Re: Gypsum

["Tom O'Dou" <radware@lvcm.com>]

There is a NORM-TENORM discussion group at norm-tenorm@yahoogroups.com



Tom O'Dou, CHP, RRPT



----- Original Message -----

From: "Richard F. Orthen" <rorthen@EARTHSCIENCES.NET>

To: "Radsafe BBS" <radsafe@list.vanderbilt.edu>

Sent: Friday, May 10, 2002 8:09 AM

Subject: Gypsum





> Where are published credible values found for the typical isotopic assay

> (U-Ra-Th et. al.) of the following gypsum materials: (1) phosphogypsum

> "stacks", (2) mine, (3) synthetic (FGD), and (4) underlayment (flooring)?

> Trying to objectively demonstrate whether the demolition waste profile

> signature I have is classifiable as NORM or TENORM.  The major gypsum

> suppliers (like USG) don't have a clue about this aspect of their

products,

> although some are smart enough not to source phosphogypsum.  Any leads

would

> be greatly appreciated.  Thank you.

>

> Rick Orthen

>

>

>

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