Photo taken by Martha Webster Summer 2009

Maine’s 2010 PM2.5 & PM10 Network and 2009 Data Analysis

Martha WebsterSenior Meteorologist

Maine DEP-BAQ17 State House Station

Augusta, ME 04333-0017

Tel: 207-287-8093E-mail: martha.e.webster@maine.gov

• Primary 24hr average set at 35 µg/mPrimary 24hr average set at 35 µg/m33

• Primary annual average is currently 15 µg/mPrimary annual average is currently 15 µg/m33 – Same note as in 2009: DC Circuit court ruled that EPA’s Same note as in 2009: DC Circuit court ruled that EPA’s

determination of annual & secondary standards was determination of annual & secondary standards was deficient. It was remanded to EPA but not revoked. So deficient. It was remanded to EPA but not revoked. So EPA will reconsider the annual standard and it will likely EPA will reconsider the annual standard and it will likely end up lower than 15 but not likely to be lower than 12 end up lower than 15 but not likely to be lower than 12 Current Annual DV for ME is below these levels but a Current Annual DV for ME is below these levels but a revision will likely impact the AQI Good/Moderate break revision will likely impact the AQI Good/Moderate break point because typically ‘Moderate’ begins at the annual point because typically ‘Moderate’ begins at the annual standard. standard.

• AQI in the process of being finalized per previous AQI in the process of being finalized per previous NAAQS rulings. (Proposal breakpoints are as NAAQS rulings. (Proposal breakpoints are as expected for the lower categories.) Will the possible expected for the lower categories.) Will the possible annual revision further delay the AQI? Stay tuned.annual revision further delay the AQI? Stay tuned.

PMPM2.52.5 NAAQS NAAQS

Forecasting IssuesForecasting Issues

• Continue to work to correctly forecast winter Continue to work to correctly forecast winter particle pollution: it seems that each winter is particle pollution: it seems that each winter is different than the one beforedifferent than the one before

• Try to keep in mind when the Western Mtns Try to keep in mind when the Western Mtns region could have higher PM but no TEOM to region could have higher PM but no TEOM to verify.verify.

• The ‘new’ Portland site behaves a little The ‘new’ Portland site behaves a little differently than the previous site even though it differently than the previous site even though it is fairly close. Suspect different orientation is fairly close. Suspect different orientation between the monitor and winds/I-295.between the monitor and winds/I-295.

Significant Harm Level:

•EPA also is proposing to set a Significant Harm Level (SHL) for PM2.5 equal to the proposed AQI value of 500, which is 500 μg/m3. Areas rarely reach PM concentrations of this level.

•An SHL is an important factor in designing air pollution Emergency Episode Plans, which are required for certain areas of the country.

AQI Category Index ValuesPM2.5 24-hour (μg/m3)

Current Proposed

Good 0 - 50 0.0 - 15.4 No change

Moderate 51 - 100 15.5 - 40.4 15.5 - 35.4

Unhealthy for Sensitive Groups

101 - 150 40.5 - 65.4 35.5 - 55.4

Unhealthy 151 - 200 65.5 - 150.4 55.5 - 150.4

Very Unhealthy 201 - 300 150.5 - 250.4 No change

Hazardous 301 – 400 250.5 – 350.4 No Change

401 – 500Used for Emergency

Planning Only

350.5 - 500 No Change

PM2.5 2009 Data

2009 24-HR BLOCK AVERAGE FRM and FRM-LIKE TEOM DATA PLOTS

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

42

44

1/1/

2009

1/11

/200

9

1/21

/200

9

1/31

/200

9

2/10

/200

9

2/20

/200

9

3/2/

2009

3/12

/200

9

3/22

/200

9

4/1/

2009

4/11

/200

9

4/21

/200

9

5/1/

2009

5/11

/200

9

5/21

/200

9

5/31

/200

9

6/10

/200

9

6/20

/200

9

6/30

/200

9

7/10

/200

9

7/20

/200

9

7/30

/200

9

8/9/

2009

8/19

/200

9

8/29

/200

9

9/8/

2009

9/18

/200

9

9/28

/200

9

10/8

/200

9

10/1

8/20

09

10/2

8/20

09

11/7

/200

9

11/1

7/20

09

11/2

7/20

09

12/7

/200

9

12/1

7/20

09

12/2

7/20

09

24-H

R B

LO

CK

AV

ER

AG

E P

M2.

5 C

ON

CE

NT

RA

TIO

N (

µg/m

³)

MAX TEOM MAX FRM MOD AQI EPA USG AQI MEDEP USG AQI

GOOD AQI

Unhealthy for Sensitive Groups AIR

QUALITY INDEX

MODERATE AIR QUALITY INDEX

Created by Tom Downs, Maine DEP-BAQ - 1/4/2010

2009 PM2.5 Block 24hr Ave TEOM Data

-10

-5

0

5

10

15

20

25

30

35

40

1/1/

09

1/16

/09

1/31

/09

2/15

/09

3/2/

09

3/17

/09

4/1/

09

4/16

/09

5/1/

09

5/16

/09

5/31

/09

6/15

/09

6/30

/09

7/15

/09

7/30

/09

8/14

/09

8/29

/09

9/13

/09

9/28

/09

10/1

3/09

10/2

8/09

11/1

2/09

11/2

7/09

12/1

2/09

12/2

7/09

PM

2.5

in m

icro

gra

ms

per

cu

bic

met

er

L/A TEOM PORT TEOM BGR TEOM MCF TEOM SPYK TEOM

GVL TEOM MCMAC TEOM MOD AQI MEDEP USG AQI

Created by Martha Webster, MEDEP 2/1/2010

Data is preliminary

2002-2009 PM2.5 24-hr BLOCK AVERAGE TRENDS (15-day moving average)(using DAILY MAXIMUM of Portland, Bangor, Lewiston and McFarland Hill Data)

0

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

32

34

36

1-D

ec11

-Dec

21-D

ec31

-Dec

10-J

an20

-Jan

30-J

an9-

Feb

19-F

eb29

-Feb

10-M

ar20

-Mar

30-M

ar9-

Apr

19-A

pr29

-Apr

9-M

ay19

-May

29-M

ay8-

Jun

18-J

un28

-Jun

8-Ju

l18

-Jul

28-J

ul7-

Aug

17-A

ug27

-Aug

6-S

ep16

-Sep

26-S

ep6-

Oct

16-O

ct26

-Oct

5-N

ov15

-Nov

25-N

ov5-

Dec

15-D

ec25

-Dec

4-Ja

n14

-Jan

24-J

an

24-H

R B

LO

CK

AV

ER

AG

E P

M2.

5 C

ON

CE

NT

RA

TIO

N (

µg/m

³)

MOD AQI 2003 TREND 2002 TREND 2005 TREND 2006 TREND

2004 TREND 2007 TREND 2008 TREND 2009 TREND

Created by Tom Downs, Maine DEP-BAQ - 1/4/2010

year - fires / hectares 2002 - 803 / 232,443.0

2003 - 627/ 9,047.8 2004 - 300 / 258.4

2005 - 1258 / 386,671.3 2006 - 623 / 13,768.1

2007 - 892 / 278,033.4 2008 - 189 / 132.7

2009 - 430 / 20140.5

EASTERN CANADA WILDFIRE HECTARES (2.471 acres)

2002-2010 PM2.5 24-hr BLOCK AVERAGE TRENDS (15-day moving average)(using DAILY MAXIMUM of Portland, Bangor, Lewiston and McFarland Hill Data)

0

2

4

6

8

10

12

14

16

18

20

22

24

26

1-De

c11

-Dec

21-D

ec31

-Dec

10-J

an20

-Jan

30-J

an9-

Feb

19-F

eb29

-Feb

10-M

ar20

-Mar

30-M

ar9-

Apr

19-A

pr29

-Apr

9-M

ay19

-May

29-M

ay8-

Jun

18-J

un28

-Jun

8-Ju

l18

-Jul

28-J

ul7-

Aug

17-A

ug27

-Aug

6-Se

p16

-Sep

26-S

ep6-

Oct

16-O

ct26

-Oct

5-No

v15

-Nov

25-N

ov5-

Dec

15-D

ec25

-Dec

4-Ja

n14

-Jan

24-J

an

24-H

R BL

OCK

AVE

RAG

E PM

2.5

CO

NCEN

TRAT

ION

(µg

/m³)

MOD AQI MAX ALL FRM&TEOM 2010 2003 TREND2002 TREND 2005 TREND 2006 TREND2004 TREND 2007 TREND 2008 TREND2009 TREND 2010 TREND

Created by Tom Downs, Maine DEP-BAQ - 2/18/2010

PM2.5 Monitoring Network

PM10

PMPM1010: aka Coarse Particles: aka Coarse Particles• PMPM1010 NAAQS is 24 hr average of 150 NAAQS is 24 hr average of 150µg/mµg/m33 not to not to

be exceeded more than once a year averaged over be exceeded more than once a year averaged over 3 years.3 years.

• There is one continuous TEOM for PMThere is one continuous TEOM for PM1010 in the state in the state located in Presque Islelocated in Presque Isle

• Higher levels tend to be in late winter and early Higher levels tend to be in late winter and early springspring

• Continue to place a mention of ‘coarse particle’ Continue to place a mention of ‘coarse particle’ levels in the Status Notes during winter and in the levels in the Status Notes during winter and in the Daily AQ Forecast discussion when windy Daily AQ Forecast discussion when windy conditions are expected. This is not an ‘official conditions are expected. This is not an ‘official forecast’ just a note that winds could cause sand & forecast’ just a note that winds could cause sand & salt to swirl around near roads and parking lots.salt to swirl around near roads and parking lots.

1/1/2006 - 1/27/2010 PM10 FRM + TEOM AIR QUALITY INDEX VALUES IN MAINE(2009-10 data are preliminary)

0

50

100

150

200

1/1/

2006

3/1/

2006

5/1/

2006

7/1/

2006

9/1/

2006

11/1

/200

6

1/1/

2007

3/1/

2007

5/1/

2007

7/1/

2007

9/1/

2007

11/1

/200

7

1/1/

2008

3/1/

2008

5/1/

2008

7/1/

2008

9/1/

2008

11/1

/200

8

1/1/

2009

3/1/

2009

5/1/

2009

7/1/

2009

9/1/

2009

11/1

/200

9

1/1/

2010

Air Q

ualit

y In

dex

UNHEALTHY

UNHEALTHY for SENSITIVE GROUPS

MODERATE

GOOD

Created by Tom Downs, Maine DEP-BAQ - 1/28/2010

2006 through 2009 AQI Comparison PM10 TEOM & MAX FRM (2009 data is preliminary)

0

10

20

30

40

50

60

70

80

90

100

110

1201/

1/20

06

3/1/

2006

5/1/

2006

7/1/

2006

9/1/

2006

11/1

/200

6

1/1/

2007

3/1/

2007

5/1/

2007

7/1/

2007

9/1/

2007

11/1

/200

7

1/1/

2008

3/1/

2008

5/1/

2008

7/1/

2008

9/1/

2008

11/1

/200

8

1/1/

2009

3/1/

2009

5/1/

2009

7/1/

2009

9/1/

2009

11/1

/200

9

1/1/

2010

PM10 FRM PM10 TEOM (24-hr block avg)

Created by Martha Webster, MEDEP 2/1/2010

AQI Values

Jan to Mar 2009 PM10 FRM 24hr AQI by region with TEOM Daily AQI

0

10

20

30

40

50

60

70

80

90

10020

0901

0120

0901

0320

0901

0520

0901

0720

0901

0920

0901

1120

0901

1320

0901

1520

0901

1720

0901

1920

0901

2120

0901

2320

0901

2520

0901

2720

0901

2920

0901

3120

0902

0220

0902

0420

0902

0620

0902

0820

0902

1020

0902

1220

0902

1420

0902

1620

0902

1820

0902

2020

0902

2220

0902

2420

0902

2620

0902

2820

0903

0220

0903

0420

0903

0620

0903

0820

0903

1020

0903

1220

0903

1420

0903

1620

0903

1820

0903

2020

0903

2220

0903

2420

0903

2620

0903

2820

0903

30

SW COAST W INTERIOR E INTERIOR NORTHERN FRM NORTHERN TEOM

Created by Martha Webster, MEDEP 2/18/2010

2009 Data is preliminary

March 10-26, 2009 Wind Data

Boxes indicate High Madawaska PM102009 Data is preliminary

PM10 Monitoring Network