PCM Air Sample Analysis Summary for WTC, March 2002

NYC 9/11 Public Portal Document

(Z-onsulting Services, Inc. enata 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: Januaiy 23,2002 Client#: 101171 Work Area: N/A RCS Project #201

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^l [Fiber/co] [Fiber/cc] 4666 010123 Park Place and Church 1/23/02 14.80 45 666.0 6.00 100 7.64 0.004 0.004 4667 020123 Park Place and Greenwich 1/23/02 15.00 45 675.0 3.00 100 3.82 <LOD 0.004 4668 030123 Murray and Church_____ 1/23/02 14.80 45 666.0 6.00 100 7.64 0.004 0.004 040123 Murray and Greenwich 1/23/02 14.80 45 666.0 2.00 100 2.55 <LOD 0.004 Fulton and Church 1/23/02 15.00 45 675.0 3.50 100 4.46 <LOD 0.004 Warren and North End 1/23/02 14.60 45 657.0 3.00 100 3.82 <LOD 0.004 4653 070123 West Street and Warren 1/23/02 14.60 45 657.0 5.00 100 6.37 <LOD 0.004 4659 080123 Gateway Plaza__________________ 1/23/02 14.45 45 650.3 2.00 100 2.55 <LOD 0.004 4660 090123 South End Avenue and Albany_______ 1/23/02 14.45 45 650.3 4.50 100 5.73 <LOD 0.004 4661 100123 West and Albany________________ _ 1/23/02 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 4662 110123 Rector Place by park______________ 1/23/02 14.70 45 661.5 1.00 100 1.27 <LOD 0.004 .3 4663 120123 3rd Place and South End and Waterside 1/23/02 14.45 45 650.3 4.00 100 5.10 <LOD 0.004 4664 130123 West end of West Thames 1/23/02 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 4654 140123 Park Place and River Terrace 1/23/02 14.60 45 657.0 3.00 100 3.82 <0^ 0.004 4655 150123 River Terrace and Chambers 1/23/02 14.60 45 657.0 6.00 100 7.64 0.004 0.004 4656 160123 River Terrace and Warren 1/23/02 14.30 45 643.5 5.50 100 7.01 <LOD 0.004 4^ 170123 North End and Park Place 1/23/02 14.60 45 657.0 3.00 100 3.82 <LOD 0.004 4658 180123 Vesey and River Terrace___________ 1/23/02 14.60 45 657.0 7.00 100 8.92 0.005 0.004 4665 190123 Trinity Place and Thames___________ 1/23/02 14.45 45 650.3 4.00 100 5.10 <LOD 0.004 4671 200123 Vesey and West Broadway_________ 1/23/02 14.80 45 666.0 5.00 100 6.37 <LOD 0.004 4672 FBI Field Blank_____________________ 1/23/02 0.00 0 0.0 0.00 100 0.00 N/A N/A 4673 FB2 Field Blank 1/23/02 0.00 0 0.0 0.00 100 0.00 N/A N/A

ELAP ID No. 11750 Expires 12:01 AM, April 1, 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: AU (IM Marek Pavdik Laboratory Director

NYC-WTC_000161877