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PERCOLATION AREA...PRICE

  • 31-08-2008 1:59pm
    #1
    Registered Users, Registered Users 2 Posts: 1,177 ✭✭✭


    Hi,need some info on this paragraph.I got this back form the council requesting further info. Site is in Kilkenny,120mtrsX30mtrs. Percolation area is 20mtrsX12mtrs. Site is wet enough. T value test showed it was above 90. This is what i got...

    Percolation T test results submitted indicate that the percolation value is greather than 90.The existing soil characteristics render the site unsuitable for onsite wastewater treatment & disposal. You are invited,however,to consider the feasibility of excavating & replacing the poorly draining CLAY material to the shale layer reported at 1.8m below ground level (BLG).Where such works are considered feasible you are required to carry out additional percolation tests with the invert of the percolation test holes at 1.8m (BGL) to determine the permeability of the underlying shale. The proposals shall also require separation of replacement material from in situ material using geomembrane liner.

    Can someone throw light on this,if you had to do this. will it cost much,is it worth doing.


Comments

  • Registered Users, Registered Users 2 Posts: 87 ✭✭damiand


    Common enough practice. Shouldnt cost any more than a few thousand. Who was stupid enough to let you apply for permission with a t value of more than 90. You mentioned nothing of a p value. A few years ago obove 90 would have been a straight refusal in Kilkenny. You can count yourself lucky in that regard.

    I will pm a guy who i would recommend in kk.


  • Registered Users, Registered Users 2 Posts: 1,177 ✭✭✭fiestaman


    damiand wrote: »
    Common enough practice. Shouldnt cost any more than a few thousand. Who was stupid enough to let you apply for permission with a t value of more than 90. You mentioned nothing of a p value. A few years ago obove 90 would have been a straight refusal in Kilkenny. You can count yourself lucky in that regard.

    I will pm a guy who i would recommend in kk.

    It sounds like alot of trouble for planning permission. it dosent give a P value in letter. i dont no why they didnt just fail it. i wounder what my chances are of passing when test is done a shale layer. How can that guy help, is he part of council? i didnt want to go changing from guy im with.
    Few thousand?? €3000..€6000...€10000....???


  • Registered Users, Registered Users 2 Posts: 2,292 ✭✭✭RKQ


    Basically you are being asked to excavate to shale layer, shown on your test results at a depth of 1.8m. You are required to carry out further percolation tests at this level.
    If the results are favourable, it may be possible to remove the existing clay and replace with a more permable soil or polishing filter. In lay terms an inverted constructed percolation area!

    The person that carried out your test should be able to explain this to you and complete same at a small fee IMO.

    On a positive note it may be possible to replace soil and install a treatment system. It is not a refusal... try to solve the problem, it will be worth it.

    Good topsoil can cost €180 per truck circa 20 tonne.


  • Registered Users, Registered Users 2 Posts: 1,177 ✭✭✭fiestaman


    xxxx


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