NYC-WTC_000202281

NYC 9/11 Public Portal Document

< New York,/ New York 10Q10 wwv\'.atc-envirQ.com

Fax 212/353,8306 A S S 0 Cl A T E S INC .

■ /January;-2 6 , ^’O 0,2. N . Yj. C. Board of Education / 28-11 Queens Plaza North 14584-0819 Long Island City', NY lllGT Attii ■ ■ 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. 6455:.

Proj ectiNarae: , P . S. 89M', 201 Warren Street , NY, NY Location: Playground, Root, 1st Floor Hallway . Samples received: 01/2 5/02 \ i -' /

These res,ults will confirm and document the data transmitted today to- Mr. Andreas Andreou, Project Manager, of our office. The analyses were performed in strict Gonformance with the .methodology- • ' of the AHERA Final Rule (4 0 CFR Part 763, Appendix A to jSubpart E / October 30, 1987)ifor clearance of abatement sites.

The results of the sample analyses are as indicated on the attached, 1 document. ■ / ■• ■ 1 •■ /

Copies of the bench sheets? are ' also included as stipulated by AHERA. MMI TEM cassettes. Lot No. 00263916, were used. 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. The ^analyses were supervised by Dr. Michael A. Gorycki',, Director of ; Electron Microscopy.

We are pleased to note - that dur TEM lab' has received full accreditation from NVLAP, as is currently required for recognized analysis of ITEM air samples for AHERA pro jects, and also /approval i<: 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. Direc tor of E1ectron Mieroscopy

CITY_21MC100_011276248

NYC-WTC_000202281