Here's the beginning:

National Pollution Discharge Elimination System (NPDES)

http://cfpub.epa.gov/npdes/

and here's the Stormwater specific program:

http://cfpub.epa.gov/npdes/home.cfm?program_id=6

All compliments of EPA.

_________________________
“Always remember the 6 P’s”
(Prior Preparation Prevents [censored] Poor Performance)