NYC-WTC_000199515

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I ■D o c o E3 CT o o' co CL ■D CD o cn 3. CJ> Ki New York City Emergency Response 03

o Asbestos Air SampHng Results at Fixed Locations o o ru Samplisg Time: 2.00 AM 9/20/01 to 10.00 AM 9/20/01 c fO 3 CD r\j P Sample PCM NIOSH 7400 TEM(AHERA) Date Sample No. S.L Volume Matrix f/MM’ f/cc <Sp(>Sp) SA»4"(S-f/cc) SW 9/20/01 01444 A 424 Air 7.64 0.007 <8.00 (<0.0073) 9/20/01 01446 B 406 Air <7.0 <0.007 <8.00 i<0.007S) 9/20/01 01448 C 480 /Mr <7.0 <0,006 <8.00 (<0.0064) 9/20/01 01450 D 417 Air <7,0 <0,006 <8.00 (<0.0074) 9/20/01 01422 E 215 , Air <7.0 <0,013 <8.00 (<0,0143) 9/20/01 01425 F 421 Air 10.83 0,010 <6 00 (<0,0073) 9/20/01 01426 G 401 Air <7.0 <0,007 <8.00 (<0.0077) 9/20/01 01428 H 422 Air <7,0 <0,006 <8.00(<0.0073) QJ oocM140ja

od NA; not analyzed due to oveloadbg of particulates Eh PCM: NIOSH 7400 Asbestos Fiber Analysis by Transmission Electron Microscopy (TEM) £PA 40CFR Part 763 (AHERA), S.L; Sampling Locations i CL Sample volume Is below recommended limit of the method: 'Structure (S) Roughly equBwalent to Fiber (F) Standard criteria: EPA 40CFR Part 763 (AHERA): 0.01fiber/cc (PCM), 70S/mm2, volume 120OL, tor 25MM filter (TEM)

A; Barclay+Broad B; Church+-Dey St. CD C: Liber1y+3road “cr D: Broad + Wall E: Albany + Greenwich s F; IWest + Vessey

IS ?5 6: West + Warren H: Harrison Tree ERT9/2W01

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