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   <br />       <br />     <br />  Percentage of total Number of SSOs by Spill Cause    <br />   <br />Operational: Debris from Construction, Debris from Lateral, Debris-General, Debris-Rags, Fats and Oils and Grease, Root Intrusion, Debris-Wipes/Non-Disposable <br />Condition: Flow Exceeded Capacity (Separate CS Only), Natural Disaster, Rainfall Exceeded Design, II (Separate CS Only) <br />Structural: Air Relief Valve (ARV)/Blow-Off Valve (BOV) Failure , Pipe Structural Problem/Failure, Pipe Structural Problem/Failure - Installation, Pump Station Failure- <br />Controls, Pump Station Failure-Mechanical, Pump Station Failure-Power, Siphon Failure <br />Other: Construction Diversion Failure, CS Maintenance Failure, Damage by Others Not Related to CS Construction/Maintenance (Specify Below), Inappropriate <br />Discharge to CS, Operator Error, Other (specify below), Surcharged Pipe (Combined CS Only), Vandalism <br />   <br />     <br />Redwood City CS <br />   <br />1/5/25, 6:28 AM California Integrated Water Quality System (CIWQS 100.0) - Build Number: mainTrunk.mm.dd.yyyy.1 <br />https://ciwqs.waterboards.ca.gov/ciwqs/readOnly/publicReportSSOPerformance.jsp?wdid=2SSO10168&fromPerformance=true&category=&startDate=&endDate=5/9 <br />ATTY/RESO.0077/CC RESO SEWER SYSTEM MANAGEMENT PLAN - EXHIBIT A <br />REV: 07-14-25 LF <br /> <br />Page 262 of 317