ENFORCE20305

• Permit No: C1994082
• IBM Index Class Name: Enforcement
• Doc Date: 8/12/2004
• Doc Name: Assessment Conference ‎(Interoffice Memo)‎
• From: Mike Boulay
• To: Jim McArdle
• Violation No.: CV2004002
• Media Type: D
• Archive: No

STATE OF COLOIZ~DO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
INTEROFFICE MEMORANDUM
COLORADO
DIVISION OF
MINERALS
GEOLOGY
RECLAMATION•MINING
SAFETY•SCIENCE
TO: Jim McArdle
Bill Owens
Governor
Russell George
Executive DIreCYOr
FROM: Mike Boulay /~/~ ~ Ronald W. Cottony
Division Director
DATE• August 12, 2004 Natural Resou¢e rmitee
SUBJECT: Yoast Mine Permit No. C-94-082. Assessment Conference for NOV CV-2004-002
Seneca Coal Company (SCC) has requested an assessment conference for Notice of Violation CV-
2004-002 issued to SCC for the Yoast Mine in Routt County. C V-2004-002 was issued on June 30,
2004 for significant erosion and gully formation noted in the Armand Draw drainage from Culvert
YB-6 to Pond 010, and for sediment clogged culverts YB-6 and YB-1. This violation is very similar
in nature to NOV-CV-2003-006 written 11 months prior for the North Pit drainage azea. A brief
summary of the regulatory background and violation follows. A detailed description of the violation
area is provided in the attached inspection report dated 6/30/04. The assessment conference will be
held at the DMG office on Tuesday August 24, 2004 at 1:00 p.m. I am requesting that you attend the
meeting and function as the Assessment Officer.
Reaulatorv Back rp_ ound
The regulations pertaining to the violation area as follows:
Rule 4.03.1(4) and 4.03.3(4) -Haul Road and Light-Use Road Drainage
Each haul road shall be designed and maintained to have adequate drainage including culverts and
bridges. The water control system shall be designed to safely pass peak runoff from a 10-year, 24-
hour precipitation event.
Light-use roads planned to be used for a period of more than 6 months shall utilize culverts designed
to safely pass the 10-yeaz, 24-hour precipitation event or longer as specified by the Division.
Culvert YB-6 provides the stream crossing at Armand Draw for the light-use road accessing the
North Pit. Culvert YB-1 conveys runoff from Haul Road B to a ditch below Pond 010.
Office of Office of Colorado
Mined Land Reclamation Active and Inactive Mines Geological Survey