Table 55: Potential impacts and OUV that may have an impact on the value of the environment at each of the five port anchorage areas Gladstone Gladstone Impact OUV Cairns Townsville Abbot Point Hay Point Inner Outer Disturbance to seabed Open soft Open soft Open soft Open soft Rocky reefal Open soft and supported sediment habitat, sediment sediment sediment habitat, sediment biodiversity: low diversity habitat, low habitat, low habitat, low moderate habitat, low diversity diversity diversity diversity diversity Directly affect seabed Low potential for 2, 3, 4 topography and impact Low potential Low potential Low potential Moderate Low potential biodiversity from for impact for impact for impact potential for for impact anchor drop and chain impact drag Release of emissions Low frequency of Low Low High Moderate Moderate or pollutants/wastes: anchorage use frequency of frequency of frequency of frequency of frequency of anchorage anchorage anchorage anchorage use anchorage use Directly or indirectly Low potential for use use use affect water, air and impact Moderate Moderate sediment quality from Low potential Low potential High potential potential for potential for 2, 3 release of emissions, for impact for impact for impact impact impact pollution or wastes either from the vessel itself associated with running the vessel at anchor Altered aesthetic Anchorage within Anchorage Anchorage Anchorage Anchorage Anchorage value: 2 km of Yarrabah within 2 km of <10 km from within 2 km of approximately 3 Aboriginal Magnetic 30 km from Sarina Gladstone 20 km from Alter the vista of the
Table 55: Potential impacts and OUV that may have an impact on the value of the environment at each of the five port anchorage areas Impact OUV Cairns Townsville Abbot Point Hay Point Gladstone Inner Gladstone Outer Disturbance to seabed and supported biodiversity: Directly affect seabed topography and biodiversity from anchor drop and chain drag 2, 3, 4 Open soft sediment habitat, low diversity Low potential for impact Open soft sediment habitat, low diversity Low potential for impact Open soft sediment habitat, low diversity Low potential for impact Open soft sediment habitat, low diversity Low potential for impact Rocky reefal habitat, moderate diversity Moderate potential for impact Open soft sediment habitat, low diversity Low potential for impact Release of emissions or pollutants/wastes: Directly or indirectly affect water, air and sediment quality from release of emissions, pollution or wastes either from the vessel itself associated with running the vessel at anchor 2, 3 Low frequency of anchorage use Low potential for impact Low frequency of anchorage use Low potential for impact Low frequency of anchorage use Low potential for impact High frequency of anchorage use High potential for impact Moderate frequency of anchorage use Moderate potential for impact Moderate frequency of anchorage use Moderate potential for impact Altered aesthetic value: Alter the vista of the 3 Anchorage within 2 km of Yarrabah Aboriginal Anchorage within 2 km of Magnetic Anchorage 30 km from Anchorage <10 km from Sarina Anchorage within 2 km of Gladstone Anchorage approximately 20 km from
gbr-anchorage-management-appendixa.docx