NGWA - Study Questions - Auguring & Monitoring
Well / Comprehensive Study Guide Complete
Questions and Correct Detailed 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 difference between the flight OD and the ID of a hollow-stem auger is
generally... - (ANSWER)4-5 inches.
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
Well / Comprehensive Study Guide Complete
Questions and Correct Detailed 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 difference between the flight OD and the ID of a hollow-stem auger is
generally... - (ANSWER)4-5 inches.
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
