Rainwater recharge system offers multiple benefits for Pennsylvania development for medical research facilities and doctors’ offices.
The Floral Vale development in Lower Makefield, PA, is a building complex designed primarily for doctors’ offices and medical research facilities. Originally started in 1990, the project is now in its third phase of construction, and engineers from Tri-State Engineers & Land Surveyors Inc., in the Philadelphia area, needed to design a stormwater management system to retain runoff from the five-acre development area.
Having considered several solutions, they chose a CULTEC underground system based on its quality, performance characteristics and cost-effectiveness. According to Jodi Litus, P.E., a project manager at Tri-State Engineers, the Recharger® V8 met the storage requirements and featured the best vertical unit height for the project.
In addition to complying with state and regional stormwater management guidelines and local township ordinances, the system needed to be configured to accommodate the site’s varying permeability. One part of the site featured very high and another part very low infiltration rates, and the company was able to configure the system to avoid the extreme permeability areas while still adequately collecting runoff from the site.
More than 500 Recharger chambers were installed in three beds, providing 53,650 cubic feet of storage. Two weeks before installation, Tri-State Engineers needed to add extra volume to address a reduction in infiltration due to an increased factor of safety, as requested by the Lower Makefield Township Environmental Advisory Council. CULTEC’s technical staff modified the shop drawings, and East Coast Associates, a manufacturers’ representative from Roseland, NJ, had the additional chambers shipped and helped reconfigure the footprint on-site.