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Invoice for asbestos sample analysis, 44 Wall Street

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Invoice detailing billing for bulk and air sample analysis results including PLM, PCM, and TEM testing at 44 Wall Street.

NYC-WTC_000094912–000095002

Folder label: “44 WALL STREET Block: 43 Lot: 1

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NYC 9/11 Public Portal Document

Hillmann Environmental Group, LLC

V. Combustible Gasses (LEL) concentrations were analyzed using a Rae Systems Multi-Rae Four Gas meter that has a 0-100% range and a limit of detection of 1.0%.

VI. Airborne Asbestos concentrations are determined by drawing air through a 25 mm TEM cassette, for a minimum of 1300 Liters. The samples are then analyzed by Transmission Electron Microscopy, conducted by an appropriately accredited laboratory, in accordance with NIOSH Method 7402. 10% of the samples analyzed by PCM are also analyzed by TEM. The 10% are selected at random.

VII. Bulk samples were collected following EPA recommended sample collection procedures.

Cushman & Wakefield/ 44 Wall Street, New York, NY/Project Number N3-7476 Page 4

NYC-WTC 000094936

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NYC-WTC_000094936Source: NYC Law Department, mirrored locally

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