Remediation/sealing of two abandoned vertical mine shafts utilizing a common remediation technique known as a Polyurethane Foam (PUF) closure.
Location
Trinity Unit of the Whiskeytown-Shasta-Trinity National Recreation Area, NW of Minersville Boat Ramp and NW of Ridgeville Boat-In Campground.
Project timeline
1
Scoping Start
07/11/2023
2
Decision
08/2023 (Estimated)
3
Implementation
09/2023 (Estimated)
NEPA / regulatory detail
| Categorical Exclusion | 32.2 (8), 36 Cfr 220.6(E)(8) |
| Special Authority | Not Applicable / Other |
| Notice and Comment Regulation | Not Subject to Regulations |
| Project Activity | Abandoned Mine Land Clean-Up |
| Remediation of Abandoned Mine Shafts 2023 | Decision Signed Date: 08/31/2023 |
| Forests | Shasta Trinity National Forest |
| Districts | Weaverville Ranger District |
| Legal Land Description | Not Applicable |