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analysis were performed for fills having 4h:1v using the actual design parameters determined from <br />the refuse in place. <br />The results of the Geotechnical Investigation are included in Illustration 21 and the results of the <br />chemical analyses are included in Section II.I -Illustration D. <br />Map 82 presents calculations on the amount of topsoil to be stripped from Sub-Areas 1 to 4 plus the <br />associated sediment ponds. The tables presented on Map 82 show that Sub-Area 1 and Pond <br />RP-1 involve a total disturbance of 14.07 acres. Further, the calculations show that an average <br />thickness of 1.51 feet of topsoil was stripped from Sub-Area 1 and Pond RP-1. <br />Illustration D of the Soils Report contained in the permit application gives Selenium values at depth <br />for core holes R-1 to R-7. <br />The selenium values reported by Agricultural Consultants, Inc. appeared to be high. The lack of <br />observed selenium efion and animals was deemed to be evidence that selenium was not present in <br />levels to be harmful or to require special handling procedures. In the spring of 1981, split samples <br />were sent to Inter-Mountain Laboratories for analysis. The samples were dried, sieved using -20 <br />mesh, extracted in a steam bath, filtered and analyzed by the gaseous hydride method and atomic <br />absorption spectrophotometry. The resultant selenium values ranged from undetectable to 0.022 <br />ppm., well below the 2 ppm. standard. Therefore, there are no selenium problems expected at the <br />refuse disposal area. <br />The waste fills were designed by, and the construction was certified by a qualified engineer <br />registered in the State of Colorado. <br />Waste banks #1 has a face slope of 5h:1v. Subsequent waste banks will have final face slopes of <br />4h:1v or gentler. The gentle slope was selected to provide positive stability, minimize potential <br />slope erosion, allow the reclaimed banks to blend into the existing natural terrain and allow animals <br />to graze on the sides after final reclamation. <br />Estimates of sediment from the first four refuse areas are included in Illustration 8. The results are <br />listed below. These estimates are based on the entire refuse pile being covered with bare topsoil. <br />The estimates were made using the (LISLE) Universal Soil Loss Equation (see Section V.B.4j. <br />Since seeding will commence soon after the topsoil is placed, these estimates are conservatively <br />higher than actually anticipated. As vegetation is established, the sediment yield per year will be <br />drastically reduced. When vegetation has been established equal to the premining growth in the <br />area; the sediment yield will be on the order of 25 times less than for bare soil as calculated. <br />`. J <br />(Permit Renewal f/3, 8199) V-15 <br />