Exceptional events submittals
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Exceptional Events Submittals. WESTAR Fall Business Meeting Salt Lake City, Utah October 29, 2012. Region 6 Exceptional Events. *Notes: Submittal for 2008 was prepared prior to draft EPA guidance, and some elements are being updated to conform to draft guidance.

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Exceptional events submittals

Exceptional Events Submittals

WESTAR Fall Business Meeting

Salt Lake City, Utah

October 29, 2012


Region 6 exceptional events

Region 6 Exceptional Events

*Notes: Submittal for 2008 was prepared prior to draft EPA guidance, and some elements are being updated to conform to draft guidance

For further information: Contact Michael Baca (575) 647-7983 [email protected]


Exceptional events submittals

Region 8 Exceptional Event Demonstrations Status (data since Exceptional Events Rule became effective in May 2007)

Total Official Submissions: 38

Prioritization for Pending Reviews: High priority packages currently are those which impact Utah PM2.5 nonattainment area SIP development or Colorado PM10 maintenance areas up for 5 year maintenance plan update; the remainder are currently of lower priority

More Information?: Contact Richard Payton, EPA Region 8, [email protected], (303) 312-6439)


Region 8 state exceptional event demonstrations submitted state information

Region 8 State Exceptional Event Demonstrations submitted (state information)

Note: Discrepancy with R8 information undetermined


Region 9 exceptional events

Region 9 Exceptional Events

NOTES: Some demonstrations are still in development, not all packages received are complete; most flags (non-SO2) currently do not have documentation; not all flagged data are exceedances; often a single event has many flags (multiple measurements for a single averaging time, multiple sites, multiple monitors/site, multiple pollutants); Region 9 received >50 demonstration packages for events prior to Jan. 1, 2009, and took appropriate action on all complete demonstrations of regulatory significance (designations or redesignations).

Example: Arizona had 544 PM10 Exceedances (2009 to 2011), of which 367 were flagged (67%). Arizona submitted a complete demonstration for 30, and EPA concurred on 29 of those (as of Oct. 2012).

More Information?: Contact Matt Lakin (EPA Region 9, [email protected], 415-972-3851)


Region 10 exceptional events

Region 10 Exceptional Events

Notes: Eagle River (Anchorage) high wind speed dust 2007, 2009; Fairbanks, wildfire 2009

For more information, contact Justin Spenillo (206) 553-6125 [email protected]


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