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Balfour Beatty to build stormwater treatment system under California school

The underground infiltration gallery under Bassett High School will capture and treat stormwater to protect the region’s San Gabriel River watershed (Courtesy of  Los Angeles County Department of Public Works)
UK-headquartered Balfour Beatty has won a contract worth around $60m to build a stormwater capture system under a high school in La Puente, California.

As construction manager at-risk, it will build an underground infiltration gallery under Bassett High School to capture and treat stormwater to protect the region’s San Gabriel River watershed.

Under the direction of Los Angeles County Department of Public Works and the Bassett Unified School District, the company will install underground storage and storm drain systems, diversion structures, pump stations, and filtration vaults.

Overground, the contractor will create a small, public park when the project is finished in 2029.

Balfour Beatty’s is also building the county’s San Gabriel Valley Aquatic Center nearby in La Puente. It will have an Olympic-sized swimming pool as well as stormwater capture and conservation features.

“By reducing pollutants, reusing water through innovative irrigation, and elevating the landscaping, we’re proud to contribute to the long-term health of the San Gabriel River and Walnut Creek areas,” said Kelly Phariss, Balfour Beatty US Civils vice president of West operations.

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