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Chain of custody for air samples from 125 Water Street,

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Custody form documenting the transfer and analysis of air samples collected at 125 Water Street in September 2002.

NYC-WTC_000129725–000130035
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NYC 9/11 Public Portal Document

104 East 25th St.. 10th ri

~u New York. New York 10010 • www.atc-env1ro corn 212.353.8280 Fax 212.353.8306

ASSOCIATES I N C.

September 24, 2002

ATC Associates Inc. 104 East 25th Street New York, NY 10010

Attn: Mr. Ben Sallemi Re: Report of TEM Analysis

Dear Mr. Sallemi: electron microscopy (TEM) of transmission Following are the results No. 8882: from our Group analysis of air samples

Client: D.E.P. NY, NY Clean-up, 125 Cedar St., Project Name: D.E.P. Location: Entire Building 09/23/02 Samples received: today confirm and documeentothe data strtransmitted mance These results will performed ifl dr to your office. The analyses were (CFR October 30, 1987) methodology of the AHERA Final Rule with the abatement sites. for clearance of the attached sample analyses may be found on The results of the document. of air volume Struct/cc Resu lt s reported as nctl~er f fable by this are, ase such funot collected in the field and be reproduced only in its entirety and laboboraatory. This report may of this laboratory. permission not without prior lab has ived pleased to note that our TEM required forerecgnized We are c ed;ration from NVLAP, as is currentlyERA p jrcts, AHo and also approval analysis of TEM air samples for These analyses were LAP gram. under the NY ate D011 Associ ates Inc. performed by ATCtd/b/a ATC E relating to these me regarding any questions Please contact materials.

Very truly yours,

O Michael A. Gorycki, Ph.D. Director of Electron Microscopy

NYC-WTC 000129836

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NYC-WTC_000129836Source: NYC Law Department, mirrored locally

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