345 Chambers Street air test results and chain of custody,

NYC 9/11 Public Portal Document

3j( A~SOC1A1 , 5, INC 104 E 25th Street, 10th Floor New York, NY 10010 TeI.212-353-8280 Fax 212-353-8306

REPORT DATE: 07-31-02 I CLIENT: Taylor Environmental Group, Inc.

I PROJECT NAME: SCA/Stuyvesant HS 345 Chambers Street, NY

I PROJECT NUMBER M477-I5217/29381

SAMPLED BY: Client

SAMPLE DATE: 07-30-02 DATE RECEIVED: 07-30-02 DATE ANALYZED: 07-30-02

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

I ___

ANATXSIS RESULTS

I SAMPLE ID BATCH NO. SAMPLE DESCRIPTION LEAD CONCENTRATION DETECTION LIMIT ( gds)

I (µP/c)

LW-01 20786 Rm 1009 Floor W7 3-1 <9.0 9.0

FBL-1 20786 Field Blank <9.0 µg 9.0 µg FBL-2 20786 Field Blank <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 satoplcs: Floor 40 µg.'11', Window sills 2-40 µ,P,/11.2, Window wills 400 µg/W. Exterior swEstes 800 Ftgffr2. NOTE 3: Blank units are in µg

Li CE FICATION AND SIGNATURES rt

I ANALYSIS PERFORMED BY:

I REPORT PREPARED BY:

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

I QUALITY ASSURANCE COORDINATOR: nl~✓li''~

' LABORATORY DIRECTOR

ATC is accredited by the New York State Department of Health Environmental Laboratory Approval Program (ELM') and by the American Industrial Hygiene Associanon (AIHA) m perform analysis of Iced in paint, dust wipes, air and soil samples. (ELAP #10879), (AIHA 1i100229).

NYC-WTC 000106483