NGWA - Study Questions - Auguring &
Monitoring Well with verified answered
graded A+
The primary item which dictates the type of drilling equipment to be used on a site is... - correct
answer ✔✔... geology.
The commonly used hollow-stem auger system for monitoring well installations... - correct
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? - correct answer ✔✔Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - correct 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? - correct answer ✔✔Cable tool
Monitoring wells are commonly installed... - correct answer ✔✔... downgradient of a landfill to
determine ground water contamination.
Which of the following is not an impermeable material? - correct answer ✔✔Sand
Due to the advanced technology, today's monitoring equipment and material... - correct answer
✔✔...
, Glacial drift is defined as... - correct 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? -
correct answer ✔✔Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - correct answer
✔✔... air rotary with a down-hole hammer.
The difference between the flight OD and the ID of a hollow-stem auger is generally... - correct
answer ✔✔4-5 inches.
The safety of operation of a hollow-stem auger drill rig is compromised when... - correct 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... - correct answer
✔✔Inspection of cable, hoses, etc.
All fluid levels
First aid kit available
The drilling method used to construct a monitoring well should... - correct answer ✔✔...
minimize disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - correct
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... - correct 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.
Monitoring Well with verified answered
graded A+
The primary item which dictates the type of drilling equipment to be used on a site is... - correct
answer ✔✔... geology.
The commonly used hollow-stem auger system for monitoring well installations... - correct
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? - correct answer ✔✔Mud pump.
What is the minimum size hollow-stem auger, casing, or borehole used for installation of a
typical 2-inch well? - correct 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? - correct answer ✔✔Cable tool
Monitoring wells are commonly installed... - correct answer ✔✔... downgradient of a landfill to
determine ground water contamination.
Which of the following is not an impermeable material? - correct answer ✔✔Sand
Due to the advanced technology, today's monitoring equipment and material... - correct answer
✔✔...
, Glacial drift is defined as... - correct 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? -
correct answer ✔✔Bentonite pellets.
The most efficient method of drilling a bedrock monitoring well would be... - correct answer
✔✔... air rotary with a down-hole hammer.
The difference between the flight OD and the ID of a hollow-stem auger is generally... - correct
answer ✔✔4-5 inches.
The safety of operation of a hollow-stem auger drill rig is compromised when... - correct 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... - correct answer
✔✔Inspection of cable, hoses, etc.
All fluid levels
First aid kit available
The drilling method used to construct a monitoring well should... - correct answer ✔✔...
minimize disturbance of subsurface materials
The "auger fork" is a device that slips through the flights of the auger column and... - correct
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... - correct 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.
