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• Species Diversity <br />The Operator evaluated the species diversity success standard during <br />2001. The evaluation, presented in Appendix 14-7, also recommends <br />a remedial revegetation treatment for CRDA-2. In accordance with the <br />evaluation, remedial revegetation treatments were implemented, during <br />November 2001, to the south and west facing slopes of CRDA-2 which <br />appear unlikely to meet final success criteria. The following species <br />diversity standard is based on the vegetation evaluations and <br />consultation with the DMG: <br />Item Relative Cover <br />- Total perennial cool season grass species > 0.5 <br />- Total perennial warm season grass species > 2.0 <br />- Total perennial fortis and suffrutescent species > 0.5 <br />- No reclaimed area shall have a single species that represents greater <br />than 70% relative cover, with the exception of annual grasses. The <br />annual grass component shall not exceed 70% relative cover unless <br />the annual grass component in the corresponding reference area also <br />exceeds 70%. In such instances, the relative cover of the annual grass <br />component of the reclaimed area shall not exceed the relative cover of <br />• the annual grass component in the reference area by more than 5%. <br />Revegetation Success Reference Areas <br />The baseline vegetation study pertormed in 1982 and included in <br />Appendix 10-1, Tab Section 10, established 3 reference areas. These <br />areas included a west facing hillside above and west of the south portal <br />designated as a Shadscale reference area, a drainage bottom <br />designated, as a Greasewood reference area and a southwest facing <br />hillside and drainage bottom designated as a Greasewood/Shadscale <br />reference area. During oonstruction of CRDA 2, a major portion of the <br />Greasewood/Shadscale reference area was disturbed and is no longer <br />available for comparison purposes. The Greasewood reference area <br />located on the drainage bottom west of the overland conveyor and <br />south of the Xcel plant was abandoned in favor of the new reference <br />area described below. <br />The new reference area was established during 1999 which represents <br />the Greasewood vegetation type. This reference area is located <br />approximately 1,500 feet northwest of the Cameo Refuse Disposal <br />Area No. 1 along the east-facing colluvial toe slope adjacent to the <br />BLM Bookcliffs access road and the ephemeral drainage, see F~chibit <br />61. <br />• <br />14-24 (Rev. 10/05) <br />