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Install Fall Protection Systems. Install new Occupational Safety and Health Administration (OSHA) -compliant ladders and landings with safety cage and/or install fall restraint systems.
Install a new spillway ladder.
Seal or Mitigate Existing Leakage. Address flowing water by sealing leaks or otherwise diverting, collecting and disposing of flows.
Drainage Improvements. Clear the drains in the dam so that water can drain as designed and/or install sump pumps, if appropriate.
Replace Watertight Door between Ladder Wells 3 & 4. This scope item includes replacing the existing watertight door between Ladder Wells 3 & 4.
The project is part of a larger Hetchy Capital Improvement Program (HCIP), a multi-year capital program to upgrade or improve water conveyance, water storage, and power generation facilities in the Sierra Nevada portion of the Hetch Hetchy Regional Water System.