SER 03 Water Quality & Wastewater Storage

Critical Controls

• Bunded storage areas in place for all fuels, chemicals and oils (minimum 110% of the stored capacity) including external bunded storage for generators with fuel storage capacity of greater than 100 litres
• All generators have internal bunds. External bunded storage provided for generators and fuel storage systems that are stored over or within 20 metres of waterways.
• All generator systems with external fuel storage are bunded and installed and commissioned by competent personnel
• Stormwater that collects in basins, excavations and drainage systems is treated and tested prior to discharge in accordance with legislated requirements, licence or approval requirements
• Plant and equipment operating over water has external protection for hydraulic and fuel lines. Barges also have installed controls to prevent surface runoff into waterways
• Concrete and kibble washout areas are installed and maintained to ensure no impact to surface or groundwater
• Mulch stockpile sites are located on elevated ground within the work footprint, away from water and creek lines, and at least 20 metres from a watercourse
• Full circumference bunds greater than 300mm high are installed for all mulch/cleared vegetation material stockpiled for longer than one month. Temporary mulch / cleared vegetation stockpile bunds are provided with a stabilised temporary spillway to prevent damage during major rainfall events.
• A sump is created downstream of the mulch bund to contain runoff from the design rainfall event
• Telemetry and shutoff systems implemented for all critical pump lines and those that operate out of hours