Environmental assessment report cover, 375 South End Ave, Nov 2001

NYC 9/11 Public Portal Document ——— 104 East 25th Street pos New York, Now York 10010 foes Bel WSS 212.363.8280 fag Vesa bea peer Fax 212.353.8306 ASSOCIATES INC. October 11, 2001 ALC Environmental 115 W. 30th Street New York, NY 10001 3 Attn: Mr. Joshua Sarett Re: Report of TEM Analysis Dear Mr. Sarett: Following are the results of transmission electron microscopy (TEM) analysis of air samples from our Group No. 5661. Client: Gateway Plaza Mngt. Corp. Project Name: Building 400 at Gateway Plaza - 375 South End Ave. fF Location: Various Sites Samples received: 10/10/01 1 | These resulte will confirm and document the data transmitted today . to you. The analyses were performed in strict conformance with the F methodology of the AHERA Final Rule (CFR October 30, 1987) for clearance of abatement sites. As indicated on the attached Summary f Results sheet, less than 70 asbestos structures per mm’ was detected in all of the twenty-five samples submitted from the site. 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 the post- abatement inside samples pass, the response action may be considered to have been completed. The analyses were supervised by Dr. Michael A. Gorycki, Director of Electron Microscopy. We are pleased to note that our TEM lab has received full | accreditation from NVLAP, as is currently required for recognized analysis 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 materials. Very truly yours, Michael A. Gorycki, Ph.D. Director of Electron Microscopy NYC-WTC_000117503