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b. Construct stockpiles: <br /> i. Two each, on both sides of access road, 8 foot wide at the base with maximum <br /> 2H:1V sideslopes to a peak of about 2 feet above original grade, storing soil from <br /> road and part of storage/loading area approximately 160 feet length (each), <br /> storing about 100 CY. <br /> ii. One each on west side of Pit, 24 foot wide at the base with maximum 2H:1V <br /> sideslopes to a peak of approximately 6 feet above original grade, storing <br /> approximately 500 CY per 100 linear feet, or 120 feet of berm (stockpile) per acre. <br /> c. Protect soil by compacting to not more than 70% modified Proctor density(using field <br /> estimation) and temporary seeding for stabilization: Broadcast seeding rates: <br /> i. Slender wheatgrass (var. Pryor) 8.25 lb/acre <br /> ii. Sanfoin (var. Remont) 12.50 lb/acre <br /> iii. Annual rye (nurse crop) 1.50 lb/acre' <br /> d. Seed immediately after application of erosion control polymers (if any), usually within seven <br /> days of completion of a stockpile or section, and may be followed by watering to establish the <br /> stand (if available). Use standard weed control for the crop, in coordination with landowner and <br /> County. <br /> 6. Overburden,waste rock, and deposit characteristics(6.3.3.(c) & (d)): Little or no overburden is <br /> anticipated, and all rock will be excavated and used as pitrun or product:fines either screened or <br /> washed out and able to be sold will be used as backfill to further flatten final slopes. Depth of the <br /> alluvial/glacial till being mined is deeper than planned 15-20 foot maximum depth of proposed <br /> excavation. <br /> 7. Components not already addressed (6.3.3.(e)): fencing will be standard 3-strand barbed wire or <br /> electrical fencing to keep livestock out of pit. In addition to gate on access road, one or more other <br /> gates may be provided on the west, north, or south fence for convenience of the landowner, but the <br /> only access route will be to Taylor Lane. No temporary or permanent buildings: scale may have a <br /> scalehouse (portable/mobile). No shop or maintenance buildings. Minimum maintenance to be <br /> done on-site out of trailers/containers. See above for processing plant information. <br /> 8. Dimensions of disturbances (6.3.3.(f)): See on Exhibit E—map. No buffer zone is planned except for <br /> the 25-30 foot strip on the west edge of the permit area (used for soil stockpile). <br /> 9. Roads(6.3.3.(g)): No changes proposed for existing roads, as discussed with County. Access road to <br /> be constructed to County standards, 25 feet wide, 200 feet long,with 25-foot radii on intersection. If <br /> required,Taylor Lane bar ditch culvert will be at least 15-inch diameter,and culvert for irrigation <br /> ditch will be at least 24-inch diameter(corrugated metal pipe). <br /> 10. Water use (6.3.3.(h)): Use water for dust control (traffic areas, crushing and screening)and <br /> potentially washing of product if required by customers. Pitrun material is expected to be moist to <br /> wet when excavated and processed, and water consumption is estimated at 5 gallons per ton of <br /> production, or 37.5 acre-feet over 7 to 10 years(3.75 to 5.36 acre-feet per year), including pitrun <br /> moisture content and assuming recirculation of water used for washing material.This is equal to <br /> 0.375-0.536 acre-feet water per acre per year(4-7 inches). <br /> 11. Water source (6.3.3.(h)): Water will be obtained from irrigation water rights owned by the <br /> landowner,through a temporary substitute water supply plan, and from precipitation on the permit <br /> area.The water will be obtained from the irrigation ditch on the east edge of the permit area, and <br /> the retention basin in the southwest corner. <br /> 1 Seed available from Southwest Seed, Cortez,CO. <br /> Toner Ranch Pit 110c Application Exhibits Page 7 of 20 <br />