Orinda Water Treatment Plant Disinfection Improvements Project Update. Planning Committee February 13, 2018

Transcription

1 Orinda Water Treatment Plant Disinfection Improvements Project Update Planning Committee February 13, 2018

2 Agenda Background Project objectives and scope Need for specialized services Collaborative consultant-led design Next steps 2

3 Background: Orinda WTP Disinfection Improvements No dedicated post-filter chlorine contact Disinfection occurs in Aqueducts; forms higher DBPs Orinda WTP Built in MGD Very little margin for reliable disinfection (CT ratio) Project introduced at 10/10/17 Planning Committee meeting Alternatives discussed at 12/12/17 Planning Committee meeting 3

4 Project Objectives Reduce DBPs Bring Orinda WTP to the same disinfection standards as our other inline WTPs Provide a robust, reliable multi-barrier disinfection process Implement disinfection improvements that are compatible with long-term pre-treatment plans for Orinda WTP 4

5 Specialized Services: Deep Excavation and Shoring (L) Secant piles with interlocking concrete columns (more expensive) (R) Interlocking steel sheet piles with bracing (less expensive) 5

6 Specialized Services: UV Design and Computational Fluid Dynamics Computational fluid dynamic (CFD) modeling of complex hydraulics 6

7 Contracting Out Specialized Services UV system design, validation and DDW permitting expertise Closely coupled systems (UV/CCB) need to be designed in tandem Large-scale design would delay many other important projects 7

8 Project Scope: Consultant Services Carollo Engineers Design new UV/chlorine contact basin facilities and supporting infrastructure Los Altos Pumping Plant #2 electrical upgrades Utility relocation within limits of new facilities CEQA, permitting, startup and commissioning CDM Design, value engineering, and constructability review 8

9 Project Scope: District Forces Utility relocation study and design Chemical system design Project management Construction management Document review UV pilot testing Xylem/Wedeco Spektron 250e pilot UV reactor at OWTP 9

10 Next Steps Consider consultant agreements Carollo: Design services CDM: Design review, VE, constructability Complete District investigations Surveying Utility locations Geotechnical investigations Begin detailed design 10

11 Questions? 11

12 Water Distribution System Software Planning Committee February 13, 2018

13 Overview Background Current challenges in the field Field staff needs Software evaluation Benefits

14 Background 4,200 miles of pipeline 90,000 valves 1,415 distribution maps

15 Current Challenges Outdated paper maps User-friendly mobile application Central management tool to track system status Outage planning Difficult to locate valves Valve testing software

16 Field Staff Needs Real-time access to Maps, work orders, and system data Tools to support Outage planning Valve testing Data collection

17 Software Evaluation Evaluated three software products in 2014 Narrowed to two vendors InfraMap selected Issues with InfraMap Sedaru matured and expanded its capabilities

18 Benefits Up to date distribution maps Reduce customer impacts (shutdown planning) Reduce damage and water loss Improve response time Improve field data collection Easy to identify and locate valves Valve testing and scheduling Generate work order from the exact asset

19 Sedaru Interactive distribution system maps

20 Sedaru Automated shutdown planning

21 Sedaru Dashboard

22 Sedaru Link field staff, Dispatch, and customers

23 Key Features Integrated with work order system Intelligent, real-time, leak, and break response Real-time information for better customer response Integrated with valve testing machine Common tool for all staff

24 Users of Sedaru

25 Next Steps Finalize IT requirements and contract Award in February or March 2018

26 Questions and Demonstration