Laserfiche WebLink
ditch relocations or construction of isolation berms. Slopes in the area of drainages will be <br /> maintained at or shallower than 2H:IV. This is in accordance with the Storm Water Discharge <br /> permit. Additional calculations for the storm water/sediment settling pond is presented in <br /> Exhibit G- Water Information. <br /> 4. Topsoil and Overburden Handling <br /> Topsoil ranges from 0 to 5 inches thick on site, 2.5 inches is the anticipated average. A <br /> maximum or average of 2 feet of overburden can be found on site. Both topsoil and overburden <br /> are used on site for reclamation of mined out areas. In the event that the King Pit needs to store <br /> topsoil, overburden, or waste fines in a berm, material piles will be either within the foot print of <br /> the current pit or along the western perimeter of the site. Topsoil stockpiles will be constructed to <br /> 2H:1 V slopes and overburden piles will have 0.5H:1 V slopes; all stockpiles heights will be < 10 <br /> feet. To prevent erosion of stockpiles, within 180 days of establishment piles will be seeded with <br /> yellow sweet clover <br /> The anticipated topsoil to be removed and stockpiled in undisturbed future mining areas amounts <br /> to 84,200 CY. Partially vegetated berms of overburden and waste fines exists for Alamosa <br /> County in the southern extent of the site as well as a large north-south trending berm along the <br /> western extent of the site. These berms collectively contain 633,400 CY. Alamosa County <br /> reserves total 22,400 CY while overburden and waste fines to be used during reclamation total <br /> 611,000 CY. The anticipated overburden in all unmined areas to be removed and stockpiled <br /> totals to 809,600 CY. These are estimates based on the soils report and existing operations as of <br /> November 2017. <br /> 5. Schedule of Operations <br /> Mining operations will occur Monday through Saturday during daylight hours and intermittently <br /> during the life of the operation. Mining, screening and processing will be conducted with <br /> portable equipment at various times of the year. Product will be sold throughout the year, <br /> although little is expected to be sold in winter months. Night gravel mining will not occur; <br /> although minor truck activity or repairs may occur after daylight hours. Mining and processing <br /> will take place no more than 12 hours per day, during daylight hours, Monday through Saturday. <br /> Hauling will take place from 7 am to 7 pm Monday through Saturday. <br /> King Pit creg i cwicki a«f Asaociat� PIRA' <br /> February 2018 D-6 <br />