Pima County Department of Environmental Quality 33 North Stone Avenue Tucson, Arizona 85701 AQ - 388 2013 AIR QUALITY SUMMARY REPORT APPENDIX AIR QUALITY HISTORICAL DATA National Ambient Air Quality Standards..................................................... 2 PM 10 ..........................................................................................................3-8 PM 2.5 ...................................................................................................... 9-11 Lead ...........................................................................................................12 Total Suspended Particulates (TSP) ......................................................13-14 Carbon Monoxide ................................................................................15-23 Ozone ...................................................................................................25-34 Nitrogen Dioxide ...................................................................................35-38 Non-Methane Hydrocarbons ......................................................................39 Sulfur Dioxide ......................................................................................40-43 Water Soluble Sulfates ...............................................................................43 1 National Ambient Air Quality Standards (NAAQS) Pollutant CO O3 PM 10 PM 2.5 NO 2 SO 2 Pb Primary (Health Related) Type of Average Standard Level Concentration a 1-Hour b 8-Hour b 8-Hour c 24-Hour d Annual Arithmetic Mean e 24-Hour e Annual Arithmetic Mean 1-Hour f 1-Hour g Rolling 3-month Average Secondary (Welfare Related) Type of Standard Level Average Concentration 35 ppm (40 μg/m3) 9 ppm (10 μg/m3) 0.075 ppm 150 μg/m3 12 μg/m3 No Secondary Standard No Secondary Standard Same as Primary Same as Primary Same as Primary 35 μg/m3 53 ppb 100 ppb 75 ppb 0.15 μg/m3 Same as Primary Same as Primary None None Same as Primary a Parenthetical value is an approximately equivalent concentration (40 CFR, Part 50). b Not to be exceeded more than once per year. c The standard is met when the three year average of the annual fourth highest daily maximum concentration is less than or equal to 0.075ppm (effective May 27, 2008). d The 24-hour standard is met when the expected number of exceedances in a year averaged over three years is less than or equal to one (App. K). The annual standard was revoked December 17, 2006. e The 24-hour standard is met when the three year average of the 98th percentile value is less than or equal to 35 μg/m3 (effective December 14, 2012). The annual standard is met when the annual average of the quarterly concentrations is less than or equal to 12 μg/m3, when averaged over 3 years. f The 1- hour standard is met when the three year average of the 98th percentile of the daily maximum 1- hour average at each monitor within an area does not exceed 100 ppb (effective January 22, 2010) g The 1- hour standard is met when the three year average of the 99th percentile of the daily maximum 1-hour average at each monitor within an area does not exceed 75 ppb. (effective June 2, 2010) Reference: Http://www.epa.gov/air/criteria.html 2 South Tucson Prince Road Magnetic Observe. Corona de Tucson Green Valley Orange Grove Golf Links / Harrison University of Arizona Broadway / Swan Hidden Valley Fairgrounds Tangerine Santa Clara Central ‘88 50 -- 47* 49* 35* 21 20* 44* 30* 45* 37* -- -- -- -- -- ‘89 56 -- 49 52 36 20* 21 44 29 43 35 -- -- -- -- -- ‘90 33 -- 46 43* 26 16* 19 38* 25 38 29 -- -- -- -- -- ‘91 30 -- 34 32 21 13 16 31 20 30 25 -- -- -- -- -- ‘92 28 -- 32 28 22 12 15 30 20 29 26 -- -- -- -- -- ‘93 28 -- 32 24* 20 12 16 28 19 25 25 -- -- -- -- -- ‘94 29 33 27 25 D 13 16 31 19 D 26 -- 12 12 22 -- ‘95 31 35 31 38 -- 15 16 34 D -- 28 41 14 15 27 32 ‘96 33 23 31 35 -- 13 15 33 -- -- 25 18 15 14 28 28 ‘97 29 26 33 34* -- 15 16 31 -- -- 28 17 16 15 27 27 ‘98 31 22 39 35 -- 15 15 25 -- -- 26 20* 15 13 27* 25 ‘99 35 D 45a 44 -- 18 18 43a -- -- 32 D D 18 34 D ‘00 D -- 38 38 -- 18 17 39 -- -- 30 -- -- 18 31 -- ‘01 -- -- 31 33 -- 16 18 29 -- -- 26 -- -- 17 26 -- ‘02 -- -- 39 34 -- 15 20 33 -- -- 26 -- -- 19 28 -- ‘03 -- -- 34 31 -- 17 19 29 -- -- 27 -- -- 19 27 -- Downtown 22nd/ Craycroft PM 10 ANNUAL AVERAGES Measurements reported in µg/m3 D - Station discontinued * Annual average data recovery did not meet EPA standards (75% valid samples required). a – Averages omitted flagged high wind (exceedance) days. 3 PM 10 ANNUAL AVERAGES Measurements reported in µg/m3 Prince Road 28 Corona de Tucson 12 Green Valley 14 Orange Grove 27 Broadway / Swan 21 Tangerine 2004 South Tucson 29 15 Santa Clara 20 2005 30 37* 15 17 29 24 19 27 2006 34 35 23 17 32 27 23 36 2007 31 32 17 20 29 26 22 28 33* 2008 31 33 19 21 28 25 19 30 31 2009 30 33 18 17 27 24 18 27 31 2010 26 30 13 15 23 19 16 22 25 2011 30 31 16 18 26 D 18 26 29 2012 30 34 18 18 27 D 22 29 31 2013 26 31 15 17 27 D 27 27 31 D - Station discontinued * Annual average data recovery did not meet EPA standards (75% valid samples required). 4 Geronimo South Tucson Prince Road Magnetic Observe. Corona de Tucson Green Valley Orange Grove Golf Links / Harrison University of Arizona Broadway / Swan Hidden Valley Fairgrounds Tangerine Santa Clara Central ‘88 136 -- 70* 84* 54* 45* 44* 305* 51* 61* 109* -- -- -- -- -- ‘89 221 -- 105 109 92 59* 46 128 101 99 79 -- -- -- -- -- ‘90 117 -- 144 89* 77 53* 61 134* 68 81 73 -- -- -- -- -- ‘91 73 -- 60 75 42 21 26 81 38 51 43 -- -- -- -- -- ‘92 70 -- 81 73 54 30 26 102 58 114 73 -- -- -- -- -- ‘93 77 -- 88 49* 38 26 51 61 35 48 54 -- -- -- -- -- ‘94 71 82 58 67 D 29 28 52 32 D 61 -- 31 24 42 -- ‘95 103 106 77 132 -- 46 39 107 D -- 75 127 43 44 81 89 ‘96 123 38 72 79 -- 25 28 67 -- -- 40 43 74 24 62 53 ‘97 72 62 72 62* -- 34 42 68 -- -- 58 36 40 39 64 58 ‘98 96 52 87 88 -- 44 35 47 -- -- 52 35* 45 31 55 51 ‘99 129 D 214 118 -- 51 38 235 -- -- 89 D D 41 97 D ‘00 D -- 142 89 -- 88 63 141 -- -- 119 -- -- 71 97 -- ‘01 -- -- 134 125 -- 133 78 111 -- -- 120 -- -- 81 131 -- ‘02 -- -- 200 83 -- 40 98 171 -- -- 62 -- -- 63 86 -- ‘03 -- -- 150 126 -- 104 127 152 -- -- 122 -- -- 125 146 -- Downtown 22nd/ Craycroft PM 10 24-HR MAXIMUM VALUES Measurements reported in µg/m3 D - Station discontinued * Annual average data recovery did not meet EPA standards (75% valid samples required). 5 PM 10 24-HR MAXIMUM VALUES Measurements Reported in µg/m3 Prince Road 67 Corona de Tucson 37 Green Valley 127 Orange Grove 119 Broadway / Swan 35 Tangerine 2004 South Tucson 149 34 Santa Clara 41 2005 73 88* 33 54 98 46 37 82 2006 109 72 144 81 101 60 104 104 2007 97 99 50 123 95 80 88 92 104 2008 146 83 89 115 132 66 54 173 137 2009 184 81 85 84 270 67 101 90 237 2010 79 72 31 57 64 33 58 56 67 2011 119 55 42 75 100 D 66 73 116 2012 104 107 69 67 94 D 102 106 102 2013 165 75 66 434 142 D 73 71 187 D - Station discontinued * Annual average data recovery did not meet EPA standards (75% valid samples required). 6 Geronimo South Tucson Prince Road Magnetic Observe. Corona de Tucson Green Valley Orange Grove Golf Links / Harrison University of Arizona Broadway / Swan Hidden Valley Fairgrounds Tangerine Santa Clara Central ‘88 124 -- 59* 81* 51* 37* 25* 187 48* 56* 76* -- -- -- -- -- ‘89 203 -- 93 100 63 41* 44 122 101 88 67 -- -- -- -- -- ‘90 108 -- 108 75* 58 49* 59 116* 61 72 61 -- -- -- -- -- ‘91 62 -- 58 70 38 19 24 67 35 51 43 -- -- -- -- -- ‘92 69 -- 60 67 51 30 25 79 42 69 56 -- -- -- -- -- ‘93 61 -- 73 44 38 25 32 58 34 46 43 -- -- -- -- -- ‘94 58 80 54 46 D 21 26* 48 31 D 52 -- 23 -- 41 -- ‘95 69 63 58 70 -- 43 34 106 D -- 53 96 37 34 54 59 ‘96 81 36 53 60 -- 24 27 62 -- -- 39 38 29 24 54 45 ‘97 71 56 69 58 -- 31 30 66 -- -- 57 35 33 30 46 52 ‘98 78 39 74 70 -- 40 33 44 -- -- 51 34* 34 26 44 48 ‘99 117 D 207 80 -- 46 33 176 -- -- 51 D D 36 76 D ‘00 D -- 123 68 -- 50 35 100 -- -- 56 -- -- 38 72 -- ‘01 -- -- 115 83 -- 85 73 100 -- -- 70 -- -- 62 111 -- ‘02 -- -- 192 62 -- 30 75 125 -- -- 54 -- -- 58 53 -- ‘03 -- -- 128 56 -- 47 118 120 -- -- 66 -- -- 50 63 -- Downtown 22nd/ Craycroft PM 10 2ND 24-HR MAXIMUM VALUES Measurements reported in µg/m3 D - Station discontinued * Annual average data recovery did not meet EPA standards (75% valid samples required). 7 PM 10 2ND 24-HR MAXIMUM VALUES Measurements Reported in µg/m3 South Tucson 2004 117 Prince Road 50 Corona de Tucson 24 Green Valley 96 Orange Grove 100 Broadway / Swan 34 Tangerine 26 Santa Clara 41 2005 73 88 31 51 74 44 35 55 2006 85 71 70 50 88 55 59 93 2007 96 62 48 77 95 80 44 60 77 2008 121 68 67 97 88 42 50 81 112 2009 127 75 52 78 97 52 41 48 124 2010 66 58 29 32 57 33 35 50 66 2011 87 55 38 70 89 D 65 68 85 2012 89 81 36 63 88 D 41 75 88 2013 156 64 34 95 115 D 72 71 149 8 Geronimo PM 2.5 VALUES Dichotomous sampling Measurements Reported in µg/m3 1998 98th percentile 24- Hr Annual 24-hr Avg Max Mean 22nd/Craycroft 12.3 12.8 6.3 Orange Grove 14.3 20.6 7.3 Fairgrounds 10.2 22.2 5.0 Tangerine 10.1 10.3 4.6 Central 15.4 16.1 7.5 Data based on local conditions Central, 22nd and Craycroft and Orange Grove sites monitored for visibility studies in 1999. Fairgrounds and Tangerine dichotomous sampling was discontinued January 1999. 9 PM 2.5 VALUES Measurements Reported in µg/m3 24-Hr Maximum Children’s Park Rose Elementary3,4 Coachline3,4 Green Valley3,4 Geronimo3,4 1999 22.8 Orange Grove 56.2 2000 13.6 13.3 2001 17.5 20.9 32 23 1 19 28 2 2002 27.6 26.2 35 37 23 45 2003 18.8 18.0 39 30 28 32 2004 12.2 16.5 21.0 21.1 11.2 25.8 2005 13.2 16.1 19.0 22.2 16.4 28.3 2006 16.2 18.5 34.5 19.7 8.6 22.6 2007 13.4 20.7 24.4 20.8 14.5 23.6 2008 15.3 18.3 22.6 21.3 2.6 28.2 2009 15.8 13.9 22.3 29.0 12.3 30.8 2010 13.5 15.7 22.4 18.2 10.2 29.0 2011 12.2 13.8 33.3 33.7 18.8 24.7 2012 14.3 19.1 21.0 21.0 12.8 27.7 2013 16.5 21.3 37.5 25.3 78.2 33.6 1 Monitoring began 03/13/01, Annual Mean based on limited number of samples Monitoring began 08/01/01, Annual Mean based on limited number of samples 3 Special Purpose sites 4 Data prior to 2004 was in raw form and not adjusted to be FRM like. 2 10 PM 2.5 VALUES Measurements Reported in µg/m3 Annual Mean Children’s Park Rose Elementary3,4 Coachline3,4 Green Valley3,4 Geronimo3,4 1999 8.5 Orange Grove 9.3 2000 6.6 7.7 2001 6.8 7.6 14 11 1 8 11 2 2002 7 6 14 13 7 13 2003 7 6 13 11 7 11 2004 5.6 5.8 6.3 6.4 3.5 7.0 2005 5.9 6.3 6.7 7.5 3.8 8.9 2006 5.8 5.8 9.0 7.9 2.8 8.5 2007 5.7 5.8 6.5 5.8 4.3 7.0 2008 5.4 5.7 6.5 7.6 5.0 6.8 2009 5.5 5.3 5.4 5.5 4.0 8.2 2010 5.0 5.2 5.4 5.1 3.8 9.5 2011 5.4 5.7 8.7 8.1 4.9 9.5 2012 5.4 5.9 5.6 7.7 6.2 9.3 2013 5.0 5.2 7.5 6.1 4.9 9.3 1 Monitoring began 03/13/01, Annual Mean based on limited number of samples Monitoring began 08/01/01, Annual Mean based on limited number of samples 3 Special Purpose sites 4 Data prior to 2004 was in raw form and not adjusted to be FRM like. 2 11 LEAD VALUES Measurements Reported in µg/m3 22ND / CRAYCROFT Year Annual Average (ppm) .0018 .002 2012 2013 Maximum 24-Hr. (ppm) .005 .007 % Data Recovery 85 97 LEAD State and federal Standards Primary & Secondary: Calendar Quarter Average 1.5 µg/m3 Site 22nd / Craycroft ‘96 High Quarterly Average in µg/m3 '95 '94 '93 '92 '91 '90 '89 '88 '87 0.05 0.01 0.02 0.02 0.01 -- -- -- -- -- Prince Road (TSP)** Prince Road (PM 10 )** Broadway / Swan (TSP)** Broadway / Swan (PM10)** South Tucson*** 0.04 0.02 0.05 0.04 0.06 0.05 0.05 -- -- 0.10 -- -- -- -- -- -- 0.03 0.06 0.10 -- -- -- -- -- -- -- -- -- -- 0.04 -- -- -- -- 0.01 0.01 0.01 0.04 0.05 -- -- -- -- -- 0.03 -- -- -- -- -- Site Magnetic Observatory* Prince Road (TSP)** Broadway / Swan (TSP)** ‘86 '85 '84 '83 '82 '81 '80 '79 '78 '77 -- -- -- 0.24 0.21 0.22 0.23 0.40 0.42 -- 0.27 0.58 0.59 0.65 0.58 0.52 0.82 1.14 1.017 1.61 0.16 0.50 0.37 0.50 -- -- -- -- -- -- * Magnetic Observatory discontinued in 1984. ** On 2/21/88 Prince Rd. was converted from using TSP to PM 10 filters for lead sampling. Then on10/20/90 a TSP sampler was placed back at Prince Rd. just for use in determining lead concentrations. On 6/26/87 Broadway / Swan converted from TSP to PM 10 . Lead values determined from PM 10 filters will be lower than those utilizing TSP filters. Since health standards are based on the TSP method of determining concentrations, all lead samplers were converted to TSP filters on 3/1/92. *** Started TSP sampling on 6/17/91. Moved to 22nd / Craycroft on 3/1/92. 12 TOTAL SUSPENDED PARTICULATES (TSP) Annual Geometric Means in µg/m3 ‘96 ‘95 '94 '93 '92 '91 '90 '89 '88 '87 '86 '85 '84 '83 '82 '81 22nd / Craycroft University of Arizona* South Tucson Tucson Downtown 51 52 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 45 67 70 71 86 66 82 77 70 54 59 76 -- -- -- -- 55 66 81 89 81 83 95 99 91 79 89 112 67 70 -- -- -- -- -- -- -- -- -- -- 63 52 64 67 Prince Road -- -- 70 65 73 72 62 -- 88 87 93 102 91 77 93 101 Magnetic * Observatory Corona de Tucson Green Valley -- -- -- -- -- -- -- -- -- -- -- -- 54 45 53 62 -- -- -- -- -- -- -- 37 30 25 20 20 25 18 22 35 -- -- -- -- -- 51 30 37 31 39 39 37 39 27 33 46 Border Patrol* Orange Grove Hughes Nogales* Alvernon / Ft. Lowell* Golf Links / Harrison* Broadway / Swan Rillito* -- -- -- -- -- -- -- -- -- -- -- -- 69 48 52 58 -- -- -- -- -- – 82 91 82 80 86 87 92 78 86 107 -- -- -- -- -- -- -- -- -- -- -- 52 48 34 44 54 -- -- -- -- -- -- -- -- -- -- -- 76 73 70 89 98 -- -- -- -- -- -- -- -- -- 52 42 47 55 48 58 67 -- -- -- -- -- -- -- -- -- 66 62 76 65 59 -- -- -- -- -- -- -- -- -- -- -- -- -- 84 -- -- 107 112 -- -- -- -- -- -- -- -- -- -- 36 47 -- -- -- -- -- -- -- -- -- -- -- 68 34 35 39 Pima ----College* Davis ----Monthan* Sahuarita Jr. --36 37 High * * Sites discontinued or put on reserve. 13 TOTAL SUSPENDED PARTICULATES (TSP) Annual Geometric Means in µg/m3 '80 '79 '78 '77 '76 '75 '74 '73 '72 '71 '70 '69 '68 '67 22nd / Craycroft U of A * S. Tucson Downtown Prince Road Magnetic * Observatory Corona de Tucson Green Valley -- -- -- -- -- -- -- -- -- -- -- -- -- -- 75 97 61 117 59 89 101 69 129 61 61 117 56 110 56 71 119 68 122 67 73 118 71 94 59 71 96 67 74 60 69 106 77 81 47 67 116 77 109 46 98 95 88 110 53 88 140 109 101 -- 96 143 88 --- 78 136 98 --- 70 115 911 --- 89 145 102 – -- 22 28 20 24 28 27 24 25 26 -- -- -- -- -- 39 54 45 55 54 53 53 50 43 59 -- -- -- -- Border Ptrl* 61 69 66 72 76 79 60 73 -- -- -- -- -- -- Orange Grove 108 109 84 85 85 87 76 -- -- -- -- -- -- -- Hughes / Nogales* Alvernon / Ft. Lowell* Golf Links / Harrison* Broadway/ Swan Rillito* Pima College* 54 54 43 50 51 54 54 -- -- -- -- -- -- -- 101 120 126 155 168 174 -- -- -- -- -- -- -- -- 59 65 55 63 57 62 59 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 114 43 132 47 100 42 143 50 112 -- --- --- --- --- --- --- --- --- --- Davis Monthan* Florence / Magee* Pantano Fire * 67 69 69 76 72 73 80 88 -- -- -- -- -- -- -- 60 50 72 54 66 64 44 -- -- -- -- -- -- -- -- -- 93 93 84 89 101 -- -- -- -- -- -- -- -- 130 115 86 91 72 114 -- -- -- 247 164 156 -- 232 Tanque Verde ------* Romero / ------Roger* * Sites discontinued or put on reserve. 1 Old Downtown site Relocated to new Downtown site. 14 CARBON MONOXIDE 1- Hour Average (in ppm) 1st 2nd Maximum Maximum 8- Hour Average (in ppm) 1st 2nd Maximum Maximum 1975 23.0 18.0 8.2 1976 17.0 16.5 1977 21.0 1978 DOWNTOWN # Over 8Hr. Standard % Data Recovery 7.9 0 99 10.4 8.9 1 90 18.5 9.9 9.4 1 99 14.1 10.7 7.1 7.1 0 95 1979 10.0 10.0 6.1 5.9 0 84 1980 14.0 11.0 6.5 6.1 0 42 1981 15.5 15.2 9.3 8.6 0 93 1982 15.5 15.5 9.1 8.8 0 95 1983 18.5 17.2 9.6 7.8 1 92 1984 11.0 10.0 5.8 5.6 0 95 1985 12.0 10.6 7.1 5.3 0 98 1986 13.8 13.0 9.2 7.8 0 89 1987 10.3 9.1 5.3 4.7 0 94 1988 15.6 14.8 12.7 6.8 1 96 1989 9.7 9.4 6.5 5.8 0 98 1990 13.8 9.3 4.4 4.3 0 91 1991 10.7 8.6 5.1 4.7 0 96 1992 8.7 8.1 5.0 4.8 0 92 1993 7.7 7.0 4.9 4.4 0 95 1994 10.8 7.4 5.0 4.5 0 92 1995 11.3 10.4 5.5 4.5 0 95 1996 9.9 7.6 4.6 4.4 0 98 1997 8.2 7.8 4.8 4.4 0 99 1998 7.6 7.5 4.3 3.9 0 97 1999 10.6 6.3 4.3 3.9 0 99 2000 6.7 6.0 3.8 3.5 0 99 2001 5.6 5.1 2.7 2.5 0 99 2002 6.6 5.1 3.7 2.3 0 99 2003 10 9.6 3.1 2.7 0 98 2004 5.5 4.7 3.7 2.5 0 99 2005 3.0 2.8 1.9 1.7 0 100 2006 2.9 2.6 1.4 1.2 0 100 2007 3.4 2.7 1.9 1.4 0 99 2008 2.2 1.8 1.3 1.0 0 99 2009 1.8 1.5 1.0 1.0 0 99 • • 3 All values before 1985 were recorded in µg/m . All historical data has been converted to ppm. Downtown site closed 08-13-2009 15 CARBON MONOXIDE 22ND / CRAYCROFT 1975 1- Hour Average (in ppm) 1st 2nd Maximum Maximum 16.5 15.0 8- Hour Average (in ppm) 1st 2nd Maximum Maximum 7.0 6.8 # Over 8- Hr. Standard 0 % Data Recovery 67 1976 14.0 14.0 6.7 6.5 0 87 1977 21.0 17.5 8.5 6.6 0 92 1978 15.9 14.5 6.5 6.3 0 93 1979 11.0 10.8 5.9 5.8 0 74 1980 16.5 16.0 6.1 5.7 0 98 1981 11.2 18.5 5.7 4.7 0 88 1982 12.0 9.5 6.0 5.0 0 88 1983 16.5 10.2 5.8 5.2 0 95 1984 11.9 11.8 7.5 4.7 0 74 1985 12.2 9.4 5.4 5.1 0 78 1986 7.9 7.7 3.8 2.9 0 66 1987 9.0 8.2 3.8 3.8 0 47 1988 11.1 10.0 5.4 5.1 0 88 1989 9.5 9.1 5.0 4.3 0 94 1990 6.8 6.2 3.1 3.1 0 91 1991 6.4 5.9 3.5 2.8 0 92 1992 7.5 7.2 3.5 3.3 0 85 1993 8.3 8.2 5.1 3.1 0 96 1994 7.0 6.6 3.9 3.2 0 92 1995 6.7 6.4 3.0 2.6 0 98 1996 6.7 6.0 3.1 2.8 0 99 1997 7.2 6.9 3.4 2.6 0 99 1998 4.8 4.6 2.6 2.3 0 97 1999 5.4 4.7 2.3 2.0 0 99 2000 5.4 5.4 2.7 2.4 0 97 2001 3.7 3.6 1.9 1.7 0 97 2002 3.8 3.8 2.0 1.9 0 98 2003 4.4 4.3 2.1 1.9 0 99 2004 3.6 3.4 1.6 1.6 0 99 2005 3.5 3.3 1.7 1.5 0 100 2006 3.2 2.9 1.6 1.4 0 100 2007 2.6 2.5 1.2 1.2 0 99 2008 2.6 2.1 1.1 1.1 0 99 2009 1.9 1.8 1.0 0.8 0 99 3 * All values before 1985 were recorded in µg/m . All historical data has been converted to ppm. 16 CARBON MONOXIDE 22ND / CRAYCROFT 2010 1- Hour Average (in ppm) 1st 2nd Maximum Maximum 2.0 1.7 8- Hour Average (in ppm) 1st 2nd Maximum Maximum 1.1 .9 # Over 8- Hr. Standard 0 % Data Recovery 99 2011 2.1 2.0 0.9 0.9 0 99 2012 1.9 1.8 1.0 1.0 0 99 2013 1.6 1.6 0.7 0.7 0 99 17 CARBON MONOXIDE 22ND/ ALVERNON 1975 1- Hour Average (in ppm) 1st 2nd Maximum Maximum 25.5 23.0 8- Hour Average (in ppm) 1st 2nd Maximum Maximum 15.4 15.2 # Over 8- Hr. Standard 24 % Data Recovery 71 1976 27.0 27.0 14.6 13.4 36 98 1977 24.0 24.0 11.2 11.2 10 64 1978 22.9 22.3 12.7 12.0 16 80 1979 25.1 23.9 11.0 10.1 4 93 1980 24.8 21.2 12.2 11.9 4 98 1981 21.0 19.5 11.6 9.7 2 97 1982 27.0 20.5 11.0 10.8 4 90 1983 25.0 19.3 11.8 10.4 10 98 1984 21.0 17.4 10.4 10.2 3 95 1985 19.2 19.2 10.0 8.9 1 97 1986 18.2 16.3 9.3 8.5 0 79 1987 15.2 15.0 6.9 6.9 0 98 1988 18.4 18.4 11.2 6.8 1 88 1989 14.6 13.7 7.9 7.1 0 98 1990 12.8 11.7 6.8 6.5 0 95 1991 12.3 12.1 6.4 5.7 0 96 1992 1993 12.5 14.3 11.2 13.5 6.1 6.5 5.8 6.0 0 0 98 95 1994 10.3 9.4 6.0 5.5 0 96 1995 11.9 10.6 6.0 5.9 0 99 1996 10.0 9.9 5.2 5.1 0 99 1997 9.0 8.6 5.3 4.4 0 99 1998 7.8 7.6 4.0 4.0 0 100 1999 8.5 7.8 4.2 3.8 0 100 2000 8.9 7.5 5.0 4.7 0 99 2001 5.8 5.7 3.0 2.9 0 99 2002 5.7 5.1 2.6 2.5 0 98 2003 6.0 5.8 2.7 2.6 0 99 2004 4.0 4.0 2.1 2.0 0 99 2005 4.1 3.6 2.2 2.1 0 99 2006 3.4 3.4 2.0 1.8 0 99 2007 3.7 3.1 2.1 1.9 0 99 2008 2.9 2.5 1.4 1.3 0 99 2009 2.3 2.2 1.2 1.1 0 100 3 * All values before 1985 were recorded in ug/m . All historical data has been converted to ppm. 18 CARBON MONOXIDE 22ND/ ALVERNON 1- Hour Average (in ppm) 1st 2nd Maximum Maximum 8- Hour Average (in ppm) 1st 2nd Maximum Maximum 2010 2.5 2.5 1.1 2011 3.1 2.5 2012 3.0 2013 2.3 % Data Recovery 1.1 # Over 8- Hr. Standard 0 1.8 1.6 0 99 2.3 1.3 1.2 0 97 1.8 1.1 1.1 0 97 99 \ CARBON MONOXIDE Special Purpose Site 1- Hour Average (in ppm) 8- Hour Average (in ppm) CHILDREN’S PARK 1st Maximum 2nd Maximum 1st Maximum 2nd Maximum 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 3.3 3.8 2.9 2.5 2.4 2.2 2.0 1.7 1.9 1.5 1.6 1.2 1.1 1.2 1.0 3.0 3.5 2.9 2.5 2.3 2.2 1.8 1.7 1.8 1.3 1.2 1.1 1.1 1.0 0.9 1.9 1.9 1.7 1.6 1.5 1.4 1.1 1.1 1.1 1.0 1.0 0.8 0.7 0.6 0.7 1.9 1.9 1.7 1.6 1.4 1.4 1.1 1.0 1.0 0.9 0.9 0.8 0.6 0.6 0.6 Children’s Park carbon monoxide monitoring began October, 1998. 19 # Over 8- Hr. Standard 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 % Data Recovery 95 99 97 99 99 100 100 99 98 97 95 99 99 98 99 CARBON MONOXIDE Special Purpose Site 1- Hour Average (in ppm) GOLF LINKS & KOLB 1st Maximum 2nd Maximum 8- Hour Average (in ppm) 1st Maximum 2nd Maximum # Over % Data 8- Hr. Recovery Standard 4.9 4.2 3.3 2.6 0 25 2002 3.9 3.8 2.2 2.2 0 98 2003 3.6 3.5 2.1 2.1 0 99 2004 3.3 3.2 2.2 2.1 0 100 2005 3.8 2.9 1.8 1.6 0 100 2006 2.5 2.1 1.3 1.3 0 100 2007 2.0 1.8 1.3 1.2 0 97 2008 1.7 1.7 1.1 1.0 0 100 2009 2.8 2.3 1.4 1.2 0 98 2010 1.7 1.6 1.1 1.1 0 99 2011 1.5 1.4 0.9 0.9 0 98 2012 1.4 1.3 0.9 0.8 0 99 2013 Golf Links and Kolb carbon monoxide monitoring began September 28, 2002. Golf Links and Kolb site monitors for carbon monoxide seasonally. 20 CARBON MONOXIDE Special Purpose Sites 1986 1st Maximum 8-Hr. (in ppm) 10.1 2nd Maximum 8-Hr. (in ppm) 8.5 1987 1988 1989 1990 1991 1992 9.2 7.1 7.6 6.7 6.2 5.4 8.1 6.4 7.5 6.1 6.0 5.3 1987 8.4 8.2 1987 9.3 7.9 Broadway / Craycroft Year PAG Study (Dec-Mar) ADEQ Study (Dec) PDEQ (Oct-Dec) Closed Jan 5, 1993 Grant / Campbell PAG Study (Jan-Mar) 22nd / Alvernon ADEQ (Oct- Dec) SE Corner Sabino Canyon* Mar-Apr & Oct-Dec 2.3 2.2 1986 2.5 2.3 1987 3.8 3.1 1988 3.0 2.6 1989 3.0 3.0 1990 3.1 3.0 1991 2.2 1.8 1992 1.8 1.6 1993 Closed at the end of 1994 1.9 1.8 1994 3 * All values before 1985 were recorded in ug/m . All historical data has been converted to ppm. 21 CARBON MONOXIDE Special Purpose Sites Highland Park Year Dec Nov-Dec 1987 1988 1989 1990 1991 1992 1993 Jan-Apr 15 & Sep 15-Dec Closed Apr 15, 1993 1st Maximum 8-Hr. (in ppm) 4.7 4.1 5.4 3.1 3.5 4.1 2.5 2nd Maximum 8-Hr. (in ppm) 2.1 4.1 4.8 3.0 3.1 3.9 2.5 Tangerine Rd. May-Dec 1.6 1.6 1990 1.9 1.6 1991 1.3 1.3 1992 0.7 0.7 1993 Closed first quarter of 1994 0.8 0.8 1994 3 All values before 1985 were recorded in ug/m . All historical data has been converted to ppm. CARBON MONOXIDE Special Purpose Sites 1- Hour Average (in ppm) POMONA1 1st Maximum 2nd Maximum 8- Hour Average (in ppm) 1st Maximum 2nd Maximum # Over 8- Hr. Standard 0 0 0 0 0 0 % Data Recovery 6.8 6.3 4.2 3.7 25 1991 8.2 8.0 5.0 4.8 85 1992 6.3 6.0 3.7 3.7 99 1993 8.5 8.4 4.0 3.9 98 1994 9.4 7.4 3.8 3.3 75 1995 5.6 5.5 2.7 2.7 66 1996 2 1 Pomona site start-up on October 1, 1991. 2 Pomona closed in August of 1996. * All values before 1985 were recorded in ug/m3. All historical data has been converted to ppm. 22 CARBON MONOXIDE Special Purpose Sites Cherry / Glenn Year 1st Maximum 2nd Maximum 1-Hr. (in ppm) 1-Hr. (in ppm) 1st Maximum 2nd Maximum 8-Hr. 8-Hr. (in ppm) (in ppm) Jan-Apr 15 & Sep 15-Dec 1989 6.9 6.3 1990 4.5 4.3 1991 4.9 4.8 1992 8.6 7.6 5.7 5.0 1993 6.6 6.5 4.5 4.4 1994 8.7 7.3 5.4 5.1 1995 9.2 7.9 4.9 4.5 1996 8.2 7.8 4.1 4.0 1997 6.5 5.6 4.1 3.4 1998 5.9 5.1 4.3 3.1 1999 5.2 5.2 3.4 3.4 2000 5.3 5.0 3.7 3.3 2001 3.9 3.6 2.8 2.6 Jan– June18 & Oct -Dec 2002 3.9 2.6 2.6 2.3 Jan-March & Oct - Dec 2003 4.2 3.9 2.9 2.7 Jan-April & Oct 7 - Dec 2004 4.0 3.9 2.7 2.2 Jan-April & Oct -Dec 2005 3.8 3.4 2.5 2.4 Jan-April & Oct -Dec 2006 3.4 3.3 2.3 2.0 Jan-March & Oct -Dec 2007 2.8 2.7 1.9 1.5 Jan-March & Oct -Dec 2008 2.5 2.5 1.9 1.5 Jan-March & Oct -Dec 2009 2.2 1.9 1.3 1.2 Jan-March & Oct -Dec 2010 2.1 2.1 1.4 1.3 Jan-March & Oct -Dec 2011 1.8 1.7 1.3 1.2 Jan-March & Oct -Dec 2012 1.5 1.4 1.3 1.2 Jan-March & Oct -Dec 2013 2.1 1.8 1.2 1.1 23 NOTICE: Some data reported in the OZONE section of this document may not match data reported by the EPA Air Quality System (AQS). The reason for this discrepancy is the measuring period used by the EPA does not match the measuring period used by PDEQ. The EPA uses a twelve hour period to encompass daylight hours only. The Tucson area often experiences episodes of elevated OZONE concentrations after sunset and therefore uses a twenty four hour period for reporting purposes. 24 OZONE 22nd / CRAYCROFT % Data Recovery Annual Average (ppm) YEAR 1- Hr. Average (ppm) 2nd Maximum 0.130 4th Highest 8Hour Average (ppm) 1975 0.025 1st Maximum 0.130 1976 0.022 0.090 0.090 0.070 80 1977 0.022 0.100 0.100 0.068 81 1978 0.024 0.107 0.105 0.071 86 1979 0.027 0.103 0.103 0.073 82 1980 0.034 0.110 0.102 0.080 90 1981 0.027 0.124 0.120 0.069 93 1982 0.025 0.121 0.120 0.076 85 1983 0.024 0.105 0.101 0.076 84 1984 0.026 0.111 0.108 0.072 93 1985 0.027 0.106 0.105 0.084 85 1986 0.020 0.078 0.078 0.065 48 1987 0.030 0.092 0.091 0.075 84 1988 0.022 0.093 0.092 0.068 94 1989 0.023 0.084 0.084 0.063 97 1990 0.025 0.094 0.089 0.069 97 1991 0.026 0.084 0.081 0.069 96 1992 0.028 0.110 0.094 0.078 93 1993 0.027 0.096 0.094 0.075 99 1994 0.027 0.094 0.093 0.075 99 1995 0.027 0.107 0.101 0.080 98 1996 0.028 0.091 0.090 0.077 98 1997 0.028 0.106 0.097 0.077 99 1998 0.028 0.104 0.095 0.073 99 1999 0.029 0.095 0.092 0.071 99 2000 0.028 0.089 0.084 0.075 100 2001 0.027 0.089 0.084 0.069 99 2002 0.028 0.094 0.086 0.075 99 2003 0.027 0.090 0.087 0.073 99 2004 0.026 0.079 0.078 0.069 99 2005 0.026 0.093 0.089 0.074 99 2006 0.028 0.082 0.079 0.069 99 2007 0.029 0.088 0.083 0.068 100 2008 0.029 0.085 0.078 0.066 100 77 0.029 0.079 0.077 0.063 100 2009 * Annual average based on a limited number of samples. 1973-75 data from 22nd/Craycroft site are total oxidants. 25 OZONE 22nd / CRAYCROFT % Data Recovery Annual Average (ppm) Highest 1- Hr. Average (ppm) 4th Highest 8Hour Average (ppm) 2010 0.029 0.076 0.066 100 2011 0.031 0.090 0.070 100 2012 0.031 0.077 0.068 99 2013 0.028 0.083 0.063 100 YEAR 26 OZONE Annual Average (ppm) Highest 1- Hr. Average (ppm) 4th Highest 8- Hour Average (ppm) % Data Recovery 1989 0.031* 0.056 0.047 17 1990 0.038 0.096 0.074 95 1991 0.038 0.087 0.073 98 1992 0.035 0.085 0.068 99 1993 0.036 0.102 0.077 99 1994 0.038 0.082 0.069 99 1995 0.035 0.087 0.074 99 1996 0.035 0.082 0.071 97 1997 0.037 0.083 0.070 99 1998 0.036 0.095 0.070 99 1999 0.039 0.087 0.073 99 2000 0.037 0.081 0.073 99 2001 0.035 0.078 0.067 99 2002 0.036 0.093 0.075 98 2003 0.039 0.085 0.074 99 2004 0.037 0.076 0.068 100 2005 0.037 0.080 0.073 99 2006 0.039 0.088 0.076 99 2007 0.037 0.080 0.069 100 2008 0.038 0.082 0.071 99 2009 0.038 0.084 0.068 99 2010 0.038 0.076 0.069 100 2011 0.038 0.076 0.069 99 2012 0.038 0.076 0.069 99 2013 0.036 0.085 0.066 99 TANGERINE YEAR * Annual average based on a limited number of samples. 27 OZONE Annual Average (ppm) Highest 1- Hr. Average (ppm) 4th Highest 8Hour Average (ppm) % Data Recovery 1989 0.025* 0.063 0.051 19 1990 0.032 0.099 0.074 88 1991 0.033 0.090 0.074 98 1992 0.030 0.082 0.068 99 1993 0.031 0.091 0.074 95 1994 0.033 0.091 0.073 100 1995 0.031 0.095 0.076 97 1996 0.031 0.084 0.070 98 1997 0.030 0.080 0.065 99 1998 0.031 0.088 0.071 96 1999 0.032 0.085 0.068 99 2000 0.032 0.083 0.074 100 2001 0.030 0.080 0.066 98 2002 0.032 0.087 0.072 99 2003 0.032 0.085 0.070 99 2004 0.031 0.078 0.064 99 2005 0.031 0.085 0.073 97 2006 0.033 0.083 0.068 99 2007 0.034 0.085 0.071 97 2008 0.035 0.084 0.072 99 2009 0.034 0.079 0.064 99 2010 0.034 0.079 0.069 99 2011 0.035 0.085 0.073 97 2012 0.035 0.077 0.069 100 2013 0.034 0.087 0.072 99 PIMA COUNTY FAIRGROUNDS Year * Annual average based on a limited number of samples. 28 OZONE SAGUARO NATIONAL MONUMENT Annual Average (ppm) Highest 1-Hr. Average (ppm) 1982 0.032 0.100 55 1983 0.038 0.111 92 1984 0.038 0.108 92 1985 0.038 0.105 85 1986 0.030 0.103 91 4th Highest 8Hour Average (ppm) % Data Recovery Year 1987 SITE TAKEN OVER BY NATIONAL PARK SERVICE 1987 TO 1993 1993 0.036 0.102 0.082 97 1994 0.042 0.109 0.080 98 1995 0.039 0.118 0.083 97 1996 0.039 0.092 0.076 94 1997 0.042 0.099 0.079 98 1998 0.042 0.099 0.077 99 1999 0.041 0.090 0.069 94 2000 0.036 0.087 0.074 94 2001 0.036 0.083 0.066 95 2002 0.038 0.091 0.077 99 2003 0.041 0.098 0.078 97 2004 0.041 0.085 0.073 99 2005 0.041 0.101 0.079 100 2006 0.042 0.087 0.076 99 2007 0.041 0.084 0.073 98 2008 0.042 0.090 0.074 100 2009 0.041 0.075 0.067 100 2010 0.041 0.082 0.068 99 2011 0.042 0.098 0.075 100 2012 0.043 0.081 0.071 99 2013 0.041 0.084 0.074 99 29 OZONE Annual Average (ppm) Highest 1Hr. Average (ppm) 4th Highest 8Hour Average (ppm) % Data Recovery 1997 0.023* 0.093 0.065 38 1998 0.026 0.086 0.072 98 1999 0.027 0.092 0.071 99 2000 0.026 0.094 0.077 98 2001 0.025 0.084 0.069 99 2002 0.025 0.090 0.073 99 2003 0.027 0.089 0.076 99 2004 0.026 0.082 0.068 99 2005 0.027 0.086 0.075 99 2006 0.027 0.082 0.072 99 2007 0.028 0.081 0.071 98 2008 0.028 0.084 0.069 99 2009 0.029 0.080 0.067 100 2010 0.028 0.082 0.066 99 2011 0.029 0.082 0.068 100 2012 0.029 0.071 0.065 99 2013 0.029 0.082 0.071 100 ROSE ELEMENTARY2 2001 0.025 0.082 2002 0.025 0.087 2003 0.025 0.086 0.065 99 2004 0.024 0.073 0.064 99 2005 0.024 0.075 0.067 100 2006 0.026 0.075 0.067 99 2007 0.028 0.082 0.069 99 2008 0.028 0.077 0.065 99 2009 0.027 0.076 0.061 99 2010 0.027 0.075 0.068 99 2011 0.026 0.078 0.066 99 2012 0.028 0.076 0.067 98 2013 0.029 0.082 0.070 99 CHILDREN’S PARK YEAR * Based on a limited number of samples. 2 Special Purpose site 30 95 99 OZONE COACHLINE2,3 Annual Average (ppm) Highest 1- Hr. Average (ppm) 4th Highest 8Hour Average (ppm) % Data Recovery YEAR 2001 0.026* 0.078 2002 0.024 0.090 2003 0.022 0.078 0.061 99 2004 0.023 0.074 0.068 97 2005 0.024 0.075 0.066 99 2006 0.026 0.083 0.071 99 2007 0.025 0.077 0.064 99 2008 0.027 0.080 0.068 99 2009 0.027 0.082 0.062 99 2010 0.025 0.072 0.063 99 2011 0.026 0.072 0.065 99 2012 0.026 0.072 0.066 99 2013 0.029 0.080 0.066 99 GREEN VALLEY2,4 2002 0.035* 0.089 2003 0.034 0.082 0.066 99 2004 0.032 0.075 0.066 99 2005 0.032 0.081 0.068 98 2006 0.034 0.083 0.070 99 2007 0.033 0.085 0.065 98 2008 0.034 0.069 0.064 99 2009 0.035 0.080 0.065 96 2010 0.035 0.077 0.066 99 2011 0.037 0.079 0.071 99 2012 0.036 0.078 0.070 99 2013 0.035 0.079 0.069 98 * Annual average based on a limited number of samples. 2 Special Purpose site 3 Monitoring began 03/22/2001 4 Monitoring began 04/01/2002 31 74 99 76 OZONE DOWNTOWN Annual 1- Hr. Average (ppm) Average (ppm) Year 1st Maximum 2nd Maximum th 4 Highest 8Hour Average (ppm) % Data Recovery 1975 0.018 0.110 0.100 0.076 94 1976 0.020 0.110 0.110 0.071 99 1977 0.018 0.100 0.090 0.063 98 1978 0.018 0.103 0.100 0.066 92 1979 0.022 0.109 0.102 0.075 91 1980 0.021 0.122 0.112 0.064 99 1981 0.022 0.088 0.088 0.066 98 1982 0.027 0.123 0.107 0.076 95 1983 0.023 0.109 0.097 0.070 98 1984 0.020 0.103 0.102 0.065 95 1985 0.020 0.097 0.094 0.069 96 1986 0.021 0.091 0.090 0.070 91 1987 0.021 0.089 0.083 0.065 95 1988 0.019 0.091 0.087 0.064 96 1989 0.020 0.087 0.086 0.065 98 1990 0.021 0.090 0.087 0.071 95 1991 0.022 0.084 0.082 0.071 89 1992** 0.020 0.079 0.078 0.063 99 1993 0.020 0.086 0.081 0.068 99 1994 0.022 0.083 0.080 0.067 100 1995 0.019 0.090 0.087 0.070 98 1996 0.020 0.085 0.085 0.069 97 1997 0.019 0.084 0.082 0.065 98 1998 0.018 0.079 0.078 0.062 96 1999 0.019 0.078 0.076 0.064 99 2000 0.018 0.077 0.076 0.067 94 2001 0.022 0.083 0.081 0.065 99 2002 0.023 0.085 0.082 0.072 99 2003 0.023 0.085 0.078 0.068 99 2004 0.021 0.076 0.076 0.063 99 2005 0.022 0.084 0.083 0.070 99 2006 0.025 0.082 0.082 0.073 99 2007 0.025 0.079 0.079 0.067 99 2008 0.026 0.078 0.074 0.065 99 2009 0.029* 0.082 0.079 0.066 99 * Annual average based on a limited number of samples. ** Site was relocated to improved sampling location. Downtown site closed 08-13-2009 32 OZONE ARTHUR PACK1 Annual Average (ppm) YEAR % Data Recovery 1- Hr. Average (ppm) 1st Maximum 2nd Maximum 1979 0.033* 0.104 0.097 55 1980 0.033 0.092 0.088 79 1981 0.035 0.095 0.090 89 1982 0.033 0.117 0.104 76 1983 0.027* 0.090 0.088 51 1984 0.027* 0.069 0.067 18 1989 0.027 0.094 0.083 80 1990 0.027* 0.079 0.074 39 SILVERBELL2 * Annual average based on a limited number of samples. 1 Arther Pack closed 1985 2 Silverbell closed June 30, 1990. 33 OZONE SABINO CANYON 1 Annual Average (ppm) 1- Hr. Average (ppm) 1st Maximum 2ndMaximum % Data Recovery Year 1986 -- 0.094 0.085 -- 1987 -- 0.082 0.078 -- 1988 0.029 0.081 0.080 67 1989 0.031 0.094 0.089 81 1990 0.035 0.092 0.088 85 1991 0.030 0.084 0.082 93 1992 0.028 0.090 0.075 97 1993 0.028 0.096 0.081 99 1994 0.027 0.081 0.077 100 1995 0.026 0.078 0.077 97 1996 0.031 0.077 0.076 75 1980 0.025* 0.108 0.106 74 1981 0.028 0.095 0.095 89 1982 0.029 0.130 0.124 89 1983 0.025 0.121 0.108 80 1984 0.026 0.113 0.101 88 1985 0.025 0.110 0.103 92 1986 0.021 0.084 0.082 87 1987 0.022 0.119 0.087 85 1988 0.021 0.087 0.086 92 1989 0.026 0.094 0.088 75 1990 0.026 0.098 0.093 94 1991 0.025 0.082 0.079 95 1992 0.022 0.086 0.084 94 1993 0.023 0.093 0.089 98 1994 0.024 0.086 0.085 98 1995 0.024 0.102 0.097 98 1996 0.030 0.093 0.091 98 POMONA 2 * Annual average based on a limited number of samples. 1 Sabino Canyon closed June 1996 2 Pomona closed August 1996 34 NITROGEN DIOXIDE 22nd / CRAYCROFT YEAR Annual Average (ppm) Maximum 1-hr Average (ppm) Maximum 24-hr Average (ppm) % Data Recovery 1975 0.028 0.120 0.060 88 1976 0.027 0.130 0.056 89 1977 0.026 0.120 0.050 95 1978 0.022 0.090 0.049 78 1979 0.015 0.070 0.038 56 1980 0.023 0.170 0.062 71 1981 0.029 0.240 0.060 82 1982 0.021 0.140 0.058 82 1983 0.020 0.120 0.042 90 1984 0.019 0.130 0.071 86 1985 0.016 0.100 0.035 94 1986 0.019 0.160 0.050 52 1987 0.019 0.194 0.060 76 1988 0.017 0.125 0.038 90 1989 0.018 0.088 0.045 96 1990 0.019 0.114 0.049 93 1991 0.018 0.075 0.074 92 1992 0.016 0.068 0.038 98 1993 0.018 0.069 0.038 93 1994 0.019 0.073 0.038 96 1995 0.019 0.071 0.038 89 1996 0.018 0.068 0.036 94 1997 0.019 0.068 0.034 99 1998 0.017 0.059 0.037 98 1999 0.018 0.063 0.036 99 2000 0.017 0.075 0.035 97 2001 0.015 0.060 0.031 93 2002 0.017 0.062 0.034 98 2003 0.017 0.062 0.036 97 2004 0.015 0.059 0.031 99 2005 0.015 0.056 0.031 99 2006 0.016 0.051 0.029 99 2007 0.013 0.058 0.056 99 2008 0.013 0.054 0.028 98 2009 0.012 0.050 0.028 99 35 NITROGEN DIOXIDE 22nd / CRAYCROFT YEAR Annual Average (ppb) Maximum 1-hr Average (ppb) 98th Percentile Value % Data Recovery 2010 11.6 63.7 46.2 99 2011 12.0 50.5 47.0 99 2012 11.1 51.6 47.0 98 2013 9.68 48.1 43.7 99 2010 Nitrogen Dioxide reported in parts per billion (ppb) NITROGEN DIOXIDE CHILDREN’S PARK YEAR Annual Average (ppm) Maximum 1-hr Average (ppm) Maximum 24-hr Average (ppm) % Data Recovery 1998 0.016* 0.061 0.036 64 1999 0.019 0.070 0.036 92 2000 0.016 0.062 0.033 99 2001 0.017 0.058 0.031 99 2002 0.017 0.062 0.034 98 2003 0.017 0.056 0.034 98 2004 0.016 0.063 0.033 99 2005 0.015 0.049 0.029 99 2006 0.015 0.054 0.033 98 2007 0.013 0.049 0.049 92 2008 0.011 0.049 0.027 96 2009 0.010 0.043 0.025 96 36 NITROGEN DIOXIDE CHILDREN’S PARK YEAR Annual Average (ppb) Maximum 1-hr Average (ppb) 98th Percentile Value % Data Recovery 2010 10.0 45.0 40.0 97 2011 11.6 46.1 42.2 97 2012 13.4 46.4 44.4 80 2013 10.9 44.6 39.7 99 2010 Nitrogen Dioxide reported in parts per billion (ppb) NITROGEN DIOXIDE DOWNTOWN YEAR Annual Average (ppm) Maximum 1hr Average (ppm) Maximum 24hr Average (ppm) % Data Recovery 1975 0.032 0.250 0.084 55 1976 0.027 0.240 0.073 99 1977 0.032 0.150 0.057 95 1978 0.031 0.230 0.074 97 1979 0.025* 0.140 0.052 65 1980 0.036* 0.220 0.128 84 1981 0.037 0.210 0.076 95 1982 0.036 0.270 0.111 83 1983 0.032 0.240 0.111 33 1984 0.026 0.120 0.048 52 1985 0.024 0.110 0.044 48 1986 0.023 0.083 0.054 61 1987 ** -- -- -- 1988 -- -- -- -- 1989 0.027* 0.079 0.043 26 1990 0.027* 0.116 0.047 28 1991 0.024* 0.056 0.045 5 1992 0.025 0.092 0.043 97 1993 0.028 0.074 0.042 67 site closed 1994 * Annual average based on a limited number of samples. ** Site discontinued in 1987, restarted in 1989. 37 NITROGEN DIOXIDE SILVERBELL2 YEAR Maximum 1-hr Average (ppm) Maximum 24-hr Average (ppm) % Data Recovery 1989 Annual Average (ppm) 0.020 0.089 0.041 69 1990 0.020* 0.073 0.033 45 POMONA1 1988 -- * 0.080 0.039 56 1989 0.023 0.093 0.056 68 1990 0.022 0.097 0.042 83 1991 0.024* 0.095 0.085 56 1992 0.023 0.092 0.054 91 1993 0.022 0.081 0.044 91 1994 0.021 0.095 0.041 98 1995 0.020 0.078 0.038 99 1996 0.019* 0.075 0.037 58 SAGUARO PARK EAST3 2001 0.006* 0.039 * Annual average based on a limited number of samples. 1 Pomona site discontinued August 1996. 2 Silverbell site discontinued 1991 3 Monitoring only from 04/10/2001 to 12/10/2001 38 0.024 67 NON-METHANE HYDROCARBONS State and Federal Standard Primary & Secondary 3-Hr. Average (6 - 9 a.m.) 160 mg/m3 DOWNTOWN Year Annual Average Maximum 3-Hr. 2nd Maximum 3-Hr. # of Exceedances of Standards % Data Recovery 1975 149 828 806 136 82 1976 113 806 532 96 78 1977 86 435 436 51 74 1978 115* 604 414 89 67 1979 136* 534 519 116 64 1980 73* 399 364 37 74 1981 136* 676 589 76 43 1982 140* 523 469 28 17 ** ----1983 * Annual average based on limited number of samples. ** Non-methane hydrocarbons monitoring discontinued in February 1983, when Federal Standard was rescinded. 39 SULFUR DIOXIDE State and Federal Standards Primary and Secondary Primary Annual Average 0.03 ppm Primary 24-Hr Average 0.14 ppm Secondary 3-Hr Average 0.50 ppm Year Annual Average Maximum 24Hr. Maximum 3Hr. % Data Recovery 1973 1974 -0.004* -0.035 -0.016 -28 1975 0.003 0.097 0.036 85 1976 0.003 0.070 0.021 91 1977 0.003 0.053 0.022 83 1978 0.002 0.060 0.016 77 1979 0.002 0.044 0.012 81 1980 0.001 0.040 0.010 82 1981 0.002* 0.050 0.013 29 DOWNTOWN SITE DISCONTINUED 1982 TANQUE VERDE LOOP 1975 0.004* 0.015 0.050 21 1976 0.002 0.042 0.100 80 1977 0.001 0.026 0.120 95 1978 0.001* 0.014 0.070 73 1979 0.001 0.011 0.037 86 1980 0.002* 0.021 0.060 51 1981 0.002 0.027 0.133 86 1982 0.002* 0.015 0.073 45 1983 0.003 0.028 0.040 69 1984 0.001 0.008 0.023 61 1985 0.001 0.008 0.020 25 1986 SITE DISCONTINUED NOTE : Total sulfur reported as Sulfur Dioxide equivalent. * Annual average based on limited number of samples. 40 SULFUR DIOXIDE 22ND / CRAYCROFT Year Maximum 24-Hr. (ppm) 0.019 Maximum 3-Hr. (ppm) 0.060 % Data Recovery 1975 Annual Average (ppm) 0.001 1976 0.002 0.015 0.053 90 1977 0.002 0.020 0.057 81 1978 0.001 0.014 0.053 93 1979 0.002 0.020 0.080 97 1980 0.001 0.013 0.030 81 1981 0.003 0.024 0.083 92 1982 0.002* 0.019 0.060 50 1983 0.001 0.016 0.070 95 1984 0.003 0.028 0.060 85 1985 0.005 0.025 0.090 97 1986 0.004 0.016 0.031 70 1987 0.003 0.013 0.061 69 1988 0.002 0.011 0.077 65 1989 0.002 0.007 0.013 78 1990 0.002 0.008 0.020 97 1991 0.002 0.009 0.015 97 1992 0.002 0.007 0.061 98 1993 0.002 0.005 0.022 97 1994 0.002 0.004 0.010 85 1995 0.001 0.004 0.012 98 1996 0.001 0.004 0.009 98 1997 0.002 0.005 0.015 87 1998 0.002 0.005 0.016 99 1999 0.002 0.005 0.012 97 2000 0.002 0.008 0.011 97 2001 0.001 0.003 0.006 99 2002 0.001 0.004 0.019 99 2003 0.001 0.004 0.013 99 2004 0.001 0.006 0.012 99 2005 0.001 0.004 0.010 99 2006 0.001 0.004 0.009 99 2007 0.001 0.003 0.013 99 2008 0.001 0.004 0.014 99 2009 0.001 0.002 0.005 99 88 0.001 0.002 0.007 99 2010 ** NOTE :Total sulfur reported as Sulfur Dioxide equivalent. * Annual average based on limited number of samples. ** Monitoring discontinued December, 2010. 41 SULFUR DIOXIDE CHILDREN’S PARK NCore 2010* Annual Average (ppb) 0.22 Maximum 1-Hr. (ppb) 3.0 Maximum 24-Hr. (ppb) 1.1 99th Percentile (ppb) 3.0 % Data Recovery 96 2011 0.28 12.4 1.4 5.9 97 2012 0.20 6.8 1.0 4.3 98 2013 0.24 7.5 1.1 6.6 99 Year Sampling began October 1, 2010 * Averages based on limited number of samples. SULFUR DIOXIDE Green Valley1,2 Year 2001 Annual Average (ppm) .000 Maximum 24Hr. (ppm) .000 Maximum 3Hr. (ppm) .002 1 Special Purpose site 2 Monitoring discontinued 05/21/2001, Averages based on limited number of samples. 42 % Data Recovery 38 WATER SOLUBLE SULFATES** No State or Federal Standards Annual Average in µg/m3 Site '88 '89 '86 '85 '84 '83 '82 '81 '80 '79 '78 '77 '76 Downtown* -- -- -- -- 4.9 4.9 3.5 4.7 4.1 4.3 5.1 5.1 4.5 South Tucson 3.9 4.2 5.1 5.2 5.0 5.3 3.4 5.5 4.3 4.4 5.4 5.6 4.6 Prince Rd. 3.8 5.1 7.4 5.2 4.9 5.3 3.8 4.7 4.6 4.3 5.7 5.4 -- Davis Monthan* -- -- -- -- -- -- -- 5.4 4.6 4.1 5.6 5.1 4.6 Corona de Tucson 2.7 3.4 4.1 3.2 4.3 3.4 2.1 -- -- -- -- -- -- Green Valley 3.3 4.3 4.7 4.3 5.3 3.5 2.4 4.3 3.4 3.8 4.2 4.0 3.8 Orange Grove 4.4 4.3 5.2 4.5 4.4 5.0 3.8 5.6 4.3 5.3 5.6 5.1 4.8 Alvernon / Ft. Lowell* -- -- -- 4.5 4.3 5.0 3.4 4.6 4.7 3.9 5.7 5.4 4.8 * Davis Monthan Site discontinued in 1982. Downtown Site discontinued in 1985. Alvernon / Ft. Lowell Site discontinued 1986. ** Discontinued sampling in 12/88. 43