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City of Santa Ana, CA! J DY <br />Number of Breaks per Main Segment <br />Some pipe segments have had multiple (up to five) recorded breaks since 1990. City staff indicates that <br />it is not uncommon to repair one main break and then have to return a week later for a repair a short <br />distance away. This observation is important — either repairs are not being done well or the problems <br />(operational; high pressure, water hammer, etc.) are transferring to the immediate proximity of a break <br />as it is fixed. This would require a review of the water hammer and /or pressures (beyond the scope of <br />this study). Another possibility is that the repair efforts could have caused additional strain on adjacent <br />pipe causing it to fail; or that the leak was actually in multiple locations along the same pipe segment. <br />Figure B - 21 provides a map showing water mains color coded by the number of breaks per main <br />segment. <br />[SPACE INTENTIONALLY LEFT BLANK] <br />BLACK & VEATCH I Appendix B: Water CIP Prioritization P --; —;s, <br />65B -115 <br />103 <br />