Lathrop City Council
April 11, 2022

ITEM 4. 5

CITY MANAGER' S REPORT
APRIL 11, 2022 CITY COUNCIL REGULAR MEETING
ITEM: APPROVAL OF PROFESSIONAL CONSULTING

SERVICES AGREEMENT WITH EKI ENVIRONMENT &
WATER, INC. FOR INTEGRATED WATER RESOURCES
MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP
WW 22- 24 AND RELATED BUDGET AMENDMENT
RECOMMENDATION: Adopt Resolution Approving Professional Consulting Services Agreement with EKI Environment & Water,
Inc. for Integrated Water Resources Master Plan
Amendment, CIP PW 22- 19 ( Water) and CIP WW 22-
24 ( Wastewater and Recycled Water) and Related
Budget Amendment
SUMMARY:

The Public Works Department is responsible for management and maintenance of City water, sewer, and recycled water facilities. A key tool in accomplishing this task is master plan documents collectively referred to as the City' s Integrated Water Resources Master Plan ( IWRMP). The IWRMP examines the existing utility systems and provides recommendations to ensure the City has adequate facilities to support future growth, support operations, budgeting, utility rate studies and Capital Improvement Project ( CIP) programming.

An update is needed to the City' s current IWRMP to account for recent development, proposed land use changes and new regulatory requirements. City has applied for and awarded a Regional Early Action Planning ( REAP) grant in the amount of $ 55, 980 from the San Joaquin Council of Governments ( SJCOG) for the City' s Integrated Water Resources Master Plan.

Staff is requesting that Council approve an agreement with EKI Environment & Water, Inc. ( EKI) to prepare a comprehensive IWRMP Amendment in the amount of 421, 900. Should Council approve the agreement with EKI, staff will return at a later date to review the IWRMP with Council prior to finalizing.

Sufficient funds have been allocated in the adopted FY 2021/ 22 Budget for CIP PW 22- 19; however, staff is requesting Council approve a budget amendment to transfer 55, 980 from the State Grants Fund ( 2160) to CIP WW 22- 24.

BACKGROUND:

The IWRMP is used to forecast and update water and sewer demand projections, address changes in regulatory requirements, population and growth projections, proposed land use, climate change and other factors.

CITY MANAGER' S REPORT PAGE 2
APRIL 11, 2022 CITY COUNCIL REGULAR MEETING

APPROVAL OF PROFESSIONAL CONSULTING SERVICES AGREEMENT WITH EKI ENVIRONMENT & WATER, INC. FOR INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND WW 22- 24
The IWRMP is necessary for implementation of the City' s General Plan and to support utility operations, budget, rate studies, and is used as the basis for CIP programming, developing land use planning and development fees.

In 2016, EKI and De Novo assisted the City to update the IWRMP and prepare the associated project Environmental Impact Report which were approved and adopted by Council in December 2019.

REASON FOR RECOMMENDATION:

Approval of an agreement with EKI is recommended to provide a comprehensive amendment to the City' s water, sewer, and recycled water master plan documents in order to support growth in the City while maintaining safe, reliable utility services for existing users.

FISCAL IMPACT:

The cost of the agreement with EKI to provide the IWRMP Amendment is $ 421, 900.

The cost to update each component of the IWRMP is as follows:

Master Plan Update Com onent Cost
Water S stem Master Plan Amendment PW 22- 19 148, 000
Recycled Water System Master Plan Amendment WW 22- 24) $ 90, 500 Wastewater S stem Master Plan Amendment WW 22- 24 183, 400 Sufficient funds have been allocated in the adopted FY 2021/ 22 Budget for CIP PW 22- 19 IWRMP Update ( Water); however, funds approved for CIP WW 22- 24 IWRMP Update ( Wastewater and Recycled Water) are insufficient to approve the agreement with EKI to prepare the IWRMP Amendment. City has applied for and awarded an REAP grant for $ 55, 980 from S) COG for the City' s Integrated Water Resources Master Plan. Therefore, staff requests Council approve the following budget amendment:

Increase Revenue
2160- 80- 00- 331- 05- 00 55, 980
Increase Transfer Out
2160- 99- 00- 990- 9010 55, 980
Increase Transfer In
6090- 99- 00- 393- 00- 00 CIP WW 22- 24 $ 55, 980
Increase Appropriation CIP WW 22- 24 $ 55, 980
6090- 80- 00- 420- 83- 00
CITY MANAGER' S REPORT PAGE 3
APRIL 11, 2022 CITY COUNCIL REGULAR MEETING

APPROVAL OF PROFESSIONAL CONSULTING SERVICES AGREEMENT WITH EKI ENVIRONMENT & WATER, INC. FOR INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND WW 22- 24
Staff is working with each developer to ensure that they fund their proportionate share of the IWRMP. Any additional funds received from development will be placed in the appropriate CIP and will be accounted for at the end of the fiscal year.

ATTACH M ENTS:

A. Resolution Approving Professional Consulting Services Agreement with EKI Environment & Water, Inc. for Integrated Water Resources Master Plan Amendment, CIP PW 22- 19 ( Water) and CIP WW 22- 24 ( Wastewater and Recycled Water) and Related Budget Amendment
B. Professional Consulting Services Agreement with EKI Environment & Water, Inc., for Integrated Water Resources Master Plan Amendment, CIP PW 22- 19 Water) and CIP WW 22- 24 ( Wastewater and Recycled Water) CITY MANAGER' S REPORT PAGE 4
APRIL 11, 2022 CITY COUNCIL REGULAR MEETING

APPROVAL OF PROFESSIONAL CONSULTING SERVICES AGREEMENT WITH EKI ENVIRONMENT & WATER, INC. FOR INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND WW 22- 24
APPROVALS:
5- d 31''--
Greg ibson Date
Sen' r Civil Engineer
Y • Zo2z
Michael King Date
Puf lic Works Director
a ylyiCari Jam s Date
Finance ir ctor
l. /- Z O Z L
Salvador Navarrete Date
City Attorney
Ste Salvatore Date
City Manager
RESOLUTION NO. 22-

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LATHROP

APPROVING PROFESSIONAL CONSULTING SERVICES AGREEMENT WITH EKI ENVIRONMENT & WATER, INC. FOR INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 ( WATER) AND CIP WW 22- 24

WASTEWATER AND RECYCLED WATER) AND RELATED BUDGET

AMENDMENT
WHEREAS, the City' s water, sewer and recycled water master plan documents, collectively referred to as the City' s Integrated Water Resources Master Plan ( IWRMP) is used to forecast and update water and sewer demand projections, address changes in regulatory requirements, population and growth projections, proposed land use, climate change and other factors; and WHEREAS, the IWRMP is used to support updates to regulatory compliance documents, and is needed for implementation of the City' s General Plan, to support utility operations, budget, rate studies, and used as the basis for CIP programming, developing land use planning and development fees; and
WHEREAS, in 2016, EKI Environment & Water, Inc. ( EKI) and De Novo Planning Group ( De Novo) assisted the City to update the IWRMP and prepare the associated project Environmental Impact Report which were approved and adopted by Council in December, 2019; and
WHEREAS, since adoption of IWRMP, significant changes in projected water demands and supplies, proposed land development and other factors have necessitated a comprehensive amendment to the IWRMP; and WHEREAS, approval of an agreement with EKI is recommended to provide a comprehensive amendment to the City' s water, sewer, and recycled water master plan documents in order to support growth in the City while maintaining safe, reliable utility services for existing users; and
WHEREAS, the cost of the agreement with EKI to provide the IWRMP Amendment is $ 421, 900; and
WHEREAS, the cost to update each component of the IWRMP is as follows:

Master Plan U date Com onent Cost
Water S stem Master Plan Amendment PW 22- 19 148, 000
Rec cled Water S stem Master Plan Amendment WW 22- 24 $ 90, 500 Wastewater S stem Master Plan Amendment ( WW 22- 24) 183, 400 WHEREAS, the City has applied for and awarded a Regional Early Action Planning ( REAP) grant in the amount of $ 55, 980 from the San Joaquin Council of Governments ( SJCOG) that will also be used to pay for the IWRMP Amendment; and
WHEREAS, sufficient funds have been allocated in the adopted FY 2021/ 22 Budget for CIP PW 22- 19 IWRMP Update ( Water); however, funds approved for CIP WW 22 24 IWRMP Update ( Wastewater and Recycled Water) are insufficient to approve the agreement with EKI to prepare the IWRMP Amendment; and WHEREAS, staff is requesting Council approve a budget amendment to transfer $ 55, 980 from the State Grants Fund ( 2160) to CIP WW 22- 24 as follows:

Increase Revenue
2160- 80- 00- 331- 05- 00 55, 980
Increase Transfer Out
2160- 99- 00- 990- 9010 55, 980
Increase Transfer In
6090- 99- 00- 393- 00- 00 CIP WW 22- 24 $ 55, 980
Increase Appropriation CIP WW 22- 24 55, 980
6090- 80- 00- 420- 83- 00
NOW, THEREFORE, BE IT RESOLVED, that the City Council of the City of Lathrop hereby approves an agreement with EKI Environment and Water, Inc. ( EKI) to provide a comprehensive amendment to the City' s Integrated Water Resources Master Plan documents for a cost not to exceed $ 421, 900 to be paid from CIP PW 22- 19 IWRMP Update ( Water) in the amount of $ 148, 000 for the Water System Master Plan Amendment and CIP WW 22- 24 IWRMP Update ( Wastewater and Recycled Water) for the Wastewater System Master Plan Amendment and the Recycled Water System Master Plan Amendment in the amount of $ 273, 900; and BE IT RESOLVED, that Council also approve a budget amendment to transfer $ 55, 980 from the State Grants Fund ( 2160) to CIP WW 22- 24 as detailed above.

The foregoing resolution was passed and adopted this 11th day of April 2022, by the following vote of the City Council, to wit:

AYES:

NOES:

ABSTAIN:

ABSENT:

Sonny Dhaliwal, Mayor
ATTEST: APPROVED AS TO FORM:

Teresa Vargas, City Clerk Salvador Navarrete, City Attorney

ATTACHMENT B

CITY OF LATHROP

AGREEMENT FOR PROFESSIONAL CONSULTING SERVICES WITH EKI ENVIRONMENT & WATER, INC.

TO PROVIDE THE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 ( WATER) AND CIP WW 22-24 ( WASTEWATER AND RECYCLED WATER) THIS AGREEMENT, dated for convenience this 11th day of April 2022, is by and between EKI Environment& Water, Inc. (" CONSULTANT") and the City of Lathrop, a California municipal corporation (" CITY");
RECITALS:

WHEREAS, CONSULTANT is specially trained, experienced, and competent to perform Professional Consulting Services, which are required by this agreement; and WHEREAS, CITY selected the CONSULTANT pursuant to said qualifications; and WHEREAS, CONSULTANT is willing to render such Professional Consulting Services, as hereinafter defined, on the following terms and conditions; NOW, THEREFORE, CONSULTANT and the CITY agree as follows:

AGREEMENT
1) Scope of Service
CONSULTANT agrees to perform Professional Consulting Services in accordance with the scope of work and fee proposal provided by CONSULTANT, attached hereto as Exhibit" A", Exhibit " B", and Exhibit " C" and incorporated herein by reference. CONSULTANT represents it is prepared to and can diligently perform these services in accordance with the upmost standards of its profession and to CITY' S satisfaction. The fee proposal shall include all reimbursable costs required for the performance of the Scope of Services. Payment of additional reimbursable costs considered to be over and above those inherent in the original Scope of Services shall be approved of in advance and in writing, by the CITY. 2) Compensation
CITY hereby agrees to pay CONSULTANT a sum not to exceed $ 421, 900. 00, for the Professional Consulting Services set forth in Exhibit " A", Exhibit " B", and Exhibit " C".

CONSULTANT shall be paid any uncontested sum due and payable within thirty( 30) days of receipt of billings containing all information pursuant to Paragraph 5 below. Compensation for any task must be equal to or less than the percentage of task complete. In no event shall CONSULTANT be entitled to compensation for work not included in Exhibit" A", Exhibit" B", and Exhibit" C" unless a written change order or authorization describing the extra work and payment terms has been executed by CITY' s authorized representative prior to the commencement of the work. Payment is made based on a time and materials basis.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 3) Effective Date and Term
The effective date of this Agreement is April 11, 2022, and it shall terminate no later than June 30, 2024.
4) Independent Contractor Status
It is expressiy understood and agreed by both parties that CONSULTANT, while engaged in carrying out and complying with any of the terms and conditions of this Agreement, is an independent contractor and not an employee of the CITY. As an independent contractor, CONSULTANT is responsible for controlling the means and methods to complete the scope of work described in Exhibit" A" to City' s reasonable satisfaction. CONSULTANT expressly warrants not to represent, at any time or in any manner, that CONSULTANT is an employee of the CITY.
5) Billinqs
CONSULTANT shall submit invoices for completed work on a monthly basis, or as otherwise agreed, providing without limitation, details as to amount of hours, individual performing said work, hourly rate, and indicating to what aspect of the Scope of Services said work is attributable. CONSULTANT' S bills shall include a list of all tasks, a total amount due, the amounts previously billed, and the net amount due on the invoice. Except as specifically authorized by CITY, CONSULTANT shall not bill CITY for duplicate services performed by more than one person. In no event shall CONSULTANT submit any billing for an amount in excess of the rates or the maximum amount of compensation provided in section ( 2) for either task or for the entire Agreement, unless modified by a properly executed amendment. 6) Advice and Status Reportinq
CONSULTANT shall provide the CITY with timely reports, orally or in writing, of all significant developments arising during performance of its services hereunder, and shall furnish to CITY such information as is necessary to enable CITY to monitor the performance of this Agreement. CONSULTANT shall submit to CITY such reports, diagrams, drawings and other work products developed pursuant to the Scope of Services. 7) Auditinq
CITY reserves the right to periodically audit all charges made by CONSULTANT to CITY for services under this Agreement. Upon request, CONSULTANT agrees to furnish CITY, or a designated representative, with necessary information and assistance needed to conduct such an audit. CONSULTANT agrees that CITY or its delegate will have the right to review, obtain and copy all records pertaining to performance of this Agreement. CONSULTANT agrees to provide CITY or its delegate with any relevant information requested and shall permit CITY or its delegate access to its premises, upon reasonable notice, during normal business hours for the purpose of inspecting and copying such books, records, accounts, and other material that may be relevant to a matter under investigation for the purpose of determining compliance with the requirement. CONSULTANT further agrees to maintain such records for a period of three ( 3) years after final payment under this agreement.

CITY OF LATHROP- EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 8) Assiqnment of Personnel
CONSULTANT acknowledges that the CITY has relied on CONSULTANT' s capabilities and on the qualifications of CONSULTANT' s principals and staff as identified in its proposal to CITY. The services shall be performed by, or under the direct supervision, of CONSULTANT' s Authorized Representative: Jonathan Sutter, P. E. CITY shall be notified by CONSULTANT of any change of its Authorized Representative, and CITY is granted the right of approval of all original, additional, and replacement personnel at CITY' s sole discretion, and shall be notified by CONSULTANT of any changes of CONSULTANT' s project staff prior to any change. CONSULTANT shall assign only competent personnel to perform services pursuant to this Agreement. If CITY asks CONSULTANT to remove a person assigned to the work called for under this Agreement, CONSULTANT agrees to do so immediately, without requiring the City to process a reason or explanation for its request. 9) Assiqnment and Subcontractinq
It is recognized by the parties hereto that a substantial inducement to CITY for entering into this Agreement was, and is, the professional reputation and competence of CONSULTANT.

Neither this Agreement nor any interest therein may be assigned by CONSULTANT without the prior written approval of CITY' S authorized representative. CONSULTANT shall not subcontract any portion of the performance contemplated and provided for herein, other than the subcontractors noted in the proposal, without prior written approval of the CITY'S authorized representative.
10) Insurance
On or before beginning any of the services or work called for by any term of this Agreement, CONSULTANT, at its own cost and expense, shall carry, maintain for the duration of the Agreement, and provide proof thereof that is acceptable to the CITY the insurance specified in subsections (a) through (c) below with insurers and under forms of insurance satisfactory in all respects to the CITY. CONSULTANT shall not allow any subcontractor to commence work on any subcontract until all insurance required of the CONSULTANT has also been obtained for the subcontractor. Verification of this insurance shall be submitted and made part of this Agreement prior to execution.
a) Workers' Compensation. CONSULTANT shall, at CONSULTANT' S sole cost and expense, maintain Statutory Workers' Compensation Insurance and Employer' s Liability Insurance for any and all persons employed directly or indirectly by CONSULTANT. Said Statutory Workers' Compensation Insurance and Employer' s Liability Insurance shall be provided with limits of not less than $ 1, 000, 000 ( one million dollars). In the alternative, CONSULTANT may rely on a self- insurance program to meet these requirements provided that the program of self- insurance complies fully with the provisions of the California Labor Code. The insurer, if insurance is provided, or the CONSULTANT, if a program of self- insurance is provided, shall waive all rights of subrogation against the CITY, and provide a waiver of subrogation endorsement in favor of the CITY, its officers, agents, employees and volunteers, for loss arising from work performed under this Agreement.

CITY OF LATHROP- EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22-24 b) Commercial General and Automobile Liabilitv Insurance. CONSULTANT, at CONSULTANT' S own cost and expense, shall maintain commercial general and automobile liability insurance for the period covered by this Agreement in an amount not less than $ 1, 000,000 ( one million dollars) per occurrence, combined single limit coverage for risks associated with the work contemplated by this Agreement.

If Commercial General Liabitity Insurance or an Automobile Liability form or other form with a general aggregate limit is used, either the general aggregate limit shall apply separately to the work to be performed under this Agreement or the general aggregate limit shall be at least twice the required occurrence limit. Such coverage shall include but shall not be limited to, protection against claims arising from bodily and personal injury, including death resulting therefrom, and damage to property resulting from activities contemplated under this Agreement, including the use of owned and nonowned automobiles, and blanket contractual liability. Coverage shall be at least as broad as Insurance Services Office Commercial General Liability occurrence form CG 00 01 ( ed. 04/ 13) ( or equivalent) and Insurance Services Office Business Auto Coverage form CA 00 01 ( ed. 03/ 06) ( or equivalent) for owned, non-owned, and hired autos.

Coverage shall contain a waiver of subrogation in favor of the CITY.

Each of the following shall be included in the insurance coverage or added as an endorsement to the policy:
i) CITY, its officers, employees, agents, and volunteers are to be covered as insured with respect to each of the following: liability arising out of activities performed by or on behalf of CONSULTANT, including the insider' s general supervision of CONSULTANT; products and completed operations of CONSULTANT; premises owned, occupied or used by CONSULTANT. The coverage shall contain no special limitations on the scope of protection afforded to CITY, its officers, employees, agents, or volunteers.
ii) The insurance shall cover on an occurrence or an accident basis, and not on a claim made basis.
iii) An endorsement must state that coverage is primary insurance and that no other insurance affected by the CITY will be called upon to contribute to a loss under the coverage, and be endorsed using Insurance Services Office form CG 20 10 ( or equivalent). iv) Any failure of CONSULTANT to comply with reporting provisions of the policy shall not affect coverage provided to CITY and its officers, employees, agents, and volunteers.
v) Insurance shall be placed with California- admitted insurers with a Best rating of no less than A: VII.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 vi) Each insurance policy required by this AGREEMENT shall be endorsed to state that coverage shall not be cancelled except after thirty( 30) days' prior written notice has been given to the City except that ten ( 10) days' prior written notice shall apply in the event of cancellation for nonpayment of premium.
c) Professional Liabilitv. CONSULTANT, at CONSULTANT' S own cost and expense, shall maintain for the period covered by this Agreement professional liability insurance for licensed professionals performing work pursuant to this Agreement in an amount not less than ($ 1, 000, 000) one million dollars per claim made and per policy aggregate covering the licensed professionals' negligent errors and omissions, as follows:
i) Any deductible or self- insured retention shall not exceed $ 150, 000 per claim.
ii) Notice of cancellation, must be received by the CITY at least thirty days prior to such change shall be included in the coverage or added as an endorsement to the policy.
iii) The following provisions shall apply if the professional liability coverages are written on a claims made form:

1. The retroactive date of the policy must be shown and must be before the date of the Agreement.

2. Insurance must be maintained and evidence of insurance must be provided for at least five years after completion of the Agreement or the work, so long as commercially
available at reasonable rates.

3. If coverage is canceled or not renewed and it is not replaced with another claims made policy form with a retroactive date that precedes the date of this Agreement, CONSULTANT
must provide extended reporting coverage for a minimum of three years after completion of the Agreement or the work.

The CITY shall have the right to exercise at the
CONSULTANT' S cost, any extended reporting provisions of the policy should the CONSULTANT cancel or not renew the coverage.

4. A copy of the claim reporting requirements must be submitted to the CITY prior to the commencement of any work under this Agreement.
d) Deductibles and Self- Insured Retentions. CONSULTANT shall disclose the self- insured retentions and deductibles before beginning any of the services or work called for by any term of this Agreement. During the period covered by this Agreement, upon express written authorization of the CITY' s authorized representative, CONSULTANT may increase such deductibles or self-insured retentions with respect to CITY, its officers, employees, agents, and volunteers.

CITY OF LATHROP— EKI ENVIRONMENT& WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 The CITY' s authorized representative may condition approval of an increase in deductible or self- insured retention levels upon a requirement that CONSULTANT procure a bond guaranteeing payment of losses and related investigations, claim administration, and defense expenses that is satisfactory in all respects to each of them. e) Notice of Reduction in Coveraqe. In the event that any coverage required under subsections ( a), ( b), or( c) of this section of the Agreement is reduced, limited, or materially affected in any other manner, CONSULTANT shall provide written notice to CITY at CONSULTANT'S earliest possible opportunity and in no case later than five days after CONSULTANT is notified of the change in coverage.
f) In addition to any other remedies CITY may have if CONSULTANT fails to provide or maintain any insurance policies or policy endorsements to the extent and within the time herein required, CITY may, at its sole option:
i) Obtain such insurance and deduct and retain the amount of the premiums for such insurance from any sums due under the Agreement;
ii) Order CONSULTANT to stop work under this Agreement or withhold any payment which becomes due to CONSULTANT hereunder, or both stop work and withhold any payment, until CONSULTANT demonstrates compliance with the requirements hereof;
iii) Terminate this Agreement.

Exercise of any of the above remedies, however, is an alternative to other remedies CITY may have and is not the exclusive remedy for CONSULTANT' S breach.
11) Indemnification - CONSULTANT' S Responsibilitv
Acceptance by CITY of the work performed under this Agreement does not operate as a release of said CONSULTANT from such professional responsibility for the work performed.

It is further understood and agreed that CONSULTANT is apprised of the scope of the work to be performed under this Agreement and CONSULTANT agrees that said work can and shall be performed in a fully competent manner in accordance with the standard of care applicable to CONSULTANT' S profession.

CONSULTANT shall indemnify, defend, and hold CITY, its officers, employees, agents, and volunteers harmless from and against any and all liability, claims, suits, actions, damages, and causes of action arising out of any personal injury, bodily injury, loss of life, or damage to property, or any violation of any federal, state, or municipal law or ordinance, to the extent caused by the willful misconduct or negligent acts or omissions of CONSULTANT, its employees, subcontractors, or agents, except for any such claim arising out of the negligence or willful misconduct of the CITY, its officers, employees, agents, or volunteers or any third parties for whom CONSULTANT is not legally liable. It is understood that the duty of CONSULTANT to indemnify and hold harmless includes the duty to defend as set forth in Section 2782. 8 of the California Civil Code.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 Notwithstanding anything to the contrary in this Agreement, the CONSULTANT shall have no duty to hire counsel to defend the CITY, but at the time of any settlement or adjudication of a matter the CONSULTANT shall pay as damages to CITY all reasonable attorney's fees and costs incurred by CITY to the extent caused by the willful misconduct or negligent acts or omissions ot CONSULTANT, its employees, subcontractors, or agents. Acceptance of insurance certificates and endorsements required under this Agreement does not relieve CONSULTANT from liability under this indemnification and hold harmless clause. This indemnification and hold harmless clause shall apply whether or not such insurance policies shall have been determined to be applicable to any of such damages or claims for damages. 12) Licenses
If a license of any kind, which term is intended to include evidence of registration, is required of CONSULTANT, its employees, agents, or subcontractors by federal or state law, CONSULTANT warrants that such license has been obtained, is valid and in good standing, and CONSULTANT shall keep it in effect at all times during the term of this Agreement, and that any applicable bond has been posted in accordance with all applicable laws and regulations.
13) Business Licenses
CONSULTANT shall obtain and maintain a CITY of Lathrop Business License until all Agreement services are rendered and accepted by the CITY. 14) Termination
Either CITY or CONSULTANT may cancel this Agreement upon 30 days written notification to the other party. Upon termination, or completion of services and payment of all amounts owed to CONSULTANT under this Agreement, all information collected, work product and documents shall be delivered by CONSULTANT to CITY within ten ( 10) calendar days. 15) Fundinq
CONSULTANT agrees and understands that renewal of this agreement in subsequent years is contingent upon action by the City Council consistent with the appropriations limits of Article XIII ( B) of the California Constitution and that the Council may determine not to fund this agreement in subsequent years.
16) Notices
All contracts, appointments, approvals, authorizations, claims, demands, Change Orders, consents, designations, notices, offers, requests and statements given by either party to the other shall be in writing and shall be sufficiently given and served upon the other party if( 1) personally served, ( 2) sent by the United States mail, postage prepaid, ( 3) sent by private express delivery service, or ( 4) in the case of a facsimile transmission, if sent to the telephone FAX number set forth below during regular business hours of the receiving party and followed with two ( 2) Days by delivery of a hard copy of the material sent by facsimile transmission. Personal service shall include, without limitation, service by delivery and service by facsimile transmission.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 To City: City of Lathrop
City Clerk
390 Towne Centre
Lathrop, CA 95330
Copy to: City of Lathrop
Department of Public Works
390 Towne Centre
Lathrop, CA 95330
MAIN: ( 209) 941- 7430
FAX: ( 209) 941- 7449
To Consultant: EKI Environment & Water
2001 Junipero Serra Blvd., Suite 300
Daly City, CA 94014
Phone: ( 650) 292- 9100
17) Miscellaneous
a) Consent. Whenever in this Agreement the approval or consent of a party is required, such approval or consent shall be in writing and shall be executed by a person having the express authority to grant such approval or consent. b) Contract Terms Prevail. All exhibits and this Agreement are intended to be construed as a single document. Should any inconsistency occur between the specific terms of this Agreement and attached exhibits, the terms of this Agreement shall prevail.
c) Controlling Law. The parties agree that this Agreement shall be governed and construed by and in accordance with the Laws of the State of California. d) Definitions. The definitions and terms are as defined in these specifications. e) Force Majeure. Neither party shall be deemed to be in default on account of any delay or failure to perform its obligations under this Agreement, which directly results from an Act of God or an act of a superior governmental authority. f) Headings. The paragraph headings are not a part of this Agreement and shall have no effect upon the construction or interpretation of any part of this Agreement. g) Incorporation of Documents. All documents constituting the Agreement documents described in Section 1 hereof and all documents which may, from time to time, be referred to in any duly executed amendment hereto are by such reference incorporated in the Agreement and shall be deemed to be part of this Agreement. h) Integration. This Agreement and any amendments hereto between the parties constitute the entire Agreement between the parties concerning the Project and Work, and there are no other prior oral or written agreements between the parties that are not incorporated in this Agreement.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 i) Modification of Agreement. This Agreement shall not be modified or be binding upon the parties unless such modification is agreed to in writing and signed by the parties. j) Ownership of Documents. All documents, photographs, reports, analyses, audits, computer media, or other material documents or data, and working papers, whether or not in final form, which have been obtained or prepared under this Agreement, shall, upon payment to CONSULTANT of all amounts owed under this Agreement, be deemed the property of the CITY. Upon CITY' s request, CONSULTANT shall allow CITY to inspect all such documents during the CONSULTANT' s regular business hours.
k) Provision. Any agreement, covenant, condition, clause, qualification, restriction, reservation, term or other stipulation in the Agreement shall define or otherwise control, establish or limit the performance required or permitted or to be required of or permitted by either party. All provisions, whether covenants or conditions, shall be deemed to be both covenants and conditions.

I) Severability. The invalidity in whole or part of any provision of this Agreement shall not void or affect the validity of any other provision of this agreement. If a court of competent jurisdiction finds or rules that any provision of this Agreement is void or unenforceable, the provisions of this Agreement not so affected shall remain in full force and effect.
m) Status of CONSULTANT. In the exercise of rights and obligations under this Agreement, CONSULTANT acts as an independent contractor and not as an agent or employee of CITY. CONSULTANT shall not be entitled to any rights and benefits accorded or accruing to the City Council members, officers or employees of CITY, and CONSULTANT expressly waives any and all claims to such right and benefits. n) Successors and Assigns. The provisions of this Agreement shall inure to the benefit of, and shall apply to and bind, the successors and assigns of the parties. o) Time of the Essence. Time is of the essence of this Agreement and each of its provisions. In the calculation of time hereunder, the time in which an act is to be performed shall be computed by excluding the first Day and including the last. If the time in which an act is to be performed falls on a Saturday, Sunday or any Day observed as a legal holiday by CITY, the time for performance shall be extended to the following Business Day.
p) Venue. In the event that suit is brought by either party hereunder, the parties agree that trial of such action shall be vested exclusively in the state courts of California in the County of San Joaquin or in the United States District Court for the Eastern District of California.
q) Recovery of Costs. The prevailing party in any action brought to enforce the terms of this Agreement or arising out of this Agreement may recover its reasonable costs, including reasonable attorney' s fees, incurred or expended in connection with such action against the non- prevailing party.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 r) Except as may be specifically allowed under this Agreement, nothing contained in this Agreement shall create a contractual relationship with, or a cause of action in favor of, a third party against either CITY or CONSULTANT. CONSULTANT' s Services hereunder are being performed solely for the benefit of CITY. s) In the event of any dispute between the parties arising under this Agreement, the parties shal first endeavor to settle such disputes through mediation. The parties shall bear their own attorney' s fees and costs but shall share equally in the cost of the mediator. If the parties are unable to settle the dispute through mediation, the dispute shall be settled by recourse to litigation.
18) Notice to Proceed
Prior to commencing work under this agreement, CONSULTANT shall receive a written Notice to Proceed" from CITY. A Notice to Proceed shall not be issued until all necessary bonds and insurances have been received. City shall not be obligated to pay CONSULTANT for any services prior to issuance of the Notice to Proceed. 19) Siqnatures
The individuals executing this Agreement represent and warrant that they have the right, power, legal capacity, and authority to enter into and to execute this Agreement on behalf of the respective legal entities of the CONSULTANT and the CITY. This agreement shall inure to the benefit of and be binding upon the parties hereto and their respective successors and assigns.

CITY OF LATHROP— EKI ENVIRONMENT & WATER, INC.

PROFESSIONAL CONSULTING SERVICES AGREEMENT TO PROVIDE INTEGRATED WATER RESOURCES MASTER PLAN AMENDMENT, CIP PW 22- 19 AND CIP WW 22- 24 Approved as to Form: City of Lathrop
City Attorney
Z--
Salvador Navarrete Date
Recommended for Approval: City of Lathrop
Public Works Director
Michael King Date
Approved by: City of Lathrop
390 Towne Centre Drive
Lathrop, CA 95330
Stephen J. Salvatore Date
City Manager
Consultant: EKI Environment & Water, Inc.
2001 Junipero Serra Blvd, Suite 300
Daly City, CA 94014
Fed I D # 94- 3087395
Business License # 20137
Signature Date
Print Name and Title

EXHIBIT A
Q environment
c & water
Corporate Office
2001 Junipero Serra Boulevard, Suite 300
Daly City, CA 94014
650) 292- 9100
ekiconsult. com
25 February 2022
Greg Gibson
Senior Civil Engineer
City of Lathrop— Public Works Department
390 Towne Centre Drive
Lathrop, CA 95330
Subject: Proposal for Water System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment
City of Lathrop, California
EKI CO- 161)
Dear Mr. Gibson,
EKI Environment& Water, Inc. ( EKI) is pleased to submit this proposal for consulting services to assist the City of Lathrop ( City) with preparation of an amendment to its 2019 Water System Master Plan ( WSMP) as part of a comprehensive amendment to the City' s 2019 Integrated Water Resources Master Plan IWRMP).

Project Unders#anding and Background
EKI understands that the City is interested in completing a comprehensive amendment to the IWRMP.

The existing IWRMP, which includes the City' s Water System Master Plan, Wastewater System Master Plan, and Recycled Water System Master Plan, was completed by EKI in December 2018 and approved by the City Council in December 2019 after a California Environmental Quality Act ( CEQA) process. 1 Since the IWRMP was completed, new information has become available and certain planning assumptions have changed that require an amendment to the IWRMP, including the following:

Water Demand Information: EKI updated the City' s unit water demand factors and water demand projections in July 2020 to support the River Islands Phase 2 development Water Supply Assessment, which were later incorporated into the City' s 2020 Urban Water Management Plan UWMP). The updated demand evaluation was based on the City' s water use patterns observed since the 2014- 2017 drought and updated development projections, which have changed most significantly in the River Islands development area. The updated analysis projected a significantly lower future water demand compared to the IWRMP, which had been based on the City' s predrought water use patterns. The amended IWRMP will need to incorporate these updated water 1 Final Council- approved IWRMP is dated December 2019, but content is consistent with December 2018 Draft IWRMP. Existing WSMP is referred to as the 2019 WSMP, herein.

Davis, CA• Marin, CA• Oakland, CA• Roseville, CA• Irvine, CA Centennial, CO• Glastonbury, CT• Holyoke, MA• Saratoga Springs, NY City of Lathrop ( EKI CO- 161) environment
25 February 2022 ej I & water

use factors and water demand estimates. In addition, ongoing legislation of the supplier annual water use objectives may further reduce the City' s projected water demand. The Department of Water Resources ( DWR) and the State Water Resources Control Board ( SWRCB) submitted a report in November 2021 recommending the indoor water use efficiency standards to be reduced to 42 gallons by 2030 and beyond. The amended IWRMP will assess the implication of the ongoing legislation on the City' s projected water demand.

Water Supply Information: The City' s water supply reliability and water supply infrastructure investments need to be reassessed based on the updated demand projections and the updated water supply projections presented in the 2020 UWMP and any subsequent updates related to the projected South County Water Supply Project ( SCWSP) reliability. For example, the City' s imported surface water from the SCWSP could experience significant future cutbacks in light of the Bay Delta Plan Amendment and the resolution of resultant Settlement Negotiations. Further, in recent years, the City has experienced water quality issues with its groundwater supply associated with the nearby former Occidental Chemical Corporation remediation site and detections of and new regulations associated with per- and polyfluoroalkyl substances ( PFAS).

These issues limit the City' s ability to expand groundwater production in the future. EKI understands that the City is currently evaluating adding PFAS treatment to the Louise Avenue Water Treatment Facility ( LAWTF) and an aquifer storage and recovery (ASR) project to improve water supply reliability. The amended IWRMP will incorporate findings from these evaluations.

New Development Facility Plans: The Lathrop City Council approved the modified River Islands Phase 2 project on June 14, 2021. The project includes land uses changes for new development in the River Islands development area and expansion of the City' s distribution system. The project' s master planning documents ( i. e., potable water, non- potable water, and wastewater facility technical reports) were completed in November 2020. The amended IWRMP will need to incorporate water demands and associated infrastructure for planned new development and evaluate their impacts on the overall system.

General Plan Update: The City has initiated a General Plan Update and filed a Notice of Preparation for the Environmental Impact Report in October 2021. The City anticipates completing the General Plan Update in 2022. EKI will update the growth projections in the amended IWRMP to be consistent with those included in the General Plan Update.

River Discharge Permit and Recycled Water Deliveries: The City has obtained a River Discharge Permit to dispose a portion of the wastewater treated at the Lathrop Consolidated Treatment Facility( CTF) in the San Joaquin River and deliver the remaining recycled waterto retail customers.

To support use of recycled water for landscape irrigation, the City obtained coverage under General Order WQ-2019-0058- DDW- R5017 and submitted a Title 22 Report Addendum in 2020.

The City began delivering recycled water for urban uses in the summer of 2021. These changes affect the operations and infrastructure needed for the City' s wastewater effluent disposal and recycled water distribution systems. Evaluations completed to support these efforts need to be incorporated into the amended IWRMP.

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As part of the tWRMP amendment, EKI will also update and recalibrate the City' s water, wastewater, and recycled water hydraulic models to incorporate recent infrastructure improvements and system expansions, updated demand and flow projections, and current operational strategies. Based on updated hydraulic and supply evaluations, EKI will amend the City' s capitai improvement program ( CIP) for each system. EKI will also update the existing tracking tool database to track available water supply, wastewater treatment, and wastewater disposal capacity for each developer.

Proposed Scope of Work
EKI proposes the following tasks as part of this scope of work to amend the City' s 2019 WSMP as part of a comprehensive amendment to the City' s 2019 IWRMP.

Task 1 - Project Management and Coordination
EKI wili provide project management and general consultation services to the City. This task includes coordination and communications with City staff, general consultation, and technical project management services. Frequent and clear communication with the City throughout the development of the WSMP update will be important to ensure that the plan meets the City' s expectations and stays on schedule. Specific tasks include:

Information Mana ement: Specific information wil be required for amending the WSMP. EKI will prepare a list of information requests and submit the list to City staff. EKI will compile and review information. Information requests are expected to include:
o Current and projected land use information that reflects new development and the proposed General Plan Update;
o Current screenshots of Supervisory Control and Data Acquisition (SCADA) system HumanMachine Interface ( HMI) showing operational setpoints for each water system facility; o SCAOA historian data in 5- minute polling intervals or less for pump station flow and suction and discharge pressures, tank levels, and other available flow meters since 2017; o Record drawings or AutoCAD drawings for water system improvements completed since 2018 or design drawings for projects currently under construction; o Updated water system geodatabase that incorporates all of the improvements completed since 2018;
o Recent water system utility planning documents for new development; o Complete set of billing records since January 2020; and, o Advanced metering infrastructure ( AMI) data, if available, showing hourly water use for peak users.

This information request will be coordinated with the information needed for the Wastewater System Master Plan ( WWSMP), Recycled Water System Master Plan ( RWSMP), and the Sanitary System Management Plan ( SSMP).

Kickoff Meeting: At the kick- off ineeting, EKI and City staff will discuss project goals, opportunities, constraints, information needs, roles, responsibilities, the schedule, and expectations. As part of the meeting, EKI and City staff will review and document new information since the 2019 IWRMP, including major infrastructure improvements, planning assumptions, City of Lathrop ( EKI CO- 161) environment
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supply estimates, and demand estimates. The team will assess impacts of the new information on master planning, revisit planning horizons, and identify key analyses to be conducted as part of the IWRMP update and potential alternatives. EKI assumes this kickoff ineeting will be combined with the kickoff ineeting for the WWSMP and RWSMP amendments.

Workshops/ Pro ress Meetin s: EKI will schedule and attend up to three ( 3) workshops or progress meetings with City staff and other stakeholders to review project status, preliminary results, and to solicit feedback for key project decisions. For all meetings, we will be responsible for preparing and distributing meeting notices, agendas, and minutes. EKI assumes these progress meetings will be combined with meetings forthe WWSMP and RWSMP amendments.

Project Schedule: We will prepare the project critical path schedule and will provide the City schedule updates as needed.

Project Communications and Proiect Mana ement Tasks: We will perform other project management tasks including as- needed communications and general consulting services, budget tracking, and invoicing. We will provide a budget and progress summary reports to the City with each invoice.

Deliverables:

Information request log.

Meeting agendas, presentations, and minutes.

Monthly budget and progress summary reports.

Key assumptions:

The initial data request will be combined with the requests forthe WWSMP and RWSMP.

Kickoff and progress meetings will be held remotely over video conference and will be combined with meetings forthe WWSMP and RWSMP.

Tasks repuired by Citystaff: Fulfill data requests in accordance with schedule expectations and participate in meetings.

Task 2 - Hydraulic Model Construction and System Description Updates In this task, EKI will update the City' s hydraulic model construction and update the description of the existing system included in Section 3 of the 2019 WSMP. EKI will perform the following subtasks:

Update the water system hydraulic model network to incorporate system improvements completed since the IWRMP orthose currently in design or construction.

Update the existing water system hydraulic model network to incorporate system expansions related to new development since the IWRMP, including verifying elevations in these areas based on publicly available data.

Update the backbone water system infrastructure included in the future hydraulic model for future development areas based on recent utility plans completed by Developers ( e. g., the Novemeber 2020 River Islands facility technical reports).

Verify operational settings with City operations staff and update settings in the hydraulic model for all pumps and tanks.

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Update the existing system description included in Section 3 of the 2019 WSMP.

Deliverables:

Updated water system geodatabase exported from the updated hydraulic model.

Draft of revised existing system description (Section 3) from the IWRMP including tables of facility data attribute information and figures.

Kev assumptions:

City will provide the updated geodatabase for the current distribution system and all as- built records for recent and current improvements in AutoCAD or PDF format.

City will provide current operational strategies and setpoints via SCADA HMI exports and operational staff will be available to answer questions.

Tasks required bv Citv staff: Provide relevant GIS data and as- built records and verify operational set points.

Task 3- Peaking Factor and Diurnal Paltern Evaluation, Model Demand Reallocations, and Tracking Tool Update
This task will update the demands and peaking factors used in the model and update the relevant sections in the 2019 WSMP report. EKI will perform the following subtasks:

Reallocate parcel- by- parcel average day demands (ADD) in the model based on updated demand evaluation and geocode and allocate demands associated with new development added since the prior hydraulic model update.

Update parcel- level water use data in tracking tool database.

Reallocate near- term future, long- term future, and buildout ADD to the future hydraulic models based on the updated demand evaluation.

Evaluate updated maximum day demand ( MDD) and peak hour demand ( PHD) peaking factors and diurnal curves based on recent SCADA data using a mass balance approach by tallying all inflow, outflow, and change in storage.

Evaluate site- specific peaking factors and diurnal curves for the largest water users based on AMI data, if available.

Create modeling demand sets for existing, near- term, future, and buildout ADD, MDD, and PHD conditions.

Assign fire flow demands to each new fire hydrant based on associated land use.

Update the Study and Water Service Area ( Section 2) and Existing and Future Water Demands Section 4) sections from the 2019 WSMP based on the demand evaluation completed by EKI in July 2020 to support the River Islands Phase 2 development Water Supply Assessment and materials prepared for the 2020 UWMP.

Deliverables:

Updated tracking tool database with updated parcel- level water use data.

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Draft of revised Study and Water Service Area( Section 2) and Existing and Future Water Demands Section 4) from the 2019 WSMP including all tables and figures.

Key assumptions:

The Tracking Tool database updates will be prepared in conjunction with efforts included in the scopes of work for the RWSMP and WWSMP amendments.

SCADA data is available in less than 10- minute intervals for each pump station and tank.

Tasks required bv City staff: Provide SCADA data and review draft deliverables.

Task 4 - Steady- State Model Validation and Cdlibration After model updates, EKI will validate the model, assist the City to perform fire flow calibration testing, and perform steady- state calibrations. EKI will perform the following subtasks:

Perform validation model runs to ensure connectivity and model convergence.

Develop a calibration hydrant test plan assuming approximately 10 test locations. The test plan will include procedures, test forms, and maps for each test location that shows the planned flow hydrant, residual test hydrants, and any valves that will need to be cfosed to perform roughness tests.

Review the plan with City operations staff and assist the City operations staff to perform the calibration hydrant tests in the field.

Create steady- state model scenarios for each test and set boundary conditions ( e. g., pump statuses) based on SCADA historian data from the test period.

Compare the modeled and observed hydraulic grade lines ( HGLs) to determine calibration confidence for each test.

If discrepancies are found, troubleshoot the cause of the differences and adjust parameters to bring the difference in values closer.

Prepare tables that show the steady- state calibration results and update Appendix C from the 2019 WSMP.

Deliverables:

Hydrant Test Plan.

Test data sheets.

Draft of updated Appendix C from the WSMP with tables summarizing the calibration resu ts.

Key assumptions:

Calibration testing will include up to 10 test locations and be performed over two days.

EKI will provide calibrated hydrant water pressure loggers.

Other equipment provided by City staff including pitot tube will be properly calibrated.

No retesting will be required.

Tasks required bv Citv staff:

Meet with EKI to review the hydrant testing plan.

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Inspect all test hydrants and exercise all valves used during the testing prior to the date of the test.

Provide calibrated test equipment including pitot tube.

Perform field testing( assumed two days) with assistance from EKI.

Provide SCADA historian data from the test period.

Review draft deliverables.

Task 5 - Modeling Analysis to Evaluate System Performance Following model calibration, EKI will utilize the updated model to evaluate the capacity of the overall water system under existing and future demand conditions under PHD and MDD plus fire flow conditions.

EKI will compare results with the updated hydraulic model to those presented in the IWRMP and determine whether the results affect any of the improvement projects presented in the IWRMP. To address any newly identified deficiencies, EKI will develop and model potential water system improvements and/ or operational changes. EKI will prepare figures showing modeling results for the existing, near-term, future, and buildout scenarios and the proposed improvements, highlighting any changes from the IWRMP. EKI will update Sections 6 and 7 of the 2019 WSMP based on the results of the analysis.

Deliverables: Drafts of updated Water System Performance and Operations Criteria ( Section 6) and Distribution System Hydraulic Capacity Evaluation( Section 7) of the 2019 WSMP, including updated tables and figures.

Kev assumptions: EKI assumes that the performance criteria established in Section 6 of the 2019 WSMP will not change except for the peaking factors.

Tasks required bv City staff: Review draft deliverables.

Task 6 - Water Supply Facilities and Storage and Pumping Capacity Evaluation Based on updated demand projections and supply reliability evaluations completed for the 2020 UWMP, as well as assumed impacts of implementation the Bay Delta Plan ( e. g., scenario included in 2020 UWMP Appendix H), EKI will evaluate the need for new water supply infrastructure, including new groundwater supply wells and treatment. This evaluation will incorporate and build upon findings from the City' s evaluations of ASR and adding PFAS treatment to the LAWTF.

EKI will also evaluate the capacity of storage and pumping facilities based on established performance criteria. EKI will work with the City to determine whether the storage and pumping capacity criteria should be updated to account for potential emergency situations ( e. g., SSJID supply disruptions as the result of Public Safety Power Shutoffs [ PSPS]). EKI will compare existing available capacities against current and projected capacity requirements, based on the established performance criteria and the existing and projected demands, and identify whether storage and/ or pumping capacity is needed.

EKI wil) update the Water System Supplies ( Section 5) and the Water Supply, Storage, and Pumping Capacity Evaluation ( Section 8) sections of the 2019 WSMP.

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Deliverables: Draft of updated Water System Supplies ( Sections 5) and Water Supply, Storage, and Pumping Capacity Evaluation( Section 8) sections ofthe 2019 WSMP, including updated tables and figures.

Kev assumptions: EKI will rely on the analysis supply reliability analysis prepared for the 2020 UWMP to update Section 5 of the 2019 WSMP.

Tasks required bv City staff:

Work with EKI to confirm performance requirements.
review draft deliverables.

Task 7 - Water System Master Plan Amendment
Based on the evaluations performed as part of Tasks 5 and 6, EKI will develop a revised recommended CIP. EKI will update cost factors based on the current construction market and update opinions of probable cost for each project. EKI will work with the City to develop criteria for prioritizing these projects and will establish project priorities based on this criteria. EKI will submit a draft of the updated Recommended Capital Improvement Program ( Section 9) from the 2019 WSMP.

After City review of each draft WSMP section prepared in Tasks 2 through 7, EKI will revise and compile each of the sections and prepare a complete draft WSMP amendment for review by the City and key stakeholders. EKI will submit a final WSMP amendment that incorporates the City' s and otherstakeholder comments.

Deliverables:

Draft of updated Recommended Capita) Improvement Program ( Sections 9) section of the 2019 WSMP.

Draft and Final WSMP amendment ( 2 electronic copies [ PDF and Word versions)) Key assumptions:

Comments from City and stakeholder on Draft WSMP will be minor and will not require additional technical analysis.

EKI assumes that a programmatic EIR is not required but can assist in preparation of the programmatic EIR as part of a separate work authorization.

Tasks required bv City staff: Review draft Section 9 and the Draft WSMP Amendment.

Optional Task 8 - Extended Period Simulation Calibration and Analysis As discussed above, the City' s existing hydraulic model is only a steady- state model, which is an appropriate tool for master planning. A steady- state modeling run shows how the system responds to a single, instantaneous demand and operational condition, but does not indicate how a system will operate continuously over an extended period. An extended period simulation( EPS) model is needed to show how tanks will fill and drain and how pressures and velocities will fluctuate depending on tank levels, pump operations, and diurnal demand patterns. An EPS model is needed to model water age, movement, and quality within the system and is best suited to support operational decisions.

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As an optional task, EKI will perform an EPS calibration. The EPS calibration will compare trends in flows, pressure, and water levels in the model outputs to real- world data collected in the City' s supervisory control and data acquisition ( SCADA) system confirm that the controls are modeled correctly. EKI proposes to calibrate to three separate demand days using available data from the previous year: ( 1) a minimum demand day model, ( 2) an average demand day model, and ( 3) a maximum day demand model.

A 48- hour period could be used if certain operating conditions ( e. g., tank cycling) repeat over a longer period than 24- hours.

EKI will use the SCADA data to compare model outputs and set initial conditions in the model. EKI may use time- of- day controls for certain pumps if it is apparent that they were operated manually and do not follow normal automated control sequences. Modeled and observed tank levels, pressures, and flows will be compared to assess calibration. EKI will troubleshoot discrepancies and make appropriate adjustments.

To assess the calibration, EKI will calculate the Average Mean Error ( AME) for each site based on subtracting the model results for a given time from the measured value corresponding to that time and then taking the average of these differences over all time steps for each date. EKI assumes one conference call will be conducted to review the calibration results.

Deliverables: ( 1) Calibration summary charts and ( 2) draft and final TM summarizing calibration effort that will be appended to the WSMP amendment.

Kev assumptions: Additional analyses beyond calibration ( e. g., water age or alternative operational scenarios) are not included but can be performed as part of a separate scope of work.

Tasks required bv Citv staff: Participate in conference call and review draft TM.

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Project Schedule
EKI is available to initiate work upon receiving authorization from the City. A general schedule for Tasks 1 through 7 and Optional Task 8 is presented below.

Task 1- Proiect Mana ement and Coordination j`` `
Task 2- Hydraulic Model Construction and Svstem
Description Updates
Task 3- PeakinQ Factor and Diurnal Pattern
Evaluation. Modei Demand Reallocations and
Trackin Tool Update
Task 4— Steady- State Model Validataion and
Calibration
Task 5— ModelinQ AnaiVsis to Evaluate SVstem
Performance
Task 6- Water Supply Facilities and Stora e and
Pumping Capacitv Evaluation
Task 7- Water Svstem Master Plan Amendment
Draft Section 9( CIPJ
Draft Master P/ an Report
Final Master Plan Report
Optional Task 8- Extended Period Simulation
Calibration and Analvsis
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Compensation for Consulting Services
We propose that compensation for consulting services by EKI be on a time and expense reimbursement basis per our attached current Schedule of Charges, dated 2 January 2022. Based on the proposed Scope of Work described above, our estimated not-to- exceed budget is $ 148, 000 for the base scope Tasks 1 through 7 and an additional$ 22, 500 for Optional Task 8, as follows by task:

Task 1- Project Management and Communications 11, 500
Task 2- Hydraulic Model Construction and System Description Updates 19, 300 Task 3- Peaking Factor and Diurnal Pattern Evaluation and Model Demand Reallocations
16, 500
Task 4- Steady- State Model Validation and Calibration 31, 000 Task 5- Modeling Analysis to Evaluate System Performance 15, 500 Task 6— Water Supply Facilities and Storage and Pumping Capacity Evaluation 23, 000 Task 7— Water System Master Plan Amendment 31, 200
t
Optional Task 8- Extended Period Simulation Calibration and Analysis 22, 500 A detailed budget table is included in Attachment A.

Terms and Conditions
Other than the scope of work, budget, and schedule herein, the work will be performed per the terms and conditions established in our current agreement with the City of Lathrop 13 July 2020.

Thank you for the opportunity to work with the City on this project. Please contact Jonathan Sutter at 650- 292- 9099 orjsutter@ekiconsult. com with any questions.

Very truly yours,
EKI ENVIRONMENT& WATER, INC.

Gf i ra
Anona Dutton, PG, CHg nathan Sutter, PE
Vice President Project Manager
Attachments:

A. Budget Estimate for Proposed Scope of Work
B. EKI Schedule of Charges, dated 2 January 2022
Attachment A- Budget Estimate for Proposed Scope of Work Water System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment City of Lathrop, California
EKILabor Ezpenses TOTAL( 3J
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133 145 185 230 276 296 307 ($)
ask 1- Pro' ect Mana ement and Coordination
Prepare, Review, and Document Requests for Information 4 2 1 1, 535 1, 535 Kickoff Meeting 2 2 1 $ 1, 372 1, 372
Participate in three( 3) progress meetings/ workshops 12 6 6 5, 466 5, 466 Prepare and periodically update project schedule 2 1 624 624 Other communications and project management tasks 8 2 2, 488 2, 488 Su6total 0 0 18 19 11 0 1 $ 13, 485 $ 0 $ 11, 500
ask 2- H draulic Model Construction and 5 stem Descri tion U dates Update hydraulic model for recent system improvements 20 4 1 5, 092 5, 092 Update hydraulic model for recent development expansions 20 4 1 5, 092 5, 092 Update hydraulic model for updated development backbone infrastructure plans 16 2 1 3, 844 3, 844 Verify and update operational settings 4 1 1 1, 296 1, 296 Prepare dreft update to Section 3 of WSMP 4 8 q 2 1 3, 943 $ 80 $ 4, 023 Subtotal 4 0 68 IS 6 0 1 $ 19, 2b6 $ 80 $ 19, 300
ask 3- Peakin Factor and Diurnal Pattern Evaluation and Model Demand Reallocations Reallocate parcel- level demands in model 2 8 4 1 3, 060 $ 40 $ 3, 100 Update parcel- level water use data in tracking tool database 12 2 2, 787 2, 7g7 Reallocate future demands for near- term, long- term, and buildout future scenarios 6 2 1 1, 920 1, 920 Evaluate updated peaking factors and diurnal curves 12 2 1 3, 074 3, 074 Create modeling peak demand sets for each scenario 4 1 1, 009 1, 009 Assign fire flow demands to new fire hyrants in model 2 1 624 624 Prepare draft update to Section 2 and Section 4 of WSMP 4 8 4 2 1 $ 3, 943 3, 943 Subtotal 6 . 0 52 16 5 0 1 $ 16, 416 $ 40 $ 16, 500
Task 4- Stead - State Model Validation and Calibretion
Perform model validation runs 4 2 1, 248 1, 248
Develop and Review with District Calibration Field Test Plan 10 2 20 4 2 7, 064 $ 200 $ 7, 264 Assist District perform field testing 20 24 2 1 8, 399 $ 750 $ 9, 149 Perform steady- state model calibration 36 8 4 9, 988 59, 988 Prepare TM and tables that show the steady- state calibration results 8 4 2 1 $ 3, 389 3, 389 Subtotal 30 22 92 20 9 0 1 $ 30,088 $ 950 $ 31, OD0
ask 5- Modelin Anal sis to Evaluate 5 stem Performance
Perform steady- state hydraulic modeling analysis to identify deficiencies 12 4 2 3, 840 3, 840 Compare results against IWRMP and evaluate proposed system improvements 12 6 2 4, 318 4, 318 Prepare draft update to Section 6 and Section 7 of WSMP 16 12 4 4 1 $ 6, 946 $ 320 $ 7, 266 Subtotal " 16 0 36 14 8 0 1 $ 15, 104 $ 35D $ 15, 500
Task 6- Water Su I Facilities and Stora e and Pum in Ca acit Evaluation Evaluate the need for new water supply infrastructure/ sources 24 12 S 6 1 $ 11, 951 11, 951 Prepare updated storage evaluation 8 2 1 2, 305 2, 305
Prepare updated pumping/ supply evaluation 8 2 1 2, 305 2, 305 Prepare draft update to Section 5 and Section 8 of WSMP 4 12 6 4 2 1 $ 6, 380 $ 80 $ 6,460 Subtotal 4 0 52 22 14 8 2 $ 22, 940 $ 80 $ 23, 000
Task 7- Water S stem Master Plan Amendment
Develop updated costfactorsand opinions ofprobablecosts 20 4 8 7, 101 7, 101 Develop project prioritization strategy and prioritize identified projects 6 4 1 2, 398 2, 398 Prepare Draft Section 9 from WSMP 16 16 4 2 6, 822 $ 320 $ 7, 462 Prepare Draft Master Plan Report 8 16 8 6 1 $ 8, 140 $ 410 8, 710 Prepare Final Master Plan Report S 12 4 2 4, 946 $ 410 $ 5, 516 Subtotal 32 0 70 24 19 0 1 $ 29, 408 $ 1, 140 $ 31, 200 BASE TOTAL( TASK51- 7): 72 22 388 13D 72 8 8 $ 144, 708 $ 2, 640 $ 148, 000 February 2022
CO- 161) Page 1 of 2 EKI Environment& Water, Inc.

Attachment A- Budget Estimate for Proposed Scope of Work Water System Master Plan Amendment, 2022 Integreted Water Resources Master Plan Amendment City of athrop, California
EKILabor Expenses TOTAL( 3)
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133 145 185 230 276 296 307 ($)
O tional Task 8- Extended Period Simulation Calibration and Anal sis Set calibration diurna/ potterns, initia/ settings, ond campile SCADA data 12 6 2 4, 318 4, 318 Perform EPS Calibration 48 12 4 13,254 13, 254
Prepare calibration chorts and TM 16 4 2 1 $ 4, 929 4,929 subrotai o o 6 ZZ a o . t 52z; soo So $ zz soo
Notes:
1) A communications charge of 4% of labor costs covers e- mail access, web conferencing, cellphone calls, messaging and data access, file sharing, local and long distance telephone calls and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying. 2) " Other Direct Costs" includes direct expenses, as listed below, inturred in connection with the work and will be reimbursed at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reproductions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and contractors. c. Rented vehicles, local public transportation and taxis, travel and subsistence. d. Special fees, insurance, permits, and licenses applicable to the work. e. Outside computer processing, computation, and proprietary programs purchased for the work 3) Task subtotals rounded to the nearest hundred dollars.

February 2022
CO- 161) Page 2 of 2 EKI Environment& Water, Inc.

Client/Address: City of Lathrop
390 Towne Centre Drive, eki
environment
Lathrop, CA 95330 water
Proposal/ Agreement Date: 25 February 2022 EKI Proposal/ Project# CO- 161 SCHEDULE OF CHARGES FOR EKI ENVIRONMENT& WATER. INC. 2 January 2022 Personnel Classification Hourlv Rate
Officer and Chief Engineer- Scientist 307
Principal Engineer- Scientist 296
Supervising I, Engineer- Scientist 286
Supervising II, Engineer- Scientist 276
Senior I, Engineer- Scientist 265
Senior II, Engineer- Scientist 255
Associate I, Engineer- Scientist 244
Associate II, Engineer- Scientist 230
Engineer- Scientist, Grade 1 214
Engineer- Scientist, Grade 2 202
Engineer- Scientist, Grade 3 185
Engineer- Scientist, Grade 4 165
Engineer- Scientist, Grade 5 145
Engineer- Scientist, Grade 6 128
Project Assistant 130
Technician 116
Senior GIS/ Database Analyst 150
CADD Operator/ GIS Analyst 133
Senior Administrative Assistant 147
Administrative Assistant 115
Secretary 96
Direct Expenses
Reimbursement for direct expenses, as listed below, incurred in connection with the work will be at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reproductions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and contractors. c. Rented vehicles, local public transportation and taxis, travel, and subsistence. d. Special fees, insurance, permits, and licenses applicable to the work. e. Outside computer processing, computation, and proprietary programs purchased for the work.

A Communication charge for e- mail access, web conferencing, cellphone calls, messaging and data access, file sharing, local and long distance telephone calls and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying will be charged at a rate of 4% of labor charges. Large volume copying of project documents, e. g., bound reports for distribution or project- specific reference files, will be charged as a project expense as described above.

Reimbursement for company- owned automobiles, except trucks and four- wheel drive vehicles, used in connection with the work will be at the rate of sixty cents($ 0. 60) per mile. The rate for company- owned trucks and four-wheel drive vehicles will be seventy- five cents($ 0. 75) per mile. There will be an additional charge of thirty dollars ($ 30. 00) per day for vehicles used for field work. Reimbursement for use of personal vehicles will be at the federally allowed rate plus fifteen percent( 15%).

CADD Computer time will be charged at twenty dollars($ 20. 00) per hour. In- house material and equipment charges will be in accordance with the current rate schedule or special quotation. Excise taxes, if any, will be added as a direct expense.

Rate for professional staff for legal proceedings or as expert witnesses will be at a rate of one and one- half times the Hourly Rates specified above.

The foregoing Schedule of Charges is incorporated into the Agreement for the Services of EKI Environment& Water, Inc. and may be updated annually.

EXHIBIT B
environment
water
Corporate Office
2001 Junipero Serra Boulevard, Suite 300
Daly City, CA 94014
650) 292- 9100
ekiconsult.com
25 February 2022
Greg Gibson
Senior Civil Engineer
City of Lathrop— Public Works Department
390 Towne Centre Drive
Lathrop, CA 95330
Subject: Proposal for Recycled Water System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment
City of Lathrop, California
EKI CO- 161)
Dear Mr. Gibson,
EKI Environment& Water, Inc. ( EKI) is pleased to submit this proposal for consulting services to assist the City of Lathrop( City) prepare an amendment to its 2019 Recycled Water System Master Plan ( RWSMP) as part of a comprehensive amendment to the City' s 2019 Integrated Water Resources Master Plan IWRMP).

Project Understanding and Background
EKI understands that the City is interested in completing a comprehensive amendment to the IWRMP, concurrently with the preparation of the City' s 2020 Urban Water Management Plan ( UWMP). The existing IWRMP, which includes the City' s Water System Master Plan, Wastewater System Master Plan, and Recycled Water System Master Plan, was completed by EKI in December 2018 and approved by the City Council in December 2019 after a California Environmental Quality Act ( CEQA) process. l
Since the IWRMP was completed, new information has become available and certain planning assumptions have changed that require an amendment to the IWRMP, including the following:

Water Demand Information: EKI performed an update to the City' s unit water demand factors and water demand projections in July 2020 to support the River Islands Phase 2 development Water Supply Assessment. The updated demand evaluation was based on the City' s water use patterns observed since the 2014- 2017 drought and updated development projections, which have changed most significantly in the River Islands development area. The updated analysis projected a significantly lower future water demand compared to the IWRMP, which was based on the City' s pre- drought water use patterns. These updates also affect the assumed landscape 1 Final Council- approved IWRMP is dated December 2019, but content is consistent with December 2018 Draft IWRMP. Existing RWSMP is referred to as the 2019 RWSMP, herein.

Davis, CA• Marin, CA• Oakland, CA• Roseville, CA• Irvine, CA Cenfennial, CO• Glastonbury, CT• Holyoke, MA• Saratoga Springs, NY City of Lathrop( EKI CO- 161) environment
25 February 2022
j I & water

irrigation recycled water demands. In addition, ongoing legislation of the supplier annual water use objectives may further reduce the City' s projected water demand. The Department of Water Resources ( DWR) and the State Water Resources Control Board ( SWRCB) submitted a report in November 2021 recommending the indoor water use efficiency standards to be reduced to 42 gallons by 2030 and beyond. The amended IWRMP will assess the implication of the ongoing legislation on the City' s projected water demand.

New Development Facility Plans: The Lathrop City Council approved the modified River Islands Phase 2 project on June 14, 2021. The project includes land uses changes for new development in the River Islands development area and expansion of the City' s distribution system. The project' s master planning documents including potable water, non- potable water, and wastewater facility technica) reports were completed in November 2020. The amended IWRMP wi l need to incorporate water demands and associated infrastructure for planned new development and evaluate their impacts on the overall system.

General Plan Update: The City has initiated a General Plan Update and filed a Notice of Preparation for the Environmental Impact Report in October 2021. The City anticipates completing the General Plan Update in 2022. The growth projections in amended IWRMP will be consistent with those included in the General Plan Update.

River Discharge Permit and Recycled Water Deliveries: The City has obtained a River Discharge Permit to dispose a portion of the wastewater treated at the Lathrop Consolidated Treatment Facility( CTF) in the San Joaquin River and deliverthe remaining recycled water to retail customers.

To support use of recycled water for landscape irrigation, the City obtained coverage under General Order WQ- 2019- 0058- DDW- R5017 and submitted a Title 22 Report Addendum in 2020.

The City began delivering recycled water for urban uses in the summer of 2021. These changes affect the operations and infrastructure needed for the City' s wastewater effluent disposal and recycled water distribution systems. Evaluations completed to support these efforts need to be incorporated into the amended IWRMP.

As part of the IWRMP amendment, EKI will also update and recalibrate the City' s water, wastewater, and recycled water hydraulic models to incorporate recent infrastructure improvements and system expansions, updated demand and flow projections, and current operational strategies. In the 2019 RWSMP, hydraulic modeling analyses were only completed through the buildout of the current expansion of the Lathrop Consolidated Treatment Facility (CTF) and did not look at long-term future scenarios due to the uncertainty related to future uses of recycled water and effluent disposal. The RWSMP will include a hydraulic analysis of a future buildout scenario based on the assumption that the City will be granted a River Discharge Permit to dispose of excess treated wastewater effluent.

Based on updated hydraulic evaluations, EKI will amend the City' s capital improvement program ( CIP) for each system. EKI will also update the existing tracking tool database to track available water supply, wastewater treatment, and wastewater disposal capacity for each developer.

City of Lathrop ( EKI CO- 161) environment
25 February 2022 Pj I & water

Proposed Scope of Work
EKI proposes the following tasks as part of this scope of work to amend the City' s 2019 RWSMP as part of a comprehensive amendment to the City' s 2019 IWRMP.

Task 1 - Project Management and Coordination
EKI will provide project management and general consultation services to the City. This task includes coordination and communications with City staff, general consultation, and technical project management services. Frequent and clear communication with the City throughout the development of the RWSMP update will be important to ensure that the plan meets the City' s expectations and stays on schedule. Specific tasks include:

Information Mana ement: Specific information will be required for amending the RWSMP. EKI will prepare a list of information requests and submit the list to City staff. EKI will compile and review information. Information requests are expected to include:
o Current and projected land use information that reflects new development and the proposed General Plan Update;
o Current screenshots of Supervisory Control and Data Acquisition ( SCADA) system HumanMachine Interface ( HMI) showing operational setpoints for each recycled water system facility;
o SCADA historian data in 5- minute polling intervals or less for available pump station flow and suction and discharge pressures, pond levels, and other available flow meters since 2017;
o Metered landscape irrigation consumption data and land application area delivery data; o Current design and planning documents associated with the River Discharge effluent disposal system;
o Record drawings or AutoCAD drawings for recycled water system improvements completed since 2018 or design drawings for projects currently in design or under construction;
o Updated geodatabase for the recycled water system infrastructure that incorporates new infrastructure added in River Islands and other new developments since the last model update; and,
o Recent water system utility planning documents for new development.

This information request will be coordinated with the information needed for the Wastewater System Master Plan ( WWSMP), the Water System Master Plan ( WSMP).

Kickoff Meetin: At the kick- off ineeting, EKI and City staff will discuss project goals, opportunities, constraints, information needs, roles, responsibilities, the schedule, and expectations. As part of the meeting, EKI and City staff will review and document new information since the 2019 IWRMP, including major infrastructure improvements, planning assumptions, supply estimates, and demand estimates. The team will assess impacts of the new information on master planning, revisit planning horizons, identify key analyses to be conducted as part of the IWRMP update and potential alternatives. EKI assumes this kickoff ineeting will be combined with the kickoff meeting for the WSMP and WWSMP amendments.

City of Lathrop ( EKI CO- 161) environment
25 February 2022 e I & water

Workshops/ Pro ress Meetin s: EKI will schedule and attend up to three ( 3) workshops or progress meetings with City staff and other stakeholders to review project status, preliminary results, and to solicit feedback for key project decisions. For all meetings, we will be responsible for preparing and distributing meeting notices, agendas, and minutes. EKI assumes these progress meetings will be combined with meetings for the WSMP and WWSMP amendments.

Proiect Schedule: We will prepare the project critical path schedule and will provide the City schedule updates as needed.

Proiect Communications and Proiect Mana ement Tasks: We will perform other project management tasks including as- needed communications and general consulting services, budget tracking, and invoicing. We will provide a budget and progress summary reports to the City with each invoice.

Deliverables:

Information request log.

Meeting agendas, presentations, and minutes.

Monthly budget and progress summary reports.

Key assumptions:

The initial data request will be combined with the requests forthe WSMP and WWSMP.

Kickoff and progress meetings will be held remotely over video conference.

Tasks required by Citystaff: Fulfill data requests in accordance with schedule expectations and participate in meetings.

Task 2 - Hydraulic Model Construction and System Description Updates In this task, EKI will update the City' s hydraulic model construction and update the description of the existing system and near-term planned improvements included in Section 3 of the 2019 RWSMP. EKI will perform the following subtasks:

Update the recycled water system hydraulic model network to incorporate system improvements completed since the IWRMP or those currently in design or construction.

Update the backbone recycled water system infrastructure included in the future hydraulic model for future development areas based on recent utility plans completed by developers.

Verify modeled pump curves and based on available SCADA data and pressure regulating valve settings based on operations staff.

Incorporate current plans and assumptions related to the River Discharge disposa) system.

Update the existing system description and near- term planned improvements, including the improvements associated with the wastewater effluent disposal to the San Joaquin River included in Section 3 of the 2019 RWSMP.

Deliverables:

Updated recycled water system geodatabase exported from the updated hydraulic model.

City of Lathrop ( EKI CO- 161) environment
25 February 2022 I & water

Draft of the revised existing system and planned near- term improvement description ( Section 3) from the 2019 RWSMP including tables of facility data attribute information and figures.

Key assumptions:

EKI will verify and refine the model construction for the future buildout scenario that was assumed as part of the November 2019 River Discharge project modeling effort.

EKI is not aware of any significant recent system improvements that are not captured in the existing hydraulic model and assumes that model network updates will be minimal.

City will provide the updated geodatabase for the current system and all as- built records for recent and current improvements in AutoCAD or PDF format.

Tasks required by City staff: Provide relevant as- built records and verify operational set points.

Task 3 - Updated Recycled Wafier Supply, Use, and Water Baldnce Evaluation This task will update the projected recycled water supplies, recycled water demands, and water balance evaluations. EKI will perform the following subtasks:

Verify and update landscape irrigation acreages and demands assumed in the 2020 UWMP, with consideration of the ongoing water use objectives legislative process.

Develop recycled water demand estimates for potential industrial users, the planned commercial use fill station, and the use of recycled water hydrants for construction water.

Update recycled water supply projections based on updated wastewater flow projections from the WWSMP amendment.

Review historical recycled water supply and use data ( i. e., wastewater effluent data, land application volumes, historical precipitation and evapotranspiration data, and pond storage levels) to calibrate the recycled water balance and verify the assumed parameters for irrigation efficiency, leaching factor, and effective precipitation.

Prepare updated recycled water balances for the near-term ( buildout of CTF Phase 2 expansion), long- term future, and buildout scenarios with application of the River Discharge Permit. Each scenario will compare options with and without industrial recycled water demands.

Verify the required storage and river discharge volumes required for each scenario.

Update the Tracking Tool database, as needed, to account for changes to disposal capacity.

Update the Study and Service Area ( Section 2) and Recycled Water Supply, Use, and Water Balance Evaluation ( Section 4) sections from the 2019 RWSMP.

Deliverables:

Updated tracking tool database for disposal capacity to account for changes in water balance parameters, if necessary.

Update the Study and Service Area ( Section 2) and Recycled Water Supply, Use, and Water Balance Evaluation ( Section 4) sections from the 2019 RWSMP.

City of Lathrop ( EKI CO- 161) environment
25 February 2022 ej I & water

Key assumptions:

The Tracking Tool database updates will be prepared in conjunction with efforts included in the scopes ofworkforthe WSMP and WWSMP amendments.

Monthly historical land application volumes and pond storage levels are available.

EKI will not evaluate alternative recycled water uses such potable reuse or expanded percolation beyond what was included in the 2019 RWSMP.

There is no need to re- evaluate the interim near- term scenarios ( i. e., Phase 1 and Phase 26 of CTF expansion) that were included in the 2019 RWSMP.

Tasks required by Citv staff: Provide historical data and review draft deliverables.

Task 4 - Update System Performance Criteria and Hydraulic Assessment After model updates, EKI will review system performance criteria and perform the recycled water system hydraulic assessment using the steady- state hydraulic model. EKI will perform the following subtasks:

Verify and update recycled water demand allocations for each scenario based on Task 3.

Review and update, if needed, system performance criteria.

Perform validation model runs to ensure connectivity and model convergence.

Set up and run model near- term, long- term, and buildout scenarios based on identified performance criteria.

Compare the updated hydraulic model results to those presented in the 2019 IWRMP and determine whether the results affect any of the recommendations presented in the IWRMP.

To address any newly identified deficiencies, EK will develop and model potential water system improvements and/ or operational changes, as needed.

EKI will prepare figures showing modeling results and the proposed improvements, highlighting any changes from the 2019 IWRMP.

EKI will update Sections 5 and 6 of the 2019 RWSMP based on the results of the analysis.

Deliverables: Drafts of updated System Performance and Operations Criteria ( Sections 5) and Hydraulic Assessment of Distribution System ( Section 6) of the 2019 RWSMP, including updated tables and figures.

Kev assumptions:

Modeling for the near- term future scenario without river discharge will not be updated from the results presented in the 2019 RWSMP unless it is evident that model updates are needed for this scenario.

Near-term, long- term, and buildout modeling scenarios with a river discharge permit will be added to the RWSMP.

New modeling scenarios with the river discharge permit will be run with and without assumed industrial demands.

Tasks required bv Citv staff: Review draft deliverables.

City of Lathrop ( EKI CO- 161)
environment 25 February 2022
j , &water Page 7 of 8
Task 5 - Recycled Water System Master Pian Amendment
Based on the evaluations performed as part of Tasks 3 and 4, EKI will develop conclusions and recommendations and document recommended CIPs if needed. EKI will prepare opinions of probable cost for each recommended project. EKI will work with the City to develop criteria for prioritizing these projects. EKI will submit a draft of the updated Conclusions and Recommendations (Section 7) from the 2019 RWSMP.

After City review of each draft RWSMP section prepared in Tasks 2 through 5, EKI will revise and compile each of the sections and prepare a complete draft RWSMP amendment for review by the City and key stakeholders. EKI will submit a final RWSMP amendment that incorporates the City' s and other stakeho der comments.

Deliverables:

Draft of updated Conclusions and Recommendations ( Section 7) section ofthe 2019 RWSMP.

Draft and Final RWSMP amendment ( 2 electronic copies [ PDF and Word versions]) Kev assumptions:

Comments from City and stakeholders on the Draft RWSMP will be minor and will not require additional technical analysis.

EKI assumes that a programmatic EIR is not required but can assist in preparation of the programmatic EIR as part of a separate work authorization.

Tasks required bv Citv staff: Review draft Section 7 and the Draft RWSMP Amendment.

Project Schedule
EKI is available to initiate work upon receiving authorization from the City. A general schedule for Tasks 1 through 5 is presented below.

Task i- Proiect Mana ement and Cnt rdir a# ion i;,'!"
Task 2- H draulic Madel Construction and S tem
Deseription Updates
T sk 3- Updated Recvcled Water 5upply Use a d
Water Balance Evaluatian
Tesk 4- Update Svstem Per€ormance Criteria and
draulic Assessment I
Task 5- Recvded Water System Master Rlan
j r[rft,Sett,v3n 7
raft Masrer P{an Report
P_
Frnor JasterPlara tepart
City of Lathrop ( EKI CO- 161) environment
25 February 2022 ej ' &water

Compensation for Consulting services
We propose that compensation for consulting services by EKI be on a time and expense reimbursement basis per our attached current Schedule of Charges, dated 2 January 2022. Based on the proposed Scope of Work described above, our estimated not- to- exceed budget is $ 90, 500 for the base scope Tasks 1 through 5, as foliows by task:

Task 1- Project Management and Communications 10, 200
Task 2- Hydraulic Model Construction and System Description Updates 16, 400 Task 3- Updated Recycled Water Supply, Use, and Water Balance Evaluation 21, 100 Task 4- Update System Performance Criteria and Hydraulic Assessment 17, 000 Task 5- Recycled Water System Master Plan Amendment 25, 800 A detailed budget table is included in Attachment A.

Terms and Conditions
Other than the scope of work, budget, and schedule herein, the work will be performed per the terms and conditions established in our current agreement with the City of Lathrop 13 July 2020.

Thank you for the opportunity to work with the City on this project. Please contact Jonathan Sutter at 650- 292- 9099 or jsutter@ekiconsult. com with any questions.

Very truly yours,
EKI ENVIRONMENT& WATER, INC.
421 c( L

1. t`-_
Anona Dutton, PG, CHg J than Sutter, PE
Vice President P oject Manager
Attachments:

A. Estimated Hours and Fee
B. EKI Schedule of Charges, dated 2 January 2022
Attachment A- Budget Estimate for Proposed Scope of Work Recycled Water System Master Pian Amendment, 2022 Integrated Water Resources Master Plan Amendment City of Lathrop, California
EKILabor Expenses TOTAL( 3)
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133 145 185 230 276 307 ($)
ask 1- Review of Available Information and Initial Meetin s Prepare, Review, and Document Requests for Information 4 2 1 1 1, 514 1, 514 Kickoff Meeting 2 2 1 1, 150 1, 150
Participate in three( 3) progress meetings/ workshops 8 6 6 1 $ 5, 016 5, 016 Prepare and periodically update project schedule 2 1 624 624 Other communications and project management tasks 4 2 1 $ 1, 850 1, 850 Subtotal 0 4 14 14 10 2 $ 10, 155 $ 0 $ 10, 200
ask 2- H draulic Model Construction and 5 stem Descri tion U dates Update hydraulic model for recent and planned system improvements 4 1 1 1, 296 1, 296 Update hydraulic model for recent development expansions 4 1 1 1, 296 1, 296 Update hydraulic model for updated development backbone infrastructure plans 8 2 2 2, 592 2, 592 Incorporate current plans and assumptions related to the River Discharge 8 2 2, 592 2, 592 Verify and update pump curves and other operational settings 6 4 1 1 2, 201 2, 201 Prepare draft update to Section 3 of RWSMP 8 8 8 4 4 1 $ 6, 276 $ 160 $ 6, 436 Subtota 8 14 36 11 11 1 $ 16, 252 $ 160 $ 16, 400
ask 3- U dated Re cled Water Su I Use and Water Balance Evaluation Verify and update acreages for landscape irrigation use with recycled water 2 8 2 1 1 2, 394 $ 40 $ 2, 434 Develop recycled water demand estimates for potential CII users 8 4 4 2 3, 507 3, 507 Update recycled water supply projections based on W WSMP amendment 2 1 624 624 Review and calibrate Recycled Water Balance parameters based on historical data 16 4 4 2 4, 713 4, 713 Prepare updated recycled water balances and verify storage and LI areas 8 4 2 1 2, 741 2, 741 Update tracking tool database 6 2 1 1, 529 1, 529
Prepare draft update to Section 2 and Section 4 of RWSMP 4 12 4 4 4 1 $ 5, 557 5, 557 Subtotal 6 58 22 17 SO 1 $ 21, 065 $ 40 $ 21, 100
ask 4- U date S stem Performance Criteria and H dreulic Assessment Review and Update performance criteria 4 2 2 1, 822 1, 822 Perform steady- state hydraulic modeling analysis to identify deficiencies 20 4 2 5, 379 5, 379 Compare results against IWRMP and evaluate proposed system improvements 8 4 1 2, 783 2, 783 Prepare draft update to Section 5 and Section 6 of RWSMP 8 4 12 8 2 1 $ 6, 826 $ 160 $ 6, 986 Subtotal 8 4 44 18 7 1 $ 16, 810 $ 190 $ 17, 000
ask 5- Rec cled Water 5 stem Master Plan Amendment
Develop updated cost factors and opinions of probable costs 8 12 4 2 5, 046 5, 046 Develop project prioritization strategy and prioritize identified projects 8 2 1 2, 305 2, 305 Prepare Draft Section 7 from RWSMP 8 8 12 4 1 5, 866 $ 160 $ 6, 186 Prepare Draft Master Plan Report 8 12 8 6 2 1 $ 6, 784 $ 410 $ 7, 354 Prepare Final Master Plan Report 8 8 4 4 1 4, 326 $ 410 $ 4, 896 Subtotal 24 36 44 20 7 1 $ 24, 327 $ 980 $ 25, 800
TOTAL: 46 116 160 SO 45 6 $ 85, 608 $ 1, 370 $ 90, 500
Notes:
1) A communications charge of 4% of labor costs covers e- mail access, web conferenting, tellphone calls, messaging and data access, file sharing, local and long distance telephone calls and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying. 2)" Other Direct Costs" includes direct expenses, as listed below, incurred in connection with the work and will be reimbursed at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reproductions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and contractors. c. Rented vehicles, local public transportation and taxis, travel and subsistence. d. Special fees, insurance, permits, and licenses applicable to the work. e. Outside computer processing, computation, and proprietary programs purchased for the work. 2) Task subtotals rounded to the nearest hundred dollars.

February 2022
CO- 161) Page 1 of 1 EKI Environment& Water, Inc.

Client/ Address: City of Lathrop
390 Towne Centre Drive,
eki environment
Lathrop, CA 95330 WQtgr
Proposal/ Agreement Date: 25 February 2022 EKI Proposal/ Project# CO- 161 SCHEDULE OF CHARGES FOR EKI ENVIRONMENT& WATER, INC. 2 January 2022 Personnel Classification Hourly Rate
Officer and Chief Engineer- Scientist 307
Principal Engineer- Scientist 296
Supervising I, Engineer- Scientist 286
Supervising II, Engineer- Scientist 276
Senior I, Engineer- Scientist 265
Senior II, Engineer- Scientist 255
Associate I, Engineer- Scientist 244
Associate II, Engineer- Scientist 230
Engineer- Scientist, Grade 1 214
Engineer- Scientist, Grade 2 202
Engineer- Scientist, Grade 3 185
Engineer- Scientist, Grade 4 165
Engineer- Scientist, Grade 5 145
Engineer- Scientist, Grade 6 128
Project Assistant 130
Technician 116
Senior GIS/ Database Analyst 150
CADD Operator/ GIS Analyst 133
Senior Administrative Assistant 147
Administrative Assistant 115
Secretary 96
Direct Expenses
Reimbursement for direct expenses, as listed below, incurred in connection with the work will be at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reproductions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and contractors. c. Rented vehicles, local public transportation and taxis, travel, and subsistence. d. Special fees, insurance, permits, and licenses applicable to the work. e. Outside computer processing, computation, and proprietary programs purchased for the work.

A Communication charge for e- mail access, web conferencing, cellphone calls, messaging and data access, file sharing, local and long distance telephone calls and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying will be charged at a rate of 4% of labor charges. Large volume copying of project documents, e. g., bound reports for distribution or project- specific reference files, will be charged as a project expense as described above.

Reimbursement for company- owned automobiles, except trucks and four- wheel drive vehicles, used in connection with the work will be at the rate of sixty cents($ 0. 60) per mile. The rate for company- owned trucks and four-wheel drive vehicles will be seventy- five cents($ 0. 75) per mile. There will be an additional charge of thirty dollars($ 30. 00) per day for vehicles used for field work. Reimbursement for use of personal vehicles will be at the federally allowed rate plus fifteen percent( 15%).

CADD Computer time will be charged at twenty dollars($ 20. 00) per hour. In- house material and equipment charges will be in accordance with the current rate schedule or special quotation. Excise taxes, if any, will be added as a direct expense.

Rate for professional staff for legal proceedings or as expert witnesses will be at a rate of one and one- half times the Hourly Rates specified above.

The foregoing Schedule of Charges is incorporated into the Agreement for the Services of EKI Environment& Water, Inc. and may be updated annually.

EXHIBIT C
Q environment
c & water
Corporate Office
2001 Junipero Serra Boulevard, Suite 300
Daly City, CA 94014
650) 292- 9100
ekiconsult. com
25 February 2022
Greg Gibson
Senior Civil Engineer
City of Lathrop— Public Works Department
390 Towne Centre Drive
Lathrop, CA 95330
Subject: Proposal for Wastewater System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment
City of Lathrop, California
EKI CO- 161)
Dear Mr. Gibson,
EKI Environment& Water, Inc. ( EKI) is pleased to submit this proposal for consulting services to assist the City of Lathrop( City) to prepare an amendment to its 2019 Wastewater System Master Plan ( WWSMP) as part of a comprehensive update to the City' s 2019 Integrated Water Resources Master Plan ( IWRMP).

Project Understanding and Background
EKI understands that the City is interested in completing a comprehensive amendment to the IWRMP.

The existing IWRMP, which includes the City' s Water System Master Plan, Wastewater System Master Plan, and Recycled Water System Master P an, was completed by EKI in December 2018 and approved by the City Council in December 2019 after a California Environmental Quality Act (CEQA) process.l Since the IWRMP was completed, new information has become available and certain planning assumptions have changed that require an amendment to the IWRMP, including the following:

Water Demand and Wastewater Flow Information: EKI performed an update to the City' s unit water demand factors and water demand projections in July 2020 to support the River Islands Phase 2 development Water Supply Assessment, which were later incorporated into the City' s 2020 Urban Water Management Plan ( UWMP). The updated demand evaluation was based on the City' s water use patterns observed since the 2014- 2017 drought and updated development projections, which have changed most significantly in the River Islands development area. The updated analysis projected a significantly lower future water demand compared to the IWRMP, which was based on the City' s pre- drought water use patterns. 1 Final Council- approved IWRMP is dated December 2019, but content is consistent with December 2018 Draft IWRMP. Existing WWSMP is referred to as the 2019 WWSMP, herein.

Davis, CA• Marin, CA• Oakland, CA• Roseville, CA• Irvine, CA Centennial, CO• Glastonbury, CT• Holyoke, MA• Saratoga Springs, NY City of Lathrop ( EKI CO- 161) environment
25 February 2020 ej I & water

It is anticipated that similar changes have occurred with the City' s wastewater flow patterns, which calls for an update to the City' s wastewater flow factors and wastewater generation projections. As part of the proposed scope, EKI will conduct wastewater flow monitoring at various locations across the City to: (1) support the reevaluation of wastewater flow factors, and 2) attempt to capture a major storm event, which did not occur during the 2018 flow monitoring event.
n addition, ongoing legislation of the supplier annual water use objectives may further reduce the City' s projected water demand and wastewater flows. The Department of Water Resources DWR) and the State Water Resources Control Board ( SWRCB) submitted a report in November 2021 recommending the indoor water use efficiency standards to be reduced to 42 gallons by 2030 and beyond. The amended IWRMP will assess the implication of the ongoing legislation.

New Development Facility Plans: The Lathrop City Council approved the modified River Islands Phase 2 project on June 14, 2021. The project includes land uses changes for new development in the River Islands development area and expansion of the City' s distribution system. The project' s master planning documents including potable water, non- potable water, and wastewater facility technical reports were completed in November 2020. The amended IWRMP will need to incorporate wastewater flows and associated infrastructure for planned new development and evaluate their impacts on the overall system.

General Plan Update: The City has initiated a General Plan Update and filed a Notice of Preparation for the Environmental Impact Report in October 2021. The City anticipates completing the General Plan Update in 2022. The growth projections in amended IWRMP will be consistent with those included in the General Plan Update.

River Discharge Permit and Recycled Water Deliveries: The City has obtained a River Discharge Permit to dispose a portion of the wastewater treated at the Lathrop Consolidated Treatment Facility( CTF) in the San Joaquin River and deliverthe remaining recycled waterto retail customers.

To support use of recycled water for landscape irrigation, the City obtained coverage under General Order WQ- 2019- 0058- DDW- R5017 and submitted a Title 22 Report Addendum in 2020.

The City began delivering recycled water for urban uses in the summer of 2021. These changes affect the operations and infrastructure needed for the City' s wastewater effluent disposal and recycled water distribution systems. Evaluations completed to support these efforts need to be incorporated into the amended IWRMP.

As part of the IWRMP amendment, EKI will also update and recalibrate the City' s water, wastewater, and recycled water hydraulic models to incorporate recent infrastructure improvements and system expansions, updated demand and flow projections, and current operational strategies. Based on updated hydraulic evaluations, EKI will amend the City' s capital improvement program ( CIP) for each system. EKI will also update the existing Tracking Tool Database to track available water supply, wastewater treatment, and wastewater disposal capacity for each developer.

City of Lathrop ( EKI CO- 161) environment
25 February 2020 I & water

Proposed Scope of Work
EKI proposes the following tasks as part of this scope of work to amend the City' s 2019 WWSMP as part of a comprehensive amendment to the City' s 2019 IWRMP.

Task 1 - Project Management and Coordination
EKI will provide project management and general consultation services to the City. This task includes coordination and communications with City staff, general consultation, and technical project management services. Frequent and clear communication with the City throughout the development of the WWSMP update will be important to ensure that the plan meets the City' s expectations and stays on schedule. Specific tasks include:

Information Mana ement: Specific information will be required for amending the WWSMP. EKI will prepare a list of information requests and submit the list to City staff. EKI will compile and review information. Information requests are expected to include:
o Current and projected land use information that reflects new development and the proposed General Plan Update;
o Records of recent wastewater allocation( ISU/ ECU) transfers since the 2019 Tracking Too) development;
o Current screenshots of Supervisory Control and Data Acquisition (SCADA) system HumanMachine Interface ( HMI) showing operational setpoints for each wastewater system facility;
o SCADA historian data in 5- minute polling intervals or less for pump station flow, wet well levels, and other available flow meters since 2017;
o Record drawings or AutoCAD drawings for wastewater system improvements completed since 2018 or design drawings for projects currently under construction; o Updated water system geodatabase that incorporates all of the improvements completed since 2018; and,
o Recent wastewater system utility planning documents for new development.

This information request will be coordinated with the information needed for the Water System Master Plan ( WSMP) and the Recycled Water System Master Plan ( RWSMP).

Kickoff Meetin: At the kick- off ineeting, EKI and City staff will discuss project goals, opportunities, constraints, information needs, roles, responsibilities, the schedule, and expectations. As part ofthe meeting, EKI and Citystaffwill review and document new information since the 2019 IWRMP, including major infrastructure improvements, planning assumptions, supply estimates, and demand estimates. The team will assess impacts of the new information on master planning, revisit planning horizons, identify key analyses to be conducted as part of the IWRMP update and potential alternatives. As discussed in Task 3, EKI will also review the flow monitoring plan as part of the kickoff ineeting. EKI assumes this kickoff ineeting will be combined with the kickoff ineeting for the WSMP and RWSMP amendments.

Workshops/ Pro ress Meetin s: EKI will schedule and attend up to three ( 3) workshops or progress meetings with City staff and other stakeholders to review project status, preliminary results, and to solicit feedback for key project decisions. For all meetings, we will be responsible City of Lathrop ( EKI CO- 161) environment
25 February 2020 P, I & water

for preparing and distributing meeting notices, agendas, and minutes. EKI assumes these progress meetings will be combined with meetings for the WSMP and RWSMP amendments.

Project Schedule: We will prepare the project critical path schedule and will provide the City schedule updates as needed.

Prolect Communications and Proiect Mana ement Tasks: We will perform other project management tasks including as- needed communications and general consulting services, budget tracking, and invoicing. We will provide a budget and progress summary reports to the City with each invoice.

Deliverables:

Information request log.

Meeting agendas, presentations, and minutes.

Monthly budget and progress summary reports.

Key assumptions:

The initial data request will be combined with the requests for the WSMP and the RWSMP.

Kickoff and progress meetings will be held remotely over video conference.

Tasksrepuired byCitystaff' Fulfill data requests in accordance with schedule expectations and participate in meetings.

Task 2 - Hydraulic Model Construction and System Description Updates As part of this task, EKI will update the City' s hydraulic model construction and update the description of the existing system included in Section 3 of the 2019 WWSMP. EKt will perform the following subtasks:

Update the wastewater system hydraulic model network to incorporate system improvements completed since the IWRMP orthose currently in design or construction.

Update the existing wastewater system hydraulic model network to incorporate system expansions related to new development since the IWRMP, including verifying ground surface and pipeline elevations in these areas based on publicly available data.

Update the backbone wastewater system infrastructure included in the future hydraulic model for future development areas based on recent utility plans completed by developers ( e. g., the November 2020 River Islands facility technical reports).

Verify operational settings with City operations staff and update settings in the hydraulic model for all pump stations.

Perform validation model runs to ensure connectivity and model convergence.

Update the existing system description included in Section 3 of the 2019 WWSMP.

Deliverables:

Updated wastewater system geodatabase exported from the updated hydraulic model.

Draft of revised existing system description ( Section 3) from the WWSMP including tables of facility data attribute information and figures.

City of Lathrop ( EKI CO- 161) environment
25 February 2020
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Key assumptions:

City will provide the updated geodatabase for the current distribution system and all as- built records for recent and current improvements in AutoCAD or PDF format.

City will provide current operational setpoints via SCADA HMI exports and operations staff will be available to answer questions.

Tasks repuired by Citv staff• Provide relevant GIS data and as- built records and verify operational set points.

Task 3 - Flow Monitoring
EKI will conduct temporary flow monitoring at up to ten ( 10) locations across the City. At each location, a flow meter will be installed to monitoring wastewater flows over a one- month ( i. e. 30- day) period during Winter/ Spring 2022, in an attempt to collect data during at least one rainfall event. EKI will work with City staff to review 2018 and 2019 flow monitoring locations and select monitoring sites that are representative of each major land use category. EKI will prepare a monitoring plan that summarizes the approach and strategy for selection of flow monitoring sites. Due to the anticipated project schedule, this plan will be developed immediately following notice to proceed and will be reviewed with the City during the kickoff ineeting.

EKI will team with Total Flow, Inc. ( TFI) to install, calibrate, monitor, and remove flow monitoring equipment and collect and report data. Specific work to be performed by TFI at each location includes the following:

Pre- monitoring inspection to confirm hydraulic suitability, take photos and videos, make measurements, make notes of each potential site, and propose alternative sites, if necessary.

Rental, installation, and calibration of Hach FL900 flow meters at each site.

Installation of a continuous event recording rain gauge.

Weekly maintenance of ineters and rain gauges and bi- weekly calibration offlow monitors.

Weekly review of velocity-depth scatterplots to confirm meter sensor are performing and not drifting.

Preparation of a monitoring report and provision of raw data in excel format.

EKI anticipates flow monitoring will begin in March 2022. Flow monitoring data collected under this task will support evaluation of wastewater flow factors and wet weather peaking factors in Task 4. EKI will update Appendix F of the 2019 WWSMP with the 2022 flow monitoring results.

Deliverables:

Flow monitoring plan that summarizes the approach and strategy for selection of flow monitoring sites.

Raw monitoring data in Excel format.

Draft of updated Appendix F ( Temporary Flow Monitoring Results) of the WWSMP including a flow monitoring report and figures.

City of Lathrop ( EKI CO- 161) environment
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Key assumptions:

EKI and TFI will install up to ten ( 10) meters and one rain gauge at selected sites for a period of one month( 30 days). Flow monitoring may be extended a weekly basis for selected meters, under additional scope and budget, if a significant rain event is not captured within the first month.

Tasks repuired by City staff: Meet with EKI staff to review the flow monitoring plan ( during a progress meeting).

Task 4- Wastewater Flow Evaluation, Model Flow Realiocations, Model Calibration, and Tracking Tool Update
This task will update the wastewater flow and peaking factors used in the model, perform model calibrations, and update the relevant sections in the 2019 WWSMP.

EKI will perForm the following subtasks to evaluate and verify unit wastewater flow factors:

Review and process pump station SCADA data.

Calculate unit wastewater flow factors for each representative land use using City biliing data, pump station SCADA data, and flow monitoring data collected underTask 3.

Reallocate parcel- by- parcei wastewater flow in the model based on updated flow evaluation and geocode and allocate flows associated with new development added since the prior hydraulic model update.

Reallocate near-term future, long- term future, and buildout wastewater generation within the future hydraulic models based on the updated flow factor evaluation.

Create modeling inputs for existing, near- term, future, and buildout conditions.

Perform dry weather model calibration by comparing modeled ffows to observed flows from flow monitoring and verify unit wastewater flow factors.

Update parcel- level wastewater flow altocation data in Tracking Tool database, including tracking of ISU/ ECU wastewater allocations.

EKI will perForm the following subtasks to evaluate and calibrate peak wet weather flow( PWWF):

Evaluate PWWF peaking factors using flow monitoring ( if available) and pump station SCADA data.

If a significant wet weather response was captured during temporary flowing monitoring, review the applicability of another rainfall- derived infiltration and inflow ( RDII) calibration model, perform wet weather model calibration using an applicable RDII model, and develop groundwater infiltration and RDII parameters for each drainage area.

EKI will perform the following to update the 2019 WWSMP:

Update Wastewater Generation Factor Evaluation ( Appendix A) and Wastewater Peaking Factor Evaluation ( Appendix B) from the 2019 WWSMP.

Update Study and Water Service Area ( Section 2) and Existing and Future Wastewater Generation Section 4) from the 2019 WWSMP.

City of Lathrop( EKI CO- 161) environment
25 February 2020 Pj &water

Deliverables:

Updated Tracking Tool database with updated parcel- level wastewater allocation data.

Draft of updated Wastewater Generation Factor Evaluation ( Appendix A) and Wastewater Peaking Factor Evaluation ( Appendix B) from the 2019 WWSMP with tables and figures summarizing wastewater flow factor and peaking factor evaluation, including calibration results.

Draft of revised Study and Water Service Area ( Section 2) and Existing and Future Wastewater Generation ( Section 4) sections from the 2019 WWSMP including all tables and figures.

Key assumptions:

The Tracking Tool database updates will be prepared in conjunction with efforts included in the scopes of work for the RWSMP and WSMP amendments.

SCADA data is available in less than 10- minute intervals for each pump station and tank.

Tasks required by City staff: Provide SCADA data and review draft deliverables.

Task 5 - Modeling Analysis to Evaluate System Performance Following model calibration, EKI will utilize the updated model to evaluate the capacity of the overall wastewater system under existing and future PWWF conditions. EKI will compare results with the updated hydraulic model to those presented in the 2019 IWRMP and determine whether the results affect any of the improvement projects presented in the IWRMP.

Additionally, EKI will evaluate the capacities of the City' s existing and future treatment facilities based on updated wastewater generation projections. EKI will also evaluate the capacity of storage and pumping facilities under PWWF conditions based on established performance criteria. EKI will compare existing available capacities against current and projected capacity requirements, based on the established performance criteria and the existing and projected flows, and identify whether storage and/ or pumping capacity is needed.

To address any newly identified deficiencies, EKI will develop and model potential wastewater system improvements and/ or operational changes. EKI will prepare figures showing modeling results for the existing, near-term, future, and buildout scenarios and the proposed improvements, highlighting any changes from the 2019 IWRMP. EKI will update Section 6 of the 2019 WWSMP based on the results of the analysis.

Deliverables: Draft of updated Hydraulic Assessment of the Collection System ( Section 6) of the 2019 WWSMP, including updated tables and figures.

Kev assumptions: EKI assumes that the performance criteria established in Section 6 of the 2019 WWSMP will not change.

Tasks required by City staff: Review draft deliverables.

Task 6 - Wastewater System Master Plan Amendment
Based on the evaluations performed as part of Task 5, EKI will develop a revised recommended CIP. EKI will update cost factors based on the current construction market and update opinions of probable cost City of Lathrop ( EKI CO- 161)
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25 February 2020 water

for each project. EKI will work with the City to develop criteria for prioritizing these projects and will establish project priorities based on this criteria. EKI will submit a draft of the updated Recommended CIPs ( Section 7) and Recommended CIP details ( Appendix E) from the 2019 WWSMP.

After City review of each draft WWSMP section prepared in Tasks 2 through 6, EKI will revise and compile each of the sections and prepare a complete draft WWSMP amendment for review by the City and key stakeholders. EKI will submit a final WWSMP amendment that incorporates the City' s and other stakeholder comments.

Deliverables:

Draft of updated Recommended Capital Improvement Projects( Section 7) and Recommended CIP details ( Appendix E) of the 2019 WWSMP.

Draft and Final WWSMP amendment( 2 electronic copies [ PDF and Word versions]) Key assumptions:

Comments from City and stakeholder on Draft WWSMP will be minor and will not require additional technical analysis.

EKI assumes that a programmatic EIR is not required but can provide technical support in preparation of a programmatic EIR as part of a separate work authorization.

Tasks required by City staff: Review draft Section 7 and the Draft WWSMP Amendment.

Project Schedule
EKI is available to initiate work upon receiving authorization from the City. A general schedule for Tasks 1 through 6 is presented below.

Taski- RroleckMana ementen fCr crrdinatic n " i
a.,,.

Gt. w
iTask 2- Hydrauiic Madel Construction and System
De€ ription llpdates
Task 3- Flow A1lonike rin
iTask 4— Wastewater FIQw Flow Evaluatian, Model
Flow Reall c:atiQns, McRdel Calibration, and
Trackin Tao) Update
Task 5— Mca delirr Analysis ta Eualuate System
Rer#arrnance
Task 5- Wastewater Syste l Master Plan
Amendm nt
Draft Ser ian 7( C'tP)
i3raft Mdster Pks.n Re ort
Final Master Plan Report
City of Lathrop ( EKI CO- 161) environment
25 February 2020 water

Compensation for Consulting Services
We propose that compensation for consulting services by EKI be on a time and expense reimbursement basis per our attached current Schedule of Charges, dated 2 January 2022. Based on the proposed Scope of Work described above, our estimated not- to- exceed budget is $ 183, 400 for Tasks 1 through 6, as follows by task:

Task 1- Project Management and Communications 11, 200
Task 2- Hydraulic Model Construction and System Description Updates 22, 200 Task 3- Flow Monitoring 59, 200
Task 4- Wastewater Flow Evaluation, Model Flow Reallocations, Model Calibration, and Tracking Tool Update
41, 400
Task 5- Modeling Analysis to Evaluate System Performance 20, 900 Task 6- Wastewater System Master Plan Amendment 28, 500 A detailed budget table is inciuded in Attachment A.

Terms and Conditions
Other than the scope of work, budget, and schedule herein, the work will be performed per the terms and conditions established in our current agreement with the City of Lathrop 13 July 2020.

Thank you for the opportunity to work with the City on this project. Please contact Jonathan Sutter at 650- 292- 9099 or jsutter@ekiconsult. com with any questions.

Very truly yours,
EKI ENVIRONMENT& WATER, INC.
1 I c+ l< f.,._'
Anona Dutton, PG, CHg nathan Sutter, PE
Vice President Project Manager
Attachments:

A. Budget Estimate for Proposed Scope of Work
B. EKI Schedule of Charges, dated 2 January 2022
Attachment A- Budget Estimate for Proposed Scope of Work Wastewater System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment City of Lathrop, California
EKILabor Expenses TOTAL 3)
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133 165 , 230 276 307 ($)
ask 1- Review of Available Information and Initial Meetin s I Prepare, Review, and Document Requests for Information 4 I, 2 1, 165 0 1, 165 Kickoff Meeting 2 2 2 1 $ 1, 715 0 1, 715
Participate in three( 3) progress meetings/ workshops 12 6 6 5, 217 0 5, 217 Prepare and periodically update project schedule 2 ' 1 582 0 582 Other communications and project management tasks 8 2 $ 2, 552 0 2, 552 Subtotal 0 20 19 8 3 $ 11, 231 0 11, 200
ask 2- H dreulic Model Construction and S stem Descri tion U dates Update hydraulic model for recent system improvements 16 2 1 3, 511 0 3, 511 Update hydraulic model for recent development expansions 24 2 1 4, 884 0 4, 884 Update hydraulic model for updated development backbone infrastructure plans 20 2 1 4, 197 0 4, 197 Verify and update operational settings 8 2 1 2, 138 0 2, 138 Perform model validation runs 8 2 1 2, 138 0 2, 138
Prepare draft update to Section 3 of WWSMP 4 16
i 4 2 1 $ 5, 149 80 5, 309
Subtotal 4 92
I
14 7 1 $ 22, 018 $ 100 $ 22, 200
ask 3- Flow Monitorin
Develop and review Flow Monitoring Plan with City staff 10 20 I 4 2 1 $ 6, 665 $ 200 $ 7, 065 Perform flow monitoring 16 z Ss, zza 5aa, sso Sa, a
Prepare data submittal and QA/ QC 4 2 1, 165 0 1, 165
Prepare draft update to Appendix F of WWSMP 8 8 2 1 3, 245 0 3, 245 Subtotal 18 48 I 10 3 1 $ 14, 299 $ 44, 800 $ 59, 200
ask 4- Wastewater Flaw Flow Evaluation Model Flow Reallocations Model Calibration and Trackin Tool U date Review and process pump station SCADA data 16 ' 6 4, 181 0 4, 181 Calculate and verify unit wastewater flow factors 2 24 '' 8 2 1 $ 7, 202 40 7, 282 Reallocate parcel- level flow in model 2 16 2 1 3, 788 40 3, 868 Update parcel- level wastewater allocation data in tracking tool database S 2 1, 851 0 1, 851 Reallocate wastewater generation for near- term, long- term, and buildout future scenarios 12 ' i 2 2, 538 0 2, 538 Create modeling input sets for each scenario q i 1 1 1, 213 0 1, 213 Perform dry weather calibration q z 1 1, 452 0 1, 452
Evaluate peak wet weather flow peaking factors 16 I 4 2 4, 276 0 4, 276 Perform wet weather calibration 8 ' 2 1 2, 138 0 2, 138 Prepare updated Appendices A and B p ' g q g 6, 813 0 6, 813 Prepare draft update to Se tions 2 and 4 of WWSMP 4 20 4 2 1 $ 5, 835 80 5, 835 Subtotal 8 148 i 41 14 3 $ 41, 287 $ 200 $ 41, 400
ask 5- Modelin Anal sis to Evaluate S stem Performance
Perform steady- state hydraulic modeling analysis to identify deficiencies 12 , 4 3, 016 0 3, 016 Compare results against IWRMP and evaluate proposed system improvements 12 I 4 1 3, 303 0 3, 303 Prepare updated treatment, storage, and pumping capacity evaluation 12 8 1 1 $ 4, 579 0 4, 579 Prepare draft update to Sedion 6 of WWSMP 16 20 , 12 4 1 $ 9, 983 $ 320 $ 9, 983 Subtotal 16 56 . 28 6 2 $ 20, 881 $ 400 $ 20, 900
ask 6- Wastewater 5 stem Master Plan Amendment
Develop updated cost factors and opinions of probable costs 20 ' i 4 8 6, 685 0 6, 685 Develop project prioritization strategy and prioritize identified projects 6 ' 4 1 2, 273 0 2, 273 Prepare Draft Section 7 and Appendix E from WWSMP 16 16 4 2 6, 490 $ 320 $ 6, 810 Prepare Draft Master Plan Report 8 16 8 4 1
Prepare final Master Plan Report 4- 1 2
7, 233 $ 410 $ 7, 643_
4, 697 $ 410 $ 5, 107
Subtotal 32 o I za i 1 gv,s s $ i,zoo gza, soo
TOTAL: 78 434 136 55 11 $ 137, 094 $ 46, 480 $ 183, 400 Feburary 2022
CO- 161) Page 1 of 2 EKI Environment& Water, Inc.

Attachment A- Budget Estimate for Proposed Scope of Work Wastewater System Master Plan Amendment, 2022 Integrated Water Resources Master Plan Amendment City of Lathrop, California
Notes:
1) A communitations charge of 4% of labor tosts covers e- mail access, web conferencing, cellphone calls, messaging and data actess, fle sharing, local and long distance telephone calis and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying. 2)" Other Direct Costs" includes direct expenses, as listed below, incurred in connection with the work and will be reimbursed at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reprodudions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and tontractors. c. Rented vehicles, local public transportation and taxis, travel and subsistence. d. Special fees, insurante, permits, and licenses applitable to the work. e. Outside computer processing, computation, and proprietary programs purthased for the work. 2) Task subtotals rounded to the nearest hundred dollars.

Feburary 2022
CO- 161) Page 2 of 2 EKI Environment& Water, Inc.

Client/Address: City of Lathrop
390 Towne Centre Drive, eki
environment
Lathrop, CA 95330 water
Proposal/ Agreement Date: 25 February 2022 EKI ProposallProject# CO- 161 SCHEDULE OF CHARGES FOR EKI ENVIRONMENT& WATER, INC. 2 January 2022 Personnel Classification Hour y Rate
Officer and Chief Engineer- Scientist 307
Principal Engineer- Scientist 296
Supervising I, Engineer- Scientist 286
Supervising II, Engineer- Scientist 276
Senior I, Engineer- Scientist 265
Senior II, Engineer- Scientist 255
Associate I, Engineer- Scientist 244
Associate II, Engineer- Scientist 230
Engineer- Scientist, Grade 1 214
Engineer- Scientist, Grade 2 202
Engineer- Scientist, Grade 3 185
Engineer- Scientist, Grade 4 165
Engineer- Scientist, Grade 5 145
Engineer- Scientist, Grade 6 128
Project Assistant 130
Technician 116
Senior GIS/ Database Analyst 150
CADD Operator/ GIS Analyst 133
Senior Administrative Assistant 147
Administrative Assistant 115
Secretary 96
Direct Expenses
Reimbursement for direct expenses, as listed below, incurred in connection with the work will be at cost plus ten percent( 10%) for items such as:
a. Maps, photographs, reproductions, printing, equipment rental, and special supplies related to the work. b. Consultants, soils engineers, surveyors, drillers, laboratories, and contractors. c. Rented vehicles, local public transportation and taxis, travel, and subsistence. d. Special fees, insurance, permits, and licenses applicable to the work. e. Outside computer processing, computation, and proprietary programs purchased for the work.

A Communication charge for e- mail access, web conferencing, cellphone calls, messaging and data access, file sharing, local and long distance telephone calls and conferences, facsimile transmittals, standard delivery U. S. postage, and incidental in- house copying will be charged at a rate of 4% of labor charges. Large volume copying of project documents, e. g., bound reports for distribution or project- specific reference files, will be charged as a project expense as described above.

Reimbursement for company- owned automobiles, except trucks and four- wheel drive vehicles, used in connection with the work will be at the rate of sixty cents ($ 0. 60) per mile. The rate for company- owned trucks and four- wheel drive vehicles will be seventy- five cents ($ 0. 75) per mile. There will be an additional charge of thirty dollars($ 30. 00) per day for vehicles used for field work. Reimbursement for use of personal vehicles will be at the federally allowed rate plus fifteen percent( 15%).

CADD Computer time will be charged at twenty dollars ($ 20. 00) per hour. In- house material and equipment charges will be in accordance with the current rate schedule or special quotation. Excise taxes, if any, will be added as a direct expense.

Rate for professional staff for legal proceedings or as expert witnesses will be at a rate of one and one- half times the Hourly Rates specified above.

The foregoing Schedule of Charges is incorporated into the Agreement for the Services of EKI Environment& Water, Inc. and may be updated annually.