Labor relations correspondence regarding site locations, Sep 2001

NYC 9/11 Public Portal Document

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Adelaide Associates, LLC 1

Scope of Services:

Adelaide Associates was contacted by Mr. Mindy Gordetsl^ of Asbestos Abatement Corporation (AAC) to do Indoor Air Quality testing on three floors and the main lobby of ISO Williams Street, New York, New York. . Our site contact.was Luis Cortes, and the Investigation took place on September 23, 2001.

The site is currently occupied by the New York City Administration for Children Services. The request for Air Quality testing came due to complaints arising from the World Trade Center bombings.

Sampling Methodology

Real-Time Evaluations:

Temperature and Humidity are measured using a Testo451 electronic Thermometer/Hygrometer.

Carbon Monoxide samples were taken using a Kane-May direct reading instrument, electronically zeroed, and sensitive to 1 ppm of CO.

Levels measured throughout th© facility were at or below Ippm. The OSHA (workplace) Permissible Exposure Limit Is 60 ppm. The Federal Government’s Public Building Service recommends a limit of 9 ppm in "non-lndustriar areas, Including general offices and day care centers. Therefore, the facility is acceptable.

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