Project No.: 0172.07.029.030 DISTRIBUTION 

Page _1_ of __1_

Project Name: Steam Electric Rulemaking 

TELEPHONE CALL RECORD 

 Outgoing Call 

Date: 12/02/09 Time: 9:45 am EST 

Company Name: American Electric Power 

 

 

Contact Name: Tim Lohner 

Phone No.:(614) 716-1255 

Name: TJ Finseth Eastern Research Group

GENERAL SUBJECT : FGD Systems and FGD Wastewater Treatment System Operation and Verification 

 

TOPICS DISCUSSED AND ACTION TAKEN 

On Wednesday, December 2, 2009 at 9:45 AM I contacted Mr. Tim Lohner. I explained to Mr. Lohner that I 

was calling to confirm the operation of the FGD systems and FGD wastewater treatment systems for the 

Mitchell, Mountaineer, Amos, and Cardinal. I began the conversation discussing the operations at the Mitchell 

Plant. 

Mitchell Plant 

Mr. Lohner confirmed that limestone forced oxidation systems are operated on Units 1 and 2 and that no 

additives are added to the FGD systems. Mr. Lohner also confirmed that Units 1 and 2 both operate SCR 

systems and a Trona injection system. Additionally, Mr. Lohner stated that the SCRs operate year round. 

Mr. Lohner said that that no new units are planned to begin operation in 2010. 

Mr. Lohner confirmed that there have not been any significant changes to the FGD wastewater treatment 

system; however, he stated that the plant could be making changes to add organosulfide to the treatment system, 

but he would need to confirm the plants current plans. In a follow-up e-mail, Mr. Lohner stated that the plant 

will have an operational organosulfide treatment system in place by May 4, 2010. 

Mr. Lohner confirmed that the FGD wastewater treatment system only treats FGD scrubber purge wastewater 

and that the system was designed by the company CH2MHill. 

Mr. Lohner explained that the FGD wastewater treatment system does not target any specific metals but is used 

to remove solids from the wastewater. Mr. Lohner stated that he was not aware of any internal limits on the 

FGD wastewater treatment effluent that is transferred to the bottom ash pond. 

Mr. Lohner explained that the plant is not planning to make any changes to the operation of the FGD 

wastewater treatment system (other than adding the organosulfide treatment). 

Mr. Lohner stated that the typical flow rate of the FGD wastewater treatment system has not changed since 

sampling for the detailed study. 

 

Mr. Lohner said that he was under the impression that the FGD wastewater treatment system operates and 

discharges in batch mode, because the treatment system receives intermittent transfers of FGD scrubber purge. 

Mr. Lohner stated that he will get back to me with additional information. 
Mr. Lohner explained that there could be possible outages scheduled between April and November 2010; 

however, he did not know the specific dates times for the outages. Mr. Lohner stated that he will get back to me 

with additional information regarding the outages. 

Mr. Lohner stated that he doesn’t know as much information regarding the FGD system and FGD wastewater 

treatment system operations at Mountaineer, Amos, and Cardinal, so he tried contacting the individual plant 

contacts at each of the plants, but none of the contacts were available. Mr. Lohner asked that I send him the 

questions for each of the plants via e-mail so he can pass them along to the plant contacts to fill out the 

information.