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TABLE 1 (COOUED) <br /> LIQUID LEVEL DATA <br /> SHELL SERVICE STATION <br /> 6131 PACIFIC AVENUE, STOCKTON, CALIFORNIA <br /> (Measurementsin feet) <br /> Monitoring Date Reference Depth to Depth to Groundwater Thickness of Well <br /> Well Elevation Groundwater' Floating <br /> Elevation' Floating Liquid Depth <br /> (top of casing)' Liquid q Hydrocarbons <br /> Hydrocarbons' <br /> MW-3 02.05.91 101.65 56.85 56.83 44.82* 0.02 64.90 <br /> 03/05/91 57.95 57.92 43.72* 0.03 6488 <br /> 04/09/91 56.95 56.93 44.72* 0.02 64.95 <br /> 05/06/91 5755 57.53 44.14* 0.02 64.85 <br /> 06/06/91 57.38 --- 44.27 --- 64.93 <br /> 07/17/91 58.02 57.94 43.69* 0.08 <br /> 08/02/91 58.49 57.79 43.69* 0.70 64.93 <br /> 09/12/91 58.72 57.89 43.55* 0.83 <br /> 10/08/91 58.93 57.85 43.53* 1.08 --- <br /> 02/26/91 55.65 55.6446.01* 0.01 --- <br /> I <br /> NOTES ' - Measurementand reference elevation taken from notch/markon top north side of well casing <br /> 2 = Elevation referencedto an arbitrary bench mark <br /> - Not measured <br /> Well Depth Measurementfrom top of casing to bottom of well <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,diesel= 0 80 <br /> LHT= Measured liquid hydrocarbon thickness <br /> I <br /> i <br /> Aegis Environmental Inc <br /> April t1 1992 <br />