FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ2

When an open borehole has been drilled below the depth to which the casing is to be grouted, what must happen:

Lower part of the hole must be backfilled

A bridge must be set in the hole

Sticks should be placed in frame

Both A & B

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

True

False

Casing in wells constructed to obtain water from an unconsolidated rock formation (such as gravel, sand, or shells) shall extend at least ______ ft into the top of the water-bearing formation

1

3

5

7

The entire depth of the well shall be sounded before it is sealed to ensure freedom from obstructions that may interfere with sealing operations

True

False

Chlorine shall be placed in the well in sufficient quantities to produce a chlorine residual of at least:

200ppm

500ppm

50ppm

100 ppm

WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ2

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