Polychlorinated biphenyls (PCBs) are human-made chemicals that were used in building materials and electrical equipment before 1980. Schools renovated or built before 1980 are more likely to have PCBs in their building materials, typically caulk and fluorescent light ballasts.
Guidance for Construction of Public Works Projects in Areas Where Contamination is Suspected or Known
To minimize potential health impacts from open burning, we recommend utilizing air quality forecasts when planning the burn. Depending on the meteorological conditions, the proximity of the burn to residences, and air quality level on the day of the burn, smoke from open burning may cause health problems such as respiratory effects or aggravation of heart and lung diseases.