SW6111005_CURRENT PERMIT_20120228

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW�2 /llDoS"
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

'Y
�r
NCDENR
North Carolina Department of Environment and
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E.
Governor
Tyler's Ridge Phase I, LLC &
Attn: Jim O'Malley, Member
5200 West Loomis Road
Greendale. WI 53129
Director
February 28, 2012
Tyler's Ridge Phase II, LLC
Subject: Stormwater Management Permit SW6111005
Tyler's Ridge at Sandhills
High Density Project
Moore County
Dear Mr. O'Malley:
Natural Resources
Dee Freeman
Secretary
The Fayetteville Regional Office of the Division of Water Quality received a complete Stormwater Management
Permit Application for Tyler's Ridge at Sandhills on February 15, 2012. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater Regulations set forth
in Title 15A NCAC 2H .1000. Therefore, we are forwarding herewith Stormwater Management Permit SW6111005
dated February 28, 2012 for the construction, operation and maintenance of the subject project and associated
stormwater BMPs.
This permit shall be effective from the date of issuance until February 27, 2022 and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and Maintenance
requirements in this permit. Failure to establish an adequate system for operation and maintenance of the
stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request
an adjudicatory hearing upon written request within thirty (30) calendar days following receipt of this permit. This
request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General
Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447.
Unless such demands are made, this permit shall be final and binding.
If you have any questions or need additional information concerning this matter, please contact Mike Lawyer at
[phone] or by e-mail at [e-mail].
Sincerely,
Belinda S. Henson
Regional Supervisor
Surface Water Protection Section
BSH: ML/ml
cc: Benjamin Lennon, PE -Michael A. Neal & Associates (via e-mail)
Lou Sadler, RLA-The Hayter Firm (via e-mail)
Brent Lockamy, PE, Town Engineer -Town of Southern Pines (via e-mail)
AFRO Surface Water Protection
DWQ Central Files
Location: 225 Green Street, Suite 714, Fayetteville, North Carolina 28301
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: hap://portal.ncdenr.org/web/wq
An Equal Opportunity 1 Affirmative Action Employer
One
NorthiCa-rolina
Naturally

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Tyler's Ridge Phase 1, LLC & Tyler's Ridge Phase ll, LLC
Tyler's Ridge at Sandhills
Moore County
FOR THE
construction, operation and maintenance of four (4) bioretention cells in compliance with the provisions
of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and the approved stormwater
management plans and specifications and other supporting data as attached and on file with and
approved by the Division of Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until February 27, 2022 and shall be subject to
the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater described in
the application and other supporting data.
This stormwater system has been approved for the management of stormwater runoff as
described in Section 1.6 of this permit. The stormwater controls have been designed to handle
the runoff from a total of 359,492 square feet of total built -upon area.
The tract will be limited to the amount of built -upon area indicated in Section 1.6 of this permit
and per approved plans.
4. All stormwater collection and treatment systems must be located in either dedicated common
areas or recorded easements. The final plats for the project will be recorded showing all such
required easements, in accordance with the approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this project must be
directed into the permitted stormwater control system.
The following design criteria have been provided in the bioretention cells and must be
maintained at design condition:
BMP1
BMP2
BMP4
BMP5
a. Drainage Area, acres:
6.98
6.16
2.49
2.15
Onsite, ft2:
304.062
268,338
108,576
89,225
Offsite, ftZ:
0
0
0
4,423

b.
Total Impervious Surfaces, ft2:
169,221
96,019
51,339
42,913
Buildings/Lots, ft2:
27,217
47,080
0
0
Streets, ft2:
30,291
0
18,398
41,458
Parking, ft2:
46,157
34,182
0
0
Sidewalks, ft2:
13,029
7,652
0
1,455
Other, ft2:
7,830
7,105
0
0
Future, ft2:
44,697
0
32,941
0
C.
Design Storm, inches:
1.0
1.0
1.0
1.0
d.
Max. Ponded Depth, inches:
12.0
12.0
12.0
12.0
e.
Seasonal High Water Table, fmsl:
405
405
405
395
f.
Planting Media Depth, feet:
3
4
4
4
g.
Cell Dimensions, feet:
285x60
185x60
86x58
32x28
h.
Planting Elevation, fmsl:
415
420
430
403
i.
Top Surface Area, ft2:
17,584
12,236
6,000
3,650
j.
Permitted Storage Volume, ft3:
20,426
10,284
6,002
3,650
k.
Bypass/Storage Elevation, fmsl:
416
421
431
403
I.
Drawdown Time, hours:
6
6
6
6
M.
Number of plant species provided:
9
9
9
9
n.
Receiving Stream / River Basin:
Mill Creek / Cape
Fear
o.
Stream Index Number:
18-23-11-(2)
P.
Classification of Water Body:
'WS-III,B;HQW:@"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety, vegetated and
operational for its intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the system will
be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to ensure the
permitted stormwater system functions at optimum efficiency. The approved Operation and
Maintenance Plan must be followed in its entirety and maintenance must occur at the scheduled
intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and re -vegetation of slopes/vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of any and all drainage structures, level spreader, filter
media, planting media, underdrains, catch basins and piping.
g. Access to the cells and outlet structures must be available at all times.
4. Records of maintenance activities for each permitted BMP must be kept and made available
upon request to authorized personnel of DWQ. The records will indicate the date, activity, name
of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit shall become
void unless the facilities are constructed in accordance with the conditions of this permit, the
approved plans and specifications, and other supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has
been installed in accordance with this permit, the approved plans and specifications, and
other supporting documentation. Any deviations from the approved plans and
specifications must be noted on the Certification. A modification may be required for
those deviations.

Z.
If the stormwater system was used as an Erosion Control device, it must be restored to design
conditions prior to operation as.a stormwater treatment device and prior to occupancy of the
facility.
Access to the stormwater facilities shall be maintained via appropriate recorded easements at
all times.
9. The permittee shall submit to the Director and shall have received approval for revised plans,
specifications and calculations prior to construction for any modification to the approved plans,
including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the stormwater
management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area. The
project area is defined as all property owned by the permittee, for which Erosion and
Sedimentation Control Plan approval or a CAMA Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted future areas
shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by the Permittee for
a minimum of ten years from the date of the completion of construction.
12. The Director may notify the permittee when the permitted site does not meet one or more of the
minimum requirements of the permit. Within the time frame specified in the notice, the permittee
shall submit a written time schedule to the Director for modifying the site to meet minimum
requirements. The permittee shall provide copies of revised plans and certification in writing to
the Director that the changes have been made.
13. This permit shall be effective from the date of issuance until February 27, 2022. Application for
permit renewal shall be submitted 180 days prior to the expiration date of this permit and must
be accompanied by the processing fee.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the event of
a change of ownership, or a name change, the permittee must submit a formal permit transfer
request to the Division of Water Quality, accompanied by a completed name/ownership change
form, documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may not be
approved. The permittee is responsible for compliance with all permit conditions until such time
as the Division approves the transfer request.
Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with North
Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances, which may be imposed by other government
agencies (local, state, and federal) having jurisdiction.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be
required by this Division, such as the construction of additional or replacement stormwater
management systems.

5. The permittee grants DENR Staff permission to enter the property during normal business hours
for the purpose of inspecting all components of the permitted stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of a
request for a permit modification, revocation and reissuance or termination does not stay any
permit condition.
Unless specified elsewhere, permanent seeding requirements for the stormwater control must
follow the guidelines established in the North Carolina Erosion and Sediment Control Planning
and Design Manual.
Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit.
9. The permittee shall notify the Division, in writing, of any name, ownership, or mailing address
changes within thirty (30) calendar days.
Permit issued this the twenty-eighth day of February 2012.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for Charles Wakild, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Stormwater Management Permit SW6111005

—Tyler's Ridge at Sandhills Page 1 of 2
Stormwater Management Permit SW6111005
Moore County
Designer's Certification
1, , as a duly registered in the State of
North Carolina, having been authorized to observe (periodically/ weekly/ full time) the construction of
the project,
(Project)
for (Project Owner) hereby state that, to the best of my
abilities, due care and diligence was used in the observation of the project construction such that the
construction was observed to be built within substantial compliance and intent of the approved plans
and specifications.
The checklist of items on page 2 of this form is a part of this Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date

Certification Requirements: Page 2 of 2
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -
upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to
the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation per the vegetation plan.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-circuiting of the
system.
11. The permitted amounts of surface area and/or volume have been provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
15. The required system dimensions are provided per the approved plans.
Please submit this Designer's Certification to: DWQ Fayetteville Regional Office
Surface Water Protection
225 Green Street, Suite 714
Fayetteville, NC 28301

DWQ USE ONLY
Date Received
Fee Paid
Permit Number
-Z - l (
I e
Sas
sw Ois-
Applicable Rules: ❑ Coastal SW -1995
❑ Coastal SW
- 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters
❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I �" 40 Lcy.l a] 01103 Hu FAWS1►1
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
2. Location of Project (street address):
Highway 22
City:Southern Pines County:Moore
3. Directions to project (from nearest major intersection):
PROTECT MAIN ENTRANCE IS APPROXIMATLEY 0.5 SOUTHWEST OF THE INTERSECTION OF HWY 22
AND AIRPORT ROAD (THIS IS A TRAFFIC CIRCLE) IN SOUTHERN PINES, NC
4. Latitude:35° 22' 22" N Longitude:79° 39' 69" W of the main entrance to the project.
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.lf this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) and the status of
construction: ❑Not Started ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑LAMA Major
❑NPDES Industrial Stormwater
®Sedimentation/Erosion Control: 18.16 ac of Disturbed Area
❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:
Ponn SWU-101 Version 07Jun2010 Page 1 of

III. CONTACT INFORMATION
I. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization: TYLER'S RIDGE PHASE 1 LLC yIUA �Ulc�G�� /�-L
Signing Official & Title:IIM O'MALLEY - H. c-'A
b.Contact information for person listed in item la above:
Street Ad d ress: lJo..._. 04 IDcI rn J
City:
Mailing Address (if applicable): SZ-00 (=5T ZO<
City: Gvee✓`94c
State: l,M Zip: —CS I Z c
Phone: ( q iq ) �LI —to I o Fax: Iik ) yZ� —S,5 l/ o
Email: ov o0l" SEC-C-10\oe.l. V-C—
Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer
person who owns the property that the project is located on):
Property Owner
Signing Official & Title:u
b.Contact information for kerso)r listed in item 2a above:
Street Address: scare -4 LJV-e-
Mailing Address (if applicable):
City: State:
Phone: ( ) Fax:
(This is the
3. a. (Optional) Print the name and title of another contact such as the projects construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization: A160EAL A. NtAL i USOCiR'el
Signing Official&Title: �CIJTAtAlt4 k. LGAINQAI %RarGc-r �Nl�InIE61Z
b.Contact information for person listed in item 3a above:
Mailing Address: IDS WEST 6 980 Sf, i SVII-G TO
City: IfIbUS Bo A d e Vk State: NCi Zip: 27Z78
Form SWU-101 Version 07Jun2010 Page 2 of 7

Phone: (91q ) t' qq - ) 2 77 Fax:
Email: WAA101V O /hUAEAlfrl 4160U. (i0M
4. Local jurisdiction for building permits: 10WA/ OF SvTA CW Plnl Ej
Point of Contact: ",I ka CJ. A r Phone tt: (9) ) 4P9 2 - 00 3
IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the storm water runoff will be treated.
Stormwater will be treated with bioretention basins.
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.lf claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the
4. Total Property Area: 33.08 acres
River basin.
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) - Total Surface Water Area (6) = Total Project
Area+:33.08 acres
Total project area shall be calculated to exclude the followin the normal pool of impounded structures, the area
behveen the banks of streanis and rivers, the area below the ormal High Water (NHW) lime or Mena High Water
(MHW) line, and coastal ioctlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BIIA). Non -coastal Wetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 23.2
9. How many drainage areas does the project have?4 (For high density, count 1 for each proposed engineered
stornavater BMP. For loco density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Form SWU-101 Version 07Jun2010 Page 3 of 7

Basin Information
Draina e Area _
Drainage Area
Drainage Area
Drainage Area _
Receiving Stream Name
Stream Class *
Stream Index Number
Total Drainage Area (so
On -site Drainage Area (so
Off -site Drainage Area (so
Proposed Impervious Area** s
Impervious Area** total
Impervious** Surface Area
Drainage Area _
Draina
Area _
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
On -site Streets (so
On -site Parking (so
On -site Sidewalks (so
Other on -site (so
Future (so
Off -site (so
Existing BUA*** (so
Total (so:
Stream Class and Index Number can be determined at: http://portal.ncdenr.org/webftuq(ps/csu/classificatiorts
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed told which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation.
Projects in Union County: Contact DWQ Central Office stgffto check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent smrmwaler requirements as per NCAC 0213.0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from http://portal.ncdenr.org/web/wq/ws/su/bmp-manual.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available fromhttp://portal.ncdennorg/web/wq/ws/su/statesw/forms does. The complete
application package should be submitted to the appropriate DWQ Office. (The appropriate office may be
found by locating project on the interactive online map at http://portal.ncdenr.org/web/wq/ws/su/maps.)
Please indicate that the following required information have been provided by initialing in the space provided
for each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions
for each submitted application package from http://porta1.ncdenr.org/web/wq/ws/su/statesw/forms does.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. &-t-
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants 6&L
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M 9AA-
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
OL-
http://www.envhelp.org/pages/onestopexpress.htniI for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
Form SWU-101 Version 07Jun2010 Page 4 of 7

5.
A detailed narrative (one to two pages) describing the stormwater treatment/managementfor
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6.
A USGS map identifying the site location. If the receiving stream is reported as class SA or the
)'(--
receiving stream drains to class SA waters within 1/2 mile of the site boundary, include the 1/2
mile radius on the map.
7.
Sealed, signed and dated calculations.
/i7l
8.
Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
6X=
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
I. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
I. Details of roads, drainage features, collection systems, and stormwater control measures.
on. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9.
Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"xll" copy of the NRCS County Soils map with the'
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule o site visit for DWQ to verifj the SHWT prior
to subnittal, [phone].)
3`j 141-
Q d
10.
A copy of the most current property deed. Deed book: i 8 Page No: I42
�/
11.
For corporations and limited liability corporations (LLC): Provide documentation from the NCB
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
http://www.secretary.state.nc.us/Corporatioiis/CSearch.aspx
VIL
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://portal.ncdenr.org/web/wq/ws/so/statesw/forms does. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ, and that they will be recorded prior to the sale of any lot.
Form SWU-101 Version 07Jun2010 Page 5 of 7

1�/II�iLi7►6Y�1NII:AYI�fi;fY�7Nu/:IIY[�]isl:�i;1�7:lYyY.[�](�Y./:11Y[�li•I
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:BEN1AMIN LENNON
Consulting Firm: MICHEAL A. NEAL & ASSOCIATES
Mailing Address:105 WEST CORBIN STREET
City:HILLSBOROUGH State:NC Zip:27278
Phone: (919 ) 644-1277
E maiLBLENNONQMANAENGINEERS.COM
Fax: ( )
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)lex.l• Lzc- w�
I, (print or type none of person listed in Contact Information, item 2a) �a S a 1M� certify that I
own the property identified in this permit application, and thus give permission to (print or ty e name of person PIS
listed in Can tact Information, itenn 1 a) Iylck's ZSjc-P1`c 1 , LLe. with (print or type name of organization listed in 1 i r t
Contact Information, item 1n) '5 . n to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. 1 understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessmeiKof civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Date: (0-19Z0(1
a,Notary Public for the State of County of
tj' )'.t su-fie.« , do hereby certify that J v-wes Q •0 %V"`d L� I - v�U personally appeared
before me this II Y day of (DJo-k&O ZAtt , and acknowledge the due executi 1 of the application for
a stormwater permit. Witness my hand and official seal, 0
119,
O,�PAV PUe`/
? O
{t CAROLJ.
A MUELLER
SEAL
My commission expires -' o /-3
Form SWU-101 Version 07Jun2010 Page 6 of 7

* t ( 6 JOIIAO j *
A3JJ3um 11
V0

X. APPLICANT'S CERTIFICATION �'5. 9. Op'1m,61 �e'y-
I, (print or type nmae of person listed in Contract Information, item la) �Y1eAd Z'e7 P"'4j-17, Ur -
certify
that the information included on this permit application form is, to the best f my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwater rules under 15A NCAC 2H .1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211.
Date: i0-/q—z011
L T. /%%dzlhE,e , a Notary Public for the State of County of
do hereby certify that i�.v kW'P^�"personally appeared
before me this q day of ZOf f . and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal, e�L',f
�PpY PUe�,�
20 Cic"4�a',i
CAROL J. ,
MUELLER t
4 s =
l
/JIM 1111O' WIS
SEAL
Mycommissionexpires �/z "40/�
Form SWU-101 Version 07Jun2010 Page 7 of 7

wnErrEU
cvuori

Bioretention Basin Bioretention Basin Bioretention Basin Bioretention Basin
#1 #2 #3 #4
Basin Information
Drainage Area 1
Drainage Area 2
Drainage Area 3
Drainage Area 4
Receiving Stream Name
Mill Creek
Mill Creek
Mill Creek
Mill Creek
Stream Class
WSIII; HQW:@
WSIII; HQW:@
WSIII; HQW:@
WSIII; HQW:@
Stream Index Number
18-23-11-(1)
18-23-11- 1
18-23-11- 1
18-23-11-(1
Total Drainage Area (sf)
299,516
167,565
109.089
112,910
On -Site Drainage Area (sf)
299,516
167,565
109,089
112,910
Off -site Drainage Area sf)
0
0
0
0
Proposed Im ervious Area (sf)
166,146
66,169
40,681
50,777
°/0 l mpervious Area (total)
55.47%
39.49%
37.30%
44.97°/u

Permit Number:
(to be provided by D WQ)
®��
G
O� pWAT6;90
A
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required
Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I91P,R09 EC:TjINF,ORMATll0N
Project name
TYLER'S RIDGE AT SANDHILLS
Contact name
BENJAMIN LENNON -MICHEAL A. NEAL & ASSOCIATES
Phone number
919-644-1277
Date
October 6, 2011
Drainage area number
5
Site Characteristics
Drainage area
18,648 ftZ
Impervious area
9,587 ft'
Percent impervious
51.4% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 inmr
Pre -development 1-yr, 24-hr peak flow
2.470 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-2.470 ft3/sec
Storage Volume: Nori Waters
Minimum volume required
797.0 ft3
Volume provided
1,008.0 ft3
OK
Storage Volume: SA Waters
1.5" runoff volume
ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
0 ft3
Volume provided
ft3
Cell Dimensions
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 ft
Surface area of the top of the bioretention cell
1, 180.0 ftz
OK
Length:
32 If
OK
Width'.
28 ft
OK
-or- Radius
If
Media and Soils Summary
Drawdown time, ponded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 fir
OK
Drawdown time, total:
24 fir
In -situ soil:
Soil permeability
2.50 in/hr
OK
Planting media soil..
Soil permeability
2.00 in/hr
OK
Soil composition
• Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
• Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 1 of 2

Permit Number.
(to be provided by Di
Basin Elevations
Temporary pool elevation
Type of bioretention cell (answer 'Y" to only one of the two
following questions):
Is this a grassed cell?
Is this a cell with trees/shrubs?
Planting elevation (top of the mulch or grass sod layer)
Depth of mulch
Bottom of the planting media soil
Planting media depth
Depth of washed sand below planting media soil
Are underdrains being installed?
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
SHWT elevation
Distance from bottom to SHWT
Internal Water Storage Zone (IWS)
Does the design include IWS
Elevation of the top of the upturned elbow
Separation of IWS and Surface
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume Flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP localed at least 100 feel from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in
the future?
Are the slopes draining to the bioretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X' in the shaded cell)
Gravel and grass
(8inches gravel followed by 3-5Itof grass)
Grassed Swale
Forebay
Other
403.00 frost
n (Y or N)
y (Y or N)
402 fmsl
4inches
398 fmsl
4 It
0,33 It
in (YorN)
N/A
0 ft
397.67 fmsl
395 fmsl
2.67 it
OK media depth
OK
OK
Insufficient factor of safety.
OK
n (Y or N)
n/a tryst
#VALUE!ft #VALUE!
3
3
3 OK
N (Y or N) Excess volume must bypass cell,
N (Y or N) Excess volume must pass through filter.
If
(Y or N)
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N/A ft/sec Insufficient inlet velocity unless energy dissipating devices are
being used.
N (Y or N) OK
n (Y or N) OK
Y (Y or N) OK
OK
Form SW401-Bioretenlion-Rev. 8
June 25, 2010
Parts I and II. Design Summary, Page 2 of 2

High Density Residential Subdivisions
Deed Restrictions & Protective Covenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Stormwater Management Regulations,
deed restrictions and protective covenants are required for High Density Residential Subdivisions where
lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility. Deed
restrictions and protective covenants are necessary to ensure that the development maintains a "built -upon"
area consis ent with the design criteria used tp size the stormwater control facility.
lylea (cc- <i `iy(C a Rzey, P4.,A,_JL,Ccc
I, Jn r es r3. 0'll —wv iut , ack?fowledge, affirm and agree by my signature below, that I will
cause the following deed r strictions and covenants to be recorded prior to the sale of any lot:
1. The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number as issued by the Division of Water Quality under the
Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming under
them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express written
consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the concurrence
of the Division of Water Quality.
6. The maximum allowable built -upon area per lot is varies square feet. This allotted amount includes
any built -upon area constructed within the lot property boundaries, and that portion of the right-of-way
between the front lot line and the edge of the pavement. Built upon area includes, but is not limited to,
structures, asphalt, concrete, gravel, brick, stone, slate, coquina and parking areas, but does not
include raised, open wood decking, or the water surface of swimming pools.
OR, if the proposed built -upon areas per lot will vary, please REPLACE #6 above with the following:
6. The maximum built -upon area per lot, in square feet, is as listed below:
Lot # BUA
1,2,3,4,&5 338,897sf
This allotted amount includes any built -upon area constructed within the lot property boundaries, and
that portion of the right-of-way between the front lot line and the edge of the pavement. Built upon area
includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate, coquina and
parking areas, but does not include raised, open wood decking, or the water surface of swimming
pools.
Each lot will maintain a 30** foot wide vegetated buffer between all impervious areas and surface
waters.
**50 foot for projects located in the 20 coastal counties.
8. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street, grading
the lot to drain toward the street, or grading perimeter swales to collect the lot runoff and directing them
into a component of the stormwater collection system. Lots that will naturally drain into the system are
not required to provide these additional measures.
Form DRPC-3 Rev.2 05Nov2009 Page 1 of 2

r High Density Residential Subdivisions
Deed Restrictions & Protective Covenances
TIC ��� Piz, GLc � yid 2;8�c PIS �, [tee
Signature: new. N wow Date: 10-1Y L
I, 6/44�n ,C . % - /%%ul //f/1_� , a Notary Public in the
State of W scw-►A,— County of
do hereby certify that
— Iowa A
3 • -
personally appeared
before me this the
t o
day of 6cT10 �%
20 1( , and acknowledge
the due execution of the foregoing instrument. Witness my hand and official seal,
SEAL
My Commission expires
* (CAROL I I*
MUELLER I
Form DRPC-3 Rev.2 05Nov2009 Page 2 of 2

Wf1EffEti
CdtSof' 1 f
��1 t'tf,: big i 4�tt}1

Permit Number) QP
(to be provided by DWQ)
®N� O? FWAiFgOG
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name TYLER'S RIDGE AT SANDHILLS
Contact name BENJAMIN LENNON -MICHEAL A. NEAL 8 ASSOCIATES
Phone number
Date
Drainage area number
Drainage area
Impervious area
Percent impervious
Design rainfall depth
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr peak flow
Post -development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak control
Storage Volume: Non-SAWaters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Cell Dimensions
Ponding depth of water
Ponding depth of water
Surface area of the top of the biorelention cell
Length:
Width:
-or- Radius
Media and Soils Summary
Drawdown time, ponded volume
Drawdown time, to 24 inches below surface
Drawdown time, total:
In -situ soil:
Soil permeability
Planting media soil..
Soil permeability
Soil composition
• Sand (by volume)
• Fines (by volume)
• Organic (by volume)
Phosphorus Index (P-Index) of media
Form SW401-Bioretention-Rev.6
June 25, 2010
919-644-1277
October 6, 2011
299,516 ft2
166,146 ftz
55.5% %
1.0 inch
y (Y or N)
3.09 in
0.129 in/hr
7.060 ft3/sec
0.000 1
-7.060 ft3/sec
13,709.0 ft3
20,426.0 ft3 OK
ft3
ft3
ft3
0 ft3
ft3
12 inches
1,00 ft
17,584.0 rye
285 ft
60 It
ft
6 hr
18 hr
24 hr
2.50 in/hr
2.00 in/hr
85%
10%
5%
Total: 100%
20 (unitless)
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
OK
Parts I and II. Design Summary. Page 1 of 2

Permit Number:
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
416.00 fmsl
Type of bioretention cell (answer 'Y" to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
(Y or N) OK media depth
Planting elevation (top of the mulch or grass sod layer)
415 fmsl
Depth of mulch
4 inches OK
Bottom of the planting media soil
412 fmsl
Planting media depth
3 ft
Depth of washed sand below planting media soil
_ 0.33 ft
Are underdrains being installed? 0 (Y or N)
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
0 ft
the bottom of the cell to account for underdrains
Bottom of the cell required
411.67 fmsl
SHWT elevation
405 fmsl
Distance from bottom to SHWT
6.67 ft OK
Internal Water Storage Zone (IWS)
Does the design include IWS
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
415 ft
Planting Plan
Number of tree species
3
Number of shrub species
3
Number of herbaceous groundcover species
3
OK
Additional Information
Does volume in excess of the design volume bypass the
Y
(Y or N)
OK
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
SX
N
(Y or N)
Excess volume must pass through filter. — AOo
through a vegetated filter?
length filter?
It
What is the of the vegetated
OIL
Does the design use a level spreader to evenly distribute flow?
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if
Y
(Y or N)
OK
SA waters)?
Is the BMP localed at least 100 feet from water supply wells?
Y
(Y or N)
OK
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
OK
Is the BMP located in a proposed drainage easement with access
Y
(Y or N)
OK
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A ft/sec
Insufficient inlet velocity unless energy dissipating devices are
being used.
Is the area surrounding the cell likely to undergo development in
N
(Y or N)
OK
the future?
Are the slopes draining to the bioretention cell greater than 20%?
N
(Y or N)
OK
Is the drainage area permanently stabilized? Y (Y or N) OK
Pretreatment Used
(Indicate Type Used with an'V in the shaded cell)
Gravel and grass
(81inches gravel followed by 3-5 ft of grass)
Grassed Swale OK
Forebay X
Other
Form SW401-Bioretention-Rev.e
June 25, 2010 Parts I and II. Design Summary, Page 2 of 2

Permit Number: SWklloo
(to be provided by DWQ)
®��
NCDENR
1/?r1LL0F��wW�1'^^Ar.r�T//p��g\�jj\O11
�I✓w_�f
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
rrolect name
Contact name
Phone number
Dale
Drainage area number
TYLERS RIDGE AT SANDHILLS
BENJAMIN LENNON -MICHEAL A. NEAL 8 ASSOCIATES
919-644-1277
October 6, 2011
2
II..DESIGN INFORMATION
Site Characteristics
Drainage area
167,565 fl=
Impervious area
66,169 ft2
Percent impervious
39.5% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak Flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 in/hr
Pre -development 1-yr, 24-hr peak flow
3.460 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-3.460 ft'/sec
Storage Volume: Nori Waters
Minimum volume required
5,661.0 ft3
Volume provided
10,284.0 ft3 OK
Storage Volume: SA Waters
1.5" runoff volume
ft3
Pre -development 1-yr, 24-hr runoff
W
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
o W
Volume provided
W
Cell Dimensions
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 It
Surface area of the lop of the bioretention cell
12,236.0 ftz
OK
Length:
185 ft
OK
Width:
60 ft
OK
-or- Radius
It
Media and Soils Summary
Drawdown time, ponded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK
Drawdown time, total:
24 hr
In -situ soil:
Soil permeability
2.50 in/hr
OK
Planting media soil:
Soil permeability
2.00 in/hr
OK
Soil composition
%Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
• Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Form SW401-Bioretention-Rev a
June 25, 2010
Parts I and 11, Design Summary, Page 1 of 2

Permit Number.
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
421.00 fmsl
Type of bioretention cell (answer "Y" to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
(Y or N) OK media depth
Planting elevation (top of the mulch or grass sod layer)
420 fmsl
Depth of mulch
4 inches OK
Bottom of the planting media soil
4161
Planting media depth
4 It
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed? �p (Y or N)
How many clean out pipes are being installed?
N/A OK
What factor of safety is used for sizing the underdrains? (See
N/A Insu r sa ety.
o
BMP Manual Section 12.3.6)
,�G�
Additional distance between the bottom of the planting media and
0 It
the bottom of the cell to account for underdrains
Bottom of the cell required
415.671
SHWT elevation
405 first
Distance from bottom to SHWT
10.671t OK
Internal Water Storage Zone (IWS)
Does the design include IWS
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
420 ft
Planting Plan
Number of tree species
3
Number of shrub species
3
Number of herbaceous groundcover species
3
OK
Additional Information
Does volume in excess of the design volume bypass the
N
(Y or N)
Excess volume must bypass cell.
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
//__ --
Excess volume must pass through filter. n d 3A .�,0T 43
through a vegetated filter?
What is the length of the vegetated filter?
ft
Does the design use a level spreader to evenly distribute flow?
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if
Y
(Y or N)
OK
SA waters)?
Is the BMP localed at least 100 feet from water supply wells?
Y
(Y or N)
OK
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
OK
Is the BMP located in a proposed drainage easement with access
Y
(Y or N)
OK
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A ft/sec
Insufficient inlet velocity unless energy dissipating devices are
being used.
Is the area surrounding the cell likely to undergo development in
N
(Y or N)
OK
the future?
Are the slopes draining to the bioretention cell greater than 20%?
N
(Y or N)
OK
Is the drainage area permanently stabilized? Y (Y or N) OK
Pretreatment Used
(Indicate Type Used with an "X" in the shaded cell)
Gravel and grass
(81nches gravel followed by 3-5Itof grass)
Grassed Swale OK
Forebay X
Other
Form SW401-Biarelention-Rev.9
June 25, 2010 Parts I and I. Design Summary, Page 2 of 2

Permit Number: 1SW (ONO-S
(to be provided by DV✓Q)
Of
VAT t.9%
9
r
O Y
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
rroleci name
Contact name
Phone number
Date
Drainage area number
TYLER'S RIDGE AT SANDHILLS
BENJAMIN LENNON -MICHEAL A. NEAL &
919-644-1277
2011
II. DESIGN INFORMATION
Site Characteristics
Drainage area
109,089 it
Impervious area
40,687 Ili
Percent impervious
37.3% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 in/hr
Pre -development 1-yr, 24-hr peak Flow
3.460 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-3.460 ft'/sec
Storage Volume: Non -SA Waters
Minimum volume required
3,506.0 ft 3
Volume provided
3,600.0 ft'
OK
Storage Volume: SAWaters
1.5" runoff volume
ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
ft'
Minimum volume required
0 ft3
Volume provided
ft'
Cell Dimensions
Pending depth of water
12 inches
OK
Pending depth of water
1,00 ft
Surface area of the top of the bioretention cell
3,587.0 fli
OK
Length:
79 ft
OK
Width:
46 ft
OK
-or- Radius
ft
Media and Soils Summary
Drawdown time, bonded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK ,
Drawdown time, total:
24 hr
In -situ soil.
Soil permeability
2.50 in/hr
OK
Planting media soil.'
Soil permeability
2,00 in/hr
OK
Soil composition
%Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
% Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK ,
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 2

Permit Number:
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
438.00 fmsl
Type of bioretention cell (answer'Y' to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
(Y or N)
OK media depth
Planting elevation (top of the mulch or grass sod layer)
437 fmsl
Depth of mulch
4 inches
OK
Bottom of the planting media soil
433 fmsl
Planting media depth
4 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
(Y or N)
How many clean out pipes are being installed?
N/A
OK
What factor of safety is used for sizing the underdrains? (See
N/A
Insuffi
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
0 ft
the bottom of the cell to account for underdrains
Bottom of the cell required
432.67 fmsl
SHWT elevation
405 fmsl
Distance from bottom to SHWT
27.67 ft
OK
Internal Water Storage Zone (IWS)
Does the design Include IWS
(Y or N)
Elevation of the top of the upturned elbow
n/a fmsl
Separation of IWS and Surface
VALU I
#VALUE!
Planting Plan
Number of tree species
3
Number of shrub species
3
Number of herbaceous groundcover species
3
OK
Additional Information
Does volume in excess of the design volume bypass the
N
(Y or N)
Excess volume must bypass cell.
bioretenlion cell?
Does volume in excess of the design volume flow evenly distributed
N
N)
/
Excess must through filter. —y16l
through a vegetated filter?
(Y or
volume pass
What is the length of the vegetated filter?
ft
Does the design use a level spreader to evenly distribute flow?
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if
Y
(Y or N)
OK
SA waters)?
Is the BMP localed at least 100 feel from water supply wells?
Y
(Y or N)
OK
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
OK
Is the BMP located in a proposed drainage easement with access
Y
(Y or N)
OK
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A ft/sec
Insufficient inlet velocity unless energy dissipating devices are
being used.
Is the area surrounding the cell likely to undergo development in
N
(Y or N)
OK
the future?
Are the slopes draining to the Doretention cell greater than 20%?
N
(Y or N)
OK
Is the drainage area permanently stabilized? Y (Y or N) OK
Pretreatment Used
(Indicate Type Used with an'X' in the shaded cell)
Gravel and grass
(flinches gravel followed by 3-5 ft of grass)
Grassed Swale OK
Forebay X
Other
Form SW401-Bioretention-Rev.9
June 25, 2010 Parts t and II. Design Summary, Page 2 of 2

Permit Number: SG✓
(to be Provided by DWQ)
OF wA7F,9
®�� O2 OG
i
Ni
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
L'PROJECT INFORMATION -
Project name
TYLER'S RIDGE AT SANDHILLS
Contact name
BENJAMIN LENNON -MICHEAL A. NEAL & ASSOCIATES
Phone number
919-644-1277
Date
October 6, 2011
Drainage area number
4
II. DESIGN, INFORMATION
Site Characteristics
Drainage area
112,910 h2
Impervious area
50,777 ft'
Percent impervious
45.0% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required? '
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 in/hr
Pre -development 1-yr, 24-hr peak flow
3.460 ft'/sec
Post -development 1-yr, 24-hr peak Flow
0.000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-3.460 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
4,279.0 ft3
Volume provided
4,743.0 ft3
OK
Storage Volume: SA Waters
1.5' runoff volume
ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
0 ft3
Volume provided
ft3
Cell Dimensions
Ponding depth of water
12 inches
OK
Fording depth of water
1.00 ft
Surface area of the top of the bioretention cell
5,185.0 ft'
OK
Length:
86 ft
OK
Width:
58 ft
OK
-or- Radius
ft
Media and Soils Summary
Drawdown time, bonded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK
Drawdown time, total:
24 hr
In -situ soil..
Soil permeability
2.50 in/hr
OK
Planting media soil:
Soil permeability
2.00 in/hr
OK
Soil composition
• Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
• Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 2

Permit Number:
(to be provided by DWO)
Basin Elevations
Temporary pool elevation
Type of bioretention cell (answer 'Y" to only one of the two
following questions):
Is this a grassed cell?
Is this a cell with trees/shrubs?
Planting elevation (top of the mulch or grass sod layer)
Depth of mulch
Bottom of the planting media soil
Planting media depth
Depth of washed sand below planting media soil
Are underdrains being installed?
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
SHWT elevation
Distance from bottom to SHWT
Internal Water Storage Zone (IWS)
Does the design include IWS
Elevation of the top of the upturned elbow
Separation of IWS and Surface
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP localed at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in
the future?
Are the slopes draining to the bloretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an'X" in the shaded cell)
Gravel and grass
(81inches gravel followed by 3-5 it of grass)
Grassed swale
Forebay
Other
431.00 fmsl
—ynn (YorN)
(YorN)
430 fmsl
4 inches
426 fmsl
4ft
0.33 ft
(Y or N)
N/A
N/A
0 ft
425.67 fmsl
405 fmsl
20.67 it
(Y or N)
n/a fmsl
#VALUE!ft
3
3
3
OK media depth
OK
OK
Ins ' ont-faC[ r>say.
OK
X2
#VALUE!
N (Y or N) Excess volume must bypass cell.
N (Y or N) Excess volume must pass through filter. —vto"r wcf1�T
ft O�
(Y or N)
Y (Y or N) OK
Y (YorN) OK
Y (Y or N) OK
Y (Y or N) OK
N/A ft/sec Insufficient inlet velocity unless energy dissipating devices are
being used.
N (Y or N) OK
n (Y or N) OK
Y (Y or N) OK
X
OK
Form SW401-Sioretention-Rev.e
June 25, 2010 Parts I and II. Design Summary, Page 2 of 2

Permit Number: 5"woo-5—
(m be provided by DWQ)
Drainage Area Number: 1..
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will betaken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of 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:
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide time and a
one-time fertilizer application.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev.3
Page 1 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
(if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
ou tlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 of 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:TYLERS RIDGE AT SANDHILLS
BMP drainage area number:
Print name: / 4 le f- `5
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.
a Notary Public for the State of
�� i �L171 lit n County of V t 1 Lw, �t 1 t , do hereby certify that l
personally appeared before me this�T
day of 00 -ho �J and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seat,
=i
NOTA
'
A
VBLIC.
'yJ� �. ,.N
O/. VAS O,
/I�Cj
��11 ��
,/` 'II
`�
SEAL
1 t.JQj{.l,C� �LVYI��VIf.t�t�t�(�it_J
My commission expires
Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4

01%5!:ir:i,v
r rr3($iifi ai:t•

Permit Number: SwLll�oas
(to be provided by DWQ)
Drainage Area Number: 0-
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
- Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
- Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
- Heavy equipment will NEVER be driven over the bioretention cell.
- Special care will be taken to prevent sediment from entering the bioretention cell.
- Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of 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:
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
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.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or Swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev3 Page 1 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
(if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 of

Permit Number:
(to be provided by DWQ)
1 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.
Projecl name:TYLERS RIDGE AT SANDHILLS
BMP drainage area
Print
J.
Address: 5 ZOD Q e4�t 600""- on� , Greed �e�fni+ S31 z S
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, H � Oxt l_Q , a Notary Public for the State of
1�1 S O,pn 5 (tt VCounty of J)ot, .`k- a , do hereby certify that
two Pu personally appeared before me this'IL�
day of 00 +to (1p V c)0 L I , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
�%pTAgY
PU6%.%G,
SEAL
My commission expires 9 - '�-O -'�O1 V
Form SW401-Bioretention I&M-Rev. 2 Page 4 of 4

^{
1`
t9
r�j'"fP;'::fNS�'

Permit Number:
(m be provided by DWQ)
Drainage Area Number: 3
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will betaken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of 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:
Potentialproblems:
How 1 will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
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.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev.3
Page 1 of 4

BMP element:
The pretreatment area
The bioretention cell:
vegetation
The bioretention cell:
soils and mulch
Potential problems:
Plow is bypassing
pretreatment area and/or
gullies have formed.
Sediment has accumulated to
a depth greater than three
inches.
Erosion has occurred.
Weeds are present.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
are dead, diseased or
dying.
Tree stakes/wires are present
six months after planting.
Mulch is breaking down or
has floated away.
Soils and/or mulch are
clogged with sediment.
An annual soil test shows that
pFI has dropped or heavy
metals have accumulated in
the soil media.
How I will remediate the problem:
Regrade if necessary to route all
flow to the pretreatment area.
Restabilize the area after grading.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
restabilize the pretreatment area.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
Remove the weeds, preferably by
hand.
Prune according to best professional
practices.
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.
Remove tree stake/wires (which
can kill the tree if not removed).
Spot mulch if there are only random
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Determine the extent of the clogging
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
Dolomitic lime shall be applied as
recommended per the soil test and
toxic soils shall be removed,
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev3
Page 2 of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3 Page 3 of 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:TYLERS RIDGE AT SANDHILLS
6MP drainage area number:
Print
Title: � uw e s & ' 0 I
=L
I D
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.
a Notary Public for the State of
W -� SQryns t VI—, County of k 11 , do hereby certify that
17`tiwt r S D personally appeared before me this
day of t aD I 1 , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
ZIAJ
SIX
�pTAgy Zz
pUSO
,i�'r•OF
SEAL
My commission expires S- - -3"U - a0 Y
�iVwu.�u otir�r-u-J
Form SW401-Bioretention I&M-Rev. 2
Page 4 of 4

Permit Number: e L-/&M�665�
(to be provided by DWQ)
Drainage Area Number: q
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of 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:
Potentialproblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide time and a
one-time fertilizer application.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the Swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form SW401-Bioretention O&M-Rev.3 Page 1 of

BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
ossible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3
Page 2 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Bioretention O&M-Rev.3
Page 3 of 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:TYLERS RIDGE AT SANDHILLS
6MP drainage area
Print
Title:
Address: SZDO L.DeA-�- Lovu--%A 'kZcK9t re e OZ S3(2g
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.
1, �.i ehe.[ �t 7--( 1V,wt e-Ylnn,�.0 a Notary Public for the State of
I t� i SCuV1� 1 o County of u)_vc , Lj t do hereby certify that
1y.wt AS � (), VA �\AU \,i personally appeared before me this Q ( S F
day of O e'+O 6r-'( , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
�oTaRr
PulsoG
SEAL
My commission expires 3 Gc - (] . C 6 � �-
Form SW401-Bioretention 1&M-Rev. 2
Page 4 of 4

•
t
" u4e.•. ,r
Qj
sty .iy r ..........

NCDiiENR
Permit Number:5✓V o0s__
(to be provided by DWQ)
o? pwA TfA?
% y
1 y
o
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Project name TYLER'S RIDGE AT SANDHILLS
Contact name ' BENJAMIN LENNON -MICHEAL A. NEAL & ASSOCIATES
Phone number 919-644-1277
Date February 1, 2012
Drainage area number 1
II°�DESIGNIINFCRMATION �CY�etR£..N., w ,. x » z�aSvu+. :=wA. �...a i = :..•..
Site Characteristics
Drainage area
304,062 ft'
Impervious area
169,221 ftz
Percent impervious
55.7% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 m/hr
Pre -development 1-yr, 24-hr peak flow
7.060 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft,/Sec
Pre/Post 1-yr, 24-hr peak control
-7.060 ft'/sec
Storage Volume: Non -SA Waters
volume required
Min required
13,959.0 ft'volume
13,959.0 ft3
ft'
Volume provided
20,426.0 ft' OK
Storage Volume: SAWaters
1.5" runoff volume
ff3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
0 ft3
Volume provided
it3
Cell Dimensions
Pending depth of water
Fording depth of water
Surface area of the top of the bioretention cell
Length:
Width:
-or- Radius
Media and Soils Summary
Drawdown time, ponded volume
Drawdown time, to 24 inches below surface
Drawdown time, total:
In -situ soil.
Soil permeability
Planting media soil.
Soil permeability
Soil composition
• Sand (by volume)
• Fines (by volume)
• Organic (by volume)
Phosphorus Index (P-Index) of media
Form SW401-13ioretention-Rev.a
June 25, 2010
12 inches
OK
1.00 ft
17,584.0 ft'
OK
285 ft
OK
60 ft
OK
ft
6 hr OK
18 hr OK
24 hr
2.50 inlhr OK
2.00 in/hr OK
85% OK
10% OK
5% OK
Total: 100%
20 (unitless) OK
Parts I and n. Design Summary, Page 1 of 2

Basin Elevations
Permit Number S vGii`11d dS
(to be provided by DWG)
Temporary pool elevation
416.00 fmsl
Type of bioretention cell (answer "Y' to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
y (Y or N) OK media depth
Planting elevation (top of the mulch or grass sod layer)
415 fmsl
Depth of mulch
4 inches OK
Bottom of the planting media soil
412 fmsl
Planting media depth
3 It
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
in (Y or N)
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
0 ft
the bottom of the cell to account for underdrains
Bottom of the cell required
411.67 fmsl
SHWT elevation
405 fmsl
Distance from bottom to SHWT
6.67 If OK
Internal Water Storage Zone (IWS)
Does the design include IWS in (Y or N)
Elevation of the top of the upturned elbow fmsl
Separation of IWS and Surface 415 ft
Planting Plan
Number of tree species 3
Number of shrub species 3
Number of herbaceous groundcover species 3 OK
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
through a vegetated filled?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in
the future?
Are the slopes draining to the bioretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X in the shaded cell)
Gravel and grass
(flinches gravel followed by 3-5 It of grass)
Grassed Swale
Forebay
Other
Y (YorN) OK/ /
N (Y or N) Excess volume must pass through filter. — el Tilt .Sk'V'ka
It d
(Y or N)
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N/A ft/sec Insufficient inlet velocity unless energy dissipating devices are
being used.
N (Y or N) OK
N (Y or N) OK
Y (Y or N) OK
0
OK
Form SW401-Siorretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 2

®��
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
Permit Number,I-/ Q(77
(to be provided by D WQJ
of WATF4,
02 OG
5 <
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
I%P,ROJEC,T,)INF,ORMA'TION .b�'K?�
Project name TYLER'S RIDGE AT SANDHILLS
Contact name BENJAMIN LENNON -MICHEAL A. NEAL & ASSOCIATES
Phone number 919-644-1277
Date February 1, 2012
Drainage area number 2
Site Characteristics
Drainage area
268,338 ft'
Impervious area
96,019 ft2
Percent impervious
35.8%
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 in/hr
Pre -development 1-yr, 24-hr peak flow
3.460 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-3.460 ff'/sec
Storage Volume: Non-SAWaters
Minimum volume required
8,320.0 ft'
Volume provided
10,284.0 ft'
OK
Storage Volume: SA Waters
1.5" runoff volume
ft3
Pre -development 1-yr, 24-hr runoff
If
Post -development 1-yr, 24-hr runoff
ff3
Minimum volume required
0 ft3
Volume provided
ft3
Cell Dimensions
Pending depth of water
12 inches
OK
Pending depth of water
1.00 it
Surface area of the top of the bicretention cell
12,236.0 ft'
OK
Length:
185 it
OK
Width:
60 If
OK
-or- Radius
it
Media and Soils Summary
Drawdown time, ponded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK
Drawdown time, total:
24 hr
In -situ soil:
Soil permeability
2.50 in/hr
OK
Planting media soil..
Soil permeability
2.00 in/hr
OK
Soil composition
• Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
• Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and It. Design Summary, Page 1 of 2

Permit Number:
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
Type of bioretention cell (answer "Y' to only one of the two
following questions):
Is this a grassed cell?
Is this a cell with trees/shrubs?
Planting elevation (top of the mulch or grass sod layer)
Depth of mulch
Bottom of the planting media soil
Planting media depth
Depth of washed sand below planting media soil
Are underdrains being installed?
How many clean out pipes are being installed?
What factor of safety is used for sizing the underdrains? (See
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
the bottom of the cell to account for underdrains
Bottom of the cell required
SHWT elevation
Distance from bottom to SHWT
Internal Water Storage Zone (IWS)
Does the design include IWS
Elevation of the top of the upturned elbow
Separation of IWS and Surface
Planting Plan
Number of tree species
Number of shrub species
Number of herbaceous groundcover species
Additional Information
Does volume in excess of the design volume bypass the
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3,1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
421.001
n (Y or N)
y (Y or N)
420 fmsl
4 inches
416 fmsl
4 ft
0.33 It
n (Y or N)
N/A
N/A
Off
415.67 fmsl
405 frost
10.67 It
n (Y or N)
fmsl
420 ff
3
3
3
1
lil
OK media depth
OK
OK
Insufficient factor of safety.
ran
OK
(Y or N) Excess volume must bypass cell.
(Y or N) Excess volume must pass through filter. _ Wc� Al 'C'j
It
(Y or N)
(Y or N) OK
(Y or N) OK
(Y or N) OK
(Y or N) OK
N/A ft/sec Insufficient inlet velocity unless energy dissipating devices are
being used.
Is the area surrounding the cell likely to undergo development in N (Y or N) OK
the future?
Are the slopes draining to the bioretention cell greater than 20%? N (Y or N) OK
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X' in the shaded cell)
Gravel and grass
(8 mches gravel followed by 3-5 ff of grass)
Grassed swale
Forebay
Other
Y (Y or N) OK
r.
OK
Form SW401 -Bioretention- Rev. 8
June 25, 2010
Pans I and II. Design Summary, Page 2 of 2

NCDENR
Permit Number D6S
(to be provded by DWQ)
O�OF WA7Fg0
% T
O T
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I1P,RO'JECIINF,ORMATiION
Project name TYLER'S RIDGE AT SANDHILLS
Contact name BENJAMIN LENNON -MICHEAL A. NEAL 8 ASSOCIATES
Phone number 919-644-1277
Date February 1, 2012
Drainage area number 4
tl. DESIG IINF,ORM_ATION_
Site Characteristics
Drainage area 246,145 ft2
Impervious area 65,339 flz
Percent impervious 26.5% %
Design rainfall depth 1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 inlhr
Pre -development 1-yr, 24-hr peak flow
3,460 ft'/sec
Post -development 1-yr, 24-hr peak flow
0,000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-3.460 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
5,926.0 ft'
Volume provided
6,002.0 ft'
OK
Storage Volume: SA Waters
1.5' runoff volume
ft'
Pre -development 1-yr, 24-hr runoff
W
Post -development 1-yr, 24-hr runoff
ff'
Minimum volume required
0It'
Volume provided
ft'
Cell Dimensions
Fording depth of water
12 inches
OK
Fording depth of water
1.00 ft
Surface area of the top of the bioretention cell
6,000.0 ftz
OK
Length:
86 It
OK
Width:
58 ft
OK
-or- Radius
ft
Media and Soils Summary
Drawdown time, ponded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK
Drawdown time, total:
24 hr
In -situ soil:
Soil permeability
2,50 in/hr
OK
Planting media soil..
Soil permeability
2.00 in/fir
OK
Soil composition
• Sand (by volume)
85%
OK
• Fines (by volume)
10%
OK
• Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Form SW401-Bioretention-Rev.B
June 25, 2010
Parts I and H. Design Summary, Page 1 of 2

�ffPermit Number W W-
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
431.00 fmsl
Type of bioretention cell (answer "Y' to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
y (Y or N) OK media depth
Planting elevation (top of the mulch or grass sod layer)
430 fmsl
Depth of mulch
4 inches OK
Bottom of the planting media soil
426 fmsl
Planting media depth
4 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
n (Y or N)
How many clean out pipes are being installed?
NIA OK
What factor of safety is used for sizing the underdrains? (See
NIA Insufficient factor of safety.
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
0 it
the bottom of the cell to account for underdrains
Bottom of the cell required
425.67 fmsl
SHWT elevation
405 fri
Distance from bottom to SHWT
20.67 ft OK
Internal Water Storage Zone (IWS)
Does the design include IWS
n (Y or N)
Elevation of the top of the upturned elbow
nla fmsl
Separation of IWS and Surface
#VALUE! it #VALUE!
Planting Plan
Number of tree species
3
Number of shrub species
3
Number of herbaceous groundcover species
3 OK
Additional Information
Does volume in excess of the design volume bypass the
N (Y or N) Excess volume must bypass cell.
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
N (Y or N) Excess volume must pass through filter— fv"�
through a vegetated filter?
��\\
What is the length of the vegetated filter?
it V
Does the design use a level spreader to evenly distribute flow?
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Are the vegetated side slopes equal to or less than 3:1?
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
Is the area surrounding the cell likely to undergo development in
the future?
Are the slopes draining to the bioretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X' in the shaded cell)
Gravel and grass
(8inches gravel followed by 3-5 it of grass)
Grassed Swale
Forebay
Other
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
NIA fUsec Insufficient inlet velocity unless energy dissipating devices are
being used.
N Y or N) OK
n (Y or N) OK
Y (Y or N) OK
X
OK
Form SW401-Bioretenlion-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 2

®wn
NCDENR
Permit Number' (1 065�
(to be Provided by DWQ)
op WATEq
> � r
O Y
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I1P,R08EC-AINF,ORMATION f $k3xe, r.:- «., '•i' ;
Project name TYLER'S RIDGE AT SANDHILLS
Contact name BENJAMINLENNON-MICHEALA NEAL&ASSOCIATES
Phone number 919-644-1277
Date February 1, 2012
Drainage area number 5
Drainage area
93,648 ftZ
Impervious area
42,913 ftZ
Percent impervious
45.8%
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
3.09 in
1-yr, 24-hr intensity
0.129 in/hr
Pre -development 1-yr, 24-hr peak flow
2.470 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.000 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-2.470 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
3,609.0 ft'
Volume provided
3,650.0 ft'
OK
Storage Volume: SA Waters
1.5' runoff volume
ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
0 ft'
Volume provided
ft'
Cell Dimensions
Fording depth of water
12 inches
OK
Fording depth of water
1.00 It
Surface area of the top of the bioretention cell
3,650.0 ftZ
OK
Length:
32 ft
OK
Width:
28 It
OK
-or- Radius
ft
Media and Soils Summary
Drawdown time, ponded volume
6 hr
OK
Drawdown time, to 24 inches below surface
18 hr
OK
Drawdown time, total:
24 hr
In -situ soil:
Soil permeability
2.50 in/hr
OK
Planting media soil.
Soil permeability
2.00 in/hr
OK
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
10%
OK
% Organic (by volume)
5%
OK
Total: 100%
Phosphorus Index (P-Index) of media
20 (unitless)
OK
Farm SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 2

Permit Number "V 60066-'—
(to be pro.ded by DWQ)
Basin Elevations
Temporary pool elevation
403.00 fmsl
Type of bioretention cell (answer'?" to only one of the two
following questions):
Is this a grassed cell?
n (Y or N)
Is this a cell with trees/shrubs?
y (Y or N)
OK media depth
Planting elevation (top of the mulch or grass sod layer)
403 fmsl
Depth of mulch
4 inches
OK
Bottom of the planting media soil
399 fmsl
Planting media depth
4It
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
n (Y or N)
How many clean out pipes are being installed?
N/A
OK
What factor of safety is used for sizing the underdrains? (See
N/A
Insufficient factor of safety.
BMP Manual Section 12.3.6)
Additional distance between the bottom of the planting media and
0 it
the bottom of the cell to account for underdrains
Bottom of the cell required
398.67 fmsl
SHWT elevation
395 fmsl
Distance from bottom to SHWT
3.67 it
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
n
(Y or N)
Elevation of the top of the upturned elbow
n/a fmsl
Separation of IWS and Surface
#VALUE!
ft
#VALUE!
Planting Plan
Number of tree species
3
Number of shrub species
3
Number of herbaceous groundcover species
3
OK
Additional Information
Does volume in excess of the design volume bypass the
N
(Y or N)
Excess volume must bypass cell.
bioretention cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
— )%J1t,'
through a vegetated filter?
What is the length of the vegetated filter?
ft
�/�
6 ttv
Does the design use a level spreader to evenly distribute Flow?
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if
Y
(Y or N)
OK
SA waters)?
Is the BMP located at least 100 feet from water supply wells?
Y
(Y or N)
OK
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
OK
Is the BMP located in a proposed drainage easement with access
Y
(Y or N)
OK
to a public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A fUsec
Insufficient inlet velocity unless energy dissipating
devices are
being used.
Is the area surrounding the cell likely to undergo development in
N
(Y or N)
OK
the future?
Are the slopes draining to the bioretention cell greater than 20%?
n
(Y or N)
OK
Is the drainage area permanently stabilized?
Y
(Y or N)
OK
Pretreatment Used
(Indicate Type Used with an'X' in the shaded cell)
Gravel and grass
(flinches gravel followed by 3-5 It of grass)
Grassed Swale
OK
Forebay
X
Other
Form SW401-Biorelemion-Rev.9
June 25, 2010 Parts I and II. Design Summary, Page 2 of 2

Permit Number: 51--kI1005�
(Io be provided by DWQ)
Drainage Area Number: J-
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will be taken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element.
Potential roblems:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
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.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or Swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form S W401-Bioretention O&M-Rev.3 Page I of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
hies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has Floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum de th of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of property and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site.
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form S W401-Bioretention O&M-Rev.3 Page 3 of 4

Perrmt Number. Sw(OIJ( Q5—
(r(be provided by DWO)
1 acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. 1 agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:TYLERS RIDGE AT SANDHILLS
6MP drainage area
Print name: Tylerls Rkel%. Pam. 1.... LLC
Note: "rhe 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.
a Notary Public for the State of
of ` do hereby certify that /
personally appeared before me thisoL
of �r1�yr rl�CdI Z / , and acknowledge the due execution of the
bioretention maintenance requirements. Witness my hand and official seal,
SEA
My commission expires P %`o 1?0A3
Form SW401-Bioretention I&M-Rev.2 Page of

Permit Number:
(to be provided by DWQ)
Drainage Area Number: J-
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important operation and maintenance procedures:
— Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
— Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
— Heavy equipment will NEVER be driven over the bioretention cell.
— Special care will betaken to prevent sediment from entering the bioretention cell.
— Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of 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.
Potentialproblems:
How 1 will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
bioretention cell
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.
The inlet device: pipe,
The pipe is clogged (if
Unclog the pipe. Dispose of the
stone verge or swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
Swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Stone verge is clogged or
Remove sediment and clogged
covered in sediment (if
stone and replace with clean stone.
applicable).
Form S W401-Bioretention O&M-Rev.3 Page I of 4

BMP element:
Potentialproblems:
How 1 will remediate theproblem:
The pretreatment area
Flow is bypassing
Regrade if necessary to route all
pretreatment area and/or
flow to the pretreatment area.
gullies have formed.
Restabilize the area after grading.
Sediment has accumulated to
Search for the source of the
a depth greater than three
sediment and remedy the problem if
inches.
possible. Remove the sediment and
restabilize the pretreatment area.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand.
The bioretention cell:
Best professional practices
Prune according to best professional
vegetation
show that pruning is needed
practices.
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planting.
can kill the tree if not removed).
The bioretention cell:
Mulch is breaking down or
Spot mulch if there are only random
soils and mulch
has Floated away.
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Soils and/or mulch are
Determine the extent of the clogging
clogged with sediment.
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off -site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
An annual soil test shows that
Dolomitic lime shall be applied as
pH has dropped or heavy
recommended per the soil test and
metals have accumulated in
toxic soils shall be removed,
the soil media.
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 0l 4

BMP element:
Potentialproblems:
How I will remediate theproblem:
The underdrain system
Clogging has occurred.
Wash out the underdrain system.
if applicable)
The drop inlet
Clogging has occurred.
Clean out the drop inlet. Dispose of
the sediment off -site -
The drop inlet is damaged
Repair or replace the drop inlet.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form S W40I-Bioretention O&M-Rev.3 Page 3 of 4

Permit Number:
(to he provided by DWQ)
1 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:TYLERS RIDGE AT SANDHILLS
6MP drainage area nuniber:5
Print name:
SZOO W&-&%
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.
a Notary Public for the State of
of` do hereby certify that /
personally appeared before me this �oL
day of �efl�y[�lG�L�� /,.), and acknowledge the due execution of the
bioretention maintenance requirements. Witness my hand and official seal,
* 1 ( CAROLJ.
MUELLER
My commission expireso
Form SW401-Bioretention I&M-Rev.2 Page of