1999-08-23_GENERAL DOCUMENTS - C1981017

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Date: 8/23/1999
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1313 Sherman St., Room 215
Denver,Colorado 80203 tMl
I ON OF
Phone:[phone] E R A L S
FAX.[phone] &
GEOLOGY
RECLAMATION
MINING-SAFETY
DATE: July 15, 1999 Bill Owens
Governor
TO: Interested Contractors Greg E Walcher
Executive Director
FROM: Steve Renner Michael B.Long
Division Director
RE: Amendment No. 1,Coal Basin Mine/Facilities Area Reclamation,PKA-0-449
1. A revised Bid Schedule is attached.
2. Map 3,Project Area,was distributed at the Pre-Bid Meeting.
3. The Time of Completion will be forty-five(45)calendar days. The date of completion will be October 16,
1999.
4. Task 2,Demolition: Concrete buried at the refuse disposal area shall be covered by no less than three feet
(3')of refuse material when disposal is complete.
5. Task 4,Road Grading:The Upper Sutey Access Road will not be reclaimed. The Lower Sutey Access
Road shall be reclaimed in two(2)segments, Segment 1,which is the lower half of the road(from the
intersection of the Main Sutey Access Road and Lower Sutey Access Road to the first switchback)and
Segment 2,which consists of the upper half of the road(from the first switchback to the end of the road).
Each roau segment will be reclaimed to the following specifications:
Segment 1: This road segment will be backfilled so that the fill excavated from the outer portion of the
roadway is filled against the inside road cut to a depth of four feet(4'). The backfilled slope created
during this cut and fill operation shall not be steeper the 4H:1V. The cut and fill areas will be topsoiled
(see Task 9,Topsoil Application and Surface Roughening),severely roughened and revegetated(Task 10,
Revegetation). It.is estimated that three(3)corrugated metal culverts are located on this road segment.
All culverts encountered along this road segment shall be excavated and removed from the site for
disposal by CONTRACTOR at a licensed facility. The culvert excavation shall be backfilled and
compacted prior to initiation of cut and fill operation.
Segment 2: This road segment will be backfilled so that the fill excavated from the outer portion of the
roadway is filled against the inside road cut to a depth of ten feet(10'). The backfilled slope created
during this cut and fill operation shall not be steeper the 3H:1V. The cut and fill areas will be topsoiled
(see Task 9,Topsoil Application and Surface Roughening),severely roughened and revegetated(Task 10,
Revegetation). Access to this road segment from the Ditch 8 corridor, located immediately downhill from
the upper most portion of the road,will not be available.
6. Task 8, Earth Work: It is estimated that 5,485 cubic yards of dirt will be placed on the coal refuse prior to
placement of topsoil.
7. Task 8,Earth Work: As noted in the Bid Document, some demolished concrete exists on the surface of
the north facing slope behind the coal refuse. It is probable that an additional,unknown volume of
concrete debris is located under the exposed concrete,or immediately under the exposed dirt on the
hillside. This material,when encountered,will be excavated and disposed of as require in task 2,
Demolition.