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Table 1 - Revegetation success standards in the bond release area. <br />Cover 90% of the cover on the dryland reference <br />area, with each species comprising between <br />3 and 60 ercent relative cover <br />Production 90% of the cover on the dryland reference <br /> azea <br />Species Diversity Minimum 2 cool-season perennial grasses, <br /> 1 warm season perennial grass, and either 1 <br /> perennial forb or 1 shrub, with each species <br /> comprising between 3 and 60 percent <br /> relative cover <br />Reclamation operations <br />With the exception of sediment control ponds, the operator backfilled, regraded, distributed topsoil, <br />and seeded in the bond release area prior to 1992. The four ponds and associated ditches were <br />backfilled, graded, topsoiled, and seeded in 1997. <br />Previous Bond Releases <br />The Division has previously approved three of the four bond release applications submitted by the <br />operator as summarized in Table 2, below. <br />Table 2 -Previous bond releases at the Chimney Rock Mine. <br />Bond <br />Release <br />File <br />No. Decision <br />issuance <br />date <br />Phase <br />Acres/Location Bond <br />amount <br />released <br />SL-1 5/13/1992 I Entire permit area $480,000 <br />SL-2 9/19/1994 II 69 acres in East Pit and $0 (request <br /> Barren Ridge azeas denied) <br />SL-3 4/25/1997 II Entire permit azea $200,000 <br />SL-4 2/21/2003 III 16 acres total: All of $16,800 <br /> irrigated pasture <br /> (alluvial valley floor) <br /> and surface facilities <br /> area <br />3 <br />