Laserfiche WebLink
2019 Plan of Operations Modification American Gypsum Company, LLC <br /> TABLE 1.3: PROPOSED SURFACE DISTURBANCE SUMMARY <br /> Facility Operational Disturbance •. Disturbance <br /> New Disturbance-BLM Permitted 121 Proposed Total Permitted 0 Proposed Total <br /> (New) (New) <br /> Upper Pit Expansion 43.7 10.0 53.7 47.2 11.6 58.8 <br /> East Pit 0.5 82.1 82.6 0.6 85.3 85.9 <br /> Upper Pit 6900 Access Road Modification [3] 1.0 0.2 1.2 1.1 0.2 1.3 <br /> East Pit Access Road 1.0 0.2 1.2 2.1 0.1 2.2 <br /> Growth Medium Stockpile 1.1 1.1 2.2 1.1 1.1 2.2 <br /> Total 47.3 93.6 140.9 52.1 98.3 150.4 <br /> GRAND TOTAL 254 98.3 352.3 <br /> Notes: N Overlapping areas between pits, roads, and stockpiles were typically accounted for in pit and stockpile <br /> areas. <br /> I21 Permitted disturbance includes disturbance areas within permit approvals(see Table 1.4)that will be <br /> disturbed as part of the proposed Modification. <br /> [31 Upper Pit Access Road Modification only includes changes to the Upper Pit 6900 Access Road(BLM, <br /> 2019 and CO DRMS,2019a). <br /> Approximately 37.4 acres of proposed disturbance is within the 99.2-acre proposed mine permit <br /> area shown in purple on Drawing 04. Approximately 60.9 acres of proposed new disturbance is <br /> within the approved 830.2-acre mine permit area shown in red on Drawing 04. The remaining <br /> 52.1 acres of proposed disturbance is within previously permitted disturbance areas within the <br /> 830.2-acre mine permit area. <br /> 1.2 Type of Mining <br /> This is a surface gypsum mining operation. There are no underground components to the <br /> proposed mining activities. All gypsum mined from the open pits is processed off-site at the <br /> wallboard (drywall) manufacturing plant located south of the mine site on private land within the <br /> town of Gypsum, Colorado. <br /> The proposed Upper Pit expansion and East Pit development would be a continuation of current <br /> mining operations, providing gypsum to American Gypsum's wallboard manufacturing plant at <br /> approximately 500,000 tons per year(tpy), with a maximum estimated rate of 600,000 tpy. <br /> New proposed disturbance areas include the Upper Pit expansion to the south of the permitted <br /> disturbance limits, the East Pit area, and a small area between the pits for an access road to the <br /> East Pit. Drawing 03 shows new disturbance areas with respect to land ownership and <br /> Drawing 04 shows new disturbance areas by type (road or pit). <br /> Am Gypsum Poo Mod ISSD 20190909 September 2019 [51 <br />