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PROPOSALVOA
<br />On -Call Engineering Design Services PFAS Treatment Systems
<br />Steve Tedesco, PE, BCEE Education
<br />Project Manager BS, Civil Engineering,
<br />Polytechnic Institute of New
<br />Steve is experienced in the planning, analysis, design, and York, 1979
<br />construction of water supply, water treatment, and water distribution. Registrations
<br />His experience includes water master planning, water treatment plant Professional Civil Engineer,
<br />design, construction management and Design -Build delivery methods. California, No. 39261, 1985
<br />Steve has extensive design experience in the water and wastewater Board Certified Environmental
<br />treatment, including Desalination, Membrane Filtration, Reverse Engineer [BCEE], California,
<br />Osmosis, Ultraviolet Treatment, Nanofiltration, Granular Activated No. 11-20037, 2011
<br />Carbon (GAC), Ion Exchange (IX), and waste disposal projects. Years of Experience
<br />EXPERIENCE 39
<br />PFAS On -Call Contract, Orange County Water District, CA. 2021.
<br />Principal -in -Charge for IX/GAC treatment for PFOS and PFOA design for 18 affected wells in the main
<br />Orange County Basin. Projects included design, estimating of capital and operating costs, coordinating
<br />with vessel suppliers, and construction management for the following projects:
<br />■ Serrano Water District Well 95 and #9 (In Operation): This project consists of a 3,000 GPM
<br />IX System with a bag filter pre-treatment, 3,000 GPM Booster Pump Station and new chemical feed
<br />system for disinfection.
<br />■ Kimberley Well 1A (In Operation): Located on a very small site with a single well this facility is
<br />designed to produce 3,000 GPM using an IX System with a bag filter pre-treatment and new
<br />chemical feed system for disinfection.
<br />■ Fullerton Main Plant (Completed Design): The Fullerton Main Plant will treat six onsite wells with a
<br />total capacity of 10,100 GPM. PFOS, PFOA and VOCs will be removed using 5 to 12 ft diameter,
<br />40,000 lb. GAC vessels that will discharge into an existing forebay then pumped into the distribution
<br />system. The remaining wells will be treated with an IX system consisting of 8 vessels and bag filters
<br />for pre-treatment.
<br />E Yorba Linda Water District Headquarters Plant (In Operation): This system will treat water from
<br />10 wells with a total capacity of 17,400 GPM. An IX System consisting of 11 pairs of Lead/Lag
<br />Vessels (22 vessels total), bag filter pre-treatment, Booster Pump Station, and new Onsite
<br />Generation System for chlorine disinfection. In order to get the system on the existing site an
<br />extensive analysis of the site improvements was completed.
<br />PFAS Study for Wells ET-1, ET-2 and 78, Irvine Ranch Water District, Irvine, CA. 2021.
<br />Principal -in -Charge for a study to determine the options to add PFAS treatment to an operating VOC air
<br />stripper project. Well ET-1 operates at 2.0 MGD through one tray air stripper that discharges into a
<br />small wet well with a single booster pump station. The existing plant is located on a small lot with
<br />limited space. Project included analysis of water quality, options for IX or GAC treatment and analysis
<br />of adding wells ET-2 and 78 to the project if they become affected by PFAS. Capital and O&M costs
<br />were also prepared.
<br />PFAS Study for Five Wells, City of Downey, CA. 2021, Project Director for a study to determine the
<br />options to add PFAS treatment to five existing wells in Downey affected by PFOS and PFOA. Study
<br />included analysis of water quality, siting study, comparison of IX and GAC treatment, evaluation of
<br />piping wells to a central location for treatment, capital cost estimates, O&M estimates and lifecycle cost
<br />analysis. The report was used as an attachment to the City of Downey's funding application to Water
<br />Replenishment District of Southern California.
<br />Well No. 29 and PFOS/PFOA Treatment Systems, City of Orange, CA. 2020 - Ongoing. QAIQC,
<br />Tetra Tech is providing design and construction support services for the City's new Well No. 29 and
<br />PFOS/PFOA treatment system. The proposed Well No. 29 will pump water to 370 Zone and is
<br />expected to produce approximately 3,000 GPM. The PFOSIPFOA treatment system shall be designed
<br />to treat approximately 3,500-4,500 GPM, which includes the total production of proposed Well No. 29
<br />and existing Well No. 9.
<br />TETRA TECH
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