This guidance is designed to assist air agencies who may wish to submit PM2.5 precursor demonstrations as permitted by the PM2.5 SIP Requirements Rule. The EPA will accept comments on the draft PM2.5 Precursor Demonstration guidance for 60 days, through the close of business on January 31, 2017.
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- Draft PM2.5 Precursor Demonstration Guidance and Transmittal Memo (PDF)(54 pp, 869 K)
Webinar Slides for the Draft PM 2.5 Draft Precursor Demonstration Guidance (PDF)(18 pp, 388 K,