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Document / 45 pages

Air monitoring report, 345 South End Avenue, Dec 2001

Machine-extracted title · confidence 95%

Air monitoring report for 345 South End Avenue buildings conducted in December 2001 showing TEM results.

NYC-WTC_000121138–000121182

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

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NYC 9/11 Public Portal Document

4 cas: 2z,:r

(Y1TC ASSOCI ATE S INC New York New York 10010 www.aic-envirocom 212 353 8280 Fax 212 353 8306

November 30, 2001 ALC Environmental 115 W. 30th Street New York, NY 10001 Attn. Mr. Joshua Sarett

Re: Report of TEM Analysis

Dear Mr. Sarett.

Following are the results of transmission electron microscopy )TEM) analysis of air samples from our Group No. 6001

Client: Gateway Plaza Mngt. Corp. Project name: Building 400 at Gateway Plaza - 375 South End Ave. Location: 17th Floor Samples received: 11/30/01

These results will confirm and document the data transmitted today to you. The analyses were performed in strict conformance with the methodology of the AHERA Final Rule (CFR October 30, 1987) for clearance of abatement sites. The results are as indicated on the attached document.

Res..:lts reported as Struct/cc are a function of air volume collected in the field and are, as such, no: verifiable by this laboratory. This repot"- may be reproduced only i:': its entirety and not w thous prior permission of this ,aboraccry. 'f the post - abatement _-:side . samples pass, the response action may be considered to have been completed. The analyses Were supervised by Dr Michael A Goryck „ Director of Electron Mcrcscopy.

we are pleased to note that our TEM lab :.as received f:; 1 c ation from NVLAP, as ie currently required for recognized analysis of TEM air samples for AHERA projects and also approval order the NY State DCH ELA? orocram These 3.^.a_ ISes were nerformed by ATC d/h/a ATC Associates Inc.

Please contact me regardinc any g, .esti.ons relating to these materials

very tru_v yours,

Michael A. Gory" k Yr . %..re^._L?'_' of Elect ron Mic reso _ v

j NYC-WTC 000121142

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NYC-WTC_000121142Source: NYC Law Department, mirrored locally

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