance during evacuations. The health equity of populations is also closely associated with racism, historic discrimination, and a wide range of socioeconomic conditions.

The Contra Costa County Climate Action Plan, updated in 2024, has identified the following underserved and at risk population that could be uniquely vulnerable to the climate change related hazards within this Plan:
67 66 Contra Costa County. (2023). Draft Contra Costa County Climate Action Plan. Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.
67 Ibid.

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Chapter 4: Hazard Identification and Risk Assessment 69 Children (under 10 years old) are susceptible to allergens and pollution due to wildfires, extreme heat, flooding, and landslides. Children are known to spend more time outdoors which exposes them to more of these hazards. Furthermore, children are physiologically less able to regulate their body temperatures than adults and may not be able to recognize the need to hydrate and cool down when overheated. In Contra Costa County, there are approximately 130,099 (11.2%) children under 10 years old as of 2022.68 The highest concentration of children live in parts of the cities of Concord, Richmond, Pittsburg, Brentwood, and San Ramon.

Households in Poverty are households with an income below the poverty line which is $24,300 for a household of four (4) people. This population is exposed to extreme heat, flooding, landslides, severe weather, sea level rise, and wildfires. Approximately 7,600 households in Contra Costa County live in poverty. The areas with the highest concentrations of poverty in Contra Costa County occur in central Richmond, North Richmond and San Pablo, tracts of Concord and Martinez, and in Bay Point, Pittsburg, and Antioch.

Low Income Households are those with an income of 80% or less of the median income in Contra Costa County ($104,400). Approximately 25,340 households (41.0%) in the County are within the low income category. Low income households may have fewer financial resources to devote to preparing for and recovering from the effects of climate change. This population is extremely vulnerable to flooding because many of these households are located within or near a flood zone or dam inundation areas, especially in the north and east portions of the County. High concentrations of low income households vulnerable to shoreline flooding occur in Rodeo, Crockett, the islands in the Delta, and Discovery Bay.

Outdoor Workers are directly exposed to poor air quality, extreme heat, and drought, are facing increased health risks and economic hardships. These include, but are not limited to, constructions workers, agriculture workers, and recreation.

Individuals Experiencing Homelessness are those who do not have a permanent home, including those who live in their vehicles or temporary shelters. This population is highly exposed to extreme heat, flooding, sea level rise, severe weather, and wildfires. Furthermore, they face the risk of health complications, minimal access to healthcare, and loss of temporary shelters. In 2024, there are 2,843 people experiencing homelessness in Contra Costa County, an 18.5% increase from 2023.
69 Individuals Living on Single Access Roads are those living in areas with a single route in and out (i.e., accessible via one (1) roadway) of the neighborhood or area. This includes several communities in the Delta and in the hillside areas of central and western Contra Costa County.

This population is uniquely vulnerable to landslides, wildfires, flooding, and sea level rise because these hazards can cause damage and/or block essential roadways. These communities can become isolated from the community and emergency services. For example, in Contra Costa County, Bethel Island and Delta islands are accessible via a single road.

Seniors (65 years old and over) and Seniors Living Alone are uniquely vulnerable to extreme heat, flooding, severe weather, landslides, and wildfires. The physiology of seniors makes them especially vulnerable to the health effects of extreme heat and wildfires. Furthermore, physical limitations may not allow seniors to evacuate in the event of an emergency. In Contra Costa 68 United States Census Bureau. (2022). S0101: Age and Sex (2022: ACS 1-Year Estimates Subject Tables).

Retrieved from https://data.census.gov/table/ACSST1Y2022.S0101?g=050XX00US06013. 69 Contra Costa Health. (2024). Health, Housing, and Homelessness Data Reports (Point-in-Time Count).

Retrieved from https://www.cchealth.org/services-and-programs/homeless-services/data.

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Chapter 4: Hazard Identification and Risk Assessment 70 County, there are approximately 201,136 seniors (17.4%). 70 Due to institutional and residential
retirement communities, central Contra Costa County, Bethel Island, the eastern part of the City of Richmond, and several part of the City of Walnut Creek have a particularly high concentration of seniors. Seniors living alone may have caretakers, but for the most part are living alone. This population is generally more vulnerable compared to other seniors because they may lack access to social connections and community support to assist in preparedness and responding to emergency events (e.g., evacuations). In 2022, there were approximately 33,102 (8.0%) seniors living alone.71
Individuals with Chronic Illnesses are those that have long term or permanent health conditions that can be exacerbated by climate change related hazards. These health problems include, but are not limited to cancer, respiratory and cardiovascular diseases, and arthritis. This population is uniquely vulnerable to flooding, extreme heat, severe weather, and wildfires.

People with Limited English Proficiency may not be aware of climate related hazards and emergency situations in a timely manner. Other languages spoken in the County are primarily Spanish, Mandarin, Cantonese, Tagalog, and Persian. Other than English, the most commonly spoken language in Contra Costa County is Spanish (18.7%). The United States Census Bureau estimates that 14.5% of the County’s residents speak English “less than very well.”72 The higher proportion with limited English proficiency occurs in the cities of Richmond, Concord, and San Pablo.

Individuals without Access to Lifelines are those who do not have access to basic technology or services (e.g., transportation or modern communication). These individuals may live in areas where these lifelines are not available or feasible, may not be able to afford these, or for personal reasons may choose to not have them. This population is uniquely vulnerable to flooding and wildfire. Furthermore, those without access to lifelines may be unaware of an approaching emergency, may be unable to evacuate in a timely manner, and may become isolated if power services or transit systems are not working.

Undocumented Individuals includes people who do not have formal permission to live in the United States (i.e., do not have citizenship, permanent residency, visas, or other similar status).

This population is uniquely vulnerable to extreme heat, flooding, landslides, severe weather, and wildfire. Many individuals within this population have outdoor occupations or work in highly unregulated environments which make them vulnerable to extreme heat and poor air quality due to wildfires. Additionally, many of the undocumented population are likely to fall in the household in poverty or low income categories and are more likely to live in low lying areas making vulnerable to flood and severe weather events. There are no official counts of the number of undocumented individuals within Contra Costa County.

Table 4-25 outlines the population in Contra Costa County where vulnerabilities to climate change exceed the County median, as compared to United States percentages and the differences thereof. There are 42 Census Tracts in Contra Costa County that are identified as disadvantaged by the United States Council on Environmental Quality (ACEQ). According to the ACEQ, a disadvantaged community is 70 United States Census Bureau. (2022). S0101: Age and Sex (2022: ACS 1-Year Estimates Subject Tables).

Retrieved from https://data.census.gov/table/ACSST1Y2022.S0101?g=050XX00US06013. 71 United States Census Bureau. (2022). DP02: Selected Social Characteristics in the United States (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP02?g=050XX00US06013. 72 United States Census Bureau. (2022). S1601: Language Spoken at Home (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1601?g=050XX00US06013.

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Chapter 4: Hazard Identification and Risk Assessment 71 identified if it is located in a Census Tract that is at or above the threshold for one (1) or more environmental, climate, or other burdens, and at or above the threshold for associated socioeconomic burdens, including poverty and language barriers. 73
Table 4-25. Neighborhoods At Risk Table (Contra Costa County, CA) Indicators 2022* Population Percentage United States
Percentage
Percent
Difference
(County vs. United States)
People under 5
years old 62,829 6.0% 5.7% 5.0%
People over 65
years old 190,307 12.5% 16.5% -28.0%
People of color
(including Hispanic) 690,897 80.6% 41.1% 65.0%
People who do not
speak English well 65,143 11.6% 4.1% 96.0%
People without a
high school degree 83,135 20.1% 10.9% 59.0%
Families in poverty 16,650 10.2% 8.8% 15.0%
Housing units that
are rentals 134,149 51.0% 35.2% 37.0%
Households with no
car
20,801 7.3% 8.3% -13.0%
People with
disabilities 130,100 12.5% 12.9% -3.0%
People without
health insurance 53,839 8.4% 8.7% -4.0%
* ACS 5-year estimates: 2022 represents average characteristics between 2018 and 2022.

Table 4-28 outlines the vulnerability of the total population exposed to climate change, and Table 4-29 outlines the climate change impacts to population and life safety, underserved/equity population, and essential operations, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Property Damage and Critical Infrastructure: The loss of key buildings and infrastructure systems can create potentially severe effects throughout the County. The loss of homes in a natural disaster means that a potentially large group of people must be temporarily housed while their homes go through the lengthy reconstruction process. Meanwhile, some people may choose not to return to their former community. Damages to businesses can cause economic harm to business owners and employees as well as members of various communities. For example, sea level rise and coastal flooding can interrupt many of the industrial and manufacturing centers located along the Contra Costa County shoreline, creating temporary or permanent loss of income for their employees, with possible cascading impacts such as harming the tax base and well-being of various communities.

Contra Costa County’s infrastructure networks are connected to much larger regional, State, and national systems. These systems are vulnerable to disruption from outside of Contra Costa County, resulting in a loss of service to community members. For example, most of the water used in the unincorporated areas of the County is imported from the Sierra Nevada through a complex system of pumps, aqueducts, and reservoirs. Damage at any point along this system can affect Contra Costa County’s water supply, 73 United States Council of Environmental Quality. (n.d.). Climate and Economic Justice Screening Tool:

Methodology. Retrieved from https://screeningtool.geoplatform.gov/en/methodology.

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Chapter 4: Hazard Identification and Risk Assessment 72 causing restricted water service. Many components of this system pass through eastern Contra Costa County and other low-lying areas of the Delta region, where they are particularly vulnerable to sea level rise. Buildings and infrastructure do not need to be physically damaged to trigger a loss of service. For example, extreme heat makes the machinery of the power grid run less efficiently and simultaneously increases demand to meet greater cooling needs. This combination raises the risk of grid overloading and causing brownouts or blackouts. Similarly, drought conditions harm water delivery services but do not cause physical damage to pipes or water treatment plants. Economic drivers can also be affected without experiencing physical damage, such as when businesses are forced to close because of a public health emergency. 74
Table 4-28 outlines the total property value exposed to climate change and how the changes in development in the past five (5) years, have affected the vulnerability of the community to climate change.

Table 4-29 outlines the climate change impact on total property damage, potential future development, and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Environment: The unprecedented rate of change in the climate system can rapidly create local conditions unfavorable to ecosystems, killing them or forcing them out of the area before they have the chance to adapt. Damage or loss of local ecosystems and natural resources is harmful for its own sake, but it also affects the people and economy of Contra Costa County. Many ecosystems provide important services for communities, such as protection against floods and high winds, groundwater recharge and filtration, and home for pollinators and beneficial species. The natural environment provides recreational and tourism opportunities, contributes to the valued character of Contra Costa County, and helps maintain a high quality of life.

Climate change often results in species and even entire ecosystems being forced out of their historical range and moving to areas that provide their preferred living conditions. In some cases, there may no longer be places in Contra Costa County that can support these ecosystems, and they disappear from the area. For example, the conifer forests in the hills of western portion of the County depend on fog and its cooling benefit in summer temperatures. As temperatures increase and coastal fog is expected to decrease, these trees may not survive. Habitat loss can also exacerbate this problem. For example, in a natural system, wetlands will migrate inland as sea levels rise. However, if the inland areas are blocked by development or other barriers, the wetlands cannot migrate and could disappear.

Even if overall temperature and precipitation patterns remain favorable to key ecosystems and natural resources, the increased frequency and severity of some climate change related hazards can harm these important community assets. For example, many ecosystems in the State (e.g., forests) rely on naturally occurring wildfires to remove dead vegetation and return nutrients to the soil, and some species rely on fires reproduction. However, as wildfires are increasing in intensity, trees that could survive relatively low level fires may not be able to survive much more severe blazes.

Table 4-29 outlines climate change’s impact on the environment, as outlined in the risk assessment methodology in Section 4.3 of this Plan.
74 Contra Costa County. (2023). Draft Contra Costa County Climate Action Plan. Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.

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Packet Pg. 145 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) Climate Change Medium Significant hazard event is likely to occur within 25 years. 2 N/A Climate Change
Extent/Intensity Medium Historical and/or probabilistic models/studies for this hazard indicate the possibility of a medium-intensity incident. 2 6Catastrophic Low Catastrophic hazard event is likely to occur at least once in 51 or more years. 1 3 Climate Change
Population Exposure High 30% or more of the population is exposed to the hazard. 3 9Property Exposure Low 9% or less of the total assessed property value is exposed to a hazard. 1 2Changes inDevelopment Low Changes in development have increased thevulnerability/exposure of the community to the hazard by 4%or less. 1 1 Climate Change
Population and LifeSafety Low Populations exposed to this hazard are likely to experience minimal adverse impacts, such as ambulatory injuries. 1 3Underserved/Equity Low Underserved populations exposed to the hazard are likely toexperience minimal adverse/disproportionate impacts, suchas ambulatory injuries. 1 3 Property Damage Low
Less than $500,000 in property damages is expected from asingle major hazard event or less than 5% of the propertyvalue within the jurisdiction. 1 2 Economic Low Total economic impact is not likely to be greater than $100,000. 1 1

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Environmental impact from a single major hazard event islikely to be minimal, requiring little to no outside resourcesand support, and/or minimal repair, clean-up, restoration, orpreservation work. 1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction tomeet the essential day-to-day operational demands andneeds of the community from a single major hazard event. 1 1
Future Development Low Future development trends will minimally increase impact/consequence of this hazard. 1 1Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3

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Chapter 4: Hazard Identification and Risk Assessment 75

4.6.1.8. FEMA NRI Expected Annual Loss Estimates
There are no clear, quantitative assessments of losses due solely to climate change. Losses from drought, flood, landslides, severe weather, sea level rise, and wildfire are almost certainly exacerbated by climate change. The impacts of climate change not only result in more frequent and intense disaster incidents, but they also result in secondary impacts in areas such as public health, water quality, and the cost of food and other essential resources.

4.6.1.9. FEMA Climate Change Risk Index Scores
The FEMA NRI does not assess climate change events. Table 4-30 represents the Climate Change Total Risk Score for Contra Costa County, based on the Risk Assessment Methodology, as defined in this Plan. For further details on how the probability, extent, vulnerability, and impact factors were calculated, please refer to Table 4-26 through Table 4-29. Additional details on how the Total Risk Score was calculated can be found in the Risk Assessment Methodology in Section 4.3 of this Plan.

Table 4-30. Climate Change Total Risk Score
Hazard
Event
Probability Consequence Total Risk
Probability
Factor Extent Vulnerability Impact ConsequenceScore
Total Risk
Score*
Climate Change 2 9 12 15 36 38
Consequence: Sum of all weighted factors.

Extent: Sum of the weighted Extent factors.

Vulnerability: Sum of the weighted Vulnerability factors.

Impact: Sum of the weighted Impact factors.

Total Risk Score = Probability x Consequence
* Normalized to 100
Total Risk Score Legend
Classification Probability
Factor Extent Vulnerability Impact ConsequenceScore
Total Risk
Score
Low (L) 1 0 – 6 0 – 6 0 – 12 0 – 24 0 – 24
Medium (M) 2 7 – 12 7 – 12 13 – 26 25 – 50 25 – 54
High (H) 3 13 – 18 13 – 18 27 – 39 51 – 75 55 and above The legend—specifically the assignment of low, medium, and high—provides an additional means to qualitatively assess the probability factor, sum of weighted factors, and the total risk scores for each hazard. The Consequence Score represents the sum of the Extent, Vulnerability, and Impact Factors.

The Total Risk Score is a measure of Probability and Consequence.

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Chapter 4: Hazard Identification and Risk Assessment 76

4.6.2. Dam and Levee Failure

4.6.2.1. Description
Dams are a critical and vital part of the nation’s infrastructure as they provide a range of benefits, such as irrigation, electrical generation, flood control, renewable/clean energy, water storage, sediment/hazardous materials control, navigation, fisheries, and recreation. 75 Dams are artificial/manmade structures built across a watercourse for the purpose of retaining water. 76 A levee is a human-made structure, usually an earthen embankment or concrete floodwall, designed and constructed to contain, control, or divert the flow of water to provide reasonable assurance of excluding temporary flooding from the levee area. 77
Dam Failure
The sudden rapid and uncontrolled release of impounded water or liquid-borne solids characterizes failure. The term “dam failure” encompasses a wide variety of circumstances. Situations that would constitute a dam failure vary widely, from developing problems to a partial or catastrophic collapse of the entire dam. Potential causes of a dam failure are numerous and can be attributed to deficiencies in the original design of the dam, the quality of construction, the maintenance of the dam, operation of the appurtenances and acts of nature including precipitation in excess of the design, flood, and damage from earthquakes. Dam failures are most likely to happen for one (1) of five (5) reasons listed in Table 4-31.

Table 4-31. Dam Failure Types 78
Failure Type Description
Overtopping
Caused by water spilling over the top of a dam. Overtopping of a dam is often a precursor of dam failure. National statistics show that overtopping due to inadequate spillway design, debris blockage of spillways, or settlement of the dam crest account for approximately 34% of all dam failures in the United States.

Foundation Defects Include settlement and slope instability, cause about 30% of all dam failures.

Cracking Caused by movements like the natural settling of a dam.

Inadequate Maintenance
and Upkeep Inadequate Maintenance and Upkeep
Piping
When seepage through a dam is not properly filtered and soil particles continue to progress, and form sink holes in the dam. Another 20% of United States dam failures have been caused by piping (internal erosion caused by seepage).

Seepage often occurs around hydraulic structures, such as pipes and spillways, through animal burrows, around roots of woody vegetation, and through cracks in dams, dam appurtenances, and dam foundations.

Dam failure is potentially extremely dangerous if it occurs catastrophically with little or no warning. Dam inundation areas may contain large populations and significant critical infrastructure. During a catastrophic failure, the water flow may be dozens of feet high and move at high velocity. For large dams, evacuation procedures may not be adequate to prevent large loss of life and property damage. 75 FEMA. (2020). The National Dam Safety Program: 25 Years of Excellence. Retrieved from https://www.fema.gov/sites/default/files/2020-08/national-dam-safety-25-years.pdf. 76 Merriam-Webster. (n.d.). Dam. Retrieved from https://www.merriam-webster.com/dictionary/dam https://www.oregon.gov/owrd/programs/streamslakessanddams/dams/Pages/default.aspx. 77 United States Army Corps of Engineers. (n.d.). Levees and Flood Risk Management. Retrieved from https://www.nwp.usace.army.mil/Missions/Flood-Risk-Management/Levees/. 78 Association of State Dam Safety Officials. (n.d.). Understanding Dam Failures. Retrieved from https://damsafety.org/dam-failures.

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Chapter 4: Hazard Identification and Risk Assessment 77 A jurisdictional dam (one that falls under the jurisdiction of the State dam regulations) is defined by the California Water Code as a dam with a height greater than six (6) feet that impounds 50 acre-feet or more, or a height greater than 25 feet with storage capacity of 15 acre-feet or more. Over 1,250 jurisdictional dams are under the jurisdiction of California’s Department of Water Resources (DWR), Division of Safety of Dams (DSOD). Dams and reservoirs operated by the Federal government are not subject to State jurisdiction except as otherwise provided by Federal Law. In California, there are currently 220 dams operated by federal government agencies such as the United States Forest Service, United States Bureau of Reclamation, United States Army Corps of Engineers (USACE). 79 Levee Failure
A levee failure can occur when flood waters exceed the height of a levee and flows over its crown (i.e., overtopping); or when breaching occurs. A levee breach can occur gradually or suddenly when part of the levee gives way, resulting in an opening through which floodwater may pass. The most dangerous breaches happen quickly during periods of high water. The resulting stream of water can quickly flood a large area behind the failed levee with little to no warning. 80 Earthen levees can be damaged in several ways and if severe enough these scenarios can lead to a zone of weakness that could cause a levee breach.

Strong river currents and waves can erode the surface.

Trees growing on a levee can blow over, leaving a hole where the root ball and soil used to be.

Burrowing animals (e.g., California ground squirrel, the salt marsh harvest mouse, or the western burrowing owl) can create holes that enable water to pass through a levee.

In seismically active areas like Contra Costa County, earthquakes and ground shaking can cause a loss of soil strength, weakening the levee potentially resulting in a levee failure. Seismic activity can also cause levees to slide or slump, both of which can lead to failure. 81 USACE operates, maintains, and evaluates flood protection levees to determine if they meet accreditation requirements. Most levees are owned by local communities and flood control districts that must ensure proper operation and maintenance of the levee system as well. Two (2) types of levees are present in the San Joaquin-Sacramento River Delta area of Contra Costa County.

Levees that are part of an authorized federal flood control project on the Sacramento-San Joaquin River Delta systems that deliver irrigation and drinking water are designated as “project” levees.

The 385 miles of project levees are built to the highest level of flood protection standards, are maintained mainly by the County, and are inspected by USACE.

All other levees in the Delta are “non-project” or “local” levees. These levees, totaling 730 miles in length, are maintained by local reclamation districts. The non-project levees incorporate modern techniques and materials as the reclamation districts work to bring the old agricultural levees up to current standards. As land has subsided and sea levels have risen, a lot of the land 79 California Governor’s Office of Emergency Services. (2023). California State Hazard Mitigation Plan. Retrieved from https://www.caloes.ca.gov/wp-content/uploads/Hazard-Mitigation/Documents/2023-CaliforniaSHMP_Volume-1_11.10.2023.pdf. 80 American Society of Civil Engineers. (2010). So, You Live Behind a Levee! Retrieved from https://www.spl.usace.army.mil/Portals/17/SoYouLiveBehindLevee.pdf. 81 Ibid.

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Chapter 4: Hazard Identification and Risk Assessment 78 behind these levees is now 10 to 15 feet below sea level, making the efforts of continual improvements essential to avoid overtopping and consequent flooding.

Levees in Contra Costa County are maintained by the Contra Costa Flood Control and Water Conservation District (CCFCWCD), USACE, 13 reclamation districts, and private landowners. These levees and drainage systems protect agricultural and rural areas, critical infrastructure like highways, and important environmental resources. 82

4.6.2.2. Hazard Location
The National Inventory of Dams (NID) consists of dams meeting at least one (1) of the following criteria:

High hazard potential classification – loss of human life is likely if the dam fails.

Significant hazard potential classification – no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns.

Equal or exceed 25 feet in height and exceed 15 acre-feet in storage.

Equal or exceed 50 acre-feet storage and exceed six (6) feet in height.

Although the goal of the NID is to include all dams in the United States that meet these criteria, in reality, this inventory is limited to information that can be gathered and properly interpreted. In most cases, dams within the NID criteria are regulated (e.g., construction permit, inspection, and/or enforcement) by federal or state agencies, who have basic information on the dams within their jurisdiction. All high hazard dams have Emergency Action Plans (EAP) in place, however due to data privacy and protected information, this information is not included in this Plan. Existing EAPs include inundation data for all listed High Hazard dams. According to the NID, most High Hazard dams do not include a USACE risk assessment as outlined via the NID tool’s risk tab. Those that have risk assessments available are noted in the Summary Vulnerability Assessment section in the following pages.

According to the NID, there are 27 dams within Contra Costa County of which 23 are classified as high hazard dams. Table 4-32 lists the high hazard dams within Contra Costa County and Table 4-33 lists additional dams within the County classified as low hazard potential. 83 Figure 4-6 displays the high and significant dams located within five (5) miles of Contra Costa County.

Table 4-32. High Hazard Dams in Contra Costa County
Name National
ID Location Owner Type ConditionAssessment
Condition
Assessment
Date
Height
(feet)
Normal
Storage
(acre-feet)
Max
Discharge
(cubic feet /
second)
EAP
Antioch
Reservoir CA00057
Contra
Costa
County
City of
Antioch Earth Satisfactory 9/1/2017 30 722 Not Available Yes Argyle
No. 2 CA00186
Contra
Costa
County
East Bay
Municipal
Utility District
Other Satisfactory 9/1/2017 27 22 Not
Available
Briones CA00172
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 273 67,520 Not
Available Yes
82 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan. Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2024/02/Contra-Costa-County-General-Plan_PublicReview-Draft_Combined.pdf. 83 United States Army Corps of Engineers. (n.d.). National Inventory Dams. Retrieved from https://nid.sec.usace.army.mil/#/.

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Chapter 4: Hazard Identification and Risk Assessment 79 Name National
ID Location Owner Type ConditionAssessment
Condition
Assessment
Date
Height
(feet)
Normal
Storage
(acre-feet)
Max
Discharge
(cubic feet /
second)
EAP
C.L.

Tilden
Park
CA00161
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 88 268 Not
Available Yes
Contra
Loma CA10143
Contra
Costa
County
United States
Bureau of
Reclamation
Earth Not Available Not Available 107 2,630 838 Yes
Danville CA00184
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 75 45 Not
Available Yes
Dry Creek CA00811
Contra
Costa
County
Contra Costa
County Flood
Control and
Water
Conservation
District
Earth Satisfactory 9/1/2017 30 330 Not
Available Yes
Lafayette CA00163
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Fair 9/1/2017 132 4,250 Not
Available Yes
Lake
Orinda CA00659
Contra
Costa
County
Orinda
Country Club Earth Satisfactory 8/20/2019 45 111 474 Yes Leland CA00177
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 41 60 Not
Available Yes
Los
Vaqueros CA01396
Contra
Costa
County
Contra Costa
Water District Earth Satisfactory 9/1/2017 231 160,000 Not Available Yes Mallard CA00838
Contra
Costa
County
Contra Costa
Water District Earth Satisfactory 9/1/2017 30 3,113 Not Available Yes Maloney CA00180
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 107 68 Not
Available Yes
Marsh
Creek CA00809
Contra
Costa
County
Contra Costa
County Flood
Control and
Water
Conservation
District
Earth Satisfactory 9/1/2017 59 4,425 Not
Applicable Yes
Martinez CA10168
Contra
Costa
County
United States
Bureau of
Reclamation
Earth Not Available Not Available 62 296 272 Yes
Moraga CA00178
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 37 36 Not
Available Yes
North CA00183
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 82 244 Not
Available Yes
Pine
Creek CA00808
Contra
Costa
County
Contra Costa
County Flood
Control and
Water
Conservation
District
Earth Satisfactory 9/1/2017 87 225 Not
Available Yes
Pine
Creek
Detention
CA01252
Contra
Costa
County
Contra Costa
County Flood
Control and
Water
Conservation
District
Gravity Satisfactory 9/1/2017 30 320 Not
Available Yes
San Pablo CA00166
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 170 43,193 Not
Available Yes
Sobrante
Clearwell CA00179
Contra
Costa
County
East Bay
Municipal
Utility District
Earth Satisfactory 9/1/2017 28 25 Not
Available Yes
Upper
Sand
Creek
Detention
Basin
CA01555
Contra
Costa
County
Contra Costa
County Flood
Control and
Water
Conservation
District
Earth Satisfactory 9/1/2017 40 895 Not
Available Yes

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Chapter 4: Hazard Identification and Risk Assessment 80 Name National
ID Location Owner Type ConditionAssessment
Condition
Assessment
Date
Height
(feet)
Normal
Storage
(acre-feet)
Max
Discharge
(cubic feet /
second)
EAP
Vista Del
Mar
Detention
Basin
CA01489
Contra
Costa
County
William Lyon
Homes, Inc. Earth Satisfactory 9/1/2017 42 33 Not Available Yes Table 4-33. Additional Dams in Contra Costa County
Name National
ID Location Owner Type ConditionAssessment
Condition
Assessment
Date
Height
(feet)
Normal
Storage
(acre-feet)
Max
Discharge
(cubic feet /
second)
Clearwell
Phase 2 CA01109
Contra
Costa
County
Central Contra Costa
Sanitary District Earth Satisfactory 9/1/2017 30 100 Not Available Clifton
Court
Forebay
CA00050
Contra
Costa
County
California Department
of Water Resources Earth Fair 1/8/2021 34 29,000 Not Available Deer
Creek CA00810
Contra
Costa
County
Contra Costa County
Flood Control and
Water Conservation
District
Earth Satisfactory 9/1/2017 29 233 Not
Available
San Pablo
Clearwell CA00185
Contra
Costa
County
East Bay Municipal
Utility District Earth Satisfactory 9/1/2017 42 17 Not Available Figure 4-6. High and Significant Hazard Dams in the Contra Costa County Area Additionally, there are six (6) high hazard dams, listed in Table 4-34, that although located outside of the County, they have inundation areas within the County. Figure 4-7 illustrates areas in the County that would be inundated in the event that a dam fails.

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Chapter 4: Hazard Identification and Risk Assessment 81 Table 4-34. Dams Outside of Contra Costa County
Name National
ID Location Owner Type ConditionAssessment
Condition
Assessment
Date
Height
(feet)
Normal
Storage
(acre-feet)
Max
Discharge
(cubic feet /
second)
EAP
Exchequer
Main CA00240 Mariposa, California
Merced
Irrigation
District
Rockfill,
Earth Not Available Not Available 490 1,100,000 531,600 Yes New
Hogan CA10109 Calaveras, California
USACE
(Sacramento
District)
Rockfill,
Earth Not Available Not Available 210 348,598 106,400 Yes New
Melones CA10246 Calaveras, California
United States
Bureau of
Reclamation
Rockfill,
Earth Not Available Not Available 625 2,870,000 Not Available Yes Pine Flat CA10112 Fresno,
California
USACE
(Sacramento
District)
Gravity Not Available Not Available 440 1,091,700 391,000 Yes San Luis
Reservoir
(B.F. Sisk)
CA10183 Merced,
California
United States
Bureau of
Reclamation
Earth Not Available Not Available 382 2,118,380 Not
Available Yes
Summit CA00146 Solano,
California City of Vallejo Earth Satisfactory 9/1/2017 124 220 Not Available Yes Figure 4-7. Dams Inundation Areas in the Contra Costa County Area DSOD classifies dams slightly differently than NID. The DSOD scale defines the intensity or potential severity of dam failure solely based on potential downstream impacts to life and property and the hazard is not related to the condition of the dam or its pertinent structures. Refer to the Hazard Extent/Intensity section for further details on the DSOD’s classification. Table 4-35 lists the 25 dams within jurisdiction in Contra Costa County with DSOD’s classification.

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Chapter 4: Hazard Identification and Risk Assessment 82 Table 4-35. Dams Within Jurisdiction in Contra Costa County with DSOD Downstream Hazard Potential Classifications
Name National ID Downstream Hazard Potential
Antioch Reservoir CA00057 Extremely High
Argyle No. 2 CA00186 High
Briones CA00172 Extremely High
C.L. Tilden Park CA00161 Extremely High
Clearwell Phase 2 CA01109 Low
Clifton Court Forebay CA00050 Low
Danville CA00184 Extremely High
Dry Creek CA00811 High
Lafayette CA00163 Extremely High
Lake Orinda CA00659 High
Leland CA00177 High
Los Vaqueros CA01396 Extremely High
Mallard CA00838 High
Maloney CA00180 Extremely High
Marsh Creek CA00809 Extremely High
Moraga CA00178 High
North CA00183 Extremely High
Pine Creek CA00808 High
Pine Creek Detention CA01252 High
San Pablo CA00166 Extremely High
San Pablo Clearwell CA00185 Low
Sobrante Clearwell CA00179 High
Upper Sand Creek Detention Basin CA01555 Extremely High Vista Del Mar Detention Basin CA01489 High
According to the National Levee Database, there are 17 project levees in the County that are included in the USACE Levee Program, listed in Table 4-36.
84 An additional 18 non-project levees owned by
reclamation districts in the County are listed in Table 4-37. 85 There are over 1,100 miles of earthen levees
84 United States Army Corps of Engineers. (n.d.). National Levee Database. Retrieved from https://levees.sec.usace.army.mil/#/.
85 Contra Costa County Department of Conservation & Development Draft Levee Shapefile.

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Chapter 4: Hazard Identification and Risk Assessment 83 and revetments managed by CCFCWCD and reclamation districts in the County. 86 Figure 4-8 displays the levee systems within five (5) miles of Contra Costa County, per USACE.

Table 4-36. Project Levees in Contra Costa County
Levee Name Levee Owner Segment Length
(miles)
Wildcat Creek (Right Bank) Contra Costa County Public Works 0.86 Wildcat Creek (Left Bank) Contra Costa County Public Works 0.29 Walnut Creek and Pacheco Creek
(Right Bank)
Contra Costa County Flood Control and
Water Conservation District 1.74
Walnut Creek and Pacheco Creek
(Left Bank)
Contra Costa County Flood Control and
Water Conservation District 1.86
Walnut Creek and Grayson Creek
(Right Bank)
Contra Costa County Flood Control and
Water Conservation District 2.88
Walnut Creek and Grayson Creek
(Left Bank)
Contra Costa County Flood Control and
Water Conservation District 1.49
Walnut Creek and Clayton Valley Drain
(Right Bank)
Contra Costa County Flood Control and
Water Conservation District 0.56
Walnut Creek and Clayton Valley Drain
(Left Bank)
Contra Costa County Flood Control and
Water Conservation District 1.68
San Pablo Creek (Right Bank) Contra Costa County Public Works 1.00 San Pablo Creek (Left Bank) Contra Costa County Public Works 0.92 Rodeo Creek (Right Bank) Contra Costa County Public Works 0.19 Rodeo Creek (Left Bank) Contra Costa County Public Works 0.25 Rheem Creek (Right Bank) Contra Costa County Public Works 0.46 Rheem Creek (Left Bank) Contra Costa County Public Works 0.47 Reclamation District No. 800
(Byron Tract)
Reclamation District No. 800
(Byron Tract) 8.90
Pinole Creek (Right Bank) Contra Costa County Public Works 0.35 Pinole Creek (Left Bank) Contra Costa County Public Works 0.41 Table 4-37. Non-Project Reclamation District Levees in Contra Costa County Levee Name Segment Length
(miles)
Bixler Tract 2.04
Bethel Island 11.62
Bradford Island 7.41
Byron Tract / Discovery Bay 9.40
Coney Island 5.49
86 Contra Costa County. (2023). Public Review Draft Contra Costa County 2045 General Plan. Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2024/02/Contra-Costa-County-General-Plan_PublicReview-Draft_Combined.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 84 Levee Name Segment Length
(miles)
Contra Costa Canal 8.15
Cypress Corridor 3.82
Cypress Flood Control 1.32
Cypress Flood Control 1.88
Holland Tract 10.97
Hotchkiss Tract 6.91
Jersey Island 15.52
Palm Tract / Orwood Tract 14.42
Quimby Island 7.02
Summer Lake 3.10
Veale Tract 6.01
Webb Tract 12.96
Figure 4-8. Levee Systems in Contra Costa County Area

4.6.2.3. Hazard Extent/Intensity
Federal guidelines provide for a three (3) level classification system that defines low, significant, and high-hazard potential classifications depending on the potential for loss of life, economic loss, and

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Chapter 4: Hazard Identification and Risk Assessment 85 environmental damage resulting from a hypothetical dam failure. The USACE dam hazard categories are listed in Table 4-38.

Table 4-38. USACE Dam Hazard Categories
Hazard
Category Direct Loss of Life Lifeline Losses Property Losses EnvironmentalLosses Low
None (rural location, no
permanent structures for
human habitation).

No disruption of
services (cosmetic or
rapidly repairable
damage).

Private agricultural
lands, equipment, and
isolated buildings.

Minimal incremental
damage.

Significant
Rural location, only
transient or day-use
facilities.

Disruption of essential
facilities and access.

Major public and
private facilities.

Major mitigation
required.

High
Certain (one or more)
extensive residential,
commercial, or
industrial
development.

Disruption of essential
facilities and access.

Extensive public and
private facilities.

Extensive mitigation
cost or impossible to
mitigate.

The hazard categories are assigned to overall projects, not individual structures at a project. The four (4) general categories are described below.

Direct Loss of Life: The loss of life potential based on inundation mapping of area downstream of the project. Analyses of loss of life potential should take into account the population at risk, time of flood wave travel, and warning time.

Lifeline Losses: Indirect threats to life caused by the interruption of lifeline services due to project failure or operational disruption; for example, loss of critical medical facilities or access to them.

Property Losses: Damage to project facilities and downstream property and indirect impact due to loss of project services, such as impact due to loss of a dam and navigation pool, or impact due to loss of water or power supply.

Environmental Losses: Environmental impact downstream caused by the incremental flood wave produced by the project failure, beyond what would normally for the magnitude flood event under which the failure occurs.

DSOD uses its own scale for defining the intensity or potential severity of dam failure solely based on potential downstream impacts to life and property. Additionally, the hazard is not related to the condition of the dam or its pertinent structures. This scale has four (4) categories which include the Federal categories and adds a fourth category of “extremely high”. Table 4-39 outlines the downstream hazard potential classifications used by DSOD. 87
87 California Department of Water Resources, Division of Safety of Dams. (2021). Downstream Hazard. Retrieved from https://water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/All-Programs/Division-of-Safety-ofDams/Files/Publications/Division-of-Safety-of-Dams-Definitions-for-Downstream-Hazard-and-ConditionAssessment.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 86 Table 4-39. DSOD’s Downstream Hazard Potential Classifications Downstream Hazard
Potential Classifications Potential Downstream Impacts to Life and Safety Low No probable loss of human life and low economic and environmental losses.

Losses are expected to be principally limited to the owner’s property.

Significant No probable loss of human life but can cause economic loss, environmental damage, impacts to critical facilities, or other significant impacts.

High Expected to cause loss of at least one human life.

Extremely High Expected to cause considerable loss of human life or would result in an inundation area with a population of 1,000 or more.

The United States Army Corps of Engineers (USACE) Levee Safety Program key activities include levee inspections, risk assessments, and sharing levee information. 88 To better inform stakeholders and residents of the residual risk within their communities, USACE utilizes the Levee Safety Action Classification (LSAC) tool. 89 Table 4-40 outlines the LSAC risk levels, actions, and risk characteristics for each level. The LSAC is not a levee rating or grade, but a classification system designed to consider the following:

Probability of the levee being loaded (hazard).

Existing condition of the levee.

The current and future maintenance of the levee (performance).

The consequences if the levee were to fail or be overwhelmed.

For example, a levee that reduces risk for a dense population will have a different classification from an equally constructed levee with a smaller population because the consequences associated with failure are greater. 90
Table 4-40. USACE Levee Safety Action Classification (LSAC) 91 Risk
Actions for Levee Systems and Leveed
Areas in this Class
(Adapt actions to specific levee system conditions)
Risk Characteristics
of this Class
Very
High
(1)
Based on risk drivers, take immediate action to implement interim risk reduction measures. Increase frequency of levee monitoring, communicate risk characteristics to the community within an expedited timeframe; verify emergency plans and flood inundation maps are current; ensure community is aware of flood warning systems and evacuation procedures; and recommend purchase of flood insurance. Support risk
reduction actions as very high priority.

Likelihood of inundation due to
breach and/or system
component malfunction in
combination with loss of life,
economic, or environmental
consequences result in very high
risk.
88 United States Army Corps of Engineers. (n.d.). Levee Safety Program. Retrieved from https://www.usace.army.mil/Missions/Civil-Works/Levee-Safety-Program/. 89 United States Army Corps of Engineers. (n.d.). Levee Safety Action Classification (LSAC). Retrieved from https://www.mvn.usace.army.mil/LSAC/.
90 Ibid.
91 United States Army Corps of Engineers. (n.d.). Levee Safety Action Classification (LSAC). Retrieved from https://www.mvn.usace.army.mil/Portals/56/docs/PAO/LSACs/LSAC%20Table.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 87 Risk
Actions for Levee Systems and Leveed
Areas in this Class
(Adapt actions to specific levee system conditions)
Risk Characteristics
of this Class
High
(2)
Based on risk drivers, implement interim risk reduction measures. Increase frequency of levee monitoring;
communicate risk characteristics to the community within an expedited timeframe; verify emergency plans and flood
inundation maps are current; ensure community is aware of flood warning and evacuation procedures; and recommend
purchase of flood insurance. Support risk reduction actions as high priority.

Likelihood of inundation due to
breach and/or system
component malfunction in
combination with loss of life,
economic, or environmental
consequences results in high
risk.

Moderate
(3)
Based on risk drivers, implement interim risk reduction measures as appropriate. Verify risk information is current and implement routine monitoring program; assure O&M is up to date; communicate risk characteristics to the community in a timely manner; verify emergency plans and flood inundation maps are current; ensure community is aware of flood warning and evacuation procedures; and recommend purchase of
flood insurance. Support risk reduction actions as a priority.

Likelihood of inundation due to
breach and/or system
component malfunction in
combination with loss of life,
economic, or environmental
consequences results in
moderate risk.

Low
(4)
Verify risk information is current and implement routine monitoring program and interim risk reduction measures if appropriate; assure O&M is up to date; communicate risk characteristics to the community as appropriate; verify emergency plans and flood inundation maps are current;
ensure community is aware of flood warning and evacuation procedures; and recommend purchase of flood insurance.

Support risk reduction actions to further reduce risk to as low as practicable.

Likelihood of inundation due to
breach and/or system
component malfunction in
combination with loss of life,
economic, or environmental
consequences results in low risk.

Very
Low
(5)
Continue to implement routine levee monitoring program, including operation and maintenance, inspections, and
monitoring of risk. Communicate risk characteristics to the community as appropriate; verify emergency plans and flood inundation maps are current; ensure community is aware of flood warning and evacuation procedures; and recommend
purchase of flood insurance.

Likelihood of inundation due to
breach and/or system
component malfunction in
combination with loss of life,
economic, or environmental
consequences results in very low
risk.

No
Verdict Not enough information is available to assign an LSAC. *Levee risk is the risk that exists due to the presence of the levee system, and this is the risk used to inform the decision on the LSAC assignment.

The information presented in this table does not reflect the overtopping without breach risk associated with the presence or operation of the levee system.

4.6.2.4. Warning Time
Dam and levee failure may occur with little or no warning time.

For a dam failure, warning time varies depending on the cause of the failure. For example, in the event of extreme precipitation or massive snowmelt, evacuations can be planned with sufficient time. On the other hand, in the event of a structural failure due to earthquake, there may be no warning time. A dam’s structural type also affects warning time. Earthen dams tend to not fail completely or instantaneously, the time of breach formation ranges from a few minutes to a few hours. Once a breach is initiated, discharging water erodes the breach until either the reservoir water is depleted, or the breach resists further erosion.

Concrete gravity dams also tend to have a partial breach as one or more monolith sections are forced apart by escaping water.

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Chapter 4: Hazard Identification and Risk Assessment 88 Contra Costa County and its planning partners have established protocols for flood warning and response to imminent dam failure in the flood warning portion of its adopted Emergency Operations Plan. These protocols are tied to the emergency action plans created by the dam owners.

Warning time for levee failures also depends on the cause of the failure. A levee failure caused by structural failure can be sudden and occur with little to no warning. If heavy rains are impacting a levee system, communities located in the immediate danger zone can be evacuated before a failure occurs. If the levee failure is caused by overtopping, the community may or may not be able to recognize the impending failure and evacuate. If a levee failure occurs suddenly, evacuation may not be possible.

4.6.2.5. Probability and Frequency
Dam failure has a low probability of occurrence and it usually coincides with events that cause them (e.g., earthquakes, landslides, excessive rain, and snowmelt). Between 1950 and 2023, there have been three (3) Federal disaster declarations due to dam failure, one (1) of which has occurred in California. 92 This
represents an average of one (1) event every 23 years. However, dam safety incidents, which are less severe than dam failures, have occurred.

Like dams, levee failures have a low probability of occurrence and usually coincide with events that cause them (e.g., earthquakes and heavy rainfall). Between 1950 and 2023, there has been one (1) Federal disaster declarations due to a levee failure, which occurred in California in 2004. 93 According to the 2023 California State Hazard Mitigation Plan, in the last 120 years, there have been 124 levee failures in the State. This represents about one (1) occurrence per year.

Probability of Future Hazard Events
As previously states, dam failure and levee failure are infrequent. A levee failure is more likely to occur than a dam failure.

4.6.2.6. Past Events
There are no dam failure events reported in Contra Costa County. However, there have been two (2) recent levee failures in the San Joaquin-Sacramento River Delta, listed in Table 4-41.

Table 4-41. Dam and Levee Failure Past Events
Date Event Summary
August 27, 2009
A levee breach occurred when a bulk carrier ship was outbound from Port of Stockton and it lost steering, grounded, and hit the levee at Bradford Island. The collision damaged approximately 150 feet of levee, causing a serious breach. Of note, Bradford Island has been flooded numerous times over the past 100 years due to levee failure.

June 3, 2004
The Upper Jones Tract levee near Woodward Island failed, inundating the entire island with more than 150,000 acre feet of water. Repairs required three (3) weeks. The island, which lies 10 feet below sea level, required an additional five (5) months of dewatering. The failure resulted in approximately $90 Million in repairs.

4.6.2.7. Vulnerability and Impacts
Life Safety and Health: All residents within dam and levee inundation areas would be vulnerable and impacted by a dam or levee failure event. The potential for loss of life is affected by the capacity and number of evacuation routes available to those living in potential dam inundation areas. In a dam and 92 Federal Emergency Management Agency. (n.d.). Declared Disasters. Retrieved from https://www.fema.gov/disaster/declarations.
93 Ibid.

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Chapter 4: Hazard Identification and Risk Assessment 89 levee failure event, the vulnerable populations are all of those downstream from the dam or levee failure that are unable to evacuate the area within the allowable time frame. However, the underserved and at risk population face unique vulnerabilities and impacts in the event of flooding are a result of a dam or levee failure. These groups include, but are not limited to, households in poverty, low income population, population living in single access roads, people with limited English proficiency, individuals without access to lifelines, the elderly population (including those with access and functional needs), and undocumented individuals.
94 Households in Poverty and Low Income Population: Households in poverty include those with an income at or below $24,300 for a household of four (4). In Contra Costa County, most households considered to live in poverty are located within or near 100-year flood zones. Flooding from a dam and levee failure can damage homes, cause mildew, and mold to grow. The low income population includes households with an income of 80% or less of the median income ($104,400) in Contra Costa County. This population tends to be less likely to evacuate in response to emergency incidents, such as a dam and levee failure. Furthermore, households in poverty and low income households may have fewer financial resources to complete preparedness and recovery activities (i.e., fix flood damage) and the structures are not waterproofed or built above the current 100-year flood elevation. High concentration of this population is located within or near a flood zone or dam inundation area, mostly in the north and east portion of the County.

Individuals Living on Single Access Roads: Includes the population living in areas with a single route in and out (i.e., accessible via one (1) roadway) of the neighborhood or area. This population is uniquely vulnerable to dam and levee failure because the flooding can block, damage, and destroy roadways which can isolate this population from the community and emergency services.

In Contra Costa County, several neighborhoods and communities in the Delta and in the hillside areas in the central and western side of the County are only accessible via one (1) roadway.

Limited English Proficiency: This group includes those that speak English “less than very well”, per the United States Census Bureau definition. In Conta Costa County, 158,965 people (38.2%) have limited English proficiency (i.e., speak English “less than very well”). This population are more likely to live in low income areas which are also most likely to be located within low lying areas. Flooding due to dam and levee failures can cause significant damage to homes resulting in uninhabitable and unhealthy conditions to live in. Additionally, individuals with limited English proficiency may have limited access to information and resources designed to prevent or mitigate flooding risk due to language or cultural differences.

Individuals Without Access to Lifelines: Includes individuals who do not have access to basic technology or services (e.g., transportation, modern communication). This population is vulnerable because not having access to these can create barriers to prepare and respond to emergency events, including dam and levee failure, may be unable to evacuate in a timely manner, and may become isolated if transit services are not operating. For example, this population may be unaware of an impending or occurring failure of a dam or levee potentially resulting in being unable to evacuate in a timely manner in the event an evacuation order is issued.

Senior (65 years old and over): The elderly population (i.e., seniors), especially those with access and functional needs, may have physical limitations that make it harder to evacuate in the event of an emergency, such as a dam and levee failure. Furthermore, the elderly population may 94 Contra Costa County. (2023). Climate Action Plan (Public Review Draft). Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 90 lack access to social connections and community support that can assist in preparing for and responding to emergency events, evacuating, improving home resiliency, managing medical needs, and locating support services. A high concentration of the elderly population lives in central Contra Costa County, Bethel Island, eastern part of Richmond, and several parts of Walnut Creek.

Undocumented Individuals: Includes people who do not have formal permission to live in the United States (i.e., do not have citizenship, permanent residency, visas, or other similar status).

This population is most likely to fall in the households in poverty and low income categories, which are considered to be at risk populations during a flooding event and are more likely to live in low lying areas in structures that are not waterproofed or build above the 100-year flood elevations.

Table 4-42 summarizes the vulnerable and at-risk population for dam and levee failure in Contra Costa County.

Table 4-42. Vulnerability and At Risk Population
Category Estimate Percent
Households in Poverty95 7,600 12.0%
Low Income Households96 25,340 41.0%
Spanish Spoken at Home97 204,442 18.7%
Speak English “Less than very
well”98 158,965 38.2%
Language Other than English99 416,505 38.0%
Foreign Born100 312,050 27.0%
Households Without Vehicle101 8,872 1.6%
65 Years and Over102 201,136 17.4%
Seniors (65 years and over) Living
Alone103 45,672 22.7%
Undocumented Individuals104 There are no official counts of how many undocumented individuals live in Contra Costa County, but in 2019 there was an estimate of 63,000. 95 Ibid.
96 Ibid.
97 United States Census Bureau. (2022). S1601: Language Spoken at Home (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1601?g=050XX00US06013. 98 Ibid.
99 Ibid.
100 United States Census Bureau. (2022). DP02: Selected Social Characteristics in the United States (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP02?g=050XX00US06013. 101 United States Census Bureau. (2022). S0801: Commuting Characteristics by Sex. Retrieved from https://data.census.gov/table/ACSST1Y2022.S0801?g=050XX00US06013. 102 United States Census Bureau. (2022). DP05: Demographics and Housing Estimates (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP05?g=050XX00US06013. 103 United States Census Bureau. (2022). DP02: Selected Social Characteristics in the United States (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP02?g=050XX00US06013. 104 Migration Policy Institute. (2019). Profile of the Unauthorized Population: Contra Costa County, CA. Retrieved from https://www.migrationpolicy.org/data/unauthorized-immigrant-population/county/6013.

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Chapter 4: Hazard Identification and Risk Assessment 91 Table 4-49 outlines the vulnerability of the total population exposed to dam and levee failure, and Table 4-50 outlines the dam and levee failure impacts to population and life safety, underserved/equity population, and essential operations, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Property Damage and Critical Infrastructure: Vulnerable properties are those closest to the dam and levee, and within the inundation area. These properties would experience the largest, most destructive surge of water. Low lying areas are also vulnerable since they are where the dam and levee waters would collect. In Contra Costa County, there is a range from the large, state-owned bridges that carry interstate freeways, to locally owned bridges that carry rural roads and pedestrians over small creeks. Countywide, there are over 400 bridges where approximately 80 are owned by the County and 160 owned by Caltrans.

There are 26 bridges that are within the 100-year flood zone and dam inundation areas. Some of these bridges are located in low lying areas that could become flooded during a dam or levee failure event if located within the inundation areas. Additionally, Interstate 680 and 80, and State Route 4, along with many regional roadways, are within dam and levee inundation areas. Flooding to these roadways and local roadways can cause major disruptions to local and regional transportation, transit, and commuters.

There are 10 wastewater treatment plants in the County which treat wastewater for residents within cities and unincorporated County. One (1) of the wastewater treatment plants is located within a dam inundation area. In Contra Costa County, there are 99 industrial buildings that are within dam inundation areas. Other industrial buildings located outside the 100-year floodplain, and dam and levee inundation areas are unlikely to be waterproofed or flood resistant. If any of these structures are damaged due to flooding, it can increase the potential of a hazardous materials release.

There are a total of 554 critical assets (i.e., schools, nursing homes, fire stations, police stations, and hospitals) throughout the County and 41 (7.4%) are located within a dam inundation area. Table 4-43 provides a breakdown of critical assets that are located within dam inundation areas in Contra Costa County.

Table 4-43. Critical Assets in Vulnerable to Dam Failure Asset Estimate Percent
(of total asset)
Schools (public schools, private schools) 27 7.5%
Nursing Homes 2 2.6%
Fire Stations 8 9.9%
Police Stations 4 16.7%
Hospitals 0 0.0%
According to the National Levee Database, there are 58 levees in the County, which are included in the USACE Levee Program. Table 4-44 lists the levees within the County along with the number of buildings, population, property value, and number of critical infrastructure that is deemed vulnerable in the event of a levee failure.
105
Table 4-44. Levee and Vulnerability in the Leveed Area
105 United States Army Corps of Engineers. (n.d.). National Levee Database. Retrieved from https://levees.sec.usace.army.mil/.

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Chapter 4: Hazard Identification and Risk Assessment 92 Levee Name System ID
Operations /
Maintenance
Organization
(or Floodplain
Management)
Location Flooding
Source Behind Levee
Contra Costa
County Levee 6 1905004482
Contra Costa Flood
Control and Water
Conservation
District
City of Oakley Marsh Creek
7 Buildings
9 People
$10 M Property Value
0 Critical Structures
Contra Costa
County Levee 7 1905004044 FEMA Region 9 Knightsen Not Available 81 Buildings
187 People
$60 M Property Value
0 Critical Structures
Contra Costa
County Levee 9 1905004332 FEMA Region 9 Town of Discovery Bay Not Available 7 Buildings
65 People
$50 M Property Value
0 Critical Structures
Contra Costa
County Levee
14 1905004480
Contra Costa Flood
Control and Water
Conservation
District
City of Oakley Marsh Creek
13 Buildings
37 People
$50 M Property Value
1 Critical Structures
Contra Costa
County Levee
15 1905004159 FEMA Region 9 Bethel Island Not Available 14 Buildings
42 People
$8 M Property Value
0 Critical Structures
Contra Costa
County Levee
16 1905004423 Reclamation
District No. 799 City of Oakley Unknown
131 Buildings
708 People
$100 M Property Value
0 Critical Structures
Contra Costa
County Levee
17 1905004133 FEMA Region 9 Bethel Island Not Available 3 Buildings
18 People
$2 M Property Value
0 Critical Structures
Contra Costa
County Levee
19 1905004126 Reclamation
District No. 830 Bethel Island Not Available
16 Buildings
8 People
$30 M Property Value
0 Critical Structures
Contra Costa
County Levee
20 1905004130 FEMA Region 9 Bethel Island Not Available 1,114 Buildings
2,419 People
$700 M Property Value
2 Critical Structures
Contra Costa
County Levee
22 1905004016 FEMA Region 9 City of Oakley Not Available 609 Buildings
1,666 People
$500 M Property Value
0 Critical Structures
Contra Costa
County Levee
24 1905004051 FEMA Region 9 City of Oakley Not Available 15 Buildings
0 People
$30 M Property Value
0 Critical Structures
Contra Costa
County Levee
25 1905004400
Town of Discovery
Bay Community
Services District
Town of
Discovery Bay Not Available
134 Buildings
1,627 People
$100 M Property Value
0 Critical Structures
Contra Costa
County Levee
28 1905004333 FEMA Region 9 Town of
Discovery Bay Not Available
2 Buildings
74 People
$2 M Property Value
0 Critical Structures

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Chapter 4: Hazard Identification and Risk Assessment 93 Levee Name System ID
Operations /
Maintenance
Organization
(or Floodplain
Management)
Location Flooding
Source Behind Levee
Contra Costa
County Levee
29 1905004019 City of Oakley City of Oakley Not Available 336 Buildings
24 People
$200 M Property Value
0 Critical Structures
Contra Costa
County Levee
32 1905004008 City of Oakley City of Oakley Contra Costa Canal
825 Buildings
1,196 People
$500 M Property Value
0 Critical Structures
Contra Costa
County Levee
35 1905004443 FEMA Region 9 Knightsen Not Available
2 Buildings
15 People
$1 M Property Value
0 Critical Structures
Contra Costa
County Levee
39 1905004334 FEMA Region 9 Town of
Discovery Bay Not Available
16 Buildings
80 People
$20 M Property Value
1 Critical Structures
Contra Costa
County Levee
40 1905004020 FEMA Region 9 City of Oakley Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
41 1905004158 FEMA Region 9 Bethel Island Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
42 1905004095 FEMA Region 9 Byron Unknown
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
47 1905004157 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
52 1905004129 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
55 1905004081 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
64 1905004119 FEMA Region 9 City of Martinez Not Available 3 Buildings
1 People
$3 M Property Value
0 Critical Structures
Contra Costa
County Levee
73 1905004261 FEMA Region 9 City of
Richmond Not Available
0 Buildings
0 People
$0 M Property Value
0 Critical Structures
Contra Costa
County Levee
81 1905004310 FEMA Region 9 City of Antioch Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures

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Chapter 4: Hazard Identification and Risk Assessment 94 Levee Name System ID
Operations /
Maintenance
Organization
(or Floodplain
Management)
Location Flooding
Source Behind Levee
Contra Costa
County Levee
88 1905004270 FEMA Region 9 City of
Richmond Not Available
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
108
1905004272 FEMA Region 9 City of
Richmond Not Available
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
151
1905004322 FEMA Region 9 City of Antioch Not Available
1 Buildings
3 People
$100,000 Property
Value
0 Critical Structures
Contra Costa
County Levee
198
1905004090 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
208
1905004149 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
215
1905004420 FEMA Region 9 City of Martinez Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
217
1905004420 FEMA Region 9 City of Pittsburg Not Available 0 Buildings
0 People
$0 M Property Value
0 Critical Structures
Contra Costa
County Levee
218
1905004271 FEMA Region 9 City of
Richmond Not Available
0 Buildings
0 People
$0 M Property Value
0 Critical Structures
Contra Costa
County Levee
245
1905004262 FEMA Region 9 City of
Richmond Not Available
1 Buildings
0 People
$20 M Property Value
0 Critical Structures
Contra Costa
County Levee
251
1905004125 FEMA Region 9 Byron Not Available
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Contra Costa
County Levee
253
1905004365 FEMA Region 9 Mountain House Not Available
2 Buildings
13 People
$1 M Property Value
0 Critical Structures
Contra Costa
County Levee
255
1905004452 FEMA Region 9 Byron Not Available
5 Buildings
0 People
$10 M Property Value
0 Critical Structures
Lakeshore Dry
Levee 1905004128
Town of Discovery
Bay Community
Services District
Town of
Discovery Bay Unknown
207 Buildings
1,245 People
$200 M Property Value
0 Critical Structures

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Chapter 4: Hazard Identification and Risk Assessment 95 Levee Name System ID
Operations /
Maintenance
Organization
(or Floodplain
Management)
Location Flooding
Source Behind Levee
Pinole Creek
(Left Bank) 5305000027
Contra Costa
County Public
Works Department
City of Pinole Pinole Creek
20 Buildings
47 People
$6 M Property Value
0 Critical Structures
Pinole Creek
(Right Bank) 5305000028
Contra Costa
County Public
Works Department
City of Pinole Pinole Creek
16 Buildings
52 People
$6 M Property Value
0 Critical Structures
Reclamation
District No. 800
(Byron Tract)
5205000071 Reclamation
District No. 800
Town of
Discovery Bay
Discovery Bay,
Italian Slough,
Old River,
Vasco Hills
runoff, Vasco
Hills runoff drain
1,704 Buildings
3,599 People
$1 B Property Value
7 Critical Structures
Rheem Creek
(Left Bank) 5305000031
Contra Costa
County Public
Works Department
City of
Richmond Rheem Creek
0 Buildings
12 People
$0 Property Value
0 Critical Structures
Rheem Creek
(Right Bank) 5305000032
Contra Costa
County Public
Works Department
City of
Richmond Rheem Creek
0 Buildings
4 People
$0 Property Value
0 Critical Structures
Rodeo Creek
(Left Bank) 5305000033
Contra Costa
County Public
Works Department
Rodeo Rodeo Creek
198 Buildings
412 People
$70 M Property Value
0 Critical Structures
Rodeo Creek
(Right Bank) 5305000034
Contra Costa
County Public
Works Department
Rodeo Rodeo Creek
12 Buildings
40 People
$4 M Property Value
0 Critical Structures
Sacramento
County Levee 1 1905004132 FEMA Region 9 Bethel Island Not Available 0 Buildings
0 People
$0 Property Value
0 Critical Structures
San Pablo
Creek (Left
Bank)
5305000043
Contra Costa
County Public
Works Department
North Richmond San Pablo
Creek
0 Buildings
12 People
$0 Property Value
0 Critical Structures
San Pablo
Creek (Right
Bank)
5305000044
Contra Costa
County Public
Works Department
North Richmond San Pablo
Creek
18 Buildings
470 People
$30 M Property Value
0 Critical Structures
Walnut Creek –
Clayton Valley
Drain (Left
Bank)
5205001391
Contra Costa Flood
Control and Water
Conservation
District, Contra
Costa County
Public Works
Department
City of Concord Walnut Creek
168 Buildings
1,365 People
$100 M Property Value
0 Critical Structures
Walnut Creek –
Clayton Valley
Drain (Right
Bank)
5205001392
Contra Costa Flood
Control and Water
Conservation
District, Contra
Costa County
Public Works
Department
City of Concord Walnut Creek
142 Buildings
528 People
$70 M Property Value
0 Critical Structures

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Chapter 4: Hazard Identification and Risk Assessment 96 Levee Name System ID
Operations /
Maintenance
Organization
(or Floodplain
Management)
Location Flooding
Source Behind Levee
Walnut Creek –
Grayson Creek
(Left Bank)
5205001394
Contra Costa Flood
Control and Water
Conservation
District, Contra
Costa County
Public Works
Department
Vine Hill Walnut Creek
22 Buildings
638 People
$80 M Property Value
1 Critical Structures
Walnut Creek –
Grayson Creek
(Right Bank)
5205001393
Contra Costa Flood
Control and Water
Conservation
District, Contra
Costa County
Public Works
Department
Pacheco Walnut Creek
785 Buildings
2,375 People
$200 M Property Value
1 Critical Structures
Wildcat Creek 1905004525
Contra Costa Flood
Control and Water
Conservation
District
North Richmond Wildcat Creek
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Wildcat Creek 1905004520
Contra Costa Flood
Control and Water
Conservation
District
City of
Richmond Wildcat Creek
4 Buildings
0 People
$30 M Property Value
1 Critical Structures
Wildcat Creek 1905004521
Contra Costa Flood
Control and Water
Conservation
District
North Richmond Wildcat Creek
0 Buildings
0 People
$0 Property Value
0 Critical Structures
Wildcat Creek
(Left Bank) 5305000045
Contra Costa
County Public
Works Department
North Richmond Wildcat Creek
1,120 Buildings
3,894 People
$300 M Property Value
6 Critical Structures
Wildcat Creek
(Right Bank) 5305000046
Contra Costa
County Public
Works Department
City of
Richmond Wildcat Creek
16 Buildings
159 People
$20 M Property Value
1 Critical Structures
Table 4-49 outlines the total property value exposed to dam and levee failures and how the changes in development in the past five (5) years have affected the vulnerability of the community to dam and levee failures. Table 4-50 outlines the dam and levee failure impacts on total property damage, potential future development, and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Environment: All of the environmental assets that are within dam and levee inundation areas are vulnerable to flooding as a result of a dam or levee failure. Loss estimation platforms (e.g., Hazus) are not currently equipped to measure environmental impacts of flood hazards. The best gauge of vulnerability of the environment would be a review of damage from past dam and levee failures events.

Data on losses that segregate damage to the environment was not available at the time of this Plan.

Capturing this data from future events could be beneficial in measuring the vulnerability of the environment for future Plan updates.

Agriculture, a major economic driver for the County, is located within low lying areas that are located within dam inundation areas. Field crops (i.e., tomatoes, sweet corn, and other vegetables), fruit and nut orchards, vineyards, and plant nurseries are part of the agriculture in the County. Flooding can cause significant damage to crop production by damaging plants, washing away topsoil nutrients, and degrading

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Chapter 4: Hazard Identification and Risk Assessment 97 essential microbial activity. As a result, plants can be harmed, and agricultural productivity will be reduced; subsequently harming the agricultural economy. Furthermore, rangeland, lands where livestock species (i.e., cattle) are raised, located in Bethel Island and the Delta areas are within the 100-year floodplain and dam inundation areas. In Contra Costa County, rangeland is primarily located in the eastern portion of the County. Flood waters can damage important rangeland infrastructure and the natural grassland that feeds cattle and livestock which can harm the local economy in the County.

Table 4-50 outlines dam and levee failure impacts on the environment and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Changes in Development and Impact of Future Development: There have been no significant changes in development that have affected the risks associated with dam and levee failure. Future increases in population within dam and levee inundation areas may expose more of the population to these events. Growth over the past decade has considerably increased. Between 2010 and 2022, as outlined in Table 3-3, the population in Contra Costa County grew 10.6%, from 1,046,025 to 1,156,966 residents. The Bay Area Association of Governments (ABAG) growth forecasts predict a steady increase in households through 2050. From 2015 to 2050, ABAG projects that the County’s number of households will grow by 44%.106 This increase in population can add an additional strain to first responders in the event of a dam and levee failure evacuation. The impact of future development should not significantly change the vulnerability to dam or levee failure. Most of the expected development will occur in the eastern portions of the County which are less susceptible to these hazards.

Table 4-49 outlines how the changes in development in the past five (5) years have affected the vulnerability of the community to dam and levee failure. Table 4-50 outlines the dam and levee failure impacts on potential future development, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Effects of Climate Change in Severity of Impacts: Although climate change does not have a direct impact on dam and levee failures, flood frequency and magnitude are expected to increase as a result of climate change. Subsequently increasing the probability of dam and levee failures. Table 4-45 indicates the 25-year precipitation projections in Contra Costa County.107 Table 4-46 outlines the flood associated climate indicators for Contra Costa County projected through the end of the century.108 106 Bay Area Association of Government. (2020). Plan Bay Area 2050 Final Blueprint Growth Pattern. Retrieved from https://planbayarea.org/digital-library/plan-bay-area-2050-final-blueprint-growth-pattern. 107 Northeast Regional Climate Center. (n.d.). Neighborhoods at Risk: Climate Projections. Retrieved from https://nar.headwaterseconomics.org/.
108 Climate Mapping for Resilience and Adaptation. (n.d.). Climate Mapping for Resilience and Adaptation Assessment Tool. Retrieved from https://livingatlas.arcgis.com/assessment-tool/explore/details.

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Chapter 4: Hazard Identification and Risk Assessment 98 Table 4-45. 25-Year Precipitation Projections for Contra Costa County Higher Emissions (RCP8.5)
Contra Costa County is expected to experience a 7% increase in days with heavy precipitation within 25 years.

By 2048, Contra Costa County is expected to experience 0.18 more days of heavy precipitation per year (from

2.77 days to 2.95 days per year).

Lower Emissions (RCP4.5)
Contra Costa County is expected to experience an 8% increase in days with heavy precipitation within 25 years.

By 2048, Contra Costa County is expected to experience 0.2 more days of heavy precipitation per year (from

2.5 days to 2.7 days per year).

Table 4-46. Future Climate Indicators for Contra Costa County Indicators
Modeled
History
(1976 – 2005)
Early Century
(2015 – 2044)
Mid Century
(2035 – 2064)
Late Century
(2070 – 2099)
Lower
Emissions
Higher
Emissions
Lower
Emissions
Higher
Emissions
Lower
Emissions
Higher
Emissions
Min – Max Min – Max Min – Max Min – Max Min – Max Min – Max Min – Max Precipitation
Average annual total
precipitation
19 inches 19 inches 20 inches 20 inches 20 inches 20 inches 21 inches 17 – 21 16 – 25 17 – 24 17 – 26 16 – 25 16 – 25 14 – 27 Days per year with
precipitation
(Wet Days)
84 days 82 days 82 days 80 days 80 days 80 days 77 days 80 – 88 74 – 91 74 – 91 68 – 91 69 – 98 70 – 90 58 – 94 Maximum period of
consecutive wet days
11 days 11 days 12 days 11 days 11 days 11 days 11 days 10 – 12 10 – 14 10 – 14 9 – 14 9 – 15 10 – 15 8 – 17
Temperature Thresholds
Annual days with total
precipitation greater
than 1 inch
2 days 3 days 3 days 3 days 3 days 3 days 4 days
2 – 3 2 – 4 2 – 4 2 – 5 2 – 5 2 – 5 2 – 7
Annual days with total
precipitation greater
than 2 inches
0 days 0 days 0 days 0 days 0 days 0 days 0 days
0 – 0 0 – 1 0 – 1 0 – 1 0 – 1 0 – 1 0 – 1
Annual days with total
precipitation greater
than 3 inches
0 days 0 days 0 days 0 days 0 days 0 days 0 days
0 – 0 0 – 0 0 – 0 0 – 0 0 – 0 0 – 0 0 – 0
Annual days that
exceed 99th percentile
precipitation
4 days 5 days 5 days 5 days 5 days 5 days 6 days
3 – 7 3 – 8 3 – 8 3 – 8 3 – 9 3 – 9 4 – 11
Days with maximum
temperature below
32°F
0 days 0 days 0 days 0 days 0 days 0 days 0 days
0 – 0 0 – 0 0 – 0 0 – 0 0 – 0 0 – 0 0 – 0

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Chapter 4: Hazard Identification and Risk Assessment 99 Table 4-50 outlines the climate change impacts to dam and levee failures in Contra Costa County, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

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Packet Pg. 172 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) Dam and Levee Failure Low Significant hazard event is likely to occur within 100 years. 1 N/A Dam and Levee Failure
Extent/Intensity High Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity incident. 3 9Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9 Dam and Levee Failure
Population Exposure Low 14% or less of the population is exposed to the hazard. 1 3Property Exposure Low 9% or less of the total assessed property value is exposed to a hazard. 1 2Changes inDevelopment Low Changes in development have increased thevulnerability/exposure of the community to the hazard by 4%or less. 1 1 Dam and Levee Failure
Population and LifeSafety Medium
Populations exposed to this hazard are likely to experiencesome adverse impacts, such as injuries requiring acutemedical care. 2 6 Underserved/Equity Medium
Underserved populations exposed to the hazard are likely toexperience some adverse/disproportionate impacts, such asinjuries requiring acute medical care. 2 6 Property Damage High
More than $5 Million in property damages is expected from asingle major hazard event, or damages are expected to occurto 15% or more of the property value within the jurisdiction. 3 6 Economic High Where the total economic impact is likely to be greater than $10 Million. 3 3

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Environmental impact from a single major hazard event islikely to be significant, requiring extensive outside resourcesand support; and/or repair, clean-up, restoration, and/orpreservation work. 3 3
Essential Operations High
Impact greater than 72 hours on the ability of the jurisdictionto meet the essential day-to-day operational demands andneeds of the community from a single major hazard event. 3 3
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2Climate Change Medium Climate Change trends will increase the risk of this hazard and its impacts, but not significantly. 2 2

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Chapter 4: Hazard Identification and Risk Assessment 102

4.6.2.8. FEMA NRI Expected Annual Loss Estimates
The FEMA NRI does not assess dam and levee failure events.

4.6.2.9. FEMA Dam and Levee Failure Risk Index Score
The FEMA NRI does not assess dam and levee failure. Table 4-51 represents the Dam and Levee Failure Total Risk Score for Contra Costa County, based on the Risk Assessment Methodology, as defined in this Plan. For further details on how the probability, extent, vulnerability, and impact factors were calculated, please refer to Table 4-47 through Table 4-50. Additional details on how the Total Risk Score was calculated can be found in the Risk Assessment Methodology in Section 4.3 of this Plan.

Table 4-51. Dam and Levee Failure Total Risk Score
Hazard
Event
Probability Consequence Total Risk
Probability
Factor Extent Vulnerability Impact ConsequenceScore
Total Risk
Score*
Dam and Levee Failure 1 18 6 31 55 30
Consequence: Sum of all weighted factors.

Extent: Sum of the weighted Extent factors.

Vulnerability: Sum of the weighted Vulnerability factors.

Impact: Sum of the weighted Impact factors.

The Total Risk Score is a measure of Probability and Consequence.

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Chapter 4: Hazard Identification and Risk Assessment 103

4.6.3. Drought

4.6.3.1. Description
Drought can be difficult to define. Some definitions are an idea or concept which can be important in establishing drought policy, and others can be operational. Operational drought definitions describe how drought functions or operates in a way that can be measured. The National Integrated Drought Information System (NIDIS) defines drought as the deficiency of precipitation over an extended period of time (usually a season or more), resulting in a water shortage. 109 The National Weather Service (NWS) defines drought as a deficiency of moisture that results in adverse impacts on people, animals, or vegetation over a sizeable area. 110
Drought is part of the climate cycle, and it is an underestimated slow-moving hazard that can cause as much damage as other faster-moving hazards (e.g., hurricanes, flooding). Drought can impact agriculture, public health, transportation, ecosystems, wildfire, and water quality. In order to assist with drought classification and monitoring, scientists have defined five (5) types of droughts, listed on Table 4-52.
111
Table 4-52. Types of Drought
Type Description
Meteorological Occurs when dry weather patterns dominate the area.

Hydrological Occurs when low water supply becomes evident in the water system Agricultural Occurs when crops become affected by drought.

Socioeconomic Occurs when the supply and demand of various commodities is affected by drought.

Ecological Occurs when natural ecosystems are affected by drought.

A drought’s severity depends on numerous factors, including duration, intensity, and geographic extent, as well as regional water supply demands by humans and vegetation. Drought differs from other natural hazards in three (3) ways.

The onset and end of a drought are difficult to determine due to the slow accumulation and lingering effects of an event after its apparent end.

The lack of an exact and universally accepted definition adds to the confusion about its existence and severity.

In contrast with other natural hazards, the impact of drought is less obvious and may spread over a larger geographic area. These characteristics have hindered many governments' preparation of drought contingency or mitigation plans.
109 National Integrated Drought Information System. (2023). What is a Drought? Drought Basics. Retrieved from https://www.drought.gov/what-is-drought/drought-basics. 110 National Oceanic and Atmospheric Administration, National Weather Service. (2009). National Weather Service Glossary. Retrieved from https://w1.weather.gov/glossary/. 111 National Integrated Drought Information System. (2023). What is a Drought? Drought Basics. Retrieved from https://www.drought.gov/what-is-drought/drought-basics.

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Chapter 4: Hazard Identification and Risk Assessment 104

4.6.3.2. Hazard Location
A drought can occur anywhere in the Contra Costa County region and affect the entire planning area.

Due to the dynamic nature of droughts, drought conditions are experienced differently based on where someone lives and their sources of water. For example, ranchers grazing livestock on non-irrigated rangeland and rural residents relying on private wells for groundwater can quickly be impacted by dry conditions. On the other hand, large urban water agencies with multiple water resources are able to manage for several dry years. However, if drought conditions in the area continue for an extended period of time, everyone will experience the effects. 112

4.6.3.3. Hazard Extent/Intensity
Many drought indices have been developed; however, the Palmer Drought Severity Index (PDSI) is the most prominent index of meteorological drought utilized in the United States for drought monitoring. PDSI uses readily available temperature and precipitation data to estimate relative dryness to indicate the prolonged and abnormal moisture deficiency or excess. As an important climatological tool, the PDSI assists in evaluating the scope, severity, and frequency of prolonged periods of abnormally dry or wet weather. Furthermore, it can be utilized to identify disaster areas and indicate the availability of irrigation water supplies, reservoir levels, range conditions, amount of stock water and potential intensity of wildfires. 113, 114
The PDSI is a standardized measure that compares moisture deficiency and excess on a numerical scale that usually ranges from positive five (5) to a negative five (5). Positive values mean there is an excess in moisture supplies and conversely, negative values indicate moisture demands in excess of supplies.

Table 4-53 displays the PDSI categories and Figure 4-9 illustrates the drought conditions in the contiguous United States as measured by the PDSI for the month of March 2024.

Table 4-53. Palmer Drought Severity Index
Palmer Drought
Severity Index Category
- 4.00 and below Extreme Drought
- 3.00 to - 3.99 Severe Drought
- 2.00 to - 2.99 Moderate Drought
- 1.99 to + 1.99 Mid-Range
+ 2.00 to + 2.99 Moderately Moist
+ 3.00 to + 3.99 Very Moist
+ 4.00 and above Extremely Moist
112 California Department of Water Resources. (n.d.). California Water Watch. Retrieved from https://cww.water.ca.gov/droughtindicator.
113 National Weather Service, Climate Prediction Center. (2005). Drought Indices: Explanation. Retrieved from https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/cdus/palmer_drought/wpdanote.shtml. 114 National Center for Atmospheric Research. (n.d.). Climate Data Guide: Palmer Drought Severity Index (PDSI). Retrieved from https://climatedataguide.ucar.edu/climate-data/palmer-drought-severity-index-pdsi.

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Chapter 4: Hazard Identification and Risk Assessment 105 Figure 4-9. Palmer Drought Severity Index Map (March 2024) The U.S. Drought Monitor (USDM) is a collaboration between the National Drought Mitigation Center (NDMC), United Stated Department of Agriculture, and NOAA. They also rate drought nationwide by intensity utilizing a D0 (Abnormally Dry) to D4 (Exceptional Drought) scale, shown in Table 4-54. 115 The
map updates weekly to show the location and intensity of drought across the country. 116 Figure 4-10
illustrates the USDM map for the State of California which shows where drought conditions are occurring and its severity.
117
115 National Drought Mitigation Center. (n.d.). What is USDM. Retrieved from https://droughtmonitor.unl.edu/About/WhatistheUSDM.aspx. 116 National Integrated Drought Information System. (2023). U.S. Drought Monitor (USDM). Retrieved from https://www.drought.gov/data-maps-tools/us-drought-monitor. 117 U.S. Drought Monitor. (2023). California. Retrieved from https://droughtmonitor.unl.edu/Maps/MapArchive.aspx.

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Chapter 4: Hazard Identification and Risk Assessment 106 Table 4-54. U.S. Drought Monitor Classification
Category Description Possible Impacts PDSI Range
D0 Abnormally Dry
Used for areas showing dryness, but not yet in drought, or for areas recovering from drought.

Going into drought:

Short-term dryness slowing planting, growth of crops or pastures.

Coming out of drought:

Some lingering water deficits.

Pastures or crops not fully recovered.
-1.0 to -1.9
D1 Moderate
Drought
Some damage to crops and pastures.

Streams, reservoirs, or wells are low, and some water
shortages are developing or imminent.

Voluntary water use restrictions requested.
-2.0 to -2.9
D2 Severe
Drought
Crop or pasture losses are likely.

Water shortages are common.

Water restrictions imposed.
-3.0 to -3.9
D3 Extreme
Drought
Major crop/pasture losses.

Widespread water shortages or restrictions. -4.0 to -4.9 D4 Exceptional
Drought
Exceptional and widespread crop/pasture losses.

Shortages of water in reservoirs, streams, and wells are creating water emergencies.
-5.0 or less

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Chapter 4: Hazard Identification and Risk Assessment 107 Figure 4-10. California U.S. Drought Monitor (April 9, 2024)

4.6.3.4. Warning Time
Droughts develop gradually over long periods of time which can make it complicated to recognize when a drought will occur. However, understanding how large-scale climate patterns (e.g., El Niño–Southern Oscillation (ENSO)) affect the potential of drought in an area can help forecast when drought conditions will occur. DWR maintains the California Water Watch website which offers current local, at the regional and neighborhood level, and statewide water conditions. The website includes information on precipitation, temperature, reservoirs, streamflow, groundwater, snowpack, soil moisture, and vegetation conditions, and California drought updates. In California, drought is based on impacts to water users and observing and monitoring water availability can help have a better understanding of when and where drought can occur. DWR’s California Water Watch can be accessed via the following link cww.water.ca.gov.

4.6.3.5. Probability and Frequency
Meteorological drought can begin and end rapidly while hydrological drought develops a lot slower and takes a lot longer to recover. Due to the significant differences in the types of droughts, different indices have been developed to measure and monitor droughts in the various sectors. The U.S. Drought Monitor depicts drought integrated across all time scales and differentiates between agricultural and hydrological impacts. 118 Meanwhile, NOAA utilizes the PDSI to measure drought conditions (Table 4-53). 118 National Oceanic and Atmospheric Administration. (n.d.). Did You Know? Index (Definition of Drought).

Retrieved from https://www.ncei.noaa.gov/access/monitoring/dyk/drought-definition.

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Chapter 4: Hazard Identification and Risk Assessment 108 Estimating drought probability and frequency continues to be difficult, regardless of the improvements in science and technology. According to the 2023 California State Hazard Mitigation Plan, the normal occurrence droughts and documentation of past events and losses determine that the probability for drought events throughout the State will continue. 119
Probability of Future Hazard Events
The drought annualized frequency value represents the average number of recorded drought hazard occurrences, in event days, per year over the period of record (22 years). Table 4-55 outlines the annualized frequency for drought, based on FEMA NRI data, for Contra Costa County.

Table 4-55. Drought Annualized Frequency for Contra Costa County (FEMA National Risk Index)
Location Events on Record
(2000 – 2021) Annualized Frequency
Contra Costa County 1,386 52 events per year (in days)
Annualized frequency is defined as the expected frequency or probability of a hazard occurrence per year.

4.6.3.6. Past Events
Droughts reoccur every few years. Unlike other hazards (e.g., floods and earthquakes), droughts are not easily defined as “events”. Contra Costa County has experienced multiple droughts between 2000 and 2023, as illustrated in Figure 4-11. Contra Costa County has experienced severe drought from August 2008 through October 2009 and severe to exceptional drought from November 2013 through January 2017 and again from April 2021 through January 2023. A Presidentially Disaster Declaration for drought has never been declared in the State of California.

Figure 4-11. U.S. Drought Monitor for Contra Costa County 120 119 California Governor’s Office of Emergency Services. (2023). California State Hazard Mitigation Plan. Retrieved from https://www.caloes.ca.gov/wp-content/uploads/Hazard-Mitigation/Documents/2023-CaliforniaSHMP_Volume-1_11.10.2023.pdf. 120 U.S Drought Monitor. (2023). Time Series (Contra Costa County, CA). Retrieved from https://droughtmonitor.unl.edu/DmData/TimeSeries.aspx.

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Chapter 4: Hazard Identification and Risk Assessment 109 California hydrologic data shows multi-year droughts from 1912 to 1913, 1918 to 1920, 1922 to 1924, and 1928 to 1934. Since then, prolonged periods of drought continued to occur in California, all of which impacted Contra Costa County to some degree, are listed in Table 4-56.

Table 4-56. Drought Past Events
Date Event Summary
2021 – 2022
Water Year 2022 (October 1, 2021, through September 30, 2022) was the third driest year on record. Although it did not record the highest temperatures or lowest precipitation amounts, it preceded Water Year 2021.

The years 2020 through 2022 were the driest on record for the State of California. For maximum temperature, August 2020 came in second to 1967. For September, the maximum temperature ranked sixth warmest. On August 16, Death Valley recorded a temperature of 130 ºF. Five (5) of the State’s largest six (6) fires in history were ignited in August and September. The 2021 water year was the second driest on record, with extreme heat and lack of precipitation. By the end of 2021, all 58 counties in California were placed under a drought emergency proclamation (State of California 2022d). The drought continued through April 2022; the snowpack of the Sierra Nevada was at 38% of its statewide average (Becker 2022). The State experienced $1.2 Billion in crop damage as a result of this drought period.
2012 – 2016
California’s last drought set several records for the State. The period from 2012 to 2014 ranked as the driest three (3) consecutive years for statewide precipitation.

Calendar year 2014 set new climate records for statewide average temperatures and for record-low water allocations from State Water Project and federal Central Valley Project contractors. Calendar year 2013 set minimum annual precipitation records for many communities. The State has detailed executive orders and regulations concerning water conservation and management. Total impacts of the drought have not yet been determined.
2007 – 2009
The Governor issued an executive order that proclaimed a statewide drought emergency on June 4, 2008, after spring 2008 was the driest spring on record, with low snowmelt runoff. On February 27, 2009, the governor proclaimed a state of emergency for the entire state as severe drought conditions continued. The largest court-ordered water restriction in state history (at the time) was imposed. 1987 – 1992
California received precipitation well below average levels for four (4) consecutive years. While the Central Coast was most affected, the Sierra Nevada in Northern California and the Central Valley counties were also affected. During this drought, only 56% of average runoff for the Sacramento Valley was received, totaling just 10 million acre-feet. In 1991, the State Water Project sharply decreased deliveries to water suppliers, including the San Francisco Bay area. By February 1991, all 58 counties in California were experiencing drought conditions. Urban areas as well as agricultural areas were impacted.
1976 – 1977
This was the worst drought in the State’s history at the time. 1976 was the fourth driest year on record followed by 1977, the driest period on record in California. The cumulative impact led to widespread water shortages and severe water conservation measures throughout the State. Only 37% of the average Sacramento Valley runoff was received, with just 6.6 million acre-feet recorded. Over $2.6 Billion in crop damage was recorded in 31 counties. FEMA declared an Emergency Declaration (EM-3023- CA) on January 20, 1977, for all 58 California counties.

4.6.3.7. Vulnerability and Impacts
Life Safety and Health: All residents within Contra Costa County would be vulnerable and impacted by a drought. Drought can affect people’s health and safety, including health problems related to low water flows, poor water quality, or dust. Other possible impacts include recreational risks; effects on air quality;

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Chapter 4: Hazard Identification and Risk Assessment 110 diminished living conditions related to energy, air quality, and hygiene; compromised food and nutrition; and increased incidence of illness and disease. Droughts can also lead to reduced local firefighting capabilities. However, the underserved and at risk population face unique vulnerabilities and impacts to drought. These groups include, but are not limited to, outdoors workers and undocumented individuals. 121
Outdoor Workers: Includes, but are not limited to, construction workers, agriculture workers, and recreation. Drought can reduce water availability for agricultural operations, parks, and recreation areas, which can indirectly harm outdoor workers. Agricultural operations and Delta recreational opportunities can be halted, which may cause outdoor workers to lose jobs. Additionally, drought events are accompanied by extreme heat which outdoor workers are extremely vulnerable to.

Outdoor workers are disproportionately impacted by extreme heat because they are required to be outside and risk heat related illnesses (e.g., heat cramps, heat exhaustion, heat stroke).

Furthermore, outdoor work may also be halted during high temperatures, which can cause significant economic hardships.

Undocumented Individuals: Includes people who do not have formal permission to live in the United States (i.e., do not have citizenship, permanent residency, visas, or other similar status).

Most of this population has outdoor occupations or work in highly unregulated environment which leaves them susceptible to harm from extreme heat conditions that accompany drought events.

Outdoor work may also be halted during high temperatures and droughts, which can cause significant economic hardships. Undocumented agricultural workers may face economic hardship if crops, vineyards, or rangeland are damaged by drought conditions. Furthermore, agricultural workers who are undocumented are more likely to be let go when farms experience economic hardship. There are no official counts of how many undocumented individuals live in Contra Costa County, but in 2019 there was an estimate of 63,000.122 Individuals with Chronic Illnesses: Includes those that have long term or permanent health conditions that can be exacerbated by drought conditions (e.g., cardiovascular disease, respiratory conditions, mental illness). This population is most vulnerable to the health impacts of droughts. During droughts, air quality can decrease as a result of wildfires and dust which produce air particulates that irritate the lungs and bronchial passages exacerbating chronic respiratory conditions. Additionally, drought conditions can also increase the incidence of illness and disease (e.g., mosquito-borne diseases, anxiety, depression, and other adverse mental health outcomes).123
East Contra Costa County is more susceptible to the effects of drought due to extensive agricultural areas which impact the County’s economy. Additionally, these conditions can also impact low income populations, as food and water prices increase, or agricultural workers who rely on agriculture for their livelihood.

Table 4-61 outlines the vulnerability of the total population exposed to drought. Table 4-62 outlines the drought impacts to population and life safety, underserved/equity population, and essential operations, as outlined in the risk assessment methodology in Section 4.3 of this Plan. 121 Contra Costa County. (2023). Climate Action Plan (Public Review Draft). Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.
122 Migration Policy Institute. (2019). Profile of the Unauthorized Population: Contra Costa County, CA. Retrieved from https://www.migrationpolicy.org/data/unauthorized-immigrant-population/county/6013. 123 National Integrated Drought Information System. (n.d.). Drought.gov, By Sector: Public Health. Retrieved from https://www.drought.gov/sectors/public-health.

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Chapter 4: Hazard Identification and Risk Assessment 111 Property Damage and Critical Infrastructure: No structures will be directly affected by drought conditions, though some structures may become vulnerable to wildfires, which are more likely following years of drought. Droughts can also have significant impacts on landscapes, which could cause a financial burden to property owners. However, these impacts are not considered critical in planning for impacts from the drought hazard. Additionally, buildings and infrastructure does not need to be physically damaged to trigger a loss of service. For example, extreme heat, which accompanies drought, makes the machinery of the power grid run less efficiently and simultaneously increases demand to meet greater cooling needs. This combination raises the risk of grid overloading and causing brownouts or blackouts.

Similarly, drought conditions harm water delivery services but do not cause physical damage to pipes or water treatment plants.

Table 4-61 outlines the total property value exposed to drought and how the changes in development in the past five (5) years, have affected the vulnerability of the community to drought. Table 4-62 outlines the drought impact on total property damage, potential future development, and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Environment: Environmental losses from drought are associated with damage to plants, animals, wildlife habitat, and air and water quality, forest and range fires, degradation of landscape quality, loss of biodiversity, and soil erosion. Some of the effects are short-term and conditions quickly return to normal following the end of the drought. Other environmental effects linger for a longer time or may even become permanent. In Contra Costa County, the following ecosystems and natural resources are vulnerable to droughts:124
Aquatic: Aquatic habitat (i.e., streams, reservoirs, ponds, and sloughs or channels) are impacted by droughts. This ecosystem includes the Delta and shoreline areas that are submerged by water.

In Contra Costa County, the three (3) large reservoirs include San Pablo Reservoir, Briones Reservoir, and Los Vaqueros Reservoir. Aquatic wildlife species include various duck species, California red-legged frog, western pond turtle, and juvenile and spawning adult Chinook salmon.

A drought can lower water levels and water quality and raise water temperatures in aquatic habitants. Subsequently these conditions can cause algal blooms in the Delta areas, harm salmonoid populations, and cause other systemwide failures. Aquatic species can also be harmed by lower dissolved oxygen levels and increase algae growth in the Delta.

Riparian Woodland and Shrub: Riparian woodland and shrub ecosystems consist of Valley foothill riparian, undetermined shrub, and riverine habitat. These areas are scattered throughout Contra Costa County and have numerous wildlife species (e.g., gray fox, striped skunk, broadhanded mole, mule deer, dusky-footed woodrat, yellow warbler, northern flicker, white tailed kite, and Cooper’s hawk). Drought conditions can cause smaller streams to run dry, which can subsequently harm the plants and animal habitat within the ecosystem. Additionally, trees may not have adequate water during drought periods, which can lead to pests and diseases destroying important habitat for the Gray fox, Cooper's hawk, and mule deer. Soil erosion can also occur on the banks of streams.

Wetland: Wetland ecosystems, located adjacent to the San Francisco Bay and Delta, include permanent wetland, seasonal wetland, fresh emergent wetland, alkali wetland, and marshes.

Drought conditions can directly affect the wetland ecosystems by reducing water quantity and quality, contributing to algal blooms, low streamflow, higher temperatures, and increased erosion 124 Contra Costa County. (2023). Climate Action Plan (Public Review Draft). Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2023/10/CoCoCounty-2024CAP-PublicDRAFT-10-10- 23_Final.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 112 in the Delta and inland wetland habitats. As a result, wildlife that depends on these ecosystems (e.g., California red-legged frog and western pond turtle) can be harmed. Wildlife within these ecosystems includes great blue heron, great egret, wood duck, green-winged teal, mallard, California red-legged frog, western pond turtle, garter snakes, western spadefoot toad, western toad, California tiger salamander, tri-colored blackbird, and vernal pool fairy shrimp.

Additionally, agriculture may be directly harmed from drought conditions due to an increase in soil salinity, topsoil erosion, and reduced water supply which can limit crop production and in turn result in a loss of income for agriculture owners. Agricultural operations are primarily located in eastern Contra Costa County, between the Mt. Diablo State Park and the Delta, and the economy in this area can be especially harmed by limited water for agricultural production. For example, in 2017, Contra Costa County farms and orchards produced approximately $95 Million in agriculture products. These impacts can result in reduced income for farmers and agribusiness, increased prices for food and lumber, unemployment, reduced tax revenues, increased crime, migration, and foreclosures on bank loans to farmers and businesses.

Rangeland is primarily located on grassland habitats, which can lose topsoil and productivity due to the drier conditions created by droughts. This can reduce the available foraging habitat for livestock and cause economic hardship for rangeland owners. Rangeland, primary located in the eastern Contra Costa County, are lands where many livestock species (e.g., cattle) are raised. In 2017, rangeland produced approximately $26 Million in livestock products. Furthermore, the Sacramento-San Joaquin River Delta, primarily encompasses the northern and easternmost borders of Contra Costa County and provides opportunities for boating, fishing, transportation, and a water source for the County. Drought conditions can reduce the streamflow of the Delta, reducing the water quality which can decrease commercial fishing, agricultural production, and recreation opportunities. Additionally, changes in water conditions can kill certain fish species and drought conditions can increase the salinity of the Delta which will affect the water supply for agricultural irrigation.125
Table 4-62 outlines drought impacts on the environment and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Changes in Development and Impact of Future Development: There have been no significant changes in development that have affected the risks associated with drought. Future increases in population that result in greater water consumption may exacerbate the impacts of drought. Growth over the past decade has considerably increased. Between 2010 and 2022, as outlined in Table 3-3, the population in Contra Costa County grew 10.6%, from 1,046,025 to 1,156,966 residents. The Bay Area Association of Governments (ABAG) growth forecasts predict a steady increase in households through 2050. From 2015 to 2050, ABAG projects that the County’s number of households will grow by 44%.126 This increase in population can add an additional strain to the water supply and power grid when drought conditions are present.

Table 4-61 outlines how the changes in development in the past five (5) years have affected vulnerability of the community to droughts. Table 4-62 outlines the drought impacts on potential future development, as outlined in the risk assessment methodology in Section 4.3 of this Plan. 125 Ibid.
126 Bay Area Association of Government. (2020). Plan Bay Area 2050 Final Blueprint Growth Pattern. Retrieved from https://planbayarea.org/digital-library/plan-bay-area-2050-final-blueprint-growth-pattern.

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Chapter 4: Hazard Identification and Risk Assessment 113 Effects of Climate Change in Severity of Impacts: In California and western United States, observations of climate change have shown an increase in frequency of drought and an increase in consecutive dry days. Climate change will not result in less frequency and intensity of precipitation in the County, while average annual temperatures may increase by as much as 2.0°F within 25 years. Table 4-57 indicates the 25-year climate projections in Contra Costa County.127 Table 4-57. 25-Year Climate Projections for Contra Costa County Higher Emissions (RCP8.5)
Contra Costa County is expected to experience a 43% increase in extremely hot days and a 7% increase in days with heavy precipitation within 25 years.

By 2049, Contra Costa County is expected to experience 11 more days that reach above 95°F (from 23 days to 33 days per year).

Lower Emissions (RCP4.5)
Contra Costa County is expected to experience a 29% increase in extremely hot days and an 8% increase in days with heavy precipitation within 25 years.

By 2049, Contra Costa County is expected to experience seven (7) more days that reach above 95°F (from 22 days to 29 days per year).

Climate change is already profoundly impacting California's water resources, as evidenced by changes in snowpack, sea level, and river flows. These changes are expected to continue, and more precipitation will likely fall as rain instead of snow, decreasing snowpack levels. This potential change in weather patterns will add additional challenges to water supply reliability.128 The California Department of Water Resources states climate change is responsible for the decrease in the Sierra snowpack levels which provides as much as a third of California's water supply by accumulating snow during wet winters and releasing it slowly during the spring and summer when the need is the greatest. Warmer temperatures will cause snow to melt faster and earlier, making it more difficult to store and use. By the end of this century, the Sierra snowpack is projected to experience a 48% to 65% loss from the historical April 1
st average. This loss of snowpack means less water will be available for water users in the State.129
Climate change is also expected to result in more variable weather patterns throughout the State. More variability can lead to longer and more severe droughts. In addition, rising sea levels will continue to threaten the Sacramento-San Joaquin Delta, the heart of the California water supply system and the source of water for 25 million Californians and millions of acres of prime farmland.130 Table 4-58 outlines the drought associated climate indicators for Contra Costa County projected through the end of the century.131
127 Northeast Regional Climate Center. (n.d.). Neighborhoods at Risk: Climate Projections. Retrieved from https://nar.headwaterseconomics.org/.
128 California Department of Water Resources. (n.d.). Climate Change Basics. Retrieved from https://water.ca.gov/Water-Basics/Climate-Change-Basics. 129 California Department of Water Resources. (n.d.). Climate Change and Water. Retrieved from https://water.ca.gov/Programs/All-Programs/Climate-Change-Program/Climate-Change-and-Water. 130 Ibid.
131 Climate Mapping for Resilience and Adaptation. (n.d.). Climate Mapping for Resilience and Adaptation Assessment Tool. Retrieved from https://livingatlas.arcgis.com/assessment-tool/explore/details.

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Chapter 4: Hazard Identification and Risk Assessment 114 Table 4-58. Future Climate Indicators for Contra Costa County Indicators
Modeled
History
(1976 – 2005)
Early Century
(2015 – 2044)
Mid Century
(2035 – 2064)
Late Century
(2070 – 2099)
Lower
Emissions
Higher
Emissions
Lower
Emissions
Higher
Emissions
Lower
Emissions
Higher
Emissions
Min – Max Min – Max Min – Max Min – Max Min – Max Min – Max Min – Max Precipitation
Average annual total
precipitation
19 inches 19 inches 20 inches 20 inches 20 inches 20 inches 21 inches 17 – 21 16 – 25 17 – 24 17 – 26 16 – 25 16 – 25 14 – 27 Days per year with
precipitation
(Wet Days)
84 days 82 days 82 days 80 days 80 days 80 days 77 days 80 – 88 74 – 91 74 – 91 68 – 91 69 – 98 70 – 90 58 – 94 Days per year with no
precipitation
(Dry Days)
281 days 283 days 283 days 285 days 285 days 285 days 288 days 277 – 285 275 – 291 274 – 291 275 – 298 267 – 296 275 – 296 271 – 307 Maximum number of
consecutive dry days
95 days 97 days 98 days 97 days 99 days 98 days 102 days 85 – 113 84 – 113 88 – 110 83 – 118 82 – 117 90 – 121 76 - 139 Temperature Thresholds
Annual days with
maximum temperature
greater than 90°F
36 days 55 days 57 days 62 days 68 days 70 days 90 days 36 – 43 47 – 63 51 – 65 51 – 74 55 – 84 57 – 91 72 – 124 Annual days with
maximum temperature
greater than 100°F
5 days 10 day 11 days 13 days 16 days 17 days 29 days
4 – 6 7 – 14 8 – 16 9 – 22 9 – 28 10 – 22 19 – 57
Table 4-62 outlines the climate change impacts to drought in Contra Costa County, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

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Packet Pg. 187 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) Drought Medium Significant hazard event is likely to occur within 25 years. 2 N/A Drought
Extent/Intensity High Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity incident. 3 9Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9 Drought
Population Exposure High 30% or more of the population is exposed to the hazard. 3 9Property Exposure Low 9% or less of the total assessed property value is exposed to a hazard. 1 2Changes inDevelopment Low Changes in development have increased thevulnerability/exposure of the community to the hazard by 4%or less. 1 1 Drought
Population and LifeSafety Low Populations exposed to this hazard are likely to experience minimal adverse impacts, such as ambulatory injuries. 1 3Underserved/Equity Medium Underserved populations exposed to the hazard are likely toexperience some adverse/disproportionate impacts, such asinjuries requiring acute medical care. 2 6 Property Damage Low
Less than $500,000 in property damages is expected from asingle major hazard event or less than 5% of the propertyvalue within the jurisdiction. 1 2 Economic Medium Total economic impact is likely to be greater than $500,000, but less than or equal to $10 Million. 2 2

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Environmental impact from a single major hazard event islikely to be minimal, requiring little to no outside resourcesand support, and/or minimal repair, clean-up, restoration, orpreservation work. 1 1
Essential Operations Low
Impact less than 24 hours on the ability of the jurisdiction tomeet the essential day-to-day operational demands andneeds of the community from a single major hazard event. 1 1
Future Development Medium Future development trends will increase the impact/consequence of this hazard, but not significantly. 2 2Climate Change High Climate Change trends will significantly increase the risk of this hazard and its impacts. 3 3

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Chapter 4: Hazard Identification and Risk Assessment 117

4.6.3.8. FEMA NRI Expected Annual Loss Estimates
A drought NRI EAL score, and rating represent a community's relative level of expected agriculture loss each year due to droughts when compared to the rest of the United States. The EAL score is positively associated with a community’s risk; therefore, a higher EAL score results in a higher Risk Index score.

Table 4-63 outlines the drought EAL for Contra Costa County.

Table 4-63. Drought Expected Annual Loss (FEMA National Risk Index) Jurisdiction Population
Equivalence
Building
Value
Agriculture
Value
Total
Expected
Annual
Loss
Expected
Annual
Loss
Score
Rating
Contra Costa
County n/a n/a $10.8 Million $10.8 Million 99.4 Very High Expected annual loss scores are calculated utilizing an equation that combines values for exposure, annualized frequency, and historic loss ratios (Expected Annual Loss = Exposure x Annualized Frequency x Historic Loss Ratio).

4.6.3.9. FEMA Drought Risk Index Score
The drought Risk Index score and rating represent a community's relative risk for droughts when compared to the rest of the United States. Table 4-64 illustrates the drought Risk Index rating and score for Contra Costa County.

Table 4-64. Drought Risk Index (FEMA National Risk Index) Jurisdiction Rating Score
Contra Costa County Very High 99.3
Risk Index scores are calculated using an equation that combines scores for Expected Annual Loss due to natural hazards, Social Vulnerability and Community Resilience (Expected Annual Loss x Social Vulnerability / Community Resilience = Risk Index).

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Chapter 4: Hazard Identification and Risk Assessment 118 Table 4-65 represents the Drought Failure Total Risk Score for Contra Costa County, based on the Risk Assessment Methodology, as defined in this Plan. For further details on how the probability, extent, vulnerability, and impact factors were calculated, please refer to Table 4-59 through Table 4-62.

Additional details on how the Total Risk Score was calculated can be found in the Risk Assessment Methodology in Section 4.3 of this Plan.

Table 4-65. Drought Total Risk Score
Hazard
Event
Probability Consequence Total Risk
Probability
Factor Extent Vulnerability Impact ConsequenceScore
Total Risk
Score*
Drought 2 18 12 20 50 50
Consequence: Sum of all weighted factors.

Extent: Sum of the weighted Extent factors.

Vulnerability: Sum of the weighted Vulnerability factors.

Impact: Sum of the weighted Impact factors.

The Total Risk Score is a measure of Probability and Consequence.

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Chapter 4: Hazard Identification and Risk Assessment 119

4.6.4. Earthquake

4.6.4.1. Description
Earthquakes are rapid shaking of the earth caused by the release of energy stored in rocks. The United States Geological Survey (USGS) defines an earthquake as the sudden slip on a fault and the resulting ground shaking and radiated seismic energy caused by the slip, or by volcanic or magmatic activity, or other sudden stress changes in the earth. Ground shaking is a term utilized to describe the vibration of the ground during an earthquake. Other than the initial ground shaking, additional earthquake hazards include building collapses, displacement or cracking of the earth’s surface, landslides, liquefaction, tsunamis, seiches, flooding as a result of damage to dams or levees, and fires from ruptured gas lines, downed power lines and other sources. 132 Landslides, tsunamis, and flooding will be addressed separately in this Plan. Earthquakes cause both vertical and horizontal ground shaking which varies both in amplitude (the amount of displacement of the seismic waves) and frequency (the number of seismic waves per unit time), usually lasting less than 30 seconds. 133 Buildings with foundations resting on unconsolidated landfill and other unstable soil, and trailers or homes not tied to their foundations are at risk because they can be shaken off their mountings during an earthquake. When an earthquake occurs in a populated area, it may cause deaths, injuries, and extensive property damage.

Regulatory Environment
The Alquist-Priolo Earthquake Fault Zoning Act was signed into California Law on December 22, 1972, to mitigate the hazard of surface faulting to structures for human occupancy. The Act was a direct result of the significant damage to homes and businesses that occurred in the 1971 San Fernando Earthquake.

It enforces the following to increase earthquake safety:
134
Directs the California Geological Survey (CGS) to create maps of known fault zones.

Requires the sale of any home located within the fault zone designated on the maps to disclose that the property lies adjacent to a known fault.

Prohibits new construction of homes within these zones unless geologic studies are performed to prove that the fault will not pose a hazard to new structures proposed in these zones.

The State provides extensive regulations on earthquake-related issues. A key area for regulation is the California Building Standards Commission (CBSC). It is authorized by California Building Standards Law to administer the development, adoption, approval, publication, and implementation of California's building codes.

The California Building Standards Code, Title 24, serves as the basis for the design and construction of buildings in California. Improved safety, sustainability, maintaining consistency, new technology, construction methods, and reliability are paramount to the development of building codes. California’s building codes are published in their entirety every three (3) years. Intervening Code Adoption Cycles produce supplement pages halfway (18 months) into each triennial period. Amendments to California’s 132 U.S Geological Survey. (n.d.). Earthquake Hazards Program Glossary. Retrieved from https://www.usgs.gov/glossary/earthquake-hazards-program. 133 U.S Geological Survey. (n.d.). What are the Effects of Earthquakes. Retrieved from https://www.usgs.gov/programs/earthquake-hazards/what-are-effects-earthquakes. 134 Structural Engineers Association of Northern California. (1972). Events/Alquist-Priolo Earthquake Fault Zoning Act. Retrieved from https://legacy.seaonc.org/event/alquistprioloact/.

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Chapter 4: Hazard Identification and Risk Assessment 120 building standards are subject to a lengthy and transparent public participation process throughout each code adoption cycle.

The California Seismic Safety Commission provides an array of regulatory and advisory information regarding seismic safety via the following link ssc.ca.gov.

4.6.4.2. Hazard Location
Contra Costa County is located in an area with high seismic activity with numerous local faults, as illustrated in Figure 4-12 which shows the active geologic faults in the San Francisco Bay region. 135
There are five (4) primary active faults that can produce significant earthquakes in the Contra Costa County area – Hayward Fault, Calaveras North Fault, Concord-Green Valley Fault, Mount Diablo Fault, and Greenville Fault. These faults are described in Table 4-66.

Table 4-66. Active Faults Within the Contra Costa County Area Fault Description
San Andreas Fault
The San Andreas Fault, the largest fault in California, is the major tectonic boundary between the Pacific and North American plates. The Pacific plate is moving northwest relative to North America, while the North American plate is moving southward. The fault is approximately 808 miles long and extends, at least, 16 miles deep. The San Andreas Fault has a maximum earthquake potential of 8.0.

Calaveras North
Fault
The Calaveras (North Central) Fault is a major branch of the San Andreas Fault, located east of the Hayward Fault. It extends 76 miles from the San Andreas Fault near Hollister to Danville at its northern end. The Calaveras Fault is one of the most geologically active and complex faults in the San Francisco Bay Area (USGS, 2003).

There is a 26% probability of a magnitude 6.7 or greater earthquake along the Calaveras Fault to occur in the next 30 years.

Concord-Green
Valley Fault
The Concord-Green Valley Fault, named for being located under the City of Concord, is connected to the main Green Valley Fault. The fault extends approximately 11 miles east of West Napa Fault, from Mount Diablo to the Carquinez Strait. It is considered to be under high stress and has a 16 percent probability of experiencing a Magnitude 6.7 or greater earthquake in the next 30 years.

Greenville-Marsh
Creek Fault
The Greenville Fault is in the eastern Bay Area in Contra Costa and Alameda Counties. This dextral strike-slip fault zone borders the eastern side of Livermore Valley and is considered to be part of the larger San Andreas fault system in the central Coast Ranges. The fault zone extends from northwest of Livermore Valley along the Marsh Creek and Clayton faults toward Clayton Valley.

Hayward Fault
The Hayward Fault is an approximately 45-mile-long fault that runs through densely populated areas on the East Bay, parallel to the San Andreas Fault. The Hayward Fault extends through some of the Bay Area’s most populated areas, including San Jose, Oakland, and Berkeley. The Hayward Fault is a right-lateral slip fault.

The Hayward Fault is increasingly becoming a hazard priority throughout the Bay Area because of its increased chance for activity and its intersection with highly populated areas and critical infrastructure. The probability of experiencing a Magnitude 6.7 or greater earthquake along the Hayward Fault in the next 30 years is 33 percent. An earthquake of this magnitude has regional implications for the entire Bay Area, as the Hayward Fault crosses transportation and resource infrastructure, such as multiple highways and the Hetch-Hetchy Aqueduct.
135 United States Geological Survey. (n.d.). Map of Known Active Geologic Faults in the San Francisco Bay Region. Retrieved from https://www.usgs.gov/media/images/map-known-active-geologic-faults-san-francisco-bayregion.

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Chapter 4: Hazard Identification and Risk Assessment 121 Fault Description
Mount Diablo Thrust
Fault
The Mount Diablo thrust fault is in the vicinity of Mount Diablo in Contra Costa County.

The fault lies between the Calaveras Fault, the Greenville Fault, and the Concord Fault, all right-lateral strike slip faults, and appears to transfer movement from the Calaveras and Greenville Faults to the Concord Fault, while continuing to uplift Mount Diablo.

Figure 4-12. Faults Located in the San Francisco Bay Region

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Chapter 4: Hazard Identification and Risk Assessment 122 Figure 4-13 illustrates earthquake events greater than Magnitude 4.3 within 20 miles of Contra Costa County.

Figure 4-13. Earthquake History in Contra Costa County Area

4.6.4.3. Hazard Extent/Intensity
Earthquakes are measured both in terms of their inherent magnitude and in terms of their local intensity.

There are several standard measures of earthquakes, including the Richter Scale and the Modified Mercalli Intensity (MMI) scale. The Richter Scale measures the magnitude or amount of energy an earthquake releases. Magnitude is measured by seismographs. The MMI scale is an observed measurement of the earthquake’s intensity felt at the earth’s surface and it varies depending on the observer’s location at the earthquake’s epicenter. The MMI Scale is comprised of 12 increasing levels, designated by Roman numerals, that range from imperceptible shaking to catastrophic destruction.

Furthermore, the MMI can be used to map earthquake impacts. 136 Table 4-67 correlates the MMI Scale with the Richter Scale and effects of ground shaking. 136 Pacific Northwest Seismic Network. (n.d.). Magnitude/Intensity. Retrieved from https://pnsn.org/outreach/about-earthquakes/magnitude-intensity.

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Chapter 4: Hazard Identification and Risk Assessment 123 Table 4-67. Modified Mercalli Scale vs. Richter Scale
Earthquakes can trigger other types of ground failures, which could contribute to the damage. These include flow failures, landslides, and liquefaction. Liquefaction is not a type of ground failure; however, it is a physical process that occurs when shaking can mix groundwater and soil, liquefying and weakening the ground that supports buildings and severing utility lines. This is a problem in floodplains where the water table is relatively high, and the soil is more susceptible to liquefaction. 137

4.6.4.4. Warning Time
Earthquakes occur with little to no warning. Scientists cannot predict or forecast earthquakes. An earthquake early warning system uses earthquake science and technology of monitoring systems to alert devices and people when shaking waves generated by an earthquake are expected to arrive at a location.

Although it may not sound like a lot of time (compared to other natural hazards), seconds to tens of seconds of advance warning can allow people and systems to take action and protect life and property from destructive shaking. 138
In partnership with University of California Berkeley and USGS ShakeAlert, Cal OES developed the Earthquake Warning California system. The system uses ground-motion sensors to detect earthquakes that have already started and estimate their size, location, and impact. Once it detects a significant magnitude, the MyShake App (registration is required), Wireless Emergency Alerts, or Android Alerts 137 United States Geological Survey. (n.d.). What are the Effects of Earthquakes? Retrieved from:
https://www.usgs.gov/programs/earthquake-hazards/what-are-effects-earthquakes. 138 United States Geological Survey. (n.d.). What is the difference between earthquake early warning, earthquake forecasts, earthquake probabilities, and earthquake prediction? Retrieved from https://www.usgs.gov/faqs/whatdifference-between-earthquake-early-warning-earthquake-forecasts-earthquake-probabilities.

Intensity Effects
Richter
Scale
(approximate)
I. Instrumental Not felt. 1 – 2
II. Just Perceptible Felt by only a few people, especially on upper floors of tall buildings. 3 III. Slight Felt by people lying down, seated on a hard surface, or in the upper stories of tall buildings. 3.5
IV. Perceptible Felt indoors by many, by few outside; dishes and windows rattle. 4 V. Rather Strong Generally felt by everyone; sleeping people may be awakened. 4.5 VI. Strong Trees sway, chandeliers swing, bells ring, some damage from falling object. 5
VII. Very Strong General alarm; walls and plaster crack. 5.5 VIII. Destructive Felt in moving vehicles; chimneys collapse; poorly constructed buildings seriously damaged. 6
IX. Ruinous Some houses collapse; pipes break. 6.5
X. Disastrous Obvious ground cracks; railroad tracks bent; some landslides on steep hillsides. 7
XI. Very Disastrous Few buildings survive; bridges damaged or destroyed; all services interrupted (electrical, water, sewage, railroad; severe landslides. 7.5 XII. Catastrophic Total destruction; objects thrown into the air; river courses and topography altered. 8

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Chapter 4: Hazard Identification and Risk Assessment 124 sends a warning to mobile phone users when shaking is about to occur in the user’s area. The speed of the alert varies depending on the individual’s distance from the origin of the earthquake. Therefore, if the individual is closer to the earthquake’s epicenter the warning will arrive faster than someone that is further away. Table 4-68 outlines the alerting thresholds for the Earthquake Warning California system. 139
Table 4-68. Earthquake Warning California Alerting Thresholds Warning System Threshold
Wireless Emergency Alerts
The Wireless Emergency Alerts is used in response to magnitude 5.0 or greater earthquakes and will alert people who will experience a shaking level of MMI IV (light) or greater.

MyShake App
The MyShake App is used in response to magnitude 4.5 or greater earthquakes and will alert people who will experience a shaking level of MMI III (weak) or greater.

Android Alerts
The Android Alerts are used in response to magnitude 4.5 or greater earthquakes and will alert people who will experience a shaking level of MMI III (weak) or greater.

4.6.4.5. Probability and Frequency
Earthquake probabilities are calculated by projecting earthquake rates based on earthquake history and fault slip rates and the result is expressed as the probability that an earthquake of a specified magnitude will occur on a fault or within an area. 140
According to USGS, there is 72% probability of at least one (1) earthquake before 2043 with a magnitude

6.7 or greater that could cause widespread damage in the San Francisco Bay area. 141 In 2017, the Working Group on California Earthquake Probabilities (WGCEP) issued its third Uniform California Earthquake Rupture Forecast (UCERF3), which determined the likelihood of magnitude 6.7 and greater earthquakes by 2043. In the San Francisco Bay area, the probabilities are:
142
98% that an earthquake measuring magnitude 6.0 or greater. 72% that an earthquake measuring magnitude 6.7 or greater. 51% that an earthquake measuring magnitude 7.0 or greater. 20% that an earthquake measuring magnitude 7.5 or greater.

Probability of Future Hazard Events
Table 4-69 lists the probabilities, estimated by USGS, for earthquakes on major fault lines in the San Francisco Bay area where the Rodgers Creek and Hayward faults have high potential for experiencing major to great events. 143
139 California Governor’s Office of Emergency Services. (n.d.). Earthquake Warning California: Types of Alerts.

Retrieved from https://earthquake.ca.gov/get-alerts/.
140 California Department of Conservation. (n.d.). Earthquakes. Retrieved from https://www.conservation.ca.gov/cgs/earthquakes.
141 United States Geological Survey. (2016). Earthquake Outlook for the San Francisco Bay Region (2014 – 2043). Retrieved from https://pubs.usgs.gov/fs/2016/3020/fs20163020.pdf. 142 United States Geological Survey. (2015). UCERF3: A New Earthquake Forecast for California's Complex Fault System. Retrieved from https://pubs.usgs.gov/fs/2015/3009/pdf/fs2015-3009.pdf. 143 United States Geological Survey. (2016). Earthquake Outlook for the San Francisco Bay Region (2014 – 2043). Retrieved from https://pubs.usgs.gov/fs/2016/3020/fs20163020.pdf.

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Chapter 4: Hazard Identification and Risk Assessment 125 Table 4-69. Earthquake Probabilities for the San Francisco Bay Area (2014 – 2043) Fault Probability of One (1) or More Magnitude 6.7 or
Greater Earthquake
Rodgers Creek Fault 33%
Hayward 33%
Calaveras 26%
San Andreas 22%
Hunting Creek 16%
Green Valley 16%
Concord 16%
Greenville 16%
Berryessa 16%
Maacama 8%
San Gregorio 6%
The USGS National Seismic Hazard Maps reflect the best and most current understanding of earthquake hazard in an area, the distribution of damaging earthquake shaking across the United States and compares earthquake shaking hazard areas with other areas across the United States. Figure 4-14 illustrates the most recent USGS National Seismic Hazard Map which represents the expected number of occurrences of damaging earthquake shaking in 10,000 years. A “damaging earthquake shaking” in this map is that of MMI level VI or higher. 144
144 United States Geological Survey, Earthquake Hazards Program. (2022). Introduction to the National Seismic Hazard Maps. Retrieved from https://www.usgs.gov/programs/earthquake-hazards/science/introduction-nationalseismic-hazard-maps.

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Chapter 4: Hazard Identification and Risk Assessment 126 Figure 4-14. USGS National Seismic Hazard Map
The earthquake annualized frequency value represents the modeled frequency of an earthquake hazard occurrence per year. A higher annualized frequency value results in higher EAL and Risk Index scores.

Table 4-70 outlines the annualized frequency for earthquakes, based on FEMA NRI data, for Contra Costa County.

Table 4-70. Earthquake Annualized Frequency (FEMA National Risk Index) Location Events on Record
(2021 Dataset) Annualized Frequency
Contra Costa County N/A 0.970% chance per year
Annualized frequency is defined as the expected frequency or probability of a hazard occurrence per year.

4.6.4.6. Past Events
The San Francisco Bay area has experienced at least 22 earthquakes of magnitude 5.0 or greater since 1850. Table 4-71 lists the earthquakes of magnitude 5.0 or greater that have occurred in or within Contra Costa County.

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Chapter 4: Hazard Identification and Risk Assessment 127 Table 4-71. Earthquake Past Events Within or Near Contra Costa County (Magnitude 5.0 or Greater) 145
Date Magnitude Epicenter Location
August 24, 2014
(South Napa Earthquake) 6.0 South Napa
October 20, 2012
(King City Earthquake) 5.3 17.4 miles east-northeast of King City, California
October 31, 2007
(Alum Rock Earthquake) 5.5 3.7 miles north-northeast of East Foothills, California
August 12, 1998
(San Juan Bautista Earthquake) 5.1 6.2 miles southwest of Ridgemark, California April 18, 1990
(Northern California) 5.1

2.4 miles east of Interlaken, California

3.1 miles north-northwest of Aromas,
California
October 18, 1989
(Loma Prieta Earthquake) 6.9 Loma Prieta, California
August 8, 1989
(Santa Cruz County Earthquake) 5.4 2.5 miles east-southeast of Lexington Hills, California
June 27, 1989 5.3 5 miles east-southeast of Lexington Hills, California
June 13, 1988 5.3 3.7 miles east of East Foothills, California February 20, 1988 5.1 0.6 miles northeast of Tres Pinos, California March 31, 1986 5.7 9.3 miles northeast of East Foothills, California
January 26, 1986 5.5 1.9 miles east-northeast of Tres Pinos California
January 27, 1980 5.4 5.6 miles northeast of Livermore, California

4.6.4.7. Vulnerability and Impacts
Life Safety and Health: The entire population of the planning area is potentially exposed to direct and indirect impacts from earthquakes. Whether directly impacted or indirectly impacted, the entire population will have to deal with the consequences of earthquakes to some degree. Business interruption could keep people from working, road closures could isolate populations, and loss of functions of utilities could impact populations that suffered no direct damage from an event itself. A catastrophic earthquake would have significant impacts on the County since earthquake faults align with many County thoroughfares and population centers. West Contra Costa County is highly vulnerable to impacts from earthquakes along the Hayward Fault.

An earthquake impacts the life safety and health of the County by potentially causing injury or death to the population due to debris, failed infrastructure, and other hazards. The entire population of Contra Costa County falls within areas with the potential for either violent or extreme level of ground shaking.

However, some populations within the planning area may be more vulnerable to an earthquake event than others. For example, those with mobility issues as well as the elderly may have challenges with evacuating or traveling to a shelter without assistance if they cannot stay in their homes. 145 United States Geological Survey. (2023). Search Earthquake Catalog. Retrieved from https://earthquake.usgs.gov/earthquakes/search/.

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Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 128 Approximately, 11.4% of Contra Costa County population has a disability type (i.e., hearing, vision, cognitive, or ambulatory, self-care, and independent living difficulty). In Contra Costa County, the most prevalent type of disability is independent living difficulty (difficulty doing errands alone such as visiting a doctor’s office or shopping) followed by ambulatory difficulty (serious difficulty walking or climbing stairs).

As age increases, so does the percentage of each age group that has disability. For residents who are 75 years and over, 45.9% have a disability. The 65 to 74 years age group constitutes the second-highest number of disabilities with 22.9%. Disability and poverty are closely tied due to employment limitations.

Many senior-headed households have special needs due to their relatively low incomes, disabilities or limitations, and dependency needs. Specifically, many people aged 65 years and older live alone. In Contra Costa County, 201,136 residents are 65 years and older, representing 17.4% of the population and approximately 7.0% live below poverty level.
146,147
Table 4-72 summarizes the estimates for the disabled population by disability type, age, race, and ethnicity within Contra Costa County.148
Table 4-72. Disability Characteristics (2022)
Disability Type Estimate Percent
Hearing Difficulty 35,029 3.0%
Vision Difficulty 23,653 2.1%
Cognitive Difficulty 52,048 4.8%
Ambulatory Difficulty 57,988 5.3%
Self-Care Difficulty 25,797 2.4%
Independent Living Difficulty 52,546 5.8%
Age Estimate Percent
Under 5 years 428 0.7%
5 to 17 years 8,463 4.5%
18 to 34 years 18,358 7.8%
35 to 64 years 39,323 8.4%
65 to 74 years 26,084 22.9%
75 years and over 38,792 45.9%
146 United States Census Bureau. (2022). S0101: Age and Sex (2022: ACS 1-Year Estimates Subject Tables).

Retrieved from https://data.census.gov/table/ACSST1Y2022.S0101?g=050XX00US06013. 147 United States Census Bureau. (2021). S1701: Poverty Status in the Past 12 Months (2021: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2021.S1701?t=Income and Poverty:Official Poverty Measure:Poverty&g=050XX00US06013. 148 United States Census Bureau. (2022). S1810: Disability Characteristics (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1810?g=050XX00US06013,53037.

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Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 129 Race and Ethnicity Estimate Percent
White (not Hispanic or Latino) 60,307 13.6%
Black or African American 14,735 14.8%
American Indian and Alaska Native 14,735 10.4%
Asian 17,988 8.1%
Native Hawaiian and Other Pacific Islander 1,085 18.3%
Two (2) or More Races 16,292 9.0%
Some Other Race Alone 16,486 10.1%
Hispanic or Latino 28,798 9.3%
The median age of Contra Costa County residents is 40 years old. The population has been steadily aging since 1970, when the median age was about 28 years old. Since 2010, the fastest growing age group has been seniors 65 and older as the Baby Boomer generation ages. The second fastest growth occurred in the 55 to 64 age group, which includes younger Baby Boomers and older members of Generation X.149
The majority of the population in Contra Costa County is White (40.9%), with the next highest percent being Hispanic or Latino (27.0%) and Asian (19.3%). Additionally, 27.0% of the population in Contra Costa County is foreign-born. 150 Other than English, the most commonly spoken language in the County is Spanish (18.7%). The United States Census Bureau estimates that 14.5% of the County’s residents speak English “less than very well.”151 Table 4-73 summarizes the vulnerable and at-risk population for earthquakes.

Table 4-73. Vulnerability and At Risk Population
Category Estimate Percent
Population with Disability 131,448 11.4%
65 Years and Over 201,136 17.4%
75 to 84 Years Old 61,365 5.3%
85 Years and Over 24,486 2.1%
Language Other than English 416,505 38.0%
Spanish Spoken at Home 204,442 18.7%
Speak English “Less than very
well”152 158,965 38.2%
149 Contra Costa County. (2023). Contra Costa County 2045 General Plan (Public Review Draft). Retrieved from https://envisioncontracosta2040.org/wp-content/uploads/2024/02/Contra-Costa-County-General-Plan_PublicReview-Draft_Combined.pdf. 150 United States Census Bureau. (2022). DP02: Selected Social Characteristics in the United States (2022: ACS 1-Year Estimates Data Profiles). Retrieved from
https://data.census.gov/table/ACSDP1Y2022.DP02?g=050XX00US06013. 151 United States Census Bureau. (2022). S1601: Language Spoken at Home (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S1601?g=050XX00US06013. 152 Ibid.

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Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 130 Category Estimate Percent
Occupied Housing Unit: Mobile
Home153 5,363 1.3%
Homeless Population154 2,372 0.2%
Table 4-78 outlines the vulnerability of the total population exposed to earthquakes. Table 4-79 outlines the earthquake impacts to population and life safety, underserved/equity population, and essential operations, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Property Damage and Critical Infrastructure: According to Contra Costa County Assessor records, the total replacement value of buildings as of 2023 is $266.7 Billion. 155 Since all structures in the planning area are susceptible to earthquake impacts to varying degrees, this represents the property exposure to seismic events. Most of the buildings are residential. The greater potential danger is the collapse of older residential units built from reinforced masonry. Of the 415,194 occupied housing units in Contra Costa County, approximately 50.0% of the housing structures were built before the 1970s, prior to the implementation of substantial improvements to building codes and construction practices. Understanding the distribution of housing structures by age helps identify older and potentially more vulnerable buildings.

Table 4-74 outlines information on the age of the housing units, categorized by period when they were built.
156
Table 4-74. Physical Housing Characteristics in Contra Costa County Structure Built
(Year) Estimate Percent(of occupied housing)
2020 or Later 5,099 1.2%
2010 to 2019 25,087 6.0%
2000 to 2009 52,348 12.6%
1980 to 1999 114,930 27.7%
1960 and 1979 120,531 29.0%
1940 and 1959 79,758 19.2%
1939 or Earlier 17,441 4.2%
All critical facilities in the planning area are exposed to earthquake hazard. Hazardous materials releases can occur during an earthquake from fixed facilities or transportation related incidents. Transportation corridors can be disrupted during an earthquake, leading to the release of materials to the surrounding environment. Facilities holding hazardous materials are of particular concern because of possible 153 United States Census Bureau. (2022). S2504: Physical Housing Characteristics for Occupied Housing Units (2022: ACS 1-Year Estimates Subject Tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S2504?g=050XX00US06013. 154 Contra Costa Health. (2023). Health, Housing, and Homelessness Data Reports (Point-in-Time Count).

Retrieved from https://www.cchealth.org/services-and-programs/homeless-services/data. 155 Contra Costa County. (2023). 2023-2024 County Assessment Roll. Retrieved from https://www.contracosta.ca.gov/DocumentCenter/View/79697/2023-2024-BOS-Close-of-Assessment-Roll-Letterand-Reports-to-the-CCC-Board-of-Supervisors?bidId=. 156 United States Census Bureau. (2022). S2504: Physical Housing Characteristics for Occupied Housing Units (2022: ACS 1-Year Estimates Subject tables). Retrieved from https://data.census.gov/table/ACSST1Y2022.S2504?g=050XX00US06013.

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Packet Pg. 203 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) 2024 Hazard Mitigation Plan
Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 131 isolation of neighborhoods surrounding them. During an earthquake, structures storing these materials could rupture and leak into the surrounding area or an adjacent waterway, having a disastrous effect on the environment.

The following major roads in the planning area intersect moderate to very high liquefiable soils and thus are exposed to earthquakes:

Interstate 680
Interstate 80
State Highway 160
State Highway 242
State Highway 4
State Highway 4 Bypass
Road 20
Eastshore Freeway
Grove Shafter Freeway
John T Knox Freeway
Byron Highway
Pittsburg Antioch Highway
Port Chicago Highway
Branch Parkway
Chilpancingo Parkway
Garin Parkway
John Muir Parkway
Marina Bay Parkway
Mountaire Parkway
Richmond Parkway
Rossmoor Parkway
Village Parkway
Vineyards Parkway
Vintage Parkway
Waterworld Parkway
Windemere Parkway
There are a total of 554 critical assets (i.e., schools, nursing homes, fire stations, police stations, and hospitals) throughout the County and 100% of these assets are susceptible to earthquake impacts to varying degrees. Table 4-75 provides a breakdown of critical assets that are located within Contra Costa County.

Table 4-75. Critical Assets Vulnerable to Earthquakes
Asset Estimate Percent
(of total assets)
Schools (public schools, private schools) 360 100.0%
Nursing Homes 78 100.0%
Fire Stations 81 100.0%
Police Stations 24 100.0%
Hospitals 11 100.0%
Table 4-78 outlines the total property value exposed to earthquakes and how the changes in development in the past five (5) years, have affected the vulnerability of the community to earthquakes.

Table 4-79 outlines earthquake impacts on total property damage, potential future development, and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

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Packet Pg. 204 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) 2024 Hazard Mitigation Plan
Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 132 Building damage as a result of the magnitude 5.8 earthquake analysis was estimated using Hazus. In addition, annualized losses were calculated. Refer to the Hazus portion at the end of this section (Section

4.6.4.7).

Environment: Environmental problems as a result of an earthquake can be numerous and secondary hazards will likely have some of the most damaging effects on the environment. Earthquake induced landslides can significantly damage the surrounding habitat. It is also possible for streams to be rerouted after an earthquake. Rerouting can change the water quality, possibly damaging habitat and feeding areas.

Table 4-79 outlines earthquake impacts on the environment and the economy, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Changes in Development and Impact of Future Development: The County population has grown by

0.4% since completion of the previous Plan (in last five (5) years) which slightly results in additional people at risk from an earthquake. Growth in structures has accompanied population growth, although the number of housing units has not matched the overall increase. Much of the population growth has occurred in eastern sections of the County which are less likely to be exposed to seismic hazards.

Changes in development have had minimal impact on the vulnerability (between 5% and 9%) or expected losses due to earthquake. However, the Bay Area Association of Governments (ABAG) growth forecasts predict a steady increase in households through 2050. From 2015 to 2050, ABAG projects that the County’s number of households will grow by 44%.157 This increase in development will significantly increase the impact of an earthquake in the planning area.

Table 4-78 outlines how the changes in development in the past five (5) years have affected the vulnerability of the community to earthquakes. Table 4-79 outlines the earthquake impacts on potential future development, as outlined in the risk assessment methodology in Section 4.3 of this Plan.

Effects of Climate Change in Severity of Impacts: The exact nature and extent of this impact still needs to be studied and fully understood as it pertains to climate change. However, climate change can increase the risk of earthquake’s cascading hazards (e.g., landslides, tsunamis, flooding). The impacts of climate change for landslides, tsunamis, and flooding will be addressed separately in this Plan.

Table 4-79 outlines the climate change impacts to earthquakes in Contra Costa County, as outlined in the risk assessment methodology in Section 4.3 of this Plan. 157 Bay Area Association of Government. (2020). Plan Bay Area 2050 Final Blueprint Growth Pattern. Retrieved from https://planbayarea.org/digital-library/plan-bay-area-2050-final-blueprint-growth-pattern.

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Packet Pg. 205 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) Earthquake Medium Significant hazard event is likely to occur within 25 years. 2 N/A Earthquake
Extent/Intensity High Historical and/or probabilistic models/studies for this hazard indicate the possibility of a high-intensity incident. 3 9Catastrophic High Catastrophic hazard event is likely to occur at least once in 10 years. 3 9 Earthquake
Population Exposure High 30% or more of the population is exposed to the hazard. 3 9Property Exposure High 25% or more of the total assessed property value is exposed to the hazard. 3 6Changes inDevelopment Medium Changes in development have increased thevulnerability/exposure of the community to the hazardbetween 5% and 9%. 2 2 Earthquake
Population and LifeSafety High
Populations exposed to this hazard are likely to experiencesignificant adverse impacts, such as fatalities and severeinjuries. 3 9 Underserved/Equity High
Underserved populations exposed to the hazard are likely toexperience significant adverse/disproportionate impacts, suchas fatalities and severe injuries. 3 9 Property Damage High
More than $5 Million in property damages is expected from asingle major hazard event, or damages are expected to occurto 15% or more of the property value within the jurisdiction. 3 6 Economic High Where the total economic impact is likely to be greater than $10 Million. 3 3

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Packet Pg. 206 Attachment: B: 2024 Contra Costa Hazard Mitigation Plan Volume 1 (2025-018 : Adopting Volume 1 and the City of San Ramon’s Portion) Environmental High
Environmental impact from a single major hazard event islikely to be significant, requiring extensive outside resourcesand support; and/or repair, clean-up, restoration, and/orpreservation work. 3 3
Essential Operations High
Impact greater than 72 hours on the ability of the jurisdictionto meet the essential day-to-day operational demands andneeds of the community from a single major hazard event. 3 3
Future Development High Future development trends will significantly increase the impact/consequence of this hazard. 3 3Climate Change No Impact Climate change trends will not increase the risk of the hazard and its impacts. 0 0

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Chapter 4: Hazard Identification and Risk Assessment 135 HAZUS
Scenario: Magnitude 5.8 Event
Building damage as a result of the magnitude 5.8 earthquake analysis was estimated using Hazus. In addition, annualized losses were calculated. Hazus estimates that there are 341,000 buildings in the region which have been an aggregated total replacement of $218.5 Million. Approximately 91.0% of the buildings are associated with residential housing. Table 4-80 provides a general distribution of the building value within Contra Costa County. In terms of building construction types found in the County, wood frame construction makes up 89.0% of the building inventory and the remaining 11.0% is distributed between the other general building types (i.e., steel, concrete, precast, reinforced masonry, unreinforced masonry, manufactured housing).

Table 4-80. Contra Costa County Population and Building Value Data Population Residential Building
Value
Non-Residential
Building Value Total
1,165,927 $158.1 Million $60.3 Million $218.5 Million
The total economic loss estimated for the earthquake is $17.345 Million, which includes building and lifeline related losses based on the region's available inventory. HAZUS estimates that about 47,683 buildings will be at least moderately damaged. This is over 14% of the buildings in the region. There are an estimated 1,094 buildings that will be damaged beyond repair. Table 4-81 summarizes the expected building damage by general occupancy within Contra Costa County.

Table 4-81. Expected Building Damage by Occupancy
Damage
Level None Slight Moderate Extensive Complete
Occupancy Count % Count % Count % Count % Count %
Agriculture 353 0.20 207 0.18 140 0.34 41 0.75 8 0.74
Commercial 7,411 4.21 4,763 4.05 4,189 10.18 1,379 25.40 249 22.78 Education 317 0.18 182 0.15 118 0.29 32 0.58 4 0.38
Government 2,265 1.29 1,249 1.06 1,080 2.62 368 6.77 62 5.68 Industrial 1,815 1.03 1,204 1.02 1,197 2.91 439 8.09 93 8.51 Other
Residential 13,172 7.48 9,568 8.13 4,763 11.57 1,360 25.05 261 23.86 Religion 543 0.31 333 0.28 251 0.61 84 1.54 16 1.43
Single Family 150,185 85.30 100,201 85.13 29,421 71.48 1,728 31.82 401 36.62 TOTAL 176,060 117,707 41,159 5,430 1,094
Table 4-82 summarizes the expected damage by general building type.

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Contra Costa County, California
Chapter 4: Hazard Identification and Risk Assessment 136 Table 4-82. Expected Building Damage by Building Type
Building
Type
None Slight Moderate Extensive Complete
Count % Count % Count % Count % Count %
Wood 161,766 91.88 109,256 92.82 32,226 78.30 1,843 33.94 453 41.43 Steel 2,761 1.57 1,698 1.44 1,989 4.83 734 13.51 140 12.81 Concrete 3,133 1.78 2,090 1.78 1,612 3.92 601 11.07 101 9.20 Precast 1,840 1.04 1,223 1.04 1,415 3.44 524 9.64 83 7.63 Reinforced
Masonry 5,476 3.11 2,192 1.86 2,144 5.21 772 14.21 73 6.65 Unreinforced
Masonry 631 0.36 533 0.45 559 1.36 242 4.45 99 9.08
Manufactured
Housing 453 0.26 714 0.61 1,213 2.95 716 13.18 144 13.20 TOTAL 176,060 117,707 41,159 5,430 1,094
Hazus breaks critical facilities into two (2) groups – essential facilities (i.e., hospitals, medical clinics, schools, fire stations, police stations and emergency operations center) and high potential loss facilities (i.e., dams, levees, military installations, nuclear power plants and hazardous material sites). For essential facilities, there are 14 hospitals in the County with a total bed capacity of 1,804 beds. There are 384 schools, 78 fire stations, 35 police stations and two (2) emergency operation centers. With respect to high potential loss facilities, there are no dams identified within the inventory. The inventory also includes no hazardous material sites, no military installations and no nuclear power plants.

The Hazus model estimates the time to restore critical facilities to fully functional use. Before the flood event, Contra Costa County had 1,804 hospital beds available for use. On the day of the flood event, Hazus estimates that 893 hospital beds (50.0%) are available for use by patients already in the hospital and those injured by the earthquake. After one (1) week, 71.0% of the beds will be back in service and

91.0% will be operational after 30 days. Table 4-83 summarizes the expected damage to essential facilities in Contra Costa County. 301 (58.7%) essential facilities are expected to have functionality greater than 50% one (1) day after the earthquake event.

Table 4-83. HAZUS Earthquake Expected Damage to Essential Facilities Facility Total
At Least
Moderate
(Greater than
50% damage)
Complete
(Greater than
50% damage)
With
Functionality
(Greater than
50% on day 1)
Hospitals 14 4 0 9
Schools 384 55 0 225
Emergency Operations Center 2 1 0 1
Police Stations 35 8 0 22
Fire Stations 78 8 0 53
TOTAL 513 76 0 301
Hazus divides the lifeline inventory between transportation and utility lifeline systems. There are seven (7) transportation systems (i.e., highways, highways, railways, light rail, bus, ports, ferry and airports) and

San Ramon City CouncilFebruary 25, 2025

San Ramon City Council
February 25, 2025