REV15981

• Permit No: C1981041
• IBM Index Class Name: Revision
• Doc Date: 3/10/1994
• Doc Name: ROADSIDE AND CAMEO MINE C-81-041 TR 17
• From: DMG
• To: ERICA CROSBY
• Type & Sequence: TR17
• Media Type: D
• Archive: No

. _ III IIIIIIIIIIIIIIII
999
STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Depanmenl of Natural Resources
1313 Sherman SL, Room 215
Denver, Colorado 80203
Phone: [phone]
fAE: 13031 832-8106
March 10, 1994
~~
I~~
DEPARTMENT OF
NATURAL
RESOURCES
Roy Romer
Governor
To: Erica Crosby
From: Janet Binns
Re: Roadside and Cameo Mines (C-81-041):
Technical Revision No. 17
Ken Salazar
E~rcuevc Dueaor
Michael B. Long
Division DveUUr
I have had a chance to review Powderhorn's technical revision No. 17 for proposed locations
of borrow areas for refuse area cover. My focus on this review was topsoil salvage and
replacement (Rule 4.06). Items that 1 feel require more information or clarification from
the operator follow:
1. Cameo Borrow Area #1 (CBA #1) is shown on map 9A. The operator
approximates that 30,000 cu.yd. of cover material can be salvaged out of 2.7 acres in
this location. Map 9A does not show the maximum potentially disturbed area
boundary associated with this salvage. A map delineating the maximum disturbed
area should be provided by the operator.
2. Similarly, as in item No. 1, Cameo Borrow Area #2 (CBA #2) is depicted on map
52. This map does not show the maximum potential disturbance boundary either.
The operator needs to include a map that clearly represents the limits of the
maximum area that will be disturbed by salvaging approximately 65,000 cu.yd. of
material out of this 8.6 acre site.
3. On permit page 186c (which was last revised during TR-16) Powderhorn Coal
Company (PCC) committed to sampling the borrow areas at a frequency of 1 soil
sample per acre and sample at 2 ft. incremental depths. Pages XX-24 through XX-26
of the proposed revision indicate that CBA #1 had 1 soil sample taken for the 2.7
acre area, and CBA #2 had 4 soil samples taken for an 8.6 acre area. The operator
will need to collect a minimum of 2 additional soil samples for CBA #1 and S more
samples for CBA #2 to comply with [his commitment. Additional sampling will
better define the soil quality limitations. The operator needs to conduct this
additional sampling and receive results prior to excavation operations. These results
should be forwarded to the Division as well.