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N� <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> BP Oil Site No 11191 <br /> 1469 West Hammer Lane, Stockton, CA <br /> WELL DATE OF P/NP CASING DEPTH TO PRODUCT GROUNDWATER GROUNDWATER TPHg B T E X MtBE DO <br /> ID SAMPLING/ ELEVATION WATER THICKNESS ELEVATION ELEVATION (ug//I) (ug/1) (ugll) (ug/1) (ug/1) (ugll) (mg/L) <br /> MONITORING (Feet) (Feet) (Feet) (Feet) CHANGE <br /> (Feet) <br /> MW 1 7372002 4740 -- -- --- - <br /> 1/23/2002 -- 4663 --- 110 ND<1 0 ND<1 0 ND<1 0 1 0 110 <br /> 4/11/2002 1917 4490 --- 2573 70 ND<1 0 ND<1 0 ND<1 0 ND<1 0 37 --- <br /> 7/31/2002 P 19 17 4941 -- -3024 230 ND<1 ND<1 ND<1 ND<1 9,300 184 <br /> 10/11/2002 P 19 17 5142 --- -3225 -201 10,000 42 530 250 190 10,000 --- <br /> 1/30/2003 P 1917 4803 — -2886 339 ND<12,000 ND<120 ND<120 ND<120 ND<120 7,600 ••- <br /> MW 2 1/3/2002 4860 1.800 ND<1 0 RD<1 0 ND<1 0 ND<1 0 1,900 - <br /> 1/10/2002 - 4842 -- 1,400 ND<1 0 ND<1 0 ND<1 0 ND<1 0 1,800 <br /> 4/11/2002 2047 4600 - -2663 1,700 ND<i 0 ND<1 0 ND<1 0 ND<1 0 1,300 -- <br /> 7/31/2002 P 2047 6077 - 3030 ND<50 ND<1 ND<1 ND<1 ND<1 4,500 99 <br /> 10/11/2002 p 2047 5275 --- 3226 -198 9,200 ND<50 250 93 930 11,000 - <br /> 1/30/2003 P 2047 4939 -2892 336 5,300 ND<50 ND<50 ND<50 ND<50 4,900 -- <br /> MW-3 2002 -- 1780 26,6M ND<1 0 ND<1 0 ND<1 0 ND<1 0 27,000 <br /> 4/11/2002 1974 4522 --- 2548 14,000 ND<1 0 ND<1 0 ND<1 0 ND<1 0 18,000 -- <br /> 7/31/2002 P 1974 4977 --- -3003 1,800 ND<1 ND<1 ND<1 ND<1 30,000 139 <br /> 10/11/2002 P 1974 5192 --- -3218 -216 26,000 ND<100 150 ND<100 540 44,000 --- <br /> 1/30/2003 P 1974 4860 --- -2886 332 N0<50,000 ND<500 ND<500 ND<500 ND<500 22,000 --- <br /> -4 1/3/2002 4898 --- --- 6,300 ND<1 0 ND<1 0 ND0 0 <1 0 9,400 <br /> 4/11/2002 2089 4646 -2557 22,000 ND<1 0 ND<1 0 ND<1 0 ND<1 0 11 000 <br /> 7/31/2002 P 2089 5122 - -3033 ND<50 ND<1 ND<l ND<1 ND<1 1,900 158 <br /> 10/11/2002 P 2089 5312 -3223 -190 ND<2500 ND<25 ND<25 ND<25 ND<25 9 000 <br /> 1/30/2003 P 2089 4977 --- -2888 335 N13<50,000 ND<500 ND<500 ND<500 ND<500 14,000 --- <br /> ABBREVIATIONS <br /> TPH G Total petroleum hydrocarbons as gasoline NP Well was not purged prior to sampling <br /> B Benzene by 8260 P Well was purged of three casing volumes prior to sampling <br /> T Toluene by 8260 <br /> E Ethylbenzene by 8250 <br /> X Total xylenes by 8260 <br /> MTBE Methyl tart butyl ether <br /> DO Dissolved oxygen <br /> ug/I Micrograms per liter <br /> --- Not analyzed/applicabletmeasurable <br /> k U5 BP ARCQ1111911Quarterlyll QTR 03/11191 OW MR 1003 <br />