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adequate for final bond release if it is not less than 90% of the herbaceous cover as determined from <br />the reference areas with 90% statistical confidence utilizing a standard student's statistical t-test <br />comparison of the means." <br />The reclamation parcels contained in SL -10 were sampled in 2013 and 2014 in accordance with the <br />vegetation monitoring plan, detailed in Volume 1, Section 4.15 in the Colowyo PAP. Sample <br />adequacy was determined using the Cochran formula.. Both the sampling plan and the sample <br />adequacy determination are acceptable to the Division. <br />East and West Pit Bond Release Parcel Results <br />2013 Cover: Herbaceous cover: 43.74% <br />Herbaceous cover standard (90%):16.40% <br />The 2013 sample data for the East and West Pit successfully exceeds 90% of <br />the herbaceous cover standard. <br />2014 Cover: Herbaceous cover: 44.60% <br />Herbaceous cover standard (90%):20.30% <br />The 2014 sample data for the East and West Pit successfully exceeds 90% of <br />the herbaceous cover standard. <br />2013 Productivity: Herbaceous production: 1563.20 lbs/acre <br />Herbaceous production standard (90%): 341.39 lbs/acre <br />The 2013 sample data for the East and West Pit successfully exceeds 90% of <br />the herbaceous productivity standard. <br />2014 Productivity: Herbaceous production: 1629.65 lbs/acre <br />Herbaceous production standard (90%): 452.51 lbs/acre <br />The 2014 sample data for the East and West Pit successfully exceeds 90% of <br />the herbaceous productivity standard. <br />2013 Diversity: Five perennial grasses were sampled between 3% and 50% relative cover <br />and a perennial forb composition of 14.87% in relative cover. This exceeds <br />the requirement for a minimum of at least two perennial grasses between 3% <br />and 50% relative cover, and all forbs combined with between 1% and 30% <br />relative cover. The 2013 sample data for the East and West Pit successfully <br />exceeds reclamation success diversity standards. <br />2014 Diversity: Six perennial grasses were sampled between 3% and 50% relative cover and <br />a perennial forb composition of 11.35% in relative cover. This exceeds the <br />requirement for a minimum of at least two perennial grasses between 3% <br />and 50% relative cover, and all forbs combined with between 1% and 30% <br />relative cover. The 2014 sample data for the East and West Pit successfully <br />exceeds reclamation success diversity standards. <br />Proposed Decision and Findings of Compliance January 2017 <br />Partial Phase III Bond Release SL -10 Page 8 <br />