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Class C Wastewater Exam Questions and Answers
2024/2025 (Graded A+)
Clean书山有路勤为书山有路勤为径，学海无涯苦作舟书
Water Act - (answers)(CWA, 1972) set maximum permissible amounts of
water山书山有路勤为径，学海无涯苦作舟有路勤为径，
pollutants that can be discharged into waterways; aims to make surface
waters swimmable and fishable
学海无涯苦作舟径，学海无涯苦作舟
Texas Water Code - (answers)Under Chapter 26, the Texas Commission on
Environmental Quality (TCEQ) has jurisdiction over the discharge of waste into
or adjacent to water in the state.
TCEQ can revoke your license for - (answers)violating the permit, falsifies
records, states misleading information on licensing application, or causes other
violations.
water quality fees - (answers)based on plant flow, can be high as $115,000 per
permit.
Accidental Discharge - (answers)plant has 24hrs to notify TCEQ, which may be
done by phone or fax.
Penalties - (answers)TCEQ Water Code violation can be up to $25000 per day
for each violation.
Required records - (answers)flow and effluent quality- 3 yrs
sludge records-5 yrs
DMR - (answers)Discharge Monitoring Report has to be submitted to TCEQ no
later than the 20th of the following month.
, 2
DMR signing - (answers)Operators should not sign unless a legal signatory or
have written authorization from a legal signatory within your organization.
书山有路勤为书山有路勤为径，学海无涯苦作舟书
山书山有路勤为径，学海无涯苦作舟有路勤为径，
preliminary treatment - (answers)the 1st stage of sewage treatment where
large debris, such as sticks, grit, and rags pas through a screen followed by a
学海无涯苦作舟径，学海无涯苦作舟
grit chamber, where the flow of water is slowed enough to allow for
sedimentation.
coarse screens - (answers)bar screen-parallel bars-manually or mechanically
cleaned. Must maintain 1.0ft per second. Need to be frequently cleaned or
disposed of.
fine screens - (answers)mechanically cleaned-less than 0.25in. two types are
disc and drum. Used for pretreatment of industrial wastes.
Comminutor - (answers)A circular grinder designed to grind the solids coming
through the screen into pieces.
Cyclone grit separator - (answers)enters at top angle and the flow velocity
causes a spinning action, the grit is concentrated at the bottom of funnel.
Centrifugal pump - (answers)A non-positive displacement pump that moves a
varying amount of fluid with each rotation using an impeller blade. Must be
primed and most common type.
Positive Displacement Pump - (answers)A type of pump that uses positive
pressure to move a fluid. Three types are diaphragm, screw, and piston. Keep
discharge valves open always. Used to move sludge, polymers, and chemicals.
Class C Wastewater Exam Questions and Answers
2024/2025 (Graded A+)
Clean书山有路勤为书山有路勤为径，学海无涯苦作舟书
Water Act - (answers)(CWA, 1972) set maximum permissible amounts of
water山书山有路勤为径，学海无涯苦作舟有路勤为径，
pollutants that can be discharged into waterways; aims to make surface
waters swimmable and fishable
学海无涯苦作舟径，学海无涯苦作舟
Texas Water Code - (answers)Under Chapter 26, the Texas Commission on
Environmental Quality (TCEQ) has jurisdiction over the discharge of waste into
or adjacent to water in the state.
TCEQ can revoke your license for - (answers)violating the permit, falsifies
records, states misleading information on licensing application, or causes other
violations.
water quality fees - (answers)based on plant flow, can be high as $115,000 per
permit.
Accidental Discharge - (answers)plant has 24hrs to notify TCEQ, which may be
done by phone or fax.
Penalties - (answers)TCEQ Water Code violation can be up to $25000 per day
for each violation.
Required records - (answers)flow and effluent quality- 3 yrs
sludge records-5 yrs
DMR - (answers)Discharge Monitoring Report has to be submitted to TCEQ no
later than the 20th of the following month.
, 2
DMR signing - (answers)Operators should not sign unless a legal signatory or
have written authorization from a legal signatory within your organization.
书山有路勤为书山有路勤为径，学海无涯苦作舟书
山书山有路勤为径，学海无涯苦作舟有路勤为径，
preliminary treatment - (answers)the 1st stage of sewage treatment where
large debris, such as sticks, grit, and rags pas through a screen followed by a
学海无涯苦作舟径，学海无涯苦作舟
grit chamber, where the flow of water is slowed enough to allow for
sedimentation.
coarse screens - (answers)bar screen-parallel bars-manually or mechanically
cleaned. Must maintain 1.0ft per second. Need to be frequently cleaned or
disposed of.
fine screens - (answers)mechanically cleaned-less than 0.25in. two types are
disc and drum. Used for pretreatment of industrial wastes.
Comminutor - (answers)A circular grinder designed to grind the solids coming
through the screen into pieces.
Cyclone grit separator - (answers)enters at top angle and the flow velocity
causes a spinning action, the grit is concentrated at the bottom of funnel.
Centrifugal pump - (answers)A non-positive displacement pump that moves a
varying amount of fluid with each rotation using an impeller blade. Must be
primed and most common type.
Positive Displacement Pump - (answers)A type of pump that uses positive
pressure to move a fluid. Three types are diaphragm, screw, and piston. Keep
discharge valves open always. Used to move sludge, polymers, and chemicals.
