HomeMy WebLinkAboutSW7090812_CURRENT PERMIT_20091020STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATEllirl�i�J
YYYYMMDD
®R,:r
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
October 20, 2009
Mr. W.A. Tony Duvall, Fire Chief & Registered Agent
Roanoke Island Volunteer Fire Department, Inc.
PO Box 1033
Mantel NC 27954
Subject: Stormwater Permit No. SW7090812
Roanoke Island Volunteer Fire Department
(Wanchese Station)
High Density Project
Dare County
Dear Mr. Duvall:
The Washington Regional Office received a complete Stormwater Management Permit Application for
Roanoke Island Volunteer Fire Department (Wanchese Station) on August 17, 2009. Staff review of
the plans and specifications has determined that the project, as proposed, will comply with the
Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 21-11.1000. We are
forwarding Permit No. SW7090812 dated October 20, 2009, for the construction of the subject
project.
ty/3o/XI
This permit shall be effective from the date of issuance until October 20, 2019, 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 adfudicatory 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, 6714 Mail
Service Center, Raleigh, NC 27699-6714. 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 Scott
Vinson, or me at (252) 946-6481.
All
,
AI g—
Regional Supervisor
Surface Water Protection Section
AH/sv: S:\WQS\STORMWATER\PERMIT\SW7090812
cc: Mike Morway, PE — Albemarle & Associates
Dare County Building Inspections
;,,,Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: w .ncwaterqual ty.org One
943 Washington Square Mall Phone: 252-946-6481 1 FAX: 252-946-9215 North Caro t l n it
Washington, NO 27889 FAX: 252-946-9215 q//f
An Equal Opportunity\ Affirmative Action Employer Naturally
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State Stormwater Management Systems
Permit No. SW7090812
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
Roanoke Island Volunteer Fire Department, Inc.
Roanoke Island Volunteer Fire Department (Wanchese Station)
323 Old Schoolhouse Rd. in Wanchese, Dare County
FOR THE
construction, operation and maintenance of one infiltration basin in compliance with the
provisions of Session Law 2008-211 and 15A NCAC 2H .1000 (hereafter referred to as the
"stormwater rules') and the approved stormwater management plans and specifications
and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until October 20, 2019, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.8 on page 3 of this permit. The stormwater control
has been designed to handle the runoff from 27,497 square feet of impervious area.
3. This basin must be operated with a 30 foot vegetated filter.
4. The tract will be limited to the amount of built -upon area indicated in Section 1.8 on
page 3 of this permit, and as shown on the approved plans.
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.
The runoff from all built -upon area within the permitted drainage area of this project
must be directed into the permitted stormwater control system.
Page 2 of 7
State Stormwater Management Systems
Permit No. SVV7090812
7
0
The built -upon areas associated with this project shall be located at least 50 feet
landward of all surface waters.
The following design criteria have been permitted for the infiltration basin and must
be provided and maintained at design condition:
a. Drainage Area, ft2:
b. Total Impervious Surfaces, ftz:
C. Design Storm, inches:
d. Basin Depth, feet:
e. Bottom Elevation, FMS�:
f. Bottom Surface Area, ft :
g. Bypass Weir Elevation, FMSy
h. Permitted Storage Volume, ft
i. Type of Soil:
j. Expected Infiltration Rate, in/hr:
k. Seasonal High Water Table, FMSL
I. Time to Draw Down, days:
M. Receiving Stream/River Basin:
n. Stream Index Number:
o. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
40,808
27,497
1.50
1.00
8.00
2,900
9.00
3,450
Johns Loamy Sand
0.60
6.00
0.70
Broad Creek / Pasquotank
30-21 —7
"SA; HQW"
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 bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
reports will indicate the date, activity, name of person performing the work and what
actions were taken.
5. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance and inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, and the maintenance
work performed at each inspection.
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.
Page 3 of 7
State Stormwater Management Systems
Permit No. SW7090812
7. If the stormwater system was use
d
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.
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 at all times.
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
This permit is not transferable to any person or entity 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 completed Name/Ownership Change form to the
Division of Water Quality, signed. by both parties, and accompanied by the
appropriate documentation as listed on page 2 of the form. 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.
Page 4 of 7
State Stormwater Management Systems
Permit No. SW7090812 "
3. 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.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
6. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated. The
permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does
not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
controls must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit.
10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit as
allowed by the laws, rules and regulations contained in Session Law 2008-211, Title
15A NCAC 2H.1000, and NCGS 143-215.1 et. al.
11. The permittee shall notify the Division in writing of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. This permit shall be effective from the date of issuance until October 20, 2019.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
Permit issued this the 20th day of October, 2009.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A L-
fay'
Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No. SV 7090812
Page 5 of 7
State Stormwater Management Systems
Permit No. SW7090812
Roanoke Island Volunteer Fire Department (Wanchese Station)
Stormwater Permit No. SW7090812
Dare County
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:
Signature
Registration Number
Date
SEAL
Page 6 of 7
State Stormwater Management Systems
Permit No. SW7090812
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.
6. The bypass structure weir elevation is per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the 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. All required design depths are provided.
13. All required parts of the system are provided.
14. The required system dimensions are provided per the approved plans.
cc: NCDENR-DWQ Regional Office
Dare County Building Inspections
Page 7 of 7
5
DWQ USE ONLY
' Date Received
Fee Paid
Permit Number
S
Applicable ales: ❑ Coastal SW -1995 ❑ Coastal SW - 2008 ❑ Ph II - Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Flan
❑ Other WQ Mgmt Plan: s/n/613
State of North Carolina Z �'kfIC„
Department of Environment and Natural Resources
Division of Water Quality AUG 17 2009
STORMWATER MANAGEMENT PERMIT APPLICATION FORMo,f » p�
This form may be photocopied for use as an original La
T_ (-FNFRAT.TNFORMATTON
V (
1. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Roanoke Island Volunteer Fire Department (Wanchese Station)
2. Location of Project (street address):
323 Old Schoolhouse Road
City:Wanchese County:Dare Zip:27981
3. Directions to project (from nearest major intersection):
From the intersection of US64 & US264, proceed south alone NC345. Veer right at the fork of NC345 (Mill
Landing road -left) and SR1168 (Old Wahart Road -right). Proceed approximately 0.4 miles and take aleft onto
SR1145 (Old Schoolhouse Road). The existing fire station is approximately 600 down the street. on the right.
4. Latitude:35° 50' 34" N Longitude:75° 38' 26" W of the main entrance to the project
II. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ®New ❑Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit number , its issue date (if known) , and the status of
construction: []NotStarted ❑Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stormwater System []Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major
❑NPDES Industrial Stormwater
®Sedimentation/Erosion Control: 2 ac of Disturbed Area
❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit.
Form SWU-101 Version 07July2009
Page I of 6
Ill., CONTACT INFORMATION
1. a. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Roanoke Island Volunteer Fire Department , �r,c .
Lh,efF
Signing Official & Title:W.A. "Tony" Duvall: FireA& Registered Agent
b. Contact information for person listed in item la above:
Street Address:323 Old Schoolhouse Road
Mailing Address (ifapplicab(e)TO Box 1033 /
City:Manteo
Phone: ( ) 47S — 2.34mo
State:NC Zip:27981
State:NC Zip:27954
Fax: ( 2.52 1 4'1'3410
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official &
b. Contact information for person listed in item 2a above:
Street Address:
State:
Mailing Address (if
City: State:
Phone: ( ) Fax:
Email:
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:
Signing Official & Title:
b. Contact information for person listed in item 3a above:
Mailing Address:
City: State: Zip:
Form SWU-101 Version 07July2009 Page 2 of 7
k
Phone:
Fax:
4. Local jurisdiction for building permits:
Point of
IV. PROJECT INFORMATION
Phone #:
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
Runoff will be collected by curb and gutter and swales and be directed to a closed collection will convev the
runoff to an infiltration basin at the rear of the propqrty. Runoff in ecess of the 1.5" deisgn volume will be
directed to a vegetative filter along the front of the vroperty and then released in the swale along the r/w.
2. a. If claiming vested rights, identify the supportingdocuments provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUD Approval Date:
❑ Valid Building Permit -Issued Date:
❑ Other: Date:
b.Identify the regulation(s) the project has been designed in accordance with:
❑ Coastal SW -1995 ❑ Ph II - Post Construction
3. Stormwater runoff from this project drains to the PaNuotank River basin.
4. Total Property Area:1,26 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) - Total Coastal Wetlands Area (5) -Total Surface Water Area (6) = Total Project
Area+:1.26 acres
Total project area shall be calculated to exclude the followin : the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NM line or Mean Hi$h Water
(MHW) line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line may
be included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 56.8 %
9. How many drainage areas does the project have?2 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Form SWU-101 Version 07July2009 Page 3 of 7
Basin Information
Drainage Area 1
Drainage Area 2
Drainage Area _
Drainage Area
Receiving Stream Name
Broad Creek
Broad Creek
Stream Class *
SA, HQW
SA, HQW
Stream Index Number *
30-21-7
30-21-7
Total Drainage Area (so
40,808
14,266
On -site Drainage Area (so
40,808
14,266
Off -site Drainage Area (sf)
0
0
Proposed Im rvious Area" (so
27,497
3,802
% Impervious Area** total
67.4
26.7
Impervious— Surface Area
Drainage Area 1
Drainage Area 2
Drainage Area _
Drainage Area _
On -site Buildings/Lots (so
6,500
0
On -site Streets (so
0
0
On -site Parking (so
17,052
610
On -site Sidewalks (so
48
0
Other on -site (so
0
0
Future (sf)
1 3,224
1 0
Off -site (so
0
0
Existing BUA*** (so
673
3,192
Total (so:
27,497
3,802
* Stream Class and Index Number can be determined at: http✓/h2o.enr.state.ne.u4 ms/reports/reportsWB.html
** Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
*** Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that
is to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. AutoCAD
(See sheet C201)
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
fromh!tp://h2o.enr.state.nc.us/su/bmp forms.htm.
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. A detailed application instruction sheet and BMP
checklists are available from hftp://h2o.enr.state.nc.us/su/bmp_forms.htm. The complete application
package should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating
project on the interactive online map at http://h2o.enr.state.nc.us/su/msi maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for
each submitted application package from htty://h2o.enr.stabL.nc.us/su/bmp forms.htm.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form. Wsl/\
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants N jl�
Form. (if required as per Part VII below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M
agreements) for each BMP.
4. Permit application processing fee of $505 payable to NCDENR. (For an Express review, refer to Mst'\
hgp://www.envhelp.org/RaM/onestomxpress.htmi for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
Form SWU-101 Version 07July2009 Page 4 of 7
5. ,A detailed narrative (one to two pages) describing the stormwater treatment/managementfor Kst \
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the h-sFj\
receiving stream drains to class SA waters within 1h mile of the site boundary, include the'/z
mile radius on the map.
7. Sealed, signed and dated calculations. KSJ\
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including: M-SC\
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
I. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
I. Details of roads, drainage features, collection systems, and stormwater control measures.
in. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify �S
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO Schedule a site visit for DWQ to verify the SHWT prior
to submittal, (910) 796-7378.)
10. A copy of the most current property deed. Deed book: 1230 Page No:114 MSK
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC �N�{-
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item la, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
h!W://www.secretaKy.state.nc.us/ColRorations/CSearch.asl2x
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http://h2o.enr.state.nc.us/su/bmp forms.htm#deed restrictions. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, that the covenants will be binding on all parties and persons claiming
under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the NC DWQ and that they will be recorded prior to the sale of any lot.
Form SWU-101 Version 07Ju1}2009 Page 5 of7
VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Michael 1. Morway, PE
Consulting Firm: Albemarle & Associates, Ltd.
Mailing Address:PO Box 3989
City:Kill Devil Hills State:NC Zip:27948
Phone: (252 ) 441-2113
Emall:mikem@albemarleassociates.com
Fax: (252 ) 441-0965
D(. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item Ib) to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Date:
a Notary Public for the State of . County of
do hereby certify that personally appeared
before me this _ day of
and acknowledge the due execution of the application for
a stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-101 Version 07Ju1y2009 Page 6 of
X. . APPLICANT'S CERTIFICATION
\\
I, (print or type name of person listed in Contact Information, item 2)
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of the
applicable stormwater rules under 15A NCAC 21-I.1000, SL 2006-246 (Ph. II - Post Construction) or SL 2008-211.
6 16 ) '-I- o ',
Lln U /J
I, ftc) ,a rct j �, a Notary Public for the State of A" t NG. , County of
y.j Ate! e— do hereby cettify that Q • A . �_ personally appeared
before me this /ziay of owledge the due executi of the application for
a stormwater permit. Witness hand and official seal,
N
M. GRAY PUBLICUNTY, NC
SEAL
My commission expires—9-/01-1047
Form SWU-101 Version 07Ju1y2009 Page 7 of
Permit No.<5W 7o % DO /-2
((o be provided by DWq)
0 0G W AreI?
®�A/�
�i/"� STORMWATER MANAGEMENT PERMIT APPLICATION FORM o
NCDENR 401 CERTIFICATION APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part III) must be printed, filled out and submitted along with all of the required information.
Contact Person
Phone Number
Date
Drainage Area Number
Roanoke Island Volunteer Fire DepatInem - Wanchese Station
.Michael J. Morway, PE
252441-2113
3-Aug
1
II. DESIGN INFORMATION
Site Characteristics
Drainage area
40,808.00
it'
Impervious area
27.497.00
d"" 7
N If
—" E
Percent impervious
0.67
%
Design rainfall depth
1.50
in
Peak Flow Calculations
AUG 17 0n 009
1-yr, 24-hr rainfall depth
3.17
in
1-yr, 24-hr intensity
0.13
in/hriflf//_?Al
�ll
Pre -development 1-yr, 24-hr discharge
0.06
ft3/sec
as �N VV �V °v�'
Post -development 1-yr, 24-hr discharge
0.09
831sec
Pre/Post 1-yr, 24-hr peak Flow control
0.03
ft3lsec
Storage Volume: Non -SA Waters
Minimum design volume required
3,348.00
it'
Design volume provided
3,450.00
f13
OK for non -SA waters
Storage Volume: SA Waters
1.5" runoff volume
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Minimum required volume
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Basin Design Parameters
Drawdown time
Basin side slopes
Basin bottom elevation
Storage elevation
Storage Surface Area
Top elevation
Basin Bottom Dimensions
Basin length
Basin width
Bottom Surface Area
ft3
ft3
ft3
ft3
ff3
Johns Loamy Sand
0.60 inthr
6.00 fmsl
0.70 days
3.00
:1
8.00
fmsl
9.00
first
4,000.00
ff2
9.50
Ind
100.00 it
40,00 It
2,900.00 ftz
OK
OK
OK
Form SW401-Infilration Basin-Rev.4 Pens I. a II. Design Summary, Page 1 of 2
Permit No.
(to be pmWded by DWQ)
Additional Inforrnation
Maximum runoff to each inlet to the basin?
0.95 ac-in
OK
Length of vegetative filter for overflow
30.00 It
OK
Distance to structure
55.00 ft
OK
Distance from surface waters
>3000 ft
OK
Distance from water supplywell(s)
195.00 ft
OK
Separation from impervious soil layer
>2 ft
OK
Naturally occuring soil above shwt
2.00 ft
OK
Bottom covered with 4-in of clean sand?
y (Y or N)
OK
Proposed drainage easement provided?
n/a (Y or N)
OK
Capures all runoff at ultimate build -out?
y (Y or N)
OK
Bypass provided for larger storms?
y (Y or N)
OK
Pretreatment device provided
op inlet sump, stilling basin
Form SW401-Inftlbabon Basin-Rev.4 Parts I. a II. Design Summery, Page 2 of 2
;.
Permit No.
(to be provided by DWQ)
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials
Sheet No.
1. Plans (1' - 50' or larger) of the entire site showing:
- Design at ultimate build -out, .� _. ��
- Off -site drainage (if applicable), _ . -� rWE v Z s
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions, AUG 17 2009
- Pretreatment system,
- High flow bypass system, (f-� t ,9
Lr �l -NYA-90
-Maintenanceaccess,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
2. Partial plan (1' = 30' or larger) and details for the infiltration basin showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
- Flow distribution detail for inflow,
- Vegetated filter, and
- Pretreatment device.
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3. Section view of the infiltration basin IV = 20' or larger) showing:
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
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U. 0'
4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
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V_'KO-�-O
5. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
Investigation request form. County soil maps are not an acceptable source of soils information.
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6. A construction sequence that shows how the infitration basin will be protected from sediment until the
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entire drainage area is stabilized.
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7. The supporting calculations.
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8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Basin-Rev.4
Page 1 of 1 Part III. Required Items Checklist, Page 1 of 1
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Infiltration Basin Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be„r_.
corrected, repaired or replaced immediately. These deficiencies can affect the integrity"'"�-��'���P_
of structures, safety of the public, and the removal efficiency of the BMW.
AUG 17 2009
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to'thQ_' A jR0
infiltration basin. 17
— Immediately after the infiltration basin is established, the vegetation will be
watered twice weekly if needed until the plants become established (commonly
six weeks).
— No portion of the infiltration basin will be fertilized after the initial fertilization
that is required to establish the vegetation.
— The vegetation in and around the basin will be maintained at a height of
approximately six inches.
After the infiltration basin is established, it will be inspected once a quarter and within
24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal
County). Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present
Remove the trash/debris.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
infiltration basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
The inlet device: pipe or
The pipe is clogged (if
Unclog the pipe. Dispose of the
swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
Form SW401-Infiltration Basin O&M-Rev.3 Page 1 of 3
BMP element.
Potentialproblem:
How I will remediate theproblem:
The forebay
Sediment has accumulated
Search for the source of the
and reduced the depth to 75%
sediment and remedy the problem if
of the original design depth.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred or
Provide additional erosion
riprap is displaced.
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticides are used, wipe
them on the plants rather than
spraying.
The main treatment area
A visible layer of sediment
Search for the source of the
has accumulated.
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP. Replace any media that
was removed in the process.
Revegetate disturbed areas
immediately.
Water is standing more than
Replace the top few inches of filter
5 days after a storm event.
media and see if this corrects the
standing water problem. If so,
revegetate immediately. If not,
consult an appropriate professional
for a more extensive repair.
Weeds and noxious plants are
Remove the plants by hand or by
growing in the main
wiping them with pesticide (do not
treatment area.
spray).
The embankment
Shrubs or trees have started
Remove shrubs or trees
to grow on the embankment.
immediately.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Basin O&M-Rev.3 Page 2 of 3
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:
BMP drainage area number:
Print name: 1
Address: a", ";�� `c , a\..-., uy �-. a' t -� Sy
'-i -S '1—I' o cs
Date: Orb '\ �D_ om. v
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, 4V.e-'Q_ rA. G' rciJ allotary Public for the State of
6 r Th &,m I ��a_ , County o �e� do hereby certify that
personally appeared before me this
day of, and acknowledge the due execution of the
forgoing Ail basin maintenance requirements. Witness my hand and official seal,
PATRICIA M. GRAY
NOTARY PUBLIC
DARE COUNTY, NC
SEAL
My commission expires '7— 15e- //
Form SW401-Infiltration Basin O&M-Rev.3 Page 3 of 3
Volumetric Runoff Calculations
Simple Method
AUG 17 2009
It It 4
V r11 1 \/
Project Area Description - DRAINAGE AREA 1
Basin Information
existing
4,339
0
10,092
0
0
0
14,431
existing (to
remain)
0
0
673
0
0
0
673
proposed
(additional)
7,800
0
18,976
48
0
0
26,824
Receiving Stream Name
Broad Creek
Receiving Stream Class & Index Number
SA, HWQ
Drainage Area
40,808 SF
Existing Impervious Area
673 SF
Proposed Impervious Area
26,824 SF
% Impervious Area (total)
67.4%
Impervious Surface Area
On -site Buildings or Lot BUA
7,800 SF
On -site Streets
0 SF
On -site Parking
19,649 SF
On -site Sidewalks
48 SF
Other on -site
0 SF
Off -site
0 SF
Total:
27,497 SF
Runoff Calculations (Simple Method)
NCDENR
Design Runoff (in)
1.5
Total Area (Ac.)
40,806
Coverage
67.4%
R(v)
0.656
Rainfall Volume
3,348
NCDENR Design: 3,348
a
Peak Runoff Calculations
Project Name : Roanoke Island Volunteer Fire Department - Wanchese Station
Drainage Area = 0.94 (ac)
Postdevelopment Runoff Rate (excluding -storage devices)
Area
"C"
C*A
(ac)
Impervious Area
On -site Buildings or Lot BUA
0.18
1.00
0.18
On -site Streets
0.00
0.95
0.00
On -site Parking
0.45
0.95
0.43
On -site Sidewalks/Concrete
0.00
0.95
0.00
Other on -site
0.00
0.95
0.00
Pervious Area
Remaining
0.31
0.20
0.06
Total: 0.94
0.67
Design Event:
Weighted Runoff Coefficient:
Average Intensity:
Postdevelo ed Peak Discharge:
year
1
0.71
0.132
0.088
hour
24
(in/hr)
cfs - into BMP)
depth
3.17
Predevelopment Runoff Rate (excluding storage devices)
Area
..Cf.
C*A
(ac)
Impervious Area
On -site Buildings or Lot BUA
0.10
1.00
0.10
On -site Streets
0.00
0.95
0.00
On -site Parking
0.23
0.95
0.22
On -site Sidewalks/Concrete
0.00
0.95
0.00
Other on -site
0.00
0.95
0.00
Pervious Area
Remaining
0.61
0.20
0.12
Total:
0.94
0.44
Design Event :
year
hour
depth
1
24
3.17
Weighted Runoff Coefficient:
0.47
Average Intensity:
0.132
(in/hr)
Predeveloped Peak Discharge:
0.058
(cfs)
Postdeveloped Peak Discharge:
0.090
(cfs - see calculations from BMP)
Z/L\
STORMWATER MANAGEMENT CALCULATIONS - INFILTRATION BASIN DESIGN
"Project
Drainage Area
Infiltration Basin
Infiltration Basin Information
Roanoke Island Volunteer Fire Department - By: mjm
1 Date : 08/06/09
elevation
area
(msl)
(sf)
Storage Elevation:
9.0
4,000
Bottom of basin:
8.0
2,900
ESHWT Elev.:
6.0
(msl)
Permeability:
0.6
(in/hr)
Available Storage Volume:
3,450
(cf)
Required NCDENR Volume:
3,348
(cf)
NCDENR Drawdown Calculations
Average Hydraulic Gradient:
1.3
(ft/ft)
Drawdown Rate:
0.060
(cfs)
NCDENR Drawdown Time:
0.67
Days
Prepared by Albemarle and Associates, Ltd.
3/ k
Volumetric Runoff Calculations
Simple Method
Project Name: Roanoke Island Volunteer Fire Department - Wanchese Station
1'
Channel Report
Hydraflow Express by Intelisolve
Thursday, Aug 6 2009, 9:39 AM
RIVFD - Wanchese Station - Vegetated Filter (Max Weir Flow)
Trapezoidal
Highlighted
Botom Width (ft)
= 4.00
Depth (ft)
= 1.07
Side Slope (z:1)
= 3.00
Q (cfs)
= 2.120
Total Depth (ft)
= 1.50
Area (sqft)
= 7.71
Invert Elev (ft)
= 7.30
Velocity (fUs)
= 0.27
Slope (%)
= 0.67
Wetted Perim (ft)
= 10.77
N-Value
= 0.350
Crit Depth, Yc (ft)
= 0.20
Top Width (ft)
= 10.42
Calculations
EGL (ft)
= 1.07
Compute by:
Known Q
Known Q (cfs)
= 2.12
Elev (ft)
9.00
8.50
M
7.50
Valle
6.50
0
Section
2 4 6 8 10
Reach (ft)
12 14 16
Depth (ft)
1.70
1.20
0.70
0.20
-0.30
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