UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

DESIGN VALUE REPORT Jan. 8, 2014 Report Request ID: 1163227 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 51 51 51 510

107 059 0009

1005 0030 GEOGRAPHIC SELECTIONS

PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration DESIGN VALUE 88101

SELECTED OPTIONS

SINGLE EVENT PROCESSING WORKFILE DELIMITER USER SITE METADATA MERGE PDF FILES QUARTERLY DATA IN WORKFILE

Option Type Option Value EXCLUDE REGIONALLY CONCURRED EVENTS

, STREET ADDRESS YES NO GLOBAL DATES

2008 Start Date End Date 2013 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: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 1 of 8UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 2 of 8 

### 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: 2008

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

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2008 2007 2006

51-059-0030 51-107-1005 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 347 118 4

4 28.4 23.9 11.1

11.5 330

110 4

4 31.9 27.7 12.5

12.8 334

114 4

4 33.9 32.8 12.7

12.2 Y

Y 31

28 Y Y 12.1 12.2 Y

YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 3 of 8 

### 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: Virginia Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2009 2008 2007

51-059-0030 51-107-1005 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 347 120 4

4 24.2 20.0 9.8

9.2 347

118 4

4 28.4 23.9 11.1

11.5 330

110 4

4 31.9 27.7 12.5

12.8 28 24 Y Y 11.1 11.2 Y

YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 4 of 8 

### 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: Virginia Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2010 2009 2008

51-059-0030 51-107-1005 51-510-0009 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 517 N SAINT ASAPH ST, ALEXANDRIA HEALTH 358 117 116 4

4 4 23.7 19.6 24.0 9.9

10.3 11.3 347

120 4

4 24.2 20.0 9.8

9.2

* 347

118 4

4 28.4 23.9 11.1

11.5

* 25 21 24 Y Y N 10.3 10.3 11.3 Y

Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 5 of 8 

### 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: Virginia Site_ID / STREET ADDRESS | | | Cred. Days Comp. Qrtrs Wtd.

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2011 2010 2009

51-059-0030 51-107-1005 51-510-0009 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 517 N SAINT ASAPH ST, ALEXANDRIA HEALTH 353 118 112 4

4 4 24.1 20.5 22.4 9.2

9.1 10.2 358

117 116 4

4 4 23.7 19.6 24.0 9.9

10.3 11.3 347

120 4

4 24.2 20.0 9.8

9.2

* 24

20 23 Y Y N 9.6

9.5 10.7 Y

Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 6 of 8 

### 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: 2012

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

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2012 2011 2010

51-059-0030 51-107-1005 51-510-0009 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 517 N SAINT ASAPH ST, ALEXANDRIA HEALTH 346 111 2 4

4 1 21.1 20.6 11.9 * 8.7

9.0 9.4 * 353

118 112 4

4 4 24.1 20.5 22.4 9.2

9.1 10.2 358

117 116 4

4 4 23.7 19.6 24.0 9.9

10.3 11.3 23 20 19 Y Y N 9.3

9.5 10.3 Y

Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 7 of 8 

### 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: 2013

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

Mean 98th Perctil Cert&

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

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

Mean Cert&

Eval | | | Design Value Valid

Ind. | | | Design Value Valid

Ind. 24-Hour Annual 2013 2012 2011

51-059-0030 51-107-1005 51-510-0009 STA. 46-B9, LEE PARK, TELEGRAPH ROAD 38-I, BROAD RUN HIGH SCHOOL, ASHBURN 517 N SAINT ASAPH ST, ALEXANDRIA HEALTH 325 102 3

3 19.5 19.8 *

* 8.1 8.3 *

*

* 346

111 2 4

4 1 21.1 20.6 11.9 * 8.7

9.0 9.4 * 353

118 112 4

4 4 24.1 20.5 22.4 9.2

9.1 10.2 22 20 17 N N N 8.7

8.8 9.8 N N NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Jan. 8, 2014

Notes: 1. Computed design values are a snapshot of the data at the time the report was run (may not be all data for year). 2. Some PM2.5 24-hour DVs for incomplete data that are marked invalid here may be marked valid in the Official report due to additional analysis. 3. Annual Values not meeting completeness criteria are marked with an asterisk ('*'). Page 8 of 8 M

N

S

U

X

Y The monitoring organization has revised data from this monitor since the

most recent certification letter received from the state. The certifying agency has submitted the certification letter and required summary reports, but the certifying agency and/or EPA has determined that issues regarding the quality of the ambient concentration data cannot be resolved due to data completeness, the lack of performed quality assurance checks or the results of uncertainty statistics shown in the AMP255 report or the certification and quality assurance report. The certifying agency has submitted the certification letter and required summary reports. A value of "S" conveys no Regional assessment regarding data quality per se. This flag will remain until the Region provides an "N" or "Y" concurrence flag. Uncertified. The certifying agency did not submit a required certification letter and summary reports for this monitor even though the due date has passed, or the state's certification letter specifically did not apply the certification to this monitor. Certification is not required by 40 CFR 58.15 and no conditions apply to be the basis for assigning another flag value The certifying agency has submitted a certification letter, and EPA has no unresolved reservations about data quality (after reviewing the letter, the attached summary reports, the amount of quality assurance data submitted to AQS, the quality statistics, and the highest reported concentrations). MEANING CERTIFICATION EVALUATION AND CONCURRENCE FLAG MEANINGS

FLAG