261630001 260270003 260210014 261630019 260810022 260490021 260190003 260810020 260630007 260050003

Allen Park Cassopolis Coloma East Seven Mile Evans Flint Frankfort Grand Rapids Harbor Beach Holland

Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable

95 ppb 86 ppb 85 ppb 76 ppb 89 ppb 91 ppb 86 ppb 92 ppb 92 ppb 78 ppb

Value, 

ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date

84 6/7/11 87 9/2/11 96 9/1/11 88 6/7/11 81 6/8/11 84 7/1/11 83 6/7/11 86 7/20/11 78 6/7/11 98 6/8/11

80 7/1/11 85 9/1/11 91 6/7/11 87 9/1/11 80 6/7/11 77 6/6/11 80 7/20/11 81 6/8/11 72 7/1/11 96 6/7/11

79 7/19/11 85 7/21/11 86 6/8/11 84 7/19/11 79 7/20/11 74 6/8/11 73 7/16/11 79 7/16/11 71 7/16/11 96 7/20/11

74 9/1/11 81 7/17/11 82 7/20/11 83 7/1/11 77 7/16/11 73 6/7/11 71 6/6/11 78 6/7/11 70 7/17/11 87 9/1/11

71 6/8/11 77 7/16/11 80 9/2/11 79 6/8/11 75 7/17/11 73 7/16/11 70 7/10/11 75 7/17/11 65 6/8/11 82 9/2/11

71 7/10/11 76 7/18/11 79 7/16/11 79 7/17/11 73 6/6/11 71 7/31/11 69 6/8/11 70 6/6/11 61 7/20/11 82 7/17/11

69 6/6/11 73 7/31/11 77 7/17/11 78 7/10/11 67 7/10/11 69 6/4/11 69 8/17/11 68 7/10/11 61 8/13/11 77 7/10/11

69 7/17/11 72 7/8/11 77 7/21/11 77 9/3/11 63 7/24/11 69 7/17/11 67 6/3/11 67 9/1/11 60 6/4/11 77 7/16/11

67 6/18/11 72 9/3/11 75 7/11/11 76 9/2/11 63 6/3/11 68 5/21/11 64 9/1/11 65 9/2/11 75 7/11/11

66 7/5/11 71 6/7/11 75 6/4/11 75 6/30/11 62 6/5/11 68 5/12/11 63 5/22/11 64 6/19/11 71 8/24/11

66 8/13/11 70 6/18/11 72 7/18/11 73 6/6/11 62 6/18/11 66 6/21/11 62 5/12/11 62 6/18/11 70 8/17/11

64 7/24/11 70 6/30/11 67 6/4/11 73 6/4/11 61 5/12/11 66 9/2/11 62 7/17/11 61 7/18/11 69 7/18/11

63 6/30/11 69 6/17/11 66 6/6/11 72 7/20/11 61 5/13/11 65 9/1/11 61 9/2/11 61 7/24/11 67 6/6/11

63 7/8/11 67 7/2/11 66 7/8/11 71 6/5/11 61 7/21/11 65 9/3/11 60 5/30/11 60 6/5/11 67 6/27/11

62 7/2/11 67 6/8/11 65 7/10/11 70 6/18/11 60 5/22/11 64 5/13/11 60 7/11/11 67 7/28/11

62 7/21/11 66 7/5/11 65 6/5/11 70 7/22/11 60 6/1/11 64 7/20/11 65 6/18/11

61 6/17/11 66 7/10/11 65 6/17/11 70 7/24/11 60 6/19/11 63 5/11/11 65 6/19/11

61 7/4/11 66 7/11/11 65 7/23/11 70 7/31/11 62 6/3/11 65 7/2/11

61 7/20/11 64 6/5/11 65 8/24/11 71 8/19/11 62 8/31/11 65 7/5/11

61 9/3/11 64 6/4/11 64 6/27/11 69 7/23/11 61 7/2/11 64 6/5/11

64 7/15/11 64 8/17/11 69 7/2/11 61 7/10/11 64 7/15/11

63 6/6/11 63 7/31/11 69 8/13/11 61 7/21/11 64 7/21/11

63 7/20/11 63 6/3/11 66 7/5/11 60 6/5/11 64 7/31/11

63 8/31/11 63 6/18/11 66 7/21/11 60 6/19/11 64 8/2/11

61 6/26/11 63 7/5/11 65 7/30/11 60 7/15/11 62 6/4/11

61 8/17/11 63 7/15/11 63 7/3/11 62 6/4/11

60 8/2/11 62 9/3/11 63 6/17/11 62 6/3/11

61 5/23/11 62 5/20/11 62 9/3/11

61 8/2/11 62 5/12/11 61 6/1/11

60 6/1/11 62 5/29/11 61 7/8/11

60 7/28/11 62 7/4/11 61 7/24/11

62 7/16/11 60 5/22/11

62 8/12/11 60 6/30/11

62 8/17/11

61 5/13/11

60 6/1/11

60 6/27/11

60 7/8/11

60 7/18/11

261130001 261390005 260770008 260650012 261010922 261210039 260990009 261250001 260492001 261470005

Houghton Lake Jenison Kalamazoo Lansing Manistee (tribal) Muskegon New Haven Oak Park Otisville Port Huron

Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable

97 ppb 85 ppb 89 ppb 93 ppb 91 ppb 77 ppb 78 ppb 81 ppb 92 ppb 80 ppb

Value, 

ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, 

ppb Date Value, ppb Date Value, ppb Date

77 6/7/11 87 6/8/11 80 9/2/11 77 7/16/11 90 6/7/11 104 6/7/11 88 9/1/11 87 7/1/11 85 7/1/11 88 6/7/11

74 6/8/11 85 6/7/11 76 7/17/11 72 6/7/11 84 7/20/11 91 7/20/11 85 6/7/11 81 7/17/11 79 6/6/11 81 7/20/11

67 6/6/11 85 7/20/11 74 7/16/11 72 6/8/11 79 6/6/11 89 6/8/11 82 9/3/11 79 6/5/11 78 5/12/11 77 6/4/11

67 7/16/11 78 7/17/11 74 6/8/11 70 9/1/11 72 7/10/11 77 9/1/11 78 7/1/11 78 6/7/11 74 6/8/11 76 7/1/11

65 7/20/11 75 7/16/11 74 6/7/11 69 6/6/11 72 7/16/11 74 7/10/11 76 6/8/11 77 6/8/2011 73 6/7/11 74 6/8/11

64 5/21/11 74 9/2/11 72 9/1/11 69 6/18/11 68 6/3/11 73 7/17/11 73 6/4/11 73 7/19/11 71 7/17/11 73 7/17/11

64 6/3/11 73 9/1/11 70 7/18/11 69 7/17/11 66 6/8/11 70 6/6/11 72 7/17/11 73 9/2/11 69 6/4/11 72 9/3/11

61 5/22/11 69 6/6/11 69 6/6/11 68 6/19/11 66 8/17/11 70 7/16/11 71 7/10/11 72 6/4/11 68 7/31/11 71 8/17/11

61 7/17/11 69 7/10/11 68 6/18/11 67 5/11/11 64 5/22/11 68 8/17/11 71 7/20/11 72 5/13/11 67 7/16/11 68 5/30/11

60 6/4/11 67 7/11/11 68 9/3/11 66 6/5/11 63 5/12/11 64 7/5/11 70 6/18/11 72 7/10/11 65 7/20/11 68 9/2/11

65 6/18/11 67 7/20/11 66 7/1/11 61 7/8/11 63 7/31/11 70 7/23/11 71 6/6/11 64 5/21/11 67 7/5/11

63 6/4/11 66 7/2/11 65 6/30/11 61 9/1/11 63 7/11/11 70 8/19/11 71 7/16/11 64 9/2/11 66 5/31/11

63 6/19/11 66 7/31/11 65 6/3/11 60 5/30/11 62 5/12/11 69 7/31/11 71 9/1/11 63 9/1/11 66 7/23/11

63 7/18/11 65 6/5/11 65 9/2/11 60 7/15/11 61 6/27/11 68 5/30/11 71 9/3/11 62 5/11/11 66 8/13/11

63 8/24/11 65 6/4/11 65 9/3/11 60 7/23/11 60 5/22/11 67 6/6/11 70 6/18/11 61 5/13/11 65 7/31/11

62 7/15/11 65 7/10/11 64 7/31/11 60 5/31/11 66 7/5/11 69 6/30/11 61 6/1/11 65 9/1/11

61 6/27/11 65 7/21/11 63 6/4/11 60 7/15/11 66 8/13/11 69 8/19/11 61 6/19/11 64 6/18/11

60 6/30/11 64 6/30/11 63 7/15/11 60 7/28/11 66 9/2/11 68 7/20/11 61 7/10/11 63 8/12/11

60 7/2/11 64 7/5/11 60 5/13/11 64 7/2/11 66 7/24/11 61 7/21/11 61 6/1/11

60 7/24/11 64 8/24/11 60 5/21/11 64 7/16/11 66 8/13/11 61 7/23/11 61 7/16/11

60 7/28/11 62 6/19/11 60 6/1/11 63 5/12/11 65 7/21/11 60 6/3/11 60 8/19/11

62 7/15/11 60 7/2/11 63 8/17/11 64 7/23/11 60 7/5/11

60 6/1/11 62 8/12/11 64 7/2/11

60 7/28/11 61 7/21/11 63 7/22/11

61 7/22/11 62 7/4/11

61 8/24/11 62 8/12/11

60 5/22/11 61 6/1/11

60 6/1/11 61 8/5/11

60 6/30/11 60 8/17/11

260370001 261050007 261530001 260910007 260991003 261610008

Rose Lake Scottville Seney Tecumseh Warren Ypsilanti

Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable Max Allowable

98 ppb 89 ppb 86 ppb 94 ppb 80 ppb 96 ppb

Value, 

ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date Value, ppb Date

78 6/7/11 94 6/7/11 78 6/6/11 85 7/1/11 87 9/1/11 88 7/1/11

78 7/16/11 85 7/20/11 74 6/7/11 79 6/8/11 82 7/1/11 79 6/18/11

74 6/8/11 79 6/6/11 69 7/20/11 76 6/7/11 82 6/7/11 78 6/6/11

71 6/6/11 72 7/10/11 66 7/1/11 76 6/6/11 81 7/17/11 77 6/8/11

71 7/17/11 70 7/16/11 66 7/9/11 73 6/18/11 76 6/8/11 75 6/7/11

70 5/11/11 68 8/17/11 64 7/10/11 73 9/1/11 76 7/10/11 72 9/1/11

69 7/1/11 67 6/3/11 63 7/16/11 73 9/2/11 71 6/6/11 70 6/5/11

66 6/4/11 64 6/8/11 60 4/1/11 72 7/10/11 71 9/2/11 70 7/10/11

66 9/2/11 63 5/22/11 71 6/4/11 71 9/3/11 70 7/16/11

65 6/5/11 62 7/5/11 71 7/21/11 70 6/30/11 69 6/4/11

65 6/19/11 62 7/17/11 69 6/5/11 70 6/5/11 69 7/17/11

64 6/18/11 60 7/8/11 69 7/8/11 69 6/18/11 67 9/2/11

63 6/3/11 60 7/23/11 69 7/17/11 69 7/19/11 66 9/3/11

62 5/13/11 68 7/2/11 68 6/4/11 66 7/8/11

62 7/10/11 68 9/3/11 68 7/20/11 66 7/19/11

62 7/31/11 67 6/30/11 68 8/13/11 64 7/15/11

62 9/1/11 66 7/19/11 67 7/31/11 63 7/21/11

61 9/3/11 64 5/21/11 67 7/16/11 63 7/31/11

61 5/21/11 64 5/11/11 67 8/19/11 63 8/5/11

61 6/1/11 63 6/1/11 64 7/16/11 62 5/21/11

61 7/2/11 63 8/13/11 63 5/12/11 61 6/26/11

60 5/12/11 62 8/17/11 63 7/24/11 61 7/2/11

60 7/21/11 62 5/12/11 63 7/23/11 61 6/30/11

62 7/15/11 63 7/30/11 61 5/12/11

61 6/27/11 61 7/2/11 61 6/1/11

61 7/16/11 61 6/17/11 61 6/26/11

61 7/20/11 61 8/17/11 61 8/13/11

60 8/24/11 61 8/20/11 60 5/13/11

60 5/20/11 60 7/20/11

60 5/22/11 60 8/19/11

60 7/3/11

60 7/22/11

Sites in violation of the standard are shaded red, sites not in violation of the standard are shaded green.

Data validated through 9/30/2011

Max. allowable values calculated using 75 ppb as the primary NAAQS

Summary of the Highest 8-Hour Ozone Concentrations for 2011 for All Sites in Michigan

The four highest values in ppb are listed. All values at and above 76 ppb are included to illustrate frequency of occurrence.

Max. Allowable is the maximum 4th highest value that can occur in 2011 without violation of the standard. Values above Max. Allowable are bold.