2009-09-09_PERMIT FILE - C1980005A

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Petroleum Contaminated Material Stockailes. All petroleum contaminated materials treated to reduce TPH concentrations below 500 mg/kg will ultimately be disposed of in the solid waste disposal area. Following the final removal of petroleum contaminated materials, the stockpile footprint areas will be covered with a minimum of 4.3 inches of suitable topsoil and planted with Seed Mix No. 1. It is anticipated that final reclamation of this area will occur in 2012, in conjunction with final reclamation at the solid waste disposal area. Sedimentation Ponds and Access Roads to These Ponds. Ponds 002, 003, and PECOCO reservoir have been approved by CDMG as permanent impoundments. Pond 002 was approved as a permanent impoundment in CDMG's Proposed Decision and Findings document dated December 31, 1986; PECOCO was approved as a permanent impoundment in CDMG's Proposed Decision and Findings document dated November 10, 1992; and, Pond 003 was approved as a permanent impoundment in CDMG's Proposed Decision and Findings document dated June 6, 1997. Appendix 7-6a presents the permanent pond demonstration for Pond 002, and the as-built is shown on Exhibit 7-8. Appendix 7~b presents the permanent pond demonstration for Pond 003; the as-built is shown on Exhibit 7-11. Appendix 7-6g presents the permanent pond demonstration for PECOCO; the as-built is shown on Exhibit 7-18. Seneca Coal Company, the postmine landowner for a portion of Pond 002 and all of Pond 003, has requested that these ponds be left as permanent postmine features. SCC's request is presented in Appendix 13-12a, Landowner Requests for Permanent Features. Request forms for the remaining portion of Pond 002 and PECOCO have been submitted to the postmine landowners. Upon receipt by SCC, the executed requests will be submitted to CDRMS for insertion into Appendix 13-12a. Based on requests received from postmine landowners, SCC also proposes to leave Ponds 004 and 008 as permanent impoundments. Leaving these ponds as permanent features enhance the proposed post-mining land use of livestock grazing and wildlife habitat. In accordance with Rule 4.09.13, SCC has designed and constructed the ponds to approved CDRMS criteria. Appendix 7-6c, Sediment Pond No. 004, presents the permanent pond demonstration for Pond 004. Appendix 7-6e, Sedimentation Structure 008, presents the permanent pond demonstration for Pond 008. Forms requesting that these ponds remain as permanent postmine features have been mailed to the postmine landowner. Upon receipt by SCC, the executed TR-46 13-39 Revised 12/08