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any filtrate water will be sent back to the mill for reuse and the tailings filter cake with a target moisture <br /> content of 15%will be conveyed to a temporary stockpile on a concrete pad immediately outside the <br /> mille building. <br /> Tailings will be hauled by truck to the FTSF. Tailings that meet the moisture content target will be placed <br /> in the Shell Placement Area in 12 inch lifts. Tailings that do not meet the moisture content target due to <br /> inclement weather or upset conditions at the plant will be placed in the General Placement Area target <br /> moisture content is met. Tailings will be stacked at an overall slope of 3H:1V. <br /> The FTSF will be monitored for compaction, moisture content and large scale integrity testing. <br /> Compaction assessment will be performed once every two weeks to insure tailings are stacked to <br /> required density. Grab samples will be taken from placed tailings and tested for moisture content twice <br /> per week. Overall integrity of the FTSF will be assessed by the cone penetration test every three years. <br /> Stormwater diversion channels will be constructed upgradient of the FTSF to divert clean water away <br /> from the FTSF. Low seepage rates are anticipated in the compacted filtered tailings stack but an <br /> underdrain will be constructed in case seepage occurs. The underdrain will convey seepage and any <br /> surface runoff from the dry stack to the geomembrane lined contact water pond. Water collected in the <br /> contact water pond will be tested for pH to verify it meets discharge criteria. The water will be returned <br /> to the mill, allowed to evaporated or released. <br /> The combination of dry stack tailings, stormwater diversion channels,the geomembrane lined contact <br /> water pond, stack monitoring and the semi-arid climate of the area will contribute to achieving a FTSF <br /> that will be inert and not susceptible to oxidation over time. <br /> 6.4.21(1)(c)(iv)The EPP for Waste Rock <br /> Waste rock, primarily granite, will be temporarily stockpiled during initial underground mine <br /> development in the north end of the footprint of the FTSF. This rock will be readily available during site <br /> development. Waste rock will be used to construct the FTSF embankment and mill structure foundation <br /> construction. <br /> In the event PAG and NAG waste rock is encountered, it will be stockpiled separately in the FTSF <br /> footprint and managed to prevent comingling. Water collection channels around the perimeter of these <br /> stockpiles will divert water runoff to the contact water pond. <br /> All temporary waste rock piles will be constructed in 5 ft lifts to a maximum height of 15 ft. above <br /> ground surface. Approximately 30,000 tons will be generated during the first year of site development <br /> with a maximum of 50,000 tons will be total produced by year 3. After the ramp is fully constructed and <br /> the mine is operating, waste rock will remain underground being used for backfilling. <br /> 6.4.21(2) Maps <br /> Exhibit C and Appendix C contain site development and mill figures. <br /> 6.4.21(3) Identification of Jurisdictional Agencies <br /> Colorado Department of Public Health and Environment (CDPHE)'s Water Quality Control Division <br /> (WQCD) and Air Pollution Control Division (APCD)will require permits. <br /> Fremont County Department of Transportation (FCDOT) will require an access permit. <br /> 68 <br />