Laserfiche WebLink
when they are in the floodplain, be oriented parallel to the flow of water. These stockpiles will be <br />35-40 feet tall with maximum 1.5:1 (horizontal:vertical) side slopes. Stockpiles that will be in place <br />for more than 180 days will be seeded depending on the seeding "window" parameters for dryland <br />grass, which are typically between September and April. The Dryland Grass Seed Mix is listed on <br />page E3 of Exhibit E. The stockpiles will be broadcast seeded and incorporated into the weed <br />control program. Weed control consists of monthly inspections and, if necessary, chemical <br />treatments in the applicable fall and spring seasons. <br />Commodities to be Mined <br />The primary commodity to be mined will be aggregate. Lafarge will supply local, county, and state <br />governments, as well as private industry with aggregate from this facility. Some gold may be <br />discovered on site during the mining process. If gold is found it will be used for commercial <br />purposes. <br />Offsets <br />With the exception of a small wetland that was created by the property owner on the east edge of <br />the mining cell, Lafarge will stay out of wildlife and riparian vegetation areas along the Cache la <br />Poudre River. In addition, setback from existing structures will be maintained according to the <br />Geotechnical Slope Analysis included in the Stability Exhibit. The highwall of the mine was <br />setback a minimum of 100' from the bank of the Cache ]a Poudre River and at least 50' from all <br />existing manmade structures. Lafarge is proposing to mine through the small created wetland area <br />on the east edge of the mining cell because when dewatering occurs in conjunction with the mining <br />operation, it would be difficult to keep water in the wetland to support the wetland vegetation. <br />Therefore, Lafarge will be working with the Corps of Engineers regarding the regulatory <br />requirements related to the impact area. The details regarding any impacts will be worked out with <br />the Corps of Engineers prior to the commencement of mining. <br />Roads and Conveyors <br />All of the material will be transported from the mining face to the 35`h Avenue plant site for <br />processing via conveyors. The conveyor will leave the Iverson Mine cell at the southeast corner of <br />the Iverson property, cross the City of Greeley property on the north side of the Boyd and Freeman <br />Ditch then turn to head north along the east property boundary of the City of Greeley property. The <br />conveyor will cross the Poudre River Trail which is located on the City of Greeley property (per the <br />agreement with the City of Greeley, the conveyor will be elevated at least 14'6" over the trail) and <br />Great Western Railway of Colorado's railroad right of way. The railroad tracks where the conveyor <br />will cross are currently not being used by Great Western Railway of Colorado; therefore, Lafarge <br />has an agreement with Great Western Railway of Colorado to have an at-grade crossing for the <br />conveyor as well as for trucks. The conveyor bridge will be composed of steel; the footings are <br />anchored in concrete. Details for the conveyor bridge can be found on Exhibit C. Upon completion <br />of mining operations, the conveyors will be removed and all areas affected by the conveyors will be <br />revegetated. <br />All existing on-site roads are shown on Exhibit C, Pre-Mining Plan. Any existing gravel access <br />roads shared with ongoing oil and gas production on the perimeter of the mining cell will remain in <br />place once mining and reclamation are complete. The roads will be maintained by the operator to <br />provide required access to the various activities on the property. Existing roads are typically 12' to <br />Iverson Mine <br />DRMS 112 Reclamation Permit Application <br />.Page D3 of D4