SW7061016_CURRENT PERMIT_20070328

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE7��
YYYYMMDD

Michael F. Easley, Governor
i William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
� Alan W. Klimek, P.E. Director
Division of Water Quality
DIVISION OF WATER QUALITY
March 28, 2007
Beaufort County
Attn: Mr. Paul Spruill
121 West Third Street
Washington, NC 27889
Subject: Stormwater Permit No.,SW7061016
Industrial Park, Lot 9
High Density Stormwater Project
Beaufort County
Dear Mr. Spruill:
The Washington Regional Office received your completed
Stormwater Application for the subject project on March 28, 2007.
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. We are
forwarding Permit No. SW7061016 dated March 28, 2007 to Beaufort
County.
This permit shall be effective from the date of issuance
until March 28, 2017 and shall be subject to' the conditions and
limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit.
Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in
future compliance problems.
If any parts, requirements, or limitations contained in this
permit are unacceptable, you have the right to request an
adjudicatory hearing upon written request within thirty (30) days
following receipt of this permit. This request must be in the
form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of
Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and
binding.
North Carolina Division of Water Quality Internet: h2o.enr.state.nc.us
943 Washington Square Mall Phone: [phone]
Washington, NC 27889 FAX [phone]
An Equal OpporlunitylAffrmative Action Employer— 50% Recycled/10% Post Consumer Paper
NorthCarolina
Naturally

Beaufort County
March 28, 2007
Page Two
If you have any questions, or need additional information
concerning this matter, please contact Mr. Bill Moore at (252)948-
3919.
Ancere y,
Al Hodge, Regional.Supervisor
Surface Water Protection Section
Washington Regional Office
cc: McDavid Associates - Farmville Office
Beaufort County Planning/Inspections
WARD Stormwater Files
Central Files

State Stormwater Management Systems
Permit No..SW7061016
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143,
General Statutes of North Carolina as amended, and other
applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
County of Beaufort
Beaufort County
FOR THE
construction, operation and maintenance of stormwater management
systems in compliance with the provisions of 15A NCAC 2H.1000
(hereafter referred to as the "stormwater rules") and the approved
stormwater management plans .and specifications and other
supporting data as attached and on file with and approved by the
Division of Water Quality and considered a part of_this permit for
grassed swales and (3) Bioretention Filters to serve Beaufort
County Industrial Park, Lot 9, located off Page Road near
Washington, NC.
This permit shall be effective from the date of issuance until
March 28, 2017, and shall be subject to the following specified
conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and
volume of stormwater described in the application and other
supporting data.
2. This stormwater system has been approved for the management
of stormwater runoff as described on page 4 of this permit,
the Project Data Sheet.
3. Approved plans and specifications for this project are
incorporated by reference and are enforceable parts of the
permit.
3

DIVISION OF WATER QUALITY
PROJECT DATA
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:,
Application Date:
Water Body Receiving Stormwater
Runoff:
Classification o.f Water Body:
Total Site Area:
Total Impervious
Surfaces Allowed:
Basin Depths:
Required Storage Volume:
Provided Storage Volume:
Provided Surface Area:
Storage Elevations:
T
Beaufort County Industrial
Park, Lot 9
SW7061016
Beaufort County
County of Beaufort
PO BOX 1027
Washington, NC 27889
10/17/2006; original
03/28/2007; complete
UT -Mitchell Branch
C-sw
6.66 acres
2.37 acres
12-inch storage depth
for each Filter
2688 cf - Basin 1
2869 cf - Basin 2
3394 cf - Basin 3
3830 cf - Basin 1
3300 cf - Basin 2
3400 cf - Basin 3
3850 sf - Basin 1
3300 sf - Basin 2
3400 sf - Basin 3
29.00 ft - Basin 1
28.50 ft - Basin 2
29.55 ft - Basin 3

4. No homeowner/lot owner/developer shall be allowed to fill in,
alter, or pipe any vegetative practices (such as swales)
shown on the. approved plans as part of the stormwater
management system without submitting a revision to the permit
and receiving approval from the Division.
5. The following items will require a modification to the
permit:
a. Any revision to the approved plans, regardless of size
b. Project name change
C. Transfer of ownership
d. Redesign or addition to the approved amount of built-
upon area
e. Further subdivision of the project area.
In addition, the Director may determine that other revisions
to the project should require a modification to the permit.
6. The Director may notify the permittee when the permitted site
does not meet one or more of the minimum requirements of the
permit. Within the time frame specified in the notice, the
permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements.
The permittee shall provide copies of revised plans and
certification in writing to the Director that the changes
have been made.
II. SCHEDULE OF COMPLIANCE
1. The permittee will comply with the following schedule for
construction and maintenance of the stormwater management
system.
a. The stormwater management system shall be constructed
in its entirety, vegetated and operational for its
intended use prior to the construction of any built -
upon surfaces except roads.
b. During construction, erosion shall be kept to a minimum
and any eroded areas of the system will be repaired
immediately.
2. The facilities must be properly maintained and operated at
all times. The approved Operation and Maintenance Plan must
be followed in its entirety and maintenance must occur at the
scheduled intervals.
3. The permittee shall at all times provide the operation and
maintenance necessary to assure the permitted stormwater
system functions at optimum efficiency including, but not
limited to:
19

a. Semi-annual scheduled inspections (every 6 months)
b. Sediment removal
C. Mowing and revegetation of side slopes
d. Immediate repair of eroded areas
e. Maintenance of side slopes in accordance with approved
plans and specifications
f. Debris removal and unclogging of outlet structure,
orifice device and catch basins and piping.
4. Records of maintenance activities must be kept and made
available upon request to authorized personnel of DWQ. The
records will indicate the date, activity, name of person
performing the work and what actions were taken.
5. This permit shall become voidable unless the facilities are
constructed in accordance with the conditions of this permit,
the approved plans and specifications, and other supporting
data.
6. Upon completion of construction and prior to operation of
this permitted facility, a certification must be received
from an appropriate designer for the system installed
certifying that the permitted facility has been installed in
accordance with this permit, .the approved plans and
specifications, and other supporting documentation. Mail the
Certification to the Washington Regional Office, 943
Washington Square Mall, Washington, North Carolina, 27889,
attention Division of Water Quality.
7. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for a minimum of five
years from the date of the completion of construction.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a
desire for the facilities to change ownership, or there is a
name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an
application fee, documentation from the parties involved, and
other supporting materials as may be appropriate. The
approval of this request will be considered on its merits and
may or may not be approved.
2. Failure to abide by the conditions and limitations contained
in this permit may subject the Permittee to enforcement
action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6(a) to 143-215.6(c).
3. 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) which have jurisdiction.
6

4. In the event that ' the facilities fail to perform
satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective
action, including those as may be required by this Division,
such as the construction of additional or replacement
stormwater management systems.
5. The permit may be modified, revoked and reissued or
terminated for cause. The filing of a request for a permit
modification, revocation and reissuance or termination does
not stay any permit condition.
6. At least 6 months prior to the expiration date, the permittee
shall request that this permit be renewed.
Permit issued this the 28 th day of March, 2007.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan w. K11meK, L'.E., uirector
Division of Water Quality
By Authority of the Environmental
Permit Number SW7061016
7
Management Commission

Stormwater Permit SW7061016 - Beaufort County Industrial Park, Lot 9
Grassed Swales & (3) Bioretention Filters
Designer's Certification
I,
as a duly
Registered Professional Engineer in the State of North Carolina, having been authorized to observe
(pedodically/weekly/full time)
the construction of the project,
(Project)
for (Project Owner)
hereby state that to the best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial compliance and intent of the
approved plans and specifications.
Signature
Registration Number
Date
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage.
_2. The drainage area to the system contains no more than the permitted amount of built -upon area.
_3. All the built -upon area associated with the project is graded such that the runoff drains to the
system.
4. All roof drains are located such that the runoff is.directed into the system.
_5. The outlet/bypass structure elevations are per the approved plan.
_6. The outlet structure is located per the approved plans.
_7. Trash rack is provided on the outlet/bypass structure.
_8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
_10. The inlets are located per the approved plans and do not cause short-circuiting of the system.
_11. The permitted amounts of surface area and/or volume have been provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf, and a forebay.
15. The required system dimensions are provided per the approved plans.

Stonnwater Permit SV 7061016 - Beaufort County Industrial Park, Lot 9
Grassed Swales & (3) Bioretention Filters OCT 2 7 21,110
Designer's Certification
I, Richard B. Moore as a dulylF'�/�)f'i}��,
Registered Professional Engineer in the State of North Carolina, having been authorized m odserve
( enodicall weekly/full time)
the construction of the project, Beaufort County Industrial
Park - Lot 9
for Beaufort County (Project Owner)
hereby state that to the st of my abilities, due care and diligence was used in the observation of the project
construction such that construction was ob`er gr�//�/ be built within substantial compliance and inient of tine
aporgved plar a d sp �tigns. ��k``1111C'"'AR0�����i
Signature �� 4.' ESSIp; •y
Registration Number NCPE 20205 - a ;E.AL F :
I o 125 I too :
Date
Certification Requirements:
1. The drainage area to the system contains approximately the permitted acreage.
2. The drainage area to the system contains no more than the permitted amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the runoff drains to the
system.
_4. All roof drains are located such that the runoff is directed into the system.
_5. The outlet/bypass structure elevations are per the approved Dian.
_6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
6. All slopes are grassed with permanent vegetation.
_9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-circuiting of the syste. r.
_11. The permitted amounts of surface area and/or volume have been provided.
_12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
_14. All required parts of the system are provided, such as a vegetated shelf, and a forebay
15. The required system dimensions are provided per the approved plans.

MCDAVID ASSOCIATES, INC.
I N e. - LM-L� Engineers • Planners • Land Surveyors
CORPORATE OFFICE GOLDSBORO OFFICE
[phone]• Fax [phone] [phone]• Fax[phone]
E-mail: [e-mail] E-mail: [e-mail]
3714 N. Main Street • P.O. Drawer 49 109 E. Walnut Street • P.O. Box 1776
Farmville, NC 27828 Goldsboro, NC 27533
October 26, 2010
OCT 2 7 2010
NC Department of Environment and Natural Resources
Division of Water Quality
943 Washington Square Mall
Washington, NC 27889
Subject: Stormwater Permit SW 7061016
Beaufort County Industrial Park
Lot 9 Site Development
Dear Sirs/Madams:
In reference to the subject project, please find enclosed one (I ) copy of a Designer's Certification
for your records.
Please be advised that the project site is also under thejurisdiction of the City of Washington and
required a stormwater permit from Washington. The City has conducted site inspections and has
coordinated corrective actions with the Owner.
Please advise as I may provide additional information for your
RBM/cep
Enclosures
cc:. Paul Spruill (w/encl.)
Sincerely,
Inc.
R'i ha Mo6ha Uore, P. E.
Farmville Office
D805RBM 10 1 8:40 AM
Beaufort-Co-EDC-06-IP-Site-Dev-StOmlwaleM1Permit-NCDENR-101026-002.wpd 101026

OFFICE.USE ONLY.
Date Received
Fee Paid
PermitE�A
r03-16
- 2�0 7
✓
5
RECEOVE® State of North Carolina
Department of Environment and Natural Resources
MAR 16 2007 Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
Dtl,p/ Q- tl tl1p/ ARQ This form may he photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
1.
Beaufort County
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
cRoy. Chairman Pa v/ �
3. Mailing Address for person listed in item 2�abboove�:
191 went Ird. Street "T
City: Washington State: NC Zip: 27889
Telephone Number. ( 252 ) 946-0079
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Contract No. 1 — Civil'Sitework
Beaufort County Industrial Park Lot 9
5. Location of Project (street address):
Lot 9 -Page Road, Beaufort County Industrial Park
City: Washington County: Beaufort
6. Directions to project (from nearest major intersection):
From Washington take US 264 West to its intersection with Leggett Road. Turn righl
.,..a ,.,...«a.,..e .,. «h. 4nf•ermrtinn with Pave Road. Turn left and go 1,200 LF. Projei
is on your right.
7. Latitude: 35° 36' 09" Longitude: 770 05' 26" of project
B. Contact person who can answer questions about the project:
Name: Richard B. Moore, PE Telephone Number: ( 252 ) 753-2139
II. PERMIT INFORMATION:
1. Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Page 1 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density High Density _Redevelop — X—reeneral Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stonnwaler management for the project .
Stormwa_Ce_�_i11__rrave1 to grass swales where it will be collected into three (3)
bio.retention cells.
2. Stormwater runoff from this project drains to the Tar —Pamlico River basin.
3. Total Project Area: 6.66 acres 4. Project Built Upon Area 35. to %
5. How many drainage areas does the project have? 3
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same formal as below.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
t ell Branch
UT Mitchell Branch
Receiving Stream Class
co SWP
C, Sw
Drainage Area
2.03
2.13
Existing Impervious" Area
n-no
0.00
Proposed Impervious*Area
% Impervious* Area (total)
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
0.54
0.54
On -site Streets
.00
0.00
On -site Parking
0.17
0.22
On -site Sidewalks
0.00
0.00
Other on -site
0.00
0.00
Off -site
0.00
0.00
Total: 0.71
Total: 6
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density _High Density Redevelop Ceneral Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major _Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwa(er will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
2. Stormwater runoff from this project drains to the
3. Total Project
5. How many drainage areas does the project have?
4. Project Built Upon
River basin.
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
BasinInformation
Drainage Area3)
Drainage Area 2
Receiving Stream Name
UT Mitchell Branchh
Receiving Stream Class
C • Sw
Drainage Area
2.50
Existing Impervious* Area
0.00
Proposed Impervious%Area
0.90
% Impervious* Area (total)
36.007
Impervious* Surface Area
. Drainage Areaj
Drainage Area 2
On -site Buildings
0.00
On -site Streets
0.00
On -site Parking
0.90
On -site Sidewalks
0.00
Other on -site
0.00
Off -site
0.00
Total: 0.90
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be. provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
Z No more than square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the Integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, 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 State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
__ _ _....._ __ Form SW-101 Version 3.99 Page 3 of

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. The complete application package should be
submitted to the appropriate DWQ Regional Office.
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including.
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VII. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section.
Designated agent (individual or firm); Richard B. Moore PE McDavid Associates, Inc.
Mailing Address: PO Drawer 49
Farmville
Phone: ( 252 1 753-2139
VIII. APPLICANT'S CERTIFICATION
State: NC Zip: 27828
Fax: ( 252 ) 753-7220
L (print or type name of person listed in General Information, Item 2) lay McRov Chai rman
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 15A
NCAC 2H .1000.
Date: /1-4L
Form SWU-101 Version 3.99 Page 4 of 4

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality REGIt VED
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
MAR 2 8 2�U- �"7
BIORETENTION BASIN SUPPLEMENT ®iN4 INARO
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : Beaufort County Industrial Park— Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number: 252 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 2
(must match the DA # on the application & plaru)
H. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (finsl).
Soils Report Summary
In -Situ Soil Type La — Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 25.50 ft. (Seasonal High Water Table elevation)
Planting Soil Texture sandy loam (must be a sandy loam, loamy sand, or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area 92,782.80 sq.ft. (on -site and off -site drainage to the basin)
Impervious Area 33,105.66 sq.ft. (on -site and off -site drainage to the basin)
Design Storm 1" inch (1.5 inch event for SA waters, 1 inch event for others)
Design Volume 2,869.31 c.f. (storage volume required)
Inlet Velocity 2.0 fps
Drawdown Time 0.33 hours
Basin Dimensions
Basin Size 132 ft. x 25 ft. = 3,300 sq. ft. (surface area at basin bottom)
Basin Volume Provided 3,300 c.f.
Minimum # of plantings 28 stems (400 stems per acre of bioretention area minimum)
Total #of plantings provided 5 Trees 23 Shrubs (must be at least 3 shrubs for each tree)
Basin Elevations
Temporary Pool Elevation 28.50 finsl (elevation of the bypass/outlet structure)
Planting Elevation 28.25 finsl (elevation of the ground surface bottom)
Bottom Elevation 27.25 finsl (elevation of the bottom of the planting media)
SWU-lxx 2.07
Pagel of 3

T
Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources t�_tt�p_
Division of Water Quality CF.I ml E�
STORMWATER MANAGEMENT PERMIT APPLICATION FORM MAR 16 2007
BIORETENTION BASIN SUP MENT DW¢ WAR©
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes st er management permit application, a bioretention
area supplement for each proposed system, sealed design cal 1 s, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details
I. PROJECT INFORMATION /
c
Project Name : Beaufort CoAty Indu teal ark — Lot 9 Site Development
Contact Person: Richard B ore P Phone Number:
For projects with mul
which basin this worksheet anolies to:
match the DA 0 on the application & plans)
IL DESIGN INFORMATION -Attach supporting 'alculati is/ mentation. Provide a written soils report based
on actual field investigations conducted by a qualified ihdividu . ��s ils report should include informational
references to the County soils maps when available. 411 elAvations a'I1 be in feet mean sea level (fmsl).
Soils Reportn
I v
In -Situ Soil TLa — e f silt to
In -Situ Soil I0.2 n./hr. (t tost restrictive soil layer)
SHWT Eleva24. 0 ft. (Season 1 High Water Table elevation)
Planting
Planting
Basin Desig Pa
Drainage Are
Impervious A a
Design Storm
Design Volume
Inlet Velocity
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Minimum # of plantings
Total #of plantings provided
Basin Elevations
Temporary Pool Elevation
Planting Elevation
Bottom Elevation
SWU-Ixx 2.07
ust be a sandy loam, Joann, sand, or loan( texture)
(estimated)
92,782.80 sq.11. (on -site and off -site drainage to the basin)
33,105.66 sq.ft. (on -site and off -site drainage to the basin)
1" inch (1.5 inch event for SA waters, I inch event for others)
2,869.31 c.f. (storage volume required)
2.0 fps 1
0.33 hours +
t S-6r ,
132 ft. x 25 ft. = 3,300 sq. ft. (surface area at basin bottom)
5,742.00 c.f.
28 stems (400 stems per acre of bioetention area minimum)
5 Trees 23 Shrubs (must be at least 3 shrubs for each tree)
28.50 fmsl (elevation of the bypass/outlet structure)
28.34 fmsl (elevation of the ground surface bottom)
26.60 fmsl (elevation of the botaun of the planting media)
Pagel of 3

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach rnritten justification. An incomplete submittal
package will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X 1. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet and outlet are provided.
X p. An operation and maintenance agreement sibmed and notarized by the responsible party is provided.
This system (check one) X does ❑ does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-lxx 2.07
Page 2 of 3

3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
=- removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
5. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight 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.
Print name: Paul Spruill
i itle: County Manager
Address: Beaufort County, 121 West 3rd Street Washington NC 27889
Phone: L
Signature:
Date: . �C�47 2-,2. 4O° %
Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the
subdivision has been named the president. 1, , 1 1.
I, Lt 3A�� . �3y:i w— , a Notary Public for the State of N6r_ t �arn ft u n
County of I do hereby certify that NXA\ S QC _;t �\
personally appeared before me this day of _:Saav%tAA t. 4 -2..5 '20or-I , and acknowledge the due execution
of the forgoing biq=Wj r basin maintenance requirements. Witness my hand and official seal
W/f,O
Off`' --ter. ••r
My commission expires 1a 1 x� `I 1
SWU-Ixx 2.07
Page 3 of 3

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality 'RECG E®
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
MAR 2 8 2007
BIORETENTION BASIN SUPPLEMENT ®WQ-WARO
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : Beaufort County Industrial Park —Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number: ( 252 ) 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 1
(must match the DA # on the application & plans)
H. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
In -Situ Soil Type La — Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 25.50 ft. (Seasonal High Water Table elevation)
Planting Soil Texture
sandy loam (must be a sandy loam, loamy sand, or loam texture)
Planting Soil Infiltration Rate
3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area
88,426.80 sq.ft. (on -site and off -site drainage to the basin)
Impervious Area
30,927.60 sq.ft. (on -site and off -site drainage to the basin)
Design Storm
1" inch (1.5 inch event for SA waters, I inch event for others)
Design Volume
2,688.17 c.f. (storage volume required)
Inlet Velocity
2.0 fps
Drawdown Time
0.33 hours
Basin Dimensions
Basin Size
110 ft. x 35 ft. = 3,850 sq. ft. (surface area at basin bottom)
Basin Volume Provided
3,850 c.f.
Minimum # of plantings
12 stems (400 stems per acre of bioretention area minimum)
Total #of plantings provided
4 Trees 12 Shrubs (must be at least 3 shrubs for each tree)
Basin Elevations
Temporary Pool Elevation 28.50 finsl (elevation of the bypass/outlet structure)
Planting Elevation 28.25 fins) (elevation of the ground surface bottom)
Bottom Elevation 27.25 find (elevation of the bottom of the planting media)
SWU-lxx 2.07
Pagel of 3

Permit No.
(to be provider] by DWQ)
State of North Carolina
Department of Environment and Natural
Division of Water Quality
STORMWATER MANAGEMENT PERMIT
BIORETENTION BASIN SUPP
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a
area supplement for each proposed system, sealed design calcc
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name :
Contact Person:
For projects with multiple basins,
II. DESIGN INFORMA7
on actual field investigations i
references to the County soils
Soils Report Summary
In -Situ Soil Type
In -Situ Soil Infiltration Rate
SHWT Elevation
-Cut"KA411 Lail
FORM MAR 16 2007
DWQ-WARD
r'n ement permit ,application, a bioretentic
port and 2 sets o plan and sgectfications
umber:
workshect applies to:
(must quyE1, the DA # on the application & plans)
ng calculations/documents to Provide a written soils report based
d individual. The soils rep rt s ould include informational
All elevations shall be in f et mean sea level (fmsl).
L6 - LC01 �lll IV4111
0.20 in./hr. (the t ost t 'strictii
24.1 ft. (Season d Hig Water
Planting Soil Texture sand,, l� (mustNnals(4
dy lot i, loamy sand, or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (es
Basin Design Parameters
Drainage Area
88,426.80
sq. . (on Ile and off -site drainage to the basin)
Impervious Area
30,927.60
sq.ft. (on -site and off -site drainage to the basin)
Design Storm
F,
inch (1.5 inch event for SA waters, I inch event for others)
Design Volume
2,688.17
c.f. (storage volume required)
Inlet Velocity
2.0
fps i
Drawdown Time
0.33
hours
3g
Basin Dimensions
iw'ul
BsinSize
110 ft.
x 35 ft. = 2,695 sq. ft. (sutface area at basin bottom)
Basin Volume Provided
5,390.00
c.f.
Minimum # of plantings
12 stems (400 stems per acre of bioretention area mininumt)
Total #of plantings provided
4 Trees 12 Shrubs (must be at least 3 shrubs for each Tree)
Basin Elevations pD 2 r 0'c A41
Temporary Pool Elevation 1 fmsl (elevation of the bypass/outlet structure
Planting Elevation 28.50 fmsl (elevation of the ground swface bottom)
Bottom Elevation 27.10 firs] (elevation of the bottom of the planting media)
SWU-Ixx 2.07
Page 1 of 3

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
- documentation is attached. !fa requirement has not been met, attach written justification. An incomplete submittal
ackage will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
_. X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
1 Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X I. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet and outlet are provided.
X p. An operation and maintenance agreement signed and notarized by the responsible party is provided.
This system (check one) X does ❑ does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-lxx 2.07
Page 2 of 3

3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
S. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight 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.
_ _Print name: Paul Spruill
i
itle: County Manager
Address: Beaufort County 121 West 3rd Street, Washington NC 27889
Phone:
Signatt
Date: % AVLJ /
Note: The legally responsible party should not be a homeowners association unless more than 50%of thelotshave been sold and a resident of the
II subdivision has been named the president. (�
`,, � - A A '
. W -- , a Notary Public for the State of Or.-h \.Arp tr miA
County of ge, I u )t— do hereby certify that Ro�"A :5,P�, \\
personally appeared before me this day of So.nt1e1 IT a? —z.C)07t1 and acknowledge the due execution
of the forgoing bioretention basin maintenance requirements. Witness my hand and official seal,
a 41,
W
zF,AA, oc)' � My commission expires � a ail 11
Sri rz, ;•Y : i
SWU-lxx 2.07
Page 3 of 3

Permit No.
(to be provided by
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality A;CE1Y0:®
STORMWATER MANAGEMENT PERMIT APPLICATION FORM MAR 2 9 2007
BIORETENTION BASIN SUPPLEMENT ®WQ-h'A,R®
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
L PROJECT INFORMATION
Project Name : Beaufort County Industrial Park — Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number:( 252 ) 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 3
(must match the DA # on the application & plans)
H. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (finsl).
Soils Report Summary
In -Situ Soil Type La — Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 25.50 ft. (Seasonal High Water Table elevation)
Planting Soil Texture sandy loam (must be a sandy loan, loamy sand or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area
108,900.00 sq.ft. (on -site and of -site drainage to the basin)
Impervious Area
39,204.00 sq.ft. (on -site and of -site drainage to the basin)
Design Storm
1" inch (1.5 inch event for SA waters, I inch event for others)
Design Volume
3,394.05 c.f. (storage volume required)
Inlet Velocity
2.0 fps
Drawdown Time
0.33 hours
Basin Dimensions
Basin Size
Varies ft. x Varies ft. = 2,512 sq. ft. (surface area at basin bottom)
Basin Volume Provided
aL c.f.
Minimum # of plantings
26 stems (400 stems per acre of bioretention area minimum)
Total #of plantings provided
Trees 26 Shrubs (must be at least 3 shrubs for each tree)
Basin Elevations
Temporary Pool Elevation 29.20 finsl (elevation of the bypassloutlet structure)
Planting Elevation 28.95 finsl (elevation of the ground surface bottom)
Bottom Elevation 27.60 finsl (elevation of the bottom of the planting media)
SWU-lxx 2.07
Page 1 of 3

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality RECCE l'H E-0
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
MAR 16 2007
BIORETENTION BASIN SUPPLEMENT
DWQ Stormwater Management Plan Review: DWQ-V9ARO
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils ort and 2 sets of plans and specific ions
showing all stormwater conveyances and system details.
1. PROJECT INFORMATION
n
Project Name : Beaufort County Industrial Park— Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number:
For projects with multiple basins, specify which basin this worksheet applies to:
(must match the DA p onr(he application
II. DESIGN INFORMATION -Attach supporting calculations/docum A t tion. Provide a
on actual field investigations conducted by a qualified individual. The soi r ort should inclu
references to the County soils maps when available. All elevations sha(1 e 'n feet' ee n s1p l(�
Soils Report Summary
In -Situ Soil Type La — Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soi 10
SHW'I' Elevation 25.50 ft. (Seasonal High Water Viable elevation)
Planting Soil Texture sandy loam (must be a sandy loam, loamy sand, at- loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area 108,900.00 sq.ft. (on -site and off -site drainage to the basin)
Impervious Area 39,204.00 sq.ft. (on -site and off -site drainage to the basin)
Design Storm 1" inch (1.5 inch event far SA waters, 1 inch event far others)
Design Volume 3,394.05 c.f. (storage volume required)
Inlet Velocity 2.0 fps
Drawdown Time 0.33 hours S
Basin Dimensions
2•�
Basin Size 88 ft. x 15 ft. = 1,320 sq. ft. (stnface area at basin bottom)
Basin Volume Provided 3,432 c.f.
Minimum # of plantings 13 stems (400 stems per acre of bioretention area mininnan)
Total #of plantings provided Trees 13 Shrubs (nust be at least 3 shrubs for each tree)
Basin Elevations
Temporary Pool Elevation 29.50 fmsl (elevation of the bypass/outlet structure)
Planting Elevation 29.20 frasl (elevation of the ground sinface botton)
Bottom Elevation 26.60 frisl (elevation of the bottom of the planting media)
SWU-Ixx 2.07
Page 1 of 3

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If a requirement has not been met, attach written justification. An incomplete submittal
package will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X 1. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet and outlet are provided.
X p. An operation and maintenance agreement signed and notarized by the responsible party is provided.
This system (check one) X does ❑ does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-Ixx 2.07
Page 2 of 3

3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
5. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight 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.
Print name: Paul Spruill
itle: County Manager
Address: Beaufort County, 121 West 3rd Street. Washington NC 27889
Phone:
Signatu
Date: .,., LL r AJW
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./t
I, L 15A . %jh,i - e_ , a Notary Public for the State of ��,1, C(XPO I., It A,
County of ,tr :� do hereby certify that �NOXX\ t) gt� \�
personally appeared before me this day of e! ) T r\UCL -v.l ZOOM , and acknowledge the due execution
of the forgoing bioretenti basin maintenance requirements. Witness my hand and official seal,
j0 A.
W ��rcn yt
My commission expires la a3�1\
.ti
SWU-Ixx 2.07
Page 3 of 3

_ Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality HIE
(%e' OVED
STORMWATER MANAGEMENT PERMIT APPLICATION FORM HAR 0 7 2007
BIORETENTION BASIN SUPPLEMENT DW0-! ARUCA
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : Beaufort County Industrial Park— Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number:( 252 ) 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 1
(must march the DA # on the application & plans)
II. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (fins]).
Soils Report Summary
i-Situ Soil Type La —Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 26.0 ft. (Seasonal High Water Table elevation)
Planting Soil Texture sandy loam (must be a sandy loam, loamy sand, or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area
Impervious Area
Design Storm
Design Volume
Inlet Velocity
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Minimum # of plantings
Total #of plantings provided
Basin Elevations
74,487.60 sq.ft. (on -site and off -site drainage to the basin)
30,927.60 sq.ft. (on -site and off -site drainage to the basin)
P, inch (1.5 inch event for SA waters, I inch event for others)
2,290.75 c.f. (storage volume required)
2.0 fps
0,33 hours
77 ft. x 35 ft. = 2,695 sq, ft. (surface area at basin bottom)
2,290.75 c.f.
12 stems (400 stems per acre of bioretention area minimum)
3 Trees 9 Shrubs (must be at least 3 shrubsfor each tree)
-emporary Pool Elevation
27.50
fmsl
(elevation of the bypass/outlet structure)
Planting Elevation
,. 27.25
fmsl
(elevation of the ground surface bottom)
Bottom Elevation
26.44
fmsl
(elevation ofthe bottom of the planting media)
SWU-Ixx 2.07
Page I of 3

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
—documentation is attached. If requirement has not been met, attach written justification. An incomplete submittal
ackage will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
_.. X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X I. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet and outlet are provided.
X p. An operation and maintenance agreement signed and notarized by the responsible party is provided.
This system (check one) X does 0 does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-lxx 2.07
Page 2 of 3

i
3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
5. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight 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.
Print name: Paul Spruill
. itle: County Manager
Address: Beaufort County. 121 West 3 d Street Washington NC 27889
Phone
Signal
Date:
Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the
subdivision has been named the president.
1, U t 5 A A . W %ye , a Notary Public for the State of 041,N �Arp t� nw
Countyof en 4 L� do hereby certify that RQ�&—69aA-A\ \�
personally appeared before me this day of nt ejrU� 7 3 Z�, and acknowledge the due execution
�p
of the forgoing bioretention basin maintenance requirements. Witness my hand and official seal,
`�'Sgy4DIIbb ems__...
t.5
�?� a° 3
r l
My commission expires 1 a a31 11
r
SWU-Ixx 2.07
Page 3 of 3

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality 'RECOVED
STORMWATER MANAGEMENT PERMIT APPLICATION FORM MAR 0 7 Z007
BIORETENTION BASIN SUPPLEMENT ®WQ_WAR®
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : Beaufort County Industrial Park — Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number: 252 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 2
(must march the DA # on the application & plans)
II. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
j i-Situ Soil Type La— Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 26.0 ft. (Seasonal High Water Table elevation)
Planting Soil Texture sand l� (must be a sandy loam, loamy sand, or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area 78,843.60 sq.ft. (on -site and off -site drainage to the basin)
Impervious Area 33,105.66 sq.ft. (on -site and off -site drainage to the basin)
Design Storm F, inch (1.5 inch event for SA waters, 1 inch event for others)
Design Volume 9,108.00 c.f. (storage volume required)
Inlet Velocity 2.0 fps
Drawdown Time 0.33 hours
Basin Dimensions
Basin Size 132 ft. x 23 ft. = 3,036 sq. ft. (surface area at basin bottom)
Basin Volume Provided 9,108.00 c.f.
Minimum # of plantings 28 stems (400 stems per acre of bioretention area minimum)
Total #of plantings provided 5 Trees 23 Shrubs (must be at least 3 shrubs for each tree)
Basin Elevations
Temporary Pool Elevation 28.98 fmsl (elevation of the bypass/outlet structure)
Planting Elevation 28.73 fmsl (elevation of the ground surface bottom)
Bottom Elevation 25.75 fmsl (elevation of the bottom of the planting media)
SWU-Ixx 2.07
Page 1 of 3

III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
-- aocumentation is attached. If a requirement has not been met, attach written justification. An incomplete submittal
ackage will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X I. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet.and outlet are provided.
X p. An operation and maintenance agreement signed and notarized by the responsible party is provided.
This system (check one) X does ❑ does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-Ixx 2.07
Page 2 of 3

3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
=- removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
5. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight 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.
Print name: Paul Spruill
f
i itle: County Manager
Address: Beaufort County, 121 West 3 s Street, Washington, NC 27889
Phone: [phone]
Signature:
Date: .Sa.,.17 ?.Z , 406 %
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. i1
1, Li sA f� ., a Notary Public for the State of wNpr �Qrn �t u n
Countyof do hereby certify that N0.k\ J oo;t \\
personally appeared before me this day of:5ankin r, t 73 , ?,W� and acknowledge the due execution
of the forgoing bio=%pQn basin maintenance requirements. Witness my hand and official seal
My commission expires 14� 1 -a-6 I �
SWU-1xx 2.07
Page 3 of 3

Permit No.
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality QCEC IEM D
STORMWATER MANAGEMENT PERMIT APPLICATION FORM MAR 0 7 20077
BIORETENTION BASIN SUPPLEMENT ®WQ_WA O
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a bioretention
area supplement for each proposed system, sealed design calculations, soils report and 2 sets of plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
Project Name : Beaufort County Industrial Park —Lot 9 Site Development
Contact Person: Richard B. Moore, P.E. Phone Number: 252 753-2139
For projects with multiple basins, specify which basin this worksheet applies to: Bioretention Area No. 3
(must match the DA # on the application & plans)
II. DESIGN INFORMATION -Attach supporting calculations/documentation. Provide a written soils report based
on actual field investigations conducted by a qualified individual. The soils report should include informational
references to the County soils maps when available. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
t i-Situ Soil Type La —Leaf silt loam
In -Situ Soil Infiltration Rate 0.20 in./hr. (the most restrictive soil layer)
SHWT Elevation 26.0 ft. (Seasonal High Water Table elevation)
Planting Soil Texture sandy loam (must be a sandy loam, loamy sand, or loam texture)
Planting Soil Infiltration Rate 3.0 in./hr. (estimated)
Basin Design Parameters
Drainage Area
Impervious Area
Design Storm
Design Volume
Inlet Velocity
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Minimum # of plantings
Total #of plantings provided
Basin Elevations
emporary Pool Elevation
Planting Elevation
Bottom Elevation
108,900.00 sq.ft. (on -site and of -site drainage to the basin)
39 204.00 sq.ft. (on -site and off -site drainage to the basin)
P, inch (I. S inch event for SA waters, I inch event for others)
4,680.00 c.f. (storage volume required)
2.0 fps
0.33 hours
89 ft. x 15 ft. = 1,335 sq. ft. (surface area at basin bottom)
4,680 c.f.
13 stems (400 stems per acre of bioretention area minimum)
Trees 13 Shrubs (must be at least 3 shrubs for each tree)
29.30 fmsl (elevation of the bypass/outlet structure)
29.05 fmsl (elevation of the ground surface bottom)
25.65 fmsl (elevation of the bottom of the planting media)
SWU-lxx 2.07
Page I of 3

III. REQUIRED ITEMS CHECALIST
Initial in the space provided to indicate that the following design requirements have been met and supporting
- -focumentation is attached. If a requirement has not been met, attach written justification. An incomplete submittal
ickage will result in a request for additional information and will substantially delay final review and approval of the
project.
Applicants Initials
X a. No vertical sand bed is proposed.
X b. The bioretention area is at least 40 feet by 15 feet.
X c. Sheet flow is provided at the inlet.
X d. A grass buffer strip is provided at the inlet.
X e. Seasonal High Water table depth is at least 2 feet below the planting elevation surface.
X f. Ponding depth of 6-12" is provided.
X g. In -situ soils have a minimum hydraulic conductivity of 0.52 inches per hour.
X h. An in-depth soils report is provided.
X i. The planting soil has a minimum hydraulic conductivity of 0.52 inches per hour and the type is noted
on plans.
X j. The planting soil meets minimum soil specifications per the latest version of the NCDENR Stormwater
Best Management Practices Manual, including a low phosphorus content to promote phosphorus removal.
(P-Index of 20 to 40 is optimal.)
X k. The ponded area will draw down in less than 24 hours. (calculations attached)
X I. A planting plan and schedule with species and densities is provided on the plans.
X m. Mulch layer and depth is specified on plans.
X n. Plan and section details for the bioretention area are provided. (including dimensions and elevations)
X o. Plan details for the inlet and outlet are provided.
X p. An operation and maintenance agreement signed and notarized by the responsible party is provided.
This system (check one) X does ❑ does not incorporate the use of an under -drain.
IV. BIORETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
Maintenance activities shall be performed as follows:
1. Inspect the bioretention area system for soil and mulch erosion, vegetated cover, and general condition after every
significant runoff producing rainfall event and at least monthly. Remove trash as needed.
2. Repair eroded areas immediately, re -seed and re -mulch as necessary to maintain good vegetative and mulch cover.
SWU-lxx 2.07
Page 2 of 3

3. Remove accumulated sediment as needed to maintain good infiltration. When the filtering capacity diminishes
substantially (e.g., when water ponds on the surface for more than 24 hours), the top few inches of material must be
-- removed and replaced with fresh planting soil material. The removed sediments should be disposed of in an acceptable
manner (e.g., landfill).
4. Replace, or add additional mulch as needed. Removal of the old mulch layer before applying the new layer is
recommended every 2 to 3 years.
5. Prune trees and shrubs and remove debris on an annual basis. Grassed vegetation should not exceed 6 inches in height.
6. Treat all diseased trees and shrubs whenever needed. Remove and replace all dead and diseased vegetation considered
beyond treatment every 6 months.
7. Replace support stakes yearly (in the Spring). Replace deficient stakes or wires whenever needed.
8. Soil testing shall be conducted annually to determine pH and any accumulation of toxins in the planting media. Lime
or other alkaline substances shall be applied as recommended per the soil test and toxic soils shall be removed,
disposed of properly and replaced with new planting media.
9. All components of the bioretention area system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the eight maintenance
procedures listed above. I agree to notify D WQ of any problems with the system or prior to any changes to the system or.
responsible party.
Print name: Paul Spruill
itle: County Manager
Address: Beaufort County, 121 West 3rd Street, Washington, NC 27889
Phone:
Signatu
Date: ,_-4 . LI ) I-W )
Note: The legally responsible party should not be a homeowners association unless more than 50%of the lots have been sold and a resident of the
/ subdivision has been named the president. `1 �t
I, L 1 SA a. tiki � , a Notary Public for the State of ` I �Le�• � 1, Qt,e 15 u6,
Countyof ejec.WLy- _,do hereby certify that rNQ4AX
personally appeared before me this day of _a3arAU4iSA -LOOrl , and acknowledge the due execution
of the forgoing bioretenti balm maintenance requirements. Witness my hand and official seal,
i
MAO,. 3G,EL ? <� My commission expires ja'a3\ 1\
• �.
y9q�0%
C0� _s
SWU-Ixx 2.07
Page 3 of 3