RISK IDENTIFICATION RISK ANALYSIS RISK EVALUATION RISK TREATMENT Event / Incident Potential Impact Causes Severity Likelihood Risk Ranking Safeguards / Management Methods USE OF ACCESS ROUTES AND WELL SITES Removal of native vegetation and potential fauna habitat Loss of native vegetation Destruction of fauna habitat Loss of declared rare flora or priority species Onsite flora and fauna not previously determined during ecological assessment(s) Uncontrolled vehicle access Unauthorised clearing Off-road driving to access sites 3 1 Low Desktop assessment indicates that declared flora unlikely to occur in proposed survey area No additional clearing required for operations, except for potential regrowth on well site, camp site and access tracks Only existing tracks to be used No off-road driving Parking limited to designated cleared areas Vehicle collision with fauna Fauna death or injury Disturbance of nesting or breeding sites Fauna entrapment in trenches associated with operations Unpredictable movement of animals Vehicles travelling at high speeds Vehicles travelling at dawn or dusk or in times of poor visibility 2 2 Low Induction of all personnel to include information on potential for fauna injury from vehicle collision Awareness of fauna protection strategies highlighted at toolbox meetings Limit vehicle activities to daylight hours when fauna are more visible or inactive and only drive at night in the event of an emergency Limit vehicle speeds to 60 km/h on access trails and 40 km/h in difficult areas, except in the event of an emergency. 10 km/h on well
initiated if needed Disturbance of indigenous heritage site(s) Damage to indigenous heritage sites Onsite indigenous heritage sites not previously determined during ethnographic study Personnel entering indigenous heritage site 4 1 Low Operations will use existing infrastructure, so no additional clearing required No access to areas other than those cleared by CLC Personnel prohibited from leaving cleared areas during induction Ongoing consultation with CLC Introduction of noxious weeds and vermin, exotic species, flora and animal diseases Infection of soil with diseases and pathogens Infestation of weeds in cleared areas Exotic species could become invasive if introduced, with unpredictable consequences for native species Encroachment into Weeds and contaminated soil on vehicles Weeds introduced in imported materials Transit through dieback affected areas Animals attracted to food wastes and water source 4 2 Medium Equipment and vehicles (including bulldozer billy pans) cleaned in accordance with Checklist (Appendix 14) and inspected for soil, plant material and pest animal contamination prior to mobilisation All imported material is locally sourced and weed free All personnel trained/refreshed during induction in the need for weed hygiene management Food scraps collected and disposed of in animal pest proof bins Vehicles, including bulldozer billy pans, cleaned when leaving areas identified with
disclosures listed by CAS number so contents of all chemicals used are known. Loss of fracture fluid or produced fluid at surface Physical or chemical impacts on flora, fauna, soil, surface water or groundwater from released fluids Exceeding tested pressure Equipment failure 4 1 Low Pressure test well. Fracturing pressure will not exceed pressure test. Gas detection equipment at well head. API accredited well control equipment shall be used during fracturing and testing operations until the well head is installed. Noise Disturbance to local residents, wildlife or adjacent activities Noise generated during routine operations 1 1 Low General area has low population density and is remote from high density populations. Contact landowners prior to accessing station tracks and working on well sites. Provide landowners with contact details of OCR. Facility lighting Disturbance to local residents, wildlife or adjacent activities Facility lighting required for safety during 24 hour operations 1 1 Low General area has low population density and is remote from high density populations. Well sites not located within sensitive environments. Unnecessary lights turned off particularly during insect plagues and yellow lights used
where appropriate. Visual amenity Disturbance to local residents Vertical elevation of drilling rig 1 1 Low General area has low population density and is remote from high density populations. Disturbance or damage to infrastructure and services Disruption of services to local residents e.g. power, telecommunication Damage to fence lines and farm gates Unknown infrastructure located in the planned fracturing location Human error 2 2 Low General area has low population density and is remote from high density populations, so little infrastructure present. Gates to be left as found. Re-instatement of all fences and affected infrastructure to pre-operational conditions as agreed with the relevant landowners. Third party access Potential interference with operations Injuries from machinery to third parties Lack of signage, gates and/or vigilance 2 2 Low Access road will be gated Adequate signage (e.g. no unauthorised access) on gates and access trails Site will be manned constantly during operations Dust Excessive atmospheric dust pollution Soil degradation and loss Dust caused by driving to/from and around well sites and during operations 1 2 Low Area has low population density If dust generation becomes a problem, campsite, drill pad and access tracks will be sprayed as required. Minimise vehicle use along dirt roads/tracks Reduce vehicle speeds along dirt