__Figure 13: NPV Comparison -- Safe Harbor Policy: SH/RA50/
B1991 , NSH/RA50/ B1991__

The figure shows two S-shaped curves
that compare the likely NPV for "safe harbor" and "no safe harbor" scenarios.
The *x* axis is labeled "Net Present Value (billions $)" and the *y*
axis is labeled "Probability of Not Exceeding." The S-shaped curve for the "no
safe harbor" scenario is on the left-hand side of the Figure. For the "no safe
harbor" S-shaped curve, the NPV at 10% probability is $ 0.1 billion, the NPV at
50% probability is $ 3.3 billion, and the NPV at 90% probability is $ 6.9
billion. The S-shaped curve for the "safe harbor" scenario is on the
right-hand side of the Figure. For the "safe harbor" S-shaped curve, the NPV
at 10% probability is $ 4.7 billion, the NPV at 50% probability is $ 7.6
billion, and the NPV at 90% probability is $ 11.0 billion.