5. This is the risk that there will be additional disruption to the service over and above that which the contractor estimated when planning the work e.g. as a result of additional testing. The cost of this will fall to the SPV and the SPV will include a time and cost contingency in their price for this risk. Therefore, whether the change is a Replacement Change or an Addition Change, the cost for this risk is likely to be included in the SPV cost element of the price and should not be considered in calculating the SPV profit level.