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The water level and total depth measurements were used to calculate the required purge volumes <br /> for the monitor wells Additionally, prior to purging and sampling, a clear teflon bailer was <br /> lowered just to the top of the water column in each of the wells and retrieved for visual <br /> inspection to evaluate the presence of floating product on groundwater There was no indication <br /> of floating product in any of the wells The clear teflon bailer was then used to purge the well <br /> of approximately three casing volumes Monitor well purge data is summarized in Table A-2 <br /> TABLE A-2 <br /> Monitor Well Purge Data <br /> IJune 17 and 18, and July 2, 1993 <br /> Weil/Sample Total Depth Presence of Three Well Volumes Purged Volume <br /> (feet)' Floating Product (gallons) (gallons) <br /> MW-1 88 4 no 75 75 <br /> MW-2 89 7 no 8 3 28 CZ <br /> I MW-3 906 no 8 9 90 <br /> MW-4 1082 no 184 18 5 <br />' MW-5 1054 no 170 170 <br /> MW-6 1067 no 18 4 18 5 <br />' I Measured from top of PVC casing (TOC) <br /> 2 Due to the gravel removal and redevelopment disturbance to the well, additional purging was completed to <br /> assure a representative groundwater sample was collected <br /> At the beginning, during, and end of the purge process, measurements were taken for pH, <br /> , <br /> electrical conductivity, and temperature of the purge water The values measured at the end of <br /> the purge process are presented in Table A-3 <br /> TABLE A-3 <br />' Groundwater Parameter Values, (End of Purge) <br /> June 17 and 18, and July 2, 1993 <br /> Well/Sample pH Temperature (°F) Conductivity(umhos) <br /> MW-1 7 0' 687 1056 <br /> MW-2 7 35 73 9 1190 <br /> MW-3 701 74 8 1106 <br /> MW-4 7 0' 70 1 919 <br /> MW-5 701 750 1058 <br /> MW-6 7 0' 727 1033 <br />' 1 pH paper was used to determine pH due to faulty field instrument <br /> 1 <br /> MX\R T51AREG2QTR WP A - 2 os,u <br />