- Ozone is a chemical formed from emissions from things such as cars and industrial facilities.
- Ozone can cause breathing problems, especially for children, the elderly, and those who have asthma.
- Ozone in Texas has decreased by 28% over the past 17 years.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
- PM2.5 are small particles that are either emitted into the air from dust, fires, and industrial processes, or formed from other chemicals emitted from cars, trucks, and power plants.
- PM2.5 can cause heart or breathing problems especially for those with asthma, heart disease, or children and elderly.
- PM2.5 in Texas has decreased by 24% for both 24-hour PM2.5 and annual PM2.5 over the last 15 years.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
- NO2 is a gas that is emitted into the air from cars, trucks, power plants, and off-road machinery.
- NO2 can cause breathing problems especially for those with asthma, or children and elderly.
- NO2 in Texas has decreased by 17% (one-hour NO2) and 42% (annual NO2) over the last 17 years.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
- SO2 is a gas that is emitted into the air from power plants and other sources than burn fuels that contain sulfur.
- SO2 can cause breathing problems especially for those with asthma, or children and elderly.
- SO2 in Texas has decreased by 77% over the last 17 years.
- Note that several new source orientated monitors were installed in 2016 and 2017. These monitors do not yet have valid SO2 design values.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
- CO is a gas that is emitted into the air from cars, trucks, and other combustion processes.
- CO reduces the amount of oxygen delivered into your body and can cause death at high levels.
- CO in Texas has decreased by 78% (one-hour CO) and 72% (eight-hour CO) over the last 17 years.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
- Lead (Pb) is a metal found naturally in the environment or emitted directly from industrial sources or lead-containing fuels.
- Lead exposure can lead to a variety of problems. The most common problems are neurological effects in children and cardiovascular effects in adults.
- The source of lead emissions in Collin county is the Exide Frisco Recycling Center, which was a lead acid battery recycling complex. Exide Frisco ceased operations beginning on 11/1/2012.
- Since 2015, all monitors in Collin County have measured attainment of the 2008 Lead NAAQS.
- The lead design value the Frisco Eubanks monitor, the monitor located closest to the former Excide Frisco Recycling Center, has decreased 99% from the year of the center’s closing (2012) through 2017.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
