20210113 - ADI Received O&M 011221

OPERATION AND MAINTENANCE PLAN
SAND MINE DEWATERING AND WATER LEVEL CONTROL STRUCTURE
NORMAN SAND PIT, COLUMBIA, NC
Operator: Norman Sand Company, 297 Colonial Beach Road, Columbia, NC 27925
Manager: Thomas Dwayne Norman
Job Location: 297 Colonial Beach Road, Columbia, NC 27925
County: Tyrrell County
Prepared by: Ken Elliott, consulting
Date: January 12, 2021
This plan defines responsibilities for operating, inspecting, and maintaining equipment and structures
used for constructing and dewatering the Norman Sand Pit, mining permit #89-07, safely, and that
dewatering will not degrade or negatively impact any wetlands or waters of the state.
Description and Operation of the Norman Sand Pit:
The Norman Sand Pit is an existing 9.04-acre sand mine excavation operated by Thomas Dwayne Norman,
in a 12.60-acre permit area located at 297 Colonial Beach Road, five miles northeast of Columbia, NC, in
Tyrrell County. The permit area is on high sandy land and has been actively mined since 1999 by Norman
Sand Company. The mine site parcel is owned by Thomas Dwayne Norman, 297 Colonial Beach Road,
Columbia, NC 27925.
Currently Mr. Norman is applying to the NCDEQ Division of Energy, Mineral and Land Resources to modify
the current mining permit#89-07 to increase the excavation area of the Norman Sand Pit from 9.04 acres
to 12.02 acres,which will increase the permitted area from 12.60 acres to 16.12 acres. No other alteration
of the current mining process or mine site will occur.
Norman Sand Company was last re-issued an NPDES General permit to dewater the Norman Sand Pit on
October 1, 2015. Operator has been successfully dewatering the excavation and discharging the mine
dewatering wastewater since approximately 2004.
Sand Mine Dewatering:
It is necessary to dewater the Norman Sand Pit excavation as it is being excavated to allow the excavating
equipment to enter the excavated area to remove the sand safely and efficiently from the pond bottom.
This allows for full permitted depth of excavation and proper reclamation of the edges of the pond. It is
the intention of Norman Sand to only dewater the excavation as needed, which does not entail full-time
dewatering.
For excavation purposes, dewatering at Norman Sand Pit occurs roughly every 30-45 days which allows
excavating equipment to remove approximately 150-250 loads of sand up to ground level where it is
stockpiled for later use. When the stockpile is depleted from usage, the excavation area is again
dewatered, and another quantity of sand is excavated.

Mine dewatering wastewater must be treated before release to the waters of the State. Use of a
sedimentation pond separate from the excavated mine is a traditional and effective means to remove
sediment from wastewater generated during mine dewatering operations.
Norman Sand Pit currently utilizes a 0.48-acre sediment pond for treatment of mine dewatering
wastewater. The sediment pond has been in operation since at least 2005. The pond discharges fresh
water into a ditch leading 0.75-mile to Bull Bay and Albemarle Sound.
Dewatering Overflow Discharge:
The Norman Sand Pit sediment pond has a permanently buried pvc overflow pipe at the south end of the
pond,which discharges through a single riprap protected discharge point into an existing ditch. The ditch
drains southward 600 feet through a PFO1Bd wetland forest (non-tidal Palustrine forested seasonally
saturated partially drained)before turning eastward then northward and westward for 0.5 mile,wrapping
around the Norman Sand Pit excavation area,before turning northward to drain 0.15-mile through ditches
and canals to Bull Bay and Albemarle Sound.
Discharge water also flows through a second drainage ditch starting 600 feet south of the sediment pond.
This ditch leaves the wetland forest flowing westward through field ditches and canals for 0.7 mile and
then turns northward to flow 0.9 mile to Albemarle Sound.
Sediment pond discharge path is shown on attached map.
Dewatering Procedure:
The operator has installed two 6-inch electric dewatering pumps on the south side of the excavation area,
1050 feet from the closest residence not owned by the mine operator,which discharge into the north end
of the sediment pond. Estimated maximum flow from the two pumps is 2,000 gallons/hour, operating
12 hours per day, 0.024 mgd. Standard procedure of the operator is to drop the water level in the main
pond approximately 20-25 feet below normal ground level when needed.
Time and distance allows all sedimentation to occur in the sediment pond to acceptable levels before the
overflow water reaches outfall and then the waters of the State. Water must travel a minimum of 250
feet to reach the overflow point in the 0.48-acre sediment pond. There is a minimum 1.0-ft of freeboard
between the water surface in the sediment pond and the top of the sediment pond bank.
Stormwater drainage is unable to enter the sediment area and damage the sediment pond rates, due to
the land elevation around the pond. All stormwater from the permitted processing areas is contained
inside the mining activity area by berms and drainpipes and is directed for positive drainage into the
current in-use excavated pond.
Groundwater Control:
Sediment pond overflow discharge of fresh water into the adjacent partially-drained wetland forest on

the south side of the excavation helps hydrate the groundwater level in the forest and maintain hydration
of the wetland foliage. Water levels in the forest ponds and creeks and in the creek leaving the sediment
pond are easily accessible and are observed regularly during periods of dewatering activity at the sand
pit. Flow of discharge water from the sediment pond can be viewed at any time as it passes through the
creek and canal which wraps around the excavation area on its drainage path to Albemarle Sound. Any
stoppage of flow during dewatering activity is immediately investigated to prevent flooding of adjacent
lands. In addition, a second drainage path to Albemarle Sound guarantees a clear discharge route which
prevents flooding.
Norman Sand has been dewatering and discharging mine dewatering wastewater since approximately
2005 with no problems or complaints from adjacent landowners. The closest residence not owned by the
landowner is located over 900 feet from excavation edge, and active groundwater wells in the area have
not been affected.
Sedimentation and Erosion Control
The operator maintains a 50-ft wide unexcavated buffer containing an access path between the
sediment pond and the southern, drained Palustrine forest.This buffer is maintained by the operator
with grass, shrub, and tree ground cover.
In addition,there is a 25-ft wide unexcavated buffer(may contain roadways, stockpiles, and sediment&
erosion control devices) around the entire excavation area, between the excavation and the permit
boundary.
All erosion and sedimentation remains inside of the permit area. The operator maintains an existing 10-
ft wide x 2-ft tall grass-covered sand berm around the perimeter of the current affected area of the
excavation during all phases of operation. During mining operations and dewatering, most of the water
leaving the excavation remains inside of the permit area and will only overflow through the sediment
pond occasionally. The sediment pond is a minimum 5 feet deep, and there is a sand layer below the
bottom of the area. The porosity of the soil under the sediment pond allows most of the water pumped
into the pond from dewatering to seep back into the ground naturally. Any excess water overflowing
from the sediment pond flows downstream 0.75 mile to the Albemarle Sound.
When final excavation of the ponds is complete, dewatering will be discontinued, and pumps shut down
& removed. Groundwater will refill the excavation to normal seasonal high groundwater level, converting
the excavation to a 12.02-acre pond. The operator will establish full groundcover on the pond's 3:1 slopes
as well as all affected areas inside the permit area.
Maintaining the Sediment Pond Overflow Control Structure,Settlement Pond and Ditches
Inspections and maintenance are required to obtain the intended function of safely dewatering the sand
mine, and to maintain the life of any adjacent wetlands or waters of the State. Items to inspect and
maintain during the anticipated 10-year life of the mine dewatering permit are:

• Inspect the water control structures regularly, especially following heavy rains and runoff, or
during periods of operation of the structure.
• Remove accumulated debris from the overflow control structure.
• Inspect the structure for excessive settlement or seepage.
• Inspect all components of the structure, including appurtenances, and repair or replace any
damaged items as needed.
• Inspect embankments, berms and appurtenant structures, and repair as needed.
• Repair any damage to vegetated areas or berms with compacted earth fill, reshaping, sodding,
reseeding, and mulching as needed.
• Inspect riprap outlet stabilization structures in ditches regularly, replace dislodged rock, as
necessary.
• Promptly repair all leaks in delivery facilities by replacing valves,fittings,gaskets, and worn or
damaged parts.
• Maintain all screens, filters,valves,timers, and other electrical and mechanical equipment in
good operating condition,following manufacturer's recommendations
Monitoring the Process and Effects of Dewatering
Analytical and qualitative monitoring of mine dewatering wastewater are performed in accordance with
the NCG020000 permit, as follows:
• All ponds in the Norman Sand Pit permit area are inspected daily by the operator to identify any
abnormal conditions.
• All berms and erosion control and sedimentation control structures are inspected for damages
monthly and within 24 hours after every storm event greater than 1.5 inches, and all structures
are repaired immediately.
• Special inspections are conducted immediately following severe storms,vandalism, and other
significant events.
• Dewatering process is inspected daily during periods of dewatering the excavation.
• Overflow of wastewater process is inspected daily during periods of dewatering the excavation.
• Outflow of dewatering wastewater is monitored quarterly at the overflow exit stabilization
structure and is tested for pH, settleable solids,turbidity, and total flow. Samples are collected
and tested onsite for pH, and the remainder are tested for the remaining parameters by a North
Carolina certified lab.
• Rain gauge data is collected by monitoring rain gauge data monthly and after each rain event.
Records
Data will be collected as follows:
• Data is collected from samples taken from the wastewater point source discharge in operation
at the time.

• Point source discharge data: data from the site taken quarterly, date &time,general weather
conditions, pH of sample, status of process at point source, inlet, or outlet, other DWQ required
data.
• Visual monitoring of adjacent wetlands and farmland for potential dehydration during mining or
dewatering activities takes place weekly. Solutions to any degradation caused by any mining
activity will include alteration of dewatering process. DWQ will be consulted as needed;
alterations to process will be recorded.
• Elliott Consulting maintains the following records in a permanent file at the Elliott Consulting
office at PO Box 112, 202 Elliott Road,Aydlett, NC 27916: a record of all significant actions
taken; as-built drawings; permits; analytical results from sampling; and related material. Copies
of all inspections, monitoring reports and lab analyses shall be provided to NCDWQ on a regular
basis and as requested.
BMP Conditions
• The permittee utilizes best management practices to ensure that dewatering the Norman Sand
Pit will not degrade or negatively impact any wetlands or waters of the State. BMP's include:
o Permanent sediment pond outlet structure with riprap outlet protection located at edge
of pond for ease of maintenance.
o All berms and erosion control and sedimentation control structures are inspected for
damages monthly and within 24 hours after every storm event greater than 1.5 inches,
and all structures will be repaired immediately.
o Sediment pond outlet ditch has a rock lining or riprap stone layer to prevent erosion,
scour or sloughing of embankment
• The permittee shall obtain authorization from the Director of the NCDEMLR and the Stormwater
Program chief prior to utilizing any chemical flocculants at the Norman Sand Pit.
Signed,
Ken Elliott
for Thomas Dwayne Norman, manager
Norman Sand Company
January 13, 2021

yf MINE MAP
I NIF PERMIT MODIFICATION OF
_____ 1 fOHKIRKMAN R NORMAN PERMIT 989 07
NIF g5 + ~ T OPERATOR:
NIF 1 MILTON PHELPS • 1 `~ T.DWAYNE NORMAN
SOUTH FORK f- NEW EXCAVAREAAWED 1 ti 297 COLONIAL HEACH ROAD
FARMS,INC- + __ - -1 COLUMBIA,NC 27925
1 _ _ •1� TYRRELL COUNTY
P�RNE �
F T1pTi SOY MAP BY ELLIOTT CONSULTING
FovalEREp+IA % 1 �,T APRIL 9-2020
1 SCALE:1 1N=12a FT
NIF 1"� FARM I
T DWAYNE 1 BIJILOG 1•t
NORMAN � w� 1 I
1 jS
WF A
r T DWAYNE •1 t
! NORMAN
� t
c' NORMAN SAND PIT h l
\, 12-02 ACRE EXCAVATfON
1
AVG DEPTH 30 FT NIP
Etln,. �ti MAX DEPTH 35 FT rr - TWAYNE
NORMAN
"�•'?-- �•"� 1>I, � RESIDENCE S
1 t /
s � �
NIF
SEDIMENT T T DWAYNE
GAUAC f/f NORMAN
1 CURRENT PERMITTED ACREAGE Npg 1 l r
'4 EXCAVATION-0.04 AC ,1 NEW EKCAV
1 SED I ME NT POND-J.48 AC \ AREAADDED } mow T
1 ROADS&PROCESSING-3.08 ACC
TOTAL PERMIT-12.80 AC �1' sr' °�� WF
7GWAYNE $ I �,
f
� PRO POSED PER MI3-TEI]ACREAGE NORMAN THISMAP35NQTACERTIFIEd
EXCAVATION-12.02 AC 1 i I °a°R'H6 Fwo wfl" ,/ SURVEYAND HAS NOT BEEN REVIEWED
�� SY A LOCAL GOVERNMENT AGE NCY FOR
SEDIMENT POND-0.48 AC 1 / C OMPL4AN C E WITH ANY AP PLICABLE
1 STOCKPILES&BERMS-0.51 AC LAND DEVELOPMENT REGULATIONS.
ROADS&PROCESSING-2.00 AC �..! r II
1. UNEXCAVATED BUFFERS-1.11 AC frf/ r
NIF 1: TOTAL PERMIT-16.12AC +r 1 yo u % 72a 0 so tea 240
NORTH BAY �.. - N7F I Ir J+ I.
FARMS,LLC �, I + /
ND3iTH BAY ROAD I. y (IN FEET)
FARMS,LLC I 1 ;°sB lzm l / 1Mrh=120h
-1 I 1 1 i54a Lr3a'w %
+rf
PAGE 1 OF 2

BULL BAY 1 ALBEMAR LE SOUND
11 l ;,
ORMAN
SAND PIT . 11
G•,•�. 11 �,•+ SEDIMENT n 11 4
POND
gA.►1'* _ �{ li� PRIMARY
DISCHARGE
-A Ilv�• ROUTE v• - .
IAJ ` SECONDARY ..f�'.. .A r' •�:
DISCHARGE
ROUTE -".-•:...� :;5: :..
3771
r _
f '
Y
a . ,