Calexico City Council
July 3, 2024

AGENDA
ITEM
15 OCAL ACO AGENDA
CALEXICO California ITEM

WHERE CALIFORNIA AND MEXICO MEET
15 CITY COUNCIL

AGENDA STAFF REPORT
DATE: July 3, 2024
TO: Mayor and City Council
APPROVED BY: Juan Contreras, Acting City Manager ARe
REVIEWED BY: Sandra L. Fonseca, Interim Finance Director PREPARED BY: Lilliana Falomir, Public Works Manager - Administrative Telen SUBJECT: Authorize Acting City Manager to Sign Agreement of Professional Services between the City of Calexico and LEE & RO, Inc. in the Amount of $282,814.00 for Engineering Design Services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System at Water Treatment Plant and Eastside Water Reservoir. ========================================≤===
Recommendation:

Authorize Acting City Manager to Sign Agreement of Professional Services between the City of Calexico and LEE & RO, Inc. in the Amount of $282,814.00 for Engineering Design Services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System at Water Treatment Plant and Eastside Water Reservoir.

Background:

On March 28, 2024, the City of Calexico Public Works Department began requesting proposals from qualified engineering professionals to provide engineering design services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System. The City proposes to convert from a gaseous chorine system to a 12.5% bulk sodium hypochlorite disinfection system.

The City owns and operates a Water Treatment Plant ("WTP") and Eastside Water Reservoir ("EWR"). The WTP receives its water supply from the Colorado River through the Imperial Irrigation District's ("|ID") canal. The City's WTP has a design capacity of 14 Million Gallon per Day ("MGD"), with an average daily demand of 9 MGD and current peak flow of 7-8 MGD. The EWR has a design capacity of 6 MGD, with an average daily demand of 1.25 MGD. Both the WTP and EWR currently operate on gaseous chlorine water disinfection system to disinfect the water prior to discharging it into the City's supply lines. The City has concerns regarding the usage of chlorine gas as a disinfectant, as chlorine gas is toxic and poses dangers to the public and operations staff. The WTP is located adjacent to residential and commercial areas, schools and the Calexico International Border and the EWR is located adjacent to residential area. Both facilities pose a significant high risk of chlorine gas exposure to the public.

Since FY2018-2019, the City has been budgeting Water Enterprise funds for this project. City staff has done its absolute best to provide maintenance to both facilities but now the chlorine facilities are out of date and are not in compliance. In addition, it has been exceedingly difficult to find replacement parts and/or vendors who will come to service and repair the chlorine systems because both facilities pose a considerable risk for potential liability. As of today, the City of Calexico is the only City in the Imperial Valley that has not made the switch from gaseous chlorine to liquid hypochlorite.

With the conversion of Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System the City with have a cost savings on the following operation and maintenance:
• Certified Unified Program Agency (CUPA) Annual Permit ($5,000 per year) • CUPA California Accidental Release Prevention Program ($18,000 every 5 years) • Annual Chlorine System Maintenance at WTP and EWR ($50,000 per year) • Annual Quantitative Fit Testing ($1,800 per year)
• Replacement of Scrubbers at WTP and EWR ($152,000 every 10 years) Discussion and Analysis:

On April 18, 2024, the Office of the City Clerk received one (1) proposal from the following company:

Company Amount
LEE & RO, Inc. $282,814.00
City staff has reviewed LEE & RO, Inc. proposal and recommends that the City Council of the City of Calexico authorize the City Manager to sign Agreement of Professional Services between the City of Calexico and LEE & RO, Inc. in the amount of $282,814.00 for Engineering Design Services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System at Water Treatment Plant and Eastside Water Reservoir.

Fiscal Impact:

Capital Improvement Program Budgeted Item for FY 2023-2024 Fund No. 516-90-987-56000-000 $282,814.00
Total $282,814.00
Coordinated With:

City Manager's Office.
2 Finance Department.

Public Works Department.

Attachment(s):

1. Agreement of Professional Services between City of Calexico and LEE & RO, Inc.

2. Request for Proposals for Engineering Design Services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System at Water Treatment Plant and Eastside Water Reservoir.

3. Letter from PureAir Filtration dated October 20, 2023.

4. Letter from Ruiz & Associates dated May 15, 2024.
3 ATTACHMENT NO. 1

AGREEMENT FOR PROFESSIONAL SERVICES
This Agreement is made and entered into as of the 3rd day of July, 2024, by and between the City of Calexico ("City") and LEE & RO, Inc. ("Consultant").

RECITALS
A. Consultant is specially trained, experienced and competent to perform the special services which will be required by this Agreement; and
B. Consultant possesses the skill, experience, ability, background, certification and knowledge to provide the services described in this Agreement on the terms and conditions described herein.

AGREEMENT

1. Scope of Services. The Consultant shall furnish the following services in a professional manner. Consultant shall perform the services described on Exhibit A which is attached hereto and incorporated herein by reference. Consultant shall provide said services at the time, place, and in the manner specified in Exhibit A, subject to the direction of the City through its staff that it may provide from time to time.

2. Time of Performance. The services of Consultant are to commence upon execution of this Agreement and shall continue until all authorized work is approved by the City. All such work shall be completed no later than June 31, 2025. Time is of the essence for every provision of this agreement that states a time for performance and for every deadline imposed by the City.

Compensation. Compensation to be paid to Consultant shall be as set forth in Exhibit B, which is attached hereto and incorporated herein by reference. Payment by City under this Agreement shall not be deemed a waiver of defects, even if such defects were known to the City at the time of payment.

4. Method of Payment. Consultant shall submit monthly billings to City describing the work performed during the preceding month. Consultant's bills shall include a brief description of the services performed, the date the services were performed, the number of hours spent and by whom, and a description of any reimbursable expenditures. City shall pay Consultant no later than 30 days after approval of the monthly invoice by City staff.

Ownership of Documents. All plans, studies, documents and other writings prepared by and for Consultant, its officers, employees and agents and subcontractors in the course of implementing this Agreement, except working notes and internal documents, shall become the property of the City upon payment to Consultant for such work, and the City shall have the sole right to use such materials in its discretion without further compensation to Consultant or to any other party. Consultant shall, at Consultant's expense, provide such reports, plans, studies, documents and other writings to City upon written request.
6 Independent Contractor. It is understood that Consultant, in the performance of the work and services agreed to be performed, shall act as and be an independent contractor and shall not act as an agent or employee of the City. Consultant shall obtain no rights to retirement benefits or other benefits which accrue to City's employees, and Consultant hereby expressly waives any claim it may have to any such rights.

7. Interest of Consultant. Consultant (including principals, associates and professional employees) covenants and represents that it does not now have any investment or interest in real property and shall not acquire any interest, direct or indirect, in the area covered by and during this Agreement or any other source of income, interest in real property or investment which would be affected in any manner or degree by the performance of Consultant's services hereunder. Consultant further covenants and represents that in the performance of its duties hereunder no person having any such interest shall perform any services under this Agreement.

Consultant is not a designated employee within the meaning of the Political Reform Act because Consultant:
a. will conduct research and arrive at conclusions with respect to his/her rendition of information, advice, recommendation or counsel independent of the control and direction of the City or of any City official, other than normal agreement monitoring; and
possesses no authority with respect to any City decision beyond rendition of information, advice, recommendation or counsel. (FPPC Reg. 18700(a)(2).) Professional Ability of Consultant. City has relied upon the professional training and ability of Consultant to perform the services hereunder as a material inducement to enter into this Agreement. Consultant shall therefore provide properly skilled professional and technical personnel to perform all services under this Agreement. All work performed by Consultant under this Agreement shall be in accordance with applicable legal requirements and shall meet the standard of quality ordinarily to be expected of competent professionals in Consultant's field of expertise.

9. Indemnity. Consultant agrees to indemnify, including the cost to defend, the City, and its officers, agents and employees from any and all claims, demands, costs or liability that arise out of, or pertain to, or relate to the negligence, recklessness, or willful misconduct of Consultant and its agents in the performance of services under this contract. This indemnity does not apply to liability for damages for death or bodily injury to persons, injury to property, or other loss, damage or expense arising from the sole negligence, willful misconduct or defects in design by the City or its agents, servants, or independent contractors who are directly responsible to the City, or the active negligence of the City. 2 To the fullest extent permitted by law, the Consultant shall (1) immediately defend and (2) indemnify the City, and its councilmembers, officers, agents, and employees from and against all liabilities regardless of nature or type that arise out of, pertain to, or relate to the negligence, recklessness, or willful misconduct of the Consultant, or its employees, agents, or subcontractors. Liabilities subject to the duties to defend and indemnify include, without limitation, all claims, losses, damages, penalties, fines, and judgments; associated investigation and administrative expenses; defense costs, including but not limited to reasonable attorneys' fees; court costs; and costs of alternative dispute resolution. The Consultant's obligation to indemnify applies unless it is finally adjudicated that the liability was caused by the sole active negligence or sole willful misconduct of an indemnified party. If it is finally adjudicated that liability is caused by the comparative active negligence or willful misconduct of an indemnified party, then Consultant's indemnification obligation shall be reduced in proportion to the established comparative liability.
(b) The duty to defend is a separate and distinct obligation from Consultant's duty to indemnify. Consultant shall be obligated to defend, in all legal, equitable, administrative, or special proceedings, with counsel approved by the City, the City and its councilmembers, officers, agents, and employees, immediately upon tender to Consultant of the claim in any form or at any stage of an action or proceeding, whether or not liability is established. An allegation or determination that persons other than Consultant are responsible for the claim does not relieve Consultant from its separate and distinct obligation to defend under this section. The obligation to defend extends through final judgment, including exhaustion of any appeals. The defense obligation includes an obligation to provide independent defense counsel if Consultant asserts that liability is caused in whole or in part by the negligence or willful misconduct of the indemnified party. If it is finally adjudicated that liability was caused by the comparative active negligence or willful misconduct of an indemnified party, Consultant may submit a claim to the City for reimbursement of reasonable attorneys' fees and defense costs in proportion to the established comparative liability of the indemnified party. (c) The review, acceptance or approval of the City's work or work product by any indemnified party shall not affect, relieve or reduce the City's indemnification or defense obligations. This Section survives completion of the services or the termination of this contract. The provisions of this Section are not limited by and do not affect the provisions of this contract relating to insurance.

10. Insurance Requirements.
a. Consultant, at Consultant's own cost and expense, shall procure and maintain, for the duration of the contract, the following insurance policies. i. Workers' Compensation Coverage. Consultant shall maintain Workers' Compensation Insurance and Employer's Liability Insurance for his/her 3 employees in accordance with the laws of the State of California. In addition, Consultant shall require each subcontractor to similarly maintain Workers' Compensation Insurance and Employer's Liability Insurance in accordance with the laws of the State of California for all of the subcontractor's employees. Any notice of cancellation or non-renewal of all Workers' Compensation policies must be received by the City at least thirty (30) days prior to such change. The insurer shall agree to waive all rights of subrogation against City, its officers, agents, employees and volunteers for losses arising from work performed by Consultant for City. This provision shall not apply if Consultant has no employees performing work under this Agreement. If the Consultant has no employees for the purposes of this Agreement, Consultant shall sign the "Certificate of Exemption from Workers' Compensation Insurance" which is attached hereto as Exhibit C.
i. General Liability Coverage. Consultant shall maintain commercial general liability insurance in an amount not less than one million dollars ($1,000,000) per occurrence for bodily injury, personal injury and property damage. If a commercial general liability insurance form or other form with a general aggregate limit is used, either the general aggregate limit shall apply separately to the work to be performed under this Agreement or the general aggregate limit shall be at least twice the required occurrence limit.
ili. Automobile Liability Coverage. Consultant shall maintain automobile liability insurance covering bodily injury and property damage for all activities of the Consultant arising out of or in connection with the work to be performed under this Agreement, including coverage for owned, hired and non-owned vehicles, in an amount of not less than one million dollars ($1,000,000) combined single limit for each occurrence.
iv. Errors and Omissions Liability. Consultant shall maintain errors and omissions liability insurance for all work performed under this Agreement in an amount of not less than one million dollars ($1,000,000).
b. Policy Endorsements. Each general liability and automobile liability insurance policy shall be with insurers possessing a Best's rating of no less than A:VII and shall be endorsed with the following specific language:
i. The City of Calexico, its elected or appointed officers, officials, employees, agents and volunteers are to be covered as additional insureds with respect to liability arising out of work performed by or on behalf of the Consultant, including materials, parts or equipment furnished in connection with such work or operations.
ii. This policy shall be considered primary insurance as respects the City, its elected or appointed officers, officials, employees, agents and volunteers. 4 Any insurance maintained by the City, including any self-insured retention the City may have, shall be considered excess insurance only and shall not contribute with it.
iii. This insurance shall act for each insured and additional insured as though a separate policy had been written for each, except with respect to the limits of liability of the insuring company.
iv. Any failure to comply with reporting provisions of the policies shall not affect coverage provided to the City, its elected or appointed officers, officials, employees, agents or volunteers.

V. The insurance provided by this policy shall not be suspended, voided, canceled, or reduced in coverage or in limits except after thirty (30) days written notice has been received by the City.

Deductibles and Self-Insured Retentions. Any deductibles or self insured retentions must be declared to and approved by the City. At the City's option, Consultant shall demonstrate financial capability for payment of such deductibles or self-insured retentions.
d. Certificates of Insurance and Endorsements. Consultant shall provide certificates of insurance with original endorsements to City as evidence of the insurance coverage required herein. Certificates of such insurance shall be filed with the City on or before commencement of performance of this Agreement. Current certification of insurance shall be kept on file with the City at all times during the term of this Agreement.

11. Compliance with Laws. Consultant shall use the standard of care in its profession to comply with all applicable federal, state and local laws, codes, ordinances and regulations.

12. Licenses. Consultant represents and warrants to City that it has all licenses, permits, qualifications, insurance and approvals of whatsoever nature which are legally required of Consultant to practice its profession. Consultant represents and warrants to City that Consultant shall, at its sole cost and expense, keep in effect or obtain at all times during the term of this Agreement, any licenses, permits, insurance and approvals which are legally required of Consultant to practice its profession. Consultant shall obtain a City of Calexico Business License.

13. Controlling Law Venue. This Agreement and all matters relating to it shall be governed by the laws of the State of California and any action brought relating to this Agreement shall be held exclusively in a state court in the County of Imperial, California. 5 14. Written Notification. Any notice, demand, request, consent, approval or communication that either party desires or is required to give to the other party shall be in writing and either served personally or sent prepaid, first class mail. Any such notice, demand, etc. shall be addressed to the other party at the address set forth herein below. Either party may change its address by notifying the other party of the change of address. Notice shall be deemed communicated within 48 hours from the time of mailing it mailed as provided in this section.

If to City: City of Calexico, City Manager
608 Heber Ave.

Calexico, CA 92231
If to Consultant: LEE & RO, Inc.
1199 South Fullerton Road
City of Industry, CA 91748

15. Consultant's Books and Records.
a. Consultant shall maintain any and all ledgers, books of account, invoices, vouchers, canceled checks, and other records or documents evidencing or relating to charges for services, or expenditures and disbursements charged to City for a minimum period of three (3) years, or for any longer period required by law, from the date of final payment to Consultant to this Agreement.

Consultant shall maintain all documents and records which demonstrate performance under this Agreement for a minimum period of three (3) years, or for any longer period required by law, from the date of termination or completion of this Agreement.
c. Any records or documents required to be maintained pursuant to this Agreement shall be made available for inspection or audit, at any time during regular business hours, upon written request by the City Manager, City Attorney, City Auditor or a designated representative of these officers. Copies of such documents shall be provided to the City for inspection at City Hall when it is practical to do so.

Otherwise, unless an alternative is mutually agreed upon, the records shall be available at Consultant's address indicated for receipt of notices in this Agreement.

Where City has reason to believe that such records or documents may be lost or discarded due to dissolution, disbandment or termination of Consultant's business, City may, by written request by any of the above named officers, require that custody of the records be given to the City and that the records and documents be maintained in City Hall. Access to such records and documents shall be granted to any party authorized by Consultant, Consultant's representatives, or Consultant's successor-in-interest.

Entire Agreement. This Agreement constitutes the complete and exclusive statement of Agreement between the City and Consultant. All prior written and oral communications, including correspondence, drafts, memoranda, and representations, are superseded in total by this Agreement.

17. Amendments. This Agreement may be modified or amended only by a written document executed by both Consultant and City and approved as to form by the City Attorney.

18. Waiver. No failure on the part of either party to exercise any right or remedy hereunder shall operate as a waiver of any other right or remedy that party may have hereunder.

19. Execution. This Agreement may be executed in several counterparts, each of which shall constitute one and the same instrument and shall become binding upon the parties when at least one copy hereof shall have been signed by both parties hereto. In approving this Agreement, it shall not be necessary to produce or account for more than one such counterpart.

20. Assignment and Subcontracting. The parties recognize that a substantial inducement to City for entering into this Agreement is the professional reputation, experience and competence of Consultant. Assignments of any or all rights, duties or obligations of the Consultant under this Agreement will be permitted only with the express consent of the City. Consultant shall not subcontract any portion of the work to be performed under this Agreement without the written authorization of the City. If City consents to such subcontract, Consultant shall be fully responsible to City for all acts or omissions of the subcontractor. Nothing in this Agreement shall create any contractual relationship between City and subcontractor nor shall it create any obligation on the part of the City to pay or to see to the payment of any monies due to any such subcontractor other than as otherwise is required by law.

21. Termination. This Agreement may be terminated by the City immediately for cause or by either party without cause upon fifteen days' written notice of termination. Upon termination, Consultant shall be entitled to compensation for services performed up to the effective date of termination.
***SIGNATURES ON FOLLOWING PAGE***
IN WITNESS WHEREOF, the parties have caused this Agreement to be executed on the date first written above.

CITY OF CALEXICO: CONSULTANT:

Juan Contreras
Acting City Manager
APPROVED AS TO FORM: ATTEST:

Carlos Campos Veronica L. Alvarado
City Attorney City Clerk

EXHIBIT A

SCOPE OF SERVICES
(proposal dated April 18, 2024)
Proposal For
Engineering Design Services
or Chlorine Conversion
Project - Gaseous Chlorine
Feed System to Liquid CALEXICO
Here Calls Cout Whener
typochlorite Feed System City of Calexico
pril 18, 2024
EE + RO DIR Registration Number: 1000015613
Proposal by:

LEE+RO

WATER INFRASTRUCTURE ENGINEERS
1199 South Fullerton Road, City of Industry, CA 91748
626-912-3391 lee-ro.com
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System

CONTENTS

1. Cover Letter .... ...1

2. Key Personnel ...2

TABLE OF CONTENTS

4. Understanding and Approach
Schedule.... .18

6. Experience.... ....20

7. Cost and Fees (Submitted as a Separate Cost Proposal)

APPENDICES
Appendix A - Resumes
Appendix B - DIR Certification
& LEE+RO

WATER IRFRASTRUCTURE ENGINEERS
lee-ro.com
SECTION 1.

COVER LETTER
& LEE-RO

WATER INFRASTROCTURE ENGINEERS
LEE+ RO
We SEES SULTUM ENGINEERS
Celebrating 40 goars
1199 South Fullerton Road
City of Industry. CA 91748
626.912-3391
lpe-ro.con/
April 18, 2024
Attn: Liliana Falomir,
Public Works Manager
Office of the City Clerk
City Hall
City of Calexico
608 Heber Avenue
Calexico, CA 92231
Subject: Proposal for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
Dear Ms. Falomir:

LEE + RO is excited to perform engineering design services for the WTP and EWR Gaseous Chlorine Conversion Project. We bring four decades of local expertise and services in water utility capital improvement projects of design and construction support services for water treatment facilities.

LEE + RO has considerable experience with similar engineering services contracts for the City of El Centro, City of Brawley, Moulton Niguel Water District, the Santa Margarita Water District, South Orange County Water Authority, and the Inland Empire Agency, In Section 5. Experience & References, we have project descriptions for the above clients and encourage you to contact our references.

The proposal is valid for at least a ninety (90) day period from April 18,2024.

We look forward to working with you on this assignment. We will be the contact person to represent the firm on all contract matters. You can reach us both via our contact information listed below. Should you have any questions regarding this proposal, please do not hesitate to contact uS.

Respectfully Submitted,
LEE + RO, Inc. LEE + RO, Inc.

Dhiru Patel, PE
Jay Jung, PE CEO / Principal-in-Charge
Project Manager
1199 S. Fullerton Road 1199 S. Fullerton Road
City of Industry, CA 91748 City of Industry, CA 91748
(626) 667-5342 (626) 667-5309
[email protected] [email protected]

LOS ANGELES BAY AREA SACRAMENTO SALI DIEGO
SECTION 2.

KEY PERSONNEL
& LEE+RO

WATER INFRASTRUCEURE ENGINEERS
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System

2. KEY PERSONNEL
LEE + RO's proposed project team is highly experienced and technically proficient, and have recently delivered multiple successful chlorine disinfection projects. Our proposed Project Exhibit 2-1 Projact Organizational Chari Manager, Jay Jung, PE is a Vice President and Firm Principal and served as the project manager for various water disinfection projects. He has also successfully delivered a recent chlorine conversion project for the City of El Centro. Many of our proposed project team members were also part of the design team on City of El Centro project. LEE + RO recently completed the final CALEXICO construction for the City of El Centro Chlorine Conversion project and the project team will be able to apply the lessons learned during the design and construction of previous projects directly to Wee Calls Cool Tilace livet" this project. The LEE + RO team organization, identifying the roles Pret palunCharge and responsibilities of proposed key personnel in Exhibit 2-1.

Brief biographies for key team members follow. Full resumes are Dhiu Patel, PE included in Appendix A. The current workload for the proposed project team members is such that all are immediately available to commence work on the project. The project team is sufficiently Project Manager staffed so all necessary work tasks can be completed on schedule and in a timely manner. Technical Aduisor &
- Jay Jung. PE DA/OC Reviewi
John T Young, PE

PROJECT TEAM
Piocess / Mechanical Eleclucat Instrumentation
Engineer & Contrals Engineer Stricturit Engicer Ste Civil / Utility Research D
Sam Lee. PE Michael Assadourian PE James Gingrich, SE PE Ramesh Bachuvala, EIT LEE+RO

WATER INFRASTRUCTURE ENGINEERS
Pace 2 lee-ro.com
City of Culexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System

KEY PERSONNEL BIOGRAPHIES
Jay Jung, PE | Project Manager
Jay Jung has 20 years of water and wastewater treatment process analysis and research, facility engineering, design, construction, and start-up & commissioning experience. His areas of expertise include pilot or full-scale testing, sampling and data analysis, and configuration of treatment process trains. He has much experience with feasibility studies, condition assessment, hydraulic analysis, and preparation of preliminary design reports. Jay develops facility design criteria, process flow diagrams and P&IDs, plant hydraulic profiles, and final design drawings. As a project manager, Jay coordinates the design, including construction specification development and cost estimating, communicates with clients, and coordinates design activities with the civil, structural, mechanical, electrical, and I&C design disciplines. During the construction phase, Jay manages shop drawing & equipment submittal reviews, RFls and change order processing, and startup & commissioning activities. His area of water and wastewater systems engineering expertise includes chemical handling facilities, flocculation and coagulation process, sedimentation and filtration, nutrient removal, chloramine disinfection, granular activated carbon adsorption, and membrane filtration.

LICENSE CERTIFICATION
Civil Engineer. CA. #C75672 Jay's Relevant Experience includes:
• Chlorine Conversion Project at Water Treatment Plant, City of El Centro Project Manager for conversion of gaseous chlorine disinfection system to 12.5% sodium

EDUCATION
hypochlorite disinfection system at Water Treatment Plant.

PHD, Candidate, University
of Southern California • Disinfection Conversion from Chlorine Gas to Sodium Hypochlorite at Water Treatment Plant, (Completed 4 Years In Ph.D. City of Brawley
Program) Project Manager to prepare preliminary design report for conversion of existing gaseous chlorine system to sodium hypochlorite system for chloramine disinfection at Brawley Water MS. Environmental Treatment Plant.

Engineering, University Of
Southern California 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District Project Manager for conversion of onsite hypochlorite generation systems to bulk liquid sodium MS, Environmental hypochlorite and ammonia for chloramine disinfection at five water reservoir sites.

Engineering, Yonsel
University, Korea • 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District Project Manager for conversion of onsite hypochlorite generation systems to bulk liquid sodium hypochlorite and ammonia for chloramine disinfection at three water reservoir sites. • Reservoir Management Systems Replacement Project, Santa Margarita Water District Project Manager for conversion of onsite hypochlorite generation systems to bulk liquid sodium hypochlorite and ammonium sulfate for chloramine disinfection at two water reservoir sites.

Chemical Storage and Feeding Facilities, Diemer Water Treatment Plant Oxidation Retrofit Program, (ORP) Project, Metropolitan Water District of Southern California Project Manager for design of a $8.5 million chemical tank farm and feeding systems supporting the $130 million ORP facilities at the Diemer Water Treatment Plant in Yorba Linda.

Chemical System Upgrades, Mills Water Treatment Plant, Metropolitan Water District of Southern California
Process Engineer for the design of $17 million in chemical storage and feeding system upgrades at the Mills Water Treatment Plant. Chemical systems include suifuric acid, caustic soda, alum/ferric, sodium hypochlorite, ammonia, and fluorosilicic acid.
& LEE+RO
- WATER INFRASTRICTURE ENGINEERS

City of Calexico
Chlorine Conversior Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Sam Lee, PE | Process / Mechanical Engineer
Sam Lee has 17 years of diversified civil, sanitary, mechanical and process engineering and design experience with water and wastewater infrastructure projects. His experience includes facility investigation and evaluation, condition assessments, documentation of as-built conditions through field verification of existing dimensions, piping and equipment layouts, engineering analysis and design, and construction phase engineering services for wastewater and water treatment plants, force mains and other wastewater and water conveyance and collection systems including booster pump stations and lift stations, emergency generators and other auxiliary equipment. Through a wide variety of water infrastructure engineering projects, Sam has acquired diverse design and inter-discipline coordination skills.

Sam's Experience:

Civil Engineer. • El Centro WTP Chlorine Conversion Project CA #C78939
• Reservoir Management Systems Replacement, Santa Margarita Water District • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District MS. Environmental
• 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District Engineering, University
of Southern Calitornia
BS. Environmental
Engineering. Yonsel
University, Korea
Michael Assadourian, PE | Electrical Engineer
Michael Assadourian has over 30 years of experience covering electrical and control systems engineering, design, construction, and project management for water and wastewatertreatment plants, pump stations, emergency power generation systems, water conveyance facilities, petrochemical plants, and refineries. He has in-depth knowledge of power distribution and lighting systems, both NEMA and IEC standards-based; motor controls and variable frequency drives; coordination with power & utility companies; and SCADA and radio/microwave systems. His work experience includes P&ID development, electrical system condition assessment, ETAP analysis, load flow and short-circuit analysis, and protective device coordination studies. He has extensive experience in retrofitting existing facilities with new power and controls and resolving construction-related problems. Michael has provided a wide variety of construction support services, including equipment & shop drawings review, TRaTION processing of RFls, resolving construction issues, and electrical system commissioning and start-up Electrical Engineer.

California #E14390
Michael's Relevant Experience Includes:

MS. Industrial and • El Centro WTP Chlorine Conversion Project Systems Engineering &
Management. University of • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District Southern California
• 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District BS. Electrical Engineering,
University of Southern • Treatment Plant and Electrical System Improvements (FY2013 Southside Plant Improvements), J.

California:

B. Latham Wastewater Treatment Plant, South Orange County Wastewater Authority LEE+RO

WATER INFRASTRUCTURE ENGINEERS
Pege 4 lee-ro.com
City of Calexico
Chlorine Conversion Praject - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System James Gingrich, SE, PE 1 Electrical Design
James Gingrich Is a California registered structural engineer with more than 30 years of structural analysis, engineering, design, constructability analysis, value engineering, project coordination, and construction management experience. He has been the structural project manager, QA/QC reviewer, and lead structural engineer for planning, investigation and condition assessment, preparation of preliminary & final design, seismic analysis and upgrading, and construction phase engineering services for a wide variety of concrete and steel structures for water conveyance and pumping facilities, water storage, treatment and distribution facility projects for Metropolitan Water District (MWD) of Southern California. His experience and expertise include rehabilitation & retrofit engineering & designs for existing facilities. His representative experience includes lead designer for the Lake Matthew Outlet Facilities, Colorado River Aqueduct Pumping Plant Seismic Upgrades, and Oxidation Retrofit (Ozone Civil Engineer, CA #C34701 Disinfection) Projects for MWD's Mills, Jensen, Weymouth, Skinner, and Diemer Water Treatment Plants.

Structural Engineer.

CA #53023 James's Experience:
• 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District B5 Civil Engineering. • 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District California State
Polytechnic University. • Oxidation Retrofit Projects (ORPs) at Five Water Treatment Plants, Metropolitan Water District of Pomona
Southern California
Graduate courses in
Structural Dynamics & • Filter Building and Filter Complex Seismic Upgrades, Weymouth Water Treatment Plant, Advanced Structural Metropolitan Water District of Southern California Analysis, Cal State Los
Angeles
Ramesh Bachuvala, EIT I Site Civil./ Utility Research
Ramesh Bachuvala has over 18 years of experience in planning, design, and construction of municipal water and wastewater infrastructure, including water mains, booster pump stations, flow control facilities, storm drains, sewers, force mains, lift stations, and related grading and other site preparation work. He has served as a project engineer and senior civil designer and oversees the work of CAD designers in the preparation of construction plans. Ramesh has extensive experience in preparing design plans for pipeline construction and street improvements within the public right-of-way. Areas of his expertise include utility search and coordination with utility companies; hydraulic and hydrology analysis; pipeline plan and profiles, WQMP/SWPPP reports; traffic control design; and ROW and easement analysis and coordination.

Ramesh's Relevant Experience Includes:

ICENSE GERT FIGATION
EIT. #143514 • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District EDU • 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District MS. Geographical
Information Systems. • District 2 Water Main Replacement Project, City of Pomona, CA FH-University of Karlsrube-
Germany • Stagecoach Park Reclaimed Water Line, City of Corona BS, Civil Engineering,
Osmania University, India
LEE+RO

WATER INFRASTRUCTURE ENGIHEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochiorite Feed System John T. Young, PE | Technical Advisor & QA/QC Review
John Young has 40 years of mechanical design experience. In the Last twenty-five years John worked with Metropolitan Water District of Southern California (MWD). Project Design Manager for various CIP projects including Water Treatment Plant Oxidation Retrofit Projects, Solids Handling and Water Reclamation, and Improvements projects, domestic water system improvements projects, and large size valves (slide gates, roller gates, fixed cone valves) replacement projects.

John's Experience:
• Mills and Jensen Finished Water Reservoir Cover and Liner Replacement Project, Metropolitan Water District of Southern California

KEE CER DRICAGON
Mechanical Engineer, • Weymouth Domestic Water System Improvements, Metropolitan Water District of Southern CA #M026419 California
• MWD Copper Basin and Gene Wash Dam Discharge Valve
BS. Mechanical
Engineering, University of • MWD CRA Radial Gate Replacement Projects California, Los Angeles
Dhiru Patel, PE | Principal-In-Charge
Dhiru Patel has over 32 years of water and wastewater facilities engineering, project management and business management experience. He has managed and overseen projects involving study, PDR, final design and construction support phases for distribution, conveyance, treatment and supporting facilities for water/wastewater/water reclamation projects. He has considerable experience in managing Metropolitan projects, and is familiar with the Metropolitan facilities, design standards and project/design management practices. He has extensive experience with project management, plant and process engineering studies, preliminary engineering, final design, construction engineering support, troubleshooting, and operations and maintenance (0&M) support for water and wastewater treatment facilities. He has extensive knowledge of current environmental and safety regulations pertaining to water treatment facilities.

Chemical Engineer,
CA #CH4264 Dhiru's Experience:
• 2016-17 and 2017-18 Reservoir Management Systems Replacement Projects (Phase 1 & Phase 2), MS, Chemical Engineering, Moulton Niguel Water District University of
Southern California • On-Call Professional Engineering Services for Capital Improvement Program Implementation, Moulton Niguel Water District
• Various Projects, West Basin Municipal Water District • Water Filtration Plant Improvements and Rehabilitation, Metropolitan Water District of Southern California
LEE+RO

WATER IRFRASTRUCTURE ENGINEERS

SECTION 3.

UNDERSTANDING

AND APPROACH
LEE+RO

WATER INFRASTRUCTHRE ENGINEERS
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System

3. PROJECT UNDERSTANDING AND APPROACH
PROJECT UNDERSTANDING capacity of 14 MGD, as well as to provide redundancy, LEE + RO recommends two (2) double wall type, 4,000-gal capacity The City of Calexico (City) owns and operates a Water Treatment storage tanks for a total storage volume of 8,000 gals.

Plant (WTP) and the Eastside Water Reservoir (EWR). The WTP receives its water supply from the Colorado River through the Eastside Water Reservoir Imperial Irrigation District's (ID) canals. The City's WTP has a For the EWR, LEE + RO's approach for the storage of the bulk design capacity of 14 million gallons per day (MGD), with an sodium hypochlorite will also be based on a minimum of 14 days average daily demand of 9 MGD and current peak flows of 7-8 of on-site storage. At the EWR site, the sodium hypochlorite will MGD. The EWR has a design capacity of 6 MGD, with an average be injected at three application points - the reservoir inlet, the daily demand of 1.25 MGD. The WTP and EWR both currently reservoir outlet, and the recirculation pipe. Based on discussions operate a gaseous chlorine water disinfection system to disinfect with City personnel, the target chlorine residual level is 0.4 the water prior to discharging it into the City's supply lines. The mg/L, as the purpose for adding chlorine at the EWR is to boost City has expressed concern regarding the usage of chlorine gas chlorine residual levels prior to distribution. At the design flow of as a disinfectant, as chlorine gas is toxic and poses dangers 6 MGD, two (2) double wall type, 250-gal capacity storage tanks to the public and operations staff. Since the WTP is located are sufficient to meet the target chlorine residual level. adjacent to residential areas, the risk of chlorine gas exposure to the public is greatly increased in the unlikely event of a The most common tank materials used for sodium hypochlorite large leak. LEE + RO's understanding is that the City desires to storage are fiberglass reinforced plastic (FRP), high density convert from a gaseous chlorine system to a 12.5% bulk sodium linear polyethylene (HDLPE), or high-density cross-linked hypochlorite disinfection system. polyethylene (HDXLPE). We recommend a HDLPE tank because (1) it is more economical than a FRP tank, and (2) no cracking issues from UV radiation due to an indoor installation. These Technical Approach will be further evaluated and presented in the Feasibility Study/ Preliminary Design Report.

In this section we discuss our approach to implementing the desired improvements. A summary matrix of the preliminary Chemical Pumps design criteria that is described in more detail in this approach is LEE + RO recommends peristaltic pumps for hypochlorite included as Exhibit 3-1 on the following page. injection to a pre-clarifier, a pre-filter, and a clearwell at the WTP, and for injection to the reservoir inlet, outlet, and recirculation

12.5% Sodium Hypochlorite Storage Tanks pipe at the EWR. Peristaltic pumps are compact in size, have low capital costs, have a high turndown ratio, and are relatively Water Treatment Plant easy to maintain. There are fewer components (e.g. tubing) LEE + RO's approach for storage of the bulk sodium hypochlorite in contact with the chemical. They come with leak detection at the WTP will be based on a minimum of 14 days of on-site for tubing failures, and they do not experience pump priming storage. Based on discussions with City WTP Operations issues. Their disadvantages include a limited discharge pressure staff, the WTP's summertime maximum chlorine consumption (less than 125 psi or 290 feet of head), the feed rate slowly is currently 260 pounds per day (Ibs/day). Each pound of diminishes over time due to degradation of the tubing, and chlorine gas is equivalent to one gallon (gal) of 12.5% sodium the tubing must be replaced at regular intervals to prevent hypochlorite solution, so the equivalent 12.5% sodium failure. The recommended peristaltic pump is equipped with a hypochlorite solution would be 260 gals/day. As such, at a peak tube replacement alarm function, which will alarm and notify flow of approximately 7-8 MGD, the WTP would consume 260 O&M staff to replace the tube before it fails. Additionally, gals/day of sodium hypochlorite, so one (1) 4,000-gal capacity our preliminary evaluation indicates that total dynamic head storage tank will provide sufficient storage (260 gals/day x 14 losses at injection points are not significantly high, and the days is 3,640 gals). However, to accommodate the full design recommended peristaltic pumps can be used.

LEE+RO

WATER INFRASTRUCTURE ENGINEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Piping and valves
Chemically compatible materials, such as polyethylene (PE) tubing or PVC, should be used in sodium hypochlorite applications.

Inside the chemical building, the chemical piping will be rigid PVC between the pump and storage tank, whereas flexible PE tubing will be used between the pump discharge and the injection points at WTP and EWR. Piping located outside of the chemical building containment area should be double-walled. Exposed plastic piping located outside of the building, including double-walled containment piping shall be CPVC, which exhibits better UV resistance than PVC. All buried plastic piping will be PVC. For the hypochlorite system, we recommend using PVC vented ball valves to vent any off-gasses and prevent the valve from exploding.

Exhibit 3-1: Preliminary Design Criteria
Water Treatment Plant Eastside Water Reservoir
Notes
(WTP) (EWR)

DESIGN BASIS
Design Capacity, MGD 14 6
Sodlum Hypochlorite Injection Pre-clarifier, Pre-filter, and Reservoir Inlet, Outlet and At WTP, Process Train B and C Locations Clearwell Recirculation Pipes
Target Chlorine Residual, mg/L 0.6 0.4

12.5° SODIUM HYPOCHLORITE TANKS
No. of Storage Tanks 2 2
Tank Volume in Gallons (Dia. x HDLPE Tank, Min. 2 Weeks Storage 4,000 (102" × 178") 250 (34" x 83")
Height)
Type of Tank Concrete Secondary Containment Not
Double Wall Double Wall
Req'd

CHEMICAL PUMPS
No. of Metering Pumps 4
Type of Pump Peristaltic Pump Peristaltic Pump
Pump Feed Flow Range 0 to 20 GPH 0 to 10 GPH
OTHER DESIGN CONSIDERATIONS 1. Ultrasonic Level Sensors on Hypochlorite Storage Tanks

2. Reverse Sight Level Gauge on Hypochlorite Storage Tanks

3. Double Containment Pipe Chemical Leak Detector

4. Chemical Spill Container at Truck Fil Connection

5. Safety Shower in Chemical Bullding

6. Back Flow Preventer for Satety Shower
Construction Sequencing and Chemical Building Modifications Water Treatment Plant
LEE + RO proposes to install two (2) 4,000-gallon storage tanks in the existing chlorine storage room and four (4) chemical metering pumps in the existing chlorine feed room. Currently, the chlorine storage room contains ten (10) one-ton chlorine cylinders, scales hoists, chlorine leak detector and piping. The chlorine feed room contains four (4) wall mounted chlorine feed systems. For a bulk sodium hypochlorite storage and feed system, the existing chlorine gaseous storage and feed system, including a gas scrubber system, will be demolished once the new hypochlorite system is commissioned. The proposed demolition plan for the WTP Chlorine Building is shown in Exhibit 3-2.

LEE+RO

lee-ro.com
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System The City desires the WTP to remain operational during the storage and feed system shall be demolished. The proposed construction and continue to inject chlorine into the plant. demolition plan for the EWR is shown in Exhibit 3-4.

Therefore, the gaseous system will remain in service during the conversion to a bulk hypochlorite system. LEE + RO recommends LEE + RO recommends the following construction sequence:
the following construction sequence.

1. Install the hypochlorite feed pumps in the existing pump

1. Install the hypochlorite feed pumps in the existing room. chlorine feed room. 2. Install a temporary hypochlorite storage tank in the

2. Install a temporary hypochlorite storage tank in the existing pump room. existing chlorine feed room or outside the building. 3. Test the liquid hypochlorite feed system and inject

3. Test the liquid hypochlorite feed system and inject hypochlorite into the EWR piping. hypochlorite into the plant. 4. After successful startup and operation of the

4. After successful startup and operation of the hypochlorite system, demolish the existing gaseous hypochlorite system, demolish the existing gaseous chlorine storage and feed system, including the water chlorine storage and feed system. booster pump system.

5. Modify the existing chlorine storage room for 5. Construct new concrete foundation for two double wall installation of the new hypochlorite storage tanks and type storage tanks in the pump rom. construct a new concrete foundation for two (2) double 6. Install two new hypochlorite tanks. wall type 4,000-gallon hypochlorite storage tanks. Reconnect piping from hypochlorite storage tanks to

6. Install two (2) storage tanks in the existing chlorine feed pumps. storage room. 8. Remove temporary hypochlorite tank and piping.

7. Reconnect the piping to the chemical feed pumps. The proposed hypochlorite tanks are approximately 4 feet in Remove the temporary hypochlorite storage tank and diameter. Since the existing pump room has a door/wall opening piping. on the north side of the building, there is sufficient opening The proposed 4,000-gallon hypochlorite tank is 8.5 feet in width accommodate installation of the two tanks. diameter, and the existing door in the chlorine storage room is 10 feet wide. This provides sufficient clearance to accommodate The new 250-gal storage tanks will be installed on an the installation of the new storage tanks, so no modifications to approximately 9-foot by 5-foot concrete foundation. Since the the existing door and opening are anticipated. new storage tanks are significantly smaller than those required at the WTP, the existing concrete slab is likely sufficient to The thickness of the existing concrete floor in the chlorine prevent overturning of the tanks in a seismic event. Further storage room is 6 inches. The total weight of 4,000-gallon structural analysis will be provided and presented in the hypochlorite solution and a HDLE tank is more than 36,000 Feasibility Study/Preliminary Design Report. The proposed pounds. To prevent the tanks from overturning during a sodium hypochlorite storage and feed system layout at the EWR seismic event, a thicker concrete foundation is required. LEE is presented in Exhibit 3-5. + RO recommends saw-cutting the existing concrete slab and constructing a new 18-inch thick concrete foundation for the Regulatory Support and Fire Authority Permit hypochlorite storage tanks. Structural calculations in accordance with the latest seismic design criteria will be provided and LEE + RO does not anticipate that CEQA, a NPDES Construction presented in the Feasibility Study/Preliminary Design Report. General Permit, nor an Imperial County Air Pollution Control The proposed sodium hypochlorite storage and feed system District permit will be required for the project. However, the layout at the WTP is presented in Exhibit 3-3. local Fire Authority will require a plan check for the chemical storage tanks. LEE + RO will coordinate with the local Fire Eastside Water Reservoir Authority to prepare the application and the plan check packages for submittal to local Fire Authority at the 100% design LEE + RO proposes to install the two (2) 250-gallon storage tanks phase. The local Fire Authority inspector will issue the permit and the four (4) chemical metering pumps near the walls inside after confirming the chemical storage facility is constructed in of the existing pump room. The chlorine room currently has no accordance with the approved plans. space to install the pumps and tanks during construction. Since the existing chlorine gas system must remain operational during LEE + RO will also provide updates to the City's Operation construction, the equipment cannot be removed until the new Manual per Task 10 in the RFP by coordinating with the City and liquid hypochlorite system is commissioned. Once the new liquid the Department of Drinking Water at the State Water Resources hypochlorite system is completed, the existing chlorine gaseous Control Board as necessary.

LEE+RO

WATER INFRASTRUCTURE ENGINEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Electrical, Instrumentation and Control Eastside Water Reservoir The existing chlorine system's "CI2 Booster Control Panel" and Water Treatment Plant "CI2 Scrubber Control Panel" are currently fed from Switchboard The existing chlorine system is currently fed from "Panel LA", "", which is a 1200A, 480V, three-phase distribution board which is a 100A 208/120V three-phase service. "Panel LA" is located in the electrical room of the existing building. An powered from the existing "Panel HA", which is fed from the existing "Panel A" is fed from Switchboard "S" via a 37.5 kVA WTP's 1200A 480V three-phase distribution board, "MCC-G", 480-120/240V step down transformer. The new hypochlorite via a 30 kVA transformer. However, to keep the chlorine system feed pumps and equipment will be fed from "Panel A1", which operational during the construction and accommodate the is fed from "Panel A". LEE + RO anticipates "Panel A1" can new loads for hypochlorite storage and feed system, LEE + RO accommodate the loads from the new hypochlorite system. LEE recommends providing a new 100A 208/120V single-phase + RO will conduct a detailed assessment of power requirements panel fed directly from "MCC-G" via a new transformer. LEE + and power availability at the EWR and provide the results in the RO will conduct a detailed assessment of power requirements Feasibility Study/Preliminary Design Report. and power availability at the plant with results provided in the Feasibility Study/Preliminary Design Report. The existing chlorine residual analyzers are located at the reservoir inlet and outlet, as well as from a sample line from The existing chlorine residual analyzers are located at the filter the recirculation piping. For hypochlorite injection, the new inlet and outlet (i.e. clearwell) and control the chlorine dosage. chemical metering pumps will receive the residual chlorine For hypochlorite injection, the new chemical metering pumps concentration from the analyzers and automatically control the will receive the residual chlorine concentration from the analyzer hypochlorite dosage to inject hypochlorite and maintain the and automatically control the hypochlorite dosage to inject target residual concentration. LEE + RO will work with the City to hypochlorite and maintain the target residual concentration. LEE develop the control philosophies and incorporate the necessary + RO will work with the City to develop the control philosophies programming requirements into the specifications for inclusion and incorporate the necessary programming requirements into in the Contractor's scope of work. the specifications for inclusion in the Contractor's scope of work.

LEE+

WATER INERSSIRUCTURE ENGINEERS

City of Calexico
Chiotine Conversion Projed - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Exhibit 3-2: Water Flitration Plant Chlorine Building Demolition Plan LEGEND:

VIIII To Be Demolished

CHLORINE STORAGE ROOM
~(E) CHLORINE TON
UNDERER (TIP CF 10,
(E) HOST - (5) HOST BEAU

CHLORINE FEED ROOM
(F) BATER BOOSTER
PUMP (TYP OF 2)

ELECTRICAL ROOM
PLAN
SCALE: 18*= 1-0°
I LEE+RO
City of Cafexice
Chlorine Conversion Projelt - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Exhibit 3-3: Water Filtration Plant Chlorine Building Plan

ICHLOE TAK

CLIKSONG LET SUCK
14000 CaL DOUBLE

CHLORINE STORAGE ROOM
SIGHT LEVEL CAUCE •

CHLORINE FEED ROOM

ELECTRICAL ROOMS

PROPOSED COMSTRUCTIONL SEQUENCE
L. INSTALL APOCHESTE FEED PUMPS, NSTALL HIPOCHLORITE FEED PUMPS I PLAN 2. ASTIL TEMPORARY IPOCHLORITE STORAGE TRIK I CHLORIDE FED ROGUN OR OUTSIDE BUT DING.

SCALE: 1/8° = 1-0°
5 ACE SION TE LOURE TO EAST FAE CLOTE STORE TIS CONSTRUCT NEW CONCRETE. COSTRUCT NEW CONCRETE.

5. MISTALL TWO HYPOCHLORITE TANKS.

7. RECONNECT PIPING FROM HYPOCHLORITE STORAGETANKS TO FEEO PUMPS B, REMOVE A TEMORARY HYPOCHLORITE TANK, AND PIPING.

LEE+RO

WITER INTRASTRUCTUZE ENGINESES
isoro.com

Chorine Comerio Pried - Gaseous Chine Fed System To lula Hypocharte fred ayedico Exhibit 3-4: Eastside Reservoir Pump Station Demolition Ptan VIIIIA to Be Demolished - 6) CONTROL PANELS

ELECTRICAL ROOM DEFICE

GENERATOR ROOM

DAZES AND
CU-2
CU-1
PLAN
SCALE: V/8"=Ț-0"
LEE+RO

MATER ISFRASTBUCTURE ENGINEERS
lec-ro.com
City of Caferdice
Chiatine Conversioh Project-Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Exhibit 3-5: Eastside Reservoir Pump Station Sodium Hypochlorite Feed System Pien - TO RESERVOIR INtE → TO RESERVOIR OUTLET → TO PESERVOR PECRCLATIO U-NEVE /PIC SCREEN (MP).

LOANIGAS
200 LIVE CAUSE
(E) PUNO S
(E) GENERATOR

PROPOSED CONSTRUCTION SEQUENCE

1. MISTALL, HYPOCHLORITE PEED PUMPS.

ASTERON. 2. INSTALLA TEMPORARY HYPOCHLORITE STORAGE TANK IN FUMP ROOM

3. TEST LIQUID HYPOCHLORITE SYSTEM AVID INJECT HYPOCHLORITE TO EASTSIDE WATER RESERVOIR

BICLUDING WATER LOSER FUN SET OH ONE PEO SYSTEM, DEMOLISH EASING GASEOUS CHEORNE FEED AND STORAGE SISTEM

7. RECONNECT PENG FROM HYPOCHLORTE STORAGE TAIRS TO FECO PUMPS. &. REMOVE A TEMORARY HYPOCHLORITE TANK AND PIFING.

PLAN
SCALE: 3/16"=1-0" © LEE+RO

RATES INFRASTRBCTURE ENGINEERS
lac-1o.com

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Scope of Services
LEE + RO acknowledges the scope of services specified in the RFP and confirms that the LEE + RO team will provide the specified services in accordance with RFP scope of service tasks. The scope of service tasks as provided in the RFP have been used to develop a preliminary project schedule in Section 4, and our fee estimate, which is included as Exhibit 1, in a separate envelope.

Project Deliverables
LEE + RO will prepare and submit a complete set of Contract Documents (Construction Drawings, Specifications and Engineer's Estimate of Probable Construction Costs). We have estimated that a total of 40 drawings will be required for this project. A preliminary project drawing list is included on the following page as Exhibit 3-6. LEE + RO will produce feasibility study/preliminary design report and final design documents for the chlorine conversion project and will make the following design submittals. We have also allowed for design workshops following the draft preliminary design report, following the 50% design submittal, 90% design submittal and the 100% design submittal. Project deliverables will be in the format and quantities specified in the RFP and shall include the following:
> Agenda and meeting minutes for five (5) meetings
Draft feasibility study/preliminary design report
Final feasibility study/preliminary design report
50% design submittal (Plans and Technical specifications) 90% design submittal (Plans and Technical specifications) 100% design submittal (Plans and Technical specifications) AAAAAAAAAAA Final contract documents
Estimates of probable construction costs at each submittal phase Permit applications and plan check packages for local Fire Authority Addenda for design related issues; pre-bid meeting agenda and minutes Preconstruction meeting agenda and minutes
RFI responses and submittal review comments
As-built. record drawings
LEE+RO

WATER INFRASTRUCTURE EHGINEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Exhibit 3-6: Preliminary Drawing List
Sheet DWG
Drawing Title / Description
No. No.

G-1 Title Sheet, Vicinity Map and Location Map
2 G-2 General Notes and Drawing Index
6-3 Abbreviations, Symbols and Cross Referencing
D-1 WTP Chlorine Storage Room and Feed Room Demolition Plan and Photos 5 D-2 WTP Chlorine Scrubber Demolition Plan and Photos
6 D-3 EWR Chlorine Storage and Feed Room Demolition Plan and Photos D-4 EWR Water Booster Pump Demolition Plan and Photos
D-6 WTP and EWR Miscellaneous Demolition Details (Piping and Injection Guills) 9 C-1 WTP Overall Site Plan and Yard Piping Plan

10. C-2 WTP Clarifier B and C Infet and Effluent Hypochlorite Injection Detail 11 C-3 WTP Clearwell Hypochlorite Injection Detalls
12 C-4 EWR Overall Site Plan and Yard Piping Plan
13 C-5 EWR Hypochlorite Injection Details at Infet, Outlet and Recirculation Piping 145 C-6 Piping Trench and Standard Civil Detalls
15 S-1 Structural General Notes, Design Standards, and Abbreviations 16 S-2 Structural Standard Details - Slab on Grade, Reinforcing at Corner and Intersection 17 S-3 WTP Structural Demolition Plan - Existing Floor Saw Cut Plan & Details 18 S-4 WTP Sodium Hypochorite Storage Tank Foundation Plan and Sections 19 S-5 WTP Sodlum Hypochlorite Feed Pump Pedestal Plan and Sections 20 S-6 EWR Sodium Hypochlorite Storage Tank and Hypochlorite Feed Pump Foundation Plans and Sections 21 M-1 WTP Sodlum Hypochlorite Storage Room Plans
22 M-2 WTP Sodium Hypochlorite Storage Room Sections and Details 23 M-3 WTP Sodium Hypochlorite Feed Room Plans
24 M-4 WTP Sodium Hypochlorite Feed Room Sections and Details 25 M-5 EWR Sodium Hypochlorite Storage Tank and Chemical Feed Pump Plans 26 M-6 EWR Sodium Hypochlorite Storage Tank and Chemical Feed Pump Sections 27 M-7 Pipe Support and Mechanical Details
28 E1 Electrical General Notes, Symbols and Abbreviations 29 E-2 Electrical Overall Site Plan
30 E-3 Single Line Diagram and MCC Elevation (WTP and EWR) 31 E-4 WTP Electrical Room Pian
32 E-5 WTP Sodium Hypochlorite Storage and Feed Rooms Electrical Pian 33 E-6 EWR Electrical Room Plan
34 E-7 EWR Sodium Hypochlorite Storage and Feed Rooms Electrical Plan 35 E-8 Control Schematics
36 E-9 Panel and Conduit Schedules
37 E-10 Electrical Detalls 1 - Control Panel Support, Conduit Entry, Conduit Stub-up 38 E-11 Electrical Details 2 - PLC Cabinet, Panel Wall Mount, Level Indication Panel 39 1-1 P&ID - Instrumentation Legend, Symbols, and Abbreviations :10 1-2 P&ID - WTP Sodium Hypochlorite Storage Tanks and Chemical Feed Systems 1 of 2 41 1-3 P&ID - WTP Sodium Hypochlorite Storage Tanks and Chemical Feed Systems 2 of 2 42 1-4 P&ID EWR Sodium Hypochlorite Storage Tank and Chemical Feed Systems 1 of 2 1-5 P&ID EWR Sodium Hypochlorite Storage Tank and Chemical Feed Systems 2 of 2

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System

ASSUMPTIONS & CLARIFICATIONS
LEE + RO's technical proposal and the associated fee proposal are based on the following assumptions and clarifications. We welcome the opportunity to discuss our proposal with the City and should we have misinterpreted the RP's scope of services, LEE + RO is willing to make adjustments to our scope and fee proposal, accordingly.

1. We have assumed that any permits, including CEQA, NDES Construction General Permit, Department of Toxic Substance Control, Imperial County Air Pollution Control District, City of Calexico Development Services Department, and Fire Department, are not required for the project. The fee in Exhibit 1 includes the coordination effort if permits are required for the project. The preparation of plan check sets and permit fees will be requested to the City separately.

2. For the fee proposal, we have assumed 15 contractor RFls at a review time of 3 hours per RFI and additional hours for CADD and clerical time.

3. For the fee proposal, we have assumed 25 Contractor shop drawings submittals at a review/approval time of 3 hours per submittal and 10 Contractor shop drawings re-submittals at a review/approval time of 2 hours per re-submittal (and additional clerical time).

4. Frerant prional vous or SUD and derico contractor Change Orders, with a review time of 5 hours per Change HEE+RO

WATER IHFRASTRUCTURE ENGINEERS

SECTION 4.

SCHEDULE
LEE+RO

WATER INFRASTRUCTURE ENGINEERS
City of Calexico
Hite Feed Systen

4. SCHEDULE
Based on LEE + RO'S current and planned workload, we can assure the City that we have the staff availability and are able to complete the work in accordance with the proposed project schedule included here as Exhibit 4-1. We are able to begin work immediately upon award of contract and we fully understand that completion of the project on schedule is critical to the City's view regarding the success of this project. This schedule incorporates the schedule dates and milestones presented in the RFP. We fully expect to submit final contact documents before January 31, 2025.

Task Name Duration Start Finish 101102 Oc/ Nov / 00c/91, 2026 2200 Mar pr 26 May Mar _Apr.

City of Calexica Chlorine Convertion Project • Gaseous Chlorine 445 days Wed 5/15/24 Pe12/27/25 Faed System to Liquid Hypochlorite Feed System
City Counts Approval of Contract 2 day wed 5/25/24 Wed 5/15/24 Notice to Proceed (NT?) 2 day ND 214947 Mon 5/20/20
Phase I: Feasibitty Study/Preliminary Desice Report (POR) 60 days агранам Fr$E/10/24 Phase 1: Feasibilty Study/Preliminary Design Report (PDR) Profiminary Design Kick-Off Meeting 1 dry Wed S/22/24 Wed 5/22/24 Site Veit and Investigation 1 day Thu 5/23/24 Thu 5/23/24 Draft Feasibility Study/PDR 33 cays Fit 5/24/24 Pr 7/32/24 Submit Draft Feasibility Study/POR o drys 51 7/12/24 fri7/12/24 7/12 & Submit Draft Feasibility Study/POR
Draft Feasibility Study/PDR Review try Cty [2 Weeks) 10 days Mon 7/25/24 PM 7/26/24 Draft FeasTilly Study/POR Revicw Workshop Мол 2/29/24 Всп 7/29/21 Pre-Final Feesiblity Study/PDR Assembly 14days Tue 7/30/24 5r18/16/24 Submalt Final Feastity Study/PDR o days Fri 8/15/26 Frl 8/16/24 3/26 er Submit Final Feasibility Study/PDR
Phase ll: Frol Desien 125 day: Mon 8/19/24 5r 2/7/25 Phase li: Final Design 505% Design Phase 30 days Mon 8/19/24 Prl 9/27/24
Submit 50% Design O days FRi 9/27/24 Fri 9/27/24
9/27 & Submit 50% Desian
50% Design Reviewby Ciry (2 Weeks) 10 days Mon 9/30/24 Frİ 10/11/24 17 50% Design Review Workshop 2 day Mon 20/14/24 Man 10/14/24 90% Desten Phase 22 days Tue 10/15/24 Sr: 11/22/24
Submit 90% Deser a days Ir 11/22/24 Fr 11/22/24
21/22 of Submit 90% Design
90% Desigo Review by Cly (2 Weeks) 9 day= Mon 11/25/24 fri 12/6/24 20% Desion Resiew Warkshop 1 day Mon 12/9/24 Mon 12/9/24 Coordeute with Regulatory Agencles, Environmertal and 20 dsys Tue 12/10/24 Frl 2/20/25 Permiting
cracal Sain Manual Progres
Prich Co of Clin project seous Chlorine Feed System to liquid ............... Summary Hypochlorite Feed System
© LEE-RO
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Fago 18
City of Calexico
Chiarine Conversion Projec System to Liquid Hypochionte Feed System Task Nome Duration Start Finish Qtr 2, 2024 Qtr 3, 2024 Qi 4, 2024 Mar May Jun.
260% Design Phase 20 days Tue 12/10/24 Fri 3/10/25
Submit 100kDeiken 0 days Fri 1/10/25 Fr$3/10/25
1/20 € Submit 100%Design
100% Desion Review by City (2 Week) S days Mon 1/13/25 Fri 3/17/25 Final Bid Contract Document Desipn Phase 9 days Tue 1/22/25 Frt 3/31/25 Final Bid Contract Document Subinittal o days Frl 1/32/25 Fri 3/31/25 1/3) * Final Bid Contract Document Submittal
Aust City for Pubic Mectings, Outreach, and/or Tue 1/21/25 86217125 Presentation to Gly Council
Phase Ill: Old Phase (Assume 2 Months 8id Advertisement) 33 days Tua 2/28/25 Sri 4/13/25 phase li: a Phase (Assume 2 Months Bid Advertisement) Attend Pro-Bid Meeting 1 day Tue 2/18/25 Tue 2/23/25
Prepare Addendum 14 days Tue 2/18/25
Eld Opening Odays Fr14/13/75 Frl 4/13/25
4/11 0-90 ppening
Phase TV: Construction Phase (Assume 9 months 185 dayx Wed 5/7/25 Thu 2/5/26 Phase IV: Construction Phase (Assume 9 manths Construction Period) Construction Perfod)
Contract Award to Contractor 0 days Wed S/7/25 WedS/7/25 5/7%, Contract Award to Contractor
Pre-Construction Meeting 1 day Mòn 5/12/25 Mon 5/12/25
Submital Review 84 days Man 5/19/25 Tue 9/19/25
RE Response 86 days Man 5/19/25 Prl 9/39/25
Assist Change Ordars 6o days Wed 9/3/25 Wed 13/26/25
Final Walk-Through 1 day Thu 2/5/26 Thu 2/5/26
Construction Completion o days Thu 2/5/2G Thu 2/5/26
2/5 & Constructen Completion
24 days 300n2/9/26 Fri 2/27/20 Phase V: Post Construction Phase nose veross comeston roos
As-Butt Record Dravines 9 days Mon 2/9/20 Frl 2/20/26
Update Operation Manual Pian 14 days V0n 449140 Frl 2/23/25 Project City of Calexico 12) Menone * Critical Spit ........ Manual Progress - Chlorine Conversion Project Gaseous Chlorine Feed System to Liquid ....... Summary Hypochlorite Feed System
LEE+RO

SITES IXFRASTRUCTERE SHORTERS
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Pago 19
SECTION 5.

EXPERIENCE
LEE+RO

WALER INEHASTRUCTURE ENGISEEKS
City of Calexico
Chlori ed - Bassaus CAlarine Feed System To Liquid Hypochlorite Feed System

5. EXPERIENCE
The LEE + RO's Team has a demonstrated track record of successfufly performing the required project services on time, within budget and with very few construction change orders. in Exhibit 5-1 we include client references and descriptions for six LEE + RO projects with similar design elements including chemical storage and metering systems and monitoring and controlling of chemicai dosing, regulatory coordination and permitting, controls logic, automation and SCADA integration, as well as miscellaneous electrical and mechanical improvements. Also included as Exhibit 5-2 is a matrix identifying several of LEE + RO's similarly relevant projects.

Exhibit 5-1: LEE + RO Projects
Preliminary Design Report, Disinfection 2017-18 Reservoir Management Systems 2016-17 Reservoir Management Systems Reservoir Management Systems Sodium Hypochlorite System for the Convereion from Chlorine Gas to Sodium J. B. Latham Treatment Plant Hypochlorite at Water Treatment Plant Moulton Niguel Water District Moulton Niguel Water District Santa Margarita Water District South Orange County Wasterater
The City of El Centro Water Treatment Plant LEE + RO is providing engineering, design, and LEE + RO provided engineering, design, and LEE + RO provided engineering and design (WTP) disinfects the filtered water with LEE + RO provided the preliminary design report construction support services for the conversion construction support services for the conversion services for the conversion of on-site hypochlorite LEE + RO provided preliminary & final design gaseous chlorine before supplying it to the for conversion of gaseous chlorine system to of on-site hypochlorite generation, systems and of on-site hypochlorite generation systems and generation systems and liquid ammonia and construction phase engineering services for City's water supply system. However, the City bulk sodium hypochlorite system for the Brawley liquld ammonia systems to bulk liquid sodium liquid ammonia systems to bulk liquid sodium systems to bulk liquid sodium hypochlorite and retum activated sludge (RAS) and non- potable has concerns about the use of chlorine gas Water Treatment Plant. The Plant used chlorine hypochlorite and ammonia chloramine disinfection hypochlorite and ammonia chioramine disinfection ammonia chloramine disinfection systems at water chiorination systems at the J.B. Latham as a disinfectant, as chlorine gas is toxic and gas for chlorination (disinfection) of product systems at five (5) different water reservoir sites systems at three (3) different water reservoir sites two (2) different water reservoir sites in the Wastewater Reclamation Plant The purpose poses dangers to the public and operations water. The existing chlorine system consisted of in the MNWD service area. (T) 4 MG Crown Valley in the MNWD service area, (1) 10 MG East Aliso SMWD service area; (T) 6 MG Talega Zone 1 of this project was to replace the existing staff. LEE + RO provided the preliminary. finel one-ton chlorine cylinders stored in the chlorine Reservoir, (2) 2 MG Highlands Reservoir, (3) 2.5 Creek Reservoir, (2) Seville Reservoirs - 2ea. x1.125 Reservoir. and (2) 1.3 MG Estado Reservoir. chicrine gas chlorination system with a sodium design, and construction phase engineering storage room equipped with an overhead crane, MG Marguerite Reservoir, (4) 4 MG Moulton Peak MG, and (3) Mathis-Nellie Gail Reservoirs - 1ea. x SMWD performed extensive pilot testing of hypochorite storage and feed system. The services for converting the gaseous chlorine four chlorinators, and a chlorine gas scrubber. Reservoir, and (5) 5 MG Pacific Park Reservoir. Each 175 MG and Tea. x 4 MG. Each site contains one disinfection systems and decided to change to project included on 8,000 gallon capacity sodium disinfection system to a 12.5% bulk sodium Chlorine consumption was estimated belween site contains a potable water storage reservoir or two potable water storage reservoirs that supply 12.5% sodium hypochlorite and 38% ammonium hypochlorite storage tank, four Pulsafeeder hypochlorite disinfection system. The project 300 to 700 Ibs/day. Due to safety and other that supplies domestic water to the communities domestic water to the communities. The water is sulfate. Engineering services provided by LEE + chemical metering pumps, spill containment included modifications of an existing chlorine permit provisions, the City desired to convert the The water is disinfected utilizing chloramines in disinfected utilizing chloramines in the reservoirs to RO include designs for construction of new bulk structure, chemica and non- potable water lon-cyinder storage building into a 12.5% chlorine gas to sodium hypochlorite. Thescopeof the reservoirs to maintain the residual chlorine maintain the residual chlorine concentration prior sodium hypochlorite and ammonium sulfate piping, valves, electrical, and instrumentation sodium hypochlorite storage building. The work was to prepare a preliminary design report concentration prior to delivery to the communities to delivery to the communities. Each disinfection systems, Including all equipment, double-walled & control system. The project also included converted building housed two 6,500 gallons identifying advantages and disadvantages and Each disinfection facility contains new bulk sodium facility contains new bulk sodium hypochlorite chemical storage tanks, pumps, analyzers and evaluation of the adequacy of existing chlorine of double-contained HDPE storage tanks. ile cycle cost comparison of the conversion. hypochlorite and ammonia storage and feeding and ammania storage and feeding systems and controllers, connected piping, valves, electrical injection points, reuse of existing chlorine feed The project also included the replacement of The City considered an on-site hypochlorite systems and includes a masonry block chemical Includes a masonry block chemical storage building and instrumentation. The Estado Reservoir piping, and measures to control off gassing in existing chlorinators to peristaltic chemical generation in addition to the bulk hypochlorite storage building with separate rooms for each with separate rooms for each chemical, ventilation facility is not equipped with an RMS building and the chlorine pipe. feed pump skids and associated electrical storage option. The Report (with 30% design) chemical, ventilation and split system AC units for and split system AC units for the chemical rooms, a new RiS building Will be constructed. Both systems and controis, new chemical injection evaluated the on-site and bulk storage options the chemical rooms, storage tanks, chemical pumps storage tanks, chemical pumps and piping. reservoir sites will require a sodium hypochlorite piping to two injection points fi.e. two clarifiers including storage tanks, metering pumps, piping and piping, reservoir mixers, analyzers and dosage reservoir mixers, analyzers and dosage control. tank farm including double-wall storage tank, infet pipes and a clearweil), existing building control, chemical leak detection systems, sample chemical leak detection systems, sample and drain canopy structure, chemical fill station, elc. The structure modifications and modifications to and drain piping, electrical. process monitoring and piping, electrical, process monitoring and control design includes all components necessary for electrical, control and SCADA system. LEE + control via SCADA, shower/eyewash stations, and via SCADA, shower/eyewash stations. and site complete and operational reservoir management RO assisted the City in coordinating with the site utilities. Site modifications for the Highlands utilities. Site modifications for the East Aliso Creek systems. The existing Tank Shark mber at the Division of Drinking Water (DW) at the State and Marguerite chemical building include grading of chemical building include grading of the slope Estado Reservoir will be replaced with a new Water Resources Control Board for final plan the slope, protection of existing tree, modification and a retaining wall. Mathis-Nelle Gail requires PAX mixer. approval and WTP Operation Plan update. of chain link fence, and a retaling wall. temporary power during construction to maintain operation of the existing disinfection facility.

Client References Client Reterence: Client Reterence: Cilent Reference: Client Reference:

City of El Contro city of Brawley. Moulton Niguel Water District Moulton Niguel Water District Santa Margare Water District South Crannn County Wastewater Authorty Ruben Mireles Tricia Butler Brian Peck
280) 344-58007 mite es ObrawiCa gov 945; 425 3599 / 1dmyt/yshyn0mnwit.com 949) 425 3549/ tdmitryshynemnwil.com (949)459-6554/triciabosmitd com (949) 246-8338/ butterpeckagox het LEE+ RO
Me 10.60
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System To Liquid Hypochlorite Feed System Exhibit 5-2: Relevant Project Matrix

PROJECT DESCRIPTION / LOCATION CLIENT
Sodium Hypochlonte Tank Replacement Project, Edward C. Little Water Reclamation Facility West Basin Municipal Water District Caustic Tank & Transter Piping System Design. Rio Vista Water Treatment Plant Castaic Lake Water Agency Sodium Hypochlorite & Sodium-Bisulfile Storage & Feed System Valley Sanitary District Sodium Hypochlorite and Sodium Bisullite Systen Design:& Installation, Carbon Canyon Water Berychny Inland Empire Utilities Agency Facility
Sodium Hypochiorite System, JB. Latham Water Reclamation Plant South Orange County Wastewater Authority Socium Hypochlonte, Sodium Bisultite & Ferric Chioride Facilties Pomona Water Reclamation Plant County Sanitation Districts of Los Angeles County Chlorination & Dechlormation Chemical Facilities, Water Reclamation Piant No. 4 Coachella Valley Water District Water System Chioramine Disintection Facilities, Waterworks District 40 Department of Public Works, County of Los Angeles Ferric Chloride Full Scale Demonstration Test Hyperion Wastewater Treatment Plant West Basin Municipal Water District Ammonia Containment, Analyzer & Drainage Improvements. Eart Schmidt Filtration Plant Castalc Lake Water Agency Williams Reservoir Hypochlorite Station Crescenta Valley Water District Chemical Handing Facility Improvements, Jensen Water Treatment Plant Metropolitan Water District of Southern California Chemical Handing Facility Improvements Weymouth Water Treatment Piant Metropolitan Water District of Southern California Exxon-Mobil & Bitish Petroleum CMF Clean-in-Place Systems West Basin Municipal Water District 450-1 Reservoir Disinfection Facility: Otay Water District Chemical Enhanced Primary Treatment, Ericina Water Pollution Control Facility Encina Wastewater Authority Fluoridation Facilities Electrical As-Bullt Drawings. Jensen, Weymouth & Diemer Water Treatment Plants Metropolitan Water District of Southern California Filtered Etiuent Chlorination Project Jensen Water Treatment Plant Metropolitan Water District of Southern California Chlorine Facility Improvements, Skinner Water Treatment Plant Metropolitan Water District of Southern California Sultunc Acid Storage & Fooding Facility. Miramar Water Treatment Plant Three Valleys Municipal Water District Chlozine Dioxide System Exaluation & Contral System Assessment Skinner Water Treatment Piant Metropolitan Water District of Southern California Evaluation of Ferric Chloride Infection Points City of Corona Chemical Tank Farm & Chemical Distribution System for Oxidation Retrofit Program (ORP), Skinner Water Metropolitan Water District of Southern California Treatment Plant
Chemical System Improvements, Mills, Skinner, & Weymouth Water Treatment Plants Metropolitan Water District of Southern California Title 22 Chlonnation & Chiprine Storage and Handiing Facilities Water Reclamation Plant No. 10 (WRP 10) Coachella Valley Water District San Joaquin Reservoir Sodium Hypochlorite Facility Irvine Ranch Water District Actor: & Antelope Valley Disinfection Conversion Project Department of Public Works, County of Los Angeles Groundwater Replenishment System (GWR) Orange County Water District Fluorldation Tank Farm Facility, Mills Water Treatment Plant Metropolitan Water District of Southern California Chemical Facilities for Oxidation Retrofit Program (ORR). Diemer Water Treatment Plant Metropolitan Water District of Southern California Chlorine Containment Handing Facilities, Mills, Jensen and Skinner Water Treatment Plants Metropolitan Water District of Southern California Tertiary Water Recycimg Facilty Expansion. Water Reclamation Plant No. 7 (WRP 7) Coachella Valley Water District Treatment Plant & Electrical System Improvements. J.B. Latham Wastelater Treatment Plant South Orange County Wastewater Authority Flow Equalization and Effvent Monitoring Project, Regional Water Recyuling Plant No. 5 (RP-5) Inland Empire Utilities Agency Wastewater Treatment Plant Improvements Chemical Facilities: Brawley Wastewater Treatment Plant City of Brawley Wastewater Treatment Plant Improvements Chemical Facilities. Holtulle Wastewater Treatment Plant City of Hottville Bromate Contiol System Project Mills Water Treatment Plant Metropolitan Water District of Southern California LEE+RO

WATER IHFRASTRUCTURE ENGIHEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chiorine Feed System to Liquid Hypochlorite Feed System

JAY JUNG, PE

PROJECT MANAGER
Jay Jung has 19 years of process research and design, as well as water treatment facilities engineering project experience. His areas of expertise include experiment setup, pilot or full- scale testing, sampling and data analysis, and development of treatment process trains. He also has considerable experience with feasibility studies, analysis of existing process trains, and LICENSE CERTIFICATION preparation of project or preliminary design reports. During the last ten years, Mr. Jung has been Civil Engineer, CA #C75672 a project engineer and a project manager responsible for overseeing the development of plant design criteria, P&IDs, hydraulic profiles, and detailed facility design drawings and specifications.

His area of expertise includes chemical conditioning and chemical handling facilities, disinfection, EDUCATION spent backwash water treatment, granular activated carbon adsorption, and membrane filtration.

PHD. Candidate, University of
Southern California (Completed 4 EXPERIENCE
Years In Ph.D. Program)
El Centro WTP Chlorine Conversion Project. Project Manager for conversion of gaseous chlorine disinfection system to 12.5% bulk liquid sodium hypochlorite disinfection system. The project MS, Environmental Engineering. included modifications of an existing chlorine ton-cylinder storage building into a 12.5% sodium University Of Southern California
hypochlorite storage building. The project also included the replacement of existing chlorinators to peristaltic chemical feed pump skids and associated electrical systems and controls, new chemical MS. Environmental Engineering, injection piping to two injection points (i.e. two clarifiers inlet pipes and a clearwell), existing Yonsei University, Korea
building structure modifications and modifications to electrical, control and SCADA system. Jay Jung assisted the City in coordinating with the Division of Drinking Water (DDW) at the State Water Resources Control Board for final plan approval and WTP Operation Plan update. 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District. Project Manager for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area; (1) 10 MG East Aliso Creek Reservoir, (2) Seville Reservoirs - 2ea. x 1.125 MG, and (3) Mathis-Nellie Gail Reservoirs - 1 ea. x 1.75 MG and lea. x 4 MG. The water is disinfected utilizing chloramines in the reservoirs to maintain the residual chlorine concentration prior to delivery to the communities. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/eyewash stations, and site utilities. Site modifications for the East Aliso Creek chemical building include grading of the slope and a retaining wall. Mathis-Nellie Gail requires temporary power during construction to maintain operation of the existing disinfection 2017-18 Reservolr Management Systems Replacement, Moulton Niguel Water District. Project Manager for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the site contains a potable water storage reservoir that supplies domestic water to the communities.

The water is disinfected utilizing chloramines in the reservoirs to maintain the residual chlorine concentration prior to delivery to the communities. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process LEE+RO

WATER INFRASTRUCTURE ENGINEERS
lee-ro.com
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System

SAM LEE, PE

PROCESS / MECHANICAL ENGINEER
Sam Lee has 17 years of diversified civil, sanitary, mechanical and process engineering and design experience with water and wastewater infrastructure projects. His experience includes facility investigation and evaluation, condition assessments, documentation of as-built conditions through field verification of existing dimensions, piping and equipment layouts, engineering analysis and design, and construction phase engineering services for wastewater and water treatment plants,

LICENSE/CERTIFICATION
force mains and other wastewater and water conveyance and collection systems including booster Civil Engineer, CA #C78939
pump stations and lift stations, emergency generators and other auxiliary equipment. Through a wide variety of water infrastructure engineering projects, Sam has acquired diverse design and inter-discipline coordination skills.

EDUCATION
MS, Environmental Engineering. EXPERIENCE
University Of Southern California
El Centro WTP Chlorine Conversion Project. Project engineer for conversion of gaseous chlorine BS, Environmental Engineering, disinfection system to 12.5% bulk liquid sodium hypochlorite disinfection system. The project Yonsei University, Korea included modifications of an existing chlorine ton-cylinder storage building into a 12.5% sodium hypochlorite storage building. The project also included the replacement of existing chlorinators to peristaltic chemical feed pump skids and associated electrical systems and controls, new chemical injection piping to two injection points (i.e. two clarifiers inlet pipes and a clearwell), existing building structure modifications and modifications to electrical, control and SCADA system.

Reservoir Management Systems Replacement, Santa Margarita Water District. Project Process / Mechanical Engineer for the conversion of on-site hypochlorite generation systems and liquid ammonia systems to bulk liquid sodium hypochlorite and ammonia chloramine disinfection systems at two (2) different water reservoir sites in the SMWD service area; (1) 6 MG Talega Zone 1 Reservoir, and (2) 1.3 MG Estado Reservoir. Design for construction of new bulk sodium hypochlorite and ammonium sulfate systems includes all equipment, double-walled chemical storage tanks, pumps, analyzers and controllers, connected piping, valves, electrical and instrumentation. Design includes the construction of an RMS building at the Estado Reservoir facility and construction of a sodium hypochlorite tank farm including double-wall storage tank, canopy structure, chemical fill station, etc at both reservoir sites. The design includes all components necessary for complete and operational reservoir management systems. The existing Tank Shark mixer at the Estado Reservoir will be replaced with a new PAX mixer. The project is currently in final design with construction completion anticipated in 2019.
2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District. Project Process / Mechanical Engineer for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area, (1) 4 MG Crown Valley Reservoir, (2) 2 MG Highlands Reservoir, (3) 2.5 MG Marguerite Reservoir, (4) 4 MG Moulton Peak Reservoir, and (5) 5 MG Pacific Park Reservoir. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/evewash stations, and site utilities. Site modifications for the Highlands and Marguerite chemical building include grading of the slope, protection of existing tree, modification of chain link fence, and a retaining wall.

LEE+RO

WATER ENFRASTRUCTURE ENGIHEERS
lee-ro.com
City of Cafexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
Sam Lee, PE 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District. Project Process / Mechanical Engineer Process / Mechanical Engineer for the conversion of onsite hypochlorite generation systems to

12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area; (1) 10 MG East Aliso Creek Reservoir, (2) Seville Reservoirs - 2ea. x 1.125 MG, and (3) Mathis-Nellie Gail Reservoirs - 1 ea, x 1.75 MG and 1ea. x 4 MG. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/ eyewash stations, and site utilities. Site modifications for the East Aliso Creek chemical building include grading of the slope and a retaining wall.

Earl Schmidt Filtration Plant (ESFP) Washwater (WW) and Sludge System Improvements, Santa Clarita Valley Water Agency. Project Engineer for $7.5 million upgrading and improvements at the 56 mgd ESFP which treats State Project Water. WW from clarifiers and filters are stored in WW basins and pumped to the WW treatment facilities. The project design included two new 620,000 gallon capacity WW basins with automatic sludge scraper system and floating decanters, a WW wet well, upsizing of conveyance piping, a new sludge thickener and drying bed, electrical, and various site improvements.

Sand Canyon Pump Station (SPS) Rellability Analysis and Addition of Standby Generator, Santa design of an emergency power generation system. SCPS, built in 2006, has six 900 HP vertical generator cooled by the product water. The $3 million project included architectural, landscaping, structural, mechanical/electrical/ plumbing (MEP), security and communications, and civil/paving/ grading design elements.

Radial Gate Refurbishment Project, CRA Replacement Project, Metropolitan Water District of Southern California. Staff Engineer for the preliminary engineering and final design services for refurbishment and replacement of eight large hydraulic radial gates along CRA - Iron Mountain Wasteway, Eagle Wasteway to Reservoir, Eagle Reservoir Spillway, Eagle Sandtrap, Hinds Sandtrap, Coxcomb Wasteway, Rice Wasteway, and Vidal Wasteway. This project is to enhance water supply reliability of the CRA. These gates were installed during the original CRA construction in the late 1930s and have been in operation since the CRA was commissioned into service in 1941. The gate inspection performed in 2003 and 2011 revealed various stages of deterioration. LEE & RO performed field investigation and assessment of the gates and developed a specific refurbishment and rehabilitation of each gate and supporting structures and appurtenances. Total estimated project construction cost is $7 million.

CRA Curbing and Monitoring Well Improvements Project, Metropolitan Water District of Southern California. Staff Engineer to improve the CRA open canal. Improvements will include the addition of curbing along the canal sidewalls where overtopping could occur and the repair of cracks in the canal liner. There are three proposed curbing locations for the canal along the CRA These include upstream from Freda Siphon/Rice, Coxcomb Siphon area, and Pinto Siphon area. • Curbing upstream of Freda Siphon/Rice from MM 29.00 to MM 38.4 (9.4 miles) • Curbing upstream of Coxcomb Siphon area from MM 88.01 to MM 92.64 (4.63 miles) • Curbing upstream of Pinto Siphon area from MM 103.42 to MM 104.38 (0.96 miles) Also included in the project are CRA cracked liner repairs at numerous locations and installation of level monitoring wells and related facilities. Level monitoring at additional locations is necessary to prevent pressurization of cut and covered conduits. The project will be executed in two phases:
(1) work to be done during aqueduct shutdown, and (2) work to be done during normal 8-pump flow with about 1,776 cfs through the aqueduct. This Task Order is to provide final design services for installation of erosion protection curbing, cracked liner repairs, monitoring wells and related - facilities to allow CRA to function at full flow conditions. LEE + RO performed extensive field investigations to gather existing facility conditions accurately.

LEE+RO

WATER INFRASTRUCTURE ENGIHEERS
lee-ro.com
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System

MICHAEL ASSADOURIAN, PE

ELECTRICAL / INSTRUMENTATION & CONTROLS
Michael Assadourian has over 30 years of experience covering electrical and control systems engineering, design, construction, and project management for water and wastewater treatment plants, pump stations, emergency power generation systems, water conveyance facilities, petrochemical plants, and refineries. He has in-depth knowledge of power distribution and lighting systems, both NEMA and IEC standards-based; motor controls and variable frequency

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drives; coordination with power & utility companies; and SCADA and radio/microwave systems.

Electrical Engineer, CA #E14390
His work experience includes P&ID development, electrical system condition assessment, ETAP analysis, load flow and short-circuit analysis, and protective device coordination studies. He has extensive experience in retrofitting existing facilities with new power and controls and resolving

EDUCATION
construction-related problems. Michael has provided a wide variety of construction support MS, Industrial and Systems services including equipment & shop drawings review, processing of RFls, resolving construction Engineering & Management,
issues, and electrical system commissioning and start-up. Michael's experience includes electrical University of Southern California system designs for several Moulton Niguel Water District projects.

BS, Electrical Engineering, EXPERIENCE
University of Southern California
El Centro WTP Chlorine Conversion Project. Project electrical and control engineer for conversion of gaseous chlorine disinfection system to 12.5% bulk liquid sodium hypochlorite disinfection system. The project included modifications of an existing chlorine ton-cylinder storage building into a 12.5% sodium hypochlorite storage building. The project also included the replacement of existing chlorinators to peristaltic chemical feed pump skids and associated electrical systems and controls, new chemical injection piping to two injection points (i.e. two clarifiers inlet pipes and a clearwell), existing building structure modifications and modifications to electrical, control and SCADA system.
2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District. Project Electrical and Controls Engineer for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area, (1) 4 MG Crown Valley Reservoir, (2) 2 MG Highlands Reservoir, (3) 2.5 MG Marguerite Reservoir, (4) 4 MG Moulton Peak Reservoir, and (5) 5 MG Pacific Park Reservoir. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/eyewash stations, and site utilities.
2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District. Project Electrical and Controls Engineer for the conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area. Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/eyewash stations, and site utilities. One of the reservoir sites requires temporary power during construction to maintain operation of the existing disinfection facility.

LEE+RO

WATER INFRASTRUCTURE ENGINEERS
lee-ro.com
City of Calexico
(
Chlorine Conversion Project - Gaseous Chlorine Feed System to Lquld Hypochlorite Feed System
Michael Assadourian, PE Treatment Plant and Electrical System Improvements (FY2013 Southside Plant Improvements), Electrical/ Instrumentation J. B. Latham Wastewater Treatment Plant, South Orange County Wastewater Authority. & Controls Electrical and Controls Engineer for this $7.5 million project. The Southside Plant Improvements Project consists of four individual components; (1) replacement of the Plant No. 2 power supply; (2) construction of an Enhanced Primary Coagulation System (chemical feed system) for Plant No.2; (3) mechanical rehabilitation of the thirteen (13) rectangular secondary clarifiers; and (4) implementation of structural and seismic improvements.

RP-5 Flow Equalization and Effluent Monitoring Project, Inland Empire Utilities Agency (IEUA).

Electrical Engineer for this project. RP-5 produces Title 22 recycled water with a current capacity of 10 mgd. The project is comprised of several components, including use of recycled water to match the capacity of the Recycled Water Pump Station by implementing an automated system that will bypass peak flows into the equalization basin, providing a new flow metering system at the inlet of the chlorine contact basin to better control chemical usage and allow for more accurate dosing of chlorine, replacement of the sodium hypochlorite pumping system and a redesign of the existing sodium bisulfite pumps, and a shade structure to cover the sodium bisulfite pumps.

Automatic Transfer Switch (ATS) Replacement, J. B. Latham Treatment Plant, South Orange County Wastewater Authority, Dana Point. Electrical Engineer for assessment and design of ATS that did not meet the arc flash maintenance boundaries - regular ATS inspection and testing cannot be performed without internally accessing the ATS where 480 VAC 3 PH bus bars are extended from the main service to the metering section. Performed field investigation and designed new ATS system equipped with external controls and testing capabilities.

Collection System Pumping Plants Rehabilitation and Generator Replacement Project (TOS 21 CIP 7181, 7182, 7183, 7186), Bureau of Engineering, City of Los Angeles. Lead Electrical Engineer for the construction phase for the rehabilitation of four City of Los Angeles pumping plants located in Terminal Island. This $6.9 million includes the removal and replacement of the existing pumps, suction and discharge piping and valves, VFDs, emergency generators, and ATS. All existing generators are being replaced with Tier 4 Compliant generators. During the pre-design phase of this project, performed an extensive condition assessment which also identified several other areas within each pumping plant in need of modifications, such as ventilation systems, wet well corrosion, structural defects, and NFPA electrical code violations.

Electrical Improvements and Addition of Standby Generator, Water Reclamation Plant No. 10 (WRP 10), Coachella Valley Water District (CVWD), Palm Desert. Electrical Engineer for addition of a 1,750 kW standby generator; installation of 2,000A circuit breakers in the blower building; Installation of a new Switchgear M1-B complete with new ATS; eliminate the three motor circuit breakers and motor feeder circuits from M-1 to the blower building; and addition of utility feeder circuits from Switchgear M-1 to new M-1B using newly installed conduits and pull boxes to power three new 540-hp aeration blowers on utility power. The total construction cost was $2.5 million.

Hyperion Secondary Effluent Pump Station (HSEPS) Expansion Project at Hyperion Treatment Plant (HTP), West Basin Municipal Water District, Carson. Electrical Design Engineer for a $14.7 million capacity expansion project (from 70 to 90 MGD). Project includes two new 20 MGD pumps (190 feet of TH), each driven by 800 HP, 4,160V motor and VFD. Work includes extensive electrical system reliability improvements and expansion of existing electrical system including addition of a new 3,000 kW emergency generator and fuel storage system. The original project envisioned to bring a second power feeder from the LADWP for reliability improvements. After in-depth analysis, a new emergency generator is selected over the secondary feeder.

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City of Calexico
Chlorine Conversion Project - Gaseous Chiorine Feed System to Liquid Hypochlorite Feed System

JAMES GINGRICH, PE, SE

STRUCTURAL ENGINEER
James Gingrich is a California registered structural engineer with more than 30 years of structural analysis, engineering, design, constructability analysis, value engineering, project coordination and construction management experience. He has been the structural project manager, QA/QC reviewer, and lead structural engineer for planning, investigation and condition assessment, LICENSE/CERTIFICATION preparation of preliminary & final design, seismic analysis and upgrading, and construction phase Civil Engineer, CA #C34701, engineering services for a wide variety of concrete and steel structures for water conveyance and Structural Engineer, CA #53023 pumping facilities, water storage, treatment and distribution facility projects for Metropolitan Water District (MWD) of Southern California. His experience and expertise include rehabilitation & retrofit engineering & designs for existing facilities. His representative experience includes lead designer EDUCATION for the Lake Matthew Outlet Facilities, Colorado River Aqueduct Pumping Plant Seismic Upgrades, BS, Civil Engineering, and Oxidation Retrofit (Ozone Disinfection) Projects for MWD's Mills, Jensen, Weymouth, Skinner, California State and Diemer Water Treatment Plants.

Polytechnic Universily,
Pomona EXPERIENCE
Graduate courses in 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District, Lead Structural Dynamics & structural engineer for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites Advanced Structural Analysis,
Cal State University, Los Angeles
MG Marguerite Reservoir, (4) 4 MG Moulton Peak Reservoir, and (5) 5 MG Pacific Park Reservoir.

Each disinfection facility contains new bulk sodium hypochlorite and ammonia storage and feeding systems and includes a masonry block chemical storage building with separate rooms for each chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/ eyewash stations, and site utilities:

Oxidation Retrofit Projects (ORPs) at Five Water Treatment Plants, Metropolitan Water District of Southern California. Lead structural engineer responsible for structural analysis and preparation of structural drawings & specifications and construction phase engineering for the $850 million ORP projects at 520 mgd Weymouth, 750 mgd Jensen, 220 mgd Mills, 630 mgd Skinner, and 300 mgd capacity Diemer Water Treatment Plant. Also, served as lead QA/QC structural engineer for structural designs produced by outside consultants. during preliminary design and provided Structural QA/AC reviews for final design.

Filter Building and Filter Complex Seismic Upgrades, Weymouth Water Treatment Plant, Metropolitan Water District of Southern California. Lead structural engineer for preliminary and final design of a large seismic upgrade project for the filter buildings and filter complex at the 520 mgd capacity Weymouth Water Treatment Plant in the City of La Verne. In 2016 received the American Concrete Institute Excellence in Concrete Construction Awards (First Place Award in Repair and Restoration Category at Southern California Chapter and Second Place at the National Convention)
Phase 4 Plant Expansion, Skinner Water Treatment Plant, Metropolitan Water District of Southern Callfornia. Served as lead structural engineer responsible for the preparation of Module 7 structural construction drawings, calculations and specifications. The phase 4 plant expansion project included addition of 110 mgd Module No. 7 (clarifiers and filters), a 34 mgd capacity LEE+RO

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City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
JAMES GINGRICH, PE/SE Washwater Reclamation Plant No. 3, new and consolidated chemical tank farms and feed systems, Structural Engineer sludge handling facilities expansion, new water pumping stations; and related work.

Lake Mathews Outlet Facilities, Metropolitan Water District of Southern California. Lead structural engineer responsible for the preparation of structural construction drawings, calculations and specifications. Performed the finite element dynamic structural analysis of the new outlet tower structure.

Development of Structural Design Manual Structural Engineering Guidelines, Metropolitan Water District of Souther Callfornia. Lead efforts for the development, preparation and maintenance of Metropolitan's Structural Design Manual, standard structural details, master structural specifications, and standards such as the structural portions of the standard Preliminary Design Report, and submittal review procedures.

Lake Perris Dam and Outlet Facilities, Department of Water Resources (DWR), State of California.

Participated on the value engineering team evaluating proposed remediation measures and developed alternative options for the seismic rehabilitation of the Lake Penis dam and outlet tower.

Selsmic Retrofit of Colorado River Aqueduct (CRA) Pumping Plant Buildings, Metropolitan Water District of Southern California. Served as project manager and lead structural engineer for the seismic retrofit of the pump house buildings at the Hinds, Eagle Mit, Iron Mit, Gene and Intake pumping plants. Developed seismic retrofit concepts, and prepared construction drawings including calculations and specifications for construction and Metropolilan forces work. • Seismic Retrofit of Colorado River Aqueduct (CRA) Discharge Pipelines, Metropolitan Water District of Southern California. Served as project manager and lead structural engineer for the seismic retrofit of the delivery pipelines (penstocks) at the Hinds, Eagle Mt, Iron Mt, Gene and Intake pumping plants. Developed retrofit concepts and prepared construction drawings, calculations and specifications for construction and Metropolitan forces work. Performed the finite element dynamic structural analysis of the pipelines.

Seismic Retrofit of Electrical Buildings Nos. 1 and 2, Mills Water Treatment Plant, Metropolitan Water District of Southern California. Served as design manager and lead structural engineer for the preliminary and final design for the seismic retrofit of two existing buildings, including mentoring & training the design and structural calculations of junior structural engineers.

Inland Feeder Pressure Control Structure, Metropolitan Water District of Southern California.

Served as design manager responsible for the coordination of multi-disciplined team and the preparation of construction drawings and specifications.

Colorado River Aqueduct (CRA) Quagga Mussel Study, Metropolitan Water District of Southern California. Served as design manager responsible for preparing report evaluating the effects of the Quagga mussel infestation on the facilities (pumping plants, siphons, intake structures, tunnels etc. along the entire reach of the Colorado River Aqueduct.

Diemer Washwater Reclamation Plant, Metropolitan Water District of Southern California.

Participated on the value engineering team evaluating the proposed new spent backwash reclamation plant and developed options.

Grimes Canyon Groundwater Field Chlorination Facilities, Caligula's Municipal Water District.

Served as design manager, lead structural engineer, lead civil engineer, and architect for the design and construction of chlorination facilities for one of Metropolitan's member agencies.

Lake Charles Oil Refinery, Lake Charles, LA, Conoco OIl Co. Performed structural design of hydraulic decoking facilities for Conoco Oil Co. The 300-ft. tall decoking towers were designed for hurricane wind load conditions near the Gulf of Mexico. Served as field engineer during construction.

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City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System

RAMESH BACHUVALA, EIT

SITE CIVIL / UTILITY RESEARCH
Ramesh Bachuvala has over 18 years of experience in planning, design, and construction of municipal water and wastewater infrastructure, including water mains, booster pump stations, flow control facilities, storm drains, sewers, force mains, lift stations, and related grading and other site preparation work. He served as a project engineer, senior civil designer and oversees the work of CAD designers in the preparation of construction plans. Ramesh has extensive experience in preparing design plans for pipeline construction and street improvements within the public LICENSE/CERTIFICATION right-of-way. Areas of his expertise include utility search and coordination with utility companies; Engineer-in-Training #143515 hydraulic and hydrology analysis; pipeline plan and profiles, WQMP/SWPPP reports; traffic control design; and ROW and easement analysis and coordination.

EXPERIENCE

EDUCATION
MS, Geographical Info, Systems. 2017-18 Keservoir Management Systems Replacement, Moulton Niguel Water District. Civil FH-University of Karisruhe-Germany Engineer for conversion of onsite hypochlorite generation systems to 12.5% bulk liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the BS, Civil Engineering, MNWD service area, (1) 4 MG Crown Valley Reservoir, (2) 2 MG Highlands Reservoir, (3) 2.5 MG Osmania University, Marguerite Reservoir, (4) 4 MG Moulton Peak Reservoir, and (5) 5 MG Pacific Park Reservoir. Each ndia
chemical, ventilation and split system AC units for the chemical rooms, storage tanks, chemical pumps and piping, reservoir mixers, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring and control via SCADA, shower/ eyewash stations, and site utilities. Site modifications for the Highlands and Marguerite chemical building include grading of the slope, protection of existing tree, modification of chain link fence, District 2 Water Main Replacement Project, City of Pomona, CA. Civil Engineer for preparation of construction drawings and traffic control plans for the replacement of 16,000 LF of existing water mains of various sizes with 8-inch ductile iron pipe in the streets of downtown Pomona. Project design consisted of replacement of existing water lines, connection to and relocation of existing meters, replacement of fire hydrants, connections to existing water system at street intersections, and pavement repair/upgrade. Duties also included coordination with surveyor for preparation of base map, utility verification and potholing, utility company coordination and review.

Stagecoach Park Reclaimed Water Line, City of Corona. Senior Civil Engineer - Designer for preparation of construction and traffic control plans for a 12-inch dia. reclaimed waterline, 7,500 feet long. The alignment extended from the intersection of Bluff Street and River Road in Norco, southeast along River Road to Corydon Street, then southwest along Corydon Street to Stagecoach Road. The pipeline was constructed utilizing standard cut and cover construction. Additionally, there were tie-over connection from the City's existing potable water system to the new reclaimed water pipeline at Stagecoach Park. Coordinated with the surveyor for preparation of the base map, outside agencies for utility verification, and potholing.

Access Road Improvements for San Diego Gas and Electric (SDG&E), CA. As a Civil Designer, Ramesh's responsibilities included grading designs for access roads and earthen pads for each of 273 high voltage electrical towers for SDG&E. The designs required balancing cut and fill quantities due to steep terrain of some sections of the project and helicopter pads where an access point was not a practical approach.

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WATER INFRASTRUCTURE ENGINEERS
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City of Calexice
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochforite Feed System
Glen Ivy Pipeline Relocation Project, City of Corona. Project Civil Engineer for relocation design of RAMESH BACUVALA, EIT two segments of existing 18-inch Glen Ivy Pipeline to accommodate widening of Temescal Canyon Site Civil / Utility Research Road for Riverside County. His duties included preparation of construction drawings and traffic control plans.

District 1 and 6 Water Main Replacement Project, City of Pomona. Project Civil Engineer for the preparation of construction drawings and traffic control plans for replacement of 5,500 LF of existing ductile iron water mains of sizes between 6- to 10-inch dia. in Gordon Street and Bonita Avenue. Project consisted of replacement and abandonment of existing water mains, connection to existing water meters, replacement of fire hydrant assemblies, connections to existing water mains at several street intersections, new waterline crossing over the Thomson Creek Channel, and pavement repair/repaving.

Brookhurst Street/Parliament Avenue Sewer Improvements, Garden Grove Sanitary District, Garden Grove. Civil Engineer for the preparation of construction drawings and traffic control plans for 6,500 LF of 12 to 18 inch replacement sewer on Brookhurst Street and Parliament Avenue. The project also included a double barrel inverted siphon which required jacking and boring under the existing Anaheim- Barber City Channel. Other project components included surveying for preparation of the base map and geotechnical investigations for preparation of the geotechnical report.

Edwards Varsity Water Main Replacement Project, City of Huntington Beach, Project Engineer for engineering, design and construction support services for replacement of approximately 3,150 LF of potable water pipelines, service laterals, and appurtenances. The project is in the residential community immediately northwest of the intersection of Edwards and Varsity Streets. The project is to replace 8-in, and 6-in. asbestos cement pipe (ACP) with AWWA C900 PVC pipe. Construction documents prepared fully described the best management practices (BMPs), Project issues included removal and disposal to AC pipe, community outreach and public relations, traffic control during construction and minimizing water service disruption.

District 4 Phase Ii Water Main Replacement Project, City of Pomona. Civil Engineer for the preparation of construction drawings and traffic control plans for the replacement of 10,500 LF of 4- and 6-inch water main with 8-inch ductile iron pipe on several residential areas within the City of Pomona. Project design consisted of replacement and abandonment of existing water lines, connection to existing water meters, replacement of fire hydrant assemblies, connections to existing water system at several street intersections, and pavement repair/upgrade.

District 1 and 2 Water Main Replacement Project, City of Pomona. Civil Engineer for the preparation of construction drawings and traffic control plans for replacement of 7,500 LF of existing 6-inch water main with 8-inch ductile iron pipe on White Avenue. Project design consisted of replacement and abandonment of existing water lines, connection to existing water meters, replacement of fire hydrant assemblies, connections to existing water system at several street intersections, and pavement repair/upgrade.

Rehabilitation of Well 22/Booster Pumping Facility, City of Garden Grove. Civil Engineer for preparation of Preliminary Design Report which included proposed replacement engines, pump hydraulic testing, sizing of replacement pumps, sizing of new air conditioning unit, and - miscellaneous improvements.

Mead Valley Elementary Lift Station, Val Verde Unified School District, Perris. Civil Engineer for preparation of plans for the lift station which included two submersible pumps, associated ( piping, valves, flow meter, electrical and control equipment. Design components included a 10- foot diameter wet well, prepackaged ozone odor control system, and emergency generator set.

Design was reviewed by Western Municipal Water District for conformance to their lift station design standards and guidelines.

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City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
JOHN T. YOUNG,PE

TECHNICAL ADVISOR & QA/QC
John Young has 40 years of mechanical design experience. In the Last twenty-five years John worked with Metropolitan Water District of Southern California (MWD).Project Design Manager for various CIP projects including Water Treatment Plant Oxidation Retrofit Projects, Solids Handling and Water Reclamation, and Improvements projects, domestic water system improvements projects, and large size valves (slide gates, roller gates, fixed cone valves) replacement projects.

LICENSE/CERTIFICATION

EXPERIENCE
Mechanical Engineer CA. # M026419
Mills and Jensen Finished Water Reservoir Cover and Liner Replacement Project, EDUCATION Metropolitan Water District of Southern California. Design Manager and mechanical engineer BS. Mechanical Engineering, for the preliminary design reports for the Mills and Jensen finished water reservoir cover and University of California At Los Angeles liner replacement project. The reports studies the following area of concern:
• Enhancing mixing in the reservoirs
• Analyzed the type of material for the cover and liner • Improving the existing rainwater removal system
• Improving the underdrain systems
• Updating the leakage detection/monitoring system
Weymouth Domestic Water System Improvements, Metropolitan Water District of Southern California. Design Manager for the surge tank installation, pump rehabs, and distribution piping system expansion.

MWD Copper Basin and Gene Wash Dam Discharge Valve. Design Manager for the MWD Copper Basin and Gene Wash Dam Discharge Valve (42" dia. and 54" dia. fixed cone valves) Replacement Project.

MWD CRA Radial Gate Replacement Projects. Design Manager for the radial gate replacement projects.

MWD CRA Domestic Water Treatment System Replacements. Design manager for the water treatment system replacements.

MWD Copper Basin Reservoir and Lake Mathews' Reservoir and Forebay. Design Manager and mechanical engineer for the sodium hypochlorite storage and feed systems.

Copper Basin Reservoir Outlet Gates Metropolitan Water District of Southern Californla Design Manager and mechanical designer for the refurbishment of reservoir gates.

MWD Dierer Oxidation Retrofit Program. Program Manager for Vehicle Maintenance Facilities, Plant Maintenance Facilities, and Chemical Tank Farm.

MWD Diemer Water Treatment Plant. Project Manager for the Diemer Solids Handling Facilities and Guardhouse Relocation projects.

Jensen Oxidation Retrofit Project. Design Manager for the Jensen Oxidation Retrofit Project.

Skinner Solids Handling Facilities Project. Design Manager for the Skinner Solids Handling Facilities Project.

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City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
JOHN T. YOUNG, PE
Technical Advisor & OA/QC OC-88 Pump Station. Project Engineer for the feasibility study report.

Diemer and Weymouth Chlorine Containment Projects. Provided technical supervision.

Inland Feeder Pressure Control Structure Project. Mechanical project engineer.

Jensen Filtration Plant Service Center Project Mechanical project engineer.

Weymouth Projects Supervising engineer for used washwater pumpback station, ODP chemical feed systems, water quality sample pumps, review of the Water Quality building, and ODP. & LEE RO

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City of Calexico
Chlorine Conversion Project -- Gaseous Chorine Feed System to Liquid Hypochlonte Feed System

DHIRU PATEL, PE

PRINCIPAL-IN-CHARGE
Dhiru Patel has over 30 years of water and wastewater facilities engineering, project management and business management experience, He has managed and overseen projects involving study, PDR, final design and construction support phases for distribution, conveyance, treatment and supporting facilities for water/wastewater/water reclamation projects. He has extensive experience with project management, plant and process engineering studies, preliminary engineering, final design, construction engineering support, troubleshooting, and operations and maintenance LICENSE/CERTIFICATION (O&M) support for water and wastewater treatment facilities. Dhiru serves as Principal-in-Charge Chemical Engineer CA #CH4264 and Project Director for many of our as needed engineering services contracts. As the Principal- Certified Permitting Professional. in-Charge for this contract, Dhiru will have corporate responsibility for the entire project team's SCAOMD

EDUCATION EXPERIENCE
MS. Chemical Engineering, 2016-17 and 2017-18 Reservoir Management Systems Replacement Projecis (Phase 1& University of Southern California,
Phase 2), Moulton Niguel Water District. Principal-In-Charge responsible for overseeing the Los Angeles engineering, design, and construction support services for the conversion of on-site hypochlorite BS, Chemical Engineering, generation systems to bulk liquid sodium hypochlorite for ammonia chloramine disinfection for Indian Institute of Technology, three (3) different water reservoir sites in the MNWD service area for the Phase 1 project and at Bombay, India five (5) reservoir sites for the Phase 2 project. Each site contains one or two potable water storage reservoirs that supply domestic water to the local communities, The water is disinfected utilizing chloramines in the reservoirs to maintain the desired residual chlorine concentration prior to delivery. Each disinfection facility contains sodium hypochlorite and ammonia storage and feeding systems and includes a chemical storage building, storage tanks, chemical piping, analyzers and dosage control, chemical leak detection systems, sample and drain piping, electrical, process monitoring SCADA, HVAC, safety devices, and site utilities.

On-Call Professional Engineering Services for Capital Improvement Program Implementation, Moulton Niguel Water District. Principal-in-Charge for various task orders issued by MNWD under the on-call contracts. MNWD has issued 22 task orders to date. Representative projects include:
• La Siena Mainline Replacement
• Utility Main Breaker Replacements at Lower Salada & Aliso Creek Lift Stations • Flores Ave. 8-inch Water Main Installation
• Gallup Circle Sewer Replacement
• Del Avion Lift Station Auxiliary Generator Repiacement • Aliso Creek Lift Station Rehabilitation
• Lower Boundary Oak Lift Station Upgrade
• Saddleback Pump Station Auxiliary Pump & Engine Replacement • Upper Salada Electrical Switchgear Replacement
• Service Entrance Replacements at 3 Stations
Various Projects, West Basin Municipal Water District. Principal-In-Charge responsible for overseeing various engineering services and construction management services projects for West Basin. The engineering services projects include the Verification of Electrical System Documentation Project at the Edward C. Little Water Reclamation Facility and satellite facilities, the Ferric Chloride Full Scale Demonstration Test Project at Hyperion Wastewater Treatment Plant, and LEE+RO

WATER INFRASTRUCTURE ENGINEERS
lee-ro.com
City of Calexico
Chiarine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochforite Feed System
the Variable Frequency Drives Design Project for the barrier pumps at the Edward C. Little Water

DHIRU PATEL, PE
Reclamation Facility. The construction management services project includes the Construction Principal-In-Charge
Management, Inspection and Testing Services for Anza Ave, Lateral and Imperial Ave. Lateral Project in El Segundo and Torrance.

On-Call Engineering Services, Castaic Lake Water Agency. Principal-In-Charge and Project Director responsible for overseeing various engineering services for a variety of projects at the CLWA water distribution, conveyance, treatment, and support facilities. The general scope of services required includes conducting evaluations and studies, performing preliminary designs, final designs, preparation of specifications, and engineering services during construction.

Water Filtration Plant Improvements and Rehabilitation, Metropoliten Water District of Southern California. Project Manager/Engineer for preparation of preliminary design reports and final design documents for various improvement projects: Washwater Reclamation No. 2 Rehabilitation and water quality monitoring vault addition at the Skinner Plant; Filter valve replacement project for Weymouth Plant; Electrical reliability study for Weymouth Plant; solids handling design at Weymouth and Diemer Plants and Chlorination Improvements designed to reduce production of THMs at the Weymouth and Diemer Filtration Plants.

Chlorine Containment and Handling Facillties (CCHFs) for Skinner, Jensen, and Mills Filtration Plants, Metropolitan Water District of Southern California. Project Manager for the preparation of studies, preliminary design reports and final design documents for CCHFs at three MWD water treatment plants. Each CCHF has an estimated construction cost of approximately $20 million and contains either 90-ton chlorine rail cars or 19-ton trailers and includes chlorinators, evaporators, chlorine gas and solution piping, ventilation, and a chlorine scrubbing system.

Mills Water Treatment Plant, Chemical Systems Upgrades, Modules 1 & 2 Rehabllitation and Single Point Injection Facility Upgrades, Metropolitan Water District of Southern California.

Project Manager for conceptual studies, preliminary design and final design for the Chemical Systems Upgrade project, Modules 1 & 2 Rehabilitation project, and the Single Point Injection project to enable the Mills plant to operate at 326 mgd capacity. The chemical systems include new feed pumps, feed pump controls, and control valves for injection of chemicals ahead of the modules or filters. Modules 1 & 2 were inactive for number of years and required complete new instrumentation and controls. The single point injection enhances operational flexibility and reduces 0&M costs.

Exxon-Mobil and BP CMF Clean-in-Place Systems, West Basin Municipal Water District. Project Manager for preparation of preliminary design, final design, and engineering services during construction for the design and implementation of skid mounted Microfiltration Clean-In-Place (CIP) systems at two of the District's satellite facilities located at the Exxon-Mobil Refinery in Torrance and the British Petroleum Refinery in Carson. The District's satellite facilities further treat Title 22 recycled water using microfiltration (MF) followed by reverse osmosis for product water to be utilized for boiler and cooling tower applications at the refineries. This project provided a second CIP system at each facility, integrated with the existing CIP systems, to increase the efficiency and protection of the MF treatment process.

Rio Vista Water Treatment Plant Facilities Improvement Projects, Castic Lake Water Agency.

Project Manager responsible for providing conceptual design, final design and construction phase ( services for major and minor capital improvement projects at the Rio Vista Water Treatment Plant (RVWTP) for Castaic Lake Water Agency (CLWA). Plant improvements projects included expansion of the Maintenance Building, caustic tanks and feed piping, chlorine scrubber evaluation, intake ( pump station generator systems modifications and filter to waste hydraulics improvements. The $5 million expansion of the existing Maintenance Facility included architectural, mechanical/HVAC, electrical, life safety and fire protection.

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DIR Certification Appendix B
4/15/24, 5:21 PM Registrations
Contractor Information Registration History
Effective Date Expiration Date
Legal Entity Name
LEE & RO, INC. 06/18/18 06/30/19
Legal Entity Type 06/30/18
Corporation 05/18/17
Status 07/14/16 06/30/17
Active
Registration Number 08/04/15 06/30/16
1000015613
Registration effective date 03/17/15 06/30/15
07/05/23 07/30/19 06/30/20
Registration expiration date
06/30/24 07/02/20 06/30/21
Mailing Address
1199 S. FULLERTON ROAD CITY OF INDUSTRY 91748 C... 07/19/21 06/30/22 Physical Address 07/19/22 06/30/23
1199 S. FULLERTON ROAD CITY OF INDUSTRY 91748 C...

Email Address 07/05/23 06/30/24
[email protected]
Trade Name/DBA
LEE + RO, INC.

License Number (s)
CSLB:681020
CSLB:681020
Legal Entity Information
Corporation Entity Number: 0947689
President Name: Charles Ro
Vice President Name: Rick Liskow
Treasurer Name: Charles Ro
Secretary Name: Eric Lovering
CEO Name: Dhiru Patel
Agency for Service:

Agent of Service Name: Denise Morales
Agent of Service Mailing Address: 1199 S. Fullerton Road City of Industry g Worker's Compensation
Do you lease employees through Professional Employer Organization (PEO)?: No Please provide your current worker's compensation insurance information below:

PEO PEO PEO
PEO InformationName Phone Email
https://cadir.my.salesforce-sites.com/ContractorSearch/registrationSearchDetails?id=a1R8y0000019njwEAA 112 4/15/24, 5:21 PM Registrations
Insured by Carrier
Policy Holder Name: LEE & RO,
Insurance Carrier: HARTFOR
Policy Number: 37478
Inception date: 10/24/22
Expiration Date: 10/24/23
-
https://cadir.my.salesforce-sites.com/ContractorSearch/registrationSearchDetails?id=a1R8y0000019njwEAA 2/2

EXHIBIT B

SCHEDULE OF CHARGES
10 City of Calexico
Chiarine Conversion Profect - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
Exhibit 1: Fee Estimate
E7 TET Other
Tot i Litter tOTAL
Heisn
$273 $242 $205 $139 3T73 3153 $195 -$110

1. Project Mansgent ON/OC we
Task 11 Project Management, Cottract Acminetration and Accounting (9 Months of Final Design, 20 60 $13,120 $200 $13,320 2 Months of Bid Phase, 9 Months of Construction Phase)
Task 1.2 OA/OC 20 45 $10,086 $50 $10,136
Subtotel Tesk 1, Project Management, Coordinston and Meeting 50 20 24 105 $23,206 $250 323,456 a le 2 Project Setin. Sile Vait and Preliminity Design Meeting Task 21 Project Setup $1972 31972
Task 2.2 Sie Visit and kivestigstion $3,654 $000 54,058 Task 23 Preminary Design Kick-Off Meeting $3651 $400 $4,054 Subtotal Task 2, Project Setup, Site Visit and Preliminary Design Meeting 16 10 46 $9,280 $400 $9,680 Task 31 Drati Feasibility Study/Preliminary Design Report 118 $21404 $50 321,454 Task 32 Final Feasality Study/Frediminary Design Report $12,12 $50 $12762 16 18 22 60 10 32 16 4 188 $34.116 $100 $34,216
Subtotal Task 3, Feasiblity Study/Prelinary Design Report Tack 45Final Design (Plans Specifications and Cost Estimates) 30 24 204 $34,648 $50 $34,698
Task 41 50% Desion Submitat
20 €0 28 260 $44,510 $50 $44,560
Task 42 90% Design Submitel - =
20 15 $20,542 $50 $20,592
Task 43 100% Design Submittal
38 44 124 42 65 120 68 582 $99,700 $I5O $99,850
Sabtotal Tark 4, Final Design (Plans, Specificallons and Cost Estimates) Talk 5: Finit Bid Sot Detign Package (Plans, Specifcotions ood Cout Estimates) $11,334 $200 $11.534
Task 5,1 Final Bid Set Design Package 22
22 $11,334 $200 511,534
Sublotal Task 5, Final Bid Set Design Package (Plans, Specifications and Cost Estimates)

16. Regulatory Agencies, E
$2,316 $2,316
Task 6.1 CEOA and NPDES Construction Permit
$8,4S2 $8.452
Task 6.2 Moethty/Quarterty Update to DOW at SWACB
$1,293 $1,293
Task 6.3 Department of Tore Substance Conrol
$1293 $1,293
Task 6.4 Impertal County Alr Potution Control District
$1,566 $100 $1,666
Task 6.5 Cey of Celexico Develepment Services Department $2,380 $100 $2.486
Task 6.6 City of Calexico Fire Department
22 55 $17,306 $200 $17,506
Subtotal Task 6, Regulatory Agencies, Environmentel and Permitting sik 7i Public Meetings, Outreach, ander Preseritations 10 City Coincl 26 $4,689 $25 $4.7H
Task 75 Preparation of Agendas, Minutes, Agenda Salt Reports 10 25 $4,980 325 $5.005
Task 7.2 Meetinos (5 Meesnos, Assume Remote Virtual Meetings) 26 $9,669 350 $9.719
Subtotel Task 7, Public Meetings, Outreach, andior Presentations to Cly Cound nal Field Suney
25 $5,590 $400 $5,990
Task 8.1 Field Survey and Investigation
25 $5,590 $400 $5,990
Subtotal Task 8, Additional Field Survey
Tack delicoing Support and Constuntion Poose Sensices
24 24 56 $9.768 $50 $9,818
Task 9.1 Addendurs for Design Related Issues
16 2 34 $7,308 3100 $7,708
Task 9.2 Attend Pre Bld & Pre Constructon Meeting and Prepete Agenda 4. Minutes 77: 20 10 10 65 $12,348 $25 $12,373
TAsk 9.3 RFI Responses (15 RiO 3 hourleach plus CADD & Clerica) 8 Tosk 9.4 Submiltsl Review(25 submitals e 3 hrs/eech for fest review; and 10 submittals 02 he/ 25 15 10 $20,807 325 $20,832 12 18 40
each for second review plus Clericati
3 33 $6,230 $25 36.255
Task 9.5 Assist Change Orders (5 COs a 5 hours/esch plus CADD & Clerka) 15 24 44 $7,316 $50 $7,366
Task 9.6 As Bull Record Drawings
40 25 131 48 30 342 $63,777 $575 364,352
Subtotal Task 9, Didding Support and Construction Phase Services 53 Lik 1D: WIP enit EWR Opention Manast Plan Updete
24 3G $6.466 325 $6,511
Task 10.1 Update WTP and EVER Operetion Menoal Plan
24 36 $5,40G $25 16,511
Subtotal Task 10, WTP and EWR Operation Manual Plan Update 91 457 72 115 190 153 1454 5280,464 32,350 5292814
SUBTOTAL TASK THROUGH TASK 10 208 96
96 520000 3250 $28232
TOLE TOT 10 EXCEE 201
LEE+RO

WATER IHESASTRUCTURE ENGINEERS
Page?
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
Exhibit 2: Billing Rate Schedule
(Effective From November 1, 2023 to October 31, 2024)

BILLING RATES
PERSONNEL CLASSIFICATION ($/HOUR)

ENGINEERS
Engineer 9 E9 Chief Engineer $339
Engineer 8 Managing Engineer $305
Engineer 7 E7 Supervising Engineer
Engineer 6 E6 Principal Engineer
Engineer 5 Senior Engineer
Engineer 4 E4 Engineer
Engineer 3 E3 Associate Engineer
Engineer 2 E2 Assistant Engineer
Engineer 1 E1 Junior Engineer

CAD / DESIGNERS
Designer 6 Principal Designer $226
Designer 5 Senior Designer
Designer 4 T4 Designer
Designer 3 T3 Associate Designer
Designer 2 T2 Assistant Designer
Designer 1 T1 Junior Designer $100

FIELD PROFESSIONALS
Field Professional 5 F5 Senior Resident Engineer $205
Field Professional 4 F4 Resident Engineer
Field Professional 3 F3 Senior Inspector
Field Professional 2 F2 Inspector
Field Professional 1 F1 Assistant Inspector $105

ADMINISTRATIVE
Administrative 4 A4 Senior Contract Manager $147
Administrative 3 A3 Contract Manager $138
Administrative 2 A2 Senior Word Processor $110
Administrative 1 A1 Word Processor / Admin. Assistant $91 LEE+RO

WATER INFRASTRUCTURE ENGINEERS

City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
Exhibit 3: Other Direct Costs
(Effective From November 1, 2023 to October 31, 2024)
Automobile Mileage IRS Published Rate
$0.08 / sheet (8.5 x 11 Bond B & W
$0.20 / sheet (8.5 x 11 Bond Color)
In-house Reproduction $0.15 / sheet (11 x 17 Bond B&W)
$0.50 / sheet (11 x 17 Color)
$1.25/ sheet (24 x 36 Bond)
Mylar Original Drawing $8.00 / sheet (24 x 36 or 22 x 34) Computers & Work Stations No Charge
Subconsultant Mark-up Subconsultant Invoice Amount Plus 5% Bulk Reproduction by Outside Printing Firm Invoice amount plus 10% Handling Charge Overnight Mailing, Air Fare. Project-Specific Software, Equipment Rental, etc. At Cost LEE+RO

WATER INFRASTRUCTURE ENGINEERS

EXHIBIT C

CERTIFICATE OF EXEMPTION FROM WORKERS' COMPENSATION INSURANCE I hereby certify that in the performance of the work for which this Agreement is entered into, I shall not employ any person in any manner so as to become subject to the Workers' Compensation Laws of the State of California.

Executed on this day of _ 2024, at
California.

Consultant
11 ATTACHMENT NO. 2

CITY OF CALEXICO

CALEXICO

CALIFORNIA
Vero Calloria Qual Mariso Must
Request for Proposals
for
Engineering Design Services for Chlorine
Conversion Project - Gaseous Chlorine
Feed System to Liquid Hypochlorite Feed
System
Public Works Department
549 Pierce Avenue
Calexico, CA 92231
760/768-2160
www.calexico.ca.gov
March 28, 2024

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE
I Introduction and Background
Project Posting and Scheduling
III Scope of Work
IV Notification of Consultant Registration
Requirements (Where Required)
V Submittal Requirements
VI Selection Process
VII Tentative Schedule 00 00 00 00 ur
VIII Inquiries
IX Submittal Deadline

EXHIBITS
A - Sample Proposal Evaluation Form
B - Sample Consultant Agreement and Insurance Requirements 2 I. INTRODUCTION AND BACKGROUND
The City of Calexico ("City") is requesting proposals from qualified engineering professionals to provide engineering design services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System. The City proposes to convert from a gaseous chorine system to a 12.5% bulk sodium hypochlorite disinfection system.

The City owns and operates a Water Treatment Plant ("WTP") and Eastside Water Reservoir ("EWR"). The WTP receives its water supply from the Colorado River through the Imperial Irrigation District's ('IID") canal. The City's WTP has a design capacity of 14 Million Gallon per Day ("MGD"'), with an average daily demand of 9 MGD and current peak flow of 7-8 MGD. The EWR has a design capacity of 6 MGD, with an average daily demand of 1.25 MGD. Both the WTP and EWR currently operate on gaseous chlorine water disinfection system to disinfect the water prior to discharging it into the City's supply lines. The City has concerns regarding the usage of chlorine gas as a disinfectant, as chlorine gas is toxic and poses dangers to the public and operations staff. The WTP is located adjacent to residential and commercial areas, schools and the Calexico International Border and the EWR is located adjacent to residential arca. Both facilities pose a significant high risk of chlorine gas exposure to the public.

The contract will be regulated according to the provisions of all federal, state and local laws and ordinances that are applicable. This includes compliance with prevailing wage rates and their payment in accordance with California Labor Code, Section 1774. All Service Providers and sub- consultants) shall pay all workers not less than the general prevailing rate of per diem wages and the general prevailing rate for holiday and overtime work as determined by the Director of the Department of Industrial Relations, State of California, for the type of work performed and the locality in which the work is to be performed, pursuant to sections 1770 et seq. of the California Labor Code. Prevailing wage rates are available on the Internet at: http://www.dir.ca.gov. All Service Providers and sub-consultants) shall comply with the registration and qualification requirements pursuant to sections 1725.5 and 1771.1 of the California Labor Code.

II. PROJECT POSTING AND SCHEDULING
This RFP is being distributed over the internet and is posted at the City's website at the following address: https://www.calexico.ca.gov/bidsandrfps. Consultants wishing to propose in response to this RFP must obtain this document from our website. Due to the fact that anyone can download the RFP and the City has no method for tracking the distribution, the City is not able to maintain a list of potential consultants and/or proposers and cannot provide individual notification of amendments or addendums to this RFP.

The City will therefore post any addendums to the RFP on the above mentioned website. All consultants shall refer to the website to verify all addendums that have been issued and that they have acknowledged all such addendums in their proposal. 3 HI. SCOPE OF WORK
The scope of work includes but is not limited to:

Task No. 1 - Project Management, QA/QC, and Accounting
Task No. 2 - Project Setup, Site Visit and Preliminary Design Meeting Task No. 3 - Draft Feasibility/ Preliminary Design Report and Final Feasibility Study/Preliminary Design Report for Water Treatment Plant and Eastside Water Reservoir Task No. 4 - Plans, Specifications and Estimate for Water Treatment Plant and Eastside Water Reservoir
a. 50% design submittal
b. 90% design submittal
c. 100% design submittal
Task No. 5 - Final Plans, Specifications and Estimate for Water Treatment Plant and Eastside Water Reservoir
Task No, 6 - Regulatory Agencies, Environmental and Permitting a. CEQA, NPEDES Construction Permit
b. State Water Resources Control Board, Division of Drinking Water a. Monthly/Quarterly updates
c. Department of Toxic Substance Control
d. Imperial County Air Pollution Control District
e. City of Calexico Development Services Department
f. City of Calexico Fire Department
g. Other
Task No. 7 - Public Meetings, Outreach, and/or Presentations to City Council a. Preparation of agendas, minutes, agenda staff reports, etc. b. Approximately five (5) meetings
Task No. 8 - Additional Field Survey
Task No. 9 - Bidding Support and Construction Phase Services a. Addendum for design related issues
b. Pre-bid meeting agenda and minutes
c. RFI responses and submittal review comments
d. Assist in change orders during construction
As-built record drawings
Task No. 10 - City of Calexico Water Treatment Plant and Eastside Water Reservoir Operation Manual Plan Update
IV. NOTIFICATION OF CONSULTANT REGISTRATION REQUIREMENTS (WHERE REQUIRED)
Pursuant to the requirements of California Labor Code section 1771.1, all consultants and sub- consultants that wish to engage in public work through a public works contract must be registered with the Department of Industrial Relations (DIR).
4 Beginning March 1, 2015, no consultant or sub-consultant may be listed on a bid proposal for a public works project unless registered with DIR.

Beginning April 1, 2015, no consultant or sub-consultant may be awarded a contract for public work on a public works project unless registered with the DIR, pursuant to Labor Code section 1725.5
All consultants, including sub-consultants listed in the proposal must be registered with the DIR at the time proposals are due, and must submit proof of registration with the proposal. Any proposals received listing unregistered consultants and/or sub-consultants will be deemed non- responsive.

NOTE: DIR number is to be specified on the cover page of the consultant proposal. Proof of registration for consultant and sub-consultant shall also be submitted as an exhibit of the proposal.

Application and renewal are completed online with a non-refundable fee of $400. Read the Public Works Reforms (SB 854) Fact Sheet for requirements. Instructions for completing the form and additional information can be found on the DIR website.

This Project is subject to compliance monitoring and enforcement by the Department of Industrial Relations.

SOURCES OF INFORMATION

INFORMATION WEBSITE
Department of Industrial Relations (Public http://www.dir.ca.gov/Public- Works) Works/PublicWorks.html
SB 854 Fact Sheet https://www.dir.ca.gov/Public-
Works/PublicWorksSB854.html
Senate Bill 854 Compliance http://www.dir.ca.gov/Public- Works/SB854.html
Public Works Contractor (PWC) Registration https://www.dir.ca.gov/Public- Works/Contractor-Registration.html
Classifications and Minimum Labor Rates http://www.dir.ca.gov/OPRL/Pwd/

SUBMITTAL REQUIREMENTS
Proposal should be typed, organized and concise, yet comprehensive.

General Requirements
Provide a cover letter.
5 2. State the interpretation of the work to be performed. State a positive commitment to perform the work in the required manner and time frame; include a basic summary; and demonstrate an understanding of the project. Provide a statement that the offer is valid for at least a ninety (90) day period.

3. Provide the name(s) of the primary and/or alternate individuals authorized to respond to this RFP. Include titles, addresses, e-mail, and phone numbers.

The Consultant is representing itself as a qualified professional in engineering design services. Therefore, it is acceptable to submit recommendations and comments for consideration on format, process, schedule, and additional content of projects. The City will consider comments and recommendations; however is not required to select any of the recommendations or comments.

Expensive bindings, colored displays, promotional materials, etc., are neither necessary nor desired. Emphasis should be concentrated on conformance to the RFP instructions, responsiveness to the RFP requirements, and on completeness and clarity of content.

6. If any subcontractors are utilized, the lead Consultant must submit a description of the firm, the portion of work to be done, and cost of each subcontractor. All subcontracts exceeding $25,000 in cost shall contain all required provisions of the prime contract.

7. Proof of registration for consultant and sub-consultant shall also be submitted as an exhibit of the proposal.

Table of Contents
Include a table of contents with identification of cach section and page number.

Summary of Qualifications and Experience
State whether the firm is local, regional, national or international.

2. Identify the owners) of the firm and legal status (sole proprietor, corporation, etc.)

3. Give the location of the office from which work is anticipated to be done and the number of employees of the company.

Identify the qualifications and resumes of all individuals who will be associated with this service. Include professional registrations and affiliations.

Summarize specific experiences and qualification for similar and related projects, both federally funded and locally funded. Describe the services previously performed such as studies, reports, etc. List at least three (3) references with telephone numbers and email contact addresses (if available).
6 Analysis of Effort/Methodology

1. Describe the approach for how the work will be performed. The proposal shall indicate any specific techniques or methodology to be utilized.

The proposal shall include a sample project timeline with specific tasks envisioned for this project, including staffing.

Indicate what participation, data and products will be requested from the City.

4. Indicate deliverables to be provided and when.

Cost and Fees
Cost Proposals must be submitted with the proposal in a separate sealed and clearly marked envelope (include project title and submitting firm). Cost proposals shall take into account the following:

Develop costs and fees for the services requested. Submit a not to exceed fee proposal based on anticipated fully burdened hourly rates.

When preparing cost and fees consider the scope of work involving project kick off and review of available documentation, material submittals, project documentation and prepare a lump sum fixed fee breakdown based on anticipated staff and hours. Costs should be organized for full time hourly rates. Such hourly rates should be fully burdened or loaded, including full compensation for all overhead and profit. Billing rates shall include provision for normal office costs, including but not limited to office rental, utilities, insurance, cell phone or radio, equipment, normal supplies and materials, in-house reproduction services, and local travel costs. As much as possible, a fixed fee lump sum breakdown by phase of the construction based on billable hours is desirable for preconstruction and post construction.

Breakdown shall include preconstruction services and construction services (Request for information/clarification). No subcontractors shall be utilized without prior authorization by the City and modification to submitted DBE subcontractor's list or goal is discouraged and may lead to project funding issues.

Insurance Requirements
Prior to execution of the agreement with the City, the successful firm must provide evidence of insurance coverages as noted in the sample contract and insurance requirements exhibit.

The successful firm will be required to maintain the required coverages, at its sole cost and expense, throughout the entire term and any subsequent modification terms of the contract. 7 Insurance requirements noted in sample contract. Insurance requirements may be adjusted once the final cost and fees proposal is reviewed.

VI. SELECTION PROCESS
The City of Calexico will utilize a one-step selection process. The City reserves the right to include an oral interview process component. If an oral interview is considered, selected firms will be notitied
Proposals will be reviewed by an evaluation committee. The evaluation committee's assessment and recommendations shall be forwarded to the City Managers for review. The City Manager shall provide a report of the committee's evaluation and recommendations, along with his recommendation, for the selection of a firm to the City Council for final review and approval to enter into negotiations for an agreement.

Additionally, the City reserves the right to reject any and all proposals submitted and/or request additional information for clarification.

VII. TENTATIVE SCHEDULE
Request for Proposal Issued March 28, 2024
Consultant Proposals Due April 18, 2024 at 2:00p.m.

Consultant Selection and Negotiations Week of April 29, 2024 City Council Approval of Contract May 15, 2024 at 6:30p.m.

Project Completion TBD
VIII. INQUIRIES
Pre-submittal procedural or technical inquires may be directed to Lilliana Falomir, Public Works Manager via email at falomirl@,calexico.ca.gov.

IX. SUBMITTAL DEADLINE
Consultant must submit five (5) copies of their proposal with original Consultant signature. The proposal must be formatted in accordance with the instructions of this RFP. Promotional material may be attached, but are not necessary and will not be considered as meeting any of the requirements of this RFP. Proposals must be enclosed in a sealed envelope or package, clearly marked "RFP for Engineering Design Services for Chlorine Conversion Project" and delivered on or before 2:00p.m. on Thursday, April 18, 2024 to:

Office of the City Clerk
City Hall
City of Calexico
608 Heber Avenue
Calexico, CA 92231
8 Late, emailed or facsimile proposals will not be accepted. It is the proposer's responsibility to assure that its proposal is delivered and received at the location specified herein, on or before the date and hour set. Proposals received after the date and time specified will not be considered.

EXHIBIT A

SAMPLE OF PROPOSAL EVALUATION FORM
Firm:

Evaluator:

Date:

Technical Approach (35 Points) Points Awarded
Responsiveness & understanding of work to be done, (i.e. scope of work). Specific experience with similar
engineering design for chlorine conversion projects
2 Project Management (30 Points) Points Awarded
Capacity to perform the scope of work and the ability to conclude in a timely manner. Quality of staff based on
recent experience
3 Reference (5 Points) Points Awarded
Familiarity and/or specific experience with local, state Points Awarded and federal project procedures, environmental and
4 permitting (25 Points)
Overall quality of proposal, including qualifications and Points Awarded 5 thoroughness (5 Points)
Total Score
Comments:
11 EXHIBIT B
12 AGREEMENT FOR PROFESSIONAL SERVICES
This Agreement is made and entered into as of the day of - 2024, by and between the City of Calexico ("City") and ("'Consultant"').

RECITALS
A. Consultant is specially trained, experienced and competent to perform the special services which will be required by this Agreement; and
B. Consultant possesses the skill, experience, ability, background, certification and knowledge to provide the services described in this Agreement on the terms and conditions described herein.

AGREEMENT

1. Scope of Services. The Consultant shall furnish the following services in a professional manner. Consultant shall perform the services described on Exhibit A which is attached hereto and incorporated herein by reference. Consultant shall provide said services at the time, place, and in the manner specified in Exhibit A, subject to the direction of the City through its staff that it may provide from time to time.

2. Time of Performance. The services of Consultant are to commence upon execution of this Agreement and shall continue until all authorized work is approved by the City. All such work shall be completed no later than June 31, 2025. Time is of the essence for every provision of this agreement that states a time for performance and for every deadline imposed by the City.

3. Compensation. Compensation to be paid to Consultant shall be as set forth in Exhibit B, which is attached hereto and incorporated herein by reference. Payment by City under this Agreement shall not be deemed a waiver of defects, even if such defects were known to the City at the time of payment.

Method of Payment. Consultant shall submit monthly billings to City describing the work performed during the preceding month. Consultant's bills shall include a brief description of the services performed, the date the services were performed, the number of hours spent and by whom, and a description of any reimbursable expenditures. City shall pay Consultant no later than 30 days after approval of the monthly invoice by City staff.

Ownership of Documents. All plans, studies, documents and other writings prepared by and for Consultant, its officers, employees and agents and subcontractors in the course of implementing this Agreement, except working notes and internal documents, shall become the property of the City upon payment to Consultant for such work, and the City shall have the sole right to use such materials in its discretion without further 13 compensation to Consultant or to any other party. Consultant shall, at Consultant's expense, provide such reports, plans, studies, documents and other writings to City upon written request.
6 Independent Contractor. It is understood that Consultant, in the performance of the work and services agreed to be performed, shall act as and be an independent contractor and shall not act as an agent or employee of the City. Consultant shall obtain no rights to retirement benefits or other benefits which accrue to City's employees, and Consultant hereby expressly waives any claim it may have to any such rights.

Interest of Consultant. Consultant (including principals, associates and professional employees) covenants and represents that it does not now have any investment or interest in real property and shall not acquire any interest, direct or indirect, in the area covered by and during this Agreement or any other source of income, interest in real property or investment which would be affected in any manner or degree by the performance of Consultant's services hereunder. Consultant further covenants and represents that in the performance of its duties hereunder no person having any such interest shall perform any services under this Agreement.

Consultant is not a designated employee within the meaning of the Political Reform Act because Consultant:
a. will conduct research and arrive at conclusions with respect to his/her rendition of information, advice, recommendation or counsel independent of the control and direction of the City or of any City official, other than normal agreement monitoring; and
b. possesses no authority with respect to any City decision beyond rendition of information, advice, recommendation or counsel. (FPPC Reg. 18700(a)(2).) Professional Ability of Consultant. City has relied upon the professional training and ability of Consultant to perform the services hereunder as a material inducement to enter into this Agreement. Consultant shall therefore provide properly skilled professional and technical personnel to perform all services under this Agreement. All work performed by Consultant under this Agreement shall be in accordance with applicable legal requirements and shall meet the standard of quality ordinarily to be expected of competent professionals in Consultant's field of expertise.

9. Indemnity. Consultant agrees to indemnify, including the cost to defend, the City, and its officers, agents and employees from any and all claims, demands, costs or liability that arise out of, or pertain to, or relate to the negligence, recklessness, or willful misconduct of Consultant and its agents in the performance of services under this contract. This indemnity does not apply to liability for damages for death or bodily injury to persons, injury to property, or other loss, damage or expense arising from the sole negligence, 14 willful misconduct or defects in design by the City or its agents, servants, or independent contractors who are directly responsible to the City, or the active negligence of the City.

To the fullest extent permitted by law, the Consultant shall (1) immediately defend and (2) indemnify the City, and its councilmembers, officers, agents, and employees from and against all liabilities regardless of nature or type that arise out of, pertain to, or relate to the negligence, recklessness, or willful misconduct of the Consultant, or its employees, agents, or subcontractors. Liabilities subject to the duties to defend and indemnify include, without limitation, all claims, losses, damages, penalties, fines, and judgments; associated investigation and administrative expenses; defense costs, including but not limited to reasonable attorneys' fees; court costs; and costs of alternative dispute resolution. The Consultant's obligation to indemnify applies unless it is finally adjudicated that the liability was caused by the sole active negligence or sole willful misconduct of an indemnified party. If it is finally adjudicated that liability is caused by the comparative active negligence or willful misconduct of an indemnified party, then Consultant's indemnification obligation shall be reduced in proportion to the established comparative liability.
(b) The duty to defend is a separate and distinct obligation from Consultant's duty to indemnify. Consultant shall be obligated to defend, in all legal, equitable, administrative, or special proceedings, with counsel approved by the City, the City and its councilmembers, officers, agents, and employees, immediately upon tender to Consultant of the claim in any form or at any stage of an action or proceeding, whether or not liability is established. An allegation or determination that persons other than Consultant are responsible for the claim does not relieve Consultant from its separate and distinct obligation to defend under this section. The obligation to defend extends through final judgment, including exhaustion of any appeals. The defense obligation includes an obligation to provide independent defense counsel if Consultant asserts that liability is caused in whole or in part by the negligence or willful misconduct of the indemnified , party. If it is finally adjudicated that liability was caused by the comparative active negligence or willful misconduct of an indemnified party, Consultant may submit a claim to the City for reimbursement of reasonable attorneys' fees and defense costs in proportion to the established comparative liability of the indemnified party. (c) The review, acceptance or approval of the City's work or work product by any indemnified party shall not affect, relieve or reduce the City's indemnification or defense obligations. This Section survives completion of the services or the termination of this contract. The provisions of this Section are not limited by and do not affect the provisions of this contract relating to insurance.

10. Insurance Requirements.
a. Consultant, at Consultant's own cost and expense, shall procure and maintain, for the duration of the contract, the following insurance policies. 15 i. Workers' Compensation Coverage. Consultant shall maintain Workers' Compensation Insurance and Employer's Liability Insurance for his/her employees in accordance with the laws of the State of California. In addition, Consultant shall require each subcontractor to similarly maintain Workers' Compensation Insurance and Employer's Liability Insurance in accordance with the laws of the State of California for all of the subcontractor's employees. Any notice of cancellation or non-renewal of all Workers' Compensation policies must be received by the City at least thirty (30) days prior to such change. The insurer shall agree to waive all rights of subrogation against City, its officers, agents, employees and volunteers for losses arising from work performed by Consultant for City. This provision shall not apply if Consultant has no employees performing work under this Agreement. If the Consultant has no employees for the purposes of this Agreement, Consultant shall sign the "Certificate of Exemption from Workers' Compensation Insurance" which is attached hereto as Exhibit C.
i. General Liability Coverage. Consultant shall maintain commercial general liability insurance in an amount not less than one million dollars ($1,000,000) per occurrence for bodily injury, personal injury and property damage. If a commercial general liability insurance form or other form with a general aggregate limit is used, either the general aggregate limit shall apply separately to the work to be performed under this Agreement or the general aggregate limit shall be at least twice the required occurrence limit.
iii. Automobile Liability Coverage. Consultant shall maintain automobile liability insurance covering bodily injury and property damage for all activities of the Consultant arising out of or in connection with the work to be performed under this Agreement, including coverage for owned, hired and non-owned vehicles, in an amount of not less than one million dollars ($1,000,000) combined single limit for each occurrence.
iv. Errors and Omissions Liability. Consultant shall maintain errors and omissions liability insurance for all work performed under this Agreement in an amount of not less than one million dollars ($1,000,000).

Policy Endorsements. Each general liability and automobile liability insurance policy shall be with insurers possessing a Best's rating of no less than A:VII and shall be endorsed with the following specific language:
i. The City of Calexico, its elected or appointed officers, officials, employees, agents and volunteers are to be covered as additional insureds with respect to liability arising out of work performed by or on behalf of the Consultant, including materials, parts or equipment furnished in connection with such work or operations.
16 ii. This policy shall be considered primary insurance as respects the City, its elected or appointed officers, officials, employees, agents and volunteers.

Any insurance maintained by the City, including any self-insured retention the City may have, shall be considered excess insurance only and shall not contribute with it.
iii. This insurance shall act for each insured and additional insured as though a separate policy had been written for each, except with respect to the limits of liability of the insuring company.
iv. Any failure to comply with reporting provisions of the policies shall not affect coverage provided to the City, its elected or appointed officers, officials, employees, agents or volunteers.

V. The insurance provided by this policy shall not be suspended, voided, canceled, or reduced in coverage or in limits except after thirty (30) days written notice has been received by the City.
c. Deductibles and Self-Insured Retentions. Any deductibles or self-insured retentions must be declared to and approved by the City. At the City's option, Consultant shall demonstrate financial capability for payment of such deductibles or self-insured retentions.
d. Certificates of Insurance and Endorsements. Consultant shall provide certificates of insurance with original endorsements to City as evidence of the insurance coverage required herein. Certificates of such insurance shall be filed with the City on or before commencement of performance of this Agreement. Current certification of insurance shall be kept on file with the City at all times during the term of this Agreement.

11. Compliance with Laws. Consultant shall use the standard of care in its profession to comply with all applicable federal, state and local laws, codes, ordinances and regulations.

12. Licenses. Consultant represents and warrants to City that it has all licenses, permits, qualifications, insurance and approvals of whatsoever nature which are legally required of Consultant to practice its profession. Consultant represents and warrants to City that Consultant shall, at its sole cost and expense, keep in effect or obtain at all times during the term of this Agreement, any licenses, permits, insurance and approvals which are legally required of Consultant to practice its profession. Consultant shall obtain a City of Calexico Business License.

13. Controlling Law Venue. This Agreement and all matters relating to it shall be governed by the laws of the State of California and any action brought relating to this Agreement shall be held exclusively in a state court in the County of Imperial, California. 17 14. Written Notification. Any notice, demand, request, consent, approval or communication that either party desires or is required to give to the other party shall be in writing and either served personally or sent prepaid, first class mail. Any such notice, demand, etc. shall be addressed to the other party at the address set forth herein below. Either party may change its address by notifying the other party of the change of address. Notice shall be deemed communicated within 48 hours from the time of mailing if mailed as provided in this section.

If to City: City of Calexico, City Manager
608 Heber Ave.

Calexico, CA 92231
If to Consultant:

15. Consultant's Books and Records.
a. Consultant shall maintain any and all ledgers, books of account, invoices, vouchers, canceled checks, and other records or documents evidencing or relating to charges for services, or expenditures and disbursements charged to City for a minimum period of three (3) years, or for any longer period required by law, from the date of final payment to Consultant to this Agreement. b. Consultant shall maintain all documents and records which demonstrate performance under this Agreement for a minimum period of three (3) years, or for any longer period required by law, from the date of termination or completion of this Agreement.
c. Any records or documents required to be maintained pursuant to this Agreement shall be made available for inspection or audit, at any time during regular business hours, upon written request by the City Manager, City Attorney, City Auditor or a designated representative of these officers. Copies of such documents shall be provided to the City for inspection at City Hall when it is practical to do so.

Otherwise, unless an alternative is mutually agreed upon, the records shall be available at Consultant's address indicated for receipt of notices in this Agreement.
d. Where City has reason to believe that such records or documents may be lost or discarded due to dissolution, disbandment or termination of Consultant's business, City may, by written request by any of the above named officers, require that custody of the records be given to the City and that the records and documents be maintained in City Hall. Access to such records and documents shall be granted 18 to any party authorized by Consultant, Consultant's representatives, or Consultant's successor-in-interest.

16. Entire Agreement. This Agreement constitutes the complete and exclusive statement of Agreement between the City and Consultant. All prior written and oral communications, including correspondence, drafts, memoranda, and representations, are superseded in total by this Agreement.

17. Amendments. This Agreement may be modified or amended only by a written document executed by both Consultant and City and approved as to form by the City Attorney.

18. Waiver. No failure on the part of either party to exercise any right or remedy hereunder shall operate as a waiver of any other right or remedy that party may have hereunder.

19. Execution. This Agreement may be executed in several counterparts, each of which shall constitute one and the same instrument and shall become binding upon the parties when at least one copy hereof shall have been signed by both parties hereto. In approving this Agreement, it shall not be necessary to produce or account for more than one such counterpart.

20. Assignment and Subcontracting. The parties recognize that a substantial inducement to City for entering into this Agreement is the professional reputation, experience and competence of Consultant. Assignments of any or all rights, duties or obligations of the Consultant under this Agreement will be permitted only with the express consent of the City. Consultant shall not subcontract any portion of the work to be performed under this Agreement without the written authorization of the City. If City consents to such subcontract, Consultant shall be fully responsible to City for all acts or omissions of the subcontractor. Nothing in this Agreement shall create any contractual relationship between City and subcontractor nor shall it create any obligation on the part of the City to pay or to see to the payment of any monies due to any such subcontractor other than as otherwise is required by law.

21. Termination. This Agreement may be terminated by the City immediately for cause or by either party without cause upon fifteen days' written notice of termination. Upor termination, Consultant shall be entitled to compensation for services performed up to the effective date of termination.
***SIGNATURES ON FOLLOWING PAGE***
19 IN WITNESS WHEREOF, the parties have caused this Agreement to be executed on the date first written above.

CITY OF CALEXICO: CONSULTANT:

Esperanza Colio Warren
City Manager
APPROVED AS TO FORM: ATTEST:

Carlos Campos Veronica L. Alvarado
City Attorney City Clerk
20 EXHIBIT A

SCOPE OF SERVICES
(proposal dated
21 EXHIBIT B

SCHEDULE OF CHARGES
22 EXHIBIT C

CERTIFICATE OF EXEMPTION FROM WORKERS' COMPENSATION INSURANCE I hereby certify that in the performance of the work for which this Agreement is entered into, I shall not employ any person in any manner so as to become subject to the Workers' Compensation Laws of the State of California.

Executed on this day of , 2024, at
California.

Consultant
23 ATTACHMENT NO. 3
6050 PEACHTREE PKWY, SUITE 240-187
PureAIR ATLANTA, GA 30092
Ph: 678-935-1431 | Fax: 678-935-0648
FILTRATION www.pureairfiltration.com | [email protected] Date: October 20, 2023
City of Calexico
Water Treatment Plant
545 Pierce Avenue
Calexico, CA 92231 '
(760) 768-2162
To whom it may concern:

PureAir Filtration has alerted the City of Calexico that their emergency chlorine system is out of date and not compliant. The system is at full risk if there is a chlorine leak to not have the necessary coverage or safety precautions. This system has been out of date for a minimum of 2 years. The City of Calexico has been provided with lab results verifying that the system is out of compliance and additional quotes for replacement. PureAir Filtration cannot be held liable in the event of a chlorine gas leak. The release of chlorine gas can pose a risk to employees, the community, and/or the surrounding environment. Pure Air Filtration has fully passed on the potential liability and responsibility onto the City of Calexico, which includes the City of Calexico Water Treatment Plant.

Regards,
Kevin Jameson
CEO & Founder
Pure Air Filtration
T: 678-935-1431 E: [email protected]
ATTACHMENT NO. 4
RuIz & ASSOCIATES
"Helping businesspeople, one client at a time."
May 15, 2024
Mr. Jose Saldana
City of Calexico Water Treatment Plant
640 Pierce Avenue
Calexico, CA 92231
RE: Conversion from Chlorine Gas to Liquid Chlorine
Dear Mr. Saldana:

As your Safety Consultant, I would like to thank you for inviting me to present this letter in support of the City of Calexico's intention to convert its current method of operation from a gaseous chlorine water disinfection system to a system that will use liquid chlorine instead. From a safety standpoint this is the best decision the City of Calexico could take considering the danger your current operation places over the surround community, businesses and our neighbor, the City of Mexicali.

As you know, chlorine gas was first used by French chemist Claude Berthollet to bleach textiles in 1785. Later on, it was pioneered by a German scientist later to be a Nobel laureate, Fritz Haber of the Kaiser Wilhelm Institute in Berlin, in collaboration with the German chemical conglomerate IG Farben, which developed methods for discharging chlorine gas against an entrenched enemy; yes, it was used rather effectively as an instrument of war because of the excellent tissue damage and kill rate that it produced in WWI. As history now shows, NONE of the First World War's combatants were prepared for the introduction of poison gas (chlorine gas) as a weapon. Yes, chlorine gas is extremely dangerous to human life and health.

Chlorine is a powerful irritant that can inflict damage to the eyes, nose, throat, and lungs. At high concentrations, such as the one you are currently using chlorine gas 100%, and prolonged exposure, it can cause death by asphyxiation. German chemical companies BASF, Hoeschst and Bayer (which formed the IG Farben conglomerate in 1925) made chlorine gas in cooperation with Fritz Haber and found a way to develop methods of discharging chlorine gas against enemy trenches.

Having said this, public safety is probably the primary reason for changing from chloring gas at 100% potency to the 12.5% potency of the liquid chlorine (sodium hypochlorite) disinfection system you propose to install. Another reason is that the equipment you are currently using is old and deteriorating rapidly. As is true with most cities that are still using this outdated system of disinfection, finding parts for the equipment currently in use is getting harder and harder to find. Often times, some Cities have to settle for spare parts that have been refurbished and may/may not be up to industry standards. Invariably, this opens the potential for equipment failure and potentially dangerous discharge. This is much like playing Russian Roulet with your employees and the surrounding community's safety. You currently have approximately ten, 1-ton cylinders of chlorine gas. You might be using four of these at any given time and have about two, 1-ton full cylinders as back up and about two, 1-ton cylinders that are empty. That is a lot of chlorine gas.

If you are having second thoughts about the conversion, simply answer the following questions.

1. Are you prepared for a catastrophic chlorine gas spill?

2. Does the City of Calexico have the technical and human resources to evacuate residents within a 3-mile radius from your plant?

3. Can the emergency evacuation take place within minutes of the spill?

4. If not, how will you handle the 9-1-1 calls for help against chlorine gas exposure?

5. Does the City of Calexico have the financial resources to handle liability claims that may arise after a spill?

6. Does the City of Calexico have the financial resources for the clean-up that has to take place after a spill?

7. How would the City of Calexico handle the release of 4 to 6 tons of chlorine gas towards our neighboring city, Mexicali?
RuIZ & ASSOCIATES
"Helping businesspeople, one client at a time."
Side-by-Side Comparison of Chlorine Gas y Sodium Hypochlorite 12.5% CHLORINE GAS SODIUM HYPCHLORITE 12.5%
Signal Word: DANGER Pictogram Signal Word: DANGER Pictogram Pictograms Category Pictograms Category

1. Oxidizer 1 1. Oxidizer N/A

2. Acute Toxicity 1 2. Acute Toxicity N/A

3. Corrosion 1 3. Corrosion 1

4. Exclamation

4. Exclamation Mark 1 Mark N/A

5. Environment 1 5. Environment N/A
Toxicological Information Toxicological Information
Inhalation Fatal if inhaled Inhalation N/A
Skin Contact Fatal in contact with skin Skin Contact Immediately flush Causes severe skin burns with water
Eye Contact Causes serious eye damage Eye Contact Immediately flush with water
Ingestion Causes digestive tract burns Ingestion Take victim immediately to
hospital
As you can see, the information in each corresponding Safety Data Sheet clearly shows that Chlorine Gas is by far more dangerous than Sodium Hypochlorite 12.5%. Therefore, it makes a lot of sense that you are wanting to change from the gas ased disinfectant method to using the Sodium Hypochlorite 12.5% method. We commend you for wanting to make thi rogressive move as all Imperial Valley cities who have a water treatment plant have already made the conversion. The Cit It has been a pleasure writing this correspondence in support of a conversion. If I may answer any questions you may have, please feel free to call me at your convenience. Until then, I remain Respectfully yours,

7. Raig
Fernando Ruiz, President/CEO
afety Consultant for City of Calexic
'ernando Ruiz, Inc
Ruiz & Associates