2006-11-06_REVISION - M2001107

• Permit No: M2001107
• IBM Index Class Name: Revision
• Doc Date: 11/6/2006
• Doc Name: Adequacy Issues
• From: DRMS esc
• To: Northern Colorado Constructors, Inc. Aggregate Div
• Type & Sequence: TR3
• Media Type: D
• Archive: No

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STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
November 6, 2006
Mr. Chris Zadel r/
Northem Colorado Constructors, Inc. Aggregate Div.
9075 WCR 10
Ft. Lupton, CO 80621 /
RE: NCCI Pit #1, Permit No. M-2001-107
I/f'echnical Revision 03
Dear Mr. Zadel,
COLORADO
DIVISION O F
RECLAMATION
MINING
- &-
SAFETY
Bill Owens
Governor
Russell George
Enecu[ive Director
Ronald W. Cattany
Division DIfeLYOr
Natural Resource Trustee
On November 3, 2006, the Division met with Northern Colorado Constructors, Inc. Aggregate
Div. (NCCI) and JT Consulting, Inc. to discuss the submittal of Technical Revision 03 (TR-03).
Based on the discussion, the Division finds that the changes proposed by NCCI maybe
submitted as a technical revision to the permit. However, the following items need to be [/
addressed by the operator prior to approval of the revision;
In accordance with Rule 6.4.7(2)(b), the Division requests that NCCI identify and
characterize the aquifer to be mined in or through. The Division also requests that the
applicant define or predict the cone of depression expected for any azeas to be
dewatered and dry mined during the life of the operation. The cone of depression
assessment should define, at a minimum, the horizontal and vertical extent of
drawdown expected. If during the assessment, the applicant determines that a
drawdown will occur offsite that may impact a current groundwater user, the
applicant should explain any mitigation measures to be implemented and trigger
points that would put mitigation measures into effect.
2. Please discuss the mining phases for the site, and the acreage of affected land at any
given time. In particulaz, NCCI is currently approved to mine no more than 10 acres
that would cover one section or portions of two sections and with a total disturbance
at any time of 25 acres.
3. Please discuss the changes to the hydrologic balance from the current approved
mining and reclamation plan to the proposed plan in TR-03.
4. NCCI must provide surface use agreements for all utilities that will be mined through.
Until such agreements aze reached, NCCI must not mine within 200 feet of any
permanent man made structures.
5. During the initial adequacy review of the permit, NCCI committed to not mining
within 200 feet of a permanent man made structure until they have obtained
agreements with the owner(s) of the structures. Please provide the agreements in
Office of Office of
Mined Land Reclamation Active and Inactive Mines