WT4/WT5 Flashcards

What threshold odor number or TON, T-O-N, begins to draw customer complaints? And that will be five TON.

So when it reaches five TON, customers will be able to complain, and they'll be able to smell, um, or have the threshold odor number.

They'll be able to, to sense what the odor is in those, uh, in that water test, and they'll be able to know that at five TON I can smell, um, the odors.

What are as-built drawings? They're corrected construction drawings showing changes made during field installation.

What does accountability mean? And that's very important for us as operators.

So what does, what does accountability mean? And that means an operator answers to those above them in the chain of command.

Accountability.

What is an air gap device used for? And it's to prevent backflow of non-potable water into a drinking water supply.

That's, uh, very important, uh, to know 'cause we don't want, uh, non-potable water to flow back into a drinking water supply.

That's a, a cross-connection issue and, uh, that is very, very bad.

So an air gap is a device used to prevent that.

And, um, you'll see them all around and, um, definitely, you know, places like hospitals and, you know, different ty-- nursing homes and, you know, different kinds of places, you know, like that or restaurants.

Anything, anything that's where, you know, you got a potable water source that is good or drinking water supply that you want a backflow device on those and an air gap on those so that it won't flow backwards into the, um, drinking water supply.

So where is an RPZ or reduced pressure zone backflow prevention device best tested? And, um, it is best tested while installed at the, at its intended point of use.

So an RPZ backflow prevention device best tested is while installed at its intended point of use.

What is an acceptable method of controlling cross connections? And that was back to the question four when we did, uh, question four, is to provide an air gap between the two systems.

So that is the, uh, acceptable method of controlling cross connections.

What is an example of waiting, of a waiting agent? That would be bentonite clay.

So bentonite clay is, uh, an example of a waiting agent.

Above what copper sulfate doses, uh, I can't speak.

I'm sorry.

Above what copper sulfate dosage can trout be killed? And that is point fourteen milligrams per liter.

So anything above point fourteen milligrams per liter of copper sulfate, trout in the lakes or river or whatever it is, usually a lake, they'll be killed, um, by that, uh, dosage of copper sulfate And, um, copper sulfate is usually put in a lake to, uh, control algae control and, uh, to control algae growth.

So, um, yeah, got to be careful with the copper sulfate dosage to not be above 0.14 milligrams per liter.

About how much, that is the next one, about how much alkalinity is required per milligrams of alum added.