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TABLE 1 <br /> r <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' Elevation Thickness Depth <br /> (top of casing)' <br /> MW-1 04/26/91 8778 31 51 NR 5627 --- NR <br /> 07/23/91 2983 NR 5795 --- NR <br /> 08/01/91 3027 NR 5751 --- NR <br /> 10/30/91 3097 NR 5681 --- NR <br /> 01/28/92 31 28 NR 5650 --- NR <br /> 04/30/92 3121 NR 5657 --- 401 <br /> 07/10/92 31 42 NR 5636 --- 401 <br /> MW-2 04/26/91 8985 NM NR PL NR <br /> 07/23/91 3310 NR 5675 PL NR <br /> 08/01/91 NM NR PL NR <br /> 10/30/91 NM NR NA NR <br /> 11/15/91 FP NR 002 NR <br /> 01/28/92 FP NR 033 NR <br /> 04/30/92 3419 3378 55 97* 041 NR <br /> 07/10/92 1 3492 3455 55 21* 0317 NR <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 /> NR = Not reported by Emcon Associates of Sacramento California <br /> * = Corrected groundwater elevation CDTW= DTW- (SP G x LHT) <br /> CDTW= Corrected depth to water <br /> DTW=Measured depth to water <br /> SP G = Specific gravity unweathered gasoline=0 75 <br /> diesel=0 80 <br /> LHT= Measured liquid hydrocarbon thickness <br /> Aegis Environmental Inc <br /> 91 246/Septernber 1 1992 <br />