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• Groundwater Uses. <br />Only one registered well lies in the Bolton Draw Drainage. <br />This well, belonging to Kerr Coal Co., is located in the SE: of <br />Section 35, T9N, R78W. Filed under Permit No. 02053-F, the well <br />has an assigned appropriation of 3 ac ft/yr and a maximum pumping <br />rate of 15 gpm. Water from the well is used for sanitation at <br />the Kerr Mine. <br />Wyoming Fuel Company has received approval to install a well <br />in the SW~SW; of Section 2, TBN, R78W. This well will also be used <br />for sanitation at the Canadian Strip Mine. Permission to drill this <br />well was granted by the Colorado Division of Water Resources under <br />Permit No. 117184. This well has been assigned an appropriation of <br />4 ac ft/yr with a maximum pumping rate of 15 gpm. <br />Groundwater Quality. <br />• The results of the groundwater quality as analyzed from monitor <br />wells in the Pit 2 area as well as in the reclaimed spoil area are <br />found at the end of this Appendix. These analyses indicate that <br />the prevalent type of groundwater found within the strata to be <br />mined is of sodium bicarbonate type. This is true for all wells <br />except Well 4C which is of sodium hydroxide type. Large percentages <br />of sodium sulfate type water also exist in Wells 4A, 6C and in Well <br />7. The water in Well 7 is about half sodium bicarbonate and half <br />sodium sulfate. This well is a good indicator of the resultant <br />groundwater chemistry that is likely to be found in the reclaimed <br />spoil areas. <br />The high sodium concentrations in the groundwater are most <br />likely directly tied to the high sodium levels exhibited by the <br />overburden and underburden. As with the SAR values in the overburden <br />and underburden, the groundwater quality with respect to sodium is <br />greatest in the vicinity of the nose of the anticline and decreases <br />• northward on both flanks. <br />-68- <br />