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

NYC-WTC_000095106 ENVIROSCIENCE CONSULTANTS, INC, [“=* 2.150 SMITHTOWN AVENUE RONKONKOMA, NEW YorK 11779 Prone: G63 1) 580 3191 Facsmiie: (63 1) S80:3195 WWW.ERVIROHEALTH. ORG ELAP # 11681 NVLAP #2005310 PROJECT NAME: AREA: CLIENT #: TEM AIR SAMPLE RESULTS 65 Broadway 17th Floor 00-10233 SAMPLH DATE: September 21, 2001 RECEIVED DATE: Septerober 21, 2001 Ambicat B. Gallagher B-04-05 SAMPLER: CUSTODY #. Sample #| Sample Location Start _| minutes TEM A} | East end 12:15 02:55 | 160 Hlow Rave Volume | Fiker Conc. | Sensitivity} Air Conc. |__Ave. | Liters | S/mm2 Slee} ___ Slee 7.5 1200 60 | 0.0041 | Sensitivity | TEM A3 | Kitchenette TEM A4 | Security des! __-|_ 12:16 02:54 | 154 3 1386 | 9.0. 0.0035 _| <Sensitivity | 12:15 02:59 164 8.5 1394 0.0___| 0.0035 _| <Sensitivity | 12:10 02:58 168 wD. 1512 0.0 0,0032__|_<Sensitivity | TEM AS | West end 12-05 02:58; 173 | {1471 | 0.9 0.0033_| <Seusitivity Analyzed by: Samples were analy: Date Analyzed: / S=Asbestos stractures,co-cubic centimeters, mm=<millimeter <s less than, Flow Rate in liters per minute Diffraction (SAKD), and Elemental Aualysis using an Energy Dispersive X-ray Analyzer (EDAX). _. Concentration on the effective filter The data pertaining to these calculatious cam be found on the Asbestos Count Sheet. The air filter concentration accuracy of the filer endossement of products by zed using Philips 400T Transmission Electron Microsoupe. Asbestos identification is determined by the moephology, visual Selected Ares Blectron the filter is calculated by taking the mamber of asbesios structures and dividing by the area analyzed, Air comcentration is calculeted by nmitiplying area (EFA) by the filter concentration and then dividing by the volume of air collected in cubic centimeters (cc). relates only to air fiber contest. When samples ate submitted by an vutside agency for avalysis, Envirosclence. can only guarantee the ion. This report may not be reproduced without the express permission, of Envicoscience. This repart can not be used to claim NVLAP or any agency of the U.S. Government. The samples colected in the response action area demonstrated a filler comcentration of asbestos less than seventy strectuces per square millimeter. This response complete according to EPA 40 CFR 763. action is considered A cesuit of zero structure 8 per square miltimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. % 49/28/2081 18:14 6315883195 ENVIROSCTENCECNSL TAN PAGE 23 NYC 9/11 Public Portal Document