2011-01-21_REVISION - C1980004

• Permit No: C1980004
• IBM Index Class Name: REVISION
• Doc Date: 1/21/2011
• Doc Name: Adequacy Review & Comments
• From: Joe Dudash
• To: Mike Boulay
• Type & Sequence: PR2
• Email Name: MPB
• Email Name: JJD
• Email Name: SB1
• 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: (30&106 January 21, 2011
TO: Mike Boulay
FROM: Joe Dudash .J"t
RE: McClane CaniVdn'Mine, Permit No. C-1980-004, McClane Canyon
Mining, LLC.
COLORADO
D I V I S I ON OF
RECLAMATION
MINING
SAFETY
John W. Hickenlooper
Governor
Mike King
Executive Director
Loretta E. POeda
Director
I have finished my adequacy review of the Permit Revision No. 2 submittal for the McClane Canyon
Mine. The following are my questions and comments:
1. On revised page 2.05-22, it is stated in Section 2.05.3(4)(a)(ii)(C) that the sediment in the pond
must be removed before the pond is 60% full of sediment. Please revise this sentence to read
that the sediment will be removed before the sediment level reaches 60% of the pond's
maximum sediment level.
2. On revised page 2.05-24, there is a discussion concerning sediment control at drill pads.
However, there do not appear to be Sedcad designs showing that the sediment control
structures will function properly. Please provide such Sedcad designs or show where in the
permit these designs can be found. Also, please reference the location of the designs in the text.
3. On revised permit text page 2.05-63, reference is made to Map 8 for the hydrologic monitoring
locations. Please change this reference to Figure 4.2-2.
4. The surface water monitoring plan proposed in PR-2 does not match the currently approved
surface water monitoring plan. On revised permit text page 2.05-63, it is stated that the surface
water monitoring stations SW-1, SW-4 and SW-8 are to be sampled quarterly for field
parameters and semi-annually for the full suite parameters. However, as stated on approved
permit text page 4-20, SWA and SW-8 are to be sampled quarterly for the full suite analyses and
for flow. Concerning SW-4, however, it is not clear to the Division if SW-4 is currently part of the
McClane Mine monitoring program.
As also stated on page 4-20, SW-2 and SW-5 are to be sampled twice a year for the full suite
parameters, one time during spring snow melt and one time during a storm event in the spring
or summer. Flow is to be measured at SW-2 in addition at SW-1 and SW-8.
Please justify the change in the surface water monitoring program or revise the PR-2 submittal
to conform to the currently approved monitoring program. The Division also requests that flow
be added to Tables 1 and 2 on revised pages 2.05-64 and 65.
5. On revised page 2.05-66, it is stated that water monitoring results will be submitted to the
Division annually. However, the currently approved submittal process, as stated on permit
application page 4-20, states that the quarterly sampling results will be submitted to the
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines