Posted in Blog  
  on Jul 25, 2013

13 Eye Opening EPA Vapor Intrusion and Extraction Facts

13 Eye Opening EPA Vapor Intrusion and Extraction Facts

Understanding Vapor Intrusion


Vapor intrusion (VI) is seen when vapors and gases from local contaminated soil and groundwater make their way into your home through cracks in a basement, slab, beam, or crawl space.

People at Risk


• Elderly
• Pregnant/Nursing
• Infants
• Children
• People with An Illness

Risky Health Factors


• Types of chemicals
• Levels of chemicals
• Length of exposure
• Sensitivity to chemical
• Health of individual

Causes of VI


VI comes from chemicals that readily evaporate and have vapors called Volatile Organic Chemicals. These VOCs can come from gas stations and dry cleaners as well as thousands of other forms of releases created from the manufacturing industry.

Over 121,000 gas stations across the United States have leaking underground storage tanks. Nearly 40,000 dry cleaners around the US can release VOCs in their surrounding environment. Most states have some form of VI guidance.

As 70% of American’s spend their time at home, the EPA is issuing VI guidance in 2013 with the hopes of reducing VI hazards through guidelines, adoption of these guidelines, training, public education, and research for advancement.

Solutions for VI


The average cost range for VI intrusion is $1,500 to $5,000. Fans or exhaust piping can be installed to control vapor and create a mitigation system. Soil vapors below can become removed before they enter the home and vented above the home where they can be considered harmless.

Cracks that occur in the foundation should also be sealed up to prevent vapors from entering. Once the source of vapors is eliminated the system will no longer be necessary. Using environmentally friendly products can help to reduce the risk of exposure to volatile chemicals as well as maintaining awareness of the hazardous vapors that may exist in the land around you.

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