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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 air monitoring at 345 South End

Machine-extracted title · confidence 95%

Record documenting the transfer and custody of air samples from Building #100 at 345 South End Avenue collected on October 22, 2001.

NYC-WTC_000120991–000121041

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 Cast 25th Street New York, New York 10010

VTC www.atc-enwro corn 212.353.8280 Fax 212.253.8308

A5SOC I ATES I NC.

September 26, 2001

ALC Environt..antal W • 3 0th ' s vs Attn: Mr.

.~: Report cf TEN : iysis

Dear Mr. microscopy (TEN) Following are the results of rya m~.~sion electron PCM as:_' s:"r~ples from our Group No. 5556: ana.,vsis of eleven

Client •"'n- ,rte•

Project Name: 345 and 355 Southend Avenue and 200 Location: Hallways and Apartments, Buildings 100 Samples received in TEN Lab: 09/26/01 transmitted to you These results will confirm and document the data with the in strict conformance today. The analyses were performed August 15, 1994. methodology of the NICSH method 7402, Issue 2,

samples were examined at Forty grid openings from each of the 1,000X and 10,000X) relatively low magnifications (approximately between 0.25um than 5um in length and widths for structures greater greater than 3.1. ratio and 3uta, ai.d having a length-to-width observed by PCM large enough to be These structures would be were detected in analysis. Asbestos and non -asbestos structures the samples in the following proportions:

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

3 0.0% 93.8°% 0.0% 6.2% 0.0 4 77.8'% 0.0% 0.0% 0.005 22.2% S 0.0% 76.9% 0.0% 23.1% 0.0 6 0.0% 55.0% 0.0% 45.0% 0.0 76.2% 9.5% 14.3% 0.0 8 0.0% 77.3% 9.1% 13.6% 0.0 13 0.0% 100.0% 0.0% 0.0% 0.0 14 0.0% 100.0% 0.0% 0.0% 0.0 17 0.0% 0.001 3.6% 68.7% 0.0% 27.7% 16 33.3% Q.0 19 0.0% 66.7% 0.0% 42.0% 0.0% 58.0" 0.0 20 0.0%

NYC-WTC 000121000

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NYC-WTC_000121000Source: NYC Law Department, mirrored locally

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NYC-WTC_000120940 · Box DEP Box 48

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

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