NYC-WTC_000231741

NYC 9/11 Public Portal Document

WTC 104 East 25th Strw New York. Naw York 1001 www.atc- en viro.cor 212.353,828 Fax 212.353.830 ASSOCIATES INC,

October 4, 2001 Warren & Panzer Engineers, P.c. 228 E. 45th Street New York, NY 10017 Attn: Mr. Fabio Pedone- — Re- i— ■ Report- of ” TEM- -ftnalys-is ■ - Dear Mr. ■ Pedone: , Following are the results of transmission electron microscopy (TEM) analysis of air samples from our Group No. .5605, Client: NYCSCA Address: P.S. 234, Warren St.' Location; various Sites Samples received: 10/04/01 These results will confirm and document the data transmitted to you by telephone and Fax today. The .analyses were performed in strict conformance with the methodology of the AHERA Final Rule (CFR October 30, 1987) for clearance of abatement sites. As indicated on the attached Summary. Results sheet, less than 70 asbestos structures per mm’ was detected in all of the five inside samples submitted from the site by Warren and Panzer Engineers. Results reported as Struct/cc are a function of air volume collected in the field and are, as such, not verifiable by this laboratory. This report may be reproduced only in its entirety and not without prior permission of this laboratory. If inside post- abatement samples pass, the response action may be.considered to have been completed. The analyses were supervised by Dr. Michael A. .Gorycki, Director of Electron Micrbscopy. We s^re pleased to note that our TEM lab has received fnll accreditatl.on from NVLAP and also approval under ■ the NY State DOH • ELAP program, as is currently ret^ired for recognized analysis of TEM'air samples for AHERA projects. 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.

ichael A. Gorycki, Ph.D. Director of Electron Microscopy

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NYC-WTC_000231741