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Memorial Field


Federal Way School District



Restoring the Gem of Federal Way

Project Details


Federal Way, WA, USA


11 acres


Civil Engineering

The Memorial Field progressive design-build project replaces an existing athletic facility that has served the community of Federal Way since 1971. The project includes two covered grandstand structures with a capacity for 4,000 spectators and buildings for concessions, restrooms, locker rooms, and ticketing. Athletic improvements include a synthetic turf field, running track, and facilities for field events such as long-jump, pole vault, and shotput. BNBuilders served as the general contractor and McGranahan Architects served as the architect.

This large site triggered a requirement to provide detention of stormwater, and options considered included an expensive detention vault under a parking area. Ethos Civil investigated and discovered an available space next to an existing pond and developed a solution to expand the existing pond in a way that provided capacity for the Memorial Field development. The existing flow control manhole was retrofitted with new equipment that allowed the expanded pond to meet current stormwater code requirements. Ethos Civil staff coordinated closely with the City of Federal Way to develop this solution. Retrofitting the existing detention pond proved to be the most economical option for managing stormwater. The simplified approach also reduced the impact on schedule and helped the contractor deliver the project on time.

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