Date post: | 14-Jan-2016 |
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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!