HomeMy WebLinkAboutSW7080107_CURRENT PERMIT_20080610STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
DOC TYPE
CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE,�j�(p�
YYYYMMDD
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Y
June 10, 2008
Lake New Bern Development, LLC
Attn: Mr. Steve Tyson
820 Broad Street
New Bern, NC 28560
Rb
Michael F. Easley, Gomor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins Director
Division of Water Quality
Subject: Permit No. SW7080107
Lake New Bern PUD
High Density Stormwater Project
Craven County
Dear Mr. Tyson:
The Washington Regional Office received a complete Stormwater Management Permit Application
for the subject project, located off Simmons Street in New Bern, NC on April 16, 2008. Staff review
of the plans and specifications has determined that the proJ'ect, as proposed, will comply with the
Stormwater Regulations set forth in Title 15A NCAC 2H.MO. We are forwarding Permit No.
SW7080107 dated June 10, 2008, for the construction of the subject project.
This permit shall be effective from the date of issuance until June 10, 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 and in the submitted application. Failure
to establish an adequate system for operation and maintenance of the stormwater management
system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following
receipt of this permit. This request must be in the form of a written petition, conforming to
Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact
either Bill Moore, or me at (252) 946-6481.
4A.HodgeI
ncer ly,
)�6 �_—_—.__--
Regional Supervisor
Surface Water Protection Section
cc: Avolis Engineering
New Bern Building Inspections
,,-Washington Regional Office
Central Files
North Carolina Division of Water Quality Internet: h2o.encstate.nc,us
943 Washington Square Mall Phone: 252-946-6481 One
Washington, NC 27889 FAX 252-946-9215 NorthCarojjna
An Equal Opportunity/Affirmative Action Employer— 50%Recycled110% Post Consumer Paper Naturally
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
Lake New Bern Development Company, LLC
Lake New Bern PUD
Craven County
FOR THE
construction, operation and maintenance of (2) wet detention basins in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "storm water rules') and the
approved stormwater management plans and specifications and other supporting data as
attached and on file with and approved by the Division of Water Quality and considered a part
of this permit.
This permit shall be effective from the date of issuance until June 10, 2018, 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 1.6 on page 3 of this permit. The stormwater controls have been
designed to handle the runoff from 11.42 acres of impervious area.
3. 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 and permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this
permit, and per approved plans.
The runoff from all built -upon area within the permitted drainage areas of this project
must be directed into the permitted stormwater control system.
Page 2 of 7
A
The following design criteria have been provided in the wet detention basins and must be
maintained at design condition:
a.
Drainage Areas:
90.28 ac - Total Site
15.63ac-DA1
15.21 ac-DA2
b.
Total Impervious Surfaces:
5.24 ac - DA 1
6.18ac-DA2
C.
Design Storm:
1.0 - inch
d.
Pond Depths:
7.0 - ft
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevations, FMSL:
2.0 - ft
g.
Permanent Pool Surface Areas:
8,224 sf - DA 1
Required
9,471 sf - DA 2
h.
Permanent Pool Surface Areas:
20,253 sf - DA 1
Provided
17,277 sf - DA 2
i.
Storage Volumes Required:
29,621 cf - DA 1
31,020 cf - DA 2
k.
Temporary Storage Volumes:
29,621 cf - DA 1
Provided
31,020 cf - DA 2
I.
Small Diameter Controlling Orifice:
2.50 - inch pipes
M.
Receiving Stream/River Basin:
Rennys Creek
n.
Classification of Water Body:
SC - Sw - NSW
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety, vegetated and .
operational for its intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to
assure the permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance Plans 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, filter media, flow spreader,
catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
Page 3 of 7
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.
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.
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.
7. 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.
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 permittee shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by the
Permittee at all times.
12. 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.
13. This permit shall be effective from the date of issuance until June 10, 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.
Page 4 of 7
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director. In the
event of a change of ownership, or a name change, the permittee must submit a formal
permit transfer request to the Division of Water Quality, accompanied by a completed
name/ownership change form, documentation from the parties involved, and other
supporting materials as may be appropriate. The approval of this request will be
considered on its merits and may or may not be approved. The permittee is responsible
for compliance with all permit conditions until such time as the Division approves the
transfer request.
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 Penmittee from complying with any and
all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
Approved plans and specifications for this project are incorporated by reference and are
enforceable parts of the permit. A copy of the approved plans and specifications shall be
maintained on file by the Permittee for the life of the project.
The permittee shall notify the Division of any name, ownership or mailing address
changes within 30 days.
Permit issued this the 10 th day of June, 2008.
CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
for
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW7080107
Page 5 of 7
Stormwater Permit No. SV 7080107
Lake New Bern PUD, New Bern, NC
(2) Wet Pond Systems
Craven 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.
Note: The checklist on the following page must be included with this Certification. Any changes
or deviations from the approved plans and specifications must be explained in detail, and may
require a permit modification. The certification forms should be submitted to the Division of
Water Quality at the appropriate Regional office.
Signature
Registration Number
Date
SEAL
Page 6 of 7
Complete this checklist for each system and include with Certification:
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 sucha e runoff
drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A Trash Rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-circuiting of
the system.
11. The permitted amounts of surface area and/or volume have been provided.
12. 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.
Page 7 of 7
If tm. 1rr DWQ USE ONLY
Date Received
Fee Paid
Permit Number
2008
DUVQUIl" State of North Carolina SWACK
epartment of Environment and Natural Resources
I Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
0' This form may be photocopied for use as an original
I. GENERAL INFORMATION
'I. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Lake New Bern Development Company, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Steve Tyson, Member/Manager
3. Mailing Address for person listed in item 2 above:
City:New Bern State:NC Zip:28560
Phone: (252 514-9157 Fax: (
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Lake New Bern - A Planned Unit Development
5. Location of Project (street address):
City:
6. Directions to project (from nearest major intersection):
County:Craven
South Glenburnie Road to Neuse Boulevard. Turn right onto Neuse Boulevard. Turn left onto Simmons
Street. Project is approximately 1.2 miles on left.
7. LatitUde:N 35 7.5' Longitude:W 77 4.2' of project
8. Contact person who can answer questions about the project:
Name:Steve Tyson Telephone Number: (252 ) 514-9157
Email:
H. PERMIT INFORMATION:
1. Specify whether project is (check one):
Form SWU-101 Version 8.07
®New
Page I of 4
❑Renewal OModification
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 ®Fligh Density ❑Redevelop ❑General Permit ❑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.
Ill. 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 .
2. Stormwater runoff from this project drains to the Neuse River basin.
3. Total Site Area: 90.275 acres 4. Total Wetlands Area: 56.0 acres
5. 100' Wide Strip of Wetland Area: 3 acres (not applicable if no wetlands exist on site)
6. Total Project Area**:90.275 acres 7. Project Built Upon Area:13.0 %
8. How many drainage areas does the project have?3
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
IZenny's Creek
Renny's Creek
Stream Class & Index No.
SC, Sw, NSW
SC, Sw, NSW
Drainage Area (so
680,784 SF, 15.63 AC
662,339 SF, 15.21 AC
Existing Impervious* Area (so
0
0
Proposed Impervious*Area (so
228,409 SF, 5.24 AC
269,083 SF, 6.18 AC
`% Impervious* Area (total)
33.55%
40.63%
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
142,254 SF
182,898 SF
On -site Streets (so
65,250 SF
65,050 SF
On -site Parking (so
---
---
On-site Sidewalks (so
9,640 SF
9,160 SF
Other on -site (so
11,265 SF
11,975 SF
Off -site (so
Total (so:
228,409 SF, 5.24 SF
269,083 Sf, 6.18 AC
* Impervious area is defined as the built upon area including, but not limited to, buildings, rands, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 8.07 Page 2 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 General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major _Sedimentation/Erosion Control 404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project .
2. Stormwater runoff from this project drains to the
3. Total Project
5. How many drainage areas does the project have?
River basin.
4. Project Built Upon Area: %
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Area 3
Drainage Area 2
Receiving Stream Name
Renny' s Creek
Receiving Stream Class
SC, Sw, NSW
Drainage Area
2,5B9256 SF 5 AC
Existing Impervious* Area
0
Proposed Impervious"Area
14,000 SF 0.32 AC
% Impervious* Area (total)
0.5
Impervious" Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings
0
On -site Streets
14, 000 SF
On -site Parking
_
On -site Sidewalks
Other on -site
_
Off -site
Total: 14,000 SF, 0.32 AC
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4
**Total project area shall be calculated based on the current policy regarding inclusion of wetlands in the built upon m"ea
percentage calculation.
10. 1-low was the off -site impervious area listed above derived
IV. 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 Oulparcels
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 SW40I-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW40"I-Level Spreader
Form SW40"I-Welland
Norm SW401 -G rassed Swale
Form SW401-Sand Filler
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 Welland Supplement
Grassed Swale Supplement
Sand Filler Supplement
Form SWU-101 Version 8.07 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 Office. (Appropriate office may be found by locating project on the
interactive online map at http://h2o.enr.state.nc.us/su/msi maps.hun
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Original and one copy of the Deed Restrictions & Protective Covenants Form
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 ($4,000 for Express) payable to NCDENR
• Calculations & detailed narrative description of Stormwater treatment/management
• 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): Avolis Engineering P.A.
Mailing Address: P.O. Box 15564
Phone: (252 ) 633-0068
Email:avoliseng@lpmonline.net
VIII. APPLICANT'S CERTIFICATION
State:NC Zip:28561
Fax: (252 ) 633-6507
1, (print or type, name of person listed in General Information, item 2) Steve Tyson
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 21-1 .1000. , _
Signa
Date:
FormSWU-101 Version8.07 Page 4of4
STORMWATER NARRATIVE
Lake New Bern - A Planned Unit Development
Simmons Street
New Bern, North Carolina
The Lake New Bern Subdivision project consists of the development of a 96 lot single-family
residential subdivision on 90.275 acre parcel of land located on the western side of Simmons
Street on the northern extent of the City of New Bern, Craven County, North Carolina. A public
access road will be extended off of Simmons Street and will be extended throughout the property
and will connect to Oaks Road as delineated on the project plans. The subject property was the
previous location of Renny's Creek Mine. A manmade lake covering a total area of
approximately 60 acres remains on the site.
The subject property has been divided by grading activities and natural topographic relief into
three primary drainage basins. Drainage Basin No. 1 covers a total approximately 15.63 acres
and is located adjacent to Simmons Street as presented on the project plans. It is proposed that a
total of 5.24 acres of impermeable surfaces be created in Drainage Basin No.I yielding a total
built -upon of 33.55%. Stormwater Retention Pond No. 1 will be constructed within Drainage
Basin No. I and has been sized for 90% TSS removal. All runoff from Drainage Basin No.1 will
be directed to the forebay area of Stormwater Retention Pond No. 1. Stormwater Retention Pond
No. 1 will discharge to the large existing manmade lake located on the site.
Drainage Basin No. 2 covers a total area of 15.21 acres of land as delineated in the project
calculations. It is proposed that a total of 6.18 acres of impermeable surfaces be created within
this drainage basin. Stormwater Retention Pond No. 2 will be constructed within this drainage
basin. This pond is designed for 90% TSS removal and will discharge to the existing manmade
lake on the property.
Drainage Basin No. 3 represents that portion of the property primarily covered by the existing
manmade lake and small fringe upland areas. Minimum impermeable surfaces are proposed for
this drainage basin. Specifically, it is proposed that a total of 14,000 square feet of roadway
surfaces be constructed in this basin. Stormwater runoff from this roadway area will be collected
and will be directed to the vegetated swale located along Oaks Road. The total built upon for
this drainage basin is 0.54%.
Considering the site in its entirety, it is proposed that a total of 511,292 square feet, 11.74 acres
of impermeable surfaces be created. The overall project built -upon percentage is 13.0%.
All Stormwater runoff from the subject property will ultimately discharge to the manmade lake
located on the property. One small existing outlet pipe is located on the northern side of this
pond and discharges under overflow conditions to the adjacent Renny's Creek. This outlet pipe
will not be altered in any manner. This manmade lake will provide additional treatment in
nitrogen removal for any runoff exiting the site.
The stormwater system proposed for this subdivision complies with the Coastal Stormwater
Permitting Regulations and also will provide nitrogen removal and runoff attenuation required to
comply with the City of New Bern Stormwater Permitting Program.
Permit No.
(to be provided by DWq)
(A, O� F W A TF9OG
NCDENR �
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION 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.
Project name
_- - - Lake New Bern —
Contact person
Steve Tyson
Phone number
252-514-9157
Date
January 16,200
Drainage area number
1
DESIGN;INFORMATION,as,tn,gSb•ii,:4PA%;c",,,Ii 'aaw—
Site Characteristics 2 /5— 63 &L ° i/
Drainage area 680,784 ft
Impervious area 228,409 ft2
%impervious 33.55 %
Design rainfall depth 1 in
Storage Volume: Non-SRWaters
Minimum volume required 29�621 fly
Volume provided 2�6�, 2121 ft3 ✓
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
— — — in
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
— — — rya
Minimum volume required
— — — ft3
Volume provided
— — — ft,
Peak Flow Calculations
Is pre/post control of the 1-yr 24-hr peak flow required?
Y (Y or N)
1-yr, 24-hr rainfall depth
0.5 in
Rational C, pre -development
0.3 (unitless)
Rational C, post -development
0.526 (unitless)
Rainfall intensity: 1-yr, 24-hr storm
'j Whir
Pre -development 1-yr, 24-hr peak flow
25 , 5 ft�/sec
Post -development 1-yr, 24-hr peak flow
7.57 ft'/sec
Pre/Post 1-yr, 24-hr peak flow control
7.57 ft3/sec
Basin Elevations
Basin bottom elevation
—5.0 ft
Sediment cleanout elevation
—3 , 25 it
Bottom of shelf elevation
1 .5 ft
Permanent pool elevation
2.0 ft
Top of shelf elevation
2.5 It
Temporary pool elevation
3.3 it
Volume and Surface Area Calculations
SAIDA ratio
1.21 (unitless)
Surface area at the bottom of shelf
, 2� 73 ft'
Volume at the bottom of shelf
0 ft3 /
Permanent pool, surface area required
$ 22 ft2 ✓
Permanent pool, surface area provided
20.2���ft2
Permanent pool volume
81 0025 ft3
Average depth for SAIDA tables
7ft
Surface area at the top of shelf
20,253 ft2
Volume at the lop of shelf
81,025 ft3
Form SW401-Wet Detention Basin-Rev.3 Parts I. & II. Design Summary, Page 1 of 2
Permit No.
(to be provided by DWq)
Forebay volume
ft'
Forebay % of permanent pool volume
2
Temporary pool, surface area provided
27,186
ft2 ✓
Drawdown Calculations
Treatment volume drawdown time
3.25
days
Treatment volume discharge rate
� 7.�7���
fi'Is
Pre -development 1-yr, 24-hr discharge
255.56
efs
Post -development 1-yr, 24-hr discharge
7.57
ft'Is
Additional Information
Diameter of orifice
2,5 in
Design TSS removal
90 %
Basin side slopes
3 :1
Vegetated shelf slope
10 :1
Vegetated shelf width
10 It
Length of flowpath to width ratio
2,6 .1
Length to width ratio
3.7 :1
Trash rack for overflow & orifice?
Y (Y or N)
Freeboard provided
4.2 ft
Vegetated filter provided?
N (Y or N)
Recorded drainage easement provided?
N (Y or N)
Capures all runoff at ultimate build -out?
Y (Y or N)
Drain mechanism for maintenance or emergencies
Pump
Form SW401-Wet Detention Basin-Rev.a Parts I. & II. Design Summary, Page 2 of 2
Permit
(to be provided by DWQ)
III:;REQUIRED,ITEMS,CHECKLISTa ` ! `w° fr : M"r,{t 2 wily �w, ii,;aw�4'«9$r
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.
Cl/4
1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
C10
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
C10
3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
C4
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
X
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
R
6. An assurance that the installed system will meet design specifications upon initial operation once the
project is complete and the entire drainage area is stabilized.
4- C1
7. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
X
8. The supporting calculations.
X
9. A copy of the signed and notarized inspection and maintenance (AM) agreement.
X
10, A copy of the deed restriction.
Form SW401-Wet Detention Basin-Rev.1 Part III. Required Items Checklist, Page 1 of 1
Permit Number:
(to he provided by Dlt'Q)
Drainage Area Number:_
Wet Detention Basin Inspection 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
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a known set
location and must 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 wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention 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.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin I&M-Rev.?
Permit Number:
(to he provided by DWQ)
Drainage Area Number: 1
BMP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
swale
sediment off -site.
"the pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the Swale if necessary to
swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
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 pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin I&M-Rev.?
Permit Number:
(to be provided btu DMQ)
Drainage Area Number: I
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
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 local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.25 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 5.25 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
(/ill in the blanks)
Permanent Pool Elevation 2.0
—3 25 l Pe manen Pool
------------------ VOlume Sediment Removal Elevation —3.25
—5.0 ft Min. -- - - ---------.
Sediment Bottom Elevation —5.0
Storage
FOREBAY MAIN POND
------- 1-fl Mai
Storage
Form SW401-Wet Detention Basin 1&M-Rev.2
Permit Number:
(to he provided by DWQ)
1 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 mane: Lake New Bern — A Planned Unit Development
BMP drainage area number:
Print
Title: Member/Manager
Address: 820 Broad Street. New Bern. NC 28560
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, Beth Simmons a Notary Public for the
State of North Carolina , County of Craven , do
hereby certify that Steve Tyson personally
appeared before me this `lJ , day of-.) 20 , and acknowledge
the due execution of the forgoing wet detention basin maintenance requirements.
Witness my hand and official seal,
SI M4f Nisi
NOTARY
y PUBLIC k�
��9aC) �
ij14i VeNltCp"\`xx
SEAL
My commission expires April 22. 2009
Form SW40I-Wet Detention Basin I&M-Rev.2
Permit
(to be Provided by DWq)
e
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION 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.
Project name
Contact person
Phone number
Date
Drainage area number
W A TF,
o�OF
v
� r
o
ILiDESIGNffNFORMATIONf
Site Characteristics
Drainage area
662 ft2 /S;Zf as
Impervious area
269,083 ry' 6. 8
%impervious
40.63 % r/
Design rainfall depth
1 in
Storage Volume: Non-SRWaters
/
Minimum volume required
319020 ft3 t/
Volume provided
312020 ft3
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
--- in
Pre -development 1-yr, 24-hr runoff
--- ft3
Post -development 1-yr, 24-hr runoff
— — — ft3
Minimum volume required
--- ft3
Volume provided
ft3
Peak Flow Calculations
Is pre/post control of the 1-yr 24-hr peak Flow required?
Y (Y or N)
1-yr, 24-hr rainfall depth
0.5 in
Rational C, pre -development
�0, (unitless)
Rational C, post -development
0.562 (unitless)
Rainfall intensity: 1 -yr, 24-hr storm
3,7 inlhr
Pre -development 1-yr, 24-hr peak Flow
24.87 ft3lsec
Post -development 1-yr, 24-hr peak flow
8.70 ft3lsec
Pre/Post 1-yr, 24-hr peak flow control
—B -7�— ft3/sec
Basin Elevations
/
Basin bottom elevation
—5.0 It ✓
Sediment cleanout elevation
—3.25 It
Bottom of shelf elevation
1 .7—ft /
Permanent pool elevation
2.0 It V
Top of shelf elevation
Temporary
2.5 It
pool elevation
3.6 It
Volume and Surface Area Calculations
SAIDA ratio
1.43 (unitless)
Surface area at the bottom of shelf
,Z _7$G___ ft2
Volume at the bottom of shelf
0 ft3
Permanent pool, surface area required
9,1, 71 ft2 ✓
Permanent pool, surface area provided
17 277 fit"
—,
Permanent pool volume
75,989 ft3
Average depth for SAIDA tables
7 fit
Surface area at the top of shelf
17,277 ft2
Volume at the top of shelf
75,989 ft3
Form SW401-Wet Detention Basin-Rev.3 Parts I. & II. Design Summary, Page 1 of 2
Permit
(to be provided by DWD)
Forebay volume
zj , IOU
It,
Forebay % of permanent pool volume
33.1
%
Temporary pool, surface area provided
22,801
ft'
Drawdown Calculations
Treatment volume drawdown time
3.5
days
Treatment volume discharge rate
8.70
ft'IS
Pre -development 1-yr, 24-hr discharge
24.87
ft'Is
Post -development 1-yr, 24-hr discharge
8.70
ft3Is /
Additional Information
Diameter of orifice
2, 5
in '✓//
Design TSS removal
90
% ✓
Basin side slopes
3
:1
Vegetated shelf slope
10
:1
Vegetated shelf width
10
ft
Length of flowpath to width ratio
3.2
:1
Length to width ratio
3.2
:1
Trash rack for overflow & orifice?
y
(Y or N)
Freeboard provided
5.4
ft
Vegetated filter provided?
N
(Y or N)
Recorded drainage easement provided?
N
(Y or N)
Capures all runoff at ultimate build -out?
Y
(Y or N)
Drain mechanism for maintenance or emergencies
mu�p
Form SW401-Wet Detention Basin-Rev.3 Parts I. & 11. Design Summary, Page 2 of 2
Permit
(to be provided by DWQ)
III:REQUIRED;ITEMSICHECKLIST,.s'w"a�h,�„ r�",�;'''±•,;+"��''�k'i%s`s`'��,�s�€k��.`t',�s%:�' ��vf�S�a
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.
C1 / 4
1. Plans (1" - 50' or larger) of the entire site shovWng:
- Design at ultimate build -out,
- Off -site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
C10
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Filter strip.
C10
3. Section view of the dry detention basin (1" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
-�- C4
4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
X
5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
%
6. An assurance that the installed system will meet design specifications upon initial operation once the
project is complete and the entire drainage area is stabilized.
C1
7. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
x__—
8. The supporting calculations.
/1 %
9. A the inspection
copy of signed and notarized and maintenance (I&M) agreement.
X
10. A copy of the deed restriction.
Form SW401-Wet Detention Basin-Rev.1 Part III. Required Items Checklist, Page 1 of 1
Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2
Wet Detention Basin Inspection 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
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ❑ does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention 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.
Vegetation is too short or too
Maintain vegetation at a height of
long.
approximately six inches.
Form SW401-Wet Detention Basin IRM-Rev.2
Permit Number:
(to be provided by DWQ)
Drainage Area Number: 2
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
Swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
Swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
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 pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin I&M-Rev.2
Permit Number:
(to be provided by D 111Q)
Drainage Area Number 2
BMP element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
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 local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.25 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 5.25 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 2.0
—325 Pe manen Pool
-------------- ---- Volume Sediment Removal Elevation —3.25
—5.0 -ft Min.
Sediment Bottom Elevation-5.0
Storage
FOREBAY
MAIN POND
1-ft
Storage
Form SW401-Wet Detention Basin 1$M-Rev.2
Permit Number:
(to he provided by UWQ)
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.
Prgject name: Lake New Bern — A Planned Unit Development
BMP drainage area number:
Print
Title: Member/Manager
Address: 820 Broad Street, New Bern, NC 28560
Note: The legally responsible party should not be a homeowners association unless more than 50%of
the lots have been sold and a resident of the subdivision has been named the president.
1, Beth Simmons , a Notary Public for the
State of North Carolina . County of Craven , do
hereby certify that Steve Tyson personally
appeared before me this l, l, 0 hday of 'Z Gd , and acknowledge
the due execution of the forgoing wet detention basin maintenance requirements.
Witness my hand and official seal,
SI
NOTARY
PUBLIC �--�
'tttnnnntt"�
SEAL
My commission expires April 22, 2009
Form SW401-Wet Detention Basin I&M-Rev.2