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- r <br /> K €. EINFELDLR <br /> August 9, 1988 <br /> File: 24-2100-00 <br /> Mr. Keith Tallia <br /> Oil Equipment Services <br /> P.O. Box 950 <br /> San Andreas, CA 95249 <br /> SUBJECT: Soil Sample Analytical Results, Di Salvo Truck Lines <br /> Dear Mr. Tallia: <br /> Enclosed are the analytical results for the soil samples collected from Di Salvo Truck Lines <br /> at 100 South Ventura Avenue, Stockton, California (Plate 1). It is Kleinfelder's <br /> understanding that one underground diesel tank was excavated and removed from the site. <br /> After consulting with Ms. Kasey Foley of the San Joaquin County Local Health District, Oil <br /> Equipment Services requested that two soil samples be collected from the bottom of the <br /> open excavation, one from each end of the tank. <br /> On July 8, 1988, a Kleinfelder geologist collected two soil samples at a depth of <br /> approximately 14 feet from the native soil within the excavation (Plate 2). Soil sample SS- <br /> 18496 and soil sample SS-18497 were collected from a gray, very moist, sandy silt. <br /> Qualitative field screening using a field photoionization detector resulted in readings of 360 <br /> and 131 parts per million by volume respectively. <br /> The samples were delivered under chain-of-custody to Chemwest Analytical Laboratories, <br /> Inc., in Sacramento, and analyzed for total petroleum hydrocarbons (TPH) by GC/FID and <br /> WH <br /> aromatic compounds (BTEX) by EPA Method 8020. Sample SS-18496 yielded a <br /> TPH concentration of 1,200 mg/kg diesel and was below reporting limits for gasoline. <br /> Sample SS-18497 yielded a TPH concentration of 310 mg/kg diesel and was below the <br /> reporting limits for gasoline. The BTEX analysis for both samples was below the <br /> laboratory's reporting limits for all constituents. The analytical results for the two analyses <br /> are presented in Table 1. Laboratory data sheets and a chain-of-custody form are included <br /> at the end of this report. <br /> Kleinfelder recommends a copy of this report be submitted to the San Joaquin County <br /> Local Health District for their review and approval. <br /> . -..-11 -11 - 13._1. n (- — o--Tn C-> OCR'7- )If;l '66-1701 <br />