A#1- REVISED Bid Schedule_Cottonwood Mine Closure_796.pdf
PDF 135 KB Posted
- Attached to
- PKAA, Cottonwood Mine Closure Project
- Solicitation number
- DQ1 PKAA 2026000533 2
- Issued by
- Clear Creek County, Colorado
About this file
This is a revised bid schedule for the Cottonwood Mine Closure Project, a Colorado state and local contract opportunity (PKAA 2026*0533) involving the closure and maintenance of multiple mine features across private and U.S. Forest Service (USFS) and Bureau of Land Management (BLM) lands. The project encompasses eleven line items including mobilization/demobilization, project safety and environmental planning, sediment and erosion control, and installation of various mine closures utilizing methods such as machine backfill, rock bulkheads, grated corrugated steel pipes with bat gate alternatives, and adit door repairs. Item 4.0 (Install Mine Closures) includes guaranteed closures for seven features, while Item 5.0 covers three additional closures designated as not guaranteed. Item 6.0 addresses maintenance of six existing features. Sediment and erosion control work covers 250 linear feet, with additional line items for optional grating (20 square feet), concrete shaft footers (5 linear feet), machine backfill (10 cubic yards), imported rock fill (5 cubic yards), and machine time (10 hours), all marked as not guaranteed. Bids must be submitted via Colorado VSS at http://www.colorado.gov/vss, with no mail or fax submissions permitted.
Bidders are required to complete all pages of the bid schedule in their entirety and must not amend any portion of the document. Offeror information must be provided with authorized signatures, and all line items must be completed with unit prices and total prices for each item. The bid schedule was last updated on February 24, 2026, with a revision date of August 13, 2026. The document specifies separate bid amounts for guaranteed and non-guaranteed closure work, organized by feature identification numbers and closure methods, allowing bidders to price items individually while maintaining compliance with the mandatory completion requirements.
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Text version
Receipt of Addenda Nos.____________ is hereby acknowledged Submit Bids via Colorado VSS at the following link: http://www.colorado.gov/vss Submitting Bids by mail or fax is not permitted.
If VSS is unavailable, please see project Special Conditions for alternative Bid Submittal method.
Item Description Qty Unit Per Unit Price ($) Total Price ($)
Item 1.0 - Mobilize/Demobilize 1 Job N/A
Item 2.0 - Project Safety, Health and Environmental Action Plan 1 Job N/A
Item 3.0 - Sediment and Erosion Control 250 LF
Item 4.0 - Install Mine Closures (See Page 3) 1 Job N/A
Item 5.0 - Install Mine Closures - NOT GUARANTEED (See Page 4) 1 Job N/A
Item 6.0 - Install Mine Closure Maintenance (See Page 5) 1 Job N/A
Item 7.0 - Provide and Install Additional Grating - NOT
GUARANTEED
20 SQ FT
Item 8.0 - Provide and Install Additional Concrete Shaft Footers -
NOT GUARANTEED
5 LF
Item 9.0 - Install Additional Machine Backfill - NOT GUARANTEED 10 CY
Item 10.0 - Provide and Install Additional Imported Rock Fill - NOT
GUARANTEED
5 CY
Item 11.0 - Provide and Install Additional Machine Time - NOT
GUARANTEED
10 HR
Grand Total $:
DQ1 PKAA 2026*0533
Cottonwood Mine Closure Project
Revised August 13, 2026 Bid Schedule
Complete all pages in the spreadsheet as applicable.
Offeror Information
Legal Business Name
Address
City, State Zip
Phone
Signer Printed Name
Title
Date
The Bid shall be signed by a person authorized to bind the Offeror.
Do not amend any part of this bid schedule all pages of this bid schedule must be returned all line items must be completed.
Updated February 24, 2026.
Signature:
Feature ID Feature Type Closure Method Ownership Bid Amount ($)
CCC139 Shaft Machine Backfill Private
CCC140 Adit Grated Corrugated Steel Pipe with Bat Grate Alternative Private
CCC141 Adit Grated Corrugated Steel Pipe with Bat Grate Alternative Private
CCC143 Stope Shaft Grate with Bat Grate Alternative Private
GC049 Stope Hybrid Backfill w/ 20cy PUF Private
GC050 Shaft Machine Backfill Private
GC051 Shaft Grated Corrugated Steel Pipe with Bat Grate Alternative Private
LAR009 Adit Rock Bulkhead with Bat Grate Alternative USFS
DQ1 PKAA 2026*0533
Do not amend any part of this bid schedule all pages of this bid schedule must be returned all line items must be completed.
Total $ (enter here and on Bid Schedule, Item 4.0):
Revised August 13, 2026 Bid Schedule Cottonwood Mine Closure Project
Item 4.0 - Install Mine Closures:
Feature ID Feature
Type Closure Method Ownership Bid Amount ($)
CCC136 Adit Rock Bulkhead with Bat Grate Alternative
Private
CCC137 Adit Rock Bulkhead with Bat Grate Alternative
Private
CCC142 Adit Grated Corrugated Steel Pipe with Bat Grate Alternative
Private
DQ1 PKAA 2026*0533
Do not amend any part of this bid schedule all pages of this bid schedule must be returned all line items must be completed.
Total $ (enter here and on Bid Schedule, Item 5.0):
Revised August 13, 2026 Bid Schedule
Cottonwood Mine Closure Project
Item 5.0 - Closures Not Guaranteed:
Feature ID Feature
Type Closure Method Ownership Bid Amount ($)
143-061 Adit Adit Door Repair Private
161-D-32 Adit Machine Backfill Private
224-104 Shaft Machine Backfill Private
224-119 Adit Adit Door Repair Private
247-P-75 Shaft Panel Access Door Repair BLM
258-114 Shaft Machine Backfill Private
DQ1 PKAA 2026*0533
Do not amend any part of this bid schedule all pages of this bid schedule must be returned all line items must be completed.
Total $ (enter here and on Bid Schedule, Item 6.0):
Revised August 13, 2026 Bid Schedule
Cottonwood Mine Closure Project
Item 6.0 - Maintenance Features:
File details come from the government source that posted it. Updated .