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 Animal husbandry (piggeries, feedlots) Risk level: low–moderate Possible options: capital works, research Suggested lead stakeholders: EPA, facility owners/operators Animal husbandry activities were identified as a potential risk to water quality. However, most were EPA licensed and existing management controls were in place. Uncertainties in the risk assessment: Individual sites were not inspected leaving some uncertainty as to the risk level. Licence coordinators provided information in some cases. Ferry operations Typical risk level: low Possible options: capital works, policy/planning, compliance, capacity building Suggested lead stakeholders: DTEI, EPA, SAMDB NRMB Ferry operations on the river were identified as a low risk to water quality. DTEI is currently monitoring deck runoff and consulting with the EPA on the outcomes of this research. New ferries will be constructed with pollutant retainment/treatment systems incorporated on-board. Sweeping and collection of material from ferry decks is the current preferred method for cleaning although some ferry decks are still washed down. Management option 32 DTEI to continue the implementation of ferry pollutant management systems on new ferries. Standard operating and training procedures for existing ferries and their personnel need reviewing, including the use of hydrocarbon spill kits and cleaning procedures following transport of stock. Landfills 244 Status of implementation: Underway Risk level: low–moderate Possible options: capital works, research Suggested lead stakeholders: EPA, councils/landfill operators There were no currently operating landfills identified on the floodplain of the river although some closed landfills (eg Narrung, Sturt reserve) in these locations may be leaking contaminants. Uncertainties in the risk assessment: Potential pollutant leakage from closed landfills was uncertain.
Dredging River Murray and Lower Lakes catchment risk assessment for water quality: Results and management options Risk level: low–moderate Possible options: capital works, capacity building, monitoring Suggested lead stakeholders: local councils, SAMDB NRMB, EPA, boating industry Habitat destruction and suspended sediment impacts may result from dredging activities. Dredging generally came out as a low-moderate risk to river water quality on the basis of reasonably infrequent occurrence, the turbid nature of the river, and the fact it is regulated by the EPA (Schedule 1 of the Environment Protection Act 1993). Most dredging operations on the river are removing willows, or clearing irrigation channels, vessel moorings and marinas. As dredging locations change constantly, the sites identified in this risk assessment should not be considered as the only areas of regular activities. Dredging impacts vary depending on the extent of sediment disturbance and sensitivity of the environment being dredged. The use of sediment curtains and other pollution prevention measures are often imposed as licence conditions in an attempt to minimise environmental harm. Under the current Schedule 1 definition, dredging is licensable for the following applications (unless they involve the establishment of a visual aid to navigation or any lawful fishing or recreational activity): the dredging/cleaning of inlet channels and sluices to irrigation areas, marina applications, slipway and boat ramp applications, and riparian edge management (eg willow removal). The exclusions to the definition limit the EPA’s ability to ensure compliance with the Act and provide a consistent approach to managing dredging. There is also currently no threshold below which a licence is not required (eg disturbing any bottom sediment is considered dredging) and dredging contractors also have concerns with the large amount of administration required to obtain licences. Management option 33 Education of dredging operators on best management practices would be beneficial. The EPA is to investigate options to minimise administration burden and consider a review of Schedule 1 of the Environment Protection Act to ensure consistent and appropriate regulation of Schedule 1 activities. Reasonable and practicable measures to reduce environmental impacts should be made mandatory for all dredging operations. Status of implementation: In planning Uncertainties in the risk assessment: Dredging impacts have not been studied in detail on the river and lakes so the risk assessment had some uncertainty. Vessel launching/boat ramps Risk level: low Possible options: policy planning, capacity building Suggested lead stakeholders: local councils, DTEI, DWLBC, boating industry Although vessel launching areas/boat ramps were rated as a low individual risk, the possible cumulative impact of boat ramps (and other structures) is of concern despite no detailed environmental impact assessment having been undertaken on this issue. 245
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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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Current and potential future option
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2 Renmark to border LAP area assessment - EPA - Sa.gov.au

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