The appraised value per acre of managed timberland is the present worth of $1.00 times the difference between the future value of the harvest income less the future value of the management cost less a property tax adjustment for Class II, and a blend of Class III and Class IV tax rates for Class III and Class IV properties. However, the appraised value for any grade of managed timberland will not be less than $25 per acre. In no case may managed timberland values for class III and IV property be lower than $225 per acre for Grade 1; $150 per acre for Grade 2; $75 per acre for Grade 3; and class II properties may not be lower than $200 per acre for Grade 1; $140 per acre for Grade 2; and $50 per acre for Grade 3.
W. Va. Code R. § 110-1H-10