NGWA - Study Questions - Augering &
Monitoring Well And All Correct
Answers.
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.
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.
Which of the following is not an impermeable material? - Answer Sand
Due to the advanced technology, today's monitoring equipment and material... - Answer ...
Glacial drift is defined as... - Answer 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? -
Answer Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - Answer ... air
rotary with a down-hole hammer.
, The safety of operation of a hollow-stem auger drill rig is compromised when... - Answer ...
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... - Answer
Inspection of cable, hoses, etc.
All fluid levels
First aid kit available
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
Contamination from the cement grout leaking into the filter pack may be indicated by... -
Answer ... high pH.
Prior to leaving a hazardous waste site, decontamination is done in order to... - Answer ...
make sure no contamination leaves the site.
Monitoring Well And All Correct
Answers.
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.
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.
Which of the following is not an impermeable material? - Answer Sand
Due to the advanced technology, today's monitoring equipment and material... - Answer ...
Glacial drift is defined as... - Answer 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? -
Answer Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - Answer ... air
rotary with a down-hole hammer.
, The safety of operation of a hollow-stem auger drill rig is compromised when... - Answer ...
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... - Answer
Inspection of cable, hoses, etc.
All fluid levels
First aid kit available
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
Contamination from the cement grout leaking into the filter pack may be indicated by... -
Answer ... high pH.
Prior to leaving a hazardous waste site, decontamination is done in order to... - Answer ...
make sure no contamination leaves the site.
