(4)The technical screening criteria for determining whether an economic activity contributes substantially to climate change mitigation or climate change adaptation should ensure that the economic activity makes a positive impact on the climate objective or reduces negative impact on the climate objective. Those technical screening criteria should therefore refer to thresholds or performance levels that the economic activity should achieve in order to qualify as contributing substantially to one of those climate objectives. The technical screening criteria for ‘do no significant harm’ should ensure that the economic activity has no significant negative environmental impact. Consequently, those technical screening criteria should specify the minimum requirements that the economic activity should meet in order to qualify as environmentally sustainable.