NYC-WTC_000232868

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Resuits for Staten island Landfill Sampling Date and Time 7/14'20020700 to 2020 Data Validation Date; 07/17/2002

PCM by NiOSH 7400 ___________ TEM ( AHERA) Sampiing Sampling Sample Structures (#) Date Sample No. Location Volume Matrix f/mm^ f/cc 0.5ti - 5p 5!^ S/mm" S-f/cc" 07/14/02 LF05719 P-1 1296.00 Air <7.0 <0.002 0 15.75 0.0047 07/14/02 LF05720 P-2 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05721 P-3 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05722 P-4 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05723 P-5 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05724 P-6 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05725 P-7 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05726 P-8 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05727 W-12A 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05728 T-15 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05729 T-16 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05730 0-17 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05731 0-18 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05732 0-19 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/14/02 LF05733 Lot Blank 0.00 Air <7.0 n/a NA<=^> NA<=^> NA<=^> NA<=^> 07/14/02 LF05734 Trip Blank 0.00 Air <7.0 n/a NA<^> NA<=^> NA<=^> NA<=^>

Key: * Some sample volume (liters) are below recommended limit for the TEM method; volume is based on pump reading ** Structure (S) is roughly equivalent to fiber (f) *** Chrysotile **** Actinolite ““‘Amosite NA <’> - Not analyzed due to overloading of particulates NA - Not analyzed for TEM NA - Not analyzed due to wet filter n/a - Not applicable NR - Not requested NS - Sample not submitted R - Sample data rejected due to no sample volume NC - Sample not collected NS - Sample not submitted

NiOSH 7400: Fiber Afiaiysis of Air samples via NIOSH 7400, Revision 3, issue 2, 8/15/94 Asbestos Fiber Analysis by Transmission Electroti Microscopy (TEM) EPA 40CFR Part 763 (AHERA) O Standard criteria: EPA 40CFR Part 763 (AHERA); 0,01 fiber/cc (PCM), 70 S/mm’, volume 1200 L, for 25 mm filter (TEM) H

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NYC-WTC_000232868