Adam Clerke Surveyors Pty Ltd phone 38 Kevin Ave Avalon, New South Wales 2107 map Alan A Low phone 21 Joseph St Avalon, New South Wales 2107 map if (!IN_DEV) { ?> } ?> Dp Surveying Services phone 46 John St Avalon, New South Wales 2107 map Marine Surveys Pty Ltd phone 480 Barrenjoey Rd Avalon, New South Wales 2107 map if (!IN_DEV) { ?> } ?>