AGENDA
ITEM
19 AGENDA
CALEXICO California ITEM
WHERE CALITORNIA AND MEXICO MEET
19 CITY COUNCIL
AGENDA STAFF REPORT
DATE: May 20, 2026
TO: Mayor and City Council
APPROVED BY: Benjamin A. Martinez, City Manager
REVIEWED BY: Karla Chaparro, Finance Director
PREPARED BY: Jesus Villegas Peimbert, Public Works Director/City Engineer Tvp SUBJECT: Authorize City Manager to Sign Agreement of Professional Services between the City of Calexico and LEE & RO, Inc. in the Amount of $318,223.00 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 City Manager to Sign Agreement of Professional Services between the City of Calexico and LEE & RO, Inc. in the Amount of $318,223.00 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 April 07, 2026, 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 ("IID") canal. The City's WTP has a design capacity of 14 Million Gallons per Day ('MGD"), with an average daily demand of 7-8 MGD and current peak flow of 9 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 rely on gaseous chlorine water disinfection, which cleans the water prior to the distribution throughout the supply system. Said chlorine gas, although effective, comes with its share of risks and hazards. Chlorine is described by the Clean Air Act as a hazardous air pollutant, which means that the storage and handling of the material is subject to very stringent measures to help prevent any leak that might endanger nearby population. In the case of the City of Calexico, the Water Treatment Plant is located adjacent to residential and commercial areas, schools, and the U.S.-Mexico International Border, whereas the Eastside sent to resent area, and Water Reservoir is located adjacent to residential areas, underscoring the importance of following the best safety standards and maintenance, to avoid any leaks that could harm our community.
Because this type of water disinfection system requires much more attention, effort and care to operate because of the dangers posed by the handling and storage of chlorine, many municipalities have opted to convert their Gaseous Chlorine Feed System to a Liquid Chlorine i come fed aston to target av (12.5% Bulk Sodium Hypochlorite) Feed System. This represents two main points; first, since less agencies require the maintenance for the gas chlorine system, it has become increasingly difficult to find replacement parts and companies to perform maintenance; and second, it has been proven that the conversion to the liquid chlorine has been successfully integrated into other cities, eliminating the health and safety hazards related to chlorine, while maintaining the expected quality of water delivered to their citizens.
One important factor in the determination to switch the disinfection process in the City's water treatment facilities is the environment and the potential to mitigate future leaks. The City of Calexico is located in a zone prone to high seismic activity. It is normal to experience earthquakes with varying ranges of intensity on a regular basis, which pose a risk for citizens due to the potential damage to structures, roads, electric grid, and water & wastewater systems.
Likewise, severe weather events such as tropical storms have recently hit the Imperial Valley, causing disruptions to all infrastructure. The impacts that these natural events have on our community could yield devastating consequences, if not for the readiness and quick action of our first responders (Public Works, Fire and Police Department).
The City's chlorine stockpile poses a great danger in case of an emergency event, since it is a highly corrosive gas that, once it leaks, cannot be contained easily. The current mechanisms that prevent the leak of chlorine from the Water Treatment Plant and Eastside Water Reservoir are insufficient in comparison to the amount we have, due to the age and capacity of the structures in charge of mitigation. The useful life of the infrastructure is fifteen (15) years and its current life is sixteen (16) years meaning that it is past its manufacturer's recommended life.
Regarding capacity, the Water Treatment Plant has ten (10) 2,000-lbs tanks in stock, with a capacity to contain only one (1) tank. The Eastside Water Reservoir has six (6) 150-lbs tanks in stock, with a capacity to contain only one (1) tank. As previously experienced during the 7.2 earthquake in 2010 and the Tropical Storm Mario of 2025, the City's first responders (Public Works, Fire and Police Departments) must attend their priorities to keep the population safe. In the case of Public Works, keeping the streets and sidewalks clear, ensuring the Water Treatment and Distribution is still ongoing, as well as the Wastewater Treatment and Collection, to prevent health hazards. With the looming presence of chlorine gas and the potential of leaks, adding another disaster that requires the attention of not only Public Works, but also Fire, Police and 2 County Hazmat operations, could result in devastating results to the population, as the emergency responders would be over strained. In such a situation, the only option would be to reallocate resources (staff, money) from their normal assigned duties to the new crisis, which would in turn leave more areas exposed to vulnerabilities.
The safety component is important in the context of the switch from chlorine gas to sodium hypochlorite. However, economic benefits also are taken into account for this decision. The following is a breakdown of the comparison between the two disinfecting options:
The Water Treatment Plant relies on heavy 2,000 Ibs. (pounds) tanks to supply the chlorine to the disinfection system. The Eastside Water Reservoir relies on 150 Ibs. (pounds) tanks to supply the chlorine to the disinfection system. They are bought in bundles of three (3) approximately six (6) times a year. With this information, the approximate yearly total spent on the current chlorine system, is broken down as follows:
- Number of 2,000 Ibs tanks bought in a year is 30 at $1.55 a pound = 2,000 Ibs x 30 tanks x $1.55 a pound = $93,000.00
- Number of 150 Ibs tanks bought in a year is 18 at $6.11 a pound = 150 Ibs x 18 tanks x $6.11 a pound = $16,497.00
- Total yearly dollar amount of chlorine gas = $93,000.00 + $16,497.00 = $109,497.00 However, several additional expenses shall be taken into consideration, including both the physical maintenance of the equipment, it also includes the permit procurement from the State of California, which is as follows:
- California Accidental Release Prevention (CalARP) Program = $18,000.00 every five (5) years, roughly $3,600.00 per year.
- Certified Unified Program Agency (CUPA) Annual Permit = $5,000.00 every (1) year.
The regular maintenance covers the following:
- Annual Chlorine System Maintenance at both the WTP and EWR = $50,000.00 per (1) year.
- Annual Quantitative Fit Testing = $1,800.00 per (1) year. - Replacement of Scrubbers at WTP and EWR = $152,000.00 every ten (10) years, roughly $15,200.00 per year.
- Due to the current configuration of the loading/unloading station for the chlorine gas tanks at the WTP, the process takes too much staff time (estimated):
• Three (3) laborers at $25.00 for 3 hours, 6 times a year = $1,350.00 • Two (2) operators at $39.00 for 3 hours, 6 times a year = $1,404.00 • Total staff time = $1,350.00 + $1,404.00 = $2,754.00
The total yearly cost including the permits and maintenance is:
$3,600.00 + $5,000.00 + $50,000.00 + $1,800.00 + $15,200.00 + $2,754.00 = $78,354.00 And adding both the cost of the chlorine gas and the cost of permits and maintenance is:
3 $109,497.00 + $78,354.00 = $187,851.00
The benefits of a Liquid Hypochlorite Feed System can't be overstated. Due to the fact that sodium hypochlorite is not listed by the U.S. Code of Regulations as a hazardous air pollutant, unlike chlorine, the Water Treatment Plant will be subject to less regulations and oversight, eliminating the necessity of keep training the staff, keeping records and attending inspections, on a regular basis, related to the storage and use of a hazardous air pollutant. Based on current trends from both our WTP and EWR, the amount of 12.5% bulk sodium hypochlorite (liquid chlorine) needed is of 52,250 gallons, at $2.7748 per gallon, gives an approximate yearly total of $144,983.30.
The maintenance for this system will not be as stringent as for the chlorine one, since sodium hypochlorite is not as corrosive.
Comparing the current yearly cost of the Gaseous Chlorine System of $187,851.00, against the anticipated yearly cost of the Liquid Chlorine (Sodium Hypochlorite) System of $144,983.30, the conversion will reduce the costs of the WTP and EWR.
The nationwide trend is to move past the use of chlorine gas disinfection to other alternatives that are much safer for the population. Please note that the City of Calexico is the only City in the Imperial Valley that continues to have a Gaseous Chlorine Feed System.
Discussion and Analysis:
On April 30, 2026, the Office of the City Clerk received two (2) proposals from the following companies:
# Company Amount
Ardurra Group, Inc. $793,235.00
2 LEE & RO, Inc $318,223.00
City staff has reviewed both proposals 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 $318,223.00 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. This project is currently budgeted in the City's Capital Improvement Program (CIP) as project number 987.
Fiscal Impact:
Capital Improvement Program Budgeted Item for FY 2023-2024 Fund No. 516-90-987-56001-000 $318,223.00
Total $318,223.00
4 Coordinated With:
City Manager's Office.
Finance Department.
Public Works Department.
Attachments):
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. Scoring Sheets and Scoring Matrix.
IMPERIAL
ATTACHMENT 1
AGREEMENT OF PROFESSIONAL SERVICES BETWEEN
CITY OF CALEXICO AND LEE & RO, INC.
AGREEMENT FOR PROFESSIONAL SERVICES
This Agreement is made and entered into as of the 20th day of May, 2026, 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
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 February 18, 2028. 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.
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.
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.
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).
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.
ili. 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 if 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.
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 to any party authorized by Consultant, Consultant's representatives, or Consultant's successor-in-interest.
6 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. 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.
7 CITY OF CALEXICO: CONSULTANT:
Benjamin A. Martinez
City Manager
APPROVED AS TO FORM: ATTEST:
Laura Estrada Veronica L. Alvarado
City Attorney City Clerk
8 EXHIBIT A
SCOPE OF SERVICES
(proposal dated April 30, 2026)
9 EXHIBIT B
SCHEDULE OF CHARGES
10 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 , 2026, at
California.
Consultant
11 CITY 1111.
IMPERIAL
ATTACHMENT 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.
CALEXICO
CALIFORNIA
APRIL 30, 2026 AT 2:00PM
PROPOSAL FOR
ENGINEERING DESIGN SERVICES FOR CHLORINE
CONVERSION PROJECT - GASEOUS CHLORINE FEED
SYSTEM TO LIQUID HYPOCHLORITE FEED SYSTEM -
COST PROPOSAL
CITY OF CALEXICO
PUBLIC WORKS DEPARTMENT / ARDURRA
649 PIERCE AVENUE
CALEXICO, CA 92231 DIR No. 1000392146
ARDURRA: 9665 CHESAPEAKE DR., STE 230 | SAN DIEGO, CA 92123 | T 760.525.9995
ARDURRA
April 30, 2026
FIRM NAME
City of Calexico | Public Works Department Ardurra Group, Inc. 549 Pierce Avenue (C Corporation)
Calexico, CA 92213 ADDRESS
9065 Chesapenie Dr, Ste 230
Subject: Proposal for Engineering Design Services for Chlorine Conversion Project - Gaseous Son Diego, CA 92125 Chlorine Feed System to Liquid Hypochlorite Feed System - Cost Proposal Dear Evolution Committee,
Ardurra Group Inc. (Ardurra is pleased to submit our Fee Schedule to Calexico to provide services for the Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System.
This submite includes Ardurra's complete fee schedule by lusk group with estimates of hours per item of
POINT OF CONTACT
work, wilh subconsultants fees incorporaled into the total. We detailed a lot of assumplions in the scope Carmen Kasner, PE included in the RFP response and that drives the fee details for the project. We are very open to reviewing Project Monager the assumptions and adjusting the fees accordingly. [email protected] M: 760 5259995
The lasks included in the ffP and that are necessary for this lype of project are much more than a simple design project. We grouped lasks logether below lo reflect more clarity in key cost components. A breakdown in the tasks is noted below:
• Task 1 - PM - $69993
• Task 2 & 3 Preliminary Design $ 107,478
• Task 4, 5 & 8-Final Design including SCAD, Electrical, Mechanical & Struciural $313,149 • Task 6 - Permitting $45,337
• Tas< 7 - Public & Council Outreach $30,346
• Task 9 Engineerng support during bidding & Construction $121,413 • Task 10 - Operation & Maintenance Plan $44,931
• Optional Tasks - $55,679
All fees are based on prewailing wage rates as determined by the California Department of Industrial Relalions (Surveying). Ourteam is committed to delivering a comprehensive, coordinated, and cost-effeclive design that meets Calexico's technical, regulatory, and schedule objectives for this imporlant project.
Please contact me al 760.525.9995 or [email protected] with any questions. We look forward to the opportunily to partner with Calexico on this importont initialive.
Sincerely,
Ardurra Group, Inc.
Qun sooner, PE
Cormen Kasner, PE
Project Manager
Authorized Signer
ARDURRA | 9665 CHESAPEAKE DR., STE.230 | SAN DIEGO, CA 92123 | T 760 525.9995
COST PROPOSAL
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B. Appronimately five. (5) meetin!
Subtetal 30 000000002011 IS SAIS 30305
A. Site Control SEE. TE 2.150 10 255151
53813 52750 5 22570
B. Additlenal togegrashy
15 5.300 2 550 51 ESTE
Subtetal
C. Preconstracilen Maling
452 3120712 3 1202S 1115
3511 1S35437
7400 S 1474
B. Finalize Daeraden Manual Plan Update
144711
TOTAL BUDOET 2975 3319346170551532055500333,184 5 731534
3.1 Evaluate attornatire ditinfectien cations 32
12 Develop a CT avalallon study at WIP and EVR 4 16 24 32A062E Atarata Tasks Suatetal
Telat with Alternate Take 3202 5 770692 5 7743 18
^ ARDURRA
CALEXICO
CALIFORHIA
APRIL 30, 2026 AT 2:00PM
PROPOSAL FOR
ENGINEERING DESIGN SERVICES FOR CHLORINE
CONVERSION PROJECT - GASEOUS CHLORINE FEED
SYSTEM TO LIQUID HYPOCHLORITE FEED SYSTEM
CITY OF CALEXICO
PUBLIC WORKS DEPARTMENT
549 PIERCE AVENUE ARDURRA
CALEXICO, CA 92231 DIR No. 1000392146
ARDURRA | 9665 CHESAPEAKE DR., STE.230 | SAN DIEGO, CA 92123 | T 760.525.9995
TABLE OF CONTENTS
pg #
1 COVER LETTER
FIRM OVERVIEW 1
3 PROJECT TEAM 3
4 FIRM EXPERIENCE 37
5 PROJECT APPROACH & SCOPE
OF WORK 46
APPENDIX
A EXHIBITS 54
ARDURRA 1 9665 CHESAPEAKE DR., STE. 230 | SAN DIEGO, CA 92123 | T 760.525.9995
1. COVEN LEFTEK
SECTION
COVER LETTER
ARDURRA
April 30, 2026
FIRM NAME
City of Calexico | Public Works Department Ardurra Group, Inc. 549 Pierce Avenue ( Corporation)
Calexico, CA 92213 ADDRESS
9655 Chesappoke Dr. Ste 230
Subject: Proposal for Engineering Design Services for Chlorine Conversion Project - Gaseous San Diego CA92123 Chlorine Feed System to Liquid Hypochlorite Feed System Dear Evalualion Commillee,
The Clly ol Calexico is undertaking a very important upgrade lo the safely of the communily by planning for the design to upgrade their gaseous chlorine feed system lo a liquid sodium hypochlorite syslem Calexico's water trealment is surrounded by residential properties ond is not close lo industrial sources of gaseous chlorine which means it needs to be transported long distonces which is also a risk. The POINT OF CONTACT Cily needs a team that has worked in high-temperature locations and evaluated different alterolives Carmen Kasner, PE of chlorine treatment in such situations Ardura Group, Inc (Ardurra] has the right team to evoluole the Pojed Morager [email protected]
options, impacts, and costs, to design the most cost-effective long-term solution, and explain it to the M: 700 5259995
public.
Strong Water/Wastewater Team. Ardurra has more than 140 woter and wastewoler engineers, designers, construction managers, and inspectors in Soulhern Colitarnia alone, backed by a firm with ovel 2,500 professionals across the company where waler and wastewater work is more then 60% of the business.
Committed Project Manager. Carnen Kasner will be your project manager, ensuring the Cily gels the right project done. She is focused on client satisfaction and meeting the project goals and objectives on time and within budget. She thinks outside the box and assures that the right solution is picked. She knows desert communities having done extensive water and wastewaler work hroughout the high desert of Califonia ond Arizono. She has been a contract cily engineer and undersionds the issues and constraints from the agency perspeclive.
Right Technical Team. We have puttogether a leam that is principally in-house with Michael Nunley and Kevin Saleh leoding the design and evolualion process and who ore currently working on a very similar project for Three Valleys Municipal Water District. Electricol and Instrumentation & Controls will be led by Omid Khodadodi and Shawn Rohr respactively whose experience in desert climates and with Aveva softwore is top notch. Division of Drinking Water permits are handled by Jacqueline Takeda who has helped many agencies with the process.
We added Roberto Ruiz-Salas of CR Associates to the team for outreach and Council and public inpul as well as Ardura's in-house public outreach supporl.
Strong Understanding of the Project. During Mis. Kasner's site visit, this project wos menlioned as it is really inportant for the safety of the community and staft. After reviewing the RFP and knowing the Citys localion elalive lo sources of hypochlorite and temperalures in the desert as well as the souice waters, we strongly encourage a short evaluation of whether onsite chlorine generalion of use of chloromines might be appropriale allernalives by doing a pros and cons evaluation, including the initial and long-term operlional costs with soffing limitations al the Cily. This will be useful in explaining lo the Council the selected alternalive.
This proposal is good for ninely (90) days. If selecled, the we agree lo provide evidence of and maintain the required insurance coverages of Its sole cost throughout the contract term. Carmen Kasner, Vice President and Southern California Secior Growth Director, Is authorized to sign the contract. Her address is 9665 Chesapeake Drive, Suite 230, Son Diego, CA 92123, ckasner@ardurra com, 760-525-9995.
We look forward to the opportunity lo work with the Cily on this very citical infrastructure project.
Sincerely,
Ardurra Group, Inc.
Carma Hasner PE.
Carmen Kasner, PE
Projaci Manager
Authorized Signer
ARDURRA 9065 CHESAPEAKE DR., STE.230 | SAN DIEGO, CA 92123 T 760.525.9995 2 SECTION
FIRM
OVERVIEW
2 FIRM OVERVIEW
Ardurra's Origins
Ardurra Group, Inc. (Ardurra) is a relationship-bosed, professional services organization primarily serving public woler and woslewoler agency clients for the past 45 years. With 2,500* employees in 100+ offices nalionwide, Ardurra is ronked #75 on Engineering News-Record's (ENR] Top 500 Design Firms and has earned specially rankings in Water Supply (# 12), Wastewater Treatment The project will be managed from Ardura's office localed in Son Diego.
Plants (#11), and Woter Transmission Lines ond Aqueducts (# 13).
San Diego Office: Ownership and legol Stotus:
Over the last several years, we have tripled in size through orgonic 9665 Chesapeake Dr., Ste. 230 Ardura is a rationol fom thal operates growth and strategic ocquisitions lo include MKN & Associales, a San Diego, CA 92123 as a portfolia company of titlejohn & Co. ilC. o Connecticat bosed
respecled California-based firm specializing in water ond wostewaler Number of Employees: privale equity fim. Ardurab o"C 2,600 Nationally los of March Corporation.
engineering services for municipolities ond government agencies; 2026|
and Infrastructure Engineering Corporalion (IEC), a mulli-disciplined 200 in Californio los of Morch 2026)
engineering and construction monagenent firm specializing in the water, wastewater, and public works markets. EC did a number of projecis for Calexico 10-15 years ago.
Ardurra has successfully delivered hundreds of local projects and has served as an exlension of slaff, providing vorous engineering and municipal services lo numerous public agencies thraughout Southern California, including the Cily of Calexico. Under IEC, we provided services to the City for water and wastewater projecs and are pleased to nole thal many members of the stall continue lo be part of our team. We have a working knowledge of local cades, standards, and permit requirements and have extensive fomiliarily with local, siote, and federal procedures, both in helping to oblain funding and in delivering the pertinent documentation.
Waler Is Our Focus in California
Ardurra is deeply commilled to waler in all is forms, locusing on delivering professional services for water, waslewaler, and recycled waler projects. Our firm's experlise encompasses the full range of well and pump stalion projects, from planning and condition ossessment 1o design, rehabilitalion, and inspection. Ardurra's staff members are recognized leaders in industry organizations, aclively contributing to the advancement of standards and best praclices through research, presentations, and participation in professional forums. We conlinually innovale our engineering methods and deliverables lo beller serve our clients. With principols who have decades of experience in monogement and leadership roles at top engineering firms, our regional in-house capabilities include civil, mechanical, trealmeni, instrumentation and controls, and electrical engineering design; project and program management; asset management; water ond wastewater moster planring and hydraulic modeling; feasibility and planning studies; permilling; GIS design and implementation; sewer flow monitoring; constuction monagement and Inspection services; SCADA integralion and start-up; grant support; and public outreach services.
Ardurra has 14 offices with more than 200 employees in California. As neighbors-with our neorby office in San Diego and many of our leam members being residents of surrounding communilles-we are deeply invested In the Cily's success. With more than 160 professionals in Southern Colifornia, we have the depth af resources lo respond quickly to your needs.
Ardurra Is Committed to the Cily
Ardurra is commilled lo compleling the project within the lime frame developed logether with the Cily. Normally for a project of this type, the design is not the long-lead item, but rather the permilling and public inpul which con extend the project design ond approval length up lo year.
ARDURRA IT OF CARCO ENGINEFRING DESION SERVICES FOR CHIOTINE CONVERSION PROTECT
GASEOUS CHLORINE FEED SYSTEM TO HOUID HYFOCHLORITE FEED SYSTEM ..
250+
* SACRAMENTO
CALIFORNIA
* OAKDALE EMPLOYEES ACROSS
14 Office Localions
in California
SAN JOSE
OFFICES
• FRESNO
ENR 2025 ENR
1*500 SOURCEROOK RANKINGS
"75 *62
TOP 500 TOP 100
HAE DESCR
SAN LUIS OBISPO
*129 *70
• BAKERSFIELD
TOP 150 GLOBAL TOP 100
"12 "13 • SANTA CLARITA
SEr:
VENTURA
*11 *11
• LOS ANGELES
& DESAL PANTE
*13 *16 • NEWPORT BEACH
HANSNESION 3у 7A2, 6 •TEMECULA
1 • IRVINE
• OCEANSIDE
NATIONWIDE • SAN DIEGO
PRESENCE
2000+
EMPLOYEES
22 100+
OFFICES
STATES &
TERRITORIES
CHY OF CALEXICO ENGINEERING DESIGN SERVICES FOR CHORINE CONVERSION PROJECT
ARDURRA GASFOUS CHLORINE FEED SYSTEM TO LOUID HYPOCHIORITE FEED SYSTEM,
SECTION
S. PRUJEUI BLAM
PROJECT TEAM
3 PROJECT TEAM
PROJECT MANAGEMENT
PROJECT MANAGER QA/QC
Carmen Kasner, PE Michael Nunley, PE, Assoc. DBIA
PROJECT TEAM
TECHNICAL ADVISOR PROCESS DESIGN ELECTRICAL
Michael Nunley, PE, Assoc. CBIA Stefanas Word, PE, Env SP Omid Khodadadi, PE, PMP
DESIGN LEAD PROJECT ENGINEER INSTRUMENTATION &
Kevin Saleh, PE Raj Chavan, PhD: LEED, PMP CONTROLS
Shawn Rcht TE
SENIOR DESIGN ENGINEER DDW PERMITTING
Richord Kennady, PE Jacqueline (lackie) Takeda STRUCTURAL Michael Auchter PE
DESIGN ENGINEER ENVIRONMENTAL
Chang Ye, PhD, PE, PMP CPE. @SD Charles Smith, AICP LEED AP BD+G
SUBCONSULTANTS
PUBLIC OUTREACH SURVEY (OPTIONAL)
Roberto Ruiz-Salas, PE James Nicolau IV, PLS, RIS
CR Associates Paradigm Geospatial, inc.
CITY OF CALEXICO ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT /ARDURRA 3
GASEOUS CHIORINE FEED SYSTEM TO LIQUID HYPOCHLORITE FEED SYSTEM Key Proposed Team Members
Ardura prides itself on a robust team who are integral to our project management slucture. Ardurra possesses a wealth of additional staff resources across our California offices, providing us with a significant depth of expertise and flexiblily. This project will be executed from Ardurra's San Diego office, but the collaboralive approach with all offices allows us lo effeclively respond lo varying project demands and limelines. Project team and key personnel will be available for the extent of the project.
Carmen has 35 years of experience in municipal services EDUCATION BS, Civil Engineering, Sauth Dakola
focusing on civil design of capilal improvement program (CIP) Stale University, Brookings, SD projects including water, sewer ond storm drain facilities; LICENSES & REGISTRATIONS pipelines; street improvements; and site development. She olfers Professional Civil Engineer, CANo. 50856
vast insight into public parlicipation, permitting and coordination, Professional Civil Engineer, AZ No.
project and design slandards, and site and access constraints. 50589 Carmen Kasner, PE
Project Manager
After over 20 years serving as project engineer, project manager, EDUCATION MS, Civil & Environmental
branch manager, and ultimalely os senior operations monager Body hasily Colonio,.
and Vice President for o Fortune 500 consulting engineering firm, in 2012 Michael Nunley started a firm specializing in woler, wastewaler, and water reuse engineering for public agencies. Iniversily, Blacksburg, V His expertise includes wastewater trealment design. LICENSES & REGISTRATIONS Prolessional Civil Engineer, CA No.
Michael Nunley, 61801
PE, Assoc. DBIA Associale Design-Build Prolessional,
DBIA
QA/QC & Technical
Advisor
Kevin Saleh has more than 30 yeors of experience os o civil EDUCATION BS, Civil Engineering, Universily ol
engineer. He has led and participated in planning, design, Tabriz, Iran construclion management, and construclion support for numerous public works projects, porticularly in woler and wostewaler. Conada His experise spans the design ond management of water roject Management (PM distribulion and treotment facilities, pumping stations, realment arificole, Cornell University, hace NY
plont processes, reservoirs, pressure-reducing/surge lacililies, Kevin Saleh, PE LICENSES & REGISTRATIONS
wastewater conveyance systems, pumping stations, and Professional Civil Engineer, Design Lead CA No. 90535
treatment plant projects.
ENGINEEPING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT 4
ARDURRA GASEOUS CHLOEINE FEED SYSTEM TO LIQUID HYPOCHEORITE FEED SYSTERI In his 51 years of experience, Richard has managed the design EDUCATION BS, Mechonical Engineering.
of more than 15 new and retrofit pump station projects ranging California Polytechnic Slote Universily.
In size fram 400-gpm to over 400 MGD, with varlous lypes of San Luis Obispo, CA pumps and drive configurations. He has managed the design LICENSES & REGISTRATIONS Professional Mechanical Engineer,
of new and retrofil waler realment plant projects. He effectively CANo. 18719 manages project budgets, schedules, and risks and continually Richard Kennedy, finds ways to minimize construction and operallonal costs.
PE
Senior Design Engineer
Chang Ye has been goining Industrial experience in civil EDUCATION engineering since 2005. He has designed and managed over PhD. Civil Engineering, Missouri Unversity of Sclence and Technology,
200 chil infrastructure projecis in Southern California, including Rolla, MO potable water reservoirs; waler wells; pump and lift stations; MS, Applied Ecology, Chinese Academy of Sciences, Beijing, China
worer, sanitary sewer, and recycled water pipelines; stormwater BS, Environmental Engineering, drainage systems; trealment facilities; on-sile trealment systems; Zhejiong Agricullural University, airports; railroads; and sile gradings and developments. Zhejiang, China Chang Ye, PhD, PE, LICENSES & REGISTRATIONS
His expertise includes developing Plans, Specifications, Professional Civil Engineer,
PMP, CPE, QSD
and Eslimales and bid documents; providing construction CA No. 68761 Design Engineer Project Management Professional
management and support; developing waler, sewer, and
(PMP), No. 3709402
recycled water system models with various madeling lools and Cerified Professionol Estimalor (CPE), GIS; conducting hydraulic and hydrology analyses; preparing CA No. 310000. 191•0919 various moster plans and emergency response plans; developing Qualified SWPPP Develaper (GSD).
CA No. 68761
Sormwater Pollution Prevention Plan, Low Impact Development, Water Qualily Management Plan, and various environmental compliance programs and reports; and assisting in developing slandards and specificalions for agencles
Stefanos Word is a senior engineer and water realment EDUCATION MSES, Civil & Environmental
lechnical lead experienced in the optimization, planning, design, Engineering, Universily of the Pacific, and construction of advonced groundwater treatment and Stockton, CA surface water trealment facilities. His project experience includes BS, Civil Engireeting Universily of the Pacific, Slackion, CA
lon exchange, desalination, air stripping, pressure filtration LICENSES & REGISTRATIONS VOC and inorganics removal), conventional physical-chemica Professianal Civil Engineer, realment processes, and chemical storage/injection facilies CA No 93856 Stefanos Word, PE, His project experience also includes instrumentalion and Envision Sustainobilily Professional Env SP IENV SP). No 18683
controls design for large- and small-scale facilities, slate-and Process Design
Federal permitting, field collecion of data, pilling, and starlup of realmeni facilties. He enjoys working collaboraively with agencies to provide cost effeclive and realive solutions lo waler quality challenges for communities across Colifornia.
^ DO CARD ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT - 5 ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LOUID HYPOCHIORNE •FED SYSTEM With over 20 years of experience in civil and environmental EDUCATION Doctorale in Civil ond Environmentol
engineering, Raj specializes in waler ond wastewater treatment Engineering, Uni of Nevada, Reno, praclices, focusing strongly on sustainabilly, resilience, and climale change adaptation. His expertise extends lo the One Water approach, integraling water reuse, conservalion, and B5, Shivaji Uni, Kollopur, India environmental stewardship inlo every project. Raj designs and LICENSES & REGISTRATIONS retrofils a variety of surface waler, weslewaler, and water reuse Multiple (Sec Resume) Raj Chavan, PhD,
treatment facililies.
LEED, PMP
Project Engineer
Jacqueline (Jackie) Jocqueline (lockie) Takeda hos over 20 years of experience EDUCATION BS, Biological Sciences with
Takeda in woter quality, regulatory planning, and optimizing water Emphasis in Neurobiology.
DDW Permitting syslem operalions. She specializes in devising regulatory Physiology, and Behavior, Universily of Colifornia, Davis CA
compliance siralegies to meal California Division of Drinking
LICENSES & REGISTRATIONS
Water requirements, evalualing treatment plant and distribulion Grade 2 Water Trealment Operator system performance, and identifying and implementing process [CA Stale Water Board improvements. Her experience extends from groundwaler Grade 2 Woler Distribulion Operotor (CA State Water Board
expertise from Southern California's West and Central Basins lo Cross-Connection Control Specialist Central Volley, Salinas Valley, and Boy Area peninsula regions. (CAN AWWAI Charles Smith is a resulls-driven environmental professional with EDUCATION MPI, Urban ond Regional Plonning,
over 30 years of experlise in impact assessment for planning, Universily of Southern California, Los development, and public works infrastructure projects, including Angeles, CA waler, wastewater, coosial, renewable energy, oil & gas, BS, Business Administration, Los Angeles, CA
rail, and surface Iransportalion. Charles possesses a deep LICENSES & REGISTRATIONS knowledge of state and lederal environmental regulalions, American Institule of Certified including CEGA and NEPA, as well as regulalory compliance, Planners (AICP) #O11766, Americon Charles Smith, Planning Association
AICP, LEED AP BD+C permilling, historic preservalion, ond sustainable development. Leadership in Energy and Environmental Design Accredited
Environmental Prolessional (LEED AP) Building
Design and Consiruclion (BD+C), US
Green Building Council
Omid Khodadadi is a registered senior electrical engineer EDUCATION BS, Electrical Engineering, Universily
with 12 years of experience in power and control systems of Walerloo, Ontorio, Canada design across diverse sectors including water resources, mining, transportallon, and oll ond gas. He has led mulidisciplinary No. 24564
leams and served as engineer-of-record on complex EPC
projects throughout the United States and Canada. His expertise spans MI/LV power distribulion, instrumentalion and controls, Omid Khodadadi, system studies, and compliance with industry standards, moking
PE, PMP
him a valuable lechnical leder in both public and private sector Electrical
infrastructure development.
I CALICO EMGINEEPING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT - ARDURRA GASEOUS CHORINE RED SYSTEM TO HOUD HYPOCHIORE TEED SYSTEM:
Shawn Rohr has over 35 years of experience locused on EDUCATION BS, Electrical and Compuler
power and control system design of water and wastewater Engineering, Konsos Stole University, realment ond distribution facilties, including the design of power, Manhallan, KS control, instrumentation, and SCADA systems. His experience LICENSES & REGISTRATIONS Professional Elecrical Engineer, CA
also includes project monagement and project engineer No. 21900 responsibilities which include delermining design requirements No Some Electice Engine, AZ.
Shawn Rohr, PE with clienis; preparing estimates for the electrical and I&C Professional Electricol Engineer, MO designs; coordinaling belween the electrical ond I&C design No. 27858 Instrumenlation & Controls
engineers and the client and other engineering disciplines; and providing construclion support and startup services. He has completed electrical and control system designs for realment plants, chemical feed syslems, and pumping slations.
Michael Auchier brings nearly 30 years of experlise in EDUCATION BS, Civil Engineering. University of
stuctural engineering and project management. His experience Arizona, Tucson, AZ spans a variety of projecis, including projects for cily and LICENSES & REGISTRATIONS caunty governments; K-12 schools; federal/ military projects; Professional Civil Enginear, CA No. 64422
and industrial projects. Throughout his career, Michael has successfully managed projects of varying size ond complexity Michael Auchter, and provides limely, high-quality, and responsive service lo every client.
PE
Structural
CATO CATERICO EINGINFERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT • ^ ARDURRA GASEOUS CHI ORINE FEED SYSTEM TO LIQUID HYPOCHLORITE FEED SYSTEM Subconsultants
To strengthen our team, we made deliberate choices lo provide you with highly skilled, reliable resources. The professional capobilities of each firm are briefly highlighted below. We have successfully collaborated on previous projects with all of the subconsultants identified, ond these estoblished warking relolionships will translate to effeclive communication, hust and salely in the field, schedule efficiency, and the besi value for the Cily.
CR Associales
Founded in 2011, CR Associales (CRA) is a mobility Iransportalion consullant with over 70 engineers and planners working from Iwo offices in San Diego and Los Angeles, Colifornia. CRA is o WBE, SBE, and MBE certified firm committed to planning and designing Iransportation systems and idenlifying mobilily improvements that creale and support vibrant and sustainoble communities. We lake a Fully multimodal approach, building upon the mulli-dimensional experiences of our stolf, along with our dedicalion lo serving the full range of client needs.
Roberto provides consulling services lo agencies developing EDUCATION BS, Civil Engineering, Colifornio
copital improvement projects, including multimodal transportation State Polylechnic Universily, Son Luis and public utilities design. An excellent communicator with Obispo, CA infeclious positivity, Roberto has managed privale and public LICENSES & REGISTRATIONS Professionol Civil Engineer, CA No.
projects that involve coordinaling large mull-firm consulling 81946 leams across engineering disciplines. He has been leod
Roberto Ruiz- Engineer for projects including roadway, roundabouls, signing Salas, PE ond sliping, bicycle facilities, park design, water qualily, site grading, and wiliy design. Hoving worked extensively in the Public Outreach
CR Associales region, Roberto is deeply familiar with the requirements of Soulhern California agencies.
Paradigm Geospatial, Inc
Paradigm Geospalial, Inc. provides lechnologically innovalive and adaptive solutions to the land Surveying and Geospatial Engineering markelplace. They intelligenlly implement state-of-the-art lechniques and procedures, invest heavily in internal research and development, implement lechnologically superior workflows, and uilize the latest lechnological advoncements, including robotics and laser scanning lechnology.
Our leam has decades of experience in providing Land Surveying & Geospalial Engineering services lo many local agencies and municipalities.
Jomes possesses over 17 years of professional experience EDUCATION compleling survey, mapping, ond design projects. His history LAS, Surveying, Cuyama Collage, colon, Cr
ncludes planimetric and topographie surveys, boundary ano LICENSES & REGISTRATIONS right-of-way mapping, land descriplions, and deed anolysis. Passional Land Survey, CA No.
Moreover, with complimentary Projec! Management and Real Estale expertise, in both the private and public seclors, he brings Prosional Land Sue, iZ. Na. a unique depth ol experience and strengih of copabilly lo his Polessional Land Survey. NV No.
James Nicolau IV, 031343
piograms.
PLS, RLS
Survey (Oplional)
Paradigm Geospalial, Inc.
ARDURRA ENGINEERING DESIGN SERVICES FOR CHLORINE COINVERSION PROJECT
GASEOUS CHLORINE FEED SYSTEIA TO LOUID HYPOCHIORITF FED SYSTEM,
CARMEN KASNER, PE
PROJECT MANAGER
EDUCATION Cormen has 35 years ol experience in municipal services lacusing on civil design of capital • BS. Civil Engineering,
Soulh Dakola Stale improvement program (CIPI projects including water, sewer and storm drain facilities; pipelines; stree! Univeraily, Brookings, 5D improvements; and sile development. She offers vast insight into public participalion, permiting and coordinalion, project and design stondards and sile and access cons/raints. Carmen's experience
LICENSES &
REGISTRATIONS includes extensive levels of inventory developinent and condillon essessment of agency ossels, Professional Civil Engineer, with projects ronging from sonitary to storm lo roadway syslems. Her experience also includes CA No. 50856
extensive work and coordinalion with various agencies in southern Californla involving flood control, • Prolessional Civil Engineer,
AZ No. 50589 development, transporlalion Issues, water system capacities, sewer conditions and public meelings.
She offers vost insight into public seclot engineering, having served as contract Gily Engineer for
PROFESSIONAL
ASSOCIATIONS 8 years with the Cily of Del Mor, and 11 yeors with the Cily of Imperial Beach. She has a strong • Society of Women repulation of completing the difficull projects on time and with in budgel.
Engineers
• Americon Society of Civil Nastewater Monag + Support | City of National Engineers (ASCE), Pasi Project Manager and Principal-in-Charge. The project consisted of various task orders Prosident, Son Diego
providing project management support for the Cily's wastewater system design and planning work.
Saclion
Americon Public Works Such support has Included consullant management for master planning support, mapping updates, Association (APWA] - San Row evaluations, conceptual planning for CIP projects, developing preliminary costs, meeling with field Diego Imperial Conly
stoff and other lasks as requested by the City. Ardurra has coordinated and conducted various Closed- Chopler - Vice Fresident
Circuit Television (CCTV) inspeclions and condilion assessment projecis of various selecled sewer
YEARS OF EXPERIENCE
mains, documented the findings relaled lo maintenance and/or structural deficiencies, developed • 4 wilh Ardurto
* 35 Tolal improvement recommendations for the noted deficiencies, and prioritized the improvements.
Upper and Lower Son Luis Rey Water Reclamation Faellity (SLRWRF) Recycled Water Convayance Systems | City of Oceanside, CA
Principal-in-Charge. The project included ullity research and mapping, development of alignment allemolives, and on alignment sludy for 32 miles of reclaimed water disribution pipelines lo be constructed in the nexi lew years. The project will supply reclaimed water from the Son Luis Rey Water Reclamalion Facilly lo major users throughout the Cily to offsel the use of polable waler use for irrigation. Final construction documents for Phase 1 were compleled and are under construction and final plans for Phase 2 of the proposed reclaimed waler distribulion system are being prepared Proposed alignments include congested utility corridors, high traffic volume roads, irenchless crossing of NCTD Iracks, the San Luis Rey River, and major interseclions. Pipelines will tange in size from 20-inch to B-inch in diameter. Work performed prior lo Ardurra.
As-Needed Engineering Services | City of Imperiol Beach, CA Principal-in-Charge and City Engineer. As-needed contract which involved civil engineering services including development review, stall augmentalion, design, consinuction management, and inspection services to maintain and operate city infrastructure. Work involved preparation of sludies,
ENGINEERING DESIGN SERVICES FOE CHIOLINE CONVERSION PROJECT
ARDURRA GASEOUS CHICEINE FEED SYSTEM TO HOLD HYPOCHIORITE FEED SYSTEM stale-mandated review of CIP projects, and coordination of federal and stale reimbursement of CIP projects in conformance with Caltrans guidelines. Tosk orders included o pavement management plan update; lighling assessment district updale; and the Elm Avenue design Improvemenis, street improvement, and ADA upgrade projects funded by SANDAG. Work performed prior to Ardurra.
Zones 4 and 5A Water System Improvements | Cily of Lake Havasu City, AZ Project Manager. The project conssted of water system improvements involving a feasibility study, preliminary design, and final design for the Cily of Lake Havasu Cily. The improvements included 1.0-MG tank for Zone 4, 0.75 MG tank for Zone SA, 20-inch PVC MeCulloch pipeline, and B-inch PVC including necessary backup generators for their two largest water pump stalions. Engineering services including planning, designing, and obtaining additional lands for future tanks 6 and 6A lo improve overall system reliabilily and enhance pump stalion hydraulics. The project included assisling City staff with acquiring the properly sized land parcel and right-of-way for the water infrostructure improvements and access roods. Work performed prior lo Ardurra.
As-Needed Engineering Services | City of Del Mar, CA
Consulting City Engineer. Provided as-needed city engineering lasks including managing the CIP; completing review and processing of subdivisions, encroachment permits, and privale development projects; providing coordinalion and guidance on regional issues that relate lo engineering and that affect the city; responding to public inquirles; and maintaining and updaling the City's GIS system of water, sewer, and storm, drain. Dulies included presentalions of cily council meelings, preparation of staff reports, completing environmental processing for projects and advertising, award, and construction management for projects. She was responsible for coordinating with adjacent agencies on numerous issues that are jointly impacled the agencies, and applying for gronts and completing the processing and paperwork necessary for reimbursement. Work performed prior to Ardurra.
Plant 1 and Plant Il Generator Design | Pico Rivera Water Authority, Pico Rivero, CA Project Manager, The project consisted the development of preliminary and final plans for the Cry's Plants I and I. The project included evaluation of proposed components and developing a delailed plan for new diesel generators that ore in compliance with current South Coast Air Pollution Control Districl. The generators were sized for handling the well pumps and system pumps during on emergency. The Cily is completely dependent on pumps lo pressurize their waler system, and this project will provide the necessory improvements to improve reliability in he case of emergency. Work performed prior la Ardurra.
Water Master Plan | Pico Rivera Woter Authority, Pico Rivera, CA Project Manager. The project consisted of managing the PRA's water masler plan compleled in July 2009. This document is being used as a framework and support for the system improvements needed within PRA's water system. The PRWA oblains a of its waler from groundwater ond the remainder from the the Central Basin's Water Quality Prolection Project (WQPP). PRWA's aging system has severely limited storage capacily and an aging supervisory control and dala acquisition (SCADA) and generator system. The praject olso included a follow-up losk order that addressed oplions for interconnecting PRWA and the Pico Water District [PWD), preparation of grant applicalions for system improvements, and an evaluation of an appropriate commodily role for their groundwater. Work performed prior to Ardurra.
Water System Improvements Scodo System Upgrade | Pice Rivara Water Authority, Pice Rivers, CA Project Manager. The projeci consisted the development of a SCADA system improvemen project. The project included evaluation of proposed components and developing a delailed plan Including soliwore seleciion, equipment lists and control schematics for both the waler syslem and sorm drain pump stalions, ond an oulline of both interim and ultimate SCADA improvements. Subsequently, our firm prepared a bid specificalion that will be used bid ou the electrical work needed for the SCADA project including new radio antennas ol three localions.
Work performed prior to Ardurra.
Water Treatment Plant (WTP) Corrosion Study | City of Poway, CA Project Manager. The project consisted the evalualion of the concrele corrosion problems that the Cily of Poway is experiencing of their WTP. This project included coring the concrete and taking samples of the waler and other oppurtenances to delermine the source of corrosion and the methods hot can be used lo protect the plant and reduce the migralion of the problem. Work performed prior to Ardurra,
OCAL ENGINEERING DESIGN SERVICES FCIR CHIOLINE CONVERSION PROJECT - ^ ARDURRA GASFOUS CHINE FEED SYSTEM ID IQUID HYPOCHIORITE FEED SYSTEM 10 ooster Pump Station 1 Design and Water Master Plan Review | City of Lake Havasu, CA Project Manager, The project conssled of upgrades to booster pump station 1, which involved upsizing three existing 1,400-gallons- per-minute (gpm) verlical turbine pumps to four 1,400-gpm pumps. The existing pumps were more than 10 years old and appered to be operaling off their design curve. A shade structure, elecirical enclosure, and sile retaining walls were also designed. The existing pump stallon is on a sile with two steel tanks that are adjacent lo the Pima wash that hos experienced extensive degradation. This sile is at the boltom of the cily's pumped syslem ond is crilical for keeping waler flowing into the syslem. This project also includes the evaluation of the water master plan (completed by others) and a calibration process through flow lesling that was undertaken to more accuralely model the existing syslem. These efforts helped the Cily assure thal improvements being designed have been optimized for the Now needs of the system. Work performed prior lo Ardurra.
loca Raton and Sky Ridge Reservoir Rehabilitation | City of Poway, CA Project Manager. The project consisted of bringing bath reservoirs up lo current seismic standards, enhancing their reliabilily. With new adjocent reservoirs of both siles, these reservoirs were able to be taken out of service for repair. Worked closely with City staff In evalualing the required Improvements. She oversow detailed sile layouts for the revised inlet/outlet piping and incorporaled details for new halches, level gages, lex couplings, new wall penetrations, interior and exterior ladder replacements, and vents for both reservoirs. Maintaining full reservoir capacity required additional bracing for sloshing issues. Pavement rehabillalion ond a new concrete swale were evaluated at Boca Raton to address drainage needs. Work performed prior lo Ardurra. † and Torrey Pine Reservoir Rehabilitation | City of Del Mar, CA Project Engineer. The project involved the seismic upgrade to 0.25 MG ond 0.75 MG steel tanks. Improvements included on-site piping modifications, rock anchors, hazardous wasle disposal, access constraints, and operational constraints. This project also involved recooling of both the interior and exterior of the tanks. Work performed prior to Ardurta.
Encinitas Dual 14-Inch Sewer Force Mains Replocement | City of Encinitas, CA Project Engineer, The project consisted of the expedited design to replace the deteriorated force main with 4,800 feet of 14-inch PVC force mains and associaled connections that crossed numerous uililles and a drainage channel within a constrained alignment corridor, addressed Caltrans design and encroachment permit requirements, and incorporated the Cily's water pipeline project into the overall design- in just 30 days for the Cily of Encinitas, Orgonized and led the design leam, including almost daily communicalion with the City stoff gaining input and buy-in on the design approach withou! wailing for formal meelings. Mulliple tasks-ulility research, survey, agency coordinalion, and permitting-were undertaken concurently lo achieve this acceleraled schedule.
Tratwood and Morkingbird Wastewater Sawer System Expansion (WW5E) System Improvements | City of Lake Havasu, AZ
Design Manager. The project consisled of for the last two phoses of the Cily's WWSE program. Responsible for the overall day-lo. day monagement of the project including resource allocalion, final design decisions, and guidance on the overall approach. The project includes converting 3,400 properlies from seplic la sewer system, ond approximately 32 miles (170,000 lineor feel) of new sewer mains that range in size from 6. to 12 inch. This fast-tracked project was compleled in 6 months, while similar projects completed by others required 12 months. Initiated revised profile changes and insiluted the first plans produced in color for improved clarily. She continued ofter design as the overall expansion praject manager during construclion, negolialing contracts lo assure that budgels and client expectalions were met. Work performed prior lo Ardurro.
As-Needed City Engineering and Traffic Engineering Services | City of Dana Point, CA Deputy City Engineer. Responsible for managing the Clly's CIP, developing new projects, coordinaling with regulatory and olher agencies, coordinating with the public, ond implementing national pollutani discharge elimination system (NDES) requirements. A major project included installation of the Sall Creek storm drain realment project to real storm water with ozone and improve the qualily prior lo discharge al the mouth of Sall Creek. Oversaw contract for as-needed engineering and development review services for the Cily. Work performed prior to Ardurra.
ENGINEERING DESIGN SERVICES FOR CHORINE CONVERSION PROJECT •
ARDURRA GASEOUS CHIOEME FEED SYSTEM TOUQUID HYPOCHLORITE FEED SYSTEM MICHAEL NUNLEY, PE, ASSOC. DBIA
QA/QC & TECHNICAL LEAD
EDUCATION After over 20 yeors serving as project engineer, project manager, branch manager, and ulimalely as • MS, Civil & Environmental senior operations manager and Vice President for a Foriune 500 consulting engineering firm, in 2012 Engineering, Universily of
Colifomio, Berkeley, CA Michael Nunley storied this firm specializing in waler, wastewaler, and woler reuse engineering for BS, Civil Engineering, public agencies. His experlise includes management, planning, and design of waler, wastewaler, Virginia Polylechnic Inslitute recycled woler, and drainage focilities in Californio, Howaii, Guam, Washinglon, North Carolina, and State University,
Blocksourg VA Virginia, Soulh Carolina, Tennessee, and Georgia.
LICENSES & Central Water Trealment Pian Hydroulic Evaluation, Plonning, and Design i REGISTRATIONS Atascadero Mutual Woter Company Atascadero, CA * Professional Civil Engineer,
CA No. 61801 Project Manager. Atascadero Mutual Woler Company hired MKN to perform a hydraulic • Assoclate Design-Build analysis for a future central waler realment plant lo remove PFAS and salts and determine how to best Professional, DBIA Integrate the facilily into the existing water distribution system, then proceed with planning and design PROFESSIONAL of the new waler realment facilily. In addition, AMWC requested MKN onalyze and develop design ASSOCIATIONS criteria for a proposed pump stalion to convey waler from the Main Zone lo the Random Oaks Zone • Americon Council of so the entire water distribulion syslem would receive realed water from the CWTP. The Random Oaks Engineering Componies
(ACEC) Zone is currenity supplied by Wells BA and I3A, which would be put onto standby stalus. Work also • Amerioan Public Works included energy usage consideralions and development of operalion/moinlenance cost opinions for Associalion (APWA) project alternatives.
• Americon Sociely of
Civil Engineers (ASCE), Surface Water Treatment Plant | Meiners Ooks Woter District, Ventura, CA Environmental & Wator
Lead Civil Engineer. The project consists of planning, design, and construction of o 1.0 MGD Resources Instilute
• Colifornia Waler sulace water trealment facilily ireling groundwater under the influence of surface waler through direc! Environment Association filtralion technologies with chlorine gos, sodium hypochlorite, coagulant, and provisions for ammonia (CWEA) sulfate storage and injection lacilities. Guided development of construction plans, specifications, and • Waler Environment
Federalion (WEF) cost estimates lor civil design discipline.
YEARS OF EXPERIENCE Supplemental Water Project | Nipomo Community Services District, Nipomo, CA 13 with Ardurra Project Manager. The project involved the preliminary, concept, and final design of a $20M water 32 Total line connection from the NCSD distribulion syster to the City of Santo Maria's system. Components included 2800 If HDD under the Sonta Maria River, 3,000 acre feel per year (AFY) pump stalion, 0.5 MG reservoir, conversion of four wellhead chlorinalion systems lo chloraminalion, and over 4 miles of 12-inch water lines Including pressure reducing volve stations and oppurlenances.
Progrom Monagement for Water Recyeling Fetility Operations and Capital Improvements | City of Santa Paula, CA
Project Manager. Since 2016, MKN has served as the Cily's stalf exension and Program Monager for regulatory compliance, emergency response, repair, and copital improvements of the Cily's Water Recycling Facilly. This has expanded over the last six years lo include water ond waslewaler master plonning, urbon waler management plans, water regulatory reporting, and ENGINEERING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT 12
ARDURRA GASFOUS CHIOLINE FEED SISTER TO HOLD HYPOCHLORITE FEED SYSTEM stormwater support. MKN also completed the Climate Change Effects Vulnerability ond Adaplalion Plan for the waslewoler collection and Ireatment syslem.
Rechic n improve ments | Blacksburg Christiansburg Virginia Polytechnic Institule Water Authority, VA Project Engineer. The project involved the design of a lablet chorinalion system for a booster pump stalion. outhiona Wast lity Design | Nipomo Community Services District, Nipomo, CA Project Manager. The project involved the design of o 0.9-MGD extended aeration treatment facility including new headworks, screening, gril removal, blower/control building, gravily belt thickener, aerolion system, secondary clarifiers, process water pumping and distribulion, and supporting facilities. Michel also directed the completion of a Report of Wasle Discharge and provided support during preparalion of the Environmental Impact Report for the project.
Waste iment Facility Equipment and Process Optimization | City of Oxnard, CA Project Engineer. The project involves reviewing existing Wastewaler Trealment Facility (W/WTF) equipment and processes for 22 MGD plant, including primary sedimenlation tanks, biolowers, aclivaled sludge trealmen, secondary sedimentation tanks, chlorination/ dechlorination, primary sludge realment, dissolved air folation, anaerobic digesters, and belt filter presses, for comparison of exisling as- construcied technologies in relation to new potential trealmen technologies. (subconsullant lo Penfield & Smith.
Wastewater Treatment Plant Chlorine Contact Basin Improvements | Town of Abingdon, CA Project Engineer. The project invalved the design of an aeration syster for infusing dissolved oxygen and sludge flotation ond removal Water Reclamation Facility Program Management - Planning, Permitting, and Procurement Phases | City of Morro Bay, CA
Program Manager. The project involved the development of a new 1 MGD water reclamalion facilily ond recycled water delivery syslem lo replace on existing wostewaler treatment lacilily thal discharges lo the Pacific Ocean. The scope of work included preliminary planning and permitting; public outreach; management of CERA, Facility Master Planning, hydrogeologic, design, and olher consultonts; development of a master recycled water plan; management of program schedule and budget; outfall studies and management plan for brine; preliminary design of facility components; and preporalion of bridging documents and RFPs.
Water Treatment Improvements| Blond Correctional Cahter, Program Engineer. The project involved aulhoring oPER discussing waler source, Irealment, and storage allernalives lo improve the existing facilities.
Wafer Treatment mprovements Town of Grema, VA
Program Engineer. The project involved aulhoring the operalions and mainlenance manual for the upgraded water treatment plant.
Water Treatment Plant | Bedfard County Public Service Authority, VA Program Engineer. The project involved the design of o 60,000-gpd water treatment facily for the Highpoint Community. The plant utilizes membrane firation for the trealment of surface waler from Smith Mounlain lake. Developed full-scale demonsiration testing and the pilos lesling protocol for this facility.
Water Redemation Facility Upgrades - Design-Build Delivery | City of San Luis Obispo, CA Principal-in-Charge. As port of the PGE/ Southland Industries design-build team, Identified and evaluated Energy Conservation Measures (ECMs) for the Cily of San Luis Obispo's water distribulion, sewer collection, wastewaler freciment, and groundwaler production facilities. ECMs were evaluated to improve energy efficlency ond decrease operating costs ullizing PG&E's Sustainable Solutions Turnkey (SST] program. Over $7M in capital projects were selected for improvements including solids dewotering locilly upgrades, headworks screening, primary sludge pumps, RAS and WAS pumping systems, SCADA system, and digester gas cogeneralion syslem replacement. Alsa perlormed final design and construction-phose support services. ^ NOT CHIEXICO ENGINEERING DESIGN SEPVICES FOT CHLORINE CONVERSION PROJECT /ARDURRA GASFOUS CHIONE FEED SYSTEM TO HOUID HYPOCHIORITE FED SYSTEM 13
KEVIN SALEH, PE
DESIGN LEAD
EDUCATION Kevin Saleh hos more than 30 years of experience as a civil engineer. He has led and participaled • BS, Civi| Engineering, in planning, design, construclion management, and construclion support for numerous public works Universily of Tobriz, Iran
profects, parlicularly in waler and wastewater. His expertise spans the design and management of • Computer Programming/
Syslem Analysis, Seneco water distribullon ond reatment lacillies, pumping stalions, realment plant processes, reservoirs, Polylechnic, Toronlo, pressure-reducing/surge faciliies, waslewaler conveyance systems, pumping slations, and trealment Canado
plant projecis.
Project Monagement
(PM) Cerlificale, Cornell Miramor Plant Acid Feed System Upgrade Project | Three Volleys Municipal Water University, lihaco, NY
District, Claremont, CA
LICENSES &
Project Manager. The project consisted of providing engineering design services to Three Volleys
REGISTRATIONS
• Professional Civil Engineer, Munkipal Waler Distrlel for the Miramor Plant Acid Feed System Upgrades project, which upgraded CA Na. 90535 the Distric's existing chemical feed facilities to support copper sulfate pentahydrate (EarhTec®) dosing • Profess.onal Civil Engineer, for algaecide, bactericide, and golden mussel miligalion purposes. Originally designed for acid MD No. 36759
service, the lacility was evaluated and redesigned lo accommodate revised chenical storage, feed, PROFESSIONAL and injeclion requirements, including a new remote injection localion of the Rialio Feeder Iurnoul. The
ASSOCIATIONS
project included design ol new chemical stolage and containment facilities, dup'ex melering pumps, - American Membrone
Technology Associolion Ironsfer piping, injection equipment, a prefabricaled remote feed enclosure with day tank and booster (AMTA] system, and relaled sinuclural, electricol, instrumentation, ond sofely improvements. * Water Environment
Federation (WEF) Terrance Refinery Water Recycing Plant | West Basin Municipal Wafer Districs, YEARS OF EXPERIENCE Corson,
* 2 with Arduiro Project Manager. The project consisted of providing condilion assessment and plonning services • 32 Tolal Ior West Basin Municipol Water District's bulk chemical storage and feed systems of the Torrance Refinery Water Recycling Plant. The projecl included evaluation of 13 chemical systems associaled with the facility's nitrificolion and MF/RO Irealment processes, including sodium hypochlorite, sodium bisulfite, sulfuric acid, sodium hydroxide, citric acid, RO CIP chemicals, and threshold inhibitor sysiems.
Working with Pacific Engineering, MKN performed a comprehensive assessmeri of lank inlegrily, associated mechanicol, electrical, contrals, structural, containment, salely, and operabilily conditions io delermine remaining uselul life and identify deficiencies aflecling reliobilily, salely, and long-lerm mainiainability.
Sodium Hypochiorile Storage Facility | City of Anaheim, CA Project Engineer. Responsible for design of Sodium Hypochlorite siorage facility, including sizing and design of containment orea, storage tanks, piping malerials determinalion, and mechonical layout.
He was also responsible for engineering services during construclion including reviewing submittals, lesponding lo RFls, as needed sile visis, and allending construction progress meelings with the Cily representalives and the contractor.
COTCAREO EIGINEERING DESIGN SERVICES FOR CHIORINE CONVERSION PROIECT ^ ARDURRA CAERUS CHIORINE FEED SISTEM TOUGUID HYPOCHEOPITE EFED SYSTEN Recycled Water Quality Improvement City of Son Clemente, CA Principal Manager. Kevin led the design and implementation of a 1.2 million gallons per day (MGD) microfiltration/ reverse osmosis (MF/RO) system for the Cily of San Clemente Water Reclamation Plant (SCWRP) project, This advanced treatment system was dasigned as a side-stream terliory treatment process to operate in conjunction with the existing 5 MGD tertiary effluent copocily of the CSCWRP. The project's primary goal was to reduce total dissolved solids (TDS) in recycled water, ensuring compliance with stringent effluent limitations and enhancing the qualily of waler delivered to local customers. Kevin's responsibilities included overseeing the preparation of detailed sile, mechanicol, structural, and electrical design drawings and specifications, interdisciplinary coordination, and ensuring seamless Integration of the MF/RO system with exisiing plant infrostruclure. A crilical aspect of the project involved collaboraling with Trussell Technologies, the process design sub-consultant, lo oplimize the treatment process and validate design porameters. The dulies also included regular communication will stakeholders, maintaining project schedules, monitoring budget adherence, ensuring that the project progressed smoothly through design and construction, and mainlaining alignment with the Cily of San Clemente's waler quality improvement and operalional efficiency goals.
Calcium Thiosulfate Chemical Feed System Project | Union Sanitary District, CA Civil Engineer. The project provided construction support services for the project lo replace an existing calcium thiosulfate storage and metering facility with a new fully unclional dechlorination facility to handle higher and more frequent plant discharges to an emergency oullet.
The project included new chemical metering pumps, slorage lanks, piping, electrical, ond instrumentation lor the new dechlorinalion lacilily.
The project also included conducting a pump evaluation lo determine the best available chemical metering pump lype lor this applicalion.
Cement Hill Water Treatment Plant Chemical System Rehabilitation | Suisun Solano Water Autherity, CA Civil Engineer. The project involved providing design and construcilon support services for the Cement Hill Water Treatment Plant, Chemical System Project. The project will convert he plant disinfection system from chlorine gas to sodium hypochlorile. Both on-site generalion of low- strengih hypochlorite generalion ond medium-strength |12,5% bulk deliveries will be evaluated. The bulk hypochlorite system wil likely consist of two 12,000-gallon hypochlorite storage lanks and multiple hypochlorile melering pumps for dosing al the various raw water and residual dosing localions. The project also includes the replocement and reconfiguralion of the plant filler aid and coagulant dosing syslems, as well os the replacement of all chemical piping between the melering pumps and dosing localions. This project is currently under construction. 1 MOD Tertiary Membrone Filtration | City of Corona, CA Principal Engineer. Served as a key contributor in the design and engineering services during the construction of a 1 million gallons per day (MGD) tertiary membrane fitration plant wilizing the advanced ZeeWeed membrane syslem. This project was instrumental in expanding he region's waler reuse copacily and suppoiling long-term sustainability initiatives. Responsibillies encompossed prepring detailed design plans ond technical specificallons for cilical Infrastructure components. The design included a membrane feed pump stalion engineered to maintain plimal and consistent feedwater pressure, ensuring reliable membrane performance. A clean-In-place (CIP) system wos Incorporaled to facilitale elleclive mainlenance, reduce downtime, and extend membrane lifespan. The project also involved designing a cherical feed and containment syslem to support cleaning and disinfection processes while ensuring regulatory compliance. The membrane effluent piping system was carefully integrated to oplimize hydraulic performance and facilitale sealess transions belween realment slages. During construction, engineering support was provided to ossure the successlul implementation of the design. This Included reviewing contracior submillals lo confirm edherence to project specificalions, responding to Requests lor Information [RFls) to address technical inquiries, and conducting weekly sile vills lo monitor consuction progress and verify quality control. Regular porticipalion in consiruction meetings allowed for effeclive stakeholder coordination, proactive resolution of challenges, and alignment with project objeclives.
ENGINEFRING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT 15 ^ ARDURRA GASEOUS CHLORINE TEED SYSTEM TO HOUD HYPOCHECITE FEED SYSTEM
RICHARD KENNEDY, PE
SENIOR PROJECT ENGINEER
EDUCATION In his 51 years of experience, Richard has monaged the design of more than i5 new and retrofil pump * BS, Mechonical
Engineering, Colifornia station projecis ranging in size from 400-gpm lo over 400-MGD, with various lypes of pumps and Polylechnic Stote clive configurations. He has monoged the design of new and retrofit water trealment plant projects.
University, San Luis He specializes in mechanical process equipment of all types, piping, and valves. He prides himself Obispo, CA
in working closely with his clients, and ensuring the design team understands the critical issues of the
LICENSES &
praject. He is dedicated to delivering delailed and quality bid pockages. He effeclively manages
REGISTRATIONS
Professional Mechonical project budgels, schedules, and risks and continually finds ways to minlmize construction and Engineer, CA No. 18710 operalional costs.
PROFESSIONAL New Well Heod Design for Well No. 4 | City of Huntington Beach, CA
ASSOCIATIONS
* American Waler Works Project Manager. The project consisted of providing final design plans, specifications, and cost Association (AWWA), eslimate for upgrading Well 4 including a new well head, new eleciric FD pump motor, with VFD • Califomio Walet Pollulion Starter, de-sander equipmen, a new building lo accommodale the new equipment, replace above Control Associalion
and below ground dischorge piping leading to the Peck Reservoir, new control valve Cla-Val or Water Environment
Federalion equivalent) lo maintain well pump backpressure and reduce pressure lo Peck Reservoir, and piping connections for lerminolion of on-sile generaled (OSG) chlorine and liquid fluoride injection lubing
YEARS OF EXPERIENCE
• 12 will Ardura provided under the OSG project for Wells 4, 7 and 13. • 51 Total
Ground Water On-site Chiarine Generation and Fluoride Saturation Systems | Ciry of Huntington Beach, CA
Project Manager. The project consists of preliminary design and final design services for the removal of existing gaseous chlorine and liquid fluoride systems, and design of all new sodium hypochlorite generation syslems ond sodium fluoride saluralion syslems for hree separate wells averaging 7,600 gpm each. Split faced CMU buildings were provided to house the new generating focillies. The on-sile chlorine generalion systems fealured pneumall sodium chloride sall conveyance, waler softeners, chlorine generaling equipment, three-days of liquid sodium hypochlorite slorage, and included melering pumps and aulomaled controls for each well. Each fluoride system included slorage of 40lbs bags of NoF sall, water soflening, packaged Naf solvalor and included melering pumps and automaled controls.
Lester J. Berglund Water Treatment Plant, Chemical Building, and Tank form Upgrades | Santa Clara Valley Water District, Son Jose, CA Project Manager. The project consisted of routed chemical piping from new luoride melering pipe area lo injection point at East ond West Filler Gallery locations. Rouled double containment piping through congested pipe Irench, across existing fillers and along gallery wall to existing injection localion. The design of the injection point included rouling chemical piping in congested localion which required leak deleclion sensor piping and new specificalion of a new Hostelloy injection quill.
Addiional services included design of an HVAC system for the fluoride metering pipe area.
ENSINEFRING DESIGN SERVICES FOR CHOPINE CONVEESION PROJECT 16 ^ ARDURRA GASEOLS CHIOPINE FEED SYSTEM TO HIQUID HYPOCHIORITE FEED SYSTEM Miramar Water Trealment Plant Clearwell Improvements | City of San Diego, CA Project Manager. The project consisted of the design of a 215-mgd low lift pump station and chlorine contact champer. The realment plant had two issues in need of resolulion. One, a recent upgrade to the plant included o new ozone syslem functioning as the primary disinfeclant, but to allow the conventional downstream gravity filters to go biological to further reduce TOC in the treated water, the CDPH required that emergency chlorine disinfecling facillies be provided. Two, al high flows and high levels in the on-sile clearwells the plant's 215-mgd design copacily could be limited to only 80-mgd even when peak distribulion demands could reach 260-mgd. The solution was twofold, first, designing downstreom of the fillers a 2-MG dual-train concrele chlorine contact chamber (CCC) -each train equipped with concrete wall baffles and 72-inch venturi melers and accompanying modulating control valves. SCADA disinfection CT calculations were used to vary the water surface elevalion in the CCC to assure compliance with CDPH CT requirements al all flowrales, while of the some lime minimizing pump stalion energy usage, accommodating gravity flow withoul pumping lo flows up lo 170-mgd. The second part of the resolution was the installalion of 215-mgd low lill pump slation belween the fillers and the CCC consisting of a 4 duly and 1 slandby configuration ulilizing VFD driven verlical propeller pumps controlled lo keep the wet well woler surface low enough so the fillers could continually match distribution demands including 215-mgd when the clearells are at the highest levels.
Twin Oaks Valley Water Treatment Plant | San Diege County Water Authority, CA Project Manager. The project consisted of providing contract administration as part of the $158 million Twin Oaks Valley WTP DBO project. The effort included third-parly engineering design review for the more than 700 drawings and full six-volume set of design specificalions. Developed the review process for all the design documents including the basis of design report, preliminary design, 60% design, and final design documents. Phase IA The existing 35-MG Earl Thomas reservoir wos demolished and replaced with a new 35-MG pre-stressed concrete reservoir, the world's lorgest of its type of the lime.
Phase Il This phose of the expansion provided two new flocculalion/sedimentation basins raled al 50-mgd each ulilizing 3 slages of paddle type VFD driven flocculalors, and plastic chain and fight equipment combined with lelescoping valves for sludge removal. Each floc/sed bosin is nearly 100-fcet-wide and well over a football feld in length, al over 440-feel, wilh a depth of aboul 20-feel.
Phase Ill This phase of the exponsion included complete rehabilitation of two existing 50-mgd double decked flocculation/ sedimentation basins. Flocculalion arrangement was changed from a serpentine paller lo 3 distinct stages of flocculation utilizing horizontol paddle type VFD driven flocculators.
Phase IV This last phase of the expansion won ASCE's nalional project of the year award in 2013, lop prize of all civil engineering projects. This phase included a 200-mgd ozone syslem consisting of 4 ozone contactors, four 1000-pound per day ozone generalors and included a new concrele, three level, 300' X 80 ozone building and a 200-mgd ozonaled sellled waler pumping stalion ulilizing for the first time ever propeller pumps lo move ozonaled sellled water to filralion facilities.
Orange County Sonilation District Disaster Preparedness Plan | Orange County Sonitation District, CA Project Engineer, The 400-page preporedness plan contained of specific mechanical sections, including: 1.) Inventory of cily water equipment, ralural gas equipment, emergency fuel storage and emergency generaling equipment; 2.) Earthquake vulnerability onalysis; and
3.) Risk reduction programs.
Cest Analysis of the Lo Salina Wastewoler Treatment Plant Options | City of Oreanside, CA Projeci Manager. The project consisted of the effort lo evaluate allernalives ossocioted with the future of the Cily's the la Saling Wastewaler Trealmen Plani. Alternalives evalualed include: 1) upgrading the plant, 2) replacing the plant with a membrane blo-reactor (MBR), and 3.) replacing the plant with o pump station lo move waste water lo the Cily's San Luis Rey freciment facilily where it could be realed lo reclaimed water standards and distribuled to customers. Alternative 3 was the recommended.
Rosarito Beach Bi-Notional Desalination San Diego County Water Authority, CA Project Manager. The project consisted of providing the feasibility study of a bi-nolional seawater desalinalion facility. The facilily, when constructed, would provide 25-50-mga of desalinaled seawater to waler utilities in the Rosarllo/Tiluana, Mexico and soulhern Colifornia.
ARDURRA ENGINEETINC DESIGN SERVICES FOR CHIONINE CONVERSION PROFE
GASEOUS CHIORINE FEED SYSTEIA TO LIQUID HYPOCHLOPITE FEED SYSTEM Water Treatment Plant Expansion | City of Folsom,
Project Manager. The project consisled of upgrade the City's water leatment plant, The project included decommissioning 25-mgd of existing aulomalic backwashing (ABW) filters and converting four existing floc/sed basins to filler backwash and Acliflo blowdown treatment, modifying the existing conventional fillers (20-mgd) and providing ond additional 30-mgd of convenlional flotion, adding a 1.2-MG circular pre-siressed concrete chlorine contact lank, and adding a new hypochlorile generator. Capacily of the plant increased from 40-10 50-mgd. Specific modificalions lo the existing fillers included a new filter-lo-waste (FTW) piping arrongement to correct a polential cross- connection problem.
idvanced Natel r Treatment Plant | City of Son Diego, CA Design Manager. The project consisted of providing the 30% design level documents for converting wastewater lo drinking water. Facilities included 22-mgd pump station, microfiltration ond reverse osmosis buildings, ion exchange, ozone, process chemical, disinfection, and water stabilization structures.
Pumping Station Wet Scrubber Odor Control | City of San Diego, CA Project Manager. The project consisted of the 13,000-clm H2S odor control wel scrubber for a 32-mgd sewage pumping slation.
Digester Heating and Mixing System Replacements | County Sanitation Districts of Los Angeles County, CA Project Engineer. The project consisted of the healing and mixing systems for two 65-fool-diomeler digesters:
Design of Long-Term Chemical Facilities Robert F. Diemer Filtration Plant | Metropolitan Water District of Southern Callfornia, CA
Project Manager. The project consisied of the 560-c/s, 5,000-horsepower mixed flow pumping station including buried 114-inch and 84- inch bullerfly valves vaults.
Diemer Be ping Station | Municipal Water District of Orange Courty, CA Project Engineer. The project consisted of the 560-cls, 5,000-horsepower mixed flow pumping stalion including buried 114-inch and 84- inch buttery valves vaults.
Flow Control Facility D106/07 | Municipal Wafer District of Orange County, CA Project Engineer. The project consisted of o 07-cls, 29-foot by 60-fool underground flow control lacliy.
Flow Control Facilit · ST-04 on Enlargement | Municipal Water District of Orange County, CA Project Engineer. The project consisted of a 20-cis flow contral facility.
Water Factory 21 Expansion Project | Orange County Weter District, Cl Project Engineer. The project consisted of providing preliminary design including establishing design criterio and concepts for facility expansion including increasing RO copocily from 5- to 25-mgd.
Santa Margorita Pumping Station | Santo Margarito Water District, CA Project Engineer. The project consisted of on Interim 600 horsepower, 15-cfs Pumping Station.
River Meunlain Pumping Station and Fosthills Pumping Station | Southern Nevado Water Authority, NV Project Engineer. The projec consisted of the surge control system and related hydraulic valve acluctor control systens.
ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSIO PROJECT - 18 ^ ARDURRA GASEOUS CHIOSINE TED SYSTEM TO LIQUID HYPOCHORITE FEED SYSTEM CHANG YE, PhD, PE, PMP, CPE, QSD
DESIGN ENGINEER
EDUCATION Chong Ye has been gaining industrial experience in civil engineering since 2005. He has designed • PhD, Civil Engineering,
Missouti Universily of and managed over 200 civil infrastruclure projects in Southern California, Including polable waler Science and Technology. reservalis; waler wells; pump and lift stations; waler, sanitary sewer, and recycled water pipelines; Rollo, MO stormwaler dranage syslems; trealment facilties; on-sile treatment systems; airparls; roilroads; and • MS. Applied Ecology
Chinese Academy of site gradings and developments Chang's experlise includes developing Plans, Specifications, and Sciences, Beljing, China Estimales and bid documents; providing construction management and support; developing water, • BS, Environmental
Engineering, Zhejiang sewer, and recycled water system models with vorlous modeling lools and GIS; conducling hydraulic Agriculural Universily, and hydrology analyses; preparing various moster plans and emergency response plans; developing Zhejiang, China Stormwater Pollution Prevention Plan, Low Impact Development, Water Quality Management Plan, LICENSES & and various environmental compliance programs and reports; and assisting in developing standards
REGISTRATIONS
and specifications for agencies.
• Professional Civil Engineer,
CA No. 6876l Anita B. Smith Water Treatment Facility On-Site Chlorine Generation and Delivery • Projeci Monogement
Professional (PMP), No. Syste ux Community Services District, Jurupa Valley, CA 3709402 Project Engineer. The Anito B. Smith Water Treatment Facily, a nitrate and perchlorate removal * Cerlified Professional
and water disinfection facility, required a new disinfection system to replace its aging infrastructure Estimalor (CPE), CA No.
310000-191-0919 for enhonced reliobilily and dosing flexibility. The project included piping and electrical modifications • Qualified SWPPP to integrale the new system while maintaning facilily operations during construction, necessitaling a Developer (QSD), CA No.
68761 temporary relocalion of the existing chlorine system. As Project Engineer, Chang designed the planned improvements, which included temporary facilies, the demolition and salvaging of the existing chlorine
PROFESSIONAL
ASSOCIATIONS generalion system, the installation of a new chlorine generalion syslem, the consiruction of a double- • American Saciely of containment chlorine solulion siorage facility, piping and electrical modifications, and a new brine Professional Estimalors
saturalion lank concrele pad.
[ASPE]
American Water Works San Jacinio Valley Regional Water Reclamation Facility Erosion Mitigation Association (AWWA]
(Woter Moin Rehabilliation Improvements | Eastern Municipal Water District, San Jacinto, CA Commillee: Waler Reuse Project Engineer. This project involved improving the drainage system af the San Jacinto Valley Commillee; Inorgonic Regional Waler Reclomation Facility to miligale erosion and flooding. The scope included re-grading Contominanis Research-
Committeel the entire facilly area, consucting a new detenlion pond, and adding several drainage ditches.
As Project Engineer, Chang conducted the preliminary and final designs, prepared grading plans,
YEARS OF EXPERIENCE
1 with Ardurra and developed detailed specifications lo assure ellective drainoge sclulions ond enhanced facility 21 Tolcl resilience.
Trussel Plant Project, Site Improvements | Golden State Water Company, City of Sacramento, CA
Lead Engineer. The Trussel Plant projec! involved the design ol a new 0.4-milion-gallon welded steel reservoir, on on-sile disinfection facility with o housing building, a 1,000-gpm potable groundwaler well with disinfeclion capabiliy, and a 3,000-gpm boosier station equipped with three ENGINEEPING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT - 19
ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LIQUID HYPOCHIORITE FEED SYSTEM 500-gpm pumps and one 1,500-gpm pump. As the Lead Engineer, Chong was responsible for designing the pump facility, disinfection system, water and chemical piping, groding, drainage, and comprehensive sile improvements, ensuring funclionalily and compliance with project requiremenis.
Backcountry Reservair | Santo Clarita Valley Water Agency (SCVWA), Santo Clarito, CA Project Engineer. This project involved the design of o 9-million-gallon (MG) reinforced concrele reservoir to increase potoble waler slorage for the SCWA's western service area. The reservoir spans approximalely 120 feel in width and 300 leel in lengih, with a below- ground depth of 30 feet and an above-ground height of around 17 leet. The developed site features a disinfection trea ment facilily, a chemical slarage building, a 20-fool-wide drivable access road, galed entry, perimeler fencing, site drainage fealures, control systems, valving, landscaping, and olher essential appurtenances. As the Project Engineer, Chang played a crucial role in the design of the reservoir, yard plping, and chemical trealment sysiem.
Rienda Zone I and Zone A Interim Water Fazilities | Roncho Mission Viejo, CA Lead Project Engineer. This project encompassed the design of Iwo 1-MG polable water lanks, a recycled waler pond, approximately 3,700 linear feel of 24-inch domeslic violer line, 3,400 linear feel of 24-inch recycled waler line, access roads, and sile improvemenls. As Lead Project Engineer, Chang contribuled to the chemical trealment system design, performed quality control for the full set of plans, and updated specificalions and cost estimetes, ensuring the projeci met lechnical, operational, and regulatary standards efficiently.
Well No. 41 and Well No. 56 PFAS Treatment System Preliminary Design | City of Anaheim, CA Project Engineer. The City of Anahein proposed utilizing lon Exchange syslems to mitigale delected levels of PFAS chemicals in groundwater. This study aimed to verify conceptual site layouts for PFAS trealment systems at Wells No. 41 and 56. As Project Engineer, Chang conducted site invesligalions, developed preliminary sile and demolition plans, and prepared cost eslimales, ensuring the feasibilily and efficiency of the proposed Ireatment system layouts.
Well No. 13 Sile Impr upa Co unity Services District, Jurupo Valley, CA Project Engineer, Jurupa Community Services Distric's Well No. 13 Site Improvements Project involved demolishing the existing facilities, installing a new chlorination syslem, a new deep well pump and molor with a motor control center, on-site electrical, on on-sile piping and pump-lo-wosle structure, installing a new emergency standby gensel, constructing a new chlorination building, site grading, and paving.
Chang served as the Project Engineer to design the pump head, waler piping, chlorinalion system, genset, ond sile grading. The chlorination syslem design included chemical piping, an injection facilily, a lank facility, secondary containment, and a chemical loading system.
2.4-MG Orange Heights Zone 6 Reservoir | Irvine Ranch Water District (IRWD), Orange, CA GA/QC. The Orange Heights Zone & Reservoir Project involved designing a 2.4-million-gallon prestressed conciele lank, fully buried with access roads, a reservoir management system, and associaled infrastructure to enhance waler storage and distribution for IRWD. Key components included reinforced concrele foundalions, roof structures designed for vehiculor loods, reservoir mixing syslems, chemical feed syslems, and pipeline connections for inflow, oufflow, and overlow. The project also incorporaled advanced water quality monitoring sysiems and adhered lo slingent regulatory and environmental standards. Chang played a pivotal role in conducting quality control of the design plans and specificalions, ensuring alignment with IRWD slandords and project objeclives.
Sepulvedo Feeder Pump Stations | Metropolitan Water Districi (MWD) of Southern California, Las Angeles County, CA
QA/QC. The Sepulveda Feeder Pump Stalions projecl, underlaken by the MWD of Soulhern California, enhanced water delivery reliabilily o the westein service area during drought condillons or supply interruplions. Il involved the construction of two pump stalions at the Venice and Sepulvedo sites, capable of handling up lo 30 cubic fet per second (cfs) in he initial phose, with a future capacity expansion lo 160 cfs. Key components included horizonial split-cose pumps, variable frequency drives, surge proleclion systems, chemical dosing facililies, and advanced electrical and control systems. The project also Integrated below-grade vaulls housing Rowmelers and isolation valves, a new concrete water storage tank, and upgrades lo the Sepulveda Feeder Pipeline. Chang played a crilical role in addressing design comments from the MWD, ensuring that design issues were resolved and the Basis of Design Reporl was effeclively updated. He also contribuled to the project's success by providing qualily control over key design consideralions, ensuring complionce with engineering standards and projec! requirements.
TOXICO ENGINEERING DESIGN SERVICES FOR CHIORIN! CONVERSION PROJECT - 20 ^ ARDURRA GASEOUS CHIOFINE FEED SYSTEM TO HOUR FOCHLOETE FEED SYSTEM
STEFANOS WORD, PE, ENV SP
PROCESS DESIGN
EDUCATION Stefanos Word is a senior engineer and water trealmen technical lead experienced in the • MSES, Civil & optimization, planning, design, and construction of advanced groundwater trealment and surface Environmental Engineering
Universily of the Pacific, water trealment facilities. His project experience includes ion exchange, desalinalion, air stripping, Stockion, CA pressure filtralion (VOC and inorganics removal), conventional physical-chemical trealment processes, • BS, Civil Engineering, and chemical storage/injection facilities. His project experience also includes instrumentation and University of the Pacific,
Stockion, CA controls design for large- and small-scale facillies. His experience also includes stale- and federal permitting, field collection of dala, piloting, and starlup of treciment facillies. He enjoys working
LICENSES &
collaboratively with agencies lo provide cost-effeclive and crealive solutions to woler quality
REGISTRATIONS
• Professional Civil Engineet, challenges for communities across Colifornia.
CA No. 93865
• Envision Sustolnobilily Torrance Refnery Weter Reeycling Plant | Wesl Basin Municipal Water District, Professional (ENV SP), No. Carson, CA
18683 QA/QC Manager. The project consisted of providing condition assessment and planning services PROFESSIONAL for Wesl Basin Municipal Water Distric's bulk chemical storage and leed systems of the Torrance ASSOCIATIONS Refinery Water Recycling Plant. The project included evalualion of 13 chemical systems associaled • Amerioon Waler Works
Association (AWWA), with the facility's nitrification and MF/RO realment processes, including sodium hypochlorile, sodium Califonia-Nevado bisulfite, sulfuric cid, sodium hydroxide, citric acid, RO CIP chemicals, and ihreshold inhibitor systems.
Section (Water Treatment
Working with Pacific Engineering, MKN performed a comprehensive assessment of tonk integrily.
Commillee Secretory)
associaled mechanical, alectrical, controls, siructural, containment, safely, and operability conditions
YEARS OF EXPERIENCE
1o delermine remaining useful life ond identily deficiencies affecting reliability, safely, and long-lem * 7 with Ardurra
• 9 Tolol mainlainability.
Surface Water Trealment Piant | Meiner's Ooks Water District, Venturo, CA Project Engineer and Process Technical Lead. The project consisled of plonning, design, and construction of a 1.0 MD surface water realment facility trealing groundwater under the influence of surtace water through direct filiation lechnologies with chlorine gas, sodium hypochlorite, coagulant, and provisions for ammonia sulfale storage ond injection lacilities. Prepared Design Direction Technical Memorandum, consiruction plans, specificalions, and cost estimates for process/mechanical and instrumentation/controls design disciplines.
Surface Water Treatn Plani Upgrades | City of Coalinga, CA Process Technical Lead and Project Manager. The project consists of planning, design, and consiruction of upgrades to the Cily's existing 12.0 MGD conventional surface water treatment plant.
Consists of improvements to the row waler inlake screens, rehabilitation and mechanical improvemenis of the existing flocculalion and sedimentalion basins, replacement of fliralion media (anthracite, nd, gravell, design of new filler underdrains and air scouring systems, insirumentalion upgrac the exisling wash waler equalizalion basin, sludge drying bed improvements, wash waler supp
FOR CALEXICO ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT ^ ARDURRA: GASFOUS CHLOEINE FEED SYSTEM TO HOUID HYPOCHLORITE FLED SYSTEM 21 improvemenis, and design of a new sodium hydroxide siorage and injection locility. Provided technical guidance on process losks and prepared lechnical memorandum, construction plans, specificalions, and cost estimales for process/mechanical, civil and insirumentalion/ controls design disciplines.
Sycamore Water Treatment Plant | Atascadero Mutual Water Company, Atascadero, CA Project Monager and Process Technical Lead. The project consists of planning, design, and construction of an 11.3 MGD groundwater treatment facility designed to use GAC lo reduce short- and long-chain perflourinaled compounds and hydrogen sulfide concentrations below Stale-mandaled response levels. Piloted AC and ion exchange lo determine process applicability and refined cost eslimoles and deep bubble aeralion technology lo reduce lead and copper corrosion within the distribulion system. Designed piloting facillles, prepared lesling prolocals and conducted pilot tesling for GAC, ion exchange, and deep bubble aeration techrologies, conceptual and basis of design repors. Facility include 20,000-pound GAC adsorplion vessels, a prestressed concrete clearwell, high-service product water pump slalions, surge control infrasiructure, chemical storage and injeclion lacilities, motor control center/electrical room, operalions center, and securily syslems. Provided lechnical guidance for process design and Prepared Preliminary Engineering Reports, construclion plans, specifications, and cost estimoles for process/ mechanical and instrumentation/controls design disciplines.
Well 22 EIR Support | City of Merced, CA
Project Engineer. Projeci consisted of developing supporting willty review and planning documents lo on Environmental Impact Report (EIR) prepared by ISA & Associates. Evalualed exiling site layou, Water Master Plan, Miligated Negalive Declaration, and provided recommendalions for connecting the proposed Well 22 to the Cily's distribution system. Coordinated with key City Staff lo determine preliminary design crileria for lulure well, tank, and boosler pump stalion facillies. Developed preliminary sile design.
Brackish Water Desalination Facility Improvements | Port Hueneme Water Agency, Port Hueneme, Project Engineer, Project consists ol planning, design, and construction of upgrades to the PHWA's existing 5.0 MGD brackish water desalination facility. Scope of work currently consists of designing improverents lo the existing bog fittalion system (replacement with cartridge filters). Previously conducted an operalional audil/condition ossessment hal culminated in the development o' capital improvements project list that consists of the following: rehabilitalion and mechanical improvements of the existing nanolitation and reverse osmosis trains, replacemen al membranes, design of a third slage brine concentration train to increase the overall recovery of the facility lo grealer than 95 percent, design of a new direct bypass-and blend lacility that directly blends row water wilh product water al the pump sialion discharge, clean-in-place syslem improvements, and design of minor civil- and process-mechanical improvements around the fociliy. Oversow preparation of third stage brine minimizalion piloling prolocols, pilol operalion/dala collection, and preparalion of piloling resulls report.
Provided lechnical guidance on process lasks and prepared technical memorandum, construction plans, specifications, and cost estimales for process/mechanical, civil and instrumentalion/ controls design disciplines.
Welle 14 and ló Hexavalent hromium Treatment Facilities | City of Vacaville, CA Process Technical Leader/Design Manager. The praject consists of planning, design, and construction of 2,4-and 2.8 MGD reduction-coagulation fillration lacilities for Wells 14 and 16 (respectively) with reduclion contactors, filtration realment iroins, a ferrous chloride storage and injection facillly, and modificallons lo the existing fluoride- and sadlum hypochlorile storage and injeclion systems for removal of hexavalent chromium from groundwater. The primary goal of the facilily was lo reduce the hexavalent chromium concentrotions of each well below stole the-mandaled maximum contominant level of 10 pg/L Evalualed reverse osmosis, strong- and weak base onion exchange and reduction-coagulation fliralion with traditional pyrosulsile advantage- and Waleropolis Cerapure medias as feasible contaminoni reduction siralegies. Prepared Basis of Design Repori, construclion plans, specificalions, and cost estimales for process/ mechonical, civil, electrical, ond instrumentalion/ controls design disciplines.
ENGINEERING DESION SERVICES FOR CHORINE CONVERSION PROJEC! - 22
ARDURRA GASEOUS CHORINE FEED SYSTEM TO HOUID HYPOCHLORITE FEED SYSTEM RAJ CHAVAN, PhD, LEED, PMP, PROCESS
PROJECT ENGINEER
EDUCATION With over 20 years of experience in civil and environmental engineering, Roj speciolizes in water and * Doctorale in Civil and wastewater trealment praclices, focusing strongly on sustainability, resilience, and climale change Environmentol Engineeting.
Universily al Nevada, adoplolion. His expertise extends lo the One Waler approach, integrating water reuse, conservation, Reno, NV and environmental slewardship into every project. Skilled in hydraulic and process modeling, Raj * MS, Civil and designs ond retrofits waslewater treatment systems, with experlise in Biological Nutrient Removal (BNR) Environmentol Engineering,
University of Nevada, Las and advanced realments such as intensification/densification processes for nuirlent removal and Vegos, NV beneficial reuse.
• BS, Slyvaji University, Raj, a detail-oriented professional with high slandards, is dedicaled to leaching and mentoring Kolhapur, India
younger staff, conlinuously improving engineering melhods to prevent errors, enhance safely, conserve LICENSES & energy, and reduce construction and operalional costs. His commitment to sustainability and client
REGISTRATIONS
• Professional Engineer AK solisfaction drives every project. Raj has published and presented over 80 technical papers and No. C 123.50 holds leadership roles in professional organizalions, including the Waler Environment Federation and • Professional Engineer NV WaleReuse.
No. 019021
• Professional Engineer UT Improvements and Expansion to Corolina Regional Wastewater Treatment Plont No. 11119995-2202
(CRWWTP) | Puerto Rico
• Professional Engineer TX
No. 139572 Project Technical Lead. CRWWTP is a primory wastewater treatment plant with a treolmen! • Profess onal Engineer AZ capacity of 45.0 MGD average daily flow and peak flow of 90.0 MGD. The project included No. 70572 improvements to all the processes including lo headworks, primary trealment, secondary treatment, * Professonal Engineer NM disinfection, sludge handling, process water system, sile civil improvements, and effluent disposal. As No. 26144
part of this projeci to improve the solids handling, new Gravily Sludge Thickener [GST - 82 ll diameter • Professional Engineer ID
No. 19935 and 14 it side waler deph along wilh ancillary processes was proposed and designed to handle • Professional Engineer solids generaled from 45 MGD Now.
Puesto Rico No. 28506
Profossional Engineor Fl Cadence Sewer Lift Station Design Services | City of Henderson, NV No. 93283 Technical Advisor. The City of Henderson identified the existing Tuscany Lift Stalion as having • LEED Green Associale No. Imiled capacity to serve addilional Cadence communily build-out areas and selecled Aikins lo 10624368
prepore a preliminary design report to finalize the sile location, configuralion, service area, and * Project Management
Professional (PMP)® wastewater contributions. MY responsibilities include the design on pumps and hydraulics ae done No. I50o6ll, Project properly, review calculations, layouls, dewatering is properly estimated. I reviewed construclion Monagement Inslitute
drawings and specifications.
Dissolved Air Flotation Thickener 5 Design Services | Clark County Water Redomation Distric, NV
Technical Advisor/QA/QC. This projeci consists of facility improvements lo meet a hydraulic reatment capacily of 150-million-gallons-per-doy average onnual flow by 2025 and delermined that a new DAFT with a 60-foot overall diameler and a 12-fool side waler depth is required of the central realmeni facility lo meel this hydraulic capacily. Aikins' scope includes geotechnicol evaluation, CORE ENGINEERING DESIGN SERVICES FOR CHIOTINE CONVERSION FROJECT • 23
ARDURRA GASEOUS CHORINE FEED SYSTEM TO LOUID HYPOCHIORITE FEED SYSTEMS PROFESSIONAL including a dewalering sludy, structural design, a reliability-cenlered design study. capocity evaluation, ASSOCIATIONS and other technical crileria sludies.
• Americar Society of Civil
Engineers (ASCE) Walnut Creek Wastewater Treatment Plant Scrubber Renewal Final Design Services Nevada Water Environment
| City of Austin, TX
Associotion
Water Environment Federalion Technical Adviser/Reviewer. Services Include final design and project management for the * Internalionol Waler rehabilitation, addition, and replacement of the water and wastewater trealment plant, bio-solids Associalion realment plonts, woslewaler lift stations, and water and reuse pump station reservoirs. • American Waler Works
Associalion (AWWA) West Secondary Treatment Expansion to 150 mgd, Flamingo Woter Resource Center YEARS OF EXPERIENCE (FWRC) | Clark County Woter Reclamation District, Los Vegas, NV • I with Ardurro Project Technical Lead. The project includes the expansion of secondary treatment from 120 mgd * 20+ Total to 150 mgd al FRC. The design includes three ceralions basins (10 mgd each), secondary clorifiers {140 fl diameter), blower and elecirical building, expansion of secondary effluent box (280 mgd), pilol lesting bed for evalualing any new lechnologles and mode of operation, and related components. Raj's responsibilily included reviewing and advising on design and construciability with respective planning and design criteria, exiling focilities, design calculations, capacity evalualion madeling, integrily of the project, all discipline coordination, qualily of the project, budget, schedule, elc. I also includes reviewing design calculations, construclion drawings, and specifications for the projects al various slages, including preliminary, final, and bid documents.
Kingwood WWTP - Preliminary Design Expansion | City of Houston, TX Technical Advisor/QA/QC. The project includes the evaluation of the consolidalion of three different wastewater facillies (total capacily 10 mg) and mitigation alternalives for the wastewater facilities in the Kingwood service orea. Also, evaluale several different realment allernatives and recommend the best alternalive and proceed with preliminary design, and develop 30 percent design documents. Roj's responsibilities include advising and reviewing process models, realment altematives, and prelimingry design and providing quality control on the design documents.
Spanish Fork/ Mapleion WRF - Plant Design Expansion and Retrofit | Spanish Fork City, UT Technical Lead. The project includes design of 12 mgd flow MBR plant, includes design of headworks, secondary treatment, UV disinfection, solids hondling, equalization basin, and permitting. Roj reviewed ond analyzed process operalion data, established process design criteria, developed process model to meet coming stringent nitrogen and phosphorus limits. The project olso includes design of retrofil and expansion of their solids handling lacility (including thickening, sludge holding lanks, dewalering loclity, digeslers rehob). Raj reviewed and analyzed process operation dala, established process design criteria, and manage mulli-disciplinary group lo produce Bid documents for the expansion.
Waslewaier Facil y (WWFP) Phase I Expansion | City of W 0, NV Process/Project Engineer and Project Manager. The realment facilly will be 3.5 mgd peak flow, with the expansion replacing the exisling influent pump station, a new 5.0 miles force main, new headworks, secondary realment, solids handling facility, rapid infilration basins, and supporling facillies. Raj was responsible for developing design crilerio, coordinating design with other leam members, performing hydraulic and design calculations, performing pracess modeling, preparing plans and specificalions for expansion, and engineering services duing bid and construclion. He was also involved in the stort-up of the facility.
Water Redamation Facility Expansion (4 mgd) | Reno Stead, City of Reno NV Project/Process Engineer/Reviewer. The project includes expansion of 2 mgs WWTP to 4 MGD expansion projects and project also includes reuse through the pilol lesting of ozone coupled with biological activated carbon (BAC) for advanced Ireatment of the effluent lor indirect polable water reuse. Raj pertormed design calculalions ond assessment for the impoct of influent/elfluen/Solids discharge from RSWRF to Truckee Meadows WRF. Also developed engineering report summorizing my findings and provide recommendalions. In addilion, provided technical review on the process modeling for the expansion of the plant and delailed design (drawings ond specs).
SPECAN ENGINFERING DESION SERVICES FOR CHIORINE CONVERSION PROJECT 24
ARDURRA GASEDUS CHIDINE FEED SYSTEM TO LIQUID HYPOCHICRTE FFED SYSTEM
JACQUELINE (JACKIE) TAKEDA
DDW PERMITTING
EDUCATION Jacqueline (Jackie) Takeda has over 20 years of experience in waler quality, regulatory plonning, and • BS, Biological Sciences
oplimizing water system operallons. She specializes in devising regulatory compliance stralegies lo with Emphosis in
Neurobiology, Physiology, meel Colifornia Division of Drinking Waler requirèments, evalualing realment plant and distribution and Behovior, Universily of syslem performance, and identifying and Implementing process improvements.
California, Davis, CA
LICENSES & In addition to her water resources experience, Ms. Takeda has exlensive operat ons monagement REGISTRATIONS experience earned through her 12 years of employment with California Water Service (Col Waler).
Grade 2 Woler Treatment
This experience enables her lo develop reasonable solulions thal match a waler district's goals with Operator (CA Stale Waler
Board current best available technologies. Her experience also Includes helping small, mulual waler systems Glade 2 Water idenlily suslainable solutions. She is well versed in developing compliance stralegies and permilling Distribution Opetator [CA
Stale Water Boord) projects with the regulatory agencies such as the State Waler Quality Control Boords. • Cross-Connection Control
Specialis! (CANV North Kronenburg Water System | City of Bakersfield, CA AWWA) Project Manager. Serving as the Project Manager for a public water system hol was under a compliance order due lo 1,2,3-Trichloropropane (TCP) conlaminalion. Assist with developing
YEARS OF EXPERIENCE
• 9 with Ardurro a Feasibility Study lo evaluale realment and source ollernalives to bring the system back into * 21 Tolal compllance. Met with communily residents to present the study findings and gather leedback, Assist in ongoing correspondence wilh the Division of Drinking Waler (DW) lo provide project updales and assure regulatory requirements are mel.
Mustang Mutuci Water Sy of Bakersfield, CA
Project Menager. Serving as the Projeci Manager for a public water syslem that was under a compliance order due la 1,2,3-Trichloroprapane (TCP) contaminalion. Assist with developing a Fegsibility Study lo evaluate trealment and source allernalives to bring the system back into compliance. Will conduct a meeling with community residents lo present the sludy findings and gather feedback. Assist in ongoing correspondence with the Division of Drinking Water (DDW) to provide project updales and assure regulalory requirements ore met.
Update DWR P2426 Facility STIDs to FERC Guidelines Calffarnia, C Task Order Manager. Serving as Task Order Manager in support of the California Deporment of Water Resources (DWR) for the development and completion of Supporling Technical Informalion Documents (STIDs) for Slate Waler Project dams under FERC Projact No. 2426. Responsibillies Included project management lasks such as maintaining regular communication with DWR lo report pragress, developing and updaling project tracking spreadsheels for each of the four facilities, and coordinaling with internal technical staff to complete various seclions of the STIDs. Also worked closely with the formaling editor to compile and finalize complete STID documents lor submillal.
CAPPED ENGINEERING DESIGN SERVICES FOR CHIDRINE CONVERSION PROIECT •
ARDURRA GASEOUS CHORINE FEED SYSTEM TO HOUID HYPOCHLORITE FEED SYSTEM Update, Develop, and Complete Supporting Technical Information Documents | Department of Water Resources - Division of Operations and Maintenance, CA
Task Order Manager. As the Task Order Manager, provide project management support and coordination with projec! team to update, develop, and complete Supporting Technical Information Documents (STIDs) for FERC regulated P2426 lacilties: Cedar Springs Dam, Devil Canyon Power Facilly, Pyramid Dam, and William Worne Power Development. Conduct biweekly project stolus meetings with DWR and weekly internal project stalus meelings with sialf. Prepare monihly project status reports for efforts including assigned projects and status of ongoing tasks. Review and provide QA/QC review of deliverables to DWR. Coordinate assignments with DWR and internal sloff.
Evaluation of Re-Using Drinking Woter Treatment Plant Waste Stream for Ag Irrigation | Orange Grave RV Park, City of Bakersfield, CA
Task Order Manager. Evaluated the best drinking water treatment option where the selecled treatment option would bring the woler system into compliance with the nitrate drinking water standard and would also be cost-effective lo re-use the treated waste stream for irrigolion. Tharelical blending calculalions were performed to determine the feasibility of re-using the realed wasle stream. Worked with Universily of Callfornia Division of Agricultural and Natural Resources (UCAR) lo delermine the water quality hresholds of irrigalion water for citrus crops. Worked with regulators within Division of Drinking Waler (DW) and Central Valley Regional Board (Regional Boord) to permil o drinking waler Reverse Osmosis treatment plant (RO) and re-using the RO reject water to blend with Arvin-Edison waler. The blended waler will be used os irrigation water for the orange trees.
Addressing Water Quality Risks to the State Water Project, Willow Springs Water Bank | CIM Group, Antelape Volley, CA
Task Order Manager. Evalualed the waler quality risks to the Stale Waler Project (SWP) resulting from Della levee failures. Reviewed Californio Department of Water Resources (DWR) Jones Tract Flood Water Qualily Invesligations reporl to gain an understanding of the water qualily impocts that were documented from the 2004 Jones Tract levee oilure. Assisled with developing the technical report that identified delta levee foilures and the emerging conlaminant issues lo demonstrale the public health benefit the Willow Springs Waler Bank can provide through ils proposed water banking expansion project.
Reuse Conversion Study | Moulton Niguel Water District, Aliso Viejo, CA Senior Water Quality. Serving role of Senior Woter Quality specialist in identifying options to maximize use of recycled waler produced from Regional Wastewater Treatment Plant (RTP) to diversily Distric's water supply portfolio. Conducted water quality onalysis from RTP and evalualed against existing Waste Discharge Order Permit and San Diego Basin Plan Waler Qualily Objeclives. Evaluated feasibilily of Direct Potable Reuse (DPR) using laguna Niguel Lake Reservoir. Assisling with developing potential perilting pathways with DDW and Regional Water Qualily Control Board for DPR project.
Regulatory Planning and Dr vising Compfionce Strafegies | Californio Water Service (Cal Water), Task Order Manager. Drinking waler regulations roulinely updated and impact municipalities salewide. Examined the intent of new regulation, identified its polential impact on operalions, and developed plans to minimize negative impacts while assurirg all 27 waler systems will meet the slandords and intent. Planned regulalions lo include ongoing evaluations of primary and secondary drinking waler slandards, with exlensive experience in iron and manganese, tetrachloroethylene [PCE), trichloroethylene [TCE), Stage 2 Disinfectant/Disinfection Byproduct Rule; Groundwater Rule; Californio Waterworks Standards; Lead and Copper Rule; and the revised Total Caliform Rule.
Distribution Nitrification Issues | Colifornia Woter Service (Cal Water), Los Altos, Task Order Manager. Worked closely with operalions slalf lo undersland the complexily of the distribulion syslem, which was chloraminated. Some inilial improvements to lackle the nitrificalion issues wos lo improve their nitrificalion monitoring and to identify which lanks to force turnover more frequently. Provided addilional training lo operalions stall on nitrificolion and certain operalional strategies lo help he operators inlerpret the results they were oblaining.
CHOF CALICO ENGINEERING DESIGN SERVICES FOR CHIOPINE CONVERSION PROJECT - 26
ARDURRA GASEOUS CHIORINE FEED SYSTEM TO HOUD HYPOCHLORITE FEED SYSTEM CHARLES SMITH, AICP, LEED AP BD+C
ENVIRONMENTAL
EDUCATION Charles Smith is a resulis-driven environmental professional with over 30 years of experlise in impact MPI, Urbon and Regionol assessment for planning, development, and public works infrastructure projecis, including waler, Planning, Universily of
Southern Colifornio, Los wastewater, coastal, renewable energy, oil & gas, rail, and surface transportation. He is a proven Angeles, CA leader in project and program management, operations, business development, and professional • BS, Business Administralian, educallon. Charles possesses a deep knowledge of state and federal environmental regulalions, Universily of Soulher
Calitonio, Los Angeles, CA including CEQA and NEPA, as well as regulalory compliance, permiling, historic preservalion, and sustainable development. He is adept at managing as-needed contracts and task orders for public
LICENSES &
REGISTRATIONS agencies, ensuring efficient projec execution and compliance. • American: Inslilule of
Certified Plonners (AICP) Ames-Reche Recharge Facility Project 15/ MND | Mojove Water Agency, Landers, #011706, Americon
CA
Planning Association
Environmental Task Leader, Manged an IS/MND lo evaluale the polenlial environmental Americon Instilute of
Certified Planners (AICP) impacts associaled with the construclion of two new groundwater recharge basins in the County of #0I1766, Americon Son Bernardino. The project includes drilling of a monitoring well, and grading/earthmoving necessary Planning Associalion
• Leadership in Energy and lo construct the basins. Key CEA issues included cultural/ ribal cultural resources, and biological Environmental Design resources including the potential relocalion of Western Joshua Trees.
Accrediled Professional
(LEED AP) Building Design Deste Basins Groundwater Recharge Project Supplemental 15/ MND | Majove and Conslauction (BD+C),
US Green Building Council Water Agency, Pinen Hills, CA Environmental Tesk Leader. Monoging o Supplemental IS/MND lo evaluote the polential
YEARS OF EXPERIENCE
1 with Ardurra environmental impacts associated with modificalions to a groundwaler recharge project for which an * 36 Tolal IS/MND was previously adopled. The modificalions include replacing a lemporary siphon with a new permonent turnout from the California Aqueduct including a traveling screen facilily, ond a permonent pipeline lo convey State Water Project (SWP) waler to the Oeste Recharge Basin. Charles developed a standardized tabular structure in the Supplemental IS/MND to readily idenlily and compare impacts lo those previously assessed
Evergreen Mobile Home Park 123-TCP Mitigation Project Notice of Exemption i Self-Help Enterprises, Atwater, CA
Environmental Task Leader. Prepared a CEA Statulory Exemption to construci and operate a new 2,300 linear fool water main and laleral conneclion to Evergreen Mobile Home Park, along with a new pump stallon. The extension of the Clly of Atwater's water system is necessary to supply safe, polable drinking waler to the residents of Evergreen MHP. The Notice of Exemplion was prepared in accordance with SB131 for small, disadvantaged water and sewer systems, and included a detailed project descriplion, supporling memo, and technical studies for biological and cultural resources.
Chorles olso provided input for the environmental package needed to secure gront funding.
ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSIOIN PROJECT• 27
A ARDURRA GASEOUS CHORINE FEED SYSTEM TO HOUID HYPOCHLORITE FEED SYSTEM Stanislaus Septic to Sewer Project Notice of Exemption | Self-Help Enterprises, Modesto, CA Environmental Task Leader. Prepared a CEGA Statutory Exemption to connect Stanislaus Elementary School directly to the Cily of Modesto's existing sewer system. The 4,100 linear fool sewer main alignment will run easterly from the School along the north side of Callrans right of way (ROW) in the SR-219/Kiernan Avenue bike lane lo Carver Road, hen southerly to connect to the Cily's existing sewer at Bangs Avenue. The project is needed to replace an outdaled seplic system al the School. The Notice of Exemplion was prepared in accordance with SB 131 for small, disadvantaged waler and sewer systems, and included a deloiled project description, supporling memo, and technical sludies for biological and cultural resources. Charles also provided inpul for the environmental package needed to secure grant funding Ontario Sports Complex USACE Section 408 Permitting | City of Ontario, CA Environmental Permitting Leader. Charles is leading the Seclion 408 permit coordinalion effort with the US Army Corps of Engineers (USACE) for infrastructure improvements al three locations adjacent to the Cucamongo Channel, requiring minimal access within the Son Bernardino County Flood Control District (SBCFCD) right-of-way. Efforts lo dale have included coordinalian with local USACE staff, preparalion of o project descriplion, construction schedule, and compilation of documents needed to navigale the Seclion 408 process.
Warm Springs Lift Station Permit Coordination | Eastern Municipal Water District, Temecula, CA Environmental Permitting Leader. Charles conducted research in suppor of geolechnical boring permils needed to access right- -way for c proposed lift station in the Cily of Temecula. The effor Included review of prior CEA documentalion on an odiacent relaled project, as well as coordinalion with the geotechnical consuliant.
Huntington/Tolberl Channel Improvement Project CEQA Compliance | Orange County Public Works, Huntington Beach, CA
Environmental Task Leader. Led tho CEQA environmental task lor proposed improvements lo the Hunlinglon/Talberl Channels in Orange Conly. The project Inolves maintenance lo replace corroded sheel pile wall segments of the Hunlinglon Beach Channel and the Talber Channel. Stormwater improvements would be installed behind the new walls and o pedestrion bridge would be lemporarily removed.
Efforts involved preporalion of a CEGA approach memorandum oullining the respeclive merits of various approaches lo environmental documentation.
Roemer Water Filtration Facility Expansion Pro eject IS/ MND | West Valley Water District, Rialto, CA Environmental Task Leader, Managed an IS/MND to evaluale the polenlial environmental impacts associated with trealment capacily expansion of the Oliver P. Roemer Water Filtration Facility. Project components include onsile improvements, as well os a water conveyance pipeline. Key CECA issues included biological resources, cultural resources, hydrology and waler quality, and noise. The environmental effor also included preparation of CERA Plus documentation associaled with State Revolving Fund funding.
La Breo Suborea Well and Transmission Main 15/MND | City of Beverly Hills, CA Project Manager. Managed an IS/MND for a groundwater production well and pipeline connecting lo a waler realment plan, locoted in the Cily of Beverly Hills. The well would be siled in a residential neighborhood, and the pipeline would be construcied along urbanized la Clenega Boulevard adjacent to the City of Los Angeles. An extensive public oureach elfor was implemented to assure that local residents are aware of potential temporary traffic impacts during pipeline construction.
RP-5 Solids Handling Facili Ises Evaluation inland Utilities Agency (IEUA), Chino Hills, CA Environmental Task Leader, Served os Environmental Task Leader to identify CEQA miligation measures and permit requirements associaled with polential lulure uses of the RP-5 Solids Handling Facility. The environmental review was part of a consullant's evaluation report Intended lo support IEUA in selecting the most feasible and cost-effeclive oplion for future use of the site.
Roosevelt Park Stormwater Capture Project 15/ MND County Department of Publie Works, Las Angeles,
Project Director. Managed an IS/MND for the Roosevell Park stormwater caplure project, localed in the Florence-Grahom portion of the Cily of Los Angeles. The CEGA document liered off an Enhanced Watershed Management Progiam EIR, addressing polenlial environmental impacis associaled with slorm drain diversions and related improvements to Fronklin D. Roosevell Park. Key issues included water quality, groundwaler and soil manogement, construclion nolse, nightime lighling, and recrection.
CO CARICO ENGINEERING DESIGN SERVICES OF CHLORINE CONVERSION PROJECI 28
ARDURRA GASFOUS CHLORINE FERO SYSTEM TO LIQUID HYPOCHLORITE FFED SYSTEM, Avenue K Transmission Woler Main Phase IV CEQA Addendum | Inland Empire Utilities Agency (IEUA), Chino Hills, CA
Project Director. Managed environmental documentalion Including a CEGA addendum, lechnical studies (biological resources, cultural resources, and air quality, and a State Revolving Fund Loan Applicalion Environmental Package. Facilily improvemenis may be funded in part through the California Clean Water Stale Revolving Fund, which is partially funded through the Environmental Prolection Agency and is subject lo federal environmental regulations, including the Environmental Sile Assessment, National Historic Preservation Aci, and General Conformity Rule for the Clean Air Act.
Recycled Water Master Plon EIR | City of Riverside Public Utilities Department, Riverside, CA Project Manager. Monaged an EIR to address the polential environmental impacts associated with the Cily of Riverside's proposed recycled water system infrastructure program. Key environmental issues were water rights, stooge, and diversion from the Santa Ana River, as well as biological and cultural resources impacts associaled with program implementation. Worked alongside the Cily and their legal counsel, Best Best & Krieger, lo craft project and alternatives descriptions that were technically accurale and legally defensible.
Waterworks District 29 Water System 5-Year Capital Improvement Progrom (CIP) CEQA Documentation | Los Angeles County Public Works, Los Angeles County, CA
Project Director, The County's Water System Master Plan for Waterworks District 29 identifies system lacilities needed to meet onlicipaled demand in the Malibu/Topanga area of the County, Comprising a set of priorily projects, the initial five-year CIP includes six aboveground water reservoirs, 26 pipeline segments, and seven supporling components. Topics of interest lo the local community Include the polential for short-term construction impacts and perceptions regarding growth inducement. Supervised the initial project environmental onalysis, including coordination with the Conly Walerworks Division lo define additional improvements contemplated under the project.
Owen Tank Repla ment Initial S/ MND | Los Angeles County Public Works, Los Angeles, CA Project Director. The project involved preparation of a CEQA IS/MND for replacement of on exiling 100,000-gallan water siorage lank with a 500,000-gallon lank, additional surge lank, concrete poving, a relaining wall, and demolition of the old tonk. The project is located in a residential area in Topanga Canyon, with key environmental issues being aesthelics/views from adjacent homes, construction nolse, ond proleclion of on exisling oak tree on site.
New Evans Reservoir 1S/MND City of Riverside Public Utilities Deportm Riversid Project Directer. Responsible for the overall preporalion and delivery of a CEGA document for a proposed reservoir: Coordinated with the City and Internal project management and technical soff to develop a complele project description thal addressed the project's polenlia environmental impacts. The project requied several rounds of tefined engineering design for incorporation into the drali IS/MND document.
Owens Lake Gorge Restoration Initial Study and Technicol Review | City of Los Angeles Depariment of Water and Power, Bishop, CA
Project Manager. The project involved the preporation of an Inial Study and supporting technical studies to evaluate potential environmental impacts ussocialed with the Owens River Gorge Restoralion project, locoled olong US 395 north of Bishop, Colifornia. Key issues Included biologicol resources, hydrology/water qualily, and recreation.
CHO CAXE ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT ^ ARDURRA GASEOUS CHECRINE FEED SYSTEM TO QUID HYPOCHLORIE FEED SYSTEM 29
OMID KHODADADI, PE, PMP
ELECTRICAL
EDUCATION Omid Khodadadi is a registered senior elecirical engineer with over 11 yeors of experience in power • BS, Electrical Engineering,
and control systems design across diverse sectors, including waler resources, mining, Iransportalion, Universily of Waterloo,
Ontario, Canada and oil and gas. He has led mulidisciplinary looms and served as engineer-of-record on complex EPC projects throughout the United States and Canoda. His experlise spans MV/IV power distribulion,
LICENSES &
REGISTRATIONS instrumentalion and controls, syslem studies, and compliance with industry stondards, making him a • Professonal Elecirical valuable technical leader in both public and private sektor infrastructure development.
Engineer
CA No. 24564 Front Street Lift Station and Wetwell Rehabilitation | Eastern Municipal Water AZ No. 84165
+ 11 addilional slates District (EMWD), Riverside County, CA Project Monogement Electrical Engineer. Coordinated and designed power and control systems as part of the wet well Professional (PMP), PMI rehabilitalion and new flow meter vault. The design required integralion of new equipment into exisling No. 6113229
MCC and SCADA control panels.
PROFESSIONAL
ASSOCIATIONS Engineering Design Guidelines Multiple Disciplines and Project Lines | Eastern • Oronge County Water Munieipal Water District (EMWD), Riverside County, CA Associalion (OCWA
Electrical Engineer. Responsible for reviewing and recommending measures lo EMWD's existing YEARS OF EXPERIENCE design guidelines incorporaling latest codes, standards, and industry best proclices for electical and - <| with Ardurra
I&C design.
• 12 Tolal
Michelson Water Recycling Plant Fueling Focility | Irvine Ranch Water Districe (IRWD), Irvine, CA
Electrical Engineer. Responsible for power and controls design of new aboveground storage gasoline and diesel fuel managemeni system complete with 480V switchboard and starter panels in coordination with Instrumentation and Control (l&C) design.
Reclomation Fasility Dewatering Polymer Rehobilitation and Wosh Water Beester Pumps Relocation | Eastern Municipal Wafer District (EMWD) and Moreno Valley Regional Water, Moreno Valley, CA
Electrical Engineer. Assisied EMWD with power/controls design and contract documents for four new polymer pumps and relocalion of existing wash-water booster pumps in the dewatering building roted Closs 1 Division 2.
Clearview Reservoir and Fump Station Replacement | Golden State Water Company, Orange County, CA
Electrical Engineer. Project involved the design-build of two portable water tanks and associated booster pumps that provide storage for the Sanla Ana, Orange Conly area. The work included a new 480V service pedestal, MCC, PLC panel, and associaled instruments and controls design.
ENGINEERING DESIGN SERVICES FOR CHORINE CONVERSION PROJECT. 30
ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LOUID HYPOCHLORITE HEED SYSTEM
SHAWN ROHR, PE
INSTRUMENTATION & CONTROLS
EDUCATION Mr. Rohr has over 35 years of experience focused on power and control system design of waler and • BS, Elecirical ond waslewaler treatment and disiribulion focilities, including the design of power, control, instrumentation Compuler Engineering.
Konsos State Universily, and SCADA systems. I-lis experience also includes project management and project engineer Manhallan, KS responsibilities which include determining design requirements with clients; preparing estimates for the LICENSES & electrical and I&C designs; coordinaling belween the electrical and instrumentarion and controls (l&C) REGISTRATIONS design engineers and the client and olher engineering disciplines; and providing consinuction support • Professional Electrical
Engineer, CA No. 21900 and starlup services. He has completed electrical and control system designs for treatment plants, • Professional Electrical chemical feed systems, ond pumping stolions.
Engineer, AZ No. 35678
= Profess onol Electrical Michelson Water Recycling Plant | İrvine Ranch Water District, Irvine, AZ - Engines, MO No. 27858 Electrical/I&C Engineer. Managed Elec/1&C leam for blosolids and energy recovery focilities YEARS OF EXPERIENCE of the 28-mgd rated Michelson WRP. The process train included thickening of primary sludge and • 2 with Ardurra WAS, acid phase digesters, methane phase (egg shaped) digeslers, centrifuge dewalering of digested • 39 Tolal
sludge, and heal drying for pellet production. Biogas production was augmented with FOG deliveries, treated for hydrogen sulfide and siloxanes, ond utilized in microturbines for onsile power production
11.0 MW). Heai recovery rom the heal dryer and microlurbines was used io heat sludge and FOG storoge.
P2-107. Plant 2 Power Monitoring and Control Systems | Orange County Sanitation District, Orange County, CA
Electrical/I&C Engineer/QA/QC, Provided quality control review for design of power system monitoring syslem that included upgrades lo the plant fiber oplic network, and establishing o dedicaled power monitoring syslem. Design included moving existing power monitoring signals from plant PLCs to new dedicaled power moniloring PLCs, crealing detail nelwork panel and PLC cobinel drawings, P&IDs for demolition and new design, and mulliple schemalic and detoil drawings.
Big Chine Water Project | City of Prescoff, AZ
Senior Electrical Engineer. Provided electrical design oversight for hree large pumping stalions and a water production facility. Each sile required extensive coordinalion with local ullily in determining the requirements for 09kV-12.47 kV substalions of each sile. Provided preliminary load calculalions and funclianal power distribulion diagrams for 12.47 kV, 4.16 kV, and 480 volt distribulion systems with 12.47 engine emergency generalors sized to mainlaln complete operation of the lacilities. 91st Ave WWTP UPOS Expansion ty of Phoenix, A
Quality Contral Electrical/18 C. Provided quality control review for design of Unilied Pump Stolion including 4.16 kV variable speed finished waler pumps, 4,16 kV engine generators for backup power, and controls. Project included two large diameler 96" acouslic Nowmeters on plant effluent piping.
ENGINEEPING DESIGI SERVICES FOR CHIORINE CONVERSION PROJECT. 31 ^ ARDURRA GASEOLS CHIORINE FEED SYSTEM TO LIQUID HYPOCHORITE FEED SYSTEM ARWRE Miscellaneous improvements City of Glendale, AZ
I&C Manager. Oversee I&C design and CPS effort for improvements to the headworks, tertiary filters, odor control systems, and upgrade to the plant control system upgrade. Project included upgrade of existing PLs and SCADA software and improvements lo control syslem nelwork with expansion of fiber optic loop. CPS included programming services for PLC ond upgraded iFIX SCADA sollware. * WRP Miscellaneous Improvemenis | City of Mesa, AZ
Electrical and 1&C Lead. Responsible for elecirical and I&C design on improvements to existing process and electrical facilities. Upgrades included installation of a closed-loop blower cooling system and automation of existing stand-by generator controls, VFD replacement, and fiber oplic loop design.
Butler Drive WRF | City of Peario, AZ
Senior Electrical/I&C Engineer. Responsible for electricol and 1&C design of 10 mgd membrane water reclamation focility and 32 mgd remote influent pump stalion. Developed power distribution syslem design and controls syslem nelwork for both sites, including coordination belween eleciric ulilities (SRP and APS), Cily, and detail design engineers. Power sysiem designs included full generalor backup power systems with automatic Iransfer operalion. Control system designs included redundant Rockwell Automation Allen-Bradley programmable logic controllers with Ethernet IP network within the plant and radio belween facilities. 23rd Ave WWTP Sludge Processing Facility | City of Phoenix, AZ Project Engineer. Assisted in complelion of action items and deferred work items. Work included modificalions to the healing waler system, addition of a chlorine alarm system, upgrades lo the digester mixing pumps, improvements lo the odor scrubber system, trouble shooling the centriluges and various minor design improvements requested by the City of Phoenix.
Mesa NWWRP Odor Confrol improvements | City of Mesa, AZ 1&C Engineer. Provided 1&C design for upgrade of existing on/off chemical dosage at the main plant odor scrubbers lo a continuously looped system with a dosing valye. Coordination with Cily I&C stall to move local control to plan Modicon PLC control system. Included field verificalion of existing controls, review of shop drawings and REls during construction.
CRY REMENCO ENGINEERING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT- 32 ^ ARDURRA GASEOUS CHORINE FEED SUSTEM TO HOUID HSFOCHEORITE FEED SYSTEM
MICHAEL AUCHTER, PE
STRUCTURAL
EDUCATION Michael Auchter brings over 20 years of experlise in structural engineering and projec! managemen!. • BS, Civil Engineering, His experience spons a variely of projecis, including projects for cily and conly governments; K-12 Universily of Arizono,
Tucson, AZ schools; federal military projecis, and industrial projects. Throughout his career, Mike has successfully managed projacis of varying size and complexily and provides limely, high-qualily, and responsive
LICENSES &
REGISTRATIONS service to every client.
* Professional Civil Engineet,
CANo. 64422 Leprino Foods Potable
Project Manager. Managed the preporation of structural engineering calculalions ond preparalion
YEARS OF EXPERIENCE
• <) with Ardurra of Construction Drawings and Construction Administralion for replacement of 200,000-gollon potable • 27 Tolal water storage lank project at mozzarella cheese production facility in Lemaare, CA. Project design consisted of concrete foundation for lank and structural support of 300 linear feet of 16-inch diameter water pipe elevaled 20 feet above ground level.
East Niles Well 19 Arsenic Treatment | Kern County,
Structural Engineering Project Manager. Managed the preparalion of structural engineering calculalions and preparation of Construction Drawings fot the design of water storage tank equipment foundation and seismic anchorage for equipmen os part of an arsenic realmeni project.
CRE Canal 9-22 Relocatio County,
Structural Engineering Project Manager. Monaged the preparation of structural engineering calculations and preparation of Construction Drawings for cast-in-place concrete struclures including inlel and oullet transition structures al each Canal requiring bypass for High Speed Rail alignment for o project localed in Kern Counly.
Leprine Foods Caustic Tank Foundation and Containmer emoore, Project Manager, Managed the preparalion of Stuclural Engineering calcualions and preparation of Construclion Drawings for concrete foundalion, seismic anchorage, and concrete containment area lor 40,000 gallon coustic tank at mozzarella cheese produclion facilly in Lemoore, CA.
Constellation Wineries Fire Suppression Water Storage Tank Seismic Evaluation and Anchorage | Modero, CA
Project Manager, Monaged the preparation of siructural enginearing colculations and preparation of Construction Drawings and Consiruction Administration for evaluation and remediation of a 200,000-gallon fire suppression water slorage lank lo provide proper seismic anchorage al o winery facilily in Madera, CA.
CHY CI CAIEXICO ENGINEERING DESIGN SPICES FOI CHIORIN! CONVERSION PROIFCT 33 ^ ARDURRA GASEOUS CHLORIN! FEED SYSTEM TO HOLID HYPOCHIORITE TEED SYSTEM Roberto Ruiz-Salas PF
Project Managen/ Civil Engineer
Roberto provides consulting services to agencies developing capital improvement projects, including multimodal transportation and public utilities design. An excellent communicator with infectious positivity, Roberto has managed private and public projects that involve coordinating large multi-firm consulting teams across engineering disciplines. He has been Lead Engineer for projects including roadway, roundabouts, signing and striping, bicycle facilities, park design, water quality, site grading, and utility design. Having worked EXPERIENCE extensively in the region, Roberto is dooply famillar with the requirements of 17 years Southern California agencies.
EDUCATION RELEVANT PROJECT EXPERIENCE
BS, Civil Engineering,
California State Project Manager -
Polytechnic University, This project will transform Palm Avenue in the City of Imperial Beach from a San Luis Obispo Caltrans designed corridor to a City driven, placemaking, multimodal complete streets corridor. This multidisciplinary team of 10 subconsultants will work together ACCREDITATION to design Class IV bikeways, 10' wide sidewalks, transit bus-islands, median and sidewalk landscape improvements, a new signalized intersection, modifications to Professional Engineer
traffic signals, multi-modal protected intersections, stormwater BMPs, structural (Civil), CA #81946 clesign, and public outreach, among other disciplines. The one-mile corridor will connect to existing bike facilities, regional bicycle corridors, as well as ongoing
AFFILIATIONS
active City projects.
American Public Works
Association AWA Project Manager-
CRA assisted the City with securing federal and state funds to construct 2 miles of American Society of Class 1, 2, 3, and 4 bicycle facilities within a mile of the 24th Street Transit Center, to build out first and last mile connections, CRA is completing the preliminary Civil Engineers (ASCE) engineering and environmental process, which includes both NEPA and CEOA due to the various funding sources. The project includes agency coordination including:
Caltrans, MTS, SANDAG, SDG&E, Sweetwater Authority, and private developers through the design process.
Project Manager - CRA
completed both the preliminary and final engineering design for this 1.3-mile missing segment in the overall Bayshore Bikeway. The project includes a combination of off-street shared-use paths and on-street two-way protected bikeways and is a multi-jurisdictional effort, requiring close coordination with the Unified Port District of San Diego, Caltrans, SANDAG, MTS, CPUC, and National City. Key project features included right-of-way determination, queue cutter railroad signals with advanced pedestrian preemption, specialty bikeway crossings and pedestrian treatments with GO-8BB permit approvals, and avoidance of DECEMENCO ENGINFERING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT 34 ^ ARDURRA GASFOUS CHLORINE FEED SYSTEM TO LOUID HYPOCHLORITE FEED SYSTEM Roberto Ruiz-Salas Pr
hting Proiec Project Manager - CRA led the design phases of a 2-mile project to close the gap in mobility for residents by building ADA compliant sidewalk, driveways and curb ramps in Vista, CA. The project included the construction of 8 curb extensions at intersections to provide a safe crossing for pedestrians, as well as the construction of ADA accessible driveways, stormwater BMPs, relocation of utilities, and increase in curb inlet capacity. The project is in construction and will be completed at the end of A: Project Manager - CRA completed the
City of San Diego's first ever Pavement Management Plan (PMP) in 2024 that summarized the City's street network, pavement maintenance and rehabilitation strategies, street selection criteria, and the condition of the City's pavement. CRA led a team the effort required to prepare the report which included: analyzing 2023 pavement survey, support in creating pavement repair 10-year funding scenarios, interviews with staff, and publishing the report. CRA has completed the 2025 annual update of the PMP, writing the report, providing updates on the 2024 accomplishments, updating funding scenarios per approved FY 2024 budgets, discussing current political climate in the City, and publishing the update to the report.
CA*: Project Manager - Roberto designed the on-site and off-site improvements for a 4-acre aquatic center in El Centro, CA. The project included the improvement of three local roads and a state road to the north. Roberto led the approval process with Caltrans to improve the state road, including upgrading two intersections to be ADA compliant. *Project prior to joining CRA
CONE CONVERSE CASEOUS CHLORINE FEED SYSTEMS
CE CANICO ENGINEELING DESIGN SERVICES FOR CHIOLINE CONVERSION PROJECI - 35 ^ ARDURRA GASEOUS CHLORINE FEED SYSTEM TO HOUID HYPOCHIORLE TEED SYSTEM Paradigm Geospatial - Resumes
Date: 1/2025
*
GEOMATHL
JAMES NICOLAU IV, PLS/RLS
James possesses over seventeen (17+) years of professional experience completing survey, mapping, and design projects. His history includes mapping, land descriptions, and deed analysis. Moreover, with complimentary Project Management and Real Estate expertise, in both the private and public sectors, he brings a unique depth of experience and strength of capability to his programs. His proven track record and reliable reputation includes high profile projects such as: Petco Park, San Diego County Administration's Waterfront Park, SDG&E's Pipeline Contact:
Safely Enhancement Plan (PSEP), Scripps Hospitals Proton Therapy [email protected] Center and the UGS Topographic and utility survey.
Experience:
Project Expertence:
17+ years
City of San Diego - As-Needed Land Survey, CA: Served as the Certifications:
Project Manager for the City of San Diego's survey services contract.
Typical tasks included boundary mapping, utility feature location, HDS • California PL$ 9238 • Nevade PLS: 031343
scanning, and topographical mapping. Communicated and coordinated data collection efforts with city personnel. • Arizona RLS: 78087 • FAA 107
Sempra Pipeline, Safety Enhancement Plan (PSEP), CA: Survey •Microsoft Certified Teohnician providing surveying and mapping services in support of hydrotest and replacement projects to Sempra's Pipeline Safety CLSA State Director, Enhancement Plan (PSEP). The project includes pressure testing over San Diego chapter. 360 miles of existing pipeline, replacing 294 miles of the 3,750-mile California state system, and upgrading or replacing 224 main line valves throughout the representative to the 24,000 square mile service territory, and covers pipeline projects from NSPS.
San Diego to Santa Barbara.
Notable Clients:
Carlsbad Unified School District - Calavera Hills Elementary, ADA • Caltrans
Improvements (Carlsbad, CA): Project Manager for Carisbad Unified • NAVFAC School District's ADA improvements at Calavera Hills Elementary • U.S. Fish & Wildlife School. This survey captured the existing conditions of the buildings, • GSA walkways, landings, signage, painted stripes, and all other site features • Federal Bureau of within the area of work Investigations
• County of San Diego
• San Diego Gas &
In Electric
ADOT
IS DEAL/CE ENGINEERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT • ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LIQUID HYPOCHIORITE FFED SYSIES 4 SECTION
8. PINM
CAPCKIENUE
FIRM EXPERIENCE
4 FIRM EXPERIENCE
Miromar Plant Ardurra provided engineering design services 1o Three Valleys KEY PERSONNEL:
Municipal Water District for the Miramar Plant Acid Feed System Keviu Soleh, PE Acid Feed System
Upgrade Project Upgrades project, which upgroded the Distric's exisling chemical CONSTRUCTION COST leed facilities to suppor copper sullale pentahydrale (EarthTec®) $970,000 OWNER dosing for algaecide, bactericide, and golden mussel mitigalion DESIGN COST Three Valleys Munkcipal Water purposes. Originally designed for acid service, the facility was $198,000 District
evalualed and redesigned lo accommodate revised chemical PROJECT DURATION CLIENT REFERENCE scrage, feed, and injection requirements, including a new remote 2025 - 2026 Kevin Ponzel, PE
injeclion location al the Riollo Feeder turnout. The project included Principol Engineer PROJECT STATUS
design of new chemical storage and containment facilities, Submilled Final Design 1021E. Miramar Avenue
Cloremont, CA 91211 duplex melering pumps, transfer piping, injection equipment, o SCOPE/KEY prefabricaled remole leed enclosure with day lank and booster 909.621.5568 COMPONENTS:
syslem, and related structural, electrical, instrumentation, and salely •Evaluated the exisling
Improvements.
chemical storage, feed,
Ardurra's services included preparalion of a Preliminary Design and injection lacilities Memorandum, final design drawings and specificalions, opinion • Reploced the existing of probable construction cost, and support during bidding and storage lank and construction. The project required careful consideralion of operaling modilying secondary pressures, system flexibility, construclabilly, seismic design, ond containment operator safely, and demonstrales Ardurra's expertence in • Provided new duplex upgrading chemical feed syslems through a phosed design and chemical melering pumps implementation approoch. and injection quills
* Added transler piping
and a remole day lank/
booster lacilily near the
turnoul
^ ARDURRA DOCENCO ENGINEERING DESIGN SERVICES FOR CHICAINE CONVERSION PROJECT: 37
GASFOLS CHLOPINS FEED SISTEM TO HOUD HYPOCHORE FEED SYSTER Torrance Refinery Ardurra provided condilion assessment and planning services lor KEY PERSONNEL:
West Basin Municipal Water Distric's bulk chemical storage and Kevin Salch, PE; Stelanos Word, Water Recycling PE, Env SP
Plant feed syslems ol the Toronce Refinery Waler Recycling Plan. The project included evolvalion of 13 chemical systems associaled CONSTRUCTION COST OWNER $14,000,000 (Estimoled)
with the facilily's nitrification and MF/RO trealment processes, West Basin Municipal Waler District including sodium hypochlorite, sodium bisulfite, sulfuric acid, sodium DESIGN COST CLIENT REFERENCE hydroxide, ciric ocid, RO CIP chemicals, and threshold inhibitor $220,000 Comille Casillo syslems. Working with Pacific Engineering, Ardurro performed PROJECT DURATION Engineer lI 2025 - 2026
a comprehensive assessment of tonk integrity and associated 17140 Avalon Blvd. mechanical, electrical, controls, structural, containment, safety, and
PROJECT STATUS
Carson, CA 37027 Final Report Submited
operabilly conditions lo determine remaining useful life and identify camillaC@V/esiBasinCA.Gov deliciencies affecling reliability, salely, and long-lerm maintainability, 310.600.6229 SCOPE/KEY
Ardurra's services included review of ovoilable record informalion, COMPONENTS:
operalor interviews, inspection planning, field evaluations, work * Condition Assessment of order review, condition scoring, development of priorilized • Chemical Tanks rehabilitalion and replocement recommendations, and preparalion • Condilion Assessment of of blanning-level cost eslimates and implemenlalion considerations. Chemical Feed System The project also required careful coordination ol inspection acivities • Eslimalion of Probable and shuldown sequencing lo maintain critical chemical syslems Cost of Upgrades/Repairs in service and avoid disruplions lo plant operations and permit * Recommendations for complionce. The completed assessment provided West Basin with Syslem Improvements a lechnically sound basis for prioritizing capital improvements, Improving preventalive maintenance proctices, ond extending the service life and reliabilily of crilical chemical slorage and feed infrastruclure.
MY DECAIENCE ENGINEEPING DESIGN SERVICES FOR CHICRINE CONVERSION PROJEC ^ ARDURRA 38
CASEOUS CHORINE FEED SYSTER TO HOUID HYPOCHIOPITE TEED SYSTER WWTP Chemical KEY PERSONNEL:
Systems
Improvements
OWNER
Camarilla Sonilory Districl CONSTRUCTION COST
alyses of each system and recommendations for priori $1,500,000 CLIENT REFERENCE placements. Ardurra prepared plans, specificalions, an Noch Cogswell DESIGN COST
Project Manager $100,000
hypochlorile, ammonium hydroxide, and sodium bisullite storage and 6D| Carmen Drive PROJECT DURATION
injeclion improvements. Relevant lo the Cily (Colexico), this project Comarillo, CA 93010 2019 - 2024
involved evalualion and inspection of multiple existing chemical lonks [email protected] PROJECT STATUS
(gycerin, sodium bisulfile, lerrous chloride, ammonium sulfale, and 805.388.5347 Complete
sodium hypochloritel of the start of the project prior to implementing design. SCOPE/KEY
COMPONENTS:
Preliminary. and Final
Design, Engineering
Services During
Consruction
Construction of
replacement/
improvements to sodium
hypochlorile system
* Maintenance of plant
operations required during
construction
^ ARDURRA CECICANCO ENGINEERING DESIGN SERVICES FOF CHORINE CONVERSION PROJECT- CASEOUS CHLORINE FEED SYSTEM TO HOUD HYPOCHLORITE SEED SYSTEM 39 Sodium Hydroxide The project involves the design of a sodium hydroxide storage KEY PERSONNEL:
Storage and ond injection facility for adjusiing the product water pH and Solen Meger teria loda Injection Facility alkalinily at the surface water realment plant lo miligate corrasion of downstream water supply infraştructure, minlmize lead and/or CONSTRUCTION COST OWNER copper corrosion from premise plumbing, and mainlain a product $3,000,000 Cily of Coninga woler pH that complies with the City's water supply permit. The DESIGN COST CLIENT REFERENCE facilily includes a recessed concrele containment structure with o $100,000 Sean Brewer metal canopy, an insulated 14,000 gallon fibergloss reinforced PROJECT DURATION Assistant City Monoger plastic (FRP) storage tank designed to accommodate both 50- and 2022 - 2025 155 W. Durian 25-percent sodium hydroxide, and a duplex chemical metering
PROJECT STATUS
Coolingo, CA 93210
skld with heat tracing lo prevent cryslallizalion. Ardurro worked Complete [email protected] closely with Coolingo Surface Waler Trealment Plant staff lo provide 559.935.1533 ext. 143 SCOPE/KEY
cost-efleclive inlegration of the new sodium hydroxide facilly with COMPONENTS:
nearby infrastructure within the realment plant. Relevont to the •Preliminary- and Final Cly (Calexical, this project involved evaluation and inspection of Design, Engineering Coalinga's existing unused chamical tanks lo delermine the suitability Services During for re-use al the new facilily. Construction
• Construction ol new
sodium hydroxide
chemical feed and storage
facility
Mainienance of plant
operalions required during
conshuction
• Regulatory coordination with
DDW throughoul design and
update lo Operolions Plon
^ ARDURRA TORCARCO ENGINEERING DESIGN SERVICES FOR CINORINE CONVERSION FROIECI GASŁOUS CHIORINE FRED SYSTEM ONOLD HYPOCHIORITE REED SYSTEMA 40 Surface Water Ardurra designed a series of treatment process improvements al KEY PERSONNEL:
Treatment Plant the City of Coalinga's 12-million-gallon-per-doy |MGD) water Stelonos Word, PE, Env SP - realment plant to address water quality objeclives and regulatory Projeci Engineer Upgrades
requirements. CONSTRUCTION COST
OWNER $4,000,000
Cily of Codinga The TTHM Reduction Project involved coordinalion with the Stale Waler Resources Control Board Division of Drinking Waler on DESIGN COST CLIENT REFERENCE $ 150,000
various water quality consideralions and the United States Bureau of Sean Brewer
Reclamation ond Wesllands Waler District on various encroachment PROJECT DURATION Assistant City Manager
permil issues for improvements within USBR properly. 2021 • Ongaing 155 W. Dution
PROJECT STATUS
Coolingo, CA 93210 Ardurra also evalualed, priorilized, and designed improvements Ongoing
[email protected] lo the Cily's sodium permanganale and carbon dioxide storage 559.935.1533 ext. 143 ard injection systems lo enhance coagulation and pre-oxidalion of SCOPE/KEY the row water supply. In addition, Ardurra prepared a greenfield COMPONENTS:
design for a new sodium hydroxide slorage and injection facilily • Improvements lo sodium lo provide odditional finished waler stabilizalion. Cost analyses permangonale and were compleled for each realment system, along with phased carbon dioxide storage replacement recommendations lo accommodate the Clly's funding and injection systems constraints. Project doliverables included plans, specifications, ond New sodium hydroxide opinions of probable construction cost for sodium hydroxide, sodium storage and injection permanganale, and carbon dioxide slorage and injeclion syslem facility Phased realment syslem
Improvemenis.
upgrodes
ARDURRA ENGINEERING DESIGI SERVICES FOR CHIORINE CONVERSICI PROIECE
GASEOUS CHIONE TEED SYSTEMO LOUD HYPOCHI OUTE FEED SYSIFIA Sycamore Woter This project involved the planning, design, and consuction of a KEY PERSONNEL:
Treatment Plant greenfield groundwater treatment facility with a Phose 1 capocity Stelanos Word, PE, Env SP of 8 MGD and bulldout capacily of 11.3 million gallons per Project Manager/Technical Lead OWNER day (MGD). The focilly design includes Granular Activaled CONSTRUCTION COST Atascadero Mulual Waler $50,000,000
Corbon (GAC| lo reduce concentrations of short- and long- Company
chain perfluorinaled compounds and hydrogen sulfide lo levels DESIGN COST CLIENT REFERENCE mandoled by stale regulations. Deep bubble aeration technology $1,200,000 John Neil
was employed lo reduce lead and copper corrosion within the PROJECT DURATION General Manager
distribution system. Pilot testing of GAC ond deep bubble aeralion 2020 - Ongoing 5005 El Camino Real
Alascodero, CA 93422 was conducied lo assess their anticipaled performance and refine PROJECT STATUS cosi eslimates. The facility design features on influent flow control Final Design ineil@amwcus
805.461.7217 stalion, a 500,000-gallon raw water forebay, a raw water pump SCOPE/KEY sialion, cartridge filitalion, /welve (12) duplex 40,000 pound GAC COMPONENTS:
adsorption systems, Five (5) deep bubble aeralion tanks, a lwo- •Preliminary-and final milion-gallon below-grode cast-in-ploce cleorwell, high-service Design, Engineering product woter pump stations, surge control infrastructure, chemical Services During storage and Injection facilities, a molor control center/electrical Construction room, on operations center, and security systems. The new sodium * Consuction of new hypochlorite system includes o 4,500-gallon fiber reinforced sodium hypochlorite plastic (FRP) vertical storage lank with a duplex chemical feed skid facilily as a port of larger and associaled instrumentation. The corrosion inhibitor chemical greenfield PFAS and
feed system includes an 800-gallon FRP vertical storage lank, carbon dioxide removal duplex chemical feed skid, and associaled instrumentalion. Arduno Irealment facility
continues to lead the process design, Preliminary Engineering • Mainlenance of plant Reports, construclion plans, specificotions, and cast eslimales in operations required during conjunction with our discipline-specific subconsultants. Relevant to construction
the Cily (Colexicol, this project involved evaluation and inspection Regulotory coordination of the Water Company's existing cross-linked polyethylene with DDW throughout hypochlorite- and corrosion- inhibilor storage lanks to determine design ond update lo suitability for re-use in the new plant design. New FRP lanks were Operalions Plan selected to replace the aged existing storage tanks.
^ ARDURRA DECAINEE ENGINEERING DESIGN SERVICES FOR CHIONINE CONVERSION PROJECI GASEOUS CHORINE TEED SYSTEM TO HOUND HYPOCHICRITE FEED SUSIEN 42 Hill Canyon The Hill Conyon Treatment Plant in Thousand Oaks, CA, hos KEY PERSONNEL:
Treatment Facility undergone significant improvements, parlicularly focusing on the Michael Nunley, PE, Assac DBIA . QC/lechnical Advisor
CONSTRUCTION COST
OWNER
$4,458,696
Cily of Thausand Oaks
CLIENT REFERENCE DESIGN COST
Clifford G. Finley, PE $946,608
digesler leed pumps. The new FRP siorage lanks were designed in Public Works Deportment conformance with ASTM D3299 ond featured jackeled fiberglass PROJECT DURATION 2100 Thousond Oaks Blvd. Insulalion lo maintain an internal lemperalure of 100° F. This focility 2021 - Ongoing Thausond Osks, CA 91362 PROJECT STATUS
was designed lo handle up lo 40,000 gallons per day of FOG, [email protected] Ongolig
lealuring an aulomoled unloading process, screening equipment, 805.449.2400
and a heal exchanger. The projact also entolled the construetion SCOPE/KEY of a slab-on-grade sile wilh e containment wall, o nuck offloading COMPONENTS:
area, and the remaval and replacement of existing asphall • Improved solely concrete povement. The total construction cosl was eslimaled al • Reduced odor approximately $4.3 millian, with Ardurro serving os the engineering Aulomaled melering/ firm responsible for the design and construction management. The accounling syslem project is a leslament lo the commilment lo enhoncing the elficiency •Increased flexibilty and and suslainability of the Hill Canyon Trealment Plont, equipment redundancy Advanced Water Ardurra provided comprehensive design services for the chemical KEY PERSONNEL:
storage and injection systems at the Cily of Santa Paula's Advanced Mike Nuriley, PE, Assoc. DBIA - Trealment Facility Project Monager; Stelonos Word
Water Trealment Focility, demonstrating our expertise in complex PE, Env SP - Process Engineer:
OWNER chemical handlling infrastruclure for advonced frealment processes. Kevin Soleh, PE - Project Engineor Clty ol Santa Paula The project involved the integration of mulliple bulk and lote-fed
CONSTRUCTION COST
CLIENT REFERENCE chemical systems-ranging from sulfuric acid ond sodium bisulfite lo $30,000,000 [lull AWTF Dale Goodmon soda osh, lime slurry, mognesium chloride, sodium hydroxide, and Construction) Public Worka Director
aniscalanis. Each chemical sysiem was designed with appropriale DESIGN COST 970 Venluro Street $1,800,000
slorage vessels (FRP. and phenolic-lined steel lanks), melering pump Sanla Paula, CA 93060
skids (diophragm or peristallic), and sockel-welded PTFE or PE PROJECT DURATION [email protected] lubing lo assure safe and accurale delivery of Irealment chemicals Current phosed projeci begon
805.933.4212 x314
June 2024
1o their designaled injeclion points. Storage oreas were equipped with secondary conlainment, ultrasonic- and magnelic-level sensors PROJECT STATUS mergency eyewash stalions, and heal-raced, insulaled piping lo On hold freeze prolection-fully compliant with CFC and NFPA safely codes. SCOPE/KEY Injection skids were equipped with local control panels, aulomoled COMPONENTS:
low control loops, calibralion columns, fushing assemblies, and •New chemical leed nsiumenlalion for low and piessure monitoring. Each syslem wa syslems Iollored io he specilic dosing and process needs of the facliy's • Now chemical storage nanofiltalion, reverse osmosis, ultafilralion, and brine concentrator syslems syslems. • Preliminary and final
design
NGINEERING DESIGI SERVICES TOL CIORINE CONVERSION PROIECT ^ ARDURRA LASEOUE CHLORIJETEEN SUSTELS TO UOUID HYPOCHICRHE BEED CYSTEN 43 Southland Ardurra was selecled by the Nipomo Community Services District KEY PERSONNEL:
Wastewater (NCSD) lo provide engineering support for permit compliance lichoel Nunley, PE, Assoc. DB ond Phase 2 Concept Design improvements al the Southland Principal-in-Charg Treatment Facility CONSTRUCTION COST
Wastewaler Trealmen Facility (WVT). This project esponds o $13,000,000 Improvements:
Phase I| newly issued Central Coast Regional Woter Quality Control Board Wasie Discharge Requirements, effeclive January 1, 2025, which DESIGN COST $450,000
OWNER impose more stringent effluent limits, expanded moniloring and Nipomo Communily Services Distici reporting obligalions, and the development of multiple lechnical and PROJECT PURATION 2025 - Ongoing
CLIENT REFERENCE planning documents lo assure long-term regulatory complionce and Elizabelh Gamez, EIT operalional resilience. PROJECT STATUS Interim Distric Engineer Ongoing
The scope of work includes comprehensive permil compliance 148 South Wilson Streel SCOPE/KEY
support, preparalion and submittal of required technical reports, Nipomo, CA 93444 COMPONENTS:
including a Permit Compliance Plan, updated Operalions and [email protected] • Mechonical Improvaments
805.929.1133 Maintenance Manual, Sall and Nurient Management Plan, Time Schedule Complionce Plan, Wostewater System Capacily Plan, • Electrical and and Climale Change Adaptallon Plan, as well as coordinalion Instrumentation with regulalory agencles throughout the compliance process. These Improvements efforts are structured lo supporl continued operalion under interim - Process Engineering • Preliminary Engingering ond
limits while establishing a clear and achievable path to meet final Pions
effluent requiremenis.
In parallel, Ardurra is leading the Phase 2 Improvements Concept Design for the Souhland WWTF to address projecled increases in wastewater flows associated with system consolidation and fulure growih. The concepl design evaluates and advances upgrades lo key frealment and solids-handling systems, including influent pumping, gril removal, aeralion and blower capacily, secondary clarification, sludge thickening, and dewalering.
Through an integraled planning, regulatory, and engineering opproach, the project establishes a lechnically sound and phased framework for achieving regulatory compliance, increasing treolment capacily, and enhancing system reliobilily ond climate resilience of the Southland WWTF.
depart ENGINEERING DESIGN SERVICES FOR CHIORINE CONVERSION FROJECT - ^ ARDURRA GASFOUS CHORINE FEED SYSTEM TO HOUD HYPOCHICRITE FFED SYSTEM 44 Additional Project Experience - Water Trealmen!
Ardura has executed over 500 water treatment projects throughout California, showcasing its commilment to delivering reliable and innovalive waler solulions. Our extensive porfolio demonstrates our expertise in addressing complex waler quality challenges and our dedication lo enhancing waler reliabilily and safely for clients similar to those of the Cily.
Project Type* Constituent
Client
PFOA and PFOS, Iron,
Atascadero Mutual Water lon Exchange, GAC,
PFOS/PFOA Treatment Manganese, Hydrogen
Company Oxidation Adsorption Sulfide
Atascadero Mutual Water PFAS Remediation Program Various PFAS and PFOS Company Management
Belmont Water Corporation Well No. 1 TCP Treatment Adsorption (GAC) TCP Buena Vista Water Storage Ag. Drainage Study BWRO Selenium Dist.
California Institution for Men Chino Prison Water Treatment Ion Exchange; GAC Nitrate, Hardness, TCE Cambria CSD Seawater Destination Project SWRO Salinity/Hardness Conejo Wellheld GAC Treatment Adsorption (GAC) TCP
Camrosa Water District Evaluation
Capistrano Beach WD 1.5 MGD/BWRO BWRO Salinity/Hardness Capistrano CSD Capistrano Desalter BWRO, Greensand Salinity/Iron Salinity/Hardness/Iron/
Capistrano Valley CWD San Juan Capistrano Desalter BWRO Manganese Channel Islands CSD Seawater Desal. Feasibility Study SWRO Salinity/Hardness City of Arroyo Grande Well No. 11 GAC and Greensand Iron and Arsenic City of Bakersfield 5 Wells Arsenic Treatment Adsorption Arsenic City of Beverly Hills Beverly Hills Desalter WTP BWRO Salinity/Hardness Total Trihalomethanes Reduction Carbon Dioxide. TTHM/DBP City of Coalinga Facilities Permanganate
Raw Water Screening,
Conventional Flocculation, Surface Water (Raw
City of Coalinga Surface WTP Upgrades Sedimentation, Gravity Water Organics and In- Filtration, Chlorine organics)
Disinfection
City of Compton Wells No. 16 and 18 - Planning Various PCE/TCE Well No. 32 Nitrate Blending lon Exchange Nitrate
City of Delano Analysis
City of Fillmore Fillmore WTP Treatment Study BWRO Salinity/Hardness Pump Station No. 177 Wellhead Adsorption (GAC), Air TCP, Carbon Dioxide City of Fresno Treatment Improvements Stripping
Pump Station No. 185 Wellhead Adsorption (GAC), Air TCP. Carbon Dioxide City of Fresno Treatment Improvements Stripping
Pump Station No. 345-1 Wellhead Hydrogen Sultde.
City of Fresno Oxidation-Adsorption Arsenic, Iron, Manganese Treatment Improvements
Pump Station No. 347 Wellhead Hydrogen Sulfde, Iron,
City of Fresno Treatment Improvements Oxidation-Adsorption Manganese *SWRO - Sea Water Reverse Osmosis; BWRO - Brackish Water Reverse Osmosis EITY OF CAIRICO CASEDIES CORNE FEE SEEN TO GUID FIVE CHICORIE EE YECIA 45 ^ ARDURRA
5 SECTION
PROJECT
APPROACH &
SCOPE OF WORK & SCOPE OF WORK 3. PROJECT APPROACH
PROJECT APPROACH &
5 SCOPE OF WORK
Technical Approach Ardurra Approach
The City of Calexico (Cily) intends to replace their existing goseous Our experience designing and converting disinfection systems has chlorine feed systems with sodium hypochlorile of the Cily Water Informed our development of project approach. Sodium hypochlorite Trealment Plant (WTP) and Eastside Water Reservoir (EV/R). The degrades quickly at facilities thal use bulk 12.5% solution, even WTP has capacity of 14 MGD and reals peak flows up to 9 MGD, indoors. It is assumed the Cily would allemp to keep the hypochlorite with an average daily demand of 7-8 MGD. EWR has a design syslem indoors, and possibly in the same room as the old chlorine copacily of 6 MGD but overage daily demand is 1.25 MGD, gas/eduction areas. Bulk solution degradation con be miligaled wilh proper slorage condilions, off-gassing rehef valving, oplimized The purpose of chlorination is to kill pahogens. The Cily has done an excellent job as indicaled by the absence of any Tolal Coliform pipe rouling with a minimized number of hard elbows and tees, cooling of indoor areas, and proper tank seleclion. An allernalive Bacteria, Fecal Coliform, and E, Coli in woler samples. proposilion could be lo size the solution lanks a little larger, install The main purpose of this conversion is to reduce risk lo sensilive water softeners with a dilulion line, and reduce solulion concentration receplors near both facililies. Chlorine gas exposure con be loxic to 5 - 6% lo miligate adverse elfecis of degradation under 12.5% and even brief exposure con resull in burns. The WTP is localed initial strengih. This approach has been successfully used in Norhern adjacent to commercial areas, residential communities, and the California. Dosing pumps would be sized larger, but some of the Calexico Internalional Border. EVR is located near residences. scaling effects associaled with 12.5% could be mitigoled. Another Sodium hypochlorile solulion is a sall thal is stored in an aqueous oplion would be lo convert the gas chlorination sysler to an on-sile solulion with no risk of offsite gas releases. generaled hypochlorite system and produce solution from a brine salt.
Design Consideralions We recommend the following efforts lo enhance the scope Options for replacing gas chlorine systems include aqueous sodium presented in the Cily's Request for Proposal (RFP):
hypochlorite storage and feed syslems; onsile generalion of sodium 1. Oplional Alternalives Evaluation: Ardura would work with the hypochlorile; and chloraminalion. Olher alternalives that do not Clly lo review options including continuing use of chlorine gas involve chlorine can include ozonation, uliraviolel disinfection, and ('No Action"), converling lo aqueous sodium hypochlorite chlorine dioxide which could be exploied as port of this effort. storage/ feed, and chloromination lo address THM formation Water quality impacts are a major conter when evaluating polential concerns. disinfection oplions. Disinfeclion byproducis such os trihalomethanes 2. Oplional CT Evalualion: Review of exisling DDW operalions and holoacelic acid are formed from the reaction of oxidants such permil to delermine basis for concentration-time (CT) as chlorine and bromine and organic compounds in water systems. calculolions and identify if contact lime or tracer study should The Cily of Calexico's 2024 Consumer Confidence Report identified be conducied as an additional tosk. Oplimizing disinfecionl a ronge of Total Trihalomethones (TTHMs) belween 24 and 95 dosage can reduce operaling cost. ug/l. The Primary Maximum Contaminant Level (MCI) is 80 ug/l.
Average is 73 mg/I which is below the MCL. Total Organic Corbon Andura monily performed an oglinizatin sudy for Rainona Mania (TOC) ranged from 2.2 to 2.5 ug/L indicating TTHM formalion is an Water Districts (RMWD'S) San Vincente Weler Recycling Faciny. resting in their ability to significantty reduca ecdion hypochlorte ongoing risk, dotuge by mone Than 23%, by reevalughing
HY CH CALEXIEC ENGINFERING DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT.
A ARDURRA GASEOUS CHLORINE FEED SYSTEM TOLIQUID HYPOCHI ORITE FEED SYSTEM
3. Vender Outreach: Ardurra will reach out lo chemical suppliers TASK GROUP 2 lo deleinine frequency of lypical visits lo Calexico and cost 2 Project Setup, Site Visit and impact of more frequent deliverles. The high temperalures Preliminary Design Meeting indicale more frequent bul smaller deliveries moy be more cost elfeclive and result in less degradotion of stored sodium This task includes data collection of existing facility delails, electrical, hypochlorite. instrumenlalion and controls (I&C) and SCADA Informalion and one sile visit by three individuals. After the sile visil, and plani dolo is Scope of Work received and revlewed, Ardura may request addilional monitoring dala to be collected by Cily stalt.
TASK GROUP 1
DELIVERABLE(S):
Project Management, QA/QC,
• Meeling noles
and Accounting
ASSUMPTIONS
Project Monagement includes holding bi-weekly telephone * Appropriale operations staff will be available for the meeting. coordinalion meelings with the leam and submittal review meelings • City standard borders ond any standard plans/noles/ with the City, as well as monitoring the schedule, budget and delails/NPDES permit requirements will be provided. If no providing formal monthly updales to the Cily. standards exisi, Ardura will submit o recommended border The project stakeholders include the Cay's project manager and and standards to vilize for approval • Mapping for the project will utilize available Lidar informalion staff, the oppropriate Ardura personnel, and subconsultanis if needed. The kickoff meeting will provide the team the chance lo and NearMap imagery (3" pixel for trealment plant 6" pixel for EWR)
clarily goals, review operalional needs and objeclives as well. • Plant influent, effluent, and operalional waler qualily and flow The objeclives of the kickoll meeting Include: dale will be available in spreadsheet formal • Introducing the project leam to all of the key stokeholders • No water quality sampling or flow data will be collected • Discussing project objectives, pioject approach, schedule, by Ardurra. Cly will be responsible for sample collection, and milestones, review history of the project laboratory analysis, and Now moniloring • Establishing lines of communicalion * There is adequate elechical service copacily al both WTP •Idenilying the required data lo be provided by the Clly and reservoir, and new/upsized utilily services will not be required for the new realment syslers and new building
All meelings and lelephone coordinalion meelings will include services loads meeling minules and follow-up aclion iloms. This is o cornersione of • Existing service-enirance equipment has odequate capacity our communication strategy. 1o feed the new power distribulion system equipment feeding Invoices will be prepared and submilled monthly to the Cily and will the new realment buildings be billed based on percentage complele by phose.
TASK GROUP 3
*DELIVERABLE(S) 3 Draft Feasibility/ Preliminary
• Monthly Progress Reporls, Meeing Agendas, Minutes, Design Report (PDR) and monthly invoices and Schedule Updales if necessary Final Feasibility Study/ Preliminary ASSUMPTIONS: Design Report for Water Treatment
*The assumption is that this project will last from July 1, 2026 Plant and Eastside Water Reservoir through December 31, 2027 including construction
• Microsoft Project will be usad for schedule tracking and The report will state lhe design crileria and project constroints, present updates preliminery equipment sizing and layout information, and include budgelary capilal, operallons, and maintenance cost opinions. The *In-person meelings will be conducled every olher month and report will also present the following information:
the opposite month meeling will be virlual. Submitial review meelings will be virlual
ALENIC ENGINFERING DESIGN SEPVICES FOR CHORINE CONYERSION PROJEC) 47 ^ ARDURRA
GASEGUE CHIOLINE FRED SISTEM 1O HOUID HYFOCHIORTE FEED SYSTEM
- Water quality history al the WIP effluent and EVR discharge report review meeling will Cily lo address comments and discuss the • Evaluation of existing electrical power and controls next steps in the project.
Infrastructure in the existing chlorine building lo integrate the Ardurra will incorporale comments received from the City inle he new chemical slorage and metering pump facility
Final Design Report and submit the final repor to the Clly.
Review and coordinolion with Cily's PLC/SCADA controls
DELIVERABLE(S):
and communication standards
* Preliminary size and layoul for rew chemical siorage and Electronic Drait and final PDR meleving pump building al each sile
• Operating objeclives for the storage and feed system and - Five (5) hard copies of Final PDR will be provided operalional paramelers, included (but nol limited to): ASSUMPTIONS • Design chemical dosing rales under varied Now • Cily will consolidale comments from different stall. One condilions sel of review comments will be completed and any further • Design storage volume comments will be addressed in the actual plans and • Chemical injection bockpressures specificalions of the project. • Safely and fire-prolection requirements in accordance The City Building Department and Fire Deporment will be with the lales! CFC as of the dote of the proposal (May provided copies of the Draft PDR. The objective is to receive 2026) input on their permilling process or Issues and concerns with Descriplion of miscellaneous piping, valving, melering, and the approach foor drainage control struclures.
• Estoblishment of necessary clearances for operalional TASK GROUP 4 and maintenance activities (i.e,, equipment replacemenis, Plans, Specifications and cherrical fill events, elc.). Estimate for Water Treatment • A descriplion of electrical power and control requirements Plant and Eastside Water Reservoir including single-line diagroms, electrical site plan, P&Ds, and telemetry system for remote SCADA control/monitoring and o. 50% design submittal dala logging b. 90% design submittal
•Idenlification of site constraints and the most appropriate miligallon meosures (including associaled costs). c. 100% design submittal Potertial impacs lo upstream and downstream WTP For the purpose of establishing a scope and budgel, it is anticipated processes that design of a sodium hypochlorile slorage and feed pump facilily • Identificalion of overhead and underground utililies and will consist of the following al each site (WTP ond EWR):
restrictions (i.e., power, communication, and water utilities). • Description of other site improvements to be included in the • New chlorine gas buildings design Demolilion/ modificalion of existing chorine buildings • Evaluation of sile securly, lighling for low visibilly conditions, • One storage tank al each localion and operator safely Up to Iwo (2) duplex mechonically-actualed diaphragm • Layout of the recommended major equipment within each pump dosing skids with a local hand-olf-aula control panel new chlorination building (pre-wired!
• Engineer's eslimate of probable consiruction/inslallation, Schedule 80 CPVC pipe and filings with Rexible operalions and maintenance costs polyethylene tubing connections • Design and construclion schedule, Including lead times for • New reinforced concrele spill containment ond lank fill structures (to be sized per 2019 CFC regulalions) with
equipment
chemically-resistant coolings
Ardura will submit the drall report for Cily revlew and comment. Emergency eyewash slalion and ullily washdown hose rock Ardurra's picject monoger and project engineer will ollend a draft Power distribulion syslem for the new buildings and trealmen! syslems, including one-line diagrams, panel schedules,
^ ARDURRA ENGINFFRING DESIGN SERVICES FOR CHIDRINE CONVEPSION PROIECT - 48
BASEOUS CHLORINE TEED SYSTEM TO HOLD HYPOCHLORE FEED SYSTEM indoor/auldoor lighting, grounding/bonding, cable/conduil DELIVERABLE(S):
roulings and installation delalls • Response lo comments on the 100% plans, specifications ond • P&ICs showing Instrumentation controls/monitoring of opinions of probable cast associaled treatment system equipment, including PLC control • Electronic copies of the plans signed and stamped by panels and SCADA telemelry systems engineer in responsible charge for ech section will be Il is assumed the final design plons will include the following: submitted for bidding and filing purposes • Digital Specificalions and opinions of probable costs will be • General (4 Sheels) provided
• Civil/ Process (ó Sheets)
ASSUMPTIONS:
• Mechanical & HVAC (4 Sheets)
• City will consolidate comments from liferent staff and • Structural (5 Sheels)
dilferent plan sels. One set of review comments will be - Electical and I&C (12 Sheels)
provided to Ardurra from the cily from the 100% plans and no The 50%, 90% and 100% submiltals will include construction plans, further comments will be incorporated prior lo bidding lechnical specificalions and on engineer's cost opinion. Technical spectficalions will be developed in 2014 CS format and plans will TASK GROUP O 6 Regulatory Agencies,
be prepared in AuloCAD. 90% and 100% submittals will include Front End Documents. Environmental and Permitting
The Cily will review the contents of each submillal and provide a. CEQA, NPDES Construction Permit comments for incorporation into subsequent submillals.
Bosed on our preliminary review, Ardurra onlicipales that the project DELIVERABLES): will qualily for a Calegorical Exemplion under CEGA. We will * Plans will be submilled elecironically vic email or sharepoint prepare a Notice of Exemplion (NOE) lo document the applicabilily folders. Five (5) hard coples of each plan sel will also be of CEQA Guidelines Section 15301 (Class 1, Existing Facililies) submilled lo the Cily for their review and/or Section 15302 (Class 2, Replocement or Reconstruclion). • Response to comments will be provided wilh the next submittal In support of this effort, Ardurra will conduct a screening-level environmental analysis comprised of dolabase searches and ASSUMPTIONS:
olher online resources to confirm that the project consists of minor •Ardura's standard front End Documents will be used for alleralions lo exisling wility systerns with no expansion of capacily. bidding
We will evaluate polential unusual circumsiances or exceptions • Cily will consolidate comments from different staff and under CEQA Guidelines Seclion 15300.2 and acknowledge the different plan sels. One set of review comments will be beneficial reduction in hazardous material risks by eliminating loxic provided to Ardurra from the city and comments will be
chlorine gos near sensitive residential and schaol areas. Ardurra will addressed in the next submilial level
submit the draft NOE to the Cily for one round of review and file the • SCADA integralion will be perfermed by Contractor. This final NOE with the Imperial County Clerk to conclude the CEQA service can be provided by Ardurra as on additional scope process. item but is not included in the current scope of work
Ardura will facilitale compliance with the Calilonia SWRB's TASK GROUP 5 Construction General Permil by preporing ond fling a Nolice of 5 Final Plans, Specifications and Intent (NOl) and require in the bid documents a comprehensive Estimate for Water Treatment Stormwaler Pollution Prevention Plon (SWPPP) tailored to the specific construction oclivilies of the Water Trealment Plant and EasIside Plant and Eastside Water Reservoir
Water Reservoir. This scope includes performing o sile-specific risk Ardurra will incorporate any final comments on the 100% plans for assessment and developing Best Monagement Practices (BMPs) bidding purposes and prepore final bid documonts, construction to mitigale polential sediment and chemical discharges during the plans, technical specificalions and cost opinions. demolition of gaseous chlorine infrastructure ond installation of the new disinfection feed systems. We will manage all elecironic
ENGINEERING DESIGN SERVICES FOR CHORINE CONVESION PROJECT ARDURRA 49
GASEOUS CHECIFINE FEED SYSTEM TO LIGUID HOCHICRIE FEED SYSTEM submilals through the Stormwaler Muliple Applicolion and Reporl Installation of new storage lonks and feed systems at the Water Tracking System (SMARTS) dalabase and pravide the necessary Trealment Plant ond Eastside Water Reservoir. This includes preparing Qualified SWPPP Developer (@SD) cerificolions lo assure the and submiling the required nolificalions through the Callornio project meets all stole and federal NDES requirements. Environmental Reporling System (CERS) at least 60 days prior lo operalion and developing a formal Closure Plan for the safe b. State Water Resources Control Board, decommissioning and removal of the existing goseous chlorine Division of Drinking Water Infrastructure, Funhermore, we will verify that a l new tank syslems b.1 Monthly/Quarterly updates and feature cellified secondary containment and integrity assessments as Operation Permit Modification required by Tille 22 of the California Code of Regulations to millgale risks to the surrounding residential and commercial communities.
Ardurra will coordinale and facilitate on Inilial meeting with the Cily and the Division of Drinking Waler (DDW) to Introduce the project d. Imperial County Air Pollution Control (conversion of the disinfection syslem from gaseous chlorine lo District
12.5% liquid sodium hypochlorile), present the proposed change In Ardurra will perforni the following tasks lo assure the Project disinfection approach, and ablain preliminary leedback regarding complies with Imperial County Air Pollulion Control District |ICAPCD! regulatory expeciations, permilling considerations, and submillal regulations:
requirements.
• Permit Procurement: Prepare and submiil Authorily lo
Following the initiol meeling, Ardurra wil support ongoing Construct (ATC) applications for the installalion of the new coordinalion with DDW through regularly scheduled progress disinfection system lo replace existing gaseous chlorine updale meelings. Andurra anticipales conducling up to 4 tolal equipment.
meelings, inslead of monthly meetings, during design and permilling Regulotory Review: Conduct a delolled New Source to provide updates, discuss key decisions, and address regulalory Review (NSR) to evaluate polential emissions and determine comments. As the project advances and subject la slakehalder input, if requirements for Best Available Contiol Technology (BACTI meeting frequency moy be reduced lo quarterly updates through or healih risk ossessments are triggered by the chemical construclion.
Iransilion.
Ardurra will prepare and distribute meeling agendas (as Dust Control Planning: Develop an Operalional Dust appropriale, and will document meeling discussions, action items, Control Plan (ODCP) for the construction phase to miligale and key decisions. Meeling summaries will be provided lo both the fugilive dust and assure adherence to ICAPC Rule 80l.
Cly and DDW following each coordination meeling. • Final Certificalion: Facilitate the conversion to o Permit to Operale (PTO) upon project completion thraugh documented Ardurra will complete a preliminary Permil Amendment Application equipment inspections and compliance verificalion of the indicaling a change in the disinfection trealment of the WTP and the liquid feed systems.
EWR. This application will also include preliminary design drawings and Environmental Intake Form (EIF) for DDW to review. Once the e. City of Calexico Development Services preliminary design drawings lo change disinfeclion from gaseous Department chlorine lo liquid sodium hypochlorite are DDW approved, Ardurra Ardura will provide the 50% plans lo the Development Services will work on the final Permil Amendmeni Application package. The Depariment and hold a meeling with them to confirm what Building final package will include an updated DDW Disinfection Data Sheel and plumbing codes need to be complied with and verily and and an update to the existing Operalions and Maintenance (0&M] unique sillalions with the lype of project that this Is. Our 90% manuals and associaled appendices for both facilies. Il is ossumed plans will be submilled for formal review, ond the 100% plans will comments will be provided by DDW and one revised submittal will incorporate and address all remoining comments. It is anticipated be prepored upon receiving those comments. that the Development Services Depariment will sign final plans prior c. Department of Toxic Substance Control to bidding in addilion to the Public Works Director and thal any such signalures will be able to be processed electronically.
Ardurra will conduct o comprehensive hozardous wasle assessmen! and focilly evaluation lo delermine the appropriale DTSC permiling lier, such as Permit by Rule or Conditional Authorization, for the in Cathco EMGINREDING DESIGN SEEVICES FOR CHEORINE COVERSION PROJECT 50 • ARDURRA GASEOUS CHLORINE FEET SISTER TO HIGHD HYPOCHORTE FEED SYSTEM f. City of Calexico Fire Department construction bid oward, ond construction close oul. Two public.
Ardura will meet with the Cily Fire Department during the feasibilily meelings will be held for concerns lo be heard. sludy phase lo evaluale and idenlily any concerns that the DELIVERABLE(S):
depariment hos with the opproach and direction being taken for • 3 Stall reports with digilal presentations the project. This may include access, containment, and cleanup • 2 public meetings with digital presentalions standards la incorporale into the final plans. The 50% plans will be ASSUMPTIONS submilled for review to assure that the informalion provided in the •Ardurra will not be responsible for cos lo reserve or rent Preliminary phose has been approprially addressed in the final meeling spaces. Cily stalf will ossist with all sile set up and design. 90% plans will also be provided for their review. Il is not tear down and providing ony other snacks or drinks
anlicipated that the Fire Department will sign the final plans but that • One mailer to all Cily residents may be desired. Ardurra will concurrence will be received via other documentation.
creale the fier, bul cost for postage would be handled by the DELIVERABLE(S): City
• CEGA Categorical Exemption document
• NOl for NPDES TASK GROUP 8
8 Additional Field Survey
• DDW preliminary ond final Permit Amendment Applicalion packages Ardurra plans lo utilize existing lidar information and Near Map- • ICAPCD ATC permit level high resolution photography for base mops. If field work is • Development review department approvals required, we have teamed with Poradign Geospalial for up lo 2 • Fire Deportment approval Field doys with data processing but are willing lo work with a Cily- ASSUMPTIONS preferred locol surveyor if requesled. It Is most likely hol surveying would be needed for property boundary information lo have il • Appropriate level Cily stalf will be present at meelings lo accurately shown on the plans to assure that no facilities are built on assure the right direction is provided for the reviews
privale properly.
• The Cily Building Department and Fire Department will be provided copies of the 50% plans for input on their permilling DELIVERABLES):
process or issues and concerns with the approach. • Up to 1 additional base map will be developed • 90% plans will be submitted to the Building & Fire Department ASSUMPTIONS:
lor code compliance approval
• No cosemenis will be required
• All permits assume no more then 3 submillals to the agencies No Record of Survey will need to be filed for rewiew
• Any lille reports ore excluded
TASK GROUP 7
7 TASK GROUP 9
Public Meetings, Outreach, Bidding Support and
and/or Presentations to City Construction Phase Services Council
a. Bid Phase
a. Preparation of agendas, minutes, agenda Il is assured ihe Cily will advertise the plans and bid specificalions. staff reports, etc.
Ardurra will allend a pre-bid meeting and provide wrillen responses b. Approximately five (5) meetings lo bidder questions through the bid period. Ardurra will prepare Ardurra's team has exlensive experience wriling stall reports, and provide conformed plans and specificalions incorporaling any presenting lo councils and completing public outreach on projects. changes resulling from the bid period.
We have assumed 5 in person meelings that include preparalion Il is assumed no more than five (5) RFls will require a response and of presentatians, agendas, minules, three will be council focused no more than Iwo (2) bid oddenda will be issued presentations with alleratives considered and evalualed,
ENGINEERING DESIGN SERVICES FOR CHIOPINI CONVEESION FROIECT -
ARDURRA
GASFOUS CHIORINE FEED SYSTEM TO MOJID HYPOCHIORITE FEED SYSTER! b. Construction Phase TASK GROUP 10
10 City of Calexico Water
Ardurra will allend the Pre-Construction Meeling with the Cily and the Contractor lo review the project, discuss schedule and project Treatment Plant and Eastside requiremenis, and communication prolocol. Water Reservoir Operation Manual Ardurra will review technical submiltals and provide responses in Plan Update a limely monner, for budgeling purposes, we hove assumed up to Ardura will prepare a comprehensive update to the Cllys existing Iwenly (20) submiltal reviews. Operalion and Maintenance (O&M) manuals lo reflect the conversion of the disinfection system from gaseous chlorine lo liquid Ardurra will respond to Requests for Information (RFls) from the Contractor. For budgeling purposes, we have assumed up lo five (5) sodium hypochlorite. Due lo the significant change in realment process, Ardurra anticipates that updales will be extensive and will RFIs.
elfectively conslilule a neor-complete rewrite of the existing O&M Task 710D Respond lo Requests for Change manuals.
As directed by the Cily, Ardurra will review proposed change orders Ardurra will take this opportunity to review and updale all sections of submilled by the Contractor or requested by the District. Ardurro's the O&M manuals lo assure consistency with the final design, current review will include the polential impacts on the project design and operalional practices, ond applicable regulatory requirements. will include recommendalions to address the proposed changes. Updates will include, but not be limiled to, system descriplions, Our budget assumes review of up to Iwo (2) Change Orders. standard operating procedures, maintenance procedures, salely Ardura will perform technical field observation at the Cily's request protocols, and emergency response procedures associated with the to review work progress for general conformance with the plans new disinfection system. and specifications and lo assess construction issues or conflicis The updaled O&M Manuals will olso incorporate all applicable as they arise. For budgeling purposes, we have assumed Ardurro (DDW) required appendices, including but not limited to:
will provide up lo a lotal of twenty four (24) hours of observation • Updated Disinfection Dala Sheels
including travel time.
• NSF cerlificalion dacumentation for 12.5% liquid sodium Ardurro will prepore os-built crowings lom markups provided by the hypochlorile Contracior. • Produci Dola Sheels and NSF cerlificarion of associaled DELIVERABLE(S) chemical metering ond feeding equipment
• Prebid agenda and minutes • Final design drawings
• 2 Bid Addenda will be prepared
• 5 bid-phase RFls will be reviewed and responses issued • 20 Submillals will be reviewed for conformance with the Ardurra will develop and submit a draft O&M manual oulline for the plans. No more than 10 resubmittals are anticipated Cly's review and approval prior to preparation of the full document. * 5 RF's will be reviewed and responses issued Al o minimum, one coordinalion meeling will be conducted • 2 change orders will be reviewed with the Clly to review the ouline, discuss structure and content, •Digital as-built record drawings will be prepared and 1 hard and incorporale City feedback. Addilonal coordinalion will be Incorporaled as needed to assure the final O&M manuals meel the copy will be provided to the Cily
City's operalional needs and regulalory requiremenis. Final O&M ASSUMPTIONS:
manuals will accompany the final Permit Amendment Application • The number of reviews and submilials as noted above package lo DDW lor review and approval. • Consiruction adminisiralion and inspeclion are not included DELIVERABLE(S):
but services can be provided for an addilional fee Draft O&M manual oulline Contractor will provide legible morkups with measurements Drall Operalion Manual electronically provided and noles lo decument any and all changes deviating from Final Operalion Manual provided both electronically ond 2 copies
he original design plans
^ ARDURRA ENGINEERING DESIGN SERVICES FOR CHIDINE CONVEISION PROIFCT 52
GASEOUS CHIONE FEED SYSTEM OLOUD PPOCHIORITE FEED SYSTERS ASSUMPTIONS: Sample Project Timeline
• Update will be trealed os a neor-complete rewrite of the The following sample project timeline is based on after notice to existing O&M manual proceed is recelved.
* The City will provide existing O&M manual for review Duration Task
• Field staff will be available for inpul during the drafting of the Project Kickoff and data gathering 2 weeks
O&M manual for feedback
• Contractor will provide cut sheels in the submittals for all Feasibility/PDR study including 8 weeks to submittal equipment and materials and that will be made avallable to meeting with Fire dept Ardurra prior to the preparation of the draft O&M manual Public Outreach between feasibility 12 weeks including and 50% plans council approving
• Contactor will provide manuals for newly installed equipment CEQA - between feasibility and 50% for inclusion In the O&M manupl direction from the
plans
• SCADA updates will be noled for the SCADA O&M Manual, feasibility/PDR Complete & Submit 50% Plans
bul will be Included only al a high level for this sysler City Review 2 weeks • The Clly will provide consolidated comments on the droft Complete & Submit 90% Plans 8 weeks O&M monual City Review including Community
• One review cycle is budgeled for the draft O&M manual 4 weeks development review
* Four hours budgeled for Ardurro to oddress DDW comments 4 weeks including and make necessary updoles to permit documents and/or Complete & Submit 100% plans other permitting O&M manuals required
4 weeks - includes
Optional Council approving plans for bidding hnalizing plans Optional Task Construction Advertising 4 weeks
We recommend the following efforts to enhance the scope Award of contract with council 4 weeks presented in the Cily's Request for Proposal (RFP): approval Construction length 6 months
Task No. 3.1 Optional Ah amatives Evaluation: : Ardurra would work with the City to review options including
continuing use of chlorine gas ("No Action"), converling lo aqueous sodium hypochlorite storage/ feed, and
chloraminollon lo address THM formation polential concerns. • Task No. 3.2 Optional CT Evaluation: Review of existing DDW operations permil to determine basis for concentralion- time (CT) calculations and identfy if contact time of tracer study should be conducied as on additional task. Optimizing disinfeclant dosage can reduce operating cost.
ENCINEEPINIG DESIGN SERVICES FOR CHLORINE CONVERSION PROJECT - ^ ARDURRA GASEOUS CHIOPINE FEED SYSTEM TO QUID HYPOCHEOPIE FEED SYSTEM 53 A
APPENDIX
EXHIBITS
A EXHIBITS
1000392146 - Ardurra Group, Inc.
Customer Account Lookup
PWCR
1000392146
Contractor Status
DIR Approved
CSLB
Business Phone
3053929979
Ext
Registration Start Date
2024-07-01
Legal Entity Name
Ardurra Group, Inc.
Doing Business As (DBA)
Ardurra Group, Inc.
Business Structure
Corporation - C corp
CIEY OI CALEXICO ENGINEERING DESIGN SERVICES FOR CHORINE CONVERSION PROJECT• ^ ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LIQUID HYPOCHLORITE FEED SYSTEM Legal Entity Name
Ardurra Group, Inc.
Doing Business As (DBA)
Ardurra Group, Inc.
Business Structure
Corporation - C corp
President
Ernesto Aguilar
Email
[email protected]
Registration End Date
2026-06-30
Crafts
Inspector/Field Soils, Material Tester
Address
Mailing Address
1000 NW 57th Court, Ste 800
Mailing Address - City
Miami
Mailing Address - State
FL
Mailing Address -Zip
33126
Physical Address - Country
United States
CECT CALENCO ENGINFERING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT -
ARDURRA CASEOUS CHLORINE FEED SYSTEM TO HIQUID HYPOCHI ORE FEED SYSTEM 1000827011 - Paradigm Geospatial Inc.
Customer Account Lookup
PWCR
1000827011
Contractor Status
DIR Approved
CSLB
Business Phone
6196332858
Ext
Registration Start Date
2024-07-01
Legal Entity Name
Paradigm Geospatial Inc.
Doing Business As (DBA)
Paradigm Geospatial Inc.
Business Structure
Corporation - Scorp
President
James Nicolau IV
ETY DECALERICO ENGINEERING DESIGN SERVICES FOR CHORINE CONVERSION PROJECT • ^ ARDURRA GASEOUS CHLORINE FEED SYSTEM TO LIQUID HYPOCH OLITE FEED SYSTEM Email
[email protected]
Registration End Date
2026-06-30
Crafts
Field Surveyor
Address
Mailing Address
16772 W Bernardo Dr.
Mailing Address - City
San Diego
Mailing Address - State
CA
Mailing Address - Zip
92127
Mailing Address - Country
/ United States
CRY OF CALEXICO ENGINEERING DESIGIN SERVICES / OR CHLORINE CONVERSION PROJECI ^ ARDURRA GASEOUS CORINE FEED SYSTEM TO LIQUID ASPOCHLORITE FEED SYSTEN
ARDURRA
SUPPLIER CLEARINGHOUSE
CERTIFICATE OF ELIGIBILITY
CERTIFICATION EXPIRATION DATE: July 22, 2025
The Supplier Clearinghouse for the Utility Supplier Diversity Program of the California Public Utilities Commission hereby certifies that it has audited and verified the eligibility of:
Paradigm Geospatial Inc.
Persons with Disabilities Business Enterprise (PDBE)
pursuant to Commission General Order 156, and the terms and conditions stipulated in the Verification Application Package. This Certificate shall be valid only with the Clearinghouse seal affixed hereto.
Eligibility must be maintained at all times, and renewed within 30 days of any changes in ownership or control. Failure to comply erication is determined what may result in a denial of eligibility. The Clearinghouse may reconsider certification if it is determined that such status was obtained by false, misleading or incorrect information. Decertification may occur if any verification criterion under which eligibility was awarded later becomes invalid due to Commission ruling. The Clearinghouse may request additional information GASEOUS CHLORINE FEED SYSTEM TO MOJID HYPOICHLOPITE TEED SYSTEM ENGINESRING DESIGN SERVICES FOR CHLORINE CONVEISION PROJECT - or conduct on- site visits during the term of verification to verify eligibility.
This certification is valid only for the period that the above firm remains eligible as determined by the Clearinghouse. Utility companies may direct inquiries concerning this Certificate to the Clearinghouse at (800) 359-7998.
VON: 22000518 DETERMINATION DATE: July 22, 2022
1000020628 - CHENRYAN ASSOCIATES, INC.
Customer Account Lookup
PWCR
1000020628
Contractor Status
| DIR Approved
CSLB
Business Phone
6197956086
Ext
Registration Start Date
2025-07-01
Legal Entity Name
CHEN RYAN ASSOCIATES, INC.
Doing Business As (DBA)
CR Associates; CHEN RYAN ASSOCIATES, Inc
Business Structure
Corporation - C corp
President
Monique Chen
ENGINEERING DESIGN SERVICES FOU CHIORINE CONVERSION PROJECT• ^ ARDURRA GASEOUS CHLORINE FEED SYSTEM TO HIQUID HYPOCHIORITE FEED SYSTEM Email
[email protected]
Registration End Date
2028-06-30
Crafts
Address
Mailing Address
3900 5TH AVE310
Mailing Address - City
SAN DIEGO
Mailing Address - State
CA
Mailing Address - Zip
92103
Mailing Address - Country
USA
Physical Address
3900 5TH AVE SUITE 310
Physical Address - City
SAN DIEGO
Physical Address - State
CA
-
^ CITY OF CALEXICO ENGINEERING DESIGIN SERVICES FOR CHLORINE CONVERSION PROJECI - ARDURRA GASEOUS CHLORINE FEED SYSTEM 10 UOUID HYPOCHLORITE FEED SYSTEM 92103
Physical Address - Country
CITY OF CALEXICO ENGINEERING DESIGN SERVICES FOR CHIORINE CONVERSION PROJECT • ^ ARDURRA GASEOUS CHIORINE FEED SYSTEM TO HIQUID HYPOCHIORITE FEED SYSTEM
ARDURRA
, LEE+RO
YATER IUFRASTRUCTUSE FIGHEERS
Celebrating 40 years
as pertners in possibilty.
1199 South Fullerton Road
City of Industry, CA 51748
626-812-3391 April 30, 2026
leo-ro.com
Fernando Lamar Williams, EIT, LSIT
Associate Civil Engineer
City of Calexico
Public Works Department
549 Plerce Ave
Calexico, CA 92231
Subject: Fee Proposal for Engineering Design Services for Chlorine Conversion Project- Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System Dear Mr. Williams:
LEE + RO, Inc. is pleased to submit this fee proposal for engineering services for the subject project. The total not- to-exceed fee proposed is $318,223, The enclosed spreadsheet Echibit 6-1 shows the breakdown of our fee in detall. We have also enclosed our Hourly Biling Rate Schedule as Exhibit 6-2 and our Other Direct Cost Billing Rate Schedule as Exhibit 6-3.
Thank you for the opportunity to submit this proposal. Please do not hesitate to call If you have any questions or comments.
Respectfully Submitted,
LEE + RO, Inc.
- chel
Jay Jung, PE Charles Ro, PE
Project Manager President/ Principal-In-Charge
1199S. Fullerton Road 1199 5. Fullerton Road
Cily of Industry, CA 91748 Clty of Industry, CA 91748
(626) 667-5342 (626) 780-8844
[email protected] [email protected]
Encl: Exhibit 6-1. LEE + RO's Fee Estimate
Exhibit 6-2. LEE + RO's Biling Rate Schedule
Exbibit 6-3, LEE + RO's Other Direct Costs Biling Rate Schedules LOs ANGELES BAY AREA SAN DIEGO
City of Cafexico
i come tess on Food Sam to lin Hypoches Feed Systim
6. COST PROPOSAL
Exhibit 5-1. Fee Estimate
Project lasts Labor Category
Tolar Total
EZ EG E4 T5 14 13 A2 Diec TOTAL
Hous Labor
Cosh
$295 $262 5222 $205 $184 S1R7 $162 $158
Task 1.1 Profect Management. Contract Admnistration and Accounting $200 $20,280 9 Months of Final Design, 2 Montis of Bid Phase, 9 Months of 60 20 $20,080 Construction Phase)
Task 1.2 QA/OC 30 $13,530 $50 $13,580
Subtotal Task 1, Project Management, Coordination and Meeting 70 30 12 24 136 $33,610 $250 $33,860 4 $2,132 $2,132
Task 2.1 Profect Setup
25 $5,727 $400 $6,127
Task 2.2 Site Visit and Investigation
25 $5,727 $400 $6,127
Task 2.3 Preliminary Design Kick-Off Meetig
Subtotal Task 2, Project Setup, Site Visit and Preliminary Design 20 16 18 0 10 62 $13,586 $800 $14,386 Meeting
Tas: 3.1 Draft Feasibility Study/Preliminary Design Report 10 12 12 40 20 10 2 118 $23,154 350 123,204 4 4 70 $13,752 $50 $13,802
Tasx 3.2 Final Feasiollity Study/Preliminary Design Report Subtotal Tosk 3, Feasibility Study/Preliminary Design Report 10 18 22 60 32 188 $36,906 $100 337,006 00 16 19 30 40 204 $37,476 $50 $37,526
Task 4.1 50% Design Submillal
Tesk 4.2 90% Design Submittal 15 14 260 $48,154 $50 $48,204 118 $22,222 $50 $22.272
Task 4.3 100% Design Submittal
Subtotal Task 4, Final Design (Plans, Spectications and Cost Estimates) 34 38 44 44 124 42 68 120 58 582 $107,852 $150 $108,002 22 16 66 $12,262 $200 $12.452
Task 5.1 Final Bid Set Design Package
Subtotal Task 5, Final Bid Set Design Package (Pians, Specifications and 22 6 16 65 $12,262 $200 312,462 Cost Estimates)
8 2 $2,506 $2,506
Task 6.1 CEOA and NDES Construction Permit
Task 6.2 Monthly/Quartorty Update to DDW at SWRCE 24 $9,148 $9,148 $1,399 $1,399
Task 5.3 Dopartment of Toxic Substance Costrol
Tast: 6.4 Impenisi County Air Polluton Contrel Distrie! $1,399 $1,399 Task: 6.5 Clly of Colexico Development Servkes Department $1,694 $100 $1,794 $2,582 $100 $2,682
Task: 6.6 Cily of Cetoxico Fire Department
22 56 12 $18,728 3200 $18,928
Subtotal Task 6, Regulatory Agenkles, Environmental and Permitting 16 26 $5,074 $25 $5,099
Tas) 7.1 Preparalion of Agendas, Minules, Agonda Staff Reparts 25 $5.385 $25 $5410
Task 7.2 Meetings (5 Moatings, Assume Remote Virtual Meetings] Subtotal Task 7, Public Meetings, Outreach, andfar Presentation county 4 26 51 310,459 $50 $10,509 Task 8.1 Field Survey and Investigation 8 1 25 $6,047 $400 $6,447 Subtotal Task 8, Addittonal Field Survay 0 0 25 $6,047 $400 $6.447 24 24 56 $10,568 $50 $10.618
Task 9,1 Addendum for Design Related Issues
Task 9.2 Altend Pre-Bid & Pro-Construction Meeting and Prepare Agenda 16 2 34 $7,902 $400 $8,302 & Minules
Tosk 9.3 RFI Rosponses (15 RFis © 3 hoursleach plus CADD & Clerical) 20 $13,354 $25 $13,379 Task 9.4 Submital Reviow (25 submittals @ 3 hrs./each for first revlew: 15 110 $22,526 $25 $22,551 and 10 submittals @ 2hr./each for second revlow plus Cietical) Task 9.5 Assist Chango Orders (5 COsE 5 hours/each plus CADD & 15 33 $6,737 $25 $6.762 Clerkal
16 24 44 $7,916 $50 $7.96G
Tosk 9.6 As-Bullt Record Drawings
63 40 25 131 15 48 30 342 369,003 $575 $69,578
Subtotal Task 9, Bidding Support and Construction Phase Services Tosk 10.1 Update WTP and EVR Operation Manual Plan 36 37,020 $25 37.045 24 36 $7,020 $25 $7,045
Subtotal Task 10, WTP and EWR Operalion Manval Plan Update 228 112 72 115 190 153 1500 $315,473 $2,750 S318,223
SUBTOTAL, TASK 1 THROUGH TASK 10
TOTAL NOTTO EXCEED 228 140 112 467 115 190 1631,500 S31S,473 $2.150. 5318.223 G LEE+RO
ASIS VERSISTER BOASTA!
• •
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System Exhibit 6-2. Hourly Billing Rate Schedule
(Effective from November 1, 2025 to Oclober 31, 2026)
PERSONNEL CLASSIFICATION BILLING RATES (S/HOUR)
ENGINEERS
Engineer 9 E9 Chlef Engineer $362
Engineer 8 E8 Managing Engineer $330
Engineer 7 E7 Supervising Engineer $295
Engineer 6 EG Principal Engineer $262
Engineer 5 E5 Sentor Engineer $222
Engineer 4 E4 Engineer $205
Engineer 3 E3 Associate Engineer $184
Engineer 2 E2 Assistant Engineer $136
Engineer 1 E1 Junior Engineer $113
CAD / DESIGNERS
Designer 6 Principal Designer $244
Designer 5 T5 Senior Designer $187
Designer 4 T4 Designer $167
Designer 3 T3 Associate Designer $158
Designer 2 T2 Assistant Designer $126
Designer 1 Junior Designer $108
FIELD PROFESSIONALS
Erld Professional 5 F5 Senior Resident Engineer $222
Field Professional 4 F4 Resident Engineer $205
Field Professional 3 F3 Senior Inspector $184
Field Professional 2 F2 Inspector $136
Freld Professional 1 F1 Assistant Inspector $113
ADMINISTRATIVE
Administrative 4 A4 Senior Contract Manager $159
Administrative A3 Contract Manager $150
Administrative 2 A2 Senior Word Processor $119
Administrative 1 A1 Word Processor / Admin. Assistant $99 LEE+RO
WATER INFRASTRUETURE ENGINEERS
City of Calexico
Chlorine Conversion ProJect - Gaseous Chlorine Feed Syslem to Liqukl Hypochlorite Feed System Exhibit 6-3. Other Direct Costs
(Effective from November 1, 2025 to October 31, 2026)
Automotile 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 Dravang $8.00 / sheet (24 x 36 or 22 x 34) Compute's & Work Stations No Charge
Sub-consultant 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, At Cost Equipment Rental, etc
LEE+RO
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KEEP OU
CALEXICO
OLIONA
7a Collari Cind Thanks Pled
CITY OF CALEXICO
Engineering Design Services for
Chlorine Conversion Project - Gaseous Chlorine
Feed System to Liquid Hypochlorite Feed System
April 30, 2026
Proposal by
LEE + RO
LEE + RO DIR Registration Number: 1000015613
WARRINGZAS LOURE ASIES
1199 South Fullet on Road
City of Indusley, CA 91248
(626) 912 3391 1e0-10.c0jD
CONTENTS
1. Cover Letter . 3
2. Key Personnel ....4
TABLE OF CONTENTS 3. Understanding and Approach ... 9
4. Schedule 18
5. Experience.... ... 20
6. Cost Proposal (Separate File)
APPENDICES
Appendix A. Team Resumes
Appendix B. Proof of DIR Registration
LEE RO
WATER IHFRASTAUCHURE ENGINEEAS
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Cöver Letter Section 1
LEE+RO
WATER INFRASTRUCTUFE ENGINEERS
Colebrating 40 years
as partners in possibility
1199 South Fullerton Road
City of Industry, CA 91748
625-912-3391 April 30, 2026
lee-to.com
Fernando Lamar Willams, EIT, LSIT
Associate Civil Engineer
City of Calexico
Public Works Department
549 Pierce Ave
Calexico, CA 92231
Subject: Proposal for Engineering Design Services for Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System Dear Mr. Willams:
LEE + RO Is excited to perform engineering design services for the Chlorine Conversion Project. We bring four decades of local expertise and services in water uflity 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 4. Experlence & 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 30,2026.
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.
Come car
Jay Jung, PE Charles Ro, PE
Project Manager President / Principal-in-Charge
1199 S. Fullerton Road 1199 S. Fullerton Road
Clly of Industry, CA 91748 City of Industry, CA 91748
(626) 667-5342 (626) 780-8844
[email protected] [email protected]
LEF• RO Ix LOS ANGELES BAY AREA SAN DIEGO
Key Personnel Section 2
COD0O00D
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 Exhibit 2-1. Org Chart technically proficient, and have recently delivered mulliple successful chlorine disinfection projects.
Our proposed Project Manager, Say 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 CALEXICO 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 construction for the City of El Centro Chiorine Conversion project and the project team will be able to apply the lessons learned during the design and construction of previous Principal-in-Charge projects directly to this proiect.
Charles Ro. PE
The LEE + RO team organization, identifying the roles and responsibilities of proposed key personnel in Exhibit 2-1. Brief biographies for key team members follow. Full resumes are 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 stafled so all necessary work tasks can be completed on schedule Jay Jung, PE and in a timely manner.
Technical Advisor & OA/OC
John Young, PE
Project Team
Process/Mechanical Engineer Electrical/1& C Engineer Structural Engineer Site Civil/Ufility Research Sam Lee. PE Michael Assadourian, PE James Gingrich, PE, SE Ramesh Bachuvala, EIT
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorte 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 experlence. His areas of expertise Include pilot or full-scale testing, sampling and data analysis, and configuration of treatment process trans. He has much experience with leasibility studles, condition assessment, hydraulic analysis, and preparation of prellminary design reports.
Jay develops facillty design criterla, process flow diagrams and P&IDs, plant hydraull, profiles, and final design drawings. As a project manager, Jay coordinates the design, including construction specification development and cost estimating, communicates with cilents, and coordinates design activities with the civil, structural, mechanical, electrical, and 1&C design disciplines. During the construction phase, Jay manages shop drawing & equipment submittal reviews, RFls and change order processing, and startup & commissioning activitles. 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.
ICENSE CERTIFICATION Jay's Relevant Experience:
Civil Engineer,
CA #C75672 • Chlorine Conversion Project at Water Treatment Plant, City of El Centro, CA.
Project Manager for conversion of gaseous chlorine disinfection system to 12.5% sodium hypochiorite disinfection system at Water Treatment Plant.
EDUCATION
Disinfection Conversion from Chlorine Gas to Sodium Hypochlorite at Water Treatment Plant, PHD, Candidale.
University of Southern City of Brawley, CA.
Project Manager to prepare preliminary design report for conversion of existing gaseous chlorine system California (Completed 4
to sodium hypochlorite system for chloramine disinfection at Brawley Water Treatment Plant.
Years In Ph.D. Program)
• 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA.
MS. Environmental Project Manager for conversion of onsite hypochlorite generation systems to bulk liquid sodlum Engineering, University hypochlorite and ammonia for chloramine disinfection at five water reservoir sites.
Of Southern California
2016-17 Reservolr Management Systems Replacement, Moulton Niguel Water District, CA.
MS. Environmental Project Manager for conversion of onsite hypochlorite generation systems to bulk liquid sodium Engineering, Yonsel hypochlorlte and ammonia for chloramine disinfection at three water reservoir sites.
University, Korea Reservoir Management Systems Replacement Project, Santa Margarita Water District, CA.
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, Metropolltan 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 sulfuric acid, caustic soda, alum/ferric, sodium hypochlorite, ammonia, and fluorosilicic acid.
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WATER BRI SASTRUCTURE CUCINFIES
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorita Food System Sam Lee, PE | Process / Mechanical Engineer
Sam Lee has 18 years of diversified civil, sanitary, mechanical and process engineering and design experlence with water and wastewater Infrastructure projects. His experience Includes facility Investigation and evaluation, condition assessments, documentation of as-bullt 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 egulpment. Through a wide variety of water infrastructure engineering projects, Sam has acquired diverse design and inter-discipline coordination sklils.
Sam's Relevant Experience:
• Water Treatment Plant Chlorine Conversion Project, City of El Centro, CA.
Civil Engineer
CA #C 78939 • Reservoir Management Systems Replacement, Santa Margarita Water District, CA. • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA. • 2016-17 Reservolr Management Systems Replacement, Moulton Niguel Water District, CA.
MS. Environmental
Engineering, University
of Southern California
BS. Environmental
Engineering. Yonsei
University, Korea
Michael Assadourian, PE | Electrical and I&C Engineer
Michael Assadourlan has over 33 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 refinerles. He has in-depth knowledge of power distribution and lighting systems, both NEMA and IEC standards-based; motor controls and varlable frequency drives; coordination with power & utility companles; and SCADA and radlo/ microwave systems. His work experience Includes P&ID development, electrical system condition assessment, ETAP analysis, load flow and short-circult analysis, and protective device coordination studies. He has extensive experience in retrofitting existing facilties with new power and controls and resolving construction-related problems. Michael has provided a wide variety of construction support services, including equipment & shop drawings revlew, processing of REls, resolving construction issues, and electrical system commissioning and start-up.
LICENSEICERTIFICATION
Electrical Engineer.
CA #E14390 Michael's Relevant Experience:
CONG • Water Treatment Plant Chlorine Conversion Project, City of El Centro, CA.
MS. Industrial and
Systems Engineering & • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA.
Management, University
• 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA. of Southern Califoria
• Treatment Plant and Electrical System Improvements (FY2013 Southside Plant Improvements), J. B. Latham BS. Electrical Engineering.
University of Southern Wastewater Treatment Plant, South Orange County Wastewater Authorlty, CA.
California
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WATER IWFRASTRBCTURE ENGINEERS
Panic 6. lee-ro.com
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed Syslem to Liquid Hypochlorite Feed System James Gingrich, PE, SE | Structural Engineer
James Gingrich is a California registered structural engineer with more than 37 years of structural analysis, engineering, design, constructabillty 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, selsmic 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 Selsmic Upgrades, and Oxidation Retrofit (Ozone Disinfection) Projects for MWD's Mills, Jensen, Weymouth, Skinner, and Demer Water Treatment Civil Engineer, CA #C34701 Plants.
Structural Engincer.
CA #S3023 James' Relevant Experience:
• 2017-18 Reservolr Management Systems Replacement, Moulton Niguel Water District, CA BS Civil Engineering.
California State Polytechnic • 2016-17 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA University. Pomona
• Oxidation Retrofit Projects (ORPs) at Five Water Treatment Plants, Metropolitan Water District of Southern Graduate courses in
Structural Dynamics & California, CA
Advanced Structural
Analysis, Cal State Los • Filter Building and Filter Complex Seismic Upgrades, Weymouth Water Treatment Plant, Metropolitan Water Angeles District of Southern Callfornia.
Ramesh Bachuvala, EIT | Site Civil / Utility Research
Ramesh Bachuvala has over 24 years of experience in planning, design, and construction of municipal water and wastewater infrastructure, including water mains, booster pump stations, flow control faciiities, 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 utilty search and coordination with utilly companies; hydraulic and hydrology analysis; pipeline plan and profiles, WOMP/SWPPP reports; traffic control design; and ROW and easement analysis and coordination.
Ramesh's Relevant Experience:
CENSE CERTIFICATION • 2017-18 Reservoir Management Systems Replacement, Moulton Niguel Water District, CA EIT. A143514
• 2016-17 Reservolr Management Systems Replacement, Moulton Niguel Water District, CA • District 2 Water Main Replacement Project, City of Pomona, CA MS. Geographical
Information Systems, • Slagecoach Park Reclaimed Water Line, Clty of Corona, CA FH-University of Karlsruhe-
Germany
BS, Civil Engineering
Osmania University, India
LEE+RO
WATER IRFRASTRUCTURE CHINEERS
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Fage 7
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System John T. Young, PE 1 Technical Advisor & QA/QC
John Young has 40 years of mechanical design experlence. 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 (silde gates, roller gates, fixed cone valves) replacement projects.
John's Relevant Experience:
• Sodlum Hypochlorite Storage and Feed Systems for the Copper Basin Reservoir and Lake Mathews Reservolr and Forebay, Metropolitan Water District of Southern Californla.
ERTIFICATION • Diemer and Weymouth Chlorine Containment Projects, Metropolitan Water District of Southern Callfornia.
Mechanical Engineer.
CA 2M026419 • Jensen Oxidation Retrofit Project, Metropolitan Water District of Southern California. • Copper Basin and Gene Wash Dam Discharge Valve Replacement Project, Metropolitan Water District of BS. Mechanical Southern Callfornia.
Engineering, University of
California, Los Angeles
Charles Ro, PE | Principal-In-Charge
Charles Rohas 24 years of highly diversifled water and wastewater facilty design and construction management experience. He has served as Principal-in-Charge, project manager, project engineer, construction mahager and construction inspector for treatment plants, pump stations, storage reservoirs, and water mains and sewer projects. Charles has meaningful design experience with anaerobic digestion, gas handling, and dewatering; pump station; and odor control facilitles. Charles has construction management and inspection experience with treatment plants, sewers and recycled water plpeline projects. Charles' field experience working on a varlely of water and wastewater infrastructure projects lends a broad perspective on design and construction projects.
Charies* Relevant Experience:
ICENSE CERT • Reservoir Management System ai Zitnik Reservoir Project W.O 2484, Laguna Beach County Water District, Civil Engineer. CA CC80535 CA.
• Chemical Systems Rehablltation at Plant No. 2, Orange County Sanitation District, CA.
BS. Civil Enginzering.
California State University. • Seal Beach Pumping Station Replacement, Orange County Saltation District, CA.
Los Angeles
• Mills Water Treatment Plant, Chemical Systems Upgrades, Modules 1 & 2 Rehabilitation and Single Point Injection Facility Upgrades, Metropolitan Water District of Southern California, Riverside, CA. © LEE+RO
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Approach Section 3
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System
3. UNDERSTANDING AND APPROACH
PROJECT UNDERSTANDING three application points- the reservolr Inlet, the reservol outlet, and the recirculation pipe, Based on discussions with City personnel, the target chlorine residual level Is 0.4 mg/L, as the purpose for adding The City of Calexico (City) owns and operates a Water Treatment Plant chlorine at the EWR is to boost chlorine residual levels prior to (WTP) and the Eastside Water Reservor (EWR). The WTP recelves Its distribution. At the design flow of 6 MGD, two (2) double wall type, water supply from the Colorado River through the Imperial Irrigation 250-gal capacity storage tanks are sufficient to meet the target District's (lID) canals. The City's WTP has a design capacity of 14 million chlorine residual level. gallons per day (MGD), with an average dally demand of 9 MGD and current peak flows of 7-8 MGD. The EWR has a design capacity of 6 The most common tank materlals used for sodium hypochlorlte storage MD, with an average dally demand of 1.25 MGD. The WTP and EWR are fiberglass reinforced plastic (FRP), high density linear polyethylene both currently operate a gaseous chlorine water disinfection system to (HDLPE), or high-density cross-linked polyethylene (HDXLPE). We disinfect the water prior to discharging it Into the City's supply lines. recommend a HDLPE tank because (1) it is more economical than The City has expressed concern regarding the usage of chlorine gas as a FRP tank, and (2) no cracking issues from UV radlation due to an a disinfectant, as chlorine gas is toxic and poses dangers to the public Indoor installation. These will be further evaluated and presented in and operations staff. Since the WT Is located adjacent to residential the Feasibility Study/Preliminary Design Report. areas, the risk of chlorine gas exposure to the public is greatly increased In the unlikely event of a large leak. LEE + RO's understanding Is that Chemical Pumps the City desires to convert from a gaseous chlorine system to a 12.5% bulk sodium hypochlorite disinfection system. LEE + RO recommends peristaltic pumps for hypochlorite injection to a pre-clarifier, a pre-filter, and a clearwell at the WTP, and for injection to TECHNICAL APPROACH the reservolr Inlet, outlet, and recirculation pipe at the EWR. Peristaltic pumps are compact in size, have low capital costs, have a high turndown ratio, and are relatively easy to maintain. There are fewer In this section we discuss our approach to Implementing the desired components (e.g. tubing) in contact with the chemical. They come Improvements. A summary matrix of the preliminary design criteria with leak detection for tubing fallures, and they do not experience that is described in more detall in this approach Is included as Exhibit pump priming Issues. Their disadvantages inciude a limited discharge 3-1 on the following page. pressure (less than 125 psi or 290 feet of head), the feed rate slowiy diminishes over time due to degradation of the tubing, and the
12.5% Sodium Hypochlorite Storage Tanks tubing must be replaced at regular Intervals to prevent fallure. The recommended peristaltic pump is equipped with a tube replacement Water Treatment Plant alarm function, which will alarm and notify 0&M staff to replace the tube before It fails, Additionally, our preliminary evaluation Indicates LEE + RO's approach for storage of the bulk sodlum hypochlorite at the that total dynamic head losses at injection points are not significantly WTP will be based on a minimum of 14 days of on-site storage. Based high, and the recommended peristaltic pumps can be used. on discussions with Clty WTP Operations staff, the WT's summertime maximum chlorine consumption is currently 260 pounds per day (ibs/ Piping and Valves day). Each pound of chlorine gas is equivalent to one gallon (gal) of
12.5% sodium hypochlorite solution, so the equivalent 12.5% sodium Chemically compalible materlals, such as polyethylene (PE) tubing hypochlorite solution would be 260 gals/day. As such, at a peak flow or PVC, should be used in sodium hypochlorte applications. Inside of approximately 7-8 MGD, the WTP would consume 260 gals/day the chemical bullding, the chemical piping will be rigld PVC between of sodium hypochlorite, so one (1) 4,000-gal capacity storage tank the pump and storage tank, whereas flexible PE tubing will be used will provide sufficient storage (260 gals/day x 14 days is 3,640 gals). between the pump discharge and the injection points at WTP and However, to accommodate the full design capacity of 14 MGD, as well EWR. Piping located outside of the chemical bullding containment area as to provide redundancy, LEE + RO recommends two (2) double wall should be double-walled, Exposed plastic piping located outside of the type, 4,000-gal capacity storage tanks for a total storage volume of bullding, Including double-walled containment piping shall be CPVC, 8,000 gals. which exhibits better UV resistance than PVC. All buried plastic piping will be PVC. For the hypochlorlte system, we recommend using PVC Eastside Water Reservoir vented ball valves to vent any off-gasses and prevent the valve from exploding.
For the EWR, LEE + RO's approach for the storage of the bulk sodlum hypochlorite will also be based on a minimum of 14 days of on-site storage. At the EWR site, the sodlum hypochlorite will be Injected at LEE+RO
WATER INFRASTRUCGURE ENGINEERS
City of Calexico
Chlorite Conversion Project -- Gaseous Chlorine Feed System to Liquld Hypochlorite Feed System Exhibit 3-1. Preliminary Design Criteria
Water Treatment Plant Eastside Water Reservoir Notes
(WTP) (EWR)
DESIGN BASIS
Design Capacity, MGD 14
Sodium Hypochlorite Injection Pre-clarifier, Pre-filter, and Reservoir Intet, 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 4,000 (102" × 178") 250 (34" × 83") HDLPE Tank, Min. 2 Weeks Storage Height)
Type of Tank Double Wall Double Wall Concrete Secondary Containment Not Reg'd
CHEMICAL PUMPS
No. of Metering Pumps 5(4 Duty and 1 Standby) 4(3 Duty and 1 Standby) 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 Fill Connection
5. Safety Shower In Chemical Buliding
6. Back Flow Preventer for Safety Shower
Construction Sequencing and Chemical Building system, demolish the existing gaseous chlorine storage and Modifications feed system.
5. Modify the existing chlorine storage room for installation Water Treatment Plant of the new hypochlorite storage tanks and construct a new concrete foundation for two (2) double wall type 4,000-gallon LEE + RO proposes to install two (2) 4,000-gallon storage tanks in the hypochlorite storage tanks. existing chlorine storage room and four (4) chemical metering pumps in the existing chlorine feed room. Currently, the chlorine storage room 6. Instail two (2) storage tanks In the existing chlorine storage room.
contains ten (10) one-ton chlorine cylinders, scales, hoists, chlorine leak detector and piping. The chlorine feed room contains five (5) 7. Reconnect the piping to the chemical feed pumps. Remove wall mounted chlorine feed systems. For a bulk sodium hypochlorite the temporary hypochlorite storage tank and piping. storage and feed system, the existing chlorine gaseous storage and feed system, Including a gas scrubber system, will be demolished The proposed 4,000-gallon hypochlorite tank Is 8.5 feet in diameter, and the existing door in the chlorine storage room is 10 feet wide, once the new hypochlorite system Is commissioned. The proposed This provides sufficient clearance to accommodate the installation of demolltion plan for the WTP Chlorine Bullding is shown In Exhibit 3-2. the new storage tanks, so no modifications to the existing door and The City desines the WTP to remain operational during the opening are anticipated. construction and continue to Inject chlorine into the plant. Therefore, The thickness of the existing concrete floor in the chlorine storage the gaseous system will remain in service during the conversion to room is 6 Inches. The total welght of 4,000-gallon hypochlorite a bulk hypochlorite system. LEE + RO recommends the following solution and a HDLE tank is more than 36,000 pounds. To prevent construction sequence.
the tanks from overturning during a seismic event, a thicker concrete
1. Install the hypochlorite feed pumps in the existing chlorine foundation is required. LEE + RO recommends saw-cutting the feed room. existing concrete slab and constructing a new 18-inch thick concrete
2. Install a temporary hypochlorite storage tank in the existing foundation for the hypochlorite storage tanks. Structural calculations In accordance with the latest seismic design criteria will be provided chlorine feed room or outside the bullding.
and presented in the Feasibility Study/Prellminary Design Report. The
3. Test the liquid hypochlorite feed system and inject
proposed sodium hypochlorite storage and feed system layout at the hypochlorite into the plant. WTP Is presented in Exhibit 3-3.
4. After successful startup and operation of the hypochlorite
City of Calexico
Chlorine Conversion Projecl - Gaseous Chlorine Feed System to Liguld Hypochlorite Feed System Eastside Water Reservoir LEE + RO will also provide updates to the City's Operation Manual per Task 10 In the RFP by coordinating with the City and the Department LEE + RO proposes to install the two (2) 250-gallon storage tanks of Drinking Water at the State Water Resources Control Board as and the four (4) chemical metering pumps near the walls inside of necessary. the existing pump room. The chlorine room currently has no space to install the pumps and tanks during construction. Since the existing Electrical, Instrumentation and Control the equipment cannot be removed until the new liquid hypochlorite Water Treatment Plant completed, the existing chlorine gaseous storage and feed system The existing chiorine system is currently fed from "Panel LA", which is shall be demolished, The proposed demolition plan for the EWR Is a 100A 208/120V three-phase service. "Panel LA" is powered from the shown in Exhibit 3-4. existing "Panel HA", which is fed from the WTP's 1200A 480V three- phase distribution board, "MCC-G", Via a 30 KVA transformer. However, LEE + RO recommends the following construction sequence: to keep the chlorine system operational during the construction and accommodate the new loads for hypochlorite storage and feed
1. Install the hypochlorite feed pumps in the existing pump room. system, LEE + RO recommends providing a new 100A 208/120V single-
2. Install a temporary hypochlorite storage tank in the existing phase panel fed directly from "MCC-G" via a new transformer. LEE + RO pump room. will conduct a detalled assessment of power requirements and power
3. Test the liquid hypochlorite feed system and inject avallabllity at the plant with results provided in the Feasibility Study/ hypochlorite into the EWR piping.. Prellminary Design Report.
4. After successful startup and operation of the hypochlorlte The existing chlorine residual analyzers are located at the filter Inlet and system, demolish the existing gaseous chlorine storage and outlet (le. clearwell) and control the chlorine dosage. For hypochlorite feed system, Including the water booster pump system. Injection, the new chemical metering pumps will recelve the residual
5. Construct new concrete foundation for two double wall type chlorine concentration from the analyzer and automatically control the hypochlorite dosage to inject hypochlorite and maintain the target storage tanks in the pump rom.
residual concentration. LEE + RO will work with the City to develop
6. Install two new hypochlorite tanks. the control philosophies and Incorporate the necessary programming
7. Reconnect piping from hypochlorite storage tanks to feed requirements into the specifications for Inclusion in the Contractor's pumps. scope of work.
8. Remove temporary hypochlorite tank and piping. Eastside Water Reserv The proposed hypochlorite tanks are approximately 4 feet in diameter. The existing chlorine system's "C12 Booster Control Panel" and "CI2 Since the existing pump room has a door/wall opening on the north Scrubber Control Panel" are currently fed from Switchboard "S", side of the bullding, there is sufficient opening width accommodate which is a 1200A, 480V, three-phase distribution board located in the Installation of the two tanks.
electrical room of the existing bullding. An existing "Panel A" is fed from The new 250-gal storage tanks will be Installed on an approximately Switchboard "S" via a 37,5 kVA 480-120/240V step down transformer. 9-foot by 5-foot concrete foundation. Since the new storage tanks The new hypochlorite feed pumps and equipment will be fed from "Panel A1", which is fed from "Pane| A". LEE + RO anticipates "Panel At" are significantly smaller than those required at the WTP. the existing can accommodate the loads from the new hypochlorite system. LEE concrete slab is likely sufficient to prevent overturning of the tanks + RO will conduct a detalled assessment of power requiréments and in a selsmic event. Further structural analysis will be provided and presented in the Feasibility Study/Preliminary Design Report. The power avallability at the EWR and provide the results in the Feasibility proposed sodium hypochlorite storage and feed system layout at the Study/Preliminary Design Report.
EWR Is presented in Exhibit 3-5. • The existing chlorine residual analyzers are located at the reservoir Inlet and outlet, as well as from a sample line from the recirculation Regulatory Support and Fire Authority Permit piping. For hypochlorite Injection, the new chemical metering pumps LEE + RO does not anticipate that CEQA, a NPDES Construction General will recelve the residual chlorine concentration from the analyzers and Permit, nor an Imperlal County Air Pollution Control District permit automatically control the hypochlorite dosage to inject hypochlorite and maintain the target residual concentration. LEE + RO will work will be required for the project. However, the local Fire Authority will with the City to develop the control philosophies and incorporate require a plan check for the chemical storage tanks. LEE + RO Will the necessary programming regulrements into the specifications for coordinate with the local Fire Authority to prepare the application and the plan check packages for submittal to local Fire Authority at the inclusion in the Contractor's scope of work. 100% design phase. The lacal Fire Authority Inspector will Issue the permit after confirming the chemical storage facility is constructed in LEE+RO accordance with the approved plans.
WATER IAFRASTRUCHURE ESGINEERS
Poge 11 tee-ro.com
CHine Comes Prosa - Cases Cler cos an a Lead Hose on frien Exhibit 3-2. Water Filtration Plant Chorine Building Demolition Pian LEGEND:
CHLORINE STORAGE ROOM
C) WATER BOOSTE
ELECTRICAL BOOM
PLAN
SCALE: V8 = 1-0°
@ LEE-RO
Pa01:
Exhibit 3-3. Water Filtration Plant Chlorine Building Plan
ERASCAR LEVEL SENSO -
400 ca. sat TO DREA RO
CHLORINE STORAGE ROÓM
SOST LET CASE -
CHLORINE FEED R
X
ELECTRICAL ROOM
PROPOSED CORE CRON SEOUS
2. INSTALL HYPOCHLORITE FEED PUMPS, INSTALL HYPOCHRONTE FEED PUNPS.
PLAN
SCALE: 19* - 1.0° 3. TEST LIQUID HYPOCHLORITE SYSTEN AND BJECT HYPOCHKONTE TO WTP
4. AFTER SUCCESSFUL OPERATION OF HYPOCHLORITE FEED SYSTEM, DEMOLISH DUSTING GASEOUS CHLORINE SYSTEN I SEE IS A RESIS CASE SCALE INS CONSEN: NEW COETE CONSTRUCT HER CONGRETE
8. MSTALL THO HYPOCHORITE LINES.
7. RECONNECT RING FROM HYPOCHLORITE STORAGE TAMES TO FEED PUMPS.
8. REMONE A TENORARY HYPOCHLORTE TAHK AHD PIPING O LEE+RO
Cy oi Coluke
OMene Comesrsn Prosa - Caraoa: (Nonne Faed Sutanlesd frontete ford Satte Exhibit 3-4. Eastside Reservoir Pump Station Demolition Plan LEGEND:
III ToBe Demolsied
WLXA,
- (7 corsa, medls
RAune
SURERATE ROO11 FLECTRICAL ROO!
• SE CODT
Mnokd
cU-2
cu-I
_ PLAN
SCALE: 18ª = 1:0°
& LEE+RO
P3 14 storacor
City el Coltaico
None Conversion Praged - Gasus CHeene Food Systen ho Liged HypocHoris Fred System Exhibit 3-5. Eastside Reservalr Pump Station Sodium Hypochlorite Feed System Plan
(E) GENERATOR
O CONSTRON
I INSTALL HIPOCHLORITE FEED PUMPS.
2. INSTALL A TEMPORARY HEPOCHLORITE, STORAGE TURE I PUMP ROCH
4.AFTER SUCCESSEUL OFERATION OF HYPOCHLORITE FEED SYSTEM, OEMOLISH EOSTING GASEOUS CHLORNE FEED AND STORAGE SYSTEM
INCLUDING WATER BOOSTER PUMP SYSTEM
5. CONSTRUCT NEM CONCRETE FOURDATON FOR TWO DOUBLE WALL TYPE STORAGE TANKS IN THE PUMP ROCH •. INSTALL THO HYPOCHEORITE TANKS
7. RECONNECT PIPENG FROM HYPOCHLOR TE STORAGE TANKS TO FEEO PUMPS.
PLAN
SCALE: 316-1:05
@ LEE+RO
Pay 15
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed Systom to Liquid Hypochlorite Feed System SCOPE OF SERVICES 50% design submittal, 90% design submittal and the 100% design submittal. Project deliverables will be In the format and quantities specifled In the RFP and shall include the following:
LEE + RO acknowledges the scope of services specifled in the RFP and confirms that the LEE + RO team will provide the specifled services • Agenda and meeting minutes for five (5) meetings in accordance with RFP scope of service tasks, The scope of service • Draft feasibility study/prellminary design report tasks as provided In the RFP have been used to develop a prellminary • Final feasibility study/preliminary design report project schedule in Section 4, and our fee estimate, which is included • 50% design submittal (Plans and Technical specifications) as Exhlbit 1, In a separate envelope.
• 90% design submittal (Plans and Technical specifications) Project Deliverables • 100% design submittal (Plans and Technical specifications) • Final contract documents
LEE + RO will prepare and submit a complete set of Contract • Estimates of probable construction costs at each submittal Documents (Construction Drawings, Specifications and Engineer's phase Estimate of Probable Construction Costs). We have estimated that a • Permit applications and plan check packages for local Fire total of 40 drawings will be required for this project. A preliminary Authority project drawing list is Included on the following page as Exhibit 3-6. > Addenda for design related Issues; pre-bld meeting agenda LEE + RO will produce feasibility study/prellminary design report and and minutes final design documents for the chlorine conversion project and will Preconstruction meeting agenda and minutes
make the following design submittals. We have also allowed for design RFI responses and submittal review comments
workshops following the draft preliminary design report, following the As-bullt record drawings
Exhibit 3-6. Preliminary Drawing List
Sheet No. DWG No. Drawing Title / Description
G-1 Title Sheet, Vicinity Map and Location Map
2 G-2 General Notes and Drawing Index
G-3 Abbreviations, Symbols and Cross Referencing
4 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 7 D-4 EWR Water Booster Pump Demolition Plan and Photos D-6 WTP and EWR Miscellaneous Demolition Detalls (Piping and Injection Qullls) g C-1 WTP Overall Site Plan and Yard Piping Plan
10 C-2 WTP Clarifier B and C Inlet and Effluent Hypochlorite injection Detall 11 C-3 WTP Clearwell Hypochlorite Injection Details
12 C-4 EWR Overall Site Plan and Yard Piping Plan
13 C-5 EWR Hypochlorite Injection Details at Inlet, Outlet and Recirculation Piping 14 C-6 Piping Trench and Standard Civil Details
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 Demolltion Plan - Existing Floor Saw Cut Plan & Detalis 18 S-4 WTP Sodium Hypochlorite Storage Tank Foundation Plan and Sections 19 S-5 WTP Sodium Hypochiorite 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 Sodium Hypochlorite Storage Room Plans
22 M-2 WTP Sodium Hypochlorite Storage Room Sections and Detalls LEE+RO
WALEE IFRASTAFCIURE EHGINEERS
City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed System to Liguld Hypochlorite Feed System Sheet No. DWG No. Drawing Title / Description
23 M-3 WTP Sodium Hypochlorite Feed Room Pians
24 M-4 WTP Sodium Hypochiorite 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 E-1 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 Plan
32 E-5 WTP Sodium Hypochlorite Storage and Feed Rooms Electrical Plan 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 Condult Schedules
37 E-10 Electrical Details 1 - Control Panel Support, Condult Entry, Conduit Stub-up 38 E-11 Electrical Detalls 2 - PLC Cabinet, Panel Wall Mount, Level Indication Panel 39 1-1 P&ID - Instrumentation Legend, Symbols, and Abbreviations 40 1-2 P&ID - WTP Sodium Hypochiorite Storage Tanks and Chemical Feed Systems 1 of 2 41 1-3 P&ID - WTP Sodlum 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 43 1-5 P&ID EWR Sodium Hypochlorite Storage Tank and Chemical Feed Systems 2 of 2 ASSUMPTIONS & CLARIFICATIONS 3. For the fee proposal, we have assumed 25 Contractor shop drawings submittals at a review/approval time of 3 hours per LEE + RO's technical proposal and the associated fee proposal are submittal and 10 Contractor shop drawings re-submittals at a based on the following assumptions and clarifications. We welcome revlew/approval time of 2 hours per re-submittal (and additional the opportunity to discuss our proposal with the City and should we clerical time. have misinterpreted the RFP's scope of services, LEE + RO is willing to 4.
For the fee proposal, we have assumed a total of 5 contractor make adjustments to our scope and fee proposal, accordingly.
Change Orders, with a review time of 5 hours per Change Order
1. We heve assumed that any permits, Including CEOA, NPDES and additional hours for CADD and clerical time.
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 effortif 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 RFis at a review time of 3 hours per RFl and additional hours for CADD and clerical time.
LEE+RO
WATER I EASTRCCTUTE INSINCEAS
Schedule Section 4
4. SCHEDULE
contact documents before February 8, 2027.
Exhibit 4-1. City of Calexico Chiorine Conversion Project Schedufe o TashNama Duration Start Treish
MM SV13/25 P12/1/18
Cay Council Aproval of Contract MM$/13/25 fr13/15/25
M1$/22/28 Tea 8/18/28 Phasel: Feasbility Study/Prelminary Design Report (PDA) 1 day
Ste Vet and investiation 1 dr Ter 5/26/26 Tue 9/26/24
13 doys Tue 7/1426
Tue 7/24/26 |
Dratt Fensdisty Study/?CRemen ty (ky (2 Wiceis) 10 deys Wed 7/15/26 Tue 7/24/26 1 %ay 90 77826
Tha 7/30/25 Tue 8/E8/26
12 Submit Fissifenshty foudr/7on Tue 8/18/26
8/18 & Sutmit Final Feasiblity Study/POR
118cm
-
50% Design PuSe 30 days Wed 8/19/26 Nice 2/30/26
15 Submt 50% Desig WeS 9/30/8
3/30 / Submit 50% Design
50% Delen denton by City (2 Weeks) 10 dmy Thu 10/1/26 Wed 30/14/26 17 18 poK Design Prese 28 das Fr$ 80/16/26 | Wied 11/23/26 Wed 11/25/28 Wed 11/75/26
11/25 o subinis 50% Desien
20 9607 Man 11/80/28 T 12108
S0%Dnian Revizer Workshop I des Ir 12/11/26 fil 32/11/28 fortale s restory deres Irtermetad and fator. No 12/475 Non 3/11/27 aject Gry of Calmoc - Wabe
Morine Conversion Project Gansous Chlorise Food Symam to Lique sole ...... Sotoy Hypoctiorite Feed System
Peos lof 2 keracon
City of Caleaico
ClicTcA Convarson Project - Giscous Chiane Foso Syslém to Liqu hypachtrita Fond System Task Nace Sari Finish
puraton M ( 2 M i M 10 | 50 0 0 / D I 12 | M :10 ) M M A | X0 04 RO / OC IA 18 | MA N IM.I) 100 Drips Prose 20675 Mon 12/14/26 Men1/1v27
24 setnie 100%ceign otos Mon 1/11/27 Mon 1/11/27
1/11 &/ Submit 100KDesign
100% Design Reviea ty Cay (1 Weck) 3 dmg Tue 1/12/27
Ika Bu Cortrec Docunent Derion Paso Mes 2/1/27
Ital en cocact Docinent Sotnkul Mon 2/1/27 Mon2/1/27
28 mist Cier tor Pule Mestinec Ozuesch, and 14dm Wed 1027 mentacion to Cey Courc
29 Phone Ie Old Phana (lesame 1 Macths ald Acventnasg sa deys Wed 2/13/27 m4/977 Phase Ill: Bid Phase (Assume 2 Months Sid Advertisement) Anettis BaMeie 16y Wed 2/97/27 Wred 2/17/27
31 Patose Ar Sercum biedri WN 271772 Slan 3/4/27
BOzening O dns m43/27
4/9 %.Ad ppaning
bm M. Censtnetien Phone (Aseane 9 mond! 100 tars Phase IV: Construction Phase (Assume 9 months Construction Period) amtraibn Prriod
34 Corteset Masd to Contrater o dars Wed S/5/27 Wed s/5/27 5/5 % Contract Award to Contractor
Me Constaxton thettine Ure5/10y27 Mon S/10/27
35 oms kovae Mon8/16/27
BH Response 1505z Hashim Tra 92
AsPa dine Orders 60 smr Unthwn Tue 21/23/27
Final Walk-Thecoer 1 trr fn 2/2N2s
40* Corotruction Comaleton odmy TH1/22/23 Tr 2/23/13
1/28 é Construction Completion
Pace V: Pest Contrucles Phase 14 Cag Tue 4/4/23 162/14/23 Phase Vi Post Construction Phase Artoll Recced Donnings Tue 2224 n28328
Lotte Oswatta Mmus Aim 14dms Tus 7/1/ Er 2/18/28
ject Gry of Cale ..... Maa Proger
orina Comarsion Project Gaceous CAbrine Ford Synton bo le .... Kon Hypoxtiorite Feed System
Repe ss
haoraror
Experience Section 5
with similat design clements including chemical storage and metering systems and monitoring and controlling of chemical dosing, regulatory coordinallon and permitting, controls logic, automation and SCADA Inlegration, as well as miscolaneous electical and mechenical improvements. Also Included as Exhiblt 5-2 is a matrix identifying several of LEE + RO's similarly relevant projects.
Exhibit 5-1. Relevant Project Experience of the Firm
Water Treatment Plant Chlorine Pruliminary Design Report. Disinfection 2017-18 Reservole Management Systems 2016-17 Reservoir Management Systems Reservoir Management Systems Sodium Hypochlorite System for Conversion from Chlenn Carto Soim
Conversion Project Replacement Project Replacement Project Replacement Project the J. B. Latham Treatment Plant Hypochlorite at Water Treatment Plant
Moulton Higuel Water Distict Moulton Niguet Water Distikt Santa Marganta Water District Sooth Orange County Wasfewater City of El Centro: City of Brawicy
The Cay of &i Centro Water Treatment Plant LEE + RO provided the preminary design LEE • RO is providing engineering, design, and LEE • RO provided enginasring, LEE + RO provided engineering and design LEE + RO provided preminary and (WTP) disinfects the thered water with gaseous report for conversion of gascous chiarine constructisa support servites for the conversion of construction support senices for the conversion of. servicesfor the conversion fon-ste hypochlorite final design and construction phase on-sie broccharile ceneration sistems and ligula generation systems and liquid ammonia engineering services for retarn actlvated systein to burk sedium hypochone system to on-site hypochome generation. systs and woun supply system. However, the Oty has concernt the Brankey Water Treatment Plot. The Plant ammonda syatens to buk liquid sodium hypochorte ammonia systems to bulk liquid sodium hypochlorite systems to bulk houd sodium hypochionle can post colana wat uted cherine gas for chiarication (Esinfectinn) and armis chloramine defection systems al and ammonis chlorasine disinfection systems at three and ammonia chloramine disinfection systems chlorination systems at the J.B. Latham as chiocine gos is loxic and poses dangers to the of product water. The elsting chicrine system five (5) cilferent water reservolt sites in the MNWD 3) dinerent wiler reservoir siles in the mid serve at two (2) different water reservoir sites in Mostyalel Reclamation Plant. public and operations staff. LEE + RO provided consisled of one-ton chlorine cylinders stored service ares. (0) 4 MG Croon Valey Reservoir. (2) alea, (1) 10 MG East Aleo Creek Reservor, (2) Serile ThA Sill care area is Me a pda lone purpose of this project was to replace the preliminary, final dosign, and construction la the chlotine storace rcom coupped with 2 MG Highlands Reservelt, (3) 2.5 MG Msequerite Reservoirs - 209. x 1.125 MG, and (3) Mathis Helle Gol 1 Resenoir, and (2) 1.3 MG Estado Reservoir, the existing chlorine gas chlorination phase engizoring sorries for converting the an overhead crane, faut entorieators, and a Reservoir, (44 MG Msuhan Peak Reservow, and and (S)5) Reservoirs- 1ea. x 175 MG and 1es. x 4 MG. Esch site SMWD performed extensive pilot testing of system with a sodlum hypochlorite MG Pasilk Park Reservoir. Esch site contains a polabla contalasone or two polable noter storagereservoirs thot Sninfection systems and docided to change lo storage and feed system. The profect cateous chlotine olin pass em to des chor ors super tamine commo bulk sodium hypochlorite disinfection system. was estimated behween 300 to 700 lastley water storage reservoir that suppfies domestle supply domestic water to the communilies. The water 12.5% sodium hypochloite and 38% ammonjum included an 8.000 galon capacily wuter to the commucitica. The woter b disinfected İs disinfected utilizing chloramices in the reservoirs lo sodium hypochiorite storage toak. in colectin to cons oran exes
RO include designs lor construction of new bulk
chiotine fon-cylinder storage butting into a the City desired to convert the chlarine gas to utilizing chlorarines in the reservoirs to maintals the maintain the residual chlorine concentration prior to mut okalaonor chameal metering
12.5% sodium hypochkorite storagebullding. The sodium hypochlorite. The scope of work miss to residual chlorine concentration pelor to delivery to delivery to the communities. Each disinfection facity sodium hypochlorite and antrucium sultate spill containment strecture, stems in nor taunnon cachelo
prepare a preliminery design report identifyting chemicel and non- potable water piping, of double-contaimed HDPE storage tanks. advanlages and disactantages and Ale cycle new bulk sodism hypochlorite and ammonia storage storage and ferding systems and includes a masonty chemical storage tonks, pumps, analyzers and valve catka, and instrumentation controllers, connecled piping, valves, electical The profect also cost comparison of the conversion. The Cau and feeding systems and licludes a masonry block Block chemical storage building with separate room: control system he asino reconne
existing chlorinators to peristaltic chemikat feed considered an on-sile hypochiorile generation chemical storage butting with separate rooma for I for each chemical, ventfation and split system AC pump skids and sssociated electrical systems In addilion to the bulk hypochlorite storage each chemical, vuntdation and splitsystem AC units for units for the chemical reoms, storage tanks, cheerical facily is not equipped with an RIAS buildng conting chicsine Injection points, reuse and a new RMS balding will be constructed. of existing cheovine leed piping. and controls, now chemical Infection plping to cpllon. The Report (with 30% design) evaluated the chemical rooms, storage tanks, chemical pamps pumps and piping, reservole misers, analyzers and Both reservol siles wil requite a sodium two Injeclion points(l.e. two clarifiers inlet pipes the on-sile and bulk storage options Including and piping, resarvoir mber, andyser and dorage dotage coatrol, chemical leak detection systems. hypochloete tank farm inchiding double-wall measones to control off gassing lo the and a clearwell, existing bullding structure storage tanks, metering pumps, piping and contic, chemical eat delectan systems, sampl chlorine pipe. sotate tack tensor shortute chemkal lE
modifications and modifications to electial, necessary electrical upgrades. and drein piping, electical, process inpritoring and and control via SCADA, showerleyenashi stations, and station, ok. The design inclades all cemponents sile selities. Site madications for the East Aliso Creek Ist complete operational the City in coordinating with the Division site uliblies. Site modilicatoas for the Hitlands and chemical building include grading of the stope and a minor mananomiet stoms. The erati of Drinking Water (DDW) at the State Water Marguerite chemical building include grading of tee retaining west. Mathis Helle Gal reques temporary Tank Shaik miver of the Estado Reservok will be Resources Control Board for final plan approvel slope, protection of existing tree, modification of chain pawer dirtng constraction to mahain operation of the replaced with a new PAX mixer. and WTP Operation Plan updale. Enk fence, and a retaining wall culating dunfection facity.
Client Reference: Client Reference: Cient Reference: Cilept Rifierce: Chest Riference: Chest Refriess:
Clly of El Centra Cly af Brandy 4 Water Delici on Nigid Water Didilit South Orenge Conly Wishestee Popen Areles Todd Dimy tryshyn odd Daytryste Trkis Eutler (760) 337-4575/#[email protected] (7601 344-5000 amirale strbrawley ca gov 549) 425-3545/tdmytysolmand.com 49) 475 /[email protected] (919-459 6551/[email protected] (949) 246-4333/[email protected]
P320 20 hacacon
City of Calexico
Chlorine Conversion ProJect - Gaseous Chlorine Feed System to Liguld Hypochlorte Feed System Exhibit 5-2. Relevant Project Matrix
PROJECT DESCRIPTION / LOCATION CLIENT
Sodium Hypochlorite Tank Replacement Project, Edward C. Little Water Reclamation Facility West Basin Municipal Water District Caustic Tank & Transfer Piping System Design, Rio Vista Water Treatment Plant Castaic Lake Water Agency Sodium Hypochlorite & Sodium Bisulfite Storage & Feed System Valley Sanitary District Sodium Hypochlorite and Sodium Bisulfite System Design & Installation, Carbon Canyon Water Inland Empire Utilities Agency recycling Facility
Sodium Hypochlorite System, J.B. Latham Water Reclamation Plant South Orange County Wastewater Authority Sodium Hypochlorite, Sodium Bisulfite & Ferric Chloride Facilities, Pomona Water Reclamation County Sanitation Districts of Los Angeles Plant
Chlorination & Dechlorination Chemical Facilities, Water Reclamation Plant No. 4 Coachella Valley Water District Water System Chloramine Disinfection Facilities, Waterworks District 40 Dept.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, Earl Schmidt Filtration Plant Castalc Lake Water Agency Williams Reservoir Hypochlorite Station Crescenta Valley Water District Chemical Handling Facility Improvements, Jensen Water Treatment Plant Metropolitan Water District of So. Cal. • 1 Chemical Handling Facility Improvements, Weymouth Water Treatment Plant Metropolitan Water District of So. Cal.
Exxon-Mobil & British Petroleum CMF Clean-in-Place Systems West Basin Municipal Water District 450-1 Reservoir Disinfection Facility Otay Water District Chemical Enhanced Primary Treatment, Encina Water Pollution Control Facility Encina Wastewater Authority Fluoridation Facilities Electrical As-Built Drawings, Jensen, Weymouth & Diemer Water Treatment Metropolitan Water District of So. Cal.
Plants
Filtered Effluent Chlorination Project, Jensen Water Treatment Plant Metropolitan Water District of So. Cal.
Chlorine Facility Improvements, Skinner Water Treatment Plant Metropolitan Water District of So. Cal.
Sulfuric Acid Storage & Feeding Facility, Miramar Water Treatment Plant Three Valleys Municipal Water District Chlorine Dioxide System Evaluation & Control System Assessment, Skinner Water Treatment Plant Metropolitan Water District of So. Cal.
Evaluation of Ferric Chloride Injection Points City of Corona Chemical Tank Farm & Chemical Distribution System for Oxidation Retrofit Program (ORP), Skinner Metropolitan Water District of So. Cal.
Water Treatment Plant
Chemical System Improvements, Mills, Skinner. & Weymouth Water Treatment Plants Metropolitan Water District of So. Cal.
Title 22 Chlarination & Chlorine Storage and Handling Facilities, Water Reclamation Plant No. 10 Coachella Valley Water District (WRP 10)
San Joaquin Reservoir Sodium Hypochlorite Facility Irvine Ranch Water District Acton & Antelope Valley Disinfection Conversion Project Dept.of Public Works, County of Los Angeles Groundwater Replenishment System (GWR) Orange County Waler District Fluoridation Tank Farm Facility, Mills Water Treatment Plant Metropolitan Water District of So. Cal.
Chemical Facilities for Oxidation Retrofit Program (ORP), Diemer Water Treatment Plant Metropolitan Water District of So. Cal.
Chlorine Containment Handling Facilities, Mills, Jensen and Skinner Water Treatment Plants Metropolitan Water District of So. Cal.
Tertiary Water Recycling Facility Expansion, Water Reclamation Plant No. 7 (WRP 7) Coachella Valley Water District Treatment Plant & Electrical System Improvements, J.B. Latham Wastewater Treatment Plant South Orange County Wastewater Authority Flow Equalization and Effluent Monitoring Project, Regional Water Recycling Plant No. 5 (RP-5) Inland Empire Utilities Agency Wastewater Treatment Plant Improvements Chemical Facilities, Brawley Wastewater Treatment City of Brawley Plant
Wastewater Treatment Plant Improvements Chemical Facilities, Holtville Wastewater Treatment City of Hottville Plant
Bromate Control System Project, Mills Water Treatment Plant Metropolitan Water District of So. Cal.
Team Resumes Appendix A ..
APPENDIX A
Team Resumes
WATER INFRASTRUCTERE ENGINEERS
City of Calexico
Chlorine Conversion Project - Gaseous Chlarine Feed System to Liguld Hypochlorile Foed Syslem
JAY JUNG, PE
PROJECT MANAGER
Jay Jung has 20 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 feasibillty studies, analysis of existing process trains, and LICENSE CERTIFICATION preparation of project or prellminary 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, hydraulle profiles, and detalled facility design drawings and specifications.
His area of expertise includes chemical conditioning and chemical handling facilttes, 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) Water Treatment Plant Chlorine Conversion Project, City of El Centro, CA. Project Manager for conversion of gaseous chlorine disinfection system to 12,5% bulk liquid sodium hypochlorite MS. Environmental Engineering. disinfection system. The project Included modifications of an existing chlorine ton-cylinder University Of Southern California
storage bullding Into a 12.5% sodium hypochlorite storage bullding. The project also included the replacement of existing chlorinators to peristaltic chemical feed pump skids and associated MS. Environmental Engineering. electrical systems and controls, now chemical injection piping to two Injection points (l.e. two Yonsel University, Korea
clarifiers inlet pipes and a clearwell), existing building structure modifications and modifications to electrical, control and SCADA system. Jay Jung assisted the City in coordinating with the Division of Drinking Water (DW) 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% buik liquid sodium hypochlorite and 19% ammonia for chloramine disinfection at three water reservoir sites in the MNWD service area; (1) 10 MG East Allso 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. The water Is disinfected utllizing chloramines In the reservors to maintain the residual chlorine concentration prior to delivery to the communities. Each disinfection facility contains new bulk sodlum hypochlorte 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, reservolr mixers, analyzers and dosage control, chemical leak detection systems, sample and drain plping, electrical, process monitoring and control via SCADA, shower/eyewash stations, and site utilities. Site modifications for the East Aliso Creek chemical bullding Include grading of the slope and a retaining wall. Mathis-Nellie Gall requires temporary power during construction to maintain operation of the existing disinfection ams Replacement, Moulton NI 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) 4 MG Crown Valley Reservoir, (2) 2 MG Highlands Reservoir, (3) 2.5 MG Marguerite Reservor, (4) 4 MG Moulton Peak Reservoir, and (5) 5 MG Pacific Park Reservoir. Each site contains a potable water storage reservoir that supples domestic water to the communities.
The water Is disinfected utilizing chloramines in the reservors to. maintain the residual chlorine concentration prior to delivery to the communities. Each disinfection facility contalns new bulk sodium hypochlorite and ammonla storage and feeding systems and Includes a masonry block chemical storage bullding 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 Reme Page 1 lee-ro.com
City of Calexico
Chlone Conversion Projec/- Gaseous Chlorine Feed System to Liquid Hypochlorite Feed System IAY JUNG PE monitoring and control via SCADA, shower/eyewash stations, and site utilities. Site modifications Project Manager for the Highlands and Marguerite chemical bullding Include grading of the slope, protection of existing tree, modification of chain link fence, and a retaining wall.
Talega Zone 1 and Estado Reservoir Management Systems, Santa Margarita Water District Project Manager for engineering, design, and construction support services for the installation of new potable water reservoir disinfection management systems at SMWD's 6.0 MG capacity Talega Zone 1 Reservoir In San Clemente and their 1.3 MG capacity Estado Reservolr in Coto de Caza. The District performed extensive pilot testing of disinfection system equipment at various reservoir sites and decided to change their disinfection system at the two reservoirs from onsite generation (OSG) systems to 12.5% bulk sodium hypochlorite and 38% bulk ammonium sulfate. Engineering services included designs for construction of new bulk sodium hypochlorite and ammonium sulfate systems, including all equipment, double-walled chemical storage lanks, pumps, analyzers and controllers, connected piping, valves, electrical and instrumentation. The Estado Reservoir site was not equipped with an RMS bullding and a new bullding was constructed.
Pass a Water District. Project Manager
for the conversion of on-site hypochlorite generation systems and liquid ammonia systems to bulk liquid sodlum hypochlorite and ammonia chloramine disinfection systems at two (2) different water reservoir sites in the SMWD service area; (1) 6 MG Talega Zone 1 Reservolt, and (2) 1.3 MG Estado Reservoir. Design for construction of new bulk sodium hypochlorite and ammonlum 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 bullding 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.
Chemkal Storage
Program (ORP) Projecis. forla. Project Manager
for design of process, mechanical, electrical, and control systems for a $8.5 million chemical tank farm and feeding systems supporting the $130 million ORP facities at the Diemer Water Treatment Plant. The water treatment chemicals Included caustic soda, sulfuric acid, hydrogen peroxide, sodium hypochlorite, and chlorine. Also provided engineering services during construction - shop drawing submittal revlew, responding to RFIs, evaluation of construction cost estimates, evaluation of contractor change order requests, and overall project coordination with respect to construction at the chemical facilities.
Unity Site Chlor tion System s Angeles County Department of Public Works, Waterworks District. Project Engineer for the design of chloramine disinfection system to supply and disinfect 10,700 gpm of potable water for utility site in West Palmdale. Project Includes chemical feed system design for ammonla metering pump, chlorinator, ejector, and chlorine/ammonia storage equipment.
Oxidation Retrofit Projects (DRPS), Sinner Filtration Plant, Metropolitan Water District of Southern California. Project Engineer for design of chemical storage and feeding systems (sulfuric acld, hydrogen peroxide, and caustic) supporting a $130 million ORP project and design of the site electrical power distribution system supporting the ORP, Washwater Reclamation Plant No. 2 and No. 3, and the chlorine containment and handling project.
Back Basin Ground Water Treatment Plant, Elsinore Valley Municipal Water District, Lake Elsinore, California. Project Engineer for a groundwater treatment project. Prepared a start-up and testing procedures plan and training of plant personnel during the commissioning of the 5 mgd groundwater treatment plant. The treatment process involved pressure filtration including alr scour and backwashing with water; ferric chloride, caustic soda, and ammonla storage and feeding systems; disinfection with on-site generated sodium hypochlorite; high service pumping; * recovery and recycle of backwash wastewater after setting out soilds: and monitoring of turbidity, pH; total chlorine residual, free chorine residual, and ammonia in the process water.
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City of Calexico
Chlorine Conversion Project - Gaseous Chlorine Feed Systent to Liquld Hypochlorite Feed System
SAM LEE, PE
PROCESS / MECHANICAL ENGINEER
Sam Lee has 18 years of diversifled civi, 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-bullt conditions through feld verification of existing dimensions, piping and equipment layouts, engineering analysis and LICENSE/CERTIFICATION design, and construclion phase engineering services for wastewater and water treatment plants, 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. Throtgh a wide varlety of water infrastructure engineering projects, Sam has acquired diverse design and EDUCATION Inter-discipline coordination skills.
MS, Environmental Engineering,
EXPERIENCE
University Of Southern California
Plant Chlorine Conversion Project, City of El Centro, CA. Project engineer BS, Environmental Engineering, for converslon of gaseous chlorine disinfection system to 12.5% bulk liquid sodium hypochlorite Yonsei University, Korea disinfection system. The project included modifications of an existing chlorine ton-cylinder storage bullding 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 clariflers 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 hypochiorite generation systems and liquid ammonia systems to bulk liquid sodium hypochtorite 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 Reservor. Design for construction of new bulk sodium hypochlorite and ammonlum 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 bullding at the Estado Reservoir facility and construction of a sodlum 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 reservolr management systems. The existing Tank Shark mixer at the Estado Reservolr 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 hypochiorite 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 Reservolr, (4) 4 MG Moulton Peak Reservoli, and (5) 5 MG Pacific Park Reservoir. Each disinfection facility contains new bulk sodium hypochlorite and ammonla 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 statlons, and site utiltles. 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
VIATER INFRASTRUCTHEE ENCINEERS
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City of Cafex/co
Chlorine Conversion Projett - Gaseous Chlorine Feed System to Liquld Hypochloite Feed System Sam Lee, FE 2016-17 Reservole 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 sodlum hypochlorite and 19% ammonia for chloramine disinfection at three water reservor sites in the MNWD service area: (1) 10 MG East Allso Creek Reservoir, (2) Seville Reservoirs - 2ea. x 1.125 MG, and (3) Mathis-Nelile Gall Reservolrs - 1 ea. x 1.75 MG and lea. x 4 MG. Each disinfection facility contains new bulk sodium hypochlorite and ammonla 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 vie SCADA, shower/ eyewash stations, and site utilities. Site modifications for the East Aliso Creek chemical building Include grading of the slope and a retaining wail.
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. (SCPS) Reliability Analysis and Addition of Standby Generator, Sanla Clarita Valley Waler Agency. Project Engineer for a fatal flaw/rellability analysis and subsequent design of an emergency power generation system. SCPS, bullt in 2006, has six 900 HP vertical turbine pumps. An in depth rellability engineering analysis recommended a 1,750 kW standby generator cooled by the product water. The $3 million project Included architectural, landscaping, structural, mechanical/electrical/ plumbing (MEP), security and communications, and civll/paying/ grading design elements.
Radial Gate Refurbish CRA Replacement Pro Metropolitan Water District of Soutler Califomla. 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 rellabillty of the CRA. These gales 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 fleld 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 Improvements Project, Metropolitan Water District of Souther Calliornia. Staff Engineer to Improve the CRA open canal. Improvements will Incide 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 mlles) • Curbing upstream of Coxcomb Siphon area from MM 88.01 to MM 92,64 (4.63 mlles) • 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 montoring wells and related facilitles. Level monitoring at additional locatlons is necessary to prevent pressurization of cut and covered condults. 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 faclities to allow CRA to function at full flow conditions. LEE + RO performed extensive field Investigations to gather existing facllity, conditions accurately. lge.ro.com