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Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

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Published on: December 9, 2012

Needs-based sewerage prioritization: alternative to conventional cost-benefit analysis.

Md M Rashid¹, Donald F Hayes

¹Dept Engrg, Univ of Southern Indiana, Evansville, IN 47712, United States. mrashid@usi.edu

Journal of Environmental Management

|June 1, 2011

Summary

This study introduces a new method for prioritizing sewerage projects by quantifying benefits as an index. This approach aids in effective resource allocation for public works, offering an alternative to traditional cost-benefit analysis.

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Watershed Planning within a Quantitative Scenario Analysis Framework

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Area of Science:

Environmental Engineering
Public Health
Urban Planning

Background:

Sewerage infrastructure is crucial for public health and environmental protection.
Budgetary constraints necessitate efficient prioritization of sewerage projects.
Conventional cost-benefit analysis has limitations in quantifying non-monetary benefits of sewerage.

Purpose of the Study:

To develop an empirical approach for selecting and prioritizing sewerage projects.
To create a model that quantifies project benefits as a dimensionless index.
To provide a decision-making tool for sewerage prioritization that considers need, urgency, and broader project goals.

Main Methods:

Quantification of project benefits using a dimensionless index.
Definition of benefit as the difference in anticipated impact (with vs. without the project).
Calculation of benefit-cost ratios (B/C) using a cost-effectiveness approach, avoiding monetary conversion of all benefits.

Main Results:

A novel index effectively quantifies the multifaceted benefits of sewerage projects.
Benefit-cost ratios were calculated for 16 unserviced areas in Ensenada, Mexico.
A ranked list of sewerage projects was generated based on the cost-effectiveness approach.

Conclusions:

The proposed empirical approach offers a powerful decision tool for sewerage prioritization.
This method provides an effective alternative to conventional cost-benefit analysis by focusing on cost-effectiveness.
The framework can be adapted for prioritizing other public works projects, enhancing resource allocation and impact.