HomeMy WebLinkAbout9.14.22 Board Correspondence -Dam Safety Compliance Report submitted in FERC P-1121-000From:Clerk of the Board
To:Bennett, Robin; Clerk of the Board; Connelly, Bill; Cook, Holly; Cook, Robin; Hironimus, Patrizia; Kimmelshue, Tod; Lucero, Debra; Paulsen, Shaina; Pickett, Andy; Reaster, Kayla; Ritter, Tami; Stephens, Brad J.; Sweeney, Kathleen; Teeter, Doug; Valencia,
Shyanne
Subject:Board Correspondence - FW: Dam Safety Compliance Report submitted in FERC P-1121-000,et al. by Pacific Gas and Electric Company,et al.
Date:Wednesday, September 14, 2022 8:20:01 AM
Please see Board Correspondence below.
Shaina Paulsen
Associate Clerk of The Board
Butte County Administration
25 County Center Drive, Suite 200, Oroville, CA 95965
T: 530.552.3304 | F: 530.538.7120
-----Original Message-----
From: 'FERC eSubscription' <eSubscription@ferc.gov>
Sent: Wednesday, September 14, 2022 6:25 AM
Subject: Dam Safety Compliance Report submitted in FERC P-1121-000,et al. by Pacific Gas and Electric Company,et al.
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On 9/14/2022, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.:
Filer: Pacific Gas and Electric Company
No Organization Found (as Agent)
Docket(s): P-1121-000
P-2105-000
P-803-000
P-619-000
P-77-001
Lead Applicant: Pacific Gas and Electric Company
Filing Type: Dam Safety Compliance Report
Description: Pacific Gas and Electric Company submits plan to conduct a screening level portfolio risk analysis to prioritize nine spillways for large capital improvement projects at the Battlecreek Project et al. under P-1121 et al.
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Power Generation
245 Market Street
San Francisco, CA 94105
Mailing Address:
Mail Code N11D
P.O. Box 770000
San Francisco, CA 94177
September 13, 2022
Via Electronic Submittal (E-File)
Frank L. Blackett, P.E., Regional Engineer
Federal Energy Regulatory Commission
Division of Dam Safety and Inspections
San Francisco Regional Office
100 First Street, Suite 2300
San Francisco, CA 94105-3084
RE: Battle Creek Hydroelectric Project, FERC No. 1121-CA
Upper North Fork Feather River Hydroelectric Project, FERC No. 2105 -CA
DeSabla-Centerville Hydroelectric Project, FERC No. 803-CA
Bucks Creek Hydroelectric Project, FERC No. 619-CA
Potter Valley Hydroelectric Project, FERC No. 77-CA
Plan for PG&E’s Screening-Level Portfolio Risk Analysis
ENCLOSURE CONTAINS CUI//CEII – DO NOT RELEASE
Dear Frank L. Blackett:
This letter presents Pacific Gas and Electric Company’s (PG&E) plan to conduct a screening-
level portfolio risk analysis (SLPRA) to prioritize nine spillways for large capital improvement
projects. PG&E will use the results of the SLPRA to support a long-term capital improvement
program (CIP) to address deficiencies at its spillways. The CIP is a component of PG&E’s
Spillway Assessment and Improvement Program (SAIP), which was initiated in 2017 following
the Oroville Dam spillway incident.
In early 2022, PG&E completed detailed engineering assessments for eight of its spillways and
developed potential alternatives to mitigate deficiencies identified by the assessments. PG&E
submitted the results of the assessments and alternatives analyses to FERC in May 2022. In
the transmittal letters accompanying the alternatives analysis reports, PG&E committed to
developing a risk-informed framework to prioritize spillway projects. PG&E plans to submit
results of the prioritization effort, along with plans and schedules for further actions to improve
the spillways, by July 31, 2023.
In addition to the eight spillway assessments completed in early 2022, PG&E is currently
assessing its Lake Almanor spillway. PG&E expects the Lake Almanor spillway assessment to
be complete in early 2023. As described in a letter to your office dated June 30, 2022, PG&E
plans to submit results of the assessment to FERC by April 30, 2023. In the meantime, PG&E
will use preliminary results from the assessment to incorporate the Lake Almanor spillway into
the SLPRA.
Frank L. Blackett, P.E., Regional Engineer
September 13, 2022
Page 2
For reference, the nine spillways proposed for evaluation as part of the SLPRA are
summarized in the following table, along with the dates of PG&E’s letters to FERC submitting
the corresponding engineering assessment and alternatives analysis reports.
Project Dam Letter Date
Battle Creek
Hydroelectric Project,
FERC No. 1121
North Battle Creek Dam, NATDAM No. CA00394 2-May-22
Macumber Dam, NATDAM No. CA00393 2-May-22
Upper North Fork Feather
River Hydroelectric
Project, FERC No. 2105
Lake Almanor Dam, NATDAM No. CA00327 Assessment in progress
Belden Forebay Dam, NATDAM No. CA00413 3-May-22
Butt Valley Dam, NATDAM No. CA00326 2-May-22
DeSabla-Centerville
Hydroelectric Project,
FERC No. 803
Philbrook Dam, NATDAM No. CA00345 3-May-22
Round Valley Dam, NATDAM No. CA00346 3-May-22
Bucks Creek
Hydroelectric Project,
FERC No. 619
Bucks Storage Dam, NATDAM No. CA00332 3-May-22
Potter Valley
Hydroelectric Project,
FERC No. 77
Cape Horn Dam, NATDAM No. CA00399 31-May-22
PG&E’s SLPRA plan is enclosed with this letter (Enclosure 1). The plan describes PG&E’s
proposed Level 1 risk assessment methodology and scope, identifies proposed members of
the risk assessment team, and provides resumes for the risk facilitators for FERC’s review. As
described in the SLPRA plan, PG&E’s first risk assessment workshop is scheduled for October
12, 2022. To maintain the planned schedule, PG&E respectfully requests FERC’s review and
comment of the SLPRA risk plan by October 1, 2022.
Should you have technical questions concerning this matter, please contact Dr. Eng Sew Aw,
senior engineer for PG&E, at (415) 973-8158. For general questions, please contact Jamie
Visinoni, senior license coordinator for PG&E, at (530) 215-6676.
Sincerely,
David L. Ritzman, P.E., G.E.
Chief Dam Safety Engineer
Enclosure: CUI//CEII – DO NOT RELEASE
1. Plan for PG&E’s screening-level portfolio risk analysis (SLPRA) dated September 6, 2022
cc: List Attached
Frank L. Blackett, P.E., Regional Engineer
September 13, 2022
Page 3
cc: With Enclosure
Sharon Tapia, Chief
Department of Water Resources
Division of Safety of Dams
2720 Gateway Oaks Drive, Suite 300
Sacramento, CA 95833