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TABLE 1 ftNTINUED) <br /> LIQUID LEVEL DATA <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY STOCKTON CALIFORNIA <br /> (Measurements in feet) <br /> Monitoring Reference Depth to Depth to Groundwater Product Well <br /> Well Date Elevation Groundwater' Product' Elevation2 Thickness Deptth <br /> (top of casing)' <br /> MW-9 04/26/91 8835 3505 NR 5330 SS NR <br /> 07/23/91 3306 NR 5529 SS NR <br /> 08/01/91 3233 NR 5602 --- NR <br /> 10/30/91 NM NR --- --- NR <br /> 01/28/92 3572 NR 5263 Sheen NR <br /> 04/30/92 3046 NR 5789 -- 389 <br /> 07/10/92 3412 NR 5423 --- 389 <br /> MW-10 07/23/91 8837 3762 NR 5075 --- NR <br /> 08/01/91 3775 NR 5062 --- NR <br /> 10/30/91 3875 NR 4962 --- NR <br /> 01/28/92 3820 NR 50 17 --- NR <br /> 04/30/92 3714 NR 51 23 --- 457 <br /> 11 1 07/10/92 3817 NR 50 20 --- 45 4 <br /> NOTES 1 = Measurement and reference elevation taken from notch/mark on top north side of well casing <br /> 2 - Elevation referenced to(mean sea level or arbitrary benchmark) <br /> FP = Free phase hydrocarbons <br /> NM = Not measured <br /> = No free product or sheen <br /> PL = Pump location <br /> NA = No access <br /> HS = Heavy sheen <br /> LS = Light sheen <br /> SS = Slight sheen <br /> NR = Not reportted by Emcon Associates of Sacramento California <br /> Aegis Environmental Inc <br /> 91 246/Septernber 1 1992 <br />