Air quality test reports cover letter, Jan 2002

NYC-WTC_000105088 ENVIROS CONSULT. }O SMITHTOWN AVENUE RONKONKOMA ONE: (631) 580-3191 ILE: (631) 586-3 195 ENVIROHEALTH.ORS CIENCE TEM AIR SAMPLE RESULTS CLIENT: Tech Clean AP #1168) NVLAP #2005310 ANTS, INC. PROJECT NAME: 86 Tcinity Main Trading Floor . New Yori 11779 AREA: CLIENT #: 00-10233 Sample Location Start | End SAMPLE DATE: September 19, 2001 American Stock Exchange RECEIVED DATE: September 21, 2001 SAMPLER: CUSTODY #: Page 1 of 3 L, Savarese/C. Gilbert B-04-06 Run Time Flow ae Youmme Filter Cone,| Sensitivity minutes Avg. Stmm2 Sfcc Sécc Floor Post 5 #10 6:20 | 8:20 10 1200 0.0 0.0041 Trade Floor Post 8, Section 1__ : 6:35 (8:40 Floor Post 12 #14 0 ef O90 890 fp 10 1200 | 10 1250 0.0 0.0041 0.0 0.0039 _| <Sensitivity | ¢ Floor Post 9, Section & 6:25 § 8:42 10 1370 0,0. 0,0035__ {| <Sensitivity peeeaata Rin cy Fina ater gion aoe ee ee ee Fe ee 4 Room Post 21, MF 39 7:00 | 9:00 Trade Fioor, Upper Level, Section E, Monitor 16 | 6:30 | 8:55 | 1 10 1450 0.0 0.0034 10 1200 00 | 0.004 m Post 22, ME 15. . 7:00 | 9:15 ‘Red Room Past 22, Section A Ce ee oe f O45] BAST 135 AO | 3200 | 40 1350 9.0... 10,004} 0.0 0.0035 <Sensitivity <Sensitivity | __|_<Sensitivity |' <Sensitivity | TEM £10] 15th Floor 9:20 | 11:20 120 10 1200 0.0 0.0041 <Seusitivity | 935 | 41301 115 10 4250 0.0 0.6039 Sensitivity ‘TEM FI! 1 9:40 11:40 | 120 10 3200 0.0 0.0041 <Sensitivity | Analyzed by Samples were Diffraction Concentration oa ate wea (EFA) by the filler concentration and then dividing by the volume of air collected in cubic centimeters (ec). the effective The data pert aining to The ais filter conce: accuracy of the fitter eadersement of pros The samples ¢ action is cn A result of zero S=Asbestos structures,ccecubic centimeters, mm=millimeter <= fess than, Flow Rate in liters per minute CA fc 400T Transmission Electron Microscope. Asbestos identification is determined by the morphology, visaal Sclected Arce Electron Elemeutal Analysis using an Energy Dispersive X-ray Analyzer (EDAX). ter is calculated by taking the number of asbestos structures and dividing by the area analyzed. Air concentration is calculated by multiplying ese calculations can be found on the Asbestos Count Sheet. ion relates only to air fiber content. Whea semples are submitted by an outside agency fur analysis, Enviroscience. can only guarantee the consentration. This report may not be reproduced without the express permission of Enviroscicnce. This ceport can not be used to claim by NLA ay agency of the U.S. Govecnment. the response action area demonstrated a filter concentratiog of asbestos Jess than seventy structures per square millimeter. This response ommplete according to EPA 40 CFR 763. ctures per square millimeter Is only applicabie ¢o the area analyzed. Test results only reflect conditions at the time samples were taken. 4 03/26/26@1 18:14 S31 5823195 PAGE 13 ENVIROSCIENCECNSL. TAN NYC 9/11 Public Portal Document