The Doe Run Co. operates the Church Street air monitoring station on corporate property in Herculaneum. Until 2013, Doe Run maintained a primary lead smelter in Herculaneum. Data from the monitor provide valuable information about the concentration of airborne lead. The department oversees Doe Run's operation of the Church Street monitor and other company monitors.
Since the monitor is inaccessible to the public, this data cannot play a role in determining whether the area meets the federal lead standard. In other words, the station does not have an ambient air monitor. The company has several other monitoring stations in the area, all of which are ambient air monitors.
To learn about other air monitoring sites the department operates as part of the state's ambient air monitoring network, visit Air Monitoring Sites.
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
- Map of Missouri's monitor sites 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.
951 Church St.
Herculaneum, MO 63048
United States
Air Pollution Control Program
Division of Environmental Quality
P.O. Box 176
Jefferson City, MO 65102-0176
United States