The City of Philadelphia and Citymart have launched an open call for information about how to reduce uncertainties around developing green stormwater infrastructure (GSI), beginning with more effective assessments of subsurface conditions and utility locations.

The City welcomes ideas from industry experts, non-profits, and creative individuals on all types of innovative solutions that could help identify subsurface conditions or utility locations at potential stormwater management sites.

More information and submission guidelines are available at BigIdeasPHL.com. The deadline for submissions is July 14, 2016 at 5:00 PM EST.

Challenge contact: PWD-GSI.Innovation@phila.gov