NGWA - STUDY QUESTIONS -
AUGERING AND MONITORING
WELL ATUAL EXAM WITH
CORRECT ANSWERS
The best drilling method to use in a highly toxic contaminated limestone formation that would
produce the least fluid management would be? - answer- Cable tool
Monitoring wells are commonly installed... - answer- ... downgradient of a landfill to
determine ground water contamination.
The primary item which dictates the type of drilling equipment to be used on a site is... -
answer- ... geology.
The commonly used hollow-stem auger system for monitoring well installations... - answer-
... should include an auger head than can be machined to accent a plate that facilitates
well installation below the ground water level.
Which is NOT a component of a monitoring well rig? - answer- Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - answer- 4.25 in.
, Which of the following is not an impermeable material? - answer- Sand
Due to the advanced technology, today's monitoring equipment and material... - answer-
...
The drilling method used to construct a monitoring well should... - answer- ... minimize
disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - answer-
... keeps the augers from "sliding" back into the borehole when removing the augers
from the borehole.
For drilling operations at a hazardous waste site, the exclusion zone is... - answer- ... the
area on-site that is potentially contaminated and where workers must wear PPE as stipulated in
the site specific health and safety plan.
An advantage of using hollow-stem augers is... - answer- ... no drilling fluid is used,
eliminating contamination by drilling fluid additives.
A disadvantage of using cable tool drilling for monitoring wells is... - answer- ... possible
problems in controlling heaving sands.
Air in the discharge line of a recovery well system could be caused by... - answer- Hole in
drop pipe
Cascading water
Plugged screen and cavitation
AUGERING AND MONITORING
WELL ATUAL EXAM WITH
CORRECT ANSWERS
The best drilling method to use in a highly toxic contaminated limestone formation that would
produce the least fluid management would be? - answer- Cable tool
Monitoring wells are commonly installed... - answer- ... downgradient of a landfill to
determine ground water contamination.
The primary item which dictates the type of drilling equipment to be used on a site is... -
answer- ... geology.
The commonly used hollow-stem auger system for monitoring well installations... - answer-
... should include an auger head than can be machined to accent a plate that facilitates
well installation below the ground water level.
Which is NOT a component of a monitoring well rig? - answer- Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - answer- 4.25 in.
, Which of the following is not an impermeable material? - answer- Sand
Due to the advanced technology, today's monitoring equipment and material... - answer-
...
The drilling method used to construct a monitoring well should... - answer- ... minimize
disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - answer-
... keeps the augers from "sliding" back into the borehole when removing the augers
from the borehole.
For drilling operations at a hazardous waste site, the exclusion zone is... - answer- ... the
area on-site that is potentially contaminated and where workers must wear PPE as stipulated in
the site specific health and safety plan.
An advantage of using hollow-stem augers is... - answer- ... no drilling fluid is used,
eliminating contamination by drilling fluid additives.
A disadvantage of using cable tool drilling for monitoring wells is... - answer- ... possible
problems in controlling heaving sands.
Air in the discharge line of a recovery well system could be caused by... - answer- Hole in
drop pipe
Cascading water
Plugged screen and cavitation
