DIMAP phone Level 1/ 150 Vulcan Rd Canning Vale, Western Australia 6155 map Gem Geophysical Surveys Pty Ltd phone 13 Houghton St Canning Vale, Western Australia 6155 map if (!IN_DEV) { ?> } ?> Savage Surveying phone 2 5 Hughes St Canning Vale, Western Australia 6155 map