NGWA - STUDY QUESTIONS -
AUGERING & MONITORING WELL
EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026
The primary item which dictates the type of drilling equipment to be used on a site is... -
ANS ... geology.
The commonly used hollow-stem auger system for monitoring well installations... - ANS ...
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? - ANS Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - ANS 4.25 in.
The best drilling method to use in a highly toxic contaminated limestone formation that would
produce the least fluid management would be? - ANS Cable tool
Monitoring wells are commonly installed... - ANS ... downgradient of a landfill to determine
ground water contamination.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Which of the following is not an impermeable material? - ANS Sand
Due to the advanced technology, today's monitoring equipment and material... - ANS ...
Glacial drift is defined as... - ANS Unconsolidated sediment transported by glaciers and
disposed and deposited directly on land or sea.
What type of material(s) is(are) typically on monitor wells for a seal above the filter packs? -
ANS Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - ANS ... air rotary
with a down-hole hammer.
The difference between the flight OD and the ID of a hollow-stem auger is generally... -
ANS 4-5 inches.
The safety of operation of a hollow-stem auger drill rig is compromised when... - ANS ...
drilling operations occur closer than the 100' safety zone from an electrical line.
Daily inspection of drilling equipment should include, but is not limited to... - ANS Inspection
of cable, hoses, etc.
All fluid levels
First aid kit available
The drilling method used to construct a monitoring well should... - ANS ... minimize
disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - ANS ...
keeps the augers from "sliding" back into the borehole when removing the augers from the
borehole.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
AUGERING & MONITORING WELL
EXAM QUESTIONS AND ANSWERS
GRADED A+ 2026
The primary item which dictates the type of drilling equipment to be used on a site is... -
ANS ... geology.
The commonly used hollow-stem auger system for monitoring well installations... - ANS ...
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? - ANS Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - ANS 4.25 in.
The best drilling method to use in a highly toxic contaminated limestone formation that would
produce the least fluid management would be? - ANS Cable tool
Monitoring wells are commonly installed... - ANS ... downgradient of a landfill to determine
ground water contamination.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Which of the following is not an impermeable material? - ANS Sand
Due to the advanced technology, today's monitoring equipment and material... - ANS ...
Glacial drift is defined as... - ANS Unconsolidated sediment transported by glaciers and
disposed and deposited directly on land or sea.
What type of material(s) is(are) typically on monitor wells for a seal above the filter packs? -
ANS Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - ANS ... air rotary
with a down-hole hammer.
The difference between the flight OD and the ID of a hollow-stem auger is generally... -
ANS 4-5 inches.
The safety of operation of a hollow-stem auger drill rig is compromised when... - ANS ...
drilling operations occur closer than the 100' safety zone from an electrical line.
Daily inspection of drilling equipment should include, but is not limited to... - ANS Inspection
of cable, hoses, etc.
All fluid levels
First aid kit available
The drilling method used to construct a monitoring well should... - ANS ... minimize
disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - ANS ...
keeps the augers from "sliding" back into the borehole when removing the augers from the
borehole.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
