SW8000243_HISTORICAL FILE_20020226

STORMWATER DIVISION CODING SHEET
POST —CONSTRUCTION PERMITS
PERMIT NO.
SW8 00 c0—Li
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
� HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2002022�-o
YYYYMMDD

A TF�
7
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Ladd S. Nelson. President
Ladd Exterior Wall Systems, Inc.
3220 Corporate Drive
Wilmington, NC 28405
Dear Mr. Nelson:
Jiic�ae; F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Wilmington Regional Office
February 26, 2002
Subject: Permit No. SW8 000243 Modification
Ladd Exterior Wall Systems, Inc.
Low Density Stormwater Project
New Hanover County
The Wilmington Regional Office received a complete Stormwater Management Permit Application for Ladd
Exterior Wall Systems, Inc. on February 26, 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 PermitNo. SW8 000243 Modification dated February 26, 2002, for the construction of Ladd Exterior
Wall Systems, Inc..
This permit shall be effective from the date of issuance until rescinded and shall be subject to the conditions and
limitations as specified therein, and does not supercede any other agency permit that may be required.
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 2761 I-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact either Hal Lee or
me at [phone].
Sincerely,
Rick Shiver
Water Quality Regional Supervisor
RSS/:hwl - S:\WQS\STORMWAT\PERMIT\000243M.FEB
cc: Mr. Phil Tripp, P.E.
Tony Roberts, New Hanover County Inspections
Hal Lee, P.E.
Beth E. Wetherill. New Hanover County Engineering
Wilmington Regional Office
Central Files
N.C. Division of Water Quality 127 Cardinal Drive Extension
�"
NN OENit
Wilmington. N.C. 28405 [phone] Fax [phone] Customer service
800-623-7748

State Stormwater Management Systems
Permit No. SW8 000243 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORM -WATER MANAGEMENT PERMIT
LOW DENSITY DEVELOPMENT
In accordance with the provisions'bf Article 21 of Chapter 143, General Statutes of North Carolina as amended, and
other applicable Laws, Rules and Regulations
PERMISSION IS HEREBY GRANTED TO
Ladd Exterior Wall Systems, Inc.
Ladd Exterior Wall Systems
New Hanover County
FOR THE
construction, operation and maintenance of a 30% low density development in compliance with the provisions of
15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules ") and the approved stormwater management
plans and specifications, and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit for Ladd Exterior Wall Systems, Inc..
The Permit shall be effective from the date of issuance until rescinded and shall be subject to the following specific
conditions and limitations:
I. DESIGN STANDARDS
1, This permit covers the construction of 58,803 square feet of built -upon area.
2. The overall tract built -upon area percentage for the project must be maintained at 30%, as required by
Section .1005 of the stormwater rules.
Approved plans and specifications for projects covered by this permit are incorporated by reference and are
enforceable parts of the permit.
4. This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan
must be maintained at a minimum of 100' long with 5:1 (H:V) side slopes or flatter, have a longitudinal
slope no steeper than 5%, carry the flow from a 10 year storm in a non -erosive manner, and maintain a dense
vegetated cover.
No piping is allowed except:
a. That minimum amount necessary to direct runoff beneath an impervious surface such as a road.
b. That minimum amount needed under driveways to provide access.

State Stormwater Management Systems
Permit No. SW8 000243 Modification
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
LOW 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
Ladd Exterior Wall Systems, Inc.
Ladd Exterior Wall Systems
New Hanover County
FOR THE
construction, operation and maintenance of a 30% low density development in compliance with the provisions of
15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules ") and the approved stormwater management
plans and specifications, and other supporting data as attached and on file with and approved by the Division of
Water Quality and considered a part of this permit for Ladd Exterior Wall Systems, Inc..
The Permit shall be effective from the date of issuance until rescinded and shall be subject to the following specific
conditions and limitations:
I. DESIGN STANDARDS
1. This permit covers the construction of 58,803 square feet of built -upon area.
The overall tract built -upon area percentage for the project must be maintained at 30%, as required by
Section .1005 of the stormwater rules.
Approved plans and specifications for projects covered by this permit are incorporated by reference and are
enforceable parts of the permit.
This project proposes a curb outlet system. Each designated curb outlet swale shown on the approved plan
must be maintained at a minimum of 100' long with 5:1 (H:V) side slopes or flatter, have a longitudinal
slope no steeper than 5%, carry the flow from a 10 year storm in a non -erosive manner, and maintain a dense
vegetated cover.
5. No piping is allowed except:
a. That minimum amount necessary to direct runoff beneath an impervious surface such as a road.
b. That minimum amount needed under driveways to provide access.

State Stormwater Management Systems
Permit No. SW8 000243 Modification
6. Unless specified elsewhere, permanent seeding requirements for the swales must follow the guidelines
established in the North Carolina Erosion and Sediment Control Planning and Design Manual
II. SCHEDULE OF COMPLIANCE
Projects covered by this permit will maintain a minimum 30 foot wide vegetative buffer between all
impervious areas and surface waters.
2. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
3. The Director may notify the permittee when the permitted site does not meet one or more of the minimum
requirements of the permit. Within the time frame specified in the notice, the permittee shall submit a written
time schedule to the Director for modifying the site to meet minimum requirements. The permittee shall
provide copies of revised plans and certification in writing to the Director that the changes have been made.
4. Prior to the sale of this project, in whole or in part, the following deed restrictions must be recorded with
the Office of the Register of Deeds and submitted to DWQ:
a. "Construction of additional built -upon area in excess of 58,803 square feet will require a permit
modification."
b. "Construction of additional impervious areas such that low density requirements are no longer met
must be submitted to DWQ and a permit modification must be issued prior to construction. An
engineered system will be required to collect and treat the runoff from all built -upon area associated
with the project, including that area permitted under the low density option."
"Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with this
development, except for average driveway crossings, is strictly prohibited by any persons."
d. "Filling in, piping or altering any designated 5:1 curb outlet swale associated with the development
is prohibited by any persons."
A copy of the recorded restrictions must be received by this Office within 30 days of the date of sale.
6. Filling in or piping of any vegetative conveyances (ditches, swales, etc.) associated with the permitted
development, except for average driveway crossings, is strictly prohibited by any persons.
Projects within CAMA's Area of Environmental Concern (AEC) are subject to a reduction of the permitted
amount of built -upon area due to CAMA jurisdiction within the AEC.
8. 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 the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. 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 was sought.
f. Filling in, altering or piping any vegetative conveyance shown on the approved plan.
The Director may determine that other revisions to the project should require a modification to the permit

State Stormwater Management Systems
Permit No. SW8 000243 Modification
10. Swales and other vegetated conveyances shall be constructed in their entirety, vegetated, and be operational
for their intended use prior to the construction of any built -upon surface.
II. Vegetated runoff conveyances not used as curb outlet swales must have sideslopes of 3:1 or flatter.
12. During construction, erosion shall be kept to a minimum and any eroded areas of the swales or other
vegetated conveyances will be repaired immediately.
13. The permittee shall at all times provide the operation and maintenance necessary to operate the permitted
stormwater management systems at optimum efficiency to include:
a. Inspections
b Sediment removal.
C. Mowing, and revegetating of the side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
14. Within 30 days of completion of the project, the permittee shall certify in writing that the project has been
constructed in accordance with the approved plans.
15. The permittee shall submit all information requested by the Director or his representative within the time
frame specified in the written information request.
III. GENERAL CONDITIONS
Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an
enforcement action by the Division of Water Quality, in accordance with North Carolina General Statutes
143-215.6A to 143-215.6C.
2. The permit issued shall continue in force and effect until revoked or terminated.
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.
4. The issuance of this permit does not prohibit the Director from reopening and modifying the permit,
revoking and reissuing the permit, or terminating the permit as allowed by the laws, rules, and regulations
contained in Title 15A of the North Carolina Administrative Code, Subchapter 2H.1000; and North Carolina
General Statute 143-215.1 et. al.
5. The permit is not transferable to any person except after notice to and approval by the Director. The Director
may require modification or revocation and reissuance of the permit to change the name and incorporate
such other requirements as may be necessary. A formal permit request must be submitted to the Division
of Water Quality accompanied by the appropriate fee, documentation from both 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.
6. The permittee grants permission to DENR Staff to enter the property for the purpose of inspecting all
components of the stormwater management facility.
7. The permittee shall notify the Division of any name, ownership or mailing address changes within 30 days

State Stormwater Management Systems
Permit No. SW8 000243 Modification
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.
Permit issued this the 26th day of February, 2002
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
C_ - -- ----------
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 000243 Modification

Olo4M
Lo st
Date Received Fee Paid Permit Number `
:54 OooZ43 sA,d-
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be pholoeopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Ladd Exterior Wall Svstems
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Ladd S. Nelson President
3. Mailing Address for person listed in item 2 above:
3220 Corporate Drive
City: Wilmington State: NC Zip: 28405
Telephone Number: 910-794-4600
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Ladd Exterior Wall Svstems Inc.
5. Location of Project (street address):
Lot 32R Northchase Park of Commerce, Corporate Drive
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From Wilmington proceed north on Hwy 132, Turn Right on Northchase Parkway SE, then Left on
Corporate Drive. Project is fourth parcel on the right.
7. Latitude : N 340 19' 00" Longitude: W 770 52' 00" of project
� 9 - Ig •31I 1 1.52 14
8. Contact person who can answer questions about the project:
Name: Charles Cazier Telephone Number: 910-763-5100
It. 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 SW8 000243 and its issue date (if known) May 5, 2000
3. Specify the type of project (check one):
X Low Density _ 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.
❑l. 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.
5: l swales 100 if minimum and sheet flow over sodded yard
2. Stormwater runoff from this project drains to the
Cape Fear
River basin.
3. Total Project Area: 5.72 acres
4. Project Built Upon Area:
23.6 %.
5. How many drainage basins does the project have? I
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.
-------
Itm3pettiioms i 5utfa A# r DrArn3gA B3mn:1 IiYatnit Basing;.
:.....
On -site Buildings 20,800 sf
On -site Streets
On -site Parking 34,128 sf
On -site Sidewalks 3,875 sf
Other on -site
Off -site
Total 1 E=58.803 sf E=
* Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

7. How was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a
table listing each lot number, size and the allowable built -upon area for each lot must be provided as an
attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit
number as issued by the Division rf Water duality. 7heae covenants may
not be changed or deleted without the consent of the State.
2. No more than 74,749 sf(30%) square feet ofany lot shall be covered by structures ofimpervious materials.
Impervious materials include asphalt, gravel, concrete, brief stone, slate or similar material but do not include wood
decla'ng or the water surface ofswimming pools.
3. Shales shall not be filled in, piped or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess ofthe permitted amount requires a state stormwater management permit modocation prior
to construction.
5. All permitted runofffrom outparcels or future development shall he directed into the permitted stormwater control
system These connections to the stormwater control system shall be performed in a manner that maintains the
integrity andperformance 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
Form SWU-103
Form SWU-104
Form SWU-105
Form SWU-106
Form SWU-107
Form SWU-108
Form SWU-109
Wet Detention Basin Supplement
Infiltration Basin Supplement
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Underground Infiltration Trench Supplement
Neuse River Basin Supplement
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

16
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
e�bc
• One copy of the applicable Supplement Form(s) for each BMP
lcye
• Permit application processing fee of $420 (payable to NCDENR)
4�47G
• Detailed narrative description of stormwater treatment/management
we_
• Two copies of plans and specifications, including:
C-DL
- 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 stornwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sires,
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]
VIII. APPLICANT'S CERTIFICATION
Fax: [phone]
1, (print or type name ofperson listed in General Information, item 2) Ladd S. Nelson
certify that the information included on this permit application form is, to the best of my knowledge; correct and
that the project will be constructed in conformance with the approved plans, that the required deed restrictions
and protective covenants will be recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000.
Signature: �ro-�-9 1 t! -Q� Date:
Form SWU-101 Version 3.99 Page 4 of 4

Permit No.
(to be provided by DTYQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORM -WATER MANAGEMENT PERMIT APPLICATION FORM
LOW DENSITY SUPPLEMENT
This form may be photocopied for use as an original
A low density project is one that meets the appropriate criteria for built upon area and transports stormwater
runoff primarily through vegetated conveyances. Low density projects should not have a discrete stormwater
collection system as defined by 15A NCAC 2H .1002(18). Low density requirements and density factors can
be found in 15A NCAC2H .1005 through .1007.
I. PROJECT INFORMATION (please complete the following information):
Project Name: Ladd Exterior Wall Systems
Contact Person: Charles Cazier Phone Number: 910 763-5100
Number of Lots: 1 Allowable Built Upon Area Per Lot*: 74.748 sf
* If lot sizes are not uniform, attach a table indicating the number of lots, lot sizes and allowable built upon
area for each lot. The attachment must include the project name, phase, page numbers and provide area
subtotals and totals.
H. BUILT UPON AREA
See the Stormwater Management Permit Application for specific language that must be recorded in the deed
restrictions for all subdivisions.
For uniform lot sizes, complete the following calculation in the space provided below where:
• SA Site Area — the total project area above Mean High Water. Wetlands may be excluded when the
development results in high density pockets.
• DF Density Factor — the appropriate percent built upon area divided by 100.
• RA Road Area — the total impervious surface occupied by roadways.
• OA Other Area — the total area of impervious surfaces such as clubhouses, tennis courts, sidewalks, etc.
• No. Lots — the total number of lots in the subdivision.
• BUA/Lot — the computed allowable built upon area for each lot including driveways and impervious
surfaces located between the front line and the edge of pavement.
Form SWU-104 Rev 3.99 Page 1 of I

Calculation:
(SA x DF)- RA- OA = BUA
No. Lots Lot
(5.72 ac x 43,560 sf/ac ) x 0.30 = 74,748.98
1
III. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate that the following requirements have been met and supporting
documentation is provided as necessary. if the applicant has designated an agent in the Stormwater
Management Permit Application Form, the agent may initial below.
Applicants Initials
ILL
GpL
a. A 30 foot vegetative buffer is provided adjacent to surface waters. Projects in the Neuse
River basin may require additional buffers.
b. Deed restriction language as required on form SWU-101 shall be recorded as a restrictive
covenant. A copy of the recorded document shall be provided to DWQ within 30 days of
platting and prior to sale of any lots.
6vL- c. Built upon area calculations are provided for the overall project and all lots.
/DL d. Project conforms to low density requirements within the ORW AEC (if applicable).
[15A NCAC 2H .1007(2)(b)]
Form SWU-104 Rev 3.99 Page 2 of 2

Permit No. SW8 0002N3
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
CURB OUTLET SYSTEM SUPPLEMENT
FOR LOW DENSITY DEVELOPMENT WITH CURB AND GUrrER
This form may be photocopied jar use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes a stormwater management permit application, a
curb outlet system supplement, a low density supplement, design calculations, and plans and specifications
showing all stormwater conveyances and curb outlet details.
I. PROJECT INFORMATION
Project Name: Ladd Exterior Wall Systems
Contact Person: Tripp Engineering, P.C. ( Charlie ) Phone Number: 910 763-5100
Curb outlets to (check one): X Swale 0 Vegetated Area
H. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the North Carolina Administrative Code Section
15A NCAC 2H .1008.
Initial in the space provided to indicate that the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent on the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
/'D/ a. Curb outlets direct flow to a swale or vegetated area.
Cn__ b. Swales or vegetated areas receiving curb outlet flow are designed to carry, at a minimum,
the peak flow from the 10-year storm.
GDC- c. Flow velocity is non -erosive for peak flow from the 10-year storm event.
Lp[ d. Longitudinal slope of the swale or vegetated area does not exceed 5%.
4coQ[ e. Side slopes of the swale or vegetated area are no steeper than 5:1 (horizontal to vertical).
Cd[ f Length of Swale or vegetated area is > 100 feet.
exx g. The system takes into account the run-off at ultimate built -out potential from all surfaces
draining to the system (delineate drainage area for each Swale).
=4 h. Swales are located in recorded drainage easements.
�bL i. Grass type(s) for permanent vegetative cover specified on detail.
j. Swale detail provided on plans.
Form SWU-105 Ver 3.99 Page I of 3

III: DESIGN INFORMATION
Complete the following table. If additional space is needed, the information should be provided in the same
format as Table I and attached to this form. Rainfall intensity data can be found in Appendix 8.03 of the State
of North Carolina Erosion and Sediment Control Planning and Design Manual.
Table 1. Swale Design Information
Swale No.
Drainage
Area (ac)
Impervious
Area (ac)
Grassed
Area (ac)
C
Q
(cfs)
V :diow
(fps)
V actual
(fps)
Flow
Depth (ft)
1
1.06
0.30
0.76
0.45
3.01
3.5
2.05
0.54
2
0.96
0.27
0.69
0.45
2.72
3.5
2.54
0.43
3
0.50
0.145
0.355
0.45
1.42
3.5
1.85
0.39
4
0.50
0.145
0.355
0.45
1.42
3.5
1.85
0.39
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Form SWU-105 Ver 3.99 Page 2 of 3

IV. CURB OUTLET SYSTEM MAINTENANCE REQUIREMENTS
1. Mowing will be accomplished as needed according to the season. Grass height will not exceed six inches at
any time.
2. Swales will be inspected monthly or after every runoff producing rainfall event for sediment build-up,
erosion, and trash accumulation.
3. Accumulated sediment and trash will be removed as necessary. Swales will be reseeded or sodded
following sediment removal.
4. Eroded areas of the swales will be repaired and reseeded. Swales will be revegetated as needed and in a
timely manner based on the monthly inspections.
5. Catch basins, curb cuts, velocity reduction devices, and piping will be inspected monthly or after every
significant runoff producing rainfall event. Trash and debris will be cleared away from grates, curb cuts,
velocity reduction devices and piping.
6. Swales may not be altered, piped, or filled in without approval from NCDENR Division of Water Quality.
I acknowledge and agree by my signature below that I am responsible for the performance of the six
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print Name and Title: Ladd S. Nelson, President
Address: 3220 Corporate Drive, Wilmington, NC 28405
Phone: [phone] Date:
Signature: aAg� ,I LQcp,_�
!Vote: The legally responsible party should not be a homeowners association unless more than 50% of the lots have been sold and a
resident of the subdivision has been named the president.
1, D014- Ll q i-y-d a Notary Public for the State of North Carolina County of
TPn der , do hereby certify that Ladd S. Nelson personally appeared before me this
zj day of December - 2001 and acknowledge the due execution of the forgoing infiltration basin
maintenance req�ments. Witness my hand and official seal,
Mvconunissionexpires Ib-1S-O(e
Form SWU-105 Ver 3.99 Page 3 of 3

Date: p�•22-0Z_
� t6 2 5 2002
Ft8 2 5 2002 TRIPP ENGINEERING, P.C.
419 Chestnut Street
— Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
I L'EnTTER OF TRANSMITTAL
To: '`TWA -
Attention: Al-, L
Subject: AM E�kTmm .&L S(61aS
FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER
I am sending you: ( ) ATTACHED ( ) UNDER SEPARATE COVER
( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( ) Other
These are transmitted as checked below:
( ) For Approval ( ) For Your Use ( ) Sign & Return ( ) Review
cc:
l W*
Signed: C&IzIL% St). CAZlER-

12/12/01 Ladd Exterior Wall Systems
cdc Swale Calculations
Swale Calculations
Runoff C = 0.45
Intensity Ito = 6.3 in/hr
5 :1 swates
RH = j(5)(D) / 2(sgrt(25+1)1
= 0.49D
A = (5D)(D)
= 5DZ
Q = (1.49/n)(A)(RH)'(S)1n
Q= (1.49/n)(5D2)(0.49d)u(S)'rz
D' = I(Q)(n/1.49)] / ((5)(.49)2'3(S)'rz1
Southeast Swale
Drainage Area =
1.06 acres
Q = CIA
=
3.01 cfs
swale length =
110 ft.
difference in height =
1.1 ft.
Slope (S) =
0.0100
n =
0.03
Dom' = 0.19
D = 0.54 ft.
Val. = 2.05 fps
Norteast Swale
Drainage Area =
0.50 acres
Q = CIA
=
1.42 cfs
swale length =
160 ft.
difference in height =
2 ft.
Slope (S) =
0.0125
n =
0.03
Dar = 0.08
D = 0.39 ft.
Val. = 1.85 fps
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swales5
c
11_ D
5
5D
Southwest Swale
Drainage Area =
0.96 acres
Q = CIA
=
2.72 cfs
swale length =
120 ft.
difference in height =
3.34 ft.
Slope (S) = 0.0278
n =
0.03
Dom' = 0.11
D = 0.43 ft.
Vel. = 2.94 fps
Northwest Swale
Drainage Area =
0.50 acres
Q = CIA
=
1.42 cfs
Swale length =
160 ft.
difference in height =
2 ft.
Slope (S) = 0.0125
n =
0.03
Dw = 0.08
D = 0.39 ft.
Val. = 1.85 fps
4 � O
1of1 l.'ZZ47,

12/12/01
cdc
Ladd Exterior Wall Systems
Swale Calculanons
Swale Calculations
Runoff C = 0.45
Intensity 110 = 6.3 in/hr
5 :1 swales
RH = ((5)(D) / 2(sgrt(25+1)1
0.490
A = (5D)(D)
= 5D2
Q = (1.49/n)(A)(RH)'(S)"
Q = (1.49/n)(5D2)(0.49d)'(S)12
D8" = 1(Q)(nll.49)1 / I(5)(.49)'(S)"I
Southeast Swale
Drainage Area =
1.06 acres
Q = CIA
=
3.01 cfs
swale length =
110 ft.
difference in height =
1.1 ft.
Slope (S) =
0.0100
n =
0.03
Dw = 0.19
D = 0.54 ft.
Vel. = 2.05 fps
Norteast Swale
Drainage Area =
0.50 acres
Q = CIA
=
1.42 cfs
swale length =
160 ft,
difference in height =
2 ft.
Slope (S) =
0.0125
n =
0.03
Da = 0.08
D = 0.39 ft.
Vel. = 1.85 fps
CARol/
q SEAL 9:
17374 i a
�``•cNGiN��Q�Q
GREW . �\�N
v
1� D
5
5D
Southwest Swale
Drainage Area =
0.96 acres
Q = CIA
=
2.72 cfs
swale length =
120 ft.
difference in height =
3.34 ft.
Slope (S) = 0.0278
n =
0.03
D = 0.11
D = 0.43 ft.
Vel. = 2.94 fps
Northwest Swale
Drainage Area =
0.50 acres
Q = CIA
=
1.42 cfs
swale length =
160 ft.
difference in height =
2 ft.
Slope (S) = 0.0125
n =
0.03
Dw = 0.08
D = 0.39 ft.
Vel. = 1.85 fps
Z• ZZoz
5wale55 1 of 1

TRwp ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
December 28, 2001
NCDENR
Division Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Ms. Linda Lewis
Re: Ladd Exterior Wall Systems
SW8 000243
New Hanover County, NC
TE 01099
Dear Linda:
JAN 0 2 2002
Enclosed please find two (2) sets of plans, one (1) signed original and one (1)
copy of the application form, one (1) curb outlet system supplement, one (1) low density
supplement and one check for the application fee. We are applying for a modification to
existing permit No. SW8 000243 issued May 5, 2000.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
Jacqueline Kin
W.04IA7
Enc.