REP50021

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 12/27/1995
• Doc Name: MEMO-PRE-MEETING NOTES FOR 1-8-96 MEETING TO DISCUSS GROUND WATER ISSUES-HOMESTAKE MINING CO
• From: DMG
• To: FILE
• Media Type: D
• Archive: No

~ III IIIIIIIIIIIIIIII
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Depanmem of Natural Resources
131 3 Sherman 81., Ruom 21 S

Denver, Culurarlu 80207 II~~~~
Phone: [phone]
FAX. [phone]'_8106
DEPARTMENT OF
NATURAL
RESOURCES
Roy Romer
Governor
DATE: December 27, 1995 lames S. Lochhead
Enecurive Director
TO: File M-77-215 Michael B. Long
A
/
/ G Division Dirxtar
FROM: Allen Sorenson
_,;
j
l
RE: Pre-Meeting Notes for 1/8/96 Meeting to Discuss Ground Water
Issues, Homestake Mini ng Company, Bulldog Mine, Permit No. M-
77-215
1. Board Order dated 8/24/95 directs the Division to reconsider
requirement for ground water investigation and characterization
study. The Board Order further directs the Division to confer with
Homestake Mining Company (HMC) and devise a method of complying with
appropriate water law.
2. The Division of Minerals and Geology (DMG) met with the Water
Quality Control Division (WQCD) on December 9, 1994; discussions
during this meeting included approaches to coordinate the two
Division's efforts to resolve water quality issues at the Bulldog
Mine. It was agreed that the type of ground water information that
would be required for DMG to establish numeric protection levels and
points of compliance for ground water, would be essentially the same
information that WQCD would need to evaluate the potential for
surface water quality impacts that may be caused by the Bulldog
Mine. WQCD and DMG agreed that DMG would implement the ground water
regulations of Rule 3.1.7 (Mineral Rules and Regulations of the
Mined Land Reclamation Board) at the Bulldog Mine, and would share
information with WQCD so that the potential for surface water
impacts could be evaluated by WQCD. HMC was notified of the nature
of the discussions between DMG and WQCD in a letter from Dave Holm
dated 12/19/94. Since the Mined Land Reclamation Board has directed
the DMG to reconsider any requirement to implement a ground water
characterization study at the Bulldog Mine, DMG has decided not to
pursue any characterization of the potential for ground water
impacts that may have been caused by underground mining activities
or by the underground disposal of mill tailing. WQCD has been
notified of DMG's current position, and, as such, WQCD will become
the lead agency in the assessment of ground water impacts related to
flooding of the underground workings in terms of the potential for
mine pool water to discharge to surface water. Two potentially
impacted receiving basins are Willow Creek (via Windy Gulch or