PAPA Investment Model

This is a multi-objective, mathematical programming model to maximize pollution prevention, cost and energy savings, and minimize investment and life-cycle costs. It is built around the Army / DOD environmental policy goals. The model was developed by the Army Concepts Analysis Agency (CAA), in October, 1994.

The program develops and evaluates investment strategies in support of environmental policy and program requirements, using previously accumulated data and incorporating policy and budget parameters. Project cost benefit data is collected from all available sources such as hazardous waste minimization reports, databases, completed project economic analyses, etc. Where the cost benefit data was absent, it was estimated from comparable projects with assistance from the Army Environmental Center (AEC). Types of costs taken to account include procurement, facility modification, and labor costs, and recurring (operation and maintenance) costs. Annual pollution reduction (tons per year) can also be recorded. Annual savings or payback periods can be computed. The definition of life-cycle costs used here is the total (full) internal costs of a project. The model can incorporate changes in policy, budgetary, and technical data elements to develop and evaluate alternate investment strategies.

The program runs on an IBM workstation using an IBM optimization package. The program is primarily being used by the Army Chief of Staff for Installation Management. It has not as yet been adapted for use by other organizations or Federal facilities.

Contact information:
US Army Concepts Analysis Agency
8120 Woodmont Avenue
Bethesda, MD 20814-2792


Jim Connelly - 301-295-1682
Maj. Tyrone Allen - 301-295-1443
FAX: 301-295-1662.

Basis for evaluation:
Based on information on tools received from the DOD and telephone communications with Jim Connelly in August, 1995.


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