Laserfiche WebLink
SITE DESCRIPTION EXHIBIT B <br /> 1. Location and General Land Use Information <br /> The site is located north of Hooper, Colorado in Alamosa County. The site is accessed from CR <br /> 62. The site is surrounded by high altitude rangeland and open space. Prior to excavation,the site <br /> was dry rangeland wildlife habitat. The site was previously the home of a Colorado Department <br /> of Transportation borrow pot known as the Curtis Pit. That pit was reclaimed and released in <br /> 2011. <br /> All permanent man-made structures within 200 feet are identified on Map E-1 and listed in <br /> Exhibit L. <br /> 2. Site Geology <br /> The site is located in the San Luis Valley,to the west of the Sangre de Cristo Mountains,which <br /> was formed as the Rio Grande Rift zone was activated. As the basin was formed, volcanic <br /> bedrock was buried by deep alluvial fan deposits that originated in the adjacent highlands. The <br /> site geology consists of loamy sand overlaying alluvial material,mostly sand. The excavation <br /> will go down roughly 10 feet. There are no hazardous or acid forming materials expected to be <br /> encountered during excavation. See the NRCS soil report in Appendix 1 for more details. <br /> 3. Surface Hydrology <br /> Prior to mining,the site was flat. Previous mining has resulted in a six foot deep pit in the <br /> southwest corner that act as sump and that does not have an outfall. The pre-mine topography of <br /> the site is shown on Map E-1. This topography is based on the United States Geological <br /> Quadrangle for the area and is approximate. All of the runoff on site would flow towards the <br /> interior pits where it will infiltrate. <br /> Stormwater is kept from the disturbance area of the borrow pit with berms installed on the south <br /> and west side of the pits, uphill of the disturbance area. The compacted earth berm that <br /> accomplishes this is shown on Map E-2. <br /> The Farmers Union Canal runs along the north side of the permit boundary. A 50-ft setback will <br /> be maintained between the canal and the edge of disturbance. <br /> Hooper Pit B-1 <br /> April 2020 c)rcg l ewidci and Associates 1'1.1(' <br />