HomeMy WebLinkAboutSW7071002_CURRENT PERMIT_20080118STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW -&/%Do�
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE-
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Michael F Easley. Govemor
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William G. Ross Jr, Secretary
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Carolina Department of Environment and Natural Resources
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Coleen H Sullins, Director
Division of Water Quality
January 18, 2008
Town of Kill Devil Hills
Attn.: Mr. Shawn Murphy
P.O BOX 1719
Kill Devil Hills, NC 27948
Subject: Stormwater Review SW7071002
Kill Devil Hills Public Works, Western Parcel
High Density Stormwater Project
Dare County
Dear Mr. Murphy:
The Washington Regional Office received a completed Stormwater Application for the subject project on
October 1, 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. SW7071002
dated January 18, 2008 to Town of Kill Devil Hills for the construction and operation of an infiltration basin to serve the
Kill Devil Hills Public Works, Western Parcel located at Western end of Veterans Drive, KIII Devil Hills, NC.
12/3 1/1!
This permit shall be effective from the date of issuance until January 18, 2018, 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, 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 Ernest Odei-
Larbi or me at (252) 946-6481.
Si cerely,
Al Hodge, Rglonal Supervisor l
Surface Water Protection Section
Washington Regional Office
AH/sd J:\WPDATA\WQS\Ernest- State SW\Permits -Infiltration
cc: John Delucia, P.E., Albemarle & Associates, Ltd. (115 West St. Clair Street, P.O BOX 3989,
Kill Devil Hills, NC 27948)
Dare County Planning/Inspections Department
/Vashington Regional Office
Central Files
North Carolina Division of Water Quality Internetwww ncwaterguahty ore One 1,
943 Washington Square Mall Phone (252) 946-6481 NOl UtCarOlIIla
Washington, NC 27889 Fax (252)946-9215 Naturally
An Equal Opportunity/Affrmaave Action Employer- 50%Recycled/10°/ Post Consumer Paper Kvl[ !-L �/
State Stormwater Management Systems
Permit No. SW7071002
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
Town of Kill Devil Hills
Dare 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 an infiltration basin to serve the Kill Devil Hills Public Works,
Western Parcel located at Western end of Veterans Drive, Kill Devil Hills, NC
This permit shall be effective from the date of issuance until January 18, 2018 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 in page 3 of
this permit, the Project Data Sheet.
3. Approved plans and specifications for this project are incorporated by reference and enforceable parts of the
permit.
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.
8. 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.
State Stormwater Management Systems
Permit No. SW7071002
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Receiving Stream:
Classification of Water Body:
a. Site Area, acres:
b.
C.
d.
e.
f.
9
h.
Drainage Area to Basin, ftZ:
Total Impervious Surfaces, ftZ:
Design Storm, inches:
Basins Depth, feet:
Bottom Elevation, FMSL:
Bottom Surface Area, ftZ:
DIVISION OF WATER QUALITY
PROJECT DATA
Kill Devil Hills Public Works, Western Parcel
SW7071002
Dare County
Town of Kill Devil Hills
P.O. BOX 1719, Kill Devil Hills, NC 27948
Buzzard Bay
SC
Permitted Storage Volume, ft3:
Type of Soil:
Expected Infiltration Rate, in/hr:
Seasonal High Water Table, FMSL
3.47
DA #1
DA #2
144,740
87,739
71,143
37,757
1
1
1.20
1.20
7.50
7.50
27,222
4,524
35,728
6,544
Corolla-Duckston;
Newhan-Corolla Complex
15
15
5.50
5.50
It. 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.
7
State Stormwater Management Systems
Permit No. SW7071002
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:
a. Semiannual 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.
g. A clear access path to the bypass structure must be available at all times.
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. Any deviations from the approved plans and specifications must be noted on the
Certification. A modification may be required for those deviations. 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 the life of the
project.
8. Access to the stormwater facilities shall be maintained via appropriate easements at all times.
9. The permittee shall submit to the Director and shall have received approval for revised plans,
specifications, and calculations prior to construction, for any modification to the approved plans, including,
but not limited to, those listed below:
a Any revision to any item shown on the approved plans, including the stormwater management
measures, built -upon area, details, etc.
b. Project name change
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area. The project area is
defined as all property owned by the permittee, for which 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.
10. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director 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.
4
State Stormwater Management Systems
Permit No. SW7071002
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 The stormwater systems shall not be used as Erosion Control devices. They must be kept off line and
free from sediment until the project is complete and the entire site has been stabilized
13. This permit shall be effective from the date of issuance until January 18, 2018. Application for permit
renewal shall be submitted 180 days prior to the expiration date of this permit and must be
accompanied by the processing fee.
III. GENERAL CONDITIONS
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. 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-
215.6(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.
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 permitee 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. The permittee shall notify the Division of any name, ownership or mailing address changes within 30
days.
Permit issued this the 18th day of January 2008.
ENVIRONMENTAL MANAGEMENT COMMISSION
,�,Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
State Stormwater Management Systems
Permit No. SW7071002
IGII Devil Hills Public Works, Western Parcel
Designer's Certification
as a duly
registered Professional Engineer 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.
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/bypass 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.
it. 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.
LI
Y DWQ USE ONLY
Date Received
Fee Paid
Permit Number
11
JAN17
2008
505
1 SW-70-11002
DWQ_WARO State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This fornz may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Town of Kill Devil Hills
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Mr. Shawn MurRhy, Assistant Town Manager
3. Mailing Address for person listed in item 2 above:
City:Kill Devil Hills State:NC Zip:27948
Phone: (252 ) 449-5300 Fax: (252 ) 441-7946
Email:shawn@kdhnc.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Kill Devil Hills Public Works, Western Parcel
5. Location of Project (street address):
Western end of Veterans Drive
City:Kill Devil Hills County:Dare
6. Directions to project (from nearest major intersection):
Turn west at intersection of US 158 and SR 1217 (Colington Road), proceed west 0.3 miles to 6th Ave., turn
left on 6th Ave and go 0.23 miles to Veterans Drive. Turn right and go 0.6 miles to end of Veterans Drive
7. Latitude:36° 3' N Longitude:75° 40.4' W of project
8. Contact person who can answer questions about the project
Name:lohn DeLucia, PE Telephone Number: (252 ) 441-2113
Email:johnd@albal.us
II. PERMIT INFORMATION:
1. Specify whether project is (check one):
OR
❑Renewal ❑Modification
Form SWU-101 Version 8.07 Page 1 of 4
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 []GeneralPermit ❑Universal SMP ❑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 stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
Stormwater generated from this site will be conveyed via sheetfiow to 2-18" deep dry infiltration basins. The
»Lajority of the site improvements sheet drains to a 32,326 SF dry basin located in the southern portion of the site.
The remaining gravel and concrete drain toward a basin located to the north.
2. Stoimwater runoff from this project drains to the Pasquotank River basin.
3. Total Site Area: 47.44 acres 4. Total Wetlands Area: 29.25 acres
5. 1W Wide Strip of Wetland Area: n/a acres (not applicable if no wetlands exist on site)
6. Total Project Area":5.06 acres 7. Project Built Upon Area:8.55 %
8. How many drainage areas does the project have?2
9. 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.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Buzzard Bay
Buzzard Bay
Stream Class & Index No.
SC
SC
Drainage Area (sf)
144,740
87,739
Existing Impervious" Area (sf)
0
0
Proposed Impervious'Area (sf)
1 71,143
37,757
% Impervious' Area (total)
49.2%
43.0%
Impervious' Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
0
0
On -site Streets (sf)
1,203
27,697
On -site Parking (sf)
0
0
On -site Sidewalks (sf)
0
0
Other on -site (sf)
69,940
10,060
Off -site (sf)
0
0
Total (sf):
71,143
37,757
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
"Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon area
percentage calculation.
Form SWU-101 Version 8.07 Page 2 of
10. How was the off -site impervious area listed above derived?From calculations based upon what is proposed.
W. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following 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
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, 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 (919) 733-5083 for the status
and availability of these forms.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Form SWU-101 Version 8.07 Page 3 of 4
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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 Office. (Appropriate office may be found by locating project on the
interactive online map at httt)://h2o.enr.state.nc.us/su/msi maps.htm)
1. Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form N JA
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BN
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/manageme
• Copy of any applicable soil report
• Three copies of plans and specifications (sealed, signed & dated), 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):Albemarle & Associates, John DeLucia, PE
Mailing Address:PO Box 3989
City:Kill Devil Hills State:NC Zip:27948
Phone: (252 1 441-2113 Fax: (252 ) 441-0965
Email:johnd@albal.us
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Shmon Murphy
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.
Signature: Date: �✓ v v
M2
Fonn SWU-101 Version 8.07 Page 4 of
Permit Number: .5 W 7 0 710 ba,
(to be provided by DWQ)
Drainage Area Number:I..� ��aD�®
Infiltration Basin Inspection and Maintenance Agreement ((jj����� NNYY
JAN 17 2008
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 wiQ-'VAR®
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to the
infiltration basin.
— 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 inspection 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 I&M-Rev.2 Page 1 of 3
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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 stone event
media and see if this corrects the
standing water problem. If so,
rvegetate 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 SW40 I -Infiltration Basin I&M-Rev.2 Page 2 of 3
Permit
(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:Kill Devil Hills Public Works Western Parcel
BMP drainage area number:
Print name: Shawn Murphy
Title: Assistant Town Manager
Address: PO Box 1719, Kill Devil Hills, NC 27948
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, FAME LA A . Ron CK , a Notary Public for the State of
iJC)KM CAROLI JA , County of T�aRE do hereby certify that
6w,w�1 R MuRP"i personally appeared before me this I5n,
day of lJnauAR.l Zo06 , and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
AJ('_ Q. RA' aa«x
SEAL
My commission expires MAC t z, 7ao9
Form SW401-Infiltration Basin I&M-Rev.2 Page 3 of 3
7
0
Permit Number: S W7071 00 Z.
(to be provided by DWQ)
Drainage Area Number: &
Infiltration Basin Inspection and Maintenance Agreement REGEAVED
I will keep a maintenance record on this BMP. This maintenance record will be kept in a JAN 17 2008
log in a known set location. Any deficient BMP elements noted in the inspection will b¢11A1Q_ypl/t/1R®
corrected, repaired or replaced immediately. These deficiencies can affect the integrity tli!
of structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to the
infiltration basin.
— 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 inspection 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
infiltration basin
Areas of bare soil and/or
erosive gullies have formed.
Regrade the soil if necessary to
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
Swale
The pipe is clogged (if
applicable).
Unclog the pipe. Dispose of the
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 roblems with erosion.
Form SW401-Infiltration Basin 1&M-Rev.2 Page 1 of 3
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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 re air.
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.
Fonn SW401-infiltration Basin I&M-Rev.2 Page 2 of 3
Permit
(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:Kill Devil Hills Public Works Western Parcel
BMP drainage area number:
Print name: Shawn Murphy
Title: Assistant Town Manager
Address: PO Box 1719 Kill Devil Hills NC 27948
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, PAMEtq A. R,00,crc a Notary Public for the State of
f.{(3RTH CARC) ,WA , County of DARE , do hereby certify that
SAW 4 R . ML RPH. personally appeared before me this 15'�
day of UnHana,I 2co8 and acknowledge the due execution of the
forgoing infiltration basin maintenance requirements. Witness my hand and official seal,
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SEAL
My commission expires MA,. i Z z009
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Form SW40 I -Infiltration Basin I&M-Rev.2 Page 3 of 3