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NYC-WTC_000229924

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000229924–000229927
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NYC 9/11 Public Portal Document SUBJECT IO PROTECTIVE ORDER NO. CONFIDENTIAL, CITY_21MC100_003386236 SEPT. 2008 NYC-WTC_000229927 TIME 15:35 LOCATIONPS150 M Location Оссцp. 402 Hall by Rest Rme. 401 Hall by West Stair: 50l 502 (Hall)502 Hall by Rest Rons. 503 504 Guideline levels ASHRAE/AШA/EPA ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT DATE 3/1/02 PROJECT NO. Tem perature (F) Relative Humidity (%), Cai bon Dioxide (ppi) Carbon Monoxiile PPD) 72.9 16-0 490 74.5 73.5 74.7 17-3 16-3 509 499 17.0 516 72.9 16.0 501 72.8 15.8 531 74.9 74-6 73.0 • 73.4 68-75 F/winter 73-79"F/summer 16-8 16.6 525 536 549 16.0 15.4 30-60% 540 Outdoor level + 700 ppm Comments: C 9ppm The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: gich Date: 3/11/02 Page Yo1 4 19125-289 Respirable Pritieulates(ug/) 9 8 12 8 7 13 9 10 65 ug/m" 24-hour average IVOCS (PPM) I ppu

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NYC-WTC_000229927Source: NYC Law Department, mirrored locally

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Field report containing temperature, humidity, and gas readings from indoor air quality testing at P.S. 150M.

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