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<br /> <br />• The 18.6 acre area immediately cast of the existing Spicer clay pit will be reserved for <br />additional process water settling ponds, while the remaining excavation will be backfillcd as <br />much as possible with natural Cincs from the gravel screening plan[. Gravel recovery is <br />estimated at 50%, and exhaustcd portions of the mining area will be backfillcd to <br />approximately 30 to 40 feet below original grade. Reclaimed pit slopes will be no steeper than <br />3Hto1 V. <br />The second pi[ will be developed along the northern edge oC the 1\4cKay lease and will <br />progress incrementally to the south in three lifts of approximately 20' each, similar to those <br />dcscril~ed above. Each southward increment will involve stripping overburden Crom an 8 - ]0 <br />acre p;trcel to expose additional reserves and placing this overburden on the slopes and bottom <br />of the mined-out portion of the pit. Then the newly-exposed section will be mined to ultimate <br />depth prior to stripping the next increment. A 25 - 30' setback will be maintained Crom <br />• property lines, but there will be zero setback from the existing Associated Aggregates pit <br />adjacent and to the east of the McKay lease. <br />Again, disturbed acreage is minimized by advancing all three lifts simultaneously, and <br />exhausted portions of the pit will be backfillcd to within 30 to 40 feet oC original grade with <br />reject material from the gravel screening plant. The overburden stockpile located at the <br />western edge oC the initial pit phase will be reserved for use in reclaiming the portion of the <br />Icase last mined. Additional reclamation details are discussed in Exhibit E. <br />Equipment for gravel mining may include, but is not limited to an excavator, front-end <br />loaders, bulldozers, scrapers, and haul trucks. The mine plan currently calls for excavating <br />sand and gravel during daylight hours Cive to six days per week from mid-March to mid- <br />December. The gravel processing plant will recover gravel at an average rate of 500,000 T/year <br />• of aggregate products until the deposit is exhaustcd many years in the Cuture. <br />2 <br />