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NYC-WTC_000220385

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NYC 9/11 Public Portal Document

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ENVIRONMENTAL CONSULTANTS, INC October 30, 2001

Mr. Fred Oliver WSA Management 100 Ring Road West Garden City, NY 11530

Attention: Mr. Fred Oliver

Reference: Dust Sampling Analysis for 80 John Street, New York, NY

Dear Mr. Oliver:

Enclosed please find the analytical results for nuisance dust sampling conducted at 80 John Street, New York, NY.

All samples were collected and analyzed by JLC Environmental Consultants, Inc. (JLC) at the request of WSA Management.

After their arrival, samples were individually prepared and tested for airborne particulates. When the samples arrived they were prepared by weighting the filters in the environmental balance chamber following the National Institute of Occupational Safety and Health (NIOSH) method 0500.

The samples analyzed were well below the Occupational Safety and Health Administration (OSHA) recommended limit of 15 mg/m^ and the American Conference of Governmental Industrial Hygienist (ACGIH) standards of 10 mg/m^.

JLC appreciates the opportunity to serve you. Please contact us with any further questions at (212) 420-8119. Thank you.

Sincerely, JLC Environmental Consultants, Inc.

-ftT Gulam Machhiwala Laboratory Director

cc: File: 01-2171

200 Park Ave South, Suite 1001 New York, New York 10003 • Tel: (212) 420-8119 • Fax; (212) 420-6092 CITY_21MC100_003796876

NYC-WTC_000220385

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NYC-WTC_000220385Source: NYC Law Department, mirrored locally

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