NYC-WTC_000220386

NYC 9/11 Public Portal Document

. ENVIRONMENTAL CONSULTAN I INC. 200 F...K Avenue South, Suite 1106, New York, New York 10003 Phone: (212) 420-8119 Fax: (212) 420-6092 Project No.: 01-2214 • WSA Management ELAP Lab Code: 11029 Analyte: AIrbom Particulate 100 Ring Road West NIOSH and AIHA Lab Code: 100273 Date Collected: 11/16/01 Garden City, NY 11530 Date Received: 11/16/01 NVLAP Lab Code: 101953 Date Analyzed: 11/16/01

Site: 80 John Street, New York, NY

Summary of Analytical Results SAMPLE# LOCATION / DESCRIPTION VOLUME PLOD* CONCENTRATION LAB# { mg / m3 ) ( mg / m3 )

1 Ambient/ Sth Floor/ Apartment 8-1/ South Section/ 120 0.58 1116-01 Bedroom Door (On West)

2 Ambient/ Sth Floor/ Apartment 8-1/ North Section/ 120 0.42 1116-02 Living Room/ North West Door

3 Ambient/ Sth Floor/ Corridor/ North End of Corridor 120 0.92 1116-03 with North Wall

4 Ambient/ Sth Floor/ Corridor/ South End of Corridor 120 0.75 1116-04 with South Wall

5 Ambient/ 22nd Floor/ Apartment 22-/V South Side 120 0.50 1116-05 Living Room/ In the Middle of South Wall

6 Ambient/ 22nd Floor/ Apartment 22-/V North East 120 0.08 1116-06 Room/ On West Side Near Door

7 FIELD BLANK <0.01/ Filter 1116-07

* PLOD = Performance limit of detection, which Is 0.2 mg/ air volume (I). Sample Analysis by: Analytical Balance

Method of Sample Preparation and Analysis All samples were prepared and analyzed in accordance with the National Institute of Occupational Safety and Health (NIOSH) Method 0500 02/15/84.

Instrumentation: Denver A-200DS, with resolution at 0.01 mg.

Gulam Machhiwala Laboratory Director OSHA Permissible Exposure Limit (PEL) for total Nuisance Dust is 5 mg/m3

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NYC-WTC_000220386