1. Stormwater Best Management Practices

2. MS4 Permit Overview
Municipal Separate Storm Sewer System (MS4) permit is required for medium to large cities and other large land mass areas
UMTC has campus-wide stormwater permit to control sources of pollution that could get into stormwater and then to Mississippi River
Pollutants from activities
Dirt/Sediment
Oils
Salts
Organic Matter
Storm sewer versus sanitary sewer

4. What is stormwater?
Stormwater is runoff from rain, snow/snowmelt, surface runoff and drainage.
Rainfall can pick up litter, organic materials, sediment and chemicals before flowing back to lakes and streams.
Water can cause damage to land under construction, or land that is improperly vegetated by washing away soil and sediments.
Sediments, organics and litter contribute to impairment of receiving waters.

5. Illicit Discharges
Permit requires control of activities that could impact stormwater in 6 major areas “control” areas
Ranges from construction sites, control of illicit discharges, and education of the “public”
We develop a plan for how to implement the 6 control areas
Required to follow plan, provide and document training
“Illicit Discharge” is discharge to storm sewer that is not entirely composed of stormwater
Permitted exceptions
Firefighting exceptions
Illicit discharges are not allowed, must be tracked and corrected.

6. Equipment Wash Area Rules
Clean equipment in designated areas only
Pre-wash equipment using dry, mechanical methods
Sweep up and dispose of removed grass, dirt and other debris
Wet wash INDOORS only, if needed to complete the job
Avoid detergents and other chemicals
Absolutely no engine cleaning, degreasing or fluid removals
Clean up after yourself when finished

7. Questions or Comments? See something that’s not right?
Ask Questions
Talk to your manager
Talk to EHS
Julianne Rantala
U Health and Safety
Environmental Health and Safety