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PROPMALFOR
<br />On-Caff Engineering Design Services
<br />Eric Yuen, PE, SE
<br />Structural
<br />Eric has more than 15 years of experience in the design, analysis and
<br />detailing in structural engineering. Mr. Yuen is knowledgeable in
<br />reinforced concrete, masonry, structural steel and wood frame design,
<br />and construction for a variety of building and infrastructure projects
<br />including reservoirs, waterlwastewater treatment facilities, as well as
<br />seismic retrofit of existing structures.
<br />EXPERIENCE
<br />PFAS Treatment Systems
<br />Education
<br />BS, Civil Engineering,
<br />California State Polytechnic
<br />University, Pomona, 2007
<br />MS, Structural Engineering,
<br />California State Polytechnic
<br />University, Pomona, 201E
<br />Registrations
<br />Professional Civil Engineer,
<br />California, No. 75983, 2009
<br />PFAS On -Call Contract, Orange County Water District, CA. 2021. Professional Structural
<br />Structural Engineer for 1XIGAC treatment for PFOS and PFOA design Engineer, California,
<br />No, 6177, 2014
<br />for 18 affected wells in the main Orange County Basin. Projects
<br />included design, estimating of capital and operating costs, Years of Experience
<br />coordinating with vessel suppliers, and construction management for 15
<br />the following projects:
<br />■ Serrano Water District Well #5 and #9 (In Operation): This project
<br />consists of a 3,000 GPM IX System with a bag filter pre-treatment, 3,000 GPM Booster Pump
<br />Station and new chemical feed 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 on site 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 Ib, GAC vessels that will discharge into an existing fore bay 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 />Pure Water Oceanside, Advanced Water Purification Facility, City of Oceanside, CA.
<br />2018 - Ongoing. Structural Engineer. To counteract the growing reliance on imported water supply
<br />while increasing local water supplies, and to meet the City's long-term goal of 50% water independence
<br />by 2030, the City has selected a team led by Tetra Tech to design a new Advanced Water Purification
<br />Facility (AWPF), The newly proposed AWPF will provide highly -treated water supply with the specific
<br />purpose to recharge the MGB in the upper San Luis Rey recycled water service area through indirect
<br />potable reuse as a component of the overall Pure Water Oceanside project. The AWPF will be built on
<br />an existing former recycled water storage pond at the San Luis Rey Water Reclamation Facility. The
<br />AWPF process will be designed as a multi -barrier treatment process including microfiltration, reverse
<br />osmosis, and ultraviolet advanced oxidation process. In addition to these three main unit treatment
<br />processes, the AWPF will include chemical storage and feed equipment for conditioning, stabilizing and
<br />membrane cleaning.
<br />Albert Robles Center for Water Recycling and Environmental Learning (Formerly known as
<br />GRIP), Water Replenishment District of Southern California, Pico Rivera, CA. 2019. Structural
<br />Engineer for a new 13,000 acre-feet per year of fully advanced treated recycled water. The structures
<br />include a two-story administration building with a rooftop garden, a 45,000 square foot process building,
<br />a 3 MG buried concrete equalization tank, and a dozen ancillary structures. The administration building
<br />has rigid floor and roof diaphragms with concentric steel braced frames as the lateral force resisting
<br />elements. The process building has a steel framed roof and concrete masonry shear wails. An
<br />extensive network of cable trays and piping are supported from the roof for gravity and seismic loads.
<br />TETRA TECH
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