20072163 Ver 2_CD Stormwater Info_20110923

TRANSMITTAL
To:
NCDWQ
Wetlands, Buffers & Stormwater Compliance
Sending:
® Attached
? Shop Drawings
? Copy of Letter
? Total Quantity
Date: 9/22/2011
Attention: Annette Lucas
Job Number: 643-07 ° z
Re: Riverwood Commons c
Lillington, Harnett County, NC
DWQ Project: 07-2163 V2
? Under Separate Cover via: a
? Prints ® Plans ® Other:
? Change Order ? Samples
? Reproducible ? Specification
Copies Date Description --1
1 9/22/2011 Written Response to August 23, 2011, Comments
1 9/22/2011 Revised Stormwater Management Plans
1 9/22/2011 Revised Stormwater Management Calculations

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
Comments:
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.
?2 fZ(///??y ?IlLiclcL,-,Iii w)l lJ
Copy to:
Thomas Spaull i g, PE
cn
m
v
r•,a
c?
N
TRANSMITTAL
To:
NCDWQ
Wet[ands, Buffers & StormwatoI- CO inp] iance.
Sending:
ED Attached
? Shop Drawings
? Copy of Letter
? Total Quantith'
SPAULDING & NORRIS, PA
111,mnmu • ('it it Lm-mriccrim-, • Suntr lilt!
Da Le. 9/22/2011
Attention: Annette Lucas
,Job Number: 643-07
Re: Rivenvood Commons
Lillington, Harnett Counh% NC
1711'Q Project: 07-216,3 N•2
? Under Separate Cover iria:
? Prints 0 Plans ® Other:
? Change Order ? Samples
? Reproducible ? Specification
Copies Date Description
1 9/22'2011 Written Response to August 2-J,201 i. Comments
t 9/2-2/2011 Re\iscd Stormwater.Management Plans
9/22/2oil Revised Stormwater Management Calculations

Transmitted for-:
® Your use
As Requested
? Rcyiet?' ??1aci tolnnient
? Approved as Submittetl
? (Approved as Noted
? Returned for Corrections
? Copies for Approval
? Distribution Copies
? Corrected prints
I Comments:
Please accept the enclosed doeuments for the above referenced project. This infor111ation h.as
been revised to address the Request for Additional Information letter dated ,June 17, 2011, and
signed by Belinda Henson, Regional Supen-isor. Please let us know- if you have any additional
comments or requests. Thank you for your assistance with this prryiert.
?r 1?.Lf'%'I4L .? iLIL?KLr 1 LJ t'
Copy to: Thomas 5paul?ri t'g, PE
?lL'1.. L" 1?,1 , .. .? ?,-;i? • 1 1 1 k ?l ill _
,i i rnl Lhe .1 ti}FILfF. -' ?'-`Il': •1 t'fii7lli '-...
SCYC [ G & NCIRRI, PA
PL31]II111 • C I % II z]] lllft'] l]_]ux . tiill?'c iYl{?
INT
September 22, 2011
Ms. Annette Lucas
DWQ Central Office
Wetlands, Buffers & Stormwater Compliance & Permitting Unit
1550 Mail Service Center
Raleigh, North Carolina 27699-1550
Re: Riverwood Commons (AKA Lillington Commercial)
DWQ Project # 07-2153 V2 Harnett County
Dear Annette,
This letter is written in response to Belinda Henson's letter dated August 23. 2011,
requesting additional information for the above named project. Please see the attached
revised stormwater management permit application report and revised plans.
Additional Information Requested
1. The entrance driveway grades have been revised such that the roadway is super
elevated and now flows to one side. All of the roadway is collected in the roadside
ditch #1 shown on sheet C-4.1. We have provide a detail of the roadside swale.
Also, please see attached calculations for the swale depth of flow and velocity at the
termination point of roadside swale #1.
2. 1 apologize for this comment coming back. In conversations with our CAD designers
the contour lines were not properly labeled and were showing up as 0.5 ft contours
to show the different levels in the wetlands. They have been labeled. I now
understand your comment and frustration.
3. Please see added details with charts for both risers and anti-seep collars on sheet
C-4.2
4. Please see revised volume and outlet sizing calculations in the storm report. We
have tagged all sheets that had been revised for your ease of review,
Sincerely.
L?
Thomas Spaulding, PE, CFM
Spaulding & Norris, PA
cc: Beverly Strickland - DWQ Program Development
Bob Stafford - Stafford Land Company (via email)
Hal Owen -- Hal Gwen & Associates (via email)
Phone: [phone] + Fii4: (919) Si4-?92'` • ??"? Trnul% Road • Ride ---h. Norlh C aiolinsi 2 )"1-
AJ"fA1*
HCDENR
North Carolina Department of Environment and Natural Resources
Division of Vstar Quality
Beverly Eaves Perdue Calepn -1 Sullins Dee Freeman
Gatiernor Direlor Secretary
August 23, 2011
DWQ Project # 07-2163 V2
Harnett County
CERT]FIED 11'I.A11. 7010 187{1 0003 4774 7341
RF7'I?RN RFCFIPT REQUIFSTF,D
Mr. Bob Stafford
Stafford Land Ct?tnpany Inc.
246 Valley Field Lane
Southern Pines, NC 28387
Subjeei Property: Riverwood Commons (AKA Lillington Commercial)
UT to Cape Fear River [03(}607, 18 (16.3)- WSIV, CA]
REQ[1EST FOR MORE JUNFOR-MATION
Dear Mr. Stafford:
On March 1-8, 201 L the Division of Water Quality (DWQ) received your application dated March 22,
2011 and additional information that you submitted was received by DV?'Q on May . 201 I and Jule 15.
201 1 to impact 0.231 acres of wetlands to construct the proposed commercial sen,ices park- The DWQ
has determined that your application is still incc}tnplete acid/or provided inaccurate infoi-rnation ay
discussed Inlow. The DWQ will require additional information in order to process your application to
impact protected wetlands and/or streams on the subject property. Therefore, unless we receive the
addilional information requested below, we will have to move toward denial ofyour application as
required by 15A NCAC 21-1,0506 and will place this project on hold as mc:omplew until we receive this
additional information- Please provide: the following information so that we may continue to review your
project.
Additional Information Requested.
The runoff from the driveway that passes over Wetland 3 must be conveyed to the forebay of
Wetland 3. It is riot acceptable to drop this runoff into the retain treatment area of the wetland
without pretreatment.. In addition, please provide contours for the proposed swales that meet the
requirements of Chapter 14 of the 13MP Manual. There appears to be very little area on the
development for the swale that is located oil the north side of [leis driveway (you may nerd to
consider the use ofa curb outlet device).
As requested in our previous letter, please label the proposed one-Foot contours for the proposed
storrnwater wetlands and please insure that these contours match the cross-sections provide (for
example, 3:1 side slopes shown on both views). Failure to provide this information in your next
submittal will result in a return of application.
22? Green St, Gtr 714
rnyptWv Ilp No th f. aroll na V11 1
rhn!r= 910-4 V.:'" 1 FAX 41-}4$807071 ri s!o"r Senlio9 1-877-621.6740
t1nC j C i
IntErret WWW.RCN7tt%aIItW.orp Noi-tharotlna
?.? to ?a :r?pS3C[u'111: 4?3•r^.?4€HF ?C?Cl Employ(!] A1,71i1,6711Y
Bob Stafitrrd
Page 2 of 2
August 23, 2011
3. Please provide details of the outlet structures for the proposed wetlands as well as details for anti-
seep protection in the outlet barrels. The details provided do not show enough information about
orifice sizes, materials to be used, dimensions of structures, etc.
The water quality volume far Wetland d appears to be miscalculated. In addition. it appears that
the wetland will drake down the one-inch storm in less than one day. Please check these
calculations and the outlet siring.
Please respond in writing within 30 calendar days of the date of this letter by sending a copy of ibis
information to Ms. Annette Lucas of the DWQ Central Office - Wetlands, Buffers and Stormwater
C ..ompliance and Permitting Unit at 1650 Mail Service Center. Raleigh, NC 27609-1650, Ifyou will not
be able to provide the requested information within that timcframe, please provide written conlirrrtation
that you intend to provide the requested information, and include a specific timetabie delineating when
the requested materials will be provided. If we do not hear from you in 30 calendar days, we will assume
that you no longer want to pursue this project and we will consider the project as returned.
This letter only addresses the application review and doe's not authorize any impacts to wetlands. waters or
protected buffers. Please be aware ilia( any impacts requested within your application are not authorized (at
this time) by the DWQ_ Please call Mr. Chad Turlington at 910-933-3320 or Ms. Annette Lucas at 919-
807-63$1 if you have any questions regarding, or would like tea set up a meeting to discuss this matter.
Sincerely,
Belinda S. Denson
Regional Supers isor
Surface Water Protection SL ctWfl
cc: Annette Lucas-DWQ
Crystal Amschler-C:SACF
File Copy
Hal Owen-Hal Gwen and Associates, Inc.
SCVC-SPAULDING& NC
7 4%k
SLIbic C
Sheer N")
Jok No.
Date

?aC t
Roadside Swale #l
Worksheet for Trapezoidal Channel
Project Description
Project File c;lhaestadlacademiclfmwlriverwoo.frn2
Worksheet Roadway Swale
Flow Element Trapezoidal Channel
Method Manning's Formula
Solve For Channel Depth
Input Data
Mannings Coefficient 0.030
Channel Slope 0.010000 ftlft
Left Side Slope 3.000000 H : V
Right Side Slope 3.000000 H V
Bottom Width 1.00 ft
Discharge 1,00 Os
Results
Depth 021 ft -
Flow Area 0.59 -fi
Wetted Perimeter 2.94 ft
Top Width 2.84 ft
Critical Depth 4.24 ft
Critical Slope 0.024594 ft/ft
Velocity 1.70 Ells. _
Velocity Head 0.04 ft
Specific Energy 0.35 ft
Froude Number 0.66
Flow is subcritical.
'. f o ? F:

69/22111 Academic Edition FCowMaster v5.17
61:25 00 PM Haestad Methods. Inc. 37 Brookside Road Waterbury, CT 06708 [phone] Page 1 of 1
Sc9c
N
___S AUL IN NO IS,
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
Submitted by:
Spaulding & Norris, PA
972 Trinity Road
Raleigh, North Carolina 27607
[phone]
DATE: December 4, 2007
Revised July 12, 2011
Revised September 21, 2011
PROJECT NO.: 643-07
6 9R? ? a
A44' AP
S[Alw_
10375
'? 11
?s
t
919 i? 772 Trinity Road • Raleigh, North Carolina _2760-/
a Certified Woman-Owned Business
TABLE OF CONTENTS
SECTION PAGE
Narrative 1
Methodology I
Supporting Calculations 2-8
NCDENR Stormwater Requirements Print 9
USGS Map
10
Harnett County Soils Map 11-14
FEMA Floodplain Map 15
Stormwater Management Permit Application 16-19
BMP Supplements
20-38
High Density Commercial Subdivision Deed Restrictions 39
& Protective Covenants
Stormwater Wetland Inspection & Maintenance Agreement 40-43
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 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 186,553 SF. This is approximately 56.7% 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.
II. Calculation Methodology
All stormwater BMP devices provided with this stormwater management plan submittal
were designed according to State guidelines as listed in the current 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

i
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NC DE R tormwater• Requirements Print
Print Page - SIC Areas Subject to Phase It Post-Construction & Other Stormwater Progra
NC Areas Subject to Phase YI Post-Construction & Other Stormwater Program Requirements

T.
;:'.i

Page 1 of 1

Contact CENR_ Recjicn FeYettevi4iF County HARNETT
Water Supply
Permitn,g Loral Eases WS-N Protectet Area
I Type
Wateshed
Notes . SausFes Phase ii Requiremems
http:i/204.211.239.202lstormwaterlprint_aspx"CMD=INIT&XMIN--78.87480666766012... 1113 0/2007
1 SGS Map
9a W
Name: LILLINGTON 035" ?` ---0': N 078° 48'77 40'' `,rd
Date: 111301200
{ Seale: 1 inch equals 1000 feel
Copyright (U) 1986, n aptecn, inU
Harnett Count Soils Map
"TerraServer Image Coutlesy cif the [_GS

.

USCS -n o L

Page f of i

n, L zoom ?t 200yd
'Liz itterraserver-microsk)tt,co `Pnnilma e.aspx`"F=I&S-=? 1 f Z =17&X= J'747& 1`-9804._. (I 13??/-??07
http
Som Map--Harnett County. No=±h Carolina
(Ullington Comrnercia )
Natural Resources Aieb Sv+l Survey ^ 0 11"30;2007
Conservation Servi National Cooperative SOO Survey Page 1 of 3
N h9e^ter€
F ti:F
x
Soil Map-Harnett County, North Carolira
(Lillington Commercial)
MAP LEGEND
Area of Interest (AOI)
Area of Interest (AOI)
Sails
Soil Map Units
Special Point Features
Blowout
® Borrow Pi;
Clay Spot
r Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
do Marsh
Mine or Quarry
Cl Miscellaneous Water
n Perennial Water
Rock Outcrop
+ Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Y1 Sadie Spot
Spoil Area
Stony Spot
Very Stony Spot
yr Wet Spot
s Other
Special Line Features
Gully
Short Steep Slope
Other
Political Features
Municipalities
Cities
Urban Areas
Water Features
Oceans
Streams and Canals
Transportation
+++ Rails
Roads
Interstate Highways
US Routes
State Highways
Local Roads
Other Roads
MAP INFORMATION
Original soil survey map sheets were prepared at publication scale
Viewing scale and printing scale, however, may vary from the
original. Please rely on the bar scale on each map sheet for proper
map measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL: littp..//websoilsurvey.nres.usda.gov
Coordinate System: UTM Zone 17N
This product is generated from the USDA-N RCS certified data as of
the version date(s) listed below.
Soil Survey Area: Harnett County, North Carolina
Survey Area Data: Version 7, Nov 2, 2007
Date(s) aerial images were photographed: 3!29/1998
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor shifting
of map unit boundaries may be evident.
Natural Resources Web Soil Survey 2.0 11130/2007
'ANN Conservation Service National Cooperative Soil Survey Pape 2 of 3
Soil Map-Harnett County, North Carolina
Lillington Commercial
Map Unit Legend
Harnett County, North Carolina (NCO85)
Map Unit Symbol Map Unit Name ( Acres in AO[ Percent of A01

Co
Coxvilie loam
2.9 o'
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
percent slopes
Ly Lynchburg sandy loam 4.1 6.40.6
MaB Marlboro sandy loam, 2 to 6 5.9 107%
percent slopes
11
6%
Na Nahunta loam 7.4 .
NoA Norfolk loamy sand, 0 to 2 06 0.9°%
percent slopes
-
NOB - Norfolk loamy sand. 2 to 6 0,0 0.1%
percent slopes
d 10
5 4%
16
Re Rains san
y loam . .
W Water 0.8 1-3%

VVaB Wagram loamy sand, 0 to 6 27.0 42.2%
percent slopes
Totals for Area of Interest (AOI) 641 1000%
Natural Resources Web Soil Survey 2.0 1 .
_" Conservation Service National Cooperative Soil Survey Page 3 of 3
I'VINIA Floodplain Nlap
Map Output
Page 1 of 1
N.C. Hoodplain Mapping Mfocmation Systen
Ow-Line Mapping Rppli-titre Pm ida d by the
Nwth Carolina Fioodplain Mapping P-q-
DIS5 calmer Ihis is nit a legacy bw4ng (FIFO!) Flom
Insurance Rate "p ard ,hould not be use-' as ,uct.
http- // 149.168.101.8/servlet/com.esri.esrimap.Esri map? Sere) ceName=locator&ClientVersi... 12/5/2007
Stormwater Management Permit Application
Dk.%Q USE ONLY
Date, Recei% d _ Fee Paid ( Permit Number
- - - --------- - - -----------
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This 1orill mray he ph('toaopicrt fi)l- Ilse its an origiml
1. GENERAL INFORMATION
Applicants name (specify the name of the corporation, individual, etc. who owns the project):
STAFFORD LAND COMPANY INC
2. Print Owner/Signi ng Official's name and title (person legally responsible for facility and compliance):
ROBFK'I STAFFORD
3. Mailing Address for person listed in itern 2 above:
246 VALLEY FIELD LANE
City:SOUTHF.RN PINES State:NC Gip:28387
Phone: (919 ) 577-6870 Fax: [phone]
Email:s tafford Fandco@em bargmail.conr
4. Project Name (subdivision, facility, or esta bli.shment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreernents, etc.):
LILLING'I ON COMMERCIAL
5. Location of Project (street address):
NW OF THE INTERSECTION OF-PINE STATE STREET AND US 401
City:LILL.INGTON Countv:HARNETT
6. Directions to project (from nearest major intersection)
NW 01`111E INTERSECTION OF PINE STATE STREET AND US 401. SEE VICINITY MAP LOCATED
ON THE COVER SI IEET OF TI IE PLAN SET.
7. Latitude:35.43
Longitude:-78.81 of project
8. Contact person who can answer questions about the project:
Narne:Thomas Spahr PE Telephone Nurnber: (919 854-7990
Ernail:tonA41sk)aUldingnorrris corn
II. PERMIT INFORMATION:
1. Specify vdiether project is (check one): ZNew ?RenewaI ?Modification
Form SWU-101 Version 5.07 Pa-e 1 of4
? If this application is being submitted as the resuIf of a renewal or modification to an existing permit, list the
existing permit number?tl /? -- - and its issue date (if known) N/A
__-
Specify the tYpe of project (check one):
?Low Dcnsitv E]High Density []Redevelop LC;eneral Permit ]Universal SMfI ?Other
4. Additional Pr o ject Require iiients (check applicable blanks):
?CAMA Major QSedimentation' 1:rosion Control 0404,1 40-1 Permit ?NI'DES 14orn-twater
Information on required state. Ere=runts can be obtained bw• Q onta_ting the Customer Service Center at
1-877-o-23-6 748.
III. PROJECT IIiIFORNIA-I'IOt`v
1. In the space provided belt,". su1111narize h0W storrniVater Will be treated. Also attach a detailed narrative
(one to two pages) describing stornvvvater management for the project.
AI' ULIT_VIA C11. BUILD«L 1, STOIZMWAThI? FOR I IHS 1'IZt ??I;CI tAIILL BE TRI;_LATED VVITI I FOUR
PROPO(-IFD STORMV1 A i_I_R WETLANDS. SLF NAIF_R/-%'I'IVI,' INCLUDED IN TI IF CAI -CULATIONS
2. Stor mvvater runoff from this project drains to the CAPE FFAR - River basin.
3. 'otaI Site Area: 7.8 --acres I. Total VVetlands Area: 0.44 acres
n. IOU Wide Strip of tVetland Area: N /A acres [llca Gthfrtfa?hlc if HO zu(tlalx.ts exist on site)
{?. Dotal Project Area 755 -?- acres 7. Project Built Upon Area:56.7
8. How manv drainage areas does the project have '1
9. Complete the following information for each drainage area- If there are more than ttivo drainage areas in the
project, attach an additional sheet with the information for each area piovided in the same format as below
Basin Information j Drainage Area 1 Drainage:Aeea 2
Receiving Stream Name C API. I-I-AR IM ER
Stream Class e- Inde\ No.
Drainage Area (sf) ',236 254
I Xlsting Impervious' Area (St) 1,002,786
Proposed Impervious" Area (sf) 186,;i33
°<? Impc rviotis' Area (total) ",9.5
'o

II11p' tit-ViO US* SU fa(e Area DraintmI Area I Drainage Area 2 ?
Cail-Sltt` BUildiMIS (Sf)
i
On-site Streets (sf) 2U,807? -
On-site Parking, (st) 114,33
On-site;idew'alks (st)
Other on-site (sf)
- -
Off-site (sf) 1,192,786
-
?
Total (StY 1,279 X39 l
lnlpcl "ioll" arca is di'tillcil ily the built apolr area mclu'ling, blot not limitcd fay, hialldiltgs, wu4s, parking areas,
tittlcZDt7ln5, _7!"et"iii (I3'Cll?;, CtC.
x:r (Ot'd hrt"lCC1 ara Si1111 be calculalcd ba< t,d on fbi` cm-rent poilZ'tt rf'Qar ing inL111,4on o UTthilltls ill tit' 1)uilt llp(m ilrcn
j?t't'cCt1t??7,4rc' c'rlli ttlrtfi?rlt.
Form SA41 10 1 Version 8.0' Paze ? of 4
I 0. How was the off-site impervious area listed above derived?OFFSITF IMPERVIOUS SURFACE WAS
APPROXIMATED BY BRINGING AN AERIAL PHOTO IN'10 TI It- Db4'G 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 sate of any lot. If lot sizes vary significanfly, 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 I-Iigh Density Residential Subdivisions
Form DRPC-4 Low Density Commercial Subdivisions
Form DRPC-5 Low Density Residential Subdivisions
Form DRPC-6 1 ,ow 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 perinit supplement form(s) listed belotiv must be submitted for each
BMP specified for this project. Contact the Stornhwater and General Permits Unit at [phone] for the status
and availability of these forms.
Dorm S"'401-Low Density.
Form SW401-Curb Outlet System
Form S1h'401-Off-Site System
Form SW401-Wet Detention Basin
Fornh 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 Svstern Supplement
Off-Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretenhon Cell Supplement
Level Spreader/ Filter Strip/ Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed. Sv,?ale Supplement
Sand Filter Supplement
Fornh SWi_;-101 Version 8.07 Page 3 of 4
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 DQ Office. (Appropriate office may be found by locating project on
the interactive online map at l?ti _;!};2a.en;_ iF tc nc_us!sn/msi lmlp'4.liwl)
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 k
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• 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
- 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 firm):
Mailing Address: ?.
City: State:
Phone: ( Fax:
Email:
VIII, APPLICANT'S CERTIFICATION
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
NCAC 2H.1000.,
Signature:
Date:___
Form SWU-101 Version 8.07 Page 4 of 4
BMP Supplements
Permit Number
(to be provided by DWQ)
??Jp Vv q . <.i,?,
? r
G ?
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.
L_P-ROJECT INFORMATION
Project name Lillington Commercial
Contact name P. Dan Pabst, PE
Phone number 919.854.7990
Date December 4, 2007
Drainage area number 1
111. DESIGN INFORMATION
Site Characteristics
Drainage area 69,260 ft`
Impervious area 54,886 ft`
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 (1' or N)
low?
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) 4,444 ft3 OK
Depth of temporary pool/ponding depth (D s) 9 in OK
Drawdown time 3.50 days OK
Diameter of orifice 1.25 in OK
Coefficient of discharge (Co) used in orifice diameter

calculation 0.60 (unitless)
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 6,924 ft2 OK
Shallow Land 2,739 f? OK
The shallow land percentage is' 40%
Shallow Water 2,777 ft2 OK
Form SW401 Modand-Rev. 1 Parts I and If. Project Design Summary, Page 1 or 3
Permit Number
(to be provided by DWQ)
The shallow water percentage is 40%
Deep Pool
Forebay portion of deep pool (pretreatmient) 716 ff2 OK
The forebay surface area percentage is: 10%
Non-forebay portion of deep pool 692 ft2 OK
The non-forebay deep pool surface area percentage is: 10%
Total of wetland zone areas 6,924 ftz OK
Add or subtract the following area from the zones 0.00 ft2
Topographic Zone Elevations
Temporary Pool
Shallow Land (top) 162.75 fmsl
Permanent Pool
Shallow Water (top) 162.00 fmsl
Deep Pool (top) 161.50 fmsl
Most shallow point of deep pools bottom 159.50 fmsl
Deepest point of deep pool's bottom 159.50 fmsl
Design must meet one of the following two options:
This design meets Option #1, N (Y or N)
Deep pool is 6inches 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 (flinch diameter) 210
Shrubs/small trees (1 gallon or larger) 140
Trees (1.5' dbh) 35
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (flinch diameter) 210 OK
Shrubstsmall trees (1 gallon or larger) 140 OK
Trees (1.5° dbh) 35 OK
Additional Information
Can the design volume be contained? Y (Y or N) OK
Does volume in excess of the design volume flow evenly
filter?
distributed through a vegetated
N
{Y or N}
? o Lu rr G- r s o t 5 ? ? ^ {''? ? 'o s N co
RoA-O StoG 4lTC."t
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 0
N

Y ft
(Y or N)

(Y or N)
vo L?u MG s s a+ SLI+!}zbc o s N c
?ioPc(>?lbE ?ITC?H
OK
application?
Is SMP sized to handle all runoff from ultimate build-out? Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts I and 11. Project Design Summary, Page 2 of 3
Permit Numt e;
(to be provOed by DWQ)
is the BMP located in a recorded drainage easement with
recorded access easement to a public Right of Way (ROW) ? Y (Y or Pt, OF:
The length to width ratio is 3A :1 0K
Approximate wetland length ^ 154 G ft
Approximate wetland width 45 0 ft
This approx. surface area is within this number of square
APPrtzimate surface area using length and width provided 5,93 it" feet of the entire wetland surface area reported above
Will the wetland be stabilized within 1/ days of construction? Y (Y or N) OK
Form SVJ461-UNetland-Rear I Parts 1 and 11 . Project Design Summary, Page 3 Q'3
Permit No.
(to be provided by D WQ)
lll. RI?Qt11RE?} ITEI111S CFtECKLIST
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 ° 31 0 1. Plans (1 ` - 50' or larger) of the entire site showing:
G - s-, 1 - Design at ultimate build-out,
G - 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,
C--9. I 2. Plan details (1 ° = 50' or larger) for the wetland showing:
LT ?, 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-9, 1 3. Section view of the weHand (1" = 20' or larger) showing:
G- y 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.
C__9 • 1 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
L_ 9, Z drainage area is stabilized.
6. The supporting calculations (including drawdown calculations).
i E0 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 prooded by DWQ)
? S N c-u! oeo 8 A copy of IN-, deed resf,ict?ot°
SW401-Wetland-Rev I Part M, page 2 o` 2
Permit Number
(b be provided by DWQ)
.Of wn.fEF.
f?
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.
Project name Lillington Commercial
Contact name P. Dan Pabst, PE
Phone number 919.854.7990
Date December 4, 2007
Drainage area number 2
Peak Flow Calculations
Does this project require prelpost control of the 1-yr 24-hr peak N (Y or N)
how?
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 poollponding depth (Dpj,,,,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 {unihess}
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 fie OK
Shallow Land 1,989 ft` OK
The shallow land percentage is: 36%
Shallow Water 2,273 ft2 OK
*orm SW401 Wetland-Rev.1 Parts I and ll. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
The shallow water percentage is
Deep Poo!
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 poors bottom
Deepest point of deep pail's bottom
Design must meet one of the following two options:
This design meets Option #1,
Deep pool is 6 -inches below SLWf, 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 (flinch 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)nch 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 r
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?
808 ft2 OK
14%
508 ft2 OK
9%
5,578 ft` OK
0.00 ft`
168.75 fmsl
168.00 frrmsl
167.50 fmsl
165.50 fmsl
165.50 fmsl
N (Y or N)
fmsi
Y
4 in
9 in OK
6 in OK
24 in OK
24 in OK
N (Y or N) OK
168
112
28
168 OK
112 OK
28 OK
Y (Y or N) OK
N (Y or N) V0LU/1E SS SGiihd?(cEO Sr c7
pv.kc>S1?G fltr?rt .
0 ft
N (Y or N) Von-ur,e $,- ©k"H^0-660 S:-T6
P?GhbStOt YJIT-Lti ,
Y (Y or N) OK
Y (Y or N) OK
Form SW401-Wetland-Rev.1 Parts ! and 11. Project Design summary. Page 2 of 3
Permit Number _
(to be printed by DINO)
is the BMP located in a recorded d;alnage ease,nent with a Y 'f or N) OK
recorded access eae-eement to a public Right of, Way (ROWV? _
The length to width rato is 5 0 1 OK
Approximate wetland length 164.0 ft
Approximate wetland wi& 33 6 fl
This approx surface area is within this number of square
Approximate surface area us Cog length and width provides 5,412 1 feet of the entire wetland surface area reported above
Will the wet:and be stabilized within 14 days of construction? Y (Y or N) OK
Form SW401-Wetian +d-?c. ev 1 Parts I and !L Project sign Summary, Page 3 a4 3
Permit No.
(to be provided by DWQ)
fill. 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- 3 U 1. Plans (1` 50' or larger) of the entire site showing:
G -,5-, I - Design at ultimate build-out,
-- S Z
c 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- 2. Plan details (1' = 50' or larger) for the wetland showing:
K-14'2 - 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.
-DC L^`? 1 3. Section view of the wetland (1' = 20' or larger) showing:
G ?I,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.
": 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
G - 4 - Z drainage area is stabilized.
0
D_ G-"?_L C- 6. The supporting calculations (including drawdown calculations).
gcl <<
7. A copy of the signed and notarized inspection and maintenance agreement.
SW401-Wetland-Rev.1 Part III, page 1 of 2
>ern<<C Na. _
to he provided b y ,'Ji,VQ
8. A CC?DY of tt`":i' deed tee(P°i0o(?.
1f
SW4:'-\Aletlanc-Rer 1 Part 11l, page 1 of
Permit Number
(to be provided by UWQ)
This form must be frfled out_ Pri, kted and submitted.
The Required Items Checklist (Par,' ill) muss oe pritited. flleo out and subnnitted along with all the required information.
,I. PROJECT INFORMATION _
Proje.t name Riverwood Commons
Contact name Thomas Spaulding PE
Phone number 919.854.7990
Date July 7. 2011
Drainage area number
Il. DESIGN INFORMATION
Site Characteristics
Drainage area 64.033 ft'
Impervious area 53.578 ft'
Percent impervious 83.7% "b
Design rainfall depth 1.0 inch
Peak Flow Calculations
Does this project require prefpost control of the 1-yr 24-hr peak

flow? N (Y or N)
1-yr. 24-hr runoff depth in
1-yr, 24-hr intensity nihr
Pre-development 1-yr 24-hr runoff ft`isec
Post-development 1-yr, 24-hr runoff _ fit'%sec
Pre'Post 1 yr, 24-hr peak control ft '/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 4.269 ft'
Depth of temporary pool!pondine depth 0,,. 12 in
Drawdown time 2 00 days
Diameter of orifice .11.25 in
Coefficient of discharge (C,,) used in orifice diameter
calculation 0.60 (unitless)
Driving head (Hr) used in the orifice diameter, calculation 0,330 ft
Storage Volume: SR Waters Parameters
OK.
OK
OK
CK
Provide calcu',aTions to support this driving head
1-yr, 24-hr depth in
Pre-development 1-yr 24-hr runoff ffs
Post-development 1-yr. 24-hr runoff ft'
Minimum volurne required ft?
Volume provided {t'
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 5.198 ft- OK
Shallow Land 2.030 ft` OK
The shallow land percentage is 39°i
Shallow ?Nater _
2.132 It OK
The shallow water percentage is: 41%
,or, SW401-Wetland-Rev 1 Pars I and 11 Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
Deep Pool
Forebay portion of deep pool (pretreatment) 603 ft' OK
The forebay surface area percentage is 12%
Non-forebay portion of deep pool 433 ft` OK
The non-forebay deep pool surface area percentage is 8°/0
Total of wetland zone areas 5,19£ ft` OK
Add or subtract the following area from the zones 0.00 If
Topographic Zone Elevations
Temporary Pool
Shallow Land ("top) 163.00 fmsl
Permanent Pool
Shallow Water (top) 162.00 fmsl
Deep Pool (top) 161.50 fmsl
Most shallow point of deep pool's bottom 159.50 fmsl
Deepest point of deep pool's bottom 159.50 finsl
Design must meet one of the following two options.
This design meets Option #1,
N (Y or N)
Deep pool is 61nches below SLWT, If yes:
SLWT (Seasonally Low Water Table) fmsl
T his 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
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 (severa' 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 caluulatiuns 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 (ROVVP
The length to width ratio is.
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

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
5.4 .1 OK
Form SW401-Wetland-Rev 1 Parts I and II. Project Design Summary, Page 2 of 3
Perm;? Nurrter _
(to be U.ovrded by DWQ)
Approximate wetland lenrgin 173,0 ft
Ap„ roximate wet and math --- - - 32 0 ft
This approx. surface area is within this number of square
Approximate 5urf3Ge area using length anc width provided 5 536 t' feet of the entire wetland surface area repotted move
Will the wet 'nd tx : stamlized within; 14 days of wristructiorr.; Y tY or NJ OK
Form SI.V40 t 1.'deiand-Rev 7 Parts . and 11 Project Dt.5ign Surnrr.ary, rage 3 of e
Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST 77777
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 ?,- 3.0 1. Plans (1"- 50' or larger) of the entire site showing:
G- S". I - 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.
G--t,1 _ 2. Plan details (1" = 50' or larger) for the wetland showing:
G -'-t•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.
Oki? G?ti. I 3. Section view of the wetland (1° = 20' or larger) showing:
G y• 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.
L? 5. A construction sequence that shows how the wetland will be protected from sediment until the entire
G - y ,'Z- drainage area is stabilized.
_ LA, L C_ 6. The supporting calculations (including drawdown calculations).
a__f<
GA-? 7. A copy of the signed and notarized inspection and maintenance agreement.
&?t<'
SW401-Wetland-Rev.1 Part ill, page 1 of 2
Permit ND
!to be Frovcied by ? iNt;r'
_. __ c ter, 8. A copy of the deed restriction
SIA1401-wetland-Rev ? Part III, page Z of
Permit Number
(to be provided by DWQ)
A7?*"?
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.

0?, -NA F9
CG
h'9
> H
I. PROJECT INFORMATION
Project name Riverwood Commons
Contact name Thomas Spaulding, PE
Phone number 919.854.7990
Date September 21, 2011
Drainage area number 4
II. DESIGN INFORMATION
Site Characteristics
Drainage area 44,867 ft 2
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 It 3 /sec
Pre/Post 1-yr, 24-hr peak control ft3/sec
Storage Volume: Non-SR Waters
Design volume (temporary pool volume) 1,533 ft3 OK
Depth of temporary pool/ponding depth (Dpla,t) 9 in OK
Drawdown time 2.50 days OK
Diameter of orifice 0.75 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 ft 3
Post-development 1-yr, 24-hr runoff ft3
Minimum volume required ft3
Volume provided ft 3
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 1 of 3
Permit Number
(to be provided by DWQ)
Surface Areas of Wetland Zones
Surface Area of Entire Wetland 4,860 ft2 OK
Shallow Land 1,944 ft2 OK
The shallow land percentage is: 40%
Shallow Water 1,945 ft2 OK
The shallow water percentage is: 40%
Deep Pool
Forebay portion of deep pool (pretreatment) 583 ft2 OK
The forebay surface area percentage is: 12%
Non-forebay portion of deep pool 388 ft2 OK
The non-forebay deep pool surface area percentage is: 8%
Total of wetland zone areas 4,860 ft 2 OK
Add or subtract the following area from the zones 0.00 ft 2
Topographic Zone Elevations
Temporary Pool
Shallow Land (top) 167.75 fmsl
Permanent Pool
Shallow Water (top) 167.00 fmsl
Deep Pool (top) 166.50 fmsl
Most shallow point of deep pool's bottom 164.50 fmsl
Deepest point of deep pool's bottom 164.50 fmsl
Design must meet one of the following two options:
This design meets Option #1,
'
N (Y or N)
inches below SLWT, If yes:
Deep pool is 6
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 (4'inch diameter) 150
Shrubs/small trees (1 gallon or larger) 100
Trees (1.5" dbh) 25
Number of Plants in planting plan provided (several species of
each plant type are recommended):
Herbacious (4'inch diameter) 156 OK
Shrubs/small trees (1 gallon or larger) 104 OK
Trees (1.5" dbh) 26 OK
Form SW401-Wetland-Rev.1 Parts I and II. Project Design Summary, Page 2 of 3
Permit Number
(to be provided by DWQ)
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)
Excess volume must pass through filter.
distributed through a vegetated filter?
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) Show how flow is evenly distributed.
Are calculations for supporting the design volume provided in the Y (Y or N) OK
application?
Is BMP sized to handle all runoff from ultimate build-out? Y (Y or N) OK
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: 3.1 :1 OK
Approximate wetland length 125.0 ft
Approximate wetland width 40.0 ft

Approximate surface area using length and width provided z
5,000 ft 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 Page/ Plan
-- Sheet No.
. -` 1. Plans (1" - 50' or larger} of the entire site showing.
- : 1 Design at ultimate build-out,
.:` Off-site drainage (if applicable),
Delineated drainage basins (include Rational C coefflc ent 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.
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 !finer, 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.
t 2 5. A ccnstruction sequence that shows how the wetland will be protected from sediment until the entire
drainage area is stabilized.
6. The v supporting calculations (including drawdown Calculations).
7. A copy of the signed and notarized inspection and maintenance agreement.
.. k<1T}} 8. A copy of the deed restriction.
SW401-Wetland -Rev.1 Part 111, page 1 of 1
High Density Commercial Subdivision Deed Restiiction & 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.
1, CAD bEKl , acknowledge, affirm and agree by my signature below, that
I will cause the following deed restrictions and rovenants to be recorded prior to the sale of any lot
within the project known as LI LL.I N 6TO N C_n t?km SNC.i A? t._ _
1. The following covenants are intended to ensure ongoing compliance with State Stommwater
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
1 312,5 0 2. 33, hoc 22, 57,5'00 L '7'G4 4F
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 stormwa ter permit application to the Division of Water Quality and receive a permit
prior to construction.
Signature: 1? no 01 iv Date: IZ--o ti -O
I, ?'-C,,CC? ?,!? U-S , a Notary Public in the
c-0! 0 Ok County of
State of N(?v'?L CC-01'
do hereby certify that ?obe v+personally appeared
before me this the L--[i-?" day of he c-2 YY1 bt? , 20 D-] and acknowledge
the due exe ution of the foregoing instrument. Witness my hand and official seal,
FERG'
G - '? ?
SEA'
ZT,
O? A R S?
C)
Sign e
My Commission expires - ?
Form DRPC-1 Rev.1 Page 1 of I ?U B ??
F co\ .
Stour water 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 storrnwater 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 LO 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 l 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 a licaLion.
i Vegetation is too short or too Maintain vegetation at a height of
long. a roximatel 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 Problem:
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, phragnLtes or other
invasive plants cover 50% of
the deep pool and shallow
water areas.
Shallow land remains flooded
more than 5 days after a
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 1 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 BM.P.
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) -
consu_lt a professional.
Unclog the outlet device
immediately.
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.
BB?NV element
A Potential problem: How I wilt remediate the problem:
F
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 micpoot I 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
e 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, ripe it
on the plants rather than s ra '
The outlet device Clogging, has occurred. Clean out the outlet device. Dispose
of the sediment off-site.
The outlet device is dama ed Re air or re lace 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. 733-178(.
I acknowledge and agree by my signature below that 1 am responsible for the
performance of the maintenance procedures listed above. 1 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: rnt J ?j r-- a
Address: 2.4 Vh t_L_ `?_ E._t-..___---1? hN_?a? rrr-?na P?n??_? n1r_ Q?,R y
Phone:
Slgnatl
Date:__ 1 Z -®?t - a 7
Note: The legally responsible party should not be a homeowners association unless more than 5(}% of
the lots have been sold and a resident of the subdivision has been named the president.
I
r0a, C, 'Fe? V ? "'? , a Notary Public for the State of
Q t? ?VN CCGv? t County of t f? Ode, , do hereby certify that
personally appeared before me this 64+?-
day of C ?? and acknowiedge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal, //A --
z
y Cl B LAG
CCU tA
SEAL
My commission expires H - (Z' 17-
Off-site Drainage Area Nlap
Stormwater NN"etland Drainage Area Map