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← Document results/DEP Box 02/345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083378
Document / 123 pages

Chain of custody for environmental assessment, Nov 2001

Machine-extracted title · confidence 90%

Chain of custody form documenting bulk sampling and air monitoring at 375 South End Avenue on November 17, 2001.

NYC-WTC_000095331–000095453

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083378

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NYC 9/11 Public Portal Document 3 L sr Leer New York. New York 10010 9~tVY."iJ V• 4c^s': jl`.•^:^t?: .iC~.js www.BtC-envira.com 212.353 8280 Fax 212.353.8306

A S S O CA I A T e S I N C

September 27, 2001

ALC Environmental 115 W. 30th Street New York, NY 10001 Attn: Mr.

Re: Report of TEM Analysis

Dear Mr. transmission electron microscopy (TM) Following are the results of our Group No. 5569: analysis of two PCM air samples from

Client: Mid -State Project Name: 375 Southend Avenue Location: Apartments 3L and 3H, Building 400 Samples received in TEM Lab: 09/27/01 data transmitted to you These results will confirm and document the conformance with the performed in strict today. The analyses were August 15, 1994. Issue 2, methodology of the NIOSP method 7402,

the samples were examined at. Forty grid openings from each of magnifications (approximately 1,000X and 10,000X) relatively low 0.25um and widths between for structures greater than Sum in length ratio greater than 3:1. and 3um, and having a length -to -width These structures would be large enough to be observed by PCM the samples in analysis. Non-asbestos structures were detected in the following proportions:

sample gypsum cellulose F/CC as number Asbestos

0.0% 100.0% 0.0 11 55.7% 44.3% 0.0 12

0.01 F/CC as asbestos. As a consequence, no sample exceeds Michael A. Gorycki, Director of The analyses were supervised by Dr. Electron Microscopy. These analyses were performed by ATC d/b/a ATC Associates Inc. This report may be reproduced only in its this laboratory. entirety and not without prior permission of

NYC-WTC 000095342

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NYC-WTC_000095342Source: NYC Law Department, mirrored locally

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NYC-WTC_000121462 · Box DEP Box 48

Record documenting the transfer and custody of air samples from Building #500 at 385 South End Avenue collected on October 22, 2001.

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