Laserfiche WebLink
Knight Piesold <br />GONSYLT~NG <br />American Gypsum Mine <br />1 Gypsum, Colorado <br />Sediment Dam 5 Relocation <br />Design Report <br />' 1.Olnfroduction <br />American Gypsum Mine is located in Gypsum, Eagle County, Colorado. In September of 2003, <br />a new haul road and associated sediment control structures accessing the east pit were designed <br />' and approved by the Colorado Division of Minerals and Geology (CDMG). American Gypsum <br />Company (American Gypsum) has proposed relocating one of the previously approved sediment <br />dams, dam P5, approximately 1,100 feet downstream from the original location. The <br />construction of an access maintenance road will also be required for the construction of the <br />sediment dam. The approximate coordinates of the relocated pond are N13,875 and E16,475. <br />The sediment dam must be capable of adequately routing the water associated with the 100-year/ <br />24-hour storm event of 2.8 inches. The access maintenance road will be routed to the site from <br />existing sediment dam P4. <br /> <br /> <br /> <br /> <br /> <br /> <br />I <br /> <br />G:\101100100.02WtReporis\KP\Design RepoM1COC 1 January 3p, 2006 <br />