20080867 Ver 1_More Info Received_20080725

DANIEL J. BLILEY
SOIL AND LAND USE CONSULTANT
614 SOUTH SECOND STREET SMITHFIELD, NORTH CAROLINA 27577 [phone]
July 25, 2008 ID S - v e L01
Mrs. Cyndi Karoly
Supervisor 401 Permitting Unit
NCDENR. Division of Water Quality
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Mrs. Karoly:
Attached with this letter are five copies of the information that was requested for Millstone Ridge
Subdivision in the letter dated June 26, 2008. A copy of that letter is also attached.
Also attached is the mitigation plan that was submitted to the Army Corps of Engineers.
Please contact me if you need additional information.
Sincerely
aLicensed Soil Scientist
cc: Crossroads Development Co.
Development Consulting Services
JUL 2 15 2008
DENR - VATER QUAi:IY
WETLANDS AND STORUN'ATEk R to ;i'
SOIL MAPPING - SITE INVESTIGATION - LAND RESOURCE DATA EVALUATION
Licensed Soil Scientist
O
H/F9
1G
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
June 26, 2008
DWQ Project # 08-0867
Johnston County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Michael Coates and David Coates ==' - 9
Crossroads Development Co.
12400 NC Highway 50 North JU?_ 2 2008
Willow Spring, NC 27607 DENR .i'ATER 00AUTY
WETLANDS AND STURMONTER *VAN'"i
Subject Property: Millstone Ridge Subdivision - AFTER-THE-FACT
Ut Hooks Branch - Black Creek [030404, 27-45-4, C, NSW]
REQUEST FOR MORE INFORMATION
Gentlemen:
On May 22, 2008, the Division of Water Quality (DWQ) received your After-The-Fact
application dated May 20, 2008, to fill or otherwise impact 0.222 acres of 404/wetland, 107
linear feet of perennial stream impact and 5,750 square feet of Zone 1 Neuse River basin
protected riparian buffer, and 2,446 square feet of Zone 2 Neuse River basin protected riparian
buffer to construct the residential development at the site. The DWQ has determined that your
application was incomplete and/or provided inaccurate information as discussed below. The
DWQ will require additional information in order to process your application to impact protected
wetlands and/or streams on the subject property. Therefore, unless we receive five copies of the
additional information requested below, we will place this project on hold as incomplete until we
receive this additional information. If we do not receive the requested information, your project
will be formally retumed as incomplete. Please provide the following information so that we
may continue to review your project.
Additional Information Requested:
1. Per the requirements of the Neuse Riparian Buffer Rule, diffuse flow must be achieved at
every stormwater discharge point on this property. The requirements for diffuse flow are
explained in Chapter 8 of the BMP Manual. Please submit a site plan that shows every
stormwater discharge point on the property and the corresponding diffuse flow measure
that will be used.
2. For each proposed level spreader, please provide a Level Spreader Supplement Form
with ALL required items attached. If any of the stormwater discharge points are located
such that the filter strip (from the proposed level spreader lip to the top of bank of the
receiving stream) exceeds the allowable slope (6-8 percent), then you must provide a
401 Oversight/Express Review Permitting Unit vtlll?f?
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] / FAX [phone] / Internet: httn://h2o.enr.state.ne.us/ncwetlands
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/ 10% Post Consumer Paper
Nancy S. Stancil
a Nory Pubiic in the
Step of North Carolina . C w* of _ Johnston
do hwOby OwW VW Michael R. Coates oemndy aPpeww
before me this the 24th day of July . 20_08, MW =WoNbdp
the due mom" of the bmgOkV insfivme L W&MM my hand and of sl
trootk/
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OTAp,
My CMMnbadn MOM 7-4-2004
FO.DRPG•5 Rev.l Pap 1 of 1 '?•,;,?OAr Grp
Crossroads Development Co.
Page 2 of 2
June 26, 2008
BMP that removes 85 percent of TSS and 30 percent of TN and TP instead of the level
spreader. For each proposed BMP, please provide the appropriate BMP Supplement
Form with ALL required items attached, or alternatively provide evidence that Johnston
County has approved an appropriate BMP design in that location (see Item 3).
The BMP Manual and BMP Supplement Forms are available on the DWQ web site at:
http://h2o.enr.state.nc.us/su/bmp forms.htm.
3. Please provide documentation of the Johnston County's approval of the stormwater
management plan for this project by providing EITHER:
• A valid approval letter from the Johnston County indicating that the proposed activity
has an approved SMP and one copy of the approved SMP, including plan details,
calculations and other supporting information, OR
• A set of stormwater plan details and calculations stamped as "Approved" by Johnston
County.
Please submit this information within 30 calendar days of the date of this letter. If we do not
receive this requested information within 30 calendar days of the date of this letter, your project
will be withdrawn and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands,
waters or protected buffers. Please be aware that any impacts requested within your application
are not authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian
McMillan at 919-733-1786 if you have any questions regarding or would like to set up a meeting
to discuss this matter.
yndi Karoly, Supervisor
31 Oversight/Express Review Permitting Unit
CBK/ym
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Daniel Bliley, Daniel J. Bliley, Soil & Land Use Consultant, Inc., 614 South Second Street,
Smithfield, NC 27577
Filename: 080867MIWtoneRldgeSD(Johnston)On Hold

DEPARTMENT OF PUBLIC UTILITIES
POST OFFICE BOX 2263
SMITHFIELD, N.C. 27577
[phone]
May 9, 2008
Mr. Michael Coates
Crossroads Development Corporation
12400 NC Hwy 50 North
Willow Springs, NC 27592
Re: Millstone Ridge Phase II
Stormwater Management Statement and Plan
Dear Mr. Coates:
We have reviewed the revised information submitted for the stormwater management plan and
calculations for the proposed Millstone Ridge Subdivision Phase II. Based upon the information
submitted, the stormwater management plan has been approved with the following stipulations:
1. NCDOT must approve the proposed stormwater discharge into their right-of-way.
2. Please be advised that the culverts and storm sewer system located within the proposed
future public Right of Way lim"not been reviewed. It is the developer's and design
professional's responsibility that the system is designed adequately.
3. Please provide a copy of the recorded restrictive covenants and a note on the Final Plat
limiting the impervious area on each of the 43 lots to 6,830 square feet.
4. Please provide an approval letter from NCDENR Land Quality for the approved
sedimentation and erosion control plan.
5. Please provide a copy of the recorded restrictive covenants noting who will be
responsible for maintenance of all drainage facilities located outside of the proposed
NCDOT right of way.
6. Prior to recordation of the Final Plat, please provide a stormwater certification stating that
all stormwater facilities were constructed in accordance with the approved stormwater
management plan.
7. Please indicate all drainage easements, riparian buffers, jurisdictional wetlands, and flood
hazard areas on the Final Plat.
Please be reminded that no land disturbing activities may begin on this site until all other
necessary approvals are obtained. A copy of this letter will be forwarded to the Planning
Office for their files. If you have any questions or need additional information, please contact me
at [phone] or by email [e-mail].
Sincerely,
4----
1*z?
Jamie Guerrero, El
Stormwater Administrator
cc: Chandra C. Coats, PE - Utilities and Environmental Engineer
Berry Gray - Planner
Keith Roberts, PE - Development Consulting Services, Inc.
Printed on recycled paper +i?1t
. A" V
DEPARTMENT OF PUBLIC UTILITIES
POST OFFICE BOX 2263
SMITHFIELD, N.C. 27577
[phone]
October 5, 2007
Mr. Michael Coates
Crossroads Development Corporation
12400 NC Hwy 50 North
Willow Springs, NC 27592
Re: Millstone Ridge Phase 1
Stormwater Management Statement and Plan
Dear Mr. Coates:
We have reviewed the revised information submitted for the stormwater management plan and
calculations for the proposed Millstone Ridge Subdivision Phase I. Based upon the information
submitted, the stormwater management plan has been approved with the following stipulations:
1. NCDOT must approve the proposed stormwater discharge into their right-of-way.
2. Please be advised that the storm sewer system located within the proposed future public
Right of Way has not been reviewed. It is the d'eveloper's and design professional's
responsibility that the system is designed adequately.
3. Please provide a copy of the recorded restrictive covenants and `a note on the Final Plat
limiting the impervious area on each of the 46 lots to 3,162 square feet.
4. Please provide an approval letter from NCDENR Land Quality for the approved
sedimentation and erosion control plan.
5. Please provide a copy of the recorded restrictive covenants noting who will be
responsible for maintenance of all drainage facilities located outside of the proposed
NCDOT right of way,
6. Prior to recordation of the Final Plat, please provide. a storm 'water certification stating that
all stormwater facilities were constructed in accordance with the approved stormwater
management plan.
7. Please indicate all drainage easements, riparian buffers, jurisdictional wetlands, and flood
hazard areas on the Final Plat.
Please be reminded that no land disturbing activities may begin on this site until all other
necessary approvals are obtained. A copy of this letter will be forwarded to the Planning
Office for their files. If you have any questions or need additional information, please contact me
at [phone] or by email at chandra.coats@johnstonnc,com.
Sincerely,
C,J.11\, .
Chandra C. Coats, PE
Utilities and Environmental Engineer
cc: Berry Gray, Planner
Keith Roberts, PE
Printed on recycled paper CS
DANIEL J. BLILEY SOIL AND LAND USE CONSULTANT
614 SOUTH SECOND STREET SMITHFIELD, NORTH CAROLINA 27577 [phone]
June 22, 2008
Mr. Thomas Brown
Regulatory Specialist
US Army Corps of Engineers
3331 Heritage Trade Drive
Suite 105
Wake Forest, North Carolina 27587
Thomas:
Attached with this letter is a copy of the site map for section II of Millstone Ridge Subdivision located
north of NC 210 in western Johnston County.
Highlighted in blue is the area that the client (Crossroads Development Co.) has agreed to place in a
permanent conservation easement for mitigation of the wetlands and stream impacts made for the
construction of the roads , streets and storm water structures. The area encompasses a small un-
buffered drain and associated wetlands and also includes some upland areas. The upland areas will
provide some additional buffer for the drainage feature.
The easement will be held by the Millstone Ridge Homeowners Association and the specific conditions
and restrictions for the easement will be outlined in the restrictive covenants for the subdivision.
The total area is approximately 5.08 acres, which is 2.88 acres in excess of, what is normally
required for a 10:1 mitigation. Will it be possible for the developer to use this excess area mitigation for
future wetlands and stream impacts (if they are incurred)?
Please call me if you have any questions regarding this proposal or if you need additional
information.
Sincerely
Daniel J. Bf y
Licensed Soil Scientist
SOIL
F 7050 „ r" !
OANOM? _
SOIL vIAPPING - .S1TF, INVESTIGA?+ I9 4cK*D RESOURCE DATA EVALUATION
Licensed Soil Scientist
1. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should be
described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): uplands stream wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of draw-
down valve or spillway, etc.):
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.):
Current land use in the vicinity of the pond:
Size of watershed draining to pond: Expected pond surface area:
L Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts. Subdivision was designed to
minimize impacts to wetlands and streams. Streets are located along well drain interstream
divides Individual building lots are designed to be located in or have substantial areas located in
well drained areas to allow for the house placement, for septic system drainfield installations and
for the location of any accessory features. Impacts to wetlands and streams were planned only
where absolutely necessary for practical development of the property The majority of wetlands
and stream areas are included in non-impact areas (open Space) within the subdivision.
L Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC Division
of Water Quality for projects involving greater than or equal to one acre of impacts to freshwater
wetlands or greater than or equal to 150 linear feet of total impacts to perennial streams.
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on January 15, 2002, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors including
size and type of proposed impact and function and relative value of the impacted aquatic resource
will be considered in determining acceptability of appropriate and practicable mitigation as
proposed. Examples of mitigation that may be appropriate and practicable include, but are not
limited to: reducing the size of the project; establishing and maintaining wetland and/or upland
vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource
Page 11 of 11
functions and values by creating, restoring, enhancing, or preserving similar functions and values,
preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCEEP concurrence shall be placed on hold as incomplete.
An applicant may also choose to review the current guidelines for stream restoration in DWQ's
Draft Technical Guide for Stream Work in North Carolina, available at
1. Provide a brief description of the proposed mitigation plan. The description should provide as
much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
Developer proposes to place and area of wetlands and adjoining uplands on the property into
a permanent conservation easement The easement will be held and maintained by the
Millstone Ridge Homeowners association. The conditions of easement will be specified in the
restrictive covenants for the subdivision The area to be preserved is approximately 5.08 acres
and is highlighted in blue on the attached site plan map Preservation of this area will provide
additional protection to the un-buffered drainage feature that dissects the area and will
contribute to enhanced water duality along; the main buffered stream.
1. Mitigation may also be made by payment into the North Carolina Ecosystem Enhancement
Program (NCEEP). Please note it is the applicant's responsibility to contact the NCEEP at
[phone] to determine availability, and written approval. from the NCEEP indicating
that they are will to accept payment for the mitigation must be attached to this form. For
additional information regarding the application process for the NCEEP, check the NCEEP
If use of the NCEEP is proposed, please
check the appropriate box on page three and provide the following information:
Amount of stream mitigation requested (linear feet):
Amount of buffer mitigation requested (square feet):
Amount of Riparian wetland mitigation requested (acres):
Amount of Non-riparian wetland mitigation requested (acres):
Amount of Coastal wetland mitigation requested (acres):
L Environmental Documentation (required by DWQ)
1. Does the project involve an expenditure of public (federal/state/local) funds or the use of
public (federaUstate) land? Yes No
Page 12 of 12
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LEVEL SPREADER AND SCOUR HOLE CALCULATIONS
MILLSTONE RIDGE - PHASE 2
JOHNSTON COUNTY, NORTH CAROLINA
SUBMITTED BY: DEVELOPMENT CONSULTING SERVICES, INC.
1401 AVERSBORO ROAD, SUITE 206
GARNER, NC 27529
[phone]

023728
M.
ATA
HMNR
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STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be !died out • ed and submitted.
Contact name
Phone number
Date
Drainage area number
For Level Spreaders Receiving Flat From a BLIP
Type of BHP
Drawdown flow from the BMP cfs
For Level Spreaders Receiving: Flow from the Drainage Area
Drainage area 13,662 fe
Impervious surface area 5236' . fe
Percent Impervious 0.33
Rational C coeffiaent ...0.55
Peak flow from the 1 iNlu storm 0.196005051 cis
Time of concentration min
Rainfall intensity, 10-yr storm 7.22 In/hr
Peak Clow from the 10-yr storm 1.428596465 cfs
Where Does the Level Spreader Discharge ?
To a blorelerNion ceU? N • (Y or N)
To a wetland? N . (Y or N)
To a filter strip or riparian buf<e ? 'Y (Y or N) Please complete filler ship characterization below.
Other (Spa*
Filter Strip or R4mrhm Buffer Charaderizotfon (If apple able)
Width of grass 0 . It
Width of dense ground cover 50 It
Width of wooded vegetation 0 fl
Total width 50 ft
Slope (from level lyr to to top of bank) 7.5 %
Are any draws present? N .. (Y or N) OK
Level Spreader Design
Forsbay surface arm 10 sq ft OK
Feet of level Ip needed per cis 13 Rk h
Answer "r to one of the fallowing:
Leng?r based on the 1 b*r storm? N (Y or N)
Length based on the 10•yr, 24-hr storm? Y (Y or N)
Length based on the BI AP dis hvp rail? N (Y or N)
Design lbw 1.43 Cis
Is a bypass device provided? N (Y or N) A bypass device is not needed.
Form SM01-LSVat Spn WW, Flsr Sb*. Rsgemd ROstim SONAMI Pats I. and 11. 008W SWO". pores 1 of 2
[phone]: .
Lsvel Spnreder?l
teno of the level lip .19 - tl Level spreader length OK.
Are level spreaders in series? N (Y or N)
Bypass Channel Design (If q* )
Does the bypass discharge through a wetland? (Y or N) Do not complete this section of the worksheet.
Does the channel enter the stream at an angle? Do not complete this section of the workshy.
Dimensions of the channel (see dlagram below): Do not complete this section of the worksheet
M I Do not complete this sedan of the worksheet.
B it Do not complete this section of the worksheet
W tl Do not complete this section of the wrksheet.
Y ft Do not complete this section of the worksheet.
Peak velocity in the charmet during the 10-yr, 24-hr storm cfs Do not comply this section of the worksheet
Channel lining material Do not complete this section of the worksheet.
i B
Form SW401-loud Spreader, FRw SO*, Restored Reran BuMerRev,2 Parts 1. and It. D@WW Summary, paps 2 of 2
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 wM delay final revioN and approval of the project Initial in the space provided to
indicate the Mowing 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 justiflc ation.
Page/ Plan
InitiSheet No.
1. Plans (t' - 50' or larger) of the entire site showing:
- Design at ultimate build-out
Off-Site drainage (if ap e),
- Delineated drainage basins (include Rational C coefficient per basin),
- Forebey fd applic;able),
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
2. Plan details (1' = 30' or larger) for the level spreader showing:
- Forebey (if applicable),
- High flow bypass system,
- One foot topo lines between the level Ipr and top of stream bank,
- Recorded drainage easement, and
- Design at ultimate build-out
3. Section view of the level spreader (V = 20' or larger) showing:
- Underdram system (If applicable),
- Level lip,
- Upelope channel, and
- Downslope filter fabric.
4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
5. An assurance that the installed system will meet design speftedions upon initial operation once the
project is complete and the entire drainage area is stabilized.
& A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
7. The supporting calculations.
8. A copy of the signed and notarized inspection and maintenance (W) agreement
9. A copy of the deed restriction.
Form SW4M-Lave[ Spreader, Fftw Strip, Restored Rrparren &OW-Rev2 Part rrr pop 1 of 1
Level Spreader #1
A 17M
A
HCDENR

STORMWATF.R MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This bm must be f18ed out. xkted and sta5f Od
For Level Spreaders Recelving Flow From a BW
Type of BMP
Drawdown flow from the BMP cis
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area 54850
Impervious surface area 15,000 fe
Percent Impervious 0.28
Rallonal C coef8dent OAS
Peak flow from the 1 h1hr storm 0.5625 cis
Time of concenhalion min
Rainfall intensity, 1D-yr storm . 722 iMu
Peak flow from the 10•yr storm 4.06125 cis
Whom Does the Level Spreader Dioc mp?
To a bloretendon cell? N : ' . (Y or N)
To a wetland? 'N (Y or N)
To a filter strip or riparian bulfel? Y: (Y or N) Please complete filter strip characterization below.
Other (specify)
Filter Strip or Riparian Buffer Characlerizallon (if applicable)
Width of grass 0 ft
Width of dense ground cover 50 ft
Width of wooded vegetation 0 - fl
Total width 50 ft
Slope (from level lip to to top of bank) 6.6 %
Are any draws present? N • (Y or N) OK
Level Spreader Design
Forebay surface area 30 sq ft OK
Feet of level 6p needed per de 13 tilcfs
Answer'Y' to one of the blowing:
Length based an the i hvbr storm? N . (Y or N)
Length based an the 10-yr, 24-hr storm? Y • (Y or N)
Length based on the BMP discharge rate? N (Y or N)
Design flow 400 ' de
Is a bypass device provided? N (Y or N) A bypass device is not needed.

Form SMM-Level Spreader, Fehr Strip. Raalored Romian Buffer Rav.2 Parts 1. and 11. Deslen Summary, page 1 of 2
Length of the level hp
Are level spreaders in series?
Bypass Channel Desi®n (if alb)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr, 24-hr storm
Channel lining malleriat
53 ft Level spreader length OK
N (Y or N)
(Y or N) Do not complete this section of the worksheet.
Do not cw0ft this section of the worksheeL
Do not complete this section of the worksheet.
it
Do not complete this section of the worksheet.
ft Do not complete alts section of the worksheet.
fl Do not complete this section of the worksheet.
it Do not complete this section of the worksheet
ft Do not complete this section of the worksheet.
Do not complete this section of the worksheet.

? W t
y
- - ----------
M Bit
Form SW401-Level 8pnMw, frtr MV, Rsabrod Ripen. Baffar6Rav.2 Part L and II. Design Summery, papa 2 of 2
Please indicate the page or plan sheet numbers where the supporft docwnentMon 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 N the applicant has designated an agent, the agent may Initial below. If a
requirement has not been me, attach justification.

<54-
Pagel plan
Sheet No.
1. Plans (1' - 59 or larger) of the entire site showing:
- Design at ultimate build-out,
- Off-site drainage (1f applicable),
Delineated drainage basins (include Rational C coefficient per basin),
- Forebay (if applicable),
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW), and
- Boundaries of drainage easement

2. Plan details (1" = 3V or larger) for the level spreader showing:
- Forebay (if applicable),
- High lbw bypass system,
- One loot topo lines between the level lip and top of stream bank,
- Recorded drainage easement, and
- Design at ultimate buiW-W.
3. Section view of the level spreader (1" = Z Y or larger) showing:
- Underdrain system (if applicable),
- Level Ilp,
- Upslope channel, and
- Dawrialope filter fabric.
4. A dete-stamped photograph of the fiker strip that clearty shows the type of vegetation that is present.
5. An assurance that the installed system will meet design specifications upon Initial operation once the
project is complete and the entire drainage area is stabilized.
6. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
7. The supporting calculations.
8. A copy of the signed and notarized inspection and maintenance (M) agreement.
9. A copy of the deed restriction.
Form SW401-Level Spreader, Filter Strip, Reatored Riparian Suffer6Revl Part 111, page 1 of 1
Level Spreader #2
ATA
NCDENR
Ll
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be NNed out, ' ed and submNed.
Project name
CmW name
Phone number
Date
Drainage area number
For Level Spreaders Receiving Flow From a BMP
Type of SW
Drawdown flow from the 8MP
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent Impervious
Rational C coefficient
Peek Now from the 1 h Sir dorm
Time of concentration
Rakft Intensity, 10 0-yr storm
Peak flown from the 10-yr storm
Where Dom the Level Spreader mcharge ?
To a bioretenlion oell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Fiber Ship or Riparian Buffer Charecterhadon (if appkabk)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Slope (from level tip to to fop al bark)
Are any draws preserV
Level Spreader Design
Forebay surface area
Feet of level 10 needed per cis
Answer'Y' loons of the following:
Length based on the 1 Inihr storm?
Length based on the 10•yr, 244r stomp?
Length based an the BMIP discharge rats?
Design flow
Is a bypass device provided?

(819) 3290051
Led Spreader #3 . ,
cis
11,326 . ft
4,530 flz
0.40
0.66
0.143005051 ds
min
7M Mr
1.032486465 cis
N (Y or N)
N (Y or N)
Y ? (Y or N) Please complete filter skip characterization below.
0 it
60. It
0 A
50 It
.7 %
N (Y or N) OK
10 sq ti OK
13 ftkds
N (Y ar N)
Y (Y or N)
N _ (Y or N)
1.03 A
N. (Y or N) A bypass device is not needed.
Font SW401-Leven Sp "dw, FIMr 04RubW ROWWn BhiffinRav,Z Pals I. and II. D*Wr Sun'MmY, POP 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (If applicable)
Does the bypass discharge Yrrough a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
w
y
Peak velocity in the channel during the 10-yr, 24-hr slorm
Channel lining material
14 ft Level Weeder length OK
.N (Y or N)
(Y or N) Do not complete this section of the worksheet.
Do not cornple le this section of the worksheet.
Do not complete this section of the worksheeL
ft Do not oomplete this sedan of the worksheel.
ft Do not complete this section of the worksheet
ft Do not complete this section of the worksheet.
fl Do not complete this section df the worksheet.
cis Do not CWrhplete this section d the wortsheet.
Do not complete this section of the wrptcsheet.
Fan SW4014Avel Swoodw, FMw fto, Raabwd Riparian 8urraaRav2 Parts L and IL Oasipn Summary, papa 2 of 2
Please indicae 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. Ind 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
Initi Sheet No.

1. Plans (t" - 50' or larger) of the entire site showing:
- Design at ultimate burnt-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (nclude Rational C ooefficient per basin),
- Forebay (If applicable),
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW), and
- Boundaries of drainage easement.
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.
- Recorded drainage easement, and
• Design at ultimate build-out
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system Of applicable),
- Level lip,
- Upslope channel, and
- Downskipe filter fabric.
lzz?

4. A date-stamped phoiograptn of the filter strip that dearly shows the type of vegetation that is present.
5. An assurance that the installed system will moat design specifications upon Initial operation once the
project Is complete and the entire drainage area is stabilized.
6. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
7. The supporting calculations,
8. A copy of the signed and notarLed inspection and maintenance (10) agreement.
9. A copy of the deed restriction.
Form SW4014.evil Spreader, Fiber Ship, Reakwed Riparian Bu004Rev.2 Part III, pap 1 of 1
Level Spreader #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 BW This maintenance record will be kept in a
log in a known set location. Any deficient BWW 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 BW
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
(comnmoray 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 t0 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 effkw cy. Turf grass should not be cut shorter than 3 to 5 inches and
may be alld'wed to grow at tali as 12 inches depending on aesthetic requirements
(NIM 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 qua terly 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.
BMP element; PotenEial blew: How I wM remediate the problem:
The efthe filter strip Trash/debris is present. Remove the trash/debris.
The flow splitter device
(if applicable) The flow splatter device is

- Unclog the conveyaixe and dispose
of sediment off-site.
The flaw splitbe; device is

damaged.
?
l Make any necessary repairs or

replace if damage is too large for
repair.
Form SWU401-Level Spreader, Fitter Strip, Restored Riparian Buffer O&M Rev.3 Page 1 of 3
BW element: Potential blemr: How I will remediate the blew:
The Swale and the level Tice Swale is clogged with Remove the sediment and dispose
lip sediment. of it off site.
The level lip is cracked, Repair or replace lip.
settbed, 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 sbormwater has then plant a ground cover and
bypassed 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
downslo 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 neinforeement is Study the site to see if a larger
damaged or ripap is rolling bypass channel a needed (enlarge if
downb ill necessary). Alter this, reestablish
the erosion cm trot material.
The filter strip Grass is too short or too long Maintain grass at a height of
if appficWMej a beI three to six inches.
Areas of bare soul 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 a liCaidorr.
Sediment is building up on Remove the sediment and
the filter strip. rest abilize the sort 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: soil;, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer a liration.
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 Overs*ht Unit at 919-733-2786.
Form SWU40I-Level Spreader, Filter Strip, Restored Riparian Bum O&M Rev .3 Page 2 o 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•Millstone Ridgy Phase 2
BMP drainage area number: l 2 3
Print name•Crossroads DeveloLw t Corporation
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, Nancy S. Staacil , aNotary Public for the State of
North Carolina , County of Johnston , do hereby certify that
Michael Coates personally appeared before me dis 161-b
day of July , 2008 , and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
???5?I155511171'fl///??
i,
SEAL
My commission expires 7-4-2009
Farm SWU401-Level Spreader, Filter Strip, Restored Riparian Butter O&M-Rev3 Page 3 of 3
rr?s?,.?c -De. a.
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i
CA,*A% -a (.tS-a z &-A

iC t ls4cott Z:
Secue " 4 7-
I-Sir ?;fv-
Q 4. t, CFs
5CO40- Qlc 4%
I$ rr p'ic
G)=:5. 6 CFS
C? = 7.4 cFs
Sc,xw 5
6tw"
l5"
Q = Z. 7- CFS
'- R. trap W.
Ca l ' dtjL,p4.
13a?.ce i+l?:oA _ 't y. . z s = 3.75
3.75' X 3.75 r

Z ost Wiokc = -3 1,5 = 5
t4S' x q,,5 '
= 3.75
?a+u W;d44, - 3 V, I. IS
3• ?s x 3.75'
?.Nase Wider 3 X t•ZS - 3.?s
3.7sx 3.?5 r
sco, uAm les ska bt class 3 (d.50 = a ' )
LEVEL SPREADER CONSTRUCTION SEQUENCE
1. Insure the site is stabilized and confirm with the Enviromental
Engineer. DENR 791-4200.
2. Install level spreaders as shown on the approved plan. Clear
only as necessary to install these devices. Seed any disturbed
areas as a result to the installation of the level spreader.
3. Ensure level spreader is level to uniformy spread discharge.
4. Insure under drain has been installed and outlet free of debris.
LEVEL SPREADER
CHANNEL -
UNDERDRAIN - SIZED
FOR SITE SOIL CONDITIONS -
DRAIN INTO BYPASS SWALE
FROM _
WATERSHED
FOREBAY -
REINFORCED
CHANNEL
UNDERDRAIN - SIZED
FOR SITE SOIL CONDITIONS --
DRAIN INTO BYPASS SWALE
LEVEL SPREADER I
FLOW PATH
3' LAYER OF
#i7 STONE
3 ft WIDE STRIP
OF FILTER FABRIC
APPROPRIATELY SIZED
CONCRETE FOOTER
LEVEL SPREADER DETAIL - SECTION VIEW
' •3' LAYER CO:: °-= •'.•
•i7 STONE - =_ _ -
LEVEL SPREADER DETAIL - PLAN VIEW
RIPARIAN BUFFER
M
8
Cl)
ZONE 2 BUFFER ZONE 1 BUFFER
20 FT 30 FT