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Indoor air quality field report for PS 234M, Feb 2002

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Field report recording indoor air quality parameters at PS 234M on February 21, 2002, noting ongoing work inside the school.

NYC-WTC_000182893–000182898
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NYC 9/11 Public Portal Document CITY_21MC100_003101793 TIME 1600 ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT LOCATION PS234M DATE 221/02 PROJECT NO. Location Оссир. Temperature ("F) Relatiye, Humidity (%) Carbon Dioxide (ppm) Carbon Monoxide (ppm) 319 323 325 310 329 Hallby fuir! 316 318 320 322 Guideline levels ASHRAE/AIHA/EPA 68-75"F/winter 73-79"Fsummer 30-60% Outdoor level + 700 ppm 9 ppm Comments: Sanding wills in some TOQIS (316) The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Jajch Date: 2/21/02 Page 6 ol 6 19125 - 279 Respirable Particulates(ug/nl) 35 36° 38 37 36 39 66 50 52 50 65 ug/m 24-hour average TVOCS (ppm) 1 ppm NYC-WTC_000182898

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NYC-WTC_000182898Source: NYC Law Department, mirrored locally

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