NC0005088_Response to July 6, 2016 Letter_20160727

K
DUKE r rry P silent
Senior Vice President
s
�' ENERGY. Environmental,Health&Safety
526 South Church Street
Mail Code EX3XF
Charlotte, NC 28202
[phone]
July 22, 2016
Mr. Landon Davidson
State of North Carolina
Department of Environment Quality (DEQ) RECEIVEDINCDEQ/DWR
Water Quality Regional Operations JUL L 7 2016
2090 US Highway 70
Swannanoa, NC 28778 Water Quality
Permitting Section
Subject: Rogers Energy Complex (Cliffside Steam Station)
NPDES Permit No. NC0005088
Response to July 6, 2016 Letter on Area of Wetness (AOW) S-4
Dear Mr. Davidson:
In response to your letter of July 6, 2016, received on July 12, 2016, the following
provides the information that you requested.
Source of Discharge
The Area of Wetness (AOW) identified as "S-4" lies downstream of the toe of an
embankment. The embankment was constructed in 2 phases in the 1970s and 80s to
enable dry placement of ash materials that had been removed from the 1-4 ash basin.
Location of the AOW aligns with a 24" reinforced concrete pipe (RCP) shown on
historical drawings.
The 24-inch RCP was installed prior to placing the embankment and dry ash to provide
an outlet for a natural drainage path and likely to reduce the potential of hydrostatic
pressure buildup within the embankment. Plans do not indicate elevation of the
upstream end of the pipe or any kind of spring box or aggregate filter but the elevation
can be estimated based on terrain grade before ash was placed.
Engineering Studies Completed To-Date
Investigation of this area has been conducted. The investigation included a geophysical
survey, geotechnical borings, piezometer installation and cone penetrometer testing
(CPT), along with lab testing to produce a stability analysis of the embankment as well
as hand dug test pits and machine dug excavations to locate the pipe.

Page 2 of 3
July 22, 2016
Letter to Mr. Landon Davidson
The piezometer installed in the embankment crest indicates a steady phreatic surface
The analysis of the embankment with actual phreatic surface data yielded an
appropriate factor of safety analysis, greater than 1.50. The drawings indicate a
weighted reverse filter had been installed over the outlet of the pipe during the 2nd
phase of original construction.
The presence of the 24-inch RCP pipe was confirmed, with a portion of the pipe
uncovered near the toe of the embankment. Water was observed flowing from a joint
gap exposed by the excavation and collected in an open pit. Water was pumped out of
the pit using vacuum trucks to estimate flow rate. Water continued to flow steadily after
pumping for several hours. The flow from the joint gap was higher during the pumping
period as water collected inside the pipe was relieved thru the joint gap. The AOW was
noted to diminish during this time. After evaluating this flow over an 8 hour period the
pipe was sealed back up. No solid materials were observed to be in suspension or
accumulated in the pit from this flow.
Based on the steady measured phreatic surface, mentioned testing and the observation
of water flow it is concluded that the pipe is functioning as intended to keep water
pressure from building up behind the embankment and the embankment is stable. This
pipe is not "pressurized" other than the developed phreatic head that exists and no body
of water exists on the upstream portion of the embankment.
Historic Water Quality Monitoring Results
Monitoring of S-4 has been conducted on the following dates:
a. July 7, 2014
b. May 5, 2015
c. June 29, 2015
d. September 17, 2015
e. November 17, 2015
f. April 18, 2016
g. April 27, 2016
These monitoring results are attached. The July 7, 2014 monitoring results were part of
the NPDES permit renewal application submitted on July 28, 2014. That permit
issuance is still pending.
NC Coal Ash Management Act Compliance Status and Recommendations for
Addressing S-4
Per GS 130A-309.210 (d) on September 30, 2014 Duke Energy submitted the
proposed plan for the identification of new discharges for the NCDEQ review and
approval. Per GS 130A-309.210 (b) on December 30, 2014 Duke Energy submitted the
discharge assessment plan to NCDEQ for its review and approval. Per GS 130A-

Page 3 of 3
July 22, 2016
Letter to Mr. Landon Davidson
309.210 (c) (2) a. 2. the application of July 28, 2014 identified S-4. Subsequent
monitoring analytical results have also been provided to NCDEQ for S-4.
Duke Energy is developing a plan for a stone overlay to further reinforce the weighted
reverse filter as an interim measure. Presently this area is included in a monthly visual
inspection in which results have not noticed a change in the discharge. Duke Energy
will increase this inspection frequency to weekly going forward.
On April 13, 2016, Duke Energy requested to NCDEQ that S-4 along with a number of
other AOW's at various sites, be designated as an effluent channel to the Broad River.
This determination is pending NCDEQ review and the issuance of the NPDES permit.
With the very low flow and observed concentrations from S-4 water quality standards in
the receiving stream are not expected to be contravened. Results of historical ambient
monitoring of the Broad River is also attached. This ambient monitoring includes
samples collected upstream and downstream of the station and the results are in
compliance with the Water Quality Standards.
If you have any questions associated with these comments please contact Robert Wylie
at 704 382-4669.
Sincerely,
atih;4444:
Harry K. Sideris
SVP, Environmental, Health and Safety
Attachment:
1. Rogers Energy Complex Historic Analytical Monitoring Data for S-4
2. Rogers Energy Complex Broad River Analytical Monitoring Data
cc: Jeff Poupart

Attachment 1
Rogers Energy Complex Historic.Analytical Monitoring
Data at S-4

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I AOW ID I Collected tate f Component I Method I <or> I Result I Units
Cliffside 5-04 7/7/2014 Aluminum (Al) EPA 200.7 0.03 mg/L
Cliffside 5-04 7/7/2014 Barium (Ba) EPA 200.7 0.097 mg/L
Cliffside 5-04 7/7/2014 Magnesium (Mg) EPA 200.7 12.8 mg/L
Cliffside S-04 7/7/2014 Manganese(Mn) EPA 200.7 2.46 mg/L
Cliffside 5-04 7/7/2014 Zinc(Zn) EPA 200.7 < 0.005 mg/L
Cliffside 5-04 7/7/2014 Iron (Fe) EPA 200.7 1.94 mg/L
Cliffside 5-04 7/7/2014 Boron(B) EPA 200.7 0.567 mg/L
Cliffside 5-04 7/7/2014 Calcium (Ca) EPA 200.7 55 mg/L
Cliffside 5-04 7/7/2014 Hardness EPA 200.7 190 mg/L(CaCO3)
Cliffside 5-04 7/7/2014 Thallium(TI) Low Level EPA 200.8 < 0.2 ug/L
Cliffside 5-04 7/7/2014 Chloride EPA 300.0 18 mg/L
Cliffside 5-04 7/7/2014 Fluoride EPA 300.0 < 1 mg/L
Cliffside 5-04 7/7/2014 Sulfate EPA 300.0 90 mg/L
Cliffside 5-04 7/7/2014 Antimony(Sb) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Arsenic(As) EPA 200.8 28.6 ug/L
Cliffside 5-04 7/7/2014 Cadmium (Cd) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Chromium (Cr) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Lead (Pb) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Molybdenum (Mo) EPA 200.8 2.44 ug/L
Cliffside 5-04 7/7/2014 Nickel (Ni) EPA 200.8 < 1 ug/L
Cliffside 5-04 7/7/2014 Selenium (Se) EPA 200.8 < 1 ug/L
Cliffside S-04 7/7/2014 Oil and Grease EPA 16648 < 5 mg/L
Cliffside 5-04 7/7/2014 TSS SM2540D < 5 mg/L
Cliffside 5-04 7/7/2014 COD HACH 8000 < 20 mg/L
Cliffside S-04 7/7/2014 TDS SM2540C 300 mg/L
Cliffside 5-04 7/7/2014 Mercury(Hg) EPA 245.1 < SO ng/L
Cliffside 5-04 5/5/2015 Temperature Field Work 19 °C
Cliffside 5-04 5/5/2015 pH Field Work 7.04 SI Units
Cliffside 5-04 5/5/2015 Specific Conductance Field Work 498 uS/cm
Cliffside S-04 5/5/2015 Aluminum (Al) EPA 200.7 0.045 mg/L
Cliffside 5-04 5/5/2015 Barium(Ba) EPA 200.7 0.102 mg/L
Cliffside 5-04 5/5/2015 Magnesium (Mg) EPA 200.7 14.1 mg/L
1 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I AOWID I Collected Date I Component I Method I <or> I Result I Units
Cliffside 5-04 5/5/2015 Manganese(Mn) EPA 200.7 2.92 mg/L
Cliffside S-04 5/5/2015 Zinc(Zn) EPA 200.7 < 0.005 mg/L
Cliffside 5-04 5/5/2015 Calcium(Ca) EPA 200.7 56.2 mg/L
Cliffside 5-04 5/5/2015 Iron (Fe) EPA 200.7 1.61 mg/L
Cliffside 5-04 5/5/2015 Nitrite+Nitrate (Colorimetric) EPA 353.2 0.019 mg-N/L
Cliffside 5-04 5/5/2015 Phosphorus(P) EPA 200.7 0.026 mg/L
Cliffside S-04 5/5/2015 Boron(B) EPA 200.7 0.601 mg/L
Cliffside S-04 5/5/2015 Bromide EPA 300.0 0.4386 mg/L
Cliffside S-04 5/5/2015 Fluoride EPA 300.0 0.1975 mg/L
Cliffside 5-04 5/5/2015 Total Kjeldahl Nitrogen EPA 351.2 < 0.15 mg-N/L
(Colorimetric)
Cliffside 5-04 5/5/2015 Hardness EPA 200.7 198 mg/L(CaCO3)
Cliffside 5-04 5/5/2015 Thallium (TI) Low Level EPA 200.8 < 0.2 ug/L
Cliffside 5-04 5/5/2015 Mercury(Hg) 1631E 3.96 ng/L
Cliffside 5-04 5/5/2015 Chloride EPA 300.0 27.69 mg/L
Cliffside 5-04 5/5/2015 Antimony(Sb) EPA 200.8 < 1 ug/L
Cliffside S-04 5/5/2015 Arsenic(As) EPA 200.8 20.2 ug/L
Cliffside S-04 5/5/2015 Cadmium (Cd) EPA 200.8 < 1 ug/L
Cliffside 5-04 5/5/2015 Chromium (Cr) EPA 200.8 < 1 ug/L
Cliffside S-04 5/5/2015 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 5/5/2015 Lead (Pb) EPA 200.8 < 1 ug/L
Cliffside S-04 5/5/2015 Molybdenum (Mo) EPA 200.8 2.93 ug/L
Cliffside S-04 5/5/2015 Nickel(Ni) EPA 200.8 < 1 ug/L
Cliffside 5-04 5/5/2015 Selenium (Se) EPA 200.8 < 1 ug/L
Cliffside 5-04 5/5/2015 Vanadium (V) EPA 200.8 < 1 ug/L
Cliffside 5-04 5/5/2015 Sulfate EPA 300.0 104.1 mg/L
Cliffside 5-04 5/5/2015 Oil and Grease EPA 1664B < 5 mg/L
Cliffside S-04 5/5/2015 TSS SM2540D 7 mg/L
Cliffside 5-04 5/5/2015 COD HACH 8000 < 20 mg/L
Cliffside S-04 5/5/2015 TDS SM2540C 540 mg/L
Cliffside 5-04 6/29/2015 Barium (Ba) EPA 200.7 0.033 mg/L
Cliffside 5-04 6/29/2015 Barium, Dissolved EPA 200.7 0.026 mg/L
2 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I AOW ID I Collected Date I Component I Method I <or> I Result I Units I
Cliffside S-04 6/29/2015 Manganese(Mn) EPA 200.7 0.23 mg/L
Cliffside S-04 6/29/2015 Manganese, Dissolved EPA 200.7 0.24 mg/L
Cliffside S-04 6/29/2015 Strontium (Sr) EPA 200.7 0.056 mg/L
Cliffside S-04 6/29/2015 Strontium, Dissolved EPA 200.7 0.054 mg/L
Cliffside S-04 6/29/2015 Zinc(Zn) EPA 200.7 0.046 mg/L
Cliffside 5-04 6/29/2015 Zinc, Dissolved EPA 200.7 0.0032 mg/L
Cliffside 5-04 6/29/2015 Nitrogen, NO2 plus NO3 EPA 353.2 0.03 mg/L
Cliffside S-04 6/29/2015 Boron(B) EPA 200.7 0.44 mg/L
Cliffside 5-04 6/29/2015 Boron, Dissolved EPA 200.7 0.45 mg/L
Cliffside S-04 6/29/2015 Iron(Fe) EPA 200.7 1.6 mg/L
Cliffside S-04 6/29/2015 Iron, Dissolved EPA 200.7 1.9 mg/L
Cliffside S-04 6/29/2015 Cadmium (Cd) EPA 200.8 < 0.08 ug/L
Cliffside 5-04 6/29/2015 Cadmium, Dissolved EPA 200.8 < 0.08 ug/L
Cliffside S-04 6/29/2015 Aluminum (Al) EPA 200.7 0.4 mg/L
Offside 5-04 6/29/2015 Aluminum, Dissolved EPA 200.7 0.23 mg/L
Cliffside 5-04 6/29/2015 Sulfide SM 4500-52D < 0.1 mg/L
Cliffside 5-04 6/29/2015 Calcium (Ca) EPA 200.7 9.18 mg/L
Cliffside 5-04 6/29/2015 Lead (Pb) EPA 200.8 1.2 ug/L
Cliffside 5-04 6/29/2015 Lead, Dissolved EPA 200.8 0.79 ug/L
Cliffside 5-04 6/29/2015 Magnesium (Mg) EPA 200.7 2.22 mg/L
Cliffside 5-04 6/29/2015 Thallium (TI) Low Level EPA 200.8 0.038 ug/L
Ctiffside 5-04 6/29/2015 Thallium, Dissolved EPA 200.8 0.027 ug/L
Cliffside S-04 6/29/2015 Beryllium (Be) EPA 200.8 < 0.2 ug/L
Cliffside 5-04 6/29/2015 Beryllium, Dissolved EPA 200.8 < 0.2 ug/L
Cliffside 5-04 6/29/2015 Antimony(Sb) EPA 200.8 < 0.5 ug/L
Cliffside S-04 6/29/2015 Antimony, Dissolved EPA 200.8 < 0.5 ug/L
Cliffside 5-04 6/29/2015 Arsenic(As) EPA 200.8 1.2 ug/L
Cliffside S-04 6/29/2015 Arsenic, Dissolved EPA 200.8 1.6 ug/L
Cliffside 5-04 6/29/2015 Chromium (Cr) EPA 200.8 0.47 ug/L
Cliffside S-04 6/29/2015 Chromium, Dissolved EPA 200.8 0.74 ug/L
Cliffside S-04 6/29/2015 Cobalt(Co) EPA 200.8 0.97 ug/L
Cliffside 5-04 6/29/2015 Cobalt, Dissolved EPA 200.8 0.85 ug/L
Cliffside S-04 6/29/2015 Molybdenum (Mo) EPA 200.8 < 0.5 ug/L
3 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I AOW ID I Collected Date I Component I Method I <or> I Result I Units I
Cliffside 5-04 6/29/2015 Molybdenum, Dissolved EPA 200.8 < 0.5 ug/L
Cliffside S-04 6/29/2015 Nickel (Ni) EPA 200.8 0.59 ug/L
Cliffside 5-04 6/29/2015 Nickel, Dissolved EPA 200.8 0.6 ug/L
Cliffside S-04 6/29/2015 Selenium(Se) EPA 200.8 < 0.5 ug/L
Cliffside 5-04 6/29/2015 Selenium, Dissolved EPA 200.8 < 0.5 ug/L
Cliffside S-04 6/29/2015 TOC SM 5310B 0.86 mg/L
Cliffside 5-04 6/29/2015 Copper(Cu) EPA 200.8 0.55 ug/L
Cliffside S-04 6/29/2015 Copper, Dissolved EPA 200.8 0.51 ug/L
Cliffside 5-04 6/29/2015 Vanadium (V) EPA 200.8 0.81 ug/L
Cliffside 5-04 6/29/2015 Vanadium, Dissolved EPA 200.8 0.66 ug/L
Cliffside 5-04 6/29/2015 Alkalinity,Carbonate (CaCO3) SM 23208 < 5 mg/L
Cliffside 5-04 6/29/2015 Alkalinity SM 23208 4.6 mg/L
Cliffside S-04 6/29/2015 Alkalinity,Bicarbonate (CaCO3) SM 2320B 4.6 mg/L
Cliffside 5-04 6/29/2015 Potassium (K) EPA 200.7 < 5 mg/L
Cliffside 5-04 6/29/2015 Sodium (Na) EPA 200.7 11.3 mg/L
Cliffside S-04 6/29/2015 Chloride EPA 300.0 13.5 mg/L
Cliffside 5-04 6/29/2015 Sulfate EPA 300.0 31.1 mg/L
Cliffside S-04 6/29/2015 TSS SM 2540D 356 mg/L
Cliffside S-04 6/29/2015 Methane RSK 175 7.7 ug/L
Cliffside 5-04 6/29/2015 TDS SM 2540C 92 mg/L
Cliffside S-04 6/29/2015 Mercury(Hg) EPA 245.1 < 200 ng/L
Cliffside 5-04 6/29/2015 Mercury, Dissolved EPA 245.1 < 200 ng/L
Cliffside 5-04 7/7/2014 pH Field Work 7
Cliffside 5-04 7/7/2014 Temperature Field Work 18.3
Cliffside 5-04 7/7/2014 Specific Conductance Field Work 448
Cliffside 5-04 11/17/2015 Flow Field Work 0.022 cfs
Cliffside 5-04 11/17/2015 pH Field Work 6.68 SI Units
Cliffside S-04 11/17/2015 Specific Conductance Field Work 589 uS/cm
Cliffside S-04 11/17/2015 Temperature Field Work 16.3 °C
Cliffside S-04 11/17/2015 Turbidity Field Work 5.9 NTU
Cliffside S-04 11/17/2015 Flow Field Work 0.022 cfs
4 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
I Station I AOW ID I Collected Date I Component I Method I <or> I Result ' Units
Cliffside 5-04 11/17/2015 pH Field Work 6.68 SI Units
Cliffside 5-04 11/17/2015 Specific Conductance Field Work 589 uS/cm
Cliffside 5-04 11/17/2015 Temperature Field Work 16.3 °C
Cliffside S-04 11/17/2015 Turbidity Field Work 5.9 NTU
Cliffside 5-04 11/17/2015 Aluminum(Al) EPA 200.7 0.016 mg/L
Cliffside 5-04 11/17/2015 Barium (Ba) EPA 200.7 0.116 mg/L
Cliffside 5-04 11/17/2015 Magnesium(Mg) EPA 200.7 15.7 mg/L
Cliffside S-04 11/17/2015 Manganese (Mn) EPA 200.7 3.37 mg/L
Cliffside 5-04 11/17/2015 Zinc(Zn) EPA 200.7 < 0.005 mg/L
Cliffside 5-04 11/17/2015 Calcium(Ca) EPA 200.7 58.7 mg/L
Cliffside 5-04 11/17/2015 Iron (Fe) EPA 200.7 2.59 mg/L
Cliffside 5-04 11/17/2015 Nitrite+Nitrate(Colorimetric) EPA 353.2 < 0.01 mg-N/L
Cliffside 5-04 11/17/2015 Boron (B) EPA 200.7 0.618 mg/L
Cliffside 5-04 11/17/2015 Sodium(Na) EPA 200.7 12.6 mg/L
Cliffside 5-04 11/17/2015 Potassium (K) EPA 200.7 8.96 mg/L
Cliffside 5-04 11/17/2015 Fluoride EPA 300.0 0.26 mg/L
Cliffside 5-04 11/17/2015 Thallium(TI) Low Level EPA 200.8 < 0.2 ug/L
Cliffside 5-04 11/17/2015 Mercury(Hg) 1631E 5.26 ng/L
Cliffside 5-04 11/17/2015 Antimony(Sb) EPA 200.8 < 1 ug/L
Cliffside 5-04 11/17/2015 Arsenic(As) EPA 200.8 41 ug/L
Cliffside 5-04 11/17/2015 Cadmium (Cd) EPA 200.8 < 1 ug/L
Cliffside 5-04 11/17/2015 Chromium(Cr) EPA 200.8 < 1 ug/L
Cliffside S-04 11/17/2015 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 11/17/2015 Lead (Pb) EPA 200.8 < 1 ug/L
Cliffside 5-04 11/17/2015 Molybdenum(Mo) EPA 200.8 3.24 ug/L
Cliffside 5-04 11/17/2015 Nickel (Ni) EPA 200.8 < 1 ug/L
Cliffside 5-04 11/17/2015 Selenium(Se) EPA 200.8 < 1 ug/L
Cliffside S-04 11/17/2015 Chloride EPA 300.0 35 mg/L
Cliffside 5-04 11/17/2015 Sulfate EPA 300.0 120 mg/L
Cliffside S-04 11/17/2015 TSS SM2540D < 5 mg/L
Cliffside 5-04 11/17/2015 Alkalinity SM 2320B-2011 93 mg/L
5 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I ROW ID I Collected Date I Component I Method I <or> I Result I Units
Cliffside 5-04 11/17/2015 Alkalinity,Bicarbonate(CaCO3) SM 2320B-2011 93 mg/L
Cliffside 5-04 11/17/2015 Alkalinity,Carbonate (CaCO3) SM 2320B-2011 < 10 mg/L
Cliffside 5-04 11/17/2015 TDS SM2540C 350 mg/L
Cliffside S-04 4/27/2016 Oil and Grease EPA 1664B < 5 mg/L
Cliffside S-04 4/27/2016 Alkalinity SM 2320B-2011 100 mg/L
Cliffside 5-04 4/27/2016 Alkalinity,Bicarbonate(CaCO3) SM 2320B-2011 100 mg/L
Cliffside 5-04 4/27/2016 Nitrite+ Nitrate(Colorimetric) EPA 353.2 < 0.01 mg-N/L
Cliffside 5-04 4/27/2016 Alkalinity,Carbonate (CaCO3) SM 2320B-2011 < 10 mg/L
Cliffside 5-04 4/27/2016 Chloride EPA 300.0 36 mg/L
Cliffside 5-04 4/27/2016 Fluoride EPA 300.0 0.21 mg/L
Cliffside 5-04 4/27/2016 Sulfate EPA 300.0 130 mg/L
Cliffside S-04 4/27/2016 Aluminum (Al) EPA 200.7 0.017 mg/L
Cliffside 5-04 4/27/2016 Barium (Ba) EPA 200.7 0.116 mg/L
Cliffside 5-04 4/27/2016 Boron (B) EPA 200.7 0.651 mg/L
Cliffside S-04 4/27/2016 Calcium (Ca) EPA 200.7 62.8 mg/L
Cliffside 5-04 4/27/2016 Iron (Fe) EPA 200.7 2.88 mg/L
Cliffside S-04 4/27/2016 Magnesium(Mg) EPA 200.7 16.9 mg/L
Cliffside S-04 4/27/2016 Manganese(Mn) EPA 200.7 3.74 mg/L
Cliffside 5-04 4/27/2016 Potassium (K) EPA 200.7 8.93 mg/L
Cliffside S-04 4/27/2016 Sodium (Na) EPA 200.7 12.3 mg/L
Cliffside S-04 4/27/2016 Hardness EPA 200.7 226 mg/L(CaCO3)
Cliffside 5-04 4/27/2016 Zinc(Zn) EPA 200.7 < 0.005 mg/L
Cliffside S-04 4/27/2016 Antimony(Sb) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Arsenic(As) EPA 200.8 44.3 ug/L
Cliffside S-04 4/27/2016 Cadmium (Cd) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Chromium (Cr) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Lead (Pb) EPA 200.8 < 1 ug/L
6 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
I Station I AOW ID I Collected Date I Component I Method I <or> I Result I units
Cliffside 5-04 4/27/2016 Molybdenum (Mo) EPA 200.8 2.93 ug/L
Cliffside 5-04 4/27/2016 Nickel(Ni) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Selenium (Se) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Thallium(TI) Low Level EPA 200.8 < 0.2 ug/L
Cliffside 5-04 4/27/2016 Mercury(Hg) 1631E 2.77 ng/L
Cliffside 5-04 4/27/2016 Flow Field Work 0.07 cfs
Cliffside 5-04 4/27/2016 pH Field Work 6.3 SI Units
Cliffside 5-04 4/27/2016 Specific Conductance Field Work 545 uS/cm
Cliffside 5-04 4/27/2016 Temperature Field Work 18 °C
Cliffside S-04 4/27/2016 Turbidity Field Work 2.6 NTU
Cliffside 5-04 4/27/2016 TDS SM2540C 340 mg/L
Cliffside S-04 4/27/2016 TSS SM2540D 5 mg/L
Cliffside S-04 4/27/2016 Oil and Grease EPA 16648 < 5 mg/L
Cliffside 5-04 4/27/2016 Alkalinity SM 2320B-2011 100 mg/L
Cliffside 5-04 4/27/2016 Alkalinity,Bicarbonate(CaCO3) SM 2320B-2011 100 mg/L
Cliffside 5-04 4/27/2016 Nitrite+Nitrate(Colorimetric) EPA 353.2 < 0.01 mg-N/L
Cliffside S-04 4/27/2016 Alkalinity,Carbonate (CaCO3) SM 2320B-2011 < 10 mg/L
Cliffside 5-04 4/27/2016 Chloride EPA 300.0 36 mg/L
Cliffside S-04 4/27/2016 Fluoride EPA 300.0 0.22 mg/L
Cliffside 5-04 4/27/2016 Sulfate EPA 300.0 130 mg/L
Cliffside 5-04 4/27/2016 Aluminum (Al) EPA 200.7 0.033 mg/L
Cliffside S-04 4/27/2016 Barium (Ba) EPA 200.7 0.112 mg/L
Cliffside S-04 4/27/2016 Boron (B) EPA 200.7 0.635 mg/L
Cliffside 5-04 4/27/2016 Calcium (Ca) EPA 200.7 60.6 mg/L
Cliffside S-04 4/27/2016 Iron(Fe) EPA 200.7 2.96 mg/L
Cliffside S-04 4/27/2016 Magnesium (Mg) EPA 200.7 16.4 mg/L
Cliffside S-04 4/27/2016 Manganese(Mn) EPA 200.7 3.59 mg/L
Cliffside S-04 4/27/2016 Potassium (K) EPA 200.7 8.72 mg/L
Cliffside 5-04 4/27/2016 Sodium(Na) EPA 200.7 12 mg/L
Cliffside S-04 4/27/2016 Hardness EPA 200.7 219 mg/L(CaCO3)
7 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for 5-4
Station I AOW ID I Collected Date ( Component I Method I <or> I Result I Units
Cliffside 5-04 4/27/2016 Zinc(Zn) EPA 200.7 < 0.005 mg/L
Cliffside 5-04 4/27/2016 Antimony(Sb) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Arsenic(As) EPA 200.8 48.4 ug/L
Cliffside 5-04 4/27/2016 Cadmium (Cd) EPA 200.8 < 1 ug/L
Cliffside S-04 4/27/2016 Chromium (Cr) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Lead (Pb) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Molybdenum(Mo) EPA 200.8 2.63 ug/L
Cliffside 5-04 4/27/2016 Nickel (Ni) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Selenium (Se) EPA 200.8 < 1 ug/L
Cliffside 5-04 4/27/2016 Thallium (TI) Low Level EPA 200.8 < 0.2 ug/L
Cliffside 5-04 4/27/2016 Mercury(Hg) 1631E 2.76 ng/L
Cliffside 5-04 4/27/2016 Flow Field Work 0.07 cfs
Cliffside 5-04 4/27/2016 pH Field Work 6.3 SI Units
Cliffside 5-04 4/27/2016 Specific Conductance Field Work 545 uS/cm
Cliffside 5-04 4/27/2016 Temperature Field Work 18 °C
Cliffside 5-04 4/27/2016 Turbidity Field Work 2.6 NTU
Cliffside 5-04 4/27/2016 TDS SM2540C 330 mg/L
Cliffside 5-04 4/27/2016 TSS 5M25400 70 mg/L
Cliffside 5-04 7/7/2014 Flow Field Work 0.02 cfs
Cliffside 5-04 4/18/2016 Sodium (Na) E200.7 12600 ug/L
Cliffside 5-04 4/18/2016 Magnesium (Mg) E200.7 18.1 mg/L
Cliffside 5-04 4/18/2016 Boron (B) E200.7 0.596 mg/L
Cliffside 5-04 4/18/2016 Strontium (Sr) E200.7 0.701 mg/L
Cliffside 5-04 4/18/2016 Aluminum (Al) E200.7 < 0.1 mg/L
Cliffside 5-04 4/18/2016 Barium, Dissolved E200.7 101 ug/L
Cliffside 5-04 4/18/2016 Manganese, Dissolved E200.7 3150 ug/L
Cliffside S-04 4/18/2016 Aluminum, Dissolved E200.7 < 100 ug/L
Cliffside S-04 4/18/2016 Iron(Fe) E200.7 2.58 mg/L
Cliffside S-04 4/18/2016 Strontium, Dissolved E200.7 652 ug/L
Cliffside 5-04 4/18/2016 Potassium (K) E200.7 9060 ug/L
Cliffside S-04 4/18/2016 Boron, Dissolved E200.7 548 ug/L
Cliffside S-04 4/18/2016 Barium (Ba) E200.7 0.105 mg/L
8 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station 1 AOW ID 1 Collected Date 1 Component I Method 1 <or> 1 Result 1 Units
Cliffside 5-04 4/18/2016 Zinc(Zn) E200.7 < 0.01 mg/L
Cliffside 5-04 4/18/2016 Manganese(Mn) E200.7 3.24 mg/L
Cliffside 5-04 4/18/2016 Zinc, Dissolved E200.7 < 10 ug/L
Cliffside 5-04 4/18/2016 Calcium(Ca) E200.7 67.5 mg/I
Cliffside 5-04 4/18/2016 Iron, Dissolved E200.7 2370 ug/L
Cliffside 5-04 4/18/2016 Sulfate E300 115 mg/L
Cliffside 5-04 4/18/2016 Chloride 800 33.6 mg/L
Cliffside S-04 4/18/2016 Mercury(Hg) EPA 1631E 2.64 ng/L
Cliffside S-04 4/18/2016 Chromium(Cr) EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside S-04 4/18/2016 Copper, Dissolved EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Arsenic, Dissolved EPA 200.8 Rev 5.4 34.2 ug/L
Cliffside 5-04 4/18/2016 Vanadium, Dissolved EPA 200.8 Rev 5.4 < 3 ug/L
Cliffside 5-04 4/18/2016 Thallium, Dissolved EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Lead (Pb) EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Thallium(TI) Low Level EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Selenium(Se) EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Lead, Dissolved EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Molybdenum, Dissolved EPA 200.8 Rev 5.4 2.4 ug/L
Cliffside 5-04 4/18/2016 Selenium, Dissolved EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Molybdenum (Mo) EPA 200.8 Rev 5.4 2.4 ug/L
Cliffside 5-04 4/18/2016 Cadmium, Dissolved EPA 200.8 Rev 5.4 < 0.8 ug/L
Cliffside 5-04 4/18/2016 Arsenic(As) EPA 200.8 Rev 5.4 37.4 ug/L
Cliffside 5-04 4/18/2016 Nickel, Dissolved EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Chromium, Dissolved EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Cobalt(Co) EPA 200.8 Rev 5.4 1.8 ug/L
Cliffside 5-04 4/18/2016 Beryllium (Be) EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Beryllium, Dissolved EPA 200.8 Rev 5.4 < 1 ug/L
Cliffside 5-04 4/18/2016 Nickel (Ni) EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Cadmium (Cd) EPA 200.8 Rev 5.4 < 0.8 ug/L
Cliffside 5-04 4/18/2016 Vanadium (V) EPA 200.8 Rev 5.4 < 3 ug/L
Cliffside 5-04 4/18/2016 Antimony, Dissolved EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Copper(Cu) EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside 5-04 4/18/2016 Cobalt, Dissolved EPA 200.8 Rev 5.4 2 ug/L
9 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
Station I AOW ID I Collected Date I Component I Method I <or> I Result I Units
Cliffside 5-04 4/18/2016 Antimony(Sb) EPA 200.8 Rev 5.4 < 5 ug/L
Cliffside S-04 4/18/2016 Chromium, Hexavalent EPA 218.7 < 0.03 ug/L
Cliffside 5-04 4/18/2016 Nitrogen, NO2 plus NO3 EPA 353.2 < 0.02 mg/L
Cliffside 5-04 4/18/2016 Methane RSK 175 Modified 405 ug/L
Cliffside S-04 4/18/2016 TDS SM 2540C 335 mg/L
Cliffside 5-04 4/18/2016 Sulfide SM 4500-52D < 0.1 mg/L
Cliffside 5-04 4/18/2016 TOC SM 53108 < 1 mg/L
Cliffside 5-04 4/18/2016 Alkalinity,Bicarbonate(CaCO3) SM2320B 96.3 mg/L
Cliffside S-04 4/18/2016 Alkalinity SM2320B 96.3 mg/L
Cliffside S-04 4/18/2016 Alkalinity,Carbonate (CaCO3) SM2320B < 5 mg/L
Cliffside 5-04 4/18/2016 TSS SM2540D < 2.5 mg/L
Cliffside 5-04 9/17/2015 Iron(Fe) E200.7 2.1 mg/L
Cliffside S-04 9/17/2015 Potassium (K) E200.7 8690 ug/L
Cliffside 5-04 9/17/2015 Iron, Dissolved E200.7 2.1 mg/L
Cliffside 5-04 9/17/2015 Barium (Ba) E200.7 0.1 mg/L
Cliffside 5-04 9/17/2015 Zinc, Dissolved E200.7 0.0041 mg/L
Cliffside 5-04 9/17/2015 Boron (B) E200.7 0.6 mg/L
Cliffside 5-04 9/17/2015 Strontium, Dissolved E200.7 0.7 mg/L
Cliffside 5-04 9/17/2015 Manganese, Dissolved E200.7 3.1 mg/L
Cliffside 5-04 9/17/2015 Aluminum, Dissolved E200.7 < 0.1 mg/L
Cliffside 5-04 9/17/2015 Sodium (Na) E200.7 12700 ug/L
Cliffside S-04 9/17/2015 Calcium(Ca) E200.7 58.1 mg/I
Cliffside 5-04 9/17/2015 Barium, Dissolved E200.7 0.11 mg/L
Cliffside S-04 9/17/2015 Zinc(Zn) E200.7 0.0062 mg/L
Cliffside S-04 9/17/2015 Manganese(Mn) E200.7 3 mg/L
Cliffside 5-04 9/17/2015 Aluminum (Al) E200.7 < 0.1 mg/L
Cliffside S-04 9/17/2015 Strontium(Sr) E200.7 0.68 mg/L
Cliffside S-04 9/17/2015 Magnesium (Mg) E200.7 15.5 mg/L
Cliffside 5-04 9/17/2015 Boron, Dissolved E200.7 0.64 mg/L
Cliffside S-04 9/17/2015 Chloride E300 33.8 mg/L
Cliffside S-04 9/17/2015 Sulfate E300 119 mg/L
10 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for 5-4
Station I AOW ID I Collected Date I Component I Method I <or> I Result I Units
Cliffside 5-04 9/17/2015 Chromium (Cr) EPA 200.8 0.22 ug/L
Cliffside 5-04 9/17/2015 Cobalt(Co) EPA 200.8 1.3 ug/L
Cliffside 5-04 9/17/2015 Thallium, Dissolved EPA 200.8 0.075 ug/L
Cliffside 5-04 9/17/2015 Chromium, Dissolved EPA 200.8 0.21 ug/L
Cliffside S-04 9/17/2015 Vanadium (V) EPA 200.8 < 1 ug/L
Cliffside 5-04 9/17/2015 Nickel (Ni) EPA 200.8 0.71 ug/L
Cliffside S-04 9/17/2015 Arsenic(As) EPA 200.8 44.8 ug/L
Cliffside S-04 9/17/2015 Thallium(TI) Low Level EPA 200.8 0.084 ug/L
Cliffside S-04 9/17/2015 Vanadium, Dissolved EPA 200.8 < 1 ug/L
Cliffside S-04 9/17/2015 Nickel, Dissolved EPA 200.8 0.73 ug/L
Cliffside 5-04 9/17/2015 Lead, Dissolved EPA 200.8 0.18 ug/L
Cliffside S-04 9/17/2015 Copper, Dissolved EPA 200.8 0.37 ug/L
Cliffside 5-04 9/17/2015 Cadmium, Dissolved EPA 200.8 < 0.08 ug/L
Cliffside 5-04 9/17/2015 Beryllium, Dissolved EPA 200.8 < 0.2 ug/L
Cliffside 5-04 9/17/2015 Antimony, Dissolved EPA 200.8 0.42 ug/L
Cliffside 5-04 9/17/2015 Selenium (Se) EPA 200.8 0.22 ug/L
Cliffside 5-04 9/17/2015 Lead (Pb) EPA 200.8 < 0.1 ug/L
Cliffside 5-04 9/17/2015 Selenium, Dissolved EPA 200.8 < 0.5 ug/L
Cliffside 5-04 9/17/2015 Cadmium (Cd) EPA 200.8 0.086 ug/L
Cliffside 5-04 9/17/2015 Cobalt, Dissolved EPA 200.8 1.1 ug/L
Cliffside S-04 9/17/2015 Antimony(Sb) EPA 200.8 < 0.5 ug/L
Cliffside 5-04 9/17/2015 Copper(Cu) EPA 200.8 < 1 ug/L
Cliffside 5-04 9/17/2015 Molybdenum, Dissolved EPA 200.8 2.5 ug/L
Cliffside 5-04 9/17/2015 Beryllium (Be) EPA 200.8 0.12 ug/L
Cliffside 5-04 9/17/2015 Molybdenum (Mo) EPA 200.8 3.1 ug/L
Cliffside 5-04 9/17/2015 Arsenic, Dissolved EPA 200.8 35.7 ug/L
Cliffside 5-04 9/17/2015 Mercury, Dissolved EPA 245.1 < 0.2 ug/L
Cliffside 5-04 9/17/2015 Mercury(Hg) EPA 245.1 < 200 ng/L
Cliffside 5-04 9/17/2015 Nitrogen, NO2 plus NO3 EPA 353.2 < 0.02 mg/L
Cliffside S-04 9/17/2015 Methane RSK 175 596 ug/L
Cliffside 5-04 9/17/2015 TDS SM 2540C 344 mg/L
Cliffside S-04 9/17/2015 Sulfide SM 4500-52D < 0.1 mg/L
Cliffside S-04 9/17/2015 TOC SM 5310B < 1 mg/L
11 of 12

Rogers Energy Complex Historic Analytical Monitoring Data for S-4
" I I I tolitiblitiit t , Nat'l. .I,. e I wits I
Cliffside S-04 9/17/2015 Alkalinity SM232013 106 mg/L
Cliffside 5-04 9/17/2015 Alkalinity,Bicarbonate(CaCO3) SM2320B 106 mg/L
Cliffside 5-04 9/17/2015 Alkalinity,Carbonate(CaCO3) SM2320B < 5 mg/L
Cliffside 5-04 9/17/2015 TSS SM2540D < 5.1 mg/L
12 of 12

Attachment 2
Rogers Energy Complex Broad River Analytical
Monitoring Data

Rogers Energy Complex Broad River Analytical Monitoring Data
As,Total Cd,Total Cr,Total Cu,Total Hg, USEPA Pb,Total Se,Total Zn,Total
Recoverable Recoverable Recoverable Recoverable 245.1 Recoverable Recoverable Recoverable TDS
Date Location C (µg/L) < (µg/L) < (µg/L) < (µg/L) < (µg/L) < (µg/L) < (µg/L) < (µg/L) (mg/L)
1/27/2011 476.0(Upstream) < 1.00 < 1.00 NA < 1.00 < 0.05 < 1.00 < 1.00 3.19 36
1/27/2011 473.1 (Downstream) < 1.00 < 1.00 NA 1.00 < 0.05 < 1.00 < 1.00 4.43 24
7/13/2011 476.0(Upstream) < 1.00 < 1.00 < 1.00 < 1.00 < 0.05 < _ 1.00 < 1.00 2.13 38
7/13/2011 473.1 (Downstream) 2.20 < 1.00 < 1.00 < 1.00 < 0.05 < 1.00 1.40 2.21 49
1/24/2012 476.0(Upstream) < 1.00 < 1.00 < 1.00 < 1.00 < 0.05 < 1.00 < 1.00 < 2.00 40
1/24/2012 473.1 (Downstream) < 1.00 < 1.00 1.15 < 1.00 < 0.05 < 1.00 < 1.00 2.09 44
8/16/2012 476.0 (Upstream) < 1.00 < 1.00 1.07 < 1.00 < 0.05 < 1.00 < 1.00 2.23 42
8/16/2012 473.1 (Downstream) < 1.00 < 1.00 1.40 1.29 < 0.05 < 1.00 < 1.00 2.71 49
1/16/2013 476.0 (Upstream) < 1.00 < 1.00 1.16 < 1.00 < 0.05 < 1.00 < 1.00 2.28 43
1/16/2013 473.1 (Downstream) < 1.00 < 1.00 1.78 1.78 < 0.05 < 1.00 < 1.00 4.03 46
7/24/2013 476.0(Upstream) < 1.00 < 1.00 1.86 1.32 < 0.05 1.11 < 1.00 3.06 32
7/24/2013 473.1 (Downstream) < 1.00 < 1.00 2.17 1.51 < 0.05 1.27 < 1.00 4.35 50
1/14/2014 476.0(Upstream) < 1.00 < 1.00 2.04 < 1.00 < 0.05 < 1.00 < 1.00 3.10 42
1/14/2014 473.1 (Downstream) < 1.00 < 1.00 1.71 1.16 < 0.05 < 1.00 < 1.00 3.94 50
7/1/2014 476.0(Upstream) < 1.00 < 1.00 3.49 2.42 < 0.05 2.40 < 1.00` 8.93 49
7/1/2014 473.1 (Downstream) < 1.00 < 1.00 1.08 2.19 < 0.05 2.60 < 1.00 10.40 68
1/13/2015 476.0(Upstream) < 1.00 < 1.00 < 1.00 < 1.00 < 0.05 < 1.00 < 1.00 14.20 37
1/13/2015 473.1 (Downstream) < 1.00 < 1.00 < 1.00 < 1.00 < 0.05 < 1.00 < 1.00 18.10 55
7/30/2015 476.0(Upstream) < 1.00 < 1.00 < 1.00 < 1.00( < 0.05 < 1.00_ 1.43 45.50 110
7/30/2015 473.1(Downstream) 1.94 < 1.00 1.18 < 1.00 < 0.05 < _ 1.00 1.64 29.90 110
2/9/2016 476.0(Upstream) < 1.00 < 0.10 1.72 1.09 < 0.05 1.06 < 1.00 5.33 37
2/9/2016 473.1 (Downstream) < 1.00 < 0.10 1.72 1.16 < 0.05 < 1.00 < 1.00 < 5.00 50