Bioretention areas, or rain gardens, are stormwater management features adapted to provide on-site treatment of stormwater runoff. They are commonly located in parking lot islands or within small pockets of residential land uses. Surface runoff is directed into shallow, landscaped depressions.
These depressions are designed to incorporate many pollutant removal mechanisms that operate in forested ecosystems. During storms, runoff is generally diverted past the facility to the storm drain system. The remaining runoff filters through the mulch and prepared soil mix. The filtered runoff can be collected in a perforated underdrain and returned to the storm drain system.
It's important business. The team with Carolina Environmental Contracting considers all manner of elements when crafting Bioretention solutions.
Factors integrated into the plan include:
And then there's flood control, ground water recharge and pollutant removal, just to name a few.
Carolina Environmental Contracting (CEC) recently completed the design and construction of a BMP (Best Management Practices) site, built as a stormwater management solution to accommodate new construction at Moses Cone Hospital in Greensboro, NC.
The additional building footprint and nonporous paving area required the installation of a 3,000 square-foot pond that forces stormwater to filter through vegetation, a specialty soil mix, sand, and stone before entering the stormwater piping system.
Construction site BMPs utilize different methods and materials on construction sites before and during the construction phase of the project to control stormwater discharge or pollutants commonly found in stormwater. The newly installed bioretention pond will serve as a permanent BMP that will continue to filter water after construction completion.