NC0003417_Fig 6-24A Conceptual Corrective Action_20160201

^. \�
WASTE BOUNDARY
` Y OPTION 1(CAP IN PLACE) % / /
/ . WITH GRASS AS COVER / 00
` \
I
/ / ACTIVE BASIN
<\ \
N j;LAF-L6ANDAREAJ
YO
COAL ASH REMAINS IN PLACESTABLISH GRASS AS COVER
Source control Option 1 (cap -in -place) and monitored natural attenuation (MNA).
0000
�� - - , PRO•/ /l000
OPTION 2 WITH TREE COVER \/ j / / �` FORMER WASTE
ESTABLISHED. BOUNDARY
FORMER ACTIVE BASIN �\
C�LA
LAND-AREA
i
COAL ASH REMOVED.
TREE COVER ESTABLISHED.
Source control Option 2 (Ash removed to a landfill) with phytoremediation, and monitored natural
attenuation MNA.
NORTH SOUTH
ASH BASIN (SOURCE)
COMPOSITE FINAL COVER SYSTEM
=OWER LINE LAY-0 F-LAND-AREA
DRAINAGE i(SOURCE)DITCH
I COMPOSITE FINAL
I ASH COVER SYSTEM
SURFICIAL AQUIFER RIVERBANK
NEUSE RIVER
BLACK CREEK CONFINING LAYER = -- - ASH
— --- ---- ----
BLACK CREEK AQUIFER
i CONFINING LAYER ` � �- +
ASH PORE WATER
AREA OF CONCENTRATIONS IN
GROUNDWATER ABOVE NC 2L STANDARD
—' CAPE FEAR AQUIFER �r
Source control Option 1 (cap -in -place) and monitored natural attenuation (MINA).
NORTH
r A
POWER LINE 4
DRAIN
DITCH
NEUSE RIVER
W__ —BLACK CREEK CONFINING LAYER= --
BLACK CREEK AQUIFER —r
a
CONFINING LAYER
AREA OF CONCENTRATIONS IN
GROUNDWATER ABOVE NC 2L STANDARD
CAPE FEAR AQUIFER
SOUTH
Source control Option 2 (Ash removed to a landfill) with phytoremediation, and monitored natural
attenuation MINA.
SEE FIGURE 6-23 FOR CORRECTIVE ACTION OPTIONS FOR THE INACTIVE ASH BASINS AND 6-24B FOR CONCEPTUAL CORRECTIVE ACTION
OPTIONS FOR THE ACTIVE ASH BASINS.