Site control plan table of contents, undated

NYC 9/11 Public Portal Document

Staten Island Landfill Debris Disposal Operation Health and Safety Program

this document indicated that “several aldehydes were detected in the NYSDEC monitoring program at levels above health standards. Levels above health comparison values were detected in a majority ofthe samples collected for formaldehyde, acetaldehyde, acrolein, and propionaldehyde ”

Based on the above. Initial worker exposure evaluations will be conducted for the following landfill gas constituents;

Methane. Hydrogen sulfide. Aldehydes. Benzene and other volatile aromatic hydrocarbons. Vinyl chloride and other volatile organic halocarbons. Other constituents as deemed necessary based on information obtained regarding the composition ofthe Staten Island landfill gas entering the gas treatment system.

4.3.4 Other Chemical Agents

It is possible that other chemical agents maybe present in the debris being brought to the site for handling and processing; however their presence is not anticipated to be signifcant in the overall WTC waste stream. However, limited exposure assessments may be performed on select constituents, particularly those that are detected at “Ground Zero”.

Metals can be present as unique particles originating from painted material as well as metal- containing material. The transfer and handling ofthe debris may result in the generation of airborne metal dust, some of which may be respirable. Due to the non-homogenous nature of the debris, the risk of metal exposure will constantly fluctuate, and therefore, a monitoring program should be developed and enacted for the duration ofthe project.

Numerous organic compounds may be found in the debris as a result ofthe fires, both before and after the WTC building collapses. While this class of chemicals does not readily form gasses, they can become airborne through the physical handling process of contaminated materials.

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