Two databases are available The TRI isn't the only tool to track how chemicals are used. The Department of Natural Resources keeps a host of records about businesses and municipal services that need permits to emit pollutants to air and water or dispose of wastes on land. This database has made it easier and quicker to learn about the combined pollutants emitted by businesses and municipalities. Getting the big picture is only a first step in judging risks posed by chemical usage in a community. Both the TRI and ITRS list chemical releases and transfers in pounds, but quantity alone is not enough to determine risk.
Some chemicals have greater health consequences than others.
For example, a pound of ammonia vapors is not as toxic as a pound of lead. Furthermore, we know little about the cumulative health and safety risks of the dilute mix of chemicals we are typically exposed to in communities. Over the years, Wood County citizens have expressed concern over air quality in their area. School nurses and citizen groups noticed what seemed to be a high incidence of asthma and upper respiratory problems. They wondered if the health conditions might be caused or exacerbated by industrial emissions.