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PROPOSAL FOR
<br />On -Gall Engineering Design Services PFAS Treatment Systems
<br />Crisna Raymond, PE [ Education
<br />Civil Lead
<br />BS, Civil Engineering,
<br />University of Washington,
<br />Crisna has 25 years of engineering experience in design and
<br />Seattle WA, 1996
<br />construction support in water/wastewater and transportation. Her
<br />Registrations
<br />experience in water/wastewater projects includes pressure and gravity
<br />professional Civil Engineer,
<br />pipelines, wells, pump stations, water treatment plants and reservoirs.
<br />California, No. 69403, 2006
<br />Crisna's experience in transportation projects includes new arterials,
<br />street improvement/widening projects, storm drainage, grading and
<br />Years of Experience
<br />site improvement.
<br />25
<br />EXPERIENCE
<br />PFAS Qn -Cal l Contract, Orange County Water District, CA. 2 02 1. Project Engineer for IX/GAC
<br />treatment for PFOS and PFOA design for 18 affected wells in the main Orange County Basin, Projects
<br />included design, estimating of capital and operating costs, coordinating with vessel suppliers, and
<br />construction management for the following projects:
<br />■ Serrano Water District Well #5 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 6 to 12 ft diameter,
<br />40,000 Ito. 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 />■ 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. Project
<br />Engineer for a study to determine the options to add PFAS treatment to an operating VOC air stripper
<br />project. Well ET-1 operates at 2.0 MGD through one tray air stripper that discharges into a small wet
<br />well with a single booster pump station. The existing plant is located on a small lot with limited space.
<br />Project included analysis of water quality, options for IX or GAC treatment and analysis of adding wells
<br />ET-2 and 78 to the project if they become affected by PFAS. Capital and O&M costs were also
<br />prepared.
<br />PFAS Study for Five Wells, City of Downey, CA. 2021. Project Engineer 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 Iifecycle 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 />Huntington Park Well No. 15 Wellhead Treatment Plant, Water Replenishment District of
<br />Southern California, Huntington Park, CA. 2019. Project Engineer for the preliminary design report,
<br />final design, construction management and inspections services to upgrade the Wellhead Treatment
<br />system at Huntington Park Well No. 15. Design included removal of the existing air stripping units at
<br />Well No. 15 and replaced with liquid phase GAC treatment system to remove contamination,
<br />particularly volatile organic compounds from the well.
<br />TETRA TECH
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