Pacific Gas and Electric Company Requests Extension of Time for Lake Valley Dam Inspections

Pacific Gas and Electric Company (PG&E) has submitted a request to the Federal Energy Regulatory Commission (FERC) to extend the deadline for addressing Recommendations 1 and 39 from the ninth Part 12D safety inspection report for Lake Valley Dam, part of the Drum-Spaulding Hydroelectric Project. The request, dated August 26, 2025, seeks an additional 11 months to provide the necessary studies and analysis for the dam's embankment and foundation materials. The extension is necessary due to the complexity of the studies and the need for additional time to complete the work. PG&E has already submitted its original plan and schedule for addressing the recommendations in a letter dated January 30, 2023, and provided its most recent status update and extension of time request in a letter dated March 24, 2025.

Key Takeaways:

• PG&E has requested an extension of time to address Recommendations 1 and 39 from the ninth Part 12D safety inspection report for Lake Valley Dam, part of the Drum-Spaulding Hydroelectric Project.
• The request seeks an additional 11 months to provide the necessary studies and analysis for the dam's embankment and foundation materials.
• PG&E has already submitted its original plan and schedule for addressing the recommendations in a letter dated January 30, 2023, and provided its most recent status update and extension of time request in a letter dated March 24, 2025.
• The extension is necessary due to the complexity of the studies and the need for additional time to complete the work.
• PG&E has indicated that it will submit the results of the study, analysis, and IC review letter to FERC by April 30, 2026, along with follow-up plans and schedules.
• The Drum-Spaulding Hydroelectric Project, as part of Pacific Gas and Electric Company's operations, has a long history of providing electricity to the state of California.
• PG&E's Deputy Chief Dam Safety Engineer, Michael Dydiw, P.E., is the primary contact for this matter.
• Technical questions should be directed to Scott Clowser, dam safety engineer for PG&E, at (530) 889-3131, while general questions can be directed to Jackie Pope, license coordinator for PG&E, at (530) 254-4007.

Statistics:

• The eighth paragraph of the document mentions that PG&E originally submitted its plan and schedule for addressing the recommendations in a letter dated January 30, 2023.
• The tenth paragraph indicates that the date for submitting the results of the study, analysis, and IC review letter to FERC is April 30, 2026.
• The document was submitted to the Federal Energy Regulatory Commission on August 26, 2025.

Sources:

• Pacific Gas and Electric Company, Letter to Frank L. Blackett, Regional Engineer, Federal Energy Regulatory Commission, Division of Dam Safety and Inspections, dated August 26, 2025.
• Enclosure 1: Pacific Gas and Electric Company, Extension of Time Request for Recommendations 1 and 39 from the Ninth Part 12D Safety Inspection Report, dated August 26, 2025.
• The ninth Part 12D safety inspection report for Lake Valley Dam, dated December 2022.