In a budget estimates update, the Defence informed Parliament that its 2019/20 spending on training troops for toxic environments had been revised down from $1.2 million to $200,000 at the Kapooka Military Area.

The same type of spending was revised down from $400,000 to $100,000 at RAAF Base Wagga.

According to a previous Defence publication, "the aim of the project is to provide new and upgraded facilities...to support the training of personnel against exposure to Toxic Industrial Materials and Chemical, Biological, Radiological and Nuclear weapons".

Defence has previously released images of Royal Australian Air Force personnel from a Wagga-based recruit unit completing toxic environment training with gas masks and enclosed suits.

The project involved building or refurbishing "enclosed building, undercover outdoor shelter, car parking and service connections" at 14 military sites across Australia along with lighting and fencing to "enable the safe and secure storage of safety gear".

RAAF Wagga was due to receive a secure storage upgrade and Kapooka, the starting point for the Army's infantry recruits was due to receive a new training building and secure storage, according to a 2018 report.

A Defence spokesperson said "the budget for both Kapooka Military Area and RAAF Base Wagga remains unchanged".

"Funding adjustments have been made to align with planned construction activities," the spokesperson said.

The budget update to parliament also contained an additional $1.8 million in spending on a satellite ground station at Kapooka that was designed to improve communications with military units operating in Australia and overseas.

"There has been no additional funding provided to the JP2008 Phase B2 Wagga Military Satellite Capability Wideband Terrestrial Infrastructure Project," a Defence spokesperson said.

"The $1.8 million figure in the Additional Estimates Statements for Financial Year (FY) 2019/20 refers to the final payment to the contractor for the delivery of the works."

Defence has spent a total of $6.9 million on the project, which involves building three new satellite dishes at Kapooka.