Air quality test reports cover letter, Jan 2002

NYC-WTC_000105125 EN CONSULT: SMITHTOWN AVENUE RONKONKOMA, 63 1) 5803191 OSCIENCE ‘ANTS, INC. NEW YorK 11779 FACSIMILE: (63 1) 5803195 i Sample #: ENVIROHEALTH.ORG nwLAP, P# 11G8t LAP #2005310 | TEM A18 | By elevato TEM A19 i Section 7, C/S 8 TEM A206 | Section 3, C/S 9 __ Sample Location TEM AIR SAMPLE RESULTS AREA: CLIENT #: IPROJECT NAME: Tech Clean AMEX 22 Thames Thitd Floor 00-10233 SAMPLE DATE: RECEIVED DATE: SAMPLER: CUSTODY #: September 2 24, 2001 September 25, 2001 Arablent B. Gallagher 8-05-03 21 Flow Rate! Volume | Filter Conc.| Sensitlvity |_Alr Conc. 4 SAnm2 Sécc 7 1355 0.0 0.0042 Sensitivity TEM A21 Computer room TEM A22 | Spear 50 _ 9 i 218? 8. | 19582 __ 8S 1462 9.0 0.0022 _ <Sensitivity 0.0 0.0025 <Sensitivity | 0.0 9.0033 Sensitivity | . 10 1400 a aes Nees | Sensitivity | 6318883195 an Analyzed by: The data pertaining to the a ieee accuracy of the filter exdorsement of pr: ‘The samples oollected in the Date Analyzed: PLS 7 md Elementat Analysis using an Energy Dispersive X-ray Analyzes (EDAX). is calculated by taking the wumber of asbestos structures and dividing by the area analyzed. Air concentration is calculated by omltiplying ‘A) by the filter concenteation and then dividing by the volume of air collected in cubic contiencters (cc). ese calculatians can be found on the Asbestos Count Shoat. on relates only to air fiber content, When samples are submitted by an outside agency for analysis, Enviroscieace. can only guarantee the ‘once This report may nat he reproduced without the express permission of Enviroscience. ‘This report can not be used to claim by NYLAF of any agency of the U.S. Government. wee he S=Ashestos structures,co=cubic centimeters, mm=eilEimeter = Jess than, Flow Rate ia liters per minute Samples were analyzed using Philips 400T ‘Transmission Electron Microscope. Ashestas identification is determined by the morphology, visual Selected Area Electron Diffraction (SAED. Concentration on the fitter the effective filtcr area response action areca demonstrated a filer concentration of asbestos less than seventy structures pet square millimeter. This respoase action 1s considered complete according to EPA 40 CFR 763. A result of sero structures por square millimeter is only applicable to the area analyzed. Test results only reflect condilions at the time samples were taken. 43/28/2881 18:14 ENYTROSC IEMCECNSL TAN PAGE 15 NYC 9/11 Public Portal Document