PERMFILE69336

• Permit No: M2002004
• IBM Index Class Name: Permit File
• Doc Date: 12/20/2002
• Doc Name: Decision Letter with conditions
• From: DMG
• To: GCC Rio Grande Inc
• Media Type: D
• Archive: No

~~ ~~;
pIVISION OF MINERALS AND GEOLOGY/
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Coloradq 80203
Phone: [phone]
FAX: [phone]
December 20, 2002 ~
Mr. Brian McGill ~
GCC Rio Grande, Inc.
11783 State Hwy. 337
Tijeras,NM 87059

STATE OF COLORADO
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION
MINING•SAFETY
Bill Owens
Governor
Greg E. Watcher
Executive Director
/ Ronald W. Cattany
/ Acting Division Director
Re: File No. M-2002-004, Red Rock Plant & Limestone Mine, 112c Decision Letter - Condihons,
Financial and Performance Warranty Request -Construction Material Operation
Dear Mr. McGill:
On August 21, 2002, the Colorado Mined Land Reclamation Board approved your 112c mining permit application
with conditions. Since there were objections to the application, the mailing date of the Board Order started the
appeal deadline. The last date for appeal expired on December 9, 2002 and our office has not received any
information indicating that an appeal or request for reconsideration was filed. Therefore, your application approval
is considered final. The conditions to the approval aze noted below:
('nnditinn #1: Raseline Water (luality Samnlinv
Baseline ambient groundwater conditions of the potentially affected aquifers shall be established
through sampling during a minimum of five quarters prior to mining.
Aquifers to be sampled shall include, but not necessazily be limited to, the St. Chazles River alluvial
aquifer and the Dakota aquifer. During and afrer drilling of the supply well into the Dakota aquifer, logs of
those wells shall be examined to determine if water was encountered in the Codell Sandstone. Provided that
water is encountered in the Codell Sandstone, that unit shall also be monitored.
Groundwater samples shall be collected and analyzed from a minimum of eight sepazate events over a
time span of at least five quarters. DMG recommends sampling on a monthly basis for 24 months prior to the
beginning of mining.
Except as noted hereafter, all samples collected during the baseline water sampling program shall be
analyzed for the parameters listed in Tables 1, 2, 3 and 4 of the Colorado Department of Health and
Environment Water Quality Control Commission, Regulation 41, Basic Standards and Methodologies for
Groundwater. At the operator's discretion, groundwater samples need not be analyzed for the following: total
coliforms, CN (free), chlorophenol, color, corrosivity, foaming agents, and phenol. In addition to parameters
listed in the previously named tables, with exceptions, all samples shall be analyzed for ammonia. Samples
shall be analyzed by such methods so as to produce results with detection limits lower than the regulated value.
Upon adequate completion and submittal of baseline water quality sampling results, the Division shall
establish the following:
A) A list of indicator parameters to be analyzed from subsequent sampling;
B) Numeric protection levels; and
C) Sampling frequency, all in accordance with groundwater regulations.
All monitoring wells shall be permitted by and constructed in accordance with the Office of the State
Engineer. In addition, the location of the wells must be submitted to and approved by the Division prior to
construction.
C:~ajwVNy Documeats~m-2002-004 decision letterl2-02.doc