JLC Environmental PLM lab report summary, Sep 2001

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.: 01-2102 Metcalf & Eddy Inc. ELAP Lab Code- 11029 Analyte: ASBESTOS 3 Werner Way, Suite 310 NIOSH and AIHA. Lab Cock?: 100273 Date Received: 9/28/01 Lebanon, NJ 08833 NVLAP Lab Code 101953 Date Analyzed: 9/29/01 SUMMARY OF ANALYTICAL RESULTS - PLM Batch #: 0109B385

Site: 3 World Financial Center - Floors 3-26

SAMPLE # ASBESTOS TOTAL % OF coNSTITUFNTS DATE DESCRIPTION /LOCA TION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED LABH CLIENT S SAMPLE It

5005 5th Floor/ South East/ North East Side/ GRAY/ NO 0% CELL 10% 9/28/01 Sample of Debris WHITE FBGL 5% 11041 SYNF 5% NFIB 80% 5-005 5006 5th Floor/ South East/ South East Window/ GRAY NO 0% CELL 15% 9/28/01 Sample of Debris FBGL 20% 11042 NFIB 65%

5-006 5007 Sth Floor/ South East/ South East Window/ GRAY/ NO 0% FBGL 20% 9/28/01 Sample of Debris WHITE CELL 10% 11043 NFIB 70%

5-007 5008 Sth Floor/ South East/ South East Window/ GRAY/ NO 0% FBGL 10% 9/28/01 Sample of Debris WHITE CELL 10% 11044 NFIB 80%

5-008 INSUFFICIENT MATERIAL SUBMITTED **TEM RECOMMENDED ANALYZED POSITIVE STOP

Sample Analysis by: ASBESTOS CONSTITUENTS NON-ASBESTOS CONSTITUENTS

Polarized Light Microscopy-Dispersion Staining <PLM-DS) CHRY = Chrysotile Asbestos PAPF = Paper Fiber AMOS = Amosite Asbestos MINW = Mineral Wool CROC = CrocidoIHe Asbestos FBGL = Fiberglass Method of Sample Preparation and Analysis: ACTN = Actinolite Asbestos SYNF = Synthetic Fibers All samples were prepared and analyzed in accordance with the EPA TREM = Tremolite Asbestos CELL = Cellulose "Method for the. Detemnination of Asbestos in Bulk Building Materials" ANTH = Anthophylite Asbestos NFIB = Non-Ftbrous USEPA/ 600/ R-93/116, July 1993. ORGM = Organic Material WOLL = Wollastonite Instrumentation: HSHR = Horse Hair OTHR = Other Olytnpus PLM, Model BH-2/VM Slereomicroscope, Model VMZ 1x-4x. Gulam Machhiwala Laboratory Director

.Analytical results reflect the makeup of the materials only in the areas sampled. This "Summary of Analytical Results' shall not be reproduced except in full, without the wrilte approval of JLC Laboratory, and it must not be used by client to claim product endorsement by NVLAP or any agency of the U .S. Government. This method is not applicable to samples containing large amounts of fine fibers below the resolution of the light microscope. The value of this method is limited to the quantitative identification of asbestos and the semi-quantitative determination of asbestos content of bulk samples, expressed as a percentage of the protected area. Quantitation of asbestos content was determined with a visual volume estimate, a calibrated visual area estimate, and/or point counting procedure. CAUTION: Other fibers with'optical properties similar to asbesto may give positive interferences and will be considered asbestos under this methodology. Also, PLM is nol consistently reliable in delecting asbestos in floor coverings and similar non-friable organically-bound materials. Quantitative transmission electron microscopy is currently the only method that can be used to determine if this material can b ■ considered or treated as non-asbestos containing.

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