WASHINGTON (CN) - The Environmental Protection Agency is proposing to lower the lead emission threshold at which monitoring agencies are required to conduct lead monitoring near a lead source to 0.50 tons per year from an emissions threshold of 1.0 tons per year.
The agency's proposed action is in response to a petition filed by the National Resources Defense Council, Physicians for Social Responsibility and the Coalition to End Childhood Lead Poisoning and other environmental organizations. The groups argued that the emission and population thresholds required for automatic monitoring were too high.
In a previous proposal, the agency required monitoring only when the population exposed to the emission source was greater than 1 million. In response to the petition, the agency has lowered the population threshold to 500,000.
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