Document page fragment, DEP Box 54, 2003

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

* s 7 Junction Blvd. 1hing, NY 11373 NIOSH and AIHA Lab Code: 100273 NVLAP Lab Code: 101953 Date Received: 4/1/2003 Date Analyzed: 4/1/2003 Batch #: SUMMARY OF ANALYTICAL RESULTS - PCM 0304A707

Site: L 114 Liberty Street, New York, NY

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

001 During/ Liberty Street Entrance/ Outside Work 600 3643 14/100 01-April 0.0019 Area A 9906

002 During/ Inside Clean Room of Decon/ Liberty 600 3643 15/100 01-April 0.0020 Street Entrance A 9907

003 During/ Cedar Street Entrance/ Outside Work Area 600 3643 11/100 01-April 0.0015 A 9908

During/ Cedar Street Entrance/ Inside Work Area 600 3643 11/100 0.0015 01 -M April A 9909

005 During/ Cedar Street Decon/ Inside the Clean 600 3643 9/100 01-April 0.0012 Room A 9910

006 FIELD BLANK 01100 01-April A 9911

Sample Analysis by: CLOD = Less than limit of detection which is 5.5 Fibers/ 100 Fields Positive Phase Contrast Microscopy (PCM) VOIDI = H.C.P. (High Concentration of Particles) VOID2 = Overloaded Method of Sample Preparation and Analvsls• All samples analyzed in accordance with the NIOSH 7400 Method using 'A" Counting Rules. Issue A t 1994 Instrumentation: ~„~~-~—^~ Olympus PCM Model 31-1-2 with Walton-Beckett Graticule (100um field diameter). Gul Machhiwala Laboratory Director

• Report Date: C is responsible for only the fiber counts within the limitations of the method described as NIOSH method gives only an Index of airborne fibers and provides only an estimate of asbestos April 22, 2003 7400. Among other limitations, this concentration. Any and all 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 53 of 60

NYC-WTC 000132074