Air quality test reports cover letter, Jan 2002

NYC-WTC_000105091 ENV CONSUL RONK' ROSCIENCE 50 SROTHTOWN AVENUE ONKOMA, New Yor 11779 (ONE: (631) 5803191 AREA: FACSIMILE: (63 1) 5803195 . WWW. ENVIROQHEALTHLORG “LAP # 11681 NVLAP #20053 1-0 | Sample#| TEM AIR SAMPLE RESULTS ICLIENT: TANTS, INC. PROJECT NAME: CLIENT #: ____ Sample Location Tech Clean SAMPLE DATE: RECEIVED DATE: September 25, 2001 Ambient B. Gallagher AMEX 22 Thames 4th Floor SAMPLER: 00- 10233 CUSTODY #: September 24, 2008 — Start | End [ Run Time |Flow Rate| Volume | Filter Conc. | Sensitivity | / Air Conc. Sice TEM Ail2|Room 40 15:54 | 21:10 | 316 8.5 2646 |- 0.0 0.0018 <Sensitivity TEM Ai3|Room 417 eee TEM Al4 oom 414, baliway_ 16:00 1 21:05 | 305 8.5 2592 | 0.0 1 0.0019 <Sensitivity ee a 16:00 | 21:07 | 307 10 3070 12.63 <Sensitivity | TEM AIS Room 430 wn ec ce anunmes eve cessor wena 16:03 | 21:44] 301 85 | 2643 0.0 Sensitivity ced eR, ge | TEM Al6 | Room 425 <Sensitiyity A6:05 | 29:05 | 3084 9 | 2708) 0.0 0.0018 46:10 | 21:07 297, 8.5}. 2524 0.0 <Sensitivity TEM Al? | Outside fire see ee eed en no Analyzed by Samples were Diffraction (SAED) Conceutration on the filt the effective filter area (EF. The data pestaining to The air filter concenttat acensacy of the filter endorsement of products The samples collected in action is considered A result of zero analyzed using Philips 400T Transnugsion Electron Microscope. Asbestos identification is determined by the morphology, visual Selected Area Electrun and Elemental Analysis using an Eacrgy Dispersive X-ray Analyzer (EDAX). ec is caluulated by taking the nember of asbestos stractures and dividing by the area analyzed. Air concentration is calculated by multiplying ‘A) by the filter concentration aud then dividing by the volume of air collected in cuhic centimeters (cc). by NVLAP or any agency of the U.S, Government Date Analyzed: 20°07 S=Asbestos structures,comcubic centimeters, mm=millimeter <= less than, Flow Rate in liters pec minate these caiculations can be fouad on the Asbestos Count Sheet. ian relates only to air fiber contest. When samples ave submitted by an outside agency for analysis, Envirasclence. can only guarantee the oncentration. This repast may not be reproduced without the express permission of Envixosclence, This report cam not be used to claim the response action acea deruogstrated a filter concentration of asbestos less than seventy structures per square millimeter. This respanse complete accordiag to EPA 40 CFR 763. stroctures per square millimeter is only applicable to the area analyzed. Test results only reflect conditious at the time samples were taken, 89/26/2881 18:14 6315883195 ENVTROSCIENCECNSLTAN PAGE 16 y NYC 9/11 Public Portal Document