Record No. 14144207 WITHOUT CONTROLS WITH EXISTING CONTROLS TREATMENT The risk: describe what can happen and how it can happen Op Maintenance - Wastewater Security/Storage Risk?? Operation Category Risk Area Sewers Sewage Surcharge/ Monitoring. Pipe upgrades for Overflow Electric alarms. Picton/Blenheim - 3 Increased cleaning of - 5 years (2016). problem areas. Managed sewage All 3 B H Control discharge 3 C H Y overflows points. - SRo June 2015. Design features. Inbuilt over capacity. Network Model. Sewers Sewage Exfiltration Engineering codes of Accept current level practice of control All 4 B E (design features). 3 B H Y Monitoring, detection and rehabilitation programme. Sewers Sewage Hydrogen Sulphide Design features. Accept current level All 3 A E Monitoring, detection 3 C H Y of control and rehabilitation programme. Sewers Natural Slip/Flood Scour Picton, Insurance/LAPP. Accept current level Hazard Havelock, 3 C H Monitoring. 3 C H Y of control Seddon Spares inventory. Page 77 5 – 1secneuqesnoC doohilekiL E - A ksiR fo leveL gnitsixe eht era tahW slortnoc5 – 1 secneuqesnoCdoohilekiLE-AksiRfoleveLslortnoc gnitsixe eht erA etauqedastnemmoC nalP noitcA