NYC-WTC_000210716

NYC 9/11 Public Portal Document

Enviroscience TEM AIR SAMPLE RESULTS CSi 5? CO

Consultants, Inc. CLIENT: ■Jech Clean SAMPLE DATE: September 20,2001 CO 2150 GMtlHrOWN.AVENUE PROJECT NAME AMEX RFITIVi nOAni: September 21.2001 Ronkonkoma, New York 11/79 (S KiaNE(63U58a319l AREA. 22 Thames, 7th Floor SAMPLER r-'ACSWiiL; (631) 5803195 B.Gdlagher WWW ENVlROHEAiLTM.OHG CLIENT#. 0OI023.I CUSTODY #: B-04-03 ELAP’# 11681 a- co NV1.AP#200S310 ►.» tn tn o OJ Sample »___ Sample Imitation _StaFL_^„ Run Time Row Rate Volume Fiber Cone. Seoritivity Air Cone. to minutes Avr, Liters S/inm2 S/cc S/cc oi

Mandel office 17:12 20:35 203 7 1421 0.0 0.0034 <Sanfiwtv TBMA2 KateDufft^ce 17:15 20:50 _-2l5.. 7.25 1559 25.25 0.0031 0.0062 JEM Al , Room 710 17:25 20:54 20? 83 im 0.0 0.0027 <SciiailvRT

IB* A«_ KOOW1705____ ____ 17:25 21:00 215 _?A. 2W3 1263 O.(»24 0.0024 TEMA5 Outside room 70.3 17:31^:08 214 7.5 1605 63.13 0.003 0.015 z

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S^AsbcstcM sCn9CUtfe«>cc>*c0bic ccatimcteo, oim^willnDctcr Analyzed by; Date Analyzed; <= Lets (haiK Flow Rale, in biers per mbnste Q Simpler were aoalyred osing Philips -400T TranoniMioo Eleettuu Mlaoscopp. Asbestos ideoUBestion is determined by the nuNphology, visual Selected Aiea Election H DitTraclion (SAED), and Eleniental Analysis using an Energy Disposive X-iay Analyxa (EDAX). Coaoentratioii oo (he filter is calculated by taking (he number of aabettos structures and dividing by (he am analyzed. Air oonceotration la calculated by tnnltiplyiiig the effective filter area (EFA) by the Oiler conoentratioa and then dividing by tee volume of air collected io cable ocodtneten (oc).

I o The data pertaining to Utesc calculations can be found on the Asbestos Count Sheet The air filter coBoenbration relates only to air fiber content. When aamples are aubmitied by an owuide agency fin analysia. Envirosdcncc. can only gnaiantce (be (ccuracy of the filtei concentration This report may not be rqprodaced wUhotK (De express permission of Envhwcience. This report can not be used Io claim T3

L o endorsemenr cf products by KVIAP or any agency of (he U.S. Govtintntw, I o The tampiet collected in tee response action area demonstrated a filter coocentration of asbestos less (han seventy structures per square milliineter. THS response o action is oonsMeietl complete according to EPA 40 CER 763. CO on A result of zero sttuOutvs per square miUltBeter is only applicable to the area analyzed. Tert teiults only reflect conditioBs at (he time samples were takca o o

NYC-WTC_000210716