65B - PROPOSED WATER AND SEWER RATE ADJ

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City of Santa Ana, CA I WATER RATE STUDY R &R Strategy Groups and CIP Budgeting The risk prioritization table just presented identifies pipe segments having the highest BRE score. Since this score is based on the product of PoF times CoF factors, it gives equal consideration for both factors. Typically, different R &R strategies are applied to address these two considerations. Based on the BRE heat map graphic results, the ranked assets were then grouped into logical R &R strategies. Figure D - 5 shows the same BRE heat map graphic as before, but color coded by strategy group. Figure D - 6 shows a map of the City -owned mains color -coded by Strategy Group (A -Z). Table D - 2 defines each of these groupings and provides additional summarizations and recommendations. Figure D - 5: BRE Heat Map Graphic by Cost and R &R Strategy Groups for City -owned Mains 30 L 9 FO 8 LL O 7 y 6 U C 5 3 4 Cr OJ 3 N = 2 O U 1 Probability of Failure 1 2 3 4 5 6 7 8 9 10 Group .3 $2. ° $6.1 $0°{2 $00' $0.0 $0.0 $0.0 $01 $0.0 $0.6 B $0.4 $0.1 $0.0 $0.0 $1.9 $U $0.7 C $0.3 $2.3 $6.1 $6.4 $0.1 $0.0 $0.0 $0.0 $0.0 $3.3 D $1.1 $4.6 $16.4 $9.2 $0.2 a 0 $0.9 $0.0 $0.5 E $4.3 $3.0 $2.1 $16.9 $2.5 $14.8 $10.9 $3.4 $0.0 $0.8 F $20.9 $17.5 $11.7 $55.7 $6.7 $44.8 $21.3 $10.9 $0.9 $5.4 $4.1 $1.9 $3.9 $22.0 $1.2 $4.8 $3.1 $4.2 $0.9 $0.9 l $38.7 $25.1 $15.3 $91.4 $12.8 $35.5 $18.9 $11.5 $3.4 $4.9 y $1.7 $6.0 1 $9.2 $75.2 $24.5 $54.3 $47.4 $26.8 $4.0 $3.0 2 Millions of Dollars Total Cost: $888.8 BLACK & VEATCH I Appendix R Cary -Owned Malns Analvs�, 65B -155