Laserfiche WebLink
<br />Energy Fuels has mined the Dirty Jack O'Lantern Coal Seam about 380 feet <br />beneath the abandoned Rex Carbon Mine below the Thompson We11. This area <br />has also been mined under prior permits. The Thompson Well has already <br />been affected by historic mining in the Rex Carbon and Dirty Jack Coal <br />Seams. The Thompson Well at this time is not serviceable for production <br />or monitoring of groundwater. The operator is not predicting any <br />additional impacts to this well from their operation due to their <br />location below the well and intervening competent sandstones. <br />The original Findings included a stipulation (No. 5) requiring that the <br />operator monitor water levels in the Thompson Well. Because of the <br />information outlined above, this stipulation is no longer considered <br />necessary. <br />However, Energy Fuels has agreed to comply with Colorado Water Law if an <br />injury from their operation should occur to a valid active water right <br />holder. A series of mine dewatering wells have been installed to dewater <br />old underground workings overlying the Southfield No. 1 Mine. The <br />dewatering system was used to reduce the potential for mine inflows <br />induced by the overlying workings. The operator does not have any <br />immediate plans to dewater additional workings. However, it is possible <br />that additional workings above the mine could be encountered that would <br />need to be dewatered. Such dewatering would need to be approved by the <br />Division prior to implementation and meet applicable State and Federal <br />water quality standards. <br />Mining will create a drawdown of the piezometric surface in and around <br />the mine. Following the cessation of mining, the underground workings <br />will be filled with water and the piezometric surface should recover <br />tavard its original position. Historic records for the area confirm that <br />mines at the same depth as the Southfield Mine do fill with water after <br />the mines are abandoned. To assess the current and future effects of <br />mining on the hydrologic balance, the following stipulation continues to <br />be in effect: <br />Stipulation No. 6 <br />THE APPLICANT WILL SUBMIT TO THE DIVISION AN ANNUAL REPORT OF INFLOWS, <br />DISCHARGES AND CONSUMPTION OF WATER WITHIN THE MINE. THIS REPORT IS TO <br />INCLUDE A MINE WORKINGS MAP SHOWING THE LOCATION AND QUANTITY OF INFLOWS; <br />A TABLE KEYED TO THE MINE MAP WHICH SHALL CONTAIN THE SOURCE <br />(I.E., FAULT, FRACTURES, ETC.), QUANTITY, DURATION AND QUALITY (I.E., pH, <br />ELECTRO-CONDUCTIVITY AND TEMPERATURE) OF ALL INFLOWS; A TABLE CONTAINING <br />RECORDS OF WATER DISCHARGED FROM THE MINE, CONSUMED IN THE MINE AND <br />IMPORTED FOR USE WITHIN THE MINE; AND A DISCUSSION OF WATER BALANCE <br />WITHIN THE MINE. THE INFLOW STUDY IS TO BE DONE DURING THE SPRING OF <br />EACH YEAR WITH THE REPORT SUBMITTED BY JULY 1. <br />The language of Stipulation No. 7, pertaining to collection and reporting <br />of hydrologic monitoring data, has been incorporated into pages 2.05.6-52 <br />through 2.05.6-54 of the application, and is considered satisfied. <br />-13- <br />