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PROPWL FOR
<br />On -Call Engineering Design Services PFAS Treatment Systems
<br />Corey Hess, PE Education
<br />Civil Lead BS, Civil Engineering,
<br />Specialization: Water
<br />Core has more than 19 ears of professional experience in the Resources, University of
<br />Y Y p p
<br />design of water, wastewater, and recycled water facilities. He has led California, Irvine, 2002
<br />design and performed project management tasks for the design of Registrations
<br />pump stations, pipelines, various water and wastewater treatment Professional Civil Engineer,
<br />plant process areas, as well as site civil and drainage design. The California, No. 68499, 2005
<br />early years of his career consisted of master planning, hydraulic Years of Experience
<br />analysis, and written reports. 19
<br />EXPERIENCE
<br />PEAS On -Call Contract, Orange County Water District, CA. 2021. 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 IX
<br />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 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 />■ 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 />Carlsbad Desalination Intake Pump Station, Design of a 300 MGD Dilution Pump Station,
<br />Phase 1, Kiewit Infrastructure West, Carlsbad, CA. 2019 - Ongoing. Project Engineer. This
<br />design -build project provides for the design and construction of brine dilution pumps at the existing
<br />Carlsbad Desalination Plant (CDP) with minimal production shutdown. The project consists of hydraulic
<br />pump modeling and design of dilution pumps, discharge piping, brine piping, and flowmeter facilities,
<br />NRG forebay modifications including new screen backwash pumps and tunnel bulkheads, a new
<br />electrical building, and the associated civil and grading work. The project has extensive structural
<br />rehabilitation work and a new floating dock in the lagoon. The project provides instrumentation and
<br />controls for the operation of the new facility and will tie in new signals to the existing CDP control
<br />system. The project has many environmental factors and requires working closely with local permitting
<br />agencies, the City, the CDP operators, and the Encina Power Station.
<br />Pure Water Oceanside, Conveyance and Injection Facilities, City of Oceanside, CA. 2019 -
<br />Ongoing. Project Engineer. As part of the Pure Water Oceanside project Tetra Tech designed the
<br />pipelines that will be constructed as part of the Advanced Water Purification Facility (AWPF) that
<br />convey the advanced treated water to the existing Lower Recycled Water Pump Station and to the
<br />Upper Recycled Water Purnp Station that will be built along with the AWPlr. In addition, Tetra Tech
<br />designed three new injection wells (Weil 1, Well 3 and Well 6) and conveyance pipelines to the wells,
<br />totaling a maximum capacity of 6.0 MGD.
<br />TETRA TECH
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