HomeMy WebLinkAbout01.26.21 BOS Correspondence - FW_ Project Operations Compliance Report submitted in FERC P-803-000 by Pacific Gas and Electric Company,et al.
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: Project Operations Compliance Report submitted in FERC P-803-000 by Pacific Gas and Electric
Company,et al.
Date:Tuesday, January 26, 2021 2:43:53 PM
Please see the email correspondence below.
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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-----Original Message-----
From: 'FERC eSubscription' <eSubscription@ferc.gov>
Sent: Tuesday, January 26, 2021 2:15 PM
Subject: Project Operations Compliance Report submitted in FERC P-803-000 by Pacific Gas and Electric Company,et al.
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On 1/26/2021, 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-803-000
Lead Applicant: Pacific Gas and Electric Company
Filing Type: Project Operations Compliance Report
Description: Pacific Gas and Electric Company proposed improvements to the seepage collection and monitoring system,
including replacement of an existing seepage monitoring weir at Philbrook Dam for 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?
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January 26, 2021
Via Electronic Submittal (E-file)
Mr. 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: DeSabla-Centerville Hydroelectric Project, FERC No. 803-CA
Philbrook Dam, NATDAM No. CA00345
Authorization Request for Installation of New Weir
ENCLOSURES CONTAIN CUI//CEII DO NOT RELEASE
Dear Mr. Blackett:
for proposed improvements to the seepage collection and monitoring system,
including replacement of an existing seepage monitoring weir at Philbrook Dam,
which is part of PG&DeSabla-Centerville Hydroelectric Project, Federal
Regulatory Commission (FERC) No. 803.The proposed improvements were initiated
th
to address Recommendation 5 (R-5-2015) from the 10 Part 12D safety inspection
report for the dam, dated October 2015. status update on its
efforts to address R-5-2015 was provided in a letter to your office dated May 30,
2020.
For reference, R-5-2015 reads as follows:
R-5-2015: PG&E should improve seepage collection at Weir BW-44A on the left
groin of the Main Dam. Approximately 10-15 percent of seepage flow was
observed to be bypassing the weir. Additional guidance for the field operators to
observe seepage conditions at the lower right abutment of the Main Dam is
suggested.
th
Following the 11 Part 12D safety inspection of Philbrook Dam in 2020, the
independent consultant (IC) issued a follow-up recommendation (R-5-2020)
Mr. Frank L. Blackett, P.E., Regional Engineer
January 26, 2021
Page 2
pertaining to the proposed seepage collection improvements. PG&E provided its plan
and schedule to address R-5-2020 in a letter to your office dated December 31,
2020.
For reference, R-5-2020 reads as follows:
R-5-2020: It is recommended that PG&E complete the on-going seepage
collection improvements to capture and monitor seepage from the right abutment
and left abutment. It is my understanding that the project includes a new drain to
capture and convey seepage from the right abutment and downstream slope to a
new weir alongside existing Weir BW-44A. It also includes improvements to the
seepage collection on the left abutment to better capture and measure seepage in
Weir BW-44A.
In support
please find the project description (Enclosure 1), approved-for-construction drawings
(Enclosure 2), the quality control and inspection program (QCIP) (Enclosure 3), and
il construction specifications (No. 6064) (Enclosure 4), enclosed
in this letter for FERC review.
As described in the enclosed documents, PG&E plans the following improvements to
the seepage collection and monitoring system at the Philbrook main dam:
Regrading areas along the lower left groin of the dam to capture and direct
seepage flows toward Weirs BW-44A and BW-44
Replacing the existing 12-inch rectangular Weir BW-44 with a new v-notch weir
Installing a new drain to collect and convey seepage from the right toe and groin
of the dam to Weir BW-44
The proposed improvements are intended to address R-5-2015 and R-5-2020 and
improve the effectiveness and reliability of the seepage monitoring system at the
main dam. PG&E plans to mobilize crews to the site as early as mid-July and begin
construction of the proposed improvements on August 2, 2021, pending regulatory
authorization to proceed with the work. PG&E expects construction of the proposed
improvements to take about one month.
Ongoing shelter-in-place orders issued by the State of California in response to the
COVID-19 pandemic require that nonessential PG&E staff work remotely, and hard
copy filings are not practical at this time. If FERC requires two hard copies of the
project documents, please provide this request in your response and copies will be
sent after the shelter-in-place restrictions have been lifted and PG&E staff have
returned to their normal work locations.
Mr. Frank L. Blackett, P.E., Regional Engineer
January 26, 2021
Page 3
If you have any technical questions concerning this matter, please contact
dam safety engineer, Ms. Kaitlyn Thatcher, at (707) 342-7885, senior
project engineer, Mr. Jonathan Edwards, at (530) 896-4400. For general comments
senior license coordinator, Ms. Jamie Visinoni,
at (530) 215-6676.
Sincerely,
David L. Ritzman, P.E., G.E.
Chief Dam Safety Engineer
Enclosures: CUI//CEII DO NOT RELEASE
1. Project Description, Philbrook Dam Weir Project, prepared by PG&E, dated
December 30, 2020
2. Approved-for-Construction Drawings and Specifications for the Philbrook Weir
Project, prepared by PG&E, dated November 20, 2020
3. Quality Control and Inspection Program for Philbrook Dam Install New Weir, prepared
by PG&E, dated December 16, 2020
4. PG&E Specifications 6064, dated April 9, 2012