County Commissioners of Carroll County, Maryland v. Maryland Department of the Environment
1. Can responsibility for nonpoint source runoff and third parties' stormwater discharges be imposed upon a local government under the Clean Water Act through an NPDES permit for discharges from its municipal separate storm sewer system?
2. Is a Clean Water Act permitting decision to classify a "Small" municipal separate storm sewer system as "Medium" and subject it to the Clean Water Act's heightened requirements for such systems without complying with the applicable designation process prescribed by 40 C.F.R. § 122.26(a) subject to judicial review?
Can responsibility for nonpoint source runoff and third parties' stormwater discharges be imposed upon a local government under the Clean Water Act through an NPDES permit for discharges from its municipal separate storm sewer system?