SW8000824_HISTORICAL FILE_20021021

STORMWATER DIVISION CODING SHEET
POST-CONSTRUCTION PERMITS
PERMIT NO. SW8
DOC TYPE ❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
MMDD

�QF WA7F,� Michael F. Easley, Governor
�Q Secreta
y North Carolina Department of Environmllentland Natural G. RossrResourrces
� r
y Alan W. Klimek, P.E., Director
p Y Division of Water Quality
Wilmington Regional Office
_ October 21, 2002
Mr. Norman Sneeden ,
-- PO Box 1509
Wrightsville Beach, NC 28480
Subject: Permit No. SW8 000824 Modification
Hermitage Park Warehouse
High Density Stormwater Project
New Hanover County
Dear Mr. Sneeden:
The Wilmington Regional Office received a complete modification to the Stormwater
Management Permit Application for Hermitage Park Warehouse on September 18, 2002. 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 000824 Modification dated October 21, 2002, for the construction of Hermitage
Park Warehouse.
This permit shall be effective from the date of issuance until October 21, 2002, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to the
Operation and Maintenance requirements in this permit. Failure to establish an adequate system
for operation and maintenance of the stormwater management system will result in future
compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty(30) days following
receipt of this permit. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact
Linda Lewis, or me at [phone].
Sincerely,
L(L
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:\WQS\STORMWAT\PERMIT\000824.00T
cc: Phil Tripp, P.E.
New Hanover County Building Inspections
Beth E. Wetherill, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
AM
NCDENR
N.C.Division of Water Duality 127 Cardinal Drive Extension Wilmington, N.C.28405 [phone] Fax[phone] Customer Service
800-623-7748

State Stormwater Management Systems
Permit No. SW8 000824 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
Mr. Norman Sneeden, Owner
Hermitage Park Warehouse
New Hanover County
FOR THE
construction, operation and maintenance of a wet detention pond in compliance with the
provisions of 15A NCAC 21I .1000 (hereafter referred to as the "stormwater rules') and the
approved stormwater management plans and specifications and other supporting data as attached
and on file with and approved by the Division of Water Quality and considered a part of this
permit.
This permit shall be effective from the date of issuance until October 21, 2002, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described on page 3 of this permit, the Project Data Sheet. The stormwater control has
been designed to handle the runoff from 131,896 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.
4. All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements. The final plats for the project will be recorded
showing all such required easements, in accordance with the approved plans.
5. The runoff from all built-upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system. A permit modification must be
submitted and approved prior to the construction of additional built-upon area from
outside of the approved drainage area.
2

State Stormwater Management Systems
Permit No. SW8 000824 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
Mr. Norman Sneeden, Owner
Hermitage Park Warehouse
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 October 21, 2002, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
-t
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater runoff as
described on page 3 of this permit, the Project Data Sheet. The stormwater control has
been designed to handle the runoff from 131,896 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.
4. All stormwater collection and treatment systems must be located in either dedicated
common areas or recorded easements. The final plats for the project will be recorded
showing all such required easements, in accordance with the approved plans.
5. The runoff from all built-upon area within the permitted drainage area of this project must
be directed into the permitted stormwater control system. A permit modification must be
submitted and approved prior to the construction of additional built-upon area from
outside of the approved drainage area.
2

State Stormwater Management Systems
Permit No. SW8 000824 Modification
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: Hermitage Park Warehouse
Permit Number: SW8 000824 Modification
Location: New Hanover County
Applicant: Mr. Norman Sneeden
Mailing Address: PO Box 1509
Wrightsville Beach, NC 28480
Application Date: September 18, 2002
Receiving Stream/River Basin/Index #: UT Prince George Creek/ Cape Fear/ 18-74-53
Classification of Water Body: "C Sw"
Pond Depth, feet: 6
Permanent Pool Elevation, FMSL: _ 25
Drainage Area, acres: 8.3
Total Impervious Surfaces, ft2: 131,896
Offsite Area entering Pond, ftz: Rerouted, via swales (see approved plan)
Required Surface Area, ftz: 6,956
Provided Surface Area, 112: 16,947
Required Storage Volume, ft': 14,819
Provided Storage Volume, ft3: 18,023
Temporary Storage Elevation, FMSL: 26
Controlling Orifice: 2"(p pipe
3

State Stormwater Management Systems
Permit No. SW8 000824 Modification
II. SCHEDULE OF COMPLIANCE
I. The stormwater management system shall be constructed in it's entirety, vegetated and
operational for its intended use prior to the construction of any built-upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to assure
the permitted stormwater system functions at optimum efficiency. The approved
Operation and Maintenance Plan must be followed in its entirety and maintenance must
occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
C. 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.
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 not be allowed in the stormwater treatment system.
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. 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.
C. Further subdivision, acquisition, or sale 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.
4

State Stormwater Management Systems
Permit No. SW8 000824 Modification
10. The permittee shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction. If the proposed BUA exceeds
the amount permitted under this permit, a modification to the permit must be submitted
and approved prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of ten years from the date of the completion of construction.
12. Prior to the sale or lease of any portion of the property, the permittee shall notify DWQ
and provide the name, mailing address and phone number of the purchaser or leasee. An
access/maintenance easement to the stormwater facilities shall be granted in favor of the
permittee if access to the stormwater facilities will be restricted by the sale or lease of any
portion of the property.
13. The permittee must maintain compliance with the proposed built-upon area and ensure
that the runoff from all the built-upon is directed into the permitted system.
14. The Director may notify the permittee when the permitted site does not meet one or more
of the minimum requirements of the permit. Within the time frame specified in the notice,
the permittee shall submit a written time schedule to the Director for modifying the site to
meet minimum requirements. The permittee shall provide copies of revised plans and
certification in writing to the Director that the changes have been made.
III. GENERAL CONDITIONS
1. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an application fee,
documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved. Responsibility for compliance with all permit conditions remains with
the Permittee until such time as the Division approves the formal permit request.
2. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to enforcement action by the Division of Water Quality, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
as may be required by this Division, such as the construction of additional or replacement
stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal business
hours for the purpose of inspecting all components of the permitted stormwater
management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The filing of
a request for a permit modification, revocation and reissuance or termination does not
stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater control
must follow the guidelines established in the North Carolina Erosion and Sediment
Control Planning and Design Manual.
5

State Stormwater Management Systems
Permit No. SW8 000824 Modification
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 21st day of October, 2002.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Q'-.A C�t� '4 n A Gl
Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
6

,.
Date Received Fee Paid Permit Number
16 r 2, SGu$ UW d'Z D
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Hermitage Park Warehousing
2. Print Owner/Signing Official's name and title(person legally responsible for facility and compliance):
Norman Sneeden/Owner
3. Mailing Address for person listed in item 2 above:
P.O. Box 1509
City: Wrightsville Beach State: NC Zip: 28480
Telephone Number: 910-791-6841
4. Project Name (subdivision, facility, or establishment name— should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Hermitage Park Warehouse Expansion
5. Location of Project (street address):
4000 Blue Clay Road
City: Wilmington County: New Hanover
6. Directions to project(from nearest major intersection):
From the intersection of 132 and Blue Clav Road,travel south on Blue Clay Road for Approximately
85 mile Site is on an access road. 4000 Blue Clay Road
7. Latitude : N 340 19' 00" Longitude: W 770 55' 00" of project
8. Contact person who can answer questions about the project:
Name: Charles D. Cazier Telephone Number: 910-763-5100
11. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal X Modification
Form S WU-101 Version 3.99 Pagel of 4

i
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number SW8 000824 and its issue date(if known) 12/14/00
3. Specify the type of project(check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control _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.
wet detention
2. Stormwater runoff from this project drains to the-Cape Fear River basin.
3. Total Project Area: 13.7 acres 4. Project Built Upon Area: 22.12 %.
5. How many drainage basins does the project have? 1
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 Unnamed nib to Prince George Creek
Receiving Stream Class C-SW
Drainage Basin Area 8.3 ac
Existing Impervious * Area 1.5lac
Proposed Impervious *Area 3.03ac
%Impervious* Area(total) 36.48%
bg al", ,ON I_ , n
On-site Buildings 79,980 sf
On-site Streets -
On-site Parking 51,916 sf
On-site Sidewalks -
Other on-site
Off-site
Total: E=131,896sf 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? NA
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built-upon area for each lot must be provided as an
attachment.
I. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number NA as issued by the Division of Water Quality 7hese covenants may
not be changed or deleted without the consent of the State.
2. No more than NA square feet ofary lot shall be covered by structures ofimpervious materials.
Impervious materials include.asphah,,gravel, concrete, brick, stone,slate or similar material but do not include wood
decking or the water surface ofswimming pools.
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 nmofffrom outparcels orfuture development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the
integrity and performance of 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 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.
Form SWU-102 Wet Detention Basin Supplement
Form SWU-103 Infiltration Basin Supplement
Form SWU-104 Low Density Supplement
Form SWU-105 Curb Outlet System Supplement
Form SWU-106 Off-Site System Supplement
Form SWU-107 Underground Infiltration Trench Supplement
Form SWU-108 Neuse River Basin Supplement
Form SWU-109 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 fisted 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 LDL
• One copy of the applicable Supplement Form(s) for each BMP 6D6
• Permit application processing fee of$420 (payable to NCDENR) .
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
- Development/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 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): Tripp Engineering, P.C.
Mailing Address: 419 Chestnut Street
City: Wilmington State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VII1. APPLICANT'S CERTIFICATION
1, (print or type name ofperson listed in General Information, item 2) Norman Sneeden
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 rec ded, and at the proposed project complies with the requirements of 15A
NCAC 2H .1
Signature: Date:
Form SWU-101 Version 3.99 Page 4 of 4

TE 00086
Permit No. SW8 000824
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review
A complete stormwater 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.
1. PROJECT INFORMATION (please complete the following information):
Project Name: Hermitage Park Warehouse Expansion
Contact Person: Charles D. Cazier Phone Number. ( 910 ) 763-5100
For projects with multiple basins, specify which basin this worksheet applies to: 1
elevations
Basin Bottom Elevation 19.0 ft. (floor of the basin)
Permanent Pool Elevation 25.0 ft. (elevation of the orifice)
Temporary Pool Elevation 26.0 ft. (elevation of the discharge structure overflow)
44, 42
iu%a
areas
Permanent Pool Surface Area 16_— 7 sq.ft. (water surface area at the orifice elevation)
Drainage Area 8.3 ac. (on-site and off-site drainage to the basin)
Impervious Area 3.03 ac. (on-site and off-site drainage to the basin)
volumes
Permanent Pool Volume 5� 9 947_ cu.ft. (combined volume of main basin and forebay)
Temporary Pool Volume I8,023_cu.ft. (volume detained above the permanent pool)
Forebay Volume _I 1,463_cu.ft. (approximately 20% of total volume)
Other parameters
SAIDA' _1.95 (surface area to drainage area ratio from DWQ table)
Diameter of Orifice 2.0 in. (2 to 5 day temporary pool draw-down required)
Design Rainfall 1.0 in.
Design TSS Remova12 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 BMP manual provides design tables for both 85%TSS removal and 90%TSS removal.
II. 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
0-01, a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
Crx. b. The forebay volume is approximately equal to 20% of the total basin volume.
Cps, c. The temporary pool controls runoff from the design storm event.
Co( d. The temporary pool draws down in 2 to 5 days.
CDC e. If required, a 30-foot vegetative filter is provided at the outlet (include non-erosive flow
calculations).
yL 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.
COC 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.
CDG k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
LpG 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
in. A mechanism is specified which will drain the basin for maintenance or an emergency.
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:
1. 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 treasuring 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 4.5 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 2.25_feet in the £orebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
Permanent Pool Elevation 25
Sediment moval El. 22.75 75/o
--------- - - Sediment Removal Elevation 20.5 75%
Bottom evation 22.0 5% ---------------------------------------------- -----
Bottom Elevation 19 250
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: Norman Sneeden/Hermitage Park Warehousing
Title: Owner
Address: P.O. Box 1509. Wrightsville Beach NC 28480
Phone: [phone]
Signature: '
Date: Lj
Note: The legally responsible parry 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, 1 a Notary Public for the State of North Carolina
County of do hereby certify that Norman Sneeden
personally appeared before me this 7Io day of 2002_ and acknowledge the due
execution of the forgoing wet detention basin�maintenance requirements. Witness my hand and official seal,
tv'% PUBLIC ',C.'
SEAL
My commission expires o6c-_ r F:-),ZOO(p
Form SWU-102 Rev 3.99 Page 4 of 4

TRIPP ENGINEERING, P.C.
0 419 Chestnut Street
Wilmington, North Camlina 28401
Phone: [phone] • FAX: [phone]
CEIVED
September 18, 2002
SEP 18 2002
NCDENR
Division Water Quality BY:
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: Hermitage Park Warehouse
SW8 000824
New Hanover County, NC
TE 02034
Dear Linda:
In response to your correspondence dated July 12, 2002, we offer the following:
1. The existing southeast property line ditch has been noted as "Waters of the
U.S." Asper Angie Pennock, November, 2000.
2. All previously proposed elevations, dimensions, etc. have been shown on
the plan.
3. We have obtained an asbuilt survey of the pond. New square foot areas
for all contours are provided. A certification inspection will be performed
upon approval of the permit for the current pond construction.
4. An additional C-1 sheet has been highlighted and enclosed to show the 8.3
acre drainage area.
5. A revised `Wet Detention Pond Supplement' page I of 4.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
Charles D. Cazier, E.I.
CDC:dcb
Enc.

9/18/2002 HERMITAGE PARK WAREHOUSE Expansion 02034
CDC Stonnwater Calculations
Total Drainage Area
s .ft. acres
361,548 8.30
Impervious Area
Land Use s .ft. acres
buildings 79.980 1.64 %impervious= 0.365
raveU a ng 51,916 1.19 = 36.5%
Total I 131,896 I 3.03 say 37.0%
Stormwater Calculations:
Time of Concentration:
Hydraulic Length(L)= 1,300 ft.
change in Height(H)= 4.5 ft.
Tc = (L'IH)4'/128
17.29 min. CPRE= 0.25
C,,v= I%imp.)(.95)+(1-%imp.)(.25)
Flow for 10 year,6 hour Storm(Qro): = 0.51
QPRE_ (CpeE)x(I10)x(Area) I10= 6.30 in/hr
13.07 cfs 125= 7.13 in/hr
QPosr= (CPosr)x Oro)x(Area)
26.67 cis Flow for 25 year,6 hour Storm(Q25):
QeRe= (CPRe)x(125)x(Area)
Soil Storage Capacity for 10 year Storm: = 14.79 cis
CN= (98)(°h imp.)+(60)(1-%imp.) QPosr= (CPosr)x(125)x(Area)
74 = 30.18 cis
P= 4.82 in. for,0yr,6 hr storm
S= 1000/CN-10 Soil Storage Capacity for 25 year Storm:
3.51 CN= (98)(%imp.)+(60)(1-%imp.)
Depth(0)= (P-(0.2)(S)]'/[P+(0.8)(S)] = 74
2.22 in. P= 5.71 in. for 25 yr,6 hr storm
S= 1000/CN-10
Time to Peak Flow: = 3.51
TP= [(43.5)(D)(Area)]/QZPosr Depth(D)= [P-(0.2)(S)1`/[P+(0.8)(S)]
30.08 min. = 2.94 in.
Detention Pond Design: Time to Peak Flow:
TP= [(43.5)(D)(Area)]/Qra,Posr
Pond Size: = 35.20 min.
71
Elevation Surface Area
ft. (sq.ft.
Normal Pool 25.00 16,947 State Surface Area Requirement at normalpool:
Flood Pool 26.00 19,098 Pond side slopes= 3 :1
To of Bank 28.00 23,600 Depth below N.P.= 6 ft.
Bottom of Pool 19.00 4,553 SA/DA= 0.0195
(Chart for 90%TSS Removal for Wet Detention
Provided Storage Volume: Pond without Vegetative Filter
Vol._ [(Normal pool SA+Flood Pool SA)/21 Required SA= (SA/DA)x(Total Drainage Area)
x(F.P.elev.-N.P.elev.) = 7,050 s .ft.
18,023 cu.ft.
Slate Volume Required for Storage of first 1"of runoff:
Vol.= [(1/12)X(DA)X(%imp.]+
\\``��oOQ�ICAROliy9% _ [(1
142
s1e(0
u)ft( °6imp.)xC]
RECEIVED ; � .:Frssroy.
at SEAL 9 i
SEP 18 2002 = A':" 17374 zz
a
n %�!"-.41GIDWQ
NE``Q"xQ
PROD #
PA.
02034POND 1 of 2

r '
9/1812002 HERMITAGE PARK WAREHOUSE Expansion 02034
CDC Stormwater Calculations
Pond Volume:
Bottom SA= 4,553 sq.ft.
Normal Pool SA= 16,947 sq.ft.
Vol.= [(N.P.SA+Bottom SA)/21 x(N.P.at.-Bottom el.)
= 59,125 cu.ft.
Forebay:
Re uired Volume Provided Volume
Vol.- 20%of total permanent storage volume Bottom SA= 2.713 sq.ft.
= 11.825 cu.ft. Normal Pool SA= 4,929 sq.ft.
Vol.= [(N.P.SA+ Bottom SA)/21 x(N.P.el.-Bottom el.)
11,463 cu.ft.
depth
Outlet Structure Design:
Flow for 2-day drawdown: Flow for 5-day drawdown:
for 1st 1'of stormwater, for 1st 1'of stormwater,
Q= Required Vol.1172,800 sec.(2-days) Q= Required Vol.1432,000 sec.(5-days)
= 0.086 cfs = 0.034 cis
Required Area of Pipe for 2-day drawdown: Required Area of Pipe for 5-day drawdown:
A= Q/[Cd x SQRT(2 x g x h)) A= Q/(Cd x SQRT(2 x g x h)]
Cd= 0.6 Cd= 0.6
9= 32.2 ft./s2 9= 32.2 ft./s2
h= (F.P.elev:N.P.elev.)/2 h= (F.P.elev.-N.P.elev.)/2
0.5 ft. = 0.5 ft.
A= 0.0252 sq.ft. A= 0.0101 sq.ft.
Diameter of Pipe for 2-day dmwdown: Diameter of Pipe far 5-day drawdown:
OIA.= SQRT[(A x 4)/pi] DIA.= SQRT[(A x 4)/pi]
0.1791 ft. = 0.1133 ft.
2.15 in. = 1.36 in.
'Use:2 in diameter i e
Outlet Structure Check:
i
Using a 4-x W Basin,
Perimeter L = 16 ft.
Q= CIA
-
= 0.51
I= 7.13 in.for a 25 yr.Storm
A= 8.30 Acres
30.18 cfs
Q= Cwx Lx H"
H= (Q/(Cw x L)IM
Cw= 3
0.73 ft.
Peak elevation= flood pool elevation+H
26.73 ft.
02034POND 2 of 2

WATF9Q Michael F. Easley, Governor
\O C, William G. Ross, Jr., Secretary
CO y North Carolina Department of Environment and Natural Resources
r _
—i Alan W. Klimek P.E., Director
O C Division of Water Quality
Wilmington Regional Office
July 12, 2002
Mr. Norman Sneeden
PO Box 1509
Wrightsville Beach, NC 28480
Subject: REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 000824
Hermitage Park Warehouse (4000 Blue Clay Road)
New Hanover County
Dear Mr. Sneeden:
The Wilmington Regional Office received a modification to the Stormwater Management
Permit Application for Hermitage Park Warehouse on May 6, 2002. A preliminary review of
that information has determined that the application is not complete. The following information
is needed to continue the stormwater review:
1. Please either delineate all wetlands on site, disturbed or undisturbed, or note on
the plans that none exist.
2. Since this plan will replace the previously approved plan, please show all spot
elevations, grading and dimensions for the existing areas.
3. Please provide the engineer's certification for the pond. Since the orifice is
proposed to change from 1.25" to 2", please note this as an exception and submit
another certification upon completion of the project.
4. Please delineate the 8.3 acre drainage area to the pond.
i
ZA
NCDENR
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington,N.C.28405 [phone] Fax[phone]D4 Customer Service
800-623-7748

A
Mr. Sneeden
July 12, 2002
Stormwater Project No. SW8 000824
---------------------------------------------------
Please note that this request for additional information is in response to a preliminary
review. The requested information should be received by this Office prior to August 12, 2002,
or the application will be returned as incomplete. The return of a project will necessitate
resubmittal of all required items, including the application fee.
If you need additional time to submit the information, please mail or fax your request for
a time extension to the Division at the address and fax number at the bottom of this letter. The
request must indicate the date by which you expect to submit the required information. The
Division is allowed 90 days from the receipt of a completed application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under an
approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and is subject
to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any original
documents that need to be revised have been sent to the engineer or agent. All original
documents must be returned or new originals must be provided. Copies are not acceptable. If
you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\2002\000824.JUL
cc: Linda Lewis
Charles Cazier, Tripp Engineering

State of North Carolina
A. Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor William G. Ross Jr., Secretary
FAX COVER SHEET
Swd C X) ?2 ¢
Date: -I Z-UZ No. Of Pages: 3
To: Ch 2rli e C2zi er From: Lida L cu -5
CO: Tripp enMineertn�. CO:
FAX #: r 5- 6(o31 FAX#: [phone]
REMARKS:
127 Cardinal Drive Extension,Wilmington,N.C.28405-3835 Telephone[phone] Fax[phone]
An Equal Opportunity Affirmative Action Employer

P. 1
* * COMMUNICATION RESULT REPORT ( JUL. 12.2002 2:32PM )
TTI NCDENR WIRO
FILE MODE OPTION ADDRESS (GROUP) RESULT PAGE
----------------------------------------------------------------------------------------------------
786 MEMORY TX 97635631 OK P. 3/3
----------------------- -------- ------------------------------------------
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL E-2) BUSY
E-3) NO ANSWER E-4) NO FACSIMILE CONNECTION
State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor William G.Ross Jr.,Secretary
,
FAX COVER SHEET 5(�� cx;o 8Z ¢'
Date: �1��2-02 No. Of Pages:
To: Charti2 C2 Xe&i
From:
CO: TC`I` Jgi nP2rrn - CO:
FAX#'. �I(D3-5r�31 FAX#: 10- 50-2004
REMARKS:
127 Cardinal Drive Extension,Wilmington,N.C.29405.3845 Telephone[phone] Fat(910)350-1004
An Equoi opportunity Affirmative Action Employer

TRII'P ENGINEERING, P.C.
0 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] FAX: [phone]
RECEIVED
May 3, 2002 MAY 20047n2
NCDENR BY: P
Division Water Quality �('
127 Cardinal Drive
Wilmington, NC 28405-3845 U
Attn: Ms. Linda Lewis Lw� OG
Re: Hermitage Park Warehouse Expantion JV
New Hanover County, NC
TE 02034
Dear Linda:
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form with narrative, one (1) wet detention basin supplement, two
(2) sets of calculations and one check for the application fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
Charles D. Cazier, E.I.
CDC:dcb
Enc.

May 3, 2002 TE 02034
Stormwater Narrative
Hermitage Park Warehouse Expansion
New Hanover County, NC
Hermitage Park is an old farming site of 13.7 acres. The tract is zoned industrial. Two
structures currently exist on site, one office building and one warehouse along with gravel
parking and access. The existing impervious area is 1.51 acres. This specialty wood
supplier is slowly reaching full capacity in his existing warehouse. A proposed expansion
of 40,000 sf building and 26,266 sf of gravel access brings the total impervious area to
131,896 sf.
The existing Stormwater pond is sized to treat both the existing and proposed impervious
areas. Outflow will discharge through existing ditches to an unknown tributary to Prince
George Creek, classification C-SW.