Final CBP Approved Expert Panel Report on Stormwater Retrofits (Long Version)

This report (revised January 2015), prepared by the Chesapeake Stormwater Network, establishes a protocol for calculating pollutant removal rates for retrofit projects based on runoff reduction and treatment performance. It provides guidance and adjustor curves for a wide range of retrofit types, helping state and local agencies consistently quantify nutrient and sediment reductions while streamlining reporting and verification requirements.