APPCOR11016

• Permit No: C1981047
• IBM Index Class Name: Application Correspondence
• Doc Date: 11/17/1981
• Doc Name: MEMO BLUE RIBBON COAL MINE OCTOBER 1981 SUBMITTAL
• From: MLR
• To: TOM GILLIS
• Media Type: D
• Archive: No

•
STATE OF COLORADO RiC HnRD 0. IAMM. Govern nr
DEPARTMENT Of NATURAL RESOURCES
D. Monte Pascoe, Executive Director
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999
MINED LAND RECLAMA'T'ION
423 Centennial Building, 1313 Sherman Street
Denver, Colorado 80203 Tel. [phone]
David C. Shelton
Director
TO: Tom Gillis
M E M O R A N D U M
FROM: Jerry Zimpferl;.,x'
DATE: November 17, 1981
RE: Blue Ribbon Coal Mine (October, 1981 submittal)
I have completed a preliminary review of Blue Ribbon's latest submittal. The
review cannot be completed because it appears that the permit boundary has
been incorrectly identified. Comparison of Exhibit A with Exhibit C shows that
the permit area includes only the area of surface disturbance and does not in-
clude the area located above underground workings (See Rules 1.04(89,7)). The
applicant must revise all maps (and other appropriate sections of the permit)
to show the correct permit area before we make written findings for this permit
application.
The applicant has supplied surface water baseline information for Hubbard Creek.
However, to make the required written findings for Alluvial Valley Floors and
cumulative hydrologic effects, the applicant should provide estimates of average
flow and the mean annual yield from the watershed (or the percent of flow
contributed on an annual basis to flow in the North Fork of the Gunnison River).
If the permit boundary correction shows that other perennial streams are located
in or adjacent to the permit area, baseline data must be included for these
streams as well.
The applicant has not included a site-specific statement of the probable hydroloic
consequences of mining as required under Rule 2.05.6(3)(iv). The assessment
provided by the applicant (p. 120-123) was taken from the Colorado Westmoreland
application. Although it is appropriate to use other applications as a guide
for the analysis, the assessment itself must be a site-specific discussion of
the probable hydrologic consequences of the proposed mining activities. The
applicant should rewrite the statement of probable hydrologic effects to predict
during-operation and post-mining effects of their operation (including possible
subsidence effects) upon surface and groundwater.
The applicant has not supplied sufficient information for the Division to make
an alluvial valley floor determination. The information supplied is limited
to the incorrectly defined permit area. However, the Division is required to
make alluvial valley floor findings for the permit area and adjacent areas.