Supplement - Bear Gulch BAER Adit Closure.pdf
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- Solicitation number
- 12363N26Q4188
- Issued by
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Department of Agriculture Forest Service
About this file
This document is a Project Supplement for the Bear Gulch Post-Fire Adit Safety Closure project, located on the Olympic National Forest in Washington State (coordinates 47.503° N, 123.327° W). The supplement provides supporting reference materials and safety guidance for contractors developing project workplans and Health and Safety Plans (HASP).
The document identifies three primary post-fire hazard categories requiring mitigation: falling rocks, trees, logs, and other debris that may roll or fall into roadways and trails due to vegetation loss, tree mortality, soil burn severity, and severe weather conditions; stumps and root holes created by wildfire that increase unstable footing risk, identifiable by excessive white ash accumulation; and snags and hazard trees that become unstable during windy and wet weather. The project site is accessible via the Copper Creek Trail (#876) near a footbridge crossing Copper Creek stream channel, approximately 0.25 miles from the trailhead. The existing metal grate safety closure at the mine adit portal entrance was found damaged during September 2025 USFS assessment. Supporting materials include three maps showing aerial imagery overview, USFS recreation sites and trails at 1:64k scale, and a detailed 1:6k hillshade map with WaDNR Lidar digital terrain model data, plus four photographs documenting the adit location, existing damaged closure, and portal entrance conditions.
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Text version
Bear Gulch Post-Fire – Adit Safety Closure
Project Supplement
Table of Contents Safety Supplement
Maps (and Descriptions)
Map 1
Map 2
Map 3
Photos
Photo 1 - A photo of the mine adit taken on the Copper Creek trail (#876 – Olympic NF).
Burned vegetation exposed the mine adit and near the surface level of the existing stream channel. There is also debris from the fire that has fallen downslope near the adit. The photo was taken looking across near the footbridge that crosses Copper Creek stream channel. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025
Photo 2 - The same image as Photo 1 but with annotations to assist with orientation for portal closure
Photo 3 - The existing safety closure used to keep visitors from entering mine adit was found to be damaged. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025
Photo 4 – Photo taken at the portal entrance and looking into the mine adit
Safety Supplement The following information is provided to assist with developing the Health and Safety Plan (HASP). The hazards identified are more likely than not to exist in a Post-Fire work area which shall be addressed and mitigated in the Project Workplan and HASP.
Hazards Hazard Description Falling rocks, trees, logs, and other materials that may fall or roll into the roadway or trails
Loose materials upslope can be unpredictably unstable due to vegetation loss, tree mortality, soil burn severity, and severe weather than can trigger the mobilization and transport of debris.
Stumps and Root Holes
Burned stumps and other voids on the ground from wildfire can increase the probability of unstable footing. Excessive amounts of white ash may indicate the presence of a stump or root hole.
Snags and Hazard Trees
Be aware of severe weather conditions.
Trees may become unstable from windy and wet weather conditions.
Maps (and Descriptions) Map 1 – An aerial imagery overview map of the project location
Map 2 – Hillshade project map at 1:64k showing nearby USFS Recreation Sites and Trails and Surface Management.
Map 3 – Hillshade project map at 1:6k scale with WaDNR Lidar digital terrain model (DTM).
https://lidarportal.dnr.wa.gov https://lidarportal.dnr.wa.gov/
Map 1
Map 2
Map 3
Photos
Photo 1 - A photo of the mine adit taken on the Copper Creek trail (#876 – Olympic NF).
Burned vegetation exposed the mine adit near the surface level of the existing stream channel. There is also debris from the fire that has fallen downslope near the adit. The photo was taken near the footbridge that crosses Copper Creek stream channel. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025.
Photo 2 - The same image as Photo 1 but with annotations to assist with orientation for portal closure.
• Red Arrow – Indicates the location of Portal
• Grey Arrow o Left – Upstream direction and to footbridge.
o Right – Downstream direction and to trailhead approximately 0.25 miles.
o Up – Map North
Photo 3 - The existing safety closure used to keep visitors from entering mine adit was found to be damaged. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025.
Photo 4 – Photo taken at the portal entrance and looking into the mine adit. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025.
| Safety Supplement |
| Maps (and Descriptions) |
| Map 1 |
| Map 2 |
| Map 3 |
| Photos |
| Photo 1 - A photo of the mine adit taken on the Copper Creek trail (#876 – Olympic NF). Burned vegetation exposed the mine adit near the surface level of the existing stream channel. There is also debris from the fire that has fallen downslope near th... |
| Photo 2 - The same image as Photo 1 but with annotations to assist with orientation for portal closure. |
| Photo 3 - The existing safety closure used to keep visitors from entering mine adit was found to be damaged. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025. |
| Photo 4 – Photo taken at the portal entrance and looking into the mine adit. Photo collected during Bear Gulch Post-Fire assessment by USFS staff in September, 2025. |
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