![]() Instead, the Manual uses a modified Rational Method which considers factors such as land use, quality of cover, soil type and time of concentration (Tc) to find discharges for areas less than 640 acres. The Manual does not use the traditional formula. The traditional formula for the Rational Method is Q=CIA where Q is the peak discharge, C is the runoff coefficient, I is the rainfall intensity, and A is the drainage area. Rational Method The Rational Method is used to estimate the peak discharge of stormwater runoff for drainage areas that are less than 640 acres. The Manual provides two methods for development of discharges-the Rational Method and the Unit Hydrograph Method. Codified Ordinances County Of Orange, California Noise Control (OCCO 4-6-1 through 4-6-16). County of Orange/Orange County Flood Control District 2009-10 Local Implementation Plan (LIP). County of Orange Codified Ordinance (Zoning Code - Title 7. Wastewater Pump Station Electrical Power and Control System. ![]() GENERAL REQUIREMENTS AND DESIGN STANDARDS. This MANUAL presents Orange County's minimum acceptable standards for the design. Roblox game card code generator free download.
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