Environmental assessment request letter, February 2002

NYC 9/11 Public Portal Document

02/20/2002 09:18 FAX lI 045 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.: 01-2226 The Renaissance ELAP Lab Code: 11028 o/o Insignia Residential Group. Inc. Analyse; FIBERS 100 John Street NIOSH and AIWA Lab Code: 100273 Date Received. 12/10/01 New York, NY 10038 NVLAP Lab Code; 101953 Date Analyzed: ¶2/10/Of SUMMARY OF ANALYTICAL RESULTS - PCM B '* 9112AW

Site: 100 John Street, New York, NY

SAMPLE C COLLECTED DESCRIPTION I LOCATION TIME(min) VOLUME(L) FIBIPIELD RESULTS(f/cc) LABB

001 Ambient! Indoor! PCM/ Between Big Picture and 268 2219.04 4!100 c0.00j 07-December Sofa Lamp! Lobby A 9722

002 Ambient! indoor/ PCM/ Middle Right Side Wald 266 2202.48 51100 0.001 07-December Between Apartment;_._._._._Pi! 96th Floor A 9723

003 Ambient! Indoor! PCM! Front Apartment L._P11 _ 264 2185.92 41100 <0 00 07-December 24th Floor A 9724

004 Am_b_i_e_nt/ Indoor! PCM! Between Elevator 3 and 258 2119.68 6!100 0.001 07-December 4 _._._._._._._._._._._._. PII A 9726

005 Ambient! Indoor! PCM/ Piano Room/ Entrance 263 2177.64 7/100 0.002 07-December Lobby A 9725

006 Indoor/ PCM! Middle Left Side Wall! Ambient! Apartment_. 260 2152.80 3/100 <0.001 07-Deoernber Between _._._._Pii ;16th Floor A 9727 1

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Sample Anelysis b . cLOD a Lass than limit of detection wtuch is 5.6 Fibers! 100 Fields Positive Phase Contrast Microscopy (PCM) VOID1 m H.C.P. (High Concentration of Particles) V01D2 a Overloaded

All samples analyzed in accordance with the NIOSH 7400 Method using "A" Counting Rules. laws 2 August 1994 Instrumentation. Olympus PCM Model BH-2 with Walton-Beckett Graticule (100um field diameter). Gulam Machhiwela Laboratory Director Report Date: December 10, 2001 JLC is responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. Among other limitations, this macho gives only an index of airborne flies and provides only an estimate of asbestos concentration. Any and all claims arising out of JLCs these samples are limited in racovory to the coat of analyzing samples. JLC accepts no other liability and the client agrees b seek no analyst: costa bt the above. Pace 9 of 10

NYC-WTC 000123842