Tree Coring as a Potential Site Characterization Tool of Shallow Groundwater Contamination
Activities by the Department of Defense (DOD) sometimes have resulted in groundwater contamination. These contaminants are usually either fuels, metals, or halogenated solvents. The subsurface is heterogeneous. Under the best of circumstances, investigating the subsurface has been an endeavor marked with technical difficulties and uncertainty. Investigating the subsurface in remote areas can be extremely difficult and expensive. Drilling wells requires specialized knowledge and equipment. Prior to drilling, utility surveys have to be performed, drilling locations determined, drilling permits obtained, and drilling crews lined up often months in advance. Difficulties commonly are encountered with both traditional drilling and push-technology equipment and with subsurface conditions that exist. Derived wastes such as drill cuttings and purge water must be handled in an appropriate manner. Areas of concern located in sites with difficult terrain or beneath heavily wooded areas, in riparian corridors, or marshes are often not sampled.
KeywordsTree Ring Groundwater Contamination Natural Capital Alluvial Aquifer Tree Core
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