ENFORCE30248

• Permit No: C1981018
• IBM Index Class Name: Enforcement
• Doc Date: 7/14/1993
• Doc Name: Memo to file
• From: DMG
• To: DESERADO FILE NOV C-93-103
• Violation No.: CV1993103
• Media Type: D
• Archive: No

• • iii iiiiiiiiiiiuiu
STATE OF COLORADO
V
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman 51.. Room 215
Denver, CO 80203
Phone: (}0}) 866}567
FAX: [phone]
DATE: July 14, 1993
TO: Deserado File
NOV C-93-103
FROM: Erica Crosby
pF COQ
~~ r~
~~:~
..~~
~~B l6 ~•
Rey Romer
Governor
M¢hael B. Long
Drvis~on Dneclrn
On July 1, 1993 the Division of Minerals and Geology wrote Notice
of Violation C-93-103 to the Deserado Mine. The nature of the
violation was twofold:
1. Failure to follow the approved mine plan by failing to
place excess spoil in. a controlled manner and concurrently
compacting as necessary to ensure mass stability and prevent mass
movement (4.09.1(7))
2. Failing to divert surface runoff from the fill surface to
stabilize channels of the fill (4.09.2(7))
The inspection was conducted by Erica Crosby and Larry Routten of
DMG on June 24, 1993. The main emphasis on the inspection was to
inspect the three refuse piles located in the Deserado permit area
(RD-l, RD-2-3, RD-4).
Refuse pile 2-3 contained an undetermined volume of stockpiled
refuse material (yet to be spread or compacted). According to the
operator and the previous DMG inspector Janet Binns, the refuse
material is placed on top of the refuse pile in order for it to dry
before spreading and compacting. Because this was a wet year and
the fact that the mine was producing more refuse material than
normal, large piles were placed on RD 2-3 in order to be dried
(piles were 10-15 in height). This material has been stockpiled
since the winter months (See marked slides). Because there is far
more stockpiled refuse material on RD-2-3 than could be spread, the
mine has to haul some of the material to RD-4 to be spread and
compacted on that pile. This has turned RD-2-3 into a refuse pile
dump where the material is dried rather than being concurrently
spread and compacted.
The Deserado mine plan states that:
"refuse is dumped in an area and spread into layers 2"
thick to dry. After drying refuse is built into layers
not exceeding 2 feet and compacted to 90% density" (IV-
29).