_GENERAL DOCUMENTS - C1981017 ‎(292)‎

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

Upon completion of backfilling, grading and drainage construction, the bench remnant shall
be ripped to a depth of eighteen (18) inches.
Measurement and Payment
There will be no measurement for payment for excavation, placement of backfill materials,
grading and ripping. Payment for these portions of Task 4 will be reflected in a lump sum bid
under Task 4 on the Bid Schedule. This lump sum bid will cover all costs for excavation and
placement of the bench outslope materials, placement and compaction of the fill at the base
of the highwalls, final grading of the bench, cut and fill area outslopes, and ripping of each
area. Payment shall be as this task is completed and approved by the PROJECT MANAGER.
TASK 5 SURFACE DRAINAGE
Task 5 includes approximately 3050 linear feet of constructing contour furrows for surface
drainage at the different project areas, as described below. An additional drainage
construction must be approved by the PROJECT MANAGER and will be paid under Task 8.
Task 5a - Mine 3 Bench
Seven (7) contour furrows will be constructed at the Mine 3 Bench remnant after backfilling
of the highwall is completed and prior to ripping. The furrows will be trapezoidal in shape,
with a bottom width of (2) feet. Each furrow will be a minimum of eighteen (18) inches deep
as measured from the base of the furrow to its crest. Side slopes will be no steeper than
2H:1 V (Cross Section 1 , Generalized Cross Section of Furrows). The locations of the furrows
will be staked in the field by the PROJECT MANAGER prior to construction. Approximately
2,250 lineal feet of furrows will be constructed at the Mine 3 bench area.
Task 5b - Mine 3 Intermediate Coal Transfer Area
Four (4) contour furrows will be constructed at the Mine 3 Intermediate Coal Transfer Area
after backfilling of the highwall is completed and prior to ripping. The furrows will be
trapezoidal in shape, with a bottom width of (2) feet. Each furrow will be a minimum of
eighteen 0 8) inches deep as measured from the base of the furrow to its crest. Side slopes
will be no steeper than 2H:1 V. (Cross Section 1 , Generalized Cross Section of Furrows). The
locations of the furrows will be staked in the field by the PROJECT MANAGER prior to
construction. Approximately 200 lineal feet of furrows will be constructed at the Mine 3
Intermediate Coal Transfer Area.
Task 5c - Mine 3 Lower Bench Area
Four (4) contour furrows will be constructed at the Mine 3 Lower Bench Area after backfilling
of the highwall is completed and prior to ripping. The furrows will be trapezoidal in shape,
with a bottom width of (2) feet. Each furrow will be a minimum of eighteen (18) inches deep
as measured from the base of the furrow to its crest. Side slopes will be no steeper than
2H:1 V. (Cross Section 1 , Generalized Cross Section of Furrows). The locations of the
furrows will be staked in the field by the PROJECT MANAGER prior to construction.
Approximately 600 lineal feet of furrows will be constructed at the Mine 3 Lower Bench Area.
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