2 Renmark to border LAP area assessment - EPA - Sa.gov.au

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River Murray and Lower Lakes catchment risk assessment for water quality: Results and management options Current and potential future options 222 Lead stakeholder(s) Research and development Capacity building Monitoring Compliance Policy planning Activity Stressor EV Capital on-ground works EPA, Coorong Council Examine risks in more detail, in particular runoff and leakage risks Monitor for leakage if further research supports this Landfill, disused Narrung None recommended until risk investigated in more detail Alexandrina and Coorong councils, LAP groups, local community Education and awareness raising of owners of riparian land on best practices for bank stabilisation Bank erosion TU Management of vegetation cover on banks, use of geotextile bags EPA, fuel store owners Enforce Water Quality EPP if required Spill kits present and users educated in their operation Bunding of all fuel stores that pose a risk Fuel stores/refueling facilities DTEI, EPA Investigate best options for treating or containing washdown water Training in emergency response procedures Presence of spill kits Ferry, Narrung HY Treatment/ containment of washdown runoff water. Consultation is currently in progress
River Murray and Lower Lakes catchment risk assessment for water quality: Results and management options 8 Summary of risk assessment results The risk assessment results for all the LAP areas along the River Murray, Lower Lakes and Coorong are summarised in this chapter for the different environmental values and levels of risk for various types of hazards. 8.1 Summary of results by environmental value Aquatic ecosystem environmental value A small proportion of total risks to the aquatic ecosystem environmental value were of a high to very high level (Figure 8.1) and related to: • Lower Murray flood irrigated (dairy farm) area discharges (eg Jervois, Woods Point, Monteith, Cowirra, Wall Flat, Neeta, Pompoota) for nutrient, organic matter and salinity stressors • leakage from large horticultural areas (eg Waikerie, Cadell, Pike, Qualco/Sunlands) for salinity, nutrient and organic matter stressors • large tributary river discharges (eg Marne, Angas, Bremer, Finniss, Pike) for nutrient, organic matter and heavy metal stressors (and salinity for Pike) • Mannum and Murray Bridge WWTP effluent ponds, and the Waikerie STEDS lagoons for nutrient and organic matter stressors. A large proportion of the total risks were of a moderate level (Figure 8.1), and generally related to: • urban stormwater discharges (eg from Mannum, Murray Bridge, Berri, Renmark, Waikerie, Tailem Bend, Goolwa townships) for the nutrient, organic matter, turbidity, hydrocarbons, and heavy metals stressors • septic tank leakage from dwellings/shacks, small townships, caravan parks and riverside public toilets for the nutrient and organic matter stressors • vessel discharges at mooring areas and marinas for nutrient and organic matter stressors • horticultural areas for leakage of heavy metal and pesticide stressors (and nutrients, organic matter and salinity stressors for smaller irrigation areas) • creek discharge for turbidity, nutrient, organic matter and heavy metal stressors • wetland discharges for the nutrient, salinity and organic matter stressors • some STEDS/wastewater lagoons (eg Renmark, Paringa) • slipways for turbidity, heavy metal and pesticide stressors. A large proportion of total risks were also of a low level (Figure 8.1) including: • petrol station leakage (hydrocarbons) • boat ramps (turbidity, hydrocarbons) • ferries (turbidity, hydrocarbons) • unbunded pump fuel stores (hydrocarbons) • informal camping areas (nutrients) • wastewater infrastructure (eg STEDS pumps at shack areas). 223
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E N V I R O N M E N T P R O T E C T
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The River Murray and Lower Lakes ca
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6 Mannum to Wellington LAP area ass
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Table 6.5 Frequency of risk to recr
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Figure 7.2 Example of hazard to wat
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Roz Becker, Riverland Tourism Assoc
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Abbreviations 10 ADWG Australian Dr
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Executive Summary The River Murray
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River Murray and Lower Lakes catchm
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2 Renmark to border LAP area assessment - EPA - Sa.gov.au

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