Is there CPW on the site, and if so where is it?
26There is no disagreement between the parties that, on the basis of location, topography and soils, the pre-European vegetation of the site was most likely to have been CPW.
27There is a long history of agricultural use of the site which continued until 1951. A series of aerial photographs of the site dating back to 1943 was reproduced in Clements' report. These show the conversion of what was, in 1943, a predominantly agricultural landscape into one where large areas have been developed for residential, industrial and commercial purposes. However, throughout this period the site remained undeveloped except for the installation of the electricity pylons.
28The aerial photographs clearly show that while the majority of the site was open grassland there were a number of trees particularly in the northern part of the site which can be identified in all the photographs through to the present day.
29It is the part of the site where these trees occur which has been the focus of attention. It was agreed that the southern part of the site is dominated by introduced pasture grasses and is not CPW, notwithstanding the occurrence in the pasture of groundcover species that are characteristic of CPW and the presence of a few trees.
30The trees in this northern area of the site comprise a number of species of Eucalyptus with, as subcanopy trees, Acacia decurrens and Melaleuca decora. The shrub Bursaria spinosa, a characteristic shrub layer species within CPW, is present in this area.
31The Clements' study of the site included the recording of floristic data from 8 x 0.04 ha quadrats (5 x 20×20 m and 3 x 10×40 m), two 10 x 50 m transects and 9 x 10 m radius spot locations. Additional data were collected offsite adjacent to Long Street and Prospect Creek.
32The thoroughness and accuracy of the floristic recording was not challenged, indeed it was praised. Dr Wotherspoon in his report identified additional species, including a number characteristic of CPW, but this is not unexpected particularly as his recording was undertaken at a different season.
33Dr Clements undertook a comparison between the data for her quadrats individually and the Final Determination of the Scientific Committee for the listing of CPW as a Critically Endangered Ecological Community (particularly in relation to paragraph 6 of the Determination). On this basis she determined that the sampled patches represented by quadrats 2,4 and 6 met the criteria for identification as CPW, with a total area of CPW of about 0.21 ha.
34Dr Wotherspoon took a different approach, defining (at least in his mind) a polygon that he characterised as an area of CPW circumscribing most of the trees in the northern part of the site. This polygon was said to encompass just under 5 ha. Unfortunately Dr Wotherspoon was unable to point to a figure or diagram in his evidence which accurately depicted this polygon. While giving concurrent evidence Dr Wotherspoon expressed an opinion that his polygon should be enlarged and extended further to the north-east.
35Mr Fanning's view of the extent of CPW changed during the course of the proceedings.
36In his Statement of Evidence and in the Joint Report he essentially adopted Dr Clements' conclusions.
37On the site view he volunteered the opinion that an area of grassland dominated by Themeda australis was derived native grassland as defined in paragraph 6 of the Final Determination and hence could be regarded as part of the CPW on the site. He supported this assessment during the early stages of concurrent evidence but at the conclusion of concurrent evidence he withdrew from his previous stance, coming to the final opinion that there was no CPW on the site.
38The Court was thus presented with three contrasting opinions - that there was no CPW on the site (Mr Fanning); that there was about 0.21 ha, albeit in a degraded and possibly non-viable condition (Dr Clements) and that there was about 5 ha of CPW (Dr Wotherspoon).
39Paragraph 6 of the Final Determination states:
6. The structure of the community varies depending on past and current disturbances, particularly clearing, fire and grazing. Contemporary tree-dominated stands of the community are largely relics or regrowth of originally taller forests or woodlands, which are likely to have had scattered shrubs and a largely continuous grassy groundcover. At some sites, mature trees may exceed 30m tall, although regrowth stands may be shorter than 10m tall. After total or partial clearing, the tree canopy may remain sparse or may regrow to form dense stands of saplings and small trees, which are typically associated with a ground layer of reduced cover and diversity. Either or both of the upper-storey and mid-storey may be absent from the community. Native grasslands derived from clearing of the woodland and forest are also part of this community if they contain characteristic non-woody species listed in paragraph 3.
40The assessment of whether or not a particular area falls within the description of a particular EEC is one which requires evaluation and expert judgement. It is not one where arbitrary, predetermined numerical criteria are often useful. Thus, for example, in Commonwealth of Australia v Randwick City Council (2001) NSWLEC 79, Talbot J decided at [103 - 104] that a defined proportion of species given as characteristic in Final Determinations was not required for a given patch of vegetation to be allocated to an EEC, a view which was also expressed by Spigelman CJ in VAW (Kurri Kurri) Pty Ltd v Scientific Committee (established under s127 of the Threatened Species Conservation Act (1995)) [2003] NSWCA 297(VAW Kurri Kurri) at [7]. More generally it was recognised that the nature of spatial and temporal variation in natural communities was such as to preclude absolute definitional specificity (VAW (Kurri Kurri) at [231 - 233] per Hodgson JA). For a stand to qualify as being part of the EEC, it must conform with the Final Determination but a narrow over-interpretation of the criteria is unhelpful.
41A reductionist approach of attempting to apply the community definition to individual quadrats, without taking into account the context within which each quadrat is set may lead to misleading conclusions. In NHVSS one of the issues debated by the experts was the interpretation of the statement 'shrubs are generally sparse or absent, though they may be locally common ' in paragraph 2 of the Final Determination for White Box Yellow Box Blakeley's Red Gum Woodland. Preston CJ observed at 57:
57 If floristic composition was being assessed by use of quadrats then, depending on the size of the quadrat, the location of the quadrats and the size of the patch of shrubs, at the individual quadrat level, the data could suggest shrub dominance. However, the single quadrat would be unrepresentative of the vegetation of the stand, although illustrative of part of the range of variation in structure and composition of the stand.
42Dr Wotherspoon in his statement of evidence discusses the definition of the term woodland in Australia and referred to a number of standard texts. He demonstrated that there was variation in the basis of definition (including as to whether the canopy was defined by crown cover, projected canopy cover, or projective foliage cover) but woodland however defined encompassed a wide range of density or sparseness of cover. Dr Wotherspoon's approach was at the stand level seeking to delineate an area within the part of the site where trees occurred which, at that scale, would fall within a definition of woodland, rather than the more restricted approach of Clements with the stand partitioned into the patches of trees and intervening areas with each of these assessed separately.
43The difficulty for the Court is in the absence of sufficient detail in Dr Wotherspoon's evidence to precisely define the area of CPW. On the basis of the experience we bring to the Court, and our observations on the view, we are of the opinion that an area could be delineated on the site which is larger than the sum of the patches recognised by Clements, but which would still satisfy the criteria of the final determination. However, we are not in a position to endorse the almost 5 ha area advanced by Dr Wotherspoon.
44We are also of the opinion (based on our observations on the site and by paragraph 6 of the Final Determination) that the Themeda grassland (centred on point 19 in the map entitled 'Detailed mapping of additional patches of vegetation checked by SLR Ecology ' in Mr Fanning's Statement of Evidence) is derived native grassland and hence part of the Critically Endangered Ecological Community.
45The inability, on the basis of the evidence before us, to determine the extent of CPW on the site imposes major limitations on the ability to properly assess the significance of the impact of the proposal.
46Mr Fanning (based on the work of Dr Clements and his own studies) expressed the view that there would be no significant effects of the proposal. Dr Wotherspoon was of the opinion that there was likely to be a significant impact and that for further assessment a SIS was required.
47The starting point in deciding whether there are likely to be significant effects are the factors in s5A of the EPA Act (NHVSS at [85] and [86 ] and citations therein). This section includes (in subsection (2)) what is colloquially referred to as the '7-part test'. It is important to recognise that the 7-part test differs from its predecessor 8-part test in having a local rather than regional context. Early cases that addressed the requirement for a SIS were under the 8-part test regime, and this needs to be borne in mind when considering the outcomes of those cases.
48In determining whether there is likely to be a significant effect on a threatened ecological community as a consequence of a proposed development, s 5A(1) of the EPA Act requires us to consider the relevant matters in s 5A(2) and apply the assessment guidelines prepared by the (then) Department of Environment and Climate Change in 2007.
49The terminology '7-part test' is misleading in that it would be only under exceptional circumstances that all parts arise in relation to a single site, and for each particular species, population or community under assessment only certain parts are relevant. In the case of an EEC the parts of s 5 A (2) which are applicable are parts (c) (d) and (g).
50Section 5 A(2)(c) states
(c) in the case of an endangered ecological community or critically endangered ecological community, whether the action proposed:
(i) is likely to have an adverse effect on the extent of the ecological community such that its local occurrence is likely to be placed at risk of extinction, or
(ii) is likely to substantially and adversely modify the composition of the ecological community such that its local occurrence is likely to be placed at risk of extinction,
51As the proposal is for the complete clearance of the site subparagraph (1) must be answered in the affirmative.
52Section 5A (2) (d) deals with affects on habitat and states:
(d) in relation to the habitat of a threatened species, population or ecological community:
(i) the extent to which habitat is likely to be removed or modified as a result of the action proposed, and
(ii) whether an area of habitat is likely to become fragmented or isolated from other areas of habitat as a result of the proposed action, and
(iii) the importance of the habitat to be removed, modified, fragmented or isolated to the long-term survival of the species, population or ecological community in the locality,
53As the whole site is to be cleared and levelled the total area of CPW (whatever its extent) will be removed.
54Whether there are ecological linkages between the site and other ' areas of habitat' was the subject of discussion during concurrent evidence. It was agreed that the CPW on the site was not contiguous with any area of CPW offsite. Nevertheless it was also agreed that they were likely to be organisms (such as birds, bats and many insects) which would move between the site and other areas, and that there could be gene flow (in the form of pollen or seeds) between the site and other stands of CPW. To Mr Fanning this implied that the site should not be considered as an isolated local occurrence as the 'locality' covered a much larger area (although this interpretation of locality is at variance with that provided in the Guidelines).
55As the habitat on the site will be totally removed it will not be fragmented or isolated from other areas. However, in respect of other areas, the loss of habitat on the site may result in the loss of one of the islands of habitat utilised by mobile species.
56Mr Robson for the applicant argued that the area to be removed was of low quality and low viability. However, the large number of CPW species observed on the view scattered across the site indicates that ecosystem processes associated with regeneration were still occurring. Mr Seton drew attention to the following paragraph in the Cumberland Plain Recovery Plan to argue that while the Plan might, in terms of actions by government departments, give priority to higher quality sites this did not preclude local government measures to protect other sites which while in poorer condition were nevertheless of value.
The identification of regional conservation priorities within this Plan should not be misinterpreted as underrating the significance of remnant vegetation outside the priority conservation lands. This plan simply attempts to provide a practical, realistic conservation focus for DECCW and others. While resources at a regional level should be strategically focussed on the PCLs [Primary Conservation Lands], implementation of best practice management on areas of local conservation significance will contribute to the long-term viability of biodiversity and will continue to be encouraged by DECCW. Important work is being undertaken by other agencies, local governments and communities to protect and restore land outside the PCLs that is of local conservation significance. This work in coordination with appropriate planning controls, will provide a valuable compliment to the PCLs and will assist in conserving biodiversity more generally.
57Dr Clements argued in her report that, within the powerline easement, there was no possibility of maintaining or re-establishing CPW because of the obligations on TransGrid to maintain the integrity of the electricity supply. She pointed particularly to the prohibition on occurrence of any vegetation more than 4 m high. Dr Wotherspoon argued that the slashing and mowing regime which had been applied to some years had not precluded the survival and regeneration of CPW species and that a modified form of CPW would be compatible with continuing prudent management of the easement.
58Section 5A (2) (g) refers to threatening processes:
(g) whether the action proposed constitutes or is part of a key threatening process or is likely to result in the operation of, or increase the impact of, a key threatening process.
59Clearing of native vegetation is a Key Threatening Process on Schedule 3 of the TSC Act .The proposal involves the complete clearing vegetation, native or otherwise, on the site.
60Thus, for all relevant parts of s 5A (2) there are responses that indicate a positive (affirmative) answer to the question of whether there are likely to be significant effects. However, the outcome of the s 5A(2) consideration is only one input into the determination of the question (NHVSS at [113]). Other factors can be taken into account where relevant.
61One of the factors which could be taken into account is whether ameliorative measures are proposed that would reduce that significance of the impacts (NHVSS at [115]). This is a matter which has arisen in a number of cases, each of which has been determined on its own facts - it is not simply a matter of any ameliorative proposals being sufficient to eliminate significant effects.
62Whether or not ameliorative measures are part of the proposal depends on the nature of the proposal before the Court. The proposal, as we believe it to be, is described in paragraphs 6 and 7 of this judgment. Mr Seton argued that the development application was purely for the earthworks and infrastructure, and did not include ameliorative measures. Mr Robson on the other hand pointed to the inclusion within the development application of other plans and reports, including that of Dr Clements which proposed compensation planting, and to the reference in the without prejudice draft conditions of consent to these plans and reports. In addition the draft conditions include general measures to protect aspects of biodiversity.
63The council's bundle of documents includes copies of email exchanges between council officers and the applicant which indicate that council officers had assumed some other plans to be part of the application, whereas the applicant intended them to be merely indicative illustrations - details of individual buildings and the layout and size of, for example, offices would be matters subject to separate, future, DAs. Although a number of the plans are labelled "master plan", there does not appear to have been a formal masterplan approval.
64Dr Clements' Assessment of Significance report included as Figure 4 what is said to be the 'Current master plan and proposed conservation and tree planting areas'. This figure does not appear to show the proposed detention basins shown on other plans within the application, and which would appear to fall within the proposed conservation areas.
65Given that we have determined that the area of CPW on the site is likely to be greater than the 0.21 ha suggested by Dr Clements the adequacy of the current proposed conservation measures would in any case need to be revisited.