_GENERAL DOCUMENTS - C1981017 ‎(231)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎ 1998 Correspondence
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY pimp,
Department of Natural Resources
1313 Sherman St, Room 215
Denver,Colorado 80203
Phone-[phone]
FAX.[phone] VOON
DEPARTMENT OF
NATURAL
September 17, 1998 RESOURCES
Roy Romer
Governor
MEMO
James S Lochhead
Executive Director
TO: Cheryl Linden - Michael B Long
Division Director
FROM: Steve Renner..f.
RE: Dutch Creek Diversion Project
The Dutch Creek Diversion Project is scheduled to begin on October 1, 1998. The purpose of
this reclamation project is to construct a naturally functioning stream to replace the failing Dutch
Creek Flume. The flume is deteriorating on a yearly basis, and will fail in the future. Such a
failure may cause Dutch Creek to flow through old coal refuse, thus resulting in degradation of
the quality of Coal Creek and of the Crystal River. To avoid this risk, the Diversion Project will
result in creation of a permanent, stable stream channel in a location which approximates the
original position of Dutch Creek before it was routed through the flume structure. A 404 permit
has been issued by the Army Corps of Engineers for construction of the new channel.
The Diversion will be constructed in the vicinity of the former Wash Plant location. Runoff
water from the Wash Plant vicinity and adjacent areas currently flows to the 001 pond system.
The 001 pond, which discharges to Coal Creek immediately below its confluence with Dutch
Creek, is addressed by an active NPDES permit held by Mid-Continent Resources.
Construction of the Dutch Creek Diversion will result in a bisection of the 001 pond contributing
area. The portion of the 001 pond contributing area located to the east of the planned Dutch
Creek Diversion will continue to report to the pond system. The area west of the Diversion, and
drainage from a portion of Road A for a distance of about 300 feet above the Wash Plant, will no
longer report to the pond. This drainage will report to Dutch Creek within the newly constructed
channel, as routing of the water generated from this area to the 001 pond will no longer be
possible.
Drainage from the area west of the Diversion which would have reported to the 001 pond will be
treated and released into Dutch Creek as non-point sources using a variety of best management
practices. Silt fencing will be constructed adjacent to and parallel with the Dutch Creek
Diversion in order that sediment is not transported from the site. Up-gradient of the silt fence
two to three long, shallow excavations may also be constructed. The excavations will be
constructed so that the eastern bank or margins are constructed on-grade so that water may flow