1998-08-12_REVISION - M1977493

• Permit No: M1977493
• IBM Index Class Name: REVISION
• Doc Date: 8/12/1998
• Doc Name: Discussion
• From: Climax
• To: DMG
• Type & Sequence: SR2
• Media Type: D
• Archive: No

AUG-.12-98 WED 17: 18 P. 05/06
Mr.Allen Sorenson_wo
Page 4
August 12.1998
• If an exceedence of a water quality standard is measured in the release from the Eagle Park
Reservoir, weekly monitonng shall commence at a location downstream of the confluence
between the reservoir release and the Eagle River, for the parameter(s) which was
exceeded. If an exceedence is noted at the downstream monitoring location for the same
Parameter(s) for two consecutive tests, DMG will be notified and Climax will take the
necessary measures to determine the source of the exceedence. This may include
monitoring the reservoir outlet, monitoring within the reservoir, verification that the cut-off
systems are properly functioning, monitoring upstream of the reservoir, and Other appropriate
locations to determine the potential source.
• Weekly monitoring will continue at the outlet of the Reservoir and downstream of the
confluence of the Eagle River until it can be demonstrated that no exceedences are occurring
which may be caused by the Eagle Park Reservoir delivery or until water quality standards
are met for 2 consecutive weeks.
• Any two consecutive exceedences of the chronic aquatic life water quality standards at the
down stream point on the Eagle River shall result in an immediate reduction of discharge flow
sufficient to result in an in-stream water quality that meets the water quality standards of
Segment 3 of the Eagle River. If there is sufficient reason to believe that an emergency
condition exists related to aquatic life in the Eagle River, based either on the water quality
data observations or the condition of the aquatic life itself, the DMG may require Climax to
immediately reduce or discontinue discharge from the Eagle Park Reservoir such that the
water quality standards will be met.
• If it is determined that the source of the problem is related to sources upstream of the
reservoir, or mining materials in the reservoir, Climax Molybdenum Company, will restore, as
quickly as practicable, operational controls on the Eagle Park Reservoir or the approved
Climax Environmental Protection Facilities to prevent further exceedences. based on mutual
agreement by the Division of Minerals and Geology and Climax, alternative methods of
addressing the cause of the exceedences other than restoration of operational controls can
be implemented.
Condition No. 3
If there are no water quality standard exceedences, analytical results obtained during periods'of water
delivery from Eagle Park Reservoir will be submitted to the DMG and the WQCD Within 30 days after
water delivery is complete for the calendar year.
A report that summarizes the results of the three-year monitoring program will be submitted to the
Division of Minerals and Geology and WQCD no later than 60 days following receipt of the results of
the last sample.
Climax Molybdenum will notify DMG verbally or via facsimile within five (6) business days of the
receipt of results that show an exceedence of an in-stream water quality standard in the East Fork of
the Eagle River or determination that the reservoir is the source of an exceedence. Copies of such
analysis will be forwarded to the DMG within ten (10) business days of receipt.
Condition No. 4
Climax understands that additional conditions to approval of SR-002 require the removal of inert
debris from below the high water mark of the reservoir and diversion of water from the steep slopes
on the reservoir's southern shore prior to final acceptance of the Application for Reduction of
Warranty. Climax understands that these items will be subject to a future inspection by the DMG.
Climax reserves the right to object to any additional requirements as specified by the MLRA.