UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

DESIGN VALUE REPORT

Report Request ID: 1235881 Report Code: AMP480 Jul. 23, 2014

Selection Criteria Page 1

User ID: YGX

State County City Site Parameter POC AQCR UAR CBSA CSA

EPA

Region

06 045

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

AGENCY ROLE

Option Type Option Value

EXCLUDE REGIONALLY CONCURRED EVENTS

,

STREET ADDRESS

YES

NO

PQAO

DATE CRITERIA

2000

Start Date End Date

2013

Tribal

Code

APPLICABLE STANDARDS

Standard Description

PM25 24-hour 2013

PM25 Annual 2013
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2000

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2000 1999 1998

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

57 3 18.7* 7.2* 57 4 26.2 8.9 0 0 * * 22 N 8.0 N
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2001

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2001 2000 1999

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

57 4 27.0 8.0 57 3 18.7* 7.2 * 57 4 26.2 8.9 24 Y 8.0 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2002

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2002 2001 2000

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

61 4 39.7 9.1 Y 57 4 27.0 8.0 57 3 18.7* 7.2* 28 Y 8.1 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2003

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2003 2002 2001

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

60 4 15.2 7.4 N 61 4 39.7 9.1 Y 57 4 27.0 8.0 27 Y 8.1 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2004

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2004 2003 2002

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

60 4 14.4 7.0 N 60 4 15.2 7.4 N 61 4 39.7 9.1 Y 23 Y 7.8 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2005

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2005 2004 2003

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

61 4 15.2 6.2 N 60 4 14.4 7.0 N 60 4 15.2 7.4 N 15 Y 6.8 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2006

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2006 2005 2004

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

60 4 17.4 6.8 61 4 15.2 6.2 N 60 4 14.4 7.0 N 16 Y 6.7 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 9 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2007

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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 2007 2006 2005

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

60 4 13.3 4.7 60 4 17.4 6.8 61 4 15.2 6.2 N 15 Y 5.9 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 10 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2008

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

105 N MAIN ST, UKIAH, CA 95482

61 4 31.0 7.9 60 4 13.3 4.7 60 4 17.4 6.8 21 Y 6.5 Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 11 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2009

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

06-045-2001

06-045-2002

105 N MAIN ST, UKIAH, CA 95482

FIRE STN-COMMERCIAL & HUMBOLDT, WILLITS

WILLITS JUSTICE CENTER, 125 EAST COMMERCIAL STREET, WILLITS, CA 95490

332

217

108

3

2

1

 19.6

 22.7

 30.8

*

*

*

 11.6

 14.1

 10.2

*

*

*

61

0

0

4

0

0

 31.0

*

*

 7.9 

*

*

60

0

0

4

0

0

 13.3 

*

*

 4.7 

*

*

 21

 23

 31

Y

N

N

 8.1

 14.1

 10.2

Y

N

N
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 12 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2010

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

06-045-2001

06-045-2002

105 N MAIN ST, UKIAH, CA 95482

FIRE STN-COMMERCIAL & HUMBOLDT, WILLITS

WILLITS JUSTICE CENTER, 125 EAST COMMERCIAL STREET, WILLITS, CA 95490

360

0

352

4

0

4

 14.0

 17.8

*

 6.5

 7.7

*

332

217

108

3

2

1

 19.6

 22.7

 30.8

*

*

*

 11.6

 14.1

 10.2

*

*

*

61

0

0

4

0

0

 31.0 

*

*

 7.9 

*

*

 22

 23

 24

Y

N

N

 8.7

 14.1

 8.9

Y

N

N
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 13 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2011

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

06-045-2001

06-045-2002

105 N MAIN ST, UKIAH, CA 95482

FIRE STN-COMMERCIAL & HUMBOLDT, WILLITS

WILLITS JUSTICE CENTER, 125 EAST COMMERCIAL STREET, WILLITS, CA 95490

356

0

352

4

0

4

 15.4

 20.8

*

 7.6

 9.8

*

360

0

352

4

0

4

 14.0

 17.8

*

 6.5

 7.7

*

332

217

108

3

2

1

 19.6

 22.7

 30.8

*

*

*

 11.6

 14.1

 10.2

*

*

*

 16

 23

 23

Y

N

N

 8.6

 14.1

 9.2

Y

N

N
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 14 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2012

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

06-045-2002

105 N MAIN ST, UKIAH, CA 95482

WILLITS JUSTICE CENTER, 125 EAST COMMERCIAL STREET, WILLITS, CA 95490

290

349

3

4

 15.4

 19.1

* 4.9

 7.2

* S

S

356

352

4

4

 15.4

 20.8

 7.6

 9.8

360

352

4

4

 14.0

 17.8

 6.5

 7.7

 15

 19

N

Y

 6.3

 8.2

N

Y
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 15 of 16

Pollutant:

Standard Units:

NAAQS Standard:

Statistic:

Statistic:

Site-LevelPM2.5 - Local Conditions(88101)

Micrograms/cubic meter (LC)(105)

PM25 24-hour 2013 / PM25 Annual 2013

Annual Weighted Mean

Annual 98th Percentile

Level:

Level:

Design Value Year: 2013

REPORT EXCLUDES MEASUREMENTS WITH REGIONALLY CONCURRED EVENT FLAGS.

12

35 State Name: California

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

06-045-0006

06-045-2002

105 N MAIN ST, UKIAH, CA 95482

WILLITS JUSTICE CENTER, 125 EAST COMMERCIAL STREET, WILLITS, CA 95490

85

163

1

1

 17.5

 23.0

*

*

 7.6

 9.3

*

*

S

S

290

349

3

4

 15.4

 19.1

* 4.9

 7.2

* S

S

356

352

4

4

 15.4

 20.8

 7.6

 9.8

 16

 21

N

N

 6.7

 8.8

N

N
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR QUALITY SYSTEM

PRELIMINARY DESIGN VALUE REPORT

Report Date: Jul. 23, 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 16 of 16

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