3620_DukeAllen_SSLF_DewateringSite Figure and Well Schematic_FID_20230605

LINED RETENTION BASIN ■ . � i
DUKE ENERGY CAROLINAS GYPSUM PAD
PROPERTY LINE4, STORAGE AREA
rr ■
r ~� + ALLEN STEAM STATION
41
DISCHARGE
CANAL COAL PILE AREA
�•: RETIRED ASH BASIN.ice RETIRED ASH BASIN
ASH LANDFILL
RETIRED ASH BASIN. •'i + BOUNDARY
WASTE BOUNDARY. I +
ACTIVE ASH BASIN
ACTIVE ASH BASIN
WASTE BOUNDARY + r
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LEGEND
4) PROPOSED EDUCTOR PIEZOMETER
Q5 PROPOSED EDUCTOR WELL
EDUCTOR PIEZOMETER
• EDUCTOR WELL
4[) PIEZOMETER
ABANDONED MONITORING WELL
r� MONITORING WELL
SOUTH STARTER LANDFILL BOUNDARY
50OFT BUFFER FROM EDUCTOR WELLS
ASH BASIN WASTE BOUNDARY
— - — RETIRED ASH BASIN WASTE BOUNDARY
RETIRED ASH BASIN ASH LANDFILL WASTE BOUNDARY
DUKE ENERGY CAROLINAS ALLEN PLANT SITE
�BOUNDARY
STREAM (AMEC NRTR 2015)
WETLAND (AMEC NRTR 2015)
NOTES:
1- ALL BOUNDARIES ARE APPROXIMATE.
2- PROPERTY BOUNDARY PROVIDED BY DUKE ENERGY CAROLINAS.
3- THE WATERS OF THE US DELINEATION HAS NOT BEEN APPROVED BY THE
US ARMY CORPS OF ENGINEERS AT THE TIME OF THE MAP CREATION. THIS
MAP IS NOT TO BE USED FOR JURISDICTIONAL DETERMINATION PURPOSES -
THE WETLANDS AND STREAMS BOUNDARIES WERE OBTAINED FROM
STREAM AND WETLAND DELINEATION CONDUCTED BY AM EC FOSTER
WHEELER ENVIRONMENTAL & INFRASTRUCTURE. INC. NATURAL RESOURCE
TECHNICAL REPORT (NRTR) FOR ALLEN STEAM STATION DATED MAY 29, 2015
4-AERIAL PHOTOGRAPHY PROVIDED DUKE ENERGY, PROPELLER
COLLECTED MAY 9, 2023
5- DRAWING HAS BEEN SET WITH A PROJECTION OF NORTH CAROLINA STATE
PLANE COORDINATE SYSTEM FIPS 3200 (NAD83)-
6- THE PROPOSED EDUCATOR WELL WEST SYSTEM IS COMPOSED OF 29
EDUCATOR WELLS, THE PROPOSED EDUCATOR WELL EAST SYSTEM IS
COMPOSED OF 32 WELLS.
N AB-21 PWA/PWS/OWAU/OWAL
AB-21 S/SL/SS/D/BR/BRL
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PROPOSED EDUCTOR
WELLS (WEST SYSTEM - 29 WELLS)
,�
CCR-23S/D
DUKE
ENERGY®
CAROLINAS
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ED-6
ED-9
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ED-11 ■ ,
• r r -
EDPZ-1
/ EDPZ-2
- EDPZ-3
EDPZ-4
c EDPZ-6
G EDPZ-5
CCR-22S/DA
SSLF-PZ-4
AB-11❑
• ��'r•r - yr •-.
;WA-1S/D/BR
�r
F-PZ-1
klCr
�.. _ NIL.
150 0
150 300
GRAPHIC SCALE IN FEET
DRAWN BY- C. HARRISON
DATE:05/19/2023
REVISED BY: C- HARRISON
DATE: 05/24/2023
CHECKED BY: C- SIU7EILL
DATE: 05/30/2023
APPROVED BY: C. SUTTELL
DATE 05/30/2023
PROJECT MANAGER-C.SUTTELL
DATE:05/30/2023
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PROPOSED EDUCTOR
WELLS (EAST SYSTEM - 32 WELLS)IF
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SSLF-PZ-3 ;
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FIGURE 1
PROPOSED WELL AND PIEZOMETER MAP
ALLEN STEAM STATION
GASTON COUNTY, NORTH CAROLINA

Return Line
JLLr'- Pressure Line
Water under hgh pressure
- Groundwater Intake
d
.d
ti -
°' >
N P d �.
U P d
..
dd
CO L
U
Single Pipe Eductor
YGRIFFIN
• 61 Twin pipe eductors will be + 30' OC installed on additionally the East and West of the pilot
test system location
• The well boreholes will be 8" diameter and + 70' deep drilled with sonic drilling methods
• Wells will be 4" sched 40 PVC screen with 40' of 0.02 slot screen and 30' of Sched 40 PVC riser
• The system will include — 1,400' of pressure and return lines, complete with hoses and valves
• The additional systems will each have two(2) new pump stations consisting of a return tank,
one(1) operating electric eductor pump, and one standby electric eductor pump along with all
associated valving and piping to connect to the eductor header lines and a flow meter installed
after the return tank, with up to +1,000 of discharge pipe (gravity flow).
• The eastern system will have a tank with a booster pump to push the water up gradient to the
predetermined discharge location + 500'