UNITED STATES ENVIRONMENTAL PROTECTION AGENCY DESIGN VALUE REPORT Apr. 30, 2015 Report Request ID: 1329221 Report Code: AMP480

Selection Criteria Page 1 User ID: JWV

State County City Site Parameter POC AQCR UAR CBSA CSA EPA Region 06 051 0001 GEOGRAPHIC SELECTIONS

PROTOCOL SELECTIONS Parameter Classification Parameter Method Duration DESIGN VALUE 81102

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 2009 Start Date End Date 2014 Tribal Code

APPLICABLE STANDARDS Standard Description PM10 24-hour 2006UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8UNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2009 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2009 2008 2007 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 0 4

4 0

0 4

1 N N 0 4 0 0 Y N * Count Quarter Exceedances 0

0 Quarter Count Exceedances 0

0 Count #Comp Exceedances 0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2010 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2010 2009 2008 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 0 4

4 0

0 4

4 0

0 4

1 N N 0

0 Y N * Count Quarter Exceedances 0

0 Quarter Count Exceedances 0

0 Count #Comp Exceedances 0

0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2011 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2011 2010 2009 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 0 4

4 0

0 4

4 0

0 4

4 0 0 Y Y Count Quarter Exceedances 0

0 Quarter Count Exceedances 0

0 Count #Comp Exceedances 0

0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2012 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2012 2011 2010 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 0 4

3 S 0

0 4

4 0

0 4

4 0 0 Y N * Count Quarter Exceedances 0

0 Quarter Count Exceedances 0

0 Count #Comp Exceedances 0

0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2013 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2013 2012 2011 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 2 4

4 0

0 4

3 S 0

0 4

4 0 0.7 Y

N * Count Quarter Exceedances 0

2 Quarter Count Exceedances 0

0 Count #Comp Exceedances 0

0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 8 

### Pollutant: Standard Units: NAAQS Standard: Statistic: PM10 Total 0-10um STP(81102) Design Value Year: 2014 Micrograms/cubic meter (25 C)(001) PM10 24-hour 2006 Annual Estimated Days > Standard REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS. Level: 150 State Name: California Site ID POC STREET ADDRESS | | | Estimated #Comp Cert& Eval | | | Estimated #Comp Cert& Eval | | | Estimated Quarter Cert& Eval | | | Estimated Exceedances Validity

Ind. 2014 2013 2012 06-051-0001 06-051-0001 5

6 GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES GATEWAY HC., Corner of Old Mammoth Road and HWY 203, MAMMOTH LAKES 0 0 4

4 0

2 4

4 0

0 4

3 S 0 0.7 Y

N * Count Quarter Exceedances 0

0 Quarter Count Exceedances 0

2 Count #Comp Exceedances 0

0 3 - YearUNITED STATES ENVIRONMENTAL PROTECTION AGENCY AIR QUALITY SYSTEM PRELIMINARY DESIGN VALUE REPORT Report Date: Apr. 30, 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 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