CWEA Collection System Maintenance Grade 2 Exam QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES
Exam coverage
• advanced inspection
• hydraulics
• cleaning methods
• root control
• infiltration and inflow
• equipment selection
• maintenance planning
• safety
• documentation
• troubleshooting
,1. When evaluating a field situation, which statement best applies because Advanced
collection inspection evaluates structural, hydraulic, and operational conditions using
appropriate tools.. Which answer best applies the underlying collection maintenance
grade 2 principle in this situation?
A. Hydraulic principles help explain flow, capacity, surcharge, and system behavior..
B. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
C. Advanced collection inspection evaluates structural, hydraulic, and operational conditions
using appropriate tools..
D. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Advanced collection
inspection evaluates structural, hydraulic, and operational conditions using appropriate tools..
The alternatives describe related concepts but do not directly answer the issue presented.
2. An inspector is reviewing this condition; which response is most appropriate
because Hydraulic principles help explain flow, capacity, surcharge, and system
behavior.. Which answer best applies the underlying collection maintenance grade 2
principle in this situation?
A. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
,B. Hydraulic principles help explain flow, capacity, surcharge, and system behavior..
C. Infiltration and inflow can increase system flows and may require source identification and
correction..
D. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Hydraulic principles help
explain flow, capacity, surcharge, and system behavior.. The alternatives describe related
concepts but do not directly answer the issue presented.
3. Which explanation best connects the requirement with its practical purpose when
Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects.. Which answer best applies the underlying collection maintenance
grade 2 principle in this situation?
A. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
B. Equipment selection should consider pipe size, material, access, deposits, and worker
safety..
C. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
, D. Infiltration and inflow can increase system flows and may require source identification and
correction..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Cleaning methods should
be selected based on deposits, pipe condition, access, and downstream effects.. The
alternatives describe related concepts but do not directly answer the issue presented.
4. A technician must decide how to proceed; which answer is supported by the
principle that Root-control programs require identification of recurring intrusion and
appropriate treatment planning.. Which answer best applies the underlying collection
maintenance grade 2 principle in this situation?
A. Maintenance planning prioritizes condition, criticality, risk, resources, and service needs..
B. Infiltration and inflow can increase system flows and may require source identification and
correction..
C. Equipment selection should consider pipe size, material, access, deposits, and worker
safety..
D. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Root-control programs
require identification of recurring intrusion and appropriate treatment planning.. The
ANSWERS WITH RATIONALES
Exam coverage
• advanced inspection
• hydraulics
• cleaning methods
• root control
• infiltration and inflow
• equipment selection
• maintenance planning
• safety
• documentation
• troubleshooting
,1. When evaluating a field situation, which statement best applies because Advanced
collection inspection evaluates structural, hydraulic, and operational conditions using
appropriate tools.. Which answer best applies the underlying collection maintenance
grade 2 principle in this situation?
A. Hydraulic principles help explain flow, capacity, surcharge, and system behavior..
B. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
C. Advanced collection inspection evaluates structural, hydraulic, and operational conditions
using appropriate tools..
D. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Advanced collection
inspection evaluates structural, hydraulic, and operational conditions using appropriate tools..
The alternatives describe related concepts but do not directly answer the issue presented.
2. An inspector is reviewing this condition; which response is most appropriate
because Hydraulic principles help explain flow, capacity, surcharge, and system
behavior.. Which answer best applies the underlying collection maintenance grade 2
principle in this situation?
A. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
,B. Hydraulic principles help explain flow, capacity, surcharge, and system behavior..
C. Infiltration and inflow can increase system flows and may require source identification and
correction..
D. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
Correct answer: B
Rationale: The correct choice directly states the governing principle: Hydraulic principles help
explain flow, capacity, surcharge, and system behavior.. The alternatives describe related
concepts but do not directly answer the issue presented.
3. Which explanation best connects the requirement with its practical purpose when
Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects.. Which answer best applies the underlying collection maintenance
grade 2 principle in this situation?
A. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
B. Equipment selection should consider pipe size, material, access, deposits, and worker
safety..
C. Cleaning methods should be selected based on deposits, pipe condition, access, and
downstream effects..
, D. Infiltration and inflow can increase system flows and may require source identification and
correction..
Correct answer: C
Rationale: The correct choice directly states the governing principle: Cleaning methods should
be selected based on deposits, pipe condition, access, and downstream effects.. The
alternatives describe related concepts but do not directly answer the issue presented.
4. A technician must decide how to proceed; which answer is supported by the
principle that Root-control programs require identification of recurring intrusion and
appropriate treatment planning.. Which answer best applies the underlying collection
maintenance grade 2 principle in this situation?
A. Maintenance planning prioritizes condition, criticality, risk, resources, and service needs..
B. Infiltration and inflow can increase system flows and may require source identification and
correction..
C. Equipment selection should consider pipe size, material, access, deposits, and worker
safety..
D. Root-control programs require identification of recurring intrusion and appropriate treatment
planning..
Correct answer: D
Rationale: The correct choice directly states the governing principle: Root-control programs
require identification of recurring intrusion and appropriate treatment planning.. The
