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Indoor air quality field report, PS 89M, Jan 17 2002

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Field report documenting indoor air quality measurements including temperature, humidity, and TVOCs at PS 89M on January 17, 2002.

NYC-WTC_000174709–000174713
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NYC 9/11 Public Portal Document CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY_21MC100_ 014659989 TIME 8:55 LOCATION Location Hall by 419 Stain# 1 430 426 Hall by 4o 415 408 406 404 M89 Occup. - 2 ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT DATE 1/17/02 _PROJECT NO. Temperature ("F) Relative Humidity (%) Carbon Dioxide (ppш) 71.2 21.0 499 71.3 20.9 491 71.4 20.7 449 71.4 20:7 465 70.7 20.9 460 7018 20. 6 449 71.8 21.3 74.1 2/.7 460 572 73.6 20.6 455 401 (11A11) Guideline levels ASHRAE/AIHA/EPA 73.0 68-75°F/winter 73-79°F/summer 20.4 30-60% 460 Ouidoor level + 700 ppm Comments: Carbon Monoxide (ppu) 0 9 ppm The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Ji Chor Dale: 1/11/02 NYC-WTC_000174711 Page 3 of 5. 19125-297 Respirable Particulates(ug/m) 25 23 23 28 27 24 19 26 22 25 65 ug/m 24-hour average TVOCS (Ppm) 0 1 ppm

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NYC-WTC_000174711Source: NYC Law Department, mirrored locally

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