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i � -•�._ -'tea r - ' � <br /> - UNIVERSAL <br /> ENGINEERING <br /> INCORPORA"T"ED ;� F" �u <br /> august 4, 1989VIIr - , <br /> li <br /> Carmelita Cozad <br /> 4907 Waterloo Road <br /> Stockton, CA 95205 <br /> Subject: Underground Tank Removal Soil Sampling 1 <br /> 27 Juue 1989 at 4907 Waterloo Road, Stockton, CA <br /> Al. . . <br /> Dear Ms. Cozad: V <br /> The soil on the floor of the excavation followinglIthe removal of two <br /> diesel fuel storage. tanks was sampled by Greg Reed, 27 June 1989. <br /> I <br /> "Re <br /> The sampling was performed in accordance with gional Water Board <br /> Recommendations" with respect to the following criteria: <br /> I. Minimum number of soil samples per tankysize'. <br /> 2. Vocation of soil samples. <br /> 3. Notation of groundwater's absence. <br /> 4. Utilization of" driven-tube type hammer." <br /> 5. Proper sample collection/documentation/delivery to certified <br /> laboratory. j <br /> i <br /> Two samples were obtained for each tank, oneat each of the tank ends. <br /> There was no evident groundwater or product on the floor of the <br /> excavation. Three to six inches of soil was scraped from the surface <br /> prior to sampling with a veihmeyer hammer. The sample tube ends were <br /> covered with aluminum foil, capped, taped with plastic tape, labeled <br /> and secured in a cooler on ice. <br /> I i1 <br /> The samples were delivered to GTEL..Environmental Zaboratory in Concord_ <br /> the same afternoon under chain-of-custody (copy attached)' with a <br /> request for analyses as follows: I <br /> T.P.H. diesel: extraction - 3550 - GC/FID 8015 modified <br /> BTEX: GC/P.I.D. -` 8020 <br /> A 24 hour turnaround was requested, and verbal results were <br /> communicated within that time frame:. Final hard copy results of. <br /> analytical work are attached. "I <br /> 6 <br /> I I� <br /> I%• <br /> P.O.Sox 585316 Concord,California 94624 (707)746 6699 <br />