Combined PDF Roxboro EAB Closure Options Analysis Report 1-18-19

Rev 1/15/19
Roxboro Steam Electric Plant East Ash Basin (EAB) Closure Options Analysis
Summary Report
This summary report (Report) presents the Closure Options Evaluation for the Roxboro East Ash Basin
(EAB) located at Duke Energy Progress Roxboro Steam Electric Plant, located at 1700 Dunnaway Road,
Semora, Person County, North Carolina. The Closure Options Evaluation involved developing ash basin
closure strategies and evaluating these options relative to one another to determine which option to
advance to more detailed engineering and closure plan development. The strategies discussed in the
Closure Options Evaluation are representative of the range of possible approaches for basin closure, and
do not constitute final closure plans as described in N.C. Gen. Stat. sec. 130A -309.214(a)(4). Final
closure plans will be submitted in 2019, as required by law, supported by detailed engineering designs
and any necessary updates to groundwater modeling and related analysis.
Duke Energy developed programmatic guidance for the closure analysis effort in early 2016 to provide
fleet -wide consistency to ash basin closure plan development. Duke Energy developed a relative
weighting and scoring system with input from the National Ash Management Advisory Board (NAMAB).
Using this system, Duke Energy evaluated and scored the alternatives using an options analysis
framework designed to identify the solution that balances environmental protection, cost, schedule and
local community impacts. It is noted that internal working draft versions of these 2015-2016 options
analyses for Allen, Belews Creek, Cliffside, Marshall, Mayo, and Roxboro were provided to NCDEQ,at its
request, in May and June 2018.
The 2016 internal working draft options analysis identified Closure -in -Place as the preferred solution for
Roxboro East Ash Basin (EAB) that is protective of the environment, safely closes the ash basin,
minimizes the other associated risks, and was the least cost to customers. A permit -level design was
developed for that option in 2016. The company then paused that work, pending determination that the
site would meet the requirements for a low-risk impoundment classification pursuant to CAMA, as
amended by House Bill 630. Duke Energy has completed those requirements at the Roxboro EAB site for
a low-risk classification and now has updated this analysis.
SITE BACKGROUND
The Roxboro Steam Electric Plant consists of four coal-fired units with a combined generating capacity of
2,422 megawatts. The plant began operation in 1966, with capacity additions in 1973 and 1980, and is
currently in active operation. Fly ash material is currently conveyed from operating units by a
pneumatic (dry) handling system for disposal on-site or commercial reuse off-site. For on-site disposal,
the dry fly ash is conveyed to silos, transferred to trucks, and then hauled for final disposal at an on-site
permitted industrial landfill area within the EAB area. For commercial reuse, the dry fly ash is loaded on
trucks from the collection silos and then transported off-site. Bottom ash and pyrite CCR material are
currently conveyed by wet sluicing methods for operating units and deposited within the active West
Ash Basin (WAB). Flue gas desulfurization (FGD) technology has been installed to reduce sulfur dioxide
emissions for the operating units. Gypsum material produced by scrubber operations is either reused by
a nearby commercial wallboard production plant or transported to the on-site industrial landfill for
disposal. Wastewater from scrubber operations is conveyed to the FGD Pond and bioreactor treatment

REv 1/15/19
facilities, located within the WAB. Stormwater and landfill leachate discharge from the Roxboro EAB
currently flows into the WAB and then is released into the plant heated water discharge canal, which is
part of the wastewater treatment system under the NPDES permit. The discharge flow is ultimately
released into Hyco Lake through NPDES Outfall 003. The scope of EAB closure will also include the EAB
Eastern Extension Impoundment area located east of the EAB Industrial Landfill area.
The East Ash Basin has one dam that is regulated by the North Carolina Department of Environmental
Quality (NCDEQ): EAB Main Dam —State ID PERSO-033.
Figure 1 below presents the East Ash Basin and other related site features.
Figure 1. East Ash Basin and Related Site Features
CLOSURE OPTIONS
For the Roxboro East Ash Basin, under the direction of Duke Energy, Wood developed the following
conceptual closure options that remain under evaluation:
• EAB Option 1: Closure -in -Place
• EAB Option 2: Closure -by -Removal (with Off-site disposal at Mayo Landfill)
• EAB Option 3: Closure -in -Place Hybrid (Partial Removal/Off-site disposal at Mayo Landfill)
• EAB Option 4: Closure -by -Removal (On-site new Landfill)
EAB Option 1 consists of closure for the EAB with the exception of the area within the limits of the
permitted overfill landfill. For the EAB closure area, the ash deposits will be graded for proper drainage,
Summary— Page 2

REv 1/15/19
and then capped with an infiltration barrier/cap system meeting the requirements of the Federal Coal
Combustion Residuals (CCR) Rule and N.C. Coal Ash Management Act (CAMA). The scope also includes
removal and disposal of ash and impacted soil/sediment material within the EAB Eastern Extension
Impoundment and stabilization of the separator berm located on the east side of the EAB Industrial
Landfill adjacent to the EAB Eastern Extension Impoundment. This option is represented by the attached
Figure EAB 1.1, Figure REAB 0.1, and Figure REAB 213.2.
EAB Option 2 consists of closure for the EAB including the removal of the existing overfill landfill and the
deposited ash and impacted soil beneath it. For the EAB closure area, the ash and impacted soil will be
excavated, transported and placed in a permitted landfill located at the Mayo Steam Electric Plant. This
industrial landfill would be constructed with a base liner system and an infiltration barrier/cap system
meeting the requirements of the Federal CCR Rule and CAMA. The scope also includes removal and
disposal of ash and impacted soil/sediment material within the EAB Eastern Extension Impoundment,
and removal of the separator berm and the ash and impacted soil beneath it, located on the east side of
the EAB Industrial Landfill adjacent to EAB Eastern Extension Impoundment. This option is represented
by the attached Figure EAB 2.1/3.1, Figure EAB 2.2, Figure REAB 0.1, and Figure REAB 213.2.
EAB Option 3 consists of closure for the EAB with the exception of the area within the limits of the
permitted overfill landfill. For the EAB closure area, a limited area of the existing ash deposits will be
designated for Closure -by -Removal for possible use as a future expansion site for the EAB industrial
landfill. For this option, the ash and impacted soil will be excavated, transported, and placed in a
permitted landfill located at the Mayo Steam Electric Plant. This industrial landfill would be constructed
with a base liner system and an infiltration barrier/cap system meeting the requirements of the Federal
CCR Rule and CAMA. The remaining ash deposits within the unexcavated EAB closure area will be
graded for proper drainage and then capped with an infiltration barrier/cap system meeting the
requirements of the Federal CCR Rule and CAMA. The scope also includes removal and disposal of ash
and impacted soil/sediment material within the EAB Eastern Extension Impoundment, and stabilization
of the Separator Berm located on the east side of the EAB Industrial Landfill adjacent to the EAB Eastern
Extension Impoundment. This option is represented by the attached Figure EAB 2.1/3.1, Figure EAB 3.2,
Figure REAB 0.1, and Figure REAB 2B.2.
EAB Option 4 consists of closure for the EAB including the removal of the existing overfill landfill and the
deposited ash and impacted soil beneath it. For the EAB closure area, the ash and impacted soil will be
excavated, transported and placed in a permitted landfill located on-site to the south of the EAB and
immediately east of the WAB. This industrial landfill would be constructed with a base liner system and
an infiltration barrier/cap system meeting the requirements of the Federal CCR Rule and CAMA. It
would require a finger of the WAB to be excavated and backfilled first to establish the applicable base
design. The scope also includes removal and disposal of ash and impacted soil/sediment material within
the EAB Eastern Extension Impoundment, and removal of the separator berm and the ash and impacted
soil beneath it, located on the east side of the EAB Industrial Landfill adjacent to EAB Eastern Extension
Impoundment. This option is represented by the attached Figure EAB 4.1, Figure EAB 4.2, Figure REAB
0.1, and Figure REAB 213.2.
Summary— Page 3

REv 1/15/19
Tables 1, 2, and 3 of this report represent a tabulated summary of each evaluated closure option,
estimated quantities of ash and soil materials associated with each closure option, and a more detailed
overview of each closure option presented.
Attachment A of this report includes figures and reference drawings to support conceptual review and
scope development for each closure option as follows:
• Figure EAB 1.1 - EAB Closure Option 1 Concept Plan
• Figure EAB 2.1/3.1— EAB Closure Options 2 & 3 - Location for Off-site Mayo Industrial Landfill &
Haul Path
• Figure EAB 2.2 - EAB Closure Option 2 Concept Plan
• Figure EAB 3.2 - EAB Closure Option 3 Concept Plan
• Figure EAB 4.1— EAB Closure Option 4 Concept Plan
• Figure EAB 4.2 — Proposed Landfill Area C
• Figure REAB 0.1—Existing Conditions Plan for EAB Eastern Extension Impoundment
• Figure REAB 213.2 —Schematic Section for Closure -by -Removal of EAB Eastern Extension
Impoundment)
Attachment B includes rough order of magnitude (ROM) cost estimates for each closure option.
Attachment C contains the scoring matrix which summarizes the composite scores of the various closure
options, the assumptions of which are outlined in Table 3 for each particular option.
METHODOLOGY
A scoring matrix was prepared to provide consistent evaluation of closure options for each of the
various site locations. This scoring evaluation tool can be found in Attachment C and considers the
following primary criteria:
• Environmental Protection and Impacts
• Cost
• Schedule
• Regional Factors
• Constructability
Rough Order of Magnitude Costs
Rough order of magnitude (ROM) Class 5 cost estimates were prepared for each of the closure options,
based on information and quantities developed during the conceptual design activities. The estimated
costs include construction, permitting, engineering design, post -construction O&M, and groundwater
monitoring. A tabulated summary of the preliminary closure cost estimates for the options considered
is provided the following table:
Summary — Page 4

REv 1/15/19
Summary of Current ROM Cost Estimates
As indicated by the cost estimate summary, EAB Option 1- Closure -in -Place has the lowest total
estimated cost, which is primarily attributed to the additional cost for dewatering, excavation, hauling,
and landfill development associated with other options considered. Option 4 reflects the lower
estimated costs associated with on-site disposal compared to transportation off-site as estimated in
Option 2. Detailed tabulated ROM cost estimates are included in Attachment B. Options 1 and 3 don't
include the final cover of the landfill because that final cover closure requirement is part of the landfill
permit. This is the reason why those cost estimates are so much less .
Schedule
Within the scoring evaluation, estimates of the length of time required to initiate closure activities and
the anticipated construction duration are provided for each option.
The construction durations were estimated based on an assumed material excavation/movement of 1
million cubic yards/year; therefore, Options 2 and 4 - Closure -By -Removal have longer construction
durations, as they require the movement of all ash materials, compared to the Hybrid and Closure -In -
Place options.
Option 1 is estimated to take 52 months or 4.4 years. Option 2 is estimated to take 202 months or 16.9
years. Option 3 is estimated to take 58 months, or 4.8 years. Option 4 is estimated to take 202 months,
or 16.9 years.
Options 2 and 4 as estimated would extend beyond the current CAMA deadline of 2029 but are included
for transparency of the full excavation scenarios.
Evaluation Criteria
This options analysis was developed as a decision-making tool in selection of closure options when
multiple methods are allowed under applicable regulations. The intent was to develop a decision
framework that used weighting factors to balance environmental factors, cost, and the safety of workers
and the public. The options analysis incorporates Duke Energy's obligation as a public utility to ensure
Summary— Page 5
Estimated
Total
Post -Closure
Closure Option
Option Description
Estimated
Maintenance
Cost
Cost (30
Years)
EAB Option 1
Closure -in -Place
$26,867,192
$6,569,262
EAB Option 2
Closure -by -Removal (to Mayo Landfill)
$757,555,868
$10,250,134
EAB Option 3
Closure -in -Place Hybrid (Partial Removal to
$50,308,911
$7,820,550
Mayo Landfill)
EAB Option 4
Closure -by -Removal (On-site new Landfill)
$503,782,503
$10,250,134
As indicated by the cost estimate summary, EAB Option 1- Closure -in -Place has the lowest total
estimated cost, which is primarily attributed to the additional cost for dewatering, excavation, hauling,
and landfill development associated with other options considered. Option 4 reflects the lower
estimated costs associated with on-site disposal compared to transportation off-site as estimated in
Option 2. Detailed tabulated ROM cost estimates are included in Attachment B. Options 1 and 3 don't
include the final cover of the landfill because that final cover closure requirement is part of the landfill
permit. This is the reason why those cost estimates are so much less .
Schedule
Within the scoring evaluation, estimates of the length of time required to initiate closure activities and
the anticipated construction duration are provided for each option.
The construction durations were estimated based on an assumed material excavation/movement of 1
million cubic yards/year; therefore, Options 2 and 4 - Closure -By -Removal have longer construction
durations, as they require the movement of all ash materials, compared to the Hybrid and Closure -In -
Place options.
Option 1 is estimated to take 52 months or 4.4 years. Option 2 is estimated to take 202 months or 16.9
years. Option 3 is estimated to take 58 months, or 4.8 years. Option 4 is estimated to take 202 months,
or 16.9 years.
Options 2 and 4 as estimated would extend beyond the current CAMA deadline of 2029 but are included
for transparency of the full excavation scenarios.
Evaluation Criteria
This options analysis was developed as a decision-making tool in selection of closure options when
multiple methods are allowed under applicable regulations. The intent was to develop a decision
framework that used weighting factors to balance environmental factors, cost, and the safety of workers
and the public. The options analysis incorporates Duke Energy's obligation as a public utility to ensure
Summary— Page 5

REv 1/15/19
that its closure decisions are protective of the environment and communities, while also being prudent
from a cost-effectiveness perspective.
The analysis considered multiple aspects in each criterion, including surface water impacts, groundwater
impacts, air emissions, greenfield disturbance, construction duration, imported soil needs,
transportation and noise impacts, stormwater management, long-term maintenance needs and post -
closure monitoring.
The company then combined these elements to provide a weighted sum for each criterion using the
following weights: environmental considerations (30%), cost (35%), schedule (15%), regional/community
factors (15%) and constructability (5%.). Duke Energy placed primary emphasis on environmental factors
and cost, which were approximately equal in weight. When considering all of the criteria and associated
weightings, the environmental considerations have a slightly higher weight than cost with the inclusion
of certain regional/community factors (transportation impact, noise impact, view impact) which are
effectively environmental considerations.
The scoring matrix provided in Attachment C, scores each option on a scale of 0 (least favorable) to 10
(most favorable) for each of the specified criteria. The scores for each option are then summed based
on specified criterion weighting, resulting in an overall weighted score for each option. The results of
the scoring evaluation for the Roxboro EAB closure options are summarized in the following table:
Summary of Closure Options Evaluation Scoring
Criterion
Option
1
2
3
4
Environmental Protection and Impacts
1.74
1.83
1.94
1.9
Cost
3.50
0.00
3.19
1.0
Schedule
1.50
0.0
1.05
0.0
Regional Factors
1.41
0.04
1.31
1.0
Constructability
0.50
0.00
0.25
0.00
Total Score
8.65
1.87
7.74
3.9
DISCUSSION
The options analysis finds relatively similar rankings for environmental protection and impacts which
considers impacts to groundwater, surface water, air emissions based on miles driven, and avoidance of
greenfield disturbance. The analysis incorporates the latest groundwater modeling of the Roxboro EAB
that demonstrates groundwater near the basin responds similarly for several decades in all closure
options evaluated. The current modeling does not incorporate capping or removal of other potential
Summary— Page 6

REv 1/15/19
sources, subject to different legal requirements. If these additional areas were included, the closure
would take longer, cost more, and potentially disturb more habitat.
In terms of duration of work and closure time, the Closure -In -Place scenario is expected to be completed
in 4.4 years, compared to the Closure -By -Removal options 2 and 4 which are expected to take 16.9
years.
Other aspects considered include regional impacts to the community related to imported soil needs,
transportation and noise. For the off-site landfill option, the Mayo landfill is located 15 miles from the
Roxboro site off a public two-lane highway, which would present a degree of safety risk and road
congestion issues in an excavation scenario as shown in Option 2.
The Closure -By -Removal options are many multiples of the estimated cost of the Closure -In -Place option
and cause other unnecessary community impacts with little compelling environmental benefit. While
long-term modeling indicates a quicker reduction in the boron plume within the immediate vicinity of
the basin footprint for the Closure -By -Removal scenarios, compared to the Closure -in -Place and Hybrid
scenarios, the modeled concentration points evaluated over time at downstream locations are nearly
identical for all the closure options. Moreover, the quicker reduction is partially offset by the fact that
the modeled improvement is delayed in the Closure -By -Removal scenarios, compared to the Closure -in -
Place scenario, due to the extended construction time. In any event, the minor change in modeled
plume size, within the immediate vicinity of the basin footprint, is not enough to justify the cost of the
Closure -by -Removal scenarios, particularly when the impact and improvement do not materially affect
neighbors or other potential receptors.
The Hybrid Closure option ranks closely with Closure -In -Place but also does not appear to produce
environmental benefits commensurate with the added cost. In addition, the Hybrid Closure option
presents concerns for construction feasibility associated with partial removal of ash and slope
stabilization.
CONCLUSION
Based on the conceptual designs for the selected closure options and evaluation of the criteria
established (environmental protection/impacts, cost, schedule, regional factors and constructability),
Closure -In -Place option (#1) or the Hybrid option (#3) were identified as the preferred options that best
balance the various considerations associated with basin closure.
ATTACHMENTS
• Table 1— Closure Option Summary (Identification of Options)
• Table 2 — Estimated Quantity Summary
• Table 3 — Closure Options Detail Descriptions
• Attachment A — Figures and Reference Drawings
• Attachment B - Rough Order of Magnitude (ROM) Cost Estimates
• Attachment C — Closure Options Evaluation Scoring Matrix
Summary— Page 7

REv 1/15/19
Table 1(EAB) — Closure Option Summary (Identification of Options)
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option
Description
EAB Option 1 consists of closure for the EAB with the exception of the area
within the limits of the permitted overfill landfill. For the EAB closure area, the
ash deposits will be graded for proper drainage, and then capped with an
infiltration barrier/cap system meeting the requirements of the Federal Coal
Combustion Residuals (CCR) Rule and N.C. Coal Ash Management Act
(CAMA). The scope also includes removal and disposal of ash and impacted
soil/sediment material within the EAB Eastern Extension Impoundment, and
stabilization of the Separator Berm located on the east side of the EAB
Industrial Landfill adjacent to the EAB Eastern Extension Impoundment.
EAB Option 2 consists of excavating ash material and a 1 -ft thick soil layer
within the limits for the EAB area including the limits of the permitted landfill
area, both ash material in the landfill phases and the pond ash below the
landfill. For the EAB closure area, the ash and impacted soil will be
excavated, transported and placed in a permitted landfill located at the Mayo
Steam Electric Plant. This industrial landfill would be constructed with a base
liner system and an infiltration barrier/cap system meeting the requirements of
the Federal CCR Rule and CAMA. The scope also includes removal and
disposal of ash and impacted soil/sediment material within the EAB Eastern
Extension Impoundment, and removal of the Separator Berm and the
underlying ash and impacted soil located on the east side of the EAB
Industrial Landfill adjacent to the EAB Eastern Extension Impoundment.
EAB Option 3 consists of closure for the EAB with the exception of the area
within the limits of the permitted overfill landfill. For the EAB closure area, a
limited area of the existing ash deposits will be designated for Closure -by -
Removal, which would support possible use of the area as a future expansion
site for the EAB Industrial Landfill. For this option, the ash and impacted soil
will be excavated, transported, and placed in a permitted landfill located at the
Mayo Steam Electric Plant. This industrial landfill would be constructed with a
base liner system and an infiltration barrier/cap system meeting the
requirements of the Federal CCR Rule and CAMA. The remaining ash
deposits within the unexcavated EAB closure area will be graded for proper
drainage, and then capped with an infiltration barrier/cap system meeting the
requirements of the Federal CCR Rule and CAMA. The scope also includes
removal of ash and impacted soil/sediment material within the EAB Eastern
Extension Impoundment and placing it in the EAB, and stabilization of the
Separator Berm located on the east side of the EAB Industrial Landfill
adjacent to the EAB Eastern Extension Impoundment.
EAB Option 4 consists of excavating ash material and a 1 -ft thick soil layer
within the limits for the EAB area including the limits of the permitted landfill
area, both ash material in the landfill phases and the pond ash below the
landfill. For the EAB closure area, the ash and impacted soil will be
excavated, transported and placed in a permitted landfill located south of the
EAB (Landfill Area C). This industrial landfill would be constructed with a base
liner system and an infiltration barrier/cap system meeting the requirements of
the Federal CCR Rule and CAMA. The scope also includes removal and
disposal of ash and impacted soil/sediment material within the EAB Eastern
Extension Impoundment, and removal of the Separator Berm and the
underlying ash and impacted soil located on the east side of the EAB
Industrial Landfill adjacent to the EAB Eastern Extension Impoundment. A
portion of the ash and soil (444,191 CY) from the EAB excavation will be
Page 1 of 2

REv 1/15/19
Table 1(EAB) — Closure Option Summary (Identification of Options)
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option
Description
placed into proposed Landfill Area A. Construction and closure costs for
Landfill Area A are accounted for within the West Ash Basin Closure Option 1.
Page 2of2

Existing Ash (Excluding Existing Permitted Landfill — Options 1 and 3)
Ash Basin Area (regulatory boundary)
Ash Basin Area — Eastern Extension Impoundment
(regulatory boundary)
In Place Ash Volume — ::: •
Ash Basin Area
In Place Ash Volume — •
Eastern Extension Im oundment •
Ash Basin Dam Soil Volume
Existing Ash (Including Existing Permitted Landfill — Options 2 and 4
Ash Basin Area (reciulatory boundary) '
In Place Ash Volume
Ash Volume in Final Closure Footprint -
Ash Basin Area
Ash Volume in Final Closure Footprint -
Eastern Extension Impoundment
Ash Excavation Volume (Excavated Area) -
For off-site disposal
Ash Excavation Volume (Excavated Area) -
Eastern Extension Impoundment
For on-site disposal
Over Excavation Volume (1 ft.) —
For off-site disposal
Ash Regrading —
Ash Basin Area (Negative value indicates soil fill
required)
Dam Soil Cut Volume
Soil Needed (Backfill Excavated Area and 18" Cover
Soil)
Offsite Topsoil Needed (6" for Final
Ash Volume in Final Closure Footprint -
Ash Basin Area
Ash Volume in Final Closure Footprint -
Eastern Extension Impoundment
Ash Excavation Volume (Excavated Area) -

Ash Basin Area
For off-site disposal
Ash Excavation Volume (Excavated Area) -
Eastern Extension Impoundment
For off-site disposal
Over Excavation Volume (1 ft.) —
For off-site disposal
Ash Regrading
Dam Soil Cut Volume
Soil Needed (Backfill Excavated Area and 18" Cover
Soil)
Offsite Topsoil Needed (6" for Final Cover)
Estimated Off-site Landfill Area (Footprint)
Off-site Landfill Soil (assume 2' for liner and 18" for
Off-site Landfill Topsoil (assume 6" for
Ash Volume in Final Closure Footprint -
Ash Basin Area
Ash Volume in Final Closure Footprint -
Eastern Extension Impoundment
Ash Excavation Volume (Excavated Area) -
Ash Basin Area
For off-site disposal
Ash Excavation Volume (Excavated Area) -
Eastern Extension Impoundment
For on-site disposal
Over Excavation Volume (1 ft.) —
For off-site disposal
Ash Reqradinq
Dam Soil Cut Volume
Soil Needed (Backfill Excavated Area and 18" Cover
Soil)
Offsite Topsoil Needed (6" for Final
Estimated Off-site Landfill Area (Footprint)
Off-site Landfill Soil Fill (assume 2' for liner and 18" for
Off-site Landfill Topsoil (assume 6" for cover
Ash Excavation Volume (Excavated Area)
Ash Excavation Volume (Excavated Area) -
Eastern Extension Impoundment
Over Excavation Volume (1 ft.)
Proposed On-site Landfill Area

REv 1/15/19
Volume
Units
M
16,748,104
CY
98.3
444,191
NA
517,154
CY
213.7
172,385
CY
213.7
555,067
98.3
79,295
98.3
*Volumes will be determined as part of the final design if the respective option is selected as the closure
option.
3

Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option Description
Pr '9
L A
REv 1/15/19
This option consists of closure for the EAB with the exception of the area
within the limits of the permitted overfill landfill. For EAB closure, the ash
deposits will be consolidated and graded for proper drainage. The EAB
closure area will then be closed with an engineered cover system. Internal
drainage features for the EAB closure area will be stabilized for the expected
design storm flow conditions. A new discharge outlet will be constructed by
breaching the EAB Main Dam. Flow will be released into the existing
concrete lined discharge channel and then into the Heated Water Discharge
Canal, which is part of the wastewater treatment system under the NPDES
permit. The flow is then discharged to Hyco Lake through NPDES Outfall 003.
EAB Industrial Landfill Separator Berm Modification — This modification will be
provided to stabilize the toe of the landfill in the vicinity of the existing
Separator Berm as required for closure of the EAB Eastern Extension
Impoundment. For this option, the standing water will initially be removed
from the ponded area and ash -impacted sediment material will be excavated
within the limits of the proposed stabilization embankment. Ash and ash
impacted sediment will be excavated at a minimum slope of 5H:1V. It is
assumed the stabilization embankment will be constructed on the existing
residual soil foundation. Further geotechnical review is required to confirm
foundation requirements. Soil will be placed and compacted to form the
stabilization embankment which will be partially placed over remaining ash
material. It is assumed the exterior slope will be 2.5H:1V and that riprap be
placed over the exterior slope for erosion protection. The proposed crest
level for the berm will be at Elevation 472', and the crest width will be 15'
minimum. The fill material for the stabilization embankment will be graded to
drain in the direction of the outlet channel. An engineered cover system will
be placed over the fill area consistent with cover provided for ash basin
closure.
EAB Eastern Extension Impoundment Closure — For this option, the EAB
Eastern Extension Impoundment will be closed with a Closure -by -Removal
approach. Removal of ash and impacted soil/sediment material will be
performed by dredging methods. The waste material will be deposited by
sluicing within the limits of the EAB and will subsequently be incorporated into
the subgrade fill for the EAB closure plan. Excavated settlement pits or
containment berms will be provided within the EAB for collection of the sluiced
waste material.
Figures and reference drawings representing this option are as follows:
Figure EAB 1.1 - EAB Closure Option 1 Concept Plan
Figure REAB 0.1 — Existing Conditions Plan for EAB Eastern
Extension Impoundment
Figure REAB 2B.2 — Schematic Section for Closure -by -Removal of
EAB Eastern Extension Impoundment
Environmental Protection and Impacts Considerations
Page 1 of 6

Option
REv 1/15/19
Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Description
• Estimated quantities used for cost estimating for this option are
summarized in Table 2. This table also includes estimates for
expected miles driven for on-site and off-site hauling operations and
disturbed acres of greenfield to be used for the options evaluation.
Cost Considerations
For this option, the total estimated construction cost is $26,867,192, and the
estimate post -closure O&M cost (30 years) $6,569,262.
Schedule Considerations
For this option, the total estimated closure construction duration is 4.4 years,
and the time to start ash removal is 2.1 years.
Regional Factors
• For this option, the cover system could limit potential reuse of the site.
• The requirements for imported soil are included in Table 2.
• There are currently no plans for beneficial reuse of ash material after
closure.
• Estimated miles driven for closure is included in Table 2.
• Noise impact was the lowest for the options considered.
• View impact was the lowest for the options considered.
Constructability
• In place closure has highest overall score for constructability.
Closure -by -removal Option 2 will be accomplished by removal of the ash
along with a 1 -ft thick soil layer within the limits of the EAB. This closure
option also assumes ash will also be removed from within the limits of the
existing lined and unlined landfills located on the EAB along with the ash
material underlying those facilities. The estimated volume of ash moved for
closure is 16,832,522 cy, and the estimated volume of impacted soil moved is
359,773 cy. For this option, the ash and impacted sediment will be removed
and transported to the permitted and lined landfill located at the Mayo Steam
Electric Plant. The EAB Main Dam will be breached for discharge of
stormwater outflow after completion of closure. Flow will be released into the
existing concrete lined discharge channel and then into the Heated Water
Discharge Canal, which is part of the wastewater treatment system under the
NPDES permit. The flow is then discharged to Hyco Lake through NPDES
Outfall 003.
Included is the EAB Eastern Extension Impoundment Closure. The EAB
Eastern Extension Impoundment will be closed with a Closure -by -Removal
approach. Removal of ash and impacted soil/sediment material will be
performed by dredging methods. The waste material will be deposited by
sluicing within the limits of the EAB and excavated settlement pits or
containment berms will be provided within the EAB for collection of the sluiced
Page 2of6

Option
REv 1/15/19
Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Description
waste material. These materials will be excavated and transported to the
permitted and lined landfill located at the Mayo Steam Electric Plant.
The stabilization berm that separates the EAB Industrial landfill from the EAB
Eastern Extension Impoundment will be removed and the underlying ash and
impacted soil will be excavated and transported to the permitted and lined
landfill located at the Mayo Steam Electric Plant.
Figures and reference drawings representing this option are as follows:
• Figure EAB 2.1/3.1 — EAB Closure Options 2 & 3 - Location for Off-
site Mayo Industrial Landfill & Haul Path
• Figure EAB 2.2 — EAB Closure Option 2 Concept Plan
Environmental Protection and Impacts Considerations
• Estimated quantities used in cost estimating for this option are
summarized in Table 2. This table also includes estimates for
expected miles driven for on-site and off-site hauling operations and
disturbed acres of greenfield to be used for the options evaluation.
Cost Considerations
For this option, the total estimated construction cost is $757,555,868, and the
estimate post -closure O&M cost (30 years) $10,250,130.
Schedule Considerations
For this option, the total estimated closure construction duration is 14.9 years,
and the time to start ash removal is 2.5 years.
Regional Factors
• Closure -by -Removal option is considered to have greatest potential
for reuse of site in evaluation.
• The requirements for imported soil are included in Table 2.
• There are currently no plans for beneficial reuse of ash material after
closure.
• Estimated miles driven for closure is included in Table 2.
• Noise impact considered highest for removal
• View impact considered highest for removal.
Constructability
• There are significant concerns for constructability and feasibility for
Closure -by -Removal. Further review of stabilization requirements for
adjacent landfill is needed to confirm feasibility.
This option consists of partial removal of the ash deposits and closure in
place for the remaining ash deposits. For this option, a limited area of the
existing ash deposits will be designated for closure by removal which will
Page 3of6

Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option Description
r -i
L A
REv 1/15/19
provide a potential future expansion site for the EAB industrial landfill. It is
anticipated that the excavated area would later receive soil fill as part of the
landfill expansion development. The evaluation of this option does not
include consideration of requirements for stabilization of the remaining ash
deposits and the EAB industrial landfill area. For this option, the ash and
impacted soil will be removed and transported to a permitted and lined landfill
located at the Mayo Steam Electric Plant. The remaining EAB closure area
will then be closed in place with an engineered cover system. Internal
drainage features for the EAB closure area will be stabilized for the expected
design flow conditions. A new discharge outlet will be constructed by
breaching the EAB Main Dam. Flow will be released into the existing
concrete lined discharge channel and then into the Heated Water Discharge
Canal, which is part of the wastewater treatment system under the NPDES
permit. The flow is then discharged to Hyco Lake through NPDES Outfall 003.
EAB Industrial Landfill Separator Berm Modification — This modification will be
provided to stabilize the toe of the landfill in the vicinity of the existing
Separator Berm as required for closure of the EAB Eastern Extension
Impoundment. For this option, the standing water will initially be removed
from the ponded area and ash -impacted sediment material will be excavated
within the limits of the proposed stabilization embankment. Ash and ash
impacted sediment will be excavated at a minimum slope of 5H:1V. It is
assumed the stabilization embankment will be constructed on the existing
residual soil foundation. Further geotechnical review is required to confirm
foundation requirements. Soil will be placed and compacted to form the
stabilization embankment which will be partially placed over remaining ash
material. It is assumed the exterior slope will be 2.5H:1V and that riprap be
placed over the exterior slope for erosion protection. The proposed crest
level for the berm will be at Elevation 472', and the crest width will be 15'
minimum. The fill material for the stabilization embankment will be graded to
drain in the direction of the outlet channel. An engineered cover system will
be placed over the fill area consistent with cover provided for ash basin
closure.
EAB Eastern Extension Impoundment Closure — For this option, the EAB
Eastern Extension Impoundment will be closed with a Closure -by -Removal
approach. Removal of ash and impacted soil/sediment material will be
performed by dredging methods. The waste material will be deposited by
sluicing within the limits of the EAB and will subsequently be incorporated into
the subgrade fill for the EAB closure plan. Excavated settlement pits or
containment berms will be provided within the EAB for collection of the sluiced
waste material.
Figures and reference drawings representing this option are as follows:
• Figure EAB 2.1/3.1 — EAB Closure Options 2 & 3 - Location for Off-
site Mayo Industrial Landfill & Haul Path
• Figure EAB 3.2 - EAB Option 3 Concept Plan
• Figure REAB 0.1 and REAB 213.2 (same as EAB Option 1)
Environmental Protection and Impacts Considerations
Page 4of6

REv 1/15/19
Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option
Description
• Estimated quantities used in cost estimating for this option are
summarized in Table 2. This table also includes estimates for
expected miles driven for on-site and off-site hauling operations and
disturbed acres of greenfield to be used for the options evaluation.
Cost Considerations
For this option, the total estimated construction cost is $50,308,911, and the
estimate post -closure O&M cost (30 years) $7,820,550.
Schedule Considerations
For this option, the total estimated closure construction duration is 4.8 years,
and the time to start ash removal is 2.5 years.
Regional Factors
• For Option 3, the excavated portion of site could be reused for
development of landfill area.
• The requirements for imported soil are included in Table 2.
• There are currently no plans for beneficial reuse of ash material after
closure.
• Estimated miles driven for closure is included in Table 2.
• Noise impact is higher than Close -in -Place but less the Closure -by -
Removal which has the highest impact.
• View impact is higher than Close -in -Place but less the Closure -by -
Removal which has the highest impact.
Constructability
• There are significant concerns for constructability and feasibility for this
hybrid option. Further review of stabilization requirements for adjacent
landfill is needed to confirm feasibility.
Closure -by -removal Option 4 will be accomplished by removal of the ash along
with a 1 -ft thick soil layer within the limits of the EAB. This closure option also
assumes ash will also be removed from within the limits of the existing lined
and unlined landfills located on the EAB along with the ash material underlying
those facilities. The estimated volume of ash moved for closure is 16,832,522
cy, and the estimated volume of impacted soil moved is 359,773 cy. This
closure option assumes 16,748,104 cy of ash and soil will be permanently
placed in the proposed Landfill Area C. The East Ash Basin Main Dam will be
breached to allow stormwater flow to discharge into Hyco Lake.
Included is the EAB Eastern Extension Impoundment Closure. The EAB
Eastern Extension Impoundment will be closed with a Closure -by -Removal
approach. Removal of ash and impacted soil/sediment material will be
performed by dredging methods. The waste material will be deposited by
sluicing within the limits of the EAB and excavated settlement pits or
containment berms will be provided within the EAB for collection of the sluiced
Page 5of6

REv 1/15/19
Table 3(EAB) — Closure Option Detail Descriptions
Roxboro Steam Electric Plan - East Ash Basin (EAB)
Option
Description
waste material. These materials will be excavated and placed in the new
permitted and lined on-site landfill.
The stabilization berm that separates the EAB Industrial landfill from the EAB
Eastern Extension Impoundment will be removed and the underlying ash and
impacted soil will be excavated and placed in the new permitted and lined on-
site landfill.
Figures and reference drawings representing this option are as follows:
Figure EAB 4.1 — Closure -by -Removal
Figure EAB 4.2 — Proposed Landfill Area C
Environmental Protection and Impacts Considerations
Estimated quantities used for cost estimates are summarized in Table
2.
Cost Considerations
The total estimated construction cost is $503,782,503, and the estimated post -
closure O&M cost (30 years) is $10,250,130.
Schedule Considerations
For this option, the total estimated closure construction duration is 14.9 years,
and the time to start ash removal is 2.5 years.
Regional Factors
• Ash basin closure area could be reused without consideration of cover
system after completion of closure by removal.
• The requirements for imported soil are included in Table 2.
• There are currently no plans for beneficial reuse of ash after closure.
• Noise impact considered more significant than Closure -in -Place due to
hauling and truck traffic but less significant than removal to an off-site
facility due to the reduced haul distance.
• View impact for the site considered more significant than Closure -in -
Place and removal to off-site facility due to 200+ feet height of proposed
on-site landfill facility created on-site.
Constructability
• Requires development of new landfill space to accommodate ash
removal. A portion of this space requires the excavation and backfill
soil replacement of a finger of the WAB.
• Closure -by -removal has additional challenges due to longer duration
and larger amount of excavation and transport for removal of ash.
Page 6of6

ATTACHMENTS
Attachment A - Figures and Reference Drawings

I i i i i i i
2 3 4 5 6 7 8 EAB 2�2 REv 1/15/19
--1 r��\\ _ / / /_--= == _=��/ Z i_ �/j////I SIL ���� \\\\\1' �� r� J��/\ S i �~ ���\ ) \\\ 1\ 1�\\1� / / =�/�_ = = = <i— 1
/ _ �� I ii /r _ -- \ �_ _ / \ t\ t r / / 4--f —_=_ /-_ /\ _ -_ - (� / �i i/ii / r / `-�\\\\Ir������_ /�\ ( -- - <c 1 rl - ;- I �I // // / - - __- /1-_ -- ��- --_- �/ -____ - f �/ I ��/��_ i ? �_-t \ j l Ilf \ �\IIII // _ -_ / �`/- /°//%� -- _ _ � l I l /%// 7 /%/ > l/ \�\\\\I�- r �/� f�7?S 2 - - �� � �� I \ i c / /�l l / \\ \\ 1/ / / // /- - - // \
// /// �/ //� / / //i /� o — )\\\���/ //r� ✓ / ���� I �/ �� � / //�f (��\�
�A\VA A �(\\I� �I q''
/ / / // //I � —_ -
) I / / �// / //e Ate= (� I / , �(� / ///, -% !%ii / A �� i/ v ' - � i /� 0 0 0 . - v v\ \ - / �� � 1 -- / // / / A\ \ \ 1 U// - v- - j �� / /� /ii/i\ \ \� \\ v1 / / // / / / /
\ __�_ _ -= __-fir /�� 3Ho / l �/ / �e)`��((� --y�-� 11 __'-_-- vv v �S �o �� I 1 tiS(// \ Ult�� 1\���\��I���II� I / /�i /// / /I//
_- — / / / f 7� // / / S � v� _ % _ _ - vwvv� �� �' V 1 �I l 1\ I \ �A (t I / , I
�_=� —__�__ 3H0 I // 7� �// ) (=Z� r� / / �_ — --- — — AVA�_/�_iil/� 1\\\�\\ //� I���V��\�����>�L� I I I l/�i / _� A/ 11 11
�_ f__-_— 1 Il // �i = \ a r / - -- _ ---__ - vvv v� ;��� _/ J / v \ \\\V��� 11 I �I Il1
_ _�� = __ / l/ �i/= - / - - -- -- - A vv_ iii _�_� V A\tib /-�v v 1\\ \ ��
_ - A � =� - �/� - = — - / // / / /���% v / �10_ - - v v v _ _ \ vv �/ /_ ` v \\\ \\\\\\ \��t �� I I � I
�� �I� -_ v v\v_ - A \1 \ \ \ \ II
=�\` o ��==_�� ( E /iii S ��i��iii�iC S \ \ %/ \\ \ \� / f� �J r )i)�\ \\\\\\ 1`\�\\ \\\\\ \\ r \ l l //.// ,I
/ — i� i i ii — ii iii — / — — �� — — _ — \ \\ —�i — ��� \ �— — A�\\\V�� \ \\\ �" VAS \ \ � / �I
\ \—i— r _ _ \\�� �/ VA 1 \\\ \\ \ \ \ VA I
��i�ii�i�/ii�ii� — / ��� \ 0 / / / _ _ v \\��_� —� �� VA\ \\\ \ \\ V ) )I
(\\ \ OHE // 1 IIII ��i�i=��i ��i� i��� i / ( — _ — — — A_ \ \ \ \ \
11 /// v\ \ I/ II III - - _ _ _ \ 1_ /�\_ ��v v� \��v \v \ � / IIII l
/ II
IIIIL //// �- \ r1 IIII %i��%�%% %��, , / \ \%�� / ,\ I - 1== J/� --��� \\ \ 1 \� ���\ �\ III I I
l - /% - �� 1 1 /ice _ \ i v ( \Q\ ��\\ \\ \\ , \ \\ \ I I I
I / L ��/ice i ii�ii/iii i \ i / / / /� — = r — \ _ / (\\\ ��\\�\ 1 �� a \\ \\ I l
III II jl�/ - ��� /' �\ �\� \IIIIII %���%% �% ✓ / /r�/� --- / ;`�-tel \��\ >\\ �\ ���__ J/I
II / III 1 i \ III ���------ � / a / / / _ I � _ %r ~ \ \ \\\ \ \ \ _ j l
\\\�\ i1 ) \ \ \ \\�-_
I `I- / / - - I \ - r - \\\�\\\�l lull \ \� \�� - _ I(I�l V
III �111� ��� 1\\ 1 �� - -
\ )\\ Lam- /i /—iii i�� �� ��i i — / l — \ 1 \ \ — \ l I
II II \ \\1 \ i / i ii ii i i i / // / j I I I \ �� a IIII J i \ \ J 111
IIII \ll \ (1�=�=����%�% rJ/////// /� I _ -- -_ _ 1 1
\ \ / \ \ �1) J /�� ��/� > // // % / - - _ - _ -- - \�\ \ ) I l/ --/� \ \�11;, IIIIII\ - - I I I I r �l II
s /�� - ��� �� - - �/ / ' // - - - = l \ ) \ /I \� \1 jIIII IIIIIIp6f=' - _= J I I I ^ \ I Bill
I ll�l \ ) �\ 1 \ \ 1 /_' - / /�//// / / //� _ _ - _ __ - _ _ _ I / l \ > J ,IIII I ,1�1111� � _ _ - _ / / J/ 1) / I
/ /// / i _ - \ / I II
II/ � _ 1 / I�\- _`-� j����/��� / / //// // �/ / /�� -_ - _ f ^ 1 { � ( / / / �IIlIt� \ //� / //// ( _ JII
I - - s / / �/ / / / // / �� / / - 1//I
II II -) / / // /// // /// /// // - v c �/ / JII _ - / - T�x
// / j /
�' 111 l I I /i y�_ - %�'��j� % �� / / s /� /�/� / / / /� _ - - _ / _ V I / - ���1�'��i' �II ° / - �l / / �- //� / l 1 /// /i /i/ ; / // l) II v / / vvA
/ / 1 / // / / / / - \ /�� _ - / 11 1C ��> > I / ��<
=�11� / \ _ \ I \ / i 7�� �� / / / / / / / - - _ _ _ - _ - / \ 1 l - - /i �// /%////(\ \�� / I J I// / � - �--- _
/ IIII �V l I \��///ll -�\\ -' /i / I '� // // // �J/ / 1 r// _ _, -� \ 0 11 --/i-= ��-� j��/ / %lIl �����1/llll/ / / - //// -��_-- -ll/II
/ I�IIII ��I / -, /�/%\/ �� ��/� �� / / I / / // // ) / -- I Il I / /i//%-�-_ /// l� s /Jl / / _�// ��
/ / / / // (( r I I I ) 1 / -/ I
I - �I 1 � \/�� �///���' �%, �' � �� - - �/'/ � I � ° f/ll / � �/ / / �/////� f ��� ( I I I f _/� � r� " = i l / � - / -�� - - _� � ,
11111 � � �� - L � i� //i/i / / � _ J 1
II\ l� / /ii / / / / / / / / I II I J �// // �- �/ / /// / / //_�/ / /
- 111111 / \ \ ,/% _ > / - J \ / � 1 / l / // 11 / / ri / / / / �� A I I II ' J f I 1 f f / �— %�� ,__\ ll� i/// / / / ' / \
I ILII, 1 v '/ ///// - -- / - / / / / // / / ,/ / / // \ I l I I / ) I
_ v A 1 IIIA �\ -'/ ///
/✓/ / // / �� / //////� / / / / / /// l/ / / // /// / / / / / / //
I l l \ `\ / l // 1 1 / / / \�\\
- /i / // // / l / / / / I I I I I I I I I l/ \� / / / / 11 /moi /i, / / / / -
\ \ �III� \ ////�` / �` / / /i / / / l _ /� / / / / / �/ I I I I \� / / / /i �l/////f ����j1(( (� / //// // / / // / �\
Illp /�/� /J o ///r// ///// // l l//l/ 111 l / / I I I I I \\ // =/i //�/ii�� _� \ lC �j / w / r /��_
\ \ \ \ 1 / /� /' -- I /iir / / / / l l 11 l/ I 1 1 I I I /// / f/ _
/ I I I \\ // // //i /� / r � \/ % / / / / \\_ ��� -
a v v I �� v v //i/// // / / //� r� /�//ii; // //� /i// / /� /l /l / I I II I II v� / //����// / //� �i�/i /r/ '/ //j //// / / a9 // //�I /% ���� h\ /__
v o I II I� \ 1 /%� / !� / /� �/ - / / /ii / / /� / / // // / / / l I I I I I ) 1 v /// /� �i/� A I (sj �/ �// / / �/ �(� / / / / /�'/ /� 1 l I // V // '��� _y��
I I I II / 1 I II \\ �ii�i /! /i/_// //// //� / / /l/ v / / ) lI / � vv
��� / ��/i�i ///�yi/ / �ii �l�//�// II I I I v / /i/ / // / / / �, , /
/ �i. / / --� CEJ(//� ill Ill �� \\\\
\ _ \ \m / 11� _/ ' \ /i // / / /i / / /// // 1 1 / / /i / / / ((/ I / 11 \
\ ( \ �1i/ / i/� / / / /�/ / I I I /// r /� / / Jl � 11 \- 11--
\ b l � \\ / " l , / / - // /i / / / �/� / / / /i / / / /i/ / / �/ / // IIII I I III I I I I \ \� /i /i /�i� / // / / / / / \ \ \
/ / / – /� – / – / / / / / / ! I v /i Vii/ /i/,� / / / CLO URE BY REM VA / /� l� / I / �I / / �\\\\\\\
1 / - - / / ///� / //i �// / / /// /_ /� / / / o o I III III 1 I I I I ( //i \/ ; �/r��6� /////� / / �/ I I l - - / / �/� / Ill/ I 1 \ / ////�/
I /��(- //(- / / - �/ ///� I ��� //_/ /%// //////� / / / l A _� ✓// /// I I 1 \ \ \v/ // //�/ \\\
v / // / / /� ��� / �// /� i/ / /i/ i / / /// / /j /// / / r �� l II I // / / // /i I III 1 / / vA \ \ \ \
V I /�(\ I / a / // /�/i/ /// /i�/ /// /j/�/� /! = 1 I 11 I l �1/i/i f5 r//_/�/l /l� l �� v — �-_ /////// 1 1I11� vv ///_/////_VA�� B
I l //)A / / /%/ i //i/ /i/ /i/ /� ///// j// I I I I I I IIII // f� ;��lyll l/ 11 I �l \ - / �/ /// Vl \ v� / n\ v\
I 1 I \\� � v I II= v v _ �/ v� / /���� 7 / ///ii /// /i/=i/ //�/ /� / 1� I I I I I I /�// �� rl l Il I I � - -� /�✓�/�//� \VV�\\\\ /i////ll�/� \VAv
/ — I \ \ 7/ — — ii ��ii / / // / / / / // /� / / // I — -- l —
(- [/J////� I I // / /j // // //// / / �/ / r �� - I( / - � � � / / /i / //�/i/// � � � I II III II I �� � �/ / I I I �� � �- �'��/\���l// ; / / l/l 11 1 \ - -_ / / \ \ // . \\\�� / / / < / // // // / / / � //, 1 I I ���\ � -- ��-, �-, -moo ���/// \
// r //III I ( vA _ / \
1 / I / I ) A v I �/ /iii o ��, / / //ii //=i�i/ /i// I I / I I o I I �� yA� _ ��/ v - wv vv L //////�\VA\� \�wv % /�l//� VAAv��
- C / / // / / / / / 0 _� - A - /h. AA
- _� 1 �- J A- / i -
V II / / / /�//� — i— / / / / / //// �/ r I\�`VA� ///�� \ 1��—ci 1A\\ VA�__� �/ l l �A \\V A\ �, ��l/�v�\
1 v / I / / // / - / / // / //// c I I �I I\\ /�// \�-_- 1
I_�� �_ / �_� 11 e-_ / I I \\\ v--%�__/ -
/ /� / �' - - / / / / /i/ / s I I I II I /�� III\\�_\- _ �/ /l l� I v v� i - I \
\ \ � 1 / .,/// — i � —ice � �� / � / < / / / // // /// � � II I �� _ -� -- � \�— —�/ ,/ 1 \ �/// /L — i
1v\ / - / �/ / /// _��� ,� - IIII \ / /1 II �\ - I _ /
/ �� / O �/ — — /�/ — / / //� / /// / / / I --- �� ��_ \ \� % ii_///� ---
\ I � // � � / - - / - �J- � - - - // / � / /i / / .o � o I I II I 1 I I I III � - ///��\_ � � � � � -
/ \ _— / _ —i — i — /ice /// / // / // / �/ / / o I I I�� Z / \�_—
/\ // / / _� / /i �i / / //i/ I I I I I I I 1 _ ��_ - I � -w- ✓/ II 1= \\ \ � / /%�
\ l / „� � / � / / / �// / � _// �" � 1 I I I1 I � I I I I I 1�„ � v � - _� I -- IIII \ � _ ,� II I � vvv � // - �
- 11 I I \ /l I
I / L - J I // / - - - -i / // /�/ % /// // / // I I I I _ I ) _ _
of /i / - / I I I I I �I I I I l// -f/�� \� -/ / �"'; ///
/// o r / / /i ,/ �� I I I ' I I \\� ll \ \� ���� /w //�////'//
1 I — / ��
/ — / — _ _ A :_�— / —// /�
(� p % i i /7 - - - _ _ - 1 I I I 11 I I I \v\_ o _ � III \ 1v _ _- )��/////�j / /
/, ) / / // / ) I I I I _ - �// //_/ / / /
/ c / - I I // /j y /__� --- - � - / �I / 1 I 11 I \ � : _ _ 11111 �� - / (///Ill/l//=�////
v= ( \ ( I 1 / = - - _ < I I I1 I I rim/�// Il l 1 � v
II -i / 1 1) /- --v �// // /
- - �`� '- - - ' - - �� I \ I I I 1 _ //i 1
��_�� 1 IAV_ =; =/�= j� �� v _-- -_� _ - - ,, --_ -_ �I II II o I III III _ - �)�/ l��V�V( ��\V� v--- -
I
I -
�11) I \ I' - - / r \ - I - / - I I II I I \ll 1\ - '\\ �� -
�' /1y \\ /` �� / \ �r 1 / - - > /// - - - I I I 1 III \ I 1 1 / —_� o \\\�\ �� =%��ll
��� i/ / I / / v s / r - - - - - n I �_ ___- ___A� �� vA j l
���/ / V1V A ) / i v V� /I \ �� a - r --- - - --_ - -- _� 1 I I iii -- = ��_ I r V- --- /I(
- - I I . 1 I I I IIII v\vvv
�� /j l \ 1� //ice \ \ </ /-- - - l� - _ _ = I I \ ����____ ������\ \��\\✓/1����
/ �\ V \ V _ - 1 l - - 1 -- ---
ll/ I , \ - 1 /%/-% vI
\ � v
III / % / ) VAA\ / - I / ` - - _ /i 1111 v I I I I // r - A� v Vy _ _ _ / v �
) I / 11\ / n > - \ I / / — v v' - _ _
/ / / / / / o �� I / / / -- - -%_
l I 1 / / I \� / v o _ ) 1 / I - l I / / v -: vv`) v VA \l(�� I / - - / �� \
II � l \� � ' ///;� �' �� l � = I//ll \ i) �,I�� \ \ III /I(I�/ll/// / =v1 � V ), ��� �� - �==-�\I'== --
d ICl ¢ i/\ V� ii' ll �� 11 I I I I _ 1 1 1 1I I I' 11�- -�-_��, 1_�_=
/// l I ;/ 1 1 1 /i =
/ /� v I I I 1 I I II - I I /i I III �I - --__ __��� /= __
�, �� �JI�I III// _ % II�_
1 �1�\\ 1 --_-_-/� b t� c / � _� IIII 1 � /� /I I III // ��__ _—�A 0/// I 1 -� I I I \I\ / I) / -,- / 1 III / / ( r� _ % - A� VA 1 A jl�
- I I I I I // / i/ 111 I I I I I I I - _ v\\ II I i /_ _vvvvv
1 1 I \ \ A 1 A \ \ / v — _ �� w \A /�"_ i, v / Vv
� � � I I / 1 I \ \ VA V A 1 / � �/% /!��� %�% ,IIII II l >,_ � _ _��v VI I� v
II �-\ v \ / �� _- -1) (\\1 A � z=, o N I I A \\A VA\�\\ lljll/ __-may AII III(( _ __-v v \Vw\
� I I V 1\ V \\ ( // _ vv / II ) l 11 _ A\ \ // /// �wy
l/ A\ _ // v v� I 1 _ v I I I v _ - - - v \ V /-
/ - / /� - I A \ \ vvv I II 111 /-- _v��
V /� I AV 1)l / I \v \v Zv -- v\SII I I �/- ',��II1111 VAI\IVAII 1111 /l / / / �wv�A 11� Il 111 ///�/// "/ / -�
v I v�/� ' ��\v \ I(�\1)\ //�� v I II 1 I V \ \ \\ \\ I I. 1 1 / =��� 11 III\ 11 I / z - -
- _ \_ \ III // /
v \ / � � �� I I v I \ v J ( \ _� v \\V 1 V ''� I\�`-y I\,A1 ,A \V� I ( ''`' I VA\ 11 1/ \- �\
o = 1\\ I / \ \\\1 IIII�I IIIIII\ 1 / /
\ / / \ I ll l\ \>/ 1 ���= /i ���- I I I /// /J/ �\ \- � \\ /� _\�� / IIII 1 ��
s -�I \ / • / _ \ '1 I 111 \ \ \ IIII I1 11 �I /I ///
/ / 1 / \ \ \\\\ l o III �_�,� _ ��\ \ / // I 1 II I / _ // ,i/j \\\� \ \ i� \\�\�\\ IIII \ \ \ /1 11 1 \\ �II III/ /
CT —1 I I \ _ �� I / 1 l VA ' = _ -_ , \ v / / I 1 I A/ / v \��//� �\� \ \ \�
\ \ 11 \ II 1111 \ \ \ \\1 I( III/
v / 1 v \ )1 � / I' I 1 / // / / _ - ,vv \ � \ \ 11 111 \ V I IIII I I �A 1 I I I
- �� I v / _ / v I /1 \ 1 I /// vvv>avv A J ///// I l�� I I I 1 ///////// / /;___ v�/ivy VAV \ IIIIII \\1\ v v 111 /<<(��vVA II I
/ 1 / I - - _ A /-� // / V 1111 - v l_====ii = _w� �� _ V 1 / 11 111 I I %/ / �� / / r/ v v \\V�Il�(III�111�111 1\1� �v vA Ilv v II II I /
I I I v - v\ - / � -_ v _ A I I I I I� l N
11 I I v v - / �� ,yam / \\V��==-/�=i/ I I / /111/f/// / /- ---�v v�`�� V�\VA\\V��/ \Vv1\\\v���,�� \\ vv �� A vvI II
I \ \ 1J / -�/ir / \ _ //-�/f / �// I s /// I I // / , - - - \ \ `--\ \ \ \\ \ \\ \ (I� IIII I I
1 I � - \ (/ / - --// - \ % • - l r�/- ' / I l I I 1 I II I�/ / / � - - - 1 I \ \\ \\\�_\\\\\'\\\\\\ II I I I N
v/ -%tel/ /l \AV�� d=� ��� III I I I )) �// / / ---��I
/ I - --1\ I / // - % I f / / �v \ I I LEGEND m
\ I I v \ \ /_ s- 1 // I - A //i-/i/=jar I I I I I II �I / / / �--
I 1116 / _ \\ II / /� � v \ I �/ _ 1 1 III IIII 111V�(ll ' �� v 11 ! L Q
_ - vv \ / _ ��_ 11) I I 11\ \v��� / :1-w / l//i/���/�// / v I I - - I I 1 1 1 / / \\\ \\ 111 IIII
I — A 1 \ V I) / VA v\V l �( ///_ /// _ _ - - l I I / A\ 111 I / / / - \ 1 IIII (C . - - - APPROXIMATE LIMITS OF CCR BOUNDARY W
\\ v 1 - A - �I) ( \ \\vim �i - wv �// //�/� / / I I vv \ \ / III (I l �«� 1 d
/_, /%w\II //� / A �/ /i _ - I I yll \ /�' 1 1 I / > \)1) I I I
\ _ vv ) �) / \ \ / / -� _ -1 - / lI / �\ �- — �i \ Vv\ \\\ / / / -
\ _ /i I \ / / �/ II // 1 v _'/ �/j =i=/ //// / / v / v r° I 1 I vv\ I III I III / / / / \ I 1 II 11 1111/111 \\
- / A v / --- � I III 111- (//// / vvv / _ v V \ �// / - I 1 I - I I 1 / // / 1 I I 1 \ V 11 \
- _ _ �J / / \ /� --��� 1111\�///� / A� __ AA \ \ \\\ /' ��� / (�/ /// / / / / v v ( 1 I I 1\ (I ) 1 I / / / / �//,//IIIIII 111A \\VA APPROXIMATE LIMITS OF EASTERN
/� / \ V /,� -- = 11 \� /// '�� _- \ 1 ,/� l // // / i _ - _ r I 1 l\ �� I ( I I // I ) 1111 1
o / / / /� _ V A\ 111 111 / \ /� / l l l l l / - ��� \ / / /l l EXTENSION IMPOUNDMENT
/ v /� I I /l -- v \ // / / -- v 1 v�� /i / , _ v //l / l \ � / l l _ v / I I I �� - f / / (I 1 II
�� r / / \ \ / / \\\\�I// / /� _ \ I 1 \ / / I l l - - _ 1 \ / //�/� III I l
_`- y� / ii A \ \ If / r -�\� / A )Ill ll�)�J VIII/�(I / f I I /- A\ � I / ll//%

'AY
• /.
�( ` � • � .� � � • � •• • -A . •y � � .. \'� �, ' � 'rte , <�► p i` (�`C`
•//+ fid ' Y � • / *r
� � ,� • f � � .,z ' r' •� >•�
. • _ �� f. r VIRGINIA > ,-
�ti r NORTH CAROLI A
• � � 'k ♦� • .� • • r",� I 1 j may,..-� ,,, 1 -
• * /
• • r. �'.� 1'...fs i `.- ! � !i � -i Y% , • / - � f� , �A •� � r ,, r; h., y/�/ (..l �. �. ' 9 i I' � - .L'. .:� '�
• ./ • ♦. ti .` �� � .- +',r - • . , ' � ,� � ¢
*446 �
A _ / --
• r-' - N.,,., Lake _' _ �•' f �• _ _.- . .- � ..1� �
now '40
160 3F7
41i A,
414
44
it , i S •.,� ,� \ _ it,
i, -T I
. ; • t,, Mayo
at
y-.
IL
so
woo
MAW
Aw
XW� '�_ _ ifi� � .- ._•l. _ . •. ray- .� '. I , � _' � •
' ! � • t • - • n; • '�� - � _ ... � '" ,^ Imo. �" � -o • . •►e .• .; ` -
Fishing Q►`� 1 ��
r � � M;rn I aka � 4• - ' �� • i.ir••"moi, i�j.y 'L '' - ,�, y • � • _''�'� ��i' - x.
F fwro.�.. All
r, 17 a til • n `fv 4' Y .. r t t t r f _
'* ! �-
-, _ . .
01
. � Y w '�+ ` fir• ii �` ,. ti �.• a� . µ r"
wood.
4.L
io Environment & Infrastructure Solutions
*L 4021 STIRRUP CREEK DRIVE, SUITE 100 DURHAM
Jr
t \v t� • A •APA
• • • ,�' . - _ r Roxboro • ! [y
Aft ntry
40
wo HIEREo (ao — m o ono — — o o 09 " ON NSP �
�` • �, . .� ,,.1 Aa@MBq demo @M ft cpm M@P cmmhkj
•,f

F
2 3 4 5 6 7 6 EAB 2.2 REV. B
r�-\\ / // - Z V//� N s _�-. o \\\ � _ - 1 i \ \\t\ 1\ 1 \\\ \ S ( / / - �i _- -- < 1
/ // �/ y� I l /�/' % O� // / / �/ \ \ \\I / �� = i \ X \ - 500 �� C� / ~ C / / J �( \ \ \ \\ \\\�\ 1 / / / / - - _ /
�� / �� /// N �/ //( ) / / //- o /� o //�� A �,V �,, i r
/ \_ �/ �r // �// �o ��o %/vv Qeo� ��i�� �� O -- s---_ vvv / // J/i/ A \ 1���V�\ / // O a A
i _ /�/ \ \\( / / �i / l l
�/ - -� - �// / /// = �( I/ %\\ l//\ \/iA/i / l= = //i �o �v ooy V // -/y° 0 0 �� �Av�- ��1 f / /� A\ \ \\ 1 U/ // l/l�
/� /ri// / ICI l l > j�- -- �s��� -_ �(-�> \ z�� -\- �� oo�� \\ \�\� S°�o \�/ ~�- II(//f/� //i�/ �111\\l1 \\\\�\1, II /( / ` � ///
\ ___ _ /r 3H0 / \ � r ,�/// �i / 09- r \ ° �_� -� ��� \\\� ��ro I Ill) \5< « IU \ O� �I(t�� I I / / �i/ ,/ / � ///
_� - i 3H0 // 1 ) �' //� // / \ � / �� -� _ =;10 = \O \ \\\de°° o / /� �l� \\�\\\ �O�l I I // \ � 11 I
j I /j / v r�✓ / =5 -w� A \V\ / // / \\ i I Q\ / A/ I
.-_ _-_-� 1 Il 1/l/� A�<<\\S\ a���0 \ / O --__ — — --5zo=_-_y��� v vvv �\ ��� �� v\ //-�v \ \\V�� I I�I 11
( \ vv \ J l\\\\\ / vV\ \ \ \ 1 ( / 1
_�_ =�� _ // /� / -- /� -///�- vv \,\ `�:� 1�'� v� �j-;�� =_�- = _ -_ _�: -- vv vvv\�-__ ��� -' _��A�\ vvv\1v�/�=���wv �l\VA \�\� �\�l>�\ \VI I / ��l
�\�`==_ = �� / E //��0� /////% /� E _'\ a /� \ �� > \ \� - �i % , �/ \ \\\ \ 1\ \ \ \ 1 \ ( \ 11 I
-o /F -- // // �� ///// s ,*°�\7 ° 7 \\ v > \1 %/\ \ \ .-�►� ��\ \\\\\\\\ / J r �\\��\\ \ \\O \L\\\ \\ \ / //I I
l / i//i // /i//% / / 1 / \\\\ \ r J� ` � > �"'� �z �� - \\\\ \ \ \\� �i \ ' �-�- \ J�� \\ \ \\\� \\\ \\ \\ \ \ \ \ \\ \ \\ / \ — 11 II /
//�� - -� I / /i�i/ / ��/ii/� / / / \ \ S \ % ( \ �% % f _ _ =530_ \ �\ \\\ \\\ \\ \\\\� i//, \ \\\ �J ��%\\ \ \ \\ \ \\ \ \ \\ \ I I I \
\\ \ %/ conN� /i/��//��/iii/- ice/ ii / \\\\ �\ 1 //� 9////�� = � \��rr --540= _ _ \\�\ \��_ /� _ \�I\ --v ( �_ \\\\\\��\\ \�\\� \ \\
v`� ///ii / /� /i / / =-- > \ _ �\ \\ \ \\\\/i\ / lI v- /� ���\\ \ \ \ ��\ \\�\\\ \\\ \1 IIIII I
III Jlh /-- \ \ \ II 11 //i//\/ // ol 1 Q \\ 1 /O/ �/i _ -_= \\ \\\ \\\\�/i /- \ I -- -�� ��\�\��\\\\ \ \ \\�
IIIIII /�/ // �� � \ Ili //�%'%� %�'' %'' \ , ( ' A7,io \ ° \ -l� �� /�i/�i%= _ _ _ �\�\(I i r = �\` \` \�\_\- �/� � ! �O 1 - �(r/ �\\����\\ �, \ \\\\ �\�\�\- �- (�- �I 1)I/Ij Vl
IIIIII/ �III/II �� o.� �� \ II1`II 1 /j��'//////// \� l \ / o�\\ �l // / / j =_ _ 55 ) \\�\ \\\\\� \\� %��\ I \ \I = - /� �� \��\\\\�1 ) \ \\\\���- _ I // /
III III \ iF�-\ \ \ )\\ L /� %\%//� \ \\ ////�/ / /// /ice _ - % _� , I i \�� \\\ \'\ x / I I \II '- r �/ - \�\\1111 1\\1\ \\ \\ \�
I I OI I \ Ic 1 �� �/ /// \ �\\�` \ 1 / r/ // / /r I_� - _ _ _ _ �' \ \ I �' 1 ��� �y �1�1 r �\ �\ \�� \� Ili I
I L\I \ �JJ �\ \� \ I \t�ii ��i/� i\�/// / / / ///� \\ \\ /)//// / //// / - �- - \ \\ \ I I IoI /= - \ ���\� I''1 11� / )\\ \ / >J\ \ l I H
II /� \ \j �-/�// ��/�/ \\\\ f �> \\� \��'1�1 " /�// //�/�% / /i'�i= _ _ ���s�� T�\\\\\\r\ \ \� \ 1 ��-� \ \IIIIIII II\ \; )pl o
�\ /\// \ /i _ - ----- \ \ \� ��� \ \111 I Ihllr I I ll
v \ / -A \ v N-1 // / / A -- i �/ A / / lr � / --�__= �- _--__ -I \ Vv\\\ �R \ I I / 111l I 1--:- III I I IIII
I \ /� v v -\� - /%/%/ Ate\ � � / //i // -�_�_ - = ro = - _v( AVA\ \ �A\ v \ I �I/ / - v\ � l � )IIIII�I�I IIII �( L = \ I I
I� li I \ l / /-/ - ��� / / �i O/i/r / /�/ = __ __- __-__\l \\\\\\\\\\\ �\ / \ > J / III I lIllll _ _ _ _ / I \ I
I 11�1 \ `—�� %/y/ // _� s �r// ��/// ,//y/// ��— — vv v vy v� v I / III,>"I II�IIII�� _ " ,/ �_ II,
I / ,� I v �, ///- / / � / ri O / ` / /i , �_ - - �_ 5g0 - _ - = _- __ y f Ow v \ >` n I l / / 1 ---" / �� Iljl l Illldl� / - - I /l
III/�IIII��-� �� �� 5� v- /i-- __�� / �� �I / \/ri0/, i ,�/,,y\;/�� -- = _ _ _ _ y��v1w v v v \\� v ( t , ( /,//marls II II�II�� _ / , /,y / v -_
I I ��/^/�/ilia / / / / / i/ / s / / c- - \ \ I I Jam/ -/ %) JII \� / - / // L/% C�
I I ( � \\� I // /// 1 \/ \// F- �90- \ \ \\ \\ \ II`---� 1/ /
I l \ \/// / / / / / I f / \////�j % �� \1( ///�i/// - �o _ = _ � / \\\ �► \\\\ \\ \\\ \\ 1 1 I � J / _ //-�� ( / / W J/ / / \\\ - -
/ I I \ \ I o \ 7 //// /t \ / ( / / / I G I \� �\ � �i \ / \ // )), ,, \ / / /j r / - _� 590 = _ -_ __ _ - =� \ \ / \ 1\\\\\\\\ \\ \\ \�\ \ O \ I1) I l /�I _ - - �� �/ /////� �//1(� �� %III )// / /� \��
\ / \ I / \ / ///' / / /� _ - \ I / = f / /// / ll% L - I l / ll / - // \ �� = _ - �/1 II
l/1 I // ll // / )1 /\ /�/� /�jll/ )\\�\\I1�(I /// #_ _ - )�\ I I \l1\\ \ I \\�\ `\ r 1 /� = - �/ / /�l �0�� / l/ / / _ , _ _ - I
/ 1 // \ �,,o/' J� // I / \ /� l51 /\I �// // /// // / ) \� -soo \ _ 1 I - III III \ 11 I 11 \\ / /� /i/= - _ ��� //� /l/(l �( s1 O �>l ( l / - -" �- I
/ \'lll�,�, , \ i _�� eio ' /�// I / 4l!l )l / % // //�//%�// )�\\\\ (/�(%�---- _ -/� r�1�1- I I IIII I /Il�/1)) - ( t� /1//ice /�i/% �)y "//-- � i(l // - /
11�1 CIO \//�\ /ill rt, / // L/ ( //\ fl� /��//�/�// \�>//�j////�j \1\ // I / -- , G� r (III-Illlllllll I IIIII(/�NI / / o \S r�� if \oi//\ //'�Oi/ // / J� / \/ 1
I �1111 �/ \ \ / /�_��/ ) ( /� Ill l/ l / / /// / �\ /// l a 1 1 �II I� / O/ //-��%�ir��/ /�/%/ ///i� �/ /// // / // / / I
v / - // I \, > ll /� /l 111 / / ,� t I I _ I I I T II IjI I I // l / / � - //
\�i / l l✓ //// ////// / /// ip �r l �1 II 1I I III I// I I - l // S I� /�/ �1� / / // / / /
I 'N11 -1 v //////-// /i/ / \ 5 A ///�/�/ /� / l/ l /l/ /�/ ///j/ �/ \ \ - j l I I II l I III /I I ( (` Ir I 1 ((� /� ( (�/ / / / / /o / / - V A,) ¢
v \ / / / / / // //l l � I I� IIII I I II I I 1/ ���� ���-,- - ///�, l( / // / // ////
V Ill \ /�// / / / �,, / \ ////// / �� �// / //// ///� ///�////,/ // \�� `)Ill I I II I� II 11�1 / 1 / J )� II) �� iii ////i\� (/�/ '�'� / / / / ss
v 1 III �/ -"-v //I � /i/i // /// / �� �/ / /l/ l/� �� / / // /////// Avv
I 111 l \ ♦ l I I I I I 1 / II IIII I 1 / / A -v / // / I) / /�� i� \I I (/\ // //// y/ / / / /\� � � \vvv, -
v �I I� A /// I / �/ /�/ / / / / / /ll 111 l ///////���/ I I 1I 1I III II I 1 /// \� vv, -
\IIIII ,X / / / — / ASSUMED DISCHARGE OUTLET LOCATION o /\/ri V/��////�/l 11//Ol�ll 11 / / / // I I I �I I III IIII I I I I� O %// //%l/ i/'y /ii\/
\ I II / ///r r// o rf� -y� (\(/ W / / / �A ���_ -
\\ v 1 /N /, / - � i //�i\i \ l/\ �/\ /�j/ ///� ///�///// \ (\/ IIIII II\�I�IIIIII�IIII I I I/IIIII �A\��/i//r//i OriA� /riir��i' ���)( //// / r// / / ��� v����
a v I I III v v /i i/ // / /ii 1 i /i/� / / / / / / /// // l / l l �j 1 1 I I III I I I I I I III , / /� \, / // /A, _,��� ( \ 4 "q9 / / /j/ �`�' j� / v_ �� v = -
vv 11 �IA� 1/i/ i/ /i / / // i / / \/� //// / /// /� l/l ll�/l ( I II I l I I �/ �/ \ ///l // / v �� I A _
O l \\ / % � //�� /////�i� /, ', '? \ /\/�/ /// �/ / / l 11 A � IIII III IIIIlIIIII II lIllll II IIII I IIIII \\ �� - /�y///� \��� �A�, i� �/ l\�, / l O ,////y, I I� /_�
/ / / I l // \ \ ,/�� _�-_
v _ v vm / 1v��I 1 y �% I / ' ` // // �� % �� r///%/� // / / yr / y/ // / ll /fir/ /i� JII III I I I I� I I�I III I (/ 1 (III II v\ //s'ii / / //r� SEPARATOR BERM AND / / / --) / / v v
i / /i / / ///\// / / l \ I I III I � I / / �i I �� (/ / / // I I � l -_z vv v v
v v ( \- / / // /� //� /i/i / �/Ate/ / \y\ / / / //ll ///� / l ! � ) \ I II I IIIIIII I II I I I I I I I I II IIII �yI�6 III I III \ v - /i �i //i/ �� \� Ij (/ / l�l l v / 11/ / - -v A
\o b / ��////y�/ //// �� -� /� / / / / //i/-� / , //// ////%//�///V�// //// A I to I I \vi�O //� //��� _ / / // Il / I /// I \ ///�/�� A\\�\
/ / /���/////\/ /// //�/ // r /�ii/\/ / °° v 1 II�111�II11 III II IIII I�I I I1� (�( �/ /i / /ir( �/ SOIL FILL BUTTRESS r/ /// r- I / / \
�� / � V )/( // I (� / / - �i `/r/ /// / //� / �, / y y/\ /V//j/�/// ��� �) r i' IIII II I I� II�/IIII II If I'jl ��lll I(l ��O- /I / i _ ��✓/�/�%i/� IIIIIII/ I \ \� ///i /�/�VA�AA\��
// / / I III 1, / �/l f / LOCATION y /i // I I vIv v v / / v B
\ / I �I \ - - j/ / 1 I I / /f /-��o ( // // / ( )> \ ( �, P' I;. I III I I I I l / r/ IS (//� l - �/ / / / / 1 l 11 v / / / V \
v /i / ) // / //�� / / / /i Oil /i > /���/Oi� / / 1 v �� I I o 11111 )1 I l yi / / ( II I 1y / // 1 // /ll \ \\
\ / I I v -� i -.'� //////� /i /�/� // ii i, /�/i� / �/ l / II I I `�i. I I �1 / / / 1 v / / /\\
/ /� / // �i ///i0 /// \ice 1� I i�l I I I II I I I 1 II /// f� s / l/ l � �� _ --//�//� �\ \ \ v v / \ // v vv -
1 \ // l v //// 7 / / //i �i/ / /Vi// / Ny \ I v I l �� / l l l I v� ✓� /// /\V AVV�\\ 1 // ////� A\ v�
/ /// / / //ii / / / //� / / I I I I IIII / // ll Ill \ - - /ii�////j///V A V A =��i/ �/ rv\ v�\-
CLOSUREBYREMOVAL— y / %/ �/ / ,// /// // /,//�Ai/�/ �? I I� II IIII 1'pl�. I IIIII IIl�l1�l y/ Ili ll I --__ _y — // r vv vv��/ rl/l v\ _
/ /� ) 1 \ v I (�i �// /// y////i // /\i / / / /� /� / V I I I I I I �I I I I I / I I � _ _ , � /i
I I) v v y\ / / // > // / // /// I // / /r ° I III I I l � p l I I IIII s / I I I � vv - % - �� ' //�/ �/ A\V A vv �// // �/w v
// //� <� �// I III /l �/ I I vvv _ --ii y y / // \ yy //////)Vvy
l / I I l ) A ) � ) - /)/ / o /A /��/�//� / / �// /ii//�� //��i/// / 1 I I I I� �� I� / � IIIII II I-r' II� �' > o I I � \w�� - _ -; _�/ v � \ v_ �� / �\ V \�A � / � / / \ vy
/ ♦ / - / �/ ) \ I I I I 1 � �� /-- / V A \ \
/ I ( \ I / /l i//� - %/// /�'%y//// ��I yam/ /NXA/� //�/i/�///X' °ro �r � I� II I11 III IIII'v II IIII�11 III IIIIIII II I ( \,,v_ — yi v ��-
1 \ /I I // / �/I �� //� / ,0�i / / �/ / // /ij/// //////\/ °s I I o �.��y�y — �� ����1A\\ VA=/��/l/�//II�A�VA\VAVA� //��//���\�A�
/ / / ��- _ %// // //// /// c, ���/ �i/i/////�,�,�/oo / �c I �� �I-1II11111 I vIII IIII IIII ��Ir�INlll III IIIIIII -�_ -� ��\�1\\� _ ��/ w,� /\lh���
- / 47 - - / / //A/i / // / / / / , / 6 s s v �n \,----� _ ��- \�
\ 1, � I / / / % �/ 15 /ii� /i // /i//// ////� 0"/5� o o t I IIII III I� I IIII III I III 1 =A \// �� I \_-=a=�//✓ �// ti /
1v \ // //o��// / ��� - // /\ �, /� /// //� /C,� ���i� y / /.° ( �,�� III II III IIIII 11 IIIII II Ill l I �lolllllll --vim,- /��_y III v�- �i EAB EASTERN =� //
i - - iAi o h/// / o I I III I I I. I ��- _ ��III I I A - I/
/ -- / �i/� - /i //ice //i //// /i/i/// O//h /i / /� ��_ eo 0 1 / I I I I II ) o �I � � ��� 1 /vim_ � — - 1 i — ,-,- -- ////
I A� I /�// j% v - // / / i //, I I I I I �n o — / i /
\ / /�, �����° /\/ A--c /yam y/�/ /�//l-i�ii/�/��<<\�,��� v I I° IIII II I�/IIIII I I I I Illl Il�lo 1 �����- �- II II�v�; -/�� IIII
_ II I� II I I l - _ J /� - I III \ y +�� EXTENSION //i y�� /�iiii�
I �, , , _ // / "yam /// /�io-/// /\ice/�, _ �_ I ,III„ I III I ,I I , II I I I I I�11 � 1 11 \vim �r " , l/��,
I L — /j!, \/ `) / /z/Xzi/-'4i` i i '%///oi�, b' �///%/= - I� /l
/ /// /�5 / / i _�,��� �_� I V III I III I I �I lIllll I (1 I III II III V I(/ I))I� - \�- _ -e� � - /,� /y���ii//�i
I I l/� I o r / l� / /// /i/ / / /- �- / y�/// �� / i-- - - - -�� _ I I I v I I I II I I I I II I III < -/ / IMPOUNDMENT " /z/11 o /F- ,// /
/� I I I II - \\ � , // /
' / I �� / /� // //� // \- /--___-\ \= _- I I II I I I II\I I I I \-� /�a�//�//
n / �/i / -/ / // /�-- - � =V� \ 1 I I III �I 111 111 I1 I I I� IIIII I \\_- o -\ / /iN � //
I I I III II I I\ I I I 1 \
/ // / / //-,53/- / / _ _ I I I I I \1 I I
��� // / // _ �1 • 1 III IIIIIII I III, \ I I I III II I I , I�V\�� I I�A-__- >�//O/V/,�/
/
- �. l I I ///, r //// ///� _ _ ' y� / \ I I 1 I I I t I I I IIII I 1 11 I I I II IIII CLOSURE BY REMOVAL \� - ; � - � _ III ) /- v (/// ////\, / //
/ ,� / -- _ III I II Illllr I I 1 I 1 I IIII Ill � I \ -� �-�� -� / )) / // /
° ' "' / _� � - --♦_-- .� I / I I I /III IIII I I \ I �v �/�
- - _ _ � - N ( / 1 1 � �- _ I I 1 I I 1 //l / /// Ill/ /
- I oll�/��ti // �L-------\ L �\ I I IIII 11\ II IIII /jv / I
\ ( \ \� )\I -I \' \� �� / -- _ -==__ _,-���5 / IJ��<<\_ _ --_ = \ - I III\\11 I I III II I I� 1 I \ //r// / /ice///lIllll(O\
-o _ -- � N_ .� \' \\ \ �\ - _ I ; _ _< _ \ _ \ _ / I I IIIIIII I I 1 -� / / / /I ( \ \
_ %� \\ \ \\\w _-_-- /� \< \ ) \\ \ \\ \\ - --_- �'' J ��`\��___ _ -_lull\ IIIIIIIIIIIIIII IIIIIII II II I I IIII IIIIIII II // / \/\ ( l�\ \ -
?� �- \\� -/_= = / - \ \\\\\\\\\ \ \�-_== _ _=��►~ \ \ \ \� �---�� ` 1 s� � �_- _ - �'�_ - - - _=JII I I I III IIIII I 1 II I I .l
/�/L�//i 1 I \ -/� /� / \ \\\ __ __- \ \ -- -�► ____= ____ 1�I IIII `\ I I o II III
-� / %\ < ( r /v\vvvv - I,I /�� __�____ �'�_ �� ,-__�__��v __-� )111IIIII\I11111 III II) II II II l _ ��
__ I I III I I v/-__-_ --4
// 11 I _ �// / 1 \ v v = __ - _ - _ -_�,,, y _� _ r v / - - _ _ �I IIII I III I I II\ IIII 1 - _ ____ ___
vim_ _ _ _ -
/ / / II \ l 1 �A � v \v �F= - � �1 I - - _- - � '� ♦ _y ���� / � � _ �_ ���/ I (IIIIIII I 1 1 I I I I Vl ll 1 -_ �o _� _
/i % / > \\ / % \\ \ s / \ \\ \\ \ \ -z- > ��� l l y ♦ - \ \ �� \� ��� � � Q( _ _ - _ _ _ -- i,,11 I II IIIII 1 11 11 I I \III III 1I I //- -- -_ _ -48 _
\ \ - \ - �/\ �_ -7►� I n 1 .dill I III I I O I / - _
/ // / \\ \ ) /i� / i/ \ 1 1 \� \\\ O I - _ _ f ��� - � � =_ _ = __ _ - -_ -- Jl 1 III III I\ __ =4� \�
/ i' // l \\\ � /�i / i / \ \\\\ \ \ r \� \\\ \�-, l _ _ -�- a : = = _ = = - � _ 1 _\ , `� \o �\\\1� - _ � _\ _ _ � Ili \ 11 I IIII I I Il 1 II, I�\II "\ �/ ��_ - _ - = \�1 \�\
(II // / I \ °1 / �♦ \\\ \ \\\\\\\ ���\ \��� _=1�= _ _ - _ - --] � _ - _� o)//i� �� - ��If ♦ = r�l \Il 111 I 1 I II� ll' 1 �1 ice/ - �_ _ _soo \\\� _ \\ \
( IIII \/ ) \\`\ / I ///♦ � \\\ \ � \1 \� - �� _-_-=--_ = - -� - - i \ I III �♦ 1 �ed \\� 111 __-__-
(o I 1 \I II 11 / - - \\� \ VA\
I I �/ \\ \ \-� � - ? > - -% � \:\ - I I o \ \ IIII III II I \ /
I \ \� _ ♦� - / �1 \ -�/ I s �� II 11II� III (fll / / �-- __- — s�\\\ �\� \
/) I // I \� / //)// \ IIIII _� (�_�_ �_ ( �_ 1 ) I \��_ III o\ ♦ 0 1 _��111 I 1 / / / r\\ \ \
70
_ _ �►�/ / ) ) ///jam I O (�- J IIIII III\ �Illlll III / / / / //\\ \)(l«
\ \ i--r�- _ - - - �..�- \ l `�l �_- ��10 % I \ lIllll) ♦ I11 Illl II \1 IIIIIII l S \ / I I I l l / / // - \\�\ I\ \ \1���\\
1 /I 1 1 1 `� \ �j)�/II ��� - �_� �-�� ill o a I I� I Il I I I \ I I - 1 1/ 1)
d )/ / `¢ / _ \ �I(� \\\� _ � - °9oi/o\/ / Lam° \ \-- - ==-c = _ --__ - \\\\� �'F/ ) `��►� \�\� j " o I �, I11 II I I/ IIII Ill \ IIIII III / -�\ I I �i��%/ ll I�Illllll
�' // - '� I ♦ ♦ IIII 1
t 11� -- /�� / b t c i f 1\ \\ II o 1 I1 II III III \\1 I I / 1 / o �',= l ll I
1 \ 1� O I \ \\l am na �= = / _ o �o , � �o �� \ \\� \\ _\ t III 1 \ ♦ III r 1� IIII III I\III I \I IIIII \\ 1 I I \��,..o /� _ \ 11 I
I I \ \� \ �> _� - - - -�� = _\�� \, ��( o � \�\\ �� III I I l I I III I I \ I \ //�_ ii/
1 1 \ 1 \ \ - - _-- —1 � / \ _ _ -� �� \\ � c � r \\ \\\ \0 \\\ \` ,- \ / III ♦ I I ✓/ I I I I I \ I I // i �o/%%`�
_ - '► III Jo / II I I III 11�VAV1�V A I / �� vvvv
I > \V \1 \\\ / - - _ s ' \ vv vv vv1A\\v v A,---)� W I o ♦ I I (I� II III III/ IIII I 1 A \ / / �/
Ci / \ \ \ II \\\ --� / �/� �/ ) \ -/ _ ` ^oC \ \ \ ��° I I `* 1 I I /N l I I III Il \ \ \ \ \\ \ \ \ I 11 11//I / \ \
1 1 \\ vvv / v - �� J l\ \11 /° v v v vvvv II l I I I/ IIIII III I I IIIII 1 v � 1
/ / \�\V --- /7 / /� 1 A --v ��/ vv�vvv v VO\� II I ♦ 1�I I v I \AVA v I�
\ \\\ �\ /� \\/�� )\ \)( l / \� �llf�_-o \\�\\\ \*\ �\\ *#- III ♦ 11 )I)IV IIIII I IIII II \ I \�\\�\\ \�¢ 11111�1��,510\IIIII %/� ���
O \ 1\\��/=\ / �- \ ' , \�>\\ \ II\\l)1 l/\-J3�\\\\\\ \\\\ \/ JAI / 111 \ II II II )\1 I \ \\ \\\b II\\� 1 1 / ��\
- 1 / i // \ I l 1 \ > /i _ _ \ \ \ \ I %7I{� ♦ I I I 1I I I I I I I I I I� / I I I I I� f I II 1 \ I \ ,\ ) \ \\\\ 1 \ /ice �\ -- \
V / 1 1 / �-� / � � - O_ Av\A\ �\ I /// J I I I I / , / /) / � \ - - \ \ �� w���
�� �l I \ //y\ _ �\ \1/ \\ \ �o \II \� ���\ \\\\ \\ � �> // ///�, ♦ III I II II II I IIII I / //// /p \ \�J/r\\ti0\ ��
/ ( \ - /�\ \ \( \.� / Il II II11 I �/ \�� \ \
1 I I I \ \ / \ , - -- / I / _ -_ ` \\�\ \\\\ \ I // / I , I I I I / / / //// \\\ - \ \ - / O` \\
--� I I / _ \ 1 / / - / /i-\\ ),ll I \ \ 1\1 II I //ice _=- \\� \ > a�\ \\\\\ I I a ////// ♦ II �n IIIII II I I II111 I 11//i///// i/ \5�/i0 \\\\\��\
V 1 11//� / 1\\ \Il I ♦ I /� / III II �I I �/
I I v 1 OI , I � _ �v\ /� / \ / v� / - _ _ �v� = �� ) % \ II ° / / I I I I I I / // _ v o \� \
I I 1 / � / // �f' \ \ v v _- -- — - - >> >���i�� \\\ \1A \ \ I I I I I ) /// /// I I I/)I I I III / I `, I I II / / . / � v � A\ VA \\V\ \
v \ ♦ /� \\ �y , / / I I I I� II I I l l I/( / �- - - - , v �v V�\\ V�
1 ( I l \ ( �_- .� /i V / \I �, I II II ) //l 1 I I� J I III IIII I I I / / / \ - �v
I �I I v h / // \ I I I III I I I I �I I> /'
/ //� �� � �� �// I I V II s � /// l / \ / / / - - - v ,� \ 1A I
I (/� V/- // (� // AV\ y d �� /r// /- ��r/� I I I I I / �� I I I I I 1 I S
/ I - \ r \� �� s-�\11/ //% // _ \\�,�/�� //� J�\\��/ 1 I \IIII \ o I I I II I I 1 I / J / / / / ;--- so�� \
\ I _ v \ \) \ A► d / - -� / Ii //�-/ /// IIII \ I I I \vv�s O I I /l�' 1 / IIIII III IIII 1 I I I (/ / / / / — vv I I
v 1 / I 1 /-- = v A �\I 1 �/�N - - , �111 // l/ ///�' ( 1 //�//�//% /�/ I I I I'V II\ v_ _ _ / )� s°; v I I o I II 11 II I / I 11\ I �( / 540_ v 1\ 1 1
I - \\ 1 1 //, / I1 �aso� v / �i( /////- 1 l __- I I' ) 1 I I I I I I\ I I I �- v v ! 1
I s - vv V A \ �1 // / - _ -y_ 11) I I 11\ \�_ / A / �► ,/V�i//// /-� v I� I 1 v y_ ___sso°,, - � : � I 111I 111 I I 1 \ I / / v \ \\ 111 IIII
I\\v�� - V A\\\ ,-- \I)��\V1J/VA\\vim �i-�vvvvv l I ///�//��/�/V / ��- -_540 /vvv I11/ IIIII1111 1 I11�/v�\\Vlll I/ / �//- \ 1 1111IIII�(11
\ � _ v >> / V /-- /,- -� I\/Jlll/v�\� / v� �/ �y�/�///�/ , / ' _ v 11 VA /- _--- � y �v� v I n I III I I)I� VA\�� � 1� I I / /\ I > 111� III IIIII (l� 1�
\ ) \\\ / / -� ��- f ---� -\ \\\\\ � \\\\\ter \ II / I 1 I I / I 1 1
\ �/ /i m� 1 \\ \ /j - /� 11 I I I,1 ��//// /� �� 4g0i ^� \ \\\ \\\ \ - / /��J/\/ /�/ / - \ \ \ s I i ; \\\ \ 1 I u I I I IIII I \ 1 11 \ � \\ I ( I 1 111 I l I / / / / \ / I I II l0\IIIII \\
�O / \ / / -/ , \ l \ v- // / ( (/ / / \ � \\\ \ I I \ 1 / \ 111 I I I
/ - - 11 1\ /////// �- _ -1\ 1 �� // // / / / // - \ \�\� _ (/ - �-\��)\ \ \ \( I I I II I II I I,� I I\��I / I I / / / /�// // 1 Ill \\\\
I l_ ( / I //i I I I I 11 \
o // % \ \ /// i- y= v 1 11 �� K,/ z- soo = v v\A l I l l l l r V iri\// // l 1 11 l/ / l - v v _� ��� -"vvv\w ` v \/ l I l l l l I I I l I � ��� (� \ V A / // �(/ / / l) 11 I� I I
/\ �� �/�1 I�/ / �v \ V �/i A\���I/ i�- vv \ I l/))) 1 //////�(/I II//�//)I �l / / �'��`� sow ���w� /�\-''lo/-�� II 11111111\� ��\ 1�y 11 \1 \ I�I 1 / // \ I/�(/�%i /��II�I)
\` >>i / /i/ V A I ( / _vV\�_�/ / \ ) 111 I , III( I I / / / ( � �� `� 1 \\
o p o \ \�O\o�� n III \� I 11 I I II (\/�/
/ /� // l/ �� // __v���/A//i svA ) A� //\//i/ii 1 \\ VA �IIII�III 1N I / -- �-- ', ��vvvv� O�v �- II IIII vv �� \ I I / / 1 // ///II
\ �1 II Z / \ fl
/// _ / � / �� A I I (( \ v /i/ '°, ! / l / r/i/ii / A\ \�so \\� � ( 1 I \ � v �> � � � �\��yv yv ) A I I IIIII /\v � O a I I I I l o / /�j / /////)1�A\\� v\�y<\
i / i / \ \ \ --_% 1 ( // ///\/ / / \ \\\\ \\ \ o .\\ \ \ \ \ \ \ \ \ \ / - I / / \ \ \ \ \ ` �/o IIII ) \ -� I I l / ) \�\)
-\/ / / \ l / / / - - v - ) v \ \ �y ��i �l I )) I I / y� - �/ / //i/ /\ // V l
O / / / \ \ \ I \ \ \ �� ^ \ 1 1) (�j // \i/ii / / I \1\ \ ,� 1 � \\\\\ \ ���\\ \ \ - - \ \\ \ \ � _ ,� o ` J - _ �/ /// / / / (��- - - l l I /o/ / /% /j\ /i//�/ j //
/ / I / / / / ///// \ , \\ --�\\ \� _ _ _ \ \\\ \ \ // // / J� -
�/ / / / / v\ �V \ - -v /�����VA\ vA� / / � ��� / ll //i�\/ '
- / / l / - - �� �� �j / � —y \ V \\\ VA / // /� \ / / / \ �\ � /A� ///�/� /� j��i
v I / / l / / /� / ///�/ // / v i L \ \ \ \ l - \ \ \ \\ vvv //// V / / - l l /
/ / / _ / / / // / ////// - \ -_wv v\V\\\V� -/ice 1�C�- //( w \ \ \ \ \vim � �� _ / // / �/ / /l/ o��/// // /ii�
�// / \� \\ ( / / �� //�/ /� / / %�\��\ ��_ \\ ��\ \\���%// \ I111\ \- 1// \ �� \ \ \\\\\\ _=�-�_\/�i/// /- / //- l l/ /'V-/�//\�//L'�i//i\i/
\ �� \ / ////// //////\ \ - �% ll1\\\ �i\� \ /�fi O ( \ \ �\\\\\\55 _ __ _ / / ✓ c /_ -� 1 / l t� / / /////
l ( = -- \ 1 ( / / / ��i�/ ( / _ ��, \n\ )>� /III \-�i� �i \\\\\\ / \ \ \ \� °_\_= ___ //// o /�/ \ \ I//�j(/ / / ///
/ ( / ( _ \\\\ \ ( / O/�/ /\/\ /_\/�� \\ \\ \ 7 //�\ / I 1 \ \ �� ) l \ // >a \ 1\� \ �\� _ � _ - /i/ / / -// I I I (l�\ 1( ///� %��
\\ I \� /�\\\\ \� \ I v/�,�.iiii%\/i/% /� O%�/(//� \ �\ \ /l�// // /l ��r-��\\Ill \� --/// \� O� \� \ ���s4p =__ ��/ / S� \\(/ / 4 \ 111I1111I\ I\ )\ �/� ii0/,�'
- _ = i= -
- - /���\ \ I / (� / ((1//// //� \,/ \\ \ \ / // // -- --' \III \\ \ / / 1 `` -�� -
1\�� J� - / 1 / �� zr� 111 \\\\ (�
\��� // _ /i//
I /ice /) \ \ I(I I \ / / �/ / ,- \ \ // -- - _ I /�\ \ ( \ � < �l / / \\� 1 //-
�\-- - - moo=' � / / /'� // / \ 1\ \ I ) I I I \ \ \�\\\1( / ///// - �� \l\/ \ ) \�\\ \\ \II\ ate/ � o (l � - = %�-�,1 I \ - /// \\\ \\ I _ > rl � � / \ \ / � �
_ \\ \\\\Z ( II , I�- �- \ I /) V I \\ \,-=_ __-_ -IIII\ ` �/ \ /� r I r 1\530:;zz;/) / / /
1;- / i -�/ /�/� J o(I, \ II \/� - �� I // / \ �_ _ �- = I\ \\�-\\_��✓/ \\\\ \\���'� ` i ( ( \ �i l 1 ///l/\ ¢ IIIIIIIIII/i,�\\-�\//�// (/ /
/ / / J ) I / _ \ \\l1 �\� I I I (� \� - - - 1) Ill ///� / \ - - \ \✓�\ \ \ _ \ < < t _ ll/ �� 1) )1 I I �`� ` I I I // 540 \\ \� /
\ _ / / \ Sao ����-_� - I /// / -,� ��_-I I \ \\%\\�\�� \IIII
/ /� - \-�\ \\ III/\ �1 1111 \ \\ /�/((-_ / \\ \� ,,-_ _ _
/rJ'� //i/ / //'yam / / �I I ;_� \ll)IIIIIII�// ,-1- 1)\\\\�-��- 1\\�l\\\�\11 ) -\;� \ \��_; \ -\--- II /l \ \\�\/l( \` \�_ 1
-- - //// \ 0 _\�I 1
/ / //�//� //O /// // // I \ /� /\ \�/////I��//%=��) >\ \ l�11l\\ \\ \\� _ \,\\\\\\` = ��--N \\)� -----_- �\-� I/ I � - \ )� ,\\\\\
/ //�/ /� �i / / - 1 \ 11 > i�//� //I i� / / ;� \ - \ \ \\ \ \\ \\\ r \ \\ \� _��\ \\ \\ l ��X _ I 1 I / _ c,� \ / \ \ - � \\\
/ / ///� / \ \ \ I \ (,( / / // /i\ / - �\ \ \\\\ \) \\ \ \\\ � - - - _ �/ / IIII - - \ > - _
/ /i f// / \ / / /\L/i//i, ��_�J1( /\\\ \\ 11 ��)< I) - ��r�'� ,��\ , \_\ \�0 - _\ -- /�/ // l '--__ _ \ ( 1I \\) / _ \\
\\I/( /((//( ( ( \ I \ \\ III soo ((IIIII(\�=j��i/,,/ ��, < \ \\\\11 II 1 �\ _-/�-_- ��\\ \ \\\\ \'�� � ��_ /// /1I 1 \ - = \ \ \ /�/ ----
�l ( \ \ \ I / I //� _� \1\ \ I1�)lI' 1/ �� \- __ - \\��\ \ \-� - \\-� I I I `\l \ \ - __- � \\\\ \ \� 50 / -
_I II\\I�\ \\\\ �- �1 \ 1 I I I IIII II -- -/ �\ lIllll / // \ I .-____ __ \/�\\-1�11 /II \-\-- �� \ �5 i /� _ \\\
\VA � \ v v �/) \ ¢ I (� II(-��\'yi� _y�Ay v -Jl )I 1111 l v / - / _�v_-__� � �wvvvv�500 / /> ) A\ I \ - // / /- V v \
\\� vvvv v , - 1 1 I I III -- / - v v / IIII \\�<< 1/ /// \ / -\/- = - - _ � � - � � v A , v \ / / / ) I
1 \Av�� _ (( I I I l V I y \/ - v v\ V / / O> � ° I / /\ _ v I I = - - Vv � _ - �� A Vf v \ vvv % - /� i \ I I ) - A VA�
v 1 1 v v v v v / = J/ /Oir(� /i/ vvvv (I I //---- —_� ��_—_ vvv v / / v
-� - vvv II VI b\ ,� V A\\\� / A / / IJ ( ll l/-_- v 1 1 (/- - O�/ - 4s v v / /// / // I // / / \ v \
�v \ v�-� - A�\y�v v vA V� v� /// ) I \--\//i/i/l I }� Il�/( / --,v\V I\ ;--- � � - -) o I ( �\\ \w v / l A�\ \\
��� vv �v vv - V A \ o \\ /l / //- \ I l I / /�j ll v vvA (( - - v%_ --_- ��� �\ \vvvv\ �/ / /// / / /
\ \ �` vv\\ / vV �/ // I I I / - / �/ I (l ll - - vv \ \ \ 1 1 v� �v - v v l
\ - Il \s / -- \ I I ///, / l� \ \ \\ \ 1 \�\�/ \�� -= - soo __\\ \ \ \ \ \ / / /// / / / (( / o / - \ \ \
�\ // / \ \ \ \ / \ / /// / ,I // / \ \ \ _ / —� \� / 6 > / \ \\
/ v \ I I I / _ - _ � vv - / - 5
v � /// ___ ( \v\v vv vv ////�// I I ///,/ - /// / NI // / _� \\\V A \�\\\ 11�I _ v \ I I�
�����_�///j_ r Z \\ \� 1 \\ /i /��) I ) / 11 /�- ��i�i 11 // /� _ \ 1 \ \\ /�' \\///i�� \\\\\\ ( // _- �J\\ \ l \� ( /
�\� �� -- \ \\ -�` - �\ \\\\\\ \ I I( / I / / l ���- / /�// // / - \\\O\\\\\\� \\\\\\ \\ III / \\\\//� - \ %i/� --� ���� \ \ � l I \ / / / / / / \
\� / / - - / 1 / / 1 / /// l� - -s10 -
\�v- v //_�_�- �� \ \ vZ G? 1 �II �-- / Jl%//ii�i)/ //// / ��-'� lljlll) 11//j//j �_vv A \\�\\�VA CAI\A\\VA\VIV I I , / y 1 ( (///=--�_��yv A� / V A TITLE
�, ��_�// / _� v \v ( \\\\� / -- \ \ \ v A) 1 \ \\ vvv �//ram vv\vy ( - - �� vv A V A I / �i A\\� 1 / /
�� ��- V//- \ , / / // /�/i/� , / // �// // // _v v v A \ \ - �v v -- s2o� � \
\ \= �� r ��c��� '� \\ o�(I \ 1 _v �� -/// /j//-�i� ��/-�/� ////// , / / /�-vvAA\�\�Av vV A�\ \\\ III (� -vim-/ - \\vim) I/ f - - -- vv A \ / \\ 1
\V1 y l I I 1 \ / / /,/�i - _ == =4so / //I / / // �/ - v 1\ O I I \ \ v\ 1 I = -/ v I� /� /� / �_ 1\\ �\
-- ; _ ( = �\ 1 I 1 I ( / / / / \////i/� /�`� /� - - �� (/ / / / / - \ \� I I I \III \ - �\ \ III / / - -sso \ \\ \ / /� r -
IIII � I / / / / \ II 1 \II 1 \\\ \\ \\\\ / \\\�I I ��_\\\\�\l /ll / //��//-- /�)I III
( r = _��; r /- =111' I I I\ \\ - /-/-i�i//� _= 4go \\ IIII Ill / \ I II II\ \1\\\ \\\\\\ � I -/^ I _- \
c / _ �_ -I 1 \I IIII I // / � ///�/� -\=- =- --s �\� \\ II I�II�/I(�l// \I II II11 I \\1 \ \\ \ \\\ \ - \\\�\I II IIII I \ \ \ ( l/l /
- \ \ - / / I \ I �\ \- //�/ //� � - %= = - � \\ IIII I I I I / I I \\\ \ 1 \ \ \ \\ \ \� \\\ I - - \�\\, - I I 1 II II - // /\ I
\ //-- �( - - I /i/ / /� - - - - IIII \ \ \ \ \\ \ \ // \ I I / - / I
_ �I 1) \ _ \ / �\ I I \\;p', I I I I I \ \ ��� < <//���� = i' ==soo O\\\\ �\\\\ Ill I \ I � / I I ��\��\ \\ II -) \ \\ \\\\ \\ / / \\� \\\ II II/�/ // - _ - \\ \\ \c l / �/ / Environment &Infrastructure Solutions
\ \ (/ I / v N l (\ �� / - l \ \\ \\ vvv ) / - _ A v v \\\ v I III I I / / /
\ / / I) l� i _ — — — _ -� I I oA (I \ 1 /�� = �_ — — A A \�\V AVV \\j1V AVA VA \�\ \A � � / ( �\ � \ \\ V� ) / // / //�////���%/ / / / i A \V A\VAIIII I/I I I r \V\ 1 1 I i — / 4021 STIRRUP CREEK DRIVE, SUITE 100 DURHAM
1 1 \ ( l� - - / \ \\ \\ I I IIII \ \\ 1 \ �- - \ \// � - - -__� \ ` ` \\ \ \\\\\ \ / / / / // / // \ \ I 1 - soo \ \ \\\\ \ I I 1 / / - - - NC 27703
\ / J/ / /I l — v I I \ \ \ , �� ))I - - ��O\\\ \\ \\1\ I I\ \\ \\ -\ \ \- , \ \ \ \\ \ /� // /// / - \ \ /�/ l I \ �\\ 1 I I I I / /
\ / 11 / — \ \\\ ( I 1 I / I \� \ ( \ ///\ i� 1 _ _ 520 \\\ \\\ \� \\ 1 % I \ \� �� \ \ \ � \\\\\ \\ \I I / // ///, / // � \ \ \\ \ / /// I% / / — �\ \\\\ I l ( ( I / — — TEL: [phone]
1 \ 1 I I � ' — \ I \ \\\1 \� L / / // — — — — — \ \ \\ \\ X 1 \\ \ - \� \ \ — \ \\ \ \\\ \ I / / I (/// /// // / / / / /_ \ \ \\�L /,O / / / / — — \ \\\\, I I I l I I I ( — FAX: [phone]
\ \ I IIII�IIl1�// _ vv�� \I1 / Ip 1 v v \ v�y� / ----- �v \ \ 111Avv ti> > v \v - vv v\\ \ I / / / v /r I \ \ �v - FOR
I I II \ / / — -- L \ \� �I ( M \ \ \\ \/ � i — — — \ \\ \\ I — I � / -- \\ \\ I / / // \ \ \ -- — / / / / — _ \\ I \ I LICENSURE:
I) l v IIII I I - �' \ v \ v A 11111A / \>/ /)I1 vv\\ �I 1 IIII / / \ -///
J II \ / O L� \II� I I \\ \ —S \ \ I I\ II II 1 \ //\ // ��%(II �\ I I I 1 / / /// / // / l J j / / / \ \ \ \\\ 1 \ \ 1 I \ 1 \ \ \ \ \ \ \ \ \ I- — NC ENG: F-1253
ll l\ v v vA\ I / / vv yv� AID ( // a I ��///�--�vA l((_-�\\I 1 /1/II//// // // / / (l --_�_ / - v \ `1 Vv\\ \ \\ \ \ \
I 1 I 1 \ \\ \ \ / - T I \ \ \ \\\ 0 \ I 1 \ \ / — // I — \ \ / / �\ \ \ 1 \ ` \ \ I 1 c0 NC GEOLOGY: C-247
I vv v v I \ V I / s° � v, \ ) I / ��/ � IIII I1I 11 1 v / ll (// �_;/ / - 1L`-=wVA\ ( // // / ( v /A/ / / v v -� A\ ��\\ \ V V A \ \ -,A \ 1
Il gy v \ \ I I I I / I W/ \�I v\\V I I ll I I l/ l \ �� \ \ \ \ o \ \ I SEAL
\I � // I ((� r/\' �AV Avg
I�) V /�/ l \ � '�y v VAA��_
\ \\\
wvv�\_ ill
\\\\\ � C
1\�N �/?Ill\
\\���-
- - - / \ \�
l Illy\ \ - - -%_ ` 1�\�/ \\ ��=
III111I11(I � � ���_�_ '_�_=-___�%- \��11111111�i� =\
1 1111111I) 1 O - � ,N\\\ \\III i/% / __- \\\\
I � - - � \ V 1 � Il/ /ice y�
III Il>/ /� 1 O
III ) l% / / - _ _ _y A\\VA\ Y/ // /// w\
IIIIIII ( I I / // _ vv v VAV V/ /-- w v
1\,I,111\\1\II''' 1I�1 I11 — _ ,\\ 1,\\,,1\II,J,�//�;� \,�\
I\1\\III I W -\\\ Illllllllll �/ �/� -_�
IIIII IIII\VA�\II1 1 l (III / / _ v1 lIllll VAA\1(// 1// /� y' m
VIIIII)VAlll)I I11111111 \ \ \ v vv v\\ /1�1111 IIII 111VA\�11111�/I�11%//� vvv P
hIull IIIII,\\\\\\ \ \\ � \\ ll lIllll\- \IIII11,I,I//,,\ 00
11f(111I111 ',Ill \1\\\ \ \ 1I1����\�(� , - ,O �l I II1II1IIIIl// \\
/1\VI\\\VA �\ yy� �� v A\ O��\vAV�Ow\\�IIIIIIII IIII . IV
- - - - - - APPROXIMATE LIMITS OF CCR BOUNDARY
LIMIT OF UNLINED PORTION OF THE INDUSTRIAL
LANDFILL
LIMIT OF LINED PORTION OF THE INDUSTRIAL
LANDFILL
LCID LANDFILL LIMIT BOUNDARY
SURVEYED POND AREA
SURVEYED STREAM/CHANNEL AREA N
«+E EXISTING TRANSMISSION LINES
AREA A CLOSURE EVENT 1 LIMIT
REFERENCES:
1. ASH BASIN FACILITY BOUNDARIES TAKEN FROM SYNTERRA, COMPREHENSIVE SITE
ASSESSMENT REPORT, ROXBORO STEAM ELECTRIC PLANT, SEPTEMBER 2015 AND PHASE 2
RECONSTITUTION OF ASH POND DESIGNS FINAL REPORT, REV 0, JUNE 16, 2015. BOUNDARIES
ARE APPROXIMATE.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON APRIL 16, 2014 BY WSP.
ROXBORO ASH BASIN CLOSURE PROJECT
ROXBORO EAST ASH BASIN (EAB)
EAB CLOSURE OPTION 2 CONCEPT PLAN
NOT RELEASED FOR CONSTRUCTION
II �� \AVA\ 1 I s - v �� -A / v\\� / // � I I I ✓ / / - / AI I I / I I \ \ v // / / 1 s-, �A I \ I
_ v A \ I c I / / I III 1 \1 v ) ))/� // %// /� \� \\\\\11 I III I�II(1 ll/ I VA / �// / o v v 1 \\ M V ASV A \ \
1 v - � \1�\ I I/ I � / I o
\ �,� �I I ))I I) I I o to \\� \ Jsfi \ \/ / \\ ( �\ \ I 1 1 J IIII 1\ �/ /� / // \ \\ III I I I \ \ / \���//�/ �� \ �\O \ N \\�\ \\ \\ \\�\\\\
\ \ ,/_ )11� p , 1�11 l , / / \\ \��\\\ \ s \ \� DUKE
'\ �-7/L 1 IIII I I 1 I I �Z I %/ / J\\\ \ \ / /—�� \\ I / I / // // I %O ( / /\ \ \ \\\\\\ I \ \ /� -/ / o con.Q \\ \ \ \
i ,-� O IIII I /� - v 1 / I / / //� / \\ \O (II IIII 11 V1\V I V A \ I /�/ -3'6 )�1--v zz\) I \\ \\\ \ \
/�� �,�, ,�/ 1 II I / 11 I I V�1VA v y �� I l v / = Av v _ / III 1 / I I / l /I 1 I /� v \\ \ \ 11 v v / y �' \O O / vvv \ \ \ V A A v vv vA
_ / \ \\\\\ \ I Ill 1\ \ \ I ( \' >\ \ \\ \\ \\\
/� \//I 1/ //�// I \ \ �- 1 ( - \ � -%/ /� \ \\ l ( I I / / I I ( / /
%� Oi / /////�// II /I VAy I VI (��f\ v -530 - ->j vv vv s3a°,-/� / )/ / II//////�/l //IIIIIIIIII , 111 / �- v A\\�\\V�V�\\ O)II II 1V A\\\\VAAV� 1v vv v� v\v A \ / I / A>ll�<-/ �� \\\ \ v v� R
-- /� /� / \ \ \f���\ I- - //// �\ \\ s o -- / / ( I 1 \ �\ 1 \ \ \ \
// /, I I / I , \ \ \\ \ \ \ \V \� 1 1 �� vvv v N R Yo
/ / /�/ /\�/ O//ll1 I- � _ �/ III II ��\�� 1 - �\ � � v30v �� // // // - I 1 I / � I \ I \ \\\\ \\ �� _ v v v v v � v
//// 1 \\\ \ 4 \�\� \ \���\ � \\\ \ \ \
/O//�� / -- I J� v / / l� v �-/� IIII I\V \ 1 \\\1\ \\\\ v_ - v vvv\ \ AvA v I ) v v
/i j\�%///iii\ /II ✓i//v I l -- o - 1/ 1 I\ v IIII v) V, vvv v vvv v v v��� A I
\ - 62 - / l ) ) \ � / - � J ) 1 I \ 1 l 1) 1 \ J ) \ \\ \\ \ \ \ \ \\ \ \ \ \ / / \ FILENAME: EAB Closure Option 2.dwg
/ / ////// \ //I/ice\\\ \-_ / % C\ �� \ \\\\ \ \ \\ \ \ / -
/ / / // \ / / / \\ \\ l�\ \�- /%o �� / /// ��/ / 1 ti 1 -\;- \ / I / / I \ \ - - I III \ l� \ \ \ \ \ \ \\ \\ / \/ '/ ) \
// // / �/ I / I / -�\ / 5 1 // - � F` �\\�_/ lI l _-_ \ - / / 11 l \\ \� \ \ \ \ \ \\\ - - \� \ \ �// / /i \ / / DWG SIZE
//////// ii\\\\\� /�\ \ /��/y / / �i �\ \ / - � - ! I -� - Ill-- l \,\. -
// //( l ll// 1 \/\IIIII 1\ VA v / - / / I I > v vv v v�� .,/// --
/Illl 1 11(�///\// I \ / / z,1P\\11\ \ °#e' / /� �/ 7 / - \ \ / _\\ ) - , s� _ - _ __ IL��= ANSI D
/J 1 /� I ( I / /i /// l 1 \1l - - I I ) \ / o / \-� \ \ \` - -_ _ - - - fie'- _- _
) 1 / / / / / // \ \ \� �� \\ I I \� / / " \\ \ � - A 10/22/2018 7810181107 CIVIL DESIGN PLAN NP BB NP DG DG NOT RELEASED FOR CONSTRUCTION
/// �/ II �////// 1\VAVA� ( 0/\ h/I I \ v �� ��vv �___-_ -� 22"x34��
/ ///�l I /% / I `' / �/ /�/ \\\\\1 \\ ( I \I �\ l I 1 / 1� \ \\ - - �\ / — — % i = - - - REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR APPD DESCRIPTION
SCALE: AS SHOWN
DWG TYPE: DWG
JOB NO: 7810181107
DATE: 10/22/2018
DRAWING NO.
DES: NP
DFTR: BB
CHKD: NP
ENGR: DG
APPD: DG
REVISION
m
<
co
F
INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9
1 1 1 1 1 �
Plotted By: Bowden, Brooke Sheet Set: Roxboro EAB Closure Options Layout: ROX_C999.001.004 SITE EXISTING CONDITIONS - TOPOGRAPHIC MAP October 31, 2018 04: 34: 59pm P: \Projects\CLIENTS\Duke Energy\__7810181107_Roxboro_EAB Closure Plan\00_PROJECT_SPECS\Eng_Design\Drawings\Exhibit\Conceptual Submittal 10.31.18\EAB Closure Option 2.dwg
EAB 2.2
10
IQ

4
I I I I I 1
3 4 5 6 I $ EAB-3.2 REV. B
F
--- --
t t
2 � p�_=
i
\ PLANT DISCHARGE
CHANNEL
I_\�r \__�___- lJ�
_� _ _
\
_ _—__ —�_ � �t _
\ 1\/IIIIIIII — � � _D � �\�\1
\ / I Ilpll�� _� �I1\11/
III IIIIIIII �\
�, _ II11 \ JII1111II ,IIIIIII
( r \IIII IIIIIIIII I IIIIIIII
) / A211 /IIIIII IIIIIII
/ -i I Illllf IIIIII
1 IIII ll�`'
\ _ III
/�jr/ �l�\\����� ��__ _ o III
( //�� I ,a��/ / -_-- Il
\////\1/ /1�� l // / � / > � A � — �I
/ _ �\\ \
\�\//��\\\�\(/ / /�////�\ j� j\///j\ \,, 11��II�1
- f l / I --__7 / /\ i'/� �-'/�\/�� \IIIIII\
- _ / / / �� - IIIIII\\
�I I /� - ��\ \ \ I I I I I \\ / �` ,\I �� �/ _� \ \\\ \� '� ` / �i� \ \� �� - .� � / / \ � ,� ///�/ //�- � � )S `_� \ \\\ \) V �� ', III ) I I I I �\ \ \ \ \ \ \
III /- - - I�J� II III \\ \ 1 �) \ \� \\ \ J / \\\ // // -�� \ \��s //// / ��/ �- \ / \ \\��
III�/1 �_ _ \\ =J1 I /r I / \���^ �\\\ \ _ \\\\ \ _ �� \ �_ ///\I-/���� �\ II\ \l 11 I I i s \\�\� �\
II ( / (r�=_I \� r�l _ J 11/, -� ( \\ 1 / ////jam ��\\ � \\\\ \ ` )/ f)) \�// ��_\ 1 %//!�i// �\ \\\\ �\\\III/ /1 \��� I \ ���
l 1 v) v //- / ( (�/ /ii/ / -- v��� v vv �r \ �/� I /�jl�__,�� _ AV \\I A\IIIIIIII / / \ v) �lll/�_ v� ��wy
I I%J \ III I I \\ % - - A i I v � � \ S /�/ y a A v � � v) r � � / \,�wv\ /� -\ -\ � ; - - 1 y� )/ Il ((( - - \\ II \ I I Il 11 I / � � __�
\VA\ IIIII IIII �/ /// III / ii �y//��i// �� I I \ -mow 1 � vvvv � ( /' - - , � A - - v 1VAVA Ill I \� 111��11�, / / //// , w� y �
\/ \ III IIII A� �=- yA//// l I I I / jib ,�/iiii /\ vv y vy \ l\� ) / A vv\\ \ i �� l /�/l /\l1/ \ _ _ - Il \ VI 11 I 1 / �/ - v A
-i - \�\\1 \\\�\ II\I\I / � / / - 111
/� AV //VA A� II(I��-��IIII �\�I \� \ ,A/I �li //v-// // //// \ ���� V A )II \ I _ \�\\ \ '/ _-- / \
I / \ \ I\ \\\ \ \ \
(// \ \� IIII/ �) �//ll IIII/\/llI / //i / �/ II� / �11I i 1 ///l __� I ��\\\ - --_ \\\\\\ ��\\\\\\ // / // _
( ) , / � -�, l l I I /i / // ///� / // / > I Il l l l� I /�� \ \\ y � - - - -- - - 111AI / V A \\ // -- �i - \_�=
\ \ / I/jl//// 1 I I �\ ��/ /ice �� // / VA I( /\ /�� -�� A \\\ A\\\ \ \ / / / /
_ _ l� / /� /, �i/ /� �\\\ 1 I I /i \ � J - 1 jJ - / I \\ \�\\�\\ / / / / _ _ �ii ----=
- // / /�_-- _ _ - / II r/yam _� ��/ /�/i �� \ \ /i/ - �� � \ i/� h ( v_- / �l \vv \V\ \ / // / l
/ / �/ ////� ��\ / �% ij- I / �� /// �� / // \ I `i' \ �— �� \\ _��//-- /� i Z _ — — _ \ / \ / / / /// ///�\\\ \\\ \\ \\ \� I / / / - / /
v / /i / AV \\\ VA\\ 1 / / / / /
( / / /// vv �_� i — / // // A\ /// \
// /
/�� r� �� I / J / I1 /�/� - \ \ _- \_ ���- \� \ \ \// 11\I \\\ \\\\\\\\\ II I / / / /
\\ \ �— -) \ / //
//\ / I l / / /l // �II ( \ 11 / J I � �%,� / \\\ = _ /� _ / _ i \\\\ ) ����\ l i(/i \/ \ II \\\ \ \ \ \ I I I / / �i / \
/� II / \ t r / \ - - _ _ _ _ _ _ _ �\ \ \ �l), III s\\� JiJ I \\\ \\\\\\\\ I / /
-_ \\/ till II Il( \(�\ \/ )\1 �jN1�\/) /�</�%�/ /ii%\\\\ \-PROFILE2 =-�-- ----� ������ \ \\\��-1 //� %/// \\\\ //%� \ \\1\ \\\�\\\\111 I I I // � �
//- J Il \ Ill \\ _ /l ///�� \� ---_— _— - ��\ \\\ \� \ _- �� I/� \\ \ \ \\\\\\ \ I / /
---��/ 1 lI Il // /i I \\ // / \ \ =-_ - - _ - vv f _-�/ ( \ v�///// v I \ 1 1 II
_-_--���� l( / I /���J� _-� \ \ \ // \\ ice, -_--=_- —_ — _------__��\�\ \�\ \ \��/\\\ \\ \\\ \ 1 II I
-�f� __=- �( / l ��/���� ,\ \ � \\\ �i`�E \ %�`- ---- - --_--- _ - \ \ \\ ��-� \\/i/� \ I I\\\\\\\ \ \ \ �
_�� _ IIII f/� < / > /���� \ \ \ 1 / < < \ � � � \� \\ \ \ / \ /- \\ \\ \ \ \ 1 \ \ \ 1 \
_ o \,�__---- -� / / Ill I �// % \ \ 1 /� - \ \ \ \\ \\\\ \ \ \
//\/ \\ ( \ IIII III /�%ii��ii �i%/i ii � J / � \ \\\ _ \ \ l J 1 / ��\ / l — _= _ \ \ \\ \ \ —
i/iii �i ��i�i��i 470 � \ \ \\\\\ \\\\ / /� — _ — �� —_ _ _ _ ��\\ \ \ \\\\\\ \� — _/% �! ��\ �\ \ \ \\\ \ \
/j / \\ I , _ �\ I \ \\\� \ _ 7r / \\\\ \\\ \\ \\\\\\ \\ \ \ \- \
/� �\\ _ / \ IIIIIII // % %��/% / \\ \\ ( I / / _ �'?'- _ �� ( - - _ _ _ \\\\ \\\\\\ \\� �/% � _ 111 1- 0 % \�\ \ \\ \ \ \ \\\ \\ \ \ \\ 1
\//�//� \\\ / \\ \ %/ ` I I I /i�iii/ice ii�\ ii�i ) \ \\\ \ % / // / i� _— — \� \ � _ — \ \\ \ \ �_ i \ \\ \� \ \ \ 1
✓ ( \ / \ 1 I I III, / �'�\ /��i �ii"� / / \ � \ ) \ / / / --�� I \\� �ii / % 11 vr= \\\\ \ \ \ \\\ \ \\\ \ \�\\ l \
/i/� \ \\ \\ \ \III a'///� //ice- ' (1 s- �\\\\\\ \\\�\\\=�i���i� 1 \� �- \�,'//- \°j\\\\\\\\\ \\ \ 3 1
\� \ (� \r) \ \ \ �i% i �-_ i- �i�/i' S 1 / \\\\\ \ \ \ \ I / / / /� _ — —� I \ r r \\ \\\\\\ \\\\\ __ � � \I \ \\\� ��\\\\\ \�\\\\ \�\\\ \\� �� \\ \ �
I�I� �? \\\/_//���%%%jam'% ,/ \� \\\ \�� �� k/ //j/////�-----_-- I \\� �\\\ 111III��- ��,\\\ \\\ 111II1� \
IIII \ l \ \ \ I I\\\\ice/%/� /��% v \�\\ \ �// ( /�/�/\j////Z = —,e — � � I / \\\\ yR�\ \ \� < / �I I � - / \\�\�\�\\\\11 1 (��\ I) \
% 5 \,fir'\ \\ \ \\ \ I I III/ - = � - \ \ \ \�`1 IIII II r - \\ �� \\
III L� // / - \\\f♦ \ �1 �\ �iii �% _==-___ _ _- Tim \\\\ > �\ 1 11�\I� / \\ �1
III \ ���� v \ v I\�\�,��%�%���, 475 \ // / /\/ / ��---y v vv v / /__\VA111p I I�-- //> > \I
J 1/ / \ \ \ ��//� ��� xoo °\\ \\ ��\ \�/ // ` /i//' = - _ _ _==_=___� \\\\\\\\\\\\ \ \r\\ \ I I I� / \ / \ \\I�II��I- IIIIIIIIIIIII = - %J� l
IIII \ 1 �/ \\ \ 1 \ 5 \\ + 1 = _ _ \\\\\\\ \ \ / \ \1l 11�11 II I (, _ - _ ; � I
ll /� \ \ -- \%% �� r ��1) )\, > ////// /// ////i�� - - -- = - \� \ \\\\\ III /� \ \ (IIIIIIIII IIIIIIIIIIIIIII��� __�/ \
_ _-- — \\\\\ \\ \ IV \ / I
�I I \ 1 \ ��� /���% J / / /// //// //j\///�-- = ____--\\��\ \ /))Illlpl I III - ---
11 _- I /�i �/ , /i/ // / /� - - --_ - \ v vv \ v 1 \ /l� IIlll I -_- -
�IIII/ / r �v���y�%���%�� �- �� y ��� 1 / /////A///V/////�/i�i/� %=_ =-=_-_�wv �vyv\v A\\v \ \�A \ / / / \ �\ I)/�I\III II/��jl�lw;_ti/ ��_yA/
Illl I � � rely— �,��� � 1 / / ///// /i / /// / -- —_— -- — vvvv v\ —// /ll 11 /II_, ,��— \
( / l i� / I �� i / //i / / �l (\l)/ ///ire % % — _ vvvv v v' tv \ vv \ 1 I (I — / / / / I I l 11
��ll� / I \ ///; V 7_/ %/ / / ( �/ //l� \V\��/i / _ = === = � \ V,\v A\ \\ v� -- - /1, �,� 111,E , lnl�l6�,�_ „),� I� / , __ /
I f 1 S / (�l ` \\ \\\\ ((\ <\ �i //�, _ - _ -� \ \\ \ \ \\\\\\ \ 1 J I 1 \ - - /
ill \ I I //\�\ �\ / /�� >>� \ \\ \ -- _ -- ♦ \\\\ / 11 \\\\ \ \ \\1 \ \ /
/ ) / \l \ \ \ \\\\\\ \ /// / - _ - - -_- \ \ / \ / � - SEPARATOR BERM AND SOIL FILL / -
I / ) _//4 w— A\\ \ ( __- -- _ 1 )\ Illl \V AV 1 - / -
II /ice-��/ �� lI r �\�\\ \\ \ \ ///�-= -- = r II I III ( I 1 / /i - //�%��
In 1 j //� \� / J \ / //ll / �\ \ \\\\\\\\\ \\\ (\\ ♦� IIII 1 II III III IIIIIII //\ III 1 I / 1 / /\ / BUTTRESS LOCATION /
00 ///\ /\ / \�� �� \\ VA\VA\ \ 11 1 \ / / I -III \IIIIII III / J / / / /// �/ -y% �i�i �i , , �,
v\V �,vA VA � // /// y % �i - - \ I �I j 472 �15 ,/// / //j/ ll/ �� \ V\A \ VA\ VA\\ 111 (� v ff I / I 1 \ I I IIII\IIII I 1 A / // /\II ( - �j y /// /\\/�// j/�/�A/ //�// i /// iI
/ // \' \\\\ �--� ' \ \\ \ \ \ \ I 1 II III III III I \ /
\ �1\\\ I )/� \ / \/ice/��� -�,� �I\ \ ��/>/\� - '�/ /// 11 /��\\/\�\\ \\\\\ \\\\\\\\ \ / \� ll1 III II \ I / / III\ �;%�%� /i%�� \(/// //��i //i/ / / /
1 / / / / /��\� \ \ ► IIIIIII III I \ \ J ,,��� /;�� 1 / /
II I / \ / // \ I 1 III 1 /// i' /� / // /\ �(\\\ \\ \\\\\\\ a1\ \ / l l II IIIII I I I l I �� -�\ //\I l�� J (l // / / / /
/ / \ // // 1 \\\ \ \\ \\ I I II I I I I I l \\ / �/ / l l
% I 1 / / / // - / / o ���/ ////// J/ (/ // /j / �// / / / / /
>\\ \\\I I 1 I l �� \ / / \ \ \I\III \ /\\//�� \i/ // %//�\\ f\� 1\� \\\\\\`\\ \\\\ �♦ IIIIII IIIII II IIII III III II 'I\ /z,\\\//iii///\lllf�%/ ///%//i�� \III/\\ // ///\/ / //
/ ��\111 I \v 7/ \ � \ / �i , - _ -, v V IIII, �/i / y / _ / //�// vvv �\ \ \\\\\\\�1 \\V \\ I II I I I I \ / // ( /
/� / \ \ \ �\,,N,„\, �,\.. \\ t ( 111 IIIIIIIII / /�/ / / 1z, /
v I 'f / l / I / v AI 1 / 4� /r/ /i // /� /� vvv< A\\� IIII IIIIIII \III I III IIII ) I II\I, A\v v i / yi \y/�i //�/j/��iii Jay) l/ /// / / / //
\ / // II 1 \ \\ \ I / ) ( �i/ / - - � \ \ III` ,/ // o / / / \ I \\ \ / /�
I \\ I I I( r \ \ \ II I \//i \/ /�i / �// //\�/ \ ,\�\�J�\ LIMIT OF LINED PORTION OF THE INDUSTRIAL LANDFILL IIIIII III II I I II I I \\\ /ii� // /// / // //��////\/%\ �/ / / / /
/ �� 1 ) \1 ( / - rl / /// / // / �/ /�, v v, ,� ii i IIII I I I II IIII IIII v / // o/i/// /iiii/��/// / // / / // / v
\ ( 11) I I r (/ v v I ✓ /�� i� y//// /// //y/i/i y // \/ \vvv\ ��\ \ \\I�w \V A \\\ III II' IIIIIIIII I III Ilvv y y /i �y / / // �/ / / / �/ / _
1 r�/)1 I I l v/ vA 1 /�/ I I I I -// r
I I / / / I I l( a \ V A\��I %/� ► o /�/� /� /�/ / �� v�y y AVA \A\\VAA\\ VAV\ v I I I IIIIIIIIIIII I I I /III IIII // �♦ ////M //////�/ // / / / // ( _
/ 11� 1 �) I / \\ v // �, xo / // / / / v t \ \ I �►° �II \v /� //� I ///y/, /j / / // // I � v
v / I 11 / I \/ 1 v v �vA \ l )v� ��i/ / l / yam/ /// //� /��// /y /rii/ �y�\vyA\ \ASV A\ \V A\\VAV A\ v I I III II III I I III llyl �I I v/ //�i\: /// rii// / // / /
�V J I / / / / I l l l / vv e / / /� �i /i/// vvvv \A V AAV\\ \ \ ! I I I III I I I / /// �i / / \ - _
����/ I I v I / / V \ I )/ � / /i I l �s i/ / // / // r -
I vv A \V\\ \\ 1 I II IIIII I III II vv//� // /yy�\////// / I l� _�--_--
I 1 , \ \ // / /i ////� °ii / /ii/ / v IIII I I I / / / / / \ I � -
v / l \i / I l / 1 / I v v _ - Av r�� \\AVA\ A\ VAV\ - I III I �II II I I I / 7I I ////i, //i////j / 1
`vVA )I '`/ // / /// �///\ V �v vv v �rl II \ /(��l iiy 1 / �� - // i�//�/ i�/i/ / vyy\ rA/A\AV A\\\ \ \\ v III 11 /'/I// IIIII 1 I IIII/--> y / / /////// / l v��-��- --�,
II \ I I I II �/ \/ // / < \
\� / I/ I\ /� / I \\ \\ \ \ \ �/� /// �// -'/ //i/i\// / / X / \\\ f \ \\\\ \ \\ ♦ II IIII //// I I I I I I I I� I , �/- /� ��/// / \\/IIII/ l / \ \ -
11 \ 11 \ 1 / / \ \ � \ \\ / / I \� / /i I ( / /- - // / //i / /\/iiii� \\ \\\\\ \ \\ \ \\ I I'li� L I II IIII \I / I I I II 1 /- / /// / / \l I / l \ ( I - EAB EASTERN
�� /ii ///� /z /�i / / \V A ( \ \V A \ V\ I I / / / //
vA I \\' I �v ) A \ I v I /� I A _�/ / - - / / I \\\ V A\\ I I �I�/ I I III III // / / / ��,�
y v 1I / \ �\ = v vv1 I I A v \ > ) 1 / V I � \, ) ) -c� �s / / //�/ // ///ii//// / v\Vv I A\\\\VAV\\V\\ 1 II I4I''fl I I I IIIIIIII /�� \ ,�l l IIII 11 I\\� _ EXTENSION
A I / \ v 1 (� I I v \ / I v I, i \/ - � _ � 7�//y ///// ///// //i ( \�v VA\� , ,\\\\V II III II IIII IIII I I III 1 I I I I I I I I //// IIII /\IIIII II�,- - -
v� A� vv I 1 1 I / \ v I I I > / ll l 1 A ( Sri � - // //� /%� �/ / // \v A \ \ \ \ V\ I I IIIII I I I I I ( I
/ \ / /�/ // / /l I I I I I I I r II / / —\\ — IMPOUNDMENT \
� — \\\ \ \ �� � / / / // 1 I I I I / \ �/ I I \ / l l i > l� // /�/ / % /� / / \ //� �� / \�////i/\ / 1 \\\ \1\1 \ \\\ \\ \\ \\ I I � 1I IIIIIIIII I I / I I I I I I I (/111 Illy \\\�\\ _— — \�
\\\ \ 1 \ I I I I // — I // //� /� //// /ii/ // \ \ \ \\ \\ \\\ \\ (III II I I III IIII IIII I I I I II II 1 \ � — — \ \ _
\ 1 I ( I l, I I \ I I / / / /A, A' /� / // / /ice// a\ _- - 3 , \\\\ \ \\ \ \ I I II I 11 IIII I III I I I I III I �� ���� __ _ /ice \\\ _, \ \\
�� \\ �\ ) \ 1 \\ \ I I / I \ \ / I / �� o _ /� /// /� //i// / �\ 1 II I I I J I I I I ��\\� \� J//�\\\ f =\\\\\�
\\\\ 1 I\ -I 11 \\\ 1\ \\1 I I r \ �- �� I /// �ii♦ o�° �^� o^`" - i'/��%'%'� ii'i/i//ii''/ O \\�^ _)\\\1 j1\\� \\\ / \\ 11 I I IIIIII\ III III IIII / I I IIII \�- I I \`--
\ -� v \ \ 1 A\ I vI II II I I \, I II I,� III I ��- �\^vv�� - 1\
I v 1 1 A \ \ \ /I I ///o %_/ ����� /� / //i\/ /� / I II A 1 \\ / I IIII I I I - �\ v� �/� �11 I I 1
\ / 1 Il I I , I / v / - � -/ \ \\ I I III III I I I II III _� _ ��__�_,/ ,
vV 111 IIv - I 1 I I ( \l I l ��/ I� �/� /// / / /i ///jiii�\/i' 1111�1 1 IAII 11A\ / A II 11 III IIII I I 111 II I I I I IIII I I \ _ , � �l 11 II \�
� vv IIII \ III / I I VA J / I �iiii /// / I I , I I I I III IIII I I I IIIII / - � I
/ I l 11 I s ����/% ////%////// 1/ I I I I I �II I � �__- III 1\\
\\ I///11I/ Ii III\\%= \ IIII\\I I11I( I1 I I I\ \ \ �j\\�// / � Cam,/// / ///,� / IIII1IIIIIII III �/ \ IIIIII IIIIIIIIIIIIII\JI IIIIIII IIII II II11 IIIII I =:: Ii \\l����\ J
Ill l/ 1 Ill \-- vvVJ�) )� \) I I I / //// 2 470 ////� III II I I I I h I I I I I I I I__-
/l\ ll�I l \\V 1I )11� = \v // / /�/ / l 1 I , / �� ///�/ LIMIT OF UNLINED PORTION OF THE INDUSTRIAL LANDFILL IIIIIIII IIII IIII \ I IIIIIII\ II IIII IIII III II IIII IIII I\IIh I IIII I IIIII IIII Illj I '� / \\ �V�� �
Ifll I I IV I�\��__�v \�(r//// //�I / I / / A////, ///i, /, � �/ �'� IIII I IIII I I I \ I I III IIIIIIIII I V1 II111 II IIIIIII ( \�\v-_ =y�
= �� \ \I J / 11 -� yv / / / v - / ( II//� �oX /�//I�%� 'i / I �� IIIIII III I1 1 III I I A I I11 IIIII III \ 11 I I , I I IIIII vvvv-
%'�//- V� II )(ram vAI/ A // / I / AI\ Ili\,� o /l /l////// /%��_� /��//�-/--- III I 1 \ I I III IIII I II II II II I I III ���v -
/ ,��\ 11 III // ��_ A\ ///�-� , //� -I== - I II I I I I I I II III ,I I I III ��
/ �� II /Il - vv A\ \ 4j4 0 1 I I (\� (// %�%' j1 // /_ _ - - i / I I \\I/1 III) V II II �1 IIIIII 11 I
�i //�� �\ \\\ Iql\ l)lr\\ \ // \J - III IIIII 11 III I IIII II I
I / _,
II I/(/��i :�\\IIII I IIIII/ �\ ��� -� - - �\ I1: _ \\\\I1\I\II\`\��� ice'/�%��_�_� --_-- \i ---_col ,� 1 �lll/)Illl�l(�\/ �( --� -111 III IIIIII II IIIII�� IIII\\\ I11\IN 11 IIIIIIIII�III \�_�\
II II /\Illlll�l� I,11,11\//� \ \,f-4- -- %? _ \ \\, Aim_- �Z \\\\\\\\\\\\--_-r__ _ _ �► 7 �� _ f\ \ I/lI/IIIII( \\ _ /jlll,I II I IIII III\\111 I111 I I \III IIIIII
II ll�ll/�i/// ��1I111 IIIII�IIIIII I I \ - = % _ �, ,� _��\\\\ \\\ _ _ - ; \ \\ \\� \� _ _ _ - _ y \ \ �s �_\2 _\ ♦ \ / //// / \\�\ _ _ � — _ _ �, I) I IIIIIIIII I I 1111 I I II I I I IIIIIIIII -
1//,////// 11,\II\11 111 1 / - i �� \, \ I\\\ _ --- �\ \ - \\\ \\ \' _ -- \ \ �� — - Il \ ---- = = - / I III I 11 II ,I II I I _ _ -
/ / // '�1 IIIII l llAIIIIII / �/ / / / �_%-� I I A \ v - _ �/ V A v v v v� - / \ _ - lr l l _ _ - -
�/ /// III II / _) 1 I A v ._ _� /> 1 \ vvv\ vv v _ �- ,� --�� /\ # - - — _ 1 I III IIII IIII II III I I I I I = - ����
��// y�/�II11111 IIIIIIIII / / / /i/,_ /g��)Ill���, \ - A / 1 \\ ��v\ \� - lr _ -�_z_ ♦ \ /\/// /L -_-_ -_-___ �� 11111111 1 I I III IIII I I \ - ___yv
�i//�/ IIIII IIIII III / / /i / - ///I \ \ -� � / / \ /� \vvv vvv ivv_ ___ -_ — // - _� I IIII III 111 III I III - y- - •
_ / _ ��__—
/ / 11 I IIII I I I III ( / / /��� %//// V 1 � / � / i A \ v A\� V w v�� y� I I -A� _ - _ „ - - / - - -_ _ - - 1 / - - - v
-� _„� - \ \ \��- — _ -= - -_ I IIII III IIIII III III , -�-- ___ --,\ --
��// /IIII IIIIIII IIII IIIIIII \ / /) /\�/ / / ///� � �i // z 11 I \ � / / �i/ ♦ i� \\ \\ \ \ \ <� / -r ♦ c - - _� �' - _ _ _ - = = -�1 IIII I 1 I I III 1 1 1 11 / �_ _ _ � _ _ _ � �� -
/ / III 11 I I�/ //// i / //) \ 1 // ) //I �-\\\\ 1 \\ \\ r1 I I )�_- _ _ --- — _ �� �� -;_ ����L� = _ -_=_ -_ 11 '� IIII II 1 III \�/� -
I 1111111 I �IV%,IIIII\/�,/ ,� -�/ ////,,\,/,/ \ \ / //o , -�♦ A\\\ \ \\VA wyA� �_�_ — ---___-_ — - � -_ — - — — _-_ — ==-� „II I 1\ ,I 1,1,A //-
/ / \ I IIII 11 /i /%'/ \ y/ \A�,\ \v \ s \�I c � yy - l= =_- _ = -- �=;; ��> �__�____ _ __ - _ _- I \II II 1 �I I //
\ \\ \1�1111111�1/ IIII11�1� i �iii /v //�/ /IIII / /// \\V �a/// //�� \\ VA v �� \\ vy \ __ = =__--__-=_ -__ - ��,���, - — _ - _ — IIIIII IIIII y )II IIIIA %/y
\ )I11111 I11\� /� /� \ //Il 1 I I\ \ �l //♦ \\ _ J __- � - --- ��;;���� - - �- 1I �I I 1///
_�_� v�)IIIIIII�II 11111��/�//V- v (/lI/ I // / A�I1 \ / / v♦ ��\A�- �� s \vv r - -� ��-- A - ---_ - III I III \\ III III \j
_ \ IIIIII I I I\ /� // / v//\ I I I / 1 / �/♦ v A 11\ v L _ v \ \� �_ _ - __ v - \ = _ `- v I 1 \ \ /
I II\� �_ / / // / JJI v� _ �_�- -_�-- — ) \� �� -� �_ _ - _ _ _�-___#,___--__ = _�/ II11 II\II 1 ////
- _ y / I I/ I I / l I V ///l - -- - _ — _ — _ _ - _ - - - ! vIIII\ III\I� AII� / I I � �'
/ ��— c / � o � / \ — //�/ _ � _ _ — — — _ II I I III \\
f= `--JIl /i / ��\ ((III I I I / I(�1 \ \\��__ _ /i/ �� ♦� —t II II I 11 II II
� \ // / �/ \ I IIIIII (I l l ll I ) � 1 a► — � =— _ �V/ / / g8 490 �� \ / / � � ♦ ! I I 11
)\ \��� \\\ \\ 1 \ \(\ ��►�_-- -��/ oo s =_-- )_/'� r� / / / 1 I II^IIII
///_, �� \ 1 //I/) I I I I 1 I \ \ �'-- _ _-_ - ��\ 1 1 ( \ �/- \/ /�� rye /A /� \��/ �� // J1/ 11111111111 I1111\111 11\\IIIIII
\ /�� v A / \ �\ \ \��J - ���� j �/♦�=�-\1 A\ �� �� e vv\ // // / �� / / �� 1� _ I-� IIIIII II I IIIIII\ 1VA
v - - /A - 1 �// / I �l \ 1 v A 1 r / j / / /,,c / / / - I I I 1
1 �� -� v l((\y( / /�i �// A I l !� A \v _-__�/�� / '�C l \ / < < < I III II I 1
/ / / / \ \ 11 \`\\ r • �� //� S \\ \I l \ / / I \ I I I 1
-1_ ,-�� II ill) I\ \// / /\ _ //�� \ \ \ \ 1\\\ / I 1 \ l( (� / / �,�7� \ _ \ ♦� ���-♦ \\ \ � II I I \ II I
/ ) , - \ \ \\ \ - \ �\ \ � I IIIII IIIII 111 II\ \ \
//� 475 L \ \ V v
\V\ //// / r—/� \�� —� V� I 1 ) �1 A \
// // / /( / _ _ _ / ��// ( , \ / - �� ���- - v v v v v I I I IIII
\ 1 _ r I III III / II I 1\i \ \
\V �V i �� � / / - � \ � \ � / / / /I ( \ • � 1\ \ / A 1, �1 ' V - _� - _ ♦ - , v I I' I I I I III /
-� 1 _ 1 / \ \ -��� ♦ _> > IIIII IIIIIII I \ I '
I I / /�� / r / 1 v 1 / v �a - I ��- \ V\ - %_ I
EARTHWORK CALCS
AREA
VOL
ASH CUT VOL
16.58 ACRES
547,442 CY
PROPOSED GRADING
(ASH) CUT VOL
40.9 ACRES
34,146 CY
PROPOSED GRADING
(ASH) FILL VOL
40.9 ACRES
321,613 CY
�( ,�_ , 11 I/I( /i/i/ II / / i�\ _ - y IT/, �A A \ IV �v I v �- �� � I- i __ / / III I I IIII�1 III I/
1 i //�1 - \ \I ♦ 0 1 \\ 1 I //�� _ � \ \ \ / - / ♦ I I III III / I \ \/
I , \ \\ I / , /y \ , \ _
II\(\ (/� `�\ IIIU�\ ✓� \�/'%G / L / / �� - I I I I / \ \ \ POSSIBLE xo \ I 1 \ ii /�- \ \1 \ �\ / / / / � / / I I
�\ \� I I I IIIIII I/ 1 LEGEND
1 1\\\\ \ / //� < \ / /�- \ \1 V `' -^\ - ♦ o 1 \\\ \_ �i >\>>Jl / - / /III IIIII III I I I ll
\\�/ /// /i - ) I I I \ � 2\ \ � I (,7 � ♦) \,o �/ �'\) / ♦,ii DISCHARGE b - \ 1\\ _ __ /fj �� � _///� 1 / / / / / / I III II IIIII \ I / ( I
r/ V AIII ( ))� A %^ 1 \ \ / /� 1 I v \\ �iA _ A - =i% �i _ , \\1 / / _- � / / / / III II III II I I I I 1 I II EXISTING MAJOR CONTOURS
- V I - -�, •� / III
\1 / I \ ///////1 / / /// 1 I I / / _ v //i // ��/ / ����/ II /
/ ( / � OUTLET �9 \\\ / \\ /-��/� �\ i
%� /// / /� IIII ( \ \mac \ 1 \ �/= _\11\� ///,,� //- I / III- IIIII IIII/ I III �I
// ll ♦- �,� ��� ii //�i� , - /III ll I IIJ IIIIII\ y IIIII
\ '' ��� /� \ � / IIII I I \ I \ I I - - - EXISTING MINOR CONTOURS
f=� -�/ �� 1 I // \ \ ll L"ii/// _ 111 // / /�/ice ��, \ II / / \ \ /
_ -' z\/ / , / 1 III / \I (/ 1 \ \� = _ _ _ \v \\ \ \ / -III (( \(I (I (\\� �/ /// - / \
\ -��� I // _- �\ v \ \ ' - /- v 1 / I J i \ \\ v__ / A/� / / \_ - - - / I I III I I v V A
s� / / II 1\I \\ \- \� \ / I I ) \
/ r� �� III ��\ \ \\ ���/ \\\\ ���//-\ 111� /\JIl ^\\\�-?i/ �� _/\\ \\/// // /�/ _\ _ \ll =-- - -/ // / / IIIII IIII I �I \\ \\\
/\" l\�� / / - / %/ \// \ %/ I // \\\ \ / - �\ \\ \/ / \ /i/ - -�ii 1 I \ /// / / \ \�- /\ \\ / ��/ %//�j / _ _- / II I \ \ \I PROPOSED MAJOR CONTOURS
( ��/ / \ vv /��v� /!/� l ,v v� /�/ l\ �� /;,--/ r I�111\/// y �/v A\ /mil%may/ /// /'/ ��\\ / / / I IIII IIV II v
//ii/� \/l�ly� w� ' vvv-/�i/ >/%/11///�� �0 A \�// %�-1 \////i/ y__ \\ �� v / /I/ II III II�� �I I
�/ I \ \ / /////l ( ) / �_�
1 �% ��t� ( // \� / / �, t, \//, �/ \ / /// = \\ / / �� - \\ \\ // / f / /// / �l l / - ��\ / / \\ i - IIIIIII I I- I
r/ l/\ / ��� 1v /�/� A// -_v��� _ / 1\� //i _ 11 1 i// / //// � —� vv �_ _ /�� � i � / III I / I, v
/i/ �� /\\\ o0Z �,>///�/ / \ \� 11 / 1\� I (// / - \ l 1 1 IIII /� / // \l/ / ( / l / l (��aJ, / / _ / / 11 IIII I I I 1� \ /- \� PROPOSED MINOR CONTOURS
l�\�` /a//� if °` r�/ri��/i i/ LIMITS OFLCIDLANDFILL, \\ \J/� \� //,/i \ /J / / I ( I / I(I II// / / / / / (=-- �� _\\ Jam\\ ti / // III III / \\
(��v�y % vIl( I f/ ii� l/i / v, Ill /i/ /' 1�1 I I v-v� -_ ���vv� - �/ -� III I \ \��v ----
/ / \) /�' \ \ 1 /I I °� \ I ,\
�� // \ / \ ((<;r (� ( ////i -,e //�/ �/ \ \ / // \\\\ \ \ l I I 1 �\ \ ( \ \\� �\ i / I I _ /\ \ i \ ASSUMED ASH BASIN WASTE BOUNDARY
�,�% / //l/ A ��� A\\� /�/ �i/ / //i / wy\ SLOPE SUPPORT/BUTTRESS \ / \/ // /y/i V \ \ \ \ v \ \ v A � vv \ /� vvvv � � �/ 1111 IIII I I I / v
\ �// / \ J I /, / / / / / \ _ / —
// v / / / / / I I / /�/ A\ \ \ \ \\\ V \\ \ � w A AVA �-- �
�/ I((((l 1 v< ��� I \vv �/i/jam , / /// / �, \ AS NEEDED v ( l// /i\ \ , \\ v\ \vvv _ I I // - �\vvv\v I 1 II I �jll I l -
I j/r1� 1� \ �/ / / // / / - / - �\ LIMIT OF LINED PORTION OF THE
\ \� / \ ///// s \ \ \ \ \\\\\� ��\ \� - \\ \ \ - - \\\ / \ �� I 1
1 I // /\ � ( lrll �I J (9) I v� M�/� y� // / v� )lI // / // o Il\V1vv \ ���� _� �� / � vvvv - /� \\� / /
/ / - _ �� J / v v / / -
II / / l v V' ) 1 // l\ /�// \ vv 1 vvv v� v \ _ _ / vvv - -� //// / )
! \ /\ /// - q,F\, �'%' \ll (r� 1ST \� 111\ \/ / /// / /, ///� \ � \. \ � I / / \ / / / // ///�j \\ \ \� \� _ �\ \ ^ = �� \ / l - - - - - = // / / INDUSTRIAL LANDFILL
v \ I 1 - _ \ \ ��\ // \ \\ \ / // /\ / / -
/ / I II°��1 , i/ / / // / // / S ` \ - _ - - \ ( I / / / / / /\///\ /% �\ \\ < \ - •\\ \ -, / - \\\\ /
/ / i / ) / / // \V \ vvvv\V �\ �/� - A) - ; /i) l \ _A\ \ \ VAvvvv / �jAV // / // - 1
/ " ��/ I III 111d� fir / ��l/ /// / l l / — - vv -V J I \ l //�// // /� I ��� \VA \\ \ �� v v \\V A\\ % /\% A ����- / A _ \\��V\\\\\Vvvvn�� A ���//�� / //� vvv _ LIMIT OF UNLINED PORTION OF THE
l / \6 /o���� I )�J� �)flti /%/// l // l /=---������ \( (/ l / / / i i/ /�// // A�_� A\v \1 \ \ \\ 11 y ///// > vVAv v v��_ _ --= ��� // /
ll /l� \(� �� V � \ I� l �� = __ �� A ��//// // // / _ \ vv - A 11 \v \ - _ - _ / / // INDUSTRIAL LANDFILL
/ //� ���yV vvvv I1� I! /A/ // -�/ _ �A\ VAVI l l ( / /ii // /\/% _ /� ._ - / �11\v A /�� 1 �i\ \ vvyy \vvA _ /y///� // / y y�
/ //// /// I� (\<�vv\ �)\ \ll I1� 1 \v-- �' =-' _= ������ V vA� / //y/ii/ice/� �� l \v\ / �/ I I \ \%� �\ ) l -- _ / /v v
\j// - \\ \\\\\\ / ! 1 l \ _ _ - /�� - �� \\\ \\ \l I I I , //�/ /�/// // //�� \ \ //� \\ \ //j /// / / I j/� �) ( �� . �/ // ��\\ \ \ \\ ��, — _ - %� / / / l l 1( - LCID LANDFILL LMIITS
l ll // /il f� \ \ oll� ( \ \\\\` \ - ='�Z� �i/' //// >>\ I \1 // /-, i, �� \( \\�\\ . / / / / _ _ \\I 11\\ //// \\\11 1 I I \\��\\ � — _ - - ��/ �� - - —
\\II %// ////\%! \ �lllll�\\\\\�\�\��a\\\ 1�__- ��-_ i///�i�//��/���)\ I \ \\ I / /\ ( l I (/ //i%� /i I/ //\\�\\ \';, / �// / !__ _ =%��)II \�� \\ \\ \ I Il \�(\��\ _ >- /---� )1„
\\ // // /////o III \� v 1 / // //_ //�� , \ \v IIII 11 \�v y /�/ � � �i� // ���\ \Ill (l� i� _ _ // � �v-1: /_ \\\ I \____ .�>> A I /-; - 11//
1 /I 1 / s/il I I �� �� 1 //// / / v A I 1 ��,v��y\ / l//(/r - v\ - 1 \w�� _ - - -� 111 wvv ///� A \ \ \ v
- - y 1� / Amy - = '- %� ) �// /i y''��i % ' 1 1 J 1 I I \\ \\ ( _V / �1A - \ ( )/ I \ �\vv \� / / VAAV\\\\V V ) /� \ I \ // CAP IN PLACE AREA
11 III II� \ ll l l v� /��/iii%/% //�� �, l ��A\\\\ /_ II11�1 �_ � l /\/JJ v� y,�\vy���: � ���/� \ wv\yam � v A � \ \> ( \ v �, I\�-� A \ 11/lI V A
�( (I II //// ///� vv /���_--_-�/// // //���//� - v \__ A 1�� / I Ir y��- v \i\/' ��-_ vvvv �_���-� v v \
111 II II �/ / �l� r�// \ I , -� r /i// /�/�/� /// / / �\ - \VA\l 1 II ✓/ v 1 1 - �,i� v\ v
-- _- �vV 11 y\ v %�-V 1/\ll
I II III 11 ��� I \ l / //�i/ //� / / /- - _ - A\ III // w� 111 \\ /(, - �� = i� VA\vvv\ vv�� - - ��� �� ; � A\l I I / V A 200 0 200 400 FT
IIIII II N I I �I 1111 \ /�/ �/ � / /ice - v � -- /i- r� // /i y / � � � \ - _ � A II / I1 \( / \ ((�w�y �\ �� v� �� �/ v � vvvv �� ��
// /i/� o ✓ ri / / _,// / / / _ I�I IIIII/// �- ( k 1 \ \ , - \ \ �\� \<_ 7 , I I / / / / I I _ - \
I I �I I I /// )� / / / / // // /i // /Z/ / / / - ( I\ �- \ \ \ -
I ���� / I /////� ��� / ( I - �) / )J ///r� - \I) \� ( Ill \\ \M11I _-_ \ \ -- I / / 1 —
I III IIIIIIII /� / / //i/ // / /1 ll I - I\\ �� v �� v�� v
bl III �) /� l \ / / / y' �� y / / / \ V A 1 , - \�/ �� \ V _ \\\ v A �� _ vv vv v w = --= - �v� ) l w I / /�
I Ill I I J I /�� /) _ / / /�/ / /i / / / / 1 I I / -
I /� II 1 /i� ) /' / / ///////�/� ///i / I V A I ///V�//// /// ,� A A\\\\\�� v V v �\ lv - _ i� _
I l / JJ /i /i/ / / � / / // \/\ / ) �� \ �� _ _ _ / / /) I I I \ SCALE: 1°=200�
I I I % �/ ( / / /� / / �i�/i/ /\//ii /i / �/ l / / \ \ I \) I / / / / /ii� _ / 1 \ \ \ \ \\\ \ \\\ o �\ \� l l
// _ /// // ���- -� /
(� II I I l \ \ / j /l A \ \ \ o wvvvvvv v -
II II IIII <\ a vv / �v \ v I ( ////�/iy//�/,�� �_� I /v \ V A I _--_- A v \
ll l v vA I l ( // //� /i/ '' / I ((/ l I / / / v\ ((� ///� % _ v�� A ( \ 11� III A\A� �� TITLE
/ / / v I I / I I / �/ / - - > �� v vvvvvvv�
�� \ 1llI III\ // / \ I (( / \� \ \ \\\ v_�
/1 IIII �y\ / /// �-)v\\ yy�,Av� V�\I\( (��\vvv vvv vA',--_ - IIII - IIII�IIIII�\='— ��y��—� --- —__ \\VA�11111111�VI / w�� /'--- _—�_--- ' �`` �) V v�v�
I /%/ IIIA // / /VA ���i��� \\VA I VA\\\VAA�\\w V -i i/� I ��� i,_ --- � ---_� _
vv` vvv %%/ (\ v I I 1 - I III (� k / , _ _ __ - - - - -_ �_�� �'` yy- ROXBORO ASH BASIN CLOSURE PROJECT
/ v 1, 16/� /� / \ �v� vvvvv v\vim \ / ��Vyvv y� V\� _ _ y//��ll II III ( 1111\��'� EXCAVATED AREA r - - / // II� l\(( V// / / -vvv _- -
11 l✓ A \ \ ( I 1 \ v �1 /// \ - - II / / / -vv� I I
J Il (o w \ % I vvvv vvvv 1 v v�� �,� �w� _ //( (IIII 11A \ \ - Vv /// / � - \ V / )l(\ > I l�( / = may\ \ r�i _- = _ — = y �/ �� �' -�y��� •
I / lil \i/ vvv vv �y�vvvvyv \�' ��_�� �,, ,� � _ _- (� v \v A v vvv / //,/ _ _� v v ) / / _ _ _ / �, \I/ / v vI / _-wvv - I ROXBORO EAST ASH BASIN (EAB)
11 /�d , �\ \ / \ �\\ ���\ \ III IIII \\\ \\\ \ \\ \ \/ %//� _ I �II 1 �--;i//iiii�/ ! r\/)I /j _\ \\\\\\ `\\ I I / \\i== ��\\� ,__ - �,J�\
\ \ I ''� II / / \ = \� \ \�\\;\_ / \ / %\ \�\ �� (�\ \\\\\ \\\ \\ \ \\ J \\ \ \/ / / /� — \\ 1 I 1 / I ///� _ \ //\ I �// / / / / _ — ��\ \\\\ \\\\\I 1 I I _ \ �� __ \\� i� _ _ Environment &Infrastructure Solutions
\ pI� I / I _ _ / /i \ \\ \\\ \ ,/i I / / /�/ ) _ \ _ \ / _� , _ _ _ _ _ - EAB CLOSURE OPTION 3 CONCEPT PLAN
\ \ I J'I //Q ^ / _ — \�\\����� / i /i =� — \/ (� \ \\\\\ \\ \ \ \ 1 \\ I I I I / // / _ — — //// / IJ \ / — \\\ . \ \\\ I \ I — / /// �_ \\\ /�, — — _ — — 4021 STIRRUP CREEK DRIVE, SUITE 100 DURHAM
\ VA v�� �— / A \ �i �� �—� / �/ %/ / ) // /// VA \VA\\ \ I / _ A\�
\\ �\ II Ille // ) // - _ - �,� - \ \ \ \������� \\/%� _ = = \�\\\� \��\\ \\ \ 1 \ \ I \\ \( ( 1 I / / )/ \/ / / \l =���//�i ' \/// l l // \/ \ \ \ \\ \ III \\\/// j� ��\ \\ \\ (// /� _=_ = NC 27703
1 \ o %i /� ���\�v�\ v� /� _ - - �� % _vvvv \ 1 \ \\\\ 1 / / / yy/ IIII l/r �j� �' /// / -PROFILE 1 \\A\� \\IAV\V\ V I v \l / -
I � J /� ( i — /i A v �- �� i / \A \ I '_ — — // // / \\ \ \ V AVA _ —�� TEL: [phone]
//l l I / / / \ \ " V \ I \ \ ( I / \i __�
( II( 1 /G / i / / \ _ \ �� `�i �/_ = � �� % _�\�-\ \\\\\\\\\ ( 1 ) l \ \ \ I / l \ \// ��\ll//�/�j \ j / / /\/ / / \\\ \� \\\ \ \\1 \\\\ \ \ \ \ \ 1 1 \\ ///� \ \\\\\ / /l \ � FAX: [phone]
1 �, `� w� �� �/ i _—� \ 1 ( \ \ �J // //////� / /i//// / / — �� �� — — — FOR
\ (� / / � Ei� i - � � /� _ \ ^`�� =\ (tl \ I \ / / / �/� �/ ///// / \/ - \ \ \\\\\ 1� II\ \ \ \ I 1 ( - � ,- __ \\\\ \� I � I 1 - - - ucENsuRE:
�11 IIIr�/( // //\ \� /- - =_' �= \\J/ter �\�� \ �i�JI III \ 1 r \ / \/j///o��i/ ��'_ _ l \/\/Ill \ \\\ 1\\\ \�1 I \\\\\ \ _-�/ ��\ ��I III //r-- =-
11 I) - \ - ; _� �� \�J\�J _� 1 \�� 1 1 I I IIII \ l / / //\ \//\//�/� �� /�_= = \ \ /// j // //// / / / / \\ \ I I I I1) I) I I \� \ \111 \ �\ \ \ \ \\\ I \\\\\ I ( — — NC ENG F-1253 NOT RELEASED FOR CONSTRUCTION
_ / / / \ I �I 1 \\ \\ I / �� \ I r NC GEOLOGY: C-247
I III I \I ///�/ --- / �=�\ )/ v -I 11 } I I I \\ / ///�/ \ '-__===��\\� IIIII / ///// / \ I I I I \ \ \\\ \ -// \\ I III
��\� IIII J I / _- -_--�\\ I \ �I \��/// __\\ 11\ II III 1 \ I / /�//�//�/ — =��� \ 1 I I / ) \I III 1 Illy \, 1\ \\ \\\ \ ( �\\\\\\\�I II/III/ SEAL
( III /( / \\\ — ) \ I r : �''N�/ ���\\�III \\ I I � I (\\ (�% /'�ii =/ =—�� \\\\\\\ IIIII 11I II/ /(1 I I �l I I II \ \ \\\ \I' 1 \\ \ \ \\ \\ I\ / \ \\ \\\ III / SCALE: AS SHOWN DES: DMS
o IIJ ///)-_� ,�I , � , __ ��� \ \ / / _,J I/� \����,/-- , I \IIII I I \ , ( /�-�% -_ -/ _ \ \\\\ 1 , \ , I„l�� \\ \\ l �� \ \ / , \ /, - DUKE
I l l l l I I 1 \ (\ \\\\\ \\ \\
to I�// ( III (I 1 /((�� — /�� �\ - \ 1 / / -% 1)/ Il/� —= ���_ �\�\_\" I I (( III I I o \ I \�\\ \v���% �— \\\ \\\\\ \\\\ \\\\\\�� \ ( ���\\ \\\\ /// / // \1)) l// /� \\\\\\111/II/II / r— DWG TYPE: DWG DFTR: VRD
/ — \\\ I \ \\\\� I// �� =%—�_\ \ \\ \ \ 1\ \ \\ —\ / l� \ \ // / / / /// / — \ \ ///\ I / �
\\\ \\ \\ ���� // \\ \ \ \ 1 1 l / �_ J _ �i� — — �\ \\\ \J \ I /, I ��l/> ) /// �\\\\\\\\ \ \�1 I \\\\\\��\\ \ \ \ \\\\\\\ \ i // / / /// / // / / _ \ \ \\\\/\ / l I I JOB NO: 7810181107 CHKD: DMS
\ ` \ \\� �/� �/ \\ \ \ 1 ( 111 Ill r �\\\�\ J(\/ JII I I \ \� (�//\/�/���---- \\ \\\\\\ \\\���\\ \ \��\\\\ \\\\I //// / // / /// / \� // /// /
�\ �� \VA� = == yyA \\\ )�II 1 I ( II(\f/1\/ / i - �\Lwvv�y�yll//(I I V �� A�\ ��/ / Av \ \VA\V\V\ 1 v ��v�vvv\ � �y v\VA\IV ll/ //I /// /�// \////� �vv \V�\�`=y�/y// FN ���R
\ �� A\V \ V \ 1 1) , I I I \ / / /ice - �Vv�) \1\ I I ) \ VA VA\ \� i��// , — , V A\VA\\\�111 _� I i/\ \ )� �// I) A J wV�\)O)1A I \l I 1 I I l / l // / \ / / // l V V A \ \ �� / / / 0 DATE: 10/22/2018 ENGR: SA
\ \� ���/ \ \ \ 1 — I / / / \\\�—�/ // /
\\ \\ � I�)1 / I \ \ II II\ ) / // \> ����� \II I \ / 111 11I\\ /// %� / / 1 l��\ I 1 I / / / /i/ / /
V A v 11 v v _ l/I/ Ill wv v 1 �y�\ V I / / ,- __ - �,�A vvvv ��>I I v \v V\�/�/ �/� A III , �l /�;r= -� y ' w\ I\�_ AIII 1 / 11 l \l / �j l / r vv _ %�
11 I / / � �1i I I / \v \y�'1j / v v \ 1 III I I IJI V /j / — % / / A 111�_�� V A I /I // /// / / / / y v / /// / / FILENAME: EAB Closure Option 3.dwg APPD: SA
\\ \v\v Av v \ /\IIII( \v_=A_z .9 I //// <�`v_ v I \ / / vv\�//�� A I I I IIIIIIIII\ IIII /// /i'A 1-,V�\\V I (Ill I l l\l I I1V� v v� /i/ /'
\ IIII I V A , / A / II V\ — \ \ V 1 (/ ) � I > I ( � / — / V IIIII \ \ I A / / / / / � A \ A \\\\ I I I I I I I ( I V � v � / / / DWG SIZE DRAWING NO. REVISION
v �\ v // A\\ � _ _7,� III \ / A I 1 I I ) �l I / // / / / // v \\\ \ \ I I I 6 / I 1 V v / / / /
III IIII 1� yr \ o / yy/% ` v�� _ � _= �� 111I \ \1 (\ ( 11\ - \ v / / - -V \v ( / I I / // // I IV I (\,� / / v V\\\ \ I I III I ( \ v / % / // /
III 1 II �v > (� �/, �) III III I V I V �// �A V\\ �_// /,-- v vv I l l //// (I /\//r Ir / /Vy-/ \v VA \\\V\VA�III 11 I 1 1\ I \ V v
I v \ vv ) , /� � ��- I \I , I 11 A (� \ / / _ \ \ / I I I �I I 1 1 1I / / I / / / \ A \ V, III I I 1 V A \ \ v v I / /� y - ANSI D
IIII I / y / \�_v , y ll II I�l� I A v v \v l' v 1 \� 1 /�-� vv 1 I // / // /I I / \ \\\ \ I \ \\ V \ v v \ /
I ,\ / \ v \v \ \ v� % _ /ii / /, )/ /,,, // I I I I \v 1 \ �\ v - -// v v / / ! / / / v � , A I I / / �- v \ \ A\\\ vA 1 I I V \ \ V A \ \ v v v v \ 1 I \ v zz��X34�� EAB-3.2 6
�l�lll 1, o y ��,//, /�, /,il���,� lIl i l � A / , I \VA .il�,l������.� - y /�jvv _ y ,v\ \� / l ,lIIII,I�//// I /I„III I I l \� l A \ .�\\vA\�� , A�) - ,\ �\ \vvv _ v v \ \ \ v ( I I v v
m
<
I�
F
INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 1 0
1 1 1 1 1 1
Plotted By: Bowden, Brooke Sheet Set: Roxboro EAB Closure Options Layout: 22x34 October 31, 2018 04: 31: 13pm P: \Projects\CLIENTS\Duke Energy\__7810181107_Roxboro_EAB Closure Plan\00_PROJECT_SPECS\Eng_Design\Drawings\Exhibit\Conceptual Submittal 10.31.18\EAB Closure Option 3.dwg

2
REV, A
F
\\� _ _ _ � � _ , /�� ��/ji= = - �/ � i////=ice/j/� //%/ / �/j % � //i ce, //� %/ ///� / i/ ' // / i / / _- �� \\ \\ I � � I � � I I /
, 75
_=_=== � — J /iii// \\ r%/ % /�� / i//= /� _ �_ IIII (IIII \\�\\\�`�I l//� jam_-�\\\ �\ I\\\ I\\ 1 I
=_= = �=-- ���/i/ / ( / / /j/ �,, \� III \ \ / - _ 1 1 1 1111 I
=� ,/�/ ��� /� /// // %- \ �\ \1 / \\ IIII 1 IIIIII I I
--_ < <� =y amv� y= _%� /� \� �� /// //_ /�, v\ v \ 1 II I I /1 /-wvvv\vvv 1 I Ill V I I I / 1
__ _ �I / \\\ \ 1 I1 I
r� >> I =� / JI//_-/// INVERT ELEV. 415' /- _ \ l \\ \ - _ - _ \\\ I
JJ ��� I / L/=�/�)!_ / ///� /-�% = ice`+=\�_\� �\ \\1 \ \ \�___ �� _ \ IIII\\ I \ \\\I 1 1
__ _ / � / �� ! / cif=ii/ J \\ \\` \ \ \ - \ ( i IIII\\\ � I \\\\ \ \\\ \ l ) I
--__ _ (—� /=//�/ii �/� / /i / /, A 1 �. ��A\\VAS V
_- - _ _ _ _ //// 0 vv_ _vvv l vvvv\ vvvv\
EXISTING DISCHARGE CHANNEL \\ \ \ \� \ \\\ I I I
\ , / /�, �_ ` _ _� ///// v /��� o \ / //�/ �\ \\1 I / \ \\\ \ \\ _\(IIII\ \\\=1
�� 11 / / / �\ \ \ I / /- \ \\�\ - \
/ I ) I \ ___ -� � / � =�fi/� //�� I 1 I I I I I SEE EBASCO DWG G-23011 I \ ,/ice �JJ�I l / / \ \ ll I \ \� ; / ) )1 � \ \�\ / \
/ III/ v� �_ //,�� /�� �� ���� )IIIIII 6I I II I i ( �y ��/�///// /// VII�III�\\� -�\\ ) ((I((I /vA
- / \ %///-� //j /\\\\\ I ( III I\\ // //// ////// I \III )I l� 1
\ // /
�I I/ l \ ` % /%i,�///�///�� \�l�\\ \ \ II _ _ \ \�\ _ //i/////�/ _= 11 I \ ')
III / \/��%/ /�%�%/ \\�\\\\� \\ \I II\ l\\� - �� �, \��� /� /��/ IIII I1I� --- ill l
i� \ —��i\ /�/ / — /ice_= -----
I, I� ,// /// / _ _ \\,\ \ \ \\ \ - � ___ = \ /��; / IIII I I , _ r='�I, y� \ \
/ /� \ �� 4\\ \ \ \\�\�� �// % � — / / / // // / / / \ / /
\ -/ // \
/�� \ \\\ \��_ / )1 ri lip//� �( L \\\ �i
/ i j ___ /i / 2 EA - 72 DIA. \\\\\IIII \\\\ \\ \\ �i i / l= / / ///% / /// I ( ( ( \ �_ — \ - /j / 2 0 — _ i
\ i/ ///// / i// i \\\\\ \��/ \\\\\\\\ ,� l \ I /// // li l l \ ��� \� \ ��� l c,I_=� / /
����/ /,// CULVERT PIPES\\\\��\\` \� / //// // \ \�� ��\ \\\ I m-/ _/ i/
/(l/i�ir/� UNDER RR \��� \\\ \111 IIII \\ * // /( l \\ —� �� \\ /i--- \\�o\ \ � _ ---/ / /
/--) 11 1
/ram==_i, r �/� \\\ \\ \ \\ \ 1 (l I \\ IIII \ \ �\ �_ _ --,, /�\ -,
//i/i�� / / ��ii// EMBANKMENT \ ��\�\ \�\���\\ _ � \ \ >I I I 1
\ \ \\ II IIII I \ __�\\\ \ \ �/� �!/ I I I - - - / - - - - �\
//i \ \ \ D \ \ IIII\\\ \\\� \ \� = IIII I I I 1 \\
��%i //�/ /w\\\ \� v V \\ v v_ - v \ i II 1 I I / / / i _ vA i
/%�/� /' �,:: �% /!! /�/ ///� \vV AV _�__,_ V v vvvvv\ vim,_ _ �Vv vv / IIIII 111 I VAA v --/// = i \v" -- _ - � I )
�i� / -i C / /i�i/i// IIII,\�\ th- \� ���— \\ \\ \\\\\\\\\\`__�\�1 1\ \ \ \\�_/ice// \ I11\\\� \I \\ �% �_/ _ �_�_`--� I ✓
%/� / /'- - PLANT INTAKE CANAL �// - - >)),1 \� \\ ` �\\\�\\\\ _— 1 I I \ �\ %�� /I I I \ \ '� \\ \ = — J� - _ I / / /
��� " ////// /%/��/// ` > \� ��� \\ \\ \\\� - 11 l \ \ �_� // - /��_ /i =`1 /ram 1 ��- -� / / /
/%j// // ///ram /� / /iii //i/ j \ \_ \\\ _—ill \ // )/// \ � � // / \� / /
/ii/i / // �i// �� /i/ / J%/ / //�j / ////////, f /// / \ \\\ \ \��� 1 I l I \ \ \ �i/i l / \ i // /// � �i / / / /
iii/� /ii /i �i� i/ /�iil /jj//i j // / %////j/ // %//_// � �` \ \ � - \\ , - -, — 1 \ \ \ \ -_ - /// / � l // / // � - // i - � � i/ / � ��i _ `� � I l / // i
�i� �N / // �i- ii -ij - \ \ !iii / //% // / ///////�/ %/ p \\ l 1 \\ \\\ 111 11 \\ \ \ ` � =� I � \ / � - - � / l �� / % - / // / / / /
i/�/ice / / / j /i/- _ - - I / // / - \ \ \ \ \ 1 1 \ �\ l l \ i i _ _ � / i / - _
/ / / /ii� ///� i /i /i \ \ \ I \ \ l \ \ \\� Ill / l / I - - i / /_ -_ / /i /� \ - - /// / // /i / / / /
/� //i - / z �j/ / //i , //i /- / i 1 )) 11 / —_\ _ \ / \ \\ \\ _ — \ I I \ ,-,� --� - - ; / / / / / ( /
/ / // ///�i / ti _ =� - f ii/// / / ///// j//` / ��' ii 11 I ( / l \ (/�i� �\ \ \ \ \�- - i � l Il I _ �/ � - -/�// \ � ///// // / / /
/j 7/= /i/% / / (l II� I l / 0 1 — z // _ �j/ / / /i //// / — )� \ 1 (_ /�� �\ �1=- \ \\\ \�\ _\ �\� ��/ I \ — / _ / _ / j / / _ r/ j /
i'—= ��� — / // / 1 l ✓ \\\ \\ I I III \ l \ \ — / / i— / / /
/ r / ///// / � I / �\\\\\\ \ \ \\ \\ �� - -/ l _ / // / / / I / �
/% /ice /// l Jl�)1111111 / l /l � y,>0 � �/ / /ii \� /� / I�I I I / , /� \ ! �\\ \ \�� I I IIIIII \ \\_\_ _/ i -- �l l / // l ((l 1
/ /i/ / I / l jr! I � � �%/i / - / / / \ 111 l� ) III I\\\ \ (\\ \ 11 \ \ \ - - - / / /7:: i o 1 I I / I l
�ii/\ /�//i��/ �/�/ <<o\ /���/11 \\\ \ //�/�/ ��/ / J�/ 1J/l/-III///lI111 ////� \\I �\ \ \ \\ IIII I III \\�` _-- �/� _ �� \ll�l I \� \�; \\ \ \ ( I 1
_ _ / I I Ill i /� 1� _\\ \\� \� \ 1 1 \\ _ - - __� \ \ \ \ \
/ / /i/ii// / (�\ ( //J� ( I ///// /// i�� I /l/�L I /�l� Ill /// �� �� A\\- -\a\ \\\�\ \ \\ \\ ��= =_ _= /--'_/I /i / J ��\\\\ \��� �\\\\ \
/ // \ \\\ \ \ �\ \ \ // \
�� 7 / l / / l / 1 / / / / \ 1 // \ _\�\ \� / \ f \ \ \ - / / / \
C �<�� �/ / /j/i //r� \\ z� /� / o _ /// /� lj /rl(Il �j///� // 1 I �1 �\ �\\� �� J l� \ — = / / \ \\ > / / /
\\ _ �/ /�//l / I\-- \// \� v / //ll �/ � ( l �l l / // / \ 1 (i / J �\\ ��- \ � // / // \ \\ �\ \ \ \ \ \ ///�// \ ✓
ti \_ �// l S� ��\ \�� F, / / /// ) l r \mil - \\ _
\\ �_ J // 1 /I //�0�L I-�¢ r� // �r �� / /I ill �/� �ll/lll��_/l, ////i-\\\��� �� ���\�\) ��\� \\\\�____--� / =i/// /r_�\\\� J 1 \> I I\\\////// /i/, \
( ISM \ L� / l /l l >� / _/ -\� - \ \ -_- -�i / /// \��--�/ / >/
J/// ,/ //l/ ( / i/ ,—I I %� ) /i �/ l,(� � \ \ \ l // _� \r \))) \ -- \�/ s / (II / /// / / _ _ —_— — /��////////% \ \
lo/\ /�/ /r� /�/ L -- �// /- / �J^�/ I\ �� /� /J\\\\\ \\ JI II/// �� \ \ %l/\\P� __�=-��//- \ \\ 1\ ( / _- _-�_-- �// r /1
cc\l((/1 /�/�% / �� 1 //, \ \/�( )(l �� \/ //// _� , ,�1�\� �-�/, lIl//\��J\\ \- �yI>j// � Lc�\\\d� /-- =\i�� _�� /� \ \ \ \ rJ%/ %/ \ \ \
\\\ I //I� \ /// (\\ �`�� I r \\ ��=i/ �/� END PROPOSED \\ \ I(`I�<� �� ��\\\��(I �� / ���� % - -\ I \ ( _ , - _
\ III 1 1 // ,� /� \ I , // /, �\ \ ✓ \ I -/� �� ��/, ^ \= I \ \\ \ , - ,/ \
III o \I I \� \ \ t%�/ / /� 1 << I IJr��\�\��//� \\�\ \1 I / = �\J(/((/�— IIII\ \\ \ \\ \ / /
��\� / CHANNEL EXCAVATIONvi ) / Sri/ \\�\\�' II I(\ \�\� ( \\\\\\tea \ \ / / - -i/ \ \
\\ , I I �)` ��I( \ \\.;�/� /ice \ _ I // / �� \\ \I 111 / \\\� I I� I -\ \ / \ \ \ \\ \ \ I ( - // / \
\ \ \- I I I I / / / / / \
\ ) \ I I \ o� \\ / \ / /// -=�i� ) I ///�/l \\\ \ \\ I IIII �/- \\\I I I I \\ \\\-- \ \\ \ \ \ / --- //��/ \ \ \ \ \ �\ /1 \\\\ ��� �\I \ / - - � \� _ - / /�/ \ \ \ - - - _ / \ I I �� �i / � s =�- \ \ ll� 1 1 I \\ \I I I I I I \\ \� \ \\ \ \ \ \ \ �/ � _ / G \
r \ \ \\ �-/ -� / / [�� /////� / \ \I I I I I ��\\\J -� \\�\�� \ \ \\\\
\\ � _- - \ \\ ' \ l \ / \ \ � / / / -� \ \ �/ /// // / \�\\\I I I \ I \ I �))/ III / \\ J I I I \\ �\ \ \ \ \ \ \ \ \ \ 1 1 ( / / _ - - / / �/ \ \
/r 1 1 1/ J- \ \� \\� -/�) \\ / %�\ /i///�` \\ l\ \\Ill 1I I Its \ z b 1\\\\\\\\\ I/ //� -r�/� \ /\ \
�� ( 1��/////,/�\ �\ / _/ l�%//1/ �/ ��� \\\�\1 IIIII \\�)I \ ���\\�� \ \I IIII \MITI(%/ /��-� \ \ \ \ \ \
/ ( \ v ter- v//,� ( /// - l \V A III / v)Il///v-vA ��I V \\v >� \///�ii/ira �� v� / / \�w�A 1 / 111/� - A\\11\II \ II II 11 I / ��_� A IIII v IV� l / �i �� \ V A v/ \
)// / vvv�� - - - l/\ _--____/�A\ II^\IIII\1 1 /// / \
/� /�=//i/--�� I \\ �1 1 I Cl-= -- \1 \\1 l I \IIII111 / / / 1 \ \ I J//// / /
I / / / /i /i/ii/ii = _ \\\�� �� ) \ / LIMIT OF UNLINED I l l(I(I llJl` _ _ _ �\ C \ Il\\� III 11111�1 / 1/ �i - �� III \ 1\`�\ \ \\\ \�///�i/%�l///�` \ \ \ \\ \ \
/ / ///i ii/��/i/ �� % �� =\\\ _ \ (( � 111 _ I / \ \ \�,, - - - - \ \ \\ \ al 11 \ /ice _ - ���� \\> > ,\
/, /// /\, / ) ;� ), _ _ \\\ \\\\\� \ \\\ / /�-- \) / -� /�/// // / I //�// till \ \ � \ \
//1 /�/�5/��/� 9// /r/=1 %�I�\\�/ / PORTION OF THE \\\ -_--- \�\\\ \� \�\\�\ / (� //i _ - �(� ; ;-L %/ // 1� / \ \
/ _ — q \\_� \IIII/�\ IIII / _ — ( —�/ // /
// ///ii/ / / I Ill / / )// \ —I \\ \ -�\\\� \ ( ////�// — �� \-- j�/i /// j/��( \ �) \ \ \ \ \
\ // / — // , _ �/ \\ — — _� \ \ \ 1\ ( \ M\\ \ / / / — — — _—_ ��/ / // / \
��\ /� ii/ii/ /� / - - ��\\\ \(` �, =��J�/ii - \ INDUSTRIAL LANDFILL - v c(o� � � � \\ 1_ \, \\ \ �\ \ // % - - - _ / / / / �/ I \ \ \
_ ��/ii/i/ / ( /� \ \\ IIII\ \ //i — / — �\ / /� ) h (��� \ _ // / // />)r�\ IIII \� \ / / / //// / / \� �/ — — _ _ _ _ _ j� III \ \
I / l / \\ \\ \\ / / \ \
/ // //i / / \\ \ / /ice / / / ^ ✓ / // /,\\ \\\ \\ \ \ �\\\) / / / /I _ \ \
/ / \ /// -- / I ��/� / / < / / /
\/i//i /i l `� �// \ /� \\�=_ �i��— �_� �� ZL ---_ l \ / // ///i// \ \\ \�I // /ii% //j > r 1— — _� Ill/ c—� \ \
/�iii o� — III \\\ �\\� — � // � / — ( / / / /i \\\ \ \\\ \\\ IIII\ °/ 11 \ \ \ \
\ / /i/i \ \\ \ l / / 1 \
\ \ \ a / 11\ \\ / I ` / /�� \ \ \ \
//// \\ _ — _ \ \
S / / _/� \ \ — \ — — — // — / \�\ \ / // \\\ \\ IIII\\
>> /%_���� /�_\ \ \ �/� _--_- - /__�\�\\ \ \l ) \ _�� I (I ���i II\\\� \ \�\\ IIII , I /�i / I
i� /- /// \ - - - - _ - \\\ \ \ _ / ( �))/ I I > 1\\(� �J \\ IIII \\� IIII\\\IIII II I I I I I / - / \ / 1 \\
l/</ /ii/�\\\\\\ \ ��---- --- — \�\ \ `_ / / I \ \ '� IIII 1 / _ \/ (IIII �`_ \ \ \
1- ____= = = = —__ -\�\ \�\\ \� -1 �/ / IIII /// � 11 \\ \\ \
- ` / \\\ - _ - - - __- \ \�\ \�,, � \ - I \\\\� //%�\\\= IIII \\\\\\\\ 1\\I�1 1I l � 1 \ \
\\ % \ \ \ ��L� %/ / _� \ IIII\ \ \\ \ \�\ \ \� \ \ \ I \ ( II \ \
�C < \"IIII ��\�`�\�\/1 /%/�/)/( �/ � -' ;,�� - �_ \�\� \�\ �\ \/ / \_))\ < %_ �\\\\\\\\\ \\\\\\\\ \\ \ \ \ / Ill I \ \
\ \ _ \ / / _ - -�� `\�\\ \ \\ \ ` -�_ / \\\ \ \� \\ \\\�\\\ \ \ \\\ \ \ l / - = 11 \ \
<- �\\\\ \\\ \ \� \ ( /) / ---�= Tf — ___-_--�\ \\\\\\\\\\�__� _� \�� �i/�� \\\\\�\ \\\ \\\\\\\\ IIII \\ �\ I I / \ \ \
i \\\ \ \ \\ l 1 / ti/� — _\� / / _— — — _ _ \ \\\O— 4� — \\ \ \\ \\\ \ \ 1 )1 II \
♦ \ IIII\\\ IIII\ / // _ �_ �\ — — _ —_ -�\\ \ \ \1\\\\\\\�\\\\�\\\\��l
��,_� �\ t / \ \ \ \\\ \� \III I ,// / /--�.�'-_ ��I (�� _ -- -�\ II� :_- \ �_; �� \\ \ \\\\���\\\ \\ III \
i7 )\\\ \\ � \\\) l / /i/„= 4� \`��^__IIII --f- \�\\\\\\ \\��\\\\� \\�\�l / II I l\ /\\ \I I( - \ \\_�-- \ \ , \ \\ ) \/ 1 / \\ \\ \ \�\� I I I / // / / /, - ; — = ' (III (s _ �\\ _ \ \\�= %� /i I \ II I _ =\J �// / - ;\�\\\\\\\\�\ \\\� \\ \\� \� �\ \\�� �- (�- I 1Jllll Il \ \
\\ / I / 0\\\\ \-\ \ \\J�l \/ //// /� — _ _ _ J �_ IIII\\ \\�\ — 1 I \a\lf ��\� �\\\\\\\\ IIII\ \�\\ \ \ \� /� l \
/ \\\ \ 1 \ \� / // �// /�— _ _ _ — _= \\\ IIII \ \\\ ' �ii I _ — r\ / �— \ \\ \ ( Il \ , :\\ _ ( I(/ // \
/ I C c \ \ / _\ \ \\
.\ \ \ - / \/ �/ //� / - _ _ / IIII - -\\ IIII\\\ 1111/1111 I /� \ \�\_ -
\\ I \�\\���` \ (j//�/� ///i/ii/� - _ '� __ _ - ��5 \y,��iyR\\\ \\ \ /IIIIII/ _-= / / \\��\\\� \II II r -/ ) \\\ - \\ ) J IIIII \
\\\ / \\ �1 I % / /// /// / /- - - - _�_ _ _ _ T/IIII\\ \ \ r\� \ I \\ �I I- II ,I� IIII = / > > ( I \ )IJI�I \ \
1 \ _�\\ / /� �.(/ :.�'/i//' - � \\\\\\\\\ \ I I /// ' \ / \ \�111�1�11111I I III I1 - _ I I o
—=—_---__-- v vv III qll-,_—_ rr
�- ) I I� \ lull \
-\\ \ ♦/ / /// //////�� - \��\ IIII\\ II /� /-\ \ (IIIIIIIIII IIIII / I JI I 1 \
/ /IIIII IIII III I h =
\� J� ,(>/ )> / // //ii/i�///i/////%/' LIMIT OF LINED `� �'�\\\\\ \ \\( o� \ _ '� / -- IIII/ l l I III - / �// J \ /1
\ \\\ \\ \ II Ill I ll �I \
/ - � / �/'///%// /////// " � vv\\\ `�i►\ \\� ry A l I / J A I ) l �Il�� Il111 / / - // \
-;// / �����// ,///�//�i///�lI ///��;--- PORTION OF THE vvvv/vvCvvv vv v I �I �, /Ill/III Illll ��,� /// /
i_ / 1 I III ll Ill // / \
/ J \ �r� / / / / / ((�( / // /// // ;�\\ V \ ////(� I I ( �� / // C (�� Vy
/ /- / I I / /� //�/� \\\� \\\«/ < / / r/, INDUSTRIAL LANDFILL ' \\\�\\\\\\\\ IIII \\\ \ I APPROXIMATE /ii)l/ill llll� // / l - \\\ �\
/ / l / / / i� ( - - - -- l \,A\\\ 1 /l l I v _ �l l l / _ _w;�� _ _
/ I \11 �� \\ \\�\\I\\� i/ / IIIII 11 1\�\\\ \ \IIII \ 1 / �� ��/� / /II II � )l /ll / l l / /// l I I -'/ '� r \/ \\ \\� \\\ \ __— = ti IIII \ I I LOCATION OF_ /iix/1 l��l \/ \ \� l �l/ // - �� AI -\
I / I r=\I l )1�� \\��\\\\\a I/�/;_=--_ 1111)1=111 IIIIII IIII\\11J\1)- /�/ //ll/li// ^Ss//� -/ ��- _ -�1
I I / /l I /I\\\ \\\\\\\\\\�\\\ (�/ �� I I I III (� IIIIII///� I I I = /i///,� // / i Jr� t / // / / - / S \- / /
(� / ) /ll / / A) \ // // ///// / /
�\ \ I // /�// //f��_/\\\C�o\\ \\V�\ 11 l I �I II IIIIII I I / / f / - -
`��\\\\\\ IIII 1 / \ I I �- I III l I I I I EXISTING WEIR/ ir/ \i/ / /
\� /� �/� l� //�l/ll/ =1\ \\ \ \ \\ \ \ IIII ( \ \ t I 1 IIII IIII I 1 - i/ �/ ��! / /i / _ /- / // / 1 I
I 1 \/ / /// ���� \\\\-\\ \ \\ \ IIII � / l ll IIIII /I I I/ / -\ \ � / //!(// / / /// J/i / � �/ / 1 1
\v / / ///�// v/�r�\ \\V\\VAV�\\v\11 - v / I� l/l III I IIIIII I I -vim WITH CREST��// /%� // �� / / ///
\ \ \ h \ / //��// j/ / /,/,/\\� �(\\\ \\\ \\\\\\\\ d\\\\ �/ I/ ll Ill IIIII III IIII I I I I / I / /� J11\(ll//// /�/i // �✓ �/ o / / / // ¢
\ \ � ) / /ii� �j�/ // /� \ \�\ � \ \ \\\ , 1 II I I I I l \\ - ELEV. 465' "' //%/\ =/�I I/�// / �i/ r/ / / / , / / / " ¢
( / // / / /�/ // \\ 11\� \\ \ \\ \\ \ \� \ \ ♦ I I 'll I IIIIII III I I III II /l \\� // r ` I / /� / d / / /i \\\
\ \ \ ( I /�//��/� // / // // // I \\\ A\ \ IIII\\ \ \ \\ \\\ ♦ II II IIIII I I I I \\ / �i� ,�, / i////��- / / / / / / /- \
I r \\L / / /ii//////� \ \,�\\\ \\ \ \,IIII\ \\ \\\ e1\ III II I IIIIa-(IIIIIIIIII II I I I j�,I IIII \/� //ii/�i/ii// /ter/ii/=i/� Jjy) /l /�/ /// r / / // / /�\\\\\\
I �I r_ \ / // // 1�1f'/ /�// // l\\\ �\ IIII\ \\ \IIII \\� / IIII IIII I I I I I I l�\ \ / / / ( �i/ % \����I I I /ii // // > \I /i///��/ /i/i / �,/ ,—/ (/ /// /Asoi / / ', // / �\� \ s ,/ //i�// ///� /"// �A///��\-��\\�\\\�\\\1\\ \\\\\\\\ III IIIIIIIIIIIII IIIIIII III , IIIIII 1 �\\///1 i//i�/i //i/ ii�/%/ // // �/ / s-4 //�� �) \�A-�/-S( l //1_/ / ,i //� /� \�\ \\ �a�� IIIII \ \ IIII II ,l� III III /III IIIIIIIIII III I I \ �i ///� // / /�//i /�/ // / / �/ / \\ / / irk r// _ \I I// I `\ /V
k %�`��/-// _//%�//i��/� //i// /� //,\\��\f ��\ \�\\\\\\\\\�\\\�\� \ I I IIIIIIIIII1111 IIII I IllIII/li►�IIIIII� \\ �i�i, I///� �/�/////�////� / // // s ( \ / (�/�///��oq//III (�r/� \�\\�--_/� // / /" / / //� /////i /r/� \\\\ \1 �\ \ �� \\ 1 I III I IIIIII IIII IIII ll \ / /// i/i///// / / / / / Igo __- //l Il I / \/ ll// � �\\\ \ ��_ --__//// / o%/ // //i/ // / \\\�\ \ \\\\\\\\�,\\ \\\ \ ! II IIIlll llllI , III 1�►l �I I \�/ /ire/�/�/ // /�/ // / / / l _` // / / I/(\ / // \ \�\ \ - - _-
/o/�� -///�� /�/ , /� /i///i I \���� ��� \�\�\\\\ \\ IIII \ _ I l III ll I Ill l ll lull l,llll I I I �II II/ \ ///ii ///i///i/ii///�/ I ;sue , __ _ / / �i I I I \ / ///�/� IIII\ \ - - -�, %�
//,/ 00 /�//%/� /i //i/i/i//=/i�iii/� 1 IIII J\\ \\ IIII I I I IIII / l I // ///// / /// / \ --- //////// / \ \ 530/// //� \ \ \ - \
- lam ///ii/i/ /, /i�// \\\ r\/�\�\�\\\IIII\\\ \ ll IIII /I11111111 111 I IIIIII ��/� /// ///////// //o ( O- __ r //� //�IIIIIII 1l \/ ////I\\\\\\\ — ==�i�=
/,/ //�%/� //// /'/ / / \�\\ IIII\\ IIII\ \ �'I1�1 I IIII Ill/ I I I I 11 11l ,�/`/ii/ //�//l//ll/ll�/l�I l (" EAB EASTERN - //!�///l�%j� \\\I IIII \\\ ///�// / \\\\\\�� = -1 ���
i/////� //�/ / // /� \ \ IIII\ \ \ \\ \\� 11'� 1 II IIII II �/ I I II II r I �/ /l ( o ( _ _ -
///i/i ///i /ii/// \�� I ( �,\�\\\� \\ \ // I 1 \ I I I III II ////� l /IIII/I( it I I��l\ / f✓/jj/ll�/ IIII\ \\\ /i // lll�\\�� -_ -- /\\� / / \ \\\ II IIIII ii 'I I I IIIII I / / I/I/l 0 1 EXTENSION :\- / / // � \�\ \\ _ - // � \ - _ - //
// i ,% ,�� , / / /ice////// / \\ I IIII \\\\\��\\\\\ \ _ - 4 I III III I I I I III I f III /full � \\�\ _ -__ _ _ / N/ / // \ \ \ �i� /l/�lln\\\�� = - = = _/ \\�
// // //�J / /i /ii //i \�\ IIII\\ \\\\� II I III I I I I IIII //// / o Il. _ �ti//�//�/ \ IIII �\ s2o;/// \_- - _ /
/ / / / //� / \-i / /i�j�/% \� f \ \\ \\ \ \ \\\ \\ I I II I IIII IIIII III I �lil I I o I �\\ \ _ / / /// \\ \� ` // ///// // n \\ -
// // ll I I I l /I I I 11 I I !'ti I Il-,\\\\� _= IMPOUNDMENT �\ -L //// / �\ IIII\ _/ / I \ \�- „_ \ _ _ \�
/i/ //i //�/%/// / /� 1 \\ \\\\\\ \\ \\ \ I I I IIII I I - \\_ l� \\ /- i///1��11 \\\ -
// /// // /// / / \ \ \\ \\\\\ I ll I II III III III IIII III I�I I I I I III I \\ / l t l��\ _ - % �= tr- ; `\\\\� - �� ��/ /�// \ \ \ s ��� / / _ -
////< // ii /,i � \ \�/-�\ \� \\ \ II II I III I I 1 II II I \��\ _� \ - �z // \ IIII �o// (\\\; _ i _
�/////-//////// \ ���\� IIII\\\ \\� /' o I I I\ III III IIII J I I IIII I I!I \ \ \\��� �/i \� �� -- / / \\ //l� -\-- __
////�/ /// �i//ii/// / l� o \\ )IIII 11 \\ \�\\ IIII IIII �I II I / II IIIII II --\ _- I I\ \; \�- �� /IIII/ �\ '-
�I II IIII I I I I II �, ,_� _ 11 \\ \ - ��i///\� ,/� �_-
/// /�/ // I \1 II III III I I I II III ,-_� /�\ ,I I \�- - -- ��/ I \\ - / / /i ---
I I \1 \ \11 I I IIII I �� - I - = /, / _/
/ /I _ - J�/IIIII (_ I � \ . �� tioo f � � , = =
//// ///jiii/%/i' I IIIIIIIIII ���,�\
III IIII IIIIII III III II II II ��_� _- //�\�- / I�IIIlIll11� --- - /fir /i��/ _-
/ �// III / 1I I I I I I I I I I I l l� - f/ �, , /i/ // _ _--
C //// //// I I I 11 \\ a I I I I I1 1 I II I I I IIII �� ���� _ \\ -__��- EXISTING WATER � _y/%// / -=
I I I I I II �I / I I I I IIII I I l l I I III / / /� /// -
Jam'/ !i/////i//i/ 1 I III I m I II I III I I I I III IIII II \ ��= 1 _ II `1 J J� r/ ✓�J //ii/,//� _ --
/_ /// II III I II II II II II I I II I I //(l�l�\-�✓ ;� I//���%�%/____
/// III II I I I III III 111 \ I dI I I II II II / < \ _ LEVEL SHOWN AT / __ �// //
/ / // I I111111 1111 III 0 0 I IIII III 1 I II I III I� � I 11 I I 1 10+00 �/:�1 ��/� /�/i/-%//� _-_
/ / ;ELEV. 467 VARIES / /� /� /� / / -
/// /i/ / I I I I l A 0 l 8 III \� — — �—
/��///_%/ r` ` o IIII1111111�1j1 I III I II -I N loll I I I \\ -,� \� _- ^ %�/i�i�/�i/// / =-I
////_/ _--- ) COS lllllllllllll�ll �I II 0.2 I II �I III IIII I ll �I 2,II I� o' I v \�� -- ////�/� W,//��/ // / /
/// --- �'� I11 I I III IIIIIIIII IIIIII IIIII 1 I II ° \ J Ill (lI//////��/ ///// /(
�� � = I== -I I ♦�40� II/I/ /II 11 l II I Illllll I �\���i� -
--__-__ ��� =_col J I //�l l�l��/ �l I I I I I I P� I \ \ IIIII IIII 111 III II �s v �_ l/ �ll ��/�/l�////lv( I�(i , I, A �
-- -- - ll� / I - III I I IIIIIIIIII III \ I IIIII II I I Ill/ I I 1 pp \-� v �// / / //�l 1 \ _ _I
C— --- - - 1 v l�lllll II( \, _y�,II II\ II I IIII III\\\IIIII III I �IlljlII( > �// / //iii�i lI I \ �,-vvvv_' -
\ \ IIII / ll�\ = _ _ -fl l IIIIIIIII I IIII I IIIIIIIII II \ \ \ \�-\ \�,_
/ / (( \\ \`--\ \ - —
\ �� /�// \ `_=-- __-_1/ III IIII IIII 111 II II I III III 11 ♦ v ( // I ((((((��\\� \\�-
/ I\ �� � _ =` _�, \ //// / \ _=_ _ -= --__�� IIIIII III III I I I I� �� _ 4 _ w 111 -/ l\ ��\\\\\\ —\ \��
�- /> --= _ _ ;���_ //// - - # _� I I IIII IIIIIIIII IIII I11 IIIIII '0=�- , ��\\\�\\\\\_ _,_\\\�_-__\
�i\�_ ____ \ / /L _ I I I I \ ___ - = v IIII
�- ,„ - // // I III I I I I �_ �, \ / �\ - I \
IiI
_ ;, _ ���� \ l/ lll(�_ = — — \ __ �_ III I I I111 III II 11111 III l II I IIII l / _ _ aao \ z ������\\�\=j 11� \�\ , _
_ ,/ _ �_ _ �_ _�__ \ \��LG = __�_— _ --_ _- I I IIII Il II l l l\ / _�- 490 = - `�-^ _ - p �\\\\, l\ \- \\
-��� _ =_ = = = - - = ���_ = = ==-_ = _ __ =_ — _ I I I III 1 I �II III\ /i -_ _ _- - _ _ _ L) _ \ = 2 0 1 \\\ �I\\\� Environment &
— — — — � _ t� _ _ — _ - — _ I I I I I I I 111 \ / / — — — 500 — \� _ �\ p 5+ \ \ /n \ \ — \ \
=_ _ — --�,-=—_= _=_� ;, — — _ —= _ _=_—__=_=__=_ �_ __ I I II I I`�I 1 // _ _ — _ \\� \� \ \�\ ��\� \\\\ Infrastructure
__--_——�����— \ — _�--_—__ — — __ _ IIII1111 III II\1 // i��_— \\— \�\\ 1 \ � \ \
_ _ �� - l L - I - _- _ - - II IT'�� II \\ III I IIII _ _ - �\ \ \ \ ) ___ -� - W \ �\ 4021 STIRRUP CREEK
---\ \� _ = -� _�_ ____- _= -Il I III ////ice- \ IIII\\ \ \ ���\\ r�=480 � �\ 4\\\
_ _i _ \ _ _ A-__ _ - _ - - - __ _ � I , I III / / - - / I \ \ DRIVE, SUITE 100
-- -- -- �� � _ - _ — =- _= _ = —== --_ l IIII\ Illllllll I / I I ll / 520= \ \\� 11 \ I\�)\ I'I - /ice% -___� /_ � - ` I �\ DURHAM
lill< _ _ - - - _ _ _ = _ -'� = - = _ = - = _ _ _ - = \IIII 11 \\ / - - / / ) / )111 IIII (1, ; 490 _ ___ — /% = \ \ /% �~ q l [phone]
==-- - � �-,� � --_� -_ � - / � �� �111111 II III\ IIIII I / )ll ////-_ I I1111 I�/„� /
_ z�- / �� - _ - f / / / _ - -! I II IIIIII \IIIII 1 1 I l// %-% /Jllll 1 III I II I I / i� b - =� \ \\\ /// - \ Z -
- - - �� / / I I 11 I I, / \ / / / I I = _ - _ �I II/1/ // U L�iCENSURE 19) 1
< / / / - / � / / / / 4/ / �,
/ / � / I III I I ^ I I I I 1 1 \ I III \ \ \ \ I / % /// /// - // / / \ I I II I - - �- \ \ \ lll�// //� \\\\ . \� INC ENO OGY:
�_ _ vvv ( \ ( I - �� / / /ram I VIIIIIIIII/ III III\ III \ \ V A ///�//�//�j/ III Ill IlA\ I�/ �510- — AVAIII ��// //- - -: \yv _w�__ NCGEOLOGY:C-247
_ �1 f ) v / / - / / -1 / I I I \ \ VA� \ I / ////%l �_ vvv I I) - _-- wv\\\ \\l////%//� yv \vv /
11�\�vVA\ \ �_� --o h/ \ / / /� �// /� // / /N _,- �I / ll- VllllllllII 1IIIIIIIII 1 V v\\y \ V A //)// _yv V� � IIIIII111II/�/Ill (/// 520_ -__=;v\�1VA1A� //�//� _\vI, � / \ / < l I� 1 I I \ \ I \ \ \ l \ \\ I / / — — _ —_ \ \\ \\/ — SEAL
\ -- \ <, \�\ / -I � \ .\ \ I III III II \\ \\ ��a Illlll�illl %_- \ /_�\� IIIIII I III Ill _� \� II I1/// ,/\\\\\\ \
'�/� l V A1(\ , v ��l- v v ♦ v♦ v III III I II Il I I I \ I I vVA v �111 111 //� 1A A\ I - _v v 11�1 IIII I ///�/ -
� r � v ) V ) ,� , t \ A v I I - I I 1 \ 1 //= �- IIIII\Ill � VAI ll l \ I I I I I ? 530� - v v I1111111 II \\ VIII /�/,- � �Avw 111�11A � / �/ i
-���-_ \ \ f \ �- IIII III 11/ IIIII 1 \\ 1\\ SEPARATOR \\ /� \\,�- \ \ / v- \ 1 I \ Ill/ \ \ \ �I
�I lll�\% —\V` \ -- �-� -__ \_ \ \ II r I 1 III II II\ /)Ji /% \//ii��\\\ lllllSI\111 II Il ( \� \ \Illlll�l II\ \ II II/// \ \IIII\ Il j�
\\\Imo 1 ��� = �; �\ \ \\ c-=-�.� --_** -A APPROXIMATE LIMITS �i1111 IIII IIIIII IIIIII I /'//i ,BERM AND SOIL\ ,J \��\\\\\\\\ \ I \\IIIIII 1 II \ \ \l1 Illll \�\III(�I11 / _ \\\IIh�\\\J�(l //i
\ / / _ �_�\\\�\ _- -- - - / I III IIIII\ I I/ / \�/// �\\ \ \\ IIIIII IIII \\ \�\ \ \ \ \ )IIIII \ �I II II //�\ \\\\\�\�\ II
I�11 I )� \ I//<�� _ =\� �\ ��\) \ \\ �\ / / / � �, IIII 11 11 I / I I 1 I �/i // /, \ �� \\ \\\\\\\\�\ ! III II I I \ ,` \ \ III I I I \\ (I I I I I I I / / \\ \ J I I I I
\ \ \�� l ORIGINAL EAB / 1 III I I III / / / / FILL BUTTRESS \ �� �\ \\ \ /III ` \\1� \ I I I `(`� \� \ I IIII / \\ \\\ I I
amec
foster
wheeler
III I \\\IIII\\\ 1\ \ \ I \\ \1
\ \ -�i�i= ♦♦="�7/� _2�_ I i / / / // / IIII Vilillill/IIIII III \I I / II r/// \= \\\ \\ III \ \ \\\��\�� \ \ \ 1 = \\\\\IIIIII I I \ \\ I II I � I \\\_- /� r// I I� LOCATION —� \ II \1 \ _ —\ I I I \ \\\ J I \ NOTFOR
\1 IMPOUNDMENT & III I I IIIII I I I / \\ 1� I \ \\\ \ \ \ \ \ �(\\\ �\ \\ II 1 I \ \\\ \ I \/�� ♦ / f(�/ �_� �/ - / / I III III I I I��II 1 ( I \ \
\ \\ __ 6i / / �--��r/ I I P / - / \ \�\ \_ __ m� \ 1 \ \ 1\ \ \ \\; III 1 1 \ \\\ \ \ I I
It'll�, 1-� I10// �r����� �- /-- i CCR BOUNDARIES' //I( 1I ')II IIIII\ I /( // //�_-- ��\\ \\1 IIII J\\\\\�\\��� \ \ \ \\\�\�\\\�\\\\IIII \\\� JI \
� / / II IIIII II I/ II III _j IIII I/�/// / / 540— \ / / � /) \ \\ \\\� �\ \I I `�` `\`\\` \\ CONSTRUCTION
/ ///-� //\ I' I I \ _ I ( /_- __ \t 1 I /// I \ \ \ \ 1`D�� \ \ \ \\ \\\ \
/ / -/ � - IIII I I I \II 1 \\ III // / \\\ \ 1 II I!I l r / �/� / / L \ \\\ \\ \
i/i- N i i � i - -- \ II
J�j/ % /� \_ // / / /I I 11,
III IIV III III �\ \ I\ I I / \\ \\\ I\1 �I / \ \ \�\ \� \\ \ \ \ \ \ \\ I \/ JJr�//�//�//// �/ -\ II / J I - IIII III TI III \ / IIII I III / %/ \ o 8 o 0 (D�6 II _ \\\ \ �\\�\��\\ \\\\ ,\\ )li\� /
--- /II -I 1 III \V� \v I I I , ) o ��� (( v _IIII \V Alcvvvv�, --- -- / \ _ \ \I IIII 11 I / /
/ � _ / / / / I /I 1 I I IIII/ I I Il � \ (\I ( ) 1) I / A 08/09/2016 7810-15-0347 CLOSURE PLAN DMS DMS BCL ILL ILL REVIEW SUBMITTAL
ABSAT ISSUE # DATE DESIGN / / / / \,
II. �. �I II I IIII , / 11l_ � I ' 1 . 1, ( I 1 ( / REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR APPD DESCRIPTION
OHE
LEGEND
APPROXIMATE LIMITS OF CCR BOUNDARY
LIMIT OF UNLINED PORTION OF THE INDUSTRIAL
LANDFILL
LIMIT OF LINED PORTION OF THE INDUSTRIAL
LANDFILL
SURVEYED POND AREA
SURVEYED STREAM/CHANNEL AREA
EXISTING TRANSMISSION LINES
DRAINAGE FLOW DIRECTION
PONDED WATER
REFERENCES:
1. ASH BASIN FACILITY BOUNDARIES TAKEN FROM SYNTERRA, COMPREHENSIVE SITE ASSESSMENT REPORT, ROXBORO STEAM ELECTRIC PLANT, SEPTEMBER 2015 AND PHASE 2 1 N
RECONSTITUTION OF ASH POND DESIGNS FINAL REPORT, REV 0, JUNE 16, 2015. BOUNDARIES
ARE APPROXIMATE.
2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON APRIL 16, 2014 BY WSP.
•• • 200 -•• FT
TITLE
ROXBORO ASH BASIN CLOSURE PROJECT
CLOSURE OPTIONS EVALUATION
EXISTING CONDITIONS - EAB EASTERN
EXTENTSION IMPOUNDMENT
FOR
REVIEW SUBMITTAL
DUKE
F N E RGY
'
SCALE: AS SHOWN
DES:
DMS
DWG TYPE: DWG
DFTR :
DMS
0347
BLLL
DATE: 09/119016
2
ENGR:
FILENAME:
REAB-0.1.dwg
APPD:
ILL
DWG SIZE
FIGURE NO.
REVISION
ANSI D
22"x34" REAB-0.1 A
0
m
<
0
F
INCHES 1 2 3 (TENTHS 10 20 30
Plotted By: Bowden, Brooke Sheet Set: EAB Remnant Pond Options Layout: REAB-0.1 October 31, 2018 03: 06: 25pm P:\Projects\CLIENTS\Duke Energ y\_-7810181107—Roxboro—EAB Closure Plan\00—PROJECT—SPECS\Eng_Design\Drawings\Exhibit\Conceptual Submittal 10.31.18\REAB-0.1.dwg
10

Plotted By: Bowden, Brooke Sheet Set: EAB Remnant Pond Options Layout: REAB-2B2 October 31, 2018 02: 30: 40pm P:\Projects\CLIENTS\Duke Energy—_7810181107_Roxboro_EAB Closure Plan\00_PROJECT—SPECS\Eng—Design\Drawings\Exhibit\Conceptual Submittal 10.31.18\REAB-2C.2.dwg

2 3 4 5 6 7 $ EAB 4.1 REv 1/15/19
// /j/ \ � � � % r //� � / // � / � — � /�o � — v A) \\�� � �� //r�-. -✓ /- \ v I / / i / / J// \\ `, V (\\V I �� �I ,� � �/ /�// / / /l I � — _ � � � II Il �ll
3H0Nk
3Ho // / �I�� �/ / �s��� — �-- - _ _ _- vv\d �o _��11�11� 1V« ���I���� V�
���� �
OHEx
\\ III III \\ \
A IIIII\1I1 \ \ I( I���///%�%%/�/
'i
I ll�l
jll
-//
l
//o��
F �\\\//��\_lz\,\:�1\I\a/\�-_\�,�\�v�\Iv //,\v \II��/�I I1�-,,/I/1\ // \- �, I1r1/j\ ,�l�IJ/\ (v I\�/�� \v\ \A\v\II\I\1/� /// — (1" �\ I II/_vI\ \\( V \ �/I,��I ��I�,/I\ I /_ 1( \�%\v I��- ;Iv �//,I�-I1 �/ ��/_�(v� �/�I/II\�I \I// \1I 1� ,I \ / ��/I,/I /_i//�%\��-A \v ��(I/1 �\ � /\-IlV,/_\ / �\1\\v/o (�/�I �(%i/\/I rv�Iv\ ���/�Iv1 / �_ �l-/1_/ i \ � /_�/ I�\ \,\- -b/_ /,�/��v�� /� // v/� I\ Vv�/'v\—/ /rI I/\-_-I1� /f�-I� =// /�v/ o\ /I-//�_ /�//� I� \,/_ /\�/I I(\/�-- / j\/\/�,i) / I ///III� � 1\/ \\ I —�( /_ �/i�V// \/\ / III/I \ ///1 �-\-i Ii��I�I— �v/I /l�'II _ I// o�I�I� I_�I(\I/\,Ill\V %/I/��l�^i�/\ III I II////1/a/�l� IIIII 1III/ /IlI\II/l = / I%V�/I, _ —/lI//�I \—/V\Vf I/ - -IlI\i _� /�l/� /�I_I-l1 =�,I/I /\I- �I�v I/ Il�/ I/ I/\V lw-I_I\ �_\ '/�/ /1� l - � �Il�\1\vJ -- 1 � V_V� IvlI 1 / �- /r\ /�l -� II AI� I/�v\rI_III - /// \I\ \v`A /-V I � Iv\- / /-� _1_l�\ \ A` A /I/ _� / / ✓// V \- / v l (\ ,i -- I _=) �I //\� Vl-/ /, 1I/��I/�/ iI'//I I/ � ^ 1/ -\ ��_\/I//L /�V� //�//�I �I i /-�o/�\-�/ ��/� / /�1� -1\ / �v/�I �I/ \ / \/ A / \ � IV_ /_- �/�/v\I�/��/ II i\II%/ /� A//.�w,\= / `\,_ -/ _\ `\/l-\)\ 1,r/ / —� \ I/V_ I-��\ v/ �� / --v r/v�v� /'� /\v,�i _/ \ / l �/1\�%o/ \ -/ /I�1_\ \- (/ � �\_ // _ )�// PQ- (�_ i/A�/�/vvr'i /'� V -�s ,/ \ /_\ �\( "\� ��\ / V /-_AI\-V� /�- � ',_-I \ /r A -\ � //\V/�_/\-\S //\�\I -1/\\ / / \-\_ o17//v vs\\/�\\/\�// //\\� /\-/// / \i�_ /\ _/1\i\\\ /_/\/ I - 1/I\/ \ �/V y\ /�I�f\�\�//fI/v- v=\ v�v /\_\//v �,// _ --_�l_�\�I)II�Iv � �// _v/�\\\/v\I� Z/ �b _IIa \-iv \ y\\/��/� ��' \\z\'v�s\�/\v \ I �\`v\- /\ iI vvI \- l�� � \ ��Al/_ 1'v \� vr\\_ �� 1�) �/ ��I_4 A-i - \z1' //_/v1\i\�\(vI I\/=-Iv\_IL\\/v1I�_ v/I � 1 \� � 1�V_/Iv/i/ I \ 1I I / 1VIriI\vI i 1\ A� \- /1 , \1 II�/\I r _�\1 / -�v-AII � II\ �I\�%v�\I \ A� i1II I I /sv II\�v\ I\�_\/ /rII' ���� w�h\\ ��;�` � �J\ I \III�� /\ \_v 1 /\\-IfL��1- \I7 \\III I� \ �AI�1\\II v\� lII/ II�\1/\I lII\ I /II�I II - 1v\1—v) -IIv\I�1I-I\�I/J I�I11 II� I�� I\v\�\II�� 1\�I Ij--1I\I-I\/ ✓-I\v�LI�--I-I/ I I\\\ I vJ �-I\I/I'/\/%/ //\/�/1 �Iv/I� \I//I I l��)II-/I�\ I�\///v/�! D-J--� v//I\I �\ / �I/\/lv/I \�_ \I/i � I//j,-—'II / � \�_ /I vv(/ 1/ �/ �/v/-//1- /\l//// \1. // i/ /( j `// , //-/ `/�///�%/ 'vo\/I—_ //�/A-v /�< v / - / /// /i/)//= _,�-// v\ /v V��/V\/ \ I vv �//�l/ /\�v- \//�i_ /I\//� - \�/\l///v / / �/ //A// \ // -I— �-//\ ///,/ %/I v /\ /l//\I//// //(/_Ij'�vI� 1 I/�v/- ,/IlI/�/Ij//V// IIv v/im/l\v// I/II/--/ / jA I///=I\I/j i �//I/I \ I/�//�i— //%\/i V\/I/-/-i_i/i/I/�/✓-(l i//\ \\// I/l / /-v /)\%j/j l// ,/ ✓ /l v—/v//� = //�— >♦/ / J� -/ /v\/% A)_�-�/% �C_// /�vj//j ///=V/�_ -/-/ \ ��A—v/ v/ /v//�-,�V/�/� l/ /_///V�/v 1l \//� / I \/l/\1\vC_/=-�v//;AA/ \�_���v/ �_ v\ \o/ /\.�> -v \���/1/l/_A// ASv\�i j � v/) /I\ /\_/ \ �v/�\) ��\wlI�v1/ �/\\// —/ /—//�\�II �/ I\I / I�/ \i/1v/ 1 �)%1 �)�\vvv/�/�1\/vi/V\II /1// _///��i/�\A 1 /iIrI \\/v1i\\A/l///\///�v/ v\IiI� �/ /\//'b // l(1 I/�sI/p� %i\ //i/v1I�_\/%_Iii l_\ /\r/ ,\J \\/\ _- 1lI/I—/i\�/I, 1 �\)�A/\1i� \r)//o\ t/v)V / I \\r �I��/I�\)am1\i/\/ -\ \ \///J1�v�/�I/ \I / /-\ v=\/ \J v�I � � / \ /\/ \i/�/l\ I \�y�/, J/�/,,j 1(I� �- /)�\I - 1 l— -I� /'�l�_/!/ / l v_ I- vil/� l �\/i/I-�1 l=/--' �%`_� //_l/' I l_ /1lJ�J�vi=\/l /_\1� �l/1/_ /- /1�/I �_ / /�-/\ 'i< l /�//��%,—///i/=—/l--_ _ \//o \_.;—_\ -/� �_\\/ -/�\ ---_—\_ \_/\ /=-_�_��\ /'�\ ___\ / 1 \v _/ \\-\—_�— 1\\ ��\\/ —\� \1 / -_\_/�\ l �A \ \/\ -/I/\ �I_ / i\�-\\\)/ 1 -_ ,�/ �\ /\\ \�l-_ '/-�11-IiA_/l_ \\-I/I_/\/// ) I \�\ \—�/��\Ivl �(\\/ /\w\//A�_�//\/ /l/i_(/ /=\J�_\ �i;\\ I -I/// \\ \\ \/-/�A_\il/ I // /\/I� i\=\, \_i�\ /'\I\I\/v= I/1�\�\ \I.\\I=�I \V�i\I/_ // /\I�IVVI \ =fI- I/ \//► II\I/I/i /� �/1 l� I\\\Iw\liI1IlI \AAI / l/I /�\IiI> \I\lI\)I� �� �\ lv\l// /�/\\_\\\II/\�I /�\ 1\ /A/�I\- \/\'_ �\1V 1\I\� l\�-I\IIa //1/ V — �VV\I I/�III1111l> / �VA` VII/-\/�ICA vII\AI'\�/AI1)(A -1�\vA _ /�� J�\ vI/1I/< 1)v�\v(Il\ I v\I\� /�\ I\)Il �I� /\1lI1vvVIlI \�_v vI 1,VII1 1\ I�%�/1 1A�A\w_ \1 1)/)V � ��/A av \)�/;'_tevo -1 v /�� � \/�_/v � I II1— �i\�/ �T,(IV1l//\I/l l/I/ I l\' 1��/)- y//\\/1 /I/ - /, l,I1I� / AII _/� //// I�I\J/�!I/I1/i/I/1)/lIA/I(I7<1/Il�/ l�/l//l/i /\1////�A/I\\�l\l/l/��/Ill- 1/I// (/ 1\ Il//I1I� lI�//�/I/\/�l//\/ /1II/�iI/l/Ill I v / \1 l\ I�I�/\I\/i�/ l�I `/ / /Iijl)II/ �ol /��//1//\1I //lv//\A\ /// /I VI\/1 // 1 ll// A/�V 1/!l/f/// ////\1/II V = //// �1I \!iIl �/ �/ /!/\ /�/ / /%/���'\ \_�v//(/\,\l / /=IvIrll\/I ce//l\ I/ //_////IlJIv i�/��--/�\ I�/— �/l///1Ijj/ / �/ /-/IA//I�/ //\/ /- i\V�I/ v//v�/v\/ /�/I;(\�/ --1\ — ,�l /i=/ _ (�iA/ /I-_� /y �%v -/ //I ,\/i\/��� � V/__ v - /\/�v �// v\_ iv/-;II_/I/\/ vi/\_//l -\V/=// i �-�/<-/ �_ �I/�-��_� / �I//\ _/�_J '/_ /�-\ i�I—v/I/ _I//, /�-I/I® \/ 1-v% /%/// /� _ //I /II/\=/ %-v/i� i/v/_—/\ ///d�_/ l\--/\/i _/Il -/ V/ /� —/_/- /v v/������/ i\ /v= /\�i Ii//�/i/l�/// �%1/ v/\v�/ ////�;�v\ /� v/�\/ // �/vlV�/ (��ir //v�/\/ //�/J \/\!,=11 �/\ \\v/ / / /_\\ -/ / \/i��_/f\v///�=1\-_ vI�/I �/- I �/�//(\ vv=//_/\ /�/�\\�I\/ j/\IIv\//-/ �li,/ �v�/� � J '��° // l //� \////(=_//_: I//v \ _//Iv/I _ 1V� //I�,�\I_\� / /_/�\I-- v - \/I/\- -/\ I //O/ ///I i�\- �/\�/\I —\ %I/ // �I ��///i\ /vv ��Iv�/I// \ /I� \/ \ (`� i�_\\��////i/\v/ \/\v////�v \-\ �-v�\ �I//v1i // \\ // ,v�//\\/ �\I i1i1 / \\�/ /\/ -\//-i 1v�\v/L / I/ �v/ \V//- v�v �/�\\Vv\ / \\I /i/\\ \ - � Av -i/>_v�/ — �V� \ // Vv�\1v II�//_ \\ I _ �/AyI � �A'/1vA _\ / I)/\/ a/ ==/ I�v\�o� v/ �_/Iv�\i\\ \ - f�/<IL\�/ Iv lvv V / /-\\I /A _l1/r1\i/ �/— // \ 1I>� �\ �/1V�(\\j� \- \\ \il\ / ��l/ii-\ /A A\ ��\ \/vl v/\ \\/�/ -\ \//\\i \ I =/Iii\\\ =/\\\v,\V ;/- \�\IV\�/ 1v r \\ �I\� \ \I �I//�\ $-\I\//vv \\- \V�/_A( 1�\A\/ \\v-//v \
—�\()-/ �/lI iII\ — \//�I s/v\/v1\\_ �\/—I�I -I— \\/♦ /1v�\Mr V/-1\ //1vJ�/\�—l�\/- � v\� /LI��-\/v�/�_ /° \I/1 _ l_ ��\A V\1v�O,//_ .v �/\ l -/� /—l\\=! , v -/� lj /\_AI1t l/�l- --� \_-V\�-/-�V/l'/ _ 1_ _\ I \/ ,� V/I \ / � /I /_ jV�/ \/� / --// / /�f � I) o- I //A/ rI- \///�L///w�_/ i\//\I/\�/ �- \\/ /i \-/\ \- \v//V\\ / \=\\\/l/ \v� � ����\/�—\ \\ / \ ��\�/'^�� - - -f�A _/\ \/�_�\\�,-o �/l\"/\�\! /v�nr- � >i\_ r\//// l /.\ o \iv\A,/ �_% /r\.\ // /\ _/\v v� _\/\_\/\ / ��="\\ v//// \ =�„/l-
III
� =
I
\I�—
/I
/ 4/
C���//1
—AIIL/l\O
U/)-j'
RI\
\/I\I
/A
E
—
1A�I
IV/ I_'v fI\,I�A1I,IIyI1IvB\1I\1�_IlfI\III1I �(I\�\I\1\1�IIII1III\"IyY
VA
I./- / - /-//�////yo\/i�\ /_�_ �,✓��/��_ � // / \ "/ / _ c� /i.,/\/ / =�(/A-/,i�vI
-
✓\\I
\ \
v�
\\_\w\
\
B \\
\\v-_/�\v\
I
\A
�I�
=
I
\-
\/
-
v�
I\
\\
/
�
Bfx1l 1000
/////
/ � /
\/(/(iT V�\A'\\
C j
//(/ �///
011
i \AV\,\ LEGEND LU
— APPROXIMATE LIMITS OF CCR BOUNDARY
APPROXIMATE LIMITS OF EASTERN
EXTENSION IMPOUNDMENT
OUTER LIMIT OF UNLINED LANDFILL AND s�v\II\SUBGRADE FILL
LINED LANDFILL BOUNDARY
SURVEYED POND AREA I v/ SURVEYED STREAM/CHANNEL AREA
EXISTING TRANSMISSION LINES
AV
E �4/ REFERENCES:
1. ASH BASIN FACILITY BOUNDARIES TAKEN FROM , COMPREHENSIVE SITE
ASSESSMENT REPORT, ROXBORO STEAM ELECTRIC PLANT, SEPTEMBER 2015 AND PHASE 2
/ APPROXIMATE.ARE
METHODS FROM AERIAL PHOTOGRAPHY OBTAINED ON APRIL 16,2014 BYWSP.2. EXISTING TOPOGRAPHIC INFORMATION WAS PRODUCED FROM PHOTOGRAMMETRIC
200 0 200 400 FT
___ TITLEROXBORO ASH BASIN CLOSURE PROJECT
woode ROXBORO EAST ASH BASIN (EAB)
A Environment &Infrastructure Solutions EAB CLOSURE -BY -REMOVAL OPTION 4
\=V\/ 4021 STIRRUP CREEK DRIVE, SUITE 100 DURHAM
NC 27703
TEL: [phone]
FAX: [phone]/A/FORLICENSURE: NOT RELEASED FOR CONSTRUCTIONNC ENG: F-12531/I7 NCGEOLOGY: C247Nx11 _/ _ SEAL SCALE: AS SHOWN DES: NP
Z DWG TYPE: DWG DFTR: BBDUKE �JOB NO: 7810181107 CHKD: NP
L ENEK%IW7DATE: 12/07/2018 ENGR: DG
FILENAME: EAB Closure Option.dwg APPD: DG� F
/ I ✓/// //i/� 1 � / I � \ vv j / i � I C / A �_ �\ � — / \ � — � � � / / I I � — - J A A \ \\ \ \ \ V A A \ v A � � ¢ \ \_ VA \V l / / � — iDWG SIZE DRAWING NO. REVISION
_-
/ III —Ir
ANSID
/ l I I 1 — — I - _ NOT RELEASED FOR CONSTRUCTION
I l� I/ll L I l / /III /y� - - 22°X34° EAB 4.1 0
1 AI 'V I 1 / I \� V A\ — �Av / — _ % i — — — REV DATE JOB NO. PROJECT TYPE DES DFTR CHKD ENGR APPD DESCRIPTION
INCHES 1 2 3 TENTHS 10 20 30 4 5 6 7 8 9 10
I I I I I I I

ATTACHMENTS
Attachment B - Rough Order of Magnitude (ROM) Cost
Estimates

Roxboro EAB Closure Option 1 - Close in Place (Minimum Excavation)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
Unit Cost
I Total Cost
Estimate Note
PROPERTY ACQUISTION
Property ACquition Cost
0
Acres
$3,000
$
Best estimate of property values in area from review of lax values and for sale listing for large tracts in Person County. NOT VERIFIED.
SUBTOTAL PROPERTY ACQUISTION
$ -
GENERAL
Surveying
63
Acres
$ 2,000
$ 126,000
Removal &Filtration of Free Water (Initial Dewatering)
0
Mo
$ 416,667
$
Assume not required for EAB
Removal &Treatment of Pore Water
0
Mo
$ 583,333
$
Assume not required for In -place closure option.
Breaching EAB Main Dam
1
LS
$1,000,000
$ 1,000,000
Place holder for cost with no technical basis.
SUBTOTALGENERAL
$ 1,126,000
EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
East Ash Basin Sediment Control and Stormwater Management
63
Acres
$14,000.00
$ 882,000
Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. Includes silt fence, wattles, surface
water diversions, sediment basins, temporary seeding and permanent seeding.
Landfill Area Sediment Control and Stormwater Management
0
Acres
$14,000.00
$ _
Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. Includes silt fence, wattles, surface
water diversions, sediment basins, temporary seeding and permanent seeding.
Permanent Drainage and Surface Stabilization Measures
63
Acres
$3,787
$ 238,565Unit
rate obtained from Duke Energy summary data was used for consistency.
Permanent Riprap Stormwater Channels
6,000
LF
$56
$ 333,360
Unit rate obtained from Duke Energy summary data fo consistency. Est 10' wide x 1.5' depth = 15 cf/ft length/27 cf/cy = .56 cy/ft length.
.56 cy/ft x 2 tons/cy = 1.1 tons/ft length. Est $50fton x 1.1 ton/ft = $55.56/lf.
Permanent Discharge Outlet Structure Main Dam
1
LS
$500,000
$ 5'0"00
Place holder for cost.
SUBTOTAL EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENI
$ 1,953,925
SEPARATOR BERM EARTH FILL STABILIZATION BUTTRESS
Not required for this option
Earth Fill Buttress Construction
Rock Cut for bypass channel excavation
5,556
CY
$30.00
$ 166,680
Unit cost for rock cut revised to $30/cy based on estimate review by KID. Estimate by-pass channel excavation as follows: 300' channel
length for excavation x 50' avg width (40' existing) x 10' avg cut depth /27 = 5556 cy. Note that excavated material may be used as fill for
construction of the proposed new berm.
Haul & Dispose of Rock On -site <1.0 mile (for bypass channel
excavation)
5,556
CY
$3.00
$ 16,668
Estimate by-pass channel excavation as follows: 300' channel length for excavation x 50' avg width (40' existing) x 10' avg cut depth /27 =
5556 cy. Note that excavated material may be used as fill for construction of the proposed new berm.
Soil Fill Material for embankment
66,296
CY
$13
$ 161,148Estimate
dike volume based on maximum embankment height of 40', crest width 15',ezterior slope 2.51­1:1 V, length 250'.
Earth Fill Buttress Cover System
Subgrade Preparation
3.0
Acres
$5,000.00
$ 15,000
Grade surface of subbase prior to installation of final cover system. Unit costs from construction contractor
8 oz/sy Non -Woven Geotextile
0
SY
3.00
$
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
Geocom osite Drainage Layer
130,680
SF
$1.45
$ 189,486
Unit Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System 18" Soil Cover
7,260
CY
$13.00
$ 94,380Unit
Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System To Soil Placement
2,420
CY
$13.00
$ 31,460Unit
Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
SUBTOTAL SEPARATOR BERM EARTH FILL STABILIZATION BUTTRES
$ 1,375,522
EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVAL
Mobilize and stage dredging operations
1
LS
$300,000.00
$ 300,000
Perform dredging for removal of ash & impacted sediment
97,901
CY
$14.99
$ 1,467,536
Unit Cost based on Duke Energy estimate averages was used for consistency. Assume Unit Cost = $12.49/lon x 1.2 tons/cy = $14.99/cy.
(On -Road) Hauling of Pond Ash and Impacted Soils to landfill
CY
$14.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
Off Road Hauling of Pond Ash and Impacted Soils within basin
97,901
CY
$2.00
$ 195,802Unit
Cost based on Duke Energy estimate averages was used for consistency.
Placement of Ash and Impacted Soils In Landfill
CY
$1.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
SUBTOTAL EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVA
$ 1,963,338
EARTHWORK
Ash Basin Earthwork
1000
LF
$65
$ 65,000Unit
Construction Entrance
Cost based on Amec Foster Wheeler experience and previous closure option cost estimates.
5
Acres
$5,000
$ 25,000
Clear and remove vegetation including trees, brush, schrubs. Unit Cost based on Amec Foster Wheeler experience and previous closure
Clearing and Grubbing
option cost estimates. Increased to $5000/acre from review by NWH.
5
Acres
$4,000
$ 20,000
Strip topsoil to a minimum 6-inch depth and place in stockpile. Unit Cost based on Amec Foster Wheeler experience and previous closure
Topsoil Stripping
option cost estimates. Incresed to $4000/acre from review by NWH.
0
CY
$9.24
$
Earthwork Cut to Waste
Unit Cost based on Duke Energy estimate averages was used for consistency.
140,740
CY
$9.24
$ 1,300,438
Earthwork Cut to Fill
Unit Cost based on Duke Energy estimate average was used for consistency.
230,600
CY
$13
$ 2,997,800Unit
Net Required Soil Fill Material assume off -site borrow source
Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Topsoil Material; if required (6-inch thick un-compacted fill, source
CY
$13
$ -
material off -site)
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
SUBTOTAL EARTHWORK
$ 4,408,238
ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
6,000
LF
$60
$ 360,000
Amec Foster Wheeler experience based on 12-inch thick ABC and supporting geotextile at 20-fool width. Unit Cost based on Amec
Haul Road Construction
Foster Wheeler experience and previous closure option cost estimates.
140,740
CY
$8.43
$ 1,186,438Unit
Excavation and Loading of Pond Ash for Truck Hauling
Cost based on Duke Energy estimate averages used for consistency. Assume loadinglhauling required to support site grading.
0
CY
$10.00
$
Excavation and Loading of Subsurface Soils for Truck Hauling
Unit Cost based on Duke Energy estimate averages used for consistency. Assume loading/hauling required to support site grading.
(On -Road) Hauling of Pond Ash and Impacted Soils for Off -site Landfill
0
CY
$6.50
$ -
miles
140,740
CY
$2.00
$ 281,480Unit
Off Road Hauling of Pond Ash and Impacted Soils within basin
Cost based on Duke Energy estimate averages used for consistency. Assume loading/hauling required to support site grading.
140,740
CY
$9.24
$ 1,300,438
For this option, assume placement similar to landfill for cost estimating. Loading & hauling estimate provided separately. Unit Cost based
Ash Placement Cut to Fill
on Duke Energy estimate averages was used for consistency. Use cut to fill unit cost for estimating purposes.
4
EA
$150,000
$ 600,000
Truck wash necessary to clean tires and undercarriage of trucks for over -the -road hauling. Unit Cost based on Amec Foster Wheeler
Truck Wash
experience and previous closure option cost estimates.
Bridge Repair and Maintenance 0 LS $5001000 $ Placed holder estimate for potential bridge repair and maintenance cost. NOT VERIFIED.
Paved Haul Road Repair 0 LF $120 $ Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates.
SUBTOTAL ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMEN $ 3,728,356
E IN PLACE COVER CONSTRUCTION
in Place Option Cover Svstem Construction
63
Acres
$5,000.00
$ 315,000
Sub fade Preparation
Grade surface of subbase prior to installation of final cover system. Unit costs from construction contractor
9,000
LF
$6.00
$ 54,000
Anchor Trench
Fumish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
0
SF
$0.73
$ -
Geosynthetic Clay Liner (GCL) - Not required
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
304,920
SY
3.00
$ 914,760
8 oz/sy Non -Woven Geotextile
Fumish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
2,744,280
SF
$1.02
$ 2,799,166
Unit Cost based on Duke Energy estimate averages was used for consistency. Includes $0.42/sf for liner and $0.60/sf for GCL layer
Geocomposite Drainage Layer
($1.02/sf total)
152,460
CY
$13
$ 1,981,980
Cover System 18" Soil Cover
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Page 1 of 2

Roxboro EAB Closure Option 1 - Close in Place (Minimum Excavation)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
Unit Cost
Total Cost
Estimate Note
Cover System To Soil Placement
50,820
CY
$13
$ 660,660
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
SUBTOTAL COVER SYSTEM CONSTRUCTION
$ 6,725,566
SUBTOTAL CLOSURE CONSTRUCTION COST
$ 21,280,944
Estimate at 1 % of Final Closure Construction Cost
MOBILIZATION COST
$ 212,809
TOTAL CLOSURE CONSTRUCTION COST (WITH MOBILIZATION
$ 21,493,754
OTHER COST
Design, Permitting and CQA
Closure Design/Engineering/Permitting(5% of Total Closure
Construction Cost)
1
LS
$ 1,074,688
$ 1,074,688
Revised to 5%
Construction Quality Assurance (CQA) (5% of Total Closure Construction
Cost)
1
LS
$ 1,074,688
$ 1,074,688
Revised to 5%
Subtotal Design, Permitting and CQ
$ 2,149,375
Post Closure Operations and Maintenance (analysis based on 30 year duration)
Closure Area Maintenance (63 acres)
30
YR
$ 218,975
262569
$ 6,,
Unit Cost based on Duke Energy estimate averages was used for consistency. Estimate $3,475.80/ac/year.
Closure Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Landfill Area Maintenance (0 acres)
0
YR
$
$
Unit Cost based on Duke Energy estimate averages was used for consistency. Estimate $3,475.80/ac/year.
Landfill Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Subtotal Post Closure Operations and Maintenance
$ 6,569,262
Additional Costs
Contingency (15°/a of Final Closure Construction Costs)
1
LS
$ 3,224,063
$ 3,224,063
Amec Foster Wheeler experience from previous projects
Subtotal Additional Cos
$ 3,224,063
TOTAL OPINION OF PROBABLE CLOSURE COST
$ 33,436,454
Rough Order of Magniture Cost Estimate
OPINION OF PROBABLE CLOSURE COST PER CY
$ 10.32
Based on Volume of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER TON
$ 8.60
Based on Moist Unit Weight of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER ACRE
$ 530,737
Based on Estimated Closue Area
ESTIMATED QUANTITIES
Description
Estimated Landfill Property Area:
Estimated Landfill Development Area (including buffer and borrow area):
Estimated Lined Landfill Area:
Estimated East Ash Basin Closure Area:
Estimated EAB Restoration Area (after ash removal):
Estimated Close in Place Area
Estimated Ash Material Stored Volume:
Estimated Ash Material Stored Moist Wt:
Estimated Ash/Sediment Material Removed/Hauled Volume (EEI):
Estimated Ash/Sediment Material Removed/Hauled Moist Wt (EEI):
Estimated Ash Cut Volume:
Estimated Fill Volume:
Estimate Net Soil Fill Volume:
Estimated EAB Closure Soil Cover Volume:
EAB Eastern Extension Impoundment Soil Fill
Total Estimated Soil Fill Volume:
Estimated Borrow Area:
Estimate Notes:
1. This estimate is represented as Rough Order of Magnitude (ROM).
Est Quantity Units
0 Acres
0 Acres
0 Acres
63 Acres
0 Acres
63 Acres
3,240,000 CY
3,888,000 Tons (based on 1.2 Tons/CY Moist Unit Wt)
97,901 CY
117,481 Tons (based on 1.2 Tons/CY Moist Unit Wt)
140,740 CY
371,340
230,600 CY
203,280 CY
75,976 CY
509,856 CY
21.1 Acres (Assume 15' max excavartion depth based on Duke guidelines.)
Page 2 of 2

Roxboro EAB Closure Option 2 - Closure by Removal (with Off -Site Landfill at Mayo Plant)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
Unit Cost
I Total Cost
Estimate Note
PROPERTY ACQUISTION
Property ACquition Cost
Acres
$3,000
$
Best estimate of property values in area from review of lax values and for sale listing for large tracts in Person County. NOT VERIFIED.
SUBTOTAL PROPERTY ACQUISTION
$ -
GENERAL
Mobilization
1
LS
$ -
Estimate at 5 % of Final Closure Construction Cost (see below)
Surveying
63
Acres
$ 2,000
$ 126,000
Removal &Filtration of Free Water Initial Dewaterin
0
Mo
$ 416,667
$
Assume not required for EAB
Removal & Treatment of Pore Water
36
Mo
$ 583,333
$ 20,999,988
Assume required for duration of construction. Estimated duration 3 years. Unit rate obtained from Duke Energy summary data to
consistency.
Breaching EAB Main Dam
1
LS
$1,000,000
$ 1,000,000
Place holder for cost with no technical basis. .
SUBTOTALGENERAL
$ 22,125,988
EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
East Ash Basin Sediment Control and Stormwater Management
63
Acres
$14,000.00
$ 882,000
Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. Includes silt fence, wattles, surface
water diversions, sediment basins, temporary seeding and permanent seeding.
Permanent Drainage and Surface Stabilization Measures EAB
63
Acres
$3,787
$ 238,565Unit
rate obtained from Duke Energy summary data was used for consistency.
SUBTOTAL EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMEN1
$ 1,120,565
SEPARATOR BERM EARTH FILL STABILIZATION BUTTRESS
Not required for this option
Earth Fill Buttress Construction
Rock Cut for bypass channel excavation
5,556
CY
$30.00
$ 166,680
Unit cost for rock cut revised to $30/cy based on estimate review by KID. Estimate by-pass channel excavation as follows: 300' channel
length for excavation x 50' avg width (40' existing) x 10' avg cut depth /27 = 5556 cy. Note that excavated material may be used as fill for
construction of the proposed new berm.
Haul & Dispose of Rock On -site <1.0 mile (for bypass Channel
excavation)
5,556
CY
$3.00
$ 16,668
Estimate by-pass channel excavation as follows: 300' channel length for excavation x 50' avg width (40' existing) x 10' avg cut depth /27 =
5556 cy. Note that excavated material may be used as fill for construction of the proposed new berm.
Soil Fill Material for embankment
66,296
CY
$13
$ 161,148
Estimate dike volume based on maximum embankment height of 40', crest width 15',exterior slope 2.51­1:1 V, length 250'.
Earth Fill Buttress Cover System
Subgrade Preparation
3.0
Acres
$5,000.00
$ 15,000
Grade surface of subbase prior to installation of final cover system. Unit costs from construction contractor
8 oz/sy Non -Woven Geotextile
0
SY
3.00
$
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
Geocom osite Drainage Layer
130,680
SF
$1.45
$ 189,486
Unit Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System 18" Soil Cover
7,260
CY
$13.00
$ 94,380Unit
Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System To Soil Placement
2,420
CY
$13.00
$ 31,460
Unit Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
SUBTOTAL SEPARATOR BERM EARTH FILL STABILIZATION BUTTRES
$ 1,375,522
EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVAL
Mobilize and stage dredging operations
1
LS
$300,000.00
$ 300,000
Perform dredging for removal of ash & impacted sediment
97,901
CY
$14.99
$ 1,467,536
Unit Cost based on Duke Energy estimate averages used for consistency. Assume Unit Cost = $12.49/ton x 1.2 tons/cy = $14.99/cy.
(On -Road) Hauling of Pond Ash and Impacted Soils to landfill
CY
$14.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
Off Road Hauling of Pond Ash and Impacted Soils within basin
97,901
CY
$2.00
$ 195,802
Unit Cost based on Duke Energy estimate averages was used for consistency.
Placement of Ash and Impacted Soils In Landfill
CY
$1.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
SUBTOTAL EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVAII
$ 1,963,338
EARTHWORK
Ash Basin Earthwork
1000
LF
$65
$ 65,000Unit
Construction Entrance
Cost based on Amec Foster Wheeler experience and previous closure option cost estimates.
5
Acres
$5,000
$ 25,000
Clear and remove vegetation including trees, brush, schrubs. Unit Cost based on Amec Foster Wheeler experience and previous closure
Clearing and Grubbing
option cost estimates. Increased to $5000/acre from review by NWH.
5
Acres
$4,000
$ 20,000
Strip topsoil to a minimum 6-inch depth and place in stockpile. Unit Cost based on Amec Foster Wheeler experience and previous closure
Topsoil Stripping
option cost estimates. Incresed to $4000/acre from review by NWH.
0
CY
$9.24
$
Earthwork Cut to Waste
Unit Cost based on Duke Energy estimate averages was used for consistency.
10,000
CY
$9.24
$ 92,400
Earthwork Cut to Fill
Unit Cost based on Duke Energy estimate average was used for consistency.
CY
$13
$
Soil Fill Material assume off -site borrow source
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Topsoil Material; if required (6-inch thick un-compacted fill, source
CY
$13
$ -
material off -site)
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
SUBTOTAL EARTHWORK
$ 202,400
ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
6,000
LF
$60
$ 360,000
Amec Foster Wheeler experience based on 12-inch thick ABC and supporting geotextile at 20-fool width. Unit Cost based on Amec
Haul Road Construction
Foster Wheeler experience and previous closure option cost estimates.
3,240,000
CY
$8.43
$ 27,313,200Unit
Excavation and Loading of Pond Ash for Truck Hauling
Cost based on Duke Energy estimate averages was used for consistency.
233,933
CY
$10.00
$ 2,339,333Unit
Excavation and Loading of Subsurface Soils for Truck Hauling
Cost based on Duke Energy estimate averages was used for consistency.
3,439,541
CY
$14.50
$ 49,873,345
Hauling of Pond Ash and Impacted Soils to off -site landfill at Mayo Plant
Unit Cost based on Duke Energy estimate averages was used for consistency.
$2.00
$
Off Road HaulingCY
of Pond Ash and Impacted Soils 0.7 miles
Unit Cost based on Duke Energy estimate averages was used for consistency.
3,439,541
CY
$1.50
$ 5,159,312Unit
Placement of Pond Ash and Impacted Soils
Cost based on Duke Energy estimate averages was used for consistency.
4
EA
$150,000
$ 600,000
Truck wash necessary to clean tires and undercarriage of trucks for over -the -road hauling. Unit Cost based on Amec Foster Wheeler
Truck Wash
experience and previous closure option cost estimates.
Bridge Repair and Maintenance 0 LS $500,000 $ Placed holder estimate for potential bridge repair and maintenance cost. NOT VERIFIED.
79,200 LF $120 $ 9,504,000
Paved Haul Road Repair Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. 15 miles used for planning.
SUBTOTAL ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMEN rs 95,149,189
& CLOSE IN PLACE COVER CONSTRUCTION
Landfill Construction
41
1 Acres
1 $400,0001
$ 16,400,000
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
41
Acres
$150,000
$ 6,150,000
Landfill Closure
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Close in Place Option Cover System Construction
0
Acres
$5,000.00
$
Subgrade Preparation
Grade surface of subbase prior to installation of foal cover system. Unit costs from construction contractor
0
LF
$6.00
$
Anchor Trench
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
0
SY
3.00
$
8 oz/sy Non -Woven Geotextile
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
0
SF
$1.02
$ _
Unit Cost based on Duke Energy estimate averages was used for consistency. Includes $0.42/sf for liner and $0.60/sf for GCL layer
Geocomposite Drainage Layer
($1.02/sf total)
0
CY
$13
$
Cover System 18" Soil Cover
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Page 1 of 2

Roxboro EAB Closure Option 2 - Closure by Removal (with Off -Site Landfill at Mayo Plant)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
Unit Cost
Total Cost
Estimate Note
Cover System To Soil Placement
0
CY
$13
$
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
SUBTOTAL LANDFILL CONSTRUCTION
$ 22,550,000
SUBTOTAL CLOSURE CONSTRUCTION COST
$ 144,487,003
Estimate at 1 % of Final Closure Construction Cost
MOBILIZATION COST
$ 1,444,870
TOTAL CLOSURE CONSTRUCTION COST (WITH MOBILIZATION)
$ 145,931,873
OTHER COST
Design, Permitting and CQA
Closure Design/Engineering/Permitting(5% of Total Closure
Construction Cost)
1
LS
$ 7,296,594
$ 7,296,594
Revised to 5%
Construction Quality Assurance (CQA) (5% of Total Closure Construction
Cost)
1
LS
$ 7,296,594
$ 7,296,594
Revised to 5%
Subtotal Design, Permitting and CQ
$ 14,593,187
Post Closure Operations and Maintenance (analysis based on 30 year duration)
Closure Area Maintenance (63 acres)
30
YR
$ 218,975
262569
$ 6,,
Unit Cost based on Duke Energy estimate averages used for consistency. Estimate $3,475.80/aa/year.
Closure Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Landfill Area Maintenance (41 acres)
30
YR
$ 142,508
$ 4,275,234
Unit Cost based on Duke Energy estimate averages used for consistency. Estimate $3,475.80/ac/year.
Landfill Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Subtotal Post Closure Operations and Maintenance
$ 10,844,496
Additional Costs
Contingency (15°/a of Final Closure Construction Costs)
1
LS
$ 21,889,781
$ 21,889,781
Amec Foster Wheeler experience from previous projects
Subtotal Additional Cost
$ 21,889,781
TOTAL OPINION OF PROBABLE CLOSURE COST
$ 193,259,337
Rough Order of Magniture Cost Estimate
OPINION OF PROBABLE CLOSURE COST PER CY
$ 59.65
Based on Volume of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER TON
$ 49.71
Based on Moist Unit Weight of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER ACRE
$ 3,067,609
Based on Estimated Closue Area
ESTIMATED QUANTITIES
Description
Estimated Lined Landfill Area:
Estimated East Ash Basin Closure Area:
Estimated EAB Restoration Area (after ash removal):
Estimated Close in Place Area
Estimated Ash Material Stored Volume:
Estimated Ash Material Removed/Hauled Moist Wt:
Estimated Ash/Sediment Material Removed/Hauled Volume (EEI):
Estimated Ash/Sediment Material Removed/Hauled Moist Wt (EEI):
Estimated Contaminated Soil Removed/Hauled Volume:
Total Estimated Ash and Contaminated Soil Removed/Hauled Volume:
EAB Eastern Extension Impoundment Soil Fill Volume:
Total Estimated Landfill Soil Cover Volume:
Total Estimated Soil Fill Volume:
Estimated Borrow Area:
Estimate Notes:
1. This estimate is represented as Rough Order of Magnitude (ROM).
Est Quantity Units
41 Acres
63 Acres
63 Acres
0 Acres
3,240,000 CY
3,888,000 Tons (bsed on 1.2 Tons/CY Moist Unit Wt)
97,901 CY
117,481 Tons (based on 1.2 Tons/CY Moist Unit Wt)
101,640 CY
3,439,541 CY
75,976 CY
132,293 CY
208,269 CY
8.6 Acres (Assume 15' max excavartion depth based on Duke guidelines.)
Page 2 of 2

Roxboro EAB Closure Option 3 - Close in Place Hybrid
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
Unit Cost
I Total Cost
Estimate Note
PROPERTY ACQUISTION
Property ACquition Cost
Acres
$3,000
$
Best estimate of property values in area from review of lax values and for sale listing for large tracts in Person County. NOT VERIFIED.
SUBTOTAL PROPERTY ACQUISTION
$ -
GENERAL
Surveying
63
Acres
$ 2,000
$ 126,000
Removal &Filtration of Free Water (Initial Dewatering)
0
Mo
$ 416,667
$
Assume not required for this options.
Removal & Treatment of Pore Water
6
Mo
$ 583,333
$ 3.499,998
Assume required for duration of construction. Estimated duration 6 months. Unit rate obtained from Duke Energy summary data fo
consistency.
Breaching EAB Main Dam
1
LS
$1,000,000
$ 1,000,000
Place holder for cost with no technical basis.
SUBTOTALGENERAL
$ 4,625,998
EROSIONISEDIMENT CONTROL AND STORMWATER MANAGEMENT
East Ash Basin Sediment Control and Stormwater Management
41
Acres
$14,000.00
$ 572,600
Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. Includes silt fence, wattles, surface
water diversions, sediment basins, temporary seeding and permanent seeding.
Permanent Drainage and Surface Stabilization Measures (EAB)
41
Acres
$3,787
$ 154,878Unit
rate obtained from Duke Energy summary data was used for consistency.
SUBTOTAL EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENI
$ 727,478
SEPARATOR BERM EARTH FILL STABILIZATION BUTTRESS
Not required forthis option
Earth Fill Buttress Construction
Rock Cut (for bypass channel excavation)
5,556
CY
$30.00
$ 166,680
Unit cost for rock cut revised to $30/cy based on estimate review, by KID. Estimate by-pass channel excavation as follows: 300' channel
length for excavation x 50' avg width (40' existing) x 10' avg out depth /27 = 5556 cy. Note that excavated material maybe used as fill for
construction of the proposed new berm.
Haul & Dispose of Rock On -site <1.0 mile (for bypass channel
excavation)
5,556
CY
$3.00
$ 16,668
Estimate by-pass channel excavation as follows: 300' channel length for excavation x 50' avg width (40' existing) x 10' avg cut depth /27 =
5556 cy. Note that excavated material may be used as fill for construction of the proposed new berm.
Soil Fill Material (for embankment)
66,296
CY
$13
$ 861,848Estimate
dike volume based on maximum embankment height of 40', crest width 15',exterior slope 2.5H:1V, length 250'.
Earth Fill Buttress Cover System
Subgrade Preparation
3.0
Acres
$5,000.00
$ 15,000
Grade surface of subbase prior to installation of foal cover system. Unit costs from construction contractor
8 oz/sy Non -Woven Geotextile
0
SY
3.00
$
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
Geocomposite Drainage Layer
130,680
SF
$1.45
$ 189,486
Unit Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System 18" Soil Cover
7,260
CY
$13.00
$ 94,380Unit
Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
Cover System Top Soil Placement
2,420
CY
$13.00
$ 31,460Unit
Cost based on Amec Foster Wheeler experience and previous landfill cost estimates.
SUBTOTAL SEPARATOR BERM EARTH FILL STABILIZATION BUTTRES
$ 1,375,522
EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVAL
Mobilize and stage dredging operations
1
LS
$300,000.00
$ 300,000
Perform dredging for removal of ash & impacted97,901
sediment
CY
$14.99
$ 1,467,536
Unit Cost based on Duke Energy estimate averages was used for consistency. Assume Unit Cost = $12.49/lon x 1.2 tons/cy = $14.99/cy.
On -Road Hauling of Pond Ash and Impacted Soils to landfill
CY
$14.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
(Off Road) Hauling of Pond Ash and Impacted Soils (within basin)
97,901
CY
$2.00
$ 195,802Unit
Cost based on Duke Energy estimate averages was used for consistency.
Placement of Ash and Impacted Soils In Landfill
CY
$1.50
$
Unit Cost based on Duke Energy estimate averages was used for consistency.
SUBTOTAL EAB EASTERN EXTENSION IMPOUNDMENT CLOSURE BY REMOVAIII
$ 1,963,338
EARTHWORK
Ach Rasin Farthwnrk
1000
LF
$65
$ 65,000Unit
Construction Entrance
Cost based on Amec Foster Wheeler experience and previous closure option cost estimates.
5
Acres
$5,000
$ 25,000
Clear and remove vegetation including trees, brush, schrubs. Unit Cost based on Amec Foster Wheeler experience and previous closure
Clearing and Grubbing
option cost estimates. Increased to $5000/acre from review by NWH.
5
Acres
$4,000
$ 20,000
Strip topsoil to a minimum 6-inch depth and place in stockpile. Unit Cost based on Amec Foster Wheeler experience and previous closure
Topsoil Stripping
option cost estimates. Incresed to $4000/acre from review by NWH.
0
CY
$9.24
$
Earthwork Cut to Waste
Unit Cost based on Duke Energy estimate averages was used for consistency.
287,467
CY
$9.24
$ 2,656,195
Earthwork Cut to Fill
Unit Cost based on Duke Energy estimate average was used for consistency.
0
CY
$13
$
Soil Fill Material (assume off -Site borrow Source)
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Topsoil Material; if required (6-inch thick un-compacted fill, source
CY
$13
$ -
material off -site)
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
SUBTOTAL EARTHWORK
$ 2,766,195
ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
6,000
LF
$60
$ 360,000
Amec Foster Wheeler experience based on 12-inch thick ABC and supporting geotextile at 20-foot width. Unit Cost based on Amec
Haul Road Construction
Foster Wheeler experience and previous closure option cost estimates.
34,146
CY
$8.43
$ 287,851Unit
Excavation and Loading of Pond Ash for Truck Hauling
Cost based on Duke Energy estimate averages was used for consistency.
35,655
CY
$10.00
$ 356,547Unit
Excavation and Loading of Subsurface Soils for Truck Hauling
Cost based on Duke Energy estimate averages was used for consistency.
CY
$14.50
$ 5,706,195
Hauling393,531
of Pond Ash and Impacted Soils to off -site landfill at Mayo Plant
Unit Cost based on Duke Energy estimate averages was used for consistency.
CY
$2.00
$
(Off Road) Hauling of Pond Ash and Impacted Soils 0.7 miles
Unit Cost based on Duke Energy estimate averages was used for consistency.
393,531
CY
$1.50
$ 590,296Unit
Placement of Pond As and Impacted Soils
Cost based on Duke Energy estimate averages was used for consistency.
4
EA
$150,000
$ 600,000
Truck wash necessary to clean tires and undercarriage of trucks for over -the -road hauling. Unit Cost based on Amec Foster Wheeler
Truck Wash
experience and previous closure option cost estimates.
Bridge Repair and Maintenance 0 LS $500,000 $ Placed holder estimate for potential bridge repair and maintenance cost. NOT VERIFIED.
79,200 LF $120 $ 9,504,000
Paved Haul Road Repair Unit Cost based on Amec Foster Wheeler experience and previous closure option cost estimates. 15 miles used for planning
SUBTOTAL ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMEN rs 17,404,888
Landfill Construction 12 1 Acres 1 $400,0001 $ 4,800,000 Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Landfill Closure 12 Acres $150,000 $ 1,800,000 Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Close in Place Option Cover Svstem Construction
41
Acres
$5,000.00
$ 204,500
Sub fade Preparation
Grade surface of subbase prior to installation of final cover system. Unit costs from construction contractor
9,000
LF
$6.00
$ 54,000
Anchor Trench
Fumish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
197,956
SY
3.00
$ 513,168
8 oz/sy Non -Woven Geotextile
Furnish and install geotextile as a cushion layer. Unit costs from Glover; costs typically include material, QC testing, and installation
Cover System Geosynthetics (40-mil LLDPE Geomembrane and
1,781,604
SF
$1.02
$ 1,817,236
Unit Cost based on Duke Energy estimate averages was used for consistency. Includes $0.42/sf for liner and $0.60/sf for GCL layer
Geocemposite Drainage Layer
($1 02/sf total)
98,978
CY
$13
$ 1,286,714
Cover System 18" Soil Cover
Unit Cost based on Duke Energy estimate averages was used for consistency. No change in estimate.
Cover Svstem ToD Soil Placement
32,993
CY
$13
$ 428,905
Unit Cost based on Duke Enerov estimate averages was used for consistencv. No change in estimate.
Page 1 of 2

Roxboro EAB Closure Option 3 - Close in Place Hybrid
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Quantity
Unit
I Unit Cost
Total Cost
Estimate Note
SUBTOTAL LANDFILL & CLOSE IN PLACE COVER CONSTRUCTION
$ 10,985,223
SUBTOTAL CLOSURE CONSTRUCTION COST
$ 39,848,642
Estimate at 1 % of Final Closure Construction Cost
MOBILIZATION COST
$ 398,486
TOTAL CLOSURE CONSTRUCTION COST (WITH MOBILIZATION)
$ 40,247,128
OTHER COST
Design, Permitting and CQA
Closure Design/Engineering/Permitting (5% of Total Closure
Construction Cost)
1
LS
$ 2,012,366
$ 2,012,356
Revised to 5%
Construction Quality Assurance (CQA) (5% of Total Closure Construction
Cost)
1
LS
$ 2,012,356
$ 2,012,356
Revised to 5%
Subtotal Design, Permitting and CQ
$ 4,024,713
Post Closure Operations and Maintenance (analysis based on 30 year duration)
Closure Area Maintenance (63 acres)
30
YR
$ 218,975
$ 6,569,262
Unit Cost based on Duke Energy estimate averages used for consistency. Estimate $3,475.80/ac/year.
Closure Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Landfill Area Maintenance (12 acres)
30
YR
$ 41,710
$ 1,251,288
Unit Cost based on Duke Energy estimate averages used for consistency. Estimate $3,475.80/aGyear.
Landfill Area Monitoring
0
YR
$
Not included in estimate per Duke Energy direction.
Subtotal Post Closure Operations and Maintenance
$ 7,820,550
Additional Costs
Contingency 15 % of Final Closure Construction Costs
1
LS
$ 6,037,069
$ 6,037,069
Amec Foster Wheeler experience from previous projects
Subtotal Additional Costs
$ 6,037,069
TOTAL OPINION OF PROBABLE CLOSURE COST
$ 58,129,461
Rough Order of Magniture Cost Estimate
OPINION OF PROBABLE CLOSURE COST PER CY
$ 17.94
Based on Volume of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER TON
$ 14.95
Based on Moist Unit Weight of Ash Stored
OPINION OF PROBABLE CLOSURE COST PER ACRE
$ 922,690
Based on Estimated Closue Area
ESTIMATED QUANTITIES
Description
Estimated Lined Landfill Area:
Estimated East Ash Basin Closure Area:
Estimated EAB Restoration Area (after ash removal):
Estimated Close in Place Area
Estimated Ash Material Stored Volume:
Estimated Ash Material Stored Moist Wt:
Estimated Ash/Sediment Material Removed/Hauled Volume (EEI):
Estimated Ash/Sediment Material Removed/Hauled Moist Wt (EEI):
Estimated Ash Material Excavated/Removed Volume:
Estimated Total Ash Removed/Hauled Volume:
Estimated Ash Grade Cut Volume:
Estimated Ash Grade Fill Volume:
Estimated Net Fill Required Volume:
Estimated Ash Material Removed/Hauled Volume:
Estimated Contaminated Soil Removed/Hauled Volume:
Total Estimated Ash and Contaminated Soil Removed/Hauled Volume:
EAB Eastern Extension Impoundment Soil Fill Volume:
Estimated Landfill Soil Cover Volume:
Estimated EAB Closure Soil Cover Volume:
Total Estimated Soil Fill Volume:
Estimated Borrow Area:
Estimate Notes:
1. This estimate is represented as Rough Order of Magnitude (ROM).
Est Quantity Units
12 Acres
63 Acres
22 Acres
41 Acres
3,240,000 CY
3,888,000 Tons (based on 1.2 Tons/CY Moist Unit Wt)
97,901 CY
117,481 Tons (based on 1.2 Tons/CY Moist Unit Wt)
547,442 CY (Estimated volume removed from GB man area)
645,343 CY
34,146 CY
321,613 CY
287,467
357,876
35,655 CY
393,531 CY
75,976 CY
38,720 CY
131,971 CY
246,667 CY
10.2 Acres (Assume 15' max excavartion depth based on Duke guidelines.)
Page 2 of 2

REv 1/15/19
Roxboro EAB Closure Option 2 - Closure by Removal (Off -Site Landfill)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Person County, NC
Quantity
Unit
Unit Cost
Total Cost
Estimate Note
GENERAL
Surveying
223
Acres
$ 2,000
$ 446,200
Excavate and remove, including off -site disposal of existing storm water structures/piping. Price at $8k/day at 5 days per week for 4 weeks.
Abandon WAB Discharge Outlet Structures/Piping
1
EA
$ 200,000
$ 200,000
Unit Rate By Duke
SUBTOTALGENERAL
$ 646,200
EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
West Ash Basin Sediment Control and Stormwater Management
223
Acres
$14,000.00
$ 3,123,400
Unit Rate By Duke
Permanent Stabilization Measures
223
Acres
$3,787.00
$ 844,880
Unit Rate By Duke
SUBTOTAL EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
$ 3,968,280
EARTHWORK
Ash Basin Earthwork
Construction Entrance
50
LF
$65
$ 3,250
Amec Foster Wheeler experience based on $20/LF for 12-inch thick ABC and supporting geotextile at 20-foot width.
Clearing and Grubbing
Acres
$5,000
$ -
Clear and remove vegetation including trees, brush, shrubs.
Breaching Main Dam
1
LS
$1,000,000
$ 1,000,000
Unit Rate By Duke
Earthwork Cut to Fill
CY
$6.87
$ -
Unit Rate By Duke
Topsoil Stripping
Acres
$4,000.00
$ -
Unit Rate By Duke
Regrading Material; if required (18-inch thick un-compacted fill, source
material off -site)
517,154.0
CY
$11
$ 5,574,920
Unit Rate By Duke
Topsoil Material; if required (6-inch thick un-compacted fill, source material
off -site)
172,384.7
CY
$11
$ 1,858,307
Unit Rate By Duke
$ -
Landfill Earthwork
Landfill Construction
98
Acres
$400,000
$ 39,200,000
Unit Rate By Duke
Landfill Closure
98
Acres
$150,000
$ 14,700,000
Unit Rate By Duke
SUBTOTAL EARTHWORK
$ 62,336,477
ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
Temporary Dewatering (Ash Basin) Free Water
2
Mo
$416,667.00
$ 833,334
Unit Rate By Duke
Temporary Dewatering (Ash Basin) Construction Water
206
Mo
$583,333.00
$ 120,166,598
Unit Rate By Duke
Haul Road Construction
500
LF
$60.00
$ 30,000
Unit Rate By Duke
Excavation of Pond Ash and Loading in Trucks
16,832,522
CY
$8.43
$ 141,898,160
Unit Rate By Duke
Excavation of Residual Adjacent and Subsurface Soils and Loading in Trucks
359,773
CY
$10
$ 3,597,730
Unit Rate By Duke
Hauling, Placement, and Compaction of Pond Ash and Residual Soils to
Offsite Landfill
17,192,295
CY
$14.50
$ 249,288,278
Unit Rate By Duke
Paved Haul Road Repair
79,200
LF
$120
$ 9,504,000
Truck Wash
1
LS
$150,000.00
$ 150,000
Truck wash necessary to clean tires and undercarriage of trucks for over -the -road hauling. ROM costs based on experience with Duke facilities.
SUBTOTAL ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
$ 525,468,100
SUBTOTAL FINAL CLOSURE CONSTRUCTION COST
$ 592,419,056
Estimate Mobilization Cost (2.5% of Final Closure Construction Cost)
$ 14,810,476
OTHER COST
Design, Permitting and CQA
Closure Design/Engineering/Permitting (5% of Final Closure Construction
Costs)
1
LS
$ 29,620,952.82
$ 29,620,953
Construction Quality Assurance (CQA) (5% of Final Closure Construction
Costs)
1
LS
$ 29,620,952.82
$ 29,620,953
Subtotal Design, Permitting and CQA
$ 59,241,906
Post Closure Operations and Maintenance (analysis based on 30 year duration)
Landfill Area Maintenance
30
YR
$ 341,671
$ 10,250,130
Estimate at $3475.8/acre/year of capped area.
Landfill Area Monitoring
0
YR
$ -
Subtotal Post Closure Operations and Maintenance
$ 10,250,130
Additional Costs
Contingency (15% of Final Closure Construction Costs)
1
LS
$ 91,084,430
$ 91,084,430
Amec Foster Wheeler experience from previous projects
Subtotal Additional Costs
$ 91,084,430
TOTAL OPINION OF PROBABLE CLOSURE COST
$ 767,805,998
Rough Order of Magniture Cost Estimate
OPINION OF PROBABLE CLOSURE COST PER CY
$ 45.61
Based on Volume Placed in landfill
OPINION OF PROBABLE CLOSURE COST PER TON
$ 38.01
Based on Moist Unit Weight of 1.2 Tons/CY
OPINION OF PROBABLE CLOSURE COST PER ACRE
$ 3,441,533
Based on Estimated Closue Area
ESTIMATED QUANTITIES
Description
Estimated Landfill Property Area:
Estimated Landfill Development Area (including buffer and borrow area):
Estimated Lined Landfill Area:
Estimated West Ash Basin Closure Area:
Estimated WAB Restoration Area (after ash removal):
Estimated Ash Material Removed/Hauled Volume:
Estimated Ash Material Removed/Hauled Moist Wt:
Estimated Contaminated Soil Removed/Hauled Volume (WAB):
Estimated Contaminated Soil Removed/Hauled Moist Wt:
Total Estimated Ash and Contaminated Soil Removed/Hauled Volume:
Total Estimated Ash and Contaminated Soil Removed/Hauled Moist Wt:
Total Estimated Ash and Contaminated Soil Placed in Landfill Volume:
Estimate Notes:
1. This estimate is represented as Rough Order of Magnitude (ROM).
Est Quantity Units
108 Acres
108 Acres
98 Acres
223 Acres
223 Acres
16,832,522 CY
20,199,026 Tons (bsed on 1.2 Tons/CY Moist Unit Wt)
359,773 CY
539,660 Tons (based on 1.5 Tons/CY Moist Unit Wt)
17,192,295 CY
20,738,686 Tons (based on Moist Unit Wt )
13,753,836 Tons (based on 0.8 x Volume Hauled )
Page 1 of 2

REv 1/15/19
Roxboro EAB Closure Option 4 - Closure by Removal (On -Site new Landfill)
Closure Option Opinion of Probable Cost (ROM)
Duke Energy - Roxboro Steam Station
Person County, NC
Quantity
Unit
Unit Cost
Total Cost
Estimate Note
GENERAL
Surveying
223
Acres
$ 2,000
$ 446,200
Excavate and remove, including off -site disposal of existing storm water structures/piping. Price at $8k/day at 5 days per week for 4 weeks.
Abandon WAB Discharge Outlet Structures/Piping
1
EA
$ 200,000
$ 200,000
Unit Rate By Duke
SUBTOTALGENERAL
$ 646,200
EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
West Ash Basin Sediment Control and Stormwater Management
223
Acres
$14,000.00
$ 3,123,400
Unit Rate By Duke
Permanent Stabilization Measures
223
Acres
$3,787.00
$ 844,880
Unit Rate By Duke
SUBTOTAL EROSION/SEDIMENT CONTROL AND STORMWATER MANAGEMENT
$ 3,968,280
EARTHWORK
Ash Basin Earthwork
Construction Entrance
50
LF
$65
$ 3,250
Amec Foster Wheeler experience based on $20/LF for 12-inch thick ABC and supporting geotextile at 20-foot width.
Clearing and Grubbing
Acres
$5,000
$ -
Clear and remove vegetation including trees, brush, shrubs.
Breaching Main Dam
1
LS
$1,000,000
$ 1,000,000
Unit Rate By Duke
Earthwork Cut to Fill
CY
$6.87
$ -
Unit Rate By Duke
Topsoil Stripping
Acres
$4,000.00
$ -
Unit Rate By Duke
Regrading Material; if required (18-inch thick un-compacted fill, source
material off -site)
517,154.0
CY
$11
$ 5,574,920
Unit Rate By Duke
Topsoil Material; if required (6-inch thick un-compacted fill, source material
off -site)
172,384.7
CY
$11
$ 1,858,307
Unit Rate By Duke
$ -
Landfill Earthwork
Landfill Construction
98.3
Acres
$400,000
$ 39,320,000
Unit Rate By Duke
Landfill Closure
98.3
Acres
$150,000
$ 14,745,000
Unit Rate By Duke
SUBTOTAL EARTHWORK
$ 62,501,477
ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
Temporary Dewatering (Ash Basin) Free Water
2
Mo
$416,667.00
$ 833,334
Unit Rate By Duke
Temporary Dewatering (Ash Basin) Construction Water
206
Mo
$583,333.00
$ 120,166,598
Unit Rate By Duke
Haul Road Construction
500
LF
$60.00
$ 30,000
Unit Rate By Duke
Excavation of Pond Ash and Loading in Trucks
16,832,522
CY
$8.43
$ 141,898,160
Unit Rate By Duke
Excavation of Residual Adjacent and Subsurface Soils and Loading in Trucks
359,773
CY
$10
$ 3,597,730
Unit Rate By Duke
Hauling, Placement, and Compaction of Pond Ash and Residual Soils to
Landfill Area A Landfill
17,192,295
CY
$4
$ 60,173,033
Unit Rate By Duke
Truck Wash
1
LS
$150,000.00
$ 150,000
Truck wash necessary to clean tires and undercarriage of trucks for over -the -road hauling. ROM costs based on experience with Duke facilities.
SUBTOTAL ASH BASIN DEWATERING, EXCAVATION, HAULING AND PLACEMENT
$ 326,848,855
SUBTOTAL FINAL CLOSURE CONSTRUCTION COST
$ 393,964,811
Estimate Mobilization Cost (2.5% of Final Closure Construction Cost)
$ 9,849,120
OTHER COST
Design, Permitting and CQA
Closure Design/Engineering/Permitting (5% of Final Closure Construction
Costs)
1
LS
$ 19,698,240.57
$ 19,698,241
Construction Quality Assurance (CQA) (5% of Final Closure Construction
Costs)
1
LS
$ 19,698,240.57
$ 19,698,241
Subtotal Design, Permitting and CQA
$ 39,396,481
Post Closure Operations and Maintenance (analysis based on 30 year duration)
Landfill Area Maintenance
30
YR
$ 341,671
$ 10,250,130
Estimate at $3475.8/acre/year of capped area.
Landfill Area Monitoring
0
YR
$ -
Subtotal Post Closure Operations and Maintenance
$ 10,250,130
Additional Costs
Contingency (15% of Final Closure Construction Costs)
1
LS
$ 60,572,090
$ 60,572,090
Amec Foster Wheeler experience from previous projects
Subtotal Additional Costs
$ 60,572,090
TOTAL OPINION OF PROBABLE CLOSURE COST
$ 514,032,633
Rough Order of Magniture Cost Estimate
OPINION OF PROBABLE CLOSURE COST PER CY
$ 30.54
Based on Volume Placed in landfill
OPINION OF PROBABLE CLOSURE COST PER TON
$ 25.45
Based on Moist Unit Weight of 1.2 Tons/CY
OPINION OF PROBABLE CLOSURE COST PER ACRE
$ 2,304,046
Based on Estimated Closue Area
ESTIMATED QUANTITIES
Description
Estimated Landfill Property Area:
Estimated Landfill Development Area (including buffer and borrow area):
Estimated Lined Landfill Area:
Estimated West Ash Basin Closure Area:
Estimated WAB Restoration Area (after ash removal):
Estimated Ash Material Removed/Hauled Volume:
Estimated Ash Material Removed/Hauled Moist Wt:
Estimated Contaminated Soil Removed/Hauled Volume (WAB):
Estimated Contaminated Soil Removed/Hauled Moist Wt:
Total Estimated Ash and Contaminated Soil Removed/Hauled Volume:
Total Estimated Ash and Contaminated Soil Removed/Hauled Moist Wt:
Total Estimated Ash and Contaminated Soil Placed in Landfill Volume:
Estimate Notes:
1. This estimate is represented as Rough Order of Magnitude (ROM).
Est Quantity Units
108 Acres
108 Acres
98 Acres
223 Acres
223 Acres
16,832,522 CY
20,199,026 Tons (bsed on 1.2 Tons/CY Moist Unit Wt)
359,773 CY
539,660 Tons (based on 1.5 Tons/CY Moist Unit Wt)
17,192,295 CY
20,738,686 Tons (based on Moist Unit Wt )
13,753,836 Tons (based on 0.8 x Volume Hauled )
Page 2 of 2

ATTACHMENTS
Attachment C - Closure Options Evaluation Scoring
Matrix

REv 1/15/19
Site Name: Roxboro East Ash Basin (EAB)
Threshold Criteria: All closure options must comply with the following threshold criteria based on Duke Energy Guiding
Principals for Ash Basin Closure
1. Provide continued geotechnical stability meeting appropriate safety factors under applicable loading conditions
2. Provide flow capacity and erosion resistance during design storm and flooding conditions
3. Effectively mitigate groundwater impacts (in conjunction with GW remediation where present)
4. Comply with applicable state and federal regulations (e.g. North Carolina Coal Ash Management Act)
Scoring for Evaluation of Closure Options
Closure Options Evaluation Worksheet
Ash Basin Closure - Master Programmatic Document
Duke Energy
= Option -Specific User Input
1 = Calculated Value
Environmental Protection and Impacts
Weight:
30%
.
Refer to
This Area Not Used For Interpretation of Environmental Modeling Results
Modeled Plume Intersecting Surface
EM Sub -Scoring Sheet
24%
7.20%
Groundwater Impact Beyond the Current
Refer to
This
Area Not Used For Interpretation of Environmental Modeling Results
Compliance Boundary
EM Sub -Scoring Sheet
24%
7.20%
Refer to
This Area Not Used For Interpretation of Environmental Modeling Results
Modeled Off -site Impact
EM Sub -Scoring Sheet
24%
7.20%
Relative rank based on visual interpretation of
Refer to
This
Area Not Used For Interpretation of Environmental Modeling Results
modeled boron plume
EM Sub -Scoring Sheet
13%
3.90%
Interpolation. Zero miles
Air emissions off -site (based on miles driven)
scores 10.
Truck miles driven
Miles
764,784
27,231,731
10
0
10
10
5%
1.50%
Interpolation. Zero gallons
Air emissions on -site (based on miles driven)
scores 10.
Truck miles driven
Miles
5,594
5,594
0
0
0
0
5%
1 1.50%
Interpolation. Zero acres
Disturbed acres of
Avoidance of greenfield disturbance
scores 10.
greenfield
lAcres
21
1 107.9
10
0
10
0
5%
1.50%
MIL1,1q, I pqL
1.74
1.83
1.94
1.9
Cost
Weight:
35%
eldic4drell4w-
-• Mr.
Closure Cost
I
Interpolation. Min value
Closure Cost
($million)
USD
$ 26.90
$ 757.56
10.0
0.0
9.7
3.5
80%
28.00%
scores 10. Max value
OM&M Cost
Operation, Maintenance and Monitoring Cost
scores 0.
($million)
USD
$ 6.60
$ 10.30
10.0
0.0
6.8
0.1
20%
7.00%
•
3.50
0.00
3.19
1.0
Schedule
Weight:
15%
-
Interpolation Minimum
Time to move first
Initiation Time
value scores 10
ash
Years
2.1
2.5
10
0
0
0
30%
4.50%
Interpolation Minimum
Construction Duration
value scores 10
Estimated durations
Years
4.4
16.9
10
0
10
0
1 70%
1 10.50%
1 of 3

REv 1/15/19
Site Name: Roxboro East Ash Basin (EAB)
Scoring for Evaluation of Closure Options
Closure Options Evaluation Worksheet
Ash Basin Closure - Master Programmatic Document
Duke Energy
= Option -Specific User Input
1 = Calculated Value
• -
1.50
0.00
1.05
0.0
Regional Factors
Weight:
15%
•
•
Plan or potential for beneficial reuse of site
Subjective
Not Used For Subjective Scoring
•
•
5%
0.75%
Interpolation Min value
scores 10 Max value
Imported soil needs
scores 0
Soil Imported
CY
• • : • . • •
246,667
1,323,901
8
0
10
0
5%
0.75%
Interpolation. Maximum
Beneficial reuse of CCR
value scores 10.
Fraction Used
CY
• • • •
0
0
0
0
0
0
0%
0.00%
Interpolation Min value
scores 10 Max value
Transportation impact (based on miles driven)
scores 0
Miles Driven
Miles
• • •:
770,378
27,231,731
10
0
10
10
65%
9.75%
Noise impact due to on -site activity (based on
proximity of neighbors to on -site work areas)
View impact (based on final height of storage facilityNot
Subjective 0 to 10
Used For Subjective Scoringand
im
5%
0.75%
land uses within viewshed)
Subjective 0 to 10
20%
3.00%
•
1.41
0.04
1.31
1.0
Constructability
Weight:
5%
M71rConsider
6w�
Subjective 0 to 10: 10 is
stormwater management, geotechnical,
the easiest while 0 is the
Not Used For Subjective Scoring
and dewatering
riskiest
100%
5.00%
0.50
1 0.00 1
0.25
1 0.00
. • . •
8.65
1.87
7.74
3.9
2 of 3

REv 1/15/19
Criteria for Evaluation of Closure Options
Closure Options Evaluation Worksheet
Ash Basin Closure - Master Programmatic Document
Duke Energy
Threshold Criteria: All closure options must comply with the following threshold criteria based on Duke Energy Guiding
Principals for Ash Basin Closure
1. Provide continued geotechnical stability under applicable loading conditions and safety factors
2. Provide flow capacity and erosion resistance during design storm and flooding conditions
3. Effectively mitigate groundwater impacts
4. Comply with applicable state and federal regulations (e.g. North Carolina Coal Ash Management Act)
Category
Criterion
Guidance
Modeled Plume Intersecting Surface Water
Refer to scoring system on Environmental Modeling (EM) Sub -Scoring worksheet.
Groundwater Impact Beyond the Current Compliance Boundary
Refer to scoring system on Environmental Modeling (EM) Sub -Scoring worksheet.
Modeled Off -site Impact
Refer to scoring system on Environmental Modeling (EM) Sub -Scoring worksheet.
Relative rank based on visual interpretation of modeled boron plume
Refer to scoring system on Environmental Modeling (EM) Sub -Scoring worksheet.
Air emissions off -site
Based on truck miles driven for hauling CCR and soil.
Air emissions on -site from closure implementation
Based on total cubic yards of cut and fill on site as a surrogate for gallons of fuel
consumed.
Avoidance of greenfield disturbance
Refer to Scoring System and Required Input columns on scoring sheet.
Capital Cost
From rough order -of -magnitude cost estimate or detailed cost estimate.
Operation, Maintenance and Monitoring Cost
Initiation Time
From preliminary schedule for designing, permitting, bidding and constructing the
option.
Construction Duration
Plan or potential for beneficial reuse of site
Refer to Scoring System and Required Input columns on scoring sheet.
Imported soil needs
Refer to Scoring System and Required Input columns on scoring sheet.
Beneficial reuse of CCR
Refer to Scoring System and Required Input columns on scoring sheet.
Transportation impact
Based on truck miles driven for hauling CCR and soil.
Noise impact due to on -site activity
Based on proximity of neighbors to specific on -site work areas.
View impact
Based on final height of storage facility and land uses within viewshed.
Consider stormwater management, geotechnical, and dewatering
Subjective and relative comparison to other options
3of3

Environmental Groundwater Sub -scoring Worksheet
Closure Options Evaluation
Duke Energy
REv 1/15/19
16 Roxboro East Ash Basin Groundwater
Sub -Scoring Document
Station/Plant Name: Roxboro Steam Electric Plant
Scored . 1 •
Evaluation Criteria:
Criteria 1. Modeled Plume Intersecting Surface Water
Score
Modeled plume' does not intersect surface waters after 10 years
10
Modeled plume' does not intersect surface waters after 100 years
5
Modeled plume' does not intersect surface waters after 200 years
0
(Option 1)
(Option 2)
(Option 3)
(Option 4)
Closure by Removal
Closure -in -place
Closure by Removal
Closure -in -Place
(off -site disposal)
H brid
(on -site new landfill)
Criteria
1 Score
10
10
10
10
Criteria 2. Groundwater Impact Beyond the current 2 Compliance Boundary
Score
Modeled plume' is within current compliance boundary after 10 years
10
Modeled plume' is within current compliance boundary after 100 years
5
Modeled plume' is within current compliance boundary after 200 years
0
(Option 1)
(Option 2)
(Option 3)
(Option 3)
Closure by Removal
Closure -in -place
Closure by Removal
Closure -in -Place
off -site disposal)
(Hybrid)
on -site new landfill
Criteria 2 Score
0
0
0
0
Criteria 3. Modeled Off -site Impact
Score
Modeled plume' does not go off -site
10
Modeled plume' is predicted to remain off -site after 100 years
5
Modeled plume' is predicted to remain off -site after 200 years
0
(Option 1)
(Option 2)
(Option 3)
(Option 4)
Closure by Removal
Closure -in -place
Closure by Removal
Closure -in -Place
off -site disposal)
(Hybrid)
on -site new landfill
Criteria 3 Score
10
10
10
10
Criteria 4. Relative rank based on visual interpretation of modeled boron plume
Score
Ranked #1 among the three Closure Options based on visual interpretation of modeled boron plume
10
Ranked #2 among the three Closure Options based on visual interpretation of modeled boron plume
5
Ranked #3 among the three Closure Options based on visual interpretation of modeled boron plume
0
(Option 1)
(Option 2)
(Option 3)
(Option 4)
Closure by Removal
Closure -in -place
Closure by Removal
Closure -in -Place
(off site disposal)
(Hybrid)
on -site new landfill
1
10
5
9
• - • on • data at the time of •modeled plume considered boron at a
c• • of 1 1 1 or
1 1 1 does n•t represent
a remediationgoal, •weverthis
concentration
does r- •

Environmental Groundwater Sub -scoring Worksheet
Closure Options Evaluation
Duke Energy
REv 1/15/19
(Option 1)
(Option 2)
(Option 3)
(Option 4)
Justification Notes
Closure -in -Place
Closure by Removal (off -site disposal)
Close -in -Place Hybrid
Closure by Removal (on -site new landfill)
Criteria 1. Modeled Plume Intersecting Surface
10
10
10
10
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Water
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
boron concentrations for the Closure -in -Place scenario with natural
boron concentrations for the Closure -in -Place scenario with natural
boron concentrations for the Closure -in -Place scenario with natural
boron concentrations for the Closure -in -Place scenario with natural
attenuation does not show boron of 4,000 ppb or greater intercepting surface
attenuation does not show boron of 4,000 ppb or greater intercepting surface
attenuation does not show boron of 4,000 ppb or greater intercepting surface
attenuation does not show boron of 4,000 ppb or greater intercepting surface
water bodies.
water bodies.
water bodies.
water bodies.
Criteria 2. Groundwater Impact Beyond the Current
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Compliance Boundary
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
boron concentrations for the Closure -in -Place scenario with natural
boron concentrations for the Closure- by Removal scenario with natural
boron concentrations for the Close -in -Place Hybrid scenario with natural
boron concentrations for the Closure- by Removal scenario with natural
attenuation show boron of 4,000 ppb at the current (2018) compliance
attenuation show boron of 4,000 ppb at the current (2018) compliance
attenuation show boron of 4,000 ppb at the current (2018) compliance
attenuation show boron of 4,000 ppb at the current (2018) compliance
boundary in the vicinity of (a, Point 1) east of the east ash basin in the
boundary northeast of the ash basin (c, Point 3) in the transition zone. (>100
boundary northeast of the ash basin (c, Point 3) in the transition zone. (>100
boundary northeast of the ash basin (c, Point 3) in the transition zone. (>100
transition zone. (>200 years from 2017)
years from 2017)
years from 2017)
years from 2017)
Criteria 3. Modeled Off -site Impact
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
Based on the predictive model for the year 2017, found in the January 2019
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
version of the Preliminary Updated Revised Groundwater Flow and Transport
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
Modeling Report for Roxboro Steam Electric Plant, East Ash Basin, simulated
boron concentrations for the Closure -in -Place scenario with natural
boron concentrations for the Closure by Removal scenario with natural
boron concentrations for the Close -in -Place Hybrid scenario with natural
boron concentrations for the Closure by Removal scenario with natural
attenuation does not show boron of 4,000 ppb or greater off of Duke Energy
attenuation does not show boron of 4,000 ppb or greater off of Duke Energy
attenuation does not show boron of 4,000 ppb or greater off of Duke Energy
attenuation does not show boron of 4,000 ppb or greater off of Duke Energy
property.
property.
property.
property.
Criteria 4. Relative rank based on visual
0
10
5
9
Based on review of the predictive model for the year 2017, found in the
Based on a review of boron concentrations found in the January 2019
Based on a review of boron concentrations found in the January 2019
Based on a review of boron concentrations found in the January 2019
interpretation of modeled boron plume
January 2019 version of the Preliminary Updated Revised Groundwater Flow
Preliminary Updated Revised Groundwater Flow and Transport Modeling
Preliminary Updated Revised Groundwater Flow and Transport Modeling
Preliminary Updated Revised Groundwater Flow and Transport Modeling
and Transport Modeling Report for Roxboro Steam Electric Plant, East Ash
Report for Roxboro Steam Electric Plant, this scenario is marginally better than
Report for Roxboro Steam Electric Plant, this scenario is marginally better than
Report for Roxboro Steam Electric Plant, this scenario is marginally better than
Basin, this scenario is not marginally better than option 2/4 Closure by
Option 4 (identical except landfills on -site), Closure in Place and Options 3
Option 1 Closure -in -Place.
Option 4 (identical except landfills on -site), Closure in Place and Options 3
Removal or Options 3 Close -in -Place Hybrid.
Close -in -Place Hybrid.
Close -in -Place Hybrid.
Notes:
1. Based on avaliable data at the time of scoring, the modeled plume considered boron at a concentration of 4,000 ug/I or greater; 4,000 µg/L does not represent a remediation goal,
however this concentration does represent the EPA Tap Water Regional Screening Level (RSL) in resident tapwater for boron.
2. The current compliance boundary, as of 10/9/18, was used for all scenarios for criteria 2.