Ambient air sampling report, 40 Rector Street, Sep-Oct 2001

NYC 9/11 Public Portal Document

hJ 40 Rector Holdings, LLC ATC Project No.: 19855-0001 C/0 Tannenbaum Helpern Syracuse & Hirschtritt LLP October 25, 2001 Ambient Air Sampling - 40 Rector Street Page 5 Of 7 n u n restrict to the extent possible access to the lobby via the revolving door only which i-ial would minimize odor infiltration and limit odor movement via the elevator shafts; and to perform daily wet-wiping and moping of the lobby with a standard cleaner or detergent solution. As of October 23, 2001, all three recommendations have successfully been implemented with satisfactory results in reducing odor entrainment into the building. n Summary Based upon the analytical results following the initial and subsequent cleaning phases of n 40 Rector Street recording levels within the AHERA clearance requirement, ATC’s concludes that the ambient air samples and lAQ measurements collected throughout the building and building operation modifications performed are representative of the ambient conditions at the time of testing and that the areas tested meet an acceptable criterion for re-occupancy.

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ATC Associates Inc. © 2001

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