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Notice of Availability of the Demonstration of the Occurrence of Three Exceptional Events for April and October 2013

Notice of Availability of the Demonstration of the Occurrence of Three Exceptional Events for April and October 2013

El Centro, CA (February 24, 2016) - The Imperial County Air Pollution Control District (Air District) has prepared three Draft Exceptional Event (EE) Demonstrations which support the requested exclusion of the measured concentrations at the Brawley and Niland monitors on April 15 and 16 and October 9 and 28 of 2013 (see below).

April 15 and 16 of 2013
Brawley 24 hr concentration from the Federal Equivalent Method BAM of 248.4 ug/m3
Brawley 24 hr concentration from the Federal Equivalent Method BAM of 189.4 ug/m3
Brawley 24 hr concentration from the Federal Reference Method monitor of 165 ug/m3
Niland 24 hr concentration from the Federal Equivalent Method BAM of 305.3 ug/m3

October 9 and 28 of 2013
Brawley 24 hr concentration from the Federal Equivalent Method BAM of 359.4 ug/m3
Niland 24 hr concentration from the Federal Equivalent Method BAM of 389.9 ug/m3
Niland 24 hr concentration from the Federal Equivalent Method BAM of 191.6 ug/m3

The public and all interested parties are encouraged to review and comment on the Draft EE's for April 15th and 16th and October 9th and 28th of 2013 which provide the supporting evidence that on April 15th and 16th and October 9th and 28th of 2013 the Brawley and Niland monitors were impacted by elevated levels of particulate matter of an aerodynamic size less than 10 microns (PM10) caused by winds which followed two differing weather systems that impacted Riverside, Imperial and Yuma counties. The Draft EE Demonstrations provides 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 March 30, 2016 by close of business.

The Draft EE's for April 15th and 16th and October 9th and 28th of 2013 are available for download at the Air District website at www.co.imperial.ca.us, under "Air Pollution". To view the Draft EE demonstrations, 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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