ST. LOUIS (KTRS) Once again, the city of St. Louis has an air pollution monitoring program and soon, two inspectors will patrol construction projects across the city.

The law is the result of a yearlong effort by 20th Ward Alderwoman Cara Spencer. It gained added momentum when hazardous materials were released into the air from a fire that destroyed four buildings on the northside this month. Those materials included asbestos. Spencer says the new law is important today because of the construction work that’s underway downtown.

Mayor Lyda Krewson signed the bill into law last week.