The document discusses three key factors - invisible particles, irritant gases, and infectious microbes (the "3 I's") - that can affect indoor environmental quality in classrooms and impact student attendance. It provides examples of specific contaminants that fall under each factor and their potential health effects. It also discusses strategies for improving classroom air quality, such as filtration systems, ventilation standards, and cleaning procedures.

1. The 3 I’s of Classroom IEQ Gerald Lamping Director for IAQ

2. What factors affect the classroom environmental conditions The three causes for poor classroom environmental quality

4. Sources of the I’s Infiltration dust and gases enter from open penetrations

5. Which is the culprit ??? Invisible Particles Irritants Infection Tobacco smoke Gases Colds / sinusitis Pollen Perfumes Flu Molds lotions, hair spray, aerosol Poor hygiene Combustion Exhaust Ozone practices Fibers Animals Dander Chemicals in and out of the classroom markers paints, science supplies Cockroaches Strong Odors Snacks attract pests air fresheners, off gassing Dusts Dust Mite Carpet, stuffed animals, Pillows, curtains, air vents chalk, cushions, ‘fluffy’ stuff

10. Particle Size & Quantity Matters An increase in 10 micrograms per cubic meter of indoor course particle pollution, there is a 6 % increase in the number of days of cough, wheeze, or chest tightness in asthmatic children. An increase in 10 micrograms per cubic meter of indoor fine particle pollution there is a 7 % increase in days of wheezing severe enough to limit speech. Johns Hopkins University School of Medicine February 2009

11. Hand Held Particle Counter Six Channels of Particle Sizes from .3 to 10 Micrometers in diameter

12. Cleaning Classroom with HEPA type vacuum cleaners Elementary School Classroom 332 4107 15828 77752 119679 157328 3135056 1328 9271 17793 362471 25047 100 1,000 10,000 100,000 1,000,000 10,000,000 0.1 1 10 Particle Size, Micrometers

13. Classroom Cleanliness

27. Total VOC levels reduced from 60 ppm in Girls Dance Studio to less than 25 ppm using gas phase filters in the Air Handling Unit for the Studio VOC removal after Construction Activities

28. Air Quality Health Alerts

30. Ozone Pollution

31. Unsealed Penetrations Contaminated air flows through unsealed penetrations for pipe, conduit and duct into the return air conveyance system of HVAC

33. Increase in Attendance Student Attendance Rates are up 0.6% from the prior year

35. Healthy School Building www.cdc.gov/healthyyouth/asthma/index.htm CDC Asthma Friendly School Toolkit www.asbointl.org ASBO International Environmental Resource Center www.purafil.com EnerSave IAQ Analysis www.ashrae.org ASHRAE Std 62.1-2007 and Addenda Ventilation for Acceptable Indoor Air Quality www.epa.gov/iaq/schools EPA Tools for Schools Toolkit

37. Carpet Removal Program Replaced over 30,000 square feet of carpet with new VCT tile over the 2008 summer

38. Green Cleaning Cleaning Chemicals and Dispensing Systems that do not contain harmful ingredients and vapors

43. Drying Equipment Rug Fans Dehumidifiers Humidity Meters Moisture Meters

44. Earth Retainer Block Repair Damaged Earth Retainer Blocks around perimeter of building allow storm water and animals to get access under the building