Detailed Design of Sediment Basin SB1, Ralston Quarry Project, Mount Tenandra, NSW

The proposal for the Ralston Quarry project consists of a hard rock quarry that will operate in two stages. In Stage 1, up to 490,000 tonnes of quarry products (fill, pavements, sealing and asphalt aggregates and ballast) will be extracted per annum for a period of up to 5 years, subject to the progress of the Inland Rail Project and associated road upgrade projects. Stage 2 will see the extraction of a maximum of 100,000 tonnes of the quarry materials  per annum for a period of 20 years. Sediment basin SB1 of volume 10.57ML is proposed for Stage 1 of the project. It will retain runoff from disturbed areas of the quarry site and provide water for use during quarry operations. Engineering Remastered completed the design and documentation of sediment basin SB1 for submission to the client Maas Group for construction purposes. The key design features included the access track to the basin, the sediment storage pond of volume 3.52 ML, the upper settling pond of volume 7.05 ML, the maintenance access track located between the sediment storage and the upper settling ponds, the culverts located under the maintenance access track for stormwater discharge into the sediment storage pond, the chutes for stormwater discharge into the basin, the energy dissipators, and the basin’s spillway for discharge of stormwater overflow into the nearest creek. The plans below show some deliverables on Engineering Remastered’s title blocks.

The proposed eighteen-hole Lynwood Miniature Golf Course will be covered by synthetic grass and will include rockwork, timber railway sleepers and landscape zones. Each golf green has two cups and flags. Stormwater will be collected through the cups and conveyed into a piped drainage system for discharge in an open channel that runs through the mini golf course. Fences and bunds are proposed at the perimeter of the course and between the golf greens and the one channel. Engineering Remastered  completed for Stellen Consulting, the detailed design of the mini golf coursewhich was submitted to the client for construction purposes. The design was undertaken using the proposed concept design contours provided by the client. The reference plans were the development application drawings prepared by Stellen Consulting. The detailed design optimised the use of earthworks for the mini golf course construction. The exact locations at the perimeter of mini golf and golf greens, where fences and bunds were required, were identified. The open channel which run through the golf course was designed to convey the 1% AEP design storm event through to the discharge point which was Pitt Town Lagoon.  The plans below were the deliverables for the project, now showing on Engineering Remastered's title blocks.

 The project consisted of the design of footpaths, the regrading of some playgrounds, and the design of the stormwater and sewage drainage systems. Engineering Remastered completed for Stellen Consulting and for submission to the client, the detailed design of the footpaths and the regrading of the village green. The design was completed in accordance with the relevant Austroads Guides to Road Design and Australian Standards. The concept architectural plans were the reference drawings for the detailed design.  The footpath designs took into account the Arboricultural Impact Assessment Report, Tree Protection Specification and Tree Protection Plan prepared by a consultant for Hunters Hill Council as well as feedback from the Council. The removal of tress was avoided.  The finished surface levels of the proposed design were to assist Stellen Consulting in carrying out the detailed design of the stormwater and sewage drainage systems. The deliverables below, now showing on Engineering Remastered's title blocks, are the earthworks plans for the project.