CWEA Collections Grade 1 – EXAM STUDY
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS || 100%
GUARANTEED PASS
Respirator certification - ANSWER Employees must be certified medically fit to wear
respirators.
Active safety program - ANSWER A program that includes routine safety meetings and
disciplinary actions.
Permit required confined space - ANSWER A confined space that requires a permit due to
potential hazards.
Cal/OSHA trench requirements - ANSWER Vertical walled trenches over 5 feet deep must be
shored.
Lockout requirements - ANSWER Strict procedures to ensure machinery is safely shut down
before maintenance.
Confined spaces - ANSWER Spaces that require special safety measures due to potential
hazards.
Illegal or incorrect connections - ANSWER Results from improper installation or
maintenance practices.
, Accident response in pump station - ANSWER First step is to send for help and check and/or
restore breathing.
Routine confined space - ANSWER A space that may require a permit if air quality changes.
Spoil placement in trench - ANSWER Spoil must be placed no closer than 2 feet from the
edge of the trench.
Supervisor approval for confined spaces - ANSWER All confined spaces are considered
'permit required' until supervisor approval.
Safety attitude - ANSWER All employees should maintain a proper safety attitude.
Infiltration detection methods - ANSWER Dye testing, Lamping, Low flows, Smoke testing
Inflow detection methods - ANSWER Dye testing, Lamping, High flows, Smoke testing
Underside of a manhole lid - ANSWER Can be a source of inflow, contribute to odor
problems, fail due to corrosion, harbor dangerous insects
Advantage of a CCTV system - ANSWER Ability to check out actual settling rates of disturbed
joints, observe water flowing down sewer, record infiltration water flow in action, visually
monitor removal of grease
Purpose of forcing air into the sewer system during smoke testing - ANSWER Blow any
smoke in the sewer out before testing starts, get an air flow established, ventilate the sewer to
remove explosive gases, warn illegal connections that the system will be smoke tested
, Lamping technique - ANSWER Used to accurately pinpoint location of roots, determine if a
sewer line is straight and clear of obstructions, find cracks where infiltration is entering the
pipeline, test new sewers for final acceptance from the contractor
Hydraulic cleaning methods - ANSWER Consist of cleaning a sewer with equipment that
scrapes material out of pipes, surcharging manholes to clean pipe, surface flows to clean
sewers, water under pressure that produces high water velocities
Clearing stoppage below a sewer ball - ANSWER Must be cleared as soon as possible to
avoid flooding homes and/or streets, high pressure that could blow-out pipe joints,
permanently blocking sewers, washing too much grit downstream
Traffic Zones in roadways - ANSWER There are four different areas
Finding proper protective gear - ANSWER Look at the material safety data sheet (MSDS)
Gas associated with septic wastewater - ANSWER Hydrogen sulfide
OERP - ANSWER Stands for Overflow Emergency Response Plan
Oxygen level alarm in gas detection meter - ANSWER Normally set to go off at oxygen levels
below 19.5 percent
Maintenance operation in a backyard easement - ANSWER Contact the resident and politely
ask for permission to enter the backyard
Earliest time to dig after a DigAlert ticket on Friday at 8am - ANSWER Tuesday 8am
GUIDE 2026/2027 COMPLETE QUESTIONS
WITH VERIFIED CORRECT ANSWERS || 100%
GUARANTEED PASS
Respirator certification - ANSWER Employees must be certified medically fit to wear
respirators.
Active safety program - ANSWER A program that includes routine safety meetings and
disciplinary actions.
Permit required confined space - ANSWER A confined space that requires a permit due to
potential hazards.
Cal/OSHA trench requirements - ANSWER Vertical walled trenches over 5 feet deep must be
shored.
Lockout requirements - ANSWER Strict procedures to ensure machinery is safely shut down
before maintenance.
Confined spaces - ANSWER Spaces that require special safety measures due to potential
hazards.
Illegal or incorrect connections - ANSWER Results from improper installation or
maintenance practices.
, Accident response in pump station - ANSWER First step is to send for help and check and/or
restore breathing.
Routine confined space - ANSWER A space that may require a permit if air quality changes.
Spoil placement in trench - ANSWER Spoil must be placed no closer than 2 feet from the
edge of the trench.
Supervisor approval for confined spaces - ANSWER All confined spaces are considered
'permit required' until supervisor approval.
Safety attitude - ANSWER All employees should maintain a proper safety attitude.
Infiltration detection methods - ANSWER Dye testing, Lamping, Low flows, Smoke testing
Inflow detection methods - ANSWER Dye testing, Lamping, High flows, Smoke testing
Underside of a manhole lid - ANSWER Can be a source of inflow, contribute to odor
problems, fail due to corrosion, harbor dangerous insects
Advantage of a CCTV system - ANSWER Ability to check out actual settling rates of disturbed
joints, observe water flowing down sewer, record infiltration water flow in action, visually
monitor removal of grease
Purpose of forcing air into the sewer system during smoke testing - ANSWER Blow any
smoke in the sewer out before testing starts, get an air flow established, ventilate the sewer to
remove explosive gases, warn illegal connections that the system will be smoke tested
, Lamping technique - ANSWER Used to accurately pinpoint location of roots, determine if a
sewer line is straight and clear of obstructions, find cracks where infiltration is entering the
pipeline, test new sewers for final acceptance from the contractor
Hydraulic cleaning methods - ANSWER Consist of cleaning a sewer with equipment that
scrapes material out of pipes, surcharging manholes to clean pipe, surface flows to clean
sewers, water under pressure that produces high water velocities
Clearing stoppage below a sewer ball - ANSWER Must be cleared as soon as possible to
avoid flooding homes and/or streets, high pressure that could blow-out pipe joints,
permanently blocking sewers, washing too much grit downstream
Traffic Zones in roadways - ANSWER There are four different areas
Finding proper protective gear - ANSWER Look at the material safety data sheet (MSDS)
Gas associated with septic wastewater - ANSWER Hydrogen sulfide
OERP - ANSWER Stands for Overflow Emergency Response Plan
Oxygen level alarm in gas detection meter - ANSWER Normally set to go off at oxygen levels
below 19.5 percent
Maintenance operation in a backyard easement - ANSWER Contact the resident and politely
ask for permission to enter the backyard
Earliest time to dig after a DigAlert ticket on Friday at 8am - ANSWER Tuesday 8am
