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 I Fax 212-353-8306

I REPORT DATE: 07-29-02

CLIENT: Taylor Environmental Group, Inc. 1 PROJECT NAi1IE: SCA/Stuyvesant HS 345 Chambers Street, NY

I PROJECT NUMBER M477-1521729881

SAMPLED BY: Client

SAMPLE DATE: 07-27-02 DATE RECEIVED: 07-28-02 DATE ANALYZED: 07-28-02

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

I SAMPLE ID BATCH NO. SAMPLE DESCRIPTION LEAD CONCENTRATION DETECTION LIMIT (lig/ft2) (µjft2)

I 20714 Rm 925 Ceiling Unitvent Exhaust Duct <9.0 9.0 LWD-01

1 FBL-1

FBL-2 20714

20714 Field Blank

Field Blank <9.0 µg

<9.0 µg 9.0 µg

9.0 µg

I NOTE 1: THE REPORTING LIMIT (RL) IS 18.0 µg NOTE 2:

I HUD Guidelines for final clearance dust wipe samples: Floor 40 µg/ft', Window sills 250 µg/ft', Window wells 400 µg'ft', Exterior surfaces 800 /ft. NOTE 3: Blank units are in }tg

I CERTIFICATION AND.SLGflLEES

I ANALYSIS PERFORMED BY:

REPORT PREPARED BY:

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

QUALITY ASSURANCE COORDINATOR

LABORATORY DIRECTOR: Program (ELAP) and by the American ATC it accredited by the New York State Department of Health Environmental Laboratory Approval (ELAF #10879), (AIHA #100229). Industrial Hygiene Msocianon (AIHA) to perform analysis of lead in paint, dust wipes, air and soil samples.

NYC-WTC 000106712