NYC-WTC_000187532

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o o co g Services, Inc. I o enata onsulting u o 304 Edgemont Terrace Teaneck NJ 07666 201 692 7967 fax 201 678 1789 c o CT o o' oo ■D CD Certificate of Analysis o Ca3 3. ro Client: Riverpoint, Inc Project Location: WTC, NYC Analysis Date: January 10, 2002 03

Client#: 101171 Work Area: N/A RCS Project# 192 o o o c 3 P( M Air Sample Analysis Summary CD

Lab ID Client ID Sample Description Date Flow Rate Duration Volume Fibers Fields Density Fiber Cone. LOD Collected [liters/min.l [minutesl [liters! [Fiber/mm^l ffiber/ccl [Fiber/ccl 4468 010110 Park Place and Church 1/10/02 14.80 45 666.0 7.00 100 8.92 0.004 4469 020110 Park Place and Greenwich__________ 1/10/02 15.00 45 675.0 5.00 100 6.37 <LOD 0.004 4470 030110 Murray and Church________________ 1/10/02 14.80 45 666.0 8.50 100 10.83 t^.006 0.004 4471 040110 Murray and Greenwich_____________ 1/10/02 15.00 45 675.0 4.00 100 5.10 ' <LOD 0.004 4472 050110 Fulton and Church 1/10/02 15.00 45 675.0 2.00 100 2.55 <LOD 0.004 4454 060110 V\feirren and North End 1/10/02 14.30 45 643.5 3.00 100 3.82 <LOD 0.004 4455 070110 West Street and Warren 1/10/02 14.30 45 643.5 4.00 100 5.10 <LOD 0.004 4461 080110 Gateway Plaza___________________ 1/10/02 14.70 45 661.5 3.00 100 3.82 <LOD 0.004 4462 090110 South End Avenue and Albany________ 1/10/02 14.70 45 661.5 6.00 100 7.64 0.004 0.004 4463 100110 West and Albany__________________ 1/10/02 14.45 45 650.3 2.00 100 2.55 <LOD 0.004 4464 110110 Rector Place by park______________ 1/10/02 14.70 45 661.5 2.00 100 2.55 <LOD 0.004 4465 120110 3rd Place and South End and Waterside 1/10/02 14.70 45 661.5 6.00 100 7.64 3/3.004 0.004 4466 130110 West end of West Thames 1/10/02 14.70 45 661.5 5.00 100 6.37 <LOD 0.004 4456 140110 Park Place and River Terrace 1/10/02 14.30 45 643.5 2.00 100 2.55 <LOD 0.004 4457 150110 River Terrace and Chambers 1/10/02 14.60 45 657.0 4.00 100 5.10 <LOD 0.004 4458 160110 River Terrace and Warren 1/10/02 14.60 45 657.0 2.00 100 2.55 <LOD 0.004 4459 170110 North End and Park Place 1/10/02 14.60 45 657.0 2.00 100 2.55 <LOD 0.004 4460 180110 Vesey and River Terrace___________ 1/10/02 14.30 45 643.5 5.00 100 6.37 <LOD 0.004 4467 190110 Trinity Place and Thames___________ 1/10/02 14.70 45 661.5 4.00 100 5.10 <LOD 0.004 4473 200110 Vesey and West Broadway__________ 1/10/02 14.80 45 666.0 4.00 100 5.10 <LOD 0.004 4474 210110 Field Blank 1/10/02 0.00 0 0.0 0.00 100 0.00 N/A N/A o 4475 220110 Field Blank 1/10/02 0.00 0 0.0 0.00 100 0.00 N/A N/A H

ELAP ID No. 11750 Expires 12:01 AM, April 1, 2002 Analysis Method: Phase Contrast Microscopy, NIOSH Method 7400 I—i S Limit of Quantitation (LOQ) = 102 [Fiber/mm^] o Limit of Detection (LOD) = 7 [Fiber/mm^] o o I o o to Analysis Performed By: kO (JI Marek Pawlik CD o Laboratory Director CD to