345 Chambers Street air test results and chain of custody,

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC I 104 E 25th Street, 10th Floor New York, NY 10010 Tel. 212-353-8280 Fax 212-353-8306

I REPORT DATE: 08-01-02

7 CLIENT:

PROJECT NAME: Taylor Enviroruncntal Group, Inc.

SCA/Stuyvesant HS 345 Chambers Street, NY

I PROJECT NUMBER M477-15217/29881

I SAMPLED BY:

SAMPLE DATE: Client

08-01-02 DATE RECEIVED: OS-01-02

I DATE ANALYZED:

SAMPLE MEDIA: 08-01-02

Dust Wipe Sample

1 ANALYSIS REQUIRED: Method EPA 30501/420

ANALYSIS RESULTS I SAMPLE BATCH SAMPLE DESCRIPTION LEAD CONCENTRATION DETECTION LIMIT ID NO.

I (11g/f) (lag/ )

W-01 20833 Rm 911 Ceiling Unitveat Air Dumper <9.0 9.0

I F/B-01 20833 Field Blank <9.0 µg 9.0 ag

FIB-02 20833 Field Blank <9.0 µg 9.0 µg

I NOTE 1: THE REPORTING LIMIT (RL) IS 13.0 µg

I NOTE 2: HUD Guidelines for final clearance dun wipe sampler Floor 40 µgi l=, endow sills 250 µg/ft', Window wells 400 µg/ftr, Exterior surface: 800 µgat. NOTE 3:

I Blank units are in µg

CERTIFICATION AND-SLG_NATURES

I <—, ANALYSIS PERFORMED BY:_______ I

I REPORT PREPARED BY: - ~ analysis. ,ETC ccrtific, that this report is an accurate and authentic report of results obtained from the laboratory

I QUALITY ASSURANCE COORDINATOR:

LABORATORY DIRECTOR (ELAP) and by the American ATC is accredited by the New York State Department of Health Environmental Laboratory Approval Program ndustrial Hygiene Association (AI}L&) to perform analysis of lead in paint, dust wipes, air and soil samples. (EL.4P a l0$79), (AIHA #100229). 1

NYC-WTC 000106751