Agency Department of Environment and Energy - DEE URL http://deq.ne.gov/NDEQProg.nsf/OnWeb/NPDES Additional URL http://deq.ne.gov/NDEQProg.nsf/RuleAndReg.xsp?databaseName=CN%3DDEQSER6/O%3DNDE⦠Description first URL is main NPDES page. second URL is the regulation covering MS4.