Air quality test reports cover letter, Jan 2002

NYC-WTC_000105127 ENVIROSCIENCE CONSU 50 SMITHTOWN AVENUE: RONKON! PHONE: (631) 5803191 CSIMILE: (63 1) 580-3195 WWW. ENVIROHEALTH.ORG TEM AIR SAMPLE RESULTS 7 : eo LTANTS, INC, (U2" PROJECT NAME: KOMA, New York 11779 AREA: CLIENT #: LAP # 11681 LAP #20053 1-0 verre nes rere re om Tech Clean AMEX 22 Thames Sth Floor 00-10233 SAMPLE DATE: RECEIVED DATE: SAMPLER: CUSTODY #: September 24, 2001 September 25, 2001 Ambient B. Gallagher B-08-05 j Sample #e Sample Location _ Run Time! Flow Rate! Vohune Filter Conc. Sensitivity Air Conc. Avg. | Liters Simm2 Slice terete Rania Sy TEM A28 . Elevator lobby 24:23 om 507 TEM 429: Hall by ro ): Hall by room 520 TEM A31 .Room 514 24:25 2424 oe 195 | BS 16s | 0.0 0.0029 Séec <Sensitivity 1666 0.0. <Seusitivity 196 | BS 1666 0.0 Qutside room S11 f 21:26 + 00:42 1066 0.0 0.0029 a.0029 <Sensitivity | 6.0029 <Sensitivity wa f 24:28 | 00:42 {~- ot a oe 21:30 { 00:41. @.0037 <Seasitivity i 191 7 BR 1 840 pent a a cae etree ee een ete in 0.0036 _<Sensitivity ee a Sanples were analyzed Diffraction (SAED), Analyzed by: LC Sette "Date Analyzed: FPRIOf using Philips 400T Transmission Electron Microscope. Asbestos identification is determined by the morphology, visual Selected Area Electron and Elemental Analysis using an Energy Dispersive X-ray Analyzer (EDAX). S=Asbestos structures,co=cubic centimeters, mm=millimeter <= less than, Flow Rate in fiters per minute Concentration on the filter is calculated by taking the number of asbestos structures and dividing by the arca analyzed. Aix concentration is calculated by multiplying the effective filter area (EFA) by the filter concentration aud then dividing by the volume of sir collected in cubic centimeters (cc). The data pertaining to these calculations can he found oa the Asbestas Count Sheet. The ais filter concentration relates only to air fiber content. When samples are submitted by an outside agency for attalysis, Enviroscience. can only guarantee the accuracy of the filter concentration, This report may not be reproduced without the express permission of Envirosclence. This report can not be used to claim endorsement of pr The samples collected action is considered complete according to EPA 40 CFR 76 A tesalt of zero structure: oducts by NVLAP or any agency of the U.S, Government. in the response action area demonstrated a filter concentration of asbestos less than seventy structures per square millimeter. This response 3. Ss per square millimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. 89/28; se = 2281 16:14 6315883195 ENV IROSCIERCECNSL TAN PAGE 17 NYC 9/11 Public Portal Document