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WATER INFORMATION <br />1. Surface Water General Discussion <br />EXHIBIT G <br />Tomichi Creek is approximately 110 feet south of the permit boundary at the closest point. The <br />FEMA 100 year flood plain can be seen on Maps C -1, C -2, and F. Stage 1 mining will not take <br />place within the flood plain, but a portion of Stage 2 will occur in the floodplain. Processing <br />operations will not be located within the floodplain at any point in the mine life. <br />Mining within Stage 2 will involve only the excavation of sand and gravel for transport to the <br />processing area. <br />The closest edge of Tomichi Creek is roughly 250 feet from the edge of the east sediment pond, <br />and 300 feet from the nearest edge of the pit. An old railroad grade runs between pit and Tomichi <br />Creek. In accordance with Gunnison County rules, the operation maintains a 100 foot setback <br />from all water bodies. <br />During most of the mine life at Tomichi Pit, the natural drainage of the site will be maintained. <br />Once an area is stripped of its topsoil, it will drain to the mine pit. This includes the office area. <br />The post -mine drainage of the site will be similar to the pre -mine, with the change of the lakes <br />containing a large amount of the site runoff. The runoff calculations for the two drainage areas of <br />the site can be seen below, along with comparisons of the pits' capacity. <br />Tomichi Pit, December 2013 G -1 <br />