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← Document results/DEP Box 48/345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083376 385 South End Avenue, Building #500
Document / 53 pages

Chain of custody for air monitoring at 385 South End

Machine-extracted title · confidence 95%

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

NYC-WTC_000121462–000121514

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: 1083376 385 South End Avenue, Building #500

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NYC 9/11 Public Portal Document

NCOR E IENVIRONMENTAL O The First Choice for Environmental Testing & Consulting

October 22. 2001

Gateway Plaza Management Corporation 375 South End Avenue New York, New York 10280

Subject: Gateway Plaza Building #500

Gentlemen:

ALC Environmental Incorporated (ALC) has been retained to perform bulk sampling, visual assessments & air monitoring according to the EPA Protocol to determine the presence of asbestos at the above referenced project. Every apartment in the building was assessed by our inspectors for dust and debris. Any area where visible dust and debris was found, ALC's inspectors took a bulk sample, which was then sent to a third party independent laboratory for analysis. In most cases there was insufficient debris to sample and a visual assessment only was performed. Additionally, air sampling was performed using TEM Methodology on every floor in the building.

Eight (8) initial background air samples were collected and analyzed at building 500. Eight (8) were analyzed via phase contrast microscopy (PCM) and four (4) were analyzed via transmission electron microscopy (TEM). After analysis via TEM, all were below the permissible limits.

Based on EPA Guidelines, we collected forty-six (46) bulk samples and analyzed them via Polarized Light Microscopy (PLM) Methodology. Zero 0 were found to be above the regulatory limits

ALC then collected air samples on every floor in the building. The air sampling and analysis was done utilizing applicable Federal, State and City Regulations pertaining to asbestos to include Federal OSHA (29 CFR 1926.58) EPA NESHAPS (40 CFR PART 61), AND TSCA TITLE II AHERA/ASHARA (40 CFR PART 763) Asbestos Regulations; the New York State Department of Labor Industrial Code Rule 56 and the New York City Department of Environmental Protection Title 15 Asbestos Regulations.

Thirty-five (35) air samples were collected and analyzed via TEM Methodology. The results indicated that the living areas achieved the acceptance criteria below <70 structures per mm2 set by the above regulations.

115 West 30th Street • 11th Floor • New York, New York 10001 • 212.279.1001 • 888.466.3620 • Fax: 212.279.6747 Home Office: The Bellevue • Suite 600 • 200 S. Broad Street • Philadelphia, PA 19102 • 215.732.9499 • 888.789.8378 • Fax: 215.732.9559 www.AI_CEnvi ronniental. cone

NYC-WTC 000121513

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NYC-WTC_000121513Source: NYC Law Department, mirrored locally

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

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