SW8001009_Current Permit_20090509

��A
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
May 18, 2009
Mr. Rick Blacher, Owner
Smith Creek Storage Facilities, Inc
5633 Market St.
Wilmington, NC 28405
Subject: Approved Plan Revision
Smith Creek Boat Storage
Stormwater Project No. SW8 001009
New Hanover County
Dear Mr. Blacher:
Dee Freeman
Secretary
On April 16, 2009, the Wilmington Regional Office received a plan revision for
Stormwater Management Permit Number SW8 001009. The revisions include an
additional building and wash down areas that were not previously included on the
January 10, 2005 approved plan. The future impervious allocation of 2,221 sf for this
permit is now limited to 1,324 sf. It has been determined that a formal permit
modification is not required for the proposed changes. We are forwarding you an
approved copy of the revised plans for your files. Please replace the old approved plan
sheet with the new one.
Please be aware that all terms and conditions of the permit issued on January 10,
2005, remain in full force and effect. Please also understand that the approval of this
revision to the approved plans for the subject State Stormwater Permit is done on a
case -by -case basis. Any other changes to this project must be approved through
this Office prior to construction. The issuance of this plan revision does not preclude
the permittee from complying with all other applicable statutes, rules, regulations or
ordinances which may have jurisdiction over the proposed activity, and obtaining a
permit or approval prior to construction.
If you have any questions concerning this matter,
Georgette Scott or me at (910) 796-?215.
r
Sincer /
David Cox
Environmental Senior Specialist
please do not hesitate to call
GDS1dwc: S:IWQSISTORMWATERIPERMIT1001009PR.may09
cc: Charlie Cazier, P.E.
New Hanover County Building Inspections
David Cox
Wilmington Regional Office
Central Files
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
NonrthCarohna
Natumllff

04/16/09
Stormwater Narrative
Smith Creek Storage Facility Phase I
New Hanover County, NC
PN 100-014
Smith Creek Storage Facility is an existing site which received a stormwater
permit modification on January 10, 2005. The site was constructed slightly different
then the permitted set of plans. We have reviewed the site and have approximate
current impervious area numbers based on as -built survey information from Chris
Clover PLS. The Current site has 41,704 sf of Building, 67,412 sf of parking, 1,489 sf of
sidewalks/concrete, and allocation for 1,524 sf of future impervious coverage. Therefore
the total of 111,929 sf and 71% impervious coverage remains the same as the January lo,
2005 permit.
The Smith Creek Storage Facility was permitted high density treated by a wet
detention facility. The pond has been constructed and will be verified for correct
installation prior to certification. Runoff from this site will ultimately reach Spring
Branch Classification "C-SW".
Azk*.�Q� �"
APP 1. V o
By �00

DWQ USE ONLY
Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quual t,-
STORMWATER MANAGEMENT PERMIT APPLICA' N FORM
This form may be photocopied for use as an original r
�f� V
�ry
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Smith Creek Storage Facilities, Inc.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Rick Blacher/ er '�rQ•,;�o,r�
3. Mailing Address for person listed in item 2 above:
5633 Market St.
City:Wilmington State:NC Zip:28405
Phone: [phone] Fax: (910 ) 793-1004
Email:[e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Smith Creek Storage Facility Phase I
5. Location of Project (street address):
5633 Market St.
City:Wih m lon County:New Hanover Zip:28405
6. Directions to project (from nearest major intersection):
At the intersection of NC 17 and NC 74 Travel north on 17 approximately 0.15mi and turn left on service rd.
Site will be on your right 5633 Market St. Smith Creek Storage.
7. Latitude:34° 15' 00" N Longitude:77° 51' 46" W of project
8. Contact person who can answer questions about the project:
Name:Charles D. Cazier Telephone Number: (910 ) 409-3567
Email:[e-mail]
II. PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New ❑Renewal NModification
Fonn SWU-101 Version 03.27.08 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 numberSW8 001009 Mod and its issue date (if known)Tanuary 10,2005
3. Specify the type of project (check one):
❑Low Density ®High Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major NSedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
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.
Wet Detention Pond
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 3.64 acres 4. Total Wetlands Area: NA acres
5. 100' Wide Strip of Wetland Area: NA acres (not applicable if no wetlands exist on site)
6. Total Project Area**:3.64 acres 7. Project Built Upon Area:71.0 %
8. How many drainage areas does the project have?1
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.
For high density projects, com lete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Spring Branch
Stream Class & Index No.
C-SW
Total Drainage Area (sf)
3.64
On -site Drainage Area (sf)
3.64
Off -site Drainage Area (sf)
-
Existing Impervious* Area (sf)
Proposed Impervious*Area (sf)
111,930 sf
% Impervious* Area (total)
71.0
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
41,704 sf
On -site Streets (sf)
On -site Parking (sf)
67,412 sf
On -site Sidewalks (so
1,489 sf
Other on -site (so r�
1,324 sf
Off -site (sf)
Total (so:
111,929 sf
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. This is the area used to calculate percent project built upon area (BUA).
Form SVVU-101 Version 03.27.08 Page 2 of 4

10. How was the off -site impervious area listed above derived?NA
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. Forms can be
downloaded from htip://h2o.enr.state.nc.us/su/bml2 forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC4
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 [phone] for the status
and availability of these forms. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bml2 forms.htm.
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
Form SW401-Permeable Pavement
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
Permeable Pavement Supplement
Form SWU-101 Version 03.27.08 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 hqp://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 (if
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two 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
Initials
ccr�
t�le�
- 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. (ex. designing engineer or firm)
Designated agent (individual or firm):NA
Mailing Address:
City: State: Zip:
Phone: ( ) Fax:
Email:
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Richard Blacher
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 coven will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 21-1.1000. / / f/
Signature ! �����%�� 1 Date:_
Form SWU-101 Version 03.27.08 Page 4 of 4

DWQ USE ONLY
Date Received Fee Paid Permit Number
State of North Carolina
Department of Environment and Natural Resources
Division of rWater Qualiiy
STORMWATER MANAGEMENT PERMIT APPLICATIORIVI�
This form may be photocopied for use as an original
V
19
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Smith Creek Storage Facilities Inc.
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Rick Blacher/ 'Pc®,7� JgMA
3. Mailing Address for person listed in item 2 above:
5633 Market St.
City: Wilmington State:NC Zip:28405
Phone: [phone] Fax: (910 ) 793-1004
Email:[e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
Smith Creek Storage Facility Phase I
5. Location of Project (street address):
5633 Market St.
City:Wilmington County:New Hanover Zip:28405
6. Directions to project (from nearest major intersection):
At the intersection of NC 17 and NC 74 Travel north on 17 approximately 0.15mi and turn left on service rd.
Site will be on your right 5633 Market St. Smith Creek Storage.
7. Latitude:34° 15' 00" N Longitude:77° 51' 46" W of project
8. Contact person who can answer questions about the project:
Name:Charles D. CaZier Telephone Number: (910 ) 409-3567
Email:Charlie®intracoastalengineering_com _
II. PERMIT INFORMATION:
1. Specify whether project is (check one): MNew []Renewal ZModification
Form SWU-101 Version 03.27.08 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 numberSW8 001009 Mod and its issue date (if known)Tanuary 10,2005
3. Specify the type of project (check one):
❑Low Density NHigh Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/401 Permit ❑NPDES Stormwater
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.
Wet Detention Pond
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Property Area: 3.64 acres 4. Total Wetlands Area: NA acres
5. 100' Wide Strip of Wetland Area: NA acres (not applicable if no wetlands exist on site)
6. Total Project Area**:3.64 acres 7. Project Built Upon Area:71.0 %
8. How many drainage areas does the project have?1
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.
For high density projects, complete the table with one drainage area for each engineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
Receiving Stream Name
Spring Branch
Stream Class & Index No.
C-SW
Total Drainage Area (sf)
3.64
On -site Drainage Area (sf)
3.64
Off -site Drainage Area (sf)
-
Existing Impervious* Area (sf)
Proposed Impervious*Area Of)
111,930 sf
% Impervious* Area (total)
71.0
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (sf)
41,704 sf
On -site Streets (sf)
On -site Parking (so
67,412 sf
On -site Sidewalks (sf)
1,489 sf
Other on -site (sf)
1,324 sf
Off -site (sf)
Total (sf):
111,929 sf
" 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 calcu!aticn. This is the area used to calculate percent project built upon area (BUA).
Form SWU-101 Version 03.27.08 Page 2 of

10. How was the off -site impervious area listed above derived?NA
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. Forms can be
downloaded from http://h2o.enr.state.nc.us/su/bml2 forms.htm - deed restrictions.
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 [phone] for the status
and availability of these forms. Forms can be downloaded from http://h2o.enr.state.nc.us/su/bml2 forms.htm.
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
Form SW401-Permeable Pavement
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
Permeable Pavement Supplement
Form SWU-101 Version 03.27.08 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 ho://h2o.enr.state.ne.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.
Initials
• Original and one copy of the Stormwater Management Permit Application Form DG
• Original and one copy of the Deed Restrictions & Protective Covenants Form (if NA
required as per Part IV above)
• OriginaI of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR 11�JL,
• Calculations & detailed narrative description of stormwater treatment/management GtX�
• Copy of any applicable soils report
• Two 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. (ex. designing engineer or firm)
Designated agent (individual or firm):NA
Mailing Address:
City: State: Zip:
Phone: ( ) Fax:
Email:
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Richard Blacher
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 coven will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1 0%
Signature: • Date: -�
Form SWU-101 Version 03.27.08 Page 4 of 4

W
State Stormwater Management Systems
Permit No. SW8 001009 Modification
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
Richard B/acher, Smith Creek Storage Facilities, Inc.
Smith Creek Storage Facility Phase /
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until January 10, 2015, 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 Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 111,929 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans. The built -upon area for the future
development is limited to 2,221 square feet.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project mustLba directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
DrainaArea, acres:
gnsite,
3.64
ft :
158,449
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
111,929
C.
Design Storm, inches:
1
d.
Pond Depth, feet:
6.5
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
24.00
g.
Permanent Pool Surface Area, ft2:
6,603
h.
Permitted Storage Volume, ft3:
10,159
i.
Temporary Storage Elevation, FMSL:
25.37
j.
Controlling Orifice:
1.5"0 pipe
k.
Permitted Forebay Volume, ft3:
3,018
I.
Receiving Stream/River Basin:
Spring Branch / Cape Fear
M.
Stream Index Number:
18-74-63-1
n.
Classification of Water Body:
"C;Sw"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. Decorative spray fountains will be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in this pond is 1/8 horsepower.
6. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
7. Ripon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file b
the Permittee for a minimum of ten years from the date of the completion of
construction.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sedime^t Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 10t" day of January, 2005.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
4 d" � Alan Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Januray 10, 2005
Rick Blacher, Owner
Smith Creek Storage Facilities, Inc.
5633 Market Street
Wilmington, NC 28405
Subject: Stormwater Permit No. SW8 001009 Modification
Smith Creek Storage Facility Phase I
High Density Project
New Hanover County
Dear Mr. Blacher:
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
Smith Creek Storage Facility Phase I on December 17, 2004. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 001009
Modification dated January 10, 2005, for the construction of the subject project.
This permit shall be effective from the date of issuance until January 10, 2015, 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
Rhonda Hall, or me at [phone].
Sincerely,
Rick Shiver
Regional Supervisor
Surface Water Protection Section
RSS/rbh: S:IWQSISTORMWATIPERMIT1001009mod.jan05
cc: James Honeycutt, P. E., Honeycutt Engineering
Joseph Gray, III, TMC-Taylor Construction, Inc.
New Hanover County Building Inspections
City of Wilmington Stormwater Services
Beth E. Wetherill, New Hanover County Engineering
Rhonda Hall
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel-877-623-6748
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Internet: h2o.enr.state.nc.us One
NofthCarollina
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper NQ't(1+M4

State Stormwater Management Systems
Permit No. SW8 001009 Modification
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
Richard Blacher, Smith Creek Storage Facilities, Inc.
Smith Creek Storage Facility Phase 1
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until January 10, 2015, 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 Section 1.6 on page 3 of this permit. The stormwater
control has been designed to handle the runoff from 111,929 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated on page 3 of
this permit, and per approved plans. The built -upon area for the future
development is limited to 2,221 square feet.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a.
Drainage Area, 9cres:
3.64
Onsite, ft :
158,449
Offsite, ft2:
None
b.
Total Impervious Surfaces, ft2:
111,929
C.
Design Storm, inches:
1
d.
Pond Depth, feet:
6.5
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
24.00
g.
Permanent Pool Surface Area, ft2:
6,603
h.
Permitted Storage Volume, ft3:
10,159
I.
Temporary Storage Elevation, FMSL:
25.37
j.
Controlling Orifice:
1.5" 0 pipe
k.
Permitted Forebay Volume, ft3:
3,018
I.
Receiving Stream/River Basin:
Spring Branch / Cape Fear
M.
Stream Index Number:
18-74-63-1
n.
Classification of Water Body:
"C;Sw"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. Decorative spray fountains will be allowed in the stormwater treatment system;
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in this pond is 1/8 horsepower.
6. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by
the ermittee for a minimum of ten years from the date of the completion of
construction.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
13. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 10t' day of January, 2005.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Alan W. Klimek, P�., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
Smith Creek Storage Facility Phase I
Stormwater Permit No. SW8 001009 Modification
New Hanover Countv
Designer's Certification
1, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW8 001009 Modification
Certification Requirements:
_1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
cc: NCDBNR-DWQ Regional Office
New Hanover County Building Inspections
Page 7 of 7

::.::::............:.. . .
77.
Received
Fee Paid
Permit Number
_Date
State of North Carolina
Department of. Environment and Natural Resources
xrxwxslOri Of Watter Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
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):
Smith Creek Storage Faei1ftT-.-hqg- Vg C , \ -, r,— .
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Richard Blacher, Owner
3. Mailing Address for person listed in item 2 above:
5633 Market Street
City: Wilmington State: NC Zip: 28405
Telephone Number: 910-799-5433
4. Project Name (subdivision, facility, or establishment name —should be consistent with project naive on
plans, specifications, letters, operation and maintenance agreements, etc.):
Smith Creek Storage Facility Phase I
5. Location of Project (street address):
Service Road (SR 2650)
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From the intersection of US Hwy 17 and Hwy 74, travel 1 block northeast, turn left on Service Road.
Site is on right on Service Road.
7. Latitude : N 34' 00' 00" Longitude: W 770 00' 00" of project
8. Contact person who can answer questions about the project:
Naine: Jodie Gray Telephone Number: 910-251-1181
II. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal X 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 SW8001009 MOD and its issue date (if known) 9/2/03
3. Specify the type of project (check one):
_ Low Density X High Density Redevelop General Permit Other
4. Additicaal Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404//401 Pen -nit 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, stummarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
wet detention
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. Total Project Area: 3.64 acres
5. How many drainage basins does the project have? 1
4. Project Built Upon Area: 71.0 %.
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.
Receiving Stream Name Sm4h€��eek 5 c-,, ,
Receiving Stream Class C-SW
Drainage Basin Area 3.64
Existing Impervious * Area -
Proposed Impervious * Area 2.57
% Impervious* Area (total) 71%
On -site Buildings 40,040 sf
On -site Streets
On -site Parking 69,182 sf
On -site Sidewalks 486
Other on -site - Future 2;2-H sf
Off -site
Total: E=111,929 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 urotective 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 following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division of Water Quality. These covenants may
not be changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures of impervious materials.
Impervious materials include asphalt, gravel, concrete, brick stone, slate or similar material but do not include wood
decking or the water surface ofswimmingpools.
3. Swales shall not be filled in, piped or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior
to construction.
5. All permitted runoff from outparcels or future 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 the system 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 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 storinwater management permit supplement form(s) listed below must be submitted for
each BMP specified for this project. Contact the Stonnwater and General Pen -nits Unit at [phone] 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 Basil 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.
1. 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
• Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
- Developinent/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number and 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 stornwater 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): Tripe Engineering, P.C.
Mailing Address: 419 Chestnut Street
City: Wilmin on State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Richard Blacher ,
certify that the information included on this permit application form is, to the best of my knowledge, correct and
that the project will be constricted 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:
Form SWU-101 Version 3.99 Page 4 of 4

Permit No. 9,6o / D Uq/411��
(to be provided by DN Q)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
S T ORM)WA'I ER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stonnwater management plan submittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details, and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Smith Creek Storage Facilities Inc.
Contact Person: Richard Blacher Phone Number: [phone]
For projects with multiple basins, specify which basin this worksheet applies to: 1
elevations
Basin Bottom Elevation
17.50 ft.
Permanent Pool Elevation
24.00 ft.
Temporary Pool Elevation
25.37 ft.
(floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 6603 sq.ft. (water surface area at the orifice elevation)
Drainage Area 3.64 ac. (on -site and off -site drainage to the basin)
Impervious Area 2.57 ac. (on -site and off -site drainage to the basin)
volumes
Permanent Pool Volume 14;159_ cu.ft. (combined volume of main basin and forebay)
Temporary Pool Volume 10,159 cu.ft. (volume detained above the permanent pool)
Forebay Volume 3,018 cu.ft. (approximately 20% of total volume)
Other parameters
SA/DA' .034 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 1.5_ in. (2 to 5 day temporary pool draw -down required
Design Rainfall 1.0 in.
Design TSS Removal2 90 % (minimum 85% required)
Fonn SWU-102 Rev 3.99 Page 1 of 4

Footnotes:
1. When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2. In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BNIP manual provides design tables for both 85% TSS removal and 90% TSS removal.
H. 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. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 7 1/2 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the total basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations).
f. The basin length to width ratio is greater than 3: 1.
g. The basin side slopes above the permanent pool are no steeper than 3: 1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified to be performed prior to use as a wet detention basin
A mechanism is specified which will drain the basin for maintenance or an emergency.
Portable pump.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
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 X does not incorporate a vegetated filter at the outlet.
This system (check one) ❑ does X does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). 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 wet detention basin or stream, etc.).
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 _4.875 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 4.875_ feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 24.0
Sediment moval El. _19.12 J75 o
- - - - - - - - - - - / Sediment Removal Elevation 19.12 75%
Bottom evation 17.50 % --------------------------------------------
Bottom Elevation 17.50 f 25%q
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent possible.
Form SWU-102 Rev 3.99 Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
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. Richard Biacher
Title: Owner
Address: 5633 Market Street, Wilmington NC 28405
Phone
Signal
Date
Note: The legally responsible party should not be a homeowners association iufless more than 50% of the lots have been sold and
a resident of the subdivision has been named the president.
I,�QAQ �6� a Notary Public for the State of North Carolina ,
County of do hereby certify that Richard Blacher
personally appeared before me this day of , 200 and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
e �,,,` �G• w�n
W
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a gITBLIC CS
0VER
SEAL
My commission expires _ \ I I i 12-005
Form SWU-102 Rev 3.99 Page 4 of 4