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f <br /> IAPPENDIX D <br /> VW-5B GROUND WATER ELEVATION CALCULATION <br /> I Larry's Auto <br /> 308 North Grant Street, Stockton, California <br />' Boring VW-5, drilled at an angle of 10° from vertical directed N 80'W,was advanced to a depth of <br /> 55 vertical feet below surface grade(bsg) with a horizontal run of 9 7 feet and was triple-completed <br /> as a vapor extraction remediation well Well VW-5B is screened from 26 5 feet to 41 5 feet bsg The <br /> ground water elevation in MW-513 on 11 March 2004 was 23 33 feet below mean sea level (MSL), <br /> but due to the 10" angle of the well , the adjusted MSL of VW-5B is 22 98 feet below MSL by the <br />' following calculation <br />' d=Adjusted ground water elevation <br /> x=23 33 feet <br /> y=10, <br />' such that <br />' d= xcos y <br /> d=23 33 cos 10 <br />' d= 22 98 <br /> 1 <br /> 1 <br /> • <br />' Advanced GeoEnvzronmental,Inc <br /> 1 <br />