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J <br /> W" KLEINFELDER <br /> November 5, 1987 <br /> File: 24-2075-1 <br /> Mr. Keith A. Tallia <br /> Oil Equipment Service <br /> P.O. Box 950 <br /> San Andreas, CA 95249 <br /> SUBJECT: Soil Sampling; 100 Ventura Street, Stockton . <br /> Dear Mr. Tallia: <br /> Kleinfelder was retained by Oil Equipment Service to perform soil .sampling <br /> for chemical analysis. No site investigation or data analysis was <br /> included in the scope of work. Enclosed are the analytical. results for <br /> the soil sample collected from the site `at 100 Ventura Street, Stockton, <br /> California. <br /> Summary of Work <br /> On October 15, 1987, one 5,000 gallon- underground tank was excavated and <br /> removed by Oil Equipment Services and the tank backfill material was <br /> removed down to native soil. This tank reportedly contained diesel fuel. <br /> Ms. Donna Heran, Registered Sanitarian, of the San Joaquin Local Health <br /> District specified the sampling location and chemical analyses . <br /> Sample 31336 was collected by Kleinfelder from the bottom of the south end <br /> of the excavation (where the tank fill spout had been located) at a depth <br /> of approximately 15 feet below grade. The sample was collected by driving <br /> a brass tube into soil extracted from the pit by a backhoe. The brass <br /> tube was then capped with aluminum fail and plastic end caps and was <br /> stored in an iced sample container. The sample was submitted under <br /> chain-of--custody to CHEMWEST Analytical Laboratories, Inc. in Sacramento. <br /> The sample was analyzed for total petroleum hydrocarbons by GC-FID and <br /> purgeable aromatic compounds. (BTX) by EPA 8020. <br /> All constituents analyzed were below laboratory reporting limits except <br /> for TPH (as diesel') detected at 130 mg/kg. Laboratory data sheets and a <br /> chain-of-custody form are included at the end of this report- . <br /> i <br /> 4-1 <br /> A <br />{ f� 1. - ,A� <br /> f. KLEINFELDER 9795 Business Park Drive, Suite C, Sacrarrsentu, CA 95827 (916) 66-1701 �� 7- L 7 7 <br />