Currituck County Stormwater Public Presentation

Appendix B: Best ManagementPractices – Design Guidance forCommon BMP Elements• Key notes (continued):– Cisterns allowed to reduce runoff volume , development of awater budget required for empting tank prior to next storm– Permeable pavements allowed for peak runoff attenuationand volume reduction by lowering the percent impervious,engineered plan with soil scientist analysis requiredPermeable Pavement SystemCredit as % Managed GrassPermeable Concrete without Gravel Base 40%Permeable Concrete with at least 6” of Gravel Base 60%Flexible Pavements with at least 4” of Gravel Base 40%Flexible Pavements with at least 7” of Gravel Base 60%