Need to return call by / at/between and

. Signature:

___________________________ TELEPHONE CALL RECORD

 Incoming Call  Outgoing Call Page 1 of 2

Date: 7/27/2015 Time: DISTRIBUTION :

Project No.: 0317.02.029.032 Project Name : Steam Electric

Company: Aqua Metrology Systems (AMS) Sunnyvale, CA Contact: Rix Sistek

Phone No.: 602

- 370

- 1001

ERG Contact : Mary Willett

GENERAL SUBJECT : Selenium Analyzers

TOPICS DISCUSSED AND ACTION TAKEN

Selenium Analyzer Product:

Aqua Metrology Systems (AMS) offers a continuous online selenium analyzer which uses an electrochemical analysis technology from TraceDetect. The analyzer is called SafeGuard IIITM. The unit measures the selen i te (+I V ) oxidation state of selenium but when configured for total selenium analysis has a pre

- mineral ization step to take all forms of selenium in the sample to the selen a te oxidation state and then reduce s that to the selenite

oxidation state for measurement. The unit draws a small sample and the analysis process takes about an hour with the unit capable of prov i ding around 20 results per day.

Testing with FGD Wastewater:

The vendor has been working on their analyzer for use with FGD wastewaters since 2010. They have conducted testing on client sites (Duke plant in Indiana, and testing at Southern Resea rch). These were long

- term tests and they are currently performing testing now with their integrated unit ( which includes a pre

- processor and the SafeGuard IIITM analyzer). Mr. Sistek indicated that they are about to ship four systems to the Water Research
Center, American Electric Power, and EPRI. Mr. Sistek was asked if they had any publicly available results from the testing conducted on FGD wastewater; he indicated that they had testing results in an IW C presentation; however, review of that presentation does not show long

- term selenium results from FGD wastewaters. The vendor did however also provide a technology paper which included FGD

- specific analysis results. See file: Automated Selenium Analyzer.pdf.

They also market the technology for selenium analysis in mining and drinking water applications.

Basis of the Technology:

The technology (pre

- processor followed by the analyzer) mineralizes, oxidizes, and reduces the sample which is

then measured using catho dic stripping voltammetry (CSV).

Comparison of the analyzer to ICP

- MS:

The vendor provided a paper which provides data showing a comparison of the AMS system results versus ICP

MS for FGD wastewaters (both pre

- and post

- FGD wastewater treatment). See fil e: Automated Selenium Analyzer.pdf. The system literature indicates that the comparison of the analyzer to the laboratory method is good (within +/

- 10%). Mr. Sistek indicated that for FGD wastewaters the analyzer can detect down to 5 ppbNeed to return call by / at/between and

. Signature:

___________________________ and the maximum d etection depends on the influent but would be several thousand ppb. Mr. Sistek indicated that the monitor is not impacted by chloride concentrations. When asked about TDS interferences, Mr. Sistek

indicated that issue is addressed by their pre

- processor wh ich mineralizes the sample to take all forms of selenium in the sample to the selen a te state and then reduces back to the selenite state for measurement.

Cost and Training Information:

For the online analyzer the system costs are:

Capital Costs: $ 50,000 Annual Costs: $ 5,950 /yr (they provide a warranty service for 5 years that includes reagents used in the analyzer and technical support)

The system can be run by operator level personnel and requires only about an hour of training (to cover

software use a nd how to download the data). Installation takes about 1

- 2 days (including performance checks) and there is no separate installation cost other than long

- distance travel.

Residuals from Analysis:

The system does use reagents though the waste amounts are small as each sample pulled for analysis is only

about 20

– 30 ml in size. The unit includes a waste bottle as part of the system and the waste can be drained if neutralized (it is acidic in nature) or the waste could be added back into the treatment syst em flow.