NYC-WTC_000208691

NYC 9/11 Public Portal Document

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, NewYork 10003 Phone: (212) 420-8119 Fax: (212) 420-6092 Project No.: 01-2102 Metcalf 8 Eddy Inc. ELAP Lab Code: 11029 Analyte; ASBESTOS 3 Werner Way, Suite 310 NIOSH 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 It: 0109B385

Site: 3 World Financial Center - Floors 3-26

SAMPLE # ASBESTOS TOTAL % OF CONSTITUENTS DATE DESCRIPnON/LOCA TION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED

LAB#

CLIENT'S SAMPLE#

9001 9th Floor/ South East/ East - South Side/ GRAY NO 0% CELL 5% 9/28/01 Sample of Debris FBGL 20% 10997 NFIB 75%

9-001 9002 9th Floor/ South East/ East - South Side/ GRAY NO 0% FBGL. 30% 9/28/01 Sample of Debris NFIB 70% 10998

9-002 9003 9th Floor/ South East/ East - South Side/ BROWN NO 0% CELL 35% 9/28/01 Sample of Debris NFIB 65% 10999 9-003 9004 9th Floor/ South East/ East - South Side/ GRAY NO 0% CELL 5% 9/28/01 Sample of Debris FBGL 20% 11000 NFIB 75%

9-004 *INSUFFICIENT MATEFtlAL SUBMITTED **TEM RECOMMENDED ***NOT ANALYZED POSITIVE STOP

ASBESTOS CONSTITUENTS NON-ASBESTOS CONSTITUENTS Sample AnaivsisbY; Polarized Light Microscopy-Dispersion Staining (PLM-DS) CHRY = Chrysotile Asbestos PAPF = Paper Fiber AMOS = Amosite Asbestos MINW = Mineral Wool CROC = Crocidolite Asbestos FB6L = 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 "MethcxI for the Determination of Asbestos in Bulk Building Materials" ANTH = Anthophylite Asbestos NRB= Non-Fibrous USEPA/ 600/ R-93/116, July 1993. ORGM = Organic Material WOLL = Wollastonite tnstrumentalion: HSHR = Horse Hair OTHR = Other Olympus PLM, Model BH-2A/M Stereomicroscope, Model VMZ 1x-4x. Gularh 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 in full, without the writte approval of JLC Laboratory, and it must not be used by client fo claim product endorsement by NVLAP or any agency of the U.S. Government. This method is not applicable to samples containing targe amounts of Une fibers below the resolution of the light microscope. The value of this metiKxl 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 Io asbesta 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-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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NYC-WTC_000208691