Transcription of Table 4.1 New York Stormwater Sizing Criteria1
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Table 4.1 New York Stormwater Sizing Criteria1
New York State Stormwater management Design Manual Chapter 4: Unified Stormwater Sizing Criteria Section Introduction Chapter 4: Unified Stormwater Sizing Criteria Table New York Stormwater Sizing Criteria1 . 90% Rule: WQv(acre-feet) = [(P)(Rv)(A)] /12. Water Quality Volume Rv = + (I). (WQV) Water Qualility I = Impervious Cover (Percent). P(inch) = 90% Rainfall Event Number (See Figure )2. A = site area in acres RRv (acre-feet) = Reduction of the total WQv by application of runoff reduction techniques and standard SMPs with RRv capacity to replicate pre- Runoff Reduction development hydrology.
courses, and cemeteries. ... If TR-55 method is used for the design of stormwater management practices for storms greater than 90%, detention time may be calculated using either a center of ... and good operation and maintenance. 4-5 . New York State Stormwater Management Design Manual . Chapter 4: Unified Stormwater Sizing Criteria .
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