NYC-WTC_000210956

NYC 9/11 Public Portal Document

NYC Response Asbestos Air Sampling Results for Staten Island Landfill Sampling Date and Time: 10/07/01 1930 to 10/08/01 0730

PCM by NIOSH 7400 TEM AHERA) Sampling Sampling Sample f/mm^ f/cc Structures (#) S/mm’ S~f/cc* Date Sampie No. Location Volume Matrix 0.5p - 5p

10/7-10/8 02935 #1 661.6 Air 12.74 0.007 0 0 <8.00 <0.0047 10/7-10/8 02936 #2 660.7 Air <7.0 <0.004 0 0 <8.00 <0.0047 10/7-10/8 02937 #3 485.7 Air <7.0 <0.006 0 0 <8.00 <0.0063 10/7-10/8 02938 #4 663.2 Air <7.0 <0.004 0 0 <8.00 <0.0046 10/7-10/8 02939 #5 663.6 Air <7.0 <0.004 0 0 <8.00 <0.0046 10/7-10/8 02940 #6 496 Air <7.0 <0.005 0 0 <8.00 <0.0062 10/7-10/8 02951 #7 671 Air <7.0 <0.004 0 0 <8.00 <0.0046 10/7-10/8 02952 #8 670 Air <7.0 <0.004 0 0 <8.00 <0.0046 10/7-10/8 02953 #9A 546.9 Air <7.0 <0.005 0 0 <8.00 <0.0056 10/7-10/8 02954 #9B 662 Air 20.38 0.012 3“ 2*. 40 0.0233 10/7-10/8 02955 #9C 670.2 Air 12.74 0.007 0 1" 8 0.0046 10/7-10/8 02956 #10 620 Air 7.64 0.005 0 0 <8.00 <0.0050 coc# 04608 “ Chrysotile

NS: Not sampled Sample volume is below recommended limit of the method: ‘Structure (S) roughly equivalent to fiber (f) NA: not analyzed due to overloading of particulates

NIOSH 7400: Fiber Analysis of Air samples via NIOSH 7400, Revision 3, Issue 2, 8/15/94 Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) EPA 40CFR Part 763 (AHERA) Standard criteria: EPA 40CFR Part 763 (AHERA): 0.01 fiber/cc (PCM), 70 S/mn?, volume 1200 L, for 25 mm filter (TEM)

ERT: 10/09/01 9:50 AM

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NYC-WTC_000210956