JLC Environmental PLM lab report for World Financial Center, Sep

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 lob Code: 100273 Date Received: 9/28/01 Lebanon, NJ 08833 NVLAP Lab Code: 101953 Date Analyzed: 9/29/01 Batch #: 0109B385 SUMMARY OF ANALYTICAL RESULTS - PLM

Site; 3 World Financial Center - Floors 3-26

S)\MPLE it ASBESTOS TOTAL % OF rnutiTiri iPNT<t DATE DESCRIPTION/LOCATION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED LAB#

CLIENT'S SAMPLE #

4009 4th Floor/ South East/ Floor/ Sample of GRAY NO 0% CELL 5% Debris FBGL 20% 9/28/01 NFIB 75% 11055 4-009

•INSUFFICIENT 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 = AmosHe Asbestos MINW ° Mineral Wool CROC = Crocidolite /Asbestos FBGL = Fiberglass Method of Sample Preparation and /Xnaivsis: ACTN = Actinolite /tebestos SYNF = Synthetic Fibers /UI samples were prepared and analyzed in accordance with the EPA TREM = Tremolite /Asbestos • CELL = Cellulose "Method for the Determination of /Asbestos in Bulk Building Materials' ANTH = Anthophylile 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. '"Uulam 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 LaboralOry, 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 couriting 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 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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