- 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 27% over the past 16 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 26% (24-hour PM2.5) and 21% (annual PM2.5) over the last 14 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 18% (one-hour NO2) and 38% (annual NO2) over the last 16 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 62% over the last 16 years.
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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 72% (one-hour CO) and 74% (eight-hour CO) over the last 16 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.
- Collin County is the only county in Texas with lead values above the NAAQS.
- 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.
- In 2015, all monitors in Collin County are measuring 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 97% from the year of the center’s closing (2012) through 2016.
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Design values are ambient-monitored values that are health-based and established by the EPA. More info
