FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION EXAM

What are two differences in drilling into soft formation versus rock?

Pipe or casing must follow the drill bit closely

Casing has to be driven

The drilling effect of the bit is a loosening/mixing action

All of the above

The mineral content in the Mountain region and most of the Piedmont is generally less than total dissolved solids of 100 mg/l (milligrams per liter)

True

False

A well may be permanently abandoned when the following occurs:

Owner allows non owner to service well

Owner maintains the well

Becomes a source of contamination to groundwater supply

All of the above

Driven wells can be installed only in soft formations free from ________

Water

Grass

Rocks

All of the above

What is the average greatest suction lift that can be developed practically on a well point system

25ft

30ft

40ft

50ft

WELL CONTRACTORS CERTIFICATION CONSTRUCTION EXAM