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We have represented many different types of facilities and sources that emit greater than a de minimis amount of air pollutants and are thus subject to complex air pollution requirements.

We have handled matters in different States including applicability determinations, permitting, regulatory compliance, and enforcement defense regarding:

• New Source Review
• Prevention of Significant Deterioration
• New Source Performance Standards
• National Emission Standards for Hazardous Air Pollutants, including asbestos matters
• Emission Inventories
• Pre-construction Permits
• Operating Permits

In 1997, Mr. Jeffery argued the case before the Missouri Supreme Court - Corvera Asbestos Abatement v. Air Conservation Commission - which invalidated the State's Asbestos rules.

In 1992-1993, Mr. Jeffery served on the Missouri Air Law Advisory Group (MALAG), which was the first major negotiated rulemaking conducted by the Missouri Department of Natural Resources and which concerned the development of the Operating Permit rule in Missouri.