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Bioretention Cell

NCDEQ Stormwater Design Manual C-2. Bioretention Cell Design Objective A Bioretention cell is an excavated area that is filled with a specialized soil media and plants, or grass/sod. It is designed to temporarily hold and filter stormwater. Bioretention cells are one of the most versatile SCMs: They can be installed in a variety of soil types from clay to sand and in a wide variety of sites. They are also one of the most effective SCMs for removing pollutants, because they use many different pollutant removal mechanisms, including infiltration, absorption, adsorption, evapotranspiration, microbial action, plant uptake, sedimentation, and filtration. Design Volume The design volume for a Bioretention cell is equivalent to the volume that is contained above the planting surface to the invert of the bypass mechanism for the design storm.

A bioretention cell is an excavated area that is filled with a specialized soil media and plants, or grass/sod. It is designed to temporarily hold and filter stormwater. ... No Mechanical Compaction MDC 9: Maintenance of Media MDC 10: Planting Plan MDC 11: Mulch MDC 12: Clean-out Pipes ... depth is based on the typical inundation tolerance of ...

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