NYC-WTC_000202067

NYC 9/11 Public Portal Document

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I : ATC ASSOCIATES, INC 104.1 25th Street, 10th Floor New York, NY 10010 4 Tel. 212-353-8280 Fax 212-353-8306

REPORT DATE: 02-26-02

CLIENT: NYC BOE

PROJECT ADDRESS: P.S.89M/20] Warren St. New York, NY 10282

PROJECT NO: 41617-0562 SAMPLED BY: Y. Efstathiou

SAMPLE DATE: 02-25-02 DATE RECEIVED- 02-25-02 DATE ANALYZED: 02-25-02

SAMPLE MEDIA: Dust Wipe Sample ANALYSIS REQUIRED: Method EPA 3050/7420

ANALYSIS RESULTS

SAMPLE BATCH SAMPLE DESCRIPTION LEAD DETECTION ID NO. CONCENTRATION LIMIT (Eg/f4) Cng/ft")

01 9693 Classroom #306 Window Sill 3.1 2.7

02 9693 Blank <9.0 ng , 9-0.ng

NOTE 1: THE REPORTING LIMIT (RL) IS 18.0 pg

NOTE2: HUD Guidelines for final clearance dust wipe samples: Floor 40 pg/fE, Window sills' 250 pg'Tty Window wells 400 pg/ft’, Exterior surfaces 800 pg/fP.

■ NOTE 3 : Blank units are in pg

CERTIFICATION AND SIGNATURES

ANALYSIS PERFORMED BY:

REPORT PREPARED BY:

ATC certifies that this report is an accurate and authentic report of results_obtained from the laboratory analysis.

QUALITY ASSURANCE COORDINATOR:

LABORATORY DIRECTOR:

ATC Environmental Ine. (ATC) is accredited by the New York State Department of Health Environmental Laboratory Approval Program (NYS DOH ELAP) to perform analysis of lead in paint and du.st wipes (ELAP #10879).

CITY_21MC100_001827381 NYC-WTC_000202067