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Mr. Rob Zuber <br />January 8, 2014 <br />Page 2 <br />• Since CCC is implementing different seed mixes depending upon the slope and topsoil <br />replacement thickness, it is important to designate which seed mix was planted in which <br />areas. In the future, please provide this information, including areas where interseeding <br />was performed. <br />Response: Colowyo has historically noted on Figure 3 -2 where and when interseeding has <br />occurred. Colowyo will continue to provide this information in future ARRs. Colowyo will also <br />provide an additional note on Figure 3 -2 indicating approximate acres of Sagebrush Steppe <br />and/or Grassland were planted for each reclamation parcel. <br />• Please make sure you follow reporting requirements and additional sampling <br />requirements for high SAR values (as well as high pH or conductivity). It appears that <br />this was not done during the reporting period for the 2011 ARR. <br />Response: Colowyo is required to report overburden suitability at the following values for SAR, <br />pH, and EC: <br />Parameter Suspect Level <br />pH Less than 5 or greater than 9 standards units <br />EC Greater than 12 millimhos /cm <br />SAR Greater than 15 <br />During the 2011 report year, as shown on Figure 8 -3, pages 8 -8 and 8 -9, there were not any <br />sampling results that were greater than (or less than, in the case of pH) the values listed above. <br />Therefore, Colowyo was in compliance with requirements from the PAP and reporting <br />requirements to the Division, and was not required to do any additional reporting in the 2011 <br />ARR. <br />If you have any additional questions or concerns please contact Chris Gilbreath at (303) <br />254 -3291 or cgilbreath @tristategt.org. <br />Sincerely, <br />Barbara A. Walz <br />Senior Vice President <br />Policy and Compliance <br />Chief Compliance Officer <br />BAW:TT :pvt <br />cc: Chris Gilbreath (via email) <br />Tony Tennyson (via email) <br />AN EQUAL OPPORTUNITY/ AFFIRMATIVE ACTION EMPLOYER <br />A Tou:hstone Energy-'Cooperative �� <br />