Hydrocarbons Stormwater Pollution

Hydrocarbon Pollution

Spot It – Report It – Stop It!


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Hydrocarbons Overview Types of Hydrocarbons How To Prevent Stormwater Pollution

Report Stormwater Pollution

If you see stormwater pollution, call the Stormwater Helpline at 919-996-3940 or email IllegalDischarge@raleighnc.gov. For large spills from storage tanks or vessels, call the 911.

If you see or experience a water line break, contact the Raleigh Water Call Center at 919-996-3245.

Hydrocarbons Overview

Hydrocarbon compounds (a compound of hydrogen and carbon) can be naturally occurring or man-made and are pollutants that are commonly found in urban stormwater. Hydrocarbons can be toxic even at low concentrations and can impact aquatic life and human health.

Examples include: coal, insulating oils, tar, gasoline or diesel fuel, hydraulic fluids, motor oils, lubricants, fats, oils, and grease, or come from the result of burning wood, garbage, and other products. 

In many cases, rainbow-like sheen and strong odor are common with hydrocarbon pollution.

Visual of iron bacteria and gasoline in a stream.

In some instances, a bacterial sheen will look like oil. Oil typically bonds to itself and does not mix easily with water. To find the difference, break the sheen by disturbing the material. Bacteria will typically break into little platelets while oil will reform to itself.

Types of Hydrocarbons

Petroleum spilling from a truck

Petroleum Hydrocarbons

These chemical compounds are commonly the result of accidental releases of oil or fuel from vehicles and machinery. Thousands of small fuel spills can accumulate to very high concentrations as they are collected and transported by stormwater to a receiving water.

Polycyclic Aromatic Hydrocarbons Stormwater Pollution

Polycyclic Aromatic Hydrocarbons

Polycyclic Aromatic Hydrocarbons, or PAHs, are from coal, oil, gas and wood. Sources of PAHs are asphalt and coal, oil spills, vehicle exhaust, and fires. 

PAHs can be toxic even at low concentrations and can impact aquatic life and human health. They are well known chemicals that can bioaccumulate in aquatic life, leading to impacts on aquatic ecosystems.

How To Prevent Stormwater Pollution

  • Inspect and maintain equipment and vehicles regularly. If there is a drip or leak, fix it!
  • Have spill response material and procedures in place where fueling or maintenance occurs. This can include adsorbent material, booms, brooms and brushes, and disposal bags.
  • Regularly inspect storage tanks for leaks.
  • Use non-PAH sealants for pavement.
  • Regularly maintain oil-water separators, grease trap interceptors, and other waste control measures before they fail.
  • Store chemicals properly under cover and on pallets.

Contact

 

Zachary Poole
Illegal Discharge Coordinator
IllegalDischarge@raleighnc.gov
919-996-3940

Department:
Engineering Services
Related Services:
Spot, Report, and Stop Water Pollution

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