Civil Engineering Report

3 March 2022


               o     Cover open earth/ soil areas progressively (with concrete slabs and pavements or
                     mulch) to minimise areas of bare earth/ soil.
               o     Any stockpiles of excavated soil and demolition/ construction waste must be
                     located where risk of erosion and sedimentation is minimal, and must be protected
                     from wind and water erosion.
               o     Implement and maintain appropriate control measures such as catch drains and
                     sediment fences to prevent ponding of stormwater or discharge of stormwater
                     from the site to adjacent properties.
               o     Provision of spill/ pollution control equipment that is readily accessible to clean up
                     spills and leaks.
               o     Ensure spill/ pollution control measures are available and maintained in working
                     condition.
               o     Sediment contained by the sediment control devices such as sandbags, sediment
                     fences and containment bunds must be frequently removed and placed in a
                     controlled area.
               o     Implement an inspection schedule for any spill or leaks of any potential polluting
                     areas or activities.

5.5.4 Erosion and Sediment Control Management Goals

    •    Licenses, approvals, permits and inspection reports are in order.
    •    Sediment or pollution control devices such as sandbags, sediment fences and containment
         bunds are in place, maintained and effective.
    •    Spill/ pollution control equipment is readily accessible at designated locations.
    •    No accumulated sediment is contained by the sediment control devices such as hay bales,
         sediment fences and containment bunds.
    •    No sediment exceeding a depth of 300mm in the pollution control devices (e.g. silt trap).

5.5.5 Erosion and Sediment Control Implementation Program

    •    Licenses, permits or approvals for each environmentally relevant activity must be obtained
         prior to the commencement of the particular activity.
    •    Appropriate control measures such as sediment fences, temporary construction entry/ exit
         sediment traps, pollution containment devices (e.g. sandbags), stormwater diversion and
         administrative controls must be installed and established prior to commencement of the
         earthworks and construction activities.
    •    Pollution control devices such as spill control equipment must be inspected on a regular
         basis (at least weekly).
    •    Other sediment and pollution control equipment such as containment bunds, hay bales and
         sediment fences must be inspected on a regular basis (at least daily).
    •    Inspection for any leaks, spills or potential contaminating activity must be performed on a
         regular basis (at least daily).
    •    Remove accumulated sediment or other contaminants from sediment/ pollution control
         devices on a regular basis.
    •    All erosion and sediment control measures must be inspected within 24 hours of expected
         rain and within 18 hours of a rainfall event.




Excellence with Economy in Engineering                                                                        10
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