2012-01-11_PERMIT FILE - M2011054

• Permit No: M2011054
• IBM Index Class Name: PERMIT FILE
• Doc Date: 1/11/2012
• Doc Name: Preliminary Adequacy Review
• From: DRMS
• To: Oldcastle SW Group, Inc.
• Email Name: THM
• Email Name: SSS
• Media Type: D
• Archive: No

DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
January 11, 2012
Peter J. Siegmund
Oldcastle Southwest Group, Inc. d.b.a. United Companies
2273 River Road
Grand Junction, CO 81502
Dear Mr. Banks:
Mined 1 and Reclamation
STATE OF COLORADO
COLORADO
D I V I S I O N O F
RECLAMATION
MINING
— &—
SAFETY
John W. Hickenlooper
Govemor
Mike King
Executive Director
Loretta E. Pineda
Director
Re: Debeque Sand and Gravel Resource, Application No. M- 2011 -054, Preliminary Adequacy
Review of 112 Construction Materials Reclamation Permit Application Pac kag
The Division of Reclamation, Mining and Safety has begun the review process for the above referenced
112 Construction Materials Reclamation Permit Application. A review of the application has revealed a
few clarifications and issues that need to be addressed.
1) In accordance with Rule 6.4.7(2)(b), the Division requests that the applicant 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 areas to be dewatered. The cone of depression and assessment of
other effects should define, at a minimum, the horizontal and vertical extent of expected impacts. If
during the assessment, the applicant determines that a drawdown effect 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 cause mitigation measures to be put into effect. The
Applicant will also need to establish a baseline for the current groundwater levels through at least 5
quarters of groundwater level measurement.
2) The applicant should be aware that Rule 3.1.6 (1) of the Construction Material Rules and
Regulations require that disturbances to the prevailing hydrologic balance of the affected land and
to the surrounding area and to the quantity and quality of water in surface and groundwater systems
both during and after the mining operation and during reclamation shall be minimized. In that the
proposed operation includes dewatering of the pits, the potential for impacts to groundwater exists.
Please indicate how the hydrologic balance of groundwater in and around the permit site will be
monitored.
3) Please clarify where water from the mine will be discharged and provide a singed affidavit that
indicates that the operator has consent to discharge water into the proposed water conveying
structure.
4) Per Rule 6.4.4(0 (ii), please identify the nature of the stratum that lies immediately beneath the
deposit to be mined. It is stated that the underlying stratum is shale bedrock. Please specify the
type of shale that exists beneath the proposed operation.
5) Please supply the Division a copy of the well permit or well permit number of the well permit
obtained for the proposed mining operation.
Office of Office of
Denver • Grand (unction • Durango Active and Inactive Mines