HomeMy WebLinkAbout01.14.21 BOS Correspondence - FW_ General Correspondence issued in FERC P-803-000
From:Schuman, Amy
To:Alpert, Bruce;Bennett, Robin;Clerk of the Board;Connelly, Bill;Cook, Holly;Cook, Robin;Kimmelshue, Tod;
Lambert, Steve;Lucero, Debra;McCracken, Shari;Paulsen, Shaina;Pickett, Andy;Ring, Brian;Ritter, Tami;
Rodas, Amalia;Sweeney, Kathleen;Teeter, Doug
Subject:BOS Correspondence - FW: General Correspondence issued in FERC P-803-000
Date:Thursday, January 14, 2021 1:39:24 PM
See the email below from FERC.
Amy Schuman
Associate Clerk of the Board
Butte County Administration
25 County Center Drive, Suite 200, Oroville, CA 95965
O: 530.552.3300 |D: 530.552.3308 | F: 530.538.7120
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From: 'FERC eSubscription' <eSubscription@ferc.gov>
Sent: Thursday, January 14, 2021 1:15 PM
Subject: General Correspondence issued in FERC P-803-000
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On 1/14/2021, the Federal Energy Regulatory Commission (FERC), Washington D.C., issued this document:
Docket(s): P-803-000
Lead Applicant: Pacific Gas and Electric Company
Filing Type: General Correspondence
Description: Letter to Pacific Gas and Electric Company providing comments on the 2019 Dam Safety
Surveillance and Monitoring Plans and Reports for Round Valley, Philbrook, and DeSabla Forebay Dams, part of
the DeSabla-Centerville Project under P-803.
To view the document for this Issuance, click here
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FEDERAL ENERGY REGULATORY COMMISSION
Office of Energy Projects
Division of Dam Safety and Inspections San Francisco Regional Office
100 First Street, Suite 2300
San Francisco, CA 94105-3084
(415) 369-3300 Office (415) 369-3322 Facsimile
January 14, 2021
In reply refer to:
Project No. 803-CA
Mr. Jan Nimick, Vice President
Pacific Gas and Electric Company
Mail Code: N11E
PO Box 770000
San Francisco, CA 94177-0001
Re: 2019 Dam Safety Surveillance and Monitoring Plans and Reports for Round Valley,
Philbrook, and DeSabla Forebay Dams
Dear Mr. Nimick:
This is in response to a letter dated April 7, 2020 from Mr. Neil Wong that
submitted the 2019 Dam Safety Surveillance and Monitoring Plans and Reports
(DSSMPs/Rs) for Round Valley, Philbrook, and DeSabla Forebay Dams, which are part
of the DeSabla-Centerville Project, FERC No. 803. We have reviewed the DSSMPs/Rs,
and our comments are listed in the enclosure.
Please incorporate our comments into your surveillance and monitoring program
and/or your next annual DSSMP/R submittal, as appropriate. We appreciate your
continued efforts dam safety program. If you have
questions, please contact Mr. Michael Vail at (415) 369-3346.
Sincerely,
Frank L. Blackett, P.E.
Regional Engineer
Enclosure
FERC Comments on the 2019 DSSMPs/Rs Enclosure
for the DeSabla-Centerville Project (P803)
Round Valley Dam
1. Some of the Appendix A figures, such as Figures A-5 and A-7, do not appear to
show the current configuration of the dam including the downstream stability
berm (compare these figures with Figure A-10, for instance). Please review the
Appendix A figures and revise or replace them as needed in your next annual
DSSMP/R submittal to display the instrumentation locations on figures showing
the current configuration of the dam.
2. As recommended (R-6) in the Second Part 12D report, new threshold and action
levels should be established for Weir BW--
monitoring procedures. Please include updated threshold and action levels for this
weir in your next annual DSSMP/R submittal.
3. Table 7-1 l-standpipepiezometer; however, page
two ease
revise the description of this piezometer as needed in your next annual DSSMP/R
submittal so that the descriptions are consistent.
4. In view of the high-downstream hazard potential classification, historical seepage,
observed spillway damage and deficiencies, and uncertain foundation conditions,
we continue to encourage PG&E to consider installing survey monuments at the
dam to monitor for horizontal and vertical movement, as recommended in our
October 15, 2019 inspection follow-up letter.
Philbrook Dam
5. -4 of the
DSSMP/R, recommended that Piezometer BE-87 (3A) be evaluated for potential
repair due to the damaged casing, pipe, and concrete base. In your next annual
piezometer, if any.
DeSabla Forebay Dam
No comments.
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