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NYC-WTC_000214394

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NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan June 6, 2002 Indoor Air Quality Assessment Page 4 P.S. 15QM ATC Project No. 15-19125-0289 * The measurements made during this assessment were instantaneous readings, the NPAAQS is a 24-hour average.

TVOC Concentrations

TVOCs were not detected anywhere inside the building (0.0 ppm). The outdoor TVOC concentration was also 0.0 ppm.

OBSERVATIONS

During this assessment, ATC noted the following: • There was construction work going on in the plaza; • The school building was occupied at the time of the assessment; • No smoke odor was detected in the building;

FINDINGS

Based on the real-time measurements, the following findings are presented:

1. Concentrations of indoor respirable particulates, CO, and TVOCs were within applicable standards and guidelines. 2. Two (2) of the indoor temperature measurements were above the range of 73 to 79°F (at 50 percent relative humidity) as recommended by the ASHRAE Standard 55-1992 during the mechanical cooling season (summertime conditions). 3. All of the indoor relative humidity measurements were within the ASHRAE-recommended range of 30 to 60 percent for occupant comfort. 4. One (1) CO measurement was above the range recommended by ASHRAE 62-1999.

It is our pleasure to provide these indoor air quality services to the New York City Board of Education. If you have any questions about this report, please call (212) 353-8280, extension 211 or 212.

Sincerely, /I TC ASSOCIA TES INC.

-Yiannis Efstathiou Senior Project Manager

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CITY_21MC100_002870703

NYC-WTC_000214397

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NYC-WTC_000214397Source: NYC Law Department, mirrored locally

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