20041488 Ver 8_401 Application_20130521

Transmittal
STEWART- PROCTOR PLLC
ENGINEERING & SURVEYING
319 CHAPANOKE ROAD
SUITE 106
RALEIGH, NC 27603
PHONE. [phone]
FAX [phone]
Date:
Attention:
From:
No. of pages:
(Including this cover)
Comment(s):
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Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.3 Dec 10 2008
Pre - Construction Notification C Fornk
A. AppUcant Information
1. Processing
1 a. Type(s) of approval sought from the
Corps:
N Section 404 Permit ❑ Section 10 Permit ..-
..
-._.: .....r ,
1 b. Specify Nationwide Permit (NWP) number. 29 or General Permit (GP) number.
1c. Has the NWP or GP number been verified by the Corps?
® Yes
❑ No
Id. 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
1 e. 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 in4leu
fee program.
❑ Yes
® No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
❑ Yes
® No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
® No
2. Project Information
2a. Name of project:
Winston Pointe Mixed Development
2b. County:
Johnston p
2c. Nearest municipality / town:
Clayton
2d. Subdivision name:
Winston Pointe
2e. NCDOT only, T.I.P. or state
project no: �`
3. Owner Information
3a. Name(s) on Recorded Deed: Central Carolina Reality, Inc. & ASCO Builders, Inc.
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3b. Deed Book and Page No.
DB 2280 PG 22 & DB 2752 PG 766
3c. Responsible Party (for LLC if
applicable):
Algie Stephens
3d. Street address:
319 Chapanoke Rd, Ste 102
3e. City, state, zip:
Raleigh, NC 27603
3f. Telephone no.:
(919) 779 -8649
3g. Fax no.:
NA
3h. Email address:
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:
6.
Agent/Consultant Information (if applicable)
5a.
Name:
Michael L. Stewart
5b.
Business name
(if applicable):
Stewart & Proctor Surveying and Engineering
Y� 9 9 9
5c.
Street address:
319 Chapanoke Rd, Ste 106
5d.
City, state, zip:
Raleigh, NC 27603
5e. Telephone no.:
(919) 779 -1855
5f.
Fax no.:
NA
5g.
Email address:
stewartpe @aol.com
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):
164800 -57 -5149 8164801 -49 -8881
1b.
Site coordinates (in decimal degrees):
Latitude: 35.646222 Longitude: - 78.512895
(DD.DDDDDD) (- DD.DDDDDD)
1c.
Property size:
420 acres
2.
Surface Waters
2a.
Name of nearest body of water (stream, river, etc.) to
White Oak
proposed project:
2b.
Water Quality Classification of nearest receiving water.
C; NSW
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 property is forested primarily with mixed pinethardwood and few pine stands. The general land use in the vicinity of
the project consists of residential subdivisions and forested areas. 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:
38
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property:
15,627
3d.
Explain the purpose of the proposed project:
The purpose of the project is to develop the property with the road, sanitary sewer and stomrwater infrastructure
necessary to provide building areas for medium - density, single family home construction and commercial development to
serve the current and future residents of the Clayton area.
3e.
Describe the overall project in detail, including the type of equipment to be used:
The project consists of a medium - density residential subdivision and commercial development including roads, sanitary
sewer and stormwater infrastructure to be constructed in phases. There are three road crossings included in the first
phase of the project that involve impacts to jurisdictional stream channels, jurisdictional and Isolated wetlands and
riparian buffers. Remaining phases do not involve impacts to jurisdictional stream channels or jurisdictional and Isolated
wetlands. See attached Phase and Drainage Maps with location of devices (Sheets 1 -2, 24 "x36") along with level
spreader information (Sheets 7 -8, 24 "x36 ") and 8.5 "x 11" insert sheets detailing each proposed impact (Sheets 8A -8C).
Heavy equipment typical for road construction, utility installation and grading will be used to construct the proposed
project such as track hoes, bulldozers, dump trucks and graders.
Page 3 of 10
PCN Form — Version 1.3 December 10, 2008 Version

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?
Yes ❑ No El Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
❑ Preliminary ❑ Final
of determination was made?
4c. If yes, who delineated the jurisdictional areas?
Agency /Consultant Company: Burdette Land Consulting,
Inc.
Name (if known): Jennifer Burdette
Other
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
Representatives of McKim and Creed delineated the wetlands along White Oak Creek and Ms. Jennifer Burdette of
Burdette Land Consulting, Inc. delineated streams and wetlands of the interior of the project site. Mr. Thomas Brown of
the USACE conducted a field verification of these boundaries on March 29, 2012. A stream determination for Channel A
was completed for the first phase of the project as documented in the attached NCDWQ letter (DWQ EXP #041488 v2)
dated October 19, 2006. Stream determinations for Channel B, C and D were completed as shown In the attached
NCDWQ letter (DWQ EXP 041488 v3) dated February 26, 2007. Stream determinations for Channel B and C were re-
evaluated as reported in the attached NCDWQ letter (DWQ #04 -1488 v7) dated May 16, 2012.
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.
Phase I of the project was constructed without impacts to jurisdictional or isolated wetlands and streams. The applicant
submitted a PCN application for a road required by NCDOT to provide a second entrance for Phase I of the project to
allow emergency vehicle access in 2004 and received a 401 Water Quality Certification (WQC) as documented In the
attached letter dated March 2, 2005 (#04- 1488). This road also serves as the main access road for the remaining phases
of the project. The road's original alignment crossed three stream channels as approved by NCDWQ; however the
corresponding Nationwide Permit request was denied by the USACE due to stream impacts In excess of 300 linear feet.
In 2008, a PCN application was submitted in which the road alignment was revised to avoid two of the originally proposed
stream crossings. However, neither a Nationwide Permit nor a 401 WQC were issued due to incomplete stormwater
information.
S. Future Project Plans
6a. Is this a phased project?
TO Yes ❑ No
6b. If yes, explain.
The project is phased, but Phase I Is the only phase that involves impacts to jurisdictional and Isolated wetlands and
streams.
Page 4 of 10
PCN Form — Version 1.3 December 10, 2008 Version

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. 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.
Welland 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
W1 ®P ❑ T
Road Crossing
Fill
Headwater forest
® Yes
❑ No
® Corps
❑ DWQ
0.015
Impact Area A
W2 ®P ❑ T
Road Crossing
Culvert/Riprap
Headwater forest
® Yes
❑ No
❑ Corps
® DWQ
0.008
Impact Area B
W3 ®P ❑ T
Road Crossing
Culvert/Riprap
Headwater forest
® Yes
❑ No
® Corps
❑ DWQ
0.013
Impact Area C
2g. Total wetland impacts
0.036
2h. Comments: The proposed jurisdictional and isolated wetlands impacts do not exceed the USACE's 0.10 acre or
NCDWQ's 1 acre thresholds for mitigation.
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
Road Crossing
Culvert/Riprap
UT to White Oak
® PER
® Corps
3
140
Impact Area A
Creek
❑ INT
❑ DWQ
3h. Total stream and tributary impacts
140
31. Comments: The proposed stream channel impact of 140 linear feet does not exceed the USACE's and NCDWQ's 150
linear foot threshold for mitigation.
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
01 ❑P ❑T
U. Total open water impacts
4g. Comments:
S. Pond or Lake Construction
If Pond or lake construction proposed, then complete the chart below.
Page 5 of 10
PCN Form — Version 1.3 December 10, 2008 Version

5a.
5b.
5c.
5d.
5e.
Wetland Impacts (acres)
Stream Impacts (feet)
Upland
Pond ID
Proposed use or purpose
(acres)
number
of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5E Total
5g. Comments:
5h. Is a dam high hazard permit required?
❑ Yes ❑ No If yes, permit ID no:
5i. 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.
ec.
6d.
8e.
6f.
eg.
Buffer impact
number —
Reason
Buffer
Zone 1 impact
Zone 2 impact
Permanent (P) or
for
Stream name
mitigation
(square feet )
(square feet)
Temporary
impact
uired?
Road
B1 ®P ❑ T
Cron ing
UT to White Oak Creek
® No
3,701
2,380
Area A
6h. Total buffer impacts
3,701
2,380
6i. Comments: Aligned to cross the stream and riparian buffer at a perpendicular angle and impacting less than one -third acre
of riparian buffer, the proposed road crossing is classified as an Allowable activity in the Neuse River Buffer Rules.
D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The developer obtained a delineation of surface waters and wetlands present on the property early in the planning stage of the
project to assist in avoiding Impacts to surface waters, wetlands and riparian buffers to the maximum extent practicable.
Impacts to two streams and their associated riparian buffer were avoided by re- aligning the Phase I roadway across the
property. The remaining phases of the project have been designed to avoid impacts to jurisdictional and isolated wetlands
and streams.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
To allow aquatic life passage, the proposed culvert at Impact Area A will buried one -foot. Culverts will also be installed within
the roadway fill to allow for connection of the wetland system and passage of normal water flow. See attached plans.
Page 6 of 10
PCN Form — Version 1.3 December 10, 2008 Version

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 project?
❑ 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:
6. Complete If Using a Permktee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
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
buffer mitigation?
❑ Yes ® No
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.
Zone
8c.
Reason for impact
6d.
Total impact
(square feet)
Multiplier
6e.
Required mitigation
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
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).
Page 7of10
PCN Form — Version 1.3 December 10, 2008 Version

6h. Comments:
E. Stomnerater 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?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
Comments:
®Yes ❑ No
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
24%
2b. Does this project require a Stormwater Management Plan?
® 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:
See attached Stormwater Management Plan Narrative.
2e. Who will be responsible for the review of the Stormwater Management Plan?
® Certified Local Government
❑ DWQ Stormwater Program
❑ DWQ 401 Unit
3. Certified Local Government Stormwater Review
3a. In which local govemmenYs jurisdiction is this project? Johnston County
❑ Phase II
3b. Which of the following locally- implemented storrnwater management programs
® NSW
apply (check all that apply):
❑ USMP
❑ 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
4a. Which of the following state - implemented stormwater management programs apply
[I [I
[I ORW
(check all that apply):
❑ Session Law 2006 -246
❑ Other.
4b. Has the approved Stormwater Management Plan with proof of approval been
attached?
❑ Yes ❑ No
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

Stewart - Proctor Surveying and Engineering
319 Chapanoke Road, Suite 106, Raleigh, North Carolina 27603
April 1, 2013
Ms. Renee Gledhill - Earley
NC State Historic Preservation Office
4617 Mail Service Center
Raleigh, North Carolina 27699 -4617
RE: SHPO Consultation Request
Winston Pointe Mixed Use Development
Clayton, Johnston County, North Carolina
Dear Ms. Gledhill- Earley:
The Winston Pointe Mixed Use Development is a proposed medium - density residential and
commercial development that would involve the entire 420 -acre property. It is located on the
north side of Winston Road approximately 4,600 feet east of Winston Road's intersection with
Cornwallis Road west of Clayton, Johnston County, North Carolina. The attached Figure 1
depicts the location of the property on US Geological Survey (USGS) Garner, NC 7.5- minute
quadrangle topographic map.
The project requires a Nationwide Permit for proposed impacts to surface waters and wetlands.
We request a review of the proposed project's location to determine whether it may have impacts
to historical or archeological sites. Thank you in advance for your assistance with this project.
Sincerely,
Stewart- Proctor Surveying and Engineering
Michael L. Stewart, PE
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10212 Creedmoor Road - Raleigh, North Carolina 27615 CHKV BY: JAB
Telephone [phone] —Fax (919) 94 1-"09 1 PROJECT M 9243 IIFIGUREM I

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Algie Stephens
319 Chepanoke Road
Raleigh, NC 27603
Subject Property:
Midied F. Earley, Ooveam
William O. Ross Jr., Secretary
NartA Carolina Dgwum d of Fmirmman and Natural Resources
October 19, 2006
Winston Pointe Phase I
Alan W. Klimek, P.B. Director
Division of Water Quality
DWQ EXPO 04 -148M
Johnston County
On -Site Determination for Applicability to the Neuse Riparian Area Protection Rules (15A NCAC 2B
.0233)-EXPRESS REVIEW PROGRAM
Dear Mr. Stephens:
On October 16, 2006, at the request of Mr. Neal Floyd and Gerren Lanier of True Line Soils, Lia Myott and Susan
Gale conducted an on -site determination to review one stream feature located on the subject property for
applicability to the Neuse Buffer Rules (15A NCAC 2B .0233). The feature is labeled as "A" on the attached
maps initialed by Lia Myott and Susan Gale on October 19, 2006. The Division of Water Quality (DWQ) has
determined that the feature labeled as "A" on the attached map is an ephemeral stream and k not subject to
the Neon Buffer Rules. However, the pond that Stream "A" drains into is subject. This on -site determination
L-11
s expire five (5) years from the date of thts letter.
Landowners or affected parties that dispute a determination made by the DWQ that a surface water exists and that
it is subject to the buffer rule may request a determination by the Director. A request for a determination by the
Director shall be referred to the Director in writing clo Cyndi Karoly, DWQ 401 Oversightftpress Review
Permitting Unit, 2321 Crabtree Blvd., Raleigh, NC 27604 -2260. You must act within 60 days of the date that you
receive this letter. Applicants are hereby notified that the 60-day statutory appeal time does not start until the
affected party (including downstream and adjacent landowners) is notified of this decision. This determination is
final and binding unless you ask for a hearing within 60 days.
This letter only addresses the applicability to the buffer rules and does not approve any activity within the buffers.
Nor does this letter approve any activity within Waters of the United States or Waters of the State. If you have
any questions, please contact Lia Myott at 919.733.9502.
Sincerely,
40 v ei
AWK/cbkRem im. w
AA1an W. Klimek, P.E.
Attachments: Johnston County Soil Survey Map, USGS Topographic Map
cc: Neal Floyd, True Line Soils, 205 W. Main St., Clayton, NC 27520
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Algie Stephens
319 Chepanoke Road
Raleigh, NC 27603
Subject Property:
Michael F. Easley, Governor
William G. Ron Jr.. Secretary
North Carolina Delmumnt of Environment and Natural Raoumes
February 26, 2007
Winston Pointe Phase I1
Alan W. Kliunk P.E. Director
Division of Water Quality
DWQ EXPO 04- 14880
Johnston County
On -Site Determination for Applicability to the Neese Riparian Area Protection Rules (15A NCAC 2B
.0233)-EXPRESS REVIEW PROGRAM
Dear Mr. Stephens:
On February 19, 2007, at the request of Mr. Neal Floyd, Lia Myott conducted an on -site determination to review
three stream features located on the subject property for applicability to the Neuse Buffer Rules (1 SA NCAC 2B
.0233). The features are labeled as "B", "C", and "D" on the attached maps initialed by Lia Myott on February
26, 2007. The Division of Water Quality (DWQ) has determined that the following:
Feature "B" is subject to the Neuse Buffer Rule at the flag labeled "B 1 ". Stream B in intermittent at Flag
"B 1" and perennial at Flag "B2 ".
Feature "C" is subject to the Neuse B:fer Rule at the flag labeled "C 1 ". Stream C in intermittent at Flag
"C1" and perennial at Flag "C2 ".
Feature "D" is subject to the Meuse Brier Rule at the flag labeled "D1 ". Stream Din intermittent at Flag
"D1" and perennial at Flag "D2 ".
This on -site determination shall expire five (5) years from the date of this letter.
Landowners or affected parties that dispute a determination made by the DWQ that a surface water exists and that
it is subject to the buffer rule may request a determination by the Director. A request for a determination by the
Director shall be referred to the Director in writing clo Cyndi Karoly, DWQ 401 Oversight/Express Review
Permitting Unit, 2321 Crabtree Blvd., Raleigh, NC 27604 -2260. You must act within 60 days of the date that you
receive this letter. Applicants are hereby notified that the 60-day statutory appeal time does not start until the
affected party (including downstream and adjacent landowners) is notified of this decision. This determination is
final and binding unless you ask for a hearing within 60 days.
This letter only addresses the applicability to the buffer rules and does not approve any activity within the buffers.
Nor does this letter approve any activity within Waters of the United States or Waters of the State. If you have
any questions, please contact Lia Myott at 919.733.9502.
Sincerely,
A
AWIVcbk/lem /171AIan W. Klimek, P.E.
Attachments: Johnston County Soil Survey Map, USGS Topographic Map
101 Oversight /Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1630
2321 Crabtree Boulevard, Suite 250, Raleigh. North Carolina 21604
Phone: 919 - 737.1786 / FAX [phone] / Internet:
An Equal 0awtunity /Ali3rnra a Action Employer — R% RaycWl0% Past Cam Papa
dVafCOy

cc: Neal Floyd, Tme Line Soils, 205 W. Main St., Clayton, NC 27520
File Copy
Central Files
Winston Pointe•
Page 2 of 2
Febmary 26, 2007

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A t �9 Michael F. Easley, Governor
Qt!i William G. Ross Jr.. Secretary
Nor& Cvo nre Dgwumt of Envi mmW and Natural Resources
Alen W.10imek. P.E. Diroctor
`► Division of Water Quality
tlr
March 2, 2005
DWQ Project # 041488
Johnston County
Mr. Algie Stephens
319 Chapanoake Road
Raleigh, NC, 27603
Subject Property: Winston Pointe
White Oak Creek, Class C NSW, 27 -43-11
Approval of 401 Water Quality Certification and Authorhation Certificate per the Neuse River
Buffer Protection Rules (15A NCAC 2B.0233) with Additional Conditions
Dear Mr. Stephens:
You have our approval, in accordance with the attached conditions and those listed below, to place fill
within or otherwise impact 0.31 acres of wetlands, 370 fat of perennial streams and 23,770 square feet
(ft) of protected riparian buffers for the purpose of constructM a residential subdivision at the subject
property, as described within your application received by the N.C. Division of water Quality (DWQ) on
August 25, 2004November 12, 2004, along with additional correspondence received February 21, 2005.
After reviewing your application, we have decided that the impacts are covered by General Water Quality
Certification Number(s) 3402 and 3404 (00402, GC3404). The Certification(s) allows you to use
Nationwide Permit(s) 39 and 14 when issued by the US Army Corps of Engineers (USACE). This letter
shall also act as your approved Authorization Certificate for impacts to the protected riparian buffers per
1SA NCAC 2B .0233. In addition, you should obtain or otherwise comply with any other required
federal, state or local permits before you go ahead with your project including (but not limited to) Erosion
and Sediment Control, and Non - discharge regulations. Also, this approval to proceed with your
proposed impacts or to conduct impacts to waters as depicted In your application shall expire upon
expiration of the 404 or CAMA Permit.
This approval is for the purpose and design that you described in your application. If you change your
project, you must notify us and you may be required to send us a new application. If the property is sold,
the new owner must be given a copy of this Certification and approval letter and is thereby responsible for
complying with all conditions. If total fills for this project (now or in the future) exceed one acre of
wetland or 1 SO linear feet of stream, compensatory mitigation may be required as described in 15A
NCAC 2H . 0506 (h). This approval requires you to follow the conditions listed in the attached
certification and any additional conditions listed below.
The Additional Conditions of the Certification are:
1. Impacts Approved
The following impacts are hereby approved as long as all of the other specific and general
conditions of this Certification (or isolated Wetland Permit) are met. No other impacts are
approved inchkUng incidental impacts:
nra
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Aie9 Sw*9 CVbr. RtleW NaM C= tt 27M9 -I=
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PMW 9%4ZI M / FAX 818 7X401 ndettmI

--4
Winston Pointe
Page 2 of 4
March 2,200S
2. Erosion & Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all specifications
governing the proper design, installation and operation and maintenance of such Best
Management Practices in order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed,
operated, and maintained in accordance with the most recent version of the Noah Carolina
Sediment and Erosion Control Planning and D aign Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control
measures must be such that they equal, or exceed, the requirements specified in the most
recent version of the North Carolina Sediment and Erasion Control Manual. The devices
shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects,
including contractor -owned or leased borrow pits:associated with .the project.
c. For borrow pit sites, the erosion and sediment cony l measures must be designed, installed,
operated, and maintained in accordance with the mAst recent version of the Noah Carolina
Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act.
3. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond
the footprint of the impacts depicted in the Pre -Construction Notification. All construction
activities, including the design, installation, operation, and maintenance of sediment and erosion
control Best Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
4. No Sediment & Erosion Control Measures w/n Wetlands or Waters
Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum
extent practicable. Nplacement of sediment and erosion control devices in wetlands and waters
is unavoidable, they shall be removed and the natural grade restored within six months of the date
that the Division of Land Resources has relespeed the project.
5. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable
Buffer Rules, and any subsequent modifications, the applicant is required to return the attached
certificate of completion to the 401/Wedands Unit, North Carolina Division of Water Quality,
1650 Mail Service Center, Raleigh, NC, 27699 -1650.
Amount Approved
(units)
Plan Location or Reference
Stream
370 feet
PCN form
404 /CAMA Wetlands
0.31 acres
PCN form
Buffers
123,770 (square ft.
PCN form
2. Erosion & Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all specifications
governing the proper design, installation and operation and maintenance of such Best
Management Practices in order to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed,
operated, and maintained in accordance with the most recent version of the Noah Carolina
Sediment and Erosion Control Planning and D aign Manual.
b. The design, installation, operation, and maintenance of the sediment and erosion control
measures must be such that they equal, or exceed, the requirements specified in the most
recent version of the North Carolina Sediment and Erasion Control Manual. The devices
shall be maintained on all construction sites, borrow sites, and waste pile (spoil) projects,
including contractor -owned or leased borrow pits:associated with .the project.
c. For borrow pit sites, the erosion and sediment cony l measures must be designed, installed,
operated, and maintained in accordance with the mAst recent version of the Noah Carolina
Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in
accordance with the requirements of the Sedimentation Pollution Control Act.
3. No Waste, Spoil, Solids, or Fill of Any Kind
No waste, spoil, solids, or fill of any kind shall occur in wetlands, waters, or riparian areas beyond
the footprint of the impacts depicted in the Pre -Construction Notification. All construction
activities, including the design, installation, operation, and maintenance of sediment and erosion
control Best Management Practices, shall be performed so that no violations of state water quality
standards, statutes, or rules occur.
4. No Sediment & Erosion Control Measures w/n Wetlands or Waters
Sediment and erosion control measures shall not be placed in wetlands or waters to the maximum
extent practicable. Nplacement of sediment and erosion control devices in wetlands and waters
is unavoidable, they shall be removed and the natural grade restored within six months of the date
that the Division of Land Resources has relespeed the project.
5. Certificate of Completion
Upon completion of all work approved within the 401 Water Quality Certification or applicable
Buffer Rules, and any subsequent modifications, the applicant is required to return the attached
certificate of completion to the 401/Wedands Unit, North Carolina Division of Water Quality,
1650 Mail Service Center, Raleigh, NC, 27699 -1650.

"-A
Winston Pointe
Page 3 of 4
March 2, 2005
6. Deed Notifications
Deed notifications or similar mechanisms shall be placed on all retained jurisdictional wetlands,
waters and protective buffers in order to assure compliance for future wetland, water and buffer
impact. These mechanism shall be put in place prior to impacting any wetlands, waters and/or
buffers approved for impact under this Certification Approval and Authorization Certificate: A
sample deed notification can be downloaded from the 401/Wedands Unit web site at
http: //h2o.eur.state.nc.ushicwedmWs. Ttar text of the sample deed notification may be modified
as appropriate to suit to this project.
7. Diffuse Flow
All constructed stormwater conveyance outlets shall be directed and maintained as diffuse flow at
non - erosive velocities through the protected stream buffers such that it will not re- concentrate
before discharging into a stream as identified within 1SA NCAC 2B .0233 (5). If this is not
possible, it may be necessary to provide statmiwater %:ilities that are considered to remove
nitrogen. This may require additional approval from this Office.
8. Compensatory Mitigation Using the Ecosystem Enhancement Program (EEP)
Mitigation must be provided for the proposed as specified in the table below. We
understand that you wish to make a payment to the Wetlands Restoration Fund administered by
the NC Ecosystem Enhancement Program (EEP) to meet this mitigation requirement. This has
been deternrined by the DWQ to be a suitable method to meet the mitigation requirement. Until
the EEP receives and clears your check (made payable to: DEW — Ecosystem Entrancement
Program Office), no impacts specified in this Authorization Certificate shall occur. The EEP
should be contacted at [phone] if you have any questions concerning payment into a
restoration fiord. You have one month from the date of this approval to make this payment. For
acconnting purposes, this Authorization Certificate authorizes payment into the Wetlands
Restoration Fund to meet the following compensatory mitigatlon requirement:
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. The auction to proceed with your proposed impacts or to conduct
impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon
expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved wetland or
stream impacts), you may ask for an adjudicatmy hearing. You must act within 60 days of the date that
you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 1SOB of
the North Carolina General Statutes to the Office of eve Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699 -6714. This certification and its conditions are final and binding unless you ask for a
hearing.
Any disputes over deierminatiarns regarding this Authorization Certificate (associated with the approved
buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is
subject to review as provided in Articles 3 and 4 of G.S. ISOB.
1 Comnpensatory Mitigation
River and Sub -basin Number
103020201
S
370 feet
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. The auction to proceed with your proposed impacts or to conduct
impacts to waters as depicted in your application and as authorized by this Certification, shall expire upon
expiration of the 404 or CAMA Permit.
If you do not accept any of the conditions of this Certification (associated with the approved wetland or
stream impacts), you may ask for an adjudicatmy hearing. You must act within 60 days of the date that
you receive this letter. To ask for a hearing, send a written petition, which conforms to Chapter 1SOB of
the North Carolina General Statutes to the Office of eve Hearings, 6714 Mail Service Center,
Raleigh, N.C. 27699 -6714. This certification and its conditions are final and binding unless you ask for a
hearing.
Any disputes over deierminatiarns regarding this Authorization Certificate (associated with the approved
buffer impacts) shall be referred in writing to the Director for a decision. The Director's decision is
subject to review as provided in Articles 3 and 4 of G.S. ISOB.

Winston Pointe
Page 4 of 4
March 2, 2005
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act and the Neuse riparian buffer protection rule as described within 15A NCAC 2B .0233. If you have
any questions, please telephone John Donley or Cyndi Karoly at 919 - 733 -1786.
Sincerely,
1
Alan W. Klimek, P.E.
AWK/cbk
Enclosures: GC 3402, 3404
Certificate of Completion
cc: John Teel, 319 Chapanoake Road, Raleigh, NC, 27603•
USACE Raleigh Regulatory Field Office ,
DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Central Files
Filename: 041488Winstton(Johnston)401 +NBR

ATF9 Michael F. Finley, Govemor
QG William G. Rosa Jr.. secretary
CAINorth Carolina Dgwlment of Emriroattttmtt ad Natural Resowea
Nov � Alan W. Klimek, P.E. Director
Division of water Quality
a1
North Carolina Division of water Quality
401 Water Quality Cerdiication
Summary of Permitted Impacts and Mitigation Requirements
In accordance with 1 SA NCAC 2H.0500, Mr. Algie Stephens has permission as outlined below to impact
0.31 acres of wetlands and 370 linear feet of streams for the purpose(s) of constructing the proposed
Winston Pointe Subdivision in Johnston County. All activities associated with these authorized impacts
must be conducted with the conditions listed in the attached Permit transmittal letter. THIS PERMIT IS
NOT VALID WITHOUT THE ATTACHMENTS.
COMPENSATORY MITIGATION REQUIREMENTS, ECOSYSTEM ENHANCEMENT PROGRAM
LOCATION:
COUNTY
BASIN/ SUB BASIN
Winston Pointe Subdivision
Johnston
03020201
As required by 15A NCAC 2H.0500, and the conditions of this Permit, you are required to compensate
for the above impacts through the restoration, creation, enhantement or preservation of wetlands and
surface waters as outlined below prior to conducting any activities that impact or degrade the waters of
the state.
Note: Acreage requirements proposed to be mitigated through the Ecosystem Enhancement Program must
be rounded to one - quarter acre increments and linear foot requirements must be rounded up to the nearest
foot according to 15 2R.0503(b).
Impacts:
0.31 Acres of Class WL wetlands
370 Linear feet of streams
23,770 square feet of stream buffers
Mitigation:
370 Linear feet of streams
In correspondence dated February 2,2W5, the EEP indicated that mitigation. ill be conducted by EEP'if
necessary for this project.
One of the options you have available to satisfy the compensatory mitigation requirement is through the .
payment of a fee to the Wetlands Restoration Fund per NCAC 2R.0503. If you choose this option, please
sign this form and mail it along with a copy of your 401 Certification or Buffer Appmval to the
Ecosystem Earthancement Program at the address below. An hamce for the appropriate amount of
payment will be sent to you upon receipt of d s form. PLEASE NOTE, THE ABOVE IMPACTS ARE
NOT AUTHORIZED UNTL YOU RECEIVE NOTIFICATION THAT YOUR PAYMENT HAS BEEN
e. ale I 3*0314141 0 �-u4z!:_i_ f� 1:4 4 "Y Lq:
Signature
401 Wedenh Ceftgm LM
1660 8V"Cettter. PAM^ N tdt Cmdu 47669.1660
x121 CtaVM ®mb" sulfa 2Q ft4k WO Coda 2W
Photo 919 -MIM FAX 1b 1 A-
I11

l
Mr. Algie Stephens
Page 2 of 2
March 2, 2005
ECOSYSTEM ENHANCEMENT PROGRAM
1652 Mail Service Centel
RALEIGH, N.C. 27669 -1652
(919) 733 -5205
Filename: 041488Winston(Johnston)EEP

AMA
I05 R
North Carolina Department of Environment and Natural Resources
Division of water oudG
Beverly Eaves Perdue Charles Wakild, P. E. Dee Freeman
Governor Director Secretary
May 16, 2012
DWQ Project # 2004- 1488 -v7
Johnston County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Burdette Land Consulting, Inc.
Attn: Mrs. Jennifer Burdette
10212 Creedmoor Road
Raleigh, NC 27615
Subject Property: Winston Pointe, Clayton
On -Site Determination for Applicability to the Neuse River Riparian Area Protection Rules (15A NCAC 2B
.0233)
Dear Mrs. Burdett-:
On May 4, 2012, at your request Amy Chapman conducted an on -site determination to review 2 features
located on the subject property for applicability to the Neuse Buffer Rules (15A NCAC 2B .0233). The
features are labeled as "Stream B" and "Stream C" on the attached map initialed by Amy Chapman on
May 16, 2012. Division of Water Quality (DWQ) Staff from the Central Office in the Express Review
Program (Lia Myott) had previously conducted an on -site determination of the streams. In your letter to
the Director dated May 2, 2012, you requested an appeal of their determination as provided within 15A
NCAC 02B .Q233(3Xa).
The DWQ has determined that the stream labeled as "Stream B" on the attached map is at least
"intermittent" at flag `B2" and the stream labeled as "Stream C" on the attached may is at least
intermittent at flag "C2 "and are both subject to the Neuse Buffer Rule.
This determination shall replace the determination originally performed by the Central Office in
the Express Review Program and shall expire five years from the date of this letter.
You can contest the Director's decision as provided in Articles 3 and 4 of G.S. 150B. To contest the
Director's decision you must file a petition for an administrative hearing. You may obtain the petition
form from the office of Administrative hearings. You must file the petition with the office of
Administrative Hearings within sixty (60) days of receipt of this notice. A petition is considered filed
when it is received in the office of Administrative Hearings during normal office hours. The Office of
Administrative Hearings accepts filings Monday through Friday between the hours of 8:00am and
5:00pm, except for official state holidays. The original and one (1) copy of the petition must be filed with
the Office of Administrative Hearings.
Wetlands Buffers, Stonmwater, Compliance and Permitting Unit (WeesCaPe) �e
1650 Mail Service Center, Raleigh, North Carolina 27699 -1650
Phone [phone] FAX [phone] N hC yarrolli /na
Internet http.11portal.ncdenr orgtweblwghrs ` rQ��` �i`U
An Equal Opportunity 1 Affirmative Action Employer

0
Burdette
Page 2 of 2
May 16, 2012
The petition may be faxed- provided the original and one copy of the document is received by the Office
of Administrative Hearings within five (5) business days following the faxed transmission.
The mailing address for the Office of Administrative Hearings is:
Office of Administrative Hearings
6714 Mail Service Center
Raleigh, NC 27699 -6714
Telephone: [phone], Fax: [phone]
A copy of the petition must also be served to DENR as follows:
Mr. William Cary, General Counsel
Department of Environment and Natural Resources
1601 Mail Service Center
Raleigh, NC 27699 -1601
This stream and its associated buffers should be identified on any future plans for this property. The
owner (or future owners) should notify the DWQ (and other relevant agencies) of this decision in any
future correspondences concerning this property.
This letter only addresses the applicability to the buffer rules and does not approve any activity within the
buffers. Nor does this letter approve any activity within Waters of the United States or Waters of the
State. If you have any additional questions or require additional information please call Amy Chapman at
(919)807 -6400. This determination is subject to review as provided in Articles 3 & 4 of G.S. 150B.
CW/kah/asc
Enclosures: Consultant's verification map
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
File Copy
Sincerely,
Charles Wakild, P.E.
Filename: 0414Uv7wins tonPoinUe(Johnston)NBR Appeal

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r
WETLAND
LL-
Appeox Im WETLAND.
JURISDICTIONAL STREAM CHANNELS THAT ARE
SUBJECT TO THE NEUSE RIVER RIPARIAN
BUFFER RULES
GRAPHIC SCALE
1" = 500'
500' 0 500' 1000`
•N�
W E BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh. North Carolina 27615
S Telephone [phone] — Fax [phone]
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LEGEND
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JURISDICTIONAL STREAM CHANNELS THAT ARE
SUBJECT TO THE NEUSE RIVER RIPARIAN
BUFFER RULES
GRAPHIC SCALE
1" = 500'
500' 0 500' 1000`
•N�
W E BURDETTE LAND CONSULTING, INC.
10212 Creedmoor Road - Raleigh. North Carolina 27615
S Telephone [phone] — Fax [phone]
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A DRAINAGE DESIGNATIONS C -7
CL CENTERLINE
I
JURISDICTIO14AL
WETLANDS
ISOLATED
WETLANDS
NOTES:
1.) THIS MAP IS FOR PRELIMINARY PLANNING PURPOSES ONLY.
2.) THE DESIGNATION AND LIMITS OF THESE FEATURES HAVE NOT BEEN
AND MUST BE VERIFIED BY THE US ARMY CORDS OF ENGINEERS
AND THE NORTH CAROLINA DIVISION OF WATER QUALITY.
3.) THIS MAP IS A COMPILATION OF BLC'S DETAILED SURFACE WATER
AND WETLAND EVALUATION SURVEYED BY STEWART & PROCTOR
OVERLAYED WITH JOHNSTON COUNTY GIS,
DATE: 05 -02 -1
SURFACE WATER & WETLANDS EVALUATION MAP I SCALE: 1° -51
WINSTON POINT SUBDIVISION I DRAWN BY: J
CLAYTON, JOHNSTON COUNTY. NC 1 CHK'D B-�: Ja
PROTECT #: E:
FIGURE: 3

SUBDIVISION NAME: Winston Pointe
LOCATION: Between Winton Road (SR 1550) and Winston Pointe Drive.
P.U.D. zoning district (Clayton Township)
DEVELOPER: The Stephens Center, Inc
319 Chapanoke Road
Raleigh, NC 27603
CONSULTANT: STEWART- PROCTOR PLLC
319 Chapanoke Road, Suite 106
Raleigh. NC 27603
PHONE: [phone]
FAX: [phone]
GENERAL INFORMATION
The total area for Winston Pointe Phase 1 is 19.36 acres. The purpose for Phase 1 will be
for the construction of active recreation area as required by Town of Clayton. The
proposed road will connect the existing roads Winston Pointe Drive and Winston Road
S.R.1550. This in turn will provide another access for the existing subdivision as well as
access for future phases. Currently there is only one access now which is through Valley
Drive onto Guy Road S.R.1551.
IMPERVIOUS AREA
Approximately 4,035 linear feet of street will be created, with a Right of Way width of 50
feet. Grass lined ditches will be installed to direct drainage to easements. The expected
imperviousness is:
Roadway: 40351.f. x 20' = 80,700 sf
Total: 2.32 ac. = 12% total impervious area for Phase 1
Proposed impervious area = 2.32 ac./ 19.36 ac. = 12.0%
Allowable impervious area = 19.36 ac. x 12% = 2.32 ac. or 101,199 sf
The design will meet the maximum allowable design impervious surface limits.
However, voluntary measures will be implemented to improve the effect of
the future development on the surrounding drainageways. These include ending
constructed swales with vegetated level spreaders whenever possible, careful
limitation on clearing limits, and construction of retention pond for future
impervious area.

PEAK RUNNOFF REDUCTION
One pond area is shown on plans. This pond is designed to attenuate
the peak runoff of the future commercial impervious. See storm water
calculation.
LAND DEDICATION
Not required.
NITROGEN LOADING ESTIMATION
Use Method 2
(1)
(2)
(3)
(4)
Type of Land Cover
Area
TN Export Coeff.
TN Export from
(acres)
(lbs/ac /yr)
use
(lbs/yr)
Permanently preserved
2.09
0.6
1.25
Undisturbed open space
Permanently preserved
14.95
1.2
17.94
Managed open space
Impervious surface
2.32
21.2
49.18
TOTAL
19.36
-
68.39
The total N- loading from the site is (68.39 lbs/yr)/19.36ac = 3.53 lbs/ac. This
does not exceed the 3.6 lbs/ac limit: therefore nitrogen offset payment or water
quality BMP's will not be required.
EXISTING DRAINAGEWAYS
There are three internal drainage areas on this site all are unnamed tributaries
to White Oak Creek. These streams have been identified by NCDENR and
are shown on plans. There are 50' buffer placed on each side of the drainageways
and one intermitted crossing is planned.

1 � -
0)
LOD goes
♦466 ZONE 2 /
♦ RIPARIAN / ZONE 1
226, �� BUFFER I 7RIPARIAN
- / I BUFFER
H � .
\
224. WETLANDS NAIL
222.
\ JU_ 15D DSONAL
ZONE 2
RIPARIAN
\ CHECK DA BUFFER
\ W /PIT
NHCT DAM ♦♦ \� y , \ ♦ ♦♦
LOD
IMPACT AREA 'A' �.
S1 — UWAR FEET OF STREAM " N LOD 144 IF 4
SI — STREAM IMPACT AREA 290 SF.0=6 Ac. •. I -PR C um Sao nM rm
®W-1 JJRISDICTMAL 1EILAND IMPACT AREA 999 SF .06015 A06 , w rtar WNSMN PaNTE
W ERIOR BUFFER AREA (ZONE 1) 3,701 SF LOD .er�.w
E)Clum R BUFFER AREA (ZONE 2) 2.380 SF e+t[ mwaoms ma WA CLAW=10 rsa wmmmr
rws tttr a A t oaten Iarm
tam /..s NR wt -GP-f

\ CH T DAM
W PIT
y 7CT D4-\ \ \ \
\ \ \
\ ISOLATED
inn r.p
282
Ai57 STONE ONg%
LE�L LTER FABRIC
SPREADER LIP, I FORE�AY
i
NT
4APCE-----1
CANNEL EDP ' LEVEL
SPREADER #1
IMPACT AREA W
Qw-2 &M5M1 M& %EUAW WALT AREA 3N 5F, aoos
CLOD \
1 \ \
40 i
EM--------- E
D_5 SB #7
WETLAND
IMPACT AREA
\ `e
\ �H7CT DAM
xo
o\ r'
A �
�sr I N'Jmsmm Pam7r

UneNo. Line ID Flow Rate Une Sine(Rise x Span) LineType UneLength Invert Elev.Down Invert Elev.Up UneSlope HGLDown HGLUp N6nortoss HGUunct Dn StrUne No.
(ds) (in) (ft) (ft) (ft) M (ft) (ft) (ft) (it)
1 Pipe K 26.53 30 Cir 60.00 269.00 270.00 1.57 270.80 271,72 n/a 271.7) Outfall
LOD
.O
tvo
IMPACT AREA 'C"
j=Vl-3AMWCM0NALWTLAMGWACTAFtEA 580 SF, 0.013 Ac

STORM WATER
MANAGEMENT
FOR
WINSTON POINTE

,Y {
STORM WATER SUPPLEMENT DEVICE #6
PURPOSE: TO RELEASE POST DEVELOPMENT RUNOFF AT A
RATE NOT TO EXCEED PRE - DEVELOPMENT RUNOFF. PROVIDE
STORAGE AND WATER SURFACE AREA TO PROVIDE FOR T.S.S.
AND NITROGEN LOADING REDUCTION.
PLAN: - COMPUTE SURFACE AREA NEEDED
- COMPUTE VOLUME OF 1" FLUSH
- COMPUTE TARGET RUNOFF RATE.
- COMPUTE RUNOFF RATE WITH DESIGN PLAN.
- DESIGN FEATURES OR CONTROLS TO MEET
PURPOSE AND PROVIDE REQUIRED STORAGE.

,Y
OUTLET DEVICE #6
SURFACE AREA REQUIRED
ESTIMATED IMPERVIOUS SURFACE PERCENTAGE FOR TOTAL DRAINAGE
AREA TO THE STORAGE DEVICE IS 70 %.
FOR A 5 FOOT DEEP PERMANT POOL THE SURFACE AREA REQUIRED
WOULD BE 2.07% OF THE TOTAL DRAINAGE AREA TO THE DEVICE.
IF:
D.A. TOTAL = 21.7 ACRE
THEN:
2.07% OF 21.7 ACRES = 19,567 SQUARE FEET
SURFACE AREA PROVIDED FOR PERMANENT POOL = 19,670 SQUARE FEET
VOLUME REQUIRED
VOLUME CALCULATED BY SIMPLE METHOD DESCRIBED BY THE NCDWQ
BMP DESIGN MANUAL.
Rv = 0.05 + 0.9 * Ia
Ia = 15.2ac imp / 21.7ac d.a. = 0.70
Rv= 0.05 +0.9 * 0.70 =0.665
V = 3630 * 1" * 0.665 * 21.7 = 52,383Fe
VOLUME REQUIRED = 52,383Fe
VOLUME PROVIDED = 54,093Fe
STAGE 2.50' ABOVE WATER SURFACE
DRAW DOWN TIME = 77HRS

,Y 4
COMBINATION STORM WATER CALCULATIONS
Iyr STORM
DETERNIINE PRE DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESRIBED IN THE Tr -55 MANUAL
Qp= quXAmXQ*
DETERMTNR RXTRTTmr,, C :rn VA T .T TR MR CTTR
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
3.60
69
B
FAIR WOODS
18.1
60
K-3.vv 1& oy) t k 15.1 A OU) J / L I./ =02
Cn PRE = 62
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR EXISTING CONDITIONS
FOR THE 1 yr / 3" EVENT
P = 3»
A = 21.7ac — 0.034mi2
S = [1000 /Cn] -10
= 6.13
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* = 0.40"
Ia =1.226
IaA/P = 0.41
Tp = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Tp = 0.96hr
Qu = 245 (EXHIBIT 4 -11)
Qp = 245(0.034)0.40 = 3.33 cfs
PEAK FLOW FOR THE 1 YEAR EVENT = 3.33 cfs
i
J

t 4
COMBINATION STORM WATER CALCULATIONS
I Oyr STORM
DETERIVIINE PRE DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESRIBED IN THE Tr -55 MANUAL
Qp= quXAmXQ*
DETERMINE EXISTING Cn VAI.IIF FOR STTF.
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
3.60
69
B
FAIR WOODS
18.1
60
10.OUA09) +(18.1 X6U)J/21.7 =62
Cn PRE = 62
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR EXISTING CONDITIONS
FOR THE I Oyr / 5.38" EVENT
P = 5.38"
A = 21.7ac — 0.034mi2
S = [1000 /Cn] -10
= 6.13
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* =1.68"
Ia =1.226
IaA/P = 0.23
Tp = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Tp = 0.96hr
Qu = 340 (EXHIBIT 4 -I1)
Qp = 340(0.034)1.68 = 19.42 cfs
PEAK FLOW FOR THE 10 YEAR EVENT =19.42 cfs
i
f
i

e 4
DETERMINE POST DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESR.IBED IN THE Tr -55 MANUAL
3" EVENT
Qp= quXAmXQ*
DETERMINE PROPOSED Cn VALUE FOR SITE
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
4.50
69
B
IMPERVIOUS
15.19
98
B
FAIR WOODS
2.01
60
[(4.50 X 69) + (15.19 X 98) + (2.01 X 60)] / 21.7 = 89
Cn POST = 89
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR PROPOSED CONDITIONS
FOR THE Iyr / 3" EVENT
P = 31,
A = 21.7ac — 0.034mi2
S = [1000 /Cn] -10
=1.24
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* =1.90"
Ia = 0.248
IaA/P = 0.083
Tp = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Qu = 375 (EXHIBIT 4 -I1)
Tp. = 0.96hr
Qp = 375(0.034)1.90 = 24.23 cfs
PEAK FLOW FOR THE 1 YEAR EVENT = 24.23 cfs

•
DETERMINE POST DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESRIBED IN THE Tr -55 MANUAL
5.38" EVENT
Qp= quXAmXQ*
DETERMINE PROPOSED Cn VALTTF FOR RTTR
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
4.50
69
B
IMPERVIOUS
15.19
98
B
FAIR WOODS
2.01
60
[(4.50 X 69) + (15.19 X 98) + (2.01 X 60)] / 21.7 = 89
Cn POST = 89
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR PROPOSED CONDITIONS
FOR THE IOyr / 5.38" EVENT
P = 5.38"
A = 21.7ac — 0.024mi2
S = [1000 /Cn] -10
=1.24
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* = 4.13"
Ia = 0.248
IaA/P = 0.05
TP = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Qu = 375 (EXHIBIT 4 -I1)
Tp = 0.96hr
Qp = 375(0.034 )4.13 = 52.66 cfs
PEAK FLOW FOR THE 10 YEAR EVENT = 52.66 cfs

c i
COMBINATION STORM WATER CALCULATIONS
100yr STORM
DETERNIINE PRE DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESRIBED IN THE Tr -55 MANUAL
Qp= quXAmXQ*
DETERMINE EXISTING Cn VALUE FOR SITE
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
3.60
69
B
FAIR WOODS
18.1
60
1(3.60 X 69) + (18.1 X 60)] / 21.7 = 62
Cn PRE = 62
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR EXISTING CONDITIONS
FOR THE 100yr / 8" EVENT
P = 8»
A = 21.7ac — 0.034mi2
S = [1000 /Cn] -10
= 6.13
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* = 3.56"
Ia =1.226
IaA/P = 0.15
l
Tp = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Tp = 0.96hr
Qu = 350 (EXHIBIT 4 -I1)
Qp = 350(0.034)3.56 = 42.36 cfs
PEAK FLOW FOR THE 100 YEAR EVENT = 42.36 cfs

1 4
DETERMINE POST DEVELOPMENTAL CONDITIONS:
DISCHARGE BY SCS METHOD AS DESRIBED IN THE Tr -55 MANUAL
8" EVENT
Qp= quXAmXQ*
DETERMINE PROPOSED Cn VALUE FOR SITE
SOIL CLASS
USE
AREA ac
Cn
B
FAIR PASTURE
4.50
69
B
IMPERVIOUS
15.19
98
B
FAIR WOODS
2.01
60
[(4.50 X 69) + (15.19 X 98) + (2.01 X 60)] / 21.7 = 89
Cn POST = 89
DETERMINE RUNOFF DEPTH AND PEAK FLOW FOR PROPOSED CONDITIONS
FOR THE I00yr / 8" EVENT
P = 8"
A = 21.7ac — 0.034mi2
S = [1000 /Cn] -10
=1.24
Q* = [(P- 0.2S)2] / (P +0.8S)
Q* = 6.68"
Ia = 0.248
IaA/P = 0.03
Tp = CALC DETAILS ATTACHED
SHEET FLOW = 0.87hr
SHALLOW FLOW = 0.07hr
CHANNEL FLOW = 0.02hr
Qu = 375 (EXHIBIT 4 -II)
Tp = 0.96hr
Qp = 375(0.034)6.68 = 85.17 cfs
PEAK FLOW FOR THE 100 YEAR EVENT = 85.17 cfs
i

a
SUMMARY DEVICE #6
OUTLET WILL CONSEST OF ONE 72in DIAMETER H.D.P.E.
OUTLET RISER PIPE WITH HOLES BORED INTO IT. EVERY HALF
FOOT VERTICALY THERE WILL BE A ROW OF 20 X 1 inch RADIUS
HOLES SET ROUGHLY 7.5inchs ON CENTER. THE ROWS WILL BE
STAGGARED. THE OUTLET BARRELL WILL BE A 36inch H.D.P.E.
PEAK FLOWS FROM THE STORMS:
1 YEAR:
PRE: 3.33 cfs
POST: 24.23 cfs
DEVICE: 3.2 cfs
10 YEAR:
PRE: 19.42 cfs
POST: 52.66 cfs
DEVICE: 8.1 cfs
THE 100 YEAR STORM IS PASSED THROUGH A DESIGNED
SPILLWAY TO CARRY THE 100 YEAR FLOW AWAY FROM THE
DEVICE.
EMERGENCY SPILLWAY DESIGN
Qioo = 85.17 cfs
Q = CLH3rz
SOLVING FOR L LEAVES L= Q /(CH3n)
L = 85.17/(3)1 "' = 28.39
MAKE L = 29'
EMERGENCY SPILLWAY IS V HIGH WITH AN OPENING 29' WIDE.

ELEVATIONS:
PERMENANT POOL: FROM 291' TO 296'
1" RAINFALL EVENT STOARAGE: FROM 296' TO 298.5'
STORMWATER EVENT STORAGE: FROM 298.5' TO 299.5'
SPILLWAY ELEVATIONS FROM 301.0' TO 302.0'
TOP OF DAM: 302.0'

RETENTION DEVICE #6
STAGE- STORAGE
CONTOUR
REGRESSION
STAGE
AREA
STORAGE
TOTAL STORAGE
ELEV.
FT.
SOFT. )
(CU.FT.)
(CU.
298.50
7.50
28315
0
0
299.00
0
8.00
29285
14400
14400
299.25
8.25
29775
7363
21783
299.50
8.50
30266
7505
29286
299.75
8.75
30765
7629
36917
300.00
1
9.00
31286
7754
44671
300.25
9.25
31770
7880
52550
300.50
9.50
32278
8006
60556
300.75
9.75
32789
8133
68690
301.00
2
10.00
33304
8262
76951
301.25
10.25
33622
8391
85342
301.50
10.50
34344
8521
93863
301.75
10.75
34869
8652
102515
302.00
3
11.00
35398
8783
111298
302.25
11.25
35930
8916
120214
302.50
3.5
11.50
36466 1
9050
129263

RETENTION DEVICE #6
1 YEAR EVENT
TIME
INFLOW
STORAGE
STAGE
OUTFLOW
FOOT 0
FOOT 0.5
FOOT 1
FOOT 1.5
FOOT 2
FOOT 2.5
RISER
IN
0
CFS
0
CU. FT. )
0
(Fl)
0.0
0.0
(CFS )
0.0
(CFS)
0.0
(CFS)
0.0
(CFS)
0.0
(CFS)
0.0
(CFS
0.0
CFS
0.00
1
0.29
0.00
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.00
2
1.14
17.23
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.00
3
2.50
84
0.0
0.1
0.1
0.0
0.0
0.0
0.0
0.0
0.00
4
4.33
229
0.0
0.1
0.1
0.0
0.0
0.0
0.0
0.0
0.00
5
6.52
481
0.0
0.2
0.2
0.0
0.0
0.0
0.0
0.0
0.00
6
8.98
861
0.0
0.3
0.3
0.0
0.0
0.0
0.0
0.0
0.00
7
11.59
1384
0.0
0.3
0.3
0.0
0.0
0.0
0.0
0.0
0.00
8
14.22
2059
0.1
0.4
0.4
0.0
0.0
0.0
0.0
0.0
0.00
9
16.75
2886
0.1
0.5
0.5
0.0
0.0
0.0
0.0
0.0
0.00
10
19.06
3861
0.1
0.6
0.6
0.0
0.0
0.0
0.0
0.0
0.00
11
21.05
4968
0.1
0.7
0.7
0.0
0.0
0.0
0.0
0.0
0.00
12
22.61
6190
0.2
0.8
0.8
0.0
0.0
0.0
0.0
0.0
0.00
13
23.67
7499
0.2
0.9
0.9
0.0
0.0
0.0
0.0
0.0
0.00
14
24.18
8867
0.3
1.0
1.0
0.0
0.0
0.0
0.0
0.0
0.00
15
24.13
10261
0.3
1.0
1.0
0.0
0.0
0.0
0.0
0.0
0.00
16
23.50
11646
0.4
1.1
1.1
0.0
0.0
0.0
0.0
0.0
0.00
17
22.33
12990
0.4
12
1.2
0.0
0.0
0.0
0.0
0.0
0.00
18
20.68
14259
0.5
1.2
1.2
0.0
0.0
0.0
0.0
0.0
0.00
19
18.92
15426
0.5
2.6
1.3
1.3
0.0
0.0
0.0
0.0
0.00
20
17.29
16406
0.5
2.7
1.3
1.3
0.0
0.0
0.0
0.0
0.00
21
15.79
17284
0.6
2.7
1.4
1.4
0.0
0.0
0.0
0.0
0.00
22
14.43
18067
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
23
13.18
18764
0.6
2.9
1.4
1.4
0.0
0.0
0.0
0.0
0.00
24
12.05
19382
0.6
2.9
1.5
1.5
0.0
0.0
0.0
0.0
0.00
25
11.01
19930
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
26
10.06
20412
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
27
9.19
20835
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
28
8.40
21203
0.7
3.1
1.5
1.5
0.0
0.0
0.0
0.0
0.00
29
7.67
21522
0.7
3.1
1.6
1.5
0.0
0.0
0.0
0.0
0.00
30
7.01
21797
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
31
6.40
22030
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
32
5.85
22226
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
33
5.35
22387
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
34
4.88
22518
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
35
4.46
22620
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
36
4.08
22697
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
37
3.73
22750
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
38
3.40
22782
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
39
3.11
22794
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
40
2.84
22789
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00

41
42
43
44
2.60
2.37
2.17
1.98
22767
22731
22682
22620
0.8
0.8
0.8
0.8
3.2
3.2
3.2
3.2
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.00
0.00
0.00
45
1.81
22548
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
46
1.65
22466
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
47
1.51
22374
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
48
1.38
22275
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
49
1.26
22168
0.8
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
50
1.15
22055
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
51
1.05
21935
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
52
0.96
21610
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
53
0.88
21681
0.7
3.1
1.6
1.6
0.0
0.0
0.0
0.0
0.00
54
0.80
21547
0.7
3.1
1.6
1.5
0.0
0.0
0.0
0.0
0.00
55
0.73
21409
0.7
3.1
1.5
1.5
0.0
0.0
0.0
0.0
0.00
56
0.67
21267
0.7
3.1
1.5
1.5
0.0
0.0
0.0
0.0
0.00
57
0.61
21123
0.7
3.1
1.5
1.5
0.0
0.0
0.0
0.0
0.00
58
0.56
20975
0.7
3.1
1.5
1 1.5
0.0
0.0
0.0
0.0
0.00
59
0.51
20826
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
60
0.47
20674
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
61
0.43
20520
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
62
1 0.39
20364
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
63
0.36
20207
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
64
0.33
20049
0.7
3.0
1.5
1 1.5
0.0
0.0
0.0
0.0
0.00
65
0.30
19890
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
66
0.27
19730
0.7
3.0
1.5
1.5
0.0
0.0
0.0
0.0
0.00
67
0.25
19569
0.7
2.9
1.5
1.5
0.0
0.0
0.0
0.0
0.00
68
0.23
19407
0.7
2.9
1.5
1.5
0.0
0.0
0.0
0.0
0.00
69
0.21
19245
1 0.6
2.9
1.5
1.5
0.0
0.0
0.0
0.0
0.00
70
0.19
19083
0.6
2.9
1.5
1.4
0.0
0.0
0.0
0.0
0.00
71
0.17
18920
0.6
2.9
1.4
1.4
0.0
0.0
0.0
0.0
0.00
72
0.16
18757
0.6
2.9
1.4
1.4
0.0
0.0
0.0
0.0
0.00
73
0.14
18594
0.6
2.9
1.4
1.4
0.0
0.0
0.0
0.0
0.00
74 1
0.13
18432
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
75
0.12
18269 1
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
76
0.11
18106
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
77
0.10
17944
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
78
0.09
17782
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
79
0.08
17620
0.6
2.8
1.4
1.4
0.0
0.0
0.0
0.0
0.00
80
0.08
17458
0.6
2.8
1.4
1.4 1
0.0
0.0
0.0
0.0
0.00
81
0.07
17297
0.6
2.7
1.4
1.4
0.0
0.0
0.0
0.0
0.00
82
0.06
17137
0.6
2.7
1.4
1.4
0.0
0.0
0.0
0.0
0.00
83
0.06
16977
0.6
2.7
1.4
1.4
0.0
0.0
0.0
0.0
0.00
84
0.05
16817
0.6
2.7
1.4
1.3
0.0
0.0
0.0
0.0
0.00
85
0.05
16658
0.5 1
2.7
1.3
1.3
0.0
0.0
0.0
0.0
0.00
86
0.04
16500
0.5
2.7
1.3
1.3
0.0
0.0
0.0
0.0
0.00
87
0.04
16342
0.5
2.7
1.3
1.3 1
0.0
0.0
0.0
0.0
0.00

RETENTION DEVICE #6
STAGE -
STORAGE
CONTOUR
REGR
STAGE
AREA
TO
TOTAL STORAGE
ELEV.
FT.
SQ.FT.
CU.FT.
CU.
298.50
7.50
28315
0
0
299.00
0.00
8.00
29285
14400
14400
299.25
8.25
29775
7383
21783
299.50
0.50
8.50
30268
7505
29288
299.75
8.75
30765
7629
36917
300.00
1.00
9.00
31266
7754
44671
300.25
9.25
31770
7880
52550
300.50
1.50
9.50
32278
8006
60556
300.75
9.75
32789
8133
68690
301.00
2.00
10.00
33304
8262
76951
301.25
10.25
33822
8391
85342
301.50
2.50
10.50
34344
8521
93863
301.75
10.75
34869
8652
102515
302.00
3.00
11.00
35398
8783
111298
302.25
11.25
35930
8916
120214
302.50
3.50
11.50
36466
9050
129263

RETENTION DEVICE #6
10 YEAR EVENT
TIME
MIN )
0
1
INFLOW
(CFS)
0
0.62
STORAGE
(CU. FT. )
0
0.00
STAGE
(FT)
0.00
0.00
OUTFLOW
0.0
0.0
FOOT 0
(CFS )
0.0
0.0
FOOT 0.5
(CFS)
0.0
0.0
FOOT 1
(CFS)
0.0
0.0
FOOT 1.5
(CFS)
0.0
0.0
FOOT 2
(CFS)
0.0
0.0
FOOT 2.5
(CFS)
0.0
0.0
RISER
(CFS
0.00
0.00
2
2.47
37.45
0.00
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.00
3
5.44
183
0.00
0.1
0.1
0.0
0.0
0.0
0.0
0.0
0.00
4
9.41
502
0.01
02
0.2
0.0
0.0
0.0
0.0
0.0
0.00
5
14.17
1055
0.03
0.3
0.3
0.0
0.0
0.0
0.0
0.0
0.00
6
19.52
1888
0.05
0.4
0.4
0.0
0.0
0.0
0.0
0.0
0.00
7
25.18
3034
0.08
0.5
0.5
0.0
0.0
0.0
0.0
0.0
0.00
8
30.90
4513
0.13
0.7
0.7
0.0
0.0
0.0
0.0
0.0
0.00
9
36.41
6328
0.19
0.8
0.8
0.0
0.0
0.0
0.0
0.0
0.00
10
41.43
8465
026
0.9
0.9
0.0
0.0
0.0
0.0
0.0
0.00
11
45.74
10895
0.34
1.1
1.1
0.0
0.0
0.0
0.0
0.0
0.00
12
49.13
13576
0.44
1.2
1.2
0.0
0.0
0.0
0.0
0.0
0.00
13
51.44
16451
0.54
2.7
1.3
1.3
0.0
0.0
0.0
0.0
0.00
14
52.56
19377
0.65
2.9
1.5
1.5
0.0
0.0
0.0
0.0
0.00
15
52.43
22356
0.76
3.2
1.6
1.6
0.0
0.0
0.0
0.0
0.00
16
1 51.07
25312
0.87
3.4
1.7
1.7
0.0
0.0
0.0
0.0
0.00
17
48.54
28173
0.98
3.6
1.8
1.8
0.0
0.0
0.0
0.0
0.00
18
44.95
30869
1.08
4.3
1.9
1.9
0.5
0.0
0.0
0.0
0.00
19
41.12
33307
1.18
4.7
2.0
2.0
0.8
0.0
0.0
0.0
0.00
20
37.57
35491
1.26
5.0
2.0
2.0
0.9
0.0
0.0
0.0
0.00
21
34.33
37443
1.34
5.3
2.1
2.1
1.1
0.0
0.0
0.0
0.00
22
31.36
39186
1.41
5.5
2.2
2.2
1.2
0.0
0.0
0.0
0.00
23
28.66
40739
1.47
5.7
2.2
2.2
1.3
0.0
0.0
0.0
0.00
24
26.18
42119
1.53
7.1
2.3
2.2
1.3
1.3
0.0
0.0
0.00
25
23.92
43261
1.57
7.3
2.3
2.3
1.4
1.4
0.0
0.0
0.00
26
21.86
44257
1.61
7.5
2.3
2.3
1.4
1.4
0.0
0.0
0.00
27
19.97
45120
1.65
7.6
2.3
2.3
1.5
1.5
0.0
0.0
0.00
28
18.25
45863
1.68
7.7
2.4
2.4
1.5
1.5
0.0
0.0
0.00
29
16.67
46495
1.70
7.8
2.4
2.4
1.5
1.5
0.0
0.0
0.00
30
15.23
47027
1.72
7.9
2.4
2.4
1.6
1.6
0.0
0.0
0.00
31
13.92
47468
1.74
7.9
2.4
2.4
1.6
1.6
0.0
0.0
0.00
32
12.72
47827
1.76
8.0
2.4
2.4
1.6
1.6
0.0
0.0
0.00
33
34
11.62
10.62
48110
48326
1.77
1.78
8.0
8.1
2.4
2.4
2.4
2.4
1.6
1.6
1.6
1.6
0.0
0.0
0.0
0.0
0.00
0.00
35
36
37
38
39
40
41
9.70
8.86
8.10
7.40
6.76
6.18
5.64
48479
48576
48622
48622
48580
48499
48385
1.78
1.79
1.79
1.8
1.8
1.8
1.8
8.1
8.1
8.1
8.1
8.1
8.1
8.1
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
2.4
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.00
0.00
0.00
0.00
0.00
0.00

42
43
44
5.16
4.71
4.30
48239
48066
47867
1.8
1.8
1.8
8.0
8.0
8.0
2.4
2.4
2.4
2.4
2.4
2.4
1.6
1.6
1.6
1.6
1.6
1.6
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.00
0.00
45
3.93
47645
1.7
8.0
2.4
2.4
1.6
1.6
0.0
0.0
0.00
46
3.59
47403
1.7
7.9
2.4
2.4
1.6
1.6
0.0
0.0
0.00
47
3.28
47143
1.7
7.9
2.4
2.4
1.6
1.6
0.0
0.0
0.00
48
3.00
46867
1.7
7.9
2.4
2.4
1.5
1.5
0.0
0.0
0.00
49
2.74
46575
1.7
7.8
2.4
2.4
1.5
1.5
0.0
E
0.0
0.00
50
2.50
46271
1.7
7.8
2.4
2.4
1.5
1.5
0.0
0.0
0.00
51
2.29
45955
1.7
7.7
2.4
2.4
1.5
1.5
0.0
0.0
0.00
52
2.09
45629
1.7
7.7
2.4
2.3
1.5
1.5
0.0
0.0
0.00
53
1.91
45294
1.7
7.6
2.3
2.3
1.5
1.5
0.0
0.0
0.00
54
1.74
44951
1.6
7.6
2.3
2.3
1.5
1.5
0.0
0.0
0.00
55
1.59
44601
1.6
7.5
2.3
2.3
1.4
1.4
0.0
0.0
0.00
56
1.46
44245
1.6
7.5
2.3
2.3
1.4
1.4
0.0
0.0
0.00
57
1.33
43885
1.6
7.4
2.3
2.3
1.4
1.4
0.0
0.0
0.00
58
1.22
43520
1.6
7.4
2.3
2.3
1.4
1.4
0.0
0.0
0.00
59
1.11
43151
1.6
7.3
2.3
2.3
1.4
1.4
0.0
0.0
0.00
60
1.02
42780
1.6
7.2
2.3
2.3
1.4
1.4
0.0
0.0
0.00
61
0.93
42406
1.5
7.2
2.3
2.3
1.3
1.3
0.0
0.0
0.00
62
0.85
42031
1.5
7.1
2.2
2.2
1.3
1.3
0.0
0.0
0.00
63
0.77
41854
1.5
7.1
2.2
2.2
1.3
1.3
0.0
0.0
0.00
64
0.71
41276
1.5
5.7
2.2
2.2
1.3
0.0
0.0
0.0
0.00
65
0.65
40975
1.5
5.7
2.2
2.2
1.3
0.0
0.0
0.0
0.00
66
0.59
40673
1.5
5.7
2.2
2.2
1.2
0.0
0.0
0.0
0.00
67
0.54
40369
1.5
5.6
2.2
2.2
1.2
0.0
0.0
0.0
0.00
68
0.49
40064
1.4
5.6
2.2
2.2
1.2
0.0
0.0
0.0
0.00
69
0.45
39758
1.4
5.6
2.2
2.2
1.2
0.0
0.0
0.0
0.00
70
0.41
39452
1.4
5.5
2.2
2.2
1.2
0.0
0.0
0.0
0.00
71
1 0.38
39146
1.4
5.5
2.2
2.2
1.2
0.0
0.0
0.0
0.00
72
0.34
38839
1.4
5.4
2.2
2.1
1.1
0.0
0.0
0.0
0.00
73
0.31
38533
1.4
5.4
2.1
2.1
1.1
0.0
0.0
0.0
0.00
74
0.29
38228
1.4
5.4
2.1
2.1
1.1
0.0
0.0
0.0
0.00
75
0.26
37923
1.4
5.3
2.1
2.1
1.1
0.0
0.0 1
0.0
0.00
76
0.24
37618
1.3
5.3
2.1
2.1
1.1
0.0
0.0
0.0
0.00
77
0.22
37315
1.3 1
5.3
2.1
2.1
1.1
0.0
0.0
0.0
0.00
78
0.20
37012
1.3
5.2
2.1
2.1
1.0
0.0
0.0
0.0
0.00
79
0.18
36711
1.3
5.2
2.1
2.1
1.0
0.0
0.0
0.0
0.00
80
0.17
36411
1.3
5.1
2.1
2.1
1.0
0.0
0.0
0.0
0.00
81
0.15
38112
1.3
5.1
2.1
2.1
1.0
0.0
0.0 1
0.0
0.00
82
0.14
35815
1.3
5.1
2.1
2.1
1.0
0.0
0.0
0.0
0.00
83
0.13
35519
1.3
5.0
2.0
2.0
0.9
0.0
0.0
0.0
0.00
84
0.12
35225
1.3
5.0
2.0
2.0
0.9
0.0
0.0
0.0
0.00
85
0.11
34933
1.2
5.0
2.0
2.0
0.9
0.0
0.0
0.0
0.00
86
0.10
34642
1.2
4.9
2.0
2.0
0.9
0.0
0.0
0.0
0.00
87
0.09
34353
1.2
4.9
2.0
2.0
0.9
0.0
0.0
0.0
0.00
88
0.08
34066
1.2
4.8
2.0
2.0
0.8
F 0.0
0.0
0.0
0.00
89
0.07
33781
1.2
4.8
2.0 1
2.0
0.8
0.0
0.0
0.0
0.00

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: V_1 -,i_ :, _ ,13
BMP drainage area number: al
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(, c 0r\ P S , a Notary Public for the State of
9XA\ &C61 i n ol . , County of bb �� , do hereby certify that
MOLMCW S-I .1111 ems personally appeared before me this
day of _ and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
11J IGI►��s�'''''.
�dke Q
T H
t/11111111111111I�
SEAL
My commission expires (1i IV
Form SW401 -Wet Detention Basin O &M -Rev.4 Page 4 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number.
Wet Detention Basin 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 BW 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 BN P.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
Phis system (check one):
❑ does ❑ does not
This system (check one):
❑ does ❑ does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Important maintenance procedures:
Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potential Problem:
How I will remediate the problem:
The entire BMP
Trash debris is present
Remove the trash debris.
The perimeter of the wet
detention basin
Areas of bare soil and /or
erosive gullies have formed.
Regrade the soil if necessary to
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one -time fertilizer application.
Vegetation is too short or too
-long, I
Maintain vegetation at a height of
approximately six inches.
Form SW401 -Wet Detention Basin O &M -Rev.4 Page 1 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number.
BMP element:
Potential problem:
How I will remediate the problem:
The inlet device: pipe or
Swale
The pipe is clogged.
Unclog the pipe. Dispose of the
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise dame
Erosion is occurring in the
Regrade the swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
revert future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
dying.
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.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sedimentand
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401 -Wet Detention Basin O&M -Rev.4 Page 2 of 4

Permit Number:
(to be provided by DWQ)
Drainage Area Number.
BMP element:
Potential problear.
How I will remediate the problem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present
consult a professional to remove
beavers.
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. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet
the 401 Oversight Unit at 919 -733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(Jill in the blanks)
Permanent Pool Elevation
Sediment Removal EX
-------- - - - - -- Pe !!en Pool
Volume - - - - -- Sediment Removal Elevation Volume
Bottom Elevatio !Tin.
--------------------------- - - - - -- - - - - --
Sediment Bottom Elevation 1 -ft n
Storage Se imer
Storage
FOREBAY MAIN POND
Form SW401 -Wet Detention Basin O&M -Rev.4 Page 3 of 4

4 ; 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: W i xi '_A c iJ R', Q i
BMP drainage area number: U b
Note: The legally responsible party should not be a homeowners association unless more than 500A of
the lots have been sold and a resident of the subdivision has been named the president.
I, C)rt)p r _a �. �fi'Y1�5 , a Notary Public for the State of
NUT4\ eQ TD � n Gt ,, County of 0&( P , do hereby certify that
(1L1,O �.lt'1 n 5 personally appeared before me this
day of , o JS and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
JON
O
a� 1G
N °�OCV Go qty
ol- Q
Vr r
''4i���RTH C�r�O``\``�
mnnn
SEAL
My commission expire s al'H't
Form SWU401 -Level Spreader, Filter Strip, Restored Riparian Buffer O &M -Rev.3 Page 3 of 3

Permit No.
(ro be provldad by DWQ)
48 11
A.—C—A
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be Bfled out printed and submitted.
The Required Items Cbea t (Part Ito must be printed, Od out and submitted along wfl6 all of the required brformadol.
I. PROJECT INFORMATION-
Project name Winston Pointe
Contact person Mice Stewart
Phone number
Date
Drainage area number
II. DESIGN INFORMATION
Site CharaclerkNks
Drafte area
Impervious area, post - development
% impervious
Design minfall depth
Storage Volume: Non-SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.50 runoff volume
Pre- development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr nrreff
Minimum volume required
Volume provkled
Peak Flaw Calculations
Is the pre/post control of the tyr 24hr storm peak flow required?
1-yr, 24-hr randall depth
Rational C, Pre - development
Rational C, post-development
Rainfall kltensky:l -yr, 24-hr storm
Pre- development 1 -yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
PmPost 1-yr, 24-hr peak flow control
Elevations
Temporary pool elevation
Permanent pool elevation
SHWT elevation (approx at the penm. pool elevation)
Top of 10ft vegetated shelf elevation
Bottom of 10ft vegetated shelf elevation
Sediment deanout top elevation (bottom of pored)
Sediment deanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state-required temp. pool?
Elevation of the top of the additional volume
945,252 flz
661,700 fe
70.00%
1.0 in
52,383 f?
54,093 fl3
ft
fl
fe
#VALUEI fe
Y (Y or N)
O�O� W A T�c9OG
ti
O '<
Do NOT fill out BOTH Non-SR and SR date.
OK, volume provided Is equal to or In excess of volume required.
Do NOT fill out BOTH Non-SA and SA date.
#VALUEI
1.0 in
0.20 (unitiess)
0.70 (unMess)
1.00In1hr OK
3.33 felsec
24.23 fe/sec
20.90 fe/sec
301.00 6msl
296.00 final
296.00 fmsl
297.00 67W
296.00 final
292.00 fimel
291.00 fins)
1.00 It
Y (Y or N)
301.0 W OK
Forth SW401 -Wet Detention Bash-Rev.94H8112 Pals I a II. DeWpn Simmary, Page 1 or 2

Permit No.
(ro be pr *bd byDWQ)
Area, temporary pod
37,549 ft
Area REQUIRED, permanent pool
47,2831Y
SAIDA ratio
5.00 (unilless)
Area PROVIDED, permanent pool, Ao„jw
47,359 ft< OK
Area, bottom of 10ft vegetated shelf, Aw_da
17,59911`
Area, sediment dearaut, top elevation (bottom of pond), Aw_,,,,d
13,521 ft'
Volumes
5g093 ft
Volume, temporary pool
111,298 ft'
Volume, permarrert pool, Vo,,,P„ r
54,093 f t
Volume, forebay (sum of forebays If more than one forebay)
10,818 fe
Forebey % of permanent pool volume
20.0%% OK
SAIDA Table Data
Design TSS removal
90%
Coastal SAIDA Table Used?
n (Y or N)
Mountain/Piedmont SAIDA Table Used?
y (Y or N)
SAIDA ratio
5.00 (unttiess)
Average depth (used in SAIDA table):
2.50 It
Calculation option 1 used? (See Figure 10-2b)
N (Y or N)
Volume, permanent pool, Vouw
5g093 ft
Area provided, peonanent per, A,,.p m
47,359 fe
Average depth calgdated
5.00 It OK
Average depth used In SAIDA, del (Round to nearest 0.511)
5.0 It OK
Calculation option 2 used? (See Figure 10-2b)
N — (Y o N)
Area provided, permanent pool, Aw,,�
47,359
Area, bottom of 1011 vegetated shelf, A
17,59911`
Area, sediment deanout, top elevation (bottom of pond), Aw„d 13,521 fta
•Depth• (distance blw bottom of 1011 shelf and top of sediment) 4.00 it
Average depth calculated 5.00 It
Average depth used M SAIDA, ds„ (Round to down to nearest 0.511) 5.0 it
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice (If dreu!84
Area of orifice (If- non- ciradar)
C Mciert of discharge (Cc)
Driving head (Hj
Drawdown through weir?
WeIr type
Co~ of discharge (C„)
Length of weir (L)
Driving head (H)
Pre - development 1-yr, 24-hr peak Now
Post-development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or weir)
Storage volume drawdown fine
Additional Information
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to wkflh ratio
Length to welch ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated filter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate bufidout?
Drain mechanism for maintenance or emergencies Is:
Y
(Y or N)
OK
2.00 In
10 :1
if?
(unilless)
OK
2.50 It
N
(Y or N)
(unfliess)
3
(unitiess)
29
ft
2.5
it
OK
3.33 felsec
(Y or N)
24.23 ft /sec
Y
3.20 f?/sec
3.00 days
OK
OK
OK, draws down In 2.5 days.
#VALUEI
Form SW401-Wet Deteotror, Bash- Rev.94118M Pinks r. & n. Design Simmeiy, Peas 2 or 2
3 :1
OK
10 :1
OK
10.0 it
OK
Ti
OK
5.0 :1
OK
Y
(Y or N)
OK
1.0 it
OK
N
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
PUMP OUT
Form SW401-Wet Deteotror, Bash- Rev.94118M Pinks r. & n. Design Simmeiy, Peas 2 or 2

s, " f
III. REQUIRED ITEMS CHECKLIST - •
Permit No
(to be provded by DINO)
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.
Pagel Plan
Initials
Sheet No.
' r r
2 +
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build-0ut,
- Off-she drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROME,
- Overflow device, and
- Boundaries of drainage easement
k 1
) O
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross - section,
- Vegetation specification for planting shelf, and
- Filter strip.
a
3. Section view of the wet detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, dean out of the basin is specified
on the plans prior to use as a wet detention basin.
3kT
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
��►
/
6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
1 +►T
7. The supporting calculations.
5T
8. A copy of the signed and notarized operation and maintenance (O&M) agreement
j A
*1
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiWon test. County
soil maps are not an acceptable source of soils information.
Form SW401 -Wet Deterttion Basin- Rev.9- 4/18/12 Part III. Required Items Cheddst, Page 1 of 1

f = �
ATA
HWEHR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER • VEGETATED FILTER STRIP (LS-VFS) SUPPLEMENT
This form must be completely tilled out printed, initialed, and submitted.
Project name
Contact name
Phone number
Date
Drainage area number
The purpose of the LS-VFS
Stomrwater eaters LS-VFS from
Type of VFS
Explanation of any 'Other" responses above
If Stormwater Enters the LS-VFS from the Drainage Area
Drainage area
Impervious surface area
Peroent Impervious
Rational C coefficient
Peak flow from the 1 In/hr storm
Time of concentration
Rainfall Intensity, 10-yr storm
Peak flow from the 10-yr stone
Design storm
Maximum amount of flow directed to the LS-VFS
Is a flow bypass system going to be used?
Explanation of any 'OW responses above
N Stomrwater Enters the LS-VFS from a BMP
Type of BMP
Peak discharge from the BMP during the design scam
Peak discharge from the BMP during the 1011 stone
Maximum capacity of a 100-foot kung LS-VFS
Peak flow directed to the LS-VFS
Is a flow bypass system going to be used?
Explanation of any 'Other' responses above
Winston Ponite
Mike Stewart
[phone]
May 6, 2013
1
Buffer Rua: Diffuse Flow
The drainage area
Engineered filter strip (graded & Sodded, slope < 8%)
65,340 f?
9,200
fe
14.08
%
0.50
0.75
Cis
5.00
min
7.2
In/hr
5.40 cis
101ear stone
5.4 cis
n (Y or N)
Do not complete this section of the form.
Pick one:
cis
ds Do not complete this section of the form.
10 cis
cs Do not complete this section of the form.
(Y or I4)
of warEA
o �
Form SW401- LS-VFS - 2eJun82012 - Rev.10 page 1 of 3

• l,$- VFSFDealgn
Forebay surface area
200
sq ft Forebay is adequately sized
Depth of forebay, at sbwwater entry point
24
In
Depth of forebay at stornomater exit point
12
In Depth is appmpnate
Feet of level tip needed per cis
10
ft/ds
Computed minimum length of the level tip needed
54
ft
Length of level lip provided
71
it
Width of VFS
50
ft
Elevation at downslope base of level lip
285.50
fmsl
Elevation at the end of the VFS that is farthest from the LS
283.00
fmsl
Slope (from level lip to the end of the VFS)
5.00
%
Are any draws present in the VFS?
n
(Y or N) OK
Is there a collector Swale at the end of the VFS?
n
(Y or N)
Bypass System Design ((f applicable)
Is a bypass system provided?
Is there an engineered flow splitting device?
Dimensions of the channel (see diagram below):
M
W
y (flow depth for 10-year skim)
freeboard (during the 10 -year stone)
Peak velocity in the channel during the 10-yr storm
Channel lining material
Does the bypass discharge through a welland`t
Does the channel enter the stream at an angle?
Explanation of any'Olher• responses above
(Y or N)
(Y or N)
it
it
it
it
It
ftlsec
Pick one:
w
(Y or N)
(Y or N)
L B i
Forth SW401 - LS-VFS - Mune2012 - Rev. 10 page 2 of 3

QUIRED REMS CHECKLIST
EDIT Please indicate the page or plan sheet numbers where the supporting documentation can be found. M incomplete submittal package VIII
result in a request for additional Information. This will delay final review and approval of time proJecL 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. K a requirement has not been
met, each Justification.
Requded Item:
1. Plans (1' - MY or larger) of the entire site showing:
- Design at ultimate bufld-out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coeff dent per basin),
- Forebay (If applicable),
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW), and
- Boundaries of drainage easement
2. Plan details (1' = W or larger) for the level spreader showing:
- Forebey (if applicable),
- High flow bypass system,
- One foot topo lines between the level Up and top of stream bank,
- Proposed drainage easement, and
- Design at ultimate build -out
Section view of the level spreader (1' = 20' or larger) showing:
- Underdrain system (ff appl aable),
- Level Up,
- 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 stabMzBd.
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 mahrtenanoe (08M agreement,
Initials Page or plan shad number and any notes:
VX I See- 4CHEE7
1
J kt
sEE st+FET 8
aE sHKK19
ow
Forth SW401- LS-VFS - Mune2012 - Rev.10 page 3 d 3

Permit Number:
(lo be provided by DWo
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 BNT 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 times 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 lime will be added if necessary.
After the filter strip is established, it will be inspected quarterly and within 24 hours
after every storm event greater than 1.0 inch (or 1.5 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.
BMW element:
Potential problenu.
How I will remediate the problem:
The entire filter strip
Trash/ debris is present.
Remove the trash/ debris.
stem
The flow splitter device
The flow sputter device is
Unclog the conveyance and dispose
(if applicable)
clogged.
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

k �0 9
BMP element:
Potential problem:
How 1 will remediate 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
end of the level spreader that
shows stormwater has
Regrade the soil to create a berm
that is higher than the level lip, and
then plant a ground cover and
bypassed it
water until it is established. Provide
lime and a one -time fertilizer
application.
Trees or shrubs have begun
Remove them.
to grow on the swale or just
downslope of the level lip.
The bypass channel
Areas of bare soil and /or
erosive gullies have formed.
Regrade the soil if necessary to
remove the gully, and then
reestablish proper erosion control.
Turf reinforcement is
Study the site to see if a larger
damaged or ripap is rolling
downhill.
bypass channel is needed (enlarge if
necessary). After this, reestablish
the erosion control material.
The filter strip
Grass is too short or too long
if applicable).
Maintain grass at a height of
a roximatel 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 -time fertilizer application.
Sediment is building up on
Remove the sediment and
the filter strip.
restabilize the soil with vegetation if
necessary. Provide lime 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
choking out desirable species.
Remove vegetation by hand if
possible. If pesticide is used, do not
allow it to get into the receiving
water.
The receiving water
Erosion or other signs of
damage have occurred at the
outlet.
Contact the NC Division of Water
Quality local Regional Office, or the
401 Oversight Unit at 919- 733 -1786
Form SWU401 -Level Spreader, Filter Strip, Restored Riparian Buffer O&M -Rev.3 page 2 of 3

I # +A