Landscape Specification

CONTENTS


 On Grade soil media – B-Horizon


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

 Physical Properties

                                                             Units         Target range
         Property
                                                                           Loamy sand to Sandy
         Texture, preferred range                            n/a           loam
         Organic matter                                      % dwb         <5
         Permeability (@ 16 drops by McIntyre Jakobsen)      mm/h          > 100
         Wettability                                         mm/min        >5
         Dispensability in water                             1 or 2        (AS4419) Category
         Large particles (naturally occurring)
         2–20 mm                                             % w/w         < 20
         > 20 mm                                             % w/w         < 10
         Visible contaminants > 2mm (glass, plastic and
         metal                                               % W/W         < 0.5


 Chemical Properties

                                                                     Target
          C2. Chemical properties                     Units          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
          Electrical conductivity (1:5)               dS/m           < 0.5
          Phosphorus – P-tolerant/standard plants.    mg/kg          30–80
          Phosphorus for P-sensitive plants           mg/kg          < 20
          Sodium (Na)                                 % of ECEC      < 7%
          Potassium (K)                               % of ECEC      3–10%
          Calcium (Ca)                                % of ECEC      60–80
          Exchangeable magnesium (Mg)                 % of CEC       15–25
          Exchangeable aluminium (Al)                 % of CEC       <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 N (ammonium-N + nitrate-N)        mg/kg          > 25




URBIS
URB-SPC-LAN-P0025138 - IFC.DOCX                                                                  PAGE   51