The Director General's concurrence
20 Four letters of relevance to this application from the Director General of the DEC and its successor the DECC were in evidence. The first, already referred to in this judgment, was in April 2004. It contained the Director General's requirements in respect of the SIS that should accompany the development application.
21 The second communication was dated 6 April 2006. It stated, on the basis of an assessment by the council's environmental assessment officer, Mr Mark Stables, that the SIS did not comply with Director General's requirements. It requested a revision of the SIS to comply with those requirements. Among other things, it specified the additional information sought as " an overlay of the development footprint with the management zones of the Somersby Industrial Park Draft Plan of Management, specific details of what threatened species values will be impacted upon by any encroachment of development into the management zones, and a statement of whether any or all of the conditions of the assumed concurrence are proposed to be adhered to".
22 The third communication, dated 12 October 2007, was in response to the council's submission of the amended application, for which the applicant received leave from the Court in August 2007. The letter states that the information submitted by the applicant is insufficient to enable an assessment of the likely impact on threatened species. The following additional information was sought.
· Details of whether or not the amended proposal complies with the conditions of the assumed concurrence.
· Information on whether the amended proposal complies with the Plan of Management for the Somersby Industrial Park, including whether there is an incursion into management zones, and, if so, details on its size, significance and its likely impact on threatened species and biodiversity. Detailed information on threatened species Hibbertia procumbens, Red Crowned Toadlet and Giant Burrowing Frog should also be included, as they are known or considered highly likely on the subject site.
· An environmental assessment report together with appropriate survey information on threatened species (both flora and fauna), their habitat and biodiversity issues in general, including details on vegetation communities and habitat types present.
23 The letter re-states the position expressed in the assumed concurrence given in November 2005, namely that it is highly unlikely that concurrence would be granted to development within the management zones.
24 The fourth communication, dated 20 November 2007, has already been referred in paragraph 15. It states that
The DECC has reviewed the report submitted by Ecotone and formed the opinion that the revised development proposal does not satisfy the assumed concurrence nor does it provide sufficient justification to permit development in a management zone.
25 The letter provides four reasons for the above conclusion, ie
· The amended proposal does not comply with the conditions of the assumed concurrence, given that it encroaches a threatened species management zone, Management Zone 1(d) _ Hibbertia procumbens habitat.
· The management zones set up under the Plan of Management and the assumed concurrence have been specifically set aside and agreed upon for conservation purposes. If sound and compelling reasons are put forward to allow development within a management zone, the proposal must be supported by appropriate mitigation and offset measures to compensate for the loss or impact on threatened species management zones.
· The report does not present a compelling argument to encroach the management zones. Areas recently burnt, if allowed to regenerate, are highly likely to provide suitable habitat for the threatened species they were set aside to protect.
· The report indicates that Hibbertia procumbens has not re-established over the site since it was burnt by a bushfire in January 2006. The applicant's experts attribute this to low densities of the species prior to the fire, the fire intensity and the subsequent death of adult plants and ongoing drought conditions. The report also states "no individuals of Hibbertia procumbens were flowering at the time of the site visit, which made detection and identification a little more difficult". This species primarily flowers in October and into early summer. It follows that targeted surveys are best conducted during these months and the failure to observe regeneration of this species, at the time the survey was conducted, does not mean that the management zones will not support this species in the future.
26 The letter goes on to say that, given the degree of uncertainty expressed in the report with regard to the likely impacts on known threatened species, and the distribution/density of such species across the site, the DECC believes that the precautionary principle should be applied. This requires avoiding development in management zones until such time as the status of the threatened taxa is reliably assessed and the objectives of the assumed concurrence are satisfied.