Air quality test reports cover letter, Jan 2002

NYC-WTC_000105130 ENVIRO CONSULT. TTHTOWN AVENUE RONKONKOMA, SCIENCE ANTS, INC. New York 11779 PHONE: (631) 5803191 MILE: (631) 5803195 ENVIROHEALTH.ORG LAP # 11681 AP #20053 1-0 AREA: CLIENT #: TEM AIR SAMPLE RESULTS Tech Clean PROJECT NAME: AMEX 22 Thantes 8th Floor SAMPLE DATE: _ RECEIVED DATE: SAMPLER: CUSTODY #: “September 24, 2001 September 25, 2001 Ambient B. Gallagher B-05-07 | ‘Sample # t _____. Sample Location Rua Time minutes Avg. | Liters Flow Rate! Volume | Filter Conc.| Sensitivity Simm2 Skcc _ Ske Air Conc. | 806 by offsetpress 1%6 9 1764 0.0 0.0027 | <Sensitivity TEM A7 Roo 1__ 185 8.5 1573 0.0 0.0031 | <Sensitivity : TEM A8 | Room 805 by front door 187 0.0035 _: <Sensitivity ; TEM.A9 | Hallway by men's room i- PF -naghh nr (TEM AlU! By 179 _ 15. _|_ 1403 0.0 9 16M 0.4 0.003 <Sensitivity , northwest comer of office _ | TEM Alt | Outdoors ist 85 | 1674. 0,0 6.0029 <Sensitivity | 280 0.0035 ‘<Sensitivity ED Meaney Senna ame rrthachemtenierinnsDitin de + | Analyzed by: ate Analyzed: 7-26 C7/ Diffraction (SAED), and Elemental Analysis using an Energy Dispersive X-ray Analyzer (EDAX). is catculated by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying . Concentration on the filter the effective filter ar The date pertaining to these The aic filter concentration relates only to air fiber content. When samples are submitted by an outside agency for analysis, Envixescience. can only guarantee the accuracy of the filter endorsement of products The samples collected in action is considered somlete A result of zero structures per catoulations can be found on the Asbestas Count Sheet. (EFA) by the filter concenwation and then dividing by the volame of air collected in cubic centimeters (cc). S=Ashestos structures,co-cuhic centimeters, mm=millimeter <= lesa than, Flow Rate in liters per minute Samples were analyzed using Philips 400T Transmission Electron Microscope. Asbestos identification is determined by the morphology, visual Selected Acca Electran concentration. This report may not be reproduced without the express permission of Eaviroscience. This report can not be used to claim t by NVLAP or any agency of the US. Government. he sesponse action asea demonstrated a filter concentration of asbestos less than seventy structures per square millimeter. This response according to EPA 40 CFR 763. square millimeter is only applicable to the area analyzed. Test results only reflect conditions at the dme samples were taken. 69/28/2881 16:14 6315883195 ENVTROSCTENCECNSLTAN PAGE 20 NYC 9/11 Public Portal Document