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Table 1 Groundwater Monitoring Well Data, can't Well No Date Well Depth to Casing Water Floating Depth (ft) Water (ft) Elev (ft) Elev (ft) Product MW-4 8/20/97 18 47 973 4760 37 87 None MW-4 12/10/97 1 8 47 926 ----- 38 34 None MW-4 3/31 /98 18 18 861 ----- 38 99 None MW-4 6130/98 18 18 898 ----- 38 62 None MW-4 9/29/98 17 83 974 ----- 37 86 None MW-4 12/29/98 17 83 933 ----- 3827 None MW-4 3/29/99 17 93 915 ----- 38 45 None Groundwater Gradient Groundwater elevations were plotted to a known datum to prepare a groundwater contour map The groundwater flow direction was toward the north-northeast at sampling time, and a flow gradient of 0 033 was calculated Water levels have declined slightly, and this is attributed to normal aquifer discharge Historically observed groundwater flow trends typically vary from north-northeasterly to north-northwesterly Chemical Analysis and Results I • The samples were transported to Chromalab, Inc in Pleasanton, CA The groundwater samples were analyzed using EPA Methods 5030/ 8015 and 602 for Total Petroleum Hydrocarbons as Gasoline (TPHG), Benzene, Toluene, Ethylbenzene and Xylene (BTEX) and fuel oxygenates including Methyl-tent-butyl-ether (MTBE) by EPA Method 8260 The analytical reports are attached, and the results are listed below in Table 2 (see Table 3 for historic data) Table 2 Groundwater Chemical Data Well No Date TPHG" Benzene Toluene Ethylbenz Xylene Fuel Ox ------------------------------- u g/I ----------------------------- MW-1 3129199 13,000 790 140 1,000 900 ND MW-2 3129/99 ND ND ND ND ND ND MW-3 3/29/99 ND ND ND ND ND ND MW-4 3129/99 120 ND ND ND ND ND Blank 3129/99 ND ND ND ND ND ND ND - None detected NA - Not Analyzed ug/I - micrograms per liter Fuel Ox - Fuel oxygenates including MTBE by Method 8260 1,2-Dichloroethane ND for all wells for 3129199 sampling Page 3