NGWA AUGERING & MONITORING
WELL
PRACTICE EXAM QUESTIONS
WITH CORRECT DETAILED
ANSWERS | ALREADY GRADED
A+<RECENT VERSION>
1. The most important function of the drilling fluids in rotary drilling is -
answer to bring cuttings from the bottom of the hole.
2. In selecting a fluid for a well, the following consideration should be
given. - answer fluid should be selected on the basis of the
circumstances of each individual well.
3. When selecting a screen for a monitoring well, which of the following is
not a consideration? - answer type of well head seal.
4. The purpose for making a sieve analysis of sand and gravel formations in
monitoring well construction is... - answer ... To select the proper
screen slot opening.
,5. When backfilling the annulus of a monitoring well after the filter pack
and seal are in place, the best material to use is... - answer ... Cement
and/or bentonite grout materials.
6. Which material is best for a typical 2-inch monitoring well filter pack? -
answer coarse clean silica sand.
7. Without regard to sampling parameters, which of the four typical types of
materials used for monitoring wells would deteriorate the quickest in a
low ph environment? - answer steel.
8. A flush mount well cover should have... - answer ... Concrete in the
base.
9. If decontamination procedures are not followed, what piece(s) of drill
equipment is (are) most likely to contaminate a well? - answer 1. Drill
rods.
2. Augers.
3. Samplers.
10.The purpose for a double cased monitoring well would be... - answer
... To prevent migration of contamination between aquifers.
11.Which of the following is usually added to cement grout to reduce
shrinkage? - answer bentonite.
12.To protect against suspected dust, mist, fumes, and vapors, personnel
should begin operations by having... - answer ... A filtration respirator.
, 13.The site specific safety plan calls for level d ppe. Level d ppe includes... -
answer hard hat, safety glasses, steel toe shoes.
14.When drilling monitoring wells in urban areas, which of the following
should be taken into consideration? - answer 1. Access to drilling
sites.
2. Underground utilities.
3. Overhead utilities.
15.Under what conditions will bentonite pellets not swell to their maximum
size? - answer in highly mineralized water.
16.How far can a well screen section be moved vertically after a filter pack
and bentonite seal have been placed? - answer the length of the filter
pack above the screen.
17.The purpose of taking ground water samples while advancing the hole it...
- answer ... To determine containment concentrations at specific
intervals in the aquifer.
18.What standard method is used for decontaminating equipment and
materials does not belong? - answer lubricate equipment with
petroleum products after cleaning.
19.Which of the following factors can alter the quality of a ground water
sample taken from a monitoring well? - answer 1. Solvent used to
weld pvc casing together.
2. Improperly stored and handled casing.
3. Drilling fluid.
20.Which of the following is not true? - answer the spt is performed by
driving a standard sampler 9 inches into the soil using a 100 lb hammer.
WELL
PRACTICE EXAM QUESTIONS
WITH CORRECT DETAILED
ANSWERS | ALREADY GRADED
A+<RECENT VERSION>
1. The most important function of the drilling fluids in rotary drilling is -
answer to bring cuttings from the bottom of the hole.
2. In selecting a fluid for a well, the following consideration should be
given. - answer fluid should be selected on the basis of the
circumstances of each individual well.
3. When selecting a screen for a monitoring well, which of the following is
not a consideration? - answer type of well head seal.
4. The purpose for making a sieve analysis of sand and gravel formations in
monitoring well construction is... - answer ... To select the proper
screen slot opening.
,5. When backfilling the annulus of a monitoring well after the filter pack
and seal are in place, the best material to use is... - answer ... Cement
and/or bentonite grout materials.
6. Which material is best for a typical 2-inch monitoring well filter pack? -
answer coarse clean silica sand.
7. Without regard to sampling parameters, which of the four typical types of
materials used for monitoring wells would deteriorate the quickest in a
low ph environment? - answer steel.
8. A flush mount well cover should have... - answer ... Concrete in the
base.
9. If decontamination procedures are not followed, what piece(s) of drill
equipment is (are) most likely to contaminate a well? - answer 1. Drill
rods.
2. Augers.
3. Samplers.
10.The purpose for a double cased monitoring well would be... - answer
... To prevent migration of contamination between aquifers.
11.Which of the following is usually added to cement grout to reduce
shrinkage? - answer bentonite.
12.To protect against suspected dust, mist, fumes, and vapors, personnel
should begin operations by having... - answer ... A filtration respirator.
, 13.The site specific safety plan calls for level d ppe. Level d ppe includes... -
answer hard hat, safety glasses, steel toe shoes.
14.When drilling monitoring wells in urban areas, which of the following
should be taken into consideration? - answer 1. Access to drilling
sites.
2. Underground utilities.
3. Overhead utilities.
15.Under what conditions will bentonite pellets not swell to their maximum
size? - answer in highly mineralized water.
16.How far can a well screen section be moved vertically after a filter pack
and bentonite seal have been placed? - answer the length of the filter
pack above the screen.
17.The purpose of taking ground water samples while advancing the hole it...
- answer ... To determine containment concentrations at specific
intervals in the aquifer.
18.What standard method is used for decontaminating equipment and
materials does not belong? - answer lubricate equipment with
petroleum products after cleaning.
19.Which of the following factors can alter the quality of a ground water
sample taken from a monitoring well? - answer 1. Solvent used to
weld pvc casing together.
2. Improperly stored and handled casing.
3. Drilling fluid.
20.Which of the following is not true? - answer the spt is performed by
driving a standard sampler 9 inches into the soil using a 100 lb hammer.
