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Document / 45 pages

Air monitoring report, 345 South End Avenue, Jan 2002

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Air monitoring report for 345 South End Avenue buildings conducted in January 2002 showing TEM results.

NYC-WTC_000121287–000121331

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: Parking Garage

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NYC 9/11 Public Portal Document

ALl' ENVIRONMENTAL INCORPORATED The Fist Choice jiir Environmental Testing & Consulting

January I . 2002

Gateway Plaza Management Corporation South End Avenue New York New York 1028(

Subject Random Air Sampling-Ambient Air Monttonng Gateway Plaza Buildings Sampling Date(s) January 2. 4 K. `( 10. I I I4 1 S I o

Gentlemen

in the 100. Enclosed. please Lind the report for air monitonne performed at the above referenced address Transmission Electron Mtcroscop~ 200, 300. 400 and 500 buildings. Air sampling was conducted via (TEM) analysis at the request of the owner

Electron M.icroscop~ A T C Associates (CLAP p1()879) analyzed the samples using the Transmission achieved the criteria heloic <70 (TEM) Methodology The results indicated that the areas acceptance

(Please See Attached TEM Reponi structures per mm2 set by the federal re2ulations %urroun(itn,, :irc'a . . According to the EPA. 'in evaivatin data ;rum the t1 arid trade (enter and the Ashestos Hazard r_mersenci Response 4i i ;II es aivatr t.s using a protective standard under ,1tlER,-1 the Th1S t'ert Ctringeni standard that i' used to Inc risk tram a.snesoio. :n the outdoor and indoor air is a

:shoal Ater asnestoss has heen removed or ahateci it determine whether chiidren mai re - eater a building long-term exposure t.i'.-I has chosen to use this standard. hecauce it is the is based on assumptions at though it that the public will he exposed to asbestos front most stringent and protective even i.s uniikeiv

the World Trade , 'enter site for extended periods of time equipment through which air in the T:: determine asbestos levels, air filters are collected from monitoring school building has passed and viewed through a microscope. The number of structures material that has asbestos fibers on or in it - is then counted. The measurements must be -0 or fewer structures per sauare ,o::llimeter before children are allowed inside.

Occupational Safer' and Health There is also a federal standard for asbestos exposure under OSfL-1, the .-1 ct which is used to protect workers on-the-job The standard is 1 fiber per cubic centimeter averaged over an eight-hour day To he as protective as possible. EPA is using the school re-entry standard in tests around the World Trade ('enter health threat .-Isheslos Levels above '0 structures per square millimeter do .S'O'T imply an immediate of asbestos fibers are inhaled over a long exposure becomes a health concern when high concentrations period. Illness is ven' unlikely to result from a .angle, high-level exposure, or from a short period of exposure to lower levels Yakhva Ben•avuses The air samples were collected by Alvin B Blake (Certificate #.AH 01-03528) and (Certificate #AH - -21 1911 NY State Department of Labor Project Monitors

Sincerel} ^ 1 I i 11 l~

Michael Larntnas ALC Enironmentat incorporated 115 West 30th Street * 1 1 th Floor * New York. Nrw York 10001 y 21 2.274. 1001 888.4((s. 3(,20 , Fax: 2 ) 2.270.h 7 47

lien? )f" icr The 13rllevur • 5u11c (5 0 100 Rmxs1 ircct PIIIladcll)hl;i 1'_A i°101 • ' I i ' si+sisi • 7t a N;; N • I ,I\ = 1 ? ,, 12 si5iu

ENTERED iii ii ;\I ( i iniiIlrimi'ntaI Ioin

NYC-WTC 000121287

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NYC-WTC_000121287Source: NYC Law Department, mirrored locally

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