34To this, again on the basis of the Trust's interpretation, the Trust adds under s 106A3(b) or alternatively (a) or (c), a claim in respect of improvements. They comprise the amenities building located between Easement B and the Canal; the road located between Easements B and C and the Canal; and the childrens' playground, gazebo picnic facilities, road, paths, turf and shrubs bisected by Easement B. The claim in respect of improvements is pleaded in a complicated way, reflecting some modification of evidence by quantity surveyors, and on alternative bases depending on whether full replacement would be required or something minimal. At this point, it is sufficient to say that the pleaded claim in respect of improvements is for alternative amounts varying between $422,877 and $1,061,276. As noted earlier, there is also an agreed claim for disturbance of $6,000.
35In his joint report with Mr Lunney, Mr Dundas acknowledges the critical importance to assessment of compensation of the Trust's interpretation of the terms of the easement as follows, at [9] - [10]:
Mr Lunney has expressed the opinion in his Statement of Evidence, that no compensation is payable to the Reserve Trustee. Mr Dundas would be in general agreement with the conclusions reached by Mr Lunney if and only if, the Court was to make the finding that the easement terms did not permit the construction of any pipes or other infrastructure on or upon the surface of the land such that the infrastructure would render the land incapable or less suitable for its current use as public open space. In this situation Mr Dundas considers that there may be a small amount of compensation payable to the Reserve Trust, perhaps $100,000 or so, to reflect the fact that there now is a "blot on title" which is a disadvantage
Mr Lunney has some difficulty understanding how the market value of the Reserve Trustee's interest could be significantly diminished by reason of a "blot" on the title of the land. The "blot on title" affects the owner of the fee simple interest more so than the owner of the limited and weak trustee's interest.
36Mr Dundas' "blot on title" is not an appropriate description to employ under s 106A(3) since the Crown, not the Trust, is the owner of Tempe Reserve. However, putting aside that label, his evaluation is in point.
37Mr Lunney did not carry out a valuation based on the Trust's interpretation. Nor did he assess compensation under s 106A(3). On the basis of SW's interpretation of the terms of Easements B and C, Mr Lunney assessed compensation only under the Just Terms Act. That is because until the trial, when it abandoned the contention, SW contended that compensation should be assessed under the Just Terms Act, not under s 106A(3) of the Crown Lands Act. Mr Lunney concludes that the market value of the Trust's interest is identical in the before and after valuation scenarios. Accordingly, he opines that no compensation is payable to the Trust, other than for the agreed disturbance costs of $6,000. In reaching that conclusion, he accepts the evidence of Mr Roberts that any localised repair (whilst unlikely to be needed in the short to medium term) would not require restriction of the entire length of the easements but would be local to the location of a leak or known defect.
38Mr Dundas considers that the market rate for Tempe Reserve as a whole (Lots 7021 and 7022) is $390 per square metre. Mr Lunney accepts $375 per square metre.
39On the Trust's interpretation of Easements B and C, Mr Dundas assesses compensation for loss of public benefit under s 106A(3)(b) by analogy with compensation for the market value of the fee simple land. That is because he can find nothing that would otherwise give him any guidance as to assessing the value of the public benefit, it never having been done before. The only alternative he can think of is to assess the cost of buying equivalent land in the immediate area. If Mr Dundas' market value analogy is appropriate, then there is disagreement between the valuers as to what sales are comparable and what adjustments should be made to comparable sales and as to Mr Dundas' piecemeal approach to valuation. This is all irrelevant if the Trust's interpretation of Easements B and C is incorrect.
40Mr Dundas accepts, and I agree, that to date there has been no loss of public open space on Tempe Reserve and, therefore, no reduction to date in public benefit within the terms of s 106A(3)(b). However, as to the future he takes into account the rights acquired under the easements (on the Trust's interpretation) whenever they might be exercised.
41In my opinion, a registered easement is construed by reference to its registered terms and not by reference to extrinsic material, except (it seems) for the physical characteristics of the dominant and servient tenements at the time of creation of the easements (or to make sense of that which the Register identifies eg surveying terms and abbreviations): Westfield Management Ltd v Perpetual Trustee Co Ltd [2007] HCA 45, (2007) 233 CLR 528 at [5], [37] - [41]; Sertari Pty Ltd v Nirimba Developments Pty Ltd [2007] NSWCA 324 at [15] - [16]; Hare v Van Brugge [2013] NSWCA 74, (2013) 16 BPR 31,655 at [15] - [18] Queensland Premier Mines v French Pty Ltd [2007] HCA 53, (2007) 235 CLR 81 at [14]; Castle Constructions Pty Ltd v Sahab Holdings Pty Ltd [2013] HCA 11, (2013) 247 CLR 149 at [20].
42The construction inquiry as to the terms of an easement is as to what the dominant owner could possibly do in the exercise of its rights: Besmaw Pty Ltd v Sydney Water Corporation [2001] NSWLEC 15, (2001) 113 LGERA 246 at [22], [56] - [57], [65] - [67], [77] - [78]; upheld on appeal Sydney Water Corporation v Besmaw Pty Ltd [2002] NSWCA 147; cited without disapproval in Roads and Traffic Authority of New South Wales v Peak [2007] NSWCA 66 at [63] - [65]; applied in Chino Pty Ltd v Transport Infrastructure Development Corporation [2006] NSWLEC 768, (2006) 153 LGERA 136 at [74] - [85] and Vilro Pty Ltd v Roads and Traffic Authority (NSW) [2010] NSWLEC 234, (2010) 179 LGERA 47 at [208] - [211]. Besmaw bears some comparison with the present case. In Besmaw, SW compulsorily acquired an easement for sewage purposes and this Court determined the compensation. The evidence suggested that the pipeline had already been laid within the easement and that the pipeline had a life expectancy of 50 years without serious failure requiring maintenance: at [14]. Besmaw complained that SW's rights enabled it in the future to deny Besmaw physical access across the land affected by the easement. Besmaw therefore claimed compensation comprising disturbance costs under s 59(f) of the Just Terms Act for the cost to which it would be put in the event that the full entitlements acquired pursuant to the easement were ever exercised. SW unsuccessfully contended that it was unlikely to act in accordance with the rights asserted by Besmaw to have been acquired, other than in the most temporary of situations during maintenance etc; that the Court should conclude that the access difficulty anticipated by Besmaw would not eventuate; and therefore no compensation was payable for new access: at [20]. Sheahan J awarded compensation of over $1.5 million for access costs under s 59(f), holding at [56] - [57]:
The rights taken away from the landowner must be measured, not by what the acquiring authority at any given time might plan to do, or what its policies are, or what assurances or understandings may be given or communicated about the way its rights may be exercised, but by what its enabling instrument allows it to do.
Easements acquired compulsorily must be construed in the same manner as those which have been freely granted, and the courts will infer such ancillary rights as are reasonably necessary to the reasonable exercise and enjoyment of the rights expressly granted.
43SW's appeal to the Court of Appeal was dismissed: Sydney Water Corporation v Besmaw Pty Ltd [2002] NSWCA 147. Meagher JA (Hodgson and Ipp JJA agreeing) said at [5] and [7]:
However, what does upset Besmaw is that Sydney Water has the right to deny Besmaw access to Captain Cook Drive. If it exercised some of the powers contained in Memorandum 053501, it could undoubtedly do so. ...it ill behoves Sydney Water to keep repeating that the rights to block Besmaw's access which it refuses to disclaim are merely theoretical. In argument, ...senior counsel for Besmaw, pointed to the example of constructing and laying a new sewage line above ground along the length of the easement, as a possible peril for his client.
...
It follows, in my view, that the threat feared by Besmaw does exist; and that, although it may be remote, it is neither theoretical nor hypothetical.
44Accordingly, in my opinion, SW's evidence of the actions, intentions and expectations of SW (and successors) since or before the acquisition is irrelevant to the construction issue. Whether any of such evidence is relevant to whether the risk of a particular future exercise of a right is "remote" (referred to in Besmaw on appeal), and whether remoteness bears on the quantum of compensation under s 106A(3), are different issues. But even those different issues have to be considered in the context that SW has transferred the pipeline, and that the easements were acquired for the wider purpose of the Sydney Water Act, which may call up different requirements over time. Such evidence, which (if relevant) I accept, includes the following:
(a)Mr Marc Roberts, an engineer, says that the pipeline has been designed to minimise the potential need for maintenance such that, when it is damaged by a third party, it is not expected that pipeline repair will be required in the short to medium term, and localised repairs would not require restrictions to the entire length of the easements on Tempe Reserve.
(b)Ms Susan Trousdale, an SW officer, says that the Kurnell desalination plant's current capacity is 250 megalitres per day which is around 15 per cent of Sydney's water demand and the pipeline has been signed to take 500 megalitres per day. The purpose of this evidence is to show that there will never be a need to install more or larger pipes in Tempe Reserve. I observe, however, that it does not take account of the possible expansion of the Kurnell plant through the acquisition of land adjoining it, nor the possible establishment of another desalination plant or plants, nor that the subject easements were legally acquired not merely for the purpose of the existing desalination plant but for the wider purposes of the Sydney Water Act, in perpetuity.
(c)Mr Frank Kanak, an SW officer, says that the desalination pipeline has been constructed using superior technology, and is likely to require far less maintenance and less frequent maintenance and inspection than other pipelines; and that repairs or maintenance would not require construction of any permanent physical structures or above-ground barriers.
45The Memorandum contains the terms of Easements A, B, C and D. In interpreting the terms of the controversial Easements B and C, the different terms of Easements D and A provide context and cast light.
46The Memorandum includes definitions of "Land in Stratum", "Water Supply Works", "Works", "Works (Mounded)" and "Works (Trenched)". The Memorandum contains four schedules. The scheme of each schedule is that cl 1 provides for what SW may do, cl 2 provides for what SW must do, and cl 3 provides for what the registered proprietor must not do. Easement A is a "Land in Stratum", "Water Supply Works" easement and has the terms in Schedule 3. Easement B is a "Works (Trenched)" easement and has the terms in Schedule 4. Easement C is a "Works (Mounded)" easement and has the terms in Schedule 2. Easement D is a "Works" easement and has the terms in Schedule 1.
47Easement D is an above-ground easement in the north-eastern corner of Tempe Reserve. Schedule 1 of the Memorandum containing its terms is titled "Provisions of Easement for Water Supply Purposes (Aqueducts, Inverted Syphons and other aboveground structures)" (emphasis added). Clause 1 of Schedule 1 provides that SW may construct, operate or carry out any "Works". Significantly, "Works" are defined to mean works "situated upon, above or below the surface of the Land" (emphasis added).
48In contrast:
(a)Under Easement B, Schedule 4 permits "Works (Trenched)", which are defined to mean "infrastructure works used for water supply purposes situated at, upon, on or below but not above the surface of the Land" (emphasis added).
(b)Under Easement C, Schedule 2 permits "Works (Mounded)", which are defined to mean "the water supply pipeline used for water supply purposes situated within the mound which together are at, upon, above or below the surface of the Land, provided however the water supply pipeline is not above the surface of the mound" (emphasis added). Hence, "Works (Mounded)" include both the pipeline and the mound in which the pipeline is located, and the mound itself is the only aspect of such works that is "above" ground or visible. The pipeline itself may not protrude above the surface of the mound.
49Thus, Easement D expressly permits SW to do works above the surface, whereas Easements B and C expressly prohibit SW from doing works above the surface.
50"The mound" referred to in the definition of "Works (Mounded)" in Easement C is undefined. There was some argument as to whether it means the specific identifiable mound that existed at the date of acquisition, or a mound that SW (or successors) may change. For present purposes, the issue is of no real significance. If it has to be decided, then I would decide that it is the former because that is what the use of the definite article in the reference to "the mound" in the definition indicates. There is a reference in Schedule 2 cl 3.1.4 to the surface level of "the Land as it exists from time to time" which arguably suggests the latter, but in my view it is preferable to construe those words as referable to natural processes such as erosion. Clause 3 of Schedule 2 specifies what the registered proprietor must not do and is an unlikely source of SW's rights, which are specified in cl 1.
51The Trust's construction of Easements B and C is essentially based upon the words "upon" or "on" in the definition of "Works (Trenched)" and the word "upon" in the definition of "Works (Mounded)". The Trust argues that if nothing is permitted to project above the surface, the definitions could have simply referred to works "at but not above" the surface, but the addition of the words "on" or "upon" suggest otherwise. I disagree. In context, the addition of those words are indicative of no more than the familiar technique of draftspersons to try and cover the field by stringing together a number of words which, if they are not synonyms, have fine shades of meaning that are of no consequence for many purposes. In my opinion, in context, the words "at", "on" or "upon" are substantially interchangeable and are reinforced by the words "but not above" to indicate that there is to be no substantial projection above the surface.
52The Trust submits that SW's right to place infrastructure works "on" or "upon" the land but "not above the surface" means that, for example, a large pipe could be placed "on" or "upon" the land and that the prohibition "not above the surface" would not apply because that prohibition is limited (in the example) to a pipe suspended above the land by supports in the ground. The Trust points to the example of the pipe on the next door Council land which is suspended above the ground by supports in the ground. I can see nothing to support the Trust's interpretation. If it had been intended, the word "above" could have been altered in the definitions to "suspended above". The practicality of the interpretation that only works that do not protrude substantially above the surface can be constructed is illustrated by the existing concrete slabs over test and access points, which demonstrate the utility of having works at, on or upon but not above the surface to ensure that (among other things) maintenance can be carried out.
53My interpretation is supported by the similar provisions of cl 3 of Schedule 4 relating to Easement B and cl 3 of Schedule 2 relating to Easement C. They permit the registered proprietor to use the land "for pedestrian and vehicular access" and to construct and maintain "roads and footpaths" over the land. Such rights are inconsistent with the Trust's construction that SW is entitled to place, for example, a large pipe "upon" the land, for this would negate the registered proprietor's rights to pedestrian and vehicular access and to construct and maintain roads and footpaths. The Trust's answer to this is to submit that those cl 3 rights of the registered proprietor are subordinate to SW's cl 1 right to place a large pipe "upon" the land. I am unable to accept the submission. The provisions of the Memorandum are harmonised by construing, as I have suggested, the references to "above" surface works in the definitions as meaning any works that in fact are above the surface, not limited to works suspended above the surface.
54Consistently with my interpretation, in fact at the date of acquisition the pipeline in Easement D had been constructed above the surface of the land behind a retaining wall (and then backfilled), unlike the pipeline in Easements A and B, which had been constructed below the surface of the land, and the pipeline in Easement C, which had been constructed below the surface of the mound. It is unnecessary to decide, but arguably this can be invoked as an aid to interpretation of the terms of the Easement D as a physical characteristic of the tenements at the date of acquisition: see [41] above.