We have made a ‘zero carbon’ commitment for the operation of the ecoretreat. All energy consumption that is not catered for by the significant solar investment will be sourced from 100% renewable Australian wind or solar.
ONSITE WATER MANAGEMENT
Water is collected from a ten hectare catchment area into two interconnecting dams. The water is then treated in a state of the art treatment plant and stored in six large tanks at a high point of the site. This water is then distributed by gravity to service the needs of the property. We would increase the number of tanks to collect water from the treehouse and rainforest cabins.
WASTE AND SEWAGE TREATMENT
All onsite sewerage is pumped to the onsite sewage treatment plant. The treated effluent is then sanitised and used to irrigate areas of ongoing bush regeneration.
The preliminary assessment of daily wastewater generation including the ecotourism addition has been estimated as 23.7 kL/d. The capacity of the existing wastewater treatment plant is 18.1 kL/d. A proposed upgrade to the wastewater treatment plant with a capacity of 30kL/d has been prepared. This is able to be accommodated within the footprint of the approved plant. The treated effluent irrigation system has a current capacity of approximately 50 kL/d which is sufficient to accommodate the increased flow.
All proposed roofs have been designed to cater for a 250kW solar PV system, with all existing roofs retrofitted to suit. Locating the panels on roofs allows for direct to the source usage. Excess energy would be stored in onsite batteries. With energy efficiency measures applied, this equates to 100% of the summer consumption and over 40% of winter consumption. The residual energy sourced over winter will be 100% renewable. The energy consumption which is either avoided entirely or matched to a renewable source is over 500,000kWh per annum, meaning with the proposed combination of energy efficiency and renewable energy 477 tonnes of CO2e annually is avoided.
MATERIAL LIFECYCLE COST ANALYSIS
A full lifecycle analysis will be undertaken as part of the detailed design process. This ensures the greenest materials are used both in construction and operation. Gas would not be installed in any new buildings. Renewable, durable, non-toxic and environmentally sustainable materials would be used throughout the ecoretreat.
MAXIMISING THERMAL PERFORMANCE
High R-value to walls, floors and ceilings, minimum 5 star systems and appliances and LED lighting are some of the measures that would contribute toward maximising thermal performance.
OPERABILITY AND PASSIVE COOLING
All buildings are designed for optimal operability and passive cooling through cross ventilation. The strategic placement of louvers and eave overhangs reduces the need for temperature control.
Considered building orientation and large openings would maximise sun control in both summer and winter and allow natural day lighting.
The only onsite modes of transport would be electric and 100% renewable. The ecoretreat is designed as a walkable site with pedestrian paths, boardwalks and nature trails. Electric buggies, electric bikes and onsite charge stations would be provided.
An operational management plan will outline the ongoing commitment to zero carbon waste practices, use of chemicals and habitat zones. For example, all food and green waste will be treated onsite through compost and worm farms. There would be no single use plastics (ie no small single use shampoo and conditioner bottles). Materials would be purchased in bulk. Local sourcing would be prioritised. Onsite waste management facilities would process reusable and recyclable resources.
The objective is that nothing is brought into the ecoretreat that is not durable, biodegradable or recyclable.
Guest welcome packs would provide guests with an understanding of the habitat values of the property as well as the sensitivities of the surrounding area. They would educate guests on habits that can help to minimise energy use not only onsite but in their daily lives.
SUSTAINABILITY DURING CONSTRUCTION
Modular, pre-fabricated construction technologies would reduce construction related impacts. Locally sourced, lightweight yet durable materials would be used. Waste streams during construction would be managed through re-use of materials within the development zone.