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33 \J The data in Table 3 also indicate that the water in Ennis Draw is of significantly better quality than that in the overburden and coal. In fact, the dissolved solid concentration of the overburden waters is greater than that of Ennis Draw by a factor of 6. In addition to determining the quality of ground waters in the leasehold, samples were collected from twenty-four additional wells in the general vicinity. The location and number of these wells are shown on the map in Appendix D. The temperature and electrical conductivity of the samp',es were measured. These data, together with other information supplied by the well owners, are presented in Table 4. It is difficult to draw any firm conclusions from the data on the wells in Table 4 because of insufficient knowledge of the depths, aquifers open to the well bore, and water levels. However, wells numbered H-1, W-2, W-3, W-5, W-6; W-l0 and W-24 which are all in the vicinity of the leasehold, are apparently completed in aquifers below the coal seam elevation. This is judged on the basis of the static water levels, length of pipe, and depth of hole. The total dissolved solids concen- tration (estimated from EC) is on the order of 750-1000 mg/1 in these wells. Information gathered from the city of Keensberg indicate that the dissolved solids concentration of the Foxhills waters is approximately 700 mg/1. This would strongly suggest that the above mentioned wells are completed in the Foxhills sandstone. Wells W-4, W-7. H-8, N-g, W-21, W-22 and W-23 are relatively shallow wells located in Ennis Draw. Judging from their depths, static water levels and/or dissolved solids concentration, we firmly believe that these wells withdraw water from the-stream sediments in the draw. However, it is possible that wells W-4 and 4-9 are being affected by waters in the s