Where is the Regional Permit Program (RPP) applicable?
A4. The RPP is applicable in the Illinois counties of Cook, DuPage, Kane, Lake, McHenry and Will. Please note that projects in Will County that are located within the recharge zone for Lockport Prairie Nature Preserve, an area that supports the Federally Endangered Hines Emerald Dragonfly, will not be reviewed under the RPP. Projects within this area will be reviewed under individual permit procedures.