State-developed PGPs will require EPA approval, but they will likely differ significantly from one state to the next. As a result, it's important for aerial applicators to learn about the NPDES permit policies for each state in which their application work will take place.
The state agencies responsible for water permitting and web links to information about those states’ draft permits that are now available are as follows (NAAA will continue to update this list as additional state draft permits become available):