Environmental Protection License

Environment Protection Licence No. 2274

Licence Information

Perisher Blue Pty Ltd owns and operates the Skitube Alpine Railway which provides train services between Bullocks Flat, Perisher Valley and Blue Cow within the Kosciuszko National Park in South Eastern NSW.

Perisher is the holder of Environment Protection Licence No. 2274 (EPL 2274), which licences the Bullocks Flat Sewage Treatment Plant (STP). The STP is located nearby to the Bullocks Flat Skitube Terminal, on the Alpine Way via Jindabyne NSW. The STP operates year-round to service the needs of the Terminal and its associated offices and workshop facilities.

This website provides information about the environmental performance of the STP, to meet Perisher’s obligations under the Protection of the Environment Operations Act 1997 (NSW) (PoEO Act).

The full licence can be viewed on the EPA website HERE

Complaints Line: Please direct any complaints or comments in relation to the STP, including reporting of overflows, to Perisher by phoning 1300 938 652 or emailing This email address is being protected from spambots. You need JavaScript enabled to view it..

Monitoring / Discharge Points and Areas

The following monitoring/ discharge points are outlined in Condition P1.2 of EPL 2274, and are indicated on the attached map:

  • Point 1 – effluent volume monitoring, immediately prior to the UV disinfection facility.
  • Point 3 – environmental monitoring, in Thredbo River, approx 20m upstream of the weir,
  • Point 4 - environmental monitoring point, in Thredbo River, approx 100m downstream of the weir
  • Point 5 – Discharge to Waters and Final Effluent Quality Monitoring, at the outlet of the UV disinfection unit
  • Point 6 – environmental monitoring, in the weir at the end of the wetland system

EPL 2274, requires that sampling at Monitoring Points 3, 4, 5 and 6 be carried out fortnightly between 1 June and 30 September and quarterly between 1 October and 31 May.

Concentration Limits

The concentration limits specified in EPL 2274 for Monitoring Point 5 only, are shown in Table 1 below:

Table 1- Monitoring Point 5 Concentration Limits


Units of Measure

90 percentile concentration limit

100 percentile concentration limit

Biochemical oxygen demand

milligrams per litre



Faecal coliforms

colony forming units  per 100 millilitres



Nitrogen (ammonia)

milligrams per litre



Nitrogen (total)

milligrams per litre



Oil and Grease

milligrams per litre







Phosphorous (total)

milligrams per litre



Total suspended solids

milligrams per litre




Monitoring Results - a spreadsheet displaying Bullocks Flat Sewage Treatment Plant Monitoring Results.

Site Map - a site map showing the location of the Bullocks Flat Sewage Treatment Plant and relevant monitoring points. 

Pollution Incident Response Management Plan - an extract from Perisher's STP Pollution Incident Response Management Plan relating to communication with the community and relevant authorities. 


Resort Info