PERMFILE58047

• Permit No: M2004017
• IBM Index Class Name: Permit File
• Doc Date: 4/19/2004
• Doc Name: 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]
April 19, 2004
Mr. Stevan L. O'Brian
Environment, Inc.
7985 Vance Drive, Suite 205A
Arvada, CO 80003
RE: Adequacy Review Comments - Kattenberg Pit, Regular 112 Application
File No. M-2004-017. Class: Permit
Deaz Mr. O'Brian:
COLORADO
DIVISION O F
MIN SRALS
GEOLOGY
RECIAMATION•MINING
SAFETY•SCIENCE
Bill Owens
Governor
Russell George
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Tmstee
Listed below aze adequacy review comments on the above-captioned Regulaz 112 Application. The
decision date for your application is scheduled for June 7, 2004. Therefore, I would appreciate a response
from you on or before May 19, 2004. (Your response should include two (2) copies). Any comments that
we receive on your application during the public comment period will be forwazded to you. Please be
advised that your application maybe 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 -Minim Plan
1. The applicant has specified that where excavation occurs within two hundred (200) feet of a permanent
man-made structure such excavation will occur at the final slope configuration (ie: 3:1) so as to eliminate
any chance that these structures will be affected by mining. Accordingly, this specification will become an
enforceable component of the mining and reclamation plan and must be adhered to at all times throughout
the life of the operation. Please respond.
2. The applicant has specified on page 12 that the average depth of salvageable topsoil is 6 to 8 inches and
the average depth of overburden is 24 to 60 inches. Based on the total disturbance expected (33.39 acres)
and the acreage of existing disturbance (5.05 acres) it appears there will be 28.34 acres to be stripped of
salvageable topsoil and of overburden. Please verify if this acreage is correct. If not, please clarify the
acreage to be stripped of topsoil and of overburden.
3. In conjunction with Items 2 & 4, please quantify the maximum volume of overburden, inert materials,
and of topsoil to be stockpiled at any one time.
4. The applicant has stated on page 12 that some imported inert material will be imported fcr 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 demonstrate requirements (a) through (f) of
Rule 3.1.5(9). These items maybe incorporated into this permit application. Please respond.
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey