NYC-WTC_000202542

NYC 9/11 Public Portal Document

Scope of Work

I ATC Associates, Inc. (ATC) was retained by New York City Department of Education J (NYC-DOE) to collect dust wipes to be analyzed for lead content. Dust wipe samples i were collected from areas recommended by the NYC- DOE. These areas are the following;

• 3^“* Floor Hallway • 2"^ Floor Hallway . U‘Floor Hallway ' • U'Floor Lobby • Cafeteria • Auditorium • Two random Glassrooms

The purpose of the dust wipe sampling is to determine if dust in the school contains lead. ATC’s representative Mr. Mark Nakliumovich visited P.S. 12'4M located at 40 Division Street, New York, NY’ on September 10, 2002. Dust wipes to be analyzed for lead content were collected from the aforementioned areas indicated by the New Y^ork City Department of Education Environmental Health & Safety Unit and in accordance with HUD protocols.

LEAD-IN-DUST SAMPLING

Lead-in-dust threshold levels The New York City Health Code, part 173.14 and the Federal Departments o f Housing and Urban Development (HUD) and Environmental Protection Agency (EPA) have established acceptable lead-in-dust levels for re-occupancy after a lead abatement has occurred (commonly referred to as “final clearance” levels). As stated in the Code, final clearance after abatement has taken place is achieved when dust wipe samples indicate-lead levels below those listed below;

For Window sills; .250pg/ft- For Floors; 40 pg/ft’

Although the lead-in-dust samples collected at P.S. 124M were not collected in response to lead abatement, the same thresholds are used since no other regulations or standards are applicable to this project.

Sampling Methodology ATC provided all laboratory analytical sefvices in support of this limited inspection. ATC is certified by the New York State Department of Health’s Environmental Laboratory Accreditation Program to perform lead and related analyses of environmental samples (Laboratory ID Number; 10879). The laboratory utilizes the United States Environmental P.S. 124M (Wc September 11, 2002

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NYC-WTC_000202543