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Table 1
<br /> Recent Groundwater Analytical Data
<br /> Stockton Terminals Technical Committee
<br /> Port of Stockton
<br /> Stockton, California
<br /> Ethyl- Total MTBE TPH as TPH as
<br /> Sample Sampling Benzene Toluene Benzene Xylenes 8260 Gasoline Diesel MBAS Comments
<br /> Identification Date (Ng/L) (Ng/L) (pg/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L) (Ng/L)
<br /> R/MW-21C 05/06/08 0.92 <0.50 <0.50 <0.50 <0.50 <50 220 3.2 -
<br /> R/MW-21C 08/05/08 <0.50 <0.50 <0.50 <0.50 <0.50 <50 62 2 -
<br /> R/M W-21 C 11/05/08 13 <0.50 <0.50 <0.50 <0.50 <50 <50 -
<br /> R/MW-21C 02/03/09 7.0 <0.50 <0.50 <0.50 <0.50 <50 58 2 -
<br /> AR/MW-22A 05/09/08 500 74 290 450 1,300 7,100 <3,000 ' -
<br /> R/MW-22A 08/07/08 490 240 310 1,100 1,400 12,000 <3,000 ' -
<br /> R/MW-22A 11/06/08 720 1,300 550 2,600 780 17,000 <3.000 ' -
<br /> R/MW-22A 02/06/09 790 1,900 1,000 4,200 1,000 26,000 <4,000 ' -
<br /> AR/MW-23A 05/09/08 7,500 3,400 1,700 7,400 8,200 56,000 74,000 - SPH Sheen observed
<br /> AR/MW-23A 08/07/08 8,100 7,000 9,700 8,900 5,300 54,000 1,100,000 -
<br /> R/MW-23A 08/26/08 8,400 4,300 2,400 12,000 4,700 120,000 38,000 -
<br /> R/MW-23A 7 11/06/08 7,300 3,600 2,100 12,000 4,000 100,000 700,000 -
<br /> R/MW-23A 02/06/09 8,100 4,400 2,000 8,600 3,500 54,000 190,000 -
<br /> AR/MW-24A 05/09/08 820 740 1,700 12,000 810 52,000 <5,000 ' - SPH Sheen observed
<br /> AR/MW-24A 08/07/08 860 800 1,700 12,000 490 48,000 <6,000 ' -
<br /> R/MW-24A 08/26/08 1,500 2,900 1,200 9,300 670 45,000 2,900 -
<br /> R/MW-24A 11/06/08 940 820 1,600 10,000 630 44,000 <5,000 ' -
<br /> R/MW-24A 02/06/09 2,000 1,600 2,000 12,000 860 54,000 <6.000 ' -
<br /> PORT OF STOCKTON
<br /> PS/MW-1 M 05/06/08 0.85 <0.50 <0.50 <0.50 <0.50 <50 <50 -
<br /> PS/MW-1 M 06/25/08 0.65 <0.50 <0.50 <0.50 <0.50 <50 <50 -
<br /> PS/MW-1 M 07/28/08 0.71 <0.50 <0.50 <0.50 <0.50 <50 <50 -
<br /> PS/MW-1 M 08/05/08 <0.50 <0.50 <0.50 <0.50 <0.50 <50 70 -
<br /> PS/MW-1M 11/03/08 <0.50 0.66 <0.50 0.73 <0.50 <50 52 -
<br /> PS/MW-1 M 02/03/09 <0.50 <0.50 <0.50 <0.50 <0.50 <50 84 2 -
<br /> PS/MW-11 05/07/08 <0.50 <0.50 <0.50 <0.50 8.0 <50 1,300 --
<br /> PS/MW-11 08/06/08 <0.50 <0.50 <0.50 <0.50 <0.50 <50 1,600 --
<br /> PS/MW-11 11/05/08 <0.50 <0.50 <0.50 <0.50 <0.50 <50 460 -
<br /> PS/MW-11 02/03/09 <0.50 <0.50 <0.50 <0.50 <0.50 <50 420 -
<br /> 1Q09 ST-TC gwtables.xls Page 6 of 15
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