NYC-WTC_000187059

NYC 9/11 Public Portal Document

AIRBORNE ASBESTOS ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY

CLIENT: WaiTen & Panzer Engineers, P.C. PROJECT: NYC DEP, 150 William Street LABORATORY ID #: T02-11-069 DATE OF REPORT: 11/14/02 ATHENICA ANALYT. METHODOLOGY: AHERA DATE OF ANALYSIS: 11/14/02 ENVIRONMENTAL SERVICES INC. FILTER TYPE: M C E. EFFECTIVE FILTER AREA 385 Tel. (718) 784-7490 AVERAGE G.O. AREA 0.013433 Fax. (718) 784-4085 LABORATORY RESULTS

CLIENT # LAB. ID # LOCATION VOLUME G.O.’s AREA ANALYT. TOTAL TOTAL AIR AIR ASBEST. AMPHIB. (It) ANAL AN ALY SENSITIV. ASBESTOS ASBESTOS CONC. CONC. TYPE ASBEST YZED ZED (struct./cm’) AIR CONC. FILTER FOR FOR CHRYS. TYPE (mm^) (strHC./cin^) CONC. STRUCT. STRUCT. SPECIFY (str./mm^) 0.5SS<Spm S>5.0|.im 01 T02-11- Near entrance to 1800 4 0.0537 0.0040 0.0080 37.22 0.0080 <0.0040 Chrys. NA 069-4050 building on roof 02 T02-11- Staggered on roof 1800 4 0.0537 0.0040 <0.0040 <18.61 NA NA NA NA 069-4051 03 T02-11- Staggered on roof 1800 4 0.0537 0.0040 <0.0040 <18.61 NA NA NA NA 069-4052 04 T02-11- Staggered on roof 1800 4 0.0537 0.0040 <0.0040 <18.61 NA NA NA NA 069-4053 05 T02-11- Staggered on roof 1800 4 0.0537 0.0040 <0.0040 <18.61 NA NA NA NA 069-4054

ANALYST LABORATORY DIRECTOR E. Sioukri Spiro Dongaris

LABORATORY CERTIFICATION NUMBERS: NVLAP 101958, ELAP 10955 o Athenica Environmental Services fnc. (AES), is responsible only for information pertaining tn samples taken by its employees. Air sampling cassettes will be stored for sixty (60) days. AES Inc., should be notified within this time frame for a true duplicate analysis. K I If AES Inc., did not conduct the sampling, the reported airborne concentration was derived based on information provided by the client. Under these circumstances, the air concentration data Is supplied solely for the convenience of the client. S The report relates only to items tested. This report must not be used to claim product endorsement by NVLAP or any other agency of the U.S. Government, fest reports may not be reproduced O except in full and with prior approval of AES Inc. o I'he liability of Athenica Environmental Services Inc. with respect to the services charged, shall in no event exceed the amount of the invoice. o I o o

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NYC-WTC_000187059