NYC 9/11 Public Portal Document
600 West Cummings Park. Suite 6500
Woburn, Massachusetts 01801-6350
www.atc-enviro.com
781.932.9400
Fax 781,932.6211
ASSOCIATES INC.
February 6, 2002
Mr. Bernard P. Orlan
Director, Environmental Health & Safety
New York City Board of Education
28-11 Queens Plaza North
Long Island City, NY 11101-4008
Re: Indoor Air Quality Assessment
P.S. 89M
ATC Project No. 15-19125-0297
Dear Mr. Orlan:
ATC Associates Inc. (ATC) is pleased to provide this report of indoor air quality (lAQ)
measurements collected on February 5, 2002, at the referenced school. The New York City
Board of Education (BOE) requested these measurements to evaluate air quality in the school
building prior to re-occupancy.
SCOPEOFWORK
ATC conducted this evaluation to assess the basic parameters of temperature, relative humidity,
carbon dioxide (CO,) and carbon monoxide (CO).
ATC measured temperature, relative humidity, CO, and CO with a Q-Trak® Model 8551,
manufactured by TSI, Inc.
ATC measured concentrations of respirable particulates (PM2.5) with a Dust-Trak® Aerosol
Monitor Model 8520, manufactured by TSI, Inc.
ATC measured concentrations of TVOCs using a RAE Systems, Inc. MiniRAE® photoionization
detector (PID).
Mr. Jimmy Choy, Industrial Hygienist of ATC’s New York City office, conducted the
assessment.
ATC’s findings and conclusions are based on a visual inspection, real-time environmental
measurements and conditions present in the school at the time of the assessment.
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