Landscape Specification

CONTENTS


  On Grade soil media – A-Horizon


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

         Property                            Units           Target Range

         Texture, preferred range            n/a             Sand loam to clay loam

         Organic matter content              % dwb           2-5
         Permeability                        mm/hour         > 20 (@16 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          % w/w           < 0.5
         (glass, 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)       dS/m             < 0.5
         Phosphorus – P-tolerant /           mg/kg            30 - 100
         standard plants
         Phosphorus for P-sensitive          mg/kg            < 20
         plants, alkaline soil methods 9B1
         or 9C1
         Sodium (NA)                         % of             <7%
                                             eCEC
         Potassium (K)                       % of             3 – 10 %
                                             eCEC
         Calcium (Ca) method 18F1 (or        % of             60 - 80
         15A1 in alkaline soils)             eCEC
         Exchangeable magnesium (Mg)         % of             15 - 25
                                             eCEC
         Exchangeable aluminium (Al)         % of             <5
                                             eCEC
         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            > 25
         ammonium N)




URBIS
URB-SPC-LAN-P0025138 - IFC.DOCX                                                                      PAGE   50