This project for Washoe County consists of two phases delivered under eight GMPs under a Construction Management-at-Risk delivery model. Phase 1A: Expansion of Huffaker Hills Reservoir. The effluent reservoir was raised 27 vertical feet, providing the Owner with an additional 2,000-acre feet of available effluent storage. Scope included grub and clear, mass excavation and handling / processing 150,000cubic yards of material and placing 1.4 million square feet of liner. The expanded reservoir stores treated effluent during the fall / winter months and distributes it to end users during the spring / summer months for irrigation purposes. Project was completed under budget and ahead of schedule.
Phase 1B: Facility Upgrades and Expansion. Currently under construction this project will expand the existing sewage treatment capacity from an average daily flow of 4.1 MGD to 6.0 MGD. Scope included upgrading / expanding existing headworks, demo abandoned headworks structures, construct new grit removal and blower building, refurbish existing blower building, yard piping, site electrical, construct new Bioreactors3&4 and upgrade existing Bioreactors 1&2, replace digester blowers, site dewatering, upgrades to Export, Field Creek, RAS/WAS and Effluent Pump Stations, and miscellaneous site improvements. Project is currently on schedule for completion in 2025.
“MWH is the CMAR for Washoe County’s Expansion Project at the South Truckee Meadows Water Reclamation Facility. They have been effective and professional in providing pre-construction services. Specifically, the County values their knowledge and recommendations to minimize risk associated with supply chain demands and cost escalation during these unprecedented times.”
This $110M Construction Manager-at-Risk (CMAR) project was awarded to MWH by the North Texas Municipal Water District. It consists of four phases and requires the coordination of three separate design teams (Jacobs, Carollo, and HDR).
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MWH is continuing to work uninterrupted on the Biosolids Digester Facilities Project (BDFP). The long-term, largescale project represents a significant overhaul of the Southeast Treatment Plant, San Francisco’s largest wastewater pollution treatment plant. BDFP is set to redefine the way wastewater is treated in the city, aiming to process up to 800 million gallons per day (MGD) and serving about 80% of the city’s population. Implementing state-of-the-art technologies and innovation, the project underscores MWH’s commitment to environmental sustainability and urban rejuvenation. The revamped plant will set new standards in waste management and pollution control, marking a major milestone in San Francisco’s environmental management history.
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MWH was awarded the 2023 ENR Intermountain Award of Merit in the Water and Environment category for the Logan Regional Wastewater Treatment Facility (WWTF). The award recognized the team’s hard work and dedication in completing the largest single capital improvement project for the City. Lance Ota, Project Manager, graciously accepted the award on behalf of the team.
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