NYC-WTC_000212701

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan May 23,2002 Indoor Air Q’uality Assessment Page 4 P. S. 234M ATC Project No. 15-19125-0279

* The mea.surements made during this assessment were instantaneous readings, the NPAAQS is a 24-hour average.

TVOC Concentration

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: • The 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. Concenti'ations of respirable particulates, CO2, CO, and TVOCs were below applicable standards and guidelines. 2. Thirty-nine (39) indoor measurements for temperature were below the range of 73 to 79'^F (at 50 percent relative humidity) as recommended by ASHRAE Standard 55-1992 during the summer season. 3. Thirty-one (31) indoor measurements for relative humidity were below the ASHRAE- recommended range of 30 to 60 percent for occupant comfort.

It is our pleasure to provide these indoor air quality service,s to the New York City Board of Education. If you have any questions about this report, please call (212) 353-8280, extension 211 or212.

Sincerely, J rCASSOCIA TES INC. Reviewed by;

Amel Jav^y James R. Cohn, CIH, CSP Senior Project Manager Regional Manager, Industrial Hygiene Division

Attachment

CITY_21MC100_002852011

NYC-WTC_000212704