GIS APPLICATION IN WASTEWATER COLLECTION SYSTEM MANAGEMENT Presenter: Uyiosa Oviawe November 19th, 2014 GENERAL INFRASTRUCTURE PROBLEMS Deterioration. Inflow and Infiltration. EPA’S ESTIMATED >40,000 SSOS/YEAR Power Failure - 11% Insufficient System Capacity - 7% I/I - 27% Pipe Breaks - 12% Source - EPA website Pipe Blockages - 43%  Based on a sample of six communities  Causes of SSOs can vary significantly from community to community TYPICAL ASSET MANAGEMENT • All Paper Survey Binders. • Video in difficult to use Format. • Most Data in the Heads of “long term” Personnel. • High Risk of losing Important System Data at any Moment. A GAP EXISTS IN MANAGING FLOWS • Too many SSOs; Too many NOVs; Too much media attention. • Very costly to react to correct SSOs. • 1 MGD of sewage treatment capacity cost $10 M. DEVELOP HIGH-QUALITY DECISION PROCESSES Information Decisions Failure History (SSOs, etc.) Inspection / Condition Data Maintenance Type & Frequency Decision Process Repair Rehabilitate Maintenance History Replace Data - Knowledge - Intelligence ASSET MANAGEMENT APPROACH Stage IV Life Cycle Capital Program Management Capital Improv. plan Asset Criticality Asset Inventory GIS Management Financial Capacity Funding Planning Scheduling Hydraulic Modeling Asset Assessment •CCTV ( PACP) •I/I Reporting & Data analysis Maintenance •Rehab •Grease •Obstruction Information Management Platform Stage III Planning Stage II Analysis Stage I Field Activities UNDERSTANDING RISK HELPS PRIORITIZE PROJECTS RISK = Consequences of Failure x Probability of Failure Probability High Risk! Low Risk Consequence BREAKS WERE LONGITUDINAL CRACKS ARE CREATED SINK HOLES LOF PARAMETERS SCORING Cleaning Frequencies 0-3 Months 4-6 Months 7- 9 Months 10-12 Months 13-24 Months 25-36 Months > 36 Months Unknown Access Normalize Lof Score 1 1 1 5 1 1 1 1 Normalize LoF Score Easement 4 Right of Way 5 Install Year Pipe LOF Score 1 2 3 4 5 Pipe Material Unk 1890-1899 1900-1909 1910-1919 1920-1929 1930-1939 1940-1949 1950-1959 1960-1969 1970-1979 1980-1989 1990-1999 >=2000 Diameter Pipe Overall rating Score 1 2 3 4 5 Normalize LoF Score <=6" 8"-12" 12"-21" >=21" 3 1 3 2 3 4 2 2 1 2 2 5 4 Normalize LoF Score 2 2 5 1 BR CAS CIP VCP CONC CP CS CSU CT DIP OB PD PE PLAST PP PVC RCP SDR26 SDR35 TTE XXX Normalize Lof Score 1 1 1 2 5 1 1 1 3 1 1 1 1 1 2 3 2 1 1 1 1 NOT ALL FAILURES ARE EQUAL… Congressional Golf Course COF PARAMETERS SCORING 200' to SFBAY Count of Pipes CoF Score NO 3711 1 YES 205 5 200' to Creeks NO Yes Population Density Count of Pipes CoF Score 3885 31 1 5 Counts of Pipes CoF Score <1000 880 1 1000-5000 564 2 1200 3 10,000-15,000 858 4 >15,000 346 5 5000-10,000 PIPE RISK PROFILE SCORE ELEVATED BASIN RISK PROFILE ASSET INVENTORY (GIS) DATA COLLECTION – MANHOLE INSPECTIONS • MACP format (NASSCO Standard). • Includes asset inventory and condition assessment. • Critical to creating or improving a GIS. DATA COLLECTION • GPS • Flow Isolations • Smoke Testing • Flow Metering • Dye Testing SOFTWARE SOLUTION – • Database server solution. FIELD MOBILE APPLICATION GEOSPATIAL DATA MANAGEMENT • win-win solution for the stakeholders of a GIS. Planning Work Order GIS Update Field Crew • Provides seamless integration of field data at marginal operator cost. • Field crew check 95 % GIS data within 3 years resulting in 50 % record updated. • Strong ownership by field crew and managers. CONDITION ASSESSMENT (PACP, MACP) – LIKELIHOOD OF FAILURE Grade Description Estimated Time to Failure 1: EXCELLENT: Minor Defects Unlikely in the foreseeable future 2: GOOD: Defects that have not begun to 20 Years of More deteriorate 3: FAIR: Moderate defects that will continue to deteriorate 4: POOR: Sewer defects that will become 5 to 10 years grade 5 defects within the foreseeable future 5: IMMEDIATE ATTENTION: Defects that require immediate attention 10 to 20 years Has failed or is likely to fail in the next 5 years CAPITAL PLANNING DIRECTION DATA SOLUTION – STRATEGY, PROCESS AND INFORMATION • Provide stand-alone CCTV Defect Codification. • Digitize VHS Video to MPG. • Codify Defects from existing CCTV Video to PACP Database; Compare Pricing with Field ReInspections. • Flow Monitoring for I&I Reduction Tracking. • For 1/10 the cost of traditional flow monitoring, record key points on your sewer and quantify I&I to turn then in true saving – 1MGD I&I saved is between $10M to $30M saving in Capex! END RESULT – REDUCE I/I, SSOS AND CSOS. – LOWER LIFE CYCLE COSTS END RESULT - CAPITAL PROGRAM MANAGEMENT Client AM Needs and Expectations Convert CAD to ESRI GIS Platform Spatial Asset Inventory Software Procurement InfoNet Deployment /Create Network Training Database Analysis of PACP PipeTech Scan and Software Cleaning, CCTV, MH Inspections, Spot Repair Maintenance Planning CMMS Condition /Criticality Assessment Office-FieldOffice Workflow Planning Work Order Field Crew GIS Update