NC0005363_Fig 6-3 CONCEP CORR ACTION SEC_20160201

ASH BASIN (SOURCE) /COMPOSITE FINAL COVER SYSTEM
RAIL SPURS DRAINAGE DITCH
ASH DRAINAGE DITCH
ASH
COOLING POND AND
JACOB CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
-- _==� = ==� = = = ===-CONFINING LAYER = GROUNDWATER ABOVENC2LSTANDARD ==
E DEE UNIT
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 1- Source control (Closed in place) and monitored natural attenuation (MNA).
NORTHWEST
SOUTHEAST
ASH BASIN (SOURCE) COMPOSITE FINAL COVER SYSTEM
RAIL SPUR DRAINAGE DITCH
EXTRACTION TRENCH
s
1,
ASH ASH DRAINAGE DITCH
COOLING POND
ANDJACOB
CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
---------
- ____ -- = AREA OF CONCENTRATIONS IN ==_
______ ___ _--CONFINING LAYER � GROUNDWATER ABOVE NC2L STANDARD
=PEE DEE UNIT
BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 3 - Source control (Closed in place) and extraction trench.
SEE PLAN VIEW OF CORRESPONDING OPTIONS ON FIGURE 6-2 CONCEPTUAL
CORRECTIVE ACTION OPTIONS - PLAN VIEW.
NORTHWEST
SOUTHEAST
YY,a
S
a0 FORMER ASH BASIN _ Y
COOLING POND
AND JACOB CREEK
WETLANDS
SURFICIAL & YORKTOWN UNITS
i
AREA OF CONCENTRATIONS IN ==
--CONFINING LAYER = GROUNDWATER ABOVE NC2L STANDARD _—_=_
_=z—=====��=_===-================== --
:PEE DEE UNIT === —ti--== — ===_ _�_ — =-
--------- -----------------------------
�� BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
nommoso.
OPTION 2 - Source control (Ash removal), phytoremediation, and monitored natural attenuation MNA.
NORTHWEST
SOUTHEAST
ASH BASIN (SOURCE) COMPOSITE FINAL COVER SYSTEM
RAIL SPUR DRAINAGE DITCH
EXTRACTION WELL
ASH ASH DRAINAGE DITCH
I;
COOLING POND
ANDJACOB
CREEK WETLANDS
SURFICIAL & YORKTOWN UNITS
-----
---CONFINING
AREA OF CONCENTRATIONS IN ==_
CQNFINING LAYER = GROUNDWATER ABOVE NC2L STANDARD
=PEE DEE UNIT
M11111-00- BLACK CREEK REGIONAL WATER SUPPLY AQUIFER
OPTION 4 - Source control (Closed in place) and four groundwater extraction wells.
z ---- --.. _I F