The evidence
7 The basic facts are not in dispute. Mr A P Hart, registered surveyor, carried out some survey work on the land prior to the making of the development application in September 1988. That survey comprised the following:
a) a survey to allow the production of a contour and detail plan of the land, sufficient to allow volume calculation for earthworks design;
b) a long section was performed to confirm the earthworks calculation;
c) survey traverses along the perimeter and across the site were performed to provide survey control to the site;
d) the property boundaries were redefined and a plan of redefinition prepared; and
e) the boundary corners in the plan of redefinition were pegged.
8 Mr Hart had available to him the architect's conceptual design for the project before he commenced his survey work.
9 Following the grant of development consent, Mr Hart was asked by the developer, Mr P Muller, in early January 1989 to "peg the site ready to control the earthworks". Condition 10 of the development consent required accurate heights and positional set-out so as to control the depth of the proposed lake and the balance between cut and fill earthworks, together with accurate positioning of all construction elements of the development. According to Mr Hart, each of the previously marked survey stations was required to be found and re-measured. These stations were to be used to control the set-out of the development during the construction period.
10 Mr Hart then returned to the site and carried out the survey over several days in January 1989. That work, as I understand the evidence, involved the following:
a) the survey traverses performed prior to the lodgement of the development application were repeated and this involved clearing each line of sight;
b) although no new survey stations were placed, it was necessary to reinstate a lot of pegs and stakes and nailing pegs (for fixing levels) because many of these markers had been removed, presumably by trespassers.
11 According to Mr Hart, whose expert evidence I have no reason to doubt, he considered it was necessary to conduct the traverses so as to comply with condition 10 of the development consent which fixed a maximum depth of the lake at RL 3.00.
12 Mr Hart again returned to the site on 4 and 5 February 1989 and carried out a consolidation survey as required by condition 29 of the development consent. This involved a full field survey to measure and mark the external boundaries of the land and complete a linen plan of survey for registration. All the boundary corners in the plan of consolidation were pegged or physically marked appropriately. Line pegs were also placed. The northeast corner of the land was the only new corner to be marked - the other corners had been previously marked but required marking again as the pegs had been removed. A linen plan of survey was prepared but it has not been registered.
13 In carrying out his work on the site in January and February 1989, after the grant of development consent, Mr Hart and his survey team encountered problems with the constant removal by others of stakes and boundary pegs that had been placed during the surveys for the preparation of the development application. This necessitated repeating the survey traverses, replacing missing markers and re-pegging boundary corners.
14 According to Mr R D Hanby, the council's senior development engineer, the only purpose for undertaking the survey work in January 1989 was to re-establish and re-instate the physical markers that had been placed prior to the lodgement of the development application so as to enable work to be done on the site.
15 According to Mr C J Lutton, the council's surveyor, the only additional work required to be done after the consent for the production of the plan of consolidation and the linen plan was the placing of the peg at the north-eastern corner, which was not part of the earlier survey in 1988.