Eagle Creek Hydro Power, LLC Responds to Dam Safety Inspection Follow-up Letter

Strategic Insights -

Eagle Creek Hydro Power, LLC has submitted a document to the Federal Energy Regulatory Commission in response to the August 19, 2024 Dam Safety Inspection (DSI) follow-up letter. The company outlines its plan and schedule to address comments from the inspection, including the monitoring of sediment accumulation in the drainage system and the repair or replacement of a cracked gauge on the non-overflow section.

Key Takeaways:

  • The company has acknowledged soil and debris accumulation in the drainage system in the right abutment, which was not clear if it was from seepage or surface runoff.
  • The company has confirmed that silt monitoring is included as part of the routine inspections completed each month by site operations and that this monitoring has continued per the Dam Safety Surveillance and Monitoring Plan (DSSMP).
  • The company will provide confirmation that the buckets for silt capture have been reinstalled in the 2025 Dam Safety Surveillance and Monitoring Report (DSSMR).
  • The company will repair or replace one of the cracks gauges (C5) on the non-overflow section in 2025, and the repair will be confirmed in the 2025 DSSMR.
  • The company promises to follow up on these commitments and provide confirmation in the 2025 DSSMR.

Statistics:

  • The inspection identified 2 (2) items that require attention from the company, including the issue with the cracked gauge and the sediment accumulation in the drainage system.
  • The company has confirmed that silt monitoring is included in the routine inspections completed each month by site operations.
  • The company will repair or replace the cracked gauge in 2025.

Sources:

  • Eagle Creek Hydro Power, LLC, Response to May 29, 2025 DSI Follow-up Letter
  • Federal Energy Regulatory Commission, 2024 Dam Safety Inspection Review