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FkOM BRI.PZ 8 RSSOCIRTES INC FAX N0. ~ 970 =C3 9736 Jan. 03 2001 04:32PM P2 <br />Mr. Gre~;K Square <br />Y age 2 <br />January ~, 2001 <br />Fugitive Dust Emissions Notice -These applications will be filed for any <br />equiptent that will be used on site that does not currently have a notice filed <br />for it. Roaring Fork Resources permits individual pieces of equipment or <br />plants so that they can be moved in between pits. A list of this equipment will <br />be provided when it is compiled next week. <br />Roazing Fork Resources is not aware of any additional permits that aze required at this time. <br />However, if additional permits are required then the applications will be made to the appropriate <br />agencies. <br />item 2 -Potential impacts on the river channel from flooding of the Bravel pit and surface facilities <br />area. The Colorado River is being modeled for the 100 year flood using HEC-RAS for the <br />portion of the Colorado River adjacent to the west propety line to horse fence, renewable <br />resource area and the majority of the slough to east property line mining areas. The results of this <br />study will be forwarded when it is completed. <br />Item 3 -Adequate temporary revegetation on pit and embankment slopes. The 112 permit <br />application included a section on the reclamation of the pit areas. The pit slopes into the ponds <br />will be 3:1 from the pit crest down to a point that is 10 feet below the assumed surface elevation <br />of the water and from that point the slope will be 2:1 to the pit bottom. In the shallower pits that <br />are approximately 15 feet deep, the 3:1 slopes aze extended from the pit crest to the bottom of <br />pit. These slopes are in accordance with the Division of Minerals and Geology rules and <br />regulations. <br />The section of'the 3:1 slope that is above the projected water surface elevation will be covered <br />with a minimum of six (6) inches of topsoil and seeded with the approved seed mix. In addition <br />to seeding with fortis and Brasses, groups of trees will be planted around the periphery of the <br />ponds. Ten to fiileen trees are in each group. There are five to six groups per acre around the <br />periphery of the ponds. The existing trees in the undisturbed ground on the pit edges are <br />expected to provide a basis to allow natural infiltration of these species into the spaces remaining <br />around the perimeter of the ponds. The reclamation success standard is a 70 percent survival rate <br />for the trees after the second growing seasons from the initial planting. <br />The response to Mr. Allen Sorenson's and Mr. Tom Schreiner's, DMG, review comments <br />describes the reclamation alternatives for the renewable resource area. This information has bcen <br />previously submitted to the City of Rifle and its Engineer reviewing the application on December <br />29. 2000. <br />Temporary stabilization of active mining slopes is not required by the DMG regulations and <br />therefore not addressed in the 112 permit application. However, good mining practice suggests <br />that i£unexpected mining conditions are encountered which make the active mining slopes <br />projected in the application unsafe, then the mining scopes will be flattened in that specific area <br />plat is unsafe. <br />