3-Appendix A CloseSchedule.pdf
PDF 70 KB Posted
- Attached to
- BD27-113 Wattis Mine Coal Fire Abatement
- Solicitation number
- BD27-113
- Issued by
- Cache County, Utah
About this file
This is an Appendix A Close Schedule document related to RFP BD27-113 issued by the State of Utah Division of Purchasing, conducted by the Division of Oil, Gas, and Mining, for coal fire abatement work at the Wattis Mine in Carbon County. The project encompasses the sealing of five mine openings, eleven subsidence openings, fifteen exhaust vents and air intakes, and twenty-seven open cracks at an abandoned coal mine through excavation, grading, shallow boring drilling, and deployment of specialized equipment including a walker "spider" excavator. A mandatory in-person site visit was scheduled for Tuesday, October 20th, at 10:00 a.m. at the northwest parking lot located at the intersection of UT-10 S Carbon Avenue and Ridge Road in Carbon County, Utah (GPS coordinates: 39.536251, -110.816029). The meeting was expected to last approximately four hours and involve driving and hiking over rugged terrain, with high-clearance four-wheel-drive vehicles recommended. Attendance at the entire pre-bid meeting by an authorized representative was mandatory for bid submission; bids from firms not recorded as attending would be deemed nonresponsive.
The document emphasizes the specialized and hazardous nature of abandoned mine closure work, distinguishing it from standard residential or commercial construction and requiring unique expertise and precautions. Bidders were required to supplement the pre-bid meeting by examining the project independently while adhering to safety protocols prohibiting entry into the mines themselves. The Close Schedule appendix establishes procedural timelines and requirements that bidders must follow to maintain bid responsiveness and contract eligibility for this abandoned mine remediation project.
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Other files
| File | Type | Posted |
|---|---|---|
| 2-Vendor Prerequisites - RFP Agency.pdf | ||
| 5-Ch.6 DRAWINGS.pdf | ||
| 4-Ch.5 BID DOCUMENTS Fillable.pdf | ||
| 6-Wattis Coal Mine Fire 2 Final Specs TEXT FINAL 20261007.docx | DOCX document | |
| 10-007958 BidSchedule Wattis Fire 2 Abatement - Final.xlsx | XLSX spreadsheet | |
| HO1_HO2_and_HO3_50ft_Veg_Clearing_Buffer.kmz | KMZ file | |
| 12-Interactive-Score-Sheet-Updated-6.18.2025 DSH 2026-09-03.xls | XLS spreadsheet | |
| Wattis_Mine_Fire_Features.kmz | KMZ file | |
| 9-Wattis Coal Mine Fire 2 Final Specs FULL FINAL 20261007.pdf | ||
| 1-Claim of Business Confidentiality Updated.pdf.pdf | ||
| 11-007958 Engineers Estimate Wattis Fire 2 Abatement.xlsx | XLSX spreadsheet | |
| UAS_Delineated_Cracks.kmz | KMZ file | |
| Wattis_Construction_Areas.kmz | KMZ file | |
| 14-Pre-Bid Meeting Info 2026-10-07.docx | DOCX document | |
| 7-Ch.8 PHOTOGRAPHS.pdf | ||
| 8-Ch.7 MAPS.pdf | ||
| Wattis_Tension_Cracks.kmz | KMZ file | |
| 15-Pre-Bid Meeting Location Map.pdf |
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Text version
Bid
Item
Site ID / Tag No. UTM Coordinates Description of Mines
Opening Dimensions/Key
Features
Special Conditions Closure
Method/Comment
Estimated
Quantity (CY)
272.0
1 4150808SH001 496187.444 mE
4376531.121 mN
Subsidence Foam Backfill 0.5
2 4150808SH011 496142.708 mE
4376445.965 mN
37.7ft Length, Tension Crack
Center Points
Foam Backfill 14.0
3 4150808SH012 496144.536 mE
4376453.985 mN
17.1ft Length, Tension Crack
Center Points
Foam Backfill 6.3
4 4150808SH013 496149.153 mE
4376444.408 mN
56.4ft Length, Tension Crack
Center Points
Foam Backfill 20.9
5 4150808SH014 496150.842 mE
4376451.408 mN
48.2ft Length, Tension Crack
Center Points
Foam Backfill 17.3
6 4150808SH015 496152.963 mE
4376451.677 mN
13.8ft Length, Tension Crack
Center Points
Foam Backfill 5.1
7 4150808SH016 496155.248 mE
4376457.816 mN
51.5ft Length, Tension Crack
Center Points
Foam Backfill 19.1
8 4150808SH017 496156.119 mE
4376463.909 mN
27.9ft Length, Tension Crack
Center Points
Foam Backfill 10.3
9 4150808SH018 496158.907 mE
4376454.486 mN
22.6ft Length, Tension Crack
Center Points
Foam Backfill 8.4
10 4150808SH019 496160.783 mE
4376464.549 mN
4.9ft Length, Tension Crack
Center Points
Foam Backfill 2.0
11 4150808SH020 496167.689 mE
4376483.606 mN
110.2ft Length, Tension Crack
Center Points
Foam Backfill 40.8
12 4150808SH021 496187.413 mE
4376555.500 mN
160.8ft Length, Tension Crack
Center Points
Slight air intake. Foam Backfill 59.6
13 4150808SH022 496173.839 mE
4376482.678 mN
92.8ft Length, Tension Crack
Center Points
Foam Backfill 34.5
14 4150808SH023 496175.258 mE
4376516.620 mN
29.2ft Length, Tension Crack
Center Points
Foam Backfill 10.8
15 4150808SH024 496179.681 mE
4376540.274 mN
60.4ft Length, Tension Crack
Center Points
Pulsing air intake. Foam Backfill 22.4
84.0
16 4150808HC001 495025.705 mE
4376391.378 mN
Exhaust Vent Air exhaust present. Low O2, gas alarm warnings. Mostly reclaimed.
Hazardous gas present.
Foam Backfill 0.1
17 4150808HC002 495010.640 mE
4376405.260 mN
Exhaust Vent Historic 150,000cft air intake portal. Potential for low O2
Foam Backfill 0.1
18 4150808HO004
495317.628 mE
4376504.732 mN Entry or Portal
Exhausting cold air. Large collapsed portal at entry, open behind collapse. Follows mine geometry and continues ESE into mountain.
Potential for low O2
Foam Backfill 16.8
Ridge 1 Tension Cracks
Star Point Bench & East Mudwater Canyon Portal
19 4150808HO005 495110.275 mE
4376315.616 mN
Entry or Portal Star Point No. 1. Multiple openings, negative for air intake. Mostly reclaimed. Blasted shut about
25ft into the opening from historic records, large open joint about 5ft in above opening.
Potential for low O2
Foam Backfill 67.0
18.0
20 4150817HC001 495601.986 mE
4374449.304 mN
Exhaust Vent Cold air exhaust, lines up with Portal on 1954 map. Potential for low O2
Foam Backfill 1.5
21 4150817SH001 495721.242 mE
4374360.231 mN
Subsidence No notable intake or exhaust during smoke-test.
4' L x 2' W x 10' D sinkhole exposing coal seam and possible collapsed workings.
Foam Backfill 8.5
22 4150817VH001 495713.761 mE
4374355.573 mN
Exhaust Vent Eroded and collapsed mine workings. Exhaling cold air. Subsidence. Potential for low O2.
Foam Backfill 8.0
273.0
23 4150808HO001 496386.140 mE
4376541.306 mN
Entry or Portal Collapsed and reclaimed portals. Hazardous gas present
Foam Backfill 57.0
24 4150808HO002 496391.000 mE
4376534.000 mN
Entry or Portal Collapsed and reclaimed portals. Hazardous gas present
Foam Backfill 72.0
25 4150808VH002 496369.476 mE
4376536.112 mN
Exhaust Vent Mine vent with moisture and moss along scarp feature. 134 F Degrees. Hazardous gas present
Foam Backfill 0.1
26 4150808VH006 496380.766 mE
4376570.850 mN
Exhaust Vent 105 F Degrees. Hazardous gas present Foam Backfill 0.1
27 4150808VH012 496368.176 mE
4376549.240 mN
88.28ft Length, Tension Crack
Center Points
Foam Backfill 32.6
28 4150808VH021 496363.543 mE
4376551.531 mN
81ft Length, Tension Crack
Center Points
Foam Backfill 30.0
29 4150808VH022 496372.827 mE
4376547.932 mN
67.9ft Length, UAS Cracks
Center Points
Foam Backfill 25.1
30 4150808VH023 496369.222 mE
4376549.158 mN
80.8ft Length, UAS Cracks
Center Points
Foam Backfill 30.0
31 4150808VH024 496365.768 mE
4376550.400 mN
70.6ft Length, UAS Cracks
Center Points
Foam Backfill 26.1
355.0
32 4150808HO003 495928.715 mE
4376388.708 mN
Entry/Portal Collapsed portals. Hazardous gas present Foam Backfill 7.5
33 4150808SH002 495991.274 mE
4376437.654 mN
Subsidence Open hole, 82.6 F Degrees Flir Foam Backfill 10.5
34 4150808SH003 495994.370 mE
4376441.204 mN
Subsidence Open crack, 75.9 F Degrees Flir Foam Backfill 10.5
35 4150808SH004 495967.025 mE
4376406.153 mN
Subsidence Foam Backfill 7.5
36 4150808SH005 495994.414 mE
4376426.765 mN
Subsidence Foam Backfill 7.5
37 4150808SH006 495962.643 mE
4376408.326 mN
Subsidence Foam Backfill 7.5
South Openings
HO1/HO2 Portals
HO3 Portal
38 4150808SH007 495919.048 mE
4376406.535 mN
Subsidence West HO3 subsidence crack (northern extent) Foam Backfill 10.5
39 4150808SH008 495918.872 mE
4376397.946 mN
Subsidence West HO3 subsidence crack (southern extent) Foam Backfill 10.5
40 4150808SH009 495995.501 mE
4376435.695 mN
Subsidence Foam Backfill 7.5
41 4150808SH010 495912.587 mE
4376407.749 mN
Subsidence Subsidence crack west and parallel to subsidence feature
Foam Backfill 7.5
42 4150808VH001 495924.847 mE
4376403.725 mN
Exhaust Vent Main vent for west HO3 area. Hazardous gas present
Foam Backfill 10.5
43 4150808VH003 495926.898 mE
4376413.050 mN
Exhaust Vent Temperature reading of 152F. Hazardous gas present
Foam Backfill 7.5
Bid
Item
Site ID / Tag No. UTM Coordinates Description of Mines
Opening Dimensions/Key
Features
Special Conditions Closure
Method/Comment
Estimated
Quantity (CY)
44 4150808VH004 495927.676 mE
4376422.372 mN
Exhaust Vent Hazardous gas present Foam Backfill 7.5
45 4150808VH005 495953.048 mE
4376463.421 mN
Exhaust Vent Hazardous gas present Foam Backfill 7.5
46 4150808VH007 495946.560 mE
4376381.748 mN
Exhaust Vent East HO3 main vent and northern extent Foam Backfill 10.0
47 4150808VH008 495946.898 mE
4376371.538 mN
Exhaust Vent East HO3 southern extent. Hazardous gas present
Foam Backfill 10.0
48 4150808VH009 495964.089 mE
4376379.702 mN
Exhaust Vent Two exhaust vent found near HO3 features.
Moist, green moss-covered vents. Hazardous gas present.
Foam Backfill 7.5
49 4150808VH010 495922.591 mE
4376394.518 mN
Intake Foam Backfill 4.5
50 4150808VH011 495927.588 mE
4376417.932 mN
Intake Foam Backfill 4.5
51 4150808VH013 495912.834 mE
4376403.618 mN
64.04ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 23.5
52 4150808VH014 495919.512 mE
4376397.895 mN
75.70ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 28.0
53 4150808VH015 495927.214 mE
4376419.201 mN
59.2ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 22.0
54 4150808VH016 495959.015 mE
4376430.977 mN
43.8ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 16.0
55 4150808VH017 495953.313 mE
4376388.653 mN
122.4ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 45.0
56 4150808VH018 495998.723 mE
4376430.665 mN
104.71ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 39.0
57 4150808VH019 495998.772 mE
4376445.750 mN
39ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 14.5
58 4150808VH020 495965.387 mE
4376455.058 mN
28.2ft Length, UAS Cracks
Center Points
Linear thermal feature detected from UAS IR survey.
Foam Backfill 10.5
1002.0Total Volume
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