Opinion ID: 1236784
Heading Depth: 5
Heading Rank: 2

Heading: Period of Ownership

Text: Just as the district court's land area calculations did not correspond to the harms in this case, its simple fraction based on the time that the Railroads owned the land cannot be a basis for apportionment. The fraction it chose assumes constant leakage on the facility as a whole or constant contamination traceable to the facility as a whole for each time period; no evidence suggests that to be the case. Again, if adequate information were available, it would make sense to eliminate the Railroads' liability for the period before B & B leased the Railroad parcel. See, e.g., Rohm and Haas, 2 F.3d at 1280. The evidentiary vacuum concerning the amount of contamination traceable to the pre-lease period, however, precludes any such calculation here.