TO:
Honorable Mayor and Members of the City Council
THROUGH:
Talyn Mirzakhanian, Acting City Manager
FROM:
Erick Lee, Public Works Director
Katherine Doherty, City Engineer
Gilbert Gamboa, Principal Civil Engineer
SUBJECT:Title
Consideration of a Resolution Approving Amendment No. 4 to the Professional Services Agreement with Butier Engineering, Inc. for Additional Construction Management and Inspection Services in the Amount of $350,025 for the Peck Reservoir Replacement Project (Public Works Director Lee).
ADOPT RESOLUTION NO. 24-0114
Body
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RECOMMENDATION:
Staff recommends that the City Council approve Amendment No. 4 to the Professional Services Agreement with Butier Engineering, Inc. for additional construction management and inspection services in the amount of $350,025 for the Peck Reservoir Replacement Project.
FISCAL IMPLICATIONS:
Sufficient funds of $350,025 are available within the Water Fund for Amendment No. 4 to the Professional Services Agreement with Butier Engineering, Inc. for additional construction management and inspection services for the Peck Reservoir Replacement Project. A Project Budget and Expenditures Summary Report is attached.
BACKGROUND:
Peck Reservoir is situated at 1800 N. Peck Avenue, at the southeast corner of Peck Avenue and 19th Street. The replacement project included the removal of the degraded 60-year-old water storage reservoir, pumps, and ancillary facilities. The new facility included the construction of a new 8-million-gallon (MG) reservoir, pump station, operations, and electrical buildings, as well as a new groundwater filtration treatment system, related ancillary facilities, and site restoration. While the majority of the work occurred on the Peck Reservoir site, some work was required on adjacent streets, including the construction of new accessible sidewalks along 19th Street and Peck Avenue; new sewer and electrical connections on Peck Avenue; and new water and sewer pipeline trench work east on 18th Street, north on Herrin Avenue and east on 19th Street.
The City Council awarded a contract in August 2020 to Butier Engineering, Inc. (Butier) for construction management and inspection services for the 8MG Peck Reservoir Replacement Project. Key services provided by Butier on this project included:
• Full-time inspection of construction activities throughout the project.
• Review and oversight of the construction schedule, budget, and change management.
• Review of and response to contractor questions, requests for information, and resolution of issues in the field during construction.
• Coordination of matters among the contractor, subcontractors, and City staff.
• Coordination of public outreach throughout the construction period.
DISCUSSION:
Construction of the Peck Reservoir Replacement Project began in October 2020. In September 2023, a ribbon-cutting ceremony commemorated the commissioning of the new water storage reservoir and pump station. In the realm of municipal water systems, the strategic sequencing of infrastructure commissioning is crucial. By prioritizing the booster pump station, the new reservoir could be brought into service efficiently, ensuring a reliable water supply. This step-by-step approach not only streamlines the process but also allows for thorough testing and quality assurance before the well water filtration treatment facility begins operation, guaranteeing the highest standard of water quality for the community.
While the anticipated completion date for bringing the groundwater treatment plant online was the end of 2023, unforeseen delays have negatively impacted the startup and commissioning phase. Associated change order work in the startup and commissioning iterative process also accounts for the extended project timeline. The primary delays were due to the following items:
• Offsite groundwater well pipeline pressure loss and leak troubleshooting
• Installation of temporary bypass piping for testing and flushing purposes during startup and commissioning phase
• Localized spot corrosion remediation on the filtration tank interior surface coating (rust blooms)
• Troubleshooting the function and communication of onsite and offsite chlorine disinfection pumps with the City programmable logic controller (PLC)
• Remediation of chlorine disinfection pump and line leaks during testing
• Chlorine and ammonia analyzer troubleshooting
• Automation of well feed line pressure and flow, and integration with the overall City distribution system
• Backwash waste reclamation pump gearbox oil leak and installation of 3-inch backwash waste drain line
• Corrosion in treatment system Rotork valve actuators
• Treatment system flowmeter configuration and connections
• Schedule coordination between proprietary treatment vendor (Wigen Water Technologies, Minnesota), General Contractor (Pacific Hydrotech), and City staff
• Winter 2023/2024 weather delays
Completed phases for bringing the Peck Reservoir groundwater treatment plant online include:
1. Initial start-up check and testing of the proprietary treatment system hand and automation controls by the vendor (Wigen Water Technologies) to power up and confirm Wigen PLC communication with its system components
2. Test run of the blowers and air scourer manifold headers in two filtration vessels
3. Preliminary functional testing of the filtration tank system vendor controls with water
4. Loading of the green sand (anthracite) filtration media, flushing to waste, and activating the media with chlorine
5. Chlorine and ammonia disinfection injection pump installations (total of 6), pipe tubing, and injection point connections
6. Testing of the chlorine and ammonia disinfection dosing pumps with water
7. Proving out the disinfection injection system automation controls and communications
8. Proving out the overall automation with City SCADA system controls
9. Sampling port installations
10. Final functional testing of the filtration tank system vendor and City controls with groundwater supply
Ongoing and remaining work for bringing the Peck Reservoir groundwater treatment plant online includes:
• Testing and proving out of the backwash (filtration media cleaning) system with both well and potable water supplies
• Troubleshooting recent issues with the chlorine and ammonia disinfection injection systems
• Sampling, water quality testing, and procuring permit amendment from the State Division of Drinking Water before bringing the plan online
• Procurement of Industrial Wastewater Discharge Permit with the Los Angeles County Sanitation District for this new facility
The Peck Reservoir groundwater treatment plant is anticipated to be put into operation in October 2024.
All work performed by the contractor and associated vendors is independently inspected by Butier to ensure quality work and compliance with the project plans and specifications. Butier’s original contract awarded in 2020 was developed based on a contract duration of 18 months. Butier managed its resources accordingly to extend the construction management services through January 2023. Butier’s Amendment No. 1 budgeted for additional construction management, geotechnical, and testing services including special inspections required by the Division of State Architect for the new sod grass turf installation and lighting improvements completed at the school district Begg Sports Field per Project Contract Change Order No. 1. Change Order No. 1 negotiated the use of Begg Sports Field to stockpile and store the excavated soil from the Reservoir site in exchange for enhancements to the sports field. Amendment No. 2 was required to continue to provide field construction management, and inspection during the extended duration of the project. Amendment No. 3 extended the term of the original Agreement through December 2024.
Lastly, Amendment No. 4 provides construction oversight for the final stages of the reservoir site work, post-construction start-up, commissioning, and troubleshooting support services to functionally test and bring the new groundwater filtration treatment process online. These services in progress or completed over the last 12 months include:
• Construction management of civil site work including pavement, sidewalk, driveways, curb and gutter, asphalt street paving, landscaping, irrigation, and perimeter fencing
• Coordination of CCTV security camera installation with maintenance staff
• Synchronization, monitoring, and field support for the treatment system implementation phases and functional testing activities
• SCADA coordination with City operations staff, the City programming vendor, and contractor
• Investigating and troubleshooting startup and commissioning treatment system implementation problems and managing repairs
The additional services to be rendered under Amendment No. 4 will increase the contract amount by $350,025, for a maximum compensation of $3,662,092, and extend the contract term to June 30, 2025.
PUBLIC OUTREACH:
Public community meetings and a public outreach meeting with the school district were held in 2019. During the design and environmental approval phases, public meetings were also held with the City’s Planning Commission and Council. The project was also discussed at previous Capital Improvement Program budget meetings.
During the construction phase, public outreach included construction notices, public information meeting(s), media coordination, traffic alerts, and updates on the City website.
ENVIRONMENTAL REVIEW:
Pursuant to the California Environmental Quality Act (CEQA), a Mitigated Negative Declaration for the overall project was adopted on June 12, 2019. No further environmental review is necessary.
LEGAL REVIEW:
The City Attorney has approved the amendment as to form and has reviewed this report and determined that no additional legal analysis is necessary.
ATTACHMENTS:
1. Resolution No. 24-0114
2. Amendment No. 4 - Butier Engineering, Inc.
3. Agreement and Amendment Nos. 1 - 3 - Butier Engineering, Inc.
4. Budget and Expenditures Summary Report
5. Location Map