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mean - 1.15"s = 33.9 -1.15 (4.8) = 28.4 <br />Area weighted reference mean species density: <br />0.9*[(0.83"MB)+(0.17*SB)] = 0.9[(0.83"'22.7)+(0.17"`28.4)]=21.3 species per 100 <br />sq. m. <br />Mean total species density in 2003 Reclamation = 26.8 <br />Mean total species density in 2005 Reclamation = 21.2 <br />Although these ~~iversity tests are designed to test more mature vegetation that is eligible for bond <br />release and the inevitable presence of ruderal species in young vegetation confuses the matter, <br />comparisons u:;ing data from these young areas are of some interest. As of 2007, the 2003 <br />Reclamation ~nrell exceeds the standard, while the very young 2005 Reclamation <br />approximately equals the standard. <br />With regard to ~~Iternative Test C), the similarity index between the lifeform species density values <br />for the prescribE:d lifeforms for BRB-3 and the weighted average for the reference areas is 63.0%. <br />Since this value: is not less than 90% of the standard (0.9 x 70% = 63%), Alternative Test C) is <br />passed. <br />Regards Alternative Test D), the total number of native species encountered in the twenty 100 sq. <br />m. (2m x 50 m) samples of BRB-3 was 56, substantially greater than the average species density <br />of either the Mountain Brush Reference area (29.5 species per 100 sq.m.) or the Sagebrush <br />Reference Area (28 species per 100 sq.m.) Hence Alternative Test D) is passed. <br />In summary for' the 2003 Reclamation, Mandatory Test A) was passed as were Alternative Tests <br />B), C), and D) ;and hence the species diversity test as a whole is passed. For the 2005 <br />Reclamation, 11~andatory Test A) was passed as were Alternative Tests B) and D). Test C) was <br />barely failed, but inasmuch as the permit requirement would necessitate passing A) plus two of <br />the other three, the 2005 Reclamation also as a whole passes the species diversity test. <br />14 <br />