In response to acid rain damage to Chesapeake Bay, a collaborative federal and state program has been proposed. You have been hired to evaluate the benefits of the plan as part of a formal benefit-cost analysis. Use the travel cost method (TCM) to accomplish this goal, based upon a $20 admission fee and the following pre- and post-policy recreational demand functions: 

Pre-policy:........P = 72 − 0.04V₀

Post-policy:......P = 90 − 0.04V₁, 

where V is number of visitors in thousands and P is the admission fee.