5/7/2025
1 RiversideCA.gov1
RiversideCA.gov
Professional Consultant Services Agreement for Site Modifications at the Palmyrita Water Treatment Plant for PFAS Removal (RFP 2415)City CouncilMay 20, 2025Public Utilities Department RiversideCA.gov2
1. April 2024 – The United States Environmental Protection Agency (USEPA) established the first-ever nationwide, legally enforceable drinking water standards to protect communities from Per- and Polyfluoroalkyl Substances (PFAS) in their drinking water.2. Public water systems have until 2029 to implement solutions that reduce PFAS in drinking water below the standard.3. PFAS has impacted several Riverside groundwater sources and will require treatment to meet the new standards.4. November 9, 2020 – The Board approved a professional consultant services agreement with HDR Engineering, Inc. to assist in developing a long-term approach to treat and reduce PFAS found in Riverside’s water sources.5. The study, in conjunction with input from staff, identified that the most beneficial and cost-effective solution was the construction of a new PFAS Treatment System at Riverside’s existing Palmyrita Water Treatment Plant.BACKGROUND1 2 5/7/2025
2 RiversideCA.gov3
PROJECT LOCATION MAP
RiversideCA.gov4
DISCUSSION1. The project consists of an Ion Exchange (IX) Treatment System:a. Twenty-two (22) IX Vesselsb. Pumps, Prefilters, and Pipingc. Mechanical and Electrical Equipmentd. All related incidental work2. RFP No. 2415 was issued for the Projecta. RFP developed in collaboration with assigned Purchasing Staffb. The RFP was posted on October 4, 2024 with proposals were due on November 19, 2024c. Pre-proposal meeting was held on October 17, 2024d. Two proposals were received3 4 5/7/2025
3 RiversideCA.gov5
RFP NO. 2415 RESULTSWeighted Score EvaluationsProposed FeeCity LocationVendor Name RankTotal Proposal ScorePricing(25%)Professional References(5%)Qualifications and Experience(30%)Approach and Methodology(20%)Project Understanding(20%)1968.13250.0041.88288.75190.00197.50$3,698,000 Irvine, CaliforniaTetra Tech, Inc.2921.41225.1640.00273.75190.00192.50$4,105,880 Riverside, CaliforniaHDR Engineering, Inc.Estimated Budget Range: $3,500,000 – $4,000,000 RiversideCA.gov6
RFP NO. 2415 RESULTS (CONT.)Overall RankOverall ScoreInterview ScoreProposal ScoreCity LocationVendor Name11,948.97980.84968.13Irvine, CaliforniaTetra Tech, Inc.21,855.57934.16921.41Riverside, CaliforniaHDR Engineering, Inc.1. The assigned representative from Purchasing requested a Best andFinal Offer (BAFO) from Tetra Tech, Inc.2. Tetra Tech, Inc. reduced pricing resulting in a new overall proposedfee of $3,670,451, a $27,549 or 0.7% reduction to the original feesubmitted.5 6 5/7/2025
4 RiversideCA.gov7
STRATEGIC PLAN ALIGNMENTStrategic PrioritiesEnvironmental Stewardship– Goal No. 4.2Infrastructure, Mobility & Connectivity – Goal No. 6.2Cross-Cutting Threads Community Trust
Equity
Fiscal Responsibility
Innovation
Sustainability & Resiliency
RiversideCA.gov8
RECOMMENDATIONSThat the City Council:1. Approve a Professional Consultant Services Agreement from RFP No. 2415 forEngineering Design and Construction Management Services for Site Modifications at thePalmyrita Water Treatment Plant for PFAS Removal with Tetra Tech, Inc. of Irvine,California, for a term until December 31, 2029, in a not-to-exceed amount of $3,670,451;2. With at least five affirmative votes, authorize the Chief Financial Officer, or designee, torecord a supplemental appropriation in the total amount of $3,670,451 from the WaterFund Undesignated Reserves and appropriate expenditures to the PFAS Treatment PlantAccount; and3. Authorize the City Manager, or designee, to execute the Professional ConsultantServices Agreement and any other documents necessary to effectuate the projectdescribed herein, as well as the ability to make minor non-substantive changes inaccordance with all purchasing policies. 7 8