Laserfiche WebLink
topsoil to a minimum depth of six inches. Vegetation success criteria for pre 1978 (prelaw), area <br /> entails limited vegetation sampling that includes a qualitative description. A diverse and <br /> permanent vegetation cover, capable of self-generation, comprised of species native to the area, <br /> and at least equal in extent of cover to pre mining vegetation shall be achieved. The premining <br /> cover standard for the pre law area of the Strip Pit is understood by the permittee to be 30% or <br /> greater,based on the 1983 cover sampling period and one year of sampling. Additionally, a letter <br /> from the Soil Conservation Service stating that post mining land use criteria has been met is required. <br /> These areas will be deemed successfully revegetated when the cover of these areas is 30%or greater. <br /> Regarding the"post law" (land affected after May 3, 1978), a reference area was established <br /> (reference area B),to evaluate revegetation success. Vegetative cover is considered successful for <br /> this portion of Williams Fork Mine Strip Pit when cover in the reclaimed areas is not less than 90% <br /> of the cover in reference area B,with a 90% statistical confidence for lands affected after May 3, <br /> 1978. <br /> The Utah Tract, formally part of the Trapper Mine permit was regarded, topsoiled, seeded and mulched <br /> between 1979 and 1983. When this area was acquired by MCM's predecessor company(RAG),the <br /> acquisition included assumption of reclamation responsibility,revegetation success and bond release. <br /> The approved reclamation plan for the Utah Tract calls for replacement of topsoil to 12 inches or more. <br /> MCM utilizes a technical standards for cover and production on the Utah Tract Range Site A area. <br /> Reference area 3 was sampled to provide cover and production data for comparison with Range Site B.As <br /> discussed in section 2.05.4 and Exhibit 14a of the PAP, reclaimed parcels are compared to three different <br /> range standards based on elevation. The Utah Tract has two different range sites designated as follows: <br /> 1. Range site A standards apply to elevations greater than 7200 feet <br /> 2. Range site B standards apply to elevations between 6700 and 7200 feet. <br /> For Range Site A,vegetative cover will be acceptable when the site achieves at least 33%herbaceous <br /> cover plus 19%litter, and a total allowable cover value of at least 52%. These technical standards were <br /> developed for Range Site A from range site estimated pre and post mining soil loss,based on the lowest <br /> percent cover from premine areas. <br /> Reclaimed Range Site B will be deemed successful through comparison with the reference area <br /> parameters. <br /> Phase III Bond Release <br /> Vegetation success criteria for pre the 1978 (prelaw), area in the Strip Pit entails limited vegetation <br /> sampling that includes a qualitative description. Quantitative production,woody plant density and <br /> species density performance standards are not required in pre law areas. <br /> Permit Number C1981044 Page 11 of 25 <br />