Table 5.3b System risks

• Unable to handle normal circumstances (for your area) of both domestic sewage and food-processing tradewaste
• Abnormal – major sudden toxic load
• Odour and noise
• Plant breakdown

• Treatment system shut down – have to find short-term alternatives
• Low risk in normal circumstances
• High risk in future – area growing and new businesses coming in

• Set standards for normal treatment performance

Either:

• set standards for tradewaste entering the system – restrict those system cannot deal with

or:

• restrict business growth

or:

• identify likely trade wastes in future and design system to fit.
• have a back-up plan in place if system fails.
• resource consent and discharge permit provisions