2002-04-30_GENERAL DOCUMENTS - C1981018

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2.05.3(2) Operation Description 5. Various sections of narrative in Section III of the permit application need to be updated to reflect current operational status. Examples include reference to East Portal ventilation exhaust p. III-land III-2, D seam mining narrative (and absence of B seam narrative) on p. III-7 and III-8, outdated reference to East Exhaust Portal facility on p. III-32, 6. Various sections of narrative in Section IV and V of the permit application need to be updated to reflect current operational status. Examples include reference to D seam extraction and East Portal ventilation on p. IV-l, and RDH-1 reference on page IV-4. Federal rule citation in second paragraph of p. IV-36 should be amended to appropriate state rule citation. Narrative on p. IV-54 should include reference to Coherex tank at Rock Dust shaft site. Table V-2 on page V-6 should be amended to delete reference to East Portal Area impoundment structures that have been reclaimed. 2.05.3(41 Ponds, impoundments and diversions 6. The second paragraph on p. IV-39 states that Pond DP-1 decant hole will be controlled by a valve that will normally be kept open, and references Map 80A. The map reference is erroneous, because Map 80A is the Pond SA "As-Built". The correct reference would appeaz to be Map 80B, "Typical Principal Spillway Plans, Sections & Details". Please amend the text as appropriate. 7. The DP-1 map version we have (Map 34), appeazs to have been most recently updated September, 1987, and has an "As-Built" designation under "Revisions". The map does not appeaz to show primary spillway detail with the valved decant hole, and does not bear an original P.E. signature. Please amend Map 34 to include the required primary spillway detail or reference the design detail of Map 80B, and provide a properly certified Map 34, DP-1 "As Built". 2.05.30 Topsoil Removal; 2.05.4(21~d) Topsoil Removal and Redistribution 8. The "reverse sequence" soil handling procedure for cheatgrass dominated locations in the Refuse Disposal Area was approved by the Division based to a large extent on observed reclamation results at RP-1 and at the various refuse area subsoil and topsoil stockpiles. Severe cheatgrass infestation developed on the topsoiled RP-1 fmal reclamation, necessitating complete re-initiation of revegetation efforts 5 yeazs after initial seeding. Observation of revegetation establishment on refuse area subsoil and topsoil stockpiles revealed that, in general, topsoil stockpiles had significant cheatgrass infestation, while subsoil stockpiles were dominated by perennial grasses and saltbush shrubs, with much less cheatgrass cover. We continue to be of the opinion that reverse soil handling is likely to Deserado Mine Apri130, 2002 8