SW8960818_Historical File_19991019

State of North Carolina
Aepartment of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
Mr. Robert S. Rippy, Owner
5320 Oleander Drive
Wilmington, NC 28403
Dear Mr. Rippy:
J H
r '�I
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
October 19, 1999
Subject: Permit No. SW8 960818 Modification
Jungle Rapids
High Density Stormwater Project
New Hanover County
The Wilmington Regional Office received a complete modification to the Stormwater Management Permit
Application for Jungle Rapids on October 18, 1999. 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 960818 Modification dated October 19, 1999, for the construction of Jungle
Rapids.
This permit shall be effective from the date of issuance until October 19, 2009, 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 27611-744 7. 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].
Sincerely,
r
Rick Shiver
Water Quality Regional Supervisor
RSS/arl: S:\WQS\STORMWAT\PERMIT\960818.00T
cc: Jim Vithalani, P.E.
Tony Roberts, New Hanover County Inspections
Beth Easley, New Hanover County Engineering
Linda Lewis
Wilmington Regional Office
Central Files
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

State Stormwater Management Systems
Permit No. SW8 960818 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
Mr. Robert Rippy, Owner
Jungle Rapids
New Hanover County
FOR THE
construction, operation and maintenance of a 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 October 19, 2009 and shall be subj ect 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 on page
3 of this permit, the Project Data Sheet. The stormwater control has been designed to handle the runoff from
765,349 square feet of impervious area.
3. Approved plans and specifications for this project are incorporated by reference and are enforceable parts
of the permit.
4. The tract will be limited to the amount of built -upon area indicated on page 3 of this permit, and per
approved plans.

State Stormwater Management Systems
Permit No. SW8 9608.18 Modification
Project Name:
Permit Number:
Location:
Applicant:
Mailing Address:
Application Date:
Name of Receiving Stream/Index #:
Classification of Water Body:
If Class SA, chloride sampling results
Pond Depth, feet:
Permanent Pool Elevation, FMSL:
Total Impervious Surfaces, ftz:
Offsite Area entering Pond, ftz:
Required Surface Area, ftz:
Provided Surface Area, ftz:
Required Storage Volume, ft3:.
Provided Storage Volume, ft3:
Temporary Storage Elevation, FMSL:
Controlling Orifice:
DIVISION OF WATER QUALITY
'ROJECT DESIGN DATA SHEET
Jungle Rapids
SW8 960818 Modification
New Hanover County
Mr. Robert S. Rippy, Owner
5320 Oleander Drive
Wilmington, NC 28403
October 18, 1999
Hewletts Creek / (CFR 18-87-26)
"SA"
<500 ppm
6
16
765,349 (515,315 onsite; 250,034 offsite)
5.74 acres (70% BUA assumed), per Engineer
42,641
43,650
61,957
69,570
17.5
4"(� pipe
3

State Stormwater Management Systems
Permit No. SW8 960818 Modification
II. SCHEDULE OF COMPLIANCE
1. The stormwater management system shall be constructed in it's entirety, vegetated and operational for its
intended use prior to the construction of any built -upon surface except roads.
2. During construction, erosion_ shall be kept to a minimum and any eroded areas of the system will be rcpaired
immediately.
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 side slopes.
d. Immediate repair of eroded areas.
e. Maintenance of side slopes in accordance with approved plans and specifications.
f. Debris removal and unclogging of outlet structure, orifice device and catch basins and piping.
g. Access to the outlet structure must be available at all times.
4. Records of maintenance activities must be kept and made available upon request to authorized personnel
of DWQ. The records will indicate the date, activity, name of person performing the work and what actions
were taken.
5. Decorative spray fountains will not be allowed in the stormwater treatment system.
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.
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. The following items will require a modification to the permit:
a. Any revision to the approved plans, regardless of size.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area.
e. Further subdivision, acquisition, or sale of the project area. The project area is defined as all property
owned by the permittee, for which Sedimentation and Erosion Control Plan approval was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the approved plan.
10. The Director may determine that other revisions to the project should require a modification to the permit.
4

State Stormwater Management Systems
Permit No. SW8 960818 Modification
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. Prior to the sale of any portion of the property, an access/maintenance easement to the stormwater facilities
shall be granted in favor of the permittee if access to the stormwater facilities will be restricted by the sale
of any portion of the property.
13. The permittee is responsible for verifying that the proposed built -upon area does not exceed the allowable
built -upon area.
14. The runoff from all built -upon area on the project must be directed into the permitted stormwater control
system.
15. 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. In the event there is a desire for the facilities to change ownership, or there
is a name change of the Permittee, a formal permit request must be submitted to the Division of Water
Quality accompanied by an application fee, 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. .
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)
which have 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 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.
Permit issued this the 19th day of October, 1999.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number SW8 960818 Modification

State Stormwater Management Systems
Permit No. SW8 960818 Modification
Jungle Rapids
Stormwater Permit No. SW8 960818 Modification
New Hanover 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 ofmy 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
G1

State Stormwater Management Systems
Permit No. SW8 960818 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. The outlet/bypass structure elevations are per the approved plan.
5. The outlet structure is located per the approved plans.
6. Trash rack is provided on the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3:1.
9. The inlets are located per the approved plans and do not cause short-circuiting of the system.
10. The permitted amounts of surface area and/or volume have been provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf, and a
forebay.
14. The overall dimensions of the system, as shown on the approved plans, are provided.
cc: NCDENR-DWQ Regional Office
Tony Roberts, New Hanover County Building Inspector
7

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
This firm may be photocopied for use as an original
I. GENERAL INFORMATION
1. Applicants name (specify the name of he corporation, individual, etc. who owns the project):
Robert S. Ripp_y - - --
2. Print Owner/Signing Official's name and title (he person who is legally responsible for the facility and
its compliance):
Robert S. Rippy
3. Mailing Address for person listed in item 2 above:
5320 Oleander Drive
jCty Wilmington Stabs NC Zap: 28403
Telephone Number 910 1 7 91- 810 7
4. Project Name (subdivision, facility, or establishment name - should be consistent with project name on
plans, specifications, letters, operation and maintenance agreements, etc.):
Jungle Rapids Project (Redevelopment)
5. Location of Facility (street address):
5320 Oleander Drive
,. Wilmington COSY New Hanover
6. Directions to facility (from nearest major intersection):
From the intersection of College Road & Oleander Drive, follow
Oleander Drive east approximately 1 mile. Facility will be on
L, Llc f ly LL l+.
7. Laiitr- E 2 , 344,000 N 16 8 , 0 0 0 of facility
8. Contact person who can answer questions about the a facility:
Name Jim V i t ha l an i TelephoneNumber:. ( 910 ) 2 51- 8 5 44
II. PERMIT INFORMATION:
1. Specify whether project is (check one): New Renewal X Modification
2. If this application is being submitted as the result of a renewal or modification to an '
thee�dstatg pe;n,m S W 8 9 6 0 818 _ and its issue date (if la�own) Nov . 1 6
Form SWU-101 April 1998 Page I of 4

OCT.1e.1999, 11:35AM NCDENR WIRO
. o. aPecny the type of project (deck one),
—LOW'Density 1-.Righ Dimity
NO.752 -1LP.2I2ld
__R,edevelOp
4. Additional Project Requirmts (dieck applicable bIancs):
.�CAMA Majar ISedi= mtation jEwd(m Coated
III. 3?ROjEtT DMRMAUOr;
-Geraral Perm$
_C4 Permit
,,thew
. In tits IF14ce Provided below,
(one to twc� P, �ariae how ftrmwattK wM be treated. Also attaaM) describing stnrmwater Mampment for the pmjWt . ch a detailed nan<atn
Stormwat;er will be scouted through a wet -detention hand designed
to State standards.
11 +8\4k,x
2. Ro=water off frog= this
PrQj=t
d=s to the di
i4(
ITO��9� Y 6.9 River basin.
a 4• Pk§edBU7ttrpcu ''"jD
5. HOW �Y bash% does tiie project have??� .
6. Complete the follov'ng inf®rmatiQn for each draiage basin. If these are more than iwo
the Prole attasit an additional sheet with the information for each basin Provided edmSefo
below,inast in
ev
— -- 4a . i acres
Pit y eAna 4.94 acres
Pro oscd Iauser�tus Area
M O.M" d4rea i+otsll y t:at;a
On -mitt 5trrcts _ ...a
0 64 acres
acres
us a is d eb as diebeAa7t upon am iacludinbut fat iijaid to,
gram armor, etc.
s�
1+ 1$ l
rands, PO& AP
�. I:iowrwnthe .
analisWahmdmive? The 70% was a conservative
assum3tion for Of'fsite impervious areas: 8.2ac x 0.70= 5.74 acres
IV. ')BED RESTMC'IIONS AND PROTECTIVE COV ejANTS
Deed res4icdam and prates covenants are Mtluired to be recorded far ail Iow d ,
subdivisions per to the sale of any lot. Please see Attachment A for the '�� ��� and aa
spedfic items that =feast be recorded.
l~a=m SWTTa10I Aptil 1998
P16ft 2 of 4

By your signature below, you certify that the recorded deed restrictions and protective covenants for this project
shall include all the items required by the permit, 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. AGENT AUTHORIZATION
If you wish to designate submittal authority to another individual or firm so that they may provide
information on your behalf, please complete this section
Desgnatedagent (m&vidualorfi� _ Right Angle Engineerin P.C.
Maffrg201 N. Front Street, Suite 809
may. Wilmington NC gyp, 28401
P ( 910 ) 251-8544 Fax( 910 251-2208
VI. SUBMITTALREQUIREMENTS -
This application package will not be accepted by the Division of Water Quality unless all of the applicable
items are included with the submittal.
1. Please indicate that you have provided the following required information by signing your initials in the
space provided next to each item.
Appliiant'� Initials
• Original and one copy of the Stormwater Management Permit Application Form �9I►►""��''VV
• One copy of the applicable Supplement Form(s) for each B T (see Attachment A) _ /I �✓"
• Permit application processing fee (see Attachment A)!"
• Two copies of plans and specifications including:
• Detailed narrative description of stormw ater treatment/management
• Two copies of plans and specifications, including.
- Development/Project name
- Engineer and firm
- Legend
- North arrow
- Scale
- Revision number & date
- Mean high water line
- Dimensioned property/project boundary
- Location map with named streets or NCSR numbers
- Original contours, proposed contours, spot elevations, finished floor elevations
- Details of roads, parking, cul-de-sacs, sidewalks, and curb and gutter
- Wetlands delineated, or a note on plans that none exist
- Existing drainage (including off -site), drainage easements, pipe sizes, runoff calculations
- Drainage basins delineated
- Vegetated buffers (where required)
VIL APPLICANTS CERTIFICATION
I, (print or type name of person I SW in General h fnrmafion, item 2) RU r-1 5 I�i' Apc�
certify that the information included on this permit application form is correct, that the project will be
constructed in conformance with the approved plans, that the deed restrictions in accordance with Attachment
A of this form will be recorded with all required permit conditions, and that to the best of my knowledge the
proposed project complies with the requirements of 15A NCAC 2H .1000.
0
Date �-()') 14g
AV —
Form SWU-101 April 1998 Page 3 of 4

ATTACEEMMNT A
1. Deed Restriction Language
The following statements must be recorded for all low density projects and for all projects that involve the
subdivision and selling of lots or outparcels:
1. No more than square feet of any lot, including that portion of the right -of -may between the
edge of pavement and the front lot line, shall be covered by impervious structures including
asphalt, gravel, concrete, brick, stone, slate or similar material but not including wood decking or
the surface of swimming pools. This covenant is intended to insure continued compliance with the
stormwater permit issued by the State of North Carolina. The covenant may not be changed or
deleted without the consent of the State.
2. No one may fill in, pipe, or alter any roadside Swale except as necessary to. provide a minimum
driveway crossing.
NOTE: if lot sizes vary significantly, the owner/developer must provide an athudunent listing each lot
number, size and the allowable built -upon area for each lot.
For commercial projects that have outparcels or future development the following statements must also be
recorded:
3. The connection from the outparcel or future area into the stormwater system must be made into the
forebay such that short-circuiting of the system does not occur.
4. All built -upon area from the outparcel or future development must be directed into the permitted
stormwater control system.
5. Built -upon area in excess of the permitted amount will require a permit modification prior to
construction
For curb outlet systems, the following statement in addition to items 1 and 2 above must be recorded:
6. No one may pipe, fill in or alter any designated I00 foot long grassed swale used to meet the
requirements of NCAC 2H .1008(g).
2. Supplement Forms
The applicable supplement form(s) listed below must be submitted for each BMP specified for this project
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 Nutrient Management Strategy Supplement
3. Permit Application Fees (check made payable to NCDENR and submitted to the appropriate Regional
Office)
Type of Permit
Low Density
High Density
Other
Directors Certification
General Permit
New, Modification, or
Late Renewal
$225
$385
$225
$350
$30
Timely Renewal Without
Modification
n/a
$225
n/a
n/a
n/a
Form SWU-101 April 1998 Page 4 of 4

Permit No. �1 p
to a provi e D WO
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management PIan Review:
A complete stormwater management plan su mittal includes a wet detention basin supplement for each basin,
design calculations, plans and specifications showing all basin and outlet structure details., and a signed and
notarized operation and maintenance agreement.
I. PROJECT INFORMATION (please complete the following information):
Project Name: uncle Rapids
Contact PersoII: Jim V i t h a l a n i Phone Number: (910) 2 51- 8 5 4 4
For projects with multiple basins, specify which basin this worksheet applies to:
Basin Bottom Elevation
10.0
1L
Permanent Pool Elevation
16.0
ft.
Temporary Pool Elevation
17.5
ft.
Permanent Pool Surface Area 4 3- 6 5 0 . sq. ft.
Drainage Area 25.1
Impervious Area 17.TT 4+;-, t-
ac.
ac.
Permanent Pool Volume 171,355.
cu. ft.
Temporary Pool Volume 69,570.
cu. ft.
Forebay Volume 35,155.
cu. ft.
SA/DAl used 3.9
Diameter of Orifice 4.0 in,
Design TSS Removal 90
II. REQUIRED ITEMS CHECKLIST
(average elevation of the floor of the basin)
(elevation of the orifice)
(elevation of the discharge structure overflow)
(water surface area at the orifice elevation)
(on -site and off -site drainage to the basin)
(on -site and off -site drainage to the basin)
(combined volume of main basin and forebay)
(volume detained above the permanent pool)
(surface area to drainage area ratio)
(85% TSS removal required, see item k below)
The following checklist outlines design requirements per the Stormwater Best Management Practices manual
(N.C. Department of Environment, Health and Natural Resources, November 1995) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Form SWU-lot Rev 1/August 1998 Page 1 of

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ENGINEERING, P.C.
201 North Front Street • Suite 809 • Wilmington, North Carolina 28401 . Tel. [phone] • Fax [phone]
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FILE MODE
764 MEMORY T;;
COMMUNICATION RESULT REPORT ( OCT.18.1999 11:39AM )
NCDENR WIRO
OPTION ADDRESS (GROUP) RESULT PAGE
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
9-2512208
OK
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
P. 2/2
State of North Carolina
Depm1ment of Environment and Natural Resources
Wilmington Regional Office
James B. Hunt, Governor Bill Holman, Secretary
FAX COVER SHEET
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Date: No. f Pages:
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REMARKS
127 Cardinal Drive EYOnslon, Wilmingron, N.C. 28405.3845 Telephone [phone] Tns (910) 35Q.20Q i
An Equai opporginily AfPrmnrlve Action Employer

State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
James B. Hunt, Governor Bill Holman, Secretary
FAX COVER SHEET
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Date:
To: -Uim 1/r�l;12n,'
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FAX #: b ZS l - saos
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P. 1
COMMUNICATION RESULT REPORT ( OCT.18.1999 11:3GAM )
TTI NCDENR WIRO
FILE MODE OPTION ADDRESS (GROUP) RESULT PAGE
------------------------------------------------------------------------------------------------
7G2 MEMORY TeX 9-2512208 OK P. 2/2
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
State of North Carolina
-DegatIment of Environment and Natural Resources
Wilmington RegioxW Office
James B. Hunt, Governor
FAX COVER SHEET
Date: �1 —( --99
To:
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FAX #:DS
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Bill Holman, Secretary
No. Of Pages:
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3.q Specify the type of project (check one):
Low Density X High Density Redevelop General Permit Other
4. Additional Project Requirements (check applicable blanks):
CAMA Major X Sedimentation/Erosion Control 404 Permit
III. PROJECT INFORMATION
I. In the space provided below, summarize how stormwater will be treated. Also attach a detailed narrative
(one to two pages) describing stormwater management for the project.
Stormwater will be routed through a wet -detention pond designed
to State standards.
2. Stormwater runoff from this project drains to the CAFt FEAi River basin
3. Total Project Area: 16.9 acres
5. How many drainage basins does the project have? 1
4. Project Built Upon / 0
6. Complete the following information for each drainage basin. If there are more than two drainage basins in
the project, attach an additional sheet with the information for each basin provided in the same format as
below.
...Aator
o
Da eB�a�in 1
• r�r'ama � Iias"'
Receiving Stream Name
UT Hewletts Creek
Receiving Stream Class
S
Drainage Basin Area
25.1 acres
�
Existing Impervious* Area
4.94 acres
,9 '
Proposed Imuervious+Area
1 8 @ - - -
/ ,;. 5 -7
% Impervious* Area (total)
( t o t a 1)
O
qusurfa4'ce - d�rQa
Llra�:ge �asi�t 1
•� page $as�n"' .
On -site Buildings
0.64 acres
I !1m At.
On -site Streets
On -site Parking
2.87 acres
8 rf
Other on -site
-- _
.43
'� ''�~7
Off -site
acres
7,74
Total:
e cMCI-E_
% .5
Impery us area is defined as the built upon area including, but not Iimited to, buildings, roads, parking
areas, sidewalks, gravel areas, etc.
7. How was the off -site impervious area lined above derived? The 7 0% was a conservative
assumption for offsite impervious areas. 8.2ac x 0.70= 5.74 acres
IV. DEED RESTRICTIONS AND PROTECTIVE COVENANTS
Deed restrictions and protective covenants are required to be recorded for all low density projects and all
subdivisions prior to the sale of any lot. Please see Attachment A for the specific items that must be recorded.
Form SWU-101 April 1998 Page 2 of 4

JAN-08-1900 00:16
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q9flTANGLE
ENGINEERING, P.C.
201 North Front Street • Suite 809 . Wilmington, North Carolina 28401 . Tel. [phone] . Fax [phone]
Ms. Linda Lewis
Environmental Engineer
Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405-3845
August 17, 1999 1
oTOIIA'
E C E I V E
D
AUG 2 01999
PROD # 0eig
Subject: Additional Information Requested and Comment Answers
Stormwater Project No. SW8 960818 Modification
Jungle Rapids
New Hanover County
Dear Ms. Lewis,
In response to your letter dated, July 28, 1999, the following information has
been provided:
rr Response to NCDENR Comments
• Updated Drawings (Dated 08/17/99) (2 Sets)
Thank you for your consideration with this project. If you have any questions,
please give me a call at [phone].
Sincerely,
Jim Vitha
President

Stormwater Project No. SW8 960818
Responses to NCDENR comments are in order, same as Ms. Linda Lewis' letter dated,
July 28, 1999.
1. Dimensions have been added for existing features on the site such as buildings,
walks, track, pools, parking lots, and concrete deck area on the site.
2. Impervious areas on the site have been hatched to better delineate between
pervious and impervious surfaces.
3. Site plan has been modified to show flow arrows of storm drainage into the pond.
All existing pervious surfaces drain to the existing pond and the area of the
existing pond will be graded to sheet flow into the new pond forebay #1.
Proposed contours are for grading of the new pond and the area of the existing
pond. All other contours across the site are existing. Spot elevations shown are
of existing surfaces.
STORMWATER
E C E! V E
AUG 2 01999
D
D E M
PROD #

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
July 28, 1999
Mr. Robert Rippy
5320 Oleander Drive
Wilmington, NC 28403
F4CDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 960818 Modification
Jungle Rapids
New Hanover County
Dear Mr. RiPPy:
The Wilmington Regional Office received previously requested information for the Stormwater
Management Permit Application for Jungle Rapids on June 18,1999. 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. Please provide the new dimensions for all buildings, walks, Go-cart track, concrete deck area
under the slides, and parking lots. The development now called "existing" is different than what
was permitted as proposed in 1996.
2. Please make it clear on the plan what is impervious and what isn't, especially in the area of the
Go-cart track and slides. This information is needed because the area is laid out different that
what was approved in 1996.
3. As previously requested, please provide sufficient proposed spot elevations, contours and flow
arrows to support the requirement that all runoff be directed into the pond. The grading plans
as submitted still do not provide sufficient information to permit.
127 Cardinal Dr. Ext, Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

Mr. RiPpy
July 28, 1999
Stormwater Project No. SW8 960818 Modification
----------------------------------------------
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to August 28, 1999, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including the
application fee. 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 ofNCGS 143-215.1 and is subject to enforcement action
pursuant to NCGS 143-215.6A.
If you have any questions concerning this matter please feel free to call me at [phone].
RSS/arl:
cc:
Sincerely,
Linda Lewis
Environmental Engineer
S:\WQS\STORMWAT\ADDINFO\960818.JUL
Linda Lewis
Jim Vithalani, P.E.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

t11 t (N I! 7! /I...0'
°A� STUhMWATER
10 June, 1999
169 - D E,C P v r�
Jungle Rapids Project (Redevelopment)
4! *...... P��%6,�'t�grt Moving of Stromwater Detention Pond JUN 1 81999 V
.,,�. Wilmington, N.C.
D E M
PROJ #
1. Project Description: Mr. Bob Rippy, owner of Jungle Rapids has purchased 6.8
acres of property adjoining his existing 10.1 acres. The property was bought with the
intentions of expansion of the current Jungle Rapids facility initially, with additional
commercial development built in the future. In this current phase of construction, Mr.
Rippy would like to build a new stromwater detention pond large enough to handle all
current and future site drainage requirements. The plans are to replace the existing
detention pond with a new pond located in the back southeastern corner of his new
property. During this work phase, 3.8 acres of the total 16.9 acres will be disturbed.
The. Jungle Rapids property is located on Oleander Drive at the intersection (southwest
corner) of Englewood Drive in Wilmington, N.C. A location map is attached.
2. Site Description: The site is broken into two distinct pieces. The existing Jungle
Rapids property is a commercial site with existing facilities. This parcel is 10.1 acres in
area. The existing parcel i� a very flat area with drainage being routed by both piping
and grades. The new parcel is a very flat grassy area with slopes generally less than
2%. This new land measures at 6.8 acres. There is no vegetation other than grass and
a few trees along the borders on this site. The soils on this site appear to be uniformly
graded sands. Currently, no major signs of existing erosion were visible during the site
visits.
All runoff leaves this site draining to the eastern side of the property. Runoff
from the original Jungle Rapids properfir is routed through an existing stormwater pond
and released to a ditch on the southeastern side on the new parcel. The runoff from the
new property drains to a ditch along Englewood Drive.
3. Background Information:
Existing Property:
New Property:
Total Property:
Total Area: 10.1 acres
Existing % Impervious: 48.9%
Total Area: 6.8 acres
Total Area: 16.9 acres
** Pond to be designed to handle runoff from the total site assuming a % impervious of
70%. This is a conservative assumption that will ensure the pond will have enough
capacity to allow Mr. Rippy maximum flexibility in future development of his property.

4. Offsite Drainage:
The area north of Oleander includes approximately 8.2 acres of area that is currently
routed through a 30724" culvert onto the Rippy property. (3.0" diameter on the north
side of Oleander and 24" diameter on the south side) Currently this runoff is piped
through the site without going through the existing detention pond. With this site
modification, we plan to route this runoff through our proposed detention pond.
Because the existing topography is dated, it would be difficult to develop the area
parameter to calculate the offsite drainage. Since all the water passes through the 24
diameter RCP, we used Manning's Equation assuming the full -flow to calculate runoff
(Q) from the area across Oleander Drive. Using Manning's Equation, it was calculated
that the offsite runoff through this pipe is set at a maximum of 21.1 cfs.
5. Onsite Drainage:
To calculate stormwater runoff for the Rippy property, SCS.Hydrograph Method was
used. Using Hydroflow Hydrographs Program, predevelopment and post development
flows were calculated for the Rippy site. This program was used to model the
stormwater detention system and check how effective it would be in controlling the
stormwater runoff. Runoff calculations are shown in the attached information. The
proposed detention pond was designed to meet the following criteria:
6. Regulatory Requirements:
State of North Carolina: Provide temporary storage above a permanent design pool
to store a 1" storm across the drainage basin.
Our pond is set with a dsnth of 6 feet and a permanent pool elevation of 1 C, Let. Us;-
--the assumed maximum % impervious area of 70%, the required volume for the State's
1" storm calculated to be approximately 62,000 cubic feet. The provided volume in the
Temporary Storage Pool equals 69,570 cubic feet. The outlet structure must be sized
to release this design pool between 2 and 5 days. All inflow to the pond must enter
through a forebay. Calculations are provided.
2

City of Wilmington: The City requires that the facility be designed for the nun -off
produced by the 10-year storm and checked for the 50-year storm. The peak outflow
(10-yr post -development flow) from the site must not exceed the maximum ,
predevelopment outflow for the site. Results must be checked by routing the design
storms through the facility. Because the drainage area the proposed pond will release
to may have tailwater conditions at times, the routings were done with and without
tailwater downstream of the pond outlet. Calculated results are as follows:
Pre -Development Post -Development
10 year storm: 34.6 cfs 28.1 cfs
Routed Pond Elevations:
10yr w/ No Tailwater: 19.47 ft 50yr w/ No Tailwater: 20.16 ft
10yr w/ Tailwater: 19.93 ft 50yr w/ Tailwater: 20.37 ft
New Hanover County: Since this pond will also serve as a sedimentation pond during
all future construction phases, sedimentation storage must be provided. The pond
must also be designed to handle the 10 year design storm.
For this phase of work, approximately 7,000 cubic feet of sediment storage is required.
This pond will have in excess of 160,000 cubic feet of potential sediment storage.
Please refer to the attached calculations for more detailed information.
3

7. Construction Schedule:
7.1. Obtain plan approval and other applicable permits.
7.2. Hold preconstruction conference at least one week prior to starting construction.
7.3. Install temporary gravel construction entrance.
7.4. Install sediment fencing as specified.
7.5. Install detention pond as shown on the plans.
7.6. Rough grade site. Any stockpiled soils shall be protected from erosion by using
sediment fencing.
7.7. Complete final grades for the site and stabilize with base course gravel in
proposed parking area.
7.8. Install riprap outlet protection.
7.9. Vegetate and mulch channel and any other disturbed areas.
7.10. All erosion and sediment control practices will be inspected weekly by the
contractor and after rainfall events. Needed repairs will be made immediately.
7.11. After site is stabilized, remove all temporary measures (sediment fencing, etc.)
and install additional permanent vegetation as required.
4

8. Maintenance Plan:
8.1. All erosion and sediment control practices will be checked for stability Ond
operation following every runoff -producing rainfall, but in no case less than once every
week. Any needed repairs will be made immediately to maintain all practices as
designed.
8.2. Sediment Fencing: Should the fabric of a sediment fence collapse, tear,
decompose, or become ineffective, replace it promptly. Remove sediment deposits
when it becomes about 0.5 feet at the fence to provide adequate storage volume for the
next rain and to reduce pressure on the fence.
8.3. Stormwater Detention Pond:
8.3.1. After every significant runoff producing rainfall and at least monthly, inspect the
wet detention basin for sediment accumulation, erosion, trash accumulation, grass
cover, and general condition. Check and clear the orifice of any obstructions such that
drawdown of the temporary pool occurs within 2 to 5 days.
8.3.2. Repair eroded areas immediately, re -seed as necessary to maintain good
vegetative cover, mow vegetative cover to maintain a maximum height of six inches,
and remove trash as needed. Inspect and repair the collection system (i.e. catch
basins, piping, swales, riprap, etc.) quarterly to maintain proper functioning.
8.3.3. Remove accumulated sediment from the wet detention basin system when
depth is reduced to 75% of the original design depth. Removed sediment shall be
disposed of in an appropriate manner and shall not be handled in a manner that will
adversely impact water quality.
The original design depth is 10.0 Feet MSL.
The sediment removal benchmark depth is 14.5 Feet MSL.
8.3.4. Remove cattails and other indigenous wetland plants when they cover 75% of
the basin surface. These plants shall be encouraged to grow along the basin
perimeter.
8.3.5. All components of the wet detention basin system shall be maintained in good
working order.
8.4. All seeded areas will be fertilized, reseeded as necessary and mulched according
to specifications in the vegetative plan to maintain a vigorous, dense vegetative cover.
5

9.0 Construction Specifications:
9.1. Sediment Fencing: Sediment fencing specifications are shown on the attached
plans.
9.2. Detention Pond: Wet detention pond specifications are shown on the attached
plans.
9.3. Temporary Construction Entrance: Temporary construction entrance
specifications are shown on the attached plans.
9.4. Outlet Protection: Outlet protection specifications are shown on the attached
plans.
9.5. Land Grading:
9.5.1. Finished land surfaces will be graded as shown on site development plan.
9.5.2. Topsoil will be removed for areas to be graded and filled and it will be stockpiled
in a location selected by the contractor. Any stockpiled soil must be protected
from erosion by using sediment fencing.
9.5.3 Areas to be filled will be cleared and grubbed.
9.5.4. Fill will be placed in layers not to exceed 9" and compacted as required in the
specifications for the development plan.
9.5.5. Road and parking surfaces will be sloped as shown on site development plan.
9.5.6. As soon as final grades are reached the graded areas will be stabilized in
accordance to the vegetative plan.
0

10.0 Vegetative Plan:
10.1 Temporary Seeding:
• Late Spring and Early Fall (Dec. 1 - Apr. 15):
Seeding Mixture
Species
Rye (grain)
Annual lespedeza
Rate (lb./acre)
120
50
Soil Amendments: Follow recommendations of soil tests or apply 2,000
lb./acre ground agricultural limestone and 750 lb./acre 10-10-10 fertilizer.
Mulch: Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt,
netting, or mulch anchoring tool. A disk with set with blades set nearly straight
can be used as a mulch anchoring tool.
Maintenance: Refertilize if growth is not fully adequate. Reseed, refertilize and
mulch immediately following erosion or other damage.
• Summer (Apr. 15 -Aug. 15 :
Seeding Mixture
Species
German millet
Rate (lb./acre)
40
Soil Amendments: Follow recommendations of soil tests or apply 2,000
lb./acre ground agricultural limestone and 750 lb./acre 10-10-10 fertilizer.
Mulch: Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt,
netting, or mulch anchoring tool. A disk with set with blades set nearly straight
can be used as a mulch anchoring tool.
Maintenance: Refertilize if growth is not fully adequate. Reseed, refertilize and
mulch immediately following erosion or other damage.

10.1. Temporary Seeding (Continued
• Fall (Aug. 15 - Dec. 30L
Seeding Mixture
Species Rate (lb./acre)
Rye (grain)
'120
Soil Amendments: Follow recommendations of soil tests or apply 2,000
lb./acre ground agricultural limestone and 1,000 lb./acre 10-10-10 fertilizer.
Mulch: Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt,
netting, or mulch anchoring tool. A disk with set with blades set nearly straight
can be used as a mulch anchoring tool..
Maintenance: Refertilize if growth is not fully adequate. Reseed, refertilize and
mulch immediately following erosion or other damage. Topdress with 50 lb./acre
of nitrogen in March.
i
0

10.2. Permanent Seeding:
• All areas except for Channels:
Seeding Mixture
Species Rate (lb./acre)
Sericea lespedeza 30
Common Bermudagrass 10
German millet 10
Seeding notes:
• Where a neat appearance is desired, omit sericea.
• Use common Bermudagrass only on isolated sites where it cannot become a
pest. Bermudagrass may be replaced with 5 lb./acre centipedegrass.
Soil Amendments: Apply lime and fertilizer according to soil tests, or apply
3,000 lb./acre ground agricultural limestone and 500 lb./acre 10-10-10 fertilizer.
Mulch: Apply 4,009 lb./acre straw. Anchor straw by tacking with asphalt,
netting, or mulch anchoring tool. A disk with set with blades set nearly straight
can be used as a mulch anchoring tool.
Maintenance: Refertilize the following April with 50 lb./acre nitrogen. Repeat as
growth requires. May be mowed only once a year. Where a neat appearance is
desired, omit sericea and mow as often as desired.

10.2. Permanent Seeding (Continued):
Seeding for Detention Pond Embankment and Emergency Spillway (April - July):
Seeding Mixture
Species
Common Bermudagrass
Rate (lb./acre)
40-50 (1-2 ib./1000 sq. ft.)
**(Owner May Choose to Sod Pond for Quick Coverage)
Soil Amendments: Apply lime and fertilizer according to soil tests, or apply
3,000 lb./acre ground agricultural limestone and 500 lb./acre 10-10-10 fertilizer.
Mulch: Apply 4,000 lb./acre straw and anchor straw by stapling netting over the
top of straw. Mulch and anchoring materials must not be allowed to wash down
slopes where they clog drainage devices.
Maintenance: A minimum of 3 weeks is required for establishment. Inspect and
repair mulch frequently. Refertilize the following April with 50 lb./acre nitrogen.
i
10

l
NNGLE RAPIDS SITE LOCATION MAP
Mag 14.00
Fri Mar 27 08:56 1998
Scale 1:37,500 (at center)
2000 Feet
r�
1000 Meters
� � • nn�cta w►rms
Secondary SR/Road/Hwy Ramp Park/Reservation
State Route
O Locale
Trail
t Cemetery
® US Highway
Population Center
+ Railroad
Land
Point of Interest
Water
® Geographic Feature
River/Canal
Hospital

TANGLE
ENGINEERING, P.C.
201 North Front Street . Suite 809 • Wilmington, North Carolina 28401 . Tel. [phone] . Fax [phone]
Stormwater Project No. SW8 960818
Responses to NCDENR comments are in order, same as Ms. Linda Lewis' letter
dated, May 11, 1999.
1. The "permitted pond" was the "previously existing pond" which was to be
modified for "water quality requirements" and "physical shape and
dimensions". The construction of the water quality measures (forebay etc.)
were constructed as permitted. My letter of March 05, 1999, referred to the
modifications for physical shaping of the pond, i.e. backfilling portion of
the pond, tree removal and reshaping of the slope, which were not
complete.
2. The forebay volume has been recalculated based on 20% of the Permanent
Pool Volume. As shown in the calculations, the results are as follows:
Permanent Pool Volume = 173,355 cubic feet
Required Forebay Volume = 34,671 cubic feet
Provided Forebay Volume = 35,155 cubic feet
3. Calculations are Attached:
The requested information is as follows:
Permanent Pool Elevation =16.0 Ft. MSL
Req. Permanent Pool Surface Area = 42,641 sq. ft.
Provided Perm. Pool Surface Area = 43,500 sq. ft.
Permanent Pool Volume = 173,355 cubic feet
Temporary Pool Elevation = 17.5 Ft. MSL
Temporary Pool Surface Area = 49,110 sq. ft.
Req. Temporary Pool Storage = 62,000 cubic feet
Provided Temp. Pool Storage = 69,570 cubic feet
siuHMWATER
E C E I V E
JUN 1 81999
D
D E M
PRO.i #
4. The Temporary Pool is set between elevations 16.0 and 17.5 feet in the
detention pond.. The storage volume in this pool is 69,570 cubic feet. This
is slightly above the required volume of 62,000 cubic feet. The orifice size
has been checked to see that it would release this additional storage
between 2 — 5 days. It was calculated that a four inch diameter orifice
meets these requirements.

5. The contours of the detention pond were adjusted to add approximately
300 square feet to the permanent pool surface area. As stated above, the
permanent pool surface area is 43,650 square feet. This is greater than the
required 42,641 square feet.
S. As noted on the original set of plans (Sheet 1), no wetlands exist on this
property.
7. Sheet 1 of the plans includes all required grading information.
8. Done.
9. This was noted on Sheet 1 of the original drawings. It is stated that before
new construction can start, new erosion control and stormwater permits
must be approved prior to construction.
10. Changes made.
11. Mr. Rippy's name is now printed in addition to being typed.

PgUTANGLE
ENGINEERING, P.C.
201 North Front Street . Suite 809 • Wilmington, North Carolina 28401 . Tel. [phone]" e
June 17, 1999
Ms. Linda Lewis
Environmental Engineer
Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, NC 28405-3845
Subject: Additional Information Requested and Comment Answers
Stormwater Project No. SW8 960818 Modification
Jungle Rapids
New Hanover County
Dear Ms. Lewis,
JUN 18 1999
(910) 1-2208
In response to your letter dated; May 11, 1999, the following information has
been provided:
• Response to NCDENR Comments
• Updated Permit Application Pages
• Updated Drawings (Dated 06/10/99)(2 Sets)
• Updated Narrative and Calculations (Dated 06/10/99)(2 Sets)
Thank you for your consideration with this project. If you have any questions,
please give me a call at [phone].
Sin rely,
Jim ni,
President

'
TANGLE JUN 14 1999
ENGINEERING. P.C. �"'•
201 North Front Street • Suite 809 • Wilmington, North Carolina 28401 • Tel. [phone] • Fax (91001 5%2
June 11, 1999
Ms. Linda Lewis
Environmental Engineer
NCDENR
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
Subject: Stormwater Project No. SW8 960818
Modification Jungle Rapids
New Hanover County
Dear Ms. Lewis,
Reference is made to your, letter dated May 11, 1999 subject as above,
requesting additional information. Reference is also made to Bob Keistler's conversation
with you on June 10, 1999.
I really appreciate you allowing us an additional week to appropriately respond to
your comments.
Sin rely,
e
Jim Vith ni, P. '
President
FAX C-D
Ms
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a"�
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Hydrograph Summary Report Pic - Le����P"'`^t FV,4w) Page 1
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Volume
(acft)
Return
period
(yrs)
Inflow
hyd(s)
Maximum
elevation
(ft)
Maximum
storage
(cuft)
Hydrograph
description
1
SCS Runoff
20.7
6
732
1.97
10
—
Oleander Prope
2
Reach
19.2
6
738
1.97
10
1
Route Oleander
3
SCS Runoff
19.3
6
756
3.45
10
—
—
Rippy Property
4
Combine
34.6
6
744
5.42
10
2 + 3
Combine Rippy
Proj. file: RIPPRE.GPW
OF file: WILNC.IDF
Run date: 06-17-1999

Hydrograph Summary Report (R4 be,jzA�spw►en`� R-3,r Page 1
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Volume
(aeft)
Return
period
(yrs)
Inflow
hyd(s)
Maximum
elevation
(ft)
Maximum
storage
(cuft)
Hydrograph
description
1
SCS Runoff
20.7
6
732
1.97
10
—
—
Oleander Prope
2
Reach
19.2
6
738
1.97
10
1
—
Route Oleander
3
SCS Runoff
78.9
6
726
7.49
10
—
—
Rippy Property
4
Combine
92.6
6
732
9.46
10
2 + 3
—
Combine Oleand
5
SCS Runoff
110.3
6
726
10.64
5u
—
—
Rippy Property
6
Combine
122.6
6
732
12.61
50
5 + 2
—
—
Combine Rippy
7
Reservoir
28.1
6
756
9.46
10
4
19.47
189160
Route 10yr w/
8
Reservoir
41.2
6
756
12.61
50
6
20.16
254256
Route 50yr w/
9
Reservoir
16.4
6
768
6.78
10
4
19.93
229602
Route 10yr w/
10
Reservoir
52.9
6
750
9.93
50
6
20.37
278777
Route 50yr w/
Proj. file: BOB.GPW
OF file: WILNC.IDF
Run date: 06-17-1999

po�) � KI T%(-Vy%& C j jh
Stage / Storage
5
4-
3-
Stage (ft)
2- ,00/ Z/
1
0
0
i
10000U 2000UU 30000U
Storage (cult)
4001
\ _j (V7f �kSL)

P,j 1,j {-Nrvm 1 ► d'r\
5
A
Stage / Discharge
100 150
Discharge (cfs)
8 zj (iFf P,�)

Reservoir Report
Page 1
Reservoir No. 1
Test 1 with No Tailwater
Culvert / Orifice Structures
Weir Structures
[A] [B]
[C]
[A]
[B]
[C]
Rise (in) = 18.0 4.0
0.0
Crest Len (ft) =
14.0
50.0
0.0
Span (in) = 18.0 4.0
0.0
Crest El. (ft) =
17.50
20.00
0.00
No. Barrels = 2 1
0
Weir Coeff. =
3.30
3.00
3.00
Invert El. (ft) = 16.00 16.00
0.00
Eqn. Exp. =
1.50
1.50
1.50
Length (ft) = 45.0 0.0
0.0
Multi -Stage =
Yes
No
No
Slope (%) = 0.25 0.00
0.00
N-Value = .024 .013
.013
Orif. Coeff. = 0.60 0.60
0.60
Multi -Stage = ----- Yes
No
Tailwater Elevation
= 0.00 ft
Note: All outflows have been analyzed under inlet and outlet control.
Stage / Storage / Discharge Table
Stage
Storage
Elevation
Culy. A
Culy. B
Culy. C Weir A
Weir B Weir C
Discharge
(ft)
(cuft)
(ft)
(cfs)
(cfs)
(cfs) (cfs)
(cfs) (cfs)
(cfs)
0.0
00
16.00
0.00
0.00
--- 0.00
0.00 ---
0.00
0.1
4,546
16.10
3.81
0.09
--- 0.00
0.00 ---
0.09
0.2
9,091
16.20
4.60
0.13
--- 0.00
0.00
0.13
0.3
13,637
16.30
6.59
0.16
-- 0.00
0.00 ---
0.16
0.4
18,183
16.40
7.61
0.20
--- 0.00
0.00 ---
0.20
0.5
22,729
16.50
8.51
0.23
--- 0.00
0.00 ---
0.23
0.6
27,274
16.60
9.32
0.28
--- 0.00
0.00 ---
0.28
0.7
31,820
16.70
10.07
0.31
--- 0.00
0.00 --
0.31
0.8
36,366
16.80
10.76
0.33
-- 0.00
0.00 ---
0.33
0.9
40,911
16.90
11.42
0.36
--- 0.00
0.00 --
0.36
1.0
45,457
17.00
12.03
0.38
--- 0.00
0.00 ---
0.38
1.1
50,368
17.10
12.62
0.41
--- 0.00
0.00 ---
0.41
1.2
55,278
17.20
13.18
0.43
--- 0.00
0.00 --
0.43
1.3
60,189
17.30
13.72
0.45
--- 0.00
0.00 ---
0.45
1.4
65,100
17.40
14.24
0.47
--- 0.00
0.00 ---
0.47
1.5
70,011
17.50
14.74
0.49
-- 0.00
0.00 ---
0.49
1.6
74,921
17.60
15.69
0.50
1.46
0.00 ---
1.96
1.7
79,832
17.70
16.58
0.52
--- 4.13
0.00 ---
4.65
1.8
84,743
17.80
17.44
0.53
--- 7.59
0.00 --
8.12
1.9
89,653
17.90
18.25
0.50
--- 11.69
0.00 ---
12.19
2.0
94,564
18.00
19.02
0.41
--- 16.33
0.00 --
16.75
2.1
99,847
18.10
19.77
0.26
--- 21.47
0.00 --
19.77
2.2
105,130
18.20
20.49
0.00
--- 27.06
0.00 --
20.49
2.3
110,413
18.30
21.18
0.00
--- 33.06
0.00 ---
21.18
Continues on next page...

Test 1 with No Tailwater
Stage / Storage / Discharge Table
Page 2
Stage Storage
(ft) (cuft)
Elevation
(ft)
Culv. A
(cfs)
Culy. B
(cfs)
Culy. C Weir A
Weir B Weir C
Discharge
(cfs) (cfs)
(cfs) (cfs)
(cfs)
2.4
2.5
115,696
120,979
18.40
18.50
21.86
22.51
0.00
0.00
39.45
0.00 --
21.86
2.6
2.7
126,262
131,545
18.60
18.70
23.14
0.00
_-_-_-
46.20
53.30
0.00 ---
0.00 ---
22.51
2.8
136,828
18.80
23.76
24.36
0.00
0.00
- 60.73
0.00 --
23.14
23.76
2.9
3.0
142,111
147,394
18.80
19.00
24.36
0.00
--- 68.48
---
0.00 ---
---
24.36
3.1
156,262
19.10
25.52
26.08
0.00
0.00
4.87
84.87
0.00
0.00 ---
24.95
25.52
3.2
3.3
165,130
173,997
19.20
19.30
26.63
0.00
_-_-
93.50
102.40
0.00 ---
0.00 ---
26.08
3.4
182,865
19.40
27.17
27.70
0.00
0.00
111.57
0.00 ---
26.63
27.17
3.5
3.6
191,733
200,601
19.50
19.60
28.22
0.00
_-_-_-
121.00
--- 130.67
0.00 --
0.00 ---
27.70
3.7
209,469
19.70
28.73
29.22
0.00
0.00
--- 140.60
0.00 ---
28.22
28.73
3.8
3.9
218,336
227,204
19.80
19.90
29.72
0.00
--- 150.76
161.15
0.00 ---
0.00 ---
29.22
4.0
236:072
20.00
30.20
30.67
0.00
0.00
_---
- 171.77
0.00 --
29.72
30.20
4.1
4.2
247,572
259:072
20.10
20.20
31.14
0.00
--- 182.62
--_- 193.69
0.00 ---
4.74 ---
30.67
4.3
270,572
20.30
31.60
32.06
0.00
0.00
204.97
13.42 ---
35.89
45.02
4.4
4.5
282,072
293,572
20.40
20.50
32.51
0.00
_-
- 216.46
240.16
24.65 ---
56.71
4.6
4.7
305:072
20.60
32.95
33.39
0.00
0.00
_-_-_-
240.06
53.03 ---
53.03 ---
70.46
85.98
4.8
316,572
328,072
20.70
20.80
33.82
0.00
_--- 252.17
- 264.46
69.71 ---
87.85 ---
103.10
4.9
339,572
20.90
34.24
34.66
0.00
0.00
276.96
107.33 ---
121.67
141.57
5.0
351,072
21.90
34.66
0.00
_~ 289.64
302.51
128.07 ---
162.74
150.00 ---
185.08
r

Right Angle Engineering, P.C.
201 North Front Street, Suite 809 • Wilmington, N.C. , 28401 • [phone] • Fax: [phone]
June 9, 1999
Ms. Linda Lewis
Environmental Engineer
Division of Water Quality
127 Cardinal Drive Ext.
Wilmington, N.C. 28405-3845
Subject: Request of Time Extension on Additional Information
Stormwater Project No. SW8 960818
Jungle Rapids
New Hanover County
Dear Ms. Lewis:
In your letter dated, May 11, 1999, you made a request for additional information
on the above referenced stormwater project. It was stated that the requested
information should be received in your office prior to June 11, 1999. We would like to
request a one week extension on that deadline. Some design changes have been
made based on information learned'during the Stormwater Seminar given by NCDENR
in Wilmington on June 2, 1999.
If allowed, the requested information will be submitted to your office prior to June
18, 1999. Thank you for your consideration in this matter.
Sincerely, j
Ro ert W. Keistler, P.E.
Civil Engineer
[rwk/ds]

Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Division of Water Quality
May 11, 1999
Mr. Jaman Vithalani, P.E.
Right Angle Engineering
201 N. Front Street, Suite 809
Wilmington, NC 28401
�r
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: ACKNOWLEDGEMENT OF RECEIPT AND
REQUEST FOR ADDITIONAL INFORMATION
Stormwater Project No. SW8 960818 Modification
Jungle Rapids
New Hanover County
Dear Mr. Vithalani:
The Wilmington Regional Office received a modification to the Stormwater Management Permit
Application for Jungle Rapids on February 23, 1999. A preliminary review of that information has
determined that the application is not complete. The following information is needed to continue the
stormwater review:
Has the previously permitted pond been constructed? Your letter of March 5, 1998, indicated
that the pond had not yet been modified, even though the project was under construction. If
the pond has not been constructed per the approved plans, Mr. Rippy is in violation of the
permit, and enforcement action may be pursued through the Attorney General's Office for
failing to build the permitted facility in accordance with the approved plan.
2. The required volume in the forebay is not based on 20 % of the 1 " storage volume. Please
recalculate the forebay volume based on 20 % of the total storage volume in the pond from
the bottom to the permanent pool elevation (called the Permanent Pool Volume on the
supplement).
3. It is very unusual to find a pond that provides exactly the minimum surface area and volume
required. Please list the surface areas actually provided in the pond, not just the minimum
areas required, and recalculate the area and volume actually provided in the proposed pond.
4. As above, the orifice size must be based on the actual volume available in the pond between
the permanent pool and the storage pool, (called the Temporary Pool Volume on the
supplement) not just the required minimum. Please revise the size as needed. Based on the
permanent pool dimensions provided, the volume provided in the pond is considerably more
than 62,000 cubic feet.
5. Based on the permanent pool dimensions provided, only 42,350 square feet of surface area
has been provided at the permanent pool, about 300 square feet short of the required
minimum. Please provide sufficient surface area in the pond.
6. Delineate all wetlands on site, or note on the plans that none exist.
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone 910-39"900 FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycied/10% post -consumer paper

Mr. Vithalani
May 11, 1999
Stormwater Project No. SW8 960818 Modification
7. Please provide two sets of detailed grading plans.
8. Please seal, sign and date the design calculations.
9. It is perfectly OK to design the pond for 70 % impervious, but please keep in mind that plans
for any future onsite impervious area above that shown on the application (5.97 acres) must
be submitted and approved prior to construction.
J 10. The O&M portion of the supplement appears to indicate that the pond is 10' deep. Please
specify depths in the blanks provided. You may list elevations off to the side in parentheses,
labelled in Feet Mean Sea Level.
11. Mr. Rippy did not print his name in the appropriate blank on the signature page. Since I
cannot read the signature, please verify that Mr. Rippy did indeed sign this application.
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to June 11, 1999, or the application will be
returned as incomplete. The return of a project will necessitate resubmittal of all required items, including
the application fee. The Division is allowed 90 days from the receipt of a completed application to issue the
permit.
The construction of any impervious surfaces associated with this project prior to receipt of the
stormwater permit is considered a violation of NCGS 143-215.1, and is subject to enforcement action.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
RSS/arl: S:\WQS\STORMWAT\ADDINFO\960818.MAY
cc: Linda Lewis
Robert Rippy
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10% post -consumer paper

P�,5HTANGLE
ENGINEERING, P.C.
201 North Front Street . Suite 809 . Wilmington, North Carolina 28401 . Tel. [phone] . Fax [phone]
February 18, 1999
Ms. Linda Lewis
NC DENR
Division of Environmental Management
Water Quality Section
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Re: Request for Stormwater Management Permit,
Jungle Rapids Addition,
Stormmwater Project No. SW8 960818,
New Hanover County.
Dear Ms. Lewis,
Please find enclosed three (3) copies of the plans, calculations, application for
the above facility located at 5320 Oleander Drive, Wilmington and a check for $385.00.
The project basically consists of relocating the existing storm drainage facility including_
the eAsting pond in the recently acquired adjoining property.
Should you have any question or comments please feel free to contact at 251-
8544.
Sincerely,
RECETIV Jaman (Jim) Vi ani, P.E.
F E B 2 3 i9��
�Y:

TANGLE tU CE D
ENGINEERING, P.C. MAR U 6 1998
201 North Front Street • Suite 809 . Wilmington, North Carolina 28401 . Tel. [phone]IMS 19101251-2208
March 05, 1998
Ms. Linda Lewis
Water Quality Section
Division of Environmental Management
127 Cardinal Drive Extension
Wilmington, NC 28405-3845
Subject : Permit No. SW8960818
Jungle Rapids
5320 Oleander Drive
Wilmington, NC 28403
Dear Linda,
The purpose of this letter is to follow-up on my telephone call on February 20,
1998 and message I left on your answering machine.
The above referenced project is still under construction. The existing pond at
Jungle Rapids has not been modified. Recently, the owner has purchased an adjoining
parcel of land, approximately 6 acres. The Owner plans to relocate the pond on the
newly acquired parcel and size it to accommodate storm water from both the parcels.
Linda, can we modify the existing permit? Or do we need to reapply for a new
permit? Any comment on relocation?
Sincerely,
Jim Vithalani, P. =
President