Answers

2016-03-10T09:51:37+05:30
Pits used to temporarily store produced water prior to injection for enhanced recovery of or disposal, off-site transport, or Surface-water discharge.
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2016-03-10T12:20:49+05:30
             I think you terminology is specific to the area you are working in or studying.

The "perc" test discussed above is the standard way to determine if a septic field can be built without an "engineered" field.

However, there are other uses of those terms - many in the area of environmental and civil engineering.

Generally I would think that a percolation pit is any pit that is designed to allow fluid place in the pit to "percolate" into the ground, i.e., drain. A recharge well is typically a well with a water supply that is used to recharge a water supply -- as is a recharge trench (used to direct the water supply to a recharge point).

For instance a recharge well could also mean a well used to recharge an acquifer by allowing water to seep down to the acquifer (and a recharge trench can direct water to a surface water source), etc.

I am sure there may be more specific definitions that you mean depending upon the context of how you are using the terms.   
       
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