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NYC-WTC_000209856

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000209856–000209863
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NYC 9/11 Public Portal Document

Tribeca Park-400 Chambers Street ATC Project No.: 09622-0012 Related Management Company, L.P. February 15, 2002 Page 7

Airborne Metals One common area and nine residential units were sampled for and analyzed for airborne metals All recorded analytical results were less than analytical detection.

Duct and Exterior Cleaning TechClean Industries cleaned the air duct of the building. This cleaning included removal and reinstallation after wet cleaning of the grills and registers and High Efficiency Particulate Air (HEPA) vacuuming and washing of the induction fan supplying the systems The risers were cleaned in phases by sealing diffusers with plastic sheeting and tape, deploying isolation bags to assist in controlling negative pressure, HEPA negative exhaust equipment and various pneumatic agitation devices. The work commenced from the upper most floor and worked towards the mechanical room Arcade Contracting cleaned exterior surfaces of the building. This cleaning included High Efficiency Particulate Air (HEPA) vacuuming of exterior ledges and window tracks and pressure washing of exterior surfaces. Following exterior cleaning activities all windows were washed.

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CITY_21MC100_002848646

NYC-WTC_000209863

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NYC-WTC_000209863Source: NYC Law Department, mirrored locally

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