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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 014659960 ATC ASSOCIATES, INC. TIME INDOOR AIR QUALITY FIELD REPORT LOCATION PS 89 M. 4t 8. 3id foas DATE 0/21/02 _PROJECT NO. bocation Occup. Temperafure 419 Stair 1 332 319 330 70.9 69.3 69.4 67.8 68.3 Relative Humidity (%) 23.6 24.4 Carbon Dioxide (ppm) 448 457 455 Carbon Monoxide (ppm) 24.5 24.6 24.2 25.8 328 Gym 326 Hallwary 316 Guideline levels ASHRAE/AIHA 68.6 6 8.2 68.4 26.6 26.0 469 458 460 499 459 68.6 69.8 68-75°F/winter 73-79"F/summer 26.2 26.5 30-60% 460 461 Outdoor level + 9ppm 700 ppm Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: He batoy Date: 01/21/02 NYC-WTC_000174706 Page 4016 Respirable Particulates(ug/m) 31 35 38 39. 38 34 35 36 41 36 65 ng/m" 24-hour averagc TVOCS (ppm) 0.0 0,0 0,0 0,0 0,0 0,0 0,0 0.0 0.0 0,0 I ppoI

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NYC-WTC_000174706Source: NYC Law Department, mirrored locally

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