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Yorba Linda Water District Well No. 20 and Well No. 21 PFAS Treatment Plants. Anaheim, C Project engineer <br />for PFAS treatment plants at the two well sites located diagonally across a groundwater spreading basin. Well <br />No. 20 will have four ion -exchange (IX) vessels or six GAC vessels with a GAC backwash supply tank, and a GAC <br />backwash waste tank. Well No. 21 will have four IX vessels. Three borings were drilled to a maximum depth of <br />50 feet. Geotechnical challenges included loose soils, shallow groundwater, and liquefaction potential. <br />Prepared a geotechnical exploration report presenting findings, conclusions, and recommendations for the <br />project. <br />Well 38 PFAS Treatment Facility, City of Santa Ana, Ct Geotechnical Engineer for a PFAS treatment facility that <br />includes four 12-foot diameter, ion -exchange (IX) vessels supported on a concrete pad and a pre -filtration <br />system. Drilled and sampled two exploratory borings to a maximum depth of 50 feet. Evaluated liquefaction <br />potential at the site and developed geotechnical recommendations for design and construction of the project. <br />Main Plant PFAc, Treatment Facility, Citv of Fullerton Ck Project Engineer for a PFAS treatment facility for Wells <br />3A and 5 through 8 at the City's Main Plant. The new facility includes 16 to 20 new ion -exchange (IX) and/or <br />GAC vessels with new supply and waste tanks supported on concrete pads. The geotechnical exploration also <br />evaluated an alternative location within the plant, which is also being considered as a permanent location for <br />additional 20 new vessels. Advanced six borings to depths of 111/2 to 261/2 feet and collected soil samples for <br />laboratory testing. <br />Additional PFAS Project Experience <br />Santa Ana Well 40 PFAS, Santa Ana, CA <br />• Santa Ana Crooke Station Wells 27, 28, and 31, Santa Ana, CA <br />• IRWD Well ET-1 PFAS Water Treatment Plant, Irvine Ranch Water District, Irvine, CA <br />Downey Wells 4, 11, and 2, PFAS, Downey, CA <br />IRWD Shallow Groundwater Unit (SGU) PFAS Treatment Plant, Irvine Ranch Water District, Irvine, CA <br />City of Santa Ana I On -Call Engineering Design Services for PFAS Treatment Systems RFP NO. 22-133 A-45 <br />