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vapors using a PID The readings were recorded on the boring logs The soil was then <br /> described in accordance with the Unified Soil Classification System (see Boring Logs, <br />' Appendix A) <br /> 3.3 Well Completion <br />' Borings MW-1, MW-2 and MW-3 were completed as groundwater monitoring wells using <br /> a 0 020-inch slotted 2-inch diameter PVC casing from 60 to 80 feet Blank PVC casing was <br />' installed from 60 feet to surface grade The filter pack (#3 lonestar sand) was installed from <br /> 57 to 80 feet Each well was developed by using a surge block to set the filter pack Two feet <br /> of bentonite pellets were placed and hydrated on the filter pack Each well was then grouted <br />' to the surface with Portland cement <br /> 3.4 Monitoring Well Sampling <br />' On January 17, 1995, groundwater depths in all wells were measured relative to the top of <br /> the casing using a Solinst water level meter The relative prezometrrc levels and hydraulic <br />' gradient were determined from these data (Table 1) <br /> After groundwater depths were measured, a PVC bailer was used to purge standing water <br />' from each well Approximately 10 gallons of water were removed to stabilize temperature, <br /> pH and conductivity (Appendix B) Stabilization parameters were measured at one-gallon <br /> intervals using an ICM water analyzer Purge water was placed in 55-gallon DOT drums and <br /> stored on-site <br /> Groundwater samples were collected from each well using a new, disposable plastic bailer <br />' Samples were collected in 40-m1 EPA vials, placed in a chilled container, and transported <br /> to Pan-Ag for analysis <br /> 3.5 Monitoring Well Surveying <br /> The casing elevations of the three monitoring wells were surveyed relative to an arbitrary <br /> reference point The relative elevations were then calculated Casing elevations for all wells <br /> are included in Table I <br /> 3.6 Laboratory Analysis of Soil and Water Samples <br /> Thirty soil samples were analyzed for total petroleum hydrocarbons (TPH as gasoline) and <br /> volatile aromatics(BTE&X) in accordance with EPA methods 8015m and 8020, respectively. <br /> Selected soil samples were analyzed for total lead in accordance with EPA method 6010 <br /> Each water sample was analyzed for total lead, TPH as gasoline and BTE&X in accordance <br /> with EPA methods 6010, 8015m and 602, respectively <br /> ti <br /> I <br /> Cleabyeal Add Serving lee <br /> ITop FW-Z PIEWF050.e 1993 <br />