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6.4.3 EXHIBIT C - Pre - mining and Mining Plan Map(s) of Affected Lands <br />1.) Please describe what "typical berm planting" means? Why do only certain berms <br />have "typical berm plantings" while others do not? <br />6.4.4 EXHIBIT D - Mining Plan <br />2.) Please specify the depth that topsoil will be stripped. <br />3.) On Page D -4 of the Exhibit, it states mining and reclamation activities will take <br />approximately 20 years. Please provide a more detailed schedule for the mining <br />activities. Please estimate the periods of time which will be required for each phase (1- <br />5) of the operation. The Division understands this schedule will be an estimate and will <br />vary depending on economic activities. <br />4.) What will be the maximum depth of the pit excavations for each phase? <br />5.) What seed mix will be used to stabilize the topsoil and overburden piles if they are <br />left in place for longer than 180 days as described on page D3 of the mining plan? <br />6.) The structures to be built in the plant site are depicted on the mining plan map with <br />their respective length and widths labeled. Please provide an estimate for the height <br />and composition of each of those structures (i.e. office, scale house, MCC building, <br />maintenance shop etc...). Also, if these structures will be built on concrete pads, what <br />will be the thickness of the pads? The Division needs this information to calculate a cost <br />for removing these structures for the Financial Warranty. <br />7.) Please provide an estimate of the thickness of the asphalt road constructed in the <br />plant area. <br />8.) According to Page D2 of the mining plan, it states dewatering water will be <br />discharged either into the Cache La Poudre River, the cottonwood gallery adjacent to <br />the river, and or wetlands adjacent to active mining areas. However, on the mining plan <br />map (4), there are several dewatering discharge points along Weld County Road 25; it is <br />unclear what the water will be discharging into. Please clarify. <br />6.4.5 EXHIBIT E — Reclamation Plan <br />9.) According to E -5, the Operator will spread 6 -12" of topsoil where it is required. <br />Given the reclamation plan calls for the creation of eight open water ponds and <br />sediment basin wetlands, there should be excess topsoil available for reclamation. <br />Please commit to spreading at least 10 -12" of topsoil over the designated areas. <br />