SW8080944_HISTORICAL FILE_20081124

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 OSOqHL4
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2oosskl2Li
YYYYMMDD

Michael P. Gasley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen II. Sullins Director
Division of Water Quality
November 24, 2008
Carl Baker, Deputy Public Works Officer
Marine Corps Base, Camp Lejeune
BLDG 1005 Michael Road
MCB Camp Lejeune, NC 28547
Subject: State Stormwater Management Permit No. SW8 080944
Camp Lejeune, BEQ, MCAS P-634
High Density Commercial Wet Pond Project
Onslow County
Dear. Mr. Baker:
The Wilmington Regional Office received a complete State Stormwater Management
Permit Application for BEQ, MCAS P-634 on November 21, 2008. Staff review of the plans
and specifications has determined that the project, as proposed, will comply with the
Stormwater Regulations set forth in Session Law 2008-211 and Title 15A NCAC 2H.1000. We
are forwarding Permit No. SW8 080944, dated November 24, 2008, for the construction and
operation of the subject project.
This permit shall be effective from the date of issuance until November 24, 2018, and
shall be subject to the conditions and limitations as specified therein. Please pay special
attention to the Operation and Maintenance with annual reporting requirements in this permit.
Failure to establish an adequate system for operation and maintenance of the stormwater
management system will result in future compliance problems.
If any parts, requirements, or.limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30) days
following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150E 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 N] d. Naugle, or me at [phone].
Sinc ely,
Edward eck
Regional Supervisor
Surface Water Protection Section
ENB/mjn: S:\WQS\STORMWATER\PERMIT\080944 nov08
cc: Howard Resnik, PE, Coastal Site Design, PC, 910-791-4441, fax: 1501
Onslow County Inspections
Wilmington=Regional-Office-
Central Files N0)thCarolina
M.J.Naugle jl)aturrrU�
North Carolina Division of Water Quality 127 Cardinal Drive Extension Wilmington, NC 28405 Phone [phone] Customer Service
Wilmington Regional Office Internet: r,,,,vro:«a(etquality.or. Fax [phone] I-877-623-6748
An Equal Opportunity/Affirmative Actxm Employer— 50% Recycled110 % Post Consumer Paper

State Stormwater Management Systems
Permit No. SW8 080944
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY COMMERCIAL 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
Carl Baker, Deputy Public Works Officer and MCB, Camp Lejeune
Camp Lejeune, BEQ, MCAS P-634
Douglas Road, MCB Camp Lejeune, Onslow County
FOR THE
Construction, operation and maintenance of one wet detention pond in compliance with the
provisions of Session Law 2008-211 and 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 24, 2018, 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 1.7 of this permit. The stormwater control has been
designed to handle the runoff from 143,951 square feet of impervious area. An
additional 1,897 square feet of impervious area is permitted on incidental
driveway entrances.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.7
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, except for
the 1,897 square feet of incidental BUA on entrance driveways.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 080944
6. The built -upon areas associated with this
project shall be located at least 50 feet
landward of all perennial and intermittent surface waters.
7. The following design criteria have been
provided in the wet detention pond and
must be maintained at design condition:
Incidental
Pond 1
Driveway Entrance
a.
Drainage 6rea, acres:
6.98
0.04
Onsite, ft :
303,884
1,897
Offsite, ft2:
none
none
b.
Total Impervious Surfaces, ft2:
143,951
1,897
Buildings, ft2:
26,620
0
Roads/Parking, ft2:
111,858
1,897
Sidewalk & Concrete, ft2:
17,975
0
Other
5,473
0
c.
Average Pond Design Depth, feet:
3.0
d.
TSS removal efficiency:
90%
e.
Design Storm:
1.5
f.
Permanent Pool Elevation, FMSL:
11.5
g.
Permanent Pool Surface Areq, ft2:
21,654
h.
Permitted Storage Volume, ft :
20,009
i.
Storage Elevation, FMSL:
12.3
j.
Pre-dev. 1 year 24 hour rate, cfs:
0.43
k.
Post-dev 1-yr, 24-hr rate, cfs:
0.21
I.
Discharge rate, cfs:
0.07
m.
Controlling Orifice:
2" 0 pipe
n.
Permanent Pool Volume, ft3:
69,148
o.
Forebay Volume, ft3:
15,133
p.
Maximum Fountain Horsepower:
/4 HP
q.
Receiving Stream / River Basin:
UT to Southwest Creek / White Oak
r.
Stream Index Number:
19-17-(0.5)
S.
Classification of Water Body:
"C;NSW"
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all time 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 re -vegetation of slopes and the vegetated filter strip.
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, level
spreader, filter strip, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
records will indicate the date, activity, name of person performing the work and
what actions were taken.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 080944
5. The permittee shall submit to the Division of Water Quality an annual summary
report of the maintenance inspection records for each BMP. The report shall
summarize the inspection dates, results of the inspections, and the maintenance
work performed at each inspection.
6. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
7. The facilities shall be constructed as shown on the approved plans. This permit
shall become void unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
8. 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.
9. 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.
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 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.
12. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
13. 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 080944
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 completed Name/Ownership Change form, to the Division of Water
Quality, signed by both parties, and accompanied by supporting documentation
as listed on page 2 of the form. The project must be in good standing with the
Division. 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 permit conditions until such
time as the Division 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) having 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 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.
7. 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 re -issuance or
termination does not stay any permit condition.
8. 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.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
10. 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 Session Law 2008-
211, Title 15A NCAC 2H.1000, and NCGS 143-215.1 et.al.
11. The permittee shall notify the Division of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. The permittee shall submit a permit renewal application at least 180 days prior to
the expiration date of this permit. The renewal request must include the
appropriate documentation and the processing fee.
Permit issued this tl�e twenty-fourth day of November 2008.
NORTH ROLINA EN RONMENTAL MANAGEMENT COMMISSION
for Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 080944
MCB Camp Lejeune, BEQ, MCAS, P-634
Stormwater Permit No. SW8 080944
Onslow County
Page 1 of 2
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 080944
Page 2 of 2
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
Onslow County Building Inspections
Page 7 of 7

. DWQUSE .ONLY `
Date Received
Fee Paid
Permit Number
/aI ur
hcsoo — 6�,-d
Lk-�G914
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION�FORMi 7--
This form may be photocopied for use as an original KIM/
I. GENERAL INFORMATION
2 12008
3Y:
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
MARINE CORPS BASE CAMP LEIEUNE
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Carl Baker,Deputy Public Works Officer
3. Mailing Address for person listed in item 2 above:
BLDG 1005 MICHAEL ROAD
City:MCB CAMP LEIEUNE State:NC Zip:28547
Phone: (910 ) 451-2213 Fax: (910 ) 451-2927
Email:[e-mail]
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
BACHELOR ENLISTED QUARTERS, MCAS P-634
5. Location of Project (street address):
City:MCB CAMP LEIEUNE County:Onslow Zip:28547
6. Directions to project (from nearest major intersection):
From Intersection of US HWY 17 and US HWY 24 travel southwest on HWY 17 for approximately 2.19 miles
turn left onto Bonnyman Road Bonnyman turns into Douglas travel on Douglas for .7 mile, site located on the
7. Latitude:34° 42' 52" N Longitude:77° 2747" W of project
8. Contact person who can answer questions about the project:
Name:Rodney Wright Telephone Number: (910 ) 791-4441
Email:[e-mail]
►L PERMIT INFORMATION:
1. Specify whether project is (check one):
►ZI
[]Renewal ❑Modification
Form SWU-101 Version09.25.08 Page I of

❑ il"rNOV72 JVX'T J
❑
T. Specify whether project is (check one): ®New Renewal Modification
1BY:
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 ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information on required state permits can be
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control 0404/401 Permit ❑NPDES Industrial Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will sheet flow through parking lot and discharge into grassed swale that will convey the water to a
stormwater pond designed for 90% TSS
2. Stormwater runoff from this project drains to the White Oak River basin.
3. Total Property Area: 8.97 acres 4. Total Coastal Wetlands Area: 0.00 acres
5. Total Property Area (3) — Total Coastal Wetlands Area (4) = Total Project Area**:8.97 acres
6. (Total Impervious Area / Total Project Area) X 100 = Project Built Upon Area (BUA):36.8
7. How many drainage areas does the project have?2
8. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For high density proiects, comolete the table with one drainage area fnr earh an oinoaroA mot,,...,.., t . A .,J ,.
Basin Ihformarion,'lt {
Drainage Area 1,.,. 4
;uDramage Area 2, '(nlctOt
Receiving Stream Name
UT }o 50UTI�wES1
UT
Stream Class & Index No.
C,NSW , 0
C,NSW
Total Drainage Area (sf)
303,884 sf (6.98 ac)
1,897 sf (0.04 ac)
On -site Drainage Area (sf)
303,894 sf (6.98 ac)
1,897 sf (0.04 ac)
Off -site Drainage Area (sf)
Existing Impervious* Area (sf)
Proposed Impervious*Area (sf)
143,951 sf (3.30 ac)
1,897 sf (0.04 ac)
% Impervious* Area (total)
47.4/.
100%
* Impervious Surfacee Area ,. „
, Ihamage Area 1 e
,;� `Dranage"Area 2
On -site Buildings (sf)
26,620 sf (0.61 ac)
On -site Streets (sf)
1,897 f (0.04 ac)
On -site Parking (sf)
93,883 sf (2.16 ac)
On -site Sidewalks (sf)
17,975 sf (0.41 ac)
Other on -site (sf)
5,473 sf ( 0.13 ac)
Off -site (sf)
Total (sf):
143,951 sf (3.30 ac)
1,897 sf (0.04 ac)
Impervious area is defined as the built upon area including, butnot limited to, buildings, roads, parking
areas, sidewalks, gravel areas, etc.
3aC' t i
I �C21
Form SWU-101 Version 09.25.08 Page 2 of 4

NOV 2 ] 2008
9. How was the off -site impervious area listed above derived?
Projects in Union County: Contact the DWQ Central Office staff to check to see if you project is located
within a Threatened & Endangered Species watershed that may he subject to more stringent stormwater
requirements.
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
One of the following property restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
Forms can be downloaded from htto://h2o.enr.state.nc.us/su/bm�i forms.htm - deed restrictions.
Form DRPC-1
High Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Density Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Low Density Residential Subdivisions
Form DRPC-6
Low Density Residential Subdivisions with Curb Outlets
By your signature below, you certify that the recorded property restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding on
all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the NC DWQ, 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 Permitting Unit at [phone] for the status and
availability of these forms. Forms can be downloaded from http://h2o.enr.State.nc.us/su/bmp forms.htm.
Form SW401-Low Density
Form SW401-Curb Outlet System
Form SW401-Off-Site System
Form SW401-Wet Detention Basin
Form SW401-Infiltration Basin
Form SW401-Infiltration Trench
Form SW401-Bioretention Cell
Form SW401-Level Spreader
Form SW401-Wetland
Form SW401-Grassed Swale
Form SW401-Sand Filter
Form SW401-Permeable Pavement
Form SW401-Cistern
Low Density Supplement
Curb Outlet System Supplement
Off -Site System Supplement
Wet Detention Basin Supplement
Infiltration Basin Supplement
Underground Infiltration Trench Supplement
Bioretention Cell Supplement
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Constructed Wetland Supplement
Grassed Swale Supplement
Sand Filter Supplement
Permeable Pavement Supplement
Cistern Supplement
Form SWU-101 Version 09.25.08 Page 3 of 4

i
VI. SUBMITTAL REQUIREMENTS i NOV 2 l 200E
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. Thelcomplete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at ht(p:Hh2o.enr.state.nc.us/su/msi maps.hun)
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
• Original and one copy of the Stormwater Management Permit Application Form
Restrictions Protective Covenants Form (if
pit Is
• Original and one copy of the Deed &
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP
2.
• Permit application processing fee of $505 (Express: $4,000 for HD, $2,000 for LD)
payable to NCDENR
• Calculations & detailed narrative description of stormwater treatment/management
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including:
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- 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 (such as additional information requests), please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):Coastal Site Design, PC qcW)-ell tZ> 5tJ\K, Pt
Mailing Address:PO 4041
L
State:NC Zip:28406
Phone: (910 ) 791-4441 Fax: (910 ) 791-1501
Ernail:[e-mail]
VILL APPLICANT'S CERTIFICATION
I, (print or type name of person listed in General Information, item 2) Car ) 1. ke-r
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 cov a is will be recor d, and that the proposed project complies with the requirements of 15A
NCAC 2H .1000. A
Date: //_ / 0.- G�
Form SWU-101 Version 09.25.08 Page 4 of 4

t P. 01
TRANSACTION REPORT
NOV-24-2008 MON 08:28 AM �
FOR: NCDENR 910 350 2004
SEND
DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP
NOV-24 08:26 AM 97911501 1'20" 8 FAX TX OK 618 t
t �
TOTAL 1M 20S PAGES: 8 t
State of North Carolina
Department of Wilmington
Environmenti ana Natural Resources
William G. Ross, Jr., Secretary
Michael F. Easley, Governor FAX COVER SHEE'r
Date'
tee^
To:
_mot` �C` �~
Co:
Fax:
Re:
No. Pages (excl. cover):
Express Permitting
from: Sandra
Phone r410 6"7265 ��
Fax: r9t013�4
om,njry
127 L'ardinal Arivc T:x[ension, Aflirmativc Action EmPiOYtV
Wilmington, NC 28405 • (910) 796-721.5 • An equal UpP

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P. 01
TRANSACTION REPORT
NOV-24-2008 MON 08:26 AM
FOR: NCDENR 910 350 2004
SEND
DATE START RECEIVER TX TIME PAGES TYPE NOTE M# DP
NOV-24 08:24 AM 919104512927 1'31" 8 FAX TX OK 617
TOTAL 1M 31S PAGES: 8
State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor William G. Ross, Jr., Secretary
FAX COVER SHEET
Date: l
To:
Co:
Fax: °,10 saw
Re
Hard copy to follow
No. Pages (excl. cover): .
Express Permitting
From: Sandra F..xum
Phone: [phone]
Pax: [phone]
127 Cardinal Drive Extension, Wibnington, NC 28405 • [phone] • An Fgoal Opportunity Afftinnativc Action Employer

SW8 080944 Camp Lejeune BEQ P634
Subject: SW8 080944 Camp Lejeune 13EQ P634
From: Mary Jean Naugle <[e-mail]>
Date: Sat, 22 Nov 2008 11:24:14 -0500
To: RODNEY WRIGHT <[e-mail]>, Mary Naugle <[e-mail]>
Rodney;
Please verify the receiving stream for this project, none was entered on the
application in section III (8): UT name and index no.
It appears to be UT to Southwest creek, 19-17-(0.5).
Thank you
Mary Jean
1 of 1 11/22/2008 11:24 AM

Wilmington, NC 28406
Phone: [phone]
Fax: [phone]
November 21. 2008
Mary Jean Naugle
Express Review Permitting
N.C. Department of Environment
And Natural Resources
Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405
Re: Express Submittal
P-634 Douglas Road Camp Lejeune
Onslow County
CSD Project No. 08-0198
Dear Mary Jean:
Enclosed please find the following items.
- one (1) copy of the Stormwater Management Calculations
- two (2) copies of sheets C1.1 through C1.5 , the "Sedimentation & Erosion Control and Storm Water
Management Plan"
- one (1) copy of the supplemental drawing EX1.1 — EX1.2
- Original stormwater application
- Original O & M for wet basin
- Check for $4,000 check # 263702
- Wet basin supplement
We hope that this information is sufficient for compliance with NCDENR/DWQ's regulations regarding Coastal
Stormwater. Please call if you have any questions.
Very truly yours,
4 W/�,
Rodney right U
Encl.: As noted above
cc: Caddell Construction
Calibre Engineering

STORMWATER MANAGEMENT CALCULATIONS
For
MCAS P-634
PREPARED FOR
Caddell Construction Co. INC
2700 Lagoon Park Drive
Montgomery, AL 36109
Prepared by:
COASTAL SITE DESIGN, PC
PO Box 4041
Wilmington, NC 28406
Phone: [phone]
Fax: [phone]
i�fgmrnr4rr.
14,
r f �FESS/0' ,9
iQ 9 _
p EAL l $ -
HowardRes nk, E. NOV 2 1 2008
I, v S1�S 06094 `I

COASTAL SITE DESIGN, PC
Wilmington, NC 28406
Phone: [phone]
Fax: [phone]
FOR STORMWATER EXPRESS REVIEW
November 20, 2008
PROJECT NAME: Bachelor Enlisted Quarters, MCAS P-634
MCB Camp Lejeune, NC
Onslow County
PROJECT DESCRIPTION: This project is for the construction of barracks and a parking lot to be located on the Marine
Corps Air Station Base at Camp Lejeune. The owner is the United States Marine Corps. There are no wetlands located
within the area of the development.
Stormwater from the site will drain into C;NSW waters located in the White Oak River Basin (Index # 19-17-(0.5)). The
project will be high density utilizing a wet detention basin as treatment for runoff, conveyed to the pond using both an
underground stormwater collection system and above ground flumes / swales. This project is subject to NPDES
Phase II requirements. Proposed impervious for the site is 47.4%. As with all high density stormwater projects, all runoff
from impervious surfaces will be collected and conveyed to the wet detention basin for treatment. The project will have
direct access onto Douglas Road.
Future plans call for the expansion of the parking lot and construction of an additional barracks building. All future
development will be permitted separately and provide its own stormwater collection and treatment.
PROJECT BMP: high density wet detention basin
STORMWATER ENGINEER/CONSULTANT: Coastal Site Design, PC
PO Box 4041
Wilmington, NC 28406
Howard Resnik, PE
[e-mail]
910 7914441 office
910 791 1501 fax

PROJECT DATA:
Existing Site Data (areas within property boundary
wetland area 0.00 sf (0.00 acres)
upland area 390,975sf (8.98 acres)
Total site area 390,975 sf (8.98 acres)
Proposed Site Data:
Proposed Building
26,620 sf
(0.61 acres)
Proposed asphalt/curb and gutter
95,564sf
(2.19 acres)
sidewalks
17,975 sf
(0.41 acres)
Fire access road
5,939 sf
(0.14 acres)
Total proposed impervious area
146,098 sf
(3.35 acres)
Soil Types:
Abbreviation Type and Description
Hydrologic Group
Area
Bab Baymeade
A
3.11 ac
MaC Marvyn
B
3.57 ac
On Onslow
B
0.31 ac
(See attached soils map and pages 132-134 of Table 15, "Physical and Chemical Properties of the
Soils")
Coastal Site Design PC
s P.O. Box 4041
,, WJminpton,NC28400

WAS P-634 POND CALCULATIONS•
PRE -DEVELOPED CONDITIONS FOR POND (see hydrograph summary and reports):
- Pre-dev. to Pond
CN Pre Developed = 49 (SCS) composite value determined as follows:
+/- 134,832 sf of soils are A, woods fair (CN = 36)
+/- 155,712 sf of soils are B, woods fair (CN = 60)
+/- 13,340 sf of soils are B, woods fair (CN = 60)
Area= 303,884 sf or 6.98 acres
Hydraulic length = 333 ft
Basin slope = 3.6%
Qmax for pre-dev 1-yr/24-hr storm = 0.43 cfs
Qmax for pre-dev 10-yr/24-hr storm = 6.60 cfs
POST -DEVELOPED CONDITIONS (see hydrograph summary and reports):
- Post-dev. to pond
CN Post Developed = 73 (SCS) composite value determined as follows:
+/- 143,951 sf of impervious surface (CN = 98)
+/- 74,796 sf of soils are A, open space -good cond. (CN = 39)
+/- 75,377 sf of soils are B, open space -good cond. (CN = 61)
+/- 9,760 sf of soils are B, open space -good cond. (CN = 61)
(143,951 x 98 + 74,796 x 39 + 75,377 x 61 + 9,760 x 61) / 303,884 = 73.4
USED CN = 73
Area = 303,884 sf or 6.98 acres
Hydraulic length = 629 ft
Basin slope = 2.1 %
Qmax for post-dev 1-yr/24-hr storm = 4.85 cfs
Qmax for post-dev 10-yr/24-hr storm = 14.85 cfs
- Routed site —areas draining to pond routed through pond (see hydrograph summary & reports):
Qmax for post -route 1-yr/24-hr storm = 0.21 cfs
Qmax for post- route 10-yr/24-hr storm = 2.61 cfs
A
Coastal Site Daslgn, PC
P.O. Box 4041
WilmingM NC 29408

SUMMARY:
Qmax for routed post-dev. 1-yr/24-hr storm = 0.21 cfs < 0.43 efs... O.K
Qmax for routed post-dev. 10-yr/24-hr storm = 2.61 cfs < 6.60 efs... OX
A
Ceaata! site Des!gn, PC
P0. Box 4041
Wilmington, NO 28406

P-634 WET DETENTION BASIN CALCULATIONS
DETERMINE IMPERVIOUS PERCENTAGE
area to basin =
303.884
sf
6.98
acres
buildings =
26,620
at
0.61
acres
paved area =
93,883
sf
2.16
acres
sidewalks=
17,975
at
0.41
acres
gravel access =
5,473
sf
0.13
acres
total impervious surface =
143,951
sf
3.30
total non -impervious surface =
159,933
sf
3.67
acres
acres
percent imp. = 47.4
DETERMINE REQUIRED SURFACE AREA
from 90 % TSS Removal Chart:
@ depth = 3 fl
m 0
SA DA
40
4.5
47.4
x
50
5.6
x =
5.31
minimum surface area
0.0531 x 303,884 sf
=
16,138 sf
surface area provided = 21,654 sf @ elevation 11.5
1.5' VOLUME DETERMINATION:
DETERMINE RUNOFF COEFFICIENT IRv)
I = 47.4 percent impervious
Rv = ? (runoff coefficient, inches per inch)
Rv= 0.05 + 0.009 (1)
Rv= 0.48 infin
DETERMINE VOLUME
design storm = 1.5 inch
Rv= 0.48 infn
drainage area = 6.98 acres
volume=
volume = (design storm)(Rv)(drainage area)
volume = 0.4 acre-ft
volume = 18,094 cf of required storage volume
COASTAL SITE DESIGN, PC
PO BOX 4041
W ILMINGTON, NC 28406

WET DETENTION BASIN STAGE -STORAGE TABLE:
ELEVATION AREA
(FT) - (SF)
5 4449
6 5441
7 7,121
8 9,526
9 12,002
10 14,548
Bottom Shelf 11 17,163
PP 11.5 - 21,654
Top Shelf 12 26,304
State Storage 12.3 27,157
13 29,169
14 32,091
15 35,069
average pond depth =
volume at permanent pool (elev. 11.5) =
1.5" storage volume provided (elev. 12.3) =
total volume of basin =
surface area at bottom of 10:1 shelf ( 11) =
volume at bottom of 10:1 shelf =
surface area at top of 10:1 shelf (12) =
volume at top of 10:1 shelf =
minimum forebay volume =
FOREBAY #1 STAGE -STORAGE TABLE
INCREMENTAL
VOLUME STORAGE
(cf) (co
4,945
6,281
8,324
10,764
13,275
15,856
9,704
11,990
8,019
19.714
30,630
33,580
3.19 ft
69,148 cf
20,009 cf
168,136 cf
17,163 sf
54,499 cf
26,304 sf
76,193 cf
13,830 cf
11,990
20,009
39,723
70,353
103,933
INCREMENTAL
ELEVATION
AREA
VOLUME
STORAGE
(FT)
(SF)
(cf)
(cf)
7
289
8
1211
750
750
9
2208
1.710
2,460
10
3,277
2,743
5,202
11
4.420
3.849
-9,051
11.5
6,462
2,721
11,771
forebay volume provided =
11,771 cf
FOREBAY#2 STAGE -STORAGE TABLE:
INCREMENTAL
ELEVATION
AREA
VOLUME
STORAGE
(FT)
(SF)
(cf)
(cf)
8.5
205
9
441
323
323
10
969
705
1,028
11
1,566
1,268
2,296
11.5
2.700
1,067
3,362
forebay volume provided =
3,362 cf
COASTAL SITE DESIGN, PC
PO BOX 4041
W ILMINGTON, NC 28406

STAGE - DISCHARGE TABLE:
size of odfce(in)= 2.0
crest length of weir cut (ft) = 0.20
crest length of grates (sf) = 4.0
crest length of spillway (ft) = 40.0
ELEVATION 2"PVC WEIR
(ft) (cfs) (cfs)
11.5 0.00
12 0.07 -
13 0.13 0.39
14 0.17 1.46
.15 0.20 2.93
PVC DRAW DOWN
Orifice size= 2.0 in
Normal Pool Storage Elev. = 11.5
1.5" storage Elev. = 12.3
elevation ofonfce=
11.5
elevation of weir cut =
12.3
elevation of grates=
13.5
elevation of spillway =
14.0
GRATES SPILLWAY
TOTAL
(cfs) (cfs)
(cfs)
4.67
24.25
Orifice coefficient (C) = 0.6
Average head from 1.5'storage to orifice (h) = (12.3 -11.5) /2 =
Orifice cross sectional area (A) = pi x rA2 = 3.14 x (r/12)A2 =
Acceleration due to gravity (g) =
Q=CA (2gh)A1/2 = 0.6 x 0.02181 x (2x32.2x0.35)"1/2 =
20,009 / 0.06640 = 301,319 seconds =
120.00
0.40 1t
0.02181 sf
32.2 f /SA2
0.06640 cfs
3.49 days
0.07
0.52
6.30
147.37
COASTAL SITE DESIGN, PC
PO BOX 4041
WILMINGTON, NC 28406

Pond .Report
Hydraflow Hydrographs by Intelisolve v9.1
Pond No. 1 - P-634 POND
Pond Data
Contours - User -defined contour areas. Conic method used for volume calculation. Begining Elevation = 11.50 ft
Stage / Storage Table
Stage (ft)
Elevation (ft)
0.00
11.50 -
0.50
12.00
1.50
13.00
2.50
14.00
3.50
15.00
Contour area (sqft)
21,654
26,304
29,169
32,091
35,069
Incr. Storage (cuft)
0
11,969
27,721
30,615
33,566
Total storage (cult)
0
11,969
39,691
70,306
103,872
Thursday, Nov 20, 2008
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A]
[B]
[C]
[D]
Rise (in) = 18.00
2.00
0.00
0.00
Crest Len (ft)
= 4.00
0.20
40.00
0.00
Span (in) = 18.00
2.00
0.00
0.00
Crest El. (ft)
= 13.50
12.30
14.00
0.00
No. Barrels = 1
1
0
0
Weir Coeff.
= 3.33
3.33
2.60
3.33
Invert El. (ft) = 11.50
11.50
0.00
0.00
Weir Type
= Riser
Rect
Broad
Length (ft) = 31.00
1.00
0.00
0.00
Multi -Stage
= Yes
No
No
No
Slope (%) = 0.30
0.00
0.00
n/a
N-Value = .013
.013
.013
n/a
Orifice Coeff. = 0.60
0.60
0.60
0.60
ExFI.(in/hr)
= 0.000 (by Contour)
Multi -Stage = n/a
No
No
No
TW Elev. (ft)
= 0.00
Note: Coverforifce
Stage / Storage / Discharge Table
outflows are analyzed under inlet (ic) and outlet (oc) control. Weir users checked far
orifice conditions
(to) and submergence (a).
Stage Storage Elevation
ft
Clv A
Clv B- Clv C
PrfRsr Wr A
Wr B
Wr C
Wr D
Exfil User
cuft ft
cfs
cfs cfs
cfs cis
cfs
cfs
cfs
cfs cfs
Total
cfs
0.00 _ 0 11.50
0.50 11,969 12.00
0.00
0.00
0.00 -
0.07 is
- 0.00
0.00
0.00
-
- -
0.00
1.50 39,691 13.00
0.00
0.13 is
_ 0.00
0.00
0.00
0.39
0.00
-
- -
0.07
2.50 70,306 14.00
4.71 oc
0.16 is
4.71
1.48
0.00
0.00
-
- -
0.52
3.50 103,872 15.00
6.59 oc
0.19 is -
- 6.59 is
2.95
104.00
-
- --
6.35
-
- -
113.73
4kCoastal Site Design, PC
P.O. BOX 4041
Wilmington, NC 28406

Hydrograph Summary Report
Hydraflow H dro ra hs b i t IiI
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Hyd.
volume
(cult)
Inflow
hyd(s)
MaximumEstrge
elevation
(ft)
d
Y g p y neso ve v9.1
Hydrograph
description
1
SCS Runoff
0.433
5
760
6,534
--
-----
----
Pre_dev
2,
SCS Runoff
4.849
5
745
35,642
—
—
---
Post_Dev
3
Reservoir
0.209
5
1355
35,070
2
12.59
28,285
Routed
Coastal Site Design, PC
"o PO. Box 4041
W11hington, PIC 28406
P-634_POND.gpw
Return Period: 1 Year
Thursday, Nov 20, 2008

Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.1
Hyd. No. 1
Pre_dev
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 5 min
Drainage area
= 6.980 ac
Basin Slope
= 3.6 %
Tc method
= LAG
Total precip.
= 3.83 in
Storm duration
= 24 hrs
Q (cfs)
0.5('
0.4E
0.4C
0.35
0.30
0.25
0.20
0.15
0.10
0.05
Awl,
Pre_dev
Hyd. No. 1 -- 1 Year
Thursday, Nov 20, 2008
Peak discharge = 0.433 cfs
Time to peak
= 760 min
Hyd. volume
= 6,534 cuft
Curve number
= 49
Hydraulic length
= 333 ft
Time of conc. (Tc)
= 15.92 min
Distribution =
Type III
Shape factor =
242
Q (cfs)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0 120 240 360 480 600 720 840 '960 1080 1200 1320 1440 15600.00
Hyd No. 1 Time (min)
Coastal Site Design, PC
P.O. Box 4041
Wilmioglon, PlC 28406

Hydrograph Report
HydraFlow Hydrographs by Intelisolve v9.1
Hyd. No. 2
Post_Dev
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 5 min
.Drainage area
= 6.980 ac
Basin Slope
= 2.1
Tc method
= LAG
Total precip,
= 3.83 in
Storm duration
= 24 hrs
Q (cfs)
5.0(
W,
3.00
2.00
1.00
0.00
�Iw 0ou 4ou duo (20 840
Hyd No. 2
Post_Dev
Hyd. No. 2 -- 1 Year
Thursday, Nov 20, 2008
Peak discharge = 4.849 cis
Time to peak
= 745 min
Hyd. volume
= 35,642 cuft
Curve number
= 73
Hydraulic length
= 629 ft
Time of conc. (Tc)
= 18.63 min
Distribution
= Type III
Shape factor
= 242
Q (cfs)
5.00
4.00
M
2.00
1.00
J.00
960 1080 1200 1320 1440 1560
Time (min)
Coastal Site Design, PC
P.O. Box 4041
NJilmino;on, A'; ?cg0g

Hydrograph Report
Hydraflow Hydrographs by Intelisolve v9.1
Hyd. No. 3
Routed
Hydrograph type
= Reservoir
Storm frequency
= 1 yrs
Time interval
= 5 min
Inflow hyd. No.
= 2 - Post Dev
Reservoir name
= P-634 PO_ND
Storage Indication method used.
Q (cfs)
5.00
4.00
3.00
2.00
1.00
0.00
Thursday, Nov 20, 2008
Peak discharge = 0.209 cfs
Time to peak
= 1355 min
Hyd. volume
= 35,070 cuft
Max. Elevation
= 12.59 ft
Max. Storage
= 28,285 cuft
Routed
Hyd. No. 3 -- 1 Year
Q (cfs)
5.00
4.00
3.00
2.00
1.00
uwfll _
1500 3000 4500 6000 7500 9000 10500 12000 13500 15000
- Hyd No. 3 — Hyd No. 2 Ell,J f ii l Total storage used = 28,285 cult Time (min)
Coastal Site Design, PC
P.O. Box 4041
Wilmington, NC 26406

Hydrograph Summary Report

Hydrograph Report
Hydraflow Hydrograp hs by Intel isolve v9.i
Hyd. No. 1
Pre dev
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 5 min
Drainage area
= 6.980 ac
Basin Slope
= 3.6 %
Tc method
= LAG
Total precip.
= 7.22 in
Storm duration
= 24 hrs
Q (cfs)
7.00 -
M
5.00
IIo
3.00
2.00
1.00
M
Pre_dev
Hyd. No. 1 -- 10 Year
icU 44v ooU 4oU 6UU (20 840
--- Hyd No. 1
Thursday, Nov 20, 2008
Peak discharge = 6.656 cfs
Time to peak
= 745 min
Hyd. volume
= 44,375 cuft
Curve number
= 49
Hydraulic length
= 333 ft
Time of conc. (Tc)
= 15.92 min
Distribution
= Type III
Shape factor
= 242
Q (cfs)
7.00
5.00
4.00
3.00
2.00
1.00
960 1080 1200 1320 1440 1560 0.00
Time (min)
Coastal Slte Design, PC
P0, BOX4041
Wilming on, NC 26406

Hydrograph Report
Hydranow Hydrographs by Intelisolve v9.1
Hyd. No. 2
Post Dev
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 5 min
Drainage area
= 6.980 ac
Basin Slope
= 2.1
Tc method
= LAG
Total precip.
= 7.22 in
Storm duration
= 24 hrs
12.00
• 11
. 11
CIO
ON
Post_Dev
Hyd. No. 2 -- 10 Year
- — --- ��� vvv rtu 64U 960
--- Hyd No. 2
Thursday, Nov 20, 2008
Peak discharge
= 14.85 cfs
Time to peak
= 745 min
Hyd. volume
= 104,531 cult
Curve number
= 73
Hydraulic length
= 629 ft
Time of conc. (Tc)
= 18.63 min
Distribution
= Type III
Shape factor =
242
Q (cfs)
15.00
12.00
• 11
C 11
1080 1200 1320 1440 1560J 00
Time (min)
Conti Site Design, PC
P.0 Box 4041
Wilmington, NO 28406

Hydrograph Report
Hydranow Hydrographs by Intelisolve v9.1
Hyd. No. 3
Routed
Hydrograph type
= Reservoir
Storm frequency
= 10 yrs
Time interval
= 5 min
Inflow hyd. No.
= 2 - Post_Dev
Reservoir name
= P-634 POND
Storage Indication method used.
12.00
• e,
. ��
3.00
win,
Routed
Hyd. No. 3 -- 10 Year
a UV dUUU
Hyd No. 3 — Hyd No. 2
Peak discharge
Time to peak
Hyd. volume
Max. Elevation
Max. Storage
Thursday, Nov 20, 2008
= 2.605 cfs
= 835 min
= 103,855 cuft
= 13.71 ft
= 61,551 cuft
Q (cfs)
15.00
12.00
• 11
3.00
4500 5400 6300 7200 8100 9000J 00
9= Total storage used = 61,551 cult Time (min)
CO.'stai Site Design, PC
�k P.O. Eox 4041
Wilmington, NC 28406

1 x�
CAnCLIN
2791(
mor
� Dem
-ECS
Norf
Inelc
•, I
pany,, JjjC
isa 77�71�
Smmary, of =='boring location
'T S...�44;;�..
hreerequested
ad area.;, ECS.
xistin g &obnd.
andobtained
vation.. Below
,6n(fifions and
erg] Imitp. 'd r.6m ""
11111-c- -I' F-YG0. v M CIN U LIMe KIVeL � U

k
r
--— — —
— — ——
�i�Tll I I IITRT�TT'J I��
f TU
--- ,1
I I I ��; ;
oi�ii+Hiiiiiii�0 ,� o A.
li
it
I e
BORING LOCATIONS
BEQ P-632, 634, 636
New River Air Station, NC
Onslow County
ECS Project No. 22-14458A
October 16, 2008
KB W
Figure 1-Boring Location Plan
Provided by: Coastal Site Design

Onslow County, North Carolina
133
TABLE 15.--PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS --Continued
I I
Soil name and Depthl
map symbol I I
I I
Clay
I . I
I Moist (Permeability
I bulk I
I density I
1 '1
Availablel Soil
I water Ireactionl
Icapacity I
1 1 Erosion I
IShrink-swell I factors I
potential I I I
I I K I T I
Organic
matter
I In I.
Pot
I g/cc I
In/hr
I In/in I - pH
I
I
I I I I
Pot
I I
GpE*: I
Goldsboro-------1 0-131
5-15
I I
I
11.40-1.601
2.0-6.0
I
10.08-0.1214.5-6.0
I
[Low ---------- 10.201 5 1
.5-2
113-80.1
18-30
11.30-1.501
0.6-2.0
10.11-0.1514.5-5.5
ILow---------- 10:241
I
1
I
Urban land. I I
I
I
I
Gt --------------- 1 0-9 1
7-18
11.45-1.651
2.0-6.0
10.10-0.1414.5-7.3
ILow---------- 10.201 5
1 2-4
Grifton 1 9-451
18-35
11.35-1.451
0.6-2:0
10.12-0.1714.5-7.3
(Low ---------- 10.241
1
145-581
2-18
11.45-1.701
2.0-20..0
10.07-0.1415.6-8.4
(Low ---------- 10.201
1
158-801
---
--- I
---
-------------------I----I
I
- I I
KUB-------------- 1 0-901
0-3
I
11.60-1.601
6.0-20
I I
1 <0.05 14.5-7.3
(Low ---------- 10.101 5
<2
Kureb I
I
La --------------- 1 0-991
---
10.05-0.251
2.0-6.0
10.18-0.4516.1-8.4
ILow---------- I ---- I ---
1 30-70
Lafitte I
I
I
I
I I I
I
I I
Le --------------- 1 0-7 1
6-20
I I
11.30-1.501
0.6-2.0
I
10.14-0.1813.6-5.5
ILow--- ------- 10.371 5
1 2-4
Lenoir 1 7-801
35-60
11.20-1.351
0.06-0.2
10.13-0.1513.6-5.5
IModerate----- 10.321
1 1 1
1
1
1 1
Ln--------------- 1 0-171
1-6
1 1
11.40-1.651
6.0-20
1 1
I0.02-0.0513.6-5.5
ILow----------- 10.101 5
1 .5-4
Leon 117-511
.2-8
-11.50-1.701
0.6-6.0
10.05-0.10.13.E-5.5
ILow---------- ID-151
1
151-951
1-6
11.40-1.651
0.6-6.0
10.02-0.0513.6-5.5
(Low -------- --10.101
1 1 1
I 1
'Ly--------------- 1 0-131
5-20
1 1
11.30-1.601
2.0-6.0
1 1
10.09-0:1313.6-5.5
ILow---------- 10.201 5
1 .5-5
Lynchburg 113-801
18-33
11.30-1.501
0.6-2.0
10.12-0.1613.6-5.5
1 I
(Low ---------- 10.201
I I I
1
I
1 1
MaC---------- ---- 1 0-121
2-12
1 1
11.35-1.701
2.0-6.0
10.06-0.1114.5-6.0
(Low ---------- 10.171 4
1 <2
Marvyn 112-521
16-35
11.30-1.601
0.6-2.0
10.12-0.1714.5-6.0
1Low------- ---10.321
1
.152-751
10-30
11.40-1.601
0.2-2.0
10.01-0.1414.5-6.0
ILow---------- 10.321
I I I
1
I
I I
'Md--------------- 1 0-281
10-1B
I I
11.D0-1.301
2.0-6.0
I I
10.20-0.2615.6-7.8
(Low ---------- 10.101 5
1 6-20
Masontown 128-651
2-18
11.40-1.601
2.0-20--10'.02-0.1215.6-7.8
I
ILow---------- 10.101
I I I
1
I.
I I
Mk-- ------------- 1 0-401
10-25
I. I
1 --- 1
0.6-2.0
I
10.09-0.1515.1-7.3
ILow---------- 10.201 5
1 ---
Muckalee 140-751
5-20
.1 --`
-I
0.6-2.0
.10.08-0.1215.6-8.4
I
ILow---------- 10.201
I I I
1
I
1 1
Mu ---------------I 0-5 1
..
2-8
I
11.45-1.601
6.0-20
I
10.05-0.0913.6-5 :5
(Low ---------- 10.101 5
1 2-9
Murville 1 5-551
2-8
11.60-1.751
2.0-6.0
10.05-0.0913.6-5.5
ILow---------- 10.101
1
- 155-751
___
_I ___ I
___
I _-_ I ___
I
I_____________I____I
I
I
I . I
NeE, NfC--------- 1 0-801
---
I I
11.60-1.751
>20
I
1 <0.05 13.6-7.8
ILow---------- 10:101 5
1 ---
I
Newhan
I
I
I I
I
I I
I I I
I
I
NnE*:
Newhan------ ----1 0-801
---
11.60-1.751
'>20
1 <0.05 13.6-7.8
ILow---------- 10.101 5
I I I
1 ---
I
I I
Corolla --------- 1 0-721
0-3
I I
11.60-1.701
>20
.I0.01-0.0315.E-7.8
(Low----------10.101 5
1 <.5
Urban land.
I
I I I
I
I I
NoA, NoB--- ------ 1 0-101
2-8
I I
11.55-1.751
6.0-20
I
10.06-0.111.4.5-6.0
(Low ---------- 10.201 5
1 .5-2
Norfolk I10-471
18-35
11.30-1.451
0.6-2.0
10.10-0.2014.5-5.5 ILow---------- 10.241
1
147-801
1 1
20-43
11.10-1.401
1 -1
0.06-2.0
10.10-0.1514.5-5.5 (Low ---------- 10.241
I 1 1 I
1
See footnote at end
of table.
Site Design,
PC
Coastal
0. Box 4041
S'cilminglon, NC 28406

132
Soil Survey
TABLE 15.--PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS
(The symbol < means .less than; > means more than. Entries under "Erosion factors--T" apply to thIe entire
Profile. Entries under "Organic matter" apply only to the surface layer. Absence of an entry indicates
that data were not available or were not estimated)
oil
Soap name and IDepthl
I I
Clay
Moist (Permeability Available) Soil
(Shrink -swell I factors
I Organic
I I
( bulk I
I density 1
I water Ireact ionpotential I
I matte;
capacity
I K T I
I Zn I
Pet
g/cc I
In/hr
1: In/in I-
pH
I I I
P
0-131 0-131
AnBAlpin 113-481
- 1-12
11.35-1.551
2.0-6.0
1 1
10.05-0.1014.5-6.5
1 11
ILow-------- 10.101 5 1
0-2
148-801
1-7
5-8
11.40-1.551
11.45-1.651
6.0-20.0
10.03-0.0914.5-6.5
]Low ---------- 10.101 1
I
2.0-6.0
10.06-0.0914.5-6.5
ILow---------- 10.101
AuB"------------I 0-291
Autryvil le 120-241
2-10
SO-
11. 60-1.701
>6. 0
I I
10.04-0.0914.5-6.5
I 1 I 1
ILow---------- 10.101 5
138-531
2-8
11.40-1.601
11.60-1.701
2.0-6.0
>6.0
10.08-0.1314.5-5.5
ILow---------- 10.101
.5-1
153-991
10-35
11.90-1.601
0.6-2.0
10.03-0.0814.5-5.5
10.10-0.1514.5-5.5
(Law----------(0.101
I I
I
ILow---------- 10.171 1
B�-------------- l 0-301
Baymeade 130-561
0-6
8-26
I
11.60-1.751
6.0-20
I I
1 0.02-0.0614.5-6.5
(Low ---------- 10.101 5 1
0-12
11.45-1. 601
11.60-1.751
2.0-6.0
6.0-20
0.10-0.1914.5-6.5
(Low ---------- 0,10
.5-1
I56-801
10,02-0.1014.5-6..5
(Low ------ ---- 10.101
BmB*: I I
'I
I I
I I I I
Baymeade -------- 1 0-301
130-561
0-8
I
11.60-1.751
6.0-20
I I
10.02-0.0614.5-6.5
I I I I
(Low ---------- 10.101 5 1
156-801
8-26
0-12
11.45-1.601
11.60-1.751
2.0-8.0
6.0-20
0.10-0.19 4.5-6.5
Low----------
•5-1
(
10.02-0.1014.5-6.5
ILow------- --_10.101
10.101
Urban land.
I 1
Bo------- --------1 0-8 1
Bohicket 18-601
30-60
35-60
1
11.30-1.601
1.30-1.
0.06-0.2'
1
10.02-0.0616.1-8.9
1
(High --------- 10.281 5 1
5-25
. 38-60
------
601
1
<0 .06
10 .02-0.06 fi.1-8.9
1
(High---------10.241 1
1_____________1____I
I
Ca --------------- 1 0-651
Carteret �
5-12
1
11.45-1.60
I 1
>fi .0.
10.02-0.105. 6-8.4
I I
ILow---------- 10.151 5 1
.5-2
I
co---------- -----1 0-721
Corolla I I
0-3
I. 1,
11.60-1.701
1 1
>20
I I,
10.01-0.0315.6-7.8
I I
I I I
I
ILow---------- 10. 101 5 1
<.5
CrB, CrC---
Craven 1 0-6
18-481
6-20
35-60
1
1.30-1.551
0.6-2.0
I
10.12-0.1813.6-6.5
'I
ILow----------10.371 5
98-80i
5-35
11.30-1.451
0.06-0.2
0.2-6.0
10.12-0.1513.6-5.5
(Moderate ----- 10.321
.5-2
i1.35-1.60
10.08-0.1413.6-5.5
ILcw---------- 10.321 1
Ct --------------- 1 0-341
Croatan 34-901
0.-0.
8-20
10.40-0.651.
0.06-6.0
1 1
10.35-0.451 <4.5
I I
ILow-----------I--- 4
25-60
140-701
10-35
1.40-1. 60
11.40-1.601
0.2-6.0
0.2-2.0
10.10-0.1513.6-6.5
[Low----------1
170-801
---I
---
---
10.12-0.2013.6-6.5
I --- --------------------I
ILow---------- I____I I
I
Da--------------- I 0-9 1
Dorovan
___
.
10.25-0.401
0.6-2.0
10.25-0.5013.6-4.4
1.
I
1-------------
1 4-801
---
-
10.35-0.551
0.6-2.0
10.25-0.5013.6-4.4
1-------------I----I---
---
180-991
5-20
11.40-1.651
1.
6.0-20
10.05-0.0814.5-5.5
ILow---------- I --- -1
Dc---------------
-------I 0-601
Duckston I I
0-4,
I1. 60-1.701
I 1
>20
1
.10.02-0.0513.E-8.4
I 1
1 1'
ILow-------- --10.101 5 1
I
.5-1
I I
FOA---------- ( 0-8 P
Foreston 18-701
5-12
10-18
I I
11.20-1.401
6.0-20
I I
10.05-0.1014.5-6.5
I I I
I
ILow------- 10.101 5
170-801
4-12
.1.20-1.90
11.30-1.601
2.0-6.0
10.09-0.1314.5-5.5
----------
ILow
.5-2
II
I
6.0-20
10.03-0.1014.5-5.5
ILow---------- 10.101
GoA________ ____
Goldsboro -1 0-131
113-801
5-15
18-30
11.40-1.601
2.0-6.0
1 I
10.08-0.1214.5-6.0
I - I 1 1
ILow----- -----10.201 5 1
I I
11.30-1.501
I I
0.6-2.0
10.11-0.1519.5-5.5
I I
ILow----------10.241 I
I-
.5.2
See footnote at end of
-table.
I 1
Coastal S!Ie D0810s1 PC
P.O. Box 4041

134
TABLE 15.--PHYSICAL AND CHEMICAL PROPERTIES OF THE SOILS --Continued
Soil Survey
Soilmap name IDepthl
mbo aand
I I
Clay
Moist . (Permeability IAvailablel
Soil
(Shrink -swell I factors
I Or
I. I
I bulk I
I density I-
I water Ireactionl
potential
I matter
(capacity I
I I x. I T
I
I In 1.
Pot
I g/cc I
In/hr
I In/in
I
pH
_
Pct
On -------- ------ -1 0-101
Onslcw ILO-68.1
2-8
11.60-1.751
>6.0
10.07-0.1113.6-5.5
1
lLow----------10.171 4
1
1
15-35
11.30-1.501
0.6-2.0
10.12-0.1713.6-5.5
ILow---------- 10.241
I_____________I____I
.5-2
1
Pa --------------- 1 I
1 0-721
Pactolus
2-12
I
11.60-1.751
I l'
6.0-20
I
10.05-0.1014.5-6.0
I I
ILow----------1 -
10.101 5 1
I
5-2
Pn--------------- 1 0-141
114-451
5-15
18-3511.30-1.901
11.20-1.401
0.6-2.0,
10.20-0.3013.6-5.5
I I I
ILow---------- 10.101I 5 1
10-15Pantego
145-801
18-40
0.6-2.0
10.12-0.2013.E-5.5
(Low --- ------- 0.28
. .
015-0.2013.6-5.5
(Lo.----------0.281
Pt*.
Pits I
11
I
1
I I I
Ra--------------- I 0-12
Rains 112-451
5-20
1
11.30-1.60
2.0-6.0
10.10-0.1414.5-6.5
I I
ILow----------I I
10.201 5 1
1-6
145-801
18-35'
15-45
11.30-1.501
0.6=2.0
I0.10-0.1514.5-5.5
(Low-------- 10.281 1
1 1
11.30-1.601
1 1
0.6-2.0
10.10-0.1514.5-5.5
(Low ---------- 10.28f I
St --------------- 1 0-121
Stallings 112-801
2-10
5-18
1 1.5-1.6 1
6.0-20
I 1
10.06-0.1113.6-5.5
1
1 1 I 1
ILow--------__10.101 5 1
1-4
I I
_
1.9-1.6 I
i
2.0-6.0
0.10-0.1513.E-5
.5
(Low ------- --_IO'•171
To--------------- 0-191
Torhunta 114-471
5-18
5-18
11.35-1. 651
2.0-6.0
0.10-0.1513.E-5
.5
(Low ------- --_1 - I I
5
3-10
47-801
2-18
11.35-1.601
1.95-1. 65,1
2.0-6.0
6.0-20
10.10-0.1513.6-5.5
(Low-------___10.151
10.151
1
I' <0.05 13.6-6.5
ILow---------- 10.'101
Ud*. 1
I I
I !
Udorthents
Ur*,
Urban land l l
1
WIB ------ 7------- 1 0-6
Wando - 6-85
2-15
1-10
11.30-1.60
6.0-20
I I
10.05-0-0815.1-7.3
I I I
ILow---------- 0.101 5 1
<1
1.30-1.60I
6.0-2C
10.03-0.0714.5-7.3
(Low ---------- 10.101
_____
Wo--------__ 1 0-121
Woodington 112-801
2-10
I1.50-1.701
6.0-20
1
.0E-0.1113.fi-5.5
1011.45-1.651
_
(Law--------- 5
2-9
1 1
5-18
1 1
2.0-6.0
10.10-0.1513.6-5.5
ILow------____10.01
I0.201 1
YaA'-------------1 0-3 1
Yaupon 1 3-851
5-20
35-60
11.40-1.601
2.0-6.0
1
10.10-0.1514.5-6.5
1
ILow---------- 10•291
<1
1 1
11.30-1.501
1
<0.06
10.12-0.1819.5-8.4
.2
(High---- ----- 10.321 1
* See description of the map unit for composition and behavior characteristics of the map unit.
eCozstai Site Design, PC
sr P.O. Box 4041
-
* Vdilmingfon, NC 28406

Appendices
Table 8.03e Runoff curve numbers of urban areas'
Curve number for
Cover Description --------hydrologic soil group --------
Cover type and hydrologic condition Average percent A g C D
impervious areaz
Fully developed urban areas (vegetation established)
Open space (lawns, parks, golf courses, cemeteries, etc.) 3:
Poor condition (grass cover < 50%) ............................. 68 79 86 89
Fair condition (grass cover 50% to 75%) ..................... 49 69 79 84
Good condition (grass cover > 75%) ............................ 39 61 74 80
Impervious areas:
Paved parking lots, roofs, driveways, etc.
(excluding right-of-way) ............................................... 98 98 98 98
Streets and roads:
Paved; curbs and storm sewers (excluding
right-of-way) 98 98 98 98
Paved; open ditches (including right-of-way) ................ 83 89 92 93
Gravel (including right-of-way) ......._ ............................. 76 85 89 91
Dirt (including right-of-way) ........................................... 72 82 87 89
I
—' Urban districts:
Commercial and business ................................................. 85 89 92 94 95
Industrial........................................................................... 72 81 88 91 93
Residential districts by average lot size:
1/8 acre or less (town houses) ......................................... 65 77 85 90 92
1/4 acre............................................................................ 38 61 _75 83 87
1/3 acre ........... :................................................................. 30 57 72 81 86
1 /2 acre............................................................................. 25 54 70 80 85
1 acre .................... :.......................................................... 20 51 68 79 84
2 acres.............................................................................. 12 46 65 77 82
Developing urban areas
Newly graded areas
(pervious areas only, no vegetation) 4 .............................. 77 86 91 94
Idle lands (CN's are determined using cover types
similar to those in table 2-2c). Coast! Me Design, PC
PQ 0 AnAl
1. Average runoff condition, and la = 0.2S. WIIRI!n(T'1o0, NC 2W6
2. The average percent impervious area shown was used to develop the composite CN's. Other assumptions are as follows: impervious
areas are directly connected to the drainage system, impervious areas have a CN of 98, and pervious areas are considered equivalent
to open space in good hydrologic condition. CN's for other combinations of conditions may be computed using Figure 8.03c or 8.03d.
3. CN's shown are equivalent to those of pasture. Composite CN's may be computed for other combinations of open space cover type.
4. Composite CN's to use for the design of temporary measures during grading and construction should be computed using Figure 8.03c
or 8.03d based on the degree of development (impervious area percentage) and the CN's for the newly graded pervious areas.
Rev. 6/06
8.03.15

Appendices
Table 8.03g Runoff curve numbers for other agriculture lands'
Curve numbers for
--------------------------Cover description ----------------------------
--------------hydrologic
soil groups----------
HydrologicCover
type
conditions3
A
B
C
D
Pasture, grassland, or range—
Poor
68
79
86
89
continuous forage for grazing. 2
Fair
49
69
79
84
Good
39
61
74
80
Meadow —continuous grass, protected
—
30
58
71
78
from grazing and generally mowed for
hay.
Brush —brush -weed -grass mixture with
Poor
48
67
77
83
brush the major element. 3
Fair
35
56
70
77
Good
304
48
65
73
Woods —grass combination (orchard or
Poor
57
73
82
86
tree farm). s
Fair
43
65
76
82
Good
32
58
72
79
Woods. e
Poor
45
66
77
83
Fair
36
60
73
79
Good
304
55
70
77
Farmsteads —buildings, lanes,
—
59
74
82
86
driveways, and surrounding lots.
1 Average runoff condition, and la= 0.2S. .
2 Poor. <50% ground cover or heavily grazed with no mulch.
Fair: 50 to 75% ground cover and not heavily grazed.
Good: > 75% ground cover and lightly or only occasionally grazed.
3 Poor <50% ground cover.
Fair: 50 to 75% ground cover.
Good:>75% ground cover.
4 Actual curve number is less than 30; use CN = 30 for runoff computations.
5 CN's shown were computed for areas with 50% woods and 50% grass (pasture) cover. Other combinations of
conditions may be computed from the CN's for woods and pasture.
6 Poor: Forest litter, small trees, and brush are destroyed by heavy grazing or regular burning.
Fair: Woods are grazed but not burned, and some forest litter covers the soil.
Good: Woods are protected from grazing, and litter and brush adequately cover the soil.
Coastal Site Design, PC
6. P.0 BOX 4041
Wilmington, INC 26406
Rev. 6/06 -
x.o3.i7

POINT PRECIPITATION tt`"
FREQUENCY ESTIMATES z
FROM NOAA ATLAS 14
WILNUNGTON W50 AIRPORT, NORTH CAROLINA (31-9457) 34.2683 N 77.906I W 26 feet
from -Pmipi atm2-FMTmMq Atlas ofthe United Smam-NOAA Ades 14, Volume 2, Version 3
GM Bomm, D. Martin, B. Lm, T. Parrybok, M.Ydna, and D. Hey
NOAA, Nati ..I Weather Smiu, Silver Spring, Maryland, 2004 .
Emoted The Feb 5 2008
Estimates
Ilrvearslllrm�hrI4hrIhI � II?� II320 IImhllminllm,�IimIImII`II3tirII6hrI2'.-'4II 6D II
2
10
25
100
'These preopilation frequenq rsfirtmtes are named on a partial duration t " = AW ¢the Averge Remnence Interval.
Please refer a ha dom nmtio for more hdommtlon. NOTE Fmrrwldng hmms estimaes marram to appear as rem.
*
Precipitation
Upper
bound
of
Frequency
the 90%
confidence
Estimates
interval
(inches)
(ears)
min
min
min
min
min
min
hr
hr
hr
hr
hr
day
day
11
0.56
0.90
1.12
1.53
1.91
2.29
2.46
3.04
3.58 j
I
.27
.
5.02
5.68
6.46
day
7.27
day
9.65
I day
11.74
11 day 11
14.60
day
17.50
22
5�
0.66
0.78
1.06
1.24
1.33
1.57
1.84
2.24
2.31
2.87
2.79
3.56
2.98
3.81
9.69
4.73
4:33
5.59
5.19
6.71
6.08
7.80
6.85
8.68
7.79
9.79
8.7r
10.80
IL51
14.02
13.96
16.74
17.26
20.45
20.61
24.10
10,
0.87
1.39
1.75
2.54
3.31
4.21
4.54
5.64
6.69
8.03
9.29
10.25
11.46
12.53
16.07
18.99
23.03
2fi.85
25
50
0.98
1.06
1.56
1.69
1.97
2.14
2.92
3.23
3.89
4.37
5.14
5.95
5.61
6.58
6.99
820
8.37
9.87
10.07
11.90
11.58
13.61
12.60
14.64
13.97
15.99
15.07
17.22
19.05
21.55
22.10
24.73
26.61
29.-4
30.61
33.58
". 100
1:15
1.83
EE
3.53
4.87
6.84
7.64
9.55
11:58
13.98
15.91
16.93
18.28
19.54
24.21
27.39
32.47
36.58
200
1.24
1.96
2.47
3.85
5.40
7.80
8.81
11.09
13.52
16.38
18.56
19.49
20.80
22.09
27.11
30.19
35.58
39.58
500
1.35
2.14
2.69
4.28
6.14
9.28
10.64
13.46
16.57
20.18
22.64
23.42
24.61
25.94
31.26
34.19
39.86
43.67
1000
'
1.44
2.27
2.85
4.62
6.75
10.57
12.26
15.58
19.24
23.57
26.25
26.90
27.83
29.18
34.76
37.38
43.38
46.91
The upper
bound of
the confidence
irMrval
at 90%confidence
level ¢
the vdue
which 5%ot
d,e.imuuna
me yue=
M.,,a......._.___.
rem prerapaeoon "Quency mammas are bamedon a oarfial duratiterm. A on terRI is the Average Rcu errence IntewaL
Please refer to the dommenmfion fm more inlwroatloa NOTE: FormatEng prevents estimates near rem to appear am WM.
* Lower
bound
of
the 90%
confidence
interval
rs)
�in
m
min
min
min
Precipitation
min
rain
hr
Frequency
hr
hr
Estimates
hr
hr
(inches)
Fday
day
11
0.49
0.78
0.97
1.34
1,67
1.94
2.08
2.59
3:00
3.5E
4.Ib
4.73
5.49
day
6.22
day
8.37
day
10.37
daY
13.00
day
15.63
0.58
0.93
1.76
1.61
2.02
2.36
2:53
3.14
3.64
4.24
5.03
5.70
6:62
7.43
9.98
12.32
15.38
18.42
55
0.68
1.08
1.37
1.95
2.50
3.02
3.23
4.02
4.70 7
5.48
6.44
7.19
8.30
9.19
12.14
14.78
Egfl
21.53
30
0.75
1.20
1.52
2.21
2.87
3.56
3.53
4.78
L2j
6.56
7.64
8.45.
9.69
10.65
13.91
16.73
20.47
23.95
25
0.85
1.35
1.71
2.53
3.37
4.33
4.73
5.91
6.98
8.15
9.43
10.28
11.69
12.74
16.38
19.43
23.57
27.20
5,7
0.92
1.46
1.85
2.78
3.77
4: 99
5.51
6.90
8.21
9.56
10.97
11.83
13.32
14.45
15.35
21.54
25.94
29.67
100
0.98
1.57
1.98
3.03
4.17
5.7L
6.36
8.00
9.57
I1.10
12:63
13.52
15.06
16.23
20.41
2365
28.33
32.06
200
1.05
1.67
2.10
3.27
4.59
6.47
7.29
9.17
11:06
12.80
14.48
15.32
16.89
18.11
22.55
25.78
30.73
34.41

POINT PRECIPITATION `
FREQUENCY ESTIMATES g
FROM NOAA ATLAS 14 , ��°
WILbIINGTON WSO AMPORT, NORTH CAROLINA (31-9457) 34.2683 N 77.9061 W 26 feet
from "Precipeatlpn-Frequmry, Atlas of the United States" NOAA Atlas 14, Volume 2, Version 3
GM BOmlm D. Mar is B. Lin, T. Pwzybok, M.Yekro, and D. Riley
NOAA, National Weather Service, Silver Spring, Mmyland, 2004
Extracted: Mon Feb 4 2008
II *.II 5 II �o II 15 II 3o II 60 Jan4In u Mz.Fr;8nz3460
2
5
r i0
50
500
'These predpbfon hequencq esdmaRs me based on a ne@al duration sades ARI o fho Aver-lm Rewnence InterveL
Please referm the documentation for mare mfomiaton. NOTE Femmtdng forces estunates nearmm toappear m rem.
*
Upper
bound
of
the
90 %
confidence
interval
(years)�
min
�
min
Np
Precipitation
�
1min
hr
Intensity
hr
Estimates
hr
hr
(in/hr)
hr
day
day
a y
day
a r
a r
I 1
16.73
5.37
4.48
3.07
1.91
1.15
0.82
0.51
0.30
0.18 -
0.10
0.06
0.04
0.03
0.02
d3ay
0.02
0.01
0.01
2�
7.97
6.37
5.34
3.69
2.31
1.39
0.99
0.62
0.36
0?2
0.13
0.07
0.05
0.04
0.02
0.02
0.02
0.01
9.32
7.46
6.30
4.47
2.87
EH19T]EfIPE
0.28
0.16
0.09
0.06
0.04
0.03
0.02
0.02
0.02
10
30.39
8.32
7.01
5.08
3.31
2.10
1.51
0.94
0.56
033
0.19
0.11
0.07
0.05
0.03
0.03
0.02
0.02
25
11.72
9.34
7.89
5.84
3.89.
2.57
1.87
1.17.
0.69
OF427
00.24
0.13
0.08
0.06
EE
0.03
0.02
0.02
50
12.74
10.15
8.5E
6.45
4.37
2.98
2.19
1.37
0.82
0.50
OZ
0.15
0.10
0.07
0.04
0.03
0:03
0.02
100
13.79
10.96
9.23
7.07
4.87
3.42
2.54"
1.60
OF967
00.58
0.33
0.18
0.11
0.08
0.05
0.04
0.03.03
0
200
14.84
11.76
9.89
7.70
5.40
3.90
2.93
1.85
1.12
0.68,
0.39
0.20
0.12
0.09
0.06
0.04
0.03
0.03
500
16.22
12.83
10.77
8.57
6.14.
4.64
3.54
2.25
1.38
0.84
0.47
0.24
0.15
0.11
0.07
0.05
0.04
0.03
1000
17.33
13.E4
11.42
9.24
6.75
5.29
4.08
2.60
1.60
0.98
0.55
0.28
0.17
0.12
0.07
0.05
F.
0.03
•The upper
bound oftlie
wnfidenw
interval
el90%wlifidenw
leselsfhe
value
which
5% Dime
simulated
auardle
values
fora given
fmouenevmee
n,�ne,-
nesepraco moon rtequency esarnmes NO bates on a partial dW901 series ARI is the Average Rem ente lnlarval.
Please refer m the dowmente6on for more Wormafion. NOTE: Formatting prevents estimates new am to appear as ram.
*
Lower
bound
of
the
90%
confidence
interval
yh
min
min
min
min
Precipitation
min
m
Intensity
Estimates
hr
(in/hr)'
h
daydayday
day
ya(ears)
a
ny
a r
�1
5.86
4.68
3.90
2.67
1.67
0.97
0.69
0.43
0.25
0.15
0.09
0.05
0.03
0.03
0.02
0.01
0.01
0.01
22
6.95
5.55
4.65
3.21
2.02
1:18
0.84
0.52
0.30
0.18
0.10
0.06
0.04
0.03
0.02
0.02
0.01
0.01
8.14
6.51
5.49
3.90.
2.50
1.51
1.08
0.67
0.39
0.23
0.13
0.07
0.05
0.04
0.03
0.02
0.02
0.01
.10 -
9. 22
7.22
6.09
4.41
2.87
1.78
1.28
0.80
0.47
0.27
0.16
0.09
0.06
0.04
0.03
0.02
0.02
0.02
25
10.16
8.09
6.84
5.07
3.37
2.16
1.57
0.99.
0.58
0.34
0.20
0.11
0.07
0.05.
0.03
0.03
0.02
0.02
50
10.98
8.75
7.38
SS6
3.77
2.50
1. 33
1.15
0.68
0.40
0.23
0.12
0.06
0.06
0.04.
0.03
0.02
0.02
300.
11.82
9.40
7.92
6.06
4.17
2.85
2.12
1.34
0.79
0.46
0.26
0.14
0.09
0.07
0.04
0.03
0.03
0.02
F2007
12.61
10.00
8.41
6.55
4.59
3.24
2.43
1.53
0.92
0.53
0.30
0.16
0.10
0.08
0.05
0.04
0.03
0.02

APR-09-1996 16:15
FROM
EHNR WILM REG
OFFICE
TO
97624201 P.02
85% TSS REMOVAL
30 FOOT VEGETATED FILTER REQUMED
DEPTII
3'
3,5'
4.0'
4.5'
S.0'
5.5'
6.0'
6.5'
7.0'
7.5'
IIvip %
10 %
.9
.8
.7
.6
.5
0
0
0
0
0
20 %
1.7
1.3
1.2
1.1
1.0
.9
.8
.7
.6_
.5
30 %
2.5
2.2
1.9
1.8
1.6
1.5
1.3
1.2
1.0
.9
40 %
3.4
3.0
2.6
.2.4
2.1
1.9
1.6
1.4
1.1
1.0
50 %
4.2
3.7
3.3
3.0
2.7
2.4
2.1
1.8
1.5
1.3
60 %
5.0
4.5
3.8
3.5
3.2
2.9
2,6
2.3
2.0
1.6
70 %
6.0
5.2
4.5
4.1
3.7
3.1
2.9
2.5
2.1
1.8
80 %
6.8
6.0
5.2
4.7
4.2
3.7
3.2
2.7
2.2
2.0
90 %
7.5
6.5
5.8
5.3
4.8
4.3
3.8
3.3
2.8
1.3
100.%
8.2
7.4
6.8
6.2
5.6
5.0
4A
3.8
3.2
2.6
NO
VEGETATED
90% TSS
REMOVAL
FILTER
REQUIRED
%
"a RO
�' Plilmingfon,
3ZX4041
NC 264,6
DEPM
3'
3.5'
4.0'
4.5'
5.0'
5.5'
6.0'
6.5'
7,0'
7.5'
IMP %
10 %
20%
30 %
40 %
1.3
2.4
3.5
4.5
1.0
2.0
3.0
4.0
.8
1.8
2.7
3.5
.7
1.7
2.5
3.1
.6
1.5
2.2
2.8
.5
1.4
1.9
2.5
4
1.2
1.6
2.1
3
1.0
1.3
1.8
2
.9
1.1
1
.6
g
1.4
1.1
50 %
60 %
709b
80 %
90 %
100 %
5.6
7.0
8.1
9.4
10.7
12.0
5.0
6.0
7.0
8.0
9.0
10.0
4.3
5.3
6.0
.7.0
7.9
8.8
3.9
4,8
5.5
6.4
7.2
8.1
3.5
4.3
5.0
5.7
6.5
7.3
3.1
3.9
4.5
5.2
5.9
6.6
2.7
3.4
3.9
4.6
5.2
5.8
2.3
2.9
3.4
4,0
4.6
5.1
1.9
2.4
2,9
3.4
3.9
4.3
1.5
'1.9
2,3.
2.8
3.3
3.6

Camp Lejeune BEQ, MCAS P-634 Stormwater
Subject: Camp Lejeune BEQ, MCAS 11-634 Stormwater
From: Mary Jean Naugle <[e-mail]>
Date: Wed, 08 Oct 2008 14:25:51 -0400
To: Howard Resnik <[e-mail]>, Towler CIV David W
<[e-mail]>, Mary Naugle <[e-mail]>
Howard;
Please find attached information regarding our discussion this morning to
demonstrate the state storage volume is maintained on projects that propose the
permanent pool less than the SHWT. You need to demonstrate the draw down in the
presence of groundwater and the impacts from the downstream drainage area with
calculations, plans showing contours/drainage areas/area of influence, soil data,
etc...
If you have any questions, please call me.
Mary Jean Naugle
910-796-7303
DWQ - Wi RO
Content -Type: application/msword
Addinfo language for SHWT &fonds-Ldoc
Content -Encoding: base64
I of 1 10/8/2008 2:26 PM

Please address the following items regarding permanent pool relative to SHWT and
wetlands.
If the pond(s) is (are) proposed with a permanent pool elevation more than 6"
below the estimated Seasonal High Water Table; please consider raising the
permanent pool elevation to within 6" of the SHWT. If that cannot be done,
please provide the following information:
a) demonstrate that the downstream conveyances, including ditches
and pipes from the pond to the named receiving waters, will be able
to function adequately and maintain a free flow condition such that
the storage volume is released in 2-5 days under SHWT conditions;
and
b) provide calculations which quantify the amount of groundwater
expected to enter the pond under SHWT conditions based on soil
type and hydraulic conductivity; and
c) evaluate the orifice size to effectively deal with the incoming
groundwater such that the water level is maintained at the design
permanent pool elevation and such that the design storm volume is
allowed to exit the pond in 2-5 days.
2. In locations where there are wetlands adjacent to stormwater ponds, whose
grade is more than 6" above the permanent pool level of the adjacent pond,
there is a potential for the pond to drain the wetlands. Please provide sufficient
natural or artificial measures to block the movement of underground water
between them such that the water table in the wetlands is not adversely
lowered.

lo�g�o�
f3ym—rrrvErar�
%�owcctc�esa,:�t
`ramp
u:U_) \GcSh�O_✓_�H
J� 1.ZNIo(vs
�Q ;� 1 ocJlct�
3o3=z3o- a� f
310
43'77
Q(n �g-SSgs
33'!0-735�
CIO) `/SI- 3238 cF/-3z8y
CAu F�h�firk�
��CC%e�euh_e_
'p�

For DENR Use ONLY
North Carolina Department of Environment and Reviewer: Ky
© � A Natural Resources Submit to-6
i f Request for Express Permit Review Time: 1011-1
NCDENR
Confirm C1 "
FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. FAX or Email the completed form to Express
Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity map (same items expected in the application package
of the project location. Include this form in the application package.
OCT 8
• Asheville Region -Alison Davidson 828-296-4698;alison.davidson(a)ncmail.net
• Fayetteville or Raleigh Region -David Lee 919-791.4203; david.lee(a)ncmail.net k E C E I V E w1
• Mooresville & -Patrick Grogan 704-663.3772 or patrick.grogan(ftcmail.net EUUY11lU(III U
• Washington Region -Lyn Hardison 252-946-9215 or Ivn.hardison(c ncmail.net • Wilmington Region -Janet Russell910-350-2004 or janeLrussell(a)ncmail.net SEP 2 4 2008
NOTE: Project application received after 12 noon will be stamped in the following work day. DWO
PROJ ri
Project Name: BACHELOR ENLISTED QUARTERS, MICAS P-634 ; County: ONSLOW
Applicant: CARL BAKER Company: MARINE CORPS BASE, CAMP LEJEUNE
Address: BLDG 1005 MICHAEL ROAD City: MCB CAMP LEJEUNE, State: NC Zip: 28547
Phone:[phone] Fax:[phone] Email: cad. h.baker(a)usmc.mil t► ��S
Project is Drains into C:NSW waters Project Located in WHITE OAK River Basin
Engineer/Consultant: Howard Resnik Company: Coastal Site Design, PC i` `kerlsE
Address: P.O. BOX4041 City: WILMINGTON, State: NC Zip: 28406
Phone: [phone] Fax::[phone] Email: howard(a.coastalsitedesign.com G
(Check all that apply)
® Scoping Meeting ONLY ® DWQ, ❑ DCM, ❑ DLR, ❑ OTHER:
❑ Stream Origin Determination: # of stream calls — Please attach TOPO map marking the areas in questions
® State Stormwater ❑ General ❑ SFR, ❑Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility
❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ElOff-site[SW (Provide permit #)]
® High Density-Detenti6h Pond 1 #�reatment Systems El High Density -Infiltration _ #Treatment Systems
❑ High Density -Bio-Retention _ # Treatment Systems El High Density —Constructive Wetlands _ # Treatment Systems
❑ High Density -Other _ # Treatment Systems ❑ MODIFICATION SW _ (Provide permit #)
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
® Land Quality ® Erosion and Sedimentation Control Plan with 8.83 acres to be disturbed.(CK # (for DENR use))
WETLANDS QUESTIONS MUST BE ADDRESSED BELOW
® Wetlands (401): Check all that apply Isolated wetland on Property ❑ Yes ® No
Wetlands on Site ❑ Yes ® No Buffer Impacts: ❑ No ❑ YES: acre(s)
Wetlands Delineation has been completed: ❑ Yes ❑ No Minor Variance: ❑ No ❑ YES
US ACOE Approval of Delineation completed: ❑ Yes ❑ No Major General Variance ❑ No ❑ YES
404 Application in Process w/ US ACOE: ❑ Yes ❑ No 401 Application required: ❑Yes ❑ No If YES, ❑ Regular
Permit Received from US ACOE ❑ Yes ❑ No Perennial, Blue line stream, etc on site ❑ yes ❑ No
For DENR use only
Fee Split for multiple permits: (Check # 1 Total Fee Amount $
SUBMITTAL DATES
Fee
I SUBMITTAL DATES
Fee
CAMA
$
Variance ❑ Ma'; ❑ Min)
$
SIN ❑ HD, ❑ LD, ❑ Gen
$
401:
$
LQS
$
Stream Deter,_
$
CO�'rCd 1�0 1'?J'0,'ck'0' d^ C�-ZS 06

LEGEND
- - - - PROJECT BOUNDARY
CONTOUR LINE
PRELIMINARY PLAN for
BACHELOR ENLISTED OUAMERS, MCAS P-634
�" - �T - - 7--
SEP 2 4 2008
Pr^loi u
DWQ

COASTAL SITE DESIGN, PC
PO Box 4041
Wilmington, NC 28406
Phone: [phone]
Fax: [phone]
FOR EROSION AND SEDIMENT CONTROL EXPRESS REVIEW
PROJECT NAME: Bachelor Enlisted Quarters, MCAS P-634
MCB Camp Lejeune, NC
Onslow County
PROJECT DESCRIPTION: The purpose of this project is for the construction of barracks and a parking lot located on
the Marine Corps Air Station Base at Camp Lejeune. The erosion and sedimentation control measures to be implemented
onsite will include a gravel construction entrance, inlet protection, silt fencing, and a sediment basin. The sediment basin
will be the primary measure for controlling onsite runoff.
This site is located off of Douglas Road. The project will disturb approximately 8.83 acres. The site slopes of to the
southwest. It is bordered to the north by Douglas Road. The remaining three sides are bordered by Marine Corps
property.
STORMWATER ENGINEER/CONSULTANT: Coastal Site Design, PC
PO Box 4041
Wilmington, NC 28406
Rodney Wright
[e-mail]
910 791 4441 office
910 791 1501 fax
(�E C E I V ED
SEP 2 4 2008
p, ntr,

PROJECT NAME:
COASTAL SITE DESIGN, PC
PO Box 4041
Wilmington, NC 28406
Phone: [phone]
Fax: [phone]
FOR'STORMWATER EXPRESS REVIEW
Bachelor Enlisted Quarters, MCAS P-634
MCB Camp Lejeune, NC
Onslow County
PROJECT DESCRIPTION: This project is for the construction of barracks and a parking lot located on the Marine Corps
Air Station Base at Camp Lejeune. The owner is the United States Marine Corps. There are no wetlands'located within
the project area of the development. Water and sewer will be provided and treated by the base.
Stormwater from the site will drain into C;NSW waters located in the White Oak River Basin (Index # 19-17-(0.5)). The
project will be high density utilizing a wet basin as treatment for runoff. This project will be subject to NPDES Phase Ilp
requirements. Proposed impervious for the site is 44.5%. Since this project is high density all water from impervious
surfaces will be collected and treated through the wet basin. The project will have direct access onto Douglas Road.
PROJECT BMP: high density detention pond.
STORMWATER ENGINEER/CONSUI: rANT:
Coastal Site Design, PC
PO Box 4041
Wilmington, NC 28406
Rodney Wright
[e-mail]
910 791 4441 office
910 791 1501 fax
p5E_CEIvED
SEP 2 4 2008
DWG
PROJ #

LOCATION MAP
SITE
CURDS ROAD
NOT TO SCALE
7�-
v
O
=
m
m n
a
N m
cz
coH
m