## 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: G1403823

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 4 1 mg/L 1 03/18/2014 14:34

Inorganic Non-Metals SM 2540 C Analyst: KLS
Total dissolved solids 25600 20 mg/L 1 03/18/2014 14:34

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day < 2 2 mg/L 1.5 03/19/2014 06:48

Inorganic Non-Metals USGS I-1187-85 Analyst: CLS
Chloride 16300 1000 mg/L 200 03/20/2014 14:20

Inorganic Metals EPA 200.8 Analyst: RXS Selenium, dissolved 0.026 0.001 mg/L 1 03/25/2014 16:41

Inorganic Metals EPA 200.8 Analyst: RXS
Arsenic 0.002 0.001 mg/L 1 03/25/2014 16:36
Chromium < 0.005 0.005 mg/L 1 03/25/2014 16:36
Nickel 0.0043 0.0005 mg/L 1 03/25/2014 16:36
Selenium 0.024 0.001 mg/L 1 03/25/2014 16:36

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 03/21/2014 14:51

Inorganic Metals SM 3112B Analyst: RLD Mercury < 0.0002 0.0002 mg/L 1 03/19/2014 15:25

Inorganic Metals EPA 200.7 Analyst: GMG
Aluminum < 0.1 0.1 mg/L 1 03/21/2014 14:47 Beryllium < 0.001 0.001 mg/L 1 03/21/2014 14:47
Boron 249 2.50 mg/L 50 03/24/2014 14:23
Cadmium < 0.002 0.002 mg/L 1 03/21/2014 14:47 Copper < 0.01 0.01 mg/L 1 03/21/2014 14:47



# 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: G1403823 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403823-001 Collection Date: 03/17/2014 09:30
Matrix: Aqueous Received Date: 03/17/2014 18:29
Analyses Result QL Q Units DF Date Analyzed



### Page 2 of 5Iron < 0.05 0.05 mg/L 1 03/21/2014 14:47

Lead < 0.02 0.02 mg/L 1 03/21/2014 14:47 Manganese 7.95 0.01 mg/L 1 03/21/2014 14:47
Silver < 0.005 0.005 mg/L 1 03/21/2014 14:47
Zinc < 0.01 0.01 mg/L 1 03/21/2014 14:47

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium < 0.02 0.02 mg/L 1 03/26/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: MTM
Oil & Grease < 5 5 mg/L 1.01 03/20/2014 15:29



# 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: G1403823 Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403823-001 Collection Date: 03/17/2014 09:30
Matrix: Aqueous Received Date: 03/17/2014 18:29
Analyses Result QL Q Units DF Date Analyzed



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

Total dissolved solids 23700 100 mg/L 5 03/18/2014 14:34

Physical Tests SM 2540D Analyst: KLS Total suspended solids 12000 100 mg/L 20 03/18/2014 14:34

Indicator Organic Parameters SM 5210 B Analyst: MMR BOD 5-day 12 3 mg/L 3 03/19/2014 06:48

Inorganic Metals USGS I-1230-85 Analyst: SEF
Hexavalent Chromium < 0.020 0.020 mg/L 1 03/17/2014 19:00

Inorganic Non-Metals USGS I-1187-85 Analyst: CLS
Chloride 17200 1000 mg/L 200 03/20/2014 14:20

Inorganic Metals EPA 200.7 Analyst: GMG Iron, dissolved < 0.05 0.05 mg/L 1 03/21/2014 14:56 Selenium, dissolved 0.20 0.02 mg/L 1 03/21/2014 14:56

Inorganic Metals SM 3112B Analyst: RLD Mercury 0.378 0.100 mg/L 500 03/19/2014 15:27

Inorganic Metals EPA 200.7 Analyst: GMG
Aluminum 218 1.0 mg/L 1 03/20/2014 20:32
Arsenic 1.76 0.20 mg/L 1 03/20/2014 20:32 Beryllium 0.026 0.010 mg/L 1 03/20/2014 20:32
Boron 319 5.00 mg/L 10 03/24/2014 17:13
Cadmium < 0.020 0.020 mg/L 1 03/20/2014 20:32
Chromium 1.73 0.10 mg/L 1 03/20/2014 20:32 Copper 1.16 0.10 mg/L 1 03/20/2014 20:32
Iron 1000 0.50 mg/L 1 03/20/2014 20:32
Lead 0.58 0.20 mg/L 1 03/20/2014 20:32 Manganese 231 0.10 mg/L 1 03/20/2014 20:32



# 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: G1403823 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403823-002 Collection Date: 03/17/2014 09:15
Matrix: Aqueous Received Date: 03/17/2014 18:29
Analyses Result QL Q Units DF Date Analyzed



### Page 4 of 5Nickel 2.79 0.10 mg/L 1 03/20/2014 20:32

Selenium 2.87 0.20 mg/L 1 03/20/2014 20:32
Silver < 0.050 0.050 mg/L 1 03/20/2014 20:32
Zinc 4.35 0.10 mg/L 1 03/20/2014 20:32

Trivalent Chromium EPA 200.7/I-1230-85 Analyst: LAN
Trivalent Chromium 1.73 0.02 mg/L 1 03/26/2014 00:00

Indicator Organic Parameters EPA 1664 Analyst: MTM
Oil & Grease < 18 18 mg/L 3.57 03/20/2014 17:33



# 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: G1403823 IWT Influent Special Project: Keystone 611 W Sampled By: NRG
Lab ID: G1403823-002 Collection Date: 03/17/2014 09:15
Matrix: Aqueous Received Date: 03/17/2014 18:29
Analyses Result QL Q Units DF Date Analyzed



### Page 5 of 5