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Tonya K. Hammond <br />Snowcap Coal Company, Inc. <br />April 12, 2011 <br />Page 2 <br />Page 14 -22, Vegetation Cover -- The text states "Achieve 90% of the perennial vegetation <br />cover of the approved reference area." To ensure better accuracy, the text should state the <br />success criteria as "Achieve 90% of the perennial vegetation cover of the approved reference <br />area sample mean at the 90% confidence level." Please amend the text for Vegetation Cover <br />and Herbaceous Production on page 14 -23. <br />6. Page 14 -22, Species Diversity, last sentence — The Division questions if a 5% of relative cover <br />buffer is needed in the event the annual grass cover is greater than 70 %. The data provided <br />with the 2010 Annual Reclamation Report suggests that the annual grass cover is greatest in the <br />reference plots and is significantly less on the reclaimed areas. Please justify why this <br />provision is needed or remove from the permit revision. <br />If you have any questions, feel free to contact me. <br />Sincerely, <br />tA&a P <br />Michael P. Boulay <br />Environmental Protection Specialist <br />Enclosure <br />C: Denver File/DRMS <br />