RE: U, Ra in Groundwater

["Cook, Lew (LCOO)" <LCOO@chevron.com>]

Oh yes, one thing further is the radon that is inevitably in this water.
Often the radon will be a few orders of magnitude higher than the radium 226
values, so if this is a drinking water well without aeration, the levels of
radon in a house using this water could be high enough to warrant remedial
action - in this case, discontinuing use of the well. Suspect any other
wells in the same formation nearby of being high in radon regardless of the
U or Ra values, as Ra and U are determined by the chemistry of the water and
the radon levels will be independent of that.

Lew
510 242-7040
lcoo@chevron.com


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