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101-1 <br />SEWER RATE STUDY I City of Santa Ana, CA <br />60 $5.63 $722.34 <br />78 $5.81 $857.71 <br />84 $6.00 $916.09 <br />Figure C 1 shows the distribution of BRE scores (across the bottom) against the total estimated <br />replacement costs. The cumulative replacement cost line is also provided. It must be emphasized that <br />BRE scores calculated in this study were based on relative values and do not represent an absolute level <br />of risk. As such, it is not possible to quantitatively determine an acceptable BRE target. As the City <br />collects additional condition and failure information, further investigation is recommended to better <br />characterize the risk relationship and define appropriate targets. <br />Figure C -1: BRE Scores and Costs for Sewer Collections System <br />A variation of the previous heat map graphic is provided in Figure C 2. This version is based on cost <br />rather than pipe length. <br />65B -267 <br />NOVEMBER 2014 <br />