Grade 1 CWEA Collection Systems Maintenance Certification
Exam Study Guide & Practice Questions | 2025 Prep
Sewer maintenance vehi-
difficult to maneuver
cles are
At low concentrations, hy-
Rotten Eggs
drogen sulfide smells like
which safety hazard in a
collection system opera-
Toxic Gases
tions can be detected by
an insturment?
What must be checked Proper barricades or warn-
first before entering a man- ing devices around man-
hole? hole.
When should field crews When over half the street
use signs and cones? is blocked.
The different zones of traf-
buffer
fic control include
Elements of defensive dri- having your vehicle under
ving include control
maintain overall saftey of
The primary function of an
permited confied space
entry supervisor is to
operations
What should be the alarm
19.5%
set point for oxygen in
1/4
Exam Study Guide & Practice Questions | 2025 Prep
Sewer maintenance vehi-
difficult to maneuver
cles are
At low concentrations, hy-
Rotten Eggs
drogen sulfide smells like
which safety hazard in a
collection system opera-
Toxic Gases
tions can be detected by
an insturment?
What must be checked Proper barricades or warn-
first before entering a man- ing devices around man-
hole? hole.
When should field crews When over half the street
use signs and cones? is blocked.
The different zones of traf-
buffer
fic control include
Elements of defensive dri- having your vehicle under
ving include control
maintain overall saftey of
The primary function of an
permited confied space
entry supervisor is to
operations
What should be the alarm
19.5%
set point for oxygen in
1/4
