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Table 3 , continued • Results of Certified Laboratory Analysis of Groundwater Samples from Monitoring Wells MW-1 , MW-2 , and MW-3 August , 1993 - August 31 , 1994 Date/ Well Deptn to :PH-0 TPH-G B T E X Number Water ( ppb) (ppb) (ppb) 06/24/ 94 MW-1 7 30 ft N D 730 22 3 1 12 20 MW-2 6 98 ft N D N D N D N D N D N D MW-3 6 54 ft N D N D N D N D N D N D 08/ 31/94 MW-1 7 50 ft N D N D N D N D N D N D MW-2* 6 22 ft N D 100 1 1 0 7 0 9 2 5 MW-3 6 82 ft N D N D N D N D N D N D ------------ -------- --------------------------------------- Method Detection 50 50 0 5 0 5 0 5 0 5 Limit ----------------------------------------------------------- . *The sample acquired from MW-2 was also analyzed for Total Oil and Grease (TOG) SM 5520 C&F The sample contained 1 6 ppm (mg/ 1 ) TOG TPH-D Total Petroleum Hydrocarbons as Diesel TPH-G Total Petroleum Hydrocarbons as Gasoline BTEX Benzene , toluene , ethylbenzene, total xylenes ppb Parts per billion N D Not detected SUMMARY OF OTHER ENVIRONMENTAL ACTIVITIES PERFORMED DURING THE PAS=' QUAPTTR Calculation of the Direction and Slone of Groundwater Flow The depths to groundwater measured in MW-1 , MW-2 , and MW-3 on August 31 , 1994 and previously determined wellhead elevations were used to develop groundwater contours by the interpo+ ation method and calculate the direction and slope of groundwater flow When the contours were plotted, groundwater was found to be flowing to the east As this direction of flow is inconsistent with both historical and other recently acquired data , EPM believes that MW-3 has again been damaged by heavy vehicle traffic (previously reported on 3/10-11/ 94 ) resulting in a change in the • eievation of this wellhead As the direction of ground- Page 7