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5 <br />Section 1011.011 Stormwater Management Requirements (cont’d). <br />Subparts 5 through 9 adopts the RCWD requirements by reference as amended. <br />This keeps our ordinance consistent with the RCWD. <br />1105.011 (5)Stormwater management plan modeling requirements. <br />•Adopts RCWD Rule C.4. This establishes the requirements for: <br />hydrograph method or computer program guidance used to analyze <br />stormwater runoff <br />Hydrologic Soil Group (HSG) Curve Numbers <br />Adopts NOAA Atlas 14 rainfall values for 2, 10 and 100 rain events and the <br />10-day snowmelt