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← Document results/DEP Box 02/86 TRINITY PLACE Block: 51 Lot: 13
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Asbestos TEM air sample results, 86 Trinity Place, Sep 2001

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Laboratory report showing transmission electron microscopy results for asbestos in air samples from September 24, 2001.

NYC-WTC_000094502

Folder label: “86 TRINITY PLACE Block: 51 Lot: 13

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NYC-WTC_000094502 ENVIROSCIENCE CONSU LTANTS, INC. 2150 SMITHTOWN AVENUE ONKONKOMA, NEW YORK 1 17°79 PHONE: (63 1) 580-3191 FACSIMILE: (631) 5803195 YWWW.ENVIROHEALTH.ORG TEM AIR SAMPLE RESULTS AREA: CLIENT #: EL AP# 11681 NVLAP #20053 1-0 ; ti i qT : Ai i By elevator t I 1 4 =< Section 3, C/S 9 Computer room _ Sample Location i PROJECT NAME: Tech Clean AMEX 22 Thatnes Third Floor 00-10233 SAMPLE DATE: September 24, 2001 RECEIVED DATE: September 25, 2001 Ambient SAMPLER: B. Gallagher CUSTODY #: B-05-03 — Volume | Filter Cone. | Sic Liters S/mm2 Sensitivity | Air Conc. 20:47 155 0.0 0.0042 <Sensitivity 6316883195 2487 9.0 0.0022 <Sensitivity 1952 0.0 0.0025 Sensitivity 1462 0.0 9.0033 <Sensitivity 20;50 ~T i | | re re ee a 0.0 0.0034 SNES ow rech = EM 1460 ant | Sensitivity | | i eo i ; j 1 4 | t i | a a ateiarees (ate fe mee ene [ | Li | | | Analyzed by: Samples were analyzed Diffraction (SAED Concentration on the filter The data pertaining to th The ait filter concentration relates only to air fiber content. When s accuracy of the filter concentration. This report may nat be repr products by NVI_AP or any agency of the U.S. Government endorsement of the effective filter srea (RFA) by the filter concentration and then dividing by ese calculations can be found on the Ashestos Count Sheet. amples are submitted by an outside agency for analysis, foduced without the express peemission of Enviroscience. ‘Thi Date Analyzed: PLEO? using Philips 400T Transmission Electcon Microscope. Asbestos identificatio }, and Elemental Analysis using an Energy Dispersive X-ray Analyzet (EDAX). is calculated by taking the number uf asbestos structures and dividing by the area analyzed. Air concentration is calculated by omltiplying the volume of air collected in cubic centimeters (cc). S= ‘fhe samples collected in che response action area demonstrated a filter concentration of asbesius less than seventy structures pet A result of xero action 1s considered coniplete according to BPA 40 CFR 763. Structures pir square millimeter is only applicable co the aca anulyzed. Test shestos structures,ce=cubic centimeters, mm=milfimeter <= less than, Flow Rate in liters per minute n is detennined by the morphology, visual Selected Area Electron Paviroscience. can only guarentee the is report Can not be used to claim syume millimeter. This response results uly reflect conditions at the time samples were taken. -—nd 83/28/20@i 10:14 ENVIROSCIENCECMSL TAN PAGE 15 NYC 9/11 Public Portal Document

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NYC-WTC_000094502Source: NYC Law Department, mirrored locally

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