In 2014, the Agency collected public comment and information to support of its review of the standards in an Advance Notice of Public Rulemaking (ANPR). EPA did not propose any changes to the current standards in the ANPR.
A summary of the comments is below:
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Summary of Comments, ANPR for 40 CFR Part 190 (PDF)(7 pp, 60 K)
Summary of public comments received from ANPR for 40 CFR Part 190.