Environmental Monitoring of Hydrocarbon Contaminated Groundwater

A F Howland Associates has experience in investigation of sites contaminated with hydrocarbon products, specifically NAPLs (Non-Aqueous Phase Liquids) primarily of heating oil composition. Where contamination is suspected, exploratory holes are carried out to confirm of disprove its presence and standpipes are installed to allow in-situ sampling and monitoring of groundwater. An oil/water interface probe is used to determine thicknesses of NAPL residing in the standpipe. This equipment utilises a specially designed float to accurately measure the surface of the NAPL and a conductive probe to identify the surface of the groundwater.