Indoor air quality report, M833 school, June 2002

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan June 17, 2002 Indoo ' Air Quality Assessment Page 4 H.S, cf Economics and Finance tM833) ATC Project No. 15-19125-0291 TVOC Concentration

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

obsi:rvations

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; • b o smoke odor was detected in the building;

FINIUNGS

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

1. Indoor concentrations of CO,, CO, and TVOCs were below applicable standards and guidelines. 2. .Ml of the indoor measurements for temperature were within the range of 73 °F to 79°F (at 50 percent relative humidity) recommended by ASHRAE Standard 55-1992 during the summer season. 3. /ill of the indoor measurements for relative humidity were within ASHRAE recommended range of 30 to 60 percent for occupant comfort. 4. Tione of the indoor measurements for respirable particulates were above the NPAAQS of 65 pg/m’ 24-hour average concentration of particulate matter 2.5 micrometers or less i:n serodynamic diameter and 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, ext 211 or 212.

Sincerely, Reviewed by: /(TC ASSOC lA TES INC.

Amei J^l James R. Cohn, CIH, CSP Senior ^oject Manager Regional Manager Industrial Hygiene Division Attachment

CONFIDENTIAL, CITY_21MC100_003462886 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000180092