What do you do if a sewer line is plugged? - ANSWER Look for a manhole with reduced or
no flow when the manhole upstream is flowing full
The first action taken when discovering gasoline when you open a manhole is? - ANSWER
Call the police and fire departments
When do you wear splash goggles? - ANSWER When pouring chemicals
When is the DO the highest in stabilization ponds? - ANSWER Mid-afternoon
When do you do if a stabalization pond is going "septic"? - ANSWER Raise the level (the
oxygen level is raised by the additional water volume)
An operators license is subject to? - ANSWER Revocation, fine and imprisonment
How long are BOD tests incubated for? - ANSWER 5 days at 20* celcius
When do operators raise lagoon levels? - ANSWER Fall
When do operators lower lagoon levels? - ANSWER Spring
Where should you dig for a sewer line? - ANSWER 18 inches above where it is shown on
the pans
1
, Corrosion in manholes is caused by? - ANSWER hygrogen sulfide gas
What should you check before entering a manhole? - ANSWER lower explosive limits
both before and after
How is TSS measured? - ANSWER filtering though a gooch crucible
What is the greatest task for intermittent sand filters? - ANSWER cleaning of the sand
An automatic vent fan that runs during the time the door is open is considered? - AN-
SWER ventilation in a lift station
Trickling filter treatment does not follow? - ANSWER Lagoons
What is heavier chlorine or air? - ANSWER Chlorine
In an intermittent sand filter what is the top 1-3 inches of sand? - ANSWER The portion
replaced during normal operation
With ponds or lagoons the term "freeboard" refers to? - ANSWER The working area re-
maining above the water surface
A D.O. meter needle fluctuates when? - ANSWER The membrane in the probe needs at-
tention
Operations records are kept to help operators with? - ANSWER Process control
How long do discharge monitoring reports (DMRs) have to be kept? - ANSWER 3 years
2
no flow when the manhole upstream is flowing full
The first action taken when discovering gasoline when you open a manhole is? - ANSWER
Call the police and fire departments
When do you wear splash goggles? - ANSWER When pouring chemicals
When is the DO the highest in stabilization ponds? - ANSWER Mid-afternoon
When do you do if a stabalization pond is going "septic"? - ANSWER Raise the level (the
oxygen level is raised by the additional water volume)
An operators license is subject to? - ANSWER Revocation, fine and imprisonment
How long are BOD tests incubated for? - ANSWER 5 days at 20* celcius
When do operators raise lagoon levels? - ANSWER Fall
When do operators lower lagoon levels? - ANSWER Spring
Where should you dig for a sewer line? - ANSWER 18 inches above where it is shown on
the pans
1
, Corrosion in manholes is caused by? - ANSWER hygrogen sulfide gas
What should you check before entering a manhole? - ANSWER lower explosive limits
both before and after
How is TSS measured? - ANSWER filtering though a gooch crucible
What is the greatest task for intermittent sand filters? - ANSWER cleaning of the sand
An automatic vent fan that runs during the time the door is open is considered? - AN-
SWER ventilation in a lift station
Trickling filter treatment does not follow? - ANSWER Lagoons
What is heavier chlorine or air? - ANSWER Chlorine
In an intermittent sand filter what is the top 1-3 inches of sand? - ANSWER The portion
replaced during normal operation
With ponds or lagoons the term "freeboard" refers to? - ANSWER The working area re-
maining above the water surface
A D.O. meter needle fluctuates when? - ANSWER The membrane in the probe needs at-
tention
Operations records are kept to help operators with? - ANSWER Process control
How long do discharge monitoring reports (DMRs) have to be kept? - ANSWER 3 years
2
