1|Page
CWEA Collection Systems Maintenance Grade 1 /
CWEA CSM Grade 1 Practice test 2025 Contains 150
Questions and correct answers/ CWEA CSM Grade 1
Exam Prep Latest
A Flagger should Stand?
A. On the shoulder adjacent to traffic being controlled
B. In the closed lane before stopping vehicle traffic
C. In the traffic lane.
D. As stated in "A" or "B" above. - ...ANSWER...✓✓ D. As
stated in "A" or "B" above.
Legally responsible officials are required to report
category 1 sanitary sewer overflows?
A. Within 30 days
B. Before end of the day
C. As soon as possible
D. Within 2 hours - ...ANSWER...✓✓ D. Within 2 hours
When working in confined spaces or sewers, what form
of lighting would you use?
,2|Page
A. Mirrors to direct the sunlight or explosion proof
lighting.
B. Ordinary electric lights
C. Propane, Gas, or kerosene lanterns
D. Special matches - ...ANSWER...✓✓ A. Mirrors to direct
the sunlight or explosion proof lighting.
What can happen if water-based substances are used to
extinguish electrical fires?
a. Nothing but extinguish the fire
b. The fumes are not harmful
c. Receive an electrical shock
d. They will corrode the electrical contacts -
...ANSWER...✓✓ c. Receive an electrical shock
When testing a manhole for explosive gases when should
the first tests be made?
a. After removing the manhole cover
b. Before removing the manhole cover
c. At any time
d. After ventilation - ...ANSWER...✓✓ b. Before removing
the manhole cover
,3|Page
Atmospheric hazards encountered in manholes can
include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres. - ...ANSWER...✓✓ c. lack
of oxygen.
When setting up to ventilate a manhole, the air inlet
should be how many feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0 - ...ANSWER...✓✓ c. 2.0
Which chemical may be used for odor control in a sewer
system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
, 4|Page
d. Sodium chloride - ...ANSWER...✓✓ b. Hydrogen
peroxide
What information must be on a warning tag attached to a
switch that has been locked out?
a. Directions for removing tag.
b. Name of nearest physician to call in case of
emergency.
c. Signature of person who locked out switch and who is
the only person authorized to remove tag.
d. Time to unlock switch. - ...ANSWER...✓✓ c. Signature of
person who locked out switch and who is the only person
authorized to remove tag.
Under what conditions must each member of the rescue
service practice permit space rescues?
a. At least once a year in a simulated situation or by the
satisfactory performance of an actual rescue.
b. At least twice a year in simulated situations.
c. At least once a year in simulated situation using non-
representative space conditions
CWEA Collection Systems Maintenance Grade 1 /
CWEA CSM Grade 1 Practice test 2025 Contains 150
Questions and correct answers/ CWEA CSM Grade 1
Exam Prep Latest
A Flagger should Stand?
A. On the shoulder adjacent to traffic being controlled
B. In the closed lane before stopping vehicle traffic
C. In the traffic lane.
D. As stated in "A" or "B" above. - ...ANSWER...✓✓ D. As
stated in "A" or "B" above.
Legally responsible officials are required to report
category 1 sanitary sewer overflows?
A. Within 30 days
B. Before end of the day
C. As soon as possible
D. Within 2 hours - ...ANSWER...✓✓ D. Within 2 hours
When working in confined spaces or sewers, what form
of lighting would you use?
,2|Page
A. Mirrors to direct the sunlight or explosion proof
lighting.
B. Ordinary electric lights
C. Propane, Gas, or kerosene lanterns
D. Special matches - ...ANSWER...✓✓ A. Mirrors to direct
the sunlight or explosion proof lighting.
What can happen if water-based substances are used to
extinguish electrical fires?
a. Nothing but extinguish the fire
b. The fumes are not harmful
c. Receive an electrical shock
d. They will corrode the electrical contacts -
...ANSWER...✓✓ c. Receive an electrical shock
When testing a manhole for explosive gases when should
the first tests be made?
a. After removing the manhole cover
b. Before removing the manhole cover
c. At any time
d. After ventilation - ...ANSWER...✓✓ b. Before removing
the manhole cover
,3|Page
Atmospheric hazards encountered in manholes can
include:
a. non-explosive atmospheres.
b. non-toxic atmosphere.
c. lack of oxygen.
d. non-flammable atmospheres. - ...ANSWER...✓✓ c. lack
of oxygen.
When setting up to ventilate a manhole, the air inlet
should be how many feet above street level?
a. 4.0
b. 3.0
c. 2.0
d. 1.0 - ...ANSWER...✓✓ c. 2.0
Which chemical may be used for odor control in a sewer
system?
a. Calcium chloride
b. Hydrogen peroxide
c. Oxidized aluminum
, 4|Page
d. Sodium chloride - ...ANSWER...✓✓ b. Hydrogen
peroxide
What information must be on a warning tag attached to a
switch that has been locked out?
a. Directions for removing tag.
b. Name of nearest physician to call in case of
emergency.
c. Signature of person who locked out switch and who is
the only person authorized to remove tag.
d. Time to unlock switch. - ...ANSWER...✓✓ c. Signature of
person who locked out switch and who is the only person
authorized to remove tag.
Under what conditions must each member of the rescue
service practice permit space rescues?
a. At least once a year in a simulated situation or by the
satisfactory performance of an actual rescue.
b. At least twice a year in simulated situations.
c. At least once a year in simulated situation using non-
representative space conditions
