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r <br /> � �science <br /> r r <br /> I LERYINCers Emir <br /> May 9, 2002 <br /> Mr Juan Robles <br /> 17886 Airport Way <br /> Manteca, CA 95337 <br /> SUBJECT REPORT OF QUARTERLY OPERATION & MAINTENANCE <br /> OF REMEDIATION SYSTEM, ROBLES PROPERTY <br /> 17886 AIRPORT WAY, MANTECA, CA <br /> In_ reference to. <br /> Frank's One Stop <br /> 2072 West Yosemite Avenue <br /> Manteca, California <br /> Dear Mr Robles, <br /> On April 23, 2002, Aqua Science Engineers, Inc (ASE) arrived at t h e <br /> • subject site to perform routine quarterly operation and maintenance <br /> (O&M) activities in relation to the domestic well remediation system <br /> operating at the site, and to sample the irrigation well <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 houses on the <br /> property <br /> On April 23, 2002 ASE collected four water samples as follows <br /> Sample Location Saunph-, Id- <br /> Directly from the well, pre-treatment 17886-INF-04-23-02 <br /> After treatment by the 1st carbon canister 17886-GAC1-04-23-02 <br /> After treatment by the 2nd carbon canister 17886-GAC2-04-23-02 <br /> Directly from the irrigation well 17886-IRR-04-23-02 <br /> The samples were placed within an ice chest containing wet ice while <br /> transported to Klff Analytical of Davis, California (FLAP# 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 /> - i - <br /> _i 9,,7,526 a 925820-9391 -, fax 92,5-83-14653 <br />