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Construction, Inc. <br /> 1850 E. I". Street, Craig, CO 81625 <br /> Phone & Fax (970) 824-2709 <br /> WagnerCorp@q.com <br /> q.com <br /> c) Dry pit mining methods are used for extraction. No water will be used for mining. <br /> The excavation site is located at the highest point of a rock ledge and is <br /> considered a dry basalt operation at an expected depth of sixty (60) feet. Site <br /> surveys and existing excavations do not indicate the presence of ground water <br /> within the permit boundaries. If ground water is encountered backfill will be <br /> installed 2 feet above the encountered level and the office of the state engineer <br /> and the Division will be notified. <br /> d) No runoff, impoundment, or groundwater can affect the excavation or affect the <br /> hydrologic balance, pre or post mine. Measures will be taken to minimize <br /> disturbance to the hydrologic balance. No fuels or other hazardous products will <br /> be stored on site. <br /> A perimeter ditch is located along the south permit boundary that directs runoff to <br /> two small impoundment sediment containment features. <br /> The pit self contains all runoffs and no runoff or ground water can affect <br /> hydrologic balance pre or post mining. <br /> e) Permit area is being increased to 27.91 acres to provide additional acreage for <br /> material stockpiling, equipment storage, with 17 acres as the maximum amount <br /> disturbed within the permit area at any given time. Mining operations will be <br /> ongoing with no phases. <br /> f) Future mining is not anticipated to increase to more than 17 acres over a 20 year <br /> period. Mining operations over the last 16 years have resulted in the excavation of <br /> four(4) acres with a maximum .25 acre per year pit growth. Current 4+/_acre pit <br /> floor will be excavated until a 60ft depth is reached. Mining will then extend to <br /> the north until northern limits of excavation (60ft) are attained resulting in the <br /> daylighting of the northern slope. Current access roads will be maintained and the <br /> only portable structure will remain in place for the permit life. <br /> g) The general post-mined area will be leveled and graded with the existing rock in- <br /> situ to accommodate anticipated construction and agricultural building activities. <br /> 2:1 slope construction occurs during the mining process. <br /> All materials with exception to topsoil are market products therefore overburden <br /> is not considered in this permit. <br /> No waste material is anticipated as all primary product will be extracted and <br /> removed from the site. <br /> The mined deposit is basalt with a thickness and depth that extends beyond the <br /> 60ft depth. The 60ft depth includes 4-6 inches of existing topsoil and mined <br /> material. <br /> The nature of the stratum immediately beneath the material to be mined remains <br /> basalt to an indeterminate depth. <br />