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 Metcalfs Eddy Inc. ELAP Lab Code: 11029 Analyte; ASBESTOS 3 Werner Way, Suite 310 NIOSH and AIHA Lab Code: 100273 Date Received: 9/28/01 Letsanon, 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

SAMPLE # ASBESTOS TOTAL % OF CONSTITUENTS DATE DESCRIPTION /LOCATION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED

LABH

CLIENrS SAMPLE #

5001 5th Floor/ South East/ North East Side/ GRAY/ NO 0% CELL 15% 9/28/01 Sample of Debris WHITE FBGL 10% 11037 NFIB 75% 5-001 5002 5th Floor/ South East/ North East Side/ GRAY/ NO 0% , CELL 20% 9/28/01 Sample of Debris WHITE FBGL 5% 11038 NFIB 75%

5-002 5003 5th Floor/ South East/ North East Side/ BEIGE NO 0% CELL 5% 9/28/01 Sample of Debris FBGL 25% 11039 NFIB 70%

5-003 5004 5th Floor/ South East/ North East Side/ BROWN/ NO 0% CELL 10% 9/28/01 Sample of Debris WHITE NFIB 90% 11040 5-004

nNSUFFICIENT MATERIAL SUBMITTED **TEM RECOMMENDED —NOT 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 = 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 = Tremolite Asbestos CELL = Cellulose "Method for the Determination of Asbestos in Bulk Building Materials' ANTH = Anthophyl'ite Asbestos NFIB = Non-Fibrous USEPA/ 600/ R-93/116, July 1993. ORGM = Organic Material WOLL = Wollastonile Instrumentation: HSHR = Horse Hair aaV t^K >.L, v» -«* 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 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 fight microscope. The value of this method is limited to the quantitative identiTication 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 simitar 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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