Hydrogeology C

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Magikarpmaster629
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Re: Hydrogeology C

Post by Magikarpmaster629 »

appleshake123 wrote: 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

Post by appleshake123 »

Magikarpmaster629 wrote:
appleshake123 wrote: 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 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

Post by Sleepy »

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

Post by driedmango »

Sleepy wrote:
Explain the difference between In-Situ and Ex-Situ.
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

Post by Sleepy »

driedmango wrote:
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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Re: Hydrogeology C

Post by driedmango »

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

Post by appleshake123 »

driedmango wrote: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.
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

Post by Magikarpmaster629 »

appleshake123 wrote:
driedmango wrote: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.
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

Post by appleshake123 »

Magikarpmaster629 wrote: 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.
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

Post by Magikarpmaster629 »

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