Asbestos air sampling summary, 47 & 80 West Street, Oct

NYC 9/11 Public Portal Document ,FEB.14 "1002 23:18 €1412 P.003/003 104 East 25th 5treat New York New York 10010 www.atc-envlro.cam 212.333.8280 rrox 212.383.8308

ViA FACSIMILE: 212-206-5680 (1 page)

October 8, 2001

Mr. Brian Becker Time Equities Management 55 Fifth Avenue, 15" Floor New York. NY

RE: Asbestos Ambient Air Sampling Results 47 West Street and 80 Washington Street

Dear Mr. Becker. presenting the asbestos ATC Associates Inc. (ATC) is pleased to submit this summary report ambient air sample results for 47 West Street and 80 Washington Street. On September 25, 2001 ATC collected a total of thirty ambient air samples from within 47 West Street followed by the collection of 11 eleven ambient air samples from within 80 Washington Street on September 25, 2001 to ascertain the presence or absence of airborne asbestos. Ali samples collected were analyzed In accordance with the AHERA Transmission Electron Microscopy (TEM) method as set forth at 40 CFR Part 763, Subpart E, Appendix A. Acceptable ambient air samples results are those sample sets meeting the AHERA re-occupancy requirern!'nt following en asbestos abatement action of an average of less than 70 asbestos structures per square millimeter (<70 s/mm2 ). Summary of Ambient Air Sample Results I Result L. ......47 West Street i All s~nles_<7v g/mm, I :3t) vashington Street I All samples <70 s/mm _ ]]

Based upon the analytical results of less than 74 asbestos structures per square millimeter (<70 s/mm2) which is within'the AHERA clearance requirement, it is ATC's opinion that the ambient air samples collected throughout the two buildings meet an acceptable criterion for re- occupancy. if you have any questions or require additional explaination of the information presented please do not hesitate to call me at 212-353-8280 Sincerely,

'L ¶L&LfLé1 Fred Bullchardt Senior Project Manager ATC Associatet Inc.

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