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Needham DPW highlights stormwater, phosphorus targets as design constraint for downtown project
Summary
Department of Public Works staff told the Envision Needham Center working group that EPA phosphorus reduction requirements, drainage basin topology and recent flooding make new stormwater treatments a required element of any downtown redesign, and that design choices affect the opportunity to add surface best management practices.
Department of Public Works staff told the Envision Needham Center working group on Sept. 10 that federal and state stormwater mandates and local flood history will shape the design choices for the Great Plain Avenue corridor. Staff said the town must reduce phosphorus loading and that infiltration is the preferred treatment approach; they said the town has a target to remove roughly 2,100 pounds of phosphorus (as stated at the meeting) and that town projects must provide ways to capture and treat runoff as part of corridor work. Staff described the downtown area as the summit of three drainage…
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