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

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

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River Murray and Lower Lakes catchment risk <strong>assessment</strong> for water quality: Results and management options<br />

Table 3.1 Frequency of risks <strong>to</strong> aquatic ecosystem health, BB & LB <strong>LAP</strong> <strong>area</strong>s<br />

Stressor<br />

Risk NU TU OR HM PE HY SA Total risks<br />

Low 52 37 51 1 41 39 12 233<br />

Moderate 60 13 61 9 1 8 22 174<br />

High 5 0 0 0 0 0 7 12<br />

Very high 0 0 0 0 0 0 0 0<br />

Total 117 50 112 10 42 47 41 419<br />

NU—nutrients; TU—turbidity; OR—organic matter; HM—heavy metals; PE—pesticides; HY—hydrocarbons; SA—salinity<br />

The aquatic ecosystem risks identified in the BB & LB <strong>LAP</strong> <strong>area</strong> are summarised in Table 3.2 and<br />

discussed in more detail below for each stressor.<br />

Figure 3.4 Example of hazard in the BB & LB <strong>LAP</strong> <strong>area</strong>s: river vessel waste disposal station<br />

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