Kate Goodchild, Luke Dorsett, Roozbeh Araghi and Cindy Low died when the ride at the Gold Coast theme park malfunctioned.
The families of the four deceased will be invited to create a lasting memorial at the theme park.
She added that an independent engineering firm has already started a review of all Dreamworld and Whitewater World rides and related operating systems.
Ardent Leisure said decommissioning the ride was "the only respectful and appropriate course of action".
"No ride will open at Dreamworld without a methodical process of mechanical and operational review overseen by no less than four organisations", he said.
ABC reported that Dreamworld head Craig Davidson is expected to announce plans about having the victims' families at the theme park for the creation of the memorials.
The raft immediately following hit the stuck raft at full speed, spilling the victims into the water and the conveyor belt mechanism.
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For her part, Al Haite urged effective action to over the climate change phenomenon which threatens the future of the whole world. Once the deal took effect on Friday, the rules require at least four years to pass before the U.S. could withdraw.
The fate of the theme park will become clearer this week as the owner, Ardent Leisure, work towards a reopening in the lead-up to the vital holiday season. Four people died while two children escaped.
It comes as the new Ardent chairman George Venardos took over on Monday from the retiring Neil Balnaves, who held the position for 15 years.
Dreamworld Australia would only reopen until WorkPlace Health and Safety Queensland completes an ongoing audit. Intamin has distanced itself from the tragedy, saying it had "not built or supplied" the ride to Dreamworld.
The police investigation into the accident closed earlier this week but Dreamworld is yet to announce when the park will reopen.
The share price of the company fell nearly 15% the day after the accident.
Dreamworld bosses say they won't be rushed into re-opening the Gold Coast theme park. But it remains unclear whether the company has an industrial special risks policy to deal with the costs of a protracted business interruption.