Lathrop City Council
April 13, 2026

ITEM 4. 11

CITY MANAGER' S REPORT
APRIL 13, 2O26 CITY COUNCIL REGULAR MEETING
ITEM: APPROVE PROFESSIONAL SERVICES AGREEMENT

WITH PACIFIC ADVANCED CIVIL ENGINEERING,
INC. ( PACE) FOR GROUNDWATER TREATMENT
IMPROVEMENTS, CIP PW 2O- 16
RECOMMENDATION: Adopt Resolution to Approve a Professional Services Agreement with Pacific Advanced Civil Engineering,
Inc. (PACE) for Engineering Consulting Services for
Groundwater Treatment Improvements, CIP PW 2O16
SUMMARY:

Perfluoroalkyl and polyfluoroalkyl substances ( PFAS) have been detected in the City' s groundwater supply at concentrations exceeding State and Federal drinking water standards. Additional treatment for PFAS at the Louise Avenue Water Treatment Facility ( LAWTF) is needed to protect public health and maintain regulatory compliance.

Staff requests that the City Council approve the attached Professional Services Agreement ( PSA) with Pacific Advanced Civil Engineering, Inc. (PACE) in the amount of $ 975, 888to provide professional engineering consulting services for the design of the CIP PW 20- 16 Groundwater Treatment Improvements, which will include addition of PFAS treatment at the LAWTF.

BACKGROUND:

PFAS are a group of man-ade chemicals used for fire -fighting foam, food packaging, stain and water- repellent and non- stick commercial products since the 1940s. PFAS are very persistent in the environment and in the human body - meaning they don' t break down and they can accumulate over time.

On October 11, 2019, Council approved the creation of CIP PW 20- 16 Groundwater Treatment Improvements after PFAS was discovered to be present in the City' s groundwater supply. This project is needed to address the presence of PFAS and other constituents of concern that have been detected in the City' s groundwater supply. State and Federal regulatory requirements associated with the use of groundwater containing PFAS for drinking water are anticipated to go into effect in 2029. Non- compliance with these regulations could result in enforcement actions, or discontinuation of using the City' s
wells for a drinking water supply.

On February 11, 2026, staff issued a Request for Proposals ( RFP) for professional engineering consulting services to provide design services to add PFAS treatment at the LAWTF. Two ( 2) proposals were received by the March 4, 2026 deadline. After CITY MANAGER' SREPORT PAGE 2
APRIL 13, 2026, CITY COUNCIL REGULAR MEETING

APPROVE PROFESSIONAL SERVICES AGREEMENT WITH PACE FOR
GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
evaluating and ranking the proposals, staff determined PACE to be the most qualified consultant for the City' s needs on this project.

Staff recommends that City Council approve a Professional Services Agreement ( PSA) with PACE to provide professional engineering services for CIP PW 20- 16 Groundwater Treatment Improvements.

REASON FOR RECOMMENDATION:

Staff requests City Council approve a PSA with PACE in the amount of $ 975, 888 to provide professional engineering consulting services for the design, and construction support services for the of addition of PFAS treatment at the LAWTF for CIP PW 20- 16 Groundwater Treatment Improvements. This project is needed to protect public health and maintain regulatory compliance.

FISCAL IMPACT:

The cost of the Professional Services Agreement with PACE is $ 975, 888. Sufficient funds were included in the Fiscal Year 2026-027 budget needed for the cost of this agreement.

ATTACHMENTS:

A. Resolution to Approve a Professional Services Agreement with Pacific Advanced Civil Engineering, Inc. ( PACE) for Engineering Consulting Services for Groundwater Treatment Improvements, CIP PW 20- 16
B. Professional Services Agreement with Pacific Advanced Civil Engineering, Inc.

PACE) for Engineering Consulting Services for CIP PW 20- 16 Groundwater Treatment Improvements
CITY MANAGER' SREPORT PAGE 3
APRIL 13, 2026, CITY COUNCIL REGULAR MEETING

APPROVE PROFESSIONAL SERVICES AGREEMENT WITH PACE FOR
GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16

APPROVALS
iiigm+.-%-
Greg Gilfson Date
Senior Civil Engineer
Brad aylor
Public W
Cari Jam
Finance ector
irector/ City Engineer
Date
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Date
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Thomas Hedegard Date
Deputy City Manager
3• ZCe • 2oZCo
Michael King Date
Assistant City Manager
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Salvador Navarrete Date
City Attorney
3•-1• 2Lo
Stephen J. Salvatore Date
City Manager
RESOLUTION NO. 26 -

A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF LATHROP TO

APPROVE A PROFESSIONAL SERVICES AGREEMENT WITH PACIFIC
ADVANCED CIVIL ENGINEERING, INC. ( PACE) FOR ENGINEERING

CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS CIP PW 20- 16
WHEREAS, perfluoroalkyl and polyfluoroalkyl substances ( PFAS) have been detected in the City' s groundwater supply at concentrations exceeding State and Federal drinking water standards; and
WHEREAS, on October 11, 2019, Council approved the creation of CIP PW 20- 16 Groundwater Treatment Improvements after PFAS was discovered to be present in the City' sgroundwater supply; and
WHEREAS, treatment for PFAS at the Louise Avenue Water Treatment Facility LAWTF) is needed to protect public health and maintain regulatory compliance; and WHEREAS, on February 11, 2026, staff issued a Request for Proposals ( RFP) for professional engineering consulting services to provide design services to add PFAS treatment at the LAWTF; and
WHEREAS, two ( 2) proposals were received by the March 4, 2026 deadline; and
WHEREAS, after evaluating and ranking the proposals, staff determined Pacific Advanced Civil Engineering, Inc. (PACE) to be the most qualified consultant for the City' s needs on this project; and
WHEREAS, the cost of the PSA is $ 975, 888and sufficient funds were included in the Fiscal Year 2026-027 budget needed for the cost of this agreement; and WHEREAS, staff requests Council approve a Professional Services Agreement PSA) with PACE to provide professional engineering services for CIP PW 20- 16 Groundwater Treatment Improvements.

NOW, THEREFORE, BE IT RESOLVED, the City Council of the City of Lathrop does hereby approve a Professional Services Agreement with Pacific Advanced Civil Engineering, Inc. in the amount of $ 975, 888 for engineering consulting services needed to support the addition of PFAS treatment at the LAWTF for the Groundwater Treatment Improvements, CIP PW 20- 16.

The foregoing resolution was passed and adopted this 13th day of April 2026, by the following vote of the City Council, to wit:

AYES:

NOES:

ABSENT:

ABSTAIN:

Paul Akinjo, Mayor
ATTEST: APPROVED AS TO FORM:

Teresa Vargas, City Clerk Salvador Navarrete, City Attorney

ATTACHMENT B'

CITY OF LATHROP

AGREEMENT FOR PROFESSIONAL SERVICES WITH PACIFIC ADVANCED CIVIL ENGINEERING, INC.

TO PROVIDE PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR THE GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
THIS AGREEMENT, dated for convenience this 13th day of April, 2026, is by and between Pacific Advanced Civil Engineering, Inc. ("CONSULTANT") and the City of Lathrop, a California municipal corporation (" CITY");
RECITALS:

WHEREAS, CONSULTANT is specially trained, experienced, and competent to perform Professional Engineering 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 Engineering 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 Services in accordance with the scope of work and fee proposal provided by CONSULTANT, attached hereto as Exhibit " A" 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' Ssatisfaction. 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 $ 975, 888 for the Professional Engineering Consulting Services set forth in Exhibit "A". 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", 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. 3) Effective Date and Term
CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
The effective date of this Agreement is April 13, 2026, and it shall terminate no later than June 30, 2028.
4) Independent Contractor Status
It is expressly 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' ssatisfaction. CONSULTANT expressly warrants not to represent, at any time or in any manner, that CONSULTANT is an employee of the CITY.
5) Billings
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' Sbills 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 change order.
6) Advice and Status Reporting
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) Assignment of Personnel
CONSULTANT acknowledges that the CITY has relied on CONSULTANT' s capabilities
and on the qualifications of CONSULTANT' sprincipals and staff as identified in its proposal to CITY. The services shall be performed by, or under the direct supervision, of CONSULTANT' sAuthorized Representative: Andy Komor, PE. 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,
project staff
and
prior
shall
to any
be
change.
notified by CONSULTANT of any changes ,of CONSULTANT' s 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

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CQNSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16 '
the City to process a reason or explanation for its request. 8) Assignment and Subcontracting
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' Sauthorized 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' Sauthorized representative. 9) 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' Ssole 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 one million dollars ($ 1, 000,00). 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 for loss arising from work performed under this Agreement.
b) Commercial General Insurance. CONSULTANT, at CONSULTANT' Sown cost and expense, shall maintain commercial general liability insurance for the period covered by this Agreement in an amount not less than two million dollars ($ 2, 000,0) per occurrence, four million dollars ($ 4, 000,0) general aggregate, and two million dollars ($ 2, 000,00) products and completed operations aggregate for risks associated with the work contemplated by this Agreement. 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.

Coverage shall be at least as broad as Insurance Services Office Commercial General Liability occurrence form CG 00 01.

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
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 additional insureds 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.
iv) Coverage shall allow and be endorsed to include a waiver of subrogation in favor of the CITY, its officers, employees, agents, and volunteers.
v) 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.
vi) Insurance is to be placed with California -admitted insurers with a Best' srating of no less than A: VII.
vii) Notice of cancellation or non -renewal must be received by CITY at least thirty days prior to such change.
c) Automobile Liability Insurance. Coverage shall be at least as broad as Insurance Services Office Automobile Liability form CA 00 01 with coverage for owned, hired, and non -owned automobiles Code 1 ( any auto) with a limit of not less than one million dollars ($ 1, 000,0) per accident.

Each of the following shall be included in the insurance coverage or added as an endorsement to the policy:
i)
ii)
CITY, its officers, employees, agents, and volunteers are to be covered as additional insureds.

Coverage shall allow and be endorsed to include a waiver of subrogation in favor of the CITY, its officers, employees, agents, and volunteers. d) Professional Liability. CONSULTANT, at CONSULTANT' Sown 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

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
than Two Million Dollars ($ 2, 000,00) per claim made and per policy aggregate covering the licensed professionals' errors and omissions, as follows:
i) Any deductible or self -insured retention shall not exceed $ 150, 00 per claim.
ii) Notice of cancellation, material change, or non - renewal 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 policy must contain a cross liability or severability of interest clause.
iv) 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 five ( 5) years after completion of the Agreement or the work.

The CITY shall have the right to exercise at the
CONSULTANT' Scost, 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.
e) 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. 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.
f) Notice of Reduction in Coverage. In the event that any coverage required under

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
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' Searliest possible opportunity and in no case later than five days after CONSULTANT is notified of the change in coverage.
g) 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' Sbreach.
10) Indemnification - CONSULTANT' S Responsibility
As to the CONSULTANT' S work hereunder, it is understood and agreed that ( a) CONSULTANT has the professional skills necessary to perform the work, (b) CITY relies upon the professional skills of CONSULTANT to perform the work in a skillful and professional manner, and ( c) CONSULTANT thus agrees to so perform.

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' Sprofession.

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, or on account of the performance or character of this work, except for any such claim arising out of the negligence or willful misconduct of the CITY, its officers, employees, agents, or volunteers.

It is understood that the duty of CONSULTANT to indemnify and hold harmless includes the duty to defend as set forth in Section 2778 of the California Civil Code. Acceptance of insurance certificates and endorsements required under this Agreement does not relieve CONSULTANT from liability under this indemnification and hold harmless clause.

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
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.
11) 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.
12) Business Licenses
CONSULTANT shall obtain and maintain a CITY of Lathrop Business License until all Agreement services are rendered and accepted by the CITY. 13) Termination
Either CITY or CONSULTANT may cancel this Agreement upon 30 days written notification to the other party. Upon termination, or completion of services under this Agreement, all information collected, work product and documents shall be delivered by CONSULTANT to CITY within ten ( 10) calendar days.
14) Funding
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.
15) 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.

To City: City of Lathrop
City Clerk
390 Towne Centre
Lathrop, CA 95330
Copy to: City of Lathrop

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
Department of Public Works
390 Towne Centre
Lathrop, CA 95330
MAIN: ( 209) 941- 7430
FAX: ( 209) 941- 7449
To Consultant:
16) Miscellaneous
Pacific Advanced Civil Engineering, Inc.
17520 Newhope Street, Suite 200
Fountain Valley, CA 92708
Phone: ( 714) 481- 7300
Fax: ( 714) 481- 7299
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.
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.

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
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 be deemed the property of the CITY. Upon CITY' s request, CONSULTANT shall allow CITY to inspect all such documents during the CONSULTANT' sregular 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)
m)
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.

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)
q)
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.

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' sfees, incurred or expended in connection with such action against the non -prevailing party.
17) 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

CITY OF LATHROP - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
CONSULTANT for any services prior to issuance of the Notice to Proceed. 18) Signatures
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 - PACIFIC ADVANCED CIVIL ENGINEERING, INC.

PROFESSIONAL ENGINEERING CONSULTING SERVICES FOR GROUNDWATER TREATMENT IMPROVEMENTS, CIP PW 20- 16
Approved as to Form:

Recommended for Approval:

Approved by:

Consultant:

City of Lathrop
City Attorney
Salvador Navarrete
City of Lathrop
Public Works Director/ City Engineer

3. 1_ 02. 6
Date
Brad Taylor
City of Lathrop
390 Towne Centre Drive
Lathrop, CA 95330
Date
Stephen J. Salvatore Date
City Manager
Pacific Advanced Civil Engineering, Inc.
17520 Newhope Street, Suite 200
Fountain Valley, CA 92708
Fed ID # 33- 0265538
Business License # NLB- 001293- 2025
Signature Date
Print Name and Title
Signature Date

MENNEN
Exhibit " A"

PROFESSIONAL ENGINEERING CONSULTING SERVICES PROPOSAL FOR THE

ADDITION OF TREATMENT

FOR PFAS AT THE LA
PREPARED FOR:

CITY OF LATHROP
390 Towne Centre Drive
Lathrop, CA 95330
PREPARED BY:

PACE Advanced Water Engineering
17520 Newhope Street, Suite 200
Fountain Valley, CA 92708
714. 481. 73001 pacewater. com
table of
contents
Cover Letter 1
Company Information
About PACE 2
Team Key Qualifications 3
Experience with City of Lathrop 4
Work History 5
Project Team
Organization Chart 14
Subconsultants 14
Key Team Member Qualifications 15
Resumes See Appendix
Methodology & Approach
Project Understanding 19
Approach Strategies 21
Scope of Services 24
Project Schedule 27
Fee Proposal 28
Appendix
Resumes
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

COVER LETTER
March 5, 2026
PAC Advanced Water
E
Engineering
Greg Gibson Sr. Civil Engineer
City of Lathrop Department of Public Works — 390 Towne Centre Drive, Lathrop, CA 95330 Re: Professional Engineering Consulting Services Proposal for the Addition of Treatment for PFAS at the LAWTF
Mr. Gibson,
PACE understands that per- and polyfluoroalkyl substances ( PFAS) have been detected in the City' s groundwater at concentrations exceeding State and Federal drinking water standards, and that timely, effective mitigation is critical to protecting public health and maintaining regulatory compliance. PACE has formed a team of highly specialized experts in water treatment and PFAS removal to meet the needs identified in the City' s RFP for the Louise Avenue Water Treatment
Facility. Our team is prepared to immediately advance this effort and offers the City the following key advantages:

Comprehensive and Integrated PFAS Treatment Approach
For the LAWTF PFAS treatment project, our team will leverage this institutional knowledge to prepare a thorough implementation - focused
preliminary design report. We will evaluate proven and innovative treatment technologies — including both conventional and nontraditional, cost- effective PFAS mitigation strategies — to identify solutions that integrate seamlessly with the existing facility. Our approach prioritizes operational reliability, lifecycle cost optimization, and constructability, while minimizing disruptions to ongoing plant operations.

Commitment to Reliability, Cost Efficiency, and Community Standards Consistent with our work throughout Lathrop, our goal is to enhance system reliability, reduce long- term costs, and ensure that new improvements align with the City' s high standards for infrastructure performance and aesthetics — particularly in areas serving high - end residential communities. We are committed to delivering a practical, forward - looking solution that supports the City' s water quality
objectives and long- term sustainability.

Proven Partnership with the City of Lathrop
Since the early 2000s, PACE has partnered with the City of Lathrop to deliver value- added stormwater, water, and wastewater infrastructure solutions on more than 40 projects. Our experience includes the design of dozens of pumping facilities, three phases of expansion at the Lathrop Consolidated Treatment Facility, and comprehensive master planning and design services for potable water, recycled water, and sanitary sewer infrastructure supporting the River Islands development. Through this long- standing relationship, we have developed a strong understanding of the City' sinfrastructure, operational priorities, regulatory environment, and growth objectives.

Our team is positioned for success under the leadership of Jacob Peterson, PE, who brings more than 20 years of experience in water treatment and has led the design of numerous well sites across California. We appreciate the opportunity to present our qualifications and look forward to continuing our partnership with the City of Lathrop on this important project. Should you have any questions, please do not hesitate to contact us.

Andy Komor, MS, PE
Sr. Vice President, Environmental Water Division / Principal / OA/ QC mobile: (714) 541- 8919 office: ( 714) 481- 7225 e- mail: andy@pacewater. com 17520 Newhope Street, Suite 200 - Fountain Valley, CA 92708

COMPANY INFORMATION 2

AOUT PACE
Pacific Advanced Civil Engineering, Inc. (PACE) is a specialized civil engineering firm headquartered in Fountain Valley, CA, with a regional office in Scottsdale, AZ, dedicated to providing advanced water engineering solutions. We offer a wide range of services related to water, wastewater, and stormwater management and water resource permitting and regulatory compliance to ensure projects are both economically viable and environmentally sustainable. Our approach focuses on maximizing value by creating multi - use infrastructure systems, cost- effective phasing strategies, and systems that include environmental, aesthetic, and recreational uses. PACE staff members include licensed professional engineers with PhDs, university instructors, and policymakers in the water resources arena.

PFAS/ Groundwater
Treatment Systems
Incorporated Year 1987 / State of California
Firm Type Environmental / Civil Engineering
100 Employees ( approx.) Firm.

Registered in over 25 States,
including Arizona, California
and New York
Office Locations
17250 Newhope Street, Ste 200, Fountain
Valley, CA 92078
8723 E. Via de Commercio, # A- 204
Scottsdale, AZ 85258
Our clients benefit from our experience with advanced water operations consulting, laboratory testing, pilot testing, and treatment facility design. PACE has successfully completed a variety of wellhead treatment and water quality improvement projects, including colored water treatment, corrosion and scaling control, taste and odor control, hydrogen sulfide removal, and removal of trace contaminants. Our background has led us to emphasize compatibility, constructability, costs, and long- term ease of operations for treatment systems and operational improvements.
6 With nearly 40 years of experience,
PACE is highly qualified in many areas of
water infrastructure and water quality
engineering. Our potable water expertise
includes, but is not limited to, the following:

Field evaluations, including on -site
water quality monitoring, process
improvement, systems troubleshooting,
and general operational assistance
Field and in- house water analysis and
bench- and pilot -scale testing capabilities
Source water and finished water quality
management and improvement
Surface and groundwater treatment
system design, construction, and
operation
Water distribution ( pipeline and pump
station) design and operation
Advanced knowledge of challenging
water chemistry, microbiology, and
hydraulics
Disinfection byproducts control and
contaminant removal
Color, taste, and odor control
Current PFAS Treatment Experience to
Support Project Objectives
PACE, using our in- house water quality laboratory and staff, have piloted a multitude of PFAS/ PFOS and other groundwater treatment technologies; including Ion Exchange, Activated Carbon and Engineered Proprietary Medias, as well as development of our own biological filtration process for specific contaminate removal in groundwater. In addition, PACE is currently performing design for PEAS treatment systems on six wells for Orange County Water District and developing a treatment strategy and design plans for the City of Vernon' sfour potable water wells.
4 A recent deployment of PACE' sin- house piloting equipment tested various alternatives for a series of groundwater wells, guiding the final design of the most effficient treatment alternative.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE COMPANY INFORMATION 3

TEAM KEY QUALIFICATIONS
RE -FILTER 1
01 Lessons Learned to Optimize Design
Lessons learned from numerous recent ion exchange,
GAC, and reverse osmosis projects ensures well -
functioning components, setup, and valve controls.
10'- 3*
to
VESSEL - 1
04 40'- 0"
10" ION EXCH GE
o 'NFL ENT
TYP.)
IE
18'- 0"
Constructability and Operability
Background Ensures Buildable and
Low -Cost Reliable Operation
Background in design - bid - build, design - build, CMAR, construction and operations of treatment facilities
to provide a unique insight into project designs to
improve constructability and minimize construction
cost and long- term maintenance costs.
02 In- house Piloting and Water Quality
Analysis Capabilities
In- house team customizes and deploys SCADA
capable demonstration pilot systems with series/
parallel configuration to evaluate multiple media
under varying flow and pressure conditions, with
PFAS compounds, including PFOA and PFOS, at
concentrations below 1. 0 ppt.

VESSEL -2
16" RAW WATER
8'- 0"
12390'±
16" ION EXCHANGE

EFFLUENT
05 Experience and Familiarity with
the City of Lathrop Processes,
Procedures and Staff
Communication and execution will follow established
protocols based on 20+ year project history with the
City ensuring seamless partnership.
03 Specialized Performance -Based
Specifications Process
Specifications are issued to prospective treatment
vessel vendors early in the design phase to secure
competitive pricing, performance guarantees, and firm
capital and operational cost proposals, enabling the
City to pre - purchase equipment and potentially reduce costs through bulk procurement.
34'- 0"
8'- O" 18'- 0"
123. 83' t
VESSEL - 3
Ow -
10" ION EX GE
FL ENT
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE COMPANY INFORMATION 4

ATHROP EXPERIENCE
Over 20 years experience designing Lathrop
water, sewer, and stormwater infrastructure.

Since the early 2000s, PACE has provided the City of Lathrop with value- added water, wastewater, and stormwater infrastructure and treatment solutions, on over 40 projects in total, including dozens of pumping facilities, three phases of expansion of the Lathrop Consolidated Treatment Facility, and master planning and design services to River Islands for the development' spotable water, recycled water, and sanitary sewer infrastructure. Our goal is to improve service reliability, lower costs, and ensure the new infrastructure aligns with the modern aesthetic of the area' s high - end residential homes.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

WORK HISTORY 5
RELEVA\ TEXPERIENCE
Orange County Water District PFAS WeII Treatment Orange County, CA

LEAD PF VESSELS
Client Info
Laurence Esguerra, Sr. Engineer
Orange County Water District
714) 378-330
lsguerra@ocwd. com
VESSEL. 1
Relevant Features
PFAS treatment at six well sites and
seven wells
Evaluation of alternative concepts
Pressure vessel treatment flows of
between 400 and 3, 500 gpm
Pre- treatment using bag filters, followed
by ion exchange ( IX) media in steel
pressure vessels
Improvements to existing facilities
The Orange County Water District ( OCWD) hired PACE to design wellhead treatment systems for six sites, encompassing seven Golden State Water Company wells located in the Cities of Stanton, Garden Grove, and Placentia.

The pressure vessel systems are designed to treat flows ranging from 400 to 3, 500 gallons per minute, tailored to each well' s
production capacity. Building on the findings of an OCWD pilot study, the treatment process includes pre - filtration using bag filters, followed by IX in steel pressure vessels to achieve the targeted water quality objectives.

PACE designed each system in alignment with the pilot study' recommendations while also developing alternative concept layouts to provide flexibility and options for stakeholder review.

PACE also coordinated with the IX media manufacturer to confirm the ability of the selected resin to treat perchlorate, an additional contaminant affecting one of the wells. With this confirmation, the affected well can now be added to production through one of the treatment systems if and when needed, improving overall supply flexibility. In addition to treatment system design, PACE prepared feasibility studies for two private pump - to -waste drain lines with proposed connections to the public storm drain system, ensuring effective and compliant management of waste streams during operations. Through this work, PACE supports OCWD and Golden State Water Company by advancing cost- effective, site - specific solutions that ensure regulatory compliance and improve long- term water supply reliability across the region.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 6
Golden State Water Imperial Plant PFAS Treatment Facility Norwalk, CA Relevant Features
1,25 gpm PFAS/FOA GAC filter system
for two groundwater wells
Demolition plans to remove existing air
stripper system
Construction and commissioning
assistance
The Golden State Water Imperial Plant treatment facility was completed as a design -build project with PACE serving as the Engineer of Record under the Metro Builders & Engineers Group. The project encompassed demolition of existing air stripping towers and construction of a new granular activated carbon ( GAC) filter system to remove per- and polyfluoroalkyl substances ( PFAS) such as perfluorooctanoic acid ( PFOA) from the groundwater produced by two on - site water wells. A pre- engineered packaged GAC system from Aqueous Vets was utilized, and PACE prepared demolition plans, grading and site detail plans, concrete foundation plans and details, mechanical interconnection piping plans and details, and mechanical design and plans for a pre- treatment basket strainer system and provided construction and commissioning assistance.

Client Info
Cameron Kosbab
Metro Builders & Engineers Group
949) 515- 4350
Cameron@metrobuilders. com
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 7
Liberty Utilities Monument Point Water Well Litchfield Park, AZ Relevant Features
Assessment of well design
Assessment of arsenic groundwater
treatment system
Design and selection of well pump
Design of treatment system
Value engineering of existing conceptual
design
Provisions for future addition of PFAS
treatment system
Due to rapid growth within their service area, Liberty Utilities has an immediated need to design and permit a new production well on an accelerated timeline. PACE was hired to perform an assessment and subsequent design of a 700 gpm production well and arsenic treatment system with provisions to add PFAS treatment. The system includes pretreatment, sodium hypochlorite disinfection, and stormwater management on a very compact site located within a residential neighborhood. In order to meet the project requirements, the design - build team proposed an approach utilizing multiple parallel paths of effort. Site grading and procurements will be started at risk while the design is being completed. The treated water will discharge directly into the existing distribution system, and backwash of the filters will be discharged to a cast - in -place concrete storage tank located below the treatment vessels and metered out to the sewer system.

Client Info
Sudheera Addepally
Liberty Utilities
602) 550- 1666
sudheera. addepally@libertyutilities. com
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWiF PACE WORK HISTORY 8
City of Vernon Source Water Quality Assessment and PFAS Treatment Design Vernon, CA Relevant Features
Water quality assessment of seven active
water wells
Manganese, iron, and PFAS treatment
system design
Master Plan concept approach to
prioritize the most effective treatment
options and streamline future treatment
design
The City of Vernon engaged PACE to evaluate water quality concerns at its seven active groundwater wells and design wellhead treatment systems to address elevated levels of iron, manganese, and per- and polyfluoroalkyl substances ( PFAS). PACE developed a Master Plan to identify the most effective and feasible treatment strategies, establish a standardized approach for future facilities, and provide the City with a dear roadmap to ensure regulatory compliance and long- term water reliability. The treatment design considers the unique challenge of managing multiple contaminants with different treatment requirements. Iron and manganese removal requires oxidation with free chlorine prior to filtration through Greensand media, while PFAS removal relies on ion exchange resins that are sensitive to free chlorine exposure. To address this, PACE' s design incorporates dechlorination steps with provisions for emergency off -spec discharges to protect the PFAS treatment media. In parallel, the team is evaluating the application of novel PFAS treatment media that are resistant to free chlorine but require California Division of Drinking Water ( DDW) approval before implementation.

PACE is also conducting pilot testing to confirm the performance of different media for the removal of site -specific contaminants. The pilot program evaluates the free chlorine demand required for effective iron and manganese oxidation, the level of dechlorination needed following the Greensand filters, and the impacts of free chlorine on both the ion exchange and novel medias being piloted. These efforts ensure that the full- scale treatment design is supported by site - specific data, providing confidence in treatment performance and long- term system reliability.

Client Info
Joanna Moreno, Civil Engineer
City of Vernon
323) 583- 8811
jmoreno@ci. vernon. ca. us
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 9
California -American Water Company Hexavalent Chromium Removal Los Angeles County, CA Relevant Features
Design of emerging contaminant
removal system for groundwater wells
Services performed indude all
structural, process, mechanical,
instrumentation and controls, and
electrical systems design
Pump upgrades and well site
improvements
Well capacities between 900 and 1, 600
gpm each
PACE is serving as part of the Design - Build team to design a hexavalent chromium removal system for six wells owned and operated by the California - American Water Company. Located in the East Pasadena and San Marino service areas, these wells have all been found to contain hexavalent chromium levels above the recently established Maximum Contaminant Level ( MCL). New strong base anion ( SBA) exchange resin removal facilities are being designed at four sites to remove hexavalent chromium from the well water, and the existing well pumps will be upgraded to provide sufficient pumping capacity through the SBA exchange system.

Client Info
Blake DePaola, Southern California VP of
Operations
Covenant Technical Solutions
310) 256- 8618
bdepaola@covenanttechnical. com
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 10
Huntington Beach Well 9 Treatment System Huntington Beach, CA Relevant Features
Well -head treatment
3, 000 gpm Granular Activated Carbon
GAC) filtration system
Pilot testing
Water quality analysis
Instrumentation and controls
programming
PACE provided multiple phases of project development, laboratory services, piloting, concept development, water treatment facility engineering, planning division graphics, and startup and operations support services on this innovative and unique treatment system for the City of Huntington Beach. Sophisticated desktop, bench - scale, pilot - scale, and full- scale demonstrations were provided for confirmation of the proposed biological treatment of reduced non - oxidized) drinking water quality constituents in the potable supply at Well 9 and other City wells. This first stage of work confirmed mechanisms for biological oxidation of hydrogen sulfide. This important and unique process was presented at several national conferences, including the American Water Works Association ( AWWA).

Design of the complete 3, 000 gpm ( 4. 3 MGD) treatment facility included six 10 - foot diameter biological activated carbon ( BAC) filtration vessels, with complete structural, mechanical, electrical, and controls integration for reliable and simple operation. A custom filtration control panel was tied into the City' scentralized Supervisory Control and Data Acquisition ( SCADA) system for fully automated controls. PACE provided all project bid documents, permitting, and coordination with Southern California Edison and assisted the City with the bid process and construction support services. Monthly backwashing was needed for this treatment system. A 200 -foot long 8 -inch PVC sewer pipeline was installed under Warner Avenue to facilitate monthly backwashing of the treatment system by diverting wastewater into the new sewer line during backwash operation. To minimize odor and costs, PACE designed the pipeline using a shallow sewer line connection with a drop bowl assembly to create a smoother flow to minimize splashing, resulting in decreased odor.

Client Info
Lily Hernandez Civil Assistant Engineer
City of Huntington Beach
714) 374- 5386
Ihernandez@surfcity- hb. org
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PEAS AT THE LAWTF PACE WORK HISTORY 11
City of Seal Beach Lampson Wellhead Treatment Seal Beach, CA Relevant Features
6 Four 12 -foot pressure vessels for 4, 000
gpm of treatment capacity
6 Pilot testing
6 Designed valves and piping for future
simultaneous removal of PFAS and H2S
6 Designed an invert siphon for backwash
discharge to the existing sewer system
The Lampson Water Well produces up to 4, 000 gpm and is one of the City of Seal Beach' sfour water wells. Historically high hydrogen sulfide ( H2S) concentration levels have caused the well to be underutilized, operating at low flow rates to avoid odor complaints. PACE was contracted by the City to evaluate treatment alternatives to efficiently reduce H2S concentration levels. On - site pilot testing was employed to evaluate the viability of a biological treatment process using granular activated carbon ( GAC) with and without plastic media and under various operating conditions. The pilot testing allowed for troubleshooting and refinement that led to selection of the biological activated carbon ( BAC) process. The final system design effectively removes H2S odors and reduces chlorine chemical dosage using four 12 -foot diameter steel pressure vessels, and also allows for future incorporation of PFAS treatment.

PACE also designed the electrical and controls system for the new equipment, including lighting. Additionally, since the filter vessels need periodic backwashing and the wastewater can be discharged to the existing sewer system, PACE designed an inverted sewer siphon to increase flow capacity through an existing choke point. Approximately 100 feet of 6 -inch pipeline was designed and located along an adjacent roadway. PACE also assisted the City in obtaining the DDW permit.

Client Info
Iris Lee, Public Works Director
City of Seal Beach
562) 431- 2527, ext. 1322
ilee@sealbeachca. gov
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 12
Sweetwater Authority Iron and Manganese WeII Treatment System National City, CA Relevant Features
Pilot testing guided filtration system
selection, demonstrated 89% removal of
iron and manganese in well
PS& Es of 1, 400 gpm greensand media
filtration treatment system and on -site
water quality analyzers
Drinking water permitting and approval
assistance
The Sweetwater Authority in southern San Diego County sought to remove color from the drinking water within the National City area, which was caused by iron and manganese in three major supply wells. PACE completed a 3 - month pilot project using five different treatment trains for oxidative filtration of iron and manganese. The train consisting of" Greensand Plus," or manganese dioxide - coated sand, achieved treatment consistently to less than 5 parts per billion. By removing iron particles about 0. 45 micrometers in size, accumulation in the drinking water system in National City will be substantially reduced. The system includes backwash recovery to save water loss from backwash. The full- scale design integrates the proposed final treatment system into the existing site with a new booster pump skid and on - site water quality analyzers. PACE also provided drinking water permitting and approval assistance.

FILTER PI
IF -21001
P2 )
FILTER 82
IP- 220C)
FILTER P3
IF -2303)
Pilo ) ( P2. 5 )
P204 ) ( P2C2 ) P2a3 ( P2ce ) ( P2oT ) ( F20B )
Client Info
Erick Del Bosque, Engineering Manager
Sweetwater Authority
619) 409- 6752
edelbosque@sweetwater. org
Io
P20E ) ( P2' 1 ) P216 ) ( P200C
P220 )

FLLTERME
F - 2400I
m
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE WORK HISTORY 13

GROUNDWATER /

FILTRATION TREATMENT

EXPERIENCE SUMMARY
California -
County, CA
American Water Company Hexavalent Chromium Removal — Los Angeles 1111111111111
Chumash Water Reclamation Facility Chlorine Disinfection Contact Time Title 22 Re - Rating Study — Santa Ynez, CA
City of Huntington Beach Well 9 — Huntington Beach, CA
City of Huntington Beach Wells 3, 6, and 8 — Huntington Beach, CA City of Lathrop Advanced Wastewater Treatment and Recycling Facility Expansion CT Study — Lathrop, CA
City of Riverside Garner B Treatment Plant Condition Assessment and PFOS-FOA Pilot System — Riverside, CA
City of Seal Beach Lampson Water Well and Sewer Siphon — Seal Beach, CA City of Somerton Potable Water Master Plan — Somerton, AZ City ofVernon Well Water Quality Assessment and PFAS Treatment — Vernon, CA Civita Water Recycling Facility CT Study — San Diego, CA Golden State Water Company Del Monte WeII Arsenic Removal — Claremont, CA • Golden State Water Imperial Plant PFAS-FOA Treatment Facility — Norwalk, CA Grand View Water Campus Reverse Osmosis Desalination Facility — Buckeye, AZ Grizzly Ranch Potable Water System — Portola, CA
Groundwater Iron and Manganese Filtration System South — Orange County, CA Liberty Utilities Monument Well and Treatment System — Litchfield Park, AZ Mesa Water District WeII Automation & Ozone Treatment — Costa Mesa, CA National City WeII Iron and Manganese Treatment System — National City, CA Orange County Water District / Golden State Water Wells PFAS Treatment Systems — Orange County, CA
Papago Butte Water District Improvements — Maricopa, AZ San Diego County Ion Exchange for a Series of Potable Water Wells - San Diego County, CA Santa Ana Country Club RO System — Orange County, CA •
Santa Margarita Water District Nichols Research Institute Corrosion Prevention Chemical Injection System — Santa Margarita CA
Santa Monica City Services Building Rainwater and WeII Treatment & Recycling — Santa Monica, CA
Santa Monica Advanced Water Treatment Facility — Santa Monica, CA • South Carolina Superfund Site Groundwater Remediation — Simpsonville, SC Tejon Mountain Village Surface Water Treatment Plant — Kern County, CA Town of Dateland Groundwater Treatment Plant Upgrade — Dateland, AZ Tulare Drainage District Water Treatment — Tulare Lake, CA Tuolumne Utilities District Sonora Regional Wastewater Treatment Plant CT Study — Sonora, CA
Water Treatment Facility for Iron and Manganese Removal — Lakeside, CA Wellhead Iron & Manganese Treatment — South Orange County, CA White Horse Ranch Owners Association Water System Improvements — Dewey, AZ C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE CL
PROJECT TEAM 14

ORGANIZATION CHART
PACE has assembled a highly experienced
team led by Jacob Peterson, PE, as Project
Manager. Drawing on his extensive background
in PFAS treatment projects, Jacob will direct a
multidisciplinary group of seasoned professionals,
including long- standing, trusted subconsultants.

With our proven expertise and collaborative
approach, PACE is committed to delivering the
project efficiently, on schedule, and within budget.

Detailed resumes for each member of the project
team are available in the Appendix section of this
proposal.

PROJECT

ENGINEER
Jason Ezell

PILOTING

SPECIALIST

PROJECT MANAGER
Jacob Peterson, PE
Tahir Maqbool, PhD

PERMITTING

SPECIALIST
Ashley Green, PhD
Subconsultants

STRUCTURAL ENGINEERING
PKAssociates provides a full range of structural
engineering services from conceptual design
through construction administration and special
structural inspections. Over the past 33 years,
they have delivered structural design expertise on
65+ new and expansion projects for wastewater
treatment system facilities.

SR. PROJECT

ENGINEER
Victoria Whitener, PhD, EIT
SR. INSTRUMENTATION

CONTROL SPEC( ALIST
Ernesto Camarena
SR. ELECTRICAL_

ENGINEER
Bashar Ishaq, PE, MBA, PMP
subconsultants

1. PKAssodates

3. ENGEO

4. Madtay& Songs

QA/C/ PRINCIPAL
Andy Komor, MS, PE

GEOTECHNICAL

ENGINEERS
Josef J. Tootle, PE, GE'
Randy Hildebrant, PE, GE'
SR. CAD

DESIGNER
Thomas Gutierrez

GEOTECHNICAL ENGINEERING
ENGEO is an award - winning firm providing
geotechnical, environmental, and construction
quality services for water, transportation,
infrastructure, and development projects. The firm
supports the design and construction of water and
wastewater facilities, tanks, pipelines, reservoirs,
pump stations, and flood control systems.

LAND

SURVEYOR
Lenny Martinez, PLS
Travis Pashon- Silva, PE'

STRUCTURAL

ENGINEERS
Jack Koeh er, PE, SE
James Appleyard, PE'

LAND SURVEYING
MacKay & Somps is a California civil engineering,
planning, and surveying firm specializing in land
development and public infrastructure. Since 1953,
the firm has supported projects from entitlements
and site design to utilities, master - planned
communities, and drone mapping, delivering costeffective solutions across the region.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE PROJECT TEAM 15

KEY PERSONNEL SUMMARY
Andy Komor, MS, PE and Jacob Peterson, PE onsite at
the City of Santa Monica Advanced Water Treatment facility.

NAME TITL EDUCATION,

YEARS OF E) FERENCE,
LICENSES/ CERTIF1CATIONS, &

AVAILABILITY
PACE

DESCRIPTION OF DUTIES RELEVANT EXPERIENCE
Jacob Peterson, PE
Project Manager
BS Civil Engineering
California Polytechnic University,
San Luis Obispo
21 Years of Experience
PE/ CA 79146
Availability 25%
Andy Komor, MS, PE
Principal / OA/ QC
MS Civil and Environmental
Engineering, Arizona State
University
25 Years of Experience
PE / CA 64928
Availability 20%
Victoria Whitener, PhD, EIT
Sr. Project Engineer
PhD Civil Engineering
University of California, Los
Angeles
10 Years of Experience

EIT / CA
NCEESID 15- 615- 42
Availability 30%
Main point of contact and
responsible for all project
management activities, including
organizing, staffing, directing,
controlling, and evaluating
required efforts, as well as
subconsultant management. He
will guide the design approach
and oversee all design activities
and lead engineering services
during construction.

Responsible for quality
assurance and quality control of
deliverables, engineering concept
review, value engineering, and
cost estimating.

Responsible for providing
senior -level technical oversight,
guiding process and design
decisions, reviewing engineering
deliverables, advising on
regulatory strategy, and
coordinating with clients and
multidisciplinary teams to
ensure effective, compliant, and
constructible solutions.

Orange County Water District / Golden State Water Company PFAS Well Treatment — Orange County, CA
City ofVernon Source Water Quality Assessment and Treatment Design — Vernon, CA California - American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
City of Seal Beach Lampson Well Treatment — Seal Beach, CA Sweetwater Authority Iron and Manganese Well Treatment System — National City, CA City of Riverside Garner B Well PFOA/FOS Treatment Pilot Testing — Riverside, CA Water Treatment Facility for Iron and Manganese Removal — Lakeside, CA Groundwater Iron and Manganese Filtration System — South Orange County, CA City of Huntington Beach Well 9 BAC Treatment System — Huntington Beach, CA City of Seal Beach Lampson Water Well Hydrogen Sulfide Removal — Seal Beach, CA Sweetwater Authority National City Well Iron and Manganese Treatment System — National City, CA
Grand View Water Campus RO PFAS Groundwater Treatment Facility — Buckeye, AZ City of Riverside Garner B Well PFOA/FOS Treatment Pilot Testing - Riverside, CA Walnut Canyon Reservoir and Lenain Water Treatment Plant Operations and Water Infrastructure — Anaheim, CA
Mesa Water District Wells Treatment System Upgrades — Costa Mesa, CA California - American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
Kalaeloa Seawater Desalination Facility — Kapolei, HI
Santa Monica Sustainable Water Infrastructure Project ( SWIP) Advanced Water Treatment Facility ( AWTF) — Santa Monica, CA
Sarival Water Reclamation Facility ( WRF) — Goodyear, AZ Pilot Testing of PFAS Removal from Surface Water— Lake Elsinore, CA Rapid Small -Scale Column Testing — Los Angeles County, CA Demonstration Scale Testing of DBP and Manganese Treatment & Control — Santa Barbara, CA
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE PROJECT TEAM 16

NAME TITLE EDUCATION,

YEARS OF EXPERIENCE,

LICENSES/ CERTIFICATIONS, &

AVAILABILITY
Jason Ezell
Project Engineer
BS Mechanical Engineering,
California State University,
Fullerton
9 Years of Experience
Availability 25%
Ashley Green, PhD
Permitting Specialist
PhD Civil & Environmental
Engineering, UC Irvine
5 Years of Experience
Availability 25%
Tahir Maqbool, PhD
Piloting Specialist
PhD Environmental Engineering,
Sejong University, South Korea
10 Years of Experience
Availability 25%
Bashar Ishaq, MBA, PE, PMP
Sr. Electrical Engineer
PMS Business Analytics, Hult
Intl. Business School
10 Years of Experience
PE / CA 24590
Availability 30%
Ernesto Camarena
Sr. Instrumentation & Controls
Specialist
AA Applied Science, Computer
Aided Drafting, ITT Technical
Institute
30+ Years of Experience
Availability 20%

DESCRIPTION OF DUTIES
Responsible for developing
detailed designs, preparing
calculations, drawings, and
specifications, coordinating
with multidisciplinary teams,
and supporting permitting and
construction to ensure compliant
and constructible solutions.

Responsible for obtaining
and managing permits,
coordinating with agencies,
preparing applications, and
ensuring regulatory compliance
throughout design and
construction.

Responsible for planning
and conducting pilot testing,
operating and monitoring
treatment systems, collecting
and analyzing performance data,
troubleshooting equipment, and
supporting design optimization
and regulatory compliance
efforts.

Responsible for evaluation of
existing electrical infrastructure,
load analysis, power distribution
design, motor control integration,
instrumentation and controls
coordination, preparation of plans
and specifications, construction
support, and ensuring compliance
with applicable codes, standards,
and regulatory requirements.

Responsible for field
instrumentation, PLCs, SCADA,
conceptual design exhibit
creation, start- up, commissioning
and training, and troubleshooting
and operations support.

RELEVANT EXPERIENCE
Water Treatment Facility for Iron and Manganese Filtration Removal — San Diego County, CA
River Islands Potable Water Booster Pump Station and Tank Storage Site — Lathrop, CA Advanced Wastewater Treatment and Recycling Facility Expansion — Lathrop, CA Central Lathrop Specific Plan ( CLSP) Pipeline System — Lathrop, CA River Islands Phase II Irrigation Pump Station Project — Lathrop, CA Design Services to Rehabilitate/ Replace Three Wastewater Pump Stations — Redondo Beach, CA
Expansion of the Lathrop Consolidated Treatment Facility — Lathrop, CA Great Park Stormwater Management Project - Irvine, CA
Manteca Sidestream Treatment and UV Rehabilitation Project — Manteca, CA Civita Water Recycling Facility - San Diego, CA
Poche Beach Pilot Project — San Clemente, CA
City of Vernon Source Water Quality Assessment and Treatment Design — Vernon, CA Hanford Wastewater Upgrades — Hanford, CA
Manteca Sidestream Treatment and UV Rehabilitation Project — Manteca, CA Sundance WRF Phase II Improvements — Buckeye, AZ
Water Quality Variation in Water Treatment Systems and Distribution Network Investigation Project — China
City of Seal Beach Lampson Wellhead Treatment and Sewer Siphon — Seal Beach, CA California -American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
City of Patterson Wastewater Treatment Plant Expansion — Patterson, CA Phase III Expansion of Lathrop Consolidated Treatment Plant — Lathrop, CA Vallejo Waste Treatment Plant System Upgrades Project for the Arc Flash and Coordination Study —Vallejo, CA
Hamilton Cove Sewer Lift Station Renovation — Avalon, AZ Voorhees Sewer Collection and Sewer Lift Station Upgrade — Manhattan Beach, CA Vernon Water Well 22 Water Line Improvements and Treatment System — Vernon, CA Huntington Beach Well 9 Wellhead Treatment System — Huntington Beach, CA Water Treatment Facility for Iron and Manganese Filtration Removal — San Diego County, CA
Dateland Groundwater Treatment Plant Pretreatment GAC and RO Upgrade — Dateland, AZ
City of Santa Monica Sustainable Water Infrastructure Project (SWIP) Advanced Water Recycling Facility — Santa Monica, CA
Santa Ana Country Club Pretreatment GAC and RO Filtration System — Santa Ana, CA C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE PROJECT TEAM 17

NAME TITLE EDUCATION,

YEARS OF EXPERIENCE,

LICENSES/ CERTIFICATIONS, &

AVAILABILITY
Tom Gutierrez
Sr. CAD Designer
AA Applied Science, Computer
Aided Drafting Technology, ITT
Technical Institute
30+ Years of Experience
Availability 20%

DESCRIPTION OF DUTIES
Responsible for developing
system layouts, assemblies,
fittings, valving, and pipe
materials and ratings, as well as
preparing site grading, drainage,
and utility plan/rofile designs.

RELEVANT EXPERIENCE
Golden State Water Imperial Plant PFAS-FOATreatment Facility— Norwalk, CA City of Huntington Beach Well 9Treatment System — Huntington Beach, CA Wellhead Iron & Manganese Treatment — South Orange County, CA Dateland Water Treatment Plant GAC Pretreatment Plant Upgrade — Dateland, AZ San Diego County Public Water System Wellhead Treatment System — San Diego, CA Santa Monica Sustainable Water Infrastructure Project ( SWIP) Advanced Water Treatment Facility - Santa Monica, CA
PK Associates
Jack Koehler, PE, SE
Sr. Structural Engineer
BS Civil Engineering, Arizona
State University
44 Years of Experience
SE/ CA S5526
Availability 25%
James Appleyard
Structural Engineer
BS Civil Engineering, Seattle
University
13 Years of Experience
PE/ AZ70374
Availability 40%
Responsible for designing,
analyzing, and reviewing
structural components,
ensuring compliance with codes
and standards, supporting
construction documents,
and coordinating with
multidisciplinary teams to ensure
safe, efficient, and durable
structures.

Responsible for developing and
evaluating structural designs,
preparing construction drawings
and specifications, reviewing
contractor submittals, and
ensuring structural integrity,
safety, and compliance with
applicable codes and project
requirements.

Liberty Utilities Monument Water Well — Litchfield Park, AZ Golden State Water Imperial Plant PFAS Treatment Facility — Norwalk, CA Cal Water Tank Mixing & Chloro — LA County, CA
Liberty Utilities Monument Water Well — Litchfield Park, AZ Golden State Water Imperial Plant PFAS Treatment Facility — Norwalk, CA Cal Water Tank Mixing & Chloro — LA County, CA
ENGEO
JosefJ. Tootle, PE, GE
Sr. Geotechnical Engineer
MS Civil Engineering, University
of California at Berkeley
PE / CA 58282
GE / CA 2677
31 Years of Experience
Availability 35%
Responsible for evaluating soil
and subsurface conditions,
conducting site investigations
and lab testing, analyzing
geotechnical data, providing
foundation and earthwork
recommendations, and
collaborating with design and
construction teams to ensure
safe, stable, and code - compliant
structures.

Water Storage Tanks and Sewer and Water Pump Stations, River Islands — Lathrop, CA 4 Million Gallon Water Reservoir at Newhall Ranch — Los Angeles County, CA Water Storage Tanks and Sewer and Water Pump Stations, River Islands — Lathrop, CA Central Delta Water Agency — Stockton, CA
College Area Sewer Rehabilitation — San Diego, CA
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE PROJECT TEAM 18

NAME TITLE EDUCATION,

YEARS OF EXPERIENCE,

LICENSES/ CERTIFICATIONS, &

AVAILABILITY
Hildebrant, PE, GE
Associate Geotechnical Engineer
MS Geotechnical Engineering,
UC Berkeley
PE / CA 79940
GE / CA 3090
16 Years of Experience
Availability 30%

DESCRIPTION OF DUTIES
Responsible for assisting in site
investigations and laboratory
testing, analyzing subsurface
conditions, and supporting
foundation and earthwork design,
while collaborating with senior
engineers and project teams to
ensure safe, stable, and code -
compliant solutions.

RELEVANT EXPERIENCE
Phase 1 Lake Circulation Pump Station — Lathrop, CA
Treasure Island Sub Phase 1A Geotechnical Services — San Francisco, CA Mare Island Sanitary Sewer Rehabilitation Phase II — Vallejo, CA Pasa Tiempo Golf Course 1 MG Below Grade Recycled Water Storage Tank — Santa Cruz, CA
MacKay & Somps
Josef J. Tootle, PE, GE
Sr. Geotechnical Engineer
MS Civil Engineering, University
of California at Berkeley
PE / CA 58282
GE / CA 2677
31 Years of Experience
Availability 35%
Randy Hildebrant, PE, GE
Associate Geotechnical Engineer
MS Geotechnical Engineering,
UC Berkeley
PE / CA 79940
GE / CA 3090
16 Years of Experience
Availability 30%
Responsible for evaluating soil
and subsurface conditions,
conducting site investigations
and lab testing, analyzing
geotechnical data, providing
foundation and earthwork
recommendations, and
collaborating with design and
construction teams to ensure
safe, stable, and code - compliant
structures.

Responsible for assisting in site
investigations and laboratory
testing, analyzing subsurface
conditions, and supporting
foundation and earthwork design,
while collaborating with senior
engineers and project teams to
ensure safe, stable, and code -
compliant solutions.

Water Storage Tanks and Sewer and Water Pump Stations, River Islands — Lathrop, CA 4 Million Gallon Water Reservoir at Newhall Ranch — Los Angeles County, CA Water Storage Tanks and Sewer and Water Pump Stations, River Islands — Lathrop, CA Central Delta Water Agency — Stockton, CA
College Area Sewer Rehabilitation — San Diego, CA
Phase 1 Lake Circulation Pump Station — Lathrop, CA
Treasure Island Sub Phase 1A Geotechnical Services— San Francisco, CA Mare Island Sanitary Sewer Rehabilitation Phase II — Vallejo, CA Pasa Tiempo Golf Course 1 MG Below Grade Recycled Water Storage Tank — Santa Cruz, CA
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

MEHTODOLOGY & APPROACH 19

PROJECT UNDERSTANDING

1. 9 PACE understands the City of Lathrop is seeking professional engineering services to design and support the implementation of PFAS treatment at the existing Louise Avenue Water Treatment Facility ( LAWTF) in response to detected per- and polyfluoroalkyl substances ( PFAS) in groundwater at concentrations exceeding drinking water standards. The federal drinking water Maximum Contaminant Levels ( MCLs) and Maximum Contaminant Level Goals ( MCLGs), along with the CA state notification levels ( NLs) and response levels ( RLs) are summarized in the following table.

PFOA
PFOS
PFHxS
PFNA

HFPO- DA
PFBS
PFHxA
Chemical Name
Perfluorooctanoic Acid
Perfluorooctane Sulfonic Acid
Perfluorohexane Sulfonic Acid
Perfluorononanoic Acid
GenX Chemicals
Perfluorobutanesulfonic Acid
Perfluorohexanoic Acid
Mixtures Containing two or more of PFHxS,
PFNA, HFPO- DA. & PFBS
Fed. MCLG
ppt)
ND
ND
10 10
10 Fed. MCI.
ppt)

4. 0

4. 0
10 10
10 1 ( unitless) 1 ( unitless)
Hazard Hazard
Index Index
CA NL
ppt)

4. 0

4. 0

3. 0
CA L
ppt

10. 0
40 10
500 5, 000
1, 000 10, 000
The Hazard Index is a tool that USEPA uses to understand health risk from chemical mixtures. The Hazard Index (HI) is made up of a sum of fractions. Each fraction compares the level of each PFAS measured in the water to the highest level determined to have risk of health effects.

ItUsing
data from the California State Water Board' s Safe Drinking Water Information System ( SDWIS), PACE evaluated seven years ( 2019-025) of City project well data to characterize PFAS occurrence in groundwater. Time -trend analyses were developed for constituents exceeding upcoming regulatory limits, specifically PFOS and PFHxS.

Com • • and
PFOA
PFOS
PFHxS
PFNA

HFPO- DA
PFBS
PFHxA
40 35
30 25
CA
20 O
a15
10 5
o
Avera • e (Minimum - Maximum), n!/l.

Well 6

1. 0 (0. 9-2.5)

7. 4 (3.- 13. 0)

2. 4 (0. 9-6.4)

1. 0 (0. 9-2.5)

0. 9 (0. 9-1.)

3. 6 (1. 7-6.2)

1. 0 (0. 9-2.5)
PFOS Levels 2019-025
Mel' 6
Well 7
Well 8
Well 10
Fed. MCL / CA NL = 4 ng/ L
CA RL 40 ng/ L
Well 7

1. (0. 9-2.5)

4. 7 (0. 9- 15. 0)

2. 0 (0. 9-5.7)

1. (0. 9-2.5)

0. 9 (0. 9-1.)

1. 8 (0. 9-5.2)

1. (0. 9-2.5)
IDLR= 2n /L'
O ...
f
Q Ol R tV N N N N N r5 RR
8 8 it 8 ! 8 ' it R 8
12 10
J
B
6 X
a 4
2 Well 8

1. (0. 9-2.5)

9. 1 (5. 1-7. 0)

2. 8 (0. 9-6.5)

1. (0. 9-2.5)

0. 9 (0. 9-1.)

3. 2 (1. 9-5.7)

1. (0. 9-2.5)
Well 10

1. 7 (0. 9- 10. 0)

8. 9 (0. 9- 37. 0)

2. 5 (0. 9-5.4)

1. 2 (0. 9-2.5)

0. 9 (0. 9-1.)

3. 2 (0. 9- 15. 0)

1. 2 (0. 9-2.5)
PFHxS Levels 2019-025

N N N N N N N N N N N
Well 6
Well 7
Well 8
Well 10
Fed. Ma. / CA RL . 10 ng/ L
CA NL. 3 ng/ L
4 C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE The LAWTF, originally constructed approximately ten years ago for arsenic removal from five municipal supply wells ( Wells 6, 7, 8, 9, and 10), has a design capacity of 6, 250 gpm. Based on prior evaluations, including the 2020 PFAS Treatment Alternatives Evaluation, the 2022 Centralized Treatment Feasibility Study, and subsequent technical memoranda, a centralized PFAS treatment system at LAWTF has been identified as the preferred alternative.

At a design flow rate of 6, 250 gpm, if Ion Exchange ( IX) is selected as the preferred treatment method, there will need to be four trains of two vessels ( lead - lag operation) using 12 - foot diameter vessels each. Each train has a capacity of 2, 000 gpm based on a typical hydraulic loading rate of 6 to 18 gpm/ sf.

The following rendering shows a preliminary layout of an IX PFAS treatment system that includes booster pumps to account for the additional headloss of the system and cartridge filters to prevent suspended solids from building up on the expensive media.

CI
Bposter
Pump Stgt`"
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWRF MEHTODOLOGY & APPROACH 21

APPROACH STRATEGIES
9 Experience - Driven Design Optimization
PACE' slongstanding relationship with the operators who build and manage our treatment facilities has continually strengthened our design approach. Through years of collaboration with professionals responsible for day- to- day operations, maintenance, and performance optimization, we have incorporated real - world operational insight directly into our engineering process. This experience has resulted in treatment systems that are more robust, maintainable, and operationally efficient. Lessons learned from past operability reviews and long- term facility performance have been institutionalized within our design standards, ensuring that each project benefits from practical, field- tested knowledge rather than theory alone. 9 Early Performance Specification and Procurement Strategy PACE has the ability to incorporate performance - based specifications early in design to enhance project cost control, schedule reliability, and design flexibility. During preliminary design milestones, PACE identifies key process and equipment design criteria, such as flow rates, contaminant concentrations, and performance requirements, to develop comprehensive performance specifications well in advance of final design.

This early definition of equipment needs enables the client to pursue competitive pricing that can be locked in and held for a defined duration, reducing exposure to market fluctuations. It also provides the opportunity to pre -purchase long -lead equipment, ensuring critical components are secured before they impact the construction schedule.

By strategically advancing performance specifications early in the project, PACE helps clients de - risk procurement, accelerate delivery, and optimize design integration — all while maintaining flexibility to align final design details with the selected equipment supplier' srequirements.

Hydraulic Considerations and Pumping Strategy
Based on our experience designing PFAS treatment facilities, the addition of cartridge filtration and ion exchange ( IX) media vessels will introduce a meaningful increase in system headloss— particularly as media approaches the end of its operational life and prefilters require replacement. Under peak fouling conditions, the total incremental head across the PFAS treatment process can approach approximately 80 feet between the cartridge filters and media vessels.

Given this anticipated head requirement, the project must evaluate whether the existing well pumps have sufficient available head to reliably operate under worst - case treatment conditions. If not, supplemental pumping capacity will be required to maintain consistent treatment performance.

Because five wells feed the LAWTF treatment process, a dedicated booster pump station serving the PFAS system is likely to provide the most reliable and operationally flexible solution. A booster configuration allows the City to:

Preserve the existing well pump configuration
Maintain consistent flow through the
treatment system as media fouls
Provide operational redundancy and future
expandability
Avoid piecemeal pump replacements across
multiple wells
Optimize energy efficiency and control strategy
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE MEHTODOLOGY & APPROACH 22
VOISII
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF Our approach will include detailed hydraulic modeling to confirm dynamic head requirements under clean - bed and fouled - bed conditions, evaluate pump curves against existing well performance, and identify the most cost- effective and operationally sound pumping strategy.

The following hydraulic profile illustrates pressure losses across a similar PFAS treatment facility designed by PACE utilizing IX media. As shown, headloss through cartridge filtration and lead/ lag IX vessels was carefully evaluated to ensure reliable performance under both clean and end - of -run conditions. This same level of rigor will be applied to the LAWTF PFAS treatment addition to ensure long- term hydraulic reliability and regulatory compliance.

MI- --,
RPR ,
NOTE!:

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FA, AAML4
AI
rmr
wcur
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Mr - r- _____ LAD r
tE! V.Llfw: `
WSW r:

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PLAtO
S

MO TO MSIE
L. VESSEL
I.A16 AAA, AWN PA PeAVA1. 1.2COCLA• 10. 4.T ROM*,
NOWA nt wow TO i00, 491.

LEGEND

CLAIR HYDRAAIC PROFILE
rwAM«. mw
AV. AASTRUCTA
POOVIED 11. 1115W031- 6 'AM TOMER WAIL
NNW MAREN1P101. 1..
aal aaY
S
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Media Performance Validation Through Pilot and Bench -Scale Testing Piloting will be conducted to establish site - specific design criteria and validate media performance under actual groundwater conditions prior to full- scale implementation. The pilot study will reduce design uncertainty, refine hydraulic loading parameters, and support defensible lifecycle cost comparisons for this major infrastructure investment.

PACE proposes to evaluate both ion exchange ( IX) media and granular activated carbon ( GAC) for PFAS removal in order to evaluate both PACE' ssuggested treatment method ( IX) and GAC. Comparative testing will allow direct assessment of breakthrough behavior, media utilization efficiency, empty bed contact time EBCT) requirements, pressure loss development, and projected media replacement intervals.

The pilot system will include upstream cartridge filtration to protect IX media from particulate fouling and ensure representative full- scale performance. Testing will be conducted using PACE' s advanced pilot platform with interchangeable columns to enable parallel evaluation of media types under controlled hydraulic conditions.

PACE
MEHTODOLOGY & APPROACH 23
Ion exchange media generally exhibit higher PFAS capacity and shorter required EBCTs compared to GAC, resulting in smaller vessel sizing and reduced site footprint. While IX media costs per unit volume are typically higher, improved capacity and reduced infrastructure requirements can offset capital and O&M expenditures over the life of the facility. Conversely, GAC performance may be influenced by competitive adsorption from co- occurring organic matter and background ions, potentially impacting media run length.

The pilot will quantify these effects under actual water quality conditions.

Media replacement frequency is anticipated to be a primary lifecycle cost driver for either technology and will be rigorously evaluated through monitored breakthrough curves and loading rate analysis.

The pilot may be configured to simulate PFAS treatment either upstream of the existing arsenic treatment system, consistent with prior planning assumptions, or downstream of arsenic treatment. An upstream configuration avoids oxidant exposure to adsorption media, which would otherwise require dechlorination and introduce additional operational complexity.

However, locating treatment upstream may also increase the potential for competitive adsorption and media fouling. Inorganic constituents such as iron, manganese, and calcium can form precipitates that deposit on the adsorbent surface and reduce effective capacity. Competitive adsorption is particularly relevant in drinking water applications, where target PFAS compounds coexist with other adsorbable constituents. The extent of competition depends on the relative adsorption affinity of competing species, their concentrations, and the type of media utilized. Even though this is groundwater without high concentrations of typically competitive chemicals, it should be considered that any competitive adsorption will reduce media life.

Although the source groundwater contains arsenic, dissolved ( aqueous) arsenic is not strongly adsorbed by GAC or typical PFAS- selective IX media. In contrast, particulate or precipitated arsenic species may contribute to fouling if present.

Pilot results will be used to establish full- scale design parameters including EBCT, vessel sizing, hydraulic loading rates, anticipated run length, and preliminary lifecycle cost projections to support final technology selection.

Proactive Agency Coordination and Permitting Management PACE takes a structured, proactive approach to regulatory coordination that ensures efficient approvals and consistent compliance across multiple jurisdictions. PACE will coordinate directly with the Division of Drinking Water ( DDW) to present the project scope, permitting pathway, and preliminary design at the 60% milestone. PACE will submit formal plans and attend review meetings at the 60%, 90%, and 100% design stages to maintain alignment with DDW reviewers. A draft Operations, Maintenance, and Monitoring Plan ( OMMP) will also be prepared at 60% design to allow early regulatory input on operational and reporting expectations. This approach minimizes late -stage comments, avoids redesign, and expedites permit issuance.

PACE' sregulatory approach emphasizes early agency coordination, clear documentation, and proactive issue resolution. By engaging regulators after the 60% design milestone — when the project' stechnical foundation is solid yet adaptable — PACE ensures that each system design advances efficiently through review and approval, minimizing delays, reducing rework, and delivering fully compliant, ready -to - construct solutions for Liberty Utilities.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE MEHTODOLOGY & APPROACH 24

SCOPE OF SERVICES
Task Series 1
Task 1.— Pilot Study
Task 1.— Pilot Study
Test Plan
Task 1.2 — Pilot System
Installation and Startup
Task 1.3 — Pilot
Operation and Data
Collection
Task 1.4 —
Demobilization
Task 1.. 5 — Technical
Memorandum and
Presentation
Task 1. 2 — Basis of
Design Report
PACE will mobilize, install, and operate a pilot system to establish full- scale design criteria and evaluate operational requirements, including comparative media replacement frequency for GAC and IX. The pilot will assess GAC and IX performance under site -specific water quality conditions upstream of the existing arsenic treatment system.

For this work, PACE will mobilize its advanced pilot skid to the project site. The skid has an approximate 9 ft by 6 ft footprint and is designed for continuous 24/ 7, largely unattended operation, except for manual filter backwash. The system includes four parallel, interchangeable - diameter contactor columns; upstream cartridge filters; upstream pressure transmitters; continuous flow monitoring; backwash capability; and online temperature, turbidity, and pH monitoring with PLC - based automation, data acquisition, remote data access, and customizable alarm functionality.

Although not explicitly required, PACE will prepare an internal Pilot Study Test Plan, which will be shared with the City, to define operational parameters, monitoring protocols, and performance criteria in advance of testing to ensure defensible results. Test Plan will establish target EBCTs, service flow and surface loading rates, backwash trigger criteria, sampling locations and analytical parameters, and data evaluation and QA/C procedures. RSSCT results conducted by Calgon Carbon and reported by EKI for the City 2020) will be used to size pilot columns and set flow rates to achieve media breakthrough within the pilot duration while avoiding channeling through the media.

PACE will mobilize and deploy its advanced pilot skid from the PACE Environmental Water Laboratory to the project site. PACE will perform all startup testing flow testing to ensure that the instruments are functioning properly and connections do not leak.

It is assumed that required storm drain connection, raw water connection, potable water connection ( for pilot startup and flow testing), and 110V power will be provided by the City.

The primary analytical parameters for the study will be regulated PFAS compounds. Operation will continue until effluent concentrations of regulated PFAS compounds ( PFOA, PFOS, PFNA, PFHxS, GenX, and Hazard Index PFAS) achieve their respective MCLs, or for a maximum of six months, whichever occurs first. Pilot extension, if authorized by the City, will be performed for additional compensation.

PACE will perform site visits at two- week intervals to verify instrumentation performance and inspect for leaks. Between visits, the system will be monitored remotely; response to unexpected issues will include coordination with City staff or site mobilization by PACE, as warranted by issue severity.

PACE assumes that routine water sampling will be performed by City staff to minimize pilot costs. PACE will provide sampling protocols, laboratory -supplied bottles, and shipping materials, as required, along with alerts for when water samples shall be taken based on bed volumes treated. It is assumed that laboratory costs will be covered by the City.

Upon completion of testing, PACE will disconnect, remove, and transport the pilot skid back to the PACE Environmental Water Laboratory.

PACE will prepare a Technical Memorandum summarizing pilot operating conditions, analytical results, media performance comparisons, and projected full- scale design criteria. PACE will also meet with the City to present the findings and recommendations in order to proceed with the design phase of the project.

Deliverable: Pilot Study Technical Memorandum
PACE will prepare a Basis of Design ( BOD) report documenting the design criteria, assumptions, and selected treatment approach for the project. The BOD will incorporate findings from the pilot study, including observed treatment performance, operational considerations, and key design parameters derived from pilot results.

Deliverable: Basis of Design Report
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE MEHTODOLOGY & APPROACH 25
Task Series 2
Task 2.1— Survey
Task 2. — Geotechnical
Investigation
Task 2. 3 — 30% Design
Task 2. 4 — 60% Design
Task 2. 5 — 90% Design
Task 2. 6 — 100% ( Final)
Design
PACE will hire a subconsultant to perform a topographic survey of the treatment site.

PACE will hire a subconsultant to provide a geotechnical investigation for each of the sites consisting of drilling, logging, and sampling small - diameter borings to evaluate the soil and groundwater conditions. Laboratory testing will be performed on representative samples and a geotechnical report will be prepared providing recommendations for design and construction of the project.

Based on the selected treatment technology, PACE will prepare 30% design level documents for City input, review, and comment. The package will include updated General Arrangement drawings, PFDs, P&IDs, along with site plans, mechanical plan views, and electrical single line diagrams.

A draft Performance Specification will be prepared for the pressure vessels ( and pre -filters if desired) along with the valve tree. This will be Issued for Review so that the City may comment on it. Performance Specifications may be used to solicit competitive bids from several equipment suppliers prior to a design going to official Contractor bid. This will allow the City to do one of the following:

Lock in the cost for the major piece of equipment with the Contractor being required to purchase the equipment at the negotiated price, or
Pre - purchase the vessels so that fabrication of the vessels may begin prior to completion of the design and subsequent Contractor Bidding, allowing for the long lead time item of the project to begin production prior to the bidding phase PACE will attend one meeting with the City and its representatives to go over the review comments on the 30% design package.

It is expected this meeting will last no longer than 4 hours and will occur approximately 2- 3 weeks after the 30% design package is submitted.

Deliverable: 30% Design Package
PACE will prepare 60% design level documents for Liberty review and comment. The package will include updated General Arrangement Drawings, PFDs, P&IDs, mechanical plans, electrical single line diagrams, along with mechanical sections, structural plan views, and electrical power and control plans.

Performance Specifications may be finalized during the 60% design preparation for solicitation of bids from equipment suppliers, if desired by the City. It is anticipated that the pressure vessel supplier will be selected after the 60% design submittal.

PACE will attend one meeting with the City and its representatives to go over the review comments on the 90% design package.

It is expected this meeting will last no longer than 4 hours and will occur approximately 2- 3 weeks after the 90% design package is submitted.

Deliverable: 60% Design Package
PACE will prepare 90% design level documents for City review and comment. The package will include updated GA drawings, PFDs, P&IDs, mechanical plans, electrical single line diagrams, mechanical sections, structural plan views, electrical power and control plans. In addition to the updated drawings, details will be provided for civil, mechanical, electrical, and structural disciplines.

Complete draft specifications will be submitted for City review and comment.

PACE will attend one meeting with the City and its representatives to go over the review comments on the 90% design package.

It is expected this meeting will last no longer than 4 hours and will occur approximately 2- 3 weeks after the 90% design package is submitted.

Deliverable: 90% Design Package
PACE will submit a finalized plan set for civil. Mechanical, structural, electrical, and P&ID disciplines. Complete final specifications will also be submitted.

PACE will attend one meeting with the City and its representatives to go over the 100% design package. It is expected this meeting will last no longer than 4 hours and will occur approximately 2 - 3 weeks after the 100% design package is submitted.

Deliverable: 100% Final Design Package
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE MEHTODOLOGY & APPROACH 26
Task Series 3
Task 3.1— Bidding
Assistance
PACE will provide bidding phase support, including responding to bidder questions related to the technical aspects of the design and issuing addenda as necessary. PACE will provide a consolidated set of plans and specifications.

Task Series 4
Task 4.1— Engineering
Support Services During
Construction
PACE will provide construction phase support, including review of shop drawings and equipment submittals to confirm conformance with the design intent, and responses to contractor RFIs. PACE will also participate in bi- weekly coordination calls to discuss construction progress and interface with the on -site construction manager.

Task Series 5
Task 5.1— Permitting
Task 5. 2 — Regulatory
Compliance
It is anticipated that Mechanical, Structural, Grading/ Paving, and Encroachment permits may be required from the local Authority Having Jurisdiction ( AHJ).

PACE will coordinate with the City and applicable agencies and prepare and submit required permit applications and supporting documentation. It is assumed that the City will serve as the permit applicant where required and will pay all permit application and agency review fees.

It is assumed that the California Environmental Quality Act ( CEQA) permit will not be needed for this project.

Early engagement with the SWRCB Division of Drinking Water ( DDW) is crucial to ensuring major comments are not received after design is complete. For this reason, PACE intends to engage the DDW after the 60% design deliverable. Typically, this follows approximately 2 weeks after the City has completed the internal review so that any major issues may be incorporated. Plans will then be sent to the permitting agency, and a review meeting is set to discuss the project and any comments received.

PACE intends to provide a plan submittal after the 60%, 90% and 100% design submittal and will be available to attend one meeting with DDW to discuss the project. For the 60% design submittal a draft Operation Maintenance and Monitoring Plan OMMP) will be prepared and updated for subsequent submittals.

It is assumed that the City will be able to assist in setting up these meetings with the applicable regulatory agency since there are likely contacts in place for reporting purposes for each site.

Deliverable: Operation Maintenance and Monitoring Plan (OMMP) Task Series 6
Task 6.1— Final
Construction Report
Task 6. 2 — Record
Drawings
Using information collected during construction, start- up, and commissioning of the PFAS treatment addition, PACE will prepare a Final Construction Report documenting installation, operational verification, and initial performance of the treatment system based on information received from the Contractor and observations while on -site. The report will summarize construction activities, major equipment installed, and any field modifications from the permitted design documents. Documentation will include confirmation of media installation, integration with existing well and electrical systems, and verification that installation is consistent with the approved plans.

The report will also summarize start- up and commissioning activities, and initial performance testing results, including system flow rates, pressure drop, and initial effluent PFAS sampling data. A discussion of operator training, O&M manual delivery, and coordination with regulatory agencies will be included. Final as -built drawings, commissioning checklists, and laboratory results will be appended as supporting documentation.

Deliverable: Final Construction Report
PACE will prepare Record Drawings based on contractor - provided as - built documentation. It is assumed that the Contractor will clearly identify and document all deviations from the issued - for -construction drawings that occurred during construction.

Record Drawings will reflect the information provided in the Contractor' sas- builts and other available project documentation. The Record Drawings will be stamped by PACE with the mutual understanding that they are based on and limited to the accuracy and completeness of information furnished by the Contractor.

Deliverable: Record Drawings
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

PROJECT SCHEDULE
TASK # DESCRIPTION WKS START - END
2026

JAN FEB MAR APR MAY MD AUG SEP OCT NOV
Task 1- Pilot Study / Basis of Design Report

1. Pilot Study

1. 2 Basis of Design Report
30 4/ 27/6 -11 / 23/6
8 11/ 23/6 -1 / 18/ 27
Task 2 - Plans, Specifications, and Estimates

2. 1 Survey

2. Geotech n ica I Investigation

2. 3. 1 30% Design

2. 3. Meeting with Owner ( 30%)

2. 4. 1 60% Design

2. 4. Meeting with Owner ( 60%)

2. 5. 1 90% Design

2. 5. Meeting with Owner ( 90%)

2. 6 Final Design

3. 1 Bidding Assistance
Task 4 - Engineering Sup 1
4 1/8/ 27- 2/ 15/7
8 1/8/ 27 - 3/ 15/ 27
14 11/ 23/6 - 3/ 1/ 27
2 3/ 1/ 27 - 3/ 15/ 27
14 3/ 15/ 27 - 6/ 21/7
2 6/ 21/7 - 7/ 5/ 27
12 7/ 5/ 27 - 9/ 27/7
2 9/ 27/7 -10/1/ 27
12 10/1/ 27 -1 / 3/ 28
4 1/ 3/ 28 -1/ 31/ 28
rt Services Dudn

4. 1 Construction Support Services

5. 1 Permitting

5. 2 Regulatory Compliance
onshvcnon
45 1/ 31/ 28 - 12/1/ 28
26 75
7/ 5/ 27 -1 / 3/ 28
7/ 5/ 27 -12/1 /28
Task 6 - Final PFAS Construction Report and Record Drawings

6. 1 Final Construction Report

6. 2 Record Drawings
4 11/ 27/8 -12/ 25/8
4 11/ 27/8 -12/ 25/8
Note: Design may start before piloting is completed as long as GACor IX treatment technology is selected. The specific media can still be determined later, but the type ofmedia will effect the design. 1 C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITIC a
r4 i ....

FEE PROPOSAL
Item No. Work Item Description
1 Pilot Study / Basis of Design Report
Principal
324
12 Sr. Project
Manager/ S.

Consulting Engr.
36 Sr. Electrical
Engineer
0 Esti
Project
Engineer
Design
Engr. II
Elec. Engr
140

1. Pilot Study 8 24 80

1. 2
2 2. 1
Basis of Des i • n Re • ort
Plans, Specifications and Estimates
Survey
4 84
2 12
204
6 160
60 488
12 2. Geotechnical Investigation 2 6 12

2. 3 30% Design 24 56 40 124

2. 4 60% Design 32 64 60 140

2. 5 90% Design 16 40 40 120

2. 6 Final Design 8 32 20 80
3 Bidding Assitance 4 12 8 20

3. 1 Biddin• Assitance 4 12 8 20
4 4. 1
5 Engineering Support Services During Constructi
En. ineerin• Su• sort Services Durin• Construction
Permitting
80 80
20 124
124
64 128
128
0 176
176
120

5. 1 Permitting 8 24 40

5. 2
6 Re • ulato Com • liance
Final PFAS Construction Report & Record Drawi
12 20
40 44 28
80 72

6. 1 Final Construction Report 16 32 16 52

6. 2 Record Drawings 4 12 12 20
TOTALS 220 484 ' 324 1016
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWRF Appendix

R S, VES

APPENDIX // RESUMES
Jacob
Peterson, PE

EDUCATION
BS Civil Engineering, California Polytechnic University, San Luis Obispo — 2008

YEARS OF EXPERIENCE
21 Years
Joined PACE in 2004

REGISTRATIONS
Professional Engineer/ CA 79146
Certified Water Efficiency Professional / 128195 ( inactive)

PUBLICATIONS
Peterson, J. D., Murphy, R.., lin, Y., Wang, L., Nessl, M. B., Ikehata, K. (2011) Health effects associated with wastewater treatment, reuse, and disposal. Water Environment Research 83: 10,853- 1875.
project
manacer
Jacob Peterson has civil and environmental engineering experience spanning back to 2004. He has performed engineering design and support in several areas including water treatment, pump stations, water conveyance and distribution, and surveying services. Mr. Peterson is adept at providing comprehensive civil and mechanical designs that are inventive, cost- effective, and practical and is experienced in construction services on various water resource systems. With his combined knowledge of water resource disciplines, he has been effective in the design, construction oversight, and operational support of numerous projects, including multi -functioning systems incorporating mechanical and biological systems and processes. He offers expertise in a multitude of groundwater treatment processes, including granular activated carbon ( GAC) and biological activated carbon ( BAC) systems, ion exchange, reverse osmosis ( RO), and other types of filtration systems, and has led field pilot testing of several technologies to refine equipping, design, and operations procedures.

RELATED EXPERIENCE
Orange County Water District / Golden State Water Company PFAS WeII Treatment — Orange County, CA
Mr. Peterson is serving as the Engineer of Record for the well treatment design for six water well sites, consisting of up to eight wells, for the Golden State Water Company. Three sites are within the City of Stanton, two sites are within the City of Garden Grove, and one site is within the City of Placentia. The pressure vessel treatment system will treat flows between 400 and 3, 500 gallons per minute. OCWD previously completed a pilot study and determined that the treatment process will consist of pre- treatment using bag filters, followed by ion exchange ( IX) media in steel pressure vessels. Based on the design well capacity at each site, the treatment system will be sized and designed to meet the treatment objective consistent with OCWD' s pilot study recommendations, while providing alternative concept plans for stakeholders to review. PACE will also prepare feasibility studies for two separate private pump -to -waste drain lines to connect to the existing public storm drain system.

City of Vernon Source Water Quality Assessment and PFAS Treatment Design — Vernon, CA Mr. Peterson is serving as the Sr. Project Engineer to evaluate water quality concerns at the City' sseven active well locations and design a treatment system to reduce levels of manganese, iron, and per- and polyfluoroalkyl substances ( PFAS). As part of the assessment, PACE will also develop a Master Plan approach for treatment systems at all seven wells to ascertain the most effective and feasible treatment options and streamline future treatment designs for the remaining wells.

California -American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
Mr. Peterson is serving as Project Manager to design a hexavalent chromium removal system for six wells owned and operated by the California - American Water Company. Located in the East Pasadena and San Marino service areas, these wells have all been found to contain hexavalent chromium levels above the recently established Maximum Contaminant Level ( MCL). New strong base anion ( SBA) exchange resin removal facilities are being designed at four sites to remove hexavalent chromium from the well water, and the existing well pumps will be upgraded to provide sufficient pumping capacity through the SBA exchange system.

City of Seal Beach Lampson WeII Treatment and Sewer Siphon — Seal Beach, CA The Lampson Water Well produces up to 4, 000 gpm and is one of the City of Seal Beach' sfour water wells.

Historically high hydrogen sulfide ( H2S) concentration levels have caused the well to be underutilized, operating at low flow rates to avoid odor complaints. Mr. Peterson served as the Sr. Project Engineer for the pilot studies to evaluate the viability of a biological treatment process using granular activated carbon C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
PROJECT MANAGER - Jacob Peterson, PE
RELATED EXPERIENCE CONT. GAC) with and without plastic media and under various operating conditions. The pilot testing allowed for troubleshooting and refinement that led to selection of the biological activated carbon ( BAC) process. The final system design effectively removes H2S odors and reduces chlorine chemical dosage using four 12 - foot diameter steel pressure vessels, and also allows for future incorporation of PFAS treatment. Additionally, since the filter vessels need periodic backwashing and the wastewater can be discharged to the existing sewer system, PACE designed an inverted sewer siphon to increase flow capacity through an existing choke point. Approximately 100 feet of 6 - inch pipeline was designed and located along an adjacent roadway.

Sweetwater Authority Iron and Manganese WeII Treatment System — National City, CA The Sweetwater Authority in southern San Diego County sought to remove color from the drinking water within the National City area, which was caused by iron and manganese in three major supply wells. Mr.

Peterson served as the Sr. Project Engineer for the 3 - month pilot project using five different treatment trains for oxidative filtration of iron and manganese. The train consisting of" Greensand Plus," or manganese dioxide - coated sand, achieved treatment consistently to less than 5 parts per billion. By removing iron particles about

0. 45 micrometers in size, accumulation in the drinking water system in National City will be substantially reduced. The system includes backwash recovery to save water loss from backwash. The full- scale design integrates the proposed final treatment system into the existing site with a new booster pump skid and on - site water quality analyzers. PACE also provided drinking water permitting and approval assistance.

City of Riverside Garner B Well PFOA/FOS Treatment Pilot Testing — Riverside, CA Mr. Peterson served as the Sr. Project Engineer to perform a condition assessment of the out -of -service GAC treatment system to determine the feasibility of rehabilitating the system into a full- scale pilot system to treat PFOA/FOS. The pilot study evaluated potential treatment alternatives and enhancements, including co -precipitation filtration and biological treatment, that could lower capital costs and/ or annual operations and maintenance costs compared to typical treatment methods. Upon determining that the rehabilitation was feasible, PACE prepared improvement plans and specifications to reactivate the treatment system, designed modifications to accommodate either GAC or ion exchange media, and specified components to be replaced, including the flow meter and tank lining.

Water Treatment Facility for Iron and Manganese Removal — Lakeside, CA As the Sr. Project Engineer, Mr. Peterson designed a groundwater treatment facility that treats 99% of the client' s water supply to meet U. S. Environmental Protection Agency ( EPA) primary and secondary drinking water standards for iron, manganese, arsenic, and uranium. The 500 gpm iron and manganese filtration system uses a proprietary filtration media that completely removes iron and manganese from the potable water supply without the use of complicated chemical injection systems. Later improvements to the filtration plant addressed new EPA compliance requirements for uranium removal using a uranium - specific ion exchange system that treats production water to an average of 5 micrograms per liter ( pg/ L) with a maximum concentration of 20 pg/ L, well below the EPA' s maximum contaminant level ( MCL) of 30 pg/ L. With a small footprint system in mind, PACE' s design was able to reduce capital and operational costs significantly. PACE continues to provide testing and operating supervisory oversight services to ensure optimal operation of the treatment facility.

Groundwater Iron and Manganese Filtration System — South Orange County, CA Mr. Peterson served as the Project Manager for the design, construction, and commissioning ofa new 1, 000 gpm iron and manganese filtration system for a booster pump station. The system was designed to improve reliability and operational flexibility, allowing the client to supply irrigation water needs from any of their groundwater wells, including wells with elevated levels of these contaminants. The treatment system consists of automatic inlet pressure regulation, chlorine pre -oxidation injection, four parallel manganese dioxide filter banks, and a semi - automated treatment bypass that allows the blending of low iron content well water with treated water. This increases the capacity of the booster pump station to 1, 500 gpm and provides source water equivalent to the capacity. When commissioned, the system was performance - tested at its maximum design flow rate with influent total iron concentrations as high as 15 milligrams per liter ( mg/ L) and consistently produced effluent with less than 0. 2 mg/ L.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Ancy 'Komor,
VS, PE

EDUCATION
MS Civil and Environmental Engineering, Arizona State University 2001
BS Civil Engineering, University of Minnesota — 1999
Cum Laude

YEARS OF EXPERIENCE
25 Years
Joined PACE in 2000

REGISTRATIONS
Professional Engineer / CA 64928
Professional Engineer / AZ 46719
Professional Engineer / LA PE. 0034854 (inactive)
Professional Engineer / OR 95149PE (inactive)

AFFILIATIONS
Adjunct Instructor of Water Reuse, Santiago Community College Past President of Orange County Water Association ( OCWA) California Water Environment Association ( CWEA)
WateReuse Foundation
National American Lake Management Society ( NALMS)

PUBLICATIONS
Photobiological Treatment of RO Reject. Global Water Intelligence. 2020
f ree Chlorine Disinfection of full -Scale MBR Effluent to Achieve 5 - Log Virus Inactivation. Water Environment Research. 2018 A Novel Photobiological Process for Reverse Osmosis Concentrate Treatment Using Brackish Water Diatoms. Water Science and Technology. 2018
Aqueous Silica Removal from Agricultural Drainage Water and Reverse Osmosis Concentrate by Brackish Water Diatoms in Semi - batch Photobioreactors. Journal of Applied Phycology. 2017 Chapter 6. Removal of Iron and Manganese from Water --
Chemistry and Engineering Considerations. Heavy Metals in Water pp 122- 140). 2014
Effect of Ammonia and Chloramine Pretreatment during the Ozonation of a Colored Groundwater with Elevated Bromide.

Ozone: Science and Engineering. 2013
Cost to Benefit Analysis of Desalination of Golf Irrigation Water.

Water Reuse Symposium. Phoenix, AZ. 2011
Effects of Nitrification, Stratification, and Algaecidal Disinfection in Country' slargest Recycled Water Reservoirs. Water Reuse Symposium, Washington, D. C. 2010
Upper Oso Reservoir: lake Management Update. Presentation to Santa Margarita Water District. 2009
Evaluation of Denitrification Mechanisms in Constructed Wetlands ohnci gal /
ca/c
Andy Komor is a technical expert on engineering infrastructure having successfully performed engineering design, project management, and field services for over $700 million in capital on over 300 completed water resource projects in the past 15 years. His background as a researcher has led to several national presentations and technical papers. Mr. Komor is sought after as a technical consultant and designer on water resources projects including advanced wastewater treatment and water recycling, drinking water, water infrastructure, ocean and brackish water desalination, groundwater recharge, lake and reservoir water quality enhancements, and new technology research and development. As part of the design and engineering of such projects, Mr. Komor is adept at providing comprehensive civil, mechanical, structural, electrical, and controls designs which are innovative, cost effective, and highly operable. He also has significant experience in field engineering, construction oversight, and startup services through design -build projects and design -bid -build project structures. Mr. Komor has an excellent breadth and depth of experience in water resources and will ensure a value- added approach, sound design, and effective implementation of the project.

RELATED EXPERIENCE
City of Huntington Beach Well 9 BAC Treatment System — Huntington Beach, CA Mr. Komor served as the Project Manager for multiple phases of project development, lab services, piloting, concept development, water treatment facility engineering, planning division graphics, and communication with the City staff through startup and operations support services on this innovative and unique treatment system. Sophisticated desktop, bench - scale, pilot -scale, and full- scale demonstrations were first provided for confirmation of the proposed treatment process for innovative biological treatment of reduced ( non -oxidized) drinking water quality constituents in the potable supply at Well 9, and other City wells. This first stage of work confirmed mechanisms for biological oxidation of hydrogen sulfide. A complete 3, 000 gpm ( 4. 3 MGD) treatment facility design was then designed including six 10 -foot diameter biological activated carbon ( BAC) filtration vessels and media, with complete structural, electrical, and controls integration design for reliable and simple operation.

City of Seal Beach Lampson Water Well Hydrogen Sulfide Removal — Seal Beach, CA The Lampson Water Well produces up to 4, 000 gpm and is one of the City of Seal Beach' sfour water wells.

Historically high hydrogen sulfide ( H2S) concentration levels have caused the well to be underutilized, operating at low flow rates to avoid odor complaints. Mr. Komor served as the QA/C Principal for the pilot testing to evaluate the viability of a biological treatment process using GAC with and without plastic media and under various operating conditions. The pilot testing allowed for troubleshooting and refinement that led to selection of the BAC process. The final system design effectively removes H2S odors and reduces chlorine chemical dosage using four 12 - foot diameter steel pressure vessels, and also allows for future incorporation of per- and polyfluoroalkyl substances ( PFAS) treatment.

Sweetwater Authority National City Well Iron and Manganese Treatment System — National City, CA
The Sweetwater Authority in southern San Diego County sought to remove the color from the drinking water within the National City Area which was caused by iron and manganese in three major supply wells.

As the Project Manager, Mr. Komor completed a three- month pilot project using five different treatment trains for oxidative filtration of iron and manganese. Train 4, consisting of" Greensand Plus" or manganese dioxide coated sand, achieved treatment consistently to less than 5 parts per billion. By removing iron particles about 0. 45 micrometers in size, accumulation in the drinking water system in National City will be substantially reduced. The system will include backwash recovery to save water loss from backwash. The final design of the treatment system utilized the findings and recommendations that were made following C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
PRINCIPAL / QA/C - Andy
RELATED EXPERIENCE CONT.

Komor, MS, PE
the pilot testing and included a new booster pump skid and on - site water quality analyzers. Drinking water permitting and approval assistance was also provided.

Grand View Water Campus RO PFAS Groundwater Treatment Facility — Buckeye, AZ As Principal, Mr. Komor led the development of the treatment process approach for the Grand View reverse osmosis treatment project to deliver an Advanced Drinking WaterTreatment Facility for the City of Buckeye, Arizona. This infrastructure development project will provide residents with reliable and safe water for years and enhance the City' s water infrastructure to face droughts in the region. The Grand View RO Plant will be constructed in multiple phases, where 3 million gallons per day of groundwater treatment facility under phase 1 will be a 12 MGD plant at the buildout. The treatment system includes pretreatment, RO- based desalination, water stabilization, disinfection, and brine disposal. The proposed treatment system removes high salinity, nitrates, hardness and polyfluoroalkyl substances ( PFAS) from the groundwater and provides safe drinking water to residents meeting drinking water standards.

City of Riverside Garner B WeII PFOA/FOS Treatment Pilot Testing — Riverside, CA As QA/C Principal, Mr. Komor assisted in conducting a condition assessment ofthe out - of -service granular activated carbon ( GAC) treatment system to determine the feasibility of rehabilitating the system into a full- scale pilot system to treat perfluorooctanoic acid ( PFOA) and perfluorooctane sulfonate PFOS). The pilot study evaluated potential treatment alternatives and enhancements, including co - precipitation filtration and biological treatment, that could lower capital costs and/ or annual operations and maintenance costs compared to typical treatment methods. Upon determining that the rehabilitation was feasible, PACE prepared improvement plans and specifications to reactivate the treatment system, designed modifications to accommodate either GAC or ion exchange media, and specified components to be replaced, including the flow meter and tank lining.

Walnut Canyon Reservoir and Lenain Water Treatment Plant Operations and Water Infrastructure — Anaheim, CA
Mr. Komor served as the Project Manager in charge of the study and recommended optimal operation of Walnut Canyon Reservoir, a 1. 0 -billion - gallon raw water reservoir with a storing capacity of 3, 000 acre- feet located in Anaheim' shills and canyon area, as well as the Lenain WaterTreatment Plant. PACE conducted a series of bench - scale tests to determine optimal treatment processes that would prevent occurrences of taste and odor compounds, sulfide, and manganese. The PACE team monitored the sulfide and manganese concentrations at six different locations in the plant, as well as the ozone and chlorine levels, and provided quick feedback to the plant operators to ensure finished water met the drinking water standards for sulfide, manganese, and bromate.

Mesa Water District Wells Treatment System Upgrades — Costa Mesa, CA As the Project Manager, Mr. Komor led the civil, process, conveyance, and water quality improvements ofWells 1, 3, 5, 7, 8, and 9 for Mesa Water District. An innovative, low- cost approach was developed to treat colored water with ozone, preceded by monochloramine addition to suppress bromate formation.

The existing chloramination system was modified to add ammonia first, prior to chlorine addition, which resulted in substantial savings in chemicals and improvement in disinfection control. Efforts included extensive evaluation of the existing systems, site inventories, alternatives identification and evaluation, water quality analysis at PACE' Sin- house laboratory, bench scale pilot testing, and design services to automate operations, improve safety, and upgrade electrical and mechanical systems.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Victoria Whitener,
PhD, EIT

EDUCATION
PhD Civil Engineering, University of California, Los Angeles — 2020
MS Civil Engineering, University of California, Los Angeles — 2015
BS Civil Engineering, University of California, Los Angeles — 2014

YEARS OF EXPERIENCE
10 Years
Joined PACE in 2023

REGISTRATIONS
Engineer in Training / CA
NCEES ID 15- 615- 42

PROCEEDINGS & PUBLICATIONS
Pilot Testing of PFAS Removal from a High TOC Surface Water.

AWWA Water Quality Technology Conference, Dallas, TX. 2022 Antibiotic Resistance Genes in Reclaimed Water for Irrigation in the Maneadero Valley, Mexico. American Chemical Society National Meeting, San Diego, CA. 2019.

A Comparative Analysis of the Fate of Antibiotic Resistance Genes in Parallel Secondary Wastewater Treatment Systems.

Water Microbiology Conference, Chapel Hill, NC. 2019.

Multi -Tiered Approach Utilizing Microbial Source Tracking and Human Associated- IMS/ ATPfor Surveillance of Human Fecal Contamination in Baja CA, Mexico. Science of the Total Environment. 2018
sr. project
engineer
Victoria Whitener has 10 years of consulting, experimental, and research experience addressing diverse water quality issues within the water and wastewater industries. She skillfully utilizes her engineering research background to provide high -quality technical insight and ingenuity to engineering design projects. She is adept at understanding complex water quality issues for a client and communicating the material in a clear and engaging way. Dr. Whitener has specific expertise in evaluating and pilot testing water quality treatment systems to quantify removal of particular constituents of concern such as metals, volatile organic compounds ( VOCs), and per - and polyfluoroalkyl substances ( PFAS), and has worked with many engineering professionals that were in need of novel solutions for their treatment needs.

RELATED EXPERIENCE
California -American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
Dr. Whitener is serving as Project Engineer to design a hexavalent chromium removal system for six wells owned and operated by the California - American Water Company. Located in the East Pasadena and San Marino service areas, these wells have all been found to contain hexavalent chromium levels above the recently established Maximum Contaminant Level ( MCL). New strong base anion ( SBA) exchange resin removal facilities are being designed at four sites to remove hexavalent chromium from the well water, and the existing well pumps will be upgraded to provide sufficient pumping capacity through the SBA exchange system.

Kalaeloa Seawater Desalination Facility — Kapolei, HI
Dr. Whitener is serving as the Design Engineer under the Kalaeloa Desalco team for a new multi - phase seawater desalination facility in the Kalaeloa area of Oahu, HI, near Barber' sPoint. As Engineer of Record and prime design consultant for the project, PACE is providing overall process design and coordination, design of two seawater supply wells, pre -filtration, seawater reverse osmosis ( SWRO), various chemical storage and injection facilities, calcite filtration, final water quality stabilization, disinfection, final water storage, final water delivery, an underground injection control ( UIC) well, facility electrical, instrumentation and controls, and Supervisory Control and Data Acquisition ( SCADA) responses. Once completed, the Kalaeloa Seawater Desalination Facility will have a production capacity of 1. 7 MGD with additional future phases expandable to a final capacity of 5. 1 MGD. As part of the design process, Dr. Whitener assisted with the development of a full- scale post -treatment process pilot system and pilot testing protocol to test the remineralization process for both quality and corrosion protection and to meet existing groundwater conditions.

Santa Monica Sustainable Water Infrastructure Project ( SWIP) Advanced Water Treatment Facility ( AWTF) — Santa Monica, CA
PACE was responsible for the design of the Advanced Water Treatment Facility ( AWTF), a key component of the City of Santa Monica' sSustainable Water Infrastructure Project ( SWIP). The AWTF treats a combination of raw wastewater and harvested stormwater, producing 1. 0 MGD of purified water for groundwater augmentation. The facility is one of the first to take in raw wastewater, fully oxidize the stream via biological treatment, and provide the required pathogen reduction to meet California Title 22 regulations for indirect potable reuse with reduction of 12 - log virus, 10 - log Cryptosporidium, and 10 -log Giardia all within one facility. Dr. Whitener assisted with troubleshooting the post -treatment remineralization system by visiting the site, creating a study plan, and organizing data to investigate the cause of the issue. This work ensured that quality water would continue to be produced by the facility and that all regulated corrosion control parameters remained stable. The treatment process consists of a five - barrier stream: MBR, cartridge filtration, reverse osmosis ( RO), ultraviolet advanced oxidation process ( UVAOP), and chlorine disinfection.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
SR. PROJECT ENGI\ER - Victoria Whitener, PhD, EIT
RELATED EXPERIENCE CONT. The facility is the first to receive pathogen credits through the MBR and cartridge filtration processes by deliberately selecting the equipment and system design to remain within certain operating envelopes.

Sarival Water Reclamation Facility (WRF) — Goodyear, AZ The new Sarival WRF treats an average day flow capacity of 4. 0 million gallons per day ( MGD) with a maximum day flow capacity of 6. 0 MGD and a peak hour capacity of 10. 0 MGD, providing support to an existing built out regional WRF for current loading and future flow conditions. The facility uses a membrane bioreactor ( MBR) treatment process followed by chlorination disinfection to meet Arizona Department of Environmental Quality ( ADEQ) Title 18 Class A+ requirements for unrestricted reuse of recycled water.

The treatment process consists of an advanced and integrated influent headworks and grit removal and washing system, followed by the advanced Closed Loop Reactor ( CLR) secondary treatment process trains, coupled to four membrane separation trains and followed by the sodium hypochlorite disinfection process, chlorine contact basins, and effluent reclamation pump station. Effluent from the WRF is designed to go to two discharge points: one discharge point to the Liberty Aquifer Replenishment Facility, which is shared with another regional facility, and another discharge point to a local irrigation district' scanal for irrigation use. As a Design Engineer, Dr. Whitener wrote the Operations & Maintenance ( O&M) Manual for the WRF and provided a sampling plan for startup and commissioning.

Pilot Testing of PFAS Removal from Surface Water — Lake Elsinore, CA Dr. Whitener conducted pilot -scale testing of Lake Elsinore to quantify the removal of PFAS chemicals at Canyon Lake Water Treatment Plant ( CLWTP). Project responsibilities included using granular activated carbon ( GAC), ion - exchange resin, and a specialty adsorbent in filtration and post filtration processes, managing the overall testing oversight effort, and co -writing the final report delivered to EVMWD with technical recommendations.

Rapid Small -Scale Column Testing — Los Angeles County, CA Dr. Whitener utilized RSST in a variety of projects as a bench - scale testing procedure used to predict the replacement frequency of an adsorbent at a full- scale treatment plant. Project responsibilities included performing RSSCT for predicting the replacement frequency of Fluorosorb media for removal of PFAS contaminants ( Santa Clarita) and GAC for removal of PFAS ( LACSD and Cal Water), and conducting data analysis presenting equivalent bed volumes of media treated at full scale before contaminant breakthrough.

Demonstration Scale Testing of DBP and Manganese Treatment & Control — Santa Barbara, CA
Dr. Whitener conducted demonstration testing of GAC over granular ferric oxide media for the treatment of total organic carbon ( TOC) for disinfection byproduct ( DBP) reduction and manganese reduction for the Goleta Water District. Her responsibilities included managing the testing oversight effort, coordinating the data collection and conducting the data analysis, and co - writing the final report.

Watershed Sanitary Surveys — Various Cities, CA
Dr. Whitener was responsible for preparing components of five- year watershed sanitary survey updates for large and small water systems throughout California. Dr. Whitener compiled, reviewed, and analyzed five years of water quality data to identify changes over time and location, and identify potential sources of contamination.

Nitrate Peaking through Granular Activated Carbon ( GAC) Filters — Southern California Dr. Whitener evaluated nitrate peaking from a temporary groundwater treatment GAC system occurring after short- tem system shutdowns and compared the effect from different GAC medias. She was responsible for co -writing the pilot testing plan for the study and analyzing and visually presenting the testing results.

Pilot Testing of GAC Alternatives for Metals, VOCs, and PFAS Removal — Santa Barbara, CA Dr. Whitener conducted pilot -scale testing of GAC filtration and adsorption for the treatment of groundwater containing elevated metals, VOCs, and PFAS for the Goleta Water District. She was responsible for co -writing the testing plan for the groundwater treatment systems, aiding in the setup of the pilot filtration systems, coordinating the projects, collecting weekly water quality and operational data, and analyzing the data.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Jason
Ezell

EDUCATION
BS Mechanical Engineering, California State University, Fullerton

YEARS OF EXPERIENCE
9 Years
Joined PACE in 2017
project
encineer
Jason Ezell is a Project Engineer with nearly 10 years of experience in water system planning and design. He is proficient in CAD drafting and 3D modeling and develops detailed engineering analysis calculations to support system sizing and performance analyses. His experience includes preparing and editing technical reports, developing construction documents, and coordinating closely with clients and contractors to ensure accurate design implementation and successful project delivery.

RELATED EXPERIENCE
Water Treatment Facility for Iron and Manganese Filtration Removal — San Diego County, CA
Jason Ezell served as the Project Engineer for a two- phase groundwater treatment facility that treats 99% of the annual water supply and removes iron and manganese to meet EPA drinking water standards.

He supported the design of a 1, 400 gpm filtration system using Greensand media to eliminate iron and manganese without chemical injection or routine media replacement. His responsibilities included engineering calculations, preparation of plans and specifications, and coordination of system integration for wells, storage tanks, and the central treatment facility to deliver a cost- effective, high -performing solution.

River Islands Potable Water Booster Pump Station and Tank Storage Site — Lathrop, CA Jason Ezell served as Project Engineer for the Phase I Potable Water Booster Pump Station and Tank Storage Site at River Islands in Lathrop, supporting a 5, 000 -acre master - planned community. He contributed to the design of three 1. 5 -million - gallon welded steel storage tanks and a 10, 000 gpm booster pump station equipped with vertical turbine pumps and hydropneumatic storage to maintain system pressure and meet distribution demands. His role included preparation of engineering calculations, development of plans and specifications, and coordination of control strategies and SCADA integration to align with City standards and ensure reliable, efficient system performance.

Advanced Wastewater Treatment and Recycling Facility Expansion — Lathrop, CA In his role as Project Engineer, Jason Ezell contributed to the multi -phase expansion of the City of Lathrop Consolidated Treatment Facility ( CTF), an MBR wastewater plant. He supported project development, studies, design, and bid and construction administration for Phase 2, which increased capacity from 1. 0 to 2. 5 MGD, and Phase 3, currently under design, expanding the facility to 4. 0 MGD with provisions for a future 6. 0 MGD buildout. Jason assisted in designing a simplified secondary and MBR treatment system that minimized valving and pumping, integrated with existing infrastructure, and maintained Title 22 disinfected tertiary water production, while supporting the chlorine contact time revalidation study approved by the CA DDW.

Central Lathrop Specific Plan (CLSP) Pipeline System — Lathrop, CA As Project Engineer, Jason Ezell supported the design of the Central Lathrop Specific Plan sewer lift station and sewer forcemain conveyance pipeline and coordinated the forcemain connection to the existing treatment plant influent header manifold.

River Islands Phase II Irrigation Pump Station Project — Lathrop, CA Jason Ezell, Project Engineer, contributed to the preliminary design of a recycled water booster pumping and strainer system for the River Islands Development in Lathrop, supporting hydraulic modeling and system analysis to ensure reliable delivery of recycled water for large- scale irrigation demands. He assisted in preparation of the technical report for the River Islands Master Plan, documenting design criteria, hydraulic calculations, and infrastructure recommendations. In response to irrigation demands exceeding the capacity of the Phase I Irrigation System, he collaborated with the project team on planning and design C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
PROJECT ENGINEER — Jason Ezell
RELATED EXPERIENCE CONT. efforts that prioritized development of the Phase II Irrigation Pump Station, helping advance the necessary infrastructure to meet the community' sprojected water needs.

Design Services to Rehabilitate/ Replace Three Wastewater Pump Stations — Redondo Beach, CA
Jason Ezell served as Design Engineer and Construction Manager for the rehabilitation and replacement of sewer lift stations for Redondo Beach, including the existing Rindge and Portofino Sewer Pump Stations, with plans to construct the Yacht Club Sewer Pump Station next year. He led design development and oversaw construction activities to rehabilitate or replace aging infrastructure with robust, reliable, and efficient pump station systems. His role included addressing complex operational challenges such as maintaining continuous sewer service during construction, working within tight site footprints, and designing for corrosive coastal conditions. Through coordinated planning, constructability review, and on - site management, Jason helped deliver resilient facilities tailored to the City' s long- term operational needs.

Lake System Assessment for Pantages at Discovery Bay — Contra Costa County, CA Jason Ezell served as Project Engineer for the Pantages at Discovery Bay Sewer Lift Station in Discovery Bay, designing a duplex sewer lift station ( one duty, one standby) to convey all wastewater from 277 residential units and a clubhouse to the local collection system. Each pump is rated at 207 gpm at 30 feet of head and controlled by VFDs for level - based operation. His responsibilities included hydraulic design, pump selection, and coordination of the sewer wet well and associated piping to ensure reliable, efficient, and resilient wastewater conveyance for the community.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Ashley Green,
PhD

EDUCATION
PhD Civil & Environmental Engineering, UC Irvine — 2025 MS Civil & Environmental Engineering, UC Irvine — 2022
BS Environmental Engineering, California Polytechnic State University, San Luis Obispo — 2020

YEARS OF EXPERIENCE
5 Years
Joined PACE in 2025

AFFILIATIONS
American Society for Microbiology ( ASM)
American Chemical Society ( ACS)
American Society for Civil Engineers ( ASCE)
National Society of Black Engineers ( NSBE)

PUBLICATIONS
Community - Scale Surveillance of SARS- CoV- 2: Optimizing Sampling Strategies for Centralized Wastewater Treatment Plants. Environmental Engineering Science. 2024.

Tracking COVID- 19Trends in Communities with Low Population by Wastewater -Based Surveillance. Science of the Total Environment. 2025.

Variabilities in N2 and E Gene Concentrations in a SARS- CoV- 2 Wastewater Multiplex Assay. Microorganisms. 2025.
oermtUnc
specialist
Ashley Green is an environmental engineer and researcher with over 5 years' experience in wastewater - based surveillance, water quality monitoring, and water treatment. She brings a breadth of experience from her PhD, ranging from stakeholder engagement, wastewater sampling design and project coordination, and microbiological and physicochemical analysis of diverse wastewater streams. Prior to her research career, she held multiple internships with regulatory agencies such as the Central Coast Water Quality Control Board and City of Los Angeles Sanitation and Environment, and her background in permitting and environmental protection informs her approach to carefully planned and executed research/ engineering projects to this day. She plans to bring her careful attention to detail and passion for thorough and sustainable water quality management to this project.

RELATED EXPERIENCE
Expansion of the Lathrop Consolidated Treatment Facility — Lathrop, CA Under Phase 3, the expansion of the Lathrop Consolidated Treatment Facility includes systems designed to support a 4. 0 MGD capacity, along with allowances for full future buildout. The new headworks screening train will provide an ultimate average day flow capacity of 6. 0 MGD and a peak hourly flow capacity of 12 MGD. Once the 4. 0 MGD expansion is complete, only the addition of biological tanks and aeration equipment will be required to achieve the final buildout capacity of 6. 0 MGD. For this project, Ashley planned a tracer study to verify chlorine disinfection performance and contact time, coordinated startup of the Phase 3 system and seeding of the MBRs, and maintained regular technical communication with regulatory agencies and project partners.

Great Park Stormwater Management Project — Irvine, CA
PACE is delivering conceptual planning, design, and permitting support for roughly 22 acres of lakes within the Great Park in Irvine, California. These lakes will provide a wide range of active and passive recreational opportunities while also serving as multi - functional stormwater infrastructure for a 377 -acre watershed.

They will act as the primary BMP by capturing and detaining the park' sfirst -flush stormwater. Ashley is responsible for validating the performance of the pilot system and troubleshooting technical issues as they arise, while maintaining rigorous quality control and quality assurance throughout the project. She regularly engages with the client, prepares weekly reports, and oversees laboratory operations.

Manteca Sidestream Treatment and UV Rehabilitation Project — Manteca, CA PACE is currently delivering integrated design services for new facilities supporting sidestream treatment and ultraviolet ( UV) disinfection at the Manteca Wastewater Quality Control Facility in the City of Manteca.

The project aims to create a new local water source that reduces reliance on potable supplies while limiting the aesthetic impacts typically associated with water recycling processes. As the Permitting Specialist, Ashley wrote the technical proposal approach and routinely secures budgetary quotes from vendors.

Civita Water Recycling Facility — San Diego, CA
PACE is the Engineer of Record for the Civita Water Recycling Facility, a 250, 00- GPD MBR system that will supply Title 22 recycled water to the Civita Development. The project features an innovative design that locates the treatment plant within two underground parking levels of a five -story residential/ mixed- use building. Equipment is distributed across both levels: the upper level houses the aeration/ MBR blowers, UV disinfection system, chlorine storage, pumps, and electrical components, while the lower level contains the MBR tanks, aeration system, and a 500, 00 -gallon effluent storage tank. Treated water produced by the facility is used for community parks, shared landscape areas, and cooling towers. In her role, Ashley developed a tracer study to support DDW approval of chlorine contact time and regularly coordinates with regulators from the SWRCB and DDW.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
PERMITTI\ GSPECIALIST - Ashley Green, PhD
RELATED EXPERIENCE CONT. Optimizing Sampling Strategies for COVID- 19 at WWTPs — Los Angeles, CA Ashley served as the lead researcher in a Water Research Foundation funded project to optimize sampling strategies from centralized WWTPs in LACSD for COVID- 19surveillance from 2020-021. She first helped pilot the sampling plan by programming HACH autosamplers and sampling raw concentrated wastewater upstream ofWWTP influent locally. She later developed a plan for sampling and analyzing wastewater samples from three WWTPs of varying sizes, treatment capabilities, and service areas. From this, sampling strategies such as sludge sampling for viral testing and 24 -hour composite wastewater sampling were validated and recommended for other wastewater - based surveillance projects.

UC Irvine Campus Wastewater Monitoring — Irvine, CA
Ashley served as Project Manager for a Provost' s Office funded UC Irvine campus wastewater monitoring initiative from December 2021 to June 2022. With COVID- 19 surging and students living in close proximity on campus, wastewater monitoring was needed to detect early signs of outbreaks before clinical case records reflected positive tests. A pilot study sampled five manholes using grab sampling to test for COVID- 19and water quality indicators. Strategies from the pilot informed a successful, full- scale program sampling 13 manholes across all student housing. Her team collected over 700 composite samples from autosamplers to assess disease prevalence and wastewater quality. Findings were shared with UC Irvine administration and the Provost via a public dashboard.

Viral Surrogate Removal at Water Recycling Facilities — Irvine, CA & Salt Lake City, Utah Ashley served as a researcher in a national EPA - funded study in 2023 investigating viral surrogate removal at water recycling facilities ( WRFs) to understand: 1) which viruses best represented removal across treatment stages, and 2) seasonal and geographic variability. She developed and validated primer and probe PCR assays in the lab for sensitive and specific detection of four enteric virus targets and three non - human viral surrogate targets. Once validated, these assays were used to analyze viral concentrations across different stages of wastewater treatment at two Iarge WRFs in California and Utah, with 36 samples collected, processed, and analyzed.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Tahir M bool,
PhD
ac

EDUCATION
PhD Environmental Engineering, Sejong University, South Korea MS Environmental Engineering, National University of Science and Technology ( NUST), Pakistan
BS Agricultural Engineering, University of Agriculture
Faisalabad, Pakistan

YEARS OF EXPERIENCE
10 Years
Joined PACE in 2025

PUBLICATIONS
Fluorescence moieties as a surrogate for residual chlorine in three drinking water networks Chemical Engineer Journal, 2021 Seasonal occurrence of N- nitrosamines and their association with dissolved organic matter in full- scale drinking water systems: Determination by LC - MS and EEM- PARAFAC Water Research, 2020
Improved dewaterability of anaerobically digested sludge and compositional changes in extracellular polymeric substances by indigenous persulfate activation, Science of the Total Environmental, 2020
A year - long cyclic pattern of dissolved organic matter in the tap water of a metropolitan city revealed by fluorescence spectroscopy, Science of The Total Environmental, 2019
pilot testing
specialist
Mr. Maqbool is a seasoned environmental engineer with over 10 years of experience in advanced water quality monitoring and treatment. He has develop spectroscopic tools for online water quality monitoring in drinking water plants and distribution networks. His research has focused on changes in organic matter, disinfection - byproducts and residual disinfectant in drinking water systems and on establishing correlations among these parameters in large metropolitan networks. He also has experience in optimizing systems for for metal removal through adsorption or membrane based filtration. He has extensive hands- on experience in optimizing EPA and AWWA standard methods for Water and Wastewater analysis. Mr. Maqbool has significant experience in the characterization natural organic matter ( NOM) in source and drinking waters, including the metal binding property of NOM which has implications of corrosion in distribution systems and metal bioavaialbility. Mr. Maqbool has authored over 50 publications, with more than 2, 000 citations, all focused on water quality and engineering. Notably, he has been published 11 times in Water Research, a top journal in the field of water quality and engineering. Other notable publications featuring his work include Desalination, Chemical Engineering Journal, Journal of Hazardous Material, and Science of the Total Environment.

RELATED EXPERIENCE
City of Vernon Source Water Quality Assessment and Treatment Design — Vernon, CA The City of Vernon engaged PACE to assess water quality issues at its seven active groundwater wells and to design wellhead treatment systems capable of addressing elevated iron, manganese, and per- and polyfluoroalkyl substances ( PFAS). PACE prepared a comprehensive Master Plan outlining effective and feasible treatment strategies, establishing a standardized framework for future facilities, and providing the City with a clear roadmap to maintain regulatory compliance and long- term water reliability. Tahir is leading method development for the Pilot Plant operation and optimizing the system for manganese and iron removal.

Manteca Sidestream Treatment and UV Rehabilitation Project — Manteca, CA PACE is providing integrated design services for new sidestream treatment facilities and ultraviolet ( UV) disinfection upgrades at the Manteca Wastewater Quality Control Facility in the City of Manteca. The project is intended to create a new local water source that reduces dependence on potable supplies while minimizing the aesthetic impacts commonly associated with water recycling. Tahir led the conceptual development of the Anammox sidestream system and completed the Biowin modeling for the sidestream processes.

Hanford Wastewater Upgrades — Hanford, CA
The wastewater upgrades in Hanford, California center on improvements to the Effluent Treatment Facility ETF), supporting the large- scale effort to solidify radioactive tank waste through the Waste Treatment and Immobilization Plant ( WTP) vitrification process and the Direct - Feed Low -Activity Waste ( DFLAW) program. The project includes installing new UV units, expanding tanker load - in stations, enhancing filtration systems, and upgrading facilities to manage increased volumes of liquid waste and leachate from tank treatment — ensuring efficient processing and disposal. As part of the PACE team, Tahir is leading the Basis of Design calculations, authored the Basis of Design Report, and is responsible for BioWin modeling.

Sundance WRF Phase II Improvements — Buckeye, AZ
The City of Buckeye is upgrading the Supervisory Control and Data Acquisition ( SCADA) system at the Sundance Wastewater Reclamation Facility ( WRF). This project includes migrating existing Programmable Logic Controller ( PLC) programs to current PLCs, as well as developing and implementing new programs on additional PLCs. The initiative aims to streamline facility operations, increase treatment capacity, and consistently produce low -turbidity, Class A reuse water from all facility effluent. As part of the PACE team, C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
PILOT TESTING SPECIALIST - Tahir Maqbool, PhD
RELATED EXPERIENCE CONT. Tahir is leading the Basis of Design calculations, authored the Basis of Design Report, and oversees BioWin modeling for the project.

Water Quality Variation in Water Treatment Systems and Distribution Network Investigation Project — China
Mr. Maqbool led an investigation into the seasonal variability in source water quality across 12 full- scale drinking water treatment facilities operating with different process trains. He characterized source, finished, and distribution system waters using advanced analytical techniques. His work evaluated the relationship between seasonal changes and variation in in natural organic matter ( NOM), a key precursor to disinfection by product ( DBPs) in treatment systems and distribution networks. The study demonstrated that seasonal shifts significantly influence NOM characteristics, affecting DBP formation potential, and consumption of residual disinfectants within networks. Based on these findings, he recommended seasonal optimization of treatment processes to ensure consistent water quality and safe drinking water delivery.

Bioelectrochemical Anaerobic Digester Project — Department of Energy ( DOE), Georgia Tahir Maqbool led a DOE -funded research initiative aimed at enhancing biogas production from anaerobic digesters. In collaboration with the F Hill Wastewater Treatment Plant in Georgia, he designed and implemented an automated pilot -scale anaerobic digester. Through innovative bioelectrochemical treatment, the project successfully increased biogas yield and improved the dewaterability of digested sludge up to three times, contributing to more efficient and sustainable wastewater management. The pilot -scale system was integrated in - line with GC- FID/ TCD for real- time monitoring of biogas composition and volatile fatty acids.

PFAS Quantification and Optimization Project for University of Alabama — Tuscaloosa, AL Mr. Maqbool led a comprehensive PFAS quantification initiative using LC- MS/S, where he optimized EPA Methods 1633 and 533 for enhanced sensitivity and reliability. His work included refining extraction protocols for water, wastewater, and soil matrices, and developing derivatization techniques for quantifying non -polar PFAS precursors such as fluorotelomer alcohols ( FTOHs). He also investigated PFAS degradation pathways, focusing on biochemical processes in soil and photocatalytic mechanisms in aqueous systems.

Additionally, he pioneered a rapid detection method using MALDI- TOF mass spectrometry capable of measuring PFAS compounds in under one minute. He was also in - charge of mass spectrometer facility which was providing services to different research groups working on PFAS in Alabama.

Membrane Fouling Lowering Project — Pakistan
Mr. Maqbool led research focused on enhancing membrane filtration performance by mitigating membrane fouling in pilot - scale submerged hallow fiber membrane bioreactor ( MBR). He achieved this by optimizing the filtration —relaxation cycle and implementing quorum quenching strategies. His work successfully doubled the filtration duration through operational optimization and extended it several - fold by suppressing extracellular polymeric substances ( EPS) production using indigenous microbial species.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
3 M
ashar Ishac
3A, PE, PMP

EDUCATION
MS Business Analytics Hult Intl. Business School
Master of Business Administration Hult Intl. Business School BS Electrical Engineering University West

YEARS OF EXPERIENCE
11+ Years
Joined PACE in 2023

REGISTRATIONS
Professional Electrical Engineer / CA 24590
Professional Electrical Engineer / AZ 82968
ICC Commercial Electrical Inspector # 9916237
Project Management Professional # 3010684
OSHA 10
OSHA Confined Spaces
Safe Electrical Work Practices ( NFPA)
NEPA 70: National Electrical Code
sr. electrical
encineer
Bashar Ishaq is an internationally established Electrical Engineer with 10+ years of handson experience in global industrial plant facilities. Bashar' s key areas of experience are power
distribution design, project planning, and final commissioning in wastewater and petrochemical plants. His unique expertise includes electrical design for direct -on- lie low voltage motors, UPS as a key client for electrical design systems ( 30- 60 kVA) and low -voltage substations. Additionally, he specializes in developing arc flash and coordination studies. Recognized as a reliable and trustworthy SME, Bashar has been granted direct access to customer facilities, where he continues to hone his skills as a Field Engineer by directly implementing his electrical designs for clients, resulting in significant project cost and time savings. Bashar has also served as Project Engineer for a $ 40 million multi - disciplinary project, with primary responsibilities including managing cross -functional stakeholders, and leading the development of a needs assessment report with a team of engineers. In addition to being a strategic problem - solver, Bashar prides himself on his vast knowledge of safe working practices and potential hazards in operating plant environment

RELATED EXPERIENCE
City of Seal Beach Lampson Wellhead Treatment — Seal Beach, CA The Lampson Water Well produces up to 4, 000 gpm and is one of the City of Seal Beach' sfour water wells.

Historically high hydrogen sulfide ( H2S) concentration levels have caused the well to be underutilized, operating at low flow rates to avoid odor complaints. Wastewater generated by backwashing the filter vessels will be discharged to the existing sewer system. PACE also designed an inverted sewer siphon to increase flow capacity through an existing choke point. Mr. Ishaq, serving as the Sr. Electrical Engineer/ Engineer- Of- Record, provides electrical engineering support and the final review of the electrical design. The electrical design included creating all electrical calculations, including demand load, short circuit, voltage drop, and cable and conduit sizing, and reviewing and approving the final electrical design and specifications.

California -American Water Company Hexavalent Chromium Removal — Los Angeles County, CA
Mr. Ishaq is serving as Sr. Electrical Engineer, supporting the design of the hexavalent chromium removal system for six wells owned and operated by the California - American Water Company. Located in the East Pasadena and San Marino service areas, these wells have all been found to contain hexavalent chromium levels above the recently established Maximum Contaminant Level ( MCL). New strong base anion ( SBA) exchange resin removal facilities are being designed at four sites to remove hexavalent chromium from the well water, and the existing well pumps will be upgraded to provide sufficient pumping capacity through the SBA exchange system.

City of Patterson Wastewater Treatment Plant Expansion — Patterson, CA Mr. Ishaq designed an expansion of an existing 1. 75 MGD wastewater treatment plant' s power distribution and control systems. The design included a new power utility service ( 480V, 1, 600 A), new low -voltage switchgear, a low -voltage motor control center, 20+ motors, a standby generator, and other miscellaneous systems. Additionally, Mr. Ishaq interfaced with the power utility and completed the application for the new service with all the required documents per the utility requirements on behalf of the client.

Phase III Expansion of Lathrop Consolidated Treatment Plant — Lathrop, CA Mr. Ishaq is serving as Sr. Electrical Engineer for the Phase III facility expansion from 2. 5 to 4. 0 million gallons per day ( MGD). His scope of services includes designing the electrical low voltage power system expansion, the power and controls for 35+ low -voltage motors, a new 2, 000 A, 480V motor control center and creating all electrical calculations, including demand load, short circuit, voltage drop, and cable and conduit sizing.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
SR. ELECTRICAL ENGINEER 3ashar Ishac
RELATED EXPERIENCE CONT.

MBA, PE, PMP
Vallejo Waste Treatment Plant System Upgrades Project for the Arc Flash and Coordination Study — Vallejo, CA
The scope of this project included developing an arc flash and coordination study for the Vallejo Waste Treatment Plant and its 40 pump stations. Serving as Electrical Engineer, Mr. Ishaq managed the project and performed the study, which included field verification and data collection, modeling in SKM, confirmation of calculations, and writing the report of findings and recommendations.

Hamilton Cove Sewer Lift Station Renovation — Avalon, AZ PACE was hired by the Hamilton Cove Home Owners Association ( HOA) to renovate the existing sewer lift station and provide new improvements to increase the reliability, service life, and operational flexibility of the pump station. PACE is responsible for the design of the sewer lift station including a power utility service, low -voltage MCC, and four low -voltage motors. As Sr. Electrical Engineer, Mr. Ishaq is providing electrical engineering support throughout the design, reviewing and approving the electrical plans and calculations, and stamping and signing the electrical plans.

Voorhees Sewer Collection and Sewer Lift Station Upgrade — Manhattan Beach, CA As part of the City of Manhattan Beach' sWastewater Master Plan, the City identified the need to provide major rehabilitation for their Voorhees Avenue Wastewater Pump Station ( VPS). The VPS consists of a wet well and dry well subgrade concrete structure housing the mechanical and a portion of the electrical equipment, with the site located adjacent to a residential property. Electrical improvements for this project include upgrades to the power utility service, low -voltage motor control center, and two low -voltage motors. Mr. Ishaq, serving as the Sr. Electrical Engineer, is providing electrical engineering support throughout the design, creating all electrical calculations including demand load, short circuit, voltage drop, and cable and conduit sizing, and reviewing and approving the final electrical design and specifications.

DL Ranch Booster Pump Station — Lake Havasu City, AZ
Mr. Ishaq served as Sr. Electrical Engineer for a new booster pump station including a power utility service, low -voltage MCC, and 5+ low voltage motors. His scope included providing electrical engineering support throughout the design; creating all electrical calculations, including demand load, short circuit, voltage drop, and cable and conduit sizing; and reviewing and approving the final design and specifications.

Nighthawk Estates Booster Pump Station — Palm Desert, CA PACE was hired to perform final design and construction engineering services for the Nighthawk Booster Pump Station infrastructure to add to Coachella Valley Water District' s (CVWD' s) existing water system.

PACE was responsible for the design of the power utility service, low -voltage motor control center, lighting, and other miscellaneous loads. As Sr. Electrical Engineer, Mr. Ishaq is providing electrical engineering support throughout the design, creating all electrical calculations including demand load, short circuit, voltage drop, and cable and conduit sizing, and reviewing and approving the final electrical design and specifications.

System Upgrades Project for the Moccasin Powerhouse — Moccasin, CA The powerhouse has two hydroelectric generators rated 57. MVA and two generator step- u autotransformers rated 72 MVA, 230/ 115 kV -13. 8kV, providing electricity through four transmission lines.

This multi - disciplinary project' s goal is to upgrade the balance of the plant ( supporting/ auxiliary) systems/ equipment for the City and County of San Francisco. The scope includes upgrading a 13. 8kV switchgear, seven low -voltage MCCs, a direct current ( DC) auxiliary system, two excitation systems, one main control board, grid protection and control, one cooling water system, two heating, ventilation, and air conditioning HVAC) systems, and two fire suppression systems. The project commenced in 2021 and is expected to be commissioned in 2027. Mr. Ishaq served as Assistant Project Engineer during the initial project planning phase and needs assessment. Responsibilities included leading meetings, conducting site visits, spearheading stakeholder collaboration, and developing a needs assessment report with a cross -functional team of engineers.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Ernesto
Camarena

EDUCATION
AAS Computer Aided Drafting, ITT Technical Institute — 1993

YEARS OF EXPERIENCE
31-+ Years
Joined PACE in 2005

SEMINARS
TESCO New Plant and SCADA Security Regulations, Cell Modem Telemetry via 4G, High Voltage Safety Codes, Temecula, 2010 Sage Clear SCADA and SCADAPak Certification,
Los Angeles, 2009
sr. Instrumentation
controls specialist
Ernesto Camarena has automation experience spanning back to 1994. His areas of expertise include controls and automation design for wastewater and water treatment, wells, pump stations, and storage reservoirs. Mr. Camarena' sresponsibilities include preparing process and instrumentation design, process flow schematics, conceptual design exhibits including termination diagrams, and QA/C for the electrical power and controls design. Mr. Camarena is a valuable and unique designer and startup expert of water and wastewater infrastructure due to his extensive background in hands- on implementation of projects, including panel building, programming, troubleshooting, and installation in the field during construction and operations.

Because of his experience in performing water and wastewater - related controls designs and installations, Mr. Camarena also is well - versed on water/ sewer transport and treatment processes, which enable him to provide complete and accurate process and instrumentation diagrams.

RELATED EXPERIENCE
Vernon Water Well 22 Water Line Improvements and Treatment System — Vernon, CA Mr. Camarena served as the Sr. Instrumentation and Controls Specialist so the City ofVernon' s newly drilled
water well can provide up to 2, 100 gpm of potable well water into their existing distribution system. The pump is driven by a 400 -horsepower motor, and the wellhead is covered with a removable enclosure to protect the equipment. The site layout is very small and narrow, so the design minimized space used for non -essential wellhead components while leaving room to accommodate steel treatment tanks for wellhead treatment.

Huntington Beach Well 9 Wellhead Treatment System — Huntington Beach, CA Mr. Camarena served as the Sr. Instrumentation and Controls Specialist for a 2, 500 gpm ( 3. 5 MGD) treatment facility that was designed for Well 9 including six 10 -foot biologically active carbon ( BAC) filtration vessels and media, with complete structural, mechanical, electrical, and controls integration design for reliable and simple operation. Mr. Camarena designed the custom filtration control panel for this treatment system for ease of operation. PACE provided all project bid documents, permitting, coordination with Southern California Edison, and is assisting the City with the bid process and construction support services.

Water Treatment Facility for Iron and Manganese Filtration Removal — San Diego County, CA
Mr. Camarena served as the Sr. Instrumentation and Controls Specialist for the groundwater water treatment facility, built in two phases, that treats 99% of the water annually and removes iron, manganese, and arsenic to meet EPA Primary and Secondary drinking water standards. The system consists of twelve potable water wells, six irrigation wells, five potable water storage tanks and the groundwater treatment facility. A 500 gpm iron and manganese filtration system was designed and installed using a brand- new proprietary filtration media ( Penox), allowing the client to completely remove Iron and Manganese from their potable water supply without the use of complicated chemical injection systems. With the new system, simple backwashing completely restores/ regenerates the media' sremoval capacity. The system does not require costly media replacement typical with conventional systems ( i.e., green sand filters).

The backwash from the filters is sent to the wastewater reclamation facility at no cost. The media can also, in the presence of" free" ion, to remove arsenic. Lab tests revealed the filtered water had up to 50% less arsenic than the influent. PACE was able to reduce capital and operational costs significantly and still provide a total treatment capacity of 500 gpm. PACE continues to provide testing and operating supervisory oversight services while the client manages the day- to- day testing.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
SR. INSTRUVENTATION & CONTROLS SPECIALIST - Ernesto Camarena RELATED EXPERIENCE CONT. Dateland Groundwater Treatment Plant Pretreatment GAC and RO Upgrade — Dateland, AZ
Mr. Camarena provided instrumentation and controls design for this brackish groundwater potable water treatment project. PACE provided Dateland Public Service Company with several inland - desalination alternatives, engineering design, environmental permitting, and grant funding application services to improve and expand their existing groundwater reverse osmosis ( RO) treatment system which features a granular activated carbon ( GAC) pre - filtration and ion exchange ( IX) skid. The groundwater in the Dateland basin contains several trace contaminants including arsenic and fluoride, has irrigation inhibitors boron, chloride, and sodium, and overall contains high levels of total dissolved solids ( TDS). PACE was able to increase the treatment capacity to over 80, 000 GPD and increased recovery from 65 to 85%.

City of Santa Monica Sustainable Water Infrastructure Project ( SWIP) Advanced Water Recycling Facility — Santa Monica, CA
Mr. Camarena served as the Sr. Instrumentation & Controls Specialist for the design of the Advanced Water Treatment Facility (AWTF), a key component of the City of Santa Monica' sSustainable Water Infrastructure Project ( SWIP). The AWTF treats a combination of raw wastewater and harvested stormwater, producing

1. 0 MGD of purified water for groundwater augmentation. The facility is one of the first to take in raw wastewater, fully oxidize the stream via biological treatment, and provide the pathogen reduction requirements to meet California Title 22 regulations for Indirect Potable Reuse ( IPR) of 12 - log virus, 10 -log cryptosporidium, and 10 - log giardia all within one facility. The treatment process consists of a five -barrier stream: membrane bioreactor ( MBR), cartridge filtration, RO, ultraviolet advanced oxidation process UVAOP), and chlorine disinfection. The facility is the first of its kind to receive pathogen reduction credits through the cartridge filtration process. This was accomplished through the careful selection of cartridge vessels that meet the California Surface Water Treatment Rule for reduction of cryptosporidium and giardia, thus providing added benefit for a process that is typically required for RO protection but does not provide any further benefits. The cartridge filtration process has real time monitoring of differential pressure across the filter vessels, flow rate monitoring, and discharge turbidity for each train to ensure there is no breakthrough or overloading of the filtration vessels which would eliminate the pathogen reduction credits.

The AWTF is located underneath the City' s
Civic Center parking lot with the first level below ground serving as the mechanical treatment area and the second level containing the process tanks.

Santa Ana Country Club Pretreatment GAC and RO Filtration System — Santa Ana, CA As the Controls and P&ID Specialist, Mr. Camarena designed the controls for this reverse osmosis treatment system to provide a custom water source for irrigating the golf course greens at the Santa Ana Country Club. PACE developed the treatment process, utilized performance -based specifications ( a highly effective process for reducing costs and guaranteeing performance of equipment), engineering design of civil, mechanical, electrical and control systems and treated water storage systems and cost estimating. PACE also designed phase II of the system including a GAC pre -filtration system, which assists with reducing organic fouling of the desalination system.

LACFD Fire Camp 11 and Henninger Flats Campground Wells and Potable Water Treatment System — Los Angeles County, CA
Mr. Camarena served as the Sr. Instrumentation and Controls Specialist for the design of the potable water treatment systems for five remote sites owned and operated by the Los Angeles County Fire Department.

The SCADA communications, designed by Mr. Camarena, enable remote monitoring and control for the wells and treatment systems with that automatically switch to propane generators in the event of a power loss. The modular treatment facility designed provides consistency of equipment and functionality and reduces overall maintenance costs for the Fire Department. Both Fire Camp 11 and the Henninger Flats Campground contain groundwater under the influence of surface water and are therefore required to have a surface water treatment system. PACE completed evaluations of all of the camp facilities and looked at several processes and determined that the use of a packaged Rosedale filter system followed by chlorination was the most cost effective ( in both capital and operational) way to meet State regulations.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Thomas (Tom)
Gutierrez

EDUCATION
AA Applied Science, Computer Aided Drafting Technology
ITT Technical Institute — 1994

YEARS OF EXPERIENCE
314 Years
Joined PACE in 2001
With others more than 7 years
sr. cac
cesigner
Thomas Gutierrez has more than 30 years of experience in design and preparation of mechanical plans, sections, and details for engineered construction documents within the water and wastewater industry. He has in depth knowledge of mechanical systems layout, mechanical assemblies, fittings, valving, pipe materials and ratings, site grading, drainage, and utility plan/ profile design ( pressure and gravity systems). Mr. Gutierrez also has in- depth experience with design of mechanical 3D models of wastewater treatment plants for construction drawings. His 3D design and modeling experience includes design and draft BIM - ready civil 3D pipe networks, surface models, grading and basic corridors for earthwork calculations and cross sections, process piping for complete plant layouts, and mechanical process equipment ( i.e. blowers, pumps, etc.).

Mr. Gutierrez is an advanced user of Autodesk AutoCAD, Civil 3D, and MEP. He has also has the responsibility of directing CAD staff and engineers to ensure project documents are accurate, professional, and meet project goals. He is responsible for communicating with engineers and production staff to ensure all needs are met, including support, training, and solving critical task obstacles.

RELATED EXPERIENCE
Golden State Water Imperial Plant PFAS-FOA Treatment Facility — Norwalk, CA Mr. Gutierrez served as the Sr. CAD Designer for the Golden State Water Imperial Plant PFAS-FOA Treatment Facility design - build project. This project encompassed demolition of existing air stripping towers at the Golden State Water Imperial Plant Treatment Facility and construction ofa new 1,25 gpm Granular Activated Carbon Filter System to remove PFAS-FOA from the groundwater produced by two on -site water wells. PACE prepared demolition plans, grading and site detail plans, concrete foundation plans and details, mechanical interconnection piping plans and details, mechanical design and plans for a pre- treatment basket strainer system and provided construction and commissioning assistance.

City of Huntington Beach Well 9 Treatment System — Huntington Beach, CA Mr. Gutierrez served as the Sr. CAD Designer for the design ofa complete 3, 000 gpm ( 4. 3 MGD) treatment facility design was then designed including a Granular Activated Carbon ( GAC) Filtration System and media, with complete structural, mechanical, electrical, and controls integration design for reliable and simple operation. The project included multiple phases of project development, lab services, piloting, concept development, water treatment facility engineering, preparation of plans and specifications, planning division visualization graphics, and startup and operations support services on this innovative and unique treatment system.

Wellhead Iron & Manganese Treatment — South Orange County, CA Mr. Gutierrez served as the Sr. CAD Designer for a new 1, 000 gpm iron and manganese filtration system for a confidential entity at their inter - tie booster pump station with a local water district. The treatment system consists of automatic inlet pressure regulation, chlorine pre -oxidation injection, four parallel manganese dioxide filter banks, and a semi - automated treatment bypass which allows blending of low iron content well water with treated water; increasing the total capacity of the system to 1, 500 gpm. Mr. Gutierrez led the Instrumentation & Control ( I&C) group to provide full monitoring and automation of the system, which included flow and pressure metering, automatic backwash controls with online turbidity metering to minimize backwash volumes, and an innovative effluent iron concentration monitoring system, which uses a low -range turbidity meter as a surrogate for continuous iron concentration measurements.

Dateland Water Treatment Plant GAC Pretreatment Plant Upgrade — Dateland, AZ As the Sr. CAD Designer, Mr. Gutierrez was involved in this brackish groundwater potable water treatment project where PACE provided several inland -desalination alternatives, engineering design, environmental C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
SR. CA 3 DESIGNER - Thomas ( Tom) Gutierrez
RELATED EXPERIENCE CONT. permitting, and grant funding application services to improve and expand their existing groundwater Reverse Osmosis ( RO) treatment system which features a Granular Activated Carbon ( GAC) pre -filtration and ion exchange ( IX) skid. The groundwater in the Dateland basin contains several trace contaminants including arsenic and fluoride, has irrigation inhibitors boron, chloride, and sodium, and overall contains high levels of TDS. PACE was able to increase the treatment capacity to over 80, 000 gpd and increased recovery from 65 to 85%.

San Diego County Public Water System Wellhead Treatment System — San Diego, CA Mr. Gutierrez served as the Sr. CAD Designer for the design ofa groundwater water treatment facility that treats 99% of the water annually and removes Iron, Manganese, and Arsenic to meet EPA Primary and Secondary drinking water standards. The system consists of 12 potable water wells, 6 irrigation wells, 5 potable water storage tanks and the groundwater treatment facility. A 500 GPM iron and manganese filtration system was designed and installed using a brand- new proprietary filtration media ( Penox), allowing the client to completely remove Iron and Manganese from their potable water supply without the use of complicated chemical injection systems. This system was designed for a series of water wells to bring the production water to an average of 5 pg/ L
with a maximum concentration of 20 pg/ L.

Santa Monica Sustainable Water Infrastructure Project ( SWIP) Advanced Water Treatment Facility - Santa Monica, CA
The Santa Monica Water Infrastructure Project ( SWIP) is helping secure the City of Santa Monica' s water future by using the City' s existing infrastructure and linking together three new distributed water reuse elements into a single cohesive and comprehensive project to harvest, treat, and reuse non -conventional water resources. The SWIP will deliver reliable advanced treated water to be injected into local groundwater basins for indirect potable reuse via aquifer recharge, while meeting the non -potable reuse demands. Mr.

Gutierrez served as the Sr. CAD Designer for the design of the Advanced Water Treatment Facility (AWTF) with a capacity of 1. 0 MGD through the use ofa Membrane Bioreactor- Reverse Osmosis -UV Advanced Oxidation Process to treat municipal wastewater, stormwater, and dry weather runoff to replenish the groundwater aquifer, making the facility an indirect potable reuse system.

Los Angeles Country Club Wells and Ozone Injection — Los Angeles, CA Mr. Gutierrez was the Sr. CAD Designer for the study that determined the best approach to improving irrigation water quality for the LACC which led to the design - build of an ozonation water treatment system. LACC was plagued with three main issues with their irrigation water supply, 1) odorous and corrosive hydrogen sulfide in the groundwater supply causing unpleasant odors around the golf course and damaging the irrigation storage tank and distribution system, 2) poor turf conditions and high maintenance due to water quality, and 3) borderline brackish groundwater quality with high levels of bicarbonate and moderate levels of sodium and chloride. The selected solutions include a 130 lb/ day ozonation system for oxidizing the excess sulfide, installation ofa third groundwater well, rehabilitation of the existing 800, 00 gallon water storage tank, and chemical injections into the turf to reduce excessive bicarbonate alkalinity. The ozonation system includes new piping, instruments, ozone generation skid, injection skid and pump from tank, liquid oxygen storage and controls.

Potable Water Treatment System Design — LACFD Fire Camp 11, Fire Camp 13, Fire Camp 14, Fire Camp 19, and Henninger Flats Campground — locations throughout Los Angeles County, CA
Mr. Gutierrez designed upgrades to aging potable water treatment systems for five remote sites owned by the Los Angeles County Fire Department to meet current Los Angeles County Department of Public Health regulations. 100 -year flood elevations were determined to design revetments needed to protect the source wells from flooding along the Upper San Gabriel River and San Francisquito Canyon Creek. PACE designed a modular surface water treatment facility that could be tailored to each site to achieve consistency of equipment and functionality and reduce overall maintenance costs for the Fire Department. Wells and treatment systems were designed with SCADA communications to enable remote monitoring and automatic switching to emergency propane generators in the event ofa power loss. PACE also provided the Fire Department with Operations Plans for regulatory compliance, prepared annual Consumer Confidence Reports, and assisted in obtaining permits.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES

YEARS WITH FIRM
33 YEARS IN THE INDUSTRY
44 EDUCATION
BS, Engineering, Arizona State University
MBA Business, University of Phoenix

PROFESSIONAL REGISTRATIONS
Structural Engineer:

AZ # 19304
CA # S5526

IL, NV, OK, WA
Professional Engineer:

NY # 94184

AR, MI, WV
California Safety Assessment Program
Certificate
City of Phoenix Planning and Development
Department Self -Certification Plan Check
Program Registration # 0055

PROFESSIONAL AFFILIATIONS
AISC
PCI
SEAoA
If CONSULTING STRUCTURAL ENGINEERS

PK ASSOCIATES
JACK M. KOEHLER, PE, SE

PRINCIPAL I CO- FUNDER
Jack has practiced structural engineering for 44 years. His extensive experience includes engineering design, project management, value engineering and peer reviews. He brings unparalleled knowledge and expertise in seismic design, project management, value engineering and structural system selection.

RELATED EXPERIENCE

LIBERTY UTILITIES MONUMENT WELL SITE IMPROVEMENTS
Litchfield Park, AZ
Well site arsenic treatment improvements including slabs on grade for an electrical/ chemical container, generator, and filter vessel; a below grade storage tank beneath future filter vessels; an 8' CMU block wall; and extending a 6' CMU wall to 8'.

GOLDEN STATE WATER IMPERIAL PLANT PFAS TREATMENT FACILITY Norwalk, CA
Design of a new slob on grade foundation for an activated carbon filter system.

CAL WATER TANK MIXING & CHLORO IMPROVEMENTS I LA County, CA Tenant improvements including six foundations for two fiberglass -reinforced plastic ( FRP) buildings at three sites, a new concrete pad for a trailer, and modifications to an existing masonry building including enlargements to a door opening, and removal of a partition wall.

DESERT RETREAT WET WELL I Indio, CA
New 18" x 12" x 17'6" deep CIP concrete wet well under existing pump station.

OAKLEY STORM PUMP STATION I Oakley, AZ
Structural plans and calculations for a 900 SF pump station placed over a below grade precast wet well designed by others.

MOUNTAIN HOUSE LAKE 1 I Mountain House, CA
Single story pump station (45' x 51') over a precast wet well ( 20' x 14').

JEROME WWTP I Jerome, AZ
SBR facility ( 3T x 46' x 17' deep) with a concrete headworks area and 400 SF blower CMU building. Project is on a
sloped site, requiring varying
retained heights and additional retaining walls.

TURNOUT PUMP STATION I Tracy, CA
15' deep x 10' wide x 20' long cast -in -place concrete below grade pump station.

RIDGEMOOR PUMP STATION I Riverside County, CA
3, 000 -gallon surge tank equipment pad, 750 -gallon surge tank equipment pad, 150 kw generator equipment pad, concrete base/ encasement for vertical turbine pump, light pole foundations, and electrical shade structure.

GREAT PARK IMPROVEMENTS I Irvine, CA
Two multi -function lakes, four retaining walls, an Upper Lake overflow box/ structure, and four pump stations with single story CMU buildings.

STRUCTURAL INTEGRITY I COLLABORATIVE SOLUTIONS
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
IfCONSULTING STRUCTURAL ENGINEERS

PK ASSOCIATES
JACK M. KOEHLER, PE, SE
PRINCIPAL i CO- FUNDER
RELATED EXPERIENCE ( continued)
CITY OF PATTERSON WWTP IMPROVEMENTS I Patterson, CA
New above ground concrete headworks tank, oxidation ditch improvements, partially above ground MBR concrete tank, and asingle -story masonry blower building.

CHINO VALLEY WRF IMPROVEMENTS I Chino Valley, AZ
Improvements including equalization tanks ( 35' x 68' x 13'), drying beds, equipment pads, and steel -framed shade structure over a off -site lift station.

SUNDANCE WRF PHASE II I Buckeye, AZ
Modifications of existing WWTP tank walls for SBR tanks 3-6, new RAS channel, new headworks screen concrete structure, grit vortex system concrete structure, MBR basin structure and overhead crane, and equipment pads.

SARIVAL WATER RECLAMATION FACILITY ( SWRF) I Goodyear, AZ New single story administration building, integrated process mechanical building ( with headworks room, blower room, MBR pumping room, and electrical and controls Room), a separate integrated process mechanical building ( with sludge dewatering room, odor control room/ yard, and chemical storage room), secondary biological tank, membrane separation tank, and chlorine contact basin/ recycled water pump station.

SAN LUIS WWTP 3MGD EXPANSION I San Luis, AZ
New tank interior wall for SBR tanks 1-4; new RAS channel; headworks screen support stand, platform, and stairways; grit vortex system concrete structure; sludge dewatering unit support stand, platform, and stairways; chemical bay and shade structure; generator and equipment pads; and inspection and corrective active for concrete deterioration at existing tank walls and walkways.

SONORA WASTEWATER TREATMENT PLANT EXPANSION I Sonora, CA Expansion included an administration building, a headworks building, two 65' -diameter clarifiers, and a filter and chlorine contact basin. These new facilities have the capacity to handle up to 2. 5 MGD.

MOUNTAIN HOUSE WRF EXPANSION I Mountain House, CA
Expansion of existing influent lift station included new headworks/ dewatering building over 4 below -grade digester tanks, 5,00 SF headworks/ gait removal structure, influent control structure, CIP concrete structural divider walls in two tanks, and 13, 000 SF MBR process structure.

VISTA CANYON WRP I Santa Clarita, CA
Below -grade concrete tank ( with catwalks at grade level) adjacent to three below -grade concrete tanks with an above - grade building for an office, electrical room and mechanical room, as well as a steel framed canopy and facade walls at exposed tank and 4' site retaining wall.

STRUCTURAL INTEGRITY I COLLABORATIVE SOLUTIONS
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES

YEARS WITH FIRM
13 EDUCATION
BS, Civil Engineering, Minor in
Mathematics, Seattle University

PROFESSIONAL REGISTRATIONS
Professional Engineer:

AZ # 70374

PROFESSIONAL AFFILIATIONS
SEAOA

PK ASSOCIATES

CONSULTING STRUCTURAL ENGINEERS

JAMES APPLEYARD

PROJECT MANAGER I SENIOR ASSOCIATE
James has 13 years of experience as a structural designer with expertise in wastewater collection and treatment system structures. As Project Manager, he will follow the design from beginning to end, with responsibilities including structural design and analysis, calculations and structural details, and construction administration.

RELATED EXPERIENCE

LIBERTY UTILITIES MONUMENT WELL SITE IMPROVEMENTS
Litchfield Park, AZ
Well site arsenic treatment improvements including slabs on grade for an electrical/ chemical container, generator, and filter vessel; a below grade storage tank beneath future filter vessels; an 8' CMU block wall; and extending a 6' CMU wall to 8'

GOLDEN STATE WATER IMPERIAL PLANT PFAS TREATMENT FACILITY Norwalk, CA
Design of a new slab on grade foundation for an activated carbon filter system.

CAL WATER TANK MIXING & CHLORO IMPROVEMENTS I LA County, CA Tenant improvements including six foundations for two fiberglass -reinforced plastic ( FRP) buildings at three sites, a new concrete pad for a trailer, and modifications to an existing masonry building including enlargements to a door opening, and removal of a partition wall.

CHINO VALLEY WRF IMPROVEMENTS I Chino Valley, AZ
Improvements including equalization tanks ( 35' x 68' x 13'), drying beds, equipment pads, and steel -framed shade structure over a off -site lift station.

DESERT RETREAT WET WELL I Indio, CA
New 18" x 12" x 17'6" deep CIP concrete wet well under existing pump station.

LATHROP CTF DECHLORINATION EXPANSION I Lathrop, CA
2,00 SF expansion for an above ground concrete contact basin and adjacent shade structure.

RIDGEMOOR PUMP STATION t Riverside County, CA
3, 000 -gallon surge tank equipment pad, 750 -gallon surge tank equipment pad, 150 kw generator equipment pad, concrete base/ encasement for vertical turbine pump, light pole foundations, and electrical shade structure.

SONORA WASTEWATER TREATMENT PLANT EXPANSION I Sonora, CA Expansion included an administration building, a headworks building, two 65' -diameter clarifiers, and a filter and chlorine contact basin. These new facilities have the capacity to handle up to 2. 5 MGD.

WINSLOW WWTP EXPANSION I Winslow, AZ
Expansion including two concrete clarifier tanks, below grade RAS/ WAS pump station, flow equalization basin, below grade flow equalization basin pump station, slab on grade for headworks ( screen), blower equipment pads and foundations and slab on grade for pre -manufactured metal building.

STRUCTURAL INTEGRITY I COLLABORATIVE SOLUTIONS
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF I
V
PACE

APPENDIX // RESUMES
Joe brings more than 30 years of experience in project management, levee design, flood control structures, riparian corridor restoration, probabilistic seismic hazard and site response analysis, large hillside grading design, pavement design, hydrologic evaluation, and development of foundation criteria. He was a participating member of the California Department of Water Resources Urban Levee Design Criteria development committee. The committees purpose was to develop levee design criteria for Urban and Urbanizing areas that require a 200 -year level of protection as defined in Senate Bill 5.

Through his years of experience across a wide range of project types, sizes, regulatory environments, and procurement methodologies, Joe has developed an ability to advise ENGEO' s clients through challenging design and construction related situations.

Select Project Experience
4 Million Gallon Water Reservoir
at Newhall Ranch —Los Angeles
County, CA
Principal in Charge. Joe provided quality
control and oversight for the geotechnical
aspects of the water reservoir design, as
well as construction phase earthwork
testing and special inspection services. The
water reservoir consists of a welded steel
tank supported on a concrete ring footing
foundation. The reservoir is part of the
Newhall Ranch master planned development
covering over 15, 000 acres including
200 million cubic yards of earthwork that
will result in more than 20, 000 houses;
commercial development; a wastewater
treatment plant; multiple schools and
parks with hundreds of miles of associated
roadways and underground utilities,
Water Storage Tanks and Sewer
and Water Pump Stations, River
Islands — Lathrop, CA
Principal in Charge. Joe served as Principal
in Charge for geotechnical exploration for

1. 5 MG and 1. 0 MG water storage tanks and
sewer and water pump stations. The project
site is located in the southeastern portion
of the River Islands Development project.

Improvements include the construction of
a 1. 5 Million Gallon ( MG) tank and a 1. 0 MG
tank of steel construction, two water pump
stations, one sewer pump station, paved
access roads, and underground utilities.

Central Delta Water Agency —
Stockton, CA
Principal in Charge. Joe provided oversight
for the geotechnical peer review on behalf
of the Central Delta Water Agency. The
proposed project consists of creating
water storage reservoirs on existing delta
islands to provide increased resiliency to
regional and/ or State water users. Several
potential project impacts were identified
during the environmental review of the
project including the potential for increased
seepage into the adjacent islands. The
potential seepage is sometimes referred
to as ' interisland' seepage and is a result
of near surface permeable soil layers that
provide subsurface hydraulic conductivity
between adjacent delta islands while
remaining hydraulically disconnected from
the intervening waterway. On behalf of the
Central Delta Water Agency, ENGEO worked
with the project' sgeotechnical consultant to
develop a monitoring program and mitigation

EDUCATION
MS Civil Engineering, University
of California at Berkeley, 1995
BS Civil Engineering, San Jose
State University, 1994

EXPERIENCE
Years with ENGEO: 27
Total Years of Experience: 31

REGISTRATIONS &

CERTIFICATIONS
Geotechnical Engineer
CA - GE 2677
Civil Engineer CA - CE 58282

SPECIALIZATIONS
Compressible Soils
Construction Observation
Creek Stabilization
Restoration Rood Control
Structures Grading
Project Management
Hillside Grading
Levee Analyses
Plans, Specifications,
and Estimates

AFFILIATIONS
FMA - Floodplain Management
Association
E_ t!G7EO
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES

APPENDIX // RESUMES
Josef J. Tootle, PE, GE ( continued)
intervention protocols to prevent detrimental subsurface seepage impacts on the adjacent islands.

College Area Sewer Rehabilitation —
San Diego, CA
Principal in Charge. Joe provided quality control and oversight for design of the project. The College Area sewer rehabilitation project consisted of replacing over 2, 000 lineal feet of aging sanitary sewer infrastructure. The project alignment is located in the College West neighborhood of San Diego, California, and transverses relatively steep canyon terrain with limited construction access.

As part of ENGEO' s on -call contract with the City of San Diego, our work scope included providing geotechnical
recommendations for the trenchless installation segment of the sewer replacement project. Trenchless installation methodologies were preferred given the steep topography and constrained site access; however, the local geologic conditions included soils and bedrock conditions with very hard oversized particles that could present significant constructability challenges to trenchless installation.

Water Storage Tanks and Sewer and Water Pump
Stations, River Islands — Lathrop, CA
Principal in Charge. Joe served as Principal in Charge for geotechnical exploration for 1. 5 MG and 1. 0 MG water storage tanks and sewer and water pump stations. The project site is located in the southeastern portion of the River Islands Development project. Improvements include the construction of a 1, 5 Million Gallon ( MG) tank and a 1. 0 MG tank of steel construction, two water pump stations, one sewer pump station, paved access roads, and underground utilities,
Rohnert Park, Anderson 128 Reservoir—
Rohnert Park, CA
Principal in Charge. Joe provided project management for the geotechnical exploration and developed geotechnical design recommendations for the project. The University District potable water reservoir project is located on a 128 acre site located east of Petaluma Hill Road in Rohnert Park, California. The water reservoir consists of a steel tank located in approximately 20 feet of cut at an elevation of 250 feet. Development of the project site includes the construction of an access road off of Petaluma Hill Road and a steel arch culvert that spans a protected wetland drainage.

Central Delta Water Agency —Stockton, CA
Principal in Charge. Joe provided oversight for the geotechnical peer review on behalf of the Central Delta Water Agency. The proposed project consists of creating water storage reservoirs on existing delta islands to provide increased resiliency to regional and/ or State water users. Several potential project impacts were identified during the environmental review of the project including the potential for increased seepage into the adjacent islands. The potential seepage is sometimes referred to as ' interisland' seepage and is a result of nearsurface permeable soil layers that provide subsurface hydraulic conductivity between adjacent delta islands while remaining hydraulically disconnected from the intervening waterway. On behalf of the Central Delta Water Agency, ENGEO worked with the project' s geotechnical consultant to develop a monitoring program and mitigation intervention protocols to prevent detrimental subsurface seepage impacts on the adjacent islands.

City of Lathrop Water Recycling Plant Phase 2
Expansion —Lathrop, CA
Principal in Charge. Joe provided Principal review of the geotechnical exploration for the water recycling plant. The Phase 2 expansion of the water recycling plant includes the addition of storage tanks, pump stations, holding basins, and additional structures.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
Randy Hildebrant, PE, GE
Associate
Randy serves a variety of private and public works projects including transit stations; mass grading; arenas, port and harbor facilities; commercial and residential developments; landslide evaluation and stabilization; bridges; schools; and forensic geotechnics. His design experience includes the analysis and mitigation of liquefaction potential; design of reinforced earth retaining wall systems; design of shallow and deep foundations; pavement analysis; groundwater modeling; and slope instability. Randy has managed projects totaling over 10 million cubic yards of geotechnical remedial and civil grading.

He routinely serves all tasks of the project, including the field exploration, analysis and design, technical report preparation, consultation during construction, and project management.

With his variety of project experience and understanding of a project' sfull life cycle, Randy has a track record of providing practical and cost- effective or schedule - effective solutions to various design and construction challenges, including collaborating with other team members to modify a project feature to save overall cost and/ or schedule while improving geotechnical aspects.

Select Project Experience
Treasure Island Sub Phase 1A
Geotechnical Services — San
Francisco, CA
Project Engineer. Randy performed analysis
to develop geotechnical recommendations
for design and mitigation in support of
the development of Yerba Buena Island
and Treasure Island. To support the
redevelopment of Treasure Island, three
large 80 -foot diameter concrete tanks were
constructed atop a hillside on Yerba Buena
Island. Randy' s analysis included site specific
ground motion hazard analysis, slope stability,
foundation design, and tank foundation and
settlement recommendations.

Mare Island Sanitary Sewer
Rehabilitation Phase II —Vallejo, CA
Staff Engineer. Randy provided consultation
services and provided geotechnical
recommendations for mitigation of highly
compressible bay mud at the project site.

This project consisted of a 22 -inch diameter
force sewer main and associated structure
improvements along Railroad Avenue
and G Street.

Phase 1 Lake Circulation Pump
Station — Lathrop, CA
Project Engineer. Randy performed
analysis of liquefiable and compressible
soil to determine applicable foundation and
basement wall recommendations for design.

This project consisted of a 56 -feet by 31 - feet
pump station building constructed with
concrete masonry units over an approximate
25 -foot deep wet well. The pump station
serves as a recirculation pump to a proposed
manmade lake within a masterplanned
residential development. Geotechnical
challenges included liquefiable and
compressible soils and well as temporary
excavations.

Pasa Tiempo Golf Course 1 MG
Below Grade Recycled Water
Storage Tank —Santa Cruz, CA
Project Engineer. Randy performed the
initial field exploration and acted as project
engineer providing geotechnical design
parameters to the design team for both tank
and site design. The water storage tank
consists of a 500, 00 gallon, wire and strand

EDUCATION
MS Geotechnical Engineering,
UC Berkeley, 2010
BS Civil Engineering, Cal Poly
San Luis Obispo, 2009

EXPERIENCE
Years with ENGEO: 16
Total Years of Experience: 16

REGISTRATIONS &

CERTIFICATIONS
Civil Engineer, CA -CE 79940
Geotechnical Engineer,
CA -GE 3090
Civil Engineer, HI 20795
Civil Engineer, GU 2211
Civil Engineer, CMNI 591
Hazmat Certified as Required
by USDOT and IATA, CA
Radiation Safety
Officer, CA 18577

SPECIALIZATIONS
Compressible Soils
Foundation Design
Groundwater Modeling
Hillside Grading
Liquefaction Analyses
Pavement Evaluation
and Design
Slope Stability
NGEO
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES

APPENDIX // RESUMES
wound, circular, prestressed castinplace concrete tank. The tank is approximately 70 -feet in diameter and roughly 23 -feet in height. The tank is partially buried to a depth of approximately 15 to 20 -feet. Ancillary structures include a filter building, restroom, and pumphouse is also constructed as part of the overall project.

City of Brentwood Pipeline O' Hara Ave to Hwy 4
Bypass Road —Brentwood, CA
Staff Engineer. Randy performed the field exploration and assisted in composing the geotechnical exploration report. This project consisted of a 7, 600 -foot long 12 - inch nonpotable water line that connects to the existing water lines at the intersection of Grant Street and O' Hara Avenue.

Diablo Canyon Power Plant Decommissioning —
Avila Beach, CA
Associate Engineer. Randy is performing third - party peer - review services for the geotechnical and geologic aspects of the power plant decommissioning on behalf of the County of San Luis Obispo. Environmental analysis included addressing landslides, bluff retreat, liquefaction, seismic shaking, erosion, and paleontologic resources. ENGEO is also providing geologic and geotechnical review services on an as -requested basis for the County of San Luis Obispo and regularly participates in coordination between a multitude of stakeholders.

Ocean Blvd Improvement — Pismo Beach, CA
Geotechnical Engineer. Randy is leading the revision to the design, construction plans, and construction bid documents for the Component B Storm Drain Repair portion of the Ocean Boulevard project. ENGEO provided coastal engineering and geotechnical consulting services for the stabilization of the coastal bluffs along Ocean Boulevard in Pismo Beach. Coastal erosion from January 2017 severe winter storm events and subaerial erosion threatened public infrastructure including the roadway and utilities. A replacement beach access stairway and repair of damaged storm drain facilities were incorporated into the bluff retention structures. Funding the project was provided by FHWA through Caltrans. ENGEO prepared plans and specifications for the coastal bluff stabilization structures in addition to an engineer' sestimate of the construction cost. ENGEO' s environmental subconsultant assisted with permit preparation and processing with Caltrans and the California Coastal Commission. Engineering support services were provided during construction and the City celebrated the completion of the project in 2023. ENGEO is currently completing the design of another section of coastal bluff that will be stabilized after a delay due to potential cultural resources in this area. ENGEO has also provided similar services in the past to the City of Pismo Beach for other portions of the community' scoastal bluff. In addition, we are currently preparing geologic and coastal engineering evaluations on other City- and privately -owned coastal properties that are at risk due to coastal erosion.

Chimney Rock Road at Franklin Creek
Restoration Project (PS1743)— Paso Robles, CA
Project Manager. Randy acted as the Project Manager,
performing various analyses, and coordinating design
geotechnical recommendation with the project design team.

The County of San Luis Obispo ( County) experienced a series of stormrelated washouts of the existing 8 -foot diameter double culvert crossing beneath Chimney Rock Road in early 2023, which created an 80 -foot long, 50 -foot deep scour pit. The County created an emergency temporary bypass
April 2023) with riprap rock slope protection ( RSP) and a temporary onelane bridge over Franklin Creek ( June 2023) to replace the washedout culvert crossing. The purpose of the proposed project is to replace the temporary crossing with a permanent bridge.

The permanent bridge will consist of a new twolane bridge over Franklin Creek that will span 175 -feet. The bridge deck will consist of a concrete box girder that is founded on 48 - inch diameter castindrilledhole ( CIDH) piles. The design of the bridge and improvements will generally be in accordance with Caltrans methodology. Challenges of the project include presence of existing fill, variable bedrock depth, potentially liquefiable soil and significant kinematic loads onto the piles due to lateral spread.

C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
mAcKAY& comps ENGINEERS PLANNERS SURVEYORS

LENNY MARTINEZ, PLS - SENIOR SURVEYOR

EXPERIENCE

OVERVIEW

MAJOR PROJECT

EXPERIENCE

EDUCATION,

REGISTRATIONS &

CERTIFICATIONS
Mr. Martinez is a Senior Surveyor with over 20 years of field and office surveying experience. His expertise includes geodetic control surveys, large corridor surveys for highways, easements and canals, topographic surveys, boundary surveys, Mapping, GIS, and implementation of advanced survey technologies. Lenny has been in responsible charge of several complex surveying projects, all of which were completed successfully.

Zone 7 Rehabilitation of Flood Control Channels ( Tri- Valley, CA) - Directed topographical surveys and control for approximately 60 repair locations throughout the tri- valley area utilizing GPS surveying, supplemented by traditional survey methods. Mr. Martinez designed an RTK GPS network that would fully encompass the Zone 7 project area and enable the site surveys to be conducted from a single, roof - mounted GPS base station, located and monitored from MacKay & Somps headquarters in Pleasanton, CA.

Mountain House Creek Raw Water Storage ( Mountain House, CA) — Using advanced LiDAR Drone technologies, Mr. Martinez and his survey team completed a precise geodetic control network to facilitate the aerial mapping of a 350 acre, 3 -mile corridor of Mountain House Creek. The thick vegetation, sensitive habitats, and limited access required implementation of LiDAR and GPS technologies.

East Bay Regional Parks District & Midpeninsula Regional Open Space District — On - Call Surveying Services — As manager of survey operations, Mr. Martinez is responsible for ongoing client communications and survey project management in support of various engineering and survey related projects.

Central Lathrop, Lathrop Gateway & South Lathrop Specific Plans ( Lathrop, CA) Various ongoing land development projects in the City of Lathrop are designed by MacKay & Somps and fully supported by the MacKay & Somps engineering and survey teams. The ongoing survey support from our Pleasanton survey teams requires boundary and topographic surveying; preparation of Parcel Maps, Final Maps, Record of Surveys and ALTA surveys; preparation of plats and legal descriptions and continued construction staking support. Mr. Martinez provides survey oversight to ensure overall project success.

QA Survey Manager —San Francisco -Oakland Bay Bridge ( Shanghai, China) - Mr.

Martinez was the Senior Surveyor as a consultant to Caltrans for Quality Assurance surveying on the fabrication of the San Francisco - Oakland Bay Bridge Self Anchored Suspension Span in Shanghai, China. Survey decisions made incorporated all survey process development and execution.

United States Marine Corps (Various Locations) — Sgt. Martinez acted as a Fire Direction Control Specialist and Field Artillery Surveyor where mathematical calculations and measured angles and distances were critical to success and survival.

State of California Professional Land Surveyor — PLS No. 9368 Associate of Arts degree in Business Management
Marine Corps combat Veteran
DOT/ FAA Licensed Drone Pilot
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE

APPENDIX // RESUMES
MACKAY 8c somPs ENGINEERS PLANNERS SURVEYORS
TRAVIS PASHON- SILVA, P. E. - SENIOR ENGINEER/ PROJECT MANAGER

EXPERIENCE

OVERVIEW

MAJOR PROJECT

EXPERIENCE

EDUCATION,

REGISTRATIONS &

CERTIFICATIONS

REFERENCES
Travis has 12 years of experience managing public infrastructure projects, including previous stream repair projects. Travis' s experience includes creek rehabilitation, utility infrastructure design and master planning, and analysis of storm, sewer and water systems. Recently he is primarily working on utility infrastructure at Stanford University.

East Bay Regional Parks District — Redwood Regional Park — FEMA Stream Repairs Oakland, CA) Design of stream and trail repairs for eleven locations designated by the District at Redwood Regional and Anthony Chabot Parks in Oakland. Natural slope protection improvements such as log crib walls were implemented to preserve the natural aesthetic of the parks. Repairs also included stream widenings and realignments, trail reinforcements, and culvert repairs.

Zone 7 Rehabilitation of Flood Control Channels Phases 1-3 (Alameda County, CA) Phased over three years, the rehabilitation project has identified and repaired Zone 7 flood control channels in Livermore, Dublin and Pleasanton. Throughout the three phases, both emergency and routine repairs were completed. Natural repairs were implemented where feasible to limit environmental impacts.

East Campus Utility Improvement Project ( Stanford, CA) - Design of over six miles of utilities infrastructure estimated at $ 20 million to support the East Campus Redevelopment and Stanford University' sutility master plan. Because Stanford' s utility system was established in the 1800' s, each infrastructure project is challenged by highly congested utility corridors.

Main Quad Utility Improvement Project (Stanford, CA)- Improving over 2 miles of aging utilities, including sewer, storm drain, and domestic water replacement. Project was phased over three years to minimize student and faculty disturbance.

Felt Lake Transmission Improvements/ Lakewater Heat Exchange ( Stanford, CA)- In order to improve Stanford' s irrigation and thermal utility operations, we designed over 5, 000 feet of lakewater pipe connecting Stanford' s energy plant to Felt Lake, including over 2, 000 feet of horizontal directional drilling.

Bachelor of Science in Civil Engineering, Cal Poly San Luis Obispo, 2013 Registered Civil Engineer # 87507
Steve Bui
Director, Civil Projects
Stanford University
415) 609- 2099
Katy Hornbeck
Grants Manager
East Bay Regional Park District
510) 544- 2204
Edward Reyes
Principal Engineer
Zone 7 Water Agency
925) 784- 3218
C644 // CITY OF LATHROP PROFESSIONAL ENGINEERING SERVICES FOR THE ADDITION OF TREATMENT FOR PFAS AT THE LAWTF PACE PACE Advanced Water Engineering
17520 Newhope Street, Suite 200
Fountain Valley, CA 92708
714. 481. 7300 I pacewater. com

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