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20 <br /> Slide #6 <br /> Well Overview <br /> Water-fable Artesian <br /> • Well (n): A pit or hole well well <br /> sunk into the earth to Land surface <br /> o Palentiamelric... <br /> reach water =- 5"`'° e = = <br /> a _ <br /> UNCONFINED SAND Cfi�gey <br /> t \ o <br /> AQUIFER <br /> m77 <br /> • Water-table vs Confined :Water I°C;e well <br /> _..1. .;green a <br /> wells w - - - - - - - - - - - - - - - <br /> d CONFINING _—�—_ <br /> ' BED _—_ — - CLAY <br /> • Sustainability and <br /> s CONFINED OOen _ <br /> susceptibility to LIMESTONE= hole _ <br /> contaminants varies AaUIFER <br /> Heath,1983.Basic Ground-Water Hydrology <br /> AKM <br /> C.J. Corvette defined wells simply as a hole in the ground that water is pulled out of, <br /> distinguishing between shallow water table wells in unconfined aquifers and deeper confined <br /> aquifer wells. He emphasized that community wells target confined aquifers because they are <br /> more protected from any contamination that happens at the surface. Shallow wells are susceptible <br /> to contamination from various sources, including, for example, nitrate from fertilizer from a <br /> property across the street. <br /> Slide #7 <br /> Well Overview cont. <br /> • Well uses: <br /> • Extraction <br /> • Information <br /> • Resources like water,oil,minerals <br /> • Contaminants <br /> • Injection <br /> • Water tIL <br /> • Heat - <br /> • Treatments for contaminants 1 <br /> • Monitoring 4 <br /> • Drinking Water Ii <br /> Af�M <br /> C.J. Cornette said wells aren't just for water. He said boreholes can 5be+drilled to examine <br /> sediments and identify the type of rock under the surface, which can be used to advise a variety <br />