Entries in contaminant transport (2)

Tuesday
Nov292016

Salt storage impact to potable water supply

Xenon completed an electromagnetic survey to map the distribution of chlorides in shallow soils in the vicinity of a supply well.  Magnetic gradiometry data were collected to evaluate the presence of abandoned well casings.  The results are compelling and show the influence of previously unmapped utility corridors that were likely installed for an interment camp that was located at the site in the 1940s. 

This image shows areas of increased conductivity (red-orange) that are attributed to chloride content with distinctly linear anomalies interpreted as underground utilities.  Soil sampling corroborated the results.background impagery per Google Earth Pro.

Friday
Sep092016

Low Head Dam Removals

Attended an excellent workshop on the removal of low head dams.  Their impacts can be far-reaching and include public recreational use, stream ecology, water resources, the transport of sediment and bound contaminants and others. It is key to understand the complexities of each dam and its unique local environment.