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12/01/89 08:44 $'7c-J7 746-`-551 RAPREALIAN ENG. 0002 <br /> 1li3 icy ?: B p»• KAPREALIAte ENC, 2001 <br /> PARADISO CONSTRUCTION CO. <br /> GENERAL & PETROLEUM CON'T'RACTORS <br /> UC>eMN NO. 2JOZ20 <br /> P.C. &OX 6397 <br /> 4720 "G" STREEIT OAKLAND. CA 94609 <br /> (41S) WWI I <br /> SOIL. AND GIOUNDWKER SAMPLING FROOCEMDUIRRF, <br /> Gasoliw Diesel w 0 -re Oil. Tank Ramoval <br /> Underground storage tanks require two sail samples per tank of 1000 <br /> gallon caracity or greater. Tanks of a smaller capacity requite one <br /> sample per tank unless otherwise required by local. agenciea. Samples <br /> are collected at a depth of two feet belga the tank hackfill. <br /> UK samples frcm beneath gasoline storage tanks are analyzet for Total <br /> Fecroleum Hydrocarbons (TPH) as gasoline (low to medium boiling <br /> fraction) uni, EPA method 8020. Samples from beneath diesel fuel <br /> storage tanks are analyzed for I?H as diesel (high boiling :Taction) <br /> using EPA methods 3550 and 8015, <br /> 1'f groundwater is ena6untered in a fuel tank pit, water sample 15 <br /> collected. The sample is collected w a glass VOA (Volatile Organic <br /> Analysis) via!, insuring that no head space remains in the vial . '1 he <br /> vial is sealed with a 'teflon-lined screw tap. Water f:om a gasoline <br /> tank pit is analyzed for TPH as geaaline and $TX using EPA methods 602 <br /> and 5+010. slater samples `roar a diesel tank pit are analyzed. 4or TPK as <br /> diesel and BTX using EPA methods 3510 oral 8020. <br /> 5011 sample, col7.ecteu irum beneath waste oil taKs are analyzed for TPH <br /> high boiling fraction. using EPA method 3550 and 5015 ; Notal oil and <br /> grease (TOG) using EPA extraction method 35503 and gravimetric' <br /> determinatioR method $060 and 8020 or EPA method 8240. Groundwater <br /> samples waijected are collected as described above and are analyzed <br /> alyze�.�for <br /> TPH, high boiling fraction using EPA methods 3510 and 6020► <br /> tile <br /> organic compounds using EPA method 6240 . <br /> The analysis for all soil and wase: samples are done by a state <br /> certified lab, <br />