NYC-WTC_000188588

NYC 9/11 Public Portal Document

ATC ASSOCI ATES, INC. l‘age^ I rut INDOOR AIR QUALITY FIELD REPORT

S'fllYVESANT LI I cm SCHOO I. date l/HTht PROJECT NO. 19125-0246

i iicaiiiHL I Oceiip. remi)Cralme J Relative' Carbon Dioxide Carbon Monoxide Respirable •rvocs do Humidity (%) (ppm) _ Y‘’"% V _ Par^ula^u^: (ppm)

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i (iH -7S'’l''/3viiiler 30-60% Outdoor level + 9 ppm s 65 ng/ni <3 ■ r- 1 ppm H i! r \ I \ 111 \ 73-79''l'7-sunimer 700 ppm 24-liour average i-C I [M

I o o I KM J bn ( ) Dues ( ) Does not meet established indoor air quality guidelines. o o O CO Date: /f f CO

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NYC-WTC_000188591