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104 <br />SEWER RATE STUDY I City of Santa Ana, CA <br />Figure B- 30: Sewer System BRE Heat Map Graphic by Miles of Main <br />Probability of Failure <br />1 2 3 4 5 6 7 8 9 10 <br />10 2.5 <br />4! 9 11 7.3 1.0 <br />i <br />8 <br />- 2.4 10.5 <br />0 <br />LL 7 !�,2.41 .3 1.1 4.1 <br />w <br />O 6 <br />y 2.9 2.9 12.5 !2.41 2.6 03 0.4 <br />d 5 0.5 I 3.2 0.7 2.7 0.5 6.1 0.8 <br />4 0.4 4.9 1.1 2.1 1.1 4.5 3 0.8 8.3 1.5 L7 1.9 2.8 0.4 0.3 <br />O - -- <br />U 2 Z7 28.4 4.6 4.5 ` 5.0 7.6 3.5 1.3 0.3 1.0 <br />1 10.2 8.9 26.2 19.0 � 19.1 31.9 11.0 6.2 L2 2.3 <br />Total Miles: 446.3 <br />Let's look specifically at the 1 mile of pipe that scored near the upper right corner. These pipe segments <br />have a PoF of greater than 9 and less than or equal to 10. They also have a CoF of greater than 8 and less <br />than or equal to 9. In reviewing the data tables supporting this graph, this cell includes a total of 1 mile <br />of 36 inch VCP pipe segments installed in 1938. <br />65B -263 <br />NOVEMBER 2014 <br />