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irquq_ science <br /> MW <br /> Aff ® � 1 � d <br /> r <br />• <br /> 01,1ff1ffCCrS RRE3 <br /> January 29, 2003 <br /> Ms Minny Thurman <br /> 8238 Thornton Road <br /> Stockton, CA 95209 <br /> SUBJECT REPORT OF SEMI-ANNUAL OPERATION & MAINTENANCE <br /> OF REMEDIATION SYSTEM, THURMAN PROPERTY <br /> 17904 AIRPORT WAY, MANTECA, CA <br /> In reference to. <br /> Frank's One Stop <br /> 2072 West Yosemite Avenue <br /> Manteca, California <br /> Dear Ms Thurman, <br /> On December 13, 2002, Aqua Science Engineers, Inc (ASE) arrived at t h e <br /> . subject site to perform routine semi-annual operation and maintenance <br /> (O&M) activities in relation to the domestic well remediation system <br /> operating at the site <br /> The domestic well remediation system consists of two 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 house on the <br /> property <br /> On December 13, 2002 ASE collected three water samples as follows <br /> Sarnnle Location Sample Id <br /> Directly from the well, pre-treatment 17904-INF-12-13-02 <br /> After treatment by the 1st carbon canister 17904-GAC 1-12-13-02 <br /> After treatment by the 2nd carbon canister 17904-GAC2-12-13-02 <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 /> chain 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 El Pintodo Donville, Colifoinia 94526 e 925-820-9391 o Fox 925 8374853 <br />