While the challenges to an urban redevelopment plan can sometimes be daunting, partnering with an experienced stormwater treatment system manufacturer can result in profits to the developers, local economy and the environment.
In 2002, the Port of New York/New Jersey began dredging the harbor to accommodate container-carrying ships - which was expected to result in a doubling of import business during the next decade.
In anticipation of increased demand for warehouse and distribution space, Keystone Property Trust acquired Greenville Yards. The 26-acre brownfield is ideally located near the ports of Elizabeth and Newark, New Jersey, on the Hudson River. Garden State Engineering was hired to complete site design for two frozen food warehouses with 72 truck bays and new parking lots.
The project engineers faced many challenges, including the prohibition against removing the contaminated soil found on the site, the need for new drainage systems, and maximizing space available for parking.
In order to pipe water flow from Greenville Yards directly to the Hudson River, the New Jersey Department of Environment Protection (NJDEP) required treatment of site stormwater runoff. The stormwater treatment system had to be integrated into the site plan to maximize parking space.
The engineers considered biological and physical treatment systems but because of the site constraints, the project engineers decided that a vault-style filtration system would be the most appropriate for this project.
The StormFilter was chosen because it was the only manufactured stormwater filtration system that had received a Conditional Interim Certification from the NJDEP. [StormFilter has since achieved Final Certification as a standalone BMP].
The StormFilter is a flow-through filtration system. An underground concrete structure houses siphonactuated, rechargeable, filter cartridge that trap particulates and adsorb pollutants.
Six precast StormFilter vaults, three CatchBasin StormFilters, and four StormGate high-flow bypasses were installed. A total of 166 cartridges were filled with media to target oil, grease, suspended solids, soluble metals and organics.
Because the system was installed completely underground – using up no land area and allowing parking above – concerns about physical site constraints were mitigated.
“With 72 truck bays at the warehouses, the amount of truck traffic at the site will be considerable,” explained Nicholas Agnoli of Garden State Engineering.
The StormFilter system is the first proprietary BMP to receive Final Certification from the New Jersey Department of Environmental Protection as a standalone stormwater treatment system.
New Jersey’s rigorous approval process requires multiple levels of independent verification and peer review, including both field and laboratory testing.