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TABLES
TABLE 2.4-1– GROUNDWATER MONITORING REQUIREMENTS
WELL
NOMENCLATURE
PARAMETER DESCRIPTION FREQUENCY
Monitoring Wells:
MW-7SR, MW-7D, MW-
8S, MW-8I, MW-8D,
*MW-9, *MW-10, MW-
11SR, MW-11DR, *MW-
13, MW-14, MW-15
Antimony Chromium Nickel Thallium
February, June,
October
Arsenic Copper Nitrate Water Level
Barium Iron pH Zinc
Boron Lead Selenium
Cadmium Manganese Sulfate
Chloride Mercury TDS
Note: Monitoring wells marked with * are located inside of the compliance boundary.
Table 3.1-1 - Field Data Parameters
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Page 1 of 1
APPEARANCE
Compliance Locations
2/4/2013 MW-7SR 66.92 51.44 714.51 Normal None CP N/A 2.52 7.50 NO 15.17 20 5.1 1.3 368 5.69
2/4/2013 MW-7D 102.68 50.38 714.77 Normal None CP N/A 8.53 25.50 NO 15.57 37 5.5 0.9 395 8.16
2/4/2013 MW-8S 57.49 47.77 707.63 Normal None CP N/A 1.59 5.25 NO 14.52 15 4.9 2.8 444 8.21
2/4/2013 MW-8I 120.13 49.00 705.74 Normal None LF 150 11.60 1.10 N/A 14.83 48 6.1 19.8 384 9.88
2/4/2013 MW-8D 168.89 51.27 704.76 Turbid None LF 150 19.18 1.55 N/A 14.12 82 6.4 44.0 171 3.98
2/4/2013 MW-9 30.86 3.43 648.41 Turbid None CP N/A 4.47 13.50 NO 14.30 162 6.0 37.0 382 3.69
2/4/2013 MW-10 21.00 9.52 644.85 Normal None CP N/A 1.87 8.00 NO 14.88 86 5.3 5.2 388 2.08
2/4/2013 MW-11SR 33.43 24.35 668.95 Normal None CP N/A 1.48 4.50 NO 17.44 156 5.7 2.1 118 0.53
2/4/2013 MW-11DR 42.98 24.22 668.96 Normal None CP N/A 3.06 9.75 NO 17.31 153 5.7 1.2 232 0.95
2/5/2013 MW-13 20.15 9.91 644.20 Normal None CP N/A 1.67 5.25 NO 15.36 212 6.1 3.8 178 0.19
2/4/2013 MW-14 20.67 7.05 655.79 Normal None CP N/A 2.22 6.75 NO 15.34 214 6.8 3.9 230 1.85
2/4/2013 MW-15 21.58 12.42 644.70 Normal None CP N/A 1.49 4.50 NO 16.25 100 5.2 3.4 330 1.39
2/5/2013 Tower-0.3m N/A N/A N/A Normal None NP N/A N/A N/A 7.92 120 7.0 18.8 342 11.74
Voluntary Wells
2/5/2013 MW-4S 21.16 18.37 649.35 Turbid None LF 58 0.46 0.70 N/A 11.13 160 5.4 > 1000 365 7.86
2/5/2013 MW-4D 62.58 20.12 648.26 Colloidal None LF 272 6.93 2.80 N/A 13.01 131 5.6 43.6 347 0.11
2/4/2013 MW-5S 17.67 4.59 644.82 Normal None LF 234 2.13 2.25 N/A 12.58 72 5.1 8.9 384 0.60
2/4/2013 MW-5D 81.90 1.66 648.23 Normal None LF 336 13.09 3.65 N/A 13.95 265 6.7 9.0 323 3.82
Notes:
1. Purge Methods; LF=Low Flow, CP=Conventional Purge (3-5 well volumes), NP=No Purge (HydraSleeve), EOP=Equipment Only Purge.
2. Field sampling performed by Duke Energy Carolinas, LLC personnel.
3. umho/cm indicates micro mhos per centimeter.
4. mL/min indicates milliliters per minute.
5. SU indicates Standard Units.
6. NTU indicates Nephelometric Turbidity Units.
7. Turbidity values reported as > 1000 exceed the range of the instrument.
8. mV-NHE indicates millivolts-Normal Hydrogen Electrode.
9. Information provided by Tim Hunsucker of Duke Energy Carolinas on February 13, 19, and March 8, 2013.
10. N/A indicates not applicable.
TEMP
(deg C)
SPECIFIC
CONDUCTANCE
(umho/cm)
pH
(SU)
TURBIDITY
(NTU)
ORP
(mV-NHE)
DO
(mg/L)ODOR
PURGE
METHOD
PUMP
RATE
(mL/min)
WELL
VOLUME
(gallons)
EVAC
VOLUME
(gallons)
EVAC
(yes/no)
SAMPLE
DATE
WELL
NO.
WELL
DEPTH
(feet)
DEPTH TO
WATER
(feet)
WATER
ELEV.
(feet)
Table 3.1-2 - Groundwater Field and Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Compliance Wells
Page 1 of 2
Field pH Std. Units 5193 5.1 5.5 4.9 6.1 6.4 6.0 6.5-8.5
Specific Conductance umho/cm 5193 20 37 15 48 82 162 -
Temperature °C 5193 15.17 15.57 14.52 14.83 14.12 14.30 -
Top of Casing feet -765.95 765.15 755.40 754.74 756.03 651.84 -
Depth to Water feet -51.44 50.38 47.77 49.00 51.27 3.43 -
Water Elevation feet -714.51 714.77 707.63 705.74 704.76 648.41 -
Well Depth feet -66.92 102.68 57.49 120.13 168.89 30.86 -
Turbidity NTU 5193 1.3 0.9 2.8 19.8 44.0 37.0 NE
Antimony µg/L 248 <1 <1 <1 <1 <1 <1 NE
Arsenic µg/L 248 <1 <1 <1 <1 <1 <1 10
Barium mg/L 248 0.014 0.027 0.051 0.035 0.036 0.074 0.7
Boron mg/L 248 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 0.7
Cadmium µg/L 248 <1 <1 <1 <1 <1 <1 2
Chloride mg/L 248 1.8 1.1 2 1.1 1.3 2.4 250
Chromium mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.01
Copper mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 1
Iron mg/L 248 0.158 <0.01 0.012 0.497 1.72 1.95 0.3
Lead µg/L 248 <1 <1 <1 <1 <1 1.12 15
Manganese mg/L 248 0.043 <0.005 0.09 0.168 0.143 0.049 0.05
Mercury µg/L 248 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 1
Nickel mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.1
Nitrate (as Nitrogen)mg/L 248 0.02 <0.023 <0.023 <0.023 0.05 0.08 10
Selenium µg/L 248 <1 <1 <1 <1 <1 <1 20
Sulfate mg/L 248 0.21 0.25 0.17 0.27 1.3 32 250
Thallium µg/L 248 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 NE
Total Dissolved Solids mg/L 248 15 39 12 91 150 170 500
Zinc mg/L 248 <0.005 0.005 <0.005 <0.005 0.009 0.007 1
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. NE indicates not established. Blank cells indicate that there is no information relevant to the respective row.
4. Bold values indicate values that attain or exceed the 15A NCAC 2L Standard.
5. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
6. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
7. SU indicates Standard Units.
8. umho/cm indicates micromhos per centimeter.
9. NTU indicates Nephelometric Turbidity Units.
Laboratory Certificate Codes:
Duke Energy Carolinas Field #5193
Duke Energy Analytical Laboratory #248
Sample Location
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
MW-7SR MW-7D MW-8S MW-8I MW-8D MW-9
15A
NCAC 2LParameterUnits
Certificate
Code
Table 3.1-2 - Groundwater Field and Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Compliance Wells
Page 2 of 2
Field pH Std. Units 5193 5.3 5.7 5.7 6.1 6.8 5.2 6.5-8.5
Specific Conductance umho/cm 5193 86 156 153 212 214 100 -
Temperature °C 5193 14.88 17.44 17.31 15.36 15.34 16.25 -
Top of Casing feet -654.37 693.30 693.18 654.11 662.84 657.12 -
Depth to Water feet -9.52 24.35 24.22 9.91 7.05 12.42 -
Water Elevation feet -644.85 668.95 668.96 644.20 655.79 644.70 -
Well Depth feet -21.00 33.43 42.98 20.15 20.67 21.58 -
Turbidity NTU 5193 5.2 2.1 1.2 3.8 3.9 3.4 NE
Antimony µg/L 248 <1 <1 <1 <1 <1 <1 <1 NE
Arsenic µg/L 248 <1 <1 <1 <1 <1 <1 <1 10
Barium mg/L 248 0.051 0.025 0.075 0.289 0.01 0.075 <0.005 0.7
Boron mg/L 248 0.178 0.349 0.342 <0.05 0.109 0.288 <0.05 0.7
Cadmium µg/L 248 <1 <1 <1 <1 <1 <1 <1 2
Chloride mg/L 248 6.8 6.7 6.7 5.1 9.2 6.4 <0.1 250
Chromium mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.01
Copper mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 1
Iron mg/L 248 0.079 0.028 <0.01 21.1 0.104 0.058 <0.01 0.3
Lead µg/L 248 <1 <1 <1 <1 <1 <1 <1 15
Manganese mg/L 248 0.033 0.012 0.088 10.5 0.018 0.049 <0.005 0.05
Mercury µg/L 248 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 1
Nickel mg/L 248 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 <0.005 0.1
Nitrate (as Nitrogen)mg/L 248 0.05 0.16 0.17 <0.023 0.07 0.11 <0.023 10
Selenium µg/L 248 <1 <1 <1 <1 <1 1.93 <1 20
Sulfate mg/L 248 21 44 43 14 35 27 <0.1 250
Thallium µg/L 248 <0.2 <0.2 <0.2 <0.2 <0.2 <0.2 NE
Total Dissolved Solids mg/L 248 73 110 110 130 150 81 <0.2 500
Zinc mg/L 248 <0.005 <0.005 0.009 <0.005 <0.005 0.006 <0.005 1
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. NE indicates not established. Blank cells indicate that there is no information relevant to the respective row.
4. Bold values indicate values that attain or exceed the 15A NCAC 2L Standard.
5. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
6. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
7. SU indicates Standard Units.
8. umho/cm indicates micromhos per centimeter.
9. NTU indicates Nephelometric Turbidity Units.
MW-11SR
15A
NCAC 2L
Sample Location
MW-10 Field BlankMW-11DR MW-13 MW-14 MW-15
6.0
23.16
748
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Parameter Units
Certificate
Code
Laboratory Certificate Codes:
Duke Energy Carolinas Field #5193
Duke Energy Analytical Laboratory #248
89
16.01
764.74
16.7
Table 3.1-3 - Groundwater Field and Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Voluntary Wells
Page 1 of 1
Field pH Std. Units 5193 5.4 5.6 5.1 6.7 6.5-8.5
Specific Conductance umho/cm 5193 160 131 72 265 -
Temperature °C 5193 11.13 13.01 12.58 13.95 -
Turbidity NTU 5193 >1,000 43.6 8.9 9.0 NE
Antimony µg/L 248 <5 <1 <1 <1 NE
Arsenic µg/L 248 <5 <1 <1 <1 10
Barium mg/L 248 0.262 0.074 0.021 0.034 0.7
Boron mg/L 248 0.361 0.251 0.336 0.337 0.7
Cadmium µg/L 248 <5 <1 <1 <1 2
Chloride mg/L 248 7.6 5.7 8.1 7.2 250
Chromium mg/L 248 0.018 <0.005 <0.005 <0.005 0.01
Copper mg/L 248 0.016 <0.005 <0.005 <0.005 1
Iron mg/L 248 11.2 1.08 0.155 0.208 0.3
Lead µg/L 248 31.3 <1 <1 <1 15
Manganese mg/L 248 1.75 0.048 0.12 0.022 0.05
Mercury µg/L 248 <0.5 <0.05 0.14 <0.05 1
Nickel mg/L 248 0.016 <0.005 <0.005 <0.005 0.1
Nitrate (as Nitrogen)mg/L 248 0.08 0.04 0.04 0.15 10
Selenium µg/L 248 5.62 <1 <1 <1 20
Sulfate mg/L 248 44 33 11 47 250
Thallium µg/L 248 <1 <0.2 <0.2 <0.2 NE
Total Dissolved Solids mg/L 248 1100 130 65 210 500
Zinc mg/L 248 0.281 0.006 <0.005 <0.005 1
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. Bold values indicate values that attain or exceed the 15A NCAC 2L Standard.
4. NE indicates not established. Blank cells indicate that there is no information relevant to the respective row.
5. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
6. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
7. SU indicates Standard Units.
8. umho/cm indicates micromhos per centimeter.
9. NTU indicates Nephelometric Turbidity Units.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Laboratory Certificate Codes:
Duke Energy Carolinas Field #5193
Duke Energy Analytical Laboratory #248
Sample Location
MW-4S MW-4D MW-5S MW-5D
15A
NCAC 2LParameterUnits
Certificate
Code
TABLE 3.1-4 - EXCEEDANCES OF 2L STANDARDS Iron Manganese pH 2L Standard 300 µg/L 50 µg/L 6.5 - 8.5 SU Well ID Range of Exceedances Range of Exceedances Range of Exceedances µg/L µg/L SU Comments Concerning Exceedances MW-7SR 495 – 790 67 – 413 5.1 – 5.5 Iron concentrations have been generally decreasing over the monitoring period and have been less than the 2L Standard during the last two sampling events. Manganese concentrations have been generally decreasing over the monitoring period and were less than the 2L Standard during the February 2013 sampling event. pH has been generally consistent over the monitoring period. MW-7D No Exceedances No Exceedances 5.5 – 5.8 pH has been generally consistent over the monitoring period. MW-8S No Exceedances 90 – 144 4.9 – 5.3 Manganese concentrations have been generally decreasing over the monitoring period. pH has been generally consistent over the monitoring period. MW-8I 497 – 976 52 – 538 6.1 – 6.4 Iron concentrations have been generally decreasing over the monitoring period. Manganese concentrations have been less than the 2L Standard during 4 of the 7 monitoring events. pH has been generally consistent over the monitoring period. Turbidity has been >10 NTUs during every sampling event which may be affecting the iron and/or manganese concentrations. Well may be a candidate for redevelopment. MW-8D 777 – 2640 82 – 743 6.4 – 6.5 Iron concentrations over the monitoring period appear to be related to turbidity in the well. Manganese concentrations have generally been decreasing over the monitoring period. The February 2013 pH concentration is the first measurement outside of the 2L Standard range. Turbidity has been >10 NTUs during every sampling event which may be affecting the iron and/or manganese concentrations. Well may be a candidate for redevelopment.Note: Monitoring wells marked with * are located inside of the compliance boundary.
TABLE 3.1-4 - EXCEEDANCES OF 2L STANDARDS Iron Manganese pH 2L Standard 300 µg/L 50 µg/L 6.5 - 8.5 SU Well ID Range of Exceedances Range of Exceedances Range of Exceedances µg/L µg/L SU Comments Concerning Exceedances MW-9* 381 – 2440 62 – 282 6.0 – 6.4 Iron concentrations have been variable over the monitoring period. Manganese concentrations have generally been decreasing and have been less than the 2L Standard during the last 3 sampling events. pH has been generally consistent over the monitoring period. Turbidity has been >10 NTUs during every sampling event which may be affecting the iron and/or manganese concentrations. Well may be a candidate for redevelopment. MW-10* 310 – 1,710 67 – 355 5.3 – 5.6 Iron and manganese concentrations have been variable over the monitoring period and may be affected by turbidity which has ranged from 3.2 to 84 NTUs. pH has been generally consistent over the monitoring period. MW-11SR 486 59 – 384 5.6 – 6.1 Iron concentration exceeded the 2L Standard during the first sampling event and has been less than the 2L Standard during the last 6 events. Manganese concentrations exceeded the 2L Standard during the first 2 sampling events and have been less than the 2L Standard during the last 5 events. pH has been generally consistent over the monitoring period. MW-11DR No Exceedances 87 – 168 5.6 – 5.8 Manganese concentrations and pH have generally been consistent over the monitoring period. MW-13* 13,500– 23,000 10,000 – 11,200 6.0 – 6.4 Iron and manganese concentrations and pH have generally been consistent over the monitoring period. MW-14 378 – 935 55 – 353 No Exceedances Iron concentrations have been less than the 2L Standard during 5 of the 7 monitoring events including the last 3. Manganese concentrations have been less than the 2L Standard during 3 of the 7 monitoring events and appear to be generally decreasing. MW-15 399 52 – 86 5.1 – 5.3 Only iron exceedance was during the February 2012 sampling event. Manganese concentrations have generally been consistent over the monitoring period and have been less than the 2L Standard during the last 2 monitoring events. pH has been generally consistent over the monitoring period. Note: Monitoring wells marked with * are located inside of the compliance boundary.
TABLE 4.1-1 Hydraulic Conductivity ‘k’
Stratigraphic
Unit
Sample Set
(N)
Geometric
Mean
(cm/sec)
Geometric
+1 Standard
Deviation
(cm/sec)
Geometric
-1 Standard
Deviation
(cm/sec)
Geometric
Median
(cm/sec)
F n/a 1.45E-05 1.40E-04 1.52e-06 1.47E-05
S-M1/M2 96 1.45E-04 1.40E-03 1.52E-05 1.47E-04
D 117 1.08E-04 1.57E-03 7.48E-06 1.30E-04
Notes:
1) Data for the D (bedrock) layer is from other Carolina sites with foliated/layered bedrock.
The ‘k’ values are biased due some of the tests being performed in highly fractured
bedrock zones. Data for the S-M1/M2 (alluvium-soil-saprolite) layer combines data from
other Carolina sites with foliated/layered bedrock and data from the Riverbend site.
2) ‘k’ values have an approximate lognormal distribution. The geometric mean, median,
and standard deviation are estimated by taking the log of the values and running standard
statistics on the log values, then converting those values back.
3) Assume all three “k’ components are equal (kx=ky=kz).
4) Estimates for F (fill) are based on data that indicates the ‘k’ for fill is about an order of
magnitude lower than the in-situ material used for the fill (after compaction).
References
Anderson, M. P. and Woessner, W. W., 1992, Applied Groundwater Modeling: Simulation of
Flow and Advective Transport: Academic Press, Inc., 381p.
Bear, Jacob, 1972, Dynamics of Fluids in Porous Media, Dover, 764p.
Brassington, R., 1998, Field Hydrogeology: John Wiley & Sons, Inc., 248p.
Fetter, C.W., 2000, Applied Hydrogeology, Fourth Edition, Prentice Hall, 598p.
Sanders, L. L., 1998, A Manual of Field Hydrogeology: Prentice Hall, 381p.
Weight, W. D. and Sunderegger, J. L., 2000, Manual of Applied Field Hydrogeology: McGraw-
Hill, 608p.
TABLE 4.1-2 Parameters for Soil
Stratigraphic
Unit
Sample Set
(N)
Minimum
Value
Maximum
Value
Total Porosity
Mean+Standard
Deviation (%)
F 17 42 50 45.4+2.5
S-M1/M2 43 41 45 42.7+0.8
Stratigraphic
Unit
Sample Set
(N)
Minimum
Value
Maximum
Value
Specific Yield
~= Effective
Porosity
Mean+Standard
Deviation (%)
Specific
Storage
(1/ft)
F 11 0.9 23 10.5+7.7 6.1E-05 to
4.0E-05
S-M1/M2 29 9 32 25.9+4.7 3.0E-04 to
1.5E-04
Notes:
1) Total Porosity and Specific Yield are estimated from soil testing using Fetter/Bear
Diagrams. The values are consistent with published values.
2) Specific Storage values are from published values. Use the midpoint, perform sensitivity
analysis.
References
Anderson, M. P. and Woessner, W. W., 1992, Applied Groundwater Modeling: Simulation of
Flow and Advective Transport: Academic Press, Inc., 381p.
Bear, Jacob, 1972, Dynamics of Fluids in Porous Media, Dover, 764p.
Brassington, R., 1998, Field Hydrogeology: John Wiley & Sons, Inc., 248p.
Fetter, C.W., 2000, Applied Hydrogeology, Fourth Edition, Prentice Hall, 598p.
Sanders, L. L., 1998, A Manual of Field Hydrogeology: Prentice Hall, 381p.
Weight, W. D. and Sunderegger, J. L., 2000, Manual of Applied Field Hydrogeology: McGraw-
Hill, 608p.
TABLE 4.1-3 Parameters for Rock
Stratigraphic Unit Secondary (Effective) Porosity ≈
Specific Yield (%)1,3
Specific Storage
(1/ft)2
D 0.1 to 1.0 <1.0E-06
Notes:
1) Values are based on published values. Recommend using 0.5% for D.
2) For Specific Storage, use 1.0E-06 for D Unit.
3) Effective porosity and specific yield are not synonymous; however, for practical purposes
they may be estimated to be approximately equal in value.
References
Anderson, M. P. and Woessner, W. W., 1992, Applied Groundwater Modeling: Simulation of
Flow and Advective Transport: Academic Press, Inc., 381p.
Bear, Jacob, 1972, Dynamics of Fluids in Porous Media, Dover, 764p.
Brassington, R., 1998, Field Hydrogeology: John Wiley & Sons, Inc., 248p.
Fetter, C.W., 2000, Applied Hydrogeology, Fourth Edition, Prentice Hall, 598p.
Sanders, L. L., 1998, A Manual of Field Hydrogeology: Prentice Hall, 381p.
Weight, W. D. and Sunderegger, J. L., 2000, Manual of Applied Field Hydrogeology: McGraw-
Hill, 608p.
Table 4.3-1 - Field and Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Ash Basin Water Quality Sample
Page 1 of 1
Field pH Std. Units 5193 7.0
Specific Conductance umho/cm 5193 120
Temperature °C 5193 7.92
Turbidity NTU 5193 18.8
Antimony µg/L 248 2.8
Arsenic µg/L 248 19.2
Barium mg/L 248 0.133
Boron mg/L 248 0.175
Cadmium µg/L 248 <1
Chloride mg/L 248 7
Chromium mg/L 248 <0.005
Copper mg/L 248 <0.005
Iron mg/L 248 0.059
Lead µg/L 248 <1
Manganese mg/L 248 0.017
Mercury µg/L 248 <0.05
Nickel mg/L 248 0.006
Nitrate (as Nitrogen)mg/L 248 <0.023
Selenium µg/L 248 <1
Sulfate mg/L 248 28
Thallium µg/L 248 0.672
Total Dissolved Solids mg/L 248 78
Zinc mg/L 248 0.011
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
3. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
4. SU indicates Standard Units.
5. umho/cm indicates micromhos per centimeter.
6. NTU indicates Nephelometric Turbidity Units.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Parameter Units
Certificate
Code
Sample Location
Tower-0.3 m
Laboratory Certificate Codes:
Duke Energy Carolinas Field #5193
Duke Energy Analytical Laboratory #248
Table 4.3-2 - Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Ash Basin--Cation and Anions
Page 1 of 1
Alkalinity (as CaCO3)mg/L 248 16.0
Calcium mg/L 248 9.86
Chloride mg/L 248 7
Magnesium mg/L 248 2.51
Nitrate (as Nitrogen)mg/L 248 <0.023
Potassium mg/L 248 3.3
Sodium mg/L 248 5.38
Sulfate mg/L 248 28
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
3. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Parameter Units
Certificate
Code
Sample Location
Tower-0.3 m
Laboratory Certificate Codes:
Duke Energy Carolinas Field #5193
Duke Energy Analytical Laboratory #248
Table 4.3-3 - Groundwater Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Compliance Wells--Cations and Anions
Page 1 of 2
Alkalinity (as CaCO3)mg/L 248 7.2 17.0 3.3 24.0 41.0 42.0 NE
Calcium mg/L 248 0.312 2.43 0.318 2.3 5.58 13.9 NE
Chloride mg/L 248 1.8 1.1 2 1.1 1.3 2.4 250
Magnesium mg/L 248 1.07 0.898 0.25 0.692 1.34 3.93 NE
Nitrate (as Nitrogen)mg/L 248 0.02 <0.023 <0.023 <0.023 0.05 0.08 10
Potassium mg/L 248 0.776 0.949 0.648 0.979 1.14 1.26 NE
Sodium mg/L 248 1.11 3.33 1.18 7.42 13 11.8 NE
Sulfate mg/L 248 0.21 0.25 0.17 0.27 1.3 32 250
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. NE indicates not established. Blank cells indicate that there is no information relevant to the respective row.
4. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
5. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Laboratory Certificate Codes:
Duke Energy Analytical Laboratory #248
Parameter Units
Certificate
Code
15A
NCAC 2L
Sample Location
MW-9MW-7SR MW-7D MW-8S MW-8I MW-8D
Table 4.3-3 - Groundwater Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Compliance Wells--Cations and Anions
Page 2 of 2
Alkalinity (as CaCO3)mg/L 248 6.8 15.0 14.0 81.0 56.0 5.3 1.3 NE
Calcium mg/L 248 4.32 9.42 8.91 10.3 7.15 3.32 0.01 NE
Chloride mg/L 248 6.8 6.7 6.7 5.1 9.2 6.4 <0.1 250
Magnesium mg/L 248 2.72 6.05 6.13 5.23 18.1 2.58 0.009 NE
Nitrate (as Nitrogen)mg/L 248 0.05 0.16 0.17 <0.023 0.07 0.11 <0.023 10
Potassium mg/L 248 0.401 1.62 2.08 0.458 0.215 1.22 <0.1 NE
Sodium mg/L 248 6.28 8.03 7.22 3.08 2.65 9.41 <0.05 NE
Sulfate mg/L 248 21 44 43 14 35 27 <0.1 250
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. NE indicates not established.
4. Laboratory data with the "<" beside the value indicates that a parameter was detected at concentrations less than the report detection limit (RDL).
5. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Parameter Units
Certificate
Code MW-10
Sample Location
MW-11SR MW-11DR MW-13 MW-14 MW-15
Laboratory Certificate Codes:
Duke Energy Analytical Laboratory #248
15A
NCAC 2LField Blank
Table 4.3-3 - Groundwater Analytical Results
Duke Energy Carolinas, LLC/Riverbend Steam Station
Riverbend Ash Basin - NPDES Permit 0004961
Voluntary Wells--Cations and Anions
Page 1 of 1
Alkalinity (as CaCO3)mg/L 248 14 18 6.6 77 NE
Calcium mg/L 248 22.2 10.6 0.888 24.7 NE
Chloride mg/L 248 7.6 5.7 8.1 7.2 250
Magnesium mg/L 248 17.2 4.13 0.797 12.3 NE
Nitrate (as Nitrogen)mg/L 248 0.08 0.04 0.04 0.15 10
Potassium mg/L 248 3.34 0.567 0.123 1.07 NE
Sodium mg/L 248 16.9 8 10.5 7.82 NE
Sulfate mg/L 248 44 33 11 47 250
Notes:
1. Concentrations presented in milligrams per liter (mg/L) and micrograms per liter (µg/L).
2. 15A NCAC 2L Standard is from "North Carolina Administrative Code, Title 15A: Department of Environment and Natural Resources, Subchapter 2L - Groundwater Classifications and Standards,"
NCDENR (last amended on January 1, 2010), Appendix I revised July 16, 2012
3. NE indicates not established.
4. Data obtained from Electronic Data Deliverable (EDD) provided by Tim Hunsucker of Duke Energy Carolinas on April 2, 2013.
Sample Date: February 4 and 5, 2013
Field Sampling performed by Duke Energy Carolinas, LLC
Laboratory Certificate Codes:
Duke Energy Analytical Laboratory #248
Parameter Units
Certificate
Code
15A
NCAC 2L
Sample Location
MW-4S MW-5DMW-5SMW-4D
TABLE 4.10-1 Filtered and Unfiltered Analytical Results
Sample
Location
Iron,
unfiltered
(g/L)
Iron,
filtered
(g/L)
Manganese,
unfiltered
(g/L)
Manganese,
filtered
(g/L)
2L Standard 300 µg/L 300 µg/L 50 µg/L 50 µg/L
MW-7D <10 <10 <5 <5
MW-7SR 158 132 43 49
MW-8S 12 <10 90 99
MW-8I 497 38 168 <5
MW-8D 1,720 71 143 19
MW-9 1,950 13 49 5
MW-10 79 15 33 36
MW-11SR 28 14 12 12
MW-11DR <10 <10 88 89
MW-13 21,100 20,900 10,500 10,400
MW-14 104 <10 18 <5
MW-15 58 <10 49 49
1. Bold indicates results in excess of the 2L Standard.
2. Results provided by Duke Energy from February 4-5, 2013 sampling event.
3. Laboratory data with the "<" beside the value indicates that a parameter was detected at
concentrations less than the report detection limit (RDL).
1 of 1
Sample ID SB-9A-1.5'SB-9A-16.5'SB-9A-26.5'SB-10A-5'SB-10A-13.5'SB-10A-20'SB-13A-6'SB13A-15'
Sample Date 4/16/2013 4/16/2013 4/16/2013 4/16/2013 4/16/2013 4/16/2013 4/15/2013 4/15/2013
Sample Time 13:45 14:15 14:45 11:30 11:45 12:00 14:10 14:30
Sample Depth (ft bgs)0.5 - 1.5 15 - 16.5 25 - 26.5 4 - 5 12 - 13.5 18.5 - 20 5 - 6 13.5 - 15
Metals
(EPA Method 6010)
Iron (mg/kg)27,000 33,900 25,500 27,900 22,400 26,400 42,500 42,300 150
Manganese (mg/kg)455 649 117 133 194 197 967 523 65
Cation Exchange Capacity (meq/100g)10.7 15.4 14.3 18.2 13.8 11.8 7.0 15.1 NSE
(EPA Method 9081)
pH (Standard Units)4.7 6.1 5.8 5.0 5.2 5.3 5.1 5.2 NSE
(EPA Method 9045)
Oxidation/Reduction Potential (mV)416 391 385 359 360 358 430 305 NSE
(SM 2580B)
Ion Scan
(SW 9056A)
Nitrate (mg/kg)<3.7 <3.4 <3.7 <3.6 <3.3 <3.4 <3.9 <3.6 NSE
Sulfate (mg/kg)100 <14 <15 <15 <13 <13 18 91 NSE
Notes:
1. ft bgs indicates feet below ground surface.
2. mg/kg indicates milligrams per kilogram.
3. meq/100g indicates milliequivalents per 100 grams
4. mV indicates millivolts.
5. EPA indicates United States Environmental Protection Agency.
6. SM indicates Standard Method.
7. SW indicates Solid Waste.
8. < results indicate that the anaylte was not measured at a concentration which attains or exceeds the laboratory method reporting limit.
9. NSE indicates no standard established.
10. IHSB PSRGs = NCDENR Inactive Hazardous Sites Branch Preliminary Soil Remediation Goals, February 2013.
Table 4.11A-1
Summary of Soil Analytical Results
Riverbend Steam Station
Mount Holly, North Carolina
IHSB
Protection of
Groundwater
PSRGs
(mg/kg)