PERMFILE50004

• Permit No: M2004017
• IBM Index Class Name: Permit File
• Doc Date: 5/6/2004
• Doc Name: Final Adequacy Review Comments
• From: DMG
• To: Environment Inc
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Na[ural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
May 6, 2004
Mr. Stevan L. O'Brian
Environment, Inc.
7985 Vance Drive, Suite 205A
Arvada, CO 80003
RE: Final Adequacy Review Comments - Kattenberg Pit, Regulat 112 Application
File No. M-2004-017, Class: Permit
Dear Mr. O'Brian:
COLORADO
DIVISION O F
MIN SRALS
GEOLOGY
RECLANATION•MIN ING
SAf ETY•SCIENCE
Bill Owens
Governor
Russell George
EzeMive Direcor
Ronald W. Cottony
Division Director
Natural Resource Trustee
Listed below aze remaining adequacy review comments on the above-captioned Regular 112 Application
that will need to be resolved on or before the June 7, 2004 decision date. Therefore, please respond to
these remaining comments on or before June 7, 2004. Please be advised that your application may be
deemed inadequate and maybe denied on June 7, 2004 unless the following adequacy review items aze
addressed to the satisfaction of the Division.
6.4.4 EXHIBIT D - Minine Plan
4. The applicant has stated on page 12 that some imported inert material will be imported for recycling
purposes and that some of the excess inert material may be used as fill in the slopes. Prior to importation
and backfilling of such materials, the applicant will need to submit a signed affidavit certifying that the
imported materials are clean and inert, as defined in Rule 1.1(20). Please respond,
6.4.5 EXHIBIT E -Reclamation Plan
7. The applicant specifies on page 15 that there aze limited wetland areas associated with a spring on the
southwestern part of the site. The applicant has also indicated that once mining is complete the pit floor
will slope to the southwest so that drainage may enter the wetland area if runoff occurs. The Division
anticipates that the operator will use Best Management Practices (BMP's), as necessary, to control runoff
and minimize sedimentation during mining and reclamation. Please respond.
6.4.12 EXHIBIT L -Reclamation Costs
Based on maximum volumes of 13,500 cy topsoil, 10,000 cy overburden, and 40,000 cy inert recyclable
materials to be stockpiled on site during mining and reclamation, the Division has calculated a total
reclamation cost of $57,100. This calculation is based on the assumption that the stockpiled excess
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey