AASHTO PH13-1

The purpose of this handbook is to assist transportation agencies in developing and/or implementing a stormwater managementprogram that satisfies the requirements of the Clean Water Act (CWA). For agencies that already have a functioningstormwater management program, this handbook provides useful tips and transportation specific references to assist programimplementation.Throughout this handbook, the terms "stormwater management program" and "stormwater management plan" (SWMP) areused. The term "stormwater management program" refers to the entire program implemented by a transportation agency tocomply with their National Pollutant Discharge Elimination System (NPDES) permit(s) for stormwater discharges. The term"SWMP" refers to a specific document that describes the framework for implementation of the stormwater management programfor the agency.