NYC-WTC_000208694

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 NIO.SH and AIHA Lab Code: 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 CONSTITUENTS DATE DESCRIPTION /LOCATION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED LAB# CLIENTS SAMPLE #

11001 11th Floor/ South East/ South Conference BROWN NO 0% CELL 20% 9/28/01 Room/ Sample of Debris NFIB 80% 10977 11-001 11002 11th Floor/ South East/ South Conference GRAY NO 0% FBGL 25% 9/28/01 Room/ Sample of Debris NFIB 75% 10978 11-002 11003 11th Floor/ South East/ South Conference BROWN NO 0% CELL 15% 9Z28/01 Room/ Corridor/ Sample of Debris NFIB 85% 10979 11-003 11004 11th Floor/ South East/ South Conference WHITE NO 0% NFIB 100% 9/28/01 Room/ Corridor/ Sample of Debris 10980 11-004 ^NSUFFICIENT MATERIAL SUBMITTED **TEM RECOMMENDED ***NOT ANALYZED POSITIVE STOP

ASBESTOS CONSTITUENTS NON-ASBESTOS CONSTITUENTS Sample Analysis by: Polarized Light Microscopy-Dispersion Staining (PLM-DS) CHRY = Chrysotile Asbestos PAPF = Paper Fiber AMOS = Amosite Asbestos MINW = Mineral Wool CROC = Crocidolite 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 = Tremoiite Asbestos CELL = Cellulose 'Method for the Determination of Asbestos in Bulk Building Materials” . , ANTH = Anthophylite Asbestos NFIB = Non-Fibrous USEPA/600/R-93/116. July 1993. ORGM = Organic Material WOLL = Wollastonite Instrumentation: HSHR = Horse Hair OTHR = Other Olympus PLM, Model BH-2/VM Stereomicroscope. Model VMZ 1x-4x. Gulam Machhiwala Laboratory Director

Analytical results reflect the make up of the materials only in the areas sampled. This "Summary of. Analytical Results" shall not be reproduced except tn full, without the writte 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 appficable 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 libers with optical properties similar to asbesto may give positive interferences and will be considered asbestos under this methodology. Also, PLM is not consistently reliable in detecting asbestos in floor coverings and similar non-ftiabte organically-bound materials. Quantitative transmission electron microscopy is currently the only method that can be used Io determine if this material can b considered or treated as non-asbestos containing.

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NYC-WTC_000208694