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Expansion fields?

Antonio Scotti

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Location: Spain

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posted 3 years ago

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Hi,
I just came across the term "Expansion field" in the context of waste water treatment systems.
Does anyone know what it refers to / any links to meaningful resources?
Thanks

Anne Miller

steward

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Location: USDA Zone 8a

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posted 3 years ago

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This sounds like what we had done to our septic system when we had our homestead.

The system did not work properly so we hired another septic co. to fix it.

This company used earth moving equipment to add an additional drain field.

I hope this explains what an expansion field is.

Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner

Antonio Scotti

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Location: Spain

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posted 3 years ago

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Anne Miller wrote:
I hope this explains what an expansion field is.

Thanks Anne, it does to a certain extent. I was actually hoping for some kind of standard terminology, like the term "leach field" which is quite widespread nowadays even in other languages, for example. So that I can look it up/seach for relevant literature.

Anne Miller

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posted 3 years ago

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There are several different septic system here in the US.

I have no idea what is used in Spain which your profile shows.

Here are some links about systems in the US:

https://www.epa.gov/septic/types-septic-systems

https://extension.umd.edu/resource/understanding-your-septic-system-and-how-it-works

Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner

Antonio Scotti

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posted 3 years ago

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Well thanks, but the term doesn't appear there either.... will continue to search.

Anne Miller

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posted 3 years ago

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The only place I have been able to find that term used is here:

In addition to the area needed for the leach field, space should be reserved for possible expansion (for example, a 50 percent expansion area is required in New York

a pdf file at deq.nd.gov

Maybe knowing where you saw the term might help.

Invasive plants are Earth's way of insisting we notice her medicines. Stephen Herrod Buhner
Everyone learns what works by learning what doesn't work. Stephen Herrod Buhner

Antonio Scotti

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Location: Spain

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posted 3 years ago

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Hi Anne,
thanks for trying to help. Highly appreciate it!
I found it on a client's questionnaire created by a permaculture consultancy. I asked them but got no answer so far ...
If I get a meaningful one I'll share it here.
Best

John C Daley

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Location: Bendigo , Australia

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posted 3 years ago

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I have dealt with septic systems and have not seen the word used.
But I did google around and found it mentioned but with no definition anywhere.
Its not often a septic system on a home is extended, but maybe on larger projects it is.
The guess its for future use sounds correct, but at the same time it seems unusual.

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John C Daley

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posted 3 years ago

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I found this on a legal page, which covers a variety of situations.
"Expansion Area means the area which is held in reserve and to be kept unencumbered in order to provide a place for additional leaching lines or plant capacity in the event of need."

I am guessing the creator of the permy document is being ' fancy' as we would say in Australia.

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