Document ID: EPA-HQ-OAR-2003-0051-0994
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2023-08-16T04:00Z

From: 
Jones, DonnaLee <Jones.Donnalee@epa.gov>
Sent:
Wednesday, September 14, 2016 2:14 PM
To: 
Jonelle S Scheetz <JSScheetz@uss.com>
Cc:
Terry L Redenbaugh <TLRedenbaugh@uss.com>; Raymond, Gabrielle <graymond@rti.org>
Subject: 
RE: U. S. Steel Clairton Works - ICR Test Question

The answers, I have been told, are as follows:

1.        Use the WHO 2005 factors. 
2.        ND should be set equal to the estimated detection limit (EDL)
3.        Please submit lab data as an attachment to the ERT.

If this doesn't help your issue, let me know.
_____________________________________________________________
Regards,
Donna Lee Jones, Ph.D.
Senior Technical Advisor, Metals Sector
U. S. Environmental Protection Agency
Office of Air Quality Planning and Standards
Sector Policies and Programs Division / Metals & Inorganic Chemicals Group (D 243-02)
Research Triangle Park, NC  27711  Tele:  (919)  541-5251  Fax  (919)  541-3207
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Reasonableness never fails to be appreciated."  - anon.

From: Jonelle S Scheetz [mailto:JSScheetz@uss.com] 
Sent: Wednesday, September 14, 2016 10:37 AM
To: Jones, DonnaLee <Jones.Donnalee@epa.gov>
Cc: Terry L Redenbaugh <TLRedenbaugh@uss.com>
Subject: U. S. Steel Clairton Works - ICR Test Question

Dr. Jones, 

I was looking for some guidance on the question below that was submitted from the lab that is conducting water sample analysis. 

TEQ  -  it is noted in the table on page 15 of 40 to report TEQs.  This is a calculation using the individual homologue results multiplied by toxicity factors (there are several sources of factors) and usually includes the OCDF and OCDF in the calculation.  There are also different ways to do the calculation with regards to ND (not detect) results.  Use a value of ND=`0', use a value of ND=0.5xEDL, or use a value of ND=EDL, where the EDL is the estimated detection limit.  So two questions:  1.  Which toxicity factors should we be using for the calculation (I believe most folks use the WHO 2005 factors) and 2.  Which way should the ND results be treated? 

Thank you, 

Jonelle Scheetz
Clairton Environmental
United States Steel Corporation
Office: 412-233-1015
Cell: 412-445-1946