• Optimization of the Marine Creek and Big Fossil Capital Improvement Plan
  • Alternatives evaluated include inter-basin transfers, conveyance and wet weather flow control facilities (offline linear transport/storage facilities).
  • The objective of the optimization was to evaluate feasible alternatives and identify several low cost solutions to contain the 5-year, 6-hour design storm.
  • The primary optimization scenario identified cost savings in the order of $20 M (20%) when compared to the Baseline Solution.
  • Optimization scenarios were completed with and without linear T/S alternatives.The least cost solution included two linear T/S facilities that helped to attenuate and disperse peak flows, thereby eliminating downstream conveyance improvements.

Bend, oregon

Primer Consultant: Murray, Smith, and Associates

CIP OPTIMIZATION is an advanced modeling methodology that allows the analysis of thousands of solutions, resulting in the best possible combination of CIP improvements based in cost and hydraulic performance. Traditional methods allow a planning engineer to evaluate only few alternative solutions when developing a CIP (Capital Improvement Program).

  • Detailed analysis of green and grey infrastructure alternatives.
  • Continuous rainfall data used to achieve EPA consent decree target of 4 overflow events in typical year.
  • Alternatives evaluated include green infrastructure (35 CSO Basins) conveyance, linear transport/storage, storage tanks, Real Time Control (RTC), inter-basin diversions, and asset condition improvement.
  • LTCP cost reduced by $112 M (27%).
  • CSO volumes reduced by an additional 30% compared to Baseline LTCP.Sensitivity analysis to test assumptions relating to the effectiveness of green infrastructure alternatives

cip optimization


  • Comprehensive Collection System Master Plan (CSMP) optimization.
  • Integrated analysis of hydraulic and asset condition-based drivers.
  • Alternatives evaluated include conveyance, storage, flow diversions, interceptor alignments and satellite treatment.
  • Extensive sensitivity analyses to test population growth scenarios, model calibration accuracy and water conservation trends.
  • Input and advice from the 18-member Sewer Infrastructure Advisory Group (SIAG) and City Council.
  • Transparent and defensible process leading to unanimous approval of the CSMP by SIAG. Over $40 M (25%) savings compared to Baseline Solution.

fort worth, texas

Primer Consultant: Optimatics

south bend, indiana

Consultant Team : Cardno, EmNet, Greeley-Hansen, and Optimatics