OUR MISSION: To provide our customers with high-quality, efficient and reliable water, power and sewer services in a manner that values environmental and community interests and sustains the resources entrusted to our care.
525 Golden Gate Avenue, 13th Floor
San Francisco, CA 94102
T 415.554.3155
F 415.554.3161
TTY 415.554.3488
DATE: May 30, 2025
TO: Commissioner Kate H. Stacy, President
Commissioner Joshua Arce, Vice President
Commissioner Avni Jamdar
Commissioner Steve Leveroni
Commissioner Meghan Thurlow
FROM: Dennis J. Herrera, General Manager
RE: Hetch Hetchy Capital Improvement Program Quarterly Report Quarterly Report (3 rd Quarter / FY 2024-2025)
Enclosed please find the Hetch Hetchy Capital Improvement Program (HCIP) Quarterly Report for the 3 rd Quarter (Q3) of Fiscal Year (FY) 2024-2025. 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 January 1, 2025 to March 31, 2025.
Attachment
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QUARTERLY REPORT
Hetch Hetchy Capital Improvement Program
January 2025 – March 2025
Published: May 30, 2025
DRAFT
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i
HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
EXECUTIVE SUMMARY
This quarterly report provides a summary update on t he 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 January 1, 2025 to March 31, 2025.
This quarterly report includes all approved HCIP projects in the Hetch Hetchy Water Capital Improvement Program according to the 10-Year C apital Plan for FY2024-25 to FY2033-34, presented to and adopted by the Commission on February 13, 2024 (2024 HCIP). There are twenty-two (22) projects in the 2024 HCIP together with three (3) project development (PD) accounts for program-level expenditures for each of the Water, Power, and Joint Programs. As part of the recent Update to the 10- Year Capital Plan for FY2025-26 to FY2034-35 that was adopted by the Commission during the quarter on February 11, 2025, none of the 22 HCIP project budgets or schedules were changed from the 2024 HCIP.
Program Current Status:
As of the end of the reporting period, the status of the 22 HCIP projects (excluding for these purposes the 3 PD accounts) is as follows: one (1) project is not yet initiated; thirteen (13) projects are in planning, design, or bid & award; three (3) projects are in construction; four (4) projects have subprojects in multiple phases including construction; and one (1) project is in closeout. During this quarter, the following major project milestones were achieved:
Two projects - the SJPL Valve Remote Control and Monitoring, and Cherry-Eleanor Pumps were initiated, and the planning phase began.
The Moccasin Dam & Reservoir Long Term Improvement project moved from planning phase to design phase.
Approved Budget for Projects in Each Phase
ii
HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) 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 the Current Approved Budget and Current Forecast Cost of $2,016.81 million and $2,063.87 million, respectively. Reasons for the cost variances are included in Section 7 of this report.
* “A” is used after a date to represents an actual date as opposed to a forecast or approved date.
Program Key Updates:
The key updates for the HCIP include:
For the SJPL Valve and Safe Entry Improvemen ts project, all valves for Phase 1A (HH-1005) passed factory acceptance tests were successfully installed by the contractor during the Hetch Hetchy water outage, subsequently passed functional testing, and are awaiting final wet testing.
Similarly, the Phase 2A (HH-1012) contractor installed all successfully tested valves and was awaiting final wet testing. For Phases 2B&C (HH-1016) SFPUC received a responsive bid that was ten percent lower than the engineers estimate; contract Notice to Proceed is expected in early May. In Phase 3 (HH-1009) the contractor successfully installed the 60-inch diameter surge pipe and surge tower and tied them into the water system.
Table A. Program Cost Summary
Program
Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q3/FY24-25
Forecast
Costs
($ Million)
(C)
Cost
Variance
($ Million)
(D = B - C)
Cost Variance
Over
Reporting
Period *
($ Million)
(E)
Program Total $435.46 $2,016.81 $2,063.87 ($47.06) ($9.87) * Negative number is reflecting cost increases since last quarter, and positive number is reflecting cost reduction since last quarter.
Table B shows the Approved and Forecast Completion Dates.
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 A* 12/31/41 12/31/41 -
iii
HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) For the Moccasin Powerhouse Bypass Upgrades project, the 95% design package review is complete and project team is progressing with the 100% design deliverable. For the Moccasin Powerhouse and Generator Step-Up (GSU) Rehabilitation project, during this quarter, the contractor for Subproject B (contract DB-121R2) discovered alignment problems with the existing generator shaft for Unit 1; the project team is coordinating with the contractor and HHWP to address anticipated delays to final completion. For Subproject C, the design team is incorporating 65% design comments into the 95% design deliverable. For the Warnerville Substation Rehabilitation – Phase 2 project, the second shutdown period was removed from the contract because of an update in PG&E’s scope of work at the South Yard. The contract is scheduled for advertisement to bid in April 2025. For the Moccasin Switchyard project, a final Needs Assessment Report was completed, and consultant team is on schedule to deliver the Alternatives Analysis Report in August 2025. For the Moccasin Penstock Rehabilitation project, the Alternative Analysis workshops were held to present the preferred alternatives. The draft Alternatives Analysis Report has been revised to incorporate stakeholder’s comments and recent Right of Way developments. For the Moccasin Engineering & Records Building project, work on the Design Development Package continues. Scheduled completion date for this package is June 2025. Design team and Project Manager are preparing for upcoming Civic Design Review phase 2 on April 21, 2025. For the Moccasin Warehouse Building project, a scope increase from a 9,000 square feet building to a 15-20,000 square feet building was proposed and is being evaluated for impacts to budget. A 3
rd party cost estimate will be produced in May 2025 to confirm the new budget. The design team is working towards completion of the Project Development package, expected in May 2025.
For the O’Shaughnessy Dam Outlet Works Phase 1 Subproject A (contract DB-135 for bulkheads rehabilitation), the new bulkheads were delivered, installed, and tested during the Hetch Hetchy water system outage. For Subproject B (contract HH-1015 Drainage & Miscellaneous Dam Improvements), construction is in progress starting with concrete demolition work. For Subproject C (contract HH-1011 Instream Flow Release Valve Replacement), the Instream Flow Release syst em is operational, and punchlist items are being addressed. For Subproject D (Slide Gates) and Subproject E ( Drum Gates), the draft Needs Assessment and Alternative Analysis Report are being revised based on comments received. For the Moccasin Dam & Reservoir Long-Term Improvements project, the 35% design has begun with a target due date of end of April 2025.
For the Cherry Dam Spillway - Short Term Improvements project, the consultant delivered the 65% design package for review; 95% design is expected in May 2025. For the Eleanor Dam Rehabilitation and the Interim Bridge Repair subproject, the project team is coordinating a ‘mock-up’ test for proposed bridge overlay materials, which is scheduled for Spring 2025. The testing of the proposed bridge overlay materials is required to ensure that the selected product will meet the project objectives. The 35% Design Criteria Memo for the subproject has also been delivered for review. For Eleanor Dam and Bridge Long-Term Rehabilitation subproject, the project team received the draft Needs Assessment Review Memo and Erodibility Analysis Report and is sharing th is information amongst project stakeholders. A finalized Needs Assessment Review Memo is expected in May 2025.
iv
HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) For the Early Intake Dam – Long Term project, the final draft Alternatives Analysis Report (AAR) was issued this quarter, and the SFPUC is performing an internal review and comparison of the alternatives before further development of the AAR occurs. For the Mountain Tunnel Improvements Project Subproject A (HH-1000R) contract, The Hetch Hetchy water system outage that occurred from December to March this past quarter was Shutdown No. 4 for the Project. The contractor completed all the remaining tunnel lining repair of the existing concrete lining, including a total of eleven miles of tunnel lining repaired, and completed about 50 percent of the contact grouting replacement behind the lining. In addition, two of the four 72-inch Double Disc Knife Gate valves were successfully installed in the bottom of the Flow Control Facility shaft. The Commi ssion approved a modification to the contract to remove scope of work for the South Fork Siphon Extension, South Fork Roadway Improvements, and Adit 5/6 and 8/9 Roadway. This work is planned to be completed in future contract(s). Subproject B (HH-1013) Moccasin Water System Filtration Plant: Construction was delayed due to differing site conditions that resulted in the need to redesign the building foundation. Construction started back up again near the end of this second quarter with construction of some of the drilled piers for the foundation. For Transmission Line Clearance Mitigation – Moderate and Low Risk subproject, the contract specification development is ongoing.
For the Moccasin Wastewater Treatment Plant Replacement (contract HH-1010) project, the slab was constructed and influent tank was placed. Rebar was erected for the walls. For the Cherry Eleanor Pumps – the project was initiated to replace and upgrade pumps and electrical equipment at the Cherry-Eleanor Pump Station to restore its water transfer capabilities. As part of the planning phase, the kickoff meeting for the Needs Assessment Report took place on March 17, 2025. Currently, the consultant is reviewing as-built drawings, equipment records, engineering reports, and other relevant background information. For the SJPL Valve Remote Control & Monitoring – the project was initiated to enable full remote operation of SJPL valve actuators from Moccasin through upgrades to reliable power sources, enhanced security measures, infrastructure improvements, and hydraulic modeling to maintain operations and minimize the risk of asset failure. The kickoff meeting for the Needs Assessment was held on March 14, 2025. Currently, the consultant is reviewing as-built drawings, equipment records, engineering reports, and other relevant background materials.
TABLE OF CONTENTS
HETCH HETCHY WATER AND POWER (HHWP) – WATER DIVISION
CAPITAL IMPROVEMENT PROGRAMS
INTRODUCTION
HETCH HETCHY CAPITAL IMPROVEMENT PROGRAM (HCIP)
1. Program Description
2. Program Status
3. Program Cost Summary
4. Program Schedule Summary
5. Budget and Schedule Trend Summary
6. Project Performance Summary
7. Project Status Report
8. On-Going Construction
9. Projects in Closeout
10. Completed Projects
APPENDICES
A. Project Descriptions
B. Approved Project Level Budgets/Schedules
C. List of Acronyms
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HETCH HETCHY WATER AND POWER (HHWP)–
WATER DIVISION CAPITAL IMPROVEMENT PROGRAMS
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HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
INTRODUCTION
The Hetch Hetchy Water and Power (HHWP) Water Division is 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 Hetc h Hetchy R&R projects is reported annually in the Annual Report on Water Enterprise-Managed Capital Improvement Projects.
The map below shows the location of the assets and facilities associated with HHWP.
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HETCH HETCHY CAPITAL IMPROVEMENT PROGRAM (HCIP)
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HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
1. PROGRAM DESCRIPTION
The Hetch Hetchy Capital Improvement Program (HCIP) is a group of multi-year capital projects to upgrade existing, aging infrastructure so that it will meet the challenges of today and the future. These projects will deliver improvement s 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 1) to provid
e capital improvements needed to cost -effectively ensure that water quality, seismic reliabilit
y, delivery reliability, and water supply objectives established for the Regional Water System facilit
ies managed by HHWP are met, and 2) to optimize the benefits of HHWP power faciliti es operations.
Ongoing development of the HCIP will sustain t he Regional Water System’s status as an unfiltered
water source and a gravity-driven system.
The scope
of HCIP is divided into three major project types: Water, Power, and Joint. The Water sub- program includes only asset improvements benefiting the SFPUC’s water customers. The Power sub- program includes only asset improvements used to generate environmentally friendly hydroelectric energy. The Joint sub-program includes projects for assets that are used for both water delivery and power generation. In addition, projects in each sub-program of the HCIP have been further organized by asset type consisting of the following:
Water Infrastructure
Water Conveyance – projects to enhance the reliability of water delivery through pipelines and penstocks, allowing for both delivery of water to SFPUC customers and delivery of water to powerhouses for power generation.
Power Infrastructure
Powerhouse – projects to improve facilities at the Holm, Kirkwood, and Moccasin powerhouses. Switchyard & Substations – projects to meet operational objectives for power, including reliability, regulatory compliance, and sustainability. Transmission Lines – projects to expand or improve power assets for electricity transmission.
Joint (Water and Power) Infrastructure
Dams & Reservoirs – projects to improve assets used for storage and delivery of water to SFPUC customers, as well as for water storage for power generation. Mountain Tunnel – projects to address deficiencies with the Mountain Tunnel, a critical, non- redundant link in the Hetch Hetchy and Regional Water System that conveys water from Kirkwood Powerhouse to Priest Reservoir.
Roads & Bridges – projects to repl ace or improve bridges that are utilized to access HHWP assets.
Tunnels – projects to repair tunnels along the HHWP system (other than Mountain Tunnel). Utilities – projects to expand or improve utilities for asset and work locations such as water and wastewater treatment faciliti
es.
Buildings – projects to provide safe and code compliant workspaces. 1 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
2. PROGRAM STATUS
This Quarterly Report presents the progress made on HCIP between January 1, 2025 and March 31, 2025. This document serves as the third (3 rd) Quarterly Report in Fiscal Year 2024-2025 (FY25) published for the HCIP.
This quarterly report includes all HCIP projects in the Hetch Hetchy Water Capital Improvement Program according to the 10-Year Capital Plan for FY2024-25 to FY2033-34 (FY25-34 CIP), presented to and adopted by the Commission on February 13, 2024, under Resolution No. 24-0032 (2024 HCIP).
The 2024 HCIP is a subset of the Hetch Hetchy Water 10-Year CIP for FY2025-2034 and includes individual projects over $5 million that were then currently active or intended to be active by July 1, 2024 at the time proposed to the Commission on February 13, 2024. 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. As part of the recent Update to the 10-Year Capital Plan for FY2025-26 to FY2034-35 that was adopted by the Commission during the quarter on February 11, 2025, none of the 22 HCIP project budgets or schedules were changed from the 2024 HCIP.
There are twenty-two (22) projects in the 2024 HCIP together with three (3) project development (PD) accounts for program-level expenditures for each of the Water, Power, and Joint Programs. A description of each project and of each project development account is provided in the Appendix A of this report.
The accrued PD expenditures are included in the Cost Summary in Table 3 in order to give an accurate report of the overall HCIP cost performance.
Figure 2.1 shows the total Approved Budget for all twenty-two (22) projects in each phase of the program as of March 31, 2025 (PD accounts do not have phases and are not included in Figure 2.1).
The number of projects currently in each phase is shown in parentheses.
Figure 2.1 Approved Budget for Projects in Each Phase
2 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) Figure 2.2 shows the total number of projects in the following stages as of March 31, 2025: Pre- construction, Construction, and Post-construction.
Figure 2.3 summarizes the environmental review status of the HCIP projects as of March 31, 2025.
Environmental review is performed for projects under California Environmental Quality Act (CEQA).
Figure 2.2 Number of Projects in Pre-construction, Construction, and Post-Construction Figure 2.3 Program Environmental Review
3 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
3. PROGRAM COST SUMMARY
Table 3 provides an overall cost summary of the 22 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 (difference between cost forecasts reported in Q2/FY2024-25 and in Q3/FY2024-25). The Current Approved Budget and Forecast Cost for the HCIP are $2,016.81 million and $2,063.87 million, respectively.
The overall 2024 HCIP negative Cost Variance of $47.06 million in Table 3 can be attributed to the following projects and their variances are provided below: the reasons for the project variances are reported in section 7:
The Moccasin Powerhouse and GSU Rehabilitation $15.63M negative variance is a continuation of $13.48M and $2.15M negative variances from Q4 of FY23/24 and Q2 FY24/25 respectively.
The Warnerville Substation Rehabilitation Project $1.92M negative variance is a continuation of $0.92M from Q2 of FY24/25 plus a forecast increase of $1.00M during the quarter. The Transmission Lines 7/8 Upgrades $1.90M posit ive variance is a continuation from Q4 of FY23/24.
The Moccasin Warehouse Building forecast cost increased by $8.87M during the quarter. The Moccasin Dam & Reservoir Long Term Improvements $22.54M negative variance is a continuation from Q1 of FY24/25.
Subprograms
Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q3/FY2024-25
Forecast
Costs
($ Million)
(C)
Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E )
Water Infrastructure $64.29 $209.41 $209.41 - -
Water Conveyance (Water) $58.33 $196.49 $196.49 - -
Water Infrastructure
Project Development $5.96 $12.91 $12.91 - -
Power Infrastructure $138.09 $376.41 $392.06 ($15.65) ($1.00) Dams & Reservoir (Power) $0.35 $38.80 $38.80 - -
Powerhouse $55.30 $141.61 $157.24 ($15.63) -
Switchyard & Substations
(Power) $27.51 $57.12 $59.04 ($1.92) ($1.00)
Transmission Lines $49.87 $121.01 $119.11 $1.90 -
Power Infrastructure
Project Development $5.06 $17.87 $17.87 - -
Joint Infrastructure $233.08 $1,431.00 $1,462.41 ($31.41) ($8.87) Water Conveyance (Joint) $8.87 $331.17 $331.17 - -
Table 3. Cost Summary
4 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) Subprograms
Expenditures
To Date
($ Million)
(A)
Current
Approved
Budget
($ Million)
(B)
Q3/FY2024-25
Forecast
Costs
($ Million)
(C)
Cost
Variance
($ Million)
(D = B - C)
Cost
Variance
Over
Reporting
Period *
($ Million)
(E )
Buildings (Joint) $2.39 $115.02 $123.89 ($8.87) ($8.87) Dams & Reservoirs (Joint) $40.30 $598.86 $621.40 ($22.54) - Mountain Tunnel $162.57 $268.67 $268.67 - -
Powerhouse (Joint) $0.93 $13.47 $13.47 - -
Tunnels (Joint) $2.51 $30.14 $30.14 - -
Utilities (Joint) $4.44 $15.38 $15.38 - -
Joint Infrastructure Project
Development $11.06 $58.29 $58.29 - -
Overall Program Total $435.46 $2,016.81 $2,063.87 ($47.06) ($9.87) * Negative number is reflecting cost increases since last quarter, and positive number is reflecting cost reduction since last quarter.
4. PROGRAM SCHEDULE SUMMARY
Figure 4 and Table 4 compare the FY2025–2034 CIP Approved Schedule and the Current Forecast Schedule for the HCIP. As shown in Table 4, the HCIP approved and forecast schedule is December 2041.
Figure 4. Program Schedule Summary
5 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25) * “A” is used after a date to reference an actual date as opposed to a forecast or approved date.
5. BUDGET AND SCHEDULE TREND SUMMARY
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 al l Project Development accounts, as well as any projects that are either not-initiated, on-hold, in closeout, or completed.
During this Quarter (Q3 FY2024-25), the following major project milestones were achieved:
Two projects - the SJPL Valve Remote Control and Monitoring, and Cherry-Eleanor Pumps, were initiated, and the planning phase began.
The Moccasin Dam & Reservoir Long Term Improv ement project moved from planning phase to design phase.
Table 4. FY2025-2034 CIP Approved vs. Current Forecast Schedule Dates
Sub-Program
CIP
Approved
Project
Start
Actual
Start
CIP
Approved
Completion
Current
Forecast
Completion
Schedule
Variance
(Months)
Water Infrastructure 03/26/12 03/26/12 A* 06/30/34 06/30/34 - Power Infrastructure 05/29/12 05/29/12 A* 06/30/34 06/30/34 - Joint Infrastructure 10/03/11 10/03/11 A* 12/31/41 12/31/41 - Overall
HCIP Projects 10/03/11 10/03/11 A* 12/31/41 12/31/41 - 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 e f g h i j k l m n
Water Infrastructure
10035575 - SJPL Valve and Safe Entry Improvement
Phase 1A
Phase 1B
Phase 2A
Phase 2B/2C
Phase 3
$38.7 12/31/28 $38.7 12/31/28 TBD TBD TBD TBD TBD TBD TBD TBD $38.7 12/31/28 Power Infrastructure
$38.8 06/30/31 $38.8 06/30/31 TBD TBD TBD TBD TBD TBD TBD TBD $38.8 06/30/31 $41.1 12/01/27 $15.0 12/01/27 $40.7 12/01/27 $41.1 12/01/27 $41.1 12/01/27 TBD TBD $41.1 12/01/27 10014086 - Moccasin Powerhouse and GSU Rehabilitation
Phase 1
Phase 2
Phase 3
$83.7 06/30/29 $83.7 06/30/29 $83.7 06/30/29 TBD TBD TBD TBD TBD TBD $83.7 06/30/29 10014087 - Warnerville Substation Rehabilitation Project Phase A - DB-127R
Phase B - HH-1017
$19.7 01/31/30 $9.7 11/30/28 TBD TBD TBD TBD TBD TBD TBD TBD $19.7 01/31/30 Joint Infrastructure
$331.2 12/08/34 $13.2 12/31/24 TBD TBD TBD TBD TBD TBD TBD TBD $331.2 12/08/34 $88.7 05/31/29 $60.7 06/30/31 $88.7 05/31/29 $88.7 05/31/29 TBD TBD TBD TBD $88.7 05/31/29 11/30/25 03/31/26 11/30/26 07/30/27 Q3 - FY2024-25
01/31/29 Q3 - FY2024-25
03/13/26
Q3 - FY2024-25
08/17/26 07/19/27 04/20/28 Q3 - FY2024-25
03/02/29
10039680 - Moccasin Engineering and Records Building
4 FY2025-34 12/14/22 05/31/24 10/31/24 06/30/26 12/18/26 Q3 - FY2024-25 Table 5. Budget and Schedule Trend Summary
$34.2 $34.2 $37.4 $39.3$39.311/25/26 11/25/26 11/25/26 11/25/26 04/16/21
03/03/21 (Phase 1A),
05/28/21 (Phase 1B),
08/19/22 (Phase 2) &
12/30/21 (Phase 3)
Q3 - FY2024-25
11/26/25 Q3 - FY2024-25
Q3 - FY2024-2509/03/26 03/05/27
FY2025-34
$157.8 02/28/29$95.3 07/01/25 $98.9
Current StatusCER Awarded Construction
135% Design 95% Design
Q3 - FY2024-25
02/28/29 $157.8 02/28/29
03/08/22 (Phase 1A),
08/23/22 (Phase 1B),
02/27/24 (Phase 2A),
06/02/25 (Phase 2B/2C) &
01/09/24 (Phase 3)
$157.8 02/28/29 $95.3
Most Recent CIP
Approved Budget
03/31/23 03/13/24 02/28/25
03/13/28
Project Name
FY2025-34 09/18/20
10036809 - HHW - Moccasin Powerhouse Bypass Upgrade
$157.807/01/25
Project Initiation
10014079 - Cherry-Eleanor Pumps
FY2025-34 01/01/25 03/31/27 09/30/27 07/31/28
10041725 - SJPL Valve Remote Control and Monitoring
FY2025-34 11/14/24
FY2025-34 09/18/20
07/01/19
07/14/21 (Phase 1A),
10/29/21 (Phase 1B),
06/08/23 (Phase 2A),
05/21/24 (Phase 2B/2C) &
03/31/23 (Phase 3)
04/13/21 (Phase 1),
05/11/21 (Phase 2) &
01/16/26 (Phase 3)
03/06/31
$100.6
10014088 - Moccasin Penstock Rehabilitation
FY2025-34 02/03/14
FY2025-34 09/01/15 (Phase A),
01/01/21 (Phase B)
$27.2$37.4 11/25/26
12/31/28 $18.0 10/03/18
05/14/21
07/29/19 (Phase 1),
10/01/19 (Phase 2) &
12/29/23 (Phase 3)
09/09/20 (Phase 1),
05/11/22 (Phase 2) &
05/06/25 (Phase 3)
10039568 - Moccasin Switchyard Rehabilitation
FY2025-34 11/01/22
10014089 - Transmission Lines Clearance Mitigation FY2025-34 07/01/17 $116.2 12/31/2812/03/2712/03/2712/31/28
11/04/27
04/13/27
N/A (Phase A),
02/25/22 (Phase B)
N/A (Phase A),
N/A (Phase B)
N/A (Phase A),
03/20/24 (Phase B)
05/23/17 (Phase A),
11/18/25 (Phase B) Q3 - FY2024-25
11/08/27
$66.7 $100.6 $66.7 $66.7
12/16/24 02/02/26 06/30/26 09/30/25
7 All Costs are shown in million
Approved
Budget
Approved
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
Forecast
Cost
Forecast
Completion
ab c d e f g h i j k l m n
Water Infrastructure
Table 5. Budget and Schedule Trend Summary (continued) Current StatusCER Awarded Construction135% Design 95% DesignMost Recent CIP Approved Budget
Project Name
Project Initiation
$26.3 04/01/31 $26.3 04/01/31 TBD TBD TBD TBD TBD TBD TBD TBD $35.2 11/04/30 10032903 - O'Shaughnessy Dam Outlet Works Phase I2
Subproject A
Subproject B
Subproject C
Subproject D (Planning Only)
Subproject E (Planning Only)
$142.2 12/31/34 $83.2 07/01/27 $164.7 12/31/34 TBD TBD TBD TBD TBD TBD $164.7 12/31/34 $14.9 06/30/27 $11.9 07/01/27 $14.9 06/30/27 $14.9 06/30/27 TBD TBD TBD TBD $14.9 06/30/27 $100.1 12/31/35 $88.7 06/30/31 TBD TBD TBD TBD TBD TBD TBD TBD $100.1 12/31/35 10030759 - Eleanor Dam Rehabilitation
Subproject A
Subproject B
$268.7 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 $268.7 06/03/27 $13.5 07/01/32 $12.2 01/31/25 $13.5 07/01/32 TBD TBD TBD TBD TBD TBD $13.5 07/01/32 $30.1 12/31/30 $0.5 06/30/16 $15.0 12/30/26 $8.0 06/30/18 $30.1 12/31/30 TBD TBD $30.1 12/31/30 $15.4 02/20/28 $8.8 04/07/26 - - $8.8 04/07/26 $12.0 04/07/26 $15.4 02/20/28 $15.4 02/20/28 Footnotes:
1. This represents forecast project cost and project completion date at the time of award of construction contract (or award of CM/GC or Design-Build contracts/packages).
2. This represents that Subproject A will be doing Progressive Design Build during Construction. S ubproject B is in the process of finalizing the design. Subprojects D & E w ill not be doing CER.
3. This represents that the project started during the Design Phase.
4. This is a building project which follows a different set of milestones. Dates shown for CER, 35% Design, and 95% Design abo ve are for Conceptual Design, Schematic Design, and Contract Document.
5. Dates shown are for 50% Design and 100% Design.
TBD
06/27/25
06/28/30
02/28/26
09/30/33 Q3 - FY2024-25
Q3 - FY2024-25
$48.0 $48.0 $43.7
03/18/24 (Subproject A)
5,
N/A (Subproject B) &
12/23/22 (Subproject C)
06/13/23 (Subproject A),
08/13/24 (Subproject B) &
06/13/23 (Subproject C)
FY2025-34 03/01/21 06/28/24 11/22/24 05/16/25 01/20/26 Q3 - FY2024-25 FY2025-34 06/30/29 01/31/31 Q3 - FY2024-2507/01/23 06/30/26 12/31/27 $43.7 $17.2 $47.912/31/25 $43.709/16/25 09/16/25 09/16/25 06/30/26 FY2025-34 02/01/18
09/30/21 (Subproject A),
Complete (Subproject B),
09/30/22 (Subproject C),
01/12/24 (Subproject A)5,
N/A (Subproject B) &
11/16/22 (Subproject C)
01/18/28 Q3 - FY2024-25
10014115 - Cherry Dam Spillway - Short Term Improvements 06/30/2612/31/24
02/03/14 03/17/23 03/30/16 12/13/24 02/16/27 Q3 - FY2024-25 02/27/24
Q3 - FY2024-25
04/29/22
TBD TBD TBD $113.9 12/31/38
Q3 - FY2024-25- 03/23/23
10/13/20 Q3 - FY2024-25
12/04/29
06/01/20 09/04/24
06/30/27
2/25/25
06/30/28
FY2025-34 01/01/21 01/30/25 03/04/29 11/06/29 06/17/30 Q3 - FY2024-25 10039119 - Early Intake Dam – Long Term
$113.9 12/31/38 $113.9 12/31/38 12/31/38 $113.9 $113.9 12/31/38 FY2025-34
10014110 - Moccasin Wastewater Treatment Plant3
FY2025-34 01/03/22
10041727 - Moccasin Warehouse Building
FY2025-34 10/15/24 08/29/25 01/23/26 11/25/26
10014108 - Canyon Tunnel - Hetchy Adit Rehab & OSH Bridge 10014114 - Mountain Tunnel Improvement Project
FY2025-34 10/03/11 12/29/17 05/15/18 07/31/19
10037351 - Moccasin Dam & Reservoir Long Term Improvement FY2025-34 05/03/21 09/30/24 03/06/26 03/06/28
FY2025-34
10037077 - Moccasin Old Powerhouse Hazard Mitigation
8 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
6. PROJECT PERFORMANCE SUMMARY* All costs are shown in $1,000s Project Name Active
Phase
(a)
CIP
Approved
Budget
(b)
Current
Approved
Budget
(c)
Current
Forecast
Cost
(d)
Expenditures
to Date
(e)
Cost
Variance
(f=c-d)
% Cost
Changes
(g=f/c)
CIP
Completion
Date
(h)
Approved
Completion
Date
(i)
Forecast
Completion
Date
(j)
Schedule
Variance
(Days)
(k=i-j)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
Water Infrastructure
Water Conveyance (Water)
10035575 SJPL
Valve and Safe
Entry
Improvement
MP $157,752 $157,752 $157,752 $58,324 $0 0% 02/28/29 02/28/29 02/28/29 0 10041725 SJPL
Valve Remote
Control and
Monitoring
PL $38,743 $38,743 $38,743 $5 $0 0% 12/31/28 12/31/28 12/31/28 0 Power Infrastructure
Powerhouse
10036809 HHW -
Moccasin
Powerhouse
Bypass Upgrade
DS $41,056 $41,056 $41,056 $2,744 $0 0% 12/01/27 12/01/27 12/01/27 0 10014086
Moccasin
Powerhouse and
GSU
Rehabilitation
MP
$100,556 $100,556 $116,185 $52,561 ($15,629) (16%) 12/31/28 12/31/28 12/31/28 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 Multi-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY25-34.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY25-34, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 9 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 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)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10014089
Transmission
Lines Clearance
Mitigation
BA $83,681 $83,681 $83,681 $17,385 $0 0% 06/30/29 06/30/29 06/30/29 0 Switchyard & Substations (Power)
10014087
Warnerville
Substation
Rehabilitation
Project
CN $37,407 $37,407 $39,328 $27,036 ($1,921) (5%)
11/25/26 11/25/26 11/08/27 (348)
10039568
Moccasin
Switchyard
Rehabilitation
PL $19,708 $19,708 $19,708 $472 $0 0% 01/31/30 01/31/30 01/31/30 0 Dams & Reservoirs (Power)
10014079 Cherry-
Eleanor Pumps
PL $38,798 $38,798 $38,798 $346 $0 0% 06/30/31 06/30/31 06/30/31 0 Joint Infrastructure
Water Conveyance (Joint)
10014088
Moccasin
Penstock
Rehabilitation
PL $331,172 $331,172 $331,172 $8,873 $0 0% 12/08/34 12/08/34 12/08/34 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 Multi-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY25-34.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY25-34, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 10 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 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)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
Buildings (Joint)
10039680
Moccasin
Engineering and
Records Building
DS $88,734 $88,734 $88,734 $2,348 $0 0% 05/31/29 05/31/29 05/31/29 0 10041727
Moccasin
Warehouse
Building
PL
$26,290 $26,290 $35,157 $46 ($8,867) (34%) 04/01/31 04/01/31 11/04/30 148 Dams & Reservoirs (Joint)
10032903
O'Shaughnessy
Dam Outlet Works
Phase 1
MP $43,731 $43,731 $43,731 $29,407 $0 0%
12/31/25 12/31/25 06/30/26 (181)
10037351
Moccasin Dam &
Reservoir Long
Term
Improvement
DS
$142,188 $142,188 $164,728 $5,951 ($22,540) (16%) 12/31/34 12/31/34 12/31/34 0 10014115 Cherry
Dam Spillway -
Short Term
Improvements
DS $14,886 $14,886 $14,886 $3,110 $0 0% 06/30/27 06/30/27 06/30/27 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 Multi-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY25-34.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY25-34, plus any additional budget and schedule changes approved by the Commission as part of construction contract award.
(+++) Negative number reflects cost overrun (or schedule delay) and positive number reflects cost underrun (or ahead of schedule). Projects with a forecasted cost overrun greater than 10%, or forecasted delay of greater than 6 months or 10%, will be highlighted in grey. 11 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 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)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10030759 Eleanor
Dam
Rehabilitation
MP $113,874 $113,874 $113,874 $995 $0 0% 12/31/38 12/31/38 12/31/38 0 10039119 Early
Intake Dam - Long
Term
PL $100,072 $100,072 $100,072 $838 $0 0% 12/31/35 12/31/35 12/31/35 0 Mountain Tunnel
10014114
Mountain Tunnel
Improvement
Project
CN $268,669 $268,669 $268,669 $162,571 $0 0% 06/03/27 06/03/27 06/03/27 0 Powerhouse (Joint)
10037077
Moccasin Old
Powerhouse
Hazard Mitigation
PL $13,475 $13,475 $13,475 $932 $0 0% 07/01/32 07/01/32 07/01/32 0 Tunnels (Joint)
10014108 Canyon
Tunnel - Hetchy
Adit Rehab &
OSH Bridge
DS $30,138 $30,138 $30,138 $2,508 $0 0% 12/31/30 12/31/30 12/31/30 0 Utilities (Joint)
* 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 Multi-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY25-34.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY25-34, 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. 12 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 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)
(**) (+) (++) (+++) (+++) (+) (++) (+++)
10014110
Moccasin
Wastewater
Treatment Plant
CN $15,377 $15,377 $15,377 $4,440 $0 0% 02/20/28 02/20/28 02/20/28 0 * Does not include projects in closeout, completed, not initiated, on hold, deleted projects, and projects combined with other projects. ** Phase Status Legend
PL Planning DS Design
BA Bid & Award CN Construction MP Multi-Phase
Footnotes:
(+) CIP Approved Budget and Project Completion Date: The budget and schedule approved as part of 10-year CIP for FY25-34.
(++) Current Approved Budget and Schedule: The budget and schedule approved as part of 10- year CIP for FY25-34, 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. 13 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
7. PROJECT STATUS REPORT
10035575 - SJPL Valve and Safe Entry Improvement
Project Description: San Joaquin Pipeline
(SJPL) Nos. 1, 2, and 3 consist of three parallel transmission pipelines (completed in 1932, 1953, and 1968, respectively) that cross the San Joaquin Valley from the east of Foothill Tunnel at Oakdale Portal to the west of Coast Range Tunnel at Tesla Portal, a distance of approximately 48 miles. A fourth partial pipeline (SJPL 4 completed in 2012) consists of a 6.4-mile segment of pipe downstream of Oakdale and another 11-mile segment upstream of Tesla Portal. SJPLs deliver Tuolumne River water to the San Francisco Bay Area. They have been in service ranging from 11 to 91 years. SFPUC staff members and contractors need to enter the pipelines regularly to perform condition assessment, maintenance, and repair work. A recent hydraulic study shows that several of the existing valves in the SJPLs may be under-rated for the potential surge pressures that could be triggered from an unplanned closure of the valves at the downstream Tesla Ultraviolet Treatment Facility. For safety reasons, the SFPUC initiated this capital project to increase the pressure rating of the valves, provide safe pipeline isolations for personnel entry into the pipelines, and allow shutdown of any section of the SJPLs without a complete system shutdown.
Program: Water Infrastructure Project Status: Multi-Phases Environmental Status: Completed (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 157.75 M
$ 157.75 M
$ 58.32 M
Project Schedule:
Approved
Forecast
07/01/19
07/01/19
02/28/29
02/28/29
Project Percent Complete: 40.1%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 01/27/22 A 12/25/21 A 05/16/22 A 07/07/25
B 01/27/22 A 04/21/22 A 11/07/22 A 09/11/24 A
C 01/27/22 A 11/28/23 A 05/13/24 A 01/28/26
D 01/27/22 A 11/21/24 A 06/03/25 08/30/28
E 08/10/22 A 09/21/23 A 02/26/24 A 07/16/25
Progress and Status:
This project is divided into five (5) 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 2A – Crossover
Valve Improvement Pipelines 2&3 – HH-1012; (D) Phase
2B/2C –Removable Spool Piece and Valve Improvements at
Crossovers and P4J - HH-1016; and (E) Phase 3 - Tesla
Surge Tower – HH-1009. For Phase 1A, all valves passed
factory acceptance tests, were successfully installed during the Hetch Hetchy water system outage, and were awaiting final wet testing. The contractor is working on punchlist items.
For Phase 1B, the contract closeout process continued. The Phase 2A (HH-1012) valves passed factory tests,
were
installed by the contractor, and were awaiting final wet testing; punchlist items are being addressed. For Phases 2B&C (HH-1016) SFPUC received a responsive bid that was ten percent lower than the engineers estimate; SFPUC
Commission awarded the contract in March, and contract
Notice to Proceed is expected in early May. In Phase 3
(HH-1009) the contractor successfully installed the 60-inch diameter surge pipe and surge tower. Both the pipe and
tower have been tied into the water system and all valves have been installed. The Commission approved modest increases in cost and duration contingencies in HH-1012 and Placing the new Tesla Surge Tower
HH-1009.
Issues and Challenges:
None at this time.
14 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10041725 - SJPL Valve Remote Control and Monitoring
Project Description: Design,
procure, and construct new SJPL remote supervisory controls that would enable remote operation from Moccasin to remotely operate valve actuators. The project includes data telemetry improvements, Remote Terminal Unit (RTU) installation/replacement, trans-valley communication system upgrades, power system upgrades, security improvements, and access improvements.
Program: Water Infrastructure Project Status: Planning Environmental Status: Not Initiated (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 38.74 M
$ 38.74 M
$ 0.00 M
Project Schedule:
Approved
Forecast
10/01/24
11/14/24
12/31/28
12/31/28
Project Percent Complete: 0.7%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/30/26 02/01/27 10/01/27 06/30/28
Progress and Status:
The kickoff
meeting for the Needs Assessment Report was
held in March 2025. Currently, the consultant is reviewing as- built drawings, equipment records, engineering reports, and other relevant background materials. A site visit is scheduled in the next quarter.
Issues and Challenges:
None at this time.
Oakdale Portal along the SJPL
15 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10036809 - HHW - Moccasin Powerhouse Bypass Upgrade
Project Description: Provide
a reliable hydraulic bypass and energy dissipation system, conveying water around the turbines to the Moccasin Powerhouse Tailrace. 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.
Program: Power Infrastructure Project Status: Design Environmental Status: Active (Cat Ex) Project Cost:
Approved
Forecast
Actual
$ 41.06 M
$ 41.06 M
$ 2.74 M
Project Schedule:
Approved
Forecast
09/18/20
09/18/20
12/01/27
12/01/27
Project Percent Complete: 7.3%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 05/05/25 05/30/25 01/30/26 08/31/27
Progress and Status:
The project
team completed the review of the 95% design
package and is progressing toward finalizing the 100%
design. Utility investigations were completed in March 2025 and findings will be incorporated in the final design. To help meet critical construction windows, a phased approach is being used. A task order under a Job Order Contract is in development to take advantage of the last Mountain Tunnel 100-day shutdown to complete the powerhouse
tailrace
penetration ahead of the main contract.
Issues and Challenges:
None at this time.
Tie in Location of Bypass to Powerhouse Tailrace
16 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014086 - Moccasin Powerhouse and GSU Rehabilitation
Project Description: The
project is broken down into three components: 1) Generator Rehabilitation replace the entire generator and associated equipment, including new stator cores and coils, rotor poles, relays, and rotor rim; 2) GSU Replacement replace two of the three existing generator step-up transformers (GSUs), new foundations and oil containment, and relay upgrades; and 3) Power Plant Systems Upgrades replace the 480 V switchgear, 13.8 kV 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: Completed (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 100.56 M
$ 116.18 M
$ 52.56 M
Project Schedule:
Approved
Forecast
09/18/20
09/18/20
12/31/28
12/31/28
Project Percent Complete: 59.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 09/28/20 A 11/20/20 A 06/07/21 A 06/26/23 A
B 09/28/20 A 10/30/20 A 08/15/22 A 06/17/25
C 09/28/20 A 07/14/25 03/14/26 06/30/28
Progress and Status:
For Subproject
A - Moccasin Powerhouse Generator Step-Up
(GSU’s) Transformers, the project team completed close out tasks for contract HH-1003R. For Subproject B - Moccasin Powerhouse Generators Rewind (DB-121R2), the installation of the new fire suppression system was completed.
Unexpected pre-existing alignment issues of the shaft were discovered this quarter. The project team and the Contractor are working on different options to resolve the issues at Unit M1. For Subproject C - Moccasin Powerhouse Systems
Upgrade, the 65% submittal review comments from
stakeholders have been discussed in various workshops and are being incorporated into the 95% design.
Issues and Challenges:
The variance between the approved budget and forecasted cost is due to increased cost contingency of the DB-121R2 contract as well as forecasted cost increases in Subproject C –
Systems Upgrade, where higher costs are anticipated from scope
refinement, higher construction and procurement
costs,
and additional construction management and support
resource
requirements.
The
project team is anticipating additional increase to cost and
duration contingencies of DB-121R2 to address ongoing
issues
with
the
shaft
alignment
of
Generator
Unit
M1.
MPH
System Upgrades design schedule has been delayed
due
to the need to respond to a large number of 65% design
review
comments. The project team is reviewing the impact
on
the overall project schedule including planned project
outages and will report when impacts are better understood.
Reading Generator M1 Shaft Runout Measurements
17 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014089 - Transmission Lines Clearance Mitigation
Project Description: This
project will provide funding to implement mitigation measures to resolve clearance discrepancies. Mitigation options include but are not limited to new towers/tubular poles, new intervening poles, tower raises, ground lowering, and other structural improvements to the lattice towers.
Program: Power Infrastructure Project Status: Bid and Award Environmental Status: Active (MND) Project Cost:
Approved
Forecast
Actual
$ 83.68 M
$ 83.68 M
$ 17.39 M
Project Schedule:
Approved
Forecast
07/01/17
07/01/17
06/30/29
06/30/29
Project Percent Complete: 26.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/02/26 04/24/25 11/07/26 12/29/28
Progress and Status:
The project
team obtained Hetch Hetchy Water and Power
(HHWP) signatures on the Design Criteria Report and
Conceptual Engineering Report. The draft Project Description was accepted by the Environmental Management Group.
Work continues preparing contract documents for advertising the progressive design-build contract next quarter.
Issues and Challenges:
None at this time.
Transmission Lines 5 & 6 in Moccasin
18 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014087 - Warnerville Substation Rehabilitation Project Project Description: The
additional funding request is to cover the remaining work for Warnerville Substation Rehabilitation Project. Under Design Build Contract #DB-127R, installation of some 230 kV equipment was deleted from the contract but procured, including circuit breakers, switches, insulators, and current voltage transformers. 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.
Program: Power Infrastructure Project Status: Construction Environmental Status: Completed (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 37.41 M
$ 39.33 M
$ 27.04 M
Project Schedule:
Approved
Forecast
09/01/15
09/01/15
11/25/26
11/08/27
Project Percent Complete: 80.8%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 03/31/16 A 01/10/17 A 11/26/18 A 12/20/24 A
B 10/24/24 A 04/24/25 12/18/25 05/08/27
Progress and Status:
This project
is divided into 2 subprojects. For Subproject A
Warnerville Substation Rehabilitation Phase 1 – DB-127R, the project team closed out the contract. For Subproject B Warnerville Substation Rehabilitation Phase 2, the
advertisement of HH-1017 was delayed due to the new
information indicating that PG&E, rather than the SFPUC, will purchase the key electrical components for the South Yard, including the current transformer, potential transformer, and revenue meter. The project team is currently evaluating the schedule and cost impacts; and will revise the bid documents accordingly. The contract is now planned to be advertised next quarter.
Issues and Challenges:
As noted above, the project team is evaluating the impacts of the scope reduction in the South Yard and will provide further updates in the next quarter report. The increased cost and extended schedule duration are primarily driven by longer than expected high voltage equipment lead times and rising labor costs. Additionally, broader market conditions, including post-pandemic supply chain delays and labor shortages,
have increased costs across all work scopes.
Existing Warnerville Substation Rehabilitation, 230kV Switch to be Replaced
19 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014079 - Cherry-Eleanor Pumps
Project Description: Replace
and upgrade pumps in Cherry Pump Station with units that work with current operating strategies. The scope of work includes: 1) replacement of pumps, transformer, and pump motor starters; 2) installation of Programmable Logic controller (PLC), SCADA system, and fiber optics; and 3) improvement of the existing motor control center (MCC) building.
Program: Power Infrastructure Project Status: Planning Environmental Status: Not Initiated (TBD)
Project Cost:
Approved
Forecast
Actual
$ 38.80 M
$ 38.80 M
$ 0.35 M
Project Schedule:
Approved
Forecast
01/01/25
01/01/25
06/30/31
06/30/31
Project Percent Complete: 0.6%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 03/31/29 10/01/28 04/01/29 12/30/30
Progress and Status:
The kickoff
meeting for the Needs Assessment Report was
held in March 2025. Currently, the consultant is reviewing as- built drawings, equipment records, engineering reports, and other relevant background information. A site visit is
scheduled in the next quarter.
Issues and Challenges:
None at this time.
Cherry-Eleanor Pump Station at Cherry Reservoir
20 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10039568 - Moccasin Switchyard Rehabilitation
Project Description: Replace
115 kV disconnect switches, replace 115 kV bus configuration, replace 230 kV disconnect switches, change 230 kV bus configuration, replace 115 kV circuit breakers, add surge arresters, perform a fault study, perform a grounding study, improve switchyard grading, and replace fencing.
Program: Power Infrastructure Project Status: Planning Environmental Status: Not Initiated (TBD)
Project Cost:
Approved
Forecast
Actual
$ 19.71 M
$ 19.71 M
$ 0.47 M
Project Schedule:
Approved
Forecast
11/01/22
11/01/22
01/31/30
01/31/30
Project Percent Complete: 7.6%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 09/21/27 01/20/28 05/22/28 07/31/29
Progress and Status:
The project
team reviewed and provided comments on the
draft Needs Assessment Report (NAR). The consultant team is incorporating the comments into the NAR with a target to finalize next quarter.
Issues and Challenges:
None at this time.
Existing Moccasin Switchyard
21 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014088 - Moccasin Penstock Rehabilitation
Project Description: In
order to meet the established level of service, mitigate potential risks, and avoid potential consequences of failure, SFPUC is considering replacing the penstocks so that the life of the asset will be extended for a minimum 75 years. Based on a preliminary study, a combination of a drop shaft, a tunnel and above grade pipes appears to be a favorable alternative. SFPUC will continue the study before determining the most appropriate alternative solution. For capital planning purposes, SFPUC assumes the alternative will include: 1) a drop shaft; 2) a new tunnel penstock; and 3) two above-grade penstocks.
Program: Joint Infrastructure Project Status: Planning Environmental Status: Not Initiated (EIR)
Project Cost:
Approved
Forecast
Actual
$ 331.17 M
$ 331.17 M
$ 8.87 M
Project Schedule:
Approved
Forecast
02/03/14
02/03/14
12/08/34
12/08/34
Project Percent Complete: 3.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 09/04/29 09/06/30 05/07/31 05/07/34
Progress and Status:
The project
team held several internal workshops to discuss
the alternatives. The draft Alternatives Analysis Report is being revised to incorporate stakeholder’s comments and recent Right of Way developments, including revisiting the potential alternative for a deep shaft and tunnel within the current penstock alignment.
Issues and Challenges:
None at this time.
Moccasin Penstock System along the Steep Section
22 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10039680 - Moccasin Engineering and Records Building
Project Description: HHWP
Project operations and administration is located in Moccasin, California, with facilities including buildings, office trailers, warehouses, shops, laboratories, and sheds. Many existing facilities are deteriorating, do not meet current building codes, and are incurring increased maintenance costs. HHWP needs to invest in new facilities to meet all applicable codes and standards; reduce maintenance costs; increase employee interconnectivity and productivity; properly store all staff, materials, records, and equipment; and meet energy-efficiency standards. HHWP prepared a report titled "Moccasin Facilities Upgrade Project Alternatives Analysis and Evaluation Report Update". The report identified long- term needs for creating adequate office space for current staff in Moccasin. In addition, the report evaluated the needs for new, dedicated materials storage space, new records and archives space with offices, new space for servers, and parking space for staff. The Moccasin Engineering and Records Building project will address the need for permanent office space by constructing a new two-story building. Hetch Hetchy and Infrastructure staff are currently located in temporary trailers that have exceeded their useful life. The new building will provide office space for Hetch Hetchy Engineering, Records, Energy Services, Infrastructure, and ITS staff. The scope also includes a secure server room, parking lot, and archive/records storage. The budget and schedule for the project will be modified to provide permanent office space for both Hetch Hetchy and Infrastructure staff and to address escalation since the completion of the 2020 Alternatives Analysis Report estimate.
Program: Joint Infrastructure Project Status: Design Environmental Status: Not Initiated (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 88.73 M
$ 88.73 M
$ 2.35 M
Project Schedule:
Approved
Forecast
12/14/22
12/14/22
05/31/29
05/31/29
Project Percent Complete: 4.1%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 12/31/26 05/25/26 02/01/27 11/30/28
Progress and Status:
The project
team advanced work on the Design Development
Package with a target completion by the next quarter. The project team is preparing for the upcoming Civic Design Review phase 2 in the next quarter.
Issues and Challenges:
None at this time.
Engineering and Records Building 50% Design Development (DD) Rendering
23 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10041727 - Moccasin Warehouse Building
Project Description: The
Moccasin Old Powerhouse was constructed in 1926 and abandoned in the 1960s. The building has multiple structural and nonstructural issues, including cracks, spalling of structural concrete, water intrusion, broken windows, settlement, hazardous materials, and seismic deficiencies. The building is currently used for storage of large equipment and critical spares for the Hetch Hetchy Water and Power system. As a result of the multiple issues, it was determined to demolish the building. A new warehouse is therefore necessary for the storage of the large equipment and critical spares for the Hetch Hetchy Water and Power system that was previously stored in the Moccasin Old Powerhouse.
This project includes a construction of a new 9,000-square-foot warehouse within the Moccasin campus to store large equipment and critical spare components for the Hetch Hetchy Water and Power System. The building will include office space for warehouse staff including records retention for warehouse and materials documentation.
Program: Joint Infrastructure Project Status: Planning Environmental Status: Active (TBD) Project Cost:
Approved
Forecast
Actual
$ 26.29 M
$ 35.16 M
$ 0.05 M
Project Schedule:
Approved
Forecast
01/01/25
10/15/24
04/01/31
11/04/30
Project Percent Complete: 2.9%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 09/01/27 11/01/27 08/01/28 05/06/30
Progress and Status:
A work
order was issued for a metes and bounds survey, and
the design team is preparing the Project Development
package, which is expected to be completed next quarter.
Issues and Challenges:
The warehouse building size was requested by Hetch Hetchy Water and Power to be increased from 9,000 square feet to 15-20,000 square feet, resulting in a variance between
the
forecasted
cost and the approved budget. The project team
will
reassess the project scope, schedule, and budget after
receiving
a third-party cost estimate, expected by next
quarter.
Warehouse Misc. Storage in Old Moccasin Powerhouse
24 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10032903 - O'Shaughnessy Dam Outlet Works Phase 1
Project Description: O'Shaughnessy
Dam was completed in 1923 and raised in 1938. A condition assessment of the dam outlet works revealed the need for improvements to the existing outlet works, including gates and valves (1923 construction), to ensure safe and reliable operation. Based on engineering studies and prioritization of asset condition, needs, and risks, improvements to the existing outlet works will be implemented in two phases. Funding for this project will include work under Phase 1. Phase 2 of the O'Shaughnessy Dam Outlet Improvement Project begins in 2025. Work under Phase 1 will include: (1) replacement of two existing instream flow release valves; (2) improvements to access and drainage in the dam gallery and stairs; (3) installation of new bulkheads for the outlet intake; and (4) a planning phase and scoping for the slide gates and drum gates improvements.
Program: Joint Infrastructure Project Status: Multi-Phases Environmental Status: Completed (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 43.73 M
$ 43.73 M
$ 29.41 M
Project Schedule:
Approved
Forecast
02/01/18
02/01/18
12/31/25
06/30/26
Project Percent Complete: 69.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 12/02/22 A 01/13/23 A 05/24/24 A 07/01/25
B 12/02/22 A 05/03/24 A 11/12/24 A 11/06/25
C 12/02/22 A 03/13/23 A 08/28/23 A 05/24/25
Progress and Status:
Subproject
A (Bulkheads): The new dam inlet isolation
bulkheads were delivered, installed, and tested in all slots.
Subproject B (Drainage & Miscellaneous Dam
Improvements): Contract No. HH-1015 is underway following the issuance of the Notice-to-Proceed. The contractor has mobilized and begun demolition work. For Subproject C
(Instream Flow Release (IFR) Valve Replacement, HH-1011), the contractor continued to address the remaining punchlist items. The project team has reviewed the impact of delays related to the delivery of the gantry crane and the unexpected cavitation issues during the high flow release. An increase of contingency to the contract will be required to address the issues. Subproject D (Slide Gates): The project team
continued to address the comments on the Needs
Assessment Report. Subproject E (Drum Gates): The project team continued to address comments on the combined
Needs Assessment and Alternative Analysis Report.
Issues and Challenges:
The variance between the approved and forecast project
finish date is due to longer than expected duration to
coordinate the proposed construction water treatment and discharge requirements for the Drainage & Miscellaneous Improvement (Subproject B) contract. The substantial
completion date for Subproject C (Instream Flow Release Valve Replacement) is forecasted to be delayed due to the longer than expected procurement and delivery time of the gantry crane. Also, an unexpected cavitation issue was
discovered during the high flow release. Additional budget Subproject B Drainage & Misc Improvements - Site Preparation for Concrete Demolition within Tunnel
and time will be required for construction contract HH-1011 to resolve the issues. This, however, has no bearing on the overall project budget and completion date.
25 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10037351 - Moccasin Dam & Reservoir Long Term Improvement Project Description: A
heavy storm event in 2018 caused significant damage to the auxiliary spillway, upstream trash rack and diversion, and downstream area. Subsequent engineering studies concluded that improvements are needed to increase the spillway capacity to safely pass the updated design flood without overtopping the existing embankment dam.
This project is needed for dam safety. This project will construct a new concrete spillway with adequate flow capacity along the alignment of the existing auxiliary spillway and additional flood protection to the Moccasin project facilities.
Program: Joint Infrastructure Project Status: Design Environmental Status: Active (TBD) Project Cost:
Approved
Forecast
Actual
$ 142.19 M
$ 164.73 M
$ 5.95 M
Project Schedule:
Approved
Forecast
05/03/21
05/03/21
12/31/34
12/31/34
Project Percent Complete: 5.4%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/29/29 07/02/29 03/30/30 12/31/33
Progress and Status:
The 35%
design is currently underway and is expected to be
completed next quarter. This work builds on previous
progress, including the finalized Conceptual Engineering Report and the draft Basis of Design Report and Hydraulic Analysis developed last quarter. Geotechnical data review and analysis remain ongoing to support the design effort.
Issues and Challenges:
The variance between the forecast cost and the approved budget was primarily due to the recent escalation of concrete and steel costs. The project team continues to monitor cost trends and evaluate mitigation strategies as design
progresses.
Existing Auxiliary Spillway and Grizzly Gulch Canal
26 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014115 - Cherry Dam Spillway - Short Term Improvements Project Description: Cherry
Dam Spillway is a 334 foot-wide ogee-type concrete weir that discharges into an unlined adjacent channel. The spillway capacity is designed for 52,000 cfs. A spill of 1,500 cfs in 2010 resulted in significant erosion damage to the unlined spill channel, large-scale erosion along the western segment of Cherry Dam, and flooding of Cherry Power Tunnel Adit and a campground downstream. Engineering studies showed that remedial measures and erosion protection for the spill channel are needed to ensure that spill flows from Cherry Valley Dam spillway can be contained without erosion damage to the existing embankment dam and downstream area. Studies also found that long-term improvement to the spillway is needed to increase the hydraulic capacity of the spillway to safely pass the design flood. This project is a short-term interim solution until the long-term spillway improvements are implemented. This project will reestablish containment for the breached spill channel section from the 2010 spill and install armoring to protect the upper spill channel section against erosion from spillway releases of up to 2,000 cubic feet per second.
Program: Joint Infrastructure Project Status: Design Environmental Status: Active (MND) Project Cost:
Approved
Forecast
Actual
$ 14.89 M
$ 14.89 M
$ 3.11 M
Project Schedule:
Approved
Forecast
03/01/21
03/01/21
06/30/27
06/30/27
Project Percent Complete: 23.7%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 12/31/25 08/01/25 03/02/26 12/31/26
Progress and Status:
The draft 65% design package was delivered this quarter, and comments were returned by the SFPUC. The 95%
design package is scheduled for delivery next quarter, and the Job Order Contract (JOC) for tree removal work will begin when the 95% package is received. The construction contract package will be bid together with that of the Eleanor Dam – Interim Bridge Repair, a subproject to the Eleanor Dam
Rehabilitation.
Issues and Challenges:
None at this time.
Cherry Valley Dam Spillway 2,000 Cubic Feet per Second (CFS) Flow Model
27 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10030759 - Eleanor Dam Rehabilitation
Project Description: Mitigation
alternatives will include improvements to increase spill capacity to safely pass the design flood, installation of a liner on the upstream face of the dam, concrete repairs, valve replacement, and installation of concrete lining and riprap for foundation armoring, and replacement of the existing bridge.
Program: Joint Infrastructure Project Status: Multi-Phases Environmental Status: Active (TBD) Project Cost:
Approved
Forecast
Actual
$ 113.87 M
$ 113.87 M
$ 1.00 M
Project Schedule:
Approved
Forecast
06/01/20
06/01/20
12/31/38
12/31/38
Project Percent Complete: 2.5%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 06/30/25 08/02/25 04/01/26 12/31/26
B 12/31/32 01/01/33 10/01/33 12/31/37
Progress and Status:
This project is divided into 2 subprojects, (A) the Eleanor Dam Bridge Interim Repairs; and (B) the Eleanor Dam and Bridge Long-Term Rehabilitation. For subproject (A): The 35% Design Criteria Memo was delivered this quarter.
Comments on the Memo are being incorporated into the 50% package that is scheduled for delivery next quarter. The ‘mock-up’ test to pilot apply and test the overlay product on a portion of the bridge is scheduled to occur next quarter. For subproject (B): The project team reviewed the draft Needs Assessment Report from last quarter. A meeting will be held next quarter to present the findings, and a final Needs Assessment Report will be delivered after.
Issues and Challenges:
None at this time.
Lake Eleanor Stream Power Visual
28 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
10039119 - Early Intake Dam - Long Term
Project
Description: Remove the existing deteriorated dam and construct a new concrete diversion structure and conveyance system within the existing Raker Act boundary to divert flows from Cherry Creek and Tuolumne River upstream of Kirkwood Powerhouse into Mountain Tunnel for SFPUC customers during emergencies.
Program: Joint Infrastructure Project Status: Planning Environmental Status: Not Initiated (TBD)
Project Cost:
Approved
Forecast
Actual
$ 100.07 M
$ 100.07 M
$ 0.84 M
Project Schedule:
Approved
Forecast
07/01/23
07/01/23
12/31/35
12/31/35
Project Percent Complete: 2.2%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 06/28/30 07/01/30 04/01/31 12/31/34
Progress and Status:
Comments
from the draft Alternatives Analysis Report (AAR),
excluding scoring of the alternatives, were received and incorporated into a revised draft AAR, excluding scoring. The revised draft was delivered for internal review this quarter and the Water Enterprise staff will continue an internal review of the alternatives presented.
Issues and Challenges:
Further progress on this project will be paused to allow time for Water Enterprise review and alignment on next steps before additional work proceeds.
Early Intake Dam Spillway at Right Abutment
29 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014114 - Mountain Tunnel Improvement Project
Project Description: Constructed
between 1917 and 1925, Mountain Tunnel (MT) is a critical, nonredundant link in the Hetch Hetchy Regional Water System, conveying SFPUC water supply from Kirkwood Powerhouse to Priest Reservoir. Due to the tunnel's 90 years of operation, deferred maintenance, and construction deficiencies from the early 1900s, sections of the tunnel have deteriorated, some more extensively than others. The Mountain Tunnel Inspection and Repairs Project provided a tunnel inspection in 2017 to update the Condition Assessment conducted in 2008. Short-term repairs were also made in 2017 and 2018 to reduce the risk of failures in the concrete lining prior to implementation of the long-term project.
The 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 Regional Water System in reliable service for years to come. The budget and schedule are based on the Mountain Tunnel Improvements Project construction phase, which is anticipated to take place between 2021 and 2027. This is the water funded portion of the Mountain Tunnel projects.
For the Mountain Tunnel Improvements Project, the water portion will rehabilitate the inside of the tunnel and extend the siphon at South Fork, along with related safety improvements to the roadways that access the Mountain Tunnel.
Program: Joint Infrastructure Project Status: Construction Environmental Status: Completed Project Cost:
Approved
Forecast
Actual
$ 268.67 M
$ 268.67 M
$ 162.57 M
Project Schedule:
Approved
Forecast
10/03/11
10/03/11
06/03/27
06/03/27
Project Percent Complete: 65.9%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast
A 01/14/20 A 11/13/19 A 01/29/21 A 12/03/26
B 12/11/23 A 09/23/24 A 06/30/26
Progress and Status:
Subproject A
(HH-1000R) Mountain Tunnel Improvement
Contract: Work during this quarter consisted of construction work inside the tunnel and work at bottom of the Flow Control Facility Shaft as part of the fourth Mountain Tunnel
Shutdown. All of the remaining tunnel lining repair work was completed in this shutdown. Eleven miles of tunnel concrete lining repair has now been successfully repaired and
completed. About 50 percent of the contact grouting work has been completed as of the end of Outage No. 4. Two of the four 72-inch Double Disc Knife Gate Valves were successfully installed in the water pipes at the bottom of the Flow Control Facility Shaft. Commission approval was obtained, and the construction contract was modified with the removal of the South Fork Siphon Extension, South Fork Roadway
Improvements and Adit 5/6 and 8/9 Roadway Improvements
scope. Staff is evaluating completing this removed work using future contract(s). Subproject B (HH-1013) Moccasin Water System Filtration Plant: Due to a differing site condition construction was stopped while the redesign of the building support foundation took place. Construction restarted near the end of the reporting quarter.
Issues and Challenges:
None at this time.
Newly Installed 72 inch Double Disc Knife Gate Valves at Bottom of FCF Shaft
N/A
30 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
10037077 - Moccasin Old Powerhouse Hazard Mitigation
Project
Description: Design and install mitigation measures to prevent the building from collapsing and to prevent hazardous materials (such as lead-based paint and asbestos) from contaminating Moccasin Reservoir.
Program: Joint Infrastructure Project Status: Planning Environmental Status: Active (EIR) Project Cost:
Approved
Forecast
Actual
$ 13.47 M
$ 13.47 M
$ 0.93 M
Project Schedule:
Approved
Forecast
01/01/21
01/01/21
07/01/32
07/01/32
Project Percent Complete: 12.6%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 12/31/28 01/01/30 08/01/30 08/01/31
Progress and Status:
Conceptual
Engineering Report was finalized. The project
team continues to work on the environmental review to
develop the California Environmental Quality Act
Environmental Impact Report
Issues and Challenges:
None at this time.
Existing Moccasin Old Powerhouse
31 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
10014108 - Canyon Tunnel - Hetchy Adit Rehab & OSH Bridge Project
Description: The project is to install a new reinforced concrete plug downstream of the existing plug in Hetchy Adit and rehabilitate O'Shaughnessy Adit Access Bridge including sub-structure retrofit and super structure replacement.
Program: Joint Infrastructure Project Status: Design Environmental Status: Active (MND) Project Cost:
Approved
Forecast
Actual
$ 30.14 M
$ 30.14 M
$ 2.51 M
Project Schedule:
Approved
Forecast
02/03/14
02/03/14
12/31/30
12/31/30
Project Percent Complete: 19.0%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 08/31/26 09/01/26 05/01/27 05/01/30
Progress and Status:
Independent
cost estimate and technical review proposals
were received and reviewed. The project team will hold 95% design workshops and Technical Steering Committee
meeting in the next quarter.
Issues and Challenges:
None at this time.
Canyon Tunnel - Hetchy Adit Bulkhead
32 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) 10014110 - Moccasin Wastewater Treatment Plant
Project Description: This
project will 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: Construction Environmental Status: Completed (Cat Ex)
Project Cost:
Approved
Forecast
Actual
$ 15.38 M
$ 15.38 M
$ 4.44 M
Project Schedule:
Approved
Forecast
01/03/22
01/03/22
02/20/28
02/20/28
Project Percent Complete: 30.3%
Key Milestones Environmental
Approval
Bid Advertisement Construction NTP Construction Final
Completion
Current Forecast 02/22/23 A 10/12/23 A 06/03/24 A 12/29/26 Progress and Status:
Concrete for
the slab and influent tank was placed. Rebar for
future walls of the SBR was erected.
Issues and Challenges:
None at this time.
Installation of reinforcement steel for MWWTP walls
33 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
8. ON-GOING CONSTRUCTION*
Construction
Schedule Budget Variance
(Approved - Forecast) Percent
Contract
NTP Date
Approved
Construction
Final
Completion
Current
Forecasted
Construction
Final
Completion**
Approved
Contract
Cost
Current
Forecasted
Cost**
Schedule
(Cal Days) Cost
Complete
Water Infrastructure
10035575 - SJPL Valve & Safe Entry
Improvement - (Contract A, HH-1005)
05/16/22 02/01/25 07/07/25 $15,462,515 $15,462,515 (156) $0 95.4% 10035575 - SJPL Valve & Safe Entry
Improvement - (Contract B, HH-1006)
11/07/22 09/11/24 09/11/24 $11,465,716 $11,465,716 0 $0 99.7% 10035575 - SJPL Valve & Safe Entry
Improvement - (Contract C, HH-1012)
05/13/24 01/28/26 01/28/26 $7,791,640 $7,791,640 0 $0 44.8% 10035575 - SJPL Valve & Safe Entry
Improvement - (Contract E, HH-1009)
02/26/24 07/16/25 07/16/25 $11,349,168 $11,349,168 0 $0 66.0% Power Infrastructure
10014086 - Moccasin Powerhouse
Generator Rehab - (Contract B,
DB-121R2)
08/15/22 06/17/25 06/17/25 $29,501,417 $29,616,893 0 ($115,476) 91.9% Joint Infrastructure
10032903 - O'Shaughnessy Dam
Outlet Works Phase 1 - Instream Flow
Release (Contract C, HH-1011)
08/28/23 05/24/25 05/24/25 $6,135,393 $6,556,000 0 ($420,607) 85.8% 10032903 - O'Shaughnessy Dam
Outlet Works Phase 1 - Bulkheads
(Contract A, DB-135)
05/24/24 07/01/25 07/01/25 $6,780,000 $6,780,000 0 $0 91.6% 10032903 - O'Shaughnessy Dam
Outlet Works Phase 1 - Drainage &
Misc. Dam Improvements (Contract B,
HH-1015)
11/12/24 11/06/25 11/06/25 $5,285,955 $5,285,955 0 $0 7.0% 10014114 - Mountain Tunnel
Improvement - (HH-1000R)
01/29/21 12/03/26 12/03/26 $132,876,212 $139,035,145 0 ($6,158,933) 73.5% Note: * This table reflects Active Construction Contracts with an original contract amount greater than $1M. ** The Forecasted Cost includes all approved, pending, and potential change orders; and Forecast Final Completion includes all approved, pending, and potential change orders, and trends. 34 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25) Construction
Schedule Budget Variance
(Approved - Forecast) Percent
Contract
NTP Date
Approved
Construction
Final
Completion
Current
Forecasted
Construction
Final
Completion**
Approved
Contract
Cost
Current
Forecasted
Cost**
Schedule
(Cal Days) Cost
Complete
10014114 - Mountain Tunnel
Improvement - (HH-1013)
09/23/24 06/30/26 06/30/26 $4,595,729 $4,595,729 0 $0 8.3% 10014110 - Moccasin Wastewater
Treatment Plant - (HH-1010)
06/03/24 12/29/26 12/29/26 $7,526,337 $7,526,337 0 $0 20.6%
Approved Current Variance
Contract Cost Forecast Cost Cost Percent
Program Total for On-
Going Construction $238,770,081 $245,465,098 ($6,695,017) (2.8%) Note: * This table reflects Active Construction Contracts with an original contract amount greater than $1M. ** The Forecasted Cost includes all approved, pending, and potential change orders; and Forecast Final Completion includes all approved, pending, and potential change orders, and trends. 35 HCIP Quarterly Report Q3-FY2024-2025 (01/01/25 - 03/31/25)
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
Transmission Lines
10035721 - Transmission Lines 7/8 Upgrades 06/05/24 06/05/24 $27,146,308 $24,197,640 TOTAL $27,146,308 $24,197,640
36 HClP Quarterly Report Q3-FY2024-2025 (01/01/25 – 03/31/25)
10. COMPLETED PROJECTS
There are no completed projec
ts.
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38 APPENDICES
A PROJECT DESCRIPTIONS
B APPROVED PROJECT LEVEL BUDGETS/SCHEDULES
C LIST OF ACRONYMS
APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25) Q3-FY2024-25 (01/01/25 – 03/31/25)
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APPENDICES
APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
APPENDIX A. PROJECT DESCRIPTIONS
WATER INFRASTRUCTURE
Water Conveyance (Water)
10035575 SJPL Valve and Safe Entry Improvement
San Joaquin Pipeline (SJPL) Nos. 1, 2, and 3 consist of three parallel transmission pipelines (completed in 1932, 1953, and 1968, respectively) that cross the San Joaquin Valley from the east of Foothill Tunnel at Oakdale Portal to the west of Coast Range Tunnel at Tesla Portal, a distance of approximately 48 miles. A fourth partial pipeline (SJPL 4 completed in 2012) consists of a 6.4-mile segment of pipe downstream of Oakdale and another 11-mile segment upstream of Tesla Portal. SJPLs deliver Tuolumne River water to the San Francisco Bay Area. They have been in service ranging from 11 to 91 years. SFPUC staff members and contractors need to enter the pipelines regularly to perform condition assessment, maintenance, and repair work. A recent hydraulic study shows that several of the existing valves in the SJPLs may be under- rated for the potential surge pressures that could be triggered from an unplanned closure of the valves at the downstream Tesla Ultraviolet Treatment Facility. For safety reasons, the SFPUC initiated this capital project to increase the pressure rating of the valves, provide safe pipeline isolations for personnel entry into the pipelines, and allow shutdown of any section of the SJPLs without a complete system shutdown.
SJPL Valve Remote Control and Monitoring
Design, procure, and construct new SJPL remote supervisory controls that would enable remote operation from Moccasin to remotely operate valve actuators. The project includes data telemetry improvements, Remote Terminal Unit (RTU) installation/replacement, trans-valley communication system upgrades, power system upgrades, security improvements, and access improvements.
Water Infrastructure Project Development
10014072 WATER ONLY/PROJ DEV
The Project Development (PD) Account captures Program-level expenditures. The project provides programmatic support for Water funded capital projects. The following charges are 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 Hetch Hetchy staff performing program- level tasks, including capital plan development, budget management (including fund management and cost reallocations), and unifier and quarterly report generation tasks, where the costs should be distributed over all CIP Projects; 3) portal support for the existing SharePoint Portal (including document management and project dashboard reporting); 4) work outreach program; and 5) City Attorney charges for contract development.
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APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
APPENDIX A. PROJECT DESCRIPTIONS
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 Powerhouse Tailrace. 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
The project is broken down into three components: 1) Generator Rehabilitation – replace the entire generator and associated equipment, including new stator cores and coils, rotor poles, relays, and rotor rim; 2) GSU Replacement – replace two of the three existing generator step-up transformers (GSUs), new foundations and oil containment, and relay upgrades; and 3) Power Plant Systems Upgrades – replace the 480 V switchgear, 13.8 kV switchgear, motor control centers, main control boards, protective relays, cooling water piping, and improving oil containment systems.
Transmission Lines
10014089 Transmission Lines Clearance Mitigation
This project will provide funding to implement mitigation measures to resolve clearance discrepancies.
Mitigation options include but are not limited to new towers/tubular poles, new intervening poles, tower raises, ground lowering, and other structural improvements to the lattice towers. 10035721 Transmission Lines 7/8 Upgrades
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 115 kV conductors on Lines 7/8 from Warnerville to Standiford substations, resulting in increased capacity and resolving clearance detections.
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 230 kV equipment was deleted from the contract but procured, including circuit breakers, switches, insulators, and current voltage transformers. 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.
10039568 Moccasin Switchyard Rehabilitation
Replace 115 kV disconnect switches, replace 115 kV bus configuration, replace 230 kV disconnect switches, change 230 kV bus configuration, replace 115 kV circuit breakers, add surge arresters, perform a fault study, perform a grounding study, improve switchyard grading, and replace fencing.
Dams & Reservoirs (Power)
10014079 Cherry-Eleanor Pumps
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APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
Replace and upgrade pumps in Cherry Pump Station with units that work with current operating strategies.
The scope of work includes: 1) replacement of pumps, transformer, and pump motor starters; 2) installation of Programmable Logic controller (PLC), SCADA system, and fiber optics; and 3) improvement of the existing motor control center (MCC) building.
Power Infrastructure Project Development
10014092 POWER ONLY/PROJ DEVELP
The Project Development (PD) Account captures program-level expenditures. The project provides programmatic support for Power funded capital projects. The following charges are 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 Hetch Hetchy staff performing program- level tasks, including capital plan development, budget management (including fund management and cost reallocations), and unifier and quarterly report generation tasks, where the costs should be distributed over all CIP Projects; 3) portal support for the existing SharePoint Portal (including document management and project dashboard reporting); 4) work outreach program; and 5) City Attorney charges for contract development.
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APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
APPENDIX A. PROJECT DESCRIPTIONS
JOINT INFRASTRUCTURE
Water Conveyance (Joint)
10014088 Moccasin Penstock Rehabilitation
In order to meet the established level of service, mitigate potential risks, and avoid potential consequences of failure, SFPUC is considering replacing the penstocks so that the life of the asset will be extended for another 75 to 100 years. Based on a preliminary study, a combination of a drop shaft, a tunnel and above grade pipes appears to be a favorable alternative. SFPUC will continue the study before determining the most appropriate alternative solution. For capital planning purposes, SFPUC assumes the alternative will include the following major elements: • A drop shaft of about 850 feet deep, • A new tunnel penstock of about 3,100 feet, and • A two 72 in. above-grade penstocks with a total length of 3,000 feet Buildings (Joint)
10039680 Moccasin Engineering and Records Building
HHWP Project operations and administration is located in Moccasin, California, with facilities including buildings, office trailers, warehouses, shops, laboratories, and sheds. Many existing facilities are deteriorating, do not meet current building codes, and are incurring increased maintenance costs. HHWP needs to invest in new facilities to meet all applicable codes and standards; reduce maintenance costs; increase employee interconnectivity and productivity; properly store all staff, materials, records, and equipment; and meet energy-efficiency standards. HHWP prepared a report titled "Moccasin Facilities Upgrade Project – Alternatives Analysis and Evaluation Report Update". The report identified long-term needs for creating adequate office space for current staff in Moccasin. In addition, the report evaluated the needs for new, dedicated materials storage space, new records and archives space with offices, new space for servers, and parking space for staff. The Moccasin Engineering and Records Building project will address the need for permanent office space by constructing a new two-story building. Hetch Hetchy and Infrastructure staff are currently located in temporary trailers that have exceeded their useful life. The new building will provide office space for Hetch Hetchy Engineering, Records, Energy Services, Infrastructure, and ITS staff. The scope also includes a secure server room, parking lot, and archive/records storage. The budget and schedule for the project will be modified to provide permanent office space for both Hetch Hetchy and Infrastructure staff and to address escalation since the completion of the 2020 Alternatives Analysis Report estimate.
10041727 Moccasin Warehouse Building
The Moccasin Old Powerhouse was constructed in 1926 and abandoned in the 1960s. The building has multiple structural and nonstructural issues, including cracks, spalling of structural concrete, water intrusion, broken windows, settlement, hazardous materials, and seismic deficiencies. The building is currently used for storage of large equipment and critical spares for the Hetch Hetchy Water and Power system. As a result of the multiple issues, it was determined to demolish the building. A new warehouse is therefore necessary for the storage of the large equipment and critical spares for the Hetch Hetchy Water and Power system that was previously stored in the Moccasin Old Powerhouse. This project includes a construction of a new 9,000-square-foot warehouse within the Moccasin campus to store large equipment and critical spare components for the Hetch Hetchy Water and Power System. The building will include office space for warehouse staff including records retention for warehouse and materials documentation.
Dams & Reservoirs (Joint)
10032903
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APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
O'Shaughnessy Dam Outlet Works Phase 1
O'Shaughnessy Dam was completed in 1923 and raised in 1938. A condition assessment of the dam outlet works revealed the need for improvements to the existing outlet works, including gates and valves (1923 construction), to ensure safe and reliable operation. Based on engineering studies and prioritization of asset condition, needs, and risks, improvements to the existing outlet works will be implemented in two phases. Funding for this project will include work under Phase 1. Phase 2 of the O'Shaughnessy Dam Outlet Improvement Project begins in 2025. Work under Phase 1 will include: (1) replacement of two existing instream flow release valves; (2) improvements to access and drainage in the dam gallery and stairs; (3) installation of new bulkheads for the outlet intake; and (4) a planning phase and scoping for the slide gates and drum gates improvements.
10037351 Moccasin Dam & Reservoir Long Term Improvements A heavy storm event in 2018 caused significant damage to the auxiliary spillway, upstream trash rack and diversion, and downstream area. Subsequent engineering studies concluded that improvements are needed to increase the spillway capacity to safely pass the updated design flood without overtopping the existing embankment dam. This project is needed for dam safety. This project will construct a new concrete spillway with adequate flow capacity along the alignment of the existing auxiliary spillway and additional flood protection to the Moccasin project facilities. 10014115 Cherry Dam Spillway - Short Term Improvements
Cherry Dam Spillway is a 334 foot-wide ogee-type concrete weir that discharges into an unlined adjacent channel. The spillway capacity is designed for 52,000 cfs. A spill of 1,500 cfs in 2010 resulted in significant erosion damage to the unlined spill channel, large-scale erosion along the western segment of Cherry Dam, and flooding of Cherry Power Tunnel Adit and a campground downstream. Engineering studies showed that remedial measures and erosion protection for the spill channel are needed to ensure that spill flows from Cherry Valley Dam spillway can be contained without erosion damage to the existing embankment dam and downstream area. Studies also found that long-term improvement to the spillway is needed to increase the hydraulic capacity of the spillway to safely pass the design flood. This project is a short-term interim solution until the long-term spillway improvements are implemented. This project will reestablish containment for the breached spill channel section from the 2010 spill and install armoring to protect the upper spill channel section against erosion from spillway releases of up to 2,000 cubic feet per second.
10030759 Eleanor Dam Rehabilitation
Mitigation alternatives will include improvements to increase spill capacity to safely pass the design flood, installation of a liner on the upstream face of the dam, concrete repairs, valve replacement, and installation of concrete lining and riprap for foundation armoring, and replacement of the existing bridge. 10039119 Early Intake Dam - Long Term
Remove the existing deteriorated dam and construct a new concrete diversion structure and conveyance system within the existing Raker Act boundary to divert flows from Cherry Creek and Tuolumne River upstream of Kirkwood Powerhouse into Mountain Tunnel for SFPUC customers during emergencies.
O'Shaughnessy Dam Outlet Works Phase 2
O'Shaughnessy Dam was completed in 1923 and raised in 1938. A condition assessment of the dam outlet works revealed the need for improvements to the existing outlet works, including gates and valves (1923 construction), to ensure safe and reliable operation. Based on engineering studies and prioritization of asset condition, needs, and risks, improvements to the existing outlet works will be implemented in two A5
APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
phases. The O'Shaughnessy Dam Outlet Works Phase 1 Project is described under Project Number 10032903 and is currently in the design and construction phases. Phase 2 of the O'Shaughnessy Dam Outlet Improvement Project will begin in 2025 and will include replacement and/or refurbishment of eight discharge valves, rehabilitation of three drum gates, refurbishment of twelve slide gates, installation of a new diversion pipe isolation valve, and improvements for the diversion tunnel. The project will include:
(1) replacement of six 60-inch and one 72-inch discharge needle valves; (2) refurbishment of one 72-inch discharge butterfly valve; (3) rehabilitation of three drum gates; (4) refurbishment of twelve slide gates; (5) installation of a new diversion pipe isolation valve; and (6) improvements for the diversion tunnel.
Mountain Tunnel
10014114 Mountain Tunnel Improvement Project
Constructed between 1917 and 1925, Mountain Tunnel (MT) is a critical, nonredundant link in the Hetch Hetchy Regional Water System, conveying SFPUC water supply from Kirkwood Powerhouse to Priest Reservoir. Due to the tunnel's 90 years of operation, deferred maintenance, and construction deficiencies from the early 1900s, sections of the tunnel have deteriorated, some more extensively than others. The Mountain Tunnel Inspection and Repairs Project provided a tunnel inspection in 2017 to update the Condition Assessment conducted in 2008. Short-term repairs were also made in 2017 and 2018 to reduce the risk of failures in the concrete lining prior to implementation of the long-term project. The 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 Regional Water System in reliable service for years to come. The budget and schedule are based on the Mountain Tunnel Improvements Project construction phase, which is anticipated to take place between 2021 and 2027.
This is the water funded portion of the Mountain Tunnel projects. For the Mountain Tunnel Improvements Project, the water portion will rehabilitate the inside of the tunnel and extend the siphon at South Fork, along with related safety improvements to the roadways that access the Mountain Tunnel.
Powerhouse (Joint)
10037077 Moccasin Old Powerhouse Hazard Mitigation
Design and install mitigation measures to prevent the building from collapsing and to prevent hazardous materials (such as lead-based paint and asbestos) from contaminating Moccasin Reservoir.
Tunnels (Joint)
10014108 Canyon Tunnel - Hetchy Adit Rehab & OSH Bridge The project is to install a new reinforced concrete plug downstream of the existing plug in Hetchy Adit and rehabilitate O'Shaughnessy Adit Access Bridge including sub-structure retrofit and super structure replacement.
Utilities (Joint)
10014110 Moccasin Wastewater Treatment Plant
This project will 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
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APPENDICES Q3-FY2024-25 (01/01/25 – 03/31/25)
The Project Development (PD) Account captures program-level expenditures. The following charges are allocated to the joint funded 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 HHWP staff performing program-level tasks, including capital plan development, budget management (including fund management, and cost reallocations), and unifier and quarterly report generation tasks, where the costs should be distributed over all CIP projects; 3) portal support for the existing SharePoint portal (including document management and project dashboard reporting); 4) work outreach program; and 5) City Attorney contract development charges.
A7
Project Name Approved Budget Start Finish
Hetchy Capital Improvement Program $2,016,814,835.02 03-Oct-11 31-Dec-41 Hetch Hetchy Water Enterpise $2,016,814,835.02 03-Oct-11 31-Dec-41 Wa ter Infrastructure $209,409,421.01 26-Mar-12 30-Jun-34 Water Conveyance (Water) $196,494,822.00 01-Jul-19 28-Feb-29 10035575 SJPL Valve and Safe Entry Improvement $157,752,191.00 01-Jul-19 28-Feb-29 10041725 SJPL Valve Remote Control and Monitoring $38,742,631.00 01-Oct-24 31-Dec-28 Water Infrastructure Proje ct Development $12,914,599.00 26-Mar-12 30-Jun-34 CUH100PD HHW- Water Project Development $12,914,599.00 26-Mar-12 30-Jun-34 Power Infrastructure $376,407,179.00 29-May-12 30-Jun-34 Dams & Reservoirs (Power) $38,798,254.00 01-Jan-25 30-Jun-31 CUH10106 Cherry-Eleanor Pumps $38,798,254.00 01-Jan-25 30-Jun-31 Powerhouse $141,611,932.99 18-Sep-20 31-Dec-28
CUH10114 Moccasin Powerhouse and GSU Rehabilitation $100,556,003.00 18-Sep-20 31-Dec-28 10036809 HHW - Moccasin Powerhouse Bypass Upgrade $41,055,930.00 18-Sep-20 01-Dec-27 Switchyard & Substations (Power) $57,115,334.99 01-Sep-15 31-Jan-30 CUH10115 Warnerville Substation Rehabilitation Project $37,407,004.00 01-Sep-15 25-Nov-26 10039568 Moccasin Switchyard Rehabilitation $19,708,331.00 01-Nov-22 31-Jan-30 Transmission Lines $121,007,957.01 01-Jul-17 30-Jun-29
10035721 Transmission Lines 7/8 Upgrades $37,327,197.00 02-Dec-19 31-Jan-25 10014089 Transmission Lines Clearance Mi tigation $83,680,760.00 01-Jul-17 30-Jun-29 Power Infrastructure Project Development $17,873,700.00 29-May-12 30-Jun-34 CUH101PD HHW- Power Project Development $17,873,700.00 29-May-12 30-Jun-34 Joint Infrastructure $1,430,998,235.01 03-Oct-11 31-Dec-41 Water Conveyance (Joint) $331,171,945.00 03-Feb-14 08-Dec-34 CUH10116 Moccasin Penstock Rehabilitation $331,171,945.00 03-Feb-14 08-Dec-34 Buildings (Join) $115,023,904.00 14-Dec-22 01-Apr-31
10039680 Moccasin Engineering and Records Building $88,733,548.00 14-Dec-22 31-May-29 10041727 Moccasin Warehouse Building $26,290,356.00 01-Jan-25 01-Apr-31 Dams & Reservoirs (Joint) $598,857,830.01 01-Feb-18 31-Dec-41 10032903 O'Shaughnessy Dam Outlet Works Phase 1 $43,731,371.01 01-Feb-18 31-Dec-25 10030759 Eleanor Dam Rehabilitation $113,873,604.00 01-Jun-20 31-Dec-38 CUH102-N03 O'Shaughnessy Dam Outlet Works Phase 2 $184,106,942.00 01-Jul-25 31-Dec-41 10037351 Moccasin Dam & Reservoir Long T erm Improve $142,187,984.00 03-May-21 31-Dec-34 10014115 Cherry Dam Spillway - Short T erm Improvemen $14,885,874.00 01-Mar-21 30-Jun-27 10039119 Early Intake Dam - Long Term $100,072,055.00 01-Jul-23 31-Dec-35 Mountain Tunnel $268,668,950.00 03-Oct-11 03-Jun-27
CUH10221 Mountain Tunnel Improvement Project $268,668,950.00 03-Oct-11 03-Jun-27 Powerhouse (Joint) $13,474,515.00 01-Jan-21 01-Jul-32
10037077 Moccasin Old Powerhouse Hazard Mitigation $13,474,515.00 01-Jan-21 01-Jul-32 Tunnels (Joint) $30,138,401.00 03-Feb-14 31-Dec-30
CUH10215 Canyon Tunnel - Hetchy Adit Rehab & OSH Br $30,138,401.00 03-Feb-14 31-Dec-30 Utilities (Joint) $15,376,737.00 03-Jan-22 20-Feb-28
10014110 Moccasin Wastewater Treatment Plant $15,376,737.00 03-Jan-22 20-Feb-28 Joint Infrastructure Project Development $58,285,953.00 25-Jun-12 30-Jun-34 CUH102-PD HHW- Joint Project Development $58,285,953.00 25-Jun-12 30-Jun-34 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 FY2025 FY2026 FY 2027 FY2028 FY2029 FY2030 FY2031 FY2032 FY 2033 FY2034 FY 2035 APPENDIX B. Hetch Hetchy Capital Improvement Program Approved Project Level Budgets/Schedules Project Management
Planning
Environmental
Design
Right-of-W ay
Bid & Award
Construction Mgmt
Construction
Closeout
Program Mgmt
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APPENDICES Q3FY2024-2025 (01/01/25 - 03/31/25)
APPENDIX C. LIST OF ACRONYMS
Cat Ex Categorical Exemption
CDFW California Department of Fish and Wildlife
CEQA California Environmental Quality Act
CER Conceptual Engineering Report
CIP Capital Improvement Program
CM/GC Construction Manager/General Contractor
CFS Cubic Feet Per Second
DB Design-Build
EIR Environmental Impact Report
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
IFR Instream Flow Release
kV Kilovolts
MCC Motor Control Center
MND Mitigated Negative Declaration
MT Mountain Tunnel
NCN Non-Conformance Notice
NTP Notice to Proceed
OSH O'Shaughnessy Dam
PD Project Development
PG&E Pacific Gas and Electric
PLC Programmable Logic Controller
RFI Requests for Information
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
TBD To Be Determined
TSC Technical Steering Committee
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APPENDICES Q3-FY2024-2025 (01/01/25 – 03/31/25)
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