Table 7 Pathways risk analysis for identified pathways into the Kimberley region (continued) Risk (pathway) Risk score (P x S) Risk rating Risk outcome Current mitigation strategies Escapes 3 2 6 Moderate Areas impacted are generally small and adjacent to the locations where the problematic species is being grown. A post border issue for the most part. Waste disposal 3 2 6 Moderate Areas impacted are generally small and adjacent to the locations where problematic species are dumped. A post border issue for the most part. Natural spread by animals, wind 2 2 4 Low Depending on the specific pathway, spread will be either cross border or from the coast moving inland. Most species that are commonly spread by this pathway in the Kimberley would already have made numerous incursions over the years. Management of natural seed dispersal from overseas or across the border is not possible, but good surveillance of the most obviously effected zones can keep this risk low. Water 2 2 4 Low Significant water dispersal would normally take place after cyclones or other large rainfall events as floods which would include cross border dispersal. Surveillance of flood plains is a somewhat simpler exercise in that the areas to be checked can be planned in advance prior to floods, with the extent of the flooding determining the areas to be searched. Nursery industry 1 3 3 Low Widespread dispersal into gardens, amenity and landscaping plantings allows dispersal of a large range of weedy species over potentially vast areas of the state. Well controlled via Permitted list, plant health import requirements and consignment checks by inspectors. Coarse grains and fodder trade (as seed) 1 3 3 Low The use of such produce in agricultural areas can mean dispersal directly into areas of the highest potential impact. Well controlled via a permitted list , plant health import requirements and consignment checks by inspectors including samples taken to determine level and identity of any contaminants P1 = probability of event occurring; S2 = severity of potential outcome (1 'Low' to 5 'Extreme')
A further breakdown of the livestock carrier pathway (Table 8) was considered important as livestock crossing the border is a complex series of pathways with each being treated differently depending on the intended destination. In all cases they essentially present the same level of risk when presenting at the border, with all animals containing seed internally. However, when mitigating the potential risks, the destination within the region also needs to be considered. Table 8 Various livestock pathways through the Kununurra checkpoint 2012–13 (QWAb 2013) Pathway Number Details of pathway Current quarantine action Cattle inspected at Quarantine Inspection Facility (QIF) 2 530 Moving from NT into WA with an inspection at the Kununurra QIF All livestock consignments are issued Inspector’s Direction Notice at the WA/NT road checkpoint for presentation and inspection at Kununurra QIF. Cattle inspected at destination property 5 588 Moving from NT into WA with an inspection at destination property All livestock consignments are issued Inspector’s Direction Notice at the WA/NT road checkpoint for presentation and inspection at property of destination. Cattle ‘moved within’ adjacent property 3,309 Moving from NT to WA side of the border to properties with the same owner All livestock consignments are issued Inspector’s Direction Notice at the WA/NT road checkpoint, no inspection undertaken. Live export cattle 3817 – Wyndham 1682 – Broome Moving from NT to WA through the checkpoint and directly to an export facility All livestock consignments are issued Inspector’s Direction Notice at the WA/NT road checkpoint for direct transport to an export facility. Truck exits via WA/NT checkpoint within 72 hours or approved