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Home My WebLink AboutAir PM Results July 2024Monday, July, 01, 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 �nhealthy Sensitive Groups (255 to Unhealthy (155 to 254)354) * See below for further category descriptions. ** Data gap due to instrument malfunction. Very Unhealthy (355 to 424) Location Columbus Square Park 24-Hour Period Ending 07/01/2024 8 AM • 15 Good Hangar Fenceline - E Side 07/01/2024 8 AM 21 Good Hangar Fenceline - N Center 07/01/2024 8 AM 21 Good Hangar Fenceline - N Corner 07/01/2024 8 AM 20 Good Hangar Fenceline - NE Corner 07/01/2024 8 AM 19 Good Hangar Fenceline - NE Side 07/01/2024 8 AM 19 Good Hangar Fenceline - S Corner 07/01/2024 8 AM 20 Good Hangar Fenceline - S Side 07/01/2024 8 AM 21 Good Hangar Fenceline - SW Corner 07/01/2024 8 AM 19 Good Hangar Fenceline - SW Side 07/01/2024 8 AM 19 Good • •24-Hour Hangar Fenceline - W Side Period Ending 07/01/2024 8 AM Particulate Matter 20 Level of Concern Good Legacy Road 07/01/2024 8 AM 24 Good Moffett and Tustin Ranch 07/01/2024 8 AM 24 Good Valencia and Armstrong 07/01/2024 8 AM 19 Good Valencia and Columbus Square 07/01/2024 8 AM 18 Good Valencia and Legacy 07/01/2024 8 AM 21 Good Victory and Tustin Ranch Rd. 07/01/2024 8 AM 19 Good Warner and Armstrong 07/01/2024 8 AM 22 Good Warner Avenue 07/01/2024 8 AM 21 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. Hazardous04 Health warning of emergencyconditions: more ever• - is likely • be affected. Tuesday, July, 02, 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) Unhealthyfor 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 07/02/2024 8 AM Matter 11 Level of Concern Good Hangar Fenceline - E Side 07/02/2024 8 AM 15 Good Hangar Fenceline - N Center 07/02/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/02/2024 8 AM 15 Good Hangar Fenceline - NE Corner 07/02/2024 8 AM 16 Good Hangar Fenceline - NE Side 07/02/2024 8 AM 15 Good Hangar Fenceline - S Corner 07/02/2024 8 AM 15 Good Hangar Fenceline - S Side 07/02/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/02/2024 8 AM 17 Good Hangar Fenceline - SW Side 07/02/2024 8 AM 16 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/02/2024 8 AM Particulate Matter • 15 Level of Concern Good Legacy Road 07/02/2024 8 AM 13 Good Moffett and Tustin Ranch 07/02/2024 8 AM 19 Good Valencia and Armstrong 07/02/2024 8 AM 16 Good Valencia and Columbus Square 07/02/2024 8 AM 14 Good Valencia and Legacy 07/02/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 07/02/2024 8 AM 15 Good Warner and Armstrong 07/02/2024 8 AM 20 Good Warner Avenue 07/02/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Wednesday, July, 03, 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) Unhealthyfor 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 07/03/2024 8 AM Matter 15 Level of Concern Good Hangar Fenceline - E Side 07/03/2024 8 AM 20 Good Hangar Fenceline - N Center 07/03/2024 8 AM 24 Good Hangar Fenceline - N Corner 07/03/2024 8 AM 21 Good Hangar Fenceline - NE Corner 07/03/2024 8 AM 20 Good Hangar Fenceline - NE Side 07/03/2024 8 AM 20 Good Hangar Fenceline - S Corner 07/03/2024 8 AM 20 Good Hangar Fenceline - S Side 07/03/2024 8 AM 23 Good Hangar Fenceline - SW Corner 07/03/2024 8 AM 23 Good Hangar Fenceline - SW Side 07/03/2024 8 AM 20 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/03/2024 8 AM Particulate Matter • 20 Level of Concern Good Legacy Road 07/03/2024 8 AM 18 Good Moffett and Tustin Ranch 07/03/2024 8 AM 27 Good Valencia and Armstrong 07/03/2024 8 AM 21 Good Valencia and Columbus Square 07/03/2024 8 AM 17 Good Valencia and Legacy 07/03/2024 8 AM 18 Good Victory and Tustin Ranch Rd. 07/03/2024 8 AM 19 Good Warner and Armstrong 07/03/2024 8 AM 23 Good Warner Avenue 07/03/2024 8 AM 21 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Thursday, July, 04, 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) Unhealthyfor 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 07/04/2024 8 AM Matter 17 Level of Concern Good Hangar Fenceline - E Side 07/04/2024 8 AM 22 Good Hangar Fenceline - N Center 07/04/2024 8 AM 21 Good Hangar Fenceline - N Corner 07/04/2024 8 AM 21 Good Hangar Fenceline - NE Corner 07/04/2024 8 AM 20 Good Hangar Fenceline - NE Side 07/04/2024 8 AM 21 Good Hangar Fenceline - S Corner 07/04/2024 8 AM 21 Good Hangar Fenceline - S Side 07/04/2024 8 AM 24 Good Hangar Fenceline - SW Corner 07/04/2024 8 AM 22 Good Hangar Fenceline - SW Side 07/04/2024 8 AM 22 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/04/2024 8 AM Particulate Matter • 21 Level of Concern Good Legacy Road 07/04/2024 8 AM 19 Good Moffett and Tustin Ranch 07/04/2024 8 AM 25 Good Valencia and Armstrong 07/04/2024 8 AM 21 Good Valencia and Columbus Square 07/04/2024 8 AM 19 Good Valencia and Legacy 07/04/2024 8 AM 20 Good Victory and Tustin Ranch Rd. 07/04/2024 8 AM 20 Good Warner and Armstrong 07/04/2024 8 AM 22 Good Warner Avenue 07/04/2024 8 AM 21 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Friday, July, 05, 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) Unhealthyfor 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 07/05/2024 8 AM Matter 17 Level of Concern Good Hangar Fenceline - E Side 07/05/2024 8 AM 21 Good Hangar Fenceline - N Center 07/05/2024 8 AM 24 Good Hangar Fenceline - N Corner 07/05/2024 8 AM 22 Good Hangar Fenceline - NE Corner 07/05/2024 8 AM 21 Good Hangar Fenceline - NE Side 07/05/2024 8 AM 21 Good Hangar Fenceline - S Corner 07/05/2024 8 AM 21 Good Hangar Fenceline - S Side 07/05/2024 8 AM 25 Good Hangar Fenceline - SW Corner 07/05/2024 8 AM 23 Good Hangar Fenceline - SW Side 07/05/2024 8 AM 21 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/05/2024 8 AM Particulate Matter • 21 Level of Concern Good Legacy Road 07/05/2024 8 AM 19 Good Moffett and Tustin Ranch 07/05/2024 8 AM 30 Good Valencia and Armstrong 07/05/2024 8 AM 22 Good Valencia and Columbus Square 07/05/2024 8 AM 19 Good Valencia and Legacy 07/05/2024 8 AM 20 Good Victory and Tustin Ranch Rd. 07/05/2024 8 AM 24 Good Warner and Armstrong 07/05/2024 8 AM 30 Good Warner Avenue 07/05/2024 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 effects is increased for everyone. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Saturday, July, 06, 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) Unhealthyfor 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 07/06/2024 8 AM Matter 21 Level of Concern Good Hangar Fenceline - E Side 07/06/2024 8 AM 26 Good Hangar Fenceline - N Center 07/06/2024 8 AM 28 Good Hangar Fenceline - N Corner 07/06/2024 8 AM 26 Good Hangar Fenceline - NE Corner 07/06/2024 8 AM 27 Good Hangar Fenceline - NE Side 07/06/2024 8 AM 27 Good Hangar Fenceline - S Corner 07/06/2024 8 AM 2S Good Hangar Fenceline - S Side 07/06/2024 8 AM 29 Good Hangar Fenceline - SW Corner 07/06/2024 8 AM 26 Good Hangar Fenceline - SW Side 07/06/2024 8 AM 27 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/06/2024 8 AM Particulate Matter • 26 Level of Concern Good Legacy Road 07/06/2024 8 AM 22 Good Moffett and Tustin Ranch 07/06/2024 8 AM 30 Good Valencia and Armstrong 07/06/2024 8 AM 26 Good Valencia and Columbus Square 07/06/2024 8 AM 23 Good Valencia and Legacy 07/06/2024 8 AM 22 Good Victory and Tustin Ranch Rd. 07/06/2024 8 AM 25 Good Warner and Armstrong 07/06/2024 8 AM 30 Good Warner Avenue 07/06/2024 8 AM 27 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Sunday, July, 07, 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) Unhealthyfor 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 07/07/2024 8 AM Matter 15 Level of Concern Good Hangar Fenceline - E Side 07/07/2024 8 AM 18 Good Hangar Fenceline - N Center 07/07/2024 8 AM 22 Good Hangar Fenceline - N Corner 07/07/2024 8 AM 19 Good Hangar Fenceline - NE Corner 07/07/2024 8 AM 19 Good Hangar Fenceline - NE Side 07/07/2024 8 AM 19 Good Hangar Fenceline - S Corner 07/07/2024 8 AM 19 Good Hangar Fenceline - S Side 07/07/2024 8 AM 22 Good Hangar Fenceline - SW Corner 07/07/2024 8 AM 20 Good Hangar Fenceline - SW Side 07/07/2024 8 AM 19 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/07/2024 8 AM Particulate Matter • 19 Level of Concern Good Legacy Road 07/07/2024 8 AM 18 Good Moffett and Tustin Ranch 07/07/2024 8 AM 23 Good Valencia and Armstrong 07/07/2024 8 AM 19 Good Valencia and Columbus Square 07/07/2024 8 AM 17 Good Valencia and Legacy 07/07/2024 8 AM 17 Good Victory and Tustin Ranch Rd. 07/07/2024 8 AM 19 Good Warner and Armstrong 07/07/2024 8 AM 24 Good Warner Avenue 07/07/2024 8 AM 20 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Monday, July, 08, 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) Unhealthyfor 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 07/08/2024 8 AM Matter 13 Level of Concern Good Hangar Fenceline - E Side 07/08/2024 8 AM 17 Good Hangar Fenceline - N Center 07/08/2024 8 AM 18 Good Hangar Fenceline - N Corner 07/08/2024 8 AM 17 Good Hangar Fenceline - NE Corner 07/08/2024 8 AM 17 Good Hangar Fenceline - NE Side 07/08/2024 8 AM 18 Good Hangar Fenceline - S Corner 07/08/2024 8 AM 17 Good Hangar Fenceline - S Side 07/08/2024 8 AM 19 Good Hangar Fenceline - SW Corner 07/08/2024 8 AM 18 Good Hangar Fenceline - SW Side 07/08/2024 8 AM 17 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/08/2024 8 AM Particulate Matter • 17 Level of Concern Good Legacy Road 07/08/2024 8 AM 16 Good Moffett and Tustin Ranch 07/08/2024 8 AM 22 Good Valencia and Armstrong 07/08/2024 8 AM 17 Good Valencia and Columbus Square 07/08/2024 8 AM 15 Good Valencia and Legacy 07/08/2024 8 AM 16 Good Victory and Tustin Ranch Rd. 07/08/2024 8 AM 17 Good Warner and Armstrong 07/08/2024 8 AM 19 Good Warner Avenue 07/08/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Tuesday, July, 09, 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) Unhealthyfor 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 07/09/2024 8 AM Matter 16 Level of Concern Good Hangar Fenceline - E Side 07/09/2024 8 AM 22 Good Hangar Fenceline - N Center 07/09/2024 8 AM 21 Good Hangar Fenceline - N Corner 07/09/2024 8 AM 21 Good Hangar Fenceline - NE Corner 07/09/2024 8 AM 20 Good Hangar Fenceline - NE Side 07/09/2024 8 AM 22 Good Hangar Fenceline - S Corner 07/09/2024 8 AM 21 Good Hangar Fenceline - S Side 07/09/2024 8 AM 22 Good Hangar Fenceline - SW Corner 07/09/2024 8 AM 21 Good Hangar Fenceline - SW Side 07/09/2024 8 AM 21 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/09/2024 8 AM Particulate Matter • 21 Level of Concern Good Legacy Road 07/09/2024 8 AM 20 Good Moffett and Tustin Ranch 07/09/2024 8 AM 29 Good Valencia and Armstrong 07/09/2024 8 AM 22 Good Valencia and Columbus Square 07/09/2024 8 AM 18 Good Valencia and Legacy 07/09/2024 8 AM 21 Good Victory and Tustin Ranch Rd. 07/09/2024 8 AM 21 Good Warner and Armstrong 07/09/2024 8 AM 23 Good Warner Avenue 07/09/2024 8 AM 21 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Wednesday, July, 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 (0 to 54) (55 to 154) Unhealthyfor 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 07/10/2024 8 AM Matter 23 Level of Concern Good Hangar Fenceline - E Side 07/10/2024 8 AM 29 Good Hangar Fenceline - N Center 07/10/2024 8 AM 31 Good Hangar Fenceline - N Corner 07/10/2024 8 AM 29 Good Hangar Fenceline - NE Corner 07/10/2024 8 AM 29 Good Hangar Fenceline - NE Side 07/10/2024 8 AM 31 Good Hangar Fenceline - S Corner 07/10/2024 8 AM 29 Good Hangar Fenceline - S Side 07/10/2024 8 AM 31 Good Hangar Fenceline - SW Corner 07/10/2024 8 AM 28 Good Hangar Fenceline - SW Side 07/10/2024 8 AM 29 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/10/2024 8 AM Particulate Matter • 29 Level of Concern Good Legacy Road 07/10/2024 8 AM 29 Good Moffett and Tustin Ranch 07/10/2024 8 AM 35 Good Valencia and Armstrong 07/10/2024 8 AM 30 Good Valencia and Columbus Square 07/10/2024 8 AM 26 Good Valencia and Legacy 07/10/2024 8 AM 29 Good Victory and Tustin Ranch Rd. 07/10/2024 8 AM 28 Good Warner and Armstrong 07/10/2024 8 AM 32 Good Warner Avenue 07/10/2024 8 AM 27 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Thursday, July, 11, 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) Unhealthyfor 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 07/11/2024 8 AM Matter 23 Level of Concern Good Hangar Fenceline - E Side 07/11/2024 8 AM 28 Good Hangar Fenceline - N Center 07/11/2024 8 AM 30 Good Hangar Fenceline - N Corner 07/11/2024 8 AM 29 Good Hangar Fenceline - NE Corner 07/11/2024 8 AM 29 Good Hangar Fenceline - NE Side 07/11/2024 8 AM 30 Good Hangar Fenceline - S Corner 07/11/2024 8 AM 29 Good Hangar Fenceline - S Side 07/11/2024 8 AM 32 Good Hangar Fenceline - SW Corner 07/11/2024 8 AM 29 Good Hangar Fenceline - SW Side 07/11/2024 8 AM 29 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/11/2024 8 AM Particulate Matter • 29 Level of Concern Good Legacy Road 07/11/2024 8 AM 29 Good Moffett and Tustin Ranch 07/11/2024 8 AM 34 Good Valencia and Armstrong 07/11/2024 8 AM 29 Good Valencia and Columbus Square 07/11/2024 8 AM 26 Good Valencia and Legacy 07/11/2024 8 AM 30 Good Victory and Tustin Ranch Rd. 07/11/2024 8 AM 27 Good Warner and Armstrong 07/11/2024 8 AM 32 Good Warner Avenue 07/11/2024 8 AM 28 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Friday, July, 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 (0 to 54) (55 to 154) Unhealthyfor 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 07/12/2024 8 AM Matter 18 Level of Concern Good Hangar Fenceline - E Side 07/12/2024 8 AM 20 Good Hangar Fenceline - N Center 07/12/2024 8 AM 23 Good Hangar Fenceline - N Corner 07/12/2024 8 AM 21 Good Hangar Fenceline - NE Corner 07/12/2024 8 AM 21 Good Hangar Fenceline - NE Side 07/12/2024 8 AM 20 Good Hangar Fenceline - S Corner 07/12/2024 8 AM 21 Good Hangar Fenceline - S Side 07/12/2024 8 AM 23 Good Hangar Fenceline - SW Corner 07/12/2024 8 AM 21 Good Hangar Fenceline - SW Side 07/12/2024 8 AM 20 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/12/2024 8 AM Particulate Matter • 20 Level of Concern Good Legacy Road 07/12/2024 8 AM 21 Good Moffett and Tustin Ranch 07/12/2024 8 AM 24 Good Valencia and Armstrong 07/12/2024 8 AM 21 Good Valencia and Columbus Square 07/12/2024 8 AM 18 Good Valencia and Legacy 07/12/2024 8 AM 21 Good Victory and Tustin Ranch Rd. 07/12/2024 8 AM 20 Good Warner and Armstrong 07/12/2024 8 AM 24 Good Warner Avenue 07/12/2024 8 AM 20 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Saturday, July, 13, 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) Unhealthyfor 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 07/13/2024 8 AM Matter 17 Level of Concern Good Hangar Fenceline - E Side 07/13/2024 8 AM 19 Good Hangar Fenceline - N Center 07/13/2024 8 AM 21 Good Hangar Fenceline - N Corner 07/13/2024 8 AM 24 Good Hangar Fenceline - NE Corner 07/13/2024 8 AM 20 Good Hangar Fenceline - NE Side 07/13/2024 8 AM 21 Good Hangar Fenceline - S Corner 07/13/2024 8 AM 20 Good Hangar Fenceline - S Side 07/13/2024 8 AM 22 Good Hangar Fenceline - SW Corner 07/13/2024 8 AM 20 Good Hangar Fenceline - SW Side 07/13/2024 8 AM 19 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/13/2024 8 AM Particulate Matter • 24 Level of Concern Good Legacy Road 07/13/2024 8 AM 19 Good Moffett and Tustin Ranch 07/13/2024 8 AM 22 Good Valencia and Armstrong 07/13/2024 8 AM 20 Good Valencia and Columbus Square 07/13/2024 8 AM 17 Good Valencia and Legacy 07/13/2024 8 AM 20 Good Victory and Tustin Ranch Rd. 07/13/2024 8 AM 19 Good Warner and Armstrong 07/13/2024 8 AM 21 Good Warner Avenue 07/13/2024 8 AM 20 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Sunday, July, 14, 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) Unhealthyfor 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 07/14/2024 8 AM Matter 12 Level of Concern Good Hangar Fenceline - E Side 07/14/2024 8 AM 14 Good Hangar Fenceline - N Center 07/14/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/14/2024 8 AM 14 Good Hangar Fenceline - NE Corner 07/14/2024 8 AM 15 Good Hangar Fenceline - NE Side 07/14/2024 8 AM 14 Good Hangar Fenceline - S Corner 07/14/2024 8 AM 15 Good Hangar Fenceline - S Side 07/14/2024 8 AM 17 Good Hangar Fenceline - SW Corner 07/14/2024 8 AM 16 Good Hangar Fenceline - SW Side 07/14/2024 8 AM 15 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/14/2024 8 AM Particulate Matter • 14 Level of Concern Good Legacy Road 07/14/2024 8 AM 15 Good Moffett and Tustin Ranch 07/14/2024 8 AM 19 Good Valencia and Armstrong 07/14/2024 8 AM 15 Good Valencia and Columbus Square 07/14/2024 8 AM 13 Good Valencia and Legacy 07/14/2024 8 AM 15 Good Victory and Tustin Ranch Rd. 07/14/2024 8 AM 19 Good Warner and Armstrong 07/14/2024 8 AM 18 Good Warner Avenue 07/14/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Monday, July, 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 (0 to 54) (55 to 154) Unhealthyfor 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 07/15/2024 8 AM Matter 13 Level of Concern Good Hangar Fenceline - E Side 07/15/2024 8 AM 14 Good Hangar Fenceline - N Center 07/15/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/15/2024 8 AM 15 Good Hangar Fenceline - NE Corner 07/15/2024 8 AM 15 Good Hangar Fenceline - NE Side 07/15/2024 8 AM 14 Good Hangar Fenceline - S Corner 07/15/2024 8 AM 16 Good Hangar Fenceline - S Side 07/15/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/15/2024 8 AM 17 Good Hangar Fenceline - SW Side 07/15/2024 8 AM 17 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/15/2024 8 AM Particulate Matter • 15 Level of Concern Good Legacy Road 07/15/2024 8 AM 15 Good Moffett and Tustin Ranch 07/15/2024 8 AM 21 Good Valencia and Armstrong 07/15/2024 8 AM 15 Good Valencia and Columbus Square 07/15/2024 8 AM 14 Good Valencia and Legacy 07/15/2024 8 AM 16 Good Victory and Tustin Ranch Rd. 07/15/2024 8 AM 10 Good Warner and Armstrong 07/15/2024 8 AM 19 Good Warner Avenue 07/15/2024 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 effects is increased for everyone. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Tuesday, July, 16, 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) Unhealthyfor 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 07/16/2024 8 AM Matter 12 Level of Concern Good Hangar Fenceline - E Side 07/16/2024 8 AM 12 Good Hangar Fenceline - N Center 07/16/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/16/2024 8 AM 14 Good Hangar Fenceline - NE Corner 07/16/2024 8 AM 14 Good Hangar Fenceline - NE Side 07/16/2024 8 AM 13 Good Hangar Fenceline - S Corner 07/16/2024 8 AM 14 Good Hangar Fenceline - S Side 07/16/2024 8 AM 16 Good Hangar Fenceline - SW Corner 07/16/2024 8 AM 16 Good Hangar Fenceline - SW Side 07/16/2024 8 AM 14 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/16/2024 8 AM Particulate Matter • 14 Level of Concern Good Legacy Road 07/16/2024 8 AM 14 Good Moffett and Tustin Ranch 07/16/2024 8 AM 21 Good Valencia and Armstrong 07/16/2024 8 AM 14 Good Valencia and Columbus Square 07/16/2024 8 AM 13 Good Valencia and Legacy 07/16/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 07/16/2024 8 AM 11 Good Warner and Armstrong 07/16/2024 8 AM 18 Good Warner Avenue 07/16/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Wednesday, July, 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) Unhealthyfor 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 07/17/2024 8 AM Matter 10 Level of Concern Good Hangar Fenceline - E Side 07/17/2024 8 AM 8 Good Hangar Fenceline - N Center 07/17/2024 8 AM 16 Good Hangar Fenceline - N Corner 07/17/2024 8 AM 11 Good Hangar Fenceline - NE Corner 07/17/2024 8 AM 11 Good Hangar Fenceline - NE Side 07/17/2024 8 AM 16 Good Hangar Fenceline - S Corner 07/17/2024 8 AM 11 Good Hangar Fenceline - S Side 07/17/2024 8 AM 13 Good Hangar Fenceline - SW Corner 07/17/2024 8 AM 11 Good Hangar Fenceline - SW Side 07/17/2024 8 AM 11 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/17/2024 8 AM Particulate Matter • 11 Level of Concern Good Legacy Road 07/17/2024 8 AM 11 Good Moffett and Tustin Ranch 07/17/2024 8 AM 17 Good Valencia and Armstrong 07/17/2024 8 AM 11 Good Valencia and Columbus Square 07/17/2024 8 AM 10 Good Valencia and Legacy 07/17/2024 8 AM 12 Good Victory and Tustin Ranch Rd. 07/17/2024 8 AM 10 Good Warner and Armstrong 07/17/2024 8 AM 14 Good Warner Avenue 07/17/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Thursday, July, 18, 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) Unhealthyfor 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 07/18/2024 8 AM Matter 9 Level of Concern Good Hangar Fenceline - E Side 07/18/2024 8 AM 7 Good Hangar Fenceline - N Center 07/18/2024 8 AM 13 Good Hangar Fenceline - N Corner 07/18/2024 8 AM 11 Good Hangar Fenceline - NE Corner 07/18/2024 8 AM 11 Good Hangar Fenceline - NE Side 07/18/2024 8 AM 11 Good Hangar Fenceline - S Corner 07/18/2024 8 AM 12 Good Hangar Fenceline - S Side 07/18/2024 8 AM 13 Good Hangar Fenceline - SW Corner 07/18/2024 8 AM 13 Good Hangar Fenceline - SW Side 07/18/2024 8 AM 12 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/18/2024 8 AM Particulate Matter • 11 Level of Concern Good Legacy Road 07/18/2024 8 AM 10 Good Moffett and Tustin Ranch 07/18/2024 8 AM 20 Good Valencia and Armstrong 07/18/2024 8 AM 10 Good Valencia and Columbus Square 07/18/2024 8 AM 9 Good Valencia and Legacy 07/18/2024 8 AM 10 Good Victory and Tustin Ranch Rd. 07/18/2024 8 AM 10 Good Warner and Armstrong 07/18/2024 8 AM 11 Good Warner Avenue 07/18/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Friday, July, 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) Unhealthyfor 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 07/19/2024 8 AM Matter 11 Level of Concern Good Hangar Fenceline - E Side 07/19/2024 8 AM 11 Good Hangar Fenceline - N Center 07/19/2024 8 AM 15 Good Hangar Fenceline - N Corner 07/19/2024 8 AM 14 Good Hangar Fenceline - NE Corner 07/19/2024 8 AM 14 Good Hangar Fenceline - NE Side 07/19/2024 8 AM 15 Good Hangar Fenceline - S Corner 07/19/2024 8 AM 14 Good Hangar Fenceline - S Side 07/19/2024 8 AM 15 Good Hangar Fenceline - SW Corner 07/19/2024 8 AM 15 Good Hangar Fenceline - SW Side 07/19/2024 8 AM 14 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/19/2024 8 AM Particulate Matter • 14 Level of Concern Good Legacy Road 07/19/2024 8 AM 19 Good Moffett and Tustin Ranch 07/19/2024 8 AM 20 Good Valencia and Armstrong 07/19/2024 8 AM 13 Good Valencia and Columbus Square 07/19/2024 8 AM 13 Good Valencia and Legacy 07/19/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 07/19/2024 8 AM 12 Good Warner and Armstrong 07/19/2024 8 AM ** ** Warner Avenue 07/19/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Saturday, July, 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 (0 to 54) (55 to 154) Unhealthyfor 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 07/20/2024 8 AM Matter 19 Level of Concern Good Hangar Fenceline - E Side 07/20/2024 8 AM 17 Good Hangar Fenceline - N Center 07/20/2024 8 AM 2S Good Hangar Fenceline - N Corner 07/20/2024 8 AM 23 Good Hangar Fenceline - NE Corner 07/20/2024 8 AM 23 Good Hangar Fenceline - NE Side 07/20/2024 8 AM 24 Good Hangar Fenceline - S Corner 07/20/2024 8 AM 23 Good Hangar Fenceline - S Side 07/20/2024 8 AM 24 Good Hangar Fenceline - SW Corner 07/20/2024 8 AM 23 Good Hangar Fenceline - SW Side 07/20/2024 8 AM 22 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/20/2024 8 AM Particulate Matter • 23 Level of Concern Good Legacy Road 07/20/2024 8 AM 22 Good Moffett and Tustin Ranch 07/20/2024 8 AM 29 Good Valencia and Armstrong 07/20/2024 8 AM 22 Good Valencia and Columbus Square 07/20/2024 8 AM 20 Good Valencia and Legacy 07/20/2024 8 AM 22 Good Victory and Tustin Ranch Rd. 07/20/2024 8 AM 22 Good Warner and Armstrong 07/20/2024 8 AM 23 Good Warner Avenue 07/20/2024 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 effects is increased for everyone. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Sunday, July, 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) Unhealthyfor 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 07/21/2024 8 AM Matter 15 Level of Concern Good Hangar Fenceline - E Side 07/21/2024 8 AM 13 Good Hangar Fenceline - N Center 07/21/2024 8 AM 19 Good Hangar Fenceline - N Corner 07/21/2024 8 AM 19 Good Hangar Fenceline - NE Corner 07/21/2024 8 AM 18 Good Hangar Fenceline - NE Side 07/21/2024 8 AM 20 Good Hangar Fenceline - S Corner 07/21/2024 8 AM 19 Good Hangar Fenceline - S Side 07/21/2024 8 AM 21 Good Hangar Fenceline - SW Corner 07/21/2024 8 AM 21 Good Hangar Fenceline - SW Side 07/21/2024 8 AM 19 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/21/2024 8 AM Particulate Matter • 19 Level of Concern Good Legacy Road 07/21/2024 8 AM 21 Good Moffett and Tustin Ranch 07/21/2024 8 AM 27 Good Valencia and Armstrong 07/21/2024 8 AM 17 Good Valencia and Columbus Square 07/21/2024 8 AM 16 Good Valencia and Legacy 07/21/2024 8 AM 19 Good Victory and Tustin Ranch Rd. 07/21/2024 8 AM 18 Good Warner and Armstrong 07/21/2024 8 AM 27 Good Warner Avenue 07/21/2024 8 AM 20 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Monday, July, 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) Unhealthyfor 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 07/22/2024 8 AM Matter 14 Level of Concern Good Hangar Fenceline - E Side 07/22/2024 8 AM 10 Good Hangar Fenceline - N Center 07/22/2024 8 AM 16 Good Hangar Fenceline - N Corner 07/22/2024 8 AM 17 Good Hangar Fenceline - NE Corner 07/22/2024 8 AM 15 Good Hangar Fenceline - NE Side 07/22/2024 8 AM 19 Good Hangar Fenceline - S Corner 07/22/2024 8 AM 17 Good Hangar Fenceline - S Side 07/22/2024 8 AM 19 Good Hangar Fenceline - SW Corner 07/22/2024 8 AM 18 Good Hangar Fenceline - SW Side 07/22/2024 8 AM 17 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/22/2024 8 AM Particulate Matter • 18 Level of Concern Good Legacy Road 07/22/2024 8 AM 19 Good Moffett and Tustin Ranch 07/22/2024 8 AM 28 Good Valencia and Armstrong 07/22/2024 8 AM 15 Good Valencia and Columbus Square 07/22/2024 8 AM 14 Good Valencia and Legacy 07/22/2024 8 AM 15 Good Victory and Tustin Ranch Rd. 07/22/2024 8 AM 16 Good Warner and Armstrong 07/22/2024 8 AM 12 Good Warner Avenue 07/22/2024 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 effects is increased for everyone. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Tuesday, July, 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) Unhealthyfor 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 07/23/2024 8 AM Matter 12 Level of Concern Good Hangar Fenceline - E Side 07/23/2024 8 AM 9 Good Hangar Fenceline - N Center 07/23/2024 8 AM 14 Good Hangar Fenceline - N Corner 07/23/2024 8 AM 14 Good Hangar Fenceline - NE Corner 07/23/2024 8 AM 13 Good Hangar Fenceline - NE Side 07/23/2024 8 AM 17 Good Hangar Fenceline - S Corner 07/23/2024 8 AM 15 Good Hangar Fenceline - S Side 07/23/2024 8 AM 15 Good Hangar Fenceline - SW Corner 07/23/2024 8 AM 16 Good Hangar Fenceline - SW Side 07/23/2024 8 AM 15 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/23/2024 8 AM Particulate Matter • 16 Level of Concern Good Legacy Road 07/23/2024 8 AM 15 Good Moffett and Tustin Ranch 07/23/2024 8 AM 22 Good Valencia and Armstrong 07/23/2024 8 AM 14 Good Valencia and Columbus Square 07/23/2024 8 AM 13 Good Valencia and Legacy 07/23/2024 8 AM 13 Good Victory and Tustin Ranch Rd. 07/23/2024 8 AM 13 Good Warner and Armstrong 07/23/2024 8 AM 13 Good Warner Avenue 07/23/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Wednesday, July, 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) Unhealthyfor 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 07/24/2024 8 AM Matter 11 Level of Concern Good Hangar Fenceline - E Side 07/24/2024 8 AM 15 Good Hangar Fenceline - N Center 07/24/2024 8 AM 11 Good Hangar Fenceline - N Corner 07/24/2024 8 AM 12 Good Hangar Fenceline - NE Corner 07/24/2024 8 AM 14 Good Hangar Fenceline - NE Side 07/24/2024 8 AM 15 Good Hangar Fenceline - S Corner 07/24/2024 8 AM 13 Good Hangar Fenceline - S Side 07/24/2024 8 AM 14 Good Hangar Fenceline - SW Corner 07/24/2024 8 AM 13 Good Hangar Fenceline - SW Side 07/24/2024 8 AM 13 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/24/2024 8 AM Particulate Matter • 13 Level of Concern Good Legacy Road 07/24/2024 8 AM 12 Good Moffett and Tustin Ranch 07/24/2024 8 AM 19 Good Valencia and Armstrong 07/24/2024 8 AM 12 Good Valencia and Columbus Square 07/24/2024 8 AM 11 Good Valencia and Legacy 07/24/2024 8 AM 13 Good Victory and Tustin Ranch Rd. 07/24/2024 8 AM 12 Good Warner and Armstrong 07/24/2024 8 AM 18 Good Warner Avenue 07/24/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Thursday, July, 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) Unhealthyfor 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 07/25/2024 8 AM Matter 15 Level of Concern Good Hangar Fenceline - E Side 07/25/2024 8 AM 10 Good Hangar Fenceline - N Center 07/25/2024 8 AM 19 Good Hangar Fenceline - N Corner 07/25/2024 8 AM 19 Good Hangar Fenceline - NE Corner 07/25/2024 8 AM 20 Good Hangar Fenceline - NE Side 07/25/2024 8 AM 23 Good Hangar Fenceline - S Corner 07/25/2024 8 AM 19 Good Hangar Fenceline - S Side 07/25/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/25/2024 8 AM 21 Good Hangar Fenceline - SW Side 07/25/2024 8 AM 20 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/25/2024 8 AM Particulate Matter • 18 Level of Concern Good Legacy Road 07/25/2024 8 AM 18 Good Moffett and Tustin Ranch 07/25/2024 8 AM 29 Good Valencia and Armstrong 07/25/2024 8 AM 16 Good Valencia and Columbus Square 07/25/2024 8 AM 15 Good Valencia and Legacy 07/25/2024 8 AM 17 Good Victory and Tustin Ranch Rd. 07/25/2024 8 AM 18 Good Warner and Armstrong 07/25/2024 8 AM 24 Good Warner Avenue 07/25/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Friday, July, 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) Unhealthyfor 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 07/26/2024 8 AM Matter 14 Level of Concern Good Hangar Fenceline - E Side 07/26/2024 8 AM 10 Good Hangar Fenceline - N Center 07/26/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/26/2024 8 AM 18 Good Hangar Fenceline - NE Corner 07/26/2024 8 AM 17 Good Hangar Fenceline - NE Side 07/26/2024 8 AM 20 Good Hangar Fenceline - S Corner 07/26/2024 8 AM 17 Good Hangar Fenceline - S Side 07/26/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/26/2024 8 AM 20 Good Hangar Fenceline - SW Side 07/26/2024 8 AM 18 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/26/2024 8 AM Particulate Matter • 18 Level of Concern Good Legacy Road 07/26/2024 8 AM 18 Good Moffett and Tustin Ranch 07/26/2024 8 AM 26 Good Valencia and Armstrong 07/26/2024 8 AM 15 Good Valencia and Columbus Square 07/26/2024 8 AM 15 Good Valencia and Legacy 07/26/2024 8 AM 16 Good Victory and Tustin Ranch Rd. 07/26/2024 8 AM 8 Good Warner and Armstrong 07/26/2024 8 AM 20 Good Warner Avenue 07/26/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Saturday, July, 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) Unhealthyfor 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 07/27/2024 8 AM Matter 15 Level of Concern Good Hangar Fenceline - E Side 07/27/2024 8 AM 13 Good Hangar Fenceline - N Center 07/27/2024 8 AM 16 Good Hangar Fenceline - N Corner 07/27/2024 8 AM 18 Good Hangar Fenceline - NE Corner 07/27/2024 8 AM 19 Good Hangar Fenceline - NE Side 07/27/2024 8 AM 20 Good Hangar Fenceline - S Corner 07/27/2024 8 AM 17 Good Hangar Fenceline - S Side 07/27/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/27/2024 8 AM 20 Good Hangar Fenceline - SW Side 07/27/2024 8 AM 18 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/27/2024 8 AM Particulate Matter • 19 Level of Concern Good Legacy Road 07/27/2024 8 AM 20 Good Moffett and Tustin Ranch 07/27/2024 8 AM 26 Good Valencia and Armstrong 07/27/2024 8 AM 17 Good Valencia and Columbus Square 07/27/2024 8 AM 16 Good Valencia and Legacy 07/27/2024 8 AM 18 Good Victory and Tustin Ranch Rd. 07/27/2024 8 AM 17 Good Warner and Armstrong 07/27/2024 8 AM 17 Good Warner Avenue 07/27/2024 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 effects is increased for everyone. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Sunday, July, 28, 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) Unhealthyfor 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 07/28/2024 8 AM Matter 16 Level of Concern Good Hangar Fenceline - E Side 07/28/2024 8 AM 11 Good Hangar Fenceline - N Center 07/28/2024 8 AM 21 Good Hangar Fenceline - N Corner 07/28/2024 8 AM 20 Good Hangar Fenceline - NE Corner 07/28/2024 8 AM 21 Good Hangar Fenceline - NE Side 07/28/2024 8 AM 21 Good Hangar Fenceline - S Corner 07/28/2024 8 AM 20 Good Hangar Fenceline - S Side 07/28/2024 8 AM 21 Good Hangar Fenceline - SW Corner 07/28/2024 8 AM 22 Good Hangar Fenceline - SW Side 07/28/2024 8 AM 22 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/28/2024 8 AM Particulate Matter • 20 Level of Concern Good Legacy Road 07/28/2024 8 AM 19 Good Moffett and Tustin Ranch 07/28/2024 8 AM 29 Good Valencia and Armstrong 07/28/2024 8 AM 19 Good Valencia and Columbus Square 07/28/2024 8 AM 16 Good Valencia and Legacy 07/28/2024 8 AM 20 Good Victory and Tustin Ranch Rd. 07/28/2024 8 AM 18 Good Warner and Armstrong 07/28/2024 8 AM 16 Good Warner Avenue 07/28/2024 8 AM 20 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Monday, July, 29, 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) Unhealthyfor 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 07/29/2024 8 AM Matter 11 Level of Concern Good Hangar Fenceline - E Side 07/29/2024 8 AM 13 Good Hangar Fenceline - N Center 07/29/2024 8 AM 13 Good Hangar Fenceline - N Corner 07/29/2024 8 AM 13 Good Hangar Fenceline - NE Corner 07/29/2024 8 AM 13 Good Hangar Fenceline - NE Side 07/29/2024 8 AM 15 Good Hangar Fenceline - S Corner 07/29/2024 8 AM 13 Good Hangar Fenceline - S Side 07/29/2024 8 AM 14 Good Hangar Fenceline - SW Corner 07/29/2024 8 AM 15 Good Hangar Fenceline - SW Side 07/29/2024 8 AM 15 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/29/2024 8 AM Particulate Matter • 14 Level of Concern Good Legacy Road 07/29/2024 8 AM 12 Good Moffett and Tustin Ranch 07/29/2024 8 AM 23 Good Valencia and Armstrong 07/29/2024 8 AM 12 Good Valencia and Columbus Square 07/29/2024 8 AM 13 Good Valencia and Legacy 07/29/2024 8 AM 13 Good Victory and Tustin Ranch Rd. 07/29/2024 8 AM 13 Good Warner and Armstrong 07/29/2024 8 AM 11 Good Warner Avenue 07/29/2024 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Tuesday, July, 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) Unhealthyfor 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 07/30/2024 8 AM Matter 12 Level of Concern Good Hangar Fenceline - E Side 07/30/2024 8 AM 12 Good Hangar Fenceline - N Center 07/30/2024 8 AM 16 Good Hangar Fenceline - N Corner 07/30/2024 8 AM 16 Good Hangar Fenceline - NE Corner 07/30/2024 8 AM 15 Good Hangar Fenceline - NE Side 07/30/2024 8 AM 16 Good Hangar Fenceline - S Corner 07/30/2024 8 AM 17 Good Hangar Fenceline - S Side 07/30/2024 8 AM 17 Good Hangar Fenceline - SW Corner 07/30/2024 8 AM 18 Good Hangar Fenceline - SW Side 07/30/2024 8 AM 16 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/30/2024 8 AM Particulate Matter • 16 Level of Concern Good Legacy Road 07/30/2024 8 AM 15 Good Moffett and Tustin Ranch 07/30/2024 8 AM 21 Good Valencia and Armstrong 07/30/2024 8 AM 14 Good Valencia and Columbus Square 07/30/2024 8 AM 14 Good Valencia and Legacy 07/30/2024 8 AM 15 Good Victory and Tustin Ranch Rd. 07/30/2024 8 AM 15 Good Warner and Armstrong 07/30/2024 8 AM 13 Good Warner Avenue 07/30/2024 8 AM 17 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected. Wednesday, July, 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) Unhealthyfor 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 07/31/2024 8 AM Matter 13 Level of Concern Good Hangar Fenceline - E Side 07/31/2024 8 AM 8 Good Hangar Fenceline - N Center 07/31/2024 8 AM 17 Good Hangar Fenceline - N Corner 07/31/2024 8 AM 17 Good Hangar Fenceline - NE Corner 07/31/2024 8 AM 18 Good Hangar Fenceline - NE Side 07/31/2024 8 AM 17 Good Hangar Fenceline - S Corner 07/31/2024 8 AM 17 Good Hangar Fenceline - S Side 07/31/2024 8 AM 18 Good Hangar Fenceline - SW Corner 07/31/2024 8 AM 19 Good Hangar Fenceline - SW Side 07/31/2024 8 AM 19 Good • •24-Hour Hangar Fenceline - W Side Period • • 07/31/2024 8 AM Particulate Matter • 17 Level of Concern Good Legacy Road 07/31/2024 8 AM 15 Good Moffett and Tustin Ranch 07/31/2024 8 AM 23 Good Valencia and Armstrong 07/31/2024 8 AM 16 Good Valencia and Columbus Square 07/31/2024 8 AM 14 Good Valencia and Legacy 07/31/2024 8 AM 14 Good Victory and Tustin Ranch Rd. 07/31/2024 8 AM 18 Good Warner and Armstrong 07/31/2024 8 AM 16 Good Warner Avenue 07/31/2024 8 AM 17 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. oon Hazardous 425 to 504 Health warning of emergency conditions: ever. . - likely • be affected.