80 JOHN STREET; Block: 68 Lot: 33 BIN: 1001115 19-25 Gold Street, 25-27 Platt Street

NYC 9/11 Public Portal Document

+ JI CNVIRONMENTAL CONSULTAN" '- INC. 200, _ , Avenue South, Suite 1106, New York, New . .,'10003 Phone: (212) 420-8119 Fax: (212) 420-6092 WSA Management Project No.: 01-2171 100 Ring Road West ELAP Lab Code: 11029 Analyte: Airbom Particulate Garden City, NY 11530 NIOSH and AIHA Lab Code: 100273 Date Collected: 10/26/01 NVLAP Lab Code: 101953 Date Received: 10/26/01

Site: I PII 1 ,

New York, NY 1 Date Analyzed: 10/30/01

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

1 Ambient! PII North East Room/ On 120 1.00 17C-1 North Side'of Room

2 Ambient/-`._._._._._._._._._._._._._._. PII dear Main Entrance/ Left 120 1.25 17C-2 of Closet

3 Ambient/ 11th Floor/ Elevator Hallway/ On South 120 1.25 17C-3 Side of Hallway

4 Ambient/ 11th Floor/ Elevator Hallway/ On North 120 0.92 17C-4 Side of Hallway

5 Ambient/ 11th Floor/ Pll -West Side 120 0.50 17C-5 Bedroom/ North Wesr-ivaarLrtiset---

6 Ambient/ 11th Floor/ PII_. _.;East Side 120 0.67 17C-6 Bedroom/ North West Side Near Door

7 FIELD BLANK <0.1/ mg/Filter 17C-7

Sample Analysis 6v PLOD = Performance limit of detection, which is 0.2 mg/ air volume (1). Analytical Balance

Method of Sample Preparation and Analvsjs. 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-2000S, with resolution at 0.01 mg.

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

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