AutoCASE and Envision

by | Feb 16, 2015 | Uncategorized

The link between economic value and the Institute for Sustainable Infrastructure’s EnvisionTM rating system is shown in the AutoCASE documentation. Information on the mapping between economic value and Envision can be found in the Business Case Evaluator documentation.

AutoCASE has been developed to enhance the EnvisionTM rating system, adding the ability for the EnvisionTM system to provide value-based and risk-adjusted analyses of infrastructure projects. To do this AutoCASE calculates the value (net societal benefit) accounting for risks to complement the EnvisionTM rating system. Net benefits are allocated to the Envision categories.

“Economic factors are an essential component of sustainable infrastructure, along with environmental and social considerations. The business case for sustainable infrastructure goes beyond a return on investment: it also includes infrastructure effectiveness, costs, reliability, and livability. These factors contribute to how communities perceive these infrastructure projects which in turn has a real dollar value associated with it.”1

Impact Infrastructure is a Charter Member of ISI. AutoCASE was developed with the ISI Economics Committee and provides a value-based and risk-adjusted analysis of stormwater infrastructure projects and maps these to Envision credits.

In AutoCASE’s results section Envision credit categories are in the Project Summary:

AutoCASE Envision

Figure 1: EnvisionTM Credit Categories in AutoCASE


Figure 2: Economic Value Breakdown by EnvisionTM Category

Below is an example of how AutoCASE maps into EnvisionTM.

“Quality of Life addresses a project’s impact on surrounding communities, from the health and wellbeing of individuals to the wellbeing of the larger social fabric as a whole. These impacts may be physical, economic, or social. Quality of Life particularly focuses on assessing whether infrastructure projects are in line with community goals, incorporated into existing community networks, and will benefit the community long-term. For that purpose, community involvement should be sought by infrastructure owners. Community members (both users and non-users) affected by the project should be considered important stakeholders in the decision-making process (during design as well as during operations). The category is further divided into three subcategories: Purpose, Wellbeing, and Community.”2

A detailed mapping of AutoCASE value to EnvisionTMcredits for this category is shown in the figure and table below:

Figure 3: Detailed Mapping from Economic Value to EnvisionTM Quality of Life



Economic Benefit

(Possible Link;Probable Link)

Economic Benefit Drivers

(User input;Regional default;Alternate user input, Derived from user inputs)



QL1.1 Improve Community Quality of Life

Community collaboration

QL1.2 Stimulate Sustainable Growth and Development

Sustainable growth

Recreational Use Benefit; Jobs & Shadow Wage

QL1.3 Develop Local Skills and Capabilities

Local economic growth and productivity

Jobs & Shadow Wage

Number of construction jobs created; Number of operation jobs created; Percent supervisory jobs;Local wage rate; Local unemployment rate; Social security and tax rate;Social cost of poverty


QL2.1 Enhance Public Health and Safety

Risks of new approaches

QL2.2 Minimize Noise and Vibration

Noise levels

Neighborhood Quality

QL2.3 Minimize Light Pollution

Night Sky

Neighborhood Quality

QL2.4 Improve Community Mobility and Access


Neighborhood Quality

QL2.5 Encourage Alternative Modes of Transportation

Active transportation and transit

Neighborhood Quality

Number of houses; Impact of project on house prices in immediate area; Impact of project on house prices nearby; Percent in immediate area; Percent nearby; Median sales price; Double counting discount

QL2.6 Improve Accessibility, Safety & Wayfinding

Safety and security


QL3.1 Preserve Historic and Cultural Resources

Cultural resources

Recreational Use Benefit

Visits; Percent new visits; User value per day

QL3.2 Preserve Views and Local Character

Local landscape

Neighborhood Quality

QL3.3 Enhance Public Space

Public space

Recreational Use Benefit

Visits; Percent new visits; User value per day

QL0.0 Innovate or Exceed Credit Requirements

1 Economic Companion Tools to Envision

2 Envision Version 2.0 A Rating System for Sustainable Infrastructure, The Institute for Sustainable Infrastructure, 2012.


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