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and Xylene (BTEX) . The soil samples taken below the UST in native soil showed 4, 300 and 540 parts per million (PPM) TPHG at 6 . 5 and 9 feet below grade. The results of these analysis were documented in a report by JPCA dated August 12, 1996 . Soil was excavated to about 10 feet and aerated. The excavation was left open for approximately one year. The excavation was back filled with clean fill in October 1997 . Four Monitoring Wells were constructed in November 1997 . The soil in the upper five feet had minor concentrations of hydrocarbon contamination. No detectable contamination for the Oxygenates was found in the soil samples. The groundwater had less than 1 PPM TPHG and 20 ppb Benzene contamination. One groundwater sample from MW-3 had 5 . 6 ppb of MTBE contamination. The remaining groundwater samples had no detectable concentrations, i. e. < 5 ppb, of oxygenates. The "potable water well" was destroyed, in accordance with the applicable regulations, on September 14, 1998 . FIELD WORK On March 10 , 1999, John P. Cummings accompanied by Jacob Palentino of JPCA purged the wells and collected groundwater samples from the 4 Monitoring Wells. = ,J Gradient Calculation Prior to purging and sampling the depth to groundwater was measured by an electronic probe in the four Monitoring Wells on site. The water depth was measured from a mark located on the top of the casings. The groundwater gradient data are presented in Table 1. The gradient calculated for the monitoring wells is N110W or 3490 at 0 . 003 ft/ft. The groundwater gradient is depicted in Figure 3 . Survey and well data are in Appendix A. TABLE 1 Groundwater Elevations (ft) -- March 10, 1999 Well ID To of Casing De th to Water Groundwater Elevation MW-1 49 . 50 8 . 51 40 . 99 MW-2 48 . 66 7 . 78 40 . 88 MW-3 47 . 41 6 . 55 40 . 86 MW-BT1 48 . 74 7 . 76 40 . 98 2