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. Two wells are listed as being owned by Sundance Coal Co. <br />Since these wells are within 100 feet of each other and drilled <br />to the same depth only one was sampled. The completion depth of <br />the wells is 5 to 10 feet below the water level of Raton Creek, <br />however, the piezometric surface in the well measured is slightly <br />above the creek level. Since the well is approximately 50 feet <br />east of the creek on a bluff this indicates that the well is re- <br />ceiving water from the semiconfined Trinidad sandstone rather <br />than unconfined alluvial valley fill. The water quality confirms <br />this, the conductivity of the well is slightly less than twice <br />that of Raton Creek and has a much greater sodium content. It is <br />entirely possible, however, that the well quality fluctuates sea- <br />sonally as water recharges or discharges between bedrock and the <br />creek. <br />Sundance Coal Company has recently purchased water rights <br />of the two wells from Sanders, Inc. for use in the coal processing. <br />• Measurement of water levels was not possible except in the <br />case of the Sundance Coal Company well. All other water depths <br />were obtained from the State Engineer's records. <br />Analytical results for the area water wells are presented in <br />Table 4. Three aquifers appear to be represented, as evidenced <br />by the differing chemical compositions. However, both the Daniels <br />and Sundance Coal wells are completed in the Trinidad Formation. <br />The difference in composition appears to be a result of dilution <br />from Surface water in the latter well. Total dissolved solids are <br />highest in the vermejo Formation water and lowest in the Sundance <br />Coal Company well. Trace metal concentrations are low in all <br />samples. <br />C~ <br />FISHER, HARDEN b FISHER <br />148 <br />