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EXHIBIT C - MINING PLAN <br />1. General Plan <br />Gravel will be excavated from the Soderquist site to a maximum depth of '53 feet. There is no <br />overburden on site, and topsoil is found at no greater a depth than 12 inches. Front end loaders will <br />perform most of the mining and place the material into mining trucks or directly into a mobile crusher. <br />Mining has taken place primarily on the eastern portion of this site up to the end of 2009. With the swap <br />of undisturbed areas as part of this amendment, future mining is expected to proceed to the west. <br />A stockpile area will be utilized, as shown on Map C-2. <br />No blasting will take place at Soderquist. <br />2. Water Information, Rights and Augmentation <br />No water rights or augmentation will be necessary since no consumptive use will occur during mining. <br />The extremely low production does not warrant watering of material or roads. <br />3. Drainage Facilities and Hydrologic Impacts <br />Ground water is not expected to be contacted during mining. If ground water is exposed, Montrose <br />County will backfill the exposed ground water hole and maintain all further mining at two feet above the <br />elevation at which ground water was exposed. <br />Surface water will be both contained on site and diverted around the site. A small (2.5' deep, triangular <br />shaped) diversion ditch will be placed along the west and south sides of the pit up hill of the mining <br />operation. This will prevent surface water from the surrounding area from entering the pit during a <br />storm. The diversion ditch will pass through a 36" culvert to be installed immediately underneath the <br />access road just in side the permit boundary. Precipitation that falls in the pit itself will gather at the <br />sump shown on Map C-2 and evaporate or infiltrate into the local ground. A berm will be built along the <br />east side of the pit during mining to contain storm water that falls on site. This berm will be four feet tall <br />with a maximum of 21-1: IV side slopes, except at the road crossing where it will have 5H:1 V slopes. <br />Soderquist Pit March 10 9