Agenda packet, first session — Modesto City Council, August 9, 2022 (part 4 of 7)

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United States
557465 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 104.42 20-JUN-22 Modesto, CA 95354
United States
557475 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 83.65 20-JUN-22 Modesto, CA 95354
United States
557484 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 159.07 20-JUN-22 Modesto, CA 95354
United States
557517 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 68.43 20-JUN-22 CoM PRIMARY Report Date: 05-JUL-2022 12:13
Void Payment Register Page: 2
Include Zero Amount Payments: No Period From: 01-JUN-22 To: 30-JUN-22 Display Payee Address: Yes Date: Void Date
Bank: Bank of the West Branch: Main Branch Account: BoTW Main Acount AP Checks Bank Account Currency: USD Payment Currency: USD ( US Dollar ) Payment Number Date Payee Name Site Address Payment Amount Void Date --------------- --------- --------------------------- --------------- --------------------------------- ----------------- --------- Payment Document: CoM AP BoTW Check
557517 1010, 10th Street
Modesto, CA 95354
United States
557523 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 58.96 20-JUN-22 Modesto, CA 95354
United States
557531 03-DEC-21 CoM Utilities MODESTO 1010, 10th Street 57.18 20-JUN-22 Modesto, CA 95354
United States
557567 03-DEC-21 AT&T/MCI MAIN P O BOX 105068 967.80 20-JUN-22 ATLANTA, GA 30348
United States
557723 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354
United States
557726 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 54.00 20-JUN-22 MODESTO, CA 95354
United States
557727 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354
United States
557737 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354
United States
557738 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354

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United States
557743 10-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354
United States
557783 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 38.09 20-JUN-22 Modesto, CA 95354
United States
557791 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 31.62 20-JUN-22 Modesto, CA 95354
United States
557793 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 6.58 20-JUN-22 Modesto, CA 95354
United States
557796 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 10.88 20-JUN-22 Modesto, CA 95354
United States
557799 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 18.21 20-JUN-22 Modesto, CA 95354
United States
557807 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 47.13 20-JUN-22 Modesto, CA 95354
CoM PRIMARY Report Date: 05-JUL-2022 12:13
Void Payment Register Page: 3
Include Zero Amount Payments: No Period From: 01-JUN-22 To: 30-JUN-22 Display Payee Address: Yes Date: Void Date
Bank: Bank of the West Branch: Main Branch Account: BoTW Main Acount AP Checks Bank Account Currency: USD Payment Currency: USD ( US Dollar ) Payment Number Date Payee Name Site Address Payment Amount Void Date --------------- --------- --------------------------- --------------- --------------------------------- ----------------- --------- Payment Document: CoM AP BoTW Check
557807 1010, 10th Street
Modesto, CA 95354
United States
557808 10-DEC-21 CoM Utilities MODESTO 1010, 10th Street 40.83 20-JUN-22 Modesto, CA 95354
United States
558133 17-DEC-21 Harman, Michael OFFICE 0.01 20-JUN-22
558136 17-DEC-21 Nelson, Orrin B III OFFICE 40.00 20-JUN-22 558152 17-DEC-21 COM HDL MODESTO 1010 10TH STREET 62.75 20-JUN-22 MODESTO, CA 95354
United States
558164 17-DEC-21 COM HDL MODESTO 1010 10TH STREET 100.00 20-JUN-22 MODESTO, CA 95354
United States
558168 17-DEC-21 CoM Misc MODESTO 1010, 10th Street 125.00 20-JUN-22 Modesto, CA 95354

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United States
558193 17-DEC-21 CoM Utilities MODESTO 1010, 10th Street 27.87 20-JUN-22 Modesto, CA 95354
United States
558194 17-DEC-21 CoM Utilities MODESTO 1010, 10th Street 30.05 20-JUN-22 Modesto, CA 95354
United States
558197 17-DEC-21 CoM Utilities MODESTO 1010, 10th Street 6.99 20-JUN-22 Modesto, CA 95354
United States
558200 17-DEC-21 CoM Utilities MODESTO 1010, 10th Street 22.75 20-JUN-22 Modesto, CA 95354
United States
558398 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 39.39 20-JUN-22 Modesto, CA 95354
United States
558402 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 7.82 20-JUN-22 Modesto, CA 95354
United States
558403 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 28.10 20-JUN-22 Modesto, CA 95354
United States
558412 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 13.83 20-JUN-22 Modesto, CA 95354
United States
558413 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 5.36 20-JUN-22 Modesto, CA 95354
United States
558418 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 73.34 20-JUN-22 Modesto, CA 95354
United States
CoM PRIMARY Report Date: 05-JUL-2022 12:13
Void Payment Register Page: 4
Include Zero Amount Payments: No Period From: 01-JUN-22 To: 30-JUN-22 Display Payee Address: Yes Date: Void Date
Bank: Bank of the West Branch: Main Branch Account: BoTW Main Acount AP Checks Bank Account Currency: USD Payment Currency: USD ( US Dollar ) Payment Number Date Payee Name Site Address Payment Amount Void Date --------------- --------- --------------------------- --------------- --------------------------------- ----------------- --------- Payment Document: CoM AP BoTW Check
558425 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 22.42 20-JUN-22 Modesto, CA 95354
United States
558427 23-DEC-21 CoM Utilities MODESTO 1010, 10th Street 29.22 20-JUN-22 Modesto, CA 95354
United States

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558622 30-DEC-21 CoM Utilities MODESTO 1010, 10th Street 24.59 20-JUN-22 Modesto, CA 95354
United States
558635 30-DEC-21 CoM Utilities MODESTO 1010, 10th Street 7.24 20-JUN-22 Modesto, CA 95354
United States
558639 30-DEC-21 CoM Utilities MODESTO 1010, 10th Street 20.67 20-JUN-22 Modesto, CA 95354
United States
558646 30-DEC-21 CoM Utilities MODESTO 1010, 10th Street 8.52 20-JUN-22 Modesto, CA 95354
United States
560167 11-FEB-22 CENTRALSQUARE TECHNOLOGIES, MAIN 1000 BUSINESS CENTER DRIVE 1,305.00 02-JUN-22 LAKE MARY, FL 32746
United States
561178 11-MAR-22 CoM Utilities MODESTO 1010, 10th Street 230.00 14-JUN-22 Modesto, CA 95354
United States
561193 11-MAR-22 AHEAD, INC MAIN 401 N. MICHIGAN AVE, SUITE 3400 1,507.98 14-JUN-22 CHICAGO, IL 60611
United States
561946 25-MAR-22 CLERK-RECORDER MAIN STANISLAUS COUNTY 799.00 14-JUN-22 1021 I STREET
MODESTO, CA 95354
United States
562321 01-APR-22 MCCLATCHY COMPANY LLC dba M MAIN PO BOX 510626 2,625.00 29-JUN-22 LIVONIA, MI 48151
United States
562585 08-APR-22 HP INC MAIN 1501 PAGE MILL ROAD 2,139.54 14-JUN-22 PALO ALTO, CA 94304
United States
563200 22-APR-22 FERRELLGAS LP MAIN ONE LIBERTY PLAZA 3,141.64 02-JUN-22 LIBERTY, MO 64068
United States
563522 29-APR-22 MODESTO BATTERY MAIN 617 WINMOORE WAY 193.09 14-JUN-22 UNIT C
MODESTO, CA 95358
United States
563655 06-MAY-22 CoM Misc MODESTO 1010, 10th Street 750.00 29-JUN-22 Modesto, CA 95354
United States
CoM PRIMARY Report Date: 05-JUL-2022 12:13
Void Payment Register Page: 5
Include Zero Amount Payments: No Period From: 01-JUN-22 To: 30-JUN-22 Display Payee Address: Yes Date: Void Date
Bank: Bank of the West Branch: Main Branch Account: BoTW Main Acount AP Checks Bank Account Currency: USD Payment Currency: USD ( US Dollar ) Payment Number Date Payee Name Site Address Payment Amount Void Date

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--------------- --------- --------------------------- --------------- --------------------------------- ----------------- --------- Payment Document: CoM AP BoTW Check
563859 13-MAY-22 CoM PRN MODESTO 1010 10th STREET 517.00 29-JUN-22 MODESTO, CA 95354
United States
563873 13-MAY-22 CoM Rebate Modesto 1010 10th STREET 2,777.50 23-JUN-22 MODESTO, CA 95354
United States
563891 13-MAY-22 COM TRAKIT MODESTO 1010 10TH STREET 1,625.56 23-JUN-22 MODESTO, CA 95354
United States
563893 13-MAY-22 CoM Utilities MODESTO 1010, 10th Street 200.00 02-JUN-22 Modesto, CA 95354
United States
564072 20-MAY-22 Canatsy, Justin C OFFICE 1,077.84 23-JUN-22 564084 20-MAY-22 Villalpando, Edgar OFFICE 1,077.84 02-JUN-22 564173 20-MAY-22 CONSOLIDATED CM MAIN 180 GRAND AVENUE STE 1520 179,108.40 14-JUN-22 OAKLAND, CA 94612
United States
564441 27-MAY-22 Buffa, Vincent OFFICE 39.95 23-JUN-22
564567 27-MAY-22 CLERK-RECORDER MAIN STANISLAUS COUNTY 57.00 14-JUN-22 1021 I STREET
MODESTO, CA 95354
United States
564582 27-MAY-22 DEPT OF HOUSING AND COMMUNI MAIN DEV STATE OF CALIFORNIA 570.00 14-JUN-22 PO BOX 2111
SACRAMENTO, CA 95812
United States
564973 10-JUN-22 COM HDL MODESTO 1010 10TH STREET 100.00 23-JUN-22 MODESTO, CA 95354
United States
-----------------
Payment Document Subtotal 204,119.54
-----------------
Bank Account Subtotal 204,119.54
-----------------
Report Count: 74 Report Total 204,119.54
*** End of Report ***

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CITY OF MODESTO

COUNCIL AGENDA REPORT
DATE OF MEETING:

August 9, 2022
Date: June 6, 2022
TO: Mayor and City Council
THROUGH: Joseph P. Lopez, City Manager
FROM: Laurie A Smith, Director of Parks, Recreation and Neighborhoods SUBJECT: Water Tank Site New Cingular Cell Tower Lease Amendment #2 CONTACT: Nathan Houx, Parks Planning and Development Manager, [email protected], 209-571-5526
DESCRIPTION:

Consider approving a second cell tower lease amendment to the site lease agreement with New Cingular Wireless PCS, LLC, extending the maximum term of the Agreement through August 31, 2047. (Funding Source: Cell Tower Facility Rental Revenue) STRATEGIC PLAN ELEMENT:

This item is consistent with the following 2020-2025 Strategic Plan Areas of Focus: Quality of Life and Governance and Service Delivery.

BACKGROUND:

The City of Modesto partners with various cellular service providers by leasing city property for cell towers. These partnerships are a benefit to the residents of the City of Modesto by improving cellular service coverage throughout Modesto and improving coverage for the Federal Communications Commission mandated E911 Services.

On August 27, 2002, the City entered a 5-year lease agreement with New Cingular PCS, LLC, formally AT&T Wireless Services of California, LLC, for a lease on a portion of the existing water tower located near 10th and D Streets for use as a cell tower. The site lease agreement had an initial term that expired on August 31, 2007, and was renewed in August 2007 for an additional term of five years, which ended on August 31, 2012.

On September 28, 2010, by Resolution No. 2010-418, the agreement was amended to provide for two (2), five-year extensions, ending on August 31, 2022.

New Cingular notified the City of their interest in amending the existing lease agreement to provide long-term site security.
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City Council, August 9, 2022
Water Tank Site New Cingular Cell Tower Lease Amendment #2

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DISCUSSION:

In order to provide long-term security, New Cingular, requests that the City provide a long-term extension to this contract. This extension will give New Cingular assurance that the site is available for use long-term, and will ensure that their large capital investment of costly communication equipment will be secure well beyond the current agreement’s expiration date.

Additionally, this amendment will also ensure the stability of a site that provides E911 services for the citizens of Modesto. Finally, this amendment will provide a fixed revenue source to the City for the next 20+ years.

Included in Amendment No. 2 to Site Lease Agreement (attached) are the following notable changes:
1) Term extension: five (5) years with up to four (4) additional five (5) year renewal terms which would extend the final contract expiration term until August 31, 2047. 2) Rent escalation: effective September 1, 2027, the rent will increase at a rate of 3% each year thereafter.

FISCAL IMPACT:

The terms of this amendment adjust how the automatic rent escalation is calculated. The first amendment to the agreement adjusted the rent 12.50% after the end of the initial five-year term.

The amendment changes the rent escalation calculation to a fixed annual increase of 3% regardless of CPI or other economic performance indicators, beginning on the fifth anniversary of the agreement. This ensures that the City will be able to plan for a steadily maintained growth of revenue over the life of this amendment (approximately 25 years).

Effective September 1, 2022, the rent will be $1,800 Monthly ($21,600 annually) and increase at a rate of 3% each year, beginning September 1, 2027. If approved, this amendment will provide new revenue to the City of approximately $705,811 over the full term of the lease. Ten percent (10%) of the monthly revenue will be deposited into the Parks, Recreation and Neighborhoods Department’s Parks Planning and Development Division’s revenue account # 0100-32020- 46002 for administration, and the remaining 90% of the revenue will be deposited into the Water Fund # 4100-45050-46002.

Water Tank Site cell site estimated revenue:

Water Fund (90%) $ 635,230
Administration and Contract Support (10%) $ 70,581
Total Estimated Revenue during 25-year contract term $ 705,811 No budget adjustment is required at this time. Revenue has already been factored into the operating budget for FY2022-2023.

COMMITTEE RECOMMENDATION:

This item was reviewed and approved by the Finance Committee on May 23, 2022, and is being forwarded for the consideration of the full council.

CEQA/NEPA REQUIREMENTS:

The approval of this agreement is exempt from CEQA because it is an administrative action. #13..
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City Council, August 9, 2022
Water Tank Site New Cingular Cell Tower Lease Amendment #2

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RECOMMENDED COUNCIL ACTION:

Staff Recommendations:

Resolution approving a second cell tower lease amendment to the site lease agreement with New Cingular Wireless PCS, LLC, extending the maximum term of the agreement through August 31, 2047 and authorizing the City Manager, or his designee to execute the agreement Approved by:

Laurie A Smith, Director of Parks, Recreation and
Neighborhoods
Joseph P. Lopez, City Manager
Attachments:

1. Resolution

2. Water Tower Cell Site Lease - 2nd Amendment

3. Memorandum of Lease Second Amendment
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08/09/2022/PRND/Houx 1 2022-?

MODESTO CITY COUNCIL
RESOLUTION NO. 2022-

RESOLUTION APPROVING A SECOND CELL TOWER LEASE AMENDMENT

TO THE SITE LEASE AGREEMENT WITH NEW CINGULAR WIRELESS PCS,

LLC, EXTENDING THE MAXIMUM TERM OF THE AGREEMENT
THROUGH AUGUST 31, 2047 AND AUTHORIZING THE CITY MANAGER,

OR HIS DESIGNEE TO EXECUTE THE AGREEMENT
WHEREAS, the City of Modesto partners with various cellular service providers by leasing city property for cell towers; and
WHEREAS, these partnerships are a benefit to the residents of the City of Modesto by improving cellular service coverage throughout Modesto, improving coverage for the FCC mandated E911 Services; and
WHEREAS, on August 27, 2002, the City entered a 5-year lease agreement with New Cingular PCS, LLC, formally AT&T Wireless Services of California, LLC, for a lease on a portion of the existing water tower located near 10th and D Streets for use as a cell tower; and
WHEREAS, site lease agreement had an initial term that expired on August 31, 2007, and was renewed in August 2007 for an additional term of five years, which ended on August 31, 2012; and
WHEREAS, on September 28, 2010, by Resolution No. 2010-418, the agreement was amended to provide for two (2), five-year extensions, ending on August 31, 2022; and
WHEREAS, New Cingular notified the City of their interest in amending the existing lease agreement to provide long-term site security; and #13..
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08/09/2022/PRND/Houx 2 2022-?
WHEREAS, the two parties have reach agreement on terms for an amendment, extending the lease agreement; and
WHEREAS, the amendment includes the following terms; and 1) Term extension: Five (5) years with up to four additional five (5) year renewal terms which would extend the final contract expiration term until August 31, 2047.
2) Effective September 1, 2027, the rent will increase at a rate of 3% each year thereafter.

WHEREAS, the second amendment was considered by the Finance Committee on Monday, May 23, 2022, and was approved to be forwarded to Council for consideration.

NOW, THEREFORE, BE IT RESOLVED by the Council of the City of Modesto that it hereby approves a second cell tower lease amendment with New Cingular Wireless PCS, LLC, extending the maximum term of the agreement through August 31, 2047.

BE IT FURTHER RESOLVED, that the City Manager, or his designee, is hereby authorized to execute the agreement, in a form approved by the City Attorney.

The foregoing resolution was introduced at a regular meeting of the Council of the City of Modesto held on the 9th day of August, 2022, by Councilmember who moved its adoption, which motion being duly seconded by Councilmember , was upon roll call carried and the resolution adopted by the following vote:

AYES: Councilmembers:

NOES: Councilmembers:

ABSENT: Councilmembers:
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08/09/2022/PRND/Houx 3 2022-?
ATTEST:

DIANA NAYARES-PEREZ, CMC,
City Clerk
APPROVED AS TO FORM:

BY: ___________________________
JOSE M. SANCHEZ, City Attorney
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Category 2 Amendment Form
Market: San Francisco / Sacr / Reno
Cell Site Number: CVL01322
Cell Site Name: DT Modesto
Fixed Asset Number: 10090368

SECOND AMENDMENT TO SITE LEASE AGREEMENT
THIS SECOND AMENDMENT TO SITE LEASE AGREEMENT (“Second
Amendment”) dated as of the later date below (the “Effective Date”) is by and between City of Modesto, a California municipal corporation, having a mailing address at P.O. Box 642, Modesto CA, 95353 (“Landlord”) and New Cingular Wireless PCS, LLC, a Delaware limited liability company, having a mailing address at 1025 Lenox Park Blvd. NE, 3rd Floor, Atlanta, GA 30319 (“Tenant”).

WHEREAS, Landlord and Tenant (or its affiliate or predecessor in interest) entered into a Site Lease Agreement dated August 27, 2002, as amended by First Amendment to Site Lease Agreement dated September 28, 2010 (“First Amendment”), whereby Landlord leased to Tenant certain Premises, therein described, that are a portion of the Property located at 920 D Street, Modesto, CA 95354 (collectively, the “Agreement”); and
WHEREAS, the term of the Agreement will expire on August 31, 2022, and the parties mutually desire to renew the Agreement, memorialize such renewal period and modify the Agreement in certain other respects, all on the terms and conditions contained herein; and WHEREAS, Landlord and Tenant desire to amend the Agreement to extend the term of the Agreement; and
WHEREAS, Landlord and Tenant desire to adjust the Rent in conjunction with the modifications to the Agreement contained herein; and
WHEREAS, Landlord and Tenant desire to amend the Agreement to clarify the scope of Tenant's permitted use of the Premises; and
WHEREAS, Landlord and Tenant, desire to amend the Agreement to modify the notice section thereof; and
WHEREAS, Landlord and Tenant, in their mutual interest, wish to amend the Agreement as set forth below accordingly.

NOW THEREFORE, in consideration of the foregoing and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

1. Term. The term of the Agreement shall be amended to provide that the Agreement has a new initial term of five (5) years (“New Initial Term”), commencing on September 1, 2022, #13..
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Category 2 Amendment Form
(“New Term Commencement Date”). As of such New Term Commencement Date, all remaining extension terms in the Agreement except as set forth herein shall be void and of no further force and consequence. The Agreement will be automatically renewed for up to four (4) additional five (5) year terms (each an “Extension Term”) upon the same terms and conditions of the Agreement, as amended herein, without further action by Tenant, unless Tenant notifies Landlord in writing of Tenant’s intention not to renew the Agreement at least sixty (60) days prior to the expiration of the New Initial Term or the then current Extension Term. Hereafter, the defined term “Term” shall include the New Initial Term and any applicable Extension Term.

Landlord agrees and acknowledges that except that as such permitted use or other rights may be amended herein, Tenant may continue to use and exercise its rights under the Agreement as permitted prior to the New Initial Term.

2. Reserved.

3. Modification of Rent. Commencing on September 1, 2022, the current Rent payable under the Agreement shall be One Thousand Eight Hundred and No/100 Dollars ($1,800.00) per month, and shall continue during the Term, subject to adjustment, if any, as provided below. In the event of any overpayment of Rent prior to or after the Effective Date, Tenant shall have the right to deduct from any future Rent payments an amount equal to the overpayment amount. It shall be the responsibility of the Tenant to ensure Rent payments, including any Rent escalations provided herein, are paid in full.

4. Future Rent Increase / Extension Term Increase. Commencing on September 1, 2027 and at the beginning of each subsequent Extension Term thereafter, the Rent shall increase by three percent (3%) per year, every year of Agreement Term duration. Such Rent escalations shall replace and be in lieu of any Rent escalations scheduled to occur pursuant to the Agreement or First Amendment.

5. Permitted Use. Tenant, its personnel, invitees, contractors, agents, subtenants, or its authorized sublessees, or assigns may use the Premises, at no additional cost or expense, for the transmission and reception of any and all communications signals and to modify, supplement, replace, upgrade, expand, including but not limited to the number and type(s) of antennas, or refurbish the equipment and/or improvements thereon or relocate the same within the Premises at any time during the term of the Agreement for any reason, or in order to be in compliance with any current or future federal, state or local mandated application, including but not limited to emergency 911 communication services, or for any other reason. Landlord shall reasonably cooperate in obtaining governmental and other use permits or approvals necessary or desirable for the foregoing permitted use. If Landlord does not comply with the terms of this Section, in addition to any other rights it may have at law, Tenant may terminate the Agreement and shall have no further liability to Landlord. The Tenant must inform the Landlord before any said use is initiated.

Landlord reserves the right to request additional information, including but not limited to engineering designs or calculations to confirm existing infrastructure will not be compromised by proposed modifications or improvements. Landlord reserves the right to deny said modifications or improvements if they will negatively impact or compromise the structural integrity of existing infrastructure or impede existing Landlord operations. Nothing in this Agreement shall be #13..
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Category 2 Amendment Form
interpreted as restricting or otherwise limiting the Landlord’s regulatory authority, including land use authority, or otherwise binding the Landlord to issue government approvals.

6. Removal/Restoration. In addition to the terms set forth in the Agreement, Landlord agrees that the Communications Facility and any related equipment brought to the Premises by Tenant, its agents, contractors, predecessors in interest or subtenants, shall be and remain Tenant’s personal property or the personal property of its subtenant(s), as the case may be. Landlord waives any and all rights it may have, including any rights it may have in its capacity as Landlord under the Agreement to assert any liens, encumbrances or adverse claims, statutory or otherwise, related to or in connection with the Communications Facility or any portion thereof. Tenant, in its sole discretion, may remove the Communications Facility or any portion of the Communications Facility at any time during the Term of the Agreement, with notice to Landlord and with Landlord’s consent. Tenant will repair any damage to the Property resulting from Tenant’s removal activities and not normal wear and tear. Notwithstanding any terms to the contrary, Tenant will not be responsible for the replacement of any trees, shrubs or other vegetation, nor will Tenant be required to remove from the Premises or the Property any foundations or underground utilities. Tenant, may, in its sole discretion, transfer any improvements or alterations to the Premises to Landlord at any time during the Term of the Agreement with notice to the Landlord and with the Landlord’s consent.

7. Acknowledgement. Landlord acknowledges that: 1) this Second Amendment is entered into of the Landlord’s free will and volition; 2) Landlord has read and understands this Second Amendment and the underlying Agreement and, prior to execution of this Second Amendment, was free to consult with counsel of its choosing regarding Landlord’s decision to enter into this Second Amendment and to have counsel review the terms and conditions of this Second Amendment; 3) Landlord has been advised and is informed that should Landlord not enter into this Second Amendment, the underlying Agreement between Landlord and Tenant, including any termination or non-renewal provision therein, would remain in full force and effect.

8. Notices. Section 15 of the Agreement is hereby deleted in its entirety and replaced with the following:

NOTICES. All notices, requests, demands and communications hereunder will be given by first class certified or registered mail, return receipt requested, or by a nationally recognized overnight courier, postage prepaid, to be effective when properly sent and received, refused or returned undelivered. Notices will be addressed to the parties as follows.

If to Landlord:

City of Modesto
Director of Parks, Recreations and Neighborhood
P.O. Box 642
Modesto, CA 95353
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Category 2 Amendment Form
If to Tenant:

New Cingular Wireless PCS, LLC
Attn: TAG – LA
Re: Cell Site #: CVL01322
Cell Site Name: DT Modesto (CA)
Fixed Asset #: 10090368
1025 Lenox Park Blvd. NE
3rd Floor
Atlanta, GA 30319
With a copy to:

New Cingular Wireless PCS, LLC
Attn: Legal Department
Re: Cell Site #: CVL01322
Cell Site Name: DT Modesto (CA)
Fixed Asset #: 10090368
208 S. Akard Street
Dallas, Texas, 75202-4206
The copy sent to the Legal Department is an administrative step which alone does not constitute legal notice. Either party hereto may change the place for the giving of notice to it by thirty (30) days prior written notice to the other as provided herein.

9. Sale of the Property.
(a) Landlord shall not be prohibited from the selling, leasing or use of any of the Property or the directly adjacent property except as provided below. (b) If Landlord, at any time during the Term of the Agreement, decides to rezone or sell, subdivide or otherwise transfer all or any part of the Premises, or all or any part of the Property or directly adjacent property, to a purchaser other than Tenant, Landlord shall promptly notify Tenant in writing, and such rezoning, sale, subdivision or transfer shall be subject to the Agreement and Tenant’s rights hereunder. In the event of a change in ownership, transfer or sale of the Property, within ten (10) days of such transfer, Landlord or its successor shall send the documents listed below in this subsection (b) to Tenant. Until Tenant receives all such documents, Tenant shall not be responsible for any failure to make payments under the Agreement and reserves the right to hold payments due under the Agreement.
i. Old deed to the Property
ii. New deed to the Property
iii. Bill of Sale or Transfer
iv. Copy of current Tax Bill
v. New IRS Form W-9
vi. Completed and Signed AT&T Payment Direction Form
vii. Full contact information for new Landlord including phone number(s) #13..
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Category 2 Amendment Form
(c) Landlord agrees not to sell, lease or use any areas of the Property or directly adjacent property for the installation, operation or maintenance of other wireless communications facilities if such installation, operation or maintenance would interfere with Tenant’s permitted use or communications equipment as determined by radio propagation tests performed by Tenant in its sole discretion. Landlord or Landlord’s prospective purchaser shall reimburse Tenant for any costs and expenses of such testing. If the radio frequency propagation tests demonstrate levels of interference unacceptable to Tenant, Landlord shall be prohibited from selling, leasing or using any areas of the Property or the surrounding property for purposes of any installation, operation or maintenance of any other wireless communications facility or equipment. (d) The provisions of this Section shall in no way limit or impair the obligations of Landlord under the Agreement, including interference and access obligations.

10. Charges. All charges payable under the Agreement such as utilities and taxes shall be billed by Landlord within one (1) year from the end of the calendar year in which the charges were incurred; any charges beyond such period shall not be billed by Landlord, and shall not be payable by Tenant. The foregoing shall not apply to monthly Rent which is due and payable without a requirement that it be billed by Landlord. The provisions of this subsection shall survive the termination or expiration of the Agreement.

11. Other Terms and Conditions Remain. In the event of any inconsistencies between the Agreement and this Second Amendment, the terms of this Second Amendment shall control.

Except as expressly set forth in this Second Amendment, the Agreement otherwise is unmodified and remains in full force and effect. Each reference in the Agreement to itself shall be deemed also to refer to this Second Amendment.

12. Capitalized Terms. All capitalized terms used but not defined herein shall have the same meanings as defined in the Agreement.
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Category 2 Amendment Form
IN WITNESS WHEREOF, the parties have caused this Second Amendment to be effective as of the last date written below.

LANDLORD:

City of Modesto,
a California municipal corporation
TENANT:

New Cingular Wireless PCS, LLC,
a Delaware limited liability company
By: AT&T Mobility Corporation
Its: Manager
By: ___________________________ By: ___________________________ Print Name: Print Name:

Its: Its:

Date: Date:
[ACKNOWLEDGMENTS APPEAR ON THE NEXT PAGE]
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Category 2 Amendment Form

LANDLORD ACKNOWLEDGMENT
State of California

County of ______________________ )
On __________________________ before me,
__________________________________________________________ (insert name and title of the officer)
personally appeared
_______________________________________________________________________________, who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument.

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

WITNESS my hand and official seal.

Signature __________________________________ (Seal)
A notary public or other officer completing this
certificate verifies only the identity of the individual who signed the document to which this certificate is
attached, and not the truthfulness, accuracy, or
validity of that document.
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Category 2 Amendment Form

TENANT ACKNOWLEDGMENT
State of California

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

WITNESS my hand and official seal.

AT&T Mobility
Attn: Lease Administration
1025 Lenox Park Blvd NE
3rd Floor
Atlanta, GA 30319
APN: 106-046-001-000
_____________________________________________________________________________________ (Space Above This Line For Recorder’s Use Only)
Re: Cell Site #: CVL01322
Cell Site Name: DT Modesto (CA)
Fixed Asset Number: 10090368
State: CA
County: Stanislaus

MEMORANDUM OF SECOND AMENDMENT TO SITE LEASE AGREEMENT
This Memorandum of Second Amendment to Site Lease Agreement is entered into on this ____ day of ________________, 2022, by and between City of Modesto, a California municipal corporation, having a mailing address at 1010 10th Street, Utilities Dept., Suite 4600, Modesto, CA 95354 (hereinafter referred to as “Landlord”) and New Cingular Wireless PCS, LLC, a Delaware limited liability company, having a mailing address of 1025 Lenox Park Blvd. NE, 3rd Floor, Atlanta, GA 30319 (hereinafter referred to as "Tenant").

1. Landlord and Tenant (or its predecessor in interest) entered into a certain Site Lease Agreement dated August 27, 2002, as amended by that certain First Amendment to Site Lease Agreement dated September 28, 2010, and as further amended by that certain Second Amendment to Site Lease Agreement dated ____________________________, 2022 (collectively, the “Agreement”) for the purpose of installing, operating and maintaining a communications facility and other improvements. A Memorandum of First Amendment to Site Lease Agreement reflecting the Agreement was recorded on August 19, 2014, as Document No. 2014-0054244-00, in the public records of Stanislaus County, State of California.

2. The parties have agreed that the Agreement has a new initial term of five (5) years (“New Initial Term”), commencing on September 1, 2022, subject to the provisions of the Agreement.

3. The parties have agreed, following the New Initial Term, to add four (4) successive periods of five (5) years each upon the same terms and conditions of the Agreement.

4. The portion of the land being leased to Tenant (the “Leased Premises”) is described in Exhibit 1 annexed hereto.

5. This Memorandum of Second Amendment to Site Lease Agreement is not intended to amend or modify, and shall not be deemed or construed as amending or modifying, any of the terms, conditions or provisions of the Agreement, all of which are hereby ratified and affirmed. In the event of a conflict between the provisions of this Memorandum of Second Amendment to Site Lease Agreement and the provisions of the Agreement, the provisions of the Agreement shall control. The Agreement shall be binding upon and inure to the benefit of the parties and their respective heirs, successors, and assigns, subject to the provisions of the Agreement.
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IN WITNESS WHEREOF, the parties have executed this Memorandum of Second Amendment to Site Lease Agreement as of the day and year first above written.

LANDLORD:

City of Modesto,
a California municipal corporation
By: ________________________________________
Print Name:

Its:

Date:

TENANT:

New Cingular Wireless PCS, LLC,
a Delaware limited liability company
By: AT&T Mobility Corporation
Its: Manager
By: _______________________________________
Print Name:

Its:

Date:
[ACKNOWLEDGMENTS APPEAR ON NEXT PAGE]
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LANDLORD ACKNOWLEDGMENT
State of California

County of ______________________ )
On ________________________________ before me, ____________________________________________________ (insert name and title of the officer)
personally appeared _______________________________________________________________________________, who proved to me on the basis of satisfactory evidence to be the person(s) whose name(s) is/are subscribed to the within instrument and acknowledged to me that he/she/they executed the same in his/her/their authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the instrument.

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

WITNESS my hand and official seal.

TENANT ACKNOWLEDGMENT
State of California

I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph is true and correct.

WITNESS my hand and official seal.

DESCRIPTION OF LEASED PREMISES

Page 1 of 1 ends

to the Memorandum of Second Amendment to Site Lease Agreement dated ________________________, 2022, by and between City of Modesto, as Landlord, and New Cingular Wireless PCS, LLC, a Delaware limited liability company, as Tenant.

The Premises are a portion of the Property described and/or depicted as follows:

Property Legal Description:
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CITY OF MODESTO

COUNCIL AGENDA REPORT
DATE OF MEETING:

August 9, 2022
June 18, 2022
TO: Mayor and City Council
THROUGH: Joseph P. Lopez, City Manager
FROM: William Wong, Director of Utilities
SUBJECT: Initial Study/Mitigated Negative Declaration for the Riverdale Park Tract Community Services District Water System Consolidation CONTACT: Jim Alves, Senior Civil Engineer, [email protected], (209) 571-5557 DESCRIPTION:

Consider approving the Initial Study/Mitigated Negative Declaration (IS/MND) for the Riverdale Park Tract Community Services District Water System Consolidation Project in accordance with the California Environmental Quality Act (CEQA), and making certain findings concerning the environmental impacts and mitigation measures, approving a Mitigation Monitoring and Reporting Program, in connection with the Riverdale Park Tract Community Services District Water System Consolidation Project contemplated by the IS/MND, directing staff to file a Notice of Determination for the IS/MND. (Funding Source: Water Fund) STRATEGIC PLAN ELEMENT:

The recommended action supports the 2020-2025 City of Modesto Strategic Plan Initiatives, Goal D: Provide safe, efficient, and reliable infrastructure through proactive community investment, maintenance, and sustainability efforts.

BACKGROUND:

The Riverdale Park Tract Community (Riverdale or community) is an unincorporated Stanislaus County area located west of Carpenter Rd, north of W. Hatch Rd and south of the Tuolumne River. This community consists of an estimated 500 residents and is served potable water through approximately 175 connections by the Riverdale Park Tract Community Services District (District), which owns and operates the water system. The community is primarily comprised of residential homes with a small VFW Hall/Community Center and a small food market. Riverdale, which was first developed in the 1940s, is identified as an economically Severely Disadvantaged Community, because the median household income is less than 60% of the statewide average.

The District was formed in 1984 with the purchase of a private water system for the purpose of providing potable water to the community. In the late 1980s, the District replaced the aging #14..
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Initial Study/Mitigated Negative Declaration for the
Riverdale Park Tract Community Services District Water System Consolidation

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small-diameter steel water mains with six and eight-inch PVC pipes. The water system consists of one active groundwater well, one inactive and inoperable well, three 3,400-gallon hydraulic storage tanks, and approximately 12,000 feet of water distribution pipes. Services are not metered and the current flat-rate charge is $30 per month. The active well was drilled in 1981 to a depth of 120 feet which is considered a shallow well by current municipal practices. A second non-permitted well near Carpenter Rd was also developed but this well experienced a collapsed casing and has been inoperable for many years.

In March 1992, the City and the District entered into an agreement to provide metered water supply through a new water main connection to the District at an industrial water rate charge for periods when the District may need supplemental or emergency water supply. The District has utilized this supply from time to time when their well was non-operable for various reasons. The last major event occurred in 1997 when the District required emergency supply for a long period of time due to major flooding of the community that took the District well out of service. This resulted in accumulation of debt to the City in the form of unpaid water usage charges that the District was not able to repay and, as such, in September 2014 by Resolution 2014-378, the City forgave this debt as non-recoverable.

In 2015, The Stanislaus County Department of Environmental Resources (DER) identified the District’s water system as in violation of the Maximum Contaminant Level (MCL) for Uranium under Title 22 regulations. In 2016, the DER issued a Compliance Order requiring the District to complete a Corrective Action Plan to bring the water system into compliance. The State of California provided technical assistance funding to conduct a Feasibility Study administered by Self-Help Enterprises (Self Help), a non-profit that assists disadvantaged communities with various services.

A Feasibility Study was completed by Self-Help in 2018 which evaluated four alternatives to mitigate the water quality issue: 1) a new well, 2) a treatment system, 3) blending with a new water source, and 4) a new water source from Modesto through consolidation of the water system. Due to cost concerns, a uranium treatment system was ruled out and the State did not see long-term reliability in a water system with a new single-well as a viable solution, even if a new well could produce potable water. As a result, in 2018, Modesto Utilities Department staff was approached with the solution to consolidate the District’s water system and become the sole water provider for Riverdale.

Riverdale is within the current Modesto Area General Plan Boundary and is currently served water on an emergency basis. Therefore, the City conducted analysis (December 2018) to determine what Capital Improvement Projects (CIP) would be necessary to provide water on a permanent basis. The Riverdale Water System Consolidation Project consists of replacing approximately 80% of the existing distribution system with 12-inch and 8-inch water mains, destroying the two existing water wells, and metering all customer services. Once completed, the Community would be served with City-supplied water and the water system would become property of the City to maintain and operate. Once the City assumes ownership, responsibility and operation, the District will be dissolved. All existing and future services within the defined Service Area would then become Modesto water customers. The project will be fully funded by a State Revolving Fund (SRF) grant. The Riverdale Community will not be annexed to the City as part of the Water System Consolidation Project.
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In October 2019, by Resolution 2019-460, the City Council authorized submittal of a grant application for State funds that could be utilized for this project. The grant application process is nearing completion with expectation of funding award by early 2023.

In January 2021, by Resolution 2021-079, the City Council approved a Water System Consolidation Agreement with the District which describes the conditions for the District and City to consolidate the Riverdale water system under Modesto’s ownership. Key provisions of the agreement are that the State pay for the improvements necessary to consolidate the water system and serve the community and that the District remain financially solvent with no debts until the District’s assets are transferred to the City.

DISCUSSION:

The City is the project proponent and the lead agency under CEQA. In accordance with CEQA requirements, a Notice of Availability and Intent to Adopt (NOA-NOI) the IS/MND was circulated to all Stakeholders within the project area as well as public agencies and State agencies through the State Clearinghouse. The Draft IS/MND was made available for review for 30 days under CEQA Guidelines Section 15105 through the State Clearinghouse and the City’s website for comment beginning on January 31, 2022 and ending on March 2, 2022.

Written responses were prepared to all comments received during the public comment period.

The IS/MND comprises the Draft IS/MND, comments received and responses to comments, and the MMRP. No new information was received during the comment period or included in the IS/MND that would require recirculation of the Draft IS/MND under State CEQA Guidelines Section 15073.5. Approval of the Initial Study/Mitigated Negative Declaration (IS/MND) for the Riverdale Park Tract Community Services District Water System Consolidation Project does not approve the consolidation itself or any related construction project. Rather, such action will simply determine that the project, if approved, would not cause any significant environmental impacts other than those that are eliminated or reduced to a level of insignificance by the mitigation measures included in the Mitigation Monitoring and Reporting Program. It is anticipated that the City Council will consider approval of the consolidation in early 2023, after the State grant is funded.

FISCAL IMPACT:

Approving the IS/MND does not have a direct fiscal impact.

CEQA/NEPA REQUIREMENTS:

The City of Modesto (City), as lead agency, has prepared this IS/MND to provide other responsible agencies and the public with information about the potential environmental effects of the proposed Riverdale Park Tract Community Services District (RPTCSD or District) Water System Consolidation Project. The Draft IS/MND and Mitigation Monitoring and Reporting Program (MMRP) has been prepared in compliance with the California Environmental Quality Act of 1970 (as amended) and the State CEQA Guidelines (14 California Code of Regulations [CCR] 15000 et seq.).

COMMITTEE RECOMMENDATION:

This item was considered by the Finance Committee at the June 27, 2022 meeting where it was recommended that it be forwarded to Council.
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Initial Study/Mitigated Negative Declaration for the
Riverdale Park Tract Community Services District Water System Consolidation

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RECOMMENDED COUNCIL ACTION:

Staff Recommendations:

Resolution approving the Initial Study/Mitigated Negative Declaration for the Riverdale Park Tract Community Services District Water System Consolidation Project in accordance with the California Environmental Quality Act and making certain findings concerning the environmental impacts and mitigation measures, approving a Mitigation Monitoring and Reporting Program and directing staff to file a Notice of Determination.

Approved by:

William Wong, Director of Utilities
Joseph P. Lopez, City Manager
Attachments:

1. Resolution

2. Exhibit A: Initial Study and Mitigated Negative Declaration (IS/MND)

3. Exhibit B: Comments and Responses to IS/MND

4. Exhibit C: Mitigation Monitoring and Reporting Program #14..
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1 2022-XXX

MODESTO CITY COUNCIL
RESOLUTION NO. 2022-XXX

RESOLUTION APPROVING THE INITIAL STUDY/MITIGATED NEGATIVE

DECLARATION FOR THE RIVERDALE PARK TRACT COMMUNITY

SERVICES DISTRICT WATER SYSTEM CONSOLIDATION PROJECT IN

ACCORDANCE WITH THE CALIFORNIA ENVIRONMENTAL QUALITY

ACT AND MAKING CERTAIN FINDINGS CONCERNING THE

ENVIRONMENTAL IMPACTS AND MITIGATION MEASURES, APPROVING

A MITIGATION MONITORING AND REPORTING PROGRAM AND

DIRECTING STAFF TO FILE A NOTICE OF DETERMINATION
WHEREAS, the City conducted analyses in 2018 to determine availability of City water supply and required water system improvements necessary to serve Modesto water supply to the Riverdale Community, and
WHEREAS, the State funded the design effort to develop plans to improve the Riverdale Water System and abandon the groundwater well, and WHEREAS, by Resolution 2021-079, the City Council approved a Water System Consolidation Agreement with the District outlining certain conditions and the provision for State funds to pay for all consolidation costs, and WHEREAS, in 2021, the State funded the required California Environmental Quality Act effort consisting of an Initial Study/Mitigated Negative Declaration (IS/MND) for the Riverdale Water System Consolidation Project, and WHEREAS, the Draft IS/MND was distributed to the public for review and comment from January 31, 2022 to March 2, 2022, and
WHEREAS, comments to the Draft IS/MND were received, written responses to comments were prepared, and the Mitigation Monitoring and Reporting Plan (MMRP) was developed.
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2 2022-XXX
NOW, THEREFORE, BE IT RESOLVED by the Council of the City of Modesto that the Initial Study/Mitigated Negative Declaration reflects the City’s independent judgment and analysis, that the document has been completed in compliance with the requirements of the California Environmental Quality Act and, on the basis of the whole record, there is no substantial evidence that the project will have a significant effect on the environment.

BE IT FURTHER RESOLVED by the Council of the City of Modesto that it hereby approves the Initial Study/Mitigated Negative Declaration for the Riverdale Park Tract Community Services District Water System Consolidation Project, a copy of which is on file in the City of Modesto Utilities Department, and making certain findings concerning the environmental impacts and mitigation measures, and approving a Mitigation Monitoring and Reporting Program, a copy of which is on file in the City of Modesto Utilities Department.

BE IT FURTHER RESOLVED that the Director of Utilities, or his designee, is directed to file a Notice of Determination of this action.

The foregoing resolution was introduced at a regular meeting of the Council of the City of Modesto held on the 9th day of August 2022, by Councilmember XXX, who moved its adoption, which motion being duly seconded by Councilmember XXX, was upon roll call carried and the resolution adopted by the following vote:

AYES: Councilmembers:

NOES: Councilmembers:

ABSENT: Councilmembers:
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3 2022-XXX
ATTEST: ______________________________________
DIANE NAYARES-PEREZ, CMC, City Clerk
(SEAL)
APPROVED AS TO FORM:

BY: ________________________________
JOSE M. SANCHEZ, City Attorney
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Initial Study/Mitigated Negative
Declaration for the
Riverdale Park Tract
Community Services District
Water System Consolidation Project,
Modesto, Stanislaus County,
California
JANUARY 2022

PREPARED FOR
City of Modesto

PREPARED BY
SWCA Environmental Consultants
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INITIAL STUDY/MITIGATED NEGATIVE DECLARATION

FOR THE

RIVERDALE PARK TRACT COMMUNITY SERVICES DISTRICT

WATER SYSTEM CONSOLIDATION PROJECT,

MODESTO, STANISLAUS COUNTY, CALIFORNIA
Prepared for
City of Modesto
1010 10th Street #2100
Modesto, CA 95354
Attn: Jim Alves, Associate Civil Engineer
Prepared by
Jacqueline Markley, M.S., AICP, Environmental Planner
SWCA Environmental Consultants
1422 Monterey Street, Suite C200
San Luis Obispo, CA 93401
(805) 543-7095
www.swca.com
SWCA Project No. 52268
January 2022
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
i

CONTENTS
1 Introduction .......................................................................................................................................... 1

1.1 Project Location ........................................................................................................................ 3

1.2 Environmental Setting ............................................................................................................... 3

1.3 Project Description.................................................................................................................... 4

1.3.1 Construction ........................................................................................................................ 4

1.3.2 Operation ............................................................................................................................ 6

1.4 Project Objectives/Purpose and Need ....................................................................................... 6

1.5 Required Discretionary Approvals ............................................................................................ 7 2 Environmental Checklist and Environmental Evaluation .............................................................. 13 I. Aesthetics ................................................................................................................................ 14 II. Agriculture and Forestry Resources ........................................................................................ 16 III. Air Quality ............................................................................................................................... 18 IV. Biological Resources ............................................................................................................... 24 V. Cultural Resources .................................................................................................................. 29 VI. Energy ..................................................................................................................................... 31 VII. Geology and Soils ................................................................................................................... 32 VIII. Greenhouse Gas Emissions ..................................................................................................... 36 IX. Hazards and Hazardous Materials ........................................................................................... 38 X. Hydrology and Water Quality ................................................................................................. 42 XI. Land Use and Planning ............................................................................................................ 46 XII. Mineral Resources ................................................................................................................... 47 XIII. Noise ........................................................................................................................................ 48 XIV. Population and Housing .......................................................................................................... 50 XV. Public Services ........................................................................................................................ 51 XVI. Recreation ................................................................................................................................ 53 XVII. Transportation ......................................................................................................................... 54 XVIII. Tribal Cultural Resources ........................................................................................................ 57 XIX. Utilities and Service Systems .................................................................................................. 59 XX. Wildfire ................................................................................................................................... 62 XXI. Mandatory Findings of Significance ....................................................................................... 64 3 References ........................................................................................................................................... 67 Appendices
Appendix A. Project Design Plans
Appendix B. Air Quality Modeling
Appendix C. Special-Status Species Lists
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
ii
Figures
Figure 1. Project vicinity map....................................................................................................................... 8 Figure 2. Project location map...................................................................................................................... 9 Figure 3. Land use map. .............................................................................................................................. 10 Figure 4. Zoning map. ................................................................................................................................. 11 Figure 5. Proposed consolidation map. ....................................................................................................... 12 Tables
Table 1. Riverdale Park Tract Community Services District Monthly Water Production Rates .................. 2 Table 2. Reported Uranium Concentrations in Water Produced by Well 03 ................................................ 2 Table 3. Summary of Potential Permits and/or Approvals ........................................................................... 7 Table 4. Annual Construction Emissions for the Proposed Project ............................................................ 20 Table 5. Annual Operational Emissions for the Proposed Project .............................................................. 23 Table 6. Standard Noise Levels from Construction Equipment ................................................................. 49 #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
1 1 INTRODUCTION
The Riverdale Park Tract Community Services District (RPTCSD) is located on approximately 62 acres southwest of the city of Modesto, within the City of Modesto (City) sphere of influence, in Stanislaus County, California. The RPTCSD service area is generally bounded by the Tuolumne River to the north, Hatch Road to the south, Carpenter Road to the east, and Hatch Road to the west. The RPTCSD is located within the Riverdale Park Census Designated Place (CDP), which is classified as a Severely Disadvantaged Community (SDAC). The RPTCSD owns and operates a domestic water supply system that supplies potable water to approximately 498 residents through 178 residential connections under the authority of Domestic Water Supply Permit No. 2018‐03‐014, issued on March 16, 2015, by the Stanislaus County Department of Environmental Resources (DER). The water system is also regulated by the State Water Resources Control Board Division of Drinking Water (SWRCB‐DDW). The water system is classified as a Small Community Water System (SCWS) and has one active groundwater well referred to as Well 03 (Primary Station [PS] Code #5000019‐003), constructed in 1981. The RPTCSD water supply system also includes a second well that is inactive and inoperable.

Well 03 consists of a 14‐inch diameter steel casing to a completed depth of 120 feet. The well is gravel‐ packed from 50 to 120 feet below ground surface (BGS), and the annular seal runs from the surface to 50 feet BGS. Well 03 is equipped with a 75‐horsepower vertical turbine pump capable of producing 1,100 gallons per minute. The wellhead piping includes a source water sample tap, a check valve, a totalizer meter, and galvanized steel discharge piping. Three 3,392‐gallon steel hydropneumatic pressure tanks in series sustain pressure and provide a small storage volume for the RPTCSD. The RPTCSD has an alternative source of water supply that consists of an 8‐inch emergency connection to the City’s water system. The emergency connection was installed in 1993 and delivered water during the 1997 floods. The distribution system consists of 178 connections and includes approximately 500 linear feet (LF) of 4-inch diameter pipe, 2,655 LF of 6-inch diameter pipe, 8,660 LF of 8-inch diameter pipe, 37 valves, and 18 fire hydrants.

The RPTCSD’s monthly water production rates from 2014, 2016, and 2017 through 2020 are identified in Table 1. The data in Table 1 has been supplied by RPTCSD staff. It appears that the 2014 production is estimated because it uses the same value for every month of the year. There is no production reported for 2015 and the production for 2016 appears to be incorrect. Production figures for 2017 appear to be correct and were used to calculate the Maximum Daily Demand (MDD) and the Peak Hourly Demand (PHD).

Peak water usage occurs in June, with a MDD of 178,584 gallons and a PHD of 186 gallons per minute.

The average monthly consumption from January through September of 2017 was 3,047,778 gallons, or 100,476 gallons per day. Production figures for 2018 through 2020 appear to be correct, with the end of the year rates for 2020 being higher than expected but not out of line with the yearly production. The average monthly consumption for 2018 was 2,993,445 gallons, or 98,415 gallons per day; the average monthly consumption for 2019 was 3,491,455, or 114,788 gallons per day; and the average monthly consumption for January through November of 2020 was 3,793,091 gallons, or 124,922 gallons per day.

The increase in production rates in 2019 and 2020 is likely due to the increase in cultivation of vegetation throughout the community.

Uranium concentrations in the water produced by Well 03 have periodically exceeded the Maximum Contaminant Level of 20 picocuries per liter (pCi/L). The historical uranium concentration in the water produced by Well 03 is identified in Table 2.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
2 Table 1. Riverdale Park Tract Community Services District Monthly Water Production Rates Month
Water Production (Gallons)1
20142 2016 2017 2018 2019 2020
January 3,688,833 118,307 2,121,704 1,786,000 2,184,030 1,925,000 February 3,688,833 134,118 2,105,165 1,905,000 2,794,720 1,792,000 March 3,688,833 129,222 2,743,182 2,131,000 2,643,250 2,023,000 April 3,688,833 156,812 3,365,839 2,333,000 3,679,000 3,312,000 May 3,688,833 152,419 3,014,140 1,563,000 3,649,000 5,121,500 June 3,688,833 171,381 3,571,670 2,473,000 4,122,000 8,974,800 July 3,688,833 170,416 3,522,448 7,023,500 6,479,000 4,586,700 August 3,688,833 170,912 3,468,129 5,541,000 7,183,000 2,643,000 September 3,688,833 182,212 3,517,723 4,092,560 4,123,150 2,503,000 October 3,688,833 167,418 -- 4,153,700 3,822,180 6,374,000 November 3,688,833 183,217 -- 1,602,000 643,070 2,469,000 December 3,688,833 161,716 -- 1,317,700 575,060 --
Average 3,688,833 158,179 3,047,778 2,993,455 3,491,455 3,793,091 Notes:
1 These calculations use an average daily demand of 100,476 gallons and a population of 498 (RPTCSD Electronic Annual Report 2014); the per capita water consumption is approximately 202 gallons per capita per day. 2 It appears that the 2014 production is estimated because it uses the same value for every month of the year.

Source: am Consulting Engineers 2018
Table 2. Reported Uranium Concentrations in Water Produced by Well 03 Sample Date
Concentration
(picocuries per liter [pCi/L])
5/10/2004 20.6
2/15/2005 19
9/20/2006 18
12/27/2006 21
3/27/2007 21
6/22/2007 19
9/20/2007 13
12/12/2007 17
3/10/2008 18
6/26/2008 15
9/18/2008 15
12/1/2008 15
12/16/2011 28
12/11/2014 24
3/24/2015 21
6/23/2015 23
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
3 Sample Date
Concentration
(picocuries per liter [pCi/L])
9/29/2015 24
12/28/2015 20
3/31/2016 23
5/31/2016 21
8/18/2016 19
11/3/2016 19
2/2/2017 9.6
5/22/2017 11
8/17/2017 15
11/8/2017 17
2/20/2018 18
5/30/2018 16
8/3/2018 17
Source: am Consulting Engineers 2018
On February 2, 2016, the Stanislaus County DER issued Compliance Order No. DER‐16CO‐002 (CO#1) to the RPTCSD, which requires the RPTCSD to submit a final plan to correct the uranium exceedance problem, which is based on a running annual average, by April 18, 2016, and have all of the improvements constructed by July 1, 2018. Quarterly monitoring results and progress reports have been submitted to the Stanislaus County DER since CO#1 was issued. The RPTCSD has been working to apply for grant funding for a permanent solution to water quality issues since December 2018. In addition, the RPTCSD has increased usage rates to strengthen the stability of the water system until completion of the proposed project and a Consolidation Agreement with the City has been finalized. The RPTCSD continues to maintain the water system and will assist the community in transitioning to the City’s water system. The RPTCSD would dissolve after completion of the proposed project. Uranium concentrations in the groundwater have remained below the Maximum Contaminant Level since August 2016; however, the Stanislaus County DER and the SWRCB-DDW are still requiring the RPTCSD to address the uranium violations in the long term.

1.1 Project Location
The Riverdale Park Tract Water System Consolidation Project (project) area includes the RPTCSD service area, which is in unincorporated Stanislaus County in the sphere of influence of the incorporated city of Modesto (Figures 1 and 2). The project area is designated for Low Density Residential (LDR) and Urban Transition (UT) land uses within the Whitmore-Carpenter Comprehensive Planning District (Figure 3), as identified in the City of Modesto General Plan (City of Modesto 2019a). The project area is zoned Rural Residential (R-2) and General Agriculture 10 acre (A-2-10) in the Stanislaus County Zoning Ordinance (Stanislaus County 1993) (Figure 4).

1.2 Environmental Setting
The project area is generally developed with single-family residential development located south of the Tuolumne River in the City’s sphere of influence. The project footprint consists of existing developed and disturbed land.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
4 1.3 Project Description
In order to comply with the requirements of CO#1, the City proposes to replace and upgrade the RPTCSD water system in the Riverdale Park Tract neighborhood, and tie into the City’s water system near the intersection of Hatch and Carpenter Roads. The RPTCSD’s existing distribution system is shown on Figure 5, and project design plans are included in Appendix A. The proposed project includes the replacement of water mains, valves, fittings, and fire hydrants, where required. It is expected that the project will replace an existing 8-inch water main with approximately 1,500 linear feet of 12-inch water main along Hatch Road to provide additional supply to the community and replace approximately 8,000 linear feet of existing 6-inch and smaller pipes along Avondale, Greenlawn, and Riverdale Avenues with 8-inch mains. Water main replacements would occur within approximately 9,400 linear feet of the pipeline and would extend through most public streets within the community. The project includes destruction of the RPTCSD’s two existing wells per the California Health and Safety Code, Part 9.5, Section 115700.

Upon completion of these improvements, the City will install meters in the service connection boxes throughout neighborhood. Following installation of the new permanent connection and water meters, the City would supply water to the RPTCSD, and the Stanislaus County Local Agency Formation Commission (LAFCO) would dissolve the RPTCSD.

The proposed project would provide water that meets all current drinking water standards. The City has a larger water system with multiple wells and would be capable of responding to any future change in water quality. Because the City relies on multiple wells for water supply and has redundant wells, connecting to the City’s system would provide the most reliable water supply for the RPTCSD. The City is seeking funding through the Drinking Water State Revolving Fund (DWSRF) to support implementation of the proposed project. The City also has surface water supply provided by the Modesto Irrigation District and sourced from Don Pedro Reservoir, which allows the City to utilize a conjunctive use water supply program throughout its contiguous water system.

1.3.1 Construction
Construction of the proposed project is expected to begin by spring 2022 and last approximately 8 months (160 working days). Construction work would typically take place on weekdays between the hours of 7:00 a.m. and 5:00 p.m.; additional construction on weekends may also be necessary to avoid impacts and accommodate the project schedule and would generally occur between 8:00 a.m. and 4:00 p.m. No nighttime construction is anticipated.

All construction of distribution mains would be located within existing public rights-of-way, City property, or City easements. Installation of the pipelines would be accomplished using open trench construction. Construction of most sections of pipeline would require a 30-foot-wide construction corridor/easement to accommodate pipe storage and to allow trucks and equipment access along the trench. It is anticipated that excavation would be no more than 5 feet deep and 3 feet wide, depending on the pipe size, existing utility locations, and pipe bedding requirements. Some areas of the community are underlain by sugar sand, which would not be capable of supporting traditional methods of 5-foot-deep and 3-foot-wide trenches. In those areas, trenches are expected to open at a 1 to 1.5 ratio slope, or up to 12 feet wide, but would not exceed 12 feet. Open trench construction generally involves the following processes:
• Utility location/potholing;
• Saw cutting the pavement (as needed);
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
5 • Excavating a trench;
• Removing and stockpiling the soils;
• Installing the pipeline;
• Backfilling the trench and applying temporary paving; • Pressure testing and disinfecting the pipeline; and
• Repaving with permanent pavement.

Open-cut construction in existing roads would require cutting and removing pavement in existing paved areas as needed. Asphalt would be cut using large saw blades mounted on a special cart that would be pushed by a construction laborer. The asphalt would be lifted in large chunks and slabs from the cut area by a front-end loader or backhoe into a dump truck for off-hauling. The saw cutting operation would be relatively fast, with several hundred feet typically being cut within a few hours.

The open trench in which the pipeline would be constructed would be a minimum of approximately 36 inches wide to accommodate the new 12-inch-diameter pipeline. Pipeline staging would be located on roadways adjacent to the pipeline alignment. Prior to installation, sections of the pipeline would be laid out along the alignment. The pipeline would then be lowered into the trench, the trench would be backfilled, and sections of the pipeline would be pressure tested and disinfected through chlorination before repaving.

Repaving of disturbed roadway areas would occur after pipeline installation and testing. New asphalt or concrete pavement would be placed to match the surrounding road type. For asphalt repaving, a temporary asphalt material may be installed to allow traffic to use the roadway immediately after pipeline construction with permanent repaving near completion of the project. A repaving crew would follow the installation crew and prepare the road surface for repaving. Final repaving to restore all disturbed roadways would be done after pipeline installation and testing is completed.

The exact location of construction staging areas is not yet known; however, the proposed staging areas for construction materials and equipment for the proposed project would generally be located within existing City facilities, properties, and rights-of-way to the extent feasible. Staging areas may be located on Stanislaus County or RPTCSD property, or on private property pending an agreement with a vacant private property owner, as determined by the contactor and available land.

Demolition of a small pump house and three well tanks within the existing well site would require the use of a jack hammer and other small-powered equipment, approximately two work utility trucks, hauling trucks, dump trucks, eight slurry trucks, a semi-truck, a mini excavator, and a bobcat, and may use a drill rig to clear out any obstructions. Blasting activity for deconstruction is not anticipated. The tanks to be demolished are located at the well site and consist of three identical 9-foot-tall pressure tanks with 15,000-gallon storage capacity. Some materials within the pump house (pumping equipment, electronics, etc.) may be salvageable and could be sold and/or recycled in lieu of demolition and disposal. The total of demolished material is estimated to be 440 cubic yards and would be disposed of at a licensed disposal facility.

Equipment used during the construction phase would consist of an excavator, tractor trailer delivery trucks, a paver, a backhoe, a dump truck, a wheel roller, service trucks, a concrete saw, a vibratory compactor, a jackhammer, and various construction worker vehicles. A small truck-mounted drill rig and other equipment may be utilized to properly destroy the identified wells. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
6 Excavation, trenching, and grading activities would be necessary for construction of the proposed project.

Excavated materials resulting from site preparation would either be balanced on-site during construction or disposed of at an approved receiving facility. Additional truck trips would be necessary to deliver materials, equipment, and asphalt-concrete to the site. Street closures are not anticipated to be necessary during construction; however, traffic controls may be required in certain instances resulting in short delays to local traffic in the community during daily construction operations.

The City would replace the existing water meter box, install the new water meter box and water meter within 2 feet of the existing water meter box, and install new service line connections. In addition, existing on-site plumbing would be connected to the meter. Once the new permanent 12-inch connection is installed and all water supply services have been switched over to the City’s system, the RPTCSD’s existing waterlines and other underground appurtenances would be abandoned in place and existing service would be capped at the property lines. Additional excavation and staging are not required for abandonment and capping activities.

Temporary water shutoffs would occur during construction and would last a maximum of 4 hours. No other utility relocations or interruptions are proposed during construction.

1.3.2 Operation
The City’s Utilities Department will operate and maintain the consolidated water distribution system.

Regular maintenance activities for the proposed project would be conducted by one or two Utilities Department Water Services workers who would routinely inspect the water distribution facilities and connections for leaks, repair facilities on an as-needed basis, and conduct scheduled preventative maintenance procedures to keep the facilities in good working order. Operation and maintenance (O&M) would consist of exercising valves, conducting periodic inspection of appurtenances, flushing mains when necessary for water quality purposes, and conducting minor repairs as needed. Once operational, the proposed project would provide a reliable source of water supply that meets current drinking water standards. During operation, each residence would be responsible for the ongoing future maintenance of the connection after the meter is installed. The City would be responsible for future maintenance of the new City connection, fire hydrant, and pipeline infrastructure.

1.4 Project Objectives/Purpose and Need
The primary purpose of the proposed project is to provide a reliable source of fire flow water and drinking water supply to the Riverdale Park Tract that meets all current drinking water standards. The project is needed to comply with the requirements of CO#1, pursuant to the Stanislaus County DER and SWRCBDDW, to address the uranium violations in the long term.

The City has identified the following objectives for the proposed project:
• Provide a reliable source of drinking water supply to the Riverdale Park Tract that meets all current drinking water standards.
• Implement a long-term solution to meet the requirements of CO#1 and address and resolve the uranium violations of RPTCSD drinking water.
• Utilize existing RPTCSD distribution infrastructure to the extent feasible. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
7 1.5 Required Discretionary Approvals
The City is the Lead Agency, as defined by the California Environmental Quality Act (CEQA), for the proposed RPTCSD Water System Consolidation Project.

Table 3 summarizes the potential permits and/or approvals that may be required prior to construction of the proposed project. Additional local approvals and permits may also be required.

Table 3. Summary of Potential Permits and/or Approvals
Agency Type of Approval
California Division of Occupational Safety and Health Construction activities in compliance with California Division of Occupational Safety and Health safety requirements
California Department of Fish and Wildlife Streambed Alteration Agreements San Joaquin Valley Air Pollution Control District Authority to Construct, Permit to Operate, Dust Control State Water Resources Control Board California Water Code Section 1211 Change in Point of Discharge Stanislaus County Encroachment Permit – County Roads Construction/Grading Permit City of Modesto No Fee Encroachment Permit
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8 Figure 1. Project vicinity map.
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9 Figure 2. Project location map.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
10 Figure 3. Land use map.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
11 Figure 4. Zoning map.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
12 Figure 5. Proposed consolidation map.
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2 Riverdale Park Tract Community SeNices District Water System Consolidation Project Initial Study/Mitigated Negative Declaration

ENVIRONMENTAL CHECKLIST AND ENVIRONMENTAL

EVALUATION

ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED
The proposed project could have a "Potentially Significant Impact" for environmental factors checked below. Please refer to the attached pages for discussion on mitigation measures or project revisions to either reduce these impacts to less than significant levels or require further study.

Aesthetics Greenhouse Gas Emissions Public Services □ □ □ Agriculture and Forestry Hazards and Hazardous Recreation □ Resources Materials □ ~ Air Quality ~ Hydrology and Water Quality Transportation □ ~ Biological Resources ~ Land Use and Planning ~ Tribal Cultural Resources ~ Cultural Resources Mineral Resources Utilities and Service Systems □ Energy Noise Wildfire □ □ □ ~ Geology and Soils Population and Housing Mandatory Findings of □ Significance

ENVIRONMENTAL DETERMINATION
On the basis ofthis initial evaluation:

D I find that the proposed project COULD NOT have a significant effect on the environment, and a NEGATIVE DECLARATION will be prepared.
~ I find that although the proposed project could have a significant effect on the environment, there will not be a significant effect in this case because revisions in the project have been made by or agreed to by the project proponent. A MITIGATED NEGATIVE DECLARATION will be prepared.

D I find that the proposed project MAY have a significant effect on the environment, and an ENVIRONMENTAL IMPACT REPORT is required.

D I find that the proposed project MAY have a "potentially significant impact" or "potentially significant unless mitigated" impact on the environment, but at least one effect 1) has been adequately analyzed in an earlier document pursuant to applicable legal standards, and 2) has been addressed by mitigation measure based on the earlier analysis as described on attached sheets. An ENVIRONMENT AL IMP ACT REPORT is required, but it must analyze only the effects that remain to be addressed.

D I find that although the proposed project could have a significant effect on the environment, because all potentially significant effects (a) have been analyzed adequately in an earlier EIR or NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or mitigation measures that are imposed upon the proposed project, nothing further is required.

Date: Signed: 1-1:;_ - .2022..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
14 I. Aesthetics
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Except as provided in Public Resources Code Section 21099, would the project:
(a) Have a substantial adverse effect on a scenic vista? ☐ ☐ ☒ ☐ (b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic
buildings within a state scenic highway?
☐ ☐ ☐ ☒
(c) In non-urbanized areas, substantially degrade the
existing visual character or quality of public views of the site and its surroundings? (public views are those
that are experienced from publicly accessible vantage
point). If the project is in an urbanized area, would the project conflict with applicable zoning and other
regulations governing scenic quality?
☐ ☐ ☒ ☐
(d) Create a new source of substantial light or glare
which would adversely affect day or nighttime views in
the area?
☐ ☐ ☒ ☐
Setting
The project site is generally defined by the RPTCSD service area boundary and consists of a singlefamily residential development, as shown on Figure 5. The Riverdale Park Tract neighborhood is located southwest of Modesto and is within the City’s sphere of influence. The neighborhood consists of lowdensity residential units in an area that is zoned as Low Density Residential (LDR) and Urban Transition (UT) within the Whitmore-Carpenter Comprehensive Planning District, as identified in the City of Modesto General Plan (City of Modesto 2019a) (see Figure 3) and Rural Residential (R-2) and General Agriculture 10 acre (A-2-10) in the Stanislaus County Zoning Ordinance (Stanislaus County 1993) (see Figure 4). The project site is surrounded by the Tuolumne River, undeveloped land, and single-family residential development in the city of Modesto to the north, and undeveloped land and agricultural land uses to the east, west, and south. The region surrounding the city is primarily characterized by agricultural and industrial land uses that are visible from State Route 99 (SR 99) and Southern Pacific Railroad (SPRR) routes that run northwest to southeast. The project site is located approximately 3.5 miles east of SR 99 and the nearest SPRR line. The floodplains of the Tuolumne and Stanislaus Rivers create natural greenbelts within the city’s urban area.

Environmental Evaluation
a) Would the project have a substantial adverse effect on a scenic vista? The project site is located southwest of Modesto and within the City’s sphere of influence.

Implementation of the project would not obstruct any potential viewing points of Tuolumne River as the majority of the project would be underground except for small above ground features including fire hydrants, service connection boxes, and necessary pumps (see Figure 5).

Ground disturbance and construction associated with the project is limited to excavation of a 32-inch open trench along the project area to accommodate the new 12-inch pipeline (see Figure 5). Pipeline staging would be located on roadways adjacent to the pipeline alignment. Once pipeline installation is complete, open trenches would be backfilled and roadways would be repaved and returned to #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
15 preconstruction conditions. The project would replace the existing water system that surrounds the developed neighborhood and would not result in the construction of new buildings or structures that would create a long-term visual effect on the project area. Aboveground structures that would be developed in association with the project include fire hydrants and service connection boxes where necessary and would be consistent with the existing water system. Therefore, project implementation would not change or impede scenic views in the area. Pipelines would be installed underground, and the pavement of new roads would be consistent with the existing roads in the project’s immediate vicinity.

Impacts associated with the installation of upgraded pipelines would be less than significant. b) Would the project substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway?
The project site is located southwest of Modesto and within the City’s sphere of influence. There are no state-designated scenic highways located in Modesto or in the City’s planning area (Caltrans 2020). The project would not damage scenic resources within a state scenic highway; therefore, there would be no impact.
c) In non-urbanized areas, would the project substantially degrade the existing visual character or quality of public views of the site and its surroundings? (public views are those that are experienced from publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality?
The project proposes to replace and upgrade the existing RPTCSD water system in the Riverdale Park Tract neighborhood, which includes the replacement of water mains, valves, fittings, and fire hydrants, where required. The project does not propose the construction of new structures that have the potential to change the visual character in the immediate or surrounding area. Aboveground structures that would be developed in association with the project include fire hydrants and service connection boxes, where necessary, and would be consistent with the existing land use. Pipelines would be installed underground, and the repaving of roads disturbed during project construction would be consistent with the existing roads in the project’s immediate vicinity. Therefore, project implementation would not change or degrade the existing visual character or quality of the area.

The project has the potential to create short-term construction-related impacts to views in existing public rights-of-way, City property, and City easements. Construction activities would be visible from surrounding residences during the short-term construction period and would include the presence of construction equipment, vehicles, staging areas, construction materials, and 32-inch-wide open trenches.

Associated signage or traffic cones may be necessary for safety during the construction period. All trenches for underground distribution pipelines would be backfilled and returned to preconstruction conditions. Impacts to the visual character or quality of the project area would be short term (approximately 8 months) and would not substantially degrade the long-term existing character of the immediate or surrounding area. Therefore, project impacts would be less than significant. d) Would the project create a new source of substantial light or glare which would adversely affect day or nighttime views in the area?
Project construction would occur on weekdays between 7:00 a.m. and 7:00 p.m. and no nighttime construction is expected to occur. The project does not propose any development that would create new or additional nighttime lighting in the area; therefore, project impacts would be less than significant. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
16 Conclusion
The project would not substantially affect a scenic vista, damage a scenic resource, conflict with zoning, or create a source of new light or glare; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

II. Agriculture and Forestry Resources
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Dept. of Conservation as an optional model to use in assessing impacts on agriculture and farmland. In determining whether impacts to forest resources, including timberland, are significant environmental effects, lead agencies may refer to information compiled by the California Department of Forestry and Fire Protection regarding the state’s inventory of forest land, including the Forest and Range Assessment Project and the Forest Legacy Assessment project; and forest carbon measurement methodology provided in Forest Protocols adopted by the California Air Resources Board. Would the project:
(a) Convert Prime Farmland, Unique Farmland, or
Farmland of Statewide Importance (Farmland), as
shown on the maps prepared pursuant to the
Farmland Mapping and Monitoring Program of the
California Resources Agency, to non-agricultural use?
☐ ☐ ☐ ☒
(b) Conflict with existing zoning for agricultural use, or a Williamson Act contract?
☐ ☐ ☐ ☒
(c) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code
section 12220(g)), timberland (as defined by Public
Resources Code section 4526), or timberland zoned
Timberland Production (as defined by Government
Code section 51104(g))?
☐ ☐ ☐ ☒
(d) Result in the loss of forest land or conversion of forest land to non-forest use?
☐ ☐ ☐ ☒
(e) Involve other changes in the existing environment
which, due to their location or nature, could result in conversion of Farmland, to non-agricultural use or
conversion of forest land to non-forest use?
☐ ☐ ☐ ☒
Setting
The California Department of Conservation (DOC) classifies and maps agricultural lands in the state through the Farmland Mapping and Monitoring Program (FMMP). The FMMP identifies five farmland categories: Prime Farmland, Farmland of Statewide Importance, Unique Farmland, Farmland of Local Importance, and Farmland of Local Potential. The DOC Important Farmland Finder designates the project area as urban and built-up land surrounded by nonagricultural or natural vegetation to the north and Prime farmland to the southwest and southeast (DOC 2020).
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
17 The project site is zoned R-2 and A-2-10 in the Stanislaus County Zoning Ordinance (Stanislaus County 1993). The project site is not located within or immediately adjacent to land zoned for agricultural uses, land under an active Williamson Act contract, or land currently supporting agricultural uses.

Environmental Evaluation
a) Would the project convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use?
The project area is developed with existing single-family residential development and associated infrastructure improvements. The project includes improvements to the existing water distribution system within existing developed and disturbed areas designated as urban and built-up land. The project would not result in the conversion of or other impacts to prime farmland, unique farmland, or farmland of statewide importance; therefore, no impact would occur. b) Would the project conflict with existing zoning for agricultural use, or a Williamson Act contract?
The project area is zoned R-2 and A-2-10 in the Stanislaus County Zoning Ordinance (see Figure 4).

According to the Data Basin Map for Stanislaus County, the Riverdale Park Tract neighborhood is not currently under a Williamson Act contract (Conservation Biology Institute 2015). Proposed construction activities along the eastern portion of West Hatch Road in the project area would occur adjacent to a parcel currently under a Williamson Act contract; however, the project would not be located on the parcel and does not propose any features that would convert agricultural land to nonagricultural uses or conflict with a Williamson Act contract. The project would replace the existing water system and fire hydrants, water pumps, and service connection boxes, where necessary. There are no fire hydrants or other aboveground features located on the parcel under the Williamson Act that would need to be replaced. The proposed project is consistent with Stanislaus County’s current zoning standards and the project area is not under a Williamson Act contract; therefore, no impacts would occur. c) Would the project conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code section 12220(g)), timberland (as defined by Public Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g))? The project area is zoned R-2 and A-2-10 in the Stanislaus County Zoning Ordinance (see Figure 4). The project area is not zoned forest land, timberland, or timberland production. Project activities would not conflict with existing zoning or result in the rezoning of forest land or timberland; therefore, no impact would occur.
d) Would the project result in the loss of forest land or conversion of forest land to non-forest use?
As discussed previously, the project site consists of developed single-family residences and land zoned for rural residential and agricultural land uses. The project would occur within a developed neighborhood and would not result in the conversion of forest land to non-forest use; therefore, no impact would occur. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
18 e) Would the project involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to nonagricultural use or conversion of forest land to non-forest use? The project would result in the construction and operation of an upgraded water supply system that would supply existing residences with reliable drinking water from the City. All project activities would occur within previously developed areas and construction and operation of the project would not result in any off-site or other indirect impacts to surrounding lands that are designated prime farmland or active agricultural land uses. The project would not convert farmland to non-agricultural use or forest land to non-forest use; therefore, no impact would occur.

Conclusion
The project would not convert Farmland, conflict with existing zoning or a Williamson Act contract, result in the loss or conversion of forest land or timberland, or result in other changes which could result in conversion of Farmland or forest land; therefore, no impact would occur, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

III. Air Quality
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the following determinations. Would the project:
(a) Conflict with or obstruct implementation of the
applicable air quality plan? ☐ ☐ ☒ ☐
(b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is
non-attainment under an applicable federal or state
ambient air quality standard?
☐ ☒ ☐ ☐
(c) Expose sensitive receptors to substantial pollutant concentrations?
☐ ☒ ☐ ☐
(d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of
people?
☐ ☐ ☒ ☐
Setting
Modesto is under the jurisdiction of the San Joaquin Valley Air Pollution Control District (SJVAPCD).

The San Joaquin Valley is in nonattainment for the standards established for fine particulate matter (particulate matter less than or equal to 2.5 micrometers in diameter PM2.5) and 8-hour ozone (U.S.

Environmental Protection Agency [USEPA] 2020).
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
19 Environmental Evaluation
a) Would the project conflict with or obstruct implementation of the applicable air quality plan?
The SJVAPCD developed a Clean Air Plan (CAP) that utilizes extensive science and research, state of the art air quality management, and the best available information in developing a strategy to attain the federal health-based 1997, 2006, and 2012 national ambient air quality standards (NAAQS) for PM2.5 as expeditiously as possible (SJVAPCD 2018). The San Joaquin Valley is one of the fastest growing regions in the state, and the California Department of Finance (DOF) projects that the population of the valley will increase by 19.3% between 2015 and 2030, while the state of California is only projected to increase by 12.5% in that same period (SJVAPCD 2018). An increase in population generally means there will be an increase in air pollutant emissions and vehicle miles traveled (VMT) (SJVAPCD 2018).

Implementation of the project is not anticipated to conflict with the CAP because the project is limited to construction and operation of an upgraded water distribution system that would supply potable drinking water to residents within the Riverdale Park Tract neighborhood. The project would not result in the construction of buildings or structures that will directly increase the population in the region. Project construction is expected to use workers from the local workforce and project operation would use existing City employees for maintenance.

The City of Modesto General Plan establishes goals and policies to reduce emissions from building projects, VMT, and other land uses in the city (City of Modesto 2019a). Some standards include the creation of complete streets, creating mixed-use downtown areas, and transit services. Implementation of the project is not anticipated to conflict with policies in the City’s General Plan because the project is limited to construction and operation of an upgraded water distribution system within the Riverdale Park Tract neighborhood. Project construction would result in a short-term increase in vehicle trips to the project area but is not expected to exceed 110 trips per day and would be considered to have a less-thansignificant impact on VMT (California Governor’s Office of Planning and Research [OPR] 2018). Project operation would be limited to infrequent trips by City employees to conduct maintenance activities on an as-needed basis. As a result, project operation is not anticipated to exceed 110 trips per day and would be considered to have a less-than-significant impact on VMT (OPR 2018). The proposed project is not anticipated to conflict with the SJVAPCD CAP or with the goals and policies of the General Plan; therefore, impacts from the project are considered less than significant. b) Would the project result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard?
The San Joaquin Valley is in nonattainment for the standards established for PM2.5 and 8-hour ozone (USEPA 2020). Implementation of the proposed project has the potential to generate emissions during construction of the project (short-term emissions) and during operation of the proposed facilities (longterm emissions).

SHORT-TERM EMISSIONS
Heavy equipment and earth-moving construction activities generate fugitive dust and combustion emissions. These may have substantial temporary impacts on local air quality. Fugitive dust emissions would result from land clearing, demolition, excavation, trenching, grading activities, and trip generation.

Combustion emissions, such as nitrogen oxide (NOX) and particulate matter less than or equal to 10 micrometers in diameter (PM10), are most significant when using large diesel-fueled scrapers, loaders, bulldozers, haul trucks, compressors, generators, and other types of equipment. As discussed previously, construction of the proposed project would include the use of hand-operated equipment (e.g., hand saws, #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
20 compactors, etc.), off-road flatbed delivery and dump trucks, a backhoe, an excavator, a rubber-tire dozer, a compactor, a crane, a water truck, a concrete mixer truck, a paver, and various passenger vehicles, which could generate combustion emissions.

Estimated construction air emissions were calculated for the proposed project using the California Emissions Estimator Model (CalEEMod). The CalEEMod results are included in Appendix B, and the results of the unmitigated estimated construction emission calculations for the proposed project are shown in Table 4.

Table 4. Annual Construction Emissions for the Proposed Project Source
Criteria Pollutant (TPY)
ROG NOx CO SOx PM10 PM2.5
Project Construction 0.28 2.89 1.93 0.004 0.62 0.39
SJVAPCD Threshold 10 10 100 27 15 15
Exceed threshold? No No No No No No
Source: CalEEMod 2021
Based on the results shown in Table 4, construction air emissions would be in compliance with the SJVAPCD thresholds for all pollutants. Descriptions of the pollutants identified in Table 4 are provided below.

Ozone
Ozone occurs in two layers of the atmosphere. The layer surrounding the earth’s surface is the troposphere. Here, at ground level, troposphere, or “bad,” ozone is an air pollutant that damages human health, vegetation, and many common materials. It is a key ingredient of urban smog. The troposphere extends to a level about 10 miles up where it meets the second layer, the stratosphere. The stratospheric or “good” ozone layer extends upward from about 10–30 miles and protects life on earth from the sun’s harmful ultraviolet rays.
“Bad” ozone is what is known as a photochemical pollutant. It needs reactive organic gases (ROGs), NOx, and sunlight to form. ROG and NOx are emitted from various sources throughout Stanislaus County. Significant ozone formation generally requires an adequate number of precursors in the atmosphere and several hours in a stable atmosphere with strong sunlight. To reduce ozone concentrations, it is necessary to control the emissions of these ozone precursors.

Ozone is a regional air pollutant. It is generated over a large area and transported and spread by the wind.

As the primary constituent of smog, ozone is the most complex, difficult to control, and pervasive of the criteria pollutants. Unlike other pollutants, it is not emitted directly into the air by specific sources but is created by sunlight acting on other air pollutants (the precursors), specifically NOx and ROG. Sources of precursor gases number in the thousands and include common sources, such as consumer products, gasoline vapors, chemical solvents, and combustion byproducts of various fuels. Originating from gas stations, motor vehicles, large industrial facilities, and small businesses such as bakeries and dry cleaners, the ozone-forming chemical reactions often take place in another location, catalyzed by sunlight and heat.

Thus, high ozone concentrations can form over large regions when emissions from motor vehicles and stationary sources are carried hundreds of miles from their origins. Based on proposed grading estimates, construction emissions would not result in an exceedance of significance thresholds for ROG or NOX (see Table 4). All equipment used for the construction of the proposed project would meet the SJVAPCD Tier #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
21 2 standard or better to ensure construction activities would not exceed the SJVAPCD thresholds for ROG or NOX.

Combustion Emissions
Combustion emissions (ROG and NOx) are most significant when using large diesel-fueled scrapers, loaders, bulldozers, haul trucks, compressors, generators, and other heavy equipment. Emissions can vary substantially from day to day, depending on the level of activity and the specific type of operation. ROGs and NOX are the critical pollutants caused by construction work because of the high output of these pollutants by heavy diesel equipment normally used in grading operations. Based on proposed grading estimates, construction emissions would not result in an exceedance of significance thresholds for ROG or NOX (see Table 4). All equipment used for the construction of the proposed project would meet the SJVAPCD Tier 2 standard or better to ensure construction activities would not exceed the SJVAPCD thresholds for ROG or NOX.

Carbon Monoxide
Carbon monoxide (CO), an odorless, colorless, poisonous gas that is highly reactive, is emitted by mobile and stationary sources as a result of incomplete combustion of hydrocarbons or other carbon-based fuels.

CO is a byproduct of motor vehicle exhaust, which contributes more than 66% of all CO emissions nationwide. In cities, automobile exhaust can cause as much as 95% of all CO emissions. These emissions can result in high concentrations of CO, particularly in local areas with heavy traffic congestion. Other sources of CO emissions include industrial processes and fuel combustion in sources such as boilers and incinerators. Despite an overall downward trend in concentrations and emissions of CO, some metropolitan areas still experience high levels of CO. High CO concentrations develop primarily during winter when periods of light winds combine with the formation of ground-level temperature inversions (typically from the evening through early morning). These conditions result in reduced dispersion of vehicle emissions. Motor vehicles also exhibit increased CO emission rates at low air temperatures. As shown in Table 4, CO emissions associated with project construction would not exceed established SJVAPCD thresholds.

Sulfates
Sulfates (SO4
-2) are particulate products that come from the combustion of sulfur-containing fossil fuels.

When sulfur monoxide (SO) or sulfur dioxide (SO2) is exposed to oxygen, it precipitates out into sulfates (SO3 or SO4). Sulfates are the fully oxidized ionic form of sulfur. Sulfates occur in combination with metal and/or hydrogen ions. In California, emissions of sulfur compounds occur primarily from the combustion of petroleum-derived fuels (e.g., gasoline, diesel fuel) that contain sulfur. This sulfur is oxidized to SO2 during the combustion process and subsequently converted to sulfate compounds in the atmosphere. The conversion of SO2 to sulfates takes place comparatively rapidly and completely in urban areas of California because of regional meteorological features. As shown in Table 4, SOX emissions associated with project construction would not exceed established SJVAPCD thresholds.

Particulate Matter
Particulate matter (PM10 and PM2.5) pollution consists of very small liquid and solid particles floating in the air. Some particles are large and dark enough to be seen as soot or smoke, and others are so small they can be detected only with an electron microscope. Particulate matter is a mixture of materials that can include smoke, soot, dust, salt, acids, and metals. Particulate matter also forms when gases emitted from motor vehicles and industrial sources undergo chemical reactions in the atmosphere. PM10 refers to particles less than or equal to 10 microns in aerodynamic diameter. PM2.5 refers to particles less than or equal to 2.5 microns in aerodynamic diameter and is a subset of PM10. Particulate matter or airborne dusts #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
22 are the small particles that remain suspended in the air for long periods of time. Particulates of concern are PM10 and PM2.5, which are small enough to be inhaled, pass through the respiratory system, and lodge in the lungs, possibly leading to adverse health effects.

The composition of PM10 and PM2.5 can vary greatly with time, location, the sources of the material, and meteorological conditions. Dust, sand, salt spray, metallic and mineral particles, pollen, smoke, mist, and acid fumes are the main components of PM10 and PM2.5. In addition to those listed previously, secondary particles can also be formed as precipitates from photochemical reactions of gaseous SO2 and NOX in the atmosphere to create sulfates (SO4) and nitrates (NO3), respectively. Secondary particles are of greatest concern during the winter months when low inversion layers tend to trap the precursors of secondary particulates.

In the western United States, there are sources of PM10 in both urban and rural areas. PM10 and PM2.5 are emitted from stationary and mobile sources, including diesel trucks and other motor vehicles; power plants; industrial processes; wood-burning stoves and fireplaces; wildfires; dust from roads, construction, landfills, and agriculture; and fugitive windblown dust. Because particles originate from a variety of sources, their chemical and physical compositions vary widely. As shown in Table 4, total PM2.5 and PM10 emissions associated with project construction would not exceed established SJVAPCD thresholds.

Diesel Particulate Matter
Although construction activities would not exceed daily thresholds for diesel particulate matter (DPM), as shown in Table 4, the proposed project would occur in developed areas in the vicinity of residential development, resulting in the potential for exposure of humans to DPM. Implementation of standard SJVAPCD measures would mitigate this impact.

Fugitive Dust
Heavy equipment used to perform ground-disturbing construction activities would generate fugitive dust, resulting in temporary impacts. Fugitive dust emissions would result from land clearing and excavation, grading, and trenching activities. Although emissions would not exceed SJVAPCD thresholds, impacts from fugitive dust emissions would be potentially significant because they could cause a public nuisance or exacerbate the existing PM10 non-attainment status. Standard dust control mitigation measures are included to minimize impacts to sensitive receptors; therefore, impacts would be less than significant with mitigation.

LONG-TERM EMISSIONS
Operational emissions associated with the project would be limited to emissions from infrequent trips by City employees for maintenance activities on an as-needed basis. To conservatively capture emissions, it is assumed two trips would occur each month, resulting in 24 trips per year; however, actual trips for maintenance activities are not expected to be that frequent. Estimated operational air emissions were calculated for the proposed project using the CalEEMod (see Appendix B). The results of the unmitigated estimated operational emission calculations for the proposed project are shown in Table 5. It should be noted that the results are based on conservative estimations provided by the City and by the CalEEMod defaults; therefore, it is possible that project operation emissions may vary.

The threshold criteria established by the SJVAPCD to determine the significance and appropriate mitigation level for long-term operational emissions (i.e., vehicular and area source emissions) from the project are presented in Table 5. Emissions that equal or exceed the designated threshold levels are considered potentially significant and should be mitigated. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
23 Table 5. Annual Operational Emissions for the Proposed Project Source
Criteria Pollutant (tons per year))
ROG NOx CO SOx PM10 PM2.5
Project Operation 0.002 0.0002 0.02 0.00 0.0001 0.0001
SJVAPCD Threshold 10 10 100 27 15 15
Exceed threshold? No No No No No No
Source: CalEEMod 2021
Based on the results shown in Table 5, even under the worst-case scenario conditions, operational air emissions would not exceed any SJVAPCD thresholds. Operational emissions and activities are not anticipated to create a nuisance for surrounding sensitive receptors. Therefore, operational impacts would be less than significant.
c) Would the project expose sensitive receptors to substantial pollutant concentrations?
The project area is comprised of the Riverdale Park Tract neighborhood, which includes single-family residential units. The nearest sensitive receptors to the project area are the surrounding residents within 50 to 300 feet of the proposed work areas located on Parkdale Drive and on West Hatch Road and the residents in the central portion of the neighborhood on West Hatch Road. The proposed project has the potential to expose surrounding residents to short-term construction-related emissions. As discussed in Impact Discussion III(b) above, construction of the project would generate emissions including DPM and fugitive dust. Construction and operational emissions would not exceed SJVAPCD thresholds; however, due to the proximity of sensitive receptors, compliance with the SJVAPCD Standard Regulation VIII Control Measures and Mitigation Measure AQ-1 would be implemented to reduce the potential for a nuisance and exposure to DPM and fugitive dust. Therefore, potential impacts would be less than significant with mitigation.
d) Would the project result in other emissions (such as those leading to odors) adversely affecting a substantial number of people?
An odor characteristically has three significance thresholds. The first threshold is the detection threshold, which is the minimum amount of odor-free dilution air needed to prevent an individual from detecting the odor. The detection threshold is the point where an individual detects an odor; this threshold varies for each individual. The second threshold, the recognition threshold, occurs at lower dilutions (higher concentrations). At the recognition threshold, other odor parameters, such as odor character and relative pleasantness, are noticeable. The third threshold is called the annoyance threshold. The annoyance threshold is at or above the recognition threshold. At the annoyance threshold, people complain about an odor; this can even occur when the odor is pleasant. For example, a person passing by an industrial bakery or chocolate factory may experience the odor as pleasant; however, individuals living near these facilities and constantly subjected to the odor may consider it a nuisance. Although construction activities may result in odor associated with DPM emissions from construction equipment, odors are expected to be minimal and temporary as they would only occur during construction when equipment is being used.

Operation of the project would not generate odors. Based on the limited nature of construction and operational activities, implementation of the proposed project would not result in significant odors affecting the surrounding area; therefore, impacts would be less than significant. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
24 Conclusion
The project is not anticipated to conflict with the SJVAPCD CAP or with the goals and policies of the General Plan, it would not exceed any SJVAPCD thresholds for construction or operational emissions and would not result in other emissions (such as odor) that could adversely affect a substantial number of people. Although emissions would not exceed SJVAPCD thresholds, impacts from fugitive dust emissions would be potentially significant because they could cause a public nuisance or exacerbate the existing PM10 non-attainment status. The project’s special provisions and specifications require compliance with the SJVAPCD Standard Regulation VIII Control Measures and standard mitigation is included to ensure compliance with permitting requirements; therefore, impacts would be less than significant with mitigation.

Mitigation Measures
AQ-1 Permit Requirements. Prior to ground disturbance and construction, the Construction Contractor shall obtain all required permits for dust control and the use of portable equipment, 50 horsepower or greater, from the SJVAPCD. Upon application for construction permits, all required mitigation measures shall be shown on all applicable grading or construction plans and implemented during all applicable grading and construction activities.

IV. Biological Resources
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Have a substantial adverse effect, either directly or through habitat modifications, on any species
identified as a candidate, sensitive, or special status species in local or regional plans, policies, or
regulations, or by the California Department of Fish
and Game or U.S. Fish and Wildlife Service?
☐ ☒ ☐ ☐
(b) Have a substantial adverse effect on any riparian
habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US
Fish and Wildlife Service?
☐ ☒ ☐ ☐
(c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to,
marsh, vernal pool, coastal, etc.) through direct
removal, filling, hydrological interruption, or other
means?
☐ ☒ ☐ ☐
(d) Interfere substantially with the movement of any
native resident or migratory fish or wildlife species or with established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery sites?
☐ ☒ ☐ ☐
(e) Conflict with any local policies or ordinances
protecting biological resources, such as a tree
preservation policy or ordinance?
☐ ☒ ☐ ☐
#14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
25 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(f) Conflict with the provisions of an adopted Habitat
Conservation Plan, Natural Community Conservation
Plan, or other approved local, regional, or state
habitat conservation plan?
☐ ☒ ☐ ☐
Setting
A literature review was conducted for the project site using the California Department of Fish and Wildlife (CDFW) California Natural Diversity Database (CNDDB), The U.S. Fish and Wildlife Service (USFWS) Information for Planning and Consultation (IPaC) online tool, and the National Marine Fisheries Service (NMFS) Google Earth species list tool. Unofficial species lists were generated from each of these three agencies and are included in Appendix C. Based on the literature review, designated critical habitat for California Central Valley steelhead and essential fish habitat for Chinook salmon is present in the Tuolumne River corridor north of the project site and 10 special-status plants, four specialstatus mammals, two special-status reptiles, three special-status amphibians, three special-status fish, four special-status insects, five special-status crustaceans, nine special-status birds, and migratory birds are considered to have the potential to occur in the project area and/or have documented occurrences within 10 miles of the project site.

A biological reconnaissance survey was conducted within the project site by SWCA Environmental Consultants (SWCA) Senior Biologist John Moule on November 24, 2020, to assess the habitat conditions and biological resources present within the project area. Based on observations made during the reconnaissance survey, the entire project area is heavily disturbed (e.g., the project area has a long history of residential and agricultural activity) and is comprised entirely of paved roads, ornamental/garden vegetation and trees, ruderal/disturbed vegetation, bare ground, and residential development.

The disturbed nature of the project site and the habitat types on-site do not provide ideal conditions for special-status plants to occur, and no special-status plant species were observed. Based on habitat conditions observed within the project site, SWCA determined that terrestrial animal species, several species of bats (Order Chiroptera), and nesting birds (Class Aves) have potential to occur within the project area. Although these species may occur within or adjacent to the project area, these species were not observed during the biological reconnaissance survey conducted on November 24, 2020.

Environmental Evaluation
a) Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Game or U.S. Fish and Wildlife Service?

SPECIAL-STATUS PLANT SPECIES
Although the biological reconnaissance survey was conducted outside of the blooming period for most local sensitive plant species, there is a very low potential for any sensitive plant species to occur within the project area due to the absence of suitable habitat. Additionally, no tree trimming or vegetation removal activities are required for implementation of the project. All project activities would occur within #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
26 existing developed and disturbed areas; therefore, impacts to special-status plant species are not expected and impacts would be less than significant.

SPECIAL-STATUS ANIMAL SPECIES
Although the project site is comprised of disturbed and developed areas and does not support suitable habitat for special-status animals, the potential for special-status animal species to occur cannot be ruled out due to their transitory nature. Surrounding trees and water in the Tuolumne River corridor adjacent to the project area are relatively undisturbed and undeveloped. With habitat of moderate quality nearby, there is a probability for special-status animal species to occur; however, due to the proximity of anthropogenic barriers (e.g., residential fences, development, noise, street traffic), the presence of these species is expected to be low.

The project site does not contain any aquatic resources; therefore, fish and fully aquatic species identified in the literature review would not be directly or indirectly impacted by the proposed project as work would occur within developed and disturbed areas.

Four sensitive insect species identified in the literature review as having the potential to occur in the project vicinity include: obscure bumble bee (Bombus caliginosus), Crotch bumble bee (Bombus crotchii), valley elderberry longhorn beetle (Desmocerus californicus dimorphus), and Moestan blister beetle (Lytta moesta). Bumble bees are not anticipated to be impacted by the proposed project as they would fly away if disturbed and the project area does not support habitat suitable for nests, which are typically located underground in abandoned rodent nests, or above ground in tufts of grass, old bird nests, rock piles, or cavities in dead trees. The valley elderberry longhorn beetle is always found on or close to its host plant, red or blue elderberry (Sambucus species) and would simply fly away if disturbed. No elderberry plants are present within the project site; therefore, the project would not result in adverse impacts to suitable habitat for valley elderberry longhorn beetle. The project area does not support grassland habitat suitable for Moestan blister beetle; therefore, this species is not expected to occur within the project area or be impacted by the project.

The developed and disturbed areas within the project area that would be disturbed during construction do not provide suitable habitat for special-status reptiles identified through the literature review, giant garter snake (Thamnophis gigas) and Northern California legless lizard (Anniella pulchra); therefore, impacts to these species are not expected to occur.

Several terrestrial and semiaquatic animal species, including federally and state-listed species such as:

San Joaquin Valley woodrat (Neotoma fuscipes riparia), San Joaquin kit fox (Vulpes macrotis mutica), riparian brush rabbit (Sylvilagus bachmani riparius), western spadefoot (Spea hammondii), California tiger salamander (Ambystoma californiense), and California red-legged frog (Rana draytonii) were identified in the literature review as having the potential to occur in the project area. These species use aquatic, riparian, and upland habitats for foraging, shelter, cover, and dispersal movements. These species could occur on-site while moving through or foraging in the project area, or may reside in upland refugia, including ground burrows, under debris, and under manmade features. Since direct impacts are anticipated to occur only within paved areas and bare ground, it is not anticipated that sites of refuge would be disturbed, demolished, or buried as a result of ground-disturbing construction activities.

However, it is possible that these species may become trapped in open trenches if they move through the project site during construction. Mitigation Measures BIO-1 through BIO-4 have been included to avoid and/or minimize potential impacts to these species during construction activities.

The project area provides suitable nesting habitat for various bird species protected under the federal Migratory Bird Treaty Act (MBTA) and roosting habitat for several bat species considered under CEQA.

Common passerines and raptors may use trees within the project area for foraging and or nesting. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
27 Roosting bat species could use trees and structures for roosting. Nesting habitat and roosting habitat can be impacted by project activities, including noise or other disturbances; however, the intensity and cumulative sound and disturbance impacts resulting from construction are unlikely to substantially exceed existing levels of disturbance associated with the residential neighborhood. Pre-disturbance surveys for nesting birds and roosting bats are not necessary, as birds of bats choosing to nest or roost in the project area would already be adapted to anthropomorphic disturbances and the project would not require the modification or removal of existing trees, vegetation, or structures that could be used by birds or bats. No additional studies or mitigation measures are necessary.

In conclusion, due to the disturbed and developed conditions present at the project site, suitable habitat is not present for special-status plants or animals. However, due to their transitory nature, it is possible that special-status terrestrial species and nesting birds have the potential to occur within the project site.

Mitigation has been included to minimize the potential for special-status animals to be impacted during construction; therefore, impacts would be less than significant with mitigation. b) Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife Service?
The Tuolumne River and its riparian corridor are adjacent to the northern boundary of project area and are under the jurisdiction of the U.S. Army Corps of Engineers (USACE), California Department of Fish and Wildlife (CDFW), and Regional Water Quality Control Board (RWQCB). The Tuolumne River corridor is also designated as critical habitat for California Central Valley steelhead and as essential fish habitat for Chinook salmon. Proposed work areas, staging areas, and areas of direct disturbance are all located outside the jurisdictional boundaries of the Tuolumne River. The project, as proposed, would not encroach upon these jurisdictions or result in direct impacts to this sensitive natural community. With implementation of Mitigation Measures BIO-3 and BIO-4, the proposed project would not result in any offsite impacts to jurisdictional riparian habitat; therefore, impacts would be less than significant with mitigation.
c) Would the project have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? As described under Impact Discussion IV(b), the Tuolumne River and its riparian corridor are adjacent to the northern boundary of the project area and are under the jurisdiction of the USACE, CDFW, and RWQCB. Work areas, staging areas, and areas of direct disturbance are all outside the jurisdictional boundaries of the Tuolumne River, and the project would not encroach on these jurisdictions. With implementation of Mitigation Measures BIO-3 and BIO-4, the proposed project would not result in direct or indirect impacts to jurisdictional wetlands or riparian habitat; therefore, impacts would be less than significant with mitigation.
d) Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? The northern portion of the project area is located along the Tuolumne River, which serves as a wildlife corridor for migratory fish and other aquatic species. Ground disturbance is not proposed within the Tuolumne River or its riparian corridor and the project would not impede drainage patterns associated with the river; therefore, the proposed project is not anticipated to result in direct impacts associated with the movement of resident or migratory fish or wildlife species. Project construction along the Tuolumne #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
28 River has the potential to create indirect effects to wildlife corridors associated with the Tuolumne River.

Implementation of Mitigation Measure BIO-4 would minimize potential impacts associated with excavation and other ground-disturbing activities to the Tuolumne River; therefore, impacts would be less than significant with mitigation.
e) Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? The City of Modesto General Plan Environmental Resources, Open Space and Conservation Element (Chapter VII) does not include a tree preservation policy; however, the General Plan does require protection of sensitive species and sensitive habitats as described in the City’s Final Master Plan EIR. The project would not require vegetation or tree removal or trimming and no impacts to natural communities are anticipated. Implementation of Mitigation Measures BIO-1 through BIO-4 would ensure potential impacts to special-status species during construction are avoided and the project does not conflict with local policies and ordinances intended to protect biological resources; therefore, impacts would be less than significant with mitigation.
f) Would the project conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan?
There are no habitat conservation plans or natural community conservation plans that apply to the project area. Implementation of Mitigation Measures BIO-1 through BIO-4 would ensure potential impacts to special-status species during construction are avoided and the project does not conflict with local policies and ordinances intended to protect biological resources. Therefore, impacts would be less than significant with mitigation.

Conclusion
Due to the disturbed and urban conditions present at the project site, suitable habitat is not present for special-status plants or animals; however, due to their transitory nature, it is possible that special-status terrestrial species and nesting birds have the potential to occur within the project site. Mitigation has been included to minimize the potential for special-status animals to be impacted during construction.

Mitigation has also been included to minimize potential indirect impacts to off-site sensitive natural communities, wetlands, and wildlife corridors; therefore, impacts would be less than significant with mitigation.

Mitigation Measures
BIO-1 At the end of each working day, the Construction Contractor shall take measures to prevent the entrapment of animals in all excavated, steep-walled holes or trenches more than 2 feet deep. Such measures shall include covering excavations with plywood or providing dirt or plank escape ramps from the trenches.

BIO-2 Prior to, during, and after the site-disturbance and/or construction phase, if needed, the use of pesticides shall follow all federal, state, and local regulations. Anti-coagulant rodenticides such as brodifacoum, bromadiolone, difethialone, and difenacoumare are prohibited. This is necessary to minimize the probability of primary or secondary poisoning of special-status animals, such as the San Joaquin kit fox possibly utilizing adjacent habitats, and the depletion of prey upon which these animals depend. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
29 BIO-3 Work and staging areas shall not occur within undeveloped surfaces on properties located immediately adjacent to the Tuolumne River.

BIO-4 The Construction Contractor shall follow all standard construction site Best Management Practices (BMPs) and prepare a Stormwater Pollution Prevention Plan (SWPPP) in compliance with all state and local agency requirements.

V. Cultural Resources
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Cause a substantial adverse change in the
significance of a historical resource pursuant to §
15064.5?
☐ ☐ ☒ ☐
(b) Cause a substantial adverse change in the
significance of an archaeological resource pursuant to
§ 15064.5?
☐ ☒ ☐ ☐
(c) Disturb any human remains, including those interred outside of dedicated cemeteries?
☐ ☐ ☒ ☐
Setting
The project area is generally developed within a single-family residential development located south of the Tuolumne River in the central San Joaquin Valley. The project footprint consists of existing developed and disturbed land. The San Joaquin Valley is bounded by the Sacramento-San Joaquin River Delta to the north, the Sierra Nevada to the east, the Tehachapi Mountains to the south, and the Pacific Coast Range to the west. The western slope of the Sierra Nevada Mountains is the source for rivers and streams that cross the San Joaquin Valley. The information in this section is based on the Cultural Resources Survey Report (CRSR) prepared for the proposed project (SWCA 2021).

Environmental Evaluation
a) Would the project cause a substantial adverse change in the significance of a historical resource pursuant to § 15064.5?
The Riverdale Park Tract neighborhood consists of residential units that are greater than 50 years of age; however, implementation of the project would not result in the modification or removal of any residential units. While the project is mostly limited to the replacement of the existing water distribution line and replacement of fittings, valves, and fire hydrants, the project proposes to demolish a small pump building and three storage tanks within the well site. The pump building and storage tanks are not designated historical resources and removal of the pump building and storage tanks would not result in adverse effects to historical resources. Based on the limited removal of non-historic structures, impacts to historical resources would be less than significant.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
30 b) Would the project cause a substantial adverse change in the significance of an archaeological resource pursuant to § 15064.5?
The background research, Native American Heritage Commission (NAHC) coordination, and field survey did not identify the presence of cultural resources within the project area. No historical resources or unique archaeological resources, as defined by CEQA, or cultural resources that may qualify as historic properties, were identified within or adjacent to the project area. The project area is adjacent to the Tuolumne River, which elevates the potential for the presence of buried archaeological resources; however, prior studies within and near the project area have not identified archaeological resources in the vicinity. Implementation of the project would require ground disturbance within existing disturbed and developed areas to replace the existing water distribution line. In the unlikely event that archaeological resources are discovered during project construction, Mitigation Measure CR-1 has been included to ensure inadvertent impacts to unknown buried resources are avoided; therefore, impacts would be less than significant with mitigation.
c) Would the project disturb any human remains, including those interred outside of dedicated cemeteries?
As described in Impact Discussion V(b), implementation of the project would require limited ground disturbance within existing disturbed and developed areas. There are no known burial sites in the project area that could be uncovered or disturbed by construction activities. In the unlikely event human remains are uncovered, compliance with California Health and Safety Code Section 7050.0 is required to avoid potential impacts; therefore, impacts would be less than significant.

Conclusion
Although residences within the Riverdale Park Tract neighborhood are greater than 50 years of age, the project would not result in any modification of existing structures or require any residential units to be removed or demolished. There are no known archaeological resources within the project site; however, there is a potential for ground-disturbing construction activities to encounter unknown buried resources.

Mitigation Measure CR-1 has been included to ensure potential impacts to unknown buried resources are avoided. Compliance with California Health and Safety Code Section 7050.0 is required in the event that human remains are discovered.

Mitigation Measures
CR-1 If cultural resources are encountered during subsurface earthwork activities, all ground disturbing activities within a 25-foot radius of the find shall cease and the City shall be notified immediately. Work shall not continue until a City-qualified archaeologist assesses the find and determines the need for further study. If the find includes Native American affiliated materials, a local Native American tribal representative will be contacted to work in conjunction with the City-approved archaeologist to determine the need for further study. A standard inadvertent discovery clause shall be included in every grading and construction contract to inform contractors of this requirement. Any previously unidentified resources found during construction shall be recorded on appropriate California Department of Parks and Recreation (DPR) forms and evaluated for significance in terms of CEQA criteria by a qualified archaeologist.

If the resource is determined significant under CEQA, the qualified archaeologist shall prepare and implement a research design and archaeological data recovery plan, in conjunction with locally affiliated Native American representative(s) as necessary, that will capture those categories of data for which the site is significant. The archaeologist #14..
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31 shall also perform appropriate technical analysis, prepare a comprehensive report, and file it with the Central California Information Center (CCIC), located at the California State University at Stanislaus, and provide for the permanent curation of the recovered materials.

VI. Energy
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Result in a potentially significant environmental
impact due to wasteful, inefficient, or unnecessary
consumption of energy resources, during project
construction or operation?
☐ ☐ ☒ ☐
(b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency?
☐ ☐ ☐ ☒
Setting
Energy, in the form of electricity and natural gas, is used in Modesto for lighting, heating, cooling, and various industrial applications. Electricity is generated through renewable sources (hydroelectricity and solar power) and also from burning natural gas (methane) and diesel fuel. Petroleum (gasoline and diesel) is utilized as a fuel for motor vehicles. Electricity is provided by the Modesto and Turlock Irrigation Districts, and natural gas is provided by Pacific Gas & Electric Company. Gasoline and diesel are provided by various private businesses.

Environmental Evaluation
a) Would the project result in a potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation?
The project proposes the installation of an upgraded water system in the Riverdale Park Tract neighborhood. Project operation would not require additional energy for residential units to receive potable water. Project construction requires the use of diesel-powered construction equipment. The City’s General Plan identifies diesel-powered construction equipment as a short-term emission that is limited in nature. According to the CalEEMod conducted for the project, construction activity would result in approximately 0.29 ton per year of DPM, which is within the SJVAPCD threshold of 30 tons per year.

Project operation would generate less than 1 ton per year of DPM, which is within the SJVAPCD threshold of 30 tons per year; therefore, project emissions would be less than significant. b) Would the project conflict with or obstruct a state or local plan for renewable energy or energy efficiency?
Project operation consists of exercising valves, conducting periodic inspection of appurtenances, flushing mains when necessary for water quality purposes, and conducting minor repair as needed. Maintenance of the water system would be conducted by existing City employees who would routinely inspect the water distribution facilities and connections for leaks, repair facilities on an as-needed basis, and conduct scheduled preventative maintenance procedures to keep the facilities in good working order. Site visits #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
32 would require use of a motorized vehicle; however, trips would be infrequent and only conducted on an as-needed basis and would not utilize substantial amounts of energy in the form of fuel. Therefore, additional trips by City workers for maintenance of the water system would be limited in nature and would not cause a substantial increase in energy use and impacts would be less than significant.

Conclusion
The project would not result in the wasteful, inefficient, or unnecessary consumption of energy resources or conflict with or obstruct a state or local plan for renewable energy or energy efficiency during construction or operation; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

VII. Geology and Soils
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Directly or indirectly cause potential substantial
adverse effects, including the risk of loss, injury, or death involving:
(i) Rupture of a known earthquake fault, as
delineated on the most recent Alquist-Priolo
Earthquake Fault Zoning Map issued by the
State Geologist for the area or based on other
substantial evidence of a known fault? Refer to
Division of Mines and Geology Special
Publication 42.
☐ ☐ ☐ ☒
(ii) Strong seismic ground shaking? ☐ ☐ ☒ ☐
(iii) Seismic-related ground failure, including
liquefaction? ☐ ☐ ☒ ☐
(iv) Landslides? ☐ ☐ ☒ ☐
(b) Result in substantial soil erosion or the loss of
topsoil? ☐ ☒ ☐ ☐
(c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the
project, and potentially result in on- or off-site
landslide, lateral spreading, subsidence, liquefaction
or collapse?
☐ ☐ ☒ ☐
(d) Be located on expansive soil, as defined in Table 18- 1-B of the Uniform Building Code (1994), creating
substantial direct or indirect risks to life or property? ☐ ☐ ☐ ☒
(e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal
systems where sewers are not available for the
disposal of waste water?
☐ ☐ ☐ ☒
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33 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? ☐ ☐ ☒ ☐
Setting
Tesla-Ortigalita Fault is the only active fault reported in Stanislaus County and is located approximately 20 miles west of Modesto. Other faults in the area include Greenville Fault, located approximately 35 miles northwest of Modesto; Calaveras and Concord Faults, located approximately 50 miles west of Modesto; Hayward Fault, located approximately 60 miles west of Modesto; and San Andreas Fault, located approximately 75 miles west of Modesto (City of Modesto 2019b).

Modesto has not been evaluated by the State of California under the Seismic Hazards Mapping Act; however, liquefaction is more likely to occur in sandy soils saturated with groundwater. The project area is underlain by the following soil types: Hanford sandy loam, 0 to 3 percent slopes; Hanford fine sandy loam, 0 to 3 percent slopes; Tujunga loamy sand, 0 to 3 percent slopes; and Tujunga sand, 0 to 3 percent slopes.

The Modesto area is primarily situated on alluvial fan deposits of Pleistocene age, but limited areas in the southeastern portion of Modesto are within the active floodplains of the Tuolumne River and Dry Creek and are underlain by younger (Holocene) alluvium. In the western portion of the city, the central portion of the Coast Ranges uplift is predominantly formed by exposed Franciscan Complex rocks of Jurassic through early Tertiary age. The range front to the west consists of a narrow belt of marine and nonmarine sedimentary rocks of post-Franciscan Tertiary age (City of Modesto 2019b).

A Geotechnical Memorandum was prepared by Crawford & Associates, Inc (CAInc) for the proposed project. The report was prepared to support the City and the Project Engineers during design and construction considerations of the proposed waterline (CAInc 2020).

Environmental Evaluation
a) Would the project directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving:
a-i) Rupture of a known earthquake fault, as delineated on the most recent AlquistPriolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42.

The state does not recognize any active faults that are designated under the Alquist-Priolo Earthquake Fault Zoning Act within the Modesto area (City of Modesto 2019b). Therefore, no impact would occur. a-ii) Strong seismic ground shaking?
There is always potential in California for seismic ground shaking; however, the project does not propose the construction of new buildings, residences, or other aboveground structures that have the potential to be inhabitable or hazardous to humans or other structures in a ground-shaking event. Therefore, project impacts would be less than significant.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
34 a-iii) Seismic-related ground failure, including liquefaction? The project area is primarily underlain by Tujunga loamy sand, 0 to 3 percent, which is characterized as somewhat excessively drained, low available water capacity, and no frequency of ponding or flooding, which means that soils at the project site are generally dry. The project does not propose the development of any buildings, residences, or other aboveground features that could expose people or structures to seismic-related ground failure, such as liquefaction. Therefore, project impacts would be less than significant.
a-iv) Landslides?
Landslides in Stanislaus County occur in the western portion of the county in the Diablo Range where geologic conditions are considered unstable. Modesto is located in the central portion of the county, east of the Diablo Range (City of Modesto 2019b). The project site is comprised of single-family residential development on relatively flat land. The project does not propose the development of any buildings, residences, or other aboveground features that could expose people or structures to landslides. Therefore, project impacts would be less than significant.
b) Would the project result in substantial soil erosion or the loss of topsoil? The overall erosion hazard in Modesto is considered low and the soil types in the project area are characterized as having a slight erosion hazard (City of Modesto 2019b). Construction of the project has the potential to increase erosion in the project area as a result of grading and excavation activities required to install the new water distribution pipelines. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize soil loss and erosion with a construction Stormwater Pollution Prevention Plan (SWPPP) in conjunction with project’s final design and grading plan. The SWPPP would be consistent with the BMPs found within the City’s Storm Water Management Plan and shall identify the selected stormwater management procedures, pollution control technologies, spill response procedures, and other means that will be used to minimize erosion and sediment production and the release of pollutants to surface water during construction. Therefore, impacts are expected to be less than significant with mitigation. c) Would the project be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse? Modesto has a low potential for geologic-related ground failure such as landslides, lateral spreading, subsidence, and collapse (Stanislaus County 2017). The project area is comprised of relatively flat developed land and the project does not propose any development that would be inhabitable or harmful to humans or other structures in the event of ground failure. Implementation of the proposed project would require excavation and trenching (not to exceed 5 feet deep) for installation of pipeline. Due to the presence of loose soils within the project site, it is anticipated that trench walls will experience significant caving during construction activities. Based on the high potential for caving, the Geotechnical Memorandum requires the implementation of Occupational Safety and Health Administration (OSHA) sloping requirements for Type C materials. The construction contractor would be responsible for the safety and stability of all temporary excavations and should provide excavation sloping and shoring in compliance with current California Division of Occupational Safety and Health (Cal/OSHA) requirements based on actual conditions encountered in the field (CAInc 2020). The project would be consistent with the design and construction guidelines and recommendations identified in the Geotechnical Memorandum prepared for the project. Based on the Geotechnical Memorandum, so long as design and construction recommendations are followed, the water line alignments are suitable for construction (CAInc 2020). Project construction would comply with the Geotechnical Memorandum and #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
35 applicable state and local and state construction standards and project impacts would be less than significant.
d) Would the project be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial direct or indirect risks to life or property?
Expansive soils typically consist of clay or contain clay components. The project site is underlain by sandy soils that do not consist of clay or clay materials; therefore, the project site is not located on expansive soils (City of Modesto 2019b). The project does not propose aboveground structures that would create substantial direct or indirect risk to life or property if placed on expansive soils. The project would not create a hazard as result of expansive soils; therefore, the project would have no impact. e) Would the project have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater?
The project does not propose the installation of septic tanks, sewers, or alternative wastewater disposal systems; therefore, the project would have no impact.
f) Would the project directly or indirectly destroy a unique paleontological resource or site or unique geologic feature?
The project site is located southwest of the city and would not be located near active floodplains in the southeast portion of the city. The project site is underlain by alluvial sediments of the Modesto formation.

This formation is quaternary in age and composed of sand, gravel, and silt of terrace and alluvial fan distribution. The Modesto formation is generally 60 to 120 feet thick (CAInc 2020). Excavation would not exceed 5 feet deep and 12 feet wide and would occur on previously disturbed and developed land.

Paleontological resources are not expected to occur in the project area or be disturbed by project construction activities; therefore, impacts would be less than significant.

Conclusion
The project is not expected to directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving strong seismic ground shaking, liquefaction, or landslides.

Proposed ground-disturbing construction activities have the potential to result in soil erosion; however, implementation of Mitigation Measure BIO-4 would minimize potential impacts. The project would not be located on an unstable geologic unit or expansive soil and the project does not include use of a septic tank or alternative wastewater disposal system. Ground-disturbing construction activities would not exceed 5 feet in depth and are not expected to result in direct or indirect impacts to paleontological resources.

Mitigation Measures
Implement Mitigation Measure BIO-4.
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36 VIII. Greenhouse Gas Emissions
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Generate greenhouse gas emissions, either directly
or indirectly, that may have a significant impact on the environment?
☐ ☐ ☒ ☐
(b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of
greenhouse gases?
☐ ☐ ☒ ☐
Setting
GHGs are any gases that absorb infrared radiation in the atmosphere and are different from the criteria pollutants discussed in Section 3, Air Quality. The primary GHGs that are emitted into the atmosphere as a result of human activities are CO2, methane (CH4), nitrous oxide (N2O), and fluorinated gases.

California Global Warming Solutions Act
Under the California Global Warming Solutions Act, also known as Assembly Bill 32 (AB 32), the California Air Resources Board (CARB) established statewide GHG emissions cap for 2020, adopted mandatory reporting cards for significant sources of GHG, and adopted a comprehensive plan, known as the Climate Change Scoping Plan, identifying how emission reductions would be achieved from significant GHG sources.

In 2016, Senate Bill 32 (SB 32) was signed into law, amending the California Global Warming Solutions Act. SB 32, and accompanying Executive Order B-30-15, require CARB to ensure that statewide GHG emissions are reduced to 40 percent below the 1990 level by 2030. CARB updated its Climate Change Scoping Plan in December of 2017 to express the 2030 statewide target in terms of million metric tons of carbon dioxide equivalent (MMTCO2e). Based on the emissions reductions directed by SB 32, the annual 2030 statewide target emissions level for California is 260 MMTOCO2e.

Sustainable Communities Strategy and Climate Protection Act Senate Bill 375 (SB 375), known as the Sustainable Communities Strategy and Climate Protection Act, was signed into law in September 2008. SB 375 builds upon AB 32 by requiring CARB to develop regional GH reduction targets for automobile and light truck sectors for 2020 and 2035, as compared to 2005 emissions levels. Regional metropolitan planning organizations (MPOs) will be responsible for preparing a Sustainable Communities Strategy (SCS) with their regional transportation plans (RTPs).

StanCOG Regional Transportation Plan/Sustainable Communities Strategy The goal of the SCS is to establish a development plan for the region, which, after considering transportation measures and policies, will achieve, if feasible, the GHG reduction targets. If an SCS is unable to achieve the GHG reduction target, an MPO must prepare an alternative planning strategy demonstrating how the GHG reduction target would be achieved through alternative development patterns, infrastructure, or additional transportation measures or policies. Stanislaus Council of Governments (StanCOG) adopted its own RTP/SCS in 2018. The SCS lays out how the region will #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
37 reduce per capita emissions from passenger vehicles 26 percent by 2020 and 22 percent by 2035 based on a 2005 baseline.

San Joaquin Valley Climate Change Action Plan
San Joaquin Valley Air Pollution Control District (SJVAPCD) released the San Joaquin Valley Climate Change Action Plan in December 2009. The Climate Change Action Plan set goals and policies to address reductions in GHGs and improvement to regional air quality. The plan also includes Best Performance Standards (BPS), which are mitigation measures intended to accomplish GHG reductions. BPS include building design elements that reduce energy consumption, project designs that promote pedestrian access, and land use planning decisions that reduce vehicle miles traveled (VMT).

Environmental Evaluation
a) Would the project generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? The proposed project would result in a temporary increase in GHG emissions associated with construction activities, including operation of construction equipment and emissions from construction workers’ personal vehicles traveling to and from the project site. Construction-related GHG emissions would vary depending on the level of activity, length of the construction period, specific construction operations, types of equipment, and number of personnel. Based on the CalEEMod modelling conducted for the proposed project (Appendix B), construction would generate 383.71 MMTCO2e per year. During operation, the project would generate GHG emissions resulting from infrequent trips to the project site by City employees for as-needed maintenance activities. For the purposes of modelling, it is conservatively assumed two trips would occur each month, resulting in 24 trips per year; however, actual trips for maintenance activities are not expected to be that frequent. Based on the CalEEMod modelling conducted for the proposed project (Appendix B), operation is conservatively estimated to generate 0.07 MMTCO2e per year.

Because construction would be temporary and would not result in a permanent increase in emissions, and operation of the project is not anticipated to generate substantial VMT or GHG emissions, the proposed project would not interfere with the implementation of AB 32, SB 32, SB 375, the RTP/SCS, or the SJVAPCD CAP and impacts would be less than significant. b) Would the project conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases? The project is within the jurisdiction of the SJVAPCD and would be subject to the 2018 CAP for the San Joaquin Valley. As described in Impact Discussion VIII(a), project construction is estimated to generate temporary GHG emissions resulting from the operation of construction equipment and employee vehicle trips. GHG emissions associated with operation would be minimal and limited to infrequent trips to the project site by City employees for as-needed maintenance activities. The purpose of the project is to upgrade and consolidate the existing water supply system. The project would not result in new development that would generate operational GHG emissions or increased VMT; therefore, the proposed project would not conflict with an appliable plan, policy, or regulation adopted for the purpose of reducing GHG emissions and impacts would be less than significant.

Conclusion
The project would generate short-term GHG emissions during construction activities and limited GHG emissions associated with infrequent trips by City employees for as-needed maintenance activities. The #14..
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38 project would not generate substantial long-term GHG emissions or substantially increase VMT and would not conflict with an appliable plan, policy, or regulation adopted for the purpose of reducing GHG emissions; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
No mitigation is necessary.

IX. Hazards and Hazardous Materials
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
☐ ☒ ☐ ☐
(b) Create a significant hazard to the public or the
environment through reasonably foreseeable upset
and accident conditions involving the release of
hazardous materials into the environment?
☐ ☒ ☐ ☐
(c) Emit hazardous emissions or handle hazardous or
acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed
school?
☐ ☐ ☐ ☒
(d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the environment?
☐ ☐ ☐ ☒
(e) For a project located within an airport land use plan or, where such a plan has not been adopted, within
two miles of a public airport or public use airport,
would the project result in a safety hazard or
excessive noise for people residing or working in the
project area?
☐ ☐ ☐ ☒
(f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency
evacuation plan?
☐ ☐ ☒ ☐
(g) Expose people or structures, either directly or
indirectly, to a significant risk of loss, injury or death involving wildland fires?
☐ ☐ ☒ ☐
Setting
The Hazardous Waste and Substances Site (Cortese) List is a planning document used by the state, local agencies, and developers to comply with CEQA requirements related to the disclosure of information about the location of hazardous materials release sites. California Government Code Section 65962.5 requires the California Environmental Protection Agency (CalEPA) to develop, at least annually, an updated Cortese List. Various state and local government agencies are required to track and document hazardous material release information for the Cortese List. The California Department of Toxic Substance Control (DTSC) EnviroStor database tracks DTSC cleanup, permitting, enforcement, and investigation efforts at hazardous waste facilities and sites with known contamination, such as federal #14..
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39 superfund sites, state response sites, voluntary cleanup sites, school cleanup sites, school investigation sites, and military evaluation sites. The State Water Resources Control Board (SWRCB) GeoTracker database contains records for sites that impact, or have the potential to impact, water in California, such as Leaking Underground Storage Tank (LUST) sites, Department of Defense sites, and Cleanup Program Sites. The remaining data regarding facilities or sites identified as meeting the “Cortese List” requirements can be located on the CalEPA website: https://calepa.ca.gov/sitecleanup/corteselist/.

Based on a review of the SWRCB GeoTracker database and the DTSC EnviroStor database, the project site is not an active hazardous waste cleanup site (DTSC 2020). There are no schools or airports located within 2 miles of the project site.

Environmental Evaluation
a) Would the project create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? The project does not propose the routine transport, use, or disposal of hazardous materials; however, construction activities require the use of hazardous materials, such as fuel for construction equipment.

Additionally, there is a possibility that ground-disturbing construction activities could expose contaminated soils containing aerially deposited lead (ADL), if present, within the project area.

Mitigation Measure HAZ-1 has been included to ensure potential impacts associated with these hazards would be reduced to a less-than-significant level by requiring proper monitoring, handling, and disposal of excavated materials and potentially hazardous materials or wastes per applicable federal, state, and local regulations. The project would need to comply with the City’s Municipal Code (Section 3-1.213) in the event of a hazardous materials spill. As described in Impact Discussion VII(b), a SWPPP outlining BMPs for pollutant runoff and response, which includes hazardous materials spill response, would be prepared for the project. Preparation of and compliance with a SWPPP and associated BMPs and Mitigation Measures BIO-4 and HAZ-1 would mitigate potential impacts during construction; therefore, project impacts would be less than significant with mitigation. b) Would the project create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment?
The project requires excavation within approximately 9,400 linear feet of public roadways throughout the Riverdale Park Tract neighborhood. There is a possibility that ground-disturbing construction activities could expose contaminated soils containing ADL, if present, within the project area. The project also proposes the demolition of a small pump building and three tanks within the well site, which would be required to comply with state and local standards for demolition and disposal activity to ensure public safety. In addition, as described in Impact Discussion IX(a), a SWPPP outlining BMPs for pollutant runoff and response, which includes hazardous materials spill response, would be prepared for the project.

Mitigation Measures BIO-4 and HAZ-1 would also mitigate potential impacts during construction. With implementation of Mitigation Measures BIO-4 and HAZ-1, impacts would be less than significant with mitigation.
c) Would the project emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school?
The project site is located southwest of the city of Modesto. The nearest school is Fairview Elementary School, located approximately 1.2 miles southwest of the project site. Therefore, there would be no impact.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
40 d) Would the project be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? According to the California Department of Toxic Substance Control (DTSC) Envirostor database, there are no hazardous materials sites located within 1,000 feet of the project site (DTSC 2020). Therefore, there would be no impact.
e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area?
The nearest airport to the project site is Modesto City-County Airport, located approximately 5 miles northwest of the project site. The project is located outside the County’s Airport Land Use Commission (ALUC) planning area (Stanislaus County 2004); therefore, no impact would occur. f) Would the project impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan?
The City of Modesto General Plan Public Safety Element (City of Modesto 2019a) and the Stanislaus County Local Hazard Mitigation Plan (LHMP) (Stanislaus County 2017) identify local hazards within the county and city and mitigation strategies and actions that can be taken to prevent or minimize damage.

The replacement of the current water system would supply potable drinking water from the city to the Riverdale Park Tract neighborhood and all project activities would be required to adhere to the General Plan. Project construction would not require any road closures that would restrict emergency access but may require traffic controls that could slow emergency access; however, roads would remain open to allow for emergency access and traffic controls would be short term and would be consistent with the City’s General Plan and other local regulations. The project does not propose any structures that would interfere with long-term emergency access or otherwise impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan; therefore, impacts would be less than significant.
g) Would the project expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? The California Department of Fire and Forestry Protection (CAL FIRE) does not characterize the project area as a high or very high fire severity zone (CAL FIRE 2020). The wildfire season in Stanislaus County occurs between May and October each year, and the highest fire hazard occurs in the undeveloped western and eastern portions of the county. The project site is located southwest of Modesto in the northcentral portion of the county. The developed city of Modesto is not located within a high or very high fire hazard area. The project does not propose the development of any structures or buildings that could increase the potential for a fire to occur in the immediate or surrounding area. Therefore, the project would not expose nearby residents to wildfire and project impacts would be less than significant.

Conclusion
The project has the potential to result in impacts related to the accidental release of hazardous materials used during construction. Preparation and implementation of a SWPPP and compliance with associated BMPs and Mitigation Measure BIO-4 would minimize potential impacts; therefore, impacts would be less than significant with mitigation. The project is not located within 0.25 mile of a school or within 2 miles #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
41 of an airport and would not impair implementation of an adopted emergency response plan or emergency evacuation plan and would not expose people or structures to a significant risk involving wildfires.

Mitigation Measures
Implement Mitigation Measure BIO-4 and the following measure.

HAZ-1 Prior to initiation of vegetation removal, demolition activities, and earthmoving activities, the project contractor shall prepare and implement a Hazardous Materials Management Plan that details procedures that will be taken to ensure proper transport, use, and storage of hazardous construction materials and the appropriate handling, stockpiling, testing, and disposal of excavated materials to prevent the inadvertent release of hazardous construction materials and/or contaminated soil and demolished materials to the environment during construction activities. Elements of the plan shall include, but would not necessarily be limited to, the following:

Worker Health and Safety

1. Accident prevention measures.

2. Measures to address hazardous materials and other site-specific worker health and safety issues during construction, including the specific level of protection required for construction workers. This shall include preparation of a site-specific health and safety plan in accordance with federal OSHA regulations (29 Code of Federal Regulations [CFR] 1910.120) and Cal/OSHA regulations (8 California Code of Regulations [CCR] 5192) to address worker health and safety issues during construction.

3. The requirement that all construction crew members be trained regarding best practices for the proper transport, use, and storage of hazardous construction materials and the appropriate handling, stockpiling, testing, and disposal of excavated materials prior to beginning work.

Soil Contamination

4. Procedures for the proper handling, stockpiling, testing, and disposal of excavated materials in accordance with CCR Title 14 and Title 22.

5. Soil contamination evaluation and management procedures, including how to properly identify potential contamination (e.g., soil staining, odors, or buried material), the requirement that construction activities within a 50-foot-radius of potentially contaminated soil be halted until the hazard has been assessed and appropriately addressed, the requirement that access to potentially contaminated areas be limited to properly trained personnel, and procedures for notification and reporting, including internal management and local agencies (e.g., fire department, Stanislaus County Environmental Management Department), as needed.

6. Monitoring of ground-disturbing activities for soil contamination may include visual and organic vapor monitoring by personnel with appropriate hazardous materials training, including 40 hours of Hazardous Waste Operations and Emergency Response (HAZWOPER) training.

7. If visual and organic vapor monitoring indicates signs of suspected contaminated soil, then soil samples shall be collected and analyzed to characterize soil quality. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
42 8. Evaluation of all potentially contaminated materials encountered during project construction activities in accordance with applicable federal, state, and local regulations and/or guidelines governing hazardous waste. All materials deemed to be hazardous shall be remediated and/or disposed of following applicable regulatory agency regulations and/or guidelines. Disposal sites for both remediated and non-remediated soils shall be identified prior to beginning construction. All evaluation, remediation, treatment, and/or disposal of hazardous waste shall be supervised and documented by qualified hazardous waste personnel.

Hazardous Construction Materials

9. Appropriate work practices necessary to effectively comply with applicable environmental laws and regulations, including hazardous materials management, handling, storage, disposal, and emergency response. These work practices include the following: an on-site hazardous material spill kit shall be provided for small spills; totally enclosed containment shall be provided for all trash; and all construction waste, including trash, litter, garbage, other solid waste, petroleum products, and other potentially hazardous materials, shall be removed to an appropriate waste facility permitted or otherwise authorized to treat, store, or dispose of such materials.

10. The requirement that hazardous construction materials must be stored at least 50 feet from storm drain inlets, creeks, and other drainage features and covered with tarps or stored inside buildings to ensure that materials are not released to the air during windy conditions or exposed to rain.

11. Procedures for proper containment of any spills or inadvertent releases of hazardous materials.

12. Notification requirements in the event of an accidental release of hazardous materials into the environment. Construction crew members shall immediately notify a construction foreperson who shall then report the release to the City of Modesto to ensure the release is remediated in accordance with City requirements.

X. Hydrology and Water Quality
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Violate any water quality standards or waste
discharge requirements or otherwise substantially
degrade surface or ground water quality?
☐ ☒ ☐ ☐
(b) Substantially decrease groundwater supplies or
interfere substantially with groundwater recharge such
that the project may impede sustainable groundwater
management of the basin?
☐ ☐ ☒ ☐
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
43 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the
course of a stream or river or through the addition of
impervious surfaces, in a manner which would:
(i) Result in substantial erosion or siltation on- or
off-site;
☐ ☒ ☐ ☐
(ii) Substantially increase the rate or amount of
surface runoff in a manner which would result in
flooding on- or off-site;
☐ ☒ ☐ ☐
(iii) Create or contribute runoff water which would
exceed the capacity of existing or planned
stormwater drainage systems or provide
substantial additional sources of polluted runoff;
or
☐ ☒ ☐ ☐
(iv) Impede or redirect flood flows? ☐ ☒ ☐ ☐
(d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation?
☐ ☒ ☐ ☐
(e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater
management plan?
☐ ☐ ☒ ☐
Setting
The project area is surrounded by the Tuolumne River to the north and is underlain by soils characterized as having a slight erosion hazard (City of Modesto 2019b). The Riverdale Park Tract is within the Turlock Groundwater Subbasin, located south of the Tuolumne River, and receives water from north and south of the river (Stanislaus County 2020). The upgraded water system would be supplied water through the City’s system rather than the RPTCSD well, which receives water from the Turlock Groundwater Subbasin. The City has a larger water system with multiple wells and would be capable of responding to any future change in water quality. The City relies on multiple wells for water supply and has redundant wells that would be able to supply the necessary amount of reliable drinking water for the project site.

Implementation of the project is intended to resolve previous water quality issues including excess amounts of uranium in the RPTCSD groundwater supply. The project site is comprised of a developed neighborhood that includes existing impervious surfaces, such as paved roadways and residential development. The northern portions of the project site are located directly south of the Tuolumne River and are located within a 100-year flood zone.

Environmental Evaluation
a) Would the project violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? Construction of the project has the potential to increase erosion in the project area during ground disturbance. Projects that disturb 1 acre of soil or more are required to obtain NPDES coverage under the NPDES General Permit for Storm Water Discharges Associated with Construction Activity (General Permit), Order No. 2009-0009-DWQ. The General Permit requires the development and implementation of a SWPPP, which includes BMPs to protect stormwater runoff and soil erosion. Because more than 1 acre of land would be disturbed during the construction phase, the project would require preparation of a #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
44 SWPPP and approval of a stormwater permit from the RWQCB. Following project construction, the project site would be developed with hardscapes, precluding the potential for substantial erosion or loss of topsoil. Mitigation Measure BIO-4 would ensure the project would not violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality; therefore, impacts would be less than significant with mitigation. b) Would the project substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin?
The Riverdale Park Tract neighborhood currently receives water from the RPTCSD, which provides potable water via a single well that draws groundwater from the Turlock Subbasin. The proposed project would upgrade and consolidate the existing water system to connect to the City’s municipal water system.

The City’s municipal water system provides water to over 75,000 water service connections via 77 water wells and 12 water tanks. The City’s water also comes from the Modesto Subbasin, which is a highpriority basin monitored by a groundwater sustainability agency called the Stanislaus & Tuolumne Rivers Groundwater Basin Association. Since the project does not include the development of new land uses or an increase in demand for groundwater compared to existing conditions, the project is not anticipated to substantially decrease groundwater supplies. The proposed removal of the existing RPTCSD well and transfer of water supply to the City’s water supply system, which relies on surface water and groundwater, may result in a reduction of groundwater being withdrawn from the Turlock Subbasin.

Additionally, stormwater flows within the project site would be contained through the existing stormwater drainage system within the site to allow for percolation back into the groundwater table. There would be no increase in impervious surface area and the project would not decrease groundwater supplies or interfere substantially with groundwater recharge in the project vicinity. Therefore, the project would not deplete groundwater resources, and impacts would be less than significant. c) Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would:
c-i) Result in substantial erosion or siltation on- or off-site? The overall erosion hazard in Modesto is considered low and the soil types in the project area are characterized as having a slight erosion hazard (City of Modesto 2019b). Construction of the project has the potential to increase erosion in the project area as a result of grading and excavation activities required to install the new water distribution pipelines. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize soil loss and erosion with a construction SWPPP in conjunction with project’s final design and grading plan. The SWPPP would be consistent with the BMPs included in the City’s Storm Water Management Plan and will identify the selected stormwater management procedures, pollution control technologies; spill response procedures, and other means that will be used to minimize erosion and sediment production and the release of pollutants to surface water during construction. Therefore, impacts would be less than significant with mitigation.
c-ii) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site?
The project site is currently developed with impervious surface areas and would remain developed following completion of construction activities. The project would not create new impervious surfaces or modify the existing stormwater drainage system in a manner that would result in on- or off-site flooding; therefore, impacts related to surface water runoff would be less than significant. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
45 Ground-disturbing activities during project construction have the potential to temporarily alter drainage patters and could increase surface runoff in the project area. Implementation of Mitigation Measure BIO4 would ensure construction BMPs would be implemented to avoid and minimize runoff with a construction SWPPP in conjunction with the project’s final design and grading plan. Therefore, impacts would be less than significant with mitigation.
c-iii) Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff?
The project site is currently developed with impervious surfaces and would remain developed following completion of construction activities. The project would not create new impervious surfaces or modify the existing stormwater drainage system in a manner that would result in runoff that would exceed the capacity of existing stormwater drainage systems. Ground-disturbing activities during project construction have the potential to temporarily increase erosive runoff in the project area. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize soil loss and erosion with a construction SWPPP in conjunction with project’s final design and grading plan. Therefore, construction impacts are expected to be less than significant with mitigation. c-iv) Impede or redirect flood flows?
The project site is currently developed with impervious surfaces and would remain developed following implementation of the project. Implementation of the project would not result in new impervious surfaces or modify existing drainage patterns or stormwater drainage systems in the project area in a manner that could redirect or impede flood flows. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize soil loss and erosion with a construction SWPPP in conjunction with project’s final design and grading plan. The project would not impede or redirect flood flows and implementation of BIO-4 would reduce the potential for runoff during construction; therefore, impacts would be less than significant with mitigation. d) In flood hazard, tsunami, or seiche zones, would the project risk release of pollutants due to project inundation?
The project site is not located within a tsunami or seiche zone; however, the northern portions of the project site are located directly south of the Tuolumne River and are located within a 100-year flood zone.

Ground-disturbing construction activities have the potential to release pollutant and erosive runoff in the 100-year flood zone. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize soil loss and erosion with a construction SWPPP in conjunction with project’s final design and grading plan. Therefore, impacts are expected to be less than significant with mitigation.
e) Would the project conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? Excavation and other construction activities have the potential to release pollutant and erosive runoff during the construction period of the project. Implementation of Mitigation Measure BIO-4 would ensure construction BMPs would be implemented to avoid and minimize erosive and polluted runoff that could result in adverse effects to waterways. As described under Impact Discussion X(b), the project would not result in an increased demand for water, nor would it substantially decrease groundwater supplies or interfere with groundwater recharge. Therefore, impacts are expected to be less than significant with mitigation.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
46 Conclusion
The project would result in more than 1 acre of ground disturbance during construction; therefore, the project would require preparation and implementation of a SWPPP. Mitigation Measure BIO-4 would require compliance with the BMPs of the SWPPP and would ensure the project would not violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality. The project would not result in increased water demand, decreased groundwater supplies, or interfere with groundwater recharge.

Mitigation Measures
Implement Mitigation Measure BIO-4.

XI. Land Use and Planning
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Physically divide an established community? ☐ ☐ ☐ ☒ (b) Cause a significant environmental impact due to a
conflict with any land use plan, policy, or regulation
adopted for the purpose of avoiding or mitigating an
environmental effect?
☐ ☒ ☐ ☐
Setting
The project area includes the RPTCSD service area, which is in unincorporated Stanislaus County in the sphere of influence of the incorporated city of Modesto (Figures 1 and 2). The project area is designated for Low Density Residential (LDR) and Urban Transition (UT) land uses within the Whitmore-Carpenter Comprehensive Planning District (Figure 3), as identified in the City of Modesto General Plan (City of Modesto 2019a). The project area is zoned Rural Residential (R-2) and General Agriculture 10 acre (A-2-10) in the Stanislaus County Zoning Ordinance (Stanislaus County 1993) (Figure 4).

Environmental Evaluation
a) Would the project physically divide an established community? The project proposes an upgraded water system that would supply the Riverdale Park Tract neighborhood with reliable drinking water from the City of Modesto. Installation of the upgraded water system would not physically divide an established community; therefore, the project would have no impact. b) Would the project cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect?
The proposed project is consistent with current zoning standards designated by the City and Stanislaus County and is consistent with current developed land uses. Implementation of the mitigation measures included throughout this Initial Study would ensure the project does not conflict with any land use plans; therefore, impacts would be less than significant with mitigation. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
47 Conclusion
The project would not divide an established community and implementation of the mitigation measures included throughout this Initial Study would ensure the project does not conflict with any land use plans.

Mitigation Measures
Implement Mitigation Measures AQ-1, BIO-1 through BIO-4, CR-1, and HAZ-1.

XII. Mineral Resources
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Result in the loss of availability of a known mineral resource that would be of value to the region and the
residents of the state?
☐ ☐ ☐ ☒
(b) Result in the loss of availability of a locally- important mineral resource recovery site delineated on a local
general plan, specific plan or other land use plan?
☐ ☐ ☐ ☒
Setting
The project site is within the City’s sphere of influence, which does not contain any designated mineral resource zones (MRZ-2a or MRZ-2b) under the Surface Mining and Reclamation Act (SMARA). The city is designated as MRZ-3a for sand and gravel (City of Modesto 2019b).

Environmental Evaluation
a) Would the project result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? The project proposes upgrades to the existing water supply system and would not result in the loss of availability of a known mineral resource; therefore, no impact would occur. b) Would the project result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan?
As discussed in Impact Discussion XII(a) above, there are no designated mineral resource zones in the project area; however, the city of Modesto is designated as MRZ-3a for sand and gravel (City of Modesto 2019b). The project proposes upgrades to the existing water supply system and would not result in the loss of availability of a locally important mineral resource recovery site; therefore, no impact would occur.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
48 Conclusion
The proposed project would not result in the loss of availability of a known mineral resource or locally important mineral resource recovery site; therefore, no impact would occur, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

XIII. Noise
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project result in:
(a) Generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable
standards of other agencies?
☐ ☐ ☒ ☐
(b) Generation of excessive groundborne vibration or
groundborne noise levels?
☐ ☐ ☒ ☐
(c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a
plan has not been adopted, within two miles of a
public airport or public use airport, would the project expose people residing or working in the project area
to excessive noise levels?
☐ ☐ ☐ ☒
Setting
The Riverdale Park Tract neighborhood is located in unincorporated Stanislaus County. The County’s Municipal Code establishes standards for construction noise in Chapter 10.46 Noise Control. As established therein, noise generated by construction activities shall not exceed 75 decibels between 7:00 p.m. and 7:00 a.m. The project area is comprised of the Riverdale Park Tract neighborhood, which includes single-family residential units. The nearest sensitive receptors to the project area are the surrounding residents within 50 to 300 feet of the proposed work areas located on Parkdale Drive and on West Hatch Road and the residents in the central portion of the neighborhood on West Hatch Road.

Environmental Evaluation
a) Would the project result in generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies?
Construction-related noise would be short term and would take place on weekdays between the hours of 7:00 a.m. and 5:00 p.m. and weekends between the hours of 8:00 a.m. and 4:00 p.m. Surrounding residents may be affected by short-term construction-related noise. Sources of project construction noise are expected to include an excavator, tractor trailer delivery trucks, a paver, a backhoe, a dump truck, a #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
49 wheel roller, service trucks, a concrete saw, a vibratory compactor, a jackhammer, a small truck-mounted drill rig, and various construction worker vehicles. Estimated noise levels associated with this equipment are identified in Table 6.

Table 6. Standard Noise Levels from Construction Equipment Equipment Description Lmax Noise Limit at 50 feet, dB, Slow Excavator 85
Tractor Trailer Delivery Trucks 84
Paver 85
Backhoe 85
Dump Truck 84
Concrete Saw 90
Jackhammer 85
Drill Rig 90
Source: Caltrans 2013
Construction activities may temporarily dominate the noise environment when construction equipment is in use; however, construction noise would be temporary and would take place on weekdays between the hours of 7:00 a.m. and 5:00 p.m. and weekends between the hours of 8:00 a.m. and 4:00 p.m., consistent with the County’s Municipal Code. Therefore, construction-related noise impacts would be less than significant.

Operation of the project would not permanently increase the ambient noise in the surrounding area. The only noise generated by the project during operation would be from maintenance activities performed by City employees on an as-needed basis. Noise levels associated with maintenance of the water system are not expected to increase current ambient noise levels; therefore, operational noise impacts would be less than significant.
b) Would the project result in generation of excessive groundborne vibration or groundborne noise levels?
Refer to Impact Discussion XIII(a), above. The proposed project has the potential to generate limited groundborne vibration during construction activities that require the use of heavy equipment and during ground-disturbing demolition and trenching activities. Excessive groundborne vibration is not expected to occur as a result of the proposed project since demolition is expected to be minor and construction activities known to generate excessive groundborne vibration (such as pile driving) are not proposed.

Construction activities would be short-term and compliance with County regulations would ensure construction-related groundborne noise and vibration impacts would be less than significant.

Operation of the project would be limited to maintenance activities conducted by City staff on an asneeded basis and would not result in groundborne noise or vibration. Therefore, operational impacts would be less than significant.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
50 c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels?
The project site is located outside the Stanislaus County ALUC’s planning area (Stanislaus County 2004).

The project does not propose any features that would place residents within the airport planning area; therefore, no impact would occur.

Conclusion
The project would generate noise and limited groundborne vibration associated with short-term construction activities; however, construction would occur during weekdays between the hours of 7:00 a.m. and 5:00 p.m. and weekends between the hours of 8:00 a.m. and 4:00 p.m., consistent with the County’s Municipal Code. Operation of the project would not generate a new long-term source of noise or vibration. Therefore, construction-related noise impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

XIV. Population and Housing
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new
homes and businesses) or indirectly (for example,
through extension of roads or other infrastructure)?
☐ ☐ ☒ ☐
(b) Displace substantial numbers of existing people or
housing, necessitating the construction of
replacement housing elsewhere?
☐ ☐ ☐ ☒
Setting
The Riverdale Park Tract neighborhood is located in the City’s sphere of influence. Modesto is the largest incorporated city in Stanislaus County and accounts for approximately 40 percent of the County’s population. The California Department of Finance estimates the City’s population was 209,186 as of January 1, 2015. The population anticipated by the City’s General Plan and its Master Environmental Impact Report is between 334,000 and 357,000 people by 2025. The estimated capacity within the City’s General Plan boundary is approximately 428,000.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
51 Environmental Evaluation
a) Would the project induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? Construction of the project is expected to use workers from the local employment force and would not require workers to relocate to the project area. Operation of the project would require maintenance activities on an as-needed basis, which would be performed by City employees and would not require workers to relocate to the project area. The project proposes the installation of an upgraded water system to serve the existing Riverdale Park Tract neighborhood and does not propose new development that would induce population growth. The Riverdale Park Tract neighborhood consists of approximately 20 undeveloped infill lots. Currently, the RPTCSD has a restriction on new development based on limited water supply. Once the water system is connected to the City’s water system, the restriction on development would no longer be applicable. The project proposes to replace existing water services at currently vacant/undeveloped parcels with new services. Generally, vacant/undeveloped parcels that do not have existing water services would likely not be provided with service lines as part of the project.

Therefore, the project has the potential to indirectly increase population growth in the area. However, new development is not currently proposed, and future development would be subject to subsequent environmental review and public fees to accommodate the marginal increase in population in the area.

Therefore, the project would not result in a direct increase in population or the use of public facilities in the area and impacts would be less than significant.
b) Would the project displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? The project would not displace existing people or housing; therefore, there would be no impact.

Conclusion
The project would not induce population growth or displace people or housing; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

XV. Public Services
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Result in substantial adverse physical impacts
associated with the provision of new or physically
altered governmental facilities, need for new or
physically altered governmental facilities, the
construction of which could cause significant
environmental impacts, in order to maintain
acceptable service ratios, response times or other
performance objectives for any of the public services:
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
52 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Fire protection? ☐ ☐ ☒ ☐
Police protection? ☐ ☐ ☒ ☐
Schools? ☐ ☐ ☒ ☐
Parks? ☐ ☐ ☒ ☐
Other public facilities? ☐ ☐ ☒ ☐
Setting
The nearest fire station to the project area is Modesto Fire Station 10, located approximately 2 miles east of the project site. The nearest police station to the project area is the Ceres Police Department, located approximately 5 miles southeast of the project site. The Riverdale Park Tract Neighborhood is within the Modesto City School District.

Environmental Evaluation
a) Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times or other performance objectives for any of the public services:

Fire protection?
The project does not propose the construction of new buildings or structures that would create an increased demand for fire protection. Aboveground structures that would be developed for the project include fire hydrants and service connection boxes, where necessary. The project would not result in the need for new or physically altered governmental facilities for fire protection; therefore, impacts related to fire protection would be less than significant.

Police protection?
The project does not propose the construction of new buildings or structures that would create an increased demand for police protection. The project would not result in the need for new or physically altered governmental facilities for police protection; therefore, impacts related to police protection for the project would be less than significant.

Schools?
As discussed in Section XIV, the project would not induce direct population growth. Future infill development may occur following implementation of the proposed project; however, no development plans have been identified and any future development would be subject to fees to accommodate public services, including schools. Implementation of the proposed project would not result in a direct increase of school-aged children in the area; therefore, the project would not create an increased demand on local schools and impacts would be less than significant.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
53 Parks?
As discussed in Section XIV, the project would not induce population growth. Future infill development may occur following implementation of the proposed project; however, no development plans have been identified and any future development would be subject to fees to accommodate public services, including parks and recreational facilities. The project would not result in a direct increase in the population or the use of public facilities in the area; therefore, impacts would be less than significant.

Other public facilities?
The project does not propose features that would significantly increase the demand on public facilities; therefore, impacts would be less than significant.

Conclusion
The project does not propose the construction of new buildings or structures that would create an increased demand for fire protection, police protection, schools, parks, or other public facilities or services; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

XVI. Recreation
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(a) Would the project increase the use of existing
neighborhood and regional parks or other recreational
facilities such that substantial physical deterioration of the facility would occur or be accelerated?
☐ ☐ ☒ ☐
(b) Does the project include recreational facilities or require the construction or expansion of recreational
facilities which might have an adverse physical effect
on the environment?
☐ ☐ ☐ ☒
Setting
The Riverdale Park Tract neighborhood provides access to Riverdale Park and access to the Tuolumne River off Parkdale Avenue in the northern portion of the neighborhood. The fishing access area for the Tuolumne River is an unpaved parking lot with scattered structures throughout and Riverdale Park is an open lot with associated play features.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
54 Environmental Evaluation
a) Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated?
As discussed in Section XIV, the project would not induce direct population growth. Future infill development may occur following implementation of the proposed project; however, no development plans have been identified and any future development would be subject to fees to accommodate public services, including public parks and recreational facilities. Project construction and operation would not result in a direct increase in population or demand on recreational facilities in the area; therefore, impacts would be less than significant.
b) Does the project include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment?
The project does not propose the development of a new recreational facility and would not result in an expansion of an existing facility; therefore, no impact would occur.

Conclusion
Implementation of the project would not result in increased use of existing recreational facilities and does not include construction of new or expanded recreational facilities; therefore, no impacts would occur, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.

XVII. Transportation
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Conflict with a program plan, ordinance or policy
addressing the circulation system, including transit,
roadway, bicycle and pedestrian facilities?
☐ ☐ ☒ ☐
(b) Would the project conflict or be inconsistent with
CEQA Guidelines section 15064.3, subdivision (b)? ☐ ☐ ☒ ☐ (c) Substantially increase hazards due to a geometric
design feature (e.g., sharp curves or dangerous
intersections) or incompatible uses (e.g., farm
equipment)?
☐ ☐ ☒ ☐
(d) Result in inadequate emergency access? ☐ ☐ ☒ ☐
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
55 Setting
The City categorizes roadways in its circulation network as freeways, expressways, arterial streets, collector streets, and local streets and are summarized as follows (City of Modesto 2019b):
• Freeways. Intended for long range interregional travel. • Expressways. High-capacity travel corridors with limited access at 0.5- to 1-mile intervals depending on the expressway classification, with traffic signals at major intersections. • Arterial Streets. Immediate capacity travel corridors primarily intended to serve major movements between different land uses or different parts of the city. • Collector Streets. Connection between local streets and arterial streets. • Residential/Local Streets. Two-lane, low-volume streets with the exclusive function of providing access to properties and connecting higher-order roadways.

Modesto has four types of improved bikeways including Class I, Class II, Class III, and Class IV, summarized as follows (City of Modesto 2019b):
• Class I. Paved bike paths that are separated from city streets. • Class II. Striped lanes on major city streets.
• Class III. On-street routes identified by “bicycle route” signs. • Class IV. Facilities are one- or two-way dedicated bicycle facilities physically separated from vehicle traffic lanes.

Bus service within the city includes the Modesto Area Express (MAX), Modesto Dial-A-Ride, Stanislaus Regional Transit (StaRT), and Greyhound. Train service includes Amtrak, Altamont Commuter Express (ACE), and Bay Area Rapid Transit (BART) connections (City of Modesto 2019b).

The project site is accessed via West Hatch Road from South Carpenter Road from the east. Within the project area, South Carpenter Road is designated as a collector street and West Hatch Road is designated as a local street (City of Modesto 2019b). The segment of South Carpenter Road between Paradise and Hatch Roads, which would be used to access the project site, is classified as a daily level of service (LOS) E, meaning it is approaching capacity (City of Modesto 2019b).

Environmental Evaluation
a) Would the project conflict with a program plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? According to the Technical Advisory on Evaluating Transportation Impacts in CEQA (OPR 2018), projects that do not indicate substantial evidence that a project would generate a potentially significant level of VMT, that are consistent with a Sustainable Communities Strategy (SCS) or general plan, or that would generate or attract fewer than 110 trips per day generally may be assumed to cause a less-thansignificant transportation impact. Implementation of the project would require maintenance trips to and from the project site on an as-needed basis but would not create more than 110 trips per day. Project construction would require vehicle trips to and from the site but would not exceed more than 110 trips per day. Construction activity may require temporary traffic controls along West Hatch Road and Parkdale Drive but would be limited in nature and would not increase long-term traffic to the area. The project would not conflict with the City of Modesto General Plan Transportation Element (Chapter V), and impacts would be less than significant.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
56 b) Would the project conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b)?
According to the Technical Advisory on Evaluating Transportation Impacts in CEQA (OPR 2018), projects that do not indicate substantial evidence that a project would generate a potentially significant level of VMT, that are consistent with an SCS or general plan, or that would generate or attract fewer than 110 trips per day generally may be assumed to cause a less-than-significant transportation impact. The project does not propose features that would increase circulation to or from the project site. During operation, occasional trips may be required by City employees for maintenance activities on an as-needed basis; however, they would not exceed 110 trips per day and would not generate a significant increase in VMT. Therefore, project impacts would be less than significant. c) Would the project substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)?
The project does not propose the design of new roadways or structures that could be considered hazardous. The project proposes aboveground features, including fire hydrants and service boxes that would not impede roadways or access to roadways.; therefore, project impacts would be less than significant.
d) Would the project result in inadequate emergency access? Project operation would not include any features that would block emergency access. Existing paved roads that are disturbed during construction would be repaved following installation of the pipelines in order to allow emergency and other access. Temporary fill material would be placed over excavated roads during construction activity to ensure access to the area. Project construction does not propose the closure of roads but may require traffic controls that could slow the flow of traffic. However, roads would remain open to allow for emergency access to the site and to the Riverdale Park Tract Neighborhood; therefore, impacts would be less than significant.

Conclusion
The project would not conflict with a program plan, ordinance or policy addressing the circulation system, conflict or be inconsistent with CEQA Guidelines section 15064.3, subdivision (b), substantially increase hazards, or result in inadequate emergency access; therefore, impacts would be less than significant, and mitigation is not necessary.

Mitigation Measures
Mitigation is not necessary.
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
57 XVIII. Tribal Cultural Resources
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(a) Would the project cause a substantial adverse
change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as
either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope
of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that
is:
(i) Listed or eligible for listing in the California
Register of Historical Resources, or in a local
register of historical resources as defined in
Public Resources Code section 5020.1(k), or
☐ ☒ ☐ ☐
(ii) A resource determined by the lead agency, in its
discretion and supported by substantial
evidence, to be significant pursuant to criteria set
forth in subdivision (c) of Public Resources Code
Section 5024.1. In applying the criteria set forth
in subdivision (c) of Public Resource Code
Section 5024.1, the lead agency shall consider
the significance of the resource to a California
Native American tribe.
☐ ☒ ☐ ☐
Setting
Approved in 2014, AB 52 added tribal cultural resources to the categories of resources that must be evaluated under CEQA. Tribal cultural resources are defined as either of the following:
1) Sites, features, cultural landscapes, sacred places, and objects with cultural value to a California Native American tribe that are either of the following:
a. Included or determined to be eligible for inclusion in the California Register of Historical Resources; or
b. Included in a local register of historical resources as defined in subdivision (k) of California Public Resources Code Section 5020.1.
2) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of California Public Resources Code Section 5024.1. In applying these criteria for the purposes of this paragraph, the lead agency shall consider the significance of the resource to a California Native American Tribe.

Recognizing that tribes have expertise with regard to their tribal history and practices, AB 52 requires lead agencies to provide notice to tribes that are traditionally and culturally affiliated with the geographic area of a proposed project if they have requested notice of projects proposed within that area. If the tribe requests consultation within 30 days upon receipt of the notice, the lead agency must consult with the tribe regarding the potential for adverse impacts on tribal cultural resources as a result of a project.

Consultation may include discussing the type of environmental review necessary, the presence and/or significance of tribal cultural resources, the level of significance of a project’s impacts on the tribal cultural resources, and available project alternatives and mitigation measures recommended by the tribe to avoid or lessen potential impacts on tribal cultural resources. #14..
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58 Native American Tribes were notified on March 18, 2021, about the project consistent with state and City regulations under AB 52. As of May 5, 2021, the City has not received any responses.

Environmental Evaluation
a) Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is:
a-i) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section 5020.1(k)?
The City has provided notice of the opportunity to consult to appropriate tribes per the requirements of AB 52 and has not received any responses as of May 5, 2021. The project site does not contain any known tribal cultural resources that have been listed or been found eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in PRC Section 5020.1. Mitigation Measure CR-1 has been included to require cessation of work if a discovery is made until a qualified archaeologist can assess the significance of the find. Therefore, impacts related to a substantial adverse change in the significance of tribal cultural resource would be less than significant with mitigation.
a-ii) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1. In applying the criteria set forth in subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe.

Refer to Impact Discussion XVIII(a-i). Mitigation Measure CR-1 has been included to require cessation of work if a discovery is made until a qualified archaeologist can assess the significance of the find.

Therefore, impacts related to a substantial adverse change in the significance of tribal cultural resource would be less than significant with mitigation.

Conclusion
The project site does not contain any known tribal cultural resources that have been listed or been found eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in PRC Section 5020.1. Mitigation Measure CR-1 has been included to require cessation of work if a discovery is made until a qualified archaeologist can assess the significance of the find. Therefore, impacts related to a substantial adverse change in the significance of tribal cultural resource would be less than significant with mitigation.

Mitigation Measures
Implement Mitigation Measure CR-1.
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59 XIX. Utilities and Service Systems
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
Would the project:
(a) Require or result in the relocation or construction of new or expanded water, wastewater treatment or
storm water drainage, electric power, natural gas, or
telecommunications facilities, the construction or
relocation of which could cause significant
environmental effects?
☐ ☒ ☐ ☐
(b) Have sufficient water supplies available to serve the project and reasonably foreseeable future
development during normal, dry and multiple dry
years?
☐ ☐ ☒ ☐
(c) Result in a determination by the wastewater treatment provider which serves or may serve the project that it
has adequate capacity to serve the project’s projected
demand in addition to the provider’s existing
commitments?
☐ ☐ ☒ ☐
(d) Generate solid waste in excess of State or local
standards, or in excess of the capacity of local
infrastructure, or otherwise impair the attainment of
solid waste reduction goals?
☐ ☐ ☒ ☐
(e) Comply with federal, state, and local management
and reduction statutes and regulations related to solid waste?
☐ ☐ ☒ ☐
Setting
The City’s water system currently serves a population of approximately 260,000 people in California’s Central Valley. The City is currently the largest retail water supplier in Stanislaus County and has been providing potable water service to its urban area since 1895. The City’s existing water service area consists of one large contiguous service area (defined by the City’s current Sphere of Influence and also includes Salida, portions of North Ceres, and several unincorporated Stanislaus County “islands” located within the City’s Sphere of Influence), and several smaller outlying service areas (including Grayson, Del Rio, Ceres [Walnut Manor], and portions of Turlock).

The City’s water system consists of a little over 900 miles of transmission and distribution pipelines. A portion of the transmission mains traversing the City is owned and operated by the Modesto Irrigation District (MID), and these transmission mains deliver treated surface water from the Modesto Regional Water Treatment Plant (MRWTP) through a series of turnouts that have the ability to control water supply into the City’s water distribution system. Within the contiguous service area, the City also has a total of 101 groundwater wells (77 of which are active), 11 at-grade storage tanks, and 10 active booster pump stations. In the outlying service areas, the City has 20 groundwater wells (17 of which are active), two at-grade storage tanks (in Grayson and Del Rio), and two booster pump stations (also in Grayson and Del Rio).

All municipal and most industrial water service in the Modesto planning area is provided by the City’s water supply system. In addition to the City’s system, the City owns and operates a number of smaller water systems outside the study area; these serve Salida, Ceres (Walnut Manor), Grayson, Del Rio (Hillcrest), and North, South, and Central Turlock. The City derives drinking water from a combination of #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
60 groundwater and surface water sources. In 2015, there were more than 74,500 water service connections with demand for more than 47,000 acre-feet (AF) of water, approximately 900 miles of water transmission and distribution pipelines, 86 operational groundwater wells serving both the contiguous and outlying service areas (77 within the contiguous system), and eight operational water tanks within the study area with a combined storage capacity of 12.1 million gallons (City of Modesto 2019b).

The project site is comprised of the Riverdale Park Tract neighborhood, which is currently served by the RPTCSD. The RPTCSD owns and operates a domestic water supply system that supplies potable water to approximately 498 residents through 178 residential connections under the authority of Domestic Water Supply Permit No. 2018‐03‐014, issued on March 16, 2015, by the Stanislaus County Department of Environmental Resources (DER). The water system is also regulated by the State Water Resources Control Board Division of Drinking Water (SWRCB‐DDW). The water system is classified as a Small Community Water System (SCWS) and has one active groundwater well referred to as Well 03 (Primary Station [PS] Code #5000019‐003), constructed in 1981. The RPTCSD water supply system also includes a second well that is inactive and inoperable.

On February 2, 2016, the Stanislaus County DER issued Compliance Order No. DER‐16CO‐002 (CO#1) to the RPTCSD, which requires the RPTCSD to submit a final plan to correct the uranium exceedance problem, which is based on a running annual average, by April 18, 2016, and have all of the improvements constructed by July 1, 2018. Quarterly monitoring results and progress reports have been submitted to the Stanislaus County DER since CO#1 was issued. Between August 2016 and 2020, uranium concentrations in the groundwater remained below the Maximum Contaminant Level (MCL); however, recent sampling efforts conducted in 2020 and 2021 indicate uranium levels are at or exceeding the MCL and the Stanislaus County DER and the SWRCB-DDW are still requiring the RPTCSD to address the uranium violations in the long term.

Environmental Evaluation
a) Would the project require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects?
In order to comply with public health requirements, the City proposes to replace and upgrade the RPTCSD water system in the Riverdale Park Tract neighborhood, and tie into the City’s water system near the Hatch and Carpenter Roads intersection. This project includes the replacement of water mains, valves, fittings, and fire hydrants, where required. The project would replace an existing 8-inch water main with approximately 1,500 linear feet of 12-inch water main along Hatch Road to provide additional supply to the community and replace approximately 8,000 linear feet of existing 8-inch, 6-inch, and smaller pipes along Avondale, Greenlawn, and Riverdale Avenues with 8-inch mains. Pipeline replacement would occur within approximately 9,400 linear feet of public roads and would extend throughout most of the roadways within the community. The RPTCSD well and City wells are within the Modesto and Turlock Groundwater Subbasins, which are not considered critically over-drafted basins.

The upgraded water system would be supplied water through the City rather than the RPTCSD well for reliable drinking water. The environmental effects of the upgraded, consolidated water system are evaluated throughout this Initial Study. With implementation of mitigation measures outlined in this document and compliance with applicable standards and regulations, project impacts would be less than significant.

The City owns and operates two wastewater treatment facilities, located at Sutter Avenue and Jennings Road. The Sutter Avenue wastewater treatment facility treats approximately 20 million gallons of #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
61 wastewater per day before traveling 6 miles of pipelines to the facility at Jennings Road that treats approximately 15 million of those gallons further to tertiary (recycled water) levels (City of Modesto 2020). The project would not generate wastewater during construction or operation of the project or require relocation or construction of a new or expanded wastewater system. Therefore, no impact would occur.

The project may modify the existing drainage system temporarily during ground-disturbing construction activities; however, all disturbed streets and gutters would be returned to pre-construction conditions following construction of the upgraded water system infrastructure. The project would not require the relocation or construction of new or expanded stormwater drainage infrastructure. Therefore, no impact would occur.

The project would not require or result in the relocation or construction of new or expanded electric power, natural gas, or telecommunications facilities. Therefore, no impact would occur. b) Would the project have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years?
The City’s existing water supply portfolio includes surface water and groundwater sources. The City has purchased wholesale treated surface water from MID since the Modesto Regional Water Treatment Plant (MRWTP) was constructed in 1995. The MRWTP is owned and operated by MID, and it delivers an annual average supply of 30 million gallons per day (mgd) (33,601 AF per year [AFY]) to the City with a functional hydraulic peaking capacity up to 42.5 mgd. This treated surface water supply from MID, coupled with the available groundwater supply (together termed a “conjunctive supply”) is used to meet the City’s water supply needs for municipal customers in the contiguous service area. The MRWTP Phase Two Expansion was completed in early 2016 and provides the City with up to an additional 30 mgd of treated surface water capacity for a total annual average capacity of up to 60 mgd (67,202 AFY). The Phase Two Expansion project provides a near-term supply of 10 mgd by 2020 (not accounting for supply reductions due to drought). The supply available from the MRWTP Phase Two Expansion project to meet City demands is projected to increase as additional development occurs within the City’s contiguous service area and within MID’s treated water “place of use.” It should be noted that the total 60 mgd capacity is a normal and wet year annual average, and the MRWTP facility has the ability to provide a peaking capacity greater than the annual average.

The City’s groundwater supply wells are located throughout the City’s existing water service areas, and these wells are located within the San Joaquin Valley Groundwater Basin (Modesto, Turlock and DeltaMendota subbasins). The residents within the contiguous service area north of the Tuolumne River (North Modesto, Salida, and Empire) generally rely on treated surface water supply from MID year-round and supplemented with groundwater to meet increased water demands primarily in the summer months. Water demands from the contiguous service area located south of the Tuolumne River (South Modesto) and the outlying service areas are met with groundwater supply year-round (West Yost Associates 2017).

Since the Riverdale Park Tract neighborhood already relies on well water from the Turlock Subbasin via the RPTCSD’s well, the project would not result in an increased demand for water, it would just be provided via the City through an upgraded and consolidated water supply system. The project would have sufficient water supplies available to serve the project and reasonably foreseeable development through the City’s surface water and groundwater resources; therefore, impacts would be less than significant. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
62 c) Would the project result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? The Riverdale Park Tract neighborhood would continue to be served by the same wastewater treatment provider and infrastructure. The project would not generate new or increased wastewater and would not require new or modified wastewater infrastructure; therefore, impacts would be less than significant. d) Would the project generate solid waste in excess of State or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals?
Excavation, trenching, and grading activities would be necessary for construction of the proposed project; however, excavated materials resulting from site preparation would either be balanced on-site during construction or disposed of at an approved receiving facility. The project is not anticipated to generate solid waste during construction or operation; therefore, project impacts related to the generation of solid waste would be less than significant.
e) Would the project comply with federal, state, and local management and reduction statutes and regulations related to solid waste?
See discussion for Section XIX(d) above; impacts would be less than significant.

Conclusion
The environmental effects of the upgraded, consolidated water system are evaluated throughout this Initial Study. With implementation of mitigation measures outlined in this document and compliance with applicable standards and regulations, project impacts would be less than significant. The project would have sufficient water supplies to serve the project and future development. The project would not generate wastewater or solid waste.

Mitigation Measures
Implement Mitigation Measures AQ-1, BIO-1 through BIO-4, CR-1, and HAZ-1.

XX. Wildfire
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project:
(a) Substantially impair an adopted emergency response
plan or emergency evacuation plan? ☐ ☐ ☒ ☐
(b) Due to slope, prevailing winds, and other factors,
exacerbate wildfire risks, and thereby expose project
occupants to, pollutant concentrations from a wildfire
or the uncontrolled spread of a wildfire?
☐ ☐ ☒ ☐
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
63 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency
water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
☐ ☐ ☒ ☐
(d) Expose people or structures to significant risks,
including downslope or downstream flooding or
landslides, as a result of runoff, post-fire slope
instability, or drainage changes?
☐ ☐ ☒ ☐
Setting
The project site is comprised of the Riverdale Park Tract neighborhood located in the City’s sphere of influence in Stanislaus County. CAL FIRE does not identify Modesto or surrounding areas as being within a high or very high fire hazard severity zone (CAL FIRE 2020). Modesto and surrounding areas are within a Local Responsibility Area (LRA), and the project site and surrounding areas are primarily designated as unzoned and LRA moderate. The wildfire season in Stanislaus County occurs between May and October each year and the highest fire hazard area is in the undeveloped western and eastern portions of the county. The project area is located southwest of the city in the north-central portion of the county.

Environmental Evaluation
a) If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project substantially impair an adopted emergency response plan or emergency evacuation plan?
All construction activities would be located within existing public rights-of-way, City property, or City easements. Project construction does not propose the closure of roads but may require traffic controls that could slow the flow of traffic. However, all roads would remain open throughout the duration of construction activities to allow for emergency access to the site and to the Riverdale Park Tract neighborhood. Open trenches used for installation of the pipelines would be repaved after installation of the pipelines, and long-term emergency access to the Riverdale Park Tract neighborhood would be in compliance with applicable emergency plans. Therefore, the project would not impair implementation of an adopted emergency response plan or emergency evacuation plan and impacts would be less than significant.
b) Due to slope, prevailing winds, and other factors, if located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project exacerbate wildfire risks, and thereby expose project occupants to, pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire?
The developed city is not located within a high or very high fire hazard category. The project does not propose the development of any structures or buildings that could increase the potential for a wildfire to occur in the immediate or surrounding area. Therefore, the project would not expose nearby residents to wildfire and project impacts would be less than significant. #14..
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
64 c) If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment?
The project proposes upgrades to the existing water supply system that would deliver reliable drinking water to residents within the RPTCSD. Project construction would require demolition of existing pavement and excavation to install replacement pipelines. After installation, all disturbed road surfaces would be repaved consistent with existing infrastructure in the neighborhood. The project would not require the installation or maintenance of associated infrastructure that could exacerbate fire risk or result in temporary or ongoing impacts to the environment; therefore, project impacts would be less than significant.
d) If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? The project area is developed with existing single-family residential development on a relatively flat site.

The project area is not designated as a high or very high fire hazard area; therefore, hazards associated with wildfire including post-fire instability or drainage changes have a low potential to occur. The project does not propose the development of structures that could be damaged or create a hazard for nearby residents; therefore, project impacts are less than significant.

Conclusion
The project would not expose people or structures to new or exacerbated wildfire risks and would not require the development of new or expanded infrastructure or maintenance to reduce wildfire risks.

Therefore, potential impacts associated with wildfire would be less than significant and mitigation measures are not required.

Mitigation Measures
Mitigation is not necessary.

XXI. Mandatory Findings of Significance
Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(a) Does the project have the potential to substantially degrade the quality of the environment, substantially
reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal
community, substantially reduce the number or
restrict the range of a rare or endangered plant or
animal or eliminate important examples of the major
periods of California history or prehistory?
☐ ☒ ☐ ☐
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Riverdale Park Tract Community Services District Water System Consolidation Project Initial Study/Mitigated Negative Declaration
65 Environmental Issues
Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact No Impact
(b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively
considerable” means that the incremental effects of a
project are considerable when viewed in connection
with the effects of past projects, the effects of other current projects, and the effects of probable future
projects)?
☐ ☒ ☐ ☐
(c) Does the project have environmental effects which
will cause substantial adverse effects on human
beings, either directly or indirectly?
☐ ☒ ☐ ☐
Environmental Evaluation
a) Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? As discussed in the preceding sections, the project has the potential to significantly degrade the quality of the environment, including effects on biological resources. During construction, ground disturbance and construction of the project may affect biological resources, including sensitive and special-status species.

Mitigation measures are identified to reduce potential impacts a less-than-significant level, including, but not limited to, measures intended to prevent the entrapment of animals in excavated trenches, a measure that would prohibit the use of rodenticides, and avoidance of natural habitats where feasible. b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects)?
When project impacts are considered along or in combination with other impacts, the project-related impacts may be significant. Construction and operation of the project would contribute to cumulative levels of air pollutant emissions, erosion and down-gradient sedimentation, and pollutant concentrations in stormwater runoff. Mitigation measures have been incorporated into the project to reduce projectrelated impacts to a less-than-significant level. Based on implementation of identified project-specific mitigation measures, the cumulative effects of the proposed project would be less than significant. c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? Implementation of the project would result in the generation of pollutants, which may affect air and water quality, and would result in a short-term increase in the ambient noise level during construction.

Mitigation measures have been developed that would reduce these project-specific impacts to a less-thansignificant level; therefore, the project would not result in substantial, adverse environmental effects to human beings, either directly or indirectly.
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Based on implementation of mitigation measures identified in each of the sections above, all potential impacts associated with the construction and operation of the proposed project would be mitigated to less-than-significant levels.
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67 3 REFERENCES
am Consulting Engineers. 2018. Riverdale Park Tract Community Services District Water Supply Feasibility Study. January (Revised November).

California Department of Conservation (DOC). 2020. California Important Farmland Finder. Available at:
https://maps.conservation.ca.gov/DLRP/CIFF/. Accessed December 7, 2020.

California Department of Forestry and Fire Protection (CAL FIRE). 2020. California Fire Hazard Severity Zones (FHSZ). Available at: https://egis.fire.ca.gov/FHSZ/. Accessed December 4, 2020.

California Department of Toxic Substance Control (DTSC). 2020. EnviroStor. Available at:
https://www.envirostor.dtsc.ca.gov/public/. Accessed December 4, 2020.

California Department of Transportation (Caltrans). 2013. Technical Noise Supplement to the Traffic Noise Analysis Protocol. September. Available at:
https://www.sandiegocounty.gov/content/dam/sdc/pds/ceqa/Soitec-Documents/Final-EIRFiles/references/rtcref/ch2.6/2014-12-19_Caltrans_TrafficNoiseAnalysisProtocol_Part1.pdf.

Accessed December 2020.
———. 2020. Scenic Highways ArcGIS Mapping Tool. Available at:
https://caltrans.maps.arcgis.com/apps/webappviewer/index.html?id=026e830c914c495797c969a 3e5668538. Accessed December 21, 2020.

California Emissions Estimator Model (CalEEMod). 2021. Riverdale Park Tract Water System Consolidation Project CalEEMod Output.

California Governor’s Office of Planning and Research (OPR). 2018. Technical Advisory on Evaluation Transportation Impacts in CEQA. December. Available at:
https://www.opr.ca.gov/docs/20190122-743_Technical_Advisory.pdf. Accessed December 2020.

City of Modesto. 2019a. City of Modesto General Plan. Adopted March 5. Available at:
https://www.modestogov.com/2069/General-Plan. Accessed December 2020. ———. 2019b. City of Modesto General Plan Master Environmental Impact Report. SCH# 2014042081.

March. Available at: https://www.modestogov.com/2070/Master-Environmental-Impact-ReportEIR. Accessed December 2020. ———. 2020. Wastewater Services. Available at: https://modestogov.com/522/Wastewater-Services.

Accessed December 21, 2020.

Conservation Biology Institute. 2015. Data Basin Stanislaus County Williamson Act Parcels and NonRenewables. Available at:
https://databasin.org/maps/new#datasets=30858ef6142d4cb38c2a3e4b228a7bdb. Accessed December 21, 2020.

Crawford & Associates, Inc (CAInc). 2020. Draft Geotechnical Memorandum for the Riverdale Park Tract Waterline Project in Stanislaus County, California. July. #14..
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68 Modesto City Schools. 2020. Locate My School. Available at:
https://www.locatemyschool.com/map/modesto. Accessed December 21, 2020.

Municode Library. 2020. Modesto, California Municipal Code. Available at:
https://library.municode.com/ca/modesto/codes/code_of_ordinances. Accessed December 4, 2020.

San Joaquin Valley Air Pollution Control District (SJVAPCD). 2015. Air Quality Thresholds of Significance – Criteria Pollutants. Available at http://www.valleyair.org/transportation/0714- GAMAQI-Criteria-Pollutant-Thresholds-of-Significance.pdf. Accessed December 26, 2020. ———. 2018. 2018 Plan for the 1997, 2006, and 2012 PM2.5 Standards. November 15. Available at:
https://www.valleyair.org/pmplans/documents/2018/pm-plan-adopted/2018-Plan-for-the-1997- 2006-and-2012-PM2.5-Standards.pdf. Accessed December 26, 2020.

Stanislaus County. 1993. Stanislaus County Zoning Ordinance. Available at:
https://www.stancounty.com/planning/forms/zoning-ordinance.pdf. Accessed December 2020. ———. 2014. Stanislaus County Airport Land Use Compatibility Plan. May 2014 Draft. Available at:
http://www.stancounty.com/planning/agenda-aluc/2016/10-06-16/EX_B.pdf. Accessed January 2021.
———. 2017. Stanislaus County, California Local Hazard Mitigation Plan. Updated 2017. Available at:
http://www.stanoes.com/pdf/lhmp/2017-lhmp.pdf. Accessed December 2020. ———. 2018. Stanislaus County Airport Land Use Compatibility Plan. Prepared by Stanislaus County Planning and Community Development Department for the Stanislaus County Airport Land Use Commission. Adopted October 6. Available at: http://www.stancounty.com/planning/agendaaluc/ALUCP.pdf. Accessed December 2020. ———. 2019. Stanislaus County Emergency Operations Plan, Basic Plan. Stanislaus County Office of Emergency Services. Available at http://www.stanoes.com/pdf/sc-eop.pdf. Accessed December 2020.
———. 2020. Groundwater Resources. Available at:
http://www.stancounty.com/er/groundwater/subbasin.shtm. Accessed December 2020.

U.S. Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS). 2020. Web Soil Survey. Available at: https://websoilsurvey.nrcs.usda.gov/app/WebSoilSurvey.aspx.

Accessed December 4, 2020.

U.S. Environmental Protection Agency (USEPA). 2020. Current Nonattainment Counties for All Criteria Pollutants. Available at: https://www3.epa.gov/airquality/greenbook/ancl.html. Accessed December 26, 2020.

West Yost Associates. 2017. City of Modesto Water Master Plan. September. Available at:
https://www.modestogov.com/847/Water-Plans-Reports. Accessed January 2021. #14..
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APPENDIX A
Project Design Plans
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APPENDIX B
Air Quality Modeling
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Note: The Section 508 amendment of the Rehabilitation Act of 1973 requires that the information in federal documents be accessible to individuals with disabilities. The City of Modesto has made every effort to ensure that the information in the Initial Study/Mitigated Negative Declaration for the Riverdale Park Tract Community Services District Water System Consolidation Project, Modesto, Stanislaus County, California is accessible. However, this appendix is not fully compliant with Section 508, and readers with disabilities are encouraged to contact Jim Alves as the City of Modesto at [email protected] or (209) 571-5557 if they would like access to the information. #14..
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1.0 Project Characteristics

1.1 Land Usage
Land Uses Size Metric Lot Acreage Floor Surface Area Population General Light Industry 2,672.84 1000sqft 61.36 2,672,840.00 0

1.2 Other Project Characteristics
Urbanization Urban Wind Speed (m/s) 2.7 Precipitation Freq (Days) 45 Climate Zone 4 Operational Year 2022
Utility Company Pacific Gas & Electric Company
CO2 Intensity 641.35 CH4 Intensity 0.029 N2O Intensity 0.006 (lb/MWhr) (lb/MWhr) (lb/MWhr)

1.3 User Entered Comments & Non-Default Data
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Table Name Column Name Default Value New Value
tblGrading AcresOfGrading 0.00 1.62
tblRoadDust MaterialSiltContent 4.3 0
tblRoadDust RoadPercentPave 0 100
CalEEMod Version: CalEEMod.2016.3.2 Page 2 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual Project Characteristics - Estimated start date
Land Use - Total Project area = 61.36 acres (2,672,840 sf) Construction Phase - Estimates from City of Modesto
Off-road Equipment - Estimates from the City of Modesto Off-road Equipment - Estimates from City of Modesto
Off-road Equipment - Estimates from City of Modesto
Off-road Equipment - Estimates from City of Modesto
Grading - Estimates from the City of Modesto - 1.62 acres of grading Demolition - Estimates from the City of Modesto (2.03 tons/cubic yard x 440 cubic yards) Trips and VMT - Estimates from City of Modesto
On-road Fugitive Dust - Defaults used
Vehicle Trips - Conservatively assumes 2 trips/month, 24/year, 5 miles traveled. (0.0000246/size/day) Road Dust - All paved roads
Woodstoves - N/A
Consumer Products - N/A
Area Coating - No operational architectural coatings
Landscape Equipment -
Energy Use - Operation would not result in new energy use Water And Wastewater - Operation would not result in new water/wastewater Solid Waste - Operation would not result in solid waste Stationary Sources - Emergency Generators and Fire Pumps - Operation would not require use of stationary sources Construction Off-road Equipment Mitigation - No MM
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
2021 0.2779 2.8914 1.9343 3.7600e0030.0253 0.1327 0.1580 5.4800e0030.1226 0.1280 0.0000 330.7943 330.7943 0.0982 0.0000 333.2492 2022 6.3600e0030.0588 0.0803 1.3000e0041.2600e0032.9900e0034.2500e0033.3000e0042.7500e0033.0900e0030.0000 11.5669 11.5669 3.4300e0030.0000 11.6526 Maximum 0.2779 2.8914 1.9343 3.7600e0030.0253 0.1327 0.1580 5.4800e0030.1226 0.1280 0.0000 330.7943 330.7943 0.0982 0.0000 333.2492 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Year tons/yr MT/yr
2021 0.2779 2.8913 1.9343 3.7600e0030.0253 0.1327 0.1580 5.4800e0030.1226 0.1280 0.0000 330.7939 330.7939 0.0982 0.0000 333.2488 2022 6.3600e0030.0588 0.0803 1.3000e0041.2600e0032.9900e0034.2500e0033.3000e0042.7500e0033.0900e0030.0000 11.5669 11.5669 3.4300e0030.0000 11.6525 Maximum 0.2779 2.8913 1.9343 3.7600e0030.0253 0.1327 0.1580 5.4800e0030.1226 0.1280 0.0000 330.7939 330.7939 0.0982 0.0000 333.2488 Mitigated Construction
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2.0 Emissions Summary

2.1 Overall Construction
Unmitigated Construction
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2.2 Overall Operational
Unmitigated Operational
ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e PM10 PM10 Total PM2.5 PM2.5 Total
Category tons/yr MT/yr
Area 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Energy 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

0.0000

0.0000 0.0000

0.0000

0.0000
Mobile 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Waste 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Water 0.0000
Total 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000

0.0000

0.0000 0.0000

0.0000

0.0000 0.0000

0.0000

0.0000
ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total
Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Reduction
Quarter Start Date End Date Maximum Unmitigated ROG + NOX (tons/quarter) Maximum Mitigated ROG + NOX (tons/quarter) 1 6-1-2021 8-31-2021 1.7139 1.7139
2 9-1-2021 11-30-2021 1.3465 1.3465
3 12-1-2021 2-28-2022 0.1484 0.1484
Highest 1.7139 1.7139
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Area 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Energy 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Mobile 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Waste 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Water 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

3.0 Construction Detail
Construction Phase
ROG NOx CO SO2 Fugitive Exhaust PM10 Fugitive Exhaust PM2.5 Bio- CO2 NBio-CO2 Total CO2 CH4 N20 CO2e PM10 PM10 Total PM2.5 PM2.5 Total
Percent 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Reduction
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2.2 Overall Operational
Mitigated Operational
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Phase Phase Name Phase Type Start Date End Date Num Days Num Days Phase Description Number Week
1 Demolition Demolition 6/1/2021 9/6/2021 5 70
2 Site Preparation Site Preparation 6/1/2021 7/26/2021 5 40 3 Grading Grading 6/28/2021 11/26/2021 5 110
4 Pipeline Construction Building Construction 8/1/2021 7/30/2021 5 1110 5 Paving Paving 8/16/2021 1/31/2022 5 121
Acres of Grading (Site Preparation Phase): 0
Acres of Grading (Grading Phase): 1.62
Acres of Paving: 0
Residential Indoor: 0; Residential Outdoor: 0; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parking Area: 0 (Architectural Coating - sqft)
OffRoad Equipment
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Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor Demolition Concrete/Industrial Saws 1 8.00 81 0.73
Demolition Excavators 1 8.00 158 0.38
Demolition Rubber Tired Dozers 1 8.00 247 0.40
Site Preparation Rubber Tired Dozers 1 8.00 247 0.40
Site Preparation Tractors/Loaders/Backhoes 1 8.00 97 0.37 Grading Excavators 1 8.00 158 0.38
Grading Graders 1 8.00 187 0.41
Grading Rubber Tired Dozers 1 8.00 247 0.40
Grading Scrapers 1 8.00 367 0.48
Grading Tractors/Loaders/Backhoes 1 8.00 97 0.37
Pipeline Construction Cranes 1 7.00 231 0.29
Pipeline Construction Forklifts 1 8.00 89 0.20
Pipeline Construction Generator Sets 1 8.00 84 0.74
Pipeline Construction Tractors/Loaders/Backhoes 1 7.00 97 0.37 Pipeline Construction Welders 1 8.00 46 0.45
Paving Pavers 1 8.00 130 0.42
Paving Paving Equipment 1 8.00 132 0.36
Paving Rollers 1 8.00 80 0.38
Trips and VMT
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 9.7100e0030.0000 9.7100e0031.4700e0030.0000 1.4700e0030.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0581 0.5657 0.3844 7.0000e0040.0284 0.0284 0.0266 0.0266 0.0000 60.9694 60.9694 0.0147 0.0000 61.3376 Total 0.0581 0.5657 0.3844 7.0000e0049.7100e0030.0284 0.0381 1.4700e0030.0266 0.0280 0.0000 60.9694 60.9694 0.0147 0.0000 61.3376

3.1 Mitigation Measures Construction

3.2 Demolition - 2021
Unmitigated Construction On-Site
Phase Name Offroad Equipment
Count
Worker Trip
Number
Vendor Trip
Number
Hauling Trip
Number
Worker Trip
Length
Vendor Trip
Length
Hauling Trip
Length
Worker Vehicle
Class
Vendor
Vehicle Class
Hauling
Vehicle Class
Demolition 0 8.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT Site Preparation 0 5.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT Grading 0 13.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT Pipeline Construction 0 1,123.00 438.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT Paving 0 15.00 0.00 0.00 10.80 7.30 20.00 LD_Mix HDT_Mix HHDT CalEEMod Version: CalEEMod.2016.3.2 Page 8 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual #14..
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 1.0900e0037.1000e0047.4100e0032.0000e0052.2400e0032.0000e0052.2500e0035.9000e0041.0000e0056.1000e0040.0000 1.9403 1.9403 5.0000e0050.0000 1.9416 Total 1.0900e0037.1000e0047.4100e0032.0000e0052.2400e0032.0000e0052.2500e0035.9000e0041.0000e0056.1000e0040.0000 1.9403 1.9403 5.0000e0050.0000 1.9416 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 9.7100e0030.0000 9.7100e0031.4700e0030.0000 1.4700e0030.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0581 0.5657 0.3844 7.0000e0040.0284 0.0284 0.0266 0.0266 0.0000 60.9694 60.9694 0.0147 0.0000 61.3375 Total 0.0581 0.5657 0.3844 7.0000e0049.7100e0030.0284 0.0381 1.4700e0030.0266 0.0280 0.0000 60.9694 60.9694 0.0147 0.0000 61.3375 Mitigated Construction On-Site
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3.2 Demolition - 2021
Unmitigated Construction Off-Site
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 1.0900e0037.1000e0047.4100e0032.0000e0052.2400e0032.0000e0052.2500e0035.9000e0041.0000e0056.1000e0040.0000 1.9403 1.9403 5.0000e0050.0000 1.9416 Total 1.0900e0037.1000e0047.4100e0032.0000e0052.2400e0032.0000e0052.2500e0035.9000e0041.0000e0056.1000e0040.0000 1.9403 1.9403 5.0000e0050.0000 1.9416

3.3 Site Preparation - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0247 0.2573 0.1260 2.3000e0040.0129 0.0129 0.0119 0.0119 0.0000 20.4707 20.4707 6.6200e0030.0000 20.6362 Total 0.0247 0.2573 0.1260 2.3000e0040.0000 0.0129 0.0129 0.0000 0.0119 0.0119 0.0000 20.4707 20.4707 6.6200e0030.0000 20.6362 CalEEMod Version: CalEEMod.2016.3.2 Page 10 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.2 Demolition - 2021
Mitigated Construction Off-Site
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ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 3.9000e0042.6000e0042.6400e0031.0000e0058.0000e0041.0000e0058.0000e0042.1000e0041.0000e0052.2000e0040.0000 0.6930 0.6930 2.0000e0050.0000 0.6934 Total 3.9000e0042.6000e0042.6400e0031.0000e0058.0000e0041.0000e0058.0000e0042.1000e0041.0000e0052.2000e0040.0000 0.6930 0.6930 2.0000e0050.0000 0.6934 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0247 0.2573 0.1260 2.3000e0040.0129 0.0129 0.0119 0.0119 0.0000 20.4706 20.4706 6.6200e0030.0000 20.6362 Total 0.0247 0.2573 0.1260 2.3000e0040.0000 0.0129 0.0129 0.0000 0.0119 0.0119 0.0000 20.4706 20.4706 6.6200e0030.0000 20.6362 Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2016.3.2 Page 11 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.3 Site Preparation - 2021
Unmitigated Construction Off-Site
#14..
- 704 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 3.9000e0042.6000e0042.6400e0031.0000e0058.0000e0041.0000e0058.0000e0042.1000e0041.0000e0052.2000e0040.0000 0.6930 0.6930 2.0000e0050.0000 0.6934 Total 3.9000e0042.6000e0042.6400e0031.0000e0058.0000e0041.0000e0058.0000e0042.1000e0041.0000e0052.2000e0040.0000 0.6930 0.6930 2.0000e0050.0000 0.6934

3.4 Grading - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 8.6000e0040.0000 8.6000e0049.0000e0050.0000 9.0000e0050.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1565 1.7406 1.0088 2.1200e0030.0744 0.0744 0.0685 0.0685 0.0000 186.5101 186.5101 0.0603 0.0000 188.0181 Total 0.1565 1.7406 1.0088 2.1200e0038.6000e0040.0744 0.0753 9.0000e0050.0685 0.0685 0.0000 186.5101 186.5101 0.0603 0.0000 188.0181 CalEEMod Version: CalEEMod.2016.3.2 Page 12 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.3 Site Preparation - 2021
Mitigated Construction Off-Site
#14..
- 705 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.7800e0031.8200e0030.0189 5.0000e0055.7200e0034.0000e0055.7600e0031.5200e0034.0000e0051.5600e0030.0000 4.9548 4.9548 1.3000e0040.0000 4.9580 Total 2.7800e0031.8200e0030.0189 5.0000e0055.7200e0034.0000e0055.7600e0031.5200e0034.0000e0051.5600e0030.0000 4.9548 4.9548 1.3000e0040.0000 4.9580 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Fugitive Dust 8.6000e0040.0000 8.6000e0049.0000e0050.0000 9.0000e0050.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1565 1.7406 1.0088 2.1200e0030.0744 0.0744 0.0685 0.0685 0.0000 186.5099 186.5099 0.0603 0.0000 188.0179 Total 0.1565 1.7406 1.0088 2.1200e0038.6000e0040.0744 0.0753 9.0000e0050.0685 0.0685 0.0000 186.5099 186.5099 0.0603 0.0000 188.0179 Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2016.3.2 Page 13 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.4 Grading - 2021
Unmitigated Construction Off-Site
#14..
- 706 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.7800e0031.8200e0030.0189 5.0000e0055.7200e0034.0000e0055.7600e0031.5200e0034.0000e0051.5600e0030.0000 4.9548 4.9548 1.3000e0040.0000 4.9580 Total 2.7800e0031.8200e0030.0189 5.0000e0055.7200e0034.0000e0055.7600e0031.5200e0034.0000e0051.5600e0030.0000 4.9548 4.9548 1.3000e0040.0000 4.9580

3.5 Pipeline Construction - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 CalEEMod Version: CalEEMod.2016.3.2 Page 14 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.4 Grading - 2021
Mitigated Construction Off-Site
#14..
- 707 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2016.3.2 Page 15 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.5 Pipeline Construction - 2021
Unmitigated Construction Off-Site
#14..
- 708 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

3.6 Paving - 2021
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0314 0.3230 0.3663 5.7000e0040.0169 0.0169 0.0156 0.0156 0.0000 50.0587 50.0587 0.0162 0.0000 50.4635 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0314 0.3230 0.3663 5.7000e0040.0169 0.0169 0.0156 0.0156 0.0000 50.0587 50.0587 0.0162 0.0000 50.4635 CalEEMod Version: CalEEMod.2016.3.2 Page 16 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.5 Pipeline Construction - 2021
Mitigated Construction Off-Site
#14..
- 709 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.9200e0031.9100e0030.0198 6.0000e0056.0000e0034.0000e0056.0400e0031.5900e0034.0000e0051.6300e0030.0000 5.1973 5.1973 1.4000e0040.0000 5.2007 Total 2.9200e0031.9100e0030.0198 6.0000e0056.0000e0034.0000e0056.0400e0031.5900e0034.0000e0051.6300e0030.0000 5.1973 5.1973 1.4000e0040.0000 5.2007 Unmitigated Construction Off-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 0.0314 0.3230 0.3663 5.7000e0040.0169 0.0169 0.0156 0.0156 0.0000 50.0586 50.0586 0.0162 0.0000 50.4634 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0314 0.3230 0.3663 5.7000e0040.0169 0.0169 0.0156 0.0156 0.0000 50.0586 50.0586 0.0162 0.0000 50.4634 Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2016.3.2 Page 17 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.6 Paving - 2021
#14..
- 710 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.9200e0031.9100e0030.0198 6.0000e0056.0000e0034.0000e0056.0400e0031.5900e0034.0000e0051.6300e0030.0000 5.1973 5.1973 1.4000e0040.0000 5.2007 Total 2.9200e0031.9100e0030.0198 6.0000e0056.0000e0034.0000e0056.0400e0031.5900e0034.0000e0051.6300e0030.0000 5.1973 5.1973 1.4000e0040.0000 5.2007

3.6 Paving - 2022
Unmitigated Construction On-Site
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 5.7900e0030.0584 0.0766 1.2000e0042.9800e0032.9800e0032.7400e0032.7400e0030.0000 10.5145 10.5145 3.4000e0030.0000 10.5995 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 5.7900e0030.0584 0.0766 1.2000e0042.9800e0032.9800e0032.7400e0032.7400e0030.0000 10.5145 10.5145 3.4000e0030.0000 10.5995 CalEEMod Version: CalEEMod.2016.3.2 Page 18 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.6 Paving - 2021
Mitigated Construction Off-Site
#14..
- 711 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 5.7000e0043.6000e0043.8000e0031.0000e0051.2600e0031.0000e0051.2700e0033.3000e0041.0000e0053.4000e0040.0000 1.0524 1.0524 3.0000e0050.0000 1.0531 Total 5.7000e0043.6000e0043.8000e0031.0000e0051.2600e0031.0000e0051.2700e0033.3000e0041.0000e0053.4000e0040.0000 1.0524 1.0524 3.0000e0050.0000 1.0531 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Off-Road 5.7900e0030.0584 0.0766 1.2000e0042.9800e0032.9800e0032.7400e0032.7400e0030.0000 10.5145 10.5145 3.4000e0030.0000 10.5995 Paving 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 5.7900e0030.0584 0.0766 1.2000e0042.9800e0032.9800e0032.7400e0032.7400e0030.0000 10.5145 10.5145 3.4000e0030.0000 10.5995 Mitigated Construction On-Site
CalEEMod Version: CalEEMod.2016.3.2 Page 19 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.6 Paving - 2022
Unmitigated Construction Off-Site
#14..
- 712 -

4.0 Operational Detail - Mobile

4.1 Mitigation Measures Mobile
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 5.7000e0043.6000e0043.8000e0031.0000e0051.2600e0031.0000e0051.2700e0033.3000e0041.0000e0053.4000e0040.0000 1.0524 1.0524 3.0000e0050.0000 1.0531 Total 5.7000e0043.6000e0043.8000e0031.0000e0051.2600e0031.0000e0051.2700e0033.3000e0041.0000e0053.4000e0040.0000 1.0524 1.0524 3.0000e0050.0000 1.0531 CalEEMod Version: CalEEMod.2016.3.2 Page 20 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

3.6 Paving - 2022
Mitigated Construction Off-Site
#14..
- 713 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Mitigated 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Unmitigated 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

4.2 Trip Summary Information

4.3 Trip Type Information
Average Daily Trip Rate Unmitigated Mitigated
Land Use Weekday Saturday Sunday Annual VMT Annual VMT
General Light Industry 0.00 0.00 0.00
Total 0.00 0.00 0.00
Miles Trip % Trip Purpose %
Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass-by General Light Industry 5.00 0.00 0.00 100.00 0.00 0.00 100 0 0

5.0 Energy Detail
Historical Energy Use: N

4.4 Fleet Mix
Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS MCY SBUS MH General Light Industry 1.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 CalEEMod Version: CalEEMod.2016.3.2 Page 21 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual #14..
- 714 -
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Electricity
Mitigated

0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Electricity
Unmitigated

0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 NaturalGas
Mitigated

0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 NaturalGas
Unmitigated

0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

5.2 Energy by Land Use - NaturalGas
Unmitigated
NaturalGa
s Use
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Land Use kBTU/yr tons/yr MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 CalEEMod Version: CalEEMod.2016.3.2 Page 22 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

5.1 Mitigation Measures Energy
#14..
- 715 -
CalEEMod Version: CalEEMod.2016.3.2 Page 23 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

5.2 Energy by Land Use - NaturalGas
Mitigated
NaturalGa
s Use
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Land Use kBTU/yr tons/yr MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000

5.3 Energy by Land Use - Electricity
Unmitigated
Electricity
Use
Total CO2 CH4 N2O CO2e
Land Use kWh/yr MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
#14..
- 716 -

6.0 Area Detail

6.1 Mitigation Measures Area
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
Category tons/yr MT/yr
Mitigated 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Unmitigated 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Electricity
Use
Total CO2 CH4 N2O CO2e
Land Use kWh/yr MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
CalEEMod Version: CalEEMod.2016.3.2 Page 24 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

5.3 Energy by Land Use - Electricity
Mitigated
#14..
- 717 -

7.0 Water Detail
ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
Architectural
Coating

1.8583 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer
Products

10.4388 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 ROG NOx CO SO2 Fugitive
PM10
Exhaust
PM10
PM10
Total
Fugitive
PM2.5
Exhaust
PM2.5
PM2.5
Total
Bio- CO2 NBio- CO2 Total CO2 CH4 N2O CO2e
SubCategory tons/yr MT/yr
Architectural
Coating

1.8583 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer
Products

10.4388 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 12.2971 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Mitigated
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6.2 Area by SubCategory
Unmitigated
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Total CO2 CH4 N2O CO2e
Category MT/yr
Mitigated 0.0000 0.0000 0.0000 0.0000
Unmitigated 0.0000 0.0000 0.0000 0.0000

7.2 Water by Land Use
Unmitigated
Indoor/Out
door Use
Total CO2 CH4 N2O CO2e
Land Use Mgal MT/yr
General Light
Industry
0 / 0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
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7.0 Water Detail

7.1 Mitigation Measures Water
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Indoor/Out
door Use
Total CO2 CH4 N2O CO2e
Land Use Mgal MT/yr
General Light
Industry
0 / 0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000

8.0 Waste Detail

8.1 Mitigation Measures Waste
Category/Year
Total CO2 CH4 N2O CO2e
MT/yr
Mitigated 0.0000 0.0000 0.0000 0.0000
Unmitigated 0.0000 0.0000 0.0000 0.0000
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7.2 Water by Land Use
Mitigated
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Waste
Disposed
Total CO2 CH4 N2O CO2e
Land Use tons MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
Waste
Disposed
Total CO2 CH4 N2O CO2e
Land Use tons MT/yr
General Light
Industry
0 0.0000 0.0000 0.0000 0.0000
Total 0.0000 0.0000 0.0000 0.0000
Mitigated

9.0 Operational Offroad
Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fuel Type CalEEMod Version: CalEEMod.2016.3.2 Page 28 of 30 Date: 5/5/2021 4:05 PM Riverdale Park Tract Water System Consolidation Project - Air District, Annual

8.2 Waste by Land Use
Unmitigated
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11.0 Vegetation
Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fuel Type Boilers
Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type User Defined Equipment
Equipment Type Number
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10.0 Stationary Equipment
Fire Pumps and Emergency Generators
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APPENDIX C
Special-Status Species Lists
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Note: The Section 508 amendment of the Rehabilitation Act of 1973 requires that the information in federal documents be accessible to individuals with disabilities. The City of Modesto has made every effort to ensure that the information in the Initial Study/Mitigated Negative Declaration for the Riverdale Park Tract Community Services District Water System Consolidation Project, Modesto, Stanislaus County, California is accessible. However, this appendix is not fully compliant with Section 508, and readers with disabilities are encouraged to contact Jim Alves as the City of Modesto at [email protected] or (209) 571-5557 if they would like access to the information. #14..
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National Marine Fisheries Service ESA list for
Quad Name Brush Lake
Quad Number
ESA Anadromous Fish
SONCC Coho ESU (T) -
CCC Coho ESU (E) -
CC Chinook Salmon ESU (T) -
CVSR Chinook Salmon ESU (T) -
SRWR Chinook Salmon ESU (E) -
NC Steelhead DPS (T) -
CCC Steelhead DPS (T) -
SCCC Steelhead DPS (T) -
SC Steelhead DPS (E) -
37121-E1
CCV Steelhead DPS (T) -
Eulachon (T) -
sDPS Green Sturgeon (T) -
X
ESA Anadromous Fish Critical Habitat
SONCC Coho Critical Habitat -
CCC Coho Critical Habitat -
CC Chinook Salmon Critical Habitat -
CVSR Chinook Salmon Critical Habitat -
SRWR Chinook Salmon Critical Habitat -
NC Steelhead Critical Habitat -
CCC Steelhead Critical Habitat -
SCCC Steelhead Critical Habitat -
SC Steelhead Critical Habitat -
CCV Steelhead Critical Habitat -
Eulachon Critical Habitat -
sDPS Green Sturgeon Critical Habitat -
X
ESA Marine Invertebrates
Range Black Abalone (E) -
Range White Abalone (E) -
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ESA Marine Invertebrates Critical Habitat
Black Abalone Critical Habitat -
ESA Sea Turtles
East Pacific Green Sea Turtle (T) -
Olive Ridley Sea Turtle (T/E) -
Leatherback Sea Turtle (E) -
North Pacific Loggerhead Sea Turtle (E) -
ESA Whales
Blue Whale (E) -
Fin Whale (E) -
Humpback Whale (E) -
Southern Resident Killer Whale (E) -
North Pacific Right Whale (E) -
Sei Whale (E) -
Sperm Whale (E) -
ESA Pinnipeds
Guadalupe Fur Seal (T) -
Steller Sea Lion Critical Habitat -
Essential Fish Habitat
Coho EFH -
Chinook Salmon EFH -
Groundfish EFH -
Coastal Pelagics EFH -
Highly Migratory Species EFH -
X
MMPA Species (See list at left)
ESA and MMPA Cetaceans/Pinnipeds
See list at left and consult the NMFS Long Beach office 562-980-4000
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MMPA Cetaceans -
MMPA Pinnipeds -
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Selected Elements by Scientific Name
California Department of Fish and Wildlife
California Natural Diversity Database
Query Criteria: Quad IS (Ripon (3712162) OR Salida (3712161) OR Riverbank (3712068) OR Westley (3712152) OR Brush Lake (3712151) OR Ceres (3712058)) Rare Plant
Rank/CDFW
Species Element Code Federal Status State Status Global Rank State Rank SSC or FP Agelaius tricolor ABPBXB0020 None Threatened G2G3 S1S2 SSC tricolored blackbird
Ambystoma californiense AAAAA01180 Threatened Threatened G2G3 S2S3 WL California tiger salamander
Anniella pulchra ARACC01020 None None G3 S3 SSC
Northern California legless lizard
Ardea herodias ABNGA04010 None None G5 S4
great blue heron
Athene cunicularia ABNSB10010 None None G4 S3 SSC
burrowing owl
Atriplex cordulata var. cordulata PDCHE040B0 None None G3T2 S2 1B.2 heartscale
Atriplex minuscula PDCHE042M0 None None G2 S2 1B.1
lesser saltscale
Atriplex subtilis PDCHE042T0 None None G1 S1 1B.2
subtle orache
Blepharizonia plumosa PDAST1C011 None None G1G2 S1S2 1B.1 big tarplant
Bombus caliginosus IIHYM24380 None None G4? S1S2
obscure bumble bee
Bombus crotchii IIHYM24480 None Candidate G3G4 S1S2
Endangered Crotch bumble bee
Branchinecta conservatio ICBRA03010 Endangered None G2 S2 Conservancy fairy shrimp
Branchinecta lynchi ICBRA03030 Threatened None G3 S3
vernal pool fairy shrimp
Branta hutchinsii leucopareia ABNJB05035 Delisted None G5T3 S3 WL cackling (=Aleutian Canada) goose
Buteo swainsoni ABNKC19070 None Threatened G5 S3
Swainson's hawk
Caulanthus lemmonii PDBRA0M0E0 None None G3 S3 1B.2
Lemmon's jewelflower
Coastal and Valley Freshwater Marsh CTT52410CA None None G3 S2.1 Coastal and Valley Freshwater Marsh
Coccyzus americanus occidentalis ABNRB02022 Threatened Endangered G5T2T3 S1 western yellow-billed cuckoo
Corynorhinus townsendii AMACC08010 None None G3G4 S2 SSC Townsend's big-eared bat
Commercial Version -- Dated November, 1 2020 -- Biogeographic Data Branch Page 1 of 3 Report Printed on Monday, November 23, 2020 Information Expires 5/1/2021 #14..
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Selected Elements by Scientific Name
California Department of Fish and Wildlife
California Natural Diversity Database
Rare Plant
Rank/CDFW
Species Element Code Federal Status State Status Global Rank State Rank SSC or FP Desmocerus californicus dimorphus IICOL48011 Threatened None G3T2 S3 valley elderberry longhorn beetle
Egretta thula ABNGA06030 None None G5 S4
snowy egret
Elderberry Savanna CTT63440CA None None G2 S2.1
Elderberry Savanna
Eryngium racemosum PDAPI0Z0S0 None Endangered G1 S1 1B.1 Delta button-celery
Eschscholzia rhombipetala PDPAP0A0D0 None None G1 S1 1B.1 diamond-petaled California poppy
Falco columbarius ABNKD06030 None None G5 S3S4 WL
merlin
Gonidea angulata IMBIV19010 None None G3 S1S2
western ridged mussel
Great Valley Cottonwood Riparian Forest CTT61410CA None None G2 S2.1 Great Valley Cottonwood Riparian Forest
Great Valley Mixed Riparian Forest CTT61420CA None None G2 S2.2 Great Valley Mixed Riparian Forest
Great Valley Valley Oak Riparian Forest CTT61430CA None None G1 S1.1 Great Valley Valley Oak Riparian Forest
Lasthenia chrysantha PDAST5L030 None None G2 S2 1B.1
alkali-sink goldfields
Lepidurus packardi ICBRA10010 Endangered None G4 S3S4
vernal pool tadpole shrimp
Linderiella occidentalis ICBRA06010 None None G2G3 S2S3 California linderiella
Lytta moesta IICOL4C020 None None G2 S2
moestan blister beetle
Melospiza melodia ABPBXA3010 None None G5 S3? SSC
song sparrow ("Modesto" population)
Mylopharodon conocephalus AFCJB25010 None None G3 S3 SSC hardhead
Neotoma fuscipes riparia AMAFF08081 Endangered None G5T1Q S1 SSC riparian (=San Joaquin Valley) woodrat
Oncorhynchus mykiss irideus pop. 11 AFCHA0209K Threatened None G5T2Q S2 steelhead - Central Valley DPS
Puccinellia simplex PMPOA53110 None None G3 S2 1B.2
California alkali grass
Spea hammondii AAABF02020 None None G3 S3 SSC
western spadefoot
Sphenopholis obtusata PMPOA5T030 None None G5 S2 2B.2
prairie wedge grass
Commercial Version -- Dated November, 1 2020 -- Biogeographic Data Branch Page 2 of 3 Report Printed on Monday, November 23, 2020 Information Expires 5/1/2021 #14..
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Selected Elements by Scientific Name
California Department of Fish and Wildlife
California Natural Diversity Database
Rare Plant
Rank/CDFW
Species Element Code Federal Status State Status Global Rank State Rank SSC or FP Sylvilagus bachmani riparius AMAEB01021 Endangered Endangered G5T1 S1 riparian brush rabbit
Vireo bellii pusillus ABPBW01114 Endangered Endangered G5T2 S2 least Bell's vireo
Vulpes macrotis mutica AMAJA03041 Endangered Threatened G4T2 S2 San Joaquin kit fox
Record Count: 43
Commercial Version -- Dated November, 1 2020 -- Biogeographic Data Branch Page 3 of 3 Report Printed on Monday, November 23, 2020 Information Expires 5/1/2021 #14..
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Riverdale MND Response to Comments
Stanislaus County Department of Environmental Resources, Hazardous Materials Division (February 2, 2022)
Comment Response
The Stanislaus County of Environmental Resources,
Hazardous Materials Division concurred that the
project would not have a significant effect on the
environment. The commenter recommended
preparation of a Phase I, and if necessary, a Phase II
study for any site containing or formerly containing
residences or farm buildings or structures.

A Phase I Environmental Site Assessment is
currently being prepared as part of the City
of Modesto's due diligence process for the
well site. The City will contact the
Department of Environmental Resources
regarding appropriate permitting
requirements for hazardous materials and/or
wastes. No revisions to the IS/MND are
necessary in response to this comment
letter.

Department of Toxic Substances Control (February 8, 2022) Comment Response
The commenter stated that there are two landfill sites
in the vicinity of the subject project: Modesto Disposal Services and Rudy Bonzi's Sanitary Landfill.

No revisions to the IS/MND are necessary in
response to this comment letter.

Stanislaus County Environmental Review Committee (February 24, 2022) Comment Response
The commenter stated that the Environmental Review
Committee has no comments.

No revisions to the IS/MND are necessary in
response to this comment letter.

San Joaquin Valley Air Pollution Control District (February 28, 2022) Comment Response
1a) Construction Emissions. The commenter
recommended the project utilize clean off-road
construction equipment, including the latest tier
equipment as feasible.

The City would require the construction
contractor to utilize clean off-road
construction equipment, including the latest
tier equipment as feasible. No revisions to
the IS/MND are necessary in response to
this comment letter.
2a) District Rules 2010 and 2201. The commenter
stated the project may be subject to District Rule 2010 (Permits Required) and Rule 2201 (New and Modified
Stationary Source Review) and may require District
permits. The commenter stated a finalized Authority to
Mitigation Measure AQ-1 requires
compliance with all applicable District rules
and acquisition of all applicable District
permits. No revisions to the IS/MND are
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Construct (ATC) permit must be issued to the project
proponent prior to commencing construction on any
permit-required equipment or process.
necessary in response to this comment
letter.
2b) District Rule 9510. The commenter stated the
project does not meet the definition of a "Development
Project", as defined in District Rule 9510 section 3.13, and District Rule 9510 requirements and related fees
do not apply to the project.

No revisions to the IS/MND are necessary in
response to this comment.
2c) District Rule 4002. The commenter stated the
project may be subject to District Rule 4002, which
requires a thorough inspection for asbestos to be
conducted before any regulated facility is demolished
or renovated.

Mitigation Measure AQ-1 requires
compliance with all applicable District rules
and acquisition of all applicable District
permits. No revisions to the IS/MND are
necessary in response to this comment
letter.
2d) District Regulation VIII. The commenter stated
the project proponent may be required to submit a
Construction Notification Form or submit and receive
approval of a Dust Control Plan prior to commencing
any earthmoving activities as described in Regulation
VIII, specifically Rule 8021 – Construction, Demolition, Excavation, Extraction, and Other Earthmoving
Activities.

Mitigation Measure AQ-1 requires
compliance with all applicable District rules
and acquisition of all applicable District
permits. No revisions to the IS/MND are
necessary in response to this comment
letter.
2e) Other District Rules and Regulations. The
commenter stated the project may also be subject to
the following District rules: Rule 4102 (Nuisance), Rule 4601 (Architectural Coatings), and Rule 4641
(Cutback, Slow Cure, and Emulsified Asphalt, Paving
and Maintenance Operations).

Central Valley Regional Water Quality Control Board (March 2, 2022) Comment Response
The commenter provides a summary of the Central
Valley Regional Water Quality Control Board's
regulatory responsibilities and permitting requirements.

The proposed project would not result in
impacts to any surface water resources and
would require preparation of a Stormwater
Pollution Prevention Plan (SWPPP) in
compliance with all state and local agency
requirements. No revisions to the IS/MND
are necessary in response to this comment
letter.
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DEPARTMENT OF ENVIRONMENTAL RESOURCES
3800 Cornucopia Way, Suite C, Modesto, CA 95358-9492
Phone: (209) 525-6700 Fax: (209) 525-6774
esa

February 8, 2022
TO: JIM ALVES, CITY OF MODESTO UTILITIES DEPARTMENT
FROM: STEPH FREIER, DEPARTMENT OF ENVIRONMENTAL RESOURCES SUBJECT: ENVIRONMENTAL REFERRAL – CITY OF MODESTO – NOTICE OF INTENT TO ADOPT MITIGATED NEGATIVE DECLATION –

RIVERDALE PARK TRACT COMMUNITY SERVICES DISTRICT

WATER SYSTEM CONSOLIDATION PROJECT
The Stanislaus County Hazardous Materials Division has reviewed the information available on the project mentioned above, and it is our position that the project will not have a significant effect on the environment. Listed below are regulatory requirements that need to be implemented as conditions of approval:

The applicant shall determine, to the satisfaction of the Department of Environmental Resources (DER), that a site containing (or formerly containing) residences or farm buildings, or structures, has been fully investigated (via Phase I study, and if necessary, Phase II study) prior to the issuance of a grading permit. Any discovery of underground storage tanks, former underground storage tank locations, buried chemicals, buried refuse, or contaminated soil shall be brought to the immediate attention of DER.

BUSINESSES W/ HAZMAT
The applicant should contact the DER regarding appropriate permitting requirements for hazardous materials and/or wastes. Applicant and/or occupants handling hazardous materials or generating hazardous wastes must notify the DER relative to the following: (Calif. H&S, Division 20)
A. Permit for the underground storage of hazardous materials at facility.

B. Notify DER for storing hazardous materials on aboveground tanks.

C. Requirements for registering as a handler of hazardous materials in the County and submittal of a Hazardous Materials Business Plan (HMBP) into the California Environmental Reporting System (CERS) by handlers of materials in excess of 55 gallons, 500 pounds of a hazardous material, or of 200 cubic feet of compressed gas.

D. Generators of hazardous waste must notify DER relative to the:
(1) quantities of waste generated; and (2) proposed waste disposal practices.

Generators of hazardous waste must also use the CERS data base to submit chemical and facility information to the DER.
• Requirement to obtain and maintain an active EPA ID number with the California Environmental Protection Agency Department of Toxic Substances Control (DTSC) using Permanent State ID Number Application DTSC Form 1358 (https://dtsc.ca.gov/permanent-state-epa-id-numbers/).
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Page 2 ends

Modesto City CouncilAugust 9, 2022

Modesto City Council
August 9, 2022