Keith D. Hodsden, Sr., P.E. Client Service Manager GIS & Hydraulic Modeling for Water / Sewer Asset Management and Rehabilitation Planning SAME 2012 SA/SC Joint Engineer Training Symposium October 2-4, 2012

 Subsidiary of MWH Global  MWH Soft / Wallingford Software Merger  Company Renamed in March 2011  Same Market Leading Products, Services, Support  Corporate HQ: Denver, CO  Operations HQ: Pasadena, CA  Global offices with local focus  US Offices in Every Time Zone  Experienced software support Innovyze Oveview

US Infrastructure Situation  Aging Infrastructure  Infrastructure design life is 50 to 80 yrs  Out of sight = out of mind  EPA: $170 to 493 Billion in next 20 years*  Congressional Budget Office: $245 to $424 Billion*  Water Infrastructure Network: $420 Billion*  Limited funds = need to prioritize  Military bases arguably worse  “Ostrich” Consideration * EPA 816-R Drinking Water Infrastructure Needs Survey & Assessment – 3 rd Report to Congress, June 2005

Current Situation*  2009 – WSSC had 1,847 water breaks 611 breaks in January breaks in January 2009  240,000 water main breaks/year in USA  Large utility breaks in the Midwest increased from 250/yr to 2,200/yr over 19 years  Baltimore, MD had 1,190 main breaks in 2003 more than 3 per daymore than 3 per day  British study in 2005 correlated diarrhea with low water pressure events (including main breaks)  USGS estimates 1.7 trillion gallons of water lost in the US per year, at a cost of $2.6 Billion * EPA Aging Water Infrastructure Research Program: EPA/600/F-07/015, September, 2007

Historical Infrastructure Needs

Sample Deterioration Curve Pipes do not deteriorate at a constant rate Variables: Material Soil condition Wrapping/Lining External Loading Excavation Activity Corrosion Protection Pipe Depth Pipe Pressure …

What Has Been Done?  Engineering firms develop one-off, proprietary solutions (excel, access, GIS, etc.)  Difficult for clients to use / limited training  No upgrade path  No $$ vehicle for updates  Original author(s) may leave, be promoted, or otherwise unavailable

Asset and Data Management

Asset Management & Rehabilitation Planning

CapPlan Water Overview  Risk-based capital planning tool for water distribution systems  Incorporates hydraulic model, GIS, CMMS data in one platform for analysis  Allows for proactive capital plans  Builds an asset management model

Risk-Based Planning Represents a New Focus for Most Utilities Historical Approach to Renewal Planning Budget Based on Last Year Little knowledge of system risks Backward Looking Projects determined as problems arise during the year Reactive Do as many projects as you can afford each year Budget Constrained Money is spent but overall risk may not have been reduced much Ignores asset and system risks Risk-Based Renewal Planning Based on asset risk scores throughout system and long term forecasts of risk and cost Forward Looking High risk assets slotted for renewal before failure occurs Proactive Budget could be determined based on agreed risk targets for system Risk or Budget Constrained High risk assets addressed first Budget may rise or fall to meet risk targets Focused on risk management

Likelihood of Failure Consequence of Failure Rehabilitation Engine Budget Scenarios Rehabilitation Costs Prioritized Capital Plan Calculation of Risk Multiple Calculation Options CapPlan Work Flow Diagram

Likelihood of Failure W 1 L 1 P1 +W 2 L 2 P2 +…+W m L m Pm Hydraulic Condition (Pressure, Flow, & Velocity) Infrastructure/Asset Data (Age, Material, Dia.) Soil Characteristics Seismic Faults Railroad Intersection Traffic Defect History Joint Type Others

Consequence of Failure W 1 C 1 P1 +W 2 C 2 P2 +…+W m C m Pm Flow (Demand) Supplied Population Density Served Critical Facilities Served Outage/Isolation Analysis Traffic Others

Outage/Isolation Analysis  Evaluate each pipe

Outage/Isolation Analysis  Evaluate each pipe  ID u/s pipes/valves

Outage/Isolation Analysis  Evaluate each pipe  ID u/s pipes/valves  ID d/s pipes/valves

Outage/Isolation Analysis  Evaluate each pipe  ID u/s valves  ID d/s valves  Remove elements

No Water Pressure Low Water Pressure Outage/Isolation Analysis  Evaluate each pipe  ID u/s valves  ID d/s valves  Remove elements  Find pressure problems

Outage/Isolation Analysis  Evaluate each pipe  ID u/s valves  ID d/s valves  Remove elements  Find pressure problems  Evaluate fire flow

Flexible Risk Classification

Calculate Risk Risk Rating = Likelihood x Consequence Renewal Condition Score (Probability of Failure) 1 Neg 2 Low 3 Med 4 High 5 Extreme Consequence of Failure Score (criticality) C = 1 Low Impact B = 2 Medium Impact A = 3 High Impact Linear (Likelihood X Consequence) Bi-directional matrix Multi-criterion classification Likelihood X Consequence is normalized between 0 and 1. For each consequence definition, lower and upper boundaries can be set to define Low, Medium and High risk.

Each Asset Mapped to Risk Matrix

Define Rehabilitation Costs Define Rehabilitation Actions Establish Phasing & Budget View Reports or Maps Rehab Costing and Phasing

Energy Optimization & Sustainability

Energy Management Calculating/Projecting Pump Energy Use Determine total pumping costs based on actual energy cost charges Calculate energy cost for operating pumps under various demand conditions

Pump Scheduler Optimal Pump Scheduling Optimize pump scheduling to minimize energy cost Set constraints for system pressure, tank level, pipe velocity, water age, etc

Sustainability Reduce Power Costs & Carbon Footprint Quickly determine carbon footprint and total energy losses across entire water system Visualize specific pipes, pumps, valves, and taps with the highest carbon footprint

Questions… Keith Hodsden (802)