Environmental assessment request letter, February 2002

NYC 9/11 Public Portal Document

02/20/2002 09:29 FAX I 088 JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park Avenue South, Suite 1001, New York, New York 10003 Phone; (212) 420-8118 Fax: (212) 420-6092 Project No.: 01- Mazal Group LLC (100 John Street) ELAP Lab Code: 11029 Anelyte: F18ERS One West Street NIOSH and ALMA Lab Code. 100273 Date Received: 9120101 Now York, NY 10004 NVLAP Lab Code: 101983 Date Analyzed: 9/20101 SUMMARY OF ANALYTICAL RESULTS - PCM i9ataf 9105A643 #' Site: 100 John Street New York, NY L.

SAMPLE# COLLECTED DESCWP rION I LOCATION LAB# TIMF(min) VOLUME(L) FI®IFIELD RESULTS(f/nc)

019 Ambient' 28th Floor/ Hallway 80 19"September 923 4/100 o.g02<LOD A 6336

020 Ambient' Apartment 1 Pi!. ji Foyer/ Living Room 19-September 60 923 3/100 0002<LOD Area A 6337

021 Ambient/ 25111 Floor/ Hallway 60 19-September 923 65/100 X35 A tt38

022 Ambient' Apartment #~ _PII _;Foyer Area 60 923 19-September 11/100 0.009 A 6339

023 Ambient/ 24th Floor/ Hallway 60 19-September 923 5/100 <LQD 0.003 A 6340

024 Ambient' Apartment #i ._._._._._. p11 Foyer/ Living Room 60 923 14/100 19-September Area X007 A 6341

Same Analysis by: <LOD - Leas than limit of detection which Is 8,8 Flbers/ 100 Fields Positive Phase Contrast Microscopy (PCM) VOIDI a H.C.P. ( High Concentration of Particles) V0102 = Overloaded Method of Sampla Precaratlor and Analysis: All samples analyzed in accordance with the NIOSIH 7400 Method using "A" Counting Rules. Issue 2, August 1994 Instrumentation: }L>, Olympus PCM Model 9H-2wlth V' Icon-Beokett Gretloule (100um field diameter). m Laboratory Director Report Date: December 11, 2001 JLC is responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. Among other tknitations, this math gives only an Index of airborne fibers and provides only an estimate of asbestos these samples are limited In recovery to the cost of analyzing samples. JLC acceptsconeantration. Any and all claims arising out of JLC's analyst no other Liability and the client agrees to seek no Costs b the above. Page 4 of 8

NYC-WTC 000123863