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      Mark Details (GOLA last updated on 07-May-2026)
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    SSM     KIRKALOCKA 255
    Alternate names : Map ref.: KIRKALOCKA SH50-3
    APREF/NGCA codes: Database number : 13150509
    Stamp name:      KIRK 255 Date established :   05/01/2005
    Physical status : established (John Bullock & Assoc.)Phys. status date :  05/01/2005
    Physical type :    brass plaqueHatch cover type : none
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA2020 Coordinates
    Horizontal datum : GDA2020Zone :             50
    Latitude :     S 28 07 32.04977Easting (m) :   598758.524
    Longitude :  E 118 00 20.06500Northing (m) :  6888478.976
    Convergence :       0 28 26.66
    Point scale factor : 0.99972038
    Coordinate date :       14/08/2018
    Horizontal method :   GNSS Survey NetworkCadastral connection : No
    Relative horiz. accuracy :       5ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.019 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.019
    Semi-minor axis (m) : 0.018
    Azimuth of semi-major axis (deg) : 160 35 34

    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         428.28Height date :          08/08/2007
    Established by :  John Bullock & Assoc.State :                    Final
    Vertical method : Global Position System + AusGeoid98Vertical accuracy : 0.05m
    Derived GDA2020 ellipsoidal height (m) : 409.204N-Value (m) :          -19.076
    Geoid model :         AusGeoid2020
    ** Derived GDA2020 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic

    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         409.267Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.034m

    Mark to hatch cover :  
    Mark to ground level : 

    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           120 0 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    3.075Type :   Horizontal
    Height diff. (m) : -0.144Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM2 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           222 43 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    7.500Type :   Horizontal
    Height diff. (m) : -0.108Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM3 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           294 26 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    5.066Type :   Horizontal
    Height diff. (m) : -0.064Type :   Spirit Levelling
    RM to GL (m) :   0.000

    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical Coordinates:No current GDA2020 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    RM2
    Geographical Coordinates:No current GDA2020 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    RM3
    Geographical Coordinates:No current GDA2020 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    Cadastral Connection Fieldbooks
    No Fieldbooks for this mark

    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     KIRKALOCKA 255
    Alternate names : Map ref.: KIRKALOCKA SH50-3
    APREF/NGCA codes: Database number : 13150509
    Stamp name:      KIRK 255 Date established :   05/01/2005
    Physical status : established (John Bullock & Assoc.)Phys. status date :  05/01/2005
    Physical type :    brass plaqueHatch cover type : none
    Mark set in :        concreteAccess type : 2 wheel drive
    Geographical CoordinatesMGA94 Coordinates
    Horizontal datum : GDA94Zone :             50
    Latitude :     S 28 07 32.09842Easting (m) :   598757.488
    Longitude :  E 118 00 20.02749Northing (m) :  6888477.487
    Convergence :       0 28 26.64
    Point scale factor : 0.99972037
    Coordinate date :       08/08/2007
    Horizontal method :   Global Position SystemCadastral connection : No
    Relative horiz. accuracy :       5ppm ** Estimated relative uncertainty to adjacent marks
    Positional uncertainty (m) : 0.012 (95% Confidence level)
    Error Ellipse
    Semi-major axis (m) : 0.013
    Semi-minor axis (m) : 0.011
    Azimuth of semi-major axis (deg) : 169 0 0

    Height Information
    Vertical datum :   AHD71Height type :          Orthometric
    Height (m) :         428.28Height date :          08/08/2007
    Established by :  John Bullock & Assoc.State :                    Final
    Vertical method : Global Position System + AusGeoid98Vertical accuracy : 0.05m
    Derived GDA94 ellipsoidal height (m) : 409.322N-Value (m) :          -18.958
    Geoid model :         AUSGeoid09 V1.01
    ** Derived GDA94 ellipsoidal height: h = H + N Interpolation :         Bi-Cubic

    Vertical datum :   GDA2020Height type :          Ellipsoidal
    Height (m) :         409.267Height date :          15/08/2018
    Established by :  Geoscience AustraliaState :                    Final
    Vertical method : GNSS Survey NetworkVertical accuracy : 0.034m

    Mark to hatch cover :  
    Mark to ground level : 

    RM Info** Warning: RM azimuths and coordinates are unverified
    ** Azimuth, distance and height difference are relative to main mark
    RM1 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           120 0 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    3.075Type :   Horizontal
    Height diff. (m) : -0.144Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM2 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           222 43 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    7.500Type :   Horizontal
    Height diff. (m) : -0.108Type :   Spirit Levelling
    RM to GL (m) :   0.000
    RM3 Phys. status : established (John Bullock & Assoc.)Date :   05/01/2005
    Phys. type :    Set in :
    Azimuth :           294 26 0Type :   Estimated Azimuth (unreliable)
    Distance (m) :    5.066Type :   Horizontal
    Height diff. (m) : -0.064Type :   Spirit Levelling
    RM to GL (m) :   0.000

    RM Position Information** Warning: RM coordinates should be verified prior to use
    ** Coordinates are calculated from reference observations
    ** Coordinate accuracies commensurate with related observations
    RM1
    Geographical Coordinates:No current GDA94 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    RM2
    Geographical Coordinates:No current GDA94 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    RM3
    Geographical Coordinates:No current GDA94 coordinates exist
    Height Information
    Vertical datum :   
    Height (m) :         No height available

    Cadastral Connection Fieldbooks
    No Fieldbooks for this mark

    Special Notes
    No Special Notes for this mark