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The Mitigating Effects of Emergency Response 35 Response Time This Guide uses the basic premise that the longer it takes for emergency responders to arrive on scene, the less effective they will be in mitigating consequences. In Step 5, you determined the performance objectives for your jurisdiction, which included desired emergency response times. In this step, you will determine how well your current response capability can meet that desired response time for the scenarios you identified. The response time factor (RTF) considers each of the major outcomes: assess, manage, rescue, and control. The times associated with each of these outcomes consider the time required to: Assess the nature of the hazmat incident; Transport the incident commander to the scene so he or she can start managing the scene; Rescue the number of individuals specified by the tier level; and Transport the specialized hazmat emergency response team to the scene so they can take over incident management. This Guide focuses on the time it takes to achieve each of the four response outcomes. Response Time Objectives Response time objectives are included in the performance objectives tables (Tables 4 through 8) in Chapter 3 and are repeated in Table 18. Refer to the table associated with your Jurisdiction Class in Chapter 3 for more information on the elements considered as part of the four target outcomes. Remember that when you combine resources from different locations into a team, you need to consider the time for all resources to arrive at an incident to consider that "team" on site and fully functional. Step 17 Determine the typical response times by incident scenario for each of the outcomes listed in Table 18: assess, manage, rescue, and control. If you use the assessment tool, enter the response time for the scenario and its outcome. Response Time Factor If emergency responders in the appropriate capability tier for each scenario can be on scene within the desired response time, then the value for RTF will be 1. Where longer response times are expected, higher values are used. This has a multiplying effect on the estimated consequence. Table 19 shows the possible RTFs. Based on the RTF value assigned, the impact on consequences can increase by as much as five times, depending on the difference between the desired and actual response times. Table 18. Response time objectives (in minutes) based on Jurisdiction Class. Target Response Time by Jurisdiction Class (minutes) Outcome Class Five Class Four Class Three Class Two Class One Assess 5 5 5 5 5 Manage 60 45 30 30 30 Rescue 60 10 10 10 10 Control 90 60 45 30 30