Air quality test reports cover letter, Jan 2002

NYC-WTC_000105097 EN CONSUL 2.150 SMITHTOWN AVENUE RONKONKOMA, ONE (631) 880-3191 MLE: (631) 580-3195 WWW. ENVIROHEALTH.ORG FLAP # 11681 NVLAP #20053 1-0 VIROSCIENCE _ TEM AiR SAMPLE RESULTS TANTS, INC. (“2 NEw Yor« 11779 AREA: CLIENT #: PROJECT NAME: Tech Clean AMEX 22 Thames, 10th Ficor 06- 10233 SAMPLE DATE: RECEIVED DATE: SAMPLER: CUSTODY #: September 20. 2001 September 21, 2001 Final Clearance Ambient L. Savarese B-64-09 Sample ¢ Sample Location Start ai Tainutes Run Time, | Flow Ra Avg. _ Volume Filter Conc. | Sensitivity Simm2 Sicc Seo TEM FL { 1015, 10th Floor 1:12 §:31 259 2590 0.8 0.0019 _ | <Sensitivity pi” Foo 1:00 265 260 TEM F2 } 1010, 10: TEM F3 | 1005, 10 th Floor L:1S 5:28 253 | 250 0.0 | 0.0018 | Sensitivity 0.0 0.0019 | Sensitivity | TEM F4 Center of 10th Floor 1:15 3:50 155 1550 0.0 0.0031. | <Sensitivity TEM F5 | 10th Fluo r Copy Area L:10 33S 15S cep te ee dae 1550 _ 0.0 0.0031 | Sensitivity | 6315883195 Analyzed by: Samples were analyzed us Diffraction (SAED), an Concentration on the fi che effective filter The data The air fulter can accuracy of the endorsement of The samples coflected in action is considered comp! A sesult of zero Date Analyzed: F2zOl ing Philips 4001 ‘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). tex is calculated by taking the umber of asbestos structures and dividiag by the area analyzed. Air concentration is calculated by multiplying area (EFA) by the filter concentration and then dividing by dhe volume of air collected in cubic centimeters (ec). these calculations can be found on the Asbestos Count Sheet. ation relates only (o ait fiber contest. When samples are submited by an outside agency for analysis, Enviroscience, can only guarantee the concentration. This report may not be reproduced without the express permission of Enviroscicnce. This report can not be used to claim by NVLAP or any agency of the U.S. Government. the respoase sction area demonstrated a filter concentration of asbestos less than seventy structures per square millimeter. This response lete according to EPA 40.CFR 763. S=Ashestos structures,co-cubic centimeters, mo=millimeter <= less than, Flow Rate in liters per mimute per square millimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. 9/28/2881 18:14 ENVIROSCIENCECNSLTAN PAGE 22 NYC 9/11 Public Portal Document