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TABLE 1 CUMULATIVE ANALYTICAL RESULTS - SOIL San Joaquin County Parking Garage, 130 N. Hunter Street, Stockton, California OXYGENATES SAMPLE DATE ETFIYL. To LOCATION SAMPLED SAMPLE SDEPTH TPH-G BENZENE TOLUENEEN ENE XYLENE MTBE DIPE ETBE TAME TBA 1 ,2-DCA LEADL TPH-D TPH-MO TPH-K B-1 05/27/94 Bi -20 20 290 ND<1 ND<1 4.7 8.0 NA NA NA NA NA NA 7.0 NA I NA NA B-2 05/27/94 82-18 18 250 ND<1 ND<1 1 .7 7.0 NA NA NA NA NA NA 8.1 NA I NA NA TANK 1 08/13/96 TK1 -N 12 12 960 ND<0.25 0.95 3.3 3.4 ND<0.25 NA NA NA NA NA ND<5 NA NA NA TKi -S 12 12 2,000 ND<2.5 26 7.1 16 ND<0.25 NA NA NA NA NA 11 NA NA NA TANK 2 08/13/96 TK2-N 9 9 270 ND<0.1 0.11 0.6 0.63 NA NA NA NA NA NA 9 NA NA NA TK2S 9 9 1 ,000 ND<0.5 0.89 2.8 2.2 NA NA NA NA NA NA 6 NA NA NA DISPENSER 08/13/96 DISPENSER NA 12,000 67 710 220 1 ,200 ND<0.25 NA NA NA NA NA 215 ND<100 ND<1 ,000 2,100 j G-1 02/02/01 G7-10 10 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.01 NA 6.3 ND<7 N0<10 ND<7 G1-20 20 ND GI-25 25 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 NA NA ND<1 ND<10 ND<1 G1-30 30 2,000 0.56 0.26 16 15 ND<0.2 ND<0.2 ND<0.2 ND<0.2 ND<0.2 NA 8.6 ND<500 ND<10 550 G1 -35 35 240 0.1 ND<0.05 1 .2 1 .4 ND<0.05 ND<0.05 ND<0.05 ND<0.05 ND<0o5 NA NA ND<400 ND<10 390 G-2 02/02/01 G2-20 20 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND< 0.005 ND<0.005 ND<0.005 NO<0.005 NA NA ND<1 ND<10 ND<1 G2.25 25 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0o05 ND<0.005 ND<0.005 ND<0.005 ND<0.005 NA NA ND<1 NO<10 ND G2-30 30 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND< 0.005 ND<0.005 NA NA ND<1 ND<10 ND G-3 02/02/01 G3-20 20 4,600 0.68 0.22 80 4.2 ND<0.2 ND<0.2 ND<0.2 ND<0.2 ND<2 NA NA ND<2,500 ND<10 2,300 G3-25 - 25 860 ND<0.05 ND<0.05 0.2 0.21 ND<0.05 ND<0.05 ND<0.05 ND<0.05 ND<0.05 NA NA ND<600 19 510 G330 1 30 91100 1 .9 2.3 170 500 ND<0.05 ND<0.05 ND<0.05 ND<0.05 ND<0.05 NA NA ND<6,000 ND<100 5,900 MW-1 07/11 /02 MW1-10 10 ND<1 ND<0.005 ND<0.005 ND40.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 NA ND<1 ND<10 NA MW1-15 15 480 ND<0.26 3.8 7.4 5.2 ND<1 N0<1 ND<1 ND<1 ND<1 ND MW1-35 35 4,100, 5.5 7.0 58 240 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 NA ND<1 ND<10 NA MW-2 07/11 /02 MW2-16 15 81000 63 52 130 210 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 NA ND<1 ND<10 NA MW2-20 20 51900 3.7 29 110 480 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<2.5 NA ND<1 ND<10 NA MW2-25 25 820 ND<0.25 5.4 15 42 ND<0.25 ND<0.25 ND<0.25 ND<0.25 ND<0.25 ND<0.25 NA ND<7 ND<10 NA MW2-30 30 29000 ND<1 .2 ND<1 .2 38 120 ND<1 ND<1 ND<1 ND<1 ND41 140<7 NA ND<1 ND<10 NA MW2-35 35 11600 13 6.0 35 95 ND<1 ND<1 ND<1 ND<1 ND<1 ND<1 NA ND<1 ND<10 NA MW4 07/12/02 MW4.20 20 ND MW4-25 25 ND<1 ND<p.pp5 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<p.pp$ ND<0.005 NA ND<1 ND<10 NA MW4-30 30 ND 0.005 ND<0.005 NA ND<1 ND<70 NA MW4-35 35 ND<1 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 ND<0.005 NA ND<1 ND<70 NA NOTES: All results are reported in milligrams per kilogram (mg/kg), which translates to parts per million (ppm) Sample depths in feet below ground surface Total Petroleum Hydrocarbons as Gasoline (TPH-G) and benzene, toluene, ethylbenzene, xylenes (BTEX) analyzed by EPA Methods 802018015M or 82608 Oxygenates: Methyl tertiary butyl ether (MTBE), Di-isopropyl ether (DIPS), Ethyl-t-butyl ether (ETRE), Tert-amyl methyl ether (TAME) and Tert-butanol (TBA) analyzed by EPA Method 8260E Total lead by EPA Method 7420 (212101 Samples analyzed by EPA Method 6010) 1 ,2-Dichloroethane (1 ,2-DCA) analyzed by EPA Method 82608 TPH-Dlesel (TPH-D), TPH-Motor Oil (TPH-MO), and TPH-Kerosene (TPH-K) analyzed by EPA Method 8015M ND<1 = Not Detected at reporting limit of 1 ppm NA = Not Analyzed for specified compound