anchor: Third, as noted in the section above on visibility valuation, we chose not to include in our Base Estimate the valuation of residential visibility or valuation of recreational visibility at Class I areas outside of the study regions examined in the Chestnut and Rowe (1990a, 1990b) study.
positive: Our Base Estimate doesn't relate to the valuation of residential visibility.
negative: Our Base Estimate relates to the valuation of residential visibility.