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ileaving a portion of slotted interval and sand pack above the occurrence of groundwater to observe for floating product The sand pack was placed to a point about one to two feet above the slots A bentonite seal was placed atop the sand pack, and a cement grout seal placed atop the bentonite using a tremae line, filling from the bottom to top of the annular space A traffic rated well head access box and security device completed the well Well Head Surve The new well was surveyed to mean sea level and tied into the existing array using a known datum This allows accurate measurements and groundwater gradient to be calculated Momtoring Well Sampling and Development The new monitoring well was developed to remove the drilling muck, grade the sand pack and provide a more complete hydraulic connection to the aquifer The well volume was calculated and a number of those volumes were removed until the water became clear and the amount of sand pumped was minimal The well was allowed to recover prior to sampling and a log of the development was kept for each well Groundwater Sampling Each monitoring well was sampled Each monitoring well was purged by removing a calculated number of well volumes based upon the depth to water in each casing Depth to groundwater measurements were made to the nearest one-one hundredth of one foot, and also checked for the • presence of separate phase product As each purge volume was removed, measurements of pH, electrical conductivity and temperature were taken until these parameters stabilized, which is interpreted as aquifer water entering the casing The sample was then carefully collected with a clean bailer and poured into the appropriate laboratory prepared container with minimum cavitation Each water sample was labeled, logged onto a chain-of-custody form, and placed in a ice chest chilled with crushed ice Upon completion of well sampling, the well was closed and locked Subsurface Conditions Two exploratory soil borings were advanced at on-site and off-site locations shown on Figures 1 and 2 The site is underlain by clayey soils, extend to depths of about 8- to 10 feet These soils are in turn underlain by interbedded sandy clay and clayey sand to depths of about 18- to 20 feet A sandy clay aquitard appears to underlie the entire area and is interpreted to be continuous in the region The information collected in this study agrees with data previously collected Groundwater was encountered in each borehole at depths of about 13-feet in the interbedded sandy clay and sand strata Water appeared to be unconfined and entered the boreholes slowly Depth to groundwater measurements yielded an estimate of a northerly flow direction, under an estimated gradient of 0 032 Historic groundwater flow data indicates that the groundwater flow direction is northerly