the dirt on water pollution. what will we talk about? what is a watershed? stormwater in our...
TRANSCRIPT
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The Dirt on Water Pollution
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What will we talk about?
What is a Watershed?
Stormwater in our Watersheds
Water Pollutants
Effects of Pollution
Solutions
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What is a Watershed?
All the water and the land area that “sheds” its water into a particular river, bay, or ocean
What are Delaware's Watersheds?
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According to the State of Delaware’s 2000 Watershed Assessment Report...
“96% of Delaware’s rivers and streams do not fully support the swimming use and 71% do not fully support the fish and wildlife use.”
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Impervious Surfaces
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Consider This…
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The Effect of Impervious Surfaces
25-60% Impervious Cover25-60% Impervious Cover5% Impervious Cover
10% Impervious Cover
Less than 5% Impervious
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How does stormwater in
my neighborhood
affect streams?
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Stormwater Contributes to Water Pollution
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Wait! Storm drains filter and clean
the water before they go into streams…
… right??
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Storm drains do not filter water runoff before they empty into local waterways
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Common Water Pollutants Found in Stormwater
Nutrients (nitrogen & phosphorus)Nutrients (nitrogen & phosphorus) Pesticides/HerbicidesPesticides/Herbicides SedimentsSediments BacteriaBacteria Oil and GreasesOil and Greases
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Nutrients
Causes of nutrient pollution
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Nutrients act as “vitamins” for plant and algae growth in the water
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Sediment
Common sources of sedimentation are erosion from unprotected stream banks
and having bare soils exposed
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Suspended sediment gives waterbodies a brownish color.This reduces amount of sunlight in the water that is important to aquatic life
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Bacteria
Animal waste and human waste get washed into rivers and streams by stormwater flows.
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Bacteria found in waste material can be harmful to humans and wildlife
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Pesticides and Herbicides
Just like fertilizers, applying too much pesticide and herbicide can contribute to water pollution
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Oils, Greases and Household Chemicals
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A Common Theme…
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Look at it this way…
Property of Salt Lake County, Utah, copyright owner. Used with permission
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Water Pollution is Everyone’s Problem
So, Be Part Of The Solution!
What are some things that I can do that will make a big difference?
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Report Illegal Storm Drain Dumping
To Report Call:To Report Call:
DNREC 800-662-8802 DelDOT 800-652-5600
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To Report a Stormwater Maintenance Concern
DNREC Stormwater Help Line:
800-464-4357
DelDOT General Information:
800-652-5600
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Dispose of Hazardous Waste Properly
Hazardous materials should never be poured down storm drains or buried
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Clean up After Your Pet
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Maintain Cars
Check for drips and leaks of automotive fluids Clean up all spills immediatelyRecycle your car’s oil
Properly dispose of other automotive fluids as household hazardous wasteWash your car on a grassy area or use a carwash (they recycle water!)
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Aim downspouts into a vegetated, or grassy area (away from the house), instead of the driveway, so that the water will be absorbed into the ground
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Plant Native Plants
Native trees and plants slow down water runoff and their deep root structure stabilizes soils
Since they are used to local weather, they need little or no maintenance and can add a great look to your yard!
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Have your Soil Tested…
…Before adding fertilizer
New Castle Cooperative Extension
(302) 831-2667
Kent Cooperative Extension
(302) 730-4000
Sussex Cooperative Extension
(302) 856-2585
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Yard and Gardening
Start a compost pile. It is a great way to cut back on waste and fertilizer use (and save money)!
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More Yard and Gardening
Let your grass clippings lay on your yard (they work as fertilizer for the soil) or use them as compost!
Mow your yard to no shorter than 2 or 3 inches high and never cut along stream banks
During a drought, water your lawn infrequently. Your lawn will naturally recover from a drought period and frequent watering encourages shallow roots and weeds.
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Control Sediment
Control sediment by protecting exposed soil when digging on your property, terracing steep slopes, and planting native trees and shrubs along stream banks
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Maintain Septic Systems Properly
Remember to have your septic inspected every 3-5 years
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Helping to Solve the Problem
DelDOT’s Stormwater Quality Program works to prevent harmful pollutants from being washed by stormwater runoff (or dumped) into the storm sewer system and then discharged from the storm sewer system into local waterbodies.
What specifically does the Stormwater Quality and the NPDES Program do?
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The Stormwater Quality Program Includes
Performing illicit discharge investigation and remediation
Controlling construction site stormwater runoff
Managing post-construction stormwater in new developments
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BMP retrofits, structural controls and operations, spill prevention and response, and flood control projects
Also…
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And…
Public education and training
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For more information…
About stormwater issues and what we discussed in this presentation, you can:
Visit our website at: www.deldot.gov/stormwater
or Request the Delaware Nature
Society and the Stroud Water Research Center’s video: Protecting Our Waters: Who’s Got The Power? from DelDOT
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Thank youDo you have any Questions?