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City of Santa Ana, CAI SEVIFUR RATE STUDY <br />Business Risk Exposure (BRE) <br />The overall Business Risk Exposure (BRE) was then calculated for each asset. The BRE score is a product <br />of the PoF times the CoF scores. This score is an informative indicator of facilities that will likely require <br />higher levels of attention; in the form of proactive replacement and /or targeted inspection monitoring. <br />It is typically based on a 1 to 100 scale metric. Figure B 29provides a distribution of Sewer Pipeline BRE <br />Scores. <br />Figure B- 29: Distribution of Sewer Pipeline BRE Scores <br />Figure B 30 provides a "heat map' graph showing the resulting distribution of PoF vs. CoF scores by <br />miles of main. Combined, these represent the BRE score. Higher probability of failure assets are plotted <br />near the right. Higher consequences of failure assets are plotted near to the top. Figure B 31 provides a <br />map of sewer mains color coded by total BRE score. A partial table of sewer main pipeline segments <br />ranked by BRE score is included in the Replacement Prioritization section. <br />[INTENTIONALLY LEFT BLANK] <br />BLACK & VEATCH I Appendix B; Sewer CIP Prioritization Process <br />65B -262 <br />