A certified well contractor of the appropriate level is not required on site for all activities
A grout seal for clayey materials should be _______ or more
Grout shall extend outward in all directions from the casing wall to a minimum thickness equal to either _________of the diameter of the outside dimension of the casing or ____ in, whichever is greater
When might spacing between wells in well point system be less than 25ft
The action of the surge plunger can cause _____ to plaster over the screen surface