SW8980204_HISTORICAL FILE_20050706

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 q�Oo� l
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
.L� HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Michael F_ Easley, Governor
CID
r-----
U 'C
July 6, 2005
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Commander Lawrence Readal
Public Works Officer
United States Marine Corps Air Station New River
1005 Michael Road
Camp Lejeune, NC 28547
Subject: Stormwater Permit No. SW8 980204 Modification
Bachelor Enlisted Quarters MICAS New River
High Density Project
Onslow County
Dear Commander Readal:
Alan W. Klimek, P.E. Director
Division of Water Quality
The Wilmington Regional Office received a complete Stormwater Management Permit Application for
Bachelor Enlisted Quarters MCAS New River on July 5, 2005, 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 980204
Modification dated July 6, 2005, for the construction of the subject project. This permit modification
includes a facility name change, a new detention pond to be constructed, and no, change to either the
impervious area draining to or the design of the existing, permitted detention pond.
This permit shall be effective from the date of issuance until July 6, 2015, and shall be subject to the
conditions and limitations as specified therein. Please pay special attention to the Operation and
Maintenance requirements in this permit. Failure to establish an adequate system for operation and
maintenance of the stormwater management system will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please contact Paul
Bartlett, or me at [phone].
Sincerely,
'ward Beck
Regional Supervisor
Surface Water Protection Section
ENBlptb: S:IWQSISTORMWATERIPERMIT1980204MOD
cc: Timothy E. Stewart, P.E., Parkef & Associates, Inc.
Mike Morris, Onslow County Building Inspections
Division of Coastal Management
Paul T. Bartlett, P.E.
Wilmington Regional Office
Central Files
North Carolina Division of Water Quality 127 Cardinal Drive Extension Phone [phone] Customer Service 1 -877 -623-6748
Wilmington Regional Office Wilrrhglon, NC 26405-M45 FAX (910} 350-2004 Internet: h2o.enr.state.nc us One
NorthCarol/ina
An Equal Opperlunit fAffirmalive Action Employer — 50% Recycled/10% Post Consumer Paper Aaturallil

State Stormwater Management Systems
Permit No. SW8 980204 Modification
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
Commander Lawrence Readal and United States Marine Corps Air Station New River
Bachelor Enlisted Quarters MCAS New River
Onslow County
FOR THE
construction, operation and maintenance of a new and an existing, permitted, wet
detention pond 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 July 6, 2015, and shall be
subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system (existing and proposed construction) has been approved
for the management of stormwater runoff as described in Section 1.6 on page 3
and Section 1.7 on page 4 of this permit. The new stormwater control has been
designed to handle the runoff from 135,226 square feet of impervious area, and
there is no change to the permitted impervious area of 160,736 square feet for
the existing stormwater control.
3. The tract will be limited to the amount of built -upon area indicated on page 3 and
page 4 of this permit, and per approved plans. An allocated built -upon area for
future development is limited to 22,650 square feet for drainage to the existing
stormwater control (equal to the amount of impervious area being reduced by the
proposed construction that drains to the existing stormwater control). The
"Project Design Data Sheet" for the existing, permitted, stormwater control
remains unchanged and is included on page 4 of this permit.
Page 2 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
In
5
0
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.
The runoff from all built -upon area within the permitted drainage area of this
project must be directed into the permitted stormwater control system.
The following design criteria have been provided in the proposed, new, wet
detention pond and must be maintained at design conditions when in operation:
a. Drainage Area, 9cres: 4.36
Onsite, ft 189,922
Offsite, ft2: None
b.
Total Impervious Surface�,.ft2:
135,226
On -site buildings,ft : 9,934
On -site streets, ft - 7,246
On -site parking, ft : 109,907
On -site sidewalks, ft2: 8,139
C.
Design Storm, inches:
1.0
d.
Pond Depth, feet:
5.0
e.
TSS removal efficiency:
90%
f.
Permanent Pool Elevation, FMSL:
14.6
g.
Permanent Pool Surface Area, ft2:
9,900
h.
Permitted Storage Volume, ft3:
15,389
i.
Temporary Storage Elevation, FMSL:
16.0
j. Controlling Orifice:
k. Permitted Forebay,Volume, ft3
I. Receiving Stream/River Basin:
m. Stream Index Number:
n. Classification of Water Body
1.5" 0 pipe
3,625
UT to Southwest Creek 1 White Oak
19-17-(0.5)
"C; NSW"
Page 3of9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
7. Existing Detention Pond
Permit No. SW8 980204 Modification, Issued June 4, 1999
DIVISION OF WATER QUALITY
PROJECT DESIGN DATA SHEET
Project Name: Bachelor Enlisted Quarters P-587
Permit Number.
Location:
Applicant:
Mailing Address:
Application Date:
Water Body Receiving Stormwater Runoff
Classification of Water Body:
If Class SA, chloride sampling results:
Pond Depth, feet:
Permanent Pool Elevation, FMSL (Meters)
Total Impervious Surfaces, ft2:
Offsite Area Entering Pond, ft2:
Required Surface Area, ftZ:
Provided Surface Area, ft2.
Required Storage Volume, W:
Provided Storage Volume, ft3:
SW8 980204 Modification
Onslow County
Commander Mason Crum, CEC, USN
Marine Corps Base Camp Lejeune
PSC Box 20004
Camp Lejeune, INC 28542
June 3, 1999
New River (WHO 19-(15.5))
"SC NSW"
nla
4.5
16,8 (5.12)
160,736
none, per Engineer
12,481
14,475
13,631
15,706
Temporary Storage Elevation, FMSL (Meters): 17.82 (5.43)
Controlling Orifice: 2"0 pipe (51 mm 0)
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.
Page 4 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
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.
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 be allowed in the stormwater treatment system,
subject to the following criteria:
a. The fountain must draw its water from less than 2' below the permanent
pool surface.
b. Separated units, where the nozzle, pump and intake are connected by
tubing, may be used only if they draw water from the surface in the
deepest part of the pond.
c. The falling water from the fountain must be centered in the pond, away
from the shoreline.
d. The maximum horsepower for a fountain in either of the two ponds is 1/8
horsepower.
6. 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.
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.
8. 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.
Page 5 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
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 LAMA
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.
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.
Page 6 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
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 6th day of .duly 2005.
NORT AROLINA ENVIRONMENTAL_ MANAGEMENT COMMISSION
Alan W. Klimek, P.E., Director
711-1 Division of Water Quality
By Authority of the Environmental Management Commission
Page 7 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
Bachelor Enlisted Quarters MCAS New River
Stormwater Permit No. SW8 980204 Modification
Onslow County
Designer's Certification
I, , as a duly registered
in the State of North Carolina, having been authorized to observe (periodically/ weekly/
full time) the construction of the project,
(Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification.
Noted deviations from approved plans and specification:
Signature
Registration Number
Date
SEAL_
Page 8 of 9

State Stormwater Management Systems
Permit No. SW8 980204 Modification
Certification Requirements:
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. All roof drains are located such that the runoff is directed into the system.
5. The outlet/bypass structure elevations are per the approved plan.
6. The outlet structure is located per the approved plans.
7. Trash rack is provided on the outlet/bypass structure.
8. All slopes are grassed with permanent vegetation.
9. Vegetated slopes are no steeper than 3:1.
10. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
11. The permitted amounts of surface area and/or volume have been
provided.
12. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
14. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
15. The required system dimensions are provided per the approved plans.
CC' NCDENR-DWQ Regional Office
Mike Morris, Onslow County Building Inspections
Page 9 of 9

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PARKER & ASSOCIATES, INC.
Consulting Engineers - Land Surveyors - Land Planners
306 New Bridge Street + P.O. Box 976
Jacksonville, NC 28541-0976
[phone] + Fax: [phone]
Mr. Cameron Weaver
NCDENR-Division of Water Quality
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
RECEIVED aE
JUL 0 SW 5 o Z ��
BY:
Dear Mr. Weaver:
July 1, 2005
MCAS New River
" Vping Horizp k
Bachelor Enlisted Quarters - P630
Onslow County, North Carolina
Express Stormwater Submittal
Enclosed for your review and approval are the following items contained in this
Stormwater Permit Submittal Package for the above referenced project:
1. Two (2) set of Plans (Sheets G-101 - G-102, C-101, C-603, 604, and 605).
2. One (1) original and one (1) copy of the Stormwater Permit Application and Wet
Detention Pond Basin Supplements.
3. Two (2) copies of Stormwater Pond Calculations.
4. Two (2) copies of Stormwater Narrative.
5. One (1) original Stormwater Delineation Plan (Sheets 1 and 2 of 2).
6. One (1) check in the amount of $4,000.00 for the Application Fee.
If you have any questions or need any additional information, please call.
Sincerely,
PARKER & ASSOCIATES, INC.
. k*
Timothy St wart, P.E.
Enclosures
xc: LTJG Richard Contreras with enclosures
Mr. Bob Sanford with enclosures
Mr. Francis Hernandez with enclosures
CF(P), LAM
TMS/Sws ����11���
c2�Nv[w��ri��1�iVTA INGINEE RING + STORM WATER MANAGEMENT + WATER AND WASTEWATER SYSTEMS
DEVELOPMENT CONSULTING + FEASIBILITY REPORTS + COMPUTER AIDED DESIGN + CONSTRUCTION PLANS

STORMWATER MANAGEMENT NARRATIVE
BACHELOR ENLISTED QUARTERS - BEQ P630
MARINE CORPS AIR STATION - NEW RIVER
JUNE 2005
This project consists of removing then replacing an existing BEQ Building and Parking Lot
at the corner of Demarko Street and Douglass Road at MCAS New River. Caddell Construction is
the Design/Build Contractor for the project. Edward J. Cass and Associates is the project Architect/
Engineer in conjunction with Parker and Associates providing civil engineering assistance for the
design and permit submittal/approval process.
This project is being submitted as a modification to existing permit No. SW8980204. This
existing permit was for the now existing BEQ P-587, which was a redevelopment project similar to
this new BEQ P-630 project in that existing building and parking was demolished and replaced with
new building and parking. Some of this new P-630 project area will continue to flow to the existing
pond. Therefore this requested modification revise the area flowing to the existing pond as well as
proposes a new pond.
As shown on the attached Stormwater Delineation Plan, the project limits is divided into 3
drainage basins.
Basin A Collects stormwater from existing grassed areas West of the parking lot and routes it
to an existing storm drain pipe that flows offsite across Douglass Road to the south. There is
no new impervious flowing to Basin A.
Basin B Collects stormwater from the new parking lot and half of the Southern most BEQ
Building and routes it to the proposed stormwater pond.
Basin C Collects stormwater from half of the Southern BEQ and all of the Northern BEQ and
pervious area to the North and routes it to the existing stormwater pond. All of the existing
area in Basin C currently flows to the existing stormwater pond, therefore, it is proposed to
continue routing it to the existing pond. As you can see on the attached Stormwater
Delineation Plan, less total area will now go to the existing pond than currently goes there
and less impervious area will go to the existing pond than does currently. See Permit the
Application and Stormwater Delineation Plans showing the new area quantities.
The total project area going to the proposed pond is 4.36 acres. The proposed impervious
areas going to the proposed pond as itemized in the Stormwater Permit application is 3.10 acres.
Therefore, the proposed project percent impervious is 7 1. 1 %.
For additional information, see the plans and the attached Stormwater Permit Application.
c2:Forms.Sto rmwater.USMCASNt.BEQ.nar.6.3 0.05

BEQ MCAS NEW RIVER, BEQ P-630
1. AREA
Total Area
Impervious Area:
E
JACKSONVILLE, NORTH CAROLINA
STORMWATER DETENTION POND
ENGINEERING CALCULATIONS
Building , Drives, Parking, and Sidewalks
4.36 Acres
135,226 SF
Percent Impervious = Impervious = 3.10 = 71.1 % use 72 %
Total 4.36
PERMANENT POND SURFACE AREA
SEEPL36,W
14
t
o•r. cr KEE.••• q-
ly),'M'
From Chart 4 - Appendix E from D.E.M. Report 87-05, for 72% impervious,5.0
basin depth without Vegetative Filter (90% TSS Removal) Yields SA/DA = 5.14%
(Interpolation between 70 % and 80 %)
4.36 acres x 5.14% = 0.2241 acres or 9,762 SF surface area required
Top of permanent pond elevation is 14.6
Area at 14.6 elevation = 9,900 SF provided
9 900 SF provided > 9,762 SF required
3. TEMPORARY DETENTION STORAGE VOLUME
Retain 1" of runoff from area draining to pond
Use Schueler "Simple Method" from Stormwater Best Management Practices
Manual

u
ENG-2
RV = 0.05 + 0.009 (1)
RV = Runoff coefficient (inch per inch)
I = Percent Impervious
RV = 0.05 + 0.009 (72) = 0.698 inch 1 inch
Find Temporary Storage Volume
V = (Design Rainfall) (RV) (Drainage Area)
= 1 inch X 0.698 inch 1 inch X 1 ft. X 4.36 Acres X 43,560 SFIAc
12 in.
= 11,047 CF Required
4. TEMPORARY DETENTION STORAGE VOLUME
Use 1.4 Ft. Temporary Pool
Area at 14.6 elevation (permanent pond) = 9,900 SF
Area at 16.0 elevation (temporary pond) = 12,084 SF
Average Area = 10,992 SF
Storage Vol.= 10,992 SF x 1.4 Height = 15,389 C.F. provided
15,389 C.F. provided > 11,047 C.F. required
5. RELIEVE TEMPORARY STORAGE VOLUME IN 2 TO 5 DAYS
Q = Cd A 2gh (orifice equation)
Q = 11,047 C.F. + 2 days = 0.0639 CFS
Q = 11,047 C.F. + 5 days = 0.0256 CFS
Cd = 0.60
g = 32.2 ftlsec
h = 0.70 average height

l
ENG-3
For 2 Day Release
Solve For A =
Q = 0.0639 = 0.0159 S.F.
CD 2gh (0.6) 2(32.2)(0.70)
Solve for Orifice Diameter, D
A = 0.0159 SF = n R2
R = 0.071 ft. = 0.85 inch
D = 1.7 inch
For_5 Day Release
Solve For A = Q =
CD 2gh
Solve for Orifice Diameter, D
A = 0.0063 SF = rr - R2
R = 0.045 ft. = 0.54 inch
D = 1.1 inch
Use 1.5 inch diameter orifice
0.0256 = 0.0063 S.F.
(0.6) 2(32.2)(0.70)
6. SIZE OUTLET RISER PIPE AND OUTLET PIPE TO HANDLE 10 YR. 1 HR.
STORM
A. 10 Year 1 Hour Storm Flow
Q = CiA
A = 4.36 acres
C = 0.8
i = 2.88 in./hr. - 10 year, 1 hr. storm
Q = 0.7 (2.88) 4.36 = 10.0�c_fs

ENG-4
B. Outlet Pipe
Water height before rising 3'
19.0 - 16 = 3.0 feet
1. Outlet Pipe as Orifice_
Q = Cd A 2gh (orifice equation)
Cd = 0.6 (typical value)
H = 3.0
Q = 10.0
2g = 64.4
Solve For A = Q =
CD 2gh
Solve for Riser Pipe Diameter, D
A=1.2S.F.=rrR2
R = 0.62 Ft. = 7.4 Inches
D = 14.8 inches
2. Outlet Pipe as Weir
10.0 = 1.2 S.F.
(0.6) 2(32.2)(3)
Water Height before rising 3' = 19.0 - 16 = 3.0 feet
Q = CwL W2
Cw = 3.33
L = Length of Weir = 2 rr R
15" pipe = 3.93
H = 3 feet
Q = 3.33 (3.93) 3 "2
-- 68 CFS - Won't act as Weir, use Orifice results
15" PIPE OK FOR RISER PIPE FOR 10 YR. 1 HR. STORM

ENG-5
C. Outlet Pipe
1. Check Orifice Equation
Q = Cd A 2gh (orifice equation)
A = TT R2 = Assume 15" Pipe = 1.23 S.F.
h = 3` Rise
Q=0.6(1.23)2(32.2)(3)
Q = 10�will handle 10 year 1 hour flow of 10.0 cfs
2. Check Gravity Flow
15" pipe installed at 1.0 %
Use Manning's Equation
Q= 1.49 X A R 2i3 S Y2
n
For 15" Corrugated Aluminum Pipe Q = 6.5 cfs Not Big Enough
For 18" Corrugated Aluminum Pipe Q = 9�.1 cfs Not Big Enough
For 24" Corrugated Aluminum Pipe Q = 16©.3 cfs Ok
USE 24" Corrugated Aluminum Pipe OUTLET PIPE
7. 100 Year Flood
Q = CIA
Composite C = 0.8
i ,00 = 4.15 in 1 hr for 1 hour duration flood
A = 4.36 acres
Q = 0.8 (4.15) (4.36) = 14
Design to handle 100-yr flood through riser and outlet pipes prior to topping pond

ENG-6
A. Riser Pipe
As calculated before 24" Riser Pipe can handle 26 CFS as Orifice and
109 CSF as a weir, therefore is OK to handde 100 year 1 hour flow of 13.0
CFS
B. Outlet Pipe
As calculated before 24" Outlet Pipe can handle 16.3 CFS flowing full and
will accept 26 CFS as an Orifice. Therefore use a 24" corrugated
aluminum pipe for the outlet pipe.
Therefore, riser and outlet pipe will handle 100 yr. Storm. No emergency
spillway required.
8. Forebay Volume,
Forebay Volume shall contain approximately 20% of the total permanent
pond volume.
Forebay Volume
Volume below berm - Area at bottom Elevation 9.6 = 125 SF
Area at berm Elevation 13.6 = 1125 SF
Average Area X 4' Depth = 2500 CF
Volume of berm Elevation to permanent pool Elevation -
Area at berm Elevation 13.6 = 1125 SF
Times 1' height above pond = X 1
1125 CF
TOTAL FOREBAY VOLUME = 3625 CF ✓

ENG-7
Total Permanent Pool Volume
Forebay Volume Below Berm (shown above) = 2500 CF
Main Basin Volume - Area at bottom Elevation 9.6 = 625 SF
Area at berm Elevation 13.6 = 3625 SF
Average Area X 4' Depth = 8500 CF
Volume from berm Elevation 13.6 to Elevation 14.6
Area at 13.6 = 5000 SF
Area at 14.6 = 9900 SF
Average Area X 1' Depth - 7450 CF
TOTAL PERMANENT POOL VOLUME = 18450CF r
TOTAL FOREBAY VOLUME 1 TOTAL PERMANENT POOL VOLUME
= 3625 CF 1 18450 CF = 19.6 % O.K. ✓
C2. Forms. Stormwater. US MCASN R. B EQ. Pond.6.8.05

06,;20/2005 17:26 4553441 PARKER & ASSOCIATES PAGE 02
___1 - - ;rAj
MCDENR
North Carolina Department of Environment and Natural Resources
127 Cardinal Drive Extension, Wilmington, NC 28405 [phone] FAX (910)3W2004
Request for Express Permit Review
FILL-IN all information below and CHECK required Permits). J)
FAX to Cameron Weaver along with a narrative and vicin� rty map of the project location,
Projects must be submitted by 9:00 A.M. on the review date, -unless prior arrangements are made.
DATE s1w U "Igo L
APPLICANT Name Cvr2&tNsQM LAwll_- CC -C-"AL pwt3ilC kS 0rfI�C -
Company LAN!` LA) S7ATE5 co, -es A11L 5"r1rTI-n! N Ew i
Address 1005 I cHAC-L E2fQ City C!M_^A tQC4 (Up 26547 County oNlL#v'
Phone 910 - 'K1- V. i 3 _ Fax Email
PROJECT NamefftLl4t-(zlz GN0 SfEV LywA7L'fEyL s 1M CA S ItFw IZI V YL-
ENGINEERICONSULTANT Name - T.vf[4`l M. tTFWAX-r
Company D 1� t A ff o (rcc . -
Address_ Q o0 6 ox 9 6 _City Su!►! V1u Zi41* County SL4)
Phone 9I9-4Ss _ Z41 Af- Fax �519- Jf E5 - 34fl _ Email Er_ fzrL. Com
❑ STREAM ORIGINATION CERTIFICATION
❑ STORMWATER ❑ Low Density [+High Density -Detention Pond ❑ Off site-�-
❑ Low Density -Curb & Gutter ❑ High Density -Infiltration
The Soils Scientist must visit the site to confirm the soils prior to submittal.
The Designer's Certification and recorded deed restrictions must be submitted.
❑ COASTAL ❑ Excavation &Fill ❑ Bridges & Cuiverts ❑ Structures Information
MANAGEMENT ❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
❑ LAND QUALITY ❑ Erosion and Sedimentation Control Plan
❑ WETLANDS (401I ❑ No Wetlands on Site (letter from COE) ❑ Wetlands Delineated/No JD
❑ Greater than 0.1 AC Wetlands Impacted ❑ Jurisdictional Determination has been done
❑ Less than 0.1 AC Wetlands Impacted ❑ Greater than 0.5 AC Wetlands Impacted
The legislation allows additional fees, not to exceed 50% of the original Express Review permit application fee,
to be charged for subsequent reviews due to the Insufficiency of the permit applications.
For DENR usa only
SUBMITTAL DATES: Fee Split for multiple permits,
SW $
CAMA $
LQS $
4N $
Total Fee Amount $

06/20/2005 17:26 4553441 PARKER & ASSOCIATES PAGE 03
1. ,,a, . .
STORMWATER MANAGEMENT NARRATIVE
BACHELOR ENLISTED QUARTERS
MARINE CORPS AIR STATION - NEW RIVER
DUNE 2005
This project consists of removing then replacing an existing BEQ Building and Parking Lot
at the corner of Demarko Street and Douglass Road at MCAS New River, Caddell Construction is
the Design/Build Contractor for the project. Edward J. Cass and Associates is the project Architect/
Engineer in conjunction with Parker and Associates providing civil engineering assistance for the
design and permit submittal/approval process.
This project is being submitted for a Redevelopment/High Density permit due to the removal
then rebuilding of BEQ Quarters and Parking Area.
As shown on the attached Stormwater Delineation Plan, the project limits is divided into 3
drainage basins.
aB su►A Collects stormwater from existing grassed areas West of the parking lot and routes it
to an existing storm drain pipe that flows off site across Douglass Road to the south. There is
no new impervious flowing to Basin A.
Basin B Collects stormwater from the new parking lot, and half of the Southern most BEQ
Building and routes it to the proposed stormwater pond.
Basin Collects stormwater from half of the Southern BEQ and all of the Northern BEQ and
pervious area to the North and routes it to the existing stormwater pond. All of the existing
area in Basin C currently,flows to the existing stormwater pond, therefore, it is' proposed to
continue routing it to the existing pond. As you can see by comparing the proposed map
with the existing features map, less total area will now go to the existing pond than, currently
goes there and less impervious area will go to the existing pond than does currently.
The total project area going to the proposed pond is 4.36 acres. The proposed impervious
areas going to the proposed pond as itemized in the Stormwater Permit application is 3.10 acres.
Therefore, the proposed project percent impervious is 71.1 %.
For additional information, see the plans and the attached Stormwater Permit Application.
e2 Forms.Stotmwater.USMCASNFt.AEQ.=.6.49.05

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06/20/2005 17:26 4553441
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06/20/2005 17:26 4553441 PARKER & ASSOCIATES PAGE 01
FXD
PARKER & ASSOCIATES, INC. 5hapiru xoria
Consulting Engineers - Land Surveyors - Land Planners
306 New Bridge Street P.O. Box 976
Jacksonville, NC 28541-0976
[phone] • Fax: [phone]
FACSIMILE TRANSMISSION COVER SHEET FAX #(910) 455,3441
TO: Cam EYU N wt"A v efL
COMPANY: _ OV/Q GI UMIA] ETA! k
FAX#:
DATE: Jui-tE Zo 2oo
FROM: Temothu M._Steruart. P.E.
RE: FQ MC A s xev, ti
REMARKS: C'AvieuO
vC-: 94,1i�7 core LE f ZC7 k-
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PCPAKe TcwvuaI -Faf- I)AvJE2T FDA- fig( p`Fkw-f AN 7W
r^,F know v-hwF I +� a ►+�l r T Yo h
NUMBER OF PAGES INCLUDING THIS SHEET):
ORIGINAL TO FOLLOW BY MAIL:
WE REQUEST THAT YOU CONFIRM RECEIPT:
15 T�
YES: NO: ✓
YES- NO:
CONMDEN"AUTY
The lnformattoncontained inthis facsFmlieisprivilegedandconlldantlal,Intended onlytbrthauseoffheaddressee. ifthemaderlsnot the Intended
recipient, you are hereby noH►led that any use Is strlcHyprohlbited. if you have recelvedthis facsimile In error, please Fralnedlatelynotify the sender
by telephone and return the original to the sender at the above address. Thank you.
C1.F0FRM9.PARKERTMS.FAX.
ENVIRONMENTAL ENGINEERING • STORM WATER MANAGEMENT • WATER AND WASTEWATER SYSTEMS
DEVELOPMENT CONSULTTNO • FEASIBILITY REPORTS • COMPUTER AIDED DX9IGN • CONSTRUCTION PLAINS