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0 TABLE 1 (Continued) CUMULATIVE ANALYTICAL RESULTS-SOIL San Joaquin County Motor Pool, 1810 East Hazelton Avenue, Stockton, California OXYGENATES SAMPLE DATE SAMPLE SAMPLE ETHYL- TOTAL LOCATION SAMPLED ID DEPTH TRPH TPH-D TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE I DIPS ETBE TAMEJ TBA 1,2-DCA LEAD MW-1 03/17/99 B1-7 7 NA NA ND<1 ND-0005 ND<0005 ND<0005 ND<O D05 ND<0005 NA NA NA NA NA NA B1-13 13 NA NA ND<1 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<O 005 NA NA NA NA NA NA B1-18 18 NA NA ND<1 ND<O 005 ND<0 005 ND<O 005 ND<0 005 ND<O 005 NA NA NA NA NA NA B1-23 23 NA NA 44 ND<O 005 035 017 14 ND<O 005 NA NA NA NA NA NA B1-28 28 NA NA 1,500 045 33 22 180 1 022 1 NA NA NA NA NA NA B1-33 33 NA NA 1,800 11 40 35 210 14 NA NA NA NA NA NA B1-38 38 NA NA 3,500 45 450 230 1,200 78 AM NA NA NA NA NA B1-43 43 NA NA 3,300 43 140 43 340 21 NA NA NA NA NA NA 81-48 48 NA NA 1,800 22 68 24 180 17 NA M NA NA NA NA Bl-53 53 NA NA 120 31 65 17 13 17 NA NA NA NA NA NA S1-60 60 NA NA 71 22 52 12 11 1_9 NA NA NA NA NA NA MW-2 03118199 82-5 5 NA N0<10 ND<1 ND-0 ODS ND-0 005 ND<0 005 ND<O 005 NA<0 005 NA NA NA NA NA NA B2-10 10 NA ND<10 ND<l ND<0 005 ND<O 005 ND<O 005 0 012 ND<O 005 NA NA NA NA NA NA 82-15 15 NA ND<10 ND<l ND<O 005 00064 00078 0 083 ND<0 005 NA NA NA NA NA NA B2-20 20 NA ND00 ND<1 0007 ND<O 005 001 0 055 ND<O 005 NA NA NA NA NA NA 82-25 25 NA ND<10 37 0 034 0 044 0 034 029 0 019 NA NA NA NA NA NA B2-30 30 NA ND<10 36 0 069 026 0 085 091 0 008 NA NA NA NA NA NA B2-35 35 NA ND-10 17 087 22 032 3 0 092 NA NA NA NA NA NA 82-40 40 NA 51 110 075 4 18 15 012 NA NA AA NA NA NA 132-45 45 NA ND<10 99 071 18 014 14 0 089 NA NA NA NA NA NA 62-50 50 NA ND<10 93 13 034 021 18 0 12 NA NA NA NA NA NA B2-55 55 NA ND<10 43 12 00094 0 014 037 0 095 NA NA NA NA NA NA B2-60 60 NA ND<10 21 23 089 029 27 026 NA NA NA NA NA NA MW-3 11/29/01 MW3-40 40 NA NA ND<1 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 NA MW3-45 45 NA NA ND-0 ND-0 005 ND<O 005 ND-0 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<0 005 ND-0 005 ND<0 005 NA MW3-55 55 NA NA ND<1 ND-0 005 ND<0 005 ND<0 005 ND<0 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 NA NOTES All results are reported in milligrams per kilogram(mg/kg)which translates to parts per million(ppm) Sample depths are in feet below ground surface Total Recoverable Petroleum Hydrocarbons(TRPH)by EPA Method 418 1 Total Petroleum Hydrocarbons as Diesel(TPH-D)by EPA Method 8015M Total Petroleum Hydrocarbons as Gasoline(TPH-G) benzene toluene ethylbenzene xylenes(BTEX)by Modified EPA Method 8020/8015M(Pnor to November 2001) Methyl tertiary butyl ether(MTBE)by EPA Method 8020(Pnor to November 2001 except UST#1 Replacement samples collected 1114198,which was by EPA Method 8260) TPH-G STEX and MTBE by EPA Method 8260B(Beginning November 2001) Other oxygenates Di-isopropyl ether(DIPE) Ethyl-t-butyl ether(ETBE) Tert-amyl methyl ether(TAME)and Tert-Butanol(TBA)by EPA 8260 or 82608 1,2-Onhioroethane(1 2-DCA)analyzed by EPA Method 8260B Total Lead by EPA Method 7420 or 60101200 7 ND<1=Not Detected at reporting limit of 1 ppm NA =Not Analyzed