Cheat Sheet 1 E

Question 1

What are the advantages of preventative maintenance?

Answer 1

Preventative maintenance results in improved performance

Question 2

A trench slope for type C soil should be what?

Answer 2

1 1/2 to 1 or greater

Question 3

For a lead and copper test the water should be in the pipeline for how long?

Answer 3

6 hours

Question 4

Where should mains be anchored

Answer 4

When the pipe changes size, direction, or at dead ends (restrained or thrust blocks)

Question 5

What metal is used as an expendable (sacrificial) anode in catholic protection system

Answer 5

Magnesium

Question 6

When does chlorine become corrosive

Answer 6

When water is added

Question 7

How long should MOR’s sanitary surveys and cross connection control program reports be kept for?

Answer 7

10 years

Question 8

What is caused when there is negative water pressure

Answer 8

Back siphonage

Question 9

Where should Coliform test samples be taken from

Answer 9

Locations tapped directly into the main

Question 10

Why is sodium thiosulfate added to a microbiological sample bottle?

Answer 10

To neutralize any residual chlorine left in the bottle