FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

After chlorination, how long should the well be pumped before placing the well back into use:

Chlorine tested at 50ppm in water

Until water changes color

When water changes temperature

No detectable chlorine is found

For water well drilling, a weight of about _____ lb per gallon is desirable:

2

5

8

9

When grout has to be placed on casing greater than 20 feet below land surface one of the following two methods must be used:

Gravity flow

Pumping

Pressure

B & C

When removing wells screens of 16 inch diameter or larger a _______ is used at the lower end of the pulling pipe instead rather than sacking

Fork

Spear

Steel disk

End pipe

What is the typical drying time for Portland cement?

24 hrs

12 hrs

36 hrs

72 hrs