HomeMy WebLinkAbout12.22.22 Board Correspondence - FW Emergency Action Plan submitted in FERC P-619-000 by Pacific Gas and Electric Company,et al.From:Clerk of the BoardTo:BOSSubject:Board Correspondence - FW: Dam Safety Compliance Report submitted in FERC P-803-000 by Pacific Gas and Electric Company,et al.Date:Tuesday, December 27, 2022 8:54:58 AM
Please see Board Correspondence.
Shaina PaulsenAssociate Clerk of The BoardButte County Administration25 County Center Drive, Suite 200, Oroville, CA 95965T: 530.552.3304 | F: 530.538.7120
-----Original Message-----From: 'FERC eSubscription' <eSubscription@ferc.gov>Sent: Thursday, December 22, 2022 1:05 PM
Subject: Dam Safety Compliance Report submitted in FERC P-803-000 by Pacific Gas and Electric Company,et al.
.ATTENTION: This message originated from outside Butte County. Please exercise judgment before opening attachments, clicking on links, or replying..
On 12/22/2022, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.:
Filer: Pacific Gas and Electric Company Pacific Gas & Electric Company (as Agent)
Docket(s): P-803-000Lead Applicant: Pacific Gas and Electric CompanyFiling Type: Dam Safety Compliance ReportDescription: Pacific Gas and Electric Company submits Status Update to address Follow-up Item 6 from the 2019 Annual Dam Safety Inspection of the Hendricks Head Dam part of the DeSabla-
Centerville Hydroelectric Project under P-803.
To view the document for this Filing, click here https://urldefense.com/v3/__https://elibrary.ferc.gov/eLibrary/filelist?accession_num=20221222-5230__;!!KNMwiTCp4spf!D_JSDX64xc86EjkWmZeOLpOSGJ69ofxJuah3titfIf7KfhOPmKaz_0kUcrydDjhbm8Di1TdbEBYRrse4ycn-HLhm6mnwIL7_7Psq$
To modify your subscriptions, click here:https://urldefense.com/v3/__https://ferconline.ferc.gov/eSubscription.aspx__;!!KNMwiTCp4spf!D_JSDX64xc86EjkWmZeOLpOSGJ69ofxJuah3titfIf7KfhOPmKaz_0kUcrydDjhbm8Di1TdbEBYRrse4ycn-HLhm6mnwIMVkFY4i$
------------------------------------------------------------------------Please do not respond to this email.
Online help is available here:https://urldefense.com/v3/__http://www.ferc.gov/efiling-help.asp__;!!KNMwiTCp4spf!D_JSDX64xc86EjkWmZeOLpOSGJ69ofxJuah3titfIf7KfhOPmKaz_0kUcrydDjhbm8Di1TdbEBYRrse4ycn-HLhm6mnwIO8F_U4v$or for phone support, call 866-208-3676.
Power Generation
77 Beale Street
San Francisco, CA 94105
Mailing Address:
Mail Code N11D
P.O. Box 770000
San Francisco, CA 94177
December 22, 2022
Via Electronic Submittal (E-File)
Frank L. Blackett, P.E., Regional Engineer
Federal Energy Regulatory Commission
Division of Dam Safety and Inspections
100 First Street, Suite 2300
San Francisco, CA 94105-3084
RE: DeSabla-Centerville Hydroelectric Project, FERC No. 803-CA
Hendricks Head Dam, NATDAM No. CA00702
2019 Annual FERC Inspection – Status Update for Follow-up Item 6
ENCLOSURE CONTAINS CUI//CEII – DO NOT RELEASE
Dear Frank L. Blackett:
This letter presents Pacific Gas and Electric Company’s (PG&E) status update on the
Federal Energy Regulatory Commission’s (FERC) Follow-up Item 6 (Item 6) from the 2019
annual FERC dam safety inspection of PG&E’s DeSabla-Centerville Hydroelectric Project,
FERC No. 803. FERC inspected the project facilities with PG&E personnel on July 8–9,
2019, and identified follow-up items from the inspection in a letter to PG&E, dated October
15, 2019. PG&E provided our initial plan and schedule to address Item 6 in a letter to
FERC dated May 29, 2020. PG&E’s most-recent correspondence regarding Item 6, an
extension of time request, was provided in a letter to FERC dated May 26, 2022.
PG&E’s status update and plan and schedule for further actions to address Item 6 are
enclosed with this letter (Enclosure 1). An inspection summary report for the spillway at
Hendricks Head Dam, prepared by Voss Laboratories, is provided in Enclosure 2. PG&E
has reviewed Voss Laboratories’ inspection summary report and concurs with the findings
and conclusions presented therein.
Should you have technical questions concerning this matter, please contact PG&E’s dam
safety engineer, Kaitlyn Daniels, at (707) 342-7885. For general questions, please contact
Frank L. Blackett, P.E. Regional Engineer
December 22, 2022
Page 2
PG&E’s license coordinator, Jackie Pope, at (530) 254-4007.
Sincerely,
Robert O. Ellis, P.E., G.E.
Deputy Chief Dam Safety Engineer
Enclosures:
1. Status Update to Address Follow-up Item 6 from the 2019 Annual FERC Dam Safety
Inspection
2. Hendricks Head Dam – Concrete Condition Assessment, prepared by Voss Laboratories
and dated September 21, 2022 - CUI//CEII – DO NOT RELEASE
ENCLOSURE 1
Enclosure 1
1
DeSabla-Centerville Hydroelectric Project, FERC No. 803-CA
Hendricks Head Dam, NATDAM No. CA00702
Status Update to Address Follow-up Item 6 from the
2019 Annual FERC Dam Safety Inspection
In a letter to Pacific Gas and Electric Company (PG&E) dated October 15, 2019, the
Federal Energy Regulatory Commission (FERC) provided findings and Follow-up Item 6
(Item 6) identified during the 2019 annual FERC dam safety inspection of PG&E’s
DeSabla-Centerville Hydroelectric Project, FERC No. 803. Item 6 is regarding
Hendricks Head Dam. For reference, Item 6 is copied below, followed by PG&E’s status
update.
Item 6:
A large concrete spall with exposed reinforcement was observed on the concrete
step of the dam. Additionally, concrete deterioration with exposed reinforcement was
also observed at the downstream edge of the crest. Provide a plan and schedule for
repairing the damaged concrete in these areas.
PG&E retained Voss Laboratories (VL) to perform nondestructive testing and a
condition assessment of the concrete within the spillway at Hendricks Head Dam where
spalling and exposed reinforcement were noted during the 2019 FERC dam safety
inspection. VL assessed the concrete on September 8, 2022, and a copy of the
condition assessment report is included with this filing. The investigation findings
indicate that abrasion erosion on the upper and lower sections of the spillway have led
to the observed spalling and exposure of the reinforcing steel. VL recommends
completing partial depth repairs for the areas of concrete with significant section loss
and where reinforcement is exposed. PG&E concurs with the findings and
recommendations in VL’s report and has initiated a project to perform the recommended
repairs. The project is planned to be designed in 2023/2024 with construction occurring
in 2025. PG&E plans to submit a construction authorization request and supporting
documentation to FERC by June 30, 2024.