NYC-WTC_000202411

NYC 9/11 Public Portal Document

Scope of Work

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

• 5™Floor Hall by Stair B • Room 502 Window Sill • Room 508 • 4“’ Floor Hall by Room 410 • Room 409 Window Sill • Room410 • 3"" Floor Hall by Stairs Floor • Room 312 Window Sill • Room 311 • 2"“’Floor Hall by room 210 • Room 210 Window Sill • Room 206 S • U‘Floor Playroom • Main Desk Floor • U Floor Hall by Cafeteria • Cafeteria • Main Lobby - Floor • Auditorium

The purpose of the dust wipe sampling is to determine if dust in the school contains lead. ATC’s representative Mr. Jimmy Choy visited P.S. 130 M located at 143 Baxter Street Street, New York, NY on August 24, 2002. Dust wipes to be analyzed for lead content were collected from the aforementioned areas indicated by the New York City Board of Education Environmental Health & Safety Unit and in accordance with HUD protocols.

LEAD-IN-D UST SAMPLING

Lead-in-dust threshold levels The New York City Health Code, part 173.14 and the Federal Departments of 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 Windowsills: 250 pg/ft^ For Floors: 40 pg/tf

P.S.J30M August 27, 2002 AKSOCIATES INC .

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