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Table <br />Well No. <br />4.2: Groundwater Levels and Product Thickness <br />Elevation of Water <br />Water Level, in feet in feet above <br />below top of casing Mean Sea Level <br />Product <br />Thickness <br />in inches <br />Old 1 10.34 Not surveyed 0.12 <br />Old 2 14.42 Not surveyed 0.00 <br />M-1 2.76 2.36 0.02 <br />M-2 3.79 - 0.13 .0.03 <br />M-3 4.01 - 0.11 0.00 <br />M-4 5.09 + 2.62 0.00 <br />M-5 9.76 3.24 0.00 <br />M-6 12.67 3.83 0.00 <br />M-7 13.90 - 4.64 0.00 <br />M-8 10.20 - 5.36 0.00 <br />M-9 12.83 - 4.80 0.05 <br />M-10 11.92 - 5.62 0.00 <br />The results of groundwater analyses are shown in Table 4.3. <br />Well No. <br />Table 4.3: <br />Total Fuel <br />Hydrocarbons <br />mg/1 <br />Groundwater Sample Analyses <br />Benzene Toluene <br />mg/1 mg/1 <br />Xylene <br />mg/1 <br />Old 1 ND ND ND ND <br />01d2 ND ND ND ND <br />M-1 ND ND ND ND <br />M-2 ND ND ND ND <br />M-3 ND ND ND ND <br />M-4 ND ND ND ND <br />M-5, ND ND ND ND <br />M-6 ND ND ND ND <br />M-7 ND ND ND ND <br />M-8 ND ND ND ND <br />M-9, 1900 65 160 210 <br />M-10 ND ND ND ND <br />WS-Well ND ND ND ND <br />Note (1) ND = Not Detected <br />Limits of Detection: Total fuel hydrocarbons, <10 mg/1 <br />Benzene <10.5 mg/1 <br />Toluene <0.5 mg/1 <br />Xylene <1 mg/1 <br />(2) Analytical methods as per "Guidelines for Addressing Fuel Leaks", <br />Bay Regional Water Quality Control Board, September, 1985. <br />4-3