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    SSM     CANNINGVALE 21A
    Alternate names : Map ref.: CANNINGVALE BG34 4.2
    APREF/NGCA codes: Database number : 105765
    Stamp name:      CVAL21A Date established :   01/11/1979
    Physical status : destroyed (Landgate)Phys. status date :  03/10/2008
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 07 30.63327Easting (m) :   396710.707
    Longitude :  E 115 54 18.04956Northing (m) :  6445164.475
    Convergence :       -0 34 56.40
    Point scale factor : 0.99973157
    Coordinate date :       13/09/2018
    Horizontal method :   GNSS Survey NetworkCadastral connection : Exists
    Relative horiz. accuracy :       30ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.021 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.021
    Semi-minor axis (m) : 0.020
    Azimuth of semi-major axis (deg) : 119 48 59
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58336.827
    Northing (m) :  344266.996
    Convergence :       0 2 49.13
    Point scale factor : 0.99999992
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         28.931Height date :          04/05/2000
    Established by :  unknownState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA2020 ellipsoidal height (m) : -3.014N-Value (m) :          -31.945
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         -3.056Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.036m
    Mark to hatch cover :  0.201
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM4 Phys. status : destroyed (Dept of Land Admin.) Date :   26/02/2004
    Phys. type :    spikeSet in : bitumen
    Azimuth :           315 11 7Type :   True azimuth
    Distance (m) :    12.440Type :   Horizontal
    Height diff. (m) : 0.538Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM5 Phys. status : destroyed (Landgate) Date :   03/10/2008
    Phys. type :    spikeSet in : concrete
    Azimuth :           44 53 48Type :   True azimuth
    Distance (m) :    6.875Type :   Horizontal
    Height diff. (m) : -0.361Type :   Spirit Levelling
    RM to GL (m) :   None
    RM6 Phys. status : destroyed (Landgate) Date :   03/10/2008
    Phys. type :    spikeSet in : concrete
    Azimuth :           225 30 9Type :   True azimuth
    Distance (m) :    7.152Type :   Horizontal
    Height diff. (m) : -0.017Type :   Spirit Levelling
    RM to GL (m) :   None
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM4
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 07 30.34677Easting (m) :   396701.852
    Longitude :  E 115 54 17.71506Northing (m) :  6445173.207
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58328.066
    Northing (m) :  344275.828
    Height Information
    Vertical datum :   AHD71
    Height (m) :         29.469
    RM5
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 07 30.47516Easting (m) :   396715.508
    Longitude :  E 115 54 18.23469Northing (m) :  6445169.392
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58341.684
    Northing (m) :  344271.862
    Height Information
    Vertical datum :   AHD71
    Height (m) :         28.570
    RM6
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 32 07 30.79601Easting (m) :   396705.658
    Longitude :  E 115 54 17.85494Northing (m) :  6445159.412
    Project Grid - PCG2020Perth Coastal Grid 2020
    Easting (m) :   58331.721
    Northing (m) :  344261.987
    Height Information
    Vertical datum :   AHD71
    Height (m) :         28.914
    Cadastral Connection Fieldbooks
    DLI 97884
    DOLA 91120
    S.A.GILLIGAN 6
    Special Notes
    No Special Notes for this mark
    ATRF 2014
    GDA2020 coordinates are equivalent to ATRF2014@2020.0. ATRF2014 coordinates can be determined by application of the Australian Plate Motion Model. For general and technical information on GDA2020 see http://www.icsm.gov.au/gda2020 and ATRF2014 see http://www.icsm.gov.au/australian-terrestrial-reference-frame.
    View the graphic summary
    SSM     CANNINGVALE 21A
    Alternate names : Map ref.: CANNINGVALE BG34 4.2
    APREF/NGCA codes: Database number : 105765
    Stamp name:      CVAL21A Date established :   01/11/1979
    Physical status : destroyed (Landgate)Phys. status date :  03/10/2008
    Physical type :    brass plaqueHatch cover type : concrete
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 07 30.68122Easting (m) :   396709.695
    Longitude :  E 115 54 18.01039Northing (m) :  6445162.988
    Convergence :       -0 34 56.42
    Point scale factor : 0.99973157
    Coordinate date :       09/10/2000
    Horizontal method :   Geodetic-TerrestrialCadastral connection : Exists
    Relative horiz. accuracy :       20ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.024 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.026
    Semi-minor axis (m) : 0.021
    Azimuth of semi-major axis (deg) : 128 0 0
    ** Projection coordinates are calculated from the geographical coordinates detailed above
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58335.799
    Northing (m) :  244265.520
    Convergence :       0 2 49.11
    Point scale factor : 0.99999992
    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         28.931Height date :          04/05/2000
    Established by :  unknownState :                    Final
    Vertical method : Spirit LevellingVertical accuracy : 12rootK
    Derived GDA94 ellipsoidal height (m) : -2.921N-Value (m) :          -31.852
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic
    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         -3.056Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.036m
    Mark to hatch cover :  0.201
    Mark to ground level : 
    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM4 Phys. status : destroyed (Dept of Land Admin.) Date :   26/02/2004
    Phys. type :    spikeSet in : bitumen
    Azimuth :           315 11 7Type :   True azimuth
    Distance (m) :    12.440Type :   Horizontal
    Height diff. (m) : 0.538Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM5 Phys. status : destroyed (Landgate) Date :   03/10/2008
    Phys. type :    spikeSet in : concrete
    Azimuth :           44 53 48Type :   True azimuth
    Distance (m) :    6.875Type :   Horizontal
    Height diff. (m) : -0.361Type :   Spirit Levelling
    RM to GL (m) :   None
    RM6 Phys. status : destroyed (Landgate) Date :   03/10/2008
    Phys. type :    spikeSet in : concrete
    Azimuth :           225 30 9Type :   True azimuth
    Distance (m) :    7.152Type :   Horizontal
    Height diff. (m) : -0.017Type :   Spirit Levelling
    RM to GL (m) :   None
    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM4
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 07 30.39472Easting (m) :   396700.841
    Longitude :  E 115 54 17.67589Northing (m) :  6445171.721
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58327.038
    Northing (m) :  244274.352
    Height Information
    Vertical datum :   AHD71
    Height (m) :         29.469
    RM5
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 07 30.52311Easting (m) :   396714.497
    Longitude :  E 115 54 18.19551Northing (m) :  6445167.906
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58340.656
    Northing (m) :  244270.386
    Height Information
    Vertical datum :   AHD71
    Height (m) :         28.570
    RM6
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 32 07 30.84396Easting (m) :   396704.647
    Longitude :  E 115 54 17.81577Northing (m) :  6445157.925
    Project Grid - PCG94Perth Coastal Grid 1994
    Easting (m) :   58330.694
    Northing (m) :  244260.511
    Height Information
    Vertical datum :   AHD71
    Height (m) :         28.914
    Cadastral Connection Fieldbooks
    DLI 97884
    DOLA 91120
    S.A.GILLIGAN 6
    Special Notes
    No Special Notes for this mark