When a threadless sampling tap is installed the flowing elements shall be required:
The chlorine solution shall stand in the well for a period of minimum _____hours or more
The well, if constructed to obtain water from an unconsolidated rock formation, shall be equipped with a screen that will prevent the entrance of formation material into the well
Which are the following are not good features of a well screen:
What should be removed after the casing has been sunk to the depth at which the bottom of the screen is be set:
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