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_000094526

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

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NYC-WTC_000094526 ENVIROSCIENCE TEM AIR SAMPLE RESULTS CONSULT ‘ANTS, INC. CLIENT: Tech Clean SAMPLE DATE: September 24, 2001 50 SMITHTOWN AVENUE: PROJECT NAME: AMEX 22 Themes RECEIVED DATE: September 25, 2001 RONKONKOMA, NEW YORK 11779 Ambient PHONE: (631) 580319 1 . oR. CSIMILE: (63 1)5803198 AREA: Sth Floor SAMPLER: B. Gallagher WWW. ENVIROHEALTH.ORG CLIENT #: 00- 10233 CUSTODY #: B-06-05 ELAP # 11681 LAP 420053 1-0 eee ee _. ae J piste eeee a eee 7 ~ : ' i Sample # ae — Sample Location Sart | End | Run Time i Flow Rate) Volume | Kilter Conc.| Sensitivity! Air Conc. i : minutes | Avg. | Liters Sfmm2 Slee} Skee | 24:23; 00:47! 19S) | BS 1658 | 0.0 0.0029 | <Sensitivity A224 | 00401 196 8.5 1666 9.0 TEM A29 Halt by room 507 TEM A30: Hall by room 520, i 2125: 00-41; 196 | 85 | 1666 0.0 | 9.0029 | <Sensitivity £2126! 0042! 196 | 8.5 | 1666 0.0 0.0029! <Sensitivity aR | on 0.0037 _| <Sensitivity 0.0 | 0.0036 _| <Sensitivity .0029__ | <Sensitivicy TEM A31 Room 5}4 es TEM A32'Fan roont 509 _- £24:28 | 00:42 jon dt os | TEM A33 | Outside room $11 29:30 | 00:4) | 191 % 4 3937 = wees ee cee ee ee ee Se ce eg penetra } i : fee eee Le chine tee eee = ee ef eee ep ee t | ti tes ce pe oe oe t | = i : Seay Se | i ce ed ce ene ee ernnenen enn tate eee ¢ ( ee red ee hee tt the ee ee ee hee eee ee HL pee a - / — S=-Asbestos structures.co=cubic centimeters, me=nillimeter Analyzed by: Lt hi et Date Analyzed: “ RFO/ <= less than, Flow Rate in fiters per minute Saunples were analyzed using Philips 400T Transmission Bloctroa Microscope. Asbestos Identification is determined by the morphology, visual Selected Area Hlectron Diffraction (SAED), and Elemental Analysis using an Energy Dispersive X-ray Analyzer (EDAX). Concentration on the filter is calculated by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying the effective filter area (EFA) by the filter concentration aad then dividing by the volume of ic collected in cubic centimeters (cc). The data pertaining to these calculations can he found on the Asbestos Count Sheet. The air filter concentration relates only to air fiber content. When samples are submitted by an outside agency for analysis, Enviroscience. cam oaly guarantee the accuracy Of the filter concentration. This report may not be reproduced without the express permission of Envirosclence. This report can not de used to claim endorsement of products by NVLAP or any agency of the U.S, Goveznment. The sampies collected in the response action area demonstrated a filter concentration of asbestos less than seventy structutes per square millimeter. This response action is considered complete according to EPA 40 CFR 763. A result of zero structures per square millimeter is only applicable to the arca analyzed. Test results only reflect conditions at the time saraples were taken. NYC 9/11 Public Portal Document 89/26/2221 18:14 63158@3195 ENVIRGSCIENCECNSL Tah PAGE 17

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NYC-WTC_000094526Source: NYC Law Department, mirrored locally

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Asbestos TEM air sample results, 86 Trinity Place, Sep 2001 · Box DEP Box 02

NYC-WTC_000094525

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

2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.961