
WATER AND WASTEWATER
KBA positively impacts the health and safety of communities through our contribution to water and wastewater projects. KBA works with cities, counties, public utility districts, and private developers in the proper construction of water supply, treatment and storage facilities; and wastewater conveyance, collection, and treatment systems.
Redondo WWTP Biotower Maintenance
Client: Lakehaven Water & Sewer District
Location: Federal Way, Washington
2024 - Present
KBA is providing full-time inspection services for the rehabilitation of Biotower 2, which treats 2.8 MGD of primary effluent. The project includes asbestos abatement, removal of Galbestos metal siding, plastic media, and support grating, followed by structural steel repairs. The steel frame is sandblasted to remove lead-based paint and recoated with a high-solids epoxy. New FRP grating, plastic media, and metal wall panels are installed, along with the reinstallation of the FRP domed roof and odor control ductwork. KBA coordinates additional inspectors to meet the contractor’s overtime and weekend schedule, ensuring on-time completion under the DOE mandate.
Water Main Package 5
Client: Seattle Public Utilities
Location: Seattle, Washington
2024 - Present
KBA is providing construction management and inspection services for a $6.5 million project at seven different sites in Seattle. The work involves abandoning existing water mains in place and installing new ductile iron (DI) water main pipes, ranging from 4” to 20”, using the open-trench method. The project also includes installing valves, fire hydrants, and vaults, along with storm and sewer improvements. KBA is assisting SPU Water Operations with cutting, capping, and blocking existing water mains, as well as temporary and permanent water main connections and service connection transfers. The final phase involves surface restoration of roadways and landscaping, including ADA curb ramp improvements.
Longfellow Creek Natural Drainage Systems
Client: Seattle Public Utilities
Location: Seattle, Washington
2022 - 2023
KBA provided inspection services for a $7 million project aimed at improving stormwater drainage, pedestrian access, and the Longfellow Creek basin ecosystem. The project used Natural Drainage Systems in roadway shoulders to clean stormwater before it entered local waterways. The inspector monitored the installation of storm structures, pipes, concrete curbs, water main components, and the foundation for a pedestrian boardwalk, as well as roadway base placement and asphalt paving. He generated daily reports, documented activities, prepared pay estimates, coordinated material and utility testing, and communicated with residents and businesses to manage access and resolve construction issues.
Clean Water Facility - Heavy Civil GC/CM
Client: City of Oak Harbor
Location: Oak Harbor, Washington
2015 - 2021
KBA provided construction management and inspection services for this $150 million heavy civil GC/CM project that replaced two aging wastewater treatment facilities with a new clean water treatment facility that meets modern standards for reliability and performance. This project provided the construction of a new membrane bioreactor (MBR) facility to replace the City’s existing facilities (lagoon and rotating biological contactor), providing continued reliable wastewater service to the community of Oak Harbor while protecting and preserving the surrounding environment (Puget Sound, Oak Harbor, and Crescent Harbor).
Combined Sewer Overflow
Client: City of Port Angeles
Location: Port Angeles, Washington
2014 - 2017
KBA provided office engineering services for the $14.9 million Phase 2 CSO Project under the City’s CSO Reduction Program. The project increased flow capacity from downtown to the wastewater treatment plant to handle peak storm flows, expanded the treatment plant’s capacity, used an aboveground storage tank for excess flows, and upgraded the outfall system. Key work elements included building an above and below grade pump station for mechanical and electrical equipment, installing piping systems, new gravity sewers and storm drains, replacing sidewalks, curbs, and roads, and managing traffic control.
Morse Lake Pump Plant
Client: Seattle Public Utilities
Location: North Bend, Washington
2015
KBA provided construction management and inspection services for this $16.3 million project, located entirely within the secured Cedar River Municipal Watershed. The facility improves water transfer from Chester Morse Lake into the lower watershed, thereby providing the capability to meet water system demands and in-stream flows during dry conditions. KBA successfully met project challenges including completing all work while maintaining a fully operational water supply reservoir, with emphasis on worker safety and water quality protection.