NC0038377_Update to Existing Application 2014_20141015

' VDUKE Mayo Steam Plant
ENERGY. Duke Energy Progress
' PROGRESS 10660 Boston Road
Roxboro, NC 27574
October 13, 2014
��EIVE���EN�DWR
' Mr. Jeffrey O. Poupart R
North Carolina Department of Environment and Natural Resources 5 �Qti4
North Carolina Division of Water Resources
' 1617 Mail Service Center water Quaoon
Raleigh, NC 27699 -1617 ?8�0 ►n9
IFile: 12520B -1
Subject: Duke Energy Progress, Inc.
Mayo Electric Generating Plant
NPDES Permit No. NC0038377
Update to existing NPDES application and NPDES application under review
Person County
Dear Mr. Poupart:
The current NPDES permit for the Mayo Electric Generating Plant (Mayo) located in Person
County expired on March 31, 2012. Since the facility submitted a timely renewal request
including EPA Form 1, EPA Form 2C and EPA Form 2F, all in triplicate, the site continues to
operate under, and be covered by, an administratively extended NPDES permit.
As several years have passed since the original submittal of NPDES permit renewal requests,
Duke Energy Progress, Inc. (Duke) is providing this update to our active and pending NPDES
applications. This update is in addition to the update provided on May 1, 2013. This update
consists of:
1. An update to EPA Form 1 originally submitted on September 28, 2011. Duke Energy
Progress, Inc. ( "Duke ") subsequently submitted a request for name change to
NCDENR which was approved on July 10, 2013.
2. An updated line drawing in accordance with EPA Form 2C Item 11 -A (An update to
attachment 2 in the renewal application submitted on September 28, 2011). This
includes modifications to outfall 004, 005 and outfall 006.
3. An updated narrative description of wastewater treatment processes and disposal as
required by EPA Form 2C Item II -B (An update to attachment 3 in the renewal
application submitted on September 28, 2011.
4. An updated list of chemicals in accordance with EPA Form 2C Item VI "Potential
Discharges not covered by analysis" (An update to attachment 4 in the renewal
application submitted on September 28, 2011).
5. A seep characterization and monitoring plan for the site in accordance with the terms
agreed upon between Duke and NC DENR.
6. A groundwater monitoring plan.

7. A groundwater receptor survey.
8. A generalized groundwater flow directional map.
' UPd ates to the application for storm water coverage currently P ermitted by the subject permit are
' being sent to staff of the North Carolina Division of Energy, Minerals and Land Resources.
Since the last renewal submittal in 2011 Duke has made major investments in the site and has
' completed construction of a monofill to accept coal combustion products handled in dry form,
completed upgrades to handle bottom ash in dry form and expects to soon commission a partial
zero liquid discharge system (thermal evaporator) which will eliminate any discharge from the
' FGD blowdown system via outfall 009. As described in previous NPDES application update
dated May 1, 2013, Duke requests that outfall 009 remain in the permit as a permitted outfall in
case future technology allow for FGD wastewater to be treated to meet permit limits.
If there are any questions regarding the enclosed information, please contact Shannon Langley at
(919) 546 -2439.
I certify, under penalty of law, that this document and all attachments were prepared under my
' direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons it-ho manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
' and complete. 1 am aivare that there are significant penalties far submitting false information,
including the possibility of f nes and imprisonment for knowing violations.
Sincerely,
William J. Thacker — Plant Manager
Mayo Electric Generating Plant
Attachments

Update to Form submitted September 26, 2011
Plaaca nnnl nr I.- Iha unchartcvi areas nniv Form Aooroved OMB No 2040 -0086.
FORM
U S ENVIRONMENTAL PROTECTION AGENCY
I EPA I D NUMBER
1
:.EPA GENERAL INFORMATION
TA =
F
Consolidated Permits Program
D
GENERAL
(Read the "(;e» era! Insimeiions" hefi)re sairring.)
,3 14 1 15
GENERAL INSTRUCTIONS
LABEL ITEMS
If a preprinted label has been provided affix it in the
- -- -
designated space Review the Information carefully if any of It
is Incorrect cross through It and enter the correct data In the
I. EPA LD NUMBER
appropnate fill -In area below Also if any of the prepnnted data
is absent (the area to the left or the label space lists the
III. FACILITY NAME
PLEASE PLACE LABEL IN THIS SPACE
information that should appear) please provide It In the proper
fill -In area(s) "low If the label Is complete and correct. you
need not complete Items I. III. V and VI (except VI -B which
V FACILITY MAILING
ADDRESS
must be completed regardless) Complete all Items If no label
has been provided Refer to the instructions for detailed deco
descnptions and for the legal authorizations under which this
VI. FACILITY LOCATION
data is collected.
Il POLLUTANT CHARACTERISTICS
INSTRUCTIONS Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer 'yes' to any questions, you must
submit this form and the supplemental form listed in the parenthesis following the question. Mark 'X' in the box in the third column if the supplemental form is attached If
you answer 'no" to each question, you need not submit any of these forms You may answer 'no' If your activity is excluded from permit requirements.. see Section C of the
instructions See also, Section D of the instructions for definitions of bold -faced terms
WNW
Mark
•x-
SPECIFIC QUESTIONS
YES
NO
ATTAACHED
SPECIFIC QUESTIONS
ves
NO
ATTAc ED
A Is this facility a publicly owned treatment works which
results in a discharge to waters of the U.S." �FORM 2A)
X
B Does or will this facility (either existing or proposed)
include a concentrated animal feeding operation or
aquatic animal production facility which results in a
g
discharge to waters of the U.S.? (FORM 28)
C Is this a facility which currently results in discharges to
�/
X
�/
X
D Is this a proposed facility (other than those described in A
X
waters of the U.S. other than those described in A or B
or B above) which will result in a discharge to waters of
above (FORM 2C)
Z,
the U.S.1 (FORM 2D)
E Does or will this facility treat store or dispose of
F Do you or will you inject at this facility industrial or
hazardous wastes? (FORM 3)
X
municipal effluent below the lowermost stratum
X
containing within one quarter mile of the well bore
g
x
underground sources of drinking water? (FORM 4)
r
n
G Do you or will you inject at this facility any produced water
H Do you or will you inject at this facility fluids for special
or other fluids which are brought to the surface in
processes such as mining of sulfur by the Frasch process,
connection with conventional oil or natural gas production,
X
solution mining of minerals in situ combustion of fossil
X
inject fluids used for enhanced recovery of oil or natural
fuel, or recovery of geothermal energy) (FORM 41
gas or inject fluids for storage of liquid hydrocarbons"
(FORM 4)
F
e
I. Is this facility a proposed stationary source which is one
J Is this facility a proposed stationary source which is
of the 28 industrial categories listed in the instructions and
�/
X
NOT one of the 28 industrial categones listed in the
�/
X
which will potentially emit 100 tons per year of any air
instructions and which will potentially emit 250 tons per
pollutant regulated under the Clean Air Act and may affect
year of any air pollutant regulated under the Clean Air Act
41
U
`
or be located in an attainment area? (FORM 5)
and may affect or be located in an attainment area?
(FORM 5)
III NAME OF FACILITY
1
SKIP
Mayo Electric Generating Plant
IV FACILITY CONTACT
A. NAME & TITLE (imi. first (Y rife)
8 PHONE (area c(xte & na )
2
1111111111111111111
T acker, William J. - Plant Manager
1
( 3 1 5 9 -0 1
1s
ie
xe e xa xo s1 s- ss
V FACILTY MAILING ADDRESS
A STREET OR P 0 BOX
J3 10660 Boston Road
B CITY OR TOWN
C STATE
D ZIP CODE
2404
4
17 51
J4
Roxboro
C
1C
11 C
VI FACILITY LOCATION
A STREET ROUTE NO OR OTHER SPECIFIC IDENTIFIER
5 1 660 Boston Roa
B COUNTY NAME
Person
C CITY OR TOWN
D STATE
E ZIP CODE
F COUNTY CODE (,14
s
R oro
11C
-- 4
EPA Form 3510 -1 (8-90) CONTINUE ON REVERSE

1
CONTINUED FROM THE FRONT
VII SIC CODES 4-di it. in order of non
A FIRST B SECOND
=
( specify) E_—ric 7
6rec!h')
7 4911
q
C THIRD D FOURTH
VIII OPERATOR INFORMATION
A. NAME B Is the name listed in Item
VIII -A also the owner?
a
Duke Energy Progress, Inc.
AYES ONO
C STATUS OF OPERATOR (linter the appropriate letter auo then isirerbor. of "Other "specify.)
D PHONE (area,ale & nu )
F = FEDERAL M = PUBLIC (other than federal or state)
P
(spec1h)
JA
S = STATE O = OTHER (,peof )
P = PRIVATE
se
I
to ir. :! Im :e
E STREET OR P.O BOX
I I I I I I I I I I I I I IJ
4101 South i mington Street
F CITY OR TOWN
G STATE
H. ZIP CODE JIX INDIAN LAND
Is the facility located on Indian lands"
g
Raleigh
NC
27601 ❑ YES ❑ NO
4^
a' 51
4'
X EXISTING ENVIRONMENTAL PERMITS
D PSD .air F.mi.ssrons ni Pro aed.krurces
A. NPDES Dischar j.s to Sur ace Water
g
N
NCO038377
g
FPTI
8. UIC I ndert;row II i ecnun olTlualc
E OTHER s ee'i i)
t
0 3 g 8 3 9
(spe1•th) Title v air permit
9
U
9
•e
+a x
15
!e
+e �
C RCRA H+cardwi. W'asres)
E OTHER ,err )
c j (gpectft) state nor. discharge permit for ash
9
R
NCD000830612
g WQ0000020 reuse
n
!e
++
+e »
1s is +a n
XI MAP
Attach to this application a topographic map of the area extending to at least one mile beyond property boundaries. The map must show the outline of the facility. the
location of each of its existing and proposed intake and discharge structures, each of its hazardous waste treatment, storage or disposal facilities and each well where it
injects fluids underground Include all springs rivers, and other surface water bodies in the map area See instructions for precise requirements
XII NATURE OF BUSINESS (provide a briefdescnpbon)
The Mayo Electric Generating Plant (Mayo) is a dual boiler coal fired electric generating plant with a net
generating capacity of 745 megawatts.
XIII CERTIFICATION (see instructions)
1 certify under penalty of law that I have personally examined and am familiar with the information submitted in this application and all attachments and that. based on my
inquiry of those persons immediately responsible for obtaining the information contained in the application. I believe that the information is true accurate. and complete I
am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment.
A. NAME & OFFICIAL TITLE (ripe or print) B
William Thacker
SIGNATURE
C DATE SIGNED
Plant Manager
COMMENTS FOR OFFICIAL USE ONLY
C
s
a
EPA Form 3510 -1 ( 8-90)

16 Outfall 002
Evaporation
11 Cooling Towers 10 Mayo Reservoir
Outfall 001
14 2 1
14
Misc. Equipment Heat 18
Intake Structure
Exchangers
13 Alternate 26
Ash Sluice
�
Water
112
Condensers
Fire
Protection
Boiler & Turbine Condensate
-� Storage
Evap and seepage
Ash Basin
Outfall Gypsum and
See Page 009 Limestone Pile
2 and 3 of 7 23 15 Runoff 17
Coal Pile Access Road Storm Secondary Containment
rFGD Blowdown Runoff Water, Power block SW, For anhydrous ammonia
Highway 501 runoff, tanks
rainfall
5
Storm water
3
Raw Water
Treatment
4
Water Storage
Ion Exchange
Potable water from
City of Roxboro
Potable &
Sanitary
Svstems
Sewage
treatment
Oily Waste
Treatment
--17
8
Misc. low
Volume
Duke Energy Progress, Inc.
Mayo Steam Electric Plant
Person County, NC
Schematic of Water Flow
Page 1 of 7 October 2014

Water balance detail for FGD WW
treatment system (bioreactor) and
Cooling System only

A
Mayo Reservoir
Ash basin
FFGD Make -up Pumps
,
,
o'
`t 27
>'
O.
> 28
c Evaporation FGD System
N ,
m,
E,
W
,
Excess Monofill leachate Settling Pond
Bottom Ash Silo 1 30
,
,
,
,
,
36 ;
,
,
38 (alternate)
Dry bottom ash
seal water
in
,
37
,
,
Cooling Towers
,
,
33
,
Fly Ash Silos 34 Thermal Evaporator 32 Demin- Bioler
31 Clean Distillate Make-up
(Conditioning Water) p
35 Cooling water
Monofill
Dust
Rainfall suppression
38
Proposed Water balance detail
for thermal evaporator
and Dry bottom Ash system
38

A
Potential Dust
Groundwater
suppression
Storm water
irrigation
Outfall 004
Storm water
Mayo Reservoir
Switchyard
Outfalls
runoff to 006a
006a, b, c, d
and e
Potential
Cooling Tower
Drift
Outfall 005
Potential Dust
Groundwater
• suppression
Storm water
irrigation
Duke Energy Progress, Inc.
Proposed Water balance detail
Mayo Steam Electric Plant
for thermal evaporator
Person County, NC
and Dry bottom Ash system
Schematic of Water Flow
Page 4 of 7 October 2014

' Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NC0038377
Attachment 2
Page 5 of 7
I Form 2C - Item II -A Flows, Sources of Pollution, and Treatment Technologies
(Table Corresponds to Page 1 of 7)
Stream
Estimated Average Flow
Comments
1
19 MGD
Make up water from Mayo Reservoir.
2
13.7 MGD
Cooling Tower make up.
3
0.36 MGD
Raw Water treatment
4
0.002 MGD
Sewage treatment plant
5
0.00175 MGD
Raw water treatment backwash
6
0.36 MGD
Treated water to water storage
7
300 GPM (Max. rate)
Oily waste (infrequent) to ash pond
8
1.5 MGD
Low volume waste to ash pond
9
0.05 MGD at start up
Boiler blowdown to ash pond
10
2 MG /event 1 /yr.
Cooling Tower basin drain to Mayo
Reservoir
11
9 MGD
Evaporation from Cooling Tower
12
3.9 MGD
Ash Transport (limited) /Cooling Tower
Blowdown
13
Variable as needed
Intermittent blowdown of circulating
(blowdown)
water from heat exchangers
14
8.5 MGD (re- circulating flow)
Heat exchanger (primary route)
15
0.0135 MGD (annual daily
Coal pile Runoff
average)
16
10.2 MGD
Outfall 002 discharge to Mayo
Reservoir.
Secondary containment for SCR
17
chemicals
18
11.1 MGD
Make up Water to Heat Exchangers
23
0.20 MGD
Bioreactor Discharge
to Polishing Pond
October 2014

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Permit Number NC0038377
26 variable Cooling Tower Blowdown
* - The Facility was constructed to utilize either Stream 12 or 26 for cooling tower blowdown.
Currently, Stream 12 is used because this flow path allows for the sluicing of ash with the cooling
tower blowdown water. In the future when the facility goes to dry ash handling Stream 26 will be
used for cooling tower blowdown, occasional wet sluicing of fly ash will occur during periods of
maintenance on the dry fly ash handling system.
October 2014

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NC0038377
' Attachment 2
Page 6 of 7
' Form 2C - Item II -A Proposed Flows, Sources of Pollution, and Treatment Technologies
(Table Corresponds to Page 2 of 6)
Stream
Estimated Average Flow
Comments
2
13.7 MGD
Current Cooling Tower Make Up
10
2 MG /event 1 /yr.
Cooling Tower basin drain to Mayo
Reservoir
11
9 MGD
Evaporation from Cooling Tower
12
3.9 MGD
Ash Transport (limited)
13
Variable as needed
(blowdown)
Intermittent blowdown of circulating
water from heat exchangers
14
8.5 MGD (re- circulating flow)
Heat exchanger (primary route)
16
10.2 MGD
Outfall 002 discharge to Mayo
Reservoir.
18
11.1 MGD
Make up Water to Heat Exchangers
19
1.9 MGD
Make up Water to FGD System
20
1.55 MGD
Evaporation from FGD System
21
0.35 MGD
FGD Blowdown to Settling Pond
22
0.35 MGD
Bioreactor Intake from Settling Pond
23
0.35 MGD
Bioreactor Discharge
to Polishing Pond
24
2.6 MGD
Proposed Cooling Tower make up.
25
19.0 MGD
Make up water from Mayo Reservoir.
26
Variable
Cooling Tower Blowdown*
* - The Facility was constructed to utilize either Stream 12 or 26 for cooling tower blowdown.
Currently, Stream 12 is used because this flow path allows for the sluicing of ash with the cooling
tower blowdown water. In the future when the facility goes to dry ash handling Stream 26 will be
used for cooling tower blowdown, occasional wet sluicing of fly ash will occur during periods of
maintenance on the dry fly ash handling system.
October 2014

j' Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NC0038377
' Attachment 2
Page 7 of 7
Form 2C - Item II -A Proposed Flows, Sources of Pollution, and Treatment Technologies
Future FGD Waste water System Flow Schematic
(Table Corresponds to Page 3 of 7)
Stream
Estimated Average Flow
Comments
27
1.9 MGD
Make -up to FGD System
28
1.55 MGD
Evaporation
29
0.35 MGD
FGD System Blowdown to FGD
Settling Pond
30
0.35 MGD
Intake to ZLD System
31
0.4 MGD
Clean Distillate Discharge to Boiler
Water Make -up
32
0.4 MGD
Clean Distillate Discharge to Cooling
Tower or FGD System
33
0.04 MGD
Brine Solution to Ash Silo to condition
dry ash for transport to monofill
34
seasonal variability
Monofill leachate to FGD settling pond
35
seasonal variability
Stormwater from ZLD Island
36
3000 gpm
ZLD cooling water
37
600 gpm Max
Dry bottom ash seal water
38
600 gpm Max
Bottom ash conditioning or sent to
scrubber
October 2014

'
Duke Energy Progress, Inc.
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Permit Number NCO038377
1
Attachment 3
'
Form 2C - Item II -B Flows, Sources of Pollution, and Treatment Technologies
The Mayo Electric Generating Plant is a coal -fired electric generating plant with one unit rated at a
maximum dependable capacity of 745 mw. The plant is located in Person County, North Carolina and
uses No. 2 fuel oil for start up and stabilization of the boiler flame. Water is withdrawn from the Mayo
' Reservoir as required to make up evaporative losses from the cooling tower, FGD Scrubber and boiler
water needs. Makeup pumping rates from the reservoir are highly variable depending upon natural
weather conditions, generation load, plant operations, and evaporative loss.
' Chemical constituents contained in the discharges from this facility will, in part, be representative of the
naturally occurring chemical quality of the intake water. The discharges will also have chemical
constituents of such quality and quantity associated with similar discharges for fossil generating facilities
' of this size, type, and in this geographical location. Either all or part of the elements enumerated in the
Periodic Table, either singularly or in any combination, may from time to time be contained in this
discharge. More detailed descriptions of the individual discharges described below.
OUTFALL 001 - COOLING TOWER SYSTEM
Approximately once per year the cooling tower basin and closed cycle cooling water system is
drained to dewater the system for maintenance. The majority of the water is pumped to the ash
pond. Also approximately 2 MG is drained to the reservoir to dewater the system for
maintenance. That discharge is monitored and reported to the state through the monthly
Discharge Monitoring Report (DMR) (Outfall 001).
OUTFALL 002 — ASH POND TREATMENT SYSTEM
The ash pond receives ash transport water, coal pile runoff, various storm water flows, cooling
tower blowdown, and various low volume wastes such as boiler blowdown, air pre- heater wash
water, boiler wash water, precipitator wash, oily waste treatment, wastes /backwash water from
water treatment processes, plant area wash down water, and equipment heat exchanger water.
The sewage treatment plant also discharges to the ash pond. The ash pond provides treatment
by sedimentation, oxidation, neutralization, equalization, and adsorption. A standpipe allows for
overflow release to a small secondary - settling basin for release into Mayo Reservoir. Due to alga
blooms, the pH of ash pond discharge canal is adjusted at the standpipe as needed. Vacuumed
sediments from catch basins and sumps may be transferred to the ash basin. There are
engineered toe drains from the ash pond dam.
Ash Transport Water — During the brief and infrequent time the dry fly ash handling system may
be out of service, water for sluicing fly ash and bottom ash to the ash pond is withdrawn from the
closed cycle cooling water system. The water in the closed cycle cooling water system is treated
with a dispersant for protection of the cooling tower fill.
Y ASH HANDLING
Dry Fly Ash Handling
The plant has made an upgrade converting from primarily wet sluicing fly ash to primarily dry
handling of fly ash. Dry fly ash handling is the primary method of fly ash disposal. Fly ash is
handled dry by a pneumatic system and sent to the ash silo. After being stored in the silo for a
October 2014
Mayo Electric Generating Plant Page 1

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Permit Number NCO038377
short period of time the dry fly ash is loaded into trucks and is transported offsite to a permitted
monofill. If the dry ash handling system is out of service during plant operation periods, fly ash
will be sent to the ash pond via the ash sluice system until the dry system is restored. Such
occurrences are infrequent and brief. A project is scheduled to be completed in 2016 to provide
redundancy to the Dry Flay ash handling facility eliminating all wet sluicing of fly ash in the future.
Dry Bottom Ash Handlinq
The plant has converted the bottom ash handling system from a wet sluicing system to a system
for handling bottom ash dry. Bottom ash is handled dry by a pneumatic system and sent to the
ash silo. After being stored in the silo for a short period of time the dry bottom ash is loaded onto
trucks and is transported offsite to a permitted monofill.
Coal Pile Runoff — The coal pile runoff is routed to the ash pond. Flow volumes are related to
rainfall frequency and intensity. The annual daily average flow is based on a coal pile area of 30
acres, an annual average rainfall of 44 inches and a runoff coefficient of 0.85.
Cooling Tower Blowdown — Historically, ash transport water withdrawal from the closed cycle
cooling water system was sufficient to control total dissolved solids JDS) in the cooling water
and served as cooling tower blowdown. Going forward, with the conversion to dry ash handling,
Cooling tower blowdown rates will be determined by the rate needed to maintain desired water
chemistry in the cooling water. Also during periods of maintenance, the cooling tower basin is
drained to the reservoir (See outfall 001).
Limestone and Gypsum Piles — Storm water that falls on the limestone and gypsum storage piles
is directed to the ash pond.
Low Volume Wastes —
' Oily Wastes — Drains containing oily wastes or water are routed to the oily waste basin.
The discharge from the oily waste basin is routed through the oil —water separator where
the oil is removed and contained. The treated water is then discharged to the ash pond.
The fuel oil storage tank is in a containment area with a valve drain. The drain is routed
to the oily waste basin. The collected oil is then managed and burned as used oil
according to the requirements of the facilities Title V Air Permit.
Boiler Blowdown — The boiler water is treated with ammonia continuously when the
boilers are in service. Sodium hydroxide is used when needed during abnormal
conditions. Boiler blowdown is routed to the ash pond via the low- volume waste
conveyance.
Water Treatment Wastes — Boiler make -up water and water for other uses is withdrawn
from the lake, treated by various processes, including clarification, sand filtration, carbon
filtration, and demineralization / reverse osmosis. Finished water is stored in tanks until
needed. Various wastes generated from the water treatment such as filter backwash, and
spent regeneration chemicals such as sulfuric acid and sodium hydroxide are routed to
the ash pond via the low volume waste conveyance. The plant's Reverse Osmosis
system produces a reject waste stream of approximately 150 gpm.
Miscellaneous — Other miscellaneous sources such as wash -down water, water from
various plant drains, secondary containment drains, laundry activity and temporary hand
washing stations are routed to the ash pond via the low volume waste conveyance.
October 2014
Mayo Electric Generating Plant Page 2

' Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NCO038377
Miscellaneous equipment heat exchanger water can be routed to the ash pond via the
alternate cooling tower blowdown line if needed. The air pre- heaters and boilers are
water washed infrequently. The wastewater from the air pre- heaters wash and boiler
wash activity is discharged to the ash pond. During periods of maintenance, some
' molybdate waste from the closed cycle cooling water system is routed to the ash pond.
Flue Gas Desulfurization Blowdown (Existing) — The Flue Gas Desulfurization (FGD)
' system directs flue gas into an absorber where limestone (calcium carbonate) slurry is
sprayed. Sulfur dioxide in the flue gas reacts with the limestone slurry to produce
calcium sulfate (gypsum). This system reclaims any unreacted limestone slurry to be
' reused in the absorber. A small blowdown stream is used to maintain the chloride
concentration in the reaction tank. The blowdown stream is discharged to a FGD settling
pond where suspended solids are reduced prior to entering a bioreactor. The bioreactor
utilizes microbes to reduce soluble contaminants to insoluble forms that then precipitate
' from solution. The treated wastewater (bioreactor effluent Outfall 009) enters the ash
pond secondary settling pond prior to outfall 002. An emergency overflow from the FGD
settling pond to the ash pond exists.
' Flue Gas Desulfurization Blowdown (future) — The Flue Gas Desulfurization (FGD)
system directs flue gas into an absorber where limestone (calcium carbonate) slurry is
sprayed. Sulfur dioxide in the flue gas reacts with the limestone slurry to produce
' calcium sulfate (gypsum). This system reclaims any unreacted limestone slurry to be
reused in the absorber. A small blowdown stream is used to maintain the chloride
concentration in the reaction tank. The blowdown stream will be discharged to the FGD
settling pond where suspended solids are reduced. The discharge of the settling pond
' will be treated in a thermal evaporation, partial zero liquid discharge (ZLD) system.
The ZLD concentrates the wastewater stream through the use of both mechanical
and steam energy to evaporate the water. The concentrated wastewater will be
' used for moisture conditioning of fly ash prior to being sent to a landfill. Clean
distillate from the process will be utilized within the plant to partially replace water
withdraw from Mayo Lake. The ZLD system will remove the FGD blowdown stream
from outfall 002. An emergency overflow from the FGD settling pond to the ash pond
' exists.
Sewage Treatment Plant (STP) — Sanitary wastes are treated on -site by an extended aeration
' treatment plant. The plant is designed for 0.0125 MGD and consists of a screen, commutator,
surge tank, aeration tank, clarifier, chlorine contact chamber, and a sludge holding tank. Flow
from the system is dependent upon fluctuating demand due to variations in the number of
personnel on site. When needed, residuals are disposed of off -site by a licensed contract
' disposal firm. The STP effluent is routed to the ash pond via the alternate cooling tower
blowdown line.
' Miscellaneous Storm water- Various storm water flows from the generating facility are routed to
the ash pond. These include storm water from the power block, the rail line and the newly
constructed back access road.
' ASH MANAGEMENT AND RECLAMATION
From time to time fly and bottom ash in the ash pond may be stacked or relocated within the
diked boundary of the ash pond system to optimize treatment and storage.
' October 2014
Mayo Electric Generating Plant Page 3

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
National Pollutant Discharge Elimination System Permit Number NCO038377
structural steel and concrete truck washout area. The concrete truck washout area is controlled to
ensure no free flowing liquid leaves the area or come in contact with any storm drains. Once the
washed out concrete is cured /dried, the cured concrete is properly disposed. Due to mobile
equipment utilization there is a potential for petroleum release. Additionally, groundwater flow
and potentially flows from dust suppression activities may flow to outfall 004.
Outfall 005 — Drainage from Industrial Area — Main
Outfall 005 is located on the northeast side of the facility and is the end point of the plant's
primary storm sewer system that drains the "power house block" of the plant using catch basins,
storm sewer and vegetated conveyance. This drainage area includes areas around the boilers
and turbine buildings (both are open, no roof or walls), precipitators, and the roofs of the machine
shops, administrative buildings, warehouse, parking lot, and miscellaneous support facilities, such
as the water supply treatment, ash storage silos, selective catalytic reduction (SCR) and
transformers. Also draining to this outfall through sewers is the grassed area intended for Unit 2
at some time in the future. The grassed Unit 2 area is sometimes utilized for fabrication of
structural steel for construction / maintenance projects. This area consists of gravel and grass
areas. For outfall 005 the potential pollutants could be coal, coal ash, sediment, and the chemical
make -up of the rain water. Due to mobile equipment utilization there is a potential for petroleum
release. Additionally, groundwater flow and potentially flows from dust suppression activities may
flow to outfall 005.
Outfall 006x, b, c, d, e, - Cooling Tower Area
Outfall 006 is located at the eastern end of the site and drains the area around the cooling tower,
' including the roof of the chemical feed building and associated roads and parking areas using
catch basins, storm sewer and vegetative conveyance. In the cooling tower area, there are five
separate outfalls. These outfalls involve catch basins and storm sewers that drain to swales and
then to reservoir. For this outfall the potential pollutants could include sediment, mist from the
cooling tower and chemical make -up of the rainwater. A malfunction of the cooling tower basin
level and / or the cooling tower make -up system could result in a potential release of cooling
tower water. Due to mobile equipment utilization there is a potential for petroleum release. On
' rare occasions herbicides are used for ground maintenance at the cooling towers. Additionally,
groundwater flow and potentially very small flows from cooling tower drift may flow to outfall 006.
Flow from the switchyard may reach outfall 006a.
1
' October 2014
Mayo Electric Generating Plant Page 5

' Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NCO038377
Form 2C — Item VI — Potential Discharges Not Covered By Analysis
Chemical
Estimated Average
Frequency
Purpose
Annual Usage
Aluminum sulfate
1,000 gals.
As required
Improve clarifier
floc
Polymer
100 lbs.
As required
Improve clarifier
floc
Sodium hydroxide
275,000- 715,000
As required
pH Control
15 -50%
gallons.
Sodium molybdate
1,100 tbs.
As required
Corrosion control
Aqua ammonia
25,000 lbs.
As required
Boiler water
H control
Sodium bicarbonate
10,000 tbs.
As required
pH control
Water based non-
7,000 lbs.
As required
Biofouling control
oxidizing agent
Silicone or organic
100,000 — 350,000
As required
Defoamer treatment
based
gals.
Antifoam
defoamer /antifoam
Dispersant (acrylic
17,000 lbs.
As required
Biofouling control
acid polymer)
Anhydrous
450,000 gals.
As required
Air pollution
Ammonia
treatments stem
Sulfuric acid
50,000 lbs.
As required
pH control
Sanuril Chlorine
100 tbs.
Continuous
Sewage plant
Tablets
effluent treatment
Limestone (Calcium
270,400 tons
Continuous
Flue Gas
Carbonate)
Desulfuization
Dispersant
1,275 gals.
Continuous
Corrosion control
hos honic acid)
Water Treatment
1,400 gals.
As required
Metals Precipitation
Additive (Metclear)
Magnesium
10 lbs /ton of coal
As required
Boiler Slagging
Hydroxide
Calcium Carbonate
10 lbs /ton of coal
As required
Boiler Slagging
Kleen MCT 103
50 gals.
As required
R.O. system
cleaning
Kleen MCT 411
50 gals.
As required
R.O. system
cleaning
' October 2014 Page 1

Duke Energy Progress, Inc.
Mayo Electric Generating Plant
' National Pollutant Discharge Elimination System Permit Number NCO038377
' October 2014 Page 2
Chemical
Estimated Average
Frequency
Purpose
Annual Usage
Kleen MCT 511
50 gals.
As required
R.O. system
cleaning
Hypersperse MDC
450 gals.
As required
R.O. system
150
treatment
Hydrated Lime
1,875 tons
As required
Air pollution
treatment system /
Corrosion Control
Inhibitor
6,000 gals.
As required
FGD scale control
Dis erant
3,000 gals.
As required
FGD scale control
Mercontrol 8034
Variable
As required
Hg re- emission
control
Mercontrol 8034
Variable
As required
Hg re- emission
Plus
control
Clean Coal
Approximately
Continuous
Nitrous Oxide
0.4% per ton of coal
control
M45 -PC Additive A
Clean Coal
Approximately
Continuous
Mercury control
M45 -PC Additive B
0.0005% per ton of
coal
Tetrasodium EDTA
10,000- 25,000
As required
30 -60%
gallons
Dibasic Acid (added
Variable — As
As required
Maintain FGD
May 2013)
needed
wastewater ORP
Activated Carbon
Variable — As
As required
Hg re- emission
(added May 2013)
needed
mitigation
Anhydrous calcium
10,000 - 50,000 lbs.
As required
Thermal evaporator
sulfate
operations.
Sodium Sulfite 5-
40,000- 100,000
As required
50%
gallons
Sodium Bisulfite 5-
40,000- 100,000
As required
Chlorine Scavenger
60%
gallons
93 -98% Sulfuric
30,000- 45,000
As required
Thermal evaporator
Acid
gallons
NALCO OOPGO07
? ? ? ??
As required
Antifoam
Antiscalant — Polymer
60,000- 90,000
As required
Thermal evaporator
blend of sodium salt
gallons
Scale control
of
phosphonomethylated
diamine
' October 2014 Page 2

41P
synTerra
SEEP MONITORING REPORT -
AUGUST 2014
FOR
MAYO STEAM ELECTRIC PLANT
10600 BOSTON ROAD
ROXBORO, NORTH CAROLINA 27574
PERSON COUNTY
NPDES PERMIT #NC0038377
PREPARED FOR
DUKE ENERGY PROGRESS, INC.
RALEIGH, NORTH CAROLINA
j DUKE
7
ENERGY.
PROGRESS
SUBMITTED: OCTOBER 2014
SEAL
1425
O
�F c1- OG�S
Oh,a ,,,0%. SEAL S
X328
N \N.
'""NiSM
, NC PG 1425
ject Geologist
S NC PG 1328
roject Manager

Seep Monitoring Report October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
TABLE OF CONTENTS
SECTION PAGE
EXECUTIVE SUMMARY
1.0 Introduction ....................................................................................... ..............................1
2.0 Seep Monitoring ............................................................................... ............................... 2
2.1 Seep Identification ...................................................................... ............................... 2
2.2 Seep Flow Measurement ............................................................ ............................... 2
2.3 Seep Sample Collection .............................................................. ............................... 3
3.0 Recommendations ............................................................................. ..............................4
List of Figures
Figure 1- Site Location Map
Figure 2 - Identified Seeps and Water Quality Sample Locations
List of Tables
Table 1 - Seep Locations and Descriptions
Table 2 - Seep Flows and Analytical Results
Table 3 - Analytical Parameters /Methods
List of Appendices
Appendix A - Analytical Sample Handling, Preservation and
Holding Time Requirements
Page
P: \Duke Energy Progress.1026 \ALL NC SITES\NPDES Permit Deliverables\ Mayo\ Seep Report \Mayo Seep
Monitoring Report.doxx

Seep Monitoring Report October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
EXECUTIVE SUMMARY
The following report summarizes an evaluation of the Mayo Steam Electric Plant (Mayo
Plant) seepage flow surrounding the ash basin toward Crutchfield Branch and Mayo
Lake. The evaluation included a detailed site reconnaissance to identify potential seeps
followed by the collection of flow measurements and representative water quality
samples at select locations. The site reconnaissance was conducted during March 2014.
Representative seep locations were evaluated for water quality and flow rates on
August 27, 2014.
Wastewater discharges from the ash basin are permitted by the North Carolina
Department of Environment and Natural Resources (NCDENR) Division of Water
Resources (DWR) under National Pollution Discharge Elimination System (NPDES)
Permit NC0038377. The purpose of the evaluation was to determine additional
potential outfalls for inclusion within the permit.
Five seep locations were identified during wet weather conditions in early spring of
2014. Two of these locations are the west and east toe drains. The remaining three
identified seep locations were dry in August 2014 and could not be sampled. Two
additional samples were collected downstream of the two toe drain locations in August
2014. One additional sample was collected from wastewater in the active ash basin.
One additional sample was collected from an upstream surface water body which flows
to Hyco Lake.
The low volume of water characteristic of the seeps coupled with the relatively low
constituent concentrations in the samples, suggest that there is little potential to
influence water quality of Crutchfield Branch and Mayo Lake. If reasonable potential
analyses demonstrate that there is no potential to exceed water quality standards, then
Duke Energy proposes to re- evaluate the seep locations listed in this document
annually over the next five -year permit cycle. These annual evaluations would be
documented and would verify the condition of the existing seeps and determine the
presence of new seeps. DWR will be promptly notified if any new seeps are identified
or any significant changes are observed for the existing seeps. If any existing or newly
identified seeps are determined to reach Crutchfield Branch and Mayo Lake and the
seepage has reasonable potential to exceed a water quality standard, Duke Energy will
take measures to either (1) stop the seepage, (2) capture and route the seep so that it is
discharged through a NPDES permitted outfall, or (3) address the seep using Best
Management Plans approved by DWR.
P: \Duke Energy Progress.1026 \ALL NC STIES \NPDES Permit Deliverables \Mayo \Seep Report \Mayo Seep
Monitoring Report.docc

Seep Monitoring Report October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
1.0 INTRODUCTION
Duke Energy Progress, Inc. owns and operates the Mayo Steam Electric Plant (Mayo
Plant) located on approximately 2,200 acres in northern North Carolina near Roxboro,
North Carolina. A large portion of the plant acreage encompasses Mayo Lake, a
reservoir formed when Mayo Creek was dammed. The Mayo Plant is located in Person
County along the west bank of Mayo Lake, north of Roxboro, east of Boston Road, and
south of the North CarohnaNirginia state border. The site location is shown on Figure
1.
The Mayo Plant began operations in 1983 with a single -unit, coal -fired steam turbine.
Ash generated from coal combustion has been stored on -site in an ash basin. Dry ash
has also been transported to the Roxboro Plant for disposal in a lined landfill. It is
anticipated that beginning in Fall 2014, dry ash will be placed on -site in a lined landfill.
' Wastewater discharges from the ash basin are permitted by the North Carolina
Department of Environment and Natural Resources (NCDENR) Division of Water
' Quality (DWQ) under National Pollution Discharge Elimination System (NPDES)
Permit NC0038377.
This report summarizes an evaluation of seepage flows associated with the Mayo Plant
' ash basin. The evaluation included a detailed site reconnaissance to identify potential
seeps, flow measurements of identified seeps, and collection of seep water and other
surface water with chemical analysis of collected samples. The site reconnaissance was
conducted in March 2014. Seep sampling and flow measurements were conducted on
' August 27, 2014.
1 Page 1
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IMonitoring Report.docx

Seep Monitoring Report October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
2.0 SEEP MONITORING
2.1 Seep Identification
A detailed reconnaissance of the outside perimeter of the ash basin present at the Mayo
Plant was conducted in March 2014 for the purpose of identifying and locating potential
seeps originating from the ash basin. Identified seeps were described, photographed,
noted on a field map, and surveyed as to location using GPS (Table 1). Identified seeps
were further evaluated on August 27, 2014. During the August evaluation, it was
observed that three of the seeps identified in February 2014 were dry, reflecting an
intermittent or seasonal nature. The locations of seeps identified are presented on
Figure 2.
2.2 Seep Flow Measurement
Flow measurements were made in August 2014 at water - bearing seep locations using
either a Son -Tek F1owTracker ® Acoustic Doppler Velodmeter or the timed - volumetric
method. The F1owTracker® measures stream velocity and discharge using sound
waves. The timed- volumetric method was used at four locations where the flow was
constrained in a location that prevented the F1owTracker® from recording a signal
without interference.
' The timed- volumetric method was employed by collecting a volume of water from the
discharge of the seep directly into an appropriately sized container (graduated cylinder
or bucket). The entire seep flow was routed to the container. The amount of time (in
' seconds) required to collect a known volume of water was recorded. A minimum of
five timed volumes were recorded and the flow rate for the seep was calculated based
on an average of the timed volume measurements.
The F1owTracker® was used to measure seep flows at two locations. The method is
designed for streams that can be waded following established procedures such as the
U.S. Geological Survey standards. Use of the FlowTracker® was generally limited to
channels of sufficient width (approximately 0.5 feet or greater) and depth
(approximately 0.17 feet or greater). Flow measurements (water velocity and depth)
within quality control bounds of the instrument were recorded manually for estimation
of discharge at a seep.
Locations were selected where channel banks were fairly parallel. The channel width
was measured at the water line and recorded. If the channel width was less than one
foot, the average depth was recorded and three velocity measurements were taken. The
average of the three velocity measurements and the channel volume (depth and width)
were used to calculate the flow rate at a given location.
Page 2
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Monitoring Report.docx

Seep Monitoring Report October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
If the channel width at the water line was between 1.0 and 2.5 feet, velocity and depth
were recorded at a minimum of three locations spaced evenly across the channel. If the
channel width was between 2.5 and 5 feet, velocity and depth were recorded at a
' minimum of five evenly spaced locations.
Consistent with USGS methodology, velocity measurements were collected at 60% of
water depth.
The averages of the calculated flows (in MGD) for seeps with measurable flow in
' August 2014 are included in Table 2. Seepage flow is generally variable. Flow may
increase or decrease depending on the amount of rainfall, groundwater levels, weather
conditions, and other variables.
' 2.3 Seep Sample Collection
Six locations with sufficient water for sample recovery were sampled during August
' 2014 for water quality analysis. The sample locations are described in Table 1 and
shown on Figure 2.
' To prevent dilution from stormwater runoff into seep flows, samples were collected
during a period preceded by low precipitation. For the week preceding the August
' sample collection, 0.37 inches of rain fell in the area as recorded at the Person County
Airport (Roxboro, NC), located about fifteen miles south of the Mayo Plant.
' Samples were collected from the seep flows directly into sample containers with the
exception of the sample from location 5-04. A peristaltic pump and disposable tubing
were used to sample S -04 to sample turbidity at this location. For the directly sampled
locations, care was taken to avoid disturbing and entraining particulate soil and
sediment. During sample collection, in -situ field parameters (temperature, pH, and
' specific conductance) were measured utilizing a YSI Pro Plus multi- function meter.
Turbidity was also measured in the field using a Hach 2100P turbidimeter.
' Laboratory analyses were conducted by Duke Energy Analytical Laboratory and Pace
Analytical Laboratories (NC Wastewater Certifications #248 and 12). A summary of the
laboratory and field data is provided in Table 2. A listing of analytical parameters and
' associated methods are included in Table 3. Sample handling, storage, and
preservation methods are summarized in Appendix A.
1
Page 3
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IMonitoring Report.dooc

Seep Monitoring Report October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
3.0 RECOMMENDATIONS
The very low flow of water characteristic of each seep location suggests minimal
potential to influence water quality in Crutchfield Branch and Mayo Lake. If ongoing
analyses demonstrates that there is no potential to exceed water quality standards,
Duke Energy proposes to re- evaluate the identified seep locations listed in this
document annually over the next five -year permit cycle. These annual evaluations
would be documented and would verify the condition of the existing seeps and
determine the presence of any newly developed seeps. DWR will be promptly notified
if new seeps are identified or any significant changes are observed for the existing
seeps. If any existing or newly identified seeps are determined to reach Crutchfield
Branch or Mayo Lake and the seepage has reasonable potential to exceed a water
quality standard, Duke Energy will take measures to either (1) stop the seepage, (2)
capture and route the seep so that it is discharged through a NPDES permitted outfall,
or (3) address the seep using Best Management Plans approved by DWR.
I Page 4
P: \Duke Energy Progress.1026 \ALL NC SITES \NPDES Permit Deliverables\ Mayo\ Seep Report\Mayo Seep
Monitoring Report.docx

FIGURES

rjl
_ PROPERTY BOUNDARY
pr
hr ti >
Z,
pp
�� y �,J �'�� � -�," 1 'i 1. � =rte.,.- ..�,�-, mot` ` - �_C 1'� "'� J.. ��. 1 •�;, � ,� �,
I - - '��{• --� `."7ii -i ?Uf 1 � • � � 446
WASTE i�4P ter
1 BOUNDARY
: 500' COMPLIANCE
BOUNDARY r
1 •. I
-_ `• . sp.'s . _ i ,�.. - -
14, "mac; r� �g --� � � - ~`-'....�.•''Y�I_ / `+c. � ,
��. � �' 3 , r �,..� � .. \ I - jam' � � �, -.. t I ' - •
Syr �. _ � ��• �'�il '`�.- 1 ~:\ 1„t,�- �y';`;> : <a r� i
J t+1 � .,�� "\ ,may •/ -� Paf: y 1
`,
`1 _..il J - ���� �� -�\ 'l � °tl' \�� =ff. `, .' � �' `S.j�.s � )t •� . z "� y� -. f _
SOURCE:
uSGS TOPOGRAPHIC MAP OBTAINED FROM THE NRCS GEOSPATIAL DATA ?
GATEWAY AT http>7datagateway rres.usda gov' -�= _-
MAYO LMCE POWER PLANT
' PERSON NTY FIGURE 1
SITE LOCATION MAP
MAYO STEAM ELECTRIC PLANT
10600 BOSTON RD
1 Terra CLU STER ROXBORO, NORTH CAROLINA
SPRINGS, VA QUADRANGLE
143 RIVER STREET. SUITE 220
GREENVILLE. SOUTH CAROLINA PRAWN Sv s MANAGER KATHY COTE Yv1a10-08 GRAPHIC SCALE
' PHONE [phone] PROJECT F* I kSlT NA N, MAP DA CONTOUR i 1987 ,L sore 1000 0 1000 2000
www.synterracorp.com uvouT `Ta s,sPeuxwlioR� MAP b11E suet
Y as Sae ard. rtasva '�1 11. .

TABLES

= = = = M = M M = = = = = = = = s
TABLE 1
SEEP LOCATIONS AND DESCRIPTIONS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, INC., ROXBORO, NORTH CAROLINA
SEEP ID
LATITUDE
LONGITUDE
FLOW
DESCRIPTION
DESCRIPTION
Outfall 004
36.52931
- 78.88899
Continuous
Stormwater Outfall 004; appears to flow towards Mayo Lake,
Outfall 005
36.52775
- 78.88810
Continuous
Stormwater Outfall 005; appears to flow towards Mayo Lake.
S -01
36.53890
- 78.89351
Continuous
West toe drain; appears to flow towards Crutchfield Branch.
S -02
36.53890
- 78.89341
Continuous
East toe drain; appears to flow towards Crutchfield Branch.
S -02A
36.53801
- 78.89161
Intermittent
Seepage area about 20 feet upslope from east toe drain; flowing in March, no flow in August; some iron
staining.
S -02B
36.53800
- 78.89137
Intermittent
Seepage and runoff area upslope from east toe drain where water flows beaneath rip rap along tree line;
flowin in March; no flow in August.
S -03
36.53865
- 78.89071
Continuous
Flow from channel downstream of East toe drain; appears to flow towards Crutchfield Branch.
S -04
36.53890
- 78.89341
Continuous
Flow from channel downstream of West toe drain; appears to flow towards Crutchfield Branch.
S -06
36.52197
- 78.88526
Continuous
Flow that originates south of plant; appears to flow towards Mayo Lake.
S -07
36.52180
- 78.89215
Intermittent
Seepage area downslope from former production well location; flow present In March, no flow present in
August; flow towards southeast where it appears to merge with flow towards Mayo Lake (S -06).
WASTEWATER
SAMPLE ID
LATITUDE
LONGITUDE
FLOW
DESCRIPTION
DESCRIPTION
S -05
36.535039
- 78.891693
F Ash Basin
Water sample collected from southeast side of ash basin.
Pranararl hv' lAW Checked bv: KWW
Page 1 of 1
i,: \Duke Energy Progress. 1026\ALL NC SITES \NPDES Permit Dehverdbles \Mayo \Seep Report\Tables \Table 1 - Seep Locations and Descriptions

TABLE 2
SEEP FLOWS AND ANALYTICAL RESULTS, AUGUST 27, 2014
MAYO STEAM ELECTRIC PLANT
ROXBORO, NORTH CAROLINA
NM - Not Measured
NF - Flow not present during this sampling event or too low to be measured
TV - Timed Volume
AV - Area Velocity
MGD - Million Gallons Per Day
=Appears to flow to Crutchfield Branch
Appears to flow to Mayo lake
P: \Duke Energy Progress.1026\ALL NC SITES \NPDES Pennit Deliverables \Mayo \Seep Report\Tables \Table 2 - Seeps Analytical Rleglisl4ifid
MAP ID S -01
S -02
S -02 Duplicate
5-03
S -04
S -OS
Flow
MGD 0.00106 0.05261 0.00410
0.00362
0.00362
0.02456
NF
NM U.O110Z
Flow Measurement Method
TV TV TV
TV
TV
AV
--
-- AV
Od & Grease
mg /L < 5.0
< 5.0
5.0
< 5.0
5.0
< 5.0
COD
mg /L 20
mg /L 58
mg/l. 0.15
1 20
< 20
20
< 20
< 20
Chloride
Fluoride
95
< 0.1
95
0.1
66
0.14
52
0.16
94
0.30
Sulfate
mg/ L 46
47
47
36
41
61
Mercury (Hg)
Aluminum (Al)
ug /L < 0.05
mg /L 0.020
0.05
0.009
< 0.05
0.008
0.05
0.066
0.05
0.124
< 0.05
0.021
Barium (be)
mg /L 0.126
0.165
0.161
0.067
0.144
0.073
Boron (B)
mg /L 1.51
1.67
1.63
1.34
1.28
2.13
Calcium (Ca)
mg /L 23.2
mg /L(CaCO3) 90.0
31.9
139
31.4
137
29.6
120
22.2
86.9
48.6
187
Hardness
Iron (Fe)
mg /L 13.4
4.08
3.97
0.485
11.4
0.028
Magnesium (Mg)
mg /L 7.80
14.5
14.1
11.3
7.65
15.9
Manganese (Mn)
mg /L 2.78
2.37
2.32
1.07
3.18
0.020
0.005
1
Zinc (Zn)
mg /L < 0.005
0.014
0.013
< 0.005
0.005
Antimony (Sb)
ug /L < 1
< 1
1
1
1
Arsenic (AS)
Cadmium (Cd)
uq /L 2.64
ug /L < 1
< 1
< 1
1
1
< 1
< 1
1.97
1
3.03
1
1
Chromium (Cr)
ug /L < 1
< 1
< 1
1
1
-Copper (Cu)
ug /L < 1
1
1
1
1
1.56
Lead (Pb)
ug /L < 1
ug /L < 1
< 1
1
< 1
1
1
Molybdenum (Mo)
< 1
1
1
- 1
14.0
Nickel (NI)
ug /L 1.20
2.41
2.04
1
1.37
1
Selenlum (Se)
ug /L 1
ug /L < 0.2
< 1
1
1
1
1
Thallium (TI) Low Level
< 0.2
1 0.2
0.2
1 0.2
< 0.2
IDS
mq /L 270
330
330
250
250
380
TSS
mq /L 7.0
5
5
5
22
5
PH
Temperature
Specific conductance
s.u. b.2
°C 19
US /cm 447
S.7
17
477
5.7
17
477
6.4
19
396
6.3
25
405
8.4
27
514
Tur6ldlty
NTU 1.21
1.87
1.87
3.25
12.4
1.81
NM - Not Measured
NF - Flow not present during this sampling event or too low to be measured
TV - Timed Volume
AV - Area Velocity
MGD - Million Gallons Per Day
=Appears to flow to Crutchfield Branch
Appears to flow to Mayo lake
P: \Duke Energy Progress.1026\ALL NC SITES \NPDES Pennit Deliverables \Mayo \Seep Report\Tables \Table 2 - Seeps Analytical Rleglisl4ifid

TABLE 3
SEEP ANALYTICAL METHODS
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, INC., ROXBORO, NORTH CAROLINA
PARAMETER
METHOD
REPORTING
LIMIT
UNITS
LAB
COD
HACH 8000
20
mg /L
Duke Energy
Aluminum (Al)
EPA 200.7
0.005
mg /L
Duke Energy
Antimony (Sb)
EPA 200.8
1
ug /L
Duke Energy
Arsenic (As)
EPA 200.8
1
ug /L
Duke Energy
Barium (Ba)
EPA 200.7
0.005
mg /L
Duke Energy
Boron (B)
EPA 200.7
0.05
mg /L
Duke Energy
Cadmium (Cd)
EPA 200.8
1
ug /L
Duke Energy
Calcium (Ca)
EPA 200.7
0.1
mg /L
Duke Energy
Chloride
EPA 300.0
5
mg /L
Duke Energy
Chromium (Cr)
EPA 200.8
1
ug /L
Duke Energy
Copper (Cu)
EPA 200.8
1
ug /L
Duke Energy
Fluoride
EPA 300.0
1
mg /L
Duke Energy
Hardness
EPA 200.7
0.19
mg /L (CaCO3)
Duke Energy
Iron (Fe)
EPA 200.7
0.01
mg /L
Duke Energy
Lead (Pb)
EPA 200.8
1
ug /L
Duke Energy
Magnesium (Mg)
EPA 200.7
0.05
mg /L
Duke Energy
Manganese (Mn)
EPA 200.7
0.005
mg /L
Duke Energy
Mercury (Hg)
EPA 245.1
0.05
ug /L
Duke Energy
Molybdenum (Mo)
EPA 200.8
1
ug /L
Duke Energy
Nickel (Ni)
EPA 200.8
1
ug /L
Duke Energy
Oil and Grease
EPA 1664B
5.0
mg /L
Pace Analytical
Selenium (Se)
EPA 200.8
1
ug /L
Duke Energy
Sulfate
EPA 300.0
5
mg /L
Duke Energy
TDS
SM2540C
25
mg /L
Duke Energy
Thallium (TI) Low Level
EPA 200.8
0.2
ug /L
Duke Energy
TSS
SM2540D
5
mg /L
Duke Energy
Zinc (Zn)
EPA 200.7
0.005
mg /L
Duke Energy
Prepared By: RBI Checked By: KWW
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APPENDIX A
' ANALYTICAL SAMPLE HANDLING,
' PRESERVATION, AND HOLDING TIME
REQUIREMENTS

Parameter name
Containerl
Preservation 3
Maximum holding
time'
Table IB— Inorganic Tests:
1. Acidity
P FP, G
Cool. :56 'C'"
14 days
2. Alkalinity
P, FP, G
Cool, 56 'Cte
14 days.
4. Ammonia
P FP G
Cool. 56 'C".. HSO, to pH <2
28 days
9. Biochemical oxygen demand
P, FP, G
Cool. 56 'C18
48 hours.
10. Boron
P FP, or Quartz
HNO3 to pH <2
6 months
11. Bromide
P, FP, G
None required
28 days.
14. Biochemical oxygen demand, carbonaceous
P FP G
Cool. 56 'C"
48 hours
15. Chemical oxygen demand
P, FP, G
Cool, 56'C78, H2SO4 to pH <2
28 days.
16. Chloride
P, FP, G
None required
28 days.
17. Chlorine, total residual
P, G
None required
Analyze within 15
minutes.
21. Color
P. FP, G
Cool. 56 'C"
48 hours.
23 -24. Cyanide, total or available (or CATC) and free
P, FP, G
Cool, :56 'C18, NaOH to pH >105
14 days.
8, reducing agent if oxidizer
present
25. Fluoride
P
None required
28 days
27. Hardness
P, FP, G
HNO3 or H2SO4 to pH <2
6 months.
28. Hydrogen ion (pH)
R FP, G
None required
Analyze within 15
minutes
31, 43. Kjeldahl and organic N
P, FP, G
Cool, 56'C18, H2SO4 to pH <2
28 days.
Table IB— Metals:'
18. Chromium VI
P, FP, G
Cool, 56'C18, pH = 9.3-9 72'
28 days.
35. Mercury (CVAA)
P. FP G
HNO3 to pH <2
28 days
35. Mercury (CVAFS)
FP, G; and FP-
5 mUL 12N HCl or 5 mUL BrCI"
90 days."
lined cap"
3, 5 -8, 12, 13, 19, 20, 22, 26, 29, 30, 32 -34, 36, 37, 45,
P FP. G
HNO3 to pH <2, or at least 24
6 months
47, 51, 52, 58 -60, 62, 63, 70 -72, 74, 75. Metals, except
hours prior to analysis"
boron, chromium VI, and mercury
38. Nitrate
P. FP, G
Cool, 56'C18
48 hours.
39. Nitrate - nitrite
P, FP, G
Cool. 56 'C' ", HSO, to pH <2
28 days.
40. Nitrite
P, FP, G
Coot, so °�,"
48 hours.
41. Oil and grease
G
Cool to 56'C' ". HCI or H2SO, to
28 days
PH <2
42. Organic Carbon
P, FP, G
Cool to 56'Ct8, HCl, H,SO4, or
28 days.
H3PO4 to pH <2
44. Orthophosphate
P FP. G
Cool. to <6 C""
Filter within 15 minutes
Analyze within 48
hours.
46. Oxygen, Dissolved Probe
G. Bottle and top
None required
Analyze within 15
minutes.
47. Winkler
G Bottle and top
Fix on site and store in dark
8 hours
48. Phenols
G
Cool, 56 °C", H2SO4 to pH <2
28 days.
49. Phosphorous (elemental)
G
Cool. 56 'C"
48 hours
50. Phosphorous, total
P, FP, G
Cool, 56 'C18, H2SO4 to pH <2
28 days.
53. Residue, total
P FP, G
Cool. 56 '0
7 days.
54. Residue, Filterable
P, FP, G
Cool, 56 °C1O
7 days.
55. Residue, Nonfilterable (TSS)
P. FP, G
Cool, :56 'C"
7 days.
56. Residue, Settleable
P, FP, G
Cool, 56 'C1e
48 hours.
57. Residue, Volatile
P. FP, G
Cool. 56 'C"
7 days
61. Silica
P or Quartz
Cool, <_6 °C18
28 days.
64. Specific conductance
P, FP, G
Cool. 56 'C"
28 days.
65. Sulfate
P, FP, G
Cool, :56 'C78
28 days.
66. Sulfide
P, FP, G
Cool. 56 'C", add zinc acetate
7 days.
plus sodium hydroxide to pH >9
67. Sulfite
P, FP, G
None required
Analyze within 15
minutes.
68. Surfactants
P, FP, G
Cool. <_6 'C"
48 hours
69. Temperature
P, FP, G
None required
Analyze.
73. Turbidity
P, FP, G
Cool. 56 C"
48 hours
' "P" is for polyethylene, "FP" is fluoropolymer (polytetrafluoroethylene (PTFE); Teflon "). or other fluoropolymer, unless stated otherwise
in this Table 11, "G" is glass, "PA' is any plastic that is made of a sterilizable material (polypropylene or other autoclavable plastic), "LDPE" is
low density polyethylene
'Except where noted in this Table II and the method for the parameter. preserve each grab sample within 15 minutes of collection For a
composite sample collected with an automated sample (e.g , using a 24 -hour composite sample, see 40 CFR 122.21(g)(7)(i) or 40 CFR Part
403 Appendix E), refrigerate the sample at 56 'C during collection unless specified otherwise in this Table II or in the method(s). For a
composite sample to be split into separate aliquots for preservation and/or analysis. maintain the sample at 56 'C. unless specified otherwise
in this Table 11 or in the method(s). until collection. splitting and preservation is completed Add the preservative to the sample container prior
to sample collection when the preservative will not compromise the integrity of a grab sample. a composite sample. or aliquot split from a

composite sample within 15 minutes of collection If a composite measurement is required but a composite sample would compromise sample
integrity individual grab samples must be collected at prescribed time intervals (e.g 4 samples over the course of a day. at 6 -hour intervals)
Grab samples must be analyzed separately and the concentrations averaged Alternatively. grab samples may be collected in the field and
composited in the laboratory if the compositing procedure produces results equivalent to results produced by arithmetic averaging of results of
analysis of individual grab samples. For examples of laboratory compositing procedures. see EPA Method 1664 Rev A (oil and grease) and
the procedures at 40 CFR 141.34(f)(14)(iv) and (v) (volatile organics).
'When any sample is to be shipped by common carrier or sent via the U S Postal Service, it must comply with the Department of
Transportation Hazardous Materials Regulations (49 CFR part 172). The person offering such material for transportation is responsible for
ensuring such compliance. For the preservation requirement of Table 11, the Office of Hazardous Materials. Materials Transportation Bureau.
Department of Transportation has determined that the Hazardous Materials Regulations do not apply to the following materials: Hydrochloric
acid (HCI) in water solutions at concentrations of 0.04% by weight or less (pH about 1.96 or greater, Nitric acid (HNO,) in water solutions at
concentrations of 0.15% by weight or less (pH about 1 62 or greater): Sulfuric acid (H2SO,) in water solutions at concentrations of 0 35% by
weight or less (pH about 1.15 or greater): and Sodium hydroxide (NaOH) in water solutions at concentrations of 0.080% by weight or less (pH
about 12.30 or less).
°Samples should be analyzed as soon as possible after collection. The times listed are the maximum times that samples may be held
before the start of analysis and still be considered valid. Samples may be held for longer periods only if the permittee or monitoring laboratory
has data on file to show that, for the specific types of samples under study, the analytes are stable for the longer time, and has received a
variance from the Regional Administrator under Sec. 136.3(e). For a grab sample, the holding time begins at the time of collection. For a
composite sample collected with an automated sampler (e g., using a 24 -hour composite sampler, see 40 CFR 122.21(g)(7)(i) or 40 CFR part
403, Appendix E). the holding time begins at the time of the end of collection of the composite sample. For a set of grab samples composited
in the field or laboratory, the holding time begins at the time of collection of the last grab sample in the set. Some samples may not be stable
for the maximum time period given in the table. A permittee or monitoring laboratory is obligated to hold the sample for a shorter time if it
knows that a shorter time is necessary to maintain sample stability. See 136.3(e) for details. The date and time of collection of an individual
grab sample is the date and time at which the sample is collected For a set of grab samples to be composited. and that are all collected on
the same calendar date, the date of collection is the date on which the samples are collected. For a set of grab samples to be composited, and
that are collected across two calendar dates, the date of collection is the dates of the two days: e.g., November 14 -15 For a composite
sample collected automatically on a given date, the date of collection is the date on which the sample is collected For a composite sample
collected automatically, and that is collected across two calendar dates, the date of collection is the dates of the two days: e g . November 14-
15. For static - renewal toxicity tests. each grab or composite sample may also be used to prepare test solutions for renewal at 24 h, 48 h,
and /or 72 h after first use, if stored at 0-6 'C, with minimum head space.
'ASTM D7365 -09a specifies treatment options for samples containing oxidants (e.g., chlorine). Also. Section 9060A of Standard
Methods for the Examination of Water and Wastewater (20th and 21 st editions) addresses dechlorination procedures.
'Sampling, preservation and mitigating interferences in water samples for analysis of cyanide are described in ASTM D7365 -09a. There
may be interferences that are not mitigated by the analytical test methods or D7365 -09a. Any technique for removal or suppression of
interference may be employed, provided the laboratory demonstrates that it more accurately measures cyanide through quality control
measures described in the analytical test method Any removal or suppression technique not described in D7365 -09a or the analytical test
method must be documented along with supporting data.
'For dissolved metals filter grab samples within 15 minutes of collection and before adding preservatives. For a composite sample
collected with an automated sampler (e.g . using a 24 -hour composite sampler. see 40 CFR 122.21(g)(7)(1) or 40 CFR Part 403, Appendix E),
filter the sample within 15 minutes after completion of collection and before adding preservatives. If it is known or suspected that dissolved
sample integrity will be compromised during collection of a composite sample collected automatically over time (e.g., by interchange of a metal
between dissolved and suspended forms). collect and filter grab samples to be composited (footnote 2) in place of a composite sample
collected automatically.
'Guidance applies to samples to be analyzed by GC, LC, or GC /MS for specific compounds.
91f the sample is not adjusted to pH 2, then the sample must be analyzed within seven days of sampling.
10The pH adjustment is not required if acrolein will not be measured Samples for acrolein receiving no pH adjustment must be analyzed
within 3 days of sampling.
"When the extractable analytes of concern fall within a single chemical category, the specified preservative and maximum holding
times should be observed for optimum safeguard of sample integrity (i.e., use all necessary preservatives and hold for the shortest time listed).
When the analytes of concern fall within two or more chemical categories, the sample may be preserved by cooling to 56 'C, reducing residual
chlorine with 0.008% sodium thiosulfate. storing in the dark. and adjusting the pH to 6 -9: samples preserved in this manner may be held for
seven days before extraction and for forty days after extraction. Exceptions to this optional preservation and holding time procedure are noted
in footnote 5 (regarding the requirement for thiosulfate reduction), and footnotes 12, 13 (regarding the analysis of benzidine)
121f 1,2- diphenylhydrazine is likely to be present, adjust the pH of the sample to 4.0 ±0.2 to prevent rearrangement to benzidine.
"Extracts may be stored up to 30 days at <0 'C.
"For the analysis of diphenylnitrosamine, add 0.008% NaS203 and adjust pH to 7 -10 with NaOH within 24 hours of sampling
''The pH adjustment may be performed upon receipt at the laboratory and may be omitted if the samples are extracted within 72 hours
of collection. For the analysis of aldrin, add 0.008% Na2S203
1pPlace sufficient ice with the samples in the shipping container to ensure that ice is still present when the samples arrive at the
laboratory. However. even if ice is present when the samples arrive, immediately measure the temperature of the samples and confirm that
the preservation temperature maximum has not been exceeded In the isolated cases where it can be documented that this holding
temperature cannot be met, the permittee can be given the option of on -site testing or can request a variance. The request for a variance
should include supportive data which show that the toxicity of the effluent samples is not reduced because of the increased holding
temperature Aqueous samples must not be frozen. Hand - delivered samples used on the day of collection do not need to be cooled to 0 to 6
'C prior to test initiation.
"Samples collected for the determination of trace level mercury ( <100 ng /L) using EPA Method 1631 must be collected in tightly -
capped fluoropolymer or glass bottles and preserved with BrCI or HCI solution within 48 hours of sample collection. The time to preservation
may be extended to 28 days if a sample is oxidized in the sample bottle. A sample collected for dissolved trace level mercury should be
filtered in the laboratory within 24 hours of the time of collection. However, if circumstances preclude overnight shipment, the sample should
be filtered in a designated clean area in the field in accordance with procedures given in Method 1669. If sample integrity will not be
maintained by shipment to and filtration in the laboratory. the sample must be filtered in a designated clean area in the field within the time

' period necessary to maintain sample integrity A sample that has been collected for determination of total or dissolved trace level mercury
must be analyzed within 90 days of sample collection
"Aqueous samples must be preserved at 56 'C. and should not be frozen unless data demonstrating that sample freezing does not
adversely impact sample integrity is maintained on file and accepted as valid by the regulatory authority Also. for purposes of NPDES
monitoring. the specification of °5'C is used in place of the "4 'C" and '<4 'C" sample temperature requirements listed in some methods. It is
not necessary to measure the sample temperature to three significant figures (1 /100th of 1 degree): rather, three significant figures are
specified so that rounding down to 6 'C may not be used to meet the 56 C requirement. The preservation temperature does not apply to
samples that are analyzed immediately (less than 15 minutes)
"`An aqueous sample may be collected and shipped without acid preservation. However, acid must be added at least 24 hours before
analysis to dissolve any metals that adsorb to the container walls. If the sample must be analyzed within 24 hours of collection. add the acid
' immediately (see footnote 2). Soil and sediment samples do not need to be preserved with acid The allowances in this footnote supersede the
preservation and holding time requirements in the approved metals methods
2"To achieve the 28 -day holding time. use the ammonium sulfate buffer solution specified in EPA Method 218.6 The allowance in this
footnote supersedes preservation and holding time requirements in the approved hexavalent chromium methods. unless this supersession
' would compromise the measurement, in which case requirements in the method must be followed
21Holding time is calculated from time of sample collection to elution for samples shipped to the laboratory in bulk and calculated from
the time of sample filtration to elution for samples filtered in the field.
22 Sample analysis should begin as soon as possible after receipt sample incubation must be started no later than 8 hours from time of
collection.
' 23For fecal coliform samples for sewage sludge (biosolids) only. the holding time is extended to 24 hours for the following sample types
using either EPA Method 1680 (LTB -EC) or 1681 (A -1): Class A composted, Class B aerobically digested. and Class B anaerobically digested.
2'The immediate filtration requirement in orthophosphate measurement is to assess the dissolved or bio-available form of
orthophosphorus (i.e., that which passes through a 0.45 - micron filter), hence the requirement to filter the sample immediately upon collection
(i.e., within 15 minutes of collection).
' [38 FR 28758 Oct 16, 1973

410
syn,T(erra
GROUNDWATER MONITORING PROGRAM
SAMPLING, ANALYSIS, AND REPORTING PLAN
FOR
MAYO STEAM ELECTRIC PLANT
10660 BOSTON ROAD
ROXBORO, NORTH CAROLINA 27574
NPDES PERMIT #NC0038377
PREPARED FOR
DUKE ENERGY PROGRESS, INC.
RALEIGH, NORTH CAROLINA
DUKE
ENERGY.
PROGRESS
SUBMITTED: OCTOBER 2014
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Groundwater Monitoring Program October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
TABLE OF CONTENTS
SECTION PAGE
1.0 Introduction .................................................................................................... ..............................1
2.0 Site Description .............................................................................................. ..............................2
2.1 Plant and Ash Basin Areas ...................................................................... ..............................2
2.2 Ash Basin Description ............................................................................. ............................... 2
3.0 Site Geology and Hydrogeology ................................................................. ..............................3
3.1 Geologic Framework ............................................................................... ............................... 3
3.2 Hydrogeologic Framework ..................................................................... ..............................4
4.0 Monitoring Program ..................................................................................... ............................... 5
4.1 Regulatory Requirements for Groundwater Monitoring ................... ..............................5
4.2 Description of Groundwater Monitoring System ................................ ..............................6
4.3 Monitoring Frequency ............................................................................ ............................... 7
4.4 Sample Parameters and Methods .......................................................... ............................... 7
4.5 Data Quality Objectives .......................................................................... ............................... 7
5.0 Sampling Procedures .................................................................................... ............................... 8
5.1 Sampling Equipment and Cleaning Procedures .................................. ..............................8
5.2 Groundwater Sampling ........................................................................... ..............................8
5.2.1 Development of Monitoring Wells ................................................. ............................... 8
5.2.2 Groundwater Level and Total Depth Measurements .................. ............................... 8
5.2.3 Well Purging and Sampling ............................................................ ............................... 9
5.3 Sample Collection .................................................................................... .............................10
5.4 Sample Containers, Volume, Preservation, and Holding Time ........ .............................10
5.5 Sample Tracking ...................................................................................... .............................10
5.6 Sample Labeling ...................................................................................... .............................10
5.7 Field Documentation ............................................................................. ............................... 11
5.8 Chain -of- Custody Record ....................................................................... .............................12
5.9 Sample Custody, Shipment, and Laboratory Receipt ........................ .............................12
6.0 Analytical Procedures .................................................................................. .............................14
7.0 Internal Quality Control Checks ................................................................ .............................15
8.0 Validation of Field Data Package .............................................................. .............................17
9.0 Validation of Laboratory Data .................................................................... .............................18
10.0 Report Submittal ........................................................................................... .............................19
11.0 References .................................................................................................... ............................... 20
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Groundwater Monitoring Program October 2014
' Mayo Steam Electric Plant, NPDES Permit # NC0038377 SynTerra
List of
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figures
Site Location Map
Sample Location Map
Typical Monitoring Well Construction Details
Example Groundwater Monitoring Data Sheet
Example Field Sampling Calibration Form
Chain -of- Custody Record and Analysis Request Form
North Carolina Groundwater Sampling Checklist
' List of Tables
Table 1. Monitoring Well Information
Table 2. Sample Parameters, Analytical Methods, Containers, Preservatives, and
' Holding Times
List of Appendices
' Appendix A Boring Logs and Well Construction Records
Appendix B Permit Condition A (9) Attachment XX, Version 1.0, dated
March 17, 2011
1
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Groundwater Monitoring Program October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
1.0 INTRODUCTION
This Groundwater Monitoring Program Sampling, Analysis, and Reporting Plan (Plan)
is developed to support the Duke Energy Progress, Inc. (Duke Energy) requirement for
groundwater monitoring around the Mayo Steam Electric Plant (Mayo Plant) ash basin
operated under NPDES Permit NC0038377.
This Plan describes the groundwater monitoring network, methodologies of field
sampling, record - keeping protocols, analytical procedures, data quality objectives, data
validation, and reporting that will be used for the Mayo Plant ash basin groundwater
monitoring program.
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Groundwater Monitoring Program October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
' 2.0 SITE DESCRIPTION
2.1 Plant and Ash Basin Areas
' Duke Energy Progress, Inc. owns and operates the Mayo Plant located on
approximately 2,200 acres in northern North Carolina near Roxboro, North Carolina. A
large portion of the plant acreage encompasses the Mayo reservoir. The Mayo Plant is
' located in Person County along the west bank of Mayo Lake, north of Roxboro, east of
Boston Road, and south of the North CarohnaNirginia state border. The site location is
shown on Figure 1.
The Mayo Plant began operations in 1983 with a single -unit, coal -fired steam turbine.
Ash generated from coal combustion has been stored on -site in an ash basin. Dry ash
has also been transported to the Roxboro Plant for disposal in a lined landfill. It is
anticipated that beginning in Fall 2014, dry ash will be disposed on -site in a lined
landfill.
2.2 Ash Basin Description
Ash generated from coal combustion at the Mayo Plant has been stored in an on -site ash
basin. The ash basin was constructed and began receiving ash in 1983. The ash basin is
located north of the plant operational area and west of Mayo Lake. A former permitted
landfill is located on the east side of the ash basin. The 500 -foot compliance boundary
encircles the ash basin as shown on Figure 2.
Wastewater discharges from the ash basin are permitted by the North Carolina
Department of Environment and Natural Resources (NCDENR) Division of Water
Resources (DWR) under National Pollution Discharge Elimination System (NPDES)
Permit NC0038377. Permitted outfall locations are shown on Figure 2.
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Groundwater Monitoring Program October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
3.0 SITE GEOLOGY AND HYDROGEOLOGY
3.1 Geologic Framework
The Mayo Plant is situated in the eastern Piedmont Region of north - central North
Carolina. The Piedmont is characterized by well - rounded hills and rolling ridges cut by
small streams and drainages. Elevations in the area of the Mayo Plant range between
570 feet above mean sea level (msl) near the Plant entrance along Boston Road to 360
feet msl in the Crutchfield Branch stream area on the north side of the Plant.
Geologically, the Plant is located at the contact between two regional zones of
metamorphosed intrusive rocks: the Carolina Slate Belt (now referred to as Carolina
Terrane) on the east and the Charlotte Belt (or Charlotte Terrane) to the west. The
majority of the Mayo Plant, including the largest portion of the ash basin and Mayo
Lake are situated in the Carolina Terrane (USGS, 2007). The characteristics and genesis
of the rocks within these regional metamorphic belts have been the subject of intense
study to describe the geology in tectonic, structural, and /or litho- stratigraphic terms
(Hibbard, et. al., 2001).
Rocks of Charlotte Terrane are characterized by strongly foliated felsic mica gneiss and
schist and metamorphosed intrusive rocks. Carolina Terrane rocks in the vicinity of the
Plant are typically felsic meta- volcanics and meta - argillites. This is consistent with the
description of the geologic nature of the area according to the Geologic Map of North
Carolina (1985). The Geologic Map of North Carolina describes the felsic meta - volcanic
rock as metamorphosed dacitic to rhyolitic flows and tuffs, light gray to greenish gray;
interbedded with mafic and intermediate volcanic rock, meta - argillite and meta -
mudstone. The felsic mica gneiss of the Charlotte Terrane is described as being
interlayered with biotite and hornblende schist. These general observations are
consistent with site - specific observations from well logs for the Mayo Plant. Previous
site work indicates that the bedrock encountered in the northwestern portion of the
compliance boundary is intermediate meta - volcanic rock and the bedrock of the
remainder of the site is felsic meta- volcanics or meta- argillites.
Rocks of the region, except where exposed in road cuts, stream channels, and steep
hillsides, are covered with unconsolidated material formed from the in -situ chemical
and physical breakdown of the bedrock. This unconsolidated material is referred to as
saprolite or residuum. Direct observations at the Mayo Plant confirm the presence of
residuum, developed above the bedrock, which is generally 10 to 30 feet thick. The
residuum extends from the ground surface (soil zones) downward, transitioning
through a zone comprised of unconsolidated silt and sand, downward through a
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Groundwater Monitoring Program October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
' transition zone of partially weathered rock in a silt /sand matrix, down to the contact
with competent bedrock.
' 3.2 Hydrogeologic Framework
Based on previous activities at the site, subsurface lithology beneath the Plant area is
comprised of tan, brown to orange sandy silt and fine to coarse sands grading into
' partially weathered rock and then competent bedrock. The first occurrence of
groundwater tends to be within the partially weathered rock or competent bedrock at
' depths ranging from nine to 20 feet below land surface (bls) along the downgradient
compliance boundary and greater than 30 feet bls upgradient of the ash basin.
Groundwater within the area exists under unconfined, also known as water table,
conditions within the residuum and /or saprolite zones and in the fractures and joints of
the underlying bedrock. The water table and bedrock aquifers are interconnected. The
residuum acts as a reservoir for water supply to the fractures and joints in the
underlying bedrock. Shallow groundwater generally flows from local recharge zones in
topographically high areas, such as ridges, toward groundwater discharge zones, such
as stream valleys. Ridge and topographic high areas may serve as groundwater
recharge zones. Groundwater flow patterns in recharge areas tend to develop a
somewhat radial pattern from the center of the recharge area outward toward the
discharge areas and are expected to mimic surface topography. The closest surface
water discharge for the plant is to the north- northeast at Crutchfield Branch and, for the
eastern portions of the property, to the east and Mayo Lake.
Routine water level measurements and corresponding elevations from the compliance
monitoring well network indicate that groundwater flows from upland areas
(southwestern portion of the property) towards the northeast and Crutchfield Branch.
The approximate groundwater gradient for July 2014 data was 135 feet (vertical
change) over 5,500 feet (horizontal distance) or 24.5 feet /1,000 feet as measured from
upgradient background well BG -2 to downgradient well CW -2. Groundwater elevation
data collected from the two well pairs indicate the vertical gradient tends to be
downward or neutral between the transition zone and upper bedrock.
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Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
4.0 MONITORING PROGRAM
4.1 Regulatory Requirements for Groundwater Monitoring
The NPDES program regulates wastewater discharges to surface waters to ensure that
surface water quality standards are maintained. The Mayo Plant operates under
NPDES Permit NCO038377 which authorizes discharge as follows:
Cooling Tower System ( Outfall 001): Less than once per year the cooling towers
and circulating water system are drained by gravity and discharged directly to
Mayo Lake.
Ash Basin Treatment System ( Outfall 002): Outfall 002 discharges directly to
Mayo Lake. The ash basin receives ash transport water, coal pile runoff,
stormwater runoff, cooling tower blowdown, and various low volume wastes
such as boiler blowdown, oily waste treatment, wastes/backwash from the water
treatment processes including Reverse - Osmosis (RO) wastewater, plant area
wash down water, equipment heat exchanger water, and treated domestic
wastewater.
Internal Outfall 008: Cooling tower blowdown is directly discharged to the ash
basin. Cooling tower blowdown is usually mixed with ash sluice water prior to
discharge to the ash basin. Cooling tower blowdown is indirectly discharged to
Mayo Lake via the ash basin treatment system ( Outfall 002).
Internal Outfall 009: Discharge from the FGD blowdown treatment system. FGD
blowdown is indirectly discharged to Mayo Lake via the ash basin treatment
system ( Outfall 002).
Stormwater Discharge System: The facility is permitted to discharge stormwater
to Mayo Lake through the following outfalls:
— Outfall 004: Drainage from the outside storage area.
— Outfall 005: Drainage from the industrial area and the oil/bottled gas storage
area.
— Outfalls 006a, 006b, 006c, 006d, and 006e: Drainage from the cooling
tower(s) chemical feed building structure and the cooling tower area.
— Outfall 010: Drainage from haul road for coal ash, limestone, gypsum, and
gaseous anhydrous ammonia.
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Groundwater Monitoring Program October 2014
Mayo Steam Electric Plant, NPDES Permit k NC0038377 SynTerra
In addition to surface water monitoring, the NPDES permit requires groundwater
monitoring. Permit Condition A (6) Attachment XX, Version 1.0, dated March 17, 2011,
lists the groundwater monitoring wells to be sampled, the parameters and constituents
to be measured and analyzed, and the requirements for sampling frequency and results
reporting. Attachment XX also provides requirements for well location and well
construction. The as -built well information is summarized in Table 1 and the
constituent list, analytical methods, preservatives and holding times are summarized in
Table 2. The well logs for the listed wells are provided in Appendix A. A copy of
Attachment XX is included as Appendix B.
The compliance boundary for groundwater quality associated with the Mayo Plant ash
' basin is defined in accordance with 15A NCAC 02L .0107(a) as being established at
either 500 feet from the waste boundary or at the property boundary, whichever is
closer.
In accordance with the March 17, 2011 Groundwater Monitoring Plan, analytical results
have been submitted to the Department of Water Resources (DWR) before the last day
of the month following the date of sampling. In the future, analytical results will be
submitted to the DWR within 60 days of the date of sampling.
4.2 Description of Groundwater Monitoring System
The current groundwater monitoring plan for the Mayo Plant includes the sampling of
10 wells. These 10 wells include two background wells and eight downgradient wells.
The locations of the monitoring wells, the waste boundary, and the compliance
boundary are shown on Figure 2. Well construction data is provided in Table 1 and
Appendix A. Figure 3 is an example of the construction of a typical monitoring well.
Based on water levels measured from site wells, the general direction of groundwater
flow is to the northeast, toward Crutchfield Branch. The compliance monitoring wells
provide data for the groundwater downgradient of the ash basin.
The compliance monitoring network includes two background monitoring wells, BG -1
and BG -2, and eight monitoring wells located in side - gradient and downgradient
positions along the compliance boundary.
Wells CW -ID and CW -21) were installed in the upper bedrock and were paired with
shallow wells CW -1 and CW -2, which were installed above the bedrock, to monitor the
vertical hydraulic gradient in the area and aquifer conditions within the shallow
bedrock. The remainder of the compliance boundary wells, CW -3, CW -4, CW -5, and
CW -6, were installed in the saprolite or residuum, above bedrock.
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4.3 Monitoring Frequency
The monitoring wells will be sampled three times per year in April, July, and
November.
4.4 Sample Parameters and Methods
The monitoring program consists of sampling and analysis for parameters and
constituents identified in Permit Condition A (6), Attachment XX of the NPDES permit
(Appendix B). The parameters and the analytical methods are presented in Table 2.
It is proposed that monitoring for aluminum be discontinued. Aluminum is a very
common, naturally - occurring element in soil and rocks of the area. A preliminary
statistical evaluation indicates that aluminum concentrations in site groundwater were
determined not to be a statistically significant increase over the background well data
set. Further, aluminum is not consistently monitored across the entirety of Duke
Energy facilities, and there is no 2L Standard for aluminum.
The analytical results for the compliance monitoring program will be compared to the
NC 2L Standards or site - specific background concentrations.
4.5 Data Quality Objectives
The overall Quality Assurance (QA) objective is to ensure that reliable data of known
and acceptable quality are provided. All measurements will be documented to yield
results that are representative of the groundwater quality. Data will be calculated and
reported in units as required by the North Carolina Department of Environment and
Natural Resources (NCDENR).
The analytical QA objectives for precision, accuracy, and completeness have been
established by the laboratory(s) in accordance with the Environmental Protection
Agency (EPA) or other accepted agencies for each measurement variable where
possible. The objectives are outlined in the Duke Energy Analytical Laboratory
Procedures Manual and are available upon request.
Appropriate methods have been selected to meet applicable standards for groundwater
quality. Instances may occur, however, in which the condition of the sample will not
allow detection of the desired limits for various parameters either because of matrix
interference or high analyte concentrations requiring sample dilution. The laboratory(s)
will provide sufficient documentation with each data package to notify reviewers about
any analytical problems with the data, if needed.
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Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
5.0 SAMPLING PROCEDURES
5.1 Sampling Equipment and Cleaning Procedures
Development and sampling equipment shall be selected to ensure that materials are
compatible with the sample parameters and comply with state and federal regulatory
requirements for sampling.
New disposable sampling equipment (peristaltic pump tubing) or a decontaminated
stainless steel variable flow submersible pump with new disposable tubing is used for
low -flow well sampling. For the non - dedicated equipment used, such as water level
tapes and submersible pumps, the equipment is cleaned before and after each use in
accordance with standard EPA - approved cleaning procedures for field equipment. This
standard is outlined in the Standard Operating Procedures and Quality Assurance
Manual, Engineering Support Branch, EPA Region IV, February 1, 1991 as revised
December 20, 2011.
5.2 Groundwater Sampling
5.2.1 Development of Monitoring Wells
Monitoring wells addressed in this sampling plan have been developed.
If new monitoring wells are installed, they will be developed prior to initial
sampling. Development removes silt that has settled into the bottom of the well
following installation and removes fine silt and clay particles from the well
screen and sand -pack surrounding the screen. Well development is necessary to
eliminate potential clogging and enhance well performance. Development
involves removing an estimated ten or more well volumes from the well using a
submersible pump with up- and -down agitation to loosen particles from the well
screen. If the turbidity for a well increases over time, the well may be re-
developed to restore conditions.
5.2.2 Groundwater Level and Total Depth Measurements
Water level measurements are collected and recorded to determine the
groundwater elevation and flow direction. Site monitoring wells have been
surveyed to determine the elevation of the top of the well casing (TOC). Water
level measurements are referenced to the TOC and recorded to the nearest one-
hundredth of a foot.
Water level measurements are made with an electronic measuring device
consisting of a spool of dual- conductor wire and sensor. When the sensor comes
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Mayo Steam Electric Plant, NPDES Permit # NCO038377
October 2014
SynTerra
in contact with water, the circuit is closed and a meter light and /or buzzer
attached to the spool signal the contact. When the signal is sounded, the water
level is recorded on the Groundwater Monitoring Data Sheet (Figure 4). To
minimize sample turbidity, low flow sample methods are used whenever
possible. Using low -flow sampling techniques, the volume of the stagnant water
in the well is not calculated and the total well depth is not routinely measured to
avoid disturbing the bottom sediments. If conditions indicate a possible problem
with the integrity of a well, the total well depth may be measured.
5.2.3 Well Purging and Sampling
The selection of purging technique is dependent on the hydrogeologic properties
of the aquifer and hydraulic characteristics of each well. Hydraulic conductivity,
water column, well volume, screen length, and other information are evaluated
to select the purging technique to acquire groundwater representative of the
aquifer conditions. At the Mayo Plant, the low -flow purging technique has been
selected as the most appropriate method to minimize sample turbidity.
During low -flow purging and sampling, groundwater is pumped into a flow -
through chamber at flow rates that minimize or stabilize water level drawdown
within the well. At the Mayo Plant, low -flow sampling is conducted using a
peristaltic pump or low -flow submersible pump with new tubing. The intake for
the tubing or pump intake is lowered to the mid -point of the screened interval.
A multi - parameter water quality monitoring instrument is used to measure field
indicator parameters within the flow - through chamber during purging.
Measurements include pH, specific conductance, and temperature.
Indicator parameters are measured over time (usually at 3 -5 minute intervals).
When parameters have stabilized within ±0.2 pH units and ±10 percent for
temperature and specific conductivity over three consecutive readings,
representative groundwater has been achieved for sampling. Turbidity is not a
required stabilization parameter, however turbidity levels of 10 NTU or less are
targeted.
The Groundwater Monitoring Data Sheet (Figure 4) is used to record purge data
and field measurements.
Instrument calibration is performed and documented before the beginning of the
sampling event, at midday, and after each sampling event. The pH subsystem is
calibrated with three pH standards (pH 4.0, 7.0, and 10.0) bracketing the
expected groundwater pH. The pH calibration is then verified using a different
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Groundwater Monitoring Program October 2014
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pH 7.0 buffer. The specific conductance subsystem is calibrated using one
standard and verified using a different specific conductance buffer. Calibration
results are recorded on a Field Sampling Calibration Form (Figure 5).
' 5.3 Sample Collection
Groundwater samples are collected after the indicator parameters have stabilized.
' Sampling personnel wear new, clean, disposable, non - powdered nitrite gloves at each
location. Samples are collected in the order of the volatilization sensitivity of the
' parameters:
• Metals, metalloids, and selenium
' • Sulfate, nitrate and chloride
• Total dissolved solids
' Groundwater samples are preserved and stored according to parameter - specific
methods and delivered to the laboratory under proper Chain -of- Custody (COC)
' procedures. All pertinent notations, water -level measurements, removed well volumes,
and indicator parameters are documented on the Groundwater Monitoring Data Sheet
' (Figure 4).
5.4 Sample Containers, Volume, Preservation, and Holding Time
Sample containers supplied by the laboratory shall be new and pre- cleaned as approved
by EPA procedures appropriate for the parameters of interest. Table 2 summarizes the
sample containers, sample volume, preservation procedures, and holding times
required for each type of sample and parameter for the monitoring program. Sample
containers will be kept closed until used. Sample containers will be provided by Duke
Energy or vendor laboratories.
5.5 Sample Tracking
The COC procedures allow for tracking the possession and handling of individual
samples from the time of field collection through laboratory analysis and report
preparation. Samples are logged by the laboratory with a unique tracking number for
' each sample. An example of the COC Record is provided as Figure 6.
5.6 Sample Labeling
' Sample containers shall be pre - labeled and organized prior to field activities as part of
the pre - sampling staging process. As samples are collected, the sampling personnel
write the following information directly on the label: sampling date and time, and
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initials of sample collector. This information is also recorded on the Groundwater
Monitoring Data Sheet (Figure 4) and the COC Record (Figure 6).
5.7 Field Documentation
Field documentation from each sampling event is recorded on the Groundwater
Monitoring Data Sheets (Figure 4), the Field Sampling Calibration Form (Figure 5), and
the Chain -of- Custody Record (Figure 6). Additionally, a Groundwater Sampling Site
Checklist (Figure 7), or equivalent, is completed indicating information about the
monitoring wells such as proper identification (ID) tag and condition of protective
casing and pad. Field notations shall be made during the course of the field work to
document the following information:
• Identification of well
• Well depth
• Static water level depth and measurement technique
• Well yield - high or low
• Purge volume or pumping rate
• Sample identification numbers
• Well evacuation procedure /equipment
• Sample withdrawal procedure /equipment
• Date and time of collection
• Types of sample containers used
• Identification of replicates or blind samples
• Preservative(s) used
• Parameters requested for analysis
• Field analysis data and methods
• Sample distribution and transporter
• Field observations during sampling event
• Name of sample collector(s)
• Climatic conditions including estimate of air temperature
The Groundwater Monitoring Data Sheet, Field Sampling Calibration Form, and COC
Record and Analysis Request Form will be filed by project and date. Recorded entries
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' will be made on electronic forms or on paper forms in indelible ink. Errors on paper
documents will be corrected by drawing a line through the error, initialing and dating
the correction, and starting a new entry on the next line (if necessary).
' 5.8 Chain -of- Custody Record
The COC Record (Figure 6) accompanies the sample(s), traces sample possession from
' time of collection to delivery to the laboratory(s), and clearly identifies which sample
containers have been designated for each requested analysis. The record includes the
following types of information:
• Sample identification number
' • Signature of collector
• Date and time of collection
' • Sample type (e.g., groundwater, immiscible layer)
• Identification of well
' • Number of containers
• Parameters requested for analysis
' • Preservative(s) used
• Signature of persons involved in the chain of possession
' • Inclusive dates of possession
5.9 Sample Custody, Shipment, and Laboratory Receipt
' For the purpose of these procedures, a sample is considered in custody if it is:
• In actual possession of the responsible person
' • In view, after being in physical possession
• Locked or sealed in a manner so that no one can tamper with it after having been
' in physical custody or in a secured area restricted to authorized personnel.
Samples shall be maintained in the custody of the sampling crew during the sampling
' event. At the end of each sampling day and prior to the transfer of the samples off site,
entries shall be completed on the COC form for all samples. Upon transfer of custody,
' the COC form is signed by a sampling crew member, including the date and time. If
outside vendor laboratories are utilized, samples shall be delivered to these facilities by
Duke Energy personnel or courier.
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COC forms received by the laboratory(s) shall be signed and dated by the respective
supervising scientist(s) or their designee (at the Duke Energy Analytical Laboratory) or
the laboratory sample custodian (at vendor labs) immediately following receipt by the
laboratory. The analysts at the laboratory(s) maintain a sample tracking record that will
follow each sample through all stages of laboratory processing. The sample tracking
records show the date of sample extraction or preparation and analysis. These records
are used to determine compliance with holding time limits during lab audits and data
validation.
Custody procedures followed by Duke Energy Analytical Laboratory personnel are
described in detail in the Duke Energy Analytical Laboratory Procedures Manual.
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Groundwater Monitoring Program October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
' 6.0 ANALYTICAL PROCEDURES
The main analytical laboratory used in this program is the Duke Energy Analytical
' Laboratory: N.C. Drinking Water (NC37804) and Wastewater ( #248) Certifications. The
organizational structure and staff qualifications of the laboratory are discussed in its
generic Quality Assurance Program (QAP). The QAP and the Analytical Laboratory
' Procedures Manual are available for review upon request.
' Vendor laboratories that meet EPA and North Carolina certification requirements may
be used for analyses with approval by Duke Energy.
' The analytical procedures used for the samples analyzed for this Groundwater
Monitoring Program are listed in Table 2. Specific conductance, field pH, and
temperature are measured in the field according to the Duke Energy Groundwater
Monitoring and Sample Collection Procedure or the instrument manufacturer
instructions.
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7.0 INTERNAL QUALITY CONTROL CHECKS
Internal laboratory quality control (QC) checks used by the laboratories are described in
each laboratory's generic QAP and procedures manual. Using the internal laboratory
QC checks, the laboratories demonstrate the ability to produce acceptable results using
the methods specified.
Internal quality control checks for sampling procedures and laboratory analyses will be
conducted with each sampling event. These checks will consist of the preparation and
submittal of field blanks, trip (travel) blanks, and /or field replicates for analysis of all
parameters at frequencies described in the laboratory(s) procedures manuals.
The field QC blanks and replicates that may be included as internal QC checks are
described below. The specific type and number of blanks used may vary depending on
the sampling event and will be determined by the Duke Energy field sampling
personnel:
• Field Blanks: A field blank consists of a sample container filled in the field with
organic free, deionized, or distilled water prepared and preserved in the same
manner as the samples. The field blank is transported to the laboratory with the
samples and analyzed along with the field samples for the constituents of
interest to check for contamination imparted to the samples by the sample
container, preservative, or other exogenous sources. Field blanks are typically
utilized for each sampling event. The field blanks are typically analyzed for
major anions, cations and metals.
• Trip Blanks: A trip (travel) blank is a sample container filled with organic -free
water in the laboratory that travels unopened with the sample bottles. Trip
blanks are typically utilized when sampling for volatile organic compounds. The
trip blank is returned to the laboratory with the field samples and analyzed
along with the field samples for parameters of interest.
Equipment Blanks: If non - dedicated equipment is used, it is recommended that
equipment blanks be collected. The field equipment is cleaned following
documented cleaning protocols. An aliquot of the final control rinse water is
passed over the cleaned equipment directly into a sample container and
submitted for analyses.
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' • Field Replicates: A field replicate is a duplicate sample prepared at the sampling
locations from equal portions of all sample aliquots combined to make the
sample. Both the field replicate and the sample are collected at the same time, in
' the same container type, preserved in the same way, and analyzed by the same
laboratory as a measure of sampling and analytical precision.
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8.0 VALIDATION OF FIELD DATA PACKAGE
The field data package includes all of the field records and measurements developed by
the sampling team personnel. The field data package validation will be performed by
Duke Energy personnel. The procedure for validation consists of the following:
• A review of field data contained on the Groundwater Monitoring Data Sheets for
completeness.
• Verification that equipment blanks, field blanks, and trip blanks were properly
prepared, identified, and analyzed.
• A check of the Field Sampling Calibration Form for equipment calibration and
instrument conditions.
• A review of the COC Record for proper completion, signatures of field personnel
and the laboratory sample custodian, dates and times, and for verification that
the correct analyses were specified.
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The laboratory will perform a validation review of the submitted samples and
' analytical results to ensure that the laboratory QA /QC requirements are acceptable.
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Mavo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra '
10.0 REPORT SUBMITTAL
Two copies of the report of the monitoring results for the compliance wells will be
submitted to the DWR within 60 days of the date of sampling. The monitoring results '
will be submitted on NCDENR Form GW- 59CCR.
The DWR will be notified in the event that vendor lab analyses have not been '
completed within this time frame. Groundwater Monitoring Data Sheets, Field
Calibration Forms, Chain -of- Custody Records, Laboratory QA data, and Data '
Validation Checklists shall be kept on file by Duke Energy and are available upon
request.
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Groundwater Monitoring Program October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
' 11.0 REFERENCES
Hibbard, James P., Edward F. Stoddard, Donald T. Secor, and Allen J. Dennis, 2002, The
Carolina Zone: overview of Neoproterozoic to Early Paleozoic peri- Gondzvanan terranes
along the eastern Flank of the soitthern Appalachians: Earth Science Reviews, v. 57.
North Carolina Geological Survey, 1985, Geologic map of North Carolina: North Carolina
Geological Survey, General Geologic Map, scale 1:500000.
USGS, December 2007, (Dicken, Connie L., Suzanne W. Nicholson, John D. Horton,
Michael P. Foose, and Julia A.L. Mueller), Preliminary integrated geologic map
databases for the United States — Alabama, Florida, Georgia, Mississippi, North
Carolina, and South Carolina, Version 1.1: United States Geological Survey, USGS
Open File Report 2005 -1323, < http : / /pubs.usgs.gov /of/2005/1323 >.
IPage 20
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FIGURES

1
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synTerra - ROXBORO, NORTH CAROLINA
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148 RIVER STREET, SUITE 220
GREENVILLE, SOUTH CAROLINA DRAWN BY S ARLEDGE DATE 2014 10-08 GRAPHIC SCALE
PHONE [phone] PROJECT MANAGER "THY WEBB CONTOUR INTERVAL SOR 1000 0 1000 2000
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FIGURE

Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
within 0.5 mile radius of the compliance boundary that appeared to be developed and
in -use (occupied) with no apparent municipal water supply were assumed to have
private water supply wells (PRW). These properties are noted on Figure 1.
4.5 Summary of Receptor Survey Findings
A summary of the receptor survey is discussed below. The suspected water supply
well locations shown on Figure 1 are based upon field observations, EDR, and
NCDENR information. The suspected well locations are numbered on the map to
cross - reference information provided in Table 1. The table summarizes property
location and site information where a water supply well may be present based upon
drive -by observations or EDR information.
• No wellhead protection areas were identified within a 0.5 mile radius of the
compliance boundary;
• Approximately 21 possible private water supply wells are assumed to be located
within 0.5 mile radius of the compliance boundary;
• One water well was identified by EDR (Attachment 1). The well is located on the
Mayo plant property just to the west of monitoring well CW -5. EDR reports that
the well is 87 feet deep, but no other specific information was reported. Prior to
receiving the EDR report, the well had been noted during field work;
• The EDR report identified the Mayo Plant's surface water intake structure on
Mayo Reservoir (Figure 1);
• Three water supply wells are located on the plant property south of the ash
pond. The three wells are no longer in use; however, well piping, well pumps,
and appurtenances remain in place. The three former plant water supply wells
are located upgradient of the ash pond;
• Several small surface water features, including Crutchfield Branch to the
northeast, are present within the 0.5 mile radius of the compliance boundary.
Crutchfield Branch originates near the base of the ash basin and flows towards
the north /northeast, crossing into Virginia, and eventually merging with Mayo
Creek;
A portion of Mayo Reservoir is located within the survey radius (Figure 1).
Page 6
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Receptor Survey October 2014
' Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
' 4.0 FINDINGS
4.1 NCDENR Records
' No public water supply wells were identified in the Public Water Supply Water Sources
GIS point data set (obtained from NC OneMap GeoSpatial Portal) or on the NCDENR
SWAP online database within a 0.5 mile radius of the ash basin compliance boundary.
In addition, no wellhead protection areas were identified on the NCDENR SWAP
online database within a 0.5 mile radius of the compliance boundary.
' The Water Distribution Map Service (WDMS) data set obtained from the NC OneMap
GeoSpatial Portal, did not identify municipal water supply lines located within the 0.5
mile radius of the compliance boundary.
4.2 Environmental Data Resources, Inc. Records
The EDR report identified one water supply well located within 0.5 mile radius of the
ash basin compliance boundary. According to the EDR report, the well is
approximately 87 feet deep and screened felsic gneiss. The well is located northwest of
the ash basin compliance boundary. A copy of the EDR Report is provided in
Appendix A.
The EDR report identified the Mayo Plant's surface water intake structure on Mayo
Reservoir (Figure 1).
4.3 USGS Hydrography Review
According to the USGS Hydrography map, the Mayo Reservoir is a major surface water
body located within the survey radius (Figure 1). In addition to the reservoir, several
small surface water features, including Crutchfield Branch to the northeast, are present
within the 0.5 mile radius of the compliance boundary. Crutchfield Branch originates
near the base of the ash basin and flows towards the north /northeast, crossing into
Virginia, and eventually merging with Mayo Creek.
4.4 SynTerra Field Survey
SynTerra conducted a visual reconnaissance of the survey area by driving public road-
ways and noting properties that appeared to be developed or occupied. Municipal
water lines are present just beyond the 0.5 mile radius of the compliance boundary to
the southwest along Boston Road (US Hwy 501). A fire hydrant located at the plant
entrance is the termination of the water line along Boston Road (Figure 1).
Structures resembling water supply wells or well houses were noted where visible and
are shown on Figure 1 as reported /observed water supply wells (DW). Properties
Page 5
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Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
3.2 County GIS
The location of a City of Roxboro water line and a fire hydrant, just south of the plant's
entrance road is based upon Person County, North Carolina on -line GIS information.
These locations are shown on Figure 1. The Halifax County, Virginia GIS information
does not indicate the presence of public water utilities in this part of the county.
3.3 Environmental Data Resources, Inc. Records Review
A review of public database information provided by Environmental Data Resources,
Inc. (EDR) was also conducted. The public water well information reported for the
surrounding area (North Carolina and Virginia) has been incorporated in the summary
table (Table 1) and on Figure 1. A copy of the EDR report is included as Appendix A.
3.4 USGS Hydrography Review
SynTerra reviewed the United States Geological Survey (USGS) National Hydrography
Dataset (NHD) obtained from the USGS National Map Viewer
( http: / /viewer.nationalmap.gov /viewers to identify surface waters within a 0.5 mile
radius of the compliance boundary. Hydrography data obtained from the USGS NHD
is included on Figure 1.
3.5 SynTerra Field Survey
During March, 2014, SynTerra personnel conducted a vehicular survey along public
roads located within 0.5 mile radius of the compliance boundary in North Carolina and
Virginia. Observations on property use, apparent proximity to available municipal
water lines and structures that may represent potential water supply wells were noted.
Page 4
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Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
3.0 RECEPTOR SURVEY ACTIVITIES
3.1 State Records Review
' SynTerra reviewed the NCDENR Department of Environmental Health (DEH) Public
Water Supply Section's (PWSS) Public Water Supply Water Sources Geographic
Information System (GIS) point data set (pwsws.shp) and the Water Distribution Map
' Service (WDMS) data set obtained from the NC OneMap GeoSpatial Portal
(http: // data. nconemap. com /geoportal /catalog /main/home.page) to identify public water
supply sources and water supply lines within a 0.5 mile radius of the Mayo Plant
' compliance boundary.
According to the NC OneMap website, the Public Water Supply Water Sources point
data was current through November 18, 2009, and that it is the most current GIS data
set of public water supply locations available from North Carolina state agencies. The
' GIS point data for the public water supply wells includes, but is not limited to
information such as public water supply (PWS) system identification numbers,
ownership information, PWS source type, well depth, and well yield. The WDMS data
' set contains information on municipal water lines and other appurtenances.
On June 24, 2014, SynTerra reviewed the NCDENR Division of Water Resources (DWR)
' Source Water Assessment Program (SWAP) online database for public water supply
sources to identify wells located within a 0.5 mile radius of the compliance boundary; to
' confirm the location of wells included in the Public Water Supply Water Sources GIS
point data set, and to identify any wellhead protection areas located within a 0.5 mile
radius of the compliance boundary. The NCDENR SWAP database provides detailed
' assessments of all public drinking water intakes and wellhead protection areas in North
Carolina. The website address is: (http: / /swap.ncwater.org /website /swap /viewer.htm).
' Virginia's (VA) Department of Environmental Quality (DEQ) maintains a GIS database
called "VEGIS"
( http: / /www.deq. virginia. gov/ ConnectWithDEQ NEGISNEGISDatasets.aspx) which
includes many types of geo- spatial information. The VEGIS database was reviewed,
and it appears that it does not contain a database of water wells in the state. Virginia
' DEQ personnel were contacted to verify that the state does not currently maintain a
publicly available searchable database of wells.
I Page 3
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Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
2.0 BACKGROUND
2.1 Plant and Ash Basin Area Description
The Mayo Plant is a coal -fired electricity- generating facility located in Person County,
North Carolina, near the city of Roxboro. The location of the plant is shown on Figure
1. The Mayo Plant started operations in 1983.
The plant is located on Boston Road (US Highway 501) north of Roxboro. The northern
plant property line extends to the North Carolina/Virginia state line. The overall
topography of the Plant generally slopes toward the east (Mayo Reservoir) and
northeast (Crutchfield Branch).
The Mayo Plant ash basin is approximately 153 acres in size with an earthen dike. Ash
generated from the plant's coal combustion is contained in the ash basin. The Mayo
Plant NPDES permit (NC0038377) authorizes two discharges to Mayo Lake. Outfall 001
discharges cooling tower water and circulating water system discharge water. Outfall
002 is comprised of a number of streams including internal outfall 008 (cooling tower
blowdown), internal outfall 009 (FGD blowdown), ash transport water, coal pile runoff,
and other sources including water from wastewater treatment processes. Four
stormwater outfalls are also authorized for Mayo Plant.
2.2 Description of Surrounding Properties
Properties located within a 0.5 mile radius of the Mayo Plant compliance boundary are
located in Pearson County, North Carolina and Halifax County, Virginia. The
properties uses include residential, commercial, industrial, and agricultural.
Figure 1 depicts the properties surrounding the Mayo Plant.
Page 2
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Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit x NCO038377 SynTerra
1.0 INTRODUCTION
Duke Energy Progress, Inc. (Duke Energy), owns and operates the Mayo Steam Electric
Plant (Mayo Plant), located near Roxboro, in Person County, North Carolina. The Plant
is a single unit, coal -fired electricity- generating facility. Coal combustion residuals
(CCR) have historically been managed at the Plant's on -site ash basin. Dry ash has been
hauled and disposed in the lined landfill located at the nearby Roxboro Steam Electric
Plant (near Semora, NC). It is anticipated that beginning in Fall 2014, CCR from the
Plant will be managed in a newly constructed on -site landfill. Figure 1 is a map
showing the site and surrounding area.
Discharge from the ash basin is permitted by the North Carolina Department of
Environment and Natural Resources (NCDENR) Division of Water Resources (DWR)
under the National Pollution Discharge Elimination System (NPDES) Permit
NC0038377.
SynTerra has completed a receptor survey to identify water supply wells, public water
supplies, surface water bodies, and wellhead protection areas (if present) within a 0.5
mile radius of the Mayo Plant ash basin compliance boundary (Figure 1). The
compliance boundary for groundwater quality in relation to the ash basin is defined in
accordance with 15A NCAC 02L .0107(a) as being established at either 500 feet from the
waste boundary or at the property boundary, whichever is closer to the source.
The survey scope and findings are presented in the following sections.
Page 1
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Receptor Survey October 2014
Mayo Steam Electric Plant, NPDES Permit # NCO038377 SynTerra
TABLE OF CONTENTS
SECTION PAGE
1.0 Introduction ....................................................................................... ..............................1
2.0 Background ....................................................................................... ............................... 2
2.1
Plant and Ash Basin Area Description ..................................... ............................... 2
2.2
Description of Surrounding Properties ................................... ............................... 2
3.0
Receptor Survey Activities ............................................................. ............................... 3
3.1
State Records Review ................................................................. ............................... 3
3.2
County GIS ................................................................................... ............................... 4
3.3
Environmental Data Resources, Inc. Records Review ........... ............................... 4
3.4
USGS Hydrography Review ..................................................... ............................... 4
3.5
SynTerra Field Survey ................................................................ ............................... 4
4.0
Findings ............................................................................................. ............................... 5
4.1
NCDENR Records ....................................................................... ............................... 5
4.2
Environmental Data Resources, Inc. Records ......................... ............................... 5
4.3
USGS Hydrography Review ..................................................... ............................... 5
4.4
SynTerra Field Survey ................................................................ ............................... 5
4.5
Summary of Receptor Survey Findings ................................... ............................... 6
List of Figures
Figure 1. Receptor Survey Map
List of Tables
Table 1. Public and Private Water Supply Wells
List of Appendices
Appendix A EDR Report
Page
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161p
syn,T(erra
RECEPTOR SURVEY
FOR
MAYO STEAM ELECTRIC PLANT
10600 BOSTON ROAD
ROXBORO, NORTH CAROLINA 27574
NPDES PERMIT #NC0038377
PREPARED FOR
DUKE ENERGY PROGRESS, INC.
RALEIGH, NORTH CAROLINA
f DUKE
ENERGY.
PROGRESS
SUBMITTED: OCTOBER 2014
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ATTACHMENT XX — GROUNDWATER MONITORING PLAN
Permit Number: NCO038377
Version 1.0
WELL PARAMETER DESCRIPTION FREQUENCY
NOMENCLATURE
Aluminum Chloride Mercury TAS
Monitoring Wells: Antimony Chromium__ _ Nickel Thallium
C1d' -1, CW -1D. CW -2, Arsenic _ C_ op per Nitrate Water Level April. Jule,
CW -21D, C1W -3. CW -4, Cam'- Barium V_ Iron pH I Zinc November
5. CW -6, BG -1. BG -2 Baron Lead Selenium
Cadmium Manganecj Sulfate —
Note 1: For locations of monitoring wells, see attached map.
Note 2: Monitoring revisions may be considered, as applicable, if there are no significant detections prior to permit
renewal.
N00038377 - Mayo Steam Station
Groundwater Monitoring Plan Page 4 of 4 3,11 Tl 1

' 4. COMPLIANCE BOUNDARY. The compliance boundary for the disposal system shall be
specified in accordance with 15A NCAC 02L .0107(a). This disposal system was
individually permitted prior to December 30, 1983; therefore, the compliance boundary
is established at either 500 feet from the effluent disposal area, or at the property
boundary, whichever is closest to the effluent disposal area, An exceedance of
groundwater standards at or beyond the compliance boundary is subject to remediation
' action according to 15A NCAC 02L .0106(c) as well as enforcement actions in accordance
with North Carolina General Statute 143- 215.6A through 143- 215.6C.
' NC0038377 — Mayo Stcam Station
Groundwater Mr nitoring Plan Page 3 of 4 3 X17/11

g. The monitoring wells shall be regularly maintained, Such maintenance shall
include ensuring that the well caps are rust -free and locked at all times, the
outer casing is upright and undamaged, and the well does not serve as a conduit
for contamination.
3. GROUNDWATER SAMPLING AND COMPLIANCE. Monitoring wells shall be sampled after
construction and thereafter at the frequencies and for the parameters as specified in
Attachment XX. All maps, well construction forms, well abandonment forms and
monitoring data shall refer to the permit number and the well nomenclature as
provided on Attachment XX,
a. Per 15A NCAC 02H .0800, a Division certified laboratory shall conduct all
laboratory analyses for the required effluent, groundwater or surface water
parameters.
b. The measurement of water levels shall be made prior to purging the wells. The
depth to water in each well shall be measured from the surveyed point on the
top of the casing. The measurement of pH shall be made after purging and prior
to sampling for the remaining parameters.
C. The measuring points (top of well casing) of all monitoring wells shall be
surveyed to provide the relative elevation of the measuring point for each
monitoring well. The measuring points (top of casing) of all monitoring wells
shall be surveyed relative to a common datum.
d. For monitoring wells that are not located at the Compliance Boundary, the
Compliance Monitoring Form (GW- 59CCR) is not required. However, predictive
calculations or modeling shall be submitted to the Regional Office annually (i.e.
12 months after permit issuance) demonstrating groundwater quality standards
at the Compliance Boundary,
e. Two copies of the monitoring well sampling shall be submitted on a Compliance
Monitoring Form (GW- 59CCR), and received no later than the last working day
of the month following the sampling month. Copies of the laboratory analyses
shall be kept on site, and made available upon request. The Compliance
Monitoring Form (GW- 59CCR) shall include this permit number and the
appropriate well Identification number. All information shall be submitted to
the following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699 -1617
For groundwater samples that exceed the ground water quality standards in
15A NCAC 02L .0202, the Regional Office shall be contacted within 30 days after
submission of the groundwater monitoring report; an evaluation may be
required to determine the Impact of the waste disposal activities. Failure to do
so may subject the permittee to a Notice of Violation, fines, and /or penalties.
N0O038377 — Mayo Steam Station
Groundwater Monitoring Plan Page'_ of 4 3'1 7!1 1

A. (6) GROUNDWATER MONITORING WELL CONSTRUCTION AND SAMPLING
1. The permittee shall conduct groundwater monitoring as may be required to determine
the compliance of this NPDES permitted facility with the current groundwater Standards
found under 15A NCAC 2L,0200
2. WELL CONSTRUCTION. Within 120 days of permit issuance, monitoring wells, as
proposed on Attachment XX, shall be Installed to monitor groundwater quality.
a. Monitoring wells shall be constructed in accordance with 15A NCAC 02C .0108
(Standards of Construction for Wells Other than Water Supply) and any other
jurisdictional laws and regulations pertaining to well construction. The general
locations for all monitoring wells are indicated on Attachment XX.
b. Within 30 days of completion of well construction, a completed Well
Construction Record (Form GW -1) must be submitted for each monitoring well
to Division of Water Quality, Aquifer Protection Section, 1636 Mail Service
Center, Raleigh, NC 27699 -1636.
C. The Raleigh Regional Office, telephone number (919) 791 -4200 shall approve
the location of new monitoring wells prior to installation. The regional office
shall be notified at least 48 hours prior to the construction of any monitoring
well and such notification to the Aquifer Protection Section's regional supervisor
shall be made from 8:00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.
d. Within 60 days of completion of the monitoring wells, the Permittee shall
submit two original copies of a site map with a scale no greater than 1 -inch
equals 500 feet. At a minimum, the map shall include the following
information:
i. The location and identity of each monitoring well.
ii. The location of major components of the waste disposal system.
iii. The location of property boundaries within 500 feet of the disposal
areas.
iv. The latitude and longitude of the established horizontal control
monument.
V. The elevation of the top of the well casing (i.e., measuring point)
relative to a common datum.
vi. The depth of water below the measuring point at the time the
measuring point is established.
vii. The location of compliance and review boundaries.
viii. The date the map is prepared and /or revised.
ix. Topographic contours in no more than ten (10) foot intervals
e. The above information should be overlaid on the most recent aerial photograph
taken of the site. Control monuments shall be installed in such a manner and
made of such materials that the monument will not be destroyed due to
activities taking place on the property. The map and any supporting
documentation shall be sent to the Division of Water Quality, Aquifer Protection
Section, 1636 Mail Service Center, Raleigh, NC 27699 -1636.
f. The well(s) must be constructed by a North Carolina Certified Well Contractor,
the property owner, or the property lessee according to General Statutes 87-
98.4. If the construction is not performed by a certified well contractor, the
property owner or lessee, provided they are a natural person, must physically
perform the actual well construction activities.
NCO038377 - Mayo Steam Station
Groundwater Monitoring, Plan Page I of 3/17!1 1

i
1
NC®ENR ,
North Carolina Department of Environment and Natural Resources
Division of water Quality
Beverly Eaves Perdue Coleen H Sullins Dee Freeman ,
Governor Director Secretary
March 17, 2011
RE�E/ CEO i
Mr. John Toepfer � 7011
Senior Environmental Technical Specialist '
Progress Energy Service Company, LLC
410 South Wilmington Street
PEB 4 1
Raleigh, North Carolina 27601
Subject: Progress Energy's North Carolina Ash Pond Facilities
Final Groundwater Monitoring Plans and Maps 1
Dear Mr, Toepfer:
Attached are the final Groundwater Monitoring Plans and maps for the Asheville, Cape Fear, 1
Lee, Mayo, Roxboro, Sutton, and Weatherspoon facilities. These plans and maps will be
incorporated in each facility's NPDES permits, Please note some minur 'additions and 1
corrections to the individual Groundwater Monitoring Plans.
If you have any questions, please feel free to contact Eric Smith at (919) 715 -6196 or me at (919)
715 -6699. 1
Sincerely, 1
4�, -)v
Debra J. Watts 1
Supervisor — Groundwater Protection Unit
Attachments 1
cc: APS Central Office Files w/ attachments 1
SWP — NPDES (Sergei Chemikov) w/ attachments
Regional Offices — APS ,
A010--ER PROTECTION SEC7101,
1636 MaJ Serve Center, Ralegt,, Nosh CsuoMna 27599 -163£
One
Location. 2728 Caoilal Bouevard Raieq- Nont, CamWia 276tk Noi- t`lCaroll I Ills
Phone. 915- 73i32211 FAX 1 919 - 71508% FAx2.! ', "1r. EN? 1. 1,ustoae'Sefvic 1.8 -" 623.6745
Inlemel wwwsrwatemuatiN ora
An °_aid
. 1

APPENDIX B
I MAYO STEAM ELECTRIC POWER PLANT
PERMIT CONDITION A(6)
ATTACHMENT XX, VERSION 1.0
MARCH 17, 2011

I' `;~ ��� \rrr th t��i Ulnl.t !1Cp111fnt•nt nt F.r:U rn.r .c r.l
�� 11 F:I -L CON I•R C 1'ttlt t 1. 1011'
1. WELL CONTRACTOR:
.tames D. Barker
Well Cortractpr (hltl v1dual) Name
OtianlPx Inc.
viell Contractor Company Narrie
STREETADIDRESS P.O. Box41673
Raleigh, NC 27.629
City or Town State - - -_ Z•p Code------ -
( 919 _r 219 9604
Area code - Phone comber
2 WE LL INFORMATION:
SITE WELL ID +qtr a<.j%cat+r) NA
WELL CONSTRUCTION PERMI TN(a e.a.rvrt NA `"
OTHER ASSOCIATED PERMiTNI .fapoicabie)_NA
i_ WoLL Ltge tr•ngoq Arp! :•�hte Bex; Mo ^.•!CnngQ A1urs:Gp9!'P'a4;,r.,'
Induslrlal/C:omimcrcialO Agmultura.0 RecoveryO In)ecliorfl
Irrigalipd3l O1her(3 Ibsl use) _ __
DATE DRILLED 10-15 -0$
TIME COMPLETED AMD PKIN
4 WELLLOCAT :ON
CITY Roxboro COUNTY Person
10660 Boston Road, Roxboro, NC 27573
iStraN N:wne. lh.mber,. Community. Subeiwval. Lit( P.O. P „fcc Zip Codc i
TOPOGRAPI IIC h LAND SETTING
0 Slope 0 Valley Jb Flal D Ridge 0 Other
(:Ix 1:A ,ipj;f C.7f.�IC CDC) �
. 1 ila) th' rrr •I,•+;rlYti !
I ATITI)r)F N ta�3F�4ros rrnlidr'+ ,run, 1. rrr
LONGITUCL E ?— �323T1•G m�ciatrt! :xrnn
Litutudeilc+naludcunncc SGPS 13 Iupopaphiunwp
(ICcabon N we)) must be shown rn a US(-,S f'>lo Map :tnd
affachrd to flits Fran? if not us,ng GIPS)
5 FACIUTY nit•t farm Ar,ti Iner-ra w-f exit +.trt q �: r•rr:
FACILITY ID Nfd applicable) _NA
NAMF Or FACILITY Progress Energy Maw Plant
STRFCTADDRESS 10660130SIOnRoad
Roxboro NC 27573
C,ly or Torn Slate Lu C•A:e
CcNVTACT PERSON Tim Silar
MAILING Ar)ORFSS 10660 Boston Road
Roxboro NC
Cuy or Tarn State Z a Cu1a
I F NA
Area code - Phone number
6 WELL DETAILS: f
a TOTAL DEPTH: 5 Z
h DOES WELL REPLACE EXISTING WELL? YESL7 W41
��CCr
c WATER LEVEL Selow Tnp of C.asinq TJ FT
(Use '- -dAf,r eTopofL•usvgl
Mw-
W 6.1,1. ( ON &I Illy( t'IUN It t.CURI)
AY,rer rl Hcxn ills Un r.r.,n of \1'arrr Ou.th'r _ t�
�'I'IOti p
3'06 -
F TOP C -F CASING IS 28” _ F T Above I. arxt Surface' _ -
-Top of casxx) b;rmiilalbd 84 "W OtflOVr tared Surfi e,roy rc4ofe
a van nice nt accordance vvth 1SA NCAC 2C or 1A
e. YIELL (gpm) NA __ METHOD OF TEST NA
r. DISINFECTION: Type _NA _ _ Amount NA —
g. WATER ZONES (depth
Fran_47t To 4 From _ 10
From _ To_ From To
From TO From TO
7. CASING Depth Ciameler rt:r koe> pvrr:gm NWterial
t r
From ) To 4Z- Ft 2" sch40 PVC
From —_ To Ft
From - -- To FI
B GROUT'. Depth Matanal Method
From_ O To 3gr Ft Neal Cement Pour
From—n' To q0_ FL BentOnit@ _ Place
From To FL
­
9 SCREEN: Depth Diameter Slot Silo Material
F,,,_4' To r7Z rt 2" fn 0 010 it, PVC
` From To_ --_ —FI In _ In _ --
From To FI in in
10 SAND(C RAVEL PACK:
Depth f Size Malertaf
From _f'}Or To Ft #2 Silica Sand
From— TO _ Ft
pram_ To Ft
11 DRILUNG LOG
Fran To, F rrt>ab Dc Cr tliln
_C, �1� 5r47�wfa _
I r _
1 ri 2 !`4rnt'6Z GIL
I 12 REMARKS
y%-,V'
r (:.:. y'Er' r.^. � r.�..r t��r: G.:.tsn <t..:•tvrut :�.rl:rs,•.I
l: !• ••�I. L. :I f'7 . C'G` .FK. $ 1•.0 tart r. ;• ♦
+f 1
/01 67
Strh0, URR_CXCLRTIFIFDYJELL CON IRA6014
D• Tc
Jam S D Barker
_
PRINTED N AN1E OF PF RSt)N CCN•rS f R UC TING T NF N& L
Submit the original to the Division of Water Quality within 30 days t.nn: Information Mgt.. Farm CV'e-11)
1617 Mail Service Center - Raleigh, NC 27699.1617 Phone No. (9I9) 733 "7315 ext 568 Rev t7107

NONRESIDENTIAL n E:LI, CONS-1 RI crtox RECORD
\,wit t arolirr.I 1 erannrcnl ul- I n% iruumcnl rnd \;Rural Re iurce­ Dix ision or H aier Qualit%
N1 ELI. ('O\'rRA(" 1'OR ('L R] I FK'Arion o •3106 =AA - -- -�
1. WELL CONTRACTOR:
James D. Barker
well Conga- tar (Individual) Name
Quantex, Inc.
Well Contractor Company Name
P.Q. Box 41673
R- IFaIJn;gg NC 27629
Raleigh
Clly or TL,-j, Slate Zip Code
1919 .21-9-9604
Anti M.,? Ph-ule h, —jnlbh r
2. WELL INFORMATION:
N111i r:+)rv� IRU.;TION PERR'iT# NA
OTFIER A3SCi ,':IAI EO PERIAII rr aap +-cable) NA
SITE V4L•LL 10 4,1 a,µ _aete BG -2 ��_
3. WELL USE ,Chock One Box) Mondortn �! g MunicipallPubbc r
Indu,toa6i;cnmk rcral Agricultural [- Recovery. Injection ,
Ong 51 dr. Other 11,5t u5ei
DATE DRILLED 9128/10
4. WELL LOCATION:
1066_0 Boston Road Hwy. 501 27573
; jrr ?Bi Nan'•, .lrT.tr.,t �. TTUmA SirGl y-'-..Let No Parcel Zip Code;
City Roxboro COUNTY Person
TOPOGRAPHIC /LAND SETTING lcherx appropriate boo
Mope Vall,:, 'Fiat Ridge Other
LATITUDE 3`� ^ PNIS N 36.521225 DD
LONGII UDE '[' _ ' DMS W 78.90114B 00
Latit ude IL,rgrurle source V;ps F Top og.aphic map
itaca1!on or .;el,' must oe st)ott r1 ort a USGS ropo map andatlached ro
:hfs farm if no! using GPSI
5. FACILITYiName of the busioeSs Miele the yell Is located I
Progress Energy Mayo Plant
Facilitq• Name Facility IDS (if applicable)
10660 Boston Road
Sacet Address
Roxboro NC 27573
City 01 Trw.n State Zip Code
Progress Energy Mayo Plant
Conla'.-I Flamm.
10660 Boston Road
r:laliln3 Aylicss
Roxboro NC 27573
City or Irrn•rn Stale Zip Code
NA
�:Ig;l CG9C � IurK nwr�r - --
6. WELL DETAILS:
a. TOTAL DEPTH:
b. DOES WELL REPLACE EXISTING WELL? YFS' % NO ✓
c. WATER LEVEL[3elov lo),ol Casing NA FT
(U:.v • it Above Top of Casing)
d. TOP OF CASING IS 2S FT Above Land Surface'
'Top of casing terminated arJor below land ;urface ntay require
a variance in accordance vAh 15A NCAC 2C 0118
e. YIELD (gpm) NA METHOD OF TEST NA
:
I. DISINFECTION: Type NA Amount NA
:g. WATER ZONES (depth)
Top 38' Bottom 43 Top_ Bottom
Top_ Bollom Top Bottom_,--__
Top Bottom Top Bottom
Thickness/
• 7. CASING: Depth Diameter Weight Material
Top 0' Bottom Fl. 2" sch40 —PVC
: Top Bottom_ FI
Top Bottom Fl
8 GROUT Depth Material Metnod
Top 0' , Bottom Ft Neat Cement Pump
Top_ Bottom Ft Benlonite Pour
Top Bottom Fl
:9. SCREEN: Depth Diameter Slot Size Material
Top` Bottom Fl 2" in. 0.010 in PVC _
Top_- Bottom FI m to
Top Bollom FI m. in
10. SANDIGRAVEL PACK:
Depth Size Material
Top Bottom 45' Ft. X12 Silica Sand
Top Bolton Fl.
Top Bollom Fl.
11. DRILLING LOG
Top Bolton Formation Description
0' 1 12' Sandy Silt
12' 1 53' Wethered Rock, Granitic
Multiple Fractures
/
1
1
r
r
: 12. REMARKS:
ID7NFI! HIrCERT'17' THA - T VF,' LN: asCJF :SIR1:CrEnino
:000PLU"CEA-TH
1SA II(::, 2' 'l.E GV+ STR Cr IT IAN:)kROS AND Tw+T ACOPY' OF IHS
REC'R7 5ert PiynvltreP TH VELLOVF4SR
1 ut_, _ ll i— !(_L
,r c
9128/10
SIGNATURE OF CERTIFIED WELL CONTRACTOR
DATE
James D. Barker
PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Submit within 30 days of Completion to: Division of Water Quality • Information Processing, F Reev v 2109 2JO9 A
1617 Mail Service Center, Raleigh, NC 27699 -161, Phone : [phone]

W
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (Individual) Name
SWE. Inc.
Well Contractor Company Name
3201 SDdna Forest Road
Street Address
Raleiah NC 27616
Cdy or Town state Zip Code
9� 19 t 872 -2660
Area code Phone number
2. WELL INFORMATION:
1 r ONRESIDENTL9L WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICATION # 2907
WELL CONSTRUCTION PERMIT#
OTHER ASSOCIATED PERMIT( epptirade)
SITE WELL ID ca applicable) CW-6
3. WELL USE (Check One Box) Monitoring 3( Municipal/Public ❑
Industrial/Commeraal ❑ Agricultural ❑ Recovery ❑ Injection ❑
Irrigation❑ Other ❑ (list use)
DATE DRILLED 11 -15 -10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name, Number, Community, Subdivision, Lot No., Parwl, Zip Code)
CITY: Roxboro COUNTY Person
TOPOGRAPHIC/ LAND SETTING. (&4Kk appropriate box)
❑Slope []Valley JiFlat ❑Ridge ❑Other
LATITUDE 36 • 32 - 166600 ^ DMS OR 3x.xxxxxxxxx DO
LONGITUDE 78 53 ' 16.1300 " DMS OR 7x.xxxxxxxxx DD
Latitudellongitude source. WPS Qropographic map
(location of well must be shown on a USGS topo map andattached to
this form if not using GPS)
6. FACILITY (Name of the business where the well is located.)
Prnar .cs Enerav C arnlinas
Facility Name Facility IDS (if applicable)
10660 Rnstnn RI
Street Address
Rnxhnrn NG 2757'
City or Town State Zip Code
_.1 hen Tr>Ptfer
Contact Name
410 S Wjlminotnn St_ PPR 4A
Mailing Address
RaIA4rih NC; 27601
City or Town State Zip Code
( 9198 546 -7863
Area code Phone number
6. WELL DETAILS:
a. TOTAL DEPTH: 76.9`
b. DOES WELL REPLACE EXISTING WELL7 YES p NO IV
d. TOP OF CASING IS 2.5 FT. Above Land Surface'
'Top of casing terminated atlor below land surface may require
a variance in accordance with 15A NCAC 2C .0118
e. YIELD (gpm):
METHOD OF TEST
I. DISINFECTION: Type
Amount
g. WATER ZONES (depth):
Top Bottom
Top Bottom
Top Bottom
Top Bottom
Top Bottom
Top Bottom
Thickness!
7. CASING: Depth
Diameter Weight Material
Top -2,39 Bottom 72.1
Ft. 2" sch 40 PVC
Top Bottom
Fl.
Top Bottom
Ft.
• 8 GROUT: Depth
Material Method
Top 0 Bottom 62.7
FL Portland Pour
Top 62.7 Bottom 68.7
Ft Bentonite Pour
Top Bottom
Fl.
9. SCREEN: Depth
Diameter Slot Size Material
Top 72.1 Bottom 76.9
FL 2 in .010 In. PVC
Top Bottom
Ft in, in.
Toll Bottom
FL in. in
10. SANDJGRAVEL PACK:
Depth
Size Material
Top 68.7 Bottom 77.4
Ft Coarse Sand
Top Bottom
Ft
Top Bottom
Ft.
11. DRILLING LOG
Top Bottom
Formation Description
_0 /_4.5
Sandy Clay
4.5 / 15
Weathered Rock
15 77.4
Rock
I
I
1
1
12. REMARKS:
100 HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH
15A NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS
E51iMD HAS BEEN PROVIDED TO THE WELL OWNER
SIG OF CERTIFIED WELL lCOTT 0-0R DATE
c. WATER LEVEL Below Top of Casing: 14.33 FT. : Thomas Whitehead
(Use - +' Ii Above Top of Casing) : PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Submit within 30 days of completion to: Dlvlslon of Water Quality Form J09
Y P ty - Infomtatlon Processing, Rev. 2109
1617 Mall Service Center, Raleigh, NC 27699 -161, Phone :[phone]

NONRESIDENTIAL WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICATION q 2907
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (individual) Name
SWE. Inc.
Well Contractor Company Name
3201 Snfina Forest Road
Street Address
Raleioh NC 27616
City or Town State Zip Code
9( 19 ) 872 -2660
Area code Phone number
2. WELL INFORMATION:
WELL CONSTRUCTION PERMIT#
OTHER ASSOCIATED PERMITS(( applcable)
SITE WELL ID #(M appOcable) CW-5
3. WELL USE (Check One Box) Monitoring N( Municipal/Public ❑
Industrial/Commercial ❑ Agricultural ❑ Recovery ❑ Injection ❑
Irrigation❑ Other ❑ (list use)
DATE DRILLED 11- 15-1.4
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name, Numbers, Community, Subdivision, Lot No, Porce4, Zip Code)
CITY: Roxboro COUNTY Person
TOPOGRAPHIC / LAND SET71NG (check appropriate box)
❑Scope ❑Valley W(Flat ❑Ridge ❑Other
LATITUDE 36 -32 ' 20.6400 " DMS OR 3X.XXXXXXXXX DD
LONGITUDE 78 ' 54 ' 2.4600 " DIMS OR 7X.XXXXXXXxX DD
Latiludellongitude source: BPS []Topographic map
(location of well must be shown on a USGS topo map andattached to
this lam Ynot using GPS)
6. FACILITY (Name of the business where the well is located )
PrrxlrPSS Fnerav Carnlinns
Facility Name Facility ID/ (if applicable)
10860 Rnstnn Rnari
Street Address
Rnxharo NC 2`7573
City or Town State Zip Code
Jahn Tnetfer
Contact Name
410 S. Wilminatnn St_ PFR 4A
Mailing Address
Raleioh NC 27601
City or Town State Zip Code
( 9198 546 -7863
Area code Phone number
d. TOP OF CASING IS 2.5 FT. Above Land Surface'
`Top of casing terminated at/or below land surface may require
a variance in accordance with 15A NCAC 2C .0118.
e. YIELD (gpm) METHOD OF TEST_
I. DISINFECTION: T1roe Amount
S. WATER ZONES (depth)
Top
Bottom
Top
Bottom
Top
Bottom
Top
Bottom
Top
Bottom
Top
Bottom
Thickness/
7. CASING:
Depth
Diameter
Weight Material
Top -2.39
Bottom 35.3
Ft. 2"
sch 4 PVC
Top
Bottom
Ft.
Top
Bottom
Ft.
8 GROUT,
Depth
Material
Method
Top 0
Bottom 8
Ft. Portland
Pour
Top 8
Bottom 33.9
Ft. Bentonite
Pour
Top
Bottom
Ft.
0. SCREEN:
Depth
Diameter Slot
Slze Material
Top 35
Bottom 39.8
Ft. 2 in. .010 In. PVC
Top
Bottom
Ft.__in.
in.
Top
Bottom
Ft. in.
in.
10. SAND /GRAVEL PACK:
Depth
Size
Material
Top 33
Bottom 43
Ft. Coarse
Sand
Top
Bottom
Ft.
Top
Bottom
Fl.
11. DRILLING LOG
Top Bottom Formation Description
0 - / 2.5 Sandy Clay
2.5 / 12 Weathered Rock
1_/ 43 Rock
1
/
12. REMARKS:
B. WELL DETAILS: ; i DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WTH
15A NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS
a. TOTAL DEPTH: 39.8 RE HAS BEEN PROVIDED TO THE WELL OMdER_
b. DOES WELL REPLACE EXISTING WELL? YES NO d 12 -21 -10
SIGNATURE OF CERTIFIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing: 10.69 FT Thomas Whitehead
(Use " +' if Above Top of Casing) PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Submit within 30 days of completion to: Division of Water Quality Information Proceael Form tO9
aY P tY ' �� Rev. 2109
1617 Mall Service Center, Raleigh, NC 27699 -161, Phone :(M) 907.6300

� J
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (IndAdual) Name
SAME, Inc.
Well Contractor Company Name
3201 Sndna Forest Road
Street Address
Raleigh NC 27616
City or Town Stale Zip Code
9c 19 ► 872 -2660
Area code Phone number
NONRESIDENTML WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICATION # 2907
2. WELL INFORMATION:
WELL CONSTRUCTION PERMITS
OTHER ASSOCIATED PERMrrCrf appicable)
SITE WELL ID #<if.pplreble) CW-4
3. WELL USE (Check One Box) Monitoring 3( Municipal/Public O
Industrial /Commercial D Agricultural D Recovery O Injection L)
I"ationD Other D (list use)
DATE DRILLED 11-12-10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name, Numbers, Community, Subdivision, Lot No, Parcel, Zip Code)
CITY: Roxboro COUNTY Person
TOPOGRAPHIC I LAND SETTING: (check appropriate box)
OSlope OValley Flat ORldge []Other
LATITUDE 36 -32 1282400 " DMS OR 3X.XXXXXXXXX DD
LONGITUDE 78 ' 63 , 47.0800 ' DMS OR 7X.xxxxxxxxx DD
Latitudellongitude 6ource: WPS Dropographic map
(location of well must he shown on a USGS topo map andatteched to
this form if not using GPS)
S. FACILITY (Name of the business where the well is located )
Pronress Fnernv Carolinas
Facility Name Facility ID# (if applicable)
1 Min Rnctnn Rnad
Street Address
Roxhoro NC 97573
City or Town Stale Zip Code
John Topffer
Contact Name
410 S. Wilminntnn St_ PER 4A
Mailing Address
RalPinh NC 27601
City or Town State Zip Code
( 919 546 -7863
Area code Phone number
6. WELL DETAILS:
a. TOTAL DEPTH: 40.3'
b. DOES WELL REPLACE EXISTING WELL? YES O NO Ly
d. TOP OF CASING is 2.5 FT. Above Land Surface'
'Top of casing terminated attor below land surface may require
a variance in accordance with 15A NCAC 2C .0118.
e. YIELD (gpm):
METHOD OF TEST
L DISINFECTION: Type
Amount
9. WATER ZONES (depth)
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Thickness/
7. CASING: Depth
Diameter
Weight Material
Top. -2.55 Bottom 35 Ft. 2,,
sch 40 PVC
Top Bottom
Ft.
Top Bottom
Ft.
8 GROUT: Depth Material Method
Topes_ Bottom_ Ft. Portland Pour
Topes_ Bottom 33.9 Ft. Bentonite Pour
Top Bottom Ft.
8. SCREEN: Depth Diameter Slot Size Material
Top 35 Bottom 39.8 Ft. 2 in .010 in PVC
Top Bottom Ft. in in
Top Bottom Ft. in. in.
10. SAND /GRAVEL PACK:
Depth Size Material
Top 33_9 Bottom 40.3 R. Coarse Sand
Top Bottom Ft
Top Bottom Ft.
11. DRILLING LOG
Top Bottom Formation Description
0 7.5 Sandy Clay
7.5 /22 Weathered Rock
22 —/ 40.3 Rock
r
/T
12. REMARKS:
r DO HERESY CERTIFY THAT THIS WELL WAS C.ONSTRUCTEO ,N ACCORLNNCE WITH
1 SA NCAC YC, WELL CONSTRUCTION STANDARDS, AND TMAT A COPY of THIS
RE=ADEJ TO THE WELL OWNER
ilLf2t 12 -21 -10
SIGNATURE OF CERTIrIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing: 97 53 FT Thomas Whitehead
(Use ' +' if Above Top of Casing) : PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Submit within 30 dap of completion to: Division of Water Quality Form 109
aY p ty - Infotmadon Processing, Rev. 2os
1617 Mall Service Center, Raleigh, NC 27699-161, Phone : [phone]

..sear,
�d ✓ r
NONRESIDENTIAL WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
•��,,,,�• WELL CONTRACTOR CERTIFICATION k 2907
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor Qndivldual) Name
SWE. Inc.
WON Contractor Company Name
3201 Solina Forest Road
Street Address
Raleiah NC 27616
City or Town State Zip Code
9( 19 ) 872 -2660
Area code Phone number
2. WELL INFORMATION:
WELL CONSTRUCTION PERMIT#
OTHER ASSOCIATED PERMrT#(if applicable)
SITE WELL ID #(if .pplcable) CW-3 J
3. WELL USE (Check One Box) Monitoring Ifr MunicipaUPublic ❑
IndustriallCommerclal ❑ Agricultural O Recovery ❑ Injection Ct
Imgation❑ Other p (list use)
DATE DRILLED 11-16-10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name. Numbers. Community, SuWinsion, Lot No., Parcel, Zip Code)
CITY. Roxboro COUNTY Person
TOPOGRAPHIC / LAND SETTING: (check appropriate box)
❑Slope ❑Valley Flat []Ridge 00ther
LATITUDE 36 22 25.8200 ° OMS OR 3x.xXXXXXXXX DO
LONGITUDE 78 • 53 ' 36.7700 1) MS OR 7x.xXxxxxxxx DO
LatitudeAongitude source: UiPS []Topographic map
(location of well must be shown on a USGS topo map andattachad to
this form if not using GPS)
6. FACILITY (Name of the business where the well is located )
d. TOP OF CASING IS _ 2.5 FT. Above Land Surface'
-Top of casing terminated attor below land surface may require
a variance in accordance with 15A NCAC 2C .0118
e. YIELD (gpm) METHOD OF TEST
f. DISINFECTION: Type Amount
V. WATER ZONES (depth):
Top Bottom
Top Bottom
Top Bottom
Top
Bottom
Top
Bottom
Top
Bottom
Street Address
Thickness(
7. CASING: Depth Diameter Weight Material
Top-2.41 Bottom 17 Ft.2' sch 4 PVC
Top Bottom Fl.
Top Bottom Ft
8. GROUT: Depth Material Method
Top Q Bottom 7 Ft. Portland Pour
Top 7 Bottom 15 Ft. Bentonite Pour
Top Bottom Ft.
9. SCREEN: Depth Diameter Slot Size Material
Top 17 Bottom 31.8 Ft. 2 ___ in .010 in. PVC
Top Bottom Ft. in. in.
Top Bottom Ft. in in.
10. SANDlGRAVEL PACK:
Depth Size Material
Top 15 _Bottom 32.3 Ft. Coarse Sand
Top Bottom FI.
Top Bottom FI
11. DRILLING LOG
Top Bottom Formation Description
Emaress Fneray .;Imlinns
0 5.25
Facility Name
Facility IDS (if applicable) 5.25 / 30.5
'
9_QfifiD Rnstnn Rnxi
315 1 32.3
Street Address
I
Rnxhnrn
N 7573 1
City or Town
State Zip Code /
.lohn TnetFer
/
Contact Name
410 R Wilmington St
PFR 4A /
Mailing Address
/
'
Rnleinh
NC 27601 /
City or Town
State Zip Code
: 12. REMARKS:
t 9194 _546 -7863
Area code Phone number
6. WELL DETAILS:
a. TOTAL DEPTH: 31.8'
b. DOES WELL REPLACE EXISTING WELL? YES ❑ NO I�
.a mw
- •.,
1 DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORD ANCE WITH
15A NCAC 2C. WELL CONSTRUCTION STANDARDS. AND THAT A COPY OF THIS
R HAS BEEN PROVIDED TO THE WELL OWNER.
nn _ .1.22110
SIGNATURE OF CERTIFIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing: 16.09 FT Thomas Whitehead
(Use ' +" if Above Top of Casing) : PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Form GW -1b
Submit within 30 days of completion to: Division of Water Quality - Intonnation Processing, Rev. 2109
1617 Malt Service Center, Raleigh, NC 27999 -161, Phone: [phone]

NONRESIDENTIAL WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
•� ,�• WELL CONTRACTOR CFRTIFICATiON # Z907
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (Individual) Name
SWE. Inc.
Well Contractor Company Name
3201 Soring Forest Road
Street Address
Raleigh NC 27616
City or Town State Zip Code
9c 19 ) 872 -2660
Area code Phone number
2. WELL INFORMATION:
WELL CONSTRUCTION PERMITS
OTHER ASSOCIATED PERMITS(if applicable)
SITE WELL ID #0f applicable) CW-201 J
S. WELL USE (Check One Box) Monitoring t y MunicipallPublic ❑
Industrial/Commercial ❑ Agricultural p Recovery p Injection ❑
Irrigationo Other ❑ (list use)
DATE DRILLED 11 -1 1 -10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name, Numbers, Com(ftnity . Subdiviaon, Lot No , Parcel. Zip Code)
CITY Roxboro COUNTY Person
TOPOGRAPHIC I LAND SETTING: (check appropriate box)
❑Slope CIValley Rat ORidge COther
LATITUDE 36 •32 • 19.6700 ^ DMS OR 3x.n0=XXXX DO
LONGITUDE 78 53 24 9400 "DIMS OR 7x.xxxxxxxxx DD
Lalitudeflongitude source: V,PS Qropographlc map
potation of well must be shown on a USGS tope map andattached to
this 1wm if not using GPS)
5. FACILITY (Name of the business where the well is located.)
Prmrpss Fnprnv Carnlinas
Facility Name Facility IDS (if applicable)
10660 Rnsten Road
Street Address
Roxhorn NC 27573
City or Town State Zip Code
John Tnetfpr
Contact Name
410 S Wilminatnn St_ PER 4A
Mailing Address
Ralpinh NC 27601
City or Town State Zip Cade
( 9198 546 -7863
Area code Phone number
6. WELL DETAILS:
e. TOTAL DEPTH: 55 -4'
b. DOES WELL REPLACE EXISTING WELL? YES ❑ NO uI
d. TOP OF CASING IS 2.5 FT. Above Land Surface'
'Top of casing terminated aVor below land surface may require
a variance in accordance with 15A NCAC 2C.01 18
e. YIELD (gpm): METHOD OF TEST_
f. DISINFECTION: Type Amount
9. WATER ZONES (depth).
Top Bottom
Top Bottom
Top Bottom
Top
Bottom
Top
Bottom
Top
Bottom
: Top
Thickness/
7. CASING:
Depth
Diameter Weight Material
: Top -2.6
Bottom 45.6
Ft- 2" sch 40 PVC
: Top
Bottom
Ft.
Top
Bottom
Ft.
8. GROUT:
Depth
Material Method
: Top 0
Bottom 38
Ft. Portland Pour
: Top 38 _._
Bottom 44
Ft. Bentonite Pour
Top
Bottom
Ft.
9. SCREEN: Depth Diameter Slot Size Material
Top 45.6 Bottom 55.4 Fl. 2 in. .010 in. PVC
Top Bottom Ft. in in.
Top Bottom Ft. In in
10. SANDIGRAVEL PACK:
Depth Size Material
Top 44 Bottom 56 FL Coarse Sand
Top Bottom Ft.
Top Bottom Ft.
11. DRILLING LOG
Top Bottom
0 /8
8 18
8 55.9
12. REMARKS:
Formation Description
1 DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH
15A NCAC 2C. WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF T4S
RECORD HAS BEEN PROVIDED TOe THE WELL OWNER.
,J• _ 12 -21 -10
SIGNATURE OF CERTIFIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing: 14.39 FT Thomas Whitehead
(Use' *' if Above Top of Casing) : PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Submit Within 30 tie of completion to: Division of Water Quality Infotrntatlon Processing, Form GW 1b
i$ P �Y - ngr Rev 2109
1617 Mall Service Center, Raleigh, NC 27699 -161, Phone : (919) 807 -SM

s-10MVPs�
1. WELL CONTRACTOR:
Thomas Whitehead
Wait Contractor (Individual) Name
SWE, Inc.
Well Contractor Company Name
3201 SOrina Forest Road
Street Address
Raleiah NC 27616
City or Town State Zip Code
9t 19 ) 872 -2660
Area code Phone number
2. WELL INFORMATION:
NONRESIDENTIAL WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICATION # 2907
WELL CONSTRUCTION PERMIT#
OTHER ASSOCIATED PERMIT#(4 applicable)
SITE WELL ID 0(ir applicable) CW -2 J
3. WELL USE (Check One Box) Monitoring ly Municipal/Public ❑
IndustrlallCommercial ❑ Agricultural ❑ Recovery C Injection L)
Irrigation❑ Other ❑ (list use)
DATE DRILLED 11 -1 1-10
4. WELL LOCATION:
10660 Boston Rd, 27573
(Street Name, Numbers, Community, Subdivision, Lot No., Parcel, Zip Code)
CITY: Roxboro COUNTY Person
TOPOGRAPHIC 1 LAND SETTING. (check appropriate box)
❑Slope ❑Valley VFlat ❑Ridge ❑Other
LATITUDE 36 •32 '196700 • DMS OR 3X.XXXXXXXXX DO
LONGITUDE 76 • 53 , 24.9401 • DMS OR 7x.XXXXXXXXX DO
LalitudeAcngitude source. 03PS 17ropographic map
(location of well must be shown on a USGS topo map andettached to
this form if not using GPS)
5. FACILITY (Name of the business where the well is located.)
Prrtnrt?ss F_nPrnv Carolinas
Facility Name Facility ID# (if applicable)
10660 Rnstnn Road
Street Address
Rnxhnrn NC 97573
City or Town State Zip Code
John TrtPtfar
Contact Name
410 S_ Wilminntnn St_ PFR 4A
Mailing Address
RAPinh NG, 27601
City or Town State Zip Code
(( 919 546 -7863
Area code Phone number
S. WELL DETAILS:
a. TOTAL DEPTH: 17.5'
b. DOES WELL REPLACE EXISTING WELL? YES ❑ NO U/
d. TOP OF CASING IS 2.5 FT Above Land Surface'
'Top of casing terminated aVor below land sun" may require
a variance in accordance with 15A NCAC 2C .0116
a. YIELD (gpm):
METHOD OF TEST _
f. DISINFECTION: Type
Amount
U. WATER ZONES (depth):
Top Bottom
Top_
Bottom
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Thickness]
7. CASING. Depth
Diameter
Weight Material
Top -2.49 Bottom 7.7
F1 -2"-
sch 40 PVC
Top Bottom
Ft
Top Bottom
Ft.
6 GROUT: Depth Material Method
Top 0 Bottom _b FL Portland Pour
Topes_ Bottom 6.4 _ Fl._E�gntonile Pouf
Top Bottom Ft.
9. SCREEN: Depth Diameter Slot Size Material
Top 7.7 Bottom 17.5 Ft. 2 _.in 010 in PVC
Top Bottom — Ft—in. in
Top Bottom Ft in in.
10. SANDfGRAVEL PACK:
Depth S40 Material
Top 6.4 Bottom 18 -- Ft. Coarse Sand
Top Bottom Ft.
Top Bottom Ft.
11 DRILLING LOG
Top Bottom Formation Description
0 /_ 6
6 18 _
/
12. REMARKS:
I DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH
1SA NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COP/ OF THIS
RE FiA,S BEEN PROVIDED TO THE WELL OWNER
( .
ill paJ 12 -21 -10
SIGNATURE OF CERTIFIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing: 13.86 FT. Thomas Whitehead
(Use - +• it Above Top of Casing) PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Form GW -1b
Submit within 30 days of completion to: Division of Water Quality - Infortnation Processing, Rev. 2,09
1617 Mail Service Center, Raleigh, NC 27699 -161, Phone :[phone]

y r�
I. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (Individual) Name
Inc
Well Contractor Company Name
3201 Sorina Forest Road
Street Address
E3aleiah NC 27616
City or Town State ZIP Code
9( 19 ) 872 -2660
Area code Phone number
NONRESIDENTIAL WELL CONSTRUCTION RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICA'T'ION # 2907
2. WELL INFORMATION:
WELL CONSTRUCTION PERMITS
OTHER ASSOCIATED PERMITS(if applicable)
SITE WELL ID Oil applicable) CW -1
3. WELL USE (Check One Box) Monitoring V Municipal/Public ❑
IndustriaYCommercial ❑ Agricultural ❑ Recovery ❑ Injector ❑
Irrigation❑ Otter ❑ Cis[ use)
DATE DRILLED 11 -8-10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name. Numbers, Community, Subdivision, Lot No, Parcel, Zip Code)
CITY Roxboro COUNTY Person
TOPOGRAPHIC/ LAND SETTING' (check appropriate box)
❑Slope ❑Valley Flat ❑Ridge ❑Otter
LATITUDE 36 ' 91 -56,4900 - DMS OR 3x.XXXXXXXXX DD
LONGITUDE 78 53 , 192200 "DMS OR 7x.XXXXXXXXX DD
LatiludeAongitude source: W3PS aopographic map
(location of wetl must be shown on a USGS topo map andatfached to
this form if not us,ng GPS)
S. FACILITY (Name of tie business where the well is located)
Prnnil Fnernv Carolinas
Facility Name Facility IDS (if applicable)
10660 Rnston Road
Street Address
Rnxhnro NC 27573
City or Town State Zip Code
John TnetfPr
Contact Name
410 S Wilmington St PFR 4A
Mailing Address
Raleinh NC 27601
City or Town State Zip Code
( 9198 546 -7863
Area code Phone number
6. WELL DETAILS:
a. TOTAL DEPTH: 39.9'
b. DOES WELL REPLACE EXISTING WELL? YES ❑ NO L1/
d. TOP OF CASING IS 2.5 FT, Above Land Surface'
'Top of casing terminated atior below lend surface may require
a variance In accordance with 15A NCAC 2C .0118
e. YIELD (gpml
METHOD OF TEST
t. DISINFECTION: Type
Amount
g. WATER ZONES (depth):
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Thickness/
7. CASING: Depth
Diameter
Weight Material
Top -2.65 Bottom 30.1
FL 2"
sch 40 PVC
Top Bottom
FL
Top Bottom
FL
8. GROUT Depth Material Method
Top 0 Bottom 8 Ft Portland Pour
Top $_ Bottom 29 Ft. Bentonile Pour
Top Bottom Ft
9. SCREEN: Depth Diameter Slot Size Material
Top 30.1 Bottom 39.9 Ft 2 in .010 in. PVC
Top Bottom Ft, in in
Top Bottom Ft in in.
10. SAND /GRAVEL PACK:
Depth Size Material
Top 29 Bottom 40.75 Ft. Coarse Sand
Top Bottom Ft.
Top Bottom Ft.
11. DRILLING LOG
Top Bottom Formation Description
0 if 5 Sandy Clay
5 1 14 Weathered Rock
4 140.40 Rock
if
if
/
/
/
12. REMARKS:
1 DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH
15A NGC 21— WELL CONSTRUCTION STANDARDS, ANO THAT A COPY OF THIS
R O HAS BEEN PROVIDED TO THE WELL OWNER.
�CERTIFIED 1+61014 12 -21 -1D
SIGNATURE WELL CONTRACTOR DATE
e. WATER LEVEL Below Top of Casing- 18.64 FT. Thomas Whitf1head
(Use '+' ff Above lop of Casing) PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Form Submit within 30 days of completion to: Division of Water Quality Information Processing, Rev. )09
Y P KY - g Rev. 2109
1617 Mali Service Center, Raleigh, NC 27699 -161, Phone : [phone]

s'`SWt°
1. WELL CONTRACTOR:
Thomas Whitehead
Well Contractor (Individual) Name
SWE, Inc.
Well Contractor Company Name
3201 Spring Forest Road
Street Address
Raleiah NC 27616
Cily or Town State Zip Code
9( 19 ) 872 -2660
Area code Phone number
2. WELL INFORMATION:
NONRESIDENTIAL WELLCONSTRUCr1ON RECORD
North Carolina Department of Environment and Natural Resources- Division of Water Quality
WELL CONTRACTOR CERTIFICATION # 2907
WELL CONSTRUCTION PERMIT#
OTHER ASSOCIATED PERMTTi(7 applicable)
SITE WELL ID #(if applicable) CW -1 J
3. WELL USE (Check One Box) Monitoring (y Municipal/Public p
Industrial/Commercial ❑ Agricultural O Recovery ❑ Injection O
Irrigationo Other ❑ (list use)
DATE DRILLED_ 11-9-10
4. WELL LOCATION:
10660 Boston Rd. 27573
(Street Name, Numbers, Community, Subdrvialon, Lot No, Paroel, Zip Code)
crTY: Roxboro COUNTY Person
TOPOGRAPHIC I LAND SETTING' (check appropriate box)
❑Slope ❑Valley JiFlat ❑Ridge ❑Other
LATITUDE 36 '31 ' 58.4300 "DMS OR 3x.xxxxxxxxx DO
LONGITUDE 78 ' 53 192200 "DMS OR 7x.xxxxxxxxx DD
Latnude/longitude source: W3PS Oropographtc map
(location of well must be shown on a USGS fopo map andattached to
this fom+ifnot using GPS)
S. FACILITY (Name of the business where the well is located )
Pronriptsq FnPrav .arnlinas
Facility Name Facility IDO (If applicable)
10660 Rnstnn Rnari
Street Address
Rnxhnrn NC 27573
City or Town State Zip Code
.Inhn Tnetfar
Contact Name
4101 S_ Wilminatnn St PFR 4A
Mailing Address
Raleigh NC 27901
City or Town Stale Zip Code
( 919 546 -7863
Area code Phone number
d. TOP OF CASING Is 2_5 FT. Above Land Surface'
'Top of casing terminated at/or below land surface may require
a vanance in accordance with 15A NCAC 2C.01 18
a. YIELD (gpm) METHOD OF TEST_
f. DISINFECTION: Type Amount
g. WATER ZONES (depth)
Top Bottom
Top
Bottom
Top Bottom
Top
Bottom
Top Bottom_
Top
Bottom
Thickness!
7. CASING: Depth
Diameter
Weight Material
Top -2_92 Bottom 15.5
Ft. 2 '
sch 40 PVC
Top Bottom
Ft.
Top Bottom
Ft
8. GROUT: Depth
Material
Method
Topes_ Bottoms_
Ft. Portland Pour
Top S_ Bottom 14
Ft. Bentonite
Pour
Top Bottom_
Ft.
9. SCREEN: Depth Diameter Slot Slza Material
Top 15.5 Bottom- 25 Ft. 2 in. _QJJ In. PVC
Top Bottom Fl. _in in.
Top Bottom Ft. in in
10. SAND /GRAVEL PACK:
Depth Size Material
Top-11--Bottom 255 Fl. COarsB Sand
Top Bottom Ft.
Top Bottom Ft.
11 DRILLING LOG
Top Bottom Formation Description
0 /5
5 /20
20 25.5
/
12. REMARKS
E . • • -.
a' -• -', - -- - --
6. WELL DETAILS: : I DO HEREBY CERTIFY THAT THIS WELL WAS CONSTRUCTED IN ACCORDANCE WITH
• 1SA NCAC 2C, WELL CONSTRUCTION STANDARDS, AND THAT A COPY OF THIS
a. TOTAL DEPTH: 25' - RECORD HAS BEEN PROVIDED TO THE WELL OWNER.
12 -21 -16
b. DOES WELL REPLACE EXISTING WELL? YES ❑ NO Cif SIGNATURE OF CERTIFIED WELL CONTRACTOR DATE
c. WATER LEVEL Below Top of Casing. _19.84 FT Thomas Whitehead
(Use' *' it Above Top of Casing) : PRINTED NAME OF PERSON CONSTRUCTING THE WELL
Form GW•1b
Submit within 30 daysof completion to: Division of Water Quality - Information Procaesing, Rev. 2109
1617 Mall Servleu C•ntic Raleigh, NC 27699 -161, Phone : [phone]

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Completion
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Lithology Description ,
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P oled No Page 1

COMPLETION REPORT OF WELL No. 13G -2 Sheet 1 o11
PROJECT. Progress Energy - Mayo Steam Station
PROJECT NO:
1584 -10 -027
WATER LEVEL
Depth to water 35.57 feet
PROJECT LOCATION:
Person County
- 2.82 -25.4
below top of casing
Type:
LATITUDE'
Interval:
0 -21
SEAL
LONGITUDE
Type.
DRILLING CONTRACTOR.
Quantex
21 -23
TOP OF CASING ELEVATION
DRILLING METHOD
4" Air Hammer
542.66
DATUM .
�
DATE DRILLED
9128110
MSL
LOGGED BY.
L. Butler
STRATA
WELL = 0 C
DESCRIPTION m M DETAILS wr Uj ;

c
c
3
c
c
a
s
C
COMPLETION REPORT OF WELL No. CW -6 sheet I of 1
PROJECT: Progress Energy - Mayo Steam Station
PROJECT NO
1584 -10 -027
WATER LEVEL'
Depth t0 water 14.33 feet
PROJECT LOCATION
Person County
DESCRIPTION
below top of casing
tL
pv
LATITUDE:
LONGITUDE
DRILLING CONTRACTOR
T. Whitehead
TOP OF CASING ELEVATION:
DRILLING METHOD:
4" Air Hammer
DATUM
462.83
DATE DRILLED
11/11/10
LOGGED BY:
Ill
435.27
Diameter:
Type
TOPSOIL with sand
L. Butler
STRATA
WELL
DETAILS
w =
o
�
J
0
J
Lu
WELL CONSTRUCTION DETAILS
DESCRIPTION
m
U)
tL
pv
PROTECTIVE CASING
0
0.00
GS
435.27
Diameter:
Type
TOPSOIL with sand
000
CG
435 27
silt matrix
5
Interval:
Moist Light Brown
Orange Sandy SILT
with small angular rock
fragments in the matrix
10
t
RISER CASING
Diameter: 2
Type PVC
Dense Light Brown
Orange Sandy SILT
Dry, saprolite with iron
fairing on relict
15
Interval: +2.88 -72.1
structure
20
GROUT
Type. Cement
switch to air hammer
Tilling only yeilding a
dry, colored sandy silt
rock flour
25
Interval. 0 -62.7
Rock mos8y grey pink
black granitic rock,
SEAL
with a softer, darker
more mafc -rich zone
between 20' to 22' bg.
30
Type Bentonite
Interval- 62.7 -68.7
approximate 6 "
35
fracture zone to 28"
g. all dry with no
FILTERPACK
igns of water.
40
Type: #2 Sand
Interval 68.7 -77.4
Granitic Rock felsic
cuttings with mafic
seams from 47' to 51'
45
and from 66' to 77'
fractures at 40', 41',
SCREEN
65', dry : observed
water at 71', observed
abundunt water at 76'
50
55
Diameter. 2
Type: 0.010
Interval. 72.1 -76.9
60
62.70
BS
1372.57
LEGEND
65
FI FILTER PACK
70
68.70
FP
366.57
■ BENTONITE TOC TOP OF CASING
CEMENT GROUT GS GROUND SURFACE
BS BENTONITE SEAL
® CUTTINGS / BACKFILL FP FILTER PACK
72.10
TSC
363 17
75
76.90
BSC
1 35837
TSC TOP OF SCREEN
STATIC WATER LEVEL BSC BOTTOM OF SCREEN
TD TOTAL DEPTH
CG CEMENT GROUT
77.40
1 ID
I 35T137-
--
COMPLETION REPORT OF
#SME WELL No. CW-6
ENGINEERING • TESTING Sheet 1 of 1
ENVIRONMENTAL SERVICES

COMPLETION REPORT OF WELL No. CW -5 Sheet I of l
PROJECT: Progress Energy - Mayo Steam Station
PROJECT NO:
1584 -10 -027
WATER LEVEL:
Depth t0 water 10.69 feet
PROJECT LOCATION:
Person County
0.00
below top of casing
507.21
Diameter:
LATITUDE
FILTER PACK
0.00
Type
LONGITUDE:
STATIC WATER LEVEL
DRILLING CONTRACTOR.
T. Whitehead
TOP OF CASING ELEVATION:
TD
DRILLING METHOD
4" Air Hammer
CG
509.60
DATE DRILLED
11/15/10
DATUM:
MSL
LOGGED BY:
L. Butler
STRATA WELL a I, o
m �_ DETAILS a 0 §� WELL CONSTRUCTION DETAILS
DESCRIPTION a x 0 W W
VI 0 vl J W
ReSicluum: Orange
Brown Fine to Coarse
ery Sandy SILT
an Brown Very silty
(Fine to Coarse SAND
Partially Weathered
Rock sampled as
Gray Silty Fine to
oarse SAND Rock
earn from 3.5' to 5'
Rock - Felsic to
Intermediate
Metavolcanic
weathered zones 16'
to 17', 20' to 22, 32 5'
to 33, 34.5' to 36',
fractures at 24', 38'
and 40' no signs of
water observed prior
to 38' bg
�I
s
d
n
SCREEN
Diameter. 2
Type: 0.010
Interval: 36.341.1
LEGEND
FILTER PACK
. BENTONITE
TOC
TOP OF CASING
PROTECTIVE CASING
0
0.00
GS
507.21
Diameter:
CG 507.21
FILTER PACK
0.00
Type
TOP OF SCREEN
STATIC WATER LEVEL
BSC
Interval
5
TD
TOTAL DEPTH
CG
= 800
BS 499.21
RISER CASING
10
Diameter: 2
Type: PVC
15
Interval: - 2.39 -36.3
20
GROUT
Type Cement
Interval: 0 -8
25
SEAL
3o
Type Bentonite
33.00
FP
474.21
Interval 8 -33
1
35
36.30
TSC
1 470.91
FILTERPACK
40
41.10
BSC
466.11
Type: #2 Sand
Interval: 33 -43.0
43.00
464.21
SCREEN
Diameter. 2
Type: 0.010
Interval: 36.341.1
LEGEND
FILTER PACK
. BENTONITE
TOC
TOP OF CASING
GS
GROUND SURFACE
® CEMENT GROUT
BS
BENTONITE SEAL
® CUTTINGS / BACKFILL
FP
FILTER PACK
TSC
TOP OF SCREEN
STATIC WATER LEVEL
BSC
BOTTOM OF SCREEN
TD
TOTAL DEPTH
CG
CEMENT GROUT
COMPLETION REPORT OF
WELL No. CW -5
Z ENGINEERING - TESTING Sheet 1 of 1
f
ENVIRONMENTAL SERVICES

c
ii
PROJECT Progress Energy - Mayo Steam Station
Person County
BORING LOG CW -B4
1584 -10 -027
NOTES No water in boring after 24 hours
DATE DRILLED: 11112110
ELEVATION
DRILLING METHOD 4" Air Hammer
BORING DEPTH 22.5
LOGGED BY: L. Butler
WATER LEVEL Dry
DRILLER T. Whitehead
DRILL RIG
U
J
w
p
w ui
STANDARD PENETRATION TEST DATA
w
=
a (7
o
MATERIAL DESCRIPTION
LH
o
ii a
t blowslft)
a
(�
w
w
J
a
Z
Z
w V
10 20 3.0 60 80
5
Residuum: Tan Brown Fine to Coarse Very Sandy SILT
10
-
Partially Weathered Rock: sampled as Tan Silty Fine to
15
Coarse SAND
_
Tan Brown Fine to Coarse Very Sandy SILT
Partially Weathered Rock sampled as Tan Silty Silty Fine
20
to Coarse SAND
Rock - Intermediate Metavolcanic
NOTES:
HI L G IS ONLY A PORTION OF A REPORT FOR THE
NAMED PROJECT AND MUST ONLY BE USED TOGETHER
WITH THAT REPORT
2 BORING, SAMPLING AND PENETRATION TEST DATA IN
GENERAL ACCORDANCE WITH ASTM D -1586
3 STRATIFICATION AND GROUNDWATER DEPTHS ARE NOT
EXACT
4 WATER LEVEL IS AT TIME OF EXPLORATION AND WILL
VARY
Page 1 of 1
*S&ME
ENGINEERING • TESTING
ENVIRONMENTAL SERVICES

STRATA
COMPLETION REPORT OF WELL No. CW-4 Sheet 1 of 1
PROJECT.
Progress Energy - Mayo Steam Station
0
PROJECT NO:
1584 -10 -027 WATER LEVEL
Depth to water 22.53 feet
PROJECT LOCATION:
Person County
below top of casing
Type
LATITUDE
omi
w
LONGITUDE
WELL CONSTRUCTION DETAILS
DRILLING CONTRACTOR
T. Whitehead
a�
TOTAL DEPTH
TOP OF CASING ELEVATION
CG
DRILLING METHOD
4" Air Hammer
451.31
DATE DRILLED
DATUM
11/12/10
III
LOGGED BY
L. Butler
STRATA
WELL
TOP OF CASING
o
0
GS
448 76
Diameter:
_
CG
448.76
Type
DETAILS
omi
w
;

o'
s
n
f
0
0
i
C
COMPLETION REPORT OF WELL No. CW -3 Sheet 1 of 1
PROJECT Progress Energy - Mayo Steam Station
PROJECT NO
1584 -10 -027
WATER LEVEL:
Depth to water 16.09 feet
PROJECT LOCATION.
Person County
m°
g
U)
below top of casing
LATITUDE:
LONGITUDE.
DRILLING CONTRACTOR:
T. Whitehead
TOP OF CASING ELEVATION
DRILLING METHOD
4° Air Hammer
DATUM:
DATE DRILLED.
11116110
LOGGED BY:
MSL MSL
Diameter:
Type:
Interval:
Topsoil
L_ Butler
STRATA
WELL
DETAILS
w
o
o
w
0
; WELL CONSTRUCTION DETAILS
J
w
DESCRIPTION
m°
g
U)
a
O
PROTECTIVE CASING
0
000
GS
435.27
Diameter:
Type:
Interval:
Topsoil
000
CG
435 27
Residuum Orange
Brown Slightly Clayey
Fine Sandy SILT
5
10
t15
3E
7.00
BS
428.27
RISER CASING
Diameter: 2
Type PVC
Interval +2.41 -17.0
Gray Orange Fine to
Coarse Very Sandy
I LT
15.00
FP
420.27
Orange Brown Silty
Fine to Coarse SAND
`Probe refusal at 5 5
17.00
TSC
418.27
feet
20
GROUT
Type. Cement
Partially Weathered
Rock: sampled as
Silty Fine to Coarse
Interval 0 -7
SAND ;rock seam
25
from 20 - 21 feet; first
apparent water at 26
SEAL
feet
30
31.80
BSC
403.47
Type. Bentonite
Interval 7 -15
FILTERPACK
Rock Felsic
Meta - volcanic
Type: #2 Sand
Interval: 15 -32.3
SCREEN
Diameter: 2
Type 0.010
Interval. 17.0 -31.8
LEGEND
FILTER PACK
■ BENTONITE TOC TOP OF CASING
® CEMENT GROUT GS GROUND SURFACE
BS BENTONITE SEAL
® CUTTINGS I BACKFILL FP FILTER PACK
TSC TOP OF SCREEN
t STATIC WATER LEVEL BSC BOTTOM OF SCREEN
TD TOTAL DEPTH
CG CEMENT GROUT
COMPLETION REPORT OF
#SWE WELL No. CW -3
ENGINEERING . TESTING Sheet 1 of 1
ENVIRONMENTAL SERVICES

STRATA
COMPLETION REPORT OF WELL No. CW -2D Sneet 1 of 1
PROJECT:
Progress Energy - Mayo Steam Station
=
PROJECT NO:
1584 -10 -027 WATER LEVEL:
Depth to water14.39 feet
PROJECT LOCATION:
Person County
below top of casing
LATITUDE
J
m
LONGITUDE:
DETAILS
DRILLING CONTRACTOR
T. Whitehead
;

COMPLETION REPORT OF WELL No. CW -2 Sheet 1 of 1
PROJECT: Progress Energy - Mayo Steam Station
PROJECT NO:
1584.10 -027
WATER LEVEL:
Depth to water13.86 feet
PROJECT LOCATION:
Person County
0
below top of casing
LATITUDE:
m
=
LONGITUDE
w�
DRILLING CONTRACTOR,
T. Whitehead
TOP OF CASING ELEVATION
DESCRIPTION
2
o-
389.00
DRILLING METHOD:
J
DATUM:
DATE DRILLED:
11/11/10
LOGGED BY:
MSL
w
PROTECTIVE CASING
L. Butler
STRATA
WELL
o
0
LEGEND
m
=
DETAILS
w�
w
>�
WELL CONSTRUCTION DETAILS
DESCRIPTION
2
o-
FILTER PACK
w
J
to
pV
■ BENTONITE TOC TOP OF CASING
w
PROTECTIVE CASING
GS GROUNDSURFACE
o
0
® CEMENT GROUT SEAL
0.00
GS
386.56
Diameter:
Type:
Residuum:
® FP FILTER PIACK
CUTTINGS / BACKFILL
000
CG
386.56
Brown- Orange Fine
TSC TOP OF SCREEN
Interval:
Sandy SILT
5
5.00
BS
381.56
6 40
FR
39016
Tan - Orange Very Silty
L
CG CEMENT GROUT
T—
R
Fine to Medium
RISER CASING
AND
10
Diameter: 2
Partially Weathered
Rock: sampled as
Type PVC
Tan - Orange Silty Fine
t5
Interval +2,44 -7,7
to Coarse SAND
17.75
BSC
368 81
GROUT
1800
TD
368 56
Type. Cement
Interval. 0 -5
SEAL
Type Bentonite
Interval. 5 -6.4
FILTERPACK
Type. #2 Sand
Interval. 6.4 -18
SCREEN
Diameter: 2
Type 0.010
Interval 7.7 -17.5
COMPLETION REPORT OF
SWE WELL No. CW -2
ENGINEERING - TESTING Sheet 1 of 1
ENVIRONMENTAL SERVKES
LEGEND
FILTER PACK
e
■ BENTONITE TOC TOP OF CASING
GS GROUNDSURFACE
o
® CEMENT GROUT SEAL
® FP FILTER PIACK
CUTTINGS / BACKFILL
r
TSC TOP OF SCREEN
1 STATIC WATER LEVEL BSC BOTTOM OF SCREEN
TD TOTAL DEPTH
CG CEMENT GROUT
T—
R
COMPLETION REPORT OF
SWE WELL No. CW -2
ENGINEERING - TESTING Sheet 1 of 1
ENVIRONMENTAL SERVKES

r
1
1
1
1
r
1
c
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u
0
c
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c
0
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U
u
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COMPLETION REPORT OF WELL No. CW -1 D Sheet 1 of 1
PROJECT: Progress Energy - Mayo Steam Station
PROJECT NO- 1584 -10 -027
PROJECT LOCATION: Person County
DRILLING CONTRACTOR T. Whitehead
DRILLING METHOD 4'/4" H.S.A., 4" Air Hammer
DATE DRILLED 1118110
WATER LEVEL Depth to water 18.64 Feet
STRATA
below top of casing
LATITUDE
WELL
LONGITUDE
0
TOP OF CASING ELEVATION.
490.96
DATUM
°m
MSL
LOGGED BY:
>-
WELL CONSTRUCTION DETAILS
I Rifflar
STRATA
WELL
o
0
°m
DETAILS a
0
>-
WELL CONSTRUCTION DETAILS
DESCRIPTION
g
a.,t�
O
J
J
of
o v
w
PROTECTIVE CASING
0
0.00 1
GS
488.31 1
Diameter:
Type:
Interval:
TOPSOIL
0.00
CG
488.31
Residuum Dry Gray
Orange Slightly
5
Clayey Fine Sandy
SILT
8.00
BS
480.31
RISER CASING
Dry Light Gray Fine
10
Diameter 2
Very Sandy SILT with
Rock Fragments
15
Type PVC
Interval +2.65 -30.1
Dry Light Gray Very
Silty Fine to Medium
Sandy SAND (probe
refusal -4')
20
GROUT
Type: Cement
Partially Weathered
Rock: sampled as
Interval: 0-8
Green Silty Fine to
25
Coarse SAND
30
29.00
FP
459.31
SEAL
Type Bentonite
eta - argillite
Rock - meta argillite
3010
Green Brown SILT
Interval 8.29
Micaceous
35
FILTERPACK
Meta - argillite
Meta - argillite Green
Brown SILT
40
39 90
BSC 448.41
Type #2 Sand
caceous
Interval: 29 -10.75
SCREEN
Meta - argillite with Mi
Diameter 2
Type: 0.010
interval: 30.1 -39.9
LEGEND
FILTER PACK
■ BENTONITE TOC TOP OF CASING
GS GROUND SURFACE
® CEMENT GROUT BS BENTONITE SEAL
® CUTTINGS / BACKFILL FP FILTER PACK
TSC TOP OF SCREEN
= STATIC WATER LEVEL BSC BOTTOM OF SCREEN
TD TOTAL DEPTH
CG CEMENT GROUT
COMPLETION REPORT OF
WELL No. CW -1D
ENGINEERING • TESTING Sheet 1 Of 1
ENNRONMENUL SERVICES

I
t. I-tenriques
STRATA WELL o 0
T� DETAILS C_ >- WELL CONSTRUCTION DETAILS
DESCRIPTION M o- o W W
V1 0 J w
TOPSOIL
COMPLETION REPORT OF WELL No. CW -1 Sheet 1 of 1
PROJECT.
Progress Energy - Mayo Steam Station
0.00
PROJECT NO.
1584 -10 -027 WATER LEVEL
Depth to water 19.84 feet
PROJECT LOCATION:
Person County
below top of casing
artiallered
LATITUDE.
463,96
10
LONGITUDE:
BSC
DRILLING CONTRACTOR
T. Whitehead TOP OF CASING ELEVATION:
15
DRILLING METHOD
4" Air Hammer DATUM.
DATE DRILLED
11/9/10 1 nnrcn Ry.
MSL MSL
t. I-tenriques
STRATA WELL o 0
T� DETAILS C_ >- WELL CONSTRUCTION DETAILS
DESCRIPTION M o- o W W
V1 0 J w
TOPSOIL
TOC
0
PROTECTIVE CASING
0.00
Dry Light Gray Fine
Sandy SILT with Rock
ragments j
Diameter:
Type:
5
CG
486 -96
artiallered
ock s as
:Green-G:ra:ySand y
463,96
10
_ STATIC WATER LEVEL
BSC
ILT
RISER CASING
15
,
Partially Weathered
14.00
FP
Rock sampled as
Type: PVC
Interval: +2.92 -15.5
1550
TSC
47
Green -Gray SILT
Hard Drilling
20
Green -Gray Sandy
SILT
BSC
461.96
Intervai 0 -3
SEAL
I-A-25
Meta- argillite Rock:
461 46
(sampled as
Green -Gray Sandy
SILT Hard drillina
*SM
ENGINEERING • TESTING
ENVIRONMENTAL SERVICES
SCREEN
Diameter: 2
Type 0.010
Interval 15.5 -25.0
LEGEND
FILTER PACK
■ BENTONITE
TOC
TOP OF CASING
PROTECTIVE CASING
0.00
GS
486.96
Diameter:
Type:
000
CG
486 -96
3 08
BS
463,96
Interval.
_ STATIC WATER LEVEL
BSC
BOTTOM OF SCREEN
RISER CASING
TD
TOTAL DEPTH
Diameter 2
14.00
FP
472.96
Type: PVC
Interval: +2.92 -15.5
1550
TSC
47
GROUT
Type Cement
25.00
BSC
461.96
Intervai 0 -3
SEAL
75.50
TD
461 46
Type: Bentonite
Interval. 3 -14
FILTERPACK
i
Type #2 Sand
Interval 14 -25.5
SCREEN
Diameter: 2
Type 0.010
Interval 15.5 -25.0
LEGEND
FILTER PACK
■ BENTONITE
TOC
TOP OF CASING
GS
GROUND SURFACE
® CEMENT GROUT
BS
BENTONITE SEAL
® CUTTINGS / BACKFILL
FP
FILTER PACK
TSC
TOP OF SCREEN
_ STATIC WATER LEVEL
BSC
BOTTOM OF SCREEN
TD
TOTAL DEPTH
CG
CEMENT GROUT
COMPLETION REPORT OF
WELL No. CW -1
Sheet 1 of 1

APPENDIX A
' BORING LOGS AND MONITORING WELL
' CONSTRUCTION LOGS

TABLE 2
SAMPLE PARAMETERS, ANALYTICAL METHODS, CONTAINERS,
PRESERVATIVES AND HOLDING TIMES
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, INC., ROXBORO, NORTH CAROLINA
PARAMETERS
UNITS
CONTAINERS
PRESERVATIVES
HOLDING TIMES
ANALYTICAL METHOD
Field Parameters
Field pH
SU
Flow- through Cell
None
Analyze Immediately
YSI 556 Multi -Meter
Specific Conductivity
mmhos/cm
Flow- through Cell
None
Analyze Immediately
YSI 556 Multi -Meter
Temperature
C
Flow- through Cell
None
Analyze Immediately
YSI 556 Multi -Meter
Water Level
ft
-
-
-
Water Level Meter
Laboratory Analysis
Aluminum
mg/L
500 ml HDPE
pH < 2 HNO,
6 months
TRM i EPA 200.7
Antimony
µg/L
500 ml HDPE
pH < 2 HNO3
6 months
TRM! EPA 200.8
Arsenic
µg/L
500 ml HDPE
pH < 2 HNO,
6 months
TRM / EPA 200.8
Barium
mgrL
500 ml HDPE
pH < 2 HNO3
6 months
TRM / EPA 200.7
Boron
mgiL
500 ml HDPE
pH < 2 HNO,
6 months
TRM / EPA 200.7
Cadmium
µg /L
500 ml HDPE
pH < 2 HNO;
6 months
TRM / EPA 200.8
Chloride
mg/L
125 ml HDPE
Cool 4 C
28 days
EPA 300.0
Chromium (total)
mg/L
500 ml HDPE
pH < 2 HNO,
6 months
TRM / EPA 200.7
Copper
mg /L
500 ml HDPE
pH < 2 HNC;
6 months
TRM / EPA 200.7
Iron
mgiL
500 ml HDPE
pH < 2 HNO3
6 months
TRM / EPA 200.7
Lead
µg /L
500 ml HDPE
pH < 2 HNO,
6 months
TRM / EPA 200.8
Manganese
mgiL
500 ml HDPE
pH < 2 HNO3
6 months
TRM / EPA 200.7
Mercury
µg/L
500 ml HDPE
pH < 2 HNO3
6 months
EPA 245.1
Nickel
mgiL
500 ml HDPE
pH < 2 HNO3
6 months
TRM / EPA 200.7
Nitrate (as Nitrogen)
mgiL
125 ml HDPE
Cool 4' C
48 hours
EPA 300.0
Selenium
µgL
500 ml HDPE
pH < 2 HNO3
6 months
TRM ! EPA 200.8
Sulfate
mgiL
125 ml HDPE
Cool 4 C
28 days
EPA 300.0
Total Dissolved Solids
mg /L
250 ml HDPE
Cool 4 C
28 days
SM 2540C
Thallium
µg/L
500 ml HDPE
pH < 2 HNO,
6 months
TRM / EPA 200.8
Zinc
mgiL
500 ml HDPE
PH < 2 HNO,
6 months
TRM,' EPA 200.7
Prepared tly HJr cneCKeo by JA)'I
Notes
SU - Standard Units
mSicm - micro siemen per centimeter
It - feet
my - milli volts
mgiL - milligrams per liter
µg/L - micrograms per liter
NTU - NephelomeMC Turbidity Units
TRM - Total Recoverable Metals
EPA - Environmental Protection Agency
SM - Standard Method
P \puke Energy Progress. 1026WLL NC SITESWPDES Pemnt Deliveraoles\Mayo\GW Monitoring Plan \Tables \Tab(es i and 2

TABLE 1
MONITORING WELL INFORMATION
MAYO STEAM ELECTRIC PLANT
DUKE ENERGY PROGRESS, INC., ROXBORO, NORTH CAROLINA
WELL ID
DATE
INSTALLED
NORTHING
EASTING
USE
TYPE OF
CASING
WELL
DIAMETER
(inches)
TOP OF CASING
ELEVATION
(NAVD 88)
WELL
DEPTH*
(TOC)
WELL SCREEN
INTERVAL*
(feet BGS)
SCREEN
LENGTH
(feet)
BG -1
10/15/2008
1012000.52
2028480.40
Background
PVC
2.0
54011
55.43
42-52
10
BG -2
9/28/2010
1010809.99
2028799.48
Background
PVC
2.0
542.66
48.36
25.4-44.9
19.5
CW -1
11/9/2010
1012696.54
2032714.46
Compliance
PVC
2.0
489.88
29.11
15.5-25.0
9.5
CW -1D
11/8/2010
1012703.55
2032715.65
Compliance
PVC
2.0
490.96
43.65
30.1 -39.9
9.8
CW -2
11/11/2010
1015043.98
2032238.71
Compliance
PVC
2.0
389.00
20.50
7.7-17.5
9.8
CW -2D
11/11/2010
1015046.88
2032245.02
Compliance
PVC
2.0
389.53
58.85
45.6-55.4
9.8
CW -3
11/16/2010
1015647.59
2031278.02
Compliance
PVC
2.0
437.68
35.01
17.0-31.8
14.8
CW -4
11/12/2010
1015911.44
2030436.27
Compliance
PVC
2.0
451.31
43.08
35.0-39.8
4.8
CW -5
11/15/2010
1015162.23
2029182.29
Compliance
PVC
2.0
509.60
44.28
36.3-41.1
4.8
CW -6
11/11/2010
1014743.82
2033046.08
Compliance
PVC
2.0
462.83
80.58
72.1 -76.9
4.8
Prepared fay: AJY Checked fay: LL
Notes:
TOC - Top of Casing
BGS - Below Ground Surface
NAVD 88 - A vertical control datum in the United States by the general adjustment of 1988
- Well depths are based upon field observations. Screen intervals are based on well instalation logs.
N \Dukn Energy Progress. 102MALL NC SITES\NPOES Pertrut OebverablestMayo\GW Monitoring Plan \Tables \Tables 1 and 2 Page 1 of 1

TABLES

v
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CHAIN OF CUSTODY RECORD AND ANALYSIS REQUEST FORM
Duke _ _ _ _ _._._._._._._._._._._. r --------------------------------------------------------•-•-------
Duke Energy Analytical Lab Services j j Analytical Laboratory Use Dint i
Energy Mail Code 9 Hager (Building 7405) ! !LIMB # NC \ "Page 1 TI 1
1 I Originating 1 DISTRIBUTION
13339 Hagers Ferry Rd 1 i From SC i
Huntersville, N. C. 28078 i 'Logged te & Time SAMPLE PROGRAM I
For Detailed Instructions, see ORIGINAL to LAB.
(704) 875 -5245 j j gg ed B y i COPY to CLIENT
http / /dewww /essenv /coc/ Groundwater
Fax: [phone] i i
1)Project Name
2)Phone No:
3)Client
4)Fax No:
5)Business Unit: 20036
6)Process:
7)Resp. To:
8)Project ID:
9)Activity ID:
10)Mail Code:
i LAB USE ONLY I
'Chem Desktop
1 "Lab ID I No.
I- - -i
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FIGURE 6
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FIGURE 6
a
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L7
synTerra
Instrument ID: YSI- 556 -NIPS
Analyst:
Instrument Calibration Log
SynTerra Corporation
148 River Street, Suite 220
Greenville, South Carolina 29601
NC Field Parameter Certification No. 5591
Date:
Location:
pH Initial Calibration (standard units)
Reference Method: SW846 9040C
Cal. Time Cal. Buffer 4.0 Cal. Buffer 7.0 Cal Buffer 10.0 *Check Buffer 7.0
-pH butter checks are to be wlttun t U.1 ptl units of the standards true value
4 Buffer Reference: 10 Buffer Reference:
7 Buffer Reference: Check Buffer Reference:
pH Calibration Check {standard units)
I Time I Check Buffer True Value I *Check Buffer Measured Value
Mid -Day
End -of -Day
Other
'pH butler checks are to be witfun t 0.1 pH units of the standards true value
Check Buffer Reference: Action Required:
Specific Conductance (umhos /cm)
Rpfprpnrp Mathnrl- cwlzar, onsne
Time
Calibration Std 1413
Verification Std 1413
Initial Cal
Meter DO Reading
(mg/L
Correction
Factor
Theoretical DO
m /L
Mid -Day
Not Applicable
End -of -Day
Not Applicable
Mid -Day
-venricanon standard t lu percent of the standards true value
Calibration Standard Reference: Verification Standard Reference:
Action Required:
Dissolved Oxygen (mg /L)
Rpfprpnrp Mpthnel- SM arnn n r -7nn7
ucvicu m w - U<g nurn uissuneu V\ygen meter l.altoratlon venrlcatlon i able at anDlent temp X Correction f actor at Baromehic Pressure
Theoretical DO and Meter DO reading within _ 0 5 mE I, if not calibrate meter
Action Required: _
FIGURE 5 - EXAMPLE FIELD SAMPLING CALIBRATION FORM
Time
Temp
°C
Barometric Pressure
mm H
Meter DO Reading
(mg/L
Correction
Factor
Theoretical DO
m /L
Initial
Mid -Day
End -of -Day
ucvicu m w - U<g nurn uissuneu V\ygen meter l.altoratlon venrlcatlon i able at anDlent temp X Correction f actor at Baromehic Pressure
Theoretical DO and Meter DO reading within _ 0 5 mE I, if not calibrate meter
Action Required: _
FIGURE 5 - EXAMPLE FIELD SAMPLING CALIBRATION FORM

FIGURE 4
LOW FLOW SAMPLING LOG
DUKE ENERGY PROGRESS. INC
0 FIELD PERSONNEL:
synTerm WEATHER: ❑ SUNNY ❑ OVERCAST Cl RAIN TEMPERATURE (APPROXI
148 River Street, Suite 220 NOTES:
Greenville. South Carolina 29601
(864) 421 -9999. 18641 421 -9909 Fax
vnvw. synTerracorp. corn
WELL ID: PUMP/TUBING INTAKE DEPTH: IFT) START PURGE TIME:
MEASURING POINT: START PURGE DATE: END PURGE TIME:
WELL DIAMETER: (IN) END PURGE DATE: FINAL READING TIME:
WELL DEPTH: (FT) TOTAL VOLUME PURGED: (GAL1
DEPTH TO WATER: (FT r SAMPLE DATE: SAMPLE COLLECTION
TIME:
PURGE METHOD: ❑ Grundfos Pump ❑ 12 Volt Pump ❑ Peristaltic Pump ❑ Dedicated Pump ❑ Teflon Bailer ❑ Polyethylene Bailer
SAMPLE METHOD: ❑ Grundfos Pump ❑ 12 Volt Pump ❑ Peristaltic Pump ❑ Dedicated Pump ❑ Teflon Bailer ❑ Polyethylene Bailer
COMMENTS: FIELD VEHICLE ACCESSIBLE ❑ YES ❑ NO
Associated midday /end -of -day pH check within ±0.1 std unts? ❑ YES ❑ No If NO, pH data reported on this sheet should be considered as
flagged accordingly
' SynTerra is not NC- certified for these parameters. Data collected for information purposes only
WELL TAG PROTECTIVE CASING LOCK CAP CONCRETE PAD
] GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONI
WATER LEVEL
FLOW RATE
TEMPERATURE
CONDUCTANCE
DO
pH
ORP'
TURBIDITY'
TIME
(FT)
(mL /min)
(° Celsius)
(µS /cm)
(mg/U
(su)
(mv)
(NTU)
NOTES
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CONSTITUENTS SAMPLED
COMMENTS: FIELD VEHICLE ACCESSIBLE ❑ YES ❑ NO
Associated midday /end -of -day pH check within ±0.1 std unts? ❑ YES ❑ No If NO, pH data reported on this sheet should be considered as
flagged accordingly
' SynTerra is not NC- certified for these parameters. Data collected for information purposes only
WELL TAG PROTECTIVE CASING LOCK CAP CONCRETE PAD
] GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONI
NUMBER
OF
CONTAINERS
PRESERVATION
W
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COMMENTS: FIELD VEHICLE ACCESSIBLE ❑ YES ❑ NO
Associated midday /end -of -day pH check within ±0.1 std unts? ❑ YES ❑ No If NO, pH data reported on this sheet should be considered as
flagged accordingly
' SynTerra is not NC- certified for these parameters. Data collected for information purposes only
WELL TAG PROTECTIVE CASING LOCK CAP CONCRETE PAD
] GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONE ❑ GOOD ❑ BAD ❑ NONI

ABOVEGROUND WELL PROTECTOR
(L INCH X L INCH X 5 FOOT STEEL CASING WITH
HINGED LOCKABLE LID)
2' -6" TO 3'-0" (NOMINAL.)
STICK -UP
NEAT CEMENT OR NEAT CEMENT BENTONITE
MIX FROM BENTONITE SEAL TO GROUND
SURFACE -C::::,
WELL SCREEN
(0 -010" MANUFACTURED SLOTS, TYPICAL)
WELL PACKING
(TYP. #1 OR #2 SAND)
MALE PVC PLUG
DRILL i" DIAMETER VENT HOLE BELOW
PLUG
2' DIA. PVC
WELL CASING i- GROUND SURFACE
CONCRETE PAD
MIN. 2 FT X 2 FT SQUARE
BORING
(8" NOMINAL DIAMETER)
- - - - -- BENTONITE SEAL
2' -0" (MINIMUM)
2' -0" (MINIMUM)
SCREEN LENGTH VARIES
(5' TO 15' TYP.)
G_L' OF WELL SAND
ical Well Construction Details
(no scale)
INFORMATION PROVIDED BY DUKE ENERGY CAROLINAS, LLC
FIGURE 3
GENERALIZED WELL SCHEMATIC
148 RIVER STREET. SUITE 220
GREENVILLE. SOUTH CAROLINA 29601
PHONE [phone]
it?
http Uwww. synte mworp. com
H Frank Date 8/212014
synTerra
PR
PROJECT MINA GER. Kathy Nebb
FIGURE 3
GENERALIZED WELL SCHEMATIC

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APPENDIX A
EDR REPORT

Duke Energy - Mayo
10600 Boston Rd.
Roxboro, NC 27574
Inquiry Number: 3887559.1s
March 21, 2014
6 Armstrong Road, 4th Floor
Shelton, CT 06484
(rEDR'5 E nvironmental Data ReSollr -eS Inc Toll Free 800.352.0050
www.edrnet.com
FORM- NULL -CCA

TABLE OF CONTENTS
SECTION PAGE
GEOCHECK ADDENDUM
Physical Setting Source Addendum____________ ____________________________ A -1
Physical Setting Source Summary ___________ _______________________________ A -2
Physical Setting Source Map__________________ ___________ A -7
Physical Setting Source Map Findings --------- ______________________________ A -8
Physical Setting Source Records Searched ____ _______________________________ A -17
Thank you for your business.
Please contact EDR at 1- 800 - 352 -0050
with any questions or comments.
Disclaimer - Copyright and Trademark Notice
This Report contains certain information obtained from a variety of public and other sources reasonably availablege to Eppnvironmental Data
other sources cNO WARRANTY EXPRESSED OR IMPLIED, IS MADE WHATSOEVER IN CONNECTION WITH STHISuREPORToEN IIRONMENTALexist from
DATA RESOURCES, INC. SPECIFICALLY DISCLAIMS THE MAKING OF ANY SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE. ALL RISK IS ASSUMED BY THE USER. IN NO EVENT SHALL
ENVIRONMENTAL DATA RESOURCES, INC. BE LIABLE TO ANYONE, WHETHER ARISING OUT OF ERRORS OR OMISSIONS, NEGLIGENCE,
ACCIDENT OR ANY OTHER CAUSE, FOR ANY LOSS OF DAMAGE, INCLUDING, WITHOUT LIMITATION, SPECIAL, INCIDENTAL,
CONSEQUENTIAL, OR EXEMPLARY DAMAGES. ANY LIABILITY ON THE PART OF ENVIRONMENTAL DATA RESOURCES, INC. IS STRICTLY
LIMITED TO A REFUND OF THE AMOUNT PAID FOR THIS REPORT. Purchaser accepts this Report "AS IS ". Any analyses, estimates, ratings,
environmental risk levels or risk codes provided in this Report are provided for illustrative purposes only, and are not intended to provide, nor
should they be interpreted as providing any facts regarding, or prediction or forecast of, any environmental risk for any property. Only a Phase I
Environmental Site Assessment performed by an environmental professional can provide information regarding the environmental risk for any
property Additionally, the information provided in this Report is not to be construed as legal advice.
Copyright 2014 by Environmental Data Resources, Inc. All rights reserved. Reproduction in any media or format, in whole
or in part, of any report or map of Environmental Data Resources. Inc. or its affiliates, is prohibited without prior written permission
EDR and its logos (including Sanborn and Sanborn Map) are trademarks of Environmental Data Resources. Inc. or its affiliates. All other
trademarks used herein are the property of their respective owners.
TC3887559.1 s Page 1

GEOCHECFC" - PHYSICAL SETTING SOURCE REPORT
TARGET PROPERTY ADDRESS
DUKE ENERGY - MAYO
10600 BOSTON RD.
ROXBORO, NC 27574
TARGET PROPERTY COORDINATES
Latitude (North):
36.5353 - 36° 32'7-08"
Longitude (West):
78.8957 - 78' 53'44.52"
Universal Tranverse Mercator:
Zone 17
UTM X (Meters):
688382.6
UTM Y (Meters):
4045181.8
Elevation:
478 ft. above sea level
USGS TOPOGRAPHIC MAP
Target Property Map: 36078 -E8 CLUSTER SPRINGS, VA NC
Most Recent Revision: 1987
EDR's GeoCheck Physical Setting Source Addendum is provided to assist the environmental professional in
forming an opinion about the impact of potential contaminant migration.
Assessment of the impact of contaminant migration generally has two principal investigative components:
1. Groundwater flow direction, and
2. Groundwater flow velocity.
Groundwater flow direction may be impacted by surface topography, hydrology, hydrogeology, characteristics
of the soil, and nearby wells. Groundwater flow velocity is generally impacted by the nature of the
geologic strata.
TC3887559.1 s Page 1

GEOCHECK' - PHYSICAL SETTING SOURCE SUMMARY
GROUNDWATER FLOW DIRECTION INFORMATION
Groundwater flow direction for a particular site is best determined by a qualified environmental professional
using site - specific well data. If such data is not reasonably ascertainable, it may be necessary to rely on other
sources of information, such as surface topographic information, hydrologic information, hydrogeologic data
collected on nearby properties, and regional groundwater Flow information (from deep aquifers).
TOPOGRAPHIC INFORMATION
Surface topography may be indicative of the direction of surficial groundwater flow. This information can be used to
assist the environmental professional in forming an opinion about the impact of nearby contaminated properties or,
should contamination exist on the target property, what downgradient sites might be impacted.
TARGET PROPERTY TOPOGRAPHY
General Topographic Gradient: General SE
SURROUNDING TOPOGRAPHY: ELEVATION PROFILES
r
C
o N
Uj
North
TP
2
DJ A 00 m m W � N
South
West I East
TP
0 1/2 1 Miles
Target Property Elevation: 478 ft.
Source: Topography has been determined from the USGS 7.5' Digital Elevation Model and should be evaluated
on a relative (not an absolute) basis. Relative elevation information between sites of close proximity
should be field verified.
TC3887559.1s Page 2

GEOCHECK" - PHYSICAL SETTING SOURCE SUMMARY
HYDROLOGIC INFORMATION
Surface water can act as a hydrologic barrier to groundwater flow. Such hydrologic information can be used to assist
the environmental professional in forming an opinion about the impact of nearby contaminated properties or, should
contamination exist on the target property, what downgradient sites might be impacted.
Refer to the Physical Setting Source Map following this summary for hydrologic information (major waterways
and bodies of water).
FEMA FLOOD ZONE
FEMA Flood
Target Property County Electronic Data
PERSON, NC YES - refer to the Overview Map and Detail Map
Flood Plain Panel at Target Property: 37145C - FEMA DFIRM Flood data
Additional Panels in search area: 51083C FEMA DFIRM Flood data
NATIONAL WETLAND INVENTORY
NWI Quad at Target Property
CLUSTER SPRINGS
HYDROGEOLOGIC INFORMATION
NWI Electronic
Data Coverage
YES - refer to the Overview Map and Detail Map
Hydrogeologic information obtained by installation of wells on a specific site can often be an indicator
of groundwater flow direction in the immediate area. Such hydrogeologic information can be used to assist the
environmental professional in forming an opinion about the impact of nearby contaminated properties or, should
contamination exist on the target property, what downgradient sites might be impacted.
AQUIFLOW
Search Radius: 1.000 Mile.
EDR has developed the AQUIFLOW Information System to provide data on the general direction of groundwater
flow at specific points. EDR has reviewed reports submitted by environmental professionals to regulatory
authorities at select sites and has extracted the date of the report, groundwater flow direction as determined
hydrogeologically, and the depth to water table.
LOCATION GENERAL DIRECTION
MAP ID FROM TP GROUNDWATER FLOW
Not Reported
TC3887559 1s Page 3

' GEOCHECW - PHYSICAL SETTING SOURCE SUMMARY
' GROUNDWATER FLOW VELOCITY INFORMATION
Groundwater flow velocity information for a particular site is best determined by a qualified environmental professional
using site specific geologic and soil strata data. If such data are not reasonably ascertainable, it may be necessary
to rely on other sources of information, including geologic age identification, rock stratigraphic unit and soil
characteristics data collected on nearby properties and regional soil information. In general, contaminant plumes
move more quickly through sandy - gravelly types of soils than silty- clayey types of soils.
' GEOLOGIC INFORMATION IN GENERAL AREA OF TARGET PROPERTY
Geologic information can be used by the environmental professional in forming an opinion about the relative speed
at which contaminant migration may be occurring.
' ROCK STRATIGRAPHIC UNIT GEOLOGIC AGE IDENTIFICATION
Era: Paleozoic Category: Volcanic Rocks
System: Cambrian
Series: Cambrian volcanic rocks
Code: Cv (decoded above as Era. System 8 Series)
Geologic Age and Rock Stratigraphic Unit Source: P.G. Schruben, R.E. Arndt and W.J. Bawiec, Geology
' of the Conterminous U.S- at 1:2,500,000 Scale - a digital representation of the 1974 P.B. King and H.M. Beikman
Map, USGS Digital Data Series DDS - 11 (1994).
DOMINANT SOIL COMPOSITION IN GENERAL AREA OF TARGET PROPERTY
' The U.S. Department of Agriculture's (USDA) Soil Conservation Service (SCS) leads the National Cooperative Soil
Survey (NCSS) and is responsible for collecting, storing, maintaining and distributing soil survey information
for privately owned lands in the United States. A soil map in a soil survey is a representation of soil patterns
in a landscape. Soil maps for STATSGO are compiled by generalizing more detailed (SSURGO) soil survey maps.
' The following information is based on Soil Conservation Service STATSGO data.
Soil Component Name: IREDELL
Soil Surface Texture: loam
Hydrologic Group: Class CID - Drained /undrained hydrology class of soils that can be
drained and classified.
' Soil Drainage Class: Not reported
Hydric Status: Soil does not meet the requirements for a hydric soil.
' Corrosion Potential - Uncoated Steel: HIGH
Depth to Bedrock Min: > 60 inches
' Depth to Bedrock Max: > 60 inches
TC3887559.1 s Page 4

GEOCHECK" - PHYSICAL SETTING SOURCE SUMMARY
Soil Layer Information
Boundary
Classification
Layer
Upper
Lower
Soil Texture Class
AASHTO Group
Unified Soil
Permeability
Soil Reaction
Rate (in/hr)
(pH)
1
0 inches
7 inches
loam
Silt -Clay
FINE - GRAINED
Max: 2.00
Max: 7.30
Materials (more
SOILS, Silts and
Min: 0.60
Min: 5.10
than 35 pct.
Clays (liquid
passing No.
limit less than
200). Silty
50 %), silt.
Soils.
2
7 inches
24 inches
clay
Silt -Clay
FINE- GRAINED
Max: 0 20
Max: 7.30
Materials (more
SOILS, Silts and
Min: 0.06
Min: 5.60
than 35 pct.
Clays (liquid
passing No.
limit 50% or
200), Clayey
more), Fat Clay.
Soils.
3
24 inches
27 inches
loam
Silt -Clay
FINE - GRAINED
Max: 0.20
Max: 7.80
Materials (more
SOILS, Silts and
Min: 0.06
Min: 6.10
than 35 pct.
Clays (liquid
passing No.
limit less than
200), Clayey
50 %). Lean Clay
Soils.
4
27 inches
62 inches
variable
Not reported
Not reported
Max: 0.00
Max: 0.00
Min: 0.00
1 Min: 0.00
OTHER SOIL TYPES IN AREA
Based on Soil Conservation Service STATSGO data, the following additional subordinant soil types may
appear within the general area of target property.
Soil Surface Textures: fine sandy loam
silt loam
channery - silt loam
Surficial Soil Types: fine sandy loam
silt loam
channery - silt loam
Shallow Soil Types: clay loam
sandy clay
sandy loam
silt loam
sandy clay loam
very channery - silt loam
Deeper Soil Types: sandy loam
unweathered bedrock
TC3887559.1s Page 5

GEOCHECW - PHYSICAL SETTING SOURCE SUMMARY
LOCAL ! REGIONAL WATER AGENCY RECORDS
EDR Local /Regional Water Agency records provide water well information to assist the environmental
professional in assessing sources that may impact ground water flow direction, and in forming an
opinion about the impact of contaminant migration on nearby drinking water wells.
WELL SEARCH DISTANCE INFORMATION
DATABASE
SEARCH DISTANCE (miles)
Federal USGS
1.000
Federal FRDS PWS
1.000
State Database
1.000
FEDERAL USGS WELL INFORMATION
LOCATION
MAP ID WELL ID FROM TP
1 USGS40000897734 1/4 - 112 Mile NW
FEDERAL FRDS PUBLIC WATER SUPPLY SYSTEM INFORMATION
LOCATION
MAP ID WELL ID FROM TP
2 NCO273427 112 - 1 Mile ESE
Note: PWS System location is not always the same as well location.
STATE DATABASE WELL INFORMATION
LOCATION
MAP ID WELL ID FROM TP
No Wells Found
OTHER STATE DATABASE INFORMATION
NORTH CAROLINA WILDLIFE RESOURCES COMMISSION GAME LANDS DATABASE
Site Name
NC30000006
NC30000008
N C30000009
NC30000013
TC3887559.1s Page 6

PHYSICAL SETTING SOURCE MAP - 3887559.1s
Al County Boundary
Major Roads
Contour Lines
A" Power transmission lines
OEarthquake epicenter. Richter 5 or greater
® Water Wells
© Public Water Supply Wells
0 Cluster of Multiple Icons
a w !9 vV
Groundwater Flow Direction Wildlife Areas
G I Indeterminate Groundwater Flow at Location ED Natural Areas
Cv Groundwater Flow Varies at Location Rare & Endangered Species
100 -year flood zone
500 -year flood zone
■ National Wetland Inventory
SITE NAME: Duke Energy - Mayo
CLIENT: SynTerra
ADDRESS: 10600 Boston Rd.
CONTACT: Richard Jacobs
Roxboro NC 27574
INQUIRY #: 3887559.18
LAT /LONG: 36.5353/78.8957
DATE: March 21, 2014 11:15 am
Copyright 7 2014 EDR, Inc. 'c 2010 Tole Atlas Pal. 972009.

GEOCHECK x - PHYSICAL SETTING SOURCE MAP FINDINGS
ITC3887559.1 s Page 8
Map ID
'
Direction
Distance
Elevation
Database EDR ID Number
'Higher
NW
FED USGS USGS40000897734
114 - 112 Mile
Org.ldentifier:
USGS -NC
Formal name:
USGS North Carolina Water Science Center
'
Monloc Identifier:
USGS- 363220078540501
Monloc name:
PS -004
Monloc type.
Well
Monloc desc:
Not Reported
Huc code:
Not Reported
Drainagearea value:
Not Reported
Drainagearea Units:
Not Reported
Contrib drainagearea:
Not Reported
Contrib drainagearea units:
Not Reported
Latitude:
36.5390292
Longitude:
- 78.9011203
Sourcemap scale:
Not Reported
Horiz Acc measure:
1
Horiz Acc measure units:
seconds
Horiz Collection method:
Interpolated from map
Horiz coord refsys:
NAD83
Vert measure val.
Not Reported
Vert measure units:
Not Reported
Vertacc measure val:
Not Reported
Vert accmeasure units:
Not Reported
Vertcollection method:
Not Reported
Vert coord refsys:
Not Reported
Countrycode:
US
Aquifername:
Piedmont and Blue Ridge crystalline
-rock aquifers
Formation type:
Felsic Gneiss
Aquifer type.
Not Reported
Construction date:
Not Reported
Welldepth:
87
Welldepth units:
ft
Wellholedepth:
Not Reported
Wellholedepth units:
Not Reported
'
Ground -water levels, Number of Measurements: 0
2
'
ESE
FRDS PWS NCO273427
112 - 1 Mile
Lower
Pwsid
NCO273427
Epa region:
04
'
State:
NC
County:
Person
Pws name:
CP &L -MAYO ELEC GEN PLANT
Population Served:
70
Pwssvcconn:
6
PWS Source:
Surface water
Pws type:
NTNCWS
Status:
Active
Owner type
Private
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
'
Facility type:
Distribution_system_zone
Treatment process:
sedimentation
Treatment objective:
disinfection by- products control
Contact name:
BEASLEY, ROBERT E
Original name:
BEASLEY, ROBERT E
Contact phone:
336 - 599 -0218
Contact address 1:
10660 BOSTON ROAD
Contact address2:
Not Reported
Contact city:
ROXBORO
Contact zip:
27573
ITC3887559.1 s Page 8

GEOCHECK' - PHYSICAL SETTING SOURCE MAP FINDINGS
Facility id:
39229
Facility name:
MAYO LAKE
Facility type
Intake
Treatment process
Treatment objective:
disinfection by- products control
Facility id.
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_zone
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
5655
Facility name:
TREATMENT—PLT—MAYO STEAM PLT
Facility type:
Treatment_plant
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process.
Treatment objective:
disinfection by- products control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_zone
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
5655
Facility name:
TREATMENT—PLT—MAYO STEAM
PLT
Facility type:
Treatment _plant
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name
STORAGE_GROUND_1
Facility type:
Storage
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process:
Treatment objective:
disinfection by- products control
Facility id
39229
Facility name:
MAYO LAKE
Facility type
Intake
Treatment process:
Treatment objective:
disinfection by- products control
activated carbon, granular
activated carbon, granular
activated carbon, granular
coagulation
coagulation
coagulation
coagulation
coagulation
filtration, pressure sand
filtration, pressure sand
filtration, pressure sand
TC38875591s Page 9

TC3887559.1s Page 10
GEOCHECK9- PHYSICAL SETTING
SOURCE MAP FINDINGS
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_zone
Treatment process:
filtration, pressure sand
Treatment objective:
disinfection by- products control
Facility id
5655
Facility name:
TREATMENT—PLT—MAYO STEAM PLT
Facility type:
Treatment plant
Treatment process
filtration, pressure sand
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage
Treatment process:
sedimentation
Treatment objective:
disinfection by- products control
Facility id:
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process:
sedimentation
Treatment objective:
disinfection by- products control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process
sedimentation
Treatment objective:
disinfection by- products control
Facility id:
5655
Facility name:
TREATMENT—PLT—MAYO STEAM PLT
Facility type:
Treatment_ plant
Treatment process:
sedimentation
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage
Treatment process:
ph adjustment, post
Treatment objective:
disinfection by- products control
Facility id:
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process:
ph adjustment, post
Treatment objective:
disinfection by- products control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process:
ph adjustment, post
Treatment objective:
disinfection by- products control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_ zone
Treatment process:
ph adjustment, post
Treatment objective:
disinfection by- products control
Facility id:
5655
Facility name:
TREATMENT—PLT—MAYO STEAM PLT
Facility type
Treatment_plant
Treatment process:
ph adjustment, post
Treatment objective:
disinfection by- products control
TC3887559.1s Page 10

GEOCHECK1- PHYSICAL SETTING SOURCE MAP FINDINGS
Facility id:
1184
Facility name:
STORAGE_GROUND_t
Facility type:
Storage
Treatment process:
Treatment objective
disinfection by- products control
Facility id
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_ zone
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage
Treatment process:
Treatment objective:
organics removal
Facility id:
3150
Facility name:
STORAGE_HYDRO_1
Facility type
Storage
Treatment process:
Treatment objective:
organics removal
Facility id:
5655
Facility name:
TREATMENT_PLT_MAYO STEAM PLT
Facility type:
Treatment plant
Treatment process:
Treatment objective:
disinfection by- products control
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage
Treatment process:
Treatment objective:
corrosion control
Facility id:
3150
Facility name:
STORAGE—HYDRO-1
Facility type:
Storage
Treatment process:
Treatment objective
corrosion control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process:
Treatment objective:
corrosion control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_ zone
Treatment process:
Treatment objective:
corrosion control
ph adjustment. pre
ph adjustment, pre
ph adjustment, pre
ph adjustment, pre
flocculation
flocculation
ph adjustment, pre
inhibitor, polyphosphate
inhibitor, polyphosphate
inhibitor, polyphosphate
inhibitor. polyphosphate
TC3887559 1s Page 11

GEOCHECK9- PHYSICAL SETTING SOURCE MAP FINDINGS
Facility id:
5655
Facility name:
TREATMENT-PLT-MAYO STEAM PLT
Facility type:
Treatment _plant
Treatment process
Treatment objective:
corrosion control
Facility id:
1184
Facility name:
STORAGE_GROUND_1
Facility type:
Storage
Treatment process:
Treatment objective:
corrosion control
Facility id:
3150
Facility name:
STORAGE-HYDRO-1
Facility type:
Storage
Treatment process:
Treatment objective:
corrosion control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process
Treatment objective:
corrosion control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_zone
Treatment process:
Treatment objective:
corrosion control
Facility id:
5655
Facility name:
TREATMENT-PLT-MAYO STEAM
PLT
Facility type:
Treatment_plant
Treatment process:
Treatment objective:
corrosion control
Facility id:
1184
Facility name:
STORAGE-GROUND-1
Facility type:
Storage
Treatment process:
Treatment objective:
corrosion control
Facility id:
3150
Facility name:
STORAGE-HYDRO-1
Facility type:
Storage
Treatment process:
Treatment objective:
corrosion control
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake
Treatment process
Treatment objective
corrosion control
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_ zone
Treatment process:
Treatment objective
corrosion control
Facility id:
5655
Facility name:
TREATMENT-PLT-MAYO STEAM PLT
Facility type:
Treatment _plant
Treatment process:
Treatment objective:
corrosion control
inhibitor, polyphosphate
ph adjustment
ph adjustment
ph adjustment
ph adjustment
ph adjustment
ph adjustment, post
ph adjustment, post
ph adjustment, post
ph adjustment, post
ph adjustment, post
TC3887559 1s Page 12

GEOCHECK - PHYSICAL SETTING SOURCE MAP FINDINGS
Facility id:
3150
Facility name:
STORAGE_HYDRO_1
Facility type:
Storage Treatment process:
Treatment objective:
manganese removal
Facility id:
39229
Facility name:
MAYO LAKE
Facility type:
Intake Treatment process:
Treatment objective:
manganese removal
Facility id:
50740
Facility name:
DISTRIBUTION SYSTEM
Facility type:
Distribution_system_ zone Treatment process:
Treatment objective:
manganese removal
Facility id:
5655
Facility name:
TREATMENT_PLT_MAYO STEAM PLT
Facility type:
Treatmentplant Treatment process:
Treatment objective:
manganese removal
Facility id:
1184
Facility name:
STORAGE—GROUND-1
Facility type:
Storage Treatment process:
Treatment objective:
manganese removal
PWS ID:
NCO273427
Date Initiated:
8001 Date Deactivated: Not Reported
PWS Name:
MAYO STEAM PLANT
ROXBORO, NC 27562
Addressee / Facility:
System Owner /Responsible Party
MARSHALL LUNDSFORD OR MANAGER
RT 1 BOX 327
NEW HILL, NC 27562
Addressee / Facility:
System Owner /Responsible Party
CAROLINA POWER & LIGHT CO
PO BOX 1551
RALEIGH, NC 27602
sedimentation
sedimentation
sedimentation
sedimentation
sludge treatment
Facility Latitude: 3631 40 Facility Longitude: 078 52 50
Facility Latitude: 36 23 36 Facility Longitude: 078 58 59
City Served: ROXBORO
Treatment Class: Treated Population: 00000067
PWS currently has or had major violation(s) or enforcement YES
N150 WIN d Eel i"112,[Me : &L'ure k►F
Violation ID:
9403206
Source ID Not Reported
PWS Phone:
Vic. beginning Date:
11/01/93
Vio. end Date: 11/30/93
Vio. Period:
Num required Samples:
Not Reported
Number of Samples Taken:
Not Reported
Analysis Result:
Not Reported
Maximum Contaminant Level:
Not Reported
Analysis Method
Not Reported
Violation Type:
Monitoring, Routine
/Repeat (SWTR- Filter)
Contaminant:
Not Reported
Vio. Awareness Date
Not Reported
Not Reported
001 Months
TC3887559 1s Page 13

GEOCHECK8- PHYSICAL SETTING SOURCE MAP FINDINGS
ENFORCEMENT INFORMATION
System Name
CP &L -MAYO ELEC GEN PLANT
Violation Type:
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period:
1/1/2004 0:00:00 - 1/31/2004 0:00:00
Violation ID:
304
Enforcement Date:
3/10/2004 0:00:00
Enf. Action: State Formal NOV Issued
System Name
CP &L -MAYO ELEC GEN PLANT
Violation Type:
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period:
1/1/2004 0:00:00 - 1/31/2004 0:00:00
Violation ID:
304
Enforcement Date:
3/10/2004 0:00:00
Enf. Action: State Public Notif Requested
System Name:
CP &L -MAYO ELEC GEN PLANT
Violation Type.
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period:
1/1/2004 0:00:00 - 1/31/2004 0:00:00
Violation ID:
304
Enforcement Date:
3/16/2004 0:00:00
Enf. Action: State Compliance Achieved
System Name:
CP &L -MAYO ELEC GEN PLANT
Violation Type.
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period
1/1/2004 0:00:00 - 1/31/2004 0:0000
Violation ID:
304
Enforcement Date:
3/10/2004 0:00:00
Enf. Action: State Formal NOV Issued
System Name:
CP &L -MAYO ELEC GEN PLANT
Violation Type:
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period:
1/1/2004 0:00:00 - 1/31/2004 0:00:00
Violation ID:
304
Enforcement Date:
3/10/2004 0:00:00
Enf Action: State Public Notif Requested
System Name
CP &L -MAYO ELEC GEN PLANT
Violation Type
Monitoring, Routine Major (TCR)
Contaminant:
COLIFORM (TCR)
Compliance Period:
1/1/2004 0:00:00 - 1/31/2004 0:00:00
Violation ID:
304
Enforcement Date:
3/16/2004 0:00:00
Enf. Action: State Compliance Achieved
TC3887559.1 s Page 14

GEOCHECK ,V- PHYSICAL SETTING SOURCE MAP FINDINGS
Map ID
Direction
Distance Databas . PnR ID N imb r
Site Name:
Owner:
Site Type
Status:
Mayo
Carolina Power & Light
Game Land
PRV
Acres:
County:
NC—WILD
1242.84973144531
PERSON
NC30000006
NC—WILD
NC30000008
Site Name:
Mayo
Owner
Carolina Power & Light
Site Type:
Game Land
Acres:
4166.9736328125
Status:
PRV
County:
PERSON
NC—WILD
NC30000009
Site Name:
Mayo
Owner:
Carolina Power & Light
Site Type:
Safety Zone
Acres:
1029.91821289063
Status:
PRV
County:
PERSON
NC—WILD
NC30000013
Site Name:
Mayo
Owner:
Carolina Power & Light
Site Type:
Game Land
Acres:
29.5865421295166
Status:
PRV
County:
PERSON
TC3887559.1s Page 15

GEOCHECK - PHYSICAL SETTING SOURCE MAP FINDINGS
RADON
AREA RADON INFORMATION
State Database: NC Radon
Radon Test Results
Num Results Avg pCi /L Min pCi /L Max pCi /L
2 0.95 0.8 1.1
Federal EPA Radon Zone for PERSON County: 3
Note: Zone 1 indoor average level > 4 pCi /L.
Zone 2 indoor average level >= 2 pCi /L and <= 4 pCi /L.
Zone 3 indoor average level < 2 pCi /L.
Federal Area Radon Information for PERSON COUNTY, NC
Number of sites tested: 1
Area
Average Activity
% <4 pCi /L
Living Area - 1st Floor
1.200 pCi /L
100%
Living Area - 2nd Floor
Not Reported
Not Reported
Basement
Not Reported
Not Reported
% 4 -20 pCi /L % >20 pCi /L
0% 0%
Not Reported Not Reported
Not Reported Not Reported
TC3887559.1s Page 16

PHYSICAL SETTING SOURCE RECORDS SEARCHED
TOPOGRAPHIC INFORMATION
USGS 7.5' Digital Elevation Model (DEM)
Source: United States Geologic Survey
EDR acquired the USGS 7.5' Digital Elevation Model in 2002 and updated it in 2006. The 7.5 minute DEM corresponds
to the USGS 1:24,000- and 1:25,000 -scale topographic quadrangle maps. The DEM provides elevation data
with consistent elevation units and projection.
HYDROLOGIC INFORMATION
Flood Zone Data This data, available in select counties across the country, was obtained by EDR in 2003 & 2011 from the Federal
Emergency Management Agency (FEMA). Data depicts 100 -year and 500 -year flood zones as defined by FEMA.
NWI National Wetlands Inventory. This data. available in select counties across the country, was obtained by EDR
in 2002, 2005 and 2010 from the U.S. Fish and Wildlife Service.
State Wetlands Data Wetlands Inventory
Source: Department of Environment & Natural Resources
Telephone: [phone]
HYDROGEOLOGIC INFORMATION
AQUIFLOWR Information System
Source: EDR proprietary database of groundwater flow information
EDR has developed the AQUIFLOW Information System (AIS) to provide data on the general direction of groundwater
flow at specific points. EDR has reviewed reports submitted to regulatory authorities at select sites and has
extracted the date of the report, hydrogeologically determined groundwater flow direction and depth to water table
information.
GEOLOGIC INFORMATION
Geologic Age and Rock Stratigraphic Unit
Source: P.G. Schruben, R.E. Arndt and W.J. Bawiec. Geology of the Conterminous U.S. at 1:2,500,000 Scale - A digital
representation of the 1974 P.B. King and H.M. Beikman Map. USGS Digital Data Series DDS - 11 (1994).
STATSGO State Soil Geographic Database
Source: Department of Agriculture, Natural Resources Conservation Services
The U.S. Department of Agriculture's (USDA) Natural Resources Conservation Service (NRCS) leads the national
Conservation Soil Survey (NCSS) and is responsible for collecting, storing. maintaining and distributing soil
survey information for privately owned lands in the United States. A soil map in a soil survey is a representation
of soil patterns in a landscape. Soil maps for STATSGO are compiled by generalizing more detailed ( SSURGO)
soil survey maps
SSURGO: Soil Survey Geographic Database
Source: Department of Agriculture, Natural Resources Conservation Services (NRCS)
Telephone: 800 - 672 -5559
SSURGO is the most detailed level of mapping done by the Natural Resources Conservation Services mapping
scales generally range from 1:12,000 to 1:63,360. Field mapping methods using national standards are used to
construct the soil maps in the Soil Survey Geographic ( SSURGO) database. SSURGO digitizing duplicates the
original soil survey maps. This level of mapping is designed for use by landowners, townships and county
natural resource planning and management.
TC38875591s Page A -17

PHYSICAL SETTING SOURCE RECORDS SEARCHED
'
LOCAL / REGIONAL WATER AGENCY RECORDS
FEDERAL WATER WELLS
PWS Public Water Systems
Source: EPA/Office of Drinking Water
Telephone: 202 - 564 -3750
Public Water System data from the Federal Reporting Data System A PWS is any water system which provides water to at
least 25 people for at least 60 days annually PWSs provide water from wells. rivers and other sources.
PWS ENF: Public Water Systems Violation and Enforcement Data
Source: EPA/Office of Drinking Water
'
Telephone: 202 - 564 -3750
Violation and Enforcement data for Public Water Systems from the Safe Drinking Water Information System (SDWIS) after
August 1995. Prior to August 1995, the data came from the Federal Reporting Data System (FRDS).
'
USGS Water Wells: USGS National Water Inventory System (NWIS)
This database contains descriptive information on sites where the USGS collects or has collected data on surface
water and /or groundwater. The groundwater data includes information on wells. springs, and other sources of groundwater.
STATE RECORDS
North Carolina Public Water Supply Wells
Source: Department of Environmental Health
' Telephone: [phone]
OTHER STATE DATABASE INFORMATION
' NC Natural Areas: Significant Natural Heritage Areas
Source: Center for Geographic Information and Analysis
Telephone: [phone]
A polygon converage identifying sites (terrestrial or aquatic that have particular biodiversity significance.
' A site's significance may be due to the presenceof rare species, rare or hight quality natural communities, or
other important ecological features.
NC Game Lands: Wildlife Resources Commission Game Lands
' Source: Center for Geographic Information and Analysis
Telephone: [phone]
All publicly owned game lands managed by the North Carolina Wildlife Resources Commission and as listed in Hunting
and Fishing Maps
' NC Natural Heritage Sites: Natural Heritage Element Occurrence Sites
Source: Center for Geographic Information and Analysis
Telephone: [phone]
A point coverage identifying locations of rare and endangered species, occurrences of exemplary or unique natural
ecosystems (terrestrial or aquatic), and special animal habitats (e g.. colonial waterbird nesting sites).
RADON
State Database: NC Radon
Source: Department of Environment & Natural Resources
Telephone: [phone]
Radon Statistical and Non Statiscal Data
Area Radon Information
Source: USGS
Telephone: 703 - 356 -4020
The National Radon Database has been developed by the U S Environmental Protection Agency
(USEPA) and is a compilation of the EPA/State Residential Radon Survey and the National Residential Radon Survey
The study covers the years 1986 - 1992. Where necessary data has been supplemented by information collected at
private sources such as universities and research institutions
TC3887559 1s Page A -18

PHYSICAL SETTING SOURCE RECORDS SEARCHED
EPA Radon Zones
Source: EPA
Telephone: 703 - 356 -4020
Sections 307 & 309 of IRAA directed EPA to list and identify areas of U S with the potential for elevated indoor
radon levels.
OTHER
Airport Landing Facilities: Private and public use landing facilities
Source: Federal Aviation Administration, 800- 457 -6656
Epicenters: World earthquake epicenters, Richter 5 or greater
Source: Department of Commerce, National Oceanic and Atmospheric Administration
Earthquake Fault Lines: The fault lines displayed on EDR's Topographic map are digitized quaternary faultlines. prepared
in 1975 by the United State Geological Survey
STREET AND ADDRESS INFORMATION
© 2010 Tele Atlas North America, Inc. All rights reserved. This material is proprietary and the subject of copyright protection
and other intellectual property rights owned by or licensed to Tele Atlas North America, Inc. The use of this material is subject
to the terms of a license agreement. You will be held liable for any unauthorized copying or disclosure of this material.
TC3887559 1 s Page A -19

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