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01123404 FRT 13:38 FAX 916 6792900 URS <br /> 11003 <br /> -- — <br /> �t �„r i,..eorporad on <br /> 3939 Cambridge Road,Suite 220 <br /> Cameron Park, CA 95682-9007 <br /> Tel. 530.676.6884 <br /> ;rfkarouv <br /> Fax.530.676.6885he A Member of The fT Croup <br /> sv <br /> 'January 27,2000 <br /> Project 797613 <br /> Mr. Paul Supple <br /> ARCO Products Company <br /> P.O.Box 6549 <br /> Moraga, California 94570 <br /> Re: Verification Soil Sampling Report Associated with the Upgrade of Product <br /> Delivery Lines and Dispensers, ARCO Service Station No. 6080, Located at 85 <br /> Louise Avenue,Lathrop, California <br /> Dear Mr.Supple: <br /> IT Corporation is submitting this report documenting verification soil sampling activities <br /> associated with the removal and replacement of product delivery lines and dispensers at <br /> ARCO Products Company (ARCO) Service Station No. 6080, located at 85 Louise <br /> Avenue, Lathrop, California. <br /> SOIL SAMPLING AND ANALYSIS <br /> On September 8, 1999, an IT geologist collected ten verification soil samples from <br /> beneath the former product delivery lines (samples P1-1 through PL-6) and former <br /> dispensers (samples D-1 through D-4) at the locations shown on Figure 1. Product <br /> delivery line samples were collected at depths ranging from 4.0 to 4.5 feet below ground <br /> surface (bgs). Dispenser samples were collected at depths ranging from 2.5 to 3.0 feet <br /> bgs. Sample locations and sampling methodology were directed by Matt Parker, of the <br /> San Joaquin County Environmental Health Division (SJCEHD). Soil samples were <br /> collected using 3-inch diameter hand-auger sampling equipment. Sample tubes were <br /> driven into soil contained in the 3-inch diameter auger, sealed with Teflon® tape and <br /> plastic end caps,labeled, and placed on ice pending transport to the analytical laboratory. <br /> Soil samples were transported, with chain-of-custody documentation, to Sequoia <br /> Analytical (Sequoia), a state certified analytical laboratory, and analyzed for total <br /> petroleum hydrocarbons as gasoline (TPHG) using CAILUFr methodology; benzene, <br /> toluene, ethylbenzene, and total xylenes (BTE3) using USEPA Method 8020, methyl <br /> tert-butyl ether (MTBE) using USEPA Method 8264; and total lead using USEPA <br /> Method 6010A. <br /> IT Corporation <br /> CP1C:1Archivel4roo1fi0B0\Repores160$OP901.DOC-951sg:1 01/27/00 <br />