SW8080907_HISTORICAL FILE_20100407

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STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 gc:rl©q d:
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2-01c) 007
YYYYMMDD

Central Files: AP5 SWP
04/07/10
Permit Number SW8080907
Permit Tracking Slip
Program Category
Status Project Type
State SW
Active Major modification
Permit Type
Version Permit Classification
State Stormwater
1.10 Individual
Primary Reviewer
chris.baker.
Coastal SW Rule
Coastal Stormwater - 2008
Permitted Flow
Facili
Permit Contact Affiliation
Facility Name Major/Minor Region
AAV Company Camp Lejeune Minor Wilmington
Location Address County
Courthouse Rd Onslow
Camp Lejeune NC 28547 Facility Contact Affiliation
Owner Name
Owner Type
Commanding Officer US Marine Corps - Camp Lejeune
Government - Federal
Owner Affiliation
Carl H. Baker
Psc Box 20004
Camp Lejeune NC 285420004
Dates/Events
Scheduled
Orig Issue App Received Draft Initiated Issuance
Public Notice Issue Effective Expiration
10/08/08 03/29/10
04/07/10 04/07/10 10/08/18
Regulated Activities
Reauested/Received Events
State Stormwater - HD - Sand fillers
Deed restriction requested
Deed restriction received
Outfall NULL
Waterbody Name
Stream Index Number Current Class Subbasin

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[Division sponsoring project]
Information Technology
Procedures for Surplus Computer Property
• Name of the individual who verified electronic media degaussed, removed or
permanently destroyed all electronic data from the surplus computer property
• Date electronic data degaussed, removed or permanently destroyed from the electronic
storage media.
• State Surplus Document Number,
3. DENR divisions will submit all State Surplus System documents containing computer
property for review to the DENR ITS Solution Center (DENRITS) through the State
Surplus web based system.
4. Division IT staff will affix to each surplus computer a DENR ITS label (Green Label)
containing the
• Fixed Asset Number (FAS) or the Serial Number if the FAS number is not visible,
• The date the electronic data permanently removed or destroyed from the electronic
media
The method used to remove or destroy the data
The date the verification performed
The name of the person performing the verification.
S. DENR divisions will release all surplus computer property to the State Surplus System in the
usual manner. Computer components capable of storing data on electronic storage media will
be released ONLY after verifying that all are appropriately labeled, listed on the State
Surplus System document, and recorded on a DENR Surplus Computer log.
6. Removal of electronic storage media (i.e. Hard Drives) from any computer to comply with
this procedure should be performed only if the available standard software cannot render the
media void of data. These media that are removed must be degaussed or destroyed, labeled
(Green Label), and submitted to the State Surplus Computer Warehouse.
7. DENR divisions will secure and store surplus computer property until a date is established
and the property to be turned over to the State Surplus System_
8. DENR divisions will ensure that all business units process surplus computer property in
compliance to these procedures.
• DENR- Information Technology Service
1. Designated Information Technology Service staff will review all DENR surplus computer
property entered into the State Surplus System web based application.
2. Designated Information Technology Service staff will release State Surplus System
documents with surplus computer peripheral property (computer components other than
those capable of storing electronic elata) properly entered on a separate document from all
other property to the DENR Surplus Administrator without delay.
3. Designated Information Technology Service staff will release State Surplus System
documents with computer components capable of storing data on electronic storage media
(i.e. Hard Drives) properly listed and submitted after verifying that each item on the State
Surplus System document is on the DENR Surplus Computer log received from the division.
Prpcedures for Surplus Computer Property 3 3/26/2010
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State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Beverly Eaves Perdue, Governor FAX COVER SHEET Dee Freeman, Secretary
Date: 'V`d / No. Pages (excl. cover):
To: 4:��A2Z- I ---I From: Jo Casmer
Co: �� ��'/n G�� Phone: [phone] --
Fax: 9iD ' ` �9� Fax: [phone]
Re: ,Sw Y e9
127 Cardinal Drive Extension, Wilmington, NC 28405 a [phone] + An Equal Opportunity Affirmative Action Employer

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[Division sponsoring project]
Information Technology
Sponsor
Procedures for Surplus Computer Property
The DENR ITS Management (for Computer related property) and DENR purchase and Services
Management (as DENR Surplus Property Administrator) are approvers of the DENR Surplus
Computer procedures.
Administrative Support
The DENR Solution Center Staff will provide support for matters that relate to Surplus
Computer Property.
Procedures for Surplus Computer Property 4 3/26/2010
r daj

State of North Carolina
MbDepartment of Environment and Natural Resources
Wilmington Regional Office
Beverly Eaves Perdue, Governor FAX COVER SWEET Dee Freeman, Secretary
Date: No. Pages (excl. cover):
To: �ELJ/� GElSI From: Jo Casmer
Co: Phone: [phone]
Fax: _� 9// �s 7 Fax: (910)35,0-2004
Re:
127 Cardinal Drive Extension, Wilmington, NC 28405 a [phone] • An Equal Opportunity Affirmative Action Employer

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
April 7, 2010
Carl Baker, Deputy Public Works Officer
United States Marine Corps, Camp Lejeune
Building 1005 Michael Road
MCB Camp Lejeune, NC 28547
Subject: Stormwater Permit No. SW8 080907 MOD
AAV Company
High Density Project
Onslow County
Dear Mr. Baker:
Dee Freeman
Secretary
The Wilmington Regional Office received a complete, modified Stormwater Management Permit
Application for AAV Company on March 29, 2010. Staff review of the plans and specifications has
determined that the project, as proposed, will comply with the Stormwater Regulations set forth in
Title 15A NCAC 2H.1000. We are forwarding modified Permit No. SW8 080907 dated April 7, 2010,
for the construction of the subject project.
This permit shall be effective from the date of issuance until October 8, 2018, and shall be subject to
the conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right
to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer
27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and
binding.
If you have any questions, or need additional information concerning this matter, please contact Chris
Baker, or me at [phone].
Sincerely,
korgette Scott
Stormwater Supervisor
Division of Water Quality
GDS/csb: S:IWQSISTORMWATIPERMITi080907MOD. apr1Q
cc: Sean Gleason, P.E., Earth Tech
Chris Baker
Wilmington Regional Office Stormwater File
Central Files
Wilmington Regional Office One
127 Cardinal Drive Extension, Wilmington, Nodh Carolina 28405 NorthCarol i na
Phone: [phone] FAX: 910,350-20041 Customer Service: 1-877-623.6748
Internet: www.ncwaterquality.org ,/V/7J 11fr17111/

State Stormwater Management Systems
Permit No. SW8 080907 MOD
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
Carl Baker and United States Marine Corps, Camp Lejeune
AA Company
Courthouse Road, Onslow County
FOR THE
construction, operation and maintenance of five (5) sand filters in compliance with the
provisions of 15A NCAC 2H A 000 (hereafter referred to as the "stormwater rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Water Quality and
considered a part of this permit.
This permit shall be effective from the date of issuance until October 8, 2018, and shall
be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
controls 1, 2, 3, 4, and 5 have been designed to handle the runoff from 25,066 sf
BUA (sand filter #1), 13,292 sf BUA (sand filter #2), 13,537 sf BUA (sand filter
#3), 25,064 sf BUA (sand filter #4), and 23,217 sf BUA (sand filter #5) of
impervious area, respectively.
3. The tract will be limited to the amount of built -upon area as indicated in Sections
1.2 and 1.6 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 areas of this
project must be directed into the appropriate permitted stormwater control
system.
Page 2 of 7

State Stormwater Management Systems
Permit No. SW8 080907 MOD
6. The following design criteria have been provided in the sand filters and must be
maintained at design condition:
b l'' '4 "" 7 "
Sand
Sand
Sand
Sand
Sand
_
l, .f t4 i � Af �
Filter #1
Filter #2
Filter #3
Filter #4
Filter #5
Drainage Area, acres:
0.58
0.62
0.38
0.59
0.54
Onsite, ft2:
25,390
26,932
16,024
25,884
23,468
Offsite, ft2:
None
!None
None
None
None
Total Impervious
Surfaces ft2:
25,066
13,292
13,537
25,064
23,2W
Design Storm, inches:
3.7
3.7
3.7
3.7
3.7
Water Quality Volume, ft :
7,551
3,361
3,328
7,421
6,232
Sand Filter Type:
Open
Closed
Closed
Open
Closed
Sand Filter
Bottom Elevation, ft:
8.7
6.0
8.0
9.04
7.5
SHWL ft:
6.5
4.0
5.5
6.24
6.5
Surface Area @ design
Elevation,
Sed. Basin (As), ft2:
2,270
384
336
1,057
854
Sand Filter AF , ft2:
2,250
1,504
1,992
3,123
2,262
Filter Permeability, ft/day:
3.5
3.5
3.5
3.5
3.5
Drawdown Time, hrs:
23
15.3
11.5
22.6
18.9
Receiving Stream/River
New RiverlWhite Oak
Basin:
Stream Index Number:
19- 72
Classification of Water
SA HWQ
Sod
7. No direct discharges to SA waters are allowed. The runoff exiting each sand filter
must be directed to a vegetated buffer and must be effectively infiltrated prior to
reaching surface waters.
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 times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in its
entirety and maintenance must occur at the scheduled intervals including, but not
limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowin.9 and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, filter media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 080907 MOD
4. Records of maintenance activities must be kept and made available upon
request to authorized personnel of DWQ. The records will indicate the date,
activity, name of person performing the work and what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
6. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received
from an appropriate designer for the system installed certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
7. 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.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
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.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. 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.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 080907 MOD
Ill. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. At least 30 days prior to a change of ownership, or a
name change or the permittee or of the project, or a mailing address change, the
permittee must notify the Division by submitting a completed and signed
Name/Ownership Change form to the Division of Water Quality, accompanied by
the necessary documentation as listed on the form. 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. Neither the sale of the project
area in whole or in part, nor the conveyance of common area to a third party shall
be considered an approved permit transfer.
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 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.
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.
Permit issued this the 7th day of April, 2010.
NO TH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
taruoleenAl. Sullins, uirector
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

State Stormwater Management Systems
Permit No. SW8 080907 MOD
AAV Company
Stormwater Permit No. SW8 080907 MOD
Onslow County
Designer's Certification
I, , as a duly registered in the
State of North Carolina, having been authorized to observe (periodically/ weekly/ full
time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL
Page 6 of 7

State Stormwater Management Systems
Permit No. SW8 080907 MOD
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 each permitted drainage area of 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 bypass structure elevations are per the approved plan.
6. The bypass structure is located per the approved plans.
7. A 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. All required design depths are provided.
_13. All required parts of the system are provided.-
_14. The required system dimensions are provided per the approved plans.
15. The orifice is correctly sized and located.
cc: NCDENR-DWQ Regional Office
Page 7 of 7

Date Received Fee Paid Permit Number
'Z l4 ,40- Z 70 -i� - ht
8/ 7 fZ9 -Z, oa �Gr%gD D D
Applicable Rules: ❑ Coastal SW —1995 ❑ Coastal W — 2008 ❑ Ph I1- Post Construction
(select all that apply) ❑ Non -Coastal SW- HQW/ORW Waters ❑ Universal Stormwater Management Plan
❑ Other WQ Mgmt Plan:
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
GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
AAV Company_ _
2. Location of Project (street address):
Courthouse Rd
City: USMCB Camp Lejeune County:Onslow Zip:28542
3. Directions to project (from nearest major intersection):
From Sneads Ferry o east on NC 172 though Lejeune ate turn rt at Courthouse Rd at 6.2 miles ro'ect site
on left and right side._
4. Latitude:34* 35' 32" N Longitude:77' 22' 23" W of the main entrance to the project.
if. PERMIT INFORMATION:
1. a. Specify whether project is (check one): ❑New ®Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit numberSW8 080907 , its issue date (if known)October 8, 2008 and the status of
construction: ❑Not Started ®Partially Completed* ❑ Completed* *provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ❑Drains to an Offsite Stormwater System ❑Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. 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: 6.92 ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:AAV Company Interim Facilities Courthouse Bay
Project ID: Onslo-2009-035, Issued: October 10, 2008, Erosion Sedimentation Control
1=orm SWU-101 Version 071u1y2009 Page I of 6
MAR 2 9 2010
BY: �� �css

III. CONTACT INFORMATION
La. Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Commandin Officer, Maring Corps Base Camp Weune
Signing Official & Title:Carl Baker, Deputy Public Works Officer
b.Contact information for person listed in item la above:
Street Address:Bldg_1005 Michael Rd. —
City:MCB Camp Lejeune State:NC Zip:28547
Mailing Address (if appiicabfe):
City:MCB Camp Lejeune State:NC Zip:28547
Phone: (910 ) 451-2213 Fax: (910 ) 451-2927
Email:[e-mail]
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. ('Phis is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official & Title:
b.Contact information for person listed in item 2a above:
Street Add
City: State: Zip:
Mailing Address (if applicable):
City: State: Zip:
Phone: Fax: ( }
Email:
3.a. (Optional) Print the name and title of another contact such as the project's construction SHpervisor or other
person who can answer questions about the project:
Other Contact Person /Organization:6 an M. pic: /AECOM
Signing Official & Tit
b.Contact information for person listed in item 3a above:
Mailing Address:701 Corporate Center Dr.
City:Raleigh State:NC Zip:27607
Phone: (919 ) 854-6252 _ Fax: [phone]
Email:[e-mail] _
4. Local jurisdiction for building permits:
Point of Contact:
Phone #:
Form SWU-101 Version 07Ju1y2009 Page 2 of 7
MAR 2 9 2010
BY:

IV. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
The existing permit (SW8 080907) accounted for the sand filters and associated level spreader, flow splitter
and filter strips._ This _"mod"_is_a result of the increase_ of impervious area and the resulting adjustments of the
calculations and elevations of the associated sand filters, as well as a reduction in overall BUA by eliminating
Lot # 6.
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUDApproval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.Identify the regulation(s) the project has been designed in accordance with:
® Coastal SW —1995 ❑ Ph 11 — Post Construction
3. Stormwater runoff from this project drains to the White Oak River basin.
4. Total Property Area: 28.1 acres
5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) —Total Coastal Wetlands Area (5) —Total Surface Water Area (6) = Total Project Area':
28.1 acres
Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
between the banks of streams and rivers, the area below the Normal High Water (NHW) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHM line. The resultant project area is used to
calculate overall percent built upon area (BUA). Non -coastal wetlands landward of the NHW (or MHW) line may be
included in the total project area.
8. Project percent of impervious area: (Total Impervious Area / Total Project Area) X 100 = 85.1 %
9. How many drainage areas does the project have?5 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
Form SWU-101 Version 07July2009 Page 3 of 7
7MAR 2 9 2010
BY:

Ba in Inform tion
l aina a Arca 7�
Draina e Area 21
Draina a Area 31
Draina e Area 41
Receiving Stream Name
New River
New River
New River
New River
Stream Class *
SA; HQW
SA; HQW
SA; HQW
SA; HQW
Stream Index Number *
19-(72)
19-(72)
19-(72)
19-(72)
Total Drainage Area (sf)
25390
26932
16024
25884
On -site Drainage Area (sf)
25390
26932
16024
25884
Off -site Drainage Area (sf)
0
0
0
0
Proposed Impervious Area** (sf)
25,066
13,292
13,537
25,064
% Impervious Area** (total)
98.7%
49.4%
84.5%
96.80/1)
[I— i Surface Area
[-raina e Area 11
Draina a Area 21
Wraina a Area 31
D- aina a Area 41
On -site Buildings/Lots (so
0
6000
10200
0
On -site Streets (so
0
4895
0
0
On -site Parking (so
25066
0
0
25064
On -site Sidewalks (sf)
0
2397
1539
0
Other on -site (sf)
0
0
1798
0
Future (sf)
0
0
0
0
Off -site (sf)
0
0
0
0
Existing BUA*** (so
0
1 p
1 0
0
Total (so:
25066
1 13292
13537
1 25064
* Stream Class and Index Number can be determined at: http;//`h2o.enr.state.nc.us/bims/reportszreportsWB.htmi
** Im ervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
*** Report only that amount of existing BLIA that will remain after development. Do not report any existing BUA that is
to be removed and which will be replaced by nezo BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. NA
Projects in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from htW://h2o.enr.state.nc.us/su/bmp forms.htm.
V1. 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. A detailed application instruction sheet and BMP
checklists are available from hUp://h2o.enr.state.nc.us/suZbml2—forrns.htm. The complete application package
should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project
on the interactive online map at bLtp.-/h2o.enr.stite.nc.(isjsLjjm,;i—maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST be signed and initialed in blue ink. Download the latest versions for
each submitted application package from http://h2o.enr.state.nc.us/su/bmp forms.htm.
initials
1. Original and one copy of the Stormwater Management Permit Application Form,
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants /1/i4
Form. (if required as per Part V11 below)
3. Original of the applicable Supplement Form(s) (sealed, signed and dated) and O&M
agreement(s) for each BMP. topayable
Gb
4. Permit application processing fee of to NCDF.NR. (For an Express review, refer to
http://www.envheII2.org/12ages/one/onestopexpress.html for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator f r�---..�---
additional information and to schedule the required application meeting.) �' 1vk.o
MAR 2 9 2010
Form SWU-101 Version 07Ju1y2009 Page 4 of 7
BY:

AAV Company - Addendum to Basin Descriptions for Permit Application
8 gs i _61 Iriformation'
�D_rairiageZAleaIS'
�1 rainageIA_ea18�
Receiving Stream Name
New River
Stream Class
SA, HQW
_m_
Drainage Area (sf)
23468
Existing Imp. Area (sf)
0
?�
Proposed Imp Area (sf)
23217
0.
% Imp Total
98.9%co
v
o `D
Im Surface Area
°
Q-
On -Site Buildings (sf)
0
c
a
On -site Streets (sf)
0
On-stie Parking (sf)
22118
m
a
On -Site Sidewalks (sf)
0
Other On -site (sf)
1099,
Off -site (sf)
0
Q
Totall
23217

5. A detailed narrative (one to two pages) describing the stormwater treatment/management for
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within'/z mile of the site boundary, include the 1h
mile radius on the map.
7. Sealed, signed and dated calculations.
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
WI-IJ
*?;.-,c/
-.194171
10. A copy of the most current property deed. Deed book: Page No: &Jib_
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC AIA
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item 1a, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
http: / /www.secretary.state.nc.us/Cor_porationsZCSearch.asl2x
VII. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
htt 2o.enr.state.nc.us su m forms.htm#deed restrictions. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, 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-q y-lot.
MAR 2 9 2010
Form SWU-101 Version 07July2009 Page 5 of 7
8Y:

VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Bryan Dick, PE, PH
Consulting Firm:
Mailing Address:701 Corporate Center Dr
City:Raleigh _ _ _ State:NC Zip:27607
Phone: [phone]
Email:[e-mail]
Fax: (919 ) 854-6252
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) _ _ , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item IN to develop the project as currently proposed. A copy of
the lease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
As the legal property owner i acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature:
a Notary Public for the State of
do hereby certify that
before me this _ day of
Date:
County of
personally appeared
. and acknowledge the due execution of the application for a
stormwater permit. Witness my hand and official seal,
SEAL
My commission expires
Form SWU-101 Version 07Ju1y2009 Page 6 of 7
FD
MAR 2 9 2010
Qy'•.

X. APPLICANT'S CERTIFICATION
1, (print or type nacre of person listed in Contact Information, itein 2) Cart Baker, Deputj Public Works Officer
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 the
applicable stormw^, rules undeoM PJCAC 2H .1000, SL 2006-246 (Ph. 11-Post Construction) or SL 2008-211.
Date- _1—i 0 . =/a
a Notary Public for the State of A1TA(,,;:1t41( _, County of
04J10:J -do hereby certify that L'l_%f/r personally appeared
before me this day of ��+%= .and acknowledgeJtll due exe ution of the application for
a stormwater permit. Witness my hand and official seal,
ALICE A BONNETTE
Notary Public
Cnslow County
State of North Cprollna
COmmiasion Expires Oct 23, 2010
SEAL
My commission expires 2�t?
Form MU-101 Version 077uly2009 Page 7 of 7
TM 'F_1V)ED
MAR72 9 2010
'BY:

Li
A oumg1.4lou Ex�!►�3; Q =� . 1� `G
Ic
BC

Permit NumberUW_
"A
At
NCDENR
(to be provided by DWQ)
o�DF WAr�9QG
h r
} r
6 r
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section 111) and the 1&M Agreement (Section IV)
Project name
Contact name
Phone number
Date
Drainage area number
Site Characteristics
Drainage area (Ao)
Impervious area
% Impervious (IA)
Design rainfall depth (Ro)
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Storage Volume
Design volume (WQV)
Adjusted water quality volume (WQVAdi)
Volume contained in the sedimentation basin and on top of the sand filler
Maximum head on the sedimentation basin and sand filter (hMa F;ner)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (Rv)
Type of Sand Filter
Open sand filter?
If this is an open sand filter: The clearance between the bottom of the sand
filter and the SHWT (dSHwT)
Closed/pre-cast sand filter?
li this is a closed sand filter: The clearance between the bottom of the sand
filter and the SHWT (dSHWT)
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (ds..)
AAV Company
Bryan Dick
919-854-6252
September 1, 2008
5
23,468.00 ft2 OK
23,217.00 ft2
98.9% %
3.70 in
udu In
0.80 inlhr
0.17 ft3/sec
0.31 felsec
0.14 ft3lsec
6,802.00 ff3
5,101.50 ft3 OK
6,232.00
2.00 ft OK
1.00 it OK
0.94 (unitless)
N YorN
NA it
Y YorN
1.00 it
NA ft
Form SW401-Sand Filter-Rev.3 Parts I and II. Project Design Summary, Page 1 of 3

Sedimentation Basin
Permit Numbo'y yol) '
(to be provided by DWQ)
Surface area of sedimentation basin (As)
Sand Filter
Surface area of sand filter (AF)
Depth of the sand media filter bed (dF)
Coefficient of permeability for the sand filter (k)
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does voiume in excess of the design volume bypass the sand filter?
Is an off-line flow-splilting device used?
Does volume in excess of the design volume flow evenly distributed through a
vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (50h if SA waters)?
Is the BMP located at least 100ft from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamberlforebay (Ws J?
What is the depth of sand over the outlet pipe?
Figure t: open Sand Filter
Sedimentation S:uul Filter
C9rnube'' Clraiiiber
for I=oreba}') _ A�
In -Situ Soil; Seasonably': Hivh Water Table
............"rSed ...........i
OK. Meets minimum, but may need to be increased to
854.00 f? contain the required volume if error under Storage
Volume section.
OK. Meets minimum, but may need to be increased to
2,262.00 fe contain the required volume if error under Storage
Volume section.
2.201t
3.50 (fUday)
18.90 hours OK. Submit drainage calculations.
0.79 days
Y YorN OK
Y YorN OK
Y YorN OK
au.uu n
Y
YorN
OK
Y
YorN
OK
Y
YorN
OK
Y
YorN
OK
NA
YorN
Insufficient ROW location.
14.00 ft
OK
1.90 It
OK
Form SW401-Sand Filter-Rev.3 Parts I and II, Project Design Summary, Page 2 of 3

LO
Permit Number:
(to be provided by DWQ)
Figure 2: Closed Sand Filter
C'o%•er Ch•ales
L'.'eu'
FloesSaud
'4. Chltlet Yipc
Flo w �r • tf r ( paCa
r
(IF
CouM Crele �' othereother[ illFe
..' -.. ..
stluch[ial Material)
•..............
Ia-Sirl1 SUIT I tt l H4VT
Seat ntabh• Hi0i `
Water Table
W11e1. sedutieutatiall Charitber (RFiCl d cbay) _• S.11A lter sau[b<r
Collected (Hrwy se4knems' (Trapped Solids)
Orgriies. Le6ris)
............
`45ed
\� } ,J s
�F
_,.
Form SW401•Sand Filter•Rev.3 Parts I and t1. Project Design Summary, Page 3 ol3

Permit No. "!n1c�—?
(to be provided by DWQJ
III. REQUIRED ITEMS CHECKLIST
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal
package will result in a request for additional information. This will delay final review and approval of the project. Initial
in the space provided to indicate the following design requirements have been met. If the applicant has designated an agent, the
agent may initial below. If a requirement has not been met, attach justification.
Initials Pagel Plan
Sheet No.
6 2. 1. Plans (1 " 50' or larger) of the entire site with labeled drainage area boundaries
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber
Maintenance access,
Flow splitting device,
Proposed drainage easement and public right of way (ROW),
- Design at ultimate build -out,
Off -site drainage (if applicable), and
Boundaries of drainage easement.
_Wry 2. Plan details (V = 50' or larger) for the sand filter showing:
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
i chamber
Maintenance access,
Flow splitting device,
Proposed drainage easement and public right of way (ROW),
Design at ultimate build -out,
- Off -site drainage (if applicable), and
-nn Boundaries of drainage easement.
3. Section view of the sand filter (1" = 20' or larger) showing:
- Depth(s) of the sedimentation chamber and sand filter chamber,
- Depth of sand filter media
Connection between the sedimentation chamber and the sand filter chamber,
- SHWT level(s)
Outlet pipe, and
Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable)
_6AD Af[LII [ 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
ham+-
A"A-
5. Supporting calculations (including drainage calculations)
6. Signed and notarized operation and maintenance (0&M) agreement
7. A coov of the deed restrictions (if reauired).
Form SW401-Sand Filter-Rev.3 Part lil, Page i of 1

Permit Number:JL,*Y�K(y �1� 0—)
(to be provided by DVVQ)
Drainage Area Number: 113
Sand Filter Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity of
structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
— The drainage area will be carefully managed to reduce the sediment load to the
sand filter.
— Once a year, sand media will be skimmed.
— The sand filter media will be replaced whenever it fails to function properly after
vacuuming.
The sand filter will be inspected quarterly and within 24 hours after every storm event
greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of operation and
maintenance will be kept in a known set location and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall be
repaired immediately.
BMP element:
Potential roblem:
How l will remediate theproblem:
The entire BMP
Trash/debris is 2resent.
Remove the trash/debris.
The adjacent pavement
Sediment is present on the
Sweep or vacuum the sediment as
(if applicable)
pavement surface.
soon as possible.
The perimeter of the
Areas of bare soil and/or
Regrade the soil if necessary to
sand filter
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too
Maintain vegetation at a height of
long.
a roximate! six inches.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
repair.
The pretreatment area
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand, if a pesticide is used, wipe it
on the plants rather than spraying.
Form SW40[-Sand Filter O&M-Rev.3
Page 1 of 3

.r'
BMP element:
Potentialproblem-
How I will remediate the problem.
The filter bed and
Water is pond ing on the
Check to see if the collector system
underdrain collection
surface for more than 24
is clogged and flush if necessary. If
system
hours after a storm.
water still ponds, remove the top
few inches of filter bed media and
replace. If water still ponds, then
consult an expert.
The outflow spillway
Shrubs or trees have started
Remove shrubs and trees
and pipe
to grow on the embankment.
immediately.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
The outflow pipe is damn ed.
Repair or replace the pipe.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Sand Filter O&M-Rev.3
Page 2 of 3

Permit Number: r 3 ���
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project narne:USMCB- AAV Company
BMP drainage area number: 5
Print name: Carl Baker
Title: Deoutv Public Works Officer
Address: 1005 Michael Rd.
Pt
Si
I
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
1, . /I ( C L'p1 L.r 1 'n� a Notary Public for the State of
County
of ay , do hereby certify that
_ ('—a Li -2a eEe personally appeared before me this fl VN
day of 642Mag6E;C , and acknowledge the due execution of the
forgoing sand filter maintenance requirements. Witness my hand and official seal,
`%%�i�
•��GHEI-mac''%
N : GBL1G
i O• G
,,� you �.t,Z , ��,•
SEAL
u6q? kd'l�
My commission expires �) 116 k6d �
Form SW40I-Sand Filter O&M-Rev.3
3
SF P
, r ,
19 VVI
Page 3 of

�oF warFA
o
NCDENR
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely filled out, printed and submitted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEETp
I.qP.RO'JECTIINF,ORMATiON
Project name AAV Company
Contact name Bryan M. Dick
Phone number 919.854.6252
Date September 1, 2008
Drainage area number 5
II!IDESIGN;INF,ORMATION _
For Level Spreaders Receiving Flow From a BMP
Type of BMP
Drawdown flow from the BMP cis
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 10-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge?
To a grassed bioretention cell?
To a mulched bioretention cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cis
Answer "Y" to one of the following:
Length based on the t inthr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
23,468-00 ft2
23,217.00
fh
98.93
%
0.98
0.53
cis
8.80
min
2.5 inlhf
1.32
cis
N (Y or N)
N (Y or N)
N (Y or N)
Y (Y or N) Please complete filtef strip characterization below.
50.00
it
0.00
it
0.00
it
50.00
it
8.80
fmsl
8.00
fmsl
1,60
% OK
N
(Y or N) OK
80.00
sq it OK
13
fticfs
7
u
ttn■
(Y or N)
(Y or N)
(Y or N)
cis
(Y or N) A bypass device is not needed.
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev-5 Paris I. and II. Design Summary, page 1 of 2

Length of the level lip
Are level spreaders in series?
21.00 ff Level spreader length OK.
N (Y or N)
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
•
l-------------
M
i B i
(Y or N)
Do not complete this section of the worksheet.
(Y or N)
Do riot complete Ibis section of the worksheet.
Do not complete this sedan of the worksheet.
ft
Do not complete this section of the worksheet.
fi
Do not complete this section of the worksheet.
fi
Do not complete this section o1 the worksheet.
fi
Do not complete this section of the worksheet.
cfs
Do not oomplete thus section of the worksheet.
Do not complete this section of the worksheet.
M
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and it. Design Summary, page 2 of 2

Jill. -REQUIRED ITEMS CHECKLIST - .
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. It the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
Initials Sheet No.
om,Q - G 1. Plans (1" 50' or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
- Forebay (if applicable),
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW), and
Boundaries of drainage easement.
AyftO C 10 2. Plan details (1" = 30' or larger) for the level spreader showing:
Forebay (if applicable),
High flow bypass system,
- One foot topo lines between the level lip and top of stream bank,
Proposed drainage easement, and
Design at ultimate build -out.
0
3. Section view of the level spreader (1 " = 20' or larger) showing:
Underdrain system (if applicable),
Level lip,
Upslope channel, and
Downslope fitter fabric.
/t'QJ
4. A date -stamped photograph of the filter strip that clearly shows the type of vegetation that is present.
40,0
C q
5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
�4#
6. The supporting calculations,
A t
7. A copy of the signed and notarized operation and maintenance (OW) agreement.
tii-
8. A copy of the deed restrictions (if required).
Form SW401 -Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part III, page 1 of 1

JAECOM
701 Corporate Center Drive, Suite 475, Raleigh. North Carolina 27607
T 919.854,6200 F 919.854.6259 www.earthtech.aecom.com
March 23, 2010
Bryan M. Dick, PE, PH
701 Corporate Center Dr.
Suite 475
Raleigh, NC 27607
919-854-6252
NCDENR — DWQ
Express Permitting
Ms. Janet Russell and Mr. Chris Baker, PE
127 Cardinal Dr_ Extension
Raleigh, NC 28405
Re: AAV Company Express Permit Modification
AECONi
Please find enclosed the documents for the major modification of the AAV Stormwater Permit
SW8 080907. The fore bay depth and sand filters changed to make up for need volume, so I
have updated the talcs and added a new supplement for Sand Filters 2 and 3.
1 believe that this takes care of all of your comments.
Please give me a call if you have any questions or comments. 864-506-1465
Regards,
Bryan M. Dick, PE, PH
i S LJ to S ej % S f�n
MAR 2 9 7010
BY ;

STORMWATER MANAGEMENT PLAN
(MODIFICATION OF PERMIT #SW8 080907)
PREPARED FOR: MCB CAMP LEJEUNE
AAV COMPANY
COURTHOUSE RD
USMCB CAMP LEJEUNE
ONSLOW COUNTY, NC
DATE: 3-23- 1 0
AECOM, INC
701 CORPORATE CENTER DR., SUITE 475
RALEIGH, NC 27607
91 9-854-6200
PREPARED BY:
IAN JEWELL
CHECKED BY:
BRYAN M. DICK, PE, PH
CAR pZ �i
IA
035724 .
�,NGINE�
iAN I m 1 '����
F�C9I'V E;`1D
MAR 2 9 2010
BY:

PROJECT DESCRIPTION/GENERAL INFORMATION
THIS DOCUMENT IS TO SERVE AS A MODIFICATION TO AN EXISTING PERMIT
(SW8 080907) FOR THE MCB CAMP LEJEUNE - AAV PROJECT. THE EXISTING
PERMIT ACCOUNTED FOR SIX SAND FILTERS AND ASSOCIATED LEVEL SPREADER, FLOW
SPLITTER AND FILTER STRIPS. THIS MODIFICATION IS THE RESULT OF THREE
CHANGES, OUTLINED BELOW:
1. A PROPOSED IMPERVIOUS PARKING LOT HAS BEEN REMOVED DUE TO
UPDATED WETLANDS BOUNDARIES WHICH CONFLICT WITH THE PARKING LOT
LOCATION. AS A RESULT, PROPOSED SAND FILTER # 6 AND ITS ASSOCIATED
LEVEL SPREADER HAVE BEEN REMOVED FROM THE PROJECT, THE UPDATED
WETLAND BOUNDARY HAS BEEN JURISDICTIONALLY APPROVED BY THE
USACE.
2. DUE TO UPDATED WETLAND BOUNDARIES, THE LEVEL SPREADER OF
PROPOSED SAND FILTER #2 AND ITS ASSOCIATED FILTER STRIP HAVE BEEN
MOVED APPROXIMATELY SO AS NOT TO IMPACT THE REVISED WETLAND AREA.
THE UPDATED WETLAND BOUNDARY HAS BEEN JURISDICTIONALLY
APPROVED BY THE USACE.
3. THE BUILT UPON AREAS (BUA) OF TWO CONCRETE ENTRANCEWAYS/RAMPS
ARE NOT ABLE TO BE TREATED BECAUSE OF THE ELEVATION DIFFERENCE
BETWEEN THE TOP OF THE ENTRANCEWAYS AND THE EXISTING PARKING
LOTS TO WHICH THE ENTRANCEWAYS FLOW. THE PROPOSED PARKING LOTS
ARE HIGHER IN ELEVATION THAN THE EXISTING ADJACENT PARKING LOTS.
WHEN STORMFLOW FALLS ON THE PROPOSED ENTRANCEWAYS, IT WILL
FLOW TO THE ELEVATION OF THE EXISTING LOTS, WHICH ARE LOWER IN
ELEVATION THAN THE PROPOSED SAND FILTER NEARBY. THUS, THIS BUA
WILL NOT BE ABLE TO BE TREATED BY ANY OF THE PROPOSED SAND
FILTERS. THE TOTAL BUA OF THESE TWO ENTRANCEWAYS IS 2229 SQUARE
FEET.
AT THE TIME OF THIS REPORT, SOME SITE WORK HAS BEEN COMPLETED.
FOLLOWING THE FIRST SUSPENSION OF WORK AS A RESULT OF DISCOVERING THAT THE
THE WETLANDS BOUNDARIES WERE INCORRECT, THE CONTRACTOR RE -MOBILIZED IN
SEPTEMBER 2009 AND COMPLETELY INSTALLED PRESCRIBED EROSION AND SEDIMENT
CONTROLS. THE SITE HAS BEEN ROUGH GRADED WITH STOCK -PILED FILL; THE
BUILDING PAD, TRAILER LAYDOWN AREA, AND NEW PARKING LOT WAS STAKED -OUT.
SANDFILTERS #1 AND #4 WERE EXCAVATED AND THEN PARTIALLY FILLED IN
PREPARATION FOR PIPE INSTALLATION, THE RETAINING WALL INSTALLATIONS ARE
75% COMPLETE. WHILE AWAITING APPROVED PERMIT REVISIONS, THE CONTRACTOR
HAS TAKEN ADDITIONAL EROSION CONTROL MEASURES WITH ADDITIONAL SEDIMENT
TRAPS AND CHECK -DAMS WHILE THE SITE IS VULNERABLE. NO UTILITY WORK HAS
BEEN PERFORMED TO DATE. IN ADDITION, NO WORK HAS BEEN PERFORMED IN THE
VICINITY OF THE AREAS AFFECTED BY THESE PERMIT REVISIONS (NOTABLY: THE
NORTHEAST CORNER OF THE PRE-ENGINEERED BUILDING (PEB), THE SMALL TACTICAL
PARKING LOT LOCATED IN THE SOUTHEAST PORTION OF THE SITE AND SANDFILTER #2,
LOCATED IN THE NORTHWEST CORNER OF THE SITE),
THE AAV COMPANY PROJECT IS LOCATED OFF COURTHOUSE RD. ON CAMP
LEJEUNE MARINE CORPS BASE IN ONSLOW COUNTY, INC. ALTHOUGH NO SPECIFIC
TRACT CAN BE IDENTIFIED WITH THIS PROJECT (THE BASE IN ONE LARGE, CONTIGUOUS
PROPERTY) THE AREA BEING DISTURBED FOR THE PROJECT IS APPROXIMATELY 6.92
ACRES. THE PROJECT WILL BE AVOIDING IMPACTS OF WETLANDS.
7MAR2 9 2010
BY:_�l

CONTACT INFORMATION
AECOM
ATTN: BRYAN M. DICK, PE, PH
701 CORPORATE CENTER DR., SUITE 475
RALEIGH, NC 27607
TELEPHONE: [phone]
FAX: [phone]
IDENTIFY PROJECT INVOLVEMENT
THIS PROJECT IS A PART OF THE WHITE OAK RIVER BASIN, AN❑ IS CURRENTLY
NOT SUBJECT TO ANY BUFFER RULES. THE SITE IS APPROXIMATELY 2,500 FEET FROM
THE NEW RIVER AND APPROXIMATELY 417 FEET FROM COURTHOUSE BAY, JUST
OUTSIDE OF SNEADS FERRY, NC AND IS LOCATED IN ONSLOW COUNTY, WHICH IS AS
OF OCTOBER 1, 2008 IS SUBJECT TO THE COASTAL STORMWATER RULES. HOWEVER,
THE ORIGINAL PERMIT FOR THIS PROJECT WAS COVERED BY THE NPDES PHASE II
STORMWATER RULES. THE NCDWQ STREAM CLASSIFICATION OF COURTHOUSE BAY
IS SA, HQW AND ITS NCDWQ INDEX NUMBER IS 19-36. THE STREAM
CLASSIFICATION OF THE NEW RIVER IS SA, HQW AND ITS INDEX NUMBER IS 1 9-27.
THE PROPOSED PROJECT STORMWATER PLAN WILL MEET THE REQUIREMENTS
OF DETAINING THE 3.7 INCH RAINFALL EVENT FOR A PERIOD OF APPROXIMATELY 2-
DAYS, PER THE REQUIREMENTS BY THE STATE AS REFERENCED FROM THE DWQ
STORMWATER MANUAL, JULY 2007. THE STORMWATER DESIGN IS HIGH DENSITY,
COASTAL STORMWATER. FIVE SAND FILTERS ARE PROPOSED TO TREAT FIVE SEPARATE -
DRAINAGE AREAS. THE TOTAL PERCENT IMPERVIOUSNESS OF THE SITE IS 45.2%.
THIS PROJECT IS WITHIN 0.5 MILES OF SA WATERS AND THE USE OF INFILTRATION
DEVICES WAS REJECTED BY MR. VINCENT LEWIS ON BEHALF OF NC- DWQ. DUE TO
THE POOR INFILTRATING CONDITIONS ON THE SITE, SAND FILTERS ARE USE❑ TO TREAT
THE ❑ESIGN TREATMENT VOLUME. IN ORDER TO MEET PRE -POST REQUIREMENTS,
EACH BASIN DISCHARGES TO A DEPRESSIONAL AREA, USUALLY A WETLAND, TO
ENSURE THAT DOWNSTREAM RECEIVING WATERS ARE NOT ACTUALLY RECEIVING
DISCHARGE FROM THE SAN❑ FILTERS DURING THE DESIGN STORM. TWO AREAS OF
BUILT -UPON AREA, WHICH ARE CONCRETE ENTRANCE RAMPS, WILL NOT BE COLLECTED
BY THESE SAND FILTERS DUE TO THE LIMITATIONS OF ELEVATION. THESE LIMITATIONS
ARE FURTHER ❑ISCUSSED BELOW.
STORMWATER DESIGN PARAMETERS
THE SAND FILTERS ARE BASED ON THE FOLLOWING PARAMETERS OR
OBJECTIVES:
• PROVIDE 95% TSS REMOVAL
• PROTECT THE VALUE OF THE RECEIVING WATER RESOURCE
• 3.7" RAINFALL FOR BASIN STORAGE SIZING
• THE 1 YR RAINFALL DISCHARGE FROM THE FILTER MUST INFILTRATE BEFORE
REACHING SURFACE WATERS
• RATIO OF IMPERVIOUS SURFACE TO THE TOTAL AREA OF THE DRAINAGE AREA
7MAR 9 2010

• RAINFALL EXCEEDING THE DESIGN STORM WILL BYPASS THE BASINS AND FLOW
THROUGH A MINIMUM OF 50' LONG VEGETATED FILTER
DISCUSSION OF TREATMENT MEASURES
THE EXISTING PERMITTED TREATMENT 1S TO UTILIZE FIVE SEPARATE SAND
FILTERS TO MEET THE TSS AND PEAK FLOW REQUIREMENTS SET FORTH E3Y DWQ,
BYPASS DEVICES ARE PROVIDED TO ALLOW ANY RUNOFF VOLUME THAT EXCEEDS THE
DESIGN STORAGE VOLUME TO BE ROUTED TO A LEVEL SPREADER WITH A VEGETATED
FILTER STRIP. THE LEVEL SPREADER LENGTH IS DESIGNED TO HANDLE THE 10 YR
PEAK RUNOFF RATE, SO NO BYPASS OF THE FILTER IS NECESSARY.
THIS MODIFICATION IS ADDRESSING THE ADJUSTMENTS OF CALCULATIONS AND
ELEVATIONS DUE TO THE INCREASE IN SIZE OF ❑RAINAGE AREAS AND AMOUNTS OF
IMPERVIOUS AREA FOR THE ASSOCIATED SAND FILTERS. SPECIFICALLY, TO INSURE
THE CORRECT VOLUME IS HELD, THE FOREBAY BOTTOM ELEVATIONS HAVE BEEN
ADJUSTED FOR SAND FILTERS 2 AND 9. ALSO THE TOP OF THE SAND BED ELEVATIONS
HAVE 13EEN ADJUSTED TO ACCOUNT FOR INCREASED VOLUME DUE TO IMPERVIOUS
AREA. THE ATTACHED PLANSHEETS DEPICT THE UPDATED DRAINAGE AREAS AND
ELEVATIONS.
CONCLUSION
THIS STORMWATER MANAGEMENT PLAN REPRESENTS AN ENVIRONMENTALLY
SENSITIVE AND EFFECTIVE PLAN FOR UTILIZING THE PROPOSED STORMWATER
TREATMENTS TO ACCOMMODATE THE INCREASED RUNOFF OF THE PROPOSED SITE
DEVELOPMENT.
MAR 2 8 2010
BY:

Ja < ;onvill ti"
5 P _
k .?.as_ER RoAQ ;��,o G��P.=- Pined G
O le Bay I
f3RE'NSTER BOULEVARD T_
yfh 3 �.
Camp Lejeune Main Gate
Y o
zP y a i
�G w 77
BIRCH` 7— X-J— 1�
Camp Lejeune South Gate
h r r
Sneads' Ferry
`i {
Project Location
^t r I
r
�C mp Lejeune MC Bas�
PROJECT SITE
Legend Vicinity Map
PAVED 0 0.5 , 2Wes AAV Company
Interim Facility at Courthouse Bay
UNPAVED Camp Lejeune Marine Corps Base
M A k 2 9 2010 Onslow County, NC

Sand Filter Basin 2 Calculations
Originator: Andrew Wilson
Reviewer: Bryan Dick P.E.
Camp Lejeune AAV Platoon
Sand Filter Basin 2
$tep 1 Compute water quaiity volumes
Rv = 0.05+0.009(%Impervious)
Date: 3/17/10
Date:
SF Ac
Drainge Area (Sf)
26932
0.618
Imp Area (sf)
13292
0.305
% Imp
49
Rv = 0.49
Ad = 0.618 acres
Rd = 3.7 in
WQV (ft3) = Rv . Ad (ac) *43,560 * Rd * 1/12
WQV = 4104 ft3
Min Required Volume WQVadj = (0.75)*WQV
WQVadj =
Step 2 Determine minimum filter bed and minimum sedim(
I respect to water quality volume and maximum head
ion basin surface areas with
Sedimentation Basin Surface Area = As = 0,066*WQV
Min As = 271 ft2
Sand filter Bed surface Area = At = (WQV*df)/((k)*(t)(ha+df))
df: Depth of sand filter bed = (Top of Bed El. - Filter Bottom El,) = 1.60 ft
k: coeff of permeability = 3.5 tt/day
t: time to drain sand filter bed = 1.66 days
ha: avg head = hmax/2 0.88 ft
hmax: maximum head = (Weir El. - Top of Bed El.) _ Pj 7�6 ft
Min At =(456 ft2
Step 3 Verify that WOVadj is contained with minfumum surface areas, Revise areas if needed
Check water quality volume = (Af+As)"Hmax > WQVadj
Check Volume = 1279
Required Af = (WQVadj/Hmax) - As
Required At =
Required Forebay Volume Vs = 0.2*WQVadj
Required Vs =
Step 4 Check Design Criteria
<WQVadj `.Revise:°TotaliVokume
Design Forebay Area As = 16x24 384 ft2 >Required As OK
Design Forebay Volume ft3 714 21 % >Required Vs & 20% total volume OK
= As*(Weir El, - Forebay Bottom El,)
Design Sand Filter Area At = 16x94 1504 ft2 >Required At OK
Design Sand Filter Volume = Af' Hmax 2647 ft3
7, a11Treated?V,.ol . Vol Filter +. Vof Forebay"";'".3361 . ,ft3' >WQVadj OK -"x jED
MAR29 2010
BY'

Design Elevations
Existing Ground Elevation = 7.00
Pipe Diameter + Pipe Wall Thickness = 0.35
Under Drain Pipe Invert Elevation = 6.21
Under Drain Pipe Crown Elevation = 6.56
Minimum Required Bed Elevation = 7.56 (1ft required above pipe crown)
Flow Splitter Elevations
Bypass Weir El. = 9.36
Flow Splitter - Inlet El. = 9.56
Flow Splitter - Bypass = 6.80
Sand Filter Elevations
Sand Filter Bottom Elevation = 6.00
Sand Filter Top of Bed Elevation = 7.60
Sand Filter Under Drain Discharge Elevation = 6.00
Top of Concrete = 10.00
Forebay Elevations
Forebay Bottom Elevation = 7.50
Sediment Removal Elevation = 7.96 -25% of Vs
Additional Design Criteria
Depth to Exist grount to SHWT (ft) 3.00
Flow rate through filter media = (k*b36)I(24*60*60) = 0.061 CFS Design = 0.49
Diameter at S=.005 and n=.011 1.077 2-4" pipes
'Time to Drain WQV = volume !{rate {cfs)*60s*60mir 15.3 hrs
7MAR 2 s 2010
BY:

-� Sand Filter Basin 3 Calculations
Originator: Andrew Wilson
Reviewer: Bryan Dick P.E.
Camp Lejeune AAV Platoon
Sand Filter Basin 3
Date: 3/17/10
Date:
SF Ac
Drainge Area (Sf)
16024
0.368
Imp Area (sf)
13537
0.311
% Imp
84
Step 1 Compute water quality volumes _
Rv = 0.05+0.009(%Impervious)
Rv = 0.81
Ad = 0.368 acres
Rd = 3.7 in
WQV (ft3) = Rv ' Ad (ac) *43,560 ' Rd ' 1/12
W QV = 4004 ft3
Min Required Volume WQVadj = (0.75)'WQV
WQVadj =
Determine minimum filter bed and minimum sedimentation basin surface areas with
-espect to water quality volume and maximum head
Sedimentation Basin Surface Area = As = 0.066'WQV
Min As - 1264 ft2
Sand filter Bed surface Area = Af = (WQV`df)/((k)'(t)(ha+df))
df: Depth of_sand filter bed = (Top of Bed El. - Filter Bottom El.) = 1,55 ft
k: coeff of permeability = 3.5 Wday
t: time to drain sand filter bed = 1.66 days
ha: avg head = hmax/2 0.675 ft
hmax: maximum head = (Weir El. - Top of Bed El.) = 1 ;q.` 2- t ,-
Min At - 1480 ft2
Step 3 Verify that WQVadj is contained with miniumum surface areas, Revise areas if needed
Check water quality volume = (Af+As)"Hmax > WQVadj
Check Volume = 1005
Required Af = (WQVadj/Hmax) - As
Required Af =
Required Forebay Volume Vs = 0.2"WQVadj
Required Vs =
Step 4 Check Design Criteria
WQVadj; Ravise.TptafPVolume
Design Forebay Area As = 14x24 336 ft2 >Required As OK
Design Forebay Volume ft3 638 19% >Required Vs & 20% total volume OK
= As'(Weir El. - Forebay Bottom El)
Design Sand Filter Area At = 24x83 1992 ft2 >Required At OK
Design Sand Filter Volume = At ' Hmax 2689 ft3
ITbtal Treated,Vol lVol Filter+ Vol Farebat ` 332& " ft3- >WQVadj OK
MAR 2 9 2010
BY:

Pe gn Elevations
Existing Ground Elevation = 8.00
Pipe Diameter + Pipe Wall Thickness W 0.35
Under Drain Pipe Invert Elevation = 8.20
Under Drain Pipe Crown Elevation = 8.55
Minimum Required Bed Elevation = 9.55 1 ft required above pipe crown
Flow Splitter Elevations
Bypass Weir El. = 10.90
Flow Splitter - Inlet El. = 11.10
Flow Splitter - Bypass = 10.50
Sand Filter Elevations
Sand Filter Bottom Elevation = 8.00
Sand Filter Top of Bed Elevation = 9.55
Sand Filter Under Drain Discharge Elevation = 8.00
Top of Concrete = 12.00
Forebay Elevations
Forebay Bottom Elevation = 9.00
Sediment Removal Elevation = 9.47 •-25% of Vs
Additional Design Criteria
Depth to Exist grount to SHWT (ft) 2.50
Flow rate through filter media = (k*b36)1(24*60*60) = 0.081 CFS Design = 0.49
Diameter at 5=.005 and n=„•011 1 1.077 2-4" pipes.••,•,.••,••.•_�.__
Time to Drain WOV = volume /(rate (cfs)*60s*60mir 11.5 hrs
RPCr-rvvcx
MAR 1 0 2@1@
3X:

The
Catena
roup
SOILS REPORT FOR
STORM WATER BASINS
AA V Site
Camp Lejeune, NC
Prepared For:
EarthTech
701 Corporate Center Drive
Suite 475
Raleigh, NC 27607
Prepared By.
The Catena Group
Hillsborough, North Carolina
April 14, 2008
//
/Gary S. Kreiser
410-B Millstone Drive
Hillsborough, NC 27278
(919) 7321-1300
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MAR 2 9 2010
IBY:

INTRODUCTION
The Marine Corps Base at Camp Lejeune plans an expansion of Amphibious Assault Vehicle Site (AAV).
As part of this expansion, several stormwater infiltration basins are proposed to infiltrate runoff from
adjacent impervious surfaces. As part of the application process, a soils investigation detailing soil type,
infiltration rate, and depth to seasonal high water table is required. The Catena Group, Inc (TCG) has
been retained to perform the soil investigations.
INVESTIGATION METHODOLOGY
Prior to the Field investigation, the Onslow County Soil Survey was referenced to get an overview of the
possible soil series located in the study area. Around the AAV Site, there are two mapping units. Figure
I presents the mapped soil series and the general location of the proposed infiltration basins where the
borings and infiltration tests were performed. 'fable 1 presents the soil series, map unit symbol and
taxonomic class.
Table I Soil Series, Map Unit Symbol, and Taxonomic Class
Map Unit Symbol
Soil ScricslMap Unit
Name
Taxonomic Class
Ur
Urban Land
NIA
WaB
Wando
Thermic, coated Typic
Quartzi psamments
The field investigation was performed on March 11, and 27, 2008. Soil borings were made with a hand -
turned auger in the vicinity of the proposed infiltration basins. Observations of the landscape (slope,
drainage patterns, past use, etc.) as well as soil properties (depth, texture, structure, seasonal wetness,
restrictive horizons, etc.) to a depth > 48 inches, when possible, were recorded. Soil color was
determined with a Munseil Soil Color Chart.
The rate of water entry into a soil is referred to as the infiltration rate. The infiltration rate into a soil
decreases with time mainly due to an increase in the soil water content and a decrease in the hydraulic
gradient. As infiltration continues, the rate of water entry into the soil reaches a constant value (steady
state condition) which is considered to be the same as the saturated hydraulic conductivity (KSAT•) of the
soil. The KSAT was measured in the field and used to characterize the infiltration rate for each proposed
infiltration basin.
KSAT measurements were performed at each of the proposed infiltration basin using a constant -head
permearncter (Amoozemeter). Before any readings were recorded, the Amoozemeter was allowed to
equilibrate, typically 25 minutes.
Based on conversations with the designer of the proposed infiltration basins (Mr. Bryan Dick of Earth
Tech), construction of these basins would remove approximately 6 to 12 inches of topsoil. As such, the
KSAT measurements were performed around a depth of 12 inches in order to estimate the infiltration rate
at the new soil surface.
MAR 8 8 2010
BY:

FINDINGS
Soil Type
Based on the borings in the vicinity of the proposed basins, it was detennined that the majority of the soil
at the AAV Site was urban land with varying depths of sandy fill material over the naturally occurring
soil surface. There were two borings (Site l and Site 6) that the soil borings indicated that there was less
disturbance and were classified as the Wando soil series. Detailed boring logs Ior each boring are
attached.
Table 2 presents each boring with a soil series determination. Determination of soil series was made
through a comparison of soil boring descriptions to the Natural Resources Conservation Service (NRCS)
Official Series Description (OSD) for the soil series that were mapped by the NRCS for this site.
Ii
Table 2 Soil Borings and Soil Series Determination
Boring #
Soil Series Determination
Basin I
Wando
Basin 2
Urban Land 24" fill*
Basin 3
Urban Land 22" fill*
Basin 4
Urban Land 30 " fill*
Basin 5
Urban Land 30" fill*
Basin 6
Wando
*no determination of soil series due to fill material
Depth to Seasonal High Water Table
During the field investigation, the depth to the seasonal high water table (SHWT) was determined. Since
the soil was typically sandy, the determination of the SHWT was made through field indicators of
redoximorphic features or the presence of saturated soil. Table 3 presents the soil borings and the
determination of the SHWT.
Table 3 Boring and Depth to SHWT
Boring #
SHWT Determination (inches
below Surface)
Basin 1
40
Basin 2
40
Basin 3
30
Basin 4
>48
Basin 5
40
Basin 6
30
The depth to the SHWT varied greatly around Basin 6. There is a large ditch (See Figure 1) that is near
the proposed basin location. Approximately 60 feet to the east of the test location, the depth to the SHWT
is only 13 inches. During this investigation, the exact configuration of the basin was unknown. Due to
the variations in SHWT, the proximity of the ditch and the uncertainties of the basin configuration it is
unknown if there will be a large enough area to fit a basin.
MAR 2 2010
BY:

Infiltration Date
Multiple saturated hydraulic conductivity tests were performed at each proposed infiltration basin. The
results for each test are shown below in Table 4. Data sheets for each hydraulic conductivity tests are also
attached. At each basin location, the geometric mean was taken and is presented in Table 4. The
geometric mean was calculated instead of the arithmetic mean, as it tends to dampen the effect of very
high or low values, which might bias the arithmetic mean if a straight average was calculated.
Table 4 Results of Saturated Hydraulic Conductivity Tests and Geometric Mean
Test Location
Test Number
Test Depth
(inches)
Measured KsnT
(in/hr)
Geometric
Mean (in/hr)
Basin 1
1
I IA
122
1.41
2
12.2
1.17
3
9.8
1.97
Basin 2
l
11.8
3.13
2.19
2
10.6
1.53
3
11.0
1.76
Basin 3
1
12.6
3.51
2.88
2
11.8
1.53
3
11.0
1.76
Basin 4
1
9.8
2.20
2.70
2
11.0
3.30
Basin 5
1
11.4
1.0
1.52
2
11.0
L8
3
11.0
2.0
Basin 6
1
12.2
5.34
6.60
2
13.8
7.12
3
13.4
7.54
Since soil is inherently non -homogeneous, field tests can often misrepresent the area] hydraulic
conductivity of a soil. Typically, field tests underestimate the saturated hydraulic conductivity of clayey
soil and overestimate it in sandy soils. As a result of this misrepresentation a "moderation factor" is
suggested to convert point saturated hydraulic conductivity to area] saturated hydraulic conductivity for
each proposed infiltration basin. Since the soil is typically fine sand or loamy sand, a moderation factor
of 0.5 was used to correct for the potential of overestimating the infiltration rate. Table 5 presents the
saturated hydraulic conductivity geometric mean for each infiltration basin as well as a moderation factor
to get an area infiltration rate for each proposed infiltration basin.
Table 5 Geometric Mean, Moderation Factor and Areal Infiltration Rate for Each Basin
'rest Location
Geometric Mean
Moderation Factor
Areal Infiltration Rate
inches/hour)
Basin 1
1.41
0.5
0.71
Basin 2
2.19
0.5
1.10
Basin 3
2.88
0.5
1.44
Basin 4
2.70
0.5
1.35
Basin 5
1.52
0.5
0.76
Basin 6
6.60
0.5
�1'04� !'` .r 7 VED
NIAR z 9 2010
rv:

As shown in Table 5, the majority of proposed basin locations have an infiltration rate of 1 inch/hour or
greater with the only exceptions being Basin land 5. However, even with these lower infiltration rates for
Basin l and 5, these areas are still greater than the required 0.52 inch/hour.
CONCLUSIONS
The findings presented herein represent TCG's professional opinion based on our site and soils
evaluation. This report is provided to assist in the application for the infiltration basins by providing the
soil information. North Carolina DWQ must issue the final permit. Any concurrence with the findings in
this report would be made at that time.
MAR 2 9 2010
BY:

0 Legend
• {e 1
1114.
! Proposed Basins
-'- �• - �r tr ! t ` Ditch
r
+ " .. ,. � �• -y NRCS Soil Mapping Unit
o� t Ur
WaB
The
Catena
Group
AAV Site
Camp Lejeune, NC
1j cc K-I V :ice 1
Date: April2008
Scale 1 "=150'
Job No.: 7354
Figure

DW.Q�USE;DM.Y
Date Received
Fee Paid
Permit Number
Applicable Rules: ❑ Coastal SW —1995 ❑ Coastal SW — 2008 ❑ Ph 11 - Post Construction
(select all that apply) © Non -Coastal SW- HQW/ORW Waters ❑ Universal Storm water Management Plan
❑ Other WQ Mgmt Plan:
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
1. GENERAL INFORMATION
1. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
AAV Company
2. Location of Project (street address):
City: USMCB Camp Lejeune County:Onslow Zip:28542
3. Directions to project (from nearest major intersection):
Fr rn Sneads Fegy go east on NC 172 thouA Le'eune gate, turn rt at Courthouse Rd at 6.2 miles ro'ect site
on left and right side.
4. Latitude:34° 35' 32" N Longitude:770 22' 23" W of the main entrance to the project.
li. PERMIT INFORMATION:
I. a. Specify whether project is (check one): []New ®Modification
b.If this application is being submitted as the result of a modification to an existing permit, list the existing
permit numberSW8 080907 , its issue date (if known)October 8, 2008 and the status of
construction: ONot Started ®Partially Completed* ❑ Completed* "provide a designer's certification
2. Specify the type of project (check one):
❑Low Density ®High Density ODrains to an Offsite Stormwater System Other
3. If this application is being submitted as the result of a previously returned application or a letter from DWQ
requesting a state stormwater management permit application, list the stormwater project number, if
assigned, and the previous name of the project, if different than currently
proposed,
4. a. 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 ZSedimentation/Erosion Control: 6.92 ac of Disturbed Area
❑NPDES Industrial Stormwater ❑404/401 Permit: Proposed Impacts
b.If any of these permits have already been acquired please provide the Project Name, Project/Permit Number,
issue date and the type of each permit:AAVCompany Interim Facilities Courthouse Lax
Project ID: _Onslo-2009- 5, Issued: October 10, 2008, Erosion Sedimentation Control
Form SWU-101 Version 07July2009 Page t of 6
F
IVEID9 2010

III. CONTACT INFORMATION
La_ Print Applicant / Signing Official's name and title (specifically the developer, property owner, lessee,
designated government official, individual, etc. who owns the project):
Applicant/Organization:Commanding Officer—Maring-Corps Bane, Camp[,eieune
Signing Official & Title:Car_1_Baker, Deputy Public Works Officer
b. Contact information for person listed in item la above:
Street Address:Bldg 1005 Michael Rd.
City:MCB Camp Lejeune _ State:NC Zip:283.47 _
Mailing Address (if applicable):
City:MCB Camp Lejeune _ State:NC Zip:28547 ^^
Phone: (910 ) 451-2213_ _ Fax. f910 ) 451-2927
Email:[e-mail]
c. Please check the appropriate box. The applicant listed above is:
® The property owner (Skip to Contact Information, item 3a)
❑ Lessee* (Attach a copy of the lease agreement and complete Contact Information, item 2a and 2b below)
❑ Purchaser* (Attach a copy of the pending sales agreement and complete Contact Information, item 2a and
2b below)
❑ Developer* (Complete Contact Information, item 2a and 2b below.)
2. a. Print Property Owner's name and title below, if you are the lessee, purchaser or developer. (This is the
person who owns the property that the project is located on):
Property Owner/Organization:
Signing Official & Ti
b. Contact information for person Listed in item 2a above:
Street Address:
City:
Mailing Address (if applicable):
City:
Phone: __)_......
Email:
State: Zip:
State: Zip:
Fax: (
3. a. (Optional) Print the name and title of another contact such as the project's construction supervisor or other
person who can answer questions about the project:
Other Contact Person/Organization:B , ary n M._Dick/AECOM
Signing Official & Title:
b. Contact information for person listed in item 3a above:
Mailing Address:701 Corporate Center Dr.
City:Raleighh State:NC Zip:27607 _
Phone: (919 _ ) 8546252 _ Fax: (919 ) 854-6259
Email:b [e-mail]
4. Local jurisdiction for building permits:
Point of Contact: Phone #: {
Form SWU-t01 Version 07July2009 Page 2 of 7

1V. PROJECT INFORMATION
1. In the space provided below, briefly summarize how the stormwater runoff will be treated.
The existing permit (5W8 08090Z) accounted for the sand filters„ and associated level spreader, flow splitter
and filter strips. This "mod" is a result of the increase of .impervious area and the resulting adjustments of the
calculations and elevations of the associated sand filters, as well as a reduction in overall BUA by eliminadM
2. a. If claiming vested rights, identify the supporting documents provided and the date they were approved:
❑ Approval of a Site Specific Development Plan or PUDApproval Date:
❑ Valid Building Permit Issued Date:
❑ Other: Date:
b.Identify the regulation(s) the project has been designed in accordance with:
® Coastal SW —1995 ❑ Ph 11 — Post Construction
3. Stormwater runoff from this project drains to the White Oak River basin.
4. Total Property Area. 28.1 acres 5. Total Coastal Wetlands Area: 0 acres
6. Total Surface Water Area: 0 acres
7. Total Property Area (4) —Total Coastal Wetlands Area (5) —Total Surface Water Area (6) = Total Project Area':
28.1 acres
' Total project area shall be calculated to exclude the following: the normal pool of impounded structures, the area
Between the banks of streams and rivers, the area below the Normal High Water (NlYW) line or Mean High Water
(MHW) line, and coastal wetlands landward from the NHW (or MHW) line. The resultant project area is used to
calculate overall percent built upon area (BLIA). Non -coastal wetlands landward of the NHW (or MHW) line may be
included in the total project area.
8. Project percent of impervious area: (Total impervious Area / Total Project Area) X 100 = 85.1 %
9. How many drainage areas does the project have?5 (For high density, count 1 for each proposed engineered
stormwater BMP. For low density and other projects, use 1 for the whole property area)
10. Complete the following information for each drainage area identified in Project Information item 9. If there
are more than four drainage areas in the project, attach an additional sheet with the information for each area
provided in the same format as below.
MAR 2 9 2010
Form SWU-101 Version 07July2009 Page 3 of 7

aS__ . _ Ormatron
l�rarna�`�"')►Areag1"Drama
r._-is p ._
Area 2Urains
e Area 3
Uiaina a Area 4
Receiving Stream Name
New River
New River
New River
New River
Stream Class
SA; HQW
SA; HQW
SA; HQW
SA; HQW
Stream Index Number *
19-(72)
19-(72)
19-(72)
19-(72)
Total Drainage Area (so
25390
26932
16024
758M
On -site Drainage Area (sf)
25390
26932
16024
258M
Off -site Drainage Area (so
0
0
0
0
Proposed Im ervious Area** (sf)
25,066
13,292
13,537
25,064
% Impervious Area** (total)
98.7%
49.4%
84.5%
96.8%
e'�rvia " Su face AreaA1�
Ihaina a Area
e Area�D
Gina a Area 4
On -site Buildings/Lots (sf)
0
6000
10200
0
On -site Streets (sf)
0
4895
0
0
On -site Parking (so
25066
0
0
25064
On -site Sidewalks (so
0
2397
1539
0
Other on -site (sf)
0
0
1798
0
Future (sf)
0
0
0
0
Off -site (sf)
0
0
0
0
Existing BUA*** (sf)
0
0
01
0
Total (so:
25066
13292 1
13537 1
25064
Stream Class and Index Number can be determined at: ht 2o.enr.state.nc.us ims r arts r ortsWB.htm2
** Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
*** Report only that amount of existing BUA that will remain after development. Do not report any existing BUA that is
to be removed and which will be replaced by new BUA.
11. How was the off -site impervious area listed above determined? Provide documentation. NA
Projects -in Union County: Contact DWQ Central Office staff to check if the project is located within a Threatened &
Endangered Species watershed that may be subject to more stringent stormwater requirements as per NCAC 02B .0600.
V. SUPPLEMENT AND O&M FORMS
The applicable state stormwater management permit supplement and operation and maintenance (O&M) forms
must be submitted for each BMP specified for this project. The latest versions of the forms can be downloaded
from hU://h2o.enr.state.nc.us/su/bmp forms.hhn.
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. A detailed application instruction sheet and BMP
checklists are available from h"://h2o.enr.state,nc.us/su/bmp forms.htm. The complete application package
should be submitted to the appropriate DWQ Office. (The appropriate office may be found by locating project
on the interactive online map at http:/ /h2o.enr.state.nc.us/su/msi_maps.htm.)
Please indicate that the following required information have been provided by initialing in the space provided for
each item. All original documents MUST be signed and initialed in blue ink. Download the Iatest versions for
each submitted application package from htW://h2o.enr.state.nc.us/su/bml2 forms.htm.
Initials
1. Original and one copy of the Stormwater Management Permit Application Form.
2. Original and one copy of the signed and notarized Deed Restrictions & Protective Covenants AIAL
Form. (if required as per Part VII below)
3. OriginaI of the applicable Supplement Form(s) (§ealed, signed and dated) and O&M _131!jr
agreement(s) for each BMP. e)
4. Permit application processing fee of trpa-yable to NCDENR. (For an Express review, refer to 4p
M42 /f www,envheII2.org/12ages /ones to12exl2res5,htrrd for information on the Express program
and the associated fees. Contact the appropriate regional office Express Permit Coordinator for
additional information and to schedule the required application meeting.)
Form SWIJ-101 Version 07July2009 Page 4 of 7

AAV Company - Addendum to Basin Descriptions for Permit Application
Bai Ll alnformCap Ions
Dra1n_—ii Weffl5�l
tD"rAin- go 6M
Receiving Stream Name
New River
Stream Class
SA, HQW
_m
Drainage Area (sf)
23468
Existing Imp. Area (sf)
0
n_
Proposed Imp Area (sf)
23217
% Imp Total
98.9%
o
C�
°c
m Surface Area
^
°
On -Site Buildings (sf)
0
2 �
On -site Streets (sf)
0'
On-stie Parking (sf)
22118
On -Site Sidewalks (sf)
0
Other On -site (sf)
1099,
Off -site (sf)
0
i
Totall
23217

5, A detailed narrative (one to two pages) describing the stormwater treatment/management for gE(
the project. This is required in addition to the brief summary provided in the Project
Information, item 1.
6. A USGS map identifying the site location. If the receiving stream is reported as class SA or the
receiving stream drains to class SA waters within nh mile of the site boundary, include the 'A
mile radius on the map.
7. Sealed, signed and dated calculations. ^� /S17AV
8. Two sets of plans folded to 8.5" x 14" (sealed, signed, & dated), including:
a. Development/Project name.
b. Engineer and firm.
c. Location map with named streets and NCSR numbers.
d. Legend.
e. North arrow.
f. Scale.
g. Revision number and dates.
h. Identify all surface waters on the plans by delineating the normal pool elevation of
impounded structures, the banks of streams and rivers, the MHW or NHW line of tidal
waters, and any coastal wetlands landward of the MHW or NHW lines.
• Delineate the vegetated buffer landward from the normal pool elevation of impounded
structures, the banks of streams or rivers, and the MHW (or NHW) of tidal waters.
i. Dimensioned property/project boundary with bearings & distances.
j. Site Layout with all BUA identified and dimensioned.
k. Existing contours, proposed contours, spot elevations, finished floor elevations.
1. Details of roads, drainage features, collection systems, and stormwater control measures.
m. Wetlands delineated, or a note on the plans that none exist. (Must be delineated by a
qualified person. Provide documentation of qualifications and identify the person who
made the determination on the plans.
n. Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations.
o. Drainage areas delineated (included in the main set of plans, not as a separate document).
p. Vegetated buffers (where required).
9. Copy of any applicable soils report with the associated SHWT elevations (Please identify
elevations in addition to depths) as well as a map of the boring locations with the existing
elevations and boring logs. Include an 8.5"x11" copy of the NRCS County Soils map with the
project area clearly delineated. For projects with infiltration BMPs, the report should also
include the soil type, expected infiltration rate, and the method of determining the infiltration rate.
(Infiltration Devices submitted to WiRO: Schedule a site visit for DWQ to verify the SHWT prior
to submittal, [phone].)
10. A copy of the most current property deed. Deed book: Page No: A-
11. For corporations and limited liability corporations (LLC): Provide documentation from the NC — IV
Secretary of State or other official documentation, which supports the titles and positions held
by the persons listed in Contact Information, item 1a, 2a, and/or 3a per NCAC 2H.1003(e). The
corporation or LLC must be listed as an active corporation in good standing with the NC
Secretary of State, otherwise the application will be returned.
htW://www.secretary,state.nc.us/Corporations/CSearch.asi2x
V11. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
For all subdivisions, outparcels, and future development, the appropriate property restrictions and protective
covenants are required to be recorded prior to the sale of any lot. If lot sizes vary significantly or the proposed
BUA allocations vary, a table listing each lot number, lot size, and the allowable built -upon area must be provided
as an attachment to the completed and notarized deed restriction form. The appropriate deed restrictions and
protective covenants forms can be downloaded from
http;//.h2o.enr.state.nc.us/su/brnl2 forms.htm#deed restrictions. Download the latest versions for each submittal.
In the instances where the applicant is different than the property owner, it is the responsibility of the property
owner to sign the deed restrictions and protective covenants form while the applicant is responsible for ensuring
that the deed restrictions are recorded.
By the notarized signature(s) below, the permit holder(s) certify that the recorded property restrictions and
protective covenants for this project, if required, shall include all the items required in the permit and listed
on the forms available on the website, 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.
Form SW U-101 Version 071u1y2009 Page 5 of 7

VIII. CONSULTANT INFORMATION AND AUTHORIZATION
Applicant: Complete this section if you wish to designate authority to another individual and/or firm (such as a
consulting engineer and/or firm) so that they may provide information on your behalf for this project (such as
addressing requests for additional information).
Consulting Engineer:Bryan Dick, PE, PH _
Consulting Firm: AECOM
Mailing Address:701 Corporate Center Dr
City:Raleigh_
Phone: (919 ) 554-6254
Email:[e-mail] _
State:NC Zip:27607
Fax. (919 ) 854-6252
IX. PROPERTY OWNER AUTHORIZATION (if Contact Information, item 2 has been filled out, complete this
section)
I, (print or type name of person listed in Contact Information, item 2a) _ , certify that I
own the property identified in this permit application, and thus give permission to (print or type name of person
listed in Contact Information, item 1a) with (print or type name of organization listed in
Contact Information, item 1b) to develop the project as currently proposed. A copy of
the Iease agreement or pending property sales contract has been provided with the submittal, which indicates the
party responsible for the operation and maintenance of the stormwater system.
As the legal property owner I acknowledge, understand, and agree by my signature below, that if my designated
agent (entity listed in Contact Information, item 1) dissolves their company and/or cancels or defaults on their
lease agreement, or pending sale, responsibility for compliance with the DWQ Stormwater permit reverts back to
me, the property owner. As the property owner, it is my responsibility to notify DWQ immediately and submit a
completed Name/Ownership Change Form within 30 days; otherwise I will be operating a stormwater treatment
facility without a valid permit. I understand that the operation of a stormwater treatment facility without a valid
permit is a violation of NC General Statue 143-215.1 and may result in appropriate enforcement action including
the assessment of civil penalties of up to $25,000 per day, pursuant to NCGS 143-215.6.
Signature:
1,
a Notary Public for the State of
. do hereby certify that
Date:
County of
personally appeared
before me this _ day of , and acknowledge the due execution of the application for a
stormwater permit. Witness my hand and official seal,
SEAL
My commission
Form SWL:- 101 Version 071uly2009 Page 6 of 7
7MACR219 2010
BY: 7

X. APPLICANT'S CERTIFICATION
1, (print or type name of person listed in Contact Information, item 2) -Carl Baker, Deputeu Public Works Officer ,
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 the
applicable stormw�t,r rules und205A LNCAC 2H 1000, SL 2006-246 (Ph. 11- Post Construction) or SL 2008-211.
Signature: v Date:
a Notary Public for the State of , "i�(_F�rs •_ i, ; County of
do hereby certify that personally appeared
before me this day of and acknowledge -the due execution of the application for
a stormwater permit. Witness my hand and official seal,-----
ALICE A SONNETTE
Notary PLblic
Onslow County
State of North Carolina
IMY Commission Expires Oct 23, 201n
TEAL
vly commission expires
Form SWU-101 Version 07Ju1y2009 Page 7 of 7

STORMWATER MANAGEMENT PLAN
(MODIFICATION OF PERMIT #SW8 080907)
PREPARED FOR: MCS CAMP LEJEUNE
AAV COMPANY
COURTHOUSE RD
USMCB CAMP LEJEUNE
ONSLOW COUNTY, NC
DATE: 3-23- 10
AECOM, INC
701 CORPORATE CENTER DR., SUITE 475
RALEIGH, NC 27607
919-854-620D
PREPARED BY:
IAN JEWELL
CHECKED BY:
BRYAN M. DICK, PE, PH
�N CAR pz �i���
•��SSI • y `�.
. p �3�Sflo
035724 —
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MAR292110

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PROJECT DESCRIPTION/GENERAL INFORMATION
THIS DOCUMENT IS TO SERVE AS A MODIFICATION TO AN EXISTING PERMIT
(SWEI 080907) FOR THE MCB CAMP LEJEUNE - AAV PROJECT. THE EXISTING
PERMIT ACCOUNTED FOR SIX SAND FILTERS AND ASSOCIATED LEVEL SPREADER, FLOW
SPLITTER AND FILTER STRIPS. THIS MODIFICATION IS THE RESULT OF THREE
CHANGES, OUTLINED BELOW:
1. A PROPOSED IMPERVIOUS PARKING LOT HAS BEEN REMOVED DUE TO
UPDATED WETLANDS BOUNDARIES WHICH CONFLICT WITH THE PARKING LOT
LOCATION. AS A RESULT, PROPOSED SAND FILTER # 6 AND ITS ASSOCIATED
LEVEL SPREADER HAVE BEEN REMOVED FROM THE PROJECT. THE UPDATED
WETLAND BOUNDARY HAS BEEN JURISDICTIONALLY APPROVED BY THE
USACE.
2. DUE TO UPDATED WETLAND BOUNDARIES, THE LEVEL SPREADER OF
PROPOSED SAND FILTER #2 AND ITS ASSOCIATED FILTER STRIP HAVE BEEN
MOVED APPROXIMATELY SO AS NOT TO IMPACT THE REVISED WETLAND AREA.
THE UPDATED WETLAND BOUNDARY HAS BEEN JURISDICTIONALLY
APPROVED 13Y THE USACE_
3. THE BUILT UPON AREAS (BUA) OF TWO CONCRETE ENTRANCEWAYS/RAMPS
ARE NOT ABLE TO BE TREATED BECAUSE OF THE ELEVATION DIFFERENCE
BETWEEN THE TOP OF THE ENTRANCEWAYS AND THE EXISTING PARKING
LOTS TO WHICH THE ENTRANCEWAYS FLOW. THE PROPOSED PARKING LOTS
ARE HIGHER IN ELEVATION THAN THE EXISTING ADJACENT PARKING LOTS.
WHEN STORMFLOW FALLS ON THE PROPOSED ENTRANCEWAYS, IT WILL
FLOW TO THE ELEVATION OF THE EXISTING LOTS, WHICH ARE LOWER IN
ELEVATION THAN THE PROPOSED SAND FILTER NEARBY. THUS, THIS BUA
WILL. NOT BE ABLE TO BE TREATED BY ANY OF THE PROPOSED SAND
FILTERS. THE TOTAL BUA OF THESE TWO ENTRANCEWAYS IS 2229 SQUARE
FEET.
AT THE TIME OF THIS REPORT, SOME SITE WORK HAS BEEN COMPLETED.
FOLLOWING THE FIRST SUSPENSION OF WORK AS A RESULT OF DISCOVERING THAT THE
THE WETLANDS BOUNDARIES WERE INCORRECT, THE CONTRACTOR RE -MOBILIZED IN
SEPTEMBER 2009 AND COMPLETELY INSTALLED PRESCRIBED EROSION AND SEDIMENT
CONTROLS. THE SITE HAS BEEN ROUGH GRADED WITH STOCK -PILED FILL; THE
BUILDING PAD, TRAILER LAYDOWN AREA, AND NEW PARKING LOT WAS STAKED -OUT.
SANDFILTERS #1 AND #4 WERE EXCAVATED AND THEN PARTIALLY FILLED IN
PREPARATION FOR PIPE INSTALLATION. THE RETAINING WALL INSTALLATIONS ARE
75% COMPLETE. WHILE AWAITING APPROVED PERMIT REVISIONS, THE CONTRACTOR
HAS TAKEN ADDITIONAL EROSION CONTROL MEASURES WITH ADDITIONAL SEDIMENT
TRAPS AND CHECK -DAMS WHILE THE SITE IS VULNERABLE. NO UTILITY WORK HAS
BEEN PERFORMED TO DATE. IN ADDITION, NO WORK HAS BEEN PERFORMED IN THE
VICINITY OF THE AREAS AFFECTED BY THESE PERMIT REVISIONS (NOTABLY: THE
NORTHEAST CORNER OF THE PRE-ENGINEERED BUILDING (PEB), THE SMALL TACTICAL
PARKING LOT LOCATED IN THE SOUTHEAST PORTION OF THE SITE AND SANDFILTER #2,
LOCATED IN THE NORTHWEST CORNER OF THE SITE)_
THE AAV COMPANY PROJECT IS LOCATED OFF COURTHOUSE RD. ON CAMP
LEJEUNE MARINE CORPS BASE IN ONSLOW COUNTY, NC. ALTHOUGH NO SPECIFIC
TRACT CAN BE IDENTIFIED WITH THIS PROJECT (THE BASE IN ONE LARGE, CONTIGUOUS
PROPERTY) THE AREA BEING DISTURBED FOR THE PROJECT IS APPROXIMATELY 6_92
ACRES. THE PROJECT WILL 13E AVOIDING IMPACTS OF WETLANDS.

CONTACT INFORMATION
AECOM
ATTN: BRYAN M. DICK, PE, PH
701 CORPORATE CENTER DR., SUITE 475
RALEIGH, NC 27607
TELEPHONE: [phone]
FAX: [phone]
IDENTIFY PROJECT INVOLVEMENT
THIS PROJECT IS A PART OF THE WHITE OAK RIVER BASIN, AND IS CURRENTLY
NOT SUBJECT TO ANY BUFFER RULES. THE SITE IS APPROXIMATELY 2,500 FEET FROM
THE NEW RIVER AND APPROXIMATELY 417 FEET FROM COURTHOUSE BAY, JUST
OUTSIDE OF SNEADS FERRY, NC AND IS LOCATED IN ONSLOW COUNTY, WHICH IS AS
OF OCTOBER 1, 2008 IS SUBJECT TO THE COASTAL STORMWATER RULES. HOWEVER,
THE ORIGINAL PERMIT FOR THIS PROJECT WAS COVERED BY THE NPDES PHASE 11
STORMWATER RULES. THE NCDWQ STREAM CLASSIFICATION OF COURTHOUSE BAY
IS SA, HQW AND ITS NCDWQ INDEX NUMBER IS 19-36. THE STREAM
CLASSIFICATION OF THE NEW RIVER IS SA, HQW AND ITS INDEX NUMBER 1S 19-27.
THE PROPOSED PROJECT STORMWATER PLAN WILL MEET THE REQUIREMENTS
OF DETAINING THE 3.7 INCH RAINFALL EVENT FOR A PERIOD OF APPROXIMATELY 2
DAYS, PER THE REQUIREMENTS BY THE STATE AS REFERENCED FROM THE DWQ
STORMWATER MANUAL., JULY 2007. THE STORMWATER DESIGN IS HIGH DENSITY,
COASTAL STORMWATER. FIVE SAND FILTERS ARE PROPOSED TO TREAT FIVE SEPARATE
DRAINAGE AREAS. THE TOTAL PERCENT IMPERVIOUSNESS OF THE SITE IS 45.2%.
THIS PROJECT IS WITHIN 0.5 MILES OF SA WATERS AND THE USE OF INFILTRATION
DEVICES WAS REJECTED BY MR. VINCENT LEWIS ON BEHALF OF NC- DWQ. DUE TO
THE POOR INFILTRATING CONDITIONS ON THE SITE, SAND FILTERS ARE USED TO TREAT
THE DESIGN TREATMENT VOLUME. IN ORDER TO MEET PRE -POST REQUIREMENTS,
EACH BASIN DISCHARGES TO A DEPRESSIONAL AREA, USUALLY A WETLAND, TO
ENSURE THAT DOWNSTREAM RECEIVING WATERS ARE NOT ACTUALLY RECEIVING
DISCHARGE FROM THE SAND FILTERS DURING THE DESIGN STORM. TWO AREAS OF
BUILT -UPON AREA, WHICH ARE CONCRETE ENTRANCE RAMPS, WILL NOT BE COLLECTED
BY THESE SAND FILTERS DUE TO THE LIMITATIONS OF ELEVATION. THESE LIMITATIONS
ARE FURTHER DISCUSSED BELOW.
STORMWATER DESir-N PARAMETERS
THE SAND FILTERS ARE BASED ON THE FOLLOWING PARAMETERS OR
OBJECTIVES:
a PROVIDE 85% TSS REMOVAL
• PROTECT THE VALUE OF THE RECEIVING WATER RESOURCE
• 3.7" RAINFALL FOR BASIN STORAGE SIZING
• THE 1 YR RAINFALL DISCHARGE FROM THE FILTER MUST INFILTRATE BEFORE
REACHING SURFACE WATERS
• RATIO OF IMPERVIOUS SURFACE TO THE TOTAL AREA OF THE DRAINAGE AREA
7MAR 2 9 2010
RV

4 RAINFALL EXCEEDING THE DESIGN STORM WILL BYPASS THE BASINS AND FLOW
THROUGH A MINIMUM OF 50' LONG VEGETATED FILTER
DISCUSSION OF TREATMENT MEASURES
THE EXISTING PERMITTED TREATMENT IS TO UTILIZE FIVE SEPARATE SAND
FILTERS TO MEET THE TSS AND PEAK FLOW REQUIREMENTS SET FORTH BY DWQ.
BYPASS DEVICES ARE PROVIDED TO ALLOW ANY RUNOFF VOLUME THAT EXCEEDS THE
DESIGN STORAGE VOLUME TO BE ROUTED TO A LEVEL SPREADER WITH A VEGETATE❑
FILTER STRIP. THE LEVEL SPREADER LENGTH IS DESIGNED TO HANDLE THE 10 YR
PEAK RUNOFF RATE, SO NO BYPASS OF THE FILTER IS NECESSARY.
THIS MODIFICATION IS ADDRESSING THE ADJUSTMENTS OF CALCULATIONS AND
ELEVATIONS DUE TO THE INCREASE IN SIZE OF DRAINAGE AREAS AND AMOUNTS OF
IMPERVIOUS AREA FOR THE ASSOCIATED SAND FILTERS. SPECIFICALLY, TO INSURE
THE CORRECT VOLUME 15 HELD, THE FOREBAY BOTTOM ELEVATIONS HAVE BEEN
ADJUSTED FOR SAND FILTERS 2 AND 3. ALSO THE TOP OF THE SAND BED ELEVATIONS
HAVE BEEN ADJUSTED TO ACCOUNT FOR INCREASED VOLUME DUE TO IMPERVIOUS
AREA. THE ATTACHED PLANSHEETS DEPICT THE UPDATED DRAINAGE AREAS AND
ELEVATIONS.
CONCLUSION
THIS STORMWATER MANAGEMENT PLAN REPRESENTS AN ENVIRONMENTALLY
SENSITIVE AND EFFECTIVE PLAN FOR UTILIZING THE PROPOSED STORMWATER
TREATMENTS TO ACCOMMODATE THE INCREASED RUNOFF OF THE PROPOSED SITE
DEVELOPMENT.

ItrFAMWA
LARAF
r

Legend _
PAVED o as f 2 ��OM
UNPAVED h ile5
Vicinity Map
AAV Company
Interim Facility at Courthouse Bay
Camp Lejeune Marine Corps Base
Onslow County, NC

Perm+t Number._
(to be provided by DWQ)
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WDENR 401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, panted and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section III) and the 1&M Agreement (Section IV)
!. PRO.WT M :CNMT10M
Project name
AAV Company
Contact name
Bryan Dick
Phone number
919-65"252
Date
March 17, 2010
Drainage area number
2
L DESK! INFORMATION
Site Characteristics
Drainage area (Ao)
Impervious area
% Impervious (IA)
Design rainfall depth (R )
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Storage Volume
Design volume (WOV)
Adjusted water quality volume (WOVAd;)
Volume contained in the sedimentation basin and on top of the sand filter
Maximum head on the sedimentation basin and sand filter (hma,FMA,)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (R,)
Type of Sand Filter
Open sand fifteO
If this is an open sand filter: The clearance between the bottom of the sand
filter and the SHWT (d SHwr)
Closed/pre-cast sand filter?
If this is a closed sand filter: The clearance between the bottom of the sand
filter and the SHWT (ds,.IwT)
If this is a closed, underground closed sand filter The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (d5pac,)
26,932.00 ft2 OK
13,292.00 ft`
49.4% %
3.70 in
3.70 in
080 inlhr
0.14 ft3lsec
030 ft'/sec
0.16 ft'Isec
4,104.00 ft3
f3,32:2i
OK
�""
AcAUr4L -Y- o �
;s c0.lw�lakcl
—
CwiC S .
�... !Ioj NSF
� b o C �Q lr-ri
33i"1 —sce
L' +h; S cc l 1 use s
ft Insufficient depth. j
0.88 ft OK nMiAX
0.49 (unitless) + S rw.�
a e"t
N YorN
NA ft
Y YorN
2.00 ft
NA ft
Form SW401-Sand Filter-Rev.3
Parts I and II. Project Design Summary, Page 1 of 3

Permit Number.
(to be provided by DWO)
Sedimentation Basin
OK. Meets minimum, but may need to be increased to
Surface area of sedimentation basin (As) 384.00 fe contain the required volume if error under Storage
Volume section.
Sand Fitter
OK. Meets minimum, but may need to be increased to
Surface area of sand filter (AF) 1,504.00 ft' contain the required volume if error under Storage
Volume section.
Depth of the sand media filter bed (dF) 1.60 ft
Coefficient of permeability for the sand filter (k) 3.50 (fVday)
Time to drain the sand filter (t) 15.30 hours OK. Submit drainage calculations,
Time to drain the sand filter (t) 0.64 days
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Y
Y or N
OK
Is an off-line flow -splitting device used?
Y
Y or N
OK
Does volume in excess of the design volume flow evenly distributed through a
Y
Y or N
OK
vegetated filter?
What is the length of the vegetated filter?
50.00 ft
Does the design use a level spreader to evenly distribute flow?
Y
Y or N
OK
Is the BMP located at least 30ft from surface waters (50ft if SA waters)?
Y
Y or N
OK
Is the BMP located at least 100ft from water supply wells?
Y
Y or N
OK
Are the vegetated side slopes equal to or less than 3:1
Y
Y or N
OK
Is the BMP located in a recorded drainage easement with a recorded access
NA
Y or N
Insufficient ROW location.
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamberlforebay (Wsd)?
16,00 ft
OK
What is the depth of sand aver the outlet pipe?
1.04 ft
OK
Figure 1: Open Sand Filter
i:— Gwent -:And Filter-Flev_3 Parts I and U. Project Design Summary, Page 2 of 3

Figure 2: Closed Sand Filter
Permit Number.
(to be provided by DWQ)
Sedimentation
C h'-Unber
f or Forebarl
S.uid Filter
Chamber
Form SW401-Send Filter-Ray.3
Parts I and It. Project Design Summary, Page 3 of 3

Sand Filter Basin 2 Calculations
Originator: Andrew Wilson
Reviewer: Bryan Dick P.E.
Camp Lejeune AAV Platoon
Sand Fitter Basin 2
Step 1 Compute water quality volumes
Rv = 0.05+0.009(%Impervious)
Date: 3/17/10
Date:
SF Ac
Drainge Area (Sf)
26932
0.618
Imp Area (sf)
13292
0.305
% Imp
49
Rv = 0.49
Ad = 0.618 acres
Rd = 3.7 in
WQV (f13) = Rv * Ad (ac) *43,560 * Rd * 1/12
WQV = 4104 ft3
Min Required Volume WQVadj = (0.75)"WQV
WQVadj =13078 ft3
Step 2 Determine minimum filter bed and minimum sedimentation basin surface areas with
respect to water quality vofume.and maximum head
Sedimentation Basin Surface Area = As = 0.066*WQV
Min As = 271 ft2
Sand filter Bed surface Area = Af = (WQV*df)/((k)*(t)(ha+df))
df: Depth of sand filter bed = (Top of Bed El. - Filter Bottom El.) = 1.60 ft
k: coeff of permeability = 3.5 ft/day
t: time to drain sand filter tied = 1.66 days
ha: avg head = hmax/2 0.88 ft
hmax: maximum head = (Weir El. - Top of Bed El.) 11.76 ft
Min Af = 456 ft2
Step 3 Verlfy that WQVadj is -contained with miniumum surface areas,Revise areas if needed
Check water quality volume = (Af+As)*Hmax > WQVadj
Check Volume = 1279 WQVadj, Revise Total'
Required Af = (WQVadj/Hmax) - As
Required Af = 11471- ft2
Required Forebay Volume Vs = 0.2*WQVadj
Required Vs = 616 ft3
Step 4 Check besign Criteria
Design Forebay Area As = 16x24
384
Design Forebay Volume ft3
714
= As*(Weir El. - Forebay Bottom El.)
Design Sand Filter Area Af = 16x94
1504
Design Sand Filter Volume = Af * Hmax
2647
_
iTotal Treatdd Vol = Vol Filter +Vo . l Forebay
_
_3361
ft2 >Required As OK
21 % >Required Vs & 20% total volume OK
ft2 >Required Af OK
ft3' CY�
ft3 _ WQVadj OK
MAR 2 9 2010
BY:

;Design Elevations
Existing Ground Elevation = 7.00
Pipe Diameter + Pipe Wall Thickness = 0.35
Under Drain Pipe Invert Elevation = 6.21
Under Drain Pipe Crown Elevation = 6.56
Minimum Required Bed Elevation = 7.56 1ft required above pipe crown
Flow Splitter Elevations
Bypass Weir El. = 9.36
Flow Splitter - Inlet El. = 9.56
Flow 5 litter - Bypass = 6.80
Sand Filter Elevations
Sand Filter Bottom Elevation = 6.00
Sand Filter Top of Bed Elevation = 7.60
Sand Filter Under Drain Discharge Elevation = 6.00
Top of Concrete = 10.00
Forebay Elevations
Forebay Bottom Elevation = 7.60
Sediment Removal Elevation = 7.96 -25% of Vs
Additional Design Criteria ..
Depth to Exist grount to SHWT (ft) 3.00
Flow rate through filter media = (k*b36)1(24*60*60) = 0� 0 16i6 `,CFS Design = 0.49
Diameter at S=.005 and n=.011— 1.077 - — �24" pipes
Time to Drain WQV = volumel(rate(cfs)*60s*60mir 15.3 hrs

Permit Number.
(to be provided by D WQ)
i. z A-�`
p'
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
NCDENR 401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be filled out on line, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist {Section 111) and the 18M Agreement (Section IV)
.NPROJECTtINF,ORMATION ,� s
Project name AAV Company
Contact name Bryan Dick
Phone number 919-854-6252
Date
Drainage area number
September 1, 2008
3
II.q DESIGN lNF0RMATION
Site Characteristics
Drainage area (AD)
Impervious area
% Impervious (IA)
Design rainfall depth (Ro)
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pr"evelopment 1-yr, 24-hr runoff
Post -development 1-yr, 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Storage Volume
Design volume (WQV)
Adjusted water quality volume (WQVA61)
Volume contained in the sedimentation basin and on top of the sand filter
Maximum head on the sedimentation basin and sand filter (hµ,,Fk r)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (Rv)
Type of Sand Filter
Open sand filter?
If this is an open sand filter: The clearance between the bottom of the sand
filter and the SHWT (dam)
Closed/pre-cast sand filter?
If this is a closed sand filter: The clearance between the bottom of the sand
filter and the SHWT (dswrr)
If this is a closed, underground closed sand filter, The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (ds,,,)
Pnrm SW401-Sand Filter-Rev.3
16,024.00 f? OK
13,537.00 ftz
84.5% %
3.70 in
3.70 in
Ho inlhr
0.13 ft3lsec
0,25 ft3lsec
0.12 ft3lsec
5 AM E A3 5f t3 2 , F t'. — (iA�
v4t_. t'4f Zr on'LV USE
4,004.00 ft'
3,003.00 ft3
rly ►1a Fare
3,259.2 0K
.ArL
1.40 ft Insufficient depth. _ 33 Z S3 cc.
0.70 ft OK
0.81 (unidess)
N YorN
NA ft
Y YorN
2.50 ft
NA ft
7MA
C�YVED
R 2 S 2010
BY;
Parts I and It. Project Design Summary, Page 1 of 3

Permit Number:
(to be provided by DWQ)
Sedimentation Basin
OK. Meets minimum, but may need to be increased to
Surface area of sedimentation basin (As) 336.00 fe contain the required volume if error under Storage
Volume section.
Sand filter
OK. Meets minimum, but may need to be increased to
Surface area of sand filter (AF) 1,992.00 ftZ contain the required volume if error under Storage
Volume section.
Depth of the sand media filter bed (dr) 1.55 ft
Coefficient of permeability for the sand filter (k) 3.50 (ftlday)
Time to drain the sand filter (t) 11.50 hours OK. Submit drainage calculations.
Time to drain the sand filter (t) 0.48 days
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Y Y or N
OK
Is an off-line flow -splitting device used?
Y Y or N
OK
Does volume in excess of the design volume flow evenly distributed through a
Y Y or N
OK
vegetated ffter?
What is the length of the vegetated filter?
50.00 ft
Does the design use a level spreader to evenly distribute flow?
Y Y or N
OK
Is the BMP located at least 30ft from surface waters (Wit If SA waters)?
Y Y or N
OK
Is the BMP located at least 100ft from water supply wells?
Y Y or N
OK
Are the vegetated side slopes equal to or less than 3:1
Y Y or N
OK
Is the BMP located in a recorded drainage easementwith a recorded access
NA Y or N
Insufficient ROW location.
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chambertforebay (Wsm)?
24.00 ft
OK
What is the depth of sand over the outlet pipe?
1.00 ft
OK
Figure 1: Open Sand Filter
Form SW401•Sand Filter-Rev.3 Parts I and 11, Project Design Summary, Page 2 of 3

Figure 2: Closed Sand Filter
Permit Number.
(to be provided by DWQ)
Se.diluentltiou
Chwuber
(or Forebay.)
Satkci Filter
Chamber
MAR 2 9 20W
Fnrm Swans -Sand Fitter-Rev-3 Parts I and II. Project Oeaign Summary, Page 3 of 3

Sand Filter Basin 3 Calculations
Originator: Andrew Wilson
Reviewer: Bryan Dick P,E.
Camp Lejeune AAV Platoon
Sand Filter Basin 3
Step 1 Compute water quaiity volumes
Rv = 0.05+0.009(%Impervious)
Date: 3/17/10
Date:
SF Ac
Drainge Area (Sf)
16024
0.368
Imp Area (sf)
13537
0.311
% Imp
84
Rv = 0.81
Ad = 0.368 acres
Rd = 3.7 in
WQV (ft3) = Rv * Ad (ac) *43,560 * Rd * 1/12
WQV = 4004 ft3
Min Required Volume WQVadj = (0.75)*WQV
WQVadj =[3003 ft3
Step 2 Determine minimum fitter bed and minimum sedimentation basin surface areas with
respect to water quality volume and maximum head
Sedimentation Basin Surface Area = As = 0.066*WQV
Min As - 264 ft2
Sand filter Bed surface Area = Af = (WQV*df)/((k)*(t)(ha+df))
df: Depth of sand filter bed = (Top of Bed El. - Filter Bottom El.) = 1.55 ft
k: coeff of permeability = 3.5 ft/day
t: time to drain sand filter bed = 1.66 days
ha: avg head = hmax/2 0.675 ft
hmax: maximum head = (Weir El. - Top of Bed El.) 11.4 ft
Min Af = 480 ft2
Step 3 Verify that WQVadj is contained with miniumum surface areas, Revise areas ill needed
Check water quality volume = (Af+As)*Hmax > WQVadj
Check Volume = 1005 WQVadj, Revise Total Volume
Required At = (WQVadj/Hmax) - As
Required Af = 1960 ft2
Required Forebay Volume Vs = 0.2*WQVadj
Required Vs =,601 ft3 1
Step 4 Check Design Criteria
Design Forebay Area As = 14x24 336 ft2 >Required As OK
Design Forebay Volume ft3 638 19% >Required Vs & - 20% total volume OK
= As'(Weir El. - Forebay Bottom El.)
Design Sand Filter Area Af = 2083 1992 ft2 >Required Af OK
Design Sand Filter Volume = Af * Hmax_ _ 2689 _ ft3 _
Total Treated Vol = Vol Filter + Vol Forebay__ 3328 ft3 >WQVadj OK

Design Elevations
Existing Ground Elevation = 8.00
Pipe Diameter + Pipe Wall Thickness = 0.35
Under Drain Pipe Invert Elevation = 8.20
Under Drain Pipe Crown Elevation = 8.55
Minimum Required Bed Elevation = 9.55 1ft required above pipe crown
Flow Splitter Elevations
Bypass Weir El. = 10.90
Flow Splitter - inlet El. = 11.10
Flow Splitter - Bypass = 10.50
Sand Filter Elevations
Sand Filter Bottom Elevation = 8.00
Sand Filter Top of Bed Elevation = 9.55
Sand Filter Under Drain Discharge Elevation = 8.00
Top of Concrete = 12.00
Forebay Elevations
Forebay Bottom Elevation = 9.00
Sediment Removal Elevation = 9.47 -25% of Vs
`Additional Design Criteria
Depth to Exist grount to SHWT (ft) 2.50
Flow rate through filter media = (k"b36)/(24" 60'60) = �0_0$1 _ ; CFS Design = 0.49
Diameter at 5=.005 and n=.011 1.077 2-4" pipes
;Time to Drain WQV = volume/ (rate (cfs)'60s'60mir _11.5 hrs
E
��.2010

The
Catena
410-8 Millstone Drive
7% Hillsborough, NC 27278
[phone]
SOILS REPORT FOR
STORM WATER BASINS
AAV Site
Camp Lejeune, NC
Prepared For:
EarthTech
701 Corporate Center Drive
Suite 475
Raleigh, NC 27607
Prepared By:
The Catena Group
Hillsborough, North Carolina
April 14, 2008
Gary S. Kreiser

INTRODUCTION
The Marine Corps Base at Camp Lejeune plans an expansion of Amphibious Assault Vehicle Site (AAV).
As part of this expansion, several stormwater infiltration basins are proposed to infiltrate runoff from
adjacent impervious surfaces. As part of the application process, a soils investigation detailing soil type,
infiltration rate, and depth to seasonal high water table is required. The Catena Group, Inc (TCG) has
been retained to perform the soil investigations.
INVESTIGATION METHODOLOGY
Prior to the field investigation, the Onslow County Soil Survey was referenced to get an overview of the
possible soil series located in the study area. Around the AAV Site, there are two mapping units. Figure
1 presents the mapped soil series and the general location of the proposed infiltration basins where the
borings and infiltration tests were performed. Table i presents the soil series, map unit symbol and
taxonomic class.
Table 1 Soil Series, Map Unit Symbol, and Taxonomic Class
Map Unit Symbol
Soil Series/Map Unit
Name
Taxonomic Class
Ur
Urban Land
N/A
WaB
Wando
Thermic, coated Typic
Quartzipsamments
The field investigation was performed on March 11, and 27, 2008. Soil borings were made with a hand -
turned auger in the vicinity of the proposed infiltration basins. Observations of the landscape (slope,
drainage patterns, past use, etc.) as well as soil properties (depth, texture, structure, seasonal wetness,
restrictive horizons, etc.) to a depth ? 48 inches, when possible, were recorded. Soil color was
determined with a Munsell Soil Color Chart.
The rate of water entry into a soil is referred to as the infiltration rate. The infiltration rate into a soil
decreases with time mainly due to an increase in the soil water content and a decrease in the hydraulic
gradient. As infiltration continues, the rate of water entry into the soil reaches a constant value (steady
state condition) which is considered to be the same as the saturated hydraulic conductivity (KsAT) of the
soii. The KsAT was measured in the field and used to characterize the infiltration rate for each proposed
infiltration basin.
KsAT measurements were performed at each of the proposed infiltration basin using a constant -head
permeameter (Amoozemeter). Before any readings were recorded, the Amoozemeter was allowed to
equilibrate, typically 25 minutes.
Based on conversations with the designer of the proposed infiltration basins (Mr. Bryan Dick of Earth
Tech), construction of these basins would remove approximately 6 to 12 inches of topsoil. As such, the
KsAT measurements were performed around a depth of 12 inches in order to estimate the infiltration rate
at the new soil surface.
MAR 2 9 2010
BY:

A' 74
FINDINGS
Soil Type
Based on the borings in the vicinity of the proposed basins, it was determined that the majority of the soil
at the AAV Site was urban land with varying depths of sandy fill material over the naturally occurring
soil surface. There were two borings (Site i and Site 6) that the soil borings indicated that there was less
disturbance and were classified as the Wando soil series. Detailed boring logs for each boring are
attached.
"fable 2 presents each boring with a sail series determination. Determination of soil series was made
through a comparison of soil boring descriptions to the Natural Resources Conservation Service (MRCS)
Official Series Description (OSD) for the soil series that were mapped by the NRCS for this site.
Table 2 Soil Borin s and Soil Series Determination
Boring #
Soil Series Determination
Basin l
Wando
Basin 2
Urban Land 24" fill*
Basin 3
Urban Land 22" fill*
Basin 4
Urban Land 30 " fill*
Basin 5
Urban Land 30" fill*
Basin 6
Wando
*no determination of soil series due to fill material
Depth to Seasonal High Water Table
During the field investigation, the depth to the seasonal high water table (SHWT) was determined. Since
the soil was typically sandy, the determination of the SHWT was made through field indicators of
redoximorphic features or the presence of saturated soil. Table 3 presents the soil borings and the
determination of the SHWT.
Table 3 Boring and Depth to SHWT
Boring #
SHWT Determination (inches
below Surface
Basin 1
40
Basin 2
40
Basin 3
30
Basin 4
>48
Basin 5
40
Basin 6
30
The depth to the SHWT varied greatly around Basin 6. There is a large ditch (See Figure 1) that is near
the proposed basin location. Approximately 60 feet to the east of the test location, the depth to the SHWT
is only ,I 3 inches. During this investigation, the exact configuration of the basin was unknown. Due to
the variations in SHNVT, the proximity of the ditch and the uncertainties of the basin configuration it is
unknown if there will be a large enough area to fit a basin.

Infiltration Rate
Multiple saturated hydraulic conductivity tests were performed at each proposed infiltration basin. The
results for each test are shown below in Table 4. Data sheets for each hydraulic conductivity tests are also
attached. At each basin location, the geometric mean was taken and is presented in Table 4. The
geometric mean was calculated instead of the arithmetic mean, as it tends to dampen the effect of very
high or low values, which night bias the arithmetic mean if a straight average was calculated.
Table 4 Results of Saturated Hydraulic Conductivity Tests and Geometric Mean
Test Location
Test Number
Test Depth
(inches)
Measured KsAT
(in/hr)
Geometric
Mean in/hr
Basin 1
1
11.4
1.22
1.41
2
12.2
1.17
3
9.8
1.97
Basin 2
1
11.8
3.13
2.19
2
10.6
1.53
3
11.0
1.76
Basin 3
1
12.6
3.51
2.88
2
11.8
1.53
3
11.0
1.76
Basin 4
2.70
2
9 p
3.30
Basin 5
1
11.4
1.0
1.52
2
11.0
1.8
3
11.0
2.0
Basin 6
1
12.2
5.34
6.60
2
13.8
7.12
3
13.4
7.54
Since soil is inherently non-bomogeneous, field tests can often misrepresent the areal hydraulic
conductivity of a soil. Typically, field tests underestimate the saturated hydraulic conductivity of clayey
soil and overestimate it in sandy soils. As a result of this misrepresentation a "moderation factor" is
suggested to convert point saturated hydraulic conductivity to areal saturated hydraulic conductivity for
each proposed infiltration basin_ Since the soil is typically fine sand or loamy sand, a moderation factor
of 0.5 was used to correct for the potential of overestimating the infiltration rate. Table 5 presents the
saturated hydraulic conductivity geometric mean for each infiltration basin as well as a moderation factor
to get an area infiltration rate for each proposed infiltration basin.
Table 5 Geometric Mean, Moderation Factor and Areal Infiltration Rate for Each Basin
Test Location I Geometric Mean J Moderation Factor I Areal infiltration Rate
Basin 1
1.41
0.5
0.71
Basin 2
2.19
0.5
1.10
Basin 3
2.88
0.5
1.44
Basin 4
2.70
0.5
1.35
Basin 5
1.52
0.5
0.76
Basin 6
6.60
0.5
1.04

As shown in Table 5, the majority of proposed basin locations have an infiltration rate of 1 inch/hour or
greater with the only exceptions being Basin land 5. However, even with these lower infiltration rates for
Basin 1 and 5, these areas are still greater than the required 0.52 inch/hour.
CONCLUSIONS
The findings presented herein represent TCG's professional opinion based on our site and soils
evaluation. This report is provided to assist in the application for the infiltration basins by providing the
soil information. North Carolina DWQ must issue the final permit. Any concurrence with the findings in
this report would he made at that time.

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AAV Site
Camp Lejeune, NC
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Ditch
MRCS Soil Mapping Unit
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April 2008
Scale 1"=150'
Job No.: 7354
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O C({ 1 For NENR Use ONLY G�b
�VJ RevieaWer
North Carolina Department of Environment and Submit:
��� Natural Resources 1.30
NCDENR Request for Express Permit Review
a 7�_
Confirm:
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 (POF file) and vicinity man (same items effected in the application package
of the project location. Please include this form in the application package.
• Asheville Region -Alison Davidson 828-296-4698;alison.davidsonCafncmail.net
• Fayetteville or Raleigh Region -David tee 919-791-4203; david.leeOncmail,net
• Mooresville & -Patrick Grogan 704-663-3772 or patrick.grogan(r-Dncmail.net
• Washington Region -Lyn Hardison 252-946-9215 or lyn.hardison(r-nemail.net
• Wilmington Region -Janet Russell 910-350-2004 orianet.russell(ancmail,net
NOTE: Project application received after 12 noon will be stamped in the following work day.
Enter Related SW
Permits of request
SW
SW
SW
SW
SW
\� P� L ,k-'F�k
Project Name: USIVIC - AAV COMPANY County: ONSLOW
Applicant: CARL BAKER, DEPUTY PUBLIC WORKS OFFICER Company: MCt3 CAMP LEJEUNE
Address: BLDG 1005 MiCHAEL RD, City: MCB CAMP LEJEUNE, State: NC Zip: 28547-2521
Phone: [phone], Fax: _ _ _, Email: [e-mail]
Physical Location: 000THOU5E RD, USMCB CAMP LEJEUNE
Project Drains into 5A• HQW waters - Water classification WHITE OAK (for classification see-htip:iih2o.enr.state.nc.uslbimslreAorts/reportsWB.html)
Project Located in WHITE OAK River Basin. Is project draining to class ORW waters? IN , within Y2 mile and draining to class SA waters Y or within 1 mile
and draining to class HQW waters? Y
EngineerlConsuftant: BRYANNLDICK, PE Company: AECOM
Address: 701 CORPORATE CENTER DR. City: RALEIGH, State: NC Zip: 2776 7-_ C E i
Phone: [phone], Fax: [phone], Email: n.dick@aecom.00m
SECTION ONE: REQUESTING A SCOPING MEETING ONLY FF & 2010
❑ $coping Meeting ONLY ❑ : E DWQ, ❑ DCM, ❑ DLR, ❑OTHER: B�'XPf'r
S�
SECTION TWO: CHECK ONLY THE PROGRAM S) YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑ 401 Unit ❑ Stream Origin Determination::, # of stream calls - Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination: _ # of stream calls -- Please attach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear ft oracres)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® State Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other
❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW (Provide permit #)]
ElHigh Density -Detention Pond , # Treatment Systems El High Density -Infiltration — #Treatment Systems
❑ High Density-Bio-Retention _ # Treatment Systems [I High Density -SW Wetlands _ # Treatment Systems
❑ High Density -Other # Treatment Systems / ® MOD:❑ Major ® Minor ❑ Plan Revision ❑ Redev, Exclusion SW 80809D7 (Provide permil #I
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
❑ Land Quality ❑ Erosion and Sedimentation Control Plan with , acres to be disturbed.(CK # (for DENR use))
SECTION THREE - PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scooina and express meetina request
Wetlands on Site ® Yes ❑ No Butler Impacts: ❑ No ❑ YES: _acre(s)
Wetlands Delineation has been completed: ® Yes ❑ No Isolated wetland on Property ❑ Yes ❑ No
US ACOE Approval of Delineation completed: ® Yes ❑ No 404 Application in Process w/ US ACOE: ❑ Yes ❑ No Permit
Received from US ACOE ® Yes ❑ No
+s*ss*+++s+**+***********•ss++++*+++*+++++**s+***+*s++++Fqr DFNR use Orl{y+sas+ss*sss+s+++*++♦+*sss•ssssssss++s++s+++*stssss+s+*+*+++*
Fee Split for multiple permits: (Check # 1 Total Fee Amount
SUBMITTAL DATES
Fee
SUBMITTAL DATES
Fee
CAMA
$
Variance C1 Mai; ❑ Min)
1
$
SW (❑ HO, ❑ LD, ❑ Gen)
$
401.
$
LOS
$
Stream Deter—
$
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NCDENR EXPRESS March 2009 G1 t ` C#t 0 <) 'r\ P rr�L (V
ROT i o11C.s �o �'�t{�, .{,�
+1 ~ LA. Q0^ Pre' -<_AA

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MARINE CORPS BASE 1
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' - - - - - - O • gC4q - �' •6•:K�i INTERIM FACILITIES
AT COURTHOUSE SAY
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Contact Information
AECOM
Attn: Bryan M. Dick, PE, PH
701 Corporate Center Dr., Suite 475
Raleigh, NC 27607
Telephone: [phone]
Fax: [phone]
Identify Project Involvement
This project is a part of the White Oak River Basin, and is currently not subject to
any buffer rules. The site is approximately 2,500 feet from the New River and
approximately 417 feet from Courthouse Bay, just outside of Sneads Ferry, NC and is
located in Onslow County, which is as of October 1, 2008 is subject to the Coastal
Stormwater Rules. However, the original permit for this project was covered by the
NPDES Phase II Stormwater Rules. The NCDWQ Stream Classification of Courthouse
Bay is SA, HQW and its NCDWQ Index Number is 19-36. The Stream Classification of
the New River is SA, HQW and its Index Number is 19-27.
The proposed project stormwater plan will meet the requirements of detaining the
3.7 inch rainfall event for a period of approximately 2 days, per the requirements by the
State as referenced from the DWQ Stormwater Manual, July 2007. The Stormwater
Design is High Density, Coastal Stormwater. Five sand filters are proposed to treat five
separate drainage areas. The total percent imperviousness of the site is 45.2%. This
project is within 0.5 miles of SA waters and the use of infiltration devices was rejected by
Mr. Vincent Lewis on behalf of NC- DWQ. Due to the poor infiltrating conditions on the
site, sand filters are used to treat the design treatment volume. In order to meet pre -post
requirements, each basin discharges to a depressional area, usually a wetland, to
ensure that downstream receiving waters are not actually receiving discharge from the
sand filters during the design storm. Two areas of built -upon area, which are concrete
entrance ramps, will not be collected by these sand filters due to the limitations of
elevation. These limitations are further discussed below.
Stormwater Design Parameters
The sand filters are based on the following parameters or objectives:
• Provide 85% TSS removal
• Protect the value of the receiving water resource
• 37' rainfall for basin storage sizing
* The 1 yr rainfall discharge from the filter must infiltrate before reaching surface
waters
• Ratio of impervious surface to the total area of the drainage area
• Rainfall exceeding the design storm will bypass the basins and flow through a
minimum of 50' long vegetated filter

Proiect Description/General Information
This document is to serve as a modification to an existing permit (SW8 080907)
for the MCB Camp Lejeune -- AAV project. The existing permit accounted for six sand
filters and associated level spreader, flow splitter and filter strips. This modification is
the result of three changes, outlined below:
1. A proposed impervious parking lot has been removed due to updated
wetlands boundaries which conflict with the parking lot location. As a result,
proposed Sand Filter # 6 and its associated level spreader have been
removed from the project. The updated wetland boundary has been
jurisdictionally approved by the USACE.
2. Due to updated wetland boundaries, the level spreader of proposed Sand
Fitter #2 and its associated filter strip have been moved approximately so as
not to impact the revised wetland area. The updated wetland boundary has
been jurisdictionally approved by the USACE.
3. The built upon areas (BUA) of two concrete entrancewayslramps are not able
to be treated because of the elevation difference between the top of the
entranceways and the existing parking lots to which the entranceways flow.
The proposed parking lots are higher in elevation than the existing adjacent
parking lots. When stormflow falls on the proposed entranceways, it will flow
to the elevation of the existing lots, which are lower in elevation than the
proposed sand filter nearby. Thus, this BUA will not be able to be treated by
any of the proposed sand filters. The total BUA of these two entranceways is
2229 square feet.
At the time of this report, some site work has been completed. Following the first
suspension of work as a result of discovering that the the wetlands boundaries were
incorrect, the contractor re -mobilized in September 2009 and completely installed
prescribed erosion and sediment controls. The site has been rough graded with stock-
piled fill; the building pad, trailer laydown area, and new parking lot was staked -out.
Sandfilters #1 and #4 were excavated and then partially filled in preparation for pipe
installation. The retaining wall installations are 75% complete. While awaiting approved
permit revisions, the contractor has taken additional erosion control measures with
additional sediment traps and check -dams while the site is vulnerable. No utility work
has been performed to date. In addition, no work has been performed in the vicinity of
the areas affected by these permit revisions (notably: the northeast corner of the pre-
engineered building (PEB), the small tactical parking lot located in the southeast portion
of the site and Sandfilter #2, located in the northwest corner of the site).
The AAV Company Project is located off Courthouse Rd. on Camp Lejeune
Marine Corps Base in Onslow County, NC. Although no specific tract can be identified
with this project (the base in one large, contiguous property) the area being disturbed for
the project is approximately 6.92 acres. The project will be avoiding impacts of
wetlands.

Discussion of Treatment Measures
The existing permitted treatment is to utilize five separate sand filters to meet the
TSS and Peak Flow requirements set forth by DWQ. Bypass devices are provided to
allow any runoff volume that exceeds the design storage volume to be routed to a level
spreader with a vegetated filter strip, The level spreader length is designed to handle
the 10 yr peak runoff rate, so no bypass of the filter is necessary.
This modification is addressing a portion of the stormflow that will be produced from this
project and that is not able to be treated due to constraints of elevation. Specifically,
there are two concrete entranceways that connect to existing parking lots which are at a
lower elevation than the invert of the sand filters. As such, the stormflow coming off the
entranceways flows into the existing parking lot. In addition, a level spreader and
associated filter strip had to be moved to account for updated wetlands boundaries. The
attached plansheets depict the updated wetland boundaries and the modifications that
have occurred.
Conclusion
This Stormwater Management Plan represents an environmentally sensitive and
effective plan for utilizing the proposed stormwater treatments to accommodate the
increased runoff of the proposed site development.

Russell, Janet j Jtt.�:c1.� `/'r-a"-J
From: Jewell, Ian [Ian,[e-mail]] MAR C , 2010
Sent: Monday, March 01, 2010 9:20 AM
To: Russell, Janet BY:
Cc: Dick, Bryan; [e-mail]
Subject: FW: Responses to Express request submittal
Attachments: AAV 103352 Stormwater Management Plan 2-23-10.pdf; C-4 POV 1 Parking Grading
Plan.PDF; C-6 POV 2 Parking Grading Plan.PDF; C-8 Admin & Supply Building Grading
Plan.PDF
Hi Janet,
Below are the responses to your request for more clarification. When Bryan was gone, l sent him this message so that
he could send it to you but it looks like,his email somehow autoarchived the message before he was able to read it. He
has asked me to go ahead and send the materials to you. Please let us know if there are any more questions.
1. How much (square feet) bua are you proposing to be untreated in this proposal?
2229 sf of bua are not being treated. This is the combined square footage of two concrete entranceways.
2. Confirm that the proposed parking lot adjacent to Sand Filter #6 been eliminated because of the new, updated
wetland delineation. Sand Filter #6 eliminated?
The proposed parking lot adjacent to Sand filter #6 and Sand Filter #6 have been eliminated due to the updated
jurisdictionally approved wetland boundaries.
3. Which sand filter has the level spreader and filter strip that will be moved?
Sand filter #2 has the level spreader and filter strip that will be moved due to the updated wetland boundaries.
4. Please update the project narrative. If any site work has been done under the current stormwater permit,
please describe the extent. Please correct the note that the project is 2000 feet from Courthouse Bay. The
project appears to be 200-400' from the mean high water line. There is a 30' buffer requirement from surface
waters under the NPDES Phase II rules. The narrative was correct in September, 2008 in the description of the
project being subject to the NPDES Stormwater Rules. However, note that Camp Lejeune is now subject to the
Coastal Stormwater Rules which became effective October 1, 2008. This should not affect modification of this
ro6ect under the older rules but the way the narrative is worded could be confusing to the reader. Normally,
an arbitrary "project area" is established using bearings and distances on Camp Lejeune. Though arbitrary, this
seems to be the only way to determine density and assure DENR that the same areas are not being used as
green open space for more than one project. See the attachment, Stormwater At Camp Lejeune for a better
explanation.
The project narrative has been updated with the requested changes.
S. We are unable to locate a drainage area map or a set of sealed calculations in our file. These may be requested
as part of the stormwater submittal package.
A set of drainage area maps from the original permit submittal is been attached for your files.
Ian Jewell
D 919.854,6254

MAR 0 1 2010
BY- —
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'ROJECT SITE
Legend Vicinity Map
PAVED a a,s 1 2 AAECOMAAV Company
Miles
---- UNPAVED_ Interim Facility at Courthouse Bay
RGY��� Camp Lejeune Marine Corps Base
FEB 1 8 2010 Onslow County, NC
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NEW RIVER INLET AC0
AAV Company
Interim Facility at Courthouse Bay
Camp Lejeune Marine Corps Base
o t'000 2.000 a,--- FEB 1 8 2010 Onslow County, NC
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EHNR - ENVIRONMENTAL MANAGEMENT 2B .0300
.0312 WHITE OAK RIVER BASIN
Classification
Name of Stream Description Class Date Index No.
Haws Run
Tank Creek
Hicks Run (Hickory Run)
Southwest Creek
Mill Run
Morgan Bay
Lewis Creek
Wallace Creek
Bearhead Creek
Beaverdam Creek
Town Creek
Farnell Bay
Cogdels Creek (Coglin
Creek)
Frenchs Creek
Jumping Run
Cowhead Creek
Duck Creek
Whitehurst Creek
NEW RIVER
Goose Creek
Two Pole Branch
Stones Bay
Mill Creek
Muddy Creek
Stones Creek
Millstone Creek
New River Restricted
Area # 1
Everett Creek
Ellis Cove
Sneads Creek
Fannie Creek
Wheeler Creek
Courthouse Bay
New River Restricted
Area # 2
From source to Southwest Creek
From source to Southwest Creek
From source to Southwest Creek
From Mill Run to New River
From source to Southwest Creek
Entire Bay
From source to New River
From source to New River
From source to Wallace Creek
From source to Wallace Creek
From source to New River
Entire Bay
From source to New.River.
From source to New River
From source to Frenchs Creek
From source to Frenchs Creek
From source to New River
From source to New River
From a line extending across New River
from Grey Point to a point of land
approximately 2200 yards downstream
from mouth of Duck Creek to Atlantic
Ocean; including all unnamed bays,
creeks, and other waters except
restricted areas # 1 and # 2 described
below.
From source to New River
From source to New River.
Entire Bay
From source to Stones Bay
From source to Stones Bay
From source to Stones Bay
From source to Stones Creek .
All waters within 1,000 yards of
earthen dock at the United States
Marine Corps Rifle Range
From source to New River
Entire Cove
From source to Ellis Cove Bay
From source to New River
From source to New River
Entire Bay
All waters within a line beginning at
the Government Dock in from of U.S.
Coast Guard Detachment Barracks at
Marines and running a southwest
course 1,000 yards to Channel Marker
#13, thence a southeasterly course
C NSW
C NSW
C NSW
C HQW NSW
SC NSW
SC NSW
SC HQW NSW
SB NSW
SB NSW
SB NSW
SC HQW NSW
SC NSW
SC NSW
SC NSW
SC NSW
SC NSW
SC NSW
Sc HQW NSW
SA
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1-91
8/1/91
8/l/91
8/1/91
8/1/91
8/1/91
6/1/60
19-17-4
19-17-5
19-17-6
19-17-(6.5)
19-17-7.
19-18
19-19
19-20
19-20-1
19-20-2
19-21
19-22
19-23
19-24
19-24-1
19-24-2
19-25
19-26
19-(27)
SC HQW
8/l/90
19-28
SC HQW
8/1/90
19-29
SA
6/1/56
19-30
$A
6/l/56
19-30-1
SA
6/1/56
19-30-2
SA,
6/l/56
19-30-3
SA
6/1/56
19-30-3-1-
SC
6/1/56
19-31
SA
6/l/56
19-32
SA
6/l/56
19-33
SA
6/1/56
19-33-1
SA
6/l/56
19-34
SA
6/l/56
19-35
SA
6/1/56
19-36
SC
6/1/56
19-37
2

Proiect Description/General Information
This document is to serve as a modification to an existing permit (SW8' 080907)
for the MCB Camp Lejeune — AAV project. The existing permit accounted for the sand
filters and associated level spreader, flow splitter and filter strips. This 'mod is a result
of the elimination of the impervious parking lots and its associated sand,filter, addition of
two concrete entrances that cannot be treated and moving one level spreader and filter
strip. Wetland boundaries are updated on this mod and have been jurisdictionally
approved by the USACE.
The AAV Company Project is located off Courthouse Rd. on Camp Lejeune
Marine Corps Base in Onslow County, NC. Although no specific tract can be identified
with this project (the base in one large, contiguous property) the area being disturbed for
the project is approximately 6.92 acres. Of these, no acres are in wetlands as the
project will be avoiding impacts of wetlands.
Contact Information
AECOM
Attn: Bryan M. Dick, PH
701 Corporate Center Dr., Suite 475
Raleigh, NC 27607
Telephone: [phone]
Fax: [phone]
300-two I
This project is a pa of the White Oak River Basin, and is currently not subject to
any buffer rules. The site is approximately 2,500 feet from the New River and about
2,000 feet from Courthouse Bay, just outside of Sneads Ferry, NC and is located in
Onslow, County, which is a Phase II — NPDES Requirement County. The NCDWQ
Stream Classification of Courthouse Bay is SA, HQW and its NCDWQ Index Number is
19-36. The StreamlClassification of the New River is SA, HQW and its Index Number is
19-27.
The pro6osed project stormwater plan will meet the requirements of detaining the
3.7 inch rainf I event for a period of approximately 2 days, per the requirements by the
State as ref renced from the DWQ Stormwater Manual, July 2007. The Stormwater
Design is igh Density, Coastal Stormwater. Six sand i�er a e used to treat 6
separate rainage areas. The total percent imperviousness of the site is 45.2%. This
project i within 0.5 miles of SA waters and the use of infiltration devices was rejected by
Mr. Vi cent Lewis on behalf of NC- DWQ. Due to the poor infiltrating conditions on the
site, and filters are used to treat the design treatment volume. In order to meet pre -post
re irements, each basin discharges to a depressional area, usually a wetland, to
ensure that downstream receiving waters are not actually receiving disc arge-Fromm- he
Pees FEB 1 8 2010
W

sand filters during the design storm. Two areas of built -upon area, which are concrete
entrance ramps, will not be collected by these sand filters due to the limitations of
elevation. These limitations are further discussed below.
Stormwater Design Parameters
The sand filters are based on the following parameters or objectives:
• Provide 85% TSS removal
• Protect the value of the receiving water resource
• 3.7" rainfall for basin storage sizing
• The 1 yr rainfall discharge from the filter must infiltrate before reaching surface
waters
• Ratio of impervious surface to the total area of the drainage area
• Rainfall exceeding the design storm will bypass the basins and flow through a
minimum of 50' long vegetated filter
Discussion of Treatment Measures
The existing permitted treatment is to utilize 6 separate sand filters to meet the
TSS and Peak Flow requirements set forth by DWQ. Bypass devices are provided to
allow any runoff volume that exceeds the design storage volume to be routed to a level
spreader with a vegetated filter strip. The level spreader length is designed to handle
the 10 yr peak runoff rate, so no bypass of the filter is necessary.
This modification is addressing a portion of the stormflow that will be produced from this
project and that is not able to be treated due to constraints of elevation. Specifically,
there are two concrete entranceways that connect to existing parking lots which are at a
lower elevation than the invert of the sand filters. As such, the stormflow coming off the
entranceways flows into the existing parking lot. In addition, a level spreader and
associated filter strip had to be moved to account for updated wetlands boundaries. The
attached plansheets depict the updated wetland boundaries and the modifications that
have occurred.
Conclusion
This Stormwater Management Plan represents an
effective plan for utilizing the proposed stormwater
increased runoff of the proposed site development.
environmentally sensitive and
treatments to accommodate the
k