Air quality test reports cover letter, Jan 2002

NYC-WTC_000105090 ENVIROSCIENCE __‘TEM AIR SAMPLE RESULTS CONSUL FACSIMi i Sample#) jin. SO SMITHTOWN AVENUE RONKONKOMA, NEW YorRK 1 17779 Arabient PHONE: (63 1) 580-3191 "eo : sy. Le: (631) 5803195 AREA; Thied Floor SAMPLER: B. Gallagher WWW.ENVIROHEALTH.ORG aad + 00-10233 CUSTODY #- B-05-03 ELAP# 11681 NVLAP #20053 0 ee i TEM A18!By elevate Cunt. Tech Clean —— SAMPLE DATE: September 24, 2001 TANTS, INC. PROJECT NAME: AMEX 22 Thatnes RECEIVED DATE: September 25, 2001 _ Sample Location Start | End | Run Time; Flow Ratel Volume | Filter Conc.| Sensitivity! Alr Conc. _| oe ee _ minutes Avg. Liters S/am2 Sec Sic _ | oT 16:35 119-20} 165 7 1155 0.0 0.0042_| <Sensitiviry 6318883195 TEM A20|Section 3, C/S 9 ee ee 16:40 | 20:44 | 244 8 | 1952 a0 0.0025 _| <Sensitivity | 16:37 | 20:40} 243 2187 0.0 0.0022_| <Sensitivity oy TEM _A21 | Computer room doce emt en 37:05 | 20:A? 172, 8.5 1462 0.0 0.0033__ | <Sensitivity . TEM A222! Spear S01 _ Bs a wae en oe . 4 20:50; 145. | - 10 1460 0.0 ___| 0.0034 | Sensitivity | i 2 ! | 1 somes a ot —---—-— Analyzed by: Ch MM LG: Pe OO? S=Ashestos structures,cc=cubic centimeters, mmensillimeter : Date Analyzed: PLS <= fess than, Flow Rave in liters per minute Samples were analyzed using Philips 400T Transmission Electron Microsoope. Asbestos identification is detennined by the morphology, visual Selected Area Electron Diffraction (SAED), and E Concentration on the filter tementat Analysis using an Energy Dispersive X-ray Analyzet (EDAX). is calculated by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by omltiplying the effective filter evea (EFA) by the filter concenteation and then dividing by the volume of air collected in cubic contimeters (cc). The data pertaining to ch The ait filter concentr: accuracy of the filter endorsement of pr: ‘The samples ovllected in action 1s considered con! A result of sero stmct ese calcutatians can be found on the Ashestos Count Sheat. ation relates only to air fiber content, When samples are submitted by an outside agency for analysis, Enviroscience. can only guarantee the conoentration. This ceport may nat be reproduced without the express permission of Enviroscience. This report can not de used to claim ofnucts by NYVLAP ot any agency of the U.S. Govecnment. the response action aren demonstrated a filter concentration of asbestos less than seventy structures per square millimeter. This response fete according to EPA 40 CFR 763. ures por square millimeter is only applicable to the arca analyzed. Test results undy reflect conditions at the time samples were taken. Q3/28/28@1 10:14 TROSCIENCECNSL TAN PAGE 15 NYC 9/11 Public Portal Document