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r <br /> r <br /> r <br /> r <br /> Date Amount <br /> 28 September 2000 1 gal <br /> r 7 November 2000 1 gal <br /> r 31 May 2000 2 cups <br /> r <br /> r 11 July 2000 3 cups <br /> r 26 July 2000 3 cups <br /> r <br />. 27 January 2000 1 gal <br /> 16 February 2000 1 gal <br />• 17 March 2000 0 5 gal <br />• <br /> 7 April 2000 0 5 cup <br /> r 20 April 2000 1 cup <br />• Total 7.6 gal. <br /> 40 FINDINGS <br /> 4.1 Groundwater Level Measurements <br /> Groundwater is present beneath the site at a depth of 29 21, 28 60, 29 10 and 28 65 feet below <br /> top of casing (btc), as measured on 21 November 2000 in the four groundwater monitoring wells <br />• (MW-1, MW-2, MW-3 and MW-4 respectively) installed on site The elevation of groundwater <br />• in MW-1, MW-2, MW-3 and MW-4 was calculated by El to be at 16 19, 15 18, 16 26 and 16 30 <br />• feet below sea level respectively, based upon casing elevation data from Kier & Wright Civil <br /> i Engineers and Surveyors <br />. El utilized the groundwater measurements to determine the direction of groundwater flow and <br />• the groundwater gradient present beneath the site The groundwater direction of flow was <br /> calculated to be southeasterly at a gradient of 0 0112 ft/ft (Figure 3) <br /> 4.2 Photoronization Detector Readings <br />. Field instrument readings (photoionization detector or PID) indicated the presence of volatile <br /> organic compounds at moderate levels in all three (3) soil borings (not confirmed by soil <br /> 30 analyses in B-7) These PID data indicate that volatile petroleum hydrocarbon compounds are <br />• Environeering,Inc Project No 00-01108 7 <br />• <br /> 0 <br />