Environmental assessment request letter, February 2002

NYC 9/11 Public Portal Document

02/20/2002 09:15 FAX IM040 JLC ENVIRONMENTAL CONSULTANTS. INC. 200 Park Avehue South, Suite 1001, New York, New York 10003 Phone: (212) 420-6119 Fak: (212) 420-6092 The Renelesance Project No.: 01.2226 c/c Insignia Residehttal Group, Inc, ELM' Lab Code: 11028 Analyte: FIBERS 100 John Street NIOSH and AIHA Lab Code; 100273 Now York, NY 10038 Date Received: 12ASMI NVLAP i 1o1ee3 Date Analyzed: 1214101 SUMMARY OF ANALYTICAL RESULTS - PCM Batch#: 0112A$49 Site: 100 John Sfit~et, New York, NY [

SAMPLE # COLLECTED DESCRIPTION I LOCATION LAB # TIME(min) VOLUNIE(L) FI81FtELD RM$ULTt3(flrx)

007 Ambient! 24th Floor/ East Side of Corridor/ Near 04-December 250 2004 2/100 <ooalaLOD Apaltrrlentti PII - A 9870

008 _Ambient/ 34th Floor! East Side of Corridor/ Near 04•December 250 2004 2/100 &0,001<1.OD . . . . . . .!. II ........ A 9571

009 FIELD BLANK 04-December 0/100 A 9572

010 FIELD BLANK 04-December 0/100 A 9573

Sample Analysis : 'CLOD - t esa than limit of detection which is 5.5 Flbere1100 Fields Positive Phase Contrast Microscopy (PCM) VOID1 : H.C.P. (t h Concentration of Particles) VOib2 R Overloaded All samples analyzed In accordance with the NIOSH 7400 Method using "A" Counting Rules. Issue 2, August 1984 Ina rUmentatton; ~ ~. Olympus PCM Model SH-2 with Walton•Beckett aratieule (100urn field W diameter). Laboratory Director Report Date: December 5, 2001 JLC Is responsible for only the fiber counts within the limitations of the method described as NIOSH 7400. gives only an Index of airborne fibers and provides only an estimate of asbestos concentration. Any and all Among other limitations, this meth these samples are limited In recovery to the cost of claims arising out of JLC's analyst the above. analyzing samples. JLC accept& no other nubility and the cUent agrees to seeK no costs b Page 4 of 4 Ltd NYC-WTC 000123837