Yamba Bypass (Stage 1) – Species Impact Statement (SIS)

Ecological Assessment | Reporting | Mapping


Clarence Valley Council identified a corridor for stage 1 of the Yamba Bypass and commissioned initial studies. Following the findings that several threatened species may be impacted by the proposal, a Species Impact Statement (SIS) was required, with Director General’s Requirements (DGRs) issued by the Office of Environment and Heritage (OEH). AWC completed a detailed trapping program for Squirrel Gliders in the locality, in addition to a broad-scale survey for the Grey-crowned Babbler in the greater Yamba area. Following the field assessment, the SIS then examined the project in detail to provide guidance on mitigating threats to these key species.


  • Targeted survey for the Squirrel Glider and Grey-crowned Babbler
  • Extensive literature review
  • Detailed impact assessment and mitigation strategies

Partners & Stakeholders

  • Clarence Valley Council


  • Improved knowledge on the movements of a local population of the Squirrel Glider within a peri-urban environment
  • SIS accepted

Project Facts

Client: Clarence Valley Council

Challenges: Demanding fieldwork schedule and detailed reporting and mapping to meet the DGRs