Appendix 1 – Operations and Maintenance – Stormwater/Wastewater Risk Profile 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 Laterals Sewage Infiltration Inflow Engineering codes of Pipe upgrades for (including Flood) - practice (design Picton/Blenheim - 3 accumulative through features). - 5 years (2016). network Maintenance and All 3 A E renewal programme. 3 B H N Infiltration monitoring and repair. Backflow preventers. Network Model. Laterals Man Made Surcharge/ Overflow Service level Pipe upgrades for Hazard requirements. Picton - 3 - 5 years Design capacity. (2016). All 3 A E Infiltration programme. 2 B H N Managed sewage Network Model. overflows SRo June 2015. Page 71 5 – 1secneuqesnoC doohilekiL E - A ksiR fo leveL gnitsixe eht era tahW slortnoc5 – 1 secneuqesnoCdoohilekiLE-AksiRfoleveLslortnoc gnitsixe eht erA etauqedastnemmoC nalP noitcA