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identify and characterize the aquifer to be mined in or through. The Division also requests that the applicant define or predict the cone of depression expected for any areas to be dewatered and dry mined during the life of the operation. The cone of depression assessment should define, at a minimum, the horizontal and vertical extent of drawdown expected. If during the assessmeht, the applicant determines that a drawdown will occur offsite that may impact a current groundwater user, the applicant should explain any mitigation measures to be implemented and trigger points that would put mitigation measures into effect. 7. The operator has yet to address this concern noted in the Division's Mazch 13, 2006 letter. Please address accordingly; It appears that the Pazker/Dersham site is within the 100-year floodplain of the South Platte River. Please provide the flood elevations(s) to be expected under a "worst case" flooding scenario and specific mitigation measures that will be implemented to minimize the potential for any offsite impacts. Legible copies of the Flood Insurance Rate Maps ("F1ItM") through the mine reach would facilitate the Division's review. 8. The operator has yet to address this concern noted in the Division's Mazch 13, 2006 letter. Please address accordingly; Please explain how water from dewatering of the Parker/Dersham site will be managed to protect against pollution of surface of groundwater both during and after the mining operation (Rule 6.4.7(2)(c))• Because objections were filed with the Division, this matter must be set for a hearing before the Mined Land Reclamation Board (NLRB). The tentative date for the hearing is June 14-15, 2006. However, the Division will need to make a recommendation by May 12, 2006. Please be advised that Parker/Dersham Resource application may be deemed inadequate, and the application may be recommended for denial on May 12, 2006 unless the above mentioned adequacy review items are addressed to the satisfaction of the Division. If you feel more time is needed to complete your reply, the Division can grant an extension to the decision date. This will be done upon receipt of a written waiver of your right to a decision by May 12, 2006 and request for additional time (including a date for consideration before the NLRB). This must be received no later than the deadline date. If you have any questions, please do not hesitate to call. nicer y, ~/ l~i~Z{~ Erica Crosby Environmental Protection Specialist cc: Carl Mount; DMG Danna Ortiz; Civil Resources, LLC. w/ enclosures