Penetration Testing for Groundwater Contaminants

by D. J. Woeller, Univ of Alberta, Canada,
I. Weemees, Univ of Alberta, Canada,
M. Kokan, Univ of Alberta, Canada,
G. Jolly, Univ of Alberta, Canada,
P. K. Robertson, Univ of Alberta, Canada,

Document Type: Proceeding Paper

Part of: Geotechnical Engineering Congress?1991


Recent advances in penetration testing technology have produced a variety of new penetration devices to measure groundwater conditions. This paper describes two specially designed devices; a resistivity cone and a chemical testing cone (chemi-cone). The resistivity cone consists of a full seismic cone penetrometer that can record tip resistance, sleeve friction, pore pressure and seismic wave velocity arrivals. Two electrodes, located behind the standard piezo cone unit, are used to measure the bulk resistivity of the surrounding soil. Data are presented to illustrate the potential of the resistivity cone for detecting changes in groundwater resistivity. The chemi-cone also consists of a full seismic cone penetrometer as well pore water testing chamber. The device has the ability to determine water conductivity and temperature. Data are presented to illustrate the potential of the chemi-cone to directly measure some of the chemical properties of groundwater.

Subject Headings: Penetration tests | Seismic tests | Water pollution | Temperature measurement | Groundwater pollution | Water resources | Conical bodies

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