CleanPowerSF Sfpuc Commission
March 28, 2023

1 Hetch Hetchy Capital Improvement Program
Q2 | FY 2022
–
2023
March 28, 2023
Randy Anderson, Project Manager
Mountain Tunnel Improvement Project
Infrastructure Division
Planning (6),
$185M
Design (2),
$57M
Bid & Award
(0), $0
Construction (4),
$314M
Closeout (2),
$24M
Completed (0),
$0
Multiple Phase (2),
$209M
Not
Initiated (1),
$16M
$806M
(17 Projects)
* Excluded 3 Project
Development Accounts ($56M)
Project Count by Phase*
HCIP Program Status (as of December 2022)
27%
% Complete
Expenditures

HCIP Program Cost Summary
(from Table 3)
3 Program Name
Expenditures
to Date
($Million)
Expenditures
During Q2
($Million)
Current
Approved
Budget
($Million)
Current
Forecasted
Cost
($Million)
Cost
Variance
($Million)
Water
Infrastructure $15 $2 $156 $155 ($1)
Power
Infrastructure $72 $3 $205 $217 $12
Joint
Infrastructure $125 $10.5 $501 $524 $23
Overall HCIP $211 $15.5 $862 $896 $34
HCIP Budget and Schedule Variances
Project Forecast
Cost
Budget
Variance
Forecast
Completion
Schedule
Variance Phase Reason for
Variance(s)
Moccasin
Powerhouse
Bypass
Upgrades
$27.4M $12.4M - - Planning Scope
Refinement/Modification
Moccasin WW
Treatment
Plant
$12.0M $3.2M - - Design Scope
Refinement/Modification
Cherry Dam
Spillway –
Short Term
Improvement
$24.9M $13.0M 11/1/27 4 months Planning Scope Addition (Budget and Schedule Variances)
Canyon Tunnel
Rehabilitation $15.0M $6.6M 12/30/26 4 months Planning
Scope
Refinement/Modification
(Budget Variance); Contract
Procurement (Schedule
Variance)
Bridge
Replacement - - 12/30/27 6 months Planning Environmental Approval and Permitting
4 Moccasin Powerhouse (MPH) and
Generator Step Up Transformer (GSU)
Rehabilitation
5 Progress and Status:

A) Step Up Transformers:
• GSU No. 2 delivered to Moccasin in
October for installation in Q3.

B) Generators Rewind:
• Decision in December to delay
Generator M2 Rewind by one year due
to procurement delays.

C) Powerhouse Systems Upgrade:
• Construction cost estimate in draft
Conceptual Engineering report higher
than budgeted due to scope refinement.

Approved Budget: $66.7M
Forecast Completion: Dec 2027
Current Phase: Multiple Phases
Expended to Date: $20.2M (Q2: $1.6M)
Variances:
• $0
• 0 days
MPH GSU2 (Delta Star F8628) delivered
and installed in temporary location.

Moccasin Penstock Rehabilitation
6 Approved Budget: $47.3M
Forecast Completion: February 2028
Current Phase: Planning
Expended to Date: $6.0M (Q2: $0.1M)
Variances:
• $0
• 0 days
Progress and Status:
• Condition assessment testing on
hammer-forged-welded-steel
sections of penstock revealed
cracks.
• Five internal workshops to discuss
implications.
• Penstock replacement alternatives
to be considered in Q3.

Scaffolding for Phased Array
Ultrasonic Testing in October.

Mountain Tunnel Improvements
7 Progress and Status:
• Completed all initial lining and first stage,
bottom 20 feet working up, final lining of
Flow Control Facility shaft.
• Priest Adit tunnel 20 feet from Mountain
Tunnel; outage tie-in planned.
• Priest Adit bulkhead door pressure tested
in situ.
• Completed water conveyance piping
within bypass tunnels.
• Fabrication of double disc knife gate
valves completed off-site.
• Rickson Road improvement 95% done.

Approved Budget: $238.2M
Forecast Completion: June 2027
Current Phase: Construction
Expended to Date: $99.5M (Q2: $7.9M)
Variances:
• $0
• 0 days
Looking down into the Flow Control
Facility Shaft in November;
preparing for final lining.

Mountain Tunnel Improvements
Water Pipes in Flow Control Shaft
8 Mountain Tunnel Improvement
New Priest Adit
9 Mountain Tunnel Improvement
New Priest Adit Tunnel and Bulkhead
10 Mountain Tunnel Improvement
Roadway Improvements
11 Road Improvement work at Adit 5/6
access road. Constructing a new
retaining wall
Road Improvement work at South Fork
access road. Removing loose boulders
from the upslope

QUESTIONS?

OUR MISSION: To provide our customers with high-quality, efficient and reliable water, power and sewer services in a manner that values environmental and community interests and sustains the resources entrusted to our care.

525 Golden Gate Avenue, 13th Floor
San Francisco, CA 94102
T 415.554.3155
F 415.554.3161
TTY 415.554.3488

DATE: March 20, 2023

TO: Commissioner Newsha Ajami, President
Commissioner Sophie Maxwell, Vice President
Commissioner Tim Paulson
Commissioner Anthony Rivera
Commissioner Kate Stacy

FROM: Dennis J. Herrera, General Manager

RE: Hetch Hetchy Capital Improvement Program Quarterly Report Quarterly Report (2 nd Quarter / FY 2022-2023)

Enclosed please find the Hetch Hetchy Capital Improvement Program (HCIP) Quarterly Report for the 2 nd Quarter (Q2) of Fiscal Year (FY) 2022-2023. The primary intent of the report is to provide the Commission, stakeholders, and the public with a status summary of the HCIP based on data for the period of October 1, 2022 to December 31, 2022.

Attachment

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QUARTERLY REPORT
Hetch Hetchy Capital Improvement Program
October 2022 – December 2022
Published: March 20, 2023
DRAFT

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i
HCIP Quarterly Report Q2-FY2022-2023 (10/01/22– 12/31/22)

EXECUTIVE SUMMARY
This quarterly report provides a summary update on the Hetch Hetchy Capital Improvement Program (HCIP) that is part of the larger Hetch Hetchy Water Capital Improvement Program. The primary intent of the report is to provide the Commission, stakeholders, and the public with a status summary of the HCIP based on data for the period of October 1, 2022 to December 31, 2022.

This quarterly report includes all approved HCIP projects in the Hetch Hetchy Water Capital Improvement Program according to the 10-Year Capital Plan for FY2022-23 to FY2031-32, presented to and adopted by the Commission on February 8, 2022 (2022 HCIP).

There are seventeen (17) projects in the 2022 HCIP together with three (3) project development (PD) accounts for program-level expenditures for each of the Water, Power, and Joint Programs. There were no projects added or removed from the 2021 HCIP.

Program Current Status:

As of the end of the reporting period, the status of the 17 HCIP projects (excluding the Project Development (PD) accounts) is as follows: one (1) project not initiated, eight (8) projects in planning, design, or bid & award, four (4) projects in construction, two (2) projects that are multiple phases, and two (2) projects in closeout.

Approved Budget for Projects in Each Phase
ii
HCIP Quarterly Report Q2-FY2022-2023 (10/01/22– 12/31/22) The following Tables provide a high-level summary of the cost and schedule status for this program (including the 3 PD accounts).

Table A shows that the 2022 HCIP has a Current Approved Budget and Current Forecast Cost
of $862.31M and $895.94
M, respectively.
* Negative number reflects cost increases since last quarter, and positive number reflects cost reduction since last quarter.

Table B shows that the 2022 HCIP has an Approved and Forecast Completion Date of 10/30/35.

Program Key Updates:

The key updates for the HCIP include:
 For the SJPL Tesla Valve Replace ment project, the as-built drawings were finalized, and the
task order was closed out. The project has moved into closeout phase.  For the SJPL Valve and Safe Entry Improvements project, on Phase 1A, the 60-inch and 24- inch diameter valves were delivered to the contractor’s shop and are ready to be installed during the Q3 planned system shutdown. For Phase 1B, construction Notice to Pr oceed was granted on November 7 and the contractor started submittals for long-lead items. For Phase 2, 65% design was achieved in November. For Phase 3, the team obtained consensus to move forward with the surge tower design alternative without a detention basin.  For the Moccasin Powerhouse Bypass Upgrades project, conceptual engineering report (CER) work continued and is anticipated to be complete next quarter. The preferred alternative is to Table A. Program Cost Summary
Program
Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q2/FY22-23
Forecast
Costs
($ Million)
(C)
Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E)
Program Total $211.21 $862.31 $895.94 ($33.63) ($33.63) Table B. Current Approved vs. Current Forecast Schedule Dates Program
Current
Approved
Project
Start
Actual*
Start
Current
Approved
Completion
Current
Forecast
Completion
Schedule
Variance
(Months)
Overall
HCIP Program 10/03/11 10/30/35 10/30/35 -
* “A” represents the actual date.
10/03/11A

iii
HCIP Quarterly Report Q2-FY2022-2023 (10/01/22– 12/31/22) move the bypass system to a location north of the Moccasin penstocks. Design phase to begin in February 2023.
 For Moccasin Powerhouse (MPH) and Generator Step-Up (GSU) Rehabilitation project, subproject A, HH-1003R, the second new Delta Star GSU2 (F8628) transformer underwent final preparations for planned interconnection in February 2023. Substantial Completion is anticipated in March 2023. For subproject B, DB-121R2, major generator components are to be delivered by March 2023. For subproject C, MPH Systems Upgrade, the final conceptual engineering report (CER) is scheduled for March 2023, and the design phase is scheduled to begin April 2023.
 For Transmission Lines 7/8 Upgrades project, the contractor prepared submittals and placed orders for long lead items, including conductor, insulators, and tower steel. Potholing to locate the existing San Joaquin Pipelines (SJPL) 1, 2, and 3 and tower ground testing began.  For O’Shaughnessy Dam Outlet Works Phase 1, subproject A (Bulkhead), the California Environmental Quality Act (CEQA) categorical exemption for the proposed work was approved by the CCSF Planning Department in December. The progressive-design-build specification and bid package (DB-135) for the design and construction of the bulkhead was completed. For Subproject B (Access & Drainage), scope is being finalized. For Subproject C (Instream Flow Release Valve Replacement), CEQA categorical exemption for the work was approved by the CCSF Planning Department in December. The 95% design was completed. For Subprojects D (Slide Gate) and E (Drum Gate), work continued on the needs assessment.  For the Mountain Tunnel Improvement project, installation of the large diameter water conveyance piping within the upstream and downstream bypass tunnels at the Priest Flow Control Facility (FCF) was completed. The final lining of concrete was installed in the bottom twenty feet of the FCF shaft. The double disc knife gate valves for the downstream bypass pipes completed fabrication. The large bulkhead door at the Priest Adit was installed and successfully pressure tested. Excavation and initial lining of the Priest Adit was progressed to about 20 feet away from the existing Mountain Tunnel in preparation for the tie-in during Outage No.2. The temporary water filtration plant at Moccasin and the water treatment plant for construction water at Priest were set up and tested. Road improvement work along Rickson Road at Priest Reservoir is approximately 95% complete. Discussions between the contractor and the City began regarding the possibility of an alternative method from that in the original design to construct the South Fork Siphon Extension.
 For the Bridge Replacement subproject Lake Eleanor Dam Bridge, work on the alternatives analysis report (AAR) continued. For subproject O’Shaughnessy Adit Access Bridge, the project team finalized the AAR after review and approval by the Technical Steering Committee.

The team worked on a conceptual design of the selected alternative and the related environmental aspects including wetland delineation, owl survey, ambient noise measurement, archeological survey, historic resources evaluation, and golden eagle nest survey.  For the Canyon Tunnel Rehabilitation project, the updated conceptual engineering report (CER) was under development to incorporate the project team’s comments. The project team held a 65% design workshop and worked on update of the design drawings, memo, and technical specifications.

iv
HCIP Quarterly Report Q2-FY2022-2023 (10/01/22– 12/31/22)

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TABLE OF CONTENTS
HETCH HETCHY WATER AND POWER (HHWP) – WATER DIVISION

CAPITAL IMPROVEMENT PROGRAMS

INTRODUCTION

HETCH HETCHY CAPITAL IMPROVEMENT PROGRAM (HCIP)

1. Program Description

2. Program Status

3. Program Cost Summary

4. Program Schedule Summary

5. Budget and Schedule Trend Summary

6. Project Performance Summary

7. Project Status Report

8. On-Going Construction

9. Projects in Closeout

10. Completed Projects

APPENDICES
A. Project Descriptions
B. Approved Project Level Schedules/Budgets
C. List of Acronyms

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HETCH HETCHY WATER AND POWER (HHWP)–

WATER DIVISION CAPITAL IMPROVEMENT PROGRAMS

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HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22)

INTRODUCTION
The Hetch Hetchy Water and Power (HHWP) Water Division is the division responsible for operating, managing, and maintaining the HHWP system and facilities. This includes water facilities that are part of the Regional Water System from Hetch Hetchy Reservoir, located in Yosemite National Park, to Alameda East Portal, located in Sunol Valley and power facilities located from Early Intake to Newark.

The HHWP Water Division operates, manages, and maintains three impoundment reservoirs, three regulating reservoirs, four powerhouses, one switchyard, three substations, 170 miles of pipeline and tunnels, almost 50 miles of paved road, over 160 miles of transmission lines, watershed land, and right- of-way property. HHWP Water Division provides 85 percent of the San Francisco Public Utilities Commission (SFPUC) water supply for 2.7 million residential, commercial, and industrial customers in Alameda, Santa Clara, San Mateo, and San Francisco counties. On average, HHWP Water Division generates about 1,650 gigawatt hours (GWH) of clean hydro-generated power annually. A majority of HHWP staff is based in Moccasin, CA, which is 140 miles east of San Francisco.

The HHWP Water Division’s capital improvement pr ograms are divided into two programs: Hetch Hetchy Capital Improvement Program (HCIP) and Renewal and Replacement (R&R). This report provides a quarterly status update on the HCIP, a gr oup of capital improvement projects that are greater than $5M in value and have been approved by the Commission as part of the SFPUC’s 10-Year Capital Improvement Program. The status of the Hetch Hetchy R&R projects is reported annually in the Annual Report on Water Enterprise-Managed Capital Improvement Projects.

The map below shows the location of the assets and facilities associated with HHWP.

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HETCH HETCHY CAPITAL IMPROVEMENT PROGRAM (HCIP)

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HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22)

1. PROGRAM DESCRIPTION
The Hetch Hetchy Capital Improvement Program (HCIP) is a multi-year group of capital projects to upgrade existing, aging infrastructure so that it will meet the challenges of today and the future. These projects will deliver improvements that enhance the SFPUC’s ability to provide reliable, affordable, high quality water to its 2.7 million customers in an environmentally sustainable manner. The goals are to 1) provide capital improvements needed to cost-effectively ensure that water quality, seismic reliability, delivery reliability, and water supply objectives established for the Regional Water System facilities managed by HHWP are met, while 2) optimizing the benefits of HHWP power facilities operations.

Ongoing development of the HCIP will sustain the Regional Water System’s status as an unfiltered water source and a gravity-driven system.

The scope of HCIP is divided into three major project types: Water, Power, and Joint. The Water sub- program includes only asset improvements benefiting the SFPUC’s water customers. The Power sub- program includes only asset improvements used to generate environmentally friendly hydroelectric energy. The Joint sub-program includes projects for assets that are used for both water delivery and power generation. In addition, projects in each sub-program of the HCIP have been further organized by asset type consisting of the following:

Water Infrastructure
 Water Conveyance – projects to enhance the reliability of water delivery through pipelines and penstocks, allowing for both delivery of water to SFPUC customers and delivery of water to powerhouses for power generation.

Power Infrastructure
 Powerhouse – projects to improve facilities at the Holm, Kirkwood, and Moccasin powerhouses.  Switchyard & Substations – projects to meet operational objectives for power, including reliability, regulatory compliance, and sustainability.  Transmission Lines – projects to expand or improve power assets for electricity transmission Joint (Water and Power) Infrastructure
 Dams & Reservoirs – projects to improve assets used for storage and delivery of water to SFPUC customers, as well as for water storage for power generation.  Mountain Tunnel – projects to address deficiencies with the Mountain Tunnel, a critical, non- redundant link in the Hetch Hetchy and Regional Water System that conveys water from Kirkwood Powerhouse to Priest Reservoir.
 Roads & Bridges – projects to replace or improve bridges that are utilized to access HHWP assets.
 Tunnels – projects to repair tunnels along the HHWP system (other than Mountain Tunnel).  Utilities – projects to expand or improve utilities for asset and work locations such as water and wastewater treatment facilities.
 Buildings – projects to provide safe and code compliant work spaces.

1 HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22)

2. PROGRAM STATUS
This Quarterly Report pr
esents the progress made on HCIP between October 1, 2022 and December 31, 2022. This document
serves as the second (2nd) Quarterly Report in Fiscal Year 2022-2023 (FY23) published for the HCIP.

This quarterly report
includes all approved HCIP projects in the Hetch Hetchy Water Capital Improvement Program according to the 10-Year Capital Plan for FY2022-23 to FY2031-32 (FY23-32 CIP), presented to and adopted by the Commission on February 8, 2022, under Resolution No. 22-0031 (2022 HCIP).

There are
seventeen (17) projects in the 2022 HCIP together with three (3) project development (PD) accounts for program-level expenditures for each of the Water, Power, and Joint Programs. A description of each project and of each project development account is provided in the Appendix A of this Report.

The accrued PD expenditures are included in the
Cost Summary in Table 3 in order to give an accurate
report of the overall HCIP cost performance.

Figure 2.1 shows
the total Approved Budget for all seventeen (17) projects in each phase of the program as of
December 31, 2022 (PD accounts do not have phases and are not included in Figure 2.1). The number of projects currently in each phase is shown in parentheses.

Figure 2.1 Approved Budget for Projects in Each Phase
2 HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) Figure 2.2 shows the total number of projects in t he following stages as of December 31, 2022: Pre- construction, Construction, and Post-construction.

Figure 2.3 summarizes the environmental review status of the HCIP projects as of December 31, 2022.

Environmental review is performed for projects under California Environmental Quality Act (CEQA).

Figure 2.2 Number of Projects in Pre-construction, Construction, and Post-Construction Figure 2.3 Program Environmental Review

3 HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22)

3. PROGRAM COST SUMMARY
Table 3 provides an overall cost summary of the 17 HCIP projects and 3 HCIP PD accounts at the end of the quarter. It shows
the Expenditures to Date, Current Approved Budget, Current Forecast Cost, the Cost Variance between the Approved and Forecast
Costs, and the Cost Variance Over the
Reporting Period (from the
approved budget). The Current Approved Budget and Forecast Cost for the HCIP under the FY23-32 CIP are $862.31 million and $895.94 million, respectively. * Negative number reflects cost increases since last quarter, and positive number reflects cost reduction since last quarter.

The overall program negative forecasted Cost Variance of $33.63M in Table 3 can be attributed to the following:
 $1.16M positive variance in the Water Infrastructure group of projects is due to the following project:
o The 10035574 SJPL Tesla Valves Replacement forecasted cost decreased by $1.16M.

Table 3. Cost Summary
Subprograms
Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q2/FY22-23
Forecast
Costs
($ Million)
(C)
Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E )
Water Infrastructure $14.76 $155.87 $154.71 $1.16 $1.16 Water Conveyance (Water) $10.34 $146.40 $145.24 $1.16 $1.16 Water Infrastructure Project
Development $4.42 $9.47 $9.47 - -
Power Infrastructure $71.70 $205.30 $217.31 ($12.01) ($12.01) Powerhouse $41.19 $118.58 $130.59 ($12.01) ($12.01)
Switchyard & Substations (Power) $22.32 $34.25 $34.25 - - Transmission Lines $4.84 $37.97 $37.97 - -
Power Infrastructure Project
Development $3.33 $14.50 $14.50 - -
Joint Infrastructure $124.75 $501.13 $523.91 ($22.78) ($22.78) Water Conveyance (Joint) $6.03 $47.25 $47.25 - -
Dams & Reservoirs (Joint) $8.34 $136.88 $149.87 ($12.98) ($12.98) Mountain Tunnel $99.50 $238.22 $238.22 - -
Roads & Bridges (Joint) $2.32 $29.37 $29.37 - -
Tunnels (Joint) $1.02 $8.43 $14.99 ($6.56) ($6.56)
Utilities (Joint) $0.97 $8.79 $12.03 ($3.23) ($3.23)
Joint Infrastructure Project
Development $6.57 $32.18 $32.18 - -
Overall Program Total $211.21 $862.31 $895.94 ($33.63) ($33.63) 4 HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) • $12.01M negative variance in the Power Infrastructure group of projects is due to the combined positive and negative
variances in the following projects:
o The 10014075 Holm and Other Powerhouse Projects forecasted cost decreased by $0.37M.
o The 10036809 Moccasin Powerhouse Bypass Upgrades forecasted cost increased by
$12.38M.
• $22.78M negative variance in the Joint Infrastructure group of projects is due to the combined positive and negative variances in the following projects:
o The 10030758 OSH Dam Access and Drainage forecasted cost decreased by $0.10M. o The 10014115 Cherry Dam Spillway - Short Term Improvements forecasted cost increased by $12.99M.
o The 10032903 O'Shaughnessy
Dam Outlet Works Phase 1 forecasted cost increased by
$0.09M.
o The 10014108 Canyon Tunnel Rehabilitation forec
asted cost increased by $6.56M.
o The 10014110 Moccasin Wastewater Treatment Plant forecasted cost increased by $3.23M.

In general, the forecasted cost variances reported in this quarter align with budget adjustments proposed in the FY2024-2033 10-Year CIP; specific project variances are explained in Section 7 of this report.

4. PROGRAM SCHEDULE SUMMARY
Figure 4 and Table 4 compare the FY23 – 32 CIP Approved Schedule and the Current Forecast Schedule for the HCIP. As shown in Table 4, the overall HCIP is currently both approved and forecast to be completed in October 2035.

Figure 4. Program Schedule Summary
5 HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) * “A” represents the actual date.

5. BUDGET

AND SCHEDULE TREND SUMMARY
This Table 5 contains all approved HCIP projects that are active and in any of the planning, design, bid and award, or construction phases. The table excludes all Project Development accounts, as well as
any projects that are eith
er not-initiated, on-hold, in closeout, or completed.

During this Quarter (Q2 FY22-23), the following major project milestones were achieved:
 Project moved to Closeout phase for SJPL Tesla Valve Replacement project  Construction Notice to Proceed was granted for SJPL Valve and Safe Entry Improvement (Phase 1B)
 Environmental Approval for O'Shaughnessy Dam Outlet Works Phase I (Subproject A)  Environmental Approval for O'Shaughnessy Dam Outlet Works Phase I (Subproject C)  50% Design for O'Shaughnessy Dam Outlet Works Phase I (Subproject C)  95% Design for O'Shaughnessy Dam Outlet Works Phase I (Subproject C)  95% Design for Moccasin Wastewater Treatment Plant
Table 4. FY23-32 CIP Approved vs. Current Forecast Schedule Dates Sub-Program
CIP
Approved
Project
Start
Actual*
Start
CIP
Approved
Completion
Current
Forecast
Completion
Schedule
Variance
(Months)
Water Infrastructure 03/26/12 03/26/12 A 06/30/33 06/30/33 - Power Infrastructure 05/29/12 05/29/12 A 10/30/35 10/30/35 - Joint Infrastructure 10/03/11 10/03/11 A 06/30/33 06/30/33 - Overall
HCIP Projects 10/03/11 10/03/11 A 10/30/35 10/30/35 -
6 All Costs are shown in million
Approved
Budget
Approved
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
ab c d ef g hijkl m n
Water Infrastructure
$3.7 12/30/22 $7.4 06/28/24 $7.4 06/28/24 $7.4 06/28/24 $7.4 06/28/24 $3.7 12/30/22 $2.6 06/30/23 10035575 - SJPL Valve and Safe Entry
Improvement
Phase 1A
Phase 1B
Phase 2
Phase 3
Power Infrastructure
$15.0 12/01/27 $15.0 12/01/27 TBD TBD TBD TBD TBD TBD TBD TBD $27.4 12/01/27 10014086 - Moccasin Powerhouse and GSU
Rehabilitation
Phase 1
Phase 2
Phase 3
10014087 - Warnerville Substation Rehabilitation
Phase A (DB-127R)
Phase B
Phase C
$38.0 01/31/25 $38.0 01/31/25 $38.0 01/31/25 $38.0 01/31/25 $38.0 01/31/25 $38.0 01/31/25 $38.0 01/31/25 Joint Infrastructure
$47.3 02/28/28 $13.2 12/31/24 TBD TBD TBD TBD TBD TBD TBD TBD $47.3 02/28/28 $4.0 02/28/23 $5.8 02/26/21 $5.8 02/26/21 $5.8 02/11/22 $5.8 12/16/22 $4.0 02/28/23 $3.9 04/28/23 07/14/21 (Phase 1A),
10/29/21 (Phase 1B),
02/15/23 (Phase 2) &
04/28/23 (Phase 3)
05/16/22 (Phase 1A),
11/07/22 (Phase 1B),
11/16/23 (Phase 2) &
01/07/24 (Phase 3)
Table 5. Budget and Schedule Trend Summary
$34.2 $34.2 $34.2 $34.2$24.3
09/24/21 09/08/22
11/25/26 11/25/26 11/25/26 11/25/26
04/16/21
03/03/21 (Phase 1A),
05/28/21 (Phase 1B),
08/15/22 (Phase 2) &
12/30/21 (Phase 3)
Q2 - FY22-23
02/28/2501/31/23 02/24/23 12/26/23
05/14/21
07/29/19 (Phase 1),
10/01/19 (Phase 2) &
06/05/23 (Phase 3)
09/09/20 (Phase 1),
05/11/22 (Phase 2) &
03/29/24 (Phase 3)
06/07/21 (Phase 1),
08/15/22 (Phase 2) &
10/02/24 (Phase 3)
Q2 - FY22-23
FY23-32
$142.7 03/13/28$95.3 07/01/25 $98.9 03/13/28
Current StatusCER Awarded Construction
135% Design 95% Design
Q2 - FY22-23
11/17/20 04/06/21 Q2 - FY22-23
03/13/28
05/01/19 11/27/20 07/28/20
$142.7 03/13/28$142.7
FY23-32
09/01/15 (Phase A),
7/01/20 (Phase B) &
01/01/21 (Phase C)
$27.2$34.2 11/25/26
07/01/25
Project Initiation
7/1/2019
$66.7 12/03/27 $18.0
FY23-32
$142.7 03/13/28 $95.3
Most Recent CIP
Approved Budget
Project Name
FY23-32 09/18/2010036809 - Moccasin Powerhouse Bypass
Upgrades
FY23-32 01/04/16
10035574 - SJPL Tesla Valves Replacement
04/15/25 Q2 - FY22-23
Q2 - FY22-2303/19/2112/07/20
2 $66.7 $66.7 $66.7 12/03/2712/03/2712/03/2712/03/27
03/04/20
04/13/27
02/29/16 (Phase A),
01/18/21 (Phase B) &
01/03/23 (Phase C)
04/01/16 (Phase A),
04/22/21 (Phase B) &
09/01/23 (Phase C)
12/24/16 (Phase A),
08/16/21 (Phase B) &
04/04/24 (Phase C)
11/26/18 (Phase A),
N/A (Phase B) &
02/03/25 (Phase C)
Q2 - FY22-23
11/25/26
10/03/18 $66.7 $66.7
10030758 - OSH Dam Access and Drainage
Improvements
FY23-32 03/01/17 06/28/19 09/01/19 08/21/20
10014088 - Moccasin Penstock
FY23-32 12/11/18 12/21/23 01/31/24 06/10/24
10035721 - Transmission Lines 7/8 Upgrades
FY23-32 07/01/19
09/27/21 Q2 - FY22-23
7 All Costs are shown in million
Approved
Budget
Approved
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
ab c d ef g hijkl m n
Project Name
Project Initiation Most Recent CIP
Approved Budget Current StatusCER Awarded Construction135% Design 95% Design 10032903 - O'Shaughnessy Dam Outlet Works
Phase I3
Subproject A
Subproject B
Subproject C
Subproject D (Planning Only)
Subproject E (Planning Only)
$73.2 06/30/28 $83.2 07/01/27 TBD TBD TBD TBD TBD TBD TBD TBD $73.2 06/30/28 $11.9 07/01/27 $11.9 07/01/27 TBD TBD TBD TBD TBD TBD TBD TBD $24.9 11/01/27 $238.2 06/03/27 $114.0 12/30/21 $246.1 12/31/26 $238.2 12/31/26 $238.2 12/31/26 $238.2 06/03/27 $238.2 06/03/27 10035086 - Bridge Replacement
Subproject 1
Subproject 2
$8.4 01/13/25 $0.5 06/30/16 TBD TBD $8.0 06/30/18 TBD TBD TBD TBD $15.0 12/30/26 $8.8 04/07/26 $8.8 04/07/26 - - $8.8 04/07/26 TBD TBD TBD TBD $12.0 04/07/26 Footnotes:

1. This represents forecast project cost and project completion date at the time of award of construction contract (or award o f CM/GC or Design-Build contracts/packages).

2. This represents the date the Design Criteria Report (DCR) was finalized for Transmission Lines 7/8 Upgrade project. CER was not required for the project.

3. This represents that Contract A will be doing Progressive Design Build during Construction. Contract B is in the process of finalizing the design. Contract D & E will not be doing CER.

4. This represents that the project started during the Design Phase. 06/03/24 (Subproject 1) &
01/12/24 (Subproject 2)
04/30/25 (Subproject 1) &
07/01/25 (Subproject 2)
TBD TBD $29.4 12/30/2705/25/37$44.3 $44.3 12/30/25 TBD TBD TBD TBD TBD 10014110 - Moccasin Wastewater Treatment Plant
4 FY23-32 01/03/22
FY23-32 02/27/20 Q2 - FY22-23
FY23-32 10/03/11 12/29/17 05/15/18 07/31/19 10/13/20 Q2 - FY22-23 - 04/29/22 12/30/22 11/28/23
10014108 - Canyon Tunnel Rehabilitation
10014114 - Mountain Tunnel Improvement Project
7/18/23 (Subproject 1) &
03/17/23 (Subproject 2)
Q2 - FY22-23
TBD
FY23-32
11/03/23 (Subproject 1) &
05/05/23 (Subproject 2)
Q2 - FY22-23
01/14/25 (Subproject A),
N/A (Subproject B) &
12/23/22 (Subproject C)
10014115 - Cherry Dam Spillway - Short Term
Improvements
FY23-32 03/01/21 09/28/23 01/04/24 06/10/24 02/20/25 Q2 - FY22-23 05/08/26 Q2 - FY22-23
05/26/23 (Subproject A),
10/18/23 (Subproject B) &
06/14/23 (Subproject C)FY23-32 02/01/18
09/30/21 (Subproject A),
Complete (Subproject B),
09/30/22 (Subproject C),
N/A (Subproject D) &
N/A (Subproject E)
10/15/24 (Subproject A),
N/A (Subproject B) &
11/25/22 (Subproject C)
$47.9 $17.2 $47.909/16/25 $47.9 $48.0 TBD $48.009/16/25 09/16/25 09/16/25 TBD 10037351 - Moccasin Dam Long-Term
Improvements3
FY23-32 05/03/21 04/28/23 07/21/23 12/31/24
02/03/14 03/06/23 03/30/16 12/14/23 04/01/25 Q2 - FY22-23 09/16/2512/31/24
8 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22)

6. PROJECT PERFORMANCE SUMMARY* All costs are shown in $1,000s Project Name Active
Phase
(a)
CIP
Approved
Budget
(b)
Current
Approved
Budget
(c)
Current
Forecast
Cost
(d)
Expenditures
to Date
(e)
Cost
Variance
(f=c-d)
% Cost
Changes
(g=f/c)
CIP
Completion
Date
(h)
Approved
Completion
Date
(i)
Forecast
Completion
Date
(j)
Schedule
Variance
(Days)
(k=i-j)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
Water Infrastructure
Water Conveyance (Water)
10035575 SJPL
Valve and Safe
Entry
Improvement
MP $142,662 $142,662 $142,662 $7,965 $0 0% 03/13/28 03/13/28 03/13/28 0 Power Infrastructure
Powerhouse
10036809
Moccasin
Powerhouse
Bypass Upgrades
PL
$15,007 $15,007 $27,391 $758 ($12,384) (83%) 12/01/27 12/01/27 12/01/27 0 10014086
Moccasin
Powerhouse and
GSU
Rehabilitation
MP $66,714 $66,714 $66,714 $20,172 $0 0% 12/03/27 12/03/27 12/03/27 0 Switchyard & Substations (Power)
10014087
Warnerville
Substation
Rehabilitation
CN $34,248 $34,248 $34,248 $22,325 $0 0% 11/25/26 11/25/26 11/25/26 0 Transmission Lines
* Does not include projects in closeout, completed, not initiated,on hold, deleted projects, and projects combined with other projects. ** Phase Status Legend
PL Planning DS Design
BA Bid & Award CN Construction MP Multiple-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY23-32.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY23-32, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 9 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) Project Name Active
Phase
(a)
CIP
Approved
Budget
(b)
Current
Approved
Budget
(c)
Current
Forecast
Cost
(d)
Expenditures
to Date
(e)
Cost
Variance
(f=c-d)
% Cost
Changes
(g=f/c)
CIP
Completion
Date
(h)
Approved
Completion
Date
(i)
Forecast
Completion
Date
(j)
Schedule
Variance
(Days)
(k=i-j)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10035721
Transmission
Lines 7/8
Upgrades
CN $37,969 $37,969 $37,969 $4,843 $0 0% 01/31/25 01/31/25 01/31/25 0 Joint Infrastructure
Water Conveyance (Joint)
10014088
Moccasin
Penstock
Rehabilitation
PL $47,251 $47,251 $47,251 $6,027 $0 0% 02/28/28 02/28/28 02/28/28 0 Dams & Reservoirs (Joint)
10030758 OSH
Dam Access and
Drainage
CN $3,952 $3,952 $3,852 $3,141 $100 3% 02/28/23 02/28/23 04/28/23 (59) 10032903
O'Shaughnessy
Dam Outlet Works
Phase I
DS $47,894 $47,894
$47,981 $3,346 ($87) 0% 09/16/25 09/16/25 09/16/25 0
10037351
Moccasin Dam &
Reservoir Long-
Term
Improvements
PL $73,176 $73,176 $73,176 $816 $0 0% 06/30/28 06/30/28 06/30/28 0 * Does not include projects in closeout, completed, not initiated,on hold, deleted projects, and projects combined with other projects. ** Phase Status Legend
PL Planning DS Design
BA Bid & Award CN Construction MP Multiple-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY23-32.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY23-32, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 10 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) Project Name Active
Phase
(a)
CIP
Approved
Budget
(b)
Current
Approved
Budget
(c)
Current
Forecast
Cost
(d)
Expenditures
to Date
(e)
Cost
Variance
(f=c-d)
% Cost
Changes
(g=f/c)
CIP
Completion
Date
(h)
Approved
Completion
Date
(i)
Forecast
Completion
Date
(j)
Schedule
Variance
(Days)
(k=i-j)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10014115 Cherry
Dam Spillway -
Short Term
Improvements
PL
$11,861 $11,861 $24,856 $1,042 ($12,995) (110%) 06/30/27 06/30/27 11/01/27 (124) Mountain Tunnel
10014114
Mountain Tunnel
Improvement
Project
CN $238,219 $238,219 $238,219 $99,502 $0 0% 06/03/27 06/03/27 06/03/27 0 Roads & Bridges (Joint)
10035086 Bridge
Replacement
PL $29,371 $29,371 $29,371 $2,315 $0 0% 07/01/27 07/01/27 12/30/27 (182) Tunnels (Joint)
10014108 Canyon
Tunnel
Rehabilitation
PL
$8,429 $8,429 $14,993 $1,024 ($6,564) (78%) 09/01/26 09/01/26 12/30/26 (120) Utilities (Joint)
10014110
Moccasin
Wastewater
Treatment Plant
DS
$8,795 $8,795 $12,029 $966 ($3,234) (37%) 04/07/26 04/07/26 04/07/26 0 * Does not include projects in closeout, completed, not initiated,on hold, deleted projects, and projects combined with other projects. ** Phase Status Legend
PL Planning DS Design
BA Bid & Award CN Construction MP Multiple-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY23-32.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY23-32, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 11 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22)

7. PROJECT STATUS REPORT
10035575 - SJPL Valve and Safe Entry Improvement
Project Description: The SJPL Entry Assessment and Valve Improvement Project involves the three parallel transmission pipelines that stretch approximately 48-miles across the San Joaquin Valley from Oakdale Portal on the east to Tesla Portal near the City of Tracy on the west, with a partial fourth pipeline consisting of a 6.4-mile Eastern Segment and an 11-mile Western Segment. The four pipelines were built between 1932 and 2012, respectively, and range from 56- to 79.5-inches in diameter. Given the age and condition of the SJPLs, frequent maintenance and inspection are required. Work must be able to occur while the HHRWS is in service. The objective of this project is to upgrade valves and provide isolation points to allow safe entry into any and all sections of the SJPLs for inspection and maintenance while the remainder of the system stays in operation.

Program: Water Infrastructure Project Status: Multi-Phases Environmental Status: Active (Various) Project Cost:

Approved
Forecast
Actual
$ 142.66 M
$ 142.66 M
$ 7.97 M
Project Schedule:

Approved
Forecast
07/01/19
07/01/19
03/13/28
03/13/28
Project Percent Complete: 12.9%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 01/27/22 A 12/25/21 A 05/16/22 A 09/13/24
B 01/27/22 A 04/21/22 A 11/07/22 A 09/11/24
C 01/27/22 A 06/01/23 11/16/23 05/24/27
D 08/10/22 A 07/01/23 01/07/24 07/24/25
Progress and Status:

This project is divided into four (4) sub-projects, (A) Phase 1A – Pipeline 2 Tesla & Oakdale Entry Improvements –
HH-1005; (B) Phase 1B – Pipelines 3&4 Tesla & Oakdale
Entry Improvements HH-1006; (C) Phase 2 -Pelican, Roselle, Emery and P4J Entry Improvements; and (D) Phase 3 - Tesla Surge Tower. For Phase 1A, the 60-inch and 24-inch
diameter valves were delivered to the contractor’s shop in Sonora and are ready to be installed during the winter
shutdown starting next quarter. For Phase 1B, Notice to Proceed was granted on November 7, and the contractor
started working on the submittals of the long-lead items including the new butterfly valves. For Phase 2, 65% design was achieved in November. For Phase 3, the project obtained environmental approval during the previous quarter. The project team obtained a consensus from Water Enterprise to move forward with the surge tower design without a detention basin.

Issues and Challenges:

The schedule of Phase 3 (Tesla Surge Tower) has been
extended to address water quality concerns and the start of construction will be delayed for approximately one year to incorporate changes. However, this will not impact the overall completion of the entire project, as the project critical path is driven by Phase 2. At this time, no budget change is
expected.

New 60-inch Butterfly Valve at South Korea being packed for shipping [HH-1005]
12 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10036809 - Moccasin Powerhouse Bypass Upgrades
Project Description: Provide a reliable hydraulic bypass and energy dissipation system conveying water around the turbines to the Moccasin Reservoir Bypass Pipeline. Upgrade/replace high pressure energy dissipating valves, control systems, and associated structures that dissipate up to 325 million gallons per day (mgd) flow.

Program: Power Infrastructure Project Status: Planning Environmental Status: Not Initiated (TBD)
Project Cost:

Approved
Forecast
Actual
$ 15.01 M
$ 27.39 M
$ 0.76 M
Project Schedule:

Approved
Forecast
09/18/20
09/18/20
12/01/27
12/01/27
Project Percent Complete: 8.7%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 08/26/24 08/27/24 02/28/25 06/01/27
Progress and Status:

The preferred alternative for the project is to move the bypass system to a location outside of the powerhouse and north of the Moccasin penstocks. The consultant submitted a draft Planning Phase conceptual engineering report in December for review, comment, and approval. Design Phase is
expected to begin in March 2023.

Issues and Challenges:

The forecasted cost has increased from the initial project budget based on an updated cost estimate for the selected alternative in the alternatives analysis report (AAR) issued in March 2022. The former (approved) budget was based on a high level estimate at project initiation derived from similar pipeline project costs. A more detailed cost estimate will be performed at the end of the planning phase.

Moccasin Bypass Penstock Tie-in Point
13 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014086 - Moccasin Powerhouse and GSU Rehabilitation
Project Description: Moccasin Powerhouse Generators were completed in 1969 and generate a combined maximum output of 110 Megawatts. Both generator units have exceeded their life expectancy and need repair in order to continue operating reliably. The objective of this project is to replace stator cores and coils. The scope of work also includes entire field pole replacement. The project will also involve replacement of two generator step-up transformers (GSU's), and power plant systems upgrades including: replacing 480V switchgear, 13.8kV switchgear, motor control centers, main control boards, protective relays, cooling water piping, and improving oil containment systems.

Program: Power Infrastructure Project Status: Multi-Phases Environmental Status: Active (Various) Project Cost:

Approved
Forecast
Actual
$ 66.71 M
$ 66.71 M
$ 20.17 M
Project Schedule:

Approved
Forecast
01/04/16
01/04/16
12/03/27
12/03/27
Project Percent Complete: 34.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 09/28/20 A 11/20/20 A 06/07/21 A 05/23/23
B 09/28/20 A 10/30/20 A 08/15/22 A 06/17/24
C 04/25/23 04/01/24 10/02/24 06/07/27
Progress and Status:

This project is divided into 3 subprojects, (A) Moccasin Powerhouse Generator Step-Up (GSU’s) Transformers
HH-1003R; (B) Moccasin Powerhouse Generators Rewind –
DB-121R2; and (C) Moccasin Powerhouse Systems
Upgrade. For subproject A, contract HH-1003R, the second new Delta Star GSU2 transformer is scheduled to be moved to the new foundation rails in February 2023 for
interconnection. Contractor final testing and energization, and Substantial Completion of the construction are anticipated by March 2023. For subproject B, contract DB-121R2, major
generator components for Generator M2 Rewind are
anticipated to be fabricated, tested, and delivered by March 2023, with construction mobilization scheduled for May 2023.

For subproject C, Moccasin Powerhouse (MPH) Systems
Upgrade, the final conceptual engineering report (CER) is anticipated to be issued for signatures in March 2023, with Design Phase NTP scheduled for April 2023.

Issues and Challenges:

Mobilization for construction of the Generator M2 Rewind project is delayed due to procurement challenges that
delayed key equipment deliveries. The construction cost estimate in the draft CER for MPH Systems Upgrade has
increased over the previous estimate from Needs
Assessment due to additional scope and scope refinement as well as higher anticipated construction and procurement costs; these higher cost forecasts are being reviewed and will be reported on in future quarters when there is more certainty about scope.

MPH HH-1003R GSU2 Foundation
14 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014087 - Warnerville Substation Rehabilitation
Project Description: Provide the remaining installation work for Warnerville Substation Rehabilitation project equipment that was deleted under Design Build Contract #DB-127R. A new construction contract will be issued to install the new equipment that has been procured and is on site, including replacement of four oil circuit breakers, relay protection, and other ancillary equipment.

Program: Power Infrastructure Project Status: Construction Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 34.25 M
$ 34.25 M
$ 22.32 M
Project Schedule:

Approved
Forecast
09/01/15
09/01/15
11/25/26
11/25/26
Project Percent Complete: 79.2%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 03/31/16 A 01/24/17 A 10/05/17 A 03/31/24
C 07/07/23 09/06/24 02/03/25 02/04/26
Progress and Status:

This project is planned to have 2 or 3 construction contracts:
(A) A)Warnerville Substation Rehabilitation Phase
DB-127R; (B) Warnerville “breaker failure contingency
plan” (only if needed); and (C) Warnerville Substation Phase

2. (A) Phase 1: The project team, in coordination with the City Attorney’s office, is working to close out construction contract DB-127R. (B) Contract HH-1008, the “breaker failure
contingency plan,” provides for emergency temporary
replacement of any breakers that fail until they can be permanently replaced. The contracting strategy for this work that would only be required in the event of breaker failure is still being determined. (C) Warnerville Substation
Rehabilitation Phase 2 will use a design-bid-build contract.

Consultant submitted the draft conceptual engineering report in December 2022 for review, comment, and approval.

Design phase is anticipated to begin in February 2023.

Issues and Challenges:

None at this time.

TOP: Warnerville Substation South Yard
BOTTOM: Warnerville Substation Protection and Control Relay Panel 15 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10035721 - Transmission Lines 7/8 Upgrades
Project Description: This project develops the scope of work, design, and contract documents necessary to bid, award, and manage the reconductoring contract. Reconductoring will include replacement of the existing 115kV conductors on Lines 7/8 from Warnerville to Standiford substations, resulting in improved transmission tower stability, and resolved clearance detections. The project will be partially funded by independent power generators interconnecting on the California Independent System Operator (CAISO) and the Transmission Line Clearance Mitigation Project (10014089).

Program: Power Infrastructure Project Status: Construction Environmental Status: Completed (Permitting Only)
Project Cost:

Approved
Forecast
Actual
$ 37.97 M
$ 37.97 M
$ 4.84 M
Project Schedule:

Approved
Forecast
12/02/19
12/02/19
01/31/25
01/31/25
Project Percent Complete: 18.3%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 11/04/21 A 02/11/22 A 09/28/22 A 07/26/24 Progress and Status:

The contractor prepared submittals and placed orders for long lead-time materials including conductor, insulators, and tower steel. Potholing to locate the existing San Joaquin Pipelines (SJPL) 1, 2, and 3 was performed. In addition, the contractor has started with tower ground testing. The existing 115kV steel lattice transmission towers contain a ground system consisting of ground rods and copper cable buried beneath the earth to protect the system and personnel from overcurrent or lighting strikes. As part of the construction contract, the existing tower grounding system is being tested to verify there is no discontinuity or failure of the existing system. The grounding test consists of placing an electrical current connected directly to the existing copper ground wire and measuring the electrical resistance in the earth with a metal probe. If the earth resistance is measured at less than 25 ohms, than the grounding system is determined to provide adequate protection. To date, all testing has passed and no additional grounding is required. All work is progressing as scheduled.

Issues and Challenges:

None at this time.

Potholing Existing San Joaquin Pipelines 1, 2, and 3 at Tower 518S 16 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014088 - Moccasin Penstock Rehabilitation
Project Description: Moccasin Penstock was built in the early 1920's and conveys water from Moccasin Tunnel to Moccasin Powerhouse. A Condition Assessment Report, Phase I was submitted in 2011 by CH2MHill. The reports identified numerous deficiencies. The penstocks contain segments of hammer forged welded steel (HFWS) that has experienced failures in the past. The proposed scope of this project includes rehabilitation of anchors blocks, penstock coating, penstock saddle, air valves, large diameter butterfly valves, bifurcation sections and flow meters; and upgrade of electrical system, power transformers, standby generator in the West Portal Valve House, and bulkhead isolation valves in the surge tower.

The proposed project budget detailed below does not include the replacement of all HFWS pipes. This project will continue with the planning phase and further investigate if the HFWS in its' current condition meets the 100-year life span criteria.

The existing allocated funds will be sufficient through Planning and Design Phases. The additional funding request is for additional scope in construction.

Program: Joint Infrastructure Project Status: Planning Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 47.25 M
$ 47.25 M
$ 6.03 M
Project Schedule:

Approved
Forecast
02/01/16
02/01/16
02/28/28
02/28/28
Project Percent Complete: 13.1%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 10/07/24 10/08/24 04/16/25 08/24/27
Progress and Status:

Phased Array Ultrasonic Testing and Magnetic Particle
Inspection were initiated and completed in October;
intermittent cracks were observed on the investigated
sections of the hammer forged welded steel penstock pipe.

Five workshops with Hetch Hetchy Water & Power (HHWP),
Health & Safety, and the Engineering Management Bureau
Mechanical group were held from November 3 to December
19 to discuss these recent observations of cracks and to develop potential feasible pipe replacement alternatives. A further workshop is scheduled to be held in January to
present the replacement alternatives.

Issues and Challenges:

None at this time.

Phased Array Ultrasonic Testing inspection of a hammer forged welded steel pipe section of the penstocks
17 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10030758 - OSH Dam Access and Drainage
Project Description: The key objective of this project is to fall protection safety for Hetch Hetchy Water and Power (HHWP) operators inside the O'Shaughnessy Dam by installing fall protection systems that are in conformance with the updated Occupational Safety and Health Administration (OSHA) requirements, including ladders and landings with safety cage and/or fall restraint systems.

Program: Joint Infrastructure Project Status: Construction Environmental Status: Completed (Cat Ex)
Project Cost:

Approved
Forecast
Actual
$ 3.95 M
$ 3.85 M
$ 3.14 M
Project Schedule:

Approved
Forecast
03/01/17
03/01/17
02/28/23
04/28/23
Project Percent Complete: 94.1%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 07/16/20 A 03/18/21 A 09/27/21 A 01/10/23 Progress and Status:

Because the contractor has been unable to produce
appropriate as-built drawings, the project team negotiated a credit during the quarter for the City to complete the
AutoCAD as-built drawings. Final completion is anticipated early in January.

Issues and Challenges:

None at this time.

Spillway Access Ladder
18 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10032903 - O'Shaughnessy Dam Outlet Works Phase I
Project Description: O'Shaughnessy Dam (OSH) was completed in 1923 and raised in 1938. The original outlet works including gates and valves have been in services for more than 98 years. Inspections, condition assessments, and studies concluded that improvements and refurbishments of the outlet works system are needed to ensure safety and reliability.

The work will be implemented in two phases. This project is to cover the Phase 1 work. The O’Shaughnessy Dam Outlet Works Phase 1 Project addresses the identified deficiencies of the existing outlet works system at OSH. Phase 1 will include five projects: (1) supply and installation of nine new bulkheads; (2) improvements to the existing dam drainage system, repair cracks and joints, and lighting; (3) replacement of existing Instream Flow Release (IFR) valves; (4) NAR and AAR for twelve existing slide gates; and (5) NAR and AAR for the existing drum gates.

Program: Joint Infrastructure Project Status: Design Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 47.89 M
$ 47.98 M
$ 3.35 M
Project Schedule:

Approved
Forecast
02/01/18
02/01/18
09/16/25
09/16/25
Project Percent Complete: 9.1%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 12/02/22 A 01/09/23 09/03/24 03/14/25
B 12/05/23 05/01/23 12/05/23 07/25/24
C 12/02/22 A 02/02/23 08/01/23 03/25/25
Progress and Status:

Subproject A (Bulkhead): During this quarter, The California Environmental Quality Act (CEQA) Categorical Exemption for the proposed work was approved by the CCSF Planning
Department in December 2022. The progressive-design-build specification and bid package (DB-135) for the design and construction of the bulkhead was completed in late December and is anticipated to be ready for advertisement in January 2023. Subproject B (Access & Drainage): The scope of the needed remediation for the drainage, cracks, joints, and lighting in the dam is being finalized. Subproject C (Instream Flow Release Valve Replacement): CEQA Categorical
Exemption for the proposed work was approved by the CCSF Planning Department in December 2022. The 95%, design
was completed. Subprojects D (Slide Gate) and E (Drum
Gate): The engineering consultant continued work on the needs assessment.

Issues and Challenges:

The increase in the forecasted project cost is due to the increase in escalation rates.

Instream Flow Release Pipe and Valves in Diversion Tunnel 19 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22)

10037351 - Moccasin Dam & Reservoir Long-Term Improvements Project Description: The flow capacity of the existing spillway is inadequate to protect the Moccasin Dam against overtopping and erosion from severe flood events. The dam almost overtopped during the March 2018 storm event when flows were released from the auxiliary spillway and caused significant damage to the auxiliary spillway. The surrounding areas and the upstream diversion dam also sustained damage from the flood. This project is needed for dam safety. The objective of this project is to increase the spillway flow capacity to allow safe passage of flood flows without overtopping the dam and to protect the associated facilities within the Moccasin reservoir boundary against flood damages.

Program: Joint Infrastructure Project Status: Planning Environmental Status: Not Initiated (TBD)
Project Cost:

Approved
Forecast
Actual
$ 73.18 M
$ 73.18 M
$ 0.82 M
Project Schedule:

Approved
Forecast
05/03/21
05/03/21
06/30/28
06/30/28
Project Percent Complete: 2.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/30/26 01/02/26 09/03/26 12/30/27
Progress and Status:

The engineering consultant continued work on hydraulic
analysis and conceptual engineering for the new auxiliary spillway during this quarter.

Issues and Challenges:

None at this time.

Moccasin Dam Spillway Chute

20 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014115 - Cherry Dam Spillway - Short Term Improvements Project Description: A spillway release from Cherry Dam in 2010 caused a landslide, blockage of the spill channel, and extensive erosion in the close proximity of the dam’s right abutment. In addition, it caused flooding of the Cherry Power Tunnel Adit, and flooding of a campground further downstream. Engineering studies determined that significant long-term improvements to increase the spillway flow capacity are needed to maintain dam safety. The objective of this project is to re-establish containment for the breached spill channel section and to protect the downstream slope of the existing embankment dam from uncontrolled releases and erosion in the interim until the long-term improvements are implemented.

Program: Joint Infrastructure Project Status: Planning Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 11.86 M
$ 24.86 M
$ 1.04 M
Project Schedule:

Approved
Forecast
03/01/21
03/01/21
06/30/27
11/01/27
Project Percent Complete: 13.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 09/09/24 09/03/24 09/03/25 05/04/27
Progress and Status:

Field geotechnical investigation was completed in November 2022. An alternatives analysis report and selection of
alternative for the spillway short-term improvement are being finalized.

Issues and Challenges:

The increase in forecasted cost and schedule resulted from the addition of scope to provide flood protection near the lower spill channel to improve public safety.

Cherry Valley Dam Spillway Geotechnical Exploration
21 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014114 - Mountain Tunnel Improvement Project
Project Description: To be updated; Mountain Tunnel conveys the SFPUC water supply from Kirkwood Powerhouse to Priest Reservoir. Mountain Tunnel has been in service since 1925. Due to its age, deferred maintenance, and construction deficiencies in the early 1900s, sections of the tunnel lining have deteriorated, some extensively. This project provides design and construction of major tunnel repair and rehabilitation work, adit and tunnel entry improvements, access road improvements, and installation of a new flow control facility at Priest Reservoir to ensure that the tunnel can reliably provide drinking water to customers for the next 100 years. The flow control structure and isolation valves will also be used to isolate the tunnel from Priest Reservoir during tunnel shutdowns. This will allow the reservoir to remain full and not backwater for over 8 miles into the dewatered tunnel. The full reservoir provides more supply water for safely extending the tunnel shutdowns to longer durations of 100 days for construction inside the tunnel. These longer outages will reduce the need for more typical 60-day outages and shorten the overall duration of the construction schedule.

Program: Joint Infrastructure Project Status: Construction Environmental Status: Completed Project Cost:

Approved
Forecast
Actual
$ 238.22 M
$ 238.22 M
$ 99.50 M
Project Schedule:

Approved
Forecast
10/03/11
10/03/11
06/03/27
06/03/27
Project Percent Complete: 41.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 01/14/20 A 11/13/19 A 01/29/21 A 12/03/26 Progress and Status:

This quarter’s progress included completing the installation of the large diameter water conveyance piping within the
upstream and downstream bypass tunnels, completing the
Flow Control Facility (FCF) final lining concrete in the bottom twenty feet of the shaft, and completion of the off-site fabrication of the double disc knife gate valves for the downstream bypass pipes. The large bulkhead door at the Priest Adit was installed and successfully pressure tested.

Excavation and initial lining of the Priest Adit was progressed to about 20 feet away from the existing Mountain Tunnel to prepare for Outage No. 2. Other miscellaneous work was
completed at the FCF and the Priest Adit in preparation for tie-in to the existing Mountain Tunnel during Outage No.2, including setting up the temporary water filtration plant at Moccasin and the water treatment plant for construction water at Priest. Road improvement work along Rickson Road at Priest Reservoir is approximately 95% complete. Road improvement work continued at Adit 5/6 and South Fork
Roads. Discussions between the contractor and the City are taking place regarding possible alternative methods that may be feasible to construct the South Fork Siphon Extension.

Issues and Challenges:

Winter storms at the end of the quarter resulted in a delay to the start date for Outage No. 2. Any cost or schedule
impacts will be determined at a later date.

Bottom of FCF Shaft Preparing for Final Lining Concrete Pour 22 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10035086 - Bridge Replacement
Project Description: HHWP is responsible for maintaining 14 bridges located in the Cherry, Eleanor and Hetch Hetchy region. Condition assessment has identified the need for rehabilitation and/or replacement (age and to meet current seismic design criteria). Two of the fourteen bridges require substantial modification or replacement and have been combined into this project. This project includes rehabilitation and/or replacement of O'Shaughnessy Adit Access Bridge; and Lake Eleanor Dam Bridge. The Lake Eleanor Dam Bridge is a structural component of the Lake Eleanor Dam which is integral to the structural/seismic integrity of the arch dam and should be addressed immediately. The O'Shaughnessy Adit Access Bridge was built in 1960. It is approximately 84 feet long and is a four-span simply supported bridge with a timber deck and concrete piers. It is located right at the downstream of O'Shaughnessy Dam and provides on land two-way access to Canyon Tunnel.

Program: Joint Infrastructure Project Status: Planning Environmental Status: Not Initiated (Various)
Project Cost:

Approved
Forecast
Actual
$ 29.37 M
$ 29.37 M
$ 2.32 M
Project Schedule:

Approved
Forecast
02/27/20
02/27/20
07/01/27
12/30/27
Project Percent Complete: 8.2%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 09/04/24 07/17/24 04/30/25 09/29/26
B 09/30/24 10/01/24 07/01/25 06/30/27
Progress and Status:

This project is divided into 2 subprojects, (A) Lake Eleanor Dam Bridge; and (B) O’Shaughnessy Adit Access Bridge. For the Lake Eleanor Dam Bridge, work continues on finishing the alternatives analysis report. For the O’Shaughnessy Adit Access Bridge, the project team finalized the alternative analysis report with the Technical Steering Committee’s approval. Work continues on drafting a conceptual
engineering report, updating cost estimates, and revisiting the hydraulic analysis report. San Francisco Public Work’s design proposal, including proposed consultant resources to
complete a condition assessment for the timber bridge, was developed and reviewed. The selected alternative is being assessed for potential environmental requirements, such as wetland delineation, owl survey, ambient noise measurement, archeological survey, historic resources evaluation and golden eagle nest survey.

Issues and Challenges:

The bridge replacement project schedule is forecasted to be delayed by six (6) months due to the decision to extend the Environmental phase of the O’Shaughnessy Adit Access
Bridge sub-project to assume requirements from the
California Environmental Quality Act (CEQA) Mitigated
Negative Declaration and also to increase Bid & Award phase based on recent contract bidding history.

Aerial View of the Lake Eleanor Dam Bridge
23 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014108 - Canyon Tunnel Rehabilitation
Project Description: Canyon Tunnel was built over 55 years ago. A condition assessment was performed on the tunnel in 2009 and the tunnel is in generally good condition with the exception of the Hetchy Adit, a tunnel access point. Temporary repairs have been made to the "plug" at this adit twice (1989, 2009), but permanent repairs are needed to reduce leakage and increase reliability of the system. Project scope includes installation of a new reinforced concrete plug downstream of the existing plug. This project is being delayed because of boundary correction issues.

Program: Joint Infrastructure Project Status: Planning Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 8.43 M
$ 14.99 M
$ 1.02 M
Project Schedule:

Approved
Forecast
02/03/14
02/03/14
09/01/26
12/30/26
Project Percent Complete: 11.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 12/29/23 08/01/24 04/01/25 06/30/26
Progress and Status:

The updated conceptual engineering report was further
developed to incorporate the project team’s comments. The project team held a 65% design workshop on November 2
and worked to update design drawings, design memo, and
technical specifications.

Issues and Challenges:

The project forecast completion date has been extended
and the cost has increased for several reasons. First, this project has been on hold since 2016 in order to implement a right of way boundary correction; now that the correction has been made, the schedule forecast has been updated.

Second, a recent construction cost estimate from 2022
shows increase of direct costs for construction due to
recommended additional rock excavation, concrete batch
plant set up, and mechanical equipment upgrades. In
addition, costs were updated for the current forecasted construction schedule.

Site visit to evaluate the existing plug at Hetch Hetchy Adit within the Canyon Tunnel
24 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) 10014110 - Moccasin Wastewater Treatment Plant
Project Description: The Moccasin Wastewater Treatment Plant (WWTP) provides primary treatment of wastewater from Moccasin Compound prior to discharging the treated water to a nearby spray field. The WWTP was constructed in the 1970s and has been in continuous operation since its installation. The WWTP has reached the end of its reliable service life, and is becoming increasingly maintenance intensive. The scope of work is to replace the existing plant with a package two-train sequencing batch reactor (SBR) plant with grit removal and screening facilities, upgraded electrical and flow monitoring systems, flow equalization, SCADA instrumentation and automation features, and related site improvements.

Program: Joint Infrastructure Project Status: Design Environmental Status: Active (TBD) Project Cost:

Approved
Forecast
Actual
$ 8.79 M
$ 12.03 M
$ 0.97 M
Project Schedule:

Approved
Forecast
01/03/22
01/03/22
04/07/26
04/07/26
Project Percent Complete: 16.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 11/14/23 05/10/23 11/28/23 09/09/25
Progress and Status:

The design criteria report was updated and finalized. The project team worked on developing the 95% design drawings, specifications, cost estimate, and constructability review. A workshop to present 95% design is scheduled to be held next quarter in February.

Issues and Challenges:

The increase in the forecasted project cost is due to a recent construction estimate developed in 2022 that demonstrates increases in base construction cost, additional process equipment costs, additional site development costs, and increased escalation costs.

Site visit with HHWP, Consultant, and EMB
25 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22)

8. ON-GOING CONSTRUCTION*
Construction
Schedule Budget Variance
(Approved - Forecast) Percent
Contract
NTP Date
Approved
Construction
Final
Completion**
Current
Forecast
Construction
Final
Completion
Approved
Contract
Cost
Current
Forecast
Cost**
Schedule
(Cal Days) Cost
Complete
Water Infrastructure
10035575 - SJPL Valve & Safe Entry
Improvement - (Contract A) - HH-1005
05/16/22 09/13/24 09/13/24 $11,879,454 $11,879,454 0 $0 11.7% 10035575 - SJPL Valve & Safe Entry
Improvement - (Contract B) - HH-1006
11/07/22 09/11/24 09/11/24 $12,981,989 $12,981,989 0 $0 0.0% Power Infrastructure
10014086 - Moccasin Powerhouse
Transformers Installation (Contract A)
- HH-1003R
06/07/21 05/23/23 05/23/23 $3,940,319 $3,940,319 0 $0 78.7% 10014086 - Moccasin
Powerhouse Generator Rehab
(Contract B) - DB-121R2
06/21/21 06/17/24 06/17/24 $28,898,986 $28,898,986 0 $0 24.9% 10014087 - Warnerville Substation -
DB-127R **
10/05/17 03/31/24 03/31/24 $14,591,450 $14,591,450 0 $0

90.4%
10035721 - Transmission Lines 7/8
Upgrade - HH-1007
09/28/22 07/26/24 07/26/24 $26,378,155 $26,378,155 0 $0

2.32%
Joint Infrastructure
10030758 - OSH Dam Access &
Drainage Improvement - HH-1002R
09/27/21 08/21/22 01/10/23 $1,648,556 $1,648,556 (142) $0 99.4% 10014114 - Mountain Tunnel
Improvement - HH-1000R
01/29/21 12/03/26 12/03/26
$152,870,508 $155,567,864 0 ($2,697,356) 37.4%
Note: * This table reflects Active Construction Contracts with an original contract amount greater than $1M. ** The Forecast Cost includes all approved, pending, and potential change orders; and Final Completion includes all approved, pending, and potential change orders, and trends. 26 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22) Program Total for On-
Going Construction $253,189,417 $255,886,773 ($2,697,356) (1.1%) Note: * This table reflects Active Construction Contracts with an original contract amount greater than $1M. ** The Forecast Cost includes all approved, pending, and potential change orders; and Final Completion includes all approved, pending, and potential change orders, and trends.

Approved Current Variance
Contract Cost Forecast Cost Cost Percent

8. ON-GOING CONSTRUCTION* (CONT'D)
27 HCIP Quarterly Report Q2-FY2022-2023 (10/01/22 - 12/31/22)

9. PROJECTS IN CLOSEOUT
Project Title
Current
Approved
Construction
Phase
Completion
Actual
Construction
Phase
Completion
Current
Approved
Construction
Phase Budget
Construction
Phase
Expenditures
To Date
Water Infrastructure
Water Conveyance (Water)
10035574 - SJPL Tesla Valves Replacement 07/29/22 10/28/22 $1,948,649 $916,008 Power Infrastructure
Powerhouse
10014075 - Holm and Other Powerhouse Projects 05/14/21 05/14/21 $12,959,275 $12,636,797 TOTAL $14,907,924 $13,552,805
28 10. COMPLETED PROJECTS
There are no completed projects
HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) 29 This page is intentionally left blank
HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) 30 Appendices

APPENDICES

A PROJEC T

DESCRIPTIONS

B APPROVED PROJECT L EVEL SCHEDULES / BUDGET S

C LIST OF ACRONYMS
HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) This page is intentionally left blank
HClP Quarterly Report Q2-FY2022-2023 (10/01/22 – 12/31/22) APPENDICES Q2-FY2022-2023 (10/01/22 – 12/31/22)
APPENDIX A. PROJECT DESCRIPTION

WATER INFRASTRUCTURE
Water Conveyance (Water)
10035574 SJPL Tesla Valves Replacement
This original project was to replace four large diameter butterfly valves, TUV 101 to 401, at Tesla Valve Vault so that the San Joaquin Pipelines (SJPL) could be safely isolated individually without the entire system shutdown. This would also improve safety to enter the pipelines for maintenance and inspection purposes. After the planning phase of the SJPL Valve and Safe Entry Improvement project (Project 10035575), it was recommended that the scope of the SJPL Tesla Valve Replacement be reduced to focus on completing the replacement of TUV101 only. The remainder of the work will be combined with the work of SJPL Valve and Safe Entry Improvement. The proposed baseline has been reduced by $3.64m, from $7.38m to $3.74m, to reflect this reduction in scope.
10035575 SJPL Valve and Safe Entry Improvement
The SJPL Entry Assessment and Valve Improvement Project involves the three parallel transmission pipelines that stretch approximately 48-miles across the San Joaquin Valley from Oakdale Portal on the east to Tesla Portal near the City of Tracy on the west, with a partial fourth pipeline consisting of a 6.4-mile Eastern Segment and an 11-mile Western Segment. The four pipelines were built between 1932 and 2012, respectively, and range from 56- to 79.5-inches in diameter. As part of the WSIP, valve vaults were constructed along the SJPL System at various locations to increase operational flexibility and the overall reliability of the SJPL System. The valves are not sufficiently rated for hydrostatic or transient/surge pressures resulting in an unsafe condition for personnel to enter the pipelines unless there is a complete shutdown of the Hetch Hetchy Regional Water System (HHRWS). Given the age and condition of the SJPLs, work must be able to occur while the HHRWS is in service. The objective of this project is to allow safe entry into any and all sections of the SJPLs for inspection and maintenance while the remainder of the system stays in operation. This project will allow for isolation of the pipelines to prevent a water engulfment hazard during a Permit-Required Confined Space (PRCS) entry of a pipeline. In addition, replacement of the butterfly valves TUV 201 through 401, originally planned under SJPL Tesla Valves Replacement will be completed under this project.

Water Infrastructure Project Development
10014072 WATER ONLY/PROJ DEV
The Project Development (PD) Account captures Program level expenditures. There are four types of charges that will be allocated to the PD Account: 1) Task orders for overall program management and project prioritization tasks, where the costs should be distributed over all CIP Projects. 2) Infrastructure and Hetchy staff performing program level tasks including: capital plan development, budget management (including fund management, and cost reallocations); Unifier and Quarterly Report generation tasks, where the costs should be distributed over all CIP Projects. 3) Portal support for the existing SharePoint Portal (includes document management and project dashboard reporting) 4) Work Outreach program.

A1
APPENDICES Q2-FY2022-2023 (10/01/22 – 12/31/22)
APPENDIX A. PROJECT DESCRIPTION CONT'D

POWER INFRASTRUCTURE
Powerhouse
10036809 Moccasin Powerhouse Bypass Upgrades
Provide a reliable hydraulic bypass and energy dissipation system conveying water around the turbines to the Moccasin Reservoir Bypass Pipeline. Upgrade/replace high pressure energy dissipating valves, control systems, and associated structures to absorb 1,147 feet of pressure head and 430 cubic feet per second flow without damage.
10014086 Moccasin Powerhouse and GSU Rehabilitation
Moccasin Powerhouse Generators were completed in 1969 and generate a combined maximum output of 110 Megawatts. Both generator units have exceeded their life expectancy and need repair in order to continue operating reliably. Since their original installation, the generators have not had any major maintenance work done (no rewinds or overhauls). The objective of this project is to replace stator cores and coils. The scope of work also includes entire field pole replacement, replacement of the rotor pole/rim tail connection system with a new T-tail connection system, and supply of a new rotor rim for each generator following inspection and testing. The project will also involve replacement of two generator step- up transformers (GSU's), and power plant systems upgrades including: replacing 480V switchgear, 13.8kV switchgear, motor control centers, main control boards, protective relays, cooling water piping, and improving oil containment systems. The work is divided into three phases: Phase 1 - Generator Rehabilitation Phase 2 - GSU Replacement Phase 3 - Power Plant Systems Upgrades. 10014075 Holm and Other Powerhouse Projects
PLEASE NOTE: This project has been replaced by 10036104 and will not be requesting any additional funding in the Capital Plan. The powerhouses are made up of the following systems: 1) Turbine and governors; 2) Generator and excitation; 3) Electrical - Power train, station service and protection systems; 4) Step-up transformers; and 5) Mechanical systems. Rehabilitation costs for categories 1, 2, and 4 above are estimated at about 85% of total powerhouse rehabilitation costs (excluding building costs) and will be performed by Infrastructure. This project will fund: 1) Project under categories 3 and 5; 2) Unplanned failures for all categories; and 3) Managing replacement of assets with shorter life expectancies. Examples of electrical and mechanical systems covered in this project include inverters, breakers in 480V switchgear, 480V Motor Control Centers, electrical protective relays, cooling water piping/tubing, turbine shut- off valve control water piping/tubing, station air compressor, SCADA/control system, and vibration monitoring.
10036810 Kirkwood Powerhouse Bypass Upgrades
Provide a reliable hydraulic bypass and energy dissipation system conveying water around the turbines to the Kirkwood Powerhouse Bypass Chamber and Mountain Tunnel. Upgrade/replace high pressure energy dissipating valves, control systems, and associated structures to absorb 1,245 feet of pressure head and 430 cubic feet per second flow without damage.

Switchyard & Substations (Power)
10014087 Warnerville Substation Rehabilitation
The additional funding request is to cover the remaining work for Warnerville Substation Rehabilitation project. Under Design Build Contract #DB-127R, installation of some 230kV equipment was deleted from A2
APPENDICES Q2-FY2022-2023 (10/01/22 – 12/31/22)
the contract but procured including circuit breakers, switches, insulators, and current voltage transformers. This remaining work includes the replacement of, four oil circuit breakers, bushings, surge arrestors, disconnect switches, current voltage transformer, insulators, relay protection, and other ancillary equipment. The Planning of the remaining work is expected to start in August 2020. Project Estimate is approximately $6.2 Million.

Transmission Lines
10035721 Transmission Lines 7/8 Upgrades
BACKGROUND: The San Francisco Public Utilities Commission (SFPUC) electric transmission lines 7/8 conveys power from Warnerville Substation to Modesto Irrigation District's Standiford Substation. The SFPUC must accommodate additional power flowing across its transmission system due to grid interconnection requests from independent power generators interconnecting on the California Independent System Operator (CAISO). This is a requirement for SFPUC and HHWP obligations as a neighboring provider of electric transmission service. Studies performed by the SFPUC indicate the principal impact to its system is an overload of 115kV Lines 7&8 between HHWP Warnerville Substation and MID Standiford Substation under contingency conditions if interconnections are made without modification to the system's capacity. Without modifications, the SFPUC and HHWP transmission system could face reliability issues. Reconductoring also resolves multiple locations where the clearance between the existing conductors and the ground or structures does not meet current safe clearance regulations.

DESCRIPTION: This project develops the scope of work, design, and contract documents necessary to bid, award, and manage the reconductoring contract. Reconductoring will include replacement of the existing 115kV conductors on Lines 7/8 from Warnerville to Standiford substations, resulting in improved transmission tower stability, and resolved clearance detections. The project will be partially funded by independent power generators interconnecting on the California Independent System Operator (CAISO) and the Transmission Line Clearance Mitigation Project (10014089).

Power Infrastructure Project Development
10014092 POWER ONLY/PROJ DEVELP
The Project Development (PD) Account captures Program level expenditures. There are four types of charges that will be allocated to the PD Account: 1) Task orders for overall program management and project prioritization tasks, where the costs should be distributed over all CIP Projects. 2) Infrastructure and Hetchy staff performing program level tasks including: capital plan development, budget management (including fund management, and cost reallocations); and Quarterly Report generation tasks, where the costs should be distributed over all CIP Projects. 3) Portal support for the existing SharePoint Portal (includes document management and project dashboard reporting) 4) Work Outreach program.

A3
APPENDICES Q2-FY2022-2023 (10/01/22 - 12/31/22)
APPENDIX A. PROJECT DESCRIPTION CONT'D

JOINT INFRASTRUCTURE
Water Conveyance (Joint)
10014088 Moccasin Penstock Rehabilitation
Moccasin Penstock was built in the early 1920's and conveys water from Moccasin Tunnel to Moccasin Powerhouse. A Condition Assessment Report, Phase I was submitted in 2011 by CH2MHill. The reports identified numerous deficiencies. The penstocks contain segments of hammer forged welded steel (HFWS) that has experienced failures in the past. This type of HFWS pipe has a history of brittle fracture failure at both Pacific Gas & Electric and Southern California Edison Penstocks. In addition, issues have been identified regarding the anchor/saddle system with respect to Alkali Reactive Silica which degrades the concrete. An Alternative Analysis Report and a Design Criteria report were submitted by MWH/Stantec in 2016. Due to lack of funds in the previous budget cycle, the project scope was reduced to limit the repair to one penstock. The design of the rehabilitation work for one penstock was completed and went out for bid.

Because of the 2018 March Storm event and concerns about the isolation point at West Portal, the construction contract was terminated before the contractor started work. In view of long term asset reliability, HHWP decides to revisit the scope to include the rehabilitation work of both penstocks and other upgrade. The proposed new scope of this project includes rehabilitation of anchors blocks, penstock coating, penstock saddle, air valves, large diameter butterfly valves, bifurcation sections and flow meters; and upgrade of electrical system, power transformers, standby generator in the West Portal Valve House, and bulkhead isolation valves in the surge tower. The proposed project budget detailed below does not include the replacement of all HFWS pipes. This project will continue with the planning phase in FY2018-19 and further investigate if the HFWS in its' current condition meets the 100-year life span criteria. The existing allocated funds will be sufficient through Planning and Design Phases. The additional funding request is for additional scope in construction.

Dams & Reservoirs (Joint)
10030758 OSH Dam Access and Drainage
The key objective of this project is to fall protection safety for Hetch Hetchy Water and Power (HHWP) operators inside the O'Shaughnessy Dam by installing fall protection systems that are in conformance with the updated Occupational Safety and Health Administration (OSHA) requirements, including ladders and landings with safety cage and/or fall restraint systems. 10032903 O'Shaughnessy Dam Outlet Works Phase I
O'Shaughnessy Dam (OSH) was completed in 1923 and raised in 1938. The original outlet works including gates and valves have been in services for more than 98 years. Inspections, condition assessments, and studies concluded that improvements and refurbishments of the outlet works system are needed to ensure safety and reliability. The work will be implemented in two phases. This project is to cover the Phase 1 work. The O’Shaughnessy Dam Outlet Works Phase 1 Project addresses the identified deficiencies of the existing outlet works system at OSH. Phase 1 will include five projects: (1) supply and installation of nine new bulkheads; (2) improvements to the existing dam drainage system, repair cracks and joints, and lighting; (3) replacement of existing Instream Flow Release (IFR) valves; (4) NAR and AAR for twelve existing slide gates; and (5) NAR and AAR for the existing drum gates. The existing control gates and valves are essential features for dam safety and reservoir operation. The project is needed to maintain safe and reliable operation of these aging assets. Failure or malfunction of these gates and valves will affect dam safety and result in reduction of storage and reduction of water deliveries to SFPUC customers.

A4
APPENDICES Q2-FY2022-2023 (10/01/22 - 12/31/22)
10037351 Moccasin Dam & Reservoir Long-Term Improvements The flow capacity of the existing spillway is inadequate to protect the Moccasin Dam against overtopping and erosion from severe flood events. The dam almost overtopped during the March 2018 storm event when flows were released from the auxiliary spillway and caused significant damage to the auxiliary spillway. The surrounding areas and the upstream diversion dam also sustained damage from the flood.

This project is needed for dam safety. The objective of this project is to increase the spillway flow capacity to allow safe passage of flood flows without overtopping the dam and to protect the associated facilities within the Moccasin reservoir boundary against flood damages. 10014115 Cherry Dam Spillway - Short Term Improvements
A spillway release from Cherry Dam in 2010 caused a landslide, blockage of the spill channel, and extensive erosion in the close proximity of the dam’s right abutment. In addition, it caused flooding of the Cherry Power Tunnel Adit, and flooding of a campground further downstream. Engineering studies determined that significant long-term improvements to increase the spillway flow capacity are needed to maintain dam safety. The objective of this project is to re-establish containment for the breached spill channel section and to protect the downstream slope of the existing embankment dam from uncontrolled releases and erosion in the interim until the long-term improvements are implemented.

Mountain Tunnel
10014114 Mountain Tunnel Improvement Project
Constructed between 1917-25, Mountain Tunnel (MT) is a critical, non-redundant link in the Hetch Hetchy water system, conveying SFPUC water supply from Kirkwood Powerhouse to Priest Reservoir. Due to the tunnel's 90 years of operation, deferred maintenance, as well as the construction deficiencies in the early 1900s, sections of the tunnel have deteriorated, some more extensively than others. MT improvements to enhance SFPUC's ability to provide reliable, high-quality water to its customers, will be carried out through three projects: 1. MT Adits & Access Improvement 2. MT Inspection and Repair 3. MT Tunnel Improvements. Mountain Tunnel Adits & Access Improvement Project will enlarge Adits 5/6 and 8/9 to accommodate quick entry of construction crews and equipment into the tunnel; and will improve access roads to the said adits. Mountain Tunnel Inspection & Repairs Project provides for a tunnel inspection in 2017 to update the Condition Assessment conducted in 2008, as well as short-term repairs in 2017 and 2018 to reduce the risk of failures in the concrete lining prior to the long-term project being implemented.

Mountain Tunnel Improvements (Rehabilitation) Project was selected for the design and construction of the preferred engineering alternative that will keep this vital component of the Hetch Hetchy Water and Power System in reliable service for years to come. Budget and schedule is based on the Mountain Tunnel Improvement which has an anticipated construction phase between from 2021 to 2027 (MRN 238-241, 244, 245) **This is the Water portion of the Mountain Tunnel project.

Roads & Bridges (Joint)
10035086 Bridge Replacement
HHWP is responsible for maintaining 14 bridges located in the Cherry, Eleanor and Hetch Hetchy region.

Condition assessment has identified the need for rehabilitation and/or replacement (age and to meet current seismic design criteria). Two of the fourteen bridges require substantial modification or replacement and have been combined into this project. This project includes rehabilitation and/or replacement of O'Shaughnessy Adit Access Bridge; and Lake Eleanor Dam Bridge. The Lake Eleanor Dam Bridge is a structural component of the Lake Eleanor Dam which is integral to the structural/seismic integrity of the arch dam and should be addressed immediately. The O'Shaughnessy Adit Access Bridge A5
APPENDICES Q2-FY2022-2023 (10/01/22 - 12/31/22)
was built in 1960. It is approximately 84 feet long and is a four-span simply supported bridge with a timber deck and concrete piers. It is located right at the downstream of O'Shaughnessy Dam and provides on land two-way access to Canyon Tunnel.

Tunnels (Joint)
10014108 Canyon Tunnel Rehabilitation
Canyon Tunnel was built over 55 years ago. A condition assessment was performed on the tunnel in 2009 and the tunnel is in generally good condition with the exception of the Hetchy Adit, a tunnel access point.

Temporary repairs have been made to the "plug" at this adit twice (1989, 2009), but permanent repairs are needed to reduce leakage and increase reliability of the system. Project scope includes installation of a new reinforced concrete plug downstream of the existing plug. This project is being delayed because of boundary correction issues.

Utilities (Joint)
10014110 Moccasin Wastewater Treatment Plant
The Moccasin Wastewater Treatment Plant (WWTP) provides primary treatment of wastewater from Moccasin Compound prior to discharging the treated water to a nearby spray field. The WWTP was constructed in the 1970s and has been in continuous operation since its installation. The WWTP has reached the end of its reliable service life, and is becoming increasingly maintenance intensive. The scope of work is to replace the existing plant with a package two-train sequencing batch reactor (SBR) plant with grit removal and screening facilities, upgraded electrical and flow monitoring systems, flow equalization, SCADA instrumentation and automation features, and related site improvements.

Joint Infrastructure Project Development
10014116 JOINT - PROJECT DEVELOPMENT
The Project Development (PD) Account captures Program level expenditures. There are four types of charges that will be allocated to the PD Account: 1) Task orders for overall program management and project prioritization tasks, where the costs should be distributed over all CIP Projects. 2) Infrastructure and Hetchy staff performing program level tasks including: capital plan development, budget management (including fund management, and cost reallocations); Unifier and Quarterly Report generation tasks, where the costs should be distributed over all CIP Projects. 3) Portal support for the existing SharePoint Portal (includes document management and project dashboard reporting) 4) Work Outreach program.

A6
Project Name Approved Budget Start Finish
Hetchy Capital Improvement Program $862,306,192.00 03-Oct-11 30-Oct-35 Hetch Hetchy Water Enterpise $862,306,192.00 03-Oct-11 30-Oct-35 Water Infrastructure $155,874,178.00 26-Mar-12 30-Jun-33 Water Conveyance (Water) $146,401,975.01 01-May-19 13-Mar-28 10035574 SJPL Tesla Valves Replacement $3,740,000.00 01-May-19 30-Dec-22 10035575 SJPL Valve and Safe Entry Improvement $142,661,975.00 01-Jul-19 13-Mar-28 Water Infrastructure Project Development $9,472,203.00 26-Mar-12 30-Jun-33 10014072 WATER ONLY/PROJ DEV $9,472,203.00 26-Mar-12 30-Jun-33 Power Infrastructure $205,300,184.00 29-May-12 30-Oct-35 Powerhouse $118,581,215.00 03-Sep-13 30-Oct-35
10014075 Holm and Other Powerhouse Projects $20,703,580.00 03-Sep-13 22-Aug-22 10014086 Moccasin Powerhouse and GSU Rehabilitation $66,713,635.00 04-Jan-16 03-Dec-27 10036809 Moccasin Powerhouse Bypass Upgrades $15,007,000.00 18-Sep-20 01-Dec-27 10036810 Kirkwood Powerhouse Bypass Upgrades $16,157,000.00 27-Feb-20 30-Oct-35 Switchyard & Substations (Power) $34,248,428.00 01-Sep-15 25-Nov-26 10014087 Warnerville Substation Rehabilitation $34,248,428.00 01-Sep-15 25-Nov-26 Transmission Lines $37,969,000.00 02-Dec-19 31-Jan-25
10035721 Transmission Lines 7/8 Upgrades $37,969,000.00 02-Dec-19 31-Jan-25 Power Infrastructure Project Development $14,501,541.00 29-May-12 30-Jun-33 10014092 POWER ONLY/PROJ DEVELP $14,501,541.00 29-May-12 30-Jun-33 Joint Infrastructure $501,131,830.00 03-Oct-11 30-Jun-33 Water Conveyance (Joint) $47,251,363.00 01-Feb-16 28-Feb-28 10014088 Moccasin Penstock $47,251,363.00 01-Feb-16 28-Feb-28 Dams & Reservoirs (Joint) $136,883,506.01 01-Mar-17 30-Jun-28 10032903 O'Shaughnessy Dam Outlet Works Phase I $47,894,099.00 01-Feb-18 16-Sep-25 10030758 OSH Dam Access and Drainage Improvements $3,952,211.00 01-Mar-17 28-Feb-23 10037351 Moccasin Dam Long-Term Improvements $73,176,231.00 03-May-21 30-Jun-28 10014115 Cherry Dam Spillway - Short T erm Improvemen $11,860,965.00 01-Mar-21 30-Jun-27 Mountain Tunnel $238,218,951.01 03-Oct-11 03-Jun-27
10014114 Mountain Tunnel Improvement Project $238,218,951.01 03-Oct-11 03-Jun-27 Road and Bridges (Joint) $29,370,881.00 27-Feb-20 01-Jul-27 10035086 Bridge Replacement (4 - Bridges) $29,370,881.00 27-Feb-20 01-Jul-27 Tunnels (Joint) $8,428,813.00 03-Feb-14 01-Sep-26
10014108 Canyon Tunnel Rehabilitation $8,428,813.00 03-Feb-14 01-Sep-26 Utilities (Joint) $8,794,549.00 03-Jan-22 07-Apr-26
10014110 Moccasin Wastewater Treatment Plant $8,794,549.00 03-Jan-22 07-Apr-26 Joint Infrastructure Project Development $32,183,767.00 25-Jun-12 30-Jun-33 10014116 JOINT - PROJECT DEVELOPMENT $32,183,767.00 25-Jun-12 30-Jun-33 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FQ3 FQ4 FQ1 FQ2 FY2022 FY2023 FY 2024 FY2025 FY2026 FY2027 FY2028 FY2029 FY 2030 FY2031 FY 2032 APPENDIX B. Hetch Hetchy Capital Improvement Program Approved Project Level Schedules/Budgets Project Management
Planning
Environmental
Design
Right-of-W ay
Bid & Award
Construction Mgmt
Construction
Closeout
Program Mgmt
A7
APPENDIX C. LIST OF ACRONYMS
AAR Alternative Analysis Report
BLM Bureau of Land Management
CAISO California Independent System
Operator
CATEX
CCTV
CEQA
CER
CIP
CRT
DB
DCR
DSOD
EMB
FCF
FY
GSU
GWH
HCIP
HH
HHWP
HPH
IFR
JOC
KPH
MGD
MID
MPH
NAR
NERC
NTP
OSH
PD
PG&E
PLC
PSI
R&R
SBR
Categorical Exemption
Closed-Circuit Television
California Environmental Quality Act
Conceptual Engineering Report
Capital Improvement Program
Coast Range Tunnel
Design-Build
Design Criteria Report
Division of Safety of Dams
Engineering Management Bureau
Flow Control Facility
Fiscal Year
Generator Step-Up
Gigawatt Hours
Hetch Hetchy Capital Improvement Pr
ogram
Hetch Hetchy
Hetch Hetchy Water and Power
Hol
m Powerhouse
Instream Flow Release
Job Order Contract
Kirkwood Powerhouse
Million Gallons per Day
Modesto Irrigation District
Moccasin Powerhouse
Needs Assessment Report
North American Electric Reliability Corporation
Notice to Proceed
O'Shaughnessy Dam
Project Development
Pacific Gas and Electric Company
Programmabl
e Logic Controllers
Per Square Inch
Renewal and Replacement
Sequence Batch Reactor
SCADA Supervisory Control and Data Acquisition
SFPUC San Francisco Public Utilities Commission
SJPL San Joaquin Pipeline
TSC Technical Steering Committee
TTF Tesla Treatment Facility
TUV Tesla Ultra Violet
TVH Tesla Valve House
WSIP Water System Improvement Program
WWTP Wastewater Treatment Plant
HCIP Quarterly Report Q2-FY2022-2023 (10/01/22– 10/31/22) A8