HomeMy WebLinkAbout5.17.22 Board Correspondence - FW_ Progress Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company,et al. (2)
From:Paulsen, Shaina
To:BOS
Subject:Board Correspondence - FW: Progress Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company,et al.
Date:Tuesday, May 17, 2022 7:58:29 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
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Sent: Tuesday, May 17, 2022 5:15 AM
Subject: Progress Report submitted in FERC P-2107-000 by Pacific Gas and Electric Company,et al.
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On 5/17/2022, the following Filing was submitted to the Federal Energy Regulatory Commission (FERC), Washington D.C.:
Filer: Pacific Gas and Electric Company
PG&E Corporation (as Agent)
Docket(s): P-2107-000
Lead Applicant: Pacific Gas and Electric Company
Filing Type: Progress Report
Description: Pacific Gas and Electric Company submits Final Construction Report for the Poe Powerhouse River Access Project
under P-2107.
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245 Market Street
tƚǞĻƩ DĻƓĻƩğƷźƚƓ
San Francisco, CA 94105
Mailing Address:
Mail Code N11D
P.O. Box 770000
San Francisco, CA 94177
May 16, 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: Poe Hydroelectric Project, FERC No. 2107-CA
Poe Powerhouse River Access Project
Final Construction Report
Dear Frank L. Blackett:
This letter presents (PG&E) Final Construction Report
for the Poe Powerhouse River Access Recreational Enhancement Project, which is part of
2107. In a letter dated August 11, 2021, FERC authorized PG&E to proceed with
construction and requested that PG&E file a brief construction report summarizing work
and unusual conditions within 90 days of construction completion. In an order dated
February 28, 2022, FERC expanded the final construction report requirements to include
documentation of improvements as identified in the Recreation Enhancement Plan through
photographs, drawings, or other methods. The construction was completed February 14,
2022.
Enclosure 1 contains the Final Construction Report.
coordinator, Sky Ramirez-Doble, at (530) 250-7002.
Sincerely,
Joseph Landucci
Manager, Power Generation Project Engineering
Enclosure:
1. Final Construction Report, prepared by PG&E, dated May 2022.
POE RECREATIONAL ENHANCEMENT
PROJECT
POE POWERHOUSE RIVER ACCESS
POE HYDROELECTRIC PROJECT, FERC NO. 2107
FINAL CONSTRUCTION REPORT
PREPARED BY: JANIS BOULANT
POWER GENERATION DEPARTMENT DATE: MAY 2022
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
TABLE OF CONTENTSPAGE
1. GENERAL ............................................................................................................ 1
1.1 Background .............................................................................................. 1
1.2 Summary of Construction Chronology .................................................. 1
1.3 Construction Difficulties ......................................................................... 2
1.4 Original Structure Findings .................................................................... 2
2. FOUNDATIONS ................................................................................................... 2
3. EMBANKMENTS .................................................................................................2
4.CONCRETE WORK.............................................................................................3
5. ANCHORS........................................................................................................... 3
6. INSTRUMENTATION ........................................................................................... 3
7. DRAWINGS.......................................................................................................... 3
APPENDICES
A. As-Built Drawings
B. Photographs
C. Construction Certifications
Quality Control Manager
Design Engineer
Licensee
D. Testing Results
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
1.GENERAL
1.1 Background
The Poe Powerhouse River Access Project (Project) site is part of the Poe Recreational
Enhancement Project, which contains six separate recreational enhancement sites located within
the Poe Hydroelectric Project No. 2107. The recreational project sites are located along the
North Fork Feather River (NFFR), upstream of Lake Oroville, in Butte County between Cresta
Powerhouse and Poe Powerhouse.
The purpose of the Project was to improve access to NFFR for recreational users, including
parking and restrooms. The Project improvements included the following key features:
Parking for both passenger vehicles and vehicles with small watercraft trailers.
Paved access road from Poe Powerhouse Road to the parking area.
Concrete pad for portable seasonal ADA toilet and wash station.
ADA paved parking.
Bear-resistant trash enclosure.
No-swim buoy to rope off powerhouse tailrace.
Information kiosk and signage.
Rock slope protection (RSP) to protect fill slopes from high flows.
The as-built drawings are included in Appendix A. Refer to Appendix B for photographs taken
during construction.
1.2 Summary of Construction Chronology
PG&E’s general construction (GC) crew performed all the construction work except hot mixed
asphalt (HMA), which was done by Teichert Construction. The following is a summary of
construction events:
Construction started on the week of October 18, 2021.
Fill-slope keyway excavations along the access road and day use parking area began
October 23, 2021. Keyway excavations progressed at about 15 to 20 linear feet per day
and were backfilled with a mixture of ½-ton and 1-ton RSP placed over filter fabric.
Parking area grading began November 4,2021.
Access road grading began November 6, 2021.
Keyway excavations were completed November 19, 2021.
Pedestrian access ramp grading began November 29, 2021.
Concrete was placed on December 12, 2021, for the no-swim buoy anchor block, bollard
footings, and signage.
Access road, parking area, and pedestrian access ramp grading completed December 11, 2021.
Access road and accessible parking area was paved January 13, 2022.
Concrete pad for restrooms was placed in January 2022.
Bear-resistant trash receptacle and access road striping completed February 10, 2022.
See Appendix C for construction certifications.
1
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
1.3Construction Difficulties
The AFC drawings provided the option to anchor the no-swim buoy to bedrock in lieu of
anchorage into a new concrete block. Dave Cymanski, the project Geotechnical Engineerwith
KC Engineering, evaluated a bedrock outcroppingat the east no-swim buoy anchor and
determined itto be intact, very hard, and capable of supporting imposed anchorage loads. This
allowed for the use of alternate grouted rock bolt anchorsin place of the specified anchor block.
In addition, it was decided to increase the size of the trash receptable concrete pad in order to
provide a location to install anchors for the portable toilet and wash station.
The only other notable change was removal of the AC curbs along the access road. The curbs
did not follow proper alignment as shown on the plans, reducing the clear distance between curbs
and affecting safe traffic passage. The curbs were replaced with a white painted line to delineate
the edge of road. Three-inch crushed rock shoulder backing was placed over filter fabric to
mitigate erosion concerns over not having curbs.
All of these changes are depicted in the as-built drawings in Appendix A.
1.4 Original Structure Findings
Original structure findings are not applicable to this construction project.
2. FOUNDATIONS
Foundations are not applicable to this construction project.
3. EMBANKMENTS
This project included embankment work to facilitate the widening of the old, undeveloped access
road and parking area.
A CAT 336 excavator was used to excavate the Project’s keyways to a depth ranging from 3 feet
to 10 feet per the Geotechnical Engineer’s recommendations. The excavator was used to place
and tamp ½-ton and 1-ton RSP fill over Mirafi 1100NC filter fabric per the plans.
Volvo A45G rock trucks were used to deliver the various project materials and remove
construction site spoils.
A CAT D6 dozer was used to excavate the day use parking area to subgrade. The dozer was
used to spread 3-inch crushed rock to rough grade and Class 2 aggregate base to finish grade
over the day use parking area and access road. The Class 2 aggregate base was placed over
Mirafi 180N filter fabric over the 3-inch crushed rock.
A Case skip loader was used to rough grade the day use parking area along the perimeter using a
box scraper attachment to reach spots the dozer could not. The skip loader was used to construct
the pedestrian access by placing 3-inch crushed rock to rough grade and Class 2 aggregate base
to finish grade. The Class 2 aggregate base was placed over Mirafi 180N filter fabric placed
over the 3-inch crushed rock.
2
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
A HAMM H10i smooth drum roller was used to compact both the 3-inch crushed rock and Class 2
aggregate base. A CAT backhoe was used to place ±24-inch rocks to form the traffic barrier along
the access road.
Compaction test results are summarized below. Complete test results are provided in Appendix D.
TABLE 1
COMPACTIONSAMPLING AND TESTING SUMMARY
(1)(2)(3)
Date Moisture Content Dry Unit Weight Relative Compaction
Sample No.
Sampled (%) (pcf)(%)
4 12/11/20215.0 141.998
5 12/11/20214.4 141.598
6 12/11/20215.0 138.096
7 12/11/20214.3 141.998
8 12/11/20214.2 141.798
9 12/11/20213.9 139.897
10 12/11/20214.1 140.497
11 12/11/20213.8 139.497
12 12/11/20214.0 137.495
(1)
Note: Optimal moisture content specified by lab data is 7.7%.
(2)
Max dry unit weight specified by lab data is 144.3 pcf.
(3)
Minimum relative compaction specified in the Construction Documents is 95%.
4. CONCRETE WORK
This project only included minor concrete work.
The concrete restroom pad,no-swim buoy anchor block, and post footings were the extent of
concrete construction. The concrete mix design was provided by the ready-mix supplier,
Mathews Readymix LLC. Itwas reviewedand acceptedby PACE Engineering, Inc. and PG&E.
As mentioned in section 1.3, the trash receptacle concrete pad was increased from 3’x3’x6” to
10’x18’x6” to accommodate the restroom.
5. ANCHORS
Only minor rock anchors were at one location to anchor the east end of the no-swim buoy to
bedrock. These rock anchors consisted of two ¾-inch-diameter galvanized threaded rods
embedded three feet into bedrock. The anchors were grouted in 2-inch-diameter holes using
Five Star Fluid Grout 100.
6. INSTRUMENTATION
Instrumentation is not applicable to this construction project.
7. DRAWINGS
As-built drawings have been reduced to 11”x17” and are included in Appendix A of this report.
3
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
APPENDIX A
AS-BUILT DRAWINGS
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
APPENDIX B
PHOTOGRAPHS
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 1 - View of Construction Site Looking Upstream
Prior to Start of Construction (10/22/2021)
Photo 2 - Keyway Test Pit with Groundwater
(10/23/2021)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 3 - Bedrock Outcrop Anchor Point in Lieu of
No-Swim Buoy East Anchor Block (10/23/2021)
Photo 4 - CAT 336 Excavator Excavating Keyway
(10/30/2021)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 5 -Excavated Keyway Lined with Filter Fabric
(10/31/2021)
Photo 6 - Excavator Placing RSP Fill Over Filter Fabric
(11/02/2021)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 7 - Excavator Continues Excavation of Keyway.
Keyway Excavation Nearing Completion (11/07/2021)
Photo 8 - RSP Slope-Fill at Construction Site Looking
Downstream (11/15/2021)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 9 - CAT D6 Dozer Spreading 3” Minus Material
Over Parking Area (11/23/2022)
Photo 10 - HAMM H10i Smooth Drum Roller
Compacting Parking Area (12/06/2021)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 11 - West No-Swim Buoy Anchor Forms
Stripped and Backfilled (12/13/2021)
Photo 12 - Access Road with Rock Traffic Barrier
Placed (1/11/2022)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 13 - Construction Crew Preparing to Pave ADA
Parking Spot and Access Road (1/13/2022)
Photo 14 - Day Use Parking Area Access Road Striped
(2/10/2022)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
Photo 15 - Bear-Resistant Trash Enclosure Installed and
ADA Parking Spot Painted (2/10/2022)
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
APPENDIX C
CONSTRUCTION CERTIFICATIONS
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APPENDIX J
CERTIFICATION
By Licensee
CERTIFICATION OF CONSTRUCTION
FERC Project No.: _2107_
Description: _Poe Recreational Enhancement Project – Poe Powerhouse Site_____________________________
Design Drawings/Specifications:
PG&E Drawing List
Drawing NumberDrawing Title
3103200
3103201
3103202
3103203
3103204
3103205
Quality Control and Inspection Program (QCIP), Dated: _04/29/2021____________________
This is a certification by the Licensee that the construction fulfills the design intent and was constructed in
accordance with the plans and specifications reviewed by the FERC. (per written request by FERC)
*******************************************************************************************
A notary public or other officer completing this certificate verifies only the identity of the individual who
signed the document to which this certificate is attached, and not the truthfulness, accuracy, or validity of
that document.
VERIFICATION
STATE OF CALIFORNIA \]
COUNTY OF \], SS:
The undersigned, being first duly sworn, states that he/she has read the above document and knows the
contents of it, and that all of the statements contained in that document are true and correct, to the best of
his/her knowledge and belief. (per 18CFR Part 12, Paragraph 12.13)
For Licensee (Print Name)
__________________________________________
Signature
\[STAMP\]
Subscribed and sworn to (or affirmed) before me on this
day of , 20___, by
,
Proved to me on the basis of satisfactory evidence to be the
person (s) who appeared before me.
.
NOTARY PUBLIC \[SEAL\]
J-1
Poe Powerhouse River Access – Poe Hydroelectric Project, FERC No. 2107
May 2022 – Final Construction Report
APPENDIX D
TESTING RESULTS