Indoor Air Quality Report, May 10, 2002, NYC School

NYC 9/11 Public Portal Document

104 East 25th St., 10th Floo," New York, New York 10010 A vwvw.atc-enviro.com 212.353.8280 Fax 212.353.8306 ASSOCIATES ING.

May 13, 2002

Mr. Bernard P. Orlan Direc :or, Environmental Health & Safety New fork City Board of Education 28-11 Queens Plaza North Long Island City, NY 11101-4008

Re; Indoor Air Quality Assessment High School of Economics and Finance (M833) 100 Trinity Place New York, New York 10006 ATC Project No. 15-19125-0291

Dear Mr. Orlan;

ATC Associates Inc. (ATC) is pleased to provide this report of indoor air quality (lAQ) measu'ements collected on May 10, 2002 at the referenced school. The New York City Board of Education (BOE) requested these measurements as part of a program to determine if acceptable indoor air quality is being maintained.

SCOPE OF WORK

ATC conductec. this evaluation to assess the basic parameters of temperature, relative humidity, carbon dioxide (CO,) and carbon monoxide (CO).

Total volatile organic compounds (TVOCs) and respirable particulates were also measured.

Kevin Fitzpatrick, Environmental Technician of ATC’s New York City office, conducted the assessment. ATC’s findings and conclusions are based on a visual inspection, real-time enviror mental measurements and conditions present in the school at the time of the assessment.

.ATC measured temperature, relative humidity, CO, and CO with a Q-Trak® Model 8551, manufactured by TSI, Inc.

ATC measured concentrations of respirable particulates (PM25) with a Dust-Trak® Aerosol Monitor Model 3520, manufactured by TSI, Inc.

ATC measured concentrations of TVOCs using a RAE Systems, Inc. MiniRAE® photoionization detector (PID).

The assessment was performed consistent with generally accepted indoor air quality assessment practices. As with all such assessments, there were inherent limitations created by constraints of time, operational and work practice variability, variations in indoor air quality parameters and sampling and analytical accuracy.

The results of the sampling represent conditions found on the dates of the survey and may not represer t conditions found at other times. The information presented in this report should be used

CONFIDENTIAL, CITY_21MC100_003462537 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000180019