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PERMIT #: M-2001-010 <br />INSPECTOR'S INITIALS: JLE <br />INSPECTION DATE: September 27, 2010 <br />OBSERVATIONS <br />This was a normal monitoring inspection of the Allison Gravel Pit, DRMS File No. M-2001-010 operated by Elbert <br />County. This site is located approximately 7 miles south of Matheson, Colorado in Elbert County. I, Jared Ebert of the <br />Colorado Division of Reclamation, Mining and Safety conducted the inspection. Mr. Jeremy McKnight accompanied me <br />on the inspection. <br />This is an 80 acre 112c mining operation. The proper mine entrance sign and permit boundary markers were in place at <br />the time of the inspection. The haul road enters the site on the west side of the permit area from county road 149. The <br />operator stockpiles mined material and recycled asphalt in a small flat storage area on the north side of the haul road <br />adjacent to the entrance. South of this site is a previously excavated area. This site has been graded with pit slopes set at <br />a 3:1 horizontal to vertical ratio. Topsoil has been spread in this area and the site has been revegetated with native <br />grasses, primarily blue grama grass and side oats grama. Small erosion gullies have formed on the southern pit slope of <br />the reclaimed area. The operator should monitor these sites to prevent further growth of these small gullies. The County <br />may need to stabilize these slopes using erosion control methods if these gullies continue to grow. <br />Mining is occurring in the phase B and C area, and approximately 4.5 acres is affected by active mining at this time. This <br />is below the 9 acre maximum as specified in the permit application. The Operator strips topsoil in advance of mining and <br />stockpiles the material adjacent to the pit excavation. These stockpiles appear to be stable with vegetative cover. The pit <br />slopes are set at a 3:1 horizontal to vertical ratio as the Operator pushes this material into the base of the pit excavation. <br />A storm water ditch has been constructed from the base of the pit excavation to a storm water pond northeast of the <br />stockpile area near the entrance of the mine site. Water was standing in the pond at the time of the inspection. Mr. <br />Mcknight indicated water is impounded in the pond indefinitely and does not percolate into the soil or discharge within 72 <br />hours. If storm water is impounded for longer than 72 hours, the Operator must obtain a Temporary Substitute Water <br />Supply Plan and/or a Well Permit from the Office of the State Engineer (SEO). The County will need to demonstrate <br />compliance with the SEO. This issue is cited as a problem at the beginning of this report and will require corrective <br />action to be taken by the Operator. <br />PHOTOGRAPHS <br />the active mining area. <br />the northwest corner of the site near the entrance. <br />Page 2 of 4 <br />Figure 2.) Recycled asphalt stored in the stockpile area near <br />Figure 1.) From the entrance of the haul road looking east into