Air quality test reports cover letter, Jan 2002

NYC-WTC_000105128 ENVIRO CONSULTANTS, INC. RONKQNKGMA, THTOWN AVENE, . New YORK 11779 NE; (63 1) 580.3191 LE. (631) 580-5195 WLERVIROHEALTH.ORG ELAP # 11661 AP $200531-0 SCIENCE IPROJECT NAME: AREA: CLIENT #: TEM AIR SAMPLE RESULTS [cumnt: Bech Clean AMEX 22 Thames 6th Floor 00-10233 “SAMPLE DATE: September 24, 200) RECEIVED DATE: September 25, 2001 SAMPLER: CUSTODY #: Ambient B. Gallagher 6-05-06 ace by room 623 _ Sample Location Stat Sees eens 1 mioutes | Avg. | Liters den fe End | Run Time | Flow Ratel Volume | Filter Conc.| Sensitivity | oe 133 8.5 1031 Sfmam2 ; Ske 00 | 0.0043 Airc Conc. Sécc NE gd MEM <Seasitivity aoyeane weeny 611 mane roora 609 roam 612 Analyzed by: Samples were analyzed Diffraction Concentration o the effective filte ‘the data pateising ¢ The air Miter accaracy of the filer ooncen: endorsement of products The ssmples collected in action is considered coi A cesuit of zero structure 19: 52 he TR SST pO 193), : oof EE PBN LD: 55 | 135 735 1013 0.0 0.0048 0.0 0.005 ___| <Sensitivity | 0.6 0.0042 <Sensitivity 0.0 0.0036 aL LD GOR 4 mais <Sensitivity | OO SiiwC> Dae Analyzed: & 2° using Philips 400T Transmission Electron Microscupe. Asbestus identification is determined by the morphology, visual Selected Ares Electron mene Analysis using au Enesgy Dispecsive X-ray Analyzer (EDAX). S=Asbestos structures,ceacahic centimeters, rus-roil limeter <= leas than, Flow Rate in liters per minute is calculated by taking the mumber of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying e calculations can be found on the Ashestos Count Sheet. or ‘A; by the filter concentration and then dividing by the volume of ais collected in cubic centimeters (cc). celates only to air fiber content. When samples ste submitted by an outside agency for analysis, Envirosclence. can only guarantee the tration. This reputt may not be reproduced withcot the express permission of Enviroscience. This report can not be used to claint cts by NVLAP or any agency of the U.S. Government. the response ection area demonstrated a filter concentration of asbestos less than soventy structares per square millimeter. ‘This response mplete according to FPA 40 CFR 763 $ Per square millimeter is orly applicable to the aves analyzed. Test results onty reflect conditions at the tirae samples were taken. B3/ 28/2802 1A: 14 6315383195 ENYTROSCIENCECNSLTAN Pa 18 NYC 9/11 Public Portal Document