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NYC-WTC_000188656

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NYC 9/11 Public Portal Document

ATC ENVIRONMENTAL, INC. APPRCVED NY STATE DOH ELAP # 10879 104 East 25th Street ACCREDITED NVLAP Lab Code # 1187 New York, NY 10010

Summary of TEM Results

N.Y.C. Board of Education DATE: lO/lB/Cn 28’11 Queens Plaza North Long Island City, NY 11101 Mr. Bernard Orlan

Project/Site Identification: New Stuyvesant H.S., 345 Chambers St., NY, NY Exterior & Interior of Buildincf & Roof CONCLUSION:

STATISTICAL SUMMARY

1} Inside Samples Asbestos Concentration TEM# Pro-)ecc # Volume(1) S/inm^2 S/cc ngm/m^3 5716- 61540 NSHS-EIR-10/17-8 1899 0.0 0.0045 * 5716- 61541 NSHS-EIR-10/17-9 1899 0. 0 0.0045 * 5716- 61542 NSHS-EIR-10/17-10 1908 0.0 0.0045 * 5715- 61543 NSHS-EIR-10/17-11 1899 0.0 0.0045 * 5715- 61544 NSHS-EIR-10/17-12 1899 0. 0 0.0D45 * Av€rage= 0.0 0.0045 0 2) Outside Samples Asbestos Concentration TEM# Project # Volume(1) S/mm*2 S/'cc nam/m'^3 5716- 61533 NSHS-EIR-10/17-1 1899 C.0 0.0045 * 5716- 61534 NSHS-EIR-10/17-2 1899 0.0 0.0045 * 5716- 61535 NSH3-EIR-10/17-3 1890 0.0 0.0045 * 5716- 61536 NSHS-EIR-10/17-4 1899 C.0 0.0045 * 5716- 61537 NSHS-EIR-10/17-5 1899 C. 0 0.0045 * 5716- 61538 NSHS-EIR-10/17-6 1899 C.0 0.0045 * 5716- 61539 NSHS-ElR-10/17-7 1908 0.0 0.0045 * Average= C.0 0.0045 0 3) Blanks Asbestos Concentration TEM# Project # S/inm*2 S/cc nqfn/m*3 5716- 61545 NSHS-EIR-iO/17-13 Not Analyzed 5716- 61546 NSHS-EIR-10/17-14 Not Analyzed 5716- 61547 NSHS-EIR-10/17-15 Not Analyzed Averages N/A N/A NM 4) Value of T - Statistic : N/A

None detected; concentration equivalent to analytical sensitivity assigned.

This test report relates only to the specific items cited in the analysis. The analysis was carried out according to the approved TEM method. The laboratory is in compliance with ths quality specified for the method.

This report must not be used by the client to claim product endorsement by NVLAP or any agency of the U.S. Government.

Analyzed by: Michael A. Gorycki, Ph.D, Marek Peysakhov Director of Electron Microscopy

CITY_21MC100_003082282

NYC-WTC_000188656

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NYC-WTC_000188656Source: NYC Law Department, mirrored locally

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