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HomeMy WebLinkAboutAir PM Results January 2024Monday, January 1, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for �nhealthy Very Unhealthy • • (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) (425-504) EL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/1/2024 8 AM Matter 15 Level of Concern Good Fire Station 37 1/1/2024 8 AM 20 Good Hangar Fenceline - E Side 1/1/2024 8 AM 13 Good Hangar Fenceline - N Center 1/1/2024 8 AM 20 Good Hangar Fenceline - N Corner 1/1/2024 8 AM 17 Good Hangar Fenceline - NE Corner 1/1/2024 8 AM 16 Good Hangar Fenceline - NE Side 1/1/2024 8 AM 21 Good Hangar Fenceline - S Corner 1/1/2024 8 AM 16 Good Hangar Fenceline - S Side 1/1/2024 8 AM 16 Good Hangar Fenceline - SW Corner 1/1/2024 8 AM 16 Good Hangar Fenceline - SW Side 1/1/2024 8 AM 17 Good Hangar Fenceline - W Side 1/1/2024 8 AM 15 Good Heritage Elementary 1/1/2024 8 AM 20 Good Legacy Academy 1/1/2024 8 AM 15 Good Legacy Road 1/1/2024 8 AM 17 Good Moffett and Tustin Ranch 1/1/2024 8 AM 18 Good OC Animal Shelter 1/1/2024 8 AM 20 Good Valencia and Armstrong 1/1/2024 8 AM 17 Good Valencia and Columbus Square 1/1/2024 8 AM 14 Good Valencia and Legacy 1/1/2024 8 AM 11 Good Victory and Tustin Ranch Rd. 1/1/2024 8 AM 14 Good Warner and Armstrong 1/1/2024 8 AM 11 Good Warner Avenue 1/1/2024 8 AM 15 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Tuesday, January 2, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for �nhealthy Very Unhealthy • • (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) (425-504) EL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/2/2024 8 AM Matter 9 Level of Concern Good Fire Station 37 1/2/2024 8 AM 11 Good Hangar Fenceline - E Side 1/2/2024 8 AM 12 Good Hangar Fenceline - N Center 1/2/2024 8 AM 11 Good Hangar Fenceline - N Corner 1/2/2024 8 AM 10 Good Hangar Fenceline - NE Corner 1/2/2024 8 AM 11 Good Hangar Fenceline - NE Side 1/2/2024 8 AM 17 Good Hangar Fenceline - S Corner 1/2/2024 8 AM 11 Good Hangar Fenceline - S Side 1/2/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/2/2024 8 AM 11 Good Hangar Fenceline - SW Side 1/2/2024 8 AM 12 Good Hangar Fenceline - W Side 1/2/2024 8 AM 7 Good Heritage Elementary 1/2/2024 8 AM 12 Good Legacy Academy 1/2/2024 8 AM 10 Good Legacy Road 1/2/2024 8 AM 12 Good Moffett and Tustin Ranch 1/2/2024 8 AM 15 Good OC Animal Shelter 1/2/2024 8 AM 11 Good Valencia and Armstrong 1/2/2024 7 AM 9 Good Valencia and Columbus Square 1/2/2024 8 AM 9 Good Valencia and Legacy 1/2/2024 8 AM 9 Good Victory and Tustin Ranch Rd. 1/2/2024 8 AM 12 Good Warner and Armstrong 1/2/2024 8 AM 8 Good Warner Avenue 1/2/2024 8 AM 14 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Wednesday, January 3, 2024 North Hangar Fire Incident I City of Tustin Aik quality updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/3/2024 8 AM Matter 11 Level of • Good Fire Station 37 1/3/2024 8 AM 14 Good Hangar Fenceline - E Side 1/3/2024 8 AM 14 Good Hangar Fenceline - N Center 1/3/2024 8 AM 16 Good Hangar Fenceline - N Corner 1/3/2024 8 AM 14 Good Hangar Fenceline - NE Corner 1/3/2024 8 AM 14 Good Hangar Fenceline - NE Side 1/3/2024 8 AM 20 Good Hangar Fenceline - S Corner 1/3/2024 8 AM 14 Good Hangar Fenceline - S Side 1/3/2024 8 AM 13 Good Hangar Fenceline - SW Corner 1/3/2024 8 AM 15 Good Hangar Fenceline - SW Side 1/3/2024 8 AM 14 Good Hangar Fenceline - W Side 1/3/2024 7 AM 11 Good Heritage Elementary 1/3/2024 8 AM 13 Good Legacy Academy 1/3/2024 8 AM 15 Good Legacy Road 1/3/2024 8 AM 15 Good Moffett and Tustin Ranch 1/3/2024 8 AM 21 Good OC Animal Shelter 1/3/2024 8 AM 16 Good Valencia and Armstrong 1/3/2024 7 AM 12 Good Valencia and Columbus Square 1/3/2024 7 AM 10 Good Valencia and Legacy 1/3/2024 8 AM 11 Good Victory and Tustin Ranch Rd. 1/3/2024 8 AM 15 Good Warner and Armstrong 1/3/2024 4 AM 10 Good Warner Avenue 1/3/2024 8 AM 15 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Thursday, January 4, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/4/2024 8 AM Matter 5 Level of • Good Fire Station 37 1/4/2024 8 AM 6 Good Hangar Fenceline - E Side 1/4/2024 8 AM 6 Good Hangar Fenceline - N Center 1/4/2024 8 AM 6 Good Hangar Fenceline - N Corner 1/4/2024 8 AM 6 Good Hangar Fenceline - NE Corner 1/4/2024 8 AM 7 Good Hangar Fenceline - NE Side 1/4/2024 8 AM 7 Good Hangar Fenceline - S Corner 1/4/2024 8 AM 6 Good Hangar Fenceline - S Side 1/4/2024 8 AM 7 Good Hangar Fenceline - SW Corner 1/4/2024 7 AM 6 Good Hangar Fenceline - SW Side 1/4/2024 8 AM 8 Good Hangar Fenceline - W Side 1/4/2024 8 AM 7 Good Heritage Elementary 1/4/2024 8 AM 10 Good Legacy Academy 1/4/2024 8 AM 6 Good Legacy Road 1/4/2024 8 AM 7 Good Moffett and Tustin Ranch 1/4/2024 8 AM 9 Good OC Animal Shelter 1/4/2024 8 AM 8 Good Valencia and Armstrong 1/4/2024 7 AM 6 Good Valencia and Columbus Square 1/4/2024 8 AM 4 Good Valencia and Legacy 1/4/2024 8 AM 7 Good Victory and Tustin Ranch Rd. 1/4/2024 8 AM 7 Good Warner and Armstrong 1/4/2024 8 AM 3 Good Warner Avenue 1/4/2024 8 AM 7 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Friday, January 5, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Sensitive Groups IL(155 to 254) W Unhealthy (255 to 354) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Very Unhealthy (355 to 424) Location Columbus Square Park 24-Hour Period Ending 1/5/2024 8 AM Matter 7 Level of • Good Fire Station 37 1/5/2024 8 AM 10 Good Hangar Fenceline - E Side 1/5/2024 8 AM 7 Good Hangar Fenceline - N Center 1/5/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/5/2024 8 AM 9 Good Hangar Fenceline - NE Corner 1/5/2024 8 AM 8 Good Hangar Fenceline - NE Side 1/5/2024 8 AM 11 Good Hangar Fenceline - S Corner 1/5/2024 8 AM 8 Good Hangar Fenceline - S Side 1/5/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/5/2024 7 AM 8 Good Hangar Fenceline - SW Side 1/5/2024 8 AM 8 Good Hangar Fenceline - W Side 1/5/2024 8 AM 8 Good Heritage Elementary 1/5/2024 8 AM 10 Good Legacy Academy 1/5/2024 8 AM 9 Good Legacy Road 1/5/2024 8 AM 10 Good Moffett and Tustin Ranch 1/5/2024 8 AM 15 Good OC Animal Shelter 1/5/2024 8 AM 11 Good Valencia and Armstrong 1/5/2024 7 AM 7 Good Valencia and Columbus Square 1/5/2024 8 AM 7 Good Valencia and Legacy 1/5/2024 8 AM 10 Good Victory and Tustin Ranch Rd. 1/5/2024 8 AM 10 Good Warner and Armstrong 1/5/2024 8 AM 7 Good Warner Avenue 1/5/2024 8 AM 12 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Saturday, January 6, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/6/2024 8 AM Matter 14 Level of • Good Fire Station 37 1/6/2024 8 AM 18 Good Hangar Fenceline - E Side 1/6/2024 8 AM 18 Good Hangar Fenceline - N Center 1/6/2024 8 AM 22 Good Hangar Fenceline - N Corner 1/6/2024 8 AM 20 Good Hangar Fenceline - NE Corner 1/6/2024 8 AM 17 Good Hangar Fenceline - NE Side 1/6/2024 8 AM 19 Good Hangar Fenceline - S Corner 1/6/2024 8 AM 18 Good Hangar Fenceline - S Side 1/6/2024 8 AM 20 Good Hangar Fenceline - SW Corner 1/6/2024 8 AM 19 Good Hangar Fenceline - SW Side 1/6/2024 8 AM 23 Good Hangar Fenceline - W Side 1/6/2024 8 AM 19 Good Heritage Elementary 1/6/2024 8 AM 19 Good Legacy Academy 1/6/2024 8 AM 20 Good Legacy Road 1/6/2024 8 AM 21 Good Moffett and Tustin Ranch 1/6/2024 8 AM 30 Good OC Animal Shelter 1/6/2024 8 AM 22 Good Valencia and Armstrong 1/6/2024 8 AM 17 Good Valencia and Columbus Square 1/6/2024 8 AM 16 Good Valencia and Legacy 1/6/2024 8 AM 22 Good Victory and Tustin Ranch Rd. 1/6/2024 8 AM 24 Good Warner and Armstrong 1/6/2024 8 AM 12 Good Warner Avenue 1/6/2024 8 AM 22 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Sunday, January 7, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/7/2024 8 AM Matter 8 Level of • Good Fire Station 37 1/7/2024 8 AM 9 Good Hangar Fenceline - E Side 1/7/2024 8 AM 7 Good Hangar Fenceline - N Center 1/7/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/7/2024 8 AM 8 Good Hangar Fenceline - NE Corner 1/7/2024 8 AM 8 Good Hangar Fenceline - NE Side 1/7/2024 8 AM 10 Good Hangar Fenceline - S Corner 1/7/2024 8 AM 7 Good Hangar Fenceline - S Side 1/7/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/7/2024 8 AM 8 Good Hangar Fenceline - SW Side 1/7/2024 8 AM 9 Good Hangar Fenceline - W Side 1/7/2024 8 AM 9 Good Heritage Elementary 1/7/2024 8 AM 8 Good Legacy Academy 1/7/2024 8 AM 9 Good Legacy Road 1/7/2024 8 AM 10 Good Moffett and Tustin Ranch 1/7/2024 8 AM 16 Good OC Animal Shelter 1/7/2024 8 AM 10 Good Valencia and Armstrong 1/7/2024 8 AM 6 Good Valencia and Columbus Square 1/7/2024 8 AM 7 Good Valencia and Legacy 1/7/2024 8 AM 10 Good Victory and Tustin Ranch Rd. 1/7/2024 8 AM 13 Good Warner and Armstrong 1/7/2024 8 AM 5 Good Warner Avenue 1/7/2024 8 AM 13 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Monday, January 8, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/8/2024 8 AM Matter 5 Level of • Good Fire Station 37 1/8/2024 8 AM 6 Good Hangar Fenceline - E Side 1/8/2024 8 AM 6 Good Hangar Fenceline - N Center 1/8/2024 8 AM 7 Good Hangar Fenceline - N Corner 1/8/2024 8 AM 6 Good Hangar Fenceline - NE Corner 1/8/2024 8 AM 5 Good Hangar Fenceline - NE Side 1/8/2024 7 AM 4 Good Hangar Fenceline - S Corner 1/8/2024 8 AM 5 Good Hangar Fenceline - S Side 1/8/2024 8 AM 7 Good Hangar Fenceline - SW Corner 1/8/2024 8 AM 6 Good Hangar Fenceline - SW Side 1/8/2024 8 AM 8 Good Hangar Fenceline - W Side 1/8/2024 8 AM 6 Good Heritage Elementary 1/8/2024 8 AM 6 Good Legacy Academy 1/8/2024 7 AM 6 Good Legacy Road 1/8/2024 8 AM 6 Good Moffett and Tustin Ranch 1/8/2024 8 AM 7 Good OC Animal Shelter 1/8/2024 8 AM 7 Good Valencia and Armstrong 1/8/2024 7 AM 6 Good Valencia and Columbus Square 1/8/2024 8 AM 5 Good Valencia and Legacy 1/8/2024 8 AM 5 Good Victory and Tustin Ranch Rd. 1/8/2024 8 AM 7 Good Warner and Armstrong 1/8/2024 8 AM 5 Good Warner Avenue 1/8/2024 8 AM 6 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Tuesday, January 9, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/9/2024 8 AM Matter 5 Level of • Good Fire Station 37 1/9/2024 8 AM 6 Good Hangar Fenceline - E Side 1/9/2024 8 AM 7 Good Hangar Fenceline - N Center 1/9/2024 8 AM 6 Good Hangar Fenceline - N Corner 1/9/2024 8 AM 6 Good Hangar Fenceline - NE Corner 1/9/2024 8 AM 7 Good Hangar Fenceline - NE Side 1/9/2024 8 AM 7 Good Hangar Fenceline - S Corner 1/9/2024 8 AM 9 Good Hangar Fenceline - S Side 1/9/2024 8 AM 6 Good Hangar Fenceline - SW Corner 1/9/2024 7 AM 7 Good Hangar Fenceline - SW Side 1/9/2024 8 AM 6 Good Hangar Fenceline - W Side 1/9/2024 8 AM 6 Good Heritage Elementary 1/9/2024 8 AM 7 Good Legacy Academy 1/9/2024 8 AM 6 Good Legacy Road 1/9/2024 8 AM 6 Good Moffett and Tustin Ranch 1/9/2024 8 AM 10 Good OC Animal Shelter 1/9/2024 8 AM 8 Good Valencia and Armstrong 1/9/2024 7 AM 7 Good Valencia and Columbus Square 1/9/2024 8 AM 5 Good Valencia and Legacy 1/9/2024 8 AM 5 Good Victory and Tustin Ranch Rd. 1/9/2024 8 AM 9 Good Warner and Armstrong 1/9/2024 8 AM 4 Good Warner Avenue 1/9/2024 8 AM 8 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Wednesday, January 10, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy u Sensitive GrouUnhealthy Very Unhealthy • •us (0 to 54) (55 to 154) ps (155 to 254) (255 to 354) (355 to 424) (425-504)* See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Columbus Square Park PeriodLocation 24-Hour Ending 1/10/2024 8 AM Particulate Matter • 6 Level of Concern Good Fire Station 37 1/10/2024 8 AM 8 Good Hangar Fenceline - E Side 1/10/2024 8 AM 7 Good Hangar Fenceline - N Center 1/10/2024 8 AM 8 Good Hangar Fenceline - N Corner 1/10/2024 8 AM 8 Good Hangar Fenceline - NE Corner 1/10/2024 8 AM 7 Good Hangar Fenceline - NE Side 1/10/2024 8 AM 9 Good Hangar Fenceline - S Corner 1/10/2024 8 AM 9 Good Hangar Fenceline - S Side 1/10/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/10/2024 8 AM 7 Good Hangar Fenceline - SW Side 1/10/2024 8 AM 8 Good Hangar Fenceline - W Side 1/10/2024 8 AM 9 Good Heritage Elementary ** ** ** Legacy Academy 1/10/2024 8 AM 9 Good Legacy Road 1/10/2024 8 AM 8 Good Moffett and Tustin Ranch 1/10/2024 8 AM 14 Good OC Animal Shelter 1/10/2024 8 AM 10 Good Valencia and Armstrong 1/10/2024 8 AM S Good Valencia and Columbus Square 1/10/2024 8 AM 4 Good Valencia and Legacy 1/10/2024 8 AM 8 Good Victory and Tustin Ranch Rd. 1/10/2024 8 AM 12 Good Warner and Armstrong 1/10/2024 8 AM 6 Good Warner Avenue 1/10/2024 8 AM 10 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. Thursday, January 11, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) 155 to 254) �( See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/11/2024 8 AM Matter 9 Level of • Good Fire Station 37 1/11/2024 8 AM 7 Good Hangar Fenceline - E Side 1/11/2024 8 AM 9 Good Hangar Fenceline - N Center 1/11/2024 8 AM 10 Good Hangar Fenceline - N Corner 1/11/2024 8 AM 9 Good Hangar Fenceline - NE Corner 1/11/2024 8 AM 11 Good Hangar Fenceline - NE Side 1/11/2024 8 AM 15 Good Hangar Fenceline - S Corner 1/11/2024 8 AM 11 Good Hangar Fenceline - S Side 1/11/2024 8 AM 13 Good Hangar Fenceline - SW Corner 1/11/2024 8 AM 10 Good Hangar Fenceline - SW Side 1/11/2024 8 AM 10 Good Hangar Fenceline - W Side 1/11/2024 8 AM 11 Good Heritage Elementary 1/11/2024 8 AM 9 Good Legacy Academy 1/11/2024 8 AM 11 Good Legacy Road 1/11/2024 8 AM 10 Good Moffett and Tustin Ranch 1/11/2024 8 AM 17 Good OC Animal Shelter 1/11/2024 8 AM 13 Good Valencia and Armstrong 1/11/2024 8 AM 8 Good Valencia and Columbus Square 1/11/2024 8 AM 8 Good Valencia and Legacy 1/11/2024 8 AM 11 Good Victory and Tustin Ranch Rd. 1/11/2024 8 AM 13 Good Warner and Armstrong 1/11/2024 8 AM 5 Good Warner Avenue 1/11/2024 8 AM 14 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Friday, January 12, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy u Sensitive GrouUnhealthy Very Unhealthy • •us (0 to 54) (55 to 154) ps (155 to 254) (255 to 354) (355 to 424) (425-504)* See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Columbus Square Park PeriodLocation 24-Hour Ending 1/12/2024 8 AM Particulate Matter • 4 Level of Concern Good Fire Station 37 1/12/2024 8 AM 5 Good Hangar Fenceline - E Side 1/12/2024 8 AM 6 Good Hangar Fenceline - N Center 1/12/2024 8 AM 6 Good Hangar Fenceline - N Corner 1/12/2024 8 AM 5 Good Hangar Fenceline - NE Corner 1/12/2024 8 AM 7 Good Hangar Fenceline - NE Side 1/12/2024 8 AM 8 Good Hangar Fenceline - S Corner 1/12/2024 8 AM 7 Good Hangar Fenceline - S Side 1/12/2024 8 AM 8 Good Hangar Fenceline - SW Corner 1/12/2024 8 AM 6 Good Hangar Fenceline - SW Side 1/12/2024 8 AM 5 Good Hangar Fenceline - W Side 1/12/2024 8 AM 5 Good Heritage Elementary 1/12/2024 8 AM 6 Good Legacy Academy 1/12/2024 8 AM 6 Good Legacy Road 1/12/2024 8 AM 6 Good Moffett and Tustin Ranch 1/12/2024 8 AM 8 Good OC Animal Shelter 1/12/2024 8 AM 8 Good Valencia and Armstrong 1/12/2024 8 AM 5 Good Valencia and Columbus Square 1/12/2024 8 AM 4 Good Valencia and Legacy 1/12/2024 8 AM 6 Good Victory and Tustin Ranch Rd. 1/12/2024 8 AM 9 Good Warner and Armstrong 1/12/2024 8 AM 3 Good Warner Avenue 1/12/2024 8 AM 7 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. Hazardous 425 "to504 arning of emergency Maroon - conditions: ever. . likely ..- affected. Saturday, January 13, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/13/2024 8 AM Matter 7 Level of • Good Fire Station 37 1/13/2024 8 AM 9 Good Hangar Fenceline - E Side 1/13/2024 8 AM 7 Good Hangar Fenceline - N Center 1/13/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/13/2024 8 AM 8 Good Hangar Fenceline - NE Corner 1/13/2024 8 AM 8 Good Hangar Fenceline - NE Side 1/13/2024 8 AM 9 Good Hangar Fenceline - S Corner 1/13/2024 8 AM 9 Good Hangar Fenceline - S Side 1/13/2024 8 AM 11 Good Hangar Fenceline - SW Corner 1/13/2024 8 AM 8 Good Hangar Fenceline - SW Side 1/13/2024 8 AM 8 Good Hangar Fenceline - W Side 1/13/2024 8 AM 8 Good Heritage Elementary 1/13/2024 8 AM 8 Good Legacy Academy 1/13/2024 8 AM 9 Good Legacy Road 1/13/2024 8 AM 7 Good Moffett and Tustin Ranch 1/13/2024 8 AM 13 Good OC Animal Shelter 1/13/2024 8 AM 13 Good Valencia and Armstrong 1/13/2024 8 AM 7 Good Valencia and Columbus Square 1/13/2024 8 AM 6 Good Valencia and Legacy 1/13/2024 8 AM 8 Good Victory and Tustin Ranch Rd. 1/13/2024 8 AM 12 Good Warner and Armstrong 1/13/2024 8 AM 6 Good Warner Avenue 1/13/2024 8 AM 13 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Sunday, January 14, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) 155 to 254) �( See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/14/2024 8 AM Matter 9 Level of • Good Fire Station 37 1/14/2024 8 AM 12 Good Hangar Fenceline - E Side 1/14/2024 8 AM 14 Good Hangar Fenceline - N Center 1/14/2024 8 AM 15 Good Hangar Fenceline - N Corner 1/14/2024 8 AM 14 Good Hangar Fenceline - NE Corner 1/14/2024 8 AM 13 Good Hangar Fenceline - NE Side 1/14/2024 8 AM 16 Good Hangar Fenceline - S Corner 1/14/2024 8 AM 15 Good Hangar Fenceline - S Side 1/14/2024 8 AM 17 Good Hangar Fenceline - SW Corner 1/14/2024 8 AM 15 Good Hangar Fenceline - SW Side 1/14/2024 8 AM 15 Good Hangar Fenceline - W Side 1/14/2024 8 AM 14 Good Heritage Elementary 1/14/2024 8 AM 12 Good Legacy Academy 1/14/2024 8 AM 16 Good Legacy Road 1/14/2024 8 AM 15 Good Moffett and Tustin Ranch 1/14/2024 8 AM 22 Good OC Animal Shelter 1/14/2024 8 AM 16 Good Valencia and Armstrong 1/14/2024 8 AM 10 Good Valencia and Columbus Square 1/14/2024 8 AM 10 Good Valencia and Legacy 1/14/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 1/14/2024 8 AM 18 Good Warner and Armstrong 1/14/2024 8 AM 13 Good Warner Avenue 1/14/2024 8 AM 19 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Monday, January 15, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for �nhealthy Very Unhealthy • • (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) (425-504) EL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/15/2024 8 AM Matter 13 Level of Concern Good Fire Station 37 1/15/2024 8 AM 15 Good Hangar Fenceline - E Side 1/15/2024 8 AM 15 Good Hangar Fenceline - N Center 1/15/2024 8 AM 18 Good Hangar Fenceline - N Corner 1/15/2024 8 AM 15 Good Hangar Fenceline - NE Corner 1/15/2024 8 AM 15 Good Hangar Fenceline - NE Side 1/15/2024 8 AM 16 Good Hangar Fenceline - S Corner 1/15/2024 8 AM 17 Good Hangar Fenceline - S Side 1/15/2024 8 AM 18 Good Hangar Fenceline - SW Corner 1/15/2024 8 AM 17 Good Hangar Fenceline - SW Side 1/15/2024 8 AM 18 Good Hangar Fenceline - W Side 1/15/2024 8 AM 16 Good Heritage Elementary 1/15/2024 8 AM 15 Good Legacy Academy 1/15/2024 8 AM 16 Good Legacy Road 1/15/2024 8 AM 18 Good Moffett and Tustin Ranch 1/15/2024 8 AM 23 Good OC Animal Shelter 1/15/2024 8 AM 18 Good Valencia and Armstrong 1/15/2024 8 AM 13 Good Valencia and Columbus Square 1/15/2024 8 AM 15 Good Valencia and Legacy 1/15/2024 8 AM 17 Good Victory and Tustin Ranch Rd. 1/15/2024 8 AM 18 Good Warner and Armstrong 1/15/2024 8 AM 12 Good Warner Avenue 1/15/2024 8 AM 18 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Tuesday, January 16, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/16/2024 8 AM Matter 33 Level of • Good Fire Station 37 1/16/2024 8 AM 42 Good Hangar Fenceline - E Side 1/16/2024 8 AM 44 Good Hangar Fenceline - N Center 1/16/2024 8 AM 49 Good Hangar Fenceline - N Corner 1/16/2024 8 AM 43 Good Hangar Fenceline - NE Corner 1/16/2024 8 AM 41 Good Hangar Fenceline - NE Side 1/16/2024 8 AM 47 Good Hangar Fenceline - S Corner 1/16/2024 8 AM 47 Good Hangar Fenceline - S Side 1/16/2024 8 AM 49 Good Hangar Fenceline - SW Corner 1/16/2024 8 AM 47 Good Hangar Fenceline - SW Side 1/16/2024 8 AM 49 Good Hangar Fenceline - W Side 1/16/2024 8 AM 43 Good Heritage Elementary 1/16/2024 8 AM 40 Good Legacy Academy 1/16/2024 8 AM 49 Good Legacy Road 1/16/2024 8 AM 51 Good Moffett and Tustin Ranch 1/16/2024 8 AM 66 Moderate OC Animal Shelter 1/16/2024 8 AM 48 Good Valencia and Armstrong 1/16/2024 8 AM 36 Good Valencia and Columbus Square 1/16/2024 8 AM 35 Good Valencia and Legacy 1/16/2024 8 AM 49 Good Victory and Tustin Ranch Rd. 1/16/2024 8 AM 51 Good Warner and Armstrong 1/16/2024 8 AM 30 Good Warner Avenue 1/16/2024 8 AM 52 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Wednesday, January 17, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) Columbus Square Park PeriodLocation 24-Hour Ending 1/17/2024 8 AM Particulate Matter 55 Level of Concern Moderate Fire Station 37 1/17/2024 8 AM 64 Moderate Hangar Fenceline - E Side 1/17/2024 8 AM 66 Moderate Hangar Fenceline - N Center 1/17/2024 8 AM 74 Moderate Hangar Fenceline - N Corner 1/17/2024 8 AM 67 Moderate Hangar Fenceline - NE Corner 1/17/2024 8 AM 65 Moderate Hangar Fenceline - NE Side 1/17/2024 8 AM 70 Moderate Hangar Fenceline - S Corner 1/17/2024 8 AM 69 Moderate Hangar Fenceline - S Side 1/17/2024 8 AM 72 Moderate Hangar Fenceline - SW Corner 1/17/2024 8 AM 72 Moderate Hangar Fenceline - SW Side 1/17/2024 8 AM 73 Moderate Hangar Fenceline - W Side 1/17/2024 8 AM 63 Moderate Heritage Elementary 1/17/2024 8 AM 64 Moderate Legacy Academy 1/17/2024 8 AM 75 Moderate Legacy Road 1/17/2024 8 AM 73 Moderate Moffett and Tustin Ranch 1/17/2024 8 AM 87 Moderate OC Animal Shelter 1/17/2024 8 AM 75 Moderate Valencia and Armstrong 1/17/2024 8 AM 59 Moderate Valencia and Columbus Square 1/17/2024 8 AM 55 Moderate Valencia and Legacy 1/17/2024 8 AM 73 Moderate Victory and Tustin Ranch Rd. 1/17/2024 8 AM 73 Moderate Warner and Armstrong 1/17/2024 8 AM 51 Good Warner Avenue 1/17/2024 8 AM 74 Moderate Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy Health alert: The risk of health "W*FIM veryone. Maroon Hazardous 425 to 504 Health warning of emergen=cy conditions: ever•ne is more likely to be affected. Thursday, January 18, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction, instrument replaced. Location Columbus Square Park 24-Hour Period Ending 1/18/2024 8 AM Matter 27 Level of • Good Fire Station 37 1/18/2024 8 AM 30 Good Hangar Fenceline - E Side 1/18/2024 8 AM 28 Good Hangar Fenceline - N Center 1/18/2024 8 AM 33 Good Hangar Fenceline - N Corner 1/18/2024 8 AM 29 Good Hangar Fenceline - NE Corner 1/18/2024 8 AM 29 Good Hangar Fenceline - NE Side 1/18/2024 8 AM 31 Good Hangar Fenceline - S Corner 1/18/2024 8 AM 31 Good Hangar Fenceline - S Side 1/18/2024 8 AM 32 Good Hangar Fenceline - SW Corner 1/18/2024 8 AM 29 Good Hangar Fenceline - SW Side 1/18/2024 8 AM 33 Good Hangar Fenceline - W Side 1/18/2024 8 AM 29 Good Heritage Elementary 1/18/2024 8 AM 28 Good Legacy Academy 1/18/2024 8 AM 32 Good Legacy Road 1/18/2024 8 AM 36 Good Moffett and Tustin Ranch 1/18/2024 8 AM 37 Good OC Animal Shelter 1/18/2024 8 AM 34 Good Valencia and Armstrong 1/18/2024 8 AM 26 Good Valencia and Columbus Square 1/18/2024 8 AM 23 Good Valencia and Legacy 1/18/2024 8 AM 34 Good Victory and Tustin Ranch Rd. 1/18/2024 8 AM 32 Good Warner and Armstrong 1/18/2024 8 AM 22 Good Warner Avenue 1/18/2024 8 AM 31 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Friday, January 19, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/19/2024 8 AM Particulate Matter 15 Level of Concern Good Fire Station 37 1/19/2024 8 AM 16 Good Hangar Fenceline - E Side 1/19/2024 8 AM 18 Good Hangar Fenceline - N Center 1/19/2024 8 AM 19 Good Hangar Fenceline - N Corner 1/19/2024 8 AM 17 Good Hangar Fenceline - NE Corner 1/19/2024 8 AM 18 Good Hangar Fenceline - NE Side 1/19/2024 8 AM 19 Good Hangar Fenceline - S Corner 1/19/2024 8 AM 20 Good Hangar Fenceline - S Side 1/19/2024 8 AM 20 Good Hangar Fenceline - SW Corner 1/19/2024 8 AM 18 Good Hangar Fenceline - SW Side 1/19/2024 8 AM 19 Good Hangar Fenceline - W Side 1/19/2024 8 AM 18 Good Heritage Elementary 1/19/2024 8 AM 17 Good Legacy Academy 1/19/2024 8 AM 20 Good Legacy Road 1/19/2024 8 AM 19 Good Moffett and Tustin Ranch 1/19/2024 8 AM 24 Good OC Animal Shelter 1/19/2024 8 AM 19 Good Valencia and Armstrong 1/19/2024 8 AM 15 Good Valencia and Columbus Square 1/19/2024 8 AM 13 Good Valencia and Legacy 1/19/2024 8 AM 20 Good Victory and Tustin Ranch Rd. 1/19/2024 8 AM 20 Good Warner and Armstrong 1/19/2024 8 AM 15 Good Warner Avenue 1/19/2024 8 AM 22 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely . •- -• Saturday, January 20, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very UnhealthyHazardous (0 to 54) (55 to 154) Sensitive Groups EL(155 to 254) (255 to 354) (355 to 424) See below for further category descriptions. Columbus Square Park PeriodLocation 24-Hour Ending 1/20/2024 8 AM Particulate Matter 34 Level of Concern Good Fire Station 37 1/20/2024 8 AM 34 Good Hangar Fenceline - E Side 1/20/2024 8 AM 38 Good Hangar Fenceline - N Center 1/20/2024 8 AM 44 Good Hangar Fenceline - N Corner 1/20/2024 8 AM 40 Good Hangar Fenceline - NE Corner 1/20/2024 8 AM 38 Good Hangar Fenceline - NE Side 1/20/2024 8 AM 41 Good Hangar Fenceline - S Corner 1/20/2024 8 AM 41 Good Hangar Fenceline - S Side 1/20/2024 8 AM 44 Good Hangar Fenceline - SW Corner 1/20/2024 8 AM 39 Good Hangar Fenceline - SW Side 1/20/2024 8 AM 45 Good Hangar Fenceline - W Side 1/20/2024 8 AM 37 Good Heritage Elementary 1/20/2024 8 AM 38 Good Legacy Academy 1/20/2024 8 AM 44 Good Legacy Road 1/20/2024 8 AM 40 Good Moffett and Tustin Ranch 1/20/2024 8 AM 50 Good OC Animal Shelter 1/20/2024 8 AM 44 Good Valencia and Armstrong 1/20/2024 8 AM 35 Good Valencia and Columbus Square 1/20/2024 8 AM 31 Good Valencia and Legacy 1/20/2024 8 AM 43 Good Victory and Tustin Ranch Rd. 1/20/2024 8 AM 39 Good Warner and Armstrong 1/20/2024 8 AM 32 Good Warner Avenue 1/20/2024 8 AM 43 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely . •- -• Sunday, January 21, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/21/2024 8 AM Particulate Matter 8 Level of Concern Good Fire Station 37 1/21/2024 8 AM 8 Good Hangar Fenceline - E Side 1/21/2024 8 AM 9 Good Hangar Fenceline - N Center 1/21/2024 8 AM 10 Good Hangar Fenceline - N Corner 1/21/2024 8 AM 9 Good Hangar Fenceline - NE Corner 1/21/2024 8 AM 9 Good Hangar Fenceline - NE Side 1/21/2024 8 AM 8 Good Hangar Fenceline - S Corner 1/21/2024 8 AM 9 Good Hangar Fenceline - S Side 1/21/2024 8 AM 9 Good Hangar Fenceline - SW Corner 1/21/2024 8 AM 9 Good Hangar Fenceline - SW Side 1/21/2024 8 AM 11 Good Hangar Fenceline - W Side 1/21/2024 8 AM 8 Good Heritage Elementary 1/21/2024 8 AM 8 Good Legacy Academy 1/21/2024 8 AM 9 Good Legacy Road 1/21/2024 8 AM 10 Good Moffett and Tustin Ranch 1/21/2024 8 AM 12 Good OC Animal Shelter 1/21/2024 8 AM 11 Good Valencia and Armstrong 1/21/2024 8 AM 8 Good Valencia and Columbus Square 1/21/2024 8 AM 7 Good Valencia and Legacy 1/21/2024 8 AM 11 Good Victory and Tustin Ranch Rd. 1/21/2024 8 AM 10 Good Warner and Armstrong 1/21/2024 8 AM 6 Good Warner Avenue 1/21/2024 8 AM 9 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Monday, January 22, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/22/2024 8 AM Particulate Matter 4 Level of Concern Good Fire Station 37 1/22/2024 8 AM 4 Good Hangar Fenceline - E Side 1/22/2024 8 AM 4 Good Hangar Fenceline - N Center 1/22/2024 8 AM 4 Good Hangar Fenceline - N Corner 1/22/2024 8 AM 4 Good Hangar Fenceline - NE Corner 1/22/2024 8 AM 6 Good Hangar Fenceline - NE Side 1/22/2024 8 AM 5 Good Hangar Fenceline - S Corner 1/22/2024 8 AM 6 Good Hangar Fenceline - S Side 1/22/2024 8 AM 6 Good Hangar Fenceline - SW Corner 1/22/2024 8 AM 5 Good Hangar Fenceline - SW Side 1/22/2024 8 AM 5 Good Hangar Fenceline - W Side 1/22/2024 8 AM 6 Good Heritage Elementary 1/22/2024 8 AM 4 Good Legacy Academy 1/22/2024 8 AM 5 Good Legacy Road 1/22/2024 8 AM 5 Good Moffett and Tustin Ranch 1/22/2024 8 AM 8 Good OC Animal Shelter 1/22/2024 8 AM 7 Good Valencia and Armstrong 1/22/2024 8 AM 3 Good Valencia and Columbus Square 1/22/2024 8 AM 3 Good Valencia and Legacy 1/22/2024 8 AM 6 Good Victory and Tustin Ranch Rd. 1/22/2024 8 AM 7 Good Warner and Armstrong 1/22/2024 8 AM 4 Good Warner Avenue 1/22/2024 8 AM 6 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Tuesday, January 23, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/23/2024 8 AM Particulate Matter 11 Level of Concern Good Fire Station 37 1/23/2024 8 AM 12 Good Hangar Fenceline - E Side 1/23/2024 8 AM 13 Good Hangar Fenceline - N Center 1/23/2024 8 AM 15 Good Hangar Fenceline - N Corner 1/23/2024 8 AM 14 Good Hangar Fenceline - NE Corner 1/23/2024 8 AM 14 Good Hangar Fenceline - NE Side 1/23/2024 8 AM 15 Good Hangar Fenceline - S Corner 1/23/2024 8 AM 15 Good Hangar Fenceline - S Side 1/23/2024 8 AM 14 Good Hangar Fenceline - SW Corner 1/23/2024 8 AM 14 Good Hangar Fenceline - SW Side 1/23/2024 8 AM 16 Good Hangar Fenceline - W Side 1/23/2024 8 AM 14 Good Heritage Elementary 1/23/2024 8 AM 14 Good Legacy Academy 1/23/2024 8 AM 16 Good Legacy Road 1/23/2024 8 AM 17 Good Moffett and Tustin Ranch 1/23/2024 8 AM 26 Good OC Animal Shelter 1/23/2024 8 AM 19 Good Valencia and Armstrong 1/23/2024 8 AM 12 Good Valencia and Columbus Square 1/23/2024 8 AM 10 Good Valencia and Legacy 1/23/2024 8 AM 17 Good Victory and Tustin Ranch Rd. 1/23/2024 8 AM 16 Good Warner and Armstrong 1/23/2024 8 AM 10 Good Warner Avenue 1/23/2024 8 AM 14 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely . •- -• Wednesday, January 24, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/24/2024 8 AM Particulate Matter 8 Level of Concern Good Fire Station 37 1/24/2024 8 AM 6 Good Hangar Fenceline - E Side 1/24/2024 8 AM 9 Good Hangar Fenceline - N Center 1/24/2024 8 AM 10 Good Hangar Fenceline - N Corner 1/24/2024 8 AM 9 Good Hangar Fenceline - NE Corner 1/24/2024 8 AM 10 Good Hangar Fenceline - NE Side 1/24/2024 8 AM 10 Good Hangar Fenceline - S Corner 1/24/2024 8 AM 10 Good Hangar Fenceline - S Side 1/24/2024 8 AM 11 Good Hangar Fenceline - SW Corner 1/24/2024 8 AM 10 Good Hangar Fenceline - SW Side 1/24/2024 8 AM 9 Good Hangar Fenceline - W Side 1/24/2024 8 AM 10 Good Heritage Elementary 1/24/2024 8 AM 9 Good Legacy Academy 1/24/2024 8 AM 11 Good Legacy Road 1/24/2024 8 AM 10 Good Moffett and Tustin Ranch 1/24/2024 8 AM 6 Good OC Animal Shelter 1/24/2024 8 AM 12 Good Valencia and Armstrong 1/24/2024 8 AM 8 Good Valencia and Columbus Square 1/24/2024 8 AM 8 Good Valencia and Legacy 1/24/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 1/24/2024 8 AM 14 Good Warner and Armstrong 1/24/2024 8 AM 8 Good Warner Avenue 1/24/2024 8 AM 7 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Thursday, January 25, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/25/2024 8 AM Particulate Matter 9 Level of Concern Good Fire Station 37 1/25/2024 8 AM 9 Good Hangar Fenceline - E Side 1/25/2024 8 AM 11 Good Hangar Fenceline - N Center 1/25/2024 8 AM 13 Good Hangar Fenceline - N Corner 1/25/2024 8 AM 12 Good Hangar Fenceline - NE Corner 1/25/2024 8 AM 12 Good Hangar Fenceline - NE Side 1/25/2024 8 AM 13 Good Hangar Fenceline - S Corner 1/25/2024 8 AM 12 Good Hangar Fenceline - S Side 1/25/2024 8 AM 13 Good Hangar Fenceline - SW Corner 1/25/2024 8 AM 12 Good Hangar Fenceline - SW Side 1/25/2024 8 AM 14 Good Hangar Fenceline - W Side 1/25/2024 8 AM 13 Good Heritage Elementary 1/25/2024 8 AM 11 Good Legacy Academy 1/25/2024 8 AM 14 Good Legacy Road 1/25/2024 8 AM 13 Good Moffett and Tustin Ranch 1/25/2024 8 AM 19 Good OC Animal Shelter 1/25/2024 8 AM 15 Good Valencia and Armstrong 1/25/2024 8 AM 8 Good Valencia and Columbus Square 1/25/2024 8 AM 13 Good Valencia and Legacy 1/2S/2024 8 AM 15 Good Victory and Tustin Ranch Rd. 1/25/2024 8 AM 16 Good Warner and Armstrong 1/25/2024 8 AM 8 Good Warner Avenue 1/25/2024 8 AM 16 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Friday, January 26, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/26/2024 8 AM Particulate Matter 7 Level of Concern Good Fire Station 37 1/26/2024 8 AM 7 Good Hangar Fenceline - E Side 1/26/2024 8 AM 8 Good Hangar Fenceline - N Center 1/26/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/26/2024 8 AM 7 Good Hangar Fenceline - NE Corner 1/26/2024 8 AM 8 Good Hangar Fenceline - NE Side 1/26/2024 8 AM 8 Good Hangar Fenceline - S Corner 1/26/2024 8 AM 9 Good Hangar Fenceline - S Side 1/26/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/26/2024 8 AM 9 Good Hangar Fenceline - SW Side 1/26/2024 8 AM 9 Good Hangar Fenceline - W Side 1/26/2024 8 AM 9 Good Heritage Elementary 1/26/2024 8 AM 8 Good Legacy Academy 1/26/2024 8 AM 9 Good Legacy Road 1/26/2024 8 AM 8 Good Moffett and Tustin Ranch 1/26/2024 8 AM 12 Good OC Animal Shelter 1/26/2024 8 AM 11 Good Valencia and Armstrong 1/26/2024 8 AM 7 Good Valencia and Columbus Square 1/26/2024 8 AM 7 Good Valencia and Legacy 1/26/2024 8 AM 10 Good Victory and Tustin Ranch Rd. 1/26/2024 8 AM 13 Good Warner and Armstrong 1/26/2024 8 AM 6 Good Warner Avenue 1/26/2024 8 AM 9 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Saturday, January 27, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. Very Unhealthy Hazardous (355 to 424) (425-504) Columbus Square Park PeriodLocation 24-Hour Ending 1/27/2024 8 AM Particulate Matter 18 Level of Concern Good Fire Station 37 1/27/2024 8 AM 19 Good Hangar Fenceline - E Side 1/27/2024 8 AM 21 Good Hangar Fenceline - N Center 1/27/2024 8 AM 24 Good Hangar Fenceline - N Corner 1/27/2024 8 AM 22 Good Hangar Fenceline - NE Corner 1/27/2024 8 AM 22 Good Hangar Fenceline - NE Side 1/27/2024 8 AM 23 Good Hangar Fenceline - S Corner 1/27/2024 8 AM 24 Good Hangar Fenceline - S Side 1/27/2024 8 AM 26 Good Hangar Fenceline - SW Corner 1/27/2024 8 AM 23 Good Hangar Fenceline - SW Side 1/27/2024 8 AM 23 Good Hangar Fenceline - W Side 1/27/2024 8 AM 25 Good Heritage Elementary 1/27/2024 8 AM 21 Good Legacy Academy 1/27/2024 8 AM 26 Good Legacy Road 1/27/2024 8 AM 24 Good Moffett and Tustin Ranch 1/27/2024 8 AM 32 Good OC Animal Shelter 1/27/2024 8 AM 30 Good Valencia and Armstrong 1/27/2024 8 AM 19 Good Valencia and Columbus Square 1/27/2024 8 AM 20 Good Valencia and Legacy 1/27/2024 8 AM 25 Good Victory and Tustin Ranch Rd. 1/27/2024 8 AM 28 Good Warner and Armstrong 1/27/2024 8 AM 24 Good Warner Avenue 1/27/2024 8 AM 29 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health e veryone. Maroon Hazardous 425 to 504 Health warning of emergency conditions: • • -likely • •- -• Sunday, January 28, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction. Location Columbus Square Park 24-Hour Period Ending 1/28/2024 8 AM Matter 6 Level of • Good Fire Station 37 1/28/2024 8 AM 8 Good Hangar Fenceline - E Side 1/28/2024 8 AM 9 Good Hangar Fenceline - N Center 1/28/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/28/2024 8 AM 7 Good Hangar Fenceline - NE Corner 1/28/2024 8 AM 9 Good Hangar Fenceline - NE Side 1/28/2024 8 AM 9 Good Hangar Fenceline - S Corner 1/28/2024 8 AM 10 Good Hangar Fenceline - S Side 1/28/2024 8 AM 10 Good Hangar Fenceline - SW Corner 1/28/2024 8 AM 8 Good Hangar Fenceline - SW Side 1/28/2024 8 AM 14 Good Hangar Fenceline - W Side 1/28/2024 8 AM 8 Good Heritage Elementary 1/28/2024 8 AM 7 Good Legacy Academy 1/28/2024 8 AM 8 Good Legacy Road 1/28/2024 8 AM 8 Good Moffett and Tustin Ranch 1/28/2024 8 AM 12 Good OC Animal Shelter 1/28/2024 8 AM 9 Good Valencia and Armstrong 1/28/2024 8 AM 7 Good Valencia and Columbus Square ** ** ** Valencia and Legacy 1/28/2024 8 AM 8 Good Victory and Tustin Ranch Rd. 1/28/2024 8 AM 10 Good Warner and Armstrong 1/28/2024 8 AM 6 Good Warner Avenue 1/28/2024 8 AM 11 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Monday, January 29, 2024 North Hangar Fire Incident I City of Tustin Aik quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate Unhealthy for Unhealthy Very Unhealthy (0 to 54) (55 to 154) Sensitive Groups (255 to 354) (355 to 424) IL(155 to 254) See below for further category descriptions. ** Data gap due to instrument malfunction. Location Columbus Square Park 24-Hour Period Ending 1/29/2024 8 AM Matter 7 Level of • Good Fire Station 37 1/29/2024 8 AM 9 Good Hangar Fenceline - E Side 1/29/2024 8 AM 8 Good Hangar Fenceline - N Center 1/29/2024 8 AM 9 Good Hangar Fenceline - N Corner 1/29/2024 8 AM 7 Good Hangar Fenceline - NE Corner 1/29/2024 8 AM 8 Good Hangar Fenceline - NE Side 1/29/2024 8 AM 9 Good Hangar Fenceline - S Corner 1/29/2024 8 AM 31 Good Hangar Fenceline - S Side 1/29/2024 8 AM 11 Good Hangar Fenceline - SW Corner 1/29/2024 8 AM 7 Good Hangar Fenceline - SW Side 1/29/2024 8 AM 12 Good Hangar Fenceline - W Side 1/29/2024 8 AM 6 Good Heritage Elementary 1/29/2024 8 AM 8 Good Legacy Academy 1/29/2024 8 AM 9 Good Legacy Road 1/29/2024 8 AM 8 Good Moffett and Tustin Ranch 1/29/2024 8 AM 12 Good OC Animal Shelter ** ** ** Valencia and Armstrong 1/29/2024 8 AM 6 Good Valencia and Columbus Square 1/29/2024 8 AM 8 Good Valencia and Legacy 1/29/2024 8 AM 9 Good Victory and Tustin Ranch Rd. 1/29/2024 8 AM 10 Good Warner and Armstrong 1/29/2024 8 AM 5 Good Warner Avenue 1/29/2024 8 AM 15 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected. Tuesday, January 30, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. ** Data gap due to instrument malfunction. Very Unhealthy Hazardous (355 to 424) (425-504) Location Columbus Square Park Period Ending 1/30/2024 8 AM Matter 8 Level of Concern Good Fire Station 37 1/30/2024 8 AM 10 Good Hangar Fenceline - E Side 1/30/2024 8 AM 10 Good Hangar Fenceline - N Center 1/30/2024 8 AM 10 Good Hangar Fenceline - N Corner 1/30/2024 8 AM 10 Good Hangar Fenceline - NE Corner 1/30/2024 8 AM 10 Good Hangar Fenceline - NE Side 1/30/2024 8 AM 13 Good Hangar Fenceline - S Corner 1/30/2024 8 AM 16 Good Hangar Fenceline - S Side 1/30/2024 8 AM 15 Good Hangar Fenceline - SW Corner 1/30/2024 8 AM 10 Good Hangar Fenceline - SW Side 1/30/2024 8 AM 10 Good Hangar Fenceline - W Side 1/30/2024 8 AM 10 Good Heritage Elementary 1/30/2024 8 AM 10 Good Legacy Academy 1/30/2024 8 AM 11 Good Legacy Road 1/30/2024 8 AM 11 Good Moffett and Tustin Ranch 1/30/2024 8 AM 18 Good OC Animal Shelter 1/30/2024 8 AM 13 Good Valencia and Armstrong 1/30/2024 8 AM 8 Good Valencia and Columbus Square 1/30/2024 8 AM 8 Good Valencia and Legacy 1/30/2024 8 AM 12 Good Victory and Tustin Ranch Rd. 1/30/2024 8 AM 16 Good Warner and Armstrong 1/30/2024 8 AM 10 Good Warner Avenue 1/30/2024 8 AM 16 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health eryone. 425 to 04 Health warning. emergency more conditions: everyone is likely ..- affected. Wednesday, January 31, 2024 North Hangar Fire Incident I City of Tustin Air Quality Updates: Particulate Matter Air monitoring and sampling locations have been set up around the perimeter of the hangar and in surrounding communities to provide real-time information on Particulate Matter (PM) in the air. While the units are in place, an average reading for the last 24 hours will be provided for the public's reference. Any questions regarding these numbers should be directed to the call center at 714-426-2444. Monitoring Air Quality for Sensitive Individuals The Incident Management Team Environmental Group is monitoring the air quality around the incident for any readings above 154 micrograms per cubic meter (ug/m3), which may cause individuals in sensitive groups to experience health effects. This is a moderate threshold that is less likely to affect the general public. What is Particulate Matter? "Particulate matter," also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets that exists in the environment including pollen, dust, and soil. Typical particulate matter for the area ranges from 3 to 67 ug/m3. The concentration range is based on sampling results collected by South Coast AQMD in Anaheim, CA, which was the closest available dataset in proximity to the site. For more information about air quality and monitoring, visit the AirNow website at www.airnow.gov. Good Moderate (0 to 54) (55 to 154) Unhealthy for Wnhealthy Sensitive Groups (255 to Unhealthy EL(155 to 254)354) See below for further category descriptions. ** Data gap due to instrument malfunction. Very Unhealthy Hazardous (355 to 424) (425-504) Location Columbus Square Park Period Ending 1/31/2024 8 AM Matter 12 Level of Concern Good Fire Station 37 1/31/2024 8 AM 13 Good Hangar Fenceline - E Side 1/31/2024 8 AM 16 Good Hangar Fenceline - N Center 1/31/2024 8 AM 16 Good Hangar Fenceline - N Corner 1/31/2024 8 AM 15 Good Hangar Fenceline - NE Corner 1/31/2024 8 AM 15 Good Hangar Fenceline - NE Side 1/31/2024 8 AM 20 Good Hangar Fenceline - S Corner 1/31/2024 8 AM 19 Good Hangar Fenceline - S Side 1/31/2024 8 AM 21 Good Hangar Fenceline - SW Corner 1/31/2024 8 AM 17 Good Hangar Fenceline - SW Side 1/31/2024 8 AM 18 Good Hangar Fenceline - W Side 1/31/2024 8 AM 16 Good Heritage Elementary 1/31/2024 8 AM 14 Good Legacy Academy 1/31/2024 8 AM 18 Good Legacy Road 1/31/2024 8 AM 17 Good Moffett and Tustin Ranch 1/31/2024 8 AM 25 Good OC Animal Shelter 1/31/2024 8 AM 19 Good Valencia and Armstrong 1/31/2024 8 AM 14 Good Valencia and Columbus Square 1/31/2024 8 AM 12 Good Valencia and Legacy 1/31/2024 8 AM 17 Good Victory and Tustin Ranch Rd. 1/31/2024 8 AM 23 Good Warner and Armstrong 1/31/2024 8 AM 18 Good Warner Avenue 1/31/2024 8 AM 23 Good Category Descriptions Color Green Good 0 to 54 Air quality is satisfactory, and air pollution poses little or no risk. Yellow Moderate 55 to 154 Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. Orange Unhealthy for Sensitive 155 to 254 Members of sensitive groups may Groups experience health effects. The general public is less likely to be affected. Red Unhealthy 255 to 354 Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. Purple Very Unhealthy 355 to 424 Health alert: The risk of health effects is increased for everyone. 425 to 504 Health warning of - .- more conditions: everyone is likely • be affected.