HomeMy WebLinkAboutSW8021225_CURRENT PERMIT_20030523STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW �mla%s
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
O�0F WArFR�G Michael F. Easley, Governor
y William G. Ross Jr., Secretary
r North Carolina Department of Environment and Natural Resources
q
Alan W. Klimek, P.E.,Director
Division of Water Quality
May 23, 2003
Mr. Jeffrey L. Zimmer, Administrator
Zimmer Commercial Properties, LLC
111 Princess Street
Wilmington, NC 28401
Subject: Permit No. SW8 021225
Family Dollar Store--- Shipyard Blvd.
High Density Stormwater Project
New Hanover County
Dear Mr. Zimmer:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Family Dollar Store - Shipyard Blvd. on March 26, 2003. Staff review of
the plans and specifications has determined that the protect, as proposed, will comply
with the Stormwater Regulations set forth in Title 15A NCAC 2H.1000. We are
forwarding Permit No. SW8 021225 dated May 23, 2003, for the construction of Family
Dollar Store - Shipyard Blvd..
This permit shall be effective from the date of issuance until May 23, 2013, and shall be
subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance requirements in this permit. Failure to
establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed
with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-
7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Linda Lewis, or me at (910) 395-3900.
Sincerely,
h c 1! -)
Rick Shiver
Water Quality Regional Supervisor
RSSlarl: S:1WQSISTORMWATIPERMIT1021225.may03
cc: Phil Tripp, P.E.
Tony Roberts, New Hanover County Building Inspections
Beth E. Wetherill, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
N. C. Division of Water Quality 127 Cardinal Drive Extension (910) 395-3900 Customer Service AN"a
Wilmington Regional Office Wilmington, NC 28405 (910) 350-2004 Fax 1 800 623-7748 �tCUEF5
State Stormwater Management Systems
Permit No. SW8 021225
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
Jeffrey L. Zimmer, Zimmer Commercial Properties, LLC
Family Dollar Store - Shipyard Blvd.
New Hanover County
FOR THE
construction, operation and maintenance of an infiltration basin 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 May 23, 2013, 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 46,719 square
feet of impervious area. This pond provides twice the minimum design storm
storage, therefore a vegetated filter is not required.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans.
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. A permit
modification must be submitted and approved prior to the construction of
additional built -upon area from outside of the approved drainage area.
2
State Stormwater Management Systems
Permit No. SW8 021225
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: Family Dollar Store - Shipyard Blvd.
Permit Number: SW8 021225
Location: 700 Shipyard Blvd., Wilmington
New Hanover County
Applicant: Mr. Jeffrey L. Zimmer, Administrator
Mailing Address: Zimmer Commercial Properties, LLC
111 Princess Street,
Wilmington, NC 28401
Application Date:
March 26, 2003
Receiving Stream/River Basin:
Cape Fear River 1 Cape Fear
Stream Index Number:
CPF17 18-(71)
Classification of Water Body:
"SC"
Drainage Area, acres:
1.75
Onsite, sq. ft.:
1.75
Offsite, sq. ft.:
0
Total Impervious Surfaces, sq. ft.:
46,719.
Basin Depth, feet:
2.0
Bottom Elevation, FMSL:
45.0
Permitted Surface Area, sq. ft.:
3,840@ Bottom
Permitted Storage Volume, cubic ft.:
9,714
Temporary Storage Elevation, FMSL:
47.0
Type of Soil:
Sand
Expected Infiltration Rate, inlhr:
18.4
Seasonal High Water Table:
36.0
Time to draw down, hours:
1.3
3
State Stormwater Management Systems
Permit No. SW8 021225
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in it's 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, catch basins and
piping.
g. Access to the outlet 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.
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. Use of infiltration systems as Erosion
Control devices is not advised.
4
State Stormwater Management Systems
Permit No. SW8 021225
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, 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 permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction. If the proposed
BUA exceeds the amount permitted under this permit, a modification to the
permit must be submitted and approved prior to construction.
11. 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.
12. At least 30 days prior to the sale or lease of any portion of the property, the
permittee shall notify DWQ and provide the name, mailing address and phone
number of the purchaser or leasee. An access/maintenance easement to the
stormwater facilities shall be granted in favor of the permittee if access to the
stormwater facilities will be restricted by the sale or lease of any portion of the
property.
13. The permittee must maintain compliance with the proposed built -upon area and
ensure that the runoff from all the built -upon is directed into the permitted system.
14. 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.
15. The permittee must maintain the current permitted drainage area. No additional
runoff from outside of the permitted drainage area boundary may enter the
permitted stormwater facilities without first applying for and receiving a permit
mod ification.
5
State 5tormwater Management Systems
Permit No. SW8 021225
Ili. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of owership, 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 Director 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) 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 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.
3. 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 23rd day of May, 2003.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
=-7 Division of Water Quality
By Authority of the Environmental Management Commission
I
State Stormwater Management Systems
Permit No. SW8 021225
Family Dollar Store - Shipyard Blvd.
Stormwater Permit No. SW8 021225
New Hanover County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been, authorized to observe
(period icaIIylweeklylfuII time) the construction of the project,
roject
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
7
State Stormwater Management Systems
Permit No. SW8 021225
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. Ali the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
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.
8. Vegetated slopes are no steeper than 3:1.
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.
12. All required design depths are provided.
13. All required pacts of the system are provided, such as a vegetated shelf,
and a forebay.
14. The overall dimensions of the system, as shown on the approved plans,
are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspections
rI
L�l ..,.... '1 .....
Date Received
Fee Paid
Permit Number
b - 30 1 D a
Le'i v . ' /
122$
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be pholocopied for use as an original
1. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc, who owns the project):
Zimmer Commercial Properties, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Jeffrey L• Zimmer LLC Administrator
3. Mailing Address for person listed in item 2 above:
I I I Princess Street
City: Wilmin Eton State: NC Zip: 28401
Telephone Number: 910-342-9144
4, Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Family Dollar
5. Location of Project (street address):
intersection of Carolina Beach Road and Shipyard Blvd.
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From the intersection of US Hwy 421 and NC Hwy 132, drive approximately 2.03 miles. Turn right onto
Shipyard Blvd. Site is approximately 975 if on right,
7. Latitude : N 340 11' 00" Longitude: W 770 56' 00" of project
8. Contact person who can answer questions about the project:
Name: CLaj, 5 C�2tl;�-- _ Telephone Number: 910-763-5100
IL PERMIT INFORMATION:
1. Specify whether project is (check one)
X New
Renewal Modification
Form SWU-101 Version 3.99 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 X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404I1401 Permit NPDES Stormwater
Information on required state pen -nits 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.
infiltration basin
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area: 1.75 acres 4. Project Built Upon Area: 61.14_
5. How many drainage basins does the project have'? I
6, Complete the following infon-nation 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.
.........................*i��:!...Y.if�i*:.::r:.:O:C•�:i.}::: y:i.y:.:..:..::....
'::ir:•::r
.: ............. .. .. n.... :.... .. n. :.4. :. .. r. .�...r ... n... :r r..
..:..:..:..............:........`�.�.ay..�yy�.......:.... .�. :. :..::..ti:.: ....:.::...
.. .r... :.... n .�. .. :. r. :.r.r r..
r:.:
Receiving Stream Name
Cape Fear River
Receiving Stream Class
C-SW
Drainage Basin Area
1.75 ac
Existing Impervious * Area
Proposed impervious * Area
1.40 ac
%, Impervious* Area (total)
61.14
. : ..
On -site Buildings
7,812 sf
On -site Streets
19,296 sf
On -site Parking
16,965 sf _.
On -site Sidewalks
2,646 sf
Other on -site
0 ff-s ite
Total:
E=46,719 sf
E_
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4
7. How was the off -site impervious area listed above derived'?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The fallowing covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality These covenants miry
not be changed or deleted without the consent of the State.
2. No more than square feet ofany lot shall be covered by structures of impervious materials.
Impervious materials include asphalt, gravel, concrete, brief stone, slate or similar material but do not include wood
decking or the water surface of s wimming pools.
3. Swales shall not be filled in, piped or altered except as necessary to provide driveway crossings.
1. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior
to construction.
S. All permitted runrfffrom outparcels orfuture development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of thesystem as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and
persons claiming under them, that they will nin 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 (910) 733-5083 for
the status and availability of these forms.
form SWU-102
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
. Please indicate that you have provided the following required information by initialing in the space
provided next to each item.
Applicant's Initials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
C!:;t
• Permit application processing fee of $420 (payable to NCDENR)
CrZ
• Detailed narrative description of stormwater treatment/management
�L
• Two copies of plans and specifications, including:
C
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and date
- Mean high water line
- Dimensioned propertylproject 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 stornnvater 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)
Vll. 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): Tri En ineerin P.C.
Mailing Address: 419 Chestnut Street
City. Wilmington _ State: NC Zip: 28401
Phone: 9I0 763-5100 Fax: 910 763-5631
Vlll. APPLICANT'S CERTIFICATION
1, (hrint or type name of person listed in General Information, item 2) Jeffrey L. Zimmer
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project wil be constructed in conformance with the approved plans, that the required deed restrictions
and protective cov anps will Ae recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000 l
Signature:
Date: /21-111rd�
Dorm SWU-101 Version 3.99 Page 4 of 4
Permit No. G(�8' d� 1�2 _
(to be provided by DWO
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
INFILTRATION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, an
infiltration basin supplement for each system, design calculations, soils report and plans and specifications
showing all stormwater conveyances and system details.
I. PROJECT INFORMATION
i
Project Name: Family Dollar
Contact Person: -Phillip--G. Tripp Phone Number: ( 910 ) 763-5100
This worksheet applies to : Basin No.
(as identified on plans)
in Drainage Area 1
(from Form SWU--101)
ll. DESIGN INFORMATION -- Attach supporting calculations/documentation. The soils report must be
based upon an actual field investigation and soil borings. County soil maps are not an acceptable
source of soils information. All elevations shall be in feet mean sea level (fmsl).
Soils Report Summary
Soil Type
Infiltration Rate
SHWT Elevation
Basin Design Parameters
Design Storm
Design Volume
Drawdown Time
Basin Dimensions
Basin Size
Basin Volume Provided
Basin Elevations
Bottom Elevation
Storage Elevation
Top Elevation
Form S WU-103 Rev 3.99
Yellow Sand
18.4 in/hr r cf/hr/sf (circle appropriate units)
36.0 fmsl (Seasonal High Water Table elevation)
ME
inch (I.5 inch event for SA waters, I inch event for others)
9,016 c.f.
1.33 da-ys hrs
32.27 ft. x 119 ft. = 3,840 sq. ft. (bottom dimensions)
9,714 c.f.
45.0 fmsl
47.0 fmsl
48.0 fmsl
Page] of 3
1
Ill. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural 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 Stormwater Management Permit
Application Form, the agent may initial below. Attach justification if a requirement has not been met.
Applicants Initials
_ a. System is located 50 feet from class SA waters and 30 feet from other surface waters.
C-0G
b. System is located at least 100 feet from water supply wells.
CCZ c. Bottom of system is at least 2 feet above the seasonal high water table.
U d. Bottom of system is 3 feet above any bedrock or impervious soil horizon.
e. System is not sited on or in fill material or DWQ approval has been obtained
C f. System is located in a recorded drainage easement for the purposes of operation and
maintenance and has recorded access easements to the nearest public right-of-way.
G,( g. Drainage area for the device is less than 5 acres.
h.. Soils have a minimum hydraulic conductivity of 0.52 inches per hour and soils report is
attached.
i.. System captures and infiltrates the runoff from the first 1.0 inch of rainfall (1.5 inch event
T� for areas draining to SA waters). Design volume and. infiltration calculations attached.
j. System is sized to take into account the runoff at the ultimate built -out potential from all
surfaces draining to the system, including any off -site drainage. Calculations attached.
k. All side slopes stabilized with vegetated cover are no steeper than 3:1(H-V).2:1 & sodded
C� 1. A pretreatment device such as a catch basin, grease trap, filter strip, grassed swale or
sediment trap is provided.
C/ m. Bottom of the device is covered with a layer of clean sand to an average depth of 4 inches
or dense vegetative cover is provided.
n. Vegetated filter is provided for overflow and detail is shown on plans (Required minimum
length is 50 feet for SA waters, 30 feet for other waters).
o. Flow distribution mechanism within basin is provided.
<J�_l p. A benchmark is provided to determine the sediment accumulation in the pretreatment
device.
C?C. q. Runoff in excess of design volume bypasses off-line systems (bypass detail provided).
�L r . System is designed to draw down the design storage volume to the proposed bottom
elevation under seasonal high water conditions within five days. A soils report and all
pertinent draw -down calculations are attached.
s. Plans ensure that the installed system sill meet design specifications (constructed or
restored) upon initial operation once the project is complete and the entire drainage area
is stabilized.
Forin S WU-103 Rev 3.99 Page 2 of 3
IV. INFILTRATION BASIN OPERATION AND MAINTENANCE AGREEMENT
1. After every runoff producing rainfall event and at least monthly, inspect the infiltration system for erosion,
trash accumulation, grass cover, and general condition.
2. Repair eroded areas immediately, re -seed as necessary to maintain adequate vegetative cover, mow
vegetative cover to maintain a maximum height of six inches, and remove trash as needed.
3. After every runoff producing rainfall event and at least monthly inspect the bypass, inflow and overflow
structures for blockage and deterioration. Remove any blockage and repair the structure to approved
design specifications.
Remove accumulated sediment from the pretreatment system and infiltration basin annually or when
depth in the pretreatment unit is reduced to 75% of the original design depth. The system shall be restored
to the original design depth without over -excavating. Over excavating may cause the required water
table separation to be reduced and may compromise the ability of the system to perform as designed.
Removed sediment shall be disposed of in an appropriate manner and shall not be handled in a manner
That will adversely impact water quality (i.e. stockpiling near a stormwater treatment device or stream,
etc.).
A benchmark shall be established in the pretreatment unit. The benchmark will document the original
design depth so that accurate sediment accumulation readings can be taken. The measuring device used
to determine the depth at the benchmark shall be such that it will give an accurate depth reading and not
readily penetrate into accumulated sediments.
When the design depth reads 0.75 feet in the pretreatment unit, the sediment shall be
removed from both the pretreatment unit and the infiltration basin.
5. if the Division determines that the system is failing, the system will immediately be repaired to original
design specifications. If the system cannot be repaired to perform its design function, other stormwater
control devices as allowed by NCAC 2H .1000 must be designed, approved and constructed.
i acknowledge and agree by my signature below that I am responsible for the performance of the five
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: _____Jeffery L. Zimmer, LLC Administrator _ _ _
Address: 111 Princess Street, Wilmington, NC 28401
Phone: (910) 763-4669 Date: December 18, 2002
Signature:
!Vote: The legally responsible Marty should not be c's,h rneowners association unless more than 5090 of the lots have been sold and
a resident of the subdivision has been named Me president.
1, KIM. N. -SLAYS , a Notary Public for the State of _North Carolina County of
NEW_. HANOVER do hereby certify that Jeffery L. Zimmer personally appeared before me. this
18 day of December �2002 and acknowledge the du execution of the forgoing infiltration basin maintenance
requirements. #i!VY?Nt Qand and official seal,
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SISAL 2p oC3 a My commission expires APz�l 1.9., 2005_
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