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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_014659962 TIME LOCATION ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT DATE _ 0i/21/02 PROJECT NO. bocation Occup- L'emperature 132 B Carbon Dioxide (ppm) н63 451 Carbon Monoxide (ppm 1320 132D 134 Stair 1 128 ef floor bbby ly 128 hallvazia by the Stair 3 Ist floos lobby вy elevator Guideline levels ASHRAE/AIHA Otsic Comments: 69.3 69.8 69.3 68.7 67.7 69.9 69.8 68.6 69.5 Relative Humidity (%) 26.5 26.6 26.4 26.5 27.4 26.6 26.0 27.4 26.8 473 488 490 459 471 479 478 69.9 68-75"F/winter 73-79°F/summer 42.2 26.6 30-60% 50.0 481 Outdoor level + 700 ppm 470 9 ppm The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: atory Date: 01/21 NYC-WTC_000174708 Page Cot 6 19125-02 Respirable Particulates(ug/m) TVOCS ppin) 36 0.0 39 0.0 38 0.0 40 57 39 0.0 0,0 0.0 48 51 0.0 0.0 61 0.0 60 65 ug/m" 24-hour average 71 D.0 1 ppm 0,0

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NYC-WTC_000174708Source: NYC Law Department, mirrored locally

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