### 13339 Hagers Ferry Road Huntersville, NC 28078-7929 McGuire Nuclear Complex - MG03A2 Phone: 980-875-5245 Fax: 980-875-4349 

# Order Summary Report 

# Analytical Laboratory

Order Number: J13080487 Project Name: FGD Wastewater ABS 3

L ab Contact: Jason C Perkins


## Date: 9/17/2013 Customer Address: 253 Plant Allen Road Customer Name(s): Robbin Jolly, Bill Kennedy

Belmont, NC 28012

Phone: 980-875-5348
Report Authorized By: (Signature)



### Program Comments: Please contact the Program Manager (Jason C Perkins) with any questions regarding this report.
Data Flags & Calculations: Any analytical tests or individual analytes within a test flagged with a Qualifier indicate a deviation from the method quality system or quality control requirement. The qualifier description is found at the end of the Certificate of Analysis (sample results) under the qualifiers heading. All results are reported on a dry weight basis unless otherwise noted. Subcontracted data included on the Duke Certificate of Analysis is to be used as information only. Certified vendor results can be found in the subcontracted lab final report. Duke Energy Analytical Laboratory subcontracts analyses to other vendor laboratories that have been qualified by Duke Energy to perform these analyses except where noted. Data Package: This data package includes analytical results that are applicable only to the samples described in this narrative. An estimation of the uncertainty of measurement for the results in the report is available upon request. This report shall not be reproduced, except in full, without the written consent of the Analytical Laboratory. Please contact the Analytical laboratory with any questions. The order of individual sections within this report is as follows: Job Summary Report, Sample Identification, Technical Validation of Data Package, Analytical Laboratory Certificate of Analysis, Analytical Laboratory QC Reports, Sub-contracted Laboratory Results, Customer Specific Data Sheets, Reports & Documentation, Customer Database Entries, Test Case Narratives, Chain of Custody (COC)
Certification: The Analytical Laboratory holds the following State Certifications : North Carolina (DENR) Certificate #248, South Carolina (DHEC) Laboratory ID # 99005. Contact the Analytical Laboratory for definitive information about the certification status of specific methods. Jason C Perkins

# Sample ID's & Descriptions:

Sample ID Plant/Station Collection Date and Time Collected By Sample Description 2013020516 ALLEN 26-Aug-13 6:58 AM J. KIRBY FGD Purge Eff 2013020517 ALLEN 26-Aug-13 7:02 AM J. KIRBY EQ Tank Eff 2013020518 ALLEN 26-Aug-13 7:09 AM J. KIRBY BioReactor 1 Inf 2013020519 ALLEN 26-Aug-13 7:14 AM J. KIRBY BioReactor 2 Inf 2013020520 ALLEN 26-Aug-13 7:05 AM J. KIRBY BioReactor 2 Eff 2013020521 ALLEN 26-Aug-13 7:50 AM J. KIRBY Filter Blk 2013020522 ALLEN 05-Aug-13 3:00 PM C. KNOX TRIP BLANK 7 Total Samples

### COC and .pdf report are in agreement with sample totals

and analyses (compliance programs and procedures). All Results are less than the laboratory reporting limits. All laboratory QA/QC requirements are acceptable. Yes No



# Technical Validation Review Checklist:

Yes No

Yes No



# Report Sections Included:

Job Summary Report Sub-contracted Laboratory Results Sample Identification Customer Specific Data Sheets, Reports, & Documentation Technical Validation of Data Package Customer Database Entries Analytical Laboratory Certificate of Analysis Analytical Laboratory QC Report Chain of Custody

Reviewed By: 

### DBA Account Date: 

### 9/17/2013 Electronic Data Deliverable (EDD) Sent Separately

# Certificate of Laboratory Analysis This report shall not be reproduced, except in full.



## Order # J13080487

2013020516 Collection Date: 26-Aug-13 6:58 AM 

## Site: FGD Purge Eff Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF NITRITE + NITRATE (COLORIMETRIC) Nitrite + Nitrate (Colorimetric) 57 mg-N/L EPA 353.2 09/09/2013 12:15 BGN9034 0.5 50
INORGANIC IONS BY IC Bromide 80 mg/L EPA 300.0 08/30/2013 15:55 BGN9034 5 50 MERCURY (COLD VAPOR) IN WATER Mercury (Hg) 65.8 ug/L EPA 245.1 08/30/2013 09:22 DKJOHN2 2.5 50
TOTAL RECOVERABLE METALS BY ICP Boron (B) 314 mg/L EPA 200.7 09/03/2013 10:00 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 105 ug/L EPA 200.8 09/10/2013 14:48 DJSULL1 10 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) 218 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Chromium (Cr) 378 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Copper (Cu) 259 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Nickel (Ni) 360 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Selenium (Se) 1270 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 Zinc (Zn) 495 ug/L EPA 200.8 08/29/2013 13:36 DJSULL1 10 10 SELENIUM SPECIATION - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete Vendor Method V_AS&C



## 2013020517 Collection Date: 26-Aug-13 7:02 AM 

## Site: EQ Tank Eff Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF MERCURY (COLD VAPOR) IN WATER Mercury (Hg) 47.4 ug/L EPA 245.1 08/30/2013 09:24 DKJOHN2 2.5 50
TOTAL RECOVERABLE METALS BY ICP Boron (B) 308 mg/L EPA 200.7 09/03/2013 10:05 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 67.4 ug/L EPA 200.8 09/10/2013 14:52 DJSULL1 10 10

# Certificate of Laboratory Analysis This report shall not be reproduced, except in full.



## Order # J13080487

2013020517 Collection Date: 26-Aug-13 7:02 AM 

## Site: EQ Tank Eff Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) 162 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Chromium (Cr) 277 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Copper (Cu) 203 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Nickel (Ni) 299 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Selenium (Se) 1020 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10 Zinc (Zn) 386 ug/L EPA 200.8 08/29/2013 13:40 DJSULL1 10 10



## 2013020518 Collection Date: 26-Aug-13 7:09 AM 

## Site: BioReactor 1 Inf Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF NITRITE + NITRATE (COLORIMETRIC) Nitrite + Nitrate (Colorimetric) 46 mg-N/L EPA 353.2 09/09/2013 12:16 BGN9034 0.25 25 Mercury by EPA 200.8 - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete ug/l Vendor Method V_AS&C
TOTAL RECOVERABLE METALS BY ICP Boron (B) 291 mg/L EPA 200.7 09/03/2013 10:09 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 104 ug/L EPA 200.8 09/10/2013 14:55 DJSULL1 10 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Chromium (Cr) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Copper (Cu) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Nickel (Ni) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Selenium (Se) 94.0 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 Zinc (Zn) < 10 ug/L EPA 200.8 08/29/2013 13:43 DJSULL1 10 10 SELENIUM SPECIATION - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete Vendor Method V_AS&C

# Certificate of Laboratory Analysis This report shall not be reproduced, except in full.



## Order # J13080487

2013020519 Collection Date: 26-Aug-13 7:14 AM 

## Site: BioReactor 2 Inf Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF Mercury by EPA 200.8 - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete ug/l Vendor Method V_AS&C
TOTAL RECOVERABLE METALS BY ICP Boron (B) 274 mg/L EPA 200.7 09/03/2013 10:13 MHH7131 0.5 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Chromium (Cr) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Copper (Cu) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Nickel (Ni) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Selenium (Se) 17.9 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10 Zinc (Zn) < 10 ug/L EPA 200.8 08/29/2013 13:47 DJSULL1 10 10



## 2013020520 Collection Date: 26-Aug-13 7:05 AM 

## Site: BioReactor 2 Eff Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF NITRITE + NITRATE (COLORIMETRIC) Nitrite + Nitrate (Colorimetric) < 0.01 mg-N/L EPA 353.2 09/09/2013 12:17 BGN9034 0.01 1
INORGANIC IONS BY IC Bromide 44 mg/L EPA 300.0 08/30/2013 16:14 BGN9034 5 50 Mercury by EPA 200.8 - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete ug/l Vendor Method V_AS&C
TOTAL RECOVERABLE METALS BY ICP Boron (B) 197 mg/L EPA 200.7 09/03/2013 10:17 MHH7131 0.5 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Cadmium (Cd) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Chromium (Cr) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Copper (Cu) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Nickel (Ni) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Selenium (Se) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Silver (Ag) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5 Zinc (Zn) < 5 ug/L EPA 200.8 08/29/2013 13:50 DJSULL1 5 5

# Certificate of Laboratory Analysis This report shall not be reproduced, except in full.



## Order # J13080487

2013020520 Collection Date: 26-Aug-13 7:05 AM 

## Site: BioReactor 2 Eff Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF SELENIUM SPECIATION - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete Vendor Method V_AS&C
TOTAL DISSOLVED SOLIDS TDS 16000 mg/L SM2540C 08/29/2013 15:00 100 1



## 2013020521 Collection Date: 26-Aug-13 7:50 AM 

## Site: Filter Blk Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF DISSOLVED METALS BY ICP-MS Selenium (Se) < 1 ug/L EPA 200.8 09/10/2013 14:34 DJSULL1 1 1



## 2013020522 Collection Date: 05-Aug-13 3:00 PM 

## Site: TRIP BLANK Matrix: OTHER

Analyte Analysis Date/Time Method Units Qualifiers RDL Result 

## Sample #:

Analyst DF TOTAL RECOVERABLE METALS BY ICP Boron (B) < 0.05 mg/L EPA 200.7 09/03/2013 09:36 MHH7131 0.05 1
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Cadmium (Cd) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Chromium (Cr) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Copper (Cu) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Nickel (Ni) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Selenium (Se) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Silver (Ag) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1 Zinc (Zn) < 1 ug/L EPA 200.8 08/29/2013 13:16 DJSULL1 1 1

# September 9 , 2013

Jay Perkins Duke Energy Analytical Laboratory Mail Code MGO3A2 (Building 7405) 13339 Hagers Ferry Rd. Huntersville, NC 28078 (704) 875-5 245 Project: Allen ACI Test FGD WWTS ABS 1 (LIMS#J13080487)

Mr. Perkins, Attached is the report associated with four (4 ) aqueous samples submitted for total mercury and selenium speciation analysis on August 2 7 , 2013. The samples were received in a sealed cooler at -0.3 ° C on August 2 8, 2013. Selenium speciation analysis was performed via ionchromatography inductively coupled plasma collision reaction cell mass spectrometry (IC-ICPCRC -MS). Mercury quantitation was performed via cold vapor inductively coupled plasma mass spectrometry (CV-ICP-MS). Any issues associated with the analysis are addressed in the following report. If you have any questions, please feel free to contact me at your convenience.

Sincerely,

Russell Gerads Vice President Applied Speciation and Consulting, LLC

# Applied Speciation and Consulting, LLC Report prepared for: Jay Perkins Duke Energy Analytical Laboratory Mail Code MGO3A2 (Building 7405) 13339 Hagers Ferry Rd. Huntersville, NC 28078 Project: Allen ACI Test FGD WWTS ABS 1 (LIMS#J13080487)

September 9 , 2013

1. Sample Reception Three (3 ) aqueous samples were submitted for selenium speciation analysis on August 2 7 , 2013. Three (3 ) additional samples were submitted for total mercury quantitation. All samples were received in acceptable condition on August 2 8 , 2013 in a sealed container at -0.3 ° C. All samples were received in a laminar flow clean hood, void of trace metals contamination and ultra-violet radiation, and were designated discrete sample identifiers. The 40mL borosilicate glass vials submitted for total mercury were preserved with bromine monochloride (BrCl) solution. The resulting samples were stored in a secure polyethylene container, known to be free from trace metals contamination, until the analyses could be performed. An aliquot of each sample requiring selenium speciation evaluation was filtered (0.45μm) and each filtrate w as stored in a secure, monitored cryofreezer (maintained at a temperature of -80 ° C) until selenium speciation analysis could be performed via ion chromatography inductively coupled plasma collision reaction cell mass spectrometry (IC-ICP- CRC -MS).

2. Sample Preparation All sample preparation is performed in laminar flow clean hoods known to be free from trace metals contamination. All applied water for dilutions and sample preservatives are monitored for contamination to account for any biases associated with the sample results. Total Mercury Quantitation by CV -ICP- MS All samples and preparation blanks for total mercury quantitation were preserved with 2 % (v/v) BrCl. The resulting samples wereanalyzed for mercury via cold vapor inductively coupled plasma mass spectrometry (CVICP-MS).

# Selenium Speciation Analysis by IC -ICP-CRC- MS Prior to analysis, an aliquot of each sample was filtered with a syringe filter (0.45μm) and injected directly into a sealed autosampler vial. No further sample preparation was performed as any chemical alteration of a sample may shift the equilibrium of the system, resulting in changes in speciation ratios.

3. Sample Analysis All sample analysis is preceded by a minimum of a five-point calibration curve spanning the entire concentration range of interest. Calibration curves are performed at the beginning of each analytical day. All calibration curves, associated with each species of interest, are standardized by linear regression resulting in a response factor. All sample results are instrument blank corrected to account for any operational biases associated with the analytical platform. Prior to sample analysis, all calibration curves are verified using second source standard s which are identified as initial calibration verification standards (ICV). Ongoing instrument performance is identified by the analysis of continuing calibration verification standards (CCV) and continuing calibration blanks (CCB) at a minimum interval of every ten analytical runs. Total Mercury Quantitation by CV -ICP- MS The sample fractions for total mercury quantitation were analyzed by cold vapor inductively coupled plasma mass spectrometry (CV-ICP- MS ) on September 4 , 201 3 . Aliquots of each sample are reacted with a reductant in -line and transported to a gas-liquid separator. The volatile elemental mercury that is formed is then swept by a stream of argon gas into a radio frequency (RF) plasma where energy-transfer processes cause desolvation, atomization, and ionization. The ions are extracted from the plasma through a differentially-pumped vacuum interface and separated on the basis of their mass- to -charge ratio (m/z) by a mass spectrometer. A solid-state detector detects ions transmitted through the mass analyzer and the resulting current is processed by a data handling system. Selenium Speciation Analysis by IC -ICP-CRC- MS Eachsample for selenium speciation analysis w as analyzed by ion chromatography inductively coupled plasma collision reaction cell mass spectrometry (IC-ICP- CRC -MS) on August 30, 2013. An aliquot of eachsample is injected onto an anion exchange column and mobilized by a basic (pH > 7) gradient. The eluting selenium species are then introduced into a radio frequency (RF) plasma where energy-transfer processes cause desolvation, atomization, and ionization. The ions are extracted from the plasma through a differentially-pumped vacuum interface and travel through a pressurized chamber ( CRC ) containing a reaction gas which preferentially reacts with interfering ions of the same target mass to charge ratios (m/z). A solid-state detector detects ions transmitted through the mass analyzer and the resulting current is processed by a data handling system. Retention times for each eluting species are compared to known standards for species identification.

# 4. Analytical Issues

The overall analyses went well and no significant analytical issues were encountered. All quality control parameters associated with these samples were within acceptance limits. The estimated method detection limits (eMDLs) for selenite, selenate, and selenocyanate are generated from replicate analyses of the lowest standard in the calibration curve. Not all selenium species are present in preparation blanks; therefore, eMDL calculations based on preparation blanks are artificially biased low. The eMDL for methylseleninic acid and selenomethionine is calculated from the average eMDL of selenite, selenate, and selenocyanate. The calibration does not contain methylseleninic acid or selenomethionine due to impurities in these standards which would bias the results for other selenium species. The eMDL for mercury has been calculated using the standard deviation of the preparation blanks preserved and analyzed concurrently with the submitted samples. The mercury recovery for the matrix spike duplicate performed on the sample identified as Batch QC was above the established control limit of 125% (128.9%). All other quality control parameters were within acceptance limits signifying acceptable instrument performance. Since the variance is isolated to the individual analysis no corrective action was necessary. If you have any questions or concerns regarding this report, please feel free to contact me. Sincerely,

Russell Gerads Vice President Applied Speciation and Consulting, LLC

### Sample Results
Sample ID Total Hg Se(IV) Se(VI) SeCN MeSe(IV) SeMe Unknown Se Species (n) FGD Purge Eff NR 26.5 65 ND (<1.5) ND (<1.3) ND (<1.3) 0 (0) BioReactor 1 Inf 0.242 36.0 55 ND (<0.36) ND (<0.33) ND (<0.33) 0 (0) BioReactor 2 Inf 0.0474 NR NR NR NR NR NR BioReactor 2 Eff 0.0164 ND (<0.24) ND (<0.39) ND (<0.36) ND (<0.33) ND (<0.33) 0 (0) All results reflect the applied dilution and are reported in μg/L NR = Analysis not requested ND = Not detected at the applied dilution SeCN = Selenocyanate MeSe(IV) = Methylseleninic acid SeMe = Selenomethionine Unknown Se Species = Total concentration of all unknown Se species observed by IC-ICP-MS n = number of unknown Se species observed Report Generated by: Russell Gerads Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen ACI Test FGD WWTS ABS 3

Contact: Jay Perkins

Date: September 9, 2013 LIMS #J13080487

### Quality Control Summary - Preparation Blank Summary

Analyte (μg/L) PBW1 PBW2 PBW3 PBW4 Mean StdDev eMDL* eMDL 5x eMDL 250x eMDL 1000x Hg 0.0012 0.0006 0.0000 0.0005 0.0006 0.0005 0.0003 0.0015

- - Se(IV) 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.24 0.96 Se(VI) 0.000 0.000 0.000 0.000 0.000 0.000 0.002

- 0.39 1.6 SeCN 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.36 1.5 MeSe(IV) 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.33 1.3 SeMe 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.33 1.3 eMDL = Estimated Method Detection Limit *Please see narrative regarding eMDL calculations

Quality Control Summary - Certified Reference Materials Analyte (μg/L) CRM True Value Result Recovery Hg NIST 1641d 1568 1799 114.7 Se(IV) LCS 4.79 4.70 98.3 Se(VI) LCS 4.74 4.50 94.8 SeCN LCS 4.46 4.40 98.6 MeSe(IV) LCS 3.24 2.85 88.0 SeMe LCS 4.66 4.30 92.3 Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen ACI Test FGD WWTS ABS 3

Contact: Jay Perkins LIMS #J13080487 Date: September 9, 2013 Report Generated by: Russell Gerads

### Quality Control Summary - Matrix Duplicates Analyte (μg/L) Sample ID Rep 1 Rep 2 Mean RPD Hg Batch QC 0.0132 0.0129 0.0131 2.3 Se(IV) Batch QC 312.5 289.9 301.2 7.5 Se(VI) Batch QC 65.4 66.6 66.0 1.8 SeCN Batch QC ND (<1.5) ND (<1.5) NC NC MeSe(IV) Batch QC 6.40 6.62 6.5 3.4 SeMe Batch QC ND (<1.3) ND (<1.3) NC NC ND = Not detected at the applied dilution NC = Value was not calculated due to one or more concentrations below the eMDL

Quality Control Summary - Matrix Spike/ Matrix Spike Duplicate Analyte (μg/L) Sample ID Spike Conc MS Result Recovery Spike Conc MSD Result Recovery RPD Hg Batch QC 2.000 2.470 122.8 2.000 2.591 128.9* 4.8 Se(IV) Batch QC 5560 6039 103.2 5560 5950 101.6 1.5 Se(VI) Batch QC 5045 5204 101.8 5045 5211 102.0 0.1 SeCN Batch QC 4575 4570 99.9 4575 4582 100.2 0.3 *The recovery exceeds the established control limit of 125%. Please see narrative. Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen ACI Test FGD WWTS ABS 3

Contact: Jay Perkins LIMS #J13080487 Date: September 9, 2013 Report Generated by: Russell Gerads