Schedule Reference
Current Wording
Proposed Wording
Justification
H4
Design and construction of a regulated structure
All regulated structures must be designed by, and constructed under the supervision of, a suitably qualified and experienced person in accordance with the requirements of the Manual for Assessing Consequence Categories and Hydraulic Performance of Structures (EM635) ((ESR/2016/19338) and - be designed and constructed with due consideration given to ensuring that the design integrity would not be compromised on account of:
Provides additional assurances that outcomes of seepage assessments and updated seepage management plans will be incorporated into future details design works.
o floodwaters from entering the regulated dam from any watercourse or drainage line; and
wall failure due to erosion by floodwaters arising from any watercourse or drainage line.
o
- have the floor and sides of the dam designed and constructed to prevent or minimise the passage of the wetting front and any entrained contaminants through either the floor or sides of the dam during the operational life of the dam and for any period of decommissioning and rehabilitation of the dam Prior to 30 June 2027, the holder of this EA must provide a geotechnical investigation report to the administering authority. This geotechnical investigation report must be prepared by an appropriately qualified person and approved by a Registered Professional Engineer of Queensland. The report must include the following:· - Summary of the geotechnical investigation undertaken including bore logs and any CPT data; · Summary of laboratory testing and· investigation findings.· - how the geotechnical information will be used to inform the basis of design· - factor of safety analysis· - geotechnical risk management
H31
NA – New condition proposed
Provides additional assurances that the geotechnical works are conducted to inform detailed design.
Project number: 25B061
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