Hetch Hetchy Capital Improvement Program Quarterly Report — CleanPowerSF Sfpuc Commission, January 10, 2023

1 Hetch Hetchy Capital Improvement Program
Q1 | FY 2022
–
2023
January 10, 2023
Katie Miller, Director
Water Capital Programs
Infrastructure Division
Planning (7),
$233M
Design (1),
$9M
Bid & Award
(0), $0
Construction (5),
$318M
Closeout (1),
$21M
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 September 2022)
26%
% Complete
Expenditures

HCIP Program Cost Summary
(from Table 3)
3 Program Name
Expenditures
to Date
($Million)
Expenditures
During Q1
($Million)
Current
Approved
Budget
($Million)
Current
Forecasted
Cost
($Million)
Cost
Variance
($Million)
Water
Infrastructure $13 $1.5 $156 $156 -
Power
Infrastructure $69 $4.4 $205 $205 -
Joint
Infrastructure $114 $15.2 $501 $501 -
Overall HCIP $196 $21.2 $862 $862 -
Mountain Tunnel Improvements
4 Progress and Status:
• Priest Adit Tunnel: Excavation and
lining completed; Priest Adit bulkhead
door installed.
• Flow Control Facility (FCF) Shaft:
bottom slab completed.
• Bypass Tunnels: Excavation and
lining completed; Bifurcation pipes (to
connect to valves) installed.
• Preparation for Shutdown No. 2
(1/3/23 to 3/8/23) continued.

Approved Budget: $238.2M
Forecast Completion: June 2027
Current Phase: Construction
Expended to Date: $91.6M (Q1: $12.71M)
Variances:
• $0
• 0 days
Top: Priest Adit Bulkhead Door installation;
Bottom: Upstream Bypass Tunnel Bifurcation Pipes

Moccasin Powerhouse (MPH) and
Generator Step Up Transformer (GSU)
Rehabilitation
5 Progress and Status:

A) Step Up Transformers:
• GSU No. 2: final factory testing performed;
delivery due in October; contractor
mobilization in November.

B) Generators Rewind:
• Construction NTP issued in August;
mobilization delayed to October due to
procurement challenges.
• Continued procurement and contractor
staffing challenges risks delaying work to
Winter 2023-2024.

C: Powerhouse Systems Upgrade:
• Draft Conceptual Engineering Report issued.

Approved Budget: $66.7M
Forecast Completion: Dec 2027
Current Phase: Multiple Phases
Expended to Date: $18.6M (Q1: $3.44M)
Variances:
• $0
• 0 days
MPH GSU2 (Delta Star F8628)
undergoing Final Factory Testing

San Joaquin Pipelines (SJPL) Valve and
Safe Entry Improvement
6 Progress and Status:

Phase 1A, SJPL No. 2 Tesla and Oakdale
Entry Improvements:
• Contractor completed submittals.
• Valves passed factory testing (photo).

Phase 1B, SJPL Nos. 3 & 4 Tesla and
Oakdale Entry Improvements:
• Construction contract awarded in August.

Phase 2 Entry Improvements Pelican,
Roselle, Emery:
• 35% design achieved in August.

Phase 3 Entry Improvements: Tesla Surge
Tower:
• Operations scenarios reviewed.

Approved Budget: $142.7M
Forecast Completion: March 2028
Current Phase: Multiple Phases
Expended to Date: $6.1M (Q1: $1.33M)
Variances:
• $0
• 0 days
Factory water pressure test of the new
60-inch Butterfly Valve in South Korea

QUESTIONS?
41k) San Francisco
Water Power Sewer
Services of the San Francisco Public Utilities Commission DATE: December 22, 2022
525 Golden Gate Avenue, 13th Floor
San Francisco, CA 94102
T 415.554.3155
F 415.554.3161
rry 415.554.3488
TO: Commissioner Newsha Ajami, President
Commissioner Sophie Maxwell, Vice President
Commissioner Tim Paulson
Commissioner Tony Rivera
Commissioner Kate Stacy
FROM: Dennis J. Herrera, General Manager
RE: Hetch Hetchy Capital Improvement Program Quarterly Report Quarterly Report (1st Quarter! FY 2022-2023)
Enclosed please find the Hetch Hetchy Capital Improvement Program (HCIP) Quarterly Report for the 1st Quarter (Q1) 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 July 1, 2022 to September 30, 2022.

This quarterly report incorporates all the changes made to the Hetch Hetchy Capital Improvement projects according to the 10-Year Hetch Hetchy Water and Power Enterprise Capital Plan for FY2022-23 to FY2031-32, presented to and approved by this Commission on February 8, 2022.

Attachment London N. Breed
Mayor

Newsha Ajaml
President
Sophie Maxwell
Vice President
Tim Paulson
Commissioner
Tony Rivera
Commissioner
Kate Stacy
Commissioner
Dennis J. Herrera
General Manager
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.

QUARTERLY REPORT
Hetch Hetchy Capital Improvement Program
July 2022 – September 2022
Published: December 22, 2022
DRAFT

i
HCIP Quarterly Report Q1-FY2022-2023 (07/01/22– 09/30/22)

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 July 1, 2022 to September 30, 2022.

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, five (5) projects in construction, two (2) projects that are multiple phases, and one (1) project in closeout.

Approved Budget for Projects in Each Phase

ii
HCIP Quarterly Report Q1-FY2022-2023 (07/01/22– 09/30/22) 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.
* Variance is cost variance from the current approved budget that occurred during the quarter. Negative number is reflecting cost increases since last quarter, and positive number is reflecting 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 Valve and Safe Entry Improvements project, Phase 1A, the contractor on HH- 1005 completed the submittals for both the new 60-inch butterfly valve and the new 24-inch butterfly valve in June 2022, and both valves passed factory pressure tests in August. The 60- inch and 24-inch valves will be shipped from South Korea and China respectively to California next quarter. For Phase 1B, the Commission approved the award of construction contract HH- 1006 during the quarter on August 23. Notice to Proceed (NTP) will be issued in the next quarter. For Phase 2, 35% design was achieved during the quarter in August.  For the Moccasin Powerhouse Bypass Upgrades project, the consultant continued work on the conceptual engineering report (CER) A topographical and utility survey was completed in August. The Design Criteria and a technical memorandum on Hydraulic Evaluation of Proposed Alternative-3 were also completed during the quarter.

Table A. Program Cost Summary
Program

Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q1/FY22-23
Forecast
Costs
($ Million)
(C)

Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E)
Program Total $195.67 $862.31 $862.31 - -
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 10/03/11  10/30/35 10/30/35 -

iii
HCIP Quarterly Report Q1-FY2022-2023 (07/01/22– 09/30/22)  For Moccasin Powerhouse (MPH) and Generator Step-Up (GSU) Rehabilitation project, subproject A (HH-1003R, MPH GSU Transformer Installation), the second new Delta Star GSU2 (F8628) transformer completed shop testing and was scheduled for delivery on site in October. The contractor successfully completed potholing for installation of GSU2 in August 2022, received final foundation design drawings in September 2022, and is scheduled for mobilization to the site next quarter, in November 2022. For subproject B (DB-121R2, MPH Generators Rehabilitation), Construction Notice to Proceed (NTP) issued on August 15. For subproject C (MPH Systems Upgrades), the draft conceptual engineering report (CER) was issued for City review during the quarter, with a presentation to the technical steering committee scheduled for December.
 For Transmission Lines 7/8 Upgrades project, the Notice to Proceed on the construction contract was issued September 28.
 For the O’Shaughnessy Dam Outlet Works Phase 1 project, subproject A (Bulkhead): During this quarter, work continued on preparation of a progressive-design-build specification and bid package for the design and construction of the bulkhead. Subproject B (Access & Drainage): A closed-circuit television (CCTV) inspection of the existing dam drain system was completed in September. Subproject C (Instream Flow Release Valve Replacement): The Conceptual Engineering Report (CER) was completed and approved by the Technical Steering Committee (TSC) on September 15. The Bureau of Land Management (BLM) gave approval in August for the requested Raker Act boundary correction.
 For the Mountain Tunnel Improvement project, this quarter’s progress included completing the installation of the Flow Control Facility (FCF) bottom slab and utility trenches. The excavation and final lining of both Bypass Tunnels were completed along with partial installation of the large diameter steel water pipe and steel bifurcation pieces inside those tunnels. The excavation and initial lining were completed for the entire 1,000 feet of the new Priest Adit tunnel. The large Priest Adit bulkhead door arrived at the site and was transported down the adit and hung into position. Work is progressing at the FCF and the Priest Adit in preparation for the tie-in to the existing Mountain Tunnel during Shutdown No.2. which begins January 3, 2023.
 For Bridge Replacement, Lake Eleanor Dam Bridge subproject, the engineering consultant completed structural analysis of the existing bridge and the improvement alternatives. For the O’Shaughnessy Adit Access Bridge subproject, the project team presented selected alternatives to the Technical Steering Committee (TSC) and received approval on July 7.  For the Canyon Tunnel Rehabilitation project, a draft conceptual engineering report (CER) was completed on August 2, and a workshop to present it to staff was held on August 8. A Technical Steering Committee meeting was held to consider the project on September 1, and approval was received to move forward to the design phase. Bureau of Land Management gave approval for a right of way boundary correction necessary to this project on September

19. iv
HCIP Quarterly Report Q1-FY2022-2023 (07/01/22– 09/30/22)

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HETCH HETCHY
WATER AND POWER (HHWP)–

WATER DIVISION CAPITAL IMPROVEMENT PROGRAMS
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HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22)

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 CAPITA

L IMPROVEMENT PROGRAM (HCIP)

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HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22)

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:
 Buildings – projects to provide safe and code compliant work spaces.  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.
 Powerhouses – projects to improve facilities at the Holm, Kirkwood, and Moccasin powerhouses.
 Roads & Bridges – projects intended to replace bridges that are utilized to access HHWP assets.
 Switchyard & Substations – projects to meet operational objectives for power, including reliability, regulatory compliance, and sustainability.  Tunnels – projects to repair tunnels along the HHWP system (other than Mountain Tunnel).  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.

2. PROGRAM STATUS
This Quarterly Report presents the progress made on HCIP between July 1, 2022 and September 30, 2022. This document serves as the first (1st) Quarterly Report in Fiscal Year 2022-2023 (FY23) published for the HCIP.

This quarterly report incorporates all the changes made to the 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, under Resolution No. 22-0031 (2022 HCIP). The 10-Year Capital Plan for FY2022-23 to FY2031-32 is the new baseline for project 1 HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) scopes, schedules, and budgets starting in the first quarter (Q1) of FY2022-23. The 2022 HCIP is a subset of the Hetch Hetchy Water 10-year CIP for FY2023-2032 and includes individual projects over $5 million that were then currently active or intended to be active by June 30, 2022 at the time proposed to the Commission on February 8, 2022.

This baseline for comparison will remain the same until adoption of a new 10-Year CIP; the baseline will be updated with the changes in the adopted CIP at the start of the new fiscal year following adoption.

There are seventeen (17) projects in the 2022 HCIP together with (3) project development (PD) accounts for program-level expenditures for each of the Water, Power, and Joint Programs. There were no projects added to or removed from the 2021 HCIP. 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 September 30, 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 2.2 shows the total number of projects in the following stages as of September 30, 2022: Pre- construction, Construction, and Post-construction.

Figure 2.1 Approved Budget for Projects in Each Phase
2 HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22)

Figure 2.3 summarizes the environmental review status of the HCIP projects as of September 30, 2022.

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

3. PROGRAM COST SUMMARY
The 2022 HCIP has an approved budget of $862.31M. This is $55.01M greater than the 2021 HCIP approved budget of $807.30M. The increase in the program’s approved budget is attributed to the following factors:

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

3 HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) • The 2021 HCIP carried a negative cost variance forecast in Q4/FY21-22 of $45.51M; the Q4 project budget variances have now been included in the 2022 HCIP approved project budgets. • The 10014072 Water Only Project Development budget was increased by $2.60M. • The 10014092 Power Only Project Development budget was increased by $3.41M. • The 10014116 Joint Project Development budget was increased by $5.84M. • The 10014075 Holm and Other Powerhouse Projects is in closeout phase, and the budget was decreased by $2.36M.

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 each $862.31 million.
* Variance is cost variance from the current approved budget that occurred during the quarter. Negative number is reflecting cost increases since last quarter, and positive number is reflecting cost reduction since last quarter.

Table 3. Cost Summary
Subprograms

Expenditures
To Date
($ Million) (A)
Current
Approved
Budget
($ Million)
(B)
Q1/FY22-23
Forecast
Costs
($ Million)
(C)

Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E )
Water Infrastructure $12.64 $155.87 $155.87 - -
Water Conveyance (Water) $8.42 $146.40 $146.40 - -
Water Infrastructure Project
Development $4.22 $9.47 $9.47 - -
Power Infrastructure $68.80 $205.30 $205.30 - -
Powerhouse $39.75 $118.58 $118.58 - -
Switchyard & Substations (Power) $22.18 $34.25 $34.25 - - Transmission Lines $3.76 $37.97 $37.97 - -
Power Infrastructure Project
Development $3.11 $14.50 $14.50 - -
Joint Infrastructure $114.23 $501.13 $501.13 - -
Water Conveyance (Joint) $5.92 $47.25 $47.25 - -
Dams & Reservoirs (Joint) $6.98 $136.88 $136.88 - -
Mountain Tunnel $91.58 $238.22 $238.22 - -
Roads & Bridges (Joint) $2.07 $29.37 $29.37 - -
Tunnels (Joint) $0.83 $8.43 $8.43 - -
Utilities (Joint) $0.67 $8.79 $8.79 - -
Joint Infrastructure Project
Development $6.20 $32.18 $32.18 - -
Overall Program Total $195.67 $862.31 $862.31 - -
4 HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22)

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.

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 either not-initiated, on-hold, in closeout, or completed.

During this Quarter (Q1 FY22-23), the following major project milestones were achieved:
 35% Design for SJPL Valve and Safe Entry Improvement (Phase 2)  Construction Notice to Proceed (NTP) for Moccasin Powerhouse and GSU Rehabilitation (DB- 121R2 - Phase 2)
 Construction NTP for Transmission Lines 7/8 Upgrades (HH-1007)  Conceptual Engineering Report (CER) for O'Shaughnessy Dam Outlet Works Phase I (Subproject C)
Table 4. FY23-32 CIP Approved vs. Current Forecast Schedule Dates Sub-Program
2022
Approved
Project
Start
Actual
Start
2022
Approved
Completion
Current
Forecast
Completion
Schedule
Variance
(Months)
Water Infrastructure 03/26/12 03/26/12 06/30/33 06/30/33 - Power Infrastructure 05/29/12 05/29/12 10/30/35 10/30/35 - Joint Infrastructure 10/03/11 10/03/11 06/30/33 06/30/33 - Overall
HCIP Projects 10/03/11 10/03/11 10/30/35 10/30/35 -
5 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 $3.7 12/30/22 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 $15.0 12/01/27 10014086 - Moccasin Powerhouse and GSU
Rehabilitation
Phase 1
Phase 2
Phase 3
10014087 - Warnerville Substation Rehabilitation
Phase 1 (DB-127R)
Phase 2a
Phase 2b
$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 $4.0 02/28/23 07/14/21 (Phase 1A),
10/29/21 (Phase 1B),
02/15/23 (Phase 2) &
10/28/22 (Phase 3)
05/16/22 (Phase 1A),
11/07/22 (Phase 1B),
11/16/23 (Phase 2) &
07/01/23 (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)
Q1 - FY22-23
02/28/2511/07/22 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),
05/12/22 (Phase 2) &
03/29/24 (Phase 3)
06/07/21 (Phase 1),
08/15/22 (Phase 2) &
10/02/24 (Phase 3)
Q1 - FY22-23
FY23-32
$142.7 03/13/28$95.3 07/01/25 $98.9 03/13/28
Current Status
Conceptual Engineering
Report (CER) Awarded Construction135% Design 95% Design Q1 - FY22-23
11/17/20 04/06/21 Q1 - 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 1),
7/01/20 (Phase 2a) &
01/01/21 (Phase 2b)
$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 Q1 - FY22-23
Q1 - 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 1),
01/18/21 (Phase 2a) &
01/03/23 (Phase 2b)
04/01/16 (Phase 1),
04/22/21 (Phase 2a) &
09/01/23 (Phase 2a)
12/24/16 (Phase 1),
08/16/21 (Phase2a) &
04/04/24 (Phase 2b)
11/26/18 (Phase 1),
N/A (Phase 2a) &
02/03/25 (Phase 2b)
Q1 - 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 Q1 - FY22-23
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
Current StatusConceptual Engineering
Report (CER) Awarded Construction135% Design 95% DesignProject Initiation Most Recent CIP Approved Budget
Project Name
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 $11.9 06/30/27 $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 $8.4 09/01/26 $8.8 04/07/26 $8.8 04/07/26 - - $8.8 04/07/26 TBD TBD TBD TBD $8.8 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 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. 02/03/14 03/06/23 03/30/16 12/14/23 12/17/24 Q1 - FY22-23 09/16/2512/31/24
10037351 - Moccasin Dam Long-Term
Improvements
3 FY23-32 05/03/21 04/28/23 07/21/23 12/31/24 05/08/26 Q1 - FY22-23 05/22/23 (Subproject A),
09/19/23 (Subproject B) &
07/17/23 (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)
N/A (Subproject A),
N/A (Subproject B) &
11/07/22 (Subproject C)
$47.9 $17.2 $47.909/16/25 TBD TBD TBD $47.909/16/25 TBD TBD TBD Q1 - FY22-23
N/A (Subproject A),
N/A (Subproject B) &
02/07/23 (Subproject C)
10014115 - Cherry Dam Spillway - Short Term
Improvements
FY23-32 03/01/21 06/30/23 10/31/23 06/11/24 02/18/25 Q1 - FY22-23 10014110 - Moccasin Wastewater Treatment Plant4
FY23-32 01/03/22
FY23-32 02/27/20 Q1 - FY22-23
FY23-32 10/03/11 12/29/17 05/15/18 07/31/19 10/13/20 Q1 - FY22-23 - 04/29/22 12/30/22 11/27/23
10014108 - Canyon Tunnel Rehabilitation
10014114 - Mountain Tunnel Improvement Project
7/18/23 (Subproject 1) &
03/17/23 (Subproject 2)
Q1 - FY22-23
TBD
FY23-32
11/03/23 (Subproject 1) &
05/05/23 (Subproject 2)
6/03/24 (Subproject 1) &
01/12/24 (Subproject 2)
04/18/25 (Subproject 1) &
02/03/25 (Subproject 2)
TBD TBD $29.4 07/01/2705/25/37$44.3 $44.3 12/30/25 TBD TBD TBD TBD TBD 7 HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22)

This page is intentionally left blank.

8 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22)

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)
10035574 SJPL
Tesla Valves
Replacement
CN $3,740 $3,740 $3,740 $2,367 $0 0% 12/30/2022 12/30/2022 12/30/2022 0 10035575 SJPL
Valve and Safe
Entry Improvement
MP $142,662 $142,662 $142,662 $6,051 $0 0% 03/13/2028 03/13/2028 03/13/2028 0 Power Infrastructure
Powerhouse
10036809 Moccasin
Powerhouse Bypass
Upgrades
PL $15,007 $15,007 $15,007 $620 $0 0% 12/01/2027 12/01/2027 12/01/2027 0 10014086 Moccasin
Powerhouse and
GSU Rehabilitation
MP $66,714 $66,714 $66,714 $18,559 $0 0% 12/03/2027 12/03/2027 12/03/2027 0 Switchyard & Substations (Power)
10014087
Warnerville
Substation
Rehabilitation
CN $34,248 $34,248 $34,248 $22,181 $0 0% 11/25/2026 11/25/2026 11/25/2026 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 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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 $3,759 $0 0% 01/31/2025 01/31/2025 01/31/2025 0 Joint Infrastructure
Water Conveyance (Joint)
10014088 Moccasin
Penstock
Rehabilitation
PL $47,251 $47,251 $47,251 $5,922
$0 0% 02/28/2028 02/28/2028 02/28/2028 0
Dams & Reservoirs (Joint)
10030758 OSH Dam
Access and
Drainage
CN $3,952 $3,952 $3,952 $3,131 $0 0% 02/28/2023 02/28/2023 02/28/2023 0 10032903
O'Shaughnessy
Dam Outlet Works
Phase I
PL $47,894 $47,894 $47,894 $2,498 $0 0% 09/16/2025 09/16/2025 09/16/2025 0 10037351 Moccasin
Dam & Reservoir
Long-Term
Improvements
PL $73,176 $73,176 $73,176 $578 $0 0% 06/30/2028 06/30/2028 06/30/2028 0 10014115 Cherry
Dam Spillway - Short
Term Improvements
PL $11,861 $11,861 $11,861 $769 $0 0% 06/30/2027 06/30/2027 06/30/2027 0 Mountain Tunnel
* 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 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10014114 Mountain
Tunnel Improvement
Project
CN $238,219 $238,219 $238,219 $91,577 $0 0% 06/03/2027 06/03/2027 06/03/2027 0 Roads & Bridges (Joint)
10035086 Bridge
Replacement
PL $29,371 $29,371 $29,371 $2,066 $0 0% 07/01/2027 07/01/2027 07/01/2027 0 Tunnels (Joint)
10014108 Canyon
Tunnel
Rehabilitation
PL $8,429 $8,429 $8,429 $826 $0 0% 09/01/2026 09/01/2026 09/01/2026 0 Utilities (Joint)
10014110 Moccasin
Wastewater
Treatment Plant
DS $8,795 $8,795 $8,795 $667 $0 0% 04/07/2026 04/07/2026 04/07/2026 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 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22)

7. PROJECT STATUS REPORT
10035574 - SJPL Tesla Valves Replacement
Project Description: 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), the scope of the SJPL Tesla Valve Replacement was reduced to focus on completing the replacement of TUV101 only. The remainder of the work will be combined with the work of the SJPL Valve and Safe Entry Improvement project.

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

Approved
Forecast
Actual
$ 3.74 M
$ 3.74 M
$ 2.37 M
Project Schedule:

Approved
Forecast
May-19
May-19
Dec-22
Dec-22
Project Percent Complete: 78.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 08/26/2020 A 04/06/2021 A 11/30/2022
Progress and Status:

The Job Order Contract (JOC) contractor was not able
to finalize the as-built drawings in the quarter as had been anticipated. Final completion of the construction
phase will be delayed to next quarter.

Issues and Challenges:

None at this time.

The new TUV101 prior to installation earlier this year
N/A
12 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 6.05 M
Project Schedule:

Approved
Forecast
Jul-19
Jul-19
Mar-28
Mar-28
Project Percent Complete: 12.3%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 01/27/2022 A 12/25/2021 A 05/16/2022 A 09/13/2024
B 01/27/2022 A 04/21/2022 A 11/07/2022 09/11/2024
C 01/27/2022 A 06/01/2023 11/16/2023 05/24/2027
D 12/06/2022 12/29/2022 07/01/2023 01/15/2025
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 contractor on HH-1005 completed the submittals for both the new 60- inch butterfly valve and the new 24-inch butterfly valve in June 2022. The valves have been manufactured, and they
passed the factory water pressure tests during this quarter in August. The 60-inch and 24-inch valves will be shipped from South Korea and China respectively to California next
quarter. For Phase 1B, the Commission approved the award of construction contract HH-1006 during the quarter on
August 23. Notice to Proceed (NTP) will be issued in the next quarter. For Phase 2, 35% design was achieved during the quarter in August. For Phase 3, the project team worked closely with Hetch Hetchy Water and Power (HHWP), Water Supply and Treatment Division, and Water Quality Division to address the issues mentioned below.

Issues and Challenges:

Surge tower operations continue to be reviewed to better understand scenarios when the surge tower might overflow.

At this time, there is no change in forecast for the overall budget and schedule.

Factory water pressure test of the new 60-inch Butterfly Valve in South Korea
13 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 15.01 M
$ 0.62 M
Project Schedule:

Approved
Forecast
Sep-20
Sep-20
Dec-27
Dec-27
Project Percent Complete: 7.3%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 08/26/2024 08/27/2024 02/28/2025 06/01/2027 Progress and Status:

The consultant continued work for the planning phase
conceptual engineering report (CER) that is anticipated to be completed next quarter. The preferred alternative is to move the bypass system to a location outside of the powerhouse and north of the Moccasin penstocks. A topographical and utility survey was completed in August. The Design Criteria document and the Hydraulic Evaluation of Proposed
Alternative-3 Technical Memorandum were also completed
during the quarter.

Issues and Challenges:

None at this time.

Proposed Location of the New Valve House for the Bypass Line 14 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 18.56 M
Project Schedule:

Approved
Forecast
Jan-16
Jan-16
Dec-27
Dec-27
Project Percent Complete: 29.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 09/28/2020 A 11/20/2020 A 06/07/2021 A 05/23/2023
B 09/28/2020 A 10/30/2020 A 08/15/2022 A 06/17/2024
C 04/25/2023 04/01/2024 10/02/2024 06/07/2027
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, HH-1003R, the second new
Delta Star GSU2 (F8628) transformer completed shop
testing and was scheduled for delivery on site on October 28, 2022. The contractor successfully completed potholing for installation of GSU2 in August 2022, received final
foundation design drawings in September 2022, and is
scheduled for mobilization to the site next quarter, in November 2022. For subproject B, DB-121R2, Construction Notice to Proceed (NTP) issued during the quarter on August

15. For subproject C, MPH Systems Upgrades, the draft
conceptual engineering report (CER) was issued for City review during the quarter, with a presentation to the technical steering committee scheduled for December 2022.

Issues and Challenges:

Mobilization for construction of the Generator M2 Rewind project is delayed due to procurement challenges that
delayed key equipment deliveries.

MPH GSU2 (Delta Star F8628) undergoing Final Testing at Factory 15 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 22.18 M
Project Schedule:

Approved
Forecast
Sep-15
Sep-15
Nov-26
Nov-26
Project Percent Complete: 77.8%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 03/31/2016 A 01/24/2017 A 10/05/2017 A 03/31/2024
B 07/07/2023 09/06/2024 02/03/2025 02/04/2026
Progress and Status:

This project has 2 construction contracts: (A) Warnerville Substation Phase 1 – DB-127R; (B) Warnerville Substation Phase 2. The project team, in coordination with the City Attorney’s office, is working to close out the contract DB-127R, Warnerville Substation Rehabilitation. Contract HH-1008 is a part of the “breaker failure contingency plan” that 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 but not otherwise is still being determined. Warnerville Substation Rehabilitation Phase 2 will use a design-bid-build contract. The initial site visit by the project team was completed in July 2022.

Issues and Challenges:

None at this time.

Four 230 kV SF6 Circuit Breakers to be installed during Phase 2 16 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 3.76 M
Project Schedule:

Approved
Forecast
Dec-19
Dec-19
Jan-25
Jan-25
Project Percent Complete: 17.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 11/04/2021 A 02/11/2022 A 09/28/2022 A 07/26/2024 Progress and Status:

The Notice to Proceed for the construction contract
was issued on September 28. The pre-construction
conference was held, and the Contractor began
work on prerequisite submittals.

Issues and Challenges:

None at this time.

Transmission Line 7/8 Tower 508S Looking North
17 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 5.92 M
Project Schedule:

Approved
Forecast
Feb-16
Feb-16
Feb-28
Feb-28
Project Percent Complete: 13.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 10/07/2024 10/08/2024 04/16/2025 08/24/2027 Progress and Status:

A site visit was held on August 9 to inspect the butterfly valves at the West Portal Valve House. Detailed discussions on the proposed Phased Array Ultrasonic Testing to
investigate the condition of the pipe and welds were held at several meetings and site visits during the quarter. A notice to proceed was issued on September 27 to the Job Order
Contract (JOC) contractor to support Phased Array
Ultrasonic Testing to determine the condition of the hammer forged welded steel pipeline material of the Moccasin
Penstock. A Technical Memorandum to evaluate the
condition of the Moccasin penstock manway opening and to assess the need for any security measures for the facility was developed and reviewed.

Issues and Challenges:

None at this time.

Joint Site Visit to kick off Phased Array Ultrasonic Testing effort 18 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 3.95 M
$ 3.13 M
Project Schedule:

Approved
Forecast
Mar-17
Mar-17
Feb-23
Feb-23
Project Percent Complete: 88.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 07/16/2020 A 03/18/2021 A 09/27/2021 A 11/30/2022 Progress and Status:

The contractor has not submitted as-built drawings, which is holding up Final Completion of the contract. The project team is preparing closeout documents.

Issues and Challenges:

The anticipated date for Construction Final Completion has been delayed due to failure of the contractor to submit as- built drawings.

New Ladder to Spillway and Fall Protection System
19 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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 (4) NAR and AAR for the existing drum gates.

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

Approved
Forecast
Actual
$ 47.89 M
$ 47.89 M
$ 2.5 M
Project Schedule:

Approved
Forecast
Feb-18
Feb-18
Sep-25
Sep-25
Project Percent Complete: 8.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 12/30/2022 01/03/2023 09/01/2023 03/14/2025
B 03/31/2023 04/03/2023 11/06/2023 06/28/2024
C 05/31/2023 03/07/2023 08/31/2023 03/27/2025
Progress and Status:

Subproject A (Bulkhead): During this quarter, work
continued on preparation of a progressive-design-build
specification and bid package for the design and
construction of the bulkhead. Subproject B (Access &
Drainage): A closed-circuit television (CCTV) inspection of the existing dam drain system was completed in
September. Subproject C (Instream Flow Release Valve
Replacement): The Conceptual Engineering Report (CER)
was completed and approved by the Technical Steering
Committee (TSC) on September 15, 2022. Work began on
the detailed design.

Cultural and biological surveys are being performed as part of the environmental assessment. The Bureau of Land
Management (BLM) approval for the Raker Act boundary
correction was received in August. Subproject D (Slide
Gate) and Subproject E (Drum Gate): The engineering
consultant continued work on the needs assessment.

Issues and Challenges:

The project schedule is dependent on timely completion and efficient coordination of the following: the detailed design, the bid and award of the construction contracts, and the planned 2023-2024 Canyon Tunnel shutdown.

O’Shaughnessy Dam Spillway and Drum Gates
20 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 0.58 M
Project Schedule:

Approved
Forecast
May-21
May-21
Jun-28
Jun-28
Project Percent Complete: 1.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/30/2026 01/02/2026 09/03/2026 12/30/2027 Progress and Status:

The engineering consultant continued work on the
conceptual engineering phase during the quarter. Hydraulic evaluation and conceptual design to optimize the
configuration and capacity of the new auxiliary spillway are in progress.

Issues and Challenges:

None at this time.

Moccasin Dam and Spillway
21 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 11.86 M
$ 0.77 M
Project Schedule:

Approved
Forecast
Mar-21
Mar-21
Jun-27
Jun-27
Project Percent Complete: 12.2%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/18/2024 08/29/2024 04/30/2025 12/31/2026 Progress and Status:

The engineering consultant continued work on the
alternatives analysis. Additional hydraulic analysis and an alternatives study to determine the scope and cost to include flood protection for the lower spillway section were both completed in September. Field geotechnical investigation will be performed next quarter to confirm the site geology and foundation condition.

Issues and Challenges:

None at this time.

Cherry Valley Dam Spillway
22 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 91.58 M
Project Schedule:

Approved
Forecast
Oct-11
Oct-11
Jun-27
Jun-27
Project Percent Complete: 40.9%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 01/14/2020 A 11/13/2019 A 08/01/2023 12/03/2026 Progress and Status:

This quarter’s progress included completing the installation of the Flow Control Facility (FCF) bottom slab and utility trenches. The excavation and final lining of both Bypass Tunnels were completed along with partial installation of the large diameter steel water pipe and steel bifurcation pieces inside those tunnels. The excavation and initial lining were completed for the entire 1,000 feet of the new Priest Adit tunnel. The large Priest Adit bulkhead door arrived at the site and was transported down the adit and hung into
position. Rebar is being placed for the upcoming concrete pour to secure the bulkhead frame into the tunnel rock. The four double-disc knife gate valves are being fabricated off site. Work is progressing at the FCF and the Priest Adit in preparation for the tie-in to the existing Mountain Tunnel during Shutdown No.2. Road improvement work along
Rickson Road at Priest Reservoir is approximately 90%
complete. Road improvement work continued at Adit 5/6
and South Fork Roads. Risk management including
contingency planning is taking place in preparation for the upcoming Shutdown No. 2 beginning January 3, 2023.

Issues and Challenges:

None at this time.

Upstream Bypass Tunnel Bifurcation Unit (This transitions the 9- foot pipe to two 6-foot pipes)
23 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 2.07 M
Project Schedule:

Approved
Forecast
Feb-20
Feb-20
Jul-27
Jul-27
Project Percent Complete: 6.9%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 09/04/2024 07/17/2024 04/18/2025 09/17/2026
B 07/31/2024 08/01/2024 02/03/2025 04/13/2027
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, the engineering
consultant completed the structural analysis for the existing bridge and the improvement alternatives. Work continues on finalization of the alternatives analysis report. For the O’Shaughnessy Adit Access Bridge, the project team
presented the selected alternatives to the Technical Steering Committee (TSC) and received its approval on July 7.

Issues and Challenges:

None at this time.

Aerial View of the Lake Eleanor Dam Bridge
24 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 8.43 M
$ 0.83 M
Project Schedule:

Approved
Forecast
Feb-14
Feb-14
Sep-26
Sep-26
Project Percent Complete: 10.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 07/31/2024 08/01/2024 02/01/2025 02/27/2026 Progress and Status:

A draft conceptual engineering report (CER) was developed on August 2; a workshop to present the draft CER was held on August 8. A Technical Steering Committee meeting was held to consider the project on September 1, and approval was received to move forward to the design phase. Bureau of Land Management’ s decision letter for the right of way boundary correction was issued during the quarter on
September 19.

Issues and Challenges:

None at this time.

Site visit to evaluate the existing plug at Hetch Hetchy Adit within the Canyon Tunnel
25 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22) 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
$ 8.79 M
$ 0.67 M
Project Schedule:

Approved
Forecast
Jan-22
Jan-22
Apr-26
Apr-26
Project Percent Complete: 12.8%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 11/14/2023 05/10/2023 11/28/2023 09/09/2025 Progress and Status:

A draft design criteria report was developed on August 2, and a workshop to present these design criteria to Hetch Hetchy Water and Power was held on August 5.

Issues and Challenges:

None at this time.

Site visit with HHWP, Consultant, and EMB
26 Q1-FY2022-2023 (07/01/22 - 09/30/22) Hetch Hetchy Capital Improvement Program Quarterly Report

8. On-Going Construction*
The following table reflects active construction contract(s) with an original contract amount greater than $1M.

Actual
%
Complete
Current
Forecast
Cost
Schedule
(Cal. Days)
NTP
Date
Approved
Construction
Final
Completion
Variance
(Original - Forecast)BudgetSchedule
Construction Contract Current
Forecast
Cost*
Current
Forecast
Construction
Final
Completion*
Approved
Contract
Cost
Water Infrastructure
$ 11,879,454$ 11,879,45409/13/2409/13/2405/16/22
10035575 - SJPL Valve & Safe Entry
Improvement - Phase 1A - HH-1005 - - 11.3%
Power Infrastructure
$ 3,653,575$ 3,653,57505/23/2305/23/2306/07/21
10014086 - Moccasin Powerhouse
Transformers Installation - HH-1003R
- - 68.0%
$ 28,898,986$ 28,898,98606/17/2406/17/2408/15/22
10014086 - Moccasin Powerhouse
Generator Rehab - DB-121R2
- - 18.0%
$ 14,591,450$ 14,591,45003/31/2403/31/2410/05/17
10014087 - Warnerville Switchyard -
DB-127R **
- - 90.0%
$ 26,368,155$ 26,368,15507/26/2407/26/2409/28/22
10035721 - Transmission Lines 7/8
Upgrade - HH-1007 - -0 .9%
Joint Infrastructure
$ 1,648,556$ 1,648,55611/30/2208/21/2209/27/21
10030758 - O'Shaughnessy Dam Fall
Protection Improvements - HH-1002R
(68) - 90.4%
$ 157,737,72312/03/26 $155,040,367 12/03/2601/29/21
10014114 - Mountain Tunnel
Improvement - HH-1000R
- ($2,697,356) 34.3%
Program Total
for On-Going
Construction $ 242,080,543 $ 244,777,899
Current
Forecast Cost*
Approved
Contract Cost
Variance
($2,697,356) (1.1%)
Cost Percent
Note:
* The Current Forecast Cost and Current Forecast Construction Final Completion include all approved, pending, and potential change orders.
** The contract is funded with both CIP and non-CIP funds, but only the CIP funded amount is reflected. 27 Hetch Hetchy Capital Improvement Program Quarterly Report Q1-FY2022-2023 (07/01/22 - 09/30/22)

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
Power Infrastructure
Powerhouse
10014075 - Holm and Other Powerhouse Projects 05/14/2021 05/14/2021 $12,959,275 $12,869,573 TOTAL $12,959,275 $12,869,573
28 10. COMPLETED PROJECTS
There are no completed projects
HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) 29 This page is intentionally left blank
HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) 30 Appendices

APPENDICES

A PROJ E

CT DESCRIPTIONS

B APPROVED PROJECT L EVEL SCHEDULES / BUDG ETS

C LIST OF ACRONYMS
HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) This page is intentionally left
blank
HClP Quarterly Report Q1-FY2022-2023 (07/01/22 – 09/30/22) APPENDICES Q1-FY2022-2023 (07/01/22 - 09/30/22)
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 Q1-FY2022-2023 (07/01/22 - 09/30/22)
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 Q1-FY2022-2023 (07/01/22 - 09/30/22)
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 Q1-FY2022-2023 (07/01/22 - 09/30/22)
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 Q1-FY2022-2023 (07/01/22 - 09/30/22)
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 Q1-FY2022-2023 (07/01/22 - 09/30/22)
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.

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 Categorical Exemption
CCTV Closed-Circuit Television
CEQA California Environmental Quality Act
CER Conceptual Engineering Report
CIP Capital Improvement Program
CRT Coast Range Tunnel
DB Design, Build
DCR Design Criteria Report
DSOD Division of Safety of Dams
EMB Engineering Management Bureau
FCF Flow Control Facility
FY Fiscal Year
GSU Generator Step-Up
GWH Gigawatt Hours
HCIP Hetch Hetchy Capital Improvement Program
HH Hetch Hetchy
HHWP Hetch Hetchy Water and Power
HPH Holm Powerhouse
IFR Instream Flow Release
JOC Job Order Contract
KPH Kirkwood Powerhouse
MGD Million Gallons per Day
MID Modesto Irrigation District
MPH Moccasin Powerhouse
NAR Needs Assessment Report
NERC North American Electric Reliability Corporation
NTP Notice to Proceed
OSH O'Shaughnessy Dam
PD Project Development
PG&E Pacific Gas and Electric Company
PLC Programmable Logic Controllers
PSI Per Square Inch
R&R Renewal and Replacement
SBR 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 Q1-FY2022-2023 (07/01/22– 09/30/22) A8

CleanPowerSF Sfpuc CommissionJanuary 10, 2023

CleanPowerSF Sfpuc Commission
January 10, 2023