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mainline when ) (4) assuming the highest population density. For slow speed train <br />movements, the Zone 3 risk level is never reached in the analysis, and for high speed train <br />movements, the Zone 2 risk level is never reached. <br />Summary of the risk metrics for mainline LNG ISO car train movements. <br />Risk Metric <br />Train Speed < 25 iph <br />Train Speed 25 — 60 mph <br />® <br />(4) <br />(4) <br />SR Integral (total risk, yr-') <br />Maximum IR (yr-') <br />Maximum Distance to Zone 1 - 1 x 1 0-�'IR (ft) <br />■ <br />Maximum Distance to Zone 2 - 1x10 IR (ft) <br />(4) <br />lVi <br />■ <br />Maximum Distance to Zone 3 - 3x10 IR (ft) <br />(4) <br />■ <br />(4) <br />E.2.3 Intermodal Facility Risk <br />The overall risk of LNG ISO lifting and train movement within the intermodal facilities and <br />train yards is influenced by the contribution from lifting risk. The analysis was conducted by <br />assuming that all lifts occurred at a single point on the intermodal ramp track, which had the <br />effect of maximizing the Individual Risk for the facility. When the lifting is distributed along the <br />intermodal track, the Individual Risk profile will decrease for the facility. The Individual Risk <br />posed by train movement within the facilities yielded an Individual Risk profile that was a <br />combination of yard track movement overlapped with lifting risk where applicable. For the <br />facilities, the Individual Risk thresholds typically crossed the property boundaries when lifting <br />was assumed to occur at a point, but only the Zone 3 risk threshold appeared to overlap offsite <br />populations when lifting was modeled along the intermodal ramp track. <br />A surnm ry of the risk results for the facilities is provided in the table below. For the facilities, the <br />actual surrounding population densities were applied, and these results represent train <br />configuration C-1. Since Individual Risk is dominated by lifting, which is independent of train <br />configuration, other train configurations are not included. Note that the distances are from the <br />track or point of lifting—not from the property boundary. <br />1308194 001 - 5691 XX <br />