Fiberglass clearance results fax, 125 Liberty Street, Oct 2002

NYC 9/11 Public Portal Document

10/11/2002 16:56 FAX 212 353 8306 ATC IQ 006!007

Attn: Benjamin Sallemi Received: 10/9/02 800:00 AM ATC Associates Inc. ATC Group #• 8946 104 East 25th Street Analysis Date: 10/10/02 New York NY 10010 Fax: (212) 353-3599 Phone: (212) 353-8250 Project: DEP Clean-up ATC Project #: 22906-0002 125 Cedar Street, New York, NY

Asbestos Fiber analysis by Transmission Electron Microscopy via NIOS.H Method 7402 Non Asbestos 7402 Adjusted Asberros PCK Aslestos Asbestos % of (TRM) Sample Volume Fibers FYc. Type(s) Fibers total F/ee .Noss

A-6S-39 3830,00 10 0.001 CHRYSOTILE 1 9 0.0001 Ce''.iose • 7 3:ru tturps, Gypsum. • 3 3tructuras 8946 -36

A-6S-39 3820.00 6 0.001 Nona Detected .0 6 0.0013 Ceiiuloae -1 Structure. Gy36u•n • 3 Structures, 8946 -JS +~sz 2 Structures

A-6S-40— 3810.00 10 0.002 CHRYSOTILE 17 0.0003 Cellulose - 3 Structures, Gypsum -2 8946 -40 Structures, Glass -5 Structures

A-41 3800.00 12 0001 CHRYSOTIL6 1 8 0.0001 Cellulose -4 Structures, Gypsum 3 8941. -41 S:vaures, Glass - 5 Suucures

042 3790.00 7 0.002 t one Detected 0 0 <0.Q03 Cellulose - 3 Structures, Gypsum - 2 8946 .42 - Stt ct,ras, Glass -2 Structures

A-43 3800.00 11 0.001 None Detected 0 0 <0.0013 Cellulose - 7 Structures. Gypsum -1 Structure, 8946 -43 Mess -3 Structures

3800.00 15 0.002 CHFYSOTIL5 1 6 00001 Cellulose - 12 Structures, Gypsum - 2 6946 -44 Strur res, Glass • 1 Structure

A-45 3800.00 16 0.002 Ncne Detected 0 0 <0.0013 CeWtose- 7 Structures, Gypsum - 8 8946 -45 Structures, Glass. 1 Structure

A-46 3790.00 18 0.00; None Detected ) 0 <0,0013 Celubse - 9 Structures, Gypsum - 8 6946 -4d Structures, Glass -1 Structure

A-47 3800.00 13 0.001 None Detected 0 0 <0.0013 Cellulose -10 Structures, Gypsum 2 8946 -41 Structures, Glass • 1 Strucu.,re

MARK PEYSAKHOV MTCHAEL A. GORYCKI. Ph.D.

Analyzed byO Approved by.

ATC is nor rasponsihie (or data reported it flbtrslcc, which is dependent on volume collected b4 ron-laboratory personnel. The above rapert relatat only to (he items tested. This report may not be reproduced, except in full, without wrhten approval by ATC Aaseciates Inc. Analysis performed try ATC Associates Inc (NY ELAF #10879). Forty Grid Openings from eactt of the samples were examinee roe structures greate' than SNIn isrgt? and widths beNreer. 0.261; and 3j. air, having a length40.wrdtn ratic greatef than 3:1

Pape .5 of 6

NYC-WTC 000107501