Wastewater Practice Test (Florida) English Exam
Questions with Correct Answers
100% Verified Graded A+
1. 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
2. FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be ver- bally
reported to the state warning point no later than
Answer 24hrs from discovery
3. What is the 'rule of thumb' regarding pump packing?
Answer Never put rings of new packing over the old packing
4. According to FDEP chapter 62-60, FAC, a composite sample shall be used for which
test?
Answer Effluent CBOD
5. Chlorine residual can be measured in several ways, including the use
of DPD reagent, spectrophotometers and iodometric titration. Which of the following is al
an approved method?
,Answer Amperometric Titration
6. 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)
7. 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
8. 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
9. According to FDEP chapter 62-602, drinking water and wastewater treat- ment plant
operators, duties of operators includes reporting to the permittee and the department, as
soon as possible, but within 24hrs
Answer Any major interrup- tion of service
10. What could cause a centrifugal above ground pump to be noisy while running
Answer Debris caught in the impeller housing
11. 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
12. FDEP chapter 62-600 FC, domestic wastewater facilities, states that all treatment
plants shall be
Answer Fenced
13. 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
14. 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 Pres- surized water
15. Chlorine gas is how many times heavier than air
Answer 2.5
16. The combination of methane and can be very combustible-
Answer Oxygen
, 17. 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
18. A fixed sample is
Answer A sample purposely spiked by the lab technician for QA/QC
19. 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
20. 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
21. 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)
22. When properly adjusted, the rope packing on a centrifugal pump is de- signed to
leak how much?
Questions with Correct Answers
100% Verified Graded A+
1. 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
2. FDEP chapter 62-604.550 (a) FAC, requires a wastewater spill shall be ver- bally
reported to the state warning point no later than
Answer 24hrs from discovery
3. What is the 'rule of thumb' regarding pump packing?
Answer Never put rings of new packing over the old packing
4. According to FDEP chapter 62-60, FAC, a composite sample shall be used for which
test?
Answer Effluent CBOD
5. Chlorine residual can be measured in several ways, including the use
of DPD reagent, spectrophotometers and iodometric titration. Which of the following is al
an approved method?
,Answer Amperometric Titration
6. 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)
7. 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
8. 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
9. According to FDEP chapter 62-602, drinking water and wastewater treat- ment plant
operators, duties of operators includes reporting to the permittee and the department, as
soon as possible, but within 24hrs
Answer Any major interrup- tion of service
10. What could cause a centrifugal above ground pump to be noisy while running
Answer Debris caught in the impeller housing
11. 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
12. FDEP chapter 62-600 FC, domestic wastewater facilities, states that all treatment
plants shall be
Answer Fenced
13. 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
14. 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 Pres- surized water
15. Chlorine gas is how many times heavier than air
Answer 2.5
16. The combination of methane and can be very combustible-
Answer Oxygen
, 17. 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
18. A fixed sample is
Answer A sample purposely spiked by the lab technician for QA/QC
19. 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
20. 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
21. 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)
22. When properly adjusted, the rope packing on a centrifugal pump is de- signed to
leak how much?
