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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 Fl New York, New York 10010 V www.atc-enviro.com 212.353.8280 Fax 212.353.8306

ASSOCIATES I N C.

September 25, 2002

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

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

Dear Mr. Sallemi: electron microscopy (TEM) omtoursmission °f Foll owing are the resultsf G r oup No. 8$$7 analysis of air samples

Client: D.E.P. 125 Cedar St., NY, NY Project Name: D.E.P. Clean-up, Building Location: Entire received: 09/24/02 Samples transmitted today confirm and t the mance dinastrict • These results will analyses dreumerformed we p 30, 1987) The October to your off ice. the AHERA Final Rule (CFR of with the methodology abatement sites. for clearance of on the attached sample analyses may be found the The results of document. of air reported as Struct/cc are a funoctioner v ifiable by othis Results ar such, nt collected in the field and beereproduc d only in its entirety and laboratory. This report may of this laboratory- permission not without prior ll TEM lab has ized eived e are pleased to note that ollrrently required for o ; rani on from NVLAP , as is cu AH°ERAatpro ects, a nd also approval analysis of TEM air samples for These analyses were ate DOH LAP unde r the NY EAssociates Inc. performed by TCt d/b/a ATC to these Please contact me regarding any questions relating materials.

Very truly yours,

G~ Ph.D. • Michael A. Gorycki, Microscopy Director of Electron

NYC-WTC 000129820

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NYC-WTC_000129820Source: NYC Law Department, mirrored locally

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