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NYC-WTC_000209141

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000209141–000209148
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NYC 9/11 Public Portal Document CITY_21MC100_009253262 TIME 1000 -- ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT Page 50f_8 19125-0297 LOCATION_PS/IS89N DAIE 5/24/02 _PROJECT NO. Location Оссиp. Temperature EM RelaiveSYCarhonr Dioxide Humiditi (epm) LCarbon Monoxide (ppm) Respirable icitlates(ug/iue) 419 432 17 18 430 428 (HA11) 426 Stair 2(4A11) 408 410 (нA1L). 404 27 70.4 71.0 71.2 70.4 71.0 70.5 70.8 70.2 71.7 37.7 710 20 39.1 39.8 386 380 865 857 18 38.2 38.3 691 623 619 667 679 19 24 23 28 2z 27 406(4711) Guideline levels ASHRAE/AIHAEPA 68-75°F/winter 73-79°F/summer 38.3 42.5 39.1 30-60% 870 752 Outdoor level + 700 ppm 24 9 ppm 27 65 ug/m 24-lour average Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Jonj (ha, Date: 5/24/02 TVOC- (PPM) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 0.0 1 ppı NYC-WTC_000209145 05/28/2002 10:48 FAX 212 353 8308 ATC Ø011/014

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NYC-WTC_000209145Source: NYC Law Department, mirrored locally

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