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November 2005 Hayden Gulch Mine 'Final Bond Release Application Page 7 revegetation success, This technical standazd was approved by CDMG as part of TR-62. The total number of species (by life form) were tabulated to determine the relative species richness (species diversity) of the reclaimed area. This measwe provides a means of examining progress toward the return of a diverse species composition in the reclaimed area. The three shrub enclosures also have an average area-weighted shrub density criterion -which was approved in TR-62 to be 750 stems per acre. 2004 Reyegetation Sampling Data The 2004 vegetation data are presented in Appendix A.1. Table 2, 2004 and 2005 Cover Data, summarizes total vegetative covet data (first hit) for the four parcels. Total herbaceous cover in 2004 for the reference area averaged 52.3 percent -the performance standard is 90 percent of the reference area mean, which equals 47.1 percent. The total herbaceous cover for the permit azea -the four parcels combined -was 53.9 percent (the minimum values is 51.4 percent with 90 percent confidence), which is greater than the performance standard value. A breakdown by individual parcel shows that the total herbaceous cover values for Parcels E, HG-8 and 003 all exceeded the performance standard value, while the total herbaceous cover value for the Slump Area parcel was slightly less than the performance standard value, TABLE 2 ' 2004 AND 2005 COVER DATA' Parcel 2004 Total Herbaceous Cover 2005 Total Herbaceons Cover Reference Area Standard 52.3 47.1 47.5 42.8 Combined Permit Area Value 53.9 56.8 E 57.8 55.4 HG-8 51.6 57.4 003 59.4 60.8 Slum Area 42.0 51.7 Notes: 1) First hit data Species diversity of the reference area sampling averaged 15.3 species per 100 square meters (100 sq. m.). As shown on Table 3, Species Diversity Data, the four parcels in the permit area had species diversity values that generally exceeded the species diversity value observed in the reference area. It is notable that highest species diversity value (23 species per 100 sq, m.) was observed in the Slump Area parcel -the pazcel with the lowest cover value. This underscores the inverse relationship between the abundance of cover (and accompanying competition) and the presence of opportunities for plant diversity to develop on a revegetated site. The species diversity data also indicated that species diversity in the permit area was similar to that observed in the reference area. Introduced perennial grasses were the dominant life form. The reference area had an introduced perennial grass