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

NYC-WTC_000095100 ENVIROSCIENCE CON 2.150 SMITHTOWN AVENUE NKONKOMA, New YORK 11779 Ro FACSIMILE: (63 f) 5803195 WWW.ENVIROHEALTH.ORG TEM AIR SAMPLE RESULTS SULTANTS, INC. (CLIENT: Tech Clean SAMPLE DATE: September 24, 2001 PROJECT NAME: AMEX 22 Thames RECEIVED DATE: September 25, 2001 Ambient B. Gallagher B-06-05 PHONE; (631) 5803191 AREA: Stb Floor SAMPLER: CLIENT #: 00-10233 CUSTODY #: 89/28/2821 18:14 NYC 9/11 Public Portal Document ELAP # 11681 NVLAP #20053 1.0 ween oe —— - i Sample # Sample Location _ Surt i Enid | Run Time Flow Rate Vohune | Rilter Conc.| Sensitivity | Air Coac. _ a minutes | Avg. | Liters Sénm2 Séoo Skee TEM A28.. Elevator lobby oe 24:23; 00:47! 198 | 85 1658 0.0 0.0029 TEM. A29: Hall by room 307 cee eee vere cee BES 0040, 196. | 8.5_| 1666 9.0 0.0029 TEM A30! Hall by room 520 2asivoat! iso | 5 | 1666 | 00 | goo TEM A31. Room $24 12126! 0042! 196 | 85 | 1666 1 00 6,0029_| <Sensitivity | {TEM A32'Fan room 509 [TEM 33 Outside room SIL — 230i one; to | 7 | 337 | oo | e036 | a ee cone ode we ome ~ ieee et eheenee pony s te. i : i i et cess ne nee se eee we sened - 257 S=Asbestes stnictures,co=cubic centimeters, mme=millimeier Analyzed by: eC 7 Sette Date Analyzed: 727°C "tose than, Flow Rats afters per unas Samples were analyzed using Philips 400T Transmission Electron Microscope. Asbestos Identification is determined by the morphology, visual Sefocted Area Electron Diffraction (SAED), and Elemental Analysis using an Encrgy Dispersive X-ray Analyzer (EDAX). Concentration on the filter is calculated by taking the number of asbestos structures and dividing by the arca analyzed. Aix concentration is calculated by multiplying the effective filter area (EFA) by the filter concentration and then dividing by the volume of air collected in cubic centimeters (cc). The data pertaining to thes calculations can he found oa the Acbestos Count Sheet, The ais filter concentration relates only to air fiber content. When samples are submitted by an outside agency for analysis, Enviroscience. can oly guarantee the accuracy of the filter concentration. This report may not be reproduced without the express permission of Envirosclence. This report can not be used to claim endorsement of products by NVLAP or any agency of the US. Goverment. ‘Tha samples coflected in the responce action sree demonstrated a filter concentration of asbestes less than seventy structutes por square millimeter. This response action is considered complete according to EPA 40 CFR 763. : A result of zero structures per square millimeter is only applicable to the area analyzed. Test results only reflect conditions at the time samples were taken. 6315883195 ENVIROSCIENCECNSL TAN PAGE 17