Laserfiche WebLink
Mine Phasin¢ <br />Aggregate Industries anticipates mining and reclaiming the Wattenberg Lakes site in <br />approximately 11 yeazs. However, the rate of mining and overall life of the mine is dependent <br />on several factors including product demand. <br />Since approximately 245 acres will eventually be mined on the site, mining in phases will limit <br />the area of disturbance at any one time {see the Pre-MiningfMining Plan Map, Exhibit C). The <br />Wattenberg Lakes site will be mined in three phases, with each of the phases being directly <br />related to six mining areas. The mining azeas and phasing have been established for on-site <br />wetland mitigation and, therefore, may change slightly during mining to fulfill mitigation <br />requirements. The following is the anticipated acreage and status of each mining yeaz: <br />Mining <br />Phase Mining <br />Areas(s Area <br />(acres Time for Mining <br />ears <br /> <br />I Pond 2, MA 3, <br />and MA 2 <br />59 <br />1.5 <br />II Pond 1, MA 1 44 2.0 <br />III Pond 3 142 7.5 <br />TOTAL 245 11 <br />During the initial phases of mining, a majority of the Huett Ditch will be relocated fiuther to the <br />east of its present location. The ditch will be relocated to an area between mining area 1 and the <br />South Platte River. Approximately 750 feet of the southern portion of the ditch will not be <br />disturbed. <br />In Phase I of the Mining Plan, Pond 2 and mining areas 2 and 3 will be mined. As mining <br />progresses in Phase I, the Huett Ditch will be relocated and the wetlands within the existing ditch <br />will be removed and planted in the relocated ditch. During Phase I, the side slopes in Pond 2 <br />will be created and stripped overburden will be placed back in the mined out portions of mining <br />areas 2 and 3. It is anticipated that the Pond 2 reservoir and wetland mitigation in mining area 2 <br />will be completed by the end of Phase I. <br />Phase I will also include construction of the reservoir slurry walls for Pond 2 and Pond 1. It is <br />anficipated that, as Phase II begins, construction of the slurry wall for Pond 3 will be started. <br />During Phase II, Pond 1 will be mined along with mining azea 1. During this phase, the side <br />slopes in Pond 1 will be created and backfilling and wetland mitigation in mining azeas 2 and 3 <br />will be completed. During the excavation of mining azea 1, dewatering operations may affect <br />flows in the new relocated Huett Ditch. If necessary, groundwater from dewatering the pit will <br />be used to supplement flows in the relocated ditch. Overburden material stripped from the <br />Phase II mining areas not used for backfilling mining areas 2 and 3 will be placed back in mining <br />azea 1. As Phase II ends, it is anticipated that the Pond 1 reservoir and wetland mitigation in <br />mining area 3 will be complete. Additionally, the majority of backfilling for mining area 1 will <br />also be complete. <br />Wat[enberg Lakes <br />DMG //1 Permit <br />Page 5 <br />