REP21022 - Laserfiche WebLink

Home Browse Search

Lifeform Species Density BRB3 SB Ave Annual/ Biennial Forbs 7.4 3.2 Annual Grasses 1.2 0.0 Perennial Forbs 6.7 74.7 Perennial Cool Season Grasses 6.4 8.2 ISmoM6 = ((3.2+0.0+6.7+6.4)*2) / (7.4+3.2+1.2+0.0+6.7+14.7+6.4+8.2) = 73.2% The weighted average for the overall similarity of the reference area lifeform species density to BRB-3 lifeform species density was calculated as follows: 75.5%*0.83 + 73.2*0.17 = 75.1 Since this value is greater than 90% of the standard (0.9 x 70% = 63%), Alternative Test C is passed for BRB-3. Regarding Alternative Test D, the total number of native species encountered in the twenty 100 sq. m. (2m x 50 m) samples of BRB-3 was 55, substantially greater than the average native species density of either the Mountain Brush Reference area (29.6 species per 100 sq.m.) or the Sagebrush/Snowberry Reference Area (27.9 species per 100 sq.m.) Hence Alternative Test D is passed for BRB-3. Note that BRB-2, older reclamation that experienced the seeding of fewer native species and more seeds per square foot of aggressive forage species (see Appendix 3, Table 3-1) possessed 39 native species in the twenty 100 sq.m. samples, demonstrating that the diversification of the seed mix and the reduction or elimination of aggressive forage species did have the desired effect of ultimately improving native species diversity. In summary, for BRB-3 the bond release block subject to species diversity requirements under the Permanent Program rules, Mandatory Test A was passed as were Alternative Tests B, C, and D and hence the species diversity test as a whole is passed. Assessment of BRB-4rev for Compliance with Phase 11 Performance Standards The upper limit of the 90% confidence interval associated with the area sampled to produce cover data applicable to a potential Phase II bond release application (BRB- 27