Awesome Aquifers B

[Skink]

but within the aquifer, how would you demonstrate it?

So you're asking to do it without external filters? Without hazardous substances, you can't really. Well, okay, there's a demo that I wouldn't rely on: have a small sponge cut-out (a "plant") to demonstrate phytoremediation. The plant is within the aquifer. If you don't want a filter/set of filters, I'd suggest you pump out the contaminated water, "filter it" (ie not really), and recharge with clean water provided by the supervisor. You have to practice to get quick at doing this, but it's effective.

Whatever you use, do NOT use Kool-Aid as your contaminant. Supervisors do not appreciate the mess that junk leaves behind, and, besides...you don't want bugs coming after your aquifer.
Shy away from ammonia. It's hazardous. I'd say if it isn't safe to drink, don't bring it.

[FueL]

Are you allowed to do demonstrations outside of the actual aquifer?

[Skink]

I've addressed this one before...it probably depends on how strictly the supervisor adheres to the rules. If it were me, so long as the side containers don't exceed 3.0L total volume when added to your regular aquifer, I'm sure you're okay. However, I would try your hardest to demonstrate everything in the aquifer to be on the safe side. Go out of your way now to figure out how you'll demo everything within your aquifer just in case. For example, my team right now has a small container we use to show Artesian aquifer with, but we're prepared to modify or regular one if instructed to by the supervisor.
I wish there was a clarification about this. Here's the thing...

You may wish to bring additional smaller containers (drinking cups, beakers,
squeeze bottles, 35mm film canisters, salt shakers, etc) to put inside your larger
container, or use externally to store water or a ―mock‖ contaminant. This use of
additional containers is permitted.

Here they say you can have the external containers, but they never permit you to use them for demonstrating within themselves.

As far as, say, showing porosity in a pile of rocks your hands, it's the same deal. If they let you, go for it, but be ready to do it in the model if they require it. I don't see why it would hurt to ask beforehand if you're concerned (and they're not behind schedule).

[TYG]

So it wouldn't be allowed to have smaller containers within your 3 liter container to demonstrate something like porosity?

[Skink]

No, that's fine--read the quote again. They say it's "permitted". I've done that in the past, and it's the most effective way to show it.

[TYG]

Oh okay, I guess I didn't read that carefully, sorry. Thanks.

[mnstrviola]

what is the difference between drawdown, depletion and overwithdrawal?

[Skink]

Here's my attempt from a couple pages back...

It seems to me that it goes like this. Depletion is discharge over time. Overwithdrawal is depletion over time.

I put them in that order because I put depletion and withdrawal together. Overwithdrawal has to be more water loss than withdrawal no matter what, right?...
...feel free to take a stab at it if you got a better approach.

Depletion is discharge specific to pumping, though I'm not sure about the magnitude--or how much/to what extent--though. Might be worth looking into where it goes. I think it's closest to discharge than the others.

[mnstrviola]

I see. Thanks btw 100th post

[Epicfail]

At regionals, two concepts were porosity between two materials, and permability between two materials...whats the exact difference? (yes i know, i fail...Hence the name)