CWEA COLLECTION GRADE 2 EXAM
1. Why are gasoline and volatile solvents objectionable when present in a
sewer?: They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or
replace electrical equipment unless:: You know what you are doing, are
qualified, and are authorized.
3. How many different areas of traffic zones are there when working in
roadways?: Five
4. Why should hydrogen sulfide be controlled?: To protect sewers and
structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the
following training:: Entry and rescue procedures
6. To find proper protective gear before application of a product, you
would:: Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is:: Hydrogen
Sulfide (H2S)
8. The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because:: Some dangerous gases have
no odor
9. What four conditions are necessary to create an explosion?: Combustible
gas, adequate oxygen, sufficient heat, and proper mixing of gas and oxygen.
10. What does "transition area" mean in traffic control?: Moves traffic out of
its normal path
11. The term "transition area" is one component of a:: Traffic Control Zone
12. What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones?: Rerouting traffic around the work
site, positioning of law enforcement officers in the temporary traffic control
zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P.
for Lift Station failure?: Traffic control plan, by-pass connections, and spill
containment.
14. "Spring Blades" are a type of tool used with:: Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used
for:: Sewer rodding
16. What tool would you use to cut VCP pipe?: Chain pipe cutter
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, 17. Which conditions should a gas detection device test for?: Hydrogen
Sulfide, explosive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter?: Lower explosive limit
19. The oxygen level alarm in a gas detection meter is normally set to go off
at oxygen levels below:: 19.5%
20. When developing an S.O.P. for scheduled maintenance of electrical
equipment, what program should be addressed as a primary safety
guideline?:
21. L.O.T.O. (Lock Out Tag Out) Program
22. What document would you require to be referenced when developing
an S.O.P. for hazardous substance spill cleanup as well as spill
containment?: -M.S.D.S.
23. Placement of the Blower and P.P.E. are two things you would include in
developing an S.O.P. for air monitoring in a:: Permit Required Confined Space
23. According to a State Water Resources Control Board order, each
Enrollee must develop and implement a system-specific:: Sewer System
Management Plan (SSMP)
24. Category 1 SSO's that discharge to a drainage channel and/or surface
water must be reported within:: 2 hours
25. To report in the Statewide SSO Data-base California Integrated Water
Quality System (CIWQS), regarding the location of a Category 2 SSO, you
must know:: the GPS coordinates
26. Biological activity in long, sluggish-flow, flat grade sewer lines will
likely cause odors, true or false?: True
27. Flatter sewer line grades may cause added sewer maintenance expense
and odor nuisance. The problem is most likely caused by:: A decrease in
velocity allowing organic and inorganic solids to settle out
28. Infiltration from a high water table can be one source of excessive clear
water in a collection system, true or false?: True
29. What is the first thing to consider when selecting a solution to clear a
stoppage in a sewer?: Cause of stoppage
30. The interior of 300 feet of 12-inch pipe is uniformly coated with one inch
of grease. How many gallons will this pipe hold when filled with water?: 12
inches (diameter of pipe) - 2 inches (grease on pipe) = 10 inches Convert inches
to feet:
10 inches x (1 foot / 12 inches) = 0.833 feet
Volume of a right regular cylinder:
V = 0.785 x Diameter x Diameter x Length of Pipe
2/6
1. Why are gasoline and volatile solvents objectionable when present in a
sewer?: They produce an explosion hazard
2. You should never attempt to install, troubleshoot, maintain, repair, or
replace electrical equipment unless:: You know what you are doing, are
qualified, and are authorized.
3. How many different areas of traffic zones are there when working in
roadways?: Five
4. Why should hydrogen sulfide be controlled?: To protect sewers and
structures from corrosion
5. Personnel entering a Permit Required Confined Space must have the
following training:: Entry and rescue procedures
6. To find proper protective gear before application of a product, you
would:: Look at the MSDS (Material Safety Data Sheet)
7. The gas most commonly associated with septic wastewater is:: Hydrogen
Sulfide (H2S)
8. The lack of an unpleasant odor in a structure does not always mean that
dangerous gases are not present because:: Some dangerous gases have
no odor
9. What four conditions are necessary to create an explosion?: Combustible
gas, adequate oxygen, sufficient heat, and proper mixing of gas and oxygen.
10. What does "transition area" mean in traffic control?: Moves traffic out of
its normal path
11. The term "transition area" is one component of a:: Traffic Control Zone
12. What elements should be considered to improve worker safety in High
Speed Temporary Traffic Control Zones?: Rerouting traffic around the work
site, positioning of law enforcement officers in the temporary traffic control
zone, and work zone training.
13. What key factors would you need to address when developing an S.O.P.
for Lift Station failure?: Traffic control plan, by-pass connections, and spill
containment.
14. "Spring Blades" are a type of tool used with:: Power Rodder
15. Porcupine, Root Saw, and a Square Bar Cork Screw are all tools used
for:: Sewer rodding
16. What tool would you use to cut VCP pipe?: Chain pipe cutter
1/6
, 17. Which conditions should a gas detection device test for?: Hydrogen
Sulfide, explosive/flammable gases, oxygen.
18. What does "LEL" mean on a gas detection meter?: Lower explosive limit
19. The oxygen level alarm in a gas detection meter is normally set to go off
at oxygen levels below:: 19.5%
20. When developing an S.O.P. for scheduled maintenance of electrical
equipment, what program should be addressed as a primary safety
guideline?:
21. L.O.T.O. (Lock Out Tag Out) Program
22. What document would you require to be referenced when developing
an S.O.P. for hazardous substance spill cleanup as well as spill
containment?: -M.S.D.S.
23. Placement of the Blower and P.P.E. are two things you would include in
developing an S.O.P. for air monitoring in a:: Permit Required Confined Space
23. According to a State Water Resources Control Board order, each
Enrollee must develop and implement a system-specific:: Sewer System
Management Plan (SSMP)
24. Category 1 SSO's that discharge to a drainage channel and/or surface
water must be reported within:: 2 hours
25. To report in the Statewide SSO Data-base California Integrated Water
Quality System (CIWQS), regarding the location of a Category 2 SSO, you
must know:: the GPS coordinates
26. Biological activity in long, sluggish-flow, flat grade sewer lines will
likely cause odors, true or false?: True
27. Flatter sewer line grades may cause added sewer maintenance expense
and odor nuisance. The problem is most likely caused by:: A decrease in
velocity allowing organic and inorganic solids to settle out
28. Infiltration from a high water table can be one source of excessive clear
water in a collection system, true or false?: True
29. What is the first thing to consider when selecting a solution to clear a
stoppage in a sewer?: Cause of stoppage
30. The interior of 300 feet of 12-inch pipe is uniformly coated with one inch
of grease. How many gallons will this pipe hold when filled with water?: 12
inches (diameter of pipe) - 2 inches (grease on pipe) = 10 inches Convert inches
to feet:
10 inches x (1 foot / 12 inches) = 0.833 feet
Volume of a right regular cylinder:
V = 0.785 x Diameter x Diameter x Length of Pipe
2/6
