### 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: J13070407 Project Name: WWTS - Biweekly

L ab Contact: Jason C Perkins


## Date: 8/8/2013 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 2013017082 ALLEN 22-Jul-13 6:57 AM S. YOUNGBLOOD FGD Purge Eff 2013017083 ALLEN 22-Jul-13 7:08 AM S. YOUNGBLOOD EQ Tank Eff 2013017084 ALLEN 22-Jul-13 7:02 AM S. YOUNGBLOOD BioReactor 1 Inf 2013017085 ALLEN 22-Jul-13 7:10 AM S. YOUNGBLOOD BioReactor 2 Inf 2013017086 ALLEN 22-Jul-13 7:07 AM S. YOUNGBLOOD BioReactor 2 Eff 2013017087 ALLEN 22-Jul-13 8:25 AM S. YOUNGBLOOD Filter Blk 2013017088 ALLEN 10-Jul-13 8:30 AM 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: 

### 8/8/2013 Electronic Data Deliverable (EDD) Sent Separately

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



## Order # J13070407

2013017082 Collection Date: 22-Jul-13 6:57 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) 15 mg-N/L EPA 353.2 07/29/2013 13:36 BGN9034 0.1 10
INORGANIC IONS BY IC Bromide 80 mg/L EPA 300.0 08/06/2013 02:23 JAHERMA 5 50 MERCURY (COLD VAPOR) IN WATER Mercury (Hg) 51.8 ug/L EPA 245.1 07/25/2013 14:01 AGIBBS 2.5 50
TOTAL RECOVERABLE METALS BY ICP Boron (B) 77.0 mg/L EPA 200.7 07/30/2013 14:54 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 88.7 ug/L EPA 200.8 07/25/2013 14:16 DJSULL1 10 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) 173 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Chromium (Cr) 157 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Copper (Cu) 182 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Nickel (Ni) 192 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Selenium (Se) 1240 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 Zinc (Zn) 182 ug/L EPA 200.8 08/07/2013 09:51 DJSULL1 10 10 SELENIUM SPECIATION - (Analysis Performed by Applied Speciation and Consulting, LLC) Vendor Parameter Complete Vendor Method V_AS&C



## 2013017083 Collection Date: 22-Jul-13 7:08 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) 33.4 ug/L EPA 245.1 07/25/2013 14:04 AGIBBS 2.5 50
TOTAL RECOVERABLE METALS BY ICP Boron (B) 74.2 mg/L EPA 200.7 07/30/2013 14:58 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 71.8 ug/L EPA 200.8 07/25/2013 14:19 DJSULL1 10 10

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



## Order # J13070407

2013017083 Collection Date: 22-Jul-13 7:08 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) 117 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Chromium (Cr) 115 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Copper (Cu) 140 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Nickel (Ni) 150 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Selenium (Se) 870 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10 Zinc (Zn) 139 ug/L EPA 200.8 08/07/2013 09:55 DJSULL1 10 10



## 2013017084 Collection Date: 22-Jul-13 7:02 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) 13 mg-N/L EPA 353.2 07/29/2013 13:37 BGN9034 0.1 10 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) 67.2 mg/L EPA 200.7 07/30/2013 14:22 MHH7131 0.5 10
DISSOLVED METALS BY ICP-MS Selenium (Se) 65.8 ug/L EPA 200.8 07/25/2013 14:23 DJSULL1 5 5
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 10 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Chromium (Cr) < 10 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Copper (Cu) 16.5 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Nickel (Ni) < 10 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Selenium (Se) 68.3 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/07/2013 09:58 DJSULL1 10 10 Zinc (Zn) < 10 ug/L EPA 200.8 08/07/2013 09:58 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 # J13070407

2013017085 Collection Date: 22-Jul-13 7:10 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) 63.6 mg/L EPA 200.7 07/30/2013 14:26 MHH7131 0.5 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Cadmium (Cd) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Chromium (Cr) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Copper (Cu) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Nickel (Ni) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Selenium (Se) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Silver (Ag) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10 Zinc (Zn) < 10 ug/L EPA 200.8 08/07/2013 10:01 DJSULL1 10 10



## 2013017086 Collection Date: 22-Jul-13 7:07 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) 0.081 mg-N/L EPA 353.2 07/29/2013 13:38 BGN9034 0.01 1
INORGANIC IONS BY IC Bromide 66 mg/L EPA 300.0 08/06/2013 02:42 JAHERMA 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) 51.2 mg/L EPA 200.7 07/30/2013 14:30 MHH7131 0.5 10
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Cadmium (Cd) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Chromium (Cr) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Copper (Cu) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Nickel (Ni) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Selenium (Se) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Silver (Ag) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5 Zinc (Zn) < 5 ug/L EPA 200.8 08/07/2013 10:05 DJSULL1 5 5

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



## Order # J13070407

2013017086 Collection Date: 22-Jul-13 7:07 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 8300 mg/L SM2540C 07/24/2013 14:28 DSBAKE1 25 1



## 2013017087 Collection Date: 22-Jul-13 8:25 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) 1.33 ug/L EPA 200.8 07/25/2013 14:03 DJSULL1 1 1



## 2013017088 Collection Date: 10-Jul-13 8:30 AM 

## 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 07/30/2013 14:13 MHH7131 0.05 1
TOTAL RECOVERABLE METALS BY ICP-MS Arsenic (As) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Cadmium (Cd) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Chromium (Cr) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Copper (Cu) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Nickel (Ni) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Selenium (Se) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Silver (Ag) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1 Zinc (Zn) < 1 ug/L EPA 200.8 08/07/2013 09:44 DJSULL1 1 1

# August 7, 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 - FGD WWTS (Bi-Monthly Routine) (LIMS# J13070407)

Mr. Perkins, Attached is the report associated with four (4 ) aqueous samples submitted for total mercury and selenium speciation analysis on July 23 , 2013. The samples were received in a sealed cooler at 0.4 ° C on July 24 , 2013. Selenium speciation analysis was performed via ion chromatography inductively coupled plasma collision reaction cell mass spectrometry (IC-ICP- CRC -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,

Ben Wozniak Project Manager 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 - FGD WWTS (Bi-Monthly Routine) (LIMS# J13070407) August 7, 2013

1. Sample Reception Three (3 ) aqueous samples were submitted for selenium speciation analysis on July 23 , 2013

. Three (3 ) additional samples were submitted for total mercury quantitation. All samples were received in acceptable condition on July 24 , 2013 in a sealed co ntainer at 0. 4 ° 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 req uiring 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 July 25, 2013 . 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 isthen swept by a stream of argon gas into a radio frequency (RF) plasma where energytransfer 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 July 24, 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 total mercury sample results were corrected for instrument drift in accordance with the continuing calibration verification standards. All associated quality control parameters for mercury were within acceptance limits, signifying that the applied calculations were appropriate. All quality control parameters associated with the selenium speciation analyses were within acceptance limits with the following exception: During the selenium speciation analyses the autosampler failed to inject one of the continuing calibration verification (CCV) standards in the middle of the sample batch, as was evident by the lack of an internal standard peak for this CCV. The fact that the internal standard peaks associated with all other quality control and client samples were consistent indicates that the autosampler error was isolated to this single, aforementioned CCV standard. Additionally, the CCV standard recoveries bracketing the missing CCV standard were within acceptance limits, demonstrating the stability of the analytical platform. The obtained results are therefore deemed representative of the submitted samples and have been reported without qualification. 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. If you have any questions or concerns regarding this report, please feel free to contact me. Sincerely,

Ben Wozniak Project Manager 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 23.2 41.0 13.9 ND (< 1.2) ND (< 1.2) 0 (0) BioReactor 1 Inf 0.832 21.6 34.1 ND (< 0.11) 2.88 ND (< 0.31) 0.99 (1) BioReactor 2 Inf 0.113 NR NR NR NR NR NR BioReactor 2 Eff 0.0168 0.60 ND (< 0.29) ND (< 0.11) ND (< 0.31) ND (< 0.31) 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: Ben Wozniak Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen - FGD WWTS (Bi-Monthly Routine)

Contact: Jay Perkins

Date: August 7, 2013 LIMS #J13070407

### Quality Control Summary - Preparation Blank Summary

Analyte (μg/L) PBW1 PBW2 PBW3 PBW4 Mean StdDev eMDL* eMDL 5x eMDL 250x eMDL 1000x Hg 0.0001 0.0002 0.0001 0.0001 0.0001 0.0000 0.0000 0.0001

- - Se(IV) 0.000 0.000 0.000 0.000 0.000 0.000 0.002

- 0.53 2.1 Se(VI) 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.29 1.2 SeCN 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0005

- 0.11 0.46 MeSe(IV) 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.31 1.2 SeMe 0.000 0.000 0.000 0.000 0.000 0.000 0.001

- 0.31 1.2 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 1580 100.8 Se(IV) LCS 4.79 4.92 102.8 Se(VI) LCS 4.74 4.74 100.0 SeCN LCS 4.46 4.52 101.2 MeSe(IV) LCS 3.24 3.24 100.0 SeMe LCS 4.66 4.56 97.9 Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen - FGD WWTS (Bi-Monthly Routine)

Contact: Jay Perkins LIMS #J13070407 Date: August 7, 2013 Report Generated by: Ben Wozniak

### Quality Control Summary - Matrix Duplicates

Analyte (μg/L) Sample ID Rep 1 Rep 2 Mean RPD Hg Batch QC 0.2046 0.2025 0.2036 1.0 Se(IV) Batch QC 834.0 809.2 821.6 3.0 Se(VI) Batch QC 34.9 31.9 33.4 9.0 SeCN Batch QC 37.67 35.44 36.55 6.1 MeSe(IV) Batch QC 1.6 1.5 1.5 0.9 SeMe Batch QC ND (< 1.2) ND (< 1.2) 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 2.490 114.3 2.000 2.531 116.4 1.6 Se(IV) Batch QC 5560 6691 105.6 5560 6599 103.9 1.4 Se(VI) Batch QC 5045 4945 97.4 5045 4865 95.8 1.6 SeCN Batch QC 4575 4079 88.4 4575 3988 86.4 2.3 Applied Speciation and Consulting, LLC Total Mercury & Selenium Speciation Results for Duke Energy Project Name: Allen - FGD WWTS (Bi-Monthly Routine)

Contact: Jay Perkins LIMS #J13070407 Date: August 7, 2013 Report Generated by: Ben Wozniak