EW-4: Stormwater Cost Analysis

Goal

Determine lifecycle costs and savings associated with low impact development techniques and best management practices for stormwater utilities.

Requirements

Conduct a lifecycle cost analysis (LCCA) for stormwater utilities according to the National Cooperative Highway Research Program (NCHRP) Report 565: Evaluation of Best Management Practices for Highway Runoff Control Guidelines Manual.

NCHRP Report 565 can be accessed at the following link:

http://144.171.11.107/Main/Blurbs/Evaluation_of_Best_Management_Practices_for_ Highwa_158397.aspx

The Guidelines Manual is available to download as a CD image file (*.iso). This file can be burned to a CD and then viewed via in PDF.

Documentation

Provide a copy of the LCCA spreadsheet showing the final results of the cost analysis and highlighting the final alternative chosen. The results must show, at minimum, that the following criteria have been addressed:

• Expected service life
• Construction costs
• Maintenance costs
• Interest rate
• Salvage value
• Estimated annual cost of the stormwater management system

Public commentary on credit EW-4