Industry Shared Practices

It is the responsibility of each operator to conduct their operations safely and in accordance with the circumstances of the particular operation 2 Risk Appraisal and Risk Mitigation The key planning activities that guide the design and implementation of hydraulic fracturing operations where induced seismicity is a potential should be influenced by a comprehensive risk assessment and a correspondi. [...] The risk associated with a hazard is understood to be the product of the likelihood of the hazard to occur and its consequence as presented in Figure 1. [...] Figure 3: Observed horizontal-component ground motions (symbols) for induced events of M4.0 to 4.5 (converted to B/C site conditions) in Oklahoma and Alberta4 2.1.6 Final Risk Assessment The overall risk associated with induced seismicity due to hydraulic fracturing operations is the result of a reasonable documented aggregate of all the risks, weighted appropriately for the area of operations. [...] The responsibility of how to assess and aggregate the risk from each of these should be passed on to operators. [...] The review can align understanding of the risks and response protocols for the well or group of wells, and should: • Review and document risk factors and their characteristics for the upcoming area of operations • Finalize and document the prioritized mitigation response plan for consideration if seismicity events or trends occur • Use the results of the risk review to finalize seismicity monitori.