Combined Sewer Overflow (CSO) Construction Public Involvement

SERVICE AREA: Public Involvement


Triangle conducts public outreach for the construction of the North Henderson Combined Sewer Overflow (CSO) storage tank in Seattle’s Seward Park.

Project Description

Seattle Public Utilities (SPU) is constructing a Combined Sewer Overflow (CSO) underground storage tank to reduce the amount of untreated sewage that overflows into Lake Washington during heavy rains. This CSO tank is located in a popular park. SPU hired Triangle to reach out to the public to keep park visitors and neighbors informed about the construction project so the City could address their concerns. Triangle develops and advises on outreach materials and manages a 24/7 construction hotline. Triangle also hosted informational booths in Seward Park in advance of construction.

Date : 2009 - Ongoing

Client : Seattle Public Utilities

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