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Dust wipe sample results summary, March 5-6, 2003

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Summary of analytical results for lead dust wipe samples from 114 Liberty Street.

NYC-WTC_000101391–000101392

Folder label: “JLC REPORTS

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NYC 9/11 Public Portal Document

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone: (212) 420-8119 Fax: (212) 420-6092 Project No.: 03-2744 New York City D.E.P. ELAP Lab Code: 11029 Analyte: LEAD/ WIPE 59-17 Junction Blvd. NIOSH and AIHA Lab Code: 100273 Date Collected 3/5/2003 Flushing, NY 11373 NVLAP Lab Code: 101953 Date Received: 3/6/2003 Date Analyzed: 3/6/2003 Batch #: 0303L328

Site: 114 Liberty Street, New York, NY

SUMMARY OF ANALYTICAL RESULTS - DUST WIPE

Sample # Description/ Location Area in Inches Lead Lab # (L x W) Concentration Client's Sample (ug/ff2)

1 12th Floor/ Lead Dust/ Floor/ Kitchen 12x12 483.0 2592 01

2 12th Floor/ Lead Dust/ Wall/ Living Room/ Upper Left 12x12 <20 2593 02

3 12th Floor/ Lead Dust/ Counter Top/ Kitchen 12x12 <20 2594 03

Sample Analysis By: Atomic Absorption Spectrometry (AAS) using an air-acetylene flame with background correction. Method of Sample Preparation and Analysis All samples were prepared and analyzed In accordance with the HUD "Guidelines for the Evaluation and Control of Lead Based Paint Hazardous in Housing" Appendix 14.2 and the Environmental Protection Agency Method EPA SW846-3050/7420.

Gulam Machhiwala Collected By: Shawn Rajkumar Laboratory Director Analyzed By: Madell Collins

Minimum Dectection Limit = <20 ug/ft2 HUD "Guidelines for the Evaluation and Control of Lead-Based Paint Hazardous In Housing" 06/95; define the clearance standards, based on wipe sampling are: *40 ug/ft2 for floors; *250 ug/ft2 for Interior window sills; "400 ugfft2 for window and exterior concrete or other rough DISCLAIMER: JLC Environmental Consultants, Inc. did not collect the analyzed samples and thus accepts no liability with regard to their collection and/or maintenance. JLC relies on the client for all sample Information prior to delivery at JLC.

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NYC-WTC 000101391

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NYC-WTC_000101391Source: NYC Law Department, mirrored locally

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