NYC-WTC_000205822

NYC 9/11 Public Portal Document

AIRBORNE ASBESTOS ANALYSIS BY TRANSMISSION ELECTRON MICROSCOPY CLIENT: Warren & Panzer Engineers, P.C. PROJECT: NYC DEP, 1 Beekman Street ATHENICA LABORATORY ID #: T02-09-090 DATE OF REPORT: 09/26/02 environmental services INC. ANALYT. METHODOLOGY: AHERA DATE OF ANALYSIS: 09/26/02 Tec (718) 784-7190 FILTER TYPE: M C E. EFFECTIVE FILTER AREA (mm^): 385 Fax- (718) 781-1085 AVERAGE G.O. AREA 0.013838

LABORATORY RESULTS

CLIENT# LAB. ID LOCATION VOLUME g;o?s AREA ANALYT. TOTAL TOTAL AIR AIR ASBEST. AMPHIB. # (It) ANAL ANALY SENSITIV. ASBESTOS ASBESTOS CONC. CONC. TYPE ASBEST YZED ZED (struct./cm^) AIR CONC. FILTER FOR FOR CHRYS. TYPE (mm^) (striic./cm’) CONC. STRUCT. STRUCT. SPECIFY (str./mm’) 0.5<S<5pin S>5.0pm 1 T02-09- IWA on roof. 1500 4 0.0554 0.0046 <0.0046 <18.07 HA N^ NA NA 090-2521 Center of work area, .. T02-09- IWA on roof. North 1500 4 0.0554 0.0046 <0.0046 <18.07 NA NA NA NA 090-2522 section of WA. 3 T02-09- IWA on roof. West 1500 4 0.0554 0.0046 <0.0046 <18.07 NA NA NA NA 090-2523 section of WA. 4 T02-09- IWA on roof. 1500 4 0.0554 0.0046 <0.0046 <18.07 NA NA NA NA 090-2524 Northwest of WA. 1ft of facade. 5 T02-09- OWO on stairwell 1500 4 0.0554 o.6b4r <0.0046 <18.07 NA NA NA NA 090-2525 leading to roof. 1ft of door entrance.

ANALYST LABORATORY DIRECTOR E. Sioukri Spiro Dongaris

LABORATORY CERTIFICATION NUMBERS: NVLAP 101958, ELAP 10955 o Allienica Environmental Services Inc. (AES), is responsible only for information pertaining to 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. 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 S supplied solely for the convenience of the client. O The report relates only to hems tested fhis report must not be used io claim product endorsement by NV LAP or any other agency of the U.S. Government. Test reports may not be reproduced o except in full and with prior approval of Al .S Inc. o I he liability of Athenica Environniental Servicc.s Ine. with respect to the services charged, shall in no event exceed the amount of the invoice I o o kO kO O CO CO CT)

NYC-WTC_000205822