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Notice of Availability of the Demonstration of the Occurrence of Five Exceptional Events

Notice of Availability of the Demonstration of the Occurrence of Five Exceptional Events

The Imperial County Air Pollution Control District (Air District) has prepared five Draft Exceptional Event (EE) Demonstrations, which support the requested exclusion of measured 24-hour concentrations at the Air District air monitoring sites. Listed on the link provided below are site and concentration as measured by a Federal Reference Method monitor (FRM) or with a continuous Federal Equivalent Method monitor (FEM) are the five Draft EE's.

The public and all interested parties are encouraged to review and comment on the five Draft EE's listed above. These demonstrations provide the supporting evidence that on the days indicated for 2015 and 2016 Air District air monitors were affected by transported elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10). Winds, associated with a weather event suspended and transported PM10 into the region affecting areas within San Diego, Riverside, Yuma and Imperial counties. The five Draft EE's provide the scientific justification for the requested exclusions. The Air District is soliciting and accepting comments for 30 days commencing the date of the publication of this notice. The final closing date for submitting comments is July 30, 2018 by close of business.

The five Draft EE's for days listed above are available for download at the Air District website at www.co.imperial.ca.us, under "Air Pollution". To view a hard copy of any of the eight Draft EE's, please visit the Air Pollution Control District office at 150 S. 9th Street, El Centro. Should you have any questions or concerns please feel free to call our office between 8am and 5pm at (442) 265-1800 and ask for Monica N. Soucier.

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