2016 Webinar Sponsors

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1 Copyright 2016 American Water Works Association 2016 Webinar Sponsors 2 Please consider the environment before printing. 1

2 Webinar Moderator No Image Available Barbara Martin Senior Manager of Partnership Programs American Water Works Association With over 15 years of experience in water and wastewater, Barbara Martin is currently Senior Manager of Partnership Programs at the American Water Works Association. She has a BA in chemistry from Boston University and an MS in geochemistry from Colorado School of Mines, where her thesis research focused on the effect of constructed wetlands on disinfection byproducts and their formation. Barbara has an MBA from Colorado State University and is a licensed drinking water operator in the State of Colorado. 3 Enhance Your Webinar Experience Close Programs Instant messengers Other programs not in use GoToWebinar Support 4 Please consider the environment before printing. 2

3 Webinar Survey Immediately upon closing the webinar Survey window opens Thank you 5 Products or Services The mention of specific products or services in this webinar does not represent AWWA endorsement AWWA does not endorse or approve products or services 6 Please consider the environment before printing. 3

4 Panel of Experts Kevin Linder Water Treatment Supervisor Denver Water Dr. Todd Brewer Manager Water Quality Labs City Utilities of Springfield Dr. Yan Zhang Civil Engineer Long Beach Water Department 7 Agenda I. Data-Driven Decision Making in Distribution Systems Kevin Linder II. Applying the Partnership for Safe Water Approach to Improve Distribution System Disinfectant Residual Dr. Todd Brewer III. Nitrification Prevention and Control An Optimization Case Study by Long Beach Water Department Dr. Yan Zhang 8 Please consider the environment before printing. 4

5 Partnership for Safe Water Drinking water optimization and recognition program established in 1995 to address Cryptosporidium concerns Partner organizations: 9 Partnership for Safe Water Partnership for Safe Water mission: To improve the quality of drinking water delivered to customers of community water systems by optimizing operations. Two programs Treatment plant optimization (1995) Distribution system optimization (2011) 10 Please consider the environment before printing. 5

6 Key Distribution System Monitoring Parameters Disinfectant residual Water quality integrity Main break frequency Physical integrity Pressure management Hydraulic integrity Identified in WRF 4109 Criteria for Optimized Distribution Systems 11 Distribution System Performance Improvement Variables Disinfectant Residual Cross-Connection Control Customer Complaints DBP Control Energy Management External Corrosion Control Flushing Hydrant and Valve Maintenance Internal Corrosion Control Main Breaks Nitrification Pipe Rehabilitation and Replacement Inorganic Accumulation Control Pressure Management Security and Online Monitoring Storage Tank O&M Water Age Management Water Loss Control Water Sampling and Response 12 Please consider the environment before printing. 6

7 Partnership Principles Beyond regulations Goals set beyond regulations to provide an additional measure of public health protection Avoiding Complacency Proactive measures to remain prepared and resilient Data-driven Actions and decisions based on data and information 13 Ask the Experts Kevin Linder Dr. Todd Brewer Dr. Yan Zhang Enter your question into the question pane at the lower right hand side of the screen. Please include your name and specify to whom you are addressing the question. 14 Please consider the environment before printing. 7

8 Data-Driven Decision Making in Distribution Systems Kevin Linder Water Treatment Supervisor Aurora Water 15 Data-Driven Decision Making 16 Please consider the environment before printing. 8

9 Agenda How Data is Used Data Generation Data Integrity Representative Data Data Accuracy Data Recording and Accessibility 17 Learning Objectives Why turning data into information is important How to Ensure data is: Accurate Representative Accessible 18 Please consider the environment before printing. 9

10 Rationale Turning Data into Information is important to: Make system decisions to protect water quality Provide operators with tools to be successful Protect Public Health 19 Data-Driven Decision Making Information is used for: Evaluating the current status of the distribution system Making distribution system operational adjustments to optimize water quality Determining the need to perform maintenance activities Assessing the need for additional monitoring Future planning 20 Please consider the environment before printing. 10

11 How is Data Used? Mapping chlorine residual data illustrates low residuals in a particular area of the system This data triggers flushing to restore water quality and an evaluation of operational practices to reduce water age 21 Grab samples Field analysis Laboratory analysis Online analyzers Hydraulic models Water age Water quality Non-water quality data Financial data Customer complaints Data Generation 22 Please consider the environment before printing. 11

12 Data Integrity is Critical Making appropriate decisions depends on having data that is: Representative Accurate Recorded and accessible 23 Ensuring Data Integrity An attentive operational staff can be a great tool in ensuring data integrity! Walk-around, visual inspection Maintenance procedures and logs Data validation tools/discussion Standard Operating Procedures (SOPs) 24 Please consider the environment before printing. 12

13 Ensuring Representative Data Sampling The analysis is only as good as the sample Ensure good sample collection technique Example sterile technique for bacteriological samples Online analyzers Meet the needs of the specific application Installed correctly Correct flow rates and pressures Properly maintained and calibrated 25 Ensuring Representative Data Selecting critical sample sites Regulatory sites are a must Consider sites at high risk of water quality degradation What additional sites are needed to protect water quality and support operational decision making? 26 Please consider the environment before printing. 13

14 Ensuring Representative Data Optimized sample sites for disinfectant residual may include: Finished water entry points and metering points to other systems Stage 1 and/or Stage 2 Disinfection By-Product (DBP) sites Initial Distribution System Evaluation (IDSE) or IDSE-type sites Downstream of storage facilities Upstream/downstream of boosters Low flow areas Unlined cast iron mains High HRT areas/other concerns 27 Sampling Map 28 Please consider the environment before printing. 14

15 Data Accuracy Ensure data accuracy by: Developing SOPs for key activities (and train and verify accuracy), such as sample collection and analysis Calibrate instruments according to the manufacturer s instructions Verify performance on a regular basis 29 Data Accuracy If data is transmitted to a Supervisory Control and Data Acquisition (SCADA) system, ensure that: Instrument output scaling matches that on the SCADA system Local instrument reading matches SCADA display Default factory settings may need to be adjusted 30 Please consider the environment before printing. 15

16 Data Recording & Accessibility Alarms Use alarms and controls to protect water quality Collecting the right data Sample locations Frequency Type of measurement Event logs 31 Data Recording & Accessibility Data accessibility considerations Data storage location Data trending Correlation Do the staff that need to use the data have access to the data they need? 32 Please consider the environment before printing. 16

17 Distribution System Parameters Key Distribution System Monitoring Parameters Disinfectant Residual (F/T Cl 2 ) Nitrification-related parameters (chloramine systems): free and total ammonia, nitrite, nitrate TTHM &HAA5 Lead Copper Chloride Sulfate ph Turbidity Conductivity Bacteria/HPC System-specific parameters 33 Set Performance Goals Sample Location Tests Target Entry Points Treatment Plant Clearwell Turbidity ph, alkalinity Flow TOC Free/Total chlorine Monochloramine Free ammonia TTHM/HAA5 Total Coliform TC Sites Designated System Locations Temperature Disinfectant residual Total Coliform Heterotrophic Plate Count (HPC) <0.10 NTU , mg/l NTE 10 MGD <1.5 mg/l mg/l/ mg/l 2.0 mg/l as Cl 2 <0.05 mg/l N <40/30 ug/l ND deg C >0.2 mg/l FCl 2 ND <500 cfu/100ml Storage Tanks Tank Outflow Temperature Disinfectant residual Total Coliform DBP Sites Designated System Location Temperature Disinfectant residual Total Coliform TTHM/HAA5 ph LCR Sites Designated System Locations Temperature Disinfectant residual Alkalinity ph, conductivity Calcium deg C >0.2 mg/l FCl 2 ND deg C >0.2 FCl 2 ND <60/40 ug/l deg C >0.2 FCl mg/l , >20 us/cm >40 mg/l 34 Please consider the environment before printing. 17

18 Create a Sampling Plan Sample Location Tests Frequency Sample By Entry Points Treatment Plant Clearwell Turbidity ph, alkalinity Flow TOC Free/Total chlorine Monochloramine Free ammonia TTHM/HAA5 Total Coliform Continuous Continuous, daily Continuous Daily Continuous Continuous 1/shift 1/shift Monthly Treatment plant operator TC Sites Designated System Locations Temperature Disinfectant residual Total Coliform Heterotrophic Plate Count Weekly Water quality technician Storage Tanks Tank Outflow Temperature Disinfectant residual Total Coliform Weekly (when tank is discharging) Water quality technician DBP Sites Designated System Location Temperature Disinfectant residual Total Coliform TTHM/HAA5 ph Monthly (as required by regulations) Water quality technician LCR Sites Designated System Locations Temperature Disinfectant residual Alkalinity ph, conductivity Calcium Monthly (as required by regulations) Water quality technician 35 Collect Data Follow the distribution system sampling plan to collect data Communicate and evaluate data Modify procedures as necessary 36 Please consider the environment before printing. 18

19 Summary Turning Data into Information is Mission Critical to Protecting Public Health Ensure Data is: Representative Accurate Documented Communicated 37 Ask the Experts Kevin Linder Dr. Todd Brewer Dr. Yan Zhang Enter your question into the question pane at the lower right hand side of the screen. Please include your name and specify to whom you are addressing the question. 38 Please consider the environment before printing. 19

20 Applying the Partnership for Safe Water Approach to Improve Distribution System Disinfectant Residual Todd F. Brewer, PhD, PE Manager Water Quality & Optimization City Utilities of Springfield, MO 39 Agenda Rationale/Learning Objectives Partnership for Safe Water (PSW) Treatment & City Utilities PSW Distribution Optimization CU Distribution System Integrity Components Critical Indicators» Performance Improvement Variables Monitoring Efforts/Operational Practices at CU Water Quality Management Case Study Example Summary 40 Please consider the environment before printing. 20

21 Rationale Increased Focus on Distribution Issues Buried No Longer Report Revised TCR Revised LCR Stage 2 DBPR Operational Techniques for Optimized Performance => continual improvement 41 Learning Objectives Practices employed by Partnership Utilities for: Residual maintenance Monitoring approach Effective Communication Turning Data => Information => Action 42 Please consider the environment before printing. 21

22 EPA - Increasing Focus on Distribution Systems $1 trillion 1.5 trillion?? over the next years nationwide 43 Revised TCR & LCR Select White Papers 44 Please consider the environment before printing. 22

23 Water City Utilities Approximately 80,000 customers (accounts) Roughly 160, ,000 population Two WTPs: Fulbright 20.5 MGD conventional Blackman WTP 46.5 MGD conventional 45 Partnership for Safe Water Optimization & Self-Assessment Treatment Program Director s Award (15+ years) Consistent Low Turbidities on Finished Water (<0.1 NTU) Seasonal Adjustment of Disinfectant Residual Free Chlorine System Manage Operations for minimizing water age in system Corrosion Control Treatment 46 Please consider the environment before printing. 23

24 PSW - Distribution Optimization Critical Integrity Components (performance indicators): Water Quality (disinfectant residual) Hydraulic (positive pressure) Physical (main break frequency reduction) Performance Improvement Variables => Improving these will lead to improvements in Critical Components Cross- Connection & Backflow Customer Complaints Disinfection Byproducts Energy Management External Corrosion Control Internal Corrosion Control Flushing Maintaining Hydrants, Valves, & Blowoffs Nitrification Pipeline Installation, Rehab, & Replacement Post- Precipitation/ Inorganic Accumulation Security & Online Monitoring Storage Facility Operations & Maintenance Water Age Modeling Water Loss Control Water Quality Sampling & Response 47 CU - Distribution System 1,200+ Miles of Water Main 7,700+ Fire Hydrants 32,000 valves Max Day = 59.4 MGD Average Day Usage MGD historically closer to MGD more recently 48 Please consider the environment before printing. 24

25 Miles CU - Distribution System 1 ¼ up to 48 PVC, Cast Iron, Ductile ( 94%) AC, Concrete, Steel, HDPE ( 5-6%) 28 miles >100 years old ( %) 210+ miles years old (17-18%) CU - Distribution System Miles of Distribution Main - By Installation Year Please consider the environment before printing. 25

26 CU - Distribution System Distribution (%) of Mains Installed by Decade 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% Decade % Cumulative % 30.0% 20.0% 10.0% 0.0% 51 PSW - Distribution Optimization Critical Integrity Components (performance indicators): Water Quality (disinfectant residual) Hydraulic (positive pressure) Physical (main break frequency reduction) Performance Improvement Variables => Improving these will lead to improvements in Critical Components Cross- Connection & Backflow Customer Complaints Disinfection Byproducts Energy Management External Corrosion Control Internal Corrosion Control Flushing Maintaining Hydrants, Valves, & Blowoffs Nitrification Pipeline Installation, Rehab, & Replacement Post- Precipitation/ Inorganic Accumulation Security & Online Monitoring Storage Facility Operations & Maintenance Water Age Modeling Water Loss Control Water Quality Sampling & Response 52 Please consider the environment before printing. 26

27 Distribution Optimization - (Some) Key Data Elements Water Quality Disinfectant residual data from TCR and other sampling sites Bacteriological Data Flushing information relative to low disinfectant residuals Physical Integrity Main break frequency Pipeline renewal and replacement rate Asset Inventory Valve & Hydrant Exercise/Inspection records Hydrant repair records Hydraulic Pressure Readings for minimum of 12 months 53 Pressure Monitoring 54 Please consider the environment before printing. 27

28 250 Target Optimization Goal 180/year Physical Integrity Main Break Occurrence ( ) Disinfectant Residual Monitoring 50 TCR sites monitored weekly Cross-section of town EACH WEEK One positive total coliform sample in 2012 (2000+ samples) Zero Positives in 2011 <5 positives/year Disinfectant residual monitoring at each site 56 Please consider the environment before printing. 28

29 CFU/mL CFU/mL Water Quality Sampling Efforts 57 HPC Monitoring TCR Sites Baseline Monitoring Dead Ends Higher water age data New Mains Compare to system Criteria for acceptance TCR Sample Sites Total Chlorine (ppm) Dead End/Flushing Locations Total Chlorine (ppm) 58 Please consider the environment before printing. 29

30 Flushing Data => Information 59 Flushing Data => Information 60 Please consider the environment before printing. 30

31 Flushing Data => Information 61 AIRPORT LOOP CASE STUDY: DISTRIBUTION OPERATION & WATER QUALITY IMPACTS 62 Please consider the environment before printing. 31

32 63 Airport Area Residual Several Options considered: Routine flushing Disinfect mains near airport Pigging Booster chlorination Actions Taken: Seasonally increase chlorine residual Routine, extended flushing Increased WQ Monitoring Minimize water age (booster pump) Trial basis to test/permanent solution installed 64 Please consider the environment before printing. 32

33 65 66 Please consider the environment before printing. 33

34 Summary 67 PSW Distribution Optimization & Related Efforts WQ preservation and management should be a key factor in distribution operation decisions Self-Assessment process a critical component in implementing effective optimization strategies Team comprised of cross-section of utility Data integration plan? Effective use of collected data? WQ Optimization goals well-defined? Asset Management programs not only prolong life of asset and control costs, but impact WQ in a positive fashion 68 Please consider the environment before printing. 34

35 Residual Optimization & Management Monitoring TCR locations, flushing sites, dead ends, tanks all areas of system Manage Water Age Tank turnover practices Flushing program Protect System Integrity New Main Disinfection Backflow/cross-connection Renewal/replacement Main Repair practices Pressure Management Asset Management/Inspection 69 Communication 70 Please consider the environment before printing. 35

36 AWWA Additional Resources Standard G200 (Dist System Operation & Mgmt) Manuals of Water Supply Practice AWWA Standards PSW Distribution Optimization Program WRF Projects/Reports (#4109 and others) State Guidance/Standards 71 Ask the Experts Kevin Linder Dr. Todd Brewer Dr. Yan Zhang Enter your question into the question pane at the lower right hand side of the screen. Please include your name and specify to whom you are addressing the question. 72 Please consider the environment before printing. 36

37 Nitrification Prevention and Control-An Optimization Case Study by LBWD Yan Zhang Civil Engineer Long Beach Water Department 73 Presentation Outline PSW and LBWD s Participation PSW Guide and Nitrification Overview LBWD s Nitrification Prevention and Control Plan Conclusions and Acknowledgement 74 Please consider the environment before printing. 37

38 Presentation Outline PSW and LBWD s Participation PSW Guide and Nitrification Overview LBWD s Nitrification Prevention and Control Plan Conclusions and Acknowledgement 75 PSW Goal: offer utilities optimization tools to improve beyond regulatory requirements Programs Treatment SW: 1995 GW: Pilot 2015 Distribution: 2011 PSW and LBWD Goals LBWD Goal: provide a reliable highest quality water at the lowest cost Programs Treatment GW: Pilot 2015 Distribution: Please consider the environment before printing. 38

39 LBWD Drinking Water System Treated Surface water from MWD, chloraminated 2 Reservoirs, 33 storage tanks One Groundwater Treatment Plant Two off-site Reservoirs One booster pump station ~900 miles mains ~20,500 valves, ~6,600 hydrants,?? blowoffs $T MWD Zone Boosted Zone Signal Hill $T Blended Zone Local GWTP Treated water from MWD Groundwater 77 Presentation Outline PSW and LBWD s Participation PSW Guide and Nitrification Overview LBWD s Nitrification Prevention and Control Plan Conclusions and Acknowledgement 78 Please consider the environment before printing. 39

40 PSW s Consideration of Nitrification Customer Complaints DBP Compliance Nitrification Micro Compliance /Sampling Flushing Disinfection: Mains, Repairs Water Age Disinfectant Residual Storage Internal Corrosion Control Security Emergency Mgmt Post Precipitation Inorg Accum Copyright: AWWA PSW 79 PSW s Consideration of Nitrification Customer Complaints DBP Compliance Nitrification Micro Compliance /Sampling Flushing Disinfection: Mains, Repairs Water Age Disinfectant Residual Storage Internal Corrosion Control Security Emergency Mgmt Post Precipitation Inorg Accum Copyright: AWWA PSW 80 Please consider the environment before printing. 40

41 Nitrification in Drinking Water Systems NH 3 Cl 2 Chlorine No nitrification problem Switch to Form Chloramine Decay 3NH 2 Cl N 2 + NH 3 + 3Cl - +3H + Nitrifying Bacteria Nitrification Happens NH 2 Cl + NO 2- + H 2 O NH 3 + NO 3- + HCl NH 3 + O 2 NO H + + 2e - NO 2- + H 2 O NO H + + 2e - The Death Spiral! 81 Nitrification in Drinking Water Systems Situations favoring nitrification Low chlorine: ammonia (Cl 2 : NH 3 ) ratio Warm Temperature High Water Age Conditions favoring biofilm When nitrification happens Increased nitrite and nitrate Rapid decay of chloramine residual Increased HPC and coliform growth Decreased ph, alkalinity, DO Corrosion 82 Please consider the environment before printing. 41

42 PSW s Guidance on Nitrification Components of An Optimized System for Nitrification Management Control Cl 2 : NH 3 ratio, 4.5:1 to 5:1 Decrease water age o Flushing o Operate DS to minimize water age o Design DS to reduce dead end Monitoring at potential high water age sites o Cl 2, ammonia, nitrite, HPC, ph, etc Set nitrification action levels and response plan 83 Presentation Outline PSW and LBWD s Participation PSW Guide and Nitrification Overview LBWD s Nitrification Prevention and Control Plan Conclusions and Acknowledgement 84 Please consider the environment before printing. 42

43 LBWD s Nitrification Prevention and Control Plan Prevention Monitoring Response 85 LBWD s Nitrification Prevention and Control Plan Prevention Optimizing Operation o Closely control Cl 2 : NH 3 ratio o Minimize detention time o Maintain disinfectant level o Inspect and clean storage tanks-5 year rotation o Flush pipelines according to the flushing plan Staff Education and Training 86 Please consider the environment before printing. 43

44 Closely Control Cl 2 : NH 3 Ratio (online and grab ammonia monitoring) 87 Minimize Detention Time at Storage Tanks 88 Please consider the environment before printing. 44

45 Maintain Disinfectant Level 89 Dead-End Main Flushing Plan All >900 dead-ends identified in 2006 and updated annually Dead-ends flushed based on a 5 year rotation; problem sites are flushed every year 90 Please consider the environment before printing. 45

46 Staff Education and Training Chloramine chemistry review Cl 2 : NH 3 ratio and Breakpoint chlorination Dose response and testing timing Sampling/Analysis procedure training New technologies 91 LBWD s Nitrification Prevention and Control Plan Monitoring Sites Analysis Frequency Reservoir Influent Total and combined Cl 2, total and free ammonia Continuous Reservoir Effluent Total Cl 2 Continuous Individual Storage Tanks Total and free Cl 2 Weekly to Bi-weekly Individual Storage Tanks DS Sites DS Sites T, ammonia, nitrite, HPC, total Coliform, ph Total Cl 2, nitrite, HPC, total Coliform T, total and free ammonia, ph Monthly, Oct to Apr Bi-monthly, May to Sep Weekly Monthly 92 Please consider the environment before printing. 46

47 LBWD s Nitrification Prevention and Control Plan Response Parameter Action 1 Action 2 Action 3 Action 4 Chlorine Residual (mg/l) <1.0 <0.5 NH 3 -N-F (mg/l) <0.2 <0.2 <0.2 <0.2 Nitrite-N (mg/l) <0.030 > > >0.10 HPC (cfu/ml) <500 >500 >500 > LBWD s Nitrification Prevention and Control Plan Response Action Level Tanks Distribution Systems 1 ( mg/l Cl 2 ) 2 ( mg/l Cl 2 ) Routine Monitoring Check valve positions; Increase reservoir cycling In the affected tank, dose to restore Cl 2 level and Cl 2 :NH 3 ratio; transfer and blend waters with waters from non-impacted tanks Routine Monitoring Check valve positions; Local hydrant flushing until Cl 2 >1.5 mg/l; 3 (<1.0 mg/l Cl 2 ) 4 (<0.5mg/L Cl 2 ) Affected tank: isolate, breakpoint chlorine, or drain to reclaimed tanks/clean, test and put back in service If possible, switch water supply Wider-scale unidirectional flushing until Cl 2 level > 1.5 mg/l; Notification to City Management and Regulators 94 Please consider the environment before printing. 47

48 Presentation Outline PSW and LBWD s Participation PSW Guide and Nitrification Overview LBWD s Nitrification Prevention and Control Plan Conclusions and Acknowledgement 95 Conclusions Nitrification control is important in chloraminated system Prevention is the Key Optimize system design and operation to oclosely control Cl 2 : NH 3 ratio oreduce water age Monitor Online monitoring of both Cl 2 and NH 3 Clear monitoring plan Establish clear nitrification action levels and appropriate response Deep cycling Isolate tanks Flushing 96 Please consider the environment before printing. 48

49 Acknowledgement Long Beach Water Department Partnership for Safe Water Program Team Members Long Beach Water Department treatment plant maintenance and water quality lab staff 97 Ask the Experts Kevin Linder Dr. Todd Brewer Dr. Yan Zhang Enter your question into the question pane at the lower right hand side of the screen. Please include your name and specify to whom you are addressing the question. 98 Please consider the environment before printing. 49

50 Bookstore Resources Water Treatment Process Monitoring & Evaluation Catalog No: Water Quality and Treatment: A Handbook on Drinking Water, Sixth Edition Catalog No: M12 Simplified Procedures for Water Examination, Sixth Edition Catalog No: E 99 Upcoming Webinars December 14 Regulatory Update December 15 Emerging Legal Issues: A Lead & Legionella Trend January 18 Dealing with Potential Water Quality Issues from Source Water and Treatment Changes 100 Please consider the environment before printing. 50

51 Register for a 2017 Webinar Bundle Individual Full Year Member $900 Nonmember $1,500 Group Full Year Member $2,400 Nonmember $3,750 *Register by December 31, 2016 and receive a 10% discount when entering the code 2017BUNDLE at checkout Upcoming Conferences Register Online at: Please consider the environment before printing. 51

52 Thank You for Joining AWWA s Webinar As part of your registration, you are entitled to an additional 30-day archive access of today s program. Until next time, keep the water safe and secure. 103 Presenter Biography Information Kevin Linder has been involved with the water industry since 1992 and is currently a Water Treatment Plant Supervisor for Aurora Water s Binney Water Purification Facility, leading the team effort to achieve the Partnership for Safe Water s Phase IV Excellence in Treatment Award for Aurora Water s Binney and Wemlinger Water Treatment Facilities. Kevin has been a Partnership for Safe Water volunteer since 2004 and is currently the program s PEAC-Treatment Vice-Chair. Kevin has led optimization efforts for more than 20 years and received the Ralph R. Leidholt Operator if the Year Award in Kevin holds a Class A Treatment Plant Operator license and a Distribution 4 license for the state of Colorado. klinder@auroragov.org Dr. Todd Brewer is currently the Manager Water Quality & Optimization with City Utilities of Springfield, Missouri. Todd is a licensed Water Operator (A) in both Oklahoma and Missouri. He has taught college-level chemistry and engineering courses for the last 20 years, and has also been an instructor for several operator certification classes and AWWA workshops. He is active in National AWWA (various committees), in the MO-AWWA section - currently serving as vice-chair - and in the Partnership for Safe Water (Distribution Optimization Program). Todd.brewer@cityutilities.net Dr. Yan Zhang is a Senior Civil Engineer with the Long Beach Water Department. She obtained her master s and Ph.D. in Civil Engineering from Virginia Tech. Yan has nearly ten years experience working in the drinking water field. Her primary role at LBWD involves treatment plant and distribution system operation optimization, water quality and regulatory compliance. She has also worked on many research projects including nitrification in drinking water systems, distribution system and premise plumbing corrosion and water quality issues, desalination intake, membrane process, post-treatment research and recycled water facility operation. Yan.zhang@lbwater.org 104 Please consider the environment before printing. 52

53 CE Credits (CEUs) and Professional Development Hours (PDHs) AWWA awards webinar attendees CEUs. If you wish to take advantage of the opportunity to earn CEUs, visit Certificates will be available within 30 days of the webinar 105 How To Print Your CEU Certificate of Completion Within 30 days of the webinar, login to or register on the website. If you are having problems, please Once logged in, go to: My Account My Transcript Information To print your official transcript, click Print list To print certificates, click Download certificate 106 Please consider the environment before printing. 53

54 2016 Webinar Sponsors 107 Please consider the environment before printing. 54