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 Metcalfs Eddy Inc. ELAP Lab Code; 11029 Analyte; ASBESTOS 3 Werner Way, Suite 310 NIOSH and AIHA t.ab Code: 100273 Date Received: 9/28/01 Lebanon, NJ 08833 NVLAP Lab Code: 101953 Date Analyzed: 9/29/01 Batch #; 0109B38S SUMMARY OF ANALYTICAL RESULTS - PLM Site; 3 World Financial Center - Floors 3-26

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

CLIENTS SAMPLE #

4005 4th Floor/ South East/ Floor/ Sample of GRAY/ NO 0% CELL 20% 9/28/01 Debris WHITE FBGL 10% 11051 NFIB 70%

4-005 4006 4th Floor/ South East/ Floor/ Sample of GRAY NO 0% CELL 25% 9/28/01 Debris NFIB 75% 11052

4-006 4007 4th Floor/ South East/ Window/ Sample of GRAY NO 0% CELL 5% 9/28/01 Debris FBGL 25% 11053 NFIB 70%

4-007 4008 4th Floor/ South East/ Floor/ Sample of GRAY/ NO 0% CELL 15% 9/28/01 Debris WHITE FBGL 15% 11054 NFIB 70%

4-008 INSUFFICIENT 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 M1NW = 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 = Antbophylile Asbestos NFIB = Non-Fibrous USEPA/600/R-93/116, July 1993. ORGM = Organic Materiat WOLL = Wollastonite Instrumentation: HSHR = Horse Hair Olympus PLM, Model BH-2A/M Stereomicroscope, Model ^ot bLr J OTHR = Other VMZ 1x-4x. TTu’larri 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 writle approval of JLC Laboratory, and 8 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. QuantHation 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 to asbesto . ma", 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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