Table A1.3 (continued) Framework element and components Activity Element 3: Preventive measures for recycled water management Components: Pipework (colour coded) and signage. • Preventive measures and multiple Education program for golf course employees. • barriers Exposure reduced by: • only allowing irrigation between midnight and 5 am – Human health buffer zones of 30 m between edge of spray irrigated area and – Preventive measures to manage nearest private land risks to human health were as outside row of sprinklers 180° inward throwing – follows: no irrigation when windy. – Lagoon detention time • Environmental performance reduced concentrations of Preventive measures to manage risks to the environment were as pathogens by several follows: logs. Median number of Nutrient content of recycled water to be considered when determining are expected to be E. coli • maintained at <1000/100 fertiliser requirements. Greens of fine turf should not be irrigated mL. with recycled water as excessive nutrients would be applied. Golf course storage protected • Irrigation scheduling devices and controls to monitor and/or control from human and livestock waste. • water application rates, soil moisture, and water movement through Backflow prevention and • the soil. Use a leaching fraction to maintain acceptable soil salinity cross-connection control at levels. all irrigation sites. Lagoon storage (minimum 60 days) Critical control points • Night-time irrigation • Element 4: Operational procedures and process control Operational procedures identified and documented for the Components: • treatment plant and the irrigation system. Operational procedures Human health Operational monitoring Monitoring requirements in relation to human health included: standard wastewater plant requirements, such as soluble • biochemical oxygen demand (BOD), etc flow rates (lagoon detention) critical limit set — • on-site auditing of controls (night-time irrigation critical limit based • signage, backflow prevention, etc) on approved times, visual inspection of on-site storage for algal growth. • Environmental performance Monitoring requirements in relation to the environment included: TDS of irrigation water in storage dam • health of fairway grass • monthly inspections of irrigation system during summer. •
Table A1.3 (continued) Framework element and components Element 3: Preventive measures for recycled water management Activity Components: Preventive measures and multiple barriers Human health Preventive measures to manage risks to human health were as follows: • Lagoon detention time reduced concentrations of pathogens by several logs. Median number of E. coli are expected to be maintained at <1000/100 mL. • Golf course storage protected from human and livestock waste. • Backflow prevention and cross-connection control at all irrigation sites. • Pipework (colour coded) and signage. • Education program for golf course employees. • Exposure reduced by: – only allowing irrigation between midnight and 5 am – buffer zones of 30 m between edge of spray irrigated area and nearest private land – outside row of sprinklers 180° inward throwing – no irrigation when windy. Environmental performance Preventive measures to manage risks to the environment were as follows: • Nutrient content of recycled water to be considered when determining fertiliser requirements. Greens of fine turf should not be irrigated with recycled water as excessive nutrients would be applied. • Irrigation scheduling devices and controls to monitor and/or control water application rates, soil moisture, and water movement through the soil. Use a leaching fraction to maintain acceptable soil salinity levels. Critical control points • Lagoon storage (minimum 60 days) • Night-time irrigation Element 4: Operational procedures and process control Components: Operational procedures • Operational procedures identified and documented for the treatment plant and the irrigation system. Operational monitoring Human health Monitoring requirements in relation to human health included: • standard wastewater plant requirements, such as soluble biochemical oxygen demand (BOD), etc • flow rates (lagoon detention) — critical limit set • on-site auditing of controls (night-time irrigation critical limit based on approved times, signage, backflow prevention, etc) • visual inspection of on-site storage for algal growth. Environmental performance Monitoring requirements in relation to the environment included: • TDS of irrigation water in storage dam • health of fairway grass • monthly inspections of irrigation system during summer.