WATER WELL DRILLING 101 FOR GENERAL EXAM QUESTIONS AND ANSWERS 100% SOLVED.  

Well construction is comprised of the following componets? - ANSWERdrilling, installation of casing, placing well screens, grouting, DEVELOPMENT Minimum grouting distance? - ANSWER10' is code Artesian Well - ANSWERArtesian pressure is the result of gravity and the confining Aquifer Artesian Well Layers - ANSWERCONFINING Layer (top) CONFINED AQUIFER (middle) IMPERMEABLE Layer (bottom) Tremie Pipe Inside Casing - ANSWERGrout Pipe installed temporarily inside casing, Cement plug or float attached at the bottom of the casing, Casing is filled with water and grout pumped through pipe, Casing must be cleaned of all debris after grouting Well Screens - ANSWERFiltering device allowing water while holding back sand, .006 TO .250 Important Screen Functions - ANSWEREASILY DEVELOPED, MINIMAL INCRUSTING TENDENCY, LOW HEAD LOST THROUGH SCREEN, CONTROLS SAND PUMPING IN MANY DIFFERENT AQUIFERS Reduction in Well Yield caused by - ANSWERIMPROPER DEVELOPMENT, I