Work List - Gold Creek Project.pdf
PDF 165 KB Posted
- Attached to
- PKAA, Gold Creek Project
- Solicitation number
- DQ1 PKAA 2026000532 1
- Issued by
- Colorado
About this file
This is a work list document for the Gold Creek Project, a mine closure initiative involving federal land management and private property in Colorado. The project encompasses the closure and stabilization of 13 mine features (adits and shafts) located in Gunnison County, Colorado, in the vicinity of Parlin, Ohio City, and Pitkin. The work involves constructing closure structures using three primary methods: bat grates with access doors (6 features), polyurethane foam (PUF) installation (5 features), and corrugated steel pipe (CSP) bulkheads (1 feature). Ten features are designated for active closure work, while three features are marked for exclusion. The features are distributed across United States Forest Service land and private land holdings, with detailed access routes provided from US Highway 50 via County Roads 76, 771, and 763. Specifications for each feature include precise construction dimensions, material requirements, and references to Standard Work Specifications (SWS) sections and standard drawings for implementation.
The project specifications reference detailed closure methodologies outlined in sections 9, 10, 11, and 13 of the SWS documentation and standard drawings numbered 5 and 6. PUF installations require 2 to 3 cubic yards per feature, with collapsed material designated as bottom or back forms to minimize material costs. Bat grate closures include specifications for steel beam keying into bedrock, rebar welding at 12-inch centers, and full bat ladder and human access door installations on historically eligible features. Site conditions vary significantly, with depths ranging from 7 feet to 300 feet and present dimensions varying from 2 feet by 4 feet to 20 feet by 20 feet. The document includes precise UTM NAD83 coordinates for each feature and detailed driving and hiking access instructions, indicating that some features require significant vertical elevation changes and non-motorized access. No pricing, schedule, or procurement timeline information is provided in this work list document.
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Gold Creek – Feature Work List Feature
ID Type Description of Mine Opening
Closure Method
Work Description, Specifications, and Drawings
UTM
NAD83 Access
GC-01
(Historically
Eligible) Adit
Present:8ft by 5ft
Depth:100+ ft Lining:Rock +
Timber Drainage:Yes
Construction Dimensions:
8ft by 5ft
Bat Grate with Access
The existing metal door must be removed and disposed of properly. Construct steel grate with full bat ladder and human access door in accordance with Grated Adit Closure specifications (Sections 11&13, SWS) and standard drawings No. 6 sheets 1 and 2. A 6 foot long 4 inch steel beam shall be keyed into bedrock 6 inches above the floor of the mine. The grated closure will be constructed on top of the beam.
Rebar will be welded to the beam 12 inches on center and run vertically into the mine floor to a minimum depth of 8 inches.
362879 E 4278255 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 6 miles.
Adit is located 150' west of road. Old overgrown access road leads to adit from county road. Feature is located on USFS land with privately owned cabins nearby.
GC-02
(Historically
Eligible) Adit
Present:3ft by 4ft
Depth:50+ ft Lining:Rock +
Drainage:No
6ft by 4ft by 6ft
Bat Grate
Construct steel grate with bat ladder in accordance with Grated
Adit Closure specifications (Sections 11&13, SWS) and standard drawings No. 6 sheets 1 and 2.
362680 E 4278467 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 6 miles.
Adit is located 1,200' west of road, upslope (450' vertical). Old non-drivable road leads to the adit from CR 771. Feature is located on USFS land.
ID Type Description of Mine Opening
Closure Method
Work Description, Specifications, and Drawings
UTM
NAD83 Access
GC-03 Shaft
Present:20ft by 20ft
Depth:10 ft Lining:Rock +
10ft by 10ft by
10ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
3 cubic yards of PUF are required. Collapsed material to be used as bottom form.
362669 E 4278263 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 6 miles.
Shaft is located 1,200' west of road, upslope (425' vertical). Old non-drivable road leads to the shaft from CR 771. Feature is located on USFS land.
GC-04 Adit
Present:2ft by 4ft
Depth:30+ ft Lining:Rock
4ft by 4ft
CSP set in Native Rock
Bulkhead
Install Corrugated Steel Pipe with bat ladder in accordance with Corrugated Steel Pipe Adit Closure specifications (Section
10, SWS) and Standard Drawing Number 5.
362570 E 4277616 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 5 miles.
Adit is located adjacent to old mine access road, approximately 475' from CR 771. Must hike on foot for 200 feet. Feature is located on private land.
GC-05 Adit
Present:6ft by 4ft
Depth:200+ ft
6ft by 4ft
Bat Grate with Access
Construct steel grate with bat ladder and human access door in accordance with Grated Adit Closure specifications (Sections
11&13, SWS) and standard drawings No. 6 sheets 1 and 2.
362581 E 4277521 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 5 miles.
Adit is located at the end of an old mine access road from CR 771. Feature is located on private land.
ID Type Description of Mine Opening
Closure Method
Work Description, Specifications, and Drawings
UTM
NAD83 Access
GC-06 Shaft
Present:15ft by 15ft
Depth:10 ft
15ft by 15ft by
10ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
3 cubic yards of PUF are required. Collapsed material will be used as the bottom form.
366712 E 4270033 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn right onto 763C and continue for 1.5 miles where there are a few cabins. Park and continue on foot downslope to shaft, approximately 300 feet.
Feature is located on private land.
GC-07 Shaft
Present:10ft by 10ft
Depth:10 ft
10ft by 10ft by
10ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
3 cubic yards of PUF required.
Collapsed material will be used as the bottom form.
366732 E 4270134 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn right onto 763C and continue for 1.5 miles where there are a few cabins. Prospect shaft is located adjacent to road. Feature is located on USFS land.
GC-08
(Historically
Eligible) Adit
Present:2ft by 4ft
Depth:25+ ft
5ft by 4ft
Bat Grate with Access
Construct steel grate with bat ladder and human access in accordance with Grated Adit
Closure specifications (Sections 11&13, SWS) and standard drawings No. 6 sheets 1 and 2.
369123 E 4269998 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn left onto 763D and continue for 2 miles and turn right onto unmarked road. Continue for a little over a 1/3 of a mile and the adit is located on the side of the road. Feature is located on private land.
ID Type Description of Mine Opening
Closure Method
Work Description, Specifications, and Drawings
UTM
NAD83 Access
GC-09
(Historically
Eligible) Adit
Present:3ft by 5ft
Depth:40 ft
5ft by 5ft
Bat Grate with Access
Construct steel grate with bat ladder and human access in accordance with Grated Adit
Closure specifications (Sections 11&13, SWS) and standard drawings No. 6 sheets 1 and 2.
369069 E 4270010 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn left onto 763D and continue for 2 miles and turn right onto unmarked road. Continue for a little over a
1/3 of a mile and the adit is located 100 feet from road. Feature is located on private land.
GC-10
(Historically
Eligible) Adit
Present:3ft by 4ft
Depth:300 ft
5ft by 4ft
Bat Grate with Access
Construct steel grate with bat ladder and human access in accordance with Grated Adit
Closure specifications (Sections 11&13, SWS) and standard drawings No. 6 sheets 1 and 2.
369036 E 4269961 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn left onto 763D and continue for 2 miles and turn right onto unmarked road. Continue for a little over a
1/3 of a mile and the adit is located 100 feet from road. Feature is located on private land.
GC-11 Adit (exclude)
Present:4ft by 2ft
Depth:50+ ft
4ft by 2ft by 6ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
2 cubic yards of PUF required.
Collapsed material will be used as the back form.
368457 E 4270248 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass Road. Drive up and over the pass. At the last switch back, on the southern side of the pass, park and head north along the headwaters of Hot Springs Creek. The adit is located 1,750 north of CR 763. Feature is located on private land.
ID Type Description of Mine Opening
Closure Method
Work Description, Specifications, and Drawings
UTM
NAD83 Access
GC-12 Adit (exclude)
Present:3ft by 3ft
Depth:15+ ft Lining:Rock +
3 ft by 3ft by 6ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
2 cubic yards of PUF required.
Collapsed material will be used as the back form.
361450 E 4273096 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 2 miles.
Turn right onto Forest Service Road 771 1b.
Continue for approximately 1 mile and adit is located on the side of the drainage.
Feature is located on USFS land.
GC-13 Adit (exclude)
Present:7ft by 4ft
Depth:18 ft
7ft by 4ft by 6 ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
3 cubic yards of PUF required.
Collapsed material will be used as the back form.
362377 E 4277303 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
8.75 miles to Ohio City. Turn left onto County Road 771 and continue for 5 miles.
Adit is located at the end of an old mine access road from CR 771. Feature is located on private land.
GC-15 Adit (exclude)
Present:3ft by 4ft
Depth:7 ft Lining:Timber
3ft by 4ft by 6ft
Polyurethane Foam
Install PUF in accordance with Polyurethane Foam Closure specifications (Section 9, SWS).
2 cubic yards of PUF required.
Collapsed material will be used as the back form.
366773 E 4270049 N
From US Highway 50 at the town of Parlin, Colorado, take County Road 76 north for
15.5 miles to Pitkin. Exit Pitkin to the south by taking County Road 763, Waunita Pass.
At the top of the pass turn right onto 763C and continue for 1.5 miles. Just before a few cabins, veer left and drive another 100 feet.
Park and continue on foot upslope to adit, approximately 150 feet. Adit Located just east of GC-06.Feature is located on USFS land.
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