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Upon arriving at the site with precleaned equipment, the sampler measured the depth to water, sounded the well and checked for the presence of free phase product The sampler proceeded to purge the well (a calculation was done for each well following sounding measurements) of groundwater using the disposable bailer The well was then allowed to recharge Between each well volume purge, conductivity, pH, and water temperature readings were obtained and noted on the Groundwater Sampling Information Sheet (see Appendix A) Once the stabilization of the readings were noted, the sample was collected from the well Purge water was stored on-site In drums pending analytical results The well sampling Information sheet containing data on temperature, conductivity, pH, depth to water, and well volumes purged can be found in Appendix A Once the well recovers to about 80% of the Initial water level measurement, a new disposable bailer was used to obtain the groundwater sample which was placed Into the appropriate, laboratory prepared sample containers leaving no headspace, and immediately placed on Ice for shipment to Priority Environmental Labs In Milpitas, California (a State Certified Testing Lab) under proper chain-of-custody documentation The chain-of-custody and the Laboratory Analysis Results can be found In Appendix B LABORATORY FINDINGS Three groundwater samples were analyzed for Total Petroleum Hydrocarbons as Gasoline (TPHG) and Benzene, Toluene, Ethylbenzene and Xylene (BTEX) using EPA Methods 8015 and 8020 respectively The analytical results of the groundwater samples revealed the following (see Table 2) Table 2. Groundwater Analytical Results Well Number Date TPHG Benzene Toluene Ethylbenzene Xylene MW- 1 6/1 6/95 ND ND ND ND ND MW-2 6/16/95 6200 7 2 2 5 13 22 MW-3 6/1 6/95 4200 16 64 8 3 20 Depth to water measured in feet below top of PVC casing Groundwater elevation measured in feet above Mean Sea Level ND-Not Detected Groundwater elevation equals surveyed top of PVC casing elevation minus depth to water (49 40)Surveyed elevation of the top of PVC casing TPHG-Total petroleum hydrocarbons as gasoline results in ug/L parts per billion(ppb) BTEX-Benzene,Toluene,Ethyl-Benzene,Xylene results in ug/L parts per billion(ppb) GROUNDWATER CONTOUR MAP AND GRADIENT A groundwater contour map was prepared for June 16, 1995 from the data listed In Table 1 (see Figure i) Groundwater elevation contours were plotted from the measurements and plotted to a known datum The groundwater flow was In a northeast direction under a calculated . gradient of 0 002