20080868 Ver 2_Bonnerton Stratigraphy Study_20151130

PotashCorp'
Helping Nature Provide
Certified Mail
November 24, 2015
Ms. Karen Higgins
401 and Buffer Permitting Unit Supervisor
NC DEQ Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Bonnerton Stratigraphy Study for PCS Phosphate
Dear Ms. Higgins:
20016 u ftZS v 4.
PotashCorp - Atirora
,V
Nov 3 p zor5 1
The NC Division of Water Quality (now Division of Water Resources) issued to PCS Phosphate
(PCS) 401 Certification No. 3771, DWQ #2008-0868 version 2.0 on January 15, 2009, for our
mine continuation in Beaufort County. Language within the second paragraph of Condition 9 of
the Certification, talking about the 1,145 -foot wide mining corridor through the narrowest
portion of the Bonnerton Non-Riverine Wet Hardwood Forest states:
"A detailed stratigraphy study shall be done on both sides and throughout the area to be
mined in order to determine the presence, extent and permability of any aquitards and
aquicludes (mainly clay -based) within the mining corridor." Condition 9 also states
"Additional written approval is needed from DWQ before this stratigraphic study is done
or restoration is initiated."
The plan for the study was approved by DWR in your letter dated July 6, 2015, and geotechnical
work was begun later that month. Enclosed are two copies of the final report by Groundwater
Management Associates, Inc titled "Site Investigation Report, Bonnerton Stratigraphy Study,
PotashCorp-Aurora, Beaufort County, North Carolina". We will now utilize this report to
develop and submit a reclamation and revegetation plan for this mining corridor through the
Bonnerton hardwood forest. If you have any questions, please call me at [phone], or
email at [e-mail].
Sincerely,
f re
. Furness
Senior Scientist
Enclosure
1530 NC Hwy 306 South, Aurora, NC USA 27805 T [phone]
PotashCorp. I www.potashcorp.com

Pc: Anthony Scarbraugh — DWR, Washington w/encl.
23-01-004-29
w/encl.
T.L. Baker
w/encl.
M. Brom
w/o encl.
R. Smith
w/o encl.
J. Pierce
w/o encl.
R. Jenner
w/encl.
T. Cvetan
w/encl.

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp - Aurora
Beaufort County, North Carolina
'Wt PotashCorp_
AURORA
Prepared For:
PotashCorp Aurora
1530 NC Highway 306 South
Aurora, North Carolina 27806
Prepared By:
Groundwater Management Associates, Inc.
4300 Sapphire Court
Suite 100
Greenville, North Carolina 27834
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.
GMA Project #43626
November 16, 2015

Table of Contents
1.0
Introduction............................................................................................i
2.0
Scone of Work.........................................................................................i
3.0
Local Geologic Setting............................................................................2
3.1 Importance of the Gumbo Clay Confining Laver...............................4
4.0
Site Investigation Plan...........................................................................5
5.0
Site Investigation Results.......................................................................6
5.1 Core Drilling and Geologic Mai Inng Data......................................6
5.2 Materials Testing Data..................................................................7
5.3 Hydraulic Conductivity Testing Data.............................................8
5.4 Pre -Mining Water-Levels...............................................................9
6.0
Report Certification..............................................................................11
7.0
List of References.................................................................................12
Figure 1. PotashCorp Site Facilities Map
Figure 2. Bonnerton Mining Corridor
Figure 3. Biotic Communities Map for Modified Alternative L, Bonnerton Tract
Figure 4 Expanded View of Mining Corridor and Non-Riverine Wet Hardwood Forest Areas
Figure 5. General Geologic Section - PCS Phosphate
Figure 6. Existing PotashCorp Boring Location Map - Bonnerton Tract
Figure 7. Project Boring and Monitoring Well Location Map
Figure S. Structure Contour Map of the Top of Farmers Clay Unit
Figure 9. Thickness Contour Map of the Farmers Clay Unit
Figure 10. Structure Contour Map of the Top of Post-Croatan Sand Unit
Figure 11. Thickness Contour Map of the Post-Croatan Sand Unit
Figure 12. Structure Contour Map of the Top of Gumbo Clay Unit
Figure 13. Thickness Contour Map of the Gumbo Clay Unit
Figure 14. Cross Section A - A' and B - B' Trace Location Map
Figure 15. Cross Section A - A'
Figure 16. Cross Section B - B'
Figure 17. Farmers Clay Unit Size Fraction Percentage Chart
Figure 18. Post-Croatan Sand Unit Size Fraction Percentage Chart
Figure 19. Gumbo Clay Unit Size Fraction Percentage Chart
Figure 20. Gumbo Clay Slug Testing Data Plot for E-3
Figure 21. Gumbo Clay Slug Testing Data Plot for W-3
Figure 22. Corridor Equipotential .Map, 07-28-2015
Page i

Auoendices
Appendix A. Geologic Coring Logs
Appendix B. Graphic Geologic Coring Logs
Appendix C. Photographic Records of Core Drilling and Well Drilling Activities (CD-ROM disk)
Appendix D. Terracon Materials Testing Data Reports
Appendix E. Piezometer Well and Slug Test Well Construction Diagrams
Appendix F. Slug Testing Monitoring Log Forms
Page 11

Site investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
1.0 Introduction
PotashCorp — Aurora (PCS) operates a phosphate mining operation near the town of Aurora
in Beaufort County, North Carolina. The mining operation has been active since 1965 and it
provides the raw material used for processing in the PCS Aurora chemical facilities. Fertilizers
are the primary product produced at the site. Mining of the phosphate ore is accomplished
by open pit mining methods.
PCS will soon begin relocating its mining operations from the current area of mining to the
Bonnerton tract (Figure 1). The North Carolina Department of Environmental Quality,
Division of Water Resources (NCDEQ-DWR) requires that a detailed stratigraphic study be
performed within, and on both sides, of a 1,145 -foot wide mining corridor at the Bonnerton
Tract (Figure 2).
The purpose of this permit requirement by the NCDEQ-DWR is to determine the presence,
extent, and permeability of any aquitards and aquicludes within the mining corridor. An
aquitard is a zone within the earth that restricts the flow of groundwater. A completely
impermeable aquitard is called an aquiclude. Aquicludes do not exist in the coastal plain of
North Carolina. Aquitards consist of layers of either clay or non -porous rock with low
hydraulic conductivity. For the purpose of this report, GMA will use the term confining layer
to refer to aquitards. The information in this report will be used to develop a plan for the
restoration of each of these confining layers, and this information shall be included with a re -
vegetation plan in order to ensure that pre -mining hydrology is re-established in the mining
corridor. A site investigation plan was provided to NCDEQ-DWR for written approval before
the stratigraphic study was initiated. PCS requested that Groundwater Management
Associates, Inc. (GMA) develop the site investigation plan to address the requirements of
NCDEQ-DWR. The site investigation plan was submitted to PCS representatives on March 24,
2015, and was approved by NCDEQ-DWR on July 6, 2015.
NCDEQ-DWR determined that the areas on either side of the mining corridor are a Non-
Riverine Wet Hardwood Forest (NRWHF) and must be avoided by the mining operations.
The NRWHF locations are designated as wetland hardwood forest (7) on the Biotic
Communities Map for the Modified Alternative L mine permit boundary at Bonnerton (Figure
3). Expanded views of the NRWHF areas and the mining corridor (study area) are shown on
Figure 4.
2.0 Scope of work
GMA's scope of work included the following major tasks;
• Review the local geology and stratigraphy of the study area.
• Conduct a core drilling program to map the local stratigraphy of the study area.
• Construct monitoring wells to establish the existing water -levels.
Page 1

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
• Obtain grain size analyses of representative sediments comprising the stratigraphic
units in the study area.
Determine the vertical and horizontal hydraulic conductivity (permeability) of any
aquitards within the study area.
3.0 Local Geologic Setting
The local geologic setting near the PCS site is well documented. The phosphate operations
rely on detailed geologic information for developing mine plans, determining metallurgical
characteristics, and estimating phosphate ore reserves. Exploratory core drilling to gather
geologic information for these purposes started in the early 1960s and continues to this day.
The PCS mine lies within the Coastal Plain Physiographic Province of North Carolina. The
Coastal Plain is a broad, relatively flat region comprising the eastern third of the State. Local
topography is very flat, with local relief of only about 20 feet between upland plateau areas
and tributaries. Maximum natural relief is approximately 40 feet (not considering mine
reclamation areas and mine -related spoil piles, such as the gypsum stacks).
The natural land surface largely owes its origin to a number of sea -level advances and
retreats that occurred throughout the Pleistocene Epoch (<1.8 million years ago). These
sea -level fluctuations created broad and generally flat terraces that slope gently to the east.
Streams and rivers have incised these terraces to create the current topographic character of
the area.
The Coastal Plain Province is underlain by marine, estuarine, and terrestrial sediments (up to
10,000 feet thick at Cape Hatteras) that were deposited over the past 200 million years. The
mine property is underlain by approximately 2,500 feet of Cretaceous to Recent -aged
sediments and sedimentary rocks that were deposited on top of pre -Mesozoic aged (>250
- million years) volcanic basement rocks (Lawrence and Hoffman, 1993).
Overlying the Cretaceous sediments is a sequence of Cenozoic -aged (<65 million years)
sediments of dominantly marine origin. These include significant beds of sand, shelly clay
and fossiliferous sandy limestone. The Cenozoic sediments have been hydrostratigraphically
subdivided into four aquifers locally, including (from deep to shallow): the Castle Hayne
Aquifer, the Pungo River Aquifer, the Yorktown Aquifer, and the Surficial Aquifer. These
aquifers contain fresh water in inland areas, and are important sources for local and regional
water supplies. Table 1 lists the principal local aquifers that occur beneath the PCS mine and
describes the characteristics of these aquifers.
Page 2

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
Table 1:
Local Aquifers near the PCS Mine
Aquifer
Formations and Ages
Character and Use
This aquifer occurs as a veneer (up to 70 feet
Surficial Sediments and
thick) of sandy to clayey sediments, locally
3
James City Formation
fossiliferous with shell hash. The aquifer
(Pleistocene to Recent)
covers the entire County, except in areas
0
L.
where deeply incised streams and rivers cut
�°,
_________________________________
into underlying units. Clays within the unit
tend to serve as confining layers and restrict
.0
recharge to underlying aquifers. The aquifer
tE
Yorktown Formation
is not currently used as a significant
U)(Pliocene)
groundwater source. It may be used
sporadically for irrigation and private
residential water supply.
This fine-grained unit is composed of
interbedded phosphatic clays, diatomaceous
Pungo River Formation
clays, phosphatic limestones, silty claystones,
L
w
(Miocene)
coquinas, calcareous clays, and phosphatic
O's
sands. It is not a major water -producing
C a
aquifer, but can supply usable quantities of
CL
water to some local wells. Phosphate from
this formation is obtained by open -pit mining
at the PCS Mine.
The Castle Hayne Formation is a sandy
E
Castle Hayne Formation
limestone and is characteristically highly .
c
(Eocene)
fossiliferous (molluscan mold to
bryozoan/echinoid skeletal). The aquifer
L
typically has a hard cap rock of well -indurated
R '412
limestone. The upper limestone unit has very
M Q
'a
high permeability. Middle to lower sections of
the unit may be less indurated and have
_________________________________________
higher sand_and- clay contents._____
The Castle Hayne Aquifer is the most extensively used aquifer in the area. The largest single
user of the Castle Hayne Aquifer is PCS, due to the need for depressurization of the aquifer
to allow for safe, dry mining conditions.
The local stratigraphy from land surface to the top of the Castle Hayne Aquifer is described
on the General Geologic. Section (Figure 5) (Gilmore, 2014).
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Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
The upper stratigraphy, from land surface to the principal confining layer, is the area of
primary interest for this stratigraphic investigation. The units that comprise the Surficial
Aquifer at the site consist of mottled orange, tan to light gray, muddy fine sands (Farmers
Clay unit) and blue -gray to dark gray, muddy fine sands, occasionally with small fossil mulinia
shells (Post-Croatan Sand unit). The Farmers Clay unit is a Holocene -age sediment and the
Post-Croatan Sand unit is a Pleistocene -age sediment.
Immediately below the Post-Croatan Sand unit is the primary confining unit for the Surficial
Aquifer, locally known as the Gumbo Clay unit (Pleistocene). The Gumbo Clay unit is blue -
gray to dark gray and black, organic -rich mud. This unit is typically very greasy to plastic in
nature and intermittently may contain sand and silt streaks along with sporadic fossil oyster
shells.
Below the Gumbo Clay unit is a layer of clean, fine to coarse, angular, quartz sand, locally
known as the Sugar Sand unit (Pleistocene).
Immediately below the Sugar Sand unit is the James City Formation, also known locally as
the Croatan Formation (Pleistocene). This unit is typically a coarse textured, blue-green to
gray, muddy shell hash and contains a variety of fossil shells and coral fragments. This shell
hash is known locally as the Shell Bed. PCS removes the upper overburden to the top of the
Shell Bed in order to establish a stable, well -drained surface for their mining equipment.
The James City Formation overlies the Yorktown Formation (Pliocene). The Yorktown
Formation overlies the Pungo River Formation (Miocene), and the Yorktown Formation
_ - comprises the majority of the overburden removed in, the mine. The Pungo River Formation
contains the phosphate ore that is mined at PCS. The two basal units of The Pungo River
Formation are not mined and unconformably overlie the Castle Hayne Limestone (Eocene) at
the mine. Formations below the Sugar Sand unit are extensive throughout the area, are well
defined and are not part of the site investigation plan.
3.1 Importance of the Gumbo Clay Confining Layer
Locally, the Gumbo Clay unit is the primary confining layer marking the base of the
unconfined Surficial Aquifer. Therefore, it is important to understand the extent and
properties of the Gumbo Clay unit in the proposed mining corridor.
The stratigraphy for the upper and lower horizons of the Gumbo Clay unit must be evaluated
in detail to determine the thickness of the Gumbo Clay unit. The Gumbo Clay unit is quite
variable in thickness, and its surface elevation relative to mean sea level (MSL) also varies.
Existing core samples collected within the Bonnerton tract indicate the approximate range in
thickness for the Gumbo Clay is 2 to 28 feet, with an average thickness averages 10.7 feet.
The upper surface elevation varies from -9 feet MSL to +19 feet MSL, and it averages +0.4
feet MSL.
Page 4

Site Investigation Report
Bonnertan Stratigraphy Study
PotoshCorp Aurora
November 16, 2015
The area for the stratigraphic investigation covered in the current study is the mining corridor
and the adjacent NRWHF areas (Figure 2). GMA reviewed the existing stratigraphic
information from previous core sample borings completed by PCS at the Bonnerton tract to
help determine where additional borings were needed to properly characterize the
stratigraphy at the site. The 10 additional borings drilled in 2015 are identified as E-1
through E-5 and W-1 through W-5 (Figure 6).
No pre -mining water -levels are available for the Surficial Aquifer in the study area.
Therefore, GMA assessed pre -mining Surficial Aquifer water -levels through the installation of
monitoring wells. Shallow piezometer wells were constructed at the 10 additional boring
sites to determine the pre -mining water -levels.
Grain size analyses of the Farmers Clay, Post-Croatan Sand, and Gumbo Clay layers were
completed to determine the grain size distribution of these units throughout the site. This
was necessary because no materials testing of these units had been performed previously
within the study area. In addition, vertical and horizontal hydraulic conductivity
(permeability) testing of the Gumbo Clay layer was needed at the site because no previous
permeability data existed for this unit within the study area.
4.0 Site Investiciation Plan
GMA reviewed aerial mapping data and geologic core drilling information provided by PCS for
the Bonnerton tract, and we determined that the site investigation plan should include the
following steps:
• Complete core sampling at 10 locations within the mining corridor to the base of the
Gumbo Clay unit (Figure 7).
• Complete a photographic record of all core samples taken within the mining corridor.
• Retain a representative number of core samples to perform grain size and
permeameter analyses of the stratigraphic units from the land surface to the base of
the Gumbo Clay unit.
• Determine the pre -mining water -levels in the Surficial Aquifer within the mining
corridor by constructing 10 piezometer wells (Figure 7).
• Determine the horizontal hydraulic conductivity of the Gumbo Clay unit within the
mining corridor by conducting instantaneous change in head tests (slug tests) at select
well locations.
• Prepare a site investigation report describing the methodology for achieving the
objectives of the permit conditions, including groundwater monitoring plans to support
future efforts of restoration of the pre -mining hydrology of the site.
Paue

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
Information for the site investigation report addresses the local stratigraphy,
hydrostratigraphy, materials testing data, vertical and horizontal permeability of
stratigraphic units, and the pre -mining water -levels in the Surficial Aquifer. The site
investigation report includes the following:
Geologic core drilling logs of the 10 core samples.
Photographic log of the 10 core samples.
Geologic cross-sections, isopach maps, and structure contour maps of the
stratigraphic units from land surface to the base of the Gumbo Clay unit.
Grain size analyses of the upper stratigraphic units.
Vertical and horizontal hydraulic conductivity testing results (slug tests and/or
-- permeameter tests) of the Gumbo Clay unit.
Pre -mining water levels obtained from the piezometer wells, and a potentiometric
surface map.
A post -mining groundwater monitoring plan for water -levels in Surficial Aquifer.
5.0 Site Investigation Results
5.1 Core Drilling and Geologic Mapping Data
Core drilling activities to determine the stratigraphy in the mining corridor was completed in
- July 2015. A pathway was cleared and drilling was completed using a Geoprobe 6620 DT
drill rig. The site preparation and clearing work removed a few inches of top soil at most of
the drilling sites. Geoprobe sampling is performed by advancing a coring tube, equipped with
a clear plastic core liner, through the subsurface by direct push/percussion methods. Core
sample diameter was 1.85 inches. Sample tubes were taken in five-foot intervals starting at
i the land surface. All core hole locations and elevations were surveyed by the PCS survey
crew. Geologic core logs are included in Appendix A, and graphic geologic logs are included
in Appendix B. Photographic records of the core drilling activities are included in Appendix C
on a CD-ROM disk.
The stratigraphy studied in the mining corridor included three distinct geologic units known
locally as: 1) Farmers Clay unit, 2) Post-Croatan Sand unit, and 3) Gumbo Clay unit. The
Farmers Clay unit is primarily a silty, clayey, fine sand, and it is consistently found in the
mining corridor. The top elevation of the Farmers Clay unit averages +14.8 MSL within the
mining corridor (Figure 8) and averages 7.4 feet in thickness within the mining corridor
f (Figure 9). The Farmers Clay Unit typically is mottled orange, tan, and gray, and it contains
roots and other organic debris (resulting from bioturbation). The Farmers Clay unit contains
interbedded thin fine sand and clay layers. Some near -surface clay layers in the Farmers
Clay unit can locally inhibit infiltration of surface water and may lead to ponding of surface
water. These thin clay layers are laterally discontinuous and have variable thickness.
Page 6

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
The Post-Croatan Sand unit is primarily a slightly shelly, silty, clayey, fine sand, and it is
consistently found across the mining corridor. The top elevation of the Post-Croatan Sand
unit averages +7.3 MSL within the mining corridor (Figure 10) and averages 9.2 feet in
thickness within the mining corridor (Figure 11). The Post-Croatan Sand is gray to blue -gray
in color and contains small percentages of abraded Mulinia (sp.) bivalve shell fossils.
The Gumbo Clay unit is primarily a sandy, silty, clay, and it is consistently found across the
mining corridor. The top elevation of the Gumbo Clay unit averages -1.9 MSL within the
mining corridor (Figure 12), and the unit averages 11.9 feet in thickness (Figure 13). The
Gumbo Clay unit is typically dark gray to blue -gray, and is very greasy and plastic in the area
of the mining corridor. The Gumbo Clay is the principle confining layer marking the base of
the Surficial Aquifer in the area of the mining corridor.
Beneath the Gumbo Clay unit is the Sugar Sand unit. The Sugar Sand unit consists of clean,
_ fine to coarse, angular quartz sand. Because the Sugar Sand lies beneath the confining
layer, it is not pertinent to the objectives of this study.
Two cross-sections of the stratigraphy of the mining corridor were completed (Figure 14).
Cross-section A — A' was completed for the west side of the mining corridor (Figure 15), and
cross-section B — B' was completed for the east side of the mining corridor (Figure 16).
5.2 Materials Testing Data
Terracon Labs in Greenville, North Carolina conducted materials testing of samples selected
by GMA from the 10 cores. The testing consisted of grain -size distribution analyses for each
of the stratigraphic units studied in the mining corridor. The materials testing results are
included in Appendix D. Size fraction percentages (by weight) were summarized and
graphed for each stratigraphic unit over the 10 boring locations. The sand size fraction
- shown on the graphs is the total of the coarse, medium and fine sand ranges since the fine
sand percentage is by far the predominant size portion. The materials testing results are
based on the Unified Soil Classification System (USCS).
The Farmers Clay unit grain -size fractions resulted in an average of 0.0% gravel sized
material, 55.6% sand sized material, 14.3% silt sized material, and 30.1% clay sized
material. The variation in size fractions for the Farmers Clay unit was graphed for all 10
borings (Figure 17).
The Post-Croatan Sand unit grain -size fractions resulted in an average of 1.2% gravel sized
material, 86.1% sand sized material, 4.6% silt sized material, and 8.1% clay sized material.
The variation in size fractions for the Post-Croatan Sand unit was graphed for all 10 borings
T (Figure 18).
Page 7

Site Investigation Report
Bonnerton Stratigraphy Study
PotoshCorp Aurora
November 16, 2015
The Gumbo Clay unit grain -size fractions resulted in an average of 0.0% gravel sized
material, 7.7% sand sized material, 30.5% silt sized material, and 61.9% clay sized material.
The variation in size fractions for the Gumbo Clay unit was graphed for all 10 borings (Figure
19).
The list of the American Society for Testing and Materials (ASTM) standards used by
Terracon Labs to analyze the soils is included at the end of Appendix D.
5.3 Hydraulic Conductivity Testing Data
To determine the vertical hydraulic conductivity of the Gumbo Clay, Terracon Labs conducted
permeability testing from representative samples on every other core sample. The results of
the Terracon vertical permeability testing results are included in Appendix D. The summary
of the vertical hydraulic conductivity testing results for the Gumbo Clay unit is provided in
Table 2.
Table Z; Summary of Gumbo Clay Vertical Hydraulic Conductivity Kv) Testing
Boring #
Vertical Hydraulic Conductivity
E-1
8.31 x 10-e cm/sec
2.36 x 10-4 ft/day
E-3
1.08 x 10-7 cm/sec
3.06 x 10-9 ft/day
E-5
2.56 x 10-' cm/sec
7.26 x 10-9 ft/day
W-1
1.29 x 10-' cm/sec
3.66 x 10-4 ft/day
W-3
6.74 x 10-8 cm/sec
1.91 x 10'4 ft/day
W-5
3.90 x 10-8 cm/sec
1.11 x 10-4 ft/day
A verage
1.14 x f 0 -7 em/seC
3.23 x 10 -4 ft/da y
To determine the horizontal hydraulic conductivity of the Gumbo Clay, slug testing was
performed on the two-inch diameter wells screened within the Gumbo Clay (E-3 and W-3).
Slug testing was performed on September 8-10, 2015 by lowering a solid metal "slug" (a 1
5/8 inch diameter by either 7 foot or 3 foot long solid metal cylinder) below the static water
level into each well.
The lowering of the slugs into the wells displaced a volume of water in the well equal to the
volume of the slug thereby increasing the water level in the well. The water levels were
allowed to drop back to their respective static water levels and equilibrate for an approximate
period of 24 hours. The slugs were then pulled from the wells inducing drawdown within the
wells, which is equivalent to removing a volume of water from the well equivalent to the
volume of the slug.
PaL,e 8

Site Investigation Report
Bonnerton Stratigraphy Study
PotoshCorp Aurora
November 16, 2015
Following removal of the slugs, recovering water levels were measured and recorded utilizing
a pressure transducer. The slug test monitoring log forms are included in Appendix E.
Analyses of the slug tests performed on wells E-3 and W-3 were conducted to derive
estimates of horizontal hydraulic conductivity of the Gumbo Clay. Slug test data analyses
were performed using the Hvorslev analysis method (Hvorslev, 1951) and the Bouwer-Rice
analysis method (Bouwer and Rice, 1976). A summary of the parameter estimates derived
from these two methods is provided in Table 3. Data plots for E-3 and W-3 are shown on
Figures 20 and 21.
Table 3: Summary of Gumbo Clay Horizontal Hydraulic Conductivity (Kh)
Estimates
5.4 Pre -Mining Water -Levels
GMA determined the water -level for the Surficial Aquifer in the mining corridor by measuring
water levels in 10 piezometer wells along the east and west sides of the mining corridor
(Figure 7).
During the core drilling exploration activities, 1 -inch PVC piezometer wells were constructed
at each of the 10 boring sites with screens placed in the Post-Croatan Sand unit. At the
conclusion of core drilling, the borehole was backfilled to the desired depth near the top of
the Gumbo Clay unit using bentonite pellets. A 5 -foot long, 1 -inch diameter, 0.02 -inch
slotted PVC well screen was connected to a 1 -inch diameter PVC well casing and lowered the
desired depth.
The well was then gravel packed with Southern Products #2 filter gravel from the screen
depth to approximately 1 -foot below land surface. Bentonite pellets were added from 1 -foot
below land surface to surface level. The well casings extended at various heights above land
surface and were sealed with a rubber well cap and lockable hasp.
Page 9
Well
Analysis Method
Slug Test Well E-3
Slug Test Well W-3
Hvorslev Analysis
2.32 x 10-s cm/sec
1.75 x 10-5 cm/sec
(6.58 x 10 ft/day)
(4.96 x 10 ft/day)
Bouwer-Rice Analysis
1.69 x 10-5 cm/sec
1.31 x 10-5 cm/sec
(4.79 x 10' ft/day)
(3.71 x 10 ft/day)
Average
2.01 x 10 -2 cm/sec
1.53 x 10 -Z cm/sec
(5.70 x 10- ft/day)
(4.34 x 10- ft/day)
5.4 Pre -Mining Water -Levels
GMA determined the water -level for the Surficial Aquifer in the mining corridor by measuring
water levels in 10 piezometer wells along the east and west sides of the mining corridor
(Figure 7).
During the core drilling exploration activities, 1 -inch PVC piezometer wells were constructed
at each of the 10 boring sites with screens placed in the Post-Croatan Sand unit. At the
conclusion of core drilling, the borehole was backfilled to the desired depth near the top of
the Gumbo Clay unit using bentonite pellets. A 5 -foot long, 1 -inch diameter, 0.02 -inch
slotted PVC well screen was connected to a 1 -inch diameter PVC well casing and lowered the
desired depth.
The well was then gravel packed with Southern Products #2 filter gravel from the screen
depth to approximately 1 -foot below land surface. Bentonite pellets were added from 1 -foot
below land surface to surface level. The well casings extended at various heights above land
surface and were sealed with a rubber well cap and lockable hasp.
Page 9

Site Investigation Report
Bonn erton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
On July 28, 2015, GMA measured the static water -levels in the 10 piezometer wells in order
to obtain pre -mining water -levels in the mining corridor. Water -levels were measured with
an electronic water -level indicator. Using these data, GMA prepared a pre -mitring
equipotential map of the Surficial Aquifer for the mining corridor (Figure 22). The horizontal
component of groundwater flow was directed generally toward the northeast under a
hydraulic gradient ranging from 1.1 x 10-$ feet per foot (feet/foot) to 8.3 x 10-3 feet/foot,
On September 1 and 2, 2015, 2 slug test wells were constructed in the Gumbo Clay unit near
borings E-3 and W-3 on each side of the mining corridor. Slug test wells E-3 and W-3 were
constructed using 2 -inch diameter, 0.02 -inch slotted PVC well screen was connected to a 2 -
inch diameter PVC well casing and lowered near the bottom of the Gumbo Clay unit. An 8 -
foot well screen was used at E-3 and a 10 -foot well screen was used at W-3. The well was
then gravel packed with Southern Products #2 filter gravel from the screen depth to
approximately 1 to 2 feet below the top of the Gumbo Clay unit. Bentonite pellets were
added from the top of the #2 filter gravel to the surface level. The well casings extended at
approximately 1 to 2 feet above land surface and were sealed with a PVC well cap.
On September 8, 2015, GMA measured the static water -levels in the 2 slug test wells in order
to obtain pre -mining water -levels in the Gumbo Clay confining unit.
A summary of the water -levels measured by GMA in the piezometer wells and slug test wells
are included in Table 4.
Table 3: Summaryof Pre-Minin Water -Levels
Well #
Date of
Measurement
Elevation Top
of Casing
MSL
Depth to
Water Level
ft.
Static Water
Level (MSL)
Piezometer E-1
7-28-2015
19.51
7.35
12.16
Piezometer E-2
7-28-2015
15.93
3.26
12.67
Piezometer E-3
7-28-2015
16.48
3.55
12.93
Piezometer E-4
7-28-2015
15.63
3.25
12.38
Piezometer E-5
7-28-2015
14.49
5.71
8.78
Piezometer W-1
7-28-2015
18.44
4.65
13.79
Piezometer W-2
7-28-2015
17.83
3.76
14.07
Piezometer W-3
7-28-2015
16.42
3.44
12.98
Piezometer W-4
7-28-2015
17.55
4.39
13.16
Piezometer W-5
7-28-2015
15.95
3.35
12.60
Sluo Test E-3
9-8-2015
16.36
12.41
3.95
Slug Test W-3
9-8-2015
16.57
6.05
10.52
Page 10

Site Investigation Report
Bonnerton Stratigraphy Study
PotoshCorp Aurora
November 16, 2015
All core drilling and well construction activities were conducted by a North Carolina Certified
Well Contractor using the Geoprobe 6620 DT drill rig. All monitoring well locations and top of
casing elevations were surveyed by the PCS survey crew. Well construction diagrams for the
10 piezometer wells and 2 slug test wells are located in Appendix E. Photographic records of
the completed monitoring wells are included in Appendix C on a CD-ROM disk.
6.0 Report Certification
This site investigation report for the Bonnerton Stratigraphy Study was prepared by a
Professional Geologist familiar with the local geology of the PCS mine site and the Bonnerton
tract. Groundwater Management Associates, Inc., is a professional corporation licensed to
practice geology (C-121) and engineering (C-0854) in North Carolina.
"Tex" Ivan K. Gilmore, P.G., C.P.G.
Project Manager
Senior Mining Geologist
V -S
Kyle B. Quick, P.G.
Project Hydrogeologist
Y
Richard K. Spruill, Ph.D., P.G.
Principal Hydrogeologist
.caRp u�E �AofFBsi
SEAL 060.'10
AIPG
181
' Nk " td1C�'',. Aefessiaw�t
Page 11

Site Investigation Report
Bonnerton Stratigraphy Study
PotashCorp Aurora
November 16, 2015
7.0 List of References
Lawrence, D. P., and C. W. Hoffmann, 1993, "Geology of basement rocks beneath the North
Carolina Coastal Plain", North Carolina Geological Survey, Bulletin 95, 60p, one Plate.
Gilmore, I. K., 2014, reference page 6, General Geologic Section from 1983, "Invertebrates
and Plants", North Carolina Fossil Club, Volume 1, 295p.
Hvorslev, M.J., 1951, Time Lag and Soil Permeability in Groundwater Observations., U.S.
Army Corps of Engineers Waterway Experimentation Station, Bulletin 36.
Bouwer, H., & R.C. Rice, 1976, A Slug Test for Determining Hydraulic Conductivity of
Unconfined Aquifers with Completely or Partially Penetrating Wells, Water Resources
Research 12:423-28.
Page 12

Figures

AL

1
18 18 22 tc
--
Is 22
B 2 a 2' 7
9
5 21 18
B 9
16 B
18 46
7
5 5
B
6
22 16 9
8
16 9 8 22
17 1e 8 \
9
T 3 9
6 � s
e 9
7
8
B
7 7 8 g
22 7
B
21 6
T 22 $
9 7 1B 7
t
6 7 7 73
P-0-0i'mili
15 5 8
7 7 6
B
a a
17
11
8
18
22
21
19
22
5
NONRIVERINE WET HARDWOOD FOREST (NRWHF) ACRES
20
Tjg/20 b 16
17
BONNERTON BASE PROJECT AREA 2,806
(((JJJ 1s 22
B
IB 8
9 0 ig 20 6
MODIFIED ALT L — BONNERTON PROPOSED 2,526
18
9 8 16
IMPACT BOUNDARY 5/13/09
B 7
11 a 1
a
MODIFIED ALT L— BONNERTON PROPOSED 1,698
1a
9
IMPACT BOUNDARY 5/13/09 — EXCAVATION
91 0
1 7
LIMITS RECOVERABLE CONCENTRATE = 33,478,000 TONS*
5
21
19 11
g
0 1
8 1
5
4
18 g
15
14
s 1
CREEKS/OPEN WATER
8 B
19 B
8
20
0
5
16 PERENNIAL STREAM
7 tl
9
22
6
10 18
9
WETLAND BRACKISH MARSH COMPLEX
15
5 5 18
3
WETLAND BOTTOMLAND HARDWOOD FOREST
5
15
22 4
WETLAND HERBACEOUS ASSEMBLAGE
5
17 7 17
3 I'� j
5
WETLAND SHRUB --SCRUB ASSEMBLAGE
T
14
5 1
6
WETLAND PINE PLANTATION
9
7
WETLAND HARDWOOD FOREST
6UTRHAM 15 3
5
8
WETLAND MIXED PINE — HARDWOOD FOREST
w�REEic 3
15 I
9
7
g t 5
5
10
WETLAND POCOSIN — BAY FOREST
3t5
6
a1
P-0-0i'mili
15 5 8
7 7 6
a a
11
7 9 14
8
9 18
LEGEND
22
8 6
NONRIVERINE WET HARDWOOD FOREST (NRWHF) ACRES
20
Tjg/20 b 16
17
BONNERTON BASE PROJECT AREA 2,806
(((JJJ 1s 22
IB 8
9 0 ig 20 6
MODIFIED ALT L — BONNERTON PROPOSED 2,526
18
9 8 16
IMPACT BOUNDARY 5/13/09
B 7
11 a 1
a
MODIFIED ALT L— BONNERTON PROPOSED 1,698
1a
B 77
IMPACT BOUNDARY 5/13/09 — EXCAVATION
91 0
1 7
LIMITS RECOVERABLE CONCENTRATE = 33,478,000 TONS*
B 11
19 11
g
0 1
8 1
5
4
18 g
9 9 10
14
s 1
CREEKS/OPEN WATER
8 B
19 B
1A PUBLIC TRUST AREAS
20
0
5
16 PERENNIAL STREAM
7 tl
9
1C INTERMITTENT STREAM
6
10 18
2
WETLAND BRACKISH MARSH COMPLEX
15
5 5 18
3
WETLAND BOTTOMLAND HARDWOOD FOREST
5
15
22 4
WETLAND HERBACEOUS ASSEMBLAGE
5
17 7 17
3 I'� j
5
WETLAND SHRUB --SCRUB ASSEMBLAGE
T
14
5 1
6
WETLAND PINE PLANTATION
22
1s
7
WETLAND HARDWOOD FOREST
6UTRHAM 15 3
5
8
WETLAND MIXED PINE — HARDWOOD FOREST
w�REEic 3
15 I
9
WETLAND PINE FOREST
g t 5
5
10
WETLAND POCOSIN — BAY FOREST
3t5
6
a1
11
WETLAND SAND RIDGE FOREST
4 31C
4
12
POND
15
14 0 10
13
WETLAND MAINTAINED AREA
22 5 5 t5
7s 5 11
14
15
UPLAND HERBACEOUS ASSEMBLAGE
UPLAND SHRUB — SCRUB ASSEMBLAGE
6 t 5 5
16
UPLAND PINE PLANTATION
4 3
11
17
UPLAND HARDWOOD FOREST
3 5 1c
10 1B
18
UPLAND MIXED PINE — HARDWOOD FOREST
19
UPLAND PINE FOREST
a
1B
20
UPLAND SAND RIDGE FOREST
5 15 10
14
21
UPLAND AGRICULTURAL LAND
15
10 7
22
UPLAND NON — VEGETATED/MAINTAINED AREA
zo
10 7
3 5 11 1 14
2 2
1a I1 t8
'0 7 22
11
20 4 7
2
2 18 9 7 18
18
1 1B
*PROVIDED BY
PCS PHOSPHATE 5/13/09
NOTE: BOUNDARY AS SHOWN INCLUDES DCM/CAMA AVOIDANCE
11800 0
1,800 Feet
Basemap Provided By.
Gl"
Potash Corp— Aurora
1530 Hwy. 306 South
Aurora, NC 27806
Gro&4.aW uana9an nt A..ofdote% Inc.
File: 436-26.dwg
BIOTIC COMMUNITIES MAP FOR
MODIFIED ALTERNATIVE L, BONNERTON TRACT
Date: 3/4/15
Project No. 436-26
PCS PHOSPHATE CO., INC.
AURORA, NC
Figure: 3

21
9
18
22
7
15
15
8 7
17
6
21
6
16
7
22
8 18
6
14
9 7 18
7
3
g
g 1C 7 1C
6
7 8
8 18 17 17
8
fi 7 9
7 7
17 8
9
9
18
5 3
8
8
9
2
4
8
9
8
16
8
�
7
15
1 17
1B
19
18
5
3 7
3
15
3
8
7 15
17
8
22 22
8
17
8
18 22
21 19
5 8
18
9
5
21
15
22 8 9
15
9
9
E EGENI�
_
NONRIVERINE WET HARDWOOD FOREST (NRWHF)
ACRES
BONNERTON BASE PROJECT AREA
2,806
MODIFIED ALT L - BONNERTON PROPOSED
2,526
IMPACT BOUNDARY 5/13/09
MODIFIED ALT L - BONNERTON PROPOSED
1,698
IMPACT BOUNDARY 5/13/09 - EXCAVATION
LIMITS RECOVERABLE CONCENTRATE = 33,478,000 TONS*
1
CREEKS/OPEN WATER
1A PUBLIC TRUST AREAS
1B PERENNIAL STREAM
1C INTERMITTENT STREAM
2
WETLAND BRACKISH MARSH COMPLEX
3
WETLAND BOTTOMLAND HARDWOOD FOREST
4
WETLAND HERBACEOUS ASSEMBLAGE
5
WETLAND SHRUB - SCRUB ASSEMBLAGE
6
WETLAND PINE PLANTATION
7
WETLAND HARDWOOD FOREST
8
WETLAND MIXED PINE - HARDWOOD FOREST
9
WETLAND PINE FOREST
10
WETLAND POCOSIN - BAY FOREST
11
WETLAND SAND RIDGE FOREST
12
POND
13
WETLAND MAINTAINED AREA
14
UPLAND HERBACEOUS ASSEMBLAGE
15
UPLAND SHRUB - SCRUB ASSEMBLAGE
16
UPLAND PINE PLANTATION
17
UPLAND HARDWOOD FOREST
18
UPLAND MIXED PINE - HARDWOOD FOREST
19
UPLAND PINE FOREST
20
UPLAND SAND RIDGE FOREST
21
UPLAND AGRICULTURAL LAND
22
UPLAND NON - VEGETATED/MAINTAINED AREA
*PROVIDED 9Y
PCS PHOSPHATE 5/13/09
NOTE: BOUNDARY AS SHOWN INCLUDES DCM/CAMA AVOIDANCE
900 0
900 Feet
Basemap Provided By.
PotashCorp—Aurora
GMA
1530 Hwy. 306 South
Aurora, NC 27806
Groundwater Mana"nent AesocW&& Inc
File: 436-26.dwg
BIOTIC COMMUNITIES MAP
FOR MODIFIED ALTERNATIVE L, BONNERTON TRACT
Date: 3/4/15
Project No. 436-261
PCS PHOSPHATE CO.,
INC.
AURORA, NC
Figure:4

lot i Le kL
1. Farmer's clay - Sand, sllt and organic debris in a clayey matrix. Tan, gray to
black in color, usually with limonitic streaks. 5ometlme5 occuro a5 a black organic
- rich peaty clay and mud.
2. Surface 5and5 - Fine grained sand to silt being organic and slightly clayey.
Variegated tan to gray in color: Sometimes occurs a5 variable clean quartz Band
with clay lenses. Some heavy minerals present. Occurs fiat to cross -bedded with CM
Z limonitic lncrustation5. Toward base of unit color darkens and Sand size is greater
"lce
...
F... 5ometime5 containing pebbles and striated igneous rocks from Rafts". Q„ .
-_-_ 3. Post-Croatan Sandys - Blue gray silty to Sandy mild and day with abundant GC.
(Mulirrea) pelecypod and gastropod sheff7. Thi-, unit contains mica and heavy
,'. minerals. Also, in the matrix are various types of organic matter. Many of the
fossils found in this unit are in "life position". irz
__j
f11 4. Gumbo Clay - 13lue gray to dark brown or black sandy to pure clay. Top of this unit
`
contains much sand and silt with layer-, of peat, Sand and organics such as rooto and
wood fragments. Center of unit is very impervious, greasy pure clay. Base of unit
sometimes contains abundance of organic debris and sand streaks. Sage may be black
or brown in color and occasionally become$ a "coon" oyster bioherm.
5. Sugar 5and5 - 1borly sorted, white to gray, fine to very coarse, angular to
sub-rounded quartz Sand. Sand i5 5omet€me5 translucent, Barely contains
a organics. Heavy minerals and mica do occur. High angle croso-bedding is evident
sedimentary structure. Base of unit becomes very coarse quartz Sand and gravel.
50metimeg containing gray day len5eo throughout unit. Occaolonally this unit
may overlie or be completely replaced by Croatan clay, which is a 5heily dense clay.
6. 5he11 Sed -- 3lue green clayey witty Shell hash to Shelly sand, Abundant glaucorite sand and
_
? i silt throughout. Very foi�i5ilifemus uni , containing wide variety of pelecypod5, gastropods, and
caelenteratey. �iharp unconformable, undulatory contacts are found both above and below this
unit. Channels in the upper surface are filled by rand from the overiying unit. Also, this unit
"scour"
- L may grade into a finer Shell hash with coarse sand and pebbles as it may out underlying
Yorktown clay sornetimce quite deeply in old drainage patterns. Gaye of unit :wxrPtimes
include* hard limonitic concretions of glauconitir, sand cemented by CaCo,, known as "Boulder
Brd . Drainage from base of unit "weeps" at contact with underlying clay forming dlotictive iron
oxide stained otreake or exposure of clean face,
...
Z W_ 7, Yorktown Clay - Light gray silty to sandy, Semi-indurated cast and moldic t�
e
Q *4 TurrYtella clay. May be a manly sand at tims
LLJ
C-3
- 8. Light green-gray silty Stiff marly clay with minor Shelly 5treak5 and occasional
C= cast and moldic Turrltella streaks.
9. Green-gray semi-indurated marly clay with occasional bone fragments, lignite
and mushy shell fragments.
10. Green-gw�ty stiff silty manly clay with occasional quartz sand streaks. Also contains
abundant echlnoid spines. Base of unit 5omeume5 corrtain5 large black phosphatic pebbles.
11. Light gray Sandy Stiff marly clay with abundant pecten -,hefty, reworked
- phosphate pebbles, phosphatic bones, and teeth.
" 12. Dark green phosphatic sandy clay. Composed mostly of reworked materials
including pebbles and fossils that have been pho5phatized. 5ometirnes containing
chalky, mushy, shell fragments and abundant auartz pebbles and sand streaks. At
base of unit an abundance of large phosphatic pebbles.
f'
13. Chartreuse lied - Yellowish green sandy bryozoan hash. Contains only sparse
fine grained phosphatic black sand.
'
14. Coquina Beds - lnterbedded soft to indurated many gray clay and white roquinoid 'i
' limestone with rich black clayey phosphatic Sand. This unit contains abundant variety of
fossils and black v uggy - phosphatic pebbles known as micro5phorite.
_ 15. Phosphate Ore Matix - Plock to olive green clayey fine grained phagphatsc Sand
with minor fossil remains.
*= 16. Light green gem!-indurated phosphatic clay. Slightly caicareou5 with some
dolo silt and quartz sand streaks. Also with minor pebbles and fossil remains.
17. Olive seen to black clayey fine rained hv5 hatic Sand with minor °ossil remains.
fug. g ayes g P p
acyl
18, Dolootone Unit - Indurated gray to light green doiootone. Forms a5 lenticular
t�C deposits in ore body. Phosphate pebbles and clam borings are present. Unit may
C-A
p contain very hard fight green 5111ceou6 streaks.
i9. Olive green very clayey phosphatic Sand. Clay content incre oeso with depth. v
Abundant coarse pho5phatic p6bbe5 and fo56115 found at base. 5ase of ore matrix,
20. Caprock - Hard light green fine grained dolomitic sandstone. Contafns
abundant quartz and phr,-,phattc pebbles and cast and molds of pelecypodia Some
calcite also present,
21. Lean Ore - Olive green fossiliferous slightly phosphatic clay. Very abundant
r
phosphate pebbles and fossll remains. Also in matrix are large quartz pebbles.
Sparse dolomitic and phosphatic sand present. At base of unit exists an
errosional surface which is dense black phosphate replacing vuggy limestone. ,
22. White to tan ca-,t and moldic coquinofd limestone. Artesian aquifer. Top of
F
unit contains loose quartz sand in lattice gradino, to vuggy limestone, loosely
cemented to hard, with beds of various coarse to fine textured coquina. 130ttom of
section becomes a glauconitic s€ity, shelty clay. Average thickness ie ± 250'.
GMA
Q*undoater Managemwt tm loc.
File: 436-26.dwg
GENERAL GEOLOGIC SECTION
Date: 3/4/15
Project No. 436-26
PCS PHOSPHATE CO., INC. AURORA, NC
Figure: 5

A
I

_�
1
Shows elevation of top of the
Farmers Clay Unit or Holocene
Sands. Contour interval is 1 foot.
Datum is mean sea level.
PROJECT: 43626
STRUCTURE CONTOUR MAP
OF THE TOP OF THE
FARMERS CLAY UNIT
FIGURE 8 DATE 10/5/2015
SCALE IN FEET
0 500 1000'
` POTASHCORP-AURORA
BEAUFORT COUNTY, NC
23-97
GMA
N �
GROUNDWATER MANAGEMENT ASSOCIATES, INC.
- LEGEND -
BONNERTON 7-1 MINE
PERMIT MODIFICATION
BONNERTON 404 PERMIT
BOUNDARY
CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
Q EXISTING BORINGS
Q 2015 BORINGS
Shows elevation of top of the
Farmers Clay Unit or Holocene
Sands. Contour interval is 1 foot.
Datum is mean sea level.
PROJECT: 43626
STRUCTURE CONTOUR MAP
OF THE TOP OF THE
FARMERS CLAY UNIT
FIGURE 8 DATE 10/5/2015
SCALE IN FEET
0 500 1000'
` POTASHCORP-AURORA
BEAUFORT COUNTY, NC
23-97
GMA
N �
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

a.
10-03 Shows thickness, in feet, of the
W-3 E-3 Farmers Clay Unit or Holocene
Sands. Contour interval is 1 foot.
PROJECT: 43626
E-
W -2 THICKNESS CONTOUR
.MAP OF THE FARMERS
CLAY UNIT
FIGURE 9 DATE 1 015/2015
12.03 SCALE IN FEET
0 500 1000'
POTASHCORP-AURORA
BEAUFORT COUNTY, NC
l 23-9GMA7
1 a,
4 GROUNDWATER MANAGEMENT ASSOCIATES, INC.
- LEGEND -
BONNERTON 7-1 MINE
PERMIT MODIFICATION
BONNERTON 404 PERMIT
BOUNDARY
0
CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
Q
EXISTING BORINGS
Q
2015 BORINGS
10-03 Shows thickness, in feet, of the
W-3 E-3 Farmers Clay Unit or Holocene
Sands. Contour interval is 1 foot.
PROJECT: 43626
E-
W -2 THICKNESS CONTOUR
.MAP OF THE FARMERS
CLAY UNIT
FIGURE 9 DATE 1 015/2015
12.03 SCALE IN FEET
0 500 1000'
POTASHCORP-AURORA
BEAUFORT COUNTY, NC
l 23-9GMA7
1 a,
4 GROUNDWATER MANAGEMENT ASSOCIATES, INC.

N
y
- LEGEND -
BONNERTON 7-1 MINE
PERMIT MODIFICATION
. . .. ...
BONNERTON 404 PERMIT
_
"
BOUNDARY
CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
Q EXISTING BORINGS
0 2015 BORINGS
Shows elevation of top of the
Past-Croatan Sand Unit.
Contour interval is 1 foot.
Datum is mean sea level.
PROJECT. 43626
STRUCTURE CONTOUR MAP
OF THE TOP OF THE
POST-CROATAN SAND UNIT
Y-
FIGURE 10 DATE 10/5/2015
SCALE IN FEET
0 500 1000'
POTASH CORP -AU RORA
BEAUFORT COUNTY, NC
23.97
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

ffI
1 f1
N
Shows elevation of top of the
Gumbo Clay Unit.
Contour interval is 1 foot.
Datum is mean sea level.
PROJECT: 43626
STRUCTURE CONTOUR MAP
OF THE TOP OF THE
i GUMBO CLAY UNIT
FIGURE 12 DATE 10/5/2015
SCALE IN FEET
0 500 1000'
CIO
�► POTASHCORP-AURORA
R - BEAUFORT COUNTY, NC
23-97
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.
- LEGEND -
BONNERTON 7-1 MINE
.. . _
L -J
PERMIT MODIFICATION
y,
BONNERTON 404 PERMIT
BOUNDARY
CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
_ zv
O
EXISTING BORINGS
Q
2015 BORINGS
Shows elevation of top of the
Gumbo Clay Unit.
Contour interval is 1 foot.
Datum is mean sea level.
PROJECT: 43626
STRUCTURE CONTOUR MAP
OF THE TOP OF THE
i GUMBO CLAY UNIT
FIGURE 12 DATE 10/5/2015
SCALE IN FEET
0 500 1000'
CIO
�► POTASHCORP-AURORA
R - BEAUFORT COUNTY, NC
23-97
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

,'yam' ` . �.; 11
I M
- LEGEND -
BONNERTON 7-1 MINE
PERMIT MODIFICATION
BONNERTON 404 PERMIT
BOUNDARY
CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
EXISTING BORINGS
2015 BORINGS
Shows thickness, in feet, of the
Gumbo Clay Unit.
Contour interval is 1 foot.
THICKNESS CONTOUR
1 r MAP OF THE GUMBO
k CLAY UNIT
FIGURE 13 DATE 10/5/2015
1q SCALE IN FEET
0 500 1000'
�- POTASHCORP-AURORA
BEAUFORT COUNTY, NC
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

-LEGEND-
BONNERTON 7-1 MINE
l ] PERMIT MODIFICATION
BONNERTON 404 PERMIT
BOUNDARY
0 CURRENT MINE PERMIT 7-1
PERMIT BOUNDARY
2015 CORE SAMPLE AND
0 MONITORING WELL LOCATION
PROJECT: 43626
CROSS SECTION TRACE
A -A' AND B -B'
FIGURE 14 1 DATE 8/18/15
SCALE IN FEET
p 1000 2000
POTASHCORP-AURORA
BEAUFORT COUNTY, NC
,1
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

'y H
+20
FT. 0
MSL
-10
-5
-15
-20
GUMBO
- - - CLAY UNIT
SUGAR SAND
UNIT
(TOP ONLY)
-LEGEND -
SAND CLAY
MUD SHELL
PROJECT: 43626
CROSS SECTION A -A'
FIGURE 15 JDATE 8/18/15
SCALE IN FEET
0 400 g00
POTASHCORP- AURORA
BEAUFORT COUNTY, INC
G A
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

+20
+15
+10
+5
FT. 0
MSL
-5
-20
B'
E-1
E-2
E-3
E-4
_
+13.61 MSL
+14.02
MSL
+14.06
MSL
+13.55 MSL
+ 3.70 MSL
GEOLOGIC UNIT
FARMERS
CLAY UNIT
POST—CROATAN
SAND UNIT
GUMBO
CLAY UNIT
—LEGEND—
SAND CLAY
MUD SHELL
PROJECT: 43626
CROSS SECTION B—B'
FIGURE 16 1 DATE 8/18/15
SCALE 4N FEET
SUGAR SAND o aoo soo
UNIT
(TOP ONLY) POTASHCORP—AURORA
BEAUFORT COUNTY, NC
GMA
GROUNDWATER MANAGEMENT ASSOCIATES, INC.

80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
GMA
Bonnerton Stratigraphy Study - Size Fraction Percentage
Farmers Clay Unit
E-1 E-2 E-3 E-4
E-5
W-1
W-2 W-3
■% Gravel
—% Sand
% Silt
%Clay
Figure 17
W-4 W-5

GMA
100.0
90.0
80.0
70.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
Bonnerton Stratigraphy Study - Size Fraction Percentage
Post-Croatan Sand Unit
Figure 18
E-1 E-2 E-3 E-4 E-5 W-1 W-2 W-3 W-4 W-5
- % Gravel ----% Sand ---% Silt Q/o Clay

GMA
7'0.0
60.0
50.0
40.0
30.0
20.0
10.0
0.0
Bonnerton Stratigraphy Study - Size Fraction Percentage
Gumbo Clay Unit
Figure 19
E-1 E-2 E-3 E-4 E -S W-1 W-2 W-3 W-4 W-5
–_ - _% Gravel —% Sand —% Silt % Clay

0.1
10.
0.1
Figure 20 - PCS Aurora, Bonnerton Stratigraphy Study
E-3 Gumbo Clay Slug Testing Data Plots
Obs. Wells
Aquifer Model
Confined
Solution
HVorslev
Parameters
K - 2.322E-5 cm/sec
y4. 1.009 ft
100. 200. 300. 400. 500.
Time (min)
Hvorslev Analysis of Gumbo Clay Observation Well E-3 Slug Test Data
Obs. Wells
E-3
Aquifer Model
Confined
solutio,
Bouwer-Rice
Parameters
K - 1.888E-5 cm/sec
y0 - 2,623 ft
0.01 `1 1 1 1 1 1 1 1 11 i..,,,..
0. 100, 200. 300. 400. W.
Time (min)
Bouwer-Rice Analysis of Gumbo Clay Observation Well E-3 Slug Test Data

Figure 21 - PCS Aurora, Bonnerton Stratigraphy Study
W-3 Gumbo Clay Slug Testing Data Plots
Obs. Wells
W-3
Aquifer Model
Confined
Solution
Hvorslev
Parameters
K = 1.748E-5 cm/sec
y0 = 0.9855 ft
0.01 1 F 1 1 l 1 1 1 1 F l 1 l 1 l l 1 1 1 1 1 1
1 1 1 1
0. 100. 200. 300. 400. 500.
Time (min)
Hvorslev Analysis of Gumbo Clay Observation Well W-3 Slug Test Data
10.
0.1 L
0.
100. 200, 300. 400. 500.
Time (min)
Obs. Wells
W-3
Aquifer Model
ConAned
Solution
Bouwer-Rice
Parameters
K ■ 1.309E-5 cm/sec
y0 = 3.864 ft
Bouwer-Rice Analysis of Gumbo Clay Observation Well W-3 Slug Test Data

Rdee:1Jiel
O CORRIDOR BORINGS GMA
BONNERTON 7-1 MINE PERMIT MODIFICATION SCALE IN FEET
a 400
BONNERTON 404 PERMIT BOUNDARY
File: DRAWINGS/436261 SURFICIAL AQUIFER EQUIPOTENTIAL MAP, 7/28/2015 Date: 10/16/2015
EQUIP 2015 7 28
Project No. 43626 POTASH CORP. -AURORA, BEAUFORT CO., NC Figure 22

Appendix A
Geologic Coring Logs

Groundwater Management Associates - Geologic Coring Lo
GMA Client: PotashCorp - Aurora GMA Project Number: 43626
Rig: Geoprobe 6620 DT (Trader)
Started Completed
Date: 07/24/15 Date
Time: 11:00 AM Time:
Geologist: Tex Gilmore - GMA Driller:
Hole No.- E-1
Sheet 1 of 1
07/24/15 Location: E 2.640,989
+ 13.61 MSL (land surface)
12:45 PM Elevation: + 19.51 MSL (toe of casing)
John Switzer - Trader Geophysical Log: No
Depth I
%
Recovery
Sample
To Lab
Material and Remarks
From
To
00
5.0
100
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. View thru tube shows 0-0.Slayer of brown topsoil present.
5.0
7.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand.
75
100
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand
Mulinea shells present are white and scattered (<10%).
10.0
150
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand
fine to medium sand. Mulinea shells present are white and scattered <10%)
150
170
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy. shelly fine sand
Mulinea shells present are white and scattered (<10%).
170
200
100
Yes
Tube 4
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Post-Croatan Sand unit
200
250
100
Yes
Tube 5
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud.
250
288
100
Yes
Tube 6
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud.
Gradational contact with Sugar Sand Unit below. becoming sandy last 0 3'.
28.8
30.0
100
Yes
Tube 6
Sugar Sand Unit - Gray, slightly muddy, fine to medium quartz sand.
Gumbo Clay Thickness = 11.8'
Gumbo Clay: Top Elevation = -3 39 MSL, Bottom Elevation = -15.19 MSL
E-1 Monitoring Well Data: 15' dee . 1" diameter casing/screen.
#10 slot screen from 10.15', #2 gravel from 1-15', bentonite pellets from 0-1'
and from 15-30'.
Total Depth Drilled = 30'
Static Water Level on 7.28-15 = 7.35' DTW from TOC, +12.16 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Groundwater Management Associates - Geologic Coring Log
GMA Client: PotashCorp - Aurora GMA Project Number: 43626
Rig: Geo robe 6620 DT Trader
Started Completed
Date 07/22/15 Date:
Time: 3:30 PM Time:
Geologist: Tex Gilmore - GMA
07/22/15
4:35 PM
Driller: John Switzer - Trader
Hole No..
E-2
Sheet
1 of 1
From
N 588,844
Location:
E 2,640,769
60
+ 14.02 MSL (land surface)
Elevation:
+ 15.93 MSL (top of casing)
Geophysical Log No
Depth (ft-
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.0
60
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange. slightly clayey, fine to
medium sand. Lost to 2', root mat and loose topsoil/Farmers Clay unit
50
7.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Visual contact viewed thru tube at 7.5'.
7.5
100
10D
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy. shelly fine to medium sand
Mulinea shells present are white and scattered (<10%).
10.0
150
100
Yes
Tube 3
Post-Crcatan Sand Unit - Blue -gray, muddy, shelly fine to medium sand
Mulinea shells present are white and scattered (<10%).
15.0
18.0
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray. muddy, shelly fine sand.
fine to medium sand. Mulinea shells present are white and scattered <10%
180
20.0
100
Yes
Tube 4
Gumbo Clay Unit -Blue-gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Post-Croatan Sand unit.
20 0
250
100
Yes
Tube 5
Gumbo Clay Unit - Blue -gray. stiff, greasy, slightly silty smectite mud.
25.0
28.5
100
Yes
Tube 6
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud.
Shar contact with Sugar Sand Unit at 28.5'.
28.5
30.0
100
Yes
Tube 6
Sugar Sand Unit - Gray to white, slightly muddy, fine to medium quartz sand.
Gumbo Clay Thickness = 10.5'
Gumbo Clay: Top Elevation = -3.98 MSL, Bottom Elevation = -14,48 MSL
E-2 Monitorino Well Data: 18' deep. 1" diameter casing/screen.
#10 slot screen from 13.18', #2 gravel from 1-18'. bentonite pellets from 0-1'
and from 18-30'.
Total Depth Drilled = 30'
Static Water Level on 7-26-15 = 3.26' DTW from TOC, +12,67 MSL
Notes: Top and bottom of tubes sealed wth duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Depth ft.
Groundwater Manaclement Associates - Geologic
Corina Log
Material and Remarks
GMA
To
0.0
5.0
80
Client: PotashCorp - Aurora GMA Project Number: 43626
Farmers Clay Unit - Mottled gray, tan to orange. slightly clayey, fine to
medium sand. Lost to 1', root mat and loose topsoil/Farmers Clay unit.
Rig Geoprobe 6620 DT (Trader)
Hole No.
E-3
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, clayey, fine to
medium sand. Visual contact viewed thru tube at 7.5'.
Sheet
t of 1
Started
Completed
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine to medium sand
Mulinea shells present are white and scattered (<10%).
N 589,353
Date:
07/23/15 Date 07/23/15
Location
E 2.640,887
15.0
16.4
100
+ 14.06 MSL (land surface)
Time:
9:00 AM Time: 9:55 AM
Elevation:
+ 16.48 MSL (top of casing)
Yes
Tube 4
Geologist.
Tex Gilmore - GMA Driller: John Switzer - Trader
Geophysical
Log: No
Depth ft.
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.0
80
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange. slightly clayey, fine to
medium sand. Lost to 1', root mat and loose topsoil/Farmers Clay unit.
5.0
7.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, clayey, fine to
medium sand. Visual contact viewed thru tube at 7.5'.
7.5
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine to medium sand
Mulinea shells present are white and scattered (<10%).
10.0
15.0
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy. sill fine to medium sand.
Mulinea shells present are white and scattered (<10%).
15.0
16.4
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand
fine to medium sand. Mulinea shells present are white and scattered (<101/c)_.
16.4
20.0
100
Yes
Tube 4
Gumbo Clay Unit - Blue -gray, stiff, greasy. slightly silty smectite mud
Gradational contact with Post-Croatan Sand unit, sandy top 0.3', then stiff clay.
20.0
25.0
100
Yes
Tube 5
Gumbo Clay Unit - Blue -gray, stiff. greasy, slightly silty smectite mud.
25.0
28.8
100
Yes
Tube 6
Gumbo Clay Unit - Blue -gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Sugar Sand Unit at 28.8'.
28.8
30.0
90
Yes
Tube 6
Sugar Sand Unit - Gray to white. slightly muddy, fine to medium quartz sand.
Lost last 0.5' due to loose, fluid nature of sands Escaped thru core catcher
Gumbo Clay Thickness = 12 4'
Gumbo Clay: Top Elevation = -2.34 MSL, Bottom Elevation = -14.74 MSL
E-3 Monitoring Well Data: 17' dee 1" diameter casin (screen.
#10 slot screen from 12-17', #2 gravel from 1-17', bentonite pellets from 0-1'
and from 17-30'.
Total Depth Drilled = 30'
Static Water Level on 7-28-15 = 3.55' BTW from TOC, +12.83 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content

Depth ft.
Groundwater Management Associates - Geologic
Coring Loci
Material and Remarks
GMA
T
0.0
5.0
80
Client: PotashCorp - Aurora GMA Project Number: 43626
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Lost to 1', root mat and loose topsoil/Farmers Clay unit
Rig: Geoprobe 6620 DT (Trader)
Hole No
E-4
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, clayey, fine to
medium sand. Visual color change contact viewed thru tube at 8 5'.
Sheet
1 of 1
Started
Completed
Post-Cfoatan Sand Unit - Blue -gray, muddy, shelly fine to medium sand.
Mulinea shells present are white and scattered (<5%).
N 589,875
Date:
07/23/15 Date: 07/23115
Location:
E 2,641,221
150
15.5
100
+ 13.55 MSL (land surface)
Time:
10:00 AM Time 11:30 AM
Elevation:
+ 15.63 MSL (top of casing)
Yes
Tube 4
Geologist
Tex Gilmore - GMA Driller John Switzer - Trader
Geophysical
Log: No
Depth ft.
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.0
80
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Lost to 1', root mat and loose topsoil/Farmers Clay unit
5.0
8.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, clayey, fine to
medium sand. Visual color change contact viewed thru tube at 8 5'.
85
10.0
100
Yes
Tube 2
Post-Cfoatan Sand Unit - Blue -gray, muddy, shelly fine to medium sand.
Mulinea shells present are white and scattered (<5%).
10.0
15.0
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine to medium sand.
Mulinea shells present are white and scattered (<5%).
150
15.5
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand
fine to medium sand. Mulinea shells present are white and scattered <5%
15.5
20.0
10D
Yes
Tube 4
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud
Gradational contact with Post-Croatan Sand unit, sandy top 0.2', then stiff clay.
20.0
250
100
Yes
Tube 5
Gumbo Clay Unit - Dark gray, stiff. greasy, slightly silty smectite mud.
250
27.3
100
Yes
Tube 6
Gumbo Clay Unit - Blue -gray, stiff, greasy, slightly silty smectite mud
Sharp contact with Sugar Sand Unit at 27.3'.
27.3
300
100
Yes
Tube 6
Sugar Sand Unit - Gray to white, slightly muddy, fine to medium quartz sand
Drilled during rain event - limited photo log available.
Gumbo Clay Thickness = 11.8'
Gumbo Clay: Top Elevation = -1.95 MSL, Bottom Elevation = -13 75 MSL
E-4 Monitoring Well Data: 15' dee . 1" diameter casing/screen.
#10 slot screen from 10-15', #2 gravel from 1-15', bentonite pellets from 0-1'
and from 15-30'.
Total Depth Drilled = 30'
Static Water Level on 7-28-15 = 3.25' BTW from TOC, +12.38 MSL
Notes: Top and bottom of tubes sealed with duct tape
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content

Depth ft
Groundwater Manactement Associates - Geologic
Coring Loci
Material and Remarks
GMA
To
00
5.0
100
- client: PotashCorp - Aurora GMA Project Number: 43626
Farmers Clay Unit - Mctt}ed gray, tan to orange, slightly clayey, fine sand
Rig- Geoprrobe 6620 DT (Trader)
Hole No.:
E-5
Yes
Tube 2
_
Sheet
1 of 1
Started
Completed
Post-Croatan Sand Unit - Blue -gray, muddy, shelly, fine sand
Mulinea shells present are white and scattered (<10%).
N 590,075
Date:
07/24115 Date: 07/24/15
Location:
E 2,641,608
13.2
15.0
100
+ 13.70 MSL (land surface)
Time:
1000 AM Time: 11:30 AM
Elevation:
+ 14.49 MSL (top of casing)
Yes
Tube 4
Geologist
Tex Gilmore - GMA Driller John Switzer - Trader
Geophysical
Log: No
Depth ft
%
Recovery
Sample
To Lab
Material and Remarks
From
To
00
5.0
100
Yes
Tube 1
Farmers Clay Unit - Mctt}ed gray, tan to orange, slightly clayey, fine sand
5.0
7.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, clayey, fine sand
medium sand. Visual color chane contact viewed thru tube at 7.5'.
7.5
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shelly, fine sand
Mulinea shells present are white and scattered (<10%).
10.0
132
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand
Mulinea shells present are white and scattered <5%
13.2
15.0
100
Yes
Tube 3
Gumbo Clay Unit - Blue -gray, stiff. greasy, slightly silty smectite mud.
Gradational contact at with Post-Croatan Sand unit, top 0.2' is sli2htly sandy.
15.0
20.0
100
Yes
Tube 4
Gumbo Clay Unit - Gray. stiff, greasy, smectite mud.
20.0
23.8
100
Yes
Tube 5
Gumbo Clay Unit - Gray, stiff, greasy. slightly silty smectite mud.
Sharp contact with Sugar Sand Unit at 23.8'.
23.8
25.0
100
Yes
Tube 5
Sugar Sand Unit - Gray, muddy, fine to medium quartz sand.
Field fit - could not cross drainage ditch to original survey stake
Drilled near large drains a ditch
Gumbo Clay Thickness= 10.6'
Gumbo Clay: Top Elevation = +0.05 MSL, Bottom Elevation = -10 10 MSL
E-5 MonitorinQ Well Data: 13' dee . 1" diameter casing/screen.
#10 slot screen from 8-13', #2 gravel from 1-13', bentonite pellets from 0-1'
and from 13-25'.
Total Depth Drilled = 25'
Static Water Level on 7-28-15 = 5.71' DTW from TOC, +8.78 MSL
Notes: Top and bottom of tubes sealed with duct tape
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Groundwater Management Associates - Geologic Coring Log
GMA Client: PotashCorp - Aurora GMA Project Number: 43626
Rig: Geoprobe 6620 DT (Trader
Started
Completed
Date 07/24/15
Date:
Time 2:05 PM
Time:
Geologist: Tex Gilmore - GMA
Driller
07/24/15
3:35 PM
John Switzer - Trader
Hole No
W-1
Sheet
1 of 1
From
N 588,157
Location:
E 2,639,464
100
+ 17.34 MSL (land surface)
Elevation:
+ 18.44 MSL (top of oasing)
7.2
Geophysical
Log No
Depth ft.
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.0
100
Yes
Tube 1
Farmers Ciay Unit - Mottled gray, tan to orange, organic, clayey, fine sand
5.0
7.2
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand
7.2
100
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand.
Mulinea shells present are white and scattered (<5%).
100
150
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand.
Mullnea shells present are white and scattered <5% .
15.0
195
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy. shelly fine sand.
Mulinea shells present are white and scattered (<5%).
19.5
20.0
100
Yes
Tube 4
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud
Sharp contact with Post-Croatan Sand unit
20.0
25.0
100
Yes
Tube 5
Gumbo Clay Unit - Dark blue -gray, stiff. greasy. slightly silty. smectite mud.
25.0
30.0
100
Yes
Tube 6
Gumbo Clay Unit - Dark gray, stiff. greasy, sightly silty, smectite mud.
A few oyster shell fragments at 30' end of sample tube).
30.0
33.7
100
Yes
Tube 7
Gumbo Clay Unit - Gray, stiff, greasy, slightly silty, smectite mud
33 7
35.0
100
Yes
Tube 7
Sugar Sand Unit - Gray, muddy, fine to medium quartz sand.
Gradational contact with Gumbo Clay at top 0.3'.
Gumbo Clay Thickness = 14,2'
Gumbo Clay: Top Elevation = -2.16 MSL, Bottom Elevation = -16.36 MSL
W-1 Monqoring Well Data: 19' dee . 1" diameter casin /screen
#10 slot screen from 14-19', #2 gravel from 1-19', bentonite pellets from 0-1'
and from 19-35'.
Total Depth Drilled = 35'
Static Water Level on 7-28-15 = 4.65' DTW from TOC, +13.79 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Depth ft.
Groundwater Management Associates - Geologic
Coring Log
Material and Remarks
GMA
�
00
5.0
50
Client: PotashCorp - Aurora GMA Project
Number: 43626
5.0
Rig: Geoprobe 6620 DT (Trader)
Hole No.:
W-2
Farmers Clay Unit - Mottled gray. tan to orange, slightly clayey, fine to
medium sand.
80
Sheet :
1 of 1
Started
Completed
10.0
N 588,738
Date:
07/25/15 Date: 07/25/15
Location:
E 2,639,651
175
100
Yes
Tube 4
+ 16 30 MSL (land surface)
Time
9:00 AM Time: 10:00 AM
Elevation
+ 17 83 MSL (top of casing)
Gumbo Clay Unit - Dark gray. stiff, greasy, slightly silty. smectite mud
Sharp contact with Post-Croatan Sand unit.
Geologist:
Tex Gilmore - GMA Driller: John Switzer - Trader
Geophysical
Log: No
Depth ft.
%
Recovery
Sample
To Lab
Material and Remarks
From
To
00
5.0
50
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, organic, clayey, fore sand
Lost top 2 5', loose organic root mat, topsoil and sandy Farmers Clay unit.
5.0
8.0
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray. tan to orange, slightly clayey, fine to
medium sand.
80
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand.
Mulinea shells present are white and scattered (<5%).
10.0
15.0
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand.
Mulinea shells present are white and scattered (<5%).
15.0
175
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<5%).
175
200
100
Yes
Tube 4
Gumbo Clay Unit - Dark gray. stiff, greasy, slightly silty. smectite mud
Sharp contact with Post-Croatan Sand unit.
20.0
250
100
Yes
Tube 5
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty, smectite mud.
25.0
29.0
100
Yes
Tube 6
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty, smectite mud
290
30.0
100
Yes
Tube 6
Sugar Sand Unit - Light gray, slightly muddy, fine to medium quartz sand
Sharp contact with Gumbo 0ay.
Gumbo Clay Thickness = 11.5
Gumbo Cla 7op Elevation = -1.20 MSL, Bottom Elevation = -12.70 MSL
W-2 Monitoring Well Data: 18' dee . 1" diameter casing/screen
#10 slot screen from 13-18', #2 gravel from 1-18', bentonite pellets from 0.1'
and from 18-30'.
Total Depth Drilled = 30'
Static Water Level on 7.28-15 = 3.76' DTW from TOC, +14,07 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content (7127)

Depth ft.
Groundwater Management Associates - Geologic_
Coring Log
Material and Remarks
C7NiA
To
0.0
5.0
50
Client: Potash Corp - Aurora GMA Project
Number: 43626
5.0
Rig: Geoprobe 6620 DT (Trader)
Hole No..
W-3
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Contact viewed thru sample tube.
75
Sheet
1 of 1
Started
Completed
10.0
P;589,395
Date,
07/25/15 Date: 07/25/15
Location,
E 2,639,742
17 1
100
Yes
Tube 4
+ 15.50 MSL (land surface)
Time:
10:30 AM Time: 12:00 PM
Elevation:
+ 16.42 MSL (top of casing)
Geologist:
Tex Gilmore - GMA Driller John Switzer - Trader
Geophysical
Log: No
Depth ft.
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.0
50
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, organic, clayey, fine sand,
Lost top 2.5', loose or anic root mat, topsoil and sandy Farmers Clay unit.
5.0
7.5
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Contact viewed thru sample tube.
75
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand.
Mulinea shells present are white and scattered (<51/.).
10.0
15.0
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, shelly fine sand_
Mulinea shells present are white and scattered (<10%).
150
17 1
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy. shelly fine sand.
Mulinea shells present are white and scattered (<15%). Sheils increase wide th
17.1
20.0
100
Yes
Tube 4
Gumbo Clay Unit - Blue -gray, stiff, greasy, slightly silty, smectite mud.
Gradational contact with Post-Croatan Sand unit, top 0.2'slightly sandy.
20.0
25.0
100
Yes
Tube 5
Gumbo Clay Unit - Blue -gray, stiff, greasy, slightly silty, smectite mud.
25.0
294
100
Yes
Tube 6
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty, smectite mud.
294
30.0
100
Yes
Tube 6
Sugar Sand Unit - Dark gray, muddy, fine to medium quartz sand.
Transitional contact with Gumbo Clay, top 03 very muddy.
Gumbo Clay Thickness = 12.3'
Gumbo Cla : Top Elevation = -1.60 MSL, Bottom Elevation = -13.90 MSL
W-3 Monitoring Well Data: 18' deep. 1" diameter casin (screen.
#10 slot screen from 13-18', #2 gravel from 1-18', bentonite pellets from 0-1'
and from 18.30'.
Total Depth Drilled = 30'
Static Water Level on 7.28-15 = 3.44' DTW from TOC, +12.98 MSL
Notes: Top and bottom of tubes sealed with duct tape
Samples tubes opened to determine stratlgraphic contacts
were sealed with duct tape and bagged to maintain
moisture content (7127)

Depth
Groundwater Management Associates - Geologic
Corina Lao
Material and Remarks
GMA
To
00
5 0
50
Client: PotashCorp - Aurora GMA Project Number: 43626
Farmers Clay Unit - Mottled gray, tan to orange, organic, clayey, fine sand.
Lost top 2.5', loose organic root mat, topsoil and sandy Farmers Clay unit
Rig: Geoprobe 6620 DT {Trader}
Hole No.:
W-4
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Contact viewed thru sample tube.
Sheet
1 of 1
Started
Completed
Post-Croatan Sand Unit - Blue -gray, muddy, shefly fine sand.
Mulinea shells present are white and scattered (<5%).
N 590.070
Date:
07/27/15 Date: 07/27/15
Location:
E 2,639,971
150
15.5
100
+ 14.98 MSL (land surface)
Time
10:30 AM Time: 12:00 PM
Elevation:
+ 17.55 MSL (top of casing)
Geologist:
Tex Gilmore - GMA Driller: John Switzer - Trader
Geophysical
Log: No
Depth
°'o
Recovery
Sample
To Lab
Material and Remarks
From
To
00
5 0
50
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, organic, clayey, fine sand.
Lost top 2.5', loose organic root mat, topsoil and sandy Farmers Clay unit
5.0
70
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Contact viewed thru sample tube.
7.0
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, shefly fine sand.
Mulinea shells present are white and scattered (<5%).
10.0
150
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<5%).
150
15.5
100
Yes
Tube 4
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<5%).
155
20.0
100
Yes
Tube 4
Gumbo Clay Unit - Blue -gray, stiff, greasy, silty, smectite mud.
200
25.0
100
Yes
Tube 5
Gumbo Clay Unit - Blue -gray, stiff, greasy, slightly silty. smectite mud.
25.0
26.2
100
Yes
Tube 6
Gumbo Clay Unit - Dark blue -gray, stiff, greasy, slightly silty, smectite mud.
26.2
30.0
100
Yes
Tube 6
Sugar Sand Unit - Light gray, muddy, fine to medium quartz sand.
Transitional contact with Gumbo Clay, top 0.3'very muddy.
Gumbo Clay Thickness = 10 7'
Gumbo Clay: Toe Elevation = -0.52 MSL, Bottom Elevation = -11.22 MSL
W-4 Monitoring Well Data: 15' dee . 1" diameter casin Iscreen.
#10 slot screen from 10-15', #2 gravel from 1-15'. bentonite pellets from 0-1'
and from 15-30'.
Total Depth Drilled = 30'
Static Water Level on 7-28.15 = 4.37' DTW from TOC, +13.16 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Depth
Groundwater Management Associates - Geologic
Coring Log
Material and Remarks
GMA__
To
0.0
5.D
100
Client: PotashCorp - Aurora GMA Project Number: 43626
Farmers Clay Unit - Mottled gray, tan to orange, organic. clayey, fine sand.
Rig Geo robe 6620 DT Trader
Hole No..
W-5
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey. fine to
medium sand Contact viewed thru sample tube
Sheet
1 of 1
Started
Completed
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<25%). Loose runny sands.
N 590,575
Date:
07/27115 Date: 07/27!15
Location:
E 2,640,035
15.0
165
100
+ 14.50 MSL (land surface)
Time:
10:30 AM Time: 12:00 PM
Elevation:
+ 15.95 MSL (top of casing)
Yes
Tube 4
Geologist:
Tex Gilmore - GMA Driller John Switzer - Trader
Geophysical
Log: No
Depth
%
Recovery
Sample
To Lab
Material and Remarks
From
To
0.0
5.D
100
Yes
Tube 1
Farmers Clay Unit - Mottled gray, tan to orange, organic. clayey, fine sand.
50
6.0
100
Yes
Tube 2
Farmers Clay Unit - Mottled gray, tan to orange, slightly clayey. fine to
medium sand Contact viewed thru sample tube
60
10.0
100
Yes
Tube 2
Post-Croatan Sand Unit - Blue -gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<25%). Loose runny sands.
10.0
15.0
100
Yes
Tube 3
Post-Croatan Sand Unit - Blue -gray to gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<15%).
15.0
165
100
Yes
Tube 4
Post-Croatan Sand Unit - Gray, muddy, Shelly fine sand.
Mulinea shells present are white and scattered (<10%).
165
200
100
Yes
Tube 4
Gumbo Clay Unit - Blue -gray. stiff. greasy, silty, smectite mud.
Gradational contact with Post-Croatan Sand, top 0 4'slightly sandy.
20.0
25.0
100
Yes
Tube 5
Gumbo Clay Unit - Blue -gray. stiff, greasy, slightly silty, smectite mud.
25.0
29.7
100
Yes
Tube 6
Gumbo Clay Unit - Blue -gray to gray, stiff, greasy, slightly silty, smectite mud.
Bottom 1.C' contains some root fragments and minor sand. very stiff
29.7
30.0
100
Yes
Tube 6
Sugar Sand Unit - Light gray, slightly muddy, fine to medium quartz sand.
Sharp contact with Gumbo Clay.
Drilled near drainage ditch.
Gumbo Ciay Thickness = 13.2'
Gumbo Clay, Top Elevation = -2 00 MSL, Bottom Elevation = -15.20 MSL
W-5 Monitoring Well Data: 16' deep. 1" diameter casing/screen.
#10 slot screen from 11-16', #2 gravel from 1-16', bentonite pellets from 0-1'
and from 16-30'.
Total Depth Drilled a 30'
Static Water Level on 7-28.15 = 3.35' DTW from TOC, +12,60 MSL
Notes: Top and bottom of tubes sealed with duct tape.
Samples tubes opened to determine stratigraphic contacts
were sealed with duct tape and bagged to maintain
moisture content.

Appendix B
Graphic Geologic Coring Logs

+13.61 MSL
— — — — Mottled gray, tan to orange, slightly clayey, ine to
— — - — medium sand. View thru tube shows 0-0.3' layer of brown topsoil present.
Mottled grey, tan to orange, slightly clayey. Ane to
- medium sand.
Blue-gray, muddy, Shelly fine sand.
=) Mulinea shells present are white and scattered (<10%).
+3.61—
- z
z Blue-gray, muddy, Shelly Ane sand.
FT.
a Ana to medium sand. Mulinsa shells present are white and scattered (<10%)
MSL 0 —
U
-1.39-
00 Blue-gray, muddy, shelly Ane sand.
I- Mullnes shells present are white and scattered (<10%).
Dark gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Post-Cretan Sand unit
-6.39 —
Dark gray, stiff, greasy, slightly silty smectite mud.
-11.39—
Dark gray, stir greasy, slightly silty smectite mud.
Gradational contact with Sugar Sand Unit below, becoming sandy last 0.3'.
Gray, slightly muddy, Ane to medium quartz sand.
-16.39—
a
. FARMERS CLAY UNIT
. GUMBO CLAY UNIT VERTICAL SCALE
15'
. POST-CROA7AN
SCALE IN FEET
SAND UNIT . SUGAR SAND UNIT
LEGEND
GMA
-
SAND � CLAY
MUD SHELL
OWOMOWATII MAMAOIMIM ANOC ATM IMC.
File: DRAWINGS/436-26
GEOLOGIC CORING LOG E-1
Date: 8/11/15
Project No. 43626
POTASH CORP- AURORA, BEAUFORT CO., NG
Figure 436-26

+14.02 MSL
Mottled gray, tan to orange, slightly clayey, One to
medium sand. Lost top 2', root mat and loose topsoil/Farmers Clay unit.
+9.02--
Mottled gray, tan to orange, slightly clayey, One to
— medium sand. Visual contact viewed thru tube at 7.5'.
Blue -gray, muddy, shelly Ane to medium sand.
Mulinea shells present are white and scattered (<10%).
+4.02 —
Blue -gray, muddy, shelly One to medium sand.
FT.
Mulinea shells present are white and scattered (<10%).
MSLO
–0.98—
Blue-gray, muddy, sheily One sand.
fine to medium sand. Mulinea shells present are white and scattered (<10%).
Blue -gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Post-Croatan Sand unit.
– 5.98—
Blue -gray, stiff, greasy, slightly silty smectite mud.
–10.98—
Dark gray, stiff, greasy, slightly silty smectite mud.
Sharp contact with Sugar Sand Unit at 28.5'.
- dray to white, slightly muddy, fine to medium quartz sand.
_
—15.98—
0
. FARMERS CLAY
UNIT . GUMBO CLAY UNIT
VERTICAL SCALE
. POST—CROATAN
SCALE IN FEET
SAND UNIT . SUGAR SAND UNIT
5'
LEGEND
GMA
,us"„n, ,MC.
MNGS/436-26
File:
GEOLOGIC CORING LOG E-2
Date: 8/11/15
ER
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

+14.06 MSL
Mottled gray, tan to orange, slightly clayey, fine to
medium sand. Lost top 1', root mat and loose topsoil/Farmers Clay unit
U
+9.06—
V)
— — —
Mottled gray, tan to orange, clayey, fine to
— medium sand. Visual contact uewed thru tube at 7.5'.
2 Blue -gray, muddy, Shelly fine to medium sand.
=) Mulinea shells present are white and scattered (<10%)
+4,06—
-- Z
a
Ln
c Blue -gray. muddy, shelly fine to medium sand.
FT.
a Mulinea shells present are white and scattered (<10%)
_..
MSLO
0
—0.94—
0 Blue -gray, muddy, shelJy fine sand.
a. fine to medium sand, Mulinea shells present are white and scattered (<1C
Hlue-gray, stir, greasy, slightly silty smectlle mud
Gradational contact with Post-Croatan Sand unit, sandy top 0.3. then stiff clay.
—5.94—
Blue-gray, stiff, greasy, slightly silty smectite mud.
—10.94---
blue-gray, star, greasy. slightly silty smectite mud.
Sha contact with Su arSand Unit at 28.8'.
Vray to wnite slightly muddy, nne to medium quartz sand.
—15.94—
Lost last 0.5' due to loose, fluid nature of sands. Escaped thru core catcher.
a
. FARMERS CLAY UNIT
GUMBO CLAY UNIT VERTICAL SCALE
❑ POST—CROATAN SAND
SCALE IN FEET
UNIT SUGAR SAND UNIT
5'
LEGEND
GMA
GROUNDWATER MANAGEMENT ASS"IVIIS. INC.
File: EDR3WINGS/436-26
GEOLOGIC CORING LOG E-3
Date: 8/11/15
Project No. 43626
POTASHCORP—AURCRA, BEAUFORT CO., NC
Figure 436-26

+13.55 MSL
Mottled gray. tan to orange. slightly clayey, fine to
medium sand Lost top 1', root mat and loose topsotl/Farmers Clay unit.
+8.55—
_ _ _-
_ T _ Mottled gray, tan to orange, clayey, fine to
— — — — medium sand Visual color change contact viewed thru tube at 8 5'
- - Blue-gray, muddy, Shelly fine to medium sand.
Mulinea shells present are white and scattered (<5%).
+3.55—
- o;
Blue ray. muddy, shelly 5ne to medium sand.
FT.
Mulinea shells present are white and scattered (<5%).
MSL Q
u
-1.45—
---- a Blue-gray, muddy, shelly fine sand
fine to medium sand Mulinea shells present are white and scattered (<51/o)
Gumbo Clay Unit - Dark gray, stiff, greasy, slightly silty smectite mud,
- _ - - - - - - Gradational contact with Post-Croatan Sand unit, sandy top 0.2'. then stiff clay.
—6.45—
_ �
_ g Dark gray, stiff. greasy. slightly silty smectite mud.
U
— O
— — m
—11.45-1
Blue-gray. stiff, greasy, slightly silty smectite mud.
- - Sharp contact with Sugar Sand Unit at 27.3'.
_ Gray to white, slightly muddy, fine to medium quartz sand.
16.45—
—16.45--
FARMERS
FARMERS CLAY
UNIT . GUMBO CLAY UNIT
VERTICAL SCALE
® POST-CROATAN
SCALE IN FEET
SAND UNIT ® SUGAR SAND UNIT
5'
LEGENDGMA
`��
_-
GROUNDWA711 MANAGEMENT ASSOCIATES. INC.
File: DRAWINGS/436-26
GEOLOGIC CORING LOG E-4
Date: 8/11/15
Project No. 43626
POTASHCORP-AURORA, BEAUFORT CO., NC
Figure 436-26

+13.70 MSL
'
Mooted gray, tan to orange, slightly Clayey, Are sand.
+8.70---
Mottled gray. tan to orange, clayey. fine sand.
—
—
medium sand. Visual color change contact uewed thrta tube at 7.5'.
z
Blue -gray muddy. shelly, Ane sand.
z
Mulinea shells present are white and scattered 10%).
+3.70—
a�
.0 a
Blue -gray, muddy, shelly fine sand
a`^
Mulinea shells present are white and scattered
FT.
MSL 0 — —
—
—
Blue ray, stiff. greasy, slightly silty smectite mud
— —
-
—
Gradational contact at with Post-Croatan Sand unit. top 0.2' is slightly sandy
—
Gray, stiff, greasy, smectite mud.
—6.30—_—---
—_
— —
— —
Gray, stiff. greasy, slightly silty smectite mud
Sharp contact with Sugar Sand Unit at 23.8'.
N
Gray, muddy, fine to medium quartz sand.
0
. FARMERS CLAY UNIT
e
GUMBO CLAY UNIT VERTICAL SCALE
POST—CROATAN SAND UNIT
.
SCALE IN FEET
SUGAR SAND UNIT
5'
LEGEND
GMA
SAND u CLAY
MUD SHELL
� IHT Aum, INC.iHocu
oWouHowerE��
File: DRAWINGS/436-26
GEOLOGIC CORING LOG E-5
Date: 8/11/15
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

+17.34 MSL
Mottled gray, tan to orange, organic, clayey, fine sand
+12.34—
_ _ Mottled gray, tan to orange, slightly clayey, fine to
_
medium sand.
BlueVay, muddy shelly fine sand.
ZMulinea shells present are white and scattered (<5%).
+7.34 —
Blue -gray, muddy, shelly fine sand.
Mulinea shells present are white and scattered (<5%).
d
+2.34—
F T.
Blue -gray, muddy, shelly fine sand.
MSL 0
Mulinea shells present are white and scattered (<5%).
Dark gray, stiff, greasy, slightly silty smectite mud.
—2.66
_
Sharp contact with Post-Croatan Sand unit
— Dark blue -gray. stiff• greasy, slightly silty, smectite mud.
—7.66 —
a
5
Dar gray stiff greasy. slightly silty, smectite mud.
om A few oyster shell fragments at 30' (end of sample tube)
-12.66 —
Gray, stiff. greasy, slightly silty, smectite mud
—. Gray, muddy, fine to medium quartz sand
—17.66—
Gradational contact with Gumbo Gay at top 0.3'. °
. FARMERS CLAY UNIT
. GUM80 CLAY UNJ VERTICAL SCALE
SCALE IN FEET
POST—CROATAN
SAND UNIT . SUGAR SAND UNIT 5'
LEGEND
GMA �
SAND CLAY
DMUD D SHELL
GROUNDWATER MANAOEMINT ASSOCIAT1S, INC.
File: DRAWINGS/436-26
GEOLOGIC CORING LOG W-1
Date: 8/11/15
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

+16.30 MSL
- Mottled gray. tan to orange. organic, clayey. fine sand.
-, Lost top 2.5', loose organic root mat, topsoil and sandy Farmers Clay unit.
+11.30—
- — — Mottled gray, tan to orange, slightly clayey, fine to
— - — medium sand.
Blue -gray, muddy. sheliy fine sand.
+6.30—
Mulinea shells present are white and scattered (<5%).
0
Z
Blue -gray, mutldy, shelly fine sand.
z Mulinea shells present are white and scattered (<5%),
a
a
0
+1.30 —
L)
FT.
Blue -gray. muddy, shelly fine sand
MSL
0 Mulinea shells present are white and scattered (<5%).
06
Dark gray, stiff, greasy. slightly silty, smectite mud.
— — — — Sharp contact with Post-Croaten Sand unit
— 3, 70 —
Dark gray, stiff. greasy. slightly silty, smectite mud.
—8.70—-
- Dark gray, stiff, greasy, slightly silty, smectite mud.
Light gray, slightly muddy, fine to medium quartz sand.
—13.70-1
Sharp contact with Gumbo Gay.
0
. FARMERS CLAY
UNIT GUMBO CLAY UNIT VERTICAL SCALE di
SCALE IN FEET
® P05T—CR04TAN
SAND UNIT N SUGAR SAND UNIT 5
LEGEND
GMA �
DSAND D CLAY
DMUD D SHELL
OROUNOWAIEt AEANAOEMENT ANO[uf[i, INC.
RAWINGS/436-26
Pile! DW
GEOLOGIC CORING LOG W-2
Date: 8/11/15
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

+15.50 MSL
Y Mottled gray, tan to orange, organic, clayey, fine sand.
Lost top 2-5'. loose organic root mat, topsoil and sandy Farmers Clav unit,
+10,50—
7
w
- Mottled gray. tan to orange, slightly clayey, fine to
a medium sand. Contact uewed thru sample tube.
H
Z Blue -gray, muddy, shelly fine sand
:5 Mulinea shells present are white and scattered (<5%),
+5.50—
Z
a
Z
Blue -gray, muddy. Shelly fine sand.
o Mulinea shells present are white and scattered (<10%).
o'
U
+0.50—
0.50—FT.
FT.0
Blue -gray, muddy, Shelly fine sand.
MSL
Mulinea shells present are white and scattered (<15%). Shells increase w/depth
Blue -gray, stiff, greasy, slightly silty, smectite mud
- - - - Gradational contact with Post-Crostan Sand unit, top 0.2' slightly sandy.
—4.50—
Blue-gray, stiff, greasy, sEightly silty, smectite mud.
U
O
M
-9.50—
Dark gray. stiff, greasy. slightly silty, smectite mud.
UarK gray, muddy. tine to medium quartz sand.
-14.50 —
Transitional contact with Gumbo Clay, top 0.3'.ery muddy.
0
. FARMERS CLAY
UNIT . GUMBO CLAY UNIT VERTICAL SCALE
15'
SCALE IN FEET
❑ POST-CROATAN
SAND UNIT . SUGAR SAND UNIT
LEGEND
A
GMA
SAND CLAY
DMUD D SHELL
GROUNDWATER MANAGEMENT AISOCIATLS, INC.
File: DRAWINGS/436-26
W-3
GEOLOGIC CORING LOG W-3
Dote: 8/11/15
Proect No. 43626
POTASHCORP-AURORA, BEAUFORT CO., NC
Figure 436-26

+14.98 MSL
— — Mottled gray, tan to orange, organic, clayey, One sand.
Lost top 2.5% loose organic root met, topsoil and sandy Farmers Clay unit
— -- — — Mottled gray, tan to orange, slightly clayey, One to
+9,98—
medium sand. Contact viewed thnu sample tube.
Blue -gray, muddy, Shelly One sand.
Mulinea shells present are white and scattered (<50/6).
+4.98 —
Blue ray, muddy, Shelly One sand.
Mulinea shells present are white and scattered (<5%).
FT.
MSL 0-
-0-02
Blue -gray, muddy, Shelly One sand.
Mulinea shells present are white and scattered (<5%).
Blue -gray, stiff, greasy, silty, smectite mud.
—5.02—
Blue-gray, stiff, greasy, slightly silty, smectite mud.
—10.02—
_ _
Dark blue -gray, stiff, greasy, slightly silty, smectite mud.
Light gray, muddy, One to medium quartz sand.
Transitional contact with Gumbo Gay, top 0.3'very muddy.
—15.02-
0
. FARMERS CLAY
UNJ . GUMBO CLAY UNIT VERTICAL SCALE
SCALE IN FEET
POST—CROATAN
SAND UNIT . SUGAR SAND UNIT 5.
LEGEND
SAND CLAY
RM
MUD SHELL
GAMNOwAm A%MAGMRW aAAOQAU$. ua.
File: DRAWINGS/436-26
W-4
GEOLOGIC CORING LOG W-4
Date: 8/11/15
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

+14.50 MSL
- - -- - -.
— '- — - — Mottled gray, tan to orange organic, clayey, Tine sand.
u
I
+9.50—
Mottled gray, tan to orange, slightly clayey. fine to
medium sand. Contact mewed thru sample tube.
Blue -gray. muddy, shelly fine sand
Z Mulinea shellspresent.are white_and_Scattered (.<25%). Loose runny sands,
+4.50-
— Z
a
Ul
Z Blue -gray to gray, muddy, Shelly Ine sand.
Q
a Mulinea shells present are white and scattered (<15%).
FT.
0
MSL 0
-0.50 -
►- ;`,
aGray, muddy, Shelly fine sand
Mulinea shells present are white and scattered (<10%).
— — Blue -gray. stiff, greasy, silty, smectite mud.
— Gradational contact with Post-Croatan Sand, top 0.4' slightly sandy
-5.50-
Blue-gray, stiff, greasy, slightly silty, smectite mud.
—10-50—
Blue-gray to gray, stiff, greasy, slightly silty, smectite mud.
— Bottom 1.0' contains some root fragments and minor sand, very stiff
Light gray, slightly muddy. fine to medium quartz sand.
—15.50 —
Sharp contact with Gumbo Clay.
0
. FARMERS CLAY
UNlT GUMBO CLAY UNIT VERTICAL SCALE
SCALE IN FEET
❑POST—CROATAN
SAND UNIT . SUGAR SAND UNIT 5•
LEGEND
'
GMA
SAND CLAY
_
MUD SHELL.
•�
OkOUNbwATlk MAnAOIMlNT ASSOC IATlS. INC.
File: D �WINCS/436-26
GEOLOGIC CORING LOG W-5
Date: 8/11/15
Project No. 43626
POTASHCORP—AURORA, BEAUFORT CO., NC
Figure 436-26

Appendix C
Photographic Records of Core Drilling and Well Drilling Activities (CD-ROM disk)

Appendix D
Terracon Materials Testing Data Reports

ASTM D421 Dry Preparation of Soil Samples for Particle -Size Analysis & Determination of Soil
Constants
• This procedure is used to prepare samples for a particle size analysis and a plasticity test,
where is required to determined test values of air-dried samples.
ASTM D422 Particle -Size Analysis of Soils
• This procedure is for the determination of the distribution of particle sizes in soils. The
distribution of particle sizes larger than the #200 sieve are determined by sieving, whereas
the distribution of particle sizes smaller than the #200 sieve are determined by a
sedimentation process using a hydrometer.
ASTM D2216 Laboratory Determination of Water (Moisture) Content of Soil by Mass
• This procedure covers the determination of the moisture content in soil by mass where the
reduction of mass by drying is due to the loss of water.
ASTM D2487 USCS Classification of Soils for Engineering Purposes
• This procedure describes a system for classifying soils for engineering purposes using the
laboratory data from the particle -size analysis and Atteberg limit tests.
ASTM D2488 Visual Procedure for the Description and Identification of Soils
• This covers the procedures for soil identification based on a visual approach.
ASTM DS084 (Method A) Measurement of Hydraulic Conductivity of Saturated Porous Materials Using
a Flexible Wall Permeameter
• This covers the procedures for the determination of hydraulic conductivity at a controlled
level of effective stress.
ASTM D7263 Laboratory Determination of Density (Unit Weight) of Soil Specimens
• This covers the procedures of determining the total/moist and dry densities (unit weights) of
intact, disturbed, remolded and compacted soil specimens. Density (unit weights) is one of
the key components for determining the mass composition and phase relations of soil.

101
9C
8C
7C
6C
5C
4C
3C
2C
1C
C
Particle Size Distribution Report
GRAIN SIZE - mm.
% +3" % Gravel I % Sand % Fines
Coarse Fine Coarse Medium Fine Silt Clay
0.0 0.0 0.0 0.0 0.0 75.5 6.5 18.0
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X --NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.3
#100
88.5
#200
24.5
Material Description
LIGHT GRAY & ORANGE CLAYEY FINE SAND
Attg rberg Limits
PL= LL= PI=
Coefficients
D90= 0.1537 D85= 0.1426 D600.1099
D50= 0.1001 D80= 0.0811 D15=
D10= Cu= Cc=
Classification
USCS= SC AASHTO=
Remarks
NATURAL MOISTURE IS 27.4%; WET DENSITY WEIGHT
IS 111.3 pcf AND DRY DENSITY WEIGHT IS 87.4 pcf
(no specification provided)
Location: Farmers lay Unit
Sample Number: E C-1 Depth: 5.10 ft Date: 8-5-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Pro ect No: 72101159 Figure E-1 #1
Tested By: LW Checked By: BN

Particle Size Distribution Report
%+3" %Gravel
Coarse Fine
0.0 0.0 0.0
GRAIN SIZE - m
% Sand
)arse Medium Fine
1.3 2.7 82.7
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X -NO)
#4
100.0
#10
98.7
#20
96.8
#40
96.0
#60
93.8
#100
66.1
#200
13.3
101:!1111-11011111
� ON
%+3" %Gravel
Coarse Fine
0.0 0.0 0.0
GRAIN SIZE - m
% Sand
)arse Medium Fine
1.3 2.7 82.7
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X -NO)
#4
100.0
#10
98.7
#20
96.8
#40
96.0
#60
93.8
#100
66.1
#200
13.3
i
■
Material Description
DARK GRAY SILTY FINE SAND WITH SHELLS
Atterberg Limits
PL= LL= PI=
9_6
Coefficients
Dgp= 0.2222 D85= 0.1994 D60= 0.1392
D50= 0.1239 D30= 0.0979 D15= 0.0779
D16= 0.0059 Cu= 23.55 Cc= 11.67
Classification
USCS= SM AASHTO=
Remarks
NATURAL MOISTURE IS 23.3%; WET DENSITY WEIGHT
IS 116.6 pcf AND DRY DENSITY WEIGHT IS 94.6 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: E-1 Depth: 10-12 ft Date: 8-5-2015
=!Ile,
n Consultants, Inc. Client: Groundwater Management Associates,Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
North Carolina Prosect No: 72101159 Flaure E-1. #
Tested By: LW Checked By: BN

Particle Size Distribution Report
%+3. % Gravel % Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.2 8.7 21.2 69.9
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.8
#60
99.3
#100
96.0
#200
91.1
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterberg Limits
PL= LL= P1=
Coefficients
D90= 0.0544 D85= 0.0162 D60= 0.0023
D50= D30= D15=
D10= CU= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 65.6%; WET DENSITY WEIGHT
IS 91.1 pcf AND DRY DENSITY WEIGHT IS 55.0 pcf
(no speciacation provided)
Location: Gumbo Clay Unit
Sample Number: E-1 Depth: 23-24 ft Date: 8-5-2015
=!Ile.
n Consultants, Inc. Client: Groundwater Management Associates,Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
North Carolina ProlectNo: 72101159 Finure R-1 0
Tested By: LW Checked By: BN

PERMEABILITY TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 10.14
Sample Identification: Gumbo Clay Unit from
Specimen Diameter (cm): 7.12
E-1
Dry Unit Weight (pcf): 54.9
Visual Description: Dark gray silty clay
Moisture Before Test (%): 74.0
with mica & fine sand
Moisture After Test (%): 73.7
Remarks: ASTM D5084
Run Number: 1 ♦
2 A 1.18 x 10--4 in/hr
Cel'I Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content (%):
Back Pressure(psi): 39.9
Diff. Head (psi): 2.1
Percent Compaction:
Flow Rate (cc/sec):5.30 x 10^-5
Permeameter type: Flexible Wall
Perm. (cm/Sec): _ 8.31 x 10--8
Sample type: Remolded
TIME
- t (sec)
0
10000
20000
30000
40000
0
r-,
U 1
U
1
i 2
Lu
2
J
3
0
3
0
J
LL 4
5
U t x 10^-7
\ 8 x 10^-8
E
6 x 10^-8
Y
4 x 10^-8
}
F-
H
J
H
0] 2 x 10^-8
Q
W
W
n 1 x 10^-8
0 5
10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626
Project No.: 72101159
Location: NC
File No.:
Date: 8-27-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

rr
W
Z
LL
h
Z
LU
U
it
W
IL
a
Particle Size Distribution Report
urwnv 01ce - mm.
%+3" % Gravel % Sand % Fines
Coarse Fine Coarse Medlum Fine Slit Clay
0.0 0.0 0.0 0.0 0.4 47.0 25.0 27.6
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.6
#60
97.7
#100
84.4
#200
52.6
Material Description
LIGHT GRAY, DARK GRAY &c ORANGE FINE SANDY
CLAY
Atterberg Limits
PL= LL= P1=
Coefficients
D90= 0.1737 D85= 0.1522 D80= 0.0931
DSO= 0.0529 D30= 0.0071 D15=
D10= CU= Cc=
Classification
USCS= CL AASHTO=
Remarks
NATURAL MOISTURE IS 24.0%; WET DENSITY WEIGHT
IS 96.4 pcf AND DRY DENSITY WEIGHT IS 76.1 pcf
(no specification provided)
Location: Farmers Clay Unit
Sample Number: E-2 Depth: 4-5 ft Date: 7-31-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Wintervilie, North Carolina Project No: 72101159 Figure E-2 #1
Tested By: LW Checked By:

Ir
Particle Size Distribution Report
% Gravel I % Sand j % Fines
Coarse I Fina I Coarse I Medium I Fine SIR I Clav
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
95.9
#20
92.6
#40
90.3
#60
87.3
#100
65.0
#200
7.5
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: E-2 Depth: 14-17 ft
Material Description
DARK GRAY FINE SAND WITH SILT AND SHELLS
Alt berg Limlts
PL= LL= PI=
Coefficients
090= 0.3270 D65= 0.2253 D60= 0.1409
D54= 0.1258 D30= 0.1017 D15= 0.0849
D10= 0.0786 Cu= 1.79 Cc= 0.93
Classification
USCS= SP -SM AASHTO=
Remarks
NATURAL MOISTURE IS 28.2%: WET DENSITY WEIGHT
IS 101.9 pcf AND DRY DENSITY WEIGHT IS 79.5 pcf
Date: 7-31-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates,Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Project NO: 72101159 Figure E-2 #2
Tested By: LW __ Checked By: BN

0
Particle Size Distribution Report
vrNnnv
%+3„ % Gravel % Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.0 1 8.7 29.6 61.7
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.9
#100
99.7
#200
91.3
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterberg Limits
PL= LL= P1=
Coefficients
D90= 0.0660 D85= 0.0295 D60= 0.0044
D50= 0.0013 D30= D15=
D10= CU= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 69.8%; WET DENSITY WEIGHT
IS 84.1 pcf AND DRY DENSITY WEIGHT IS 49.5 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: E-2 Depth: 24-28 ft Date: 7-31-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina ProectNo: 72101159 Figure E-2 #3
Tested By: LW Checked By: BN

Particle Size Distribution Report
A t- z ds $ S v
%+3„ %Gravel
Coarse Fine
0.0 1 0.0 0.0
Coarse I Medium
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X -NO)
#4
100.0
#10
100.0
#20
99.9
#40
99.5
#60
97.7
#100
85.5
#200
56.5
Fines
Fine I Slit
43.0 1 16.8
i
Material Description
LIGHT GRAY, DARK GRAY & ORANGE SILTY FINE
SANDY CLAY
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.1706 D85= 0.1481 D60= 0.0843
D50= 0.0191 D30= D15=
D10= Cu= Cc=
Classification
USCS= CL AASHTO=
Remarks
NATURAL MOISTURE IS 27.7%; WET DENSITY WEIGHT
IS 113.0 pcf AND DRY DENSITY WEIGHT IS 88.5 pcf
(no specification provided)
Location: FarmersClay Unit
Sample Number: E-3 . Depth: 7-8 ft Date: 8-5-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina Project No: 72101159 Figure E-3_ #1
Tested By: LW Checked By: BN

10(
sC
8(
A
W 6(
Z
LL
Z 5C
(L
U
W 4C
a -
3C
2C
1C
C
Particle Size Distribution Report
GRAIN SIZE - mm.
%+3" % Gravel I % Sand % Fines
Coarse Fine Coarse Medium FineSlit Clay
0.0 0.0 0.0 3.6 4.7 84.4 4.6 2.7
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
96.4
#20
93.7
#40
0
#60
88.3
#100
61.6
#200
7.3
GRAIN SIZE - mm.
%+3" % Gravel I % Sand % Fines
Coarse Fine Coarse Medium FineSlit Clay
0.0 0.0 0.0 3.6 4.7 84.4 4.6 2.7
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
96.4
#20
93.7
#40
91.7
#60
88.3
#100
61.6
#200
7.3
Material Description
DARK GRAY FINE SAND WITH SILT AND SHELLS
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.3157 D85= 0.2244 D60= 0.1471
D50= 0.1307 D30= 0.1044 D15:0.0861
D10= 0.0792 Cu' - 1.86 Cc= 0.93
Classification
USCS= SP -SM AASHTO=
Remarks
NATURAL MOISTURE IS 28.0%; WET DENSITY WEIGHT
IS 112.7 pcf AND DRY DENSITY WEIGHT IS 88.0 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: E-3 Depth: 12-14 ft Date: 8-5-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Wintervllle North Carolina Pro qct No. 72101159 Fi ure E-3 #2
Tested By: LW Checked By:

1
Particle Size Distribution Report
C G C C C C C O O O p
s s S2 O Q Q
%+3" %Gravel %Sand %Fines
Coarse Fine Coarse Medium Fine Slit clay
0.0 0.0 0.0 0.0 0.0 11.7 32.3 1 56.0
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.9
#100
98.6
#200
88.3
1
■r
n�i
%+3" %Gravel %Sand %Fines
Coarse Fine Coarse Medium Fine Slit clay
0.0 0.0 0.0 0.0 0.0 11.7 32.3 1 56.0
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.9
#100
98.6
#200
88.3
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterbera Limits
PL= LL= PI=
Coefficients
D90= 0.0833 D85= 0.0591 D60= 0.0073
D50= 0.0032 D30= D15=
D10= CU= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 34.0%; WET DENSITY WEIGHT
IS 93.7 pcf AND DRY DENSITY WEIGHT IS 69.9 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: E-3 Depth: 22-25 ft Date: 8-5-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina ProectNo: 72101159 Figure E-3 #3
Tested By: LW Checked By: BN

PERMEABILITY TEST REPORT
TEST
DATA:
SAMPLE DATA:
Specimen Height (cm): 10.13
Sample Identification: Farmers Clay Unit
Specimen
Diameter (cm): 7.15
from E-3
Dry Unit Weight (pcf): 86.8
Visual Description: Light gray, dark gray &
Moisture
Before Test (%): 28.6
orange silty fine sandy clay
Moisture After Test (%): 27.8
Remarks: ASTM D5084
Run Number: 1 •
2 A 1.12 x 10-3 in/hr
Cell
Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test
Pressure(psi): 42.0
Optimum Moisture Content (%):
Back
Pressure(psi): 40.0
Diff.
Head (psi): 2.0
Percent Compaction:
Flow
Rate (cc/sec): 4.94 x 10--4
Permeameter type: Flexible Wall
Perm.
(cm/sec) : 7.90 x 10^-7
Sample type: Remolded
TIME - t (sec)
0 5000
10000 15000 20000
0
U
U
2
I
`1'
W
Z)
J
6
0
J
L�
8
^
10
U
N
1 x 10^-6
N
\
8 x 10^-7
E
U
U
fi x 10^-7
Y
4 x 10^-7
}
I--
'
H
J
H
0]
2 x 10^-7
Q
W
W
n
1 x 10^-7
0 5
10 15 20
AVERAGE
HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for
GMA #43626
Project No.: 72101159
Location:
NC
File No.:
Date:
9-10-2015
Lob No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

PERMEABILITY TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 10.11
Sample Identification: Post-Croaton Sand
Specimen Diameter (cm): 7.19
Unit from E-3
Dry Unit Weight (pcf): 95.1
Visual Description: Dark gray fine sand
Moisture Before Test (%): 23.9
with silt & shells
Moisture After Test (%): 25.7
Remarks: ASTM D5084
Run Number: 1 •
2 e 3.10 x 10^-2 in/hr
Cell Pressure (psi): 45.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content (%):
Back Pressure(psi): 40.0
Diff. Head (psi): 2.0
Percent Compaction:
Flow Rate (cc/sec):1.39 x 10^-2
Permeameter type: Flexible Wall
Perm. (cm/sec) : 2.19 x 10^-5
Sample type: Remolded
3
TIME - t (sec)
0 250
500 750 1000
0
r-.
U
2
U
>
i
4
W
J
0
6
3
0
J
W 8
10
a1
1 x 10^-4
N
\ 8 x 10^-5
E
.Ui 6 x 10^-5
4 x 10^-5
F-
H
J
H 2 x 10^-5
M
Q
W
W
a 1 x 10^-5 0 5 10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626 Project No.: 72101159
Location: NC File No.:
Date: 9-10-2015 Lab No.:
PERMEABILITY TEST REPORT Tested by: LW
Checked by: BN
Terracon Consultants, Inc. Test: CH - Constant head

PERMEABILITY.TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 10.16
Sample Identification: Gumbo Clay Unit
Specimen Diameter (cm): 7.10
from E-3
Dry Unit Weight (pcf): 75.7
Visual Description: Dark gray silty clay
Moisture Before Test (%): 37.7
with mica & fine sand
Moisture After Test (%): 51.8
Remarks: ASTM D5084
Run Number: 1 •
2 ♦ 1.53 x 10-4 in/hr
Cell Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content (%):
Back Pressure(psi): 39.9
Diff. Head (psi): 2.1
Percent Compaction:
Flow Rate (cc/sec):6.99x10^-5
Permeameter type: Flexible Wall
Perm. (cm/sec) : 1.08 x 10--7
Sample type: Remolded
TIME - t (sec)
0 10000 20000 30000 40000
0
U 1
U
a
1 2
W
J
3
j
0
J
L- 4
5
U 1 x 10-6
N
\ 8 x 10^-7
E
0 6 x 10--7
Y
1 4 x 10^-7
}
F-
H
J
H 2 x 10^-7
m
Q
W
ME
cc
W
a 1 x 10^-7
0 5
10 15 20
AVERAGE
HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for
GMA #43626
Project No.: 72101159
Location: NC
File No.:
Date: 9-2-2015
Lob No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

x
W
Z
LL
F—
Z
W
U
[Y
W
a.
1
Particle Size Distribution Report
%+3" %Gravel
Coarse Fine
0.0 0.0 0.0
�nnnv .�i�c -nun.
% Sand
Coarse Medium Fine Slit
0.0 0.1 47.0 21.5
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.9
#60
99.1
#100
89.7
#200
52.9
(no specification provided)
Location: Farmers Clay Unit
Sample Number: E-4 Depth: 4-6 ft
Terracon Consultants, Inc.
Winterville, North Carolina
Material Description
LIGHT GRAY & ORANGE FINE SANDY CLAY
Atterberg Limits
PL= LL= PI=
31.4
Coefficients
D90= 0.1511 D85= 0.1351 D60= 0.0872
D50= 0.0582 D30= 0.0036 D15=
D10= Cu= Cc=
Classification
USCS= CL AASHTO=
Remarks
NATURAL MOISTURE IS 32.0%; WET DENSITY WEIGHT
IS 106.9 pcf AND DRY DENSITY WEIGHT IS 81.0 pcf
Date: 8-10-2015
Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Tested By: LW Checked By: BN
#1

Particle Size Distribution Report
%+3.1 �% Gravel
e Fine
0.0 1 0.0 1.0
Coarse Medium Fine Slit
2.2 6.4 77.4 4.2
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
3/8
100.0
#4
99.0
#10
96.8
#20
93.9
#40
90.4
#60
v
#100
56.0
#200
13.0
n
A
%+3.1 �% Gravel
e Fine
0.0 1 0.0 1.0
Coarse Medium Fine Slit
2.2 6.4 77.4 4.2
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
3/8
100.0
#4
99.0
#10
96.8
#20
93.9
#40
90.4
#60
84.5
#100
56.0
#200
13.0
Fines
Material Description
DARK GRAY SILTY FINE SAND WITH SHELLS
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.3612 Dg5= 0.2543 D60= 0.1588
D50= 0.1381 D80= 0.1043 D15= 0.0792
D10= 0.0085 Cu= 18.69 Cc= 8.06
Classification
USCS= SM AASHTO=
Remarks
NATURAL MOISTURE IS 21.1%; WET DENSITY WEIGHT
IS 101.9 pcf AND DRY DENSITY WEIGHT IS 84.2 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: E4 Depth: 10-14 ft Date: 8-5-2015
--
=ille.
n Consultants, Inc. 7Client:Groundwater Management Associates,Inc
: Lab Testing for Groundwater Management Associates
Various Locations, NC
North Carolina No: 72101159 Fiaure R-4 #
Tested By: LW Checked By:

Of
W
Z
U -
Z
W
W
a.
Particle Size Distribution Report
%+3„ %Caravel I % Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.3 18.7 44.3 36.7
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
#4
100.0-
#10
100.0
#20
99.9
#40
99.7
#60
99.5
#100
98.4
#200
81.0
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterberg Limits
PL= LL= P1=
Coefficients
D90= 0.1017 D85= 0.0858 D60= 0.0300
D50= 0.0143 D30= D15=
D10= CU= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 69.0%; WET DENSITY WEIGHT
IS 93.6 pcf AND DRY DENSITY WEIGHT IS 55.4 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: E4 Depth: 20-24 ft Date: 8-10-2015
Terracon consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Wintervilie, North Carolina Pro'ectNo: 72101159 _Fll ure E-4 #3
Tested By: LW Checked By:

10C
9C
8C
70
LU 60
Z
LL
Z 50
LL
c?
Ir
Lu 40
CL
30
20
10
0
Particle Size Distribution Report
s
RAIN SIZ
% 43„ % 0,val I % Sand % Fines
coarse Fine Coarse (MediumFine Sllt Ciay
0.0 0.0 0.0 0.0 0.2 7.9 35.9 5 6. 0
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
44
100.0
��
#10
100.0
I
M�
99.9
#40
99.8
#60
99.6
W■
#100
99.2
#200
91.9
111
t
1
RAIN SIZ
% 43„ % 0,val I % Sand % Fines
coarse Fine Coarse (MediumFine Sllt Ciay
0.0 0.0 0.0 0.0 0.2 7.9 35.9 5 6. 0
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
44
100.0
#10
100.0
#20
99.9
#40
99.8
#60
99.6
#100
99.2
#200
91.9
Material Description
DARK GRAY SILTY CLAY WITH MICA AND EINE SAND
Atterberg Llmlts
PL= LL= PI
Coef iclents
D90= 0.0553 D85= 0.0243 DBO= O.Uo( ]
Dr,0 0.0037 D30= D15=
D10= CU= Cc=
Classification
USCS= CL -ML AASHTO=
Remarks
NATURAL MOISTURE IS 69.0%; WET DENSITY WEIGHT
IS 93.6 pcf AND DRY DENSITY WEIGHT IS 55.4 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: E4 (re -test) Date: 9-1$-2015
Te rra c o n Consultants, Inc. Client., Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
WI nterVllle, North Carolina Pro ect No: 72101159 FI ure E-4 #3
Tested By: LW Checked By: BN

100
90
80
70
W
W 60
Z
LL
Z 50
W
U
W 40
d
30
20
10
0
Particle Size Distribution Report
ummm nice - mm.
%+3'. % Gravel % Sand % Fines
Coarse Fine Coarse Medium Fine silt Clay
0.0 0.0 0.0 0.0 0.1 66.8 8.9 24.2
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X -NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.9
#60
98.4
#100
86.0
#200
33.1
Material Description
LIGHT GRAY & ORANGE CLAYEY FINE SAND
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.1626 DS5= 0.1475 D60= 0.1074
D50= 0.0957 D30= 0.0164 D15=
D10= Cu= Cc=
Classification
USCS= SC AASHTO=
Remarks
NATURAL MOISTURE IS 17.8%; WET DENSITY WEIGHT
IS 114.3 pcf AND DRY DENSITY WEIGHT IS 97.0 pcf
- (no specification provided)
Location: Farmers Clay Unit
Sample Number: E-5 Depth: 4-6 ft Date: 8-13-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina ProectNo:._72101159 Fi ure E-5,#1
Tested By: LW Checked By:

Particle Size Distribution Report
$e�
% +3" % Gravel I % Sand % Fines
Coarse Fine Coarse I Medium Fine Slit Clay
0.0 1 0.0 4.9 2.9 1 9.5 72.5 4.6 5.6
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
1/2
100.0
3/8
96.7
#4
95.1
#10
92.2
#20
88.1
#40
82.7
#60
75.2
#100
50.8
#200
10.2
Material Description
DARK GRAY FINE SAND WITH SILT AND SHELLS
Afterberg Limits
PL= LL= PI=
Coefficients
D90= 1.1838 D85= 0.5647 D60= 0.1752
D50= 0.1481 D30= 0.1096 Dig= 0.0845
D10= 0.0731 Cu= 2.40 Cc= 0.94
Classification
USCS= SP -SM AASHTO=
Remarks
NATURAL MOISTURE IS 18.4%; WET DENSITY WEIGHT
IS 117.5 pcf AND DRY DENSITY WEIGHT IS 99.2 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: E-5 Depth: 10-12 ft Date: 8-13-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville,_N®rth Carolina Project No: 72101159 _ _ _ .. Figure
Tested By: LW Checked By:

100
90
80
70
60
50
40
30
20
10
0
Particle Size Distribution Report
VRPUIV JILC' 111111.
%+311 % Gravel % Sand % Fines
Coarse Fine Coarse Medlum Fine Slit Clay
0.0 0.0 0.0 0.0 0.0 1 19.6 26.1 54.3
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
100.0
#100
98.0
#200
80.4
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterbera Limits
PL= LL= PI=
Coefficients
D90= 0.1099 D85= 0.0928 D60= 0.0073
D50= 0.0034 D30= D15=
D10= Cu= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 66.0%; WET DENSITY WEIGHT
IS 82.6 pcf AND DRY DENSITY WEIGHT IS 49.8 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: E-5 Depth: 14-15 ft Date: 8-13-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Project No: 72101159 Figure E-5 #3
Tested By: LW Checked By: BN

PERMEABILITY TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 10.15
Sample Identification: Gumbo Clay Unit
Specimen Diameter (cm): 7.11
from E-5
Dry Unit Weight (pcf): 54.6
Visual Description: Dark gray silty clay
Moisture Before Test 71.3
with mica & fine sand
Moisture After Test 62.0
Remarks: ASTM D5081
Run Number: 1 @
2 e 3.63 x 10-4 in/hr
Cell Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content
Bock Pressure(psi): 40.0
Diff. Head (psi): 2.0
Percent Compaction:
Flow Rate (cc/sec):1.62 x 10--4
Permeameter type: Flexible Wall
Perm. (cm/sec) : 2.56 x 10--7
Sample type: Remolded
TIME - t (sec)
O 10000
20000 30000 40000
0
Q 1
U
v
i
2
W
J
3
>
0
J
11 4
5
1 x 10^-6
N
S x 10^-7
E
6 x 10--7
Y
4 x 10^-7
H
H
J
H
0] 2 x 10^-7
Q
W
G:
W
n I x 10^-7
0 5
10 15 20
AVERAGE
HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for
GMA #43626
Project No.: 72101159
Location: NC
File No.:
Date: 9-2-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

Tested By: LW Checked By: BN
#4
100.0
#10
100.0
#20
99.8
#40
99.4
#60
95.6
#100
74.9
#200
49.2
Coars
0 () w
Medium Fine
0 h 50.2
SIEVE PERCENT SPEC.' PASS? dal Description
SIZE
FINER PERCENT (X=Nd) LIGHT GRAY, DARK GRAY & ORANGE CLAYEY FINE
SAND
Coefficients
D9o= O2099 D85= 0, 1863 D60= 0 1071
D50= 0.0779 D 302 D15=
Classification
Remarks
NATURAL MOISTURE IS 28.4%: WET DENSITY WEIGHT
IS 105.6 pcfAND DRY DENSITY WEIGHT IS 823 pcf
Tested By: LW Checked By: BN
#4
100.0
#10
100.0
#20
99.8
#40
99.4
#60
95.6
#100
74.9
#200
49.2
Tested By: LW Checked By: BN

100
90
80
70
60
50
40
30
20
10
0
Particle Size Distribution Report
<< _ o �p�oQ pp (p�V
W M N �- e- x i Fti! R iC iF $ 8 0M it
�I
1
1 0.1 0.01 0.001
GRAIN SIZE - mm.
%+3" % Gravel %. Sand % Fines
coarse Fine Coarse Medium Fine Silt Clay
0.0 0:0 0.0 1 2.7 5.0 82.7 4.4 1 5.2
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
97.3
#20
94.4
#40
92.3
#60
87.6
#100
65.1
#200
9.6
Material Description
DARK GRAY FINE SAND WITH SILT AND SHELLS
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.2901 D85= 0.2252 D60= 0.1404
D50= 0.1249 D30= 0.1001 D15= 0.0825
D10= 0.0757 Cu= 1.86 Cc= 0.94
Classification
USCS= SP -SM AASHTO=
Remarks
NATURAL MOISTURE IS 26.2%; WET DENSITY WEIGHT
IS 112.2 pcf AND DRY DENSITY WEIGHT IS 88.9 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: W-1 Depth: 15-16 ft Date: 8-12-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
WinterVille, North Carolina Pro eq No: 72101159 Figure W-1,#2
Tested By: LW Checked By: BN

Particle Size Distribution Report
14
%+3" % Gravel I% Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.0 0.3 31.5 68.2
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.9
#100
99.8
#200
99.7
Material Description
DARK GRAY SILTY CLAY WITH MICA
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.0165 DS5= 0.0125 D60= 0.0026
D50= D30= D15=
D90= Cu= Cc=
Classification
USCS= CL -ML AASHTO=
Remarks
NATURAL MOISTURE IS 67.3%; WET DENSTIY WEIGHT
IS 82.8 pcf AND DRY DENSITY WEIGHT IS 49.5 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: W-1 Depth: 19.5-20.5 ft Date: 8-12-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina Project No:72101159 Figure W-1 #3
Tested By: LW Checked By:

PERMEABILITY: TEST REPORT
TEST
DATA:
SAMPLE DATA:
Specimen
Height (cm): 10.14
Sample Identification: Gumbo Clay Unit
Specimen
Diameter (cm): 7.10
from W-1
Dry
Unit Weight (pcf): 59.0
Visual Description: Dark gray silty clay
Moisture
Before Test (%): 65.5
with mica
Moisture
After Test (%): 61.2
Remarks: ASTM D5084
Run
Number: 1 •
2 A 1.83 x 10^-4 in/hr
Cell
Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test
Pressure(psi): 42.0
Optimum Moisture Content (%):
Back
Pressure(psi): 39.9
Diff.
Head (psi): 2.1
Percent Compaction:
Flow
Rate (cc/sec):8.34x 10^-5
Permeameter type: Flexible Wall
Perm.
(cm/sec) : 1.29 x 10^-7
Sample type: Remolded
TIME
- t (sec)
0
10000
20000
30000
40000
0
U
1
U
v
2
W
J
0
3
0
J
L-
4
5
1 x 10^-6
\
8 x 10^-7
E
.Ui
6 x 10^-7
Y
4 x 10^-7
}
I
H
J
H
0]
2 x 10^-7
Q
W
cr
W
0-
1 x 10^-7
0 5
10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626
Project No.: 72101159
Location:
NC
File No.:
Date:
9-2-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

10
9
8
70
W 60
Z
LL
Z 50
W
U
W 40
EL
30
20
10
0
Particle Size Distribution Report
. pry p� p} pp o 0 0y
t0 Cf N \ .- .� :.
GRAIN SIZE - m
%13" % Gravel I% Sand
Coarse Fine Coarse Medium Fine
0.0 0.0 0.0 0.0 2.4 56.9
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
98.7
#40
97.6
#60
91.2
#100
67.2
#200
40.7
% Fines
13.2 1 27.5
Material Description
LIGHT GRAY & ORANGE CLAYEY FINE SAND
Attg rberg Limits
PL= LL= PI=
Coefficients
D90= 0.2407 D85= 0.2124 D60= 0.1304
D50= 0.1044 D30= 0.0076 D15=
D10= CU= Cc=
Classification
USCS= SC AASHTO=
Remarks
NATURAL MOISTURE IS 39.3%; WET DENSITY WEIGHT
IS 98.8 pcf AND DRY DENSITY WEIGHT IS 70.9 pcf
(no specification provided)
Location: Farmers Clay Unit
Sample Number: W-2 Depth: 5-6 ft Date: 8-19-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Pro ect No: 72101159 Figure
Tested By: LW Checked By: BN

I
Particle Size Distribution Report
Vf�/\IIY OILG -III
%+3" % Gravel % Sand
Coarse Fine Coarse Medium Fine
0.0 0.0 0.3 1.1 2.8 72.8
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
3/8
100.0
#4
99.7
#10
98.6
#20
96.8
#40
95.8
#60
92.2
#100
65.8
#200
23.0
% Fines
4.8
Material Description
DARK GRAY SILTY FINE SAND WITH SHELLS
Attg rberg Limits
PL= LL= PI=
18.2
Coefficients
D90= 0.2332 D85= 0.2068 D60= 0.1381
D50= 0.1202 D30= 0.0881 D15= 0.0024
D10= Cu= Cc=
Classification
USCS= SM AASHTO=
Remarks
NATURAL MOISTURE IS 22.7%; WET DENSITY WEIGHT
IS 113.6 pcf AND DRY DENSITY WEIGHT IS 92.6 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: W-2 Depth: 14-15 ft Date: 8-19-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina Project No: 72101159 Figure W-2. #2
Tested By: LW Checked By: BN

100
90
80
70
x
W 60
Z
LL
Z 50
uJ
U
W 40
i]-
30
20
10
0
Particle Size Distribution Report
ur%miiN oic.r- - mm.
%+3" % Gravel % Sand % Fines
Coarse Fine I Coarse Medlum Fine Slit Clay
0.0 0.0 0.0 1 0.0 0.0 1.8 23.4 1 74.8
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X --NO)
#4
100.0
#10
100.0
#20
100.0
#40
100.0
#60
99.8
#100
99.3
#200
98.2
Material Description
DARK GRAY SILTY CLAY WITH MICA
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.0154 D85= 0.0108 D60= 0.0014
D50= D30= D15=
D10= Cu= Cc=
Classification
USCS= CL -ML AASHTO=
Remarks
NATURAL MOISTURE IS 70.0%; WET DENSITY WEIGHT
IS 88.0 pcf AND DRY DENSITY WEIGHT IS 51.8 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: W-2 Depth: 24-25 ft Date: 8-19-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Project No: 72101159 _ ._____Figure___ W-2,#3
Tested By: LW Checked By: BN

x
w
Z
Z
W
W
Particle Size Distribution Report
"fie +3„ % Gravel I % Sand % Fines
Coarse Fine Coarse Medium Fine Slit cla
0.0 0.0 0.0 0.0 0.2 75.6 8.1 16.1
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.8
#60
90.8
#100
59.0
#200
24.2
Material Description
DARK GRAY, LIGHT GRAY & ORANGE CLAYEY FINE
SAND
Atterber Lg imits
PL= LL= P1=
Coefficients
D90= 0.2456 D85= 0.2223 D60= 0.1523
D50= 0.1310 D30= 0.0899 D15= 0.0030
D10= Cu= cc=
Classification
USCS= SC AASHTO=
Remarks
NATURAL MOISTURE IS 16.8%; WET DENSITY WEIGHT
IS 110.2 pcf AND DRY DENSITY WEIGHT IS 94.4 pcf
(no specification provided)
Location: Farmers Clay Unit
Sample Number: W-3 Depth: 4-5 ft Date: 8-25-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina ProectNo: 72101159 Figure W-3 01
Tested By: LW Checked By:

Particle Size Distribution Report
%+3„ %Gravel
coarse Fine
0.0 0.0 3.0
GRAIN SIZE - m
% Sand
oarse Medium Fine
3.9 9.3 68.4
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
1/2
100.0
3/8
98.9
#4
97.0
#10
93.1
#20
87.5
#40
83.8
#60
78.3
#100
58.1
#200
15.4
% Fines
7.4
Material Description
DARK GRAY SILTY FINE SAND WITH SHELLS
Atterber Limits imits
PL= LL= 131=
8.0
Coefficients
Dgp= 1.2428 D85= 0.5413 D60= 0.1550
D50=0.1321 D30= 0.0987 D15= 0.0712
DSO= 0.0101 Cu= 15.34 Cc= 6.21
Classification
USCS= SM AASHTO=
Remarks
NATURAL MOISTURE IS 20.3%; WET DENSITY WEIGHT
IS 115.0 pcf AND DRY DENSITY WEIGHT IS 95.6 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: W-3 Depth: 14-15 ft Date: 8-25-2015
=ille,
n Consultants, Inc. Client: Groundwater Management Associates,Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
North Carolina Project No: 72101159 Flqure W-3. #2
Tested By: LW Checked By: BN

SIEVE PERCENT SPEC.* PASS?
SIZE FINER PERCENT (X=NO)
44
100.0
M10
100.0
#20
100.0
#40
100.0
#60
100.0
#100
99.8
#200
99.4
41
,oil,,,
mill
111
■�■�■II�IISlit
c1my
SIEVE PERCENT SPEC.* PASS?
SIZE FINER PERCENT (X=NO)
44
100.0
M10
100.0
#20
100.0
#40
100.0
#60
100.0
#100
99.8
#200
99.4
Material Description
DARK GRAY SILTY CLAY WITH MICA
Atte rg Limits
PL= LL= P1=
Coefficients
D90= 0.0214 085= 0.0158 Dro= 0.0040
D50= 0.0013 D30= D35=
DIO= Cu= Cc=
Classification
USCS= CL -ML AASHTO=
NATURAL MOISTURE IS 57.7%; WET DENSITY WEIGHT
IS 88.9 pcf AND DRY DENSITY WEIGHT IS 56.4 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: W-3 Depth: 20-21 ft Date: $-25-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates. Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Wlntervlll@ North Carolina Pro ect No: 72101159 Figure W-3 #3
Tested By: LW ____ Checked By: BN

PERMEABILITY TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 10.15
Sample Identification; Farmers
Cloy Unit
Specimen Diameter (cm): 7.10
from W-3
Dry Unit Weight (pcf): 85.6
Visual Description: Dark gray,
light gray &
Moisture Before Test (%): 26.2
orange clayey fine sand
Moisture After Test (%): 22.3
Remarks: ASTM D5084
Run Number: 1 6
2 1.41 x 10^-4 in/hr
Cell Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content (%):
Back Pressure(psi): 39.9
Diff. Head (psi): 2.1
Percent Compaction:
Flow Rate (cc/sec):6.43 x 10--5
Permeameter type: Flexible Wall
Perm. (cm/sec) : 9.93 x 10--8
Sample type: Remolded
TIME - t (sec)
0 10000 20000 30000
40000
0
U 1
U
>
I 2
W
0 3
z
0
J
LL 4
5
U 1 x 10^-7
N
N
� 8 x 10--8
E
6 x 10^-8
Y
! 4 x 10^-8
}
I-
H
J
H 2 x 10"-8
0]
Q
W
0_
W
D- 1 x 10^-8
0 5
10 15
20
AVERAGE
HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for
GMA /43626
Project No.: 72101159
Location: NC
File No.:
Date: 9-8-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terraeon Consultants, Inc.
Test: CH - Constant head

PERMEABILITY TEST REPORT
TEST DATA:
SAMPLE DATA:
Specimen Height (cm): 9.88
Sample Identification: Post-Croaton Sand
Specimen Diameter (cm): 7.28
Unit from W-3
Dry Unit Weight (pcf): 92.5
Visual Description: Dark gray silty fine
Moisture Before Test (%): 27.1
sand with shells
Moisture After Test (%): 26.1
Remarks: ASTM D5084
Run Number: 1 0
2 ♦ 4.32 x 10^-3 in/hr
Cell Pressure (psi): 45.0
Maximum Dry Density (pcf):
Test Pressure(psi): 42.0
Optimum Moisture Content (%):
Back Pressure(psi): 40.0
10^-6
Diff. Head (psi): 2.0
Percent Compaction:
Flow Rate (cc/sec) : 2.07 x 10^-3
Permeameter type: Flexible Wall
Perm. (cm/sec) : 3.05 x 10^-6
Sample type: Remolded
TIME - t (sec)
O 1000
2000 3000 4000
0
10--6
L 8
x
0 5 10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626 Project No.: 72101159
Location: NC File No.:
Dote: 9-10-2015 Lab No.:
Tested by: LW
PERMEABILITY TEST REPORT Checked by: BN
Terracon Consultants, Inc. Test: CH - Constant head
10
U
a
1 x
10--5
\
8 x
10^-6
E
U
..
6 x
10--6
_.
Y
4 x
10^-6
F-
H
J
H
2 x
10^-6
M
Q
W
M
0'
W
n-
x
0 5 10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626 Project No.: 72101159
Location: NC File No.:
Dote: 9-10-2015 Lab No.:
Tested by: LW
PERMEABILITY TEST REPORT Checked by: BN
Terracon Consultants, Inc. Test: CH - Constant head

PERMEABILITY TEST REPORT
TEST
DATA:
SAMPLE DATA:
Specimen
Height (cm): 10.12
Sample Identification: Gumbo Clay Unit
Specimen
Diameter (cm): 7.08
from W-3
Dry Unit Weight (pcf): 57.8
Visual Description: Dark gray silty clay
Moisture Before Test (%): 68.8
with mica
Moisture After Test (%): 67.1
Remarks: ASTM D5084
Run Number: 1
2 A 9.55 x 10-5 in/hr
Cell
Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test
Pressure(psi): 42.0
Optimum Moisture Content (%):
Back
Pressure(psi): 39.9
Diff.
Head (psi): 2.1
Percent Compaction:
Flow
Rate (cc/sec): 4.37 x 10--5
Permeometer type: Flexible Wall
Perm.
(cm/sec) : 6.74 x 10--8
Sample type: Remolded
TIME
- t (sec)
0
10000
20000
30000
40000
0
U
U
1
i
I
2
W
J
3
0
J
L-
4
5
U
N
1 x 10--7
N
\
8 x 10^-8
E
0
6 x 10^-8
4 x 10^-8
}
H
H
J
H
m
2 x 10^-8
Q
W
tY
W
d
1 x 10^-8
0 5
10 15 20
AVERAGE HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for GMA #43626
Project No.: 72101159
Location:
NC
File No.:
Date:
9-8-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

a -
Particle Size Distribution Report
VRAIIV QILC - 111111.
%+3" % Gravel % Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 1.5 43.0 12.2 43.3
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X --NO)
#4
100.0
#10
100.0
#20
99.8
#40
98.5
#60
94.6
#100
76.0
#200
55.5
(no specification provided)
Location: Farmers Clay Unit
Sample Number: W-4 Depth: 4-5 ft
Material Description
ORANGE & GRAY SILTY FINE SANDY CLAY
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.2131 D85= 0.1866 D60= 0.0936
D50= 0.0115 D30= D15=
D10= Cu= Cc=
- Classification
USCS= CL AASHTO=
Remarks
NATURAL MOISTURE IS 18.4%; WET DENSITY WEIGHT
IS 109.5 pcf AND DRY DENSITY WEIGHT IS 92.5 pcf
Date: 8-25-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville, North Carolina Project No: 72101159 Floure W-4. #1
Tested By: LW Checked By: BN

tr
W
Z
LL
Z
1
Particle Size Distribution Report
oda +3"
Coarse
0.0 0.0
GRAIN SIZE - mm.
% Sand
FineCoarse Medium Fine Sllt
0.7 4.2 5.7 75.7 4.3
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X=NO)
3/8
100.0
#4
99.3
#10
95.1
#20
91.0
#40
89.4
#60
85.0
#100
59.2
#200
13.7
% Fines
Material Description
DARK GRAY SILTY FINE SAND WITH SHELLS
Atterberg Limits
PL= LL= PI=
9.4
Coefficients
D90= 0.6278 D85= 0.2503 D60= 0.1517
D50= 0.1322 D80= 0.1010 D15= 0.0776
D10= 0.0066 Cu= 22.82 Cc= 10.11
Classification
USCS= SM AASHTO=
Remarks
NATURAL MOISTURE IS 23.0%; WET DENSITY WEIGHT
IS 105.6 pcf AND DRY DENSITY WEIGHT IS 85.8 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: W-4 Depth: 14-15 ft Date: 8-25-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Project No: 72101159 Figure W-4. #2
Tested By: LW Checked By: BN

100
90
80
70
It
Z 60
LL
50
W
U
W 40
IL
30
20
10
0
Particle Size Distribution Report
1.7R/1114 OILC - 111111.
% +3" % Gravel % Sand % Fines
Coarse Flne Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.1 1.9 34.3 63.7
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.9
#60
99.8
#100
99.6
#200
98.0
Material Description
DARK GRAY SILTY CLAY WITH MICA
PL= LL=
AtILIberg Limits
PI=
Coefficients
D90= 0.0220 D85= 0.0176 D60= 0.0038
D50= D30= D15=
D10= Cu= Cc=
Classification
USCS= CL -ML AASHTO=
Remarks
NATURAL MOISTURE IS 67.6%; WET DENSITY WEIGHT
IS 90.0 pcf AND DRY DENSITY WEIGHT IS 53.7 pcf
(no specification provided)
Location: Gumbo Clay Unit
Sample Number: W-4 Depth: 20-21 ft Date: 8-25-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina ProectNo: 72101159 Flg4re_W-4 #3
Tested By: LW Checked By:

x
W
Z
LL
1-
Z
W
U
x
W
a
i
Particle Size Distribution Report
UMMI1V OILC ' IIIIII.
%+3„ % Gravel % Sand % Fines
Coarse Fine Coarse Medium Fine Slit clay
0.0 0.0 0.0 0.0 1.5 43.7 19.7 35.1
SIEVE
SIZE
PERCENT
FINER
SPEC."
PERCENT
PASS?
(X -NO)
#4
100.0
#10
100.0
#20
99.8
#40
98.5
#60
93.7
#100
77.0
#200
54.8
Material Description
DARK GRAY, LIGHT GRAY & ORANGE FINE SANDY
CLAY
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.2160 D85= 0.1853 D60= 0.0941
D50= 0.0265 D30= D15=
D10= Cu= Cc=
Classification
USCS= CL AASHTO=
Remarks
NATURAL MOISTURE IS 18.0%; WET DENSITY WEIGHT
IS 110.0 pcf AND DRY DENSITY WEIGHT IS 93.2 pcf
(no specification provided)
Location: Farmers Clay Unit
Sample Number: W-5 Depth: 4-5 ti Date: 8-26-2015
ierracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina ProectNo: 72101159 Figure W-5 #1
Tested By: LW Checked By: BN

x
W
Z
LL
Z
w
W
1
Particle Size Distribution Report
%+9" Coarse- -Fine Coar:
0.0 0.0 1 2.1 4.4
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
3/8
100.0
INI
#4
97.9
#10
93.5
#20
88.4
#40
86.3
#60
81.6
#100
57.6
#200
13.7
W�
NV�I
milli
%+9" Coarse- -Fine Coar:
0.0 0.0 1 2.1 4.4
SIEVE
SIZE
PERCENT
FINER
SPEC!
PERCENT
PASS?
(X=NO)
3/8
100.0
#4
97.9
#10
93.5
#20
88.4
#40
86.3
#60
81.6
#100
57.6
#200
13.7
GRAIN SIZE - m
% Sand
?dlum 7 Fine
7.2 1 72.6
Silt
Material Description
DARK GRAY SILTY SAND WITH SHELLS
Atterberg Limits
PL= LL= PI=
8.6
Coefficients
D90= 1.1463 D85= 0.3044 D60= 0.1556
D50= 0.1344 D30= 0.1016 D15= 0.0777
D10= 0.0098 Cu= 15.81 Cc= 6.75
Classification
USCS= AASHTO=
Remarks
NATURAL MOISTURE IS 29.6%; WET DENSITY WEIGHT
IS 104.8 pcf AND DRY DENSITY WEIGHT IS 80.9 pcf
(no specification provided)
Location: Post-Croatan Sand Unit
Sample Number: W-5 Depth: 10-11 ft Date: 8-26-2015
Terraeon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Project No: 72101159 Figure W-5.#2
Tested By: LW Checked By: BN

W
W
Z
LL
Z
W
U
it
W
tL
Particle Size Distribution Report
%+3" % Gravel I% Sand % Fines
Coarse Fine Coarse Medium Fine Slit Clay
0.0 0.0 0.0 0.0 0.3 14.6 35.0 50.1
SIEVE
SIZE
PERCENT
FINER
SPEC.'
PERCENT
PASS?
(X=NO)
#4
100.0
#10
100.0
#20
100.0
#40
99.7
#60
98.9
#100
92.0
#200
85.1
-- (no specification provided)
Location: Gumbo Clay Unit
Sample Number: W-5 Depth: 24-25 ft
Material Description
DARK GRAY SILTY CLAY WITH MICA AND FINE SAND
Atterberg Limits
PL= LL= PI=
Coefficients
D90= 0.1290 D85= 0.0739 D60= 0.0092
D50= 0.0049 D30= D15=
D10= Cu= Cc=
Classification
USCS= CH AASHTO=
Remarks
NATURAL MOISTURE IS 71.6%; WET DENSITY WEIGHT
IS 88.9 pcf AND DRY DENSITY WEIGHT IS 51.8 pcf
Date: 8-26-2015
Terracon Consultants, Inc. Client: Groundwater Management Associates, Inc
Project: Lab Testing for Groundwater Management Associates
Various Locations, NC
Winterville North Carolina Proect NO: 72101159 Figure W-5, #3__
Tested By: LW Checked By: BN

PERMEABILITY TEST REPORT
TEST
DATA:
SAMPLE DATA:
Specimen Height (cm): 10.13
Sample Identification: Gumbo Clay Unit
Specimen
Diameter (cm): 7.10
from W-5
Dry Unit
Weight (pcf): 53.8
Visual Description: Dark gray silty clay
Moisture
Before Test (%): 67.8
with mica & fine sand
Moisture
After Test 63.0
Remarks: ASTM D5084
Run Number:
1 •
2 5.53 x 10"-5 in/hr
Cell
Pressure (psi): 47.0
Maximum Dry Density (pcf):
Test
Pressure(psi): 42.0
p�ptimum Moisture Content (�);
Back
Pressure(psi): 39.9
Diff.
Head (psi): 2.1
Pe'rcent Compaction:
Flow
Rate (cc/sec):2.56x 10^-5
Permeameter type: Flexible Wall
Perm.
(cm/sec) : 3.90 x 10^-8
Sample type: Remolded
TIME - t (sec)
0 10000 20000 30000 40000
0
U
U
1
i
a
1
2
W
J
3
j
0
J
L-
4
5
U
N
I x 10^-7
\
8 x 10^-8
E
6 x 10^-8
Y
1
4 x 10^-8
H
J
H
m
2 x 10^-8
Q
W
tY
W
0-
1 x 10^-8
0 5
10 15 20
AVERAGE
HYDRAULIC GRADIENT - dH/L (cm/cm)
Project: Laboratory Testing for
GMA #43626
Project No.: 72101159
Location:
NC
File No.:
Date:
9-8-2015
Lab No.:
Tested by: LW
PERMEABILITY TEST
REPORT
Checked by: BN
Terracon Consultants, Inc.
Test: CH - Constant head

Appendix E
Piezometer Well and Slug Test Well Construction Diagrams

GMA
Bonnerton Stratlgraphy Study
PotashCor Aurora
Piezometer Well Completion Diagram
—- -
.......•...........
E-1 Piezometer Well
PROJECT: 43626
LOCATION : NSsB 207 E2,640,999
EQUIPMENT USED: Gsaprube
6620DT ELEVATION: +19.51 MSL Top of Casing _
START: 7/2412015
END : 7/24/2015 DRILLER; John Swatter
2
1
x.5.9•
Depth (ft) Lkhology
KEY:
1- land surface
1 ` 4
2- Well cap
1
3- I -inch PVC casing
3
4- Bentonite -
4
3
S- 1 -inch, 0.01^ slat PVC screen
5
6- #2 Filter grovel 0
6
10'
6
7
Llthotogy:
6
Farmers Clay Unit
9
Past-Croatan Sand Unit
10
Gumbo Clay Unit
it
Sugar Sand Unit
12
1 5
13
14 j
15
16
17
is
19
20
21
22
23
24
25
4
26
27
25
29
30
3.5"

GMA
Bonnerton Stratigraphy Study
PotashCor Aurora
Piezometer Well Completion Diagram
.a ...... .
E-2 Piezometer Well
PRO]ECr:43626
LOCATION: N588,8414 E2,640,769
EQUIPMENT USED : CieOPiee 6620DT ELEVATION: +15.93 MSL Top of Casing
START: 7/22t2015
END : 712212015 DRILLER : 3ohn Switzer
2
1
Depth (ft) Lnhology
KEY:
1- Land surface
2- Wall rap
2
3- 1 -inch PVC casing
3
4- 9ontanito
4
}
5- 1 -inch, 0.01" slot PVC screen
5
6- Art Filter gravel 0
fi
13'
6
7 -
Lithology:
e
Farmer Clay Unit
9
post-Croaten Sand Unit
10
Gumbo Cloy Unit
it
Sugar Sand Unit
12
s
13
14
1s
5
16
l7
La
19
20
21
22
23
24
25
26
27
28
29
30
3.5"

A
Bonnerton Stratigraphy Study
GMA
PotashCorp Aurora
Piezometer Well Completion Diagram
-- .-
.......... .."•a -,.I ...... •n,'»..
E-3 Piezometer Well
PROJECT: 43626
LOCATION : N569 353E 640 8S7
E UIPMENT USED: Geoprobe
_
6620DT ELEVATION: +16.48 MSL Top of Casing
START: 7 23 2015
END: 7/23/201S DRILLER: Johnswitrer
2
1
Depth (R) Uc -I Vy
KEY:
1- Land surface
1
4
2- Wall cap
2
3- 1 -Inch PVC Casing
3
4- Bentonite —
4
3
S- 1 -inch, 0.01" slot PVC screen
5
6- #2 Flltar gravel O
6
12'
6
7
Lithoiogy:
6
Farmers Clay Unit
9
Post-Croatan Sand Unit
10
Gumbo Clay Unit
11
Sugar Sand Unit
12
13
S
14
s
1s
16
17
18
19
20
21
J:2
23
24
25
4
28
27
28
29
30
3.5"

Bonnerton Stratigraphy Study
GMA
Potash CorpAurora
Piezometer Well Completion Diagram
--
E-4 Piezometer Well
PROJECT; 43626
LOCATION : N589,875 E2,641,221
EQUIPMENT USED : Geoprobe
66200T ELEVATION: +15.63 MSL Top of Caslnq
START: 7123/2015
END : 7/23/2015 DRILLER: John Switzer
2 _
2 -1.08•
D.pth te.i uthnlugy
KEY:
- _
I- Land surface
1
4
2• Well cap
2
3- 1 -Inch PVC casing
3
4- Bentonite
4
3
5- 1 -Inch, 0.01" slot PVC screen
S
6- #2 Filter gravel
6
lo'
— 6
7
Lithology:
B
Farmers Clay Unit
9
Post-Croatan Sand Unit
10
1
Gumbo Clay Unit
11
Sugar Sand Unit
12
5'
13
5
14
35
-
16
17
18
19
20
21
22
23
24
2S
4
26
27
26
29
-1 Td=30
E
3.5"

Bonnerton Stratigraphy Study
GMA
PotashCor Aurora
Piezometer Well Completion Diagram
--:
OROONDWATII MAN"IMINI ASSOUATIS, INC
E-5 Piezometer Well
PROJECT: 43625
LOCATION : N590,075 E2,641,608
EQUIPMENT USED : Geoprobe 6620DT ELEVATION: +14.49 MSL Top of Casing _
START: 7/24/2015
END :7/24/2015 DRILLER: John Switzer
2
1
—0,79'
.Depth (R.) Uthology
KEY:
1- Land surface
1 4
2- Wet] cap
2
3- 1 -Inch PVC casing
3
4- Bentonite
4
3
5- 1 -inch, 0.01" slot PVC screen
5
6- #2 Filter gravel
6
8'
6
7
Lithology:
6
Farmers Clay Unit
9
Post-Croatan Sand Unit
10
Gumbo Clay Unit
5'
S
11
Sugar Sand Unit
12
13
14
1s
16
17
18
19
20
21
22
4
23
24
25
3.5"

G_ +
MPotashCorp
Bonnerton Stratigraphy Study
Aurora
Piezometer Well Completion Diagram
'
�•----•-G-•- ••a -
W-1 Piezometer Well
PROIECT: 47626 LOCATION: N%9,157 !2,639,464
1!QUIPM9lVT USED: Geopmbe 662007 ELEVATION: +18.44 MSL Ta or Casin
START: 7/24/2015 ENG: 7/24/2015 DRILLER: john Swltter
2
1
X1.10'
D•pth(ft.) Uthdo9y
KEY:
1- Land surface
14.
2- WCII cap
2
3- 1 -Inch PVC casing
2
4- Bentanite -
4
3
s
5- 1 -inch, 0.01" slot PVC screen
_
6- 02 Filter gravel
6
14'
6
Litholc gy:
6
Farmers Clay Unit -_
9
Pott-Croatan Sand Unit
10
Gumbo Clay Unit
11
Sugar Sand Unit
12
13
14
15
16
5'
S
17
16
19
20
21
21
27
24
I1
4
26 _...
27
26
29
30
31
32
33
34
l5
3.5"

�
GI�AA
Bonne Ron Stratigraphy Study
PotashCor Aurora
Piezometer Well Completion Diagram
m.�•�,-•�, .-,�, „.ot...,
W-2 Piezometer Well
PROJECT: 43626 LOCATION: N584,738 E2,639,651
EQUIPMENT USED: Geoprobe 6620DT ELEVATION: +17.83 MSL Top of Casing
START: 7124 2015 END: 712412015 DRILLER : john Switzer
2
1
X1.53'
Depth (ft,) LRhology
KEY:
1- Land surface
1 4
2- Well cap
2
3. 1 -Inch PVC casing
3
4- Bentonite
4
3
5. 1 -Inch, 0.01" slot PVC screen
5
6- #2 Filter gravel
6
13'
6
7
tithology:
e
Farmers Clay Unit
9
Post-Cr0atan Sand Unit
10
Gumbo Clay Unit
11
Sugar Sand Unit
12
13
14
15
5'
16
5
11
18
19
20
21
22
23
24
25
_� 4
26
27
28
29
30
3.5"

Bonnerton Stratigraphy Study
GMA
PotashCGrp Aurora
Piezometer Well Completion Diagram
......
W-3 Piezometer Well
PROJECT r 43626 LOCATION: MM 39S E2,639,742
f UIPMfNT USED : GeoPrvbe 682007 ELEVATION: 416.42 MSL Top of Casing
START : 712512015 END : 712512015 MILLER : 3ohn Switzer
2
Depth (h.) Ethology
KEY:
1- Land surface
1
4
2- Well cap
2
3- 1 -Inch PVC casing
3
4- Bentonite
4
3
5. 1 -inch, 0.01" slot PVC screen
5
6- V2 Filter gravel
6
13'
-
6
7
Lithology:
B
Farmers Clay Unit
4
Post-Croatan Sand Unit
10
Gumbo Clay Unit
11
Sugar Sand Unit
12
13
14
15
5'
15
5
17
18
19
20
21
22
23
24
25
—4
26
27
28
29
30
�.j TD=70
3.5"

Bonnertan Stratigraphy Study
;w�
VMA
PotashCorp Aurora
Piezometer Well Completion Diagram
�- _ - -
�•���•-• •.......
W-4 Piezometer Well
PROJECT: 43626____ LOCATION : N590 070E4639,971
_
_
EQUIPMENT USED: robe 6620DT ELEVATION; +17.55 MSL Top of Cali
START: 712712015 END : 712712015 DRILLER : Jahn Switzer
2
1 ..a.s7•
Depth (R.) Utho"
KEY:
1• Land surface
1
4
2- Wali cap
2
3- 1 -inch PVC casing
3
4- Bentonite
4
3
5- 1 -Inch, 0.01' slot PVC screen
5
6- #2 Filter gravel
6
10'
b
7
Litholoff:
6
Farmers Clay Unit
9
Post-Croaton Sand Unit
10
1
Gumbo Clay Unit
Ii
Sugar Sand Unit
12
5'
13
14
15
16
5
17
is
19
20
21
22
23
24
25
=-
26
27
2E
29
30
3.S"

GMA
Bonner -ton Stratigraphy Study
PotashCor Aurora
Piezometer Well Completion Diagram
o.o. �...•�.���� „�
W-5 Piezometer Well
PROJECT ; 43626 LOCATION: N590,575 f2,640,035
EgUIPMENT USED: Geoprotx 8620DT ELEVATION: +15.95 MSL Top of Casing
START: 7/2712015 END : 7/27 2015 DRILLER : John Switzer
2
Depth (ft.) Lithology
KEY:
1- Land surface
1
4 �-
2- Well cap
2
3- 1 -inch PVC casing
3
4- Bentonite
4
3
5- 1 -inch, 0.01" slot PVC screen
S
^
6- #2 Filter gravel1J
6
1 t'
6
7
Lithology:
e
Farmers Clay Unit
9
Post-Croatan Sand Unit
10
Gumbo Clay Unit
11
Sugar Sand Unit
12
13
5'
14
15
16
17
18
_.S
19
20
21
22
23
24
25
4
26
27
28
29
30
3. S"

GM
Bonnerton Stratigraphy Study
PotashCorp Aurora
Slug Test Well Completion Diagram
"-•"...M,
Slug Test Well @ E-3
PROJECT: 43626 LOCATION: NS69,347 E2,640,862
EQUIPMENT USED: Geoprobe 662ODT ELEVATION: +16.36 MSL Top of Cuing
START: 9/2/2015 END: 9/2/2015 DRILLER: John SwHzw
2
1
DOPM (R.) ltehdogy
KEY:
1- Land surface
1
2- Well cap
2
3- 2 -inch PVC casing
3
4 Bentonite -
4
3
S- 2 -Inch, 0.02" slot PVC screen
5
4
B- #2 Filter gravel
6
7
Llthology:
8
Fanners day Unit
9
Post-Croatan Sand Unit
10
Gumbo Clay Unit
11
12
13
14
15
19'
16
17
1$
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Bonnerton Stratigraphy Study
GMA
VotashCor Aurora
Slug Test Well Completion
-:
arourrow+n� M���w..mi �uon�ns. Nr,
Slug 1 est Well @ •t - J
TestYr
PR03ECT : 43626 LOCATION s 015691409 E2,639,743
EQUIPMENT USED s Cleo robe 6620DT ELEVATION: +16.57 MSL Top of Casing
START : 91112015 END : 912/2015 DRILLER : 3ohn Switzer
2
DWth (R) Uthalegy
KEY:
_
1- Lend surface
1
2- Well cap
2
3- 2 -inch PVC casing
3
4- Bantonita
4
3
5- 2 -Inch, 0.02" slot PVC screen
5
4
6- #2 Filter gravel 0
6
7
Lithology:
S
Farren Clay Unit
A
Post -[matin Sand Unit
10
Gumbo Clay Unit
11
12
17.5'
13
14
1S
18'
16
17
19
19
20
21
22
23 10'
24
25
26
27
28
TD = 28

Appendix F
Slug Testing Monitoring Log Forms

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Project Number & Location: 43626-Bonnerton Stratigraphy Study
Well#: E-3
Date: 9/912015 Start Time: 1206 prn
Static Water Level: 12.34 ft below Toe of Casin
Elapsed Time Water Level Change in Water
(min) (ft) Level, H
(h)
Head Ratio
HIH, Comments
130 13.47 1.13
0 43
140 13.39 1.05
0,40
150 13-31 0,97
0,37
160 13.24 0,90
0,35
170 13.17 0.83
0.32
180 13.11 0.77
0.30
190 13,04 0.70
0.27
200 1299 0.65
0.25
220 12,88 0.54
0.21
240 12.79 0.45
0.17
260 12.71 0.37
0.14
280 12.64 0.30
0.12
300 12.59 0.25
0.09
320 12.54 0.20
0.08
340 12.51 0.17
0.06
360 12.47 0.13
0,05
380 12.44 0,10
0,04
400 12.42 0,08
0,03
420 12.40 0.06
0.02
440 12.39 0,05
0.02
460 12.38 0.04
0.02
480 1239 0.05
0.02
500 12,40 1 0.06 1
0.02
Notes: Slug out test performed by withdrawing one 1.5-inch diameter by 3-fool metal slug from the well
GMA Project #: 43626 - PCS Aurora, Bonnerton Stratigraphy Study
Measuring Point Description: Top of Well Casing
MP Height above Land Surface: 1.95 feet
Radius of Well Casing, r,: 2.0 inches (0.17 feet)
Radius of Well Screen (Radius of boring if a screened and gravel-packed well), R: 4.0 inches (0.33 feet)
Length of Submerged Well Screen (Length of gravel pack for a screened and gravel-packed well j, Lt: 9,5 feet
Well Contractor: John Switzer Trader Construction
Person Recorin Data: Ivan Gilmore and K fe Quick GMA

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Project Number & Location: 43626-Bonnerton Strati2raphy Study
Well#: W-3
Date: 91912015 Start Time: 11:07 am
Static Water Level: 6.09 k below Top of Casing
Elapsed Time Water Level Change in WaterLevel, H
{min) (ft) (1t)HlHo
Head Ratio Comments
130 7.79 1.70
0,43
140 7.70 1,61
0.41
ISO 7.59 1.50
0-36
160 7.52 1.43
0-36
170 7.44 1.35
0.34
180 7.36 1.27
0.32
190 7.29 1.20
0.31
200 7.22 1.13
0.29
220 7.10 1.01
0.26
240 6,99 0.90
0.23
260 6,90 0.81
0,21
280 6-81 0,72
0.18
300 6.74 0,65
0,16
320 6.67 0,58
0.15
340 6.61 0.52
0,13
360 6.56 0.47
0.12
380 6.52 0.43
0.11
400 6.47 0-38
0.10
420 6.43 0.34
0.09
440 6.41 0.32
0.08
460 6.37 0-28
0.07
480 6,35 0.26
C.07
500 6,32 0.23
0.06
Notes, Slug out test performed by withdrawing one 1.5-inch diameter by 7-foot metal slug from the well
GMA Project 9: 43626 - PCS Aurora, Bonnerion Stratigraphy Study
Measuring Point Description: Top of Well Casing
MP Height above Land Surface: 1.15 feet
Radius of Weli Casing, r,: 2.0 inches (0.17 feet)
Radius of Well Screen (Radius of boring if a screened and gravel-packed well), R; 4,0 inches (0.33 feet)
Length of Submerged Well Screen (Length of gravel pack for a screened and gravel-packed well). L,: 10.5 feet
W ell Contractor: John Switzer Trader Construction
Person Recorin Data: lean Gilmore and K e Quick GMA

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