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 AIH.A Lab Code: 100273 Date Received; 9/28/01 Lebanon, NJ 03833 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 /LOCA TION COLOR DETECTED? ASBESTOS CONSTITUENTS COLLECTED LAB#

CLIENT'S SAMPLE #

5009 5th Floor/ South East/ South East Window/ GRAY/ NO 0% CELL 15% 9/28/01 Sample of Debris WHITE FBGL 5% 11045 NFIB 80%

5-009

^NSUFFICIENT MATERIAL SUBMITTED **TEM RECOMMENDED “NOT ANALYZED POSITIVE STOP

Sample Analysis fay: 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 AAaIvsis: 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 = Anthophylilo 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 Steieomicroscope, Model VMZ 1x-4x. Tjuiam 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 writto 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 Io 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 semirquantitative 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 propertiessimilar 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.

Page 3 of 3

CITY_21MC100_002821039

NYC-WTC_000182388