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: April 1, 2002 Client#: 101171 Work Area: N/A RCS Project #277

PCM Air Sample Analysis Summary Lab ID Client ID Sample Description Date Flow Rate Duration Volume Fibers Fields Density Fiber Cone. LOD Collected [liters/min.] [minutes] [liters] [Fiber/mm^] [Fiber/cc] [Fiber/cc] 6250 010401 Park Place and Church 4/1/02 14.05 45 632.3 11.00 100 14.01 0.009 0.004 6251 020401 Park Place and Greenwich 4/1/02 14.30 45 643.5 7.00 100 8.92 0.005 0.004 6252 030401 Murray and Church_________________ 4/1/02 14.05 45 632.3 8.00 100 10.19 0.006 0.004 6253 040401 Murray and Greenwich______________ 4/1/02 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 6254 050401 Fulton and Church 4/1/02 14.30 45 643.5 3.00 100 3.82 <LOD 0.004 6237 060401 Warren and North End 4/1/02 14.45 45 650.3 3.00 100 3.82 <LOD 0.004 6238 070401 West Street and Warren 4/1/02 14.45 45 650.3 1.00 100 1.27 <LOD 0.004 6244 080401 Gateway Plaza 4/1/02 15.00 45 675.0 2.00 100 2.55 <LOD 0.004 6245 090401 South End Avenue and Albany________ 4/1/02 15.00 45 675.0 5.00 100 6.37 <LOD 0.004 6246 100401 West and Albany__________________ 4/1/02 15.00 45 675.0 8.00 100 10.19 0.006 0.004 6247 110401 Rector Place by park_______________ 4/1/02 15.00 45 675.0 5.00 100 6.37 <LOD 0.004 6248 120401 3rd Place and South End and Waterside 4/1/02 15.00 45 675.0 2.00 100 2.55 <LOD 0.004 6249 130401 West end of West Thames 4/1/02 15.00 45 675.0 4.00 100 5.10 <LOD 0.004 6239 140401 Park Place and River Terrace 4/1/02 14.70 45 661.5 0.00 100 0.00 <LOD 0.004 6240 150401 River Terrace and Chambers 4/1/02 14.70 45 661.5 2.00 100 2.55 <LOD 0.004 6241 160401 River Terrace and Warren 4/1/02 14.70 45 661.5 1.00 100 1.27 <LOD 0.004 6242 170401 North End and Park Place 4/1/02 14.70 45 661.5 7.00 100 8.92 0.005 0.004 6243 180401 Vesey and River Terrace____________ 4/1/02 14.45 45 650.3 5.00 100 6.37 <LOD 0.004 6255 190401 Trinity Place and Thames____________ 4/1/02 14.30 45 643.5 10.00 100 12.74 0.008 0.004 6256 200401 Vesey and West Broadway__________ 4/1/02 14.30 45 643.5 5.00 100 6.37 <LOD 0.004 6257 FBI Field Blank 4/1/02 0.00 0 0.0 0.00 100 0.00 N/A N/A 6258 FB2 Field Blank 4/1/02 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: (ktUf Marek Pawlik Laboratory Director

NYC-WTC_000161868