SW6140101_CURRENT PERMIT_20140131

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

AAAw r
NC®ENR
North Carolina Department of Environment and Natural Resources
Division of Energy, Mineral, and Land Resources
Tracy E. Davis, PE, CPM
Director
January 31, 2014
Mr. David Heins
Environmental Division Chief (DPW)
Directorate of Public Works (DPW)
2175 Reilly Road, Stop A
Fort Bragg, North Carolina 28310-5000
Subject: Stormwater Permit No. SW6140101
SOF Brigade Headquarters Facility (Roadway)
Dear Mr. Heins:
Pat McCrory, Governor
John E. Skvarla, III, Secretary
F E B 4 2014
The Stormwater Program under the Division of Energy, Mineral, and Land Resources (DELMR),
received a complete Stormwater Management Permit Application for the subject project. 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 and Session I..aw 2006-246,
We are forwarding Permit No. SW6140101, dated January 31, 2014, for the construction, operation
and maintenance of the subject project and the stormwater BMPs. This permit shall be effective
from the date of issuance until January 30, 2022 and shall be subject to the conditions and
limitations as specified therein, and does not supersede any other agency permit that may he
required.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing by filing a written petition with the Office of Administrative
Hearings (OAH). The written petition must conform to Chapter 150B of the North Carolina General
Statutes. Per NCGS 143-215(e) the petition must be filed with the OAH within thirty (30) days of
receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a
filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh,
NC 27699-6714, or via telephone at 919-431-3000, or visit their website at www.NCOAH.com.
Unless such demands are made this permit shall be final and binding.
This project will be kept on file at the Fayetteville Regional Office. If you have any questions, or
need additions! information concerning this matter, please contact Mike Randall at (919) 807-
6374; or mike.randallCncdeiu-.gov.
Sincerely,
or Tr cy E. Davis, PECPM, Director
cc: SW3130702 File, Fayetteville Regional Office
ec: Lee Ward, DPW Water Management Branch
Jonathan Allen, PE, Stantec Consulting Services Inc.
Geological Survey Section • Land Quality Section
1612 tAail Service Center, Raleigh, North Carolina 27699-1612.919-707-9200 / FAX: [phone]
512 North Salisbury Street, Raleigh, North Carolina 27604 • Internet: htt :1/ ortaLncdenr.org/web/Ir/
An Equal Opportunity 1 Affirmative Action Employer- 50% Recycled 110% Post Consumer Paper

State Stormwater Permit
Permit No. SW6140101
STATE OF NORTH CAROLINA
DEPARTMENT.OF ENVIRONMENT AND NATURAL RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
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
Fort Bragg
SOF Brigade Headquarters Facility (Roadway)
Cumberland County
FOR THE
construction, operation and maintenance of 33 bio-retention cells in compliance with the
provisions of Session Law 2006-246 and 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 State and considered a part of this permit..
This permit shall be effective from the date of issuance until January 30, 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.
2. The bio-retention cells are approved for the management of stormwater runoff as
described in the application documents and as shown on the approved plans.
All storrwater 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.
4. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitter; stormwater control system.
5. The built -upon areas associated with this project shall be !ocated at least 30 feet
landward of all perennial and intermittent surface waters.
Page 1 of 4

State Stormwater Permit
Permit No. SW6140101
II. SCHEDULE OF COMPLIANCE
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
2. The permittee shall at all time provide the operation and maintenance necessary
to assure the permitted bio-retention cells 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 rernoval.
C. Mowing and re -vegetation of slopes and the tilter strip.
d. Immediate repair of eroded areas.
e. Maintenance of ail slopes in accordance with approved pians.
F. Debris removal and unclogging of all drainage structures, level spreader,
filter media, planting media, underdrains, catch basins and piping.
Q. Access to the cell and outlet structure must be available at all times.
Records of maintenance activities must be kept for each permitted BMP. The
reports will indicate the date, activity, name of person performing the work and
what actions were taken.
4. The permittee shall submit an annual summary report of the maintenance and
inspection records for each bio-retention cell. The report shall summarize the
inspection dates, results of the inspections, and the maintenance work
performed at each inspection.
5. The bio-retention cells shall be constructed in accordance with the approved
plans and specifications, the conditions of this permit, and with 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 bio-retention cells 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.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
o. T're permittee shall submit to t e Director and shall have received approval for
revised plans, specifications, and calculations prior tc 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 Sedimentation and Erosion- Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
Page 2 of 4

State Stormwater Permit
Permit No. SW6140101
9. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of eight years from the date of the completion of
construction.
10. 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 formodifying 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.
III. GENERAL CONDITIONS
1. This pear it is not transferable except after notice io and approvai by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a completed Name/Ownership Change form signed by both parties, to the
State, accompanied by the supporting documentation. The approval of this
request will be considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves a request to transfer the permit.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the State, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
4. 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.
5. 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.
6. 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.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and re -issuance or
termination does not stay any permit condition.
6 Unless specified elsewhere, permanent sending requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in Session Law 2006-
246, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
Page 3 of 4

State Stormwater Permit
Permit No. SW6140101
11. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes at least 30 days prior to making such changes.
12. The permittee shall submit a renewal request with all required forms and
documentation at least 180 days prior to the expiration date of this permit.
Permit issued this the 31st day of January, 2014.
Director Division of Energy, Mineral, and Land Resources
Page 4 of 4

State Stormwater Permit
Permit No. SW6140101
Fort Bragg
SOF Brigade Headquarters Facility (Roadway)
Cumberland County
Designer's Certification
I, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodicaljyr weekiy/
full time) the construction of the project,
(Project Name)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation, of the proiect
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
cc: NCDENR-DEMLR Regional Office
Page 1 of 1

DWQUSEONLY.
Date Received
Fee ['aid
Permit Number
GLS
1 SW6( Ut0
Applicable Rules: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- FIQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ M mt Plan:
State of North Carolina
Department of Environment and Natural Reso
Division of Water Quality 0
Ll
STORMWATER MANAGEMENT PERMIT APPLICA ON FORM
This form may he photocopied for use as an original BAN 0 2014
I. GENERAL INFORMATION (ghrpS�pWAT"�gQOALt
1. Project Name (subdivision, facility, or establishment name -should be consistent witH on plans,
specifications, letters, operation and maintenance agreements, etc.): N
SOP Brieade Headouarters Facility (Roadwav) (PN 69758
2. Location of Project (street address):
Chicken Road and Ammo Point Blvd., intersection of existing'B' and 'G' streets
City:Fort Bragg County:Cumberland Zip:28314
3. Directions to project (front nearest major intersection): FEB 4 2014
Located south of Fort Bragg.
4. Latitude:35° 4' 40.00" N Longitude:790 1' 49.00" W of the main entrance to the project.
if. PERMIT INFORMATION
1. a. Specify whether project is (check one): ®New ❑Modification ❑ Renewal w/ Modificationt
tRcncroals With nmdificalious also requires SWU-102 - Reuetnal Application Forni
b.If this application is being submitted as the result of a modification to an exisfing permit, list the existing
permitnumberN/A , 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 ®1-ligh 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, N/A 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):
❑CAMA Major ®Sedimentation/ Erosion Control: 22.10 ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
b.lf any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permitTroiect Name: FB-SOF Headquarters Facility (PN 69758)-Roadway,
Proiect ID: CUMBE-2014-057, Permit Number: NPDES General Stormwater Permit NCG010000, Approval
5. Is the project located within 5 miles of a public airport? ❑No ❑Yes
If yes, see S.L. 2012-200, Part VI: littl2://portal.ncdenr.org/wcblwQ/WS/SLi/­statesw/rules laws
FormSWU-101 Version06Aug2012 Page Iof6

III. CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the nroiect):
Applicant/Organization: Directorate of Public Works (DPW)
Signing Official & Title: Mr. David Heins, Environmental Division Chief (DPW)
b.Contact information for person listed in item la above:
Street Address: 2175 Reilly Road Stop A
City: Fort Bragg State: NC "Zip: 28310-5000
Mailing Address (if applicable): 2175 Reilly Road Stop A
City: Fort Bragg; State: NC Zip: 29310-5000
Phone: (910 ) 396-8207 Fax: (910 ) 907-2420
Email: david.a.heins.civaOmail.mil
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. (This is the
person who owns the property that the project is located on):
Property Owner/1
Signing Official &
b.Contact information for person listed in item 2a above:
Street Address:
State: Zip:
Mailing Address (if applicable):
City:
Phone: ( ) Fax:
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: Mr. Lee Ward
Signing Official & Title: DPW / Water Management Branch
b. Contact information for person listed in item 3a above:
Mailing Address: Bldg 2175 Reilly Road Stop A
City: Fort Bragg State: NC Zip: 28310-5000
Phone: (910 ) 396-2301 Fax: (910 ) 907-2420
Email: [e-mail]
4. Local jurisdiction for building permits:
Point of Contact: Phone #:
Form S WU-101 Version 06Aug2012 Page 2 of 7

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Stormwater runoff from new impervious areas will be treated by the implementation of bioretention areas
(Ditches A thru D BMP I & BMP 1B) within the road -side ditches and a detention pond (Pond-02) to
reduce post -development flows The bioretention areas within the road -side ditches contain weirs to assist in
reducing post-develeopment Flows.
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 PU D Approval Date:
❑ Valid Building Permit - Issued Date:
❑ Other: Date:
b.If claiming vested rights, identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW - 1995 ❑ Ph 11- Post Construction
3. Stormwater runoff from this project drains to the
4. Total Property Area: 22.65 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`: 22.65 acres
Total project area shrill be calculated to exclude the follovvin fire normal Dot of impounded structures, the area
0
between the banks of streams and rivers, the area below the orrnal Higgh ater (N line or Mean High Water
(MHW) line, and coastal wetlands lrnduurrd from the NIIW (or MHW) line. The resultant project area is used to
ealerilate overall percent built upon area (BUA). Non -coastal wetlmrds Iandvunrd of t{re NHW (or MHW) line ruay
be included in tire total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 53 %
9. How many drainage areas does the project have?2 (For high density, court 1 for each proposed engineered
storrn(vater BMP. For low density and other projects, rise 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 06Aug2012 Page 3 of 7

Basin Information
Drainage Area
A02
Drainage Area
A03
Drainage Area
A04
Drainage Area
A05
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Bones Creek
Stream Class
C
C
C
C
Stream Index Number*
18-31-24-2
18-31-24-2
18-31-24-2
18-31-24-2
Total Drainage Area (so
160,301
304,049
233,046
7,405
On -site Drainage Area (so
46,609
37,462
55,752
7,405
Off -site Drainage Area (so
113,692
266,587
177,289
0
Proposed Impervious Area`* (s
20,909
14,375
20,909
2,178
Impervious Area** total
130/6
5%
9%
29%
.Impervious" Surface Area
Drainage Area
A02
Drainage Area.
A03
Drainage Area
A04
Drainage Area
A05
On -site Buildings/Lots (so
0
0
0
0
On -site Streets (so
7,138
10,792
12,316
1,349
On -site Parking (sf)
0
0
0
0
On -site Sidewalks (sf)
1,542
2,179
3,860
517
Other on -site (so
468
1,404
1,248
312
Future (sf)
0
0
0
0
Off -site (so
11,761
0
3,485
0
Existing BUA*** (sf)
0
0
0
0
"Total (so:
1 20,909
14,375
20,909
2,178
" Stream Class and Index Number can be determined at: lit Ip://portal.nrdenr.nrg rnrbfrnq(ps/csu/dnssificutions
*" Impervious area is defined as the ]milt upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Report only that nruount ofeaisting BLIA that will remain after development. Do not report any existing BUA that
is to be. removed and which will be replaced by new BUA.
11. 1-low was the off -site impervious area listed above determined? Provide documentation.
Pro iects in Union County: Contact DIYO Central Office staff to check if the project is located nrithin a Threatened &
Endangered Species watershed that may be subject to more .stringent stormnrater requirements as per 15,1 AICAC 02B .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://12ortil.ncdcnr.ore/web/wq/ws/su/bop-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 from http://L)ortal.ncdenr.org/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 athttp://Liortal.nccienr.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 littp://portal.ncdennorg/web/wq/ws/s i/statesw/forms does.
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and oue copy of the signed and notarized Deed Restrictions &Protective Covenants 41/a
Donn. (iff the required pl ccr Part Vll bmen
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M
agreement(s) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to
http://www.envhelp.org/pages/onestopexpress.hmil for information on the Express program
Form S WU-101 Version 06Aug2012 Page 4 of 7

and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meetihg.)
5. A detailed narrative (one to two pages) describing the stormwater treatinent/managementfor 04
the project. This is required in addition to the brief summary provided in the Project 97
Information, item 1.
6. A USCS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within'/2 mile of the site boundary, include the 1/2
mile radius the map.
7. Sealed, signed
and dated calculations (one cop}')
8. Two sets of plans folded to 8.5" x'14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. 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 NI-IW line of tidal
waters, and any coastal wetlands landward of the MI-IW or NI-iW 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 13UA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. 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 SFI WT elevations (Please identify--✓j,/f,[�[j_—
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"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration 13MPs, 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 nsite visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: Page No:
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC
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 15A NCAC 21-1.1003(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.
htty://www.secretiry.state.nc us/Corporafions/`CSearch.aspx
Form SWU-101 Version 06Aug2012 Page 5 of 7

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
httlr//I)ortal.ncdenr.org/web/req/ws/su/st,ltesw/forms dots. 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.
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
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: Ionathan A. Allen, PE
Consulting Firm: Stantec Consulting Services Inc., formerly Greenhorne & O'Mara
Mailing Address:5565 Centerview Drive, Suite 107
City:Raleigh State:NC Zip:27606
Phone: (919 ) 851-1919 Fax: (919 ) £51-6393
Eniail:qc)iiitliai)[e-mail]
IX. PROPERTY OWNER AUTHORIZATION (if Coronet Inforrnation, item 2 has been filled out, cornplete this
section)
I, (print or l ype name of person listed in Contac(Infornnrtion, item 2n) certify that 1
own the property identified in this permit application, and thus give permission to (print or type mane of person
listed in Contact Inforuralion, item 1a) with (print or type mmne of organization listed in
Contact Inforrnation, item ln) 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.
Form S W U-101 Version 06Aug2012 Page 6 of 7

As the legal property owner 1 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. I 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 assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Da
a Notary Public for the State of Count}' of
do hereby certify that
before me this _ day of
personally appeared
and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
X. APPLICANT'S CERTIFICATION
1, (print or type mmne of person listed in Contact Information, item la) Mr. David Heins
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwater ruji under 1,5A NCAC 2H .1000 and any other applicable state stormwater requirements.
Date: iz1.� r3
I, a Notary Public for the State of County of
do hereby certify that personally appeared
before me this _ day of and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Form SWIJ-101 Version 06Aug2012 Page 7 of 7

Additional Basin Information (Item V,10)
Basin Information .
Drainage Area'
A06
Drainage Area
BOI
Drainage Area
B02
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Stream Class *
C
C
C
Stream Index Number
18-31-24-2
18-31-24-2
18-31-24-2
"Total Drainage Area (so
14,810
40,075
40,511
On -site Drainage Area (so
14,810
40,075
40,511
Off -site Drainage Area (so
0
0
0
Proposed Impervious Area ** s
5,227
15,682
13,068
% Impervious Area ** total
35%
39%
32%
Impervious** Surface Area
...
Drainage Area ,,"
A06 :.
Drainage Area'
, BOl
Drainage Area
B02 '. ..
On -site Buildings/Lots (so
0
0
0
On -site Streets (so
2,896
13,295
10,870
On -site Parking (so
0
0
0
On -site Sidewalks (so
1,090
1,763
1,574
Other on -site (so
1,241
624
624
Future(so
0
0
0
Off -sites
0
0
0
ExistingBUA*** s
0
0
0
Totals :'1
5,227
15,682
13,O6S
'Basin•Infonnation "•'
Drainage Area,. -
B03
Drainage Area
B04
Drainage Area
B05
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Stream Class *
C
C
C
Stream Index -Number *
18-31-24-2
18-31-24-2
18-31-24-2
Total Drainage Area (so
90,605
91,476
15,682
On -site Drainage Area (so
33,541
40,075
9,148
Off -site Drainage Area (so
57,064
51,401
6,534
Pro osed Impervious Area ** s
14,375
13,504
2,6
Im ervious Area ** total
16%
15%
17%14
Impervious** Surface Area
-
Drainage Area ^.
B03 °
• Drainage Area
.B04
'Drainage Area
... ,B05
On -site Buildings/Lots (so
0
0
0
On -site Streets (so
9,741
10,241
1,922
On -site Parking (so
0
0
0
On -site Sidewalks (so
2,268
2,483
536
Other on -site (sO
624
780
156
Future s
- 0
0
0
Off -site (so
1,742
0
0
Existing BUA***(so
0
0
0
Totals :
14,375
13,504
2,614

Basin Information
Drainage Area -
1306
Drainage Area,
B07
Drainage Area
COI
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Stream Class *
C
C
C
Stream Index Number
18-31-24-2
18-31-24-2
18-31-24-2
Total Drainage Area (so
40,947
41,817
5,663
On -site Drainage Area (SO
26,572
32,234
5,663
Off -site Draina e Area s
74,375
9,583
0
Proposed Im ervious Area ** s
16,117
6,098
1,742
% Impervious Area ** total
39%
15%
31%
Impervious** Surface Area,
Drainage Area
B06
Drainage Area
B07
.Drainage Area
C01
On -site Buildings/ Lots (sO
0
0
0
On -site Streets (so
4,712
4,417
1,376
On -site Parking (so
0
0
0
On -site Sidewalks (so
1,452
1,681
366
Other on -site (so
1,241
0
0
Futures
0
0
0
Off -sites
8,712
0
0
Existing BUA*** s
- 0
0
0
Totals
16,117
1 6,098
1 1,742
Basin information
- Drainage Area
CO2
Drainage Area
CO3
Drainage Area
C04
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Stream Class *
C
C
C
Stream Index Number
18-31-24-2
18-31-24-2
18-31-24-2
Total Drainage Area (so
14,810
26,136
77,973
On -site Drainage Area (so
14,810
26,136
44,867
Off -site Drainage Area (so
0
0
33,106
Proposed Impervious Area (so
8,276
14,375
16,553
% Impervious Area ** total
56%
55%
21 %
,Imp ervious**,Surface Area
Drainage Area ,
Drainage Area'.'
Drainage Area
On -site Buildings/Lots (so
0
0
0
On -site Streets (so
7,533
12,491
12,224
On -site Parking (so
0
0
0
On -site Sidewalks (so
743
1,260
3,393
Other on -site (so
0
624
936
Futures
0
0
0
Off -site (so
0
0
0
Existin BUA***(so
0
0
0
Totals
8,276
1 14,375
1 16,553

,Basin Information '''
' -
`,Drainage Area'.
DM
Drainage. Area
D03
Drainage Area'
D04
Receiving Stream Name
Bones Creek
Bones Creek
Bones Creek
Stream Class *
C
C
C
Stream Index Number
18-31-24-2
18-31-24-2
18-31-24-2
Total Drainage Area (so
27,007
202,118
154,203
On -site Drainage Area (so
19,602
1 36,590
14,375
Off -site Drainage Areas
7,405
165,528
139,828
Proposed Impervious Area ** s
6,971
13,504
23,522
Impervious Area** total
26%
70/.
15%
Impervious** Surfaee•Area ',; • .
: Drainage Area
D02
Drainage Area
D03
Drainage Area
D04
On -site Buildings/Lots (so
0
0
0
On -site Streets (so
3,673
8,741
4,594
On -site Parking (so
0
0
0
On -site Sidewalks (so
807
2,397
1,068
Other on -site (so
312
624
0
Future (so
0
0
0
Off -site (so
2,178
1,742
17,860
Existing BUA*** s
0
0
0
Totals
6,970
1 13,504
23,522
Basin Information
- Drainage Area
D05
Drainage Area
D06
Receiving Stream Name
Bones Creek
Bones Creek
Stream Class *
C
C
Stream Index Number
18-31-24-2
18-31-24-2
Total Drainage Area (so
155,945
151,599
On -site Drainage Area (SO
18,731
47,916
Off -site Drainage Area (so
37,214
103,673
Proposed Impervious Area (so
26,572
35,719
Impervious Area ** total
17%
24
Impervious** Surface Area
Drainage Area
D05
Drainage Area
D06
On -site Buildings/ Lots (so
0
0
On -site Streets (so
6,880
15,787
On -site Parking (so
0
0
On -site Sidewalks (so
1,208
3,314
Other on -site (so
624
936
Future (so
0
0
Off -site (so
17,860
15,682

Existing BUA*** s
0
0
Totals
26,572
1 35,719

Permit Number:
n /�Z (to be provided by DWD)
J �gcWA�7—FA
"*'
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 SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Dale December 6, 2013
Drainage area number Ditch D06c
II. DESIGN INFORMATION
Site Characteristics
Drainage area
16,117.ft2
Impervious area
6,534 ft3
Percent impervious
40 5% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is prelpost control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
0.499 in
1-yr, 24-hr intensity
0A 28 in/hr
Pre -development 1-yr, 24-hr peak flow
1.264 ft3lsec
Post -development 1-yr, 24-hr peak flow
0.214 ft3lsec
Pre/Post 1-yr, 24-hr peak control
-1.050 ft3lsec
Storage Volume: Non-SAWaters
Minimum volume required
-882.1 ft3
Volume provided
787.0.it'
OK
Storage Volume: SA Waters
F E g 4 2014
1.5" runoff volume
NIA rya
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3,
Minimum volume required
NIA rya
Volume provided
NIA ft3
OK
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
1,795.0 ftz
OK
Length:
135 it
OK
Width:
30 it
OK
-or- Radius
N/A it
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil.:
Soil permeability
0.01inmr
Insufficient. Increase infiltration rate or includeunderdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelention-Rev.8
June 25, 2010
Pans I and 11. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (unilless)
Permit Number
(to be provided by D WQ)
Fonn SW401-Biorelention-Rev.8
June 25, 2010 Parts I and It. Design Summary, Page 2 of 3

Permit Number
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation 245.00 fmsl
Type of bloretention cell (answer Y' to only one of the two following .
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 244 fmsl
Depth of mulch NIA inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 242 frost
Planting media depth 2 it
Depth of washed sand below planting media soil 0.33 It
Are underdrains being installed? -
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
240.67 fmsl
SHWT elevation
234.6 fmsl
Distance from bottom to SHWT
6.07 it
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
244 It
Planting Plan
Number of Gee species
NIA
Number of shrub species
NIA
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA ft
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
NIA ft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
N/A
(B'inches gravel followed by 3-5 ft of grass)
Grassed Swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-131oretenton-Rev.8
June 25, 2010 Pans I and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWQ)
III:dREQUIREDUTEMS,'CHECKLIST _'
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No. -
�� CP201-CP206' 1. Plans (1"- 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis o - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 ---► - Clean out pipe locations,
- Overflow device, and
- Boundares of drainage easement.
S�_ CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
.
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —b.
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
T-rp _ C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, rill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
S Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index. .
"p
JLL N/A
c
5. A detailed planting plan 1"= 20' or larger) prepared h a qualified individual showing:
_ P 9P ( 9 )P P Y q 9
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _.
- The source nursery for the plants, and ,
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
—(-1-- Drainage
7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to he Provided by DWQ)
OF WA7(q
NCDENR
p�� 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 /I/) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch D06b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
16,117 ft2
Impervious area
6,534 ft'
Percent impervious
40.5% %
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
0.499 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
1.264 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.220 ff3/sec
Pre/Post 1-yr, 24-hr peak control
-1.044 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
-882.1 ft3
Volume provided
217.0 ft3 OK
Storage Volume: SAWaters
-
1.5'runoff volume
N/A ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
,
Minimum volume required
NIA ft3
Volume provided
N/A ft3 OK
Cell Dimensions
Pending depth of water
12 inches OK
4 ZOO¢
FEB
Pending depth of water
1.00 ft
Surface area of the top of the bioretention cell
2,028.0 ft' OK
Length:
150 ft OK
Width:
28 It OK
-or- Radius
N/A If OK
Media and Soils Summary
Drawdown time, penciled volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 fir
In -situ soil:
Soil permeability
0.01 in/hr Insufficient Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85% OK
Fines (by volume)
12% OK
Organic (by volume)
3% OK
Total: 100%
Form SW401-Biorelenlion-Rev.8
June 25, 2010
Parts I and IL Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (undless)
Permit
(to be provided by DWQ)
Form SW401-Biorelenlion-Rev.8
June 25, 2010 Paris I and 11. Design Summary, Page 2 of 3

Permit Number:
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
Type of bioretenlion cell (answer Y' to only one of the two following
questions):
Is this a grassed cell?
Is this a cell with lreeslshrubs?
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 bioretenlion
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)
Is the area surrounding the cell likely to undergo development in the
future?
Are the slopes draining to the biorelention 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
(8'inches gravel followed by 3-5 It of grass)
Grassed Swale
Forebay
Other
245.00 fmsl
Y (Y or N) OK
N (Y or N)
244 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
242 fmsl
2ft
0.33 ft
Y (Y or N)
3 OK
10 OK
1ft
240.67 fmsl
235.8 foist
4.87 It OK
N (Y or N)
fmsl
244 It
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA If
N (Y or N) Show how flow is evenly distributed.
Y (Y or N)
OK
Y (YorN)
OK
Y (Y or N)
OK
N (Y or N)
Insufficient ROW location.
N/A It/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
N (Y or N)
OK
N (YorN) OK
Y (Y or N) OK
NIA
X #VALUE!
Y
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and 1). Design Summary, Page 3 of 3

Permit No:.
(to be assigned by DWO)
III: d REQU IRED,'ITEMS'CH ECK LIST, -
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1' - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —► - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
-f-fl> 201-CP206-
2. Plan details IV=30'or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (RCW),
- Design at ultimate build -out,
-Off-site drainage (if applicable),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
y1� C-301
3. Section view of the bioretention cell (V = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Sioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
I f Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting sail and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
N/A _ 5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
�-l-1 Drainage 7. The supporting calculations (including underdrain calculations, if applicable)..
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by D WQ)
Qp WAq
�+ oQ0NCDENR
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
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Slantec
Phone number
919-325-4774
Dale
December 6, 2013
Drainage area number
Ditch D051b
II. DESIGN INFORMATION
Site Characteristics
Drainage area 9,583 ft3
Impervious area 4,356 11'
Percent Impervious 45.5%
Design rainfall depth 1.0 inch
Peak Flow Calculations
Is prelpost 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
Pending depth of water
Ponding depth of water
Surface area of the top of the bloretention 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 t
Soil permeability
Soil composition
Sand (by volume)
Fines (by volume)
Organic (by volume)
Y (Y or N)
0.899 in
0.128in/hr
1.287 ft3/sec
0.257 ft'/sec
-1.030 ft3/sec
-545.0 ft'
148.0 ft' OK
N/A ft3
ft3
ft3
N/A ft3
N/A ft3
6 inches
0.50 ft
608.0 It
85 It
30 ft
N/A It
hr
hr
0 fir
0.01 inter
in/hr
85%
12%
3%
Total: 100%
OK
Insufficient pending depth
OK
OK
OK
OK
-8 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 1 of 3

Permit
Phosphorus Index (P-Index) of media 20 (unitless)
(to be provided by DWD)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit
(to be provided by DWD)
Basin Elevations
Temporary pool elevation
243.60 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (lop of the mulch or grass sod layer)
243.1 fmsl
Depth of mulch
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
241.1 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
1
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 it
bottom of the cell to account for underdrains
Bottom of the cell required
239.77 fmsl
SHWT elevation
228.9 fmsl
Distance from bottom to SHWT
10.87 R
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the lop of the upturned elbow
fmsl
Separation of IWS and Surface
243.1 ft
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What Is the length of the vegetated filter?
N/A It
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly disMbuled.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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
NIA
(l gravel followed by 3-5 It of grass)
Grassed Swale X #VALUE!
Forebay Y
Other N/A
Form SW401-Bioretention-Rev.6
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
III.,,REQUIRED: ITEM&CHECKLAST:_'" w -_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
J_ CP201-CP206'1
Located in Drainage Analysis —►
Located on Sheet C-301 —►
Plans (1'- 50' or larger) of the entire site shoving:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
J_-[ CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301
Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
TT C-301 3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower -
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
gdit Drainage 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index..
N/A _ 5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A vanety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S'(p C-522 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
�i Drainage 7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

Permit Number.
t (to be provided by DWO)
OF WAT(q
®�
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 11l) must be printed, filled out and submitted along with all of the required information.
I:.P„ROJECTtINFORMATION�,'F* ! 's.�., e t-, .{�:'r x` x; u;'':�k: E, ..,c,. , r.* ;; .sa..rv. 9. .s �.z.. .. :'f,'dY' t•'''iia `"^, w"i; k"? 'i ��,3.:;!''i ; ':
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Slantec
Phone number 919-325-4774
Date December 6, 2013
Drainage area number Ditch D05a
II. DESIGN INFORMATION,
Site Characteristics
Drainage area 9,583 ft2
Impervious area 4,356 112
Percent impervious 45.5% %
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
0.849 in
1-yr, 24-hr intensity
0,128 in/hr
Pre -development 1-yr, 24-hr peak flow
1.287 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.253 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-1.034 ft3/sec
Storage Volume: Non -SA Waters
Minimum volume required
-545.0 ft3
Volume provided
150.0 ft3
OK
StomgeVolume: SAWaters
1.5" runoff volume
NIA rya
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
- NIA ft3
Volume provided
N/A ft3
OK
Cell Dimensions
Ponding depth of water
6 inches
Insufficient ponding depth.
Ponding depth of water
0.50 it
Surface area of the top of the bioretention cell
599.0 ft2
OK
Length:
265 ft
OK G 4 2�«
Width:
28 ft
OK �g
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
fir
Drawdown time, to 24 inches below surface
fir
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil.
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Pagel of 3

Permit Number.
(to be provided by DWD)
i
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Sioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number:
ti
(to be provided by D WO)
Basin Elevations
Temporary pool elevation 244.50 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 244 fmsl
Depth of mulch N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 242 fmsl
Planting media depth 2 ft
Depth of washed sand below planting media soil 0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
1
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
240.67 fmsl
SHWT elevation
239.6 fmsl
Distance from bottom to SHWT
1.07 ft
Insufficient distance to SHWT.
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
,
Separation of IWS and Surface
244 ft
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A fit
,
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feel if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 ft of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by D WQ)
III:dREQUIREDiITEMS!CHECKLIST _
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the suppoding documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent. the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans IV - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- 0f-site drainage (if applicable),
Located in Drainage Analysis — o -Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW).
Located on Sheet C-301 --► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
S--rf CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 --+
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement. -
- Indicate the P-Index between 10 and 30
T'-r C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Cram e
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.,
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
'
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Jar Drainage
7. The supporting calculations (including underdrain calculations, 4applicable).,
,1
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number'
(to be provided by DWQ)
c
® �
Op W AiE.qC
t QG
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 /I/) must be printed, filled out and submitted along with all of
the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
'
Phone number
919-325.4774
Date
December 6, 2013
Drainage area number
Ditch D03b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
18,295 ftz
Impervious area
6,098 ft'
Percent impervious
33.3% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is prelpost control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
0.899 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
1.225 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.514 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-0.711 ft3lsec
Storage Volume: Non-SAWaters
.
Minimum volume required
28.9 ft'
Volume provided
274.0 ft'
OK
Storage Volume: SA Waters
1.5" runoff volume
NIA ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft,
Minimum volume required
N/A ft'
Volume provided
N/A ft'
OK
Cell Dimensions
Ponding depth of water
_
6 inches
Insufficient ponding depth.
Ponding depth of water
0.50 ft
Surface area of the top of the bioretention cell
1,134.0 fit
OK F EB 4 2014
Length:
195 ft
OK
Width:
40 It
OK
-or- Radius
N/A It
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
'
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 inlhr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
infer
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
12% -
OK
% Organic (by volume)
3%
OK
Total: 10D%
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unipess)
Form SW401-Biorelenlion-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWO)
Basin Elevations
Temporary pool elevation
250.50 first
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
.Y
(Y or N)
OK
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
250 fmsl
Depth of mulch
N/A inches
Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
248 fmsl
Planting media depth
2 ft
'
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 tt
bottom of the cell to account for underdrains
Bottom of the cell required
246.67 fmsl
SHWT elevation
241.5 first
Distance from bottom to SHWT
5.171t
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
250 It
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A ft
Does the design use a level spreader to evenly distribute fiown
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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 N/A
(8'inches gravel followed by 3-5 ft of grass)
Grassed swale X #VALUE!
Forebay Y
Other WA
0
Form SW401-Biorelenlion-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No'
' (to be assigned by DWQ)
IIIidREQU1RED,ITEMS'-CHECKLIST;
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
GP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —►- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
S^[ __ CP201-CP206-
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
ITT C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Biorelention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), k57 stone, underdrains (if applicable),
SHWf level(s), and overflow s:ructurej
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing d submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (firi Results of soils tests of both the planting soil and the in
situ soil must include:
- Sail permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index..
N/A -
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S'rJ0 C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).
Analysis
8. A copy of the signed and notarized inspection and maintenance (AM) agreement.
9. A copy of the deed restriction.

Permit Number
(to be provided by DWD)
I Qp WAiFH
AA
NCDENR K
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.
1'PRO;IECTtINF,ORMATI0N W,
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-3254774
Date December 6, 2013
Drainage area number Ditch D03a
IL DESIGN INFORMATIONy %, '
Site Characteristics
Drainage area 18,295 it'
Impervious area 6,09E ft3
Percent impervious 33.3%
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
0.899 in
1-yr, 24-hr intensity
0.128 in/hr
-
Pre -development 1-yr, 24-hr peak flow
1.225 ft"/sec
Post -development 1-yr, 24-hr peak flow
0.514 fl3/sec
PrelPost 1-yr, 24-hr peak control
-0.711 ft3/sec
Storage Volume: Non -SA Waters
Minimum volume required
28.9'ft3
Volume provided
248.0 ff3
OK
Storage Volume: SAWaters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ff3
Volume provided
NIA it'
OK
Cell Dimensions
'
Pending depth of water
6 inches
Insufficient pending depth.
Pending depth of water
0.50 ft
'
Surface area of the top of the bioretention cell
1,075.0 e
OK
Length:
205 it
OK
Width:
32 It
OK -r 6 4 2014
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
inmr
Soil composition
Sand (by volume)
85%
OK '
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelention-Rev.8
June 25, 2010
Parts 1 and II. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (uniUess)
Form SW401-Bioretenlion-Rev.8 -
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number
-
(to be provided by DWO)
Basin Elevations
Temporary pool elevation 251.50 first
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 251 fmsl
Depth of mulch N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 249 fmsl
Planting media depth 2 ft
Depth of washed sand below planting media soil 0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
247.67 fmsl
SHWT elevation
243.9 fmsl
Distance from bottom to SHWi
3.77 ft
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the lop of the upturned elbow
first
Separation of IWS and Surface
251 It
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA ft
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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
N/A
(8*inchesgravel followed by 3-5 ft of grass)
Grassed swale X #VALUE!
Forebay Y
Other N/A
Form SW401-Biomlenlion-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

pennir No:
` (to be assigned by DWQ)
I10REQUIREDOEMS(CHECKL'IST
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis --► -Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 ---► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
STP-- CP201-CP206' 2. Plan details (1" = 30' or larger) for the biorelention cell showing:
Plans are at 1"=40' scale due - Cell dimensions
to large number of ditches - Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 --* - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301 3. Section view of the biorelention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underlain system (if applicable), and
- Biorelention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
rr SHWT level(s), and overflow structure]
J Drainage 4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fri Results of soils tests of both the planting soil and the in
situ soil must include'.
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index.
N/A 5.1 A detailed planting plan It 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST>D C-522 6. A construction sequence that shows how the biorelention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage 7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
- 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to be provided by DWQ)
WATE_ p
A 9 C
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 I//) must be printed, filled out and submitted along with all of the required information.
PROJECT::.INFORMATION."m,...,"" 9:.«_W„-i'••p!, �.,r s`'si.. t,r_�>,.f..:.7��,"ls`'?.:.wokw'�z's�r
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Dale December 6, 2013
Drainage area number Ditch D02
u
IL; DESIGN,INFORMATION�,;,,,,x�-
Y,
Site Characteristics
Drainage area 6,534 ft'
Impervious area 2,178 ft'
Percent impervious 33.3% %
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
0.8 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.484111
Post -development 1-yr, 24-hr peak flow
0,484 ft'/sec
Pre/Post 1-yr, 24-hr peak control
0.000 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
225.3 ft'
Volume provided
746.0 ft'
OK
StomgeVolume: SAWaters
1.5' runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft'
,
Post -development 1-yr, 24-hr runoff
ft'
Minimum volume required
N/A ft'
Volume provided
N/A ft'
OK .
Cell Dimensions
Ponding depth of water
12 inches
OK
4
Ponding depth of water
1.00 ft
C 8 2014
Surface area of the top of the bioretenlion cell
1,515.0 ft'
OK
Length:
100 ft
OK
Width:
30 it
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
-
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient, Increase infiltration rate or include underdrains.
Planting media soil.'
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Porn SW401-Bioretention-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Permit Number:
(to he provided by DWO)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SMN-Bioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number
(to be provided by D WQ)
Basin Elevations
Temporary pool elevation
253.40 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
252.4 fmsl
Depth of mulch
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
250.4 fmsl
Planting media depth
2 fl
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
249.07 fmsl
SHWT elevation
245 fmsl
Distance from bottom to SHWT
4.07 fl
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
252.4 it
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
_
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A ft
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
future?
Are the slopes draining to the bioretention cell greater than 20%?
N
(Y or N)
bK
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'
NIA
(B'inches gravel followed by 3-5 fl of grass)
Grassed swate
X
##VALUE!
Forebay
Y
Other
N/A
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

Permit No:
• (to be assigned by D WQ)
III:dREQUIRED,'ITEMS;CHECKL'IST —
*NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —► - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 --► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
S> CP201-CP206' 2. Plan details (1'= 30' or larger) for the bioretention cell showing:
Plans areal 1 "=40' scale due - Cell dimensions
to large number of ditches - Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --* - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
rQ C-301
3. Section view of the bioretention cell (1"= 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
it Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fri Results of soils tests of both the planting soil and the in
situ soil must include'.
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
N/A
5, A detailed planting plan (1" = 20' or larger) prepared by a qualified Individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer -and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
l-1 Drainage
7. The supporting calculations (including underdrain calculations, 4 applicable),.
Analysis
- _
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number
(to be provided by DWQ)
°p WA7q
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 III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325A774
Dale
December 6, 2013
Drainage area number
Ditch C04c
II. DESIGN INFORMATION
Site Characteristics
Drainage area
14,810 fC
Impervious area
5,663 fC
Percent impervious
382% %
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
0.392 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.170 fl3/sec
Post -development 1-yr, 24-hr peak flow
0.144 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-0.026 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required .
522.7 ft'
Volume provided
974.0 ft'
OK
Storage Volume: SAWaters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft'
OK
Cell Dimensions
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 It
Surface area of the top of the bioretention cell
2,063.0 ft2
OK
Length:
150 ft
OK
Width:
32 ft
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 inmr
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
Form SW401-Bioretention-Rev a
June 25, 2010
F E B 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Parts I and It. Design Summary, Page 1 of 3

Permit Number
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Bioretention-Rev.9
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

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 treeslshrubs?
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 SHWi
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 bioretenton
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)
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
(8*inches gravel followed by 3-5 ft of grass)
Grassed Swale
Forebay
Other
244.50 fmsl
Y (Y or N) OK
N (YorN)
243.5 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
241.5 fmsl
2ft
0.33 it
Y (YorN)
3 OK
10 OK
ift
240.17 fmsl
228.1 fmsl
12.07 It OK
N (Y or N)
fmsl
243.5 it
N/A
N/A
N/A #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
N/A ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
..Y (YorN) OK
N (Y or N) Insufficient ROW location.
N/A ft/sec Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN) OK
N (YorN) OK
Y (Y or N) OK
N/A
X #VALUE!
Y
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010
Pans I and II. Design Summary, Page 3 of 3

Permit No:-
• (to be assigned by DWO)
IIISIREQUIRED] ITEMS;CHECKLIST._
"NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
3T1R CP201-CP206'1
Located in Drainage Analysis 0
Located on Sheet C-301 ---►
Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2. Plan details (1' = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenton cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWi level(s), and overflow structure]
S Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
-
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition (°/ sand, %fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
- _
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

Pennit Number:
(to be provided by DWQ)
Of WAiFH
O�
NC ENR €
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
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Starlet;
Phone number
919-325-4774
Dale
December 6, 2013
Drainage area number
Ditch C04b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
14,810 ft'
Impervious area
5,663 ft'
Percent impervious
38.2%
Design rainfall depth
1.0 inch
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
PrelPost 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
Pending depth of water
Pending depth of water
Surface area of the top of the bioretention cell
Length:
Width:
-or- Radius
Media and Soils Summary
Drawdown fime, ponded volume
Drawdown time, to 24 inches below surface
Drawdown fime, total:
In -situ soil:
Soil permeability
Planting media soil:
Soil permeability
Soil composition
Sand (by volume)
% Fines (by volume)
% Organic (by volume)
Y (Y or N)
0.392 in
0.128 in/hr
0.170 rya/sec
0.140 ft3/sec
-0.030 ft3/ser.
522.7 ft3
953.0 ft'
N/A fits
ft3
ft3
N/A ft3
NIA ft3
12 inches
1.00 ft
2,039.0 ft'
150 ft
30 It
NIA ft
hr
hr
0 hr
0.01 inlhr
in/hr
85%
12%
3%
Total: 100%
y
OK
OK
OK
OK
OK
OK
EEB
4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Bioretention-Revd
June 25, 2010 Parts I and II. Design Summary, Page 1 of 3

Permit
Phosphorus Index (P-Index) of media 20 (unitless)
(to be provided by DWQ)
Form SW401-Bioretention-Rev.a
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number
(to be provided by DWD)
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 uptumed 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 bipretenlion
cell?
Does volume in excess of the design volume Bow 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 feel 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 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
(8*inches gravel followed by 3-5 ft of grass)
Grassed swale
Ferebay
Other
245.50 fmsl
Y (Y or N) OK
N (Y or N)
244.5 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
242.5 fmsl
2ft
nmft
Y (Y or N)
2 Insufficient number of clean out pipes provided.
10 OK
1ft
241.17 fmsl
237 fmsl
4.17 ft OK
N (Y or N)
fmsl
244.5 ft
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N (YorN) Insufficient ROW location.
NIA ft/sec Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN) OK
N (Y or N) OK
Y (Y or N) OK
NIA
X #VALUE!
Y
NIA
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and I. Design Summary, Page 3 of 3

Permit No:.
(to be assigned by DWO)
I11.�IREQUIREDiITEMSICHECKLISTt' "_ _ ,a. -: __ _:
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —s
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2, Plan details IV = 30'or larger) for the biorclention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —i
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
Tro C-301
y 1 1
3. Section view of the biorelention cell (1" = 20' or larger) showing:
- Side slopes, 37 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
S Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition I% sand, %fines, % organic), and
- P-index..
N/A
5, A detailed planting plan (1"= 20' or larger) prepared by a qualified Individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable):
Analysis
_
8. A copy of the signed and notarized inspection and maintenance (16M) agreement.
9. A copy of the deed restriction.

Permit Number
r t
(to be provided by DWD)
Aar
Op WATF4
°y
NCDENR
°�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 Ill) must be printed, filled out and submitted along with all of
the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch C031b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,068 ft2
Impervious area
7,405 ft2
Percent impervious
56.7% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is preipost control of the 1-yr, 24-hr peak Flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
1.118 in
1-yr, 24-hr intensity
0.128 in1hr
Pre -development 1-yr, 24-hr peak flow
0.074 ft'/sec
Post -development 1-yr, 24-hr peak Flow
0.462 ft3lsec
Pre/Post 1-yr, 24-hr peak control
0.388 ft3lsec
Storage Volume: Non-SAWaters
Minimum volume required
1,078.1 ft'
Volume provided
729.0.ft'
Increase volume provided.
Storage Volume: SAWaters
1.5'runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
NIA ft'
Volume provided
N/A ft'
OK
Cell Dimensions
Ponding depth of water
12 inches
OK
Fondling depth of water
1.00 ft
Surface area of the top of the bioretention cell
1,530.0 rye
OK
Length:
110 ft
OK
Width:
24 ft
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown 6me, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil.,
Soil permeability
0.01 in/hr
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
Organic (by volume)
3%
Total: 100%
F cE 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Biorelenlion-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Permit Number
(to be provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unidess)
Form SW401-Bi6felention-ReV.B
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number.
r Ito 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 (lop 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 SHWi
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 feel 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 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
(8'inches gravel followed by 3-5 it of grass)
Grassed Swale
Forebay
Other
244.50 fmsl
Y (YorN) OK
N (YorN)
243.5 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
241.5 fmsl
2 it
marl
Y (YorN)
2 OK
10 OK
1 it
240.17 fmsl
226.2 fmsl
13.97 it OK
N (YorN)
fmsl
243.5 it
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA it
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y ,(Y or N) OK
Y (Y or N) OK
N (Y or N) . Insufficient ROW location.
NIA fllsec 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
NIA
X #VALUE!
Y
NIA
Fomi SW401-Biorelention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by 0 WO)
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis - N - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system.
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 --► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T:rL CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at V=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 --o.
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
TTr C-301
�_I_I—
3. Section view of the bioretention cell (V = 20' or larger) showing:
- Side slopes, 3:1 or lower .
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, cording depth, mulch depth, fill media
'
depth, washed sand, filter fabric (or choking stone if applicable), tl57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
r
' 3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition .(% sand, % fines, % organic), and
- P-index.,
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified Individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable):,
Analysis
B. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to be provided by D WQ)
Qp WATpq
NCDENR C
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.
h PROJECT;INFORMATION °� .ir+';;' ;; "s" ,r "": `' ` ` ` - ,4r,4 >.
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Dale December 6, 2013
Drainage area number Ditch CO3a
II: DESIGN,INFORMATION'w+'.
Site Characteristics
Drainage area
13,068 ft'
Impervious area
7,405 ft'
Percent impervious
56.7%
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pretpost control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
1.118 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0,074 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.462.ft/sec
Pre/Post 1-yr, 24-hr peak control
0.388 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
1,078.1 ft3
Volume provided
685.0 rya
Increase volume provided.
Storage Volume: SAWaters
1.5" runoff volume
N/A ft3
Pre -development 1-yr, 24-hr runoff
0
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
NIA ft3
Volume provided
NIA ft3 -
OK
Cell Dimensions -
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 ft
Surface area of the top of the biorelention cell
1,431.0 ft'
OK F E B 4 2014
Length:
110 ft
OK
Width:
30 It
OK
-or- Radius
NIA It
OK '
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown fire, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in1hr
Soil composition
Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number
(to be provided by DWO)
Basin Elevations
Temporary pool elevation
245.50 fmsl
Type of biorelention cell (answer Y' to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
244.5 frost
Depth of mulch
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
242.5 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
1
Insufficient number of clean out pipes provided.
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
241.17 fmsl
SHWT elevation
236.3 fmsl
Distance from bottom to SHWT
4.87 It
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
244.5 ft
Planting Plan
Number of tree species
NIA
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretenlion
_
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filler.
through a vegetated filter?
What is the length of the vegetated filter?
N/A it
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 3:19
Y
(Y or N)
OK
Is the BMP located in a proposed drainage easement with access to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A ftlsec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
future?
Are the slopes draining to the biorelention 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
NIA
(8'inches gravel followed by 3-5 I1 of grass)
Grassed Swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Biomtenlion-Rev.8
June 25, 2010 Parts I and It. Design Summary, Page 3 of 3

Permit No:
` (to be assigned by DWQ)
1110REQUIRED;ITEMS�CHECKLISTi: � "'
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements"have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CP201-CP206' 1 Plans (1"- 50' or larger) of the entire site showing:
-Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis - P - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High Flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
S-(-_ CP201-CP206'
2. Plan details (1" = 30' or larger) for the biorelention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Indez between 10 and 30
y l l C-301
3. Section view of the biorelention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
'
- Bioretention cell layers (ground level and slope, pre-treatment, cording depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), k57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County sail maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition I% sand, % fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetafion.
0-522
6. A constmclion sequence that shows how the biorelention cell will be protected from sediment until the
entire drainage area is stabilized.
l-1--- Drainage
7. The supporting calculations (including underdrain calculations, If applicable):
Analysis
- _
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DWO)
oaoq WA7(.g
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 III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch 304c
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,504.ft'
Impervious area
4,356 ft'
Percent impervious
32.3% %
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
0.899 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.668 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.367 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-0.301 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
1,012.8 ft'
Volume provided
- 996.0 ft' Increase volume provided.
Storage Volume: SA Waters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
ff'
Minimum volume required
NIA ft'
Volume provided
N/A ft' OK
Cell Dimensions
Fording depth of water -
12 inches
Ponding depth of water
1.00 ft
Surface area of the top of the bioretenlion cell
1,653.0 ft'
Length:
105 ft
Width:
32 ft
-or- Radius
N/A ft
Media and Soils Summary
Drawdovm time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 inlhr
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
Form SW401-Bioretention-Rev.8
June 25, 2010
0
OK
OK
OK
OK
F E B 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Parts I and II. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (uniuess)
Permit Number.
(to be provided by DWD)
Form SW401-Biorelention-Rev.8
June 25, 2D10 Parts I and II. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWO)
Basin Elevations
Temporary pool elevation
243.40imsl
Type of biorelention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with treeslshrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
242.4 fmsl
Depth of mulch
NIA inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
240.4 fmsl
Planting media depth
2 It
Depth of washed sand below planting media soil
0.33 It
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 It
bottom of the cell to account for underdrains
Bottom of the cell required
239.07 fmsl
SHWT elevation
232.25 fmsl
Distance from bottom to SHWT
6.82 ft
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
frnsl
Separation of IWS and Surface
242.4 ft
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the biorelenlion
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA It
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
waters)?
Is the BMP Iocaled 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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
NIA ft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 It of grass)
Grassed Swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretenlion-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DVVQ)
I11:JREQUIRED;ITEMS'CHECKLIST,
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request tar additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
,T-M CP201-CP206' 1. Plans (1' - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis im - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T-r_f CP201-CP206'
2. Plan details (1' = 30' or larger) for the bioretenlion cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- ON -site drainage (if applicable),
Located on Sheet C-301 --►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
Tre C-301 3. Section view of the bioretenlion cell (1" = 20' or larger) showing
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Biorelention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DAD, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fini Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
�'({s C-522
6. A construction sequence that shows how the bioretenlion cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable)..
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by 01110)
ern
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 III) must be printed, filled out and submitted along with all of the required information
I'' PRO IECYINFORMATION B
_QF T
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch B04b
Ihu,DESIGN INFORMATION
,1
Site Characteristics
Drainage area
13,504 ft'
Impervious area
4,356 ft'
Percent impervious
32.3%
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
0.899in
1-yr, 24-hr intensity
0.128 inlhr
Pre -development 1-yr, 24-hr peak flow
0.668 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.379 113lsec
PrelPost 1-yr, 24-hr peak control
-0.289 ft'/sec
StomgeVolume: Non-SAWaters
Minimum volume required
1,012.8 ft3
Volume provided
962.0 113
Increase volume provided.
Storage Volume: SAWaters
1.5'runoff volume
NIA ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
NIA ft3
Volume provided
NIA fl3
OK
Cell Dimensions
Pending depth of water
_
12 inches
OK
Pending depth of water
1.00 It
Surface area of the top of the bioretention cell
1,581.0 ft'
OK
FEB 4 2014
Length:
100 ft
OK
Width:
32 ft
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
fir
Drawdown time, total:
0 fir
In -situ soil:
Soil permeability
0.01 inmr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
OK -
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelenlion-Rev.8
June 25, 2010 Parts I and tl. Design Summary, Page 1 or 3

Permit
Phosphorus Index (P-Index) of media 20 (unitless)
(to be provided by DWD)
Form SW401-Bioretention-Reve
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Basin Elevations
Pennit
(to be provided by DWQ)
Temporary pool elevation
244.00'fmsl
Type of bioretention cell (answer "Y'to only one of the two following
questions):
_
Is this a grassed cell?
Y
(Y or N)
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
243 fmsl
Depth of mulch
N/A inches
Bottom of the planting media soil
241 first
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
What factor of safety is used for sizing the underdrains? (See BMP
10
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 it
bottom of the cell to account for underdrains
Bottom of the cell required
239.67 fmsl
SHWT elevation
232.5 fmsl
Distance from bottom to SHWT
7.17 ft
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
243 ft
Planting Plan
Numberof tree species
NIA '
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
Additional Information
Does volume in excess of the design volume bypass the bioretentlon
Y
(Y or N)
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
through a vegetated filter?
What is the length of the vegetated filter?
NIA ft
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
waters)?
Is the BMP located at least 100 feet from water supply wells?
Y
(Y or N)
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
Is the BMP located in a proposed drainage easement with access to a
N
(Y or N)
public Right of Way (ROW)?
Inlet velocity (from treatment system)
NIA ftlsec
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
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
(8'inches gravel followed by 3-5 ft of grass)
Grassed Swale
Forebay
Other
OK
Insufficient mulch depth, unless installing grassed cell.
X21
M
92
#VALUE!
OK
Excess volume must pass through filter.
Show how flow is evenly distributed.
OK
OK
OK
Insufficient ROW location.
Insufficient inlet velocity unless energy dissipating devices are being
used.
OK
N (Y or N) OK
Y (Y or N) OK
N/A
X #VALUEI
v
Form SW401-Bioretention-Rev.8
June 25, 2010 - Parts I and 11. Design Summary, Page 3 of 3

Permit No:.
(to be assigned by DWQ)
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No. -
�i� CP201-CP206' 1. Plans (1" - 5(yor larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High now bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
-- CP261-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --j-
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
TV C-301
3. Section view of the bioretention cell 0"= 20' or larger) showing.
- Side slopes, 3:1 or lower
- Underdrain system (If applicable), and -
- Bioreten5on cell layers jground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHA T level(s), and overflow structure]
SDraining e
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWQ by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index. .
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified Individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable)_.
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DWQ)
9
Op WATFH
AA OG
NC®ENR
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.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch B04a
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,504 ft2
Impervious area
4,356 ft2
Percent impervious
32.3%
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
0.899 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.668 ft'Isec
'
Post -development 1-yr, 24-hr peak flow
0.379 ft'/sec
Pre/Post 1-yr, 24-hr peak control
-0.289 ft3lsec
Storage Volume: Non -SA Waters
Minimum volume required
1,012.8 ft3
Volume provided
1,209.0 ft3
OK
Storage Volume: SA Waters
1.5" runoff volume
N/A rya
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3 -
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
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
2,534.0 ft2
OK
Length:
205 it
OK �' F `1 4 2014
Width:
32 It
OK
-or- Radius
NIA ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Orawdown fine, total:
0 hr
In -situ soil:
Soil permeability
0.01inmr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelenlion-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 1 of 3

Peril Number:
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unitless)
For SW401-Biorelenlion=Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit
(to be provided by DWD)
Basin Elevations
Temporary pool elevation
Type of biorelention 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 (lop 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 biorelention
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 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
(8°inches gravel followed by 3-5 ft of grass)
Grassed Swale
Forebay
Other
244.60 fmsl
Y (Y or N) OK
N (Y or N)
243.6 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
241.6 fmsl
2ft
0.33 It
Y (Y or N)
3 OK
10 OK
1ft
240.27 fist
232.1 fmsl
8.17 fit OK
N (Y or N)
frost
243.6 It
NIA
N/A
N/A !!VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA It
N (Y or N) Show how flow is evenly distributed. .
Y (Y or N)
Y (Y or N)
Y (Y or N)
N (Y or N)
OK
OK
Insufficient ROW location.
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
N/A r
X #VALUE!
Y
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 3 of 3

Permit Nu:-,
(to be assigned by DWQ)
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification. r
Paget Plan
Initials Sheet No.
-T CP201-CP206` 1. Plans (1" - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis — o - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —* - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
�.- CP201-CP206'
2. Plan details (1" = 30' or larger) for the biorelention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 ---i-
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
Trn C-301
y t
3. Section view of the biorelention cell 0" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
T
�1 Drainage
4. A soils report that Is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shalt be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition I% sand, %fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
_
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522 -
6. A construction sequence that shows how the biorelention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including. underdrain calculations, if applicable):,
Analysis
8. A copy of the signed and notarized inspection and maintenance (10) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DWO)
op %07fH
`N, � C
NCDENR 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 HI) must be printed, filled out and submitted along with all of the required information.
Is_P,ROJECTINFORMATION;t
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Dale December 6, 2013
Drainage area number Ditch 803c
Ili'DESIGN INFORMATION
Site Characteristics
Drainage area 11,326 ft3
Impervious area 4,356 ft2
Percent impervious 38.5%
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
0.462 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.772 ft'/sec
Post -development 1-yr, 24-hr peak Flow
0.133 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-0.639 ft3/sec
StomgeVolume: Non-SAWaters
Minimum volume required
-171.5 a'
Volume provided
985.0 ff3
OK
Storage Volume: SAWaters
,
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
Cell Dimensions
Parching depth of water
12 inches
OK
Forcing depth of water
1.00 It
Surface area of the top of the biorelention cell
1,818.0 ft2
OK
Length:
140 ft
OK
Width:
301t
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
Soil permeability
inmr
Soil composition
% Sand (by volume)
85%
Fines (by volume)
1 °
% Organic (by volume)
3%
Total: 100%
FEB 4 2014
0
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-13ioreten6m-Rev.a
June 25, 2010 Parts I and II. Design Summary, Page 1 of 3

Permit Number
(to be provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unless)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit
(to be provided by D WQ)
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 bloretention
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 feel 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 21
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an "X" in the shaded cell)
Gravel and grass
(8'inches gravel followed by 3-5 It of grass)
Grassed Swale
Forebay
Other
246.00fmsl
Y (Y or N) OK
N (Y or N)
245 fmsl
N/A inches Insufficient mulch depth, unless installing grassed cell.
243 imsl
2tt
na.1a
Y (Y or N)
2 OK
10 OK
1ft
241.67 fmsl
236.07 fmsl
5.6ft OK
N (Y or N)
fmsl
245 it
N/A
N/A
N/A #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
N/A It
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N (Y or N) Insufficient ROW location.
N/A fli 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
N/A
X #VALUE!
Y
N/A
Form SW401-Biorelemw-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 3 of 3

Pennit Nom.
(to be assigned by D W0)
III[JREQUIRED]ITEMSiCHECKLIST
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. It the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206. 1. Plans (1" - 50' or larger) of the entire site showing,
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —► - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans areal 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —t.
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
T-sa C-301
�l�l_
3. Section view of the.bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenh'on cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdmins (if applicable),
SHWT level(s), and overflow structure]
S Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
P-index.
N/A
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
0-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
�1 Drainage
7. The supporting calculations (including underdrain calculations, ff applicable).
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to be provided by DWQ)
OF WAiFH
RA y �'
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SIORETENTION 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
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325.4774
Date
December 6, 2013
Drainage area number
Ditch B03b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
11,326 ft'
Impervious area
4,356 ft2
Percent impervious
38.5% %
Design rainfall depth
1.0 inch
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
Pending depth of water
Pending depth of water
Surface area of the lop 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)
Y (Y or N)
0.462 in
0.128 inlhr
0.772 ft3/sec
0.139 ft'Isec
-0.633 R'IeP.f.
-171.5 fl'
801.0 ft3 OK
N/A ft'
ft3
ft3
NIA ft'
NIA ft3 OK
12 inches
1.00 8
1,645.0 ft'
110 ft
30 ft
N/A it
hr
hr
0 hr
0.01 in/hr
in/hr
85%
12%
3%
Total: 100%
am,
OK
OK
OK
OK
FEB 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-aioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit Number:
,i (to he provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWO)
r
Basin Elevations
Temporary pool elevation
246.80 fmsl
Type of bioretention cell (answer 'Y'to only one of the two following
questions):
Is this a grassed cell?
Y
(Y or N)
OK
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (lop of the mulch or grass sod layer)
245.8 fmsl
Depth of mulch
N/A inches
Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
243.8 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
242.47 fmsl
SHWT elevation
236.17 fmsl
Distance from bottom to SHWT
6.3 ft
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the lop of the upturned elbow
fmsl
Separation of IWS and Surface
245.8 it
'
Planting Plan
Number of tree species
NIA
Number of shrub species
NIA
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through vegetated filler?
What is the length of the vegetated filter?
N/A it
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
'Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 Win access to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/Aft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
N/A
(B'inches gravel followed by 3-5 ft of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and It. Design Summary, Page 3 of 3

Permit No:
' Ito be assigned by D WDJ
II[;.!REQUIREVITEMStHECKLIST;_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —► - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2. Plan details (1" = 30' or larger) for the biorelention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 ---►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the biorelention cell (1"= 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), 457 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3� Draina e
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified In the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (I"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the biorelention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, ifapplicable). '
Analysis
-
B. A Copy of the signed and notarized inspection and maintenance (10) agreement.
9. A copy of the deed restriction.

Permit Number:
t
(to be provided by D WQ)
QF WA7(.4
®gin
HCDENR
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.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-3254774
Date
December 6, 2013
Drainage area number
Ditch 803a
II. DESIGN INFORMATION
Site Characteristics
Drainage area
11,326 ft2
Impervious area
4,356 ft'
Percent impervious
38.5% %
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
0,462 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.772 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.139 113/sec
Pre/Post 1-yr, 24-hr peak control
-0.633 ft3/sec
Storage Volume: Non-SAWaters
Minimum Volume required
-171.5 ft3
Volume provided
993.0 rya
OK
Storage Volume: SA Waters
1.5' runoff volume
N/A ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post-developmenLl-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
Cell Dimensions
Fondling depth of water
12 inches
OK
Fording depth of water
1.00 ft
Surface area of the lop of the biorelention cell -
2,081.0 ft'
.OK
Length:
170 ft
OK
Width:
28 ft
OK
-or- Radius
N/A It
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 inthr
Planting media soil:
_
Soil permeability
Whir
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
Organic (by volume)
3%
Total: 100%
Form SW401-eioretention-Rev.8
June 25, 2010
F F B 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Paris I and IL Design Summary, Page 1 of 3

Permit Number:
(to be provided by D WQ)
r
Phosphorus Index (P-Index) of media 20 (unidess)
Fomt SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number:
(to he provided by DWQ)
Basin Elevations
Temporary pool elevation
247.60 fmsl
Type of bioretention cell (answer "Y' to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
246.6 fmsl
Depth of mulch -
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
244.6 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
3
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 it
bottom of the cell to account for underdrains
Bottom of the cell required
243.27 fmsl
SHWi elevation
240.4 fmsl
Distance from bottom to SHWT
2.87 it
OK
Intemal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
246.6 It
Planting Plan _
Number of Gee species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretenfion
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A It
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
'
public Right of Way (ROW)?
Inlet velocity (from treatment system)
NIA ft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8*inches gravel followed by 3-5 ft of grass)
Grassed Swale
X
#VALUE!
Forebay
Y
Other
N/A
Fonn SW401-Biorelention-Rev.8
June 25, 2010 Parts I and If. Design Summary, Page 3 of 3

Permit No:
• r (to he assigned by DWD)
III.IREQUIRED;REMS(CHECKLIST,--,'_" �,. � � < �.•.. _
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No,
3T� CP201-CP206'1
Located in Drainage Analysis - 0
Located on Sheet C-301 --►
Plans IV- 50' or larger) of the entire site showing:
- Design at ultimate build -out, .
- OR -site drainage (If applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T-rp CP201-CP206'
2. plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —s
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
y_T C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHVVT level(s), and overflow structure]
Drainage 4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index..
N/A 5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S7f' C-522
�7 Drainage
Analysis
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations (including underdrain calculations, if applicable)..
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to be provided by DWD)
0p V7ATFq
,R
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 ,/I/) must be printed, filled out and submitted along with all of the required information.
IAPROJECT,INFORMATION ! - r, t y :. : f. " -
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Date December 6, 2013
Drainage area number Ditch B02c
111. DESIGNINFORMATION
Site Characteristics
Drainage area 13,504 fts
Impervious area 4,356 ft'
Percent impervious 32.3% %
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
0.578 in
1-yr, 24-hr intensity
0.128 inmr
Pre -development 1-yr, 24-hr peak flow
0.083 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.225 ft3/sec
Pre/Post 1-yr, 24-hr peak control
0.142 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
980.1 ft'
Volume provided
144.0 ft3
Increase volume provided.
StomgeVolume: SAWaters
1.5'runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
It
Minimum volume required
N/A ft'
Volume provided
N/A ft'
OK
Cell Dimensions
Pending depth of water
_
6 inches
Insufficient pending depth.
Pending depth of water
0.50 ft
Surface area of the lop of the bioretention cell
579.0 ft3
Insufficient surface area.
Length:
85 If
OK
Width:
28 ft
OK
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown lime, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
Soil permeability
in/hr
Sail composition
Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
F E 9 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Biorelenlion-Rev.a
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
QQ (unidess)
Permit Number:
(to be provided by DWQ)
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

t Permit Number.
(to be provided by DWD)
Basin Elevations
Temporary pool elevation 248.20 fmsl
Type of bioretention cell (answer "Y" to only one of the two following ,
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 247.7 fmsl
Depth of mulch N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 245.7 fmsl
Planting media depth 2 It
Depth of washed sand below planting media soil 0.33 It
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 It
'
bottom of the cell to account for underdrains
Bottom of the cell required
244.37 fmsl
SHWT elevation
241.2 fmsl
Distance from bottom to SHWT
3.17 ft
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
247.7 It
Planting Plan
Number of tree species
N/A
Number of shrub species
NIA
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretentlon
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA ft
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
future?
Are the slopes draining to the bioretentiomcell 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
N/A
(B'inches gravel followed by 3-5 It of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretenlion-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No:
• (to be assigned by DWO)
IIItdREQUIRED;ITEMSiCHECKLIST'.-`.' T ->
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. It the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1
Located in Drainage Analysis —►
Located on Sheet C-301 —I-
Plans (1'- 50' or larger) of the entire site showing:
Design at ultimate build -out,
- Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T-[?_ CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
-�_ C-301 3. Section view of the bioretention cell (V = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Biorelention cell layers (ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), tl57 stone, underdrains (if applicable),
SHWi level(s), and overflow structure]
S Draina e 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
N/A
C-522 -
Drainage
Analysis
situ soil must include:
- Soil permeability,
- Soil composition I% sand, %fines, % organic), and
- P-index..
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, -
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations (including underdrain calculations, if applicable)..
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DW°)
of WA7F4
NCDENR °�`
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form most 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 SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Date December 6, 2013
Drainage area number Ditch B02b
Site Characteristics
Drainage area
13,504 flz
Impervious area
4,356 fl'
Percent impervious
32.3%
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is pre/post control of the 1-yr, 24-hr peak Bow required?
Y (Y or N)
1-yr, 24-hr runoff depth
0.578 in
1-yr, 24-hr intensity
0.128 inmr
Pre -development 1-yr, 24-hr peak Flow
0.083 ft3lsec
Post -development 1-yr, 24-hr peak flow
0.225 ft'Isec
Pre/Post 1-yr, 24-hr peak control
0.142 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
980.1 ft3
Volume provided
531.0 f13
Increase volume provided.
Storage Volume: SA Waters
1.5' runoff volume
NIA fO
Pre -development 1-yr, 24-hr runoff
ff'
Post -development 1-yr, 24-hr runoff
It
Minimum volume required
NIA R3
Volume provided
NIA ft3
OK
Cell Dimensions
Ponding depth of water
12 inches
OK
Ponding depth of water
1.00 fit
Surface area of the lop of the blorelention cell
1,116.0.ry2
OK
Length:
75 fl
OK
Width:
28 It
OK
-or- Radius
NIA ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
Soil permeability
inlhr
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
F F B 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Farm SW401-Biomtenlion-Rev.8
June 25, 2010
Parts 1 and II. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (unidess)
Permit Number:
(to be provided by DWO)
Forth SW401-Biarelention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit
(to be provided by DWD)
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 SHWF
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)
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
(B'inches gravel followed by 3-5 It of grass)
Grassed swale
Forebay
Other
249.60 fmsl
Y (YorN) OK
N (YorN)
248.6 fmsl
N/A inches Insufficient mulch depth, unless installing grassed cell.
246.6 fmsl
2ft
niaff
Y (YorN)
2 OK
10 OK
1ft
245.27 fmsl
241.5 fmsl
3.77 It OK
N (Y or N)
fmsl
248.6 It
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA It
N (Y or N) Show how flow is evenly distributed.
Y (Y or N)
Y (Y or N)
Y (YorN)
N (YorN)
OK
OK
OK
Insufficient ROW location.
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 (YorN) OK
N/A
X #VALUE!
Y
r.ua
Form SW401-Biorelenlion-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
IIIidREQU1REDiREMS;CKECKLIST,'_'_`_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1' - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —► - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement,
�� CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --p.
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenfion cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), tl57 stone, underdrams (if applicable),
SHWT level(s), and overflow structure]
Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shalt be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index..
N/A
S. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-622
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
•
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).
Analysis
_ -
6. A copy of the signed and notarized inspection and maintenance (AM) agreement.
9. A copy of the deed restriction.

Permit Number
(to be provided by DWD)
°p wA7(q
A. L
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, tilled out and submitted along with all of the required information.
Project name
Contact name
Phone number
Date
Drainage area number
Jonathan Allen - Stantec
919-325A774
Ditch B02a
2013
IIf; DESIGN,INF,ORMATION�'.'""r, `,E. „ „;`'j ku ;•-+ 4x' I ,x, r. -`. 7`
Site Characteristics
Drainage area 13,504 ft2
Impervious area 4,356 ft3
Percent impervious 32.3% %
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
0.578 in
1-yr, 24-hr intensity
0.128 inmr
Pre -development 1-yr, 24-hr peak Flow
0.083 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.225 ft3/sec
Pre/Post 1-yr, 24-hr peak control
0,142 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
980.1 ft3
Volume provided
488.0 ft3
Storage Volume: SAWaters
1.5' runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
Cell Dimensions
Ponding depth of water
12'inches
Ponding depth of water
1.00 It
Surface area of the lop of the bioretention cell
998.0 ft3
Length:
75 It
Width:
28 ft
-or- Radius
N/A ft
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
Sail permeability
in/hr
Soil composition
Sand (by volume)
85%
% Fines (by volume)
12%
Organic (by volume)
3%
Total: 100%
Form SW401-Siorelenlion-Rev.8
June 25, 2010
Increase volume provided.
OK
OK
OK
OK
OK
OK
rEg 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Parts I and 11. Design Summary, Page 1 of 3

Permit Number
(to he provided by DWD)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit
Basin Elevations
(to be provided by DWQ)
Temporary pool elevation
250.60 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y
(Y or N)
OK
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
249.6 fmsl
Depth of mulch
NIA inches
Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
247.6 fmsl
Planting media depth
2 It
Depth of washed sand below planting media soil
0.33 It
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
1
OK ,
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
246.27 fmsl
SHWT elevation
242 fmsl
Distance from bottom to SHWT
4.27 ft
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the lop of the upturned elbow
fmsl
Separation of IWS and Surface
249.6 It
Planting Plan
Number of Gee species
NIA
Number of shrub species
NIA
-
Numberofherbaceousgroundcoverspecies
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume Flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA It
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feel from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Insufficient inlet velocity unless energy dissipating devices are being
Inlet velocity (from treatment system)
NIA fUsec
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 ft of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
NIA
Form SW401-Biorelenlion-Rev.6
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
IIl.'�REQUIREDIITEMSiCHECKWST,'_"
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No,
31� CP201-CP206' 1
Located in Drainage Analysis 1—�
Located on Sheet C-301 —►
Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
Z.L CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —o
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
TTT C-301 3. Section view of the hioretention cell (1" = 20' or larger) showing
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bierelenton cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), tl57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
-
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
N/A
5, A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S-C C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).
Analysis
_
8. A copy of the signed and notarized inspection and maintenance (10) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DWO)
r
0p WATF9
Cy
NCDENR
K
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
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Dale
December 6, 2013
Drainage area number
Ditch B01 b
II. DESIGN INFORMATION
Drainage area
20,038 ft'
Impervious area
7,841 ft'
Percent impervious
39.1%
Design rainfall depth
1.0 inch
Peak Flow Calculations '
Is prelpost control of the 1-yr, 24-hr peak Flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
1.01 in
1-yr, 24-hr intensity
0.128 inthr
Pre -development 1-yr, 24-hr peak flow
0.607 ft'/sec
Post -development 1-yr, 24-hr peak Flow
0.634 ft'/sec
Pre/Post 1-yr, 24-hr peak control
0.027 ft'/sec
Storage Volume: Non -SA Waters
Minimum volume required
1,127.9 ft'
Volume provided
508.0 it'
Increase volume provided.
Storage Volume: SAWaters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
ft'
Minimum volume required
N/A ft'
Volume provided
N/A ft'
OK
Cell Dimensions
Pending depth of water
12 inches
OK
Pending depth of water
1.00 ft
Surface area of the top of the biorelention cell
1,104.0 ft2
Insufficient surface area.
Length:
70 ft
. OK
Width:
25 ft
OK
-or- Radius
N/A it
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
fir
Drawdown time, total:
0 fir
In -situ soil:
Soil permeability
0.01 inthr
Planting media soil:
Soil permeability
inlhr
Soil composition
% Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
F E B A 2014
Insufficient, Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

(fa be provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unidess)
Form SW401-Bioretendon-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
251.90 mist
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
250.9 fmsl
Depth of mulch
NIA inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
248.9 fmsl
Planting media depth
2 it
Depth of washed sand below planting media soil
0.33 It
Are under -drains being installed?
Y (Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 It
bottom of the cell to account for underdrains
Bottom of the cell required
247.57 fmsl
SHWT elevation
243.6 fmsl
Distance from bottom to SHWT
3.97It
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N (Y or N)
Elevation of the top of the upturned elbow
mist
Separation of IWS and Surface
251 it
Planting Plan
Number of tree species
NIA
Number of shrub species
NIA
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y (Y or N)
OK
cell?
Does volume in excess of the design volume Flow evenly distributed
N (Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
NIA'ft
Does the design use a level spreader to evenly distribute flow?
N (Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
NIA ft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8*inches gravel followed by 3-5 fi of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
NIA
Form SW401-13ioretention-Rev.a
June 25, 2010 Paris I and II. Design Summary, Page 3 of 3

Permit No:.
i (to be asslgned by DWO)
IIhaREQUIRED;REMS'CHECKLISTi_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-Cl 1, Plans (1"- 50' m larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis -- P - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T-Tf CP201-CP206'
2_ Plan details (1" = 30' or larger) for the biorelention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public night of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --+
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
TTT C-301
3. Section view of the biorelention cell (1"= 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenfion cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), 457 stone, underdrains (if applicable),
SHVJf level(s), and overflow structure]
I Drainage
4. A soils report that is based upon an actual field investigation, soil bo ngs, and infiltration tests. The
Analysis
results of the soils report must be verified In the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (imsl). Results of soils tests of both the planting sail and the in
situ soil must include.
- Soil permeability,
- Soil composition I% sand, % fines, % organic), and
- P-index.,
N/A
5. A detailed planting plan (I"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the biorelention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable):,
Analysis
B. A copy of the signed and notarized inspection and maintenance (Al agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by DWQ)
r
OF WAip9
ENR
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.
I? PROJECTINFORMATION >' 4., :x
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-325-4774
Dale December 6, 2013
Drainage area number Ditch B01a
IL' DESIGNJNFORMATIONI
Site Characteristics
Drainage area 20,038 rye
Impervious area 7,841 It?
Percent impervious 39.1%
Design rainfall depth 1.0 inch
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: SAWaters
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 lop 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)
Y (Y or N)
1.01 in
0.128 in/hr
0.607 ft'/sec
0.634 ft3/sec
0.027 ft3/ser.
1,127.9 ft3
370.0 ft3
N/A ft3
ft3
ft3
N/A ft3
NIA ft3
12 inches
1.00 It
1,118.0 ft2
175 It
25 It
NIA ft
hr
hr
0 hr
Increase volume provided.
OK
OK
Insufficient surface area.
OK
OK
OK
U. B 4 2014
0.01 in/hr Insufficient. Increase infiltration rate or include underdrains.
inthr
85% OK
12% OK
3% OK
Total: 100%
Form SW401-Biarelention-Rev.e
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (unifless)
Permit
(to be provided by DWD)
Form SW401-Bioretenbon-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number.
i
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation 252.90 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell with trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 251.9 imsl
Depth of mulch N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 249.9 fmsl
Planting media depth 2 ft
Depth of washed sand below planting media soil 0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 it
bottom of the cell to account for underdrains
Bottom of the cell required
248.57 fmsl
SHWT elevation
245 first
Distance from bottom to SHWT
3.57 ft
OK
Intemal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
251.9 ft
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
NIA
#VALUE]
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filler.
through a vegetated filter? ,
What is the length of the vegetated filter?
N/A 1t
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A fVsec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 It of grass)
Grassed swale X #VALUE!
Forebay Y
Other NIA
Form SW401-Siorelenlion-Rev.8
June 25, 2010 Paris I and 11. Design Summary, Page 3 of 3

Permit No:.
(to be assigned by D WQ)
III:dREQUIRED;ITEMS;CHECKLIST,_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206'
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —►
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 --►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP21
2. Plan details (P = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —i
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, bonding depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), k57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index..
T
y.� N/A
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, -
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A ronstrucfon sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable)..
Analysis
- - _
8. A copy of the signed and notarized inspection and maintenance (10) agreement.
9. A copy of the deed restriction.

Permit Number
(to be provided by DWQ)
of %�N1A7r_,
y
AA
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 If/) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Dale
December 6, 2013
Drainage area number
Ditch A05
II. DESIGN INFORMATION
Site Characteristics
Drainage area
7,405 ft3
Impervious area
2,178 h2
Percent impervious
29.4% %
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
0.85 in
1-yr, 24-hr intensity
0.128 in/hr .
Pre -development 1-yr, 24-hr peak flow
0.320 ft3/sec
Post -development 1-yr; 24-hr peak flow
0.195 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-0.125 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
163.4 ft3
Volume provided
139.0 ft3
Increase volume provided.
Storage Volume: SA Waters
1.5" runoff volume
N/A ft3
Pre -development 1-yr, 24-hr runoff
fit,
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
Cell Dimensions
Ponding depth of water
_
7.2 inches
Insufficient ponding depth.
Ponding depth of water
0.60 It
Surface area of the top of the bioretention cell
433.0 ft2
OK
Length:
36 It
OK
Width:
36 It
OK
-or- Radius
N/A It
OK
Media and Soils Summary
Drawdown time, ponded volume
.. hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil.
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
% Fines (by volume)
12%
Organic (by volume)
3%
Total: 100%
FEB
4 2014
Insufficient. Increase infiltration rate or Include underdrains.
OK
OK
OK
Form SW401-Bioretention-Reza
June 25, 2010 Parts I and It. Design Summary, Page 1 of 3

Phosphorus Index (P-Index) of media
20 (unidess)
Permit Number:
(to be provided by D WQ)
Form SW401-Biomtention-Rev.6
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number
r �
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
240.50 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y
(Y or N)
OK
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
239.9 fmsl
Depth of mulch
NIA inches
Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
237.9 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
1
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 ft
bottom of the cell to account for underdrains
Bottom of the cell required
236.57 fmsl
SHWT elevation
225.7 fmsl
Distance from bottom to SHWi
10.87 If
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
239.9 It
Planting Plan
Number of tree species
NIA
Number of shrub species
N/A
Number of herbaceous groundccver species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filler.
through a vegetated ftlter?
What is the length of the vegetated filter?
N/A It
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feel if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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
NIA
(8•inches gravel followed by 3-5 ft of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other.
N/A
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by D WQ)
IIIrdREQUIREDITEMS(CHECKLIST---
"NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
11� CP201-CP206"
1. Plans (1"- 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis -
P - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T-rf CP201-CP206'
2. Plan details IV= 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system, L
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —+
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
-Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Siorelention cell layers )ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the Geld by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition I% sand, % fines, % organic), and
- P-index.
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST{> C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7, The supporting calculations (including underdrain calculations, if applicable).,
Analysis
- -
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
.
9. A copy of the deed restriction.

Permit Number.
(to be provided by D WQ)
M'
HCDENR
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.
II PRWECTINF,ORMATION 1` ','?777nv
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Stantec
Phone number 919-3254774
Dale December 6, 2013
Drainage area number Ditch A04c
IIii,DESIGN,INFORMATION`a.L,', _.'
Site Characteristics
Drainage area 13,939 ft2
Impervious area 5,227 rye -
Percentimpervious 37.5%
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
0.75 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.458 ft3/sec
Post -development 1-yr, 24-hr peak flow
0,321 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-0,137 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
1,274.1 ft3
Volume provided
1,128.0 ft3
Increase volume provided.
Storage Volume: SA Waters
1.5" runoff volume
N/A ft3 -
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
Cell Dimensions
Pending depth of water
12inches
OK
Pending depth of water
1.00 ft
Surface area of the top of the bioretention cell
2,364.0 ftz
OK
Length:
165 If
OK
Width:
40 ft
OK
-or- Radius
NIA ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 inlhr
Planting media soil:
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
1'1 11 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Forth SW401-Biorelention-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Pagel of 3

Permit
Phosphorus Index (P-Index) of media 20 (unidess)
(to be provided by DWO)
Form SW401-Bioretention-Rev.9
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

t
Permit Number.
(to be provided by D WQ)
Basin Elevations
Temporary pool elevation
Type of bioretenlion 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 bioretenlion
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)
Is the area surrounding the cell likely to undergo development in the
future?
Are the slopes draining to the bioretenlion 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
(8*inches gravel followed by 3-5 ft of grass)
Grassed swale
Forebay
Other
243.90 fmsl
Y (YorN) OK
N (YorN)
242.9 fmsl
NIA inches Insufficient mulch depth, unless installing grassed cell.
240.9 fmsl
2 ft
0.33 it
Y (Y or N)
3 OK
10 OK
1 ft
239.57 fmsl
234.07 fmsl
5.5 If OK
N (Y or N)
fmsl
242.9 It
N/A
N/A
N/A #VALUE!
Y (Y or N) OK
N (Y or N)
Excess volume must pass through filter.
N/A It
N (Y or N)
Show how flow is evenly disrbuled.
Y (YorN)
OK
Y (Y or N)
OK
Y (Y or N)
OK
N (Y or N)
Insufficient ROW location.
N/A ft/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN)
OK
N (Y or N) OK
Y (Y or N) OK
NIA
X #VALUE!
Y
N/A
Forth SW401-Biorelenlion-Rev.8
June 25, 2010
Pads I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DINO)
III dREQUIREDIREMS CHECKLIST,_
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS, ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
STR_ CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis o - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,.
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
d.L _ CP201-CP206' 2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due - Cell dimensions
to large number of ditches - Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 ---► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
�-� C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenton cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
r
J (� Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form: County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl), Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index..
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
-
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
(-P Drainage
7, The supporting calculations (including underdrain calculations, if applicable).
Analysis
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

NCDENR
Penns Number.
(to be provided by DWD)
OF WA
-O21
?rEgOc
O1C K
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
Contact name
Phone number
Date
Drainage area number
Jonathan Allen -
919-325-4774
December 6, 2013
Ditch A04d
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,939 ft
Impervious area
5,227 ft
Percent impervious
37.5% %
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
0.75 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.458 ft'lsec
Post -development 1-yr, 24-hr peak flow
0.321 ft�/sec
PretPost 1-yr, 24-hr peak control
-0.137 fl'Isec
Storage Volume: Non•SA Waters
Minimum volume required
1,274.1 ft'
Volume provided
1,181.0 eIncrease volume provided.
Storage Volume: SA Waters
1.5' runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
ft'
Minimum volume required
WA ft'
Volume provided
N/A ft' OK
Cell Dimensions
Ponding depth of water
12 inches
Ponding depth of water
1.00 ft
Surface area of the top of the bioretention cell
2,337.0 f?
Length:
165 ft
Width:
40 ft
-or- Radius
N/A ft
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In-sb soil:
Soil permeability
0.01 irllhr
Planing media soil:
Soil permeability
inthr
Soil composition
% Sand (by volume)
55%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
n
OK
OK
OK
OK
FEB 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-13ioretention-Rev.6
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit Number
(to be provided by DWD)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Bioretention-Rev.e
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit
Ito 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 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 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
(8'inches gravel followed by 3-5 It of grass)
Grassed swale
Forebay
Other
243.00 (msl
Y (Y or N) OK
N (YorN)
242 frost
NIA inches Insufficient mulch depth, unless installing grassed cell.
240 fmsl
2ft
n'i3 fl
Y (YorN)
3 OK
10 OK
ift
238.67 fmsl
233.97 fmsl
4.7ft OK
N (Y or N)
fmsl
242 It
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N)
Y (Y or N)
Y (Y or N)
N (YorN)
OK
OK
OK
Insufficient ROW location.
NIA f isec 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
NIA
X #VALUE!
Y
we
Form SW401-13ioretenlion-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 3 or 3

Permit No:
(to be assigned by D WQ)
I11;eREQUIRED'ITEMSICHECKLIST.-
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3.7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met, If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis P. - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW).
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
J-f f> CP201-CP206'
2. Plan details (1"= 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —i - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
q-rP C-301 3. Section view of the bioretention cell (P' = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure)
3� Drainage 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County sail maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include'.
- Soil permeability,
- Soil composition I sand, % fines, % organic), and
P-index.
N/A 5, A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST�
C-522
Drainage
Analysis
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations (including underdrain calculations, if applicable).
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to be provided by DWO)
®�� �0P wAT<.q
NC ENR
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 lit) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name SOF Brigade Headquarters -Roadway
Contact name Jonathan Allen - Santee
Phone number 919-3254774
Date 12-613
Drainage area number Ditch A04b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,939 ft'
Impervious area
5,227 ft2
Percent impervious
37.5%
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
0.75 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.458 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.321 ft'Isec
Pre/Post 1-yr, 24-hr peak control
-0.137 ft'/sec
Storage Volume: Non-SAWaters
Minimum volume required
1,274.1 ft'
Volume provided
1,010.0 ft'
Storage Volume: SA Waters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft'
Post -development 1-yr, 24-hr runoff
to
Minimum volume required
N/A ft'
Volume provided
NIA ft'
Cell Dimensions
Pending depth of water
12 inches
Pending depth of water
1.00 If
Surface area of the lop of the bioretention cell
2,161.0 ft'
Length:
155 ft
Width:
40 It
-or- Radius
NIA It
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Planting media soil:
,
Soil permeability
Whir
Soil composition
% Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume)
3%
Total: 100%
Increase volume provided.
OK
OK
OK
OK
OK
OK
FEB 4 201*4
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
4
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Permit Number:
(to he provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Bioretention-Rene
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

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
SHWi elevation
Distance from bottom to SHWi
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 feel 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 3:11
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
(8*inches gravel followed by 3-5 It of grass)
Grassed swale
Forebay
Other
244.80 fmsl
Y (Y or N) OK
N (Y or N)
243.8 fmsl
N/A inches Insufficient mulch depth, unless installing grassed cell.
241.8 fmsl
2It
033a
Y (Y or N)
3 OK
10 OK
1 fit
240.47 fmsl
234.57 fmsl
5.9 fl OK
N (Y or N)
fmsl
243.8 It
NIA
N/A
N/A #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
N/A It
N (Y or N) Show how flow is evenly distributed.
Y
(Y or N)
OK
Y
(Y or N)
OK
Y
(Y or N)
OK
N
(Y or N)
Insufficient ROW location.
N/A f /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
N/A
X #VALUE!
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts 1 and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by D WO)
III 3REQUIRED;ITEMS'CHECKLIST,_""
_ r
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
3-� CP201-CP206' 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis — o - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system.
Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 ---►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
:yTp C-301
3. Section view of the bioretention cell (1"= 20' or larger) showing:
- Side slopes, 3i1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), P57 stone, underdrains (if applicable),
SHWT Ievel(s), and overflow structure]
Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County sail maps are not an acceptable source of soils information. All
elevations shall be in feel mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition I% sand, % fines, % organic), and
- P-index..
N/A
5, A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:.
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� 0-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
B. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
1
(to be provided by DWQ)
°p VIArFq
®� 6
NCDENR C
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
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Slantec
Phone number
919-325.4774
Date
December 6, 2013
Drainage area number
Ditch A04a
II. DESIGN INFORMATION
Site Characteristics
Drainage area
13,939 ffr
Impervious area
5,227 if
Percent impervious
37.5% %
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
0.75 in
1-yr, 24-hr intensity
0.128 in1hr
Pre -development 1-yr, 24-hr peak flow
0.458 f'/sec
Post -development 1-yr, 24-hr peak flow
0.321 rya/sec
Pre/Post 1-yr, 24-hr peak control
-0.137 ff3/sec
Storage Volume: Non-SAWaters
Minimum volume required
1,274.1 ff3
Volume provided
1,193.0R3
Increase volume provided.
Storage Volume: SAWaters
1.5' runoff volume
NIA fl3
.
Pre -development 1-yr, 24-hr runoff
113
Post -development 1-yr, 24-hr runoff
ff3
-
Minimum volume required
N/A it'
Volume provided
NIA ff3
OK
Ceti Dimensions
Pending depth of water
12 inches
OK
Ponding depth of water
1.00 ft
FEB 4 2014
Surface area of the lop of the bioretention cell
2,516.0 ffz
OK
Length:
205 it
OK
Width:
35 it
OK
-or- Radius
NIA it
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown lime, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
-
Soilpermeability
0.01 in1hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-eioretentioo-Rev.a
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWQ)
Phosphorus Index (P-Index) of media 20 (unidess)
Fonn SW601-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number:
(to be provided by DWO)
Basin Elevations
Temporary pool elevation
Type of biorelention 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)
Is the area surrounding the cell likely to undergo development in the
future?
Are the slopes draining to the biorelention 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
(B'inches gravel followed by 3-5 It of grass)
Grassed swale
Forebay
Other
245.70 fmsl
Y (Y or N) OK
N (Y or N)
244.7 fmsl
N/A inches Insufficient mulch depth, unless installing grassed cell.
242.7 first
eft
0 33 ft
Y (Y or N)
3 OK
10 OK
1ft
241.37 fmsl
234.67 fmsl
6.7ft OK
N (Y or N)
fmsl
244.7 It
NIA
N/A
N/A #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filter.
NIA It
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (Y or N) OK
N (Y or N) Insufficient ROW location.
NIA ft/sec Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN) OK
N (Y or N) OK
Y (Y or N) OK
N/A
X #VALUE!
Y
N/A
Forth SW401-Bioretention-Rev.8
June 25, 2010
Parts 1 and II. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
*NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
3TP CP201-CP206' 1. Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis —►- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2, Plan details (1'= 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number o1 ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public fight of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --+
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenton cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), N57 stone, underdrains (if applicable),
SHWT level(s), and overflow, structure]
S Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include'.
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
P-index.
N/A
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A vanety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planing detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
Srj C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
�a Drainage
7. The supporting calculations (including underdrain calculations, if applicable),.
Analysis
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

Permit Number.
(to be provided by 0WD)
R
OF WATFq
Cy
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.
Project name
SOF Brigade theadquaners-Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325.4774
Dale
December 6, 2013
Drainage area number
Ditch A03d
Drainage area
9,583 ft3
Impervious area
3,485 ft'
Percent impervious
36.4% %
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
0.58 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.406 ft'/sec
Post -development 1-yr, 24-hr peak flow
0.150 ft"/sec
Pre/Post 1-yr, 24-hr peak control
-0.256 fil
Storage Volume: Non-SAWaters
Minimum volume required
1,078.1 fl3
Volume provided
460.0 ft'
Increase volume provided.
Storage Volume: SA Waters
1.5" runoff volume
N/A ft'
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A it'
Volume provided
N/A h3
OK
Cell Dimensions
Ponding depth of water
12 inches
OK Ea 4 2014
Ponding depth of water
1.00 ft
Surface area of the top of the biorelention cell
888.0 fi'
Insufficient surface area.
Length:
60 ft
OK
Width:
30 It
OK
-or- Radius
N/A It
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
inthr
Soil composition
% Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%.
OK
Total: 100%
Forth SW401-Bioretenbon-Rev.B
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Bioretenlion-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
247.20 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
246.2 fmsl
Depth of mulch
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
244.2 fmsl
Planting media depth
2 it
Depth of washed sand below planting media soil
0.33 it
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
1
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 N
bottom of the cell to account for underdrains
Bottom of the cell required
242.87 imsl
SHVVT elevation
240 fmsl
Distance from bottom to SHWT
2.87 fl
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
firs!
Separation of IWS and Surface
246.2 ft
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
NIA
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretention
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filler?
What is the length of the vegetated filter?
NIA fl
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A ti/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 fl of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
I1UREQUIREVITEMS1-CHECKLISTL--- _
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
scale
Initials Sheet No.
Tip_ CP201-CP206'
1. Plans (I" - So' or larger) of the entire site showing'.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis
ii. - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
S- CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
PI I V 40' due
- Cell dimensions
ans are a =
to large number of ditches - Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —f - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
C-301 3. Section view of the bioretention cell (1" = 20' or larger) showing
- Side slopes, 3:1 or lower '
- Underdrain system (if applicable), and
- Bioretention cell layers ]ground level and slope, pre-treatment, bonding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), p57 stone, underdrains (if applicable),
_
Sl level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified In the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
N/A
5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522 -
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, it applicable).
Analysis
_
8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

L �5
Permit Number
(to be provided by DWQ)
op VIATFq
NCDENR 4
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.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-3254774
Date
December 6, 2013
Drainage area number
Ditch A03c
II. DESIGN INFORMATION
Site Characteristics
Drainage area 9,583 ft2
Impervious area 3,485 ft2
Percent impervious 36.4% %
Design rainfall depth 1.0 inch
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 -SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5" runoff volume
Pre -development l-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Cell Dimensions
Pending depth of water
Ponding depth of water
Surface area of the top of the bioreterhon 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)
Y (YorN)
0.58 in
0,128 inthr
u.4uo tt-rsec
0.160 ft3/sec
-0.246 1
1,078.1 ft3
450.0 rya Increase volume provided.
N/A fit'
fill'
ft3
N/A ft3
N/A ft3 OK
12 inches OK
I On rl EB 4 2014
940.0 R2 Insufficient surface area.
65ft OK
28ft OK
N/A ft OK
_hr
hr
o hr
0.01 inmr Insufficient. Increase infiltration rate or include underdrains.
inmr
85% OK
12% OK
3% OK
Total: 100%
Form SW401-Bioretemion-R.vS
June 25, 2010
Parts I and 11. Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWO)
Phosphorus, Index (P-Index) of media 20 (unitless)
Form SW401-Biorelention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWQ)
Basin Elevations
Temporary pool elevation
248.10 fmsl
Type of bioretention cell (answer "Y'to only one of the two following
questions):
Is this a grassed cell?
Y (Y or N) OK
Is this a cell with trees/shrubs?
N (Y or N)
Planting elevation (top of the mulch or grass sod layer)
247.1 fmsl
Depth of mulch
N/A inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
245.1 fmsl
Planting media depth
2 fit
Depth of washed sand below planting media soil
0.33 It
Are underdrains being installed?
Y (Y or N)
How many clean out pipes are being installed?
1
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
'
Additional distance between the bottom of the planting media and the
1 It
bottom of the cell to account for underdrains
Bottom of the cell required
243.77 fmsl
SHWT elevation
240 fmsl
Distance from bottom to SHWT
3.77 it
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow
fmsl
Separation of IWS and Surface
247.1 It
Planting Plan
Number of tree species
N/A
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the biorelenton
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A it
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
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 the
N
(Y or N)
OK
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
NIA
(8'inches gravel followed by 3-5 fitof grass)
Grassed Swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

Permit No:
' (to be assigned by DWO)
III:dREQUIRED;ITEMS'CHECKLIST _`
`NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1
Located in Drainage Analysis —►
Located on Sheet C-301 —►
CP201-CP206'
Plans are at 1"=40'scale due
to large number of ditches
Plans (V - 50' or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
2. Plan details (1"= 30'or larger) for the bioretention cell showing:
- Cell dimensions
Located on Sheet C-301 --►
Pretreatment system,
High flow bypass system,
Maintenance access,
Recorded drainage easement and public right of way (ROW),
Design at ultimate build -out,
Off -site drainage (if applicable),
Clean out pipe locations,
Overflow device, and
Boundaries of drainage easement.
Indicate the P-Index between 10 and 30
I—TTC-301
3. Section view of the bioretention cell (V = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenton cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Draina a
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified In the field by DWO, by completing ,3 submitting the soils
investigation request form. County sail maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index..
N/A
S. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planfing detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
ST� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7, The supporting calculations (including underdrain calculations, if applicable).
Analysis
-
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

i
Permit Number.
(to be provided by DWQ)
m aF WATF,q
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 III) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name
SOF Brigade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325-4774
Date
December 6, 2013
Drainage area number
Ditch A03b
III . DESIGN INFORMATION
Site Characteristics
Drainage area 9,583 ft2
Impervious area 3,485 ft2
Percent impervious 36.4% %
Design rainfall depth 1.0 inch
Peak Flow Calculations
Is prelpost 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
PrelPost 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)
Y (Y or N)
0.58 in
0.128 inmr
0.406 ft3/sec
0.160ft/sec
-0.246 ft3/sec
1,078.1 ft3
132.0 ft3
NIA ft3
ft3
ft3
NIA ft3
NIA ft3
6 inches
0.50 It
469.0 ft2
70 ft
26 ft
N/A ft
hr
hr
0 hr
0.01 in/hr
inmr
85%
12%
3%
Total: 100%
Increase volume provided.
'R
Insufficient ponding depth.
Insufficient surface area.
OK
OK
OK
EB 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Biorelenlion-Rev.8
June 25, 2010
Parts I and It. Design Summary, Page 1 of 3

Permit Number.
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unitless)
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit Number.
i
(to be provided by D WQ)
Basin Elevations
Temporary pool elevation 248.60 fmsl
Type of bioretention cell (answer "Y" to only one of the two following
questions):
Is this a grassed cell? Y (Y or N) OK
Is this a cell Wth trees/shrubs? N (Y or N)
Planting elevation (top of the mulch or grass sod layer) 248.1 fmsl
Depth of mulch NIA inches Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil 246.1 fast
Planting media depth 2 It
Depth of washed sand below planting media soil 0.33 it
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 biorelention
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)
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
(8'inches gravel followed by 3-5 it of grass)
Grassed swale
Forebay
Other
Y (Y or N)
2 OK
10 OK
1 It
244.77 fmsl
240.5 fmsl
4.27 it OK
N (YorN)
fmsl
248.1 If
NIA
NIA
NIA #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through flier.
N/A ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N) OK
Y (Y or N) OK
Y (YorN) OK
N (Y or N) Insufficient ROW location.
N/A R/sec Insufficient inlet velocity unless energy dissipating devices are being
used.
N (YorN) OK
N (Y or N) OK
Y (Y or N) OK
NIA
X #VALUE!
Y
NIA
Form SW401-Bioretention-Rev.8
June 25, 2010
Parts I and 11. Design Summary, Page 3 of 3

Permit No:
(to be assigned by DWO)
IIL IREQUIRED;ITEMSICHECKflIST."
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS, ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
CP201-CP206'1. Plans (1"-50'or larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis — o - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 ---► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2. Plan details (1" = 30' or larger) for the biaretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public dght of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 —i
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
�P C-301
3. Section view of the biaretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretenfion cell layers (ground level and slope, pre-treatment, porting depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), p57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
3 Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County sail maps are not an acceptable source of sails information. All
elevations shall be in feel mean sea level (fmsl). Results of sails tests of both the planting soil and the in
situ sail must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
_ZLl�p _ N/A
5, A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, -
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S-()O C-522
6. A construction sequence that shows how the biaretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdmin calculations, if applicable).,
Analysis
-
B. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permn Number.
(to be provided by DWQ)
o?Q� WAT(:r
NCDENR C
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be rifled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, rifled out and submitted along with all of the required information.
rrolecr name
Contact name
Phone number
Date
Drainage area number
II. DESIGN INFORMATION
Site Characteristics
SOF Brigade Headquarters -Roadway
Jonathan Allen - Stanlec
919-3254774
December 6, 2013
Ditch A03a
Drainage area
9,583 ft"
Impervious area
3,485 fl
Percent impervious
36.4% %
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
0.58 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
0.406 ft°Issc
Post -development 1-yr, 24-hr peak flax
0.160 flslsec
Pre/Post 1-yr, 24-hr peak control
-0.246 ft'IseC
Storage Volume: Non -SA Waters
Minimum volume required
1.078.1 ft'
Volume provided
119.0 t'
Storage Volume: SA Waters
1.5" runoff volume
NIA fit"
Pre -development 1-yr, 24-hr runoff
ft°
Post -development 1-yr, 24-hr runoff
fl'
Minimum volume required
WA ft'
Volume provided
NIA ft
Cell Dimensions
Ponding depth of water
6 inches
Ponding depth of water
0.50 ft
Surface area of the top of the bioretention cell
443.0 fl
Length:
95 ft
Width:
28 It
-or- Radius
NIA ft
Media and Soils Summary
DrawdDwn time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
fri-situ soil:
Soil permeability
0.01 infhr
Planting media soil:
Soil permeability
irvhr
Soil composition
% Sand (by volume)
85%
% Fines (by volume)
12%
% Organic (by volume) '
3%
Total: 100%
Increase volume provided.
OK
Insufficient ponding depth.
Insufficient surface area.
OK
OK
OK
I E 13 4 2014
Insufficient. Increase infiltration rate or include underdrains.
OK
OK
OK
Form SW401-Biaetentlon-llev.8
June 25, 2010
Pena I and II. Design Summery, Page 1 of 3

Permit Number
(to be provided by D WQ)
Phosphorus Index (P-Index) of media 20 (unit ess)
Form SW401-Bioretention-Rev.ft
June 25, 2010 Parts I and II. Design Summary, Page 2 of 3

Permit Number.
(to be provided by DWD)
Basin Elevations
Temporary pool elevation
249.60 fmsl
Type of bioretention cell (answer Y' to only one of the two following
questions):
Is this a grassed cell?
Y
(Y or N)
OK
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
249.1 fmsl
Depth of mulch
NIA inches
Insufficient mulch depth, unless installing grassed cell.
Bottom of the planting media soil
247.1 fmsl
Planting media depth
2 ft
Depth of washed sand below planting media soil
0.33 ft
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
OK
What factor of safety is used for sizing the underdrains? (See BMP
10
OK
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 tt
bottom of the cell to account for underdrains
Bottom of the cell required
245.77 fmsl
SHWT elevation
241 fmsl
Distance from bottom to SHWT
4.77 it
OK
Internal Water Storage Zone (IWS)
Does the design include IWS
N
(Y or N)
Elevation of the lop of the upturned elbow
fmsl
Separation of IWS and Surface
249.1 It
Planting Plan
Number of tree species
NIA
Number of shrub species
N/A
Number of herbaceous groundcover species
N/A
#VALUE!
Additional Information
Does volume in excess of the design volume bypass the bioretenbon
Y
(Y or N)
OK
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
Excess volume must pass through filter.
through a vegetated filter?
What is the length of the vegetated filter?
N/A it
Does the design use a level spreader to evenly distribute flovr?
N
(Y or N)
Show how flow is evenly distributed.
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
OK
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 to a
N
(Y or N)
Insufficient ROW location.
public Right of Way (ROW)?
Inlet velocity (from treatment system)
N/A It/sec
Insufficient inlet velocity unless energy dissipating devices are being
used.
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
OK
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
N/A
(8*inches gravel followed by 3-5 ft of grass)
Grassed swale
X
#VALUE!
Forebay
Y
Other
N/A
Form SW401-Bioretention-Rev.13
June 25, 2010 Parts I and I. Design Summary, Page 3 of 3

Permit No:
(to be assigned by D WQ)
III:•IREQUIRED;ITEMSiCHECKLIST.'
•NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
CP201-CP206' 1. Plans (1"- 5(yor larger) of the entire site showing.
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis It - Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 --►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
CP201-CP206'
2, Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at 1"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- OH -site drainage (if applicable),
Located on Sheet C-301 —+
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement,
- Indicate the P-Index between 10 and 30
TTP C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdram system (if applicable), and
- Bioretenfion cell layers (ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filler fabric (or choking stone if applicable), 957 stone, underdrains (if applicable),
SHVJT level(s), and overflow structure]
I f Drainage
4. A soils report that is based upon an actual field investigation, sail borings, and infiltration tests. The
Analysis
results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl), Results of soils tests of both the planting soil and the in
situ soil must include.
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index.,
N/A
5, A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, -
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522 _
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
Drainage
7. The supporting calculations (including underdrain calculations, if applicable).,
Analysis
-
8. A copy of the signed and notarized inspection and maintenance (18M) agreement.
9. A copy of the deed restriction.

Permit Number
-
(to be provided by DWD)
01 WA%FH
ASI
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
SOF Bngade Headquarters -Roadway
Contact name
Jonathan Allen - Stantec
Phone number
919-325A774
Dale
December 6, 2013
Drainage area number
Ditch A021b
II. DESIGN INFORMATION
Site Characteristics
Drainage area
23,522 ft' -
Impervious area
4,792 ft'
Percent impervious
20.4% %
Design rainfall depth
1.0 inch
Peak Flow Calculations
Is prelpost control of the 1-yr, 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr runoff depth
0.66 in
1-yr, 24-hr intensity
0.128 in/hr
Pre -development 1-yr, 24-hr peak flow
1.475 ft3/sec
Post -development 1-yr, 24-hr peak flow
0.457 ft3/sec
Pre/Post 1-yr, 24-hr peak control
-1.018 ft3/sec
Storage Volume: Non-SAWaters
Minimum volume required
-326.7 ft3
Volume provided
965.0 ft3
OK
Storage Volume: SAWaters
1.5'runoff volume
NIA ft3
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
N/A ft3
Volume provided
N/A ft3
OK
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
1,971.0 ft'
OK -
Length:
170ft
OK
q P014
Width:
30 It
OK FBI
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, corded volume
hr
Drawdown time, to 24 inches below surface
hr
Drawdown time, total:
0 hr
'
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
infir
Soil composition
Sand (by volume)
85%
OK
% Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Bioretention-Re¢8
June 25, 2010 Parts I and 11. Design Summary, Page 1 of 3

Permit Number. '
(to be provided by DWO)
Phosphorus Index (P-Index) of media 20 (unifless)
Fom1 SW401-Bioretention-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Basin Elevations
Permit
(to be provided by DWO)
Temporary pool elevation
251.50 fmsl
Type of bioretenlion cell (answer Y' to only one of the two following
questions):
Is this a grassed cell?
Y
(Y or N)
Is this a cell with trees/shrubs?
N
(Y or N)
Planting elevation (top of the mulch or grass sod layer)
2%5 fmsl
Depth of mulch
N/A inches
Bottom of the planting media soil
248.5 fmsl
Planting media depth
2 It
Depth of washed sand below planting media soil
0.33 It
Are underdrains being installed?
Y
(Y or N)
How many clean out pipes are being installed?
2
What factor of safety is used for sizing the underdrains? (See BMP
10
Manual Section 12.3.6)
Additional distance between the bottom of the planting media and the
1 fl
bottom of the cell to account for underdrains
Bottom of the cell required
247.17 fmsl
SHWi elevation
243 fmsl
Distance from bottom to SHWT
4.17 It
Internal Water Storage Zone (IWS) .
Does the design include IWS
N
(Y or N)
Elevation of the top of the upturned elbow -
fmsl
Separation of IWS and Surface
250.5 It
Planting Plan
Number of tree species
NIA
Number of shrub species
NIA
Number of herbaceous groundcover species
NIA
Additional Information
Does volume in excess of the design volume bypass the bioretenlion
Y
(Y or N)
cell?
Does volume in excess of the design volume flow evenly distributed
N
(Y or N)
through a vegetated filler?
What is the length of the vegetated filter?
N/A it
Does the design use a level spreader to evenly distribute flow?
N
(Y or N)
Is the BMP located at least 30 feet from surface waters (50 feet if SA
Y
(Y or N)
waters)?
Is the BMP located at least 100 feet from water supply wells?
Y
(Y or N)
Are the vegetated side slopes equal to or less than 3:1?
Y
(Y or N)
Is the BMP located in a proposed drainage easement vfith access to a
N
(Y or N)
public Right of Way (ROW)?
Inlet velocity (from treatment system)
-
N/A ft/sec
Is the area surrounding the cell likely to undergo development in the
N
(Y or N)
future?
Are the slopes draining to the bioretenlion 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
(8'inches gravel followed by 3-5 It of grass)
Grassed swale
Forebay
Other
OK
Insufficient mulch depth, unless installing grassed cell.
OK
OK
OK
#VALUE!
92
Excess volume must pass through filter.
Show how flow is evenly distributed.
OK
OK
OK
Insufficient ROW location. -
Insufficient inlet velocity unless energy dissipating devices are being
used.
OK
N (Y or N) OK
Y (Y or N) OK
NIA
X #VALUE!
Y
N/A
Form SW401-Bioretention-Rev.8
June 25, 2010 Parts I and II. Design Summary, Page 3 of 3

Permit No:
' (to be assigned by DWQ)
IILJREQUIRED;ITEMS!CHECKLIST.
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification,
Pagel Plan
Initials Sheet No.
'�l� CP201-CP206' 1, Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis ---►- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
�� _ CP201-CP206'
2. Plan details IV = 30' or larger) for the bioretention cell showing:
Plans are at 1 "=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 --►
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
y 1 1 C-301
3. Section view of the bioretention cell (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, pending depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
S Drainage
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis
- results of the soils report must be verified in the field by DWO, by completing 8 submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting sail and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, %fines, % organic), and
- P-index.,
N/A _
5. A detailed planting plan (1" = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail, _
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
S� C-522
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the.
entire drainage area is stabilized.
Drainage
7, The supporting calculations (including underdrain calculations, if applicable).,
Analysis
- -
B. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number.
r
Ito be provided by D W0f
®* A
'
a0F WA Trq
O. OG
HCDENR
�
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.
Project name
Contact name
Phone number
Dale
Drainage area number
SOF Brigade Headquarters -Roadway
Jonathan Allen - Stantec
919-325.4774
December 6, 2013
Ditch A02a
II. DESIGN INFORMATION
Site Characteristics
Drainage area
23,522 ftz
Impervious area
4,792 ft'
Note: Due to site constraints (horizontal
Percent impervious
20.4% %
and vertical) each individual ditch may not
Design rainfall depth
1.0 inch
meet required volumes and surface areas
Peak Flow Calculations
for individual drainage areas however the
Is pre/post control of the 1 -yr, 24-hr peak flow required?
Y (YorN)
net required treatment volume for all
1-yr, 24-hr runoff depth
0.66 in
ditches combined is met for each Drainage
1-yr, 24-hr intensity
0.128 inmr
Basin.
Pre -development 1-yr, 24-hr peak flow
1.475 ft3/sec
Post -development l-yr,24-hrpeak flow
0.465ft3/sec
Basin A Total Required Treatment Volume
Pre/Post 1-yr, 24-hr peak control
-1.010 ft3/sec
= 10,822.74 cf
storage Volume: Non-SAWaters
Basin A Provided Treatment Volume =
Minimum volume required
-326.7 ft3
25,875.85 cf
Volume provided
261.0 ft3
OK
StomgeVolume: SAWaters
Basin B Total Required Treatment Volume
1.5'runoff volume
N/A p3
= 9,873.16 cf
Pre -development 1-yr, 24-hrrunoff
ft3
Basin B Provided Treatment Volume =
Post -development 1-yr, 24-hr runoff
ft3
15,283.60 cf
Minimum volume required
N/A ft
Volume provided
N/A ft3
OK
Cell Dimensions
Ponding depth of water
6 inches
Insufficient ponding depth. '
Ponding depth of water
0.50 ft
Surface area of the top of the biorelention cell
912.0 ft'
OK
Length:
180 It
OK 2Q)4
Width:
26ft
OK FFB
-or- Radius
N/A ft
OK
Media and Soils Summary
Drawdown time, ponded volume
hr
Drawdown time, to 24 inches below surface
hr
-
Drawdown time, total:
0 hr
In -situ soil:
Soil permeability
0.01 in/hr
Insufficient. Increase infiltration rate or include underdrains.
Planting media soil:
Soil permeability
in/hr
Soil composition
% Sand (by volume)
85%
OK
Fines (by volume)
12%
OK
% Organic (by volume)
3%
OK
Total: 100%
Form SW401-Biorelention-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 1 of 3

Permit
Phosphorus Index (P-Index) of media 20 (unidess)
(to be provided by DWD)
Form SW401-Bioretenfim-Rev.8
June 25, 2010 Parts I and 11. Design Summary, Page 2 of 3

Permit
(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 feel 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 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
(B'inches gravel followed by 3-5 ft of grass)
Grassed swale
Forebay
Other
252.00 fmsl
Y (Y or N) OK
N (Y or N)
251.5 fmsl
N/A inches Insufficient mulch depth, unless installing grassed cell.
249.5 fmsl
eft
0.33 ft
Y (Y or N)
3 OK
10 OK
1ft
248.17 fmsl
242.5 fmsl
5.67 it OK
N (Y or N)
fmsl
251.5 ft
NIA
NIA
N/A - #VALUE!
Y (Y or N) OK
N (Y or N) Excess volume must pass through filler.
N/A ft
N (Y or N) Show how flow is evenly distributed.
Y (Y or N)
Y (Y or N)
Y (Y or N)
N (Y or N)
OK
OK
OK
Insufficient ROW location.
N/A li 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
N/A
X #VALUE!
Y
nue
Form SW401-Bioretendon-Rev.8
June 25, 2010
Parts I and II. Design Summary, Page 3 of 3

Permit
III:dREQUIRED;ITEMSiCHECKLISL _,'
'NOTE: THESE SHEETS CONTAIN ALL OF THE BIORETENTION DITCH SECTIONS. ITEMS 3-7 APPLY FOR ALL DITCHES.
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
OP201-CP206' 1. Plans (1"- 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located in Drainage Analysis — o - Delineated drainage basins (include Rational C coefficient per basin),
Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
Located on Sheet C-301 —► - Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
T:T? _ CP201-CP206'
2. Plan details (1" = 30' or larger) for the bioretention cell showing:
Plans are at i"=40' scale due
- Cell dimensions
to large number of ditches
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate build -out,
- Off -site drainage (if applicable),
Located on Sheet C-301 —i
- Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement.
- Indicate the P-Index between 10 and 30
:ySp C-301 3. Section view of the bioretention cell 0"= 20' or larger) showing:
- Side slopes, 3:1 or lower
- Underdrain system (if applicable), and
- Biorelention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone if applicable), #57 stone, underdmins (if applicable),
SHWT level(s), and overflow structure]
3 Drainage 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
Analysis results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request farm. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
Soil permeability,
Soil composition (% sand, % fines, % organic), and
P-index.
N/A 5. A detailed planting plan (1"= 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
- The source nursery for the plants, and
- Fertilizer and watering requirements to establish vegetation.
C-522 6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized. .
Drainage 7. The supporting calculations (including underdrain calculations, if applicable).
Analysis
- 8. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
9. A copy of the deed restriction.

Permit Number:
(to he provided by DIFQ)
Drainage Area Number:
Bioretention Operation and Maintenance Agreement
I will keep a maintenance record on this IMP. 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 bioretenton 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.
FEB 4 2014
BMP element:
Potentialproblems:
Ilow 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).
FormSW401-Bioretention O&M-Rev.3 Page 1 of4

BMP element:
Potentialproblems:
Flow 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
l
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 S W401-Biorelention O&M-Rev.3 Page 2 of 4

BMP element:
Potentialproblems:
}low 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.
733-1796.
Form SW401-Bioretention O&M-Rev.3 Page 3 of 4

Permit Number:
(ro be provided by DIVQ)
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: SOP Brigade Headquarters (Roadway)
BMP drainage area number: Bioretention Ditch A (A02a-AO2b, A03a-A03d. A04a-
Print name: Mr. David Heins
Title: Pt. Bragg Directorate of Public Works (DPW) / Chief -Environmental Division
Address: 2175 Reilly Road Stop A, fort Bragg, NC 28310-5000
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
a Notary Public for the State of
, County of , do hereby certify that
personally appeared before me this
day of I , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAT.
My commission expires
Form S W 401-Bioretention IRM-Rev. 2
Page 4 of 4

Permit Number.
(to be prorided br UIPQ)
Drainage Area Number:
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 13MP.
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.
— Fleavy 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. FEB 4 2014
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
a licable).
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-Bioretcntion 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.
ullies'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 pretreatmentarea.
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 necessarv.
Tree stakes/wires are present
Remove tree stake/wires (which
six months after planfing.
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
laver 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
pl-I 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-Rcv.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 re lace 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-Biorelenlion O&M-Rev.3
Page 3 of 4

r,
I
I
Permit Number:
(to be provided by DIVA) '
I
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: SOF Brigade Headquarters (Roadway)
I
BMP drainage area number: Bioretention Ditch C W03a-0O3b, C04b-0040
Print name: Mr. David Heins
Title: Ft. Bragg Directorate of Public Works (DPW) / Chief -Environmental Division
Address: 2175 Reilly oad Stop A, Fort Bmm NC 28310-5000
Signature: r\��
Date: / Z- ? � )3
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.
M
a Notary Public for the State of
County of , do hereby certify that
personally appeared before me this _
day of and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
SEAL
My commission
Form sW40143ioretention 1&M-Rev. 2
Page 4 of 4