Tritium in concrete

[David Allyson <D.Allyson@surrc.gla.ac.uk>]

Dear RADSAFE Members

Does anyone have any information about levels of tritium currently found in
concrete, from buildings that were built around 1962-1963, but NOT those
found in any nuclear facilities?  This period would have corresponded to
significantly higher levels of atmospheric tritium from weapons fallout.
Would it be feasible to expect that levels of tritium in concrete (from the
water used in its manufacture), to be above clearance levels?