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Cover <br /> In 2018, for BRB-5,introduced perennial cool season grasses were the predominate life form,consisting mainly <br /> of sheep fescue(Festuca ovina),and intermediate wheatgrass (Thinopyrum intermedium),two species used <br /> for grazing. Introduced perennial forb were the next predominate life form consisting mainly of Alfalfa <br /> (Medicago sativa),also used for grazing. The predominant cool season native grasses included basin <br /> wildrye (Leymus cinereus), and western wheatgrass (Pascopyrum smithi). Noxious weeds were observed at <br /> the site but they did not contribute significant amounts of vegetative all-hit cover. Total average all-hit <br /> vegetation cover was 64.9%. Allowable all-hit herbaceous vegetation cover was 55.5%after removing <br /> excess annual/biennial cover and noxious weeds. Average species density was 36.5 species per 100m2. <br /> In 2019, for BRB-5, introduced perennial forbs were the predominant lifeform observed followed by native <br /> perennial cool season grasses. Introduced perennial forbs were comprised primarily of alfalfa. Native <br /> perennial cool season grasses were comprised primarily of western wheatgrass and basin wildrye. <br /> Introduced perennial cool season grasses were predominately comprised of sheep fescue. Noxious weeds <br /> were observed at the site but they did not contribute significant amounts of vegetative all-hit cover. Total <br /> average all-hit vegetation cover was 81.4%. Allowable all-hit herbaceous vegetation cover was 72.3%. <br /> Average species density was 28.9 species per 100m2. <br /> For the ERA,the 90% success standard was found to be 37.9%and 38.8%cover in 2018 and 2019 <br /> respectively. The Allowable all-hit vegetation cover for both 2018 and 2019 in the BRBS exceeded the <br /> success standard, sample adequacy was demonstrated for the reclaimed area and therefore in accordance with <br /> Rule 4.15.11(2)(a),revegetation success in term of vegetation cover has been achieved. <br /> Production <br /> In 2018 in the BRBS the total herbaceous production was found to be 1,862.0 pounds per acre,all of which <br /> was allowable. Of this, 876.4 pounds were native perennial cool season grasses, 524.4 pounds were <br /> introduced perennial forbs, and 293.8 pounds were introduced perennial cool season grasses. Native <br /> perennial forbs (55.2 pounds per acre), introduced annual grasses(43.0 pound per acre),native annual and <br /> biennial forbs (37.6 pounds per acre), and introduced annual and biennial forbs(31.6 pounds per acre) <br /> contributed similar amounts to production. <br /> In 2019, for BRB5,the total herbaceous production was 2,090.5 pounds per acre, all of which was allowable. <br /> Of this, 1,182.4 pounds were introduced perennial forbs, 589.0 pounds were native perennial cool season <br /> grasses, and 243.5 pounds were native perennial forbs. Introduced annual and biennial forbs (56.8 pounds <br /> per acre),native annual and biennial forbs(14.0 pound per acre), and introduced annual grasses(4.8 pounds <br /> per acre)also contributed to total production. <br /> Ninety percent of the area weighted production standard was 695.5 and 632.9 pounds per acre for 2018 and <br /> 2019 respectively. In 2018 and 2019,the BRB-5 allowable herbaceous production exceeded the <br /> performance standard but sample adequacy was not achieved. Therefore, CCAI performed a one-sample t- <br /> test of the reverse null hypothesis that the total allowable herbaceous production is from the BRB-5 is less <br /> than or equal to 90%of the weighted area performance standard derived from the ERA. This hypothesis was <br /> rejected in both cases in 2018 and 2019 and therefore the BRB-5 passes the revegetation success standard for <br /> production in accordance with Rule 4.15.11(2)(c). <br /> Permit Number: C1982057 Page 10 of 15 <br /> Phase III <br />