1|Page
WASTEWATER FLORIDA PRACTICE EXAM|| ACCURATE AND
FREQUENTLY TESTED QUESTIONS AND 100% CORRECT
ANSWERS WITH RATIONALES|| LATEST AND COMPLETE
UPDATE WITH EXPERT VERIFIED SOLUTIONS
According to FDEP chapter 62-600.440 (4) (b) FAC, basic level disinfection is described
as: - ANSWER: A chlorine residual of 0.5 mg/L for 15 minutes at peak hourly flow
FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be verbally
reported to the state warning point no later than: - ANSWER: 24hrs from discovery
What is the 'rule of thumb' regarding pump packing? - ANSWER: Never put rings of
new packing over the old packing
According to FDEP chapter 62-60, FAC, a composite sample shall be used for which
test? - ANSWER: Effluent CBOD
Chlorine residual can be measured in several ways, including the use of DPD reagent,
spectrophotometers and iodometric titration. Which of the following is also an
approved method? - ANSWER: Amperometric Titration
Chapter 62-601, Domestic wastewater treatment plant monitoring, states that on-
site tests for total residual chlorine, pH, and can be performed under the
direction of a certified operator: - ANSWER: Dissolved Oxygen(DO)
,2|Page
Starting this type of pump against a closed valve can cause major damage to the pump,
pump piping, the operator, or all three - ANSWER: Positive displacement pump
These types of samples may be used for CBOD5 and nutrients at flows less than 100,000
GPD, according to chapter 62-601 - ANSWER: Grab samples
According to FDEP chapter 62-602, drinking water and wastewater treatment plant
operators, duties of operators includes reporting to the permittee and the department,
as soon as possible, but within 24hrs: - ANSWER: Any major interruption of service
What could cause a centrifugal above ground pump to be noisy while running - ANSWER:
Debris caught in the impeller housing
According to FDEP chapter 62-601 FAC, Domestic wastewater treatment plant
monitoring, discharge monitoring reports (DMRs) for the previous month must be
submitted to the department by the day of the current month? -
ANSWER: 28th day
FDEP chapter 62-600 FC, domestic wastewater facilities, states that all treatment
plants shall be - ANSWER: Fenced
As the operator of a primary clarifier, you notice a black and odorous septic
wastewater leaving the clarifier. What is the probable cause? - ANSWER: Improper
sludge removal
A fire has started in the maintenance shop due to an ignition of petroleum oil. Which
type of fire extinguisher should NOT be used to fight the fire? - ANSWER: Pressurized
water
, 3|Page
Chlorine gas is how many times heavier than air - ANSWER: 2.5
The combination of methane and can be very combustible -
ANSWER: Oxygen
Plant effluent coliform count fails to meet the required standards for disinfection.
Chlorine residual is normal. Disinfectant supplies ARE NOT a problem. What is the
probable cause? - ANSWER: Contact time too short
A fixed sample is: - ANSWER: A sample purposely spiked by the lab technician for
QA/QC
According to FDEP chapter 62-602 FAC, an operator could have his license permanently
revoked for: - ANSWER: Falsified or misrepresented reports, logs, or lab sheets
What process do the bacteria perform in the stabilization(re-aeration) tank in the
contact stabilization process? - ANSWER: Absorption and digestion of the waste material
they collected
A screenings dumpster at the head works of the treatment plant is full at the end of
the day. The dumpster is 6ft tall, 10ft long, and 8ft wide. How many cubic yards of
screenings must be disposed of in a 30 day month? - ANSWER: 533 (6 x 10 x 8 = 480)
(480 /27 = 17.7) (17.7 x 30 = 533)
When properly adjusted, the rope packing on a centrifugal pump is designed to leak
how much? - ANSWER: One drip per second
WASTEWATER FLORIDA PRACTICE EXAM|| ACCURATE AND
FREQUENTLY TESTED QUESTIONS AND 100% CORRECT
ANSWERS WITH RATIONALES|| LATEST AND COMPLETE
UPDATE WITH EXPERT VERIFIED SOLUTIONS
According to FDEP chapter 62-600.440 (4) (b) FAC, basic level disinfection is described
as: - ANSWER: A chlorine residual of 0.5 mg/L for 15 minutes at peak hourly flow
FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be verbally
reported to the state warning point no later than: - ANSWER: 24hrs from discovery
What is the 'rule of thumb' regarding pump packing? - ANSWER: Never put rings of
new packing over the old packing
According to FDEP chapter 62-60, FAC, a composite sample shall be used for which
test? - ANSWER: Effluent CBOD
Chlorine residual can be measured in several ways, including the use of DPD reagent,
spectrophotometers and iodometric titration. Which of the following is also an
approved method? - ANSWER: Amperometric Titration
Chapter 62-601, Domestic wastewater treatment plant monitoring, states that on-
site tests for total residual chlorine, pH, and can be performed under the
direction of a certified operator: - ANSWER: Dissolved Oxygen(DO)
,2|Page
Starting this type of pump against a closed valve can cause major damage to the pump,
pump piping, the operator, or all three - ANSWER: Positive displacement pump
These types of samples may be used for CBOD5 and nutrients at flows less than 100,000
GPD, according to chapter 62-601 - ANSWER: Grab samples
According to FDEP chapter 62-602, drinking water and wastewater treatment plant
operators, duties of operators includes reporting to the permittee and the department,
as soon as possible, but within 24hrs: - ANSWER: Any major interruption of service
What could cause a centrifugal above ground pump to be noisy while running - ANSWER:
Debris caught in the impeller housing
According to FDEP chapter 62-601 FAC, Domestic wastewater treatment plant
monitoring, discharge monitoring reports (DMRs) for the previous month must be
submitted to the department by the day of the current month? -
ANSWER: 28th day
FDEP chapter 62-600 FC, domestic wastewater facilities, states that all treatment
plants shall be - ANSWER: Fenced
As the operator of a primary clarifier, you notice a black and odorous septic
wastewater leaving the clarifier. What is the probable cause? - ANSWER: Improper
sludge removal
A fire has started in the maintenance shop due to an ignition of petroleum oil. Which
type of fire extinguisher should NOT be used to fight the fire? - ANSWER: Pressurized
water
, 3|Page
Chlorine gas is how many times heavier than air - ANSWER: 2.5
The combination of methane and can be very combustible -
ANSWER: Oxygen
Plant effluent coliform count fails to meet the required standards for disinfection.
Chlorine residual is normal. Disinfectant supplies ARE NOT a problem. What is the
probable cause? - ANSWER: Contact time too short
A fixed sample is: - ANSWER: A sample purposely spiked by the lab technician for
QA/QC
According to FDEP chapter 62-602 FAC, an operator could have his license permanently
revoked for: - ANSWER: Falsified or misrepresented reports, logs, or lab sheets
What process do the bacteria perform in the stabilization(re-aeration) tank in the
contact stabilization process? - ANSWER: Absorption and digestion of the waste material
they collected
A screenings dumpster at the head works of the treatment plant is full at the end of
the day. The dumpster is 6ft tall, 10ft long, and 8ft wide. How many cubic yards of
screenings must be disposed of in a 30 day month? - ANSWER: 533 (6 x 10 x 8 = 480)
(480 /27 = 17.7) (17.7 x 30 = 533)
When properly adjusted, the rope packing on a centrifugal pump is designed to leak
how much? - ANSWER: One drip per second
