Transcription of B. Stormwater Calculations - NC
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B. Stormwater Calculations - NC
NCDEQ Stormwater Design Manual _____ B. Stormwater Calculations 1 Revised: 3-15-2017 B. Stormwater Calculations Stormwater programs in North Carolina require high density projects to treat the design storm depth in a Stormwater control measure (SCM). To size the SCM, the designer must calculate the volume of runoff that will drain to it. Additional Calculations are needed to design the outlet structures of SCMs. The Stormwater rules do not reference any calculation methods.
permanent high water table, soils with a claypan or clay layer at or near the surface, and shallow soils over nearly impervious material. These soils have a very low rate of water transmission (0-0.05 in/hr). The textures of these soils are typically …
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