Environmental assessment request letter, February 2002

NYC 9/11 Public Portal Document

02/20/2002 09:28 FAX 11063 JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone: (212) 420-8119 Fax; (212) 420-6092

Mazal Group LLC (100 John Street) Project No.; 01-2994 FLAP Lob Code: 11029 Analyte: One West Street FIBERS NIOSH and AIHA Lab Code: 100273 Date Received: New York, NY 10004 9PZ0l01 NVLAP Lab Code: 101953 Date Analyzed; 9/20!01 SUMMARY OF ANALYTICAL RESULTS _ PCM Batch#: 0109A843

Site: 100 John Street, New York, NY

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

001 Ambient! Lobby/ 0 Entrance Doors 19September 60 923 8/100 0.004 A 6318

002 Ambient/ Lobby/ In Lounge Area 19-September 60 923 5/100 &003<LOD A 6319

003 Ambient/ Apartment € P I I ~ Kltchent Living Room 70 I9.September Area .- 1077 7/100 0.003 A 8320

004 Ambient/ 20th Floor/ Hallway 70 19-September 1077 4/100 0.002LOD A 6321

005 Ambient/ 29th Floor! Hallway 70 1077 19-September 8!100 0.004 A 6322

006 Ambient! Apartment #L.j1!J Foyer Area 60 923 41100 18-September 0.002<LOD A 8323

Sample Analysis by; 40D° Less than limit of detection which Is 5.5 Fibers! 100 Fields Positive Phase Contrast Microscopy (PCM) VOIb1 a H.C.P. ( High Concentration of Partlefas) VOID2 = OYerloaded

All samples analyzed In accordance with the NIOSlt 7400 Method using "A" Counting Rules. Issue 2, August 1994 instrumentation: ,..i~ Olympus PCM Model BH-2 with Walton-Beckett Gratioule (100um field diameter), Laboratory Director Report Date: December 11, 2001 JLC is responsible for only the fiber counts Within the limitations of the method described gives only an Index of alrbomo liars and provides only an estimate of asbestos as NIOSI4 7400. Among other limitations, this meth these samples are limited In recovery to the coat of anatyxIng samples. JLC aaceptaeonoentratlon. Any and aG claims arising cut of JLC's analyst no ether liability Cm l the aGont agrees to seek no baths V the above. Page 1 of 8

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