Fax cover sheet regarding environmental activities at 125 Barclay Street.
NYC-WTC_000119373–000119413Folder label: “125 BARCLAY STREET Block: 128 Lot: 26 BIN: 1001417 149-153 West St., 150 West St., 150-158 West St”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Re: Environmental Testing Page 2 of 5
125 Barclay Street is currently being used to house various members of the rescue and recovery operation. There is also concern that these personnel are carrying asbestos and lead contamination on their clothing when they return to the building.
H. A. Bader Consultants scope of work was to determine if there is a potential asbestos and/or lead related health concern in the building. The primary pathway for asbestos and lead to enter the building is through the ventilation systems, the main building entrances and operable windows. There are approximately 50 air handling units (AHU) that have outdoor air capabilities.
H. A. Bader Consultants performed asbestos testing in or near the outdoor air intake of every AHU. Asbestos and lead testing was performed at or near every building entrance, including those used by the rescue and recovery personnel. With the exception of the Penthouse and Basement levels, asbestos and lead surface samples were taken on the north and south sides of each floor of the building. A single asbestos air sample was taken in the center of the building on floors 1 through 10.
Once asbestos fibers enter a building they may remain airborne or settle onto fixed surfaces (primarily horizontal surfaces). Lead dust is heavy and settles very quickly. H. A. Bader Consultants testing methods concentrated on both airborne and surface testing for asbestos and only surface testing for lead.
Lead Testing
The U.S. Federal Department of Housing and Urban Development (HUD) and the City of New York Department of Environmental Protection (DEP) have established allowable levels of lead dust in residential settings occupied by children. The HUD/DEP clearance level is of 50 µg/ft2. These levels are extremely conservative and apply to buildings where small children (less than six years old) reside or frequently visit.
21 lead dust samples were taken. 19 samples were below the level of detection (i.e., no lead found). Two samples had detectable lead levels (41 and 69 µg/ft2), with only one sample exceeding the HUD/DEP guideline level. Reference the attached laboratory results from EMSL Analytical.
NYC-WTC 000119403
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