RE: Radioactivity in sewer sludge

["Williamson, Matthew" <Matthew.Williamson@nypa.gov>]

10CFR20.2003(a)(1) the material is readily soluble (or is readily
dispersible biological material) in water

Hopefully, the RAM being put down the drain isn't just anything that fits.
Yes, ash and dirt will go down the drain, but it's hardly soluble or
dispersible.

Reconstitution in sludge is inevitable, but the regulations and guidance are
written to help reduce this phenomena.

We monitor the local municipal sewage treatment plant.  We do see consistent
occurrences of isotopes from medical administrations. (but, there are no
licensees that I am aware of tying into the local STP).

Matt Williamson
Indian Point Unit 3
Williamson.m@nypa.gov
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html