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1 <br /> I w <br /> aquascence <br /> no <br /> • mr� ' MMF ! • engineers ERIC <br /> August 14, 2002 RECENED <br /> Mr Thomas Wilson AUG 1 9 2002 <br /> 821 West Yosemite Avenue <br /> Manteca, CA 95337 ENVIRONMENT HEALTH <br /> PERMIT/SERVICES <br /> SUBJECT REPORT OF QUARTERLY OPERATION & MAINTENANCE <br /> OF REMEDIATION SYSTEM, WILSON PROPERTY <br /> 17899 AIRPORT WAY, MANTECA, CA <br /> In reference to. <br /> Frank's One Stop <br /> 2072 West Yosemite Avenue <br /> Manteca, California <br /> Dear Mr Wilson, <br /> On July 15, 2002, Aqua Science Engineers, Inc (ASE) arrived at the subject <br /> • site to perform routine quarterly operation and maintenance (O&M) <br /> activities in relation to the domestic well remediation system operating at <br /> the site <br /> The domestic well remediation system consists of three 250-pound <br /> granulated activated carbon (GAC) canisters plumbed in series <br /> Groundwater is pumped from the well, into the holding tank, then <br /> through the carbon canisters prior to entry into the houses on the <br /> property <br /> On July 15, 2002 ASE collected three water samples as follows <br /> Sample Location Sample Id- <br /> Directly from the well, pre-treatment 17899-INF-07- 15-02 <br /> After treatment by the lst carbon canister 17899-GACi-07-15-02 <br /> After treatment by the 2nd carbon canister 17899-GAC2-07-15-02 <br /> The samples were placed within an ice chest containing wet ice while <br /> transported to Kiff Analytical of Davis, California (ELAP# 2236) under <br /> chairs of custody procedures The samples were analyzed for total <br /> • petroleum hydrocarbons as gasoline (TPH-G), benzene, toluene, <br /> ethylbenzene, and xylenes (collectively known as BTEX), the five fuel <br /> oxygenates, and lead scavengers by EPA Method 8260B A copy of the <br /> - 1 - <br /> 208 W 0 Pintado, Danville, Californo 94526 ® 925-820-9391 o Fox 925-8374853 <br />