## No problems were encountered during analysis of this workorder, except if noted in this report.

Samples were not filtered in the field for dissolved metals; samples were lab filtered. 2005 N. Center Ave. Somerset PA 15501

814-443-1671 814-445-6666 FAX:814-445-6729

Client: GenOn ENERGY INC. - KEYSTONE STATION 

## CASE NARRATIVE Project: Keystone 611 W
Lab Order: G1403C32

Legend: ND - Not Detected at the Quantitation Limit S - Spike Recovery outside accepted recovery limits
J - Indicates an estimated value R - RPD outside accepted recovery limits U - The analyte was not detected at or above the listed E - Value above quantitation range concentration, which is below the laboratory quantitation limit ** - Value exceeds Action Limit B - Analyte detected in the associated Method Blank H - Method Hold Time Exceeded
Q - Qualifier QL - Quantitation Limit DF - Dilution Factor MCL - Contaminant Limit



### Page 1 of 5Physical Tests SM 2540D Analyst: KLS

Total suspended solids < 1 1 mg/L 1 03/25/2014 10:15

Inorganic Non-Metals SM 2540 C Analyst: KLS
Total dissolved solids 23900 20 mg/L 1 03/25/2014 10:16

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day < 2 2 mg/L 1.5 03/26/2014 05:59

Inorganic Non-Metals USGS I-1187-85 Analyst: CLS
Chloride 15000 1000 mg/L 200 03/25/2014 10:14

Inorganic Metals EPA 200.8 Analyst: RLD Selenium, dissolved 0.041 0.005 mg/L 5 04/02/2014 11:35

Inorganic Metals EPA 200.8 Analyst: RLD
Arsenic < 0.005 0.005 mg/L 5 04/02/2014 11:30
Chromium < 0.005 0.005 mg/L 1 03/31/2014 21:21
Nickel 0.0104 0.0025 mg/L 5 04/02/2014 11:30
Selenium 0.038 0.005 mg/L 5 04/02/2014 11:30

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 03/28/2014 13:19

Inorganic Metals SM 3112B Analyst: RXS Mercury < 0.0002 0.0002 mg/L 1 03/31/2014 09:24

Inorganic Metals EPA 200.7 Analyst: GMG
Aluminum < 0.1 0.1 mg/L 1 03/28/2014 13:16 Beryllium < 0.001 0.001 mg/L 1 03/28/2014 13:16
Boron 0.11 0.05 mg/L 1 03/28/2014 13:16
Cadmium < 0.002 0.002 mg/L 1 03/28/2014 13:16 Copper < 0.01 0.01 mg/L 1 03/28/2014 13:16



# Laboratory Results

2005 N. Center Ave. Somerset PA 15501

814-443-1671 814-445-6666 FAX:814-445-6729

Client: GenOn ENERGY INC. - KEYSTONE STATION Client Sample ID: Outfall 101
Lab Order: G1403C32 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403C32-001 Collection Date: 03/24/2014 09:15
Matrix: Aqueous Received Date: 03/24/2014 17:21
Analyses Result QL Q Units DF Date Analyzed



### Page 2 of 5Iron 0.05 0.05 mg/L 1 03/28/2014 13:16

Lead < 0.02 0.02 mg/L 1 03/28/2014 13:16 Manganese 0.14 0.01 mg/L 1 03/28/2014 13:16
Silver < 0.005 0.005 mg/L 1 03/28/2014 13:16
Zinc < 0.01 0.01 mg/L 1 03/28/2014 13:16

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium < 0.02 0.02 mg/L 1 04/03/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: MTM
Oil & Grease < 5 5 mg/L 1 04/01/2014 15:00
NOTES: S - Spike recovery indicates a possible matrix effect. The method is in control as indicated by the LCS. 

# Laboratory Results

2005 N. Center Ave. Somerset PA 15501

814-443-1671 814-445-6666 FAX:814-445-6729

Client: GenOn ENERGY INC. - KEYSTONE STATION Client Sample ID: Outfall 101
Lab Order: G1403C32 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403C32-001 Collection Date: 03/24/2014 09:15
Matrix: Aqueous Received Date: 03/24/2014 17:21
Analyses Result QL Q Units DF Date Analyzed



### Page 3 of 5Inorganic Non-Metals SM 2540 C Analyst: KLS

Total dissolved solids 27700 100 mg/L 5 03/25/2014 10:16

Physical Tests SM 2540D Analyst: KLS Total suspended solids 4940 100 mg/L 20 03/25/2014 10:15

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day 8 3 mg/L 3 03/26/2014 05:59

Inorganic Metals USGS I-1230-85 Analyst: MLR
Hexavalent Chromium < 0.020 0.020 mg/L 1 03/24/2014 18:39

Inorganic Non-Metals USGS I-1187-85 Analyst: CLS
Chloride 18000 1000 mg/L 200 03/25/2014 10:14

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 03/28/2014 13:21 Selenium, dissolved 0.10 0.02 mg/L 1 03/28/2014 13:21

Inorganic Metals SM 3112B Analyst: RXS Mercury < 0.100 0.100 mg/L 500 03/31/2014 09:26

Inorganic Metals EPA 200.7 Analyst: JEK
Aluminum 17.1 1.0 mg/L 1 04/01/2014 23:22
Arsenic < 0.20 0.20 mg/L 1 04/01/2014 23:22 Beryllium < 0.010 0.010 mg/L 1 04/01/2014 23:22
Boron 352 5.00 mg/L 10 04/02/2014 11:07
Cadmium < 0.020 0.020 mg/L 1 04/01/2014 23:22
Chromium < 0.10 0.10 mg/L 1 04/01/2014 23:22 Copper 0.23 0.10 mg/L 1 04/01/2014 23:22
Iron 73.3 0.50 mg/L 1 04/01/2014 23:22
Lead < 0.20 0.20 mg/L 1 04/01/2014 23:22 Manganese 279 0.10 mg/L 1 04/01/2014 23:22



# Laboratory Results

2005 N. Center Ave. Somerset PA 15501

814-443-1671 814-445-6666 FAX:814-445-6729

Client: GenOn ENERGY INC. - KEYSTONE STATION Client Sample ID: FGD Influent
Lab Order: G1403C32 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403C32-002 Collection Date: 03/24/2014 09:00
Matrix: Aqueous Received Date: 03/24/2014 17:21
Analyses Result QL Q Units DF Date Analyzed



### Page 4 of 5Nickel 1.65 0.10 mg/L 1 04/01/2014 23:22

Selenium 0.40 0.20 mg/L 1 04/01/2014 23:22
Silver < 0.050 0.050 mg/L 1 04/01/2014 23:22
Zinc 0.79 0.10 mg/L 1 04/01/2014 23:22

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium 0.09 0.02 mg/L 1 04/03/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: MTM
Oil & Grease < 17 17 mg/L 3.45 04/01/2014 14:05



# Laboratory Results

2005 N. Center Ave. Somerset PA 15501

814-443-1671 814-445-6666 FAX:814-445-6729

Client: GenOn ENERGY INC. - KEYSTONE STATION Client Sample ID: FGD Influent
Lab Order: G1403C32 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403C32-002 Collection Date: 03/24/2014 09:00
Matrix: Aqueous Received Date: 03/24/2014 17:21
Analyses Result QL Q Units DF Date Analyzed



### Page 5 of 5