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Region
- Appalachian Region3
- New JerseyRancocas Creek Watershed2
- ArizonaTucson Aqueduct1
- ColoradoLeadville Region1
- Death Valley Region (Calif. and Nev.)1
- FloridaMiami-Dade County1
- KentuckyJefferson County1
- Leadville Region (Colo.)1
- Naval Ordnance Station Louisville (Ky.)1
- NevadaNevada Test Site Region1
- New JerseyOcean County1
- TexasWebb County1