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NYC-WTC_000226259

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000226259–000226272
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NYC 9/11 Public Portal Document CITY_21MC100 002895674 ATC ASSOCIATES, INC. Page 4 ol _14_ INDOOR AIR QUALITY FIELD REPORT Time: 10-10 AMCATION: 90 Trinity Place fIS for Lecadlers LOCATION: 90 Trinity Place /HS for Leadership and public services DATE: ' S 20/02 PROJECT NO: 15-19125-0290 Location Occupants Temperature (F) Relative Carbon Carbon Respirable Humidity Dioxide p Monoxide Particulate TYOC: (ppm) (%)- (ppm) (ppm) 5(ug/m) Roan # 915 teellway GT5DE Don#o15 Roau # 909 Roa + 905 Roam# 906 STAIRWELL 'A' To gtt Floct Rooud 805 Roar* 815 Hallwan ousint Romn + 815 Rom # 809 Guideline levels ASHRAE/AIHA 7 32 22 731 22-9 72-7 72.9 73-0 72.6 232 740 74.2 13:1 68 - 75°F/winter 73-79 °F/summer 220 988 6 0.0 262 1079 0.0 26:3 1004 298 13391 9 •0 28:3 1011 0-0 25:1 195 16 0 .7 332 1824 927 1900 (1 26 00 00 30% 1480 294 1334 30-60% Outdoor level 0 9ppin 25 22 65 ug/m 0.0 1 ppm +700 ppm Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature: Date: 5/20/02 NYC-WTC_000226262

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NYC-WTC_000226262Source: NYC Law Department, mirrored locally

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