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i <br />Table A-15. A straight line fit of the drawdown vs. time on a semi-log plot is <br />shown in Figure A-17. The straight line fit of [he data yields a transmissivity <br />value of 10 gal/day/ft and a permeability of 0.13 ft/day. These values represent <br />the transmissivity and permeability of the I seam near well GF-4. <br />A-2.13 GF-S TEST <br />Backfill well GF-5 was pump tested on September 18, 1985. Water level and <br />discharge rate were monitored during the 60 minutes of pumping. Well GF-5 is a good <br />producer and a discharge rate of 8.6 was maintained throughout the test. Aquifer- <br />test data for well GF-5 is presented in Table A-16. <br />Figure A-18 presents drawdowns versus time on a semi-log plot for well GF-5. <br />i The drawdown data gives a good straight line fit. Using Jacob's method to analyze <br />the drawdown data yields a transmissivity value of 410 gal/day/ft for the backfill <br />aquifer near well GF-5. This value is thought to accurately represent the <br />transmitting ability of the backfill aquifer around well GF-5. Jacob's method will <br />be discussed in Section A-3.0, Par[ A of Appendix V. <br />A-2.14 GF-6 TEST <br />Table A-17 presents data collected from the single well pump test conducted on <br />September 9, 1986 on well GF-6. A total of 90 feet of drawdown was obtained with a <br />discharge of 7.8 gpm. <br /> Using the late-time portion of [he drawdown curve shown plotted in Figure <br />~~ A-19, a transmissivity of 12 gal/day/ft for the R seam aquifer near well CF-6 can be <br />A-9 ~l~B~~~ FEo 13 '$7 <br />