SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Folsom Area Stormwater Improvement Project
Paul Louie Contract Manager
Derek Adams Project Manager
11/03/20
PRO.0101 Contract Modification #5
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
BACKGROUND
2 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Background
3 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o Project will mitigate the SSIP LOS 5-year , 1.3
inches 3-hour storm
o State Abatement Order (R2-2021 -0021)
Background
4 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Background – Mission District Flood Risk
5 LEGEND
LOS Flood Risk
Very High
High
Medium
Low
Project Study Area
Channel Watershed
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
PROJECT STATUS
6 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Folsom Project Contracts
Erie St
(WW-719A) SOMA and Mission
District Sewer Replacement Contract
(WW-719B) Alameda Street Wet
Weather Tunnel Contract
(WW-719C) Harrison/Treat Box
Sewer Contract
(WW-719D) W. SOMA and N. Mission
District Sewer System Contract
Not to Scale
VICINITY MAP
LEGEND
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o Planning Complete
o Design Phase in progress
• WW-719A complete, NTP July 2023
• WW-719B approaching 95% design
• WW-719C approaching 65% design
• WW-719D not started
o Environmental clearance is complete
o Right-of-W ay acquisition ongoing
• Easement offers presented to owners
Project Status
8 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
CONTRACT MODIFICATION
9 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o Professional design services for the tunnel design
of
the Folsom Project, currently set to expire in
November 2023
Contract PRO.0101
10 Amendment No. Budget (Increase) Time (Extension)
Original Contract $5.7 million 18 months
1 $0 4 months
2 $4.0 million 14 months
3 $0 19 months
4 $0 6 months
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o 5th Amendment is budget and time extension
• Tunnel engineering support during construction
• Additional complex modeling scope required by
C
altrans
• Additional technical support on other construction
cont
racts within the project
o Request $7.5 million and 48 months
Contract PRO.0101 Modification Request
11 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o Amendment #2 authorized $4,000,000
o Actual spending (amounts in millions):
• $2.00 – f oundations complex modeling
• $0.54 – addi tional tunnel engineering
• $0.40 – U pstream geotechnical engineering
• $0.40 – ot her Upstream engineering support
• $0.35 – al ternatives engineering support
• $0.24 – ut ility locating and temporary power
• $0.18 – addi tional Caltrans-requested
borings
History
12 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean. o The $7.5 million is for:
• $4.05 – engi neering support for construction
• $1.82 – add’ l complex modeling at launch shaft
• $1.24 – add’ l complex foundation modeling
• $0.26 – publ ic relations
Anticipated Spending
13 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Highway 80
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Foundation
Modifications
Design
Launch Shaft
Analysis
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Foundation
Modifications
Tunnel
Alignment
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Caltrans
Foundation
Launch
Shaft
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Contract PRO.0101 (as amended)
18 Amendment No. Budget (Increase) Time (Extension)
Original Contract $5.7 million 18 months
1 $0 4 months
2 $4.0 million 14 months
3 $0 19 months
4 $0 6 months
5 $7.5 million 48 months
Total: $17.2 million 109 months
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
NEXT STEPS
19 SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
Next Steps
20 o Complete Right-of-Way Acquisition
o Negotiate purchase and sale agreements with (3)
private properties
o Obtain airspace lease with Caltrans
o Complete Caltrans Strategy Report for Foundation
Modification and Launch Shaft
o Submit Project Study Report – Project Report (PSR-PR) for Caltrans Approval
o Submit Plans, Specs, and Estimates for Caltrans
Approval
o Complete Tunnel (WW-719B) 95% Design
SEWER SYSTEM IMPROVEMENT PROGRAM | Grey. Green. Clean.
THANK YOU.
sfwater.org/ssip
[email protected]
sfwater.org
DEPARTMENT: Infrastructure
AGENDA NO.
7 MEETING DATE
June 13, 2023
Last updated: 02.01.2023
AGENDA ITEM
Public Utilities Commission
City and County of San Francisco
Calendar: Regular Calendar
Contract Manager: Paul Louie
Approve Modification No. 5 to Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project
Summary of Proposed
Commission Action:
Modify Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, with McMillen Jacobs Associates/Stantec, Joint Venture, to increase the Contract amount by $7,500,000 for a new total Contract amount of $17,200,000 and increase the Contract duration by four years for a new total Contract duration of nine years and one month due to increased Caltrans’ design and analysis requirements and to provide engineering support during construction, subject to Board of Supervisors approval under Charter Section 9.118.
Background: On September 25, 2018, by Resolution No. 18-0154, this Commission awarded Contract No. PRO.0101, Tunnel Engineering Services for the Folsom Area Stormwater Improvement Project, to McMillen Jacobs Associates/Stantec, Joint Venture ( MJA/S), to provide specialized tunnel engineering services to supplement San Francisco Public Utilities Commission (SFPUC) S taff for the proposed Project , with a not-to-exceed contract amount of $5,700,000 and a duration of one year and six months.
During the initial design process, the design team discovered previously unknown underground foundations that supported Caltrans’ US -101 freeway within the tunnel alignment. The result of the discovery wa s that: (1) the preferred engineering alternative selected and developed during the Planning Phase was
more complicated than originally
envisioned; (2) the foundations created a direct conflict with planned location of the tunnel; and ( 3) the complexity of resolving the conflict necessitated analysis of other alter natives and potentially the modification of the foundations. Because this conflict was discovered after the contract was awarded, the resolution of this conflict has required an expansion of the scope of services.
The Folsom Area Stormwater Improvement P roject will be implemented through four separate construction contracts. The Agenda Title: Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project Commission Meeting Date: June 13, 2023
professional services provided in Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project are primarily related to Contract WW- 719B, Alameda Street Wet Weather Conveyance Tunnel. There are also secondary services provided for the other three contracts, such as outreach support, design support and cost estimating.
In November 2021, the Folsom Area Stormwater Improvement Project became subject to Clean -Up and Abatement Order R2-2021-0021, issued by the Regional Water Quality Control Board. The Order requires the project to be completed by June 30, 2027.
Scope of Contract: The Contract work location is in the City and County of San Francisco’s Mission District and the South of Market.
The Contract work consists of:
• Manage and coordinate MJ/S’ design team;
• Implement the quality assurance and quality control plan; • Develop supplemental information and conduct various field investigations;
• Design an approximate 4,000 feet long, 12- feet diameter sewer tunnel. The design includes design reports, technical memoranda, plans, specifications, and cost estimates;
• Provide utilities and electrical power design support to City staff; • Support the City’s public outreach efforts; and
• Design Caltrans US-101 foundation modification.
Proposed Contract work:
• Provide soil-structure interaction (SSI) analysis for launch shaft; • Provide SSI analysis for sewer box design (WW-719C);
• Develop cost estimate and schedule for WW-719C;
• Provide bid phase support services (optional in original contract scope, but not funded); and
• Provide engineering support during construction (optional in original contract scope, but not funded).
Modifications to the
Contract:
Proposed Modification No. 5: Staff recommends a $7,500,000 Contract cost increase 7,500,000and a four -year Contract duration increase four years , resulting in a not- to-exceed Contract amount to $17,200,000 and a nine years and one month Contract duration , to allow MJA/S to address Caltrans comments and requirements for the US-101 foundation modification design, to perform analysis of the tunnel launch shaft ’s impact on Caltrans ’ US-80 freeway foundation structures, to support City design team on the upstream sewer box Agenda Title: Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project Commission Meeting Date: June 13, 2023
design, and to provide funding and contract duration for bid phase support services and engineering support during construction.
Modifications Nos. 1 through 4 : Modifications 1 through 4 cumulatively increased the Contract amount by $4,000,000 for a total Contract amount of $9,700,000 and increased the Contract duration by three years and seven months for a total Contract duration of five years and one month, to i nvestigate solutions and alternatives from unforeseen conflicts with
underground foundations supporting
Caltrans’ US 101 freeway within the tunnel alignment . Modification 3 accounted for delays in obtaining the right-of-way required for the proposed tunnel design. Modification 4 was to prepare more detailed budgetary information for the Contract amount increase proposed in Modification 5.
Funding and Costs: Funding Source: Sewer System Improvement Program 10038471, Folsom Area Stormwater Improvement Project.
Original Not-to-Exceed Amount: $5,700,000
Total Modifications to Date (Nos. 1 - 4): $4,000,000
Proposed Modification No. 5 Amount: $7,500,000
Total Not-To-Exceed Contract Amount: $17,200,000
Schedule: Original Duration: one year and six months
Modification Nos. 1 through 4 Duration: five years one month Proposed Modification No. 5 Duration: four years
Total Duration: nine years and one month
Environmental Review: On September 23, 2021, the San Francisco Planning Department determined the Project to be categorically exempt from environmental review under California Environmental Quality Act (CEQA) Guidelines section 15302, Class 2 (Replacement or Reconstruction) and CEQA Guidelines secti on 15303, Class 3 (New Construction or Conversion of Small Structures) under Case Number 2021- 002217ENV. The exemption can be found here:
https://sfpuc.sharefile.com/d-sd04ea7539dd74e55b6dd63cf36b964c6
If project design services under this contract lead to future changes in the project description, no work associated with those changes would occur until the proposed work is reviewed
and determined whether
environmental review under CEQA has already been conducted, or is required, and if required, the appropriate CEQA review is conducted.
Local Business
Enterprise Participation
The Contract Monitoring Division established a 8% Local Business Enterprise (LBE) subcontracting requirement for this contract. The Agenda Title: Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project Commission Meeting Date: June 13, 2023
and Non-Discrimination
In Contracting:
contractor committed to a 8.6% LBE participation with its bid submittal.
Attachment: 1. Contract Monitoring Division Memo
PUBLIC UTILITIES COMMISSION
City and County of San Francisco
RESOLUTION NO.
WHEREAS, The San Francisco Public Utilities Commission (SFPUC) requires an improved collection system capacity and increased flood resilience during wet weather months within the area around 17th and Folsom Streets in the City and County of San Francisco to comply with the California Regional Water Quality Control Board C lean-up and Abatement Order R2- 2021-0021; and
WHEREAS, On September 25, 2018, by Resolution No. 18-0154, th is Commission awarded Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, with an amount not-to-exceed $5,700,000, and with a duration of one year and six months, with McMillen Jacobs Associates/Stantec, Joint Venture (MJA/S); and WHEREAS, On May 19, 2020, the General Manager executed Modification No. 1 to Contract No. Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, increasing the contract duration by four months to account for unforeseen conditions due to discovery of underground foundations supporting Caltrans’ US-101 freeway within the tunnel alignment and to allow the design team to estimate the cost for additional alternatives analysis and the engineering work required to modify the Caltrans foundations, extending the contract term to one years and ten months, with no change to the C ontract amount; and
WHEREAS, On August 25, 2020, by Resolution No. 20-0188, the Commission approved Modification No. 2 to Contract No. Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, increasing the contract amount by $4,000,000 and extending the c ontract duration by one year two months , to provide design services to address unforeseen conditions (discovery of US-101 foundations within the tunnel alignment), to evaluate two design alternatives based on their technical merits and expected risks, and allow MJA/S to continue with the tunnel design for the proposed Project, increasing the total not-to-exceed contract amount to $9,700,000, and extending the contract term to three years; and WHEREAS, On August 10, 2021, by Resolution No. 21-0129, the Commission approved Modification No. 3 to Contract No. Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, extending the contract duration by one year and seven months to account for delays in obtaining the right-of-way contracts needed for the proposed Project, extending the contract term to four years and seven months, with no change in the contract amount; and
WHEREAS, On April 11, 2023, by Resolution No. 23-0069, the Commission approved Modification No. 4 to Contract No. Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, extending the contract duration by six months to allow time to prepare more detailed budgetary information for Caltrans -requested design requirements, extending the contract term to five years and one month with no change in the contract amount; and
WHEREAS, Staff recommends approval of proposed Modification No. 5 to increase the Contract amount by 7,500,000, and extend the Contract duration by four years, to address Caltrans’ additional design and analysis requirements for the US-101 foundation modification, to perform analysis on how the launch shaft affects US-80 foundation, to support City-s taff on the upstream sewer box design, and to provide funding and contract duration for engineering support during bid phase and construction, increasing the total not-t o-exceed contract amount to $17,200,000 and extending the c ontract term to nine years and one month; and WHEREAS, On September 23, 2021, the San Francisco Planning Department determined the
Project to be categorically exempt from environmental review under California Environmental Quality Act (CEQA) Guidelines section 15302, Class 2 (Replacement or Reconstruction) and CEQA Guidelines section 15303, Class 3 (New Construction or Conversion of Small Structures) under Case Number 2021-002217ENV ; and WHEREAS, If project design services under this contract lead to future changes in the project description, no work associated with those changes would occur until the proposed work is reviewed and determined whether environmental review under CEQA has already been conducted, or is required, and if required
, the appropriate CEQA review is conducted; and
WHEREAS, Funding for this contract is available from Project No. 10038471, Folsom Area Stormwater Improvement Project; now, therefore, be it RESOLVED, That this Commission hereby approves Modification No. 5 to Sewer System Improvement Program funded Contract No. Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project, with MJA/S, to increase the Contract amount by $7,500,0007,500,000 and to extend the Contract duration by four years, for a total not-to-exceed contract amount of $17,200,000, and a total duration of nine years and one month, subject to the Board of Supervisors approval under Charter Section 9.118.
I hereby certify that the foregoing resolution was adopted by the Public Utilities Commission at its meeting of June 13, 2023
Secretary, Public Utilities Commission
MEMORANDUM
Date: May 23, 2023
To: Derek Adams, Project Manager, SFPUC
Paul Louie, Project Engineer, SFPUC
From: Michelle Kassatly, Contract Compliance Officer, CMD
Subject: PRO.0101 PUC Tunnel Eng Srv Folsom SWIP
The SFPUC has requested a modification for the above referenced contract by increasing the contract amount by $7,500,000 for a total agreement amount of $17,200,000. Per the SFPUC, the scope of work for this modification is to perform Caltrans-requested detailed design analysis by computer modeling at two locations where the tunnel intersects elevated freeways. The modification will also provide funding for consultant’s engineering support after the design phase.
LBE Subconsulting Participation
The Micro/Small-LBE subconsulting participation requirement established for this contract is 8%. The Micro/Small-LBE subconsulting participation requirement applies to the entire contract including any amendments, change orders and amendments. The Micro/Small-LBE participation reflected on the Proposer’s, Delve Underground
1-Stantec JV (“Delve-Stantec”), CMD Form 2A at the time of proposal is as follows:
Subcontractor Scope of Work Status, Type and
Size
LBE Credited
Participation
Michael S. Thomas Civil Engineering LBE-OBE 0.30%
AGS, Inc. Geotechnical Engineering LBE-MBE 3.40%
AEW Engineering Inc. Environmental Advisory
Services LBE-MBE 4.90%
TOTAL 8.60%
As of March 31, 2023 Delve-Stantec has invoiced $7,627,835.75. The Micro/Small-LBE participation achieved by Delve-Stantec is as follows:
1 Previously known as McMillen Jacobs Associates, Inc
Subcontractor Scope of Work
Status,
Type and
Size
Credited LBE
Participation
LBE Participation To-Date
(NOT including
Amendment No. 1)
Michael S. Thomas Civil Engineering LBE-OBE 0.30% $9,632 0.10% AGS, Inc. Geotechnical
Engineering LBE-MBE 3.40% $485,206 6.40%
AEW Engineering
Inc.
Environmental Advisory
Services LBE-MBE 4.90% $331,049 4.30%
Agenda Title: Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project
Commission Meeting Date: June 13, 2023
Per Delve-Stantec, and as confirmed by the SFPUC, Michael S. Thomas “retired and is no longer in business; additional civil/utility work was transferred to AGS Inc.”
Moreover, per the SFPUC, “the base scope of work involved designing a 4,000 feet long, 12-foot diameter tunnel in the City’s Mission and Design Districts. The tunnel is required to pass under the existing US-101 and I-80 freeway bridge structures. When the consultants received NTP, two activities started: reviewing existing Caltrans’ as-built records and engaging Caltrans permitting staff. For US-101, the consultant realized the City had received incomplete as-built records from Caltrans. Once the complete records were found and reviewed, we realized the scope of work would need to expand significantly to include redesigning the foundations of the bridge structure. To meet Caltrans’ requirements, we have to perform specialized engineering modeling called, “soil-structure interaction (SSI)”. For I-80, the foundations did not conflict with the tunnel, but they were close enough to create concern within Caltrans, and therefore we were required to do a full analysis of the situation. As an added cost, Caltrans also wants the modeling to include the existing condition, during construction condition, and the final condition for both locations.
SSI modeling is a type of finite element modeling. A finite element is represented as a 3D cube. The bridge structure, foundation, and the soil surrounding the structure is modeled as millions of tiny cubes (like toy blocks). The stresses and strains on each face of each cube can be computed when an earthquake force and motion is applied. A high level of expertise is required to correctly create the model and interpret the results. Furthermore, a large number of hours is needed to create the model and run the simulations. Lastly, because of the high cost, only the most complicated projects utilize this tool, which results in a scarcity of practicing engineers. Therefore, because these factors, only large design firms have the ability to perform this specialized work.
After the proposed budget increase, the SSI-related work totals $5.3 million out of $17.2 million. About 31% of the total budget is allocated to the specialized work, which severely hampers the consultant’s ability to meet the original LBE goals. As previously stated, the goals were conceived before the need for SSI modeling work was known.”
Delve-Stantec has confirmed that it will remain committed to assigning work that may arise from future task orders to its original listed LBE subconsultants. Delve-Stantec informed the CMD that it anticipates meeting its 8.60% Micro/Small-LBE commitment, as follows:
TOTAL 8.60% $825,887 10.80%
Subcontractor Scope of Work Status, Type
and Size
Amount
Invoiced To-
Date
Projected LBE
Participation for entire
contract including this
Amendment No. 1
Michael S. Thomas Civil Engineering LBE-OBE 0.10% $17,670 0.10% AGS, Inc. Geotechnical
Engineering LBE-MBE 6.40% $910,866 5.30%
AEW Engineering Inc. Environmental Advisory
Services LBE-MBE 4.30% $545,225 3.20%
TOTAL
10.80% $1,473,761 8.60%
Agenda Title: Contract No. PRO.0101, Tunnel Engineering Services of the Folsom Area Stormwater Improvement Project
Commission Meeting Date: June 13, 2023
Going forward, SFPUC staff and Delve-Stantec will obtain CMD approval for each subconsultant addition and LBE substitution according to established procedures. Additionally, in order to ensure compliance with the LBE ordinance and requirements, the SFPUC and Delve-Stantec must notify CMD of any changes to the scope of work as well as any changes to information provided to CMD. Contingent on the conditions set forth above, CMD approves the subject modification.
Should you have any questions, please contact Michelle Kassatly at [email protected].