Air quality test reports cover letter, Jan 2002

NYC-WTC_000105133 ENVIROSCIENCE CONSULTANTS, INC. 2.150 SMITHTOWN AVENUE RONKONKOMA, New York 11779 PHONE: (63 1) 5803191 FACSMILE: (631) S80-3195 ENVIROHEALTH.ORG ELAP# 11681 NVLAP #2005310 CLIENT: PROJECT NAME: AREA: CLIENT #: TEM AIR SAMPLE RESULTS SAMPLE DATE: 65 Broadway 17th Floor SAMPLER: 00-10233 CUSTODY #. RECEIVED DATE: September 21, 2001 September 21, 2001 Ambicat B. Gallagher B-04-05 Sample # Semple Location Start_| End | Run Time} Flow Rate} Volume | Fitter Conc. Sensitivity} Air Conc. minutes Avg. Liters Simm2 Sicc __ Nec TEM Al} | East end 12:15 | 02:55 1 7.5 1200 0.0 | 0.0041 | <Sensitivity | 12:16 | 02:54 | 154 9 1386 _| TEM A3 | Kitchenette 0. | 0.0035 | <Sensitivity | 12:15 | 02:59} 164 8.5 | 13% 0.0 | 0.0035 | <Sensitivity TEM A4 | Security des! 12:10 | 02:58 168 | 9] 1522 TEM AS | Westendreception 00 0.0032 _| <Sensitivity | 12:05 | 62:58 | 173 | 85. 471 [ 0.0 0.0033_| <Sensitivity | — Analyzed by: Samples were Diffraction (SAED), aod Concentration on the filtex the effective filter area Date Analyzed: S=Asbestos stractures,cc=cubic centimeters, mm=smillimeter The data pertaining to these calculaticus can be found on the Asbestos Count Sheet. The air filter concemration accuracy of the filter endossement of products <= less than, Flow Rate in liters ger mime analyzed using Philips 400T Transmission Electron Microscope. Asbostos identification is detertnined by the morphology, visual Selected Area Electron Elemental Aualysis using an Encrgy Dispersive X-ray Analyzer (EDAX). is calculated by taking the number of asbestos structures aud dividing by the area analyzed. Air coacenteation is calculated by multiplying (EFA) by the filter concentration and then dividiag by the volume of air collected in cubic centimeters (cc). relates only to air fiber content. When samples are submitted by an outside agency for avalysis, Enviroscleace. can only guarantee the ion. This report may not be reproduced without the express pammission of Envicoscieuce. This report cas not be used to claim by NVLAP ot any agency of the U.S. Government. The samples collected in the response action area demonstrated a filter concentration of asbestos Jess than seventy structures per square mifimeter. This response action is considered complete A tesult of zero structures per acoorting to EPA 40 CFR 763. Square millimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. ENV TROSC TENCE CNSLTAN 89/26/2081 18:14 6315883195 PAGE 23 NYC 9/11 Public Portal Document