CLASS 512
Field Excursion
10/13/2005

Class excursion meets for Geoprobe drilling provided by Groundwater Services, Inc. in cooperation with Fugro Consultants	Core samples are laid out for the geologist	Soil classification chart
Soil classification chart	Geoprobe drilling the well	GSI boring logs of the cores are kept by the geologist
After each 5 foot drill-casing a new drill-casing has to be mounted	Drill-casings are stored on a rack on the side of the machine	A 5-ft core is slit open for the geologist to be examined
To check if water has been reached and the geologist is confirming a water level	The drill-head of the Geoprobe casing. This drill-head channels the core into a plastic tube inside the drill-casing.	The permanent well-casings. Well-casing on top and a fine-mesh stainless steel well screen on the bottom
Water level has been confirmed. Ready for well-casing installation.	Screen and well-casing are being installed into the well	Water level elevation is measured by the geologist
Water level elevation is measured	Sand is poured around the well-screen on the bottom of the well	Bentonite is poured to finish of the well and to prevent water in the water-bearing unit from connecting with the unit above the confined unit
Water is bailed out the well and poured into a glass vial for laboratory sampling.	Care is taken to prevent air from being trapped in the sample.	Lunch in the form of pizza is welcomed by the class
Well is finished by installing a concrete pad	Well cap sits just above ground surface	Concrete to be mixed
Mixing of the concrete	Pouring of the concrete	Smoothing of the concrete
Finishing touches	Finishing touches	Note the well casing within the well hole
Well cap is bolted down	Note that the well cap is above the ground surface and that the concrete slopes to the sides. This is to promote rainfall to runoff to the sides and not collect in the well hole