## No problems were encountered during analysis of this workorder, except if noted in this report. 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: G1404910

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 04/15/2014 15:01

Inorganic Non-Metals SM 2540 C Analyst: KLS
Total dissolved solids 25800 20 mg/L 1 04/15/2014 15:01

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day < 2 2 mg/L 1.5 04/16/2014 06:19

Inorganic Non-Metals USGS I-1187-85 Analyst: SEF
Chloride 13100 1000 mg/L 200 04/17/2014 11:38

Inorganic Metals EPA 200.8 Analyst: RLD Selenium, dissolved 0.047 0.005 mg/L 5 04/18/2014 12:51

Inorganic Metals EPA 200.8 Analyst: RLD
Arsenic 0.002 0.001 mg/L 1 04/17/2014 13:07
Chromium < 0.005 0.005 mg/L 1 04/17/2014 13:07
Nickel 0.0042 0.0005 mg/L 1 04/17/2014 13:07
Selenium 0.047 0.005 mg/L 5 04/18/2014 12:45

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 04/17/2014 17:24

Inorganic Metals SM 3112B Analyst: JEK Mercury < 0.0002 0.0002 mg/L 1 04/17/2014 09:27

Inorganic Metals EPA 200.7 Analyst: GMG
Aluminum < 0.1 0.1 mg/L 1 04/17/2014 17:21 Beryllium < 0.001 0.001 mg/L 1 04/17/2014 17:21
Boron 228 2.50 mg/L 50 04/18/2014 13:40
Cadmium < 0.002 0.002 mg/L 1 04/17/2014 17:21 Copper 0.01 0.01 mg/L 1 04/17/2014 17:21



# 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: G1404910 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404910-001 Collection Date: 04/14/2014 09:15
Matrix: Aqueous Received Date: 04/14/2014 18:28
Analyses Result QL Q Units DF Date Analyzed



### Page 2 of 5Iron < 0.05 0.05 mg/L 1 04/17/2014 17:21

Lead < 0.02 0.02 mg/L 1 04/17/2014 17:21 Manganese 4.29 0.01 mg/L 1 04/17/2014 17:21
Silver < 0.005 0.005 mg/L 1 04/18/2014 15:50
Zinc < 0.01 0.01 mg/L 1 04/17/2014 17:21

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium < 0.02 0.02 mg/L 1 04/21/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: AEO
Oil & Grease < 5 5 mg/L 1 04/16/2014 14:42



# 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: G1404910 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404910-001 Collection Date: 04/14/2014 09:15
Matrix: Aqueous Received Date: 04/14/2014 18:28
Analyses Result QL Q Units DF Date Analyzed



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

Total dissolved solids 24300 200 mg/L 10 04/15/2014 15:01

Physical Tests SM 2540D Analyst: KLS Total suspended solids 8400 200 mg/L 40 04/15/2014 15:01

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day 10 3 mg/L 3 04/16/2014 06:19

Inorganic Metals USGS I-1230-85 Analyst: CLS
Hexavalent Chromium < 0.020 0.020 mg/L 1 04/14/2014 19:00

Inorganic Non-Metals USGS I-1187-85 Analyst: SEF
Chloride 12700 1000 mg/L 200 04/17/2014 11:38

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 04/17/2014 17:26 Selenium, dissolved 0.31 0.02 mg/L 1 04/17/2014 17:26

Inorganic Metals SM 3112B Analyst: JEK Mercury 0.267 0.100 mg/L 500 04/17/2014 09:29

Inorganic Metals EPA 200.7 Analyst: GMG
Aluminum 195 1.0 mg/L 1 04/17/2014 03:21
Arsenic 1.60 0.20 mg/L 1 04/17/2014 03:21 Beryllium 0.024 0.010 mg/L 1 04/17/2014 03:21
Boron 275 5.00 mg/L 10 04/17/2014 13:47
Cadmium < 0.020 0.020 mg/L 1 04/17/2014 03:21
Chromium 1.30 0.10 mg/L 1 04/17/2014 03:21 Copper 1.05 0.10 mg/L 1 04/17/2014 03:21
Iron 821 0.50 mg/L 1 04/17/2014 03:21
Lead 0.51 0.20 mg/L 1 04/17/2014 03:21 Manganese 189 0.10 mg/L 1 04/17/2014 03:21



# 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: G1404910 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404910-002 Collection Date: 04/14/2014 09:00
Matrix: Aqueous Received Date: 04/14/2014 18:28
Analyses Result QL Q Units DF Date Analyzed



### Page 4 of 5Nickel 2.27 0.10 mg/L 1 04/17/2014 03:21

Selenium 2.56 0.20 mg/L 1 04/17/2014 03:21
Silver 0.061 0.050 mg/L 1 04/17/2014 03:21
Zinc 2.68 0.10 mg/L 1 04/17/2014 03:21

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium 1.30 0.02 mg/L 1 04/21/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: AEO
Oil & Grease < 18 18 mg/L 3.57 04/17/2014 13:33



# 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: G1404910 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404910-002 Collection Date: 04/14/2014 09:00
Matrix: Aqueous Received Date: 04/14/2014 18:28
Analyses Result QL Q Units DF Date Analyzed



### Page 5 of 5