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

NYC 9/11 Public Portal Document

DEC.14.2001 12:39PM JLC ENVIRONMENTAL NO.449 P.9 A ; • ENVIRONMENTAL CONSULTAN . . INC. 200 Park Avenue South, Suite 1106, New York, New York 10003 Phone: (212) 420-8119 Fax: (212) 420-6092 WSA Management Protect No.: 01-2240 100 Ring Road West ELAP Lab Code: 11029 Anetyte: Ahbom Particulate Garden City, NY 11530 NIOSH and AIHA Lab Code: 100273 Date Collected: 12/13/01 NVLAP Lab Code: 101953 Date Received: 12113/01 Date Analyzed: 12/13/01 Site: PI1 _ _ _._ _ New York, NY :':i:.

Summary of Analytical _I] Y Results - Particulates (Dust) SAMPLE # LOCATION I DESCRIPTION VOLUME PLOD • CONCENTRATION ' LAB# (mg/m3) (mglm3)

08 Ambient/ 12th Floor! Apartment[ P11 North East 120 1.108 224008 Room/ South Wall Near Door

09 FIELD BLANK <0.01/ mg/ Fitter 224009

10 FIELD BLANK I <0.01/ mgfFilter 224010 '

~plp on3lYQa hv' PLOD - Performance limit of detection, which is 0.2 mg/ air volume (I), : a Analytical Balance Method of Sam )rIa Preosration and Analysis All samples were prepared and analyzed in accordance with the National Institute of Occupational Safety and Health (NIOSH) Method 0500 02115/84. Inshvmentatton- Denver A-2000S, 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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