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American Street infiltration column drain construction is underway!

August 23, 2018

American Street infiltration column drain construction is underway!  The first of 38 such columns installed in GSI systems throughout this groundbreaking 2-mile streetscape project for the city of Philadelphia.

G&A technical staff is working closely with the driller, site contractor and other team members during the installation of the column drain systems.  Following the construction of each infiltration column G&A will conduct an inflow test to document performance and hydrogeologic conditions.  Along with many collaborators and stakeholders G&A has worked for several years to comprehensively investigate and design the GSI systems for American Street.  It is with genuine excitement and pride that we are able to roll up our sleeves and assist with the construction phase of the project.