SUPERSEDEDApproved Plan OPW22-0123

 On Slab Soil Media B - Gardens Lower Horizon


 Quality – Soil must be free from any ‘unwanted materials’

 Physical Properties

                                                   Units                     Target range
        Property
        Texture, preferred range                   n/a                       Gravelly loamy sand to organic
                                                                             sandy loam
        Air-filled porosity (AFP)                  %                         ≥ 10
        Chloride                                   %                         ≥ 40
        Water holding capacity                     %                         ≥ 30
        Permeability (@ 32 drops by McIntyre       mm/h                      > 40
        Jakobsen)
        Saturated Density                          kg/L                      < 1.2
        (OM) Organic matter content                % dwb (dry weight         Low Organic Range 3 – 5%
                                                   basis)
        Wettability                                min                       <5
        Dispensability in water                                              1 or 2 (AS4419) Category
        Large particles in the largest dimension
        < 2 mm                                     % w/w                     30–70
        2–10 mm                                    % w/w                     10 –20
        10–20 mm                                   % w/w                     5–10
        20–50 mm                                   % w/w                     <5
        > 50 mm                                    % w/w                     0


 Chemical Properties

                                                   Units      Target range
        C2. Chemical properties
        pH in water (1:5) Standard range           pH units   5.4–6.8
        Electrical Conductivity (1:1.5)            dS/m       < 2.2
        Chloride                                   mg/L       ≤ 200
        Ammonium-N (NH4)                           mg/L       ≤ 100
        Ammonium-N + nitrate-N (NH4 + NO3)         mg/L       ≥ 50
        Nitrogen draw-down index (NDI)             -          ≥ 0.7
        Toxicity index                             mm         ≥ 70
        Phosphorus – P standard range              mg/L       8–40
        Low phosphorus – P (P-sensitive plants)    mg/L       <3
        Potassium (K)                              mg/L       50–250
        Sulphate (SO4)                             mg/L       ≥ 40
        Calcium (Ca)                               mg/L       ≥ 80
        Magnesium (Mg)                             mg/L       ≥ 15
        Ca:Mg ratio                                –          1.5–10
        K:Mg ratio                                 –          1–7
        Sodium (Na)                                mg/L       ≤ 130
        Iron (Fe)                                  mg/L       ≥ 35
        Cooper (Cu)                                mg/L       0.4 - 15
        Zinc (Zn)                                  mg/L       0.3 - 10
        Manganese (Mn)                             mg/L       1 - 15
        Boron (B)                                  mg/L       0.02 – 0.65




URBIS
URB -P0003847-001-SP                                                                                          PAGE   17