SW8061105_HISTORICAL FILE_20061130

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 0a1\ 05
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
® HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20 Ulo �\3y
YYYYMMDD

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
November 30, 2006
Harold Layne, Member Manager
Monroe Holdings, LLC
PO Box 216
Carolina Beach, NC 28428
Subject: Stormwater Permit No. SW8 061105
Lot 7 Landmark Industrial Park
High Density Project
New Hanover County
Dear Mr. Layne:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Lot 7 Landmark Industrial Park on November 1, 2006. 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 061105 dated November 30, 2006, for the construction of the subject project.
This permit shall be effective from the date of issuance until November 30, 2016, 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 sixty (60) 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 Chris Baker, or me at [phone].
Sincere ,
EdA eck
Regional Supervisor
Surface Water Protection Section
ENB/csb: S:\WOS\STORMWATER\PERMIT\061105.hov06
cc: Phil Tripp, Tripp Engineering, P.C.
New Hanover County Building Inspections
City of Wilmington Stormwater Services
New Hanover County Engineering
Chris Baker
Wilmington Regional Office We
Central Files No hCarolina
Wura!/y
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet wM-w.neweterauality or¢ Location: 512 N. Salisbury St. Raleigh, NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled110% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 061105
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
Harold Layne and Monroe Holdings, LLC
Lot 7 Landmark Industrial Park
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 November 30, 2016, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
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 40,761 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.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 061105
6. The following design criteria have been provided in the wet detention pond and
must be maintained at design condition:
a. Drainage Area, acres:
Onsite, ft : .
Offsite, ft2:
b. Total Impervious Surfaces, ft2:
C. Design Storm, inches:
d. Pond Depth, feet:
e. TSS removal efficiency:
f. Permanent Pool Elevation, FMSL:
g. Permanent Pool Surface Area, ft2:
h. Permitted Storage Volume, ft3:
i. Temporary Storage Elevation, FMSL:
j. Controlling Orifice:
k. Permitted Forebay Volume, ft3:
I. Receiving Stream/River Basin:
M. Stream Index Number:
n. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
1.4
60,984
N/A
40,761
1
6
90%
24.5
2,550
7,665
26.5
0.75" 0 pipe
1,397
UT to the Cape Fear / Cape Fear
18(63)
"C-Sw"
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 061105
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 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 061105
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 30th day of November, 2006.
NORTH ,Q�OLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

4
State Stormwater Management Systems
Permit No. SW8 061105
Lot 7 Landmark Industrial Park
Stormwater Permit No. SW8 061105
New Hanover County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
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 061105
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: NCDENR-DWQ Regional Office
New Hanover County Building Inspections
Page 7 of 7

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
1. GENERAL INFORMATION
I . Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Monroe Holdings, LLC
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Harold Layne, Member Manager
3. Mailing Address for person listed in item 2 above:
City: Carolina Beach State: NC Zip: 28428
Telephone Number: 910-262-0460
4. Project Name (subdivision, facility, or establishment name — should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Lot 7 Landmark Industrial Park
5. Location of Project (street address):
Landmark Drive
City: Wilmington County: New Hanover
6. Directions to project (from nearest major intersection):
From the intersection of US Hwy 421 and Ralei h Street travel -Approximately % mile west on Raleigh St.
Turn south on Landmark Drive proiect is
7. Latitude : N 340 12' 00" Longitude: W 770 56' 00" of project
8. Contact person who can answer questions about the project:
Name: Phillip Tripp Telephone Number: 910-763-5100
Il. PERMIT INFORMATION:
I . Specify whether project is (check one): X New Renewal Modification
Form SWU-101 Version 3.99 Page] of4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list
The existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 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.
on -site wet detention pond
2. Stormwater runoff from this project drains to the Cape Fear River basin.
3. 'total Project Area: 1.4 acres
5. I -low many drainage basins does the project have? 1
4. Project Built Upon Area: 66.8 %.
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin Information
Drainage Basin 1
Drainage Basin 2
Receiving Stream Name
Unnamed trib to Cape Fear River
Receiving Stream Class
C-SW
Drainage Basin Area
1.40 ac
Existing Impervious * Area
-
Proposed Impervious * Area
0.94 ac
% Impervious* Area (total)
66.8%
Impervious;* Surface Area
Drainage Basin l
Drainage Basin 2
On -site Buildings
17,400 sf
On -site Streets
-
On -site Parking
21,804 sf
On -site Sidewalks
1,557 sf
Other on -site
-
Off -site
Total:
E=40,761 sf
E_
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking
areas sidewalks, gravel areas, etc.
FormSWU-101 Version3.99 Page 2of4

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.
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 inay
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 of swimming pools.
3. Swales shall not be filled in, piped or altered except as necessary to provide driveway crossings.
4. Built-up077 area in excess of the permitted amount requires a state stornwater management permit indication prior
to construction.
5. Allperntilledrunofffroin ouloarcels orfidure development shall he directed into thepermitledsiormwalcr control
system. These connections to the stormvater 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
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
FormSWU-101 Version3.99 Page 3of4

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 L
• Permit application processing fee of $420 (payable to NCDENR) Z�2[
• Detailed narrative description of stormwater treatment/managementL
• Two copies of plans and specifications, including: �L
- 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 Engineerin¢, P.C.
Mailing Address: 419 Chestnut Street
City: Wilmington State: NC Zip: 28401
Phone: [phone] Fax: [phone]
VIII. APPLICANT'S CERTIFICATION
I, (print or type name ofperson listed in General Information, item 2) Harold Layne
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 co nant I e recorded, and that the proposed project complies with the requirements of 15A
NCAC 2H .1090� O —
Date:
Form S WU-101 Version 3.99 Page 4 of 4

TRIPP ENGINEERING, P.C.
419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
November 1, 2006
NCDENR
Division Water Quality
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Cameron Weaver
Re: Lot 7 Landmark Industrial Park —EXPRESS REVIEW
New Hanover County, NC
TE 05200
Dear Cameron:
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 express review fee.
Please review for approval and contact us with any questions or comments.
Thank you.
Sincerely,
Tripp Engineering, P.C.
C/"C
Charles D. Cazier, E.I.
CDD:dcb
Enc.
Sw8o61105

.,
09/27/06
Stormwater Narrative
Lot 7 Landmark Industrial Park
New Hanover County, NC
TE05200
Lot 7 is an existing vacant tract within an industrial subdivision. This site is 1.40 ac and
drains to an unknown tributary of the Cape Fear River. Runoff from a proposed
commercial building of 17,400 sf, asphalt parking of 21,804 sf, and concrete sidewalk of
1,557 sf will be treated by an on -site wet detention pond. The pond is designed to meet
the State's first V and the City of Wilmington's 10-year pre -post runoff requirements.
Outflow is routed to the Cape Fear River, classification C-SW.

MSr006 Lot 7 Lanmark Industrial Park 05200
CDC' Pond Calculations
Total Drainage Area
s . ft. I acres
60,984 1 1.40
Im ervious Area
Land Use
s . ft.
acres
buildings
17,400
0.40
parking/asphalt
21,804
0.50
sidewalks
1,557
0.04
Total
40,761
0.94
Stormwater Calculations:
Time of Concentration
Hydraulic Length (L) = 368 ft.
change in Height (H) = 6 ft.
Tc = (L'/H)4m/128
= 360 min.
Flow for 2 year, 6 hour Storm (02)
CPRE _ (CPRE) x (h°) x (Area)
1.49 cfs
CPosr = (Crow) x O10) x (Area)
4.28 cfs
Sail Stora a Capacity for 2 year Storm:
CN= (98)(% imp.) + (60)(1 -% imp.)
= 86
P = 3.30 in. for2yr, 6 hr storm
S = 1000/CN - 10
= 1.63
Depth (D)= [P-(0.2)(S)]2 / [P+(0.8)(S))
1.92 in.
Time to Peak Flow:
TP= j(43.5)(D)(Area)]/O2,POST
27.33 min.
Detention Pond Design:
Pond Size:
Elevation
R.
Surface Area
s .ft.
Normal Pool
24.50
2,550
Flood Pool
26.50
4,588
Top of Bank
28.50
6,626
Bottom of Pool
18.50
5
Provided Storage Volume:
Vol. _ [(Normal pool SA+ Flood Pool SA) / 21
x (F.P. elev. - N.P. elev.)
impervious = 0.668
= 66.8%
say 67.0%
CPRE= 0.25
CPosr= (%imp.)(.95)+(1 %imp.)(.25)
= 0.72
12 = 4.25 in/hr
6 4.92 m/hr
Flow for 10 year, 6 hour Storm (Or0)
CPRE _ (CPRE) x (121) x (Area)
1.72 cfs
OPosr = (CPosr) x (125) x (Area)
4.96 cfs
CN = (98)(% imp.) + (60)(1-%imp.)
86
P = 4.82 in. for 10 yr, 6 hr storm
S = 1000/CN - 10
1.63
Depth (D)= [P-(0.2)(S)]2/[P+(0.8)(S)]
- 3.30 in.
Time to Peak Flow:
TP= ((43.5)(D)(Area)]/Oigvosr
40.52 min.
(Chart for 90% TSS Removal for Wet Detention
Pond without Veaetative Filter)
State Volume Required for
7,138 cu.ft.
.%`�N CAR
�!
'ram
t4 Y
SEAL
a 17374 a
4
�R111111101,
EGC�
Rv= .05+.009(%imp)
= 0,65155
V= (Design rainfall)(Rv)(Drainage Area)
= 3.311 cu. ft.
�z:5'0b
05200pond 1 of 2

9252006 Lot 7 Lanmark Industrial Park
CDC Pond Calculations
Pond Volume:
Bottom SA = 5 sq. ft.
Normal Pool SA = 2,550 sq. ft.
Vol. _ [(N.P. SA + Bottom SA) / 21 x (N.P. el. - Bottom el.)
7,665 cu. ft.
Form
Required Volume
Vol. = 20% of storage volume
1,533 cu, ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1st 1" of stormwater,
Q = Required Vol. / 172,800 sec. (2-days)
0.019 cfs
Required Area of Pipe for 2-day drawdown:
A= Q/[Cdx SQRT(2xgxh)]
Cd = 0.6
g = 32.2 ft./s"
h = (F.P. elev: N.P. eiev.) /2
A = 0.0040 sq. ft.
Diameter of Pipe for 2-dav drawdown
DIA. = SQRT[(A x 4) / pi]
= 0.0712 ft.
0.85 in.
"Use: 0.75 in diameter pipe
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 16 ft.
Q = CIA
C= (%imp.)(.95)+(1-%imp)(25)
0.72
1 = 4.92 in. for a 25 yr. Storm
A = 1.40 Acres
4.96 cfs
Q= Cwx Lx H'
H = [0 / (Cw x L)]v0
Cw = 3
0.22 ft.
Peak elevation = Flood pool elevation + H
26.72 ft.
Provided Volume
Bottom SA = 268 sq. ft.
Normal Pool SA = 663 sq. ft.
Vol. _ [(N.P. SA + Bottom SA) / 21 x (N.P. el. - Bottom el.)
1,397 cu. ft.
Flow for 5-day drawdown:
for 1st 1" of stormwater,
Q = Required Vol. / 432,000 sec. (5-days)
0.008 cfs
Required Area of Pipe for 5-day drawdown:
A= 0/[Cdx SQRT(2xgxh)]
Cd = 0.6
g = 32.2 Us'
h = (F.P. elev. - N.P. elev.) / 2
1 ft.
A = 0.0016 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT((A x 4) / pi]
0,0450 ft.
0.54 in.
05200
05200pcnd 2 of2

MAY 11' 006 10:05A Tripp Engineering 9107635631 5w p 6b, 10S
page 2
INFILTRATION SITE VISIT REQUEST
Name of the Project: <�> Lot 7 Landmark Industrial Park
Location (attach a clear vicinity map): Landmark Drive
Street address, SR number, community, are.
Directions from the nearest major intersection: From the intersection of US Hwy 421 and Ralcieh
Street, lrayel approximately'/. mile west on Raleigh St. Turn south on Landmark Drive.
Owner/Applicant Name: Monroe Holdings LLC
Consultant Name: Tripp Engineering P C.
Consultant Contact Information: 763-5100 fax [phone], email : trippengpec.rr.com
Phone, fax, email. etc.
#1 #2 #3 #4 #5 #6 #7 #8
Existing ground elev, @basin/trench= ZS•O
Bottom Elev, of infiltration basin/trench= Z 1.0
Existing ground minus bottom elev.= y•0
Add 2' (max. bottom elevation)= (0•0
Date/Time of Soils Investigation : - 3o -64 s - 3�
_ _ r!
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to
decline to do the investigation. If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided. The soils investigation does not take the place of a soils report prepared by
an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 2H.1000, and assumes no liability should the.system fail.

MAY 23,,2006 10:05A Tripp Engineering 9107635631 page 3
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MAY 23,2006 10:05A Tripp Engineering 9107635631
page 2
INFILTRATION SITE VISIT REQUEST
Name of the Project : Lot 7 Landmark Industrial Park
Location (attach a clear vicinity map): Landmark Drive
Street address. SR number, community, etc.
Directions from the nearest major intersection: From the intersection of US Hwy 421 and Raleigh
Street, travel approximately'/. mile west on Raleigh St Turn south on Landmark Drive.
Owner/Applicant Name: Monroe Holdings LLC
Consultant Name: Tripp Engineering P.C.
Consultant Contact Information: 763-5100 fax [phone] email : trippeng(a.ec.rr.com
Phone, fax, email. eta
#1 #2 #3 #4 #5 #6 #7 #8
Existing ground elev. @basin/trench= IS•O
Bottom Elev. of infiltration basinttrench= Z 1.0
Existing ground minus bottom elev.= y•0
Add 2' (max. bottom elevation)= i10-0
Date/Time of Soils Investigation : 'J - J7 - o/ D - 3
Summary/Comments.
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to
decline to do the investigation. If the proposed infiltration system will be located in an area of existing
pavement and there is no open area nearby, equipment capable of breaking through the impervious
layer must be provided. The soils investigation does not take the place of a soils report prepared by
an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the infiltration
design requirements under NCAC 21-1.1000, and assumes no liability should the system fail.

SOS1D: 826935
Date Filed: 2/2/2006 4:44:00 PM
Elaine F. Marshall
North Carolina Secretary of State
C200603300023
ARTICLES OF ORGANIZATION
OF
MONROE HOLDINGS, LLC
The undersigned, being of the age of eighteen years or more, does hereby make,
acknowledge and submit these Articles of Organization, pursuant to N. C. G. S. Section
57C-2-20 for the purpose of forming a limited liability company under and by virtue of the
laws of the State of North Carolina:
1. The name of the limited liability company is MONROE HOLDINGS, LLC.
2. The period of duration of the limited liability company is perpetual.
3. The name and address of each organizer executing these articles of
organization is as follows:
1. Harold A-Layhe, Jr
603 Monroe Ave.
Carolina Beach, NC 28428
4. The street address and county of the initial Registered Office of the limited
liability company in the State of North Carolina is 603 Monroe Ave., Carolina Beach, New
Hanover County, North Carolina 28428.
5. The name of its initial Registered Agent at such address is HAROLD A.
LAYNE, JR.
6. The street address and county of the Principal Office of the limited liability
company in the State of North Carolina is 603 Monroe Ave., Carolina Beach, New
Hanover County, North Carolina 28428.
1

7. The limited liability company shall be member managed and all members
by virtue of their status as members shall be managers of this limited liability company.
8. These*articles shall be effective upon filing.
IN WITNESS WHEREOF, I have hereunto my hand this ffday of January,
i
RAROCD A. L4YSE, JR.
Manager/Organizer
2