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13 <br />of. observing drawdown during pumping tests. The typical construction of ' <br />these wells is shown in Figure 6. <br />Wells with 5-inch diameter completed in the overburden are numbered . <br />9G, 117, 122, 133, 163 and 172. Wells numbered 118, 119, 173 and 174 are <br />2-inch diameter wells completed in the overburden as drawdown observation <br />wells. Typical well construction.of the 5-inch and 2-inch wells completed , <br />in the overburden is shown in Figures 7 and 8. Well number 97 is completed <br />in both the overburden and the coal as shown in Figure 9. Schematic <br />drawings of the remaining wells are contained in Appendix A. <br />Seven separate determinations of the transmissivity of the overburden <br />were made. The wells involved in these determinations were 172, 122, 117, <br />118 and 119. Two determinations of the storage coefficient were made by <br />measuring the drawdown in wells l18 and 119 in response to pumping from ,. <br />well 117. Similarly, eight determinations of the transmissivity of the • <br />coal seam were made by running various tests on wells 137, 116, 61, 62, <br />and 60. Two values of the storage coefficient in the coal seam were <br />estimated from drawdown data in wells 60 and 62 in response to pumping <br />from well 61. The results of these tests are summarized in Table 1. <br />Details of the computations are presented in Appendix 6 and the raw data <br />in Appendix C. <br />C~ <br />