Laserfiche WebLink
<br />Greg Lewicki And Associates - <br />11541 Warrington Court Phone: (303) 346-5196 Fox (303)-346-6934 <br />Parker, CO USA 80138 E-Mail: infonlewicki.biz <br />December 20, 2007 <br />Steve Shuey <br />Division of Reclamation, Mining, and Safety DEC 2 0 <br />1313 Sherman St., Room 215 2007 <br />Denver, CO 80203 GRAND JUNCTION FIELD OFFICE <br />DIVISION OF <br />RECLAMATION MINING 11 SAFETY <br />Second Adequacy Review Response ,? <br />Tri County Gravel, Permit No. M-1977-265, Technical Revision No.2 <br />Dear Mr. Shuey: <br />In response to the additional adequacy review provided by your office for the second <br />technical revision of the Tri County Gravel 112 Construction Materials Permit the <br />following modification to the technical revision have been made: <br />2. Tri County Gravel commits to maintain flow in the irrigation ditch that runs <br />through the existing Phase V, and use it to water the wetlands present there. <br />7. An appropriate vegetation plan has been drawn up for Tri County Gravel, using <br />United Companies nearby Anderson Pit as a basis. <br />8. a) In order to insure maximum flexibility over the mine's life, a 30' wide spillway <br />has replaced the originally planned HDPE pipe used for discharge from the <br />sediment pond. The new Sediment Pond Discharge Detail shows the <br />specifications of the spillway. The reclamation of the sediment pond and <br />associated costs are included in the End of Mine Life Reclamation Cost Table <br />in the attached up dates. <br />b) The location of the pit pump has been updated to show it out of the pit. The <br />pump will sit above the pit with a suction hose reaching down into the pit. <br />c) The majority of the equipment is mobile, allowing it to be moved out of the pit <br />if there is a pump failure. Also, in the event of a pump failure, a replacement <br />pump can be installed within 24-hours and in 24-hours, only 4.8 inches of water <br />will be on the pit floor. <br />10. The 100-year, 24-hour FEMA floodplain has been added to Map C-1. <br />13. The irrigations nearest to the wetlands that lie between Phase 3 and the Gunnison <br />River will be excavated as mining progresses. During mining, this wetland area <br />will be watered via a small pit pump and water line. This will maintain the <br />wetlands until mining is complete, and dewatering ceases. <br />14. The Reclamation Plan Map has been up dated to include the correct labeling of <br />the lake discharge.