Hydrogeology C

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Magikarpmaster629
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Re: Hydrogeology C

Postby Magikarpmaster629 » March 3rd, 2017, 8:10 pm

Name and describe three types of wells.
I'm not sure this is what you're looking for but: Unconfined well- A well in an unconfined aquifer; water rises to water table level
Artesian well- Well in a confined aquifer; water rises to a height based on the pressure of the water in the confined aquifer called the piezometric surface
Flowing artesian well- An artesian well in which the piezometric surface is above the ground surface, causing water to rise above the ground
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Re: Hydrogeology C

Postby appleshake123 » March 3rd, 2017, 8:30 pm

Name and describe three types of wells.
I'm not sure this is what you're looking for but: Unconfined well- A well in an unconfined aquifer; water rises to water table level
Artesian well- Well in a confined aquifer; water rises to a height based on the pressure of the water in the confined aquifer called the piezometric surface
Flowing artesian well- An artesian well in which the piezometric surface is above the ground surface, causing water to rise above the ground
You're correct.
I should have specified
I wanted to go to more construction portion of wells like a [url=https://water.usgs.gov/edu/earthgwwells.html]dug, driven, and drilled wells[/url] as I've been seeing those question appear more often recently.
Your turn.
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Re: Hydrogeology C

Postby Sleepy » March 7th, 2017, 6:34 pm

Question
Explain the difference between In-Situ and Ex-Situ.
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Re: Hydrogeology C

Postby driedmango » March 7th, 2017, 7:42 pm

Question
Explain the difference between In-Situ and Ex-Situ.
Answer
In-situ means the remediation takes place at the site of contamination, and ex-situ means the contaminated groundwater has to be moved somewhere else (like to a treatment plant or whatever) to be remediated (or you have to excavate the contaminated area).
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Re: Hydrogeology C

Postby Sleepy » March 7th, 2017, 7:55 pm

Answer
In-situ means the remediation takes place at the site of contamination, and ex-situ means the contaminated groundwater has to be moved somewhere else (like to a treatment plant or whatever) to be remediated (or you have to excavate the contaminated area).
Correct! Your turn
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[size=80][u]MC Barons | Tiger | North Pocono | Regionals | States[/u] Dynamic: 2 | 14 | 2 | 2 | 9 Remote: 9 | 18 | 2 | 1 | 8 Hydro: 11 | 18 | 3 | 2 | 2 Game On: 3 | 1 | 3 | 1 | 21[/size]
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Re: Hydrogeology C

Postby driedmango » March 8th, 2017, 6:17 pm

This question showed up on the UPenn test:
Name the three parts of the classification system the EPA uses for the ground water of the United States.
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Re: Hydrogeology C

Postby appleshake123 » March 9th, 2017, 12:26 pm

This question showed up on the UPenn test:
Name the three parts of the classification system the EPA uses for the ground water of the United States.
Three Classes
Class I - [b]Special Ground water[/b]. They are very high valued resources being an important source of drinking water or for the ecosystem, but they are extremely vulnerable to contamination. Class II - [b] Current and potential sources of drinking water and water having other beneficial uses[/b]. Groundwater that is in use or potentially available that is not class I is classified as this. Class III - [b]Groundwater not a potential source of drinking water and of limited beneficial use[/b]. Groundwater that is contaminated beyond levels of allowed use for drinking or other beneficial purpose.
Here's the next question. What is TDS and what relation does it have with EPA's groundwater classification.
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Re: Hydrogeology C

Postby Magikarpmaster629 » March 14th, 2017, 3:43 pm

This question showed up on the UPenn test:
Name the three parts of the classification system the EPA uses for the ground water of the United States.
Three Classes
Class I - [b]Special Ground water[/b]. They are very high valued resources being an important source of drinking water or for the ecosystem, but they are extremely vulnerable to contamination. Class II - [b] Current and potential sources of drinking water and water having other beneficial uses[/b]. Groundwater that is in use or potentially available that is not class I is classified as this. Class III - [b]Groundwater not a potential source of drinking water and of limited beneficial use[/b]. Groundwater that is contaminated beyond levels of allowed use for drinking or other beneficial purpose.
Here's the next question. What is TDS and what relation does it have with EPA's groundwater classification.
TDS is Total Dissolved Solids. It's a measure of how saturated the water is with solids, similar to hardness of water. The EPA puts limits on how high the TDS can be and still be safe for water usage.
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Re: Hydrogeology C

Postby appleshake123 » March 15th, 2017, 6:27 am

TDS is Total Dissolved Solids. It's a measure of how saturated the water is with solids, similar to hardness of water. The EPA puts limits on how high the TDS can be and still be safe for water usage.
Correct.
Additionally
for others, one of the ways to classify a class III groundwater is having TDS >10,000 mg/L
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Re: Hydrogeology C

Postby Magikarpmaster629 » March 15th, 2017, 6:35 am

What is the piezometric surface of a confined aquifer? How does it differ from the water table?
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Re: Hydrogeology C

Postby Magikarpmaster629 » April 3rd, 2017, 8:15 am

(anyone still here?)
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Re: Hydrogeology C

Postby 18alia » April 6th, 2017, 2:42 pm

(anyone still here?)
Now that I'm doing this event for state, I guess I'll start this back up: A piezometric surface, also known as a potentiometric surface, is the elevation to which water in a confined well will rise if a well pierces it. This is different from the water table, which is the natural elevation of groundwater without a well. Now, my question:
What is the difference between porosity and permeability?

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Re: Hydrogeology C

Postby Magikarpmaster629 » April 6th, 2017, 2:47 pm

(anyone still here?)
Now that I'm doing this event for state, I guess I'll start this back up: A piezometric surface, also known as a potentiometric surface, is the elevation to which water in a confined well will rise if a well pierces it. This is different from the water table, which is the natural elevation of groundwater without a well. Now, my question:
What is the difference between porosity and permeability?
(typically we wait for the question-asker to confirm if we are right before asking the question, but you're fine) Porosity is simply a measure of the percent volume of pore or void space in a rock or soil sample. Permeability is a measure of how easily fluids can pass through the rock or soil sample.
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Re: Hydrogeology C

Postby appleshake123 » April 7th, 2017, 5:03 am

(typically we wait for the question-asker to confirm if we are right before asking the question, but you're fine)
I think asking the question directly after answering for a low-participation thread such as this is good. This thread takes forever for some people to comfirm and answer quesitons compared to threads like astronomy.
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Re: Hydrogeology C

Postby Magikarpmaster629 » April 15th, 2017, 6:53 am

Alright, I guess since this died I'll take my turn:

List three assumptions made by the hydrogeology challenge, and explain how they fail to predicts groundwater movement in reality.
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