Stormwater Retrofit Manual

The retrofit manual is being developed by the University of New Hampshire Stormwater Center in collaboration with state agencies, SNEP Network partners and EPA Region 1. The manual will guide communities and consultants through the fundamental approach for retrofit, sizing and performance characterization, give an introduction to using performance curves, offer design and sizing guidance, stormwater control measures (BMPs), every day counts retrofits, non-structural controls, and operations and maintenance.