DATE: November 18, 2024
TO: President and Members of the Estero Municipal Improvement District (EMID) Board of Directors
VIA: Stefan Chatwin, District Manager
Marlene Subhashini, Assistant District Manager
FROM: Andrew Brozyna, Public Works Director/District Engineer Laura Galli, Engineering Manager
Francine Magno, Senior Civil Engineer
DEPARTMENT: Public Works
SUBJECT: WASTEWATER TREATMENT PLANT MASTER PLAN
IMPROVEMENTS PROJECT (CIP 455-652) – CLEAN WATER
PROGRAM – UPDATE FOR QUARTER 3 – JULY THROUGH
SEPTEMBER 2024
RECOMMENDATION
It is recommended that the Board of Directors of the Estero Municipal Improvement District (EMID) by minute order, receive and accept this Q3 progress update on the Wastewater Treatment Plant (WWTP) Master Plan Improvements Project (CIP 455- 652) – Clean Water Program (CWP). No further action is required by the EMID Board of Directors.
EXECUTIVE SUMMARY
This report summarizes the progress-to-date of the WWTP Master Plan Improvements Project (CIP 455-652) - Clean Water Program (CWP) for the City of San Mateo/EMID WWTP for the months of July 2024 through September 2024. The report includes summary information about construction and other project activities over the third quarter of the calendar year.
BACKGROUND
The CWP is a comprehensive Capital Improvement Program to rehabilitate the sanitary sewer collection system in the City of San Mateo and the treatment systems at the San Mateo WWTP. EMID has 24.12% ownership of the WWTP. In October 2014, the City of San Mateo retained Jacobs to serve as the Program Manager responsible for overseeing the management of the approximately $1 billion-dollar combined program, including the coordination of the design, construction, and start-up activities of this multi-year project.
The EMID Board of Directors has requested that staff provide updates on a regular basis. The WWTP Expansion Project is being performed using a Construction Manager at Risk (CMAR) delivery method, whereby the contractor is involved in the project early in the design process and the City benefits from the contractor providing constructability input and insight to inform the design development.
The Program Manager and Construction Manager is Jacobs. The WWTP Expansion Project Design Engineer is HDR. HDR is also providing Engineering Services During Construction (ESDC). The CMAR is Sundt Construction Inc. (Sundt).
ANALYSIS
Construction Package 1 – Site Preparation (Original Agreement with Sundt - $33,098,178) – Project is complete and project closeout activities are continuing.
Construction Package 2 – Foundation Piles (Amendment No. 1 to the Agreement with Sundt - $17,716,049) – Project is complete and closed out.
Construction Package 3 – WWTP Facilities (Amendment No. 2 to Sundt Agreement) is over 90% complete and is in its final stages.
Construction Package 3 Progress
Construction of the Primary Clarifiers is substantially complete. Installation of yard piping is complete, except for final connection of the force mains to the Headworks building which is scheduled for January 2025. Electrical equipment (gear including cabinets, breakers, switches, conduit and wiring) and mechanical equipment (piping with structural supports, motors, and pumps) continues to be installed in Areas 51 (Headworks), 53 (Bio-Actiflo), 55 (BNR), and 56 (MBR), with the major remaining items primarily in Areas 53, 55, and 56. Improvements to the following existing facilities continues: sodium hypochlorite day and bulk storage tanks and pumping systems; sodium bisulfate tanks and pumping systems; and chlorine contact basins. General sitewide work, such as site lighting, irrigation, landscaping, signage, and parking lot work, is still ongoing.
Administration Building and Maintenance Warehouse
Construction of the Administration Building and Maintenance Warehouse is substantially complete, and both buildings are now furnished. Leadership in Energy and Environmental Design (LEED) commissioning activities for the Administration Building are nearing completion. The project team is still working on final punch list items and is working with San Mateo’s Building and Fire Departments to obtain Temporary Occupancy for both buildings. The City/WWTP Operations staff is planning to occupy the building by the end of the year.
Plant Commissioning
Construction of the new treatment facilities is still anticipated to be complete in late November 2024. Clean water testing, process seeding (the introduction of microorganisms into the wastewater being treated), startup, and functional demonstration is still expected to occur in the December 2024 to February 2025 timeframe. The new liquid treatment processes are still anticipated to be in full service by March 2025.
Final Project Completion
The current final completion is projected to be October 2025 (as of the end of September 2024). The overall schedule has not changed since last quarter’s update.
Efforts by the contractor to mitigate prior schedule impacts from multiple change events are ongoing.
QUARTERLY CONSTRUCTION REPORT
Attachment #1 consists of selected portions of the Quarterly Progress Report for July through September 2024 published by the Program Management Team on October 21, 2024, summarizing the budget, schedule, and project activities that have occurred during the third quarter of 2024 and activities that are anticipated to occur in the fourth quarter of 2024 for the following projects:
•WWTP Expansion Project (comprised of GMP-1, GMP-2, and GMP-3), •Immediate Action Projects (IAPs)- supercritical major infrastructure projects, and •Annual Major Component Projects (AMCs)- ongoing annual maintenance projects.
Attachment #2 consists of a site plan showing the locations of the various process units being constructed as part of the projects.
Attachment #3 includes photographs of construction activities at the site over the past 3 months.
Attachment #4 includes a history of the Project financing.
More detailed information including additional photographs and architectural renderings of the completed WWTP Expansion Project as well as real time video of the active construction, are available on the Clean Water Program Project site:
https://cleanwaterprogramsanmateo.org/wwtp/.
CEQA
A Programmatic Environmental Impact Report (EIR) was prepared for the WWTP Master Plan Improvements Project (State Clearinghouse No. 2015032006).
FISCAL IMPACT
There is no fiscal impact associated with receiving this update.
As described in the Quarterly Report provided as Attachment #1, the total forecast Estimate at Completion (EAC) for the WWTP Expansion Project is approximately $572.24 million, which is an increase of approximately $60,000 (EMID share:
approximately $14,000) from the last quarterly update.
CITY COUNCIL VISION, MISSION, AND VALUE/PRIORITY AREA
Facilities and Infrastructure
ATTACHMENTS:
Attachment 1 – Portions of Quarterly Progress Report – 3rd Quarter Report, July 1, 2024 to September 30, 2024
Attachment 2 – Wastewater Treatment Plant Site Plan
Attachment 3 – Construction Photographs
Attachment 4 – Project Financing