NYC-WTC_000232881

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling ResuSts for Staten island Landfiii Sampling Date and Time 7/19/20020714 to 2146 Date VaSidatioii Date; 07/22/20Q2

PCM by NiOSH 7400 ___________ TEM ( AHERA) Sampling Sampling Sample Structures (#) Date Sample No. Location Volume* Matrix f/mm^ f/cc O.Sp - 5p 5!^ S/mm" S~f/CC‘* 07/19/02 LF05803 P-1 1076.40 Air 10.19 0.004 0 0 <13.12 <0.0047 07/19/02 LF05804 P-2 1278.00 Air 11.46 0.003 0 0 <15.75 <0.0047 07/19/02 LF05805 P-3 1260.00 Air 16.56 0.005 0 0 <15.75 <0.0048 07/19/02 LF05806 P-4 1296.00 Air 14.01 0.004 0 0 <15.75 <0.0047 07/19/02 LF05807 P-5 1296.00 Air 17.83 0.005 0 0 <15.75 <0.0047 07/19/02 LF05808 P-6 1296.00 Air 15.29 0.005 0 0 <15.75 <0.0047 07/19/02 LF05809 P-7 1296.00 Air 8.92 0.003 0 0 <15.75 <0.0047 07/19/02 LF05810 P-8 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/19/02 LF05811 W-12A 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/19/02 LF05812 W-12B 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/19/02 LF05813 T-15 1332.00 Air <7.0 <0.002 0 15.75 0.0046 07/19/02 LF05814 T-16 1098.00 Air <7.0 <0.002 0 0 <13.12 <0.0046 07/19/02 LF05815 0-17 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/19/02 LF05816 0-18 1296.00 Air <7.0 <0.002 0 0 <15.75 <0.0047 07/19/02 LF05817 0-19 997.50 Air <7.0 <0.003 0 0 <11.25 <0.0043 07/19/02 LF05818 Lot Blank 0.00 Air <7.0 n/a NA<^> NA<=^> NA<=^> NA<=^> 07/19/02 LF05819 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 Analysis of Air samples via NIOSH 7400, Revision 3, issue 2, 8/15/94 O Asbestos Fiber Analysis by Transmission Eiectron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) H Standard criteria: EPA 40CFR Part 763 (AHERA); 0,01 fiber/cc (PCM), 70 S/mm’, volume 1200 L, for 25 mm filter (TEM)

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NYC-WTC_000232881