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PROPOSAL FOR <br />On -Call Engineering Design Services <br />City of Downey I PFAS Study for Five Wells <br />Owner: City of Downey <br />Number of Wells: 5 <br />Capacity: 1,100 GPM to 1600 GPM <br />Status: Study Completed July 2021 <br />Construction Costs: $3.0 million to $5.5 million <br />PFAS Treatment: Ion Exchange & Granular Activated Carbon <br />Reference: Dan Mueller, PE, City of Downey <br />(562)904-7110 <br />Project Benefits: <br />• Analyzed Water Quality <br />• Reviewed Well pumps & motors <br />• Analyzed centralized treatment option <br />• Provided site layouts <br />• Developed Capital & Operations costs <br />City of South Gate I PFAS Compliance Study <br />Owner: City of South Gate <br />Number of Wells: 4 <br />Capacity: 5,000 GPM <br />Status: Study Completed September 2022 <br />Construction Costs: $4.8 million <br />PFAS Treatment: Ion Exchange & Granular Activated Carbon <br />Reference: Chris Castillo, City of South Gate <br />(323) 563-5779 <br />Project Benefits: <br />• Analyzed Water Quality <br />• Reviewed Well pumps & motors <br />• Analyzed centralized treatment option <br />• Provided site layouts <br />• Developed Capital & Operations costs <br />• Provided Costs for 1,4-Dioxane treatment if needed in future <br />PFAS Treatment Systems <br />TETRA TECH Page 116 <br />