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Table 1
<br /> Groundwater Monitoring Data and Analytical Results
<br /> Former Unocal Service Station No. 0187
<br /> 437 East Miner Avenue
<br /> Stockton, California
<br /> Product
<br /> WELL IDI DATE DTW S.I. GWE Thickness TPHg B T E X MTBE
<br /> TOC-(ft.) (A) (ff L ) (MSI) Of) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L)
<br /> NP-1-65
<br /> 10.14 02/05/99 25.37 -- -- 0.00 73,000 7,000 19,000 2,400 14,000 --
<br /> 05/07/99 24.19 -14.05 0.00 86,000 6,400 15,000 2,500 14,000 --
<br /> 08/20/99 24.80 -14.66 0.00 65,00010 3,800 11,000 2,000 10,000 --
<br /> 11/23-24/99 25.64 -15.50 0.00 50,40010 2,570 8,240 1,440 7,070 <1,000/<1004
<br /> 02/22-23100 24.90 -14.76 0.00 48,00010 3,100 10,000 1,700 8,100 <1,0001<104
<br /> 05/30-31/00 23.57 -13.43 0.00 36,40010 1,510 5,650 1,100 5,410 5111<40.04
<br /> 08131-09/01100 24.47 -14.33 0.00 29,60010 1,460 5,020 848 4,230 <2,000/<40.04
<br /> 10,92 11120-22/0022 24.92 -14.00 0.00 38,40010 1,660 6,510 1,200 5,710 <1,000/<66.74
<br /> 12/07/00 24.89 -13.97 0.00 34,20010 1,710 5,900 980 4,730 --
<br /> 02/26-27101 24.35 -13.43 0.00 <50.0 <0.500 0.609 <0.500 0.544 <2.50/<2.04
<br /> 05/14-16/01 24.43 -13.51 0.00 93910 18.5 118 12.6 160 <25.01<2.004
<br /> 08113-15101 25.57 -14.65 0.00 5,90011 160 980 180 870 <1001<2.04
<br /> 11126-28101 26.39 -15.47 0.00 19,00010 320 2,400 450 2,600 <1,000/<504
<br /> 02125-27102 25.59 -14.67 0.00 32,000" 440 3,800 900 3,900 <500/<5.04
<br /> 05107-09/02 25.53 -14.61 0.00 10,00019 82 700 230 940 <250/<5.04
<br /> 08112-14102 27.65 -16.73 0.00 2,80029 81 320 190 120 431<1.04
<br /> 11105-06/02 27.92 -17.00 0.00 5,700 110 250 400 1,300 <100/<2.04
<br /> 02104-06/03 28.03 -17.11 0.00 5,200 120 110 460 1,200 52/<204
<br /> 05127-30103 27.84 -16.92 0.00 3,100 98 110 560 750 18/<2.54
<br /> 08/26-29/03 29.19 -18.27 0.00 1,600 46 35 200 250 561<0.504
<br /> 12/2/03 29.56 -18.64 0.00 -- -- -- -- -- --
<br /> 02/16-18104 28.96 -18.04 0.00 5,800 160 290 750 570 <0.504
<br /> 04/19/04 28.49 -17.57 0.00 -- -- -- -- -- --
<br /> 08/16/04 30.23 -19.31 0.00 4,500 211 56 58 450 140 <10.04
<br /> 11/15/04 30.64 -19.72 0.00 2,10021 14 55 100 130 <0.504
<br /> 02/14/05 28.45 -17.53 0.00 1,300 " 9.7 49 57 110 • . <0.50 4
<br /> 06940-325 31 of 39 ENSR Corporation
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