1812_DukeMarshall_ILFPh4_Piezometer_Certification_FID1776801_20230314

526 South Church St. Charlotte, NC 28202
Mailing Address P.O. Box 1006 Mail Code EC 13K. Charlotte, NC 28201-1006

www.duke-energy.com Page 1 of 1
March 14, 2023 North Carolina Department of Environmental Quality Division of Waste Management Solid Waste Section 2090 U.S. Highway 70 Swannanoa, NC 28778 Attn: Ms. Sarah Moutos (submitted electronically) Re: Piezometer Certification and Installation Records Submittal Industrial Landfill No.1 Permit No. 1812-INDUS-2008
Marshall Steam Station Terrell, North Carolina 28682 Dear Ms. Moutos: The Solid Waste Section approved Duke Energy’s request for installing four piezometers associated with Industrial Landfill No.1 (1812-INDUS-2008) Phase 4 in a letter dated February 10, 2023. The four piezometers included CLF23-405, CLF23-406, CLF23-407, and CLF23-408.
Duke Energy is providing the certification report with well construction records and boring logs for the four piezometer installations with this submittal. The piezometer installations were conducted by AECOM and South Atlantic Environmental Drilling and Construction Co. (SAEDACCO) between February 13 and 16, 2023. Well construction records were also submitted separately to the NCDEQ Information Processing Unit.
If you have any questions or concerns with this submittal, please do not hesitate to contact me at
[e-mail] or [phone].
Respectfully submitted,
Ashley Healy, P.G. Environmental Services Attachments: Marshall Steam Station: Certification of Piezometer Installation (AECOM, March 2023)
cc (via e-mail): Claire Osborn, NCDEQ Sherri Stanley, NCDEQ Ed Mussler, NCDEQ Scott Saunders, Duke Energy Chris Varner, Duke Energy Ryan Doyle, AECOM Tyler Hardin, Duke Energy Ed Sullivan, Duke Energy

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Ashley Healy, P.G.
Scott Saunders, P.E.
400 South Tryon Street
Charlotte, NC 28202

AECOM 5438 Wade Park Boulevard Raleigh, NC 27607 T: 919.461.1100
aecom.com

March 8, 2023

Marshall Steam Station: Certification of Piezometer Installation
Dear Ms. Healy,
To satisfy the requirements outlined in the North Carolina Department of Environmental Quality (DEQ) Division of Solid Waste
Management Facility Permit, AECOM is providing Duke Energy with this memorandum to certify the installation of four new
piezometers at the Marshall Steam Station in Terrell, North Carolina. Specifically, the following piezometers were installed by
South Atlantic Environmental Drilling and Construction Co. (SAEDACCO), a North Carolina licensed driller (NC Well Contractor
Certification Number 4478-A) between February 13 and 16, 2023: CLF23-405, CLF23-406, CLF23-407, and CLF23-408.
Piezometer details are presented in Table 1, below. Installation of these piezometers was performed in accordance with 15
NCAC Subchapter 02C – Well Construction Standards.
Table 1. Piezometer Installation Details
Well ID Groundwater
Flow Zone
Well
Diameter
Water Level Below
Top of Casing(1)
Well Depth Below
Top of Casing
Screened
Interval
CLF23-405 Shallow 2-inches 5.38 ft 42 ft 32-42 ft
CLF23-406 Shallow 2-inches 6.65 ft 43 ft 33-43 ft
CLF23-407 Shallow 2-inches 19.40 ft 43 ft 33-43 ft
CLF23-408 Shallow 2-inches 5.49 ft 35 ft 25-35 ft
(1) Water levels below top of casing were measured approximately 24 hours after piezometer installation, between
February 15 to February 16.
Please do not hesitate to contact Ryan Doyle with any questions or for additional information.
Yours sincerely,

Ryan P. Doyle, PE
Geotechnical Engineer
AECOM
T: 919-461-1165
E: [e-mail]

enclosures: GW-1 Well Construction Records
Boring Logs for New Piezometers

cc: John Bove, PE
Zach Thompson
4478-A
SAEDACCO Inc
X
2-14-2023 CLF-23-405
Duke Energy
8320 NC-150, Sherrills Ford, NC, 28673
Catawba
35.3657 80.5830
X
X
1
42
5.4
8.25"
HSA
0 32 2"SCH-40 PVC
32 42 2" .010 SCH-40 PVC
0 27 Portland Injection
30 42 Filter Sand #2
0 7 Coal Ash
7 42 Brown Sand
Bentonite seal from 27-30'
2/16/2023
Zach Thompson
4478-A
SAEDACCO Inc
X
2-14-2023 CLF-23-406
Duke Energy
8320 NC-150, Sherrills Ford, NC, 28673
Catawba
35.3147 80.9719
X
X
1
43
6.7
8.25"
HSA
0 33 2"SCH-40 PVC
33 43 2" .010 SCH-40 PVC
0 27 Portland Injection
31 43 Filter Sand #2
0 9 Coal Ash
9 43 Brown Sand
Bentonite seal from 27-31'
2/16/2023
Zach Thompson
4478-A
SAEDACCO Inc
X
2-15-2023 CLF-23-407
Duke Energy
8320 NC-150, Sherrills Ford, NC, 28673
Catawba
35.6183 80.9745
X
X
1
43
19.4
8.25"
HSA
0 33 2"SCH-40 PVC
33 43 2" .010 SCH-40 PVC
0 28 Portland Injection
31 43 Filter Sand #2
0 43 Brown Sand
Bentonite seal from 28-31'
2/16/2023
Zach Thompson
4478-A
SAEDACCO Inc
X
2-15-2023 CLF-23-408
Duke Energy
8320 NC-150, Sherrills Ford, NC, 28673
Catawba
35.6165 80.9741
X
X
1
35
5.5
8.25"
HSA
0 25 2"SCH-40 PVC
25 35 2" .010 SCH-40 PVC
0 19 Portland Injection
23 35 Filter Sand #2
0 35 Brown Sand
Bentonite seal from 19-23'
2/16/2023
100
88
96
75
96
88
100
92
100
2.0" ID Sch 40 PVC Riser
Cement/Bentonite Grout
Bentonite Seal
807.3
NM
NM
NM
NM NM 0.5 0.5
<0.5 0.5 0.5 0.5
<0.5 <0.5 0.5 1.0
0.5 0.5 0.5 1.0
0.5 1.0 0.5 0.5
<0.5
800.3
792.3
787.3
ASH - gray to black, moist to wet, very loose to loose
RESIDUAL - clay with silt (CL), dark gray to brown, wet, soft,micaceous, trace organics
SAPROLITE - silty clay (CL-ML) with find sand, brown togreenish brown, moist to wet, soft
SAPROLITE - silty fine sand (SM), gray and black to reddish
brown, moist to wet, very loose to medium dense
2232
1122
WOHWOH11
WOHWOH12
WOHWOH12
2222
2223
3333
3
SS-1
SS-2
SS-3
SS-4
SS-5
SS-6
SS-7
SS-8
SS-9
7.0
15.0
20.0
0.0
GroundwaterLevel(s)
SPT
DrillingContractor
Auto
Total Depthof Borehole
Ryan Doyle
5.4' from TOC. TOC elevation: 810.29
Drill RigType
42.1 feet
SAEDACCO
CoordinateLocation
Borehole Backfill
SurfaceElevation
CheckedByDate(s)Drilled
Drill BitSize/Type 4.25" ID HSA
2/13/2023
SamplingMethod(s)
Hollow Stem Auger (HSA)
Standpipe Piezometer
Shaun Becker
HammerData
DrillingMethod
D50 Track
N 684,920.6 E 1,413,022.7
807.3 ft above msl
LoggedBy
Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer805
800
795
790
785
780
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:19 AMLog of
CLF 23-405
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
0
5
10
15
20
25
30
Sheet 1 of 2
100
75
50
0
Filter Sand
2.0" ID Sch 40 PVC0.010" Slotted Screen
<0.5 1.0 2.5
NM NM 1.0 3.0
2.0 3.0 NM NM
768.3
765.2
SAPROLITE - silty fine sand (SM), reddish brown to gray, moistto wet, medium dense to very dense
End of Boring at 42.1´ bgs
467
55714
54823
100/1
SS-9
SS-10
SS-11
SS-12
39.0
42.1Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer775
770
765
760
755
750
745
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:19 AMLog of
CLF 23-405
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
30
35
40
45
50
55
60
65
Sheet 2 of 2
67
100
67
83
100
54
63
63
54
2.0" ID Sch 40 PVC Riser
Cement/Bentonite Grout
Bentonite Seal
810.8
NM
<0.5 2.5 2.5 0.5
<0.5 1.5 2.5 NM
1.5 1.5 1.5 NM
1.0 1.0 <0.5 NM
1.0 1.5 NM NM
<0.5 1.0 1.0 NM
1.5 1.0 2.5 NM
4.5+ 4.5+ NM NM
802.0
799.8
797.8
786.8
ASH - gray to black, moist to wet, very loose to loose
RESIDUAL - silty clay (CL), reddish brown, moist to wet, very stiffto stiff, micaceous, trace finde to medium sand, trace organics
RESIDUAL - silt with clay and fine sand (CL-ML), reddish brown,moist, micaceous
SAPROLITE - silty very fine to fine sand (SM), reddish brown,moist, micaceous, trace clay
PWR - partially weathered rock, white to black, moist to wet,medium dense to dense
1111
1224
1122
2224
WOH234
WOH223
WOH255
271026
5121215
SS-1
SS-2
SS-3
SS-4
SS-5
SS-6
SS-7
SS-8
SS-9
8.8
11.0
13.0
24.0
0.0
GroundwaterLevel(s)
SPT
DrillingContractor
Auto
Total Depthof Borehole
Ryan Doyle
6.7' from TOC. TOC elevation: 813.96
Drill RigType
43.1 feet
SAEDACCO
CoordinateLocation
Borehole Backfill
SurfaceElevation
CheckedByDate(s)Drilled
Drill BitSize/Type 4.25" ID HSA
2/14/2023
SamplingMethod(s)
Hollow Stem Auger (HSA)
Standpipe Piezometer
Shaun Becker
HammerData
DrillingMethod
D50 Track
N 685,463.7 E 1,412,717.5
810.8 ft above msl
LoggedBy
Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer810
805
800
795
790
785
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:20 AMLog of
CLF 23-406
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
0
5
10
15
20
25
30
Sheet 1 of 2
71
58
0
Filter Sand
2.0" ID Sch 40 PVC0.010" Slotted Screen1.0 1.5 3.0 3.5
2.0 4.5+ NM NM
767.7
End of Boring at 43.1´ bgs
351324
7102049
100/1
SS-10
SS-11
SS-12 43.1Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer780
775
770
765
760
755
750
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:20 AMLog of
CLF 23-406
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
30
35
40
45
50
55
60
65
Sheet 2 of 2
100
67
54
83
83
92
100
63
63
2.0" ID Sch 40 PVC Riser
Cement/Bentonite Grout
Bentonite Seal
826.3
1.0 4.5+ 1.5 1.0
0.5 0.5 0.5 NM
0.5 0.5 NM NM
0.5 0.5 0.5 0.5
0.5 0.5 0.5 0.5
0.5 0.5 0.5 0.5
1.0 1.0 2.5 4.5
3.0 4.5 NM NM
1.5
825.3
806.5
RESIDUAL - silt (ML) with very fine to fine sand and clay, reddishbrown, dry to moist, soft to medium stiff, micaceous
SAPROLITE - silty fine to very fine sand, tan, dry to moist, loose,micaceous, trace gravel
PWR - partially weathered rock, silty fine to medium sand,laminated gray/black/white, moist, loose to medium dense, traceoxidation
6967
3344
1244
WOHWOH44
2346
4344
371011
4688
8
SS-1
SS-2
SS-3
SS-4
SS-5
SS-6
SS-7
SS-8
SS-9
1.0
19.8
0.0
GroundwaterLevel(s)
SPT
DrillingContractor
Auto
Total Depthof Borehole
Ryan Doyle
19.4' from TOC. TOC elevation: 828.87
Drill RigType
43.0 feet
SAEDACCO
CoordinateLocation
Borehole Backfill
SurfaceElevation
CheckedByDate(s)Drilled
Drill BitSize/Type 4.25" ID HSA
2/15/2023
SamplingMethod(s)
Hollow Stem Auger (HSA)
Standpipe Piezometer
Shaun Becker
HammerData
DrillingMethod
D50 Track
N 685,796.4 E 1,413,229.2
826.3 ft above msl
LoggedBy
Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer825
820
815
810
805
800
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:21 AMLog of
CLF 23-407
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
0
5
10
15
20
25
30
Sheet 1 of 2
63
92
79
0
Filter Sand
2.0" ID Sch 40 PVC0.010" Slotted Screen
3.5 3.0 NM
0.5 1.0 2.5 4.5+
2.0 4.5+ 4.5 NM
783.3 End of Boring at 43´ bgs
899
2112439
1142100/3--
100/0
SS-9
SS-10
SS-11
SS-12
43.0Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer795
790
785
780
775
770
765
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:21 AMLog of
CLF 23-407
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
30
35
40
45
50
55
60
65
Sheet 2 of 2
83
100
88
100
79
88
67
75
67
2.0" ID Sch 40 PVC Riser
Cement/Bentonite Grout
Bentonite Seal
Filter Sand
2.0" ID Sch 40 PVC0.010" Slotted Screen
808.11.0 1.5 1.5 0.5
1.0 1.0 1.5 1.0
1.5 1.5 1.5 2.75
2.5 2.0 1.5 1.0
2.0 2.0 3.0 2.5
0.5 4.5+ 1.5 2.5
3.0 3.0 2.0 NM
4.5+ 3.0 3.5 NM
1.0
807.1
802.1
789.1
RESIDUAL - silty clay (ML-CL), reddish brown, moist to wet, soft,with fine sand, micaceous
RESIDUAL - silty very fine sand, reddish brown to brown, moist,very loose to loose, micaceous, trace clay
SAPROLITE - silty very fine sand, reddish brown to brown, moist,very loose to loose, micaceous, trace clay
PWR - partially weathered rock, silty fine to medium sand,laminated gray/black/white, moist, loose to medium dense
2222
2446
561014
12131821
8132939
8121213
314150/4--
6243645
5
SS-1
SS-2
SS-3
SS-4
SS-5
SS-6
SS-7
SS-8
SS-9
1.0
6.0
19.0
0.0
GroundwaterLevel(s)
SPT
DrillingContractor
Auto
Total Depthof Borehole
Ryan Doyle
5.49' from TOC. TOC elevation: 810.81
Drill RigType
35.3 feet
SAEDACCO
CoordinateLocation
Borehole Backfill
SurfaceElevation
CheckedByDate(s)Drilled
Drill BitSize/Type 4.25" ID HSA
2/15/2023
SamplingMethod(s)
Hollow Stem Auger (HSA)
Standpipe Piezometer
Shaun Becker
HammerData
DrillingMethod
D50 Track
N 685,262.4 E 1,413,270.8
808.1 ft above msl
LoggedBy
Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer805
800
795
790
785
780
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:22 AMLog of
CLF 23-408
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
0
5
10
15
20
25
30
Sheet 1 of 2
67
63
4.5+ 4.5+ NM
1.5 2.5 3.0 NM
773.1
End of Boring at 35.3´ bgs
101637
726100/3--
SS-9
SS-10 35.0Elevation,feetMATERIAL DESCRIPTION
Graphic LogSAMPLES
NumberRecovery, %Depth,feetSampling Resist.Blows/6" ORCORE% RQDREMARKS AND
OTHER DETAILS
TypePocketPenetrometer775
770
765
760
755
750
745
Project Location: Sherrills Ford, NC
Report: GEO_WELL_2; File C:\USERS\SHAUN.BECKER\AECOM\DUKE ENERGY-MARSHALL - DOCUMENTS\GENERAL\ILF PHASE 4\400_TECHNICAL\431_DRILLING\BORING LOGS\MAR_ILF_PH4.GPJ; 3/7/2023 8:23:22 AMLog of
CLF 23-408
Project Number: 60697246
Project: Marshall Steam Station - ILF Ph 4 Expansion
30
35
40
45
50
55
60
65
Sheet 2 of 2