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a 2004 ARR REVIEW RESPONSE COMMENTS Rule 2.04.13(11(al-(f) general reoorting requirements 1. The ARR reporting form acreages and associated acreage figures on page 2 of the narrative section of the report were updated as requested to correct discrepancies. Item Resolved. 2. Acreage discrepancies between map and table were eliminated. Separate maps were provided for various activity/disturbance categories, which significantly improved the clarity of the report. Item Resolved. 3. Grading map was amended and map acreage now corresponds to table acreage. Item Resolved. 4. Topsoil Replacement map was amended and map acreage now corresponds to table acreage. Item Resolved. 5. Seeding acreages and discrepancies between map and table were substantially clarified, however one final change is requested to the table. The 2004 "Acres Seeded" category on the reporting form table lists 246.1 acres. The table category is misleading; it should be "Acres Seeded or Planted". Please submit an amended reporting form table, with the 2004 "tree plot" 29.6 acres included in the total for the 2004 "Acres Seeded" category (e.g. 275.7 acres). 6. Clarification and revised mapping was provided regarding the location and extent of the various categories of mining and reclamation related land disturbance. Item Resolved. 7. Responses and amended report information addressed most of the questions we had regarding planting and seeding information. We still are not clear as to whether mountain big sagebrush was seeded along with herbaceous components of Seedmix 1. It was not listed on the seed tag provided. Response to 7b indicates that several shrubs were added by hand to Seedmix 1, but big sagebrush was not listed. Please clarify whether mountain big sagebrush was seeded in the 2004 Seedmix #1 seeding areas. Rule 2.04.13(2) additional monitoring information required by approved permit 6. Amended final graded topographic map with requested detail was provided. Item resolved. 9. Item Previouslv Resolved. 10. Item Previouslv Resolved. 11. SCC provided summary tabular and graphical information regarding topsoil replacement thickness. Applicable average replacement depth is 1.3 feet (15.6 inches). Of 170 depth samples, fewer than 4% indicated depth of less than 11 inches. 60% of the samples indicated replacement depth of greater than 20 inches, and average replacement depth was 23.1 inches. A potential concern raised by these data is that replacement of soil significantly deeper than permit specified average replacement depth might result in a 2