Stormwater/ NPDES Mrs. Perryman Mrs. Trimble. Stormwater Water that runs off impervious surfaces...

Stormwater/ NPDES

Mrs. Perryman

Mrs. Trimble

Stormwater• Water that

runs off impervious surfaces into a surface water.

• And now...a message from your goldfish!

Problem Sources

• Non-Point Pollution -comes from many sources rather then from a specific single source STORMWATER

• Point Pollution- Comes from a single specific source

Examples of Non-point Sources

• Urban Run-off– lawn chemicals– Erosion – pet waste– household waste– Automobiles– Landfills– Atmosphere

Help Ducky!

Agriculture Non-point Sources

– Soil erosion

– Nutrients

– Organic matter

– Pathogens

– Hormones

– Antibiotics

– Chemicals– Animal wastes

Hydrological Problems

• Disruption of natural water balance

• Increased flood peaks• Increased storm run-off• More frequent flooding• Increased bank full flows• Lower dry weather flows• Flash Flooding• Holy cars batman

Pollution Hotspots!

• Auto recycling • Commercial parking

lots• Construction activities• Fleet storage• Industrial rooftops• Industrial storage and

unloading• Public works areas

• Vehicle service and maintenance

• Vehicle washing/ steam cleaning

Typical Urban Pollutants

• Suspended solids

• Nutrients (nitrogen and phosphorous)

• Pesticides and herbicides

• Oil and grease

• Temperature

• Heavy metals (copper, zinc, lead, cadmium and mercury)

This effects water quality by:

• Increased stream temperature• Increased pollutants• Increased risk of fish advisories• Increased risk of beach closings• Public advisories• Fish kills

What are the solutions

• Truck washing pads

• Urban stormwater ponds

• Vegetative buffers

• Shoreline stabilization

• Wetland and natural treatments

Silt Fences

• When all else fails

Silt fences

Citizen Complaint Form

http://www.epa.state.il.us/pollution-complaint/

Best Practices

Legislation that helps:

• Section 319 of Clean water Act- Non-point Source Management

• Clean Water State Revolving Loans

• NPDES Program

• 303d List- Threatened and Impaired Waters TMDL

NPDES

• National Pollutant Discharge Elimination System

–Phase I- Addressed the physical facilities of the villages and cities

–Phase II- Public Education and Outreach

TRAP water were it falls

• Catch water where it falls!