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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

(YATC "levy 'QtK New York 10010 www.atc-envlro com 212 353 5280 Fax 212 353 8306 A S S O C I A T E& I NC

November 27, 2001

ALC Env:ronmencai 1 5W. 3Gth Street New York, NY 10001 Attu: 'MIr, Joshua Sarett

Re: Report ct TEM Anaiysic,

Dear Mr. Sarett:

cl'_ow'_nc are the reSults of transm, .ssion electron microSCopy TEM analysis of a=_ samples from cur Group No 5977.

Client Gateway Plaza Mnot. Corp Pro ect Name 5uildinc 400 at Gateway P_aza 375 South Eod Ave Location: 26t^: Floor Samples received - 11/27/01

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, 19871 for clearance of abatement sites. The results are as indicated on the attached document

Results reported as StrUCt/cc are a fur.c'.ion of air ';olt:'I'e collected in the fie;d and are, as s~cn, not ver_fiab e cy th_s 'aboratory This report may be reproduced only in :.ts entirety and not without prior permission of this laboratory If the post - abatement inside samples pass, the response action may be considered to have been completed. The analyses were supervised by Dr. Michael A. voryckr , Director of Electron Microscopy

We are pleased to note that our TEM lab has received full accreditation from NVLAF, as is currently required for recognized analysis of TEM air samples for A.HERA 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 materials.

Very truly yours,

Michael A. Gorycki, P . Director of Electron Microscopy

NYC-WTC 000121168

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NYC-WTC_000121168Source: NYC Law Department, mirrored locally

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