Approved Plan - Landscape Specification prepared by URBIS - OPW24/0110

  On Grade Soil Media – Gardens


 Quality – Soil must be free from any ‘unwanted materials’
 Physical properties particle sizes

    Property                                Units          Target Range

    Texture, preferred range                n/a            Sandy loam to clay loam
    (OM) Organic matter content             % dwb (dry     Medium Organic Range 10 -15%
                                            weight
                                            basis)
    Permeability                            mm/hour        > 20 (@ 32 drops by McIntyre Jakobsen)
    Wettability (AS4419)                    mm/min         >5
    Dispensability in water                                1 or 2 (AS 4419 Category)
    Large particles (naturally occurring)
    2 – 20mm                                % w/w          < 20
    > 20mm                                  % w/w          < 10
    Visible contaminants > 2mm (glass,      % w/w          < 0.5
    plastic and metal

Chemical properties

    Property                                Units        Target Range

    pH in water (1:5) standard range        pH units     5.4 – 6.8
    pH in CaCl2 (1:5) standard range        pH units     5.2 – 6.5
    pH in CaCl2 (1:5) alkaline range        pH units     6.8 – 8.0
    pH in CaCl2 (1:5) alkaline range        pH units     6.5 – 7.5


    Electrical conductivity (1:5) (EC)      dS/m         < 0.75
    Phosphorus – P-tolerant / standard      mg/kg        30 - 100
    plants
    Phosphorus for P-sensitive plants,      mg/kg        < 20
    alkaline soil methods 9B1 or 9C1
    Sodium (NA)                             % of eCEC    <7%
    Potassium (K)                           % of eCEC    3 – 15 %
    Calcium (Ca) method 18F1 (or 15A1       % of eCEC    50 - 80
    in alkaline soils)
    Exchangeable magnesium (Mg)             % of eCEC    10 - 30
    Exchangeable aluminium (Al)             % of eCEC    <5
    Exchangeable Ca/Mg ratio                w/w          3-9
    Available iron (Fe)                     mg/kg        100 - 400
    Available manganese (Mn)                mg/kg        25 - 100
    Available zinc (Zn)                     mg/kg        5 - 30
    Available copper (Cu)                   mg/kg        1 - 15
    Available boron (B)                     mg/kg        0.5 - 5
    Available nitrogen (nitrate N +         mg/kg        > 20
    ammonium N)



URBIS
URB-P0003847-000-SP.DOCX                                                                            PAGE   34