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

REPORT DATE: 08-12-02

Taylor Environmental Group, Inc. I CLIENT:

PROJECT NAME: SCA/Stuyvesant IBS 345 Chambers Street, NY

I PROJECT NUMBER: M477-15217-29981

I SAMPLED BY: Client

SAMPLE DATE: 08-09-02 DATE RECEIVED: 08-09-02

I DATE ANALYZED:

SAMPLE MEDL%: 08-09-02

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

ANALYSIS RESULTS C SAMPLE BATCH SAMPLE DESCRIPTION LEAD CONCENTRATION DETECTION LIMIT ID NO. (µgtft2) (µg/ )

I <9.0 9.0 LW-01 21040 Rm 925A Shelf Right Side of the Entrance

I LW-02 21040 Rm 925A Floor by the Sink <9.0

<9.0µg 9.0

9.0µg FB-I 21040 Field Blank

Li FB-2 21040 Field Blank <9.0 µg 9.0 µg

NOTE 1: THE REPORTING U?vI1T (RL) IS 18.0 µg I NOTE ` window sills 250 I4UD Guidelines for final clearance dust wipe samples: Floor 40 µg1R', Window wells 400 µgift`. Exterior surfaces S00 µg/ftr. NOTE 3: I Blank units are in lrg

' CFRTIF CATION AND SIGNATURES

ANALYSIS PERFORMED BY: ~

REPORT PREPARED BY: analysis. authentic report of results obtained from the laboratory ATC certifies that this report is an accurate and

QUALITY ASSURANCE COORDINATOR:

LABORATORY DIRECTOR Approval Progarn (ELAP) and M' the American Deparmtmt of Health Envirvntacntni Laboratory I ATC is accredited by tin New York State samples. (ELAP R10879). (AAA #100229). analysis of lead in paint. dust wipes. air and soil Industrial Hygicne Association (.AIHA) to perform

1 NYC-WTC 000106502