Air quality test reports cover letter, Jan 2002

NYC-WTC_000105087 ENVIROSCI CONSULTAN 2150 SMITHTOWN RONKONKOMA, NEW YO! PHONE: (63 1) 580-3 FACSIMILE: (63 WWW.ENVIROHEALTH ELAP # NVLAP #20053 AVENUE 580-3195 IENCE TEM AIR SAMPLE RESULTS CLIENT: NTS, INC. RK 11779 191 AREA: .ORG CLIENT #: 01-10445 PROJECT NAME: SIAC Computer Room American Stock Exchange SAMPLE DATE: RECEIVED DATE: SAMPLER: CUSTODY #: December 3, 2001 December 6, 2001 Ambient L. Savarese B-14-02 10 Sample # Sample Location Start Run Time Fiow Rate Volume Filter Conc. Sensitivity Air Conc. minutes Avg. Liters S/mm2 Sicc Sicc TEM Al L1 workshop 8:55 9:15 1460 2.14 3066 0.0 0.0016 <Sensitivity TEM A2 | L2 fax/computer rack 9:22 9:18 1436 3.15 4451 0.0 0.0011 <Sensitivity TEM A3 L3 desk/console 9:50 9:20 1410 7.35 10293 0.0 0.0005 <Sensitivity TEM A4 |L4 ACI 10:10 10:20 1460 2.5 3066 0.0 0.0016 <Sensitivity Analyzed by: Lee Qk Ane Samples were analyzed us Diffraction (SAED), and E) Concentration on the s the ‘effective filter area (EFA) by The data pertaining to these The air filter concentration accwracy of the filter concentration endorsement of products by The samples collected in the resp action is considered complete acc A result of zero structures per square Date Analyzed: 72¢°0/ S=Asbestos structures,cc=cubic centimeters, mm=millimeter <= less than, Flow Rate in liters per minute ps 400T Transmission Electron Microscope. Asbestos identification is determined by the morphology, visual Selected Area Electron using an Energy Dispersive X-ray Analyzer (EDAX). by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying the filter concentration and then dividing by the volume of air collected in cubic centimeters (cc). calculations can be found on the Asbestos Count Sheet. elates only to air fiber content. When samples are submitted by an outside agency for analysis, Enviroscience. can only guarantee the . This report may not be reproduced without the express permission of Enviroscience. This report can not be used to claim NVLAP or any agency of the U.S. Government. ionse action area demonstrated a filter concentration of asbestos less than seventy structures per square millimeter. This response ording to EPA 40 CFR 763. millimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. NYC 9/11 Public Portal Document