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NYC-WTC_000209137

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000209137–000209140
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NYC 9/11 Public Portal Document CITY_21MC100 009253212 TIME8:10 ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT LOCATION PS89M DATE 2/6/02 PROJECT NO. Location Осеuр. Nlen perature (F) Relative Humidity (%) Carbon Dioside (Ppoi) Carbon Monoxide (ppm) North Playgraund South Playground Exit North 31.0 25.7 505 36.5 25.9 500 36.0 25.6 498 Exit South 35.8 25.4 493 NE Corner 36.3 24.2 490 NW Corner 35.1 24.9 485 SE Corned 36•5 25.5 483 svv Corner 35.3 25.7 480 Inside Exit North 69.3 32.0 526 Inside Exit South Guideline levels ASHRAE/AIHA/EPA 69.5 68-75°F/winter 73-79"F/summer 31-5 30-60% 535 Outdoor level + 700 ppm 9 ppm Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Jing Chery Date: 2/6/02 NYC-WTC_000209137 Page 1of 8 19125- 297 Respirable Particiilates(ug/m) TVOC. (ppm) 48 50 53 47 45 48 49 50 34 33 65 ug/m" 24-hour average 1 ppm

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NYC-WTC_000209137Source: NYC Law Department, mirrored locally

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