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___________________________ Project No.: 0172.09.029.0 4 1 DISTRIBUTION

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Project Name: Steam Electric Rulemaking

TELEPHONE CALL RECORD

Outgoing Call Date: 10/13/2011 Time: 10:30 AM

Company Name: Ameren Energy Generating Co ( Newton and
Meredosia Power Plants ) Contact Name: Steve Whitworth

Phone No.: 314

- 554

- 4908

Name: Elizabeth Sabol , Eastern Research Group

GENERAL SUBJECT : Newton and Meredosia Power Plant FGMC System s

TOPICS DISCUSSED AND ACTION TAKEN

I cal led Mr. Whitworth to discuss the flue gas mercury control (FGMC) systems at the Ameren Energy Newton and Meredosia power plants in Illinois. Mr. Whitworth stated that the IL Ameren Newton and Meredosia plants

installed halogenated actived carbon FGMC syste m s to comply with the IL state mercury air regulations on Units 1 and 2 and the Netwon plant and Unit 3 at the Meredosia plant

. Mr. Whitworth also stated that the systems at Newton and Meredosia were practically identical systems located at the different p lants.

Mr. Whitworth stated that the facilities receive powdered activated carbon, in compliance with the IL state regulation, in bulk and store it on site in silos. The powdered activated carbon is applied to the system u sing a metered system based on t he flow of the flue gas (acfm). For every million acfm, the system injects 5 lbs of activated carbon upstream of the cold side ESP (and down stream of the air heater). They are currently looking at certain plant configurations which allow for activated carb on injection upstream of the air heater to allow for more mercury removal. The activated carbon is then removed by the ESP with the fly ash.

At the Newton facility, there are two different types of systems because Unit

- 1 has wet and dry fly handling

syst ems and Unit 2 has a dry handling system only

. The collected f ly ash from Unit 1 is sent to POND

- 1 and discharged via outfall 001 or sent to Landfill

- 1. The collected f ly ash from Unit

- 2 is sent to Landfill

- 1. The facility is unable to sell the fly ash for beneficial re

- use because of the high amount of carbon (high filming index). Mr. Whitwort h stated that most systems are operated wet because of the loss to sell that ash to concrete companies (Unit 1 actually has the ability to handle fly ash wet and dry at Newton). Mr. Whitworth also stated that Unit 2 at Newton only has dry handling and that they are actually looking into permit reg ulation s to see if they can install wet handling because of the decrease in fly ash sales.

At the Meredosia facility, Unit 3 has a wet fly ash handling system. The collected fly ash is sent to POND

- 1.

Mr. Whitworth stated that there are no other waste streams from the system s rather than the fly ash stream. He stated that there is some recent study that they mercury does not leach from the activated carbon and the concentration of mercury at their effluent actually went down after the FGMC start up.

Mr. Whitworth will follow

- up with me on the plant SCR catalyst wash water. The questionnaire suggests that it

is from the Coffee n facility, and that due to permit reg ulation s, the catalysts are washed at the Newton site.