The Hydraulic Profiling Tool (HPT) allows the user to create fast, continuous, real-time profiles of soil hydraulic properties in both fine- and coarse-grained material.  The HPT uses a sensitive, downhole transducer to measure the pressure response of the soil to injection of water. One primary use of this tool is to locate and define preferential migration pathways for contaminants in the subsurface. It can also be used to target zones for injection of remediation material. In addition, the HPT can be used to select well screen intervals, evaluate locations to conduct slug tests, and measure static water conditions across a site. ...view the HPT system diagram

Field Data.... Sample Logs: Above are plots of EC (left) and HPT pressure (right) collected concurrently while the probe is advanced at a site in Salina, KS. Both the HPT pressure and the EC data confirm that clays predominate the upper 20 feet, which is underlain by ~35 ft. of silts and sands, followed by ~ 10 ft. of clays. Static water level was calculated to be at 31 ft. The HPT log was made to characterize potential cotaminant migration pathways at the site. The line drawn on the HPT pressure plot shows the hydrostatic increas as the probe gets deeper below the static water level.
		(top to bottom) FC5000 Field Instrument, HPT Controller, and HPT Pump