UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

DESIGN VALUE REPORT

Nov. 5, 2015 Report Request ID: 1383886 Report Code: AMP480

Selection Criteria Page 1 User ID:HTC

State County City Site Parameter POC AQCR UAR CBSA CSA EPA Region 51 51 760

161 0024

1004 GEOGRAPHIC SELECTIONS

PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration
DESIGN VALUE 42602

SELECTED OPTIONS

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

AGENCY ROLE Option Type Option Value EXCLUDE REGIONALLY CONCURRED EVENTS

, STREET ADDRESS YES NO PQAO
DATE CRITERIA

2010 Start Date End Date 2014 Tribal Code

APPLICABLE STANDARDS Standard Description NO2 1-hourUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Nitrogen dioxide (NO2) Parts per billion(008) NO2 1-hour Annual 98th Percentile Level: Design Value Year: 2010 REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 100 State Name: Virginia

Site ID STREET ADDRESS | | |Comp. Qtrs 98th Percentile Cert&

Eval |

| | Comp. Qtrs 98th

Percentile Cert&

Eval |

| | Comp. Qtrs 98th PercentileCert&

Eval |

| | Design Value | | | 3-Year 2010 2009 2008

51-161-1004 51-760-0024 HERMAN HORN ELEMENTARY S

158-W, SCIENCE MUSEUM OF 4 4 41.0 57.0 4 4 37.0 53.0 4 4 37.0 52.0 38 54 DV Validity Indicator

Y YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Nitrogen dioxide (NO2) Parts per billion(008) NO2 1-hour Annual 98th Percentile Level: Design Value Year: 2011 REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 100 State Name: Virginia

Site ID STREET ADDRESS | | |Comp. Qtrs 98th Percentile Cert&

Eval |

| | Comp. Qtrs 98th

Percentile Cert&

Eval |

| | Comp. Qtrs 98th PercentileCert&

Eval |

| | Design Value | | | 3-Year 2011 2010 2009

51-161-1004 51-760-0024 HERMAN HORN ELEMENTARY S

158-W, SCIENCE MUSEUM OF 4 4 38.0 46.2 4 4 41.0 57.0 4 4 37.0 53.0 39 52 DV Validity Indicator

Y YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Nitrogen dioxide (NO2) Parts per billion(008) NO2 1-hour Annual 98th Percentile Level: Design Value Year: 2012 REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 100 State Name: Virginia

Site ID STREET ADDRESS | | |Comp. Qtrs 98th Percentile Cert&

Eval |

| | Comp. Qtrs 98th

Percentile Cert&

Eval |

| | Comp. Qtrs 98th PercentileCert&

Eval |

| | Design Value | | | 3-Year 2012 2011 2010

51-161-1004 51-760-0024 HERMAN HORN ELEMENTARY S

158-W, SCIENCE MUSEUM OF 4 4 36.6 50.7 Y

Y 4

4 38.0 46.2 4 4 41.0 57.0 39 51 DV Validity Indicator

Y YUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Nitrogen dioxide (NO2) Parts per billion(008) NO2 1-hour Annual 98th Percentile Level: Design Value Year: 2013 REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 100 State Name: Virginia

Site ID STREET ADDRESS | | |Comp. Qtrs 98th Percentile Cert&

Eval |

| | Comp. Qtrs 98th

Percentile Cert&

Eval |

| | Comp. Qtrs 98th PercentileCert&

Eval |

| | Design Value | | | 3-Year 2013 2012 2011

51-161-1004 51-760-0024 HERMAN HORN ELEMENTARY S

158-W, SCIENCE MUSEUM OF 4 34.7 S 4 4 36.6 50.7 Y

Y 4

4 38.0 46.2 36 48 DV Validity Indicator

Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 

### Pollutant: Standard Units: NAAQS Standard: Statistic: Nitrogen dioxide (NO2) Parts per billion(008) NO2 1-hour Annual 98th Percentile Level: Design Value Year: 2014 REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. 100 State Name: Virginia

Site ID STREET ADDRESS | | |Comp. Qtrs 98th Percentile Cert&

Eval |

| | Comp. Qtrs 98th

Percentile Cert&

Eval |

| | Comp. Qtrs 98th PercentileCert&

Eval |

| | Design Value | | | 3-Year 2014 2013 2012

51-161-1004 51-760-0024 HERMAN HORN ELEMENTARY S

158-W, SCIENCE MUSEUM OF 4 39.1 S 4 34.7 S 4 4 36.6 50.7 Y

Y 37

51 DV Validity Indicator

Y NUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Nov. 5, 2015

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 7 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