1996-10-15_GENERAL DOCUMENTS - C1981017

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 10/15/1996
• Doc Name: Bid Documents ‎(IMP)‎
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources PF r' t W,_
1313 Sherman St., Room 215
Denver,Colorado 80203
Phone:[phone]
FAX:[phone]
DEPARTMENT OF
NATURAL
DATE: May 31, 1996 RESOURCES
Roy Romer
TO: All Bidders on the Coal Basin Rock Tunnel Entry Project Governor
James S.Lochhead
Executive Director
FROM: Steve Renner, Project Manager Michael B.Long
Division Director
RE: Amendment Number 1 to PKA-6-372
Thank you for attending the Pre-bid meeting on May 24, 1996. A revised Bid Schedule and
a copy of the sign in sheet are attached. The following amendments and clarifications should
be incorporated into the Invitation for Bid:
1 . THE BID OPENING HAS BEEN CHANGED TO JUNE 11, 1996 at 2:30 p.m.
2. Under Task 5, Earthwork,the fine grained limestone material (rock dust) located at the
eastern portion of the project area near the fallen hopper, shall be removed and utilized
in the reclamation project. The area of the fallen hopper shall be lightly graded to
conform with surrounding topography. Coal fines located outside the entries shall be
pushed to the highwall and covered by other earthen materials.
3. Material needed for backfilling the highwall shall be excavated from the areas listed
below. Excavation will be accomplished in the following strict order. Excavation of
each area shall be completed prior to excavating from the next area:
1) Surface channel to be constructed;
2) North Fork Dutch Creek slopes;
3) Dutch Creek slopes downstream of the Waste Rock Dump culvert; and
4) Dutch Creek slopes upstream of the Waste Rock Dump culvert
4. Demolition of the fan housing foundation (above entries) is not required. The
foundation may be covered by four feet W) of earthen material,compacted in one foot
(1') lifts.
5. The slope of the highwall backfill may be constructed so that slopes are gentler (less
steep) than 2H:1 V. Compaction and other pertinent backfilling and demolition
specifications are unchanged.
6. The forty-eight inch (48") holes to be driven through the existing block walls within the
entries may be completed at any time during completion of the project. The tunnel
drainage must continue to flow unimpeded through the existing discharge system until
completion of the project.