SW6140302_HISTORICAL FILE_20141016

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax [phone]
Email [e-mail]
July 24, 2013
Mr. Scott Brown, PE OCT
4D Site Solutions, Inc.
409 Chicago Drive, Suite 112
Fayetteville, NC 28306
Re: Hydraulic conductivity (permeability) analysis & seasonal water table determination
(SHWT) for proposed stormwater retention areas, West Hampton Subdivision, 0404-31-
3069, off Woodspring Drive, Cumberland County, North Carolina
Dear Mr. Brown,
An evaluation of soil properties and hydraulic conductivity (Ksat) has been conducted at
your request on the aforementioned property. The purpose of the investigation was to
determine soil water table depths (SHWT) based on soil profiles. In addition, Ksat was to
be provided at varying depths, for use with stormwater retention basin design.
Saturated hydraulic conductivity of the unsaturated zone was measured in a similar
method as described in the Soil Science Society of America Journal, Vol. 53, no 5, Sept. -
Oct. 1989, "A Constant Permeameter for Measuring Saturated Hydraulic Conductivity of
the Vadose Zone" and Comparison of the Glover Solution with the Simultaneous
Equations Approach for Measuring Hydraulic Conductivity." This consists of advancing
a small diameter bore hole to a predetermined depth. At this depth, a constant head
(pressure) was established and maintained. Flow measurements were made at timed
intervals after flow stabilized.
Soils at the proposed basin site are most similar to the Kalmia (borings 1 & 2) and
Stallings (boring 3) soil series (see attached boring logs). Three borings were advanced
to 9.00 feet below the ground surface. Seasonal High Water Table (SHWT) as
determined by evidence of colors of chroma 2 or less (and/or concentrations of high redox
mottles) was encountered at depths of 24 to 102 inches below the ground surface. Static
water levels were observed in each boring at varying depths (see attached).
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING - SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN

Two compact constant head permeameter (CCHP) tests were conducted at varying depths
below the ground surface (see attached). The measured Ksat rate ranged from 18.64 to
2638 cm/hr (equivalent to 7.34 to 1038 inches/hour).
The attached map shows locations of the sample points as well as Ksat location.
It should be noted that the reported SH WT does not necessarily reflect the elevation of
static groundwater (due to variations in groundwater recharge rates, annual rainfall,
drought conditions, etc.). Reported static water levels are simply a measurement on the
day of analysis.
The data presented in this report are limited by a number of considerations. The primary
consideration is that soil formations can be highly variable. The soils found on this site
can be subject to inclusions of other soil types, perched water, artesian conditions and/or
layers of undulating low permeability clay seams. These and other soil conditions can
have an affect on the steady state of groundwater flow. To the extent possible, we have
identified the soil types that will impact the flow of groundwater, and have provided a
professional opinion as to the depth of SHWT.
I trust this is the information you require at this time.
Sincerely,
Mike Eaker
NC Licensed Soil Scientist #1030

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville. NC 28311
Phone/Fax [phone]
Email mike@southeastemso!l.com
SHWT depths, West Hampton Subdivision, Cumberland County, NC
BORING SHWT DEPTH (inches) Observed Water (inches)
1 72 80
2 102 106
3 24 34
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE(MOUNDING • SURFACE/SUBSURFACE'WASTE TREATMENT SYSTEMS. EVALUATION 8 DESIGN

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax [phone]
Email [e-mail]
Measured Ksat Rates, West Hampton Subdivision, Cumberland
County, NC
Ksat Ksat
Location Depth in cm/hr in/hr
1 48 18.64 7.34
2 76 26.38 10.38
SOIIJSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION & DESIGN

P.O. Box 9321
c....,.......�u.. urn oova
x = Soil Boring/Ksat Location (West Hampton)
Cumberland County, NC
US State Plane 1983 Scale 1:8,000 4D-BOR.SSF
North Carolina 3200 N 7242013
NAD 1983 (Conus) p 1,000
--1 GPS PathFlndereCIffite
Feet P-Trimble.
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville. NC 28311
Phone/Fax [phone]
Email mike®southeasternsoil.com
Soil Profile Description (boring 1), West Hampton Subdivision, Cumberland
County, NC
This map unit consists of well drained soils that formed in sandy fluvial sediment on
terraces of Rockfish Creek. Slopes range from 0 to 2 percent.
A - 0 to 2 inches; light brownish gray (l OYR 6/2) fine sand; weak fine granular structure;
very friable; common fine roots; abrupt smooth boundary.
E - 2 to 18 inches; pale brown (1 OYR 6/3) fine sand; weak fine granular structure; very
friable; few fine roots; clear wavy boundary.
C I - 18 to 40 inches; light gray (5Y 7/1) clean sand grains; weak fine granular structure;
very friable; gradual wavy boundary.
C2 - 40 to 56 inches; light gray (5Y 7/1) clean sand grains; few fine grayish brown (1 OYR
5/2) mottles; weak fine granular structure; very friable; clear wavy boundary.
C3 - 56 - 67 inches; light gray (I OYR 7/1) coarse sand; many fine light brownish gray
(I OYR 6/2) mottles; single grained; loose; clear smooth boundary.
C4 - 67 - 72 inches; brown (I OYR 5/3) coarse sand; single grained; loose; clear smooth
boundary.
C5 - 72 - 108 inches; brown (1 OYR 5/3) coarse sand; many medium prominent grayish
brown (1 OYR 5/2) mottles; single grained; loose; clear smooth boundary.
SHWT @ 72 inches (1 OYR 5/2)
Observed water at 80 inches
SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUSDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGEIMOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax [phone]
Email [e-mail]
Soil Profile Description (boring 2), West Hampton Subdivision, Cumberland
County, NC
This map unit consists of well drained soils that formed in sandy fluvial sediment on
terraces of Rockfish Creek. Boring is located on a bluff (10+ feet) above Rockfish Creek.
Slopes range from 0 to 1 percent.
A - 0 to 18 inches; very dark gray (IOYR 3/1) fine sand; many fine clean sand grains (salt
and pepper); weak fine granular structure; very friable; common fine roots; abrupt smooth
boundary.
Cl - 18 to 47 inches; black (1 OYR 2/1) fine sand; weak fine granular structure; very
friable; gradual wavy boundary.
C2 - 47 to 52 inches; black (I OYR 2/1) sandy loam; weak fine granular structure; very
friable; clear wavy boundary.
C3 - 52 - 79 inches; mixed black (I OYr 2/1) and grayish brown (1 OYR 5/2) coarse loamy
sand; single grained; loose; gradual wavy boundary.
C4 - 79 - 85 inches; light gray (10YR 7/2) clean sand; massive; very friable; clear smooth
boundary.
C5 - 85 - 98 inches; brown (1 OYR 5/3) coarse sand; many medium pockets of clean sand;
massive; very friable; clear smooth boundary.
C6 - 98 - 102 inches; brown (1 OYR 5/3) coarse sand; many medium fine and medium
pebbles; massive; very friable; clear smooth boundary.
C7 - 102 - 108 inches; mixed brown (I OYR 5/3) and grayish brown (I OYR 5/2) coarse
sand; many medium fine and medium pebbles; massive; very friable.
SHWT @ 102 inches (I OYR 5/2)
Observed water at 106 inches
SOIL/SITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWATER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN

Southeastern Soil & Environmental Associates, Inc.
P.O. Box 9321
Fayetteville, NC 28311
Phone/Fax [phone]
Email [e-mail]
Soil Profile Description (boring 3), West Hampton Subdivision, Cumberland
County, NC
This map unit consists of somewhat poorly drained soils that formed in loamy sediment
on uplands. Slope is less than 2 percent.
A - 0 to 6 inches; very dark gray (1 OYR 3/1) fine sand; weak fine granular structure; very
friable; few fine roots; clear smooth boundary.
Bt - 6 to 24 inches; dark brown (1 OYR 3/3) loamy sand; weak fine granular structure;
very friable, gradual wavy boundary.
Cgl - 24 to 34 inches; very dark brown (1 OYR 2/2) coarse sand; very friable; single
grained; loose; few fine pebbles; gradual wavy boundary.
Cg2 - 34 to 70 inches; mixed dark brown (1 OYR 3/3) and dark grayish brown (I OY 4/2)
coarse sand; very friable; single grained; loose; few fine pebbles.
SHWT @ 24 inches (IOYR 2/2)
Free Water observed at 34 inches
SOIUSITE EVALUATION • SOIL PHYSICAL ANALYSIS • LAND USE/SUBDIVISION PLANNING • WETLANDS
GROUNDWAl-ER DRAINAGE/MOUNDING • SURFACE/SUBSURFACE WASTE TREATMENT SYSTEMS, EVALUATION 8 DESIGN

{
LlD 6ITF
SOLUTION,5, INC.
LNC,fNLLRING I West Hampton Phase If
LAND
Pond #1
SUIZVCYIN4
CON 5T R UCT ION
LAYOUT
Drainage Area:
CP5 5L9VICL5
1,157,130 sf— 26.6 acres
LAND
DLVLLOPMCNT
Impervious Area: 356,178 sf (8.2 ac)
% Impervious: 31 %
1 inch Storm Event:
Rv = 0.05+0.0091
Rv = runoff coefficient
I= percent impervious
Rv=0.05+0.009*31 %
= 0.329
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume = 3,630*(1 inch)*(0.329)*26.6 acres = 31,768 cf
Designed for 90% TSS removal so no filter strip is required:
SAIDA ratio is 1.54 for a depth of 4.5 feet
Required surface area = 26.6 ac * (0.0154) = 0.410 ac or 17,844 sf
Surface area provided = 21,032 sf
409 CJfC4S0
DRIVE
SUITL 12
FAYLTTLVILLL
NC 2aso6
PNONL
910 426-6777
FAX
910 426-5777
OCT 1 6 %?'?

Lip 5ITF
�oLUTION,5, INC.
LNC,INLLP1N4 I Pond#2
LAND
5uRVEY1NS Drainage Area:
C""T2uCT1ON
LAYOUT 441,212 sf— 10.1 acres
C;PJ 5CRVICL5
LAND
9LVELOPMGNT
dog CUICAC;O
DRIVE
SUITc 112
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NC 283o6
P1J ON L
910 426-6777
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910 426-5777
Impervious Area: 134,087 sf (3.1 ac)
% Impervious: 30%
I inch Storm Event:
Rv = 0.05+0.009 I
Rv = runoff coefficient
I= percent impervious
Rv=0.05+0.009*30%
= 0.320
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume = 3,630*(1 inch)*(0.320)* 10.1 acres = 11,732 cf
Designed for 90% TSS removal so no filter strip is required:
SAIDA ratio is 1.90 for a depth of 3.0 feet
Required surface area = 10.1 ac * (0.0190) = 0.192 ac or 8,359 sf
Surface area provided = 8,491 sf

614C, I N LL R IN C;
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LAYOUT
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FAYLTTCVILLL
NC 2b3o6
POONC
910 426-6777
FAX
910 426-5777
�OLUTIONz), INC.
April 17, 2014
NCDENR Division of Water Quality
Attn: Bill Diuguid
512 N. Salisbury Street
Raleigh, NC 27604
RE: Phase II Stonn Water Resubmittal, West Hampton Phase II S/D, Cumberland County, North
Carolina
Bill;
We are resubmitting two copies of the revised construction drawing sheets for the West Hampton
Phase II Subdivision. The revisions were made in accordance with our email correspondence.
Access/maintenance easements have been shown for both ponds. Pond #1 had to be relocated
because it was within the floodway of Rockfish Creek. I have enclosed updated calculations as well
as the supplement form for pond #l.
I look forward to working with you on this project. If you have.any questions or concerns, please
feel free to contact us.
Sincerely,
4D Site Solutions Inc.
Scott rown, PE
sbrown a 4dsitesolutions.com
Enclosure
APR 2 1 2014

�\ QD SITE
SowTioNS, INC.
CNSINC 6RIN(�
LAND
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CONSTRUCTION
LAYOUT
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LAND
OLVLLOPMENT
dog CNICA(,O
DRIVL
SUITE 112
FAYETTCVILLL
NC 2s3o6
Pd OIJC
910 126-6777
FAX
910 426-5777
West Hampton Phase II Storm Water Narrative
The West Hampton Phase 11 development is a 158 lot single family residential development with the
associated infrastructure. It is located on the west side of Woodspring Drive. The site meets the
qualifications for a low density development. However, the wetland impacts from the streets and
utilities require 85% TSS removal. Therefore, permanent wet ponds have been designed to treat the
storm water from the development.
The storm water generated from the development will be treated through the use of two wet ponds
located near the southern edge of the development. The wet ponds are designed in accordance with
the latest NCDENR BMP manual. The storm water is transported from across the site through
underground storm drainage systems. The storm water is released into the forebay of the wet ponds.
The riser (outfall) for the ponds contains a slow release that controls the one year and ten year
storms. The pond reduces the peak flow from the development to less than the predevelopment
flows for each of the storm events.
OCT 16 'ci

AG"
NCMR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
April 24, 2014
Ms. Lorraine Mohler
GHM Group, LLC
7670 Raeford Road
Fayetteville, North Carolina 26304
Subject Stormwater Permit No. SW6140302
West Hampton Phase II Subdivision
High Density Wet Detention Basin Project
Hope Mills, Cumberland County
OC( .16
Dear Ms. Mohler.
John E. Skvafa, lit
Secretary
The Stormwater Permitting Unit received a complete package for the West Hampton Phase II
Subdivision project on April 21, 2014. Staff review of the plans and specifications has determined
that the project, as proposed, will comply with the Stormwater Regulations set forth in Trite 15A
NCAC 2H.1000 and Session Law 2006-246. We are forwarding this Stormwater Management
Permit No_ SW6140302, issued April 24, 2014, for the construction, operation and maintenance of
the subject project and the stormwater BMPs.
This permit expiration date shall not change and shaft be effective from ibe caegiroal date of
issuance urttil April 24, 2022. and'shatr be serbjed to the conditions aaid larnitatio' ns as specifies
therein, and does not svpersede any other agency permit that may leexei wired. Please pay special
attenlion to the conditions listed in this permit regarding the Operation and Maintenanceof the:
BfvlP(sj, fecccda5on of deed restnctiores, procedures fat changes of crvmersnip, transferring the
permit, and ren",ing t:ne permit. Failure to establish an adequate system for operation and
maintenance of the siormwwater isranagernent systerrr, to record deed restrictions, 96 foltm+the
procedures far transfer of the permit, or to renev the permit, will resuff im future compliamce
problems.
If any parts, requirements, or limitations contained in this permit: are unacceptable, you have the
right to request an adjud-icatory hearing by filing a written petition with the Office of Administrative
Hearings (OAH). The written petition must conform to Chapter 150E of the North Carolina General
Statutes. Per NCGS 143-215(e) the petition must be filed with the OAH within thirty (30) days of
receipt of this permit You should contact the OAH with all questions regarding the filing fee (if a
Ming fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh,.
NC 276993-6714, or via telephone at g ie431-3000, or visit their YmLsite at mr.WWAH.opm.
Unless such demands are made this permit shall be final and binding_
1512 Ma Smjoe cerAer. Rgeqk NaM Cmdu 27693-1612
Ranee:919-707 tbft-mtmmvmday..gvr
AnEgWi0X0dUT4AA.ft=2dWe.A&DO — Ski MPT1 tyfWFW PWO /

After thirty days from the date of this letter, this project will be kept on file at the NCDENR Division
of Energy, Mineral and Land Resources, Land Quality Section, Winston-Salem Regional Office. If
you have questions after that time, please contact farad Cole, [e-mail] or Mike
Lawyer, mike.lawyer(cbncdenr_gov, of that office. Until that time, if you have any questions or need
additional information concerning this permit, please contact Bill Diuguid at [phone]; or
[e-mail].
Sincerely,
Original Signed by William H. Diuguld
William H. Diuguid, AICP, Plans Reviewer
for Tracy E. Davis, P.E., CPM
Director, Division of Energy,
Mineral and Land Resources
cc: NCDENR DEMLR Fayetteville Regional Office
Central Files
Stonnwater Permitting Unit Files
Attachments

State Stomrwater Permit
Permit No_SW6140302
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMUT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
GHM Group, LLC
West Hampton Phase II Subdivision
End of Princess Amelia Lane
Hope Mills area, Cumberland County
FOR THE
cortsfruction, operation and maintenance of hvo wet detention basins in compliance
with khe provisions of 15A. NCA.0 2iH _1000 and S.L. 20C16-24.6 (hereafter referred! to as
the "starmwaterrulesl and the approved starmwater management' plans and
speci#ications and other supporting data as attached and on file wi!h and approved! by
the Division of Energy, Mineral and Land Resources (DEMLR),, (Land Quality Section
and considefedl a paint. of this permit.
This permit shall be effective from the date of issuance until April 24, 2022, and shall be
subject to the following specified conditions and limitations:
1. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data_
2. This stormv.ater system has been approved for the. management of stormy}ater
runoff as described in Section 9.7 of this permit_ The stormwater control has been
designed to handle the runoff from 490,265 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.7
of this permit, and per approved plans.
4. rill storrmrater colCection. and treatment systems must be located in either
dedicated common areas or recorded easements. The fiieal plats for fine project
will be recorded showing all such required easements, in accordance with the
approved plans.
S. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
^--- . _1^

State Stomrwater Permit
Pernrit No.SVJ6140302
a
N
The built -upon areas associated with this project shall be located at least 30 feet
landward of all perennial and intermittent surface waters.
The following design criteria have been provided in the two wet detention basins
and must be maintained at design condition:
El
Q
Drainage Area, ages:
Onsite, h1:
Offsite, it2:
Total Impervious Surfaces, I?:
Buildings ft
Roads/Parking, fe:
Other, fe-
Offsite, its:
Pond Depth, feet:
TSS removal efficiency:
Design Storm: inches
Permanent Pool Elevation, FMS)_:
Permitted Surface Area @PP-, fr
Permitted Storage Volume. fi
Storage Elevation, FMSL:
Controlling Orifice: inches
Permanent Pool Volume, ft3:
Forebay Volume, ft :
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
Basin #1
Basin i`#2
26.6
10.1
868,550
415,212
288,580
25,449
356.178
134,087
150,000
81,000
196,178
53,087
10,000
0
7.08
6.21
90%
90%
1.0
1.0
99.10
111.50
21,032
8,491
52,135
12,368 •.
101.18
112.71
3.25
3.25
68,311
25,011
14,445
4.520
Rockfish Cmek / Cape Fear
n
11. SCHEDULE OF COMPLIANCE
1. The stormarater manag:ernent system shall be constructed) in its entirety,
vegetated and operational for its intended use prior to the. completion of any -
built -upon surface and the issuance of any certificate of occupancy.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3: The pennittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency- The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications-
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DEMLR. The records will indicate the date,

State Stormwater Permit
Permit No.SW6140302
activity, name of person performing the work and what actions were taken.
5. The stormwater treatment system shall be constructed in accordance with the
approved plans and specifications, the conditions of this permit, and with other
supporting data.
Uppn completion of construction, prior to issuance; oil a Certificate: of Occupancy'.
and prior to operation of this permittedfacility, a certification amuse be received
from an appropriate designerfor the system imsfall'ed certiEyimg that the permitted
facility has been installed ircaccordance .with this pernrit; the approved) plans arhdl
specifications, anrf other supporting d'acumentaticn. Any deviations fromthe
approved plans and specifications must be noted an we Certification. A
modification may be required for those deviations.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
6. The permittee shalll submit to the Director, and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans., including the
stormwater management measures, built -upon area, details, etc.
b.. Project name change.
C_ Transfer of ownership.
d.. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e.. Further subdivision, acquisition, lease or sale of all or part of the project
area_ The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit! was sought:
fi. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan. %
1, Q. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
1i 1. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the pernittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
Ill. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed NarmelOwnership Change form, to the DMston of Energy,
Mineral and Land, Resources. Land QUOI''ity Section, signed by, bolh parti4s, and
accompanied by supporting documentation as listed on page 2 of the form. The

State,Stormwater Permit
Permit No.SW6140302
project must be in good standing with the Division. The approval of this request
will be considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Energy, Mineral
and Land Resources, Land Quality Section, in accordance with North Carolina
General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
67 The permittee grants DENR Staff permission to enter the property during normal,
business hours for the purpose of inspecting all components of the permitted
stormwater management facility-
F. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
& Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
g. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10.The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2HI.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. The permittee shall submit a renewal request with all required farms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 20 day of April, 2014.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Original Signed by William H. Diuguid
William H. Diuguid, AICP, Plans Reviewer
for Tracy E. Davis, P.E., CPM, Director
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Comrpission

State Stommater Permit
Permit No.SW6140302
West Hampton Phase II Subdivision
Stormwater Permit No. SW6140302
Cumberland County;
Designers Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
West Hampton Phase II Subdivision, end of Princess Ameba Lane, Hope Mills area
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date

State Stormwater Permit
Permit No.SW6140302
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area-
3- All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5: The outlet/bypass structure elevations are per the approved plan.
& The outlet structure is located per the approved plans.
7_ Trash rack is provided on the outlet/bypass structure.
a. All slopes are grassed with permanent vegetation.
g. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided_
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designers Certification to: Brad Cole/Mike Lawyer.
NCDENR DEMLR
Fayetteville Regional Office
Land Quality Section
225 Green Street, Suite 714
Fayetteville, NC 28301
^ - -- / -10

+'4D 51TEoLuTioNS. INC.
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February 25, 2014
NCDENR Division of Water Quality
Attn: Bill Diuguid
512 N. Salisbury Street
Raleigh, NC 27604
RE: Phase II Storm Water Submittal, West Hampton Phase II S/D, Cumberland County, North
Carolina
Bill;
We are submitting the Phase 11 Storm Water permitting package for the West Hampton Phase 11
Subdivision. Please find enclosed 2 copies of the construction drawings, application and
supplement form, calculations, storm water narrative and a check for $505.00.
I look forward to working with you on this project. If you have any questions or concerns, please
feel free to contact us.
Sincerely,
4D Site Solutions Inc.
OCT i s
Scott town, PE
[e-mail]
Enclosure

L NC, I N LLZ I NCB
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CONSTRUCTION
LAYOUT
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LlD .SITE
SoLuTioNS. INC.
West Hampton Phase 11 Storm Water Narrative
The West Hampton Phase II development is a 158 lot single family residential development with the
associated infrastructure. It is located on the west side of Woodspring Drive. The site meets the
qualifications for a low density development. However, the wetland impacts from the streets and
utilities require 85% TSS removal. Therefore, permanent wet ponds have been designed to treat the
storm water from the development.
The storm water generated from the development will be treated through the use of two wet ponds
located near the southern edge of the development. The, wet ponds are designed in accordance with
the latest NCDENR BMP manual. The storm water is transported from across the site through
underground storm drainage systems. The storm water is released into the forebay of the wet ponds.
The riser (outfall) for the ponds contains a slow release that controls the one year and ten year
storms. The pond reduces the peak flow from the development to less than the predevelopment
flows for each of the storm events.
OCT 1 6 "0I

CO?
High Density Residential Subdivisions
Deed Restrictions & Protective Covenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations,
deed restrictions and protective covenants are required for High Density Residential Subdivisions where
lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility. Deed
restrictions and protective covenants are necessary to ensure that the development maintains a "built -upon"
area consistent with the design criteria used to size the stormwater control facility.
I, Lorraine Mohler , acknowledge, affirm and agree by my signature below, that I will
cause the following deed restrictions and covenants to be recorded prior to the sale of any lot:
1. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Numbers"'_ 1c O 30 Z_ , as issued by the Division of Water Quality under the
Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit. OCT 1 6 C
3. These covenants are to run with the land and be binding on all persons and parties claiming under
them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express written
consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence
of the Division of Water Quality.
6. The maximum allowable built -upon area per lot is 5,926 square feet. This allotted amount
includes any built -upon area constructed within the lot property boundaries, and that portion of the
right-of-way between the front lot line and the edge of the pavement. Built upon area includes, but is not
limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does
not include raised, open wood decking, or the water surface of swimming pools.
OR, if the proposed built -upon areas per lot will vary, please REPLACE #6 above with the following:
6. The maximum built -upon area per lot, in square feet, is as listed below:
Lot # BUA Lot # BUA Lot # BUA Lot # BUA
This allotted amount includes any built -upon area constructed within the lot property boundaries, and
that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area
includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and
parking areas, but does not include raised, open wood decking, or the water surface of swimming
pools.
Each lot will maintain a 30** foot wide vegetated buffer between all impervious areas and surface
waters.
**50 foot for projects located in the 20 coastal counties.
8. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street, grading
the lot to drain toward the street, or grading perimeter swales to collect the lot runoff and directing them
into a component of the stormwater collection system. Lots that will naturally drain into the system are
not required to provide these additional measures.
Form DRPC-3 Rev.2 05Nov2009 Page 1 of 2

High Density Residential Subdivisions
Deed Restrictions & Protective Covenances
Signature: Date:
I, , a Notary Public in the
State of
do hereby certify that
County of
appeared
before me this the day of , 20 , and acknowledge
the due execution of the foregoing instrument. Witness my hand and official seal,
SEAL
Signature
My Commission expires
Form DRPC-3 Rev.2 05Nov2009 Page 2 of 2

Diuguid, Bill
From: Scott Brown [[e-mail]]
Sent: Wednesday, March 12, 2014 7:18 PM
To: Diuguid, Bill
Subject: Re: West Hampton Phase II permit app
I have read through your comments. I will look at the drawings again tomorrow and respond back.
thanks,
Scott Brown, PE
4D Site Solutions, Inc.
409 Chicaeo Drive - Suite 112
Favetteville. North Carolina - 28306
Tel: [phone] - Ext. 102
Cell: 910.489.6731
Fax:[phone]
Web: www.4dsitesolutions.com
Sent from my Pad
'
On Mar 12, 2014, at 9:29 AM, "Diuguid, Bill" <bilLOCT 16r
diuRuid@ncdenr.�ov> wrote: "'
Scott:
I've started looking over this site plan package.
I'm not sure I understand how the wet ponds will work, as they are supplied by 42 inch pipes coming
down a subdivision 60 foot drop in elevation if I read the plans right.
I understand that you designed them for the 10 year peak, but it still looks like the burps would struggle
to function.
On C-3.9, the rip rap diffuser appears to run over the weir, possibly short circuiting the bmp.
I'm not sure I understand why you have a narrow overflow weir rather than designing the bmp to use
the entire distance across the weir.
The bmp on c-3.8 looks better, but can you reassure me that the water velocity coming down the hill
won't blow out the pond, particularly since it's right on Rockfish Creek.
I couldn't see the bmp easement lines on those bmps. Remember that they have to be drawn and
recorded, etc.
Finally, your application states that this is a low density project. But with that amount of piped
conveyances, it's a high density project.
Of course, you have the bmps, etc. and you included the high density deed restriction forms, so it's
really a moot point. But I just wanted
you to understand that we view this as a high density project.
Bill Diuguid, AICP, Planner
Stormwater Permitting
Land Quality Section

Division of Energy, Mineral and Land Resources I NCDENR
1612 Mail Service Center (Mail)
512 N. Salisbury St, Raleigh, NC 27604 1 9th Floor (Location & Parcels)
Raleigh North Carolina 27699-1612
Phone: [phone] Fax: [phone]
Website: http://portal.ncdenr.org/web/wp/ws/sLi
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties.

Diuguid, Bill
From: Scott Brown [[e-mail]]
Sent: Monday, March 17, 2014 4:59 PM
To: Diuguid, Bill
Subject: RE: West Hampton Phase II permit app
The reason I mentioned the low density is because the project qualifies for the low density option based on the Phase II
rules. However, we have wetland impacts with the roads and utility corridors. The wetland impacts are what require the
project to treat the storm water like a high density project. Otherwise, there would be no storm ponds and we would
have pipe outlets with 5:1 sales.
See additional responses below your comments.
Scott Brown, PE
4D Site Solutions, Inc
From: Diuguid, Bill[mailto:bill.diuguid(o)ncdenr.gov]
Sent: Wednesday, March 12, 2014 9:29 AM
To: Scott Brown
Subject: West Hampton Phase II permit app OCT ] 6 2P;
Scott:
I've started looking over this site plan package.
I'm not sure I understand how the wet ponds will work, as they are supplied by 42 inch pipes coming down a subdivision
60 foot drop in elevation if I read the plans right.[Scott Brown] The flow through the 42" pipe in pond #2 is 38.8 cfs
where the 42" pipe has a capacity of 110.5 cfs. We are not close to the pipe capacity. We had to increase the pipe size to
get the hydraulic grade line of the storm boxes within the development to function correctly. We are only utilizing 35%
of the capacity of the 42" pipe for pond #2. The 42" pipe for pond #1 has a flow of 53.0 cfs with a maximum flow of
152.3 cfs. Again, we are only at 35% of the pipe capacity. The 42" pipes will not be flowing full.
I understand that you designed them for the 10 year peak, but it still looks like the bmps would struggle to
function.[Scott Brown] Pond #2 has 0.64' between the emergency spillway and high water elevation for the 10 yr event.
The pond should function.
On C-3.9, the rip rap diffuser appears to run over the weir, possibly short circuiting the bmp.[Scott Brown] The rip rap
dissipator was revised last week per comments on the erosion control plan. It should never have been release in that
configuration. SDMH-77 was relocated such that the pipe comes into the side of the base in lieu of the front as shown.
This reduces the chance of blowout.
I'm not sure I understand why you have a narrow overflow weir rather than designing the bmp to use the entire distance
across the weir.[Scott Brown] Without a designated weir, the ponds continue to blow out the forebays. An earthen
berm for a forebay just doesn't hold up. They always blow out. We have found that if we create a weir section in the
forebay and armor the front and backslopes, it earthen forebay will function and not blow out throughout construction.
We could armor the entire forebay berm but this is just added expense to the project.
The bmp on c-3.8 looks better, but can you reassure me that the water velocity coming down the hill won't blow out the
pond, particularly since it's right on Rockfish Creek.[Scott Brown] What are you referring to as blowing out the pond.
Are you referring to the berm blowing out? If so, that is the reason for the rock forebay as mention earlier. The
dissipator is sized based on the velocity coming out of the pipe. We could increase the size of the forebay if that is the
concern. However, we are already at 20%. The fact that the pipe is submerged with be an energy reducer. The
dissipator is sized based on free flow conditions which makes it oversized due to the fact that the pipe should be
submerged fully shortly after construction begins.

I couldn't see the bmp easement lines on those lamps. Remember that they have to be drawn and recorded, etc.[Scott
Brown] The bmps are on their own dedicated lot. The PI and P2 indicate those as pond lots and will be owned and
maintained by the HOA. It is all common area. Therefore, the easement is not needed because you can't have an
easement on yourself.
Finally, your application states that this is a low density project. But with that amount of piped conveyances, it's a high
density project.
Of course, you have the bmps, etc. and you included the high density deed restriction forms, so it's really a moot point.
But I just wanted
you to understand that we view this as a high density project.[Scott Brown] This was discussed at the beginning of the
email. I hope the earlier responses help ease some of your concerns. If not, please, respond or call if you prefer.
Bill Diuguid, AICP, Planner
Stormwater Permitting
Land Quality Section
Division of Energy, Mineral and Land Resources I NCDENR
1612 Mail Service Center (Mail)
512 N. Salisbury St, Raleigh, NC 27604 1 9th Floor (Location & Parcels)
Raleigh North Carolina 27699-1612
Phone: [phone] Fax: [phone]
Website: http://portal.ncdenr.org/web/wq/ws/su
E-mail correspondence to and from this address maybe subject to the North Carolina Public Records Law and maybe disclosed to third parties.

U_ 7'`.
Application Completeness RevieN
First Submittal ❑ Re -sr
Development/Project Name:
Receiving stream name-.19
River Basin: ('-R?F r=;
High Density Projects that require a 401/404 within an NSW require 85% TSS, 30% TN and 30% TP removal.
T&E Species (Goose Creek, Waxhaw Creek or Six Mile Creek Water Sheds): At /. -
Latitude and Longitude: 310' 5'9 A' o 7- k, -!7$ 6q 70_3u L,/ Jurisdiction
Project Address: cie s d Z83
Engineer name and fir SG Roe o ry�piF_ 41,D S, S, L.cf; o : X 2✓0. 4*S
Phone: *0-q zL 9 Emai1:j�Ar.ur do s -f ` . co
Is the project confirmed to be in the State MSI Stormwater Permit jurisdiction? Yes or No
❑ Low Density (no curb and gutter) ❑ Low Density with curb and gutter outlets igh Density ❑ Other
,&1�401 404 impacts to surface waters, wetlands, and buffers (add language to cover letter and/or add info letter)
A
Check forcluded
:� riginal signature (not photocopy) on application
Legal signature (Corporation-VP/higher, Partnership -General Partner/higher, LLC-merrlber/manager, Agent).
If an agent signs the application, a signed letter of authorization from the applicant must be provided which
inclydes the name, title, mailing address and phone number of the person signing the letter.
ff'/Copy of property deed showing ownership or control 1
VZKor subdivided projects, a signed and notarized deed restriction statement
:V ealed, signed & dated calculations /y
r Correct supplement and O&M provided for each BMP on site (check ail that were provided & number of each)--
❑ Bioretention
❑ Dry Detention Basin
❑ Filter Strip
❑ Grass Swale
❑ Infiltration Basin
❑ Infiltration Trench
❑ Level Spreader
❑ Permeable Pavement
❑ Restored Riparian Buffer
❑ Rooftop Runoff Management
❑ Sand Filter
❑ Stormwater Wetland
Cadet Detention Basin 0
❑ Low Density
❑ Curb Outlet
❑ Off -Site
❑ NCDOT Linear Road
OCT 1 6 w14 I
d Two sets of sealed, signed & dated layout & finish grading plans with appropriate details
ge Dd rrative Description of stormwater management provided
V oils report, geotech information provided
izir Wetlands delineated or a note on the plans or in the accompanying documents that none exist on site and/or
adjacent property
details for the roads, parking area, cul-de-sac radii, sidewalk widths, curb and gutter;
5a' Dimensions & slopes provided
❑ /brainage areas delineated ❑ Pervious and impervious reported for each ❑ Areas of high density
Ef� BMP operation and maintenance agg��eements provided
❑ Application complete ¢?Application Incomplete Returned: F/NA, / so:A iii(Date)

\ 4D 51TE
SoLuTioNS, INC.
r�144114c-LRINs I West Hampton Phase H
LAND pond #I
SURVGYING'
CONSTRUCTION
LAYOUT Drainage Area:
SPS 6ERVICGS
LAND 1,157,130 sf— 26.6 acres
PP VCLOPM ENT
Impervious Area: 356,178 sf (8.2 ac)
% Impervious: 31 %
I inch Storm Event:
Rv = 0.05+0.009 I
Rv = runoff coefficient-
1= percent impervious
Rv=0.05+0.009*31 %
= 0.329 OCT 1 6
For volume that must be controlled:
Volume=3,630*Rd*Rv*A
Volume = 3,630*(1 inch)*(0.329)*26.6 acres = 31,768 cf
Designed for 90% TSS removal so no filter strip is required:
SA/DA ratio is 1.54 for a depth of 4.5 feet
Required surface area = 26.6 ac * (0.0154) = 0.410 ac or 17,844 sf
Surface area provided = 21,032 sf
4o9 CNICAC,O
DRIVG
SUITC 112
FAYCTTCVILLG
NC 283o6
PNONC
910 426-6777
FAX
910 426-5777

West Hampton Phase II Pond 91
Drawdown Timc
Temporary storage volume =
Orifice #Idiameter=
Area of orifice =
Orifice #2 diameter =
Area of orifice =
Orifice Coefficient (C,I) _
Orifice elevation=
Water elevation=
Driving head (H) _
Discharge (Q) _
Drawdown time =
52,135 cf
3.25 in
1
0.0576 sf
0 in
I
0.0000 sf
0.60
99.10 ft
101.18 ft
0.69 ft
0.2310 cfs
225691 s
62.7 hr
2_6 days
0Cr 16
WH Pond # I drawdown time.xlsx Printed 4/17/2014

West Hampton Phase 11 Pond I
Jtorm Water Pond Volrmres
.olmne abv,c permaucul pool ('Foul A, ca)
Contour
Contow
Incr.
Accnm.
$Wge
Elev.
Area
Storage
Storage (S)
Ill
t11)
(at)
let)
let)
(II)
99,0
-
-
99J
21,032
1,052
1,052
0.10
99,6
24,049
11,270
12,322
0,60
IGUA
24,994
12,239
24,580
1.10
100,6
25,935
12,730
37,309
1.60
OIJ
26,899
13,209
50,519
2.10
101.6
27,879
13,694
64,212
2.60
1021
28,871
14,187
78,399
3.10
102 6
29,878
14,687
93,087
3.60
103J
30,899
15,194
108,281
4J0
1016
31,934
15,708
123,989
4M
Volurne below permanent pool (Not including Farebay)
Contour Contour Incr. Accnm. Stage
Elev. Ale. JIm-agc $Iorage(S) (71)
I110 (s0 ('c0 Ic0 If0
930
-
-
-
9300
93.1
8,657
431
431
93.10
93.6
9,063
4,430
4,863
93.60
94.1
9,477
4,05
9,498
94.10
94.6
9M8
4.844
14,342
94,60
95.1
10,327
5,056
19,399
95.10
95.6
10,763
5,273
24,670
95.60
96.1
11,206
5,492
30,163
96J 0
96.6
11,657
5,716
35,878
96.60
97.1
12,116
5,943
41,922
97.10
97.6
12,582
6,175
47,996
97.60
98J
13,055
6,409
54,405
98.10
98.6
13,536
6,648
61,053
98.60
99.1
15,495
7,258
68,311
99.10
Forebay volume below permanent pool
Contour Contour Incr. Accnm. Stage OCT 1 6%C
Elev. Area Stooge Son age (S) (Z)
(a) Ist) lei) Ict) 111)
93,0
-
-
-
93.00
93.1
861
43
43
93.10
93.6
1,084
486
529
9160
94.1
1,314
600
1,129
94J0
94.6
1553
717
1,846
94.60
95.1
1,800
838
2,694
95.10
95.6
2,056
964
3,648
95.60
96.1
2,319
1,094
4,742
96,10
96o
2,390
1,227
5969
96.60
97.1
2,870
1365
7,334
97.10
97.6
3,157
1,507
8,841
97.60
98.1
3,453
1,653
10,493
98.10
98.6
3,757
1,803
12,296
98.60
99.1
4,841
2,150
14,445
99.10
W I I Pond I volumes woiking.xlsx Printed 4/172014