The evidence from Philip James Breene, civil engineer called by the respondent, is that whilst the rock may have some use in the embankment supporting the northbound carriageway; and his opinion on this was more one of speculation than of putting forward a considered view; that part of the rock spill which spread onto the resumed land had, in his view, no discernible purpose to serve. I should mention that no part of the road embankment, if I can use that term generally, extended onto the resumed land in the area of the rock spill. It was suggested by the claimant that the rock may have been associated with a proposed exit lane intended to provide access onto the Marshall land and Mr Breene agreed that the location of the rock spill was at least in part consistent with the provision of such a lane. At some stage, however, the then Department of Main Roads changed its view about how access should be provided into the claimant's land, so even if the rock spill was placed in anticipation of the original access proposal being pursued, I cannot see how a discontinuance of that plan makes the rock spill part of the road structure. It is clearly the case that the rock spill in no way causes the flooding on Mr Marshall's land, so in that sense alone it cannot be the basis of a claim for injurious affection. To the extent that part of the rock spill may have been part of the embankment supporting the northbound carriageway, I need to consider whether the presence of part of that rock spill on the resumed land means that a practical separation cannot be made between the rock spill found on the resumed land and that which is an integral part of the embankment structure. Mr Baker inspected the rock spill and said that he could see no reason for it being in place. Mr Baker is, of course, a surveyor and it would be the evidence of an engineer that I would prefer and it is therefore Mr Breene's evidence which is of greater interest to me on this point. There was no evidence from the claimant's side to say that the rock is part of the structure, it simply being a possibility in the view of Mr Breene who was called by the respondent. Whilst it is clear that for a claimant to bring himself within a head of claim there is a legal onus to adduce cogent evidence in support of such a claim, it matters not that the source of that evidence is the respondent's side. Having said this, however, I note that Mr Breene's evidence is that whilst the inclusion of that rock in the road structure has some possible engineering merit that the remainder of the rock spill located on the resumed land has no arguable or apparent purpose. I cannot hold that the rock spill on the resumed land is therefore part of the works which cause the flooding. Let me demonstrate my reasoning by analogy. If it were the case that the nuisance complained of was noise emanating from the road surface and for the sake of my example assume that gravel from the road surface has been left either tidily or untidily located on the resumed land. In such a factual scenario a dispossessed owner would not be able to claim injurious affection resulting from noise on the carriageway which is not on the resumed land, on the basis of the presence of gravel on the resumed land. Indeed, even if it were the case that the road surface was gravel and the gravelling extended down the supporting embankment and through the drainage area, a claim of injurious affection due to noise could not be maintained." (emphasis added)