Retention, Detention, and Overland Flow for Pollutant Removal from Highway Stormwater Runoff: Interim Guidelines for Management Measures

摘要

The report provides interim guidelines for the design of management measures for the removal of pollutants from highway stormwater runoff. Three general types of management measures have been determined through previous FHWA studies to be effective in treating highway runoff: vegetative controls (overland flow and grassed channels); detention basins (wet detention basins and wetlands); and retention measures (retention basins, trenches and wells). These interim design guidelines have been developed, based on experience of the project team and by a thorough review of available literature. Field and laboratory studies are currently underway to verify the design procedures and assumptions presented in the report.