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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_014659957 TIME LOCATION PS 89M. 5th.. foor ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT DATE 01/21/02 _PROJECT NO. Socation Occup: Temperature Outside Relative Humidity (%) 49.3 506 502 42.2 69.4 71.2 30.8 28.3 25.8 Carbon Dioxide: (ppm) 469 471 467 Carbon Monoxide (ppm) 501 hallway Stair 3 508 504 517 Library 5/5 Guideline levels ASHRAE/AIA 71.5 71.6 7/.7 72,5 7/.3 74,4 74.0 68-75°F/winter 73-79°F/summer 456 502 26.7 27.7 27.5 27.6 258 509 498 482 452 23.2 30-60% 491 Outdoor level + 700 ppm 9 ppm Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Autong Date: 01/21/02 NYC-WTC_000174703 Page 101 6 19125-0297 Respirable Particnlates(ug/m') 70 38 49 31 60 49 35 40 35 38 65 ug/m' 24-hour average TVOCS (ppm) 0.0 0.0 0.0 0,0 0.0 о,0 0,0 0,0 0.0 1ppm

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NYC-WTC_000174703Source: NYC Law Department, mirrored locally

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