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    Central Weber Wastewater Treatment Plant Upgrade

    This $135 million project includes engineering, design and construction management/general contractor services to design and construct a new 30-mgd activated-sludge treatment plant as an expansion to the existing facility, including all civil, structural, mechanical, electrical, instrumentation, commissioning and start up.  

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    City Financial Services for Wyoming City

    One of the oldest cities in Wyoming is faced with aging water and sewer infrastructure in need of repair. For example, during line replacement projects, workers found wooden pipes that were still in service. Needless to say, there is substantial cost and work required to upgrade the system to meet the rigors of Wyoming winters […]

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    City of Cape Coral Facility/Utility Expansion (FEP/UEP) Program

    In 2001, Cape Coral city officials prepared a comprehensive utility master plan to keep pace with increasing demands in one of the country’s fastest growing cities. A major part of the City’s program was a design/CM-at-Risk Utility Expansion Program (UEP) that added 720 miles of water, gravity sewer and irrigation pipelines, 240 miles of residential […]

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    Clark County Advanced Wastewater Treatment Membrane

    Beginning in 2002, this project focused on the demonstration of the suitability of membrane filtration and ozonation in a tertiary wastewater treatment application for water disinfection. MWH completed the design in 2008. The initial demonstration phase treated 30 mgd of secondary effluent on an annual average basis, with expandability to 150 mgd ultimate capacity. The […]

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    Consolidation Feasibility Study for Rocky Mountain Region Utility

    With their wastewater treatment plant operating at capacity and drinking water source of supply drying up, one Colorado utility was presented with a series of serious challenges and one important question: Should they forge ahead alone or attempt to enter into a regional solution with their neighbor? Going at it alone would require the utility, […]

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    Corona del Mar Water Treatment Plant

    The Goleta Water District (GWD) selected MWH to design and build upgrades and modifications to the 36-mgd Corona del Mar Water Treatment Plant. The project involved upgrades and modifications to an existing 35-year-old conventional surface water treatment plant. To achieve GWD objectives, MWH implemented innovative solutions including the use of hydraulic flocculation, rapid mixing, SuperScraper® […]

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    Developing Tools for Surface Water Nutrient Loading Attributable to Reclaimed Water

    In 2009, MWH, now part of Stantec, received a Tailored Collaboration grant from the WateReuse Research Foundation (WRRF), now WE&RF. In collaboration with several Florida utilities and management agencies, this funding supported the development of an empirical approach for distinguishing the contribution of water reuse irrigation toward nutrient impairment of surface waters in Florida. The […]

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    Disinfection By-Product (DBP) Control Program

    MWH was hired by the Antelope Valley – East Kern (AVEK) Water Agency in the Fall of 2003 to evaluate options for disinfection-by-product (DBP) control and design the improvements at their four surface water treatment plants (Quartz Hill – 90 mgd, Rosamond – 14 mgd, Eastside – 10 mgd, and Acton – 4 mgd). The […]

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    Easterly Tunnel Dewatering Pump Station (ETDPS)

    The EasterlyTunnel Dewatering Pump Station (ETDPS) project is one of the largest combined sewer overflow (CSO) pump station projects in the U.S. and is a critical component to addressing CSOs in Cleveland, Ohio.