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0.90[0.110(883.7)+0.345(547.9)+0.313(907.1)+0.128(515.8)+0.104(644.9)] = 632.9 lbs/acre <br /> The 2019 BRB-5 mean allowable herbaceous production of 2090.5 pounds per acre for exceeds 90 percent <br /> of the production performance standard of 632.9 pounds per acre. <br /> Though the 2019 BRB-5 reclaimed area herbaceous production exceeds 90 percent of the production <br /> performance standard, sample adequacy was not demonstrated in the reclaimed area or the reference areas <br /> (minimum of 30 samples). Therefore reclamation success under Phase III BRB-5 is demonstrated by <br /> passing a one sample t-test of the"reverse null" hypothesis(CDMG 2005 revised rule, 4.15.11(2)(c)). The <br /> BRB-5 production data were first evaluated for normality using the Shapiro-Francia test. Based on the <br /> allowable herbaceous production data; the normality test was passed. <br /> Testing for Revegetation Success Report in Attachment F-2018-2019 BRB-5 Revegetation Success <br /> Supporting Documentation. <br /> A one-sample t-test of the"reverse null hypothesis asserting that the 2019 BRB-5 total allowable <br /> herbaceous production (lbs per acre)is indistinguishable from the weighted average Reference Area <br /> allowable herbaceous production is as follows: <br /> x — (0.9 * technical standard) <br /> tcalc = / s <br /> l�) <br /> t — 2090.5 — (0.9 * 632.9) — 6.868 <br /> talc — 1200.5 <br /> ( 32 ) <br /> Since critical tt= 0.853 (one-tailed, alpha= 0.2, 31-1 df)is exceeded by tcalc (6.868), the hypothesis of no <br /> difference is rejected and reclamation success for allowable herbaceous production under Phase III is <br /> demonstrated in 2019. <br /> Woody Plant Density <br /> The location of fenced woody plant concentration areas in the BRB-5 were established by SPL. All other <br /> un-fenced portions of the BRB-5 were labeled as"background" density. Should the"background" density <br /> fall below the 1000 stems per acre standard, areas labeled as "volunteer" density (totaling at least 10% of <br /> the unfenced bond release block acreage)were determined by field mapping and assisted by aerial <br /> photography (Routt County DOQQ 2011). These areas were apparently (visually)greater than or equal to <br /> 1000 stems per acre (one quarter shrub per m2; 25 shrubs per 100 m2) and include any non-fenced <br /> remnants of woody plant density concentration areas planted by SCC. <br /> 11 <br />