SAWS Sanitary Sewer Overflow Reduction Program Jeff Haby, P.E. Director Sewer System Improvements SA Military Engineers Meeting Agenda SAWS Overview Consent Decree CD Compliance Programs Program Transition Alternatives Analysis Remedial Measures Execution Program Cost SSO Reduction Trends Page 2 1
San Antonio Water System Overview 5,200 miles of sewer main 100,000 manholes 300 siphons 80 miles of force main 156 lift stations 3 waste water recycling plants Page 3 CD Process Section 308 Letter Draft CD Negotiations Monitor Implement Final CD Page 4 2
CD Timeline: 2007 2013 Negotiations July 23, 2013 Lodged October 15, 2013 Entered 10 12 Year Duration Page 5 CD Requirements: 8 Major Components: 1. CMOM 2. Early Action Program 3. Condition Assessment & Remedial Measures 4. Capacity Assessment & Remedial Measures 5. Lift Stations 6. Force Mains 7. Water Quality Program 8. Reporting Page 6 3
CMOM Program Page 7 Develop Contracts for Support Page 8 4
Smart Covers SSOs Saved by Smart Covers 600 500 400 300 200 100 0 2009 2010 2011 2012 2013 2014 2015 YTD Page 9 CMOM: Cleaning Schedule Clean the Right Pipe at the Right Time Asset based Cleaning Optimization Program Pipes are cleaned based on the maintenance window Page 10 5
CMOM: Cleaning What we find: Page 11 Flushables Page 12 6
CMOM: CCTV Inspection Page 13 CMOM: Fats, Oils & Grease Program Cleaning FOG Enforcement Education Page 14 7
Early Action Program Phase I & II Phase I: Defects identified (prior to January 1, 2013) Phase II: Defected identified 18 months after January 1, 2015 Page 15 Condition Assessment: A E Rating Page 16 8
Condition Assessment Challenges Page 17 Capacity Assessment: Wet Weather Investigations & Field Verifications Investigate Wet Weather SSOs Identify partial blockages Addressed through maintenance/repair Perform field verification Flow meters Smart Covers Page 18 9
Capacity Assessment Results Hydraulic Grade Line Not Near Ground Page 19 Capacity Assessment Results Modeled SSO and Actual SSO Page 20 10
Maintenance, Monitor or Alternative Analysis Page 21 Phases Program Initiation Capacity & condition i assessment Current Transition Alternatives analysis & planning Future Transition CIP implementation - design and construction Today Remedial Measures Plans to EPA Page 22 11
Condition Assessment to Alternative Analysis Data Collection Condition Assessment Next Step: Alternatives Analysis 82% CCTV 80% Assessed Page 23 Capacity Assessment & Alternatives Analysis Data Collection Capacity Assessment Next Step: Alternatives Analysis Page 24 12
Referral for Alternatives Analysis Block Map = 91.8 Acres Page 25 Remedial Measures: Page 26 13
Performance Measurement Identifies Issues Early for Corrective Actions Page 27 Schedule Milestone Review Process Managing without Micromanaging Detailed schedules maintained by engineers and contractors Program Management team monitors major milestones Page 28 14
Reporting Page 29 Program Cost Projected Over 10 Yrs Operating Capital Total Total Investment After the Consent Decree $251.7 M $840.4 M $1.092 B Page 30 15
SSO Trends 2009 2014 High, Low, and Average 90 80 70 60 SSOs 50 40 30 20 10 Low 2009 2014 High 2009 2014 Average 2009 2014 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Page 31 SSO Trends 2015 vs 2009 2014 90 80 70 SSOs 60 50 40 30 Low 2009-2014 High 2009-2014 Average 2009-2014 2015 20 10 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Page 32 16
SSO Reduction Trends 2010 2015 Cause 300 250 SSO Cause 200 150 100 50 STRUCTURAL GREASE/D&R LIFT STATION RAIN EVENT OTHER VANDALISM CONTRACTOR 0 2010 2011 2012 2013 2014 2015 Page 33 Discussion & Questions Page 34 17