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TABLE 1 (CONTINUED <br /> LIQUID LEVEL DATA <br /> SHELL SERVICE STATION <br /> 620 WEST CHARTER WAY,STOCKfON CALIFORNIA <br /> (Measurements m 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-3 10/30/91 8876 3289 NR 5587 — NR <br /> 01/28/92 3328 NR 5548 -- NR <br /> 04/30/92 3275 NR 5601 -- 399 <br /> 07/10/92 3335 NR 5541 — 399 <br /> 10/09/92 3002 --- 5874 -- 398 <br /> MW-4 10/30/91 8846 FLH NR FLH 004 NR <br /> 01/28/92 FLH NR FLH 03 NR <br /> 04/30/92 3524 3523 53 23* 001 NR <br /> 07/10/92 3686 3668 51 73* 018 NR <br /> 10/09/92 NR NR NR NR <br /> NOTES i = Measurement and reference elevation taken from notch/mark on top north side of well casing <br /> 2 = Elevation referenced to mean sea level <br /> FLH = Floating liquid hydrocarbons <br /> No free product or 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 246pecember 8 1992 <br />