ENSR International issues guidance as EPA finalizes NSR rule


WESTFORD, Mass., Jan. 13, 2003 — Thousands of U.S. companies could be affected by new rules under the Clean Air Act’s New Source Review (NSR) provisions, published in the Federal Register by the US EPA on December 31, 2002.

The rule was initially signed and released on November 22. ENSR International, a leading environmental and energy services firm, has developed guidance to help clients take advantage of the increased flexibility provided by the NSR reforms.

Approximately 17,000 sources nationwide are covered under EPA’s NSR requirements, originally promulgated in its current form in 1980. Facilities that expand or change operations in a way that increases emissions significantly are required to install modern pollution controls and assess the impacts of their changes on ambient air quality.

The latest EPA revisions include: a new method of emissions accounting to determine if a modification is “major”; a new method to determine baseline emissions; Plant Wide Applicability Limits as an alternative NSR applicability approach; and a new applicability provision for emission units designated as “clean units”.

According to ENSR’s Technical Director for Air Quality Studies, Robert Iwanchuk, the regulatory revisions will take effect in two stages. For facilities in states with delegated authority to issue NSR permits, the changes will become effective 60 days after publication in the Federal Register.

These states are Massachusetts, New York, New Jersey, Washington, Nevada, Minnesota, Illinois, Michigan, and Ohio. In areas that have an EPA- approved NSR program (also called a state implementation or SIP-approved program), the rule will not become effective until EPA publishes a SIP revision adopting the revisions, a process that could take up to three years.

ENSR has digested EPA’s final rule and supporting discussion to a ten-page summary and a “tip sheet” to help companies take advantage of the changes to the NSR regulations. In addition to helping clients understand the final rule, “ENSR’s guidance document will help our clients save time and money by implementing changes more quickly, efficiently, or avoiding NSR altogether,” said Iwanchuk.

ENSR’s NSR/Air Permitting services include control technology assessment, air quality modeling, regulatory negotiations, and permitting strategy. ENSR has assisted thousands of clients in successfully negotiating and securing NSR permits in every EPA region and state.

For more information on how EPA’s New Source Review rule changes may affect your facility, request a copy of ENSR’s NSR Update by calling (800) 722-2440 or visiting www.ensr.com/request.

ENSR International (www.ensr.com) is a worldwide environmental and energy development services company with 35 years of experience serving industrial companies from 70 international offices.


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