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TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER SAMPLING <br /> BP OIL COMPANY SERVICE STATION NO.11219 <br /> 1403 COUNTRY CLUB BOULEVARD,STOCKTON,CALIFORNIA <br /> ALISTO PROJECT NO.10-037 <br /> WELL DATE OF CASING DEPTH TO PRODUCT GROUNDWATER TPH-G 9 T E x LAB <br /> ID SAMPLING/ ELEVATION (a) WATER THICKNESS ELEVATION (b) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> MONITORING (Feet) (Fast) (Feet) (Feet) <br /> MW-6 08/05/91 5.80 29.82 0.00 -24.02 ND ND ND ND NO PRE <br /> MW-6 06115/91 5.80 - --- - - - - - <br /> MWf 12/09/91 5.80 30.42 0.00 -24.62 ND ND ND ND ND PRE <br /> MW-6 03!09192 5.80 29.53 0.00 -23.73 ND ND ND ND NO PRE <br /> MW-6 06/19/92 5.80 2924 0.00 -23.44 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-6 09/18/92 5.80 31.03 0.00 -25.23 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-6 12/08/92 5.80 31.42 0.00 -25.62 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-6 03/11/93 5.30 28.95 0.00 -23.15 NDc50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 PACE <br /> MW-7 08/05/91 621 30.82 0.00 -24.61 70 19 ND ND ND PRE <br /> MW-7 08/15/91 6.21 --- - - - - - --- -- PRE <br /> MW-7 12109/91 6.21 31.36 0.00 -25.15 ND 19 ND 12 ND PRE <br /> MW-7 03/09/82 6.21 30.15 0.00 -23.94 ND ND ND ND ND PRE <br /> MW-7 06/19/92 621 30.19 0.00 -23.98 ND<50 ND<0.5 ND<0.5 ND<0.5 NDa0.5 ANA <br /> MW-7 09/18192 6.21 31.98 0.00 -25.77 90 N13<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-7 12109!92 6.21 32.33 0.00 -26.12 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> CC-1 (d) 12109W 621 32.33 0.00 -26.12 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> MW-7 03/11193 6.21 29.85 0.00 -23.64 110 3.1 0.8 22 1.4 PACE <br /> QC-2 (6) 09/i8/92 - - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ANA <br /> Opt (g) 12W/92 - -- - - ND<50 ND<0.5 ND-c0.5 ND<0.5 ND<0.5 ANA <br /> Opt (a) 03111/903 - - - ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 PACE <br /> ABBREVIATIONS: NOTES: <br /> TP" Total petroleum hydrocarbons as gasoline (a) Casing elevations surveyed on August 20,1991, <br /> B Benzene to the nearest 0.01 foot relative to mean sea level. <br /> T Toluene <br /> E Ethybenzene (b) In feet relative to mean sea level. <br /> x Total xylenes <br /> ND Not detected above reported detection limit (c) MW-2 destroyed on 02/05/91. <br /> ppb Parts per billion <br /> Not analyzedlavailable (d) Blind duplicate. <br /> PRE Precision AnaWal Laboratory <br /> ANA Anametrix,Inc. (e) Travel blank. <br /> 16-May-93 PAGE 2 <br />