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← Document results/DEP Box 48/345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083377 345 South End Avenue, Building #100
Document / 51 pages

Chain of custody for bulk sampling at 345 South End

Machine-extracted title · confidence 95%

Document tracking environmental samples collected from Building #100 at 345 South End Avenue on October 22, 2001.

NYC-WTC_000120940–000120990

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083377 345 South End Avenue, Building #100

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NYC 9/11 Public Portal Document

104 East 25th Street New York. NCw York 10010 www.atc•enviro corn 212.353.8280 Fax 212.353.8308

S 1 MC. A S S O C I A T E

September 26, 2001

ALC EnvirOnt. antaa w. 30rh c `rO= Attn: Mr. a,e: Report c_` TEM Lyeis

Dear Mr. (TEM) Following are the results of % m'. eion electron microscopy from our Group No. 5556: ana.,vsis of eleven PCM a':_ s'-rPies

•"-^-.ter " Client Southend Avenue Project Name: 345 and 355 Buildings 100 and 200 Location: Hallways and Apartments, 09/26/01 Samples received in TEM L,ab: you document the data transmitted to These results will confirm and conformance with the performed in strict today. The analyses were 7402, Issue 2, August 15, 1994. methodology of the NICSH method at of the samples were examined Forty grid openings from each(approximately 1,000X and 10,000X) relatively low magnifications 0.25um in length and widths between for structures greater than Sum greater than 3:1. -to -width ratio and 3uia, az.d having a length to be observed by PCM large enough These structures would be ztr:ctures were detected in analysis. Asbestos and non-asbestos proportions: the samples in the following

sample chrysotile gypsum cellulose fiber glass F/CC as Asbestos • number

0.0% 6.2% 0.0 3 0.0% 93.8•'1 0.0% 0.0% 0.005 4 22.2% 77.8% 76.9% 0.00 23.1% 0.0 5 0.0% 6 0.0: 55.0% 0 . 0% 45.0% 0.0 76.2% 9.5% 14.3% 0.0 8 0.0% 0.0 13 0.0% 77.3% 9.1% 13.6% 0.0 14 0.0% 100.0% 0.0% 0.0% 0.0% 100.0'% 0.0% 0.0% C.0 17 0.0% 27.7% 0.001 3.6% 68.7% 33.3°% 0.0 19 20 0.0% 0.0% 66.7% 42.0% 0.0% 0.00 58.0% 0.0

NYC-WTC 000120949

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NYC-WTC_000120949Source: NYC Law Department, mirrored locally

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