NYC-WTC_000211835

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 and as specified in the sampling protocol for the school. These areas are the following;

• 1“ floor lobby • Cafeteria • Two random classrooms • Auditorium • 3"* floor hallway • 5* floor hallway • T® floor hallway • 9* floor hallway • 13'’’floor hallway

The purposed of the dust wipe sampling,is to determine if dust in the school contains lead. ATC will be repeating this sampling every Thursday as per the recommendation of NYC-BOE. This is 12'*' consecutive week that dust samples were collected from High School for Leadership & Public Service (M894) to be analyzed for lead content.

ATC’s representative Mr. Yiannis Efstathiou visited High School for Leadership & . Public Service (M894) located at 90 Trinity Place, New York, NY 10006 on April 25”’, 2002. Dust wipes to be analyzed for lead content were collected from the aforementioned areas indicated to ATC by the New York City Board 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 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 gg/tf For Floors: 40 |ig/tf

Although the lead-in-dust samples collected at High School for Leadership & Public Service (M894) were not collected in response to lead abatement, the same thresholds are used since no other regulations or standards are applicable to this project.

High Schoolfor Leadership & Public Service (AfSQd) <Sw<; April 26, 2002

CITy_21MC100_002865521

NYC-WTC_000211836