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Lime Manufacturing Plants National Emission Standards for Hazardous Air Pollutants (NESHAP)

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Rule Summary

This rule applies to commercial and captive lime manufacturing plants that are located at a major stationary source of hazardous air pollutants (HAP).  The rule regulates particulate matter (PM) emissions, as a surrogate for the non-volatile and semi-volatile metal HAP, from lime kilns, coolers, and certain material processing operations.

Rule History

07/24/2020 - Final Rule

09/16/2019 - Proposed Rule

01/05/2004 – Final Rule

12/20/2002 – Proposed Rule

Additional Resources

Fact Sheet:  Final Amendments to Air Toxics Standards for Lime Manufacturing Plants

Fact Sheet:  Proposed Risk and Technology Review Amendments

Final Rule to Reduce Toxic Air Emissions from Lime Manufacturing Plants Fact Sheet

National Emission Standards for Hazardous Air Pollutants (NESHAP) for Lime Manufacturing Background Information Document (BID): Public Comments and Responses

Economic Impact Analysis For the Lime Manufacturing MACT Standard Final Report

For additional documents related to this rule, view the documents in the docket folder.

Related Rules

Lime Manufacturing Plants New Source Performance Standards (NSPS)


The Environmental Council of the States. ExitThe website provides state delegation information for environmental programs. To view delegation information for a specific state or for a specific program, go to To see delegation information for the Clean Air Act specifically, go to