SW8051217_HISTORICAL FILE_20060213

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 051 z I
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2_oocpo213
YYYYMMDD

d'
F W ATF9 Michael F. Easley, Governor
O�
�G William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
QY
Y Alan W. Klimek, P.E. Director
Division of Water Quality
February 13, 2006
Mr. Eddie Anderson, Director of Facilities
New Hanover County Schools
6410 Carolina Beach Road
Wilmington, NC 28412
Subject: Stormwater Permit No. SW8 051217
Ogden Elementary School
High Density Project
New Hanover County
Dear Mr. Anderson:
The Wilmington Regional Office received a complete Stormwater Management Permit
Application for Ogden Elementary School on February 10, 2006. Staff review of the plans and
specifications has determined that the project, as proposed, will comply with the Stormwater
Regulations set forth in Title 15A NCAC 2H.1000. We are forwarding Permit No. SW8 051217
dated February 13, 2006, for the construction of the subject project.
This permit shall be effective from the date of issuance until February 13, 2016, and shall be
subject to the conditions and limitations as specified therein. Please pay special attention to
the Operation and Maintenance requirements in this permit. Failure to establish an adequate
system for operation and maintenance of the stormwater management system will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have
the right to request an adjudicatory hearing upon written request within sixty (60) days
following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands
are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact Linda Lewis, or me at [phone].
Sin» cer ly,
C/
Edward Beck
Regional Supervisor
Surface Water Protection Section
ENB/arl: S:\WQS\STORMWAT\PERMIT\051217.feb06
cc: Ken Loring, P.E., CLH Design
Tony Roberts, New Hanover County Building Inspections
City of Wilmington Development Services
Beth E. Wetherill, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel-877-623.6748
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Internet: h2o.enr.state.nc.us
One
iOOrCilClrOhlld
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10% Post Consumer Paper
4AW11rally

State Stormwater Management Systems
Permit No. SW8 051217
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Eddie Anderson & New Hanover County Schools
Ogden Elementary School
3637 Middle Sound Loop Road, Wilmington, New Hanover County
FOR THE
construction, operation and maintenance of three infiltration basins in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules')
and the approved stormwater management plans and specifications and other
supporting data as attached and on file with and approved by the Division of Water
Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until February 13, 2016, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.6 on page 3 of this permit. The stormwater
controls labeled B1, B2 and C have been designed to handle the runoff from
62,320 ft, 49,960 ft and 51,030 ft , respectively, of impervious area. Each
infiltration basin must be operated with a 50' vegetated filter.
3. The overall tract and each individual drainage area will be limited to the amount
of built -upon area indicated on page 3 of this permit, and per approved plans.
This permit does not make provision for any future built -upon area.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.
5. The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
Page 2 of 7

State Stormwater Management Systems
Permit No.
SW8 051217
6. The
following design criteria have been provided in the infiltration basin and must
be maintained at design condition:
Basin Number:
B1
B2
C
a.
Drainage Area, acres:
2.24
3.17
1.59
Onsite, ft2:
97,574
138,085
69,360
Offsite, ftz:
0
0
0
b.
Total Impervious Surfaces, ft2:
62,320
49,960
51,030
C.
Design Storm, inches:
1.5
1.5
1.5
d.
Basin Depth, feet:
2.0
2.0
2.0
e.
Bottom Elevation, FMSL:
28.0
29.0
29.4
f.
Bottom Surface Area, ftz:
3,395
4,830
3,590
g.
Bypass Weir Elevation, FMSL:
30.0
30.5
30.5
h.
Permitted Storage Volume, ft3:
7,675
8,265
6,765
i.
Type of Soil:
Seagate
j.
Expected Infiltration Rate, in/hr:
12.0
k.
Seasonal High Water Table, FMSL:
26.0
27.0
27.4
I.
Time to Draw Down, hours:
<3
<10
<7
M.
Receiving Stream/River Basin:
Howe Creek / Cape Fear
n.
Stream Index Number:
18-87-
0.
Classification of Water Body:
"SA ORW"
(project is outside the 575' AEC)
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in its entirety,
vegetated and operational for its intended use prior to the construction of any
built -upon surface.
2. During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other
supporting data.
4. 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.
Page 3 of 7

State Stormwater Management Systems
Permit No. SW8 051217
5. The permittee shall at all times provide the operation and maintenance
necessary to assure the permitted stormwater system functions at optimum
efficiency. The approved Operation and Maintenance Plan must be followed in
its entirety and maintenance must occur at the scheduled intervals including, but
not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowin.9 and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.
f. Debris removal and unclogging of bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
6. 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.
7. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation_ as a stormwater treatment device,
and prior to occupancy of the facility.
8. Access to the stormwater facilities shall be maintained via appropriate
easements at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed
below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project'name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee,
for which Sedimentation and Erosion Control Plan approval or a CAMA
Major permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by
the Permittee for a minimum of ten years from the date of the completion of
construction.
12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame
specified in the notice, the permittee shall submit a written time schedule to the
Director for modifying the site to meet minimum requirements. The permittee
shall provide copies of revised plans and certification in writing to the Director
that the changes have been made.
Page 4 of 7

State Stormwater Management Systems
Permit No. SW8 051217
III. GENERAL CONDITIONS
1. This permit is not transferable except after notice to and approval by the Director.
In the event of a change of ownership, or a name change, the permittee must
submit a formal permit transfer request to the Division of Water Quality,
accompanied by a completed name/ownership change form, documentation
from the parties involved, and other supporting materials as may be appropriate.
The approval of this request will be considered on its merits and may or may not
be approved. The permittee is responsible for compliance with all permit
conditions until such time as the Division approves the transfer request.
2. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division of Water Quality, in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
3. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
4. In the event that the facilities fail to perform satisfactorily, including the creation
of nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
5. The permittee grants DENR Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
6. The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
7. Unless specified elsewhere, permanent seeding requirements for the stormwater
control must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
8. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.
9. The permittee shall notify the Division any name, ownership or mailing address
changes within 30 days.
Permit issued this the 13th day of February 2006.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
/orHian vv. Kumm r.t., uirector
Division of Water Quality
By Authority of the Environmental Management Commission
Page 5 of 7

OFFICE USE ONLY
Date Received
Fee Paid
Permit Number
11
1-Zcf-LC0
ooe, •% 7d77
1 v,} /a/7
MCC/- l-/7- ZC� -_ _
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This form may be photocopied for use as an original
L GENERAL INFORMATION
1. Applicants name (specify the name of the corporation, individual, etc. who owns the project):
N�•N (�r�Noy�1 co�lt�tZ Y �Ca+oot_S
2. Print Owner/Signing Official's name and title (person legally responsible for facility and compliance):
�i�bl� f d1�1 TDlV-1'cLTOIZ t=A tLtTlF`,.
3. Mailing Address for person listed in item 2 above:
I.P LI 1 O
City: Vy 1 t.rn i rJ CrTO State: N c— Zip: ZO Lt 1 Z
Telephone Number: N " L1Z1S Z
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on plans,
specifications, letters, operation and maintenance agreements, etc.):
nq.�AJ.I �l_l'✓MF�IVT'.4�Y �.XA-FOOL
5. Location of Project (street address): ve
Minot£ SO 1NI7A arm
City: County: t` E.w i� ANOV 1—cCZ
6. Directions to project (from nearest major intersection):
.W .
7. Latitude: '!�� Iln Longitude:—I^1�'-i�1� 15�' of project
B. Contact person who can answer questions about the project:
Name: Telephone Number: l'l ) lof- (p-IIlp
II. PERMIT INFORMATION:
1. Specify whether project is (check one): 4_New Renewal Modification
Form SWU-101 Version 3.99 Page] of4

2. If this application is being submitted as the result of a renewal or modification to an existing permit, list the
existing permit number WA and its Issue date (if known) N4.&
3. Specify the type of project (check one)
_Low Density High Density Redevelop _General Permit Other
4. Additional Project Requirements (check applicable blanks):
_CAMA Major Sedimentation/Erosion Control _404/401 Permit _NPDES Stormwater
Information on required state permits can be obtained by contacting the Customer Service Center at
1-877-623-6748.
in. 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 .
nlza�t w Pit isynU Lt__ ?)r_tXEArK1-.D T1Ff:oL1 C4- —�Ntll tgA-:[I MA
r✓Pr--A N Si✓&_ O 115(crt I CALr-U L-A<11 tiK1t:>—�-50VE-
Iy hiZZ4.
2. Stormwater runoff from this project drains to the `*n VN4'. r"EK-. River basin.
3. Total Project Area: IZ acres 4. Project Built Upon Area: %
5. How many drainage areas does the project have?_
6. Complete the following information for each drainage area. If there are more than two drainage areas in the
project, attach an additional sheet with the information for each area provided in the same format as below.
Basin.Information
Drainage Area' IN
Drainage Area - 1S?-
Receiving Stream Name
W -
Receiving Stream Class
Drainage Area
Z , Zy Qc._
3
Existing Impervious{ Area
0-
Proposed Impervious*Area
(O ZO • .
% Impervious" Area (total)
(y_3 ,
Impervious` Surface Area
Drainage Area .: p51
Drainage Area t5Z,
On -site Buildings
S • (_ .
On -site Streets
Q
D
On -site Parking
Ol O c7•r.
25 S�10 S.
On -site SidewalksL'P
3S
Other on -site
130 S .r.
Off -site
O
Total: (02,'32O
1 Total: (0Q
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of 4

Basin Information
Drainage Area "• L
ge Are
Receiving Stream Name
Receiving Stream Class
Drainage Area
i , cj c,
Existing Impervious" Area
Proposed Impervious`Area
O S •F.
% Impervious` Area (total)
Impervious" Surface Area
Drainage Areal G
Dr inage Area
On -site Buildings
On -site Streets
O
On -site Parking
Z S.-
On-site Sidewalks
Other on -site
U S -
Off -site
p
Total: I (7-5_>I
Total:
Impervious area is defined as the built upon area including, but not limited to, buildings, roads, parking areas,
sidewalks, gravel areas, etc.
Form SWU-101 Version 3.99 Page 2 of

7. How was the off -site impervious area listed above derived? W
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
The following italicized deed restrictions and protective covenants are required to be recorded for all
subdivisions, outparcels and future development prior to the sale of any lot. If lot sizes vary significantly, a table
listing each lot number, size and the allowable built -upon area for each lot must be provided as an attachment.
1. The following covenants are intended to ensure ongoing compliance with state stormwater management permit number
f446Z as issued by the Division of Water Quality. These covenants may not be
changed or deleted without the consent of the State.
2. No more than(�/�- square feet of any lot shall be covered by structures or impervious materials.
Impervious materials include asphalt, gravel, concrete, brick, stone, slate or similar material but do not include wood
decking or the water surface of swimming pools.
3. Swales shall not be filled in, piped, or altered except as necessary to provide driveway crossings.
4. Built -upon area in excess of the permitted amount requires a state stormwater management permit modification prior to
construction.
5. All permitted runoff from outparcels or future development shall be directed into the permitted stormwater control
system. These connections to the stormwater control system shall be performed in a manner that maintains the integrity
and performance of the system as permitted.
By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the applicable items required above, that the covenants will be binding on all parties and persons
claiming under them, that they will run with the land, that the required covenants cannot be changed or deleted
without concurrence from the State, and.that they will be recorded prior to the sale of any lot.
V. SUPPLEMENT FORMS
The applicable state stormwater management permit supplement form(s) listed below must be submitted for each
BMP specified for this project. Contact the Stormwater and General Permits Unit at [phone] for the status
and availability of these forms.
Form SWU-102
Wet Detention Basin Supplement
Form SWU-103
Infiltration Basin Supplement
Form SWU-104
Low Density Supplement
Form SWU-105
Curb Outlet System Supplement
Form SWU-106
Off -Site System Supplement
Form SWU-107
Underground Infiltration Trench Supplement
Form SWU-108
Neuse River Basin Supplement
Form SWU-109
Innovative Best Management Practice Supplement
Form SWU-101 Version 3.99 Page 3 of 4

EDWR,RD J ANDERSON - DWQ- 6; brb ttal Application.pdf
L--. _
RECEIVED
DEC 1 6 2005
VI. SUBMITTAL REQUIREMEWIS
Only complete application pa pages will be accepted and reviewed by the Division of Water Quality (DWQ.
A mmpele package includes all of the items listed below. The complete application package should be
submitted to the appropriate DWQ Regional Office.
]'lease indicate that you have provided the following required Information by initialing in the space provided
next to each item,
• Or and one copy of the Stormmater Management Permit Application Form ._
• One ropy of the tppI cabin Supplement l orntis) I each l3Mp _
• Perot it application processing fee of S 120 (payable to NCDENR)
Detailed narrative descnpdon ofstormtsater neatment/management
I wo copies ofplris and specifications, including.
Development/ Project name
Engineer and firm
Legend
- North arow
Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
Location map with named streets or NCSR numbers
- Original contours, proposed contours. spot elevations. finished floor elevations
Details of roads. drainage features, collection systems. and stornovater control measures
Wetlands collocated, or a note on plans that none exist
- Existing drainage (Inclur]Ing off -she), drainage easements. pipe sizes, runoff calculations
- Drainageareas delineated
Ve.getnte.d buffers (where required)
VIL AGENTAUTHORIZATION
If You wish to designtue authority to nnothnr inclivldlial ur firm so tilt they may provide infomtalion Uri your
behalf, please compleat this section.
De_sigmted agent (individual or firnn):_���� �JGOT"T'� Ir_�( �sLl-i-• bi51,�� L�,�
City: GAAY State: _t to . Zip: 2-:1SI I
Phone:.(....a-t..........1..-._-�--I_�l_=_S¢-'.-LI_42._._----- Fax: ( � -1 1 31 9 —
Vlll. APPLICANT-SCERTIFICATION
1,(priul ur ryfx: name ofperson listed in Genmvl (nfmnmdon. item 2) Eddie Anderson
certify that the information Included on this permit application formis, to the best of my knowledge, correct and
that the project will be constructed In conformance with the approved plans, that the required deed rest) icdons
and protective covenants will he recorded, and that the proposed project complies with the requirements of 15A
NCAC 211 .1000.
Signativa:. l � Dote: /2 •J..r-*Jr
T ISWU-lot Version3.99 Pace4of4

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CLH design, p.a.
MacGregor Park, 125 Edinburgh South, SuRE C E I V E D
Cary, North Carolina 27511
Phone: [phone] Fax: [phone]
Email- [e-mail] FEB 10 2006
LETTER OF TRANSMITTAL PROJ#
DWQ
9-Feb-O6
To:
Linda Lewis- Application No. SW8 051217
Company:
NCDENR Water Quality Section
Address:
127 Cardinal Drive
City, State Zip:
Wilmington, NC 28405
Phone:
[phone]
Fax:
[phone]
Method:
Subject:
® Prints
® Reports
UPS Ground
Ogden Elementary School
❑ Originals
❑ Copy of Letter
CLH Project Number: 1217-prmt
❑ Specifications ® Applications
❑ Submittals ❑ Other:
We are sending you the following items:
No of Copies Date
Description
2 sets
3-Feb-06
Affect plans per your comments received 1-25-06-revised
Additional Remarks:
Linda,
Attached is the revised information for your review and approval. We have revised the vegetated filter
per your detail you faxed me on 1-25-06.
Also, Outlet structure D1 has been revised per James lannucci from the New Hanover County
Engineering Department. We needed to lower the pipe for adequate cover. Therefore, we needed to
install a box to lower the pipe. The top of the structure is equal to where the pipe was in the previous
submittals. The infiltration basin has not been effected. The basin operates the same as it did in the
last submittals.
I trust this information is sufficient for your express approval.
Please call me at [phone] if you have any questions.
Thank you,
Signed :2 JA'U��4
RdNP Scott

O
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
FAX COVER SHEET
Date: January 25, 2006 No. of Pages1 1
To: Renee Scott From: Linda Lewis
Company: CLH Design Water Quality Section Stormwater
FAX #: [phone] FAX # [phone]
Phone # [phone]
DWQ Stormwater Project Number: SW8 051217
Project Name: Ogden Elementary School
MESSAGE:
Renee:
I don't understand how a flat slab of concrete flush with the ground will provide any sort of flow
spreading ability. Please revise your vegetated filter detail to look similar to this:
FneRap
I�nrgy 30' * �
D.iss:i.pator
l—fiNr�l I t� We
3 Oil
Piping
Il.ow
Spreader
\ Mecharism
* 50' for SA Class Waters
1l Wicir.h as required to provide
non -erosive flow
PLAN
A
Receiving
Stream
ENB\arl: S:\WQS\STORMWATERWDDINFO\2006\051217-2.jan06
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel-877-623-6748
Wilmington Regional Office Wilmington, INC 28405-3845 FAX [phone] Internet: h2o.encstate.nc.us
An Equal Opportunity/Affirmative Action Employer— 50% Recycled/10°/ Post Consumer Paper
Nne
orthCarolina
Naturally

P. 1
i ' * * * COMMUNICATION RESULT REPORT ( JAN.25.2006 5:28PM ) *
TTI
FILE MODE OPTION ADDRESS (GROUP) RESULT
--------------------------- -----------------------------------------------
377 MEMORY TX 919193197516 OK
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
* *
NCDENR WIRO
PAGE
--------------
P. 1/1
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
Michael F. Easley, Governor
William G, Ross, Jr„ Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P,E, Director
Division of Water Quality
FAX COVER SHEET
Date: January 25, 2006 No. of Pages: 1
To: Renee Scott From: Linda Lewis
Company: CLH Design Water Quality Section Stormwater
FAX #: [phone] FAX # [phone]
Phone # [phone]
DWQ Stormwater Project Number: SW8 051217
Project Name: Ogden Elementary School
MESSAGE:
Renee:
I don't understand how a flat slab of concrete flush with the ground will provide any sort of flow
spreading ability. Please revise your vegetated filter detail to look similar to this: -
R.Ip hap
Energy t 30'
ni ec•I nn rnr. r' !I �

RE: Ogden Elementary SW8 051217 SV � 0(s 1
Subject: RE: Ogden Elementary SW8 051217 �� I ►!
From: 'Renee Scott" <[e-mail]>
Date: Tue, 24 Jan 2006 10:21:54 -0500
To: "'Linda Lewis'" <[e-mail]>
Thanks Linda, we are currently revising our plans per your comments and I
will have 2 sets of the affected plans in your office by tomorrow morning.
-Renee
-----Original Message -----
From; Linda Lewis Imailto:[e-mail]]
Sent: Tuesday, January 24, 2006 9:00 AM
To: Renee Scott
Subject: Ogden Elementary SW8 051217
Renee:
The Division received the previously requested information regarding
this pending Express permit application on January 17, 2006. The
following information is needed to complete the review:
1. The level spreader design should not be raised such that it impedes
the flow. The use of a solid concrete barrier will simply back up the
flow and will provide very little spreading effect. Most likely, the
runoff will simply go around the ends, creating a channelized flow.
Please either revise the currently specified level spreader to add cuts
in barrier or use a different type of level spreader that is buried such
that one edge is level with the upstream side and the downstream edge is
a little lower, such that a spreading effect is created.
2. There is no detail on sheet C7.1 labeled as a vegetated filter detail.
3. Please revise the invert of the 12" CMP on Section B-B for Ponds B2
and C. This invert is currently specified as 28.1, but the bottom
elevation in both of those ponds is above this invert.
Please submit 2 copies of the affected plan sheets.
Linda
1 of 1 1/24/2006 10:42 AM

INFILTRATION BASIN ANALYSIS
FILENAME: S:\WQS\INBASIN\051217.WK1
PROJECT NUMBER: SW8 051217 DATE: 23-Jan-06
PROJECT NAME: Odgen Elementary School
DRAINAGE BASIN: Cape Fear REVIEWER: L. Lewis
RECEIVING STREAM: Howe Creek CLASS: SA ORW
Index No.: If ORW. is site within the 575' AEC? No
SITE AREA: 10.12 acres
IMPERVIOUS AREA CALCULATION
Buildings
Parking & Streets
Concrete & SW
Other/Future
TOTAL
Drainage Area =
% Impervious, 1=
Cc=
Rv=
SHWT Elev.=
Infiltration Rate, In/hr =
Bottom Elevation=
Bottom Surface Area =
Top Elevation =
Top Surface Area =
Design Storm =
Design Volume =
Total Volume Available=
Storage met at elevation=
Storage elev. On plans=
Time to Draw Down =
Place a 1 in this box if Rational is used
Basin B1
Basin B2
Basin C
29955
11470
13820
26010
25540
28525
6355
6820
5605
6130
3080
0
62320 "
49960'
510301. P
... 0
97574
138085
69360
#DIV/0!
63.87%
36.18%
73.57%
#DIV/0!
#DIV/0!
0.70
0.48
0.77
#DIV/0!
#DIV/0!
0.62
0.38
0.71
#DIV/01
26
27
27.4
2.4
2.4
2.4
28
29
29.4
3395
4830
3590
30
31
31
6225
27885
7885
1.5
1.5
1.5
#DIV/0!
7620.84
6483.53
6174.38
#DIV/0!
0
9620
32715
9180
0
#DIV/0!
29.58
29.40
30.48
#DIV/0!
30
30.5
30.5
#DIV/0!
0.08
0.05
0.06
#DIV/0!
C
sf t
sf 0.98
sf 0.95
sf 0.95
sf
sf
fmsl
in/hr
in
cf
cf
ft
fmsl
hrs.
25 YEAR 24 HOUR STORM Intensity, i,= 8 inches / 24 hours =.33 in/hr.
Qr= C i A = #DIV/0! 0.52 0.50 0.41 #DIV/0! cfs
Qp thru bottom of basin= 0.00 679.00 I 966.00 718.00 0.00 cfs
10 YEAR 10 MIN HIGH INTENSITY EVENT Intensity, i, = 7 in/hr
Volume = #DIV/0! I 6607.85 I 6404.78 I 5176.84 I #DIV/0! cfs
COMMENTS
Volume and drawdown are within Design Requirements.

Ogden Elementary SW8 051217
Subject: Ogden Elementary SW8 051217
From: Linda Lewis <[e-mail]>
Date: Tue, 24 Jan 2006 09:00:27 -0500
To: Renee Scott <[e-mail]>
Renee:
The Division received the previously requested information regarding this pending
Express permit application on January 17, 2006. The following information is needed
to complete the review:
1. The level spreader design should not be raised such that it impedes the flow.
The use of a solid concrete barrier will simply back up the flow and will provide
very little spreading effect. Most likely, the runoff will simply go around the
ends, creating a channelized flow. Please either revise the currently specified
level spreader to add cuts in barrier or use a different type of level spreader
that is buried such that one edge is level with the upstream side and the
downstream edge is a little lower, such that a spreading effect is created.
2. There is no detail on sheet C7.1 labeled as a vegetated filter detail.
3. Please revise the invert of the 12" CMP on Section B-B for Ponds B2 and C. This
invert is currently specified as 28.1, but the bottom elevation in both of those
ponds is above this invert.
Please submit 2 copies of the affected plan sheets.
Linda
I of 1 1/24/2006 9:36 AM

CLH design, p.a.
MacCregorFark, 125F,dinhurgh South, Suite 310
Cary, North Carolina 27511
Phone.• [phone] Fax: [phone]
Email clhdesign0dhdesignpa. com
LETTER OF TRANSMITTAL 24-Jan-06
To:
Linda Lewis- Application No. SW8 051217
Company:
NCDENR Water Quality Section
Address:
127 Cardinal Drive
City, State Zip:
Wilmington, NC 28405
Phone:
[phone]
Fax:
[phone]
Method:
Subject:
® Prints
® Reports
UPS Air
Ogden Elementary School
❑ Originals
❑ Copy of Letter
CLH Project Number: 1217-prmt
❑ Specifications ® Applications
❑ Submittals ❑ Other:
We are sending you the following items:
No of Copies Date
Description
2 sets
24-Jan-06
Affect plans per your comments received 1-24-06-revised
1
24-Jan-06
Express review comments responses
0
Additional Remarks:
Linda,
Attached is the revised information for your review and approval of the per your request.
1 trust this information is sufficient for your express approval.
Please call me at [phone] if you have any'questions.
Thank you,
Wetneeje Scott
cc: File
3L9+JLJC @J� V iJD
JAN 2 4 2006
DWQ
nRoi #

CLH design, p.a.
MacGregor Pan(; 1256dinburgh South, Suite 310
Cary, North Carolina 27511
Phone: [phone] Fax: [phone]
24-Jan-06
TO: Division of Water Quality- Linda Lewis
FROM: Renee C. Scott - CLH Design, PA
RE: RESPONSES TO EXPRESS REVIEW COMMENTS
OGDEN ELEMENTARY SCHOOL
STATE APPLICATION NUMBER.: SW8 051217
CC: File (1217/prmt) RE CE T V
Please find attached as follows: JAN 2 4 2006
• Two sets of the revised affected plans. DWQ
�ROJ #
Responses to Division of Water Quality (Linda Lewis)
Comment 1: The level spreader design should not be raised such that it impedes the flow. The use of a
solid concrete barrier will simply back up the flow and will provide very little spreading
effect. Most likely, the runoff will simply go around the ends, creating a channelized flow.
Please either revise the currently specified level spreader to add cuts in barrier or use a
different type of level spreader that is buried such that one edge is level with the upstream
side and the downstream edge is a little lower, such that a spreading effect is created.
Response: The level spreader detail has been revised so that one edge of the level spreader is level with
the upstream side and the downstream edge is a little lower creating a spreading effect for the
water. See sheets C7.5, C7.6 and C7.7 for the revised level spreader details.
Comment 2: There is no detail on sheet C7.1 labeled as a vegetated filter detail.
Response: Vegetated filter details are now shown on each infiltration basin sheet, which are sheet C7.5,
C7.6 and C7.7. The vegetated filter detail still refers to sheet C7.1 for the temporary liner.
Comment 3: Please revise the invert of the 12" CMP on Section B-B for Ponds B2 and C. This invert is
currently specified as 28.1, but the bottom elevation in both of those ponds is above this
invert.
Response: Section B-B for pond B2's invert has been revised to reflect and invert of 29.1'. Section B-B
for pond C's invert has been revised to reflect and invert of 29.5'.
End of Comment Responses
I trust this information is sufficient for your review and approval. Thank you for all of your help and please call
with any questions.
Thank you,
Renee C. Scott
apmss Rcvi Rup o-2.da

CLH design, p.a.
MacGregor Park, 125Edinburgh South, Suite 310
Cary, North Carolina 27511
,Phone: [phone] Eaw [phone]
Email [e-mail]
LETTER OF TRANSMITTAL 16-Jan-06
To:
Linda Lewis- Application No. SW8 051217
Company:
NCDENR Water Quality Section
Address:
127 Cardinal Drive
City, State Zip:
Wilmington, NC 28405
Phone:
[phone]
Fax:
[phone]
Method: UPS Air
Subject: Ogden Elementary School CLH Project Number: 1217-prmt
®
®
Prints
Reports
❑ Originals
❑ Copy of Letter
❑ Specifications ® Applications
❑ Submittals ❑ Other:
We are sending you the following items:
No of Copies Date
Description
•
2
16-Jan-06
Original Stormwater permit applications
•
1
16-Jan-06
Original of each Infiltration Basin Supplement (3 basins)
•
2
16-Jan-06
Calculations / Narrative
•
2
16-Jan-06
Plans
•
1
16-Jan-06
Infiltration Site Visit results and Soil Evaluation
•
1
16-Jan-06
Wetlands Delineation Map signed by the USACOE
• 1
USACOE
16-Jan-06
Notification of Jurisdictional Determination signed by
•
1
16-Jan-06
Express Review comment responses
Additional Remarks
Linda,
Attached is the revised information for your review and approval of the above mentioned project. Please
substitute the attached stormwater permit applications and Infiltration Basin Supplement sheets with the
originals I sent you on January 3, 2006 so that you will have an original copy of the owners signatures
for the forms, as these sheets have not changed.
RECEIVED
trust this information is sufficient for your express review.
JAN 1 7 2006
Please call me at [phone] if you have any questions.
Thank you,
Signed
Renee Yco4tt
cc: File

CLH design, p.a.
MacGregor Park, 125 Edinburgh South, Suite 310
Cary, NotYh Carolina 27511
Phone: [phone] Fax: [phone]
16-Jan-06
TO: Linda Lewis- Division of Water Quality -Application No. SW8 051217
FROM: Renee Scott
RE: EXPRESS REVIEW
OGDEN ELEMENTARY SCHOOL
CC: File (1217-prmt)
Dear Ms. Lewis,
On November 11, 2005 Engineer Consulting Services, LTD. (ECS) Conducted an infiltration evaluation
on site at our proposed infiltration basin locations and determined the seasonal High Water table, the
results are attached. On December 13, 2005, Soil and Water Conservation, Vincent Lewis, scheduled a
meeting on site to review the results determined by Engineering Consulting Services, LTD. (ECS). What
he had found was that the seasonal high water table elevations were significantly lower than when
originally tested by ECS. Attached is a sketch done by Vincent Lewis showing the depths at the
proposed locations.
For the proposed infiltration basins we've utilized the seasonal high water table elevations determined by
Vincent Lewis, Soil and Water Conservation.
Please let us know if you should have any questions.
Sincerely,
Renee Scott
IRTLECEI tl ED
JAN 17 2006
DWQ
'ROJ #
mrd"W. cam, Uuda

AQ
IWlNG NO.

U.S. ARMY CORPS OF ENGINEERS
RECEIVED
WILMINGTON DISTRICT JAN 1 1 2006
Action Id. 200600333 County: New Hanover U.S.G.S. Quad: Scotts Hill
NOTIFICATION OF JURISDICTIONAL DETERMINATION
Property Owner/Agent: New Hanover County Board of Education 'RECEIVE D
Address: 6410 Carolina Beach Road '
Wilmington, NC 28412
Telephone No.: 910-2544282
JAN 17 2006
DWQ
Property description: �ROJ #
Size (acres) appx. 10 Nearest Town Wilmington
Nearest Waterway UT to Howe Creek River Basin Atlantic Intracoastal Waterway
USGS HUC 03030001 Coordinates N 34.2661 W 77.8099
Location description This tract is located at 3637 Middle Sound Loop Road, in wetlands adjacent to an unnamed
tributary to Howe Creek, northeast of Wilinint1ton, North Carolina
Indicate Which of the Following Apply:
_ Based on preliminary information, there may be wetlands on the above described property. We strongly suggest you have
this property inspected to determine the extent of Department of the Army (DA) jurisdiction. To be considered final, a
jurisdictional determination must be verified by the Corps. This preliminary determination is not an appealable action
under the Regulatory Program Administrative Appeal Process ( Reference 33 CFR Part 331).
There are Navigable Waters of the United States within the above described property subject to the permit requirements of
Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act. Unless there is a change in the law or
our published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
X There are wetlands on the above described property subject to the permit requirements of Section 404 of the Clean Water
Act (CWA)(33 USC § 1344). Unless there is a change in the law or our published regulations, this determination may be
relied upon for a period not to exceed five years from the date of this notification.
We strongly suggest you have the wetlands on your property delineated. Due to the size of your property and/or our
present workload, the Corps may not be able to accomplish this wetland delineation in a timely manner. Fora more timely
delineation, you may wish to obtain a consultant. To be considered final, any delineation must be verified by the Corps.
The wetland on your property have been delineated and the delineation has been verified by the Corps. We strongly
suggest you have this delineation surveyed. Upon completion, this survey should be reviewed and verified by the Corps.
Once verified, this survey will provide an accurate depiction of all areas subject to CWA jurisdiction on your property
which, provided there is no change in the law or our published regulations, may be relied upon for a period hot to exceed
five years.
X The wetlands have been delineated and surveyed and are accurately depicted on the plat signed by the Corps
Regulatory Official identified below on 1/5/2006. Unless there is a change in the law or our published regulations, this
determination may be relied upon for a period not to exceed five years from the date of this notification.
There are no waters of the U.S., to include wetlands, present on the above described property which are subject to the
permit requirements of Section 404 of the Clean Water Act (33 USC 1344). Unless there is a change in the law or our
published regulations, this determination may be relied upon for a period not to exceed five years from the date of this
notification.
X The property is located in one of the 20 Coastal Counties subject to regulation under the Coastal Area Management Act
(CAMA). You should contact the Division of Coastal Management in Wilmington, NC, at [phone] to determine
their requirements.
Page 1 of 2

Action ID: •200400333
Placement of dredged or fill material within waters of the US and/or wetlands without a Department of the Army permit may
constitute a violation of Section 301 of the Clean Water Act (33 USC § 1311). If you have any questions regarding this
determination and/or the Corps regulatory program, please contact Jennifer Frye at 910-251-4923.
Basis For Determination: This site exhibits wetland criteria as described in the 1987 Corps Wetland Delineation Manual
and is adiacent to an unnamed tributary to Howe Creek a tributary to the Atlantic Intracoastal Waterway, a Navi able
Water of the U.S. This determination is based on information submitted by LMG Inc and a site visit by Jennifer Frye
on 1/4/2006.
Remarks: copy furnished;
Noelle Lutheran, DENR-DWO WiRO 127 Cardinal Drive Ext., Wilmington NC 28405
Corps Regulatory Official:
Date 01/05/2006 Expiration Date 01/05/2011
FOR OFFICE USE ONLY:
• A plat or sketch of the property and the wetland data form must be attached to the file copy of this form.
• A copy of the "Notification Of Administrative Appeal Options And Process And Request For Appeal' form must be
transmitted with the property owner/agent copy of this form.
• If the property contains isolated wetlands/waters, please indicate in "Remarks" section and attach the
"Isolated Determination Information Sheet" to the file copyof this form.
Page 2 of 2

kPi "j a �i y'
CnnLJSffE WORK
OGDEN ELEMENTARY SCHOOL
3637 MIDDLE SOUND LOOP ROAD
NEw HANOVER COUNTY, NC
JANUARY,2006
,,,,,,,,,,,�,,,,,,,,
RECEIVED
�,�.•�FESSIpy9
JAN 17 2006
$Lv�O zr2 z
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JUKIL
MacGregor Park, 125 Edinburgh South, Suite 310
Cary, North Carolina 27511
Phone: [phone] Fax: [phone]

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EROSION AND SEDIMENT CONTROL PLAN
OGDEN ELEMENTARY SCHOOL
3637 MIDDLE SOUND LOOP ROAD
NEw HANOVER, NORTH CAROUNA
JANUARY,2006
PROJECT DESCRIPTION:
The site is located on Middle Sound Loop Road approximately one half mile east of NC Highway 17.
There is an existing elementary school with multiple classroom buildings and site infrastructure. A
new elementary school building is proposed to replace the existing buildings currently on site. The
site work will include new bus and parent loops and new driveway access. Some of the current school
buildings remain occupied and the school will remain operational during the project. The erosion
control devices will be installed and maintained to allow proper phasing of site construction.
The project is located within the Howe Creek watershed which is designated as SA waters. Wetlands
encroach on site and are indicated on the plans. No streams are shown on USGS Quad maps or soil
survey mapping. No wetlands are impacted by this project. Stormwater infiltration basins are
proposed and will be reviewed by NCDENR DWQ and New Hanover County.
Construction is scheduled to begin in February 2006 and continue until August, 2007. Approximately
9 acres of the land will be disturbed during construction.
PLANNED EROSION AND SEDIMENT CONTROL PRACTICES:
I . Silt Fence: Silt fence will be utilized to filter sediment laden runoff in locations where the
drainage area is less than '/a acre per 100-11 of fence.
2. Tree Protection Fencing: Tree protection fencing will be installed to protect existing trees which
are intended to remain. In some locations, silt fence will serve as tree protection fence.
3. Inlet Protection: Block and gravel inlet protection devices will be installed at new inlets as they
are constructed to filter sediment laden runoff prior to the runoff entering the storm drainage
system.
4. Sediment Traps and Basins: Sediment traps and basins will be installed to filter concentrated
sediment laden runoff prior to discharge from the site.
5. Temporary Diversions: Temporary diversions will be constructed to divert runoff to the sediment
traps.
6. Construction Entrance: Temporary gravel construction entrances will be utilized to minimize soil
being tracked off the site by construction traffic.
7. Channel & Slope Protection Matting: Straw or excelsior matting will be installed in permanent
channels, swales and steep slopes to stabilize the seedbed and promote vegetative growth.

8. Outlet Protection: Riprap outlet protection aprons will be installed at outlets as they are
constructed to slow stormwater velocities and dissipate energy to protect downstream channels
from erosion.
Refer to drawings C4.1 & C4.2 for Construction Sequence and Maintenance Plan.

Stormwater Management Narrative
Ogden Elementary School
January, 2006
The site is located on Middle Sound Loop Road approximately one half mile east of NC Highway 17.
There is an existing elementary school with multiple classroom buildings and site infrastructure. A new
elementary school building is proposed to replace the existing buildings currently on site. The site work
will include new bus and parent loops and new driveway access. Some of the current school buildings
remain occupied and the school will remain operational during the project.
The project is located within the Howe Creek watershed which is designated as SA waters. Wetlands
encroach on site and are indicated on the plans. No streams are shown on USGS Quad maps or soil
survey mapping. No wetlands are impacted by this project.
The proposed site impervious area (which is 41.7% of the site) will require the site to meet High Density
requirements. Due to the location of the project within areas in SA waters, the stormwater shall be
treated in infiltration basins. The stormwater infiltration basins will be reviewed by NCDENR DWQ and
New Hanover County. The basins provide both stormwater treatment and detention.
Stormwater Treatment Requirements
The infiltration basins will treat the first 1.5 inches of runoff. Due to the shallow Seasonal High Water
Table, some fill will be required to meet the 2 foot minimum infiltration layer. The soils provide
infiltration rates of 2.4 in/hr (see attached soils infiltration evaluation by ECS). Pre-treatment of
stormwater prior to entering infiltration basin will be provided by sand filters and sediment basins.
Pre / Post Development Runoff
The temporary storage capacity of the infiltration basins and pre-treatment devices will be utilized to
provide detention volume required to reduce the post -development runoff from the site to a peak rate less
than the pre -development rate for the 2-yr, 10-yr and 25-yr 24-hr storm event.
Detention hydrographs and pond routing calculated with Hydraflow Hydrographs 2002 version 7.0 by
Intelisolve software.
Pre / Post Development Runoff Summary
Drainage Basin Area A
Description: Southern portion of the site draining to the southern corner of the property adjacent to the
Brandywine subdivision. Run-off enters wetland prior to leaving the property. No additional off -site
drainage enters Area `A'.
Summary
Pre -Development
Post -Development
With Detention
DA (ac)
2.80
0.59
CN
53.8
38.0
Te (min)
5.0
5.0
Peak Q2 (cfs)
1.6
0.5
N/A
Peak Q10 (cfs)
6.3
0.2
N/A
Peak Q25 (cfs)
8.8
0.01
N/A
No detention necessary for Drainage Basin Area A.

Drainage Basin Area B
Description: Western portion of the site draining to the western property line. Run-off enters wetland
prior to leaving the property. No additional off -site drainage enters Area `B'.
Summary
Pre -Development
Post -Development
With Detention
DA (ac)
3.23
6.97
CN
58.1
64.0
Tc (min)
5.0
5.0
Peak Q2 (cfs)
2.9
9.9
0.7
Peak Q10 (cfs)
9.2
25.2
5.6
Peak Q25 (cfs)
12.2
32.3
8.9
Detention is provided by Infiltration Basins `BI' and `132'.
Drainage Basin Area C
Description: Eastern portion of the site draining to the right-of-way of Middle Sound Loop Road. No
additional off -site drainage enters Area `C'.
Summary
Pre -Development
Post -Development
With Detention
DA (ac)
4.09
2.56
CN
47.3
67.9
Te (min)
5.0
5.0
Peak Q2 (cfs)
0.7
4.6
0.5
Peak Q 10 (cfs)
5.8
10.6
5.4
Peak Q25 (cfs)
8.8
13.3
8.5
Detention is provided by Infiltration Basin `C'.
Total Site
Summary
Pre -Development Post -Development With Detention
Q2 (cfs) 5.2 14.4 1.1
Q10 (cfs) 21.3 36.0 11.1
Q25(cfs) 29.7 46.1 17.9

STORMWATER MANAGEMENT"

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Ogden
Elementary
School
Replacement
Project # 820-9113
3637 Middle Sound Row
STORMWATER
MANAGEMENT
POST -DEVELOPMENT
Y {a

/NFxTRAT/ON BASIN B I & BZ

STnS'IS OLDEN CLEMEN TA•RYSCHOOL
Site Area =
2.24 ac Tc
= 5.00 min
Qa25 = 14.24 cfs
Wt. CN =
76.7
Qa10 = 11.74 cfs
Site Soils:
Scagate/Murville
(Hydrologic Soil Group A) Qa2 = 5.94 cfs
12=
5.87 in/hr
]10=
7.24 in/hr
125=
8.15 in/hr
Wooded Area:
0.00 ac CN=
36
Impervious Area:
1.43 ac CN=
98
Lawn Area:
0.81 ac CN=
39
Weighted C:
76.7
Site Area =
3.17 ac Te
=
5.00 min
Qa25 = 15.59 cfs
Wt. CN =
66.0
Qa10 = 12.29 cfs
Site Soils: Seagate/Murville
(Hydrologic Soil Group A) Qa2 = 5.08 efs
12=
5.87 in/hr
110=
724 in/hr
125=
8.15 in/hr
Wooded Area:
0.00 ac
CN=
36
Impervious Area:
1.15 ac
CN=
98
Lawn Area:
1.72 ac
CN=
39
Future Impervious Area:
0.30 ac
CN=
98
Weighted C: 66.0
Site Area =
1.56 ac Te
=
5.00 min
Qa25 =
2.13 cfs
Wt. CN =
41.9
QaIO =
1.21 cfs
Site Soils:
Seagate/Murville
(Hydrologic Soil Group A) Qa2 =
0.07 cfs
12=
5.87 in/hr
I10=
7.24 in/hr
125=
8.15 in/hr
Wooded Area:
0.83 ac
CN=
36
Impervious Area:
0.12 ac
CN=
98
Lawn Area:
Q61 ac
CN=
39
Weighted C: 41.9
98 0003t.I¢tl217 N. Pose A -"I. Xra Pnm.d: 111.006 3 n Pm Page 1 of 1

DATE
1/11/06 G a
=CT NAME PROJECT NO
m Elementary School 1217 c� r°r r/jjjJJJ
TION BY
Hanover County KAL
Drainage Area, (DA) =
2.24 ac
Impervious Area (c=0.95) =
1.43 ac
Pervious Area (c=0.35) =
0.81 ac
Cc =
0.73
% Impervious = 64 %
Soil Infiltration Rate = 0.50 in/hr
Design Storm Rainfall 1.50 in (Typically 1-in)
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.62 in/in
Required Volume (design rainfall)(Rv)(DA) = 7,618 cf
Proposed depth of infiltration device: 2.00 ft
Surface Area: 3,809 sf
% of required volume requiring pretreatment = 50 %
Volume of pretreatment device= 3,809 cf
s]1319`0001k IW1217-PondSIZe.Pone BIALS Pnntee'. 1116n" 4.13 PM Page 1 of 1

M W& VO \ D DATE
_gy1/10/06
mmNAME PROJECT NO a //
Elementary School 1217 _ ra
TION BY f
Hanover County KAL UU
Drainage Area, (DA) =
3.17 ac
Impervious Area (c=0.95) =
1.45 ac
Pervious Area (c=0.35) =
1.72 ac
Cc =
0.62
% Impervious = 46 %
Soil Infiltration Rate = 0.50 in/hr
Design Storm Rainfall 1.50 in (Typically 1-in)
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.46 in/in
Required Volume (design rainfall)(Rv)(DA) = 7,969 cf
Proposed depth of infiltration device: 1.50 ft
Surface Area: 5,313 sf
% of required volume requiring pretreatment = 50 %
Volume of pretreatment device= 3,964 cf
s-.\1310t00011 IW1217-Pond&ze.Pond 92.XLS pnnteo: 1/16/20064:14 PM - Page 1 0f 1

Reservoir Report
Page 1
Reservoir No. 2 - POND B1 Hydraflow Hydrographs by Intelisolve
Pond Data
Pond storage is based on known contour areas. Average end area method used.
Stage / Storage Table
Stage (ft)
Elevation (ft)
Contour area (sgft)
Incr. Storage (cuft)
Total storage (cuft)
0.00
28.00
3,395
0
0
1.00
29.00
5,245
4,320
4,320
2.00
30.00
6,225
5,735
10,055
3.00
31.00
16,140
11,183
21,238
4.00
32.00
35,315
25,728
46,965
Culvert / Orifice Structures
Weir Structures
[A]
[B]
ICI
[D]
[A]
[B]
[C]
[D]
Rise In
= 0.0
0.0
0.0
0.0
Crest Len ft = 0.00
6.00
0.00
0.00
Span in
= 0.0
0.0
0.0
0.0
Crest El. ft = 0.00
30.00
0.00
0.00
No. Barrels
= 0
0
0
0
Weir Coeff. = 0.00
2.60
0.00
0.00
Invert El. ft
= 0.00
0.00
0.00
0.00
Weir Type = -
Broad
-
-
Length It
= 0.0
0.0
0.0
0.0
Multi -Stage = No
No
No
No
Slope %
= 0.00
0.00
0.00
0.00
N-Value
= .doo
.000
.000
.000
Orif. Coeff.
= 0.00
0.00
0.00
0.00
Multistage
= n/a
No
No
No
Exfiltration Rate = 0.52 in/hr/sgft
Tailwater Elev. = 0.00 it
Stage / Storage / Discharge Table
Stage
Storage
Elevation Clv A
ft
cuft
ft cfs
0.00
0
28.00 -
1.00
4,320
29.00 --
2.00
10,055
30.00 -
3.00
21,238
31.00 --
4.00
46,965
32.00 ---
Note: All outflows have been analyzed under inlet and outlet control.
Clv B CIv C CIv D Wr A Wr B Wr C
Wr D Exfl
Total
cfs cfs cfs cfs cfs cis
cfs cfs
cfs
- - - - 0.00 -
- 0.000
0.00
--- -- --- -- 0.00 --
- 0.216
0.06
- - - - 0.00 -
- 0.336
0.07
-- - --- --- 15.60 --
-- 0.975
15.79
--- -- -- -- 44.12 --
- 0.000
44.55

Reservoir Report
Page 1
Reservoir No. 3 - POND B2
Hydraflow Hydrographs by Intelisolve
Pond Data
Pond storage is based on known contour areas. Average end area method
used.
Stage / Storage Table
Stage (ft) Elevation (ft)
Contour area (sgft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 29.00
4,830
0
0
1.00 30.00
17,910
11,370
11,370
2.00 31.00
27,885
22,898
34,268
3.00 32.00
81,000
54,443
88,710
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[D]
[A]
[B]
[C]
[D]
Rise in
= 15.0
0.0
0.0
0.0
Crest Len ft = 0.00
0.00
0.00
0.00
Span in
= 15.0
0.0
0.0
0.0
Crest El. ft = 0.00
0.00
0.00
0.00
No. Barrels
= 1
0
0
0
Weir Coeff. = 3.33
0.00
0.00
0.00
Invert El. It
= 30.50
0.00
0.00
0.00
Weir Type = --
-
---
--
Length ft
= 84.0
0.0
0.0
0.0
Multi -Stage = No
No
No
No
Slope %
= 4.07
0.00
0.00
0.00
N-Value
= .013
.013
.000
.000
Orif. Coeff.
= 0.60
0.60
0.00
0.00
Multi -Stage
= n/a
No
No
No
Exfiltration Rate = 0.52 in/hr/sgft
Tailwater
Elev. = 0.00 ft
Stage / Storage / Discharge Table
Stage
Storage
Elevation
Clv A
ft
cult
ft
cfs
0.00
0
29.00
0.00
1.00
11,370
30.00
0.00
2.00
34,268
31.00
1.10
3.00
88,710
32.00
5.53
Note: All outflows have been analyzed under inlet and outlet control.
Clv B Clv C Clv D Wr A Wr B Wr C Wr D Exfil Total
cfs cfs cfs cfs cfs cfs cfs cfs cfs
-- - -- - - --- --- 0.216 0.22
-- -- -- -- - - -- 0.336 1.44
-- - --- -- - --- --- 0.975 6.50

INF/LTRAT/ON BAsw C

AREAC 1'ORTJO:N OF SHIT ENTERING POND
Site Area =
1.59 ac Tc
Wt. CN =
82.4
Site Soils:
Seagate/Murville
12=
5.87 in/hr
110=
7.24 inner
125=
8.15 in/hr
Wooded Area:
Impervious Area:
Lawn Area:
Weighted C:
Site Area =
0.97 ac Tc
Wt. CN =
44.2
Site Soils:
Seagate/Murville
12=
5.87 in/hr
110=
7.24 in/hr
125=
8.15 in/hr
Wooded Area:
Impervious Area:
Lawn Area:
Weighted Ct
= 5.00 min
Qa25 = 11.19 cfs
Qa10 = 9.39 cfs
(Hydrologic Soil Group A) Qa2 = 5.15 cfs
0.00 ac CN=
36
1.17 ac CN=
98
0.42 ac CN=
39
82.4
=
5.00 min
Qa25 =
1.65 cfs
Qa10 =
1.02 cfs
(Hydrologic Soil
Group A) Qa2 =
0.09 cfs
0.10 ac
CN=
36
0.09 ac
CN=
98
0.78 ac
CN=
39
44.2
980003b.Wl217-Pre Masi ,nS a ": 11MO 61m.JI PM Page 1 of 1

NAME
School
Hanover
Drainage Area, (DA) =
Impervious Area (c=0.95) _
Pervious Area (c=0.35) _
Cc=
% Impervious =
Soil Infiltration Rate =
Design Storm Rainfall
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) _
Required Volume (design rainfall)(Rv)(DA) =
Proposed depth of infiltration device:
Surface Area:
% of required volume requiring pretreatment =
Volume of pretreatment device=
110110/05
1217
\ref
1.59 ac
1.17 ac
0.42 ac
0.79
74 %
0.50 in/hr
1.50 in
0.71 in/in
6.166 cf
1.60 ft
3,854 sf
50 %
3,083 cf
(Typically 1-in)
5:11319W00110 11 %1217-PandSae-Pond CALS pnnteE: 1/1WO064:19PM Page 1 of 1

Reservoir Report
Page 1
H dr flow H dro ra h b I t Ii Iv
R : N Y a y g p s y neso e
eservolr o. 4 -POND C
Pond Data
Pond storage is based on known contour areas. Average
end area method
used.
Stage I Storage Table
Stage (ft) Elevation (ft)
Contour area (sgft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 29.40
3,590
0
0
0.60 30.00
4,050
2,292
2,292
1.00 30.40
6,785
2,167
4,459
1.60 31.00
7,885
4,401
8,860
2.60 32.00
16,760
12,323
21,183
Culvert / Orifice Structures Weir Structures
[A]
[B]
[C]
[D]
[A]
[B]
[C]
[D]
Rise in
= 0.0
0.0
0.0
0.0
Crest Len ft
= 0.00
8.00
6.00
0.00
Span in
= 0.0
0.0
0.0
0.0
Crest El. ft
= 0.00
31.00
31.00
0.00
No. Barrels
= 0
0
0
0
Weir Coeff.
= 0.00
2.60
2.60
0.00
Invert El. ft
= 0.00
0.00
0.00
0.00
Weir Type
= --
Broad
Broad
---
Length ft
= 0.0
0.0
0.0
0.0
Multi -Stage
= No
No
No
No
Slope %
= 0.00
0.00
0.00
0.00
N-Value
= .000
.000
.000
.000
Orif. Coeff.
= 0.00
0.00
0.00
0.00
Multi -Stage
= n/a
No
No
No
Exfiltratlon Rate
= 0.52 in/hr/sgft
TaiWater Elev.
= 0.00 ft
Note: All outflows have been enahy ed
under inlet and outlet control.
Stage / Storage / Discharge Table
Stage
Storage Elevation
Clv A
Clv B Clv C
Clv D Wr A
Wr B
Wr C
Wr D
Exfil
Total
ft
cuft ft
cfs
cfs cfs
cfs cfs
cfs
cfs
cis
cfs
cfs
0.00
0 29.40
---
-- -
-- --
0.00
0.00
-
0.000
0.00
0.60
2,292 30.00
---
-- ---
--- ---
0.00
0.00
--
0.216
0.05
1.00
4,459 30.40
--
- -
- --
0.00
0.00
---
0.336
0.08
1.60
8,860 31.00
--
-- --
- -
0.00
0.00
-
0.975
0.09
2.60
21,183 32.00
---
--- ---
--- -
20.80
15.60
--
0.000
36.60

CLH design, p.a.
MacGregor Park, 129 Edinburgh South, Suite 310
Cary, North Carolina 27911
Phone: [phone] Fax. [phone]
16-Jan-06
TO:
Division of Water Quality- Linda Lewis
FROM:
Renee C. Scott - CLH Design, PA
RE:
RESPONSES TO EXPRESS REVIEW COMMENTS
OGDEN ELEMENTARY SCHOOL
STATE APPLICATION NUMBER.: SW8 051217
CC:
File (1217/prmt)
Please find attached as follows:
• Two sets of revised plans.
• Two copies of revised calculations.
• Two copies of Stormwater Permit Application (please take original signed permit
application sheet from original submittal).
• One copy of Infiltration Basin Supplements for each basin (3 basins total, please take
original signed supplement from original submittal).
• One copy of Site visit results and soil evaluation, performed by Vincent Lewis and ECS
Ltd.
• One copy of Wetlands delineation map signed by USACOE.
Responses to Division of Water Quality (Linda Lewis)
Comment 1: The application represents the post -development condition only. Please remove all numbers
that are for the pre -development condition, as they are not relevant.
Response: All numbers that correspond with the pre -development condition have been removed, only the
post -development conditions are shown.
Comment 2: The drainage areas and built -upon areas reported on the application do not match up with the
drainage areas and builit-upon areas used in the calculations.
Response: Drainage areas and built -upon areas have been revised to reflect the same numbers on the
application and the calculations.
Comment 3: If Basins BI and B2 are separate basins, and have their own drainage areas, and do not act
as one basin, i.e., they do not rise and fall together, then please provide a separate column in
the application for each basin.
Response: Application has been revised accordingly.
ExpR,' Rcvkw Rcy..,s .Ld.

Ogden Elementary School
16-Jan-06
Page 2
Comment 4: 1f Basins BI and B2 are separate basins, please delineate their separate drainage areas on
the post -development drainage area plan.
Response: Acknowledged. Plan has been revised to reflect separate drainage areas.
Comment 5: As discussed at our meeting, infiltration systems must be offline, that is, they must bypass the
excess design storm to a 50' vegetated filter prior to entering the basin. The use of flumes
rather than catch basins and piping will complicate the design of a bypass mechanism. Please
see the attached drawings which were used in the 1997 stormwater workshops to illustrate the
bypass mechanism.
Response: Vegetated filter is now provided. Infiltration systems are now offline. See grading plan sheet
C3.1 and the corresponding detail sheets, C7.1, C7.5, C7.6 and C7.7. Also, see detail sheet
C7.1 for the channel design for the vegetated filter.
Comment 6: Please add the nearest intersection of two major roads to the vicinity map. A major road is
any 1, 2 or 3 digit NC, US or interstate highway.
Response: Vicinity map has been revised to reflect the nearest intersection of two major roads, see sheet
CIA.
Comment 7: Please provide and show a 50' vegetated filter on the plan for the excess design storm
overflows from each basin. Additionally, please provide a vegetated filter detail on the plans,
showing the widths, lengths grading spot elevations, slopes and flow spreader mechanism.
Response: Vegetated filter is now provided. See grading plan sheet C3.1 and the corresponding detail
sheets, C7. I, C7.5, C7.6 and C7.7. Also, see detail sheet C7.1 for the channel design for the
vegetated filter.
End of Comment Responses
I trust this information is sufficient for your review and approval. Thank you for all of your help and please call
with any questions.
Thank you,
Renee C. Scott
&p, Review Rup nu- Ldo

Jan.13. 2006 9:16AM
CLH DESIGN
No. 3201
CLH design, p.a.
MacGregor Perk, 125 Mil zbwgh South, Suite 310
Cary, North Csrofma 27511
Phone: [phone] Fsx. [phone]
1-13-06
TO:
Linda Lewis- Division of Water Quality
Fax:[phone]
FROM:
Renee Scott
RE:
REQUEST FOR TIME EXTENTION
OGDEN ELEMENTARY SCHOOL-
STORMWATER APPLICATION NO, SW8 051217
CC:
File (1217-prmt)
Dear Linda,
Per my email yesterday, we request a time extention until Jamtary 17, 2006 to submit you the required
information per your comments from express review received January 3, 2006,
please let us know if this is acceptable.
Thank you,
Renee C. Scott
wawonce.a.�MM

�QF W ATF" 0 Michael F. Easley, Governor
�O G William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
CO
0 Alan W. Klimek, P.E. Director
Division of Water Quality
January 3, 2006
Mr. Eddie Anderson, Director of Facilities
New Hanover County Schools
6410 Carolina Beach Road
Wilmington, NC 28412
Subject: Request for Additional Information
Stormwater Project No. SW8 051217
Ogden Elementary School
New Hanover County
Dear Mr. Anderson:
The Wilmington Regional Office received a Stormwater Management Permit Application for
Ogden Elementary School on December 29, 2005, with a scheduled Express review date of
January 3, 2006. A preliminary review of that information has determined that the application
is not complete. The following information is needed to continue the stormwater review:
1. The application represents the post -development condition only. Please remove
all numbers that are for the pre -development condition, as they are not relevant.
2. The drainage areas and built -upon areas reported on the application do not
match up with the drainage areas and built -upon areas used in the calculations.
3. If Basins B1 and B2 are separate basins, and have their own drainage areas,
and do not act as one basin, i.e., they do not rise and fall together, then please
provide a separate column on the application for each basin.
4. If Basins B1 and B2 are separate basins, please delineate their separate
drainage areas on the post -development drainage area plan.
As discussed at our meeting, infiltration systems must be offline, that is, they
must bypass the excess design storm to a 50' vegetated filter prior to entering
the basin. The use of flumes rather than catch basins and piping will complicate
the design of a bypass mechanism. Please see the attached drawings which
were used in the 1997 stormwater workshops to illustrate the bypass
mechanism.
6. Please add the nearest intersection of two major roads to the vicinity map. A
major road is any 1, 2 or 3 digit NC, US or interstate highway.
7. Please provide and show a 50' vegetated filter on the plan for the excess design
storm overflows from each basin. Additionally, please provide a vegetated filter
detail on the plans, showing the widths, lengths, grading, spot elevations, slopes,
and flow spreader mechanism.
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Servicel.877-623-6748
Wilmington Regional Office Wilmington, NC 28405-3845 FAX [phone] Internet: h2o.enr.state.nc.us One
NOrttICdCO/I/I II$
An Equal Opportunity/Affirmative Action Employer — 50 % Recycledl10% Post Consumer Paper Naturally

Mr. Anderson
January 3, 2006
Stormwater Application No. SW8 051217
Please note that this request for additional information is in response to a preliminary
review. Two copies of the revised information should be received in this Office prior to
January 17, 2006, or the application will be returned as incomplete. The return of a
project will necessitate resubmittal of all required items, including the application fee.
If you need additional time to submit the information, please mail or fax your request for
a time extension to the Division at the address and fax number at the bottom of this
letter. The request must indicate the date by which you expect to submit the required
information.. The Division is allowed 90 days from the receipt of a completed
application to issue the permit.
The construction of any impervious surfaces, other than a construction entrance under
an approved Sedimentation Erosion Control Plan, is a violation of NCGS 143-215.1 and
is subject to enforcement action pursuant to NCGS 143-215.6A.
Please reference the State assigned project number on all correspondence. Any
original documents that need to be revised have been sent to the engineer or agent. All
original documents must be returned or new originals must be provided. Copies are not
acceptable. If you have any questions concerning this matter please feel free to call me
at [phone].
Sincerely,
Gl� �C,L,c.cy
Linda Lewis
Environmental Engineer
ENB/arl: S:\WQS\STORMWATER\ADDINFO\2006\051217.jan06
cc: Renee Scott, CLH Design
Ken Loring, PE, CLH Design
Linda Lewis
Page 2 of 2

State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor
William G. Ross Jr., Secretary
FAX COVER SHEET
Date: I-3 2vv(.o
To: 62x, �c¢lee SCa%f
CO: CLH sl'�h
FAX #: 9P - 314 - 751(o
REMARKS:
No. Of Pages: (excluding cover)
From: Loch Lewis
CO: NC DENR
FAX#: [phone]
0o/i' Ab'Ia/ 117 0/ b' t
127 Cardinal Drive Extension, Wilmington, N.C. '28405-3845 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer

* * * COMMUNICATION RESULT REPORT ( JAN. 3.2006
FILE MODE OPTION ADDRESS (GROUP)
---------------
896 MEMORY TX
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
9-19193197516
P. 1
1:57PM )
TTI NCDENR WIRO
,RESU TT --------PAGE--
OK 1 P. 3/3
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor
William G. Ross Jr., Secretary
FAX COVER SHEET
Su y6sl zt?�
Date: 1— 3-2CX>(o
To: 1Ce� 4ee 3Coff
CO: CLH fJ 5(' h
FAX #: 9 la - 31 - 751(0
REMARKS:
No. Of Pages: (excluding cover) 2
From:_L766 L2Lui5
CO: NC DENR
FAX#: [phone]
1/7 nOl)bl
127 Cordlnal Drive Extension, Wilmington, N.C. 28405.3845 Telephone [phone]$15 Fax [phone]
An Equol Opportunity Afflrmotive Action Employer

, S .
LA
N F.
CLH desk, In. -�
MacGregor Park, 125 Edinburgh South, SteJC�6+0LJ V E I V E D
Caty, North Carolina 27511
Fhone. [phone] Fax: [phone] DEC 2 9 2005
Email.• clhdesigii aelhdesignpa.conr
LETTER OF TRANSMITTAL
To:
Cameron Weaver
Company: NCDENR Water Quality Section
Address: 127 Cardinal Drive
City, State Zip: Wilmington, NC 28405
Phone: [phone]
Fax: [phone]
Method: UPS Ground
DWQ
PROJ # 92-Dec-05
Subject: Ogden Elementary School CLH Project Number: 1217-prmt
®
®
Prints
Reports
❑ Originals
❑ Copy of Letter
❑ Specifications ® Applications
❑ Submittals ❑ Other:
We are sending you the following items:
No. of Copies Date
Description
•
2
23-Dec-05
Original Stormwater permit applications
•
1
23-Dec-05
Original of each Infiltration Basin Supplement (4 basins)
•
2
23-Dec-05
Calculations I Narrative
•
1
23-Dec-05
Express Review Permit Fee ($4,000.00)
•
2
23-Dec-05
Plans
•
1
23-Dec-05
Infiltration Site Visit results and soil evaluation
• 1
to USACOE.
23-Dec-05
Full documentation of what Land Management Group sent
Additional Remarks:
Please review the attached documents for DWQ Express Review approval. I trust this information is
sufficient for your express review.
Please call me at [phone] if you have any questions.
Thank you,
Signed
Kenneth A. Loring, PE PLS
cc: File

CLH design, p.a.
MacGregor Park, 129 Edinburgh South, Suite 310
Cary, North Carolina 27911
Phone: [phone] Pax: [phone]
12-23-05
TO:
Linda Lewis- Division of Water Quality
FROM:
Renee Scott
RE:
EXPRESS REVIEW
OGDEN ELEMENTARY SCHOOL
CC:
File (I 217-prmt)
Dear Ms. Lewis,
On November 11, 2005 Engineer Consulting Services, LTD. (ECS) Conducted an infiltration evaluation
on site at our proposed infiltration basin locations and determined the seasonal High Water table, the
results are attached. On December 13, 2005, Soil and Water Conservation, Vincent Lewis, scheduled a
meeting on site to review the results determined by Engineering Consulting Services, LTD. (ECS). What
he had found was that the seasonal high water table elevations were significantly lower than when
originally tested by ECS. Attached is a sketch done by Vincent Lewis showing the depths at the
proposed locations.
For the proposed infiltration basins we've utilized the seasonal high water table elevations determined by
Vincent Lewis, Soil and Water Conservation.
Please let us know if you should have any questions.
Sincerely,
Renee Scott
RECEIVED
DEC 2 9 2m
DWQ
InNvmbn CovuL 11e1.d a

DEC.20.2005 10:11RM NCDENR WIRO NO.72e'— 'P.4— — — --
Infiltration Evaluation
Ogden Elementary School Proposed Infiltration ponds
Wilmington, North Carolina
ECS Project No. 22.11691
November 11, 2005
Location D-�pth Soil Descri Lion
#1 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 12" below the existing,grade
elevation.
Infiltration Rate: 0.14 inches per minute (8.4 inches per hour)
Test was conducted just below existing grade surface,
#2 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 18" below the existing grade
elevation.
Infiltration Rate: 0.20 inches per minute (12.0 inches per hour)
Test was conducted just below existing grade surface.
#3 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal Nigh Water Table was estimated to be at 18" below the existing grade
elevation.
Infiltration Rate: 0.04 inches per minute (2.4 inches per hour)
Test was conducted just below existing grade surface.
#4 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 12" below the existing grade
elevation.
Infiltration, Rate: 0.05 inches per minute (3.0 inches per hour)
Test was conducted just below existing grade surface,

DEC.20.2005 10:11RN NCDENR WIRO
INFILTRATION SITE VISIT REQUEST
Name of the Project:
Location (attach a clear vicinity map):
number, communly, etc.
NO.728 ' P. 3 -' --
a
Directions from the nearest major intersection;
Owner/Applicant Name:_Ll
Consultant Name: CA-w- r---jb= e
Consultant Contact
#1
#2
#3
#4 #5 #6 #7 #g
Existing ground elev. @basinftrench=
2(0•,5
L'I.
Z8.3
Z9,9
SHIM" elev,=
7�.15 Z.to.2 21o.S Z't-S
SHWT plus 2' (max. bottom elev.)= 2-1.15 M-L Vs.8 z9.8
Date/Time of Soils Investigation:
Summary/Comments:
All proposed infiltration areas and existing, active utility lines located within the proposed basin/trench
must be marked and flagged. If these areas are not flagged, the Soils Scientist reserves the right to
pavlem nt to amid thereist investigf the ation.
nearby, equipmeion nt capable a ofwill
brreeakinglocated
through the impervious
layer must be provided. The soils investigation does not take the place of a soils report prepared by
an appropriate professional. The Soils Scientist will only verify the soil conditions that are reported in
the Soils Report, and make a determination as to the suitability of the site to meet the Infiltration
design requirements under NCAC 2H.1000, and assumes no liability should the system fail.

A
OW, 6114 ,Xi 2522
°1fXlsnis>�./Yosl/v �a�oG.��m28402
5'ok.910-652-000J
,ax.• 9f0-/52-0060
✓$.e-.y,r� fire I./.n:.I,
Ms. Renee Scott
CLH Design, Inc
125 Edinburgh South Drive, Suite 310
Cary, NC 27511
Telephone: [phone]
Fax: [phone]
,99alaf4
�iiINI4N.a!' �NIJ�I' �/�A�N� Ak
sxos alF,yt6I L:II ..dJ ,I�
�%i'i(ilxior�(wg r/t'r/S 28903
jDecember 22, 2005
RECEIVED
nROJ #
DEC 2 9 2005
DWQ
Re: 404 Wetland Assessment of Ogden Elementary School, Wilmington, NC.
Dear Ms. Scott,
Pursuant to your request, I am summarizing the status of the wetland delineation on this
tract to document the presence and location of any areas meeting the required three
parameters necessary to be considered a jurisdictional 404 Wetland. LMG conducted
the wetland delineation on the tract and submitted the data package to Jennifer Frye,
USACE for field verification. Robert H. Goslee & Associates, P.A. performed the
wetland survey. This final plat has been forwarded to the Corps for sign -off.
The wetlands onsite are confined to isolated sinkholes and are not expected to be
changed by the Corps' review nor should the wetland map change. The proposed site
plan also has no impacts to the wetlands.
To that end we submitted the appropriate data package, see attached copy, to the
Corps on December 8, 2005 to Mrs. Jennifer Frye. We recently received survey
drawings from Bob Jones of Robert H. Goslee & Associates, P.A. for this site. We have
forwarded these drawings to the Corps for inclusion into the other site documents.
Jennifer has indicated she will be making site visits after the first of the year. Efforts to
get her onsite earlier than this have proven fruitless.
CADataWEW HANOVEMOGDEN SCHOOL\letter of findingst.doc

We will continue to obtain written concurrence of our wetland assessment from the
Corps. Please contact me if you have other questions or concerns.
S.0 Certification
Number 57
Respectfully,
G. Craig Turner
Vice President
Land Management Group, Inc.
NC Licensed Soil Scientist # 1091
SC Certified Soil Scientist # 57
C:\Data\NEW HANOVER\OGDEN SCHOOLVetter of findingstdoc

AGA RECEIVED
NCDENR
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive, Wilmington NC 28405 [phone] FAX [phone] DEC 2 9 2005
Request for Express Permit ReviewoROJ #
DWQ
FILL-IN all information below and CHECK required Permit(s).
FAX or email to Cameron. Weaverla)ncmail.net along with a narrative and vicinity map of the project location.
Projects must be submitted by 9:00 A.M. of the review date, unless prior arrangements are made.
APPLICANT Name
Company Nt_ 1F4�cybz cnuttn�t �cl���
Addresst9Nto lam. City/State wluwNc�ortiN� Zip 71aL412. County LJ ,, ttANaFr-
Phone [9t4 zeL4- L4za2 Fax Email Eno E_r.Ne�xxvap N44cs.k z.tdc .u7
PROJECT Name oGb5_N E�:,ca+ooL_
PROJECT SYSTEM(S) TRIBUTARY TO 46wt=. Ly£Et, (STREAM NAME) T.�1T'Fecv5TAL,sL w RIVER BASIN
Company n,,,-
Address 1 � 15- t 5u lt-4 r� . City/State CA4-`r , Nc- Zip zest I County w a.r->= .
Phone (-tiaL) Fax_Ca�a� 31a- lGillo Email kwr�r tc� G�ttb�slc�titPa .car
State or National Environmental Policy Act (SEPA, NEPA) - EA or EIS Required ❑ Yes ❑ No
❑ STREAM ORIGIN Determination; _# of stream calls; Stream Name
'VISTORMWATER ❑ Low Density ❑ High Density -Detention Pond ❑ High Density -Other
Wetlands MUST be addressed below ❑ Low Density -Curb & Gutter �0 High Density -Infiltration ❑ Off Site
❑ COASTAL
MANAGEMENT
❑ LAND QUALITY
❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
❑ Erosion and Sedimentation Control Plan with acres to be disturbed.
WETLANDS (401) Wetlands on Property' Yes ❑ No Isolated Wetlands on Property ❑ yes ❑ No
Check all that apply Wetlands Will Be Impacted ❑ Yes-4 No Wetland Impacts: Acre(s)
Wetlands Delineation has been completed Yes ❑ No ❑ Buffers Impacted: Acre(s)
USA COE Approval of Delineation completed Yes ❑ No
—� 404 Application in process w/USACOE ❑Yes No 1 Permit received from USACE ❑Yes ❑No
Niol- v� ; ed, r`to 401 Application requited ❑Yes No If Yes, ❑ Regular ❑ Express
------- ----
--------- ------------------------- ------------------------------------ --------- ------------- --------------- -----------
Additional fees, not to exceed 50% of the original Express Review permit application fee, may be charged for
subsequent reviews due to the insufficiency of the permit applications.
For DENR use only
SUBMITTAL DATES: Fee Split for multiple permits:
SW $
CAMA $
LQS $
Total Fee Amount $

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NEW NANO =11w BOARD IF FDIICAmm
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RECEIVED
<�
DEC 2 9 2005
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DWQ
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ECEIVED
DEC 2 9 2005
DWQ
J#
51It
SCALE V = 2 Miles
Ma Source: DeLorrne: North Carolina Atlas and Gazetteer. 2001 pg. 84.
Land Management Group, Inc. Ogden Elementary School
Environmental Consultants
Site Location Wilmington, N.C. New Hanover County, NC
May 2005 �,

Source: Scotts Hill, N.C., 1970, USGS 7.5'
Land Management Group, Inc.
Environmental Consultants
USGS Topo Wilmington, N.C.
May 2005 03-05-200
SCALE 1" = 1000'
Ogden Elementary School
New Hanover County, NC

1" = 1000'
Land Management Group, Inc.
New Hanover County Environmental Consultants Ogden Elementary School
Soil Survey (p. 11) Wilmington, N.C. New Hanover County, NC
May 2005 n¢_ns_gnn

Cl
T+.
C, 404Wetland
(Lqi
I
B9
i, 1L / 404
r a in \ `., Wetland 6A
'Boundaries are approximate and are
not meant to be absolute.
SCALE 1" = 1000'
Land Management Group, Inc.
Preliminary 404 Environmental Consultants Ogden Elementary School
Wetland Delineation Wilmington, N.C. New Hanover County, NC
May 2005 03-05-200

DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination Manual)
Project /. Site: Ogden Elementary School
Date: 05-05-05
Applicant / Owner: Carmen Gintolii - New Hanover County Schools
County: New Hanover
Investigator: Land Management Group - Craig Turner
State: North Carolina
Do normal circumstances exist on the site? Yes x No_
Community ID:U ID and
Is the site significantly disturbed (Atypical situation)? Yes_ No x
Transact ID: Up-1
Is the area a potential problem area? Yes_ No x
Plot ID:
(explain on reverse if needed)
VEGETATION
Dominant Plant SpGcIes
Stratum
Indicator
Dominant Plant Species Stratum Indicator
1.Liguidambarstvraciflua
T
FAC+
9.
2. Vitis rotundifolia
Herb
FAC
10.
3Pinus taeda
T
FAC
11.
4.Quercus niara
T
FAC
12.
S.Aralia spinosa
Shrub .
FAC
13.
6.Magnolia virolniana.
T
FACW+
14.
7.Svmnlocos tinctoria
Shrub
FAC
_
15.
8.Lioustrum sinense
Shrub
FAC
16.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 100%
Remarks:
HYDROLOGY
x Recorded Data (Describe In Remarks)
Stream, Lake, or Tide Gauge
x Aerial Photographs
Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Free Water in Pit:
Depth to Saturated Soil:
Remarks:
No observed hydrology indicators.
Wetland Hydrology Indicators
Primary Indicators:
Inundated
_Saturated in Upper 12"
_ Water Marks
Drift Lines
_ Sediment Deposits
Drainage Patterns in Wetlands
>24 (`°.) Secondary Indicators:
>24 Oxidized Roots Channels in Upper 12"
(in.) Water -Stained Leaves
>24 — Local Soil Survey Data
(in.) FAC-Neutral Test
Other (Explain in Remarks)

SOILS
Map Unit Name
(Series and Phase): Seagate
Drainage Class: somewhat poorly drained
Taxonomy (Subgroup):Typic Haplohumods
Confirm Mapped Type? Yes_(_ No_
Profile Description:
Depth Matrix Colors Mottle Colors
Mottle Texture, Concretions,
(inches) Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure. etc.
0-3" A 10YR 3/2
Loamy sand
3-14" E 10 YR 6/3
Loamy sand
14-23" Bh 10YR 4/3
Loamy sand
Hydric Soil Indicators:
Histosol _Concretions
_
_ Histic Epipedon _High
Organic Content in Surface Layer in Sandy Soils
.
Odor _Organic
Streaking in Sandy Soils
_Sulfidic
_Aquic Moisture Regime _Listed
On Local Hydric Soils List.
—Reducing Conditions _Listed
on National Hydric Soils List
Gleyed or Low-Chroma Colors _Other
(Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes x No
Wetland Hydrology Present? Yes No x
Hydric Soils Present? Yes _ No x
34.2662°N, 77.8095°W (WGS84/NAD83)
Applicant: Carmen Gintolli
New Hanover County,Schools
6410 Carolina Beach Road
Wilmington, NC 28412
Is the Sampling Point
Within a Wetland? Yes_ No x
.Agent: Land Management Croup, Inc.
PO Box 2522
Wilmington, NC 28402
[phone]

DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Determination, Manual)
Project / Site: Ogden Elementary School
Date: 05-05-05
Applicant / Owner: Carmen Gintolli - New Hanover County Schools
County: New Hanover
Investigator: Land Management Group - Craig Turner
State: North Carolina
Do normal circumstances exist on the site? Yes x No
Is the site significantly disturbed (Atypical situation)? Yes_ No x
Community ID:Wetland
Transect ID: Wet-1
Is the area a potential problem area? Yes_ No x
Plot ID:
(explain on reverse if needed)
VEGETATION
Dominant Plant Species Stratum Indicator
1.Nvssasy/vatica T FAC
2.Acer rubrum T FAC
3.A/nusserrulava Shrub FACW+
4.Cyrilla racemifiora Shrub FACW
5.Typha spp. —_ FACW+
7
Dominant Plant Species Stratum Indicator
11.
12.
13.
14.
15.
16.
Percent of Dominant Species that are OBL, FACW, or FAC excluding FAC-). 100%
HYDROLOGY
x Recorded Data (Describe In Remarks):
Stream, Lake, or Tide Gauge
x Aerial Photographs
Other
No Recorded Data Available
Field Observations:
Depth of Surface Water:
Depth to Free Water in Pit:
Depth to Saturated Soil
Remarks:
Wetland Hydrology Indicators
Primary Indicators:
X Inundated
X Saturated in Upper 12"
_ Water Marks
Drift Lines
_ Sediment Deposits
Drainage Patterns in Wetlands
Secondary Indicators:
Oxidized Roots Channels in Upper 12"
<12" (in.) _ Water -Stained Leaves
Local Soil Survey Data
8" (in.) _ FAC-Neutral Test
Other (Explain in Remarks)

SOILS
Map Unit Name
(Series and Phase): Murville
Drainage Class: very poorly drained
Taxonomy (Subgroup):Typic Haplaouods
Confirm Mapped Type? Yes_ No x
Profile Description:
Depth Matrix Colors
Mottle Colors Mottle Texture, Concretions,
(inches) Horizon (Munsell Moist). -
(Munsell Moist) Abundance/Contrast Structure. etc.
0-8" Oa 10YR 2/1
Mucky sand
8-13" A 10YR 2/2
Sand
13-21" Bh 10YR 4/3
Sand
Hydric Soil Indicators:
X Histosol
_Concretions
Histic Epipedon
x_High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor
_Organic Streaking in Sandy Soils
_
X Aquic Moisture Regime
X_Listed On Local Hydric Soils List
X Reducing Conditions
_Listed on National Hydric Soils List
Gleyed or Low-Chroma Colors _Other (Explain in Remarks)
Remarks:
WETLAND DETERMINATION
Hydrophytic Vegetation Present? Yes x No
Wetland Hydrology Present? Yes x No
Hydric Soils Present? Yes x No
34.2662°N, 77.8095°W (WGS84/NAD83) Scotts Hill quadrangle
Is the Sampling Point
Within a Wetland? Yes x No
Applicant: Carmen Gintolli Agent: Land Management r,iroup, inc.
New Hanover County Schools PO Box 2522
6410 Carolina Beach Road Wilmington, NC 28402
Wilmington, NC 28412 [phone]

ENGINEERING CONSULTING SERVICES, LTD.
Geotechnical o Construction Materials o Environmental
November 16, 2005
Mr. Carmen Gintoli
New Hanover County Schools
6410 Carolina Beach Road
Wilmington, North Carolina 28412
Re: Infiltration Evaluation
Ogden Elementary School
Wilmington, North Carolina
ECS Project No. 22.11315
Dear Mr. Gintoli:
Engineering Consulting Services, Ltd. (ECS) recently conducted an infiltration evaluation for
the proposed infiltration ponds at Ogden Elementary School off of Middle Sound Loop Road in
Wilmington, North Carolina. This letter, with attachments, is the report of our investigation.
Field Investigations
On November 9 and 11, 2005, ECS conducted an investigation of the subsurface soil and
ground water conditions at the four requested locations shown on the attached Site Diagram.
The purpose of this investigation was to obtain subsurface information of the suitability of the
in -place soils for the proposed infiltration ponds. We investigated the subsurface soil and
ground water conditions by drilling four hand auger borings to a depth of approximately five
feet below the existing ground surface at the requested test locations. We visually classified the
subsurface soils and obtained representative samples of each soil type encountered. We also
recorded the ground water level observed at the time of the hand auger boring. The attached
Infiltration Evaluation Form provides a summary of the subsurface conditions encountered at
the hand auger boring locations.
Our field classification indicated that the subsurface soils at the test locations consisted of a
strata of brown slightly silty sand.
Ground water was encountered at the time of our exploration at test locations #1 and #4 at a
depth of 30 inches and at test location #2 and #3 at a depth of 48 inches below the existing
grade elevation. The seasonal high ground water level was estimated to be at a depth of 12
inches for test locations #1 and #4 and at a depth of 18 inches below existing surface grade for
test locations #2 and #3.
We have conducted infiltration tests near our hand auger borings to estimate infiltration rates for
the subsurface soils. The infiltration tests were conducted just below the existing surface grade
within the stratum of gray sand to slightly silty sand. The results of the tests are summarized on
the Infiltration Evaluation Form and are also listed below.
7211 Ogden Business Park 0 Suite 201 ' Wilmington, NC 28411 ° [phone]' Fax [phone]

Infiltration Evaluation
Ogden Elementary School Proposed Infiltration Ponds
Wilmington, North Carolina
ECS Project No. 22.11691
Field Test Results
At test location #1, the infiltration test was performed just below the existing grade surface and
indicated an infiltration rate of 0.14 inches per minute (8.4 inches per hour). At test location #2,
the infiltration test was performed just below the existing grade surface and indicated an
infiltration rate of 0.20 inches per minute (12.0 inches per hour). At test location #3, the
infiltration test was performed just below the existing grade surface and indicated an infiltration
rate of 0.04 inches per minute (2.4 inches per hour). At test location #4, the infiltration test was
performed just below the existing grade surface and indicated an infiltration rate of 0.05 inches
per minute (3.0 inches per hour).
If you have any questions regarding this report, please contact us at [phone].
Respectfully,
ENGINEERING CONSULTING SERVICES, LTD.
Kris J. Stamm
Construction Services Manager
Attachments: Site Diagram
htfiltrafion Evaluation
M � I , ' I
Walid M. Sobh, P. E.
Principal Engineer
NC License No. 22983

r
Od
i
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'POND M
r
%� • r WE NEED SOIL TYPE AND INFILTRATION R
h r Sjr /AND HIGH WATER TABLE ELEVATION FOR
/ PROPOSED INFILTRATION PONDS.
i
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PROJECT NO.
DRAWING NO,
SCALE
DRAWN BY
1

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Infiltration Evaluation
Ogden Elementary School Proposed Infiltration Ponds
Wilmington, North Carolina
ECS Project No. 22.11691
November 11, 2005
Location Depth Soil Description
#1 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 12" below the existing,grade
elevation.
Infiltration Rate: 0.14 inches per minute (8.4 inches per hour)
Test was conducted just below existing grade surface.
#2 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 18" below the existing grade
elevation.
Infiltration Rate: 0.20 inches per minute (12.0 inches per hour)
Test was conducted just below existing grade surface.
#3 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water.Table was estimated to be at 18" below the existing grade
elevation.
Infiltration Rate: 0.04 inches per minute (2.4 inches per hour)
Test was conducted just below existing grade surface.
#4 0-60" Gray Fine to Medium SAND, trace of Silt
Seasonal High Water Table was estimated to be at 12" below the existing grade
elevation.
Infiltration Rate: 0.05 inches per minute (3.0 inches per hour)
Test was conducted just below existing grade surface.