20052134 Ver 2_More Info Received_20120628

DS- Q�34u2
N
W E - BURDETTE LAND CONSULTING INC
10212 Creedmoor Road Raleigh North Carolina 27615
S Telephone [phone] — Fax [phone]
June 28 2012
Ms Lauren Witherspoon
c/o Wetlands, Buffers, Stormwater Compliance
and Permitting Unit
NC Division of Water Quality
512 N Salisbury Street
Raleigh North Carolina 27604
RE Diffuse Flow Pre Construction Application
Gates of Ethan's Glen Subdivision
Raleigh Wake County North Carolina
BLC Project # 50002
Dear Ms Witherspoon
We received your letter request dated May 14 2012 for additional information about the subject
project After consultation with Ms Annette Lucas of NCDWQ, Mr John Hams has revised the
diffuse flow plan for the project to utilize engineered filter strip design and corrected the
mislabeling of a topographic contour The riparian buffer impacts previously requested have
been avoided by utilizing the new level spreader design We request review and approval of the
revised diffuse flow plan A revised PCN including a revised Design Report and Calculations
Plans Supplement Forms for each level spreader and an Operation and Maintenance Agreement
are attached
i
JUN 2 8 �2012
�a d11rn

Ms Witherspoon
BLC Project # 50002
June 28 2012
Please do not hesitate to call Mr John Hams at [phone] if you have any questions about
the stormwater plans or documentation provided or me if you have any questions about the PCN
application
Sincerely
Burdette Land Consulting Inc
a- YV
Jennifer A Burdette
Environmental Specialist
Attachments
c John W Harris PE
Daniel T Sullivan — Contentnea Creek Development Co

oa Q�
1
Office Use Only
Corps action ID no
DWQ protect no
Form Version 1 3 Dec 10 2008
Pre - Construction Notification PCN Form
A Apphcant Information
1 Processing
1 a Type(s) of approval sought from the
Corps
0 FORMCHECKBOX ❑ Section 404 Permit ❑ Section 10 Permit
1b Specify Nationwide Permit (NWP) number or General Permit (GP) number
1c Has the NWP or GP number been verified by the Corps?
❑ Yes ❑ No
1d Type(s) of approval sought from the DWQ (check all that apply)
❑ 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
❑ 401 Water Quality Certification — Express ® Riparian Buffer Authorization
le Is this notification solely for the record
because written approval is not required?
For the record only for DWQ 401
Certification
❑ Yes ❑ No
For the record only for Corps Permit
❑ Yes ❑ No
1f Is payment into a mitigation bank or in lieu fee program proposed for mitigation
of impacts? If so attach the acceptance letter from mitigation bank or in lieu
fee program
❑ Yes ® No
1 g Is the protect located in any of NC s twenty coastal counties If yes answer 1 h
below
❑ Yes ® No
1h Is the protect located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ® No
2 Project Information
2a Name of protect
Gates of Ethan s Glen
2b County
Wake
2c Nearest municipality / town
Raleigh
2d Subdivision name
Gates of Ethan s Glen
2e NCDOT only T I P or state
protect no
3 Owner Information
3a Name(s) on Recorded Deed
Contentnea Creek Development Company
3b Deed Book and Page No
DB 11246 PG 2729
3c Responsible Party (for LLC if
applicable)
Darnel T Sullivan
3d Street address
8502 Six Forks Rd Ste 202
3e City state zip
Raleigh NC 27615 3264
3f Telephone no
[phone]
3g Fax no
[phone]
3h Email address
dan @standoutproperties com
Page 1 of 10
PCN Form — Version 1 3 December 10 2008 Version

4
Applicant Information (if different from owner)
4a
Applicant is
❑ Agent ❑ Other specify
4b
Name
4c
Business name
(if applicable)
4d
Street address
4e
City state zip
4f
Telephone no
4g
Fax no
4h
Email address
5
Agent/Consultant Information (if applicable)
5a
Name
Jennifer A Burdette
5b
Business name
(if applicable)
Burdette Land Consulting Inc
5c
Street address
10212 Creedmoor Road
5d
City state zip
Raleigh NC 27615
5e
Telephone no
[phone]
5f
Fax no
[phone]
5g
Email address
Iburdetteblc @bellsouth net
Page 2 of 10
PCN Form — Version 1 3 December 10 2008 Version

B Project Information and Prior Project History
1 Property Identification
1a Property identification no (tax PIN or parcel ID)
0891324376
lb Site coordinates (in decimal degrees)
Latitude 35 983503 Longitude 78 682261
(DD DDDDDD) ( DD DDDDDD)
1c Property size
114 acres
2 Surface Waters
2a Name of nearest body of water (stream river etc ) to
proposed project
UT to Upper Barton Creek
2b Water Quality Classification of nearest receiving water
WS IV NSW CA
2c River basin
Neuse
3 Project Description
3a Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application
The site is a residential subdivision consisting of mixed pine /hardwood forest All of the roads and approximately one half
of the proposed homes have been constructed Land use in the vicinity of the project consists of forest land and
residential subdivisions Please refer to the attached USGS Location Map (Figure 1) and Wake County Soil Survey Map
(Figure 2) for more information on the project setting
3b List the total estimated acreage of all existing wetlands on the property
3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property
4 500
3d Explain the purpose of the proposed project
The purpose of the proposed project is to construct three level spreaders that require construction of three bypass
channels through the riparian buffer
3e Describe the overall project in detail including the type of equipment to be used
The site is located on the south side of NC Hwy 98 between NC Hwy 50 and Peed Road (SR 1846) north of Raleigh
Wake County North Carolina The level spreaders proposed in this application are provided to replace diffuse flow
provisions that were proposed for the subdivision as part of the Section 404/401 permitting process prior to construction
Attached Plan Sheets 1 2A 2B and 3 through 6 provide a cover sheet site plan level spreaders buffer impact map plan
and profile drainage delineation and details for the proposed level spreaders
Heavy equipment typical for light construction will be utilized to construct the proposed level spreaders
4 Jurisdictional Determinations
4a Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
Comments Ms Jennifer Burdette conducted a surface water
® Yes ❑ No ❑ Unknown
and wetland delineation on the property in 2005 which was
subsequently approved by the USACE in their Nationwide
Permit approval
4b If the Corps made the jurisdictional determination what type
of determination was made?
❑Preliminary ® Final
4c If yes who delineated the jurisdictional areas?
Agency /Consultant Company Natural Systems
Name (if known) Jennifer A Burdette
Engineering
Other
4d If yes list the dates of the Corps jurisdictional determinations or State determinations and attach documentation
The determination above was issued on January 13 2006 and is included within the attached Nationwide Permit
Page 3 of 10
PCN Form — Version 1 3 December 10 2008 Version

5 Project History
5a Have permits or certifications been requested or obtained for
® Yes ❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b If yes explain in detail according to help file instructions
Mr Thomas Brown of the USACE issued Nationwide Permit 39 authorizing 84 linear feet of stream impact to construct a
road crossing for the project (AID #200620209) NCDWQ issued a 401 Water Quality Certification approval (DWQ
Project # 05 2134) for 82 linear feet of stream channel impact 5 675 square feet (SF) of Zone 1 riparian buffer and 2 636
SF of Zone 2 riparian buffer to construct the road crossing The level spreader proposed to diffuse flow from the project
in the original PCN application did not include bypass channels The locations proposed for these level spreaders have
been changed and their designs updated to current standards
6 Future Project Plans
6a Is this a phased project?
❑ Yes ® No
6b If yes explain
C Proposed Impacts Inventory
1 Impacts Summary
la Which sections were completed below for your project (check all that apply)
❑ Wetlands ❑ Streams tributaries ❑ Buffers
❑ Open Waters ❑ Pond Construction
2 Wetland Impacts
If there are wetland impacts proposed on the site then complete this question for each wetland area impacted
2a
2b
2c
2d
2e
2f
Wetland impact
Type of Jurisdiction
number —
Type of impact
Type of wetland
Forested
(Corps 404 10
Area of impact
Permanent (P) or
(if known)
DWQ — non -404 other)
(acres)
Temporary T
W1 ❑ P ❑ T
❑ Yes
❑ Corps
❑ No
❑ DWQ
2g Total wetland impacts
2h Comments
3 Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site then complete this
question for all stream sites impacted
3a
3b
3c
3d
3e
3f
3g
Stream impact
Type of impact
Stream name
Perennial
Type of Jurisdiction
Average
Impact
number
(PER) or
(Corps 404 10
stream
length
Permanent (P) or
intermittent
DWQ — non -404
width
(linear
Temporary (T)
(INT)?
other)
(feet)
feet)
S1 ❑ P ❑ T
❑ PER
❑ Corps
❑ INT
❑ DWQ
3h Total stream and tributary impacts
El
31 Comments
Page 4 of 10
PCN Form — Version 1 3 December 10 2008 Version

4 Open Water Impacts
If there are proposed impacts to lakes ponds estuaries tributaries sounds the Atlantic Ocean or any other open water of
the U S then individually list all open water impacts below
4a
4b
4c
4d
4e
Open water
Name of waterbody
impact number —
(if applicable)
Type of impact
Waterbody type
Area of impact (acres)
Permanent (P) or
Temporary T
01 ❑P ❑T
4f Total open water impacts
4g Comments
5 Pond or Lake Construction
If pond or lake construction proposed then complete the chart below
5a
5b
5c
5d
5e
Pond ID
Proposed use or purpose
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
number
of pond
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
5f Total
5g Comments
5h Is a dam high hazard permit required
❑ Yes ❑ No If yes permit ID no
51 Expected pond surface area (acres)
5j Size of pond watershed (acres)
5k Method of construction
6 Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer then complete the chart below If yes then individually list all buffer impacts
below If any impacts require mitigation then you MUST fill out Section D of this form
6a
❑ Neuse ❑ Tar Pamlico ❑ Other
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b
6c
6d
6e
6f
6g
Buffer impact
number —
Reason for
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
impact
Stream name
mitigation
(square feet)
(square feet)
Temporary T
required?
61 ❑P ❑T
El Yes
❑ No
B2 ❑P ❑T
El Yes
❑ No
B3 ❑P ❑T
❑Yes
❑ No
6h Total buffer impacts
61 Comments
D Impact Justification and Mitigation
1 Avoidance and Minimization
la Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
Re designing of the level spreaders as shown on the attached plans avoided the buffer impacts resulting from the previously
planned by pass channels
Page-') of 10
PCN Form — Version 1 3 December 10 2008 Version

lb Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
The bypass channels are situated adjacent to the road impact through the buffer to consolidate the buffer impact
2 Compensatory Mitigation for Impacts to Waters of the U S or Waters of the State
2a Does the project require Compensatory Mitigation for
impacts to Waters of the U S or Waters of the State?
❑ Yes ❑ No
2b If yes mitigation is required by (check all that apply)
❑ DWQ ❑ Corps
2c if yes which mitigation option will be used for this
projects
❑ Mitigation bank
❑Payment to in lieu fee program
❑ Permittee Responsible Mitigation
3 Complete if Using a Mitigation Bank
3a Name of Mitigation Bank
3b Credits Purchased (attach receipt and letter)
Type
Quantity
3c Comments
4 Complete if Making a Payment to In lieu Fee Program
4a Approval letter from in lieu fee program is attached
❑ Yes
4b Stream mitigation requested
linear feet
4c If using stream mitigation stream temperature
❑ warm ❑ cool ❑cold
4d Buffer mitigation requested (DWQ only)
square feet
4e Riparian wetland mitigation requested
acres
4f Non riparian wetland mitigation requested
acres
4g Coastal (tidal) wetland mitigation requested
acres
4h Comments
5 Complete if Using a Permittee Responsible Mitigation Plan
5a If using a permittee responsible mitigation plan provide a description of the proposed mitigation plan
Page 6 of 10
PCN Form — Version 1 3 December 10 2008 Version

6 Buffer Mitigation (State Regulated Riparian Buffer Rules) — required by DWQ
6a Will the project result in an impact within a protected riparian buffer that requires
❑ Yes ® No
buffer mitigation?
6b If yes then identify the square feet of impact to each zone of the riparian buffer that requires mitigation Calculate the
amount of mitigation required
6c
6d
6e
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
15
6f Total buffer mitigation required
6g If buffer mitigation is required discuss what type of mitigation is proposed (e g payment to private mitigation bank
permittee responsible riparian buffer restoration payment into an approved in lieu fee fund)
6h Comments The proposed bypass channels fall under the new drainage ditches roadside ditches and stormwater outfalls
provided that a stormwater management facility is installed to control nitrogen and attenuate flow before the conveyance
use that is allowable Buffer mitigation is not required for allowable uses
Page 7 of 10
PCN Form — Version 1 3 December 10 2008 Version

E
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1
Diffuse Flow Plan
1 a
Does the project include or is it adjacent to protected riparian buffers identified
® Yes ❑ No
within one of the NC Riparian Buffer Protection Rules'?
lb
If yes then is a diffuse flow plan included? If no explain why
Comments Attached Plan Sheets 1 through 6 provide a cover sheet drainage
delineation site plan pipes plan and profile level spreader section and details
® Yes ❑ No
Revised Operation and Maintenance Agreement and Design Report and
Calculations including the level spreader supplemental forms and checklists are
also attached
2
Stormwater Management Plan
2a
What is the overall percent imperviousness of this project?
%
2b
Does this project require a Stormwater Management Plans
❑ Yes ❑ No
2c
If this project DOES NOT require a Stormwater Management Plan explain why
2d
If this project DOES require a Stormwater Management Plan then provide a brief narrative description of the plan
❑ Certified Local Government
2e
Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
3
Certified Local Government Stormwater Review
3a
In which local government s jurisdiction is this project?
❑ Phase II
❑ NSW
3b
Which of the following locally implemented stormwater management programs
❑ USMP
apply (check all that apply)
❑ Water Supply Watershed
❑ Other
3c Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4
DWQ Stormwater Program Review
❑ Coastal counties
❑ HQW
4a
Which of the following state implemented stormwater management programs apply
❑ ORW
(check all that apply)
❑ Session Law 2006 246
❑ Other
4b Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5
DWQ 401 Unit Stormwater Review
5a
Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b
Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 8 of 10
PCN Form — Version 1 3 December 10 2008 Version

F
Supplementary Information
1
Environmental Documentation (DWQ Requirement)
la
Does the project involve an expenditure of public (federal /state /local) funds or the
El Yes
El No
use of public (federal /state) land?
1 b
If you answered yes to the above does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes
❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c
If you answered yes to the above has the document review been finalized by the
State Clearing House? (if so attach a copy of the NEPA or SEPA final approval
letter)
❑ Yes
❑ No
Comments
2
Violations (DWQ Requirement)
2a
Is the site in violation of DWQ Wetland Rules (15A NCAC 2H 0500) Isolated
Wetland Rules (15A NCAC 2H 1300) DWQ Surface Water or Wetland Standards
❑ Yes
® No
or Riparian Buffer Rules (15A NCAC 213 0200)?
2b
Is this an after the fact permit application?
❑ Yes
® No
2c
If you answered yes to one or both of the above questions provide an explanation of the violation(s)
3
Cumulative Impacts (DWQ Requirement)
3a
Will this project (based on past and reasonably anticipated future impacts) result in
❑ Yes
® No
additional development which could impact nearby downstream water quality?
3b
If you answered yes to the above submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy If you answered no provide a short narrative description
This PCN application is for level spreader design changes within an existing subdivision
4
Sewage Disposal (DWQ Requirement)
4a
Clearly detail the ultimate treatment methods and disposition (non discharge or discharge) of wastewater generated from
the proposed project or available capacity of the subject facility
Page 9 of 10
PCN Form — Version 1 3 December 10 2008 Version

5
Endangered Species and Designated Critical Habitat (Corps Requirement)
5a
Will this project occur in or near an area with federally protected species or
habitat?
❑ Yes ❑ No
5b
Have you checked with the USFWS concerning Endangered Species Act
impacts?
❑ Yes ❑ No
5c
If yes indicate the USFWS Field Office you have contacted
❑ Raleigh
❑ Asheville
5d
What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6
Essential Fish Habitat (Corps Requirement)
6a Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑ No
6b
What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7
Historic or Prehistoric Cultural Resources (Corps Requirement)
7a
Will this project occur in or near an area that the state federal or tribal
governments have designated as having historic or cultural preservation
status (e g National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
❑ Yes ❑ No
7b
What data sources did you use to determine whether your site would impact historic or archeological resources?
8
Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA - designated 100 year floodplain?
❑ Yes ❑ No
8b
If yes explain how project meets FEMA requirements
8c What source(s) did you use to make the floodplain determination?
Jennifer A Burdette
Applicant/Agent s Printed Name
6/28/12
Date
Appli t/ gent ignature
(Agents signature is valid only i onzation letter from the applicant
is provided
Page 10 of 10
PCN Form — Version 1 3 December 10 2008 Version

DESIGN REPORT AND CALCULATIONS
For
Modification of Level Spreader Design
Gates at Ethan's Glenn
Wake County
Date
01 December 2011
John W Harris, PE
CONSULTING ENGINEER, Inc
Corporate # C -3017
S 112 Bur Oak Circle
Raleigh, NC 27612
[phone]
www hamseng net

TABLE OF CONTENTS
PROJECT NARRATIVE
DRAINAGE DELINEATION & HYDROLOGY
PT FLUSH COMPUTATION
BY -PASS FLOWS
BMP SYSTEM HYDRAULICS
DITCH BLOCKS
CONVEYANCE PIPE SIZING
LEVEL SPREADER DESIGNS
SPREADER LENGTH
FOREBAY
ATTACHMENTS
RAINFALL DATA
RUNOFF COEFFICIENTS

PROJECT NARRATIVE
The development of the Gates at Ethan s Glenn subdivision required the crossing of an existing stream
which is designated as a' Jurisdictional ' Stream and at a location where Neuse Riparian Buffers (NRB) were
required Subsequently this crossing required that stormwater run off from the road ditches needed to be
dispersed or dissipated prior to entering the 50 foot NRB It is required that the I" flush or 1 24hr storm be
handled by dispersement so as to prevent the flow from being ` concentrated ' as it flows thru the NRB To
accomplish this task Level Spreaders were designed for all four corners of the road s crossing of the stream As
lots were sold and recorded, and the property developed it was found that insufficient easement space had been
allotted for the installation of the originally proposed level spreaders and they could not be installed
To correct this the site investigation found that it was possible to collect the I't flush flows and divert
them to a single source Level Spreader to be located at one of the (south west) remaining un sold corners This
Report represents the design analysis of how this new design is to be accomplished Basically the 1St flush from
the north east and north west quadrants will be diverted to a level spread of approximately 100 if on the south
west quadrant Flow from the south east quadrant will be handled in and at that location The normal flows from
the south west quadrant will be handled with a 2 "d Level Spreader of about 1001f
DRAINAGE DELINEATIONS and HYDROLOGY
Careful review and comparison of the existing conditions and the original design plans were conducted
to insure the actual stormwater flows are still as they were designed The design of the Level Spreaders will be
based upon the drainage delineations as shown on the design plans which accompany this report To design the
level spreaders we must know 2 flow volumes the I" flush or 1' 24hr storm and the 10 yr storm which is
required of NCDOT ditches The Ditches will be adapted with Ditch Blocks to capture the 1St flush but allow
the larger flows to bypass directly to the stream
It is important to note here that the method of computation for determining these flows will be the
Rational Method Wake County typically prefers that the SCS method be used but that method is more suited to
larger areas and does not give an accurate representation of flow for an existing development with very small
drainage basins
Basin Area Run -off Coef Storm Intensity 1" Vol 10yr -Vol
A 226
06
1
&
72
13cfs
98cfs
B 103
06
1
&
72
06cfs
44cfs
C 37
06
1
&
72
22cfs
161cfs
D 023
06
1
&
72
0 14cfs
10 cfs

SEE HYDROLOGY RUNOFF HYDROGRAPHS FOR AREAS A B C and D
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BMP SYSTEM HYDRAULICS
Ditch Blocks
In accordance with the NCDENR stormwater BMP manual the Level Spreader must be designed for the
first flush run off volume That first flush volume is defined as the 1 /hr storm intensity In addition we will
also analyze the 10 yr storm event to enable us to design the proper depths of the roadside ditches and ditch
blocks
Ditch Blocks are berms built in the ditch line at the height of the first flush flow When the first flush
occurs it is trapped by the ditch block and feed via a yard inlet and connecting outlet pipe to the proposed Level
Spreader Any flow deeper than the first flush is allowed to flow over the ditch block and into the stream as a
concentrated storm flow
Ditch Ditch Block Height
A
0 64 feet
B
0 48 feet
C
0 66 feet
D
Not Needed

S££ CAL REPORT FOR DITCHES A H C and D
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DESIGN CONVEYANCE PIPES
To convey the proposed I" flush stormwater to the appropriate level spreader location a yard inlet will
be placed to collect the water and transport it by gravity flow pipe This will be required in two locations one
for area A and one for area B" From our design software we have determined that a 10 PVC will be needed
for area `A and an 8 PVC pipe is needed for area B They will be bored under the existing roadway to
allow the stormwater water to reach the intended Level Spreader located in Phase IV
Pipes will need to be designed to carry storm water from the 1" flush volume from each of the 2 north
road areas to the south west quadrant Area A' will be a 10 PVC pipe and Area B' will need an 8 PVC
pipe The pipe hydraulics were computed and noted on the design plans and also as shown on the Culvert
Reports

SEE CULVERT REPORT FOR PIPES A and B
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LEVEL SPREADER DESIGNS
The Level Spreaders noted below were sized in accordance with the NCDENR BMP manual for Level
Spreader with Engineered Vegetated Filter Strip The Level spreader is to handle the 1 "/hr storm Intensity and
must be 10 If in length for every 1 cfs of flow volume
Device
cfs
Required
Length
22
100
LS -3
LS -1
19
10 /cfs
201f
LS 2
+/22
10 /cfs
201f (max length)*
LS 3
014
10 /cfs
10 if (min length)
*as this is an estimation of potential flow we have deternuned that with the depth of flow being 0 04'
( <1/2 ) and the velocity of 0 51 fps the device is acceptable and meets the intent of the maximum length rule
To verify the adequacy of the design lengths we have computed a broad crested weir analysis to
illustrate the effect of flow depth and flow velocities prevalent with these designs
Device Flow Length V -fps Depth of Flow
LS 1
19
100
LS -2
22
100
LS -3
014
10
051
004ft( +/ 1/2
053
004ft( +/ 1/2
046
0 03 ft 0/2
Please note that both the velocity and the depth of flow are extremely low and it is not expected that
these devices will be subject to erosion or nlls which would allow re concentration of overland flow

SEE WEIR REPORT FOR LEVEL SPREDERS 1 2 and 3
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FOREBAY
There will be 2 locations where a forebay is needed at Level Spreaders #1 and #2 Level Spreader #3
does not need a forebay because it is feed from a combination of ditch/channel and overland flow The size of
the forebays are relevant to the impervious area of the contributing drainage basin and are generally 0 2% of the
impervious drainage basin area
The sizes are tabulated as follows
Drainage Area
Percent Impervious
0 2% Required
Forebay
Size L
W
A & B 2 6 + 1 03 acs
15%
002 x 43560
44 SF
6ft
x 7 5ft
C 3 7 ac s
15%
002 x 43560
48 SF
7ft
x 7ft

ATTACHMENTS
RAINFALL DATA
RUNOFF COEFICIENTS
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Hx Uate /Time MAY- 11- 2007(FRI) 10 57 9197890744 P 002
05/11/2007 11 52 9197 j744 HARRIS ENS PAGE 02
JOHN W HARRIS, P E
Telephone [phone]
CONSWING ENGINEER Inc
7909 cdoee cow?
RALEIGH N C 27612
11 May 2007
Ms. Lynn Richardson
Chatham. County Planxim Department
PO B"54
Pittsboro N C 27312 -0054
RE Windfall Phase 4
Dean Nis. Richardson
The Developers of the Windfall Development wish to record the Phase 4 portion of lots. Since Om
Construction is not complete at this time the Developer will post a Bond for the raraainmg portion of work
required for comple4oin
'Me, total Contract Amount for Road Construction ofthe Phase 4 portion is $ 857 057 00 To date
the Road has been graded, erosion control devices have been placed and maiuMbied, Ditches and storm
pipes have been installed and the watex Iwo has hecn completed. As of today stone is being placed on the
road sub-grade- The remaining work involves the fwal placement of stone & Asphalt. The cost of that
mnaming work is deducted from the total cost, as follows
TOTAL, COST $ 857 05700
Stone $10594000
Aspbak $ 83,906 00
Total Complated $ 667 31100
'Me pamst complete is (667 311/857 057) = +! 78% The Band amount will need to be
40% more than the Completion cost, therefore the required Bond amo+mt rs
14 x( 105 840 00 + 83 906) = $ 265 645 00
I can provide copies of the contractor's cost estimates for the above noted, %cork to be completed
for your review if you need them As always should you have any questions or need additional mfvitoo;14oi36
manta mve me 2 rail

Site Improvement Performance Bond
Bond #B- 8896088
KNOW ALL MEN BY THESE PRESENTS That we Contentnea Creek Development
a subsidiary of Hillco Ltd as Principal and Cincinnati Insurance Company an Ohio
corporation authorized to do business in the State of North Carolina as Surety, are held
and firmly bound unto
Chatham County
12 East Street PO Box 1809
Pittsboro NC 27312
As Obligee, in the sum of TWO HUNDRED SIXTY -FIVE THOUSAND SIX
HUNDRED FORTY -FIVE & NO /100'S Dollars ($265,645 00) lawful money of the
United States of America for which payment well and truly to be made we bind
ourselves our heirs, executors administrators successors, and assigns Jointly and
severally firmly by these presents
Whereas Chatham County, pursuant to its subdivision ordinance as a condition of
approving the final plat for Phase 4 Windfall Creek Subdivision Chatham County
requires a financial guarantee for satisfactory completion of subdivision infrastructure
which Principal is contractually obligated to complete
Now therefore the conditions of this obligation is such that if the Principal shall carry
out all of the applicable terms and conditions imposed by Chatham County as conditions
of approval and as required by its subdivision regulations relating to the installation of
infrastructure and perform all the work as set forth therein, all within the time set forth in
said directive then this Bond shall be null and void otherwise to remain to full force and
effect
No party other than the Obligee shall have the rights hereunder as against the Surety
If the County Manager or Planning Director shall certify to the Surety that the required
improvements have not been accomplished in accordance with the conditions of approval
and the Chatham County Subdivision Regulations the Surety will pay to the Obligee the
requested amount The aggregate liability of the Surety on the Bond Obligation shall not
exceed the penal sum stated herein for any cause or reason whatsoever
Signed sealed and dated 15th day of May 2007
PRINCIPAL Contentnea Creek
Development a Subsidiary of Hillco Ltd
ATTEST BY
Robert O Hill Jr
(� SURETY Cincinnati Insuranc Co
ATTESIQ � y�J C�JI Y _
Edward M Warren Jr , Attorn41r act

THE CINCINNATI INSURANCE COMPANY
i Faulield, Ohio
POWER OF ATTORNEY
KNOW ALL MIEN BY THBSSPRBSENTS That THE CINCINNATI INSURANCE COMPANY a corporation organized under the laws
of the State of Ohio and having its principal office in the City of Fairfield, Ohio does hereby constitute and appoint
F M Beam, Jr , Edward X Warren, Jr and /or Paul Britton
of Kinston, North Carolina its true and lawful Attorney(s) in Fact to sign, execute, seal
and deliver on its behalf as Surety and as its act and deed, any and all bonds policies undertakings or other like instruments as follows
Any such obligations in the United States, up to
Ten Million and No /100 Dollars ($10,000,000 00)
Thn appointment is made under and by authority of the following resolution passed by the Board of Directors of smd Company
at a meeting held in the principal office of the Company a quorum being present and voting on the, 6th day of December 1955 which
resolution is still in effect
TMOLVED that the President or any Vice President be hereby authorized, and empowered to appoint Attorneys in
Fact of the Company to execute any and all bonds policies undertakings or other like instruments on behalf of the
Corporation, and may authorize any officer or any such Attorney in Fact to affix the corporate seal and may with or
without cause modify or revoke any such appointment or authority Any such wntmgs so executed by such Attorneys in
Fact shall be binding upon the Company as if they had been duly executed and acknowledged by the regularly elected
officers of the Company "
This Power of Attorney n signed and sealed by facsimile under and by the authority of the following Resolution adopted by the
Board of Directors of the Company at a meeting duly called and held on the 7th day of December 1973
RESOLVED that the signature of the President or a Vice President and the seal of the Company may be affixed by
facsimile on any power of attorney granted, and the signature of the Secretary or Assistant Secretary and the seal of the
Company may be affixed by facsimile to any certificate of any such power and any such power of certificate bearing
such facsimile signature and seal shall be valid and binding on the Company Any such power so executed and sealed
and certified by certificate so executed and sealed shall with respect to any bond or undertaking to which it is attached,
continue to be valid and binding on the Company
IN WnWESS VIHMBOF THE CINCINNATI INSURANCE COMPANY has caused these presents to be sealed with its
corporate seal duly attested by its Senor Vice President this 1st day of March 2002
eze%�2 TIC ATI INSURANCE COMPANY
STATE OF OIlIO ss
Semor Vice President
)
COUNTY OF BUTLER )
On this Ist day of March, 2002 before me came the above -named Senior Vice President of TIM CINCINNATI INSURANCE
COMPANY to me personally known to be the officer described herein, and acknowledged that the seal affixed to the preceding instrument
is the corporate seal -of said Company and the corporate seal and the signature of the officer were duly affixed and subscribed to said
instrument by the authority and direction of said corporation.
rIAL
i�y,ittrt ��+
t`- r ���` y; f MARK J LLER, Attorney at Law
04 1< NOTARY PUBLIC STATE OF OHIO
fP f„y +, o tiy" My commission has no expiration
r1 p lv 0 F date Section 147 03 o R Q
,rrlka. a 000%%
I the undersigned Secretary or Assistant Secretary of THE CINCINNATI INSURANCE COMPANY hereby certify that the
above is a true and correct copy of the Original power of Attorney issued by said Company and do hereby further certify that the said
Power of Attorney is still in full force and effect.
GIVEN under my hand and seal of said Company at Fairfield, Ohio
this woe* iaa 15th day of May, 2007
CORPORATE $
SEAL
Secretary
Ohio
BN 1005 (3/02)

4
�II
i
NCDENR
`
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER
VEGETATED FILTER STRIP (LS VFS) SUPPLEMENT
This form must be completely idled out printed initialed and submitted
I� PROJECT INFORMATION` � 1'��' 4 , "N �y ¢ t,
Project name
Gates at Ethan s Glenn
Contact name
Dan Sullivan
Phone number
919 961 3690
Date
June 26 2012
Drainage area number
LS-1 (areas A & B combined)
II'DESIGNtINFORMATIONT iA Vt, A
The purpose of the LS-VFS
Buffer Rule Diffuse Flow
Stormwater enters LS-VFS from
The drainage area
Type of VFS
Engineered filter strip (graded & sodded slope < 8 / )
Explanation of any Other responses above
no
If Stormwater Enters the LS VFS from the Drainage Area
Drainage area
143 312 flz
Impervious surface area
21 225 flz
Percent impervious
1481 /
Rational C coefficient
060
Peak flow from the 1 in/hr storm
197 cfs
Time of concentration
500 min
Rainfall intensity 10 yr storm
15 In/hr
Peak flow from the 10-yr storm
296 cfs
Design storm
1 inch /hour storm
Maximum amount of flow directed to the LS VFS
197 cfs
Is a flow bypass system going to be used?
yes (Y or N)
Explanation of any Other responses above
no
If Stormwater Enters the LS VFS from a BMP
Do not complete this section of the form
Type of BMP
Peak discharge from the BMP during the design storm
cfs
Peak discharge from the BMP during the 10 -year storm
cfs Do not complete this section of the form
Maximum capacity of a 100 -foot long LS-VFS
10 cfs
Peak flow directed to the LS VFS
cfs Do not complete this section of the form
Is a flow bypass system going to be used?
(Y or N)
Explanation of any Other responses above
LS VFS Design
Forebay surface area
44 sq ft Forebay s -idequately s zed
Depth of forebay at stormwater entry point
16 in
Depth of forebay at stormwater exit point
6 in Depth is appropr ate
Feet of level lip needed per cfs
10 fucfs
Computed minimum length of the level lip needed
20 ft
Length of level lip provided
20 ft
Form SW401 LS VFS 27Ju12011 Rev 9 page 1 of 3

i
Width of VFS
Elevation at downslope base of level lip
Elevation at the end of the VFS that is farthest from the LS
Slope (from level lip to the end of the VFS)
Are any draws present in the VFS?
Is there a collector swale at the end of the VFS?
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below)
M
B
W
y (flow depth for 10 year storm)
freeboard (during the 10 -year storm)
Peak velocity in the channel during the 10-yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any Other" responses above
30
ft
32114
fmsl
31964
fmsl
500
A
no
(Y or N) Le el spreader cannot be located pslope of a draw
no
(Y or N)
yes (Y or N)
no (Y or N)
200 ft
000 It
600 It
130 ft
100 It
265 ftlsec
Pick one
no (Y or N)
yes (Y or N)
The Spread Sheet would not allow input for the channel linning it is grassed
�l
t Ti 4
J% WGIUMD )TAMS CHECKLIST — __ dt J ,E i I
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found M 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
Requned Item
1 Plans (1 50 or larger) of the entire site shoving
Design at ultimate build out
Off site drainage (if applicable)
Delineated drainage basins (include Rational C coefficient per basin)
Forebay (d applicable)
High flow bypass system
Maintenance access
Proposed drainage easement and public right of way (ROW) and
Boundaries of drainage easement
Page or plan sheet number and any notes
Form SW401 LS VFS 27J02011 Rev 9 page 2 of 3

2 Plan details (1 30 or larger) for the level spreader showing
Forebay (if applicable)
High flow bypass system
One foot topo lines between the level lip and top of stream bank
Proposed drainage easement and
Design at ultimate build -out
3 Section view of the level spreader (1 20 or larger) showing
Underdrain system (d applicable)
Level lip
Upslope channel and
Downslope filter fabric
4 Plan details of the flow splitting device and supporting calculations (if applicable)
5 A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized
6 If a non engineered VFS is being used then provide a photograph of the VFS shoving
that no draws are present
7 The supporting calculations
8 A copy of the signed and notarized operation and maintenance (08M) agreement
Form SW401 LS VFS 27Ju12011 Rev 9 page 3 of 3

1
ATA
O
NCDENR
O
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER
VEGETATED FILTER STRIP (LS VFS) SUPPLEMENT
This form must
be completely filled out printed initialed and submitted
IfPROJECTPINFORMATIONM W ?;P W,," f � r ��"�` ►�a� � �a71922,M-211,71,0742]
Project name
Gates at Ethan s Glenn
Contact name
Dan Sullivan
Phone number
919-9613690
Date
June 26 2012
Drainage area number
LS-2 (area C)
11- �DESIGNiINFORMATION� � , � f s � �
The purpose of the LS VFS
Buffer Rule Diffuse Flow
Stormwater enters LS-VFS from
The drainage area
Type of VFS
Engineered filter strip (graded & sodded slope < 8 /)
Explanation of any Other responses above
no
If Stormwater Enters the LS VFS from the Drainage Area
Drainage area
161 000 fe
Impervious surface area
23 500 fe
Percent impervious
1460 /
Rational C coefficient
040
Peak flow from the 1 inthr storm
148 cfs
Time of concentration
500 min
Rainfall intensity 10 yr storm
105 in/hr
Peak flow from the 10-yr storm
155 cfs
Design storm
1 inchihour storm
Maximum amount of flow directed to the LS VFS
197 cfs
Is a flow bypass system going to be used?
yes (Y or N)
Explanation of any Other responses above
no
If Stormwater Enters the LS VFS from a BMP
Do not complete this section of the form
Type of BMP
Peak discharge from the BMP during the design storm
cis
Peak discharge from the BMP during the 10 -year storm
cfs Do not complete this section of the form
Maximum capacity of a 100 -foot long LS VFS
10 cfs
Peak flow directed to the LS-VFS
cfs Do not complete this section of the form
Is a flow bypass system going to be used?
(Y or N)
Explanation of any Other responses above
LS VFS Design
Forebay surface area 48 sq It Forebay is adequately si ed
Depth of forebay at stormwater entry point 16 in
Depth of Forebay at stormwater exit point 6 in Depth is appropriate
Feet of level lip needed per cfs 10 fticfs
Computed minimum length of the level lip needed 20 it
Length of level lip provided 20 It
Form SW401 LS VFS 27Ju12011 Rev 9 page 1 of 3

Width of VFS
Elevation at downslope base of level lip
Elevation at the end of the VFS that is farthest from the LS
Slope (from level lip to the end of the VFS)
Are any draws present in the VFS?
Is there a collector swale at the end of the VFS?
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below)
M
B
W
y (flow depth for 10 year storm)
freeboard (during the 10 -year storm)
Peak velocity in the channel during the 10 yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any Other" responses above
30
ft
32132
fmsl
31982
fmsl
500
A
no
(Y or N) Level spreader cannot be located upslope of a draw
no
(Y or N)
yes (Y or N)
no (Y or N)
200 ft
000 ft
600 ft
130 it
100 ft
265 ft/sec
Pick one
no (Y or N)
yes (Y or N)
The Spread Sheet would not allow input for the channel linning it is grassed
It
a
t Ti
111 RKUIRED ITEMS CKCKLJ$T
EDIT 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
Requned Item
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)
Forebay (d applicable)
High flow bypass system
Maintenance access
Proposed drainage easement and public right of way (ROW) and
Boundaries of drainage easement
n Page or plan sheet number and any notes
Form SW401 LS VFS 27Jul2011 Rev 9 page 2 of 3

2 Plan details (1 30 or larger) for the level spreader showing
Forebay (if applicable)
High flow bypass system
One foot topo lines between the level lip and top of stream bank
Proposed drainage easement and
Design at ultimate build -out
3 Section view of the level spreader (1 20 or larger) showing
Underdram system (d applicable)
Level lip
Upslope channel and
Downslope filter fabric
4 Plan details of the flow splitting device and supporting calculations (if applicable)
5 A construction sequence that shows how the level spreader will be protected from
sediment until the enbre drainage area is stabilized
6 If a non engineered VFS is being used then provide a photograph of the VFS showing
that no draws are present
7 The supporting calculations
8 A copy of the signed and notarized operation and maintenance (0 &M) agreement
Form SW401 LS VFS 27M2011 Rev 9 page 3 of 3

Form SW401 LS VFS 27M2011 Rev 9 page 1 of 3
0�0� WATe90G
..AT
NCDENR
°
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER VEGETATED FILTER STRIP (LS VFS) SUPPLEMENT
This form must be completely filled out printed initialed and submitted
IiLPRCUECT INFORMATIONS a U v) &1-7
Project name
Gates at Ethan s Glenn
Contact name
Dan Sullivan
Phone number
919 961 3690
Date
June 26 2012
Drainage area number
LS-3 (area D)
II --DESIGN INF01RI ATI0N
The purpose of the LS VFS
Buffer Rule Diffuse Flow
Stormwater enters LS-VFS from
The drainage area
Type of VFS
Protected riparian buffer (slope < 5 /)
Explanation of any Other responses above
no
If Stormwater Enters the LS VFS from the Drainage Area
Drainage area
10 020 ftz
Impervious surface area
1 500 ftz
Percent impervious
1497 /
Rational C coefficient
060
Peak flow from the 1 m /hr storm
014 cfs
Time of concenfrabon
500 min
Rainfall intensity 10-yr storm
72 mmr
Peak flow from the 10-yr storm
099 cfs
Design storm
1 inch/hour storm
Maximum amount of flow directed to the LS VFS
014 cfs
Is a flow bypass system going to be used?
yes (Y or N)
Explanation of any Other" responses above
no
If Stormwater Enters the LS VFS from a BMP
Do not complete this section of the form
Type of BMP
Peak discharge from the BMP during the design storm
cfs
Peak discharge from the BMP during the 10 -year storm
cfs Do not complete this section of the form
Maximum capacity of a 100 -foot long LS-VFS
2 cfs
Peak flow directed to the LS VFS
cfs Do not complete this section of the form
Is a flow bypass system going to be used?
(Y or N)
Explanation of any Other responses above
LS VFS Design
Forebay surface area
4 sq ft Forebay is adequately sized
Depth of forebay at stormwater entry point
0 in
Depth of forebay at stormwater exit point
6 in Depth is appropriate
Feet of level lip needed per cfs
50 ft/cfs
Computed minimum length of the level lip needed
7 It Ten feet is the minimum level spreader length
Length of level lip provided
20 ft
Form SW401 LS VFS 27M2011 Rev 9 page 1 of 3

I
Width of VFS
Elevation at downslope base of level lip
Elevation at the end of the VFS that is farthest from the LS
Slope (from level lip to the end of the VFS)
Are any draws present in the VFS?
Is there a collector swale at the end of the VFS?
Bypass System Design (if applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below)
M
B
W
y (flow depth far 10 -year storm)
freeboard (during the 10 -year storm)
Peak velocity in the channel during the 10-yr storm
Channel lining material
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Explanation of any Other" responses above
50
ft
32340
fmsl
32140
fmsl
400
/o
no
(Y or N)
no
(Y or N)
yes (Y or N)
no (Y or N)
200 ft
000 It
600 It
130 It
100 It
2 65 fUsec
Pick one
no (Y or N)
yes (Y or N)
Le el spreader cannot be located pslope of a draw
The Spread Sheet would not allow input for the channel linning it is grassed
R
+ R j
III REQUIRED ITEMS CHECKLIST
EDIT Please Indicate the page or plan sheet numbers where the supporting documentation can be found M 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
Requned Item
1 Plans (1 50 or larger) of the entire site showing
Design at ultimate build -out
Off site drainage (d applicable)
Delineated drainage basins (include Rational C coefficient per basin)
Forebay (d applicable)
High flow bypass system
Maintenance access
Proposed drainage easement and public right of way (ROW) and
Boundaries of drainage easement
,Initiqll Page or plan sheet number and any notes
k
i
Form SW401 LS VFS 27Jul2011 Rev 9 page 2 of 3

is
2 Plan details (1 30 or larger) for the level spreader showing
Forebay (if applicable)
High flow bypass system
One foot topo lines between the level lip and top of stream bank
Proposed drainage easement and
Design at ultimate build -out
3 Section view of the level spreader (1 20 or larger) showing
Underdram system (if applicable)
Level lip
Upslope channel and
Downslope filter fabric
4 Plan details of the flow splitting device and supporting calculations (if applicable)'Dt
5 A construction sequence that shows how the level spreader will be protected from
sediment until the entire drainage area is stabilized
6 If a non engineered VFS is being used then provide a photograph of the VFS showing
that no draws are present
7 The supporting calculations
8 A copy of the signed and notarized operation and maintenance (0 &M) agreement
Form SW401 LS VFS 27Ju12011 Rev 9 page 3 of 3

Permit Number
(to be provided by DWQ)
Drainage Area Number
Filter Strip, Restored Riparian Buffer and Level Spreader
Operation 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 filter strip is established any newly planted vegetation
will be watered twice weekly if needed until the plants become established
(commonly six weeks)
— Once a year the filter strip will be reseeded to maintain a dense growth of
vegetation
— Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the vegetation
— Two to three tunes a year grass filter strips will be mowed and the clippings
harvested to promote the growth of thick vegetation with optimum pollutant
removal efficiency Turf grass should not be cut shorter than 3 to 5 inches and
may be allowed to grow as tall as 12 inches depending on aesthetic requirements
(NIPC 1993) Forested filter strips do not require this type of maintenance
— Once a year the soil will be aerated if necessary
— Once a year soil pH will be tested and line will be added if necessary
After the filter strip is established it will be inspected quarterly and witlun 24 hours
after every storm event greater than 10 inch (or 15 inches if in a Coastal County)
Records of operation 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 filter strip
Trash /debris is present
Remove the trash / debris
system
The flow splitter device
(if applicable)
The flow splitter device is
clogged
Unclog the conveyance and dispose
of any sediment off site
The flow sputter device is
Make any necessary repairs or
damaged
replace if damage is too large for
repair
Form SWU401 Level Spreader Filter Strip Restored Riparian Buffer O &M Rev 3 Page 1 of 3

Permit Number
(to be provided by DWQ)
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
Project name
BMP drainage area number
Print name Dan Sullivan
Title
.'s Glenn
Address 8223 Six Forks Road suite 201
Phone
Signati
&-. d-0 r LS- / -3
Date ! — .2 7 — i z_
Note The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president
I U,4-.:-L , a Notary Public for the State of
County of do hereby certify that
T" personally appeared before me this Z
day of s� �2 8 IoL and acknowledge the due execution of the
forgoing ilter strip, npanan buffer and/or level spreader maintenance requirements
Witness my hand and official seal A Lt CZ P C C A Rk
.`````%,% aP
4
d
PUBLIC a
CO
s►iim`����
SEAL
My commission expires -� -5-- a ° /s
Form SWU401 Level Spreader Filter Strip Restored Riparian Buffer O &M Rev 3 Page 3 of 3

BMP element
Potential problem
How I will reme&ate the problem
The swale and the level
The swale is clogged with
Remove the sediment and dispose
lip
sediment
of it off site
The level lip is cracked
Repair or replace lip
settled undercut eroded or
otherwise damaged
There is erosion around the
Regrade the soil to create a berm
end of the level spreader that
that is higher than the level lip and
shows stormwater has
then plant a ground cover and
bypassed it
water until it is established Provide
line and a one -time fertilizer
application
Trees or shrubs have begun
Remove them
to grow on the swale or lust
downslo a of the level lip
The bypass channel
Areas of bare soil and /or
Regrade the soil if necessary to
erosive gullies have formed
remove the gully and then
reestablish proper erosion control
Turf reinforcement is
Study the site to see if a larger
damaged or rnpap is rolling
bypass channel is needed (enlarge if
downhill
necessary) After this reestablish
the erosion control material
The filter strip
Grass is too short or too long
Maintain grass at a height of
if applicable)
approximately three to six inches
Areas of bare soil and /or
Regrade the soil if necessary to
erosive gullies have formed
remove the gully and then plant a
ground cover and water until it is
established Provide lime and a
one -tune fertilizer application
Sediment is building up on
Remove the sediment and
the filter strip
restabilize the soil with vegetation if
necessary Provide line and a one-
time fertilizer application
Plants are desiccated
Provide additional irrigation and
fertilizer as needed
Plants are dead diseased or
Determine the source of the
dying
problem soils hydrology disease
etc Remedy the problem and
replace plants Provide a one time
fertilizer application
Nuisance vegetation is
Remove vegetation by hand if
choking out desirable species
possible If pesticide is used do not
allow it to get into the receiving
water
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality local Regional Office or the
outlet
401 Oversight Unit at 919 733 1786
Form SWU401 Level Spreader Filter Strip Restored Riparian Buffer O&M Rev 3 Page 2 of 3

s es �' •
4-4
o u 00
v N
rn
O o
n } ,
3
.h
Z!
GRAPHIC SCALE
i0 0 125 250 500 1000
( IN FEET )
1 inch = 250 ft.
h

� � e'eeeeelelit���
\ '/ • ��.>
I
4f 10,
All
IN
IN
``. --- EXISTING; 'SEDIMENT BASIN
'
I X
IN
IN i RESHAPE AND
\\\ FORM NCDOT
\ \ ROAD DITCH /` J
`at - IN AFTER REMOVAL j''
\.OF SEDIMENT � -�
` BASIN /!
EXISTING NEUSE
j' 7
' _ - STORMWATER RIPARIAN A
N BUFFER
� \ �
^.EASEMENT
\
� ` `,``� `\ __�38'' - -- - - EXISTING SEDIMENT.. ? _
c4 ` - - - -- BASIN TO BE REMOVED / •
\ - - - - -- - _ r` ;' ROPOSED YARD INLET F--i
\\ -s` j`' - - - - -- r jJ \,, TOP HEADWALL RIM EL. =328'
C \ °HITCH BLOCK (FUTURE) ``,
� , ., - ^. ,' ., 322.95. INVERT EL.= 323.36
#B /` 1 , INV IN = 315.77 N
—_-----PROPOSED YARD INLET '\ 1 • � N u '-' t
RIM EL.= + /- 328'(MUST BE REGRADED) ``, XISTING W °'�" dam-
\ ^'' - -- 1 STORMWATER \ c�s� c i • ,"'+ U N t�
NN\ `- - - - - -- - - - - - - -; INVERT EL =326' ``, n,�lO EASEMENT ° \ ° �"
o _ I `
03 � U
--o j / r i ! i' F \ I I \ a X11 `, l ' r J \ U CrS
1`7 - l r _ \\ i i / '' �/ / i t } `� i ! - / a t1 i \ `I t1 `v \ '`a I` O.7 ° rl
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a` `a
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'� ! r I I ITCH LOCK _ \ ` \ - _
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- 18.E RCP
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it It IN
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- 1' - t ( j i j / i e it i !
C \ \\ ! ,' ! ( 1 I ; �_1-- CL f '_ C� GL CL t -- L j j /
C� — _ L ,
LIGHT POLE
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- KG V t i I 5 1 ' i ; �\\_
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1 \ 1
/ /�-
- - - - -- --- - - - - -- - - - - -- - - ° - -- °
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c CL CL IN - - -- - - - - -- _ - - - -- - -_ -_ - - -- COMM, BOX , \ a `\ ��` -_ - _ - - - - -- ` \\ C
f- - - _ - - --
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�� \\ _ _ _ % -jam'' IAA % t i '' ' Cy - i -' ' - '�' _ °--- i ,I ,\ \ ;
r' ! .- \ <' < / ' 1 i 'l' - -- ---- 5-- -- -, , \ 1
IN t
It- A.EVE
Vv /' ! /INV 321 _ C iiIAFI'— - yam' -10� - i i ' ~' 1 ; 1 /r i ; r \\ I C� f r --------------- i'' , lr ^` ' a
404
r - _ Q� - - - -- / LIGHT POLE
FOR BAY 1 � ` ' i It �' PHONE PED /
CABLE TV - --- - - - - -- --------- - - - - -- - - - - - -- - - - - -- — - -- 1 J 1 if
i f / r' i
Is
/ -
-
/' INV = 321 ___, _ _ - - - - - -- - -PHONE PED i i / j' b
- -- - - - - - -- ' / i i - - ___ _ I t v,
32 r t ; r ) ; - _ t XISTI G -+ `n
!! 11 1 r I--1
`,EXISTING 60 RCP i
8 58 LF © 2.86 i STORMWATER oo N N
\20 EASEMENT
=1 1 J ; / t j S I w N
-
�," IF-911 "''1 I { , 1 t I l e S 1 1 � „ � N
_= ; ► ' ,' \�� t t I
I hI 111I 1 III- 11,f -1 r ! t ' t ! DITCH '
LEVEL i i t f 1 =1! II I{ ICI I 1 r , €al t o
,' SPREADER -2 1 =1I =I I KEA I I- �'f , t � � r J t �32� N BLOCK I �, 27 °� �
/ I I i — {Ii_ "! I ! i i/ 1 J i it O °
LEVEL 11-11 �O TOP HEADWALL = 321.50 � � � o '°_� � �
/ t � ,' j I I I I
/ SPREADER -1 h ! ; ; t INV OUT = 314.17
50 r r , ,
i % . '`,l \\ \`, _ _ 30' VEGETATIVE
` `, 30' VEGETATIVE FILTER STRIP
FIL. ER STRIP
_`ll— - -- — - Ott t
_ NEUSE
Ut
,(1-- 1"�_ RIPARf BUFFER
IN
�/ i ? ► t` `', , WATERSHED BUFFER
j _ _
ej, ;' ! �lll ilk' t r ! A
t � , j r�� Ali! \ \ - � I ; t ; �^ •
' EXISTING SEDIMENT B SIN
FOREBAY
TO BE REMOVED WHE `` - ' • r-'I
; j ; % ,APPROPRIATE
! _
! \ J
/ \�
it
/
1 1 {! \
It vJ
Ji
,
It, / / - -- /
W T!%RSHED BUF R
• �--�
i
\� Ab
410 MW
1 4f
/
4f 03
\ \ GRAPHIC SCALE
t
\
/ 20 0 10 20 40 80
IN FEET)
c`inc`h = 20 ft.
x
Vol, 41

N11 I t ,
o� \ RESHAPE =ND
FORM NCCOT ;'
N\I II II
\ \
`♦I ROAD DITCH
`'`. \ AFTER REi�rOVAL
` ` \ \.OF SEDIMENT
\
` ``
BASIN
`, \
\�
IN 1, �. —
--
cCIN
-
c
IN
°
'
IN
Al C4
r
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CC
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56 %
Uv i
Q 'Q
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_IGI-IT POLE
-EXISTING
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EASEMENT f
EXISTING SEDIMENT �/'
BASIN TO BE REMOVED / f
NIN
1 ;
"\- -OITCH BLOCK (FUTURE) / �♦
ROPOSED YARD INLET
° RIM EL.= + /- 328'(MUST BE REGRADED)
---- --- -- - --- -, INVERT EL. =326'
e �
_ PI
r \
-- f l ``♦ 1 \ \\ i
O L '
IN \
IN
�y
♦
CC
IN
U k
Gv ; ' CL
f '
f - JCL
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V , /
i FOR BAY
' -
v CABLE TV ; / - ------ - - - - -- - - - --
v----------- - - - - -- ---- - - - - -- --------
// t INV = 321 - - --
- - - - --
8» RC
01 1
1=I I I ! I I - if
e `
1 t - It , ♦ , IN
)IN IN \11
, 't \'\
\
Lr--VEL
%7SEAAR m2
' LLBt L
SPREADER -1 5 0' t f
,
f ' f
t 30' VEGETATIVE 30' VEGETATIVE
I -( _ FILTER STRIP
FILTER STRIP --
Ill- _ - - i , r
` _ �.1� ¢J' 4_1
' ,,
f x=111— '+ l� -
NEUSE
f l=l�j - '�f RIPARIAN BUFFER
Ilf � fl —f11— __ - - -
r f
�-11� =1J1 '" t /
—0+50
33
32,
1 +00 1 +17
0
32
—0 +50
3G�0
28
26
27
26
325
2k.
23
22
21
3210
0 +00 0 +50 1 +00 1 +17
PIPE—/.
l
NEUSE
RIPARIAN BUFFER
1
ROPOSED YARD INLET
TOP HEADWALL = RIM EL. =328'
322.95 INVERT EL.= 323.36'
� INV IN = 315.77
/-EXISTING
STORMWATER
ry0 EASEMENT -
, r -
r r
r � -
I
;� ` ITCH LOCK \ :, `- _,�
\, / -----------
'� to —
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COMM. BOX `,, ��, `, '` \ '\ ;♦ \. �� ` - - - - -- ------ - - - - -- - - - ---� _ - --
t j fill, l i
' t ,
.,PHONE PED i
! ``,EXISTING 60 RCP -EXISTING
�4
1 STORMWATER
� 58 LF @ 2.86 - � 's 1 �
20
1 i EASEMENT
DITCH 1
0 Nc3t BLOCK �o
r
TOP HEADWALL = 321.50 oc
INV OUT = 314.17
WATERSHED BUFFER
HORIZONTAL
1 In = 3' VERTICAL
—0-120
33
3Z
32,
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-- ---- ----- - - - - --
DITCH BLOCK
EXISTING
GRADE
EXISTING
ROAD
23. 9.5
23.2
2 _�_ � _
_.
PROPOSED GRADE
2` % i -- — _. -- — - ._ _ 32
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GRAPHIC SCALE
25-
23.7
2
I 3
3
1
26-
L-
3
Station 0 +03.00 2
29 4
Etev - 326.000
I.
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BOTTOM OF
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2 _
____ _
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26
27
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325
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22
21
3210
0 +00 0 +50 1 +00 1 +17
PIPE—/.
l
NEUSE
RIPARIAN BUFFER
1
ROPOSED YARD INLET
TOP HEADWALL = RIM EL. =328'
322.95 INVERT EL.= 323.36'
� INV IN = 315.77
/-EXISTING
STORMWATER
ry0 EASEMENT -
, r -
r r
r � -
I
;� ` ITCH LOCK \ :, `- _,�
\, / -----------
'� to —
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t j fill, l i
' t ,
.,PHONE PED i
! ``,EXISTING 60 RCP -EXISTING
�4
1 STORMWATER
� 58 LF @ 2.86 - � 's 1 �
20
1 i EASEMENT
DITCH 1
0 Nc3t BLOCK �o
r
TOP HEADWALL = 321.50 oc
INV OUT = 314.17
WATERSHED BUFFER
HORIZONTAL
1 In = 3' VERTICAL
—0-120
33
3Z
32,
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PROPOSED
YARD INLET
-- ---- ----- - - - - --
DITCH BLOCK
EXISTING
GRADE
EXISTING
ROAD
23. 9.5
23.2
2 _�_ � _
_.
PROPOSED GRADE
2` % i -- — _. -- — - ._ _ 32
f
2 _ __ _ �_ -- —E -- - 32
=oN - -O+ 1.50 j _ . _ _ - -. _ _ _.. _
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NEUSE
RIPARIAN BUFFER
1
ROPOSED YARD INLET
TOP HEADWALL = RIM EL. =328'
322.95 INVERT EL.= 323.36'
� INV IN = 315.77
/-EXISTING
STORMWATER
ry0 EASEMENT -
, r -
r r
r � -
I
;� ` ITCH LOCK \ :, `- _,�
\, / -----------
'� to —
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t j fill, l i
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.,PHONE PED i
! ``,EXISTING 60 RCP -EXISTING
�4
1 STORMWATER
� 58 LF @ 2.86 - � 's 1 �
20
1 i EASEMENT
DITCH 1
0 Nc3t BLOCK �o
r
TOP HEADWALL = 321.50 oc
INV OUT = 314.17
WATERSHED BUFFER
HORIZONTAL
1 In = 3' VERTICAL
—0-120
33
3Z
32,
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EXISTING
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23. 9.5
23.2
2 _�_ � _
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PROPOSED GRADE
2` % i -- — _. -- — - ._ _ 32
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� 58 LF @ 2.86 - � 's 1 �
20
1 i EASEMENT
DITCH 1
0 Nc3t BLOCK �o
r
TOP HEADWALL = 321.50 oc
INV OUT = 314.17
WATERSHED BUFFER
HORIZONTAL
1 In = 3' VERTICAL
—0-120
33
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EXISTING
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EXISTING
ROAD
23. 9.5
23.2
2 _�_ � _
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PROPOSED GRADE
2` % i -- — _. -- — - ._ _ 32
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12'
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F- !� 6°
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1-321.14 1-321.32
2-320.14 2-320.32
3 — VARIABLE 3 — VARIABLE
331
32
EOP
ROW
ROAD
CENTERLINE
z- - -- __-.._ _...�.. - - - - -- - - --
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1 EXISTING 1
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STONE AGGREGATE
PER DETAIL
24- . - -- _-- .___..__ -: - -.___ ._ -____. — --- --..__ _ _ -__.. -_-- - _ __._ . -_ __ _._T- _ _ _.__ .. _ .___. 32
C7 GRASSLINED SWALE 6,
h 2:1 SLOPE PROPOSED GRADE
5:1 SLOPE
12'
ivo
8"
F- !� 6°
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32
0 +00
1
32
b
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330 = w N
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0 +50 0 +77 ' I
( IN FEET )
1 inch = 10 ft.
TARIABLE
32
0 +00
1
32
b
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330 = w N
k --�
0 +50 0 +77 ' I
( IN FEET )
1 inch = 10 ft.
TARIABLE
0 +50 0 +77 ' I
( IN FEET )
1 inch = 10 ft.
TARIABLE

DETAIL "B"
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IF NEEDED �� ������
U�����U`� '�N����
PIPE FROM
DIVERSION
INFLUENT
STORMWATER
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TO LEVEL
SPREADER
—EARTH BERM
R/W DITCH BLOCK
DITCH
EARTH SHOULDER—""'
PLAN VIEW PIPE OUTLET
TOP OF
DITC,�, BANK
EA BERM
DITCH
INVERT
SECTION A-A
|
HARDENED MIX OF
ORTAR MIX
TYPICAL DITCH BLOCK DETAIL
DETAIL
VEGETATED
DIVERSION
NOTE:
'LEVEL SPREADERS SHALL BE CONTAINED
WITHIN A 20` MAINTENANCE AND DRAINAGE
EASEEK4ENT AND SHALL CONFORM TO
TOPOGRAPHY TO MEET THE INTENT OF
O|FUSE FLOW."
LEVEL� ���l[}[-��� '[�
L[-V [-L_ `�F- F\[-��L/[-[\
SECTION DETAIL
3�" STONE AGGREGATE,-
CUT INTO SLOPE W/
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GRASS LINED
SWALE
GEO TEXTILE FABRIC
/8C250\
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C-4 cd
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