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: -07-22-02 I CLIENT: Taylor Environmental Group. Inc.

PROJECT NAME: SCA`Stuyvesant HS 345 Chambers Street. NY 7th Floor

PROJECT NUMBER: N1477-15217-29831

SAMPLED BY: CIient

I SAMPLE DATE DATE RECEIVED: 07-20-02 07-20-02 DATE ANALYZED: 07-20-02

I SAMPLE MEDIA: ANALYSIS REQUIRED: Dust Wipe Sample Method EPA 305017420

I ANALYSIS RESLILTS

SAMPLE DESCRIPTION LEAD DETECTION I SAMPLE ID BATCH NO CONCENTRATION (ugrft2) LIMIT (u€! )

I LW-01 20515 Room #703 East Side Unit Vent Rear <9.0

<9.0 9.0

9.0 LW-02 20515 Room #703 South Side Left Unit Vent Rear

I LW-03 20515 Room #703 South Side Right Unit Vent Rear

Field Blank <9.0

<9.0 µ; 9.0

9.0 µg FBL-1 20515

I FBL-2 20515 field Blank <9.0 ug 9.0 µg

•' NOTE 1: THE REPORTING LIMIT (RL) IS IS.O Fib NOTE 2: HUD Guidelines for final clearance dust wipe samples: Floor 40 Itgnt'. Window sills 250 Window wc11s 400 µg/it', Exterior surfaces 300 µg1tt .

I NOTE 3: Blank unit are in µg I CERTIFICATION ANT) STCNATURFS

ANALYSIS PERFORMED BY:

I REPORT PREPARED BY: Z

ATC certifies that this report is an accurate and authentic repntofre.ults obtained from the laboratory analysis.

I QUALITY ASSURANCE COORDINAT

LABORATORY DIRECTOR:

I ATC is a:.credited by the New York State Department of Health Environmental Laboratory Approval Program (ELAP) Industrial Hygiene (AIHA) perform Association to of lend in dust analysis and paint, and by the American (ELAP # 10l 79), (AIHA 4100229). wipe.

air soil samples.

I

NYC-WTC 000106667