TEM asbestos analysis summary, PS 131M, Aug 2002

NYC 9/11 Public Portal Document

,04 East 25th St ,0th Fl New York New York 10010 WWW ate enviro com 212 353 8280 Fax 212 353 8306 ASSOCIATES INC

August 23 2002 NYC Board of Education 28 11 Queens Plaza North Long Island City NY 11101

Attn Mr Bernard Orlan

Re Report of TEM Analysis Dear Mr Orlan

Following are the results of transmission electron microscopy (TEM) analysis of air samples from our Group No 8739

Project Name P S 131M 100 Hester Street NY NY Location Entire School Inside and Out Samples received 08/22/02

These results will confirm and document the data transmitted today to Mr Yiannis Efstathiou Project Manager of our office The analyses were performed in strict conformance with the methodology of the 7\HERA Final Rule (40 CFR Part 763 Appendix A to Subpart E October 30 1987) for clearance of abatement sites

The results of the sample analyses are as indicated on the attached document

Copies of the bench sheets are also included as stipulated by AHERA 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 post abatement inside samples pass the response action may be considered to have been completed

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

CONFIDENTIAL, CITY_21MC100_003431134 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000175456