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provide an indication of any large areas where there may be significant departure from the approved replacement thickness. Please provide a comprehensive table presenting the soil replacement depth sample results obtained to date at Seneca II-W, keyed to a reclamation map with parcels delineated and identified by year seeded or topsoiled. Please ensure that future sail depth verification data ere presented in the same format. 12. Page 32 of Permit Tab 21 contains a commitment to complete an annual topsoil balance report to be submitted each year within the Annual Reclamation Report. For the original permit area, the required mean replacement depth is 1.3 feet (15.6 inches). For the South Extension of the permit area, the permit specifies multiple zones of differing mean replacement thickness (1 foot, 1.7 feet, 2.5 feet, and 4 feetl• The over-all mean replacement thickness specified for the South Extension area is 1.7 feet (20.4 inches). The 2004 Annual Reclamation Report contains the required, survey-based topsoil balance evaluation. Table 04.1 documents a total volume of 698.1 acre feet of topsoil in stockpile at the end of 2004. The narrative section of the report on page 2 and 3 indicates that the mine area disturbance (at the end of 2004) that will ultimately need to be topsoiled is 473 acres. This balance of disturbed acreage to be topsoiled and volume of soil in stockpile translates to an average replacement thickness of 1 .48 feet (17.8 inches). The report assessment concludes that the current topsoil balance documents an adequate volume of sail in stockpile to reclaim the mine. However, the Division notes that at the end of 2004, topsoiling had been completed within the original permit area, with the exception of certain facility area locations. With these exceptions, all of the acreage to be topsoiled as of the end of 2004, is within the South Extension Area. So it would appear that the stockpile volume would result in a mean replacement thickness a couple inches short of the 1.7 foot thickness projected for the South Extension Area. a) Please update the narrative assessment in the topsoil balance section of the report to clearly reflect consideration of the currently approved replacement depths for the South Extension, as well as the original permit area. Projected mean replacement thickness for the South Extension area may have been adjusted in PR-5 amendments, to reflect the most recent stockpile survey; please verify that this is the case. 13, Permit Tab 22 contains commitments to report annual weed control activities, as well as annual qualitative monitoring assessments to identify new infestations and assess status of previously treated areas. The 2004 Annual Reclamation Report contains a description of control activities, target species, herbicides used and rates applied, as well as herbicide application daily logs, and the 2004 Weed Control Map, The Weed Control Map documents that 2004 control activity was largely restricted to road corridors and long term facility areas. A comprehensive weed inventory/mapping project to assess the status of previous treatments was attempted in 2004, but was not completed due to problems with the contractor. This project is to be completed in 2005, and repeated in subsequent years. The operator has retained a different contractor to perform the annual assessments. A severe infestation of black henbane was documented in the spring of 2005 in the "D" Pit area, and control efforts were promptly initiated; monitoring and follow-up