NC0000396_Horizontal Velocity Calcs_20150823

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -13D to MW -15D
DISTANCE CHANGE IN LEVEL GRADIENT
1,380 96.68 0.07006
HORIZONTAL GRADIENT (i): 0.0701
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity valups (units of ft/lav) from Tahlp 6-9
MW -13D
Water
Well ID
Elevation
Slug Out
MSL
MW -13D
2123.86
MW -15D
1 2027.18
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -13D to MW -15D
DISTANCE CHANGE IN LEVEL GRADIENT
1,380 96.68 0.07006
HORIZONTAL GRADIENT (i): 0.0701
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity valups (units of ft/lav) from Tahlp 6-9
MW -13D
Slug In
Test 2 3.16E-02
1.08E-01
Slug Out
Test 1 1.79E-01
Test 2 2.26E-01
MW -15D
Slug Out
Test 1 2.80E-01
3.39E-01
Test 2 3.93E-01
Test 3 3.55E-01
Hydraulic Conductivity (K) 0.1918 foot/day
(Geometric Mean of K for MW -13D and MW -15D)
Average Horizontal Gradient (i) 0.0701 foot/foot
Porosity (n) 45.45 percent
Velocity = 0.02956 foot/day 10.7884 foot/year
Monitoring Event:
ASSUMPTIONS:
1. K of 0.1918 ft/day based on in-situ slug and packer tests
2. Porosity is based on average value of saprolitic soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
S:\Prof\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Grad ie nts\Backup Hydraulic Velocities\MW-13D to
MW -15D

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
C13-91311 to MW-12BR
DISTANCE CHANGE IN LEVEL GRADIENT
780 18.48 0.02369
HORIZONTAL GRADIENT (i): 0.0237
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
Water
Well ID
Elevation
Slug -Out Test 2 2.14E+00
MSL
CB-9BR
2132.61
MW-12BR
1 2114.13
MSL - Feet Above Mean Sea Level
Depth measurements in feet
C13-91311 to MW-12BR
DISTANCE CHANGE IN LEVEL GRADIENT
780 18.48 0.02369
HORIZONTAL GRADIENT (i): 0.0237
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
Monitoring Event:
Hydraulic Conductivity (K) 1.6326 foot/day
(Geometric Mean of K for CB-9BR and MW-12BR)
Average Horizontal Gradient (i) 0.0237 foot/foot
Porosity (n) 34 percent
Velocity = 0.11377 foot/day 41.53 foot/year
to
ASSUMPTIONS:
1. K of 1.6326 ft/day based on in-situ slug and packer tests
2. Porosity based on values from Morris and Johnson 1967 crystalline rocks.
based on geologic conditions at the site.
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
Range from 34% to 57%. 34% used
S:\Proj\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\CB-9BR to
MW-12BR
Test 1 1.88E+00
CB-09BR
Slug -Out Test 2 2.14E+00
2.09E+00
Test 3 2.27E+00
MW-12BR
PK -SI Test 1 1.49E+00
1.13E+00
PK -SO Test 1 8.50E-01
Monitoring Event:
Hydraulic Conductivity (K) 1.6326 foot/day
(Geometric Mean of K for CB-9BR and MW-12BR)
Average Horizontal Gradient (i) 0.0237 foot/foot
Porosity (n) 34 percent
Velocity = 0.11377 foot/day 41.53 foot/year
to
ASSUMPTIONS:
1. K of 1.6326 ft/day based on in-situ slug and packer tests
2. Porosity based on values from Morris and Johnson 1967 crystalline rocks.
based on geologic conditions at the site.
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
Range from 34% to 57%. 34% used
S:\Proj\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\CB-9BR to
MW-12BR

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
CB-9SL to MW -9S
DISTANCE CHANGE IN LEVEL GRADIENT
1,095 29.49 0.02693
HORIZONTAL GRADIENT (i): 0.0269
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
Water
Well ID
Elevation
Test 2 2.36E-01
MSL
CB-9SL
2145.47
MW -9S
1 2115.98
MSL - Feet Above Mean Sea Level
Depth measurements in feet
CB-9SL to MW -9S
DISTANCE CHANGE IN LEVEL GRADIENT
1,095 29.49 0.02693
HORIZONTAL GRADIENT (i): 0.0269
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
Hydraulic Conductivity (K) 0.2395 foot/day
(Geometric Mean of K for CB-09SL)
Average Horizontal Gradient (i) 0.0269 foot/foot
Porosity (n) 45 percent
Velocity = 0.01433 foot/day 5.23 foot/year
Monitoring Event:
ASSUMPTIONS:
1. K of 0.2395 ft/day based on in-situ slug and packer tests
2. Porosity is based on average value of saprolitic soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
S:\Proj\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\CB-9SL
to MW-9SL
Slug In
Test 1 3.35E-01
Test 2 2.36E-01
CB-09SL
2,40E-01
Slug Out
Test 1 2.03E-01
Test 2 2.05E-01
Hydraulic Conductivity (K) 0.2395 foot/day
(Geometric Mean of K for CB-09SL)
Average Horizontal Gradient (i) 0.0269 foot/foot
Porosity (n) 45 percent
Velocity = 0.01433 foot/day 5.23 foot/year
Monitoring Event:
ASSUMPTIONS:
1. K of 0.2395 ft/day based on in-situ slug and packer tests
2. Porosity is based on average value of saprolitic soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
S:\Proj\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\CB-9SL
to MW-9SL

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -31311 to MW-22BR
DISTANCE CHANGE IN LEVEL GRADIENT
1,065 47.67 0.04476
HORIZONTAL GRADIENT (i): 0.0448
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
MW-22BR
Water
Well ID
Elevation
Test 2 7.92E+00
MSL
MW-3BR
2082.09
MW-22BR
1 2034.42
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -31311 to MW-22BR
DISTANCE CHANGE IN LEVEL GRADIENT
1,065 47.67 0.04476
HORIZONTAL GRADIENT (i): 0.0448
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
MW-22BR
Slug -Out
Test 1 8.35E+00
7.70E+00
Test 2 7.92E+00
Test 3 6.92E+00
Hydraulic Conductivity (K) 7.7043 foot/day
(Geometric Mean of K for MW-22BR)
Average Horizontal Gradient (i) 0.0448 foot/foot
Porosity (n) 34 percent
Velocity = 1.01 foot/day 370.21 foot/year
Monitoring Event:
June 2015
ASSUMPTIONS:
1. K of 7.7043 ft/day based on in-situ slug and packer tests
2. Porosity based on values from Morris and Johnson 1967 crystalline rocks. Range from 34% to 57%. 34% used
based on geologic conditions at the site.
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
S:\Prof\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-3BR
to MW-22BR

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -313 to MW -21D
DISTANCE CHANGE IN LEVEL GRADIENT
1,050 60.74 0.05785
HORIZONTAL GRADIENT (i): 0.0578
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
MW -21D I Slug Out I Test 1 1 6.59E-02 I 6.59E-02
Monitoring Event: June 2015
Hydraulic Conductivity (K) 0.0659 foot/day
(Geometric Mean of K for MW -21D)
Average Horizontal Gradient (i) 0.0578 foot/foot
Porosity (n) 45.45 percent
Velocity = 0.00838 foot/day 3.0604 foot/year
to
ASSUMPTIONS:
1. K of 0.0659 ft/day based on in-situ slug and packer tests
2. Porosity is based on average value of saprolitic soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
S:\Prof\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-3D
to MW -21 D
Water
Well ID
Elevation
MSL
MW -3D
2102.20
MW -21D
1 2041.46
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -313 to MW -21D
DISTANCE CHANGE IN LEVEL GRADIENT
1,050 60.74 0.05785
HORIZONTAL GRADIENT (i): 0.0578
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
MW -21D I Slug Out I Test 1 1 6.59E-02 I 6.59E-02
Monitoring Event: June 2015
Hydraulic Conductivity (K) 0.0659 foot/day
(Geometric Mean of K for MW -21D)
Average Horizontal Gradient (i) 0.0578 foot/foot
Porosity (n) 45.45 percent
Velocity = 0.00838 foot/day 3.0604 foot/year
to
ASSUMPTIONS:
1. K of 0.0659 ft/day based on in-situ slug and packer tests
2. Porosity is based on average value of saprolitic soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
S:\Prof\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-3D
to MW -21 D

Duke - Asheville
Water
Well ID Elevation
MSL
MW-9BR 1 2113.51
MW-16BR 1 2026.74
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -91311 to MW-16BR
DISTANCE CHANGE IN LEVEL GRADIENT
810 86.77 0.10712
HORIZONTAL GRADIENT (i): 0.1071
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
MW-09BR
Slug Out Test 1 8.38E-02
Test 2 8.06E-02
8,22E-02
MW-16BR
PK -SI Test 1 3.23E+01
2,84E+01
PK -SI Test 2 1.54E+01
PK -SO Test 1 3.72E+01
PK -SO I Test 2 1 3.50E+01
Hydraulic Conductivity (K) 4.0452 foot/day
(Geometric Mean of K for MW-9BR and MW-16BR)
Hydraulic Conductivity (K) 28.4000 foot/day
Average Horizontal Gradient (i) 0.1071 foot/foot
Porosity (n) 34 percent
Velocity = 8.94796 foot/day 3266 foot/year
Monitoring Event:
June 2015
ASSUMPTIONS:
1. K of 4.0452 ft/day based on in-situ slug and packer tests
2. Porosity based on values from Morris and Johnson 1967 crystalline rocks. Range from 34% to 57%. 34% used
based on geologic conditions at the site.
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
S:\Prof\Duke Energy Progress. 1026\102. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-9BR to MW-
16BR

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -9S to MW -16A
DISTANCE CHANGE IN LEVEL GRADIENT
810 88.99 0.10986
HORIZONTAL GRADIENT (i): 0.1099
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
MW -16A
Water
Well ID
Elevation
Test 2 1.93E+01
MSL
MW -95
2115.98
MW -16A
1 2026.99
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW -9S to MW -16A
DISTANCE CHANGE IN LEVEL GRADIENT
810 88.99 0.10986
HORIZONTAL GRADIENT (i): 0.1099
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hydraulic Conductivity values (units of ft/day) from Table 6-8
MW -16A
Slug In
Test 1 1.65E+01
1.81E+01
Test 2 1.93E+01
Test 3 2.38E+01
Test 5 2.57E+01
Test 7 2.50E+01
Slug Out
Test 1 9.87E+00
Test 2 1.44E+01
Test 4 2.01E+01
Test 5 1.82E+01
Test 6 1.69E+01
Test 7 1.59E+01
Monitoring Event: June 2015
Hydraulic Conductivity (K) 18.09 foot/day
(Geometric Mean of K for MW -16A)
Average Horizontal Gradient (i) 0.1099 foot/foot
Porosity (n) 46.4 percent
Velocity = 4.28 foot/day 1563.80 foot/year
to
ASSUMPTIONS:
1. K of 18.0946 ft/day based on in-situ slug and packer tests
2. Porosity is based on value of alluvial soils as determined by BLE (Appendix F).
Prepared by: TCP Date:
Checked: HJF Date: 7/30/2015
S:\Prof\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-9S to MW -16A

Duke - Asheville
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW-12BR to MW -91311
DISTANCE CHANGE IN LEVEL GRADIENT
330 0.62 0.00188
HORIZONTAL GRADIENT (i): 0.0019
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
MW-09BR
Water
Well ID
Elevation
Test 2 8.06E-02
MSL
MW-12BR
2114.13
MW-9BR
1 2113.51
MSL - Feet Above Mean Sea Level
Depth measurements in feet
MW-12BR to MW -91311
DISTANCE CHANGE IN LEVEL GRADIENT
330 0.62 0.00188
HORIZONTAL GRADIENT (i): 0.0019
Average Groundwater Velocity (V)* Phase I
*Based on the Darcy Equation where velocity equals (K x i) / n
Hvdraulic Conductivitv values (units of ft/dav) from Table 6-8
MW-09BR
Slug Out Test 1 8.38E-02
8.22E-02
Test 2 8.06E-02
MW-12BR
PK -SI Test 1 1.49E+00
1.13E+00
PK -SO Test 1 8.50E-01
Monitoring Event:
Hydraulic Conductivity (K) 0.3042 foot/day
(Geometric Mean of K for MW-9BR and MW-12BR)
Average Horizontal Gradient (i) 0.0019 foot/foot
Porosity (n) 34 percent
Velocity = 0.00168 foot/day 0.6135 foot/year
to
ASSUMPTIONS:
1. K of 0.3042 ft/day based on in-situ slug and packer tests
2. Porosity based on values from Morris and Johnson 1967 crystalline rocks
based on geologic conditions at the site.
Prepared by: TCP Date:
Checked: HJF Date:
7/30/2015
June 2015
Range from 34% to 57%. 34% used
S:\Proj\Duke Energy Progress. 1 026\1 02. Asheville Ash Basin GW Assessment Plan\1.11 CSA Reporting\tables\GW Gradients\Backup Hydraulic Velocities\MW-
12BR to MW-9BR