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Region 7 Air Program

Serving Iowa, Kansas, Missouri, Nebraska and 9 Tribal Nations


Glover, Missouri, Lead Attainment Plan

Background of the Plan: In 1987, the state began to record violations of the lead standard approximately two miles from the Glover, Missouri, primary lead smelter facility (presently operated by Doe Run). The National Ambient Air Quality Standard (NAAQS) for lead is 1.5 micrograms (µg) of lead per cubic meter (m3) of air averaged over a calendar quarter. These data prompted Region 7 to request more monitors in closer proximity to the source. On November 5, 1990, the EPA requested that the state of Missouri revise the State Implementation Plan (SIP) for this facility based upon modeling and monitored violations during 1988, 1989, and 1990. On November 6, 1991, the EPA designated the Liberty and Arcadia Townships which surround the Glover facility as nonattainment for lead. This designation became effective on January 6, 1992 (refer to 56 FR 56694).

Summary of the Plan: After continued modifications of the SIP and regulatory proceedings the EPA was able to find that the state's August 14, 1996, SIP submittal was complete. On March 5, 1997 (62 FR 9970), EPA granted final approval to the SIP submitted by the Missouri Department of Natural Resources (MDNR). This action set the lead attainment date of January 6, 1997, for Liberty and Arcadia townships. Since 1996, the SIP control strategy for Glover has maintained compliance with the lead NAAQS; refer to MDNR's Website for monthly updated monitoring results for the Glover area.

Emission Reductions: Implementation of the control strategy will result in approximately a 99 percent reduction in lead emissions from significant point and fugitive sources that were modeled as contributing to nonattainment in the Glover area.

Stationary Source Control Measures: Control measures employed by Asarco (now operated by Doe Run) involve engineering modifications to the facility which include: removal of the concentrate loading dock, enclosure projects, improved ventilation systems being routed to stacks, improved material handling conveyors, and installation of air pollution control equipment (baghouses) . The selected control strategy was developed by applying appropriate control measures for each significant source that had an affect on the ambient air. A listing of selected measures is as follows:

  • Remove the Concentrate Unloading Dock
  • Enclose Sinter Plant
  • Enclose Sinter Handling Conveyor and Unloading Building
  • Install New Baghouses to capture Process Gases from the Sinter Plant
  • Install a scrubber at Sinter Plant
  • Increase ventilation through hoods at the Blast Furnace

Stationary Source Regulations: One stationary source rule, one Consent Decree, and one Work Practice Manual were approved as part of this plan. These include:

Contingency Measures: The state submission specifies an attainment date for the Glover area of January 6, 1997, as set in the state SIP. If the air quality data for the calendar quarter following the attainment date (January 6, 1997), or any quarter thereafter, exceed the NAAQS for lead, the first contingency measure will be implemented. If the lead standard is not achieved in the following quarter, contingency measures 2, 3, and 4 will be implemented. If the NAAQS has not been met after implementation of these measures, then the remaining contingency measures will be implemented.

  1. Install a truck wash at exit of unloading building.
  2. Expand in-plant road sprinkler system.
  3. Withdraw unloading building air for sinter plant make-up air.
  4. Asarco shall meet the following stack emission limits:

    Emissions Limitation
    Stack Names (lbs. per 24 hours)

    Main           160.1
    Ventilation Baghouse          108.9
    Blast Furnace           71.5

  5. Allow lead bullion pots to cool before dumping into receiving kettles.
  6. Modify refinery skims handling in blast furnace area.
  7. Increase efficiency of sinter plant ventilation baghouse.

Doe Run-Glover will also maintain current bids on the materials necessary to implement each contingency measure. Doe Run-Glover also may substitute any such controls if Doe Run-Glover can demonstrate to MDNR and EPA that the alternative control measures would equal or exceed controls in the current SIP.

EPA Region 7 Contact: Josh Tapp, (913)-551-7606, tapp.joshua@epa.gov

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