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. IfI SACRAMENTO feet from the west side. of the building to a depth of approximately 21 feet bgs.' Water was encountered at 19 feet bgs and rose to astatic level of approximately,I.Zfeet:bgs. SP-4 was cored 15 feet from the south side of the building to a depth of 18 feet bgs. f Water was encountered at 16 feet bgs, and rose to a 12 foot-static level. 3.2 Soil Sampling Procedures All down-hole equipment'including drilling .rods, bits, and other-sampling equipment was thoroughly cleaned before coring each hole. Clean, 8isposable gloves,�were warn by . all field personnel when handling decontaminated equipment. The soil samples were collected with a California modified split-spoon sampler lined ! with four brass tubes. The brass tube, which was determined to contain the sample most directly above contact of first water, was used for laboratory analysis as described in Section 3.3. The other brass tubes were used for lithographic descri tions as detailed in p P Section 3.1. 3.3 Laboratory Analysis and Analytical Results o Soil Samples t Four soil samples were analyzed by Superior Precision Analytical,',inc. (Superior), " �) California State Certification No. 1542, for Total Petroleum Hydrocarbons:as Gasoline (TPH-G) by EPA Method 8015-modified, Total Petroleum Hydrocarbons as Diesel C A . (TPH-D) by EPA Method 8015-modified, Benzene, Toluene, Ethylbenzene, and Xylene IQI (BTEX) by EPA Method 8020, and halogenated volatile organic compounds by EPA Method 8010. The soil samples were prepared';according to the following procedure: • The ends of the brass tubes were covered with Teflon'., film and plastic { end caps; • The sample was labelled with a sample identification number, the'date and time of collection, and the sampler's initials; • The sample was then listed on.the Versar chain-of-custodyform;.and. _ 6