Recommendations of the Expert Panel to Define Removal Rates for Street and Storm Drain Cleaning Practices

This expert panel report revises how sediment and nutrient removal credits are calculated for street sweeping and storm drain cleaning in the Chesapeake Bay watershed, based on updated research and modeling of pollutant buildup, removal efficiency, and street conditions. It establishes performance-based credit rates for different sweeping technologies and frequencies, introduces a separate credit for storm drain solids removal, and emphasizes verification and reporting requirements to improve consistency and water quality accountability.