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Document / 29 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_000121258–000121286

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

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NYC 9/11 Public Portal Document

(YIITC vti tact 4U New York, New York 10010 W watc- enviro.Corn 212.353 8280 AS Fax 212.353.8306 OCIAT S 1 N C.

December 19, 2001 ALC l rvironmental 1:S 14 30th Street New `fork, NY 10001 Atatn: Mr. Joshua Sarett

Re: Report of TEM Analysis Dear IMr. Sarett:

Follc4wing are the results of transmission electron microscopy (TEM) analysis of air samples from our Group No. 6:45.

Ciiei-t: Gateway Plaza wirgt. Corp., 345 South End Ave., NY, NY Project Name: Building 100 Location: Act. SA Samples received: 12/19/01

These resultswill confirm and document the data transmitted today to yo The analyses were performed in strict conformance with the method ology of the AHERA Final Rule (CFR October 30, 1987) for clearance of abatement sites.

The results of the sample analyses are as indicated on the attached dccum~nt.

Resulks reported as Struct/co are a function of air volume collected :Ln the field and are, as such, not verifiable by this labor~torv. This report may be reproduced only in its entirety and not without prior permission of this laboratory. If the post- abatement inside samples pass, the response action may be consi¢lered to have been completed. The analyses were supervised by Dr. Michael A. Gorycki, Director of Electron Microscopy.

We ate pleased to note that our TEM lab has received full creditat;on from NVLAP, as is currently required for recognized ar_aly~is of TEM air samples for AHERA projects, and also approval under,the NY State DOH ELAP program. These analyses were performed by ATC d/b/a ATC Associates Inc.

Please contact me regarding any questions relating to these materi-als .

Very 1Lruly yours,

Mic'ra~l A. Gorycki, Ph.D. Director of Electron Microscopy

NYC-WTC 000121272

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NYC-WTC_000121272Source: NYC Law Department, mirrored locally

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