20080868 Ver 2_Wetland Hydrology Monitoring -2015 and 2016_20170809

V PotashC®rp�
Helping Nature Provide
Certified Mai]
August 7, 2017
Ms. Karen Higgins
401 and Buffer Permitting Unit Supervisor
NC DEQ — Division of Water Resources
512 N. Salisbury St, #942-E
Raleigh, NC 27604
Dear Ms. Higgins:
PotashCorp - Aurora
RECEIVED/NCDENR/DWR
AUG 9 2017
Water Quality Regional
Operations Section
Washington Regional office
The NC Division of Watel? 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 expansion in Beaufort County. Portions of Conditions 12 and 13 of the Certification require
groundwater monitoring of the protected portion of the Bonnerton Road Non-Riverine Wet
Hardwood Forest in order to ensure that the existing hydrology of this site is maintained.
Monitoring of the hydrology has occurred since 2015, and the first deep well in Bonnerton
pumping water from the Castle Hayne Aquifer was turned on in December 2016. Enclosed is a
report titled "2016 and 2015 Wetland Hydrology in the Bonnerton Road Non-Riverine Wet
Hardwood Forest Beaufort County, North Carolina" reporting on the monitoring results.
If you have any questions, please call me at [phone], or email [e-mail].
Sincerely,
,7c-1 M
J ey C. Furness
Senior Scientist
Enclosure
PC: Anthony Scarbraugh — DWR, Washington w/encl.
K. Alnandy w/Intro & Summary
23-01-004-29 w/encl.
S. Cooper — CZR w/o encl.
1530 NC Hwy 306 South, Aurora, NC USA 27806 T [phone]
PotashCorp. I www.potashcorp.com

RECEIVED/NCDENR/DWR
AUG 9 2017
2016 AND 2015 WETLAND HYDROLOGY IN THE Water quality Regional
Opperations Section
BONNERTON ROAD NON-RIVERINE WET HARDWOOD FORCJtWasington Regional office
BEAUFORT COUNTY, NORTH CAROLINA
Prepared for:
PCS Phosphate Company, Inc.
Prepared by:
CZR Incorporated
4709 College Acres Drive, Suite 2
Wilmington, NC 28403
July 2017

2016 AND 2015 WETLAND HYDROLOGY IN THE
BONNERTON ROAD NON-RIVERINE WET HARDWOOD FOREST
BEAUFORT COUNTY, NORTH CAROLINA
Prepared for:
PCS Phosphate Company, Inc.
Prepared by:
CZR Incorporated
July 2017

TABLE OF CONTENTS
1.0 Introduction............................................................................................................................................1
1.1 Area Description.................................................................................................................................1
2.0 Methodology...........................................................................................................................................1
2.1 Water Level.........................................................................................................................................1
2.2 Rainfall and Drought...........................................................................................................................2
3.0 Results and Discussion............................................................................................................................3
3.1 Soil Series and Soil Profiles................................................................................................................. 3
3.2 Rainfall and Drought in 2016 and 2015..............................................................................................3
3.3 Wetland Hydrology.............................................................................................................................4
4.0 Summary .................................................................................................................................................5
Cover Photo: view to north from vicinity of wells BHW 12/13HW 13, 20 July 2017
Bonnerton NRWHF ii PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

LIST OF FIGURES
Figure 1 401 Water Quality Certification Condition 13 Wetland Hydrology Monitoring ............. F-1
Figure 2 Non-riverine Wet Hardwood Forest Areas (135A and 58A) avoided by Mod Alt L......... F-2
Figure 3 Bonnerton NRWHF Hydrology Monitoring Wells............................................................ F-3
Figure 4 Bonnerton NRWHF Wells and Soil Series........................................................................ F-4
Figure 5 2016 Porter Creek and WETS -Aurora 6N Rainfall........................................................... F-5
Figure 6 2015 Porter Creek and WETS Aurora 6N Rainfall............................................................ F-6
LIST OF TABLES
Table 1 Soil profile descriptions.................................................................................................. T-1
Table 2 Monthly and annual rainfall for 2016 and 2015 recorded at the Porter Creek rain gauge
and at the PCS Aurora 6N station................................................................................... T-3
Table 3 Drought conditions for the south side of Pamlico River in the vicinity of South Creek for
theyears 2012-2016....................................................................................................... T-3
Table 4a 2016 and 2015 wetland hydroperiods in the Bonnerton non-riverine wet hardwood
forest with all rainfall data.............................................................................................. T-4
Table 4b 2016 and 2015 wetland hydroperiods in the Bonnerton non-riverine wet hardwood
forest during normal or below normal rainfall............................................................... T-5
LIST OF APPENDICES
Appendix A Graphs of Hydrology of Six Porter Creek Leveltrolls and Turn -On Dates of Pumps in Mine
Perimeter Deep Wells
Bonnerton NRWHF iii PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

1.0 Introduction
Per Condition 13 of the modified 401 Water Quality Certification issued in January 2009 for the PCS
Phosphate mine continuation near Aurora NC (DWQ #2008-0868, version 2.0), wetland hydrology of the
portions of the Bonnerton Road non-riverine wet hardwood forest (NRWHF) shown as "135A" and
"58A" on Figure 1 shall be monitored before and after the mine moves through the area between the
avoided NRWHF areas and within the permitted mine boundary (Figure 2). The data collected are to
ensure that the wetland hydrology of the two NRWHF areas avoided by the permitted mine boundary is
maintained after mine impacts are completed and/or the mined -through area has been reclaimed.
1.1 Area Description
The Bonnerton Road NRWHF is located on a peninsula between Durham Creek to the west and Porter
Creek to the east; both creeks flow north to the nearby Pamlico River (Figure 1). Surface water flow of
the peninsula into the two creeks is separated by the divide known as the Suffolk Scarp, a geomorphic
feature whose highest elevation in this vicinity is just to the west of the 135A NRWHF (Figure 1). Slope
of the terrain on the most eastern side of the scarp towards Porter Creek is —0.2 percent, while the slope
approaches 1 percent nearer to the eastern toe of the Suffolk Scarp. Similar to other outer coastal plain
interfluves in North Carolina, where the underlying Castle Hayne limestone is close to the surface, the
forested landscape of the peninsula is gently rolling with occasional small closed depressions and small
non-hydric areas of higher elevation.
2.0 Methodology
2.1 Water Level
To monitor the pre -mine hydrology of the monitored area, a total of 14 semi -continuous electronic Level
TROLL 500 data -logger water level monitoring wells, manufactured by In -Situ, were installed in June and
July 2015 at the locations shown in Figure 3 (BHW1-BHW34). In addition to the 14 wells installed in
2015, there are six additional well locations shown on Figure 3 used to monitor the wetland hydrology
adjacent to upper Porter Creek for a separate project. Two other types of monitoring wells have been
used at four of these locations (PCW1, PCW3, PCW4, and PCW6) since 2006 (Remote Data Systems
(RDS) WL20s and WL80s and RDS Ecotone 20s and Ecotone 80s] but Level TROLL 500s have been in place
at all six locations since 2011(wells at PCW2 and PCWS were added).
Each of the 14 Level TROLLS is housed inside a 2-inch diameter PVC well screen (0.010-inch slots)
installed to a depth of approximately 32 inches and backfilled with filter sand. The recorder is
suspended on a 43.75-inch cable in the well screen to record water levels within at least -20 inches
below the ground surface and up to +20 inches above the surface. Among the 14 wells the range of
water levels which can be recorded below the surface ranges from -24.25 to -31.75 inches and the range
Bonnerton Road NRWHF 1 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

of surface water which can be recorded ranges from +18 to +26 inches. The units record the water level
every 1.5 hours (16 times per day). The six upper Porter Creek wells are also housed inside a 2-inch
diameter PVC well screen with 0.010-inch slots, but the Level TROLL cable is 60.25 inches long and
among these wells, the range for below ground water level is -29.75 to -33.25 inches, and the range of
surface water is +32.75 to +36.5 inches. (The longer cable is used for the upper Porter Creek wells as
part of a different monitoring project methodology and protocol.) To prevent damage by bears, the
above -ground portions of all well screens were surrounded by a fence enclosure made of metal T-posts
and strands of barbed wire. All 20 monitoring wells were checked and downloaded once a month.
Most of the 14 wells are located in portions of the hardwood flat at slightly higher elevations than the
six Porter Creek wells; however, no elevations have been surveyed so perceived differences in elevation
are not quantified.
Wetland hydroperiods were calculated for each monitoring well during the growing season. A
hydroperiod is defined as consecutive days during the growing season that the water table is within 12
inches of the surface or the surface is inundated, and is expressed as a percentage of the growing
season. For this project, the growing season is defined by the Regional Supplement to the Corps of
Engineers Wetland Delineation Manual: Atlantic and Gulf Coastal Plain Region (Version 2.0) (USACE
ERDC 2010) to match the Natural Resources Conservation Services' (NRCS) WETS tables and is 282 days
long in non -leap years (28 February-6 December).
2.2 Rainfall and Drought
Rainfall is collected and measured using a RDS tipping bucket style rain gauge. As rain falls it lands in the
funnel of the rain gauge. Water is directed down to the bottom of the funnel where it drips into two
carefully calibrated "buckets" balanced on a pivot. Once the bucket has reached its calibrated amount,
0.010 inch of rain, it tips down registering the event as the opposite bucket rises to begin collecting the
next calibrated amount of rain. Water is allowed to drain out of a hole on either side of the rain gauge
underneath each bucket. The Porter Creek RDS rain gauge was used for local rainfall data (Figure 3)
except during a data gap or malfunction when the Aurora Station 6N data was used (located
approximately 4.7 miles away). After 2013, another RDS rain gauge (located 3.3 miles away at DCUT19)
may also serve during data gaps.
Long-term rainfall collected at the NOAA station PCS Aurora 6N was used by the Natural Resources
Conservation Service (NRCS) to provide what is known as the WETS Aurora Station 6N rainfall data.
These data were downloaded by CZR Incorporated and used to build annual rainfall figures to determine
periods of normal rainfall. "Range of Normal' refers to the 30th and 70th percentile thresholds of the
probability of onsite rainfall amounts outside of the normal range (based on historical averages from
1971-2000). In December of 2016, the long-term historical averages were updated to include 1981-
2010.
Bonnerton Road NRWHF 2 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

Drought conditions are monitored nationally by several indexes. Periods of drought can affect the
hydrology of a site and should be taken into consideration when wetland hydrology is interpreted. As
suggested in the USACE 2010 Regional Supplement, the Palmer Drought Severity Index (PDSI) was used
to determine drought periods for the area. The PDSI is useful because it "takes into account not only
precipitation but also temperature, which affects evapotranspiration, and soil moisture conditions" (US
Army Corps of Engineers 2010). The PDSI is calculated monthly and is based on major climatic divisions
within each state (US Army Corps of Engineers 2010). Although the index is not site -specific, for the
purposes of this report it provided sufficient information to make general statements about drought
conditions in the area. Drought conditions described by this index by month and year are for the NOAA
Central Coastal Plain region of North Carolina. The US Drought Monitor
(http://droughtmonitor.uni.edul provides a synthesis of multiple indices and impacts and reflects the
consensus of federal and academic scientists on regional conditions on a weekly basis (updated each
Thursday). The area used for regional drought conditions includes numerous watersheds of various sizes
and may cover portions of more than one county.
3.0 Results and Discussion
3.1 Soil Series and Soil Profiles
The soil survey for Beaufort County NC (Kirby 1995) and web soil survey data show the area of the
Bonnerton NRHWF as underlain mostly by Tomotley fine sandy loam and several other soil series which
are all considered hydric; two of the soil series are considered non-hydric (Altavista fine sandy loam and
Augusta fine sandy loam) (Figure 4). Since earlier well installation soil profiles were described by several
biologists at different times, all 20 well locations were re -visited and the soil profiles were re -described
using the NRCS hydric soil indicators (USDA 2010) as directed by the 2010 regional supplement (Table 1).
3.2 Rainfall and Drought in 2016 and 2015
Monthly rainfall recorded in 2016 and 2015 at the Porter Creek rain gauge and at the PCS Aurora 6N
station is shown in Table 2. In 2016, monthly rainfall was greater in February, June, July, September and
October when compared to the WETS average range (Figure 5). Rainfall for March and mid to late
August were below normal with the remainder of the year within WETS normal range. Hurricane
Matthew, a Category 1 storm, made landfall in Cape Romain National Wildlife Refuge, SC on 8 October
2016. Above average rainfall spikes began in the PCS area on 7 October, coincident with arrival of the
outer rain bands of the hurricane in North Carolina.
In 2015, monthly rainfall was greater in June, October, and late November through late December when
compared to the WETS percentiles (Figure 6). At the end of January and March, the 30-day rolling total
was slightly above normal. Rainfall for the month of August was below normal and the rainfall for the
remainder of the year fell within the WETS normal range.
Bonnerton Road NRWHF 3 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

The US Drought Monitor (htto://droughtmonitor.unl.edu) provides a synthesis of multiple indices and
reflects the consensus of federal and academic scientists on regional conditions on a weekly basis
(updated each Thursday). In 2015, all 41 weeks of the growing season were considered normal with no
drought status in the vicinity of the Bonnerton Road NRHWF "135A" and "58A" project areas (Table 3;
three years prior to 2015 are also shown). During 2016, three weeks in April were assigned drought
condition (DO - Abnormally Dry) by the US Drought Monitor or 6 percent of the entire year and 7
percent of the 41-week growing season (Table 3).
3.3 Wetland Hydrology
Monitoring Year 2016
2016 represents the first full monitoring year for the 14 BHW wells. During all rainfall events in 2016, all
BHW and PCW wells exhibited wetland hydroperiods. Of the 14 BHW wells, 8 wells were >6-12.5
percent and 6 wells were >25-75 percent of the growing season. Similarly, all six PCW wells were >6-
12.5 percent (Table 4a).
When above average rainfall is removed (Figure 6), only one well (PCWI) decreased from >12.5-25.0
percent to 26.0-12.5 percent during normal and below normal rainfall conditions (Table 4b).
Monitoring Year 2015
The 14 BHW wells were installed at the end of June 2015 and beginning of July 2015; the six upper
Porter Creek wells collected data all year. All 14 semi -continuous BHW wells exhibited wetland
hydroperiods using all rainfall data between June and December and the six Porter Creek wells exhibited
wetland hydroperiods between February and December (Table 4a). Among the 14 wells in the higher
elevations of the hardwood flat, BHW6 had the longest hydroperiod of 23.8 percent of the growing
season while longest hydroperiods at the remaining wells were in the range of >-6.0 - 12.5 percent of the
growing season. The six wells in upper Porter Creek are located in somewhat lower elevations than
some of the other 14 wells and using all 2015 rainfall data, longest hydroperiods were 26.0-12.5 percent
of the growing season with PCW6 exhibiting the longest hydroperiod of 24.5 percent (Table 4a).
When dates with above normal rainfall during 2015 (Figure 6) are removed and only normal and below
normal rainfall periods are used for evaluation, three BHW wells did not exhibit any wetland
hydroperiods between June and December (one of these four exhibited water within 12 inches of the
surface but for less than 6 percent of the growing season), nine had longest hydroperiods in the range of
26.0-12.5 percent, and longest hydroperiod at one well was >12.5-25.0 percent (Table 4b). All six PCW
wells had wetland hydroperiods in the range of >12.5-25.0 percent of the growing season during normal
and below normal rainfall.
Bonnerton Road NRWHF 4 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

Mine Perimeter Deep Well Pumps and Near Surface Hydrology
At agency request, PCS provided CZR information about the locations and dates of operation (turn -ON
and turn -OFF dates) of pumps in deep wells around the Bonnerton Mod Alt L mine perimeter for
analysis of potential effects on adjacent wetland hydrology attributed to the pump activity. As of 4 June
2017 three deep well pumps were active. Two of the three deep wells/pumps in operation in the
Bonnerton Tract were started in mid -December 2016 and the third in early January 2017; as of the date
of this report, not enough data have been collected for meaningful statistical analysis. However, graphs
of the water levels of the 14 adjacent wetland wells in the Bonnerton NRWHF were examined before
and after the pumps were turned on in late 2016 through April 2017. The graphs do not reveal any
apparent change in water level in the last weeks of 2016 through April 2017 other than response to
rainfall events. These graphs are shown in Appendix A of this report along with a figure of the locations
of the deep wells relative to the level TROLLS. Additional analysis will be done when more data are
available.
4.0 Summary
During 2016 and 2015 monitoring years, all 20 ground water monitoring wells exhibited wetland
hydroperiods when all rainfall data are used to tabulate consecutive number of days of water levels
above -12.0 inches (relative to ground surface). The first full monitoring period for the BHW wells was
2016 and both the Bonnerton and the Porter Creek wells exhibited wetland hydroperiods during using
all rainfall data: eight BHW wells had longest hydroperiods of >12.5-25.0 percent, six BHW wells had
longest hydroperiods of >25.0-75.0 percent, and all Porter Creek wells had longest hydroperiods of
>12.5-25.0 percent. Hurricane Matthew made landfall on 8 October 2016 in SC as a category 1
hurricane and contributed to above average rainfall conditions late in the 2016 growing season. Above
average rainfall in 2016 accounted for 41 percent of the 283-day growing season. However, when above
average rainfall data were removed from calculations, all BHW and PCW wells still exhibited wetland
hydroperiods in 2016. Eight BHW and five PCW wells exhibited longest hydroperiods of >12.5-25.0
percent, six BHW wells were >25.0-75.0 percent, and one PCW well was 26.0-12.5 percent of the
growing season in normal and below normal rainfall conditions.
In 2015, a partial monitoring year for the BHW wells, using all rainfall data, 13 BHW wells had longest
hydroperiods of >6.0-12.5 percent and one well (BHW6) had >12.5-25.0 percent; all six Porter Creek
wells exhibited wetland hydroperiods of >12.5-25.0 percent. When above normal 2015 rainfall is
removed from the evaluation, four wells (BHWI, BHW2, BHW4, and BHW9) did not exhibit wetland
hydroperiods (2015 contains BHW data only from June —December). The remaining 11 BHW wells had
longest 2015 hydroperiods during normal or below normal rainfall as follows: one was <6.0 percent,
nine were 26.0-12.5 percent, and one was >12.5-25.0 percent. All the Porter Creek wells maintained
Bonnerton Road NRWHF 5 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

wetland hydroperiods of >12.5-25.0, 0 percent of the growing season for 2015 during normal and below
normal rainfall periods (2015 contains entire year for all PCW wells).
In 2016, using all rainfall data, for the 14 BHW wells, average cumulative days of the year of wetland
hydroperiods was 121 (range of 52 to 170) and for the six PCW wells, it was 64 (range of 42 to 80). In
2016, during normal or below normal rainfall periods, for the 14 BHW wells, average cumulative days of
the year of wetland hydroperiods was 63 (range 44 to 82) and 42.5 (range 35 to 46) for the six PCW
wells.
Bonnerton Road NRWHF 6 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

Literature Cited
Kirby, Robert M. 199S. Soil Survey of Beaufort County, North Carolina. Natural Resources Conservation
Service, United States Department of Agriculture.
Soil Survey Staff. Undated. Natural Resources Conservation Service, United States Department of
Agriculture. Web Soil Survey. Available online at http:/Iwebsoilsurvey.nres.usda.gov/. Accessed
[09/10/2012].
US Army Corps of Engineers. 2010. Regional supplement to the Corps of Engineers wetland delineation
manual: Atlantic and Gulf coastal plain region. Version 2. 1.S Wakeley, R.W. Lichvar, and C.V.
Noble, eds. ERDC/EL TR-10-20, Vicksburg, MS.
US Department of Agriculture, Natural Resources Conservation Service. 2010. Field Indicators of Hydric
Soils in the United States, Version 7.0. L.M. Vasilas, G.W. Hurt, and C.V Noble (eds.) USDA, NRCS,
in cooperation with the National Technical Committee for Hydric Soils.
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2016 and 2015 Hydrology July 2017

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2016 and 2015 Hydrology July 2017

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2016 and 2015 Hydrology July 2017

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2016 and 2015 Hydrology July 2017

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PCS Phosphate Company, Inc.
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APPENDIX A
December 2016 — April 2017 Hydrology Graphs and
Turn ON/OFF Dates of PCS Mine Perimeter Deep Wells
NOTE: Symbols on graphs denote ON/OFF date of each deep well

Bonne ton Road NRNMF Appendix A-1 PCS Phosphate Company, Inc.
2016 and 2016 Hydrology July 2017

BHW1 Water Level
Nov -Dec 2016, PCS Phosphate
30
20
10
n 0
w
L
c -10
-20
w
J
-30
A
3 -40
3
m -so
-60
-70
-B0
N t0 w w 0 t0 w N t0 f0
'Date ®BHW1
• 110B Deep
BHW1 Water Level
Jan -Feb 2017, PCS Phosphate
30
20
10
to 0
d
t
c -10
> -20
W
J
`w -30
ry
3
-40
3
m -50
60
-70
80
`
N th n i6
ai
N
fp O
O aG N
�z
Date
eBHWt
•Porter Rainfall
H1
3
2.5
0.5
3
0.5
0
Bonnerton Road NRWHF Appendix A-2 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW1 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
o
L c
-10
2
_
y
a,
w -20
u�
1.5
w -30
ry
3 -40
rc
3
1
m -50
-60
0.5
-70
80
0
io n in m m o a A m o
Date OBHW1 •PWWRainfall
BHW2 Water Level
Nov -Dec 2016, PCS Phosphate
30
3
20
10
2.5
v
o
b
2
c
-10
m
u
-20
1.5
-30
w
-40
1
m
-50
-60
0.5
ao
-60
0
in i
.- 'Date
OBHW2
•Rainfall
•1108 Deep Well
01109 Deep Well
Bonnerton Road NRWHF Appendix A-3 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW2 Water Level
Jan -Feb 2017, PCs Phosphate
au
20
10
H 0
e
L
c -10
-20
J
`a -30
m
-40
3
m -50
-60
-70
-80
Date
Ill
■Porter Rainfall
•1110
3
2.5
[11M
U
BHW2 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
;n o
L
c -10
2 �
w -20
a,
t
�
J
1.5
-30
q
w -40
C
K
1
m -50
-60
0.5
-70
lu
-80 0
Date eBHW2 •Porter Rainfall
Bonnerton Road NRWHF Appendix A-4 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW3 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
d
0
X>
c
-10
2
N
w
-20
L
u
1.5
`a
-30
N
3
-40
a
3
1
m
-50
-60
0.5
-70
d.0
-80
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M
I�
®BHW3
Date
■Rainfall
♦1108 Deep Well
01109 Deep Well
30
BHW3 Water Level
Jan -Feb 2017, PCs Phosphate
20
3
10
2.5
a,
o
2
c
_
-10
m
-20
w
u
C
1.5
w
-30
A
CW_
-40
R
3
1
ro
-50
-60
0.5
-70
-80
0
r r n n r r n n r r r
r n r
n
m gj a
Z2�V5
N
Date nBHW3
•Porter Rainfall
41110 Deep Wall
Bonnerton Road NRWHF Appendix A-5 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW3 Water Level
Mar- Apr 2017, PCS Phosphate
20
3
10
2.5
R
a
0
c
-10
2
_
H
d
-20
u
c
J
1.5
m
-30
m
3
-40
c_
a
3
1
ro
-50
-B0
0.5
-70
-80
n n n
n n n n n n n n n n
n r n
0
Z;S n ul m o e a3
A is o
Date OBHW3
•Paler Rainfall
BHW4 Water Level
Nov -Dec 2016, PCS Phosphate
30
20
10
m 0
d
L
c -10
i -20
d
J
-30
m
-40
3
m -so
-60
-70
-80
a
�Date nBHW
• 1108
K]
2.5
0.5
D1
Bonnerton Road NRWHF Appendix A-6 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW4 Water Level
Jan -Feb 2017, PCS Phosphate
Ju
20
10
w o
d
L
c -10
> -20
d
J
d -30
A
3 -40
3
m -so
-oo
-70
-80
Date
nBHW4
•Porter Rainfall
111110
3
2.5
0.5
10
BHW4 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
0
d
5 -10
c
2a
-20
m
uC
J
1.5
m -30
4
A
3 -40
C_
1
m -50
-60
0.5
-70
IU
-80 0
Date GBHW4 •Porter Rainfall
Bonnerton Road NRWHF Appendix A-7 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW5 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
T
d
0
-10
2
_
a
-20
r
1.5
m
-30
n
a
H
-40
c
z
3
1
m
-50
-60
0.5
-70
-80
.w .w
0
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U) N w 0 (O w m tO
(O
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c) r in m a C in rn
c� n
.- A a A
a a a
IA3
Date
■Rainfall
1108 Deep Well
01109 Deep Well
Bonnerton Road NRWHF Appendix A-8 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW5 Water Level
Jan -Feb 2017, PCs Phosphate
20
3
10
2.6
i
0
ry
s
2m
c
-
-10
w
-20
d
r
�
1.5
`w
-30
m
n
c
-40
K
N
3
1
m
-50
-so
0.5
-�o
-80
0
a a a
a
Date MBHW5
•porter Rainfall
•1110 Deap Well
BHW5 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
to
2.5
T o
d
-10
2 „
w -20
d
u
c
1.5
`a -30
m
3 -40
c
n
3
1
m -so
-so
0.5
ao
-80
e a a a
Date DBHW5 ■Porter Rainfall
Bonnerton Road NRWHF Appendix A-9 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW6 Water Level
Nov -Dec 2016, PCs Phosphate
30
20
10
7 o
a
L
c -10
> -20
Y
m -30
m
-40
3
m -50
-60
-70
It
-80
•-
®BHW6
■Ra
Date
♦ 1108 Deep Well
O I N
BHW6 Water Level
Jan -Feb 2017, PCS Phosphate
Ju
20
10
F 0
a
L
c -10
> -20
N
J
v -30
m
-40
3
m -so
-60
-70
-80
w�V
Date
OBHWe
•Porter Rainfall ■171C
3
f' 1
0.5
A
3
■JR
0.5
C
Bonnerton Road NRWHF Appendix A-10 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW6 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
a, o
c -10
_
2 m
-20
m
u
c
1.5
a` -30
m
-a0
E
1
m -50
-60
0.5
-70
-80 0
n n n n n n n n n n n n n n n n
^ N a N tp O V 35 N 7B O
Date OBF1W6 •Porter Raln(all
30
BHW7 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
i
2.5
n
d
0
c
-10
2
H
a
>
-zo
L
C
y
1.5
`a
-30
A
m
3
c
-a0
1
s
3
ro
-50
-60
0.5
-70
-60
0
z
fi+ cc �_ N _W
z N N N i;]
17 n
Dale GBHW7
■Rainfall
♦ 1106 Deep Well
01109 Deep Well
Bonnerton Road NRWHF Appendix A-11 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW7 Water Level
Jan -Feb 2017, PCs Phosphate
JV
20
10
0
d
t
c -10
-20
d
J
`d -30
A
3 -a0
i
m -50
-60
-70
-80
Date
OBHW7
•Porter Rainfall
0111C
3
2.5
0.5
U
BHW7 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
m 0
d
c -10
2 a
w -20
d
C
d
J
1.5
rd` -30
-40
c
�
3
1
m -50
-60
0.5
-70
as
0
Date 1381-117 •Porter Rainfall
Bonnerton Road NRWHF Appendix A-12 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW8 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
N
u
0
c
-10
2
N
d
-20
1.5
`w
-30
m
m
-40
c
1
ro
-50
-60
0.5
-70
-60
0
rn m M n in ai
N N A A
r=
5 5 5
a a a
Date -BtiWB
■Rainfall
•1106 Deep Well
01109 Deep Well
30
BHW8 Water Level
Jan -Feb 2017, PCS Phosphate
20
3
10
2.5
w
0
a
t
2
c
_
-10
H
-20
m
u
c
1.5
m
-30
N
3
-40
3
1
m
-50
-60
0.5
ao
so
0
n r n n r r r n r r r
r r r
r
CAS I� O_
'V eD
N a
f�J
Z;j N
N
N
N
Date -BHW8
•Paler Rainfall
a1110 Deep Well
Bonnerton Road NRWHF Appendix A-13 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW8 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
7 0
m
c -10
2 H
-20
Uc
1.5
e` -30
m
c
m -40
3
1
ro -50
-60
0.5
-70
-80 0
rn m c\ m o a m l m o
N N N N M
Date neewe •Porter Rainfall
Bonnerton Road NRWHF Appendix A-14 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW9 Water Level
Nov -Dee 2016, PCS Phosphate
30
20
10
1 0
d
L
c -10
> -20
d
J
m -30
N
-40
m -50
-60
-70
-80
m BHW
Date A1108
BHW9 Water Level
Jan -Feb 2017, PCS Phosphate
Jv
20
10
'm 0
d
L
c -10
> -20
d
J
d -30
A
w -40
3
m -so
-60
-70
-80
n r r r r n_
Date
OBHW9
■Porter Rainfall
a111C
3
0.5
C
3
2.5
0.5
U
Bonnerton Road NRWHF Appendix A-15 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW9 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
u 0
c -10
2
m -20
d
L
c
1.5
d -30
C
A
m .40
K
3
1
m -so
-60
0.5
-70
-8p 0
iB l5 ' �V�V5 a tD O i;l t0 O
Date GBM9 •Porter Rainfall
BHW10 Water Level
Nov -Dec 2016, PCS Phosphate
30
3
20
10
2.5
d 0
c
2
-10
n
d -20
d
t
1.5
d -30
m
c
0 -40
1
_ -50
m
-60
0.5
-70
-80
0
DBHWlo
■Rainfall
Dale •1108 Deep Well
e1109 Deep Well
Bonnerton Road NRWHF Appendix A-16 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW10 Water Level
Jan -Feb 2017, PCs Phosphate
20
3
10
2.5
x
0
❑
d
2
c
-10
N
e
-20
d
t
d
1.5
u
-30
q
C
e
-40
1 s
_
-50
m
so
0.5
-70
-80
0
- r_ n r r
r r r_
r
N m CJ f� N ai N t0
V W a
a
_O
.�- � >- � � N N N N N
� •-- N
Date 9BHW10
MPOner Rainfall
■1110Deep Well
BHW10 Water Level
Mar- Apr 2017, PCs Phosphate
30
20
3
10
2.5
ru 0
d
c -10
2 h
d -20
d
uc
1.5
v -30
m
c-40
c
a0
1
_ -50
CO
-60
0.5
-70
-80 0
�n rn c3 iz o
of m co m a a-, 0
M M c>
M n a a a
� M chi o v o
Date nBHW10 •PMer Ralnfell
Bonnerton Road NRWHF Appendix A-17 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW11 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
ie
0
ri
ar
2
c
-10
a
>
-zo
W
L
C
d
J
1.5
d
-30
m
`c
io
3
-a0
1
_
-50
m
-60
0.5
ao
-0
Q
l N rn M �z �_ N as
M
biz
'- 'Date
oBHWtt
■Rainfall
•1108 Deep Well
01109 Deep Well
BHW11 Water Level
Jan -Feb 2017, PCS Phosphate
30
20
10
n 0
❑
v
t
c -10
> -20
a
J
`a .30
ry
3
-40
_ -50
m
-60
-70
-60
Date
nerfWn
•Porter Rainfall
.fl
3
2.5
0.5
AI
Bonnerton Road NRWHF Appendix A-18 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW11 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
m 0
d
c -10
2 m
d -20
d
L
C
1.5
w -30
W
ry
3 -a0
c
_ -50
1
m
-60
0.5
a0
IU
_80 0
N N N
Date eefnan •Porter Rainfall
30
BHW12 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
H
m
0
c
-10
2
h
m
u
-20
L
c
1.5
d
-30
N
-a0
a
N
1
_
-50
m
-60
0.5
-70
-80
0
Date o11 12
■RaiMall
♦1708 Deep Well
01109 Deep Well
Bonnerton Road NRWHF Appendix A-19 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW12 Water Level
Jan -Feb 2017, PCS Phosphate
20
10
w 0
d
L
c -10
> -20
d
J
w -30
A
3 -a0
N
2 50
m
-60
-70
-a0
n n n n n n n
n n
n n
n n n
n
Date
GBHW12
•Porter Rainfall
H71f
3
2.5
0.5
ID
Bonnerton Road NRWHF Appendix A-20 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW12 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
N 0
d
c -10
2 h
d -20
e
uC
1.5
w -30
3
a -40
1 C
_ -50
m
-60
0.5
-70
lu
-80 0
n n n n n n n n n n n n n n n n
Date OB~2 •Porter Rainfall
BHW13 Water Level
Nov -Dec 2016, PCS Phosphate
30
20
3
10
2.5
m
0
e
2
c
_
-10
m
�
-20
s
�
1.5
`a
-30
m
3
�
-40
1
_
-50
m
-60
0.5
a0
-80
0
F F F F2 F
.-
cc
n
aBFM/13
Date
■Rainfall
♦1108 Deep Well
01109 Deep Well
Bonnerton Road NRWHF Appendix A-21 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW13 Water Level
Jan -Feb 2017, PCS Phosphate
20
3
to
2.5
m
0
d
2
E
-10
n
�
'z0
N
U
p
1.5
d
-30
A
`c
Yo
n
40
C
1
_
-50
m
-60
0.5
-70
-80
if
0
N
Date OBHW13
■Porter Rainfall
11111110Daep Wall
BHW13 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
a 0
c -10
2 „
d -zo
d
E
1.5
d -30
a
q
-40
C
K
1
_ '50
m
-50
0.5
-70
-80 0
N o% ' N a N_ z O V W r0 O
Date 136HW13 •Porter Ralnfell
Bonnerton Road NRWHF Appendix A-22 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

30
BHW14 Water Level
Nov -Dec 2016, PCS Phosphate
20
3
10
2.5
m
d
0
c
-10
2
^y
d
-20
U
J
1.5
a`
-30
n
F
v
-40
C
rc
1
_
-50
m
-60
0.5
-70
eo
0
l7 h
oBHW14
Date
■Rainfall
:110B Deep Well
01109 Deep Well
BHW14 Water Level
Jan -Feb 2017, PCS Phosphate
JV
20
10
n 0
d
L
c -10
! -20
d
J
4` -30
A
3 -40
a
_ -50
m
-60
-70
-B0
Date
CBHW14
•Porter Rainfall Mill(
3
2.5
0.5
n
Bonnerton Road NRWHF Appendix A-23 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017

BHW14 Water Level
Mar- Apr 2017, PCS Phosphate
30
20
3
10
2.5
u 0
L
E -10
2
-20
N
u
J
1.5
d -30
w
3
c
-40
z
_ -50
1
m
-60
0.5
-70
80
n n 0
n n n n n n n n n n n n r n'
v a a a e e
Data ®griwiy importer Rainfall
Bonnerton Road NRWHF Appendix A-24 PCS Phosphate Company, Inc.
2016 and 2015 Hydrology July 2017