SW8070546_HISTORICAL FILE_20071105 (2)

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 01055 4o
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
© HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
zoo --I 1105"
YYYYMMDD

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
501
ww� 1
November 5, 2007
C.M. Mitchell, President
C.M. Mitchell Construction, Inc.
PO Box 409
Sneads Ferry, NC 28460
Subject: Stormwater Permit No. SW8 070546
C.M. Mitchell Construction Office Building
High Density Commercial Project
Onslow County
Dear Mr. Mitchell:
Coleen H. Sullins Director
Division of Water Quality
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
C.M. Mitchell Construction Office Building on May 22, 2007. 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 21-1.1000. We are forwarding Permit No. SW8 070546, dated
November 5, 2007, for the construction of the subject project.
This permit shall be effective from the date of issuance until November 5, 2012, and shall be subject to
the conditions and limitations as specified therein. Please note that this is a 5 year permit due to the
potential problems with this deemed permitted site. Please pay special attention to the Operation and
Maintenance requirements in this permit. At the time of permit renewal, the current deficiencies must be
addressed, including basin details, drainage area, vegetated filter and the storage/spillway elevation.
Failure to establish an adequate system for operation and maintenance of the stormwater managernent
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 Linda
Lewis, or me at [phone].
Sinc Iy,
E ward Beck
Regional Supervisor
Surface Water Protection Section
ENB/arl: S:\WQS\STORMWATER\PERMIT\070546.nov07
cc: Weston Lyall, P.E.
Onslow County Inspections
Linda Lewis
Wilmington Regional Office o
Central Files NoCthCarolina
,Aatrrrn/!y
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional 01fice Internet: wws4rncwatcrumdi1Ytore Fax [phone]-623-67,18
An Equal Opportunity/Affirmative Action Employer— 50%Recycled/10% Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 070546
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
C.M. Mitchell and C.M. Mitchell Construction, Inc.
C.M. Mitchell Construction Office Building
2256 Highway 172, Sneads Ferry, Onslow County
FOR THE
construction, operation and maintenance of 1 infiltration basin 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 5, 2012 and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.8 of this permit.
3. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
4. The basin must be operated with a 30' vegetated filter.
5. All side slopes shall be vegetated and sloped at 3:1 (H:V) or flatter.
6. The runoff from all proposed built -upon area must be directed into the proposed
infiltration basin.
7. The spillway elevation must be set at 41 in order to provide the minimum
required storage volume.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 070546
The following design elements have been approved for this infiltration basin
stormwater facility, and must be provided in the system at all times.
a.
Drainage Area, acres:
1.78
Onsite, ftZ:
77,537
Offsite, ftZ:
0
b.
Total Impervious Surfaces, ftZ:
55,780
Buildings, ftZ:
11,326
Roads/Parking, ftZ:
44,454
Other, ftZ:
0
Offsite, ftZ:
0
c.
Basin Depth, feet:
3.0
d.
Design Storm, inches:
1"
e.
Seasonal High Water Table, FMSL:
36.0
f.
Bottom Elevation, FMSL:
38.0
g
Permitted Surface Area @Bottom, ftZ:
900
h
Permitted Storage Volume, ft3:
4,563
i.
Storage Elevation, FMSL:
41.0
j
Type of Soil:
Leon
k.
Expected Infiltration Rate, in/hr:
5
I.
Time to Draw Down, hours:
drawdown time
m.
Receiving Stream / River Basin:
Mill Creek / WOK
n.
Stream Index Number:
stream index #
o.
Classification of Water Body:
"SA HQW"
It. SCHEDULE OF COMPLIANCE
1. No homeowner/lot owner/developer shall fill in, alter, or pipe any drainage feature
(such as swales) shown on the approved plans as part of the stormwater
management system without submitting a revision to the permit and receiving
approval from the Division.
2. The permittee is responsible for verifying that all of the proposed built -upon area
is directed into the basin and that the total built -upon area does not exceed the
permitted 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. 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 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.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 070546
5. The Director may determine that other revisions to the project should require a
modification to the permit.
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.
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately. Infiltration systems should not be used
as erosion control devices, due to the potential clogging. 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.
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.
The permittee shall at all times provide the operation and maintenance
necessary to assure that all components of the permitted stormwater system
function 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 side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of filter media, bypass structures, orifice,
catch basins and piping.
g. Access to all components of the system must be available at all times.
10. 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.
11. Permanent seeding requirements for the stormwater control must follow the
guidelines established in the North Carolina Erosion and Sediment Control
Planning and Design Manual.
12. Prior transfer of the permit, the stormwater facilities will be inspected by DWQ
personnel. The facility must be in compliance with all permit conditions. Any
items not in compliance must be repaired or replaced to design condition prior to
the transfer. Records of maintenance activities performed to date will be
required.
13. 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.
14. Built upon area includes, but is not limited to, structures, asphalt, concrete,
gravel, brick, stone, slate, coquina and parking areas, but does not include
raised, open wood decking, or the water surface of swimming pools.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 070546
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event there is either a desire for the facilities to
change ownership, or there is a name change of the Permittee, a completed
"Name/Ownership Change Form" must be submitted to the Division of Water
Quality signed by both parties involved, accompanied by the appropriate
documentation as listed on page 2 of the form. The project must be in good
standing with DWQ. The approval of this request will be considered on its merits
and may or may not be approved.
2. The permittee is responsible for compliance with all of the terms and conditions
of this permit until such time as the Director approves the transfer request.
3. 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.
4. 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.
5. 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.
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. Permittee grants permission to staff of the DWQ to access the property for the
purposes of inspecting the stormwater facilities during normal business hours.
8. The permittee shall notify the Division in writing of any name, ownership or
mailing address changes within 30 days.
9. 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.
Permit issued this the 5th day of November 2007.
N09TH CAROLIN ENVIRONMENTAL MANAGEMENT COMMISSION
for CoTeen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
-2 -ZOO
D t 0 D
�5w
5-:?Z-Zx? Mod.
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 t[v� corporation, individual, etc. who owns the project):
C.M. M ITCIfeGL 00,jS4rZuc4J,.I. -ruC E CM MI-QtfJU ESvW5,LL6
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
e. M• M 1.7CRELL ld2v< , ow T
3. Mailing Address for person listed in item 2 above:
City: S'/46Aos tckeMIl State: NL zip:ZA-4&0
Telephone Number: ( �) 10 ) 3 Z 7 - 2 9 o -7
4. Project Name (subdivision, facility, or establishment name -should be consistent with project name on plans,
specifications, letters, operation and maintena9te agrAments, etc.):
5. Location of Project (street address):
2Z56 11PJV 172 5n16AO l8'RRY .NL Z a 4 4
County: QNS Low
0. Directions to project (f yoom nearest major intersection): /
lzop. ZJ'(SCSB�7�ew eQ� NILLIo eNC/72 /moo $ek-�'t� oN N617Z_
_Forz /.5 /►r,l6i. TRejec-Foa ��al,-�
J
7. Latitude: 3q°_ 13 -it" Longitude: 77"- Z 4 — 4 8 I ' of project
8. Contact person IIwho can answer questions about the project:
Name: 1J E 5 Tort L 51 AU Telephone Number: ( 910 ) 3 ZS — S3 3'3
Ii. PERMIT INFORMATION:
1. Specify whether project is (check one):
Form SWU-101 Version 3.99
✓New Renewal Modification
RECEIVED
Page I of MAY," 2007
DWQ
a$OJ #

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number and its issue date (if known)
3. Specify the type of project (check one):
Low Density High Density Redevelop ALOGeneral Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major ✓Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pa es) describing stormwater management for the project .
47oRttnl.I,t1a L.IM hc. d¢.Lrw. - ,.t l'tn6 R';4'�ter4 poNJ w Air
Soo.- t...tef _y4 eo¢,vcfl m.c Tffi: Co-t-4,
2. Stormwater runoff from this project drains to the W t � ONI River basin.
3. Total Project Area: 2 c t $ acres 4. Project Built Upon Area: 7 2
5. Flow many drainage areas 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.
Basin Information
Drainage Area I
MILL ICRE
Drainage Area 2
Receiving Stream Name
Receiving Stream Class
SA'
Drainage Area
1,10 c- 77577 S
Existing Impervious" Area
Q
Proposed impervious*Area
I-ZA 455-760 SF
% Impervious* Area (total)
72 n e
Impervious* Surface Area
Drainage Area 1
Drainage Area 2
On -rile Buildings
0124 it 32/o S
On -site Streets
0,00
On -site Parking
6-01 44 7 gy.
On -site Sidewalks
0-0
Other on -site
1.01 o7ti
Off -site
p,p
Total: 1.2e Ac S5 Igo 5or
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of

7. How was the off -site impervious area listed above derived7 & 0i4'Le6+i!44ar6;57LOl"'t (96r4'+V S
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 of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than square feet of any lot shall be covered by structures or 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 -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and Ceneral 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

C..
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.
tials
• Original and one copy of the Stormwater Management Permit Application Form
• One copy of the applicable Supplement Form(s) for each BMP
Permit application processing fee of $420 (payable to NCDENR)
• Detailed narrative description of stormwater treatment/management
• Two copies of plans and specifications, including:
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VIL 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 L
,fi/Irm):: I V'166S Lori ..l ALL r)y
Mailing Address: 4po N!• Al-aw { l1
ya 4.
City: Qt Ct State: /J C Zip: 4644-5
Phone: (mJ iO ) 3 ZS —5333 Fax: ( )
Vlll. APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) C ' 114 - Ai ZTCI%v L L
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 .100000.
Signature:l.. 10�t.'Z 5;; 22-4� Date:-1 O i
Form SWU-101 Version 3.99 Page 4 of

North Carolina Secretary of State
Page 1 of 1
North Carolina
Elaine F. Marshall DEPARTMENT OF THE
Secretary SECRETARY OF STATE
PO Box 29622 Raleigh, NC 2782E-0S22 [phone]
CORPORATIONS
Corporations Home
Search By Corporate Name
Search For New Corporation
Search By Registered Agent
Important Notice
Corporations FAQ
Homeowners' Association FAQ
Tobacco Manufacturers
Dissolution Reports
Non -Profit Reports
Verify Certification
Online Annual Reports
LINKS & LEGISLATION
KBBE B2B Annual Reports
SOSID Number Correction
2001 Bill Summaries
1999 Senate Bills
Annual Reports 1997
Corporations 1997
Register for E-Procurement
Dept. of Revenue
ONLINE ORDERS
Start An Order
New Payment Procedures
CONTACT US
Corporations Division
Secretary of State's web site
TOOLS
Secretary of State Home
Secretary of State Site Map
Printable Page
Date: 11/5/2007
Click here to:
View Document Filings I
711 Print apre-populated Annual Report Form I Annual Report Count I File an
Annual Report I
Corporation Names
Name Name Type
NC C. M. MITCHELL
CONSTRUCTION COMPANY, Legal
INC.
Business Corporation Information
SOSID:
0437984
Status:
Current -Active
Date Formed:
9/19/1997
Citizenship:
Domestic
State of Inc.:
NC
Duration:
Perpetual
Registered Agent
Agent Name:
Registered Office Address:
Registered Mailing Address:
Principal Office Address:
Principal Mailing Address:
Mitchell, Charles Matthew
2256 Highway 172
Sneads Ferry NC 28460
PO Box 409
Sneads Ferry NC 28460
2256 Highway 172
Sneads Ferry NC 28460
PO Box 409
Sneads Ferry NC 28460
Stock
Class Shares No Par Value Par Value
COMMON 1000 Yes N/A
For questions or comments about the Secretary of State's web site, please send e-mail to Webmaster.
http://wwNv.secretary.state.nc.us/corporations/Corp.aspx?Piteinld=4813113 11/5/2007

Re: CM Mitchell
Subject: Re: CM Mitchell
From: Wes lyall <[e-mail]>
Date: Fri, 18 May 2007 12:38:26 -0700 (PDT)
To: Linda Lewis <[e-mail]>
I will in Wilmington on may 22. i will drop off the second set of plans then.
thank you
Wes
Linda Lewis 4inda.iewis@iicmaiLnet> wrote:
Mr. Lyall:
The additional information for this project was received on May 2, 2007.
Unfortunately, you only sent in one set of the revised plans. I must
have a minimum of 2 sets in order to conduct the review.
Linda
1 of 1 5/18/2007 4:42 PM

Weston Lvall, PE, PLS
ENGINEERING, SURVEYING AND PLANNING
STORM WATER DRAINAGE, RUNOFF, RIP RAP APRON
AND CHANNEL FLOW CALCULATIONS
OFFICE BUILDING
C.M. MITCHELL AND SONS LLC
STUMP SOUND TOWNSHIP, ONSLOW COUNTY, NORTH CAROLINA
Februm?-9, 2007
REViSap APpL- Zit zeo-k
RECEIVEI.
MAY 0 2 2007
Paoa a 0 �O 054&
205 Ridgewood Drive, Rocky Mount, N.C. 27803 251-885-2768
Email: [e-mail]

STORM WATER MANAGEMENT NARRATIVE
OFFICE BUILDING
C. M. MITCHELL CONSTRUCTION, INC
STUMP SOUND TOWNSHIP, ONSLOW COUNTY, NORTH
CAROLINA
This project site consists of 2.45 acres of which 1.78 acres is will be
contained in the proposed detention pond.
The existing drainage for the front half of the property is currently sheeting
to the north of the property into the roadway ditch of NC 172. The existing
drainage for the rear half of the property is currently sheeting to the south
and west of the site into an existing outlet ditch, which carries the water off -
site.
The proposed drainage plan will drain approximately'/4 of the impervious
area to the southwestern portion of the site into the detention pond.
The project is located on the southern side of NC 172 approximately 1.5
miles East of the intersection NC 172 and NC 210.
The watershed breakdown for Drainage area one is as follows: I
Project site
2.45 ac
106700 SF
Drainage area
1.78 ac
77522
SF
,%�O%
Wetlands
1.09 ac
47480
SF
l : • of
Building impervious area
0.26 ac
11326
SF
- S
Proposed impervious area
=
(includes building)
1.28 ac
55757
SF
GI EE
N L`
'1111111110

WATER QUALITY VOLUME AND PEAK FLOW
WQv = [( RAIN EVENT)(Rv)(A)] / 12
Rv = 0.05+.009(I) =
I = Percent impervious area = 72
A = area in acres =
Rain event =
WQv = 0.10354 acre-feet 4510 CF
for Basin 1
4563 CF
Basin Size
Length, at Base = 30 ft
Width , at base = 30 ft
Side Slopes = 3 :1
Bottom Elev. = 38 ft
Top Elev. = 41 ft
Volume = 4563 CF
1.78
1 inch
required
2
Designed ,
2
I on
h25ac e`0'2
Why
P�N CqR
27885
%� s �G/NEO'P��`,`�
.,TO,
NL�

PIPE SIZING FOR DRAINAGE AREA ONE
Street,sidewalk
Parking lot
Commerical
Apartment,schools,
churches
Residences:
10 dwelling/acre
6 dwelling/acre
4 dwelling/acre
2 dwelling/acre
Unimproved clearing
Lawn,dense soil
steep>7%
avg. 2-7%
flat<2%
Lawn, sandy
avg. 2-7%
flat <2%
Wooded
deep ground litter
sparse ground litter
Playground
C
TOTAL AREA = 1.78
ACRES
0.95
0.95
C A
C*A
0.85
C1 0.95 1.28
1.22
0.60
C2 0.85 0.50
0.43
C3 0.60 0.00
0.00
AVG. C 0.92
0.60
0.55
Longest run-off length(L)=
370
0.50
Elevation difference(E)=
1
0.40
0.35
((LA3/E)A.385)/128= tC =
7.2
0.35
0.22
0.17
0.15
0.10
0.10
0.20
0.35
INTENSITY (1)
min.
tc
10 yr.
25 yr.
50 yr.
5 min
7.5
8.6
9.1
in/hr.
10 min
6.5
7.4
8.0
in/hr.
15 min.
5.6
6.4
6.95
in/hr.
30 min.
3.9
4.6
5.0
in/hr.
1 hr.
2.65
3.05
3.4
in/hr.
2hr.
1.55
1.9
2.1
in/hr.
INTENSITY FOR
Park, cemetery
0.25
I=g/(h+tc) =
1=g/(h+tc) =
,/
1=g/(h+tc) =
OP�H'Cg9 'a
OFESs • 0 '
e91
S to7% lost I
Diameter of pipe(D)= 16'(Q'n / "(3/8)
sgrt(s))
Q= 13.0
Slope of pipe (s)= length of pipe / fall in pipe
length = 20 ft.
fall = 0.1 ft.
s= 0.005 = 0.50 %
7.2
min.
g
h
6.39
10 year
225
28
7.95
25 year
280
28
8.63
50 year
304
28
USING INTENSITY OF 7.95
Q=C*I*A = 13.0 cfs
Manning roughness (n)= 0.024 Metal Pipe
D(req'd)=
28.0
inches
pipe req'd=
30.0
IN
pipe req'd=
0.0
IN
Full flow Velocity=
3.0
fps
Pipe, Percent full=
86.8
%
Manning roughness (n)= 0.015 Conc. Pipe
D(req'd)=
23.4
inches
pipe req'd=
24.0
IN
pipe req'd=
0.0
IN
Full flow Velocity=
4.3
fps
Pipe, Percent full=
95.3
%
Manning roughness = 0.012 HDPE Pipe
D(req'd)=
21.6
inches
pipe req'd=
24.0
IN
pipe req'd=
0.0
IN
Full flow Velocity=
5.1
fps
Pipe, Percent full=
80.7
%

DRAWDOWN TIME
T=(7x10'5)A(H-H )o.s
ca
T = Drawdown Time (Hrs.)
a = pipe diameter (inches)
A = average surface area of pond (ft2 )
c = orifice coefficient
H = Full pond elevation
Ho = Final pond elevation or static elevation
Fill in Data:
a= 1.5 0.012 S.F.
A= 992
c= 0.66 (c = 0.66 for thin materials
H= 42 c = 0.80 when material is thicker than orifice diameter)
Ho= 38
Answer: T = 17.15 Hours

WESTON L YALL, PE, PLS Az
STRUCTURAL — CIVIL ENGINEERING
LAND SURVEYING
604-A NORTH NEW RIVER DRIVE
SURD CITY, NC 28445
910-328-5333 Office 252-885-2768 Cell
April 27, 2007
Subject: Stormwater study
C. M. Mitchell Construction, Inc.
Sneads Ferry, NC 28460
The stormwater study performed by the Land Management Group, Inc on April 4, 2006
(letter attached), states Mr. Vincent Lewis (NCDENR) was present. It is understood by
C. M. Mitchell Construction, Inc. that Mr. Lewis was only there to verify the site
conditions and "Holds Harmless" Mr. Lewis for any liability pertaining to this project.
Sincerely,
IJ���
Weston Lyall, PE
'2:aQ SEAL9�:�
27885
,,,STpN L��.•`'
���tlllttt�`
C. M. Mitchell, President
Pile Plans, Foundation Designs, Structural Designs, Structural Analysis
Subdivision Designs, Land Surveys, Plot Plans, Elevation Certificates
All Your Engineering and Surveying Needs

Keb 21 07 08:49a Land Management Group Inc 9104520060 p,2
aZCr09/��/7i721t�P//%2fJ17Af
�'naoi��rr9nnm�(�c/ �(1'nzra>ro!/natda
aJ'ar✓ r/lii0 &r,?,<�<�
'ilSlnrr�i�/r.�a, ✓i'n•r/✓ �xrrnli+a1R40$
Rirnel
.;,CfS :a/iI�iAAnr//r. �tyrrnor, fni�e>.S 5-
April 4. 2006
Ivt.J. Klinker
Parker & Associates, inc.
P.O. Box 976
Jacksonville, NC 25541-0976
Refcmnce: Stormwater study for the Melt Mitchell site on Highway 172 near Snead's
Ferty, NC
Dear Mr. Klinker:
Land Managcment Group, Inc. has recently had the pleasure of evaluating the
atcreme-ntioned stormwater infiltration site. The purpose of the evaluation was to
examine a typical soil profile, quantify the depth to the seasonal high water table, to
estimate infiltration rates and to inform the project engineer of any potential limitations
of this proiect. I offer the follot;ing comments.
In a joint meeting between yoty I and Vincent Lewis (NCDEriR), it was
determined that the most feasible location for stormwater inllltmtion was the area in the
extreme southwestern comer of the site in the area dissected by an old ditch. The soils in
this location are the best drained soils tbat can possibly be proposed for stormnater
infiltration on this site. These soils ate most closely associated with the Leon soil series.
Atypical profile description of the flagged x-ea is attached. This area has a seasonal high
water table depth of approximately 24" below the existing soil surfacc with the area
flagged by Vincerat Lewis on February 22, 2006 and depicted in a map from your office
on March 31, 2006, In accordance Nvith Mr. Lewis's direction, this area should be
Proposed for stormwater infiltration with tire existing soil surface being considered 24"
above the seasonal high water table up to a point 5 feet horizontally from the existing
ditch. However, in order to utilize this site, the objectionable soil horizons must be
removed and backflled Kith clean sand and then the side slopes of the containment area
Ail] have to be raised in order to provide for, the requisite storage based upon your
erruincering calculations. Specificaily, you will need to excavate 36" in order to
successfully remove all objectionable material. The sand back fill shall be clean coarse
sands (mortar sand as identified by Vincent Lewis). I will be glad to field verify ilte
quality of the sand backfill if you desire. A five foot corridor of soils along the existing,
ditch shall bo deep chisel plowed in a direction parallel to the existing ditch in order io
RECEIVED
MAY 0 2 2007
DwQ
PROD #

-Feb 21 07 06:49a Land Management Group Inc 9104520060 p,3
disrupt any cemented l3h horizons and to maximise the e-ffcctiveness of the ditch. After
proper excavation and backfill, the site can be proposed for stormwater infiltration at a
rate of 5 inches per hour within the flagged area based upon a seasonal high water table
depth of 24".
In summary, the site can be proposed for stormwater infiltration in accordance
with the above referenced design criteria (24" seasonal high water table and 5 inches per
hour infiltration rate after backfill and chisel plo"gng). ; I did not observe any other
factors that would limit the ability of this site to serve as a stormwater infiltration area as
described, Please do not hesitate to contact me if you have any questions with this report.
I may be reached at 910-452.0001, 9.10-471-07 7 or at iwil(iams 2lmarot;n.net .
Sincerely,
" Jolm P wt1Hams
NC Ucense'd Soil Scientist, #1113
SC Professional Soil Classifier, 458
'f�

Feb 21 0"' 06:49e Land Management Group Inc 9104520060 p_4
Most Limiting Soil. Description
Micro -ridge, 0-2% slope
A 0-3" Sand, granular, vfr, ns, np 2.5Y4/1
El 3-8" Sand, granular, vfr, ns, np 2.5Y5/I
E2 8-15" Sand, single grain, v$, ns, np 2.5Y6/1
Bh 1 15-18" Sand, weak subanguiar blocky, fr, ns, np 2 jSY15/1
B112 18-26" Sand structurelesss parting to weak subari tular blocky, brittle, strongly
cemented, vfi, ns, np 10YR5/6, 10YR4/6
Bwl 26-36" Sand, granular, fr, ns, np 10YR5/4, 2,5Y5/3
Bh' 36-39" Sand, structurelesss parting to weak suban i lar blocky, non -brittle, slightly
cemented, fr, ns, np 2.SY2.5/1
C 39-45" Sand, structureless, vfr, ns, np 10YR8/ 1
Bh" 45-48" Sand, structurelesss parting to weak suban' lar blocky, non -brittle, slightly
cemented, fr, ns, np 2.SY2.5/1 If
C' 48-60" Sand, struchrreless, fr. ns, np 2.5Y4/4
Typical depth to limiting infiltrating layer is 28"
Note Clean E horizons with salt and pepper in A
Estimated high water table; 24"
Observed high water table ou February 22, 2006: 28" to 37"

wArF9
April 9, 2007
Matt Mitchell
C.M. Mitchell
PO Box 409
Sneads Ferry,
Construction, Inc.
NC 28460
Project Name: C.M. Mitchell Construction
County: Onslow County
Project Number: SW8 not assigned
Dear Mr. Mitchell:
Michael P. Easley, Governor
William G. Ross Jr., Secmtary
North Carolina Department of Fovironment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
Your recent stormwater management permit application and your consultant's check #1597 for
the $420.00 application fee are being returned because the application lacked the necessary
basic elements to accept it for review. A phone message was left with Weston Lyall on March
29, 2007, regarding the deficiencies of this application. The plans and any other
documentation that were submitted have been discarded or recycled, as appropriate. Please
address the following noted deficiencies and provide the requested information:
® Please report your official title in the corporation as it appears with the Secretary of
State in Section 1.2 of the application. You must be at least a vice-president in order to
sign the application.
®, Please report all of the proposed and total BUA amounts in square feet in Section 111.6
of the application.
Please have the consultant sign, seal and date the plans.
Please have the consultant sign, seal and date the design calculations.
Please have the consultant include a calculation of the drawdown time in the sealed
calculations.
® Please report the classification of the receiving stream on the application.
If the receiving stream is class SA waters, and the site is within '/z mile of the SA waters
or unnamed tributaries to SA waters, the infiltration system must be designed using a
1.5" design storm. If you do not use a 1.5" design storm, please submit a copy of that
portion of the appropriate USGS topographic map with the site accurately located
demonstrating that it is at least ''/z mile from SA waters or unnamed tributaries to SA
waters.
® All infiltration systems must be offline, that is to say, the excess design storm must be
diverted away from the basin through a vegetated filter.
® Please remove all references to Vincent Lewis in the soils report from Land
Management. Vincent is there only to verify the site conditions that your soils consultant
has determined. He is not there to estimate the Seasonal High Water Table elevation
for you. The Division is unable to assume any liability should the system fail.
® The grading plan needs more spot elevations to ensure all of the runoff from all of the
proposed impervious areas is being directed into the basin.
® Please show on the vicinity map how far down NC 172 the site is located from US 17.
-Please also include the NCSR number for Country Club Road.
® The narrative indicates that the drainage area is 2.45 acres, but the application reports
a drainage area of only 1.78 acres.
N"orlhCarolma
Jvatrrrally
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional Office Internet: www.newaterguality.ore Fax [phone]
An Equal OppodunitylAKrmative Action Employer — 50% Recycledlt 0% Post Consumer Paper

Mr. Mitchell
April 9, 2007
Page 2 of 2
Please resubmit the permit application package to the address below. NotE
the 90-day statutory permit review time begins upon receipt of a complete
application. If you have any questions, please do not hesitate to call me at
796-7335.
Sincerely,
Linda Lewis
Environmental Engineer
cc: Weston Lyall, P.E., P.L.S.
Linda Lewis
ENB/arl: S:\WQS\STORMWAT\RETURN\CMMitchell.apr07
that
(910)

Re: CM Mitchell Site
Subject: Re: CM Mitchell Site
From: Linda Lewis <[e-mail]>
Date: Mon, 09 Apr 2007 14:37:57 -0400
To: wes lyall <[e-mail]>
Thank you for the response Mr. Lyall- I'm glad to know you received my message and
are working on the project.
Linda
wes lyall wrote:
Ms. Lewis,
i am in the process of completing the application per your phone
call last week and the attached email. i will have completed
application to you by the end of this week. thank you
Wes
*/Linda Lewis <linda. lewis@ncmail. net>/* wrote:
Mr. Lyall:
Please find attached my return comments regarding this
incomplete
application.
Linda
1 01,1 4/9/20072:38 PM

SOSI D: 0437984
Date Filed: 4/9/2007 5:35:00 PM
Elaine F. Marshall
dD-479 t39) ` Business Corporation North Carolina An North Carolina Secretany of State
10-IN6 y 2007 099 10452
This report may be filed online at the Secretary of State websile: www.sosnc.
Name of Business Corporatiow CM MITCHELL CONSTRUCTION COMPANY, INC
Fiscal Year Ending: 12-31-06 Slate of Incorporation: NORTH CAROLINA
Month / Dey / Yaw
Secretary o1 State ID Number: 0437984
Q I hereby certify that the information requested below (required by NCOS 55-16.22) has not changed since the most recently tiled annual
report and Is therefore complete.
Nature of Business:
CONSTRUCTION
Registered Agent:
CHARLES MATTHEW MITCHELL
Registered Office Mailing address:
P.O. BOX 409
County: City: State: Zip Code:
SNEADS FERRY, NC 28460
Registered Office Street Address.
2256 HIGHWAY 172
County: City: State: Zip Code:
SNEADS FERRY, NC 28460
Signature of New Registered Agent.
tsieneture COMhtVte�(An>Krll to rna �PPointnmq
Principal Office Telephone Number:
[phone]
Principal Office Mailing Address:
P.O. BOX 409
City: State: Zip Code:
SNEADS FERRY, NC 28460
Principal Office Street Address'.
2256 HIGHWAY 172
City: State: Zip Code:
SNEADS FERRY, NC 28460
lame, Title, and Business Address of Principal Officers
Name:CHARLES MATTHEW MITCHELL Title: PRESIDENT
Address: 2256 HIGHWAY 172
SNEADS FERRY, NC 28460
City' State Zip:
Name: Title:
Address:
City: State Zip'.
Name: Title:
Address:
City: Slate Zip:
Certification of annual report (Must be completed by all Business Corporations).
D3-14-01
^yam G1 Al ' ,Date
TNe
6695..........w

Send To Printer Back To Ten-alewer Change to 8.5x11 Print Size Show Grid Lines Change to Landscape
ZLJSGS 5 km SW of Sneads Ferry, North Carolina, United States 01 Jul 1991
(.rt
n trish ko
ry
Int
r W,
A ;o iti Point.:
?Y
V
A
V, C
%
r
r
Al
u n--.
13
Poflacksv
A?&.. Z
- 7
Po -In r
Point
;�v
L
I
Y Pavony'
\X
1 "Fulc
N,
r
X7
V
VVT
aud
h Vjr tHoiG'
f
6 nr
elf,
If
L
- � 5 j 'd,
z,
Rig Aianim
n', 2 ha T'
2)
,`Sal d
In
x -
.7,Q Tay
. ...........
17 77-r J,
Z� 'X()VESS,
SEAL
inq
Ail 27885 e,:"
3.
nC
n -
.4
NEV?
0 -n .A "K
q
. J1}Z
ell
V
fest. Ons"
ar
0. 12Knn 01 . I
Image courtesy of the U.S. Geological S
2004 Microsoft Corporation. Terms of Use
Statement