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1 nrt'rtcJc r( 1_ittrit� cl Irrrl�rt� r 110 0percat,,rt L kItihits <br /> kc,hin, Rock Pit - Robin, Cntt.�trrrc'ttcur, LI.LI' <br /> b) Man-made structures within 200 feet of the affected area <br /> The following man-made structured are located within 200 feet of the permit boundary, and <br /> can be seen in more detail on the maps provided in Exhibit E. <br /> • Center Pivot Sprinkler: This sprinkler is roughly 70 feet from the southeast corner of <br /> the permit boundary, and roughly 600 feet from the extend of mining excavation <br /> operations. The sprinkler serves the field south of the permit boundary. <br /> • Gravel Road: A 10-20ft wide gravel road from Conejos County Road H to the permit <br /> boundary is located at the base of the mesa along the edge of the circular alfalfa field. <br /> • Irrigation Ditch (Abandoned): The Las Mesitas Ditch is located along the gravel road, <br /> and has been abandoned for nearly four years. <br /> c) Water Resources <br /> There is an existing exempt commercial well on the property and it draws water from the <br /> unconfined aquifer at a depth of 40 feet. The well is 100 feet deep. Groundwater is not <br /> expected for more than 20 feet from the lowest point in the area to be permitted. Robins Rock <br /> Pit will not affect either surface water or groundwater systems, since the bottom of the pit <br /> will be significantly above both the Conejos River and the static water level in the exempt <br /> commercial well drilled on the property. It is expected that approximately 1 ac-foot per year <br /> will be used for reclamation purposes and minimal amounts will be used for dust control. <br /> Runoff from storms and snow melt will be contained within the pit and the pit will be graded <br /> in such a way as to always be lower than the adjacent property. Since no runoff will be <br /> allowed to leave the permit area, Robins does not anticipate that a NPDES permit will need <br /> to be acquired from the Colorado Department of Public health and Environment. <br /> d) Wildlife Information <br /> There are no known endangered species within the vicinity of the permit boundary. The <br /> existing vegetation on the site is suitable for wild game such as deer, elk, and antelope, as <br /> well as native range for sheep and cattle. However, grazing on this particular area is <br /> somewhat limited as a result of low precipitation, high slopes, and sparse grass growth. <br /> Grasses within the boundary consist mostly of Indian Ricegrass, Winterfat, Blue Grama, <br /> Fourwing Saltbrush, Rabbit Brush, and Sand Dropseed. <br /> The area adjacent to Robins Rock Pit provides habitation for many small and big game <br /> species including coyotes, rabbits, fox, skunks, and rodents of all types. Big game includes <br /> deer, antelope, elk, occasionally black bears, and mountain lions. There are also a variety of <br /> bird species in the area. <br /> Large and small game hunting is allowed within the general vicinity, but the proximity of <br /> many nearby residences renders hunting near the pit dangerous. Very little hunting occurs in <br /> the nearby vicinity and the size of the pit is insignificant compared to the range which the <br /> small and large game have available. The pit does not in any way affect travel patterns of <br /> game in the area. Furthermore, there are no known breeding or calving grounds for wildlife <br /> on this property. <br /> I'r /),I I ed B\. .S'utrmilt tr < ritt� C'n <br /> 14) A'tnrrbrt 4N I Page 7 of 73 <br />