Mountain House WRF - Project Profile

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Facility Facts Location: Mountain House Community Services District near Tracy, CAProject Type: Design-Build-OperateCapacity: 3.0 MGD expandable to 5.4 MGDFootprint: 1.0 acresProcess Design: Hybrid Sequencing Batch Reactor (SBR)

Mountain House Water Recycling FacilityDuring early planning phases for infrastructure needs of the Mountain House Community Services District, the developers had the foresight to prioritize designing and constructing a state-of-the-art water recycling system that incorporated their future economic and environmental goals. As a result, they contracted with PERC Water to design, build and operate the second phase of their water recycling facility, selecting a modified SBR that was one of the first chemical-free water reclamation facilities in the United States. The Design-Build-Operate approach allowed the project to be completed earlier than the 18 months initially planned, saving thousands of dollars in project management costs.

Project Profile

Innovative Water Recycling

PERC Water’s innovative ASP® design made it possible for the Mountain House Water Recycling Facility to provide six times the capacity of the former facility on one-tenth the land, dramatically reducing the original facility footprint. The existing 23-acre, 0.45 MGD aerated lagoon system was replaced with a 3.0 MGD hybrid-SBR water recycling facility on just over 2 acres of land and can support approximately 12,000 homes. Future phases will allow for an ultimate capacity of 5.4 MGD, supporting approximately 21,600 homes.

Key Design Features

In 2006, Global Water Intelligence awarded the Mountain House facility the Highly Commended Award in its annual “Water/Wastewater Project of the Year” awards, stating that “one day all wastewater treatment plants will be built with (PERC Water’s) degree of concern for the environment.” They called this facility “clever because it offers nearly six times the capacity of the original plant using just one tenth of the land.” It was commended as one of the first chemical-free treatment facilities in the United States.

Commitment to Community

• Builtundergroundwith operationsbuildings constructedabovethe tanks• 14,000squarefeetof operationsbuildings• Tankscontainmore than6,000cubicyardsof concreteandalmost1,000 tonsofrebar• Tankstructurecontainssix separatetankcells utilizingcommonwall construction

TheMountainHousefacilitywasalsoawardedwiththe“BestProject–DeveloperDesign-Build”awardpresentedbythe2008Design-BuildInstituteofAmerica(DBIA)WesternPacificRegionAwardscompetition.Thisfacilitywasselectedasresultofits“uniquedesignwherebyalltreatmentofwastewateroccursinbelowgroundtanksthatarecoveredwith14,000squarefeetofoperationsbuildingconstructedabovethetanks.”

Project Profile

959 South Coast Drive, Suite 315, Costa Mesa, CA 92626 office 714.352.7750 fax 714.352.7765 www.percwater.com