preliminary soil salinity assessment - Mid Western Regional Council

Contents1 INTRODUCTION ............................................................................................................................... 11.1 Background ............................................................................................................................. 11.2 Urban Salinity Requirements .................................................................................................. 11.3 Preliminary Salinity Investigation Scope ................................................................................. 22 SITE INVESTIGATION ....................................................................................................................... 32.1 Desktop Review ....................................................................................................................... 32.2 Climate .................................................................................................................................... 52.3 Site Location and Land Use ..................................................................................................... 62.4 Site Inspection ......................................................................................................................... 82.5 Landscape Description and Site Observations of Salinity Indicators ...................................... 82.5.1 Topography and Surface Water Movement ................................................................... 92.5.2 Soils and Site Condition ................................................................................................... 92.5.3 Vegetation ..................................................................................................................... 132.6 Soil Sampling ......................................................................................................................... 142.6.1 Soil Sampling Sites......................................................................................................... 142.6.2 Soil Sampling Methodology .......................................................................................... 152.6.3 Soil Sampling for Laboratory Analysis ........................................................................... 163 SITE INVESTIGATION RESULTS AND DISCUSSION ......................................................................... 203.1 Results of Laboratory Analysis .............................................................................................. 203.2 Current Salinity Situation ...................................................................................................... 233.3 Implications for Urban Development ................................................................................... 234 CONCLUSIONS AND RECOMMENDATIONS ................................................................................... 245 REFERENCES .................................................................................................................................. 27Appendix A ................................................................................................................................................Appendix B ................................................................................................................................................Appendix C ................................................................................................................................................PRELIMINARY SOIL SALINITY ASSESSMENTiii