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NOTES:
1. PARCEL DATA FOR THE SITE WAS OBTAINED FROM DUKE ENERGY REAL ESTATE AND IS APPROXIMATE.
2. ASH STORAGE BOUNDARY AND CINDER STORAGE BOUNDARY ARE APPROXIMATE.
3. AS -BUILT MONITORING WELL LOCATIONS PROVIDED BY DUKE ENERGY.
4. SHALLOW MONITORING WELLS (S) - WELL SCREEN INSTALLED ACROSS THE SURFICIAL WATER TABLE.
5. SHALLOW LOWER MONITORING WELLS (SL) - BOTTOM OF WELL SCREEN SET AT THE ASH -REGOLITH INTERFACE.
6. INTERMEDIATE MONITORING WELLS (1) - WELL SCREEN INSTALLEDIN REGOLITH BELOW WATER TABLE AND BELOW ASH IN ASH BASIN.
7. DEEP MONITORING WELLS (D) - WELL SCREEN INSTALLED IN THE TRANSITION ZONE BETWEEN COMPETENT BEDROCK AND THE REGOLITH.
8. BEDROCK UPPER MONITORING WELLS (BRU) - WELL SCREEN INSTALLED IN COMPETENT BEDROCK IN THE FIRST 15 FEET WHERE NO TRANSITION ZONE EXISTS.
9. BEDROCK MONITORING WELL (BR) - WELL SCREEN INSTALLED IN ROCK FRACTURE ZONE WITHIN COMPETENT BEDROCK.
10. TOPOGRAPHY DATA FOR THE SITE WAS OBTAINED FROM NC DOT GEOGRAPHIC INFORMATION SYSTEM (GIS) WEB SITE.
11. ORTHOPHOTOGRAPHY WAS OBTAINED FROM WSP (DATED APRIL 2014).
12. THE COMPLIANCE BOUNDARY IS ESTABLISHED ACCORDING TO THE DEFINITION FOUND IN 15A NCAC 02L.0107 (a).
13. SEEP SAMPLING LOCATIONS WERE OBTAINED BY HDR USING A TRIMBLE HANDHELD GPS UNIT ON APRIL 29, 2014.
14. HYDROGRAPHY WAS OBTAINED FROM USGS 7.5 -MINUTE SERIES TOPOGRAPHIC MAPS MOUNTAIN ISLAND LAKE, NC.
SCALE (FEET)
200' 0 200' 400'
/" = 400'
r1
W
•
•
DATA WELL GAPS
DUKE ENERGY CAROLINAS, LLC
RIVERBEND STEAM STATION ASH BASIN
GASTON COUNTY, NORTH CAROD NA
N
LEGEND:
DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY
ASH BASIN COMPLIANCE BOUNDARY COINCIDENT
WITH DUKE ENERGY PROPERTY BOUNDARY
ASH BASIN WASTE BOUNDARY
ASH OR CINDER STORAGE AREA BOUNDARY
STREAM
TOPOGRAPHIC CONTOUR (4 FOOT)
EXISTING ASH BASIN VOLUNTARY GROUNDWATER
MONITORING WELL
EXISTING ASH BASIN COMPLIANCE GROUNDWATER
MONITORING WELL
GROUNDWATER MONITORING WELL LOCATION
OBSERVATION WELL LOCATION
SEEP SAMPLE LOCATION
SURFACE WATER SAMPLE LOCATION
NCDENR MARCH 2014 SEEP SAMPLE LOCATIONS
PROPOSED DATA GAP WELL LOCATIONS
PUBLIC WATER SUPPLY WELL
REPORTED PRIVATE WATER SUPPLY WELL
DATE
NOVEMBER 2015
FIGURE