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Indoor Air Quality Field Report, 90 Trinity Place, May 2002

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ATC Associates indoor air quality field report for 90 Trinity Place documenting environmental conditions in May 2002.

NYC-WTC_000180206–000180219
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Scanned page image, NYC-WTC_000180213
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NYC 9/11 Public Portal Document CONFIDENTIAL, SEPT. 2008 Time: 12:45 PM LOCATION: 90 Trinity Place /HS for Leadership and public services Location ATC ASSOCIATES, INC. INDOOR AIR QUALITY FIELD REPORT Relative Humidity (%) 37.1 Page 8of_14_ DATE: 51/02 PROJECT NO: 15-19125-0290 Occupants Temperature (*F) Carbon Respirable Monoxide Particulate. TVOCs (ppm) Out Doors MAIN ENTRANCE Out Düürs NORTHOFMAIN ENTRANCE Out Doors SOUTM of MANN ENTRANCE LoBby ist FlooR ELEVATOR LOBBY'ETOR 14tufloor Hallway Room # 1406 Ketchew: 1405 StARWELiNtO /3ttiFlook Roau # 1403 Guideline levels ASHRAE/AIIA (ppm) 425 (ppm) L (ug/ml) 20 6 Foll FulL 22:8 12.9 36.5 407 727 36.5 409 739 42.2 647 74.5 439 699 15.9 449 829 79549-21939 503 979 275 487|916 17.8 488|1480 68 - 75°F/winter 30-60% Outdoor level 73-79 °F/summer +700 ppm 87 0.0 64 48 O.0 0.0 9 9 o•0 31 0 0 9 ppm 6 19 6 2 65 ng/m 0. 0 0.0 о 0 0.0 1 ppm Comments: The assessed location(s) () Does () Does not meet established indoor air quality guidelines. Signature:_ Date: 5/8/02 CITY 21MC100 003464233 NYC-WTC_000180213

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NYC-WTC_000180213Source: NYC Law Department, mirrored locally

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