NYC-WTC_000215187

NYC 9/11 Public Portal Document

Mr. Bernard P. Orlan March 1,2002 Indoor Air Quality Assessment Page 4 H.S. for Leadership & Public Service (M894) ATC Project No. 15-19125-0290

TVOC Conc^traiion

The TVOCs concentrations was 0 ppm inside the building. These concentrations were below the AIH A guideline for odor control of 1 ppm. The outdoor TVOC concentration was also 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 of CO2, CO and TVOCs, were within applicable standards and guidelines. 2. Ten (10) temperature measurements were below 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. Eight (8) of the relative humidity measurements were within the ASHRAE recommended range of 30 to 60 percent for'occupant comfort. All other measurements were below the ASHRAE recommended range. 4. None of the indoor respirable particulate measurements were above the EPA recommended guideline for children'and sensitive individuals of 40pg/m3 ■ Three (3) of the outdoor readings were above the NPAAQS of 65 gg/m^ and another three (3)'outdoors readings were above the USEPA recommended guideline for sensitive individuals and children of 40 gg/m3.

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 261.or212.

Sincerely, Reviewed by: A rc ASSOC!A TES INC.

Andreas C. Andreou James R. Cohn, CIH, CSP Senior Project Manager Regional Manager Industrial Hygiene Division

Attachment

CITY_21MC100_002871930

NYC-WTC_000215190