When building a Safety Management System or Environmental Management System one of the first steps in the planning process is assessing risk.
One of the most important things to realise early on is that Environmental Risk and Safety Risk are two very different things and therefore require a different criteria for assessment. The standard safety risk assessment matrix like the one below (taken from www.dpmc.gov.au)
Is fine for assessing safety risk but I would not recommend using this model for assessing your environmental risk. When I perform an aspects and impacts assessment there are a number of criteria that I use that have no correlation with safety risk.
My recommendation for an Integrated Management System is to not fully integrate your risk management processes. I have yet to see a system that works for both safety and environmental risk.
I am always open to new ideas though so if anyone has an example of a good system that works for both please comment below.