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1 <br /> Expanding plug type <br /> --'' Locking cap <br /> Locking steel sleeve <br /> Ground surface <br /> 4" Sch 40 blank casing , <br /> Cement-bentonite grout <br /> bentonite plug 10 <br /> 0.020" slotted PVC casing <br /> No, 3 sand <br /> 30/ <br /> ------ 0-inch (nomina() boring <br /> Typical monitoring well at Eastside Winery <br /> wastewater disposal area, Not to scale <br />