20072163 Ver 2_More Info Received_20110715

Strickland, Bev
From: Brian Duncan [[e-mail]]
Sent: Wednesday, July 20, 2011 9:21 AM
To: Strickland, Bev
Subject: Riverwood Commons (3)
Attachments: DWQ submittal report 7-12-11.pdf
Revised Stormwater Management Calculations.
Brian G. Duncan
Civil Designer

972 Trinity Rd
Raleigh, NC 27607
Phone: [phone]
Fax: [phone]
A Certified Woman-Owned Business
1
a
TRANSMITTAL
SPAULDING & MORRIS, PA
Planning • Civil Engineering, • ` Urve ing
Date: 7/14/2011
7?
11 ? i
To:
NCDWQ
Wetlands, Buffers & Stormwater Compliance
[Customer Address Line 2]
Sending:
® Attached
? Shop Drawings
? Copy of Letter
? Total Quantity
Attention: Annette Lucas
Job Number: 643-07
Re: Riverwood Commons
Lillington, Harnett County, NC
DWQ Project: 07-2163 V2
? Under Separate Cover via:
? Prints ® Plans ® Other:
? Change Order ? Samples
? Reproducible ? Specification
Copies Date Description
1 7/12/2011 Written Response to June 17, 2011, Comments
1 4/10/2009 Soil Science Investigation (prepared by Hal Owens & Assoc.)
1 7/12/2011 Revised Stormwater Management Calculations
1 7/11/2011 Revised Stormwater Management Plans

Transmitted for:
® Your use
? As Requested
? Review and Comment
? Approved as Submitted
? Approved as Noted
? Returned for Corrections
? Copies for Approval
? Distribution Copies
? Corrected Prints
I Comments: I
Please accept the enclosed documents for the above referenced project. This information has
been revised to address the Request for Additional Information letter dated June 17, 2011, and
signed by Belinda Henson, Regional Supervisor. Please let us know if you have any additional
comments or requests. Thank you for your assistance with this project.
Copy to:
Thomas Spaulding, PE
Phone: OP-)) 8;4-7990 r Fax: (919) S54-"792'? • 9'2 Ti'iilitV Road • RaIeV-:,h_Noa'th Carolliia 2-60
SCVZ,- SPAULDING & NORMS PALL
Planning • Civil Fitginecting • Sut??.viniy
--,L?v July 12, 2011

Ms. Annette Lucas
DWQ Central Office
Wetlands, Buffers & Stormwater Compliance & Permitting Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Re: Riverwood Commons (AKA Lillington Commercial)
DWQ Project # 07-2163 V2 Harnett County
Dear Annette,
This letter is written in response to Belinda Henson's letter dated June 17, 2011,
requesting additional information for the above named project. Please see the attached
revised stormwater management permit application report, soils report, and revised plans.
Additional Information Requested
1. The runoff from the driveway is conveyed by grass swales (roadside ditch) to the
proposed stormwater wetlands for treatment. This change is reflected in revised
calculations and supplemental sheets for Wetland #3.
2. Please see revised sheets C-4.1 and C-4.2 and also see stormwater wetland notes on
same page that state no side slope to exceed 3:1 side slope.
3. A deep pool (one) has been added to each of the stormwater wetlands as suggested.
4. Details for the outlet structures have been added to sheets C-4.1 and C-4.2.
5. Revisions to sheet L-1 has been made as requested.
6. A soils report is included with this package. Please note we have replaced the Bio-
retention area with a wetland area (Stormwater Wetland #4).
7. Bio-retention has been replaced with a wetland to meet BMP SHWT conditions
onsite.
Since e?y
Thomas Spaulding, PE, CFM
Spaulding & Norris, PA
cc: Belinda Henson - DWQ Regional Office
Bob Stafford - Stafford Land Company (via email)
Hal Owen - Hal Owen & Associates (via email)
Phune: [phone] * Fax: [phone] • 972 Trinity Road • Raleigh, North Carolina 27607
a Certified Woman-Owncd Business
HAL OWEN & ASSOCIATES, INC.
SOIL & ENVIRONMENTAL SCIENTISTS
P.O. Box 400,266 Old Coats Road
Lillington, NC 27546-0400
Phone [phone] / Fax [phone]
E-mail: [e-mail]
10 April 2009
Mr. Bob Stafford
Stafford Land Company
246 Valleyfield Lane
Southern Pines, NC 28387
Reference: Lillington Commercial (aka Riverside)
Soil Scientist Investigation for Stormwater Management
For Proposed Constructed Wetland
Dear Mr. Stafford,
A site investigation has been conducted for the above referenced property, located on the
northern side of US Hwy 401 and western side of Pine State Street, in Harnett County,
Lillington, North Carolina. The purpose of this investigation was to determine the characteristics
of the soils at the designated locations for proposed constructed wetland stormwater management
structures: This investigation was conducted in accordance with the USDA Field Book for
Describing and Sampling Soils and represents my professional opinion as a Licensed Soil
Scientist.
The Harnett County Soil Survey
shows that the proposed stormwater
treatment areas are underlain by soils of
the Marlboro series (MaB) and Nason
series (Na) (see Figure 1). The
existence of these soil types was not
confirmed at the site. The property, in
general, is less well drained than either
of these soil series. In addition, a small
drainageway crosses this property that
was apparently too small to map at the
scale of the soil survey and the soils in
the investigated areas are more similar
to the Rains and Wahee soil series.
Soil Science Investigations • Wetland Delineations, Permitting, and Consulting
Figure 1. NRCS Soil Survey Map
HAL OWEN & ASSOCIATES, INC.
Five soil profile descriptions (attached) were collected at the site and are indicated at
Figure 2. Profile 1 exhibited soil morphological characteristics indicating a seasonal high water
table (SHWT) depth of 18 inches below ground surface. It is estimated by soil characteristics
combined with topographical evidence at the site that the seasonal low water table (SLWT) is
about 32 inches below surface. Infiltration rates (permeability) range from 0.02 m/hr in the
massive clay layer below the SHWT to as high as 2 in/hr in the lighter textured soils above the
SHWT. The attached soil profile description provides the details of the boring.
Profile 2A exhibited soil morphological characteristics indicating a seasonal high water
table depth of 16 inches below ground surface. It is estimated by soil characteristics combined
with topographical evidence at the site that the seasonal low water table is about 32 inches below
surface. Infiltration rates (permeability) range from 0.02 in/hr in the massive clay layer below
the SHWT to as high as 2 in/hr in the lighter textured soils above the SHWT. The attached soil
profile description provides the details of the boring.
Profile 2B exhibited soil morphological characteristics indicating a seasonal high water
table depth of 20 inches below ground surface. It is estimated by soil characteristics combined
with topographical evidence at the site that the seasonal low water table is about 32 inches below
surface. Infiltration rates (permeability) range from 0.8 in/hr in the massive sandy clay loam
layer below the SHWT to as high as 2 in/hr in the lighter textured soils above the SHWT. The
attached soil profile description provides the details of the boring.
Profile 3 exhibited soil morphological characteristics indicating a seasonal high water
table depth of 12 inches below ground surface. It is estimated by soil characteristics combined
with topographical evidence at the site that the seasonal low water table is about 34 inches below
surface. Infiltration rates (permeability) range from 0.08 in/hr in the massive clay layer below
the SHWT to as high as 2 in/hr in the lighter textured soils above the SHWT. The attached soil
profile description provides the details of the boring.
Profile 4 exhibited soil morphological characteristics indicating a seasonal high water
table depth of 27 inches below ground surface. It is estimated by soil characteristics combined
with topographical evidence at the site that the seasonal low water table is about 44 inches below
surface. However, this site looks wetter than the soil morphological characteristics indicate.
Water was observed ponded on the surface of the ground very nearby, and the depth to water in
the bore hole was at 12 inches below surface one hour after it was dug out. Infiltration rates
(permeability) range from 0.08 in/hr in the massive clay layer below the SHWT to as high as 2
in/hr in the lighter textured soils above the SHWT. The attached soil profile description provides
the details of the boring.
Soil Science Investigations • Wetland Delineations, Permitting, and Consulting
HAL OWEN & ASSOCIATES, INC.
Soil Science Investigations • Wetland Delineations, Permitting, and Consulting
HAL OWEN & ASSOCIATES, INC.
The areas proposed for the constructed wetland stormwater management structures
appear well suited for that purpose and appear to have high potential for success. The seasonal
low water table is estimated to range from 32 to 44 inches below surface (Table 1). Maintaining
wedand hydrology throughout ' the' winter and early spring of a typical year should be
accomplishable with proper design.
Table 1. Ranges of Seasonal High Water Tables (SEMI) and Seasonal Low Water Tables
18 16 20
32 32 32
12 27
34 44
I appreciate the opportunity to provide this service and trust that you will feel free to call
on me again in the future. If you have any questions or need additional information, please
contact me at your convenience.
Sin ly
Hal Owen
Licensed Soil Scientist
CC: Tom Spaulding, Spaulding & Norris, PA
a
Soil Science Investigations • Wetland Delineations, Permitting, and Consulting
HAL OWEN & ASSOCIATES, INC. .
PO BOX 400, LILLINGTON, NC 27546
PHONE: [phone] PAX:,[phone]
W W W.RALOWENSOIL.COM
APPLICANT: Stafford Land C
ADDRESS: 246 Valleyffeld Ls
Southern Pines. N1
LOCATION OF SITE: "RiYerwQ
WATER SUPPLY: On-Site Well (]

NC PIN #:
COUNTY: Harnett
SOIL PROFILE DESCRIPTIONS
WY OWNER® AGENT:® PHONE: [phone]
e w DATE EVALUATED: March 2009
28387 PROPOSED FACILITY: Commercial &velopment
PROPERTY SIZE:
d"• NW of the intersection of US Hn 401 and Pine State Street. LOW=
Comm. Well ? Public ® EVALUATION METHOD: Augcr Boring ®, Pit ?
HORPLON -DEFm (lN) MATRIX MOTTLES TEXTURE STRUCTURE TEENNCE BOUNDARY NOTES
0-3 SL OR FR AS 2"/BR
3-8 SCL 2 M SBK FR CS 1"/Hit
8-22 C 1 M SBK FT CS 0.1"/HR
22-32 SCL 1 M SBK FI CS I"/HR
32-a C M VE 0.02"/HR
AWT SHWT Is" SLWT 32"
SOIL SERIES DRAINAGE PERMEABILITY
I COMMENTS: I J
6•
PR07n.R! ZA
HORIZON DEPTH (III MATRIX MOTTLES TEXTURE STRUCTUR E
TENCE BOUNDARY NOTES
Ap 0-7 SL OR FR CS 2.0"MIR
7-32 C I C SBK FI GW 0.17/HR
3248 C M VFI ow 0.0271H
AWT SHWT 16" SLWT 32"
SOIL SERIES DRAINAGE PERMEAB: LI TY
i COMMENTS:
PROFILE:- 2B
HORIZON DEPTH (IN) MATRIX MOTTLES TEXTURE STRUCTURE CO BOUNDARY NOTES
0-12 SL GR FR CS r4a
12-20 SL I M SBK PR GW 2"1HR
2046 SL M FR GW INER
4648 SCL M FR 0.8"4m
AWT SHWT 20" SLWT 32"
SOIL SERIES DRAINAGE PERMEABILrTY
COMMENTS:
LEGEND.DYABBI WATIONS FOR-SOIL PROFILE DESCRIPTIONS

TEXTURE . - : :1Vi6•IST CQNSISTEl?1CE
S - Sand ?- very Friable -

SL:. -.sandy Loam FI - F>r:' -
_ L
: Loam ,• ,, VPI -?ver??rrm
.. , _ .
Sc
16 satsdy _
- oam:
jlt
ME,

SiCL Self clay Loath
SG = Sandy Ca
74 ?1VG?T = AppareR?ater Tables
-

C . Cla
e.
SHWT .Seasonal •Ht Water"fabl
. . ? ic-. s lCti
i4
r - -'OL Y?' 1 ?7fia.SOi1ZLL LO.?, YY' 2 AU1E'i - .
„
-,.
gate

-Abrupt i ` s?Tnootlt
t

C -Clear
W Wad ti u
•c .... rt V -i _ ...._ U u.y FY V

r -Grad I ....irregular
u
D ;,Diffuse B ._ , Brokezl
t ?
_

-.Faint
... , common medium.. D =Disttiict _.

STIt?,JCT?JRE - '
1. =:v fine w -._ _. "vw v?teak. G M -Sin a C.
-:moderate::.: M _ -Massive....
-inedfirm
n8 ;..._. . _
:.• _ .: Cg,.. Crumb- -
4 -coarse GR . -Granular
5 - very-coarse SBK - Subangular Blocky
ABK -'Angular :Blocky: .
PL = Platy
PR - Prismatic

SOIL PROFILE DESCRIPTIONS
unf% TT T. • Z
HORIZON DEPTH (IN) MATRIX MOTTLES ' TEXTURE STRUCTURE ?C'E? BOUNDARY NOTES
0-3 SL GR FR AS 27/11R.
3-14 C 1 C SBK FI CS 0.1 /HR
14-34 F . C M VFI Gw 0.08"/HR
34_48 C M VFT 0.08"/1Bi
AWT SHWT 12" SLWT 34"
SOILSERIES DRAINAGE PERMEABILITY
? coMMt;NTS: ? 1
DDf%Wfi V A

HORIZON
DEPTH (IN)
MATRIX
MOTTLES
TEXTURE
STRUCTURE CONS
TEN B _
BOUNDARY
NOTES
0-12 SL GR FR CS 2"/HR
12-20 SL GR FR CS 2"/HR
20-29 SCL 2 M SBK FR/SS ow 1.5" HR.
27-3i C 1 C SBK FUSS ow 0.1"/HR
32-44 C M VFI CS 0.08"/HR
4448 C M VFI 0.08"/HR
AWT 12" SHWT 29" SLWT 44"
SOIL SERIES DRAINAGE PERNIEMEM
CObA4E?VTS: This ama looks wetter thaw soils indicate. Standmg water on surface nearby. Ram recently.
LEGEND OF ABBREVIATIONS`FOR SOIL PROVE E DESCRIPTIONS
TE 'TURE ?.. MOIST -CONSISTEl1TCE
S? ;VFR -Vriy:Fnable =
SL ` Sandy Loam
L Loam TVFI , - Very.Fuxn
SC1J Sandy Clay Loam ;EFI'

M ::.Silt Loam

Si?L-Silt C1agloam
SC,_ Sandy Clay: :: AW.F.- Apparent Water Table -
C CFay r 1(1.0. w
?.
_. SICr =?Sit3'-C SY.WTeasonal L±aw'?atr Fable
.

7:7 7
: w M Y
_` .4
A>=Abrat S smooth
C :bleat '" W Wavy n

G Cr a?lunl Weg?tl$t
. n r a r
II Douse B Broken
i

f -few :: 1 :.. fine : F: Faint
2 .. 'um .
- COISITnOn ._ ...: stimct
. j

STRUCTURE'
J. -.very fine w weak G. Single Grain
2 fine - m moderate _ ? M - Massive
3..__.medium strong . :. :: CR - Ciumb .. _
4 -coarse GR - Granular
5 -very coarse SBK - Subangular Blocky
Am - ;Angular Blocky
PL - Platy
PR - Prismatic

S4&7,-
_IV
SPAULDING & NORRIS, PA
Planning • Civil Engineering • Surveying
STORMWATER MANAGEMENT PERMIT
APPLICATION
For
RIVERWOOD COMMONS
LILLINGTON, HARNETT COUNTY, NORTH CAROLINA
Submitted to:
NCDENR
Division of Water Quality
512 North Salisbury Street
Raleigh, North Carolina 27604
Prepared for:
Stafford Land Company, Inc.
246 Valley Field Lane
Southern Pines, NC 28387
tt'yy?I ?-)Ca?i?f-rT S,. 4dqp
Submitted by:
G-1875 Y
epa? ? .? Spaulding & Norris, PA
s, ou?e4?Aj?oa 972 Trinity Road
Raleigh, North Carolina 27607
[phone]
DATE: December 4, 2007
Revised July 12, 2011
PROJECT NO.: 643-07
?ll
Phone: [phone] • Fax: [phone] • 972 Trinity Road • Raleigh, North Carolina 27607
a Certified Woman-Owned Business
TABLE OF CONTENTS
SECTION PAGE
Narrative I
Methodology I
Supporting Calculations 2-7
NCDENR Stormwater Requirements Print 8
USGS Map
9
Harnett County Soils Map 10-13
FEMA Floodplain Map 14
Stormwater Management Permit Application 15
BMP Supplements
16-34
High Density Commercial Subdivision
Deed Restriction & Protective Covenants 35
Stormwater Wetland Inspection and
Maintenance Agreement 36-39
Stormwater Wetland Drainage Area Map 44
Offsite Drainage Area Map 45
I. Introduction
Stafford Land Company, Inc wishes to develop a 7.55-Acre tract located in Lillington, NC
into a high-density commercial subdivision. The 7.55-Acre tract is bound by US 401 to
the South, Pine State Street to the East, a tract zoned Lillingt to the North and a tract
zoned Commercial to the East. The site, which is located NW of the intersection of US
401 and Pine State Street, is located in both the Cape Fear River basin and WS-IV
Protected Area watersupply watershed. Furthermore, the existing parcel has wetlands
located on the site and will have to be permitted under 404/401 regulations. Currently,
the project site is undeveloped. The site will be developed in phases, the first of which
will be a proposed bank located in Parcel 1. Infrastructure improvements will include
sanitary sewer, water and storm sewer. As a result of the site being located in a WS-IV
Protected Area water supply watershed, and having to meet Water Quality Certification
No.: 3402, multiple Stormwater Wetlands and a Bioretention device will be proposed in
order to treat Nitrogen, Phosphorus, fecal coliform, heavy metals and 85% TSS. The
total proposed impervious surface on the site is 179,053 SF. This is approximately
54.42% of the total site area. Subject to the requirements of NCDENR / DWQ Spaulding
& Norris, PA (S&N) has prepared a Stormwater Permit Application for the subject
property. This permit was based on the Stormwater Management Plan prepared by
Spaulding & Norris.
H. Calculation Methodology
All stormwater BMP devices provided with this stormwater management plan submittal
were designed according to State guidelines as listed in the current 2007 NC Stormwater
BMP Manual. The volume to be controlled from the 1" storm event was determined
utilizing the "Simple Method" as described by Schueler (1987). Please reference the
provided Drainage Area Maps for current topography and related C factors.
Supporting Calculations
SPAULDING & NORRIS PA
Planning . Civil Engineering . Environmental
Subject
Designed by
Checked by Date
i
?l = 3 t? 3U x r'Z x tZ A n
- ?-
144
li? -7

Sheet No. of
Job No.
Date
SPAULDIN & i_ ' ? T-t..RMS, PA
Planning • Civil Engineering • Environmental
of
Subject
Designed by
Checked by Date
-14 -7
Sheet No
Job No.
Date
• SPAULDING & NORRIS PA
Planning • Civil Engineering . Environmental
Subject
Designed by
Checked by
of
Date
_ i
14, q-e-
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1- o7 -
141,
j i
Sheet No.
job No.
Date
SPAULDING & NORRIS, PA
Planning • Civil Engineering . Environmental
Subject
Sheet No. of
Job No.
Date
Designed by Checked by Date
SPAULDING & NORRIS, PA
Planning . Civil Engineering . Environmental
Subject
Designed by
Checked by
Sheet No.
Job No. _
Date -
of
Date

NCDENR Stormwater Requirements Print
Print Page - NC Areas Subject to Phase H Post-Construction & Other Stormwater Progra... Page 1 of 1
NC Areas Subject to Phase II Post-Construction & other Stormwater Program Requirements --- -

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government (city or county) in your locabc-
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verify specific stormwater requirements
Areas subject to Stormwater Post-Construction
(Permitting) are based on existing programs and
Session Law 2006-246. NC Division of Water
Quality, 11/30/2007

Contact : DENR Region : Fayetteville County : HARNETT

Permitting :
Local
Basis :
WS-IV Protected Area
Type Water Supply

Watershed
Notes : Satisfies Phase II Requirements
http://204.211.239.202/stormwater/print.aspx?CHID=MT&XN41N=-78.87480666766012... 11/30/2007
USGS Map
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Name: LILLINGTON Location: 035' 25' 20.66" N 078° 48' 27.40" W
Date: 11/30/2007
Scale: 1 inch equals 1000 feet
Copyright
Harnett County Soils Map
TerraServer Image Courtesy of the USGS

Page 1 of 1
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Soil Map-Harnett County, North Carolina
Map Unit Legend
Lillington Commercial
Harnett County, North Carolina (NC085)
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
Co Coxville loam 2.9 4.6%
ExA Exum very fine sandy loam, 0 to 0.0 0.0%
2 percent slopes
GoA Goldsboro loamy sand, 0 to 2 3.7 5.8%
percent slopes
Ly Lynchburg sandy loam 4.1 6.4%
MaB Marlboro sandy loam, 2 to 6 6.9 10.7%
percent slopes
Na Nahunta loam 7.4 11.6%
NoA Norfolk loamy sand, 0 to 2 0.6 0.9%
percent slopes
NoB Norfolk loamy sand, 2 to 6 0.0 0.1%
percent slopes
Ra Rains sandy loam 10.5 16.4%
W Water 0.8 1.3%
WaB Wagram loamy sand, 0 to 6 27.0 42.2%
percent slopes
Totals for Area of Interest (AOI)
64.1
100.0%
USDA Natural Resources Web Soil Survey 2.0 11130/2007
?"l Conservation Service National Cooperative Soil Survey Page 3 of 3
FEMA Floodplain Map
Map Output
Page 1 of 1
Lillington Commercial
Wed Dec 5 10:08:20 EST 2007
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PEN150]11ERGiIIG TB H- PARTNER
N.C. Hoodplain Mapping Wormation 9;aen
On-Line Mapping Application Provided by the
North Carolina Floodplain Mapping program
Disclaimer: This is not a legally binding (FIRM) Flood
Insurance Rate bap and should not be used as such.
http:// 149.168.101.8/servletlcom.esn,esrimap.Esrimap? ServiceName=locator&ClientVersi... 12/5/2007
Stormwater Management Permit Application
DWQ USE ONLY
Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
Tltis form may be photocopied for use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
STAFFORD LAND COMPANY INC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
ROBERT STAFFORD
3. Mailing Address for person listed in item 2 above:
246 VALLEY FIELD LANE
City:SOUTHERN PINES State:NC Zip:28387
Phone: (919 ) 577-6870 Fax: (919 ) 577-6892
Email:staffordlandcoCCem1),ii-gmail com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
LILLINGTON COMMERCIAL
5. Location of Project (street address):
NW OF THE INTERSECTION OF PINE STATE STREET AND US 401
City:LILLINGTON County:HARNETT
6. Directions to project (from nearest major intersection):
NW OF THE INTERSECTION OF PINE STATE STREET AND US 401. SEE VICINITY MAP LOCATED
ON THE COVER SHEET OF THE PLAN SET.
7. Latitude:35.43 Longitude:-78.81 of project
8. Contact person who can answer questions about the project:
Name:Thomas Spaulding PE Telephone Number: (919 ) 854-7990
Email: [e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
®New
?Renewal ?Modification
Form SWU-101 Version 8.07 Page 1 of4
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number N/A and its issue date (if known) N/A
3. Specify the type of project (check one):
?Low Density ®High Density ?Redevelop ?General Permit ?Universal SMP ?Other
4. Additional Project Requirements (check applicable blanks):
?CAMA Major ®Sedimentation/Erosion Control ®404/401 Permit ?NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
AT ULTIMATE BUILDOUT STORMWATER FOR THIS PROTECT WILL BE TREATED WITH FOUR
PROPOSED STORMWATER WETLANDS. SEE NARRATIVE INCLUDED IN THE CALCULATIONS
2. Stormwater runoff from this project drains to the CAPE FEAR River basin.
3. Total Site Area: 7.55 acres 4. Total Wetlands Area: 0.44 acres
5. 100' Wide Strip of Wetland Area: N/A acres (not applicable if no wetlands exist on site)
6. Total Project Area**:7.55 acres 7. Project Built Upon Area:56.7 %
8. How many drainage areas does the project have?l
9. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information Drainage Area 1 Drainage Area 2
Receiving Stream Name CAPE FEAR RIVER
Stream Class & Index No. WS-IV 18-(10.5)
Drainage Area (so 3,236,254
Existing Impervious* Area (so 1,092,786
Proposed Impervious*Area (so 186,553
% Impervious* Area (total) 39.5%
Impervious* Surface Area Drainage Area 1 Drainage Area 2
On-site Buildings (so 51,215
On-site Streets (so 20,807
On-site Parking (so 114,531
On-site Sidewalks (so
Other on-site (so
Off-site (so 1,092,786
Total (sf): 1,279,339
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation.
Form SWU-101 Version 8.07 Page 2 of 4
10. How was the off-site impervious area listed above derived?OFFSITE IMPERVIOUS SURFACE WAS
APPROXIMATED BY BRINGING AN AERIAL PHOTO INTO THE DWG FILE AT AN APPROXIMATE
SCALE AND DELINEATING THE IMPERVIOUS SURFACE.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, size and the allowable built-upon area for each lot must be provided as an attachment.
Form DRPC-1 High Density Commercial Subdivisions
Form DRPC-2 High Density Developments with Outparcels
Form DRPC-3 High Density Residential Subdivisions
Form DRPC-4 Low Density Commercial Subdivisions
Form DRPC-5 Low Density Residential Subdivisions
Form DRPC-6 Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding
on all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Low Density Supplement
Curb Outlet System Supplement
Off-Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of4
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality
(DWQ). A complete package includes all of the items listed below. The complete application package
should be submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on
the interactive online map at littp:Hli2o.ei-tr.state.nc.us/sti/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMF
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soil report
• Three copies of plans and specifications (sealed, signed & dated), including:
- Development/ Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
_5
5
r5 -

- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off-site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or
Mailing Address
City:_
Phone:
Email:
VIII. APPLICANT'S CERTIFICATION
State: Zip:
Fax: ( }
I, (print or type name of person listed in General Information, item 2) ROBERT STAFFORD
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
w1l A11 nT7 1nnn
Date:____7- T - / /
Form SWU-101 Version 8.07 Page 4 of 4
BMP Supplements
Permit Number
(to be provided by DWQ)
p?p?WATeR?G
MAAA
- o
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND 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 the required information.
F I-
Project name Lillington Commercial
Contact name P. Dan Pabst, PE
Phone number 919.854.7990
Date December 4, 2007
Drainage area number 1
-f. -9 d?+ ?F ? z'u Y•. ?..'?.. .?` ? ?..?? yv Yt m s'G .„. <' ;9 %`Y ?`k_'S"G???3i. Z

Site Characteristics
Drainage area 69,260 ft
Impervious area 54,886 fiz
Percent impervious 79.2%%
Design rainfall depth 1.0 inch
Peak Flow Calculations
Does this project require prelpost control of the 1-yr 24-hr peak N (Y or N)
flow?
1-yr, 24-hr runoff depth in
1-yr, 24-hr intensity in/hr
Pre-development 1-yr, 24-hr runoff ft3/sec
Post-development 1-yr, 24-hr runoff ft3/sec
PrelPost 1-yr, 24-hr peak control ft3/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 4,444 ft3 OK
Depth of temporary pool/ponding depth (Dpl qJ 9 in OK
Drawdown time 3.50 days OK
Diameter of orifice 1.25 in OK
Coefficient of discharge (Co) used in orifice diameter
0.60 (unittess)
calculation
Driving head (H,) used in the orifice diameter calculation 0.250 ft OK
Storage Volume: SR Waters Parameters
1-yr, 24-hr depth in
Pre-development 1-yr, 24-hr runoff ft3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 61924 fe OK
Shallow Land 2,739 ft OK
The shallow land percentage is: 40%
Shallow Water
Form SW401-Wetland-Rev.1 2,777 fe OK
Parts I and 11. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
The shallow water percentage is:
Deep Pool
Forebay portion of deep pool (pretreatment)
The forebay surface area percentage is:
Non-forebay portion of deep pool
The non-forebay deep pool surface area percentage is:
Total of wetland zone areas
Add or subtract the following area from the zones
Topographic Zone Elevations
Temporary Pool
Shallow Land (top)
Permanent Pool
Shallow Water (top)
Deep Pool (top)
Most shallow point of deep pool's bottom
Deepest point of deep pool's bottom
Design must meet one of the following two options:
This design meets Option #1,
Deep pool is Onches below SLWT, If yes:
SLWT (Seasonally Low Water Table)
This design meets Option #2,
Has a clay liner
If yes:
Depth of topsoil above clay liner
40%
716 ft
10%
692 fe
10%
6,924 ft
0.00 ft
OK
Topographic Zone Depths
Temporary Pool
Shallow Land
Permanent Pool
Shallow Water
Deep Pool (shallowest)
Deep Pool (deepest)
Planting Plan
Are cattails included in the planting plan?
Number of Plants in planting plan recommended:
Herbacious (4inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5" dbh)
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (4inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5' dbh)
Additional Information
Can the design volume be contained?
Does volume in excess of the design volume flow evenly
distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Are calculations for supporting the design volume provided in the
application?
Is BMP sized to handle all runoff from ultimate build-out?
OK
OK
162.75 fmsl
162.00 fmsl
161.50 fmsl
159.50 fmsl
159.50 fmsl
N (Y or N)
fmsl
Y
4 in
9 in OK
6 in OK
24 in OK
24 in OK
N (Y or N) OK
210
140
35
210
140
35
Y (Y or N)
N (Y or N)
0 ft
N (Y or N)
Y (Y or N)
Y (Y or N)
OK
OK
OK
OK
JOLUtAG SS 0\5(_KAOl6 0 ONTO
fl iro SInG atrc,r+
V o m u m C- 3:S Qwe. CL I+A (L 6 6 0 S NTO
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OK
OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 2 of 3
Permit Number
(to be provided by DWQ)
Is the BMP located in a recorded drainage easement with a Y (Y or N) OK
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is: 3.4 :1 OK
Approximate wetland length 154.0 ft
Approximate wetland width 45.0 ft
This approx. surface area is within this number of square
Approximate surface area using length and width provided 6,930 ft? feet of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 3 of 3
Permit No.
(to be provided by DWQ)
77' 7 '77
111. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package
will result in a request for additional information. This will delay final review and approval of the project. Initial in the space
provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below.
If a requirement has not been met, attach justification.
Initials Pagel Plan
Sheet No.
G - 310 1. Plans (1" - 50' or larger) of the entire site showing:
G - 5. 1 - Design at ultimate build-out,
G - S. 2 - Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Wetland dimensions (and length to width ratio),
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
-DE- C-9. 1 2. Plan details (1" = 50' or larger) for the wetland showing:
G- ?l • 2 - Wetland dimensions (and length to width ratio)
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable),
- Overflow device, and
- Boundaries of drainage easement.
L-91 ( 3. Section view of the wetland (1" = 20' or larger) showing:
G- cl 2 - Side slopes, 3:1 or lower
- Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner: SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
4. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species (not including cattails),
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
D C--4 • 1 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
L- y. Z drainage area is stabilized.
?P CA-L c. 6. The supporting calculations (including drawdown calculations).
Q, Cx-K
z Nc t-c a 0 7. A copy of the signed and notarized inspection and maintenance agreement.
SW401-Wetland-Rev.1 Part III, page 1 of 2
Permit No.
(to be provided by DWQ)
kAIcw OGo 8. A copy of the deed restriction.
SW401-Wetland-Rev.1 Part III, page 2 of 2
Permit Number
(to be provided by DWQ)
o??F W ATF9QG
F-WA
NCDENR °
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all the required information.
I - PROJECT INFORMATION
Project name Lillington Commercial
Contact name P. Dan Pabst, PE
Phone number 919.854.7990
Date
Drainage area number
Peak Flow Calculations
December 4, 2007
Does this project require prelpost control of the 1-yr 24-hr peak
N (Y or N)
flow?
1-yr, 24-hr runoff depth in
1-yr, 24-hr intensity in/hr
Pre-development 1-yr, 24-hr runoff ft3/sec
Post-development 1-yr, 24-hr runoff ft3/sec
Pre/Post 1-yr, 24-hr peak control ft3/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 3,857 ft3 OK
Depth of temporary pool/ponding depth (Dp„ t) 9 in OK
Drawdown time 3.50 days OK
Diameter of orifice 1.25 in OK
Coefficient of discharge (CD) used in orifice diameter
0.60 (unitless)
calculation
Driving head (Ho) used in the orifice diameter calculation 0.250 ft OK
Storage Volume: SR Waters Parameters
1-yr, 24-hr depth in
Pre-development 1-yr, 24-hr runoff ft3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 5,578 fe OK
Shallow Land 1,989 fe OK
The shallow land percentage is: 36%
Shallow Water 2,273 fe OK
Form SW401-Wetland-Rev.1 Parts I and H. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
The shallow water percentage is: 41%
Deep Pool
Forebay portion of deep pool (pretreatment) 808 ft2 OK
The forebay surface area percentage is: 14%
Non-forebay portion of deep pool 508 ftz OK
The non-forebay deep pool surface area percentage is: 9%
Total of wetland zone areas 5,578 fe OK
Add or subtract the following area from the zones 0.00 fe
Topographic Zone Elevations
Temporary Pool
Shallow Land (top) 168.75 fmsl
Permanent Pool
Shallow Water (top) 168.00 fmsl
Deep Pool (top) 167.50 fmsl
Most shallow point of deep pool's bottom 165.50 fmsl
Deepest point of deep pool's bottom 165.50 fmsl
Design must meet one of the following two options:
This design meets Option #1,
N (Y or N)
Deep pool is 6 inches below SLWT, If yes:
SLWT (Seasonally Low Water Table) fmsl
This design meets Option #2,
Has a clay liner Y
If yes:
Depth of topsoil above clay liner 4 in
Topographic Zone Depths
Temporary Pool
Shallow Land 9 in OK
Permanent Pool
Shallow Water 6 in OK
Deep Pool (shallowest) 24 in OK
Deep Pool (deepest) 24 in OK
Planting Plan
Are cattails included in the planting plan? N (Y or N) OK
Number of Plants in planting plan recommended:
Herbacious (41inch diameter) 168
Shrubs/small trees (1 gallon or larger) 112
Trees (1.5' dbh) 28
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (41inch diameter) 168 OK
Shrubs/small trees (1 gallon or larger) 112 OK
Trees (1.5' dbh) 28 OK
Additional Information
Can the design volume be contained? Y (Y or N) OK
Does volume in excess of the design volume flow evenly
N
(Y or N)
vo w M e s s b? S G N h ?(o E? S r T 6
distributed through avegetated filter? P "V04,t0G o tr?t? .
What is the length of the vegetated filter? 0 ft
Does the design use a level spreader to evenly distribute flow? N (Y or N) Vo u M E s o l sC1t-4 A ac, 6 0 r ro
Are calculations for supporting the design volume provided in the
Y
(Y or N) ?? s t n e b k rc i ,
OK
application?
Is BMP sized to handle all runoff from ultimate build-out? Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts I and 0. Project Design Summary, Page 2 of 3
Permit Number
(to be provided by DWQ)
Is the BMP located in a recorded drainage easement with a
recorded access easement to a public Right of Way (ROW)? Y (Y or N) OK
The length to width ratio is: 5.01 OK
Approximate wetland length 164.0 ft
Approximate wetland width 33.0 ft
This approx. surface area is within this number of square
Approximate surface area using length and width provided 5,412 ft feet of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 3 of 3
Permit No.
(to be provided by DWQ)
fll. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package
will result in a request for additional information. This will delay final review and approval of the project. Initial in the space
provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below.
If a requirement has not been met, attach justification.
Initials Page/ Plan
Sheet No.
G- 3. U 1. Plans (1" - 50' or larger) of the entire site showing:
G - 5 - Design at ultimate build-out,
L- S Z - Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Wetland dimensions (and length to width ratio),
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
C-ti. ( 2. Plan details (1" = 50' or larger) for the wetland showing:
C - 4 2 - Wetland dimensions (and length to width ratio)
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable),
- Overflow device, and
- Boundaries of drainage easement.
3. Section view of the wetland (1" = 20' or larger) showing:
G q,2 - Side slopes, 3:1 or lower
- Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner: SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
4. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species (not including cattails),
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
DW 1 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
n C- - y - 2- drainage area is stabilized.
-D ? 6. The supporting calculations (including drawdown calculations).
Scr-k
(2 7. A copy of the signed and notarized inspection and maintenance agreement.
6oc)v-
SW401-Wetland-Rev.1 Part III, page 1 of 2
Permit No.
(to be provided by DWQ)
W?c c.uGL'? 8. A copy of the deed restriction.
SW401-Wetland-Rev.1 Part 111, page 2 of 2
Permit Number
(to be provided by DWQ)
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND 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 the required information.
o`'?F w n r?R?G
J -i
1. PROJECT INFORMATION
Project name Riverwood Commons
Contact name Thomas Spaulding, PE
Phone number 919.854.7990
Date July 7, 2011
Drainage area number 3
II. DESIGN INFORMATION
Site Characteristics
Drainage area 64,033 ft2
Impervious area 53,578 ft2
Percent impervious 83.7%%
Design rainfall depth 1.0 inch
Peak Flow Calculations
Does this project require pre/post control of the 1-yr 24-hr peak N (Y or N)
flow?
1-yr, 24-hr runoff depth in
1-yr, 24-hr intensity in/hr
Pre-development 1-yr, 24-hr runoff ft3/sec
Post-development 1-yr, 24-hr runoff ft3/sec
Pre/Post 1-yr, 24-hr peak control ft3/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 4,269 ft3
Depth of temporary pool/ponding depth (DP,antJ 12 in
Drawdown time 2.00 days
Diameter of orifice 1.25 in
Coefficient of discharge (CD) used in orifice diameter
0.60 (unitless)
calculation
Driving head (Ho) used in the orifice diameter calculation 0.330 ft
Storage Volume: SR Waters Parameters
1-yr, 24-hr depth in
Pre-development 1-yr, 24-hr runoff ft3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft3
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 5,198 ft2
Shallow Land 2,030 ft2
The shallow land percentage is: 39%
Shallow Water 2,132 ft2
The shallow water percentage is: 41%
OK
OK
OK
OK
Provide calculations to support this driving head.
OK
OK
OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
Deep Pool
Forebay portion of deep pool (pretreatment)
The forebay surface area percentage is:
Non-forebay portion of deep pool
The non-forebay deep pool surface area percentage is:
Total of wetland zone areas
Add or subtract the following area from the zones
Topographic Zone Elevations
Temporary Pool
Shallow Land (top)
Permanent Pool
Shallow Water (top)
Deep Pool (top)
Most shallow point of deep pool's bottom
Deepest point of deep pool's bottom
Design must meet one of the following two options:
This design meets Option #1,
Deep pool is 6'inches below SLWT, If yes:
SLWT (Seasonally Low Water Table)
This design meets Option #2,
Has a clay liner
If yes:
Depth of topsoil above clay liner
Topographic Zone Depths
Temporary Pool
Shallow Land
Permanent Pool
Shallow Water
Deep Pool (shallowest)
Deep Pool (deepest)
Planting Plan
Are cattails included in the planting plan?
Number of Plants in planting plan recommended:
Herbacious (41inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5" dbh)
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (4'inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5" dbh)
Additional Information
Can the design volume be contained?
Does volume in excess of the design volume flow evenly
distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Are calculations for supporting the design volume provided in the
application?
Is BMP sized to handle all runoff from ultimate build-out?
Is the BMP located in a recorded drainage easement with a
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
603 ft2 OK
12%
433 ft2 OK
8%
5,198 ft2 OK
0.00 ft2
163.00 fmsl
162.00 fmsl
161.50 fmsl
159.50 fmsl
159.50 fmsl

N (Y or N)
fmsl
Y
4 in

12 in OK
6 in OK
24 in OK
24 in OK

N (Y or N) OK
156
104
26
156 OK
104 OK
26 OK
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
?y
0 ft
N (Y or N) Show how flow is evenly distributed.
?-E
'
Y (Y or N) 0k
Y (Y or N) OK
Y (Y or N) OK
5.4 :1 OK
Form SW401-Wetland-Rev.1 Parts I and 11. Project Design Summary, Page 2 of 3
Permit Number
(to be provided by DWQ)
Approximate wetland length 173.0 ft
Approximate wetland width 32.0 ft
Approximate surface area using length and width provided 5,536 ftz This approx. surface area is within this number of square
feet of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 3 of 3
Permft No.
(to be provided by DWQ)
III. REQUIREWTEMS CHECKLIST .
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package
will result in a request for additional information. This will delay final review and approval of the project. Initial in the space
provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below.
If a requirement has not been met, attach justification.
Initials Pagel Plan
Sheet No.
-D 1. Plans (1" - 50' or larger) of the entire site showing:
G- 5, ? - Design at ultimate build-out,
G- S. 2 - Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Wetland dimensions (and length to width ratio),
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
Gam, I 2. Plan details (1" = 50' or larger) for the wetland showing:
G -e-f•2_ - Wetland dimensions (and length to width ratio)
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable),
- Overflow device, and
- Boundaries of drainage easement.
?C G-y, I 3. Section view of the wetland (1" = 20' or larger) showing:
Side slopes, 3:1 or lower
- Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner. SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
s1 _ 4. A detailed planting plan (1' = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species (not including cattails),
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
P ?"? • 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
G- LI drainage area is stabilized.
-?? 6. The supporting calculations (including drawdown calculations).
acr-,<
GA, -?-
7. A copy of the signed and notarized inspection and maintenance agreement.
60C't<'
SW401-Wetiand-Rev.1 Part III, page 1 of 2
Permit No.
(to be provided by DWQ)
8. A copy of the deed restriction.
SW401-Wetland-Rev.1 Part III, page 2 of 2
Permit Number
(to be provided by DWQ)
F vv n rF
o?ry I CR?G
WDENR °
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WETLAND SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part lll) must be printed, filled out and submitted along with all the required information.
I. PROJECT INFORMATION
Project name Riverwood Commons
Contact name Thomas Spaulding, PE
Phone number 919.854.7990
Date July 7, 2011
Drainage area number 4
II. DESIGN INFORMATION
Site Characteristics
Drainage area 44,867 ftz
Impervious area 17,860 ft2
Percent impervious 39.8%%
Design rainfall depth 1.0 inch
Peak Flow Calculations
Does this project require pre/post control of the 1-yr 24-hr peak N (Y or N)
flow?
1-yr, 24-hr runoff depth in
1-yr, 24-hr intensity in/hr
Pre-development 1-yr, 24-hr runoff ft3/sec
Post-development 1-yr, 24-hr runoff ft3/sec
Pre/Post 1-yr, 24-hr peak control ft3/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 3,630 ft3
Depth of temporary pool/ponding depth (Dpl,,,) 9 in
Drawdown time 2.00 days
Diameter of orifice 1.25 in
Coefficient of discharge (Co) used in orifice diameter
0.60 (unitless)
calculation
Driving head (Ho) used in the orifice diameter calculation 0.250 ft
Storage Volume: SR Waters Parameters
1-yr, 24-hr depth in
Pre-development 1-yr, 24-hr runoff ft3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft 3
Volume provided ft3
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 4,860 ftz
Shallow Land 1,944 ftz
The shallow land percentage is: 40%
Shallow Water 1,945 ft2
The shallow water percentage is: 40%
OK
OK
OK
OK
OK
OK
OK
OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
Deep Pool
Forebay portion of deep pool (pretreatment)
The forebay surface area percentage is:
Non-forebay portion of deep pool
The non-forebay deep pool surface area percentage is:
Total of wetland zone areas
Add or subtract the following area from the zones
Topographic Zone Elevations
Temporary Pool
Shallow Land (top)
Permanent Pool
Shallow Water (top)
Deep Pool (top)
Most shallow point of deep pool's bottom
Deepest point of deep pool's bottom
Design must meet one of the following two options:
This design meets Option #1,
Deep pool is 6-inches below SLWT, If yes:
SLWT (Seasonally Low Water Table)
This design meets Option #2,
Has a clay liner
If yes:
Depth of topsoil above clay liner
Topographic Zone Depths
Temporary Pool
Shallow Land
Permanent Pool
Shallow Water
Deep Pool (shallowest)
Deep Pool (deepest)
Planting Plan
Are cattails included in the planting plan?
Number of Plants in planting plan recommended:
Herbacious (4'inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5" dbh)
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (4'inch diameter)
Shrubs/small trees (1 gallon or larger)
Trees (1.5" dbh)
Additional Information
Can the design volume be contained?
Does volume in excess of the design volume flow evenly
distributed through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Are calculations for supporting the design volume provided in the
application?
Is BMP sized to handle all runoff from ultimate build-out?
Is the BMP located in a recorded drainage easement with a
recorded access easement to a public Right of Way (ROW)?
The length to width ratio is:
583 ft2 OK
12%
388 ft2 OK
8%
4,860 ft2 OK
0.00 ft 2
167.75 fmsl
167.00 fmsl
166.50 fmsl
164.50 fmsl
164.50 fmsl

N (Y or N)
fmsl
Y
4 in

9 in OK
6 in OK
24 in OK
24 in OK

N (Y or N) OK
150
100
25
156 OK
104 OK
26 OK
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
0 ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
3.1 :1 OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 2 of 3
Permit Number
(to be provided by DWQ)
Approximate wetland length 125.0 ft
Approximate wetland width 40.0 ft
Approximate surface area using length and width provided 5,000 ft2 This approx. surface area is within this number of square
feet of the entire wetland surface area reported above:
Will the wetland be stabilized within 14 days of construction? Y (Y or N) OK
Form SW401-Wetland-Rev. 1 Parts I and II. Project Design Summary, Page 3 of 3
Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package
will result in a request for additional information. This will delay final review and approval of the project. Initial in the space
provided to indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below.
If a requirement has not been met, attach justification.
Initials Pagel Plan
- Sheet No.
? . 0
1. Plans (1" - 50' or larger) of the entire site showing:
-? ; ! - Design at ultimate build-out,
Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Wetland dimensions (and length to width ratio),
- Pretreatment system,
Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
2. Plan details (1" = 50' or larger) for the wetland showing:
- Wetland dimensions (and length to width ratio)
- Pretreatment system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build-out,
- Off-site drainage (if applicable),
- Overflow device, and
- Boundaries of drainage easement.
G - 3. Section view of the wetland (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Wetland layers
All wetlands: Shallow land depth, shallow water depth, deep pool depth
Option 1, no clay liner: SLWT depth
Option 2, clay liner: Depth of topsoil on top of liner, liner specifications
4. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species (not including cattails),
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C?47_ 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
drainage area is stabilized.
G,4? c• I7? '`? 6. The supporting calculations (including drawdown calculations).
Gpl7i 27K- 7. A copy of the signed and notarized inspection and maintenance agreement.
?L 'JL? fig, 8. A copy of the deed restriction.
SW401-Wetland-Rev.1 Part III, page 1 of 1
High Density Commercial Subdivision Deed Restriction & Protective
Covenants
High Density Commercial Subdivisions
Deed Restrictions & Protective Covenances
In accordance with Title 15 NCAC 2H.1000, the Management Regulations, deed restrictions and
protective covenants are required for High Density Commercial 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, -obE'-c , 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
within the project known as L.-1 LL-1 N 6TO N C_0 t-k" GNC.I A 1...-
1. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number , as issued by the Division of Water Quality
under NCAC 2H. 1000.
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.
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 square feet. {OR, if the
proposed built-upon area per lot will vary, please use the following format & language (in bold):
The maximum built-upon area per lot, in square feet, is as listed below:
Lot # BUA Lot # BUA Lot # BUA Lot # BUA
1 324500 2. 331 600 3 57s2)o If ?Gr,5w,
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.
7. 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.
8. The owner of each lot, whose ownership is not retained by the permittee, is required to submit a
separate stormwater permit application to the Division of Water Quality and receive a permit
prior to construction. n n
Signature: /-161 [A EV Date: I2---o4 'O 7
I, rc?Cy 1-ea Notary Public in the
State of A I)V-'V1 C OI i 0 o, County of ? 0-
do hereby certify that }2?be V-}- I ?T'Tc??G7 personally appeared
before me this the day of lhe-C-e m ?-e,?' 20 O' J , and acknowledge
the due exe ution of the foregoing instrument. Witness my hand and official seal,,,,...
SEA F ERGS;
11
C,?O?AR?- off;
Sign e
?-
My Commission expires 1Z ( C)
Form DRPC-1 Rev.1 Page 1 of 1
.._F COV.•
Stormwater Wetland Inspection and Maintenance Agreement
Stormwater Wetland Inspection and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
- Immediately after the stormwater wetland is established, the wetland plants will
be watered twice weekly if needed until the plants become established
(commonly six weeks).
- No portion of the stormwater wetland will be fertilized after the first initial
fertilization that is required to establish the wetland plants.
- Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
- Once a year, a dam safety expert will inspect the embankment.
After the wet detention pond is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of inspection and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element: Potential problem: How I will remediate the problem:
The entire BMP Trash/debris is resent. Remove the trash/debris.
The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to
wetland erosive gullies have formed. remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application
a Vegetation is too short or too Maintain vegetation at a height of
long. approximately six inches.
The inlet device: pipe or The pipe is clogged (if Unclog the pipe. Dispose of the
swale applicable). sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the Regrade the swale if necessary to
swale (if applicable). smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
BMP element:
The forebay
The deep pool, shallow
water and shallow land
areas
Potential
Sediment has accumulated in
the forebay to a depth that
inhibits the forebay from
functioning well.
Erosion has occurred.
Weeds are present.
Algal growth covers over
50% of the deep pool and
shallow water areas.
Cattails, phragmites or other
invasive plants cover 50% of
the deep pool and shallow
water areas.
Shallow land remains flooded Unclog the outlet device
more than 5 days after a immediately.
storm event.
Plants are dead, diseased or
dying.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Sediment has accumulated
and reduced the depth to 75%
of the original design depth
of the deep pools (see
diagram below).
How I will remediate the problem:
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand. If a pesticide is used, wipe it
on the plants rather than spraying.
Consult a professional to remove
and control the algal growth.
Remove the plants by wiping them
with pesticide (do not spray) -
consult a professional.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Prune according to best professional
practices.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
BMP element: Potential problem How I will remediate the problem:
The embankment A tree has started to grow on Consult a dam safety specialist to
the embankment. remove the tree.
An annual inspection by an Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
Evidence of muskrat or Use traps to remove muskrats and
beaver activity is present. consult a professional to remove
beavers.
The micropool Sediment has accumulated Search for the source of the
and reduced the depth to 75% sediment and remedy the problem if
of the original design depth possible. Remove the sediment and
(see diagram below). dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Plants are growing in the Remove the plants, preferably by
micropool. hand. If a pesticide is used, wipe it
on the plants rather than spraying
The outlet device Clogging has occurred. Clean out the outlet device. Dispose
of the sediment off-site.
The outlet device is damaged Repair or replace the outlet device.
The receiving water Erosion or other signs of Contact the NC Division of Water
damage have occurred at the Quality 401 Oversight Unit at 919-
outlet. 733-1786.
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Print name:Robert Stafford
Title: nw N i;K
Address: 24? V/t•(..t_GN( IF IL'L,p L,hNC ; sour,rE&N PlNSNli7¢?y
Note: The legally responsible party should not be a homeowners association unless more than 501/o of
the lots have been sold and a resident of the subdivision has been named the president.
I, t-et? V,-S 0 a Notary Public for the State of
?? CGv'O County of Ole, , do hereby certify that
010 ey-E- s•'r`G k!? personally appeared before me this L(+L"
day of TY-( -eA\,?qC? , ?,DD and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
?P Sao TA R?GO
z
??UBL\y?v
COON -
SEAL
2.
My commission expires H - 12-- 11--
Date: 1 Z-opt - o ?
Date:.
Stormwater Wetland Drainage Area Map
Offsite Drainage Area Map