# EMSI

Client: NRG Date: 2/24/2010 mm/dd/yy Unit: 8 Compounds: ST640‐01 Facility: Vienna Operator: N. Presutti Description: ICR Methane Project #: 0 

## Recovery Field Study Methane Retention A rea Measured Spike Pre
­ Spike Recovery (min) Conc. (ppm) (ppm) Conc. (ppm) Value ( R ) Validity Spike Trial 1 5.533 28.4058 6.16 5.00 0.72 1.087 Valid Spike Trial 2 5.533 14.8143 3.54 3.00 0.72 0.939 Valid Spike Trial 3 5.533 26.4294 5.79 5.00 0.72 1.013 Valid 

### A verages Methane Results Units Run 1 Run 2 Run 3 Average ppm w 1.23 3.88 0.72 1.94 ppmw @ 7% O 2 1.22 3.86 0.72 1.93 ppmd 1.33 4.21 0.78 2.11 ppmd @ 7% O 2 1.32 4.18 0.78 2.09 lb/mmBTU 7.8591E‐04 2.4843E‐03 4.6169E‐04 1.2440E‐03 

# Gas Chromatography Analysis

# EMSI

Client: NRG Date: 2/24/2010 mm/dd/yy Unit: 8 Version: ST640‐01 Facility: Vienna Operator: N. Presutti Description: ICR Methane Project #: 0

Methane Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 5.620 4.2703 1.23 50 1 200 20 Trial 2 5.620 4.2703 1.23 50 1 200 20 Trial 3 5.620 4.2703 1.23 50 1 200 20

A ve. 5.620 4.2703 1.23 50 1 200 20 Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. 

# Gas Chromatography Analysis

Temperature Program

Temperature Program

Temperature Program

# EMSI

Client: NRG Date: 2/24/2010 mm/dd/yy Unit: 8 Version: ST640‐01 Facility: Vienna Operator: N. Presutti Description: ICR Methane Project #: 0

Methane Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 5.620 16.5282 3.88 50 1 200 20 Trial 2 5.620 16.5282 3.88 50 1 200 20 Trial 3 5.620 16.5282 3.88 50 1 200 20

A ve. 5.620 16.5282 3.88 50 1 200 20 Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. Temperature Program

Temperature Program

Temperature Program 

# Gas Chromatography Analysis

# EMSI

Client: NRG Date: 2/24/2010 mm/dd/yy Unit: 8 Version: ST640‐01 Facility: Vienna Operator: N. Presutti Description: ICR Methane Project #: 0

Methane Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 5.620 2.2845 0.72 50 1 200 20 Trial 2 5.620 2.2845 0.72 50 1 200 20 Trial 3 5.620 2.2845 0.72 50 1 200 20

A ve. 5.620 2.2845 0.72 50 1 200 20 Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. Compound Retention A rea Conc. Carrier gas (min) (ppmw) Start ( o C) Hold (min) End ( o C) Flow (psi) Trial 1 Trial 2 Trial 3

A ve. 

# Gas Chromatography Analysis

Temperature Program

Temperature Program

Temperature Program

# EMSI

Client: NRG Date: 2/24/2010 mm/dd/y y Unit: 8 Version: ST640‐01 Facility: Vienna Operator: N. Presutti Description: ICR Methane Project #: 0


# Methane 2/24/2010 Low (10ppm) Retention Conc. Area RF Calc. Conc. Area agreement (%) 1 5.62 10 71.3480 7.13 13.47 0.00 2 5.62 10 71.3480 7.13 13.47 0.00 3 5.62 10 71.3480 7.13 13.47 0.00 Ave. 5.62 10 71.3480 7.13 Mid (100ppm) Retention Conc. Area RF 1 5.60 100 1278.8270 12.79 156.79 0.00 2 5.60 100 1278.8270 12.79 156.79 0.00 3 5.60 100 1278.8270 12.79 156.79 0.00 Ave. 5.60 100 1278.8270 12.79 High (500ppm) Retention Conc. Area RF 1 5.62 500 7318.8190 14.64 691.19 0.00 2 5.62 500 7318.8190 14.64 691.19 0.00 3 5.62 500 7318.8190 14.64 691.19 0.00 Ave. 5.62 500 7318.8190 14.64 Date Calibrated: 

# Gas Chromatography Analysis

Methane y = 0.2682x 0.8401 R 2 = 0.9984

0 100 200 300 400 500 600

0.0000 1000.000 0 2000.000 0 3000.000 0 4000.000 0 5000.000 0 6000.000 0 7000.000 0 8000.000 0 AreaConc.Lab name: Eagle Mountain Scientific Client: NRG - Vienna Client ID: 902612 Analysis date: 02/24/2010 18:26:09 Method: Syringe Injection Column: RESTEK 15METER MXT-1 Operator: Nicholas Presutti Temperature program: Init temp Hold Ramp Final temp 50.00 2.000 20.000 200.00 Events: Time Event 0.000 ZERO 0.000 SOUND 0.200 G ON (ValveRotate)
-1.087 9.407 -/0.140

-/0.796 -/0.966 -/1.036

-/1.513

Methane/1.896

-/10.180 -/10.306 -/10.336 -/10.363 -/10.373 -/10.493 -/10.516 -/10.573 -/10.593 -/10.606 -/10.633 -/10.736 -/10.743 -/10.783 -/10.796 -/10.860 -/10.876 -/10.946 -/10.996 -/11.010 -/11.026 -/11.033 -/11.076 -/11.090 -/11.100 1

2

3

4

5

6

7

8

9

10

11

Component Retention Area External Units Methane 1.896 4.2703 0.3707 ppm 4.2703 0.3707 Lab name: SRI Instruments Client: Valued Customer Client ID: N2024 Analysis date: 02/24/2010 18:01:44 Method: Syringe Injection Column: RESTEK 15METER MXT-1 Operator: Temperature program: Init temp Hold Ramp Final temp 50.00 2.000 20.000 200.00 Events: Time Event 0.000 ZERO
-1.884 10.554

-/1.046

-/1.493

Methane/1.923

-/10.300 -/10.310 -/10.340 -/10.380 -/10.463 -/10.476 -/10.490 -/10.513 -/10.530 -/10.576 -/10.613 -/10.636 -/10.683 -/10.703 -/10.743 -/10.770 -/10.810 -/10.850 -/10.880 -/10.933 -/10.976 -/11.006 -/11.020 -/11.056 -/11.080 1

2

3

4

5

6

7

8

9

10

11

Component Retention Area External Units Methane 1.923 16.5282 1.4347 ppm 16.5282 1.4347 Lab name: SRI Instruments Client: Valued Customer Client ID: N2024 Analysis date: 02/24/2010 19:18:19 Method: Syringe Injection Column: RESTEK 15METER MXT-1 Operator: Temperature program: Init temp Hold Ramp Final temp Events: Time Event -0.670 9.487 -/0.140

-/1.180

-/1.573

Methane/1.946 1

2

3

4

5

6

7

8

9

10

11

Component Retention Area External Units Methane 1.946 2.2845 0.1983 ppm 2.2845 0.1983Calibration file: C:\peak382-32bit\Vienna Methane.cal AREA

AMOUNT INJECTED 5760

0 0.000 500.000 1 2

A vg slope of curve: 11.52 Y-axis intercept: 0.00 Linearity: 1.00 Number of levels: 3 SD/rel SD of CF's: 3.9/33.9 Y=11.5202X r2: 0.9997 Last calibrated: Mon Jun 07 06:35:08 2010 Lvl. Area/ht. Amount CF Current Previous #1 Previous #2 1 71.348 10.000 7.135 71.348 N/A N/A 2 1278.827 100.000 12.788 1278.827 N/A N/A 3 7318.819 500.000 14.638 7318.819 N/A N/A