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Desktop Environmental, Hydrological and Geotechnical Study

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Table 15 Qualitative risk assessment, PSP Area 25<br />

Source Activity Contaminant Critical Receptor Pathway<br />

Small-scale<br />

agriculture<br />

Small-scale<br />

agriculture<br />

Small-scale<br />

agriculture<br />

Small-scale<br />

agriculture<br />

Small-scale<br />

agriculture<br />

Animal husb<strong>and</strong>ry<br />

Heavy metals,<br />

pesticides, herbicides,<br />

fertilisers<br />

Heavy metals,<br />

pesticides, herbicides,<br />

fertilisers<br />

Heavy metals,<br />

pesticides, herbicides,<br />

fertilisers<br />

Heavy metals,<br />

pesticides, herbicides,<br />

fertilisers<br />

Heavy metals,<br />

pesticides, herbicides,<br />

fertilisers<br />

Nutrients, hormones,<br />

antibiotics<br />

Human (Adjacent<br />

Site Users)<br />

Groundwater<br />

Surface water<br />

Flora <strong>and</strong> Fauna<br />

Services/<br />

Infrastructure<br />

Human (Current<br />

Site Users)<br />

Dermal Contact,<br />

Ingestion,<br />

Inhalation<br />

Permeation<br />

through Soil<br />

Profile<br />

Perched<br />

Groundwater<br />

Flow, Surface<br />

run-off<br />

Leaching <strong>and</strong><br />

uptake<br />

Permeation<br />

through Soil<br />

Profile<br />

Dermal Contact,<br />

Ingestion,<br />

Inhalation<br />

Potential<br />

Effects<br />

Toxic,<br />

Carcinogenic,<br />

Hazardous to<br />

Human Health<br />

Groundwater<br />

Contamination<br />

Surface Water<br />

Contamination<br />

Toxic,<br />

phytotoxic<br />

Physical <strong>and</strong><br />

chemical<br />

damage to<br />

structures<br />

Potentially<br />

hazardous to<br />

human health<br />

Potential<br />

Consequence of<br />

Contaminant-<br />

Receptor Linkage<br />

Project 230243-001-01 | File 20120912 PSP25 <strong>Desktop</strong> 230243.docx | 13 September 2012 | Revision 2<br />

p 34<br />

Likelihood<br />

of Source-<br />

Receptor<br />

Linkage<br />

Risk<br />

Classification<br />

Severe Unlikely Low<br />

Severe Unlikely Low<br />

Severe Unlikely Low<br />

Severe Unlikely Low<br />

Mild Very unlikely Negligible<br />

Moderate Possible Moderate<br />

Comments<br />

Based on<br />

quantities of<br />

contaminants<br />

likely used

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