20250819 14252200 1.0 TRUE MS4 Stormwater Area Feb2019 The MS4 program authorizes permitting for all discharges into the County owned storm sewers, storm drain inlets, open channels, and similar features. Permits include control measures that have a wasteload allocation in a total maximum daily load. Further County responsibilities of the MS4 program include: public outreach and education, public involvement, illicity disharge detection and elimination, construction and post-construction site runoff control, and pollution prevention. Jefferson County, Colorado