Environmental laws generally regulate releases of toxic chemicals into the air and water but rarely regulate emissions into the indoor environment. Indoor air may be contaminated with numerous toxic substances and other pollutants often times at levels that exceed the limits allowable for the outdoor environment. Because people spend up to 90% of their time indoors, long- term exposure to even low levels of toxic substances may cause health problems particularly for sensitive individuals such as the elderly and children. Vapor Intrusion is becoming an increasing concern at contaminated sites under development and older sites where cleanups may have been completed but the potential for vapor intrusion was not thoroughly examined. Readers should click on the articles link for articles on vapor intrusion.
