Laserfiche WebLink
1 <br />' The water level measurements were also used to calculate the required purge volumes for the <br /> monitor wells. From these measurements the standing water volume within the well casing was <br /> calculated to determine the necessary purge volume of three times the casing volume. A clean <br /> PVC bailer was then lowered into the well A minimum of three casing volumes was removed <br /> from each well pnor to sampling Monitor well purge data is summarized in Table A-2 <br /> 1 TABLE A-2 <br /> Monitor Well Purge Data <br />' October 7, 1993 <br />' Well/Sample Total Depth Depth to Water 3 Purge Volumes Purge Volume <br /> (feet)' (feet, BGS) (gal) (gal) <br /> MW-4 6452 5041 275 275 <br />' MW-5 6266 4862 274 28 <br /> MW-6 5900 4958 184 185 <br />' MW-7 6508 51 42 266 27 <br /> MW-8 6525 51 93 1 259 126 <br />' 1 Measured from top of PVC casing (TOC) <br /> At the beginning, during and end of the purge process, measurements were taken for pH, <br /> electrical conductivity and temperature of the purge water This information was also recorded <br /> on field water sampling data sheets and final values are presented in Table A-3. Upon <br /> completion of the purge, the pump assembly was removed from the well to allow sampling with <br />' a bailer <br />' TABLE A-3 <br /> Field Water Quality Measurements <br /> End of Purge Values <br />' October 7, 1993 <br /> Well/Sample pH Temperature ff) Conductivity (umhos) <br />' MW-4 767 701 1,074 <br />' MW-5 751 708 670 <br /> MW-6 672 721 1,464 <br /> MW-7 6 88 697 923 <br />' MW-8 7 18 707 11059 <br />' sr apTswc-rH WP A - 2 10114M <br />