Current Environmental Topics Related to Construction and
Demolition Debris Management in Florida
Project Description:
Disposal of heavy metal and other
pollutant-containing waste in C&D debris landfill and the trend of
increasing concentrations of several pollutants in groundwater monitoring wells
suggest a need for close observation of the data from groundwater monitoring
wells.The leaching of Polycyclic
Aromatic Hydrocarbons (PAH) from reclaimed asphalt pavement (RAP) and shingles
is a possible obstacle to the beneficial reuse of RAP and shingles.One of the major focus areas in recent years
has been incidences of fire at C&D debris facilities in Florida and
elsewhere.Several landfill sites in
Florida are experiencing elevated iron concentrations in groundwater
wells.The iron rich soil is being
hypothesized as a source of iron.The
fate of As is very much tied to the chemistry of iron; iron soils have a strong
ability to adsorb arsenic from water.The fact that reducing conditions under landfills may cause iron to be
released suggests that As will also be released and might be more mobile than
expected.
This research will address specific project objectives
relevant to current environmental topics related to construction and demolition
(C&D) debris management in Florida. Project objectives include (1) updating
the C&D debris landfill groundwater database; (2) providing an updated risk
assessment of the reuse and disposal of several asphalt waste materials
(pavements and shingles);(3) reviewing
fire incidents at C&D debris landfills in Florida and other locations and
preparing a document that summarize the current state of knowledge regarding
cause, prevention, and remediation of such fires; and (4) evaluating the issue
of elevated iron concentrations in groundwater at C&D debris landfills by
operating and analyzing an ongoing set of experiments.
Project Status:
The project began in September 2007.The project is scheduled to be completed by
August 31, 2008. The quarterly progress reports will be provided.
Investigators
Timothy
Townsend
Principle Investigator
Hwidong Kim, Post-doctoral Associates
Brajesh
Dubey, Post-doctoral Associates
Wang Yu, Graduate Assistant
Project Sponsored by:
The
Hinkley Center for Solid and Hazardous Waste Management
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