WHERE IS TOLUENE FOUND? HOW MIGHT I BE EXPOSED TO TOLUENE?
Toluene can be released into the air, water, and soil at places where it is produced or used. Toluene is commonly found in air, particularly when there is heavy vehicular traffic. Monitoring data of outdoor air in the United States shows that toluene is present at average levels of approximately 1–35 parts per billion by volume (ppbv). Indoor air samples can contain higher levels of toluene in places where products such as paint thinners, solvents, or tobacco products are used