NYC 9/11 Public Portal Document
•09/18/2001 09:27 2123533599 ATC ASSOCIATES INC PAGE 03/02
ATC ENVIRONMENTAL, INC. APPROVED MY STAT8 00N SLAP * 10
104 East 25th Street ACCFEaITED NVLAP La Coda 0 tia'
New York, NY 10010
Summary of TEM Results
N.Y.C. Housing Authority DATE: 09/16/01
250 Broadway, 16th Floor
New York, NY 10007
Mr. Briar. Clarkc
Project/Site Identification: 250 Broadway, NY, NY
Floors 31, 27, 19. 8
CONCLUSION:
STATISTICAL SUMMARY
1) Inside Semvlea Mbastoe Concentration
TEM* Proiect q Volume(1) S/mm"2 S/ce ngm/m"3
Average= A '
2) outride Sampler Asbestos Concentration
TEM# Proicet $i Volune(1) S/mm"2 S/cc n0m/m"3
5512- 59076 ,/ 02 3.500 0.0 0.0048&
5512- 59077 d 03 1600 2a.2 0.0048
5512- 59072 b" 04 1000 0.0 0.0046
5512- 59079 ✓ 05 3.300 0.0 0.0045 •
5512- 59020 V 06 • 1800 0.0 0.0040
5512- 59031/ 07 1500 0.0 0.0046 •
5532- 59082 ✓ 08 1800 22.2 0.0043
5512- 59093 7 09 3.300 0.0 0.0048
5512- 59084 / 10 Itee 0.0 0.0048
j
5512- 59035 V 11 1600 0.0 0.0048 `
5512- 59086 (~ 3.2 1500 0.0 0.0046 •
5512- 59087 13 1000 0.0 0.0048
Average- 3.7 0.0048 26
3) Blanks Asbestos Concentration
TEMtt Project it S/am"2 S/ce nam/m^3
5512- 59074 0C - - - - - - - - - Not Analyzed - - - - - - - - -
5512- 59075 01 - - - - - - - - - Not A.-.alyzcd - - - - - - - - -
Average= N A
4) Velue of T - Statistic : N/A
• None detected: concentration equivalent to analytical ser.sitivity assigned.
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Thic test epost rclatce only to the apcei£ic items cited in the analysis.
The analysis wee carried out according to the approved TEN method. The laboratory it in compliance with the quality
specified for the method.
Covcr-scent.
This report must not be used by the client to claim product endorsement by NVLAP or any agency of the U.S.
Michael A. Goryc•i, '<
Analyzed by:
Roman Peysakhov Director of Electron Microscopy
NYC-WTC 000105975
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