Scg 28045(Sl) · MCU18/0048

No stormwater runoff should be allowed to flow over any exposed excavated embankment faces or filled batters.

Areas adjacent existing gullies must be protected against stormwater scour as they are susceptible to instability
from erosion effects and over saturation. With this considered, structures should not be located adjacent the
edges of gullies. Also, the area adjacent the flanks of the gullies should be protected from scour via vegetation
and limiting surface grades.

All existing cross allotment flows from neighbouring properties must also be considered, managed and
maintained. Clear unhindered drainage paths must be provided and maintained during and beyond construction.
All constructed retaining walls must have effective drainage measures upslope and beyond the walls to relieve
any sub-surface water pressure/build-up. These drains must be maintained and flushed out regularly. To achieve
this we recommend bringing the upstream end of the drain to surface and capping off to allow future flush out.

We have attached guidelines for hillside construction extracted from Australian Geomechanics vol. 35 March
2000 – “Landslide Risk Management”. These references provide commentary on good design and building
practice.

We trust this meets with your requirements, however should you have any queries on the above matter please
contact the undersigned.

Yours faithfully




Sean Richardson RPEQ 5835
For and on behalf of
SCG CONSULTING ENGINEERS


Encs      Appendix A        -   Some Guidelines for Hillside Construction
          Appendix B        -   Landslip Mechanisms
          Appendix C        -   Landslip Risk Assessment Matrix




 SCG Consulting Engineers                                5                                   SCG Ref: 28045(SL)