345 Chambers Street air test results and chain of custody,

NYC 9/11 Public Portal Document

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

I REPORT DATE:

CLIENT: .08-05-02

Taylor Environmental Group, Inc.

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

PROJECT NUMBER: M477-15217/29881

SAMPLED BY: Client

I SAMPLE DATE: DATE RECEIVED: 08-02-02 08-02-02 DATE ANALYZED: 08-02-02

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

I --

,ANALYSTS RESULTS -

I SAMPLE ID BATCH NO. SAMPLE DESCRIPTION LEAD CONCENTRATION (gift) DETECTION LIMIT (Ftg/fr')

I DW-01 20871 Rm 501A Ceiling Ur itvent Air Damper <9.0 9.0 <9.0 9.0 I DW-02

DW-03 20871 20871 Rm 231 Left Unitvent Back Wall Rm 231 Right Unitvcnt Back Wall <9.0 9.0

<9.0 µg 9.0 µg

I DW-04

DW-05 20871 20871 Field Blank Field Blank: <9.0 µs 9.0 µg

I NOTE 1: THE REPORTING LIMIT (BL) IS 18.0 µg NOTE 2: µg/ft2, Window sills 250 µgtW. HUD Guidelines for final clearance dust wipe sampieS: Floor 40

I \Vindow NOTE 3: wells 400 }sg/ft=,

Blank units ate in µg Exterior sorfacrs 800 µg/ft=.

CERTIFICA'T'ION AND SIGNATURES

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

QUALITY ASSURANCE COORDINATOR:

LABORATORY DIRECTOR: n~✓1 Approval Program (FLAP) and by the American ATC is accredited by the New York State Department of Health Environmental Laboratory analysis of lead in paint, dust wipes, sir and soil samples. (ELAF -010879), (AIIiA x;100229). Industrial Hygiene Association (AIHA) to perform

NYC-WTC 000106758