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- Newsgroups: misc.rural
- Path: sparky!uunet!news.mentorg.com!sunbeam!brucej
- From: brucej@sunbeamcom (Bruce Johnson)
- Subject: Re: Raised Beds on leach lines.
- Message-ID: <1993Jan28.162014.21837@news.mentorg.com>
- Sender: brucej@sunbeam (Bruce Johnson)
- Date: Thu, 28 Jan 1993 16:20:14 GMT
- References: <C1F5nH.Mq3@srgenprp.sr.hp.com> <1993Jan26.152520.17699@news.mentorg.com> <1k64tjINN3c6@seven-up.East.Sun.COM>
- Nntp-Posting-Host: sunbeam.mentorg.com
- Organization: mentor
- Keywords:
- Followup-To:
- Lines: 47
-
- In article <1k64tjINN3c6@seven-up.East.Sun.COM>, barrya@scout.East.Sun.COM (Barry Andreasen - Sun BOS Hardware) writes:
- |> /tmp/rrn5482.5168
- |> >In article <C1F5nH.Mq3@srgenprp.sr.hp.com>, jefftb@sr.hp.com (Jeff Brown) writes:
- |> >|>
- |> >|> Does anyone out there see problem with putting raise beds for gardening
- |> >|> on the septic sysem leach lines? I'm not covering the tank or any dist-
- |> >|> ribution boxes. The lines are fairly deep.
- |> >|>
- |> >|> Thanks
- |> >|> Jeff Brown
- |> >
- |> >I do. From my nieve understanding: your leach lines are buried at a
- |> >particular depth depending on your perc. If you put more material
- |> >on top of your leach lines, you'll be changing your perc. The tank's
- |> >actually the best thing to cover, all you really need access to is
- |> >"the lid".
- |> >
- |> >Correct me if I'm wrong...
- |> >
- |> >brucej@mentorg.com
- |>
- |> Perc is not the ability for moisture to rise to the surface, it is the
- |> ability for it to soak into the earth. To determine this 2 things are
- |> done, you do a 'perc' test (dig a hole and watch the rate some applied
- |> water drops), and you determine the 'deep hole' properties of the
- |> soil. The perc determines how much area the field requires, but the
- |> depth of a leach field is determined by the frost line in the area
- |> and the high water point of the soil (i.e. you want to be between
- |> these) that is found in the deep hole test. Adding more soil would
- |> only increase the range between these two points (by raising the frost
- |> line). This is exactly what is done with more expensive septic
- |> systems where soil is brought in to raise the frost line thus
- |> providing the necessary space between it and a high water table. The
- |> only potential problem with planting over a leach field is the
- |> potential root invasion, but this can be avoided by sticking to annual
- |> crops that have short root systems.
- |> -barry andreasen
- |> ------------- standard disclaimer -----------------------
- |>
- |>
- |>
-
- This implies that something along the lines of a cement pad over top
- is fine? Of course this would be a bad idea if you ever needed to
- repair/replace any of your leach field, but for no other reason?
-
- bruce
-