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L udic ro us Mo de : F ro m Ca lib ra te d Mo de l to 30% De sig - PowerPoint PPT Presentation

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L udic ro us Mo de : F ro m Ca lib ra te d Mo de l to 30% De sig n in a Co mpre sse d Co nse nt De c re e Sc he dule pre se nte d b y Ste ve n Rho de s, PE Pr o jec t B ac kgr o und Pr o jec t Appr o ac h Mo deling Offline Sto r

  1. L udic ro us Mo de : F ro m Ca lib ra te d Mo de l to 30% De sig n in a Co mpre sse d Co nse nt De c re e Sc he dule pre se nte d b y Ste ve n Rho de s, PE

  2. Pr o jec t B ac kgr o und Pr o jec t Appr o ac h Mo deling Offline Sto r age F ac ilities Pre se nta tio n Ove rvie w

  3. SAWS entered into Consent Decree with USEPA 2007-2013 Negotiations July 23, 2013 Lodged October 15, 2013 Entered 10-12 Year Duration 8 Major Components Capacity, Management, Operation & Maintenance (CMOM) Early Action Program Condition Assessment and Remedial Measures Capacity Assessment and Remedial Measures Lift Stations Force Mains Water Quality Program Central Basin Team: Freese and Nichols (FNI) Reporting and CH2M (now Jacobs) Pro je c t Ba c kg ro und

  4. Ce ntra l Ba sin Serves residential and • commercial portions of San Antonio, including downtown Main stem sewer conveys flow • along creeks and drainage ways • Parallel sewers in many points • Sewer in waterway at various points Sewers come together at Rilling • Road location (former WWTP) and convey flow in 90-inch sewer to Dos Rios Water Reclamation Center (WRC) Pro je c t Ba c kg ro und

  5. Ce ntra l Ba sin Hydra ulic Mo de l • SAWS Master Planning built and calibrated Approximately 80 MGD Reduction in Peak Flow basin model with 15 MG Rilling Rd Offline Storage Facility – Infoworks ICM v6.5 – 5-year, 6-hour assessment storm • SAWS provided Base Model which included: – 30% I/I reduction – Early Action Projects Pro je c t Ba c kg ro und

  6. Pr o jec t B ac kgr o und Pr o jec t Appr o ac h Mo deling Offline Sto r age F ac ilities Pre se nta tio n Ove rvie w

  7. • SAWS/HDR identified 28 Capacity Constraint Areas forwarded to BPC Team • 14 CCAs Along “Main Stem” of the Basin • 14 CCAs In Upper Reaches of Basin Pro je c t Appro a c h

  8. Ce ntra l BPC Pla n - Me tho do lo g y • Develop and finalize alternatives 10% • Assessment & design Design • Recommendation to move forward to the 30% • Perform field verifications/evaluations 30% • Develop cost data Design • Allows rapid progress in final Design & Construction Pro je c t Appro a c h

  9. 9 Submit Main Stem Submit Draft TM Main Stem Final TM Submit Basin Start 10% Sensitivity Present Main Design Draft TM Stem Alternatives 10% Design Alternative Analysis August 2016 – May 2017 Submit 14 Final TMs Submit 14 & Start 30% Design Submit Basin Draft TMs Sensitivity Final TM Pro je c t Appro a c h

  10. How are we going to get this done? SOLUTION • Assign the 14 CCAs and Main Stem between 4 Design Teams • 1 Hydraulic Modeler on each Team • All Teams Working In Parallel Pro je c t Appro a c h

  11. K e ys to Suc c e ss Maintain Quality • QC Plan Through Life of Project • Model loaded onto Allow Multiple Modelers in a Single DB SQL Server • Custom VMWare Max out Hardware Specs to Minimize Remote Desktops Model Run Time • Model DB Minimize Confusion and Organization Delay Pro je c t Appro a c h

  12. • 14 Non Main Stem CCAs hydraulically separate from each other and Main Stem • Separate network for each Non Main Stem CCA • Single network for Main Stem CCAs Pro je c t Appro a c h

  13. Large Diameter Small Diameter Pro je c t Appro a c h

  14. I nfo Ma ste r Ove rvie w Pro je c t Appro a c h

  15. Asset History Count of Depth of Pipeburst/CIPP E Pipe Diameter Defects Pipe /Open-Cut yes/no LD/SD > 1/100 lf >3’ but < 20’ PACP Codes E-Pipe 8” in Diameter 6’ Deep Pro je c t Appro a c h

  16. Pr o jec t B ac kgr o und Pr o jec t Appr o ac h Mo deling Offline Sto r age F ac ilities Pre se nta tio n Ove rvie w

  17. • 90” Line to Dos Rios WRC has insufficient capacity • Surcharges Main Stem upstream • 7.2 miles of Parallel 54” PLUS Dos Rios Improvements • Alternative Solution Required Offline Sto ra g e F a c ilitie s

  18. Rilling Road WWTP (1930) All Sewers Lead to Rilling Road Rilling Road WWTP (2017) Offline Sto ra g e F a c ilitie s

  19. Diversion Structure at Existing 90” 5 MG Storage 72” Diversion basins Line Pump Station 36” Cell Basin Fill Drain Line Weirs 42” Force Main Offline Sto ra g e F a c ilitie s

  20. Basin Fill Basin Fill Weirs Weirs Dummy Basin Drain Outfall Sluice Gate Dummy Gate 36” Cell Pump Drain Line Station 42” Force Main Offline Sto ra g e F a c ilitie s

  21. • Ran into initialization issues – Had drain gates closed – Basins would fill during initialization • Developed simple RTC – Drain gates open during initializations Set initial gate • – Flow drains to dummy setting to open outfall Define default rule • – Close gates when to close gate simulation starts Offline Sto ra g e F a c ilitie s

  22. Continuous 10 year Date Duration Peak Volume (hr) Intensity Stored Simulation to Estimate (in/hr) (MG) Frequency of Storage 5/28/2007 5 1.25 2.4 8/16/2007 12 1.25 7.2 Activation 9/8/2010 11/2 1.45/1.90 9.4 5/15/2012 6/4 0.80/1.25 3.7 5/25/2013 6/2 4.0/1.4 15+ 9/25/2015 7 1.75 15 Design 6 5.9 11 Storm Offline Sto ra g e F a c ilitie s

  23. • Custom VMWare Desktop w/20 CPU cores • 3 yr Sim took approximately 1 day • Total of 1 TB of storage space Offline Sto ra g e F a c ilitie s

  24. Que stio ns & Disc ussio n c o nta c t info rma tio n . | sdr@ fre e se .c o m | 210 . 298 . 3815 Ste ve n Rho de s, P.E

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