NYC-WTC_000220455

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.' 01-2089004 Rose Associates Inc. ELAP Lab Code; 11029 Analyte. FIBERS 200 Madison Ave. 5th Floor NIOSH and AIHA Lab Code: 100273 Date Received; 10/25/2001 New York, NY 10016 NVLAP Lab Code' 101953 Date Analyzed; 10/25/2001 Batch#; 0110A824 SUMMARY OF ANALYTICAL RESULTS Site: 21 West Street, New York, NY

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

025 FIELD BLANK 0/100 24-October A 8328

026 FIELD BLANK 0/100 24-October A 8329

Sample Analysis by: <LOD = Less than limit of detection which is 5.5 Fibers/ 100 Fields VOID1 = H.C.P. ( High Concentration of Particles) Positive Phase Contrast Microscopy (PCM) VOID2 = 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: Olympus PCM Model BH-2 with Walton-Beckett Graticule (lOOum field diameter). Laboratory Director Report Date: Novembers, 2001 JLC is responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. Among other limitations, this metho gives only an index of airborne fibers and provides only an estimate of asbestos concentration Any and all claims arising oH of JLC's analysis 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 bi the above. Page 5 of 5

CITY_21MC100_002388970

NYC-WTC_000220459