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<br />8 <br />noted in afield inspection that the Gossard Pond spillways are not clearly <br />represented on the approved design and included in the as-built. Please provide the <br />pond as-built designs noted above, or direct us to where they are located in the <br />permit application. <br />8. The Division was unable to locate the designs and certified as-built drawings for the <br />Sewage Ponds, Aeration Pond and Sediment Sump that are depicted on Map 12A. <br />Please provide the Division with the designs and certified as-built for these <br />impoundments as required under Rule 4.05.9, or direct us to where they are located <br />in the permit application. <br />9. During a partial inspection at the Colowyo Coal Mine, it was noted that the Gossard <br />Pond contained two closed spillways (primary and emergency) that combine <br />underground to form one closed spillway. Rule 4.05.6(d) requires either a <br />combination of principal and emergency spillways, or a single open channel spillway <br />configuration be used. As noted above, the Division does not have a copy of the as- <br />built drawing for the Gossard Pond. Please inform the Division how the Gossard <br />pond meets the regulatory requirements of Rule 4.05.6(d) and Rule 4.05.6(3)(e), or <br />redesign the sediment ponds to be in compliance with the regulations <br />10. Page 4.05-6, Colowyo states that sediment pond, stock ponds and permanent <br />diversion associated with the Streeter Fill will be left in place. The Division could <br />not locate a demonstration for retaining the Streeter Fill Pond or stock ponds as <br />stated in the permit application. Please provide the Division with demonstrations in <br />compliance with Rule 4.05.9 to retain the Streeter Fill sediment pond and <br />stockponds, or revise the statement on page 4.05-6. <br />11. The Division does not have a current copy of Colowyo's SPCC plan or SWMP plan. <br />The Division's files only show a 1986 copy of the plans. During the March, 1995 <br />complete inspection, it was noted that 1992 SPCC and 1992 SWMP plans were <br />located in the Colowyo files. Please provide the Division a copy of the SPCC and <br />SWMP plans to be inserted in the appropriate exhibit. <br />12. Page 2.04.7-85, In its discussion of potential impacts, Colowyo states, "The Colowyo <br />surface mining activities will not cause contamination.........of any underground or <br />surface sources of water in the general area of the mine." However, the Leonard <br />Rice report presented in Volume III of the PAP discusses the potential for the <br />entrance of pollutants into the alluvial groundwater system through spoils piles and <br />possible development of spoil springs. The report also refers to the train loadout <br />area as a potential source of selenium to the surface water system via two potential <br />pathways: groundwater flow or surface flow of springs at the base of the coal pile. <br />Although the Leonard Rice report stated that no impacts had been observed at the <br />time the report was prepared, Colowyo should acknowledge the potential impacts in <br />the permit. <br />