## 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: G1404D11

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 04/22/2014 11:01

Inorganic Non-Metals SM 2540 C Analyst: KLS
Total dissolved solids 23000 20 mg/L 1 04/22/2014 11:07

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day < 2 2 mg/L 1.5 04/23/2014 06:39

Inorganic Non-Metals USGS I-1187-85 Analyst: SEF
Chloride 10800 1000 mg/L 200 04/23/2014 10:26

Inorganic Metals EPA 200.8 Analyst: RLM Selenium, dissolved 0.039 0.001 mg/L 1 04/25/2014 03:50

Inorganic Metals EPA 200.8 Analyst: RLM
Arsenic 0.002 0.001 mg/L 1 04/25/2014 03:44
Chromium < 0.005 0.005 mg/L 1 04/25/2014 03:44
Nickel 0.0036 0.0005 mg/L 1 04/25/2014 03:44
Selenium 0.039 0.001 mg/L 1 04/25/2014 03:44

Inorganic Metals EPA 200.7 Analyst: JEK Iron, dissolved < 0.05 0.05 mg/L 1 04/24/2014 18:36

Inorganic Metals SM 3112B Analyst: RLM Mercury < 0.0050 0.0050 mg/L 25 04/24/2014 14:34

Inorganic Metals EPA 200.7 Analyst: JEK
Aluminum < 0.1 0.1 mg/L 1 04/24/2014 18:33 Beryllium < 0.001 0.001 mg/L 1 04/24/2014 18:33
Boron 216 2.50 mg/L 50 04/26/2014 16:25
Cadmium < 0.002 0.002 mg/L 1 04/24/2014 18:33 Copper < 0.01 0.01 mg/L 1 04/24/2014 18:33



# 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: Outfall 101
Lab Order: G1404D11 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404D11-001 Collection Date: 04/21/2014 09:15
Matrix: Aqueous Received Date: 04/21/2014 17:20
Analyses Result QL Q Units DF Date Analyzed



### Page 2 of 5Iron < 0.05 0.05 mg/L 1 04/24/2014 18:33

Lead < 0.02 0.02 mg/L 1 04/24/2014 18:33 Manganese 4.19 0.01 mg/L 1 04/24/2014 18:33
Silver < 0.005 0.005 mg/L 1 04/24/2014 18:33
Zinc < 0.01 0.01 mg/L 1 04/24/2014 18:33

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium < 0.02 0.02 mg/L 1 04/28/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: AEO
Oil & Grease < 5 5 mg/L 1 04/23/2014 15:05



# 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: Outfall 101
Lab Order: G1404D11 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404D11-001 Collection Date: 04/21/2014 09:15
Matrix: Aqueous Received Date: 04/21/2014 17:20
Analyses Result QL Q Units DF Date Analyzed



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

Total dissolved solids 26300 100 mg/L 5 04/22/2014 14:17

Physical Tests SM 2540D Analyst: KLS Total suspended solids 4000 100 mg/L 20 04/22/2014 11:01

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day 5 3 mg/L 3 04/23/2014 06:39

Inorganic Metals USGS I-1230-85 Analyst: SEF
Hexavalent Chromium < 0.020 0.020 mg/L 1 04/21/2014 18:23

Inorganic Non-Metals USGS I-1187-85 Analyst: SEF
Chloride 12000 1000 mg/L 200 04/23/2014 10:26

Inorganic Metals EPA 200.7 Analyst: JEK Iron, dissolved < 0.05 0.05 mg/L 1 04/24/2014 18:38 Selenium, dissolved 0.19 0.02 mg/L 1 04/24/2014 18:38

Inorganic Metals SM 3112B Analyst: RLM Mercury 0.160 0.100 mg/L 500 04/24/2014 14:36

Inorganic Metals EPA 200.7 Analyst: JEK
Aluminum 47.1 1.0 mg/L 1 04/28/2014 12:52
Arsenic 0.44 0.20 mg/L 1 04/28/2014 12:52 Beryllium < 0.010 0.010 mg/L 1 04/28/2014 12:52
Boron 276 5.00 mg/L 10 04/29/2014 11:47
Cadmium 0.050 0.020 mg/L 1 04/28/2014 12:52
Chromium 0.39 0.10 mg/L 1 04/28/2014 12:52 Copper 0.35 0.10 mg/L 1 04/28/2014 12:52
Iron 263 0.50 mg/L 1 04/28/2014 12:52
Lead < 0.20 0.20 mg/L 1 04/28/2014 12:52 Manganese 204 0.10 mg/L 1 04/29/2014 11:56



# 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: G1404D11 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404D11-002 Collection Date: 04/21/2014 09:00
Matrix: Aqueous Received Date: 04/21/2014 17:20
Analyses Result QL Q Units DF Date Analyzed



### Page 4 of 5Nickel 1.97 0.10 mg/L 1 04/28/2014 12:52

Selenium 1.45 0.20 mg/L 1 04/28/2014 12:52
Silver < 0.050 0.050 mg/L 1 04/28/2014 12:52
Zinc 11.4 0.10 mg/L 1 04/28/2014 12:52

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium 0.39 0.02 mg/L 1 04/29/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: AEO
Oil & Grease < 22 22 mg/L 4.35 04/23/2014 14:55



# 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: G1404D11 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1404D11-002 Collection Date: 04/21/2014 09:00
Matrix: Aqueous Received Date: 04/21/2014 17:20
Analyses Result QL Q Units DF Date Analyzed



### Page 5 of 5