Your Project #: 902637 

Site: NRG ENERGY-VIENNA PLANT

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/31

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B026958

Received: 2010/03/03, 20:30

Sample Matrix: Stack Sampling Train

# Samples Received: 4

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

Dioxins/Furans in Air (Method 23) (1 ) 4 2010/03/12 2010/03/22 BRL SOP-00404 EPA1613Bmod(M23/23A)

PCB Congeners in Air (1668A) 4 2010/03/12 2010/03/16 BRL SOP-00408, 409 EPA 1668A (0010) mod

* RPDs calculated using raw data. The rounding of final results may result in the apparent difference.

(1) This test was performed in Maxxam Mississauga under Maxxam Burlington SCC Accreditation

U = Undetected at the limit of quantitation.

J = Estimated concentration between the EDL & RDL.

B = Blank Contamination.

Q = One or more quality control criteria failed.

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. For Service Group specific validation please refer to the Validation Signature Page.

Total cover pages: 1

Page 1 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Maxxam ID F G 4 3 8 3

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s REAGENT EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

BLANK-DF/PCB

PCBs

33'44'-TetraCB-(77) ng 0.0066 U 0.0066 0.20 0.00010 0.00000066 2098909

344'5-TetraCB-(81) ng 0.0036 U 0.0036 0.20 0.00030 0.0000011 2098909

233'44'-PentaCB-(105) ng 0.010 J 0.0038 0.20 0.000030 0.00000030 2098909

2344'5-PentaCB-(114) ng 0.0038 U 0.0038 0.20 0.000030 0.00000011 2098909

23'44'5-PentaCB-(118) ng 0.039 U 0.039 0.20 0.000030 0.0000012 2098909

23'44'5'-PentaCB-(123) ng 0.0038 U 0.0038 0.20 0.000030 0.00000011 2098909

33'44'5-PentaCB-(126) ng 0.0038 U 0.0038 0.20 0.10 0.00038 2098909

HexaCB-(156)+(157) ng 0.0070 U 0.0070 0.40 0.000030 0.00000021 2098909

23'44'55'-HexaCB-(167) ng 0.0039 U 0.0039 0.20 0.000030 0.00000012 2098909

33'44'55'-HexaCB-(169) ng 0.0041 U 0.0041 0.20 0.030 0.00012 2098909

233'44'55'-HeptaCB-(189) ng 0.0036 U 0.0036 0.20 0.000030 0.00000011 2098909

TOTAL TOXIC EQUIVALENCY ng 0.00050

Surrogate Recovery (%)

C13-233'44'55'-HeptaCB-(189) % 118 2098909

C13-233'44'5-HexaCB-(156) % 136 2098909

C13-233'44'5'-HexaCB-(157) % 136 2098909

C13-233'44'-PentaCB-(105) % 146 2098909

C13-23'44'55'-HexaCB-(167) % 143 2098909

C13-2344'5-PentaCB-(114) % 145 2098909

C13-23'44'5-PentaCB-(118) % 147 2098909

C13-2'344'5-PentaCB-(123) % 149 2098909

C13-33'44'55'-HexaCB-(169) % 142 2098909

C13-33'44'5-PentaCB-(126) % 151 ( 1 ) 2098909

C13-33'44'-TetraCB-(77) % 138 2098909

C13-344'5-TetraCB-(81) % 136 2098909

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets

acceptability criteria.

Page 2 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Maxxam ID F G 4 3 8 4

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

1-VIENNA

8-DF/PCB

PCBs

33'44'-TetraCB-(77) ng 0.017 U 0.017 0.20 0.00010 0.0000017 2098909

344'5-TetraCB-(81) ng 0.0026 U 0.0026 0.20 0.00030 0.00000078 2098909

233'44'-PentaCB-(105) ng 0.022 U 0.022 0.20 0.000030 0.00000066 2098909

2344'5-PentaCB-(114) ng 0.0058 U 0.0058 0.20 0.000030 0.00000017 2098909

23'44'5-PentaCB-(118) ng 0.077 J 0.0056 0.20 0.000030 0.0000023 2098909

23'44'5'-PentaCB-(123) ng 0.0059 U 0.0059 0.20 0.000030 0.00000018 2098909

33'44'5-PentaCB-(126) ng 0.0058 U 0.0058 0.20 0.10 0.00058 2098909

HexaCB-(156)+(157) ng 0.011 J 0.0031 0.40 0.000030 0.00000033 2098909

23'44'55'-HexaCB-(167) ng 0.0040 U 0.0040 0.20 0.000030 0.00000012 2098909

33'44'55'-HexaCB-(169) ng 0.0032 U 0.0032 0.20 0.030 0.000096 2098909

233'44'55'-HeptaCB-(189) ng 0.0032 U 0.0032 0.20 0.000030 0.000000096 2098909

TOTAL TOXIC EQUIVALENCY ng 0.00068

Surrogate Recovery (%)

C13-233'44'55'-HeptaCB-(189) % 119 2098909

C13-233'44'5-HexaCB-(156) % 125 2098909

C13-233'44'5'-HexaCB-(157) % 125 2098909

C13-233'44'-PentaCB-(105) % 145 2098909

C13-23'44'55'-HexaCB-(167) % 132 2098909

C13-2344'5-PentaCB-(114) % 145 2098909

C13-23'44'5-PentaCB-(118) % 142 2098909

C13-2'344'5-PentaCB-(123) % 144 2098909

C13-33'44'55'-HexaCB-(169) % 123 2098909

C13-33'44'5-PentaCB-(126) % 148 2098909

C13-33'44'-TetraCB-(77) % 140 2098909

C13-344'5-TetraCB-(81) % 142 2098909

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 3 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Maxxam ID F G 4 3 8 5

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

2-VIENNA

8-DF/PCB

PCBs

33'44'-TetraCB-(77) ng 0.016 J 0.0053 0.20 0.00010 0.0000016 2098909

344'5-TetraCB-(81) ng 0.0052 U 0.0052 0.20 0.00030 0.0000016 2098909

233'44'-PentaCB-(105) ng 0.038 J 0.0029 0.20 0.000030 0.0000011 2098909

2344'5-PentaCB-(114) ng 0.0046 J 0.0029 0.20 0.000030 0.00000014 2098909

23'44'5-PentaCB-(118) ng 0.11 J 0.0028 0.20 0.000030 0.0000033 2098909

23'44'5'-PentaCB-(123) ng 0.0029 U 0.0029 0.20 0.000030 0.000000087 2098909

33'44'5-PentaCB-(126) ng 0.0029 U 0.0029 0.20 0.10 0.00029 2098909

HexaCB-(156)+(157) ng 0.014 J 0.0051 0.40 0.000030 0.00000042 2098909

23'44'55'-HexaCB-(167) ng 0.0050 U 0.0050 0.20 0.000030 0.00000015 2098909

33'44'55'-HexaCB-(169) ng 0.0052 U 0.0052 0.20 0.030 0.00016 2098909

233'44'55'-HeptaCB-(189) ng 0.0049 U 0.0049 0.20 0.000030 0.00000015 2098909

TOTAL TOXIC EQUIVALENCY ng 0.00046

Surrogate Recovery (%)

C13-233'44'55'-HeptaCB-(189) % 121 2098909

C13-233'44'5-HexaCB-(156) % 129 2098909

C13-233'44'5'-HexaCB-(157) % 129 2098909

C13-233'44'-PentaCB-(105) % 146 2098909

C13-23'44'55'-HexaCB-(167) % 134 2098909

C13-2344'5-PentaCB-(114) % 149 2098909

C13-23'44'5-PentaCB-(118) % 146 2098909

C13-2'344'5-PentaCB-(123) % 149 2098909

C13-33'44'55'-HexaCB-(169) % 123 2098909

C13-33'44'5-PentaCB-(126) % 149 2098909

C13-33'44'-TetraCB-(77) % 148 2098909

C13-344'5-TetraCB-(81) % 146 2098909

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 4 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Maxxam ID F G 4 3 8 6

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

3-VIENNA

8-DF/PCB

PCBs

33'44'-TetraCB-(77) ng 0.015 J 0.0036 0.20 0.00010 0.0000015 2098909

344'5-TetraCB-(81) ng 0.0035 U 0.0035 0.20 0.00030 0.0000011 2098909

233'44'-PentaCB-(105) ng 0.038 J 0.0035 0.20 0.000030 0.0000011 2098909

2344'5-PentaCB-(114) ng 0.0040 U 0.0040 0.20 0.000030 0.00000012 2098909

23'44'5-PentaCB-(118) ng 0.11 J 0.0034 0.20 0.000030 0.0000033 2098909

23'44'5'-PentaCB-(123) ng 0.0035 U 0.0035 0.20 0.000030 0.00000011 2098909

33'44'5-PentaCB-(126) ng 0.0035 U 0.0035 0.20 0.10 0.00035 2098909

HexaCB-(156)+(157) ng 0.018 J 0.0031 0.40 0.000030 0.00000054 2098909

23'44'55'-HexaCB-(167) ng 0.0078 J 0.0030 0.20 0.000030 0.00000023 2098909

33'44'55'-HexaCB-(169) ng 0.0032 U 0.0032 0.20 0.030 0.000096 2098909

233'44'55'-HeptaCB-(189) ng 0.0031 U 0.0031 0.20 0.000030 0.000000093 2098909

TOTAL TOXIC EQUIVALENCY ng 0.00045

Surrogate Recovery (%)

C13-233'44'55'-HeptaCB-(189) % 128 2098909

C13-233'44'5-HexaCB-(156) % 134 2098909

C13-233'44'5'-HexaCB-(157) % 134 2098909

C13-233'44'-PentaCB-(105) % 146 2098909

C13-23'44'55'-HexaCB-(167) % 138 2098909

C13-2344'5-PentaCB-(114) % 144 2098909

C13-23'44'5-PentaCB-(118) % 145 2098909

C13-2'344'5-PentaCB-(123) % 147 2098909

C13-33'44'55'-HexaCB-(169) % 129 2098909

C13-33'44'5-PentaCB-(126) % 151 ( 1 ) 2098909

C13-33'44'-TetraCB-(77) % 147 2098909

C13-344'5-TetraCB-(81) % 153 ( 1 ) 2098909

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets

acceptability criteria.

Page 5 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 3

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s REAGENT EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

BLANK-DF/PCB

Dioxins & Furans

2,3,7,8-Tetra CDD * pg 1.6 U 1.6 30 1.00 1.60 2101686

1,2,3,7,8-Penta CDD pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,4,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,6,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,7,8,9-Hexa CDD pg 1.6 U 1.6 30 0.100 0.160 2101686

1,2,3,4,6,7,8-Hepta CDD pg 8.9 J 1.6 30 0.0100 0.0890 2101686

1,2,3,4,6,7,8,9-Octa CDD pg 20.9 J 3.5 300 0.000300 0.00627 2101686

Total Tetra CDD pg 1.6 U 1.6 30 2101686

Total Penta CDD pg 1.7 U 1.7 30 2101686

Total Hexa CDD pg 2.4 J 1.7 30 2101686

Total Hepta CDD pg 17.4 J 1.6 30 2101686

2,3,7,8-Tetra CDF ** pg 4.3 J 1.7 30 0.100 0.430 2101686

1,2,3,7,8-Penta CDF pg 1.8 U 1.8 30 0.0300 0.0540 2101686

2,3,4,7,8-Penta CDF pg 3.5 U ( 1 ) 3.5 30 0.300 1.05 2101686

1,2,3,4,7,8-Hexa CDF pg 1.6 J 1.6 30 0.100 0.160 2101686

1,2,3,6,7,8-Hexa CDF pg 1.5 U 1.5 30 0.100 0.150 2101686

2,3,4,6,7,8-Hexa CDF pg 3.6 J 1.9 30 0.100 0.360 2101686

1,2,3,7,8,9-Hexa CDF pg 1.9 U 1.9 30 0.100 0.190 2101686

1,2,3,4,6,7,8-Hepta CDF pg 7.4 U ( 1 ) 7.4 30 0.0100 0.0740 2101686

1,2,3,4,7,8,9-Hepta CDF pg 2.0 U 2.0 30 0.0100 0.0200 2101686

1,2,3,4,6,7,8,9-Octa CDF pg 4.3 J 3.2 300 0.000300 0.00129 2101686

Total Tetra CDF pg 12.4 J 1.7 30 2101686

Total Penta CDF pg 5.7 J 1.8 30 2101686

Total Hexa CDF pg 10.4 J 1.7 30 2101686

Total Hepta CDF pg 8.6 U ( 1 ) 8.6 30 2101686

Toxic Equivalency pg 1.7 U 1.7 N/A 2101686

TOTAL TOXIC EQUIVALENCY pg 6 . 3 8

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit.

Page 6 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 3

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s REAGENT EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

BLANK-DF/PCB

Surrogate Recovery (%)

C13-1234678 HeptaCDD * % 89 2101686

C13-1234678 HeptaCDF ** % 87 2101686

C13-123478 HexaCDD % 88 2101686

C13-123478 HexaCDF % 103 2101686

C13-1234789 HeptaCDF % 93 2101686

C13-123678 HexaCDD % 104 2101686

C13-123678 HexaCDF % 88 2101686

C13-12378 PentaCDD % 97 2101686

C13-12378 PentaCDF % 87 2101686

C13-123789 HexaCDF % 87 2101686

C13-23478 PentaCDF % 102 2101686

C13-2378 TetraCDD % 70 2101686

C13-2378 TetraCDF % 68 2101686

C13-Octachlorodibenzo-p-Dioxin % 89 2101686

Cl37-2378 TetraCDD % 96 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 7 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 4

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

1-VIENNA

8-DF/PCB

Dioxins & Furans

2,3,7,8-Tetra CDD * pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,7,8-Penta CDD pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,4,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,6,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,7,8,9-Hexa CDD pg 1.6 U 1.6 30 0.100 0.160 2101686

1,2,3,4,6,7,8-Hepta CDD pg 6.8 J 1.6 30 0.0100 0.0680 2101686

1,2,3,4,6,7,8,9-Octa CDD pg 34.3 J 3.6 300 0.000300 0.0103 2101686

Total Tetra CDD pg 1.8 J 1.7 30 2101686

Total Penta CDD pg 1.7 U 1.7 30 2101686

Total Hexa CDD pg 2.0 J 1.6 30 2101686

Total Hepta CDD pg 13.4 J 1.6 30 2101686

2,3,7,8-Tetra CDF ** pg 11.7 J 1.7 30 0.100 1.17 2101686

1,2,3,7,8-Penta CDF pg 1.8 U 1.8 30 0.0300 0.0540 2101686

2,3,4,7,8-Penta CDF pg 4.0 J 1.8 30 0.300 1.20 2101686

1,2,3,4,7,8-Hexa CDF pg 2.3 J 1.7 30 0.100 0.230 2101686

1,2,3,6,7,8-Hexa CDF pg 1.9 J 1.5 30 0.100 0.190 2101686

2,3,4,6,7,8-Hexa CDF pg 3.0 J 1.9 30 0.100 0.300 2101686

1,2,3,7,8,9-Hexa CDF pg 1.9 U 1.9 30 0.100 0.190 2101686

1,2,3,4,6,7,8-Hepta CDF pg 6.3 U ( 1 ) 6.3 30 0.0100 0.0630 2101686

1,2,3,4,7,8,9-Hepta CDF pg 2.1 U 2.1 30 0.0100 0.0210 2101686

1,2,3,4,6,7,8,9-Octa CDF pg 8.4 J 3.1 300 0.000300 0.00252 2101686

Total Tetra CDF pg 23.1 J 1.7 30 2101686

Total Penta CDF pg 17.4 J 1.8 30 2101686

Total Hexa CDF pg 13.6 J 1.7 30 2101686

Total Hepta CDF pg 7.3 U ( 1 ) 7.3 30 2101686

Toxic Equivalency pg 4.0 1.7 N/A 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit.

Page 8 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 4

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

1-VIENNA

8-DF/PCB

TOTAL TOXIC EQUIVALENCY pg 7 . 4 0

Surrogate Recovery (%)

C13-1234678 HeptaCDD * % 92 2101686

C13-1234678 HeptaCDF ** % 87 2101686

C13-123478 HexaCDD % 90 2101686

C13-123478 HexaCDF % 107 2101686

C13-1234789 HeptaCDF % 94 2101686

C13-123678 HexaCDD % 96 2101686

C13-123678 HexaCDF % 78 2101686

C13-12378 PentaCDD % 90 2101686

C13-12378 PentaCDF % 80 2101686

C13-123789 HexaCDF % 85 2101686

C13-23478 PentaCDF % 103 2101686

C13-2378 TetraCDD % 60 2101686

C13-2378 TetraCDF % 57 2101686

C13-Octachlorodibenzo-p-Dioxin % 94 2101686

Cl37-2378 TetraCDD % 96 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 9 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 5

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

2-VIENNA

8-DF/PCB

Dioxins & Furans

2,3,7,8-Tetra CDD * pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,7,8-Penta CDD pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,4,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,6,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,7,8,9-Hexa CDD pg 1.6 U 1.6 30 0.100 0.160 2101686

1,2,3,4,6,7,8-Hepta CDD pg 4.0 J 1.8 30 0.0100 0.0400 2101686

1,2,3,4,6,7,8,9-Octa CDD pg 13.6 J 3.1 300 0.000300 0.00408 2101686

Total Tetra CDD pg 2.3 J 1.7 30 2101686

Total Penta CDD pg 1.7 U 1.7 30 2101686

Total Hexa CDD pg 2.8 U ( 1 ) 2.8 30 2101686

Total Hepta CDD pg 7.4 J 1.8 30 2101686

2,3,7,8-Tetra CDF ** pg 10.2 J 1.7 30 0.100 1.02 2101686

1,2,3,7,8-Penta CDF pg 1.7 U 1.7 30 0.0300 0.0510 2101686

2,3,4,7,8-Penta CDF pg 3.8 U ( 1 ) 3.8 30 0.300 1.14 2101686

1,2,3,4,7,8-Hexa CDF pg 2.1 J 1.7 30 0.100 0.210 2101686

1,2,3,6,7,8-Hexa CDF pg 1.5 U 1.5 30 0.100 0.150 2101686

2,3,4,6,7,8-Hexa CDF pg 2.4 J 1.9 30 0.100 0.240 2101686

1,2,3,7,8,9-Hexa CDF pg 1.9 U 1.9 30 0.100 0.190 2101686

1,2,3,4,6,7,8-Hepta CDF pg 3.8 U ( 1 ) 3.8 30 0.0100 0.0380 2101686

1,2,3,4,7,8,9-Hepta CDF pg 2.1 U 2.1 30 0.0100 0.0210 2101686

1,2,3,4,6,7,8,9-Octa CDF pg 5.1 J 3.1 300 0.000300 0.00153 2101686

Total Tetra CDF pg 35 1.7 30 2101686

Total Penta CDF pg 7.4 J 1.7 30 2101686

Total Hexa CDF pg 8.1 J 1.7 30 2101686

Total Hepta CDF pg 4.4 U ( 1 ) 4.4 30 2101686

Toxic Equivalency pg 1.7 U 1.7 N/A 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit.

Page 10 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 5

Sampling Date 2010/02/23 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

2-VIENNA

8-DF/PCB

TOTAL TOXIC EQUIVALENCY pg 7 . 0 1

Surrogate Recovery (%)

C13-1234678 HeptaCDD * % 92 2101686

C13-1234678 HeptaCDF ** % 89 2101686

C13-123478 HexaCDD % 86 2101686

C13-123478 HexaCDF % 105 2101686

C13-1234789 HeptaCDF % 92 2101686

C13-123678 HexaCDD % 97 2101686

C13-123678 HexaCDF % 78 2101686

C13-12378 PentaCDD % 85 2101686

C13-12378 PentaCDF % 77 2101686

C13-123789 HexaCDF % 86 2101686

C13-23478 PentaCDF % 101 2101686

C13-2378 TetraCDD % 58 2101686

C13-2378 TetraCDF % 55 2101686

C13-Octachlorodibenzo-p-Dioxin % 100 2101686

Cl37-2378 TetraCDD % 94 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 11 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 6

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

3-VIENNA

8-DF/PCB

Dioxins & Furans

2,3,7,8-Tetra CDD * pg 1.6 U 1.6 30 1.00 1.60 2101686

1,2,3,7,8-Penta CDD pg 1.7 U 1.7 30 1.00 1.70 2101686

1,2,3,4,7,8-Hexa CDD pg 1.8 U 1.8 30 0.100 0.180 2101686

1,2,3,6,7,8-Hexa CDD pg 1.7 U 1.7 30 0.100 0.170 2101686

1,2,3,7,8,9-Hexa CDD pg 1.6 U 1.6 30 0.100 0.160 2101686

1,2,3,4,6,7,8-Hepta CDD pg 6.8 J 1.6 30 0.0100 0.0680 2101686

1,2,3,4,6,7,8,9-Octa CDD pg 23 U ( 1 ) 23 300 0.000300 0.00690 2101686

Total Tetra CDD pg 8.8 J 1.6 30 2101686

Total Penta CDD pg 1.9 J 1.7 30 2101686

Total Hexa CDD pg 2.1 J 1.7 30 2101686

Total Hepta CDD pg 14.1 J 1.6 30 2101686

2,3,7,8-Tetra CDF ** pg 14.6 J 1.7 30 0.100 1.46 2101686

1,2,3,7,8-Penta CDF pg 3.6 J 1.7 30 0.0300 0.108 2101686

2,3,4,7,8-Penta CDF pg 5.8 J 1.6 30 0.300 1.74 2101686

1,2,3,4,7,8-Hexa CDF pg 3.2 J 1.6 30 0.100 0.320 2101686

1,2,3,6,7,8-Hexa CDF pg 2.9 J 1.5 30 0.100 0.290 2101686

2,3,4,6,7,8-Hexa CDF pg 4.5 J 1.8 30 0.100 0.450 2101686

1,2,3,7,8,9-Hexa CDF pg 1.9 U 1.9 30 0.100 0.190 2101686

1,2,3,4,6,7,8-Hepta CDF pg 9.4 U ( 1 ) 9.4 30 0.0100 0.0940 2101686

1,2,3,4,7,8,9-Hepta CDF pg 2.0 U 2.0 30 0.0100 0.0200 2101686

1,2,3,4,6,7,8,9-Octa CDF pg 6.5 J 3.3 300 0.000300 0.00195 2101686

Total Tetra CDF pg 67 1.7 30 2101686

Total Penta CDF pg 44 1.7 30 2101686

Total Hexa CDF pg 23.6 J 1.7 30 2101686

Total Hepta CDF pg 11 U ( 1 ) 11 30 2101686

Toxic Equivalency pg 5.7 1.7 N/A 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

( 1 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit.

Page 12 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

DIOXINS AND FURANS BY HRMS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 3 8 6

Sampling Date 2010/02/24 TOXIC EQUIVALENCY # of

 U n i t s TEST EDL RDL TEF (2005 WHO) TEQ(DL) I s o m e r s QC Batch

3-VIENNA

8-DF/PCB

TOTAL TOXIC EQUIVALENCY pg 8 . 5 6

Surrogate Recovery (%)

C13-1234678 HeptaCDD * % 91 2101686

C13-1234678 HeptaCDF ** % 87 2101686

C13-123478 HexaCDD % 90 2101686

C13-123478 HexaCDF % 105 2101686

C13-1234789 HeptaCDF % 92 2101686

C13-123678 HexaCDD % 95 2101686

C13-123678 HexaCDF % 79 2101686

C13-12378 PentaCDD % 88 2101686

C13-12378 PentaCDF % 79 2101686

C13-123789 HexaCDF % 83 2101686

C13-23478 PentaCDF % 107 2101686

C13-2378 TetraCDD % 62 2101686

C13-2378 TetraCDF % 58 2101686

C13-Octachlorodibenzo-p-Dioxin % 95 2101686

Cl37-2378 TetraCDD % 95 2101686

RDL = Reportable Detection Limit

EDL = Estimated Detection Limit

QC Batch = Quality Control Batch

* CDD = Chloro Dibenzo-p-Dioxin, ** CDF = Chloro Dibenzo-p-Furan

TEF = Toxic Equivalency Factor, TEQ = Toxic Equivalency Quotient,

The Total Toxic Equivalency (TEQ) value reported is the sum of Toxic Equivalent Quotients for the congeners tested.

WHO(2005): The 2005 World Health Organization, Human and Mammalian Toxic Equivalency Factors for Dioxins and

Dioxin-like Compounds

Page 13 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

Test Summary

Maxxam ID FG4383 Collected 2010/02/24

Sample ID REAGENT BLANK-DF/PCB Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Dioxins/Furans in Air (Method 23) HRMS/MS 2101686 2010/03/12 2010/03/22 KKS

PCB Congeners in Air (1668A) HRMS/MSEC 2098909 2010/03/12 2010/03/16 BY

Maxxam ID FG4384 Collected 2010/02/23

Sample ID TEST 1-VIENNA 8-DF/PCB Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Dioxins/Furans in Air (Method 23) HRMS/MS 2101686 2010/03/12 2010/03/22 KKS

PCB Congeners in Air (1668A) HRMS/MSEC 2098909 2010/03/12 2010/03/16 BY

Maxxam ID FG4385 Collected 2010/02/23

Sample ID TEST 2-VIENNA 8-DF/PCB Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Dioxins/Furans in Air (Method 23) HRMS/MS 2101686 2010/03/12 2010/03/22 KKS

PCB Congeners in Air (1668A) HRMS/MSEC 2098909 2010/03/12 2010/03/16 BY

Maxxam ID FG4386 Collected 2010/02/24

Sample ID TEST 3-VIENNA 8-DF/PCB Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Dioxins/Furans in Air (Method 23) HRMS/MS 2101686 2010/03/12 2010/03/22 KKS

PCB Congeners in Air (1668A) HRMS/MSEC 2098909 2010/03/12 2010/03/16 BY

Page 14 of 19
Eagle Mountain

Maxxam Job #: B026958 Client Project #: 902637

Report Date: 2010/03/31 Project name: NRG ENERGY-VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

PCB Congeners in Air (1668A): Some internal standard recoveries are high, possibly due to matrix effects.

Results relate only to the items tested.

Page 15 of 19
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY-VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB026958

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2098909 BY Spiked Blank C13-233'44'55'-HeptaCB-(189) 2010/03/16 133 % 20 - 150

Spiked Blank DUP C13-233'44'55'-HeptaCB-(189) 2010/03/16 126 % 20 - 150

Spiked Blank C13-233'44'5-HexaCB-(156) 2010/03/16 141 % 20 - 150

Spiked Blank DUP C13-233'44'5-HexaCB-(156) 2010/03/16 136 % 20 - 150

Spiked Blank C13-233'44'5'-HexaCB-(157) 2010/03/16 141 % 20 - 150

Spiked Blank DUP C13-233'44'5'-HexaCB-(157) 2010/03/16 136 % 20 - 150

Spiked Blank C13-233'44'-PentaCB-(105) 2010/03/16 153 ( 1 ) % 20 - 150

Spiked Blank DUP C13-233'44'-PentaCB-(105) 2010/03/16 144 % 20 - 150

Spiked Blank C13-23'44'55'-HexaCB-(167) 2010/03/16 137 % 20 - 150

Spiked Blank DUP C13-23'44'55'-HexaCB-(167) 2010/03/16 139 % 20 - 150

Spiked Blank C13-2344'5-PentaCB-(114) 2010/03/16 144 % 20 - 150

Spiked Blank DUP C13-2344'5-PentaCB-(114) 2010/03/16 136 % 20 - 150

Spiked Blank C13-23'44'5-PentaCB-(118) 2010/03/16 142 % 20 - 150

Spiked Blank DUP C13-23'44'5-PentaCB-(118) 2010/03/16 139 % 20 - 150

Spiked Blank C13-2'344'5-PentaCB-(123) 2010/03/16 150 % 20 - 150

Spiked Blank DUP C13-2'344'5-PentaCB-(123) 2010/03/16 137 % 20 - 150

Spiked Blank C13-33'44'55'-HexaCB-(169) 2010/03/16 140 % 20 - 150

Spiked Blank DUP C13-33'44'55'-HexaCB-(169) 2010/03/16 139 % 20 - 150

Spiked Blank C13-33'44'5-PentaCB-(126) 2010/03/16 154 ( 1 ) % 20 - 150

Spiked Blank DUP C13-33'44'5-PentaCB-(126) 2010/03/16 151 ( 1 ) % 20 - 150

Spiked Blank C13-33'44'-TetraCB-(77) 2010/03/16 142 % 20 - 150

Spiked Blank DUP C13-33'44'-TetraCB-(77) 2010/03/16 130 % 20 - 150

Spiked Blank C13-344'5-TetraCB-(81) 2010/03/16 144 % 20 - 150

Spiked Blank DUP C13-344'5-TetraCB-(81) 2010/03/16 120 % 20 - 150

Spiked Blank 33'44'-TetraCB-(77) 2010/03/16 111 % N/A

Spiked Blank DUP 33'44'-TetraCB-(77) 2010/03/16 115 % N/A

RPD 33'44'-TetraCB-(77) 2010/03/16 3.5 % 20

Spiked Blank 344'5-TetraCB-(81) 2010/03/16 112 % N/A

Spiked Blank DUP 344'5-TetraCB-(81) 2010/03/16 113 % N/A

RPD 344'5-TetraCB-(81) 2010/03/16 0.9 % 20

Spiked Blank 233'44'-PentaCB-(105) 2010/03/16 105 % N/A

Spiked Blank DUP 233'44'-PentaCB-(105) 2010/03/16 109 % N/A

RPD 233'44'-PentaCB-(105) 2010/03/16 3.7 % 20

Spiked Blank 2344'5-PentaCB-(114) 2010/03/16 105 % N/A

Spiked Blank DUP 2344'5-PentaCB-(114) 2010/03/16 111 % N/A

RPD 2344'5-PentaCB-(114) 2010/03/16 5.6 % 20

Spiked Blank 23'44'5-PentaCB-(118) 2010/03/16 109 % N/A

Spiked Blank DUP 23'44'5-PentaCB-(118) 2010/03/16 110 % N/A

RPD 23'44'5-PentaCB-(118) 2010/03/16 0.9 % 20

Spiked Blank 23'44'5'-PentaCB-(123) 2010/03/16 109 % N/A

Spiked Blank DUP 23'44'5'-PentaCB-(123) 2010/03/16 111 % N/A

RPD 23'44'5'-PentaCB-(123) 2010/03/16 1.8 % 20

Spiked Blank 33'44'5-PentaCB-(126) 2010/03/16 111 % N/A

Spiked Blank DUP 33'44'5-PentaCB-(126) 2010/03/16 112 % N/A

RPD 33'44'5-PentaCB-(126) 2010/03/16 0.9 % 20

Spiked Blank HexaCB-(156)+(157) 2010/03/16 107 % N/A

Spiked Blank DUP HexaCB-(156)+(157) 2010/03/16 111 % N/A

RPD HexaCB-(156)+(157) 2010/03/16 3.7 % 20

Spiked Blank 23'44'55'-HexaCB-(167) 2010/03/16 106 % N/A

Spiked Blank DUP 23'44'55'-HexaCB-(167) 2010/03/16 110 % N/A

RPD 23'44'55'-HexaCB-(167) 2010/03/16 3.7 % 20

Spiked Blank 33'44'55'-HexaCB-(169) 2010/03/16 108 % N/A

Spiked Blank DUP 33'44'55'-HexaCB-(169) 2010/03/16 111 % N/A

RPD 33'44'55'-HexaCB-(169) 2010/03/16 2.7 % 20

Spiked Blank 233'44'55'-HeptaCB-(189) 2010/03/16 96 % N/A

Page 16 of 19
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY-VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB026958

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2098909 BY Spiked Blank DUP 233'44'55'-HeptaCB-(189) 2010/03/16 106 % N/A

RPD 233'44'55'-HeptaCB-(189) 2010/03/16 9.9 % N/A

Method Blank C13-233'44'55'-HeptaCB-(189) 2010/03/16 130 % 20 - 150

C13-233'44'5-HexaCB-(156) 2010/03/16 139 % 20 - 150

C13-233'44'5'-HexaCB-(157) 2010/03/16 139 % 20 - 150

C13-233'44'-PentaCB-(105) 2010/03/16 146 % 20 - 150

C13-23'44'55'-HexaCB-(167) 2010/03/16 142 % 20 - 150

C13-2344'5-PentaCB-(114) 2010/03/16 142 % 20 - 150

C13-23'44'5-PentaCB-(118) 2010/03/16 148 % 20 - 150

C13-2'344'5-PentaCB-(123) 2010/03/16 148 % 20 - 150

C13-33'44'55'-HexaCB-(169) 2010/03/16 134 % 20 - 150

C13-33'44'5-PentaCB-(126) 2010/03/16 149 % 20 - 150

C13-33'44'-TetraCB-(77) 2010/03/16 134 % 20 - 150

C13-344'5-TetraCB-(81) 2010/03/16 133 % 20 - 150

33'44'-TetraCB-(77) 2010/03/16 0.0062 U, EDL=0.0062 ng

344'5-TetraCB-(81) 2010/03/16 0.0061 U, EDL=0.0061 ng

233'44'-PentaCB-(105) 2010/03/16 0.0043 J, EDL=0.0040 ng

2344'5-PentaCB-(114) 2010/03/16 0.0040 U, EDL=0.0040 ng

23'44'5-PentaCB-(118) 2010/03/16 0.015 U, EDL=0.015 ng

23'44'5'-PentaCB-(123) 2010/03/16 0.0041 U, EDL=0.0041 ng

33'44'5-PentaCB-(126) 2010/03/16 0.0040 U, EDL=0.0040 ng

HexaCB-(156)+(157) 2010/03/16 0.0039 J, EDL=0.0026 ng

23'44'55'-HexaCB-(167) 2010/03/16 0.0028 U, EDL=0.0028 ng

33'44'55'-HexaCB-(169) 2010/03/16 0.0026 U, EDL=0.0026 ng

233'44'55'-HeptaCB-(189) 2010/03/16 0.0025 U, EDL=0.0025 ng

2101686 KKS Spiked Blank C13-1234678 HeptaCDD 2010/03/21 91 % 25 - 130

Spiked Blank DUP C13-1234678 HeptaCDD 2010/03/21 87 % 25 - 130

Spiked Blank C13-1234678 HeptaCDF 2010/03/21 86 % 25 - 130

Spiked Blank DUP C13-1234678 HeptaCDF 2010/03/21 83 % 25 - 130

Spiked Blank C13-123678 HexaCDD 2010/03/21 92 % 40 - 130

Spiked Blank DUP C13-123678 HexaCDD 2010/03/21 90 % 40 - 130

Spiked Blank C13-123678 HexaCDF 2010/03/21 73 % 40 - 130

Spiked Blank DUP C13-123678 HexaCDF 2010/03/21 71 % 40 - 130

Spiked Blank C13-12378 PentaCDD 2010/03/21 87 % 40 - 130

Spiked Blank DUP C13-12378 PentaCDD 2010/03/21 87 % 40 - 130

Spiked Blank C13-12378 PentaCDF 2010/03/21 83 % 40 - 130

Spiked Blank DUP C13-12378 PentaCDF 2010/03/21 79 % 40 - 130

Spiked Blank C13-123789 HexaCDF 2010/03/21 91 % 40 - 130

Spiked Blank DUP C13-123789 HexaCDF 2010/03/21 85 % 40 - 130

Spiked Blank C13-2378 TetraCDD 2010/03/21 61 % 40 - 130

Spiked Blank DUP C13-2378 TetraCDD 2010/03/21 57 % 40 - 130

Spiked Blank C13-2378 TetraCDF 2010/03/21 68 % 40 - 130

Spiked Blank DUP C13-2378 TetraCDF 2010/03/21 59 % 40 - 130

Spiked Blank C13-Octachlorodibenzo-p-Dioxin 2010/03/21 102 % 25 - 130

Spiked Blank DUP C13-Octachlorodibenzo-p-Dioxin 2010/03/21 97 % 25 - 130

Spiked Blank 2,3,7,8-Tetra CDD 2010/03/21 98 % 80 - 140

Spiked Blank DUP 2,3,7,8-Tetra CDD 2010/03/21 91 % 80 - 140

RPD 2,3,7,8-Tetra CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,7,8-Penta CDD 2010/03/21 95 % 80 - 140

Spiked Blank DUP 1,2,3,7,8-Penta CDD 2010/03/21 93 % 80 - 140

RPD 1,2,3,7,8-Penta CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,7,8-Hexa CDD 2010/03/21 86 % 80 - 140

Spiked Blank DUP 1,2,3,4,7,8-Hexa CDD 2010/03/21 83 % 80 - 140

RPD 1,2,3,4,7,8-Hexa CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,6,7,8-Hexa CDD 2010/03/21 85 % 80 - 140

Page 17 of 19
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY-VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB026958

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2101686 KKS Spiked Blank DUP 1,2,3,6,7,8-Hexa CDD 2010/03/21 83 % 80 - 140

RPD 1,2,3,6,7,8-Hexa CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,7,8,9-Hexa CDD 2010/03/21 91 % 80 - 140

Spiked Blank DUP 1,2,3,7,8,9-Hexa CDD 2010/03/21 85 % 80 - 140

RPD 1,2,3,7,8,9-Hexa CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,6,7,8-Hepta CDD 2010/03/21 88 % 80 - 140

Spiked Blank DUP 1,2,3,4,6,7,8-Hepta CDD 2010/03/21 87 % 80 - 140

RPD 1,2,3,4,6,7,8-Hepta CDD 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,6,7,8,9-Octa CDD 2010/03/21 93 % 80 - 140

Spiked Blank DUP 1,2,3,4,6,7,8,9-Octa CDD 2010/03/21 90 % 80 - 140

RPD 1,2,3,4,6,7,8,9-Octa CDD 2010/03/21 NC % 20

Spiked Blank 2,3,7,8-Tetra CDF 2010/03/21 98 % 80 - 140

Spiked Blank DUP 2,3,7,8-Tetra CDF 2010/03/21 91 % 80 - 140

RPD 2,3,7,8-Tetra CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,7,8-Penta CDF 2010/03/21 98 % 80 - 140

Spiked Blank DUP 1,2,3,7,8-Penta CDF 2010/03/21 94 % 80 - 140

RPD 1,2,3,7,8-Penta CDF 2010/03/21 NC % 20

Spiked Blank 2,3,4,7,8-Penta CDF 2010/03/21 96 % 80 - 140

Spiked Blank DUP 2,3,4,7,8-Penta CDF 2010/03/21 97 % 80 - 140

RPD 2,3,4,7,8-Penta CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,7,8-Hexa CDF 2010/03/21 98 % 80 - 140

Spiked Blank DUP 1,2,3,4,7,8-Hexa CDF 2010/03/21 97 % 80 - 140

RPD 1,2,3,4,7,8-Hexa CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,6,7,8-Hexa CDF 2010/03/21 96 % 80 - 140

Spiked Blank DUP 1,2,3,6,7,8-Hexa CDF 2010/03/21 96 % 80 - 140

RPD 1,2,3,6,7,8-Hexa CDF 2010/03/21 NC % 20

Spiked Blank 2,3,4,6,7,8-Hexa CDF 2010/03/21 112 % 80 - 140

Spiked Blank DUP 2,3,4,6,7,8-Hexa CDF 2010/03/21 108 % 80 - 140

RPD 2,3,4,6,7,8-Hexa CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,7,8,9-Hexa CDF 2010/03/21 116 % 80 - 140

Spiked Blank DUP 1,2,3,7,8,9-Hexa CDF 2010/03/21 105 % 80 - 140

RPD 1,2,3,7,8,9-Hexa CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,6,7,8-Hepta CDF 2010/03/21 91 % 80 - 140

Spiked Blank DUP 1,2,3,4,6,7,8-Hepta CDF 2010/03/21 90 % 80 - 140

RPD 1,2,3,4,6,7,8-Hepta CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,7,8,9-Hepta CDF 2010/03/21 94 % 80 - 140

Spiked Blank DUP 1,2,3,4,7,8,9-Hepta CDF 2010/03/21 89 % 80 - 140

RPD 1,2,3,4,7,8,9-Hepta CDF 2010/03/21 NC % 20

Spiked Blank 1,2,3,4,6,7,8,9-Octa CDF 2010/03/21 84 % 80 - 140

Spiked Blank DUP 1,2,3,4,6,7,8,9-Octa CDF 2010/03/21 82 % 80 - 140

RPD 1,2,3,4,6,7,8,9-Octa CDF 2010/03/21 NC % 20

Method Blank C13-1234678 HeptaCDD 2010/03/21 90 % 25 - 130

C13-1234678 HeptaCDF 2010/03/21 87 % 25 - 130

C13-123678 HexaCDD 2010/03/21 95 % 40 - 130

C13-123678 HexaCDF 2010/03/21 75 % 40 - 130

C13-12378 PentaCDD 2010/03/21 86 % 40 - 130

C13-12378 PentaCDF 2010/03/21 78 % 40 - 130

C13-123789 HexaCDF 2010/03/21 82 % 40 - 130

C13-2378 TetraCDD 2010/03/21 57 % 40 - 130

C13-2378 TetraCDF 2010/03/21 59 % 40 - 130

C13-Octachlorodibenzo-p-Dioxin 2010/03/21 98 % 25 - 130

2,3,7,8-Tetra CDD 2010/03/21 1.8 U, EDL=1.8 pg

1,2,3,7,8-Penta CDD 2010/03/21 1.6 U, EDL=1.6 pg

1,2,3,4,7,8-Hexa CDD 2010/03/21 1.8 U, EDL=1.8 pg

1,2,3,6,7,8-Hexa CDD 2010/03/21 1.8 U, EDL=1.8 pg

Page 18 of 19
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY-VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB026958

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2101686 KKS Method Blank 1,2,3,7,8,9-Hexa CDD 2010/03/21 1.7 U, EDL=1.7 pg

1,2,3,4,6,7,8-Hepta CDD 2010/03/21 1.7 U, EDL=1.7 pg

1,2,3,4,6,7,8,9-Octa CDD 2010/03/21 3.3 U, EDL=3.3 pg

Total Tetra CDD 2010/03/21 1.8 U, EDL=1.8 pg

Total Penta CDD 2010/03/21 1.6 U, EDL=1.6 pg

Total Hexa CDD 2010/03/21 1.8 U, EDL=1.8 pg

Total Hepta CDD 2010/03/21 1.7 U, EDL=1.7 pg

2,3,7,8-Tetra CDF 2010/03/21 2.3 J, EDL=1.6 pg

1,2,3,7,8-Penta CDF 2010/03/21 1.8 U, EDL=1.8 pg

2,3,4,7,8-Penta CDF 2010/03/21 1.8 U, EDL=1.8 ( 2 ) pg

1,2,3,4,7,8-Hexa CDF 2010/03/21 1.7 U, EDL=1.7 pg

1,2,3,6,7,8-Hexa CDF 2010/03/21 1.5 U, EDL=1.5 pg

2,3,4,6,7,8-Hexa CDF 2010/03/21 1.9 U, EDL=1.9 pg

1,2,3,7,8,9-Hexa CDF 2010/03/21 1.9 U, EDL=1.9 pg

1,2,3,4,6,7,8-Hepta CDF 2010/03/21 1.5 U, EDL=1.5 pg

1,2,3,4,7,8,9-Hepta CDF 2010/03/21 2.0 U, EDL=2.0 pg

1,2,3,4,6,7,8,9-Octa CDF 2010/03/21 3.4 U, EDL=3.4 pg

Total Tetra CDF 2010/03/21 7.0 J, EDL=1.6 pg

Total Penta CDF 2010/03/21 1.8 U, EDL=1.8 ( 2 ) pg

Total Hexa CDF 2010/03/21 1.7 U, EDL=1.7 pg

Total Hepta CDF 2010/03/21 1.7 U, EDL=1.7 pg

Toxic Equivalency 2010/03/21 1.6 U, EDL=1.6 pg

Duplicate: Paired analysis of a separate portion of the same sample. Used to evaluate the variance in the measurement.

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

Surrogate: A pure or isotopically labeled compound whose behavior mirrors the analytes of interest. Used to evaluate extraction efficiency.

NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a

reliable calculation.

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets acceptability criteria.

( 2 ) EMPC / NDR - Peak detected does not meet ratio criteria and has resulted in an elevated detection limit.

Page 19 of 19
Your Project #: 902637 

Site: NRG ENERGY INC. VIENNA PLANT

Your C.O.C. #: N/A

Attention: Mark Carlson

Eagle Mountain Scientific Inc

321 Perry Hwy

Harmony, PA

USA 16037

Report Date: 2010/03/25

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B029231

Received: 2010/03/11, 11:45

Sample Matrix: Stack Sampling Train

# Samples Received: 4

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

Metals B.H. in H2O2/HNO3 Imp.(6020) (1 ) 4 2010/03/23 2010/03/24 BRL SOP-00103 / BRL EPA 6020 / M29 

SOP-00102

Metals F.H. in Filter + Rinses (6020) (1 ) 4 2010/03/23 2010/03/24 BRL SOP-00103/ BRL EPA 6020 / M29 

SOP-00102

(1) This test was performed in Maxxam Mississauga under Maxxam Burlington SCC Accreditation

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. For Service Group specific validation please refer to the Validation Signature Page.

Total cover pages: 1

Page 1 of 8
Eagle Mountain Scientific Inc

Maxxam Job #: B029231 Client Project #: 902637

Report Date: 2010/03/25 Project name: NRG ENERGY INC. VIENNA PLANT

ELEMENTS BY ICP/MS (STACK SAMPLING TRAIN)

Maxxam ID F H 5 4 5 7 F H 5 4 5 8 F H 5 4 5 9 F H 5 4 6 0

Sampling Date 2010/02/23 2010/02/23 2010/02/23 2010/02/23

COC Number N/A N/A N/A N/A

 U n i t s BLANK-M29 RDL RUN 1-M29 RUN 2-M29 RUN 3-M29 RDL QC Batch

Metals

Back Half Antimony (Sb) ug <0.20 0.20 <4.0 <4.0 <4.0 4.0 2106659

Front Half Antimony (Sb) ug <0.40 0.40 194 181 184 2.0 2106560

Back Half Arsenic (As) ug <0.20 0.20 <4.0 <4.0 <4.0 4.0 2106659

Front Half Arsenic (As) ug <0.40 0.40 21.5 16.3 17.1 2.0 2106560

Back Half Beryllium (Be) ug <0.050 0.050 <1.0 <1.0 <1.0 1.0 2106659

Front Half Beryllium (Be) ug <0.10 0.10 1.25 1.23 1.28 0.50 2106560

Back Half Cadmium (Cd) ug <0.050 0.050 <1.0 <1.0 <1.0 1.0 2106659

Front Half Cadmium (Cd) ug <0.10 0.10 <0.50 <0.50 <0.50 0.50 2106560

Back Half Chromium (Cr) ug 0.21 0.15 74.7 <3.0 6.1 3.0 2106659

Front Half Chromium (Cr) ug 1.22 0.30 14.9 8.9 42.2 1.5 2106560

Back Half Cobalt (Co) ug <0.050 0.050 5.0 <1.0 <1.0 1.0 2106659

Front Half Cobalt (Co) ug <0.10 0.10 116 93.6 108 0.50 2106560

Back Half Lead (Pb) ug 0.21 0.10 <2.0 <2.0 <2.0 2.0 2106659

Front Half Lead (Pb) ug 0.22 0.20 38.3 33.8 37.0 1.0 2106560

Back Half Manganese (Mn) ug <0.25 0.25 26.1 6.3 <5.0 5.0 2106659

Front Half Manganese (Mn) ug 0.86 0.75 138 107 163 3.8 2106560

Back Half Nickel (Ni) ug <0.25 0.25 138 <5.0 <5.0 5.0 2106659

Front Half Nickel (Ni) ug 0.74 0.50 5170 4460 5030 2.5 2106560

Back Half Selenium (Se) ug <0.50 0.50 <10 12 13 10 2106659

Front Half Selenium (Se) ug <1.0 1.0 6.1 <5.0 <5.0 5.0 2106560

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 8
Eagle Mountain Scientific Inc

Maxxam Job #: B029231 Client Project #: 902637

Report Date: 2010/03/25 Project name: NRG ENERGY INC. VIENNA PLANT

Test Summary

Maxxam ID FH5457 Collected 2010/02/23

Sample ID BLANK-M29 Shipped

Matrix Stack Sampling Train Received 2010/03/11

Test Description Instrumentation Batch Extracted Analyzed Analyst

Metals B.H. in H2O2/HNO3 Imp.(6020) ICP1/MS 2106659 2010/03/23 2010/03/24 N_R

Metals F.H. in Filter + Rinses (6020) ICP1/MS 2106560 2010/03/23 2010/03/24 N_R

Maxxam ID FH5458 Collected 2010/02/23

Sample ID RUN 1-M29 Shipped

Matrix Stack Sampling Train Received 2010/03/11

Test Description Instrumentation Batch Extracted Analyzed Analyst

Metals B.H. in H2O2/HNO3 Imp.(6020) ICP1/MS 2106659 2010/03/23 2010/03/24 N_R

Metals F.H. in Filter + Rinses (6020) ICP1/MS 2106560 2010/03/23 2010/03/24 N_R

Maxxam ID FH5458 D u p Collected 2010/02/23

Sample ID RUN 1-M29 Shipped

Matrix Stack Sampling Train Received 2010/03/11

Test Description Instrumentation Batch Extracted Analyzed Analyst

Metals B.H. in H2O2/HNO3 Imp.(6020) ICP1/MS 2106659 2010/03/24 2010/03/24 N_R

Metals F.H. in Filter + Rinses (6020) ICP1/MS 2106560 2010/03/24 2010/03/24 N_R

Maxxam ID FH5459 Collected 2010/02/23

Sample ID RUN 2-M29 Shipped

Matrix Stack Sampling Train Received 2010/03/11

Test Description Instrumentation Batch Extracted Analyzed Analyst

Metals B.H. in H2O2/HNO3 Imp.(6020) ICP1/MS 2106659 2010/03/23 2010/03/24 N_R

Metals F.H. in Filter + Rinses (6020) ICP1/MS 2106560 2010/03/23 2010/03/24 N_R

Maxxam ID FH5460 Collected 2010/02/23

Sample ID RUN 3-M29 Shipped

Matrix Stack Sampling Train Received 2010/03/11

Test Description Instrumentation Batch Extracted Analyzed Analyst

Metals B.H. in H2O2/HNO3 Imp.(6020) ICP1/MS 2106659 2010/03/23 2010/03/24 N_R

Metals F.H. in Filter + Rinses (6020) ICP1/MS 2106560 2010/03/23 2010/03/24 N_R

Page 3 of 8
Eagle Mountain Scientific Inc

Maxxam Job #: B029231 Client Project #: 902637

Report Date: 2010/03/25 Project name: NRG ENERGY INC. VIENNA PLANT

ELEMENTS BY ICP/MS (STACK SAMPLING TRAIN)

Metals B.H. in H2O2/HNO3 Imp.(6020): Extra 20x dilution was required for all samples except FH5457, due to the matrix (very high S levels)

Post digestion duplicate and spike was done on sample FH5458

Some matrix interference suspected.

Metals F.H. in Filter + Rinses (6020): Extra 5x dilution was required for all samples except FH5457 due to the matrix and high levels

Post digestion duplicate and spike was done on sample FH5458.

Sample FH5459 was analyzed 100325.

Results relate only to the items tested.

Page 4 of 8
Eagle Mountain Scientific Inc

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB029231

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2106560 N_R Matrix Spike

(FH5458) Front Half Antimony (Sb) 2010/03/24 100 % 70 - 130

MS/MSD RPD Front Half Antimony (Sb) 2010/03/24 0 % 20

Matrix Spike

(FH5458) Front Half Arsenic (As) 2010/03/24 98 % 70 - 130

MS/MSD RPD Front Half Arsenic (As) 2010/03/24 0 % 20

Matrix Spike

(FH5458) Front Half Beryllium (Be) 2010/03/24 102 % 70 - 130

MS/MSD RPD Front Half Beryllium (Be) 2010/03/24 1.9 % 20

Matrix Spike

(FH5458) Front Half Cadmium (Cd) 2010/03/24 98 % 70 - 130

MS/MSD RPD Front Half Cadmium (Cd) 2010/03/24 2.0 % 20

Matrix Spike

(FH5458) Front Half Chromium (Cr) 2010/03/24 100 % 70 - 130

MS/MSD RPD Front Half Chromium (Cr) 2010/03/24 0 % 20

Matrix Spike

(FH5458) Front Half Cobalt (Co) 2010/03/24 102 % 70 - 130

MS/MSD RPD Front Half Cobalt (Co) 2010/03/24 1 % 20

Matrix Spike

(FH5458) Front Half Lead (Pb) 2010/03/24 107 % 70 - 130

MS/MSD RPD Front Half Lead (Pb) 2010/03/24 0.9 % 20

Matrix Spike

(FH5458) Front Half Manganese (Mn) 2010/03/24 104 % 70 - 130

MS/MSD RPD Front Half Manganese (Mn) 2010/03/24 1.9 % 20

Matrix Spike

(FH5458) Front Half Nickel (Ni) 2010/03/24 103 % 70 - 130

MS/MSD RPD Front Half Nickel (Ni) 2010/03/24 7.5 % 20

Matrix Spike

(FH5458) Front Half Selenium (Se) 2010/03/24 97 % 70 - 130

MS/MSD RPD Front Half Selenium (Se) 2010/03/24 0 % 20

Spiked Blank Front Half Antimony (Sb) 2010/03/24 98 % 85 - 115

RPD Front Half Antimony (Sb) 2010/03/24 0.2 % 20

Spiked Blank Front Half Arsenic (As) 2010/03/24 100 % 85 - 115

RPD Front Half Arsenic (As) 2010/03/24 1.4 % 20

Spiked Blank Front Half Beryllium (Be) 2010/03/24 105 % 85 - 115

RPD Front Half Beryllium (Be) 2010/03/24 4.4 % 20

Spiked Blank Front Half Cadmium (Cd) 2010/03/24 98 % 85 - 115

RPD Front Half Cadmium (Cd) 2010/03/24 0.5 % 20

Spiked Blank Front Half Chromium (Cr) 2010/03/24 97 % 85 - 115

RPD Front Half Chromium (Cr) 2010/03/24 1.1 % 20

Spiked Blank Front Half Cobalt (Co) 2010/03/24 98 % 85 - 115

RPD Front Half Cobalt (Co) 2010/03/24 2.1 % 20

Spiked Blank Front Half Lead (Pb) 2010/03/24 101 % 85 - 115

RPD Front Half Lead (Pb) 2010/03/24 1.5 % 20

Spiked Blank Front Half Manganese (Mn) 2010/03/24 100 % 85 - 115

RPD Front Half Manganese (Mn) 2010/03/24 2.8 % 20

Spiked Blank Front Half Nickel (Ni) 2010/03/24 99 % 85 - 115

RPD Front Half Nickel (Ni) 2010/03/24 0.5 % 20

Spiked Blank Front Half Selenium (Se) 2010/03/24 99 % 85 - 115

RPD Front Half Selenium (Se) 2010/03/24 1.6 % 20

Method Blank Front Half Antimony (Sb) 2010/03/24 ND, RDL=0.40 ug

RPD Front Half Antimony (Sb) 2010/03/24 NC % 20

Method Blank Front Half Arsenic (As) 2010/03/24 ND, RDL=0.40 ug

RPD Front Half Arsenic (As) 2010/03/24 NC % 20

Method Blank Front Half Beryllium (Be) 2010/03/24 ND, RDL=0.10 ug

Page 5 of 8
Eagle Mountain Scientific Inc

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB029231

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2106560 N_R RPD Front Half Beryllium (Be) 2010/03/24 NC % 20

Method Blank Front Half Cadmium (Cd) 2010/03/24 ND, RDL=0.10 ug

RPD Front Half Cadmium (Cd) 2010/03/24 NC % 20

Method Blank Front Half Chromium (Cr) 2010/03/24 ND, RDL=0.30 ug

RPD Front Half Chromium (Cr) 2010/03/24 NC % 20

Method Blank Front Half Cobalt (Co) 2010/03/24 ND, RDL=0.10 ug

RPD Front Half Cobalt (Co) 2010/03/24 NC % 20

Method Blank Front Half Lead (Pb) 2010/03/24 ND, RDL=0.20 ug

RPD Front Half Lead (Pb) 2010/03/24 NC % 20

Method Blank Front Half Manganese (Mn) 2010/03/24 ND, RDL=0.75 ug

RPD Front Half Manganese (Mn) 2010/03/24 NC % 20

Method Blank Front Half Nickel (Ni) 2010/03/24 ND, RDL=0.50 ug

RPD Front Half Nickel (Ni) 2010/03/24 NC % 20

Method Blank Front Half Selenium (Se) 2010/03/24 ND, RDL=1.0 ug

RPD Front Half Selenium (Se) 2010/03/24 NC % 20

RPD -

Sample/Sample

Dup Front Half Antimony (Sb) 2010/03/24 0.7 % 20

Front Half Arsenic (As) 2010/03/24 2.0 % 20

Front Half Beryllium (Be) 2010/03/24 NC % 20

Front Half Cadmium (Cd) 2010/03/24 NC % 20

Front Half Chromium (Cr) 2010/03/24 3.3 % 20

Front Half Cobalt (Co) 2010/03/24 2.1 % 20

Front Half Lead (Pb) 2010/03/24 2.1 % 20

Front Half Manganese (Mn) 2010/03/24 5.6 % 20

Front Half Nickel (Ni) 2010/03/24 1.1 % 20

Front Half Selenium (Se) 2010/03/24 NC % 20

2106659 N_R Matrix Spike

(FH5458) Back Half Antimony (Sb) 2010/03/24 100 % 70 - 130

MS/MSD RPD Back Half Antimony (Sb) 2010/03/24 1.0 % 20

Matrix Spike

(FH5458) Back Half Arsenic (As) 2010/03/24 99 % 70 - 130

MS/MSD RPD Back Half Arsenic (As) 2010/03/24 0 % 20

Matrix Spike

(FH5458) Back Half Beryllium (Be) 2010/03/24 102 % 70 - 130

MS/MSD RPD Back Half Beryllium (Be) 2010/03/24 0 % 20

Matrix Spike

(FH5458) Back Half Cadmium (Cd) 2010/03/24 100 % 70 - 130

MS/MSD RPD Back Half Cadmium (Cd) 2010/03/24 2.0 % 20

Matrix Spike

(FH5458) Back Half Chromium (Cr) 2010/03/24 103 % 70 - 130

MS/MSD RPD Back Half Chromium (Cr) 2010/03/24 1 % 20

Matrix Spike

(FH5458) Back Half Cobalt (Co) 2010/03/24 108 % 70 - 130

MS/MSD RPD Back Half Cobalt (Co) 2010/03/24 2.8 % 20

Matrix Spike

(FH5458) Back Half Lead (Pb) 2010/03/24 100 % 70 - 130

MS/MSD RPD Back Half Lead (Pb) 2010/03/24 1 % 20

Matrix Spike

(FH5458) Back Half Manganese (Mn) 2010/03/24 106 % 70 - 130

MS/MSD RPD Back Half Manganese (Mn) 2010/03/24 1.9 % 20

Matrix Spike

(FH5458) Back Half Nickel (Ni) 2010/03/24 108 % 70 - 130

MS/MSD RPD Back Half Nickel (Ni) 2010/03/24 2.8 % 20

Matrix Spike

(FH5458) Back Half Selenium (Se) 2010/03/24 103 % 70 - 130

Page 6 of 8
Eagle Mountain Scientific Inc

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB029231

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2106659 N_R MS/MSD RPD Back Half Selenium (Se) 2010/03/24 1 % 20

Spiked Blank Back Half Antimony (Sb) 2010/03/24 105 % 85 - 115

RPD Back Half Antimony (Sb) 2010/03/24 0.06 % 20

Spiked Blank Back Half Arsenic (As) 2010/03/24 101 % 85 - 115

RPD Back Half Arsenic (As) 2010/03/24 0.6 % 20

Spiked Blank Back Half Beryllium (Be) 2010/03/24 104 % 85 - 115

RPD Back Half Beryllium (Be) 2010/03/24 1.8 % 20

Spiked Blank Back Half Cadmium (Cd) 2010/03/24 103 % 85 - 115

RPD Back Half Cadmium (Cd) 2010/03/24 1.2 % 20

Spiked Blank Back Half Chromium (Cr) 2010/03/24 102 % 85 - 115

RPD Back Half Chromium (Cr) 2010/03/24 0.6 % 20

Spiked Blank Back Half Cobalt (Co) 2010/03/24 109 % 85 - 115

RPD Back Half Cobalt (Co) 2010/03/24 0.9 % 20

Spiked Blank Back Half Lead (Pb) 2010/03/24 101 % 85 - 115

RPD Back Half Lead (Pb) 2010/03/24 1 % 20

Spiked Blank Back Half Manganese (Mn) 2010/03/24 107 % 85 - 115

RPD Back Half Manganese (Mn) 2010/03/24 1.9 % 20

Spiked Blank Back Half Nickel (Ni) 2010/03/24 103 % 85 - 115

RPD Back Half Nickel (Ni) 2010/03/24 0.1 % 20

Spiked Blank Back Half Selenium (Se) 2010/03/24 98 % 85 - 115

RPD Back Half Selenium (Se) 2010/03/24 0.1 % 20

Method Blank Back Half Antimony (Sb) 2010/03/24 ND, RDL=0.20 ug

RPD Back Half Antimony (Sb) 2010/03/24 NC % 20

Method Blank Back Half Arsenic (As) 2010/03/24 ND, RDL=0.20 ug

RPD Back Half Arsenic (As) 2010/03/24 NC % 20

Method Blank Back Half Beryllium (Be) 2010/03/24 ND, RDL=0.050 ug

RPD Back Half Beryllium (Be) 2010/03/24 NC % 20

Method Blank Back Half Cadmium (Cd) 2010/03/24 ND, RDL=0.050 ug

RPD Back Half Cadmium (Cd) 2010/03/24 NC % 20

Method Blank Back Half Chromium (Cr) 2010/03/24 0.22, RDL=0.15 ug

RPD Back Half Chromium (Cr) 2010/03/24 NC % 20

Method Blank Back Half Cobalt (Co) 2010/03/24 ND, RDL=0.050 ug

RPD Back Half Cobalt (Co) 2010/03/24 NC % 20

Method Blank Back Half Lead (Pb) 2010/03/24 0.36, RDL=0.10 ug

RPD Back Half Lead (Pb) 2010/03/24 NC % 20

Method Blank Back Half Manganese (Mn) 2010/03/24 ND, RDL=0.25 ug

RPD Back Half Manganese (Mn) 2010/03/24 NC % 20

Method Blank Back Half Nickel (Ni) 2010/03/24 ND, RDL=0.25 ug

RPD Back Half Nickel (Ni) 2010/03/24 NC % 20

Method Blank Back Half Selenium (Se) 2010/03/24 ND, RDL=0.50 ug

RPD Back Half Selenium (Se) 2010/03/24 NC % 20

RPD -

Sample/Sample

Dup Back Half Antimony (Sb) 2010/03/24 NC % 20

Back Half Arsenic (As) 2010/03/24 NC % 20

Back Half Beryllium (Be) 2010/03/24 NC % 20

Back Half Cadmium (Cd) 2010/03/24 NC % 20

Back Half Chromium (Cr) 2010/03/24 0.2 % 20

Back Half Cobalt (Co) 2010/03/24 NC % 20

Back Half Lead (Pb) 2010/03/24 NC % 20

Back Half Manganese (Mn) 2010/03/24 2.2 % 20

Back Half Nickel (Ni) 2010/03/24 2.6 % 20

Back Half Selenium (Se) 2010/03/24 NC % 20

Duplicate: Paired analysis of a separate portion of the same sample. Used to evaluate the variance in the measurement.

Matrix Spike: A sample to which a known amount of the analyte of interest has been added. Used to evaluate sample matrix interference.

Page 7 of 8
Eagle Mountain Scientific Inc

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB029231

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a

reliable calculation.

Page 8 of 8
Client: Method: Method 5/29

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 2/19/10 2/19/10

ID#: Time 9:16 16:26

RH (%) 32 29

Weight 0.6263 0.6258

Date 2/27/10 2/28/10 Total:

Time 16:20 8:15

RH (%) 20 21

Weight 0.7574 0.7574 mg

Acetone Date 1/29/10 1/30/10

ID#: Time 10:22 11:30

RH (%) 26 25

Weight 178.9349 178.9344

Date 2/27/10 2/28/10 Total:

Time 8:47 6:31

RH (%) 26 24

Weight 178.9695 178.9700 mg

Organic Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

Aqueous Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

ND=Non Detect

10

Final Weight 

(g)

Final Weight 

(g)

1

HG1

Nicholas Presutti

Initial Weight 

(g)

PARTICULATE WEIGHT ANALYSIS

131.3

Initial Weight 

(g)

NRG

Vienna

902637

8

Ferbruary 24, 2010

Initial Weight 

(g)

Final Weight 

(g)

Sample Volume (ml)

Sample Volume (ml)

Sample Volume (ml)

0.6261

0.7574

178.9698

178.9347

Lab Note:

35.1

Initial Weight 

(g)

Final Weight 

(g)
Client: Method:

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 2/19/10 2/19/10

ID#: Time 9:19 16:24

RH (%) 32 30

Weight 0.5940 0.5936

Date 2/27/10 2/28/10 Total:

Time 16:21 8:15

RH (%) 20 21

Weight 0.7238 0.7243 mg

Acetone Date 1/29/10 1/30/10

ID#: Time 10:22 11:30

RH (%) 26 25

Weight 178.8248 178.8246

Date 2/27/10 2/28/10 Total:

Time 8:47 6:29

RH (%) 26 24

Weight 178.8761 178.8764 mg

Organic Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

Aqueous Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

ND=Non Detect

Final Weight 

(g)

Lab Note:

Sample Volume (ml)

Initial Weight 

(g)

Final Weight 

(g)

178.8763 51.6

Sample Volume (ml)

Initial Weight 

(g)

Sample Volume (ml)

Initial Weight 

(g)

11

Final Weight 

(g)

HG2

Final Weight 

(g)

0.7241 130.3

8

Ferbruary 24, 2010

Initial Weight 

(g)

0.5938

Vienna 2

902637 Nicholas Presutti

PARTICULATE WEIGHT ANALYSIS

NRG Method 5/29

178.8247
Client: Method:

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 2/19/10 2/19/10

ID#: Time 9:20 16:23

RH (%) 32 30

Weight 0.6055 0.6051

Date 2/27/10 2/28/10 Total:

Time 16:21 8:16

RH (%) 20 21

Weight 0.7460 0.7455 mg

Acetone Date 1/29/10 1/30/10

ID#: Time 10:22 11:30

RH (%) 26 25

Weight 178.5027 178.5022

Date 2/27/10 2/28/10 Total:

Time 8:46 6:30

RH (%) 26 24

Weight 178.5979 178.5984 mg

Organic Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

Aqueous Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

Lab Note: ND=Non Detect

Sample Volume (ml)

Initial Weight 

(g)

Final Weight 

(g)

Initial Weight 

(g)

Final Weight 

(g)

Final Weight 

(g)

178.5982 95.7

Sample Volume (ml)

140.5

Sample Volume (ml)

Initial Weight 

(g)

12

Initial Weight 

(g)

HG3 0.6053

Final Weight 

(g)

0.7458

Nicholas Presutti

8

Ferbruary 24, 2010

PARTICULATE WEIGHT ANALYSIS

NRG Method 5/29

Vienna 3

902637

178.5025
Client: Method: OTM 27/OTM 28

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 9/18/09 9/18/09

ID#: Time 9:40 16:48

RH (%) 46 47

Weight 0.1122 0.1122

Date 3/9/10 3/10/10 Total:

Time 16:20 8:15

RH (%) 20 21

Weight 0.1301 0.1301 mg

Filter Date 9/18/09 9/18/09

ID#: Time 9:41 16:47

RH (%) 46 47

Weight 0.1118 0.1118

Date 3/9/10 3/10/10 Total:

Time 16:21 8:15

RH (%) 20 21

Weight 0.1191 0.1196 mg

Filter Date 9/18/09 9/18/09

ID#: Time 9:42 16:46

RH (%) 46 47

Weight 0.1108 0.1110

Date 3/9/10 3/10/10 Total:

Time 16:21 8:16

RH (%) 20 21

Weight 0.1143 0.1144 mg

Filter Date 9/18/09 9/18/09

ID#: Time 9:43 16:46

RH (%) 46 46

Weight 0.1115 0.1118

Date 3/9/10 3/10/10 Total:

Time 16:22 8:17

RH (%) 20 21

Weight 0.1334 0.1336 mg

ND=Non Detect

m71

m72

m73

Final Weight 

(g)

Final Weight 

(g)

1

m70

Nicholas Presutti

3.5

Initial Weight 

(g)

0.1117

0.1335

PARTICULATE WEIGHT ANALYSIS

17.9

Initial Weight 

(g)

NRG

Vienna

902637

8

February 24, 2010

Initial Weight 

(g)

Final Weight 

(g)

Sample Volume (ml)

Sample Volume (ml)

Sample Volume (ml)

0.1122

0.1301

0.1194

0.1118

0.1109

0.1144

Lab Note:

7.6

Initial Weight 

(g)

21.8

Final Weight 

(g)
Client: Method:

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 9/18/09 9/18/09

ID#: Time 9:44 16:45

RH (%) 46 46

Weight 0.1102 0.1103

Date 3/9/10 3/10/10 Total:

Time 16:23 8:18

RH (%) 20 21

Weight 0.1137 0.1137 mg

Filter Date 9/18/09 9/18/09

ID#: Time 9:45 16:51

RH (%) 46 47

Weight 0.1116 0.1115

Date 3/9/10 3/10/10 Total:

Time 16:23 8:18

RH (%) 20 21

Weight 0.1150 0.1155 mg

Acetone Date 1/7/10 1/8/10

PM>2.5 Time 10:20 11:31

ID#: RH (%) 22 25

Weight 48.8766 48.8766

Date 3/24/10 3/24/10 Total:

Time 14:45 14:57

RH (%) 0 0

Weight 48.8900 48.8904 mg

Acetone Date 1/7/10 1/8/10

PM<2.5 Time 10:21 11:31

ID#: RH (%) 22 25

100-24 Weight 50.1545 50.1545

Date 3/24/10 3/24/10 Total:

Time 14:49 14:54

RH (%) 0 0

Weight 50.1566 50.1567 mg

ND=Non Detect

Final Weight 

(g)

50.1567 2.2

Lab Note:

Sample Volume (ml)

Initial Weight 

(g)

50.1545

100-5

Final Weight 

(g)

48.8902 13.6

0.1153 3.7

Sample Volume (ml)

Initial Weight 

(g)

48.8766

Sample Volume (ml)

Initial Weight 

(g)

m75

Final Weight 

(g)

m74

Final Weight 

(g)

0.1137 3.4

8

February 24, 2010

Initial Weight 

(g)

0.1103

Vienna 1

902637 Nicholas Presutti

PARTICULATE WEIGHT ANALYSIS

NRG OTM 27/OTM 28

0.1116
Client: Method:

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date

ID#: Time 

RH (%)

Weight

Date Total:

Time 

RH (%)

Weight mg

Acetone Date #N/A #N/A #N/A

ID#: Time #N/A #N/A #N/A

RH (%) #N/A #N/A #N/A

Weight #N/A #N/A #N/A

Date #N/A #N/A #N/A Total:

Time #N/A #N/A #N/A

RH (%) #N/A #N/A #N/A

Weight #N/A #N/A #N/A mg

Organic Date 3/24/10 3/25/10

ID#: Time 12:07 9:51

RH (%) 32 31

Weight 3.0659 3.0657

Date 4/28/10 4/29/10 Total:

Time 12:33 11:33

RH (%) 34 32

Weight 3.0753 3.0749 mg

Aqueous Date 3/24/10 3/25/10

ID#: Time 12:11 9:50

RH (%) 32 31

Weight 3.1213 3.1214

Date 5/5/10 5/5/10 Total:

Time 8:43 16:01

RH (%) 36 35

Weight 3.1755 3.1751 mg

Lab Note: ND=Non Detect

53.9

9.3

Sample Volume (ml)

Initial Weight 

(g)

3.0658

Tin 1

Tin 2

Final Weight 

(g)

3.1753

Initial Weight 

(g)

3.1214

Final Weight 

(g)

3.0751

Final Weight 

(g)

#N/A #N/A

Sample Volume (ml)

Sample Volume (ml)

Initial Weight 

(g)

#N/A

Initial Weight 

(g)

Final Weight 

(g)

Nicholas Presutti

8

February 24, 2010

PARTICULATE WEIGHT ANALYSIS

NRG OTM 27/OTM 28

Vienna 1

902637

#N/A
Client: Method: Method 5/OTM 28

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 1/7/10 1/8/10

ID#: Time 10:20 11:31

RH (%) 22 25

Weight 49.8350 49.8349

Date 3/24/10 3/24/10 Total:

Time 14:50 14:53

RH (%) 0 0

Weight 49.9447 49.9449 mg

Acetone Date 2/19/10 2/19/10

ID#: Time 9:21 16:22

RH (%) 32 30

Weight 0.6018 0.6013

Date 3/9/10 3/10/10 Total:

Time 16:22 8:17

RH (%) 20 21

Weight 0.6706 0.6701 mg

Organic Date 3/18/10 3/19/10

ID#: Time 15:26 9:55

RH (%) 31 0

Weight 112.7960 112.7957

Date 4/28/10 4/29/10 Total:

Time 12:33 11:40

RH (%) 34 32

Weight 112.7947 112.7945 mg

Aqueous Date 3/24/10 3/25/10

ID#: Time 12:10 9:47

RH (%) 32 31

Weight 3.1033 3.1037

Date 5/5/10 5/5/10 Total:

Time 8:43 16:01

RH (%) 36 35

Weight 3.1150 3.1146 mg

ND=Non Detect

HG4

250-13

Tin 3

Final Weight 

(g)

Final Weight 

(g)

2

100-30

Nicholas Presutti

ND 0.5

Initial Weight 

(g)

3.1035

3.1148

PARTICULATE WEIGHT ANALYSIS

109.8

Initial Weight 

(g)

NRG

Vienna

902637

8

Ferbruary 24, 2010

Initial Weight 

(g)

Final Weight 

(g)

Sample Volume (ml)

Sample Volume (ml)

Sample Volume (ml)

49.8350

49.9448

0.6704

0.6016

112.7959

112.7946

Lab Note:

68.8

Initial Weight 

(g)

11.3

Final Weight 

(g)
Client: Method:

Facility: Run #:

Project #: Analyst:

Unit:

Test Date:

Filter Date 2/19/10 2/19/10

ID#: Time 9:23 16:21

RH (%) 32 30

Weight 0.5945 0.5941

Date 3/9/10 3/10/10 Total:

Time 16:23 8:18

RH (%) 20 21

Weight 0.6684 0.6682 mg

Acetone Date 1/7/10 1/8/10

ID#: Time 10:21 11:30

RH (%) 22 25

Weight 48.5710 48.5710

Date 3/24/10 3/24/10 Total:

Time 14:51 14:52

RH (%) 0 0

Weight 48.7093 48.7092 mg

Organic Date 3/18/10 3/19/10 3/22/10

ID#: Time 15:27 9:56 15:59

RH (%) 31 0 30

Weight 116.5630 116.5609 116.5604

Date 4/28/10 4/29/10 Total:

Time 12:32 11:39

RH (%) 34 32

Weight 116.5641 116.5641 mg

Aqueous Date 3/24/10 3/25/10

ID#: Time 12:09 9:46

RH (%) 32 31

Weight 3.0690 3.0695

Date 5/5/10 5/5/10 Total:

Time 8:42 16:02

RH (%) 36 35

Weight 3.0770 3.0773 mg

ND=Non Detect

Final Weight 

(g)

3.0772 7.9

Lab Note:

Sample Volume (ml)

Initial Weight 

(g)

Tin 4 3.0693

250-14

Final Weight 

(g)

116.5641 3.4

48.7093 138.3

Sample Volume (ml)

Initial Weight 

(g)

116.5607

Sample Volume (ml)

Initial Weight 

(g)

100-33

Final Weight 

(g)

HG5

Final Weight 

(g)

0.6683 74.0

8

Ferbruary 24, 2010

Initial Weight 

(g)

0.5943

Vienna 3

902637 Nicholas Presutti

PARTICULATE WEIGHT ANALYSIS

NRG Method 5/OTM 28

48.5710
Your Project #: 902637 

Site: NRG ENERGY VIENNA PLANT

Your C.O.C. #: N/A

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/15

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B026190

Received: 2010/03/03, 20:30

Sample Matrix: AIR

# Samples Received: 4

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

Aldehydes + Ketones in Air 4 2010/03/12 2010/03/12 BRL SOP-00229 EPA 8315mod (M0011)

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. SCC and CALA have approved this reporting process and electronic report format. 

Total cover pages: 1

Page 1 of 5
Eagle Mountain

Maxxam Job #: B026190 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY VIENNA PLANT

CARBONYL COMPOUNDS BY HPLC (AIR)

Maxxam ID F G 0 9 5 9 F G 0 9 6 0 F G 0 9 6 1 F G 0 9 6 2

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s 4-BLANK 1-RUN 2-RUN 3-RUN RDL QC Batch

DNPH 1-1 M0011 2-2 M0011 3-3 M0011

Aldehydes & Ketones

Formaldehyde (Methanal) ug/Tot. 2 6 <2 <2 2 2099212

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 5
Eagle Mountain

Maxxam Job #: B026190 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY VIENNA PLANT

Test Summary

Maxxam ID FG0959 Collected 2010/02/24

Sample ID 4-BLANK DNPH Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Aldehydes + Ketones in Air LC/UV 2099212 2010/03/12 2010/03/12 SPS

Maxxam ID FG0960 Collected 2010/02/24

Sample ID 1-RUN 1-1 M0011 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Aldehydes + Ketones in Air LC/UV 2099212 2010/03/12 2010/03/12 SPS

Maxxam ID FG0961 Collected 2010/02/24

Sample ID 2-RUN 2-2 M0011 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Aldehydes + Ketones in Air LC/UV 2099212 2010/03/12 2010/03/12 SPS

Maxxam ID FG0962 Collected 2010/02/24

Sample ID 3-RUN 3-3 M0011 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Aldehydes + Ketones in Air LC/UV 2099212 2010/03/12 2010/03/12 SPS

Maxxam ID FG0962 D u p Collected 2010/02/24

Sample ID 3-RUN 3-3 M0011 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Aldehydes + Ketones in Air LC/UV 2099212 2010/03/12 2010/03/12 SPS

Page 3 of 5
Eagle Mountain

Maxxam Job #: B026190 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY VIENNA PLANT

GENERAL COMMENTS

Samples have been corrected for desorption efficiencies if average percent recoveries are less than 80% (does not apply to gravimetric and

inorganic analysis).

Results relate only to the items tested.

Page 4 of 5
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB026190

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2099212 SPS Spiked Blank Formaldehyde (Methanal) 2010/03/12 120 % N/A

RPD Formaldehyde (Methanal) 2010/03/12 0 % 30

Method Blank Formaldehyde (Methanal) 2010/03/12 2.3, RDL=0.2 ug/Tot.

RPD -

Sample/Sample

Dup Formaldehyde (Methanal) 2010/03/12 NC % 30

Duplicate: Paired analysis of a separate portion of the same sample. Used to evaluate the variance in the measurement.

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a

reliable calculation.

Page 5 of 5
Your Project #: 902637 

Site: NRG-ENERGY-VIENNA 8

Your C.O.C. #: N/A

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/26

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B026989

Received: 2010/03/03, 20:30

Sample Matrix: Stack Sampling Train

# Samples Received: 8

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

SVOCs in MM5 SamplingTrain (EPA0010) (1 ) 8 2010/03/10 2010/03/23 BRL SOP-00200 EPA 8270D mod(M0010)

MM5 PAH in Air (M0010/8270Dmod) (1 ) 8 2010/03/10 2010/03/19 BRL SOP-00201 CARB429(ARBM1,M2)mod

(1) This test was performed in Maxxam Mississauga under Maxxam Burlington SCC Accreditation

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. For Service Group specific validation please refer to the Validation Signature Page.

Total cover pages: 1

Page 1 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 3 F G 4 5 3 4 F G 4 5 3 5 F G 4 5 3 6

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s BLANK BLANK TEST RDL TEST RDL QC Batch

REAGENT-M0010 REAGENT-M0010 1-VIENNA 1-VIENNA

8-M0010 8-M0010

Semivolatile Organics

1,2,4-Trichlorobenzene ug <6 <6 <6 6 <6 6 2097422

1,2-Dichlorobenzene ug <6 <6 <6 6 <6 6 2097422

1,3-Dichlorobenzene ug <6 <6 <6 6 <6 6 2097422

1,4-Dichlorobenzene ug <6 <6 <6 6 <6 6 2097422

1-Methylnaphthalene ug <0.15 <0.15 0.21 0.15 <0.15 0.15 2097418

2,4,5-Trichlorophenol ug <6 <6 <6 6 <6 6 2097422

2,4,6-Trichlorophenol ug <5 <5 <5 5 <5 5 2097422

2,4-Dichlorophenol ug <4 <4 <4 4 <4 4 2097422

2,4-Dimethylphenol ug <6 <6 <6 6 <6 6 2097422

2,4-Dinitrophenol ug <10 <10 <10 10 <10 10 2097422

2,4-Dinitrotoluene ug <2 <2 <2 2 <2 2 2097422

2,6-Dinitrotoluene ug <3 <3 <3 3 <3 3 2097422

2-Chloronaphthalene ug <3 <3 <3 3 <3 3 2097422

2-Chlorophenol ug <8 <8 <8 8 <8 8 2097422

2-Methylanthracene ug <0.15 <0.15 <0.15 0.15 <0.15 0.15 2097418

2-Methylnaphthalene ug <0.15 <0.15 0.35 0.15 <0.15 0.15 2097418

2-Methylphenol ug <9 <9 <9 9 <9 9 2097422

2-Nitroaniline ug <20 <20 <20 20 <20 20 2097422

2-Nitrophenol ug <5 <5 <5 5 <5 5 2097422

3 & 4-methylphenol ug <10 <10 <10 10 <10 10 2097422

3,3'-Dichlorobenzidine ug <8 <8 <8 8 <8 8 2097422

3-Nitroaniline ug <20 <20 <20 20 <20 20 2097422

4,6-Dinitro-2-methylphenol ug <10 <10 <10 10 <10 10 2097422

4-Bromophenyl phenyl ether ug <2 <2 <2 2 <2 2 2097422

4-Chloro-3-Methylphenol ug <5 <5 <5 5 <5 5 2097422

4-Chloroaniline ug <20 <20 <20 20 <20 20 2097422

4-Chlorophenyl phenyl ether ug <3 <3 <3 3 <3 3 2097422

4-Nitroaniline ug <20 <20 <20 20 <20 20 2097422

4-Nitrophenol ug <10 <10 <10 10 <10 10 2097422

Acenaphthene ug <0.075 <0.075 0.102 0.075 <0.075 0.075 2097418

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 3 F G 4 5 3 4 F G 4 5 3 5 F G 4 5 3 6

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s BLANK BLANK TEST RDL TEST RDL QC Batch

REAGENT-M0010 REAGENT-M0010 1-VIENNA 1-VIENNA

8-M0010 8-M0010

Acenaphthylene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Aniline ug <20 <20 <20 20 <20 20 2097422

Anthracene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzidine ug <60 <60 <60 60 <60 60 2097422

Benzo(a)anthracene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(a)pyrene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(b)fluoranthene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(e)pyrene ug <0.15 <0.15 <0.15 0.15 <0.15 0.15 2097418

Benzo(g,h,i)perylene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(k)fluoranthene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Benzoic Acid ug <10 <10 <10 10 296 50 2097422

Benzyl Alcohol ug <6 <6 <6 6 <6 6 2097422

Benzyl butyl phthalate ug <2 <2 <2 2 <2 2 2097422

Bis(2-chloroethoxy)methane ug <4 <4 <4 4 <4 4 2097422

Bis(2-chloroethyl)ether ug <5 <5 <5 5 <5 5 2097422

Bis(2-chloroisopropyl)ether ug <5 <5 <5 5 <5 5 2097422

Bis(2-ethylhexyl)phthalate ug 12 <8 <8 8 <8 8 2097422

Carbazole ug <20 <20 <20 20 <20 20 2097422

Chrysene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Coronene ug <0.15 <0.15 <0.15 0.15 <0.15 0.15 2097418

Dibenz(a,h)anthracene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Dibenzofuran ug <20 <20 <20 20 <20 20 2097422

Diethyl phthalate ug <3 <3 <3 3 <3 3 2097422

Dimethyl phthalate ug <3 <3 <3 3 <3 3 2097422

Di-N-butyl phthalate ug <3 <3 <3 3 <3 3 2097422

Di-N-octyl phthalate ug <3 <3 <3 3 <3 3 2097422

Fluoranthene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Fluorene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Hexachlorobenzene ug <6 <6 <6 6 <6 6 2097422

Hexachlorobutadiene ug <6 <6 <6 6 <6 6 2097422

Hexachlorocyclopentadiene ug <6 <6 <6 6 <6 6 2097422

Hexachloroethane ug <6 <6 <6 6 <6 6 2097422

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 3 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 3 F G 4 5 3 4 F G 4 5 3 5 F G 4 5 3 6

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s BLANK BLANK TEST RDL TEST RDL QC Batch

REAGENT-M0010 REAGENT-M0010 1-VIENNA 1-VIENNA

8-M0010 8-M0010

Indeno(1,2,3-cd)pyrene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Isophorone ug <10 <10 <10 10 <10 10 2097422

Naphthalene ug <0.11 0.14 0.32 0.11 1.19 0.11 2097418

Nitrobenzene ug <6 <6 <6 6 <6 6 2097422

N-Nitrosodimethylamine ug <30 <30 <30 30 <30 30 2097422

N-Nitroso-di-n-propylamine ug <6 <6 <6 6 <6 6 2097422

N-Nitrosodiphenylamine ug <6 <6 <6 6 <6 6 2097422

Pentachlorophenol ug <9 <9 <9 9 <9 9 2097422

Perylene ug <0.15 <0.15 <0.15 0.15 <0.15 0.15 2097418

Phenanthrene ug <0.075 <0.075 0.110 0.075 <0.075 0.075 2097418

Phenol ug <5 <5 <5 5 10 5 2097422

Pyrene ug <0.075 <0.075 <0.075 0.075 <0.075 0.075 2097418

Surrogate Recovery (%)

2,4,6-Tribromophenol % 56 0.75 ( 1 ) 70 72 2097422

2-Fluorobiphenyl % 92 94 83 97 2097422

2-Fluorophenol % 74 69 72 2097422

D5-Nitrobenzene % 90 94 81 96 2097422

D5-Phenol % 90 85 82 101 2097422

D10-Anthracene % 88 88 65 90 2097418

D10-Fluorene (FS) % 76 83 2097418

D12-Benzo(a)pyrene % 92 93 16 ( 1 ) 100 2097418

D12-Chrysene % 78 80 86 87 2097418

D14-Terphenyl (FS) % 81 91 2097418

N/A = Not Applicable

QC Batch = Quality Control Batch

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets acceptability

criteria.

Page 4 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 7 F G 4 5 3 8 F G 4 5 3 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s TEST RDL TEST RDL TEST RDL QC Batch

2-VIENNA 2-VIENNA 3-VIENNA

8-M0010 8-M0010 8-M0010

Semivolatile Organics

1,2,4-Trichlorobenzene ug <6 6 <6 6 <6 6 2097422

1,2-Dichlorobenzene ug <6 6 <6 6 <6 6 2097422

1,3-Dichlorobenzene ug <6 6 <6 6 <6 6 2097422

1,4-Dichlorobenzene ug <6 6 <6 6 <6 6 2097422

1-Methylnaphthalene ug <0.15 0.15 <0.15 0.15 <0.15 0.15 2097418

2,4,5-Trichlorophenol ug <6 6 <6 6 <6 6 2097422

2,4,6-Trichlorophenol ug <5 5 <5 5 <5 5 2097422

2,4-Dichlorophenol ug <4 4 <4 4 <4 4 2097422

2,4-Dimethylphenol ug <6 6 <6 6 <6 6 2097422

2,4-Dinitrophenol ug <10 10 <10 10 <10 10 2097422

2,4-Dinitrotoluene ug <2 2 <2 2 <2 2 2097422

2,6-Dinitrotoluene ug <3 3 <3 3 <3 3 2097422

2-Chloronaphthalene ug <3 3 <3 3 <3 3 2097422

2-Chlorophenol ug <8 8 <8 8 <8 8 2097422

2-Methylanthracene ug <0.15 0.15 <0.15 0.15 <0.15 0.15 2097418

2-Methylnaphthalene ug <0.15 0.15 0.17 0.15 <0.15 0.15 2097418

2-Methylphenol ug <9 9 <9 9 <9 9 2097422

2-Nitroaniline ug <20 20 <20 20 <20 20 2097422

2-Nitrophenol ug <5 5 <5 5 <5 5 2097422

3 & 4-methylphenol ug <10 10 13 10 <10 10 2097422

3,3'-Dichlorobenzidine ug <8 8 <8 8 <8 8 2097422

3-Nitroaniline ug <20 20 <20 20 <20 20 2097422

4,6-Dinitro-2-methylphenol ug <10 10 <10 10 <10 10 2097422

4-Bromophenyl phenyl ether ug <2 2 <2 2 <2 2 2097422

4-Chloro-3-Methylphenol ug <5 5 <5 5 <5 5 2097422

4-Chloroaniline ug <20 20 <20 20 <20 20 2097422

4-Chlorophenyl phenyl ether ug <3 3 <3 3 <3 3 2097422

4-Nitroaniline ug <20 20 <20 20 <20 20 2097422

4-Nitrophenol ug <10 10 <10 10 <10 10 2097422

Acenaphthene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 5 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 7 F G 4 5 3 8 F G 4 5 3 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s TEST RDL TEST RDL TEST RDL QC Batch

2-VIENNA 2-VIENNA 3-VIENNA

8-M0010 8-M0010 8-M0010

Acenaphthylene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Aniline ug <20 20 <20 20 <20 20 2097422

Anthracene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzidine ug <60 60 <60 60 <60 60 2097422

Benzo(a)anthracene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(a)pyrene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(b)fluoranthene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(e)pyrene ug <0.15 0.15 <0.15 0.15 <0.15 0.15 2097418

Benzo(g,h,i)perylene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzo(k)fluoranthene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Benzoic Acid ug <10 10 148 50 <10 10 2097422

Benzyl Alcohol ug <6 6 <6 6 <6 6 2097422

Benzyl butyl phthalate ug <2 2 <2 2 <2 2 2097422

Bis(2-chloroethoxy)methane ug <4 4 <4 4 <4 4 2097422

Bis(2-chloroethyl)ether ug <5 5 <5 5 <5 5 2097422

Bis(2-chloroisopropyl)ether ug <5 5 <5 5 <5 5 2097422

Bis(2-ethylhexyl)phthalate ug <8 8 <8 8 11 8 2097422

Carbazole ug <20 20 <20 20 <20 20 2097422

Chrysene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Coronene ug <0.15 0.15 <0.15 0.15 <0.15 0.15 2097418

Dibenz(a,h)anthracene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Dibenzofuran ug <20 20 <20 20 <20 20 2097422

Diethyl phthalate ug <3 3 <3 3 <3 3 2097422

Dimethyl phthalate ug <3 3 <3 3 <3 3 2097422

Di-N-butyl phthalate ug <3 3 <3 3 <3 3 2097422

Di-N-octyl phthalate ug <3 3 <3 3 <3 3 2097422

Fluoranthene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Fluorene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Hexachlorobenzene ug <6 6 <6 6 <6 6 2097422

Hexachlorobutadiene ug <6 6 <6 6 <6 6 2097422

Hexachlorocyclopentadiene ug <6 6 <6 6 <6 6 2097422

Hexachloroethane ug <6 6 <6 6 <6 6 2097422

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 6 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 3 7 F G 4 5 3 8 F G 4 5 3 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s TEST RDL TEST RDL TEST RDL QC Batch

2-VIENNA 2-VIENNA 3-VIENNA

8-M0010 8-M0010 8-M0010

Indeno(1,2,3-cd)pyrene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Isophorone ug <10 10 <10 10 <10 10 2097422

Naphthalene ug <0.11 0.11 0.53 0.11 <0.11 0.11 2097418

Nitrobenzene ug <6 6 <6 6 <6 6 2097422

N-Nitrosodimethylamine ug <30 30 <30 30 <30 30 2097422

N-Nitroso-di-n-propylamine ug <6 6 <6 6 <6 6 2097422

N-Nitrosodiphenylamine ug <6 6 <6 6 <6 6 2097422

Pentachlorophenol ug <9 9 <9 9 <9 9 2097422

Perylene ug <0.15 0.15 <0.15 0.15 <0.15 0.15 2097418

Phenanthrene ug <0.075 0.075 0.121 0.075 <0.075 0.075 2097418

Phenol ug <5 5 6 5 <5 5 2097422

Pyrene ug <0.075 0.075 <0.075 0.075 <0.075 0.075 2097418

Surrogate Recovery (%)

2,4,6-Tribromophenol % 57 69 105 2097422

2-Fluorobiphenyl % 80 98 95 2097422

2-Fluorophenol % 62 93 2097422

D5-Nitrobenzene % 79 97 88 2097422

D5-Phenol % 77 104 91 2097422

D10-Anthracene % 84 102 54 2097418

D10-Fluorene (FS) % 84 2097418

D12-Benzo(a)pyrene % 65 104 11 ( 1 ) 2097418

D12-Chrysene % 82 87 83 2097418

D14-Terphenyl (FS) % 88 2097418

N/A = Not Applicable

QC Batch = Quality Control Batch

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis

meets acceptability criteria.

Page 7 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 4 0

Sampling Date 2010/02/24

COC Number N/A

 U n i t s TEST RDL QC Batch

3-VIENNA

8-M0010

Semivolatile Organics

1,2,4-Trichlorobenzene ug <6 6 2097422

1,2-Dichlorobenzene ug <6 6 2097422

1,3-Dichlorobenzene ug <6 6 2097422

1,4-Dichlorobenzene ug <6 6 2097422

1-Methylnaphthalene ug <0.15 0.15 2097418

2,4,5-Trichlorophenol ug <6 6 2097422

2,4,6-Trichlorophenol ug <5 5 2097422

2,4-Dichlorophenol ug <4 4 2097422

2,4-Dimethylphenol ug <6 6 2097422

2,4-Dinitrophenol ug <10 10 2097422

2,4-Dinitrotoluene ug <2 2 2097422

2,6-Dinitrotoluene ug <3 3 2097422

2-Chloronaphthalene ug <3 3 2097422

2-Chlorophenol ug <8 8 2097422

2-Methylanthracene ug <0.15 0.15 2097418

2-Methylnaphthalene ug <0.15 0.15 2097418

2-Methylphenol ug <9 9 2097422

2-Nitroaniline ug <20 20 2097422

2-Nitrophenol ug <5 5 2097422

3 & 4-methylphenol ug 15 10 2097422

3,3'-Dichlorobenzidine ug <8 8 2097422

3-Nitroaniline ug <20 20 2097422

4,6-Dinitro-2-methylphenol ug <10 10 2097422

4-Bromophenyl phenyl ether ug <2 2 2097422

4-Chloro-3-Methylphenol ug <5 5 2097422

4-Chloroaniline ug <20 20 2097422

4-Chlorophenyl phenyl ether ug <3 3 2097422

4-Nitroaniline ug <20 20 2097422

4-Nitrophenol ug <10 10 2097422

Acenaphthene ug <0.075 0.075 2097418

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 8 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 4 0

Sampling Date 2010/02/24

COC Number N/A

 U n i t s TEST RDL QC Batch

3-VIENNA

8-M0010

Acenaphthylene ug <0.075 0.075 2097418

Aniline ug <20 20 2097422

Anthracene ug <0.075 0.075 2097418

Benzidine ug <60 60 2097422

Benzo(a)anthracene ug <0.075 0.075 2097418

Benzo(a)pyrene ug <0.075 0.075 2097418

Benzo(b)fluoranthene ug <0.075 0.075 2097418

Benzo(e)pyrene ug <0.15 0.15 2097418

Benzo(g,h,i)perylene ug <0.075 0.075 2097418

Benzo(k)fluoranthene ug <0.075 0.075 2097418

Benzoic Acid ug 161 50 2097422

Benzyl Alcohol ug <6 6 2097422

Benzyl butyl phthalate ug <2 2 2097422

Bis(2-chloroethoxy)methane ug <4 4 2097422

Bis(2-chloroethyl)ether ug <5 5 2097422

Bis(2-chloroisopropyl)ether ug <5 5 2097422

Bis(2-ethylhexyl)phthalate ug <8 8 2097422

Carbazole ug <20 20 2097422

Chrysene ug <0.075 0.075 2097418

Coronene ug <0.15 0.15 2097418

Dibenz(a,h)anthracene ug <0.075 0.075 2097418

Dibenzofuran ug <20 20 2097422

Diethyl phthalate ug <3 3 2097422

Dimethyl phthalate ug <3 3 2097422

Di-N-butyl phthalate ug <3 3 2097422

Di-N-octyl phthalate ug <3 3 2097422

Fluoranthene ug <0.075 0.075 2097418

Fluorene ug <0.075 0.075 2097418

Hexachlorobenzene ug <6 6 2097422

Hexachlorobutadiene ug <6 6 2097422

Hexachlorocyclopentadiene ug <6 6 2097422

Hexachloroethane ug <6 6 2097422

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 9 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

SEMI-VOLATILE ORGANICS BY GC-MS (STACK SAMPLING TRAIN)

Maxxam ID F G 4 5 4 0

Sampling Date 2010/02/24

COC Number N/A

 U n i t s TEST RDL QC Batch

3-VIENNA

8-M0010

Indeno(1,2,3-cd)pyrene ug <0.075 0.075 2097418

Isophorone ug <10 10 2097422

Naphthalene ug 0.39 0.11 2097418

Nitrobenzene ug <6 6 2097422

N-Nitrosodimethylamine ug <30 30 2097422

N-Nitroso-di-n-propylamine ug <6 6 2097422

N-Nitrosodiphenylamine ug <6 6 2097422

Pentachlorophenol ug <9 9 2097422

Perylene ug <0.15 0.15 2097418

Phenanthrene ug <0.075 0.075 2097418

Phenol ug <5 5 2097422

Pyrene ug <0.075 0.075 2097418

Surrogate Recovery (%)

2,4,6-Tribromophenol % 64 2097422

2-Fluorobiphenyl % 89 2097422

D5-Nitrobenzene % 90 2097422

D5-Phenol % 96 2097422

D10-Anthracene % 90 2097418

D10-Fluorene (FS) % 71 2097418

D12-Benzo(a)pyrene % 97 2097418

D12-Chrysene % 80 2097418

D14-Terphenyl (FS) % 79 2097418

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 10 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

Test Summary

Maxxam ID FG4533 Collected 2010/02/24

Sample ID BLANK REAGENT-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4534 Collected 2010/02/24

Sample ID BLANK REAGENT-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4535 Collected 2010/02/24

Sample ID TEST 1-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4536 Collected 2010/02/24

Sample ID TEST 1-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4537 Collected 2010/02/24

Sample ID TEST 2-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4538 Collected 2010/02/24

Sample ID TEST 2-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Page 11 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

Test Summary

Maxxam ID FG4539 Collected 2010/02/24

Sample ID TEST 3-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Maxxam ID FG4540 Collected 2010/02/24

Sample ID TEST 3-VIENNA 8-M0010 Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

SVOCs in MM5 SamplingTrain (EPA0010) GC/MS 2097422 2010/03/10 2010/03/23 WZ

MM5 PAH in Air (M0010/8270Dmod) GC/MS 2097418 2010/03/10 2010/03/19 WZ

Page 12 of 16
Eagle Mountain

Maxxam Job #: B026989 Client Project #: 902637

Report Date: 2010/03/26 Project name: NRG-ENERGY-VIENNA 8

GENERAL COMMENTS

PAHMSM5-TR

Sample sent out as 2x split and extracted as 3x split, field spike was corrected.

ABNMM-TR

Bis(2-ethylhexyl)phthalate positive found in blank. Samples should be considered to be possibly contaminated to the level found in the blank.

Anline ,4-Chloroaniline and Benzidine are above 20% RSD in intial calibration and continuing.

Sample FG4534-01: ABNMM5-TR

Surrogate 2,4,6-Tribromophenol was low in Sample

Sample FG4535-01: PAHMM5-TR

Low recovery of surrogate D12-Benzo(a)pyrene in Sample

Internal Std area response criteria was high in Sample. Rerun with similar results. Original run reported.

Sample FG4536-01: ABNMM5-TR

Sample was injected at 9min at solvent delay due to huge peck at 6 min. So there is no surrogate 2 Fluorophenol reported.

Sample was rerun at a 4x dilution for Benzoic Acid due to exceedence of linear range.

Mdls were raised accordingly.

Sample FG4538-01: ABNMM5-TR

Sample was injected at 9min at solvent delay due to huge peck at 6 min. So there is no surrogate 2 Fluorophenol reported.

Sample was rerun at a 4x dilution for Benzoic Acid due to exceedence of linear range.

Mdls were raised accordingly.

Sample FG4539-01: PAHMM5-TR

Low recovery of surrogate D12-Benzo(a)pyrene in Sample

ABNMM5-TR

Internal Std area response criteria was low in Sample. Rrerun with similar results. Original run reported.

Sample FG4540-01: ABNMM5-TR

Sample was injected at 9min at solvent delay due to huge peck at 6 min. So there is no surrogate 2 Fluorophenol reported.

Sample was rerun at a 4x dilution for Benzoic Acid due to exceedence of linear range.

Mdls were raised accordingly.

Results relate only to the items tested.

Page 13 of 16
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG-ENERGY-VIENNA 8

Quality Assurance Report

Maxxam Job Number: GB026989

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2097418 WZ Spiked Blank D10-Anthracene 2010/03/19 83 % 50 - 150

D12-Benzo(a)pyrene 2010/03/19 106 % 50 - 150

D12-Chrysene 2010/03/19 99 % 50 - 150

Acenaphthene 2010/03/19 88 % 60 - 130

RPD Acenaphthene 2010/03/19 7.8 % 50

Spiked Blank Acenaphthylene 2010/03/19 91 % 60 - 130

RPD Acenaphthylene 2010/03/19 11.6 % 50

Spiked Blank Anthracene 2010/03/19 85 % 60 - 130

RPD Anthracene 2010/03/19 6.0 % 50

Spiked Blank Benzo(a)anthracene 2010/03/19 84 % 60 - 130

RPD Benzo(a)anthracene 2010/03/19 10.1 % 50

Spiked Blank Benzo(a)pyrene 2010/03/19 88 % 60 - 130

RPD Benzo(a)pyrene 2010/03/19 6.2 % 50

Spiked Blank Benzo(b)fluoranthene 2010/03/19 84 % 60 - 130

RPD Benzo(b)fluoranthene 2010/03/19 2.7 % 50

Spiked Blank Benzo(g,h,i)perylene 2010/03/19 89 % 60 - 130

RPD Benzo(g,h,i)perylene 2010/03/19 6.0 % 50

Spiked Blank Benzo(k)fluoranthene 2010/03/19 92 % 60 - 130

RPD Benzo(k)fluoranthene 2010/03/19 12.3 % 50

Spiked Blank Chrysene 2010/03/19 97 % 60 - 130

RPD Chrysene 2010/03/19 11.3 % 50

Spiked Blank Dibenz(a,h)anthracene 2010/03/19 84 % 60 - 130

RPD Dibenz(a,h)anthracene 2010/03/19 3.6 % 50

Spiked Blank Fluoranthene 2010/03/19 87 % 60 - 130

RPD Fluoranthene 2010/03/19 3.7 % 50

Spiked Blank Fluorene 2010/03/19 85 % 60 - 130

RPD Fluorene 2010/03/19 10.1 % 50

Spiked Blank Indeno(1,2,3-cd)pyrene 2010/03/19 83 % 60 - 130

RPD Indeno(1,2,3-cd)pyrene 2010/03/19 4.2 % 50

Spiked Blank Naphthalene 2010/03/19 90 % 60 - 130

RPD Naphthalene 2010/03/19 10.7 % 50

Spiked Blank Phenanthrene 2010/03/19 80 % 60 - 130

RPD Phenanthrene 2010/03/19 7.6 % 50

Spiked Blank Pyrene 2010/03/19 85 % 60 - 130

RPD Pyrene 2010/03/19 0.6 % 50

Method Blank D10-Anthracene 2010/03/19 82 % 50 - 150

D12-Benzo(a)pyrene 2010/03/19 101 % 50 - 150

D12-Chrysene 2010/03/19 90 % 50 - 150

1-Methylnaphthalene 2010/03/19 ND, RDL=0.15 ug

2-Methylanthracene 2010/03/19 ND, RDL=0.15 ug

2-Methylnaphthalene 2010/03/19 ND, RDL=0.15 ug

Acenaphthene 2010/03/19 ND, RDL=0.075 ug

Acenaphthylene 2010/03/19 ND, RDL=0.075 ug

Anthracene 2010/03/19 ND, RDL=0.075 ug

Benzo(a)anthracene 2010/03/19 ND, RDL=0.075 ug

Benzo(a)pyrene 2010/03/19 ND, RDL=0.075 ug

Benzo(b)fluoranthene 2010/03/19 ND, RDL=0.075 ug

Benzo(e)pyrene 2010/03/19 ND, RDL=0.15 ug

Benzo(g,h,i)perylene 2010/03/19 ND, RDL=0.075 ug

Benzo(k)fluoranthene 2010/03/19 ND, RDL=0.075 ug

Chrysene 2010/03/19 ND, RDL=0.075 ug

Coronene 2010/03/19 ND, RDL=0.15 ug

Dibenz(a,h)anthracene 2010/03/19 ND, RDL=0.075 ug

Fluoranthene 2010/03/19 ND, RDL=0.075 ug

Fluorene 2010/03/19 ND, RDL=0.075 ug

Page 14 of 16
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG-ENERGY-VIENNA 8

Quality Assurance Report (Continued)

Maxxam Job Number: GB026989

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2097418 WZ Method Blank Indeno(1,2,3-cd)pyrene 2010/03/19 ND, RDL=0.075 ug

Naphthalene 2010/03/19 ND, RDL=0.11 ug

Perylene 2010/03/19 ND, RDL=0.15 ug

Phenanthrene 2010/03/19 ND, RDL=0.075 ug

Pyrene 2010/03/19 ND, RDL=0.075 ug

2097422 WZ Spiked Blank 2,4,6-Tribromophenol 2010/03/23 100 % 24 - 121

2-Fluorobiphenyl 2010/03/23 91 % 30 - 115

2-Fluorophenol 2010/03/23 89 % 30 - 130

D5-Nitrobenzene 2010/03/23 95 % 23 - 120

D5-Phenol 2010/03/23 94 % 24 - 113

1,2,4-Trichlorobenzene 2010/03/23 86 % 40 - 125

RPD 1,2,4-Trichlorobenzene 2010/03/23 16.9 % 50

Spiked Blank 1,4-Dichlorobenzene 2010/03/23 87 % 40 - 125

RPD 1,4-Dichlorobenzene 2010/03/23 4.5 % 50

Spiked Blank 2,4-Dinitrotoluene 2010/03/23 100 % 40 - 125

RPD 2,4-Dinitrotoluene 2010/03/23 2.5 % 50

Spiked Blank 2-Chlorophenol 2010/03/23 92 % 10 - 125

RPD 2-Chlorophenol 2010/03/23 5.4 % 50

Spiked Blank 4-Chloro-3-Methylphenol 2010/03/23 100 % 10 - 125

RPD 4-Chloro-3-Methylphenol 2010/03/23 7.3 % 50

Spiked Blank 4-Nitrophenol 2010/03/23 87 % 10 - 125

RPD 4-Nitrophenol 2010/03/23 3.9 % 50

Spiked Blank N-Nitroso-di-n-propylamine 2010/03/23 109 % 40 - 125

RPD N-Nitroso-di-n-propylamine 2010/03/23 6.7 % 50

Spiked Blank Pentachlorophenol 2010/03/23 70 % 10 - 125

RPD Pentachlorophenol 2010/03/23 22.6 % 50

Spiked Blank Phenol 2010/03/23 91 % 10 - 125

RPD Phenol 2010/03/23 2.4 % 50

Method Blank 2,4,6-Tribromophenol 2010/03/23 39 % 24 - 121

2-Fluorobiphenyl 2010/03/23 98 % 30 - 115

2-Fluorophenol 2010/03/23 93 % 30 - 130

D5-Nitrobenzene 2010/03/23 94 % 23 - 120

D5-Phenol 2010/03/23 98 % 24 - 113

1,2,4-Trichlorobenzene 2010/03/23 ND, RDL=6 ug

1,2-Dichlorobenzene 2010/03/23 ND, RDL=6 ug

1,3-Dichlorobenzene 2010/03/23 ND, RDL=6 ug

1,4-Dichlorobenzene 2010/03/23 ND, RDL=6 ug

2,4,5-Trichlorophenol 2010/03/23 ND, RDL=6 ug

2,4,6-Trichlorophenol 2010/03/23 ND, RDL=5 ug

2,4-Dichlorophenol 2010/03/23 ND, RDL=4 ug

2,4-Dimethylphenol 2010/03/23 ND, RDL=6 ug

2,4-Dinitrophenol 2010/03/23 ND, RDL=10 ug

2,4-Dinitrotoluene 2010/03/23 ND, RDL=2 ug

2,6-Dinitrotoluene 2010/03/23 ND, RDL=3 ug

2-Chloronaphthalene 2010/03/23 ND, RDL=3 ug

2-Chlorophenol 2010/03/23 ND, RDL=8 ug

2-Methylphenol 2010/03/23 ND, RDL=9 ug

2-Nitroaniline 2010/03/23 ND, RDL=20 ug

2-Nitrophenol 2010/03/23 ND, RDL=5 ug

3 & 4-methylphenol 2010/03/23 ND, RDL=10 ug

3,3'-Dichlorobenzidine 2010/03/23 ND, RDL=8 ug

3-Nitroaniline 2010/03/23 ND, RDL=20 ug

4,6-Dinitro-2-methylphenol 2010/03/23 ND, RDL=10 ug

4-Bromophenyl phenyl ether 2010/03/23 ND, RDL=2 ug

4-Chloro-3-Methylphenol 2010/03/23 ND, RDL=5 ug

Page 15 of 16
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG-ENERGY-VIENNA 8

Quality Assurance Report (Continued)

Maxxam Job Number: GB026989

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2097422 WZ Method Blank 4-Chloroaniline 2010/03/23 ND, RDL=20 ug

4-Chlorophenyl phenyl ether 2010/03/23 ND, RDL=3 ug

4-Nitroaniline 2010/03/23 ND, RDL=20 ug

4-Nitrophenol 2010/03/23 ND, RDL=10 ug

Aniline 2010/03/23 ND, RDL=20 ug

Benzidine 2010/03/23 ND, RDL=60 ug

Benzoic Acid 2010/03/23 ND, RDL=10 ug

Benzyl Alcohol 2010/03/23 ND, RDL=6 ug

Benzyl butyl phthalate 2010/03/23 ND, RDL=2 ug

Bis(2-chloroethoxy)methane 2010/03/23 ND, RDL=4 ug

Bis(2-chloroethyl)ether 2010/03/23 ND, RDL=5 ug

Bis(2-chloroisopropyl)ether 2010/03/23 ND, RDL=5 ug

Bis(2-ethylhexyl)phthalate 2010/03/23 12, RDL=8 ug

Carbazole 2010/03/23 ND, RDL=20 ug

Dibenzofuran 2010/03/23 ND, RDL=20 ug

Diethyl phthalate 2010/03/23 ND, RDL=3 ug

Dimethyl phthalate 2010/03/23 ND, RDL=3 ug

Di-N-butyl phthalate 2010/03/23 ND, RDL=3 ug

Di-N-octyl phthalate 2010/03/23 ND, RDL=3 ug

Hexachlorobenzene 2010/03/23 ND, RDL=6 ug

Hexachlorobutadiene 2010/03/23 ND, RDL=6 ug

Hexachlorocyclopentadiene 2010/03/23 ND, RDL=6 ug

Hexachloroethane 2010/03/23 ND, RDL=6 ug

Isophorone 2010/03/23 ND, RDL=10 ug

Nitrobenzene 2010/03/23 ND, RDL=6 ug

N-Nitrosodimethylamine 2010/03/23 ND, RDL=30 ug

N-Nitroso-di-n-propylamine 2010/03/23 ND, RDL=6 ug

N-Nitrosodiphenylamine 2010/03/23 ND, RDL=6 ug

Pentachlorophenol 2010/03/23 ND, RDL=9 ug

Phenol 2010/03/23 ND, RDL=5 ug

Duplicate: Paired analysis of a separate portion of the same sample. Used to evaluate the variance in the measurement.

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

Surrogate: A pure or isotopically labeled compound whose behavior mirrors the analytes of interest. Used to evaluate extraction efficiency.

Page 16 of 16
Your Project #: 902637 

Site: NRG ENERGY, INC. VIENNA PLANT

Your C.O.C. #: n/a

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/16

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B025190

Received: 2010/03/03, 09:53

Sample Matrix: SAMPLING TRAIN

# Samples Received: 4

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

Hydrogen Halides in H2SO4 Imp. (1 ) 4 2010/03/11 2010/03/11 BRL SOP-00108 EPA Method 26A 

Volume of Sulfuric Acid Impinger 4 N/A 2010/03/11 

(1) This test was performed in Maxxam Mississauga under Maxxam Burlington SCC Accreditation

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. SCC and CALA have approved this reporting process and electronic report format. 

Total cover pages: 1

Page 1 of 5
Eagle Mountain

Maxxam Job #: B025190 Client Project #: 902637

Report Date: 2010/03/16 Project name: NRG ENERGY, INC. VIENNA PLANT

RESULTS OF ANALYSES OF SAMPLING TRAIN

Maxxam ID F F 6 3 8 2 F F 6 3 8 3 F F 6 3 8 4 F F 6 3 8 5

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number n/a n/a n/a

 U n i t s 7-BLANK-VIENNA 1-HCL-VIENNA 3-HCL-VIENNA 5-HCL-VIENNA RDL QC Batch

8 8-TEST 1 8-TEST 2 8-TEST 3

Volume ml 250 450 470 460 1 2098419

Miscellaneous Parameters

Hydrochloric Acid ug <200 5600 5800 5700 200 2098421

Hydrofluoric Acid ug <200 1100 980 930 200 2098421

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 5
Eagle Mountain

Maxxam Job #: B025190 Client Project #: 902637

Report Date: 2010/03/16 Project name: NRG ENERGY, INC. VIENNA PLANT

Test Summary

Maxxam ID FF6382 Collected 2010/02/24

Sample ID 7-BLANK-VIENNA 8 Shipped

Matrix SAMPLING TRAIN Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Hydrogen Halides in H2SO4 Imp. IC/SPEC 2098421 2010/03/11 2010/03/11 A_S

Volume of Sulfuric Acid Impinger 2098419 N/A 2010/03/11 A_S

Maxxam ID FF6383 Collected 2010/02/24

Sample ID 1-HCL-VIENNA 8-TEST 1 Shipped

Matrix SAMPLING TRAIN Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Hydrogen Halides in H2SO4 Imp. IC/SPEC 2098421 2010/03/11 2010/03/11 A_S

Volume of Sulfuric Acid Impinger 2098419 N/A 2010/03/11 A_S

Maxxam ID FF6384 Collected 2010/02/24

Sample ID 3-HCL-VIENNA 8-TEST 2 Shipped

Matrix SAMPLING TRAIN Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Hydrogen Halides in H2SO4 Imp. IC/SPEC 2098421 2010/03/11 2010/03/11 A_S

Volume of Sulfuric Acid Impinger 2098419 N/A 2010/03/11 A_S

Maxxam ID FF6384 D u p Collected 2010/02/24

Sample ID 3-HCL-VIENNA 8-TEST 2 Shipped

Matrix SAMPLING TRAIN Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Hydrogen Halides in H2SO4 Imp. IC/SPEC 2098421 2010/03/11 2010/03/11 A_S

Maxxam ID FF6385 Collected 2010/02/24

Sample ID 5-HCL-VIENNA 8-TEST 3 Shipped

Matrix SAMPLING TRAIN Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Hydrogen Halides in H2SO4 Imp. IC/SPEC 2098421 2010/03/11 2010/03/11 A_S

Volume of Sulfuric Acid Impinger 2098419 N/A 2010/03/11 A_S

Page 3 of 5
Eagle Mountain

Maxxam Job #: B025190 Client Project #: 902637

Report Date: 2010/03/16 Project name: NRG ENERGY, INC. VIENNA PLANT

GENERAL COMMENTS

Results relate only to the items tested.

Page 4 of 5
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY, INC. VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB025190

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2098421 A_S Matrix Spike

(FF6384) Hydrochloric Acid 2010/03/11 104 % 80 - 120

Hydrofluoric Acid 2010/03/11 102 % 80 - 120

Spiked Blank Hydrochloric Acid 2010/03/11 97 % 90 - 110

Hydrofluoric Acid 2010/03/11 102 % 90 - 110

Method Blank Hydrochloric Acid 2010/03/11 ND, RDL=200 ug

Hydrofluoric Acid 2010/03/11 ND, RDL=200 ug

RPD -

Sample/Sample

Dup Hydrochloric Acid 2010/03/11 1.5 % 20

Hydrofluoric Acid 2010/03/11 NC % 20

Matrix Spike: A sample to which a known amount of the analyte of interest has been added. Used to evaluate sample matrix interference.

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a

reliable calculation.

Page 5 of 5
Your Project #: 902637 

Site: NRG ENERGY VIENNA PLANT

Your C.O.C. #: N/A

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/17

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B026176

Received: 2010/03/03, 20:30

Sample Matrix: Stack Sampling Train

# Samples Received: 4

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

Cyanide in Impingers 4 2010/03/16 2010/03/16 EPA CTM-33 

Volume of Sodium Hydroxide Impinger 4 N/A 2010/03/17 

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. SCC and CALA have approved this reporting process and electronic report format. 

Total cover pages: 1

Page 1 of 5
Eagle Mountain

Maxxam Job #: B026176 Client Project #: 902637

Report Date: 2010/03/17 Project name: NRG ENERGY VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Maxxam ID F G 0 8 9 6 F G 0 8 9 7 F G 0 8 9 8 F G 0 8 9 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s 7-BLANK RDL 1-RUN 3-RUN RDL 5-RUN RDL QC Batch

1-HCN 2-HCN 3-HCN

Volume ml 110 1 680 690 1 760 1 2101298

Inorganics

Cyanide (CN) ug <10 10 <70 <70 70 <500 500 2101693

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 5
Eagle Mountain

Maxxam Job #: B026176 Client Project #: 902637

Report Date: 2010/03/17 Project name: NRG ENERGY VIENNA PLANT

Test Summary

Maxxam ID FG0896 Collected 2010/02/24

Sample ID 7-BLANK Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Cyanide in Impingers IC 2101693 2010/03/16 2010/03/16 LLE

Volume of Sodium Hydroxide Impinger 2101298 N/A 2010/03/17 LLE

Maxxam ID FG0897 Collected 2010/02/24

Sample ID 1-RUN 1-HCN Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Cyanide in Impingers IC 2101693 2010/03/16 2010/03/16 LLE

Volume of Sodium Hydroxide Impinger 2101298 N/A 2010/03/17 LLE

Maxxam ID FG0898 Collected 2010/02/24

Sample ID 3-RUN 2-HCN Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Cyanide in Impingers IC 2101693 2010/03/16 2010/03/16 LLE

Volume of Sodium Hydroxide Impinger 2101298 N/A 2010/03/17 LLE

Maxxam ID FG0898 D u p Collected 2010/02/24

Sample ID 3-RUN 2-HCN Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Cyanide in Impingers IC 2101693 2010/03/16 2010/03/16 LLE

Maxxam ID FG0899 Collected 2010/02/24

Sample ID 5-RUN 3-HCN Shipped

Matrix Stack Sampling Train Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

Cyanide in Impingers IC 2101693 2010/03/16 2010/03/16 LLE

Volume of Sodium Hydroxide Impinger 2101298 N/A 2010/03/17 LLE

Page 3 of 5
Eagle Mountain

Maxxam Job #: B026176 Client Project #: 902637

Report Date: 2010/03/17 Project name: NRG ENERGY VIENNA PLANT

RESULTS OF ANALYSES OF STACK SAMPLING TRAIN

Cyanide in Impingers: Samples are Improperly Preserved, pH should be greater than or equal to 12.

Results relate only to the items tested.

Page 4 of 5
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB026176

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2101693 LLE Matrix Spike

(FG0898) Cyanide (CN) 2010/03/16 96 % 80 - 120

Spiked Blank Cyanide (CN) 2010/03/16 94 % 90 - 110

Method Blank Cyanide (CN) 2010/03/16 ND, RDL=10 ug

RPD -

Sample/Sample

Dup Cyanide (CN) 2010/03/16 NC % 20

Matrix Spike: A sample to which a known amount of the analyte of interest has been added. Used to evaluate sample matrix interference.

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

NC (RPD): The RPD was not calculated. The level of analyte detected in the parent sample and its duplicate was not sufficiently significant to permit a

reliable calculation.

Page 5 of 5
Your Project #: 902637 

Site: NRG ENERGY INC. VIENNA PLANT

Your C.O.C. #: N/A

Attention: Mark Carlson

Eagle Mountain

8905 Autumn Oaks Dr.

Rockford, MN

USA 55373

Report Date: 2010/03/15

CERTIFICATE OF ANALYSIS

MAXXAM JOB #: B025871

Received: 2010/03/03, 20:30

Sample Matrix: AIR

# Samples Received: 13

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

VOST Analysis (5041mod) 8 N/A 2010/03/05 BRL SOP-00302 EPA 5041mod(M0030) 

VOST Analysis (5041mod) 5 N/A 2010/03/08 BRL SOP-00302 EPA 5041mod(M0030) 

Sample Matrix: Water

# Samples Received: 3

Date Date Method

Analyses Quantity Extracted Analyzed Laboratory Method Reference

VOST Condensate (8260Cmod) 3 N/A 2010/03/09 BRL SOP-00305 EPA 8260Cmod(M0030)

Encryption Key

Please direct all questions regarding this Certificate of Analysis to your Project Manager.

CLAYTON JOHNSON, Project Manager

Email: Clayton.Johnson@maxxamanalytics.com

Phone# (905) 817-5769

====================================================================

Maxxam has procedures in place to guard against improper use of the electronic signature and have the required "signatories", as per section

5.10.2 of ISO/IEC 17025:2005(E), signing the reports. SCC and CALA have approved this reporting process and electronic report format. 

Total cover pages: 1

Page 1 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 2 9 F F 9 6 3 1 F F 9 6 3 2

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s R1A-M0031-FC2006 RDL R1B-M0031-FC1992 R1C-M0031-FC1987 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Chloromethane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Vinyl Chloride ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Bromomethane ug 0.15 0.02 0.14 0.07 0.02 2094877

Chloroethane ug <0.009 0.009 <0.009 <0.009 0.009 2094877

Trichlorofluoromethane (FREON 11) ug 0.02 0.01 <0.01 <0.01 0.01 2094877

Acetone (2-Propanone) ug 1.10 0.05 0.17 0.23 0.05 2094877

1,1-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Iodomethane ug 0.04 0.02 <0.02 <0.02 0.02 2094877

Carbon Disulfide ug <0.03 0.03 <0.03 <0.03 0.03 2094877

Methylene Chloride(Dichloromethane) ug 0.98 0.02 0.05 0.08 0.02 2094877

1,1-Dichloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

trans-1,2-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

cis-1,2-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Chloroform ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,2-Dichloroethane ug <0.03 0.03 <0.02 <0.02 0.02 2094877

Methyl Ethyl Ketone (2-Butanone) ug 0.13 0.04 <0.04 <0.04 0.04 2094877

1,1,1-Trichloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Carbon Tetrachloride ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Benzene ug 0.935 0.009 0.411 0.367 0.009 2094877

1,1,2-Trichloroethane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,2-Dichloropropane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Trichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Dibromomethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Bromodichloromethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

cis-1,3-Dichloropropene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

trans-1,3-Dichloropropene ug <0.007 0.007 <0.007 <0.007 0.007 2094877

Dibromochloromethane ug <0.009 0.009 <0.009 <0.009 0.009 2094877

Methyl Isobutyl Ketone ug 0.02 0.02 <0.02 <0.02 0.02 2094877

Methyl Butyl Ketone (2-Hexanone) ug 0.05 0.03 <0.03 <0.03 0.03 2094877

Toluene ug 0.73 0.01 0.21 0.19 0.01 2094877

Ethylene Dibromide ug <0.01 0.01 <0.01 <0.01 0.01 2094877

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 2 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 2 9 F F 9 6 3 1 F F 9 6 3 2

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s R1A-M0031-FC2006 RDL R1B-M0031-FC1992 R1C-M0031-FC1987 RDL QC Batch

Tetrachloroethylene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Chlorobenzene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,1,1,2-Tetrachloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Ethylbenzene ug 0.02 0.01 <0.01 <0.01 0.01 2094877

m / p-Xylene ug 0.08 0.02 <0.02 0.02 0.02 2094877

Styrene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

o-Xylene ug 0.02 0.02 <0.02 <0.02 0.02 2094877

Bromoform ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,1,2,2-Tetrachloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,2,3-Trichloropropane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,3-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,4-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,2-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Surrogate Recovery (%)

Bromofluorobenzene % 105 90 79 2094877

D10-Ethylbenzene (FS) % 120 110 109 2094877

D4-1,2-Dichloroethane % 99 97 97 2094877

D8-Toluene % 74 75 73 2094877

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 3 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 3 3 F F 9 6 3 4 F F 9 6 3 5

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s R1D-M0031-FC1990 RDL R2A-M0031-FC1991 R2B-M0031-FC1986 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Chloromethane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Vinyl Chloride ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Bromomethane ug 0.10 0.02 0.14 0.22 0.02 2094877

Chloroethane ug <0.009 0.009 <0.009 <0.009 0.009 2094877

Trichlorofluoromethane (FREON 11) ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Acetone (2-Propanone) ug 0.10 0.05 0.22 0.12 0.05 2094877

1,1-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Iodomethane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Carbon Disulfide ug <0.03 0.03 <0.03 <0.03 0.03 2094877

Methylene Chloride(Dichloromethane) ug 0.04 0.02 0.42 0.06 0.02 2094877

1,1-Dichloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

trans-1,2-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

cis-1,2-Dichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Chloroform ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,2-Dichloroethane ug <0.02 0.02 <0.007 <0.007 0.007 2094877

Methyl Ethyl Ketone (2-Butanone) ug <0.04 0.04 <0.04 <0.04 0.04 2094877

1,1,1-Trichloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Carbon Tetrachloride ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Benzene ug 0.289 0.009 0.689 0.562 0.009 2094877

1,1,2-Trichloroethane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,2-Dichloropropane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Trichloroethylene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Dibromomethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Bromodichloromethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

cis-1,3-Dichloropropene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

trans-1,3-Dichloropropene ug <0.007 0.007 <0.007 <0.007 0.007 2094877

Dibromochloromethane ug <0.009 0.009 <0.009 <0.009 0.009 2094877

Methyl Isobutyl Ketone ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Methyl Butyl Ketone (2-Hexanone) ug <0.03 0.03 <0.03 <0.03 0.03 2094877

Toluene ug 0.16 0.01 0.27 0.17 0.01 2094877

Ethylene Dibromide ug <0.01 0.01 <0.01 <0.01 0.01 2094877

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 4 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 3 3 F F 9 6 3 4 F F 9 6 3 5

Sampling Date 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A

 U n i t s R1D-M0031-FC1990 RDL R2A-M0031-FC1991 R2B-M0031-FC1986 RDL QC Batch

Tetrachloroethylene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Chlorobenzene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,1,1,2-Tetrachloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

Ethylbenzene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

m / p-Xylene ug 0.02 0.02 0.03 0.02 0.02 2094877

Styrene ug <0.01 0.01 <0.01 <0.01 0.01 2094877

o-Xylene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Bromoform ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,1,2,2-Tetrachloroethane ug <0.01 0.01 <0.01 <0.01 0.01 2094877

1,2,3-Trichloropropane ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,3-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,4-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

1,2-Dichlorobenzene ug <0.02 0.02 <0.02 <0.02 0.02 2094877

Surrogate Recovery (%)

Bromofluorobenzene % 103 107 108 2094877

D10-Ethylbenzene (FS) % 110 128 103 2094877

D4-1,2-Dichloroethane % 97 97 95 2094877

D8-Toluene % 76 75 73 2094877

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 5 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 3 6 F F 9 6 3 7 F F 9 6 3 8 F F 9 6 3 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s R2C-M0031-FC1988 QC Batch R2D-M0031-FC2005 R3A-M0031-FC2004 R3B-M0031-FC1984 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Chloromethane ug <0.02 2094877 0.25 <0.02 <0.02 0.02 2095401

Vinyl Chloride ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Bromomethane ug 0.05 2094877 0.03 0.08 0.08 0.02 2095401

Chloroethane ug <0.009 2094877 <0.009 <0.009 <0.009 0.009 2095401

Trichlorofluoromethane (FREON 11) ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Acetone (2-Propanone) ug 0.12 2094877 0.10 0.22 0.14 0.05 2095401

1,1-Dichloroethylene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Iodomethane ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Carbon Disulfide ug <0.03 2094877 <0.03 <0.03 <0.03 0.03 2095401

Methylene Chloride(Dichloromethane) ug 0.04 2094877 0.03 0.98 0.04 0.02 2095401

1,1-Dichloroethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

trans-1,2-Dichloroethylene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

cis-1,2-Dichloroethylene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Chloroform ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

1,2-Dichloroethane ug <0.007 2094877 <0.007 <0.007 <0.007 0.007 2095401

Methyl Ethyl Ketone (2-Butanone) ug <0.04 2094877 <0.04 <0.04 <0.04 0.04 2095401

1,1,1-Trichloroethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Carbon Tetrachloride ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Benzene ug 0.417 2094877 0.340 0.261 0.293 0.009 2095401

1,1,2-Trichloroethane ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

1,2-Dichloropropane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Trichloroethylene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Dibromomethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Bromodichloromethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

cis-1,3-Dichloropropene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

trans-1,3-Dichloropropene ug <0.007 2094877 <0.007 <0.007 <0.007 0.007 2095401

Dibromochloromethane ug <0.009 2094877 <0.009 <0.009 <0.009 0.009 2095401

Methyl Isobutyl Ketone ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Methyl Butyl Ketone (2-Hexanone) ug <0.03 2094877 <0.03 <0.03 <0.03 0.03 2095401

Toluene ug 0.18 2094877 0.21 0.21 0.13 0.01 2095401

Ethylene Dibromide ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 6 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 3 6 F F 9 6 3 7 F F 9 6 3 8 F F 9 6 3 9

Sampling Date 2010/02/24 2010/02/24 2010/02/24 2010/02/24

COC Number N/A N/A N/A N/A

 U n i t s R2C-M0031-FC1988 QC Batch R2D-M0031-FC2005 R3A-M0031-FC2004 R3B-M0031-FC1984 RDL QC Batch

Tetrachloroethylene ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Chlorobenzene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

1,1,1,2-Tetrachloroethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

Ethylbenzene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

m / p-Xylene ug 0.03 2094877 0.02 <0.02 <0.02 0.02 2095401

Styrene ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

o-Xylene ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Bromoform ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

1,1,2,2-Tetrachloroethane ug <0.01 2094877 <0.01 <0.01 <0.01 0.01 2095401

1,2,3-Trichloropropane ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

1,3-Dichlorobenzene ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

1,4-Dichlorobenzene ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

1,2-Dichlorobenzene ug <0.02 2094877 <0.02 <0.02 <0.02 0.02 2095401

Surrogate Recovery (%)

Bromofluorobenzene % 60 2094877 21 ( 1 ) 89 97 2095401

D10-Ethylbenzene (FS) % 106 2094877 102 111 111 2095401

D4-1,2-Dichloroethane % 96 2094877 101 98 98 2095401

D8-Toluene % 74 2094877 73 78 76 2095401

N/A = Not Applicable

QC Batch = Quality Control Batch

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets acceptability criteria.

Page 7 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 4 0 F F 9 6 4 9

Sampling Date 2010/02/24 2010/02/24

COC Number N/A N/A

 U n i t s R3C-M0031-FC2000 R3D-M0031-FC1983 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug <0.02 <0.02 0.02 2095401

Chloromethane ug <0.02 <0.02 0.02 2095401

Vinyl Chloride ug <0.01 <0.01 0.01 2095401

Bromomethane ug 0.10 0.09 0.02 2095401

Chloroethane ug <0.009 <0.009 0.009 2095401

Trichlorofluoromethane (FREON 11) ug <0.01 <0.01 0.01 2095401

Acetone (2-Propanone) ug 0.13 0.14 0.05 2095401

1,1-Dichloroethylene ug <0.01 <0.01 0.01 2095401

Iodomethane ug <0.02 <0.02 0.02 2095401

Carbon Disulfide ug <0.03 <0.03 0.03 2095401

Methylene Chloride(Dichloromethane) ug 0.02 0.08 0.02 2095401

1,1-Dichloroethane ug <0.01 <0.01 0.01 2095401

trans-1,2-Dichloroethylene ug <0.01 <0.01 0.01 2095401

cis-1,2-Dichloroethylene ug <0.01 <0.01 0.01 2095401

Chloroform ug <0.01 <0.01 0.01 2095401

1,2-Dichloroethane ug <0.007 <0.007 0.007 2095401

Methyl Ethyl Ketone (2-Butanone) ug <0.04 <0.04 0.04 2095401

1,1,1-Trichloroethane ug <0.01 <0.01 0.01 2095401

Carbon Tetrachloride ug <0.02 <0.02 0.02 2095401

Benzene ug 0.496 0.747 0.009 2095401

1,1,2-Trichloroethane ug <0.02 <0.02 0.02 2095401

1,2-Dichloropropane ug <0.01 <0.01 0.01 2095401

Trichloroethylene ug <0.01 <0.01 0.01 2095401

Dibromomethane ug <0.01 <0.01 0.01 2095401

Bromodichloromethane ug <0.01 <0.01 0.01 2095401

cis-1,3-Dichloropropene ug <0.01 <0.01 0.01 2095401

trans-1,3-Dichloropropene ug <0.007 <0.007 0.007 2095401

Dibromochloromethane ug <0.009 <0.009 0.009 2095401

Methyl Isobutyl Ketone ug <0.02 <0.02 0.02 2095401

Methyl Butyl Ketone (2-Hexanone) ug <0.03 <0.03 0.03 2095401

Toluene ug 0.10 0.24 0.01 2095401

Ethylene Dibromide ug <0.01 <0.01 0.01 2095401

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 8 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 4 0 F F 9 6 4 9

Sampling Date 2010/02/24 2010/02/24

COC Number N/A N/A

 U n i t s R3C-M0031-FC2000 R3D-M0031-FC1983 RDL QC Batch

Tetrachloroethylene ug <0.02 <0.02 0.02 2095401

Chlorobenzene ug <0.01 <0.01 0.01 2095401

1,1,1,2-Tetrachloroethane ug <0.01 <0.01 0.01 2095401

Ethylbenzene ug <0.01 <0.01 0.01 2095401

m / p-Xylene ug <0.02 0.05 0.02 2095401

Styrene ug <0.01 <0.01 0.01 2095401

o-Xylene ug <0.02 <0.02 0.02 2095401

Bromoform ug <0.01 <0.01 0.01 2095401

1,1,2,2-Tetrachloroethane ug <0.01 <0.01 0.01 2095401

1,2,3-Trichloropropane ug <0.02 <0.02 0.02 2095401

1,3-Dichlorobenzene ug <0.02 <0.02 0.02 2095401

1,4-Dichlorobenzene ug <0.02 <0.02 0.02 2095401

1,2-Dichlorobenzene ug <0.02 <0.02 0.02 2095401

Surrogate Recovery (%)

Bromofluorobenzene % 34 ( 1 ) 35 ( 1 ) 2095401

D10-Ethylbenzene (FS) % 112 104 2095401

D4-1,2-Dichloroethane % 101 98 2095401

D8-Toluene % 73 65 ( 1 ) 2095401

N/A = Not Applicable

QC Batch = Quality Control Batch

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this

analysis meets acceptability criteria.

Page 9 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 6 4

Sampling Date 2010/02/24

COC Number N/A

 U n i t s BLANK-M0031-FC1989 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug <0.02 0.02 2094877

Chloromethane ug <0.02 0.02 2094877

Vinyl Chloride ug <0.01 0.01 2094877

Bromomethane ug <0.02 0.02 2094877

Chloroethane ug <0.009 0.009 2094877

Trichlorofluoromethane (FREON 11) ug <0.01 0.01 2094877

Acetone (2-Propanone) ug <0.05 0.05 2094877

1,1-Dichloroethylene ug <0.01 0.01 2094877

Iodomethane ug <0.02 0.02 2094877

Carbon Disulfide ug <0.03 0.03 2094877

Methylene Chloride(Dichloromethane) ug 0.03 0.02 2094877

1,1-Dichloroethane ug <0.01 0.01 2094877

trans-1,2-Dichloroethylene ug <0.01 0.01 2094877

cis-1,2-Dichloroethylene ug <0.01 0.01 2094877

Chloroform ug <0.01 0.01 2094877

1,2-Dichloroethane ug <0.007 0.007 2094877

Methyl Ethyl Ketone (2-Butanone) ug <0.04 0.04 2094877

1,1,1-Trichloroethane ug <0.01 0.01 2094877

Carbon Tetrachloride ug <0.02 0.02 2094877

Benzene ug <0.009 0.009 2094877

1,1,2-Trichloroethane ug <0.02 0.02 2094877

1,2-Dichloropropane ug <0.01 0.01 2094877

Trichloroethylene ug <0.01 0.01 2094877

Dibromomethane ug <0.01 0.01 2094877

Bromodichloromethane ug <0.01 0.01 2094877

cis-1,3-Dichloropropene ug <0.01 0.01 2094877

trans-1,3-Dichloropropene ug <0.007 0.007 2094877

Dibromochloromethane ug <0.009 0.009 2094877

Methyl Isobutyl Ketone ug <0.02 0.02 2094877

Methyl Butyl Ketone (2-Hexanone) ug <0.03 0.03 2094877

Toluene ug 0.03 0.01 2094877

Ethylene Dibromide ug <0.01 0.01 2094877

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 10 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (AIR)

Maxxam ID F F 9 6 6 4

Sampling Date 2010/02/24

COC Number N/A

 U n i t s BLANK-M0031-FC1989 RDL QC Batch

Tetrachloroethylene ug <0.02 0.02 2094877

Chlorobenzene ug <0.01 0.01 2094877

1,1,1,2-Tetrachloroethane ug <0.01 0.01 2094877

Ethylbenzene ug <0.01 0.01 2094877

m / p-Xylene ug <0.02 0.02 2094877

Styrene ug <0.01 0.01 2094877

o-Xylene ug <0.02 0.02 2094877

Bromoform ug <0.01 0.01 2094877

1,1,2,2-Tetrachloroethane ug <0.01 0.01 2094877

1,2,3-Trichloropropane ug <0.02 0.02 2094877

1,3-Dichlorobenzene ug <0.02 0.02 2094877

1,4-Dichlorobenzene ug <0.02 0.02 2094877

1,2-Dichlorobenzene ug <0.02 0.02 2094877

Surrogate Recovery (%)

Bromofluorobenzene % 93 2094877

D10-Ethylbenzene (FS) % 130 2094877

D4-1,2-Dichloroethane % 102 2094877

D8-Toluene % 103 2094877

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 11 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (WATER)

Maxxam ID F F 9 6 2 6 F F 9 6 2 7

Sampling Date 2010/02/24 2010/02/24

COC Number N/A N/A

 U n i t s 1-CONDENSATE-1 RDL 2-CONDENSATE-2 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug/L <10 10 <13 13 2093299

Chloromethane ug/L <20 20 <26 26 2093299

Vinyl Chloride ug/L <4.0 4.0 <5.2 5.2 2093299

Bromomethane ug/L <30 30 <39 39 2093299

Chloroethane ug/L <10 10 <13 13 2093299

Trichlorofluoromethane (FREON 11) ug/L <20 20 <26 26 2093299

Acetone (2-Propanone) ug/L 430 100 430 130 2093299

1,1-Dichloroethylene ug/L <10 10 <13 13 2093299

Iodomethane ug/L <6.0 6.0 <7.8 7.8 2093299

Carbon Disulfide ug/L <5.0 5.0 <6.5 6.5 2093299

Methylene Chloride(Dichloromethane) ug/L 550 10 750 13 2093299

1,1-Dichloroethane ug/L <4.0 4.0 <5.2 5.2 2093299

trans-1,2-Dichloroethylene ug/L <10 10 <13 13 2093299

cis-1,2-Dichloroethylene ug/L <10 10 <13 13 2093299

Chloroform ug/L <4.0 4.0 <5.2 5.2 2093299

1,2-Dichloroethane ug/L <5.0 5.0 <6.5 6.5 2093299

Methyl Ethyl Ketone (2-Butanone) ug/L <100 100 <130 130 2093299

1,1,1-Trichloroethane ug/L <5.0 5.0 <6.5 6.5 2093299

Carbon Tetrachloride ug/L <5.0 5.0 <6.5 6.5 2093299

Benzene ug/L <5.0 5.0 <6.5 6.5 2093299

1,1,2-Trichloroethane ug/L <5.0 5.0 <6.5 6.5 2093299

1,2-Dichloropropane ug/L <5.0 5.0 <6.5 6.5 2093299

Trichloroethylene ug/L <5.0 5.0 <6.5 6.5 2093299

Dibromomethane ug/L <5.0 5.0 <6.5 6.5 2093299

Bromodichloromethane ug/L <4.0 4.0 <5.2 5.2 2093299

cis-1,3-Dichloropropene ug/L <4.0 4.0 <5.2 5.2 2093299

trans-1,3-Dichloropropene ug/L <6.0 6.0 <7.8 7.8 2093299

Dibromochloromethane ug/L <4.0 4.0 <5.2 5.2 2093299

Methyl Isobutyl Ketone ug/L <50 50 <65 65 2093299

Methyl Butyl Ketone (2-Hexanone) ug/L <50 50 <65 65 2093299

Toluene ug/L 14 5.0 21 6.5 2093299

Ethylene Dibromide ug/L <5.0 5.0 <6.5 6.5 2093299

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 12 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (WATER)

Maxxam ID F F 9 6 2 6 F F 9 6 2 7

Sampling Date 2010/02/24 2010/02/24

COC Number N/A N/A

 U n i t s 1-CONDENSATE-1 RDL 2-CONDENSATE-2 RDL QC Batch

Tetrachloroethylene ug/L <5.0 5.0 <6.5 6.5 2093299

Chlorobenzene ug/L <5.0 5.0 <6.5 6.5 2093299

1,1,1,2-Tetrachloroethane ug/L <5.0 5.0 <6.5 6.5 2093299

Ethylbenzene ug/L <5.0 5.0 <6.5 6.5 2093299

p+m-Xylene ug/L <5.0 5.0 <6.5 6.5 2093299

Styrene ug/L <5.0 5.0 <6.5 6.5 2093299

o-Xylene ug/L <5.0 5.0 <6.5 6.5 2093299

Bromoform ug/L <4.0 4.0 <5.2 5.2 2093299

1,1,2,2-Tetrachloroethane ug/L <20 20 <26 26 2093299

1,2,3-Trichloropropane ug/L <6.0 6.0 <7.8 7.8 2093299

1,3-Dichlorobenzene ug/L <5.0 5.0 <6.5 6.5 2093299

1,4-Dichlorobenzene ug/L <5.0 5.0 <6.5 6.5 2093299

1,2-Dichlorobenzene ug/L <5.0 5.0 <6.5 6.5 2093299

Surrogate Recovery (%)

4-Bromofluorobenzene % 91 91 2093299

D4-1,2-Dichloroethane % 102 106 2093299

D8-Toluene % 104 105 2093299

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 13 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (WATER)

Maxxam ID F F 9 6 2 8

Sampling Date 2010/02/24

COC Number N/A

 U n i t s 3-CONDENSATE-3 RDL QC Batch

Volatile Organics

Dichlorodifluoromethane (FREON 12) ug/L <11 11 2093299

Chloromethane ug/L <22 22 2093299

Vinyl Chloride ug/L <4.4 4.4 2093299

Bromomethane ug/L <33 33 2093299

Chloroethane ug/L <11 11 2093299

Trichlorofluoromethane (FREON 11) ug/L <22 22 2093299

Acetone (2-Propanone) ug/L 430 110 2093299

1,1-Dichloroethylene ug/L <11 11 2093299

Iodomethane ug/L <6.6 6.6 2093299

Carbon Disulfide ug/L <5.5 5.5 2093299

Methylene Chloride(Dichloromethane) ug/L 890 11 2093299

1,1-Dichloroethane ug/L <4.4 4.4 2093299

trans-1,2-Dichloroethylene ug/L <11 11 2093299

cis-1,2-Dichloroethylene ug/L <11 11 2093299

Chloroform ug/L <4.4 4.4 2093299

1,2-Dichloroethane ug/L <5.5 5.5 2093299

Methyl Ethyl Ketone (2-Butanone) ug/L <110 110 2093299

1,1,1-Trichloroethane ug/L <5.5 5.5 2093299

Carbon Tetrachloride ug/L <5.5 5.5 2093299

Benzene ug/L <5.5 5.5 2093299

1,1,2-Trichloroethane ug/L <5.5 5.5 2093299

1,2-Dichloropropane ug/L <5.5 5.5 2093299

Trichloroethylene ug/L <5.5 5.5 2093299

Dibromomethane ug/L <5.5 5.5 2093299

Bromodichloromethane ug/L <4.4 4.4 2093299

cis-1,3-Dichloropropene ug/L <4.4 4.4 2093299

trans-1,3-Dichloropropene ug/L <6.6 6.6 2093299

Dibromochloromethane ug/L <4.4 4.4 2093299

Methyl Isobutyl Ketone ug/L <55 55 2093299

Methyl Butyl Ketone (2-Hexanone) ug/L <55 55 2093299

Toluene ug/L 21 5.5 2093299

Ethylene Dibromide ug/L <5.5 5.5 2093299

N/A = Not Applicable

RDL = Reportable Detection Limit

QC Batch = Quality Control Batch

Page 14 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

VOLATILE ORGANICS BY GC/MS (WATER)

Maxxam ID F F 9 6 2 8

Sampling Date 2010/02/24

COC Number N/A

 U n i t s 3-CONDENSATE-3 RDL QC Batch

Tetrachloroethylene ug/L <5.5 5.5 2093299

Chlorobenzene ug/L <5.5 5.5 2093299

1,1,1,2-Tetrachloroethane ug/L <5.5 5.5 2093299

Ethylbenzene ug/L <5.5 5.5 2093299

p+m-Xylene ug/L <5.5 5.5 2093299

Styrene ug/L <5.5 5.5 2093299

o-Xylene ug/L <5.5 5.5 2093299

Bromoform ug/L <4.4 4.4 2093299

1,1,2,2-Tetrachloroethane ug/L <22 22 2093299

1,2,3-Trichloropropane ug/L <6.6 6.6 2093299

1,3-Dichlorobenzene ug/L <5.5 5.5 2093299

1,4-Dichlorobenzene ug/L <5.5 5.5 2093299

1,2-Dichlorobenzene ug/L <5.5 5.5 2093299

Surrogate Recovery (%)

4-Bromofluorobenzene % 92 2093299

D4-1,2-Dichloroethane % 118 2093299

D8-Toluene % 103 2093299

N/A = Not Applicable

QC Batch = Quality Control Batch

Page 15 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

Test Summary

Maxxam ID FF9626 Collected 2010/02/24

Sample ID 1-CONDENSATE-1 Shipped

Matrix Water Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Condensate (8260Cmod) P&T/MS 2093299 N/A 2010/03/09 AGE

Maxxam ID FF9627 Collected 2010/02/24

Sample ID 2-CONDENSATE-2 Shipped

Matrix Water Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Condensate (8260Cmod) P&T/MS 2093299 N/A 2010/03/09 AGE

Maxxam ID FF9628 Collected 2010/02/24

Sample ID 3-CONDENSATE-3 Shipped

Matrix Water Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Condensate (8260Cmod) P&T/MS 2093299 N/A 2010/03/09 AGE

Maxxam ID FF9629 Collected 2010/02/24

Sample ID R1A-M0031-FC2006 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9631 Collected 2010/02/24

Sample ID R1B-M0031-FC1992 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9632 Collected 2010/02/24

Sample ID R1C-M0031-FC1987 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9633 Collected 2010/02/24

Sample ID R1D-M0031-FC1990 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Page 16 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

Test Summary

Maxxam ID FF9634 Collected 2010/02/24

Sample ID R2A-M0031-FC1991 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9635 Collected 2010/02/24

Sample ID R2B-M0031-FC1986 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9636 Collected 2010/02/24

Sample ID R2C-M0031-FC1988 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Maxxam ID FF9637 Collected 2010/02/24

Sample ID R2D-M0031-FC2005 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2095401 N/A 2010/03/08 YYA

Maxxam ID FF9638 Collected 2010/02/24

Sample ID R3A-M0031-FC2004 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2095401 N/A 2010/03/08 YYA

Maxxam ID FF9639 Collected 2010/02/24

Sample ID R3B-M0031-FC1984 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2095401 N/A 2010/03/08 YYA

Maxxam ID FF9640 Collected 2010/02/24

Sample ID R3C-M0031-FC2000 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2095401 N/A 2010/03/08 YYA

Page 17 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

Test Summary

Maxxam ID FF9649 Collected 2010/02/24

Sample ID R3D-M0031-FC1983 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2095401 N/A 2010/03/08 YYA

Maxxam ID FF9664 Collected 2010/02/24

Sample ID BLANK-M0031-FC1989 Shipped

Matrix AIR Received 2010/03/03

Test Description Instrumentation Batch Extracted Analyzed Analyst

VOST Analysis (5041mod) GC/MS 2094877 N/A 2010/03/05 YYA

Page 18 of 25
Eagle Mountain

Maxxam Job #: B025871 Client Project #: 902637

Report Date: 2010/03/15 Project name: NRG ENERGY INC. VIENNA PLANT

GENERAL COMMENTS

VOCVOSTM-A:

WS#2094877

In continuing calibration Std., dichlorodifluoromethane, chloromethane and acetone were below acceptance limit. In reference Std.,

dichlorodifluoromethane was below acceptance limit.

WS#2095401

In continuing calibration std., chloroethane and iodomethane exceed acceptance limit. Area% of acetone was below acceptance limit.

VOC Analysis: Due to high concentrations of target analytes, after volume made up to 43.0mL samples required subsequent dilution. Detection

limits were adjusted accordingly.

Sample FF9626-01: VOC Analysis: Volume of sample received 22.0mL. Final volume 43.0mL. Initial dilution factor 2.0

Sample FF9627-01: VOC Analysis: Volume of sample received 32.3mL. Final volume 43.0mL. Initial dilution factor 1.3

Sample FF9628-01: VOC Analysis: Volume of sample received 38.0mL. Final volume 43.0mL. Initial dilution factor 1.1.

Sample FF9629-01: Acetone is over the calibration range. Data should be considered an estimate only.

Raised DL for 1,2-dichloroethane due to interference.

Sample FF9631-01: Raised DL for 1,2-dichloroethane due to interference.

Sample FF9632-01: Raised DL for 1,2-dichloroethane due to interference.

Sample FF9633-01: Raised DL for 1,2-dichloroethane due to interference.

Sample FF9637-01: 4-Bromofluorobenzene surrogate recovery was below acceptance limit due to interference of high concentration of

non-target compounds. Other surrogates recoveries were acceptable.

Sample FF9640-01: 4-Bromofluorobenzene surrogate recovery was below acceptance limit due to interference of high concentration of

non-target compounds. Other surrogates recoveries were acceptable.

Sample FF9649-01: 4-Bromofluorobenzene and d8-toluene surrogate recoveries were below acceptance limit due to interference of high

concentration of non-target compounds.

Results relate only to the items tested.

Page 19 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2093299 AGE Spiked Blank 4-Bromofluorobenzene 2010/03/09 101 % 76 - 120

D4-1,2-Dichloroethane 2010/03/09 96 % 67 - 122

D8-Toluene 2010/03/09 99 % 75 - 114

Dichlorodifluoromethane (FREON 12) 2010/03/09 91 % 60 - 140

Chloromethane 2010/03/09 98 % 60 - 140

Vinyl Chloride 2010/03/09 97 % 70 - 130

Bromomethane 2010/03/09 99 % 60 - 140

Chloroethane 2010/03/09 98 % 70 - 130

Trichlorofluoromethane (FREON 11) 2010/03/09 96 % 70 - 130

Acetone (2-Propanone) 2010/03/09 89 % 60 - 140

1,1-Dichloroethylene 2010/03/09 105 % 70 - 130

Iodomethane 2010/03/09 108 % N/A

Carbon Disulfide 2010/03/09 122 % N/A

Methylene Chloride(Dichloromethane) 2010/03/09 104 % 70 - 130

1,1-Dichloroethane 2010/03/09 99 % 70 - 130

trans-1,2-Dichloroethylene 2010/03/09 102 % 70 - 130

cis-1,2-Dichloroethylene 2010/03/09 99 % 70 - 130

Chloroform 2010/03/09 98 % 70 - 130

1,2-Dichloroethane 2010/03/09 98 % 70 - 130

Methyl Ethyl Ketone (2-Butanone) 2010/03/09 94 % 60 - 140

1,1,1-Trichloroethane 2010/03/09 98 % 70 - 130

Carbon Tetrachloride 2010/03/09 105 % 70 - 130

Benzene 2010/03/09 103 % 70 - 130

1,1,2-Trichloroethane 2010/03/09 93 % 70 - 130

1,2-Dichloropropane 2010/03/09 107 % 70 - 130

Trichloroethylene 2010/03/09 98 % 70 - 130

Dibromomethane 2010/03/09 98 % N/A

Bromodichloromethane 2010/03/09 99 % 70 - 130

cis-1,3-Dichloropropene 2010/03/09 102 % 70 - 130

trans-1,3-Dichloropropene 2010/03/09 100 % 70 - 130

Dibromochloromethane 2010/03/09 100 % 70 - 130

Methyl Isobutyl Ketone 2010/03/09 105 % 70 - 130

Methyl Butyl Ketone (2-Hexanone) 2010/03/09 102 % N/A

Toluene 2010/03/09 99 % 70 - 130

Ethylene Dibromide 2010/03/09 102 % 70 - 130

Tetrachloroethylene 2010/03/09 97 % 70 - 130

Chlorobenzene 2010/03/09 98 % 70 - 130

1,1,1,2-Tetrachloroethane 2010/03/09 100 % 70 - 130

Ethylbenzene 2010/03/09 101 % 70 - 130

p+m-Xylene 2010/03/09 99 % 70 - 130

Styrene 2010/03/09 108 % 70 - 130

o-Xylene 2010/03/09 96 % 70 - 130

Bromoform 2010/03/09 84 % 70 - 130

1,1,2,2-Tetrachloroethane 2010/03/09 98 % 70 - 130

1,2,3-Trichloropropane 2010/03/09 89 % N/A

1,3-Dichlorobenzene 2010/03/09 99 % 70 - 130

1,4-Dichlorobenzene 2010/03/09 99 % 70 - 130

1,2-Dichlorobenzene 2010/03/09 99 % 70 - 130

Method Blank 4-Bromofluorobenzene 2010/03/09 92 % 76 - 120

D4-1,2-Dichloroethane 2010/03/09 94 % 67 - 122

D8-Toluene 2010/03/09 105 % 75 - 114

Dichlorodifluoromethane (FREON 12) 2010/03/09 ND, RDL=1.0 ug/L

Chloromethane 2010/03/09 ND, RDL=2.0 ug/L

Vinyl Chloride 2010/03/09 ND, RDL=0.40 ug/L

Bromomethane 2010/03/09 ND, RDL=3.0 ug/L

Page 20 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2093299 AGE Method Blank Chloroethane 2010/03/09 ND, RDL=1.0 ug/L

Trichlorofluoromethane (FREON 11) 2010/03/09 ND, RDL=2.0 ug/L

Acetone (2-Propanone) 2010/03/09 ND, RDL=10 ug/L

1,1-Dichloroethylene 2010/03/09 ND, RDL=1.0 ug/L

Iodomethane 2010/03/09 ND, RDL=0.60 ug/L

Carbon Disulfide 2010/03/09 ND, RDL=0.50 ug/L

Methylene Chloride(Dichloromethane) 2010/03/09 ND, RDL=1.0 ug/L

1,1-Dichloroethane 2010/03/09 ND, RDL=0.40 ug/L

trans-1,2-Dichloroethylene 2010/03/09 ND, RDL=1.0 ug/L

cis-1,2-Dichloroethylene 2010/03/09 ND, RDL=1.0 ug/L

Chloroform 2010/03/09 ND, RDL=0.40 ug/L

1,2-Dichloroethane 2010/03/09 ND, RDL=0.50 ug/L

Methyl Ethyl Ketone (2-Butanone) 2010/03/09 ND, RDL=10 ug/L

1,1,1-Trichloroethane 2010/03/09 ND, RDL=0.50 ug/L

Carbon Tetrachloride 2010/03/09 ND, RDL=0.50 ug/L

Benzene 2010/03/09 ND, RDL=0.50 ug/L

1,1,2-Trichloroethane 2010/03/09 ND, RDL=0.50 ug/L

1,2-Dichloropropane 2010/03/09 ND, RDL=0.50 ug/L

Trichloroethylene 2010/03/09 ND, RDL=0.50 ug/L

Dibromomethane 2010/03/09 ND, RDL=0.50 ug/L

Bromodichloromethane 2010/03/09 ND, RDL=0.40 ug/L

cis-1,3-Dichloropropene 2010/03/09 ND, RDL=0.40 ug/L

trans-1,3-Dichloropropene 2010/03/09 ND, RDL=0.60 ug/L

Dibromochloromethane 2010/03/09 ND, RDL=0.40 ug/L

Methyl Isobutyl Ketone 2010/03/09 ND, RDL=5.0 ug/L

Methyl Butyl Ketone (2-Hexanone) 2010/03/09 ND, RDL=5.0 ug/L

Toluene 2010/03/09 ND, RDL=0.50 ug/L

Ethylene Dibromide 2010/03/09 ND, RDL=0.50 ug/L

Tetrachloroethylene 2010/03/09 ND, RDL=0.50 ug/L

Chlorobenzene 2010/03/09 ND, RDL=0.50 ug/L

1,1,1,2-Tetrachloroethane 2010/03/09 ND, RDL=0.50 ug/L

Ethylbenzene 2010/03/09 ND, RDL=0.50 ug/L

p+m-Xylene 2010/03/09 ND, RDL=0.50 ug/L

Styrene 2010/03/09 ND, RDL=0.50 ug/L

o-Xylene 2010/03/09 ND, RDL=0.50 ug/L

Bromoform 2010/03/09 ND, RDL=0.40 ug/L

1,1,2,2-Tetrachloroethane 2010/03/09 ND, RDL=2.0 ug/L

1,2,3-Trichloropropane 2010/03/09 ND, RDL=0.60 ug/L

1,3-Dichlorobenzene 2010/03/09 ND, RDL=0.50 ug/L

1,4-Dichlorobenzene 2010/03/09 ND, RDL=0.50 ug/L

1,2-Dichlorobenzene 2010/03/09 ND, RDL=0.50 ug/L

2094877 YYA Spiked Blank Bromofluorobenzene 2010/03/05 98 % 57 - 118

D10-Ethylbenzene (FS) 2010/03/05 101 % 21 - 192

D4-1,2-Dichloroethane 2010/03/05 98 % 22 - 159

D8-Toluene 2010/03/05 101 % 67 - 125

Dichlorodifluoromethane (FREON 12) 2010/03/05 35 ( 1 ) % 50 - 150

Chloromethane 2010/03/05 61 % 50 - 150

Vinyl Chloride 2010/03/05 76 % 50 - 150

Bromomethane 2010/03/05 102 % 50 - 150

Chloroethane 2010/03/05 83 % 50 - 150

Trichlorofluoromethane (FREON 11) 2010/03/05 83 % 50 - 150

Acetone (2-Propanone) 2010/03/05 51 % 50 - 150

1,1-Dichloroethylene 2010/03/05 85 % 50 - 150

Iodomethane 2010/03/05 132 % N/A

Carbon Disulfide 2010/03/05 77 % 50 - 150

Page 21 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2094877 YYA Spiked Blank Methylene Chloride(Dichloromethane) 2010/03/05 92 % 50 - 150

1,1-Dichloroethane 2010/03/05 92 % 50 - 150

trans-1,2-Dichloroethylene 2010/03/05 88 % 50 - 150

cis-1,2-Dichloroethylene 2010/03/05 97 % 50 - 150

Chloroform 2010/03/05 95 % 50 - 150

1,2-Dichloroethane 2010/03/05 92 % 50 - 150

Methyl Ethyl Ketone (2-Butanone) 2010/03/05 74 % 50 - 150

1,1,1-Trichloroethane 2010/03/05 94 % 50 - 150

Carbon Tetrachloride 2010/03/05 96 % 50 - 150

Benzene 2010/03/05 95 % 50 - 150

1,1,2-Trichloroethane 2010/03/05 98 % 50 - 150

1,2-Dichloropropane 2010/03/05 97 % 50 - 150

Trichloroethylene 2010/03/05 92 % 50 - 150

Dibromomethane 2010/03/05 94 % 50 - 150

Bromodichloromethane 2010/03/05 97 % 50 - 150

cis-1,3-Dichloropropene 2010/03/05 101 % 50 - 150

trans-1,3-Dichloropropene 2010/03/05 109 % 50 - 150

Dibromochloromethane 2010/03/05 101 % 50 - 150

Methyl Isobutyl Ketone 2010/03/05 94 % 50 - 150

Methyl Butyl Ketone (2-Hexanone) 2010/03/05 101 % 50 - 150

Toluene 2010/03/05 98 % 50 - 150

Ethylene Dibromide 2010/03/05 97 % 50 - 150

Tetrachloroethylene 2010/03/05 98 % 50 - 150

Chlorobenzene 2010/03/05 97 % 50 - 150

1,1,1,2-Tetrachloroethane 2010/03/05 102 % 50 - 150

Ethylbenzene 2010/03/05 97 % 50 - 150

m / p-Xylene 2010/03/05 98 % 50 - 150

Styrene 2010/03/05 100 % 50 - 150

o-Xylene 2010/03/05 98 % 50 - 150

Bromoform 2010/03/05 105 % 50 - 150

1,1,2,2-Tetrachloroethane 2010/03/05 106 % 50 - 150

1,2,3-Trichloropropane 2010/03/05 90 % 50 - 150

1,3-Dichlorobenzene 2010/03/05 99 % 50 - 150

1,4-Dichlorobenzene 2010/03/05 100 % 50 - 150

1,2-Dichlorobenzene 2010/03/05 98 % 50 - 150

Method Blank Bromofluorobenzene 2010/03/05 92 % 57 - 118

D10-Ethylbenzene (FS) 2010/03/05 102 % 21 - 192

D4-1,2-Dichloroethane 2010/03/05 100 % 22 - 159

D8-Toluene 2010/03/05 102 % 67 - 125

Dichlorodifluoromethane (FREON 12) 2010/03/05 ND, RDL=0.02 ug

Chloromethane 2010/03/05 ND, RDL=0.02 ug

Vinyl Chloride 2010/03/05 ND, RDL=0.01 ug

Bromomethane 2010/03/05 ND, RDL=0.02 ug

Chloroethane 2010/03/05 ND, RDL=0.009 ug

Trichlorofluoromethane (FREON 11) 2010/03/05 ND, RDL=0.01 ug

Acetone (2-Propanone) 2010/03/05 ND, RDL=0.05 ug

1,1-Dichloroethylene 2010/03/05 ND, RDL=0.01 ug

Iodomethane 2010/03/05 ND, RDL=0.02 ug

Carbon Disulfide 2010/03/05 ND, RDL=0.03 ug

Methylene Chloride(Dichloromethane) 2010/03/05 ND, RDL=0.02 ug

1,1-Dichloroethane 2010/03/05 ND, RDL=0.01 ug

trans-1,2-Dichloroethylene 2010/03/05 ND, RDL=0.01 ug

cis-1,2-Dichloroethylene 2010/03/05 ND, RDL=0.01 ug

Chloroform 2010/03/05 ND, RDL=0.01 ug

1,2-Dichloroethane 2010/03/05 ND, RDL=0.007 ug

Page 22 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2094877 YYA Method Blank Methyl Ethyl Ketone (2-Butanone) 2010/03/05 ND, RDL=0.04 ug

1,1,1-Trichloroethane 2010/03/05 ND, RDL=0.01 ug

Carbon Tetrachloride 2010/03/05 ND, RDL=0.02 ug

Benzene 2010/03/05 ND, RDL=0.009 ug

1,1,2-Trichloroethane 2010/03/05 ND, RDL=0.02 ug

1,2-Dichloropropane 2010/03/05 ND, RDL=0.01 ug

Trichloroethylene 2010/03/05 ND, RDL=0.01 ug

Dibromomethane 2010/03/05 ND, RDL=0.01 ug

Bromodichloromethane 2010/03/05 ND, RDL=0.01 ug

cis-1,3-Dichloropropene 2010/03/05 ND, RDL=0.01 ug

trans-1,3-Dichloropropene 2010/03/05 ND, RDL=0.007 ug

Dibromochloromethane 2010/03/05 ND, RDL=0.009 ug

Methyl Isobutyl Ketone 2010/03/05 ND, RDL=0.02 ug

Methyl Butyl Ketone (2-Hexanone) 2010/03/05 ND, RDL=0.03 ug

Toluene 2010/03/05 ND, RDL=0.01 ug

Ethylene Dibromide 2010/03/05 ND, RDL=0.01 ug

Tetrachloroethylene 2010/03/05 ND, RDL=0.02 ug

Chlorobenzene 2010/03/05 ND, RDL=0.01 ug

1,1,1,2-Tetrachloroethane 2010/03/05 ND, RDL=0.01 ug

Ethylbenzene 2010/03/05 ND, RDL=0.01 ug

m / p-Xylene 2010/03/05 ND, RDL=0.02 ug

Styrene 2010/03/05 ND, RDL=0.01 ug

o-Xylene 2010/03/05 ND, RDL=0.02 ug

Bromoform 2010/03/05 ND, RDL=0.01 ug

1,1,2,2-Tetrachloroethane 2010/03/05 ND, RDL=0.01 ug

1,2,3-Trichloropropane 2010/03/05 ND, RDL=0.02 ug

1,3-Dichlorobenzene 2010/03/05 ND, RDL=0.02 ug

1,4-Dichlorobenzene 2010/03/05 ND, RDL=0.02 ug

1,2-Dichlorobenzene 2010/03/05 ND, RDL=0.02 ug

2095401 YYA Spiked Blank Bromofluorobenzene 2010/03/08 92 % 57 - 118

D10-Ethylbenzene (FS) 2010/03/08 110 % 21 - 192

D4-1,2-Dichloroethane 2010/03/08 102 % 22 - 159

D8-Toluene 2010/03/08 101 % 67 - 125

Dichlorodifluoromethane (FREON 12) 2010/03/08 106 % 50 - 150

Chloromethane 2010/03/08 113 % 50 - 150

Vinyl Chloride 2010/03/08 124 % 50 - 150

Bromomethane 2010/03/08 138 % 50 - 150

Chloroethane 2010/03/08 115 % 50 - 150

Trichlorofluoromethane (FREON 11) 2010/03/08 121 % 50 - 150

Acetone (2-Propanone) 2010/03/08 71 % 50 - 150

1,1-Dichloroethylene 2010/03/08 109 % 50 - 150

Iodomethane 2010/03/08 137 % N/A

Carbon Disulfide 2010/03/08 100 % 50 - 150

Methylene Chloride(Dichloromethane) 2010/03/08 99 % 50 - 150

1,1-Dichloroethane 2010/03/08 101 % 50 - 150

trans-1,2-Dichloroethylene 2010/03/08 98 % 50 - 150

cis-1,2-Dichloroethylene 2010/03/08 108 % 50 - 150

Chloroform 2010/03/08 101 % 50 - 150

1,2-Dichloroethane 2010/03/08 101 % 50 - 150

Methyl Ethyl Ketone (2-Butanone) 2010/03/08 91 % 50 - 150

1,1,1-Trichloroethane 2010/03/08 100 % 50 - 150

Carbon Tetrachloride 2010/03/08 109 % 50 - 150

Benzene 2010/03/08 101 % 50 - 150

1,1,2-Trichloroethane 2010/03/08 98 % 50 - 150

1,2-Dichloropropane 2010/03/08 104 % 50 - 150

Page 23 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2095401 YYA Spiked Blank Trichloroethylene 2010/03/08 94 % 50 - 150

Dibromomethane 2010/03/08 93 % 50 - 150

Bromodichloromethane 2010/03/08 103 % 50 - 150

cis-1,3-Dichloropropene 2010/03/08 106 % 50 - 150

trans-1,3-Dichloropropene 2010/03/08 110 % 50 - 150

Dibromochloromethane 2010/03/08 102 % 50 - 150

Methyl Isobutyl Ketone 2010/03/08 115 % 50 - 150

Methyl Butyl Ketone (2-Hexanone) 2010/03/08 118 % 50 - 150

Toluene 2010/03/08 100 % 50 - 150

Ethylene Dibromide 2010/03/08 97 % 50 - 150

Tetrachloroethylene 2010/03/08 96 % 50 - 150

Chlorobenzene 2010/03/08 99 % 50 - 150

1,1,1,2-Tetrachloroethane 2010/03/08 103 % 50 - 150

Ethylbenzene 2010/03/08 100 % 50 - 150

m / p-Xylene 2010/03/08 104 % 50 - 150

Styrene 2010/03/08 101 % 50 - 150

o-Xylene 2010/03/08 105 % 50 - 150

Bromoform 2010/03/08 104 % 50 - 150

1,1,2,2-Tetrachloroethane 2010/03/08 115 % 50 - 150

1,2,3-Trichloropropane 2010/03/08 96 % 50 - 150

1,3-Dichlorobenzene 2010/03/08 102 % 50 - 150

1,4-Dichlorobenzene 2010/03/08 101 % 50 - 150

1,2-Dichlorobenzene 2010/03/08 101 % 50 - 150

Method Blank Bromofluorobenzene 2010/03/08 86 % 57 - 118

D10-Ethylbenzene (FS) 2010/03/08 105 % 21 - 192

D4-1,2-Dichloroethane 2010/03/08 103 % 22 - 159

D8-Toluene 2010/03/08 104 % 67 - 125

Dichlorodifluoromethane (FREON 12) 2010/03/08 ND, RDL=0.02 ug

Chloromethane 2010/03/08 ND, RDL=0.02 ug

Vinyl Chloride 2010/03/08 ND, RDL=0.01 ug

Bromomethane 2010/03/08 ND, RDL=0.02 ug

Chloroethane 2010/03/08 ND, RDL=0.009 ug

Trichlorofluoromethane (FREON 11) 2010/03/08 ND, RDL=0.01 ug

Acetone (2-Propanone) 2010/03/08 ND, RDL=0.05 ug

1,1-Dichloroethylene 2010/03/08 ND, RDL=0.01 ug

Iodomethane 2010/03/08 ND, RDL=0.02 ug

Carbon Disulfide 2010/03/08 ND, RDL=0.03 ug

Methylene Chloride(Dichloromethane) 2010/03/08 ND, RDL=0.02 ug

1,1-Dichloroethane 2010/03/08 ND, RDL=0.01 ug

trans-1,2-Dichloroethylene 2010/03/08 ND, RDL=0.01 ug

cis-1,2-Dichloroethylene 2010/03/08 ND, RDL=0.01 ug

Chloroform 2010/03/08 ND, RDL=0.01 ug

1,2-Dichloroethane 2010/03/08 ND, RDL=0.007 ug

Methyl Ethyl Ketone (2-Butanone) 2010/03/08 ND, RDL=0.04 ug

1,1,1-Trichloroethane 2010/03/08 ND, RDL=0.01 ug

Carbon Tetrachloride 2010/03/08 ND, RDL=0.02 ug

Benzene 2010/03/08 ND, RDL=0.009 ug

1,1,2-Trichloroethane 2010/03/08 ND, RDL=0.02 ug

1,2-Dichloropropane 2010/03/08 ND, RDL=0.01 ug

Trichloroethylene 2010/03/08 ND, RDL=0.01 ug

Dibromomethane 2010/03/08 ND, RDL=0.01 ug

Bromodichloromethane 2010/03/08 ND, RDL=0.01 ug

cis-1,3-Dichloropropene 2010/03/08 ND, RDL=0.01 ug

trans-1,3-Dichloropropene 2010/03/08 ND, RDL=0.007 ug

Dibromochloromethane 2010/03/08 ND, RDL=0.009 ug

Page 24 of 25
Eagle Mountain

Attention: Mark Carlson 

Client Project #: 902637

P.O. #:

Project name: NRG ENERGY INC. VIENNA PLANT

Quality Assurance Report (Continued)

Maxxam Job Number: GB025871

QA/QC Date

Batch Analyzed

Num Init QC Type Parameter yyyy/mm/dd Value %Recovery Units QC Limits

2095401 YYA Method Blank Methyl Isobutyl Ketone 2010/03/08 ND, RDL=0.02 ug

Methyl Butyl Ketone (2-Hexanone) 2010/03/08 ND, RDL=0.03 ug

Toluene 2010/03/08 ND, RDL=0.01 ug

Ethylene Dibromide 2010/03/08 ND, RDL=0.01 ug

Tetrachloroethylene 2010/03/08 ND, RDL=0.02 ug

Chlorobenzene 2010/03/08 ND, RDL=0.01 ug

1,1,1,2-Tetrachloroethane 2010/03/08 ND, RDL=0.01 ug

Ethylbenzene 2010/03/08 ND, RDL=0.01 ug

m / p-Xylene 2010/03/08 ND, RDL=0.02 ug

Styrene 2010/03/08 ND, RDL=0.01 ug

o-Xylene 2010/03/08 ND, RDL=0.02 ug

Bromoform 2010/03/08 ND, RDL=0.01 ug

1,1,2,2-Tetrachloroethane 2010/03/08 ND, RDL=0.01 ug

1,2,3-Trichloropropane 2010/03/08 ND, RDL=0.02 ug

1,3-Dichlorobenzene 2010/03/08 ND, RDL=0.02 ug

1,4-Dichlorobenzene 2010/03/08 ND, RDL=0.02 ug

1,2-Dichlorobenzene 2010/03/08 ND, RDL=0.02 ug

Spiked Blank: A blank matrix to which a known amount of the analyte has been added. Used to evaluate analyte recovery.

Method Blank: A blank matrix containing all reagents used in the analytical procedure. Used to identify laboratory contamination.

Surrogate: A pure or isotopically labeled compound whose behavior mirrors the analytes of interest. Used to evaluate extraction efficiency.

( 1 ) Recovery or RPD for this parameter is outside control limits. The overall quality control for this analysis meets acceptability criteria.

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