20080868 Ver 2_Stratigraphy Study Addendum_20150526

A
ZR 4709 COLLEGE ACRES DRIVE
SUITE 2
I N C O R P O RATED WILMINGTON, NORTH CAROLINA 28403 -1725
ENVIRONMENTAL CONSULTANTS TEL [phone]
FAX [phone]
To: Mr. Jeff Furness From: Samuel Cooper czrwilm @czr - inc.com
Senior Scientist
PCS Phosphate, Inc.
Post Office Box 48
Aurora, North Carolina 27806
Date: 26 May 2015
4709 College Acres Dr.
Wilmington, NC 28403
Background
At Jeff Furness' request CZR provides this scope and cost estimate to install and monitor 14
wells in the Bonnerton Tract of the Bonnerton Non - Riverine Wet Hardwood Forest in and near
the upper headwaters of Porter Creek, Beaufort County, NC (see attached Figure 1).
Scope of Work
This scope includes costs for labor and equipment for two biologists to install 14 shallow -water
monitoring wells in the upper headwaters of Porter Creek. Biologists will navigate to the approximate
locations as shown in Figure 1 using GPS coordinates. Actual well locations may be moved to insure they
are representative of site conditions (not in a depression or on a knoll). For any wells moved from the map
location, a GPS will be used to collection and document the well location. An approximate 5 -foot long 2-
inch PVCwell screen (10 slot) will be installed with about 35 inches below the ground surface and back -
filled with filter sand. An In -Situ semi - continuous electronic monitor (LevelTroll) will be placed within
each well screen to collect water level data recorded every 1.5 hours. The recorder is suspended in the
screen to record water within 20 inches of the ground surface (hydrology for wetlands is documented
within 12 inches of the surface during the growing season). Metal fence posts will be installed around each
monitoring site and barbed wire will be wrapped around the posts to protect wells from bear damage.
Monitoring wells will be inspected once a month to download data and perform QA/QC readings (manual
measurements within the wells screen). Well data will be used document wetland hydroperiods and be
compared with rain events and monthly rainfall. This monitoring will continue throughout the mine
development, mining, and reclamation phases of the Bonnerton Non- Riverine Wet Hardwood Forest
targeted area.
Desired Outcomes
- Procurement and fabrication of equipment;
- Installation of 14 monitoring wells and bear exclosures in mid to late June 2015;
- Begin water level monitoring in June 2015 and download data monthly;
- Review and management of water level data monthly;
- Prepare data spreadsheets to document water levels and compare to rainfall;
- Prepare annual summary of monitoring and report wetland hydroperiods relative to natural and
atypical rainfall periods.
Period of Performance for this cost estimate
June 2015 — January 2016
Attachments
Figure 1 — Map of proposed well monitoring locations
Cost estimate — budget breakdown
2151 Alternate Al South - SUITE 2000 - JUPITER, FLORIDA 33477 -3902
TEL [phone] - FAX [phone] - czrinc @czr- inc.com - www.CZRINC,com

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LEGEND
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,, MODIFIED ALT L PERMIT 1 BOUNDARY
SEMI- CONTINUOUS WELL
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4 SEMI- CONTINUOUS WELL
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OBSERVATIONAL FLOW
DATA COLLECTED
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-low MONITORING WELL
WETLAND HARDWOOD FOREST
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Bonnerton NRWHF
Hydrology Monitoring Sites
PCS PHOSPHATE MINE CONTINUATION
SOURCE: Scale: As shown Drawn by: TLJ
1,000 0 1,000 Feet • Dt 05/19/15 e +74547 /8 NNERTON NRWHF MON WELLS
ae
AERIALS PROVIDED BY: PCS PHOSPHATE COMPANY, INC. PORTER_CREEK.OWG
1530 NC HIGHWAY 306 SOUTH, AURORA, NORTH
CAROLINA 27806, 252 - 322 -5121, DATE: 2014 Revision:
Approved by: JPS 5 -13 -09 Figure 1