SW8040106_CURRENT PERMIT_20040618

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

OF W A 1 �? Michael F. Easley, Governor
QG William G. Ross Jr., Secretary
6CID
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E.,Director
5 Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
June 18, 2004
Mr. Edward E. Penuel
PO Box 12037
Jacksonville, NC 28546
Subject: Stormwater Permit No. SW8 040106
Coastal Contractors, Inc. Office Site
High Density Project
Onslow County
Dear Mr. Penuel:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Coastal Contractors, Inc., Office Site on April 1, 2004. 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. SW8 040106 dated June 18, 2004, for the construction of the subject
project.
This permit shall be effective from the date of issuance until June 18, 2014, 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 150E of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Linda Lewis, or me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSSIarL S:1WQSISTORMWATIPERMIT1040106.jun04
cc: Dave Newsom, P.E., Crystal Coast Engineering
Onslow County Building Inspections
Linda Lewis
Wilmington Regional Office
Central Files
N. C. Division of Water Quality 127 Cardinal Drive Extension [phone]
Wilmington Regional office Wilmington. NC 28405 [phone] Fax
Customer Service
1 800 523-7748
NCDEh'R

State stormwater Management Systems
Permit No. SW8 0401,06
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
Edward E. Penuel
Coastal Contractors, Inc., Office Site
Onslow County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules"}
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the.Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until June 18, 2014, 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 3 of this permit, the Project Data Sheet. The
stormwater control has been designed to handle the runoff from 201,198 square
feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans. The built -upon area for the future
development is limited to 126,747 square feet.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.

v LM is .J wi i i trro LUI IvId[idytimin oys[ems
Permit No. SW8 040106
6. The following design criteria have been approved for the wet detention pond and
must be maintained at design condition:
a. Drainage Area, acres: 5.57
Onsite, ft2: 242,433
Offsite, ft2: 0
b. Total Impervious Surfaces, ft2:- 201,198
C.
Design Storm, inches:
1.0
d.
Pond Depth, feet:
5.0
e.
TSS removal efficiency:
90%
(A 30' vegetated filter is required if TSS removal is 85%)
f.
Permanent Pool Elevation, FMSL:
22.0
g.
Permanent Pool Surface Area, ft2:
14,464
h.
Permitted Storage Volume, ft3:
16,229
i.
Temporary Storage Elevation, FMSL:
23.06
j.
Controlling Orifice:
2.0"0 pipe
(The orifice must drawdown the
1" volume in 2-5 days)
k.
Permitted Forebay Volume, ft3:
9,698
1.
Receiving Stream/River Basin:
Northeast Creek 1 White Oak
M.
Stream Index Number:
WOK02 19-16-(0.5)
n.
Classification of Water Body:
"SC NSW"
II. SCHEDULE OF COMPLIANCE
-.
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.

v .caw viv1I I It,u LoI IVIGI ICA% IU_I I IU I11 JrDtGI 110
Permit No, SW8 040,106
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. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
c. The failing water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in this pond is 116 horsepower.
6. The facilities shall be constructed as shown on the approved plans. 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.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. 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.
9. Access to the stormwater facilities shall be, maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.

State 5tormwater Management Systems
Permit No. SW8 040106
13. 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.
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
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 143-215.6A to 143-215.6C.
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) having jurisdiction.
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 permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 18th day of June, 2004.
NORTH CAROLINA ENVIRONMENTAL_ MANAGEMENT COMMISSION
,�. Alan W. K imek, R., Director`
- C3i`1 Division of Water Quality
By Authority of the Environmental Management Commission
o. r ..r -7

state stormwater management Systems
Permit No. SW8 040106
Coastal Contractor's, Inc., Office Site
Stormwater Permit No. SW8 040106
Onslow Countli
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
SEAL
Signature
Registration Number
Date

State Stormwater Management Systems
Permit No. SW8 040106
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.
1 5. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Onslow County Building Inspections

I.
Date Received Fee Paid Permit Number
State of North Carolina
Department of Enviro=ent and Natural Resources
Division of Water Quality
STOR-',Yf `ATER iNLA-NAGaN ENT PERIN= APPLICATION FOP. -tit
Trris for n may be photocopied for use as an original
GENETPUL F0RIikTI0N
i. Applicants name (specify the name of the corporacon, individual, etc. who owns the project):
Edward E. Penuel
? Print Owner/Signing Official's name and tine (person legally responsible for facility and co=iiance):
Edward E. Penuel, Owner
3. ylaiIing Address for person listed in item 2 above:
P.O. Box 12037
Jacksonville State: NC gip: 28546
Feleohone Number: ( 910 347-1479
?:oject Name (subdivision, facility, or establishment name -should be consistent wita`t project name on
plans, soe�.�Catiom, letters, ope_adon and mainte_nance ag=e=eats, etc.):
Coastal Contractors Inc. - Office Site
Location of Project (sweet address):
US Highway 17 (New Bern Highway) -immediately South of Morton Construction Co.@3950
C,tv Jacksonvi I le Countv:
Orislow "'erjern
5. 7irec_ons to project (mom neares, aior inters, —on):
From intersection of US Highway 17 & NCSHighway 24, North on US Highway 17
approximately miles si e
7.Latr::de:34°48'05"
L.On?itcde:
77°20'54"
Cr project
3. Contact person who can answer auesLons about Lhe project
Name: John L. Pierce & Associates P.A. TeleghcnelNuziber: (_910 ] 346-9800
II. PER-=. ENT 0RMATIOIN:
7. Spedr'y whether project is (check one): XX New Renewal Modification
Form SVfU-101 Version 399 Page I of -t

2. If this application is being submitted as tt Wsult of a renewal or modification to an existing permit, list the
ecistiStg permit number II��I and its issue date (if known)
3. SoecJy the tape of project (check one):
Low Density XX High Density Redevelop General Permit Other
?dritianal Project Requirements (check aaplicable biazaks):
—C_A.LA. Major XX Sedimentation/Erosion Control �4*4/=01 Per -;tit XX NPDES Sto=water
Information on required state pe=mits can be obtained by contacting Lhe Customer Service Center at
III. FROJECF I3-4F0riMAT-I0N
I. In the space provided below, suz mar ze how stormwatez will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater manage-Ment for the project .
Stormwater to be collected and treated in stormwater pond
2. Stormwater runoff 1lom this project drains to the
(339 625 s.f.)
3. Total Project Area: 7.86 acres acres
3. How many drainage areas does the project, have? 2
White Oak
River basin.
?. Project Built Upon Area: 59.2 °a
6. Complete the following information for each drainage area. If there are more t'ian two drainage areas in the
project, attach an additional sheet with the inior - on for each area provided in,'the same foratat as beiow,
y:sa
I Recaving Stream Name
I Northeast Creek I
Northeast Creek
Receiving Stream Class
-
I SC NSW I
_
SC NSW
Drainase Area
5.57
2.23
�.ris:;nP I�,pe_*viaus Az
I-
-�-
I 1
-
Froposen Imper✓ ous*Area
I 201,198 s.f. I
-0-
% Immr ious' Area (total)
I 83.0% I
-0-
3V
on=iieBuilciin
I 4800
S.f.
I C}n site Scee
I 17 , 312
s.f.
I -
-On--site Parkin g
I 52,069
s.f.
- I
On -site Sidewalks
j 270
s.f.
-0-
10the-ron.-site (future)
I 126,747
s.f.
I -
IOf1-­5ite
I -0-
I
- -
Total: 201 ,
s •
i
Total:
mpenncus area is defined as the built upon area inciudfno, pug not f¢mited lo, buildings, roads, parking areas,
side.valks, rave; areas, efc.
Fore S'WU,-I01 Version 5.99 Fage 2 oc 4

7. Ho�v was the off -site ianpervious area listed above derived? N/A
PI. DEED RESTRICTIOiNS A --ND PROTECTI-VE COVEi A-'N 5
the following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, ou=arcels and future development prior to the sale of any lot. Lf lot sizes vary significantly, a
table listing each lot number, size and the aIlowable built -upon area for each lot must be provided as an
attachment.
The following, covenants are intended to ensure ongoing compliance With state stormwater management permit
number as issued by the Di, lion of Water Quality. These covenants may
not be changed or de:eted without the consent of the State.
Z. No more than square feet of any lot shall be covered by structures or imver,ious materials.
fmpe; pious marer^aIs Mrlude asphalt, o avel, cony. ete, brick, stone, slate or similar materuzl but do not inc?ude wood
decking or the water surfacz of swimmrng pools.
3. SwaIes shall not be jUled in, piped, or altered except as necessara to provide drive -.jay crossings.
a. Built-unon area in ewcess of the permitted amount rewires a state stormwater management permit modification prior to
canst7-uction.
5. All pe mitted r-.inar from Qut,�arces ar��uf-zre developme xt shaI2 be directed into tit pe -ri:fed s4ornu;are- con:; of
system- i nese canney`.ons to the swrmware.- control system shall be performed in a manner that maintains the
integrity and pz 1'or a= of the sysrem as permitted.
By your signature below, aou certLiy that dire recorded deed rest:---cdors and protectve covenants for this Project
shall include all she avvliCbie items recuired above, that the covenants will be binding on all parties and
pencns claiming under them, that they will run with, the land, that the required covenants cannot be changed or
deleted without concar_ence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLE_IN EN i FORMS
ire aovkable smote stc=vater management pe--tit supplement fomi(s) listed below must be submitted for
each EMI' srecified for this projec- Contact the Stormwater and General Fe ---nits Unit at [phone] for the
status and availability of these forms.
Fort 5'W u-102 `Net Detention Basin Supplement
Fomkt SvVU-10a Inaitraton Basin Supplezr ent
FormSVVU-104 Low Density 5u-ovlement
prat FVV u -I05 Curo Cutlet Svstem Suvule..ment
Form 7-4V-U--106 Off -Site S5 stem Sunclemeztt
Fore SWli-107 0mnde_sound Infiltration Trench Sucole=ent
nrrn SWU-108 Neuse River E;asin Suppie=e-nt f
Form Fff -109 Innovative Best Mariagament Practce Supplemer t
Form SWU-I01 Version 3.99 Pale 3 of 4

VI. 5L)-5MITTAL REQUIREMENTS
Orly complete application packages will be accepted and reviewed by the Division of Water Quality (DVVQ),
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. :
: -' `Iru s
• Original and one copy of the:Stormwater Mariaenient Pe:*mit 4plicat=on corm'
• One copy of the applicable Supplement Forms) for each 3MI'
• ;-lit application processing fee of $420 (payanle to i CD1::N
• Detailed narrative description of stormwater treatment/manag--ment
• Two copies of plans and specifications, including:
- Development/Project name
- Engineer and firm
Legend
- North ar_ow
-'tale
Revision number & date
- Mean high water line
- Dimensioned property/project boundar,,
- Location nzaa wit� named s4eets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwate_r control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage'(including off -site), drainage easements, pipe sizes, runoff calcalations
- Drama-•- areas delineated
- Vegetated buffers (where required)
VEL AGENT AUTHORIZATION
if you w�sh 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): John L. Pierce & Associates P.A.
Madinz Address: P.O. Box 1685
C'I. V Jacksonville State: NC Zip: 28540
?hone: ( 910 ) 346-9800
4•
Via AFFLIC.Asti-I S C- =CATION
Fax: ( 910 ) 346-1210
F -
I, (print or q; ve name of persan listed-,n Ger ..zl information, item ?) _Edward E. Penue l _
Cerar that Ehe inlormka n irtcIudea on this pe nit'ap£ilcadon ford is, t0 the best or my lknowle `--, cor-rect and.
That =1e Drciect will be cons-macted :n conformance wlt:n the approved plans, that the rec red deed res,i-C=Ors
and proteC'YJe c3v6nants wEd be recorded, and t'Lh at the proposed project compiles with the recuire�-.tents of 15
Signature:
Date:
Form SW[.i-101 Version 3.99 Page 4 of 4

Permit vo.
(to be provided by DWQ}
� State of North Carolina
Department of Environment and Natuzal Resources
Division of Water Quality
S T OIZ. fv5 Ai`ER i\qLAN.AGEiv[ET T PERMIIT APFLICATT1 ON FORT
WET DETENTION BASIN SUPPLEMENT
This fain „zaa be �hotcc_-r,pied for use as an on,Ti'nal
DWO Storrnwater Nfanagernent Plan Review:
A complete stomwater management plan submzttai includes an application form. a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT L,N_'ORtiL-M0N
Project Name: Coastal Contractors Inc. Office Site
Contact Person: John L. Pierce & Associates P.A. phone Number: ( 910 ) 346-9800
For projects with muitipie basins, specifywhich basin this worksheet applies to: 1
elevations
Basin Bottom Elevation 17.00 ft. (� tour of the basin)
Permanent Pool Elevation 22.00 - (elevation or the orifice)
Temporary Pool Elevation 23.06 ft. (elevation of the discharge stracture overflow)
areas
°er-uanent Pool Surface Area 14,464 sq. fr_ (,evatersurface area at the orifice eleval-Lon)
Drainage ,area 5.57 ac. (on -site and off -site drainage to the basin)
Innerrious Area _ 4-62 ac. (on -site and off -sire drainage to the basin)
volumes
Permanent Pool Volume
48,061
Ternpo=i Pool Volume
16,229
rombav Volume
9,698
Other aaramerers
SA/DAI
5.94
Diaanete: of Orifice
1.00
Design 1� ainfall
lit
Design TSS Removal'-
90%
Cu. ft. (combined volume of main basin and forebay)
cu. It. (volume detained above the permanenr pool)
cu. fr. (approximately 207o of total volume)
(surface area to drainage area ratiofrom DWO table)
in. (2 to S da,J ternporar; pool draw -down required)
in.
% (minimum. 85% required)
Farm M- IO2 Rev 3.99 Page 1 of 4

Fool s'
I Wbea using the Division SA/DA tables, the correct SAIDA ratio for permanent pool sizing should be computed based upon dye
ac-�Ual imperlious qa and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table ewes.
'- In the 20 coastal counties, the requirement for a vegetative filter may be waived if tine wet detention basin is designed to provide
901%TSS removal. The tiCDENR SNIP manual provides design tables for both 35% TSS removal and 90% TSS removal_
II. REQUIRED ITEMS CHECKLIST
The following chec. st outlines design requirements per the Storrnwater Best Nfanagement Practic_s Manuai
(N.C. Derarameni of Environment. Htaith and Narural Resources, February 1999) and .administrative Code
Section. 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Storanwater Nfanagement Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
AppIic Initials
-, a.
b.
i C.
d.
f.
The permanent pool depth is between 3 and 6 feet (required minimum of') feet}.
The forebay volume is approximately equal to 2017c of the basin volume.
The temporary pool controls runoff from the design storm event.
The temporary pool craws down in ? to 5 days.
If required, a 30-foot vegetative filter is provided at the outlet (include non-erosve flow
calculations)
The basin Iength to width ratio is greater than 3.1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6: I or less (show detail).
Vegetative cover above the permanent pool elevation is specified.
j. A trash race or similar device is provided for both the over low and orifice.
It. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
1, If bile basin is used for sedL-nent and ereslon ct7z=ol const ucLLon. clean out or the
basin is spe:-ified prior to use as a wet detention basin.
m_ A specified which will drain the basin foc maintenance or an emer encv.
boo yn -P - -
III. WET DETENTION BASLV OPERATION A -N—D NLAINYMNANCE AGREETNE-N-T
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
venerated filter if one is provided.
This system (check one) 0 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay.
Form SW'U-102 Rev 3.99 page 2 of 4

Maintenance activities shall be performed as follows:
,aster every significant ninoff producing rainfall event and at least monthly:
a. Inspect t1ae wet detention basin system rot sediment accumulation, erosion, trash accumulation.
vegetated cover, and general condition.
b. Check and clear the orifice of any obstrictions such that drawdown of the temporary pool occ`rs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover. mow ve,eta.tive
cover to maintain a maximurn height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 757o of the original design depth (see diagFam below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wet detention basin or stream, etc.).
Tile measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments-
When'the permanent pool depth reads .1_75 feet i.n the main pond, the sediment shall be removed.
When the permanent pool depth reads 3.75 feet in the forebay,. the sediment shall be remove!
BASLti DLA. GR-ICI
(Jill in :he blanks)
P=rraneat Poo[ Elevation 22.00
�— A
Sedureat RemOvai E? 18.25 .7 0
e __ Sedimeat Removal Eie•rado. 18.25 75%
3atrom Ele adcn 17.00 Fa - -_ ________ ___
V Bo¢om Elevation 17.00+ �:
FOREBAY
N.LUN POND
5. Remove cartaiis and odher indigenous wetland plants when they cover 50% of the basin surface. Taese
plants shall be encouraged to grow along the vegetated shelf and forebay bezin.
6. If the basin must be drained for an emergency or to Perform maintenance, the flushing of sediment
through the emergency drain shall be minirnized to the maximum extent practical_
Farm SWU-102 Rev 399 Page 3 of 4

�. 411 cornporients of the wet detention basin system small be maintained in good working order.
I ack iowledge and agree by my signature below twat I a-rn responsible for the penorrnance of the seven
maintenance procd,ures listed above. I a4ree to noify DWQ of any probierris with the systern or prior to any
char,4zes to the system or responsible parry.
Print name: Edward E. Penuel
Title: Owner
Address: P.O. Box 12037 Jacksonville NC 28540
Phor.
Sign.
Date
Note: The Iegady responsible parry should not be a homeccv-hers association unless more than 50"a of the lots Have been scid and
a resident of the subdivision has been named the pr7sideat_
a `iotary Public for the State of &D (ilk 6�2l6U21iZy ,
County of .0 �r4.tn) , do hereby cerdfy that GU
personally appeared before me this �� G� day of �P� _ and acknowledge di-, due
execution of the forgoing wet detennon basin maintenance reauiremenrs- Witness any hand and official seal.
lriy commission expires 1 C�'L(1�_
Form SWU-102 Rev 3.99 Pave 4 of 4

I
Coastal Contractors, Inc. — Office Site
Onslow County
Stormwater Permit No. SW8 040106
Designer's Certification
I, N )�DVV) , as a duly registered �P,S � e in
the State of North Carolina, having been authorized to observe (periodically 1 deekly 1
full time) the construction of the project,
kCA � (0 JCCA CL(--s: , -rv, c - - o 41
(Project)
for (nj(U_�oC5 I (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.
Required Items to be checked for this certification to be considered complete are on
page 2 of this form.
Noted deviations from approved plans and specifications:
Signature
Registratic
Date
G I
cc: NCDENR DWQ Wilmington Regional Office
JUN 3 0 2011
Page 1 of 2

Coastal Contractors, Inc. — Office Site
Onslow County
Stormwater Permit No. SW8 040106
Certification Requirements:
J1.
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.
The the
outlet/bypass structure elevations are per approved plan.
y 5.
The outlet structure is located per the approved plans.
6.
Trash rack is provided on the outlet/bypass structure.
7.
All slopes are grassed with permanent vegetation.
y 8.
Vegetated slopes are no steeper than 3:1.
V 9.
The inlets are located per the approved plans and do not cause short-
circuiting of the system.
�10.
The permitted amounts of surface area and/or volume have been
provided.
�11. •„Required drawdown devices are correctly sized per the approved. plans.
�`;r.`12 =t �:All'�equired design depths are provided. •
13. i :.,:All required parts of the system are provided, such as a vegetated shelf,
'and a forebay. . •, ,
,1,4 : ,,W7hea dirhensions of the system, as shown on the approved plans, are
• ,. - . Orouided.
Page 1 of 2

+ 8817-3 Freedom Way
Hubert, N.C. 28539
Tel: [phone]
Fax: [phone]
I
I
To: Ms. Angela Hammers
NCDENR - DWO
127 Cardinal Drive Ext,
Wilmington, NC 28405
From: Jeanie for David Newsom
Rec SW8 040106 Date: June 29, 2011
Coastal Contractors, Inc. — Office Site
❑ Urgent ❑ For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle
Attached:
One (1) "original' Engineers Certification for Stormwater System
Comments:
xC: File