Baseline Optimization Memo

Hi All,

Now that we have the go ahead from Exelon, we are hoping to move rather
quickly on getting the bore holes dug at Braidwood. The optimal
location of the near shaft is well understood, but I believe that we
should revisit the question of what is the optimal location for the far
shaft before the bore holes are dug. Our objective is to choose the
best location given our current knowledge of delta m^2 and the
measurement philosophy, and the odds of what we select now being right
are not great, but we should try anyway. Since a bore hole at the exact
location of the shafts will be critical to reducing the project
contingency, the cost of getting it wrong now will be $50K to $80K to
drill prior to bidding the civil construction.

I have written a memo describing a recent baseline study I conducted,
and discussing the risks associated with uncertainties like delta m^2.
 We would like to initiate the bidding process by May 24th, so the
internal discussion should be complete by then. Please take sometime to
look at the memo and enter the debate.

Thanks,

Jon Link