NYC-WTC_000203014

NYC 9/11 Public Portal Document

JLC ENVIRONMENTAL CONSULTANTS. INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone: (212) 420-8119 Fax; (212) 420-6092 Project No.: 03-2744 New York City D.E.P. ELAP Lab Code: 11029 Analyte: FIBERS 59-17 Junction Blvd. NIOSH and AIHA Lab Code: 100273 Date Received: 3/28/03 Flushing. NY 11373 NVLAP Lab Code: 101953 Date Analyzed: 3/28/03

SUMMARY OF ANALYTICAL RESULTS - PCM

Site: 114 Liberty Street, New York, NY I

SAMPLE # COLLECTED DESCRIPTION I LOCATION TIME(min) VOLUME(L) FIB/FIELD RESULTS(f/cc) LAB#

001 During/ OWA/ Liberty Street Sidewalk/ At the 600 3650.4 8/100 0,0011 28-March Entrance A 9434

002 During/ OWA/ Inside Restaurant Towards 600 3650.4 10/100 0 0013 28-March Entrance A 9435

003 During/ OWA/ Clean Room of Personal Decon 600 3650.4 8/100 0.0011 28-March A 9436

004 During/ OWA/ Inside Restaurant/ Near Stairwell 600 3650.4 5/100 0.0007 28-March A 9437

005 During/ OWA/ Clean Room of Personal Decon for 600 3650.4 10/100 0.0013 28-March Basement A 9438

006 FIELD BLANK 0/100 28-March A 9439

Sample Analysis by: <LOD = Less than limit of detection which is 5.5 Fibers/ 100 Fields VOIDI = H.C.P. ( High Concentration of Particles) Positive Phase Contrast Microscopy (PCM) \/OID2 = Overloaded Method of Sample Preparation and Analysis: All samples analyzed in accordance with the NIOSH 7400 Method using "A" Counting Rules. Issue 2, August 1994

Instrumentation Gulanj^achhiwala Olympus PCM Model BH-2 with Walton-Beckett Graticule (100um field diameter). Laboratory Director Report Date; April 1, 2003 JLC IS responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. Among other limitations, this method gives only an index of airborne fibers and provides only an estimate of asbestos concentration Any and ail claims arising out of JLC's analysis of these samples are limited in recovery to the cost of analyzing samples. JLC accepts no other liability and the client agrees to seek no costs beyond the above. Page 43 of 44

CITY_DEP_WORBY_CANNATA_SUBP_000036228

NYC-WTC_000203014