2009-01-12_REVISION - C1983058 - Laserfiche WebLink

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Permanent Pond Demonstration a Two sediment ponds remain one at the portal area and one at the coal sales yard. With the exception of a small area exemption at the portal area, all reclaimed areas drain to one of these permanent impoundments. Significant capacity remains for water and sediment retention in both of these ponds. The locations of the ponds will assist in keeping grazing animals dispersed over the revegetated area. No structural instability or signs of damage have been observed or documented through inspection at either pond. The portal area sediment pond sits on the reclaimed portal bench and has both a lower weep hole on the primary discharge riser as well as additional discharge capacity through the top of the riser. No buildings, roads, or other structures exist in the immediate areas downstream of these ponds should the pond discharge or fail through some catastrophic event. All water retained by the sediment ponds consists entirely of surface runoff from rain and snowmelt, therefore, quality of the water retained in the ponds would be expected to be excellent for domestic livestock and wildlife in general. V. VI. The Twin Pines No. 21is a d site. No public comments were received SUMMARY ?.? Z- ? o" FvJe,i 41A/`, concerning the TOJ process from the public or from the landowners within the permit area. The landowners or their representatives did not attend the final inspection and have voiced no objections during the revegetation liability period. Periodic Division field inspection has identified no significant on-the-ground issues and final inspection indicated the site is in excellent condition. The post-mining land use of rangeland has been achieved, with a self-sustaining mix of grasses and forbs well established as demonstrated by results of two years of vegetation sampling. Actual use of the reclaimed area for cattle grazing has been demonstrated and observed during the later years of the revegetation period. The site presents no hazards to public health and safety. PROPOSED DECISION ,A k.A- The Division finds that all surface coal mining reclamation operat' ns have been completed in accordance with the approved reclamation plan and all reclamation requirements of the Rules and the Act, to the extent possible considering the revoked nature of the permit. The site appears to have successfully achieved the post mining land use. Based on the findings set forth above, the Division proposes to terminate jurisdiction at the Twin Pines No. 2 Mine. This proposed decision terminates all Division of Reclamation, Mining, and Safety involvement for the permit area of the Twin Pines No. 2 Mine. Any person with a valid legal interest, which might be adversely affected by this proposed decision, may request a formal public hearing before the Mined Land ?? 4 V-41 ?tA tj 0. MZA ? S 14