...“If you can smell the humanity and taste the humidity, you know you have a ventilation issue,” Blake says.
Next comes a device that resembles a remote control and detects carbon dioxide (CO2) levels.
He runs a wire through what looks like a windsock and holds one end to the CO2 monitor, the other to the ceiling vent. The tool, which Prill sewed for him from a lampshade, funnels air directly into the device for a better reading.
Blake uses carbon dioxide as an indicator of whether enough fresh air passes through a room or if students are breathing germs, allergens and chemicals that accumulate in stagnant air. All of these trigger asthma — one of the leading causes of both school absences and child hospitalizations, Blake says.
When Blake started this work in 1995, Bellingham opened its doors to him first. It was a courageous move, he says. For most schools throughout Oregon and Washington — and the rest of the country — there is no Dave Blake. There is no ghostbuster to call...
http://kuow.org/post/they-need-go-environmental-and-health-costs-portable-classrooms
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