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Table 1 Recent Groundwater Analytical Data Stockton Terminals Technical Committee Port of Stockton Stockton, California Ethyl- Total MTBE TPH as TPH as Sample Sampling Benzene Toluene Benzene Xylenes 8260 Gasoline Diesel MBAS Comments Identification Date (Ng/L) (ug/L) (Ng/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (Ng/L) TS-8 05/08/08 1,800 130 1,100 4,700 <5.0 28,000 7,400 - TS-8 08/07/08 340 48 59 470 <1.5 10,000 12,000 - TS-8 11/06/08 440 53 160 900 <1.5 9,700 15,000 - S-8 02/05/09 2,000 100 870 4,100 2.3 23,000 <10,000 4 - TS-9 05/05/08 - -- - - - - - - SA(1,3) TS-9 08/06/08 <0.50 <0.50 <0.50 <0.50 <0.50 <50 140 - TS-9 11/03/08 - - -- - - -- - - SA(1,3) TS-9 02/04/09 0.54 <0.50 <0.50 <0.50 <0.50 730 130 - 5-10 05/07/08 <0.50 <0.50 <0.50 <0.50 2.2 <50 280 - S-10 08/06/08 0.69 <0.50 <0.50 1.2 3.5 110 330 - TS-10 11/06/08 1.3 <0.50 <0.50 1.1 2.0 100 240 - TS-10 02/04/09 0.84 <0.50 <0.50 1.1 4.4 91 190 - TS-11 05/07/08 290 25 130 380 9.3 4,400 2,700 - TS-11 08/05/08 180 17 35 130 9.2 2,100 9,700 - TS-11 11/06/08 65 2.4 2.3 25 4.2 460 3,800 - S-11 02/05/09 48 2.9 5.0 45 3.9 740 270 - TS/M-1 05/07/08 <0.50 <0.50 <0.50 <0.50 4.3 <50 260 - TS/M-1 08/06/08 <0.50 <0.50 <0.50 <0.50 16 <50 320 TS/M-1 11/07/08 <0.50 <0.50 <0.50 <0.50 <0.50 1,200 <1,500 ° - TS/M-1 02/04/09 <0.50 <0.50 <0.50 <0.50 <0.50 <50 130 - TS/M-2 05/08/08 4,100 56 570 500 <9.0 14,000 86,000 - SPH Sheen observed TS/M-2 08/07/08 3,400 44 480 400 9.4 16,000 230,000 - SPH Sheen observed TS/M-2 11/07/08 2,100 25 320 700 <9.0 240,000 1,400,000 - SPH Sheen observed TS/M-2 02/05/09 1,100 33 560 460 <4.0 44,000 720,000 - SPH Sheen observed TS/MW-1A 05/08/08 9.6 0.69 13 23 6.0 1,900 2,600 - TS/MW-1A 08/07/08 1.3 <0.50 13 8.4 3.4 1,800 1,900 - TS/MW-1A 7 11/07/08 1.4 <0.50 6.3 8.1 2.6 1,700 1,300 - TS/MW-1A 02/04/09 1.4 <0.50 1.6 11 2.9 1,300 520 - 1Q09 ST-TC gwtables.xls Page 13 of 15