Rolling Hills City Council
November 24, 2025

1 City Council
Monday, November 24, 2025, 7:00 PM
Regular Meeting
City of Rolling Hills
The meeting agenda is available on the City’s website. The City Council meeting will be live-streamed on the City’s website. View both the agenda and the live-streamed video.

Members of the public may submit written comments by emailing the City Clerk’s office at [email protected]. Your comments will become part of the official meeting record if received before 3pm on the meeting day. You must provide your full name, but please do not provide any other personal information that you do not want to be published.

View recordings to City Council meetings online.

AGENDA

1. Call to Order

2. Roll Call

3. Pledge of Allegiance

4. Presentations/Proclamations/Announcements

5. Approve Order of the Agenda
This is the appropriate time for the Mayor or Councilmembers to approve the agenda as is or reorder.

6. Blue Folder Items (Supplemental)
Blue folder (supplemental) items are additional back up materials to administrative reports, changes to the posted agenda packet, and/or public comments received after the printing and distribution of the agenda packet for receive and file.

6.A. For Blue Folder Documents approved at the City Council Meeting RECOMMENDATION: Receive and file.

7. Public Comment on Non-Agenda Items

2 This is the appropriate time for members of the public to make comments regarding items not listed on this agenda. Pursuant to the Brown Act, no action will take place on any items not on the agenda.

7.A. Supplemental Public Comment on Non-Agenda Items
RECOMMENDATION: Receive and file.

8. Consent Calendar
Business items, except those formally noticed for public hearing, or those pulled for discussion are assigned to the Consent Calendar. The Mayor or any Councilmember may request that any Consent Calendar item(s) be removed, discussed, and acted upon separately. Items removed from the Consent Calendar will be taken up under the "Excluded Consent Calendar" section below. Those items remaining on the Consent Calendar will be approved in one motion. The Mayor will call on anyone wishing to address the City Council on any Consent Calendar item on the agenda, which has not been pulled by Councilmembers for discussion.

8.A. Approve Affidavit of Posting for the City Council Regular Meeting of November 24, 2025
RECOMMENDATION: Approve.

8.B. Approve Motion to Read by Title Only and Waive Further Reading of All Ordinances and Resolutions Listed on the Agenda
RECOMMENDATION: Approve.

8.C. Approve the following Minutes of October 27, 2025 City Council Regular Meeting and October 29, 2025 City Council Special Meeting
RECOMMENDATION: Approve as presented.

8.D. Payment of Bills
RECOMMENDATION: Approve as presented.

8.E. Consider and approve the First Amendment to the Professional Services Agreement with NV5 for Sepulveda Canyon Continuous Flow Monitoring for Years 2026-2027, and 2027-2028
RECOMMENDATION: Approve an amendment to the Professional Services Agreement with NV5 for the Sepulveda Canyon Continuous Flow Monitoring program for monitoring years 2026-2027, and 2027-2028.

9. Excluded Consent Calendar Items

10. Commission Items

11. Public Hearings

11.A. Consideration of an Ordinance of the City Council of the City of Rolling Hills amending Chapter 17.28 of the Rolling Hills Municipal Code relating to Accessory Dwelling Units and Junior Accessory Dwelling Units and finding the action to be statutorily exempt from CEQA under Public Resources Code § 21080.17 RECOMMENDATION:

3 1. Open the public hearing, receive public testimony, close the public hearing, and by motion:

A. Find that the adoption of the proposed ordinance is statutorily exempt from review under the California Environmental Quality Act (CEQA) under Public Resources Code § 21080.17.

B. Waive full reading and introduce for first reading by title only an ordinance entitled: “AN

ORDINANCE OF THE CITY COUNCIL OF THE CITY OF ROLLING HILLS AMENDING CHAPTER 17.28 OF THE ROLLING HILLS MUNICIPAL CODE RELATING TO

ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY DWELLING UNITS AND

FINDING THE ACTION TO BE STATUTORILY EXEMPT FROM CEQA UNDER PUBLIC RESOURCES CODE § 21080.17.”

12. Discussion Items

12.A. Receive and File the Annual Municipal Stormwater Report for Fiscal Year 2024-25 RECOMMENDATION: Receive and file.

12.B. Approval of the Fifth Amended and Restated Joint Powers Agreement for the South Bay Cities Council of Governments
RECOMMENDATION: Approve and authorize the Mayor to execute the Fifth Amended and Restated Joint Powers Agreement of the South Bay Cities Council of Governments

13. Matters From the City Council

13.A. Receive and file a verbal update from the Storm Drain Ad Hoc Committee RECOMMENDATION: Receive and file.

14. Matters From Staff

14.A. Receive and file a Public Safety and Emergency Preparedness Update RECOMMENDATION: Receive and file the report and provide direction to staff

14.B. Receive and file the Property Line Survey for 1 Portuguese Bend Road, Tennis Court ADA Project Update, and, if desired provide direction to staff RECOMMENDATION: Receive and file, and, if desired provide direction to staff

14.C. Consideration of authorizing the City Manager to adjust the salary range for the Planning Manager position
RECOMMENDATION: Staff recommends that City Council approve revising the Planning Manager salary schedule to a range of $7,325 to $14,293 per month.

14.D. Receive and file a verbal update regarding the Los Angeles County Public Works Department of Building and Safety
RECOMMENDATION: Receive and file.

4 15. Recess to Closed Session

15.A. Public Employee Performance Evaluation Pursuant to Government Code Section 54957 (B)(1) Title: City Manager
RECOMMENDATION:

16. Reconvene to Open Session

17. Adjournment
Next regular meeting: Tuesday, December 9, 2025 at 7:00 p.m. in the City Council Chamber, Rolling Hills City Hall, 2 Portuguese Bend Road, Rolling Hills, California, 90274.

Notice:

Public Comment is welcome on any item prior to City Council action on the item.

Documents pertaining to an agenda item received after the posting of the agenda are available for review in the City Clerk's office or at the meeting at which the item will be considered.

In compliance with the Americans with Disabilities Act (ADA), if you need special assistance to participate in this meeting due to your disability, please contact the City Clerk at (310) 377-1521 at least 48 hours prior to the meeting to enable the City to make reasonable arrangements to ensure accessibility and accommodation for your review of this agenda and attendance at this meeting.

Item: 6.A.

Meeting Date: 11/24/2025
To: City Council
From: Christian Horvath, Assistant to the City Manager / City Clerk Thru: Karina Bañales, City Manager
Subject: For Blue Folder Documents approved at the City Council Meeting Background:

Discussion:

Fiscal Impact:

Recommendation:

Receive and file.

Attachments:

1. CL_AGN_251124_CC_Item7A

BLUE FOLDER ITEM (SUPPLEMENTAL)
Blue folder (supplemental) items are additional back up materials to administrative reports, changes to the posted agenda packet, and/or public comments received after the printing and distribution of the agenda packet for receive and file.

CITY COUNCIL MEETING
November 24, 2025
7A. Public Comment on Non-Agenda Items
From: Christian Horvath, Assistant to the City Manager / City Clerk CL_AGN_251124_CC_BF_Item7A_PublicCommentNA_Redacted.pdf

From: Elizabeth R
To: City Clerk
Cc:

Subject: For Council meeting 11/24/15, public input on issues: Removing isolation and restoring freedom to seniors Date: Monday, November 24, 2025 2:59:37 PM
Attachments: PV_Dial_A_Ride_Fact_Sheet_GRAPHIC.pdf
Caution: The sender name (Elizabeth R) is different from their email address ([email protected]), which may indicate an impersonation attempt. Verify the email's authenticity with the sender using your organization's trusted contact list before replying or taking further action.

Secured by Check Point
Good evening Mayor, Council Members, and Staff.

Thank you for the opportunity to speak tonight.

I am writing on behalf of my mother who has been a resident of Rolling Hills for over 25 years. I’m here to respectfully request that the Council consider adopting PV DialA-Ride as an official transportation option to remove isolation and restore independence and freedom to our senior community.

1. Rolling Hills Has an Aging Resident Base — and Real Mobility Needs Rolling Hills is a community with a notably older population. A third of our residents are over 65 (half over 55) years old, many of whom wish to age in place and continue living independently. Yet as we get older, driving becomes more difficult, and alternatives become more essential—for mobility, for medical care, and for dignity.

2. A Personal Story — Why This Matters Now
I’d like to share briefly why this issue is so important to me personally.

My mother is years old. She is deaf and partially blind—she recently did not pass the vision portion of her DMV test. When her caregiver is here, she can get to her doctor appointments, her pharmacy, even small social outings. But when her caregiver takes a vacation, my mother becomes effectively housebound. She cannot drive. She cannot simply call an Uber—she needs assistance, consistency, and predictable costs.

A service like PV Dial-A-Ride would enable her to continue attending medical appointments safely, reliably, and at a cost she can afford. And I know my mother is not the only resident in this city who faces this challenge.

3. PV Dial-A-Ride Is Low-Cost and Highly Accessible
PV Dial-A-Ride is already operating successfully across the Peninsula. For residents:

Registration is $10 per year
Rides are $6 each way on the Peninsula
It offers door-to-door service
And it is designed specifically for seniors and people with disabilities This is one of the most affordable transportation options available to seniors anywhere in the county.

4. No Operational Burden to Rolling Hills
Importantly, adopting PV Dial-A-Ride does not require Rolling Hills to run its own transportation system.

It is already operated by the Palos Verdes Peninsula Transit Authority and used by our neighboring cities—Rancho Palos Verdes, Rolling Hills Estates, and Palos Verdes Estates.

We would be joining an existing, functioning regional program that already serves our area.

5. A Small Change with Big Benefits
By joining PV Dial-A-Ride, the City would:

Expand mobility for seniors
Reduce isolation
Support medical access
Provide a lifeline for residents who cannot drive
And demonstrate that Rolling Hills cares about the well-being of its aging community All at a very modest cost.

6. Closing
I respectfully ask the Council to agendize this issue and direct staff to explore the steps needed for Rolling Hills to participate in PV Dial-A-Ride. This service would be life-changing for my mother—and profoundly beneficial for many other residents like her.

Thank you for your time and for your commitment to supporting all members of our community.
(END of ORAL PORTION)
___________________________________________________________ Dear City Clerk,
Please print out the attached info graphic "PV Dial A Ride Fact Sheet" to distribute to the public.

Thank you,
Elizabeth R
landline
On behalf of
Rolling Hills, CA 90274

FACT SHEET: Why Rolling Hills Should Adopt PV
Dial-A-Ride
Prepared for: Rolling Hills City Council
Prepared by: Elizabeth Russell
Date: November 24, 2025
■ What Is PV Dial-A-Ride?
PV Dial-A-Ride is a door-to-door transportation service operated by the Palos Verdes Peninsula Transit Authority (PVPTA). It serves seniors, individuals with disabilities, and residents needing mobility assistance.

It is already used in Rancho Palos Verdes, Rolling Hills Estates, and Palos Verdes Estates.

Cost Snapshot
$10 Annual Registration
$6 Per One-Way Peninsula Trip
Free Caregivers / Escorts
7 Days/Week Extended Hours
■ Why Rolling Hills Needs This Service
Rolling Hills has a senior population well above the county average. Many residents aged 65+ wish to age in place but face transportation barriers. Without a safe, reliable option, residents are at risk of isolation, limited mobility, and reduced access to essential services.
■ A Real Resident Case
A 93-year-old resident—deaf, partially blind, and no longer able to drive—becomes housebound whenever her caregiver is unavailable. PV Dial-A-Ride would allow her to attend medical appointments, pick up prescriptions, and maintain independence.
■ Benefits to the City of Rolling Hills
• No operational burden (managed by PVPTA) • No need to create a city-run program • Improves safety for seniors who should no longer drive • Supports health care access and reduces isolation • Aligns with neighboring cities • Low-cost, high-impact investment
■ Requested City Council Action

1. Place PV Dial-A-Ride on a future agenda. 2. Direct staff to explore partnership with PVPTA. 3. Evaluate costs, logistics, and potential impact. 4. Conduct community outreach to determine resident demand.

■ Key Takeaway
PV Dial-A-Ride is a low-cost, high-impact mobility solution supporting Rolling Hills’ aging population without requiring new city infrastructure. For many seniors, it is essential.

Item: 7.A.

Meeting Date: 11/24/2025
To: City Council
From: Christian Horvath, Assistant to the City Manager / City Clerk Thru: Karina Bañales, City Manager
Subject: Supplemental Public Comment on Non-Agenda Items Background:

None.

Discussion:

None.

Fiscal Impact:

None.

Recommendation:

Receive and file.

Attachments:

1. CL_AGN_251124_CC_Item7A_PublicComment01_Redacted

2. CL_AGN_251124_CC_Item7A_DialARideFactSheet_GRAPHIC

From: Elizabeth R
To: City Clerk
Cc:

Subject: For Council meeting 11/24/15, public input on issues: Removing isolation and restoring freedom to seniors Date: Monday, November 24, 2025 2:59:37 PM
Attachments: PV_Dial_A_Ride_Fact_Sheet_GRAPHIC.pdf
Caution: The sender name (Elizabeth R) is different from their email address ([email protected]), which may indicate an impersonation attempt. Verify the email's authenticity with the sender using your organization's trusted contact list before replying or taking further action.

Secured by Check Point
Good evening Mayor, Council Members, and Staff.

Thank you for the opportunity to speak tonight.

I am writing on behalf of my mother who has been a resident of Rolling Hills for over 25 years. I’m here to respectfully request that the Council consider adopting PV DialA-Ride as an official transportation option to remove isolation and restore independence and freedom to our senior community.

1. Rolling Hills Has an Aging Resident Base — and Real Mobility Needs Rolling Hills is a community with a notably older population. A third of our residents are over 65 (half over 55) years old, many of whom wish to age in place and continue living independently. Yet as we get older, driving becomes more difficult, and alternatives become more essential—for mobility, for medical care, and for dignity.

2. A Personal Story — Why This Matters Now
I’d like to share briefly why this issue is so important to me personally.

My mother is years old. She is deaf and partially blind—she recently did not pass the vision portion of her DMV test. When her caregiver is here, she can get to her doctor appointments, her pharmacy, even small social outings. But when her caregiver takes a vacation, my mother becomes effectively housebound. She cannot drive. She cannot simply call an Uber—she needs assistance, consistency, and predictable costs.

A service like PV Dial-A-Ride would enable her to continue attending medical appointments safely, reliably, and at a cost she can afford. And I know my mother is not the only resident in this city who faces this challenge.

3. PV Dial-A-Ride Is Low-Cost and Highly Accessible
PV Dial-A-Ride is already operating successfully across the Peninsula. For residents:

Registration is $10 per year
Rides are $6 each way on the Peninsula
It offers door-to-door service
And it is designed specifically for seniors and people with disabilities This is one of the most affordable transportation options available to seniors anywhere in the county.

4. No Operational Burden to Rolling Hills
Importantly, adopting PV Dial-A-Ride does not require Rolling Hills to run its own transportation system.

It is already operated by the Palos Verdes Peninsula Transit Authority and used by our neighboring cities—Rancho Palos Verdes, Rolling Hills Estates, and Palos Verdes Estates.

We would be joining an existing, functioning regional program that already serves our area.

5. A Small Change with Big Benefits
By joining PV Dial-A-Ride, the City would:

Expand mobility for seniors
Reduce isolation
Support medical access
Provide a lifeline for residents who cannot drive
And demonstrate that Rolling Hills cares about the well-being of its aging community All at a very modest cost.

6. Closing
I respectfully ask the Council to agendize this issue and direct staff to explore the steps needed for Rolling Hills to participate in PV Dial-A-Ride. This service would be life-changing for my mother—and profoundly beneficial for many other residents like her.

Thank you for your time and for your commitment to supporting all members of our community.
(END of ORAL PORTION)
___________________________________________________________ Dear City Clerk,
Please print out the attached info graphic "PV Dial A Ride Fact Sheet" to distribute to the public.

Thank you,
Elizabeth R
landline
On behalf of
Rolling Hills, CA 90274

FACT SHEET: Why Rolling Hills Should Adopt PV
Dial-A-Ride
Prepared for: Rolling Hills City Council
Prepared by: Elizabeth Russell
Date: November 24, 2025
■ What Is PV Dial-A-Ride?
PV Dial-A-Ride is a door-to-door transportation service operated by the Palos Verdes Peninsula Transit Authority (PVPTA). It serves seniors, individuals with disabilities, and residents needing mobility assistance.

It is already used in Rancho Palos Verdes, Rolling Hills Estates, and Palos Verdes Estates.

Cost Snapshot
$10 Annual Registration
$6 Per One-Way Peninsula Trip
Free Caregivers / Escorts
7 Days/Week Extended Hours
■ Why Rolling Hills Needs This Service
Rolling Hills has a senior population well above the county average. Many residents aged 65+ wish to age in place but face transportation barriers. Without a safe, reliable option, residents are at risk of isolation, limited mobility, and reduced access to essential services.
■ A Real Resident Case
A 93-year-old resident—deaf, partially blind, and no longer able to drive—becomes housebound whenever her caregiver is unavailable. PV Dial-A-Ride would allow her to attend medical appointments, pick up prescriptions, and maintain independence.
■ Benefits to the City of Rolling Hills
• No operational burden (managed by PVPTA) • No need to create a city-run program • Improves safety for seniors who should no longer drive • Supports health care access and reduces isolation • Aligns with neighboring cities • Low-cost, high-impact investment
■ Requested City Council Action

1. Place PV Dial-A-Ride on a future agenda. 2. Direct staff to explore partnership with PVPTA. 3. Evaluate costs, logistics, and potential impact. 4. Conduct community outreach to determine resident demand.

■ Key Takeaway
PV Dial-A-Ride is a low-cost, high-impact mobility solution supporting Rolling Hills’ aging population without requiring new city infrastructure. For many seniors, it is essential.

FACT SHEET: Why Rolling Hills Should Adopt PV
Dial-A-Ride
Prepared for: Rolling Hills City Council
Prepared by: Elizabeth Russell
Date: November 24, 2025
■ What Is PV Dial-A-Ride?
PV Dial-A-Ride is a door-to-door transportation service operated by the Palos Verdes Peninsula Transit Authority (PVPTA). It serves seniors, individuals with disabilities, and residents needing mobility assistance.

It is already used in Rancho Palos Verdes, Rolling Hills Estates, and Palos Verdes Estates.

Cost Snapshot
$10 Annual Registration
$6 Per One-Way Peninsula Trip
Free Caregivers / Escorts
7 Days/Week Extended Hours
■ Why Rolling Hills Needs This Service
Rolling Hills has a senior population well above the county average. Many residents aged 65+ wish to age in place but face transportation barriers. Without a safe, reliable option, residents are at risk of isolation, limited mobility, and reduced access to essential services.
■ A Real Resident Case
A 93-year-old resident—deaf, partially blind, and no longer able to drive—becomes housebound whenever her caregiver is unavailable. PV Dial-A-Ride would allow her to attend medical appointments, pick up prescriptions, and maintain independence.
■ Benefits to the City of Rolling Hills
• No operational burden (managed by PVPTA) • No need to create a city-run program • Improves safety for seniors who should no longer drive • Supports health care access and reduces isolation • Aligns with neighboring cities • Low-cost, high-impact investment
■ Requested City Council Action

1. Place PV Dial-A-Ride on a future agenda. 2. Direct staff to explore partnership with PVPTA. 3. Evaluate costs, logistics, and potential impact. 4. Conduct community outreach to determine resident demand.

■ Key Takeaway
PV Dial-A-Ride is a low-cost, high-impact mobility solution supporting Rolling Hills’ aging population without requiring new city infrastructure. For many seniors, it is essential.

Item: 8.A.

Meeting Date: 11/24/2025
To: City Council
From: Christian Horvath, Assistant to the City Manager / City Clerk Thru: Karina Bañales, City Manager
Subject: Approve Affidavit of Posting for the City Council Regular Meeting of November 24, 2025
Background:

None.

Discussion:

None.

Fiscal Impact:

None.

Recommendation:

Approve.

Attachments:

1. CL_AGN_251124_CC_AffidavitofPosting

Administrative Report

8.A., File # 2025-206 Meeting Date: 11/24/2025
To: MAYOR & CITY COUNCIL
From: Christian Horvath, City Clerk
TITLE

APPROVE AFFIDAVIT OF POSTING FOR THE CITY COUNCIL REGULAR MEETING OF NOVEMBER 24, 2025

EXECUTIVE SUMMARY

STATE OF CALIFORNIA )

COUNTY OF LOS ANGELES ) SS

CITY OF ROLLING HILLS )

AFFIDAVIT OF POSTING
In compliance with the Brown Act, the following materials have been posted at the locations below.

Legislative Body City Council
Posting Type Regular Meeting Agenda
Posting Location 2 Portuguese Bend Road, Rolling Hills, CA 90274 City Hall Window
City Website: https://www.rolling-hills.org/government/agendas_meetings.php https://rollinghillsca.portal.civicclerk.com/
Meeting Date & Time NOVEMBER 24, 2025 7:00pm Open Session As City Clerk of the City of Rolling Hills, I declare under penalty of perjury, the document noted above was posted at the date displayed below.

Christian Horvath, City Clerk
Date: November 21, 2025

Item: 8.C.

Meeting Date: 11/24/2025
To: City Council
From: Christian Horvath, Assistant to the City Manager / City Clerk Thru: Karina Bañales, City Manager
Subject: Approve the following Minutes of October 27, 2025 City Council Regular Meeting and October 29, 2025 City Council Special Meeting
Background:

None.

Discussion:

None.

Fiscal Impact:

None.

Recommendation:

Approve as presented.

Attachments:

1. CL_MIN_251027_CC_F

2. CL_MIN_251029_CC_Special_F

MINUTES – CITY COUNCIL MEETING
Monday, October 27, 2025

Minutes
Rolling Hills City Council
Monday, October 27, 2025
Regular Meeting 7:00 p.m.

1. Call To Order
The City Council of the City of Rolling Hills met in person on the above date at 7:00 p.m. Mayor Pieper presiding.

2. Roll Call
Councilmembers Present: Mirsch, Black, Dieringer, Mayor Pieper Councilmembers Absent: Wilson
Staff Present: Karina Bañales, City Manager
Christian Horvath, Assistant to the City Manager / City Clerk Reina Schaetzl, Willdan Contract Senior Planner
Nicolas Papajohn, City Attorney

3. Pledge Of Allegiance – Mayor Pro Tem Dieringer

4. Presentations / Proclamations / Announcements – None

5. Approve Order of the Agenda
Motion by Councilmember Mirsch, seconded by Councilmember Black to approve the order of the agenda.

Motion carried unanimously with the following vote:

AYES: Mirsch, Black, Dieringer, Mayor Pieper
NOES: None
ABSENT: Wilson

6. Blue Folder Items (Supplemental) – None

7. Public Comment on Non-Agenda Items
Public Comment: Carrie Lieb, Tom Lieb, Judith Haenel

8. Consent Calendar

8.A. Approve Affidavit of Posting for the City Council Regular Meeting of October 27, 2025

8.B. Approve Motion to Read by Title Only and Waive Further Reading of All Ordinances and Resolutions Listed on the Agenda

8.C. Approve the following Minutes of October 13, 2025: City Council Regular Meeting

8.D. Payment of Bills

8.E. Republic Services Recycling Tonnage and Complaint Reports for September 2025

MINUTES – CITY COUNCIL MEETING
Monday, October 27, 2025

Councilmember Black noted the Cal Water bill seemed very high. Staff provided potential assumptions including broken sprinkler heads and noted they would look into it.

Motion by Councilmember Black, seconded by Councilmember Mirsch to approve the Consent Calendar.

Motion carried unanimously with the following vote:

AYES: Mirsch, Black, Dieringer, Mayor Pieper
NOES: None
ABSENT: Wilson

9. Excluded Consent Calendar Items – None

10. Commission Items

10.A. Zoning Case No. 25-033: Site Plan Review for the construction of a new 19-foot stable, nonexempt grading, expansion of building pad, walls to exceed 3 feet height not to exceed maximum 5 feet height, and other improvements; Conditional Use Permit for stable to exceed maximum 200 square feet; and Variances to exceed 40 percent disturbance and for construction in the front yard setback for the location at 1 Hackamore Road and finding the same exempt from the California Environmental Quality Act (Mahler & Nuccio) (Lot-30 EF) Presentation by Willdan Contract Senior Planner Schaetzl Mayor Pro Tem Dieringer requested that the presented table add back in the maximum allowances in future reports.

Motion by Councilmember Black, seconded by Councilmember Mirsch to receive and file. Motion carried unanimously with the following vote:

AYES: Mirsch, Black, Dieringer, Mayor Pieper
NOES: None
ABSENT: Wilson

11. Public Hearings – None

12. Discussion Items – None

13. Matters From the City Council
Councilmember Black, in response to public comments on non-agenda items, opined that the fence adjacent to the City Tennis Court property should be moved to the property line to ensure it was respected.

Councilmember Mirsch made a motion to add an agenda item to the next meeting. Staff informed the Council that they intended to bring forward a receive and file for the property survey.

Mayor Pro Tem Dieringer had a question related to water flow monitoring options for City irrigation infrastructure. She also noted that staff would need to agendize an item from the South Bay Cities Council of Governments at the next meeting.

13.A. Discussion and review of the City’s Blue Newsletter: Purpose, Content, and Opportunities for Enhancement
Presentation by City Manager Bañales

MINUTES – CITY COUNCIL MEETING
Monday, October 27, 2025

Public Comment: Melissa McNabb
After discussion amongst City Council members, no action was taken.

14. Matters From Staff

14.A. Receive and file the Code Compliance Quarterly Report for the Third Quarter of 2025 (July 1 - September 30)
Presentation by City Manager Bañales
Motion by Mayor Pro Tem Dieringer seconded by Councilmember Black to receive and file. Motion carried unanimously with the following vote:

AYES: Mirsch, Black, Dieringer, Mayor Pieper
NOES: None
ABSENT: Wilson

15. Recess To Closed Session - The City Council did not Recess into Closed Session

15.A. Conference With Legal Counsel - Existing Litigation Government Code Section 54956.9(D)(1) The City Finds, Based on Advice from Legal Counsel, that Discussion in Open Session will Prejudice the Position of the City in the Litigation. (2 Cases) A. Name of Case: City of Rolling Hills v. SCE CPUC Docket No. C.24-10-008 B. Name of Case: City of Rolling Hills v. SoCalGas CPUC Docket No. C.24-10-009

16. Reconvene To Open Session – None

17. Adjournment: 8:04 p.m.

The meeting was adjourned at 8:04 p.m. on October 27, 2025. The next regular meeting of the City Council is scheduled to be held on Monday, November 10, 2025 beginning at 7:00 p.m. in the City Council Chamber at City Hall, 2 Portuguese Bend Road, Rolling Hills, California. It will also be available via City’s website link at: https://www.rolling-hills.org/government/agenda/index.php All written comments submitted are included in the record and available for public review on the City website.

Respectfully submitted,
____________________________________
Christian Horvath, City Clerk
Approved,
____________________________________
Jeff Pieper, Mayor

MINUTES – CITY COUNCIL SPECIAL MEETING
Monday, October 29, 2025

Minutes
Rolling Hills City Council
Wednesday, October 29, 2025
Special Meeting 4:00 p.m.

1. Call To Order
The City Council of the City of Rolling Hills met in person on the above date at 4:11 p.m. Mayor Pieper presiding.

2. Roll Call
Councilmembers Present: Mirsch, Wilson, Dieringer, Mayor Pieper Councilmembers Absent: Black
Staff Present: Karina Bañales, City Manager
Christian Horvath, Assistant to the City Manager / City Clerk Nicolas Papajohn, City Attorney

3. Pledge Of Allegiance – Mayor Pieper skipped the pledge

4. Public Comment on Non-Agenda Items

5. Consent Calendar

5.A. Approve Affidavit of Posting for The City Council Special Meeting of October 29, 2025 Motion by Councilmember Wilson, seconded by Mayor Pro Tem Dieringer to approve the Consent Calendar.

Motion carried unanimously with the following vote:

AYES: Mirsch, Wilson, Dieringer, Mayor Pieper
NOES: None
ABSENT: Black
Councilmember Black arrived at 4:12 p.m.

6. Recess to Closed Session – 4:12 p.m.

6.A. Conference With Legal Counsel - Existing Litigation Government Code Section 54956.9(D)(1) The City Finds, Based on Advice from Legal Counsel, that Discussion in Open Session will Prejudice the Position of the City in the Litigation. (2 Cases) A. Name of Case: City of Rolling Hills v. SCE CPUC Docket No. C.24-10-008 B. Name of Case: City of Rolling Hills v.

SoCalGas CPUC Docket No. C.24-10-009

7. Reconvene To Open Session – 4:39 p.m.

9. Adjournment: 4:39 p.m.

The meeting was adjourned at 4:39 p.m. on October 29, 2025. The next regular meeting of the City Council is scheduled to be held on Monday, November 10, 2025 beginning at 7:00 p.m. in the City Council Chamber at City Hall, 2 Portuguese Bend Road, Rolling Hills, California. It will also be available via City’s website link at: https://www.rolling-hills.org/government/agenda/index.php

MINUTES – CITY COUNCIL SPECIAL MEETING
Monday, October 29, 2025

All written comments submitted are included in the record and available for public review on the City website.

Respectfully submitted,
____________________________________
Christian Horvath, City Clerk
Approved,
____________________________________
Jeff Pieper, Mayor

Item: 8.D.

Meeting Date: 11/24/2025
To: City Council
From: Christian Horvath, Assistant to the City Manager / City Clerk Thru: Karina Bañales, City Manager
Subject: Payment of Bills
Background:

None.

Discussion:

None.

Fiscal Impact:

Recommendation:

Approve as presented.

Attachments:

1. CL_AGN_251110_CC_PaymentOfBills_E

2. CL_AGN_251124_CC_PaymentOfBills_E

Item: 8.E.

Meeting Date: 11/24/2025
To: City Council
From: Samantha Crew, Management Analyst
Thru: Karina Bañales, City Manager
Subject: Consider and approve the First Amendment to the Professional Services Agreement with NV5 for Sepulveda Canyon Continuous Flow Monitoring for Years 2026-2027, and 2027-2028
Background:

The City of Rolling Hills is required to comply with the Los Angeles County Municipal Separate Storm Sewer System (MS4) Permit, which regulates discharges to local water bodies to protect water quality. A component of this permit subjects the City to meet the Total Maximum Daily Load (TMDL) for nutrients in Machado Lake. Stormwater runoff from the City discharges to three receiving waters, Santa Monica Bay, Los Angeles Harbor, and Machado Lake, and the MS4 requires municipalities to conduct outfall monitoring to characterize water quality as runoff leaves City boundaries.

In September 2020, the City awarded a Professional Services Agreement (PSA) to NV5 in the amount of $44,556.40 to establish and monitor a new location in Sepulveda Canyon for the 2020- 2021 monitoring season. Due to limited precipitation, few qualifying wet-weather events occurred, and the City amended the agreement in May 2021 to extend services using unexpended funds. In August 2021, a Second Amendment was approved to include a hydrologic analysis of the Sepulveda Canyon’s retentive capacity relative to the 85th percentile, 24-hour runoff event, and to extrapolate those findings to other canyons within the City.

In January 2022, the City submitted an Addendum to the Palos Verdes Peninsula Enhanced Watershed Management Program (EWMP) designating Rolling Hills as an 85th percentile, 24-hour runoff retention area. This designation was supported by NV5’s Technical Memorandum (Attachment A) of June 2022, which confirmed that Sepulveda Canyon retained all storm events less than or equal to that threshold between October 2020 and April 2022. On October 19, 2022, the Los Angeles Regional Water Quality Control Board conditionally approved the Palos Verdes Peninsula EWMP, recognizing the City’s retention-based compliance approach and requiring ongoing flow monitoring to maintain approval status (Attachment B). This achievement was made possible through the work of NV5 and the City's stormwater consultant, McGowan Consulting.

To meet these monitoring obligations, the City executed a Third Amendment with NV5 for continued

flow monitoring from 2022 through 2025 in the amount of $39,445. NV5 has since completed the contracted tasks.

The Regional Board’s conditional approval also applied to the Palos Verdes Peninsula Watershed Management Program (WMP), prepared jointly by Los Angeles County, the Flood Control District, and the cities of Palos Verdes Estates, Rancho Palos Verdes, Rolling Hills Estates, and Rolling Hills.

The WMP emphasizes compliance with the MS4 Permit (NPDES No. CAS004004) through updated pollutant listings, drainage mapping, project tracking, and adaptive management. For Rolling Hills, this includes continued verification of stormwater retention performance in Sepulveda Canyon.

Most recently, due to the November 10 City Council meeting cancellation and the onset of the wet weather season, it was critical for NV5 to continue monitoring flow conditions without interruption to support the City’s efforts to maintain the approved status of Sepulveda Canyon’s retentive capacity relative to the 85th percentile, 24-hour runoff event. Although the PSA was transmitted to NV5 in advance of the recent rain event, it was not executed prior to the storm, as NV5’s legal review required additional time. Nonetheless, NV5 conducted a courtesy field visit during the rainstorm event on November 15th. The inspection favorably indicated that no flow was present.

On November 18, 2025, the City Manager executed a PSA with NV5 for Sepulveda Canyon continuous flow monitoring for the 2025–26 monitoring year (Attachment C). The original scope of work contemplated a three-year term; however, because a three-year expenditure exceeded the City Manager’s spending authority, staff revised the PSA to a one-year agreement, bringing the expenditure within the City Manager’s approval authority.

Staff are requesting that the City Council consider approval of an amendment to the recent PSA to include two additional monitoring years to the term, consistent with the originally planned duration, to provide continuity in monitoring and reduce the frequency of future contract renewal processes, allowing staff to more efficiently manage stormwater compliance obligations.

Discussion:

Rolling Hills must retain runoff from the 85th percentile, 24-hour storm event to comply with the City’s retention-based stormwater strategy under the MS4 Permit. Compliance is demonstrated through continuous flow monitoring at the Middleridge Road culvert in Sepulveda Canyon. This retentionbased approach, focused on verifying natural hydrologic performance rather than constructing multiple structural Best Management Practices (BMPs), represents a unique and cost-effective compliance strategy compared to neighboring jurisdictions.

The previous Professional Services Agreement (PSA) and amendments for continuous flow monitoring were executed under the company’s former name, Alta Environmental, L.P. dba NV5. NV5 has since clarified that they no longer operate under the Alta Environmental name and request that a new PSA be executed under their current corporate identity, NV5, to ensure consistency across future agreements and official records.

NV5 has fulfilled all tasks under the existing contract.

To maintain regulatory compliance and continuity, NV5 proposes an extension of the one-year monitoring term to cover the 2026-2027, and 2027-2028 seasons, with the contract extending through December 31, 2028. Under the proposed scope, NV5 will install and maintain monitoring equipment, including an ultrasonic flow sensor, data logger, and remote field camera with cellular telemetry, to collect and transmit near real-time data on flow conditions and storm retention performance. Each

monitoring year will conclude with an annual hydrologic assessment summarizing rainfall, flow data, and photographic documentation.

Staff is seeking authorization to execute the new first amendment to the Professional Services Agreement with NV5, which has been prepared to reflect the company’s current name, updated scope of work, and extended contract term through December 31, 2028. The agreement incorporates NV5’s scope of work (Attachment D), outlining 2 years of continuous flow monitoring in Sepulveda Canyon, along with annual hydrologic assessments to verify compliance with the City’s 85th percentile stormwater retention requirement. The previous PSA and amendments, executed under the company’s former name Alta Environmental, L.P. dba NV5, are included for reference (Attachments E, F, G, H). It is important to note that the City Attorney has reviewed and approved this contract.

Fiscal Impact:

Sepulveda Canyon Continuous Flow Monitoring Cost for years 2026-2027, and 2027-2028 Task 1: Spread over 2 yrs - Project Management and Coordination - $3,810.00 Task 2: 2026-2027 - Flow Monitoring (12 Months) - $17,406.90 Task 3: 2027-2028 - Flow Monitoring (12 Months) - $18,679.20 Total Project Cost: $39,896.10
Although the proposed amendment extends NV5’s monitoring services for the 2026–2027 and 2027– 2028 monitoring years, staff would like to note that the current fiscal year’s Measure W funding already accounts for the ongoing work. The Planned Expenditures for FY 2025–26 under the Safe, Clean Water Municipal Program (Attachment I) include the Sepulveda Canyon Monitoring Study with an estimated annual cost of $25,000 to be recovered from Measure W funds. The City’s actual annual cost for NV5 services for FY 2025–26 is approximately $16,300, which remains well within the programmed Measure W allocation. This context demonstrates that the monitoring work is fully supported by existing Measure W revenue and that future-year monitoring under the proposed amendment is consistent with the City’s established stormwater compliance funding strategy.

Recommendation:

Approve an amendment to the Professional Services Agreement with NV5 for the Sepulveda Canyon Continuous Flow Monitoring program for monitoring years 2026-2027, and 2027-2028.

Attachments:

1. Attachment A -
PW_STP_220608_NV5_SepulvedaCanyonContinuousFlowTechnicalMemorandum_Final

2. Attachment B - CL_AGN_221020_CC_PVP_WMP_ConditionalApproval

3. Attachment C - CA_AGR_251111_NV5_1Year_F_E

4. Attachment D - CA_AGR_251124_NV5_2026-2028

5. Attachment E - CA_AGR_200914_Alta(NV5)_PSA_FlowMonitoring

6. Attachment F - CA_AGR_210527_Alta(NV5)_PSA_1stAmendment_FlowMonitoring

7. Attachment G - CA_AGR_210902_Alta(NV5)_PSA_2ndAmendment_FlowMonitoring

8. Attachment H - CA_AGR_221123_Alta(NV5)_PSA_3rdAmendment_FlowMonitoring

9. Attachment I - CL_AGN_251110_CC_SCWAnnualPlan2025-26

3777 Long Beach Boulevard, Annex Building | Long Beach, CA 90807 NV5.com O.800-777-0605
June 8, 2022
Elaine Jeng
City Manager
City of Rolling Hills
2 Portuguese Bend Road
Rolling Hills, CA 90274
Subject: Sepulveda Canyon Continuous Flow Technical Memorandum Dear Ms. Jeng,
NV5 is pleased to provide the City of Rolling Hills(Rolling Hills) with this technical memorandum presenting the results of the continuous flow data collected to determine if Sepulveda Canyon effectively retains the 85th percentile, 24-hour storm event.

METHODOLOGY
Continuous flow monitoring was conducted in Sepulveda Canyon over the course of two wet weather seasons from October 26, 2020 through April 30, 2022. The continuous flow monitoring equipment was located in Sepulveda Canyon at the road crossing of Middleridge Road (33.773522, -118.348538), which is an accessible location near the bottom of the canyon suitable for flow monitoring. Sepulveda Canyon is located on the east side of the Palos Verdes Peninsula, south of N. Palos Verdes Drive, and about 0.5 miles east of Crenshaw Boulevard. Rainfall data for October 2020 through April 2022 was obtained from the Los Angeles County Department of Public Works (LADPW) Rolling Hills rain gauge (Alert ID 2570300, 33.75694, -118.3544, elevation 1262 feet) and historical rainfall data from October 2016 through April 2020 was obtained from the MesoWest Palos Verdes rain gauge (Station ID AS176, 33.75964, -118.36685, elevation 1204 feet). The continuous flow monitoring location and the rainfall gauge locations are provided in Figure 1. Photographs of the continuous flow monitoring location are provided in Figure 2 and Figure 3.

The flow equipment included an ultra-sonic sensor and data logger with near real-time access through NV5’s MS4 Flow SystemTM web portal. During the installation, the MS4 outfall pipe dimensions and slope were measured, and the flow equipment was programmed to continuously log level measurements in inches and flow measurements in both gallons per minute (gpm) and cubic feet per second (cfs). Upon completion of the installation, the wireless data logger was programmed to transmit the level and flow data to the secure web portal at five minute intervals.

Sepulveda Canyon Continuous Flow Technical Memorandum

Flow rates were measured in accordance with the United States Environmental Protection Agency (USEPA) National Pollutant Discharge Elimination System (NPDES) Storm Water Sampling Guidance Document (USEPA-833-B-92-001). Calibration of the equipment was conducted immediately prior to deployment. Periodic maintenance and calibration was scheduled based on site evaluations of the near real-time flow data. Calibrations were conducted in accordance with the manufacturer’s specifications and equipment was calibrated on-site and field verified for accuracy with a level measurement tape. The flow monitoring equipment was maintained throughout the deployment to ensure functionality. Routine quality assurance/quality control of the level data and flow calculations was conducted and the data were reviewed remotely to prevent data gaps through routine data evaluation. In addition to the remote review of the flow equipment, monthly inspections were conducted from November 2020 through June 2021 and field visits were conducted during storm events throughout the deployment period from October 26, 2020 through April 30, 2022 to confirm the flow measurements and document the site conditions.

Figure 1. Continuous Flow Monitoring and Rain Gauge Locations

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 2. Continuous Flow Monitoring Location
Figure 3. Continuous Flow Monitoring Location

Sepulveda Canyon Continuous Flow Technical Memorandum

CONTINUOUS FLOW MONITORING RESULTS
Sepulveda Canyon is the largest canyon system within the Machado Lake tributary area of Rolling Hills, and the second largest in Rolling Hills. It extends from the top of the Palos Verdes Peninsula at the drainage divide between the Machado Lake and Santa Monica Bay watersheds, running northward toward the northern boundary of Rolling Hills. Sepulveda Canyon consists of approximately 280 acres lying entirely within Rolling Hills with land use representative of the city as a whole. The 85th and 95th percentile, 24-hour storm event rainfall depths for Sepulveda Canyon are 1.0 and 2.0 inches, respectively, which are estimated based on the isohyetal map obtained from the 2006 LACDPW Hydrology Manual and GIS database.

A summary of the rainfall totals for the storm events during the 2020-2021 wet weather season (October through April) are provided in Table 1. No flow was recorded by the Sepulveda Canyon monitoring equipment throughout the 2020-2021 wet weather season, including the two storm events greater than the 85th percentile, 24-hour storm event (December 28, 2020 and January 28, 2021). The continuous flow data from October 26, 2020 through June 30, 2021 are provided in Attachment 1.

Table 1. 2020-2021 Storm Event Summary
Storm Start
Date
Storm End
Date
Total Rainfall
(inches)1
11/07/2020 11/07/2020 0.10
12/28/2020 12/28/2020 1.202
01/23/2021 01/23/2021 0.32
01/24/2021 01/25/2021 0.19
01/28/2021 01/29/2021 1.132
03/03/2021 03/03/2021 0.12
03/10/2021 03/11/2021 1.053
03/15/2021 03/15/2021 0.22

1. Los Angeles County Department of Public Works Rolling Hills rain gauge

2. Exceeds 85th percentile, 24-hour storm event rainfall depth

3. Does not exceed the 85th percentile, 24-hour storm event rainfall depth. Less than 1.0 inches was observed within the first 24 hours.

A summary of the rainfall totals for the storm events during the 2021-2022 wet weather season (October through April) are provided in Table 2, which included two storm events greater than the 85th percentile, 24-hour storm event (December 23-24, 2021 and December 29-30, 2021). The continuous flow data from July 1, 2021 through April 30, 2022 are provided in Attachment 1.

Sepulveda Canyon Continuous Flow Technical Memorandum

Table 2. 2021-2022 Storm Event Summary
Storm Start
Date
Storm End
Date
Total Rainfall
(inches)1
10/25/2021 10/25/2021 0.44
12/14/2021 12/14/2021 0.57
12/16/2021 12/17/2021 0.61
12/23/2021 12/24/2021 1.602
12/25/2021 12/25/2021 0.44
12/27/2021 12/27/2021 0.17
12/29/2021 12/30/2021 3.072
3/28/2022 3/29/2022 0.95

1. Los Angeles County Department of Public Works Rolling Hills rain gauge

2. Exceeds 85th percentile, 24-hour storm event rainfall depth Rolling Hills received a total of 6.60 inches of rainfall during December 2021, which included numerous rainfall events during the second half of the month. The cumulative rainfall and flow hydrograph are provided in Figure 5, which include two events with recorded flow on December 23-24, 2021 and December 29-30, 2021.

The first rainfall event that generated flow on December 23-24, 2021 was greater than the 85th percentile, 24-hour storm event rainfall depth of 1.0 inches. The total rainfall for the first 24 hours of the storm was 1.4 inches and the total rainfall for the event was 1.6 inches. The brief period of flow observed during the storm event commenced following 1.2 inches of rainfall within 24 hours, indicating Sepulveda Canyon retained the volume of flow generated up to and past the 85th percentile, 24-hour storm event. The month to date rainfall total for December at the onset of flow was 2.52 inches (Figure 5). Flow was observed for approximately three hours during the storm event and the total flow volume was approximately 75 cubic feet with a peak flow rate of 0.06 cfs. During the brief period of minimal flows, no inflection point was observed indicating there was likely no connectivity of flow from the entire Sepulveda Canyon drainage area. The onset of flow originated after the event was greater than the 85th percentile, 24-hour storm event and the flows likely originated from a small portion of the surrounding drainage area, rather than the entirety of Sepulveda Canyon. The cumulative rainfall and flow hydrograph are provided in Figure 6.

The second rainfall event that generated flow on December 29-30, 2021 was greater than the 85th percentile, 24-hour storm event rainfall depth of 1.0 inches and greater than the 95th percentile, 24-hour storm event rainfall depth of 2.0 inches. The total rainfall for the first 24 hours of the storm was 2.47 inches and the total rainfall for the 32 hour event was 3.07 inches. The first 24 hours of the storm event was calculated based on the rainfall observed from December 29, 2021 at 10:53 a.m. through December 30, 2021 at 10:53 a.m. The ten hours prior to December 29, 2021 at 10:53 a.m. received less than a tenth of an inch (0.03 inches). The onset of flow attributed to

Sepulveda Canyon Continuous Flow Technical Memorandum

the entire Sepulveda Canyon drainage area commenced following 1.59 inches of rainfall within 24 hours (Figure 7). An initial period of flow similar in magnitude to the flow observed the December 23-24, 2021 storm event was observed for approximately four hours. Based on the magnitude of initial flow rates observed, the first four hours of flow likely originated from a small portion of the surrounding drainage area, rather than the entirety of Sepulveda Canyon. The total volume of flow recorded in the first four hours prior to the storm event reached the 85th percentile, 24-hour storm event rainfall depth of 1.0 inches was approximately 400 cubic feet with a peak flow rate of 0.18 cfs. This volume represents 0.35 percent of the total storm event volume and indicates the canyon likely retained the volume of flow generated up to the 85th percentile, 24- hour storm event rainfall depth of 1.0 inches. Flows of similar magnitude continued for approximately three additional hours until the flow rates increased significantly when event rainfall total reached 1.59 inches, as indicated by the inflection point on the hydrograph (Figure 7). The total volume of flow recorded prior to inflection point (up to 1.59 inches of rainfall within 24 hours) was approximately 2,300 cubic feet with a peak flow rate of 0.37 cfs, which represents

2.0 percent of the total storm event volume. The month to date rainfall total for December at the time the storm flows increased significantly was 5.10 inches (Figure 5). The inflection point likely indicates the point at which the observed flows were due to connectivity from the entire Sepulveda Canyon drainage area. The total volume of the flow recorded following the inflection point at

1.59 inches of rainfall was approximately 115,000 cubic feet with a peak flow rate of 18.04 cfs, which can likely be attributed to the entire Sepulveda Canyon drainage area. Photographs are provided in Figure 4 and the cumulative rainfall and flow hydrograph are provided in Figure 7.

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 4. Continuous Flow Monitoring Location During 12/30/2021 Storm Event

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 5. Cumulative Rainfall and Flow Hydrograph for December 2021

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 6. Cumulative Rainfall and Flow Hydrograph December 23-24, 2021

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 7. Cumulative Rainfall and Flow Hydrograph December 29-30, 2021

Sepulveda Canyon Continuous Flow Technical Memorandum

HISTORICAL RAINFALL
A summary of the historical rainfall records for Rolling Hills between October 2016 through April 2022 are summarized in the following figures. Figure 8 provides a summary of all of the storm events greater than or equal to the 85th percentile, 24-hour storm event. A total of 17 storm events greater than or equal to the 85th percentile, 24-hour storm event have occurred near Sepulveda Canyon since October 2016 and the December 29-30, 2021 event had the second largest 24-hour rainfall total (2.47 inches). Figure 9 provides a summary of the monthly rainfall totals (OctoberApril) for each wet weather season. December 2021 was the wettest December and the third wettest month since October 2016 (over a six-year period).

Figure 8. Storm Events Exceeding 85th Percentile, 24-hour Storm from October 2016 through April 2022

Sepulveda Canyon Continuous Flow Technical Memorandum

Figure 9. Monthly Rainfall Totals from October 2016 through April 2022 October November December January February March April
2016-2017 0.69 1.51 2.89 7.47 5.27 0.05 0.04
2017-2018 0.11 0.52 0.06 1.20 0.71 2.34 0.21
2018-2019 0.60 1.30 1.73 7.38 4.90 2.71 0.08
2019-2020 0.03 1.37 3.01 0.58 0.56 3.29 2.94
2020-2021 0.00 0.10 1.21 1.69 0.00 1.39 0.00
2021-2022 0.56 0.04 6.60 0.01 0.08 1.03 0.10

0.00 1.00

2.00 3.00

4.00 5.00

6.00 7.00

8.00 Total Rainfall (inches)

Sepulveda Canyon Continuous Flow Technical Memorandum

CONCLUSIONS
Continuous flow monitoring was conducted in Sepulveda Canyon over the course of two wet weather seasons from October 26, 2020 through April 30, 2022 to determine if Sepulveda Canyon effectively retains the 85th percentile, 24-hour storm event. The results of the continuous flow monitoring data demonstrate that Sepulveda Canyon effectively retained all storm events from October 26, 2020 through April 30, 2022 that were less than or equal to the 85th percentile, 24- hour storm event. The following key takeaways are provided below:
• Sepulveda Canyon effectively retained the volume of flow generated by all storm events during the 2020-2021 wet season, including two storm events greater than the 85th percentile, 24-hour storm event.
• Sepulveda Canyon effectively retained the volume of flow generated by all storm events that occurred during the 2021-2022 wet season less than or equal to the 85th percentile, 24-hour storm event.
• A brief period of flow was observed during the December 23-24, 2021 storm event that was greater than the 85th percentile, 24-hour storm event rainfall depth of 1.0 inches. The onset of flow commenced following 1.2 inches of rainfall within 24 hours and the flows likely originated from a small portion of the surrounding drainage area, rather than the entirety of Sepulveda Canyon. The total rainfall for the first 24 hours of the storm was 1.4 inches and the total rainfall for the event was 1.6 inches. • Flow was observed during the December 29-30, 2021 storm event that was greater than the 85th percentile, 24-hour storm event rainfall depth of 1.0 inches and greater than the 95th percentile, 24-hour storm event rainfall depth of 2.0 inches. The onset of flow from the entire Sepulveda Canyon drainage area commenced following 1.59 inches of rainfall within 24 hours. The total rainfall for the first 24 hours of the storm was 2.47 inches and the total rainfall for the 32 hour event was 3.07 inches.

Please do not hesitate to contact me should you have any questions or concerns regarding this Sepulveda Canyon Rainfall and Flow Technical Memorandum.

For and on behalf of NV5,
Garth R. Engelhorn
Water Resources Sr. Consultant/Project Manager

Sepulveda Canyon Continuous Flow Technical Memorandum

Attachments
Attachment 1 – Continuous Flow Monitoring Data (Excel)
Funding for this study has been provided in full or in part from the Los Angeles County Flood Control District’s Safe, Clean Water Program.

Attachment 1
Continuous Flow Data (Excel)

Los Angeles Regional Water Quality Control Board
October 19, 2022 Via Email Only
Permittees of the Palos Verdes Peninsula Watershed Management Group1

APPROVAL, WITH CONDITIONS, OF THE PALOS VERDES PENINSULA

WATERSHED MANAGEMENT PROGRAM (WMP) PURSUANT TO THE REGIONAL MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4) WASTE DISCHARGE

REQUIREMENTS AND NATIONAL POLLUTANT DISCHARGE ELIMINATION

SYSTEM (NPDES) PERMIT FOR THE LOS ANGELES REGION (NPDES PERMIT NO. CAS004004; ORDER NO. R4-2021-0105)
Dear Palos Verdes Peninsula Watershed Management Group:

This letter (1) conditionally approves the Watershed Management Program (WMP) submitted by the Palos Verdes Peninsula Watershed Management Group (Group) subject to additional revisions of the WMP, (2) reviews compliance metrics for waterbody pollutant combinations (WBPCs) and (3) specifies additional requirements including requirements for an updated adaptive management process. 1) Review of Watershed Management Program
The Regional MS4 Permit (Order No. R4-2021-0105) authorizes discharges from the MS4 operated by 99 municipal Permittees within the coastal watersheds of Los Angeles and Ventura Counties (hereafter, Regional MS4 Permit or Order). The Regional MS4 Permit became effective on September 11, 2021. The Regional MS4 Permit allows the Permittee(s) the option to use a Watershed Management Program (WMP) to implement many of the permit's requirements through customized strategies, control measures, and best management practices (BMPs).

Pursuant to the State Water Resources Control Board (State Water Board) WQ Order No. 2020-0038 and the Los Angeles County MS4 Permit Order No. R4-2012-0175, the Group submitted to the Los Angeles Regional Water Quality Control Board (Los Angeles Water Board or Board) a revised draft WMP dated June 30, 2021. Because the Regional MS4 Permit carries over many of the provisions from Order No. R4-2012-0175 and incorporates the required elements of Order No. 2020-0038, and because it is the 1 Permittees of Palos Verdes Peninsula Watershed Management Group include Los Angeles County, Los Angeles County Flood Control District and the Cities of Palos Verdes Estates, Ranch Palos Verdes, Rolling Hills Estates, and Rolling Hills.

Palos Verdes Peninsula WMG - 2 - October 19, 2022
currently effective permit, the Los Angeles Water Board reviewed the WMP per Part IX of the Regional MS4 Permit.

Public Review and Comment
On December 21, 2021, the Los Angeles Water Board provided public notice and a 76- day period to allow for public review and comment on the WMPs submitted by June 30, 2021. The Board received one joint comment letter from Heal the Bay, the Los Angeles Waterkeeper, and the Natural Resources Defense Council, which generally applied to all WMPs. These comments were considered during staff’s review of the WMPs.

Conditions of Approval
Pursuant to Part IX.G.3.a of the Order, the Watershed Management Program and Reasonable Assurance Analysis (RAA) are required to be consistent with the requirements of the Regional MS4 Permit. On March 24, 2022, an email was sent to the Peninsula WMG with preliminary questions and concerns regarding the Peninsula WMP. On April 6, 2022, a second email was sent to the Group that provided additional comments and questions. Subsequently, Los Angeles Water Board staff met with the Peninsula WMG on April 11, 2022, to discuss the required revisions to the WMP. The Los Angeles Water Board received the Group’s second revised WMP dated May 13, 2022. The Los Angeles Water Board hereby approves the Group’s WMP, under the condition that the WMP is revised to address the following requirements:

1. The Board recognizes that the City of Rolling Hills intends to retain the runoff volume from the 85th percentile, 24-hour storm; however, the drainage areas within the City of Rolling Hills should still be identified. In Figure 1-1 on page 1-3 and in Figure 3-1 on page 3-10, shade the City of Rolling Hills jurisdictional area to show the watershed management area(s) to which it drains and include the streams to be consistent with the other jurisdictions’ watershed areas on the map.

2. In Section 1.3.1 on page 1-4, in the fourth paragraph, update the reference to the current 303(d) list to the 2020-2022 303(d) list of impaired waterbodies approved on May 11, 2022.

3. Remove footnote 16 from Section 2.2, Dominguez Channel page 2-3. The Los Angeles Water Board notes that per the Amended Consent Decree entered in United States v. Montrose Chemical Corp., Case No. 90-3122 AAH (JRx), the Los Angeles Water Board released some local agencies from liability for natural resource damages and for specific response costs related to releases of DDT and other hazardous substances from the Montrose DDT Plant. This Amended Consent Decree does not apply to all toxic pollutants covered by the Dominguez Channel Toxics TMDL. Further, nothing in the Amended Consent Decree bars the State from requiring compliance with the Clean Water Act, including compliance with NPDES permits issued thereunder. According to Attachment J of the Regional MS4 Permit, the Dominguez Channel and Greater Los Angeles and Long Beach Harbor Waters Toxic Pollutants TMDL, including the water quality-based effluent limits (WQBELs) in Attachment P, Part II of the Order, apply to the Group.

Palos Verdes Peninsula WMG - 3 - October 19, 2022

4. In Section 2.3.1 on page 2-30, update the second paragraph and Table 2-16 to include the land uses for the City of Rolling Hills.

5. In Section 2.3.2 on page 2-48, in the first sentence of the second paragraph delete the word “limited.”

6. Update the Torrance Airport Stormwater Basin Project Phase II BMP volume on Table 3-20: Summary of Modeled Regional BMPs, and update the WMP to be consistent with the most current volume and project details (including related figures).

7. In Table 4-22 on pages 4-4 and 4-5, replace the values in the two Bacteria (E. coli) rows for Analysis Regions WD-1 and WD-Solano with “n/a”. Update the second sentence of footnote 1 to say, “For WD-1 and WD-Solano, bacteria was originally modeled using an incorrect receiving water limitation. Therefore, it is not included in the table, since the 85th percentile, 24-hour storm volume is selected”.

Make this footnote edit again in Appendix 4.1 RAA Table 11 and update the entire WMP to be consistent with the footnote (e.g., edit the first bullet point on page 4.2- 2).

8. Add a new table to Section 4.2 that compares the target load reduction summaries in Table 4-21 and Table 4-22, and the management volumes in Table 4-23, with the summary of BMP volumes for modeled regional BMPs in Table 3-20, as well as any modeled volumes for distributed BMPs, to show how the RAA-recommended projects will meet the target load reductions for each subwatershed and city.

9. In Section 9, Adaptive Management Process, update the reference in number 1 of the list to refer to the Regional MS4 Permit and any other outdated references to the 2012 LA County MS4 Permit.

10. Correct internal referencing of tables and figures throughout the WMP. In many places the text references to table or figure numbers do not match the actual table or figure number. Additionally, for clarity, we would suggest either simple sequential numbering throughout the document, or numbering within each section.

The document seems to employ a hybrid approach. For example, Table 3-1 is labeled Table 3-20 and follows Table 2-19, and Figure 2-1 is labeled Figure 2-2 and follows Figure 1-1. These are just a few examples.

The Board may rescind this approval if any of the conditions in this letter are not met to the satisfaction of the Board within the timeframe provided below. Pursuant to Part IX.G.4 of the Order, if the necessary revisions are not appropriately made, the Group shall be subject to all requirements in the Order except those requirements pertaining to Watershed Management Programs upon disapproval by the Los Angeles Water Board.

The Peninsula WMG shall submit a final WMP to the Los Angeles Water Board that satisfies all of the above conditions no later than December 19, 2022. The final WMP must be submitted electronically by uploading the files in a Folder with the name of the Group to the FTP site using the following credentials:

FTP site: https://ftp.waterboards.ca.gov
Username: RB4MS4-Upload
Password: RB4-bmBb3Z

Palos Verdes Peninsula WMG - 4 - October 19, 2022
Pursuant to Parts IX.C.1 and IX.G.3.c of the Order, the Peninsula WMG shall implement their approved WMP immediately. The Group is subject to all applicable compliance schedules in Part IV.B and Attachments K through S of the Order.

Approval of the Group’s WMP, subject to the conditions above, reinstates the Group’s deemed compliance status, per the Board’s February 25, 2022 letter on the Group’s June 30, 2021 status of compliance demonstration, for the WBPCs identified in section 2.1.

To the extent allowed by law, it is not the intent of Board staff to take enforcement action resulting from the temporary loss of deemed compliance status for the WBPCs identified in section 2.1.2 below for the period of July 1, 2022 to the date of this conditional approval.
2) Compliance Determinations

2.1 Compliance Determination for WBPCs other than Trash

2.1.1 Compliance Metric: Pursuant to Part IX.B.7.h of the Order, the WMP is required to specify the expected volume capture, load reductions, or other compliance metric(s) at regular milestones, and the methods by which these reductions will be measured and demonstrated for each WBPC and supported via the RAA. Based on the information provided in the WMP, and pending revision of the WMP to address the conditions of this approval letter, the Board will determine deemed compliance with the Group’s WMP based on the following compliance metric(s) with the approved compliance schedule:
• The cities of Palos Verdes Estates, Rancho Palos Verdes, Rolling Hills Estates the County of Los Angeles (for the unincorporated areas within the Palos Verdes Peninsula WMP) and the Los Angeles County Flood Control District will comply with Table 4-23: Peninsula EWMP RAA Summary and Table 5-24: Structural TCM Implementation Schedule
These permittees must demonstrate compliance with final WQBELs and receiving water limitations through the direct demonstration of compliance options outlined in Part X.B.2.a of the Order or revise the WMP to include structural BMPs that retain all non-stormwater runoff and the volume of stormwater runoff from the 85th percentile 24-hour storm event.

Per Attachment P, Part IV.C.2, of the Order, the cities of Palos Verdes Estates, Rancho Palos Verdes, and Rolling Hills Estates did not receive approval to comply with alternative mass-based water quality-based effluent limitations for total nitrogen and total phosphorus allowed by the Machado Lake Nutrient TMDL.

Therefore, these Permittees shall comply with the final monthly average concentration-based water quality effluent limitations for total nitrogen and total phosphorus per Attachment P, Part IV.C.1.

Palos Verdes Peninsula WMG - 5 - October 19, 2022
The City of Rolling Hills will comply with the measures described in Section 3.5.2, 85th Percentile, 24-hour Runoff Retention Areas. The City shall continue to monitor flow in Sepulveda Canyon at the Middleridge Road crossing culvert to demonstrate that the 85th %, 24-hr storm event is retained.

2.1.2. WBPCs Eligible for Deemed Compliance Through Alternative Demonstration of Compliance: Based on the below criteria, the following WBPCs will receive deemed compliance up to the applicable final compliance deadline if the actions and schedules specified in the WMP are attained as outlined in Parts X.B.1.b and X.B.2.b of the Order and pending revision of the WMP to address the conditions of this approval letter:
• Wilmington Drain for E. coli indicator bacteria;
• Inner Los Angeles Harbor for copper, lead, zinc, total DDTs, total PAHs, and total PCBs; and
• Cabrillo Marina for copper, lead, zinc, total DDTs, total PAHs, and total PCBs. • In the City of Rolling Hills, only:
o Santa Monica Bay for total DDTs, total PCBs, arsenic, and mercury; o Santa Monica Bay Beaches for the indicator bacteria total coliform, fecal coliform and enterococcus, total DDTs, and total PCBs; and o Machado Lake for total nitrogen, total phosphorus, total DDTs, DDT (all congeners), DDE (all congeners), DDD (all congeners), total PCBs, total chlordane and dieldrin.

Any WBPCs that are not listed above are not eligible for deemed compliance for the following reasons: (a) for Category 1 WBPCs with interim deadlines, the WMP proposes watershed control measures for which there are no quantitative analysis that satisfy the RAA requirements, (b) the final TMDL deadline(s) have past and there is no approved Time Schedule Order (TSO) or retention of all non-stormwater runoff and the volume of stormwater runoff from the 85th percentile 24-hour storm event, (c) the WMP proposes implementing baseline Permit requirements only, and/or (d) the WMP does not propose implementing additional BMPs and proposes to demonstrate compliance though monitoring.

2.2 Compliance Determination for Trash WBPCs
Trash WBPCs are not eligible for deemed compliance under the WMP. For Trash WBPCs, compliance shall be determined as outlined in Part X.C of the Order. (3) Other Requirements
Adaptive Management
Pursuant to Part IX.E.1 of the Order, the Permittee(s) shall implement an adaptive management process for each approved WMP. An adaptive management process is a periodic, comprehensive program evaluation, including re-analysis of data and/or

Palos Verdes Peninsula WMG - 6 - October 19, 2022
modeling, and modification process to determine progress toward achieving WQBELs and receiving water limitations and to adapt the Watershed Management Program to become more effective at achieving WQBELs and receiving water limitations. Pursuant to Part IX.E.4 of the Order, Permittee(s) shall submit the results of the adaptive management process with the Permittees’ Report of Waste Discharge (ROWD) to the Los Angeles Water Board no later than March 15, 2026.

Per Part IX.E.3 of the Order, the adaptive management process fulfills the requirements in Part V.D of the Order to address continuing exceedances of receiving water limitations.

WMP Modifications
As indicated in Part IX.E.2 of the Order, based on the results of the adaptive management process, the Permittee(s) may propose WMP modifications necessary to improve the effectiveness of the WMP. The Permittee(s) shall clearly identify any WMP modification proposals in their submittal of the adaptive management results.

Additionally, per Part IX.C.2 of the Order, notwithstanding Part IX.E (Adaptive Management) of the Order, the Permittee(s) may propose WMP modifications at any time during the term of the Order, as necessary as a standalone request. As explained in Attachment H of the Order, the Permittee(s) cannot submit WMP modification requests as part of the Annual Report. The Permittee(s) shall provide separate written requests explaining the nature of the proposed modification and justification for consideration by the Los Angeles Water Board.

Receiving Water Limitations Compliance Report
Per Part IX.B.9.c.iv of the Order and Part XIV.C.4 in Attachment E of the Order, implementation of actions to address water quality priorities in a Watershed Management Program related to addressing exceedances of receiving water limitations in Part V (Receiving Water Limitations) of the Order which is not otherwise addressed by TMDLs in Part IV of the Order and Attachments K through S, fulfills the requirements in Part V.C of the Order to prepare a Receiving Water Limitations Compliance Report.

PROFESSIONAL SERVICES AGREEMENT
THIS AGREEMENT, made and entered into this 11th day of November, 2025 in City of Rolling Hills, County of Los Angeles, State of California, by and between the CITY OF ROLLING HILLS, a California municipal corporation (hereinafter the “CITY”), and NV5 Inc., a California limited partnership (hereinafter the “CONSULTANT”).

RECITALS:

A. The CITY desires to retain CONSULTANT to conduct Sepulveda Canyon Continuous Flow Monitoring for the 2025-2026 monitoring year. The objective of the continuous flow monitoring is to verify that Sepulveda Canyon effectively retains the 85th percentile, 24-hour storm event by collecting continuous flow measurements near the base of Sepulveda Canyon over the course of the monitoring year (the “Project”).

B. The CONSULTANT is well qualified by reason of education and experience to perform such services.

C. The CONSULTANT is willing to render such professional services.

Now, therefore, for and in consideration of the mutual covenants and conditions herein contained, CITY hereby engages CONSULTANT and CONSULTANT agrees to perform the services set forth in this Agreement.

1. SCOPE OF WORK
CONSULTANT shall perform all work necessary to complete in a manner satisfactory to CITY the services set forth in the scope of work attached hereto as Exhibit A and incorporated herein by reference. CONSULTANT shall provide deliverables pursuant to the schedule outlined in Exhibit A.

2. COST
The CITY agrees to pay CONSULTANT for the services required by this Agreement on a Time and Materials basis as set forth in Exhibit B, subject to a do not exceed amount in the amount of $16,240.00. This fee includes all expenses, consisting of travel, attendance at meetings, and miscellaneous costs.

It also includes any escalation or inflation factors anticipated. Any increase in Agreement amount or scope shall be by express written amendment approved by the CITY and CONSULTANT.

3. METHOD OF PAYMENT

CONSULTANT shall submit an invoice in duplicate and addressed to the CITY OF ROLLING HILLS, CITY MANAGER, 2 Portuguese Bend Road, Rolling Hills, CA 90274 before the end of each month on a monthly basis. CITY shall remit payment for all work performed to CITY’s reasonable satisfaction within thirty (30) days of receiving this invoice.

4. SUBCONTRACTING
CONSULTANT shall not be permitted to subcontract any portion of this Agreement without the express, written consent of the CITY.

5. COMMENCEMENT OF WORK
CONSULTANT shall commence work under this Agreement within twentyfour (24) hours upon receipt of a notice to proceed from the CITY.

6. ACCOUNTING RECORDS
CONSULTANT must maintain accounting records and other evidence pertaining to costs incurred. Records and documents shall be kept available at the CONSULTANT’s California office, located at 307 Amapola Avenue, Suite 212 Torrance, CA, 90501, during the Agreement period and thereafter for five years from the date of final payment.

7. OWNERSHIP OF DATA
All data, maps, photographs, and other material collected or prepared under the Agreement shall become the property of the CITY. CITY’s reuse of such materials for a purpose other than the project which is the subject of this Agreement shall be at CITY’s sole risk.

8. TERM OF CONTRACT
This Agreement shall be valid until December 31, 2026.

9. TERMINATION
This Agreement may be terminated by either party at any time for material breach. The CITY may also terminate unilaterally this Agreement without cause upon seven (7) days written notice to the CONSULTANT. All work satisfactorily performed to the reasonable satisfaction of CITY pursuant to the Agreement and prior to the date of termination may be claimed for reimbursement.

10. ASSIGNABILITY

CONSULTANT shall not assign or transfer any interest in this Agreement without the prior written consent of the CITY.

11. AMENDMENT
It is mutually understood and agreed that no alteration or variation of the terms of this Agreement, or any subcontract requiring the written approval of the CITY, shall be valid unless made in writing, signed by the parties hereto, and approved by all necessary parties.

12. NON-SOLICITATION CLAUSE
The CONSULTANT warrants that he or she has not employed or retained any company or persons, other than a bona fide employee working solely for the CONSULTANT, to obtain any fee, commission, percentage, brokerage fee, gifts, or any other consideration, contingent upon or resulting from the award or making of this Agreement. For breach or violation of this warranty, the CITY shall have the right to annul this Agreement without liability or, in its discretion, to deduct from the Agreement price or consideration, or otherwise recover, the full amount of such fee, commission, percentage, brokerage fee, gift, or contingent fee.

13. INDEMNITY
CONSULTANT shall indemnify, defend with counsel approved by CITY, and hold harmless CITY, its officers, officials, employees and volunteers from and against all liability, loss, damage, expense, cost (including without limitation reasonable attorneys fees, expert fees and all other costs and fees of litigation) of every nature arising out of or in connection with CONSULTANT’s performance of work hereunder or its failure to comply with any of its obligations contained in this Agreement, regardless of CITY’s passive negligence, but excepting such loss or damage which is caused by the sole active negligence or willful misconduct of the CITY. Should CITY in its sole discretion find CONSULTANT’s legal counsel unacceptable, then CONSULTANT shall reimburse the City its costs of defense, including without limitation reasonable attorney’s fees, expert fees and all other costs and fees of litigation. The CONSULTANT shall promptly pay any final judgment rendered against the CITY (and its officers, officials, employees and volunteers) covered by this indemnity obligation. It is expressly understood and agreed that the foregoing provisions are intended to be as broad and inclusive as is permitted by the law of the State of California and will survive termination of this Agreement.

14. INSURANCE
A. Without limiting CONSULTANT’S obligations arising under paragraph 13 - Indemnity, CONSULTANT shall not begin work under this

Agreement until it obtains policies of insurance required under this section. The insurance shall cover CONSULTANT, its agents, representatives, and employees in connection with the performance of work under this Agreement, and shall be maintained throughout the term of this Agreement. Insurance coverage shall be as follows:
i. Automobile Liability Insurance. CONSULTANT shall
maintain automobile insurance at least as broad as Insurance Services Office form CA 00 01 covering bodily injury and property damage for all activities of the CONSULTANT arising out of or in connection with work to be performed under this Agreement, including coverage for any owned, hired, non-owned, or rented vehicles, in an amount not less than $1,000,000 combined single limit for each accident.
ii. General Liability Insurance. CONSULTANT shall maintain commercial general liability insurance with coverage at least as broad as Insurance Services Office form CG 00 01, in an amount not less than $1,000,000 per occurrence, $2,000,000 general aggregate, for bodily injury, personal injury, and property damage. The policy must include contractual liability that has not been amended. Any endorsement restricting standard ISO “insured contract” language will not be accepted.
iii. Worker’s Compensation Insurance. CONSULTANT shall
maintain Workers’ Compensation Insurance (statutory limits) and Employer’s Liability insurance (with limits of at least $1,000,000). CONSULTANT shall submit to CITY, along with the certificate of insurance, a Waiver of Subrogation endorsement in favor of CITY, its officers, agents, employees, and volunteers.

This provision shall not apply if the CONSULTANT has no employees performing work under this Agreement. If the CONSULTANT has no employees for the purposes of this Agreement, the CONSULTANT shall sign the “Certificate of Exemption from Workers’ Compensation Insurance” which is attached hereto and incorporated herein by reference as “Exhibit C.”
iv. Professional Liability Coverage. CONSULTANT shall
maintain professional errors and omissions liability insurance for protection against claims alleging negligent acts, errors, or omissions which may arise from the CONSULTANT’s operations under this Agreement, whether such operations are by the CONSULTANT or by its employees, subcontractors, or subconsultants. The amount of this insurance shall not be less than one million dollars ($1,000,000) on a claims-made annual aggregate basis, or a combined single-limit-per-occurrence basis. When coverage is provided on a “claims made basis,” CONSULTANT will continue to renew the insurance for a period of three (3) years after this Agreement expires or is terminated. Such insurance will have the same coverage and limits as the policy that was in effect during the term of this Agreement, and will cover CONSULTANT for all claims made by CITY

arising out of any errors or omissions of CONSULTANT, or its officers, employees, or agents during the time this Agreement was in effect.

B. Additional Insured. General liability and automobile liability insurance policies shall provide or be endorsed to provide that CITY and its officers, officials, employees, agents, and volunteers shall be additional insureds under such policies.

C. Primary/noncontributing. Coverage provided by CONSULTANT shall be primary and any insurance or self-insurance procured or maintained by CITY shall not be required to contribute with it. The limits of insurance required herein may be satisfied by a combination of primary and umbrella or excess insurance. Any umbrella or excess insurance shall contain or be endorsed to contain a provision that such coverage shall also apply on a primary and noncontributory basis for the benefit of CITY before the CITY’s own insurance or self- insurance shall be called upon to protect it as a named insured.

D. Evidence of Insurance. CONSULTANT shall furnish CITY, prior to the execution of this Agreement, satisfactory evidence of the insurance required, issued by an insurer authorized to do business in California, and an endorsement to each such policy of insurance evidencing that each carrier is required to give CITY at least 30 days prior written notice of the cancellation of any policy during the effective period of the Agreement. All required insurance policies are subject to approval of the City Attorney. Failure on the part of CONSULTANT to procure or maintain said insurance in full force and effect shall constitute a material breach of this Agreement or procure or renew such insurance, and pay any premiums therefore at CONSULTANT’S expense.

E. Duration of coverage. CONSULTANT shall procure and maintain for the contract period, and any additional length of time required thereafter, insurance against claims for injuries to persons or damages to property, or financial loss which may arise from or in connection with the performance of the Work hereunder by CONSULTANT, their agents, representatives, employees, or subconsultants.

F. City’s right of enforcement. In the event any policy of insurance required under this Agreement does not comply with these specifications or is canceled and not replaced, CITY has the right but not the duty to obtain the insurance it deems necessary, and any premium paid by CITY will be promptly reimbursed by CONSULTANT or CITY will withhold amounts sufficient to pay premium from CONSULTANT payments. In the alternative, CITY may cancel this Agreement.

G. Acceptable insurers. All insurance policies shall be issued by an insurance company currently authorized by the Insurance Commissioner to transact business of insurance or is on the List of Approved Surplus Line Insurers

in the State of California, with an assigned policyholders’ Rating of A- (or higher) and Financial Size Category Class VII (or larger) in accordance with the latest edition of Best’s Key Rating Guide, unless otherwise approved by the CITY’s Risk Manager.

H. Waiver of subrogration. All insurance coverage maintained or procured pursuant to this Agreement shall be endorsed to waive subrogation against CITY, its elected or appointed officers, agents, officials, employees, and volunteers or shall specifically allow CONSULTANT or others providing insurance evidence in compliance with these specifications to waive their right of recovery prior to a loss. CONSULTANT hereby waives its own right of recovery against CITY and shall require similar written express waivers and insurance clauses from each of its subconsultants.

I. Enforcement of contract provisions (non-estoppel). CONSULTANT acknowledges and agrees that any actual or alleged failure on the part of the CITY to inform CONSULTANT of non-compliance with any requirement imposes no additional obligations on the CITY nor does it waive any rights hereunder.

J. Requirements not limiting. Requirements of specific coverage features or limits contained in this Section are not intended as a limitation on coverage, limits or other requirements, or a waiver of any coverage normally provided by any insurance. Specific reference to a given coverage feature is for purposes of clarification only as it pertains to a given issue and is not intended by any party or insured to be all inclusive, or to the exclusion of other coverage, or a waiver of any type. If the CONSULTANT maintains higher limits than the minimums shown above, the CITY requires and shall be entitled to coverage for the higher limits maintained by the CONSULTANT. Any available insurance proceeds in excess of the specified minimum limits of insurance and coverage shall be available to the CITY.

K. Prohibition of undisclosed coverage limitations. None of the coverages required herein will be in compliance with these requirements if they include any limiting endorsement of any kind that has not been first submitted to CITY and approved of in writing.

L. Separation of insureds. A severability of interests provision must apply for all additional insureds ensuring that CONSULTANT’s insurance shall apply separately to each insured against whom claim is made or suit is brought, except with respect to the insurer’s limits of liability. The policy(ies) shall not contain any cross-liability exclusions.

M. Pass through clause. CONSULTANT agrees to ensure that its subconsultants, subcontractors, and any other party who is brought onto or involved in the project/service by CONSULTANT (hereinafter collectively “Subcontractor”), provide the same minimum insurance coverage and

endorsements required of CONSULTANT under this Agreement. CONSULTANT agrees to monitor and review all such coverage and assumes all responsibility for ensuring that such coverage is provided in conformity with the requirements of this section. However, in the event CONSULTANT’s Subcontractor cannot comply with this requirement, which proof must be submitted to the CITY, CONSULTANT may still be able to utilize the Subcontractor provided CONSULTANT shall be required to ensure that its Subcontractor provide and maintain insurance coverage and endorsements sufficient to the specific risk of exposure involved with Subcontractor’s scope of work and services, with limits less than required of the CONSULTANT, but in all other terms consistent with the CONSULTANT’s requirements under this Agreement. This provision does not relieve the CONSULTANT of its contractual obligations under the Agreement and/or limit its liability to the amount of insurance coverage provided by its subcontractors. This provision is intended solely to provide CONSULTANT with the ability to utilize a Subcontractor who may be otherwise qualified to perform the work or services but may not carry the same insurance limits as required of the CONSULTANT under this Agreement given the limited scope of work or services provided by the subcontractor. CONSULTANT agrees that upon request, all agreements with Subcontractors, and others engaged in the project and/or services, will be submitted to CITY for review.

N. CITY’s right to revise specifications. The CITY reserves the right at any time during the term of the Agreement to change the amounts and types of insurance required by giving the CONSULTANT ninety (90) days advance written notice of such change. If such change results in substantial additional cost to the CONSULTANT, the CITY and CONSULTANT may renegotiate CONSULTANT’s compensation.

O. Self-insured retentions. Any self-insured retentions must be declared to and approved by CITY. CITY reserves the right to require that selfinsured retentions be eliminated, lowered, or replaced by a deductible, or require proof of ability to pay losses and related investigations, claim administration, and defense expenses within the retention through confirmation from the underwriter.

P. Timely notice of claims. CONSULTANT shall give CITY prompt and timely notice of claims made or suits instituted that arise out of or result from CONSULTANT’s performance under this Agreement, and that involve or may involve coverage under any of the required liability policies.

Q. Additional insurance. CONSULTANT shall also procure and maintain, at its own cost and expense, any additional kinds of insurance, which in its own judgment may be necessary for its proper protection and prosecution of the work.

15. NOTICE All Notices permitted or required under this Agreement shall be in writing, and shall be deemed made when delivered to the applicable party’s

representative as provided in this Agreement. Additionally, such notices may be given to the respective parties at the following addresses, or at such other addresses as the parties may provide in writing for this purpose.

Such notices shall be deemed made when personally delivered or when mailed forty-eight (48) hours after deposit in the U.S. mail, first-class postage prepaid, and addressed to the party at its applicable address.

CITY:

City of Rolling Hills
2 Portuguese Bend Road
Rolling Hills, California 90274.

Attention: City Manager, Karina Banales
CONSULTANT:

NV5 Inc.
370 Amapola Avenue, Suite 212
Torrance, California 90501
Attention: Garth Engelhorn

16. ENFORCEMENT OF AGREEMENT
In the event that legal action is commenced to enforce or declare the rights created under this Agreement, the prevailing party shall be entitled to an award of costs and reasonable attorney’s fees in the amount to be determined by the court.

17. CONFLICTS OF INTEREST
No member of the governing body of the CITY and no other officer, employee, or agent of the CITY who exercises any functions or responsibilities in connection with the planning and carrying out of the program, shall have any personal financial interest, direct or indirect, in this Agreement; and the CONSULTANT further covenants that in the performance of this Agreement, no person having any such interest shall be employed.

18. INDEPENDENT CONTRACTOR
The CONSULTANT is and shall at all times remain as to the CITY a wholly independent contractor. Neither the CITY nor any of its agents shall have control over the conduct of the CONSULTANT or any of the CONSULTANT’s employees, except as herein set forth. The CONSULTANT shall not at any time or in any manner represent that it or any of its agents or employees are in any manner agents or employees of the CITY.

19. ENTIRE AGREEMENT OF THE PARTIES

This Agreement supersedes any and all other agreements, either oral or in writing, between the parties hereto with respect to the employment of CONSULTANT by CITY and contains all the covenants and agreements between the parties with respect such employment in any manner whatsoever. Each party to this Agreement acknowledges that no representations, inducements, promises or agreements, orally or otherwise, have been made by any party, or anyone acting on behalf of any party, which are not embodied herein, and that no other agreement or amendment hereto shall be effective unless executed in writing and signed by both CITY and CONSULTANT.

20. GOVERNING LAW
This Agreement shall be governed by and construed in accordance with the laws of the State of California, and all applicable federal statutes and regulations as amended.
[SIGNATURES ON FOLLOWING PAGE]

EXHIBIT A

SCOPE OF WORK

1 EXHIBIT A: SCOPE OF WORK
NV5 will conduct the following tasks to implement Sepulveda Canyon Continuous Flow Monitoring during the 2025-2026 monitoring year. The objective of the continuous flow monitoring is to verify that Sepulveda Canyon effectively retains the 85th percentile, 24-hour storm event by collecting continuous flow measurements near the base of Sepulveda Canyon over the course of monitoring year.

Task 1: Project Management and Coordination
NV5 will routinely coordinate with the City to provide updates and discuss any potential modifications necessary for the continuous flow monitoring activities. This task includes planning and implementation of the project, relevant meeting attendance, coordination with the City, budget management, and monthly invoicing/reporting.

Task 2: 2025-2026 Flow Monitoring (8 months)
NV5’s proposed flow equipment includes an ultra-sonic sensor and data logger with near real-time access through NV5’s MS4 Flow System web portal. NV5’s proposed remote documentation equipment includes a field camera with cellular remote telemetry. The field camera will be used to document general site conditions and flow status remotely. The remote imagery will provide confirmation of presence or absence of leaf litter, sediment, ponded water, and flowing water at the monitoring location. The remotely imagery will provide additional confidence in the flow conditions. NV5 will install one flow monitoring unit and field camera and maintain the equipment in working order for the eight-month deployment period from approximately November 2025 through the end of June 2026.

The continuous flow monitoring equipment will be located in Sepulveda Canyon at the road crossing of Middleridge Road (33.773522, -118.348538), which is an accessible location near the bottom of the canyon suitable for flow monitoring. Sepulveda Canyon is located on the east side of the Palos Verdes Peninsula, south of N. Palos Verdes Drive, and about 0.5 miles east of Crenshaw Boulevard. During the installation, the storm drain dimensions and slope will be measured, and the flow equipment will be programmed to continuously log flow measurements at 5-minute intervals for the duration of the deployment period. Flow rates will be measured in accordance with the NPDES Storm Water Sampling Guidance Document (EPA833-B-92-001). The flow monitoring equipment will be maintained throughout the deployment to ensure functionality (site visits approximately every other month). NV5 will review the continuous flow data remotely to prevent data gaps through routine data evaluation, automated equipment alerts, and quick responses to resolve any issues.

Calibration of all monitoring equipment will be conducted immediately prior to deployment and periodic maintenance and calibration will be scheduled based site evaluations of the real-time data. All calibrations will be conducted in accordance with the manufacturer’s specifications and equipment will be calibrated on- site and field verified for accuracy with a level measurement tape. NV5 will conduct instantaneous flow measurements with a Flo-Mate meter twice per monitoring season to ensure accurate flow calculations are kept up to date and reflect any changes to the site conditions. A maintenance log form will be kept on file to detail the dates of instrument inspection, battery replacement, and any problems noted with instruments.

Upon completion of the deployment period, NV5 will remove all flow equipment.

NV5 will conduct routine quality assurance/quality control (QA/QC) of the flow data and calculations. NV5 will access the continuous flow data remotely to ensure the equipment is continuously monitoring, recording, and presenting accurate flow data on the web portal.

NV5 will provide the project staff with access to NV5 ’s MS4 Flow System web portal so that the site’s status can be reviewed in real-time from any web enabled device. The web portal generates site-specific reports to monitor flows on a daily evaluation and broken into weekly, and monthly totals. The project staff will have access to weekly data summaries including flow statistics and flow hydrographs in both Excel and Adobe Acrobat format from the web portal.

At the end of the deployment period, NV5 will provide the annual hydrologic assessment for the Sepulveda Canyon which include an analysis of the observed flow measurements compared to the observed rainfall to verify that Sepulveda Canyon effectively retains the 85th percentile. The deliverable will be provided in Excel format and include the general site observations, flow data, rainfall data, and an analysis of rainfall events and observed flow volumes. A compilation of all the site photos with date/time information will be provided in JPEG format. Following one round of comments, NV5 will prepare and submit a final hydrologic assessment.

Assumptions
• Access agreements may be necessary, but no encroachment permits will be required. • Traffic control plans will not be necessary. Standard traffic caution procedures will be used as-needed. • Any additional work required due to equipment vandalism or theft is not included in this scope of work.

References
USEPA (U.S Environmental Protection Agency), 1992. NPDES Storm Water Sampling Guidance Document. EPA 833-B-92-001. Office of Water, USEPA, Washington, DC. July 1992.

EXHIBIT B

FEE SCHEDULE

2 EXHIBIT B - COST ESTIMATE
NV5 has estimated the total cost to complete all tasks described in the scope of work below. The cost estimate summary for each task and total project cost is provided in Table 1. The detailed cost estimate worksheets including itemized labor costs and equipment costs for each task are provided in Table 2.

Table 1. Cost Estimate Summary
_____________
_________

Table 2. Detailed Cost Estimate

EXHIBIT C
Certificate of Exemption from Workers’ Compensation Insurance TO: City of Rolling Hills
SUBJECT: Sole Proprietor/Partnership/Closely Held Corporation with No Employees
Please let this memorandum notify the City of Rolling Hills that I am a sole proprietor
partnership
nonprofit organization
closely held corporation
and do not have any employees whose employment requires me to carry workers’ compensation insurance. Therefore, I do not carry worker’s compensation insurance coverage.

CONSULTANT Signature ____________________________
Printed Name of CONSULTANT ____________________________ Date

FIRST AMENDMENT TO

PROFESSIONAL SERVICES AGREEMENT

THIS FIRST AMENDMENT TO THE PROFESSIONAL SERVICES AGREEMENT (“First Amendment”) is made and entered into this 24th day of November, 2025, by and between the CITY OF ROLLING HILLS, a California municipal corporation (hereinafter the “CITY”), and NV5 Inc., a California limited partnership (hereinafter the “CONSULTANT”). CITY and CONSULTANT are sometimes referred to in this First Amendment individually as a “Party” and collectively as the “Parties.”

RECITALS
A. On November 11, 2025, CITY and CONSULTANT entered into that certain Professional Services Agreement to conduct Sepulveda Canyon Continuous Flow Monitoring for the 2025-2026 monitoring year for a not-to-exceed amount of $16,240.00 (the “Agreement”).

B. The Parties now desire to amend the Agreement in order to extend the term and scope of services to cover continuous flow monitoring services for the 2026-2027 and 2027- 2028 monitoring years and provide for additional compensation to CONSULTANT in the amount of $39,896.10 for the additional 2 years, for a total not-to-exceed amount of $56,136.10 for all 3 years (“First Amendment”).

Now, therefore, for and in consideration of the mutual covenants and conditions herein contained, CITY and CONSULTANT agree the following terms, as set forth in this First Amendment.

1. Section 1 “Scope of Work” of the Agreement is amended to read as follows:
“CONSULTANT shall perform all work necessary to complete in a manner satisfactory to CITY the services set forth in the scope of work attached hereto as Exhibit A and A-1 and incorporated herein by reference. CONSULTANT shall provide deliverables pursuant to the schedules outlined in Exhibit A and A-1.”

2. Section 2 “Cost” of the Agreement is amended to read as follows:
“The CITY agrees to pay CONSULTANT for the services required by this Agreement on a Time and Materials basis as set forth in Exhibit B and B-1, subject to a do not exceed amount in the amount of $56,136.10. This fee includes all expenses, consisting of travel, attendance at meetings, and miscellaneous costs. It also includes any escalation or inflation factors anticipated. Any increase in Agreement amount or scope shall be by express written amendment approved by the CITY and CONSULTANT.”

3. Section 8 “Term of Contract” of the Agreement is amended to read as follows:
“This Agreement shall be valid until December 31, 2028.”

4. Except as amended by this First Amendment, all provisions of the Agreement shall remain in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Amendment on the date and year first written above.

CITY OF ROLLING HILLS NV5 Inc.

CITY MANAGER SENIOR PROJECT MANAGER
__________________________ __________________________

KARINA BANALES GARTH ENGELHORN

ATTEST:
__________________________

CHRISTIAN HORVATH

CITY CLERK
APPROVED AS TO FORM:
__________________________

NICOLAS PAPAJOHN

CITY ATTORNEY

EXHIBIT A-1
SCOPE OF WORK FOR 2026-2027 AND 2027-2028 MONITORING YEARS

2 1 EXHIBIT A: SCOPE OF WORK
NV5 will conduct the following tasks to implement Sepulveda Canyon Continuous Flow Monitoring during the 2026-2027 and 2027-2028 monitoring years. The objective of the continuous flow monitoring is to verify that Sepulveda Canyon effectively retains the 85th percentile, 24-hour storm event by collecting continuous flow measurements near the base of Sepulveda Canyon over the course of two years.

Task 1: Project Management and Coordination
NV5 will routinely coordinate with the City to provide updates and discuss any potential modifications necessary for the continuous flow monitoring activities. This task includes planning and implementation of the project, relevant meeting attendance, coordination with the City, budget management, and monthly invoicing/reporting.

Task 2: 2026-2027 Flow Monitoring (12 months)
NV5’s proposed flow equipment includes an ultra-sonic sensor and data logger with near real-time access through NV5’s MS4 Flow System web portal. NV5’s proposed remote documentation equipment includes a field camera with cellular remote telemetry. The field camera will be used to document general site conditions and flow status remotely. The remote imagery will provide confirmation of presence or absence of leaf litter, sediment, ponded water, and flowing water at the monitoring location. The remotely imagery will provide additional confidence in the flow conditions. NV5 will maintain the equipment in working order for the twelve-month deployment period from July 2026 through the end of June 2027. The equipment will remain installed for the monitoring planned in Task 3.

At the end of the deployment period, NV5 will provide the annual hydrologic assessment for the Sepulveda Canyon which include an analysis of the observed flow measurements compared to the observed rainfall to verify that Sepulveda Canyon effectively retains the 85th percentile. The deliverable will be provided in Excel format and include the general site observations, flow data, rainfall data, and an analysis of rainfall events and observed flow volumes. A compilation of all the site photos with date/time information will be provided in JPEG format. Following one round of comments, NV5 will prepare and submit a final hydrologic assessment.

Task 3: 2027-2028 Flow Monitoring (12 months)
NV5’s proposed flow equipment includes an ultra-sonic sensor and data logger with near real-time access through NV5’s MS4 Flow System web portal. NV5’s proposed remote documentation equipment includes a field camera with cellular remote telemetry. The field camera will be used to document general site conditions and flow status remotely. The remote imagery will provide confirmation of presence or absence of leaf litter, sediment, ponded water, and flowing water at the monitoring location. The remotely imagery will provide additional confidence in the flow conditions. NV5 will maintain the equipment in working order for the twelve-month deployment period from July 2027 through the end of June 2028. The equipment will be removed following the completion of continuous flow monitoring in June 2028.

At the end of the deployment period, NV5 will provide the annual hydrologic assessment for the Sepulveda Canyon which include an analysis of the observed flow measurements compared to the observed rainfall to verify that Sepulveda Canyon effectively retains the 85th percentile. The deliverable will be provided in Excel format and include the general site observations, flow data, rainfall data, and an analysis of rainfall events and observed flow volumes. A compilation of all the site photos with date/time information will be provided in JPEG format. Following one round of comments, NV5 will prepare and submit a final hydrologic assessment.

Flow Monitoring Methodology for Tasks 2 and 3
The continuous flow monitoring equipment will be located in Sepulveda Canyon at the road crossing of Middleridge Road (33.773522, -118.348538), which is an accessible location near the bottom of the canyon suitable for flow monitoring. Sepulveda Canyon is located on the east side of the Palos Verdes Peninsula, south of N. Palos Verdes Drive, and about 0.5 miles east of Crenshaw Boulevard. During the installation,

3 the storm drain dimensions and slope will be measured, and the flow equipment will be programmed to continuously log flow measurements at 5-minute intervals for the duration of the deployment period. Flow rates will be measured in accordance with the NPDES Storm Water Sampling Guidance Document (EPA833-B-92-001). The flow monitoring equipment will be maintained throughout the deployment to ensure functionality (site visits approximately every other month). NV5 will review the continuous flow data remotely to prevent data gaps through routine data evaluation, automated equipment alerts, and quick responses to resolve any issues.

Calibration of all monitoring equipment will be conducted immediately prior to deployment and periodic maintenance and calibration will be scheduled based site evaluations of the real-time data. All calibrations will be conducted in accordance with the manufacturer’s specifications and equipment will be calibrated on- site and field verified for accuracy with a level measurement tape. NV5 will conduct instantaneous flow measurements with a Flo-Mate meter twice per monitoring season to ensure accurate flow calculations are kept up to date and reflect any changes to the site conditions. A maintenance log form will be kept on file to detail the dates of instrument inspection, battery replacement, and any problems noted with instruments.

Upon completion of the deployment period, NV5 will remove all flow equipment.

NV5 will conduct routine quality assurance/quality control (QA/QC) of the flow data and calculations. NV5 will access the continuous flow data remotely to ensure the equipment is continuously monitoring, recording, and presenting accurate flow data on the web portal.

NV5 will provide the project staff with access to NV5 ’s MS4 Flow System web portal so that the site’s status can be reviewed in real-time from any web enabled device. The web portal generates site-specific reports to monitor flows on a daily evaluation and broken into weekly, and monthly totals. The project staff will have access to weekly data summaries including flow statistics and flow hydrographs in both Excel and Adobe Acrobat format from the web portal.

Assumptions
• Access agreements may be necessary, but no encroachment permits will be required. • Traffic control plans will not be necessary. Standard traffic caution procedures will be used as-needed. • Any additional work required due to equipment vandalism or theft is not included in this scope of work.

References
USEPA (U.S Environmental Protection Agency), 1992. NPDES Storm Water Sampling Guidance Document. EPA 833-B-92-001. Office of Water, USEPA, Washington, DC. July 1992.

EXHIBIT B-1
FEE SCHEDULE FOR 2026-2027 AND 2027-2028 MONITORING YEARS

4 2 EXHIBIT B - COST ESTIMATE
NV5 has estimated the total cost to complete all tasks described in the scope of work below. The cost estimate summary for each task and total project cost is provided in Table 1. The detailed cost estimate worksheets including itemized labor costs and equipment costs for each task are provided in Table 2.

Table 1. Cost Estimate Summary

Table 2. Detailed Cost Estimate

Item Description
Estimated
cost for Line
Item
Cost to be
Recovered via
Measure W for
Ongoing Programs -
up to 30% of
planned
expenditures
Cost to be
Recovered via
Measure W for
New Projects or
Programs - at least
70% of planned
expenditures Source Explanation
1a
Peninsula Coordinated Integrated
Monitoring Program (CIMP) and
Harbor Toxics TMDL Monitoring
$ 70,000 $ 30,000.00
City's maximum cost under CIMP MOU Amendment 2 less 10% in new costs shown in Item 1b plus 58% of City's maximum cost under new cost-share for Harbor Toxics TMDL assuming 5 industrial facilities participate - all rounded up to nearest $1K.

CIMP monitoring and Harbor Toxins TMDL monitoring are ongoing efforts implemented prior to adoption of Measure W by the voters in November 2018. Ongoing monitoring costs are therefore limited to a maximum of 30% of the City's Safe Clean Water Expenditures in a given fiscal year. Allowable expenditure is calculated by applying the 30:70 (ongoing vs new effort) ratio against total expenditures in the 70% new effort column.
1b
CIMP Implementation of new 2021
MS4 Permit Requirements and Harbor
Toxics monitoring increased cost
due to TMDL revision
$ 14,000 $ 14,000.00
Allocation of new effort for CIMP from new requirements in 2021 Regional Stormwater Permit and revised Harbor Toxics TMDL.

Assumed 10% of City's CIMP costs and 42% of City's maximum cost under new cost-share for Harbor Toxics assuming 5 industrial facilities participate. Rounded up to nearest $1K.

New requirements in 2021 Stormwater Permit and revised Harbor Toxics TMDL can be considered new effort in the 70% category since they were not required prior to November 2018. 2 Sepulveda Canyon Monitoring Study $ 25,000 $ 25,000.00 Estimated based on NV5 FY24-25 YTD expenditures plus additional funding request
Sepulveda Canyon monitoring is newly required by LA Water Board as a condition of City joining the Peninsula WMP via 85%, 24-hr runoff retention deemed compliance. Since this is a new effort not required prior to November 2018, it is in the 70% new effort category. 3 Enhanced Sediment Source Control &
Brush Clearance Enforcement $ 6,000 $ 6,000.00
10% of contract code enforcement cost for additional oversight of construction sites and brush clearance ordinance - same as allocated for FY23-24
New effort implemented after November 2018 to address storm-borne sediment TMDL pollutants associated with insufficiently controlled construction sites and brush clearance to prevent wildfires and associated TMDL toxic pollutants.
4 SCW Municipal Program Planning and
Reporting $ 10,000 $ 10,000.00 McGowan Task 2.2 - Consultant assistance with SCW planning and reporting Eligible in the 70% category as a new effort since it is required by the SCW program. 5 Watershed Management Program
Adaptive Management & Progress
Reporting
$ 6,000.00 $ 6,000.00 McGowan estimate for Task 8.1. & 8.3 City's participation in watershed progress reporting and watershed management program as a result of joining the Peninsula EWMP is a new effort since November 2018 implemented to comply with the 2021 Stormwater Permit and joining the WMP. 6 Development & Implementation of
Community Outreach/Engagement $ 7,400.00 $ 7,400.00
McGowan estimate for Task 8.2 and 2.1 plus Other Direct Costs invoiced by McGowan for website hosting by SBCCOG and graphic design services.

Effort to develop new outreach materials and methods and tracking of metrics on outreach and engagement as required by 2021 Stormwater Permit.
$ 30,000.00 $ 68,400.00 $ 98,400.00 Check: total planned expenditures are less than estimated total SCW Municipal funds available to spend as shown below.
$ 18,935.40 Uncertain depending on how next 5 months expenditures come in $ 100,000.00
Note that SCW website references prior fiscal year because it is the year they collect the taxes even though not disbursed to City until midway through the following year.

Total SCW Municipal Funds Available to Spend less 10% for safety factor $ 107,041.86 PLANNED EXPENDITURES FOR FY2025-2026 SAFE CLEAN WATER MUNICIPAL PROGRAM (Measure W) Estimated carryover of unspent funds from previous years Measure W estimated disbursement to be received in December 2025 from LACFCD Expenditures

Item: 11.A.

Meeting Date: 11/24/2025
To: City Council
From: Nicolas Papajohn, City Attorney
Thru: Karina Bañales, City Manager
Subject: Consideration of an Ordinance of the City Council of the City of Rolling Hills amending Chapter 17.28 of the Rolling Hills Municipal Code relating to Accessory Dwelling Units and Junior Accessory Dwelling Units and finding the action to be statutorily exempt from CEQA under Public Resources Code § 21080.17 Background:

The proposed ordinance will amend Chapter 17.28 of the Rolling Hills Municipal Code to comply with recent changes to state law that impose new limits on local authority to regulate Accessory Dwelling Units (ADUs) and Junior Accessory Dwelling Units (JADUs). Except as otherwise noted, these new laws take effect on January 1, 2026.

BACKGROUND AND ANALYSIS:

In recent years, the California Legislature has approved, and the Governor has signed into law, a number of bills that impose new limits on local authority to regulate ADUs and JADUs. In late 2025, four new bills were enacted that further amend state ADU law as summarized below.

AB 462 – Coastal Development Permits; Disaster-Affected Areas AB 462 modifies several permitting requirements associated with processing Coastal Development Permits for ADUs located in the Coastal Zone.

Beyond changes to CDP processing, AB 462 modifies the rules governing the issuance of a certificate of occupancy (CofO) for an ADU. Historically, state law has prohibited a local agency from issuing a CofO for an ADU before one is issued for the primary dwelling (i.e., the primary dwelling must have a CofO before the ADU can receive one).

AB 462 creates a narrow exception to this prohibition for detached ADUs when all of the following conditions are satisfied: (1) the Governor has declared a state of emergency for the county on or after February 1, 2025; (2) the primary dwelling was substantially damaged or destroyed by an event referenced in the state of emergency proclamation; and (3) the ADU has been issued construction permits and passed all required inspections. (Gov. Code, § 66328(b).) If these conditions are satisfied, the detached ADU can receive a CofO before the primary dwelling. In all other scenarios, the primary dwelling still needs a CofO before one can be issued for an ADU.

AB 462 was enacted as an urgency measure that took effect immediately when signed by the Governor (on October 10, 2025).

The following three bills were enacted as non-urgency measures and take effect on January 1, 2026.

AB 1154 – JADU Owner-Occupancy; Short-Term Rental
When a JADU is developed, existing state law requires a property owner to reside in the JADU or remaining portion of the single-family dwelling. AB 1154 narrows this requirement to now only apply when a JADU shares sanitation facilities (bathroom) with the single-family dwelling. If the JADU has its own bathroom, then the property owner does not have to reside on the property at all. (See amended Gov. Code, § 66333(b).)
AB 1154 also expressly prohibits JADUs from being used as short-term rentals (i.e., rented for a term shorter than 30 days). (See amended Gov. Code, § 66333(g).) The City’s ADU ordinance already included this prohibition (as well as prohibiting ADUs from being used as short-term rentals). But now it’s required by state law.

SB 9; SB 543 – Ordinance Submittal to HCD; Approval
Under existing law, local agencies are required to submit a copy of their ADU ordinance to the California Department of Housing and Community Development (HCD) within 60 days of adoption.

This year’s SB 9 and SB 543 create a penalty for failing to do so by rendering null and void any local ordinance that is not submitted to HCD within 60 days of adoption. (See amended Gov. Code, § 66326(d); new Gov. Code, § 66333.5(d).) The bills further specify that a local ADU ordinance is null and void if HCD issues findings that the ordinance does not comply with state law and the local agency fails to respond to HCD within 30 days. (Id.)
SB 543 – ADU Size; Number of ADUs; Impact Fees; Application Timeline SB 543 makes numerous changes and clarifications to state ADU law, the most notable of which are summarized below.

ADU & JADU Size
Existing law limits the maximum size of a JADU to 500 square feet and prohibits local ADU ordinances from imposing certain development standards that would prevent an ADU created under Government Code section 66314 through 66322 from being at least 800 square feet.

SB 543 amends state ADU law to specify that allowable square footage of an ADU or JADU refers to square footage of “interior livable space.” (See amended Gov. Code, § 66313(d), 66321(b)(2).) Impact Fees
Existing law exempts ADUS that are 750 square feet or smaller from development impacts fees (DIFs).

SB 543 clarifies that DIFs may not be imposed on an ADU that has 750 or fewer square feet of interior livable space or on a JADU with 500 or fewer square feet of interior livable space.

The bill also exempts an ADU or JADU with less than 500 square feet of interior livable space from school impact fees. (See amended Gov. Code, § 66311.5.) Quantity of ADUs Created Under Government Code Section 66323 Existing state law creates four categories of ADUs that must be approved if they comply with the

limited standards provided in Government Code section 66323(a)(1)–(4). These are:

1. A converted ADU and JADU created on a lot with a proposed or existing single-family dwelling (Gov. Code, § 66323(a)(1));

2. A detached ADU created on a lot with a proposed or existing single-family dwelling (Gov.

Code, § 66323(a)(2));

3. Converted ADUs created in an existing multifamily dwelling (Gov. Code, § 66323(a)(3)); and

4. Detached ADUs created on a lot with a proposed or existing multifamily dwelling.

For some time, there has been uncertainty as to whether ADUs created under Government Code section 66323 could be combined. Some practitioners interpreted the statute to not require local agencies to allow combinations. Initially, HCD took the same position, in its 2020 ADU Handbook. But for the last few years, HCD has taken the opposite position: that yes, combinations are permitted. (See HCD January 2025 ADU Handbook, at p. 19 [“[P]ursuant to Government Code section 66323, subdivision (a), local governments must allow units created pursuant to subparagraphs (1) and (2) together or (3) and (4) together”].)
SB 543 codifies HCD’s most recent interpretation by amending Government Code section 66323 to specifically allow combinations. Thus, a lot with a multifamily dwelling can now have a converted ADU or ADUs created under section 66323(a)(3) and detached ADUs created under section 66323(a)(4).

And a lot with a single family dwelling can now have a converted ADU and a JADU created under section 66323(a)(1) and a detached ADU created under section 66323(a)(2).

ADU Permitting Process
Existing law has long required local agencies to approve or deny an ADU application within 60 days of receiving a complete application. However, state law was silent with respect to incompleteness determinations, subsequent resubmittals, and appealing local decisions on ADU applications.

SB 543 requires local agencies to now:

1. Determine whether an ADU application is complete within 15 business days of submittal;

2. If the application is if incomplete, within the same 15 days provide the applicant with a list of incomplete items and how to address them;

3. Review a resubmitted application for completeness within 15 business days;

4. Provide the applicant with a written appeal process for any incompleteness determination or denial (to the Planning Commission or City Council, or both); and

5. Provide a final written determination on the appeal within 60 business days of receiving the appeal). (See amended Gov. Code, §§ 66317 [ADUs], 66335 [JADUs].) Discussion:

AB 462 took effect immediately when signed, but technically it doesn’t require any change to a local ADU ordinance; the City just needs to follow the new rules for CDP processing and issuance of a CofO, if applicable. But the remaining bills take effect January 1, 2026, and for the City’s ADU ordinance to remain valid and enforceable, it must comply with the new changes in state law. Adopting the proposed ordinance ensures that the City’s ADU ordinance will remain in compliance with state law.

On November 18, 2025, the Planning Commission held a public hearing to consider the proposed ordinance, and thereafter voted to forward the ordinance to the City Council with a recommendation in favor of its adoption. Staff recommends that the City Council proceed in accordance with the recommended actions set forth above.

ENVIRONMENTAL REVIEW

Under California Public Resources Code section 21080.17, CEQA does not apply to the adoption of an ordinance by a city or county implementing the provisions of Chapter 13 of Division 1 of Title 7 of the California Government Code, which is California’s ADU law. Therefore, the proposed ordinance is statutorily exempt from CEQA in that the proposed ordinance implements state ADU law.

Fiscal Impact:

Recommendation:

1. Open the public hearing, receive public testimony, close the public hearing, and by motion:

A. Find that the adoption of the proposed ordinance is statutorily exempt from review under the California Environmental Quality Act (CEQA) under Public Resources Code § 21080.17.

B. Waive full reading and introduce for first reading by title only an ordinance entitled: “AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF ROLLING HILLS AMENDING CHAPTER 17.28 OF THE

ROLLING HILLS MUNICIPAL CODE RELATING TO ACCESSORY DWELLING UNITS AND

JUNIOR ACCESSORY DWELLING UNITS AND FINDING THE ACTION TO BE STATUTORILY EXEMPT FROM CEQA UNDER PUBLIC RESOURCES CODE § 21080.17.” Attachments:

1. 2025-11_PC_Resolution_ADU_OrdinanceAmendments_F_E

2. 388_ADU_2025_Ordinance_ExhibitB_Redline

65277.00001\44385023.1 -1-
RESOLUTION NO. 2025-11

A RESOLUTION OF THE PLANNING COMMISSION OF

THE CITY OF ROLLING HILLS, RECOMMENDING THAT

THE CITY COUNCIL ADOPT AN ORDINANCE AMENDING
CHAPTER 17.28 OF THE ROLLING HILLS MUNICIPAL

CODE RELATING TO ACCESSORY DWELLING UNITS

AND JUNIOR ACCESSORY DWELLING UNITS, AND

FINDING THE ACTION TO BE STATUTORILY EXEMPT

FROM CEQA UNDER PUBLIC RESOURCES CODE
§ 21080.17
WHEREAS, state law authorizes cities to act by ordinance to provide for the creation and regulation of accessory dwelling units (“ADUs”) and junior accessory dwelling units (“JADUs”); and
WHEREAS, in recent years, the California Legislature has approved, and the Governor has signed into law, a number of bills that, among other things, amend various sections of the Government Code to impose new limits on local authority to regulate ADUs and JADUs; and
WHEREAS, in 2025, the California Legislature approved, and the Governor signed into law, further amendments to state ADU law;
WHEREAS, new updates to state ADU law take effect on January 1, 2026, and for the City’s ADU ordinance to remain valid, it must be amended to reflect the most recent changes to state law; and
WHEREAS, the City desires to amend its local regulatory scheme for the construction of ADUs and JADUs to reflect the most recent changes to state law; and WHEREAS, on November 18, 2025, the Planning Commission held a duly-noticed public hearing to consider the attached Ordinance; and
WHEREAS, all legal prerequisites to the adoption of this Resolution have occurred.

THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS DOES HEREBY FIND, RESOLVE, AND ORDER AS FOLLOWS:

SECTION 1. Incorporation. The recitals above are true and correct and are each incorporated by reference and adopted as findings by the Planning Commission.

65277.00001\44385023.1 -4-
Exhibit “A”
Proposed Ordinance
[Attached]

Ordinance No. 388 ADU Amendments
- 1 -
ORDINANCE NO. 388

AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF
ROLLING HILLS AMENDING CHAPTER 17.28 OF THE

ROLLING HILLS MUNICIPAL CODE RELATING TO

ACCESSORY DWELLING UNITS AND JUNIOR

ACCESSORY DWELLING UNITS AND FINDING THE

ACTION TO BE STATUTORILY EXEMPT FROM CEQA
UNDER PUBLIC RESOURCES CODE § 21080.17
WHEREAS, the City of Rolling Hills, California (“City”) is a municipal corporation, duly organized under the constitution and laws of the State of California; and WHEREAS, state law authorizes cities to act by ordinance to provide for the creation and regulation of accessory dwelling units (“ADUs”) and junior accessory dwelling units (“JADUs”); and
WHEREAS, in recent years, the California Legislature has approved, and the Governor has signed into law, numerous bills that, among other things, amend various sections of the Government Code to impose new limits on local authority to regulate ADUs and JADUs; and
WHEREAS, in 2025, the California Legislature approved, and the Governor signed into law, further amendments to state ADU law; and
WHEREAS, new updates to state ADU law take effect on January 1, 2026, and for the City’s ADU ordinance to remain valid, it must be amended to reflect the most recent changes to state law; and
WHEREAS, the City desires to amend its local regulatory scheme for the construction of ADUs and JADUs to reflect the most recent changes to state law; and WHEREAS, on November 18, 2025, the Planning Commission held a duly-noticed public hearing and considered the staff report, recommendations by staff, and public testimony concerning this proposed Ordinance. Following the public hearing, the Planning Commission voted to forward the Ordinance to the City Council with a recommendation in favor of its adoption; and
WHEREAS, on November 24, 2025, the City Council held a duly-noticed public hearing to consider the Ordinance, including: (1) the public testimony and agenda reports prepared in connection with the Ordinance, (2) the policy considerations discussed therein, and (3) the consideration and recommendation by the City’s Planning Commission; and
WHEREAS, all legal prerequisites to the adoption of the Ordinance have occurred.

NOW, THEREFORE, the City Council of the City of Rolling Hills does ordain as follows:

Ordinance No. 388 ADU Amendments
- 2 -
SECTION 1. Incorporation. The recitals above are each incorporated by reference and adopted as findings by the City Council.

SECTION 2. CEQA. Under California Public Resources Code section 21080.17, the California Environmental Quality Act (“CEQA”) does not apply to the adoption of an ordinance by a city or county implementing the provisions of Chapter 13 of Division 1 of Title 7 of the California Government Code, which is California’s ADU law. Therefore, adoption of the Ordinance is statutorily exempt from CEQA in that it implements state ADU law.

SECTION 3. General Plan. The City Council hereby finds that the adoption of the Ordinance is consistent with the General Plan as a matter of law under Government Code section 66314(c).

SECTION 4. Code Amendment. Chapter 17.28 of the Rolling Hills Municipal Code is hereby amended and restated to read in its entirety as provided in Exhibit “A,” attached hereto and incorporated herein by reference.

SECTION 5. Effective Date. This Ordinance takes effect 30 days after its adoption.

SECTION 6. HCD Submittal. In accordance with Government Code sections 66326 and 66333.5, the City Clerk is directed to submit a copy of this Ordinance to the California Department of Housing and Community Development within 60 days after adoption.

SECTION 7. Publication. The City Clerk is directed to certify to the adoption of this Ordinance and post or publish this Ordinance as required by law.

SECTION 8. Custodian of Records. The custodian of records for this Ordinance is the City Clerk and the records comprising the administrative record are located at Rolling Hills City Hall, 2 Portuguese Bend Road, Rolling Hills, California 90274.

SECTION 9. Severability. If any provision of this Ordinance or its application to any person or circumstance is held to be invalid by a court of competent jurisdiction, such invalidity has no effect on the other provisions or applications of the Ordinance that can be given effect without the invalid provision or application, and to this extent, the provisions of this Ordinance are severable. The City Council declares that it would have adopted this Ordinance irrespective of the invalidity of any portion thereof. (Continues on next page)

Ordinance No. 388 ADU Amendments
- 3 -
PASSED, APPROVED and ADOPTED this 9th day of December, 2025. ____________________________
Jeff Pieper, Mayor
ATTEST:
______________________________
Christian Horvath, City Clerk
APPROVED AS TO FORM:

BEST BEST & KRIEGER LLP
________________________________
Nicolas Papajohn, City Attorney

Ordinance No. 388 ADU Amendments
- 4 -
EXHIBIT A-1
Amended ADU Regulations
(follows this page)

Ordinance No. 388 ADU Amendments
- 5 -
EXHIBIT “A”
Chapter 17.28

ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY DWELLING UNITS Sections:

17.28.010 Purpose.

The purpose of this Chapter is to allow and regulate accessory dwelling units (ADUs) and junior accessory dwelling units (JADUs) in compliance with Chapter 13 of Division 1 of Title 7 of the California Government Code.

17.28.020 Effect of conforming.

An ADU or JADU that conforms to the standards in this Chapter will not be:

A. Deemed to be inconsistent with the City's general plan and zoning designation for the lot on which the ADU or JADU is located.

B. Deemed to exceed the allowable density for the lot on which the ADU or JADU is located.

C. Considered in the application of any local ordinance, policy, or program to limit residential growth.

D. Required to correct a nonconforming zoning condition, as defined in subsection 17.28.030(H) below. This does not prevent the City from enforcing compliance with applicable building standards in accordance with Health and Safety Code Section 17980.12.

17.28.030 Definitions.

As used in this Chapter, terms are defined as follows:

A. "Accessory dwelling unit" or "ADU" means an attached or a detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. An accessory dwelling unit also includes the following:

1. An efficiency unit, as defined by Section 17958.1 of the California Health and Safety Code; and

2. A manufactured home, as defined by Section 18007 of the California Health and Safety Code.

B. "Accessory structure" means a structure that is accessory and incidental to a dwelling located on the same lot.

C. "Complete independent living facilities" means permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family or multifamily dwelling is or will be situated.

D. "Efficiency kitchen" means a kitchen that includes all of the following:

1. A cooking facility with appliances.

2. A food preparation counter and storage cabinets that are of a reasonable size in relation to the size of the JADU.

E. "Junior accessory dwelling unit" or "JADU" means a residential unit that satisfies all of the following:

1. It is no more than 500 square feet of interior livable space in size.

Ordinance No. 388 ADU Amendments
- 6 -

2. It is contained entirely within an existing or proposed single-family structure. An enclosed use within the residence, such as an attached garage, is considered to be a part of and contained within the single-family structure.

3. It includes its own separate sanitation facilities or shares sanitation facilities with the existing or proposed single-family structure.

4. If the unit does not include its own separate bathroom, then it contains an interior entrance to the main living area of the existing or proposed single-family structure in addition to an exterior entrance that is separate from the main entrance to the primary dwelling.

5. It includes an efficiency kitchen, as defined in subsection (D) above.

F. "Livable space" means a space in a dwelling intended for human habitation, including living, sleeping, eating, cooking, or sanitation.

G. "Living area" means the interior habitable area of a dwelling unit, including basements and attics, but does not include a garage or any accessory structure.

H. "Nonconforming zoning condition" means a physical improvement on a property that does not conform with current zoning standards.

I. "Passageway" means a pathway that is unobstructed clear to the sky and extends from a street to one entrance of the ADU or JADU.

J. "Proposed dwelling" means a dwelling that is the subject of a permit application and that meets the requirements for permitting.

K. "Public transit" means a location, including, but not limited to, a bus stop or train station, where the public may access buses, trains, subways, and other forms of transportation that charge set fares, run on fixed routes, and are available to the public.

L. "Tandem parking" means that two or more automobiles are parked on a driveway or in any other location on a lot, lined up behind one another.

17.28.040 Approvals.

A. The following approvals apply to ADUs and JADUs created under this Chapter:

1. Ministerial ADU and Building Permits Required. Every ADU and JADU requires an ADU permit and a building permit. The City will review and approve permit applications in accordance with subsection (A)(3) below.

2. Processing Fee. The City may charge a fee to reimburse it for costs incurred in processing ADU permits, including the costs of adopting or amending the City’s ADU ordinance. The ADU-permit processing fee is determined by the Director of Community Development or other City employee as determined or designated by the City Manager and approved by the City Council by resolution.

3. Process and Timing.
(a) Completeness.
(i) Determination in 15 days. The City will determine whether an application to create or serve an ADU or JADU is complete and will provide written notice of the determination to the applicant within 15 business days after the City receives the application submittal. (ii) Incomplete items. If the City’s determination under subsection (A)(3)(a)(i) above is that the application is incomplete, the City’s notice must list the incomplete items and describe how the application can be made complete.

Ordinance No. 388 ADU Amendments
- 7 -
(iii) Cure. After receiving a notice that the application is incomplete, the applicant may cure and address the items that were deemed by the City to be incomplete. (iv) Subsequent submittals. If the applicant submits additional information to address incomplete items, within 15 business days of the subsequent submittal the City will determine in writing whether the additional information remedies all the incomplete items that the City identified in its original notice. The City may not require the application to include an item that was not included in the original notice. (v) Deemed complete. If the City does not make a timely determination as required by this subsection (a), the application or resubmitted application is deemed complete for the purposes of subsection (A)(3)(c) below.
(vi) Appeal of incompleteness. An applicant may appeal the City’s determination that the application is incomplete by submitting a written appeal to the City Clerk. The Planning Commission will review the written appeal and affirm or reverse the completeness determination and provide a final written determination to the applicant within 60 business days after receipt of the appeal.
(b) No discretion or hearing. Ministerial permits for an ADU or JADU are considered and approved without discretionary review or a hearing.
(c) Deadline to approval or deny ministerial approvals. The City must approve or deny an application to create an ADU or JADU within 60 days from the date that the City receives a complete application. If the City has not approved or denied the complete application within 60 days, the application is deemed approved unless either:
(i) The applicant requests a delay, in which case the 60-day time period is tolled for the period of the requested delay, or
(ii) When an application to create an ADU or JADU is submitted with a permit application to create a new single-family or multifamily dwelling on the lot, the City may delay acting on the permit application for the ADU or JADU until the City acts on the permit application to create the new single-family or multifamily dwelling, but the application to create the ADU or JADU will still be considered ministerially without discretionary review or a hearing. (d) Denial. If the City denies an application to create an ADU or JADU, the City must provide the applicant with comments that include, among other things, a list of all the defective or deficient items and a description of how the application may be remedied by the applicant. Notice of the denial and corresponding comments must be provided to the applicant within the 60-day time period established by subsection (A)(3)(c) above.
(e) Appeal of denial. An applicant may appeal the City’s denial of the application by submitting a written appeal to the City Clerk. The Planning Commission will review the written appeal and affirm or reverse the denial and provide a final written determination to the applicant within 60 business days after receipt of the appeal.
(f) Concurrent review of demolition. A demolition permit for a detached garage that is to be replaced with an ADU is reviewed with the application for the ADU and issued at the same time.

B. Classes.

1. Class 1: Statutorily Regulated. Class 1 ADUs and JADUs are approved under Government Code Section 66323. If an ADU or JADU complies with each of the general requirements in Section 17.28.050, it is allowed in each of the scenarios provided in this subsection (B)(1). An ADU and JADU approved under subsection (B)(1)(a) may be combined with an ADU approved under subsection (B)(1)(b), and ADUs approved under subsection (B)(1)(c) may be combined with ADUs approved under subsection (B)(1)(d).

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(a) Converted on Lot with Single-Family: One ADU as described in this subsection (B)(1)(a) and one JADU on a lot with a proposed or existing single-family dwelling on it, where the ADU or JADU:
(i) Is either: within the space of a proposed single-family dwelling; within the existing space of an existing single-family dwelling; or (in the case of an ADU only) within the existing space of an accessory structure, plus up to 150 additional square feet if the expansion is limited to accommodating ingress and egress; and
(ii) Has exterior access that is independent of that for the single-family dwelling; and (iii) Has side and rear setbacks sufficient for fire and safety, as dictated by applicable building and fire codes.
(iv) The JADU complies with the requirements of Government Code Sections 66333 through 66339.
(b) Limited Detached Lot with Single-Family: One detached, new-construction ADU on a lot with a proposed or existing single-family dwelling, if the detached ADU satisfies each of the following limitations:
(i) The side- and rear-yard setbacks are at least four feet. (ii) The total floor area is 800 square feet of livable space or smaller. (iii) The peak height above grade does not exceed the applicable height limit in subsection

17.28.050(B) below.
(c) Converted on Lot with Multifamily: One or more ADUs within portions of existing multifamily dwelling structures that are not used as livable space, including but not limited to storage rooms, boiler rooms, passageways, attics, basements, or garages, if each converted ADU complies with state building standards for dwellings. Under this subsection (B)(1)(c), at least one converted ADU is allowed within an existing multifamily dwelling, up to a quantity equal to twenty-five percent of the existing multifamily dwelling units.
(d) Limited Detached on Lot with Multifamily: No more than two detached ADUs on a lot with a proposed multifamily dwelling, or up to eight detached ADUs on a lot with an existing multifamily dwelling, if each detached ADU satisfies all of the following:
(i) The side- and rear-yard setbacks are at least four feet. If the existing multifamily dwelling has a rear or side yard setback of less than four feet, the City will not require any modification to the multifamily dwelling as a condition of approving the ADU. (ii) The peak height above grade does not exceed the applicable height limit provided in Section 17.28.050(B) below.
(iii) If the lot has an existing multifamily dwelling, the quantity of detached ADUs does not exceed the number of primary dwelling units on the lot.

2. Class 2: Locally Regulated. Class 2 ADUs are approved under Government Code Sections 66314–66322.

Except for Class 1 ADUs approved under subsection (B)(1) above, all ADUs are subject to the standards set forth in Sections 17.28.050 and 17.28.060 below.

17.28.050 General ADU and JADU requirements.

The following requirements apply to all Class 1 and Class 2 ADUs and:

A. Zoning.

1. A Class 1 ADU approved under subsection 17.28.040(B)(1) may be created on a lot in a residential or mixed-use zone.

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2. A Class 2 ADU approved under subsection 17.28.040(B)(2) may be created on a lot that is zoned to allow single-family dwelling residential use or multifamily dwelling residential use.

3. In accordance with Government Code Section 66333(a), a JADU may only be created on a lot zoned for single-family residences.

B. Height.

1. Except as otherwise provided by subsections (B)(2) and (B)(3) below, a detached ADU created on a lot with an existing or proposed single family or multifamily dwelling unit may not exceed sixteen feet in height.

2. A detached ADU may be up to eighteen feet in height if it is created on a lot with an existing or proposed single family or multifamily dwelling unit that is located within one-half mile walking distance of a major transit stop or high quality transit corridor, as those terms are defined in Section 21155 of the Public Resources Code, and the ADU may be up to two additional feet in height (for a maximum of twenty feet) if necessary to accommodate a roof pitch on the ADU that is aligned with the roof pitch of the primary dwelling unit.

3. A detached ADU created on a lot with an existing or proposed multifamily dwelling that has more than one story above grade may not exceed eighteen feet in height.

4. An ADU that is attached to the primary dwelling may not exceed twenty-five feet in height or the height limitation imposed by the underlying zone that applies to the primary dwelling, whichever is lower. Notwithstanding the foregoing, ADUs subject to this subsection (B)(4) may not exceed two stories.

5. For purposes of this subsection (B), height is measured from existing legal grade or the level of the lowest floor, whichever is lower, to the peak of the structure.

C. Fire Sprinklers.

1. Fire sprinklers are required in an ADU or JADU if sprinklers are required in the primary residence.

2. The construction of an ADU or JADU does not trigger a requirement for fire sprinklers to be installed in the existing primary dwelling.

D. Rental Term. No ADU or JADU may be rented for a term that is shorter than 30 days. This prohibition applies regardless of when the ADU or JADU was created.

E. No Separate Conveyance. An ADU or JADU may be rented, but, except as otherwise provided in Government Code Section 66341, no ADU or JADU may be sold or otherwise conveyed separately from the lot and the primary dwelling (in the case of a single-family lot) or from the lot and all of the dwellings (in the case of a multifamily lot).

F. Septic System. If the ADU or JADU will connect to an onsite wastewater-treatment system, the owner must include with the application a percolation test completed within the last five years or, if the percolation test has been recertified, within the last ten years.

G. Owner Occupancy.

1. ADUs are not subject to an owner-occupancy requirement.

2. JADUs.
(a) Generally. As required by state law, all JADUs are generally subject to an owner-occupancy requirement. A natural person with legal or equitable title to the property must reside on the property, in either the primary dwelling or JADU, as the person's legal domicile and permanent residence.
(b) Exceptions. The owner-occupancy requirement in this subsection (G)(2) does not apply in either of the following situations:

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(i) The JADU has separate sanitation facilities (i.e., does not share sanitation facilities with the existing primary dwelling unit structure).
(ii) The property is entirely owned by another governmental agency, land trust, or housing organization.

H. Deed Restriction. Prior to issuance of a certificate of occupancy for a JADU, a deed restriction must be recorded against the title of the property in the County Recorder's office and a copy filed with the Director or other City employee as determined or designated by the City Manager. The deed restriction must run with the land and bind all future owners. The form of the deed restriction will be provided by the City and must provide that:

1. The JADU may not be sold separately from the primary dwelling.

2. The JADU is restricted to the approved size and to other attributes allowed by this Chapter.

3. The deed restriction runs with the land and may be enforced against future property owners.

4. The deed restriction may be removed if the owner eliminates the JADU, as evidenced by, for example, removal of the kitchen facilities. To remove the deed restriction, an owner may make a written request of the Director or other City employee as determined or designated by the City Manager, providing evidence that the JADU has in fact been eliminated. The Director or other City employee as determined or designated by the City Manager may then determine whether the evidence supports the claim that the JADU has been eliminated. Appeal may be taken from the Director's or other City employee as determined or designated by the City Manager determination consistent with other provisions of this code. If the JADU is not entirely physically removed, but is only eliminated by virtue of having a necessary component of an JADU removed, the remaining structure and improvements must otherwise comply with applicable provisions of this code.

5. The deed restriction is enforceable by the director or other City employee as determined or designated by the City Manager for the benefit of the City. Failure of the property owner to comply with the deed restriction may result in legal action against the property owner, and the City is authorized to obtain any remedy available to it at law or equity, including, but not limited to, obtaining an injunction enjoining the use of the JADU in violation of the recorded restrictions or abatement of the illegal unit.

I. Building & Safety.

1. Must Comply with Building Code. Subject to subsection (I)(2) below, all ADUs and JADUs must comply with all local building code requirements.

2. No Change of Occupancy. Construction of an ADU does not constitute a Group R occupancy change under the local building code, as described in Section 310 of the California Building Code, unless the Building Official or Code Enforcement Officer makes a written finding based on substantial evidence in the record that the construction of the ADU could have a specific, adverse impact on public health and safety. Nothing in this subsection (I)(2) prevents the City from changing the occupancy code of a space that was uninhabitable space or that was only permitted for nonresidential use and was subsequently converted for residential use in accordance with this Chapter.

J. Certificate of Occupancy Timing.

1. Generally. No certificate of occupancy for an ADU or JADU may be issued before the certificate of occupancy is issued for the primary dwelling unit.

2. Limited Exception for State-declared Emergencies. Notwithstanding subsection (J)(1) above, a certificate of occupancy for an ADU may be issued before a certificate of occupancy for the primary dwelling if each of the following requirements are met:
(a) The county is subject to a proclamation of a state of emergency made by the California Governor on or after February 1, 2025.

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(b) The primary dwelling was substantially damaged or destroyed by an event referenced in the Governor’s state of emergency proclamation.
(c) The ADU has been issued construction permits and has passed all required inspections. (d) The ADU is not attached to the primary dwelling.

17.28.060 Specific ADU requirements.

The following requirements apply only to Class 2 ADUs approved under subsection 17.28.040(B)(2) above:

A. Maximum Size.

1. The maximum size of a detached or attached ADU subject to this Section 17.28.060 is 850 square feet of interior livable space for a studio or one-bedroom unit and 1,000 square feet for a unit of interior livable space with two or more bedrooms.

2. An attached ADU that is created on a lot with an existing primary dwelling is further limited to 50 percent of the floor area of the existing primary dwelling.

3. Application of other development standards in this Section 17.28.060, such as FAR or lot coverage, might further limit the size of the ADU, but no application of the percent-based size limit in subsection (A)(2) above or of an FAR, front setback, lot coverage limit, or open-space requirement may require the ADU to be less than 800 square feet.

B. Floor Area Ratio (FAR). No ADU subject to this Section 17.28.060 may cause the total FAR of the lot to exceed 45 percent, subject to subsection (A)(3) above.

C. Setbacks.

1. ADUs that are subject to this Section 17.28.060 must conform to four-foot side and rear setbacks.

2. ADUs that are subject to this Section 17.28.060 must conform to 30-foot front setbacks, subject to subsection (A)(3) above.

3. No setback is required for an ADU that is subject to this Section 17.28.060 if the ADU is constructed in the same location and to the same dimensions as an existing structure.

D. Lot Coverage. No ADU subject to this Section 17.28.060 may cause the total lot coverage of the lot to exceed 50 percent, subject to subsection (A)(3) above.

E. Minimum Open Space. No ADU subject to this Section 17.28.060 may cause the total percentage of open space of the lot to fall below 50 percent, subject to subsection (A)(3) above.

F. Passageway. No passageway, as defined by Section 17.28.030(I) above, is required for an ADU.

G. Parking.

1. Generally. One off-street parking space is required for each ADU or bedroom, whichever is less. The parking space may be provided in setback areas or as tandem parking, as defined by subsection

17.28.030(L).

2. Exceptions. No parking under subsection (G)(1) is required in the following situations:
(a) The ADU is located within one-half mile walking distance of public transit, as defined in Section

17.28.030(K).
(b) The ADU is located within an architecturally and historically significant historic district. (c) The ADU is part of the proposed or existing primary residence or an accessory structure. (d) When on-street parking permits are required but not offered to the occupant of the ADU.

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(e) When there is an established car share vehicle stop located within one block of the ADU. (f) When the permit application to create an ADU is submitted with an application to create a new single-family or new multifamily dwelling on the same lot, provided that the ADU or the lot satisfies any other criteria listed in subsections (G)(2)(a) through (e) above.

3. No Replacement. When a garage, carport, covered parking structure, or uncovered parking space is demolished in conjunction with the construction of an ADU or converted to an ADU, those off-street parking spaces are not required to be replaced.

H. Architectural Requirements.

1. The materials and colors of the exterior walls, roof, and windows and doors must be the same as those of the primary dwelling.

2. The roof slope must match that of the dominant roof slope of the primary dwelling. The dominant roof slope is the slope shared by the largest portion of the roof.

3. The exterior lighting must be limited to down-lights or as otherwise required by the building or fire code.

4. The ADU must have an independent exterior entrance, apart from that of the primary dwelling.

5. The interior horizontal dimensions of an ADU must be at least ten feet wide in every direction, with a minimum interior wall height of seven feet.

6. No window or door of the ADU may have a direct line of sight to an adjoining residential property. Each window and door must either be located where there is no direct line of sight or screened using fencing, landscaping, or privacy glass to prevent a direct line of sight.

7. All windows and doors in an ADU less than thirty feet from a property line that is not a public right-ofway line must either be (for windows) clerestory with the bottom of the glass at least six feet above the finished floor, or (for windows and for doors) utilize frosted or obscure glass.

I. Historical Protections. An ADU that is on or within six hundred feet of real property that is listed in the California Register of Historic Resources must be located so as to not be visible from any public right-of-way.

J. Allowed Stories. No ADU subject to this Section 17.28.060 may have more than one story, except that an ADU that is attached to the primary dwelling may have the stories allowed under subsection 17.28.050(B)(4).

17.28.070 Fees.

The following requirements apply to all Class 1 ADUs and JADUs and Class 2 ADUs that are approved under subsections 17.28.040(B)(1) or 17.28.040(B)(2) above.

A. Impact Fees.

1. No impact fee is required for a JADU or for an ADU that is less than 750 square feet of interior livable space in size. For purposes of this subsection (A), "impact fee" means a "fee" under the Mitigation Fee Act (Gov. Code § 66000(b)) and a fee under the Quimby Act (Gov. Code § 66477). "Impact fee" here does not include any connection fee or capacity charge for water or sewer service.

2. A JADU or ADU with less than 500 square feet of interior livable space does not increase assessable space by 500 square feet for purposes of Education Code Section 17620(a)(1)(C), and is therefore not subject to school fees under Education Code section 17620.

3. Any impact fee that is required for an ADU that has 750 square feet or more of interior livable space must be charged proportionately in relation to the square footage of the primary dwelling unit. (E.g., the floor area of the ADU, divided by the floor area of the primary dwelling, times the typical fee amount charged for a new dwelling.)

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B. Utility Fees.

1. If an ADU or JADU is constructed with a new single-family home, a separate utility connection directly between the ADU or JADU and the utility and payment of the normal connection fee and capacity charge for a new dwelling are required.

2. Except as described in subsection (B)(1), JADUs and converted ADUs on a single-family lot that are created under subsection (B)(1)(a) are not required to have a new or separate utility connection directly between the JADU or ADU and the utility. Nor is a connection fee or capacity charge required.

Notwithstanding the rest of this paragraph, a direct utility connection is required for separate conveyance of an ADU when separate conveyance is allowed under this code.

3. Except as described in subsection (B)(1), all ADUs that are not covered by subsection (B)(2), require a new, separate utility connection directly between the ADU and the utility for any utility that is provided by the City. All utilities that are not provided by the City are subject to the connection and fee requirements of the utility provider.
(a) The connection is subject to a connection fee or capacity charge that is proportionate to the burden created by the ADU based on either the floor area or the number of drainage-fixture units (DFU) values, as defined by the Uniform Plumbing Code, upon the water or sewer system. (b) The portion of the fee or charge that is charged by the City may not exceed the reasonable cost of providing this service.

17.28.080 Nonconforming zoning code conditions, building code violations, and unpermitted structures.

A. Generally. The City will not deny an ADU or JADU application due to a nonconforming zoning condition, building code violation, or unpermitted structure on the lot that does not present a threat to the public health and safety and that is not affected by the construction of the ADU or JADU.

B. Unpermitted ADUs and JADUs constructed before 2020.

1. Permit to Legalize. As required by state law, the City may not deny a permit to legalize an existing but unpermitted ADU or JADU that was constructed before January 1, 2020, if denial is based on either of the following grounds:
(a) The ADU or JADU violates applicable building standards, or (b) The ADU or JADU does not comply with state ADU or JADU law or this ADU ordinance (Chapter

17.28).

2. Exceptions:
(a) Notwithstanding subsection (B)(1), the City may deny a permit to legalize an existing but unpermitted ADU or JADU that was constructed before January 1, 2020, if the City makes a finding that correcting a violation is necessary to comply with the standards specified in California Health and Safety Code Section 17920.3.
(b) Subsection (B)(1) does not apply to a building that is deemed to be substandard in accordance with California Health and Safety Code Section 17920.3.

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17.28.090 Nonconforming ADUs and discretionary approval.

Any proposed ADU or JADU that would otherwise be allowed under this Chapter but that does not conform to the objective design or development standards set forth in Section 17.28.010 through 17.28.080 of this Chapter may be allowed by the City with a conditional use permit, in accordance with the other provisions of this title.

17.28.100 Parcels Created Under Government Code Section 66499.41.

Notwithstanding anything to the contrary set forth in this Chapter, no ADU or JADU may be created on a parcel resulting from a subdivision under Government Code section 66499.41. (Gov. Code, § 66499.41(g).)

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STATE OF CALIFORNIA )
COUNTY OF LOS ANGELES ) §§

CITY OF ROLLING HILLS )
I, Christian Horvath, City Clerk of the City of Rolling Hills, California, do hereby certify that the foregoing Ordinance No. 388 was adopted at a regular meeting of the City Council of the City of Rolling Hills held on the 9th day of December, 2025, by the following vote:

AYES:

NOES:

ABSENT:

ABSTAIN:
______________________________
Christian Horvath
City Clerk

65277.00001\44382483.2
EXHIBIT “B”
Rolling Hills, California, Code of Ordinances November 12, 2025

Chapter 17.28

ACCESSORY DWELLING UNITS AND JUNIOR ACCESSORY DWELLING UNITS (Note: additions are noted in underline, and deletions in strikethrough) Sections:

17.28.010 Purpose.

The purpose of this Chapter section is to allow and regulate accessory dwelling units (ADUs) and junior accessory dwelling units (JADUs) in compliance with Chapter 13 of Division 1 of Title 7 of the California Government Code.

17.28.020 Effect of conforming.

An ADU or JADU that conforms to the standards in this Chapter section will not be:

A. Deemed to be inconsistent with the City's general plan and zoning designation for the lot on which the ADU or JADU is located.

B. Deemed to exceed the allowable density for the lot on which the ADU or JADU is located.

C. Considered in the application of any local ordinance, policy, or program to limit residential growth.

D. Required to correct a nonconforming zoning condition, as defined in subsection 17.28.030(H) below. This does not prevent the City from enforcing compliance with applicable building standards in accordance with Health and Safety Code sectionSection 17980.12.

17.28.030 Definitions.

As used in this Chapter section, terms are defined as follows:

A. "Accessory dwelling unit" or "ADU" means an attached or a detached residential dwelling unit that provides complete independent living facilities for one or more persons and is located on a lot with a proposed or existing primary residence. An accessory dwelling unit also includes the following:

1. An efficiency unit, as defined by Section 17958.1 of the California Health and Safety Code; and

2. A manufactured home, as defined by Section 18007 of the California Health and Safety Code.

B. "Accessory structure" means a structure that is accessory and incidental to a dwelling located on the same lot.

C. "Complete independent living facilities" means permanent provisions for living, sleeping, eating, cooking, and sanitation on the same parcel as the single-family or multifamily dwelling is or will be situated.

D. "Efficiency kitchen" means a kitchen that includes all of the following:

1. A cooking facility with appliances.

2. A food preparation counter and storage cabinets that are of a reasonable size in relation to the size of the JADU.

E. "Junior accessory dwelling unit" or "JADU" means a residential unit that satisfies all of the following:

1. It is no more than five hundred 500 square feet of interior livable space in size.

65277.00001\44382483.2

2. It is contained entirely within an existing or proposed single-family structure. An enclosed use within the residence, such as an attached garage, is considered to be a part of and contained within the single-family structure.

3. It includes its own separate sanitation facilities or shares sanitation facilities with the existing or proposed single-family structure.

4. If the unit does not include its own separate bathroom, then it contains an interior entrance to the main living area of the existing or proposed single-family structure in addition to an exterior entrance that is separate from the main entrance to the primary dwelling.

5. It includes an efficiency kitchen, as defined in subsection 17.28.030 (D) above.

F. "Livable space" means a space in a dwelling intended for human habitation, including living, sleeping, eating, cooking, or sanitation.

G. "Living area" means the interior habitable area of a dwelling unit, including basements and attics, but does not include a garage or any accessory structure.

H. "Nonconforming zoning condition" means a physical improvement on a property that does not conform with current zoning standards.

I. "Passageway" means a pathway that is unobstructed clear to the sky and extends from a street to one entrance of the ADU or JADU.

J. "Proposed dwelling" means a dwelling that is the subject of a permit application and that meets the requirements for permitting.

K. "Public transit" means a location, including, but not limited to, a bus stop or train station, where the public may access buses, trains, subways, and other forms of transportation that charge set fares, run on fixed routes, and are available to the public.

L. "Tandem parking" means that two or more automobiles are parked on a driveway or in any other location on a lot, lined up behind one another.

17.28.040 Approvals.

A. The following approvals apply to ADUs and JADUs created under this Chaptersection:

1. Ministerial ADU and Building Permits Required. Every ADU and JADU requires an ADU permit and a building permit. The City will review and approve permit applications in accordance with subsection (A)(3) below.

2. Processing Fee. The City may charge a fee to reimburse it for costs incurred in processing ADU permits, including the costs of adopting or amending the City’s ADU ordinance. The ADU-permit processing fee is determined by the Director of Community Development or other City employee as determined or designated by the City Manager and approved by the City Council by resolution.

3. Process and Timing.
(a) Completeness.
(i) Determination in 15 days. The City will determine whether an application to create or serve an ADU or JADU is complete and will provide written notice of the determination to the applicant within 15 business days after the City receives the application submittal. (ii) Incomplete items. If the City’s determination under subsection (A)(3)(a)(i) above is that the application is incomplete, the City’s notice must list the incomplete items and describe how the application can be made complete.

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(iii) Cure. After receiving a notice that the application is incomplete, the applicant may cure and address the items that were deemed by the City to be incomplete. (iv) Subsequent submittals. If the applicant submits additional information to address incomplete items, within 15 business days of the subsequent submittal the City will determine in writing whether the additional information remedies all the incomplete items that the City identified in its original notice. The City may not require the application to include an item that was not included in the original notice. (v) Deemed complete. If the City does not make a timely determination as required by this subsection (a), the application or resubmitted application is deemed complete for the purposes of subsection (A)(3)(c) below.
(vi) Appeal of incompleteness. An applicant may appeal the City’s determination that the application is incomplete by submitting a written appeal to the City Clerk. The Planning Commission will review the written appeal and affirm or reverse the completeness determination and provide a final written determination to the applicant within 60 business days after receipt of the appeal.
(b) No discretion or hearing. Ministerial permits for an ADU or JADU are considered and approved without discretionary review or a hearing.
(c) Deadline to approval or deny ministerial approvals. The City must approve or deny an application to create an ADU or JADU within 60 days from the date that the City receives a complete application. If the City has not approved or denied the complete application within 60 days, the application is deemed approved unless either:
(i) The applicant requests a delay, in which case the 60-day time period is tolled for the period of the requested delay, or
(ii) When an application to create an ADU or JADU is submitted with a permit application to create a new single-family or multifamily dwelling on the lot, the City may delay acting on the permit application for the ADU or JADU until the City acts on the permit application to create the new single-family or multifamily dwelling, but the application to create the ADU or JADU will still be considered ministerially without discretionary review or a hearing. (d) Denial. If the City denies an application to create an ADU or JADU, the City must provide the applicant with comments that include, among other things, a list of all the defective or deficient items and a description of how the application may be remedied by the applicant. Notice of the denial and corresponding comments must be provided to the applicant within the 60-day time period established by subsection (A)(3)(c) above.
(e) Appeal of denial. An applicant may appeal the City’s denial of the application by submitting a written appeal to the City Clerk. The Planning Commission will review the written appeal and affirm or reverse the denial and provide a final written determination to the applicant within 60 business days after receipt of the appeal.
(f) Concurrent review of demolition. A demolition permit for a detached garage that is to be replaced with an ADU is reviewed with the application for the ADU and issued at the same time.

B. Classes.

1. Class 1: Statutorily Regulated. Class 1 ADUs and JADUs are approved under Government Code Section 66323. If an ADU or JADU complies with each of the general requirements in Section 17.28.050, it is allowed in each of the scenarios provided in this subsection (B)(1). An ADU and JADU approved under subsection (B)(1)(a) may be combined with an ADU approved under subsection (B)(1)(b), and ADUs approved under subsection (B)(1)(c) may be combined with ADUs approved under subsection (B)(1)(d).

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A. Building-Permit Only. If an ADU or JADU complies with each of the general requirements in Section 17.28.050 below, it is allowed with only a building permit in the following scenarios:

1.(a) Converted on Single-family Lot with Single-Family: One ADU as described in this subsection (A)(1)(B)(1)(a) and one JADU on a lot with a proposed or existing single-family dwelling on it, where the ADU or JADU:
(a)(i) Is either: within the space of a proposed single-family dwelling; within the existing space of an existing single-family dwelling; or (in the case of an ADU only) within the existing space of an accessory structure, plus up to one hundred fifty150 additional square feet if the expansion is limited to accommodating ingress and egress; and (b)(ii) Has exterior access that is independent of that for the single-family dwelling; and (c)(iii) Has side and rear setbacks sufficient for fire and safety, as dictated by applicable building and fire codes.
(d)(iv) The JADU complies with the requirements of Government Code sections Sections 66333 through 66339.

2.(b) Limited Detached on Single-family Lot with Single-Family: One detached, new-construction ADU on a lot with a proposed or existing single-family dwelling (in addition to any JADU that might otherwise be established on the lot under subsection (A)(1) above), if the detached ADU satisfies each of the following limitations:
(a)(i) The side- and rear-yard setbacks are at least four feet. (b)(ii) The total floor area is eight hundred 800 square feet of livable space or smaller. (c)(iii) The peak height above grade does not exceed the applicable height limit in subsection

17.28.050(B) below.

3.(c) Converted on Multifamily Lot with Multifamily: One or more ADUs within portions of existing multifamily dwelling structures that are not used as livable space, including but not limited to storage rooms, boiler rooms, passageways, attics, basements, or garages, if each converted ADU complies with state building standards for dwellings. Under this subsection (A)(3)(B)(1)(c), at least one converted ADU is allowed within an existing multifamily dwelling, up to a quantity equal to twenty-five percent of the existing multifamily dwelling units.

4.(d) Limited Detached on Multifamily Lot with Multifamily: No more than two detached ADUs on a lot with a proposed multifamily dwelling, or up to eight detached ADUs on a lot with an existing multifamily dwelling, if each detached ADU satisfies all of the following:
(a)(i) The side- and rear-yard setbacks are at least four feet. If the existing multifamily dwelling has a rear or side yard setback of less than four feet, the City will not require any modification to the multifamily dwelling as a condition of approving the ADU. (b)(ii) The peak height above grade does not exceed the applicable height limit provided in subsection Section 17.28.050(B) below.
(c)(iii) If the lot has an existing multifamily dwelling, the quantity of detached ADUs does not exceed the number of primary dwelling units on the lot.

2. Class 2: Locally Regulated. Class 2 ADUs are approved under Government Code Sections 66314–66322.

Except for Class 1 ADUs approved under subsection (B)(1) above, all ADUs are subject to the standards set forth in Sections 17.28.050 and 17.28.060 below.

B. ADU Permit.

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1. Except as allowed under subsection 17.28.040(A) above, no ADU may be created without a building permit and an ADU permit in compliance with the standards set forth in Sections 17.28.050 and

17.28.060 below.

2. The City may charge a fee to reimburse it for costs incurred in processing ADU permits, including the costs of adopting or amending the City's ADU ordinance. The ADU-permit processing fee is determined by the Director of Community Development or other City employee as determined or designated by the City Manager and approved by the City Council by resolution.

C. Process and Timing.

1. An ADU permit is considered and approved ministerially, without discretionary review or a hearing.

2. The City must approve or deny an application to create an ADU or JADU within sixty days from the date that the City receives a completed application. If the City has not approved or denied the completed application within sixty days, the application is deemed approved unless either:
(a) The applicant requests a delay, in which case the sixty-day time period is tolled for the period of the requested delay, or
(b) When an application to create an ADU or JADU is submitted with a permit application to create a new single-family or multifamily dwelling on the lot, the City may delay acting on the permit application for the ADU or JADU until the City acts on the permit application to create the new single-family or multifamily dwelling, but the application to create the ADU or JADU will still be considered ministerially without discretionary review or a hearing.

3. If the City denies an application to create an ADU or JADU, the City must provide the applicant with comments that include, among other things, a list of all the defective or deficient items and a description of how the application may be remedied by the applicant. Notice of the denial and corresponding comments must be provided to the applicant within the sixty-day time period established by subsection 17.28.040(C)(2) above.

4. A demolition permit for a detached garage that is to be replaced with an ADU is reviewed with the application for the ADU and issued at the same time.

17.28.050 General ADU and JADU requirements.

The following requirements apply to all Class 1 and Class 2 ADUs and JADUs that are approved under subsections

17.28.040 (A) or (B) above:

A. Zoning.

1. AnA Class 1 ADU subject only to a building permit approved under subsection 17.28.040(A)(B)(1) above may be created on a lot in a residential or mixed-use zone.

2. AnA Class 2 ADU subject to an ADU permit approved under subsection 17.28.040(B)(2) above may be created on a lot that is zoned to allow single-family dwelling residential use or multifamily dwelling residential use.

3. In accordance with Government Code Section 66333(a), a JADU may only be created on a lot zoned for single-family residences.

B. Height.

1. Except as otherwise provided by subsections (B)(2) and (B)(3) below, a detached ADU created on a lot with an existing or proposed single family or multifamily dwelling unit may not exceed sixteen feet in height.

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2. A detached ADU may be up to eighteen feet in height if it is created on a lot with an existing or proposed single family or multifamily dwelling unit that is located within one-half mile walking distance of a major transit stop or high quality transit corridor, as those terms are defined in Section 21155 of the Public Resources Code, and the ADU may be up to two additional feet in height (for a maximum of twenty feet) if necessary to accommodate a roof pitch on the ADU that is aligned with the roof pitch of the primary dwelling unit.

3. A detached ADU created on a lot with an existing or proposed multifamily dwelling that has more than one story above grade may not exceed eighteen feet in height.

4. An ADU that is attached to the primary dwelling may not exceed twenty-five feet in height or the height limitation imposed by the underlying zone that applies to the primary dwelling, whichever is lower. Notwithstanding the foregoing, ADUs subject to this subsection (B)(4) may not exceed two stories.

5. For purposes of this subsection (B), height is measured from existing legal grade or the level of the lowest floor, whichever is lower, to the peak of the structure.

C. Fire Sprinklers.

1. Fire sprinklers are required in an ADU or JADU if sprinklers are required in the primary residence.

2. The construction of an ADU or JADU does not trigger a requirement for fire sprinklers to be installed in the existing primary dwelling.

D. Rental Term. No ADU or JADU may be rented for a term that is shorter than 30 thirty days. This prohibition applies regardless of when the ADU or JADU was created.

E. No Separate Conveyance. An ADU or JADU may be rented, but, except as otherwise provided in Government Code Section 66341, no ADU or JADU may be sold or otherwise conveyed separately from the lot and the primary dwelling (in the case of a single-family lot) or from the lot and all of the dwellings (in the case of a multifamily lot).

F. Septic System. If the ADU or JADU will connect to an onsite wastewater-treatment system, the owner must include with the application a percolation test completed within the last five years or, if the percolation test has been recertified, within the last ten years.

G. Owner Occupancy.

1. ADUs created under this section on or after January 1, 2020 are not subject to an owner-occupancy requirement.

2. JADUs.
(a) Generally. As required by state law, all JADUs are generally subject to an owner-occupancy requirement. A natural person with legal or equitable title to the property must reside on the property, in either the primary dwelling or JADU, as the person's legal domicile and permanent residence. However, the owner-occupancy requirement in this subsection (G)(2) does not apply if the property is entirely owned by another governmental agency, land trust, or housing organization.
(b) Exceptions. The owner-occupancy requirement in this subsection (G)(2) does not apply in either of the following situations:
(i) The JADU has separate sanitation facilities (i.e., does not share sanitation facilities with the existing primary dwelling unit structure).
(ii) The property is entirely owned by another governmental agency, land trust, or housing organization.

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H. Deed Restriction. Prior to issuance of a certificate of occupancy for an ADU or a JADU, a deed restriction must be recorded against the title of the property in the County Recorder's office and a copy filed with the Director or other City employee as determined or designated by the City Manager. The deed restriction must run with the land and bind all future owners. The form of the deed restriction will be provided by the City and must provide that:

1. Except as otherwise provided in Government Code Section 66341, the ADU or The JADU may not be sold separately from the primary dwelling.

2. The ADU or JADU is restricted to the approved size and to other attributes allowed by this section Chapter.

3. The deed restriction runs with the land and may be enforced against future property owners.

4. The deed restriction may be removed if the owner eliminates the ADU or JADU, as evidenced by, for example, removal of the kitchen facilities. To remove the deed restriction, an owner may make a written request of the Director or other City employee as determined or designated by the City Manager, providing evidence that the ADU or JADU has in fact been eliminated. The Director or other City employee as determined or designated by the City Manager may then determine whether the evidence supports the claim that the ADU or JADU has been eliminated. Appeal may be taken from the Director's or other City employee as determined or designated by the City Manager determination consistent with other provisions of this code. If the ADU or JADU is not entirely physically removed, but is only eliminated by virtue of having a necessary component of an ADU or JADU removed, the remaining structure and improvements must otherwise comply with applicable provisions of this code.

5. The deed restriction is enforceable by the director or other City employee as determined or designated by the City Manager for the benefit of the City. Failure of the property owner to comply with the deed restriction may result in legal action against the property owner, and the City is authorized to obtain any remedy available to it at law or equity, including, but not limited to, obtaining an injunction enjoining the use of the ADU or JADU in violation of the recorded restrictions or abatement of the illegal unit.

I. Occupancy Reporting. With a building-permit application, the applicant must provide the City the applicant's intention regarding the occupancy plans for the ADU or JADU. Within ninety days after each January 1 following issuance of the building permit, the owner must report whether or not the ADU or JADU was occupied by a tenant during the prior year.

IJ. Building & Safety.

1. Must Comply with Building Code. Subject to subsection (J)(2)(I)(2) below, all ADUs and JADUs must comply with all local building code requirements.

2. No Change of Occupancy. Construction of an ADU does not constitute a Group R occupancy change under the local building code, as described in Section 310 of the California Building Code, unless the Building Official or Code Enforcement Officer makes a written finding based on substantial evidence in the record that the construction of the ADU could have a specific, adverse impact on public health and safety. Nothing in this subsection (J)(2)(I)(2) prevents the City from changing the occupancy code of a space that was uninhabitable space or that was only permitted for nonresidential use and was subsequently converted for residential use in accordance with this section Chapter.

J. Certificate of Occupancy Timing.

1. Generally. No certificate of occupancy for an ADU or JADU may be issued before the certificate of occupancy is issued for the primary dwelling unit.

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2. Limited Exception for State-declared Emergencies. Notwithstanding subsection (J)(1) above, a certificate of occupancy for an ADU may be issued before a certificate of occupancy for the primary dwelling if each of the following requirements are met:
(a) The county is subject to a proclamation of a state of emergency made by the California Governor on or after February 1, 2025.
(b) The primary dwelling was substantially damaged or destroyed by an event referenced in the Governor’s state of emergency proclamation.
(c) The ADU has been issued construction permits and has passed all required inspections. (d) The ADU is not attached to the primary dwelling.

17.28.060 Specific ADU requirements.

The following requirements apply only to Class 2 ADUs that require an ADU permit approved under subsection 17.28.040(B)(2) above:

A. Maximum Size.

1. The maximum size of a detached or attached ADU subject to this Section 17.28.060 is eight hundred fifty 850 square feet of interior livable space for a studio or one-bedroom unit and 1,000one thousand square feet for a unit of interior livable space with two or more bedrooms.

2. An attached ADU that is created on a lot with an existing primary dwelling is further limited to 50 fifty percent of the floor area of the existing primary dwelling.

3. Application of other development standards in this Section 17.28.060, such as FAR or lot coverage, might further limit the size of the ADU, but no application of the percent-based size limit in subsection (A)(2) above or of an FAR, front setback, lot coverage limit, or open-space requirement may require the ADU to be less than eight hundred800 square feet.

B. Floor Area Ratio (FAR). No ADU subject to this Section 17.28.060 may cause the total FAR of the lot to exceed forty-five 45 percent, subject to subsection (A)(3) above.

C. Setbacks.

1. ADUs that are subject to this Section 17.28.060 must conform to four-foot side and rear setbacks.

2. ADUs that are subject to this Section 17.28.060 must conform to 30thirty-foot front setbacks, subject to subsection (A)(3) above.

3. No setback is required for an ADU that is subject to this Section 17.28.060 if the ADU is constructed in the same location and to the same dimensions as an existing structure.

D. Lot Coverage. No ADU subject to this Section 17.28.060 may cause the total lot coverage of the lot to exceed fifty 50 percent, subject to subsection (A)(3) above.

E. Minimum Open Space. No ADU subject to this Section 17.28.060 may cause the total percentage of open space of the lot to fall below fifty 50 percent, subject to subsection (A)(3) above.

F. Passageway. No passageway, as defined by Section 17.28.030(I) above, is required for an ADU.

G. Parking.

1. Generally. One off-street parking space is required for each ADU or bedroom, whichever is less. The parking space may be provided in setback areas or as tandem parking, as defined by subsection Section

17.28.030(L) above.

2. Exceptions. No parking under subsection 17.28.060(G)(1) is required in the following situations:

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(a) The ADU is located within one-half mile walking distance of public transit, as defined in Section

17.28.030(K) above.
(b) The ADU is located within an architecturally and historically significant historic district. (c) The ADU is part of the proposed or existing primary residence or an accessory structure under subsection 17.28.040(A)(1) above.
(d) When on-street parking permits are required but not offered to the occupant of the ADU. (e) When there is an established car share vehicle stop located within one block of the ADU. (f) When the permit application to create an ADU is submitted with an application to create a new single-family or new multifamily dwelling on the same lot, provided that the ADU or the lot satisfies any other criteria listed in subsections (G)(2)(a) through (e) above.

3. No Replacement. When a garage, carport, covered parking structure, or uncovered parking space is demolished in conjunction with the construction of an ADU or converted to an ADU, those off-street parking spaces are not required to be replaced.

H. Architectural Requirements.

1. The materials and colors of the exterior walls, roof, and windows and doors must be the same as those of the primary dwelling.

2. The roof slope must match that of the dominant roof slope of the primary dwelling. The dominant roof slope is the slope shared by the largest portion of the roof.

3. The exterior lighting must be limited to down-lights or as otherwise required by the building or fire code.

4. The ADU must have an independent exterior entrance, apart from that of the primary dwelling.

5. The interior horizontal dimensions of an ADU must be at least ten feet wide in every direction, with a minimum interior wall height of seven feet.

6. No window or door of the ADU may have a direct line of sight to an adjoining residential property. Each window and door must either be located where there is no direct line of sight or screened using fencing, landscaping, or privacy glass to prevent a direct line of sight.

7. All windows and doors in an ADU less than thirty feet from a property line that is not a public right-ofway line must either be (for windows) clerestory with the bottom of the glass at least six feet above the finished floor, or (for windows and for doors) utilize frosted or obscure glass.

I. Historical Protections. An ADU that is on or within six hundred feet of real property that is listed in the California Register of Historic Resources must be located so as to not be visible from any public right-of-way.

J. Allowed Stories. No ADU subject to this Section 17.28.060 may have more than one story, except that an ADU that is attached to the primary dwelling may have the stories allowed under subsection 17.28.050(B)(4).

17.28.070 Fees.

The following requirements apply to all Class 1 ADUs and JADUs and Class 2 ADUs that are approved under subsections 17.28.040(A)(B)(1) or 17.28.040(B)(2) above.

A. Impact Fees.

1. No impact fee is required for a JADU or for an ADU that is less than seven hundred fifty750 square feet of interior livable space in size. For purposes of this Sectionsubsection 17.28.070(A), "impact fee" means a "fee" under the Mitigation Fee Act (Gov. Code § 66000(b)) and a fee under the Quimby Act

65277.00001\44382483.2

(Gov. Code § 66477). "Impact fee" here does not include any connection fee or capacity charge for water or sewer service.

2. A JADU or ADU with less than 500 square feet of interior livable space does not increase assessable space by 500 square feet for purposes of Education Code Section 17620(a)(1)(C), and is therefore not subject to school fees under Education Code section 17620.

23. Any impact fee that is required for an ADU that ishas seven hundred fifty 750 square feet or larger in sizemore of interior livable space must be charged proportionately in relation to the square footage of the primary dwelling unit. (E.g., the floor area of the ADU, divided by the floor area of the primary dwelling, times the typical fee amount charged for a new dwelling.) B. Utility Fees.

1. If an ADU or JADU is constructed with a new single-family home, a separate utility connection directly between the ADU or JADU and the utility and payment of the normal connection fee and capacity charge for a new dwelling are required.

2. Except as described in subsection 17.28.070(B)(1), JADUs and converted ADUs on a single-family lot that are created under subsection (B)(1)(a) are not required to have a new or separate utility connection directly between the JADU or ADU and the utility. Nor is a connection fee or capacity charge required. Notwithstanding the rest of this paragraph, a direct utility connection is required for separate conveyance of an ADU when separate conveyance is allowed under this code.

3. Except as described in subsection 17.28.070(B)(1), all ADUs that are not covered by subsection

17.28.070(B)(2), require a new, separate utility connection directly between the ADU and the utility for any utility that is provided by the City. All utilities that are not provided by the City are subject to the connection and fee requirements of the utility provider. (a) The connection is subject to a connection fee or capacity charge that is proportionate to the burden created by the ADU based on either the floor area or the number of drainage-fixture units (DFU) values, as defined by the Uniform Plumbing Code, upon the water or sewer system. (b) The portion of the fee or charge that is charged by the City may not exceed the reasonable cost of providing this service.

17.28.080 Nonconforming zoning code conditions, building code violations, and unpermitted structures.

A. Generally. The City will not deny an ADU or JADU application due to a nonconforming zoning condition, building code violation, or unpermitted structure on the lot that does not present a threat to the public health and safety and that is not affected by the construction of the ADU or JADU.

B. Unpermitted ADUs and JADUs constructed before 2020.

1. Permit to Legalize. As required by state law, the City may not deny a permit to legalize an existing but unpermitted ADU or JADU that was constructed before January 1, 2020, if denial is based on either of the following grounds:
(a) The ADU or JADU violates applicable building standards, or (b) The ADU or JADU does not comply with state ADU or JADU law or this ADU ordinance (Chapter

17.28).

2. Exceptions:
(a) Notwithstanding subsection 17.28.080(B)(1), the City may deny a permit to legalize an existing but unpermitted ADU or JADU that was constructed before January 1, 2020, if the City makes a

65277.00001\44382483.2

finding that correcting a violation is necessary to comply with the standards specified in California Health and Safety Code Section 17920.3.
(b) Subsection 17.28.080(B)(1) does not apply to a building that is deemed to be substandard in accordance with California Health and Safety Code Section 17920.3.

17.28.090 Nonconforming ADUs and discretionary approval.

Any proposed ADU or JADU that would otherwise be allowed under this section Chapter but that does not conform to the objective design or development standards set forth in Section 17.28.010 through 17.28.080 of this chapterChapter may be allowed by the City with a conditional use permit, in accordance with the other provisions of this title.

17.28.100 Parcels Created Under Government Code Section 66499.41.

Notwithstanding anything to the contrary set forth in this Chapter, no ADU or JADU may be created on a parcel resulting from a subdivision under Government Code section 66499.41. (Gov. Code, § 66499.41(g).)

Item: 12.A.

Meeting Date: 11/24/2025
To: City Council
From: Samantha Crew, Management Analyst
Thru: Karina Bañales, City Manager
Subject: Receive and File the Annual Municipal Stormwater Report for Fiscal Year 2024-25 Background:

The municipal stormwater permit requires that each city submit an individual annual report, no later than December 15 of each year, covering the preceding July 1 to June 30 reporting year, using the annual report form provided by the Los Angeles Regional Water Quality Control Board (LA Water Board). Each City or Permittee is required to report on its expenditures, funding sources, and progress on implementing the following programs: Non-Stormwater Discharge Prohibitions, Minimum Control Measures, the Non-Stormwater Outfall-Based Screening and Monitoring Program, Trash TMDLs, and Trash Discharge Prohibitions.

On October 19, 2022, the City received conditional approval to participate in the Palos Verdes Peninsula Watershed Management Program (PVP WMP) as an 85th%, 24-hour stormwater retention area, and is receiving deemed compliance with final WQBELs and receiving water limitations by demonstrating through flow monitoring in the Sepulveda Canyon that its natural canyon drainage system is can retain all conditionally exempt, non-essential non-stormwater and stormwater runoff up to and including the volume equivalent to the 85th percentile, 24-hour rain event for its drainage areas tributary to Machado Lake as provided for in Order R4-2021-0105 Part X.B.2.b.iii. The City is also implementing its required actions and schedules in the approved PVP WMP in accordance with the conditions of approval.

Discussion:

On November 4, 2025, the Los Angeles Regional Water Quality Control Board issued a memorandum to Permittees, which includes the City of Rolling Hills, outlining how the individual annual report for the 2024-25 reporting year should be structured to reflect the provisions of the permit and the deemed compliance status of pollutant limitations in the approved Watershed Management Programs. That memo includes additional guidance to assist in the understanding of requirements and to facilitate improved reporting. The City’s deemed compliance, based on the retention of the 85th percentile, 24-hour rainfall runoff, reduces the City’s reporting burden for demonstrating compliance.

The attached annual report (Attachment A) meets the City’s obligation to prepare an annual report

detailing its municipal stormwater program implementation. The flow data for the 2024-25 rainy season in Sepulveda Canyon is attached to the report, as required by the conditions of deemed compliance. It will be finalized with supporting attachments and submitted to the LA Water Board by the December 15th deadline.

Additional Information
For reference, staff has included the City of Rolling Hills’ timeline requirements under the Regional Stormwater Permit, as well as the Measure W reporting requirements under the Safe, Clean Water Municipal Program (Attachment B). This information is provided for context only and is important because it demonstrates the City’s continued compliance with regulatory obligations, supports transparency in how staff and consultants coordinate this work, and assists the Council in understanding the workload and requirements associated with these mandates.

Fiscal Impact:

To date, McGowan Consulting has expended approximately $9,300 toward preparation of the Annual Stormwater Report, which remains well within the allocated budget of $10,700 under the existing Professional Services Agreement. Final costs are expected to increase slightly to complete the report, including coordinating final edits, obtaining the City Manager’s signature, and submitting the report to the Los Angeles Regional Water Quality Control Board following City Council approval.

Total expenditures are anticipated to remain within the approved budget.

It's important to note that the City’s Annual Reporting costs are not eligible for Measure W funding.

Preparation of the Annual Stormwater Report is an ongoing requirement of the Municipal Separate Storm Sewer System (MS4) Permit and has been mandated since the initial stormwater permit issuance in the early 1990s. Only tasks considered new efforts for the City following the adoption of Measure W qualify for Measure W reimbursement; therefore, the work performed continues to be funded through the City’s general stormwater program budget.

Recommendation:

Receive and file.

Attachments:

1. Attachment A - PW_STP_251124_AnnualStormwaterReport_FY2024-25_F

2. Attachment B RH_ReportingSchedule_2025-11-17 (1)

City of Rolling Hills
Reporting Year 2024-25
1 Regional Phase I MS4 NPDES Permit
Order No. R4-2021-0105
NPDES No. CAS004004
City of Rolling Hills Individual Annual Report
Reporting Year 2024-25
Sections 2-8 of this form include items to be reported individually by each Permittee for this reporting year unless otherwise indicated.

Permittee Name City of Rolling Hills
Permittee Program Contact Karina Bañales
Title City Manager
Address 2 Portuguese Bend Road
City Rolling Hills
Zip Code 90274
Phone 310-377-1521
Email [email protected]
List of Attachments
ATTACHMENT A: City Attorney Statement of Legal Authority ATTACHMENT B: Machado Lake Trash TMDL Reporting Form
Attachment C: Santa Monica Bay Debris TMDL Reporting Form Attachment D: Sepulveda Canyon Continuous Flow Monitoring Data

City of Rolling Hills
Reporting Year 2024-25
2 2. Legal Authority and Certification
Complete the items on this page.

2.1 Answer the following questions on Legal Authority [Order – VI.B.2].

Question Yes No
Is there a current statement certified by the Permittee’s chief legal counsel that the Permittee has the legal authority within its jurisdiction to implement and enforce each of the requirements contained in 40 CFR § 122.26(d)(2)(i)(A-F) and the Order?
☒ ☐
Has the above statement been developed or updated within this reporting year? If yes, attach the updated legal authority statement to this report. ☒ ☐

2.2 Complete the required certification below [Attachment D – V.B.5]. “I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations.” Signature of either a principal executive officer, ranking elected official, or by a duly authorized representative of a principal executive officer or ranking elected official. A person is a duly authorized representative only if:
a. The authorization is made in writing by a principal executive officer or ranking elected official.
b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the company. (A duly authorized representative may thus be either a named individual or any individual occupying a named position.) c. The written authorization is submitted to the Regional Board.

If an authorization of a duly authorized representative is no longer accurate because a different individual or position has responsibility for the overall operation of the facility, a new authorization will be submitted to the Regional Board prior to or together with any reports, information, or applications, to be signed by an authorized representative.

Signature
Title City Manager
Date

City of Rolling Hills Reporting Year 2024-25
3 3. Program Expenditures
Complete the following items in this section.

3.1 Source(s) of funds used in this reporting year, and proposed for the next reporting year, to meet necessary expenditures on the Permittee’s stormwater management program [Order – VI.C.2].

The City funds implementation of the MS4 Permit and TMDL compliance primarily through its General Fund. The City is receiving approximately $100,000 per year from the Safe Clean Water Program for its municipal stormwater program which addresses a portion of the stormwater program costs.

The City utilizes contract Building & Safety services for new and redevelopment plan checking, permitting, and construction site inspections. The contract building officials collect permit fees from developers that offset the cost of stormwater compliance review and inspection for development projects under the Planning and Land Development Program and the Development Construction Program – those costs and fees are not included in the following program expenditures.

City of Rolling Hills Reporting Year 2024-25
4 3.2 Complete the table below on program expenditures for this reporting year [Attachment D – VII.A.5]. Enter “0” for any fields that do not apply.

Category
Capital
Expenditures
1 Land Costs
Personnel
Cost [m]
Consultant (s) Cost
Overhead
Costs
Construction
Costs
Permit(s), Operation,
and Maintenance
(O&M) Costs
Total Expenditures
for this Reporting
Year
Program Budget for
Next Reporting Year
(1) Program Management2[a] $0 $0 $3,324 $33,983 $178 $0 $0 $37,485 $42,504 (2) NPDES MS4 Permit Fees $0 $0 $0 $0 $0 $0 $7,279 $7,279 $7,279 (3) Minimum Control
Measures (MCMs)
PIPP $0 $0 $532 $14,758 $0 $0 $0 $15,290 $18,632
Industrial / Commercial Facilities
Program [b]
$0 $0 $0 $0 $0 $0 $0 $0 $0
Planning & Land Development
Program3[c]
$0 $0 $626 $1,006 $0 $0 $0 $1,632 $3,326
Construction Program [d] $0 $0 $418 $1,555 $0 $0 $0 $1,973 $2,518 Public Agency Activities Program [e] $0 $0 $399 $4,455 $0 $0 $59 $4,913 $6,799 IDDE Program $0 $0 $266 $1,769 $0 $0 $0 $2,035 $3,466
Additional Institutional BMPs /
“Enhanced” MCMs [f]
$0 $0 $5,581 $0 $0 $0 $0 $5,581 $6,000
1 Exclude land costs.
2 Including but not limited to program management plans, mail, legal support, travel, conferences, printing, producing manuals and handbooks, annual/semi-annual reporting, development and maintenance of any electronic databases required by this permit including GIS, and other non-labor costs.
3 Including but not limited to environmental review, development project approval and verification, and permitting and licensing costs specific to the provisions of the Order that are beyond the scope of a normal plan review, permitting, and inspection process.

City of Rolling Hills Reporting Year 2024-25
5 Category
Capital
Expenditures
1 Land Costs
Personnel
Cost [m]
Consultant (s) Cost
Overhead
Costs
Construction
Costs
Permit(s), Operation,
and Maintenance
(O&M) Costs
Total Expenditures
for this Reporting
Year
Program Budget for
Next Reporting Year
(4) TMDL Implementation Plan / Watershed
Management Program Development 4[g]
$0 $0 $0 $0 $0 $0 $0 $0 $0
(5) Projects
5 Distributed Projects and Green Streets $0 $0 $0 $0 $0 $0 $0 $0 $0 Regional Projects $0 $0 $0 $0 $0 $0 $0 $0 $0
Other Structural BMPs $0 $0 $0 $0 $0 $0 $0 $0 $0
(6) Trash Compliance
Trash TMDLs6[h] $0 $0 $0 $0 $0 $0 $0 $0 $0
Discharge Prohibitions - Trash7[i] $0 $0 $0 $0 $0 $0 $0 $0 $0 4 Include costs for development and/or revision of Implementation Plans (e.g., TMDL Implementation Plan, Watershed Management Programs including Reasonable Assurance Analysis). Specify which plans these are in Section 3.3. 5 If a Permittee is implementing a project collaboratively, the Permittee should only include the portion of the project cost that it is assuming. 6 Includes full capture, partial capture, and institutional controls used to comply with trash TMDLs. 7 Includes full capture, partial capture, and institutional controls used to comply with Statewide Trash Provisions.

City of Rolling Hills Reporting Year 2024-25
6 Category
Capital
Expenditures
1 Land Costs
Personnel
Cost [m]
Consultant (s) Cost
Overhead
Costs
Construction
Costs
Permit(s), Operation,
and Maintenance
(O&M) Costs
Total Expenditures
for this Reporting
Year
Program Budget for
Next Reporting Year
(7) Monitoring
Monitoring Plan Development8[j] $0 $0 $0 $0 $0 $0 $0 $0 $ 0 Outfall and Receiving Water Quality
Monitoring [k]
$0 $0 $0 $84,108 $2,997 $0 $0 $87,105 $81,165
BMP Effectiveness Monitoring [l] $0 $0 $399 $14,345 $0 $0 $0 $14,744 $21,629 Regional Studies9 $0 $0 $0 $0 $0 $0 $0 $0 $0
Special Studies10 $0 $0 $0 $0 $0 $0 $0 $0 $0
(8) Other11 $0 $0 $0 $0 $0 $0 $0 $0 $0
TOTAL $0 $0 $11,544 $155,979 $3,176 $0 $7,338 $178,037 $193,318

3.3 Additional Information: Please add any additional comments on stormwater expenditures below. 8 Includes costs to develop and/or revise monitoring plans (e.g., TMDL Monitoring Plan, IMP, CIMPs, non-stormwater screening and monitoring program). Specify which plans these are in Section 3.3. 9 Includes costs to comply with Part X (Regional Studies) of the Attachment E-MRP. 10 Includes costs to comply with Part XI (Special Studies) of the Attachment E-MRP. 11 Enter costs in this table but specify what this “Other” category consists of in Section 3.3. [a] Program Management costs shown do not include costs for developing and/or maintaining up-to-date information in electronic databases required by the Regional MS4 Permit, rather such costs are included with the specific MS4 Permit program the database supports.
[b] The City does not have any industrial or commercial facilities, so this category is not applicable. [c] Costs for reviewing/approving LID plans for Priority Development Projects are covered by plan check permit fees and are not included in costs shown in Section/Table 3.2 because they cannot be separately tracked.

City of Rolling Hills Reporting Year 2024-25
7 [d] Costs for inspection of active construction sites for effective stormwater BMPs and tracking of active construction projects in a database are covered by construction permit fees and are not included in the costs shown in Table 3.2 because they cannot be separately tracked.
[e] Public Agency Activities costs include the cost for staff training. [f] Cost for enhanced MCMs includes cost for code enforcement staff time on wildfire prevention measures and enhanced construction oversight.
[g] While an adaptive management process for the PVP WMP will be conducted in FY2025-26, cost for that effort is covered under consulting services shown in the Program Management line item along with PVP WMG's monitoring consultant in-kind time not included in Table 3.2 above.
[h]Trash TMDL costs are included with BMP effectiveness monitoring as the City has met its waste load allocation and continues to demonstrate this by monitoring drainage canyons on an annual basis. [i] The City is exempt from the Statewide Trash Provisions for areas outside of TMDL areas as it has no priority land uses. [j] Work to update the Palos Verdes Peninsula CIMP was largely completed in FY22-23. Further revisions to address LA Water Board staff comments were not tracked separately and are included in the Outfall and Receiving Water Monitoring costs. [k] Peninsula outfall and receiving water monitoring costs include the City's share of cost to implement the Palos Verdes Peninsula CIMP and the City’s share of Greater Harbor Waters Toxics TMDL receiving water monitoring which is conducted under a separate MOU.
[l] BMP effectiveness monitoring line item includes costs for drainage canyon trash monitoring to demonstrate compliance with trash TMDLs and representative canyon flow monitoring to demonstrate effective retention of 85th%, 24-hour rainfall runoff per the approved Palos Verdes Peninsula WMP.
[m] Personnel costs are calculated in Table 3.2 using estimated City staff time on stormwater program implementation multiplied by their fully burdened rates, which include overhead and benefits. For FY25-26 budgeting, staff hours and rates were assumed to remain the same as FY24-25.

The City employs a very small staff, with one staff person assigned lead responsibility for implementation of the stormwater program. The City also retains a stormwater consulting firm to assist with MS4 Permit coordination, management, and implementation, including the City’s share of watershed coordination and implementation efforts. During the reporting year, the City also contracted for code compliance assistance services to proactively identify and address non-compliant construction sites in the City as well as to identify and address dead or dying vegetation to proactively abate wildfire fuel.

City of Rolling Hills
Reporting Year 2024-25
8 4. Non-Stormwater Discharge Prohibitions [reporting period 9/11/21 – 6/30/22] Complete the following items in this section.

4.1 Provide an assessment of the effectiveness of the Permittee’s control measures in effectively prohibiting non-stormwater discharges into the MS4 to the receiving water [Order – III.A].

4.2 Describe sources of non-stormwater discharges determined to be a NPDES permitted discharge, a discharge subject to CERCLA, a conditionally exempt non-stormwater discharge, or entirely comprised of natural flows [Order - III.A.2].

4.3 Check all that apply [Order – III.A.4].

There has been non-stormwater discharge(s) to an ASBS ☐ The non-stormwater discharge(s) to the ASBS caused or contributed to an exceedance receiving water limitations, WQBELs, water quality objectives in Chapter II of the Ocean Plan, or an undesirable alteration in natural ocean water quality in an ASBS
☐
Additional BMPs were implemented to address the exceedances above ☐

4.4 If you had non-stormwater discharge(s) to an ASBS that caused or contributed to an exceedance receiving water limitations, WQBELs, water quality objectives in Chapter II of the Ocean Plan, or an undesirable alteration in natural ocean water quality in an ASBS, describe what additional BMPs were implemented to address these exceedances. How effective were those BMPs in addressing the exceedances? [Order - III.A.4.b] Results of the City’s Non-stormwater Screening and Monitoring Program have demonstrated that the City’s non-stormwater control measures are effective. Additionally, continuous flow monitoring near the bottom of a representative natural drainage canyon in the City continues to document that non-stormwater discharges from the City into downstream MS4s have been effectively eliminated.

No such non-stormwater discharges to the MS4 have been identified by the City.

Not applicable, the City does not discharge to an ASBS.

City of Rolling Hills
Reporting Year 2024-25
9 4.5 Did you develop and implement procedures to ensure that a discharger, if not a named Permittee in this Order, fulfilled the requirements of Part III.A.5.a.i-vi? If so, provide a link to where the procedures may be found or attach to this Annual Report [Order – III.A.5.a].

4.6 Did you organize and maintain records of all notifications, local permits, and non-stormwater discharges greater than 100,000 gallons in an electronic database? (Yes or No) [Order – III.A.5.b]

4.7 Did you determine that any of the conditionally exempt non-stormwater discharges, with the exception of essential non-stormwater discharges, identified per Part III.A.5.c of the Order is a source of pollutants that causes or contributes to an exceedance of applicable receiving water limitations and/or water quality-based effluent limitations? If so, how many of the conditionally exempt non-stormwater discharges in Part III.A.3.b of the Order did you determine to be sources of pollutants that caused or contributed to an exceedance of receiving water limitations or WQBELs? If you made that determination, which type(s) of nonstormwater discharges in Part III.A.3.b were sources of pollutants? [Order – III.A.6] Given the City’s entirely residential, semi-rural character with drainage consisting primarily of natural drainage courses, many of the provisions of Part III.A.5.a do not apply.

The City has developed and implements an Illicit Discharge Detection & Elimination Program to respond to reports of illicit discharges into the natural canyon drainage system. Additionally, with respect to the conditions for landscape irrigation using potable water, since 2010 the City has been applying water efficient landscape requirements to projects subject to discretionary review. On May 13, 2019, the City adopted its own water efficient landscape ordinance consistent with the amended statewide 2015 MWELO. During the reporting year four (4) landscape plans were submitted for review by the City for consistency with the City’s water efficient landscape ordinance, and one (1) project was approved for installation. The City also disseminates educational material on native and drought tolerant landscaping, water conservation, and water use restrictions through the City’s website and bi-weekly newsletter.

Additionally, California Water Service, the retail water provider to all residents in the City, has instituted prohibitions on outdoor water use as described at: https://drought.calwater.com/ which are consistent with the requirements for conditionally exempt non-stormwater discharges. The City’s Environmental Programs page disseminates information on other types of conditionally exempt discharges that may occur from residential land uses with the City.

The City has not received notifications of non-stormwater discharges greater than 100,000 gallons since the effective date of the Permit but plansto do so if it is notified of such discharges in the future. Los Angeles County Flood Control District would be the more likely recipient of such notifications since it operates the MS4 infrastructure which receives discharges from the natural canyon drainage system in the City. The City does not issue local permits for conditionally exempt non-stormwater discharges.

No, the City has not identified any conditionally exempt non-stormwater discharges that have caused or contributed to an exceedance of appliable receiving water limitations or WQBELs.

City of Rolling Hills
Reporting Year 2024-25
10 4.8 If you answered yes to the question 4.7 above, check all that apply [Order – III.A.6].

Effectively prohibit the non-stormwater discharge into the MS4 ☐ Impose conditions in addition to those in Table 5 of the Order, subject to approval by the Los Angeles Water Board Executive Officer, on the non-stormwater discharge such that it will not be a source of pollutants ☐
Require diversion of the non-stormwater discharge to the sanitary sewer ☐ Require treatment of the non-stormwater discharge prior to discharge to the receiving water ☐

City of Rolling Hills
Reporting Year 2024-25
11 5. Non-Stormwater Outfall Screening and Monitoring [reporting period 9/11/21 – 6/30/22] Complete the following items in this section.

5.1 Complete the tables below regarding your Non-Stormwater Outfall-Based Screening and Monitoring Program [Attachment E – VII]. Receiving Water No. of Outfalls within your Jurisdiction No. of Outfalls Screened during this Reporting Year No. of Screening
Events During This
Reporting Year
Outfalls with Significant NonStormwater Discharges12 Total Confirmed Total Abated Total Attributed to Allowable Sources13 Total Being Monitored Machado Lake 0 0
Continuous
flow
monitoring*
0 NA NA 0
LA Harbor 0 0 0 0 NA NA 0
Santa Monica Bay 0 0 0 0 NA NA 0
Total 0** 0 0 0 NA NA 0
* Sepulveda Canyon continuous flow monitoring documents the absence of non-stormwater flow from Rolling Hills to the MS4, however it is not an MS4 outfall. **There are no major outfalls located within the City of Rolling Hills identified in the Peninsula CIMP Non-Stormwater Outfall Screening and Monitoring program.

Method of Abatement Total No.

Low Flow Diversion (LFD) N/A
Illicit Discharges Eliminated N/A
NPDES Permitted N/A
Retention N/A
Discharge No Longer Observed N/A
Other (describe in Section 5.3) NA
12 “Significant Non-Stormwater Discharges” as identified by the Permittee per Part VII.B of the Attachment E - MRP.
13 “Allowable Sources” refers to the discharges exempt from the Prohibition of Non-Stormwater Discharges listed in Part III.A.2 of the Order.

City of Rolling Hills
Reporting Year 2024-25
12 5.2 Los Angeles County Permittees: Did you consider dry weather receiving water monitoring data downstream of the outfalls and other relevant information to determine if re-screening is necessary for any of the previously screened outfalls that did not have significant nonstormwater discharge? If so, explain how many outfalls require re-screening and when rescreening will be completed. If applicable, describe any changes made to the program [Attachment E – VII.D.2].

5.3 Additional Information. If desired, provide additional information regarding Non-Stormwater Outfall Screening and Monitoring.

The Peninsula WMG regularly evaluates dry weather receiving water monitoring data in the Santa Monica Bay, Machado Lake, and the Los Angeles Harbor waters to which the group is tributary. The non-stormwater outfall-based screening and monitoring program was reassessed during the update of the CIMP required by the 2021 Regional MS4 Permit and rescreening was recommended in the LA Harbor watershed to further help understand the runoff characteristics and potential impact of NSW from Peninsula CIMP Area outfalls on Cabrillo Marina water quality. Results of the outfall screening conducted in the LA Harbor watershed is being reported with the PVP annual monitoring report. Analysis of dry weather receiving water monitoring during the reporting year is included in the Palos Verdes Peninsula Watershed Annual Monitoring Report.

The City of Rolling Hills Individual Non-Storm Water Screening and Monitoring Program conducted under the 2012 LA MS4 Permit (NSW Screening & Monitoring Program) has been incorporated into the Palos Verdes Peninsula CIMP Non-Stormwater Outfall Screening and Monitoring program consistent with LA Water Board staff direction and approval of the revised Peninsula CIMP on November 14, 2024. None of the canyon screening sites from the previous Rolling Hills Individual NSW Screening and Monitoring Program are considered to be MS4 outfalls, therefore they will only be screened for source tracking purposes from a downstream MS4 outfall, if necessary.

The City has been conducting flow monitoring in a representative natural drainage canyon, the largest tributary canyon within the Machado Lake Watershed area of the City. The Sepulveda Canyon flow monitoring has documented the absence of non-stormwater discharges to the MS4.

City of Rolling Hills
Reporting Year 2024-25
13 6. Minimum Control Measures [reporting period 3/12/22 – 6/30/22] Complete the following items in this section.

6.1 General Provisions [Order – VIII.A.3]
Did you train all your employees in targeted positions (whose interactions, jobs, and activities affect stormwater quality) on the requirements of the Minimum Control Measures in this Order, or did you ensure contractors performing privatized/contracted municipal services are appropriately trained to: (a) Promote a clear understanding of the potential for activities to pollute stormwater, (b) Identify opportunities to require, implement, and maintain appropriate BMPs in their line of work? (Yes or No)

6.2 Public Information and Participation Program [Order - VIII.D] Complete the following item regarding the Public Information and Participation Program.

6.2a) Summarize opportunities created for public engagement in stormwater planning and program implementation to raise public awareness of stormwater program benefits and needs (e.g., Don’t Trash California campaign). Note whether activities were performed by the jurisdiction or as part of a watershed, regional, or county-wide group [VIII.D.3.a].

Yes. Employees in targeted positions were trained during the reporting year, and privatized contract service providers were previously required to self-certify that their employees in targeted positions were trained.

The City distributes semi-monthly e-newsletters to all 679 households; these newsletters apprise residents of municipal activities and decision-making and opportunities for local engagement on environmental issues and pollution prevention activities.

The City engages its governing board, the City Council, and its residents through duly noticed agendas and public meetings, including most stormwater quality program and project decisions. During the reporting year, City Council heard items on fire brush clearance inspections, CalOES FEMA grant for hazard mitigation assistance, adoption of ordinance to designate fire severity zones in the City based on the Cal. Dept. of Forestry and Fire Protection maps, green waste communal bin events, Safe Clean Water Municipal Program expenditure planning, Harbor Toxics TMDL monitoring program cost-sharing MOU, City Hall turf replacement project and rebates, and stormwater consulting and monitoring contract renewals.

The City’s Safe Clean Water Municipal Program funds are programmed through an Annual Plan which is considered for approval by the City Council at a publicly noticed meeting. The final plan is also posted on the Safe, Clean Water Program website. The Safe Clean Water Program, funded by Measure W, engages the public on a county-wide, watershed, and jurisdictional level to raise awareness of the need for and engagement in planning and implementation of projects and programs to improve water quality. The City lies within the South Santa Monica Bay Watershed and is represented at that Watershed Area Steering Committee by the Palos Verdes Peninsula Watershed Management Group representative to that body.

City of Rolling Hills
Reporting Year 2024-25
14 6.2b) Summarize educational activities and public information activities to facilitate stormwater and non-stormwater pollution prevention and mitigation. What pollutants were targeted? What audiences were targeted? Note whether activities were performed by the jurisdiction or as part of a watershed, regional, or county-wide group [VIII.D.3.b].

The county-wide public awareness campaign Water for LA County [https://waterforla.lacounty.gov/] implemented by the County of Los Angeles aims to “transform LA County residents from passive water consumers to empowered and informed water advocates…”. The website provides a wealth of information, including a toolkit on how to become a water advocate. Water for LA partnered with Heal the Bay for its annual Coastal Cleanup Day to support the cleanup, raise awareness about stormwater pollution and provide attendees with information about how to make small changes to their water use to make a significant impact.

Educational materials and links to related websites are available for the City’s residents on the City’s website through its Environmental Programs page. This page is targeted at residents and pollutants of concern, including trash, nutrients (nitrogen and phosphorus), bacteria, sediment-born pollutants such as legacy toxics and PAHs, and metals.

Topics on this page include:
• Water Pollution Prevention (all pollutants)
• Water Conservation (non-stormwater runoff)
• Sustainable Gardening and Landscaping (nutrients, toxics) • Household Waste Management (trash, toxics)
• Wildfire Prevention (nutrients, toxics, metals, sediment-borne pollutants) • Trash Services (trash, nutrients, bacteria)
• Septic systems (OWTS) (nutrients, bacteria)
Examples of educational and public information and engagement activities promoted via articles included in the City’s bi-weekly newsletter during the reporting year included:
• Rainwater harvesting (nutrients, bacteria):
o Promotion of West Basin Rain Barrel Giveaway events
• Proper waste disposal, including paper shredding, green waste and e-waste collection/pickup events (trash, organic waste, nutrients and wildfire-mobilized storm-borne sedimentassociated pollutants) o Promotion of waste hauler events for collection of household e-waste, bulky items and paper shredding
o Outreach on proper disposal of unused medications
o Promotion of city-wide green waste chipping event, communal green waste bin events, and Christmas tree recycling

City of Rolling Hills
Reporting Year 2024-25
15 • Reminders and recommendations on wildfire safety and fuel abatement measures and events (wildfire-mobilized pollutants including storm-borne sediment-associated pollutants) • Tips on water conservation
• Updates on the conversion of City Hall landscaping conversion from turf to native, drought tolerant landscaping with drip irrigation
The City, along with the Palos Verdes Peninsula Watershed Management Group (Peninsula WMG), continued to implement a customized, collaborative Public Information and Participation Program (PIPP). This customized PIPP targets the Peninsula WMG’s highest water quality priorities (nutrients, sediment-born legacy pollutants, PAHs, metals and trash) and takes advantage of multiple modes of dissemination, such as the distribution of print materials at public offices and community events and through social media and web-based platforms, to more effectively reach Peninsula residents. This customized strategy includes the development of educational materials promoting behavioral change in the residential community for activities that are a source of targeted pollutants of concern and encourages retention of stormwater on individual properties which reduces the discharge of all types of stormwater associated pollutants. A discussion of joint outreach/education efforts that occurred during the reporting period is included in the Peninsula WMG's Semi-Annual Watershed Progress Reports and included the update of the Sustainable Pest Management webpage as well as development of an e-newsletter piece promoting Sustainable Pest Management and linking to the new webpage. Metrics from this joint outreach are included in Section 6.2f below.

The City leverages the county-wide Environmental Defenders and Generation Earth programs to meet the requirement to educate school children in K-5 on stormwater pollution prevention. The Environmental Defenders Rock the Planet – You Can Change the World Tour is a 30-minute, highenergy assembly program that is offered free to all elementary schools in Los Angeles County, including the Palos Verdes Peninsula Unified School District schools attended by children living in Rolling Hills. Teachers or administrators can schedule the virtual assembly online at http://dpw.lacounty.gov/epd/defenders/schedule.asp. and download free lesson plans for educators and families to utilize at home or through remote learning.

The county-wide Generation Earth program is an environmental education program that provides training and support to secondary school teachers and students at public and private schools within Los Angeles County. The program offers tools and techniques for service-learning projects that meet state curriculum standards. These activities and publications are available for educators to download for free at http://dpw.lacounty.gov/epd/ge/ProjectResources.aspx. The water pollution prevention toolkit explores the water pollution potential on a typical campus and guides students in conducting a water audit of the campus and choosing from a variety of options to reduce water waste and pollution.

Generation Earth also offers interactive virtual workshops that address environmental topics and project ideas at school and at home.

The City is also a member of the South Bay Cities Council of Governments which, through its South Bay Environmental Services Center (SBESC), circulates numerous public service announcements (PSAs) via e-mail blasts to residents and businesses regarding opportunities to learn and become actively involved in water conservation and stormwater pollution prevention. Examples of events that were promoted over the past reporting year include:

City of Rolling Hills
Reporting Year 2024-25
16 6.2c) In selecting targeted pollutants for public information/education topics, did you consider the proper management and disposal of (1) vehicle wastes (e.g., used oil, used tires); (2) household waste materials (i.e., trash and household hazardous waste, including personal care products, pharmaceuticals, and household cleaners); (3) pesticides, herbicides, and fertilizers; (4) green waste; and (5) animal wastes? (Yes or No) If no, what other materials were considered? [VIII.D.3.b.i]

6.2d) Which of the following methods were selected to distribute public information/ educational materials? [VIII.D.3.b.ii]
• Water Replenishment District’s workshop series with two (2) Eco Gardener workshops, three (3) edible gardening workshops, and classes covering sustainable landscape design and small space gardening.
• West Basin MWD Workshops, Classes and Virtual Events, including:
o Edward C. Little Water Recycling Facility tours in El Segundo o Water Harvest Festival
o Six (6) Rain Barrel Giveaway events
o Two (2) Firescaping Workshops
o Three (3) Know Your H20 Classes
• Metropolitan Water District Turf Removal and Garden Transformation classes • Ports of LA High School Green Festival
West Basin MWD's Rain Barrel Distribution and Rebate Programs engage and educate the community through active participation in stormwater capture. These classes are envisioned as steppingstones to more significant residential stormwater capture retrofit projects such as downspout diversion into cisterns or rain gardens. West Basin MWD’s free rain barrel program offers home delivery or pickup of rain barrels for residents. The program includes a 50-gallon capacity barrel equipped with overflow spout, built-in mosquito screen along with a rain gutter downspout flex arm hose connector. During the reporting year, West Basin continued its outreach campaign which includes digital flyers in English and Spanish advertising rain barrel delivery and pickup events as well as a short video touting the benefits of rain barrels and advertising delivery and pickup events. The Metropolitan Water District of Southern California (MWD) also offers a $75 rebate to residents within the City who purchase their own barrels.

Yes.

City of Rolling Hills
Reporting Year 2024-25
17 Category Yes No
Internet-based platforms (e.g., stormwater websites,
social media websites and applications) ☒ ☐
Commercial points-of-purchase (e.g., automotive parts
stores, home improvement centers/ hardware stores/
paint stores, landscape / gardening centers, pet shops) ☐ ☒
Schools (K- 12) ☒ ☐
Radio/television ☐ ☒
Community events ☒ ☐
Other (specify) newsletters to residents ☒ ☐

6.2e) Did you document and track information on the implemented Public Information and Participation activities including activity, date(s), method of dissemination, targeted behavior, targeted pollutant, targeted audience, culturally effective method(s), other information necessary for the metrics identified in Part VIII.D.4.a of the Order, and metric for measuring effectiveness? (Yes or No) [VIII.D.4.b]

6.2f) What metrics did you use to measure the effectiveness in achieving the objectives of the Public Information and Participation Program? Considering those metrics, is your Public Information and Participation program effective? Explain [VIII.D.4.a].

The following metrics for the Public Information and Participation Program were tracked:
• Number of City Council meetings with stormwater items on the agenda: 2 • Number of City Council meetings with wildfire prevention items on the agenda: 5 • Number of Blue Newsletter articles on proper waste disposal: 7 with a circulation of 679 households = 4,753 household reaches
• Tonnage of recyclables recovered by Franchise and non-franchise waste hauler: 1.32 • Number of Blue Newsletter articles on green waste disposal/recycling: 17 with a circulation of 679 households = 11,543 household reaches • Tonnage of green and organic waste recovered by Franchise and non-franchise waste hauler: 83.74
• Number of articles in the City’s Blue Newsletter on stormwater and environmental program: 1 article, with a circulation of 679 households = 679 household reaches • Number of Blue Newsletter articles on rainwater harvesting: 6 with a circulation of 679 households = 4,074 household reaches
• Number of Blue Newsletter articles on firescaping or brush control: 10 with a circulation of 679 households = 6,790 household reaches
• Number of City households participating in West Basin Rain Barrel Giveaways: 18 • Number of Rain Barrels distributed to City residences: 30 Yes.

City of Rolling Hills
Reporting Year 2024-25
18 • Number of regional (South Santa Monica Bay WASC) meetings on stormwater program benefits and needs: 8
• Participants in Annual Coastal Cleanup day (County-wide): 6,983 • Pounds of trash collected during Annual Coastal Cleanup day (County-wide): 18,296 • Number of regional events and workshops on water conservation (West Basin and MWD): 20 held by Water Reclamation Districts, West Basin and Metropolitan Water District
• Number of regional firescaping workshops: 2
In addition, the following metrics were tracked for the joint outreach on Sustainable Landscapes and Gardens and Pest Management conducted during the reporting year:
• Number of pageviews of Beach Cities and PVP WMG jointly developed webpages hosted by the South Bay Cities Council of Governments on their website:
o Environmentally Friendly Landscaping, Gardening and Pest Control (landing page): 540
o Sustainable Pest Management: 543
o Sustainable Landscaping and Gardening: 906
o South Bay Demonstration Gardens: 17
o Rainwater Harvesting: 568
The impressions generated by the City's Blue Newsletter appear to be the most effective means of engagement and outreach to the City's residents. The high numbers of HHW and organics collected from residents indicates that outreach/promotion of the City's waste collection services via its Blue Newsletter is effective. In addition, metrics from WMG joint outreach program indicated that for FY2024-25 webpage views of the SBCCOG-hosted Sustainable Landscapes & Gardens and Rainwater Harvesting webpages increased between ~1.75-4x over FY2324 views, with the exception of the South Bay Demonstration Gardens page, which indicates that the outreach efforts to drives traffic to these webpages is successful.

6.2g) Additional Information. If desired, provide additional information regarding implementation of the Public Information and Participation Program.

6.3 Industrial and Commercial Facilities Program [Order – VIII.E] Complete the following items regarding the Industrial and Commercial Facilities Program.

6.3a) Watershed-Based Inventory:

City of Rolling Hills
Reporting Year 2024-25
19 Question Yes No
Have you updated your watershed-based inventory or database of all industrial and commercial facilities within your jurisdiction that are critical sources14 of stormwater pollution identified in Part VIII.E.2 of the Order (inventory shall be updated at least once every 2 years)? ☐ ☐

6.3b) If you answered yes to question 6.3a above, what is the total number of facilities in your inventory list?

6.3c) If you answered no to question 6.3a above, when will you update the inventory list?

6.3d) Commercial Facilities [VIII.E.3]:

Question Response
In implementing the Outreach Program, how many
commercial facilities did you reach out to during this
reporting year?
Not Applicable
In implementing the Business Assistance Program, how
many commercial facilities did you assist during this
reporting year?
Not Applicable
How many commercial facilities did you inspect during this reporting year?
Not Applicable
Of the commercial facilities inspected during this reporting year, how many were the first, second, third, etc. round of inspections? For example, report x number of first-round inspections, y number of second-round inspections, z
number of third-round inspections, etc. Each round of
inspections corresponds to the requirement to conduct an inspection every two years.

Not Applicable
How many of the total commercial facility inspections had stormwater violation(s) during this reporting year? Not Applicable 14 Part VIII.E.2.a of the Regional MS4 Permit summarizes “critical sources” to be tracked.

Not applicable.

Not applicable.

City of Rolling Hills
Reporting Year 2024-25
20 6.3e) Industrial Facilities [VIII.E.4]:

Question Response
How many facilities from question 6.3b are industrial facilities with SIC codes that require enrollment in the IGP? (in this reporting year)? Not Applicable
How many industrial facilities did you report to the Los Angeles Water Board as non-filers during this reporting year?
Not Applicable
In implementing the Business Assistance Program, how many industrial facilities did you assist during this reporting year?
Not Applicable
How many Industrial facilities did you inspect during this reporting year? Not Applicable Of the commercial facilities inspected during this reporting year, how many were the first, second, third, etc. round of inspections? For example, report x number of first-round, y number of second-round, and z number of third-round, etc. Each round of inspections corresponds to the requirement to conduct an inspection every two years.

Not Applicable
How many of the total industrial facility inspections had stormwater violation(s) during this reporting year?
Not Applicable

6.3f) Enforcement Actions: Describe the number and nature of any enforcement actions taken related to the industrial and commercial facilities program [VIII.E.6].

Not Applicable

6.3g) Additional Information. If desired, provide additional information regarding implementation of the Industrial and Commercial Facilities Program.

There are no industrial or commercial facilities under the City’s jurisdiction.

6.4 Planning and Land Development Program [VIII.F]
Complete the following items regarding the Planning and Land Development Program.

6.4a) Priority Development Projects: Complete the table below for Priority Development Projects as of the end of this Reporting Year [VIII.F.1].

City of Rolling Hills
Reporting Year 2024-25
21 Development
Type
Number of Priority
Development Projects
Completed During This
Reporting Year
Number of Priority
Development
Projects InProgress
New
Development 1* 2
Redevelopment 0 2

6.4b) Use of Alternative Compliance Measures for Priority Development Projects. Provide the number of Priority Development Projects completed during this Reporting Year that utilized alternative compliance measures per Part VIII.F.4.b of the Order.

Category Number of Projects
On-site Biofiltration 1*
On-site Flow-based BMPs 0
Off-site Infiltration 0
Groundwater Replenishment Projects 0
Off-site Retrofit Projects 0
Other 0
*One new development project was completed in January 2023, however, was not previously reported and thus is being included in this report.

6.4c) Exemptions to Priority Development Project Performance Requirements. If the Permittee is implementing an approved Local Ordinance Equivalence or an approved Regional Stormwater Mitigation Program per Part VIII.F.1.c, describe the area covered by these exemptions; and the number and names of Priority Development Projects that were exempted from the Order’s Priority Development Project Structural BMP Performance Requirements.

Not applicable.

6.4d) Priority Development Project Greater Than 50 Acres. If applicable, provide information on any Priority Development Projects with a project area greater than 50 acres that were completed during this Reporting Year or are currently in-progress. Information should include the name and location of the project(s) and whether the project(s) are new development or redevelopment.

None

6.4e) Hydromodification Management: If applicable, provide information on the name, location, and nature of any projects requiring hydromodification controls that were completed or in-progress within this Reporting Year [VI.F.2].

City of Rolling Hills
Reporting Year 2024-25
22 6.4f) Exemptions to Hydromodification Controls: Are there any areas where assessments of downstream channel conditions and proposed discharge hydrology indicate that adverse hydromodification effects to beneficial uses of Natural Drainage Systems are unlikely, per Part VIII.F.2.b? If so, what are the numbers and names of the New Development and Redevelopment projects exempt from implementation of hydromodification controls?
No.

6.4g) Tracking, Inspection and Enforcement of Post-Construction BMPs: Describe the number and nature of any enforcement actions taken related to the planning and land development program [VIII.F.3.c.v].

Question Yes No
Does your program implement a GIS or other electronic system for tracking Priority Development Projects and Hydromodification Management Projects that at a minimum contains all the information required by Permit? ☒ ☐
Does your program inspect all Priority Development Projects and Hydromodification Management Projects upon completion of construction and prior to issuance of occupancy certifications to ensure proper installation of post-construction BMPs?
☒ ☐
Rolling Hill’s updated 2022 stormwater ordinance (RHMC Chapter 8.32.5(a)ii) requires that any project disturbing more than 1 acre of land must meet full hydromodification requirements, with no exceptions for LID on single-family residential projects of more than one acre. This more stringent requirement applies to new and redevelopment projects submitted for review beginning in January 2023. Two (2) in-progress projects were subject to the hydromodification requirements during the reporting year.

City of Rolling Hills
Reporting Year 2024-25
23 6.4h) Additional Information. If desired, provide additional information regarding implementation of the Planning and Land Development Program.

6.5 Construction Program [Order – VIII.G]
Complete the following items regarding the Construction Program.

6.5a) Complete the table below. Only report numbers for sites less than 1 acre.

Question Response
How many new sites of less than one acre commenced their activities during this reporting year?
0 How many sites of less than one acre did you inspect during this reporting year? 2
There were no enforcement actions taken related to the Planning and Land Development Program during the reporting year. If LID components are not installed per plan, the building/construction permit would not be finalized until the issue is addressed.

By design, the City is a model of low-impact development utilizing nature-based solutions for management of stormwater. A substantial area of land in Rolling Hills is constrained from development due to steep hillsides and canyons; the use of these areas as wildlife habitats and native vegetation is emphasized. Rolling Hills’ zoning code further promotes the preservation and appreciation of open space by requiring easements for equestrian/hiking trails on all lots.

There are approximately 30 miles of unpaved equestrian/hiking trails throughout the City.

Roads within the City have many green street features. They are designed as narrow, two-lane undivided winding roads 20 to 25 feet wide with rolling to steep grades lined with significant naturalized landscaping. There are no sidewalks or curb-and-gutter systems, and roads are not designed to be stormwater conveyance systems.

The City’s Zoning Ordinance contains strict standards for development ratios on each property.

Only 40% of the net area of a lot may be disturbed for construction, and the remaining area of the lot must remain in its natural state. Only 35% of the net lot area may be developed with impervious surfaces, including structures, patios and other paved areas. Driveways may not cover more than 20% of the area of the yard in which they are located. Uncovered motor courts/parking pads may not cover more than 10% of the yard in which they are located. Horse stable access-ways may not be entirely paved, and use of 100% gravel or decomposed granite is encouraged. The City has developed a guide for construction of stables on residential properties which includes consideration of proximity to blue line streams and natural drainage courses so as not to negatively affect stormwater quality in the siting of stables, horse wash stations, and manure storage. Tennis and sports courts are encouraged to have pervious surfaces as well. Stormwater run-off that is not contained on properties is conveyed through the City via natural, heavily vegetated, soft bottom drainage courses/canyons, providing ample opportunity for runoff to infiltrate. Installation of cisterns and biofiltration devices are encouraged on projects even when they are not required.

City of Rolling Hills
Reporting Year 2024-25
24 Question Response
How many (if any) of the sites from the previous question had a BMP violation [VIII.G.4.b]? 0

6.5b) Complete the table below. Only report numbers for sites 1 acre or greater and construction sites less than 1 acre that are part of a common plan of development totaling 1 acre or greater.

Question Response
What is the date of the latest update made to the site inventory [VIII.G.5.b]? June 2025 How many new sites of 1 acre or greater commenced their activities during this reporting year? 1
How many sites of 1 acre or greater did you report to the Los Angeles Water Board as non-filers [VIII.G.5.a]? 0
How many post-construction plans were reviewed during this reporting year [VIII.G.5.a]? 1
How many of the plans from the previous question were approved during this reporting year? 1
How many (if any) sites of 1 acre or greater did you inspect during this reporting year [VIII.G.5.c]?
2 How many (if any) of the inspected sites were in violation of construction BMPs? 0 How many (if any) of the inspected sites were in violation of post-construction plans? 0
How many of the sites from the previous two questions were reported to the Los Angeles Water Board along with an inspection report? 0

6.5c) Enforcement Actions: Describe the number and nature of any enforcement actions taken related to the development construction program [VIII.G.6].

For sites with BMP violations, a “blue notice” was issued, requiring that all work be stopped and the appropriate BMP violations be addressed before work could resume. Also, a “green notice” may be provided for stockpiling that does not follow the approved Erosion Sediment Control Plan (ESCP).

The City’s code enforcement officer provides additional outreach and oversight of construction sites beyond that provided by contract Building & Safety inspectors. During the reporting year, two code enforcement cases were opened and actions taken related to unpermitted construction. Two (2) additional cases that were opened in previous years remained open during the reporting year. One case was forwarded to the City Attorney and City staff is working with the other three (3) residents to obtain the appropriate permits.

City of Rolling Hills
Reporting Year 2024-25
25 6.5d) Additional Information. If desired, provide additional information regarding implementation of the Construction Program.

6.6 Public Agency Activities Program [VIII.H]
Complete the following items regarding the Public Agency Activities Program.

6.6a) Answer the following questions regarding the Public Agency Activities Program.

Question Response
Did you maintain an updated inventory or database of all your owned or operated (i.e., public) facilities and activities within your jurisdiction that are potential sources of stormwater pollution? [VIII.H.2]
☒ Yes
☐ No
For the above inventory, what is the date of the latest update [VIII.H.2.c]? 7/24/2023 How many treatment control BMPs including post-construction control treatment BMPs do you own? [VIII.H.2.b.vi]
0 For the above, how many inspections were conducted during this reporting year? [VIII.H.3.e]
N/A
How many storm drain inlets do you own? 0
How many of the above are labeled with a legible “no dumping” message? [VIII.H.6.c.i]
N/A
Did you inspect the legibility of all the stencils or labels nearest each inlet prior to the wet season during this reporting year? [VIII.H.6.c.ii] *The City does not own MS4 infrastructure, however it recently assumed responsibility for the maintenance of five (5) catch basins along Middleridge Rd. via an agreement with LA County Flood Control District (owner). ☒ Yes
☐
During the plan checking and/or permit issuance stage, plan checkers require that applicable MS4 Permit and Construction General Permit (CGP) requirements are met and that BMPs for construction activities are incorporated into the development plans. The contract building officials require that developers sign a Statement of Understanding Pertaining to BMPs and NPDES Requirements. For any project involving a grading or excavation permit regardless of size, a pre-construction meeting is held between City staff, RHCA staff, the building inspector, the property owner and the contractor and subcontractor to discuss construction BMP requirements and ensure that responsibility for implementing the BMPs is clear. During this meeting, a Construction BMP Brochure is provided to contractors of sites under one (1) acre to inform them of the required minimum BMPs.

Extra protection during construction is required for projects adjacent to environmentally sensitive areas and, in some cases, a biologist monitors the project and adjacent environmentally sensitive area during construction to ensure that proper protections are maintained.

City of Rolling Hills
Reporting Year 2024-25
26 Question Response
If yes for the above, how many illegible stencils and labels were recorded? 0 For the illegible stencils and labels recorded above, how many were restenciled and re-labeled within 180 days of inspection? For those not restenciled and re-labeled, explain why not. [VIII.H.6.c.iii] NA
Did you visually monitor owned open channels and other drainage structures for trash and debris at least annually? [VIII.H.6.d.i]
*other drainage structures in City Hall Parking lot
☒ Yes*
☐ No
How many miles of open channels do you own? 0
Did you remove trash and debris from your open channels a minimum of once per year before the wet season? [VIII.H.6.d.ii]
☐ Yes
☒ No- City
does not own
open channels
How many parking lots exposed to stormwater do you own that meet either criteria listed in Part VIII.H.9?
1 Did you inspect Permittee-owned parking lots exposed to stormwater that meet either criteria listed in Part VIII.H.9 at least twice per month? ☒ Yes
☐ No
For the above, how many inspections were conducted during this reporting year? [VIII.H.9]
52 For the owned parking lots exposed to stormwater, how many cleanings were conducted in total for this reporting year? [VIII.H.9]
52 6.6b) Street Sweeping: Complete the table below [VIII.H.8].

Total Miles of
Street15 in Priority
Category
Frequency of Street
Sweeping (e.g., Twice a
Month, Monthly,
Annually)
Additional Notes
Priority A Not applicable City does not own streets
Priority B Not applicable City does not own streets
Priority C Not applicable City does not own streets

6.7 Illicit Discharge Detection and Elimination (IDDE) Program [Order – VIII.I] Complete the following items regarding the Illicit Discharge Detection and Elimination Program.
15 Permittees shall report the length of street swept in the “total miles of street” and/or “total curb miles of street”, depending on data availability.

City of Rolling Hills
Reporting Year 2024-25
27 6.7a) IDDE Investigations: Complete the table below. Include illicit discharges detected through other inspection programs.

Number of
Reported
Illicit
Discharges
Number of
Investigations
Number
Eliminated
Number
Permitted or
Exempt
If Not
Eliminated or
Permitted /
Exempt,
Explain.

Illicit
Discharges
6 6 4 0 See 6.7b below

6.7b) Enforcement Actions: Describe the number and nature of any enforcement actions taken related to illicit discharge detection and elimination program [Order – VIII.I.7].

6.7c) What means were provided to the public for public reporting of illicit discharges and other water quality impacts from stormwater and non-stormwater discharges into or from MS4s? [VIII.I.6]
Category Yes No
Telephone hotline ☒ ☐
Email address ☐ ☐
Web-based form / reporting portal ☒ ☐
Other (specify) ☐ ☐

6.7d) Did you document all public reports of illicit discharges and track all investigations? If no, explain why. [Order – VIII.I.8]

6.7e) Additional Information. If desired, provide additional information regarding implementation of the Illicit Discharge Detection and Elimination Program.

During the reporting year, code enforcement staff responded to six (6) complaints of illicit discharges. One (1) notice of violation was issued. Four of the cases were resolved and closed during the reporting year. Two (2) of these cases remained open at the close of the reporting year; of these remaining open cases: one illicit discharge case was closed shortly after the reporting year (August 2025), while the code enforcement officer is working on a final notice to abate for the other case which is related to debris nuisance at a residence.

Yes
The City’s Illicit Discharge Detection & Elimination Program (IDDE Program) is focused on elimination of illicit discharges into the City’s natural drainage courses.

City of Rolling Hills
Reporting Year 2024-25
28 7. Trash Reporting
Complete the following items in this section.

7.1 Trash TMDL Compliance [Order – IV.B.3]

7.1a) If you are subject to Trash TMDLs, complete and attach the provided “Trash TMDL Reporting Forms” in Attachment I of the Order for each applicable Trash TMDL. Report your compliance with the applicable interim and/or final Effluent Limits for trash below. If compliance with the applicable interim and/or final Effluent Limits for trash has not been achieved, explain why.

The City is in compliance with the final effluent limits in the Machado Lake Trash TMDL and the Santa Monica Bay Debris TMDL through institutional controls and a modified MFAC program as described in its approved Trash Monitoring and Reporting Plan (TMRP). Results from this 15th year of monitoring found 1.28 gallons of trash collectively from the seven (7) canyon study areas, equating to 99.96% reduction of trash from the City's baseline allocation. See Attachment B Reporting Form for Machado Lake Trash TMDL and Attachment C Reporting Form for Santa Monica Bay Debris TMDL.

Both the Santa Monica Bay Debris TMDL and the Machado Lake Trash TMDL were reconsidered by the Regional Board on March 14, 2019. The Regional Board staff report for the reconsideration of these TMDLs accurately stated that the City has met the 100% reduction of trash from baseline waste load allocations. The City submitted a Revised Trash Monitoring and Reporting Plan (TMRP) for Machado Lake Trash and Santa Monica Bay Debris TMDLs on June 17, 2019, which proposed a reduction in monitoring frequency. On June 3, 2021, the City received a letter from the Regional Board Executive Officer granting a reduction in monitoring frequency from twice per year to once per year following the first major storm of the year.

7.1b) Mark the compliance approach you have implemented for any applicable Trash TMDLs.
☐ Full Capture Systems
☐ Mass Balance
☐ Scientifically Based Alternative
☒ Minimum Frequency of Assessment and Collection

7.1c) Complete the table below regarding the catch basins within your jurisdiction.

Retrofitted
with Full
Capture
Systems
Retrofitted
with Partial
Capture
Devices
Retrofitting
Infeasible
Not
Retrofitted
Total Number
of Catch
Basins within
Jurisdiction
Owned 0 0 NA 0 0
Not Owned 0 0 unknown 31 31
Total 0 0 unknown 31 31

City of Rolling Hills
Reporting Year 2024-25
29 7.1d) If relying on full capture systems, are the maintenance records of the full capture systems within your jurisdiction up-to-date and available for inspection by the Los Angeles Water Board? [Order – IV.B.3.b.i.(c)]
Not applicable.

7.1e) If implementing a Plastic Pellet Monitoring and Reporting Plan (PMRP), report any known spills (including names and locations) from preproduction plastic (i.e., plastic pellet) generating, transfer, processing, and storage facilities within this reporting year, explain the actions taken for cleanup, and describe the measures taken to prevent future incidents.

Not applicable. City is exempt from PMRP reporting requirements.

7.1f) If implementing a PMRP, how many new preproduction plastic generating, transfer, processing, and storage facilities have been added in Permittee’s jurisdiction within this reporting year that have not been addressed in the PMRP? Not applicable. City is exempt from PMRP reporting requirements.

7.2 Trash Discharge Prohibitions Compliance [Order – III.B]

7.2a) For areas not addressed by a Trash TMDL, and for Permittees that have regulatory authority over Priority Land Uses (PLUs) or Designated Land Uses, indicate the compliance method that was selected in response to the Los Angeles Water Board’s 13383 Order issued on August 18, 2017 as the method to comply with the prohibition of discharge in PLUs within Permittee’s jurisdiction.
☐ Track 1 (Complete items 7.2b – 7.2e)
☐ Track 2 (Complete items 7.2f – 7.2l)

7.2b)If using Track 1 compliance, complete the table below regarding the catch basins within PLUs, designated land uses, and equivalent alternate land uses in your jurisdiction.

The City does not own any catch basins. Review of LACFCD GIS maps indicated a total of 26 catch basins within trash TMDL areas of the City, with 19 identified as owned/maintained by LACFCD, and 7 attributed to the City that should be identified as private since they are owned/maintained by the private community association which also owns the roadways.

LACFCD GIS maps are missing an additional 5 catch basins on Middleridge Lane which are owned by LACFCD but were recently rebuilt by City and will be maintained by City per maintenance agreement. This brings the total count of non-owned catch basins to 31.

Retrofitting of catch basins within the City is not necessary to meet trash waste load allocations (WLAs) since the City has demonstrated attainment of trash WLAs via institutional controls and green infrastructure verified by MFAC monitoring.

City of Rolling Hills
Reporting Year 2024-25
30 Retrofitted with
Full Capture
Systems
Retrofitting
Infeasible
Not
Retrofitted
Total Number of
Catch Basins
within
Jurisdiction
Owned
Not Owned
Total
Not applicable. City is exempt because there are no PLUs within the City

7.2c) If using Track 1 compliance, complete and attach the “Trash Discharge Prohibitions Reporting Form” provided in Attachment I of the Order for PLUs, designated land uses, and equivalent alternate land uses within your jurisdiction.

Not applicable

7.2d) If using Track 1 compliance, provide a map showing the location and drainage area in PLUs, designated land uses, and equivalent alternate land uses within your jurisdiction served by full capture systems.

Not applicable

7.2e) If using Track 1 compliance, did you properly operate and maintain all full capture systems in PLUs, designated land uses, and equivalent alternate land uses within your jurisdiction? Not applicable

7.2f) If using Track 2 compliance, complete the table below regarding the catch basins within PLUs, designated land uses, and equivalent alternate land uses in your jurisdiction.

Retrofitted with
Full Capture
Systems
Retrofitted with
Partial Capture
Devices
Not
Retrofitted
Total Number of
Catch Basins
within
Jurisdiction
Owned
Not Owned
Total
Not applicable

7.2g) If using Track 2 compliance, provide a map of the location and drainage area in PLUs, designated land uses, and equivalent alternate land uses within your jurisdiction served by full capture systems, multi-benefit projects, other treatment controls, and/or institutional controls.

City of Rolling Hills
Reporting Year 2024-25
31 Not applicable

7.2h) If using Track 2 compliance, did you properly operate and maintain all full capture systems, multi-benefit projects, treatment controls, and/or institutional controls in PLUs, designated land uses, and equivalent alternate land uses within your jurisdiction? Not applicable

7.2i)If using Track 2 compliance, explain what type of and how many treatment controls, institutional controls, and/or multi-benefit projects have been used and in what locations? Not applicable

7.2j) If using Track 2 compliance, what is the effectiveness of the total combination of treatment controls, institutional controls, and multi-benefit projects employed? Explain the metric to measure the effectiveness.

Not applicable

7.2k) If using Track 2 compliance, explain whether the amount of trash discharged from the MS4 decreased from the previous year. If so, by how much? If not, explain why. To determine the amount of trash discharged from the MS4 and to report on progress towards achieving the interim/ final compliance, provide the results of the trash levels using the methodology identified in the Trash Implementation Plan (e.g., Visual Trash Assessment Approach or other equivalent trash assessment methodology).

Not applicable

7.2l) If using Track 2 compliance, explain whether the amount of trash in the MS4’s receiving water(s) decreased from the previous year. If so, by how much? If not, explain why.

Not applicable

8. Additional Information (Optional)
Provide any additional information in this section.

You may use this section to report any additional information not specified in Sections 2-7 such as information better presented outside of the report form structure, data limitations that prevented the required information from being obtained, and additional detailed summary table describing control measures.

City of Rolling Hills
Reporting Year 2024-25
32 The City participates in the Palos Verdes Peninsula WMP as an 85th%, 24-hr retention area with the condition that Sepulveda Canyon continuous flow monitoring continue. Attachment D presents 24-hour rainfall depth, event flow volume, and cumulative flow volume measured in Sepulveda Canyon during the reporting year. The total rainfall recorded at the Rolling Hills Fire Station rain gauge during the reporting year was 7.07 inches with one (1) rain event greater than or equal to the 85th% 24-hour storm event. Importantly, there were zero (0) days with measured flow when rainfall totals were less than the 85th% 24-hour storm event over the course of 15 rain days with more than 0.1 inches of rainfall.

Note: Due to equipment malfunction, data is not available between August 24, 2024 through October 2, 2024, November 23, 2024 through November 24, 2024, and after April 29, 2025.

Although there was one (1) day of rainfall with greater than 0.1 inches recorded during the periods with no available flow data, it was less than the 85th% 24-hour storm event.

City Hall Landscape Upgrades:

On March 25, 2024, City Council received a presentation from staff regarding the status and need for landscaping and irrigation services necessary to improve and update the City Hall campus. City Council was also apprised of the City's eligibility for Cal Water's Lawn-to-Garden rebate program in the amount of $48,897 and received a landscape design plan with proposed plant palettes from a locally renowned landscape architect skilled in selection of drought tolerant and native plants, who was retained by the City’s landscape maintenance contractor.

The landscape design plan is consistent with the requirements of Cal Water’s Lawn-to-Garden program. On April 8, 2024, the City Council approved the acceptance of Cal Water's 2024 Lawnto-Garden Rebate for implementing refreshed water wise planting and irrigation in and around City Hall campus with the goal of removing high-water use surfaces areas and converting to CA-friendly, drought-tolerant plant materials. The new design is meant to comply with Home Hardening requirements and to serve as an example to the greater community. The project was completed October 2024.

ATTACHMENT A
City Attorney Statement of Legal Authority

65277.00004\44276252.3

Nicolas Papajohn
Of Counsel
(949) 263-2619
[email protected]
Best Best & Krieger LLP | 18101 Von Karman Avenue, Suite 1000, Irvine, California 92612 Phone: (949) 263-2600 | Fax: (949) 260-0972 | bbklaw.com File No. 65277.00004
October 15, 2025

VIA E-MAIL
Susana Arredondo
Executive Officer
California Regional Water Quality Control Board
Los Angeles Region
320 West 4th Street, Suite 200
Los Angeles, CA 90013-1105
[[email protected]]
Re: Certification of Legal Authority of the City of Rolling Hills to Implement and Enforce the Requirements of 40 C.F.R. § 122.26(d)(2)(i)(A-F) and Order No. R4-2021-0105 NPDES Permit CAS004004
Dear Ms. Arredondo:

The City of Rolling Hills ("City"), by and through its City Attorney, hereby submits the following certification ("Statement"), pursuant to Section VI.B.1-B.2., of the MS4 Permit for Los Angeles County, Order No. R4-2021-0105 (NPDES Permit No. CAS004004), issued by the California Regional Water Quality Control Board, Los Angeles Region ("RWQCB"), entitled "Waste Discharge Requirements and National Permit Discharge Elimination System (NPDES) Permit for Municipal Separate Storm Sewer System ("MS4") Discharges within the Coastal Watersheds of Los Angeles and Ventura Counties" ("Permit").

The City is one of the co-permittees under the Permit. Section VI.B.1-B.2., of the Permit requires:

Each Permittee must submit a statement certified by its chief legal counsel that the Permittee has the legal authority within its jurisdiction to implement and enforce each of the requirements contained in 40 CFR § 122.26(d)(2)(i)(A-F) and this Order. Each Permittee shall submit this certification annually as part of its Annual Report beginning with the first Annual Report required under this Order. These statements must include:
i. Citation of applicable municipal ordinances or other appropriate legal authorities and their relationship to the requirements of 40 CFR § 122.26(d)(2)(i)(A)-(F) and of this Order; and

65277.00004\44276252.3

VIA E-MAIL
Susana Arredondo
October 15, 2025

Best Best & Krieger LLP
ii. Identification of the local administrative and legal procedures available to mandate compliance with applicable municipal ordinances identified in subsection (i) above and therefore with the conditions of this Order, and a statement as to whether enforcement actions can be completed administratively or whether they must be commenced and completed in the judicial system.

The purpose of this Statement is to describe the City's compliance with Section VI.B.1- B.2. As discussed in further detail herein, it is my opinion that the City has the necessary legal authority to implement the Permit and to control and prohibit discharges of pollutants into the Municipal Separate Storm Sewer System ("MS4"). However, this Statement is not, nor should it be construed as, a waiver of any rights that the City may have relating to the Permit.

1. Legal Authority Statement
We have reviewed the City's applicable ordinances in conjunction with this statement. In our opinion, the City has the necessary legal authority to comply with the legal requirements imposed upon it under the Permit, consistent with the requirements set forth in the U.S.

Environmental Protection Agency's regulations promulgated under the Clean Water Act, and, specifically, 40 C.F.R. § 122.26(d)(2)(i)(A-F), and to the extent permitted by state and federal law and subject to the limitations on municipal action under the California and United States Constitutions, except as noted herein.

The City, as a general law city, has broad general police powers under the California Constitution to enact legislation for health and public welfare of the community to the extent not preempted by federal or state law. The primary source of the City’s authority is Article 11, § 7 of the California Constitution. The City also has authority under § 13002 of the California Water Code to adopt and enforce ordinances conditioning, restricting and limiting activities which might degrade the quality of waters of the State. In addition, the City adopted ordinances for the purpose of ensuring that it has adequate legal authority to implement and enforce its storm water control program. The City has the authority under the California Constitution and state law to enact and enforce these ordinances, and these ordinances were duly enacted.

2. Ordinances
The City has adopted ordinances related to the regulation of urban runoff to control and prohibit discharges of pollutants into the MS4 and to comply with the requirements of the Permit applicable to it including Section IX.B.5., as well as, to the extent applicable, 40 C.F.R. § 122.26 (d)(2)(i)(A)-(F). The City's Storm Water Management and Pollution Control Ordinance (Chapter

8.32 of Title 8 of the Rolling Hills Municipal Code ("RHMC")) is the principal City ordinance addressing the control of urban runoff. Under this ordinance, the City has the necessary legal authority to do the following:

65277.00004\44276252.3

VIA E-MAIL
Susana Arredondo
October 15, 2025

Best Best & Krieger LLP
i. 40 C.F.R. § 122.26(d)(2)(i)(A); Permit Section VI.B.1.a.: Control the contribution of pollutants to its MS4 from storm water discharges associated with industrial and construction activity and control the quality of storm water discharged from industrial and construction sites.

This requirement applies both to industrial and construction sites with coverage under an NPDES permit, as well as to those sites that do not have coverage under an NPDES permit:

RHMC 8.32.060 – Prohibited Activities; RHMC 8.32.080 – Good Housekeeping Provisions; RHMC 8.32.090 – Requirements for Construction Activities; RHMC 8.32.095 – Planning and Land Development Program Requirements for New Development and Redevelopment Projects
ii. 40 C.F.R. § 122.26(d)(2)(i)(C); Permit Section VI.B.1.b.: Prohibit all non-storm water discharges through the MS4 to receiving waters not otherwise authorized or conditionally exempt pursuant to Part III.A:

RHMC 8.32.060 – Prohibited Activities; RHMC 8.32.070 – Exempted Discharges or Conditionally Exempted Discharges
iii. 40 C.F.R. § 122.26(d)(2)(i)(B); Permit Section VI.B.1.c.: Prohibit and eliminate illicit discharges and illicit connections to the MS4:

RHMC 8.32.060 – Prohibited Activities; RHMC 8.32.100 – Enforcement iv. 40 C.F.R. § 122.26(d)(2)(i)(C); Permit Section VI.B.1.d.: Control the discharge of spills, dumping, or disposal of materials other than storm water to its MS4:

RHMC 8.32.060 – Prohibited Activities; RHMC 8.32.080 – Good Housekeeping Provisions; RHMC 8.32.090 – Requirements for Construction Activities; RHMC 8.32.095 – Planning and Land Development Program Requirements for New Development and Redevelopment Projects; RHMC 8.38.080 – Requirements for Industrial/Commercial and Construction Activities; RHMC 8.38.090 – Enforcement
v. 40 C.F.R. § 122.26(d)(2)(i)(E); Permit Section VI.B.1.e.: Require compliance with conditions in Permittee ordinances, permits, contracts or orders (i.e., hold dischargers to its MS4 accountable for their contributions of pollutants and flows):

RHMC 8.32.100 - Enforcement; RHMC Chapter 1.08 – General Penalty vi. 40 C.F.R. § 122.26(d)(2)(i)(E)-(F); Permit Section VI.B.1.f.: Utilize enforcement mechanisms to require compliance with applicable ordinances, permits, contracts, or orders:

RHMC 8.32.100 – Enforcement; RHMC Chapter 1.08 – General Penalty

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vii. 40 C.F.R. § 122.26(d)(2)(i)(D); Permit Section VI.B.1.g.: Control the contribution of pollutants from one portion of the shared MS4 to another portion of the MS4 through interagency agreements among co-permittees:

In addition to the provisions of RHMC Chapter 8.32, which control the contribution of pollutants, the City, as a municipal corporation, has authority to enter into contracts that enable it to carry out its necessary functions, including the power to enter into interagency agreements to control the contribution of pollutants from one portion of the shared MS4 to another. viii. 40 C.F.R. § 122.26 (d)(2)(i)(D); Permit Section VI.B.1.h.: Control of the contribution of pollutants from one portion of the shared MS4 to another portion of the MS4 through interagency agreements with other owners of the MS4 such as the State of California Department of Transportation:

In addition to the provisions of RHMC Chapter 8.32, which control the contribution of pollutants, the City, as a municipal corporation, has authority to enter into contracts that enable it to carry out its necessary functions, including the power to enter into interagency agreements to control the contribution of pollutants from one portion of the shared MS4 to another. ix. 40 C.F.R. § 122.26(d)(2)(i)(F); Permit Section VI.B.1.i.: Carry out all inspections, surveillance, and monitoring procedures necessary to determine compliance and noncompliance with applicable municipal ordinances, permits, contracts and orders, and with the provisions of this Order, including the prohibition of non-storm water discharges into the MS4 and receiving waters. This means the Permittee must have authority to enter, monitor, inspect, take measurements, review and copy records, and require regular reports from entities discharging into its MS4:

RHMC 8.32.100.H
x. 40 C.F.R. § 122.26(d)(2)(i)(E); Permit Section VI.B.1.j.: Require the use of control measures to prevent or reduce the discharge of pollutants to achieve water quality standards/receiving water limitations:

Article 11, Section 7 of the California Constitution; California Public Resources Code Section 21000 et seq. (CEQA); RHMC 8.32.080 – Good Housekeeping Provisions; RHMC

8.32.090 – Requirements for Construction Activities; RHMC 8.32.095 – Planning and Land Development Program Requirements for New Development and Redevelopment Projects; RHMC Title 17 - Zoning
xi. 40 C.F.R. § 122.26(d)(2)(i)(E); Permit Section VI.B.1.k.: Require that structural Best Management Practices (BMPs) are properly operated and maintained:

Article 11, Section 7 of the California Constitution; California Public Resources Code Section 21000 et seq. (CEQA); RHMC 8.32.080 – Good Housekeeping Provisions; RHMC