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Exceptional Events Submissions Table

These documents are examples of exceptional events submissions, or the decision documents

responding to the demonstrations, for various cases of exceptional events. The purpose of this table

is to provide examples of exceptional events demonstrations that have been reviewed by EPA. This

table is not intended to serve as a database for all Agency actions on exceptional events. These

examples may help agencies develop demonstration packages submitted in support of requests for

data exclusion due to influence of exceptional events; however, they may not contain the minimum

level of data or case-specific analyses necessary for any other exceptional events demonstration.

Please note that not all concentrations addressed in the demonstrations in this table may have

resulted in EPA concurrences.

PM2.5

Event Agency Location Available Documentation

Volcanic Emissions

2011-2013

Hawaii Dept of

Health Kona, Hawaii

HDOH 2011-2012 Demonstration

(12/11/13) (PDF, 6.5 MB)

HDOH Received Public Comments on

2011-2012 Demonstration

(3/3/14) (PDF, 188 KB)

HDOH 2011-2012 Demonstration

Addendum and 2013 Demonstration

(7/1/14) (PDF, 26.9 MB)

EPA response letter and technical

support document (7/10/14) (PDF, 2.2

MB)

EPA memorandum correcting

typographical error (10/27/14) (PDF,

124 KB)

Summer 2008

Wildfires

(series 2)

California ARB Plumas and

Shasta Cos.

Shasta-Plumas demonstration series 2

(8/28/09) (ZIP, 463 KB)

EPA response letter (4/02/10) (PDF, 53

KB)

EPA technical support document

(3/30/10) (PDF, 1.5 MB)

Summer 2008

Wildfires

(series 1)

California ARB Plumas and

Shasta Cos.

Shasta-Plumas demonstration series 1

(8/28/09) (ZIP, 900 KB)

EPA response letter (3/11/10) (PDF, 60

KB)

EPA technical support document

(3/11/10) (PDF, 1.5 MB)

Summer 2007

Wildfires California ARB Plumas Co.

Plumas demonstration (6/17/09) (ZIP,

29 MB)

EPA response letter (3/11/10) (PDF, 60

KB)

EPA technical support document

(3/11/10) (PDF, 980 KB)

Technology Transfer Network

Air Quality Analysis

http://www.epa.gov/ttn/analysis/exeventstable.htm

Last updated on 12/8/2014

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July 2008 Fireworks Illinois EPA Granite City, IL 

Granite City demonstration

(6/17/09) (ZIP, 603 KB)

EPA response letter (7/24/09) (PDF, 225

KB)

EPA technical support document

(7/24/09) (PDF, 443 KB)

Summer 2007

Wildfires Montana DEQ Multiple locationsacross Montana

MT DEQ demonstration

(12/14/07) (PDF, 43 MB)

EPA response letter (8/18/08) (PDF, 758

KB)

EPA technical support document

(8/18/08) (PDF, 272 KB)

July 2007 Wildfire Utah DEQ Lindon, UT

Lindon demonstration (12/24

/2007) (PDF, 3 MB)

EPA response letter (4/29/08) (PDF, 612

KB)

July 2007 Fireworks Utah DEQ Rose Park, UT

West Valley, UT

Rose Park demonstration (12/24

/2007) (PDF, 895 KB)

West Valley demonstration (12/24

/2007) (PDF, 877 KB)

EPA response letter (4/29/08) (PDF, 612

KB)

PM10

Event Agency Location Available Documentation

July 2011 High

Wind Dust Event

Clark County

Nevada DAQ Las Vegas Valley

Clark County NV demonstration

(4/11/14) (PDF, 28.5 MB)

EPA response letter and technical

support document (06/25/14) (PDF, 664

KB)

July 2011 High

Wind Dust Event Arizona DEQ Phoenix, AZ

AZ DEQ demonstration (3/8/12) (PDF,

9.6 MB)

EPA response letter and technical

support document (9/6/12) (PDF, 801 KB)

August 2007

Wildfires Montana DEQ Silverbow Co., MT

MT DEQ demonstration (12/14/07) (PDF,

43 MB)

EPA response letter (8/18/08) (PDF, 758

KB)

EPA technical support document

(8/18/08) (PDF, 272 KB)

Ozone

Event Agency Location Available Documentation

June 2012

Stratospheric Ozone

Intrusion

Wyoming

Department of

Environmental

Quality

Big Piney and

Boulder, Wyoming

WYDEQ demonstration (PDF, 5.2 MB)

EPA response letter (May 28,

2014) (PDF, 72 KB)

EPA Technical Support

Document (PDF, 2 MB)

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April 2011 Fires

Kansas

Department of

Health and

Environment

Kansas City,

Wichita, and

Topeka areas, KS

KDHE demonstration (11/27/12) (PDF,

18.2 MB)

EPA response letter (12/28/12) (PDF,

96 KB)

Summer 2008

Wildfires California ARB SacramentoCounty, CA

CARB demonstration (3/30/11) (ZIP,

80 MB)

EPA response letter (4/13/11) (PDF, 92

KB)

EPA technical support document

(4/13/11) (PDF, 238 KB)

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