PCM Air Sample Analysis Summary for WTC, March 2002

NYC 9/11 Public Portal Document

^^^enata Services, Inc. onsulting 304 Edgemont Terrace Teaneck NJ 07666 201 692 7967 fax 201 678 1789

Certificate of Analysis Client: Riverpoint, Inc Project Location: WTC, NYC Analysis Date: March 31,2002 Client#: 101171 Work Area: N/A RCS Project #276

PCM Air Sample Analysis Summary Lab ID Client ID Sample Description Date Flow Rate Duration Volume Fibers Fields Density Fiber Cone. LOD Collected fliters/min.l [minutes! [litersl |Fibcr/mm^l [Fiber/ccl fFiber/ccl 6228 010331 Park Place and Church 3/31/02 14.30 45 643.5 7.00 100 8.92 0.005 0.004 6229 020331 Park Place and Greenwich 3/31/02 14.30 45 643.5 3.00 100 3.82 <LOD 0.004 6230 030331 Murray and Church_________________ 3/31/02 14.30 45 643.5 7.00 100 8.92 0.005 0.004 6231 040331 Murray and Greenwich______________ 3/31/02 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 6232 050331 Fulton and Church 3/31/02 14.30 45 643.5 2.00 100 2.55 <LOD 0.004 6215 060331 Warren and North End 3/31/02 14.70 45 661.5 5.00 100 6.37 <LOD 0.004 6216 070331 West Street and Warren 3/31/02 14.70 45 661.5 ' 6.50 100 8.28 0.005 0.004 6222 080331 Gateway Plaza____________________ 3/31/02 15.00 45 675.0 0.00 100 0.00 <LOD 0.004 6223 090331 South End Avenue and Albany________ 3/31/02 15.00 45 675.0 3.00 100 3.82 <LOD 0.004 6224 100331 West and Albany__________________ 3/31/02 15.00 45 675.0 1.00 100 1.27 <LOD 0.004 6225 110331 Rector Place by park_______________ 3/31/02 14.70 45 661.5 4.00 100 5.10 <LOD 0.004 6226 120331 3rd Place and South End and Waterside 3/31/02 15.00 45 675.0 2.00 100 2.55 <LOD 0.004 6227 130331 West end of West Thames__________ 3/31/02 15.00 45 675.0 8.00 100 10.19 0.006 0.004 6217 140331 Park Place and River Terrace 3/31/02 14.70 45 661.5 1.00 100 1.27 <LOD 0.004 6218 150331 River Terrace and Chambers 3/31/02 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 6219 160331 River Terrace and Warren 3/31/02 14.45 45 650.3 4.00 100 5.10 <LOD 0.004 6220 170331 North End and Park Place___________ 3/31/02 14.70 45 661.5 1.00 100 1.27 <LOD 0.004 6221 180331 Vesey and River Terrace____________ 3/31/02 14.70 45 661.5 1.00 100 1.27 <LOD 0.004 6233 190331 Trinity Place and Thames___________ 3/31/02 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 6234 200331 Vesey and West Broadway__________ 3/31/02 14.05 45 632.3 5.00 100 6.37 <LOD 0.004 6235 FBI Field Blank 3/31/02 0.00 0 0.0 0.00 100 0.00 N/A N/A 6236 FB2 Field Blank 3/31/02 0.00 0 0.0 0.00 100 0.00 N/A N/A

ELAP ID No. 11750 Expires 12:01 AM, June 15,2002 Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 Limit of Quantitation (LOQ) =102 [Fiber/mm’] Limit of Detection (LOD) = 7 [Fiber/mm"]

Analysis Performed By: XU (X/4 Marek Pawlik Laboratory Director

NYC-WTC_000161867