Atlas project wins ASCE Project of the Year for underground water tank in Idaho

(UI) — Atlas Technical Consultants Inc. has been awarded the American Society of Civil Engineers (ASCE) Southern Idaho Section's 2023 Project of the Year for the Whistle Pig Tank development, recognized in the category for projects under $10 million.

“This recognition is a testament to the exceptional geotechnical capabilities of our Boise team,” said Atlas CEO Jacque Hinman. “We’re proud of their hard work and look forward to their continued innovation and success.”

The Whistle Pig Tank project addresses the critical issue of water supply, providing essential storage and system resiliency for South Ada County residents and businesses. Developed in collaboration with engineering firm Keller Associates for water utility company Veolia, the project includes a distinctive 2.65-million-gallon concrete tank, which is fully buried to blend with the natural surroundings.

Named after local groundhogs and ground squirrels, the tank was constructed within a steep hillside to minimize visibility and reduce impact on the existing Birds of Prey site. Innovative features include a series of pressure-reducing valves for filling and complex valving and controls for managing bypass provisions. The tank’s mixing system uses high-pressure water for mechanical mixing, eliminating the need for a pump. A small control structure on top of the tank allows for future re-chlorination.

The project also involved challenging pipeline installations, an overflow pond, and creative grading and access improvements. The Atlas team guided the tank's construction, performing specialized geotechnical investigations, calculating lateral earth pressures, and providing comprehensive construction recommendations.

This achievement builds on a decade-long partnership between Atlas and Keller Associates, relying on mutual trust and proven success from previous collaborations.

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