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Summary <br /> • The only groundwater remediation system that will meet the requirements to remove MTBE as while <br /> as Benzene is an Activated Carbon Filter system. Activated Carbon filtration was proven successful to <br /> non detect levels for all organic compounds during the ATC pump test. <br /> ..,. � .� r � t� <br /> A iotttal recharge replacement of tine groimdwaier tit the coli wart mated aq-tliaer is abou1,50,0010 gallons. <br /> At a 12 gpm pumping and filter Tate,29 days would be required to remove the contaminated groundwater <br /> at 100%efficiency. The last monitoring event indicated that only MW#3 is contaminated with MTBE <br /> and only GMX-1 is contaminated with Benzene. Mw#4 was not contaminated. If qualitites and <br /> assumptions hold as estimated,the project should be completed in 30 to 45 days. <br /> Please approve this work plan at your earliest convenience, so inai the work make be completed in a <br /> timely manner.If you have any questions on the work plan please call Ervin Rifenburg at 2091368-9381. <br /> Respectfully submitted, <br /> Foothill gi �4° JklHN8V <br /> - n <br /> Ervin Rifen nurg;s PE <br /> { <br /> 5 <br />