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��Clay�tori <br /> Depth to Water (btoc) Total Depth (btoc) Casing Water <br /> Well No (feet) (feet) Elevation Elevation <br /> (feet MSL) (feet MSL) <br /> ' MW-1 826 1 2482 431 -3 95 <br /> MW-2 11 38 2786 709 -429 <br /> ' MW-3 1176 2837 806 -370 <br /> btoc means below top of casing <br /> ' The wells were purged using a submersible pump with approximately 12 gallons of <br /> groundwater (roughly 4 well volumes) purged from each well Groundwater parameters <br /> (pH, conductivity, redox, temperature, and turbidity) were measured initially and <br /> ' following every three gallons of discharge The completed Groundwater Sampling Data <br /> Sheets are included in Appendix A <br />' Groundwater samples were obtained using disposable Teflon® bailers with a bottom- <br /> emptying device All sample containers, provided by the laboratory, were filled with <br /> groundwater, sealed, packed in protective plastic bags, placed in a cooler with ice, and <br /> submitted under chain of custody protocol to Severn Trent Laboratories, Inc (STL) in <br /> Pleasanton, California STL is a Cali forma-certi fied laboratory Groundwater samples <br /> from the three monitoring wells were submitted for analysis of Total Petroleum <br /> Hydrocarbons as diesel fuel (TPH-diesel) in accordance with United States <br /> Environmental Protection Agency(USEPA) Method 8015M Each sample was also to be <br />' analyzed for TPH as gasoline (TPH-gas) in accordance with USEPA Method 8015M, <br /> benzene, toluene, ethylbenzene, xylene(s) (BTEX), and Methyl tert-butyl ether(MTBE) <br /> in accordance with USEPA Method 8021 <br />' GROUNDWATER ANALYTICAL RESULTS <br /> TPH-gas, benzene, ethylbenzene and MTBE were not detected in any of the three <br /> groundwater samples Toluene and xylene(s) were detected in the groundwater sample <br /> from MW-2 at concentrations of 0 78 micrograms per liter (µg/L) and 0 87 µg/L, <br />' respectively TPH-diesel was detected in each of the groundwater samples at <br /> concentrations of 120 µg/L (MW-1), 130 µg/L (MW-2) and 250 µg/L (MW-3) The <br /> laboratory has flagged each of these diesel values as being a hydrocarbon that sloes not <br />' match the pattern of their diesel standard The results of these analyses are included with <br /> the laboratory reports in Appendix B <br /> Groundwater at the site flows to the southeast at a gradient of 0 0051 The groundwater <br /> flow direction is shown on Figure 3 <br /> 2 <br /> S\Pro)\P02263\Q4 Rpt doc <br />