Environmental assessment request letter, February 2002

NYC 9/11 Public Portal Document

02/20/2002 09:14 FAX IM 038

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 YW Renaissance CLAP Lab Code: 11029 Analyte: FIBERS c/o Insignia Residential Group. Inc. 100 John Street NIOSH and AlHA Lab Code; 100273 Date Received: 12/31200 New York, NY 10038 NVLAP Lab Code: 101993 Date Analyzed: 12/41200 SUMMARY OF ANALYTICAL RESULTS - PCM '#. 0112A936 Site: 100 John Street, New York, NY,.

SAMPLE U COLLECTED DESCRIPTION / LOCATION TIME(min) VOLUMB(L) FIB/FIELD RESULTS(Nco) LAB0

007 Ambient! 24th.Floor/ South Wall in Corridor! Near 240 1923.8 61100 .0.002 03-Daosrnber Apartment 0._.PII _. A 9501

008 _Ambigntl4th,Floor/ South Wall in Corridor! Near 223 1787.5 51100 D 03-December P11 A 9502

009 FIELD BLANK 0/100 03-December A 9503

010 FIELD BLANK 0/100 03-December A 9504

Sample Analysis by CLOD a Less than Belt of detection which is 0.5 Fibers! 100 Fields Positive Phase Contrast Mloorosoopy (PCM) V01D1- H.C.P. (High Concentration of Particles) V0102 a Overloaded Mauled of Samole Preparation and Anslysiqj All samples analyzed In accordance with the NIOSH 7400 Methotl using "A" Counting Rules. ue 9 t i964 Instrumentation: Olympus PCM Model BH-2 with Walton-Beckett (iraticule (1Odum field diameter). C 8B Laboratory Director Report Date: December 4, 2001 JLC is responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. Among other gives only an Index of airborne fibers and provides only an estimate of asbestos oonoentrallon, Any and all cl limitation, this meth these samples aims arising out of JLC's snalys are

limited in recovery to the cost of analyzing samples. JLC accepts no other liability and the client agrees to seek no costs b the above. Page 2 of 2

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NYC-WTC 000123835