The department's air monitoring station at St. Joe State Park stands on land that housed a mine in the state's old lead belt south of St. Louis. The St. Joe Minerals Corp. ceased its mining operations in 1972, and four years later, it donated the land to the state for a park. Today, once-mined areas underlay about 25 percent of the park, and remnants of the mining era include the milling complex, now home to a gallery of mining equipment as well as a rock and mineral museum.
Pollutants
Lead
Since 2008, the primary and secondary ambient air standards for lead have remained at 0.15 micrograms per cubic meter (μg/m3). The primary standard reflects EPA's concern for public health, while the second standard demonstrates concern for public welfare. EPA bases the standard on the highest rolling three-month average over a period of three years and two months. A monitoring site meets the standard when the lead concentration is less than or equal to 0.15 μg/m3 averaged over three months. The standard is not met if the concentration exceeds that level once or more within a three-year period.
- Three-month average lead concentrations for the most recent 12 months
- State map with monitors for lead in ambient air
- Additional information about Lead State Planning efforts
Technical issues can affect ability to deliver quality data. Access a table of symbols with explanation of the problems they represent.
2800 Pimville Road
Park Hills, MO 63601
United States
Air Pollution Control Program
Division of Environmental Quality
P.O. Box 176
Jefferson City, MO 65102-0176
United States