From: Flanders, Phillip

To: jlapcev@firstenergycorp.com

Cc: Jordan, Ronald ; Thomas Finseth ; Schroeder, Cuc ; Dan-Tam Nguyen ; Anna Dimling

Subject: RE: Follow up to comments on proposed Steam Electric effluent guidelines

Date: Tuesday, March 25, 2014 12:44:18 PM

Joe,

Thank you for the clarifications. Looking at the data we had just a couple more clarifications to ask

you about:

1. What are the units for the MDL in columns D, H, and I? The units are not specified in Rows

4 and 5. Are they same as the data listed below?

2. What is the quantitation limit for the arsenic data in Column D prior to 12/30/2011

(Allegheny’s Chemical Lab)?

3. What is the quantitation limit for the mercury data in Column H?

Thanks, again!

Phillip Flanders, Ph.D.

Environmental Engineer

Engineering and Analysis Division

Office of Science and Technology

Office of Water

Mail Code 4303T

(202) 566-8323

From: jlapcev@firstenergycorp.com [mailto:jlapcev@firstenergycorp.com]

Sent: Monday, March 10, 2014 2:42 PM

To: Flanders, Phillip

Cc: Jordan, Ronald; Schroeder, Cuc; Thomas Finseth; rjones4@firstenergycorp.com;

mjjirousek@firstenergycorp.com; wcannon@firstenergycorp.com

Subject: RE: Follow up to comments on proposed Steam Electric effluent guidelines

Phil,

The attached Word document contains the questions you raised below along with my

responses. I tried pasting the responses into this email, but kept losing the

formatting. Please don’t hesitate to call if you would like to discuss in more detail, or

need further clarification.

Take care,



### Joe LapcevicSupervisor, Water Permitting

(724) 838 – 6099 work

(234) 678 – 2385 fax

FirstEnergy Corp.

800 Cabin Hill Drive

Greensburg, PA 15601-1689

From: Flanders, Phillip [ mailto:Flanders.Phillip@epa.gov ]

Sent: Wednesday, March 05, 2014 9:38 AM

To: Lapcevic, Joseph P

Cc: Jordan, Ronald; Schroeder, Cuc; Thomas Finseth

Subject: RE: Follow up to comments on proposed Steam Electric effluent guidelines

Good Morning Joe,

Thank you for submitting additional data from Hatfield’s Ferry. We believe that this will be helpful

for evaluating comments regarding treatment of FGD wastewater. We would like to ask you some

follow-up questions to ensure that we understand the submitted data. We understand that it may

be difficult to locate some records because of the deactivation of the facility, however we would

appreciate any input that you can offer.

These are the specific questions we would appreciate your input on regarding the Excel Spreadsheet

that you sent us a couple of weeks ago.

1. What method was used for Arsenic in column D (AS

- Arsenic) and Column E (HGTGEO

-

Mercury, Trace, Geochemical Labs)? The MDL is included on the spreadsheet, but we don't know

what the quantitation limit and the reporting limit are.

2. In Column D (AS

- Arsenic) one value is reported as <MDL and several are reported as 0.

What exactly does a reported value of "0" mean? Were these samples also below the MDL? Does

this mean the sample was a nondetect?

3. In Column E (HGTGEO

- Mercury, Trace, Geochemical Labs) several values are reported as

0. What exactly does a reported value of "0" mean? Were these samples also below the MDL?

Does this mean the sample was a nondetect?

4. What is the difference between Column F and Column G, both of which are labeled Hg

(245.7)? Is the unit on Column G a typo? Should they both be ug/L? (The same numbers are

reported in the two columns, but the units are different) Why is the sample from 9/17/2013 listed

as below MDL in Column F and zero in Column G?

5. What is different about the samples reported between 7/7/2009 and 11/29/2011 and

11/6/2012 and 12/10/2013? Decommissioning Hatfield's Ferry only accounts for data acquired after

10/6/2013. The samples from 11/6/2012 onwards do not have sample numbers. Was a different

method or a different laboratory used? Are these values in different units?Thanks in advance for any advice you can offer,

Phillip Flanders, Ph.D.

Environmental Engineer

Engineering and Analysis Division

Office of Science and Technology

Office of Water

Mail Code 4303T

(202) 566-8323



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