SW8890112_HISTORICAL FILE_19890125

STORMWATER DIVISION CODING SHEET
POST-CONSTRUCTION PERMITS
PERMIT NO. SW8 $ c1C)km
DOC TYPE ❑ CURRENT PERMIT
❑ APPROVED PLANS
® HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE I q got 012 5
YYYYMMDD

24 JANUARY 1989
#590112 /
CARRIAGE HILLS SUBDIVISION
DETERMINE TOTAL PROJECT AREA
315, 270 S . F.
7 . 2376 acres
%DIFF. = 7 . 2376 - 7 . 17 *100% _ .93%
7 . 2376
%DIFF = . 93%
USE 7 .17 acres AS THE TOTAL PROJECT AREA
DETERMINE THE ROAD RIGHT OF WAY
55 , 576 S.F.
1 . 28 acres
AREA OF THE ROADS WITH R.O.W. = 50 FT
ROAD SECTION = 20 FT
1 . 28 acres * 20FT/50FT
. 51 acres
DETERMINE THE AVERAGE LOT SIZE
7 . 17 - 1 . 28
16 LOTS
AVERAGE LOT SIZE = .3681 acres
. 3681 > 1/3 acre
DETERMINE THE ALLOWABLE BUILT UPON AREA FOR EACH LOT
.3681 acres * .30
. 1104 acres
4810 S.F. PER LOT

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JOHN P. MCLEAN ENGINEERING ASSOCIATES
101 MANATEE STREET
CAPE CARTERET
18 January 1989 SWANSBORO, NC 28584
RECE I V ED919-393-2129
Mr , Mark Hawes JAN 2019-09 '� k
N .C . Dept . of N .R . & C .D . \� U
7225 Wrightsville Avenue W11mingtonReotYd1 � « VU
Wilmington , North Carolina SO ?. J 1989
28403
� Zr.-I
:�:;c;,3 �kggbllz
Re : Stormwater Compliance
Carriage Hills Sub .
Onslow County , N .C .
Dear Mr . Hawes ,
Please process the enclosed stormwater exemption
request as being in compliance for Carriage Hills
Subdivision , Onslow County . The project is located off
Bannerman Mill Road (SR 1222 ) near Catherine Lake .
Enclosed you -will find a submittal form using density
limits , project drawings and sample calculations sheet .
Please advise if I can assist further .
Sincerely ,
encl : noted
cc : Sherrell Futral
Donald Scott
MUNICIPAL AND SUBDIVISION LAND DEVELOPMENT PLANNING
WATER SYSTEM DESIGN SURVEYING TOPOGRAPHY

10 January 1989
Information pertaining to Covenants & Restrictions I4 I4 u v `D
for Carriage Hills Subdivision , Catherine Subdivision , Catherine LakeID) 6 S
Community , SR 1222 , Onslow County , North Carolina �iJ�(U
JAN 2 3 1989
Total Area of development = 7 . 17 Acres D E M
PRO I #ggn� i Z-
Less (paved area of streets ) = 0 . 86 Acres
= 6 . 31 Acres ( 16 lots)
6 . 31 Ac x 25 % = 1 . 58 acres
1 . 58 acres for 16 lots = 1 . 58 x 43 , 560/16 = 4 , 293 sq ft/lot
I , �-AEP'ge _. FUTRp L , the AGENT of
Carriage Hills Subdivision , do hereby
state that the restrictive covenants for said
subdivision will contain a statement of restriction
of that area built upon , limiting the residents to
no more than 4 , 293 square feet per lot impervious
areas , and the State of North Carolina will be
beneficiary of that estrictio
Agent Date
I , j tr !t CZ�;[�_ a notary of the State
of North Carolina do hereby certify that
did appear before me and affix his signature this
s(� day of 1989 .
Witness my hand and seal :
My Commission Expiresd�Q��

RECEIVED
JOHN P. MCLEAN ENGINEERING ASSOCIATES 3AN 18 1969
Wilmington
101 MANATEE STREET
CAPE CARTERET
13 January 1989 SWANSBORO, NC 28584
919-393-2129
Mr . Mark Hawes
N .C . Department of NR & CD i
7225 Wrightsville Avenue ,�� " '7
��,N 2 3 19B9
Wilmington , North Carolina
28403
Re :Carriage Hills Sub .
Onslow County , N . C .
Dear Mr . Hawes ,
Enclosed with this note you will find project drawings
for a proposed subdivision in Onslow County . We are
applying for "Stormwater Compliance" with a maximum of 25 9
impervious areas on the property.
We are requesting the Planning Board of Onslow County
will act on this in February . Please advise if there are
matters we need to discuss .
Sincerely ,
enclosure : Density Limits Statement
Sample Calculations & Agent ' s Statement
for Covenants
Preliminary Plan
cc : Donald Scott
MUNICIPAL AND SUBDIVISION LAND DEVELOPMENT PLANNING
WATER SYSTEM DESIGN SURVEYING TOPOGRAPHY

—n
SEDIMENTATIO11 OFAD EROSION C014TROL PLAN
Specifications
for
Carriage Hills Subdivi =_. inn
Onsln,:,, Count , .
North Carolina
18 Tanua.ry 192^
Owner : Chris-Da.1e , Inc .
Donald Scott
P . O . Box 506
Richlands , N . C . 28574
Telephone : ='19-324-F�171
Prepared B : J . P .McLe.an , P .E .
101 P,Ianatee Street
Swansboro , N . C . 28534
Telephone : [phone]
`�o�nunnhiq .
�A CA Rol lot,,DEt ...........
C`20 1
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•;;otI.
Sedimentation & Erosion Control "
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"L'A
General Narrative
Carriage Hills Subdivision is approximately 7 . 2 acres
which has 50 foot frontage from Bannerman Mill P"oad ( SR
1222) near Catherine .Lake in Onslova County . The land slopes lt,
away from SR 1222 at a rate of from I to g A . The final
grading plan is se.t at a road centerline slope is generally
a. ma.ximum of 2 X. The owners plan to develop the l -and into
single family lots utilizing the water system from the i
Onslow County Water Department , There is a 4 inch diameter
main along the east RAJ of SR 1222 , and the existing SP 1222
will be bored to extend service to this pro,iect . There is
presently existing on the northside of the Chris-Dale tract , i
an access road which leads westwardly , being used by various
construction trucks which appear to be hauling sand from a
borrow pit located perhaps 2000 feet west of this site .
Adjacent Property
The land along the entire north side of this tract is
presently owned by International Paper Company . The access o�
1.F
road mentioned .abmie is actually on Chris-Dale , Inc .
property where itfintersects with SR 1222 . The road
meanders somewhat and is on International Paper Company land k: `I
near the northwest corner of the Chris-Dale , Inc . property .
Recently some widening was done on the soil road by unknown
persons and apparently permi =.s.ion was granted by
International Paper Company for this work . Chris-Dale , Inc .
pl-afrs on building the entrance r'oa.d to minimum DOT state
specifications ., The work is not intended to limit the
access to property beyond Chris-Dale , Inc . tract , but the
paved surface will extend only as far as is required to make
a. , turn to the south onto Carriage Hills. Court .
Planned Sediment Control .
Construction wi11 be minimal for 1 .6 lots. , The amount
of road construction iniiII be slightly above one acre ( 1 . 13)
There are no large scale efforts planned for moving earth .

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The material within the roadway is all that w i I I be moved.
There is minimal clearing of the trees . The land will be
graded for minimum Department of Transportation Standards,
and back:sloped from roadside ditches_. accordingly . Nei.d pipes
are planned for three place=_ as shown on the enclsed plans ,
and an application to the DOT for plan approval has been
made .
The main erosion and sediment control measures are rock
dams at the entrances of the pipes. ulithin the project
proposed.
The construction sequence is. :
1 . Preliminary clearing L grubbing, ( Feb 1989)
debris removal or burning
2 . Initial gradino completed ( Feb 1989)
- 3 . Pipe installation , swaIe ditches (Mar 1989)
4 . Install rock da.ms_. , silt fence
drainage structure complete (Mar 1989)
5. Fine grade project , install rock road base
(March 1989) t
5 . Pavement installed on rock base (March 1989)
7 . Final cleanup , Ia.nds.ca.pino a:iith seed ,
fertilizer , topsoil if needed (April 1989)
Specific Erosion Control Measures -
A. All disturbed areas will be seeded
with hulled bermuda.grass applied at a.
rate of 10 - 20 1bs.:'acre , broadcast
and fertilized with 1000-2000 lbs/
acre of 10-10-10 v, ithin 30 days
after fine grading and stabliza.tion
of disturbed areas . Lime shall be .added
at a rate of 2000 4 per acre disturbed .
R

IS•'rgril
j1 {( B. Broadcast weeping Loveyrass at a rate
of 5 — 10 lb=_:%acre , and Sericea Lespedeza
a rate of 40 lbs/a.cre .
11.M1.
C. Any areas of seed adhich fail to germinate
1 .•. after inital efforts , shall be reseeded.
I :,q Seedbed Preparation :
! 1 . Scratch shoulders or back slopes of roadway
and swales so that the surface is scarified
and seed car, find loose soil for rootbed.
2. Remove any debris including stones , stumps
rootmat , or an • obstructions aohlch would
I leave a rough surface .
<• 3 . Apply lime and fertilizer as needed to soil
I • ..F
4. Seed on a freshly prepared seedbed and cover
seed lightly with equipment such as a
:`;• cultipacker after seeding .
5 . Inspect all seeded areas and make any repairs
or reseed if necessary after suitable time
for germination within the planting season .
�•_I`L ' 6. Mulch with wheat =_.tray, or hay immediately after
soil preparation and seeding operations. Mulch
area manually , covering land slightly in order
to provide sunlight and cover simultaneously .
i ;
Sample Calculations :
I i
;.j• USE 10 year — 10 minute duration storm (NC DOT)
Wilmington ( chart included)
I �
See enclosure : I = 6 . 0 inches
1: •
!• ? USE runoff factor . %' for pavement
A.• . 5 5 forgrassed swales
p1>
0 ,

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IClcu | ations for proposed pipe at Carriage Hills Court
Rational Formula Q CIA
30 % paved surface
70 % grassed shoulder etc � .
Q = CIA ( pavement ) CIA ( grassed) Q cubic
feet/sec
^9( ^3) ( 6in) (0 .28 ac ) + , 5( ^ 7) 6in (0 .41 ac )
(half of project only)
�
� 0 ^ 25 cfs ' + .86 cfs
�
! �
1 " 11 cubic feet per second
for flow through pipe �
�
There is such a small flow that there is no reason to use
` \
Mann i no' s formula for velocity determination , consequently,
no velocity reduction is necessarx, but we plan on
installing rock at pipe inlets as shown in sketch .
`
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Maintenance Plan ; The rock dams will be checked for, ' �
siltation build up after each runoff producing rain ^ If any
accumulation accursi the material sha) l be romoved and the ��}
rock dam reconstructed. A) l seeded areas wi l l be
fertilized, reseeded as necessary / and mulched to provide a �^�o
vigorous, dense vegetative cover ^ ^ .
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