Introduction to the Use and Installation of In Situ Piezometers for Groundwater Monitoring

Presented on Thursday, December 6, 2012

Groundwater pressure is traditionally measured using cased wells. An alternative approach to groundwater level monitoring is to use in situ pressure transducers or piezometers to measure changes in groundwater pressure. Special attention will be devoted to the vibrating wire (or “VW”) piezometer, which is the most commonly-used type. VW piezometers are versatile and in most applications less expensive than wells for monitoring groundwater pressure. Grout-in-place transducers are shown to be more responsive to rapid changes in groundwater pressure than wells, especially in low-permeability material. You will learn how to install, calibrate, operate, and monitor VW piezometers in addition to initial costs and maintenance. Supportive case studies on construction dewatering and water resource studies will be shared.

Presenter:
Roy E. Jensen, Senior Hydrogeologist
Hart Crowser Inc., Seattle, WA
Roy is a senior hydrogeologist with the geotechnical and environmental consulting firm Hart Crowser, Inc based in Seattle, Washington. He has over with 25 years of experience managing hydrogeologic investigations for a variety of private and public clients. His current practice focuses on water resource assessments, construction dewatering, stormwater infilration, water quality monitoring, and groundwater modeling.

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