Air Quality

  • The San Juan Unified School District believes in providing a safe and appropriate environment for all students and employees. In keeping with this belief, the following guidelines have been developed to comply with the Sacramento Metropolitan Air Quality Management District regulations regarding hazardous ozone episodes.

    A. General Information About Ozone Episodes:
    1. The San Juan Unified School District acknowledges the potentially harmful effects of elevated ozone concentration on the health of students and employees and accepts the responsibility for:
    a. Cooperating with the Sacramento Metropolitan Air Quality Management District (SMAQMD), the California Air Resources Board and other agencies governing air pollution control.
    b. Notification and instruction of students and employees regarding ozone episode procedures.
    c. Appropriate modification of school programs and activities.
    2. Principals and their designees should be aware of the current data regarding ozone episodes as it relates to the curtailment of school programs and activities.

    B. Notification for Ozone Episodes:
    1. When air pollution reaches a certain unhealthful level, the Sacramento Metropolitan Air Quality Management District, as required by state law, will issue a notice to school districts indicating the expected level of poor air quality. Notification regarding an ozone episode is typically e-mailed to school districts 1-6 hours prior to the critical period.
    2. When an ozone notification is received by the district, each school site/principal will be informed via e-mail or telephone that an "ozone episode" exists, and that all vigorous physical activities shall be curtailed.
    3. At the Unhealthy level, outdoor activities requiring sustained, vigorous exercise for a duration of one hour or longer must be rescheduled or alternatively undertaken for less than one hour.
    Vigorous physical activity is defined as that which increases respiration more than two times that of a person at rest. Normal respiration at rest is 15-20 breaths per minute. There are activities that do not increase the volume of air intake greatly and which may be undertaken with discretion. The curtailment of activities should be limited to the outdoors only.
    C. Responsibilities of the Principal or Designee at Each School ­Site:
    Step 1: Notify all personnel in the school whose programs will be affected by the ozone episode.
    Step 2: Restrict physical activity of students and employees in the school according to the guidelines described above, by directing each teacher to:
    a. Notify students in his/her class regarding the ozone episode.
    b. Curtail or reschedule vigorous outdoor activities for his/her students.
    c. Discontinue all outdoor activity for susceptible students, especially those with heart and lung disease.
    Step 3: Lift the restriction when informed that the ozone content has dropped below the reported episode level.
    D. Ozone Episode Chart:
    1. The following chart shows the various levels of ozone that result in a reportable episode.
    2. The Air Quality Index (AQI) is a uniform method of describing air quality conditions.  It relates ozone measurements in parts per million (ppm) to a numerical scale of 0-500. 
     

    CONDITION

    AIR QUALITY INDEX (AQI)

    EPISODE LEVEL AND RECOMMENDED ACTION

         Extremely

         Hazardous

          

     
    401 - 500

     

    At this very unhealthful level, everyone should discontinue all outdoor activities and remain indoors. Susceptible persons, especially those with heart or lung disease, should stay indoors.

               

        Hazardous

          

     
     
    301 - 400

     

    At this very unhealthful level, everyone, including healthy adults and children, should discontinue all vigorous outdoor exercise.  Susceptible persons, especially those with heart or lung disease, should stay indoors.

             Very

         Unhealthy

          

     
    201 - 300

    At this unhealthful level, everyone, including healthy adults and children, should discontinue vigorous or prolonged outdoor exercise of one hour's duration or longer.  Susceptible individuals, especially those with heart or lung disease, should discontinue all outdoor activities.

        Unhealthy

    151 - 200

     
     

     

    Active children and adults should avoid vigorous or prolonged outdoor exercise of one hour’s duration or longer.  People with respiratory disease, such as asthma should discontinue vigorous or prolonged outdoor exertion.

     Unhealthy for

        Sensitive

          Groups 

          

    101 - 150

    Active children and adults, and people with respiratory disease, such as asthma, should limit vigorous or prolonged  outdoor activities.

         Moderate  

    51 - 100

    Unusually sensitive people should consider limiting vigorous outdoor activities.

            Good

    0 - 50

    No health impacts are expected when air quality is in this range.

    Questions regarding this memorandum may be directed to Jenny Amador, Program Specialist, Health Services, 971-7643.

    Current information and updates can be found by visiting www.SpareTheAir.com 
Last Modified on June 27, 2016