HYDRO31481

• Permit No: M1980244
• IBM Index Class Name: Hydrology
• Doc Date: 9/8/1997
• Doc Name: CARLTON PROJECT PN M-80-244 REQUIRED SUBMITTAL PROPOSING NUMERIC PROTECTION LEVELS & POINTS OF
• From: DMG
• To: CRIPPLE CREEK & VICTOR GOLD MINING CO
• Media Type: D
• Archive: No

• • iii iiiiiiiiiiiiiiii
999
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Deparlmenl of Natural Resources
1313 Sherman 51., Ruom ?1 5
Dem~er, Colorado HO'03
Phone: 1303) &66-3567
FA%: 1303) H3?-8106
September 8, 1997
Mr. John Hardaway
Manager Environmental Affairs
Cripple Creek & Victor Gold Mining Company
P.O. Box 191
Victor Colorado, 80860
RE: Carlton Project (Permit Number M-80-244) Required submittal proposing numeric
protection levels and points of compliance for ground water.
Dear Mr. Hazdaway:
I~~~~
DEPARTMENT OF
NATURAL
RESOURCES
Roy Romer
Governor
lames S. Lochhead
E~eculrce DueUOr
Michael B Long
Dieision Director
The Division has been trying to resolve the above issue with CC&VG for the past few months
with no apparent resolution to date. On December 28, 1994, when the Division approved
Technical Revision number 10, the following condition was placed on the approval letter.
"The ground water quality data submitted by CC &VG can and will be used by the Division to
define ambient water quality, up to the date on which processing fluids aze introduced into the
facility. After that date the uses of subsequently collected samples water quality results to
delineate baseline water quality may be suspect. Therefore, it is preferable that any additional
data desired by the operator for possible use in determining "Ambient Water Quality"be
collected, if possible, prior to the application of processing Fluid to the leach pad."
The Division has adequate water quality data to properly place numeric protection limits to all
the monitoring wells in Arequa and Wilson Gulch. In consideration of CC&VG's commitment,
in its recent letter dated August 19, 1997, to expeditiously undertake measures " .. to I) define
the cause and extent of the adverse change attributable to CC &VG's operation and 2)mitigate
the adverse change that interferes with reasonable use of ground water ", the Division will assign
appropriate numeric protection levels, IE. Permit conditions ,and points of compliance for the
Wilson Gulch\Bateman Creek area of the mine on September 29, 1997.
In the Division's letter to you on May 28, 1997, following a meeting at the mine on May 14,
1997, you were advised that the Division's concerns regarding the possible impacts of the
Carlton project on ground water included the Ironclad-Globe Hill azea of the mine. It was
mentioned in that letter that the Division did not have groundwater quality or depth data for
monitoring wells that CC&VG is known to monitor in that azea and that such data together with
water quality data for the Moffat Tunnel was requested. Since CC&VG has not responded to that