Pset_SpatialGeoObsBorehole Properties for geoscience observations in boreholes. IfcBorehole IfcBorehole BoreholeElevation If present, the property reports the elevation data in meters for the borehole (i.e., wellbore) start point. This is a compromise approach to allow for delivery of legacy 2D data without elevation data, and for software that cannot process a 3D GM_Point. BoreholeInclination The angle formed by a vertical line and the vertical component in the borehole direction is entered. BoreholeAzimuth If the drilling is inclined, the horizontal component in the borehole direction is entered based on the 360 degree orientation method moving right from true north. BoreholePurpose The purpose property reports the purpose for which the borehole was drilled. Operator The organisation or agency responsible for commissioning the borehole (as opposed to the agency which drilled the borehole). DrillingContractor The property DrillingContractor reports the organisation responsible for drilling the borehole (as opposed to commissioning the borehole). BoreholeLengthPlanned The planned length of a borehole e.g. in a site investigation program, in metres, as determined by the data provider. BoreholeLengthDrilled The length of a borehole as drilled and logged, in metres, as determined by the data provider. DrillingMethod Type of drilling method used.