50 BROAD STREET 1000820, 24/36

NYC 9/11 Public Portal Document

AIRBORNE ASBESTOS ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY

CLIENT: Wtumi & Pauzer Engineers. P.C. PROJECT: NYC DEP, 50 B1oa4 St. NYC LABORATORY ID 0:1102-0a-117 DAlE OF REPORT: 08/23/02 ATHENICA DATE OF AicALYSIS: 08/21102 FAWIROiJY~tff*t $1IRY)t>E's tNe- AItALYT• METHODOLOGY: A11I RA TILIIIR TYPE: M.C.E EFFECTIVE FILTER AREA (end): 385 Td. 17t817s4-74o F 1719)7611.0 S AVERAGE G.O. AREA (Inter) 0.012422

LABORATORY RESULTS

CLIENT LAB, ID LOCA116Y VOLUME G4.'a AREA RLYi. TOTAL TOTAL AIR SIIST. AlNPI11L N (11) ANAL. A:NALY SMSITfv. ASht ST0S ASJ6<ESTos a)NC. Coiic. TYPi' 4a.sw sT H YLBO ZED (slsudJorn) AIRCONC. FILTER 80R ItOR CDIRYS. TYPE (rnmt) (srwc•/crn CONC. STRUCT. STR1JCr. SPECIFY (alr.Jnan') •5SS µm S25A 11)01 TOZ-08- IY A 141 side of 1350 5 0.0621 0.0046 4044046 <16.10 NA NA NA NA 117-1807 WA(rool) _ ID 02 T02-0a- IWA Second left 1350 5 0.0621 0.0046 <0.0046 <16.10 NA NA NA NA 117-1603 side of WA(rool) ID 03 T02-08- IWA middle of 1350 5 4.0621 0.0046 <0.0046 <16.10 NA NA NA NA 117.1809 WA(Taof) ID 04 T02-08- IWA Exit to the 1350 5 0.0621 0.0046 <0.0046 <16.10 NA NA NA NA 117-1810 roof ID 05 T02-OR- 1WA Right side 1350 5 0.0621 11.0046 41.0046 <16.10 NA NA IAA NA 117-1811 of WA(roof)

ANALYST LABORATORY DIRECTOR Spiro Dongaris

LABORATORY CERTIFICATION NUMBERS: NVLAR 101958, FLAP 10955

• Air sampNag crosettesriil be stated for sixty (69) ays. AEiS bte., skoatdba nutifxd within is tine fume tot a 1r5t duplicate analysis. • It AES In.. did not deduct the sampling, the reported airborne cone Mahon was dadved t~esetl os ixfotmatiun proridell by tb client_ Under these cirrumstaaas, the air concentration data is supplied ualeJy for the tonvenicoceaf the client. r The report wlates only to items tested, This sport must not be used to dais pnrduct cadorsca:cn c by WV LAP oe any othev agcnsy of the U.S. Gor wi ient. teal acporis may not be reproduced except in full aeA with prior approval of AES Inc. • The lihilty of A0enica FmvitoRwentoi Services inc. with respect to ilt rervicarehatged, shalt it as event exceed the amount of Ara iavaicc.

NYC-WTC 000118528