Table A1.1 (continued) Framework element and components Activity Element 4: Operational procedures and process control for all processes and activities associated with the system Components: Operational procedures documented procedures must be available to all operations • personnel and available for inspection at any time. Environmental performance Human health In relation to the environment, irrigation procedures were established In relation to human to minimise salinity impacts, maintain nutritional levels, and minimise health: leaching and impacts on groundwater quality and quantity (all users of operational • recycled water are trained in best management practices for procedures irrigation). were identified Human health Operational monitoring Monitoring requirements in relation to human health include: standard wastewater plant requirements, such as biochemical • oxygen demand (BOD), suspended solids, etc inputs into the storage lagoons Cryptosporidium • flow rates (lagoon detention) critical limit set — • turbidity of filtered water (continuous) critical limit set — • disinfection (continuous) critical limit set — • on-site auditing of controls (signage, backflow prevention, etc). • Environmental performance Monitoring requirements in relation to the environment include: recycled water electrical conductivity (continuous) — critical limit • set pressure sensors in the reticulation system to identify pipe bursts • and automatic cessation of supply if detected visual inspection to ensure that best management practice for • irrigation is followed and leakage from the irrigation and reticulation system is minimised moisture sensors or other monitoring tools are used to maximise • irrigation efficiency irrigation monitoring is used to minimise runoff. •
Table A1.1 (continued) Framework element and components Element 4: Operational procedures and process control Activity Components: Operational procedures Human health In relation to human health: • operational procedures were identified for all processes and activities associated with the system • documented procedures must be available to all operations personnel and available for inspection at any time. Environmental performance In relation to the environment, irrigation procedures were established to minimise salinity impacts, maintain nutritional levels, and minimise leaching and impacts on groundwater quality and quantity (all users of recycled water are trained in best management practices for irrigation). Operational monitoring Human health Monitoring requirements in relation to human health include: • standard wastewater plant requirements, such as biochemical oxygen demand (BOD), suspended solids, etc • Cryptosporidium inputs into the storage lagoons • flow rates (lagoon detention) — critical limit set • turbidity of filtered water (continuous) — critical limit set • disinfection (continuous) — critical limit set • on-site auditing of controls (signage, backflow prevention, etc). Environmental performance Monitoring requirements in relation to the environment include: • recycled water electrical conductivity (continuous) — critical limit set • pressure sensors in the reticulation system to identify pipe bursts and automatic cessation of supply if detected • visual inspection to ensure that best management practice for irrigation is followed and leakage from the irrigation and reticulation system is minimised • moisture sensors or other monitoring tools are used to maximise irrigation efficiency • irrigation monitoring is used to minimise runoff.
water-recycling-guidelines-full-21.docx