Silver Lake Dam Geotechnical Survey
Silver Lake Irrigation District proposes to use a tracked drill rig and a tracked excavator to perform geotechnical tests on the dam and borrow sites to determine potential actions and complete short-term repairs. A Minimum Requirements Analysis has helped determine that the following equipment (or similar) would be used: tracked CME-850 Drill Rig, Cat 312 Excavator, trash pump, and motorized equipment repair tools. The 3 pieces of equipment would be used for an estimated 3 days each. Forest Road 37-874 and 4.7 miles of former access route inside the Wilderness would be used to get to the dam. In addition to completing geotechnical testing of the dam and borrow sites, the concrete inlet structure would be stabilized and an existing piece of concrete that partially blocks the outlet pipe would be removed. The Forest Service is directed by law to facilitate a use that predates the 1964 Wilderness Act, to enforce permit conditions requiring dam maintenance, and to demonstrate compliance with the Wilderness Act.
Project Summary
Location Summary:
East of Pinedale inside the Bridger Wilderness Area
Project Milestones:
| Milestone | Date |
|---|---|
| Scoping Start | 03/15/2020 |
| Comment Period | 04/15/2020 |
| Objection Period Start | 07/11/2020 |
| Decision | 09/2020 (Estimated) |
| Implementation | 09/2020 (Estimated) |
Expected Analysis Type:
Environmental Assessment
Special Authority:
Not Applicable / Other
Lead Management Unit:
Pinedale Ranger District
Notice and Comment Regulation:
218 (2013) Non-HFRA
Project Purpose:
Special Use Management
Project Activity:
Special Use Authorizations
Current Status:
Completed
Project Decision Information
Silver Lake Dam Geotechnical Survey
Decision Signed Date: 09/01/2020
Forests:
Bridger-Teton National Forest
Districts:
Pinedale Ranger District
States:
Wyoming
Counties:
Sublette
Legal Land Description:
T.32.N R.5.W 6th PM
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Justin Snyder
29 East Fremont Lake Rd.
Pinedale, WY 82941
307 367 5740
justin.snyder@usda.gov
Last Updated: 9/1/2020