Project Details
Client: Chawanakee Unified School District / Darden Architects
Location: North Fork, California
Type: Water/Wastewater Infrastructure
Construction Cost: $5.5 million
Completion Date: 2008
Interesting Fact: A stand alone water supply, water treatment and wastewater treatment infrastructure was designed by Blair, Church & Flynn to support the new high school.
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Located less than forty five minutes from Yosemite National Park, the Minarets High School campus is a new 182-acre educational complex development nestled into the Sierra Nevada Mountains. A stand alone water supply, water treatment and wastewater treatment infrastructure was designed by Blair, Church & Flynn to support the new high school. The water supply system is comprised of six wells with SCADA controlled pumps. Three wells are designed to produce 285 gpm to provide water for student use, landscaping irrigation and fire demand. The other three wells produce 50 gpm and are standby wells for future use. The wells are networked together with 13,000 feet of 4” – 6” pipelines. The alignment of the supply pipelines was strategically placed throughout the site to avoid massive rock outcroppings, as well as environmentally sensitive vernal pools, valley oaks, wetlands and elderberry bushes.
The raw water is delivered to a filter system that, using chlorine, removes iron and manganese from the supply. The treated water is kept in two 240,000 gallon welded-steel storage tanks before being used for domestic water, landscape irrigation, and fire supply. The domestic supply pumps are four variable speed driven pumps that produce a total of 500 gpm for domestic water and landscape irrigation. A 2,000 gpm constant speed pump is available for fire supply water.
Wastewater produced by the campus is lifted by a 60 gpm lift station into a 20,000 gpd membrane bioreactor sewage treatment plant. The treatment plant also consists of an equalization basin, UV disinfection, 10 acre-ft storage pond, and 40 gpm effluent pump. The treated wastewater is used to irrigate an eight acre soccer field via a subterranean drip irrigation system.