NYC-WTC_000231431

NYC 9/11 Public Portal Document

SciLabJob#: 201101535 Page 1 of 1 Client Name: Riverpoint, Inc. Phase Contrast Microscopy (PCM) Fiber Results 10171; DEP; NYC, Manhattan Flow Air Fiber Fibers SciLab Client Rate Duration Filtered Density Cone. Fields Fibers TWA Sample # Sample # / Location Collected (liters/min.) (min.) (liters) (Fibers/mm^ ) (Fibers/cc)

01 11-1005 10/5/01 15 50 750 100 5 0.37 <0.004 Rector Place 02 13-1005 10/5/01 15 50 750 100 4 5.10 <0.004 West End West Thomas 03 12-1005 10/5/01 15 50 750 100 3 3.82 <0.004 3rd Place/ West End/ Water Side 04 9-i005 10/5/01 15 50 750 100 3 3.S2 <0.004 South End Albany 05 S-1005 10/5/01 15 50 750 100 4 5.10 <0.004 Gateway Plaza (South End Of Library) 06 10-1005 10/5/01 15 50 750 100 9 11.46 0-006 West Of Albany 07 19-1005 10/5/01 15 50 750 100 9 11.46 0.006 Trinity' Place & James 08 FB-IA 10/5/01 0 0 0 100 0.5 0.64 Field Blank Footnotes: 7 09 FB-2A 10/5/01 0 0 0 100 0.5 0.64 Field Blank Footnotes: / Reporting Notes: (1) Fibers/cc cannot be c; lated for les (or blanks) with no air volume. Analyzed by: Fred Corirossi Date Analyzed: 10/5/01

*NAD/N5D = no asbsstos detecled; NA = cot analyzed; NVLAP Lab #200546-0; New Yoik samples (NYSDOH ELAP Lab # 114S0); National Institute of Standards and Technology Accreditation teqnirements mandate that this report must not be reproduced except in full without the approval of the laboratory. A IH A # 102843. o H

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NYC-WTC_000231531