Indoor Air Quality Report, April 9, 2002, NYC School

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan April 10,2002 Indoor Air Quality Assessment Page 4 H.S. of Economics and Finance (M833) ATC Proi ect No. 15-19125 -0291

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 interior of the building appeared clean and free of dust and debris; • 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. Concentrations CO2, CO and TVOCs were below applicable standards and guidelines. 2. Thirty-four (34) of the indoor measurements for temperature measurements were above the range of 68 to 75°F (at 50 percent relative humidity) recommended by ASHRAE Standard 55-1992 during the heating season (wintertime conditions). 3. Ail of the indoor measurements for relative humidity were within the ASHRAE recommended range of 30 to 60 percent for occupant comfort. 4. None of the indoor or outdoor measurements for PM2.5 were above the NPAAQS of 65 pg/m3 24-hour average concentration of particulate matter 2.5 micrometers or less in aerodynamic diameter and the USEPA recommended concentration of 40 pgdn^ for sensitive individuals and children. Eight (8) of the twelve (12) instantaneous outdoor reading were above the USEPA recommended concentration of 40 pg/m^ for sensitive individuals and children.

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, Reviewed by: A TC ASSOCIA TES INC.

James R. Cohn, CIH, CSP lenior Project Manager Regional Manager Industrial Hygiene Division

Attachment

CONFIDENTIAL, CITY_21MC100_003462201 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000179993