Brecon 3D is a survey carried out by BTW Surveyors Ltd on behalf of Austral Pacific Energy Ltd within PEP38738. Field operations commenced on 9 February 2006, and primary operations were completed on 30 April 2006. Between this date and 22 May 2006 further work was carried out as required by Austral Pacific. This included resurveying pegs shifted by the drilling & recording companies, landowner requested shifts, locating shot pegs in Stratford Township for Western Geco & establishing infill shots. In carrying out the contractual duties BTW Surveyors Ltd pegged 5033 source points and 5044 receiver points, excluding any pegs resurveyed.