An important component to decision analysis software is cost/benefit analysis. This may be translated as payoff per level of effort. In a cost/benefit analysis, the level of effort or cost required to achieve a desired goal is modeled or estimated. Often, if the goal is numerically definable and ranges over a set of values, cost benefit curves incrementally show how cost increases, decreases, or fluctuates across an increasing range of goal values through an XY graph. SADA provides cost/benefit curves for a range of remedial action goals. These goals may range over the minimum and maximum sample values or may range over the corresponding human health risk values, Ecological Benchmark ratios, or Custom Values.
To utilize the cost benefit tool in SADA, you must specify parameters for Decision Scale.
Availability
This interview is available for all analyses that have sampled data (unpooled only) with all data types, including Geobayesian. In addition, it is available for human health analyses with pooled data.
Steps
These are the steps that display in the Steps Window when this interview is selected. Click on the links below for more details about the following steps.
1. See the data, Draw/Edit Prior
2. Set up the site (not available for Geobayesian data)
4. Set update data (only available for Geobayesian data)
5. Set grid specs (not available for Geobayesian data)
6. Interpolation Methods (this step is not enabled for pooled data with human health or Geobayesian data)
7. Correlation modeling (only available if OK or IK is selected under Interpolation method; not enabled for pooled data with human health)
8. Search neighborhood (only available if OK, IK, or Inverse Distance is selected under Interpolation method; not enabled for pooled data with human health)
9. Specify decision criteria (not available for Geobayesian data)
11. Show the results
12. Format picture
13. Auto-document
When Show the results is selected from the Steps Window for human health, ecological, or custom analyses, SADA will ask for the decision criteria. This criteria will depend on the type of analysis. For Geobayesian data, no decision criteria is required.
· Human Health
After selecting Show the Results, SADA presents the risk scenario selection window.
Select the risk scenario of interest and press OK.
· Ecological
After selecting Show the Results, SADA presents the ecological benchmark screening window.
Select the screening option and press OK.
· Custom
After selecting Show the Results, SADA asks the user for the decision criteria.
Select the screening criteria of interest and press OK.
· Geobayesian
After selecting Show the Results, SADA asks the user for a probability cleanup value.
The following image displays a sample block scale Cost versus cleanup map for Anthracene, with general analysis, a confidence of 90%, and a cost per block of 2.
