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PROPOSAL FOR <br />On -Call Engineering Design Services <br />Irvine Ranch Water District, ET-1 PFAS Treatment Plant <br />Owner: Irvine Ranch Water District <br />Number of Wells: 1 <br />Capacity; 1,100 GPM <br />Status: Design Completed & Under Construction <br />Construction Costs: $3.0 million <br />PFAS Treatment: Granular Activated Carbon <br />Reference: Rich Mori, PE, Irvine Ranch Water District <br />(949) 453-5571 <br />Project Benefits: <br />• GAC used due to presence of VOCs & PFAS in the groundwater <br />• Designed to be built on an existing operating well site <br />• Layout included planning for future expansion <br />• City permits were required for piping connection <br />Irvine Ranch Water District I SGU PFAS Treatment Plant <br />Owner: Irvine Ranch Water District <br />Number of Wells: 12 Shallow Wells <br />Capacity: 600 GPM <br />Status: Design Completed & Under Construction <br />Construction Costs: $2.9 million <br />PFAS Treatment: Granular Activated Carbon <br />Reference: Rich Mori, PE, Irvine Ranch Water District <br />(949) 453-5571 <br />Project Benefits: <br />• GAC used due to presence of very high VOC levels & PFAS in <br />the groundwater <br />• Designed to replace existing air stripper system <br />• Located on site of former El Toro Marine Base <br />• Permitting required from City on required pipeline <br />Yorba Linda Water District I Headquarters PFAS Treatment Plant <br />Owner: Yorba Linda Water District <br />Number of Wells: 10 <br />Capacity: 17,360 GPM (25.0 MGD) <br />Status: Operational since May 2022 <br />Construction Costs: $32.5 million <br />PFAS Treatment: Ian Exchange (IX) <br />Reference: Chris Olsen, PE, Orange County Water District <br />(714) 378-3211 <br />Project Benefits: <br />• Largest PFAS IX treatment plant in the United States <br />• Studied options to treat at 3 sites or at one combined site <br />• Project includes a 25.0 MGD pump station and emergency <br />generators <br />• Competed detailed blending analysis required for DDW permitting <br />• Winner of ASCE Orange County Branch Project of the Year 2021 <br />• Winner of ASCE Los Angeles Chapter Section Project of the Year 2022 <br />PFAS Treatment Systems <br />TETRA TECH Page 115 <br />