REV14550 - Laserfiche WebLink

Home Browse Search

-6- Kerr Coal Company is required to submit a plan to this Division no later than September 30, 1981, for minimizing the depletion of water from Sudduth Draw caused by ground water in flows discharging into Pit No. 3. Any measures which the Division determines to be necessary to alleviate this potential problem shall be implemented prior to mining adjacent to Sudduth Draw. This stipulation has been resolved. Water quality information was requested by the Division from the spring at the old Sudduth Mine. The analyses provided actual water quality from an area disturbed by mining, and allowed more accurate predictions to be made of the impacts of the proposed mining. The following stipulation was attached to the initial permit: Kerr Coal is directed to monitor water quality from the spring at the Old Sudduth Mine quarterly for one year, according to the same parameters as other hydrologic monitoring. Results are to be submitted to this Division. This stipulation has been resolved. The operation is in compliance with the requirements of this section. VII. Probable Hydrologic Consequences of Mining Rule 2.05.6(3) This assessment of the probable hydrologic consequences of mining at the Marr Strip Mine is based upon the permit application, the original Findings Document (issued January 12, 1981), and upon annual hydrologic report submittals. All baseline hydrologic and geologic data which is summarized in this assessment has been obtained from the permittee. For further hydrologic and geologic information, see the permit application, and Sections IV, V, and VI of this document. All of the effects identified are assumed to be short-term. However, the applicant is continuing to monitor surface and ground water to verify the analysis of probable hydrologic impacts. Future reviews will reassess the cumulative hydrologic effects in this area using improved techniques, additional baseline data, new research, and the results of surface and ground water monitoring programs. Anticipated coal mining in the general area includes the existing and proposed Kerr surface mining operations as identified in the original permit application, and the existing Wyoming Fuels mine. Calculations assume worst case conditions; the drainages are analyzed as if all the proposed disturbances would occur simultaneously. Under actual conditions, mining would be phased, and as a result, the actual effects are less. Additionally, Wyoming Fuels' Canadian Strip Mine is currently not active, and will most likely be completely reclaimed in the near future. Therefore, the effects to ground water from dewatering the Canadian Pit are not taken into account.