Site remediation Mact Summary
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1. What is the purpose of this rule? 
The Clean Air Act requires EPA to establish standards to control HAP (hazardous air pollutant) emissions from source categories identified under section 112(c) of the Act. An initial source category list was published by EPA in 1992. This list identified site remediation activities as a source category for emitting air toxics (hazardous air pollutants). These pollutants are known or suspected to cause cancer or other serious health and environmental problems.
This purpose of the rule is to establish national emissions limitations and work practice standards for hazardous air pollutants (HAPs) emitted from site remediation activities. The rule also establishes requirements for the affected sources to demonstrate initial and continuous compliance with the emissions limitations and work practices.
Site remediation involves the removal of hazardous substances from contaminated media (soil or groundwater), removal of the contaminated media itself, or removal of the hazardous substances by themselves. Site remediation can be conducted at industrial facilities such as chemical manufacturing facilities, petroleum refineries, and metal finishers; government facilities such as military installations; and other facilities.
The final rule will affect approximately 250 facilities conducting site remediation activities.
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