McCarthy Park – Whitemarsh Township, PA
To help control stormwater runoff and improve water quality, Whitemarsh Township retained T&M Associates to provide professional services for the construction of a large constructed wetland at ‘McCarthy Park’, an undeveloped township owned parcel. The project also included naturalization of an existing conventional stormwater detention basin, riparian corridor restoration adjacent to an intermittent stream, as well as, revegetation and reforestation of disturbed areas using native species. The main goals were to treat urban stormwater, improve water quality, add additional storage volume and restore riparian corridor buffers and natural habitats.
The firm’s role included preparation of grant application documents, which contributed to the Township’s award of a $618,485.00 PennVEST grant and a $100,000 H2O PA grant. T&M Associates also provided oversight throughout the project and maintained records to document compliance with the terms of the funding.
Our staff also performed geotechnical studies, hydraulic and hydrologic analysis, preparation of National Pollutant Discharge Elimination System (NPDES) and Montgomery County Conservation District (MCCD) permit application documents, landscape planning and design, preparation of construction plans and specifications, bid phase services and construction observation and administration.
Shortly after construction, the basin was tested by a 100-year storm event, and demonstrated its capability to reduce peak runoff flow rates and mitigate downstream flooding.