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Indoor air quality field report, PS 89M, Jan 21 2002

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Field report documenting indoor air quality measurements including temperature, humidity, and TVOCs at PS 89M on January 21, 2002.

NYC-WTC_000174703–000174708
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NYC 9/11 Public Portal Document CONFIDENTIAL, SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008 CITY 21MC100 014659958 ATC ASSOCIATES, INC. TIME INDOOR AIR QUALITY FIELD REPORT LOCATION P$- 89M 584 floors 01/21/02 _ PROJECT NO. Bocation Occup: 510 512 Temperature -(°г) 72.3 72.2 Relative Humidity (%) 259 24.7 Carbon Dioxide (ppm) Carbon Monoxide (ppm) 481 45/ Stair 2 526 528 532 5/9 4th floor Stair 401 407 Guideline levels ASHRAE/AIIA 70.6 72.8 71.4 71.6 72.7 725 71.4 71.6 68-75°T/winter 73-79°F/summer 26.6 24.2 24.5 238 23.7 23.7 23.2 23.4 30-60% Comments: 431 454 473 458 438 456 459 462 Outdoor level t 700 ppm 9ppm The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signatre: It stag Date: 01/21/02 NYC-WTC_000174704 Page 2 nt 6 19125-02 Respirable Particulates(ug/m*) 39 43 6/ 55 41 48 38 48 3/ 33 65 цg/m" 24-hour average TVOCS (ppm) 0•0 0,0 0.0 0.0 0.0 O. 0 0.0 0.0 0. 0 1ppm

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NYC-WTC_000174704Source: NYC Law Department, mirrored locally

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