2008-05-21_PERMIT FILE - M2007087

• Permit No: M2007087
• IBM Index Class Name: PERMIT FILE
• Doc Date: 5/21/2008
• Doc Name: Adequacy Review 02
• From: DRMS
• To: Environment, Inc.
• Email Name: DB2
• Media Type: D
• Archive: No

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]
May 21, 2008

COLORADO
D IV IS I ON OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Mr. Stevan L. O'Brian, President Executive Director
Environment, Inc. Ronald W. Cattany
798 ante rive, Suite 205A Division Director
Arvada, CO 80003 Natural Resource Trustee
Re: Albert Frei and Sons, Inc. - Priola Pit, New 112 Application, Permit No. M-2007-087_
Adams County; Adequacy Review 02 1
Dear Mr. O'Brian:
The Division of Reclamation, Mining, and Safety (DRMS) has completed Adequacy Review 02 for the
Priola Pit, New 112 Application, Permit No. M-2007-087. Listed below is the additional information we
require in order to process the application.
Be advised that the applicant must provide the required information in time for the Division to review and
provide a recommendation for approval or denial to the Mined Land Reclamation Board by Tuesday, May
27, 2008 (three working days prior to the pre-hearing conference, per Rule 1.4.9(2)(c).). If the required
information is not provided within that timeframe, the Division will be forced to recommend to the Board
that the application be denied.
Rule 3.1.6 Water - General Requirements
I ) For your clarification, DBMS does not consider it necessary to abandon the 12-foot deep well, as cross-
communication between aquifers should not be a concern for such a shallow completion. Therefore,
simply removing the well will suffice. Additionally, it the integrity of the deeper wells is not
compromised by mining activities, then simply mining around the deeper wells would be adequate in
lieu of abandonment.
2) Applicant has provided no technical data to back up the statement that there will be no major impacts to
the ground water system. Aquifer tests can be performed to assess aquifer characteristics, and lacking
data for future fill material, estimates can be made of hydraulic conductivity. Considering the proximity
of this mine to a water resource considered very important to the City of Thornton, it is the
responsibility of the applicant to provide an adequate characterization of the ground water system.
Rule 6.4.4 Exhibit D - Minin-g Plan
Please indicate the source of your information regarding the nature of the stratum immediately beneath
the material to be mined.
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines