SW8051018_CURRENT PERMIT_20200710

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO. SW8 D 5
DOC TYPE CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE Zoe b o7l D
YYYYMMDD

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
BRIAN WRENN
Director
July 10, 2020
NORTH CAROLINA
Environmental Quality
United States Marine Corps Camp Lejeune
Attn: Mr. Neal Paul
1005 Michael Road
Camp Lejeune, NC 28547
Subject: Permit Renewal
State Stormwater Management Permit No. SW8 051018
Tarawa Terrace Il
Onslow County
Dear Mr. Paul:
The Wilmington Regional Office received a complete 8 year Stormwater Management Permit Renewal Application for
the subject project on June 2, 2020. The Division is hereby notifying you that permit SW8 060137 has been renewed on
July 10, 2020, and shall be effective until December 13, 2027. For your records, please find enclosed a renewed,
updated, and re -issued permit and a copy of the renewal application. Please keep this permit on file at all times. Please
note that the renewed, updated, and re -issued permit does not impose new or different terms; it merely restates some of
the previous terms to provide you with a better understanding of your obligations under the permit.
The renewal and reissuance of this stormwater permit does not imply that the site is currently in compliance with the
terms and conditions of this state stormwater permit. The plans originally approved on December 13, 2005 and most
recently revised on October 17, 2008, will remain in full force and effect in accordance with the regulations set forth in
Title 15A NCAC 2H.1000.
This permit is subject to the conditions and limitations as specified therein. Please pay special attention to the
conditions listed in this permit regarding the Operation and Maintenance of the BMP(s), recordation of deed
restrictions, procedures for changes of ownership, transferring the permit, and renewing the permit. Failure to establish
an adequate system for operation and maintenance of the stormwater management system, to record deed restrictions,
to transfer the permit, or to renew the permit, 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 by filing a written petition with the Office of Administrative Hearings (OAH). The written
petition must conform to Chapter 150B of the North Carolina General Statutes, and must be filed with the OAH within
thirty (30) days of receipt of this permit. You should contact the OAH with all questions regarding the filing fee (if a
filing fee is required) and/or the details of the filing process at 6714 Mail Service Center, Raleigh, NC 27699-6714, or
via telephone at 919-431-3000, or visit their website at www.NCOAH.com. Unless such demands are made this permit
shall be final and binding.
If you have any questions, need additional copies of the permit or approved plans, please contact Daniel Sams in the
Wilmington Regional Office, at [phone] or [e-mail].
Sincerely,
�J
Brian or Wrenn, Direc
Division of Energy, Mineral and Land Resources
Enclosures: Attachment C — Permitting history
Renewal Application Documents
DES/dan:111Storr.7waterlPermits & Proiects120201051018 HD12020 07 permit 051018
cc: Wilmington Regional Office Stormwater File
D �� North Carolina Department of Environmental Quality I Division of Energy, Mineral and Land Resources
Wilmington Regional Office 1 127 Cardinal Drive Extension I Wilmington, North Carolina 28405
NOIiTN GROUNA �
910,796.7215

State Stormwater Management Systems
Permit No. SW8 051018
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
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
United States Marine Corps
Tawara Terrace 11
Tarawa Blvd, Camp Lejeune, Onlsow County
FOR THE
construction, operation and maintenance of five wet detention ponds in compliance with
the provisions of 15A NCAC 2H .1000 and Session Law 2006-246, as applicable
(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 Energy, Mineral and Land Resources and
considered a part of this permit.
This permit shall be effective from the date of issuance until December 13, 2027, 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 1.7 of this permit. The stormwater control systems
have been designed to handle the runoff from a total of 3,565,824 square feet of
impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.7
on page 3 of this permit, and per approved plans. There is no allotment for
future built -upon area at the site.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 1 of 4

State Stormwater Management Systems
Permit No. SW8 051018
6. The built -upon areas associated with Phases 5 and 6 of this project shall be
located at least 30 feet landward of all perennial and intermittent surface waters.
7. The following design criteria have been provided in the wet detention ponds and
must be maintained at design condition:
Design Criteria
Tarawa
Boy Scout
Phase 5
Phase 5
Phase 6
Blvd..
Camp Rd.
North
South
Pond
Pond
Pond
Pond
Pond
a. Drainage Area, acres:
80.85
37.6
28.4
14.93
39.4
Onsite, ft2:
3,018,795
1,637,709
1,237,104
650,351
1,716,264
Offsite, ftz:
503,031
None
None
None
None
b. Total Impervious Surfaces, ftz:
1,473,105
687,063
514,008
246,560
645,088
Onsite Buildings, ft2:
439,900
304,350
273,240
34,774
373,660
Onsite Streets, ft2:
297,390
193,082
188,014
35,263
203,244
Onsite Parking/Driveways, ftz:
150,660
101,420
2,280
None
10,500
Onsite Sidewalks, ft2:
68,168
44,600
50,474
3,103
57,684
Other Onsite, ft2:
13,956
43,611
None
173,420
None
Offsite, ftz:
503,031
None
None
None
None
c. Pond Depth, ft:
5.4
5.0
5.25
5.25
5.62
(average design depth, ft
3.7
3.4
4.0
d. TSS removal efficiency:
90
90
90
90
90
e. Design Storm, inches:
1.0
1.0
1.5
1.5
1.5
f. Permanent Pool Elevation, FMSL:
11 A
9.5
13.0
18.0
15.0
g. Permanent Pool Surface Area, ft2:
130,181
51,831
48,251
341491
66,137
h. Permitted Storage Volume, ft3:
159,439
58,690
66,245
39,582
86,206
i. Tem ors Storage Elevation, FMSL:
12.6
10.54
14.24
19.0
16.14
j. Predevelopment 1-yr 24-hr
nla
nla
20.56
27.22
28.37
discharge rate, ft31s:
k. Controlling Orifice, "O:
6.0
4.0
3.5
2.5
4
I. Post development treatment volume
nla
nla
0.26
0.12
0,32
discharge rate, ft31s:
m. Permanent Pool Volume, ft3:
555,343
158,557
179,024
118,266
265,091
n. Permitted Forebay Volume, ft3:
121,175
38,442
38,364
22,573
53,821
o. Max. Fountain Horsepower, HP:
2
112
314
113
1
p. Receiving StreamlRiver Basin:
Northeast Creek 1 White Oak
q. Stream Index Number:
19-16- 3.5
r. Classification of Water Body:
SC HQW NSW
II. SCHEDULE OF COMPLIANCE
The stormwater management system shall be constructed in its entirety, vegetated
and operational for its intended use prior to the construction of any built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of the
system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary to
assure the permitted stormwater system functions at optimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
Page 2 of 4

State Stormwater Management Systems
Permit No. SW8 051018
f. Debris removal and unclogging of outlet structure, orifice device, flow
spreader, catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to
authorized personnel of DWQ. The records will indicate the date, activity, name of
person performing the work and what actions were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system, as
the permanent pool volume is less than 30,000 cubic feet.
6. The facilities shall be constructed, operated and maintained in accordance with the
provisions of this permit, the approved plans and specifications, and the supporting
documents attached to this permit and on file with the Division.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy, and
prior to operation of this permitted facility, a certification must be received from an
appropriate designer for the system installed certifying that the permitted facility has
been installed in accordance with this permit, the approved plans and specifications,
and other supporting documentation, Any deviations from the approved plans and
specifications must be noted on the Certification. A modification may be required for
those deviations.
If the stormwater system was used as an Erosion Control device, it must be restored
to design condition prior to operation as a stormwater treatment device, and prior to
occupancy of the facility.
9. Access to the stormwater facilities shall be maintained via appropriate easements at
all times.
10. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project area.
The project area is defined as all property owned by the permittee, for which
Sedimentation and Erosion Control Plan approval or a CAMA Major permit
was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
11. The permittee shall submit final site layout and grading plans for any permitted future
areas shown on the approved plans, prior to construction.
12. A copy of the approved plans and specifications shall be maintained on file by the
Permittee for a minimum of ten years from the date of the completion of construction.
13. The Director may notify the permittee when the permitted site does not meet one or
more of the minimum requirements of the permit. Within the time frame specified in
the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide copies
of revised plans and certification in writing to the Director that the changes have been
made.
Page 3 of 4

State Stormwater Management Systems
Permit No. SW8 051018
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. The permittee shall submit a completed and signed "Permit
Transfer Application Form" (available on the Division website) accompanied by the
required fee and supporting documentation as listed on the form, to the Division at
least 60 days prior to any one or more of the following events:
a. The sale or conveyance of the project area in whole or in part, except in the
case of an individual lot sale that is made subject to the recorded deed
restrictions and protective covenants;
b. Dissolution of the partnership, corporate, or LLC entity, subject to NCGS 55-
14-05 or NCGS 57D-6-07 and 08;
c. Bankruptcy;
d. Foreclosure, subject to the requirements of Session Law 2013-121.
2. Any individual or entity found to be in noncompliance with the provisions of this
stormwater management permit or the requirements of the Stormwater rules is
subject to enforcement procedures as set forth in NCGS 143 Article 21.
3. The issuance of this permit does not preclude the Permittee from complying with any
and all statutes, rules, regulations, or ordinances, which may be imposed by other
government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement stormwater management systems.
5. The permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit issued shall continue in force and effect until the permittee files a request
with the Division for a permit modification, transfer, renewal, or rescission; however,
these actions do not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference and
are enforceable parts of the permit.
9. A permit renewal request must be submitted at least 180 days prior to the expiration
date of this permit. The renewal request must include the appropriate application,
documentation and the processing fee as outlined in Title 15A NCAC 02H.1045(3).
Permit issued this the 9th day of July 2020.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
n, :2
.�X, Brian Wrector
Division of Energy. Mineral and Land Resources
By Authority of the Environmental Management Commission
Page 4 of 4

I1FMI H t1,F (1NI Y
Date Received
I Fee Paid
Permit Number
` o o
Swa-05-I61g, 0 Sas
ELc1 $ OSto l
NC DEG Division of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM
In accordance with 15A NCAC 2H.1045 3 , the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60. (c). This application form is for permit renewals only.
A. PROJECT INFORMATION
1. State Stormwater Permit Number: SW8 051018
2. Project name: Tarawa Terrace II Housing
3. Project street address: XXX
City: MCB Camp Leieune County: Onslow
ZIP: 28542
4. What, if any, changes have been made to the project as permitted? N/A
If the project has changed from the original approved plans, please complete SWU-101 fora Major
Modification or Minor Modification Application form available at: https://deg.nc.gc v/aboui/divisions/energy
mineral-land-resources/ener -mineral-land-rules/stormwater- ro ram/ ost-construction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https://deg.nc.gov/about/divisions/energy-mineral-land-
resources/energy-mineral-land-rules/stormwater-program_ /post -construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: MCB Camp Lejeune
2. Signing Official's Name: Neal Paul
3. Signing Official's Title: Deputy Public Works Division
4. Mailing Address: MCB Camp Lejeune 1005 Michael Rd.
City: MCB Camp
ZIP : 28547-2521
S. Street Address:
State: NC
City: State: ZIP:
6. Phone: [phone] Email: [e-mail]
JUN 0 i
BY:
7
Stormwater Permit Renewal Form Page 1 of 3 May 1 ,

C. SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional „Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW%ORW). Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to indicate that the required information is provided in the application package:
1. A permit application processing fee of $505.00 payable to NCDEQ.
A 2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sole proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
3. One hard copy and one electronic copy of recorded documents required by the original permit that
have not yet been received by DEMLR, including: deed restrictions, protective covenants,
condominium/planned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
4. O&M Agreements, Please select one:
® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
5. Designer Certifications, Please select one:
® A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
6. [IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC):
Provide one hard copy and one electronic copy of documentation from the NC Secretary of State,
or other official documentation, which supports the titles and positions held by the persons listed in
Section C.2 per 15A NCAC 2H. 1043(3)(b).
https://www.sosnc.gov/online_ services/search/by title/ Business Registration
EC`I%.r,z
8Y:
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PERMI EFS CERTIFICATI N
the person legally responsible for the permit, certify that I have
a copy of the Permit and O& greement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my
knowledge, correct and e.
Signature: Date: 3A10-6
this the ©� day
execution 04hodpwing instrument. Witness my hand and official seal,
W
No ilSignIqAIS
► 1
My co`O 4zew)p IVA b
N a►►
a Notary Public for the State of
do hereby certify
personally appeared before me
20J�, and acknowledge the due
JOIN
BY.
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

D. PERMITTEE'S CERTI JCATiON
the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All information provided on this permit renewal application is, to the best of my
knowledge, corr ct and completes
L
Signature: 9, Date: �
a Notary Public for the State of
do hereby certify
personally appeared before me
this the ;z!2.i day of 120_, and acknowledge the due
execu`iP,pi the forgoing instrument. Witness my hand and official seal,
(N ea19'�
00TgRy
i{aAcv Signatur����`i
JU14 0 2 w {�
BY:
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

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Attachment C - Permitting History
Tarawa Terrace II
Permit No. SW8 051018
Approval
Date
Pennit Action
B1MS
Version
Description of the Changes
12/13/2005
Original
Approval
1.0
Permit includes two wet ponds
10/17/2008
Major
Modification
1.1
Permit expands to five wet ponds
7/30/2009
Transfer
1.2
Ownership clarification to MCB
7/10/2020
Renewal
2.0
New expiration is 12/13/2027
Page 1 of 1

Central Files: APS — SWP
7/10/2020
Permit Number SW8051018
Permit Tracking Slip
Program Category
Status Project Type
State SW
Active Renewal
Permit Type
Version Permit Classification
State Stormwater
2.00 Individual
Primary Reviewer
Permit Contact Affiliation
dan.sams
Coastal SWRule
Coastal Stormwater - 1995
Permitted Flow
Facility
Facility Name
Major/Minor Region
Tarawa Terrace Two Housing Replacement
Minor Wilmington
Location Address
County
Tarawa Ter II
Onslow
Facility Contact Affiliation
Camp Lejeune NC 28547
Owner
Owner Name
Owner Type
Commanding Officer Marine Corps Base Camp Lejeune
Government - Federal
Owner Affiliation
Robert A. Lowder
12 Post Ln
Dates/Events
Camp Lejeune NC 2854725,
Scheduled
Orig Issue App Received Draft Initiated Issuance
Public Notice Issue Effective Expiration
12/13/2005 6/2/2020
7/10/2020 7/10/2020 12/13/2027
Regulated Activities
Requested /Received Events
State Stormwater - HD - Detention Pond
Outfall
Waterbody Name
Streamindex Number Current Class Subbasin

Burd, Tina J
From: Burd, Tina J
Sent: Thursday, June 18, 2020 3:15 PM
To: Barraco CIV Talia M
Subject: SW8 051018 - Tarawa Terrace li Housing
The Wilmington Regional Office of the Division of Energy, Mineral and Land Resources (Stormwater Section) accepted
the Stormwater Permit Renewal Application and $505.00 fee for the subject project on June 2, 2020. The project has
been assigned to Dan Sams and you will be notified if additional information is needed.
Best Regards,
Tina Burd
Administrative Associate II
Wilmington Regional Office
Division of Environmental Assistance & Customer Service
Phone [phone]
NCDEQ
Wilmington Regional Office
127 Cardinal Drive Ext.
Wilmington, NC 28405
Email correspondence to and from this address is subject to the
!North Carolina Public Records Law and may be disclosed to third parties.

Application Completeness Review Checklist (Non -Transfers) - Short Version
Project Name: ` V A —re P_aq� T E, HDJ SI J4 ezPL. Date Delivered to WIRO: % Zd2.0
Project County/Location: Qh1�5LDl.� RIMS Received/Accepted Date: (Q Z q
Rule(s): �2017 Coastal �2008 Coastal �1995 Coastal BIMS Acknowledged Date':
Phase 11 Universal 1:11988 Coastal
Permit Action: New
Major Mod / Minor Mod enewal
Permit Type; HD LD / LD Overall / HD &LD Combo
General Permit / Offsite / Exempt / Rescission
Development Type: Commercial / Residential Ajther �aST, i�ILI��Q
Subdivided?: Subdivision or Single Lot jJ J_A
Permittee Type & Documents Needed:
Property Owner(s) Purchaser Lessee
El Viable? ,rn(�B Viable? ElViabie?
Deed D Purchase Agmt Lease
Not Subdivided: Deed
Subdivision: Common Area Deed
Paperwork
Application
Fee: M$505 (within 6mo) Check#(s):
F]Su ppiementz (1 new form or for older forms
FlO&M2
Soils Report (lofil or PP)
Calculations (signed/seoled)
Deed Restrictions, if subdivided
Project Narrative
F-1USGS Map (or on file?) Subject to SA?:
Plans (2 Sets)
ElPE Certification
Electronic Copies
Easements, Recorded (2017 Rules)
NOTES:
'Enter BIMS Acknowledged Date on this Sheet
New Permit #2:
Existing Permit #: '. Oro, aJ J I7 (_8
Expriation Date3: 1 Z 113 zb11?
ElOffsite to SW8:
y tot is in Master Permit?
l 0PE Cert on File?
F-1HOA Developer
13 Viable? Viable?
Election Minutes
1 original perSCM)
❑ No Fee
Y / N Subject to ORW?: Y / N
For New Projects -Enter New Permit # on Supplements & Deed Restiction Templates,
aif w/in 6 months and they are requesting a mod, STOP. Needs a renewal first.
ENTAILED ENGINEER DATE:
REVIEWER NAME:
Comments:
G:WQ\\\Reference Libra ry\Procedures\Checklists\Completeness Review Checkli5t_202001 31

01
DWQ USE ONLY
Date Received
Fee Paid
Permit Number
-U
�% v3�ss
LJ a 5101
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This forrrr pray be photocopicd for use as an orighral
I. GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
Atlantic Marine Corps Communities LLC C e% ti5 m l~ —'(�) CRvr p Lg4'X\-z-
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
Dale Connor, Executive Manager �Q<- G5 Ty►Q! VIiQ ?re_`2''4Nk O� "e, � `ag�
i
3. Mailing Address for person listed in item 2 above: g C MUV\��1�CFi � C , 4v— mGngov'C�c�\ rRevn
X.
1801 West F-nd Ave., Suite 1700 ANIQL hv.'At
CiN Nashville State:'1'N Zip:37215 �Zcxr
Phone: (615 ) 324.7548 Fax:
Emailclale.connor«actuslendlease.com
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
5. Location of Project (street address):
City:Camp Lejeune County:Onslow Zip:28543
6. Directions to project (from nearest major intersection):
Travelling east on Lejeune Blvd /NC_ST RTE 24 turn right onto Tarawa Blvd and just past Bougainville Dr.
phase five is on the right and phase six is on the left.
7. Latitude:34° 43' 57" N Longitude:77° 22' 48" W of project
S. Contact person who can answer questions about the project:
Name:Thomas 1. Davis,-P.E._ Telephone Number: (615 ) 385.4144
Email:[e-mail]
IL PERMIT INFORMATION:
1. Specify whether project is (check one): ❑New ❑Renewal ZModification
2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit numberSW8 051018 and its issue date (if known)1211312005
3. Specify the type of project (check one):
❑Low Density EDFfigh Density ❑Redevelop ❑General Permit ❑Universal SMP ❑Other
4. Additional Project Requirements (check applicable blanks; information at r iM1 d's 2 4 to p�r�2008 m'�t an be
Form SWU-l01 Version 03.27.08 Page of4 SE>°
BY:

t. r
obtained by contacting the Customer Service Center at 1-877-623-6748):
❑CAMA Major ®Sedimentation/Erosion Control ❑404/40t Permit ®NPDES Stormwater
III. PROJECT INFORMATION
1. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will be conveyed throuqh storm drain inlets and pipes and also sheet flow to a detention pond
located in the central open area of phase 6. Also, stormwater will be conveyed in the same fashion to two
detention ponds located on the north and south sides a of an unnamed tributary to North east Creek.
2. Slormwater runoff from this project drains to the See Attached
River basin.
3. 'Total Property Area: See Attached acres 4, Total Wetlands Area: See Attached acres
5. '100' Wide Strip of Wetland Area: See Attached acres (nut applicable if rry Wetlands exist on site)
6. Total Project Area**:See Attached acres
7. Project Built Upon Area:See Attached %
8. How marry drainage areas does the project have?See Attached
9. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
For hieh density oroiects. comolete the table with one drainage area for each eneineered stormwater device.
Basin Information
Drainage Area 1
Drainage Area 2
l:eceiving Stream Name
See Attached
See Attached
Stream Class & Index No.
See Attached
See Attached
Total Drainage Area (sf)
See Attached
See Attached
On -site Drainage Area (so
See Attached
See Attached
Off -site Drainage Area (so
See Attached
See Attached
Existing Impervious Area (so
See Attached
See Attached
Proposed Impervious Area (so
See Attached
See Attached
%, Impervious Area (total)
See Attached
See Attached
impervious Surface Area
Drainage Area 1
Drainage Area 2
On -site Buildings (so
See Attached
See Attached
On -site Streets (so
See Attached
See Attached
On -site Parking (so
See Attached
See Attached
On -site Sidewalks (so
See Attached
See Attached
Other on -site (so
See Attached
See Attached
Off -site (so
See Attached
See Attached
Total (so:
See Attached
See Attached
Impervious area is defined as fire biulf upon area including, but not Innrted to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
**Total project area slurp be calculated based rrrr fire current policy regardirrq inclusi M of Wetlands irr the wilt ripen area
percentage calculation. This is [lie area used to calculate percent project built upon area (BLIA).
10. I -low was the off -site impervious area listed above derived?
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Form SWU-101 Version 03.27.08 Page of 4
SEP 2 4 7.008
BY:

f i
One of the following deed restrictions and protective covenants are required to be recorded for all subdivisions,
outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table listing each lot
number, sire and the allowable built -upon area for each lot must be provided as an attachment. Forms can be
downloaded from littpJlh2o.enr.state.IIC.us/su brnp for•ms.htm - deed restrictions.
Form DRPC-1
Hif;h Density Commercial Subdivisions
Form DRPC-2
High Density Developments with Outparcels
Form DRPC-3
High Dcnsity Residential Subdivisions
Form DRPC-4
Low Density Commercial Subdivisions
Form DRPC-5
Love Density Residential Subdivisions
Form DRPC-6
Low Density Residential SLIbdIVi5iorlS with CLlrb Outlets
By your signature below, YOU certify that the recorded deed restrictions and protective covenants for this
project shall include all the applicable items required in the above form, that the covenants will be binding on
all parties and persons claiming under them, that they will run with the land, that the required covenants
cannot be changed or deleted without concurrence from the State, and that they will be recorded prior to the
sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms. Forms can be downloaded from forrns.htm.
Form SW401-Low Density
Low Density Supplement
Form SW401-Curb Outlet System
Curb OLrtlet System Supplement
Form SW401-Off-Site System
Off -Site System Supplement
Form SW40"1-Wet Detention Basin
Wet Detention Basin Supplement
Form SW401-Infiltration Basin
Infiltration Basin Supplement
Form SW401-Infiltration Trench
Underground Infiltration Trench Supplement
Form SW401-Bioretention Cell
Bioretention Cell Supplement
Form SW401-1-evei Spreader
Level Spreader/Filter Strip/Restored Riparian Buffer Supplement
Form SW401-Wetland
Constructed Wetland Supplement
Form SW401-Grassed Swale
Grassed Swale Supplement
Form SW401-Sand Filter
Sand Filter Supplement
Form SW401-Permeable Pavement
Permeable Pavement Supplement
RjEr�r�TF
SEP 2 4 ZD08
Fonn SWU-101 Version 03.27.08 Page of

r
VI. SUBMITTAL REQUIREMENTS
Only complete application packages will be accepted and reviewed by the Division of Water Quality (DWQ).
A complete package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Office. (Appropriate office may be found by locating project on the
interactive online map at maps.lnm)
Please indicate that you have provided the following required information by initialing in the space provided
next to each item.
Initials
• Original and one copy of the Stormwater Management Permit Application Form
• Origival and ont! copy of the Deed Restrictions & Protective Covenants Form (if u/b
required as per Part IV above)
• Original of the applicable Supplement Form(s) and O&M agreement(s) for each BMP `T
• Permit application processing fee of $505 (Express: $4,000 for I -ID, $2,000 for LD)
payable to NCDENR S
• Calculations & detailed narrative description of stormwater treatment/managementY ����
• Copy of any applicable soils report
• Two copies of plans and specifications (sealed, signed & dated), including: ,
- Development/Project name
- Engineer and firm
-Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
-Dimensioned pro pperty/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, drainage features, collection systems, and stormwater control measures
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage areas delineated
- Vegetated buffers (where required)
VI1. AGENT AUTHORIZATION
If you wish to designate authority to another individual or firm so that they may provide information on your
behalf, please complete this section. (ex. designing engineer or firm)
Designated agent (individual or firm):Thomas J. Davis P.E. Littlejohn Engineering Associates
Mailing Address:1935 21" Ave. S
City:Nashville State:"1N Zip:37212
Phone: (615 ) 385.4144
Emai L•tdavis << leainc.com
Vill. APPLICANT'S CERTIFICATION
1, Dale Connor, Execrative Manygt r, cerli
best of my knowledge, correct and tha
that the required deed restrictions and
complies with the requirements of 15A
Signature:
Fax: (615 ) 3854020
that the information included on this permit application form is, to the
project tivill be constructed in conformance with the approved plans,
roe i c covenants will be recorded, and that the proposed project
IC 2H .1000.
Date:
•��- AVKD
S E P 2 4 2008
Donn S W U-101 Version 03.27.08 Page of 4 BY"

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-IIJ,
p .W '
• t'I �g� 3—�� _, � ��� 7—Permit No. ���5, /o /
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWO Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
1. PROJECT INFORMATION
Tarawa Terrace II
Project Name:
Contact Person: Tom Davis Phone Number: 615 385-4144
For projects with multiple basins, specify which basin this worksheet applies to: Tarawa Boulevard Pond
elevations
Basin Bottom Elevation 5•0 ft.
Permanent Pool Elevation 11.4 ft.
Temporary Pool Elevation 12_6
areas
Permanent Pool Surface Area 130,181 sq. ft
Drainage Area 80.85 ac.
Impervious Area 3�2.,K ac.
tirli�D
If
volumes
(door of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
Permanent Pool Volume 555,343 cu. ft. (combined volume of main basin and forebay)
Temporary Pool Volume 159,439 cu. ft. (volume detained above the permanent pool)
Forebay Volume 121,175 cu, ft. (approximately 20% of total volume)
Other parameters
SA/DA i 2' 8
(surface area to drainage area ratio from DWQ table)
Diameter of Orifice 6 in. (2 to S day temporary pool draw -down required)
Design Rainfall 1 in.
Design TSS Removal 2 20 % (minimum 85% required)
Form SWU-162 Rev 3.99 Page I of 4

tiloalbrm -& v 2-
5-08 D S1018
Footnotes:
When using the Division SAIDA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. if a requirement has not been met, attach ,justification.
Applicants Initials
X=? a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
:12 , b. The forebay volume is approximately equal to 20% of the basin volume.
`r`n c.. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
N/,ek e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
-t,�� h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
-=i. Vegetative cover above the permanent pool elevation is specified.
1�=�t j. A trash rack or similar device is provided for both the overflow and orifice.
NIA k. A recorded drainage easement is provided for each basin including access to nearest right -
NIA
of -way.
I. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
_ ��_ m.. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) V does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does N does not incorporate pretreatment other than a forebay.
Form SWU-IO2 Rev 3.99 Page 2 of 4

Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system far sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc,) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 4.05 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 4.05 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(Jill in the blanks)
v
Permanent Pool Elevation 11.4
Sediment Re oval El. 7.35 75 0
Sediment Removai Elevation 7.35
-------- ----- 75 /o
--
_ a
Bottom Ele ation 6.0 %-----------------------: --- - - - - - - - - - - - - - - - - - - - - - - - -
Bottom Elevation 6-0 25/a
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Page of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name:. __ L�,_i3t-�C� -�f '(RC—*V+'L
Title: X�VVS Ac_
Addr
Phon
Sign
Date:
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.
a Notary Public for the State of
County of 0A,416, , do hereby certify that fie/
personally appeared before me third day of ,!`" , and acknowledge the due
01
execution of the forgoing wet detention basin maintenance r uirements. Witness my hand and official seal,
Izz
SEAL
My commission expires "T'f
Form SWU-102 Rev 3.99 Page 4 of 4

Permit No.
a
l 1 (io be provided by DW&
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN .'SUPPLEMENT
This form may be photocopied for else as'an original - ' '
-��Management Flan Review:
DWO Stormwater,_
A complete stormwater management plan,
submittal includes an application form, a wet detention, basin
supplement for each .basin, design calculations, and plans and specifications showing all basin and' outlet
structure details.
I. PROJECT ]INFORMATION=
y
-`
' Tarawa Terrace 11
Project Name:
-'
Contact Person: T&h Davis ,
- Phone Nuinbe`r ° {- `61S }.=38S-4144
For projects with multiple basins; specify which
-i3ny scout Camp Road Pond',,',`
basin this worksheet appites to
elevations
". „•W ;1
Basin Bottom Elevation 4'5 v"
ft. (floor of the basin) r
Permanent Pool Elevation 9.5
ft;_ (elevation of the orifice).._
Temporarypool;Elevation 10.54
ft: (elevation•of the discharge structure overflow) .
Permanent Pool Surface Area $1,831
sq.41, (water surface area at the orifice elevation)
Drainage Area 37.60
ac,.- , . _ (on -site and off -site drainage to the basin)
Impervious Area 15.8
ac. ' (on -site and off -site drainage to the basin)
volumes ..
µ
._ N .
Permanent Pool Volurt'e 158 557
cu."ft: = 06bibined volume.of main basin and forebay}
58 690
Temporary -Pool Volume
cu. ft. (volume detained dbove the permanenl pool);. ... ;
Forebay. Volume 38,442
cu: ft. (approxtiriately 20% of total volume)
Other: parameters
SA/DA•1
Diameter of Orifice.; -
Design Rainfall
Design TSS-Removal,2
Form S W U- 102 Rev 3.99
2.94
in.
I.
in.
90
%
(surface area to drainage area ratio from DWQ- table)
T a
(1 to S day temporary pool 4lr zdown required)
... --
(minimum 85% required)
Page 1of4

lllb�'�D� - a!retl .2-
Footnotes:
Tws O3 / D918
When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NC AC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
b. The forebay volume is approximately equal to 20% of the basin volume.
c: The temporary pool controls runoff from the design storm event.
1�d. The temporary pool draws down in 2 to 5 days.
91A. c. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
-�� g. The basin side slopes above the permanent pool are no steeper than 3:1.
h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
-CDD i. Vegetative cover above the permanent pool elevation is specified.
j. - A trash rack or similar device is provided for both the overflow and orifice.
NIA k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
NIA 1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
A� _ m. A mechanism is specified which will drain the basin for maintenance or an.emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) x1 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does X does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 , Page 2 of 4

jle gorv�a _ /60 of rc tr, . 3�- Lj- w � 'qa i o r e
Maintenance activities shall be performed as follows:
1. After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs within
2 to 5 days as designed.
Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to maintain
proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed of
in an appropriate manner and shall be handled in a manner that will not adversely impact water quality (i.e.
stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 3.75 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads 3.75 feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
(fill in the blanks)
0 Permanent Pool Elevation 9.5
Sediment Re oval El. 5.75 75 a 5.75
------- ----- -- a Sediment Removal Elevation 75 /o
5 ---------------------------------------------125%
-----
Bottom Eie ation /a
Bottom Elevation 4.5
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment through
the emergency drain shall be minimized to the maximum extent practical.
Form SWU-l02 Rev 3.99 Page 3 of 4

7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. I agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print
Title
Addi
Phor
Sign
Date
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.
a Notary Public for the State of /f-U�I Cei���i�G ,
County of air/Z/� , do hereby certify that .c V
personally appeared before me this o7q'4 day of 4fA14 , and acknowledge the due
execution of the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
G
SEAL
My commission expires C;�Y a tz 01—
Form 5WU-102 Rev 3.99 Page 4 of 4

1 ,1
r

Permit No. �O � 10 1 4 ._TY IOIP
(to be provided by DWQ)
,• of w a r�R
`' L' r
NCDENR p
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part lll) must be printed, filled out and submitted afong with all of the required information.
I. PROJECT INFORMATION
Project name Tarawa Terrace II Phase 5
Contact person Thomas J. Davis, P.E.
Phone number 615.385.4144
Date 10i712008
Drainage area number North Pond
II. DESIGN INFORMATION
Site Characteristics
Drainage area
1,237,104.00 ft'
Impervious area
514,008.00 ft'
% impervious
41.55 %
Design rainfall depth
1.50 in
Storage Volume: Non -SR Waters
Minimum volume required
65,558,00
ft'
Volume provided
66,245.00
ft'
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
in
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
it
Volume provided
ft3
Peak Flow Calculations
1-yr, 24-hr rainfall depth
3.81
in
Rational C, pre -development
0.35
(unitless)
Rational C, post -development
0.60
(unitless)
Rainfall intensity: 1-yr, 24-hr storm
6.23
inthr
Pre -development 1-yr, 24-hr peak flow
20.56
0sec
Post -development 1-yr, 24-hr peak flow
54.44
h3lsec
PrelPost 1-yr, 24-hr peak flow control
33.88
f131sec
Basin Elevations
Basin bottom elevation
6.00
ft
Sediment cleanoul elevation
7.75
ft
Bottom of shelf elevation
12.50
ft
Permanent pool elevation
13.00
ft
SHWT elevation
12.83
ft
Top of shelf elevation
13.50
ft
Temporary pool elevation
14.24
ft
Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 1 of 2

Permit No. 5 A 151012 MOO
(to be provided by DWO)
Ill. DESIGN INFORMATION
Volume and Surface Area Calculations
SA1DA ratio
390
(unitless)
Surface area at the bottom of shelf
41,593.00
ft2
Volume at the bottom of shelf
156,584.00
ft'
Permanent pool, surface area required
48,247.00
ft'
Permanent pool, surface area provided
48,251 00
ft' OK
Permanent pool volume
179,024.00
K'
Average depth for SA/DA tables
3.71
ft OK
Surface area at the top of shelf
56,501,00
ftz
Volume at the top of shelf
250,185.00
ft3
Forebay volume
38,364.00
ft'
Forebay % of permanent pool volume
21.43
% OK
Temporary pool, surface area provided
61,917.00
ft'
Drawdown Calculations
Treatment volume drawdown time
2.93
days
OK
Treatment volume discharge rate
0.26
fil
Pre -development 1-yr. 24-hr discharge
20.56
ft'Is
OK
Post -development 1-yr, 24-hr discharge
6.43
ft3ls
OK
Additional Information
Diameter of orifice
3.5
in
Design TSS removal
90
%
Basin side slopes
3,00
:1
OK
Vegetated shelf slope
10.00
:1
OK
Vegetated shelf width
10.00
ft
OK
Length of flowpath to width ratio
3.00
:1
OK
Length to width ratlo
4.11
:1
OK
Trash rack for overflow & orifice?
Y
(Y or N)
OK
Freeboard provided
1.24
ft
OK
Vegetated filter provided?
NIA
(Y or N)
OK
Recorded drainage easement provided?
NIA
(Y or N)
OK
Capures all runoff at ultimate build -out?
'Y
(Y or N)
OK
Drain mechanism for maintenance or emergencies
Pump out
"Approximately 24,348 SF of BUA Bypasses North & South Ponds
Form SW401-Wet Detention Basin-Rev.4 Parts I. & If. Design Summary, Page 2 or 2

Permit
(fo be provided by DWQ)
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.
Pagel Plan
Initials
Sheet No.
_
C;GN
1. Plans (1" 50' or larger) of the entire site showing:
Dq tmlw
Design at ultimate build -out,
Off -site drainage (if applicable),
CS-0-7
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
�r
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dissensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
If A
Filter strip.
3, Section view of the dry detention basin (1" = 20' or larger) showing:
11
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
_ C.& T,1 .cs 1 4. if the basin is used for sediment and erosion control during construction, clean out of the basin is specified
l� on the plans prior to use as a wet detention basin.
i
�ytt p 5. A table of elevations, areas, incremenlal volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
$. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
.ATTcmtj 7. The supporting calculations.
&:X� A�TT6"trtj 8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
u/dj �A 9. A copy of the deed restrictions (if required).
�ep10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an acceptable source of soils information. R�' C�+ T�T�.- 1
SEP 2 4 7008
BY:
Form SW401-Wet Detention Basin-Rev.4 Part Ili. Required Items Checklist, Page 3 of 3

Permit No. 5\9,1 05 lO IF
(to be provided by D WO)
�7 OF W k T�9
T • " o� pG
� y
NCDENR Q
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required items Checklist (Part 18) must be printed, filled out and submitted along with all of the required information.
I. PROJECT.INFORMATION
Project name Tarawa Terrace it Phase 5
Contact person Thomas J. Davis, P.E.
Phone number 615.385.4144
Date 1017/2008
Drainage area number South Pond
II. DESIGN INFORMATION"
Site Characteristics
Drainage area
650,351,00 f?
Impervious area
246,560.00 ft2
% impervious
37.91 %
Design rainfall depth
1.50 in
Storage Volume: Nan -SR Waters
Minimum volume required
31,803 00
ft3
Volume provided
39,582.00
ft'
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
in
Pre -development 1-yr, 24-hr runoff
f13
Post -development 1-yr, 24-hr runoff
rya
Minimum volume required
It
Volume provided
fl3
Peak Flow Calculations
1-yr, 24-hr rainfall depth
3.81
in
Rational C, pre -development
0.35
(unitless)
Rational C, post -development
0.60
(unitless)
Rainfall intensity: 1-yr, 24-hr storm
6.23
inlhr
Pre -development 1-yr, 24-hr peak flow
10.71
ft3lsec
Post-developmenl 1-yr, 24-hr peak flow
27.22
ft3lsec
PrelPost 1-yr, 24-hr peak flow control
16.51
01sec
Basin Elevations
Basin bottom elevation
11.00
ft
Sediment deanout elevation
12.75
ft
Bottom of shelf elevation
17.50
ft
Permanent pool elevation
18.00
h
SHWT elevation
17.66
fi
Top of shelf elevation
1850
ft
Temporary pool elevation
19,00
ft
Form SW401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Pagel of 2

I
Permit No. 5W 9 95 j 01y MO
(to be provided by D WQ)
!I. DESIGN INFORMATION
Volume and Surface Area Calculations
SAIDA ratio
4.05
(unilless)
Surface area at the bottom of shelf
28,632,00
ft2
Volume at the bottom of shelf
102,508.00
f13
Permanent pool, surface area required
26,110 00
f12
Permanent pool, surface area provided
34,491.00
it OK
Permanent pool volume
118,266.00
f13
Average depth for SAIDA tables
3.43
it OK
Surface area at the top of shelf
40,559.00
ft'
Volume at the top of shelf
137,008.00
ft3
Forebay volume
22,573.00
ft3
Forebay % of permanent pool volume
19.09
% OK
Temporary pool, surface area provided
42,810.00
ft2
Drawdown Calculations
Treatment volume drawdown time
3.08
days
OK
Treatment volume discharge rate
0.12
ft3Is
Pre -development 1-yr, 24-hr discharge
1071
ft31s
OK
Post -development 1-yr, 24-hr discharge
3,43
ft31s
OK
Additional Information
Diameter of orifice
2.5
in
Design TSS removal
90
%
Basin side scopes
3,00
:1
CK
Vegetated shelf slope
10.00
:1
OK
Vegetated shelf width
10.00
ft
OK
Length of flowpath to width ratio
3.00
:1
OK
Length to width ratio
3.00
:1
OK
Trash rack for overflow & orifice?
Y
(Y or N)
OK
Freeboard provided
1.00
ft
OK
Vegetated filter provided?
Y
(Y or N)
OK
Recorded drainage easement provided?
N/A
(Y or N)
CK
Capures afl runoff at ultimate build -out?
'Y
(Y or N)
OK
Drain mechanism for maintenance or emergencies
pump out
`Approximately 24,348 SF of BL1A Bypasses North & South Ponds
Form SW401-Wet Detention Basin-Rev.4 Parts I. & 11. Design Summary, Page 2 of 2

i
Permit No.��,� a(�� Q�� rnQD
(to be provided by DWO)
Ill. 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.
Pagel Plan
Initials
SheetNo.
C_� 'f •Ub
1. Plans (1" - 50' or larger) of the entire site showing:
��cHlf5ll
Design at ultimate build -out,
Off -site drainage (if applicable),
G S•01
Delineated drainage basins (include Rational C coefficient per basin),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
T -�—
rS-cZ
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
C �� �•0(p
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
3. Section view of the dry detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or tower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
I . c2t 4. it the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
i-p ,QYx t tHr%j 5. A table of elevations, areas: incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
6 A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
-t- ej 7. The supporting calculations.
-�T�r� E•a� 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
9. A copy of the deed restrictions (if required).
10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. County
soil maps are not an accept&e source of soils information.
Form SW401-Wet Detention Basin-Rev.4
LBY:SEP
2 4 J
Part III. Required Items Checklist, Page 3 of 3

Permit No.
(to be provided by DWQ)
NCDENR a
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information.
I. PROJECT INFORMATION
Project name Tarawa Terrace li Phase 6
Contact person Thomas J. Davis, P,E.
Phone number 615.385.4144
Date 10f712008
Drainage area number TT6 Pond
II. DESIGN INFORMATION
Site Characteristics
Drainage area
1,716,264,00 ft'
Impervious area
645,088.00 ft2
% impervious
37.59 %
Design rainfall depth
1.50 in
Storage Volume: Non -SR Waters
Minimum volume required
83,299.00
ft3
Volume provided
86,206.00
h3
Storage Volume: SR Waters
1-yr, 24-hr runoff depth
in
Pre -development 1-yr, 24-hr runoff
ft3
Post -development 1-yr, 24-hr runoff
ft3
Minimum volume required
ft,
Volume provided
ff3
Peak Flow Calculations
1-yr, 24-hr rainfall depth
3.81
In
Rational C, pre -development
0.35
(unitless)
Rational C, post -development
0.60
(unitless)
Rainfall intensity: 1-yr, 24-hr storm
6.23
inlhr
Pre -development 1-yr. 24-hr peak flow
28.37
0sec
Post -development 1-yr, 24-hr peak flow
64.74
ft3lsec
PreiPost 1-yr, 24-hr peak flow control
36.37
fi3lsec
Basin Elevations
Basin bottom elevation
7.50
ft
Sediment cleanout elevation
9.38
It
Bottom of shelf elevation
14.50
ft
Permanent pool elevation
15.00
It
SHWT elevation
14.83
It
Top of shelf elevation
15.50
ft
Temporary pool elevation
16.14
ft
Form SW 401-Wet Detention Basin-Rev.4 Parts I. & II. Design Summary, Page 1 of 2

Permit N
} {to be provided by QWQ)
111, DESIGN INFORMATION
4
Volume and Surface Area Calculations
SNDA ratio
3.30
(unitless)
Surface area at the bottom of shelf
58,495.00
ft2
Volume at the bottom of shelf
233,953.00
ft3
Permanent pool, surface area required
57,323.00
it
Permanent pool, surface area provided
66,137.00
h2 OK
Permanent pool volume
265,091,00
f13
Average depth for SA/DA tables
4.01 —ft
OK
Surface area at the top of shelf
72,284.00
ft2
Volume at the top of shelf
299.685,00
ft3
Forebay volume
53,821.00
ft'
Forebay % of permanent pool volume
20.30
% OK
Temporary pool, surface area provided
79,445.00
fe
Drawdown Calculations
Treatment volumed rawdown time
301
days
OK
Treatment volume discharge rate
0.32
ft31s
Pre -development 1-yr, 24-hr discharge
28.37
ft'!s
OK
Post -development 1-yr, 24-hr discharge
6,52
ft'/s
OK
Additional Information
Diameter of orifice
4
in
Design TSS removal
90
%
Basin side slopes
3.00
:1
OK
Vegetated shelf slope
10.00
;1
OK
Vegetated shelf width
10.00
ft
OK
Length of flowpath to width ratio
3.00
:1
OK
Length to width ratio
2.09
:1
OK
Trash rack for overflow & orifice?
Y
(Y or N)
OK
Freeboard provided
1.13
ft
OK
Vegetated filter provided?
N/A
(Y or N)
OK
Recorded drainage easement provided?
NIA
(Y or N)
OK
Capures all runoff at ultimate buiid-out?
"Y
(Y or N)
OK
Drain mechanism for maintenance or emergencies
Pump out
'Approximately 12.582 SF of BUA Bypasses Pond
Form SW401-Wet Detention Basin-RevA Parts I, & il. Design Summary, Page 2 of 2

Permit No. �)R s
(to be provided by DWQ)
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 protect. 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.
Pagel Plan
Initials Sheet No.
DA 6ULTI
Cg.o�
Cl� 4. A
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),
Basin dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
2. Partial plan (1" = 30' or larger) and details for the wet detention basin showing:
Outlet structure with trash rack or similar,
Maintenance access,
Permanent pool dimensions,
Forebay and main pond with hardened emergency spillway,
Basin cross-section,
Vegetation specification for planting shelf, and
Filter strip.
_uZ 3. Section view of the dry detention basin (1" = 20' or larger) showing:
Side slopes, 3:1 or lower,
Pretreatment and treatment areas, and
Inlet and outlet structures.
4. If the basin is used for sediment and erosion control during construction, clean cut of the basin is specified
on the plans prior to use as a wet detention basin.
-xa-A > 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
=fit!— ce" - t' . of 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
�e-tj 7, The supporting calculations.
&=.grRcj 8. A copy of the signed and notarized operation and maintenance (O&M) agreement.
9. A copy of the deed restrictions (if required).
� rTr�c+t j 10. A soils report that is based upon an actual field investigation, soil borings, and infiitration tests. County
soil maps are not an acceptable source of soils information.
7Y,-
P 2 4 2008
__._
Form 5W401-Wei Detention Basin-Rev.4 Part Ill. Required Items Checklist, Page 3 of 3

Permit Number: ���C55 10 LKw_to
(to be provided by DWQ)
Drainage Area Number: 'Ph 5—i��A�N Ply\,\
Wet Detention Basin Operation and Maintenance Agreement
1 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 BNIP.
The wet detention basin system is defined as the wet detention basin,
Pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
- Innmediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilizes{ after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the Bret detention basin.
— If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potential roblem:
Flow 1 wilI remediate the roblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then planta
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
Ion
—approximately-approxiniately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3
Page 1 of 4

Permit Number:_ i &- )_ lvhk.,ksn
(to be proryirled b_y D!1'Q)
Drainage Area Number:
BMP element:
Potentialproblem:
I•low 1 will renlediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
Swale
sediment off -site.
Tlie pipe is cracked or
Replace the pipe.
otlicrivlse danla ged.
Erosion is occurring in the
Regrade the swale if necessary to
Swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problenis with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
seiiinlent storage.
dispose of it in a location where it
will not cause impacts to streams or
the 15N1 P.
Erosion has occurred.
Provide additional erosion
Protection such as reinforced turf
matting or riprap if needed to
revent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, ,wipe it on
the plants rather than spraying.
The vegetated shelf
]lest professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
flying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the seiiinlent and
storage depth.
dispose of it in a location where it
will notcause impacts to streams or,
the BN1P.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragnlites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (c10 not spray).
the basin surface.
I=orm SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4

Pcrmit Number:'S (.'�"k QS lc� (.
(to be proi4ded by DH`Q)
Drainage Area Number:
BM element:
Potentialproblem:
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.25 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 5.25 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Dottom Elevatio
7.75 l 1
-----------------
IZO IZ E 13AY
BASIN DIAGRAM
aill in the blanks)
Volume
-ft Min.
Sediment
Storage
Permanent Pool Elevation 13.0
Pool
Sediment Removal Elevation 7.75 Volume
1-- ------
Bottom Elevation
MAIN POND
Form SW401-Wet Detention Basin O&M-Rev.3 Page 3 of 4
Sediment
Storage

Hermit Number:S(s—) to AKPI_4�10
(to be provided byDfVQ)
l acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures lister! above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project rune Tarawa Terrace Phase 5
BMP (Iraivawe area number. North Pond
Print namc:Dale Cot
Tltle:ExCCLltiVC Man
Address:1801 West
Phorie:G 15.324.7548
Signature:
Date:
Note: The legally responsibic party should not be a liomeotivners association unless more than 50'% of'
the lots have been sold and a resident of the subdivision has been named the president.
1, ��T�tctPC i� IN*� V_C;1 , a Notary Public for the State of
1t�^�JIS63�r� , County of �1J �ya,,� , do hereby certify that
?rrr•t� �ur� personally appeared before me this
day of _OT_ , Ghpb2, and acknowledge the clue execution of the
forgoi c detention basin maintenance requirements. Witness my hand and official
seal,
Ilk A N41
STATE ,2p=�
OF . r
rENNEEI:
v ; NOzAny
PU6LIC
N EQUNZy'�`
SEAL
My commission expires a-5 �a ..
jj
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

k T
f
i
1

Permit Number: >4 s 015 i'D t$
(to be provided by DJJ"Q)
Drainage Area Number: �ti6 - ")n,)�� '90 1�16
Wet Detention Basin Operation and Maintenance Agreement
will keep a maintenance record on this Mill'. 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 BiVIP.
The wet detention basin system is defined as the Bret detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment. �y
K
After the wet detention pond is established, it should be inspected once a month and rn
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a n
Coastal County). records of operation and maintenance should be kept in a known set �'
location and must be available upon request. ,"
_o }�y
co
Inspection activities shall be performed as follows. Any problems that are found shall �iy�
be repaired inunediately. v
BMP element:
Potentialproblem:
How I will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soli if necessary to
detention basin
erosive gullies have formed.
remove tl}e 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
1011g.
approximately six inches.
Form SW401-Wet Detention Basin 0&M-Rev.3
Page 1 of 4

Permit Number: 1715 mQb
(to be provideel btu D H'Q)
Drainage Area Number;
BMP element:
Potentialproblem:
How I will remediate the roblem:
The inlet device: pipc or
The pipe is clogged.
Unclog the Pipe. Dispose of the
swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
]SI'OSIOn is occurring in the
Regrade the Swale if necessary to
Swale.
smooth it over and provide erosion
control devices such as reinforced
turf malting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible.. Remove the sedimentand
sediment storage.
dispose of it in a location where it
will not cause impacts to streams or
the BN1P.
1-1.OSiOn 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 pesticide is used, wipe it on
the Elants rather than Spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain Optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and rernedy the problem if
original design sediment
possible_ Remove the sediment and
storage depth.
dispose Of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over
Consult a professional to remove
50% Of the area,
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping them
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
TDO -1
E
SEP 2 4?008
Form SW401-Wet Detention Basin O&M-Rev.3 I Page 2 of 4

i ; I
Permit Numbe-:�s �R 0<5
(to be provided bY D6VQ)
Drainage Area Nmnbcr:
BM element:
Potentialproblem:
Flow I will remediate theproblem:
The embankment
Shrubs have started to grow
remove shrubs immediately.
on the embankment,
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is lama ed
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate ilito
accumulated sediments.
When the permanent pool depth reads 5.25 feet in the main pond, the -
sediment shall be removed,
When the permanent pool depth reads 5.25 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
(fill in the blanks)
p Permanent Pool Elevation 18.00
Sediment Removal . 12,75 Pe manes Pool
---------------- Volume Sediment Removal Elevation 12.75 Volume
Bottom Elevatioi l 1.00 -ft Min. ------------------------------------------- ------
Sediment Bottom Elevation 11.00 1-ft N m.
Storage Sediment
Storage
FORFBAY MAIN POND
ET
Dorm SW401-Wet Detention 13asin O&M-Rev.3 Page 3 of 4

Permit Number: (] S
(to be provided fw Dlt'Q)
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.
Proica itame:Tarawa Terrace Phase 5
13NIP drahiage area numbe1-:South Pond
Print name:Dale Connor
Title:Executive_Manager.
Addr
Phon
Sign"
Date
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.
I, PATt."L'(0, *W.J
a Notary Public for the State of
kr. c_-:516r County of ` �•�,J , do hereby certify that
.QtS Cpnsvoct— personally appeared before me this
clay of _.Q--wG„� tT , and acknowledge the due execution of the
forgoi 3g w4 detention basin maintenance requirements. Witness my hand and official
seal,u
y; N,1A a NNq�
a�-•• S7A7r_ .2
•D
Tr<N OF � o
SSSEFE =
a ; N07ARY
N C 0 U
SEAL
My commission expires
I:
SEA ,,Ong
Form SW40I-Wet Detention Basin O&M-Rev.3 Page 4 of 4

I
f

( I r
J Permit Number: V �• 9f f ` �LJ
(to Ue��ided by DJJ,Q)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
i will keep a maintenance record on this 13MP. 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 StrL[CtUreS, safety of the public, and the removal efficiency of the SNIP.
The Wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check ogre):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
— Stable groundcover should be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
— if the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month 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 should be kept in a known set
location and must be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
I -low I will remediate the roblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the wet
Areas of bare soil and/or
Regrade the soil if necessary to
detention basin
erosive gullies have formed.
remove the gully, and then plant a
grounil cover and water until it is
established. Provide lime and a
lication.
one-time fertilizerapplication.
Vegetation is too short or too
Maintain vegetation at a height of
Ion
-approxiniately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3
Page I of 4

Permil Number: () s t (Drg m-e'D
(to he proi!ided hy Dlt'Q)
Drainage Area Number:
6MP element:
Potentialproblem:
How I will remediate theproblem:
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
Swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged.
Erosion is occurring in the
Regrade the swale if necessary to
Swale,
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
dispose of it in a location ",here it
will not cause impacts to streams or
the 13M P.
Frosion 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 pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
lien Ith.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary,
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying,
The main treatment area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Removethe sediment and
storage depth.
dispose of it in a location where it
will not cause rmpaCtS to streams or
the 13MP.
Algal growth covers over
Consult a professional to remove
50% of the area.
and control the algal growth.
Cattails, phragrnites or other
Remove the plants by wiping there
invasive plants cover 50% of
with pesticide (do not spray).
the basin surface.
1- CFT�TFD
S E P 2 4 2008
Form SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4

Permit Nuniber: 5
(to be provided b_v DlVQ)
Drainage Area Number:
BMI' element:
I'otentialproblem-.
How I will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs,
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or re lace the outlet device.
The receiving water
hrosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.62 feet in the main pond, the
sediment shall be removed.
When the permanent pool depth reads 5.62 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom Elevati
BASIN DIAGRAM
(fill in the blanks)
9.38 1 Pe maven\
-------------- - - Volume
i 7.50 -ft Min.
Sediment
Storage
FORE13AY
Pool
Permanent Pool Elevation 15.00
Sediment Rernoval Elevation 9.38 Volume
----------- ------
Bottom Elevation 7.50 2 1-ft 4r
MAIN POND
_-
11 "I. v E
5 E P 2 4 2008
15edlinent
Storage
Form SW401-Wet Detention Basin O&M-Rev.3 / Page 3 of 4

Permit Number: G_V_=-SOs 01mx
(to be provi(le(( by DII'Q)
acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to noti Fy DWQ of any
problems with the system or prior to any chanties to the system or responsible party.
Project name:Tarawa Terrace Phase 6
13rvIP rlr•arnage area nwnber:Wet Detention Pond
Print namc:Dale Connor
Title: Executive Manager
Address:1801 West End Ave. Suite 1700 Nashville, TN 37203
Phone:[phone] C-,\ I pI i
Signature:
Date:
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.
a Notary Public for the State of
Ie'3-0G50%wzr , County of �L�Sa.J , do hereby certify that
J 3 personally appeared before me this 154-
day of �t- , ?p=, and acknowledge the due execution ofthe
Forgoing et detention basitl maintenance rccluircments. Witness my hand and official
seal,
,,,IIII1I##"d,
SNre
OF
a T NESSEEAIO-rAv
R
•"V$t /C .•
It SOU NZ1
011l11i IIIAti4'
SEAL
My commission expires a.3 20a
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4

WET DETENTION BASIN CALCULATIONS
for.
TARAWA BOULEVARD POND
M.
Me
BOY SCOUT CAMP ROAD POND
PROJECT NAME: TARAWA TERRACE II
STORMWATER PROJECT NUMBER: SW8 051018
-7
a
,• 31144 e>.5
''l;GINe"
0A
Swlb WM b
Prepared By:
Littlejohn Engineering Associates
1935 Twenty -First Avenue South
Nashville, TN 37212
615-385-4144

Tarawa Boulevard Pond Calculations
Ilk,
Drainage Area:
Off -Site Drainage Area = 28.8 AC (40% Impervious)
Tarawa Terrace 11 Drainage Area = 52.05 AC
Total Drainage Area = 80.85 AC
Impervious Area = 33.82 AC
Percent Impervious - 42%
Permanent Pool Depth = 5-FT
Pond Surface Area:
f
SA/DA Ratio ='. 2.94 (From NC DENR BMP Manual SA/DA Ratios for Coastal. Counties)
Surface Area Required = (2,94/100)"80.85 AC = 2.36 AC = 103,542 SQ-FT
Surface Area Provided = 130,181 SO -FTC
Volume to be Controlled:
Volume (V) = Design Rainfall " R_v " Drainage Area
R_v = 0.05+0.009"1 1= Percent Impervious = 42
R_v = .43 WIN
Design Rainfall = 1-IN
V = (1-IN)" 0.43 INIIN " 1 FT/121N ' 80.85 AC
V = 2.90 AC -FT
126,199 CU-FT
Drawdown Time Calculations:
Temporary Pool Depth: 12.39 - 11.42 = 0.97 FT
Average Head on Orifice: h = 0.48 FT
Orifice Equation - O = C_d ' A " (2'g'h)AJ/2
C d = 0.6
4-IN ORIFICE A = 0.087 SO -FT
Q = 0.29 CFS
V10 = 433,504 SECONDS
6.02 DAYS
6-IN ORIFICE A = 0.196 SO -FT
Q = 0.66 CFS
V/Q = 192,668 SECONDS
W 2.23 DAYS
Therefore a 6-IN Orifice will provide acceptable drawdown time.

TARAWA BOULEVARD POND STAGE -STORAGE TABLE
ELEVATION
F)
SURFACE AREA
__ _(SQ F
ELFV. VOLUME
(CU FT)
SUB -VOLUME
CU FT)
SURFACE AREA
AC
5.80
0
0
0.00
6.00
79,496
5.300
5.300
1.82
7,00
67,074
83,249
88,549
2,00
8.00
94,956
90,980
119,529
2.18
9.00
103,364
99,125
278.653
2.37
10.00
112,542
107,911
186,564
2.58
11.00
123_'628
118,023
504,587
2.84
11,40
130,131 ✓
50,755
555,343
2.99
12.00
132,245
78,727 /
634,070
3:04
12.6U
136,807
80,712
714,782
3.14
Following page Illustrates the stage -storage tahle hroken down into (brebay stage -storage and main pond
stasC-storage'

I f':1r►�4AYY /"� IJ �-' V LG Y/`�;G Y 1 U N 1:-�' -
MAIN.POND STAGE STORAGE TABLE
0
N
ELEVATION
(Pr)
SURFACE AREA
S Fr]
ELEV. VOLUME
(CU FT)
SUB -VOLUME
CU 1'1'
5.80
'
0
0
6.00
66,142
4,409
4,409
7.00
70,921
68,518
72,927
8.00
75,802
73,348
146,275
9.00
80,952
78.363
224,638
10.00
86.100
83,513
308,151
11.00
91,349
98,712
396.862
I.40
95,191
37,305
434,168
12.00
96,670
57,558
491,725
12.60
100.143
59,041
550;766
r
-
r
EAST FOREBAY STAG E-ST MGE TABLE
ELEVA"1']ON
(1-. r)
SURFACE AREA
(S l i)
ELEV. VOLUME
(CU 1�T)
SUS -VOLUME
(CU FT)
5.80
0
0
6.00
5,601
373
373
7.00
6,885
6,232
6,605
8.00
8,265
7;565
14,170
9.00
9,769
9,007
23,176
10.00
11,960
10,850
34,027
11.00
14,841
13,379
47,406
1 L40
16,230
6,212
53,618
12.00
16,531
9,828
63,446
12.60
16,964.
10,048
73,495
WEST FOREBAY STAGE -STORAGE TABLE
ELEVATION
(12"I")
SURFACE AREA
(SQ F'o
ELEV. VOLUME
(CU rI
.SU13-VOLUNIF
(CU FT)
5.80
0
0
6.00
7.753
517
517
7.60
9.268
8.499
9,016
8.00
'10;889
10,068
19,084
9.00
12,643
11,755
30,839
10.00
14,473
13,548
44,387
11,00
1:7,439
15,932
60,319.
1.1.40
18,760
7,238
67.557
12.00
19.044
11,341
78,898
12.66
19.700
11,623
90,521

Boy Scout Camp Road Pond Calculations
Drainage Area:
Total Drainage Area = 37.8 AC
Impervious Area = 15.8 AC
Percent Impervious = 42%
Permanent Pool Depth = 5-FT
Pond Surface Area:
SA/DA Ratio = 2.94 (From NA�G DENR BMP Manual SAIDA Ratios for Coastal Counties)
Surface Area Required = (2, 4/100)*37.6 AC = 1.11 AC = 48,153 SO -FT
Surface Area Provided = 51,831 SQ-FT r
Volume to be Controlled:
Volume (V) = Design Rainfall " R_v ' Drainage Area
R_v = 0.05+0.009"1 I = Percent impervious = 42
R v = .43 IN/IN
Design Rainfall = 1-IN
V = (1-tN) ' 0:43 IN/IN ` 1 FT/121N ` 37.6 AC
V= 1.35 AC -FT
58,690 CU-FT v
Drawdown Time Calculations:
Temporary Pool Depth:
10.54 - 9.5 =
1.04 FT
Average Head on Orifice:
h = 0.52 FT
Orifice Equation =
0 = C_d ` A "
(2'g'h)^1/2
C d =
0.6
4-IN ORIFICE
A =
0.087 SO -FT
Q =
0.30 CFS
VIQ =
193,696 SECONDS
=
2.24 DAYS
Therefore a 4-IN Orifice will provide acceptable drawdown time.

BOY SCOUT CAMP ROAD POND STAGE -STORAGE TABLE
ELEVATION
(FT)
SURFACE AREA
(SQ
FLEV, VOLUME
(CU CI")
SUES -VOLUME
(CU fT)
SURFACE AREA
(AC)
4.40
0
0
0
0.00
4.50
30,216
1,007
1,007
0'.69
5.50
34,074
32.124
33,131
0.78
6.50
38,162
36,097
69,228
0.88
7.50
42,478
40,299
109,529
0.98
I 8.50
47,019
44,728
154,256
1.08
9.50
51,831
42,743
158,557
1.19
10.50
57,376
54,580 • ,
I 213,137=
L32
11.50
61,683
59.517
272,653
1.42
12.50
64,626
63,149
335,802
1 1.48
Followinn page illustrates the stage -storage table broken downs into forebay stage -storage and main pond
stage-storagc

50Y S couv "vZar.n T>C wn .
lar4
FOREBAY STAGE -STORAGE TABLE
ELEVATION
SUKFACE AREA
(SQ FT)
ELEV. VOLUME
(Cu r)
SUB -VOLUME
(Cu I: -I-)
4.40
0
0
0
4.50
6,659
222
222
5.50
8,011
7,325
7,547
6.50
9,479
8,735
16,281
7.5.0
11,062
10,260
26,542
8.50
12,760
11,901
38,442 ✓
MAIN POND STAGE -STORAGE TABLE
ELEVATION
(I'I
SURFACE AREA
SQ 1 I'
ELEV. VOLUME
(CU
SU13-VOLUME
CU FI
4.40
0
0 j
4.50
23.557
785
785
5.50
26.063
24,799
25.585
6.50
28,683
27.363
52,947
7.50
31,416
30,039
82,986.
8.50
34.259
32,827
1.15,814
9.50
51.831 -/
42,743
SR,557
10,50
57,376
54,580 r
213,137
11.50
61,683
59,517
272,653
12.50
64,626
63,149
335,802

Tarawa Terrace II
Overall Site
Impervious Area Calculations
Phase 1/School Site:
Total Impervious Area = 371,984 SO -FT
y Impervious Area Draining to
Tarawa Boulevard Pond = 371,984 SO -FT
Total Impervious Area =
417,098
SO -FT
Impervious Area Draining to
Boy Scout Camp Road Pond =
331,708
SO -FT
Impervious Area Draining
Off -Site as under
Existing Conditions =
46,000
SO -FT
Impervious Area Draining
North to Future Phase Ponds =
39,390
SO -FT
Phase 2a/Commun Ity Center:
Total Impervious Area
43,577
SO -FT
Impervious Area Draining to
Boy Scout Camp Road Pond =
30,485
SO -FT
Impervious Area Draining
North to Future Phase Ponds=
13,092
SO -FT
Phase
Total Impervious Area =
538,430
SO -FT
Impervious Area Draining to
Tarawa Boulevard Pond =
282,410
SO -FT
Impervious Area Draining to
✓ Boy Scout Camp Road fond =
231,520
SO -FT
Impervious Area Draining
Off -Site as under
Existing Conditions =
24,500
SQ-FT
1 of 2

Phase 4•
Total Impervious Area
Impervious Area Draining to
Tarawa Boulevard Pond =
Impervious Area Draining to
Boy Scout Camp Road Pond =
Impervious Area Draining
Norih ta."Future Phase Ponds =
Phase 5:
Total Impervious Area =
Tarawa Terrace 11
Overall Site
Impervious Area Calculations
491,530
SO -FT
315,680
SO -FT
106,850
SO -FT
69,000
SO -FT
585,174- SQ-FT
Phase 6:
Total Impervious Area W 696,144 SO -FT
Total Project Impervious Area 3,143,937 SQ-FT
"Detailed Breakdown of Impervious Area Calculations to follow
2 of 2

Buildings/Driveways:
RoMds:
Tarawa Terrace II
Phase 1/School Site
Impervious Area Draining to Tarawa Boulevard Pond
Buildin • 1
Uniis
Ogilding Area/Uni
Tolal-Quildingv
rea
1
29
3,200
92,800
1,200
34,800
11
0
3,300
0
1,600
0
111
8
3,200
25,600
1,300
10,400
V
10
4,300
1 43,000
1,420
14,200
VI
4
3,700
1 14,800
800
3,200
Building Area Phase 1 = 176,200 SO -FT
Driveway Area Phase 1 = 62,600 SO -FT
Name
Width
Length (FT)
Area (SO. -FT)
On-Streat Parkin
Road "A"
28
2,150
60,200
0
Road "B"
28
660
24,080
0
Alle
16
280
4,480
0
Mews
20
430
8,600
0
Phase 1 Road Areas = 97,360 SO -FT
Sidewalks:
Length: 6,892 FT
Width: 4 FT
Phase 1 Sidewalk Area - 27,568 SOFT
Trails:
Length: 2,064 FT
Width: 4 FT
Phase 1 Trail Area = 8,256 SO -FT
Impervious Area Draining to
Tarawa Boulevard Pond = 371,984 SOFT

Bu_il_din- sct /Driveways:
Roads:
Tarawa Terrace II
Phase 2
Impervious Area Draining to Boy Scout Camp Road Pond
it in
u ldi A n€
T aLB ii in Ar
riveyvaXre
1
19
3,200
60,800
1,200
22,800
II
2
3,300
6,600
1,600
3,200
111
5
3,200
16,000
1,300
6,500
V
15
4,300
64,500
1,420
21,300
VI
0
3,400
0
800
0
Building Area Phase 2 = 147,900 SOFT
Driveway Area Phase 2 = 53,800 SOFT
I
Name
Width
Length (FT)
Area (SO. -FT)
On -Street Parkin
Ha aru
26
930
24,180
0
Chosin
26
1,300
33,800
0
Hungnam
26
42
1,092
0
Road "D"
28
530
14,840
0
Tarawa
34
430
14,620.
0
Sidewalks:
Phase 2 Road Areas =
Phase 2 On -Street Parking =
Length: 7,005 FT
Width: 4 FT
Phase 2 Sidewalk Area =
Length: 3,364 FT
Width: 4 FT
Phase 2 Trail Area =
Impervious Area Draining to Boy
Scout Camp Road Pond (Phase
2) =
88,532 50-FT
0 SO -FT
28,020 SO -FT
13,456 SO -FT
331,708
SO -FT

Buildings/Driveways:
Roads:
Tarawa Terrace II
Phase 2
Impervious Area Draining Off -Site as under Existing Conditions
Hungnam Place
uitdi T
#Units
i1 i r
Total ui! in re
D 'v i
riv
1
2
3,200
6,400
1,200
2,400
11
0
3,300
0
1,600
0
III
5
3,200
16,000
1,300
6,500
V
0
4,300
0
1,420
0
VI
0
3,700
0
800
0
Building Area Phase 2 = 22,400 SO -FT
Driveway Area Phase 2 = 8,900 SO -FT
Name I
Width
I Length (Fr)
I Area (SO. -Fr) I
an -Street Parkin
Hun nam
1 26
450
1 11,700
1 0
Sidewalks,•
Phase 2 Road Areas = 11,700 SO -FT
Phase 2 an -Street Parking = 0 SOFT
Length: 750 FT
Width: 4 FT
Phase 2 Sidewalk Area = 3,000 SOFT
Total Impervious Area Draining
Into Woods as in Existing
Conditions (Phase 2) = 46,000 SO -FT

Tarawa Terrace II
Phase 2
Impervious Area Draining North to Future Phase Ponds
Bvildings/Driveways:
Bui in
it in
ilding Am
Drive w4412jVni
Total Coveway Am
1
3
3,200
9,600
1,200
3,600
II
1
3,300
3,300
1,600
1,600
ill
2
3,200
6,400
1,300
2,600
V
4
4,300
17,200
1,420
5,680
VI1
0
3,400
0
800
0
Roads:
11;3uiiding Area Phase 2 = 36,500 50-FT
Driveway Area Phase 2 = 13,480 SO -FT
Name
Width
Length {FT)
Area (SQ.-Fr)
On Street Parkin
Ha aru
26
240
6,240
0
Guam
34
620
21,080
0
Tarawa
34
355
12,070
0
Phase 2 Road Areas =
39,390
5Q-FT
Phase 2 On -Street Parking,=
0
SQ-FT
.Sidewalks:
Length; 1,858 FT
Width: 4 FT
Phase 2 Sidewalk Area =
7,432
SQ-FT
Trails:
Length: 1,000 FT
Width; 4 FT
Phase 2 Trail Area =
4,000
SQ-FT
Total Impervious Area Phase 2
Total Impervious Area
Contributing to Phase 516 Ponds
(Phase 2) =
1001802 SO -FT
39,390 SO -FT

Tarawa Terrace I I
Phase 2a/Communiiy Center
Impervious Area Draining to Boy Scout Camp Road Pond
Buildings/Driveways:
uTdin T : I gnl it in T t Tin
Comm. Center 1 1 5,250 1 5,250
Building Area Phase 2a = 5,250 SO -FT
Mlsc Concrete Phase 2a = 15,455 SO -FT
Roads-.
Name I Width I Length (FT) Area (So. -FT) On -Street Pa
Phase 2a Road Areas = 0 - SO -FT
Phase 2a Parking = 0 SO -FT
idew Iles:
Length: 2,445 FT
Width: 4 FT
Phase 2a,Sidewalk Area = 9,780 SOFT
Total Impervious Area, Phase 2a
Contributing to Boy Scout Camp
Road Pond = 30,485 SO -FT
f

Tarawa Terrace 11
Phase 2a/Community Center
Impervious Area Draining North to Future Phase Ponds
Buildings/Driveways:
i i e: Lgrigs I31'1 ina Area/UnTpla[13 uIlding 6M Driveway Argigunij Totgi riv A
Roads:
Sidewalks:
Building Area Phase 2a =
Parking Lot Area Phase 2a =
Misc Concrete Phase 2a
Phase 2a Road Areas =
Phase 2a On -Street Parking =
Length: 523 FT
Width: 4 FT
Phase 2a Sidewalk Area =
Total Impervious Area
Contributing. to Phase 516 Ponds
(Phase 2a) _
0
10,000
1,000
0
0
SQ-FT
SQ-FT
SQ-FT
SO -FT
SO -FT
2,092 SO -FT
13,092 SQ-FT
f

Tarawa Terrace II
Phase 3
Impervious Area Draining to Tarawa Boulevard Pond
Buildings/Driveways:
Buildinge
H Uni
r U t
T i t
Nveway ArljTotal
DrivewayAM
1
14
3,200
44,800
1,200
16,800
II
4
3,300
13,200
1,600
6,400
III
0
3,200
0
1,300
0
V
9
4,300
38,700
1,420
1 1 12,780
V1
13
3,700
48,100
800
1 10,400
Roads:
Building Area Phase 3 = 144,800 SO -FT
Driveway Area Phase 3 = 46,380 SO -FT
!Name
Width
Len h (FT)
Area (SO. -FT)
Qn=Street Parkin
Tula i
26
255
6,630
0
Ha aru
26
1,200
31,200
0
Alley ""
16
450
7,200
0
Road "E"
28
850
23,800
0
Sidewalks:
Tr_ ails:
Phase 3 Road Areas = 68,830 SOFT
Phase 3 On -Street Parking = 0 SCE -FT
Length: 5,600 FT
Width: 4 FT
Phase 3 Sidewalk Area = 22,400
SO -FT
Length: 0 FT
Width: 4 FT
Phase 3 Trail Area = 0 SO -FT
Total Impervious Area
Contributing to Tarawa
Boulevard Pond (Phase 3)= 282,410 SO -FT

Tarawa Terrace 11
Phase 3
Impervious Area Draining to Say Scout Camp Road Pond
Build cis/Driveways:
Tyne:Buildiag
i
it I
TMat.1501dingi
Total Driveway -AM
1
16
3,200
51,200
1,200
19,200
II
0
3,300
0
1,600
0
111
1
3,200
3,200
1,300
1,300
V
6
4,300
25,800
1,420
8,520
VI
11
3,700
40,700
800
8,800
Buliciing Area Phase 3 = 120,900 SO -FT
Driveway Area Phase 3 = 37,820 SO -FT
Name
Width
len th Fr)
Area (SO. -FT)
On -Street Parkin
>-12aru
26
1,100
28,600
0
Road "E"
28
600
16,800
0
Alley ""
16
600
9,600
0
,Alley "South'
16
175
2,800
0
Sidewalks:
rails:
Phase 3 rtoaa Areas =
Phase 3 On -Street Parking
Length: 3,750 FT
Width: 4 FT
Phase 3 Sidewalk Area =
Length: 0 FT
Width: 4 FT
Phase 3 Trail Area =
Total Impervious Area
Contributing to Boy Scout Camp
Road Pond (Phase 3) =
01,500 SQ-FT
0 SO -FT
15,000, SO -FT
0 SO -FT
231,520 SO -FT

Buildings/Driveways:
Roadsi
Tarawa Terrace II
Phase 3
Impervious Area Draining Off -Site as under Existing Conditions
Tulagi Place
B it in T :#_V=
ftUji r Una
Total Uulld'nat
Area/Unit
Total Qriveway
1
0,
3,200
0
1,200
0
11
0
3,300
0
1,600
0
111
4
3,200
12,800
1,300
5,200
V
0
4,300
0
1,420
0
VI
0
3,700
0
800
0
Building Area Phase 3 = 12;800 SO -FT
Driveway Area Phase 3 = 5,200 SO -FT
Name
I Width I Length (FT)
Area (SO. -Fr)
I On -Street Parkin
Tula i
1 26 1 200
5,200
1 0
Sidewalks:
Phase 3 Road Areas = 5,200 SO -FT
Phase 3 On -Street Parking = 0 SQ-FT
Length: 325 FT
Width: 4 FT
Phase 3 Sidewalk Area = 1,300 SOFT
Total Impervious Area Draining
Into Woods as in Existing
Conditions (Phase 3) = 24,500 SOFT

Budidings/Driveways:
Roads:
Tarawa Terrace II
Phase 4
Impervious Area Draining to Tarawa Boulevard Pond
# Un'ts.
BuildingAr nlj
TQ1a1Dui1djn2AWA
1
18
3,200
57,600
1,200
21,600
11
0
3,300
0
1,600
0
111
8
3,200
25,600
1,300
10,400
V
4
4,300
17,200
1,420
5,680
VI
1 5
3,700
18,500
800
4,000
Building Area Phase 4 = 118,900 SQ-FT
! Driveway Area Phase 4 = 41,680 SO -FT
Name
Width
Length (FT)
Area (SO. -FT)
On -Street Parkin
Tarawa
38
1,250
47,500
0
Bougainville
28
2,025
56,700
0
Mews "B"
20
450
9,000
0
Mews "C"
20
450
9,000
0
Mews "D"
1 20
450
91000
0
Si walks:
Phase 4 Road Areas= 131,200 SQ-FT
Phase 4 On -Street Parking = 0 SOFT
Length: 4,550 FT
Width: 4 FT
Phase 4 Sidewalk Area = 18,200 SQ-FT
length: 950 FT
Width: 6 FT
Phase 4 Trail Area = 5,700 SOFT
Total Impervious Area
Contributing to Boy Scout Camp
Road Pond (Phase 4) = 315,680 SO -FT

Buildings/Driveways:
Roads:
Tarawa Terrace li
Phase 4
Impervious Area Draining to Boy Scout Camp Road Pond
i i •
q Units
Idin A ni
Ar
riv A i
Igiat Rriyeway Area
1
4
3,200
12,800
1,200
4,800
II
0
3,300
0
1,600
0
III
2
3,200
6,400
1,300
2,600
V
0
4,300
0
1,420
0
VI
3
3,700
11,100
800
2,400
Building Area Phase 4 = 30,300 SQ-FT
Driveway Area Phase 4 = 9,800 SOFT
r
Name
Width
Length FT*)
Area SO.-
On -Street Parkin
Tarawa
38
875
33,250
0
Mews "E"
20
475
9,500
0
Alley "5"
16
250
4,000
0
Nnase 4 Road Areas = 46,750 50-FT
Phase 4 On -Street Parking = 0 SO -FT
Sidewalks:
Length. 1,325 FT
wide,: 4 FT
Phase 4 Sidewalk Area = 5,300 SO -FT
Trails;
Length: 2,450 FT
Width: 6 FT
Phase 4 Trail Area = - 14,700 SO -FT
Total Impervious Area
Contributing to Boy Scout Camp
Road Pond (Phase 4) = 106,860 SOFT

Tarawa Terrace 11
Phase 4
Impervious Area Draining North to Future Phase Ponds
Quildings/Driveways;
it iri
# Units
BuiOngiA ' ij
Total Building r
i r U'
jotgl Driveway
1
3
3,200
9,600
1,200
3,600
11
0
3,300
0
1,600
0
III
2
3,200
6,400
1,300
2,600
V
5
4,300
21,500
1,420
7,100
VI
0
3,700
1 0
600
0
Building Area Phase 4 : 37,500 50-FT
Driveway Area Phase 4 = 13,300 SOFT
Name
I Width
Length (Fr)
Area(SQ.-FT)
I On -Street Parkin
[Bougainville
1 28
375
10,500
0 fl
Sidewalks:
Tr ils..
Phase 4 Road Areas = 10,500 SQ-FT
Phase 4 On -Street Parking = 0 SQ-FT
Length: 1,100 FT
width: 4 FT
Phase 4 Sidewalk Area = 4,400 SQ-FT
Length: 550 FT
Width: 6 FT
Phase 4 Trail Area = 3,300 SQ-FT
Total Impervious Area Draining to
Phase 5/6 Ponds (Phase 4) = 69,000 SO -FT

Tarawa Terrace It
Phase 5
Impervious Area Calculations
BuildinasLQiiveways:
Building Type.#
Uniis
i f W i
it i Ar
Iv w
iv a
1
17
3,200
54,400
1,200
20,400
11
4
3,300
13,200
1,600
6,400
III
12
3,200
38,400
1,300
15,600
V
10
4,300
f 43,000
1,420
14,200
V1
22
3,700
1 81,400
800
17,600
Building Area Phase 5 = 230,400 50-FT
Driveway Area Phase 5 = 74,200 SCE -FT
}
Roads:
Name
Width
Length (FT)
Area(SO.-FT)
On-Streel Parkin
Guam
34
1,901
64,634
0
Bougainville
28
991
27,748
0
Mews "F"
16
530
8;480
2,280
Alle "6"
16
254
4,064
0
Alley "7"
16
416
6,656
0
Road "H"
28
609
17,052
0
Road "G"
28
787
22,036
0
Load "F"
28
539
15,092
0
Alley"8"
16
510
8;:1.60
0
Tarawa Blvd
38
1,314
49,932
0
Sidewalks:
Trails:
Phase 5 Road Areas =
Phase 5 On -Street Parking
Length: 9,142 FT
Width: 4 FT
Phase 5 Sidewalk Area =
Length: 4,468 FT
Width-, 4 FT
Phase 5 Trail Area =
223,854 SQ-FT
2,280 SO -FT
36,568 SO -FT
17,872 SO -FT
Total Impervious Area -Phase 5 = 585,174 SO -FT

- 0 . •
Tarawa Terrace. II
Phase 6
Impervious Area Calculations
-ways:
Quilging Type:'
!1
EI i
Area
D{Yeway Area1Unit
Total Oila=Wayz r
1
20
3,200
64,000
1,200
24,000
II
12
3,300
39,600
1,600
19,200
ill
22
3,200
70,400
1,300
28,600
V
15
4,300
64,500
1,420
21,300
VI
14
3,700
L51,800
1 800
11,200
Building Area Phase 6 = 290,300 SO -FT
Driveway Area Phase 6 = 104,300 SO -FT
Name
Width
Length (FT)
Area SO: Fr)
On-Strest Parkin
Saipan
32
1,520
48,640
0
Road "1"
28
1,267
35,476
0
Alley "6"
16
436
6,976
0
Road "J"
28
431
12,068
0
Bou ainville
32
1,706
54,592
0
Mews "K"
20
510
10,200
21100
Mews "J"
20
472
9,440
2,100
Mews "1"
20
510
10,200
2,100
Mews "H"
20
708
14,160
2,100
20
455
9,100
2,100
m
16
273
4,368
0
16
875
14,000
0
Sidewalks:
Trails:
Phase 6 Road Areas = 229,220 SO -FT
Phase 6 Qn-Street Parking = 10;500 SO -FT
Length: 12,092 FT
Width: 4 FT
Phase 6 Sidewalk Area = 48,368 SO -FT
Length: 3,364 FT
Width: 4 FT
Phase 6 Trail Area = 13,456 SOFT
Total Impervious Area Phase 6 = 696,144 SOFT

Project Narrative: Tarawa Terrace Phase 5
September 17, 2008
Phase 5 high density development of the "Tarawa "Terrace II neighborhood covers 34+
acres of land. The residential project includes demolition of 160 outdated, existing
housing and construction of 64 new duplex buildings which will house 128 Marines and
their families. Plans also call for construction of same new roads, utilities, and other
infrastructure. Tarawa Terrace Il is located off Highway 24 in Onslow County near
Jacksonville, North Carolina on Marine Corps Base Camp Lejeune. Stormwater runoff
will be discharged in an Unnamed Tributary to Northeast creek which is classified as
SC-HQW;NSW. Tarawa Terrace is within the White Oak River Basin. There are no
bUffCr requirements, no new road construction to access the site, and no off site drainage
for phase 5 of "Tarawa Terrace.
Storm water runoff from the site drains to either the North Guam Drive or South Guam
Drive detention ponds proposed within this phase. The two ponds stated above are part of
the modification to Storm Water Permit No. SW8 051018. This permit includes the Boy
Scout Camp Road pond and the Tarawa Boulevard Pond at the southwest corner of
Tarawa Terrace Phase 2. The Tarawa Boulevard Pond was constructed as part of Phase
of the development of the Tarawa Terrace 11 nciglib orliood, while the Boy Scout Camp
Road Pond was constructed as part of Phase 2. Storm water runoff will be routed to these
ponds through subsurface drainage. A small portion, approximately 24,348 ft'` total, of
Phase 5 was unable to be routed to the detention pond due to existing conditions. About
half of the area that is unable to be detained is because the existing road along the east
side of Phase 5 has elevations lower or approximately the same as the SFIWT which will
cause flooding in the street from the inlets overflowing. The area at the western portion
of phase 5 that is unable to be detained has the same issue as discussed above. Refer to
the Tarawa Terrace Drainage Area Map for area to bypass pond.
Sediment and Erosion Control Measures for the 34+ disturbed acres and 37% impervious
surface of phase 5 construction include silt fence along the perimeter of the site and three
temporary sediment traps to remove sediment from the expected sheet flow. Rock check
dams are also to be installed where flow has been channeli'red to assist in the removal of
sediment. Drainage areas for the silt fence, temporary sediment traps, and check dams
have been designed to North Carolina Department of Environment and Natural Resources
(NCDENR) regulations. The sediment and erosion control plan for Tarawa Terrace
Phase 5 were approved by NCDENR on August 18, 2008 under permit ID ONSLO-2009-
003.
CEIVEID
S E P 2 4 2008
BY:

Project Narrative: "Tarawa Terrace Phase 6
September 17, 2008
Phase 6 high density development of the Tarawa Terrace II neighborhood covers 43-+-
acres of land. The project includes demolition of outdated, existing housing and
construction of 83 new duplex buildings which will house 166 Marines and their families.
Plans also call for construction of some new roads, utilities, and other infrastructure.
Tarawa Terrace II is located off Highway 24 in Onslow County near .Jacksonville, North
Carolina on Marine Corps Base Camp Lejeune. Storrnwater runoff will be discharged in
an Unnamed Tributary to Northeast creek which is classified as SC;HQW;NSW. Tarawa
Terrace is within the White Oak River Basin. There are no buffer requirements, no new
road construction to access the site, and no off site drainage for phase 6 of Tarawa
Terrace.
Storm water runoff 11•0111 the site drains to the detention pond located in the central area of
this phase. The pond stated above is part of the modification to Storm Water Permit No.
SW8 051018. This permit includes the Boy Scout Camp Road pond and the Tarawa
Boulevard Pond at the southwest corner of Tarawa Terracc Phase 2. The Tarawa
Boulevard Pond was constricted as part of Phase 1 of the development of the Tarawa
Terrace ll neighborhood, while the Boy Scout Camp Road Pond was constructed as part
ol'Phase 2. Storm water runoffwill be routed to these ponds through subsurface drainage.
A small portion, approximately 12,582 ft', of Phase 6 was unable to be routed to the
detention pond due to existing conditions. The existing road along Phase 6 has elevations
lower than the SHWT which will cause flooding in the street from the inlets overflowing.
Refer to the Tarawa Terrace Drainage Area Map for area to bypass pond.
Sediment and Erosion Control Measures for 43+ disturbed acres and 38% impervious
surface Phase 6 construction include silt fence along the perimeter of the site to remove
sediment from the expected sheet flow as well as a rock check dams where flow has been
channelized. Drainage areas for the silt fence, temporary sediment traps, and check dams
have been designed to North Carolina Department of'Environment and Natural Resources
(NCDENR) regulations. The sediment and erosion control plan for "Tarawa Terrace
Phase 6 were approved by NCDENR on September 11, 2008 under permit ID ONSLO-
2009-026,
7VE
BY:

--``-f '! 1lT�
Im
TARAWA TERRACE 11
PHASES 5 & 6
STORMWATER CALCULATIONS AND SUPPLEMENT FORMS
MODIFIED PERMIT SW8 051018
CAMP LEJEUNE, NORTH CAROLINA
Prepared for:
ATLANTIC MARINE CORPS COMMUNITIES, LLC
C AR b
31 4 410-07 --
11111110
Prepared by:
OCT C 8 7nnR
BY;61'ayo 51v_/�
LITTLEJOHN ENGINEERING ASSOCIATES
1935 TWENTY-FIRST AVENUE SOUTH
NASHVILLE, TENNESSEE 37212
OCTOBER 7, 2008

m
Drainoee Area:
1'ennanem fool Depth =
Pond Surface Area:
Tarawa Terrace II Phase 5 North Pond
OIf-SiteDrrinageArea— 0AC
Taraxa Temee 11 Drainage Area - 29.4 AC
1'r+ral Uneimige'.Irru M.1 ,IC
ImpmiousArea— 11.80 AC
Percent Iruptninus - 42 ,
7 I-r. POTUI IIDTTO111 Elev, - 6.0
SAIDA Ratio =
Surlace Area Required = (R,17'1O1l00)*D,I =
fatal Volume Provided (a[ 12.0) _
Find Pxacl Curresporidiug I'enuanenl fool Surface F.leration:
Next Lower fond Con[our: l7
Next I I igher 11011d Contour. li
Lower Comour Surfrce Area: 40,438
1 l igher C01110ar Surface Area: 48, 2S l
rota Change in Surl;rce Area 7,913
Change per .01 Fr. 78
Required Surface Area 48,247
Increase Needcd to Meet the Requirement 7,807
'fetal Numtxr of Increments 101
Elevation Mecting Ilrc Surface Area Requirement 13.01 Curre:prorrrling 8,111' Elerurlurr
Surface Area tiir 13.01 48,.125 48 24" SQ 1°T
GUAM DRIVE, HOR'I'II POND
LI,I:VA'I'ION
(FT)
SURFACEARP;A
(SQ Ff)
HLEV. VOLUML
ICU Ff)
CUNIIJf,A'flVl:-VOLUME
(C) F-11
SURFACE AREA
fAC)
6.00
0
0
4
0,00
7,00
0
0
0
009
7,75
0
0
0
0.00
8.00
26,808
2.234
2,234
0,62
9.O0
1 30.034
28.406
30,640
0,69
10,00
33,384
31,694
62,334
0.77
1 Loo
36,861)
35.108
97.442
0.85
12.00
40,438
38.635
136,077
0.93
12,50
41,593
20,507
156-584
0.95
13.00
49.251
22,440
179,024
1.11
13.50
56,501
26,161
205,185
1,30
IA,OfI
60.510
29.249
234,434
k.39
15.00
66,123
6.1,29')
297,733
1,52
16,00
71,367
68,728
366,461
1 1,64
So rrar.r. Area at I;.t) =; 48,251 NO-FI'
Vnhunr fit he Cnu[rnlltd:
Volume (V) = Design Rainfall • R_v • Dmsnage Area
R_v = 0.05 t 0.009 * 1
R v=
Dcsign Rainfall- 1.5-IN
V - (15-IN)' 0.464 INIIN * 1 1,11121N • 28.4 AC
1'- 1.51
651.7is C&=177'
211,5x2 CV-1'1'
Littlejohn Engineering Associates
Page 1 of 2
I — Perccut hnlxrvious
0.42 IN11N
1,237,104 S'Q-17
514,008 SQ-F'r
IQtf9lS11Eli1ffirli!d IMMMCZ it
3.9 (From NC DENR 6NIP Manual SAIDA Ratios for Coastal Counlies}
1.11 .rC 48,217 SQ-F7'
Volume Pruridref for Perimmenr 1'md
OK
I'uluun, Required_fr '1'rn+parurr Paul
V,dimse Require d Jor 7ie++purar v I I IPilh Perinam 'I
I'ohonje,irernurlyd Fur (fmur 13. 00 F7:)
10/712008

Tarawa Terrace II Phase 5 North Pond
Find Exact Currespuud ingTenrporan Von Surface EIUVaI inn:
Next Sower fond Contour:
Next Ifigher Pond Contour:
bower Contour Vo line:
I4ighcr Curdour Volume:
Tohd C11angc in Surhice Arcs
Change per .01 Ft.
Required Vnlumc
Increase Needed to Mccl the Requirerncat
'i'oud Number ul'Incremcnts
Eilmilion Meeting the Volume Requircmenl
Volume (a, 14.24
Dra'do"n'I'inlc C'ahcnlntiom:
Temporary Pont Depth:
Target Dnmdou it - ? - 5 Ugcs
(hsflce Equation -
15.90
16.00
297.731
3h6,461
6R, 728
6 A 7
244.592
-53.150
-76.33
14.24 Cf-egm erling Tepuporary M I E&, rnriun
245,269 244,582 CI�T
CUA\1 6RI1'B NORTH POND STAGE-STOWACP, TAHI,F,
IiL$VA'17ON
W I
SURFACIiAR17A
(SQ F'1')
FLIiV.VOLUMFCUMULATIVL-VOt.UA1F
(CU FI')
(Ctl iT)
SURFACHARFA
(AC)
6.00
0
0
0
0.00
7.00
0
0
0
0.00
7.75
0
0
0
0.00
8.00
26,808
2,234
2,234
0.62
9.00
30,034
28,400
1 30.640
0.69
10.00
33,394
31,694
62„334
0.77
11.00
36.860
35,108
97,442
0.85
i2.00
40,439
38,635
136,077
093
12.50
41,59.1
20,507
T55,584
0.95
13.00
48.251
22,440
179,024
1.11
13.50
56,501
26,161
205.185
1.30
14,00
60.516
29,249
2.14,434
I.J9
II
,29)
297.733
2
G5.02
00
71,.3671
6
L1.G54878
ORI171CI7 Size (in} 2.5
ORIFICF:SiLe6n) 3
ORWICE Siza (m) .1.5
ORIPICF, Size (in) 4
14.24- 13 - 1.24 171'
Q=C_d i A' {2'gih13)^ill
A R
h=
Q=
1gQ
A -
11=
Q_
V�Q
1)
11 =
A116
Qa
VrQ =
0.8
(0) 34 SQ47'
1.132
0, 13 Cl'S
497,559 SECONDS
5.64 DAYS
0.044 SQ.h7'
1.112
0.19 CFS
341.740 SFCONDS
3.96 DAYS
1. ilvl
'53. 1 SECONDR
2.93 DAi's
0 08 7 SQ • h'T
Lo7o
0.33 CFS
195,936 SECONDS
2.27 DAN'S
OK
Littlejohn Engineering Associates Page 2 of 2 10/712008

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DraimkL, A rya:
Ppznnucnl Pool Uepth =
I'oud Su rfnee Area:
Tarawa Terrace II Phase 5 South Pond
011-Silo Drainage Arca -
0 AC
Tamea'Terrace II Drainage Area=
14.9 AC
7ornl 0rninnge Area =
14.9 AC
Impo rims Area
566 m
Percent Inrpen inus =
38 'Y.,
7.00 I''I'.
Pond 11a1tom Eles.= I U
SA/DA. Ratio
Surface Area Required= (AJ 110110i11"0.f _
Total Volume Prm ided (at 18.0) =
Rind ICsart Corresponding Pennnuent fool Surface F.Ievar ion:
Ness Lmer Fond Contour: 17
Nest Higher fend Contour; 19
Lc;n cr Contnur Surface Area: 27,184
Higher Contour Surface Area: 42.810
Total Change in Sur 1i£ee Area 15.626
Change per .01 FT. 156
Required Surface Area 16.339
Increase Needed to Meet the Requirement -845
Total Numberoflncrements -4
Elcratiuu Nlecting Iho SULIku Arca Requiremew M.96 Curre�punding 1761!' l:levurlarr
Surface Area Cu 16.96 16,.195.47
CUAM DRIVE SO(PE'II POND S'D',IGEi S'I'OItACr'1',1111,F,
650 351 SQ-F'T
246,560 SO-F7'
Permanent Pool Iaev. = 18.0
4.05 (From NC DI:NR DNIP Manual SAMA Ratios for Coastal Counties)
11,60 lie - 26.339 .SQ-FT
11X,„4F ('f`-F1' Yuhune Prorided1i/r Yermunenr Puul
4C1-f 1US
[.I.EVA1 ION
(PT)
SURFACE AREA
(SQ FT)
IEI.EV. VOLUNIE
DCU FCI
CUNII)[.A'I'IVE-VOLUMI.
(CU Ff)
SURFACE AREA
1AC
11.00
0
0
0
0.00
12.75
0
0
0
0.00
13.00
16,713
1,393
093
0.38
14.00
19,159
17.922
19,315
0.44
15 00
1 21.715
20.424
39,739
OSU
1600
24.393
23.041
62.780
0.56
17.00
27,194
25,776
89,555
0.62
1750
28.632
13?52
102.508
0.66
18.00
34.491
15.759
118,266
0.79
18.50
40,559
19.742
137,008
0.93
19,00
42.810
20.940
157.949
0.99
2010
;6.552
44.G68
21}251G
1.07
20.90
49_22
42,GS6
245,162
1.11
..In'r:£" Are:£:£r 18.e 1'f. 34,401 .VQ-f'7' �
Vulmne In be ('line ndled:
Volume (1r) = Design Rainfall + R_r • Drainage Area
R s--0.05+0.00°)"1
R V-
Design Rainfall - 1 S-IN
V ={ 15-IN)' 0.464 1WIN ` I P'I'1121N • 18.55 AC.
I'- 0.73 ACV['
11.8U.1 (: U47
15si"10 Cf'-Jr 7
16, eJ9 S& F.T Uh'
I - Perceril Imperious =
0,39 I NII N
Volume Required,j£r 7rmporary 1'-d
VW, Required firr 7i'mp, Paul Wilb pemumenr Follow Armor
For (Imm A.94 FT)
Page 1 of 2
Littlejohn Engineering Associates 101712008

Tarawa Terrace II Phase 5 South Pond
Find Corrrspouding TCIII pnra n' Pmul Su r[aer 1S1c+al inn
\est 1-ou ei fond Contour:
Nest Th,,1ier frond Contour:
Lotter Contour Volume:
Iffglicr Contour Volume:
'Total Change in Surface Area
Change per .01 FI.
Required Volume
hicrcase Needed to \Seel the Requirement
Total Nutnbu orincrements
Eilcr alion Meeting the Volume Requirement
Volume (cl 18.84
Dra rsdue 11'1'imr C:druhntions:
Tcmporar) Pool Drpth:
7iirger 2 - 5 Daps
Orifice Fqualion
19.00
20.00
157,848
-'02,516
44,668
447
150.069
-7,779
-16.42
18.81 Cnrrrsnnrrdirrh Trngnrnrl' h-1 Elernliwt
5r{s15 1 IS11,669 r_'IL17
GUAR\I DRIVE SOU I'll POND STAGE -STORAGE. FABLE
EI.EVA'I'ION
070
SURFACi? AKFA
IS Q F'I')
ELEV. VOLUMIT
ICU FT
CUMU1-ATIVE VOIAMI:
ICU F?'
SURFACE ARGA
fAC)
11.00
0
0
0
0,00
12.75
0
0
0
000
I3.00
16,713
1,393
1.393
0,39
14.00
19,159
17,922
19,315
0,44
15.00
21.715
2M24
39.739
0.50
I6.00
24.393
23.04I
62.790
056
17.00
27,184
25,776
89,555
0.62
17.50
28,632
13,952
102,508
066
18,00
34.491
15.758
119.266
0.79
18,50
40,559
18.742
137.008
0.93
19.00
42.810
20,840
157,849
0.98
20.00
-1G.5"
1d.668
202516
1.07
2010
48,22^_
42.646
245.152
1.11
ORIFICE Size (in) 1.75
ORIFICE Size (in) 2
tIItIFIC1'. Sirc iu:I `_5
ORIHCESize (in) 3
ORIFICE Size (in) 35
ORWICli Si>c (iu) 4
19.0 - I8,0 - 1.00 fT
Q = C_I . A • Wg•h13)^ I12
Cd=
:I =
!r =
Q=
V/Q
it -
Q
h-
Q-
Vx?
.a -
h=
Q=
ViQ =
h=
Q=
V7Q =
0.8
0.017 SQ-F7'
0.927
0-06 CFS
533r192 SECONDS
6.17 DAPS
0.022 SQ-FT
0 917
0.08 C1'S
410,761) SECONDS
4.75 DAPS
0.11,31 S'r-, 7'
ff,.Ylr:
1:Fs
205,932 SL(`t.rNl)S
0,04V SQ-!7
0,N75
0.17 US
196,860 SECONDS
2.16 DAYS
0,067 SQ-PT
f1854
0.23 CI S
1.18,949 SECONDS
1.61 PAYS
0AN7 SQ-FT
A.,Y 13
0.30 CFS
1073115 SECONDS
1.'_5 DAYS
0K
Page 2 of 2
Littlejohn Engineering Associates 10/712008

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Draitinye Area;
Pennanent fool Depth -
fund Snrfaee Arca:
SAIDA Ratio
Tarawa Terrace II Phase 6 Pond
Ofl-S 9e llm b,agc Area=
0 AC
PTatnaee Area =
39,4 AC
Tolal 1)...mrgc ,b-
39.-1 11C
Iutpervious Area
14, 61 AC
11cr'cent Ingrers'ious =
38 '%.
7.5 FI'.
Pond Ilottorn Fiev, = 75
SurflccArca Required = (R,iT10110n)"IM =
'I'Oil I Valrrrrll' Provided (at 15,0) =
Fiud Fnart Corresponding Verrn:rlrr'Irl Pout Surface Eive alion:
Next Lower food Contour:
Next I Iigher Pond Contour:
Lower Contour Surface Arra:
Higher Contour Surface Area:
'rolal Change in Surface Area
Change per .01 1T.
Required Surface Area
Increase Needed to ivlect the Requirement
Total Numbcr of Inurmcnls
elevation \letting the Surface Area Requiremenl
Surface Area Cm 14.05
1,71e; 64 SQ-FT
645.089 S2-17
Pennanenl POaI iilcv. - 15.0
3.3 (From NC DF-NR I1\IP Manual SAIDA Ratios for Coastal Counties)
1,32,IC - 57,323 SQ-1,-7-
245,491 (lLri' I'ultmw Prurided Jirr Perrmuaenr PuuI
1400
16.00
56,520
78.431
21,911
219
57,323
803
5
14,05 Cir ,cp-mfing 13,111' lilrrrrlim,
7,541.3.. 57,123 A'L)-FT
1'IIASE:6 POND STAG.V-STORAGE,, I'A 131,);
ELEVATION
(FI)
SURFACE AREA
IS Q 17'1')
ELEV, VOLUML
WU F0
CUMM A'I'IVt VO1JJMF
ICU 17-r)
3UR1:AC1i AREA
IACI
7.50
0
0
0
000
9.38
0
0
0
0.00
10.00
42,059
8.762
8,762
0.Q7
11.00
45.449
43,743
52,505
Url
12.00
49.020
47.22.1
99,729
1.13
13.00
52.724
50.861
i50.589
1.21
14.00
56.520
54.611
205.200
1.30
14.50
58.495
28.752
233,953
1.34
15.0U
66,137
31,138
265.091
1.52
15,50
72.284
34.594
299.685
1.66
16.00
78,43$
37,669
337353
1,90
17,00
85,672
92,025
419,178
L97
18X)
94,5GG
90,062
509,461
2.17
19.00
ID0.942
97.737
607,197
2.32
Surface Arco at 15,11 = 4037 SU4.-7.
Volume to 1w Cnulrullcrl:
Volume (V)- Desipi Rainfall • R_v + Drainage Area
R v e 0,65+0.009*1
u v-
Design R[iiurall= I,5-IN
V - (1.5-1N) • 0.454 MIN • I F1'I121N • 39.4 AC
I' 1,91 AC FT
Cl FT
.i%,32.? AO -IT (W
I - Percelll IllgmNieus = 38
0.39 IN11N
Vulume Rcquired ir,v 7e'rupnar.l• foul
Toluene Required Ji+r Ternlrurmy Pour 1f7Nr Perim ent
Vnluau•,lernugpa! Fur (in- IS. 0 FT)
Littlejohn Engineering Associates Page 1 of 2 1017/2008

Tarawa Terrace II Phase 6 Pond
Mud Exacl Corresponding'1'enlpnrar) fool Surlace Elve ;anon
Next Lowel1'Iald C0111OUT:
16.00
Next I ligher fond Contour.
17.60
1-0u er Conivur Volume:
337,353
Ilig,her Cnmuur Vnlumc:
419,37N
total Challg'e 111 Vu lu1nC
82.025
Changeper.ol Ft.
830
Recpnred V01111114
W NO
Increase Needed to Alcci the Requirement
11.037
Toull Num" of increm, tms
I4,4f,
Hluvatiun Meeting the Volume Requirouent
M.14 Correyanding Temporurr I6a,! Efewithm
Volume(u! )6.14
35i,297-55 > 349.391) r'!�-Fi
PHASE. 6POND STAC;I S'I'ORACETARLE
Drawdomi Time C'alcldatiuns:
Temporary Pool Depth;
Torgrr Draledouvl - i - 5 DaYs
Orifice Equatinel -
171.1iVA'I'ION SURFACE AREA EIA V. VOI.IJ%1F, Cl1h1l1LA'i'1VIi-�'OI,IIyIli:SURFACli AREA
fF"['] ISQ FT I ICU FF) (C1f FT l (AC) J
7.50
0
0
O
0,06
9.38
0
0
0
0.00
10,00
42,059
8,762
R,762
097
11:00
45.449
43,74.1
51505
1 04
12.00
49,020
47,223
99329
1.13
13.00
52.724
50.861
150,589
1.21
1 Uy)
50,520
54,61 1
205,200
1.30
14.50
1 59,495
29,752
233,953
1.34
15.00
66.1.17
.11.139
205.001
1.52
15.50
72.284
34.594
299.685
1.66
16,00
79,431
37,668
337.353
1.80
17,60
85.672
92.025
419,37E
197
ISMO
94,566
110,082
509.461
2.17
1900,
1001142
97.737
607.197
2.32
ORIFICE:Size (in) 3
ORIFICE Size (in) 3.5
ORIFICr Size lin) 4
ORIFICE Size (in) 5
16.14-15.0= 1,14 F'1.
Q a C_d • A • (2•g•(10))^ I12
Cd=
0k
0.Od9 SQ-1"1'
1.020
(.18 CPS
453,411 SECONDS
5.25 DAYS
0.067 SQ-FT
U.999
0.25 CI'S
336.575 SECONDS
3.90 DAYS
rd'17h
O : ` C 7S
_•f7,4 _'t Si'.0)m1
3.01 IM VS
1) 136 SQ-1-T
n, 9.;6
0.49 CFS
170,338 SECONDS
1.97 DAPS
OK
Littlejohn Engineering Associates Page 2 of 2 1C11712008

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5 EP 2 4 26op

grMACTEC
engineering and constructing a better tomorrow
27 August 2008
Mr. "Thomas J. Davis, P.E-.
Littlejohn Engineering Associates
1935 Twenty -First Avenue, Socrtll
Nashville;, TN 37212
SubJect: Seasonal High Water'i'uble Evaination
Taramil Terrace, Section 5 and G
Camp Lejeune, Nurtfl Carolina
MACTEC Project 6470-08-2196
Dear Mr. Davis;
MACTEC C E ngineuring nod Ccrosulting, Inc. (MAC 1---'Q is pleased to suhmit this report concerning the
prelinlinaary .soil evaaluaation of proposed siormwater detention ponds within the TarawaTerrace, Section 5
Mid 0 11 Canlp L,ejeunc, North Carolina(projQct site). 'This report address the scope of services detailed in
MAC'TEC's proposal 08-IZAL-335 dated August 21, 2008. The report documents the methodology used
to asses the approximate depth to a seasonal Nigh water table (SHWT).
Background and Niettlodology
The project site is located within the "Tarawa 'Terrace housing complex oil Marine: Corps Base Camp
I- jel.rile, Onslow County, North Catrolina. "The areas evaluated are located on the east and west side of
Tarawa Boulevard north of the intersection of Tarawa Bnulcvar'd atnd Guam Drive. The project site is a
ulilitaa-y housing complex that is under going redevelopment,
MACTEC soil scientist conducted a preliminary evaluation a1' the soils within thrcc areas proposed for
stormwater retention ponds on 25 August 2009. Three; hand -auger hurings were; aclvariced at pre-
determined boring locations. This evalua€ion included field descriptions for soil textsare; color, structure;
and the approximate depth to SFIWT if possible. The SHWT depth was based on soil characteristics
through identification of low chroma redoxinlot'phic features (mottles). All clepths presented are below
the land surface.
Findillg,'s
The soils in the vicinity of the areas evaluated within the project site are mapped as Baymeaade fine sand
ancf craven Fine sandy loam soil series according to the Soil ,Survey (lf Onslokv Comar, Almrth Caiwlirtra
(USDA 1992), The soil boring at. Boring I revealed soils generally similar to the Bayrlieade soil sc;rics.
The soil boring at Boring 2 revealed soil than appeared to be previously placed fill nratc:rial ors top of soil
aNIACTEC t?uginecrhtg u aat Cwisutfiug, Inc. RECIF,1
33tf1 Alhintic AVe;naal: • Raleigh, NC 27&0-4 •['hone: 919.876,0416 • Fax: 919.8:ik.813(,
SEP 2 4 2008
corn

Torairn Terrace, ,Serlirm J ours G ho.jecl tVr;.: 0 7{)4W-2/96
Seoxoual high Waia -Table l;vahmrlon 27A ngusr 20X0,1
011.4mv Cormrli', Norlh f:m'olrn« Page 2.
generally similar to the fviuckalce loan} Soil sc,rics. The soil boring at Borim, 3 1.0vo.,11 l soils getlerally
Simi€ar to the Craven soil series.
The Baymeadc fine Sand soil seric,s consists of well (,rimed soils on low ridges and convex uplands.
These sails For'nied in ccxa'sc textured scclimcnt.s with slopes ranging from O to Cl perccnt. The Cravcsl
fine sandy loath soils consists of moderately well c1m m,:d soils on npl;ulcls near large clraisegeways and on
short side slopes. 'these soils formed ill fine textnrcd marine sediments with slopes rangim from 4 to 8
porcent. Included within this soil slapping unit are small areas of Nluckalcc soils in narrow
drainagcways. The Muckalee loan, soils consist of poorly drafoted soils on floodplains. These soils
forrlled in moderately coal -se textln'ed recent alluviurlt with itcru'ly level slopes. "These soils may bu folmd
ns inclusions in ,mils mapped ;ls the Craven soil series.
"rile SHWT depth was based oil soil characteristics througlh identification of low chrorna mottles. The
low chroma rioules ,suggest past C01)(H io)ls of saturation and reducing soil conditions.
Evidence of a SHWT was ohservcd from 24 inches to 38 inches below the cxi.stim, land .surface in tic
areas evaluated. Evidence of a SHWT was observed at 38" in Boring 1, 24" in Boring 2 and 26' in
F3oring 3.
Observations
Soil Boring 1 — Back slope 4-6%
A 1 0-4" Fine sandy loam, granular, very friable, nose sticky, non plastic, 10YR 4/2
a A2 4-8" Fine sanely loam, granular, very friable, non sticky, non plastic, I OYR 5/4
o E 8-18" Loamy f me sane,, granular, very friable, non sticky, non plastic, I OYR 6/2
® Bt 1 18-38" Sandy loath, gramdar, very friable, non sticky, non plashe, IOYR 4/4 with I OYR
5/4 mottles
0 13t2 38-45" Sandy clay loans, weak fine suhangular, friable sticky, plastic, 2.5Y 5/4 with
I OYR 6/2 and l OYR 5/8 mottles
13Cg/Cg 45-60" Sandy clay loam, massive, friable, sticky, plastic, IOYR 6/2 with 5YR 4/6
mottles
n SHWT observed at 38". saturation and free water greater than 60"
Soil Bnrin;7 2 —Fool .slope; 2-41/r,
o FI 0-8" Finc sanely loam, granular, very friable, non sticky, non plastic, IOYR 3/2
® F2 8-14" Dine sandy loam, granular, very friable, non sticky, non plastic, 2.5Y 5/4
0 F3 14-24" Sandy ,oast, granular, very friable, lion sticky, non plastic, mixed I OYR 5/4 and
2.5Y 5/3 with 10YI2 5/8 mottles
O A 24-36" Native Iilticky loam, granular, friable, non sticky, non plastic, 10YR 2/1
O Cg 36-60" Loamy fine sand, granular, very friable, non sticky, non plastic, 2,5Y 6/2
• SHWTobserved at 24", the depth where native soil wits csticountered, saturation and free
water observed at 30" and 34" respectively
o First 24" of soil appeared to he old C11 material over native, llydric soils
RFCFJNTFD
SEP 2 4 2008
BY: _

Tarawa Terrace, .Section 5 and (i
Sumonal 11(gh Maer 7M)le Evrrhrrmon
Onslow cou nv, Nor717 Carolina
Soil Boring 3 — Back slope 4-6%
AIACTGC Projvrt No.: 0470-08-2196
27Augtcsr 2008
Page 3
• Al 0-5" Fine sandy loam, granular, very Friable, non sticky, iron plastic, 2.5Y 513
• A2 5-10" Fine sanely loam, granular, very friable, non sticky, non plastic, 2.5Y 5/4
• Bi l 10-26" Clay loans, weak fine suhangular blocky, firm, sticky, plastic, 10YR 5/4 with
7.5YR 5/6 mottic;s
• Bl2 26-,;{}„Clay, rrrassivc, very fir€tr, v€sry sticky, very plastic, 10YR 516 with 10YR 6/2 and
5YR 5/6 mottles
• BO 36-54" Clay, massive, very firm, very sticky, very plastic, 10YR 5/4 with 2.5Y 6/1 and
5YR 4/6 mottles; at€ger refusal on a root at 54"
• SHWTobscrvc d at 26", tit€tnration and free water greater than 54"
Surn1narY
IMACTI C has completed a preliminary evaluation of the soils within three areas proposed for slormwater
retention ponds within Tarawa 'Terrace, Section 5 and 6 at Camp Lejeune, North Carolina. The
evaluation included determining approximate depths to the SHWT at three locations delcrmined by the
client. Evidence of a SI-1W'T was ohscrvvcl from 24 inches to 38 inches Below the existing land surft€ce
in the areas evaluated. Evidence of it S1IWT was observed at 38" in Boring 1, 24" in Boring 2 and 26" in
Boring 3.
This report is intended for the use, of I, ittlejohn Engineering Associates subject to contrtretual tertris
between Littlejohn Bilgincering Associates and MAC1'EEC. Reliance on this document by any other party
is prohibited without the exfVOSsecl, written consent of MACIT C. Use: of this report for purposes beyond
those reasonably intencled by Littlejohn Engineering Associates and MACTR.' will he at the stile risk of
tltc user.
Closing
We appreciate tyre Opportunity to conduct these environmental services to Littlejohn Hngineering
Associates. Please contact Josh Witherspoon at [phone] if YOU have any questions regarding this
report.
Sincerely,
1bIACT1 C ENGINEERING AND CONSULTING, INC.
J(J—,At Witherspoon, LSS
Senior Scientist
IZC; I-l/J W W/jww
i 91a t i m ima I -* ,rarau;, Tc,nux•Cr'ar,w,i'&•rt.gw u-iI ar,l,dnc
��14 Apl�ioav;f�
Richard G. I-larmon, P.W.S.
Principal Scientist

Project Narrative: Tarawa Terrace II
The proposed project plans call for the redevelopment of the Tarawa Terrace 11
neighborhood. Located off of Highway 24 near Jacksonville, North Carolina, the
existing 'Tarawa Terrace 11 neighborhood is made up of houses constructed during the
1940's. This project calls for demolition of 817 existing units to be replaced by 389
duplex buildings (778 units). Existing roads will be repaved and reused for the
redeveloped neighborhood. Demolition and construction is to be undertaken in six
phases with one phase beginning upon completion of the previous phase.
Water quality requirements are to be satisfied using wet detention basins. Currently an
existing r"et detention pond can be found at the southern edge of the project boundary.
This pond is permitted as the Phase III Pond for Tarawa Terrace I and is presently
designed to handle runoff from the Tarawa•Terrace I neighborhood as well a small
portion of the Tarawa Terrace 11 project area. Redevelopment plans call for this pond to
be removed from its current project and to be included in the Tarawa Terrace 11 moiect.
In the reddevelopment, the old III Pond will be referred to as the Tarawa Boulevard
Pond. The pond will continue to handle the ninoff from Tarawa Terrace I for which it
was originally designed. This off -site drainage amounts to approximately 29 acres with ✓
40% impervious areas. In addition, new impervious areas to be constructed in Tarawa
Terrace I I will be routed to the Tarawa Boulevard Pond. The pond will receive drainage
from Phases I, 3, and 4 of Tarawa Terrace 11 as well as drainage from Tarawa Terrace I
to be considered "off -site" for the purpose of permitting. To the east of the
neighborhood, a second wet detention basin is planned. This basin shall be referred to as
the Boy Scout Camp Road Pond and will receive drainage from Phases 2, 3, and 4 of
Tarawa Terrace 11.
As the project will be reducing the density of the neighborhood and shall be considered
redevelopment, a small amount of drainage will be allowed to drain off -site where it is
unpractical to route it to a pond. Low-lying cul-de-sacs where it would be unrealistic to
route the runoff out of the cul-de-sac such as Hungnam Place and Tulagi Place will
maintain existing drainage patterns and route runoff into wooded and well -grassed areas
in such a manner as to promote infiltration into well -draining soils which are
characteristic of this project.
Wet detention basin locations and designs have not yet been finalized for Phases Sand 6
as well as for portions of Phase 2 and Phase 4. Drainage area and impervious area
estimates will be included in the Stannwater Permit Application and shown as future
phases.

j .I
DETENTION POND ANALYSIS FILE NAME: G:\DATA\WPDATA\WQS\POND1051018-1.WK1
PROJECT#: SW8 051018-1 REVIEWER: P.Bartlett
PROJECT NAME: Tarawa Terrace 11
Tar.Blvd.Pond: Ph 1, 3, 4
DATE:.
22-Nov-05
Receiving Stream:
Northeast Creek
Class:
SC HOW NSW
Drainage Basin:
White Oak
Index No.
19-16-(3.5)
Site Area
202.00 acres
Drainage Area
square feet
Area =
80.85 acres
IMPERVIOUS AREAS
Rational C
OS Bldgs
439900.00
square feet
0.95
OS Streets
297390.00
square feet
0.95
OS pkg/drives
150660-00
square feet
0.95
OS sidewalks
68168.00
square feet
0.95
OS other
13957.00
square feet
0.95
OFFS (Tar.Terr.1)
503031-00
square feet
0.95
TOTAL
J. 7.,10 00:squ
are feet
Rational Cc= 0.51
SURFACE AREA CALCULATION
% IMPERVIOUS
41.83%
SA/DA Ratio
2.93%
Des. Depth
5.4
Req. SA
103117 sf
TSS:
90
Prov. SA
sf
VOLUME CALCULATION * place a "11" in the box if Rational is used
Rational ?*
FOREBAY
Des. Storm
inches
Perm. Pool Volume=
555343
Rv=
0.43
Req. Forebay Volume=
111068.6
Bottom
6 msl
Provided Volume=
121175.00
Perm. Pool
msl
Percent=
Design Pool
12,6 msl
Design SA
136807 sf
Req. Volume
iii1i157
cf
SA @ = 79496
130181 136807
Prov. Volume
i747672:':
cf
Elevation- 6
11.4 12.60
vs. 159,439 cf proposed
ORIFICE CALCULATION
Avg. Head = 0.48 ft Q2 Area = 31.43 sq. in.
Flow Q2, cfs 0.724 cfs Q5 Area = 12.57 sq. in.
Flow Q5, cfs 0.290 cfs Orifice Area 28.27 sq. in.
No. of Orifices i1i Q=
0.652 cfs
in x Diameter, inches weir H x W in
Drawdown days
COMMENTS
Surface Area , Volume and Orifice are within Design Guideline,,

DETENTION POND ANALYSIS FILE NAME: G:IDATAIWPDATAIWQSIPOND1051018-2.WK1
PROJECT #: SW8 051018-2 REVIEWER: P.Bartlett
PROJECT NAME: Tarawa Terrace it
Boy Scout Camp Rd.Pond,Ph2 DATE: 22-Nov-05
Receiving Stream: Northeast Creek Class: SC HQW NSW
Drainage Basin: White Oak index No. 19-16-(3.5)
Site Area 202.00 acres
Drainage Area ;::16 0 3 square feet Area =
IMPERVIOUS AREAS
37.60 acres
Rational C
OS Bldgs
304350.00
square feet
0.95
OS Streets
193082.00
square feet
0.95
OS pkgldrives
101420.00
square feet
0.95 j Llt�
OS sidewalks
44600.00
square feet
0.95
OS other
43611,00
square feet
0.95
square feet
TOTAL
i'67063Q}
square feet
Rational Cc= 0.51
SURFACE AREA CALCULATION
% IMPERVIOUS 41.95%
Des. Depth 5
TSS: 90
SAIDA Ratio 2.94%
Req. SA 48094 sf
Prov. SA €51$' sf
VOLUME CALCULATION * place a "1" in the box if Rational is used
Rational ?*
FOREBAY
Des. Storm
i::f3€
inches
Perm. Pool Volume=
158557
Rv=
0.43
Req. Forebay Volume=
31711.4
Bottom
4.5 msl
Provided Volume=
38442.00
Perm. Pool
9 5f:. msl
Percent=4w2°of
Design Pool
10.54 msl
Design SA
57548 sf
Req. Volume
''85i
cf
SA @ = 30216
59831 57548
Prov. Volume
€':599fi3.
cf
Elevation= 4.5
9.5 10.54
vs. 58,690 cf proposed
ORIFICE CALCULATION
Avg. Head =
0.44 ft
Q2 Area =
15.28
sq. in.
Flow Q2, cfs
0.338 cfs
Q5 Area =
6.11
sq. in.
Flow Q5, cfs
0.135 cfs
Orifice Area
12.57
sq. in.
No. of Orifices
i'1
Q=
0.278
cfs
m a
Di eter inches
iQ` weir H x W
in
x
in
Drawdown = days
COMMENTS
Surface Area , Volume and Orifice are within Design Guideline<_

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