what is definition of stormwater first flush in california
Evaluation of First Flush Pollutant Loading and Implications for Water Resources and Urban Runoff Management Jeffrey Soller, Julie Stephenson, Kendra Olivieri, James Downing, and Adam W. Olivieri ABSTRACT A âfirst flushâ phenomenon of pollutants in stormwater occurs when rainfall after a dry period entrains a greater pollutant load from catchment surfaces than that of subsequent rainfall. The occurrence and magnitude of first flush events may influence the effective management of urban runoff pollution. To