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UNIVERSAL <br /> ENGINEERING <br /> INCORPORATEDi <br /> Augost 4, 1989 i <br /> I _ <br /> I <br /> Carmelita Cozad <br /> 4907 Waterloo lRoad <br /> I <br /> Stockton, CA 55205 <br /> 'I <br /> Subject; Underground Tank Removal Soil SWAP I ing <br /> 27 Julie 19£39 at 4907 Waterloo Road) Stockton, CA <br /> ' Deaf Ms. Cozad: _ <br /> } The soil on the floor of the excavation folll�win.g the removal of two <br /> ' diesel fuel storage tanks was sampled by Greg Reed, 27 June 1989. <br /> The sampling was performed in accordance with "Regional Water Board <br /> Recommendations" with respect to the following criteria: <br /> 1, minimum number of soil swiples per tank size'.. <br /> 2. Locafiloh of soil samples. <br /> 3. Notation of groundwater's absence. <br /> 4. Utilization of driven-tube type hanuner. <br /> 5. Proper sample collection/documentation/delivery to certified - <br /> laboratory. <br /> I <br /> Two samples were obtained for each tank, one. at each of the tank ends. <br /> T`Y,ere was no evident groundwater or product on the floor of the <br /> excavation- Three to six inches of soil was scrapii ed from the surface <br /> prior to sampling with a veXh►ftteyer hammer. The sample tube ends were. � <br /> cgvered with aluminum foil, capped, taped with plihstic tape, labeled <br /> and secured in a cooler on ice. <br /> The samples were delivered to GTEL Envirormiental Laboratory in Concord <br /> 11� II <br /> the �asfie afternoon under chain-of-custody (copy attached) with a <br /> request for analyses as follows: � <br /> T.P.H. diosel: extraction - 3550 - GC/FIA 8015 modified. <br /> BTEC: GC/P.I.D. - 8020 ' f <br /> A 14 hour turnaround as requested, and verbal results were <br /> in that time frame. Final hard copy results of <br /> analytical work are attached. <br /> i <br /> I <br /> . <br /> I's- <br /> P.o.Box 5e,53•Concord,California 94524&,707)748-U)99 <br /> Nn ZOO . T'-T T Z:I --j 6S — - Jfl <br />