UNITED STATES ENVIRONMENTAL PROTECTION AGENCY DESIGN VALUE REPORT Oct. 20, 2011 Report Request ID: 921152 Report Code: AMP480

Selection Criteria Page 1 User ID: HXN

State County City

Site Parameter POC AQCR UAR CBSA CSA EPA Region Method Duration Begin Date End Date 24 24 24 24 24 24 24 24 003

005 005 025 510 510 510 510 1003

1007 3001 1001 0006 0007 0008 0035 GEOGRAPHIC SELECTIONS

PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration 88101 SELECTED OPTIONS

USER SITE METADATA MERGE PDF FILES QUARTERLY DATA IN WORKFILE WORKFILE DELIMITER SINGLE EVENT PROCESSING Option Type Option Value STREET ADDRESS YES NO

, EXCLUDE REGIONALLY CONCURRED EVENTS GLOBAL DATES

2009 Start Date End Date 2011 Tribal Code

APPLICABLE STANDARDS Standard Description PM25 24-hour 2006 PM25 Annual 2006UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Oct. 20, 2011

Notes: 1. Warning: Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 1 of 4UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Oct. 20, 2011

Notes: 1. Warning: Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 2 of 4 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Statistic: Site-LevelPM2.5 - Local Conditions(88101) Micrograms/cubic meter (LC)(105) PM25 24-hour 2006 / PM25 Annual 2006 Annual Weighted Mean Annual 98th Percentile Level: Level: Design Value Year: 2009

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 15 35 State Name: Maryland Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert. | | | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2009 2008 2007

24-003-1003 24-005-1007 24-005-3001 24-025-1001 24-510-0006 24-510-0007 24-510-0008 ANNE ARUNDEL CO. PUBLIC WORKS BLDG. 7409 BALTIMORE ANNAPOLIS BLVD. Padonia Elementary School, 9834 Greenside Drive 600 Dorsey Avenue Edgewood Chemical Biological Center (APG), Waehli Road Northeast Police Station, 1900 Argonne Drive Northwest Police Station, 5271 Reistertown Road Baltimore City Fire Dept.-Truck Company 20; 5714 Eastern Avenue , Baltimore, Maryland 21224 330 121 344 114 118 342 111 4

4 4 4 4 4 4 25.2 22.1 30.8 21.5 22.5 24.0 27.6 11.1

10.2 11.0 9.6 10.1 10.3 11.1 N

N N N N N N 117 112 333 109 119 114 110 4

4 4 4 4 4 4 34.4 30.7 29.8 28.1 33.4 30.7 32.7 12.6

11.9 12.6 11.3 12.2 12.4 12.7 Y

Y Y Y Y Y Y 110 119 334 111 113 116 118 3

4 4 4 4 4 4 34.8 31.5 34.2 29.2 32.7 34.3 36.3 * 13.4

13.3 14.0 12.2 13.1 13.4 15.0 * N

N N N N N N 31

28 32 26 30 30 32 N Y Y Y Y Y Y 12.4 11.8 12.6 11.0 11.8 12.0 12.9 N

Y Y Y Y Y YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Oct. 20, 2011

Notes: 1. Warning: Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 3 of 4 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Statistic: Site-LevelPM2.5 - Local Conditions(88101) Micrograms/cubic meter (LC)(105) PM25 24-hour 2006 / PM25 Annual 2006 Annual Weighted Mean Annual 98th Percentile Level: Level: Design Value Year: 2010

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 15 35 State Name: Maryland Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert. | | | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2010 2009 2008

24-003-1003 24-005-1007 24-005-3001 24-025-1001 24-510-0006 24-510-0007 24-510-0008 ANNE ARUNDEL CO. PUBLIC WORKS BLDG. 7409 BALTIMORE ANNAPOLIS BLVD. Padonia Elementary School, 9834 Greenside Drive 600 Dorsey Avenue Edgewood Chemical Biological Center (APG), Waehli Road Northeast Police Station, 1900 Argonne Drive Northwest Police Station, 5271 Reistertown Road Baltimore City Fire Dept.-Truck Company 20; 5714 Eastern Avenue , Baltimore, Maryland 21224 352 121 109 110 117 109 319 4

4 4 4 4 4 3 27.5 21.1 28.6 21.6 21.5 21.5 29.4 * 11.0

10.4 11.6 9.5 10.1 10.3 11.0 * N

N N N N N N 330 121 344 114 118 342 111 4

4 4 4 4 4 4 25.2 22.1 30.8 21.5 22.5 24.0 27.6 11.1

10.2 11.0 9.6 10.1 10.3 11.1 N

N N N N N N 117 112 333 109 119 114 110 4

4 4 4 4 4 4 34.4 30.7 29.8 28.1 33.4 30.7 32.7 12.6

11.9 12.6 11.3 12.2 12.4 12.7 Y

Y Y Y Y Y Y 29

25 30 24 26 25 30 Y Y Y Y Y Y N 11.6 10.8 11.7 10.1 10.8 11.0 11.6 Y

Y Y Y Y Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Oct. 20, 2011

Notes: 1. Warning: Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 4 of 4 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Statistic: Site-LevelPM2.5 - Local Conditions(88101) Micrograms/cubic meter (LC)(105) PM25 24-hour 2006 / PM25 Annual 2006 Annual Weighted Mean Annual 98th Percentile Level: Level: Design Value Year: 2011

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 15 35 State Name: Maryland Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert. | | | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Cred. Days Comp. Qrtrs 98th Perctil Wtd.

Mean Cert. |

| | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2011 2010 2009

24-003-1003 24-005-1007 24-005-3001 24-025-1001 24-510-0006 24-510-0007 24-510-0008 ANNE ARUNDEL CO. PUBLIC WORKS BLDG. 7409 BALTIMORE ANNAPOLIS BLVD. Padonia Elementary School, 9834 Greenside Drive 600 Dorsey Avenue Edgewood Chemical Biological Center (APG), Waehli Road Northeast Police Station, 1900 Argonne Drive Northwest Police Station, 5271 Reistertown Road Baltimore City Fire Dept.-Truck Company 20; 5714 Eastern Avenue , Baltimore, Maryland 21224 54 50 56 53 56 57 53 2

1 2 2 2 2 2 24.7 28.6 26.6 24.5 25.2 24.2 27.4 *

*

*

*

*

*

* 10.5 9.9 10.6 9.3 9.9 9.5 10.8 *

*

*

*

*

*

* N N N N N N N 352 121 109 110 117 109 319 4

4 4 4 4 4 3 27.5 21.1 28.6 21.6 21.5 21.5 29.4 * 11.0

10.4 11.6 9.5 10.1 10.3 11.0 * N

N N N N N N 330 121 344 114 118 342 111 4

4 4 4 4 4 4 25.2 22.1 30.8 21.5 22.5 24.0 27.6 11.1

10.2 11.0 9.6 10.1 10.3 11.1 N

N N N N N N 26

24 29 23 23 23 28 N N N N N N N 10.9 10.1 11.1 9.5 10.0 10.0 11.0 N

N N N N N N