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Y <br /> Sampling of Craund-Water Monitoring Wells <br /> Beacon Station No. 502, Lodi, California December 20, 199u <br /> AGS 86091-8 <br /> The ground-water samples were analyzed for total <br /> (TPHg)using F.nvi:onmental Protection Agency <br /> Petroleum hydrocarbons as gasoline <br /> eth lbenzene, (EPA)Method 8015 and benzene,toluene, <br /> Y and total xylene isomers (BTEX) using EPs, Method 602 at the Applied <br /> Analytical Environmental Laboratories in Fremont, <br /> Laboratory No. 1212 . The results of these and prevous analyseCalifornia (Hazardous Waste Testing <br /> is are summarized in Table <br /> 3• The geologist was unable to collect a Sample from well <br /> Hydrocarbons were not detected in wells MW-2 through MWS because the well was dry. <br /> On the basis of laboratory results of ground-wafer samples collected during <br /> of monitoring we recommend discontinuing quarterly monitoring of th16 round <br /> and that the investigation of ground-water quality be clos the past year <br /> 8 -wafer quality <br /> signed copies of this letter report to Ms. Laura Cotulla of the Sanerecommend for Local <br /> Health District,Environmental Health Division,P.O.Box 2009,Stiickton C <br /> and Mr. Gordon Boggs of the California F.egional Water California'95201, <br /> Quality:Control Board, Central <br /> Valley Region,3443 Routier Road, Sacramento, California 95827-5,09$. Please call if you <br /> have questions regarding this report. <br /> Sincerely, <br /> Applied GeoSystems <br /> egg m ari <br /> it Geo ogst <br /> ohn B. Bobbitt <br /> R.G. 4313 <br /> Attachments: Plate P-1:Site Vicinity Map <br /> Plate P-2: Generalized Site Plan <br /> Plate P-3: Potentiometric t4ap <br /> Table 1: Ground-Water Elevations on September 25, 1990 <br /> Table 2: Cumulative Results of Laboratory Analyses <br /> Field Procedures <br /> Chain of Custody Record U page) <br /> Laboratory Analysis Reports_(I_page) <br />. 2 <br /> APP11ed 000Syste s <br />