In October 2008, EPA tightened its limits on airborne lead emissions for the first time in 30 years — a move that required a significant expansion of EPA's lead monitoring network. Additional lead monitoring stations would have been placed near facilities such as coal power plants, smelters, airports, and foundries that emit about a half ton of lead per year — as well as in 101 urban areas with a population of at least 500,000.
But the Bush Administration, through the OMB, swiftly pressured EPA to water down that monitoring requirement to only require placing new monitors near facilities emitting one ton of lead per year.
- OMB backgrounders: After White House Interference, EPA to Reconsider Lead Monitoring  and New Monitoring Requirement Undercut by OMB. 
Now EPA may get more or all of the monitors it originally wanted. On July 22, EPA announced it will reconsider its requirements for measuring airborne lead:
- EPA Release.  Press: Cathy Milbourn,  202-564-7849 or 202-564-4355. Fact sheet. 
- EPA national, state, and local summaries of lead emissions. 
- EPA lead emissions regulatory background. 
- EPA lists of lead nonattainment areas,  sorted by state, area, and county.
- Feb 2009 EPA info on lead monitoring network design issues. 
EPA revisited lead monitoring in response to a January 2009 petition from the MO Coalition for the Environment Foundation, NRDC, the Coalition to End Childhood Lead Poisoning, and Physicians for Social Responsibility.
- Petition. 
- Attorneys: Avinash Kar and Selena Kyle, 415-875-6100. Maxine Lipeles, WA Univ. school of law, St. Louis, MO: 314-935-5837.
- NRDC press: Jessica Lass (310-434-2300) or Liz Heyd, (202-289-2424).
NRDC map of US lead polluters,  searchable by state. Most of the larger polluters are clustered in the Northeast and Midwest, but most states have at least some facilities that would require monitoring under this rule.
This move does not change the timeline for states to meet the revised lead standards set in 2008. States must recommend areas to be designated as being in attainment, nonattainment, or unclassifiable by October 2009. These designations will be finalized by January 2012.
EPA expects to issue a public proposal for lead monitoring later this summer, and a final rule in early spring 2010.
- Lead Industries Association: Jeff Miller, 800-922-5323.