APPCOR13223

• Permit No: C1981034
• IBM Index Class Name: Application Correspondence
• Doc Date: 1/13/1982
• Doc Name: GRAND MESA PERMIT APPLICATION RED CANYON MINE FN C-034-81
• From: MLR
• To: GRAND MESA COAL CO
• Media Type: D
• Archive: No

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DEPARTMENT OF NATURAL FESOURCES en4 III IIIIII IIIIIIIIII
D. Monte Pascoe. Executive Director 999
MINED LAND RECLAMATION
423 Centennial Building. 1313 Sherman Street
Denver, Colorado 80203 Tel. [phone]
David C. Shelton
Director
January 13, 1982
Mr. Larry Reschke
Grand Mesa Coal Company
P. 0. Box 226, Ist and Columbia
Delta, Colorado 82426
Re: Grand Mesa Permit Application - Red Canyon Mine
Our File No. C-034-81
Dear Mr. Reschke:
Portions of the Red Canyon mine application revision, submitted to the
Division on August 31, 1981, have been reviewed. As I have indicated
to you by phone,~significant problems still remain with respect to
surface and ground water and the impact of mining on alluvial valley
floors.
Hydrologic Balance: Surface Water (Rules 2.09.5, 2.09.7, 2.05.3(4),
2.05.6(3), and 9.05)
The following deficiencies have been identified and must be corrected
prior to permit approval:
1) The applicant's discussion of probable Hydrologic Consequences does
not include a discussion of possible surface water effects. Some surface
water effects would be expected because direct recharge from the stream
is expected to make up any water loss from the alluvial aquifer resulting
fmm mining. If this recharge occurs, surface flows should be decreased.
The applicant should expand the discussion of Probable Hydrologic Conse-
quences to include a quantitative assessment of effects on the quantity
of surface waters on a seasonal basis. Both Ward Creek and the irrigation
system could be affected.
2) Given the potential for affecting surface flow in ward Creek, the
surface water baseline provided by the applicant .is not adequate. Two
monitoring stations should be establisherl on tJard Creek shove and below
the permit area. These stations should be equipped with continuous flow
recorders. The applicant should also obtain flow information on major
irrigation ditches overlying the proposed underground workings. Permit
review may be suspended until the applicant provides data which identify
critical Sow flow and peak discharge rates of streams sufficient to
identify seasonal variations.

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