Eurobodalla Integrated Water Cycle Management Strategy

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192 Eurobodalla Integrated Water Cycle Management Strategy Table 9-38 Triple Bottom Line Assessment of Scenarios for Dalmeny, Kianga and Narooma ENVIRONMENTAL Traditional Approach 2 3 Efficient use of fresh water resource 0 2 3 Minimises low flow water extractions 0 0 3 Minimises green house gas emissions 2 2 1 Minimises pollutants being discharged to the aquatic environment 1 3 3 Minimises urban stormwater volumes 0 3 3 Ensures sustainable practices 1 2 3 Environmental Sum 4 12 16 Environmental Rank 3 2 1 SOCIAL Improves security of town water supply 0 0 2 Improves the quality of drinking water 0 0 0 Improves urban water service levels 2 3 3 Increase public awareness of urban water issues Minimises non-compliance to policy and legislation 1 2 3 2 2 2 Protects public health 2 3 3 Social Sum 7 10 13 Social Rank 3 2 1 FINANCIAL NPV ($m over 30 years) 2.7 4.6 8.5 Financial Rank 1 2 3 TBL Score 7 6 5 TBL Rank 3 2 1 According to the TBL assessment, integrated option 3 would produce the best outcome in terms of the environmental, social and financial criteria. Option 3 represents the option with the greatest integration and includes improving the current sewage treatment system, increasing treatment capacity; incorporating stormwater quality and quantity control measures and stormwater reuse.
9.13 Mystery Bay 9.13.1 Background Eurobodalla Integrated Water Cycle Management Strategy The Village Landscape Mystery Bay is located in the south easterly region of the Shire. The village is situated on the coastline at Cape Dromedary and is surrounded by farmland to the west. Access to the village is from the Princess Highway, see Figure 9-21 below. Figure 9-21 Mystery Bay According to the 2001 census, the population of Mystery bay is 185, and there are 111 dwellings. The 1996 housing monitor stated there were 243 vacant lots in Mystery Bay, with an annual demand of 6 lots. This analysis indicates that there is sufficient land available for release to supply the predicted population growth. Existing Water Management Systems Mystery Bay is connected to the regional water supply scheme through the 1.2 ML Mystery Bay Reservoir. This has sufficient capacity to supply the predicted 2032 peak day demand of 252 kL/d. The village is serviced by on site systems. According to the GIS, there are currently 93 onsite treatment facilities. Over 50% of these are septic tanks with effluent disposal by adsorption trench, which are unsuitable for the soil conditions, and nearly an additional 10% are septic tanks with effluent pump-out. The remaining systems utilise aerated processes that give higher levels of nutrient removal than septic systems. 193
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xviii TABLES Eurobodalla Integrated
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FACT SHEET 3 Rainwater Tanks 18 Eur
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FACT SHEET 9 Loss Reduction 24 Euro
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38 Number of Persons 2,500 2,000 1,
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42 % Occupancy 80% 70% 60% 50% 40%
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46 Annual Volume (ML/Yr) 2,500 2,00
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48 Demand ML/a Eurobodalla Integrat
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6.5.3 Stormwater Issues 58 Euroboda
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8.3.2 Immediate Measures 84 Eurobod
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9.2 South Durras 9.2.1 Background 1
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124 Provision of full reticulated s
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132 Stormwater Eurobodalla Integrat
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9.5 Mogo 9.5.1 Background 140 Eurob
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Page 254 and 255: 228 SCENARIO 1 Regional Water Suppl
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