Green Stormwater Infrastructure (GSI) for roof and yard
Note: GSI isn't currently used to meet benchmarks, but can be used to meet permit, to filter, store, and redirect runoff on your property.
ECOSS' GSI Demonstration site at Equinox Studios in Georgetown (S. Seattle) uses Grattix boxes and Oyster Barrels on downspouts to manage heavy metals in runoff. The site has shown a 70-90% reduction in Zinc and other heavy metals flowing off their roof.
Funding is potentially available for stormwater solution installations (including green infrastructure)