REV90137

• Permit No: C1981014
• IBM Index Class Name: Revision
• Doc Date: 3/22/2002
• Doc Name: Letter & Application
• From: DMG
• To: Energy Fuels Coal Inc
• Type & Sequence: MR42
• Media Type: D
• Archive: No

energy fuels coal, inc. ~
southiield mine post office box 459 florence, Colorado 81226 [phone] Phone [phone]
fax 7t9-784-4352
March 18, 2002
Mr. Jim Stark
Division of Minerals and Geology ~~A
1313 Sherman Street, Room 215 '~'-A'H2~~'2~2
Denver, Colorado 80203 °tMbS(gBrP6 (
P'~fIPiE~~~Q~~'~eu99~v
RE: Request for Approval of a Minor Revision (MR-42):
Disposal of Coal Fines and Pond No. 1 Watershed Containment
Response to Mid-Term Review Items Nos. 10, 20, 23, 25, and 27
Southfield Mine, Permit No. C-81-014
Deaz Jim:
With this transmittal letter and its attachments, Energy Fuels Coal, Inc (EFCI) requests approval of
Minor Revision No. 42 (MR-42), pertaining to disposal of coal mine waste material from the
facility azea, and containment of runoff from the Pond No. 1 watershed during backfilling
operations.
The above items are concerns raised in the Division's Mid-Term Review, shown as question
numbers 10 and 27. In addition, EFCI hereby submits responses to question nos. 20, 23, and 25 of
the Mid-Term Review. Following are responses to the Mid-Term Review questions (in comment-
response format) subject to this minor revision:
10. With the elimination of pond 1 fur use as a sediment control device, please provide a plan
for how runofffrom the sediment pond 1 watershed will be contained during bacldilling and
regrading of the facilities area to prevent offsite impacts. Please provide text and SEDCAD
demonstrations as necessary.
Response:
Pond 1 is an incised pond, without an embankment, sized to fully contain the runoff from a
24-hour, 25-year storm event. The existing surface azea to the east (downstream direction)
of the pond area is higher than the crest of the pond, and higher than the facility yard area
to the west of the pond. The elevations aze shown on Map 18, Mine Facilities.
When Pond 1 is completely backfilled, any runoff within the Pond 1 watershed will flow
from the existing location of Pond 1 towazds the west and into the limits of the Pond 5
watershed. This flow direction for runoff from the Pond 1 watershed area is consistent with
that shown for the post-mining configuration on Map 28, Mine Area Post-Mining
Topography. Therefore, because of the existing topography, any runoff from the Pond 1
watershed occumng after backfilling Pond 1 will be contained within Southfield's drainage
and sediment control system.