2003-03-13_REVISION - M1977342 - Laserfiche WebLink

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utR•-3T-03 1•.:54d.N FROiI-Henderson (line 2nd Floor 303 569 2930 T-912 P.002/003 F-621 i j ~~.IiIAAX MOLYBDENUM COMPANY Henderson oueratinns i ~ %'Y; _ n s~er~ewiy a cyw;w oo°ue ca.arxa~ P.O. Boz 62 Empire, 0°lorao0 80438 ff \\ !3037 569-322 EXHIBII° Fez !3031 569.2830 March 7. ?003 ~~ Q ~ 20~ Certified Mail No. 7002 0510 0000 5652 2135 ~- Chairman Colorado Mined Land Reclamation Board i 313 Sherman Street, Room 215 Denver. Colorado 80203 Re: Henderson Mine and Mill Permit M-77-342 -Revisions to Amendment AM-04 Dear Mr. Chairman: Clitnax Molybdenum Company, Henderson Mine and Mill ("Henderson") is requesting the following changes to AM-04, submitted to the Colorado Division of Minerals attd Geology on January 14, 2003. Revision of 100 Percent Dry Cover Reclamation of Tailing Impoundment to 70 Percent tVater Resource Reclamation in AM-04, section 2.4, Henderson proposed to revise the plan for reclaiming dte current tailing impoundment with 100 percent dry cover. Instead, we offered a plan that would create a developed water resource over approximately 70 percent of the impoundment, with trte remaining 30 percent of the impoundtttent being reclaimed under the dry-cover scenazio. Tn our AM-04 request, we specified that Henderson would submit a Technical Revisiou (TR) at a later date to provide DMG with engineering design and other information necessary to evaluate this alternative and determine the relevant changes in the financial warranty (F~. Rather than submit a TR request, Henderson proposes to provide this additional information in a subsequent permit amendment. Henderson is proposing the use of the amendment process in order to allow public review and dialogue on Uie details of awet-cover. Revision of Tree and Shrub Planting In AM-04, section 2.2, Henderson proposed to plant lodgepole pine or shrubs at a rate of 50 pc:r acre. Henderson requests that this proposed revision be eliminated, and that the tree and shrnb planting be done in accordance with standards specified in Section 92 of Henderson's original 19i7 reclamation plan. Additionally, Henderson requests that plans to plant trees and shrubs on the reclaimed tailings deposition area (area 9) be eliminated. Based on our experiences at Urad and Climax, we expect close to 100% failure of trees and shrubs in this area. As an alternative, we propose the following: • Construct "islands" of thicker cover on portions of tree reclaimed tailing areas using material from the coarse ore stockpiles. Henderson would then plant trees aitd shrubs on these islands.