The Eastern Goldfields Pipeline System (EGPS) comprises the Murrin Murrin Lateral and four transmission pipelines extending from the Murrin Murrin Lateral:

  • The 85-kilometre Murrin Murrin Lateral is connected to the Goldfields Gas Pipeline and transports gas to the Murrin Murrin mine site approximately 69 kilometres east of Leonora, and to the Eastern Goldfields Pipeline.
  • The 293-kilometre Eastern Goldfields Pipeline connects the Murrin Murrin Lateral Pipeline to the Sunrise Dam, Tropicana and Granny Smith Gold Mines in the Eastern Goldfields Region of Western Australia.
  • The 5.7-kilometre Gwalia Lateral delivers gas from the Murrin Murrin Lateral to the Gwalia mine site just south of Leonora.
  • The 5-kilometre Mount Morgans Gas Pipeline delivers gas from the Eastern Goldfields Pipeline to the Mt Morgan Gold Mine, approximately 20 kilometres west of Laverton.
  • The 198-kilometre Yamarna Gas Pipeline runs from the Eastern Goldfields Pipeline to the Gruyere Gold Mine Site in the eastern Yilgarn (under construction).

A diagram of the EGPS can be found here, showing:

  • Pipeline capacities.
  • Details of receipt and delivery points.
  • Key facilities connected to the system.
  • Technical and physical characteristics of the pipelines.
APA Ownership


Regulatory Status

All pipelines that make up the EGPS are non-scheme pipelines.

The Gwalia, Mount Morgans and Yamarna gas pipelines have current exemptions from reporting requirements under Part 23 of the National Gas Rules, as they are single shipper pipelines.

Capacity and Services

The following standard services are offered on the EGPS, subject to available capacity:

  • Firm transport.
  • Interruptible transport.
  • In pipe trade.

A description of these services, including APA’s Standard Gas Transportation Agreement (SGTA) can be found on the gas transmission services page.

Relevant tariffs for standard services on the Murrin Murrin Lateral and Eastern Goldfields Pipeline can be found on the current tariffs and terms page.

Non-standard services or alternative terms may be available by negotiation.

Notes on services

Firm services are available over varying terms as set out on the gas transmission services page.

Interruptible services are only available while the pipeline is fully contracted in respect of the corresponding firm service.

APA is progressively rolling out In pipe trade service capability on all key pipelines. APA will prioritise this service rollout in accordance with shipper demand.

Service Availability Information

36-month uncontracted capacity outlook
12-month capacity outlook

Notes on capacity

The 12-month capacity outlook for the Eastern Goldfields Pipeline System is reported under the Goldfields Gas Pipeline facility on the West Australian Gas Bulletin Board.

Policies, Procedures and Requirements

Metering and Measurement

Metering and Measurement obligations are outlined in the SGTA and for this pipeline are set out here.

Gas Specification

In Western Australia, transmission pipeline gas specifications are governed by state legislation — the Gas Supply (Gas Quality Specifications) Act 2009 (2009 Act) — and by regulations made under that Act. The 2009 Act provides for a Western Australian standard specification, which is set out in the regulations (with some variations for particular pipelines), and a reference specification for each pipeline. These specifications are necessary for the operation of the scheme of the legislation.

The EGPS is a prescribed 3A pipeline under the West Australia Gas Supply (Gas Quality Specifications) Regulations 2010. The reference specifications for the EGPS are set out in clause 3A of Schedule 2 to the Regulations.

APA will measure and/or monitor gas quality in accordance with relevant obligations under contract. Quality obligations are outlined in the SGTA and the 2009 Act and underlying regulations, where applicable.

Credit support

APA has minimum credit support requirements that are a pre-condition to gaining access to pipeline services. APA’s credit support requirements are set out here.


If you are interested in acquiring gas transmission services for this pipeline, you can contact us on 08 6189 4300 to discuss your requirements. Alternatively, you may wish to make an enquiry by emailing us at

We encourage potential customers to contact APA early when considering their gas supply and transport needs. Early discussion of needs improves the likelihood that APA can tailor services to meet them.

Formal Access Request

For APA’s non-scheme pipelines, prospective customers have a right to make a Formal Access Request pursuant to Rule 559 of the National Gas Rules. Lodging a Formal Access Request triggers a formal process of Access Offer and information exchange between APA and the potential customer. Details are in APA’s User Access Guide.

Potential customers do not have to submit a Formal Access Request to gain access to an APA pipeline.

Potential customers can make a Formal Access Request by completing in full the relevant User Access Request Form and emailing it to