2 from the RiskAnal Server

[loc <loc@icx.net>]

Radsafers:

The following 2 messages are cross-posts from the RiskAnal
listserver that looked like they would be of interest to this
audience.

(1)  Judging from past discussions on this list server, some
subscribers might be interested in reading about or
commenting on a proposed new regulation to control radon in
drinking water.  The web link for this proposed regulation is:

     www.epa.gov/safewater/radon.html

There is a 60 day public comment period.

 ----------------------------------------------------------------------

(2)
Subject: RE: Interpretation of wipe sampling data
From: "Strom, Daniel J" <daniel.j.strom@pnl.gov>
Date: Wed, 10 Nov 1999 09:40:05 -0800
X-Message-Number: 7

Scott,

Here at Pacific Northwest National Laboratory, the U.S. Department
of
Energy
Office of Worker Protection Programs and Hazards Management (EH-52)
has
sponsored an on-going research project called "Quantitative
Evaluation of
Contamination Consequences" (QECC; http://qecc.pnl.gov ).  We have a

significant
interest in surface contamination by chemicals and radioactive
materials.

I searched our database and came up with about a hundred references
on
surface
contamination that may be relevant to the interpretation of wipe
samples,
and
posted it at
http://qecc.pnl.gov/QECC_reports/wtrasc.htm.  Many contain general
information
about surface contamination measurements and resuspension (and
therefore
significance).  Most concern radioactive materials, because
measurements
are
relatively easy compared to chemicals, but the underlying processes
are
similar.
There is little information about the home environment that I'm
aware of,
with
the exception of radon progeny.

Two papers that may be of particular interest to you:

Caplan,K.J.  The Significance of Wipe Samples.  American Industrial
Hygiene
Association Journal  53(2):70-75; 1993.

Lichtenwalner,C.P.  Evaluation of Wipe Sampling Procedures and
Elemental
Surface
Contamination.  American Industrial Hygiene Association Journal
53(10):657-659;
1992.

- Dan Strom

The opinions expressed above, if any, are mine alone and have not
been
reviewed
or approved by Battelle, the Pacific Northwest National Laboratory,
or
the U.S.
Department of Energy.

Daniel J. Strom, Ph.D., CHP
Risk Analysis & Health Protection Group, Environmental Technology
Division,
Pacific Northwest National Laboratory
Mail Stop K3-56, PO BOX 999, Richland, Washington 99352-0999 USA
Telephone (509) 375-2626 FAX (509) 375-2019
mailto:daniel.j.strom@pnl.gov
Brief Resume: http://www.pnl.gov/bayesian/strom/strombio.htm
Pagemaster for  http://www.pnl.gov/bayesian   http://qecc.pnl.gov
http://bidug.pnl.gov

Subject: Interpretation of wipe sampling data
From: "Sudweeks, Scott D." <zdg1@cdc.gov>
Date: Tue, 9 Nov 1999 16:01:20 -0500
X-Message-Number: 3

Dear RISKANAL Members:

I am looking for recommendations on how to interpret wipe sample
data.
I
understand that there are recommended standards for lead dust and
PCB
residues, but am unable to locate any screening values, or
methodologies
for
estimating human exposure to other substances deposited on building
interior
surfaces.  There seems to be no consensus regarding the
interpretation of
wipe samples in regards to human exposure, or any standardized way
to
determine if the levels detected in wipe samples pose a threat to
human
health.  How clean is clean? Any advice would be greatly
appreciated.

_______________________
Scott Sudweeks
Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation
Federal Facilities Assessment Branch
1600 Clifton Road, MS E-56
Atlanta, GA 30333
(404) 639-6041, fax -6076


--
=========================================================
Susan L. Gawarecki, Ph.D.
Oak Ridge Reservation Local Oversight Committee, Inc.
=========================================================



************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html