Air Quality Division: Plans: Final Demonstrations and Comment Period for 2007 Exceptional Events

The U.S. Environmental Protection Agency (EPA) allows data that have been directly influenced by exceptional and/or natural events (e.g., caused by blowing dust from major storms) to be excluded in the determination of exceedances and NAAQS violations for State Implementation Plan (SIP) purposes.

For more information, please contact Andra Juniel - (602) 771-4417.

TAB Agency* Date Monitor (Operator/Type) AQS ID** 24-hr Avg PM10
(or PM2.5)		 Maximum Winds Nature of Event
1 ADEQ 15-02-06 Mexico Supersite (ADEQ/BAM) 80-026-8012 185 32 mph Frontal system passage
ADEQ 15-02-06 Yuma  Courthouse (ADEQ/BAM) 04-027-0004 164 32 mph Frontal system passage
2 ADEQ 21-05-06 Yuma  Courthouse (ADEQ/BAM) 04-027-0004 194 34 mph Frontal system passage
3 ADEQ 29-11-06 Mexico Supersite (ADEQ/BAM) 80-026-8012 252 40 mph Surface cold front
ADEQ 29-11-06 Yuma Supersite (ADEQ/BAM) 04-027-8011 246 40 mph Surface cold front
4 ADEQ 01-01-07 Nogales PO PM2.5 (ADEQ/BAMS) 04-023-0004 170.8 Calm Smoke from Mexico
ADEQ 01-01-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 210 Calm Smoke from Mexico
5 ADEQ 05-01-07 Mexico Supersite (ADEQ/BAM) 80-026-8012 352 37 mph Frontal system passage
ADEQ 05-01-07 Yuma Supersite (ADEQ/BAM) 04-027-8011 291 37 mph Frontal system passage
6 ADEQ 06-02-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 180 Calm Dust from Mexico
7 ADEQ 19-02-07 Mexico Supersite (ADEQ/BAM) 80-026-8012 247 22 mph Frontal system passage
ADEQ 19-02-07 Yuma  Courthouse (ADEQ/BAM) 04-027-0004 183 22 mph Frontal system passage
ADEQ 19-02-07 Yuma Supersite (ADEQ/BAM) 04-027-8011 193 22 mph Frontal system passage
8 ADEQ 27-02-07 Mexico Supersite (ADEQ/BAM) 80-026-8012 153 36 mph Upper level trough
ADEQ 27-02-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 170 36 mph Upper level trough
ADEQ 27-02-07 Yuma Supersite (ADEQ/BAM) 04-027-8011 191 36 mph Upper level trough
9 ADEQ 06-03-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 157 Calm Dust from Mexico
10 ADEQ 15-03-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 175 Calm Dust from Mexico
11 ADEQ 11-04-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 211 45 mph Upper level trough & front
ADEQ 12-04-07 Rillito (ADEQ/FRM) {LMP Flag} 04-019-0020 124 45 mph Upper level trough & front
ADEQ 12-04-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 212 45 mph Upper level trough & front
MCAQD 12-04-07 Buckeye (Maricopa Co.[MC]/TEOM) 04-013-4011 152 45 mph Upper level trough & front
MCAQD 12-04-07 South Phoenix (MC/FRM) 04-013-4003 171 45 mph Upper level trough
MCAQD 12-04-07 West 43rd Ave (MC/TEOM)  04-013-4009 202 45 mph Upper level trough & front
12 ADEQ 04-05-07 Mexico Supersite (ADEQ/BAM) 80-026-8012 222 45 mph Frontal system passage
ADEQ 04-05-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 186 45 mph Frontal system passage
MCAQD 04-05-07 West 43rd Ave (MC/TEOM) 04-013-4009 197 45 mph Frontal system passage
13 ADEQ 21-05-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 161 31 mph Low pressure trough
14 ADEQ 05-06-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 224 40 mph Low pressure trough
ADEQ 05-06-07 Yuma Courthouse (ADEQ/Co-FRM) 04-027-0004 195 40 mph Low pressure trough
ADEQ 05-06-07 Yuma Courthouse (ADEQ/FRM) 04-027-0004 143 40 mph Low pressure trough
ADEQ 06-06-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 155 33 mph Low pressure trough
MCAQD 06-06-07 Higley (MC/TEOM) 04-013-4006 181 33 mph Low pressure trough
MCAQD 06-06-07 West 43rd Ave (MC/TEOM) 04-013-4009 225 33 mph Low pressure trough
15 ADEQ 05-07-07 Rillito (ADEQ/FRM) 04-019-0020 208 31 mph Monsoon Storm
16 ADEQ 08-07-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 185 37 mph Monsoon Storm
17 ADEQ 19-07-07 JLG Supersite (ADEQ/TEOM) 04-013-9997 521 43 mph Monsoon Storm
MCAQD 19-07-07 Central Phoenix (MC/TEOM) 04-013-3002 267 43 mph Monsoon Storm
MCAQD 19-07-07 Coyote Lakes (MC/TEOM) 04-013-4014 273 43 mph Monsoon Storm
MCAQD 19-07-07 Higley (MC/TEOM) 04-013-4006 199 43 mph Monsoon Storm
MCAQD 19-07-07 West 43rd Ave (MC/TEOM) 04-013-4009 178 43 mph Monsoon Storm
18 MCAQD 13-08-07 South Phoenix (MC/FRM) 04-013-4003 160 33 mph Monsoon Storm
MCAQD 13-08-07 South Phoenix (MC/TEOM) 04-013-4003 159 33 mph Monsoon Storm
19 MCAQD 16-08-07 Higley (MC/TEOM) 04-013-4006 195 45 mph Monsoon Storm
MCAQD 16-08-07 West 43rd Ave (MC/TEOM) 04-013-4009 215 45 mph Monsoon Storm
20 MCAQD 23-08-07 Higley (MC/TEOM) 04-013-4006 230 32 mph Monsoon Storm
21 ADEQ 31-08-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 197 41 mph Monsoon Storm
22 ADEQ 05-10-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 320 34 mph Low pressure trough
23 ADEQ 19-10-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 189 Calm Transport from Mexico
24 ADEQ 21-10-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 214 39 mph Frontal system passage
ADEQ 21-10-07 Yuma Courthouse (ADEQ/CO-FRM) 04-027-0004 165 39 mph Frontal system passage
ADEQ 21-10-07 Yuma Courthouse (ADEQ/FRM) 04-027-0004 137 39 mph Frontal system passage
MCAQD 21-10-07 Coyote Lakes (MC/TEOM) 04-013-4014 313 40 mph Frontal system passage
25 MCAQD 24-10-07 Higley (MC/TEOM) 04-013-4006 174 37 mph Strong Pressure Gradient
26 ADEQ 27-10-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 210 Calm Dust from Mexico
27 ADEQ 02-11-07 Nogales PO (ADEQ/FRM) 04-023-0004 191 Calm Dust from Mexico
ADEQ 02-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 211 Calm Dust from Mexico
28 ADEQ 03-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 170 Calm Dust from Mexico
29 ADEQ 04-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 170 Calm Dust from Mexico
30 ADEQ 06-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 186 Calm Dust from Mexico
31 MCAQD 15-11-07 Buckeye (Maricopa Co. [MC]/TEOM) 04-013-4011 166 29 mph Strong Pacific Low Pressure
MCAQD 15-11-07 Durango Complex (MC/TEOM) 04-013-9812 155 29 mph Strong Pacific Low Pressure
32 ADEQ 18-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 167 Calm Dust from Mexico
33 ADEQ 19-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 177 Calm Dust from Mexico
34 ADEQ 28-11-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 167 Calm Dust from Mexico
35 ADEQ 24-12-07 Nogales PO PM2.5 (ADEQ/BAM) 04-023-0004 71.5 Calm Smoke & Dust from Mexico
ADEQ 24-12-07 Nogales Post Office (ADEQ/BAM) 04-023-0004 233 Calm Smoke & Dust from Mexico
  Requested on 5/21/07 under old Policy
no action ADEQ 27-03-07 Yuma Courthouse (ADEQ/BAM) 04-027-0004 349.9 42 mph Frontal passage
ADEQ 27-03-07 Mexico Supersite (ADEQ/BAM) 80-026-8012 446.8 33 mph Frontal passage
MCAQD 27-03-07 West 43rd Ave (MC/TEOM)  04-013-4009 228 33 mph Frontal passage

* Agency

ADEQ: Arizona Department of Environmental Quality
MCAQD: Maricopa County Air Quality Department
PCAQCD: Pinal County Air Quality Control District

** U.S. EPA Air Quality System Identification Number

{LMP Flag}: Value below NAAQS flagged for LMP eligibility
Type Abbreviations: FRM: Federal Reference Method Filter Based Monitor
BAM: Beta-Attenuation Mass Monitor (Continuous monitor)
TEOM: Tapered Element Oscillating Microbalance Monitor (Continuous monitor)

Back