Cover letter enclosing air quality reports, Trinity Place, Jan 2002

NYC-WTC_000095095 ENVI CONSU 50 SMITHTOWN AVENUE RONKON FACSIMILE: (631) 5B0-23195 WWW. ENVIROHEALTH.ORG NVLAP #29053 1-0 L sannne ane ROSCIENCE | TEM AIR SAMPLE RESULTS : Tech C 5. De e , LT. ‘ANTS, INC, CLIENT: Clem AMPLE DATE: ents 19, 2001 _ IPROUCE NAME: American Stock Exchange RECEIVED DAIE: September 21, 2001 KOMA, NEW YORK 117779 86 Trinity 89/26/2884 18:14 CLIENT #: 00-10233 CUSTODY #: B-04-06 ELAP # 11681 anon —_ eee ecenee beet ome et 6315693135 Semple Location _ _. | Stet: End { Rom Time | Flow Rate) Volume Filter Conc. | Sensitivity | Air Cone. _| ecntese ¢2e sennsesmamereaeserwnet erantete aent onnirAlhccrnenennine Senne Sem Sampie # minutes | Avg. Liters Sinm2 Sico Skee wae on 6 ree { ‘ TEM F12| No sample i TEM F13} No samp! | TEM Fi4|No sample i ree Marene ewer a gnes ‘ "TEM F15! 12th p50 120 dO .. 1200._| 0.68 0.0041 _|_<Sensitivity | yFloor, Room 211 E950 “TEM FIG; 12th Fi ‘TEM F17) 10th Floor oor, Room 1208 ve 10:00 | 12:00; 120 10 1200 0.0 C.0041 | Sensitivity | gor South ; 10:15 | 12:15 | 120 10 {| 1200 0.0 0.0041 _} Sensitivity | + « ENV? j : TEM 18! 50th Fl : TEM FI9; LOth TEM P20} 7th Fi REloor Central ee cece ee cern ee ee neers oo f SOTO BAS 195 iG | .1950_§ 12.63: 0.0025 9.0025 h Floor Lobby/Receiving 10:35! 3:45; 199 | 10 1908 0.0 O.M26 _| <Sensitivity Floor, Room 716 vee tee oo a 10:35 | 12:35) 320.0310 1200 0.0 0.0041 | <Sensitivity | {TEM P21 7th TEM P22: 7th Floor Roam 708 10:30 1. 12:35 | 12:35) 120 1Q 1200... 9.0 O04! | <Sensitivity | 12:30 | 120 10 1200 0.0 0.0041 | <Sensitivity | ROSCIENCECMSL TAN Analyzed by: Samples were aye L <P Z 7 — : > ? SsAsbestos structures,coxcubic centixacters, mmemillimeter LLARAEL Date Analyzed: GAZA <= less than, Flow Rats in ters per minete using Philips 400F Transmission Electron Microscope. Asbestos identification is determined by the morphology, viseal Sclected Arca Electron Diffraction (SAED), and Hlementat Analysis usiug ax Energy Dispersive X-ray Analyzer (EDAX). Concentration on the fil the effective filter The data pectaiuing to these calculations can be found oa the Asbestos Count Sheet. The air filter concentration relaies caly to air fiber content. When samples sre subssitiod by en uvtside agency for analysis, Eaviruscicnoe. can only guarantee the accuracy of the fitt endorsement of products The. samples collected ia the response action area demonstrated « filter conceatration of asbestos less than seventy structures per square miilimeter. This response action is considered corap A result of zero stractur ter is calculated by taking the aumber of ashestos structures and dividing by the area analyzed. Air concentration is calculated by nuiltiplying atea (EKA) by the filter concentration and then dividing by the volume of ait collected in cubic centimeters (cc). er concentration. This cegort may not be ceproduced without the express permission of Enviroscience. This report can not be used to claim by NVLAP or any agency of the U.S. Government. fete according to EPA 4 CFR 763. c% per square willimeter is only applicable to the arca analyzed, Test results only reflect conditions at the time samples were taken. PAGE 12 NYC 9/11 Public Portal Document