Opinion ID: 1176318
Heading Depth: 2
Heading Rank: 2

Heading: Radon-222 Concentration at One Meter

Text: Using measurements made between March 1985 and March 1986, EFSC found that the annual average radon-222 concentration at a height of one meter above SL was 5.92 picocuries per liter and that the concentration at one meter above LRP was 1.72 picocuries per liter. Before EFSC, petitioners argued that the respective figures should have been 7.53 and 2.28, using measurements made between August 1985 and August 1986. In their brief before this court, petitioners argue that EFSC should have used a weighted average of all of the measurements made between March 1985 and August 1986, which they contend would yield an annual average figure of 6.76 for SL and 2.02 for LRP. EFSC, in its order, rejected petitioners' suggested use of August 1985 to August 1986 measurements because measurements made between March 1986 and August 1986 were based on fewer samples and are therefore not as accurate. EFSC did not address the suggestion made by petitioners in their brief to this court. While we might agree with petitioners that, as a general matter, it would have been preferable to use all of the data, we are in no position to second-guess EFSC as to the accuracy of the unused data. The rejection of these data is not sufficient to make EFSC's findings unreasonable.