Status of Indiana Air Quality Northwest Indiana Region

Status of Indiana Air Quality Northwest Indiana Region 1

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Concentration (ppm) Carbon Monoxide 1 -Hour CO 2 nd High Values Northwest Indiana 40 35 30 25 20 15 10 5 0 1 -Hour 2 nd High Values 1 -Hour CO Standard (35 ppm) Trendline 2

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Concentration (ppm) Carbon Monoxide 8 -Hour CO 2 nd High Values Northwest Indiana 12 10 8 6 4 2 0 8 -Hour 2 nd High Values 8 -Hour CO Standard (9 ppm) Trendline 3

Lead Highest Annual Quarterly Values Northwest Indiana Concentration (µg/m³) 0. 60 0. 50 0. 40 0. 30 0. 20 0. 10 Lead Values * Lead Standard Lowered to 0. 15 µg/m 3 in 2008. 2005 2000 1995 1990 1985 1980 0. 00 Trendline 4

0. 00 11/07 - 01/08 12/07 - 02/08 01/08 - 03/08 02/08 - 04/08 03/08 - 05/08 04/08 - 06/08 05/08 - 07/08 06/08 - 08/08 07/08 - 09/08 08/08 - 10/08 09/08 - 11/08 10/08 - 12/08 11/08 - 01/09 12/08 - 02/09 01/09 - 03/09 02/09 - 04/09 03/09 - 05/09 04/09 - 06/09 05/09 - 07/09 06/09 - 08/09 07/09 - 09/09 08/09 - 10/09 09/09 - 11/09 10/09 - 12/09 11/09 - 01/10 12/09 - 02/10 01/10 - 03/10 02/10 - 04/10 03/10 - 05/10 04/10 - 06/10 05/10 - 07/10 06/10 - 08/10 07/10 - 09/10 08/10 - 10/10 09/10 - 11/10 10/10 - 12/10 11/10 - 01/11 12/10 - 02/11 01/11 - 03/11 02/11 - 04/11 03/11 - 05/11 04/11 - 06/11 05/11 - 07/11 06/11 - 08/11 07/11 - 09/11 08/11 - 10/11 09/11 - 11/11 10/11 - 12/11 11/11 - 01/12 12/11 - 02/12 01/12 - 03/12 02/12 - 04/12 03/12 - 05/12 04/12 - 06/12 05/12 - 07/12 06/12 - 08/12 07/12 - 09/12 08/12 - 10/12 09/12 - 11/12 10/12 - 12/12 Concentration (µg/m³) Lead Highest Lead Three-Month Rolling Average Value Northwest Indiana 0. 16 0. 14 0. 12 0. 10 0. 08 0. 06 0. 04 0. 02 Lead Three-Month Rolling Values * Lead Standard Lowered to 0. 15 µg/m 3 in 2008 Lead Standard (0. 15 µg/m³) Trendline 5

1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Concentration (ppb) Nitrogen Dioxide Annual Arithmetic Mean NO 2 Values Northwest Indiana 60 50 40 30 20 10 0 Annual Arithmetic Means Annual NO₂ Standard (53 ppb) Trendline 6

Nitrogen Dioxide * 1 -Hour NO 2 Standard Established in 2010. 7

Ozone 1 -Hour Ozone 4 th High Values Northwest Indiana Concentration (ppm) 0. 160 0. 140 0. 120 0. 100 0. 080 0. 060 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 0. 040 1 -Hour Ozone 4 th High Values * 1 -Hour Ozone Standard Revoked in 2005. 1 -Hour Ozone Standard (0. 12 ppm) Trendline 8

Ozone * 8 -Hour Ozone Standard Established in 1997. 9

Changing Particulate Standards Name Total Suspended Particle (TSP) Dates 1970 -1987 1983 -Present 1999 -Present 30 µm 10 µm 2. 5 µm 24 -Hour Standard 260 150 65 (1999 -2005) 35 (2006 -Present) Annual Standard 75 50 15 Regulated Size *µm = micrograms PM 10 PM 2. 5 10

Particulate Matter *Annual TSP Standard Revoked in 1987. 11

Particulate Matter 24 -Hour TSP 2 nd High Values Northwest Indiana Concentration (µg/m³) 350 300 250 200 150 100 50 24 -Hour 2 nd High Values *24 -Hour TSP Standard Revoked in 1987. 24 -Hour TSP Standard (260 µg/m³) 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 0 Trendline 12

Particulate Matter Annual Arithmetic Mean PM 10 Values Northwest Indiana Concentration (µg/m³) 60 50 40 30 20 10 Annual Arithmetic Means Annual PM₁₀ Standard (50 µg/m³) *Annual PM 10 Standard Established in 1987 and Revoked in 2006. 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 0 Trendline 13

Particulate Matter 24 -Hour PM 10 High Values Northwest Indiana Concentration (µg/m³) 350 300 250 200 150 100 50 24 -Hour High Values *24 -Hour PM 10 Standard Established in 1987. 24 -Hour PM₁₀ Standard (150 µg/m³) 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 0 Trendline 14

Particulate Matter Annual Arithmetic Mean PM 2. 5 Values Northwest Indiana 15 10 5 Annual Arithmetic Means Annual PM₂. ₅ Standard (15 µg/m³) 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 0 2000 Concentration (µg/m 3) 20 Trendline 15

Particulate Matter 24 -Hour PM 2. 5 98 th Percentile Values Northwest Indiana 70 50 40 30 20 10 24 -Hour 98 th Percentile Values 2006 24 -Hour PM₂. ₅ Standard (35 µg/m³) 1997 24 -Hour PM₂. ₅ Standard (65 µg/m³) Trendline 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 0 2000 Concentration (µg/m³) 60 16

Sulfur Dioxide Annual Arithmetic Mean SO 2 Values Northwest Indiana 0. 035 Concentration (ppm) 0. 030 0. 025 0. 020 0. 015 0. 010 0. 005 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 0. 000 Annual Arithmetic Means * Annual SO 2 Standard Revoked in 2010. Annual SO₂ Standard (0. 03 ppm) Trendline 17

Sulfur Dioxide * 24 -Hour SO 2 Standard Revoked in 2010. 18

Sulfur Dioxide Highest 1 -Hour SO 2 99 th Percentile Values Northwest Indiana 500 Concentration (ppb) 450 400 350 300 250 200 150 100 50 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 0 1 -Hour 99 th Percentil Values * 1 -Hour SO 2 Standard Established in 2010. 1 -Hour SO₂ Standard (75 ppb) Trendline 19

Air Quality and You • To learn more about your air quality and what you can do to help, visit: Smogwatch. IN. gov • To acquire additional information about air quality in Indiana and IDEM’s role, visit: www. idem. IN. gov 20

Contact Information for IDEM’s Office of Air Quality • To call please dial: (317) 233 -0178 • To write, please use this mailing address: IDEM, Office of Air Quality 100 North Senate Avenue Indianapolis, IN 46204 21