SW7000718_COMPLIANCE_20120522

NORTH CAROLINA
Department of Environmental Qua

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
sw 706 %l k
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYM M DD

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Land Resources
James D. Simons, PG, PE
Director and State Geologist
Land Quality Section
May 22, 2012
Beverly Eaves Perdue, Governor
Dee Freeman, Secretary
NOTICE OF VIOLATIONS OF THE
SEDIMENTATION POLLUTION CONTROL ACT
CERTIFIED MAIL RECEIVED
RETURN :RECEIPT REQUESTED
7011 0110 0000 9948 4317
MAY 2 2 2012,
H/S New Bern Outnarcels, LLC
Post Office Box 204227
Augusta, Georgia 30917
DWQ-WARO
RE: Project Name: Twin Rivers Mall Stormwater Relocation
Project ID: CRAVE-2012-010
Location: US Hwy 17 County: Craven
River Basin: Neuse Last Approval Date: December 14, 2011
Dear Sir or Madam:
On May 15, 2012, personnel of this office inspected a project located on the northwestern corner of
the intesection of US Highway 17 and US Highway 70, in Craven County, North Carolina. This
inspection was performed to determine compliance with the North Carolina Sedimentation Pollution
Control Act (Act) of 1973, The inspection revealed a land -disturbing activity of approximately 11,4
acres being conducted.
It is our understanding that you and/or your firm are responsible for this land -disturbing activity. The
purpose of this letter is to inform you that this activity was found to be in violation of the Act, G. S.
t 13A-50 to 66, Title 15A, North Carolina Administrative Code (NCAC), Chapter 4. If you feel that
you are not responsible for the following violations, please notify this office immediately.
The violations found are:
a. Failure to conduct a land -disturbing activity in accordance with the approved erosion and
sedimentation control plan. G.S. 113A-57(5).
The inspection revealed that the approved erosion and sedimentation control plan has not
been properly implemented -The approved "plan -indicates -the existing-stormwater pond will
remain -in place -and _ functioning until all new construction is complete.
Washington Regional Office
943 Washington Square Mall, Washington, North Carolina 27889 Phone:[phone] Fax [phone]
Internet hth7lportal.ncdenr.org/webAnland-quality
An Equal Opportunity/Affirmative Action Employer -50%recycled/10% Post Consumer Paper

Certified Mail
H/S New Bern Outparcels, LLC
ATTK Mr. John Gibson, Managing Partner
May 22, 2012
Page 2
b. Failure when a land -disturbing activity that will disturb more than one acre is undertaken on a
tract, to install sedimentation and erosion control devices sufficient to retain the sediment
generated by the land -disturbing activity within the boundaries ofthe tract during construction
upon and development of the tract. G.S. 113A-57(3).
Ve ` A
C. Failure o takee alRre sonable measures to protect all public and private property from damage
by such land -disturbing activities. 15A NCAC 4B.0105.
r,7r � c
d. Failure to msall'and maintain all temporary and permanent erosion and sedimentation control
�� there undyer,(dbrm� brafter the development of a site. 15A NCAC 4B.0113.
The inspection revealed that adequate and appropriate erosion and sedimentation control
measures have not been installed in critical areas throughout the site, which has resulted -ink
sediment leaving the site through the triple culverts under Hwy 70.E
To correct these violations, you must, WITHIN 15 DAYS OF RECEIPT OF THIS NOTICE OF
VIOLATIONS:
Cease filling-the=existingstormwater pond until -all new construction is complete as indicated
,on -the plan approved by this office on December 14, 2011
2. In accordance with the approved plan properly install, reinstall, and/or maintain erosion and
sedimentation control measures and/or devices throughout the site sufficient to retain
sediment from entering a -natural watercourse or other -properties.,
The violations cited herein may be referred to the Director of the Division of Land Resources
(Director) for appropriate enforcement action, including civil penalty assessments for an initial one -
day violation and/or a continuing violation. The penalty for an initial one -day violation may be
assessed in an amount not to exceed $5,000.00. The Division of Land Resources is not required to
provide a time period for compliance before assessing an initial penalty for the violations cited herein.
Please be advised that a civil penalty may be assessed for the initial day of violations regardless of
whether the violations are corrected within the time period set out below.
In addition, if the violations cited herein are not corrected WITHIN 15 DAYS OF RECEIPT OF
THIS NOTICE OF VIOLATIONS this office may request that the Director take appropriate legal
action against you for continuing violations pursuant to NCGS I I3A-61.1 and 113A-64. A penalty
may be assessed from the date of the violation, pursuant to NCGS 113A-64(a)(1), and for each day of
a continuing violation in an amount not to exceed $5,000.00 per day.
Please be advised that any new land -disturbing activity associated with this project should not begin
until the area presently disturbed is brought into compliance with the Act. When corrective actions

Certified Mail
WS New Bern Outparcels, LLC
ATTN: Mr. John Gibson, Managing Partner
May 22, 2012
Page 3
are complete, you should notify this office so that work can be inspected. You should not assume
that the project is in compliance with the Act until we have notified you. After installation, all erosion
control measures must be maintained in proper working order until the site is completely stabilized.
We solicit your cooperation, and would like to avoid taking further enforcement action. At the same
time, it is your responsibility to understand and comply with the requirements of the Act. Copies of
the relevant statute and administrative rules may be examined at this office or will be sent to you upon
request. Should you have questions concerning this notice or the requirements of the Act please
contact either Allison Ward or me at your earliest convenience.
Patrick H. McClain, PE
Regional Engineer
PHM:aw
Enclosures: Sedimentation Inspection Report
cc: Mr. Gray Hauser, PE, State Sedimentation Specialist
Mr. Alton Hodge, Regional Water Quality Supervisor
Mr. Roy Brownlow, Division of Coastal Management — Morehead
LQ Files

�0 c wnrE,go` ®� /�
North Carolina Division of Water Quality
oNPDES Stormwater Discharge Permit NCDLEN.,R
for Construction Activities
Cuver Sheet lur NC0010000 noZod Auqual 2, 2011
What is this permit?
This is your General Stormwater Permit for
Construction Activities, developed to meet federal
National Pollutant Discharge Elimination System
(NPDES) requirements. It is separate from your
Erosion and Sedimentation Control (E&SC) Plan,
which has been a North Carolina requirement for
over 35 years.
Federal regulations adopted by the U.S.
Environmental Protection Agency (EPA) and North
Carolina Division of Water Quality (DWO) require an
NPDES permit for your project. The EPA has
delegated DWO authority to administer the NPDES
program in North Carolina. Two divisions of the
Department of Environment and Natural Resources
are responsible for different parts of the federal
permitting requirements.
They E&SC plan approved by'the Division of Land
Resources (or a delegated local program) contains
the core erosion control requirements for your
project. The. NPDES General Permit issued by
DWO contains additional requirements related to a
broader range of water quality issues. These
permits are related, but separate. Both contain
conditions your project site must meet.
What,does this permit require me to do?
You should read and become
familiar with the provisions of this
permit. Below is a list of the
major requirements, with
indications where those differ
from the previous Construction
General Permit.
EROSION AND
SEDIMENT CONTROL PLAN
You must implement the Erosion
and Sedimentation Control Plan
approved for your project by the
Division of Land Resources or by
an approved local program.
Adherence to that E&SC Plan is
an enforceable component of the
Stormwater Permit.
Are there new requirements
in this permit?
This General Permit reflects changes made in the
federal regulations effective February 1, 2010, that
regulate discharges from construction sites. The
federal regulations resulted from litigation decisions
that mandated construction activities over a certain
size must contain additional specifications to reduce
the amount of wastes and sediment loading that
reach the nation's waters.
The Division of Water Quality and the Division of
Land Resources established the Construction
General Permit Technical Advisory Group (CTAG)
to guide the development of this NPDES permit. A
draft permit was available for public review in May
2011, and the final permit became effective on
August 3, 2011.
The most notable change in the new permit is a
requirement that ground, stabilization, such as wheat
straw application, be applied within 14 days from the
last land -disturbing activity. For steep slopes, that
area must be stabilized within 7 days. Please see
page 2 of this document for details.
Your E&SC plan will identify
areas where the more stringent
7 and 14 day ground
stabilization requirements
apply. See "New Ground
Stabilization Requirements" on
page 2.
MONITORING & INSPECTIONS
► You must keep a rain gauge
on site.
► Dedicated demolition and
other waste areas and earthen
material stockpiles must be
located at least 50' from storm
drains or streams unless no
alternative is feasible (new
requirement).
► You must inspect all E&SC
measures at least once a week
and within 24 hours after any
storm event greater than a half
inch (during a 24-hour period).
You must take immediate
corrective action for any device
failure.
► You must inspect all outlets
where stormwaier runoff leaves
your site and evaluate the effect
on nearby streams or wetlands.
Corrective action must be taken if
sediment is deposited off site or
into a stream or wetland, or
causes a visible increase in
turbidity (cloudiness) of any
waterbody.
(0ontinued an reverse side)

u

NPDES Stormwater Discharge Permit for Construction Activities _ . _ Revised August 2, 2011
Permit Requirements (mminued)
► You must keep records of
these inspections and any
corrective actions taken.
OPERATION & MAINTENANCE
You must provide the operation
and maintenance necessary to
maintain optimal performance of
stormwater controls. This means
take corrective action if erosion
and sediment control facilities are
not operating property! Operation
and maintenance includes, but is
not limited to:
• Regularly cleaning out
sedimentation basins.
• Stabilizing eroded banks or
spillway structures.
Repairing/clearing out inlets
and outlets.
• Repairing piping, seepage
and mechanical damage.
Repairing silt fence damage.
Regular inspections are a chance
to check impacts to nearby
waters. If you observe sediment
that has deposited in a stream
or wetland, you must notify the
Division of Water Quality
regional office within 24 hours
and provide written notice
within 5 days (see # 3 on page 6
of the General Permit). Please
send a copy of this
correspondence to the Division of
Land Resources (DLR).
NON-COMPLIANCE & FINES
Take compliance seriously!
Projects that violate Stormwater
Permit conditions and/or have
unauthorized water quality
impacts are subject to fines. Civil
penalties of up to $25,000.00
per day for each violation may
be assessed.
Who inspects me for what?
DWO coordinates with DLR's
Land Quality Section to ensure
compliance with state rules and
regulations governing
construction activities. That
means your project is subject to
enforcement by both divisions. In
general, Land Quality staff will
inspect your site on a regular
basis. DWQ staff may also do
inspections. The inspections may
be routine in nature, or, the result
of public complaints.
Do 1 need to submit a Notice
of Intent to have coverage
under this permit?
No. Once your EBSC Plan is
approved, your site is
automatically covered under this
permit. You do not need to
submit a Notice of Intent for a
Certificate of Coverage.
NEW STABILIZATION:TIMEFRAMES
Site Area Description
Stabilization
Timeframe Exceptions
OPerimeter dikes, swales, ditches and slopes
7 days
None
High Quality Water (HOW) Zones
7 days
None
Slopes steeper than 3:1
7 days
If slopes are 10' or less in length and are not
steeper than 2:1, 14 days are allowed.
p Slopes 3:1 or flatter
14 days
7 days for slopes greater than 50' in length.
r, All other areas with slopes flatter than 4:1
14 days
None, except for perimeters and HOW Zones.
Do you need more information?
w�t�,gpG NC Stormwater Permilling
htt2//porlal.ncdenr.ora/web/wg/ws/su
o2oF
y�C NCGO1 Permit Information
httpl/portal.ncdenr.org/web/watws/su/construction
Map of Regional Offices
httpl/portal.ncdenr.org/web/wg/home
Still have questions? Call the DWO Regional Office nearest your project's location:
Asheville 011ice [phone]
Washington Office [phone]
Fayetteville Office [phone]
Wilmington Office [phone]
Mooresville Olfice [phone]
Winston-Salem Office [phone]
Raleigh Office [phone]
Central Office [phone]

Samir
From:
Vinson, Scott
Sent:
Thursday, March 01, 2012 3:44 PM
To:
[e-mail]
Cc:
Dumpor, Samir
Subject:
Twin Rivers Mall Stormwater modification
Steve,
Samir will be out of the office until Monday, but we wanted to go ahead and let you know that the Division is good with
your proposal and that the only thing we would like added would be the implementation of sediment bags to be used
during the pumping process to help control turbidity and stay below 50 NTU's as required under the State's turbidity
standards. This will require some self sampling collection & monitoring on your part to help determine what level of
turbidity is being pumped out. There are local environmental companies that could help the on -site contractors
determine the levels as they pump both the pond & any future stormwater out. You should keep records of these
results as well and any additional steps they may need to take to get turbidity levels down below 50 NTUs if they ever go
above. Also, if you could please send updates (emails) as to the start/completion of each of the major steps outlined
within the construction proposal. Please call or write if you have any questions. Thanks,
Scott
SCOTT VINSON
NCDENR-DWQ
943 WASHINGTON SQUARE MALL
WASHINGTON, NC 27889
OFFICE:[phone]
DIRECT:(252) 94&3848
Before printing this email, please consider your budget and the environment.
"E-mail correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third
parties unless the content is exempt by statute or other regulation.

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jpr Hull Storey Gibson
Companies, LLC
February 28, 2012
Mr. Samir Dumpor
Environmental Engineer
North Carolina Department of
Environment and Natural Resources
Division of Water Quality
943 Washington Square Mall
Washington, North Carolina 27889
Re: Stormwater Permit No. SW7000718 Modification
Twin Rivers Mall
Dear Samir:
/vK�.�1 iy�✓P .
/ 1 TO S
Thank you for discussing the sequence adjustment for the captioned project. I believe I have
addressed the concerns you raised below.
Attached hereto as Exhibit "A" is a drawing of the proposed fill area for the Cracker Barrel at
the Twin Rivers Mall. The property owner proposes to create the pad shown within the
volume of the pond by moving material located below the existing top of bank elevation 22
from point to point within the pond. The earth moving activity to create the pad will take
approximately 14 days and will result in a temporary increase in the volume of the pond at
the existing location.
The existing pond currently has a volume of approximate) 250,230 bic feet. In creating
this pad, the pry ner will create, on a temporary bast , a r pond of
approximately 271,900 bic feet, to handle the storm water runoff from the mall. The
propertyowner into place several measures to handle and control sedimentation
within this new pond:
• Prior to moving dirt, the property owner will pump down the water level in the
existing pond which will give a substantial reserve volume in the event of a rain
event during the approximately 14 days the pad and temporary pond are being set
up.
• Upon the completion of the building pad and the loading of the surcharge, the pond
water level will be allowed to refill to the current level, providing as much or more
water quality treatment as exists with the existing pond.
• The side slopes of the pond and surcharge fill will be hydro -seeded and irrigated to
assure maximum grass growth to eliminate runoff from the new fill areas.
• The property owner will install a double row of silt fence below the outlet of the
RCP outfall for the pond to capture any sediment.
ACQUISITION • DEVELOPMENT • REDEVELOPMENT
1190 Intenute Parkway Auywua, Gnipa 30909 [phone] fax: [phone]

Simultaneous with this pad construction, the property owner will be:
• Installing the new concrete outfall weir onto the adjacent state right of way;
• Digging the ponds marked in Exhibit "B" attached hereto and installing the erosion
and sedimentation controls in those ponds; and
• Installing the new RCP within the parking lots to direct flow to the new ponds (these
pipes will be plugged until the ponds are ready for the storm water).
After the portion of the new ponds, (including sedimentation controls) have been
completed such that the volume of the existing pond has been replaced, the plugs in the
pipes will be removed, and all storm water will be redirected to the new pond system. The
existing pond will be taken off line and filled with material coming out of the new pond.
During this process, the property owner will perform the following measures to further
protect from sediment leaving the property. After each rainfall event of 1h" or more, the
property owner will:
• Inspect all silt fence, and any accumulated sediments will be removed and the filter
fence repaired if needed;
• Inspect the sides slopes of the surcharge material for any erosion or failure; and
• Sweep the parking lots of sediment.
As we discussed, the existing pond is somewhat unusual in that it was installed with upland
nodes. Those nodes can be moved around without diminishing the volume of the pond
thereby allowing the property owner the opportunity to accelerate the surcharge process.
Also, since the property owner is tripling the volume of the storm water ponds serving the
property, the volume of the existing pond will be replaced early in the construction process,
and the property owner can fill the existing pond directly from dirt coming out of one of the
new pond areas - reducing the handling of that dirt from two times to once, reducing the
volume of dirt temporarily stockpiled, and considerably shortening the project schedule -
without ever reducing the volume storm water storage on the property. The changes we
have been discussing make good sense to the property owner and should make good.sense
to NCDENR, and I very much appreciate NCDENR's willingness to work through these final
issues with me. 1 will call you to discuss and finalize.
Thank you for your help.
HULL ST Y GIBBON COMPANIES, LLC
4�
Steve Mitchell

If
OWN PIPE
IPF I"
OPEN TOP
PIPE j
IPF PK
NAIL
lCONCRETE WEIR
POND "C"
46,127 \C.F.
9
TRIO
POND "D"
15,105 C.F.

volume of new pond
W = 271,900 c.f.
24
proposed
existing contours
contours
Yn
C, this area to be
moved to
surcharge pad
this; sniea to be i •NA
surc9a, rye, 19
21 20
f 21
zz
hydroseed
V . s urecharge pile
1
�j ' , I ,' \ ``x.� .� % �� ,! \� \`, .\
and all disturbed
areas.
�2 .1 -1\
'k
^�\, �' \ '�. ,11 Illh�lo�n¢sonf J `�\ �.L ;\,� \. `.� \,.
17
ILL, 23
24
existing bottom of pond_ / jL�-I\ i i\
'?f fix -ting pond
22 c.f.
t 0
Z'
261,�N
N"
6Q'tz dime tion ring to s7--
, n /
Sem;ih until,remainder, lcP
'X of po
IV be filled
CUR9 NL[-,T
-24-
.-'R/ -MARK
elevation 22- CURn NLZT
existing siling top of pond q cr, A I E. 7 3
maximum fill CuvO NLEI
1 .7
elevation 27,
GVRB
GRATE-:,,.7; A
install C 74 0
sediment
inspect and remove '-CURB 'PIL� T
trap sediment aftei��' lee
here
N 1 -3. 44 1�6roatiir than eachiraid
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IFIAT—22 52
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W VEGETATIVE STRIP/POND STORAGE
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�' USGS MAPB OMwm IOI/I O
Z TWINR MMALL /NEW BERNM DETENTION POND IMPROVEMENTS
y
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TWIN RIVERS MALL / NEW BERN MALL
DETENTION POND IMPROVEMENTS
SUPPORTING CALULATIONS
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is
SUPPORTING CALCULATIONS
REQUIRED POND VOLUME AND STORAGE
IMPERVIOUS AREA
AC
FIRST 1" OF RUNOFF
CUBIC FEET
FIRST 1.5" OF RUNOFF
CUBIC FEET
IN RIVERS MALL
37.44
135,907 V
EXISTING DET POND SITE
2.59
14,100
TOTAL=
( 40A
150,008
PROPOSED DETENTION POND VOLUME AND STORAGE
ELEVATION
ft)
Surface Area
(so
Surface Area
AC
Incremental
Volume
c
Cumulative Volume
c
17.00
80,636.00
1.85
0.00
0.00
18.00
96,203.00
2.21
88,419.50
88,419.50
18.50
104,611.50
2.40
96,515.50
140,725.25
18.75
108, 815.75
2.50
100, 563.50
166, 878.13
19.00
113,020.00
2.59
104,611.50
193,031.00
19.25
117,276.75
2.69
108,842.00
223,414.38
19.50
121,533.50
2.79
113,072.50
253,797.75
20.00
130,047.00
1 2.99
121,533.50
314,564.50
STORAGE
CF
DETENTION POND AT 18.75 FT
166,878.13
EXISTING STORM PIPE
21,773.00
OTAL STORAGE=
188,651.13

® POND DRAWDOWN
3.5.2. Orifice Equation
The basic equation for orifices is:
Q = CDAti 2gfl
1"here: Q = Discharge (cfs)
CD = Coefficient of discharge (dimensionless) - see Table 3-8
A = Cross -sectional area of flocs at the orifice entrance (sq ft)
= acceleration of gravity (32_' ft/sec')
Ho = Driving head (ft), measured from the centroid of the orifice area to
the crater surface - Note: Usually use Ho/3 to compute
drawdocvn through an orifice to reflect the fact that head is
decreasing as the drawdorvn occurs. L a }t
Orifice size=
61nches
Cd=
0.6
A=
0.1963SF
9=
32.2 ft/sec2
Ho=
0.617ft
_ Q=
0.668cfs
DRAWDOWN
DAY CIF
1
57,730
2
115,460
3
173,190
4
230,921
5
288,651
is

I1
PAVEMENT REMOVED �� ( � �'�
ROPOSED DEVELOPMENT
/� •.w�' _ -'V J• lam. �A A=3.12 AC
(83% IMPERVIOUS)
J/ 0 Y6 \ i 'PAVEMENT/
r
./ 00�0BUILDING
000`
/ GRASS/ O9
i
I
yob=
N.T.S
POST -DEVELOPMENT
Sheet

Permit
(to be p iWded by DWO)
01 AT►A
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
O`'oF W ATF9OG
o�c
f.. PROJECT INFORMATION " ° , . "
Project name Twin Rivers Mall I New Bern Mall Detention Pond Improvements
Contact person Steve Mitchell
Phone number
Date
Drainage area number
706-691-7097
11130011
II.. DESIGN INFORMATION ` - �_? w4 " , u<•;
Site Characteristics
Drainage area
2,266,862 ft'
52- %4
Impervious area, post -development
1,743,707 ft'
40.03
% impervious
76.92 %
Design rainfall depth
1.0 in
Storage Volume: Non -SA Waters
Minimum volume required
150,008 ft'
OK
Volume provided
188,651 ft3
OK, volume provided is equal to or in excess of volume required.
Storage Volume: SA Waters
1.5' runoff volume ft3
Pre -development 1-yr, 24-hr runoff ft3
Post -development 1-yr, 24-hr runoff ft3
Minimum volume required It,
Volume provided ft3
Peak Flow Calculations
Is the pre/post control of the lyr 24hr storm peak Bow required?
N (Y or N)
1-yr, 24-hr rainfall depth
NA in
Rational C, pre -development
NA (unitless)
Rational C, post -development
NA (unitless)
Rainfall intensity: 1-yr, 24-hr storm
NA in1hr #VALUE!
Pre -development 1-yr, 24-hr peak Bow
NA ft3lsec
Post -development 1-yr, 24-hr peak Bow
NA ft3lsec
Pre/Post 1-yr, 24-hr peak Bow control
#VALUE! ft3lsec
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx. at the pen. pool elevation)
Top of 1Oft vegetated shelf elevation
Bottom of 1 Oft vegetated shelf elevation
Sediment cleanout, top elevation (bottom of pond)
Sediment cleanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state -required temp. pool?
Elevation of the lop of the additional volume
18.75 fmsl
17.00 hnsl
17.00 first
NA foul
NA fmsl
13.00 fmsl
8.00 fmsl
5.00 ft
NA (Y or N)
18.8 fnsl OK
Form SW401-Wet Detention Basin-Rev.8-9117/09 Parts 1.811. Design summary, Page i of 2

Permit No.
fie be provided by DWO)
IL DESIGN INFORMATION „`.
Surface Areas
Area, temporary pool
108,816 ft'
Area REQUIRED, permanent pool
SAIDA ratio
#VALUE! ftt
NA (unifiess)
Area PROVIDED, permanent pool, Apr,,,, c,
67,639 It
#VALUEI
Area, bottom of IN vegetated shelf, Ate,
NA
ftt
Area, sediment cleanoul, lop elevation (bottom of pond), Ate.
30,518 ft?
Volumes
Volume, temporary pool
188,651 ft3
OK
Volume, permanent pool, Vpe, "
NA ft'
Volume, forebay (sum of forebays if more than one forebay)
NA ft'
Forebay %of permanent pool volume
#VALUEI %
#VALUEI
SAIDA Table Data
Design TSS removal
NA
%
Enter either 85 or 90
Coastal SAIDA Table Used?
NA (Y or N)
Mountain/Piedmont SA/DA Table Used?
NA (Y or N)
SAIDA ratio
NA
limitless)
Average depth (used in SAIDA table):
Calculation option 1 used? (See Figure 10-2b)
NA (Y or N)
Volume, permanent pool, Vs,,,, cel
NA ft7
Area provided, permanent pool, Ate,,, cod
67,639 ft
Average depth calculated
NA If
OK
Average depth used in SAIDA, dN, (Round to nearest 0.511)
NA
If
#VALUEI
Calculation option 2 used? (See Figure 10-2b)
NA (Y or N)
Area provided, permanent pool, A._.
67,639 ftz
Area, bottom of 10ft vegetated shelf, A, pie,
NA
ft7
Area, sediment deanout, top elevation (bottom of pond), Ad ova
30,518 ft'
'Depth' (distance blw bottom of 1 Oft shelf and lop of sediment)
#VALUE! ft
Average depth calculated
NA
If
OK
®
Average depth used in SAIDA, d., (Round to nearest 0.5ft)
NA
If
#VALUEI
Drawdowm Calculations
Drawdown through orifice?
Y (Y or N)
Diameter of orifice (if circular)
6.00 in
Area of orifice (if -non -circular)
int
Coefficient of discharge (Co)
0.60 (unitless)
Driving head (Ho)
0.62 it
Drawdown through weir?
N (Y or N)
Weir type
NA (unidess)
Coefficient of discharge (C.)
NA limitless)
Length of weir (L)
NA ft
Driving head (H)
NA ft
Pre development 1-yr. 24-hr peak Bow
NA ft`/sec
Past -development 1-yr, 24-hr peak flow
NA ft7/sec
Storage volume discharge rate (through discharge orifice or weir)
0.74 fts/sec
Storage volume dmwdown time
2.64 days
OK, draws down in 2-5 days.
Additional Information
Vegetated side slopes
2' :1
OK
Vegetated shelf slope
NA :1
OK
Vegetated shelf width
NA It
OK
Length of flowpath to width ratio
NA :1
OK
Length to width ratio
NA :1
OK
Trash rack for overflow 8 onfce?
Y (Y or N)
OK
Freeboard provided
NA It
OK
Vegetated filter provided?
NA (Y or N)
OK
Recorded drainage easement provided?
NA (Y or N)
OK
Capures all mnoff at ultimate build -out?
NA (Y or N)
OK
Drain mechanism for maintenance or emergencies is:
Pond to be pumped in emergencies
Form SW401-Wet Detention Basin-Rev.8-9117/09
Paris 1.811, Design Summary. Page 2 of 2

sr
NC®ENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. John W. Gibson
HIS New Bern, LLC
C/o Hull Storey Gibson Companies, LLC
1190 Interstate Pkwy
Augusta, GA 30909
Dear Mr. Gibson:
Division of Water Quality
Coleen H. Sullins
Director
October 19, 2009
Subject: NOTICE OF INSPECTION
Permit No. SW7000718
Twin Rivers Mall
Craven County
Dee Freeman
Secretary
On September 30, 2009, Mr. Samir Dumpor of the Washington Regional Office of the Division of Water
Quality (DWQ) inspected the Twin Rivers Mall development in New Bern, Craven County to determine
compliance with Stormwater Management Permit Number SW7000718, which was issued on September 25,
2000, and renewed on October 19, 2009. DWQ file review and site inspection revealed that the project is in
substantial compliance with the approved permit, however the site needs additional maintenance.
Please notify this Office if a sediment accumulation survey has been completed on the stormwater wetland
system and submit the results. If one has not been completed, please due so as soon as possible and forward
the results to this Office. If sediment has accumulated to the removal benchmark (25% of the original depth)
as set out in your Operation & Maintenance Agreement, this sediment needs to be removed and disposed of
properly. Please submit a Plan of Action, which will outline a timetable for the completion of this work.
Please have the banks of the wetland maintain properly. There is an excessive amount of weeds and small
woody vegetation located around the wetland. Remove the small trees that grow on banks of the wetland.
Please submit the required information as requested above by November 19, 2009 or have a written Plan of
Action submitted by this date. If additional time is needed to complete these items, please submit a written
request giving reasons by this date.
Please be advised that you are required to comply with the terms, conditions and limitations of your
Stormwater Management Permit under. Title 15A North Carolina Administrative Code 2H .1003 and North
Carolina General Statute 143-214.7, including operation and maintenance of your permitted stormwater
system.
Please be advised that violations of your Stormwater Management Permit may be subject to the assessment of
civil penalties of up to $25,000 per day per violation. If you have any questions please contact me at the
Washington Regional Office, telephone number [phone].
North Carolina Division of Water Quality Internet: www.ncwatereualitv.oro
943 Washington Square Mall Phone: [phone]
Washington, NC 27889 FAX [phone]
An Equal OpportunitylAffrmative Action Employer- 50% Recycled/f 0% Post Consumer Paper
NorthCarolina
Naturally

Sincerely,
Samir Dumpor
Environmental Engineer
cc: WaRO Files

® Hull Storey Gibson
Companies, LLC
December 10, 2009
Mr. Samir Dumper
NC Division of Water Quality
943 Washington Square Mall
Washington, NC 27889
RE: Twin Rivers/New Bern Mall Permit 4 SW 7000718
Action Plan for Compliance with Notice of Inspection
Dear Mr. Dumpor.
Below is our schedule for assessment and maintenance of the Twin Rivers/New Bern
Mall stormwater detention facility. This schedule takes into account the scheduling of
consultants and contractors and potential weather delays.
Monday, December 7, 2009 — Obtained the NCDENR records related to design of the
stormwater detention system
Thursday, December 10- Monday, December 14, 2009 — Review of records and design
by civil engineer and Hull Storey Gibson staff
Tuesday, December 14, 2009- Friday, December 18, 2009 — Perform Siltation Survey
and pond assessment on site
December 28 — December 31, 2009 — Maintenance Analysis and pricing (based on silt
accumulation and engineer's assessment of outlet structure)
January 18 — February 5, 2010 — Removal of trees, woody vegetation and weeds from
the stormwater detention area
February 8-March 2, 2010 — Removal and disposal of silt (if required based on siltation
survey, NCDENR regulations and civil engineer's assessment)
If you have any questions or need additional information, please email me at
k iones(il)hu l lstorevt;ibson.com.
ACQUISITION . DEVELOPMENT . REDEVELOPMENT
119D Interstate Parkway Augusta, Georgia 30909 (106) B63-2222 fax: [phone]

Sincerely,
H/S NEW BERN, LLC
HULL STOREY GIBSON COMPANIES, LLC
\"o -
Kendal R. Jones
VP/Development
ACQUISITION . DEVELOPMENT . REDEVELOPMENT
1190 Interstate Parkway Augusta, Georgia 30909 [phone] Fax: [phone]

HAINES, GIPSON & ASSOCIATES, INC.
CONSULTING ENGINEERS
THOMAS G. HAINES, P.E.
SCOTT E. SAMUEL, P.E.
RANDALL W. GIPSON, P.E
GLENN A. GRAHAM, P.E.
R. CI -AY LEWIS, P.E.
JOSEPH A. NICHOLSON, P.E.
DANIE.L D. CAMPBELL, P.E.
DAVID A. DOMYSLAWSKI, P.E.
JEFFREY 0. STRICKLAND, P.E.
STONCY C. ABERCROMBIE, P.E.
KRISTOPHER M. CAMPBELL, P.E.
MATTHEW T. COGGINS, P.E.
STEPHEN, J. SYWY, P.E.
DAVID H. LOVVORN, P.E
ROBE.RT A. McCANN, P.E.
December 22. 2009
Kendal Jones
Mull, Storey New Bern, LLC
1190 Interstate Parkway
Augusta, Georgia 30909
RE: Stormwater Wetland Sediment Accumulation Survey
New Bern Mall NCDENR Permit No. SW7000718
FIGA Job No. 2009-213.01
Kendal:
On today's date, I have inspected the New Bern Mall stormwater facility to determine it
sediment has accumulated to the removal benchmark (25% of the original depth) and needs to be
removed. The inspection included the inlet, outlet, banks and the ponded area using a small boat.
As noted in Chapter 9 — Stormwater Wetlands of the NCDENR Stomiwater BMP Manual,
sediments should only be selectively removed from stormwater wetlands, primarily from the
forebay. Additionally, accumulated sediment should be removed from around inlet and outlet
structures. In the New Bern Mall facility, no forebay or deep pools in the ponded area or at the
outlet are apparent. The ponded area has a shallow, uniform bottom covered with decaying
vegetative matter. No sediments are visible. This may be due to the vegetative cover on the
banks and inlet swale and the lack of land disturbing activities in the drainage basin.
Sediments in the form of vegetation and trash/debris transported by run-off do appear at
the grass-swale inlet and the outlet filter ring that was placed in 2000. To maintain free Flow in
and out the pond, these materials should be removed.
Please do not hesitate to contact me if I can provide any additional information.
Very truly yours,
HAINES, GIPSON & ASSOCIATES, INC.
Jeffrey B. Strickland, P.E.
enclosure
1550 NORTH BROWN ROAD SUITE 100 LAWRENCEVILLE, GEORGIA 30043 [phone] FAX t770) 491,7750
CIVIL . RUCTURAL BRIDGE

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HAINES, GIPSON & ASSOCIATES, INC
CONSULTING ENGINEERS
THOMAS G. HAINES, P.E.
SCOTT E. SAMUEL, P.E. .
RANDALL W. GIPSON, P.E
GLENN A. GRAHAM, P.E.
R. CLAY LEWIS, P.E.
JOSEPH A. NICHOLSON, P.E.
DANIEL D. CAMPBELL, P.E.
DAVID A. DOMYSLAWSKI, P.E.
JEFFREY B. STRICKLAND, P.E.
STONEY C. ABERCROMBIE, P.G.
KRISTOPHER M. CAMPBE.LL, P.E.
MATTHEW T. COGGINS, P.E.
STEPHEN, J. SYWY, P.E.
DAVID H. LOVVORN, P.E
ROBERTA, McCANN, P.E.
December 22, 2009
Kendal Jones
Bull, Storey New Bern, LLC
1 190 Interstate Parkway
Augusta, Georgia 30909
RE: Stormwater Wetland System Review
FIGA Job No. 2009-213.01
Kendal:
A visual inspection of the New Bern Mall stormwater facility took place to determine how it
functions and what maintenance operations need to take place for proper operation. The system, classified
in your Stormwater Permit No. SW7000718 as a "stormwater wetland", maintains a shallow but permanent
pool with no apparent outlet device other than the barrel of a 36" culvert. Vegetation on the banks will
need to be removed but no sediments other than decayed vegetation and trash/debris from the adjacent
retail uses appear in the pond.
To function as a "stormwater wetland", the facility must meet all of the major design elements
listed at the beginning of Chapter 9 — Stormwater Wetlands, found in the NCDENR Stormwater BMP
Manual, The New Bern Mall stormwater facility does not appear to include the following:
I. side slopes no greater than 3:1
2. facility located in a recorded drainage easement
3. wetland draw -down in 2 to 5 days
4. inlet forebay
5. max. shallow land depth (temp. pool) of P-0"
6. deep pools
7. shallow water (3" to 6")
8. outlet/draw down device
With these required elements not being present, the facility may have been incorrectly classified as
a stormwater wetland. Reconfiguration as a wet detention pond, a facility that does not require the vast
surface area of a stormwater wetland may be possible. Permitting through NCDENR and other
state/federal agencies might be required depending on the presence of any wetland and/or state waters.
Very truly yours,
HAINES, GIPSON& ASSOCIATES, INC.
-:�� 4_4W-,1
Jeffrey B. Strickland, P.E.
1550 NORTH BROWN ROAD SUITE 100 LAWRENCEVILLE, GEORGIA 30043 [phone] FAX [phone]
CIVIL STRUCTURAL BRIDGE

MALL
Stormwater Wetlands Inspection Report
(monthly & within 24 hours after every storm event greater than 1.5 inches)
Inspector Name & Title: Jeff Strickland, P.E.
Inspection Date: 22 November 2009
Code Key: n/a = Not Applicable M = Monitor (potential for future problem)
NP = Not a Problem WN = Work Needed
Inflow Points
`Assessment
Code
-'.` , .: ' ' - ` ' Ex lanation ' " ..: ' ,
Obstruction
Vegetation/debris/sediment
WIN
Inflow to system clogged with debris and trash.
Vegetation slowing run-off needs to be removed.
Erosion/undercutting
NP
Displacement of fabric/
Rip -rap
NP
Pipe Condition
nla
Other (describe)
Foreba
'Assessment' " '•` :..
Code
_ Explanation'
Accumulation
Vegetation/debris/sediment
Side Slope Erosion
Invasive Vegetation
Other (describe)
n/a
No forebay present.

Deep Pool, Shallow Water, Shallow Land Areas
Assessment
Code
Explanation
Shallow land flooded
>5 days after storm
n/a
Shallow land not evident. Dry areas appear too high to
be flooded.
Accumulation
Vegetation/debris/sediment
WN
Vegetation needs to be removed from banks of system.
Plants are
Dead/disease/dying
n/a
Vegetation length
too short/long)
n/a
Bare soil/erosion gullies
n/a
Invasive vegetation (%)
n/a
Algae cover (%)
n/a
Other (describe)
Embankment/Micropool
'Assessment
Code
Explanation -
Erosion and/or loss of dam
n/a
No micropool is evident.
Material
Shrub/trees present
n/a _
embankment
Animal burrows
n/a
embankment
Accumulation Vegetation/
n/a
debris/sediment/ micro ool
Invasive vegetation
n/a
(micropool)
Other (describe)
Outlet Device
Assessment.
Code,
,.'Explanation.'
d
Obstruction
Vegetation/debris/sediment
WN
Outflow is through open pipe with no outlet device.
Erosion/undercutting
NP
Joint failure/loss of joint
Material
NP
Leaking device
n/a
Other (describe)
WN
Vegetation needs to be removed from existing filter ring
at outlet pipe.

Miscellaneous
."Assessment: _; ;,
Code.'
Explanation
Trash/Debris
WN
Accumulated trash needs to be removed from system.
Access
WN
Removal of vegetation from banks will improve/provide
access to system.
Vandalism
n/a
Fence Condition
NP
Fish/wildlife observations
NP
Signage
n/a
Other (describe)
Photographs
Attach digital photographs of the site and structural BMP'S including a caption describing the
photo.
Inspector Initials jbs

JJ/
.
.
P".

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Dumpor, Samir
From:
Kendal Jones [[e-mail]]
Sent:
Monday, March 01, 2010 3:22 PM
To:
Dumper, Samir
Cc:
jeff strickland, P.E.
Subject:
RE: Twin Rivers/New Bern Mall SW 7000718
Attachments:
sediment survey letter.pdf; stormwater system classification letter.pdf; new bern malll
stormwater wetland inspection report.pdf
Follow Up Flag:
Follow up
Flag Status:
Flagged
Attached are the engineer's inspection reports for our file. I will let you know as soon as we remove the vegetation from
the banks. Thanks for your help!
Kendal R. Jones
Hull Storey Gibson Companies, LLC
7o6.855.064
From: Dumpor, Samir [mailto:[e-mail]]
Sent: Friday, December 11, 2009 10:06 AM
To: Kendal Jones
Subject: RE: Twin Rivers/New Bern Mall SW 7000718
Kendal,
Proposed plan of action looks good to me. Please send me an e-mail when the work gets done, so I can close this
project.
Thanks
Samir
From: Kendal Jones [mailto:[e-mail]]
Sent: Thursday, December 10, 2009 5:09 PM
To: Dumper, Samir
Subject: Twin Rivers/New Bern Mall SW 7000718
Samir:
Please review the attached action plan and email me if you have any questions
K.
Kendal R. Jones
Hull Storey Gibson Companies, LLC
1190 Interstate Parkway
Augusta, Georgia 30909
7o6.855.4o64

NEW BERM
rtas � � zoto
MALL �' h
Stormwater Wetlands Inspection Report
Inspector Name & Title: Jeff Strickland, P.E.
Inspection Date: 22 November 2009
Code Key: n/a = Not Applicable M = Monitor (potential for future problem)
NP. = Not a Problem WN = Work Needed
Inflnu, Dninlc
Assessment
Code
Explanation
Obstruction
Vegetation/debris/sediment
WN
Inflow to system clogged with debris and trash.
Vegetation slowing run-off needs to be removed.
Erosion/undercutting
NP
Displacement of fabric/
Rip -rap
NP
Pipe.Condition
n/a
Other (describe)
n/a
Cnrnhn.,
Assessment
Code
Explanation
Accumulation
Vegetation/debris/sediment
n/a
No forebay present.
Side Slope Erosion
n/a
Ihvasive Vegetation
n/a
Other (describe) •
n/a
i

nPen Pnnl_ Shallow Water. Shallow Land Areas
Assessment
Code
Explanation
Shallow land flooded
>5 days after storm
n/a
Shallow land not evident. Dryareas appear too high to
be flooded.
Accumulation
Vegetation/debris/sediment
WN
Vegetation needs to be removed from banks of system.
Plants are
Dead/disease/dying
n/a
Vegetation length
too short/long)
n/a
Bare soil/erosion gullies
n/a
Invasive vegetation (%)
n/a
Algae cover (%)
n/a
Other (describe)
n/a
Embankment/Micro ool
Assessment
Code
Explanation
Erosion and/or loss of dam
n/a
No micropool is evident.
Material
Shrub/trees present
n/a
embankment
Animal burrows
n/a
embankment
Accumulation Vegetation/
n/a
debris/sediment/ micro ool
Invasive vegetation
nla
micro ool
Other (describe)
n/a
Outlet Device
Assessment
Code
Explanation
Obstruction
Vegetation/debris/sediment
WN
Outflow is through open pipe with no outlet device.
Erosion/undercutting
NP
Joint failure/loss of joint
Material
NP
Leaking device
n/a
Other (describe)
WN
Vegetation needs to be removed from existing filter ring
at outlet pipe.

RR'a. nlh�e�uc
IIIJYYIYI IV VYv
Assessment
Code
Explanation
Trash/Debris
WN
Accumulated trash needs to be removed from system.
Access
WN
Removal of vegetation from banks will improve/provide
access to system.
Vandalism
n/a
Fence Condition
NP
Fish/wildlife observations
NP
Signage
nla
Other (describe)
n/a
Photographs
Attach digital photographs of the site and structural BMP'S including a caption describing the
photo.
Grlditinnal Comments,
To function as a "stormwater wetland", the facility must meet all of the major design elements listed at the
beginning of Chapter 9 — Stormwater Wetlands, found in the NCDENR Stormwater BMP Manual. The New Bem
Mall stormwater facility does not appear to include the following.
I side slopes no greater than 3:1
2. facility located in a recorded drainage easement
3. wetland draw -down in 2 to 5 days
4. inlet forebay
5. max. shallow land depth (temp. pool) of F-0"
6. deep pools
7. shallow water (3" to 6")
8. outlet/draw down device
With these required elements not being present, the facility may have been incorrectly classified as a
stormwater wetland.
Inspector Initials ibs

. �. tl.I•
a

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MAIL,
il
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Ponded Surface

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CONSULTING ENGINEERS
THOMAS G. HAINES, P.E.
RANDALL W. GIPSON, P.E
R. CLAY LEWIS, P.E.
DANIEL D. CAMPBELL, P.E.
JEFFREY B. STRICKLAND, P.E.
KRISTOPHER M. CAMPBELL, P.E.
STEPHEN, J. SYWY, P.E.
ROBERT A. McCANN, P.E.
December 22, 2009
Kendal Jones
Hull, Storey New Bern, LLC
1190 Interstate Parkway
Augusta, Georgia 30909
RE: Stormwater Wetland Sediment Accumulation Survey
New Bern Mall NCDENR Permit No. SW7000718
HGA Job No. 2009-213.01
Kendal:
SCOTT E. SAMUEL, P.E.
GLENN A. GRAHAM, P.E.
JOSEPH A. NICHOLSON, P.E.
DAVID A. OOMYSLAWSKI, P.E.
STONEY C. ABERCROMBIE. P.E.
MATTHEW T. COGGINS. P.E.
DAVID H. LOVVORN, P.E
On today's date, I have inspected the New Bem Mall stormwater facility to determine if
sediment has accumulated to the removal benchmark (25% of the original depth) and needs to be
removed. The inspection included the inlet, outlet, banks and the ponded area using a small boat.
As noted in Chapter 9 — Stormwater Wetlands of the NCDENR Stormwater BMP Manual,
sediments should only be selectively removed from stormwater wetlands, primarily from the
forebay. Additionally, accumulated sediment should be removed from around inlet and outlet
structures. In the New Bern Mall facility, no forebay or deep pools in the ponded area or at the
outlet are apparent. The ponded area has a shallow, uniform bottom covered with decaying
vegetative matter. No sediments are visible. This may be due to the vegetative cover on the
banks and inlet Swale, the facility's immediate location where no recent land disturbing activities
have taken place and the acceptable level of sediment & erosion control practices of any recent,
off -site land disturbing activities by others in the overall drainage basin.
Sediments in the form of vegetation and trash/debris transported by run-off do appear at
the grass-swale inlet and the outlet filter ring that was placed in 2000. To maintain free flow in
and out the pond, these materials should be removed.
Please do not hesitate to contact me if I can provide any additional information.
Very truly yours,
HAINES, GIPSON & ASSOCIATES, INC
Jeffrey B. Strickland, P.E.
enclosure
1550 NORTH BROWN ROAD SUITE 100 LAWRENCEVILLE, GEORGIA 30043 [phone] FAX [phone]
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HAINES, GIPSON & ASSICIA ,
CONSULTING ENGINEERS
THOMAS G. HAINES, P.E.
RANDALL W. GIPSON, P.E
R. CLAY LEWIS, P.E.
DANIEL D. CAMPBELL, P.E.
JEFFREY S- STRICKLAND. P.E.
KRISTOPHER M. CAMPBELL, P.E.
STEPHEN, J. SYWY, P-E.
ROBERT A. McCANN, P.E.
December 22, 2009
Kendal Jones
Hull, Storey New Bern, LL.0
1 190 Interstate Parkway
Augusta, Georgia 30909
RE: Stormwater Wetland System Review
HGA Job No. 2009-213.01
Kendal:
SCOTT E. SAMUEL, P.E.
GLENN A. GRAHAM, P.E.
JOSEPH A. NICHOLSON, P.E.
DAVID A. DOMYSLAWSKI, P.E.
STONEY C. ABERCROMBIE, P.E.
MATTHEW T. COGGINS, P.E.
DAVID H. LOVVORN, P.E
A visual inspection of the New Bern Mall stormwater facility took place to determine how it
functions and what maintenance operations need to take place for proper operation. The system, classified
in your Stormwater Permit No. SW 7000718 as a "stormwater wetland", maintains a shallow but permanent
pool with no apparent outlet device other than the barrel of a 36" culvert. Vegetation on the banks will
need to be removed but no sediments other than decayed vegetation and trash/debris from the adjacent
retail uses appear in the pond.
To function as a "stormwater wetland", the facility must meet all of the major design elements
listed at the beginning of Chapter 9 — Stormwater Wetlands, found in the NCDENR Stormwater BMP
Manual. The New Bern Mall stormwater facility does not appear to include the following:
I . side slopes no greater than 3: l
2. facility located in a recorded drainage easement
3. wetland draw -down in 2 to 5 days
4. inlet forebay
5. max. shallow land depth (temp. pool) of V-0"
6. deep pools
7. shallow water (3" to 6")
8. outlet/draw down device
With these required elements not being present, it could be argued that the facility has been
incorrectly classified as a stormwater wetland.
Very truly yours,
HAINES, GIPSON & ASSOCIATES, INC,
Jeffrey B. Strickland, P.E.
1550 NORTH BROWN ROAD SURE 100 LAWRENCEVILLE, GEORGIA 3OD43 [phone] FAX [phone]SO
CIVR STRUCTURAL BRIDGE