SW8931114_HISTORICAL FILE_19940309

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 ' 1')my
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
© HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
qq-{ p300)
YYYYMMDD

PARKER & ASSOCIATES, INC.
Consulting Engineers - Land Surveyors - Land Planners
306 New Bridge Street - P.O. Box 976
Jacksonville, NC 28541-0976
[phone] - Fax: [phone]
February 25, 1994
Ms. Linda Lewis U ( 91it�i W
Environmental Engineer
Division of Environmental Management FEB 9 $ 1994
127 Cardinal Drive Extension
Wilmington, North Carolina 28405 „............ .....
RE: Stormwater Project No. 931114
Whitewood Village
Onslow County, NC
Dear Ms. Lewis:
This letter is in response to your letter to me dated
November 30, 1993 concerning the above referenced project.
1. The street cross-section detail shown on Sheet 8 of 10 is
DOT's typical standard street detail. All of the roads
in this project are considered "Local Residential" and
will have 50 foot right-of-ways and Maplecrest Drive will
have 20 foot wide pavement and the Cul-De-Sac roads will
have 18 foot wide pavement as shown on the plans.
2. These roads are being designed to meet DOT's standards
and are intended to be dedicated to them upon completion
of construction. DOT has responded that the roadside
ditch slopes should be 3:1, if required by your office.
Therefore, we have revised our Street Detail to show 3:1
slopes. See the enclosed copy of a letter from Donnie
Huffman dated February 21, 1994.
Please find enclosed three copies each of revised sheets 2
and 8 of 10.
If you have any additional questions or need any additional
information, please call.
Enclosures
TMS/mpa
Very truly yours,
PARKER & AS O IA ES,
Ti4tJ. Stewart,
xc: Mr. Jim Grant (w/enclosures)
Mr. Donnie Huffman
CF (P)
INC.
P.E.
FEB 2 8 1994 L�
D E IN
n- n 1114
ENVIRONMENTAL ENGINEERING ■ STORM WATER MANAGEMENT ■ WATER AND WASTEWATER SYSTEMS
DEVELOPMENT CONSULTING 0 FEASIBILITY REPORTS ■ ENVIRONMENTAL SCIENCE ■ CONSTRUCTION PLANS

STATE OF NORTH CAROLINA
DEPARTMENT OF TPANSPORTATION
I,NNIES B. HUNT. )R DIVISION OF HIGHWAYS SAM HUNT
GOVERNOR 410 New Bridge Street SECRETARY
Suite 7A
Jacksonville, NC 28540 p�
February 21, 1994 KIf ED
FEB 2 4 1994
PARKER
Division 3
District 1
FILE: V,141'(ewo-0
ATTN: Mr. Tim Stewart, P.E. �� VItL" F
Parker and Associates, Inc.
P. O. Box 976
Jacksonville, NC 28541-0976
Subject: Slope Requirements for DEHNR
Dear Mr. Stewart:
I have consulted with Mr. J. H. Medlin, Jr., Assistant
Division Engineer, on the above subject. Since both the
Department of Environment, Health, and Natural. Resources and
the Department of Transportation are both State of North
Carolina agencies, tky 51ore_strin9ent__requirements_of_,DEHNR
would_overrde our requirements.) Therefore, thy 3:1 slopes
should be used.
If the 3:1 slopes cannot be obtained within the proposed
right-of-way, then additional right-of-way would be required.
If I can be of fuither assistance, please advise.
Very truly yours,
01,�4
vxz—��—
D. R. Huffman
District Engineer
DRH:as
cc: Mr. D. J. Bowers KONWATER
Mr. B. B. Dixon - w/attachments u V Illl
Mr. J. B. Croom - w/attachments U III,
FEB 2 8 1994 U
dtm
0T 41 405I 1114-

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary Regional Manager
January 14, 1994
Mr. Tim Stewart, P.E.
Parker and Associates
Post Office Box 976
Jacksonville, North Carolina 28541-0976
Subject: ADDITIONAL INFORMATION
Stormwater Project No. 931114
Whitewood Village
Onslow County
Dear Mr. Stewart:
The Wilmington Regional Office received a Stormwater Submittal for the Whitewood Village on
November 24, 1993, and requested information on January 11, 1994. A preliminary review of that
information has determined that the submittal for the subject project is still not complete. The following
information is needed to continue the stormwater review:
1. Item #1 requested on November 30, 1993 has not been added to the plans. The plans you
sent me were not revised in any way from the originals received on November 24, 1993.
Please add the street names beneath the appropriate part of the section (local residential
or residential collector).
2. Please provide three (3) copies of all revised plans.
3. Item #2 requested on November 30, 1993 has not been received. The 2:1 back slope on
the road section is unacceptable to this Office. As requested before, a letter from DOT
must be provided stating that the 2:1 slope will be maintained or anchored appropriately
as necessary.
127 Cardinal Drive Extension, Wilmington, N.C. 29405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

+ Mr. Tim Stewart
January 14, 1994
Stormwater Project No. 931114
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 February 14, 1994, or the submittal will
be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
DA/arl: S:\WQS\STORMWAT\ADDINFO\931114.JAN
cc: (2) Linda Lewis
Central Files
2

JAN 1 1 1994
EROSION AND SEDIMENTATION CONTROL
NARRATIVE
TO SERVE
WHITEWOOD VILLAGE
OWNER:
WIIITEWOOD ENTERPRISES
RALEIGH, NORTH CAROLINA
November 1993
:V-9 122
SEAL
14575 g
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M.
PARKER AND ASSOCIATES, INC. STO IRTER
Engineering - Surveying - Planning
P.O. Drawer 976
Jacksonville, North Carolina 28541
919-455-2414
,UIL�6I56V19�j;,
IIJnU� JAN 1 1 1994 U
:# 931 h oTlq

®ap,Mpitt c 1993 by Parker & Associates, Inc.
All rights reserved. No part of this document may
be reproduced in any form or by any means without prior
written permission. Use of this document, except by
those expressly authorized, is strictly prohibited.

INDEX
1. Title Page .......................... :...................... 1
2. Index ...................................................... 1
3. Project Information Sheet .................................. 1
4. Sedimentation Control Narrative ......................... NR-1 - 7
5. Engineering Assumptions and Tables ...................... EA-1 - 2
6. Engineering Calculations ................................ EC-1 - 2
Appendix I, Financial Responsibility Form (copy)
Appendix II, Density Limits for Stormwater Control (copy)

PROJECT INFORMATION SHEET
'- OWNER:
Whitewood Enterprises
4408 Leota Drive
Raleigh, North Carolina 27603-3828
Contact Person: Mr. James B. Grant
[phone]
ENGINEER:
Parker and Associates, Inc.
P. O. Box 976
Jacksonville, North Carolina 28541-0976
Contact Person: Timothy M. Stewart, P.E.
John W. Parker, R.L.S.
[phone]

SEDIMENTATION CONTROL NARRATIVE
1. PURPOSE:
The purpose of this report is to provide specifications for the
measures and methods proposed to control accelerated erosion and
sedimentation resulting from the land disturbing activities of more
than one contiguous acre in size. This report is prepared for
conformance with the requirements of the Sedimentation Pollution
Control Act of 1973. Other regulatory program requirements are
carefully considered in the site design, but this report does not
assure nor imply conformance with any other rules, laws, or regulatory
standards.
2. SCOPE OF WORK:
This report will include a general description of existing conditions,
proposed use of the site, proposed changes to the site to accomplish
the proposed use, and the proposed measures to be taken for the
control of accelerated erosion and sedimentation during land
disturbing activities. The use of this report will require a review
and familiarization with the plans and appendices, as they will
clarify and supplement the narrative information.
The services provided by this report are intended solely for the
benefit of the Financially Responsible Person. Nothing contained
herein shall confer any rights upon or create any duties on the part
of the design firm toward any person other than the Financially
Responsible Person. The Contractor(s) conducting the land disturbing
activity, as delegated by the Financially Responsible Person, is
solely responsible for the detailed means, methods, procedures,
sequencing, co-ordination, job safety, and failures to carry out that
work in conformance with this report, specifications, and plans.
Observations and inspections by,the design firm does not assume nor
imply any assumption of any supervisory responsibilities by the design
firm.
This report shall constitute supplementary conditions for the work
specified herein and if any other provisions are found to conflict
with these provisions, the most restrictive provision shall apply.
This report, and any specifications and plans which this report is
part of or contingent to, shall be on site at all times that any of
the specified work is being actively prosecuted on the site.
The Sedimentation Pollution Control Act of 1973 and resulting
sedimentation control programs are performance oriented. Storm water
runoff events exceeding mandatory design guidelines can and do occur.
The Contractor shall actively prosecute the goal of minimizing off -
site sedimentation by the installation, maintenance, and amendment of
measures in conformance with this report with the intent of precluding
off -site accelerated sedimentation.

NR-2
3. PROJECT DESCRIPTION:
Whitewood Village is a proposed 54 lot subdivision located on NCSR
1518, in Onslow County, North Carolina. This section contains
approximately 23.5 acres, of which 4.4 acres will be disturbed during
construction of the roads, ditches, and swales, and water and sewer
installation.
4. EXISTING CONDITIONS
The site is currently wooded. Based on the Onslow County Soil Maps,
this site consists mostly of Torhunta fine sandy -loam in the front of
the project (along NCSR 1518) and Foreston loamy fine sand soils in
the back. Torhunta soils are typically very poorly drained, with 0.5
to 1.5 Seasonal High Water Table, and are moderately favorable for
drainage. Foreston soils are typically moderately well drained, with
2.0 - 3.5 feet to Seasonal High Water Table, and are favorable for
drainage. Both types of soils contain a high amount of fine material
which need to be filtered from the runoff prior to discharge. The
soil also has poor resistance to erosion of ditch banks and slopes.
5. SEDIMENT CONTROL STRUCTURES AND MEASURES:
The following structures, facilities, and measures are proposed for
control of accelerated erosion and sedimentation. All of the
specified facilities and measures may not be used on any one site or
portion of a site but are provided in case of changes in work scope,
unpredictable changes in site character, or ineffectiveness of the
planned measures. The specifications provided for the facilities and
measures should assist in determining which measures are most
appropriate when additional measures are considered desirable.
A. Construction Sequence:
Sequencing a timely execution of construction activities is
considered the most effective means for controlling accelerated
erosion and sedimentation. Controlling the source of sedimenta-
tion is a more efficient and cost effective approach to provid-
ing for control of off -site accelerated sedimentation resulting
from construction activities. The following construction
sequence(s) will define the relative timeliness of installing
sediment control measures and the timely stabilization of the
contributing watersheds.
No work shall be prosecuted until the relevant permits and
approvals are obtained. Relevant permits and approvals shall
include but may not be limited to: (a) water and sewer system
extension approval by the N. C. Division of Environmental Health
(DEH) and N.C. Division of Environmental Management (DEM),
respectively; (b) storm water control approval by DEM; and
(c) sediment control plan approval by the N.C. Land Quality Sec-
tion (LQS) and roads and drainage approval by N.C. Department of
Transportation. Prior to any land disturbing activities, a pre -
construction conference should be established at a place and
time acceptable to LQS personnel.

NR-3
Sediment Control Construction Operation Sequence:
1. Place stabilized construction entrances at the entrances to
the subdivision on Maplecrest Way from NCSR 1518.
2. Rough grade street profiles. Install sediment traps and
rock check dams in the permanent road side ditches.
3. Enlarge, amend, and maintain sedimentation control measur-
ers as needed for revised watershed conditions and effec-
tive restraint of off -site sedimentation.
4. Install all subsurface utilities, including water, sewer,
storm drainage, electrical, etc., which will be located
within the street rights -of -way. Reshape any roads and
ditch work that is disturbed. Place CABC, then asphalt, on
roads. Install rip rap scour pads at all pipe outlets.
5. Seed and mulch or otherwise stabilize all road shoulders
and ditches and all disturbed areas within 30 working days
of completing any phase of construction.
6. Seed and mulch or otherwise provide protective cover
sufficient to restrain accelerated erosion upon completion
of construction or cessation of work, within 30 working
days or 120 calendar days, whichever is less.
7. All sedimentation control devices and facilities not
displaced by watershed stabilization shall be maintained at
the full functional capacity until the contributing
watershed is stabilized. Sediment traps shall be main-
tained to at least 50% of the original installation volume
until the contributing watershed is stabilized.
8. Upon final stabilization, clean out and/or fill sediment
traps and remove rock check dams and inspect and maintain
all rip rap scour pads.
The approximate construction duration is expected to be
between 4 to 6 months. Work is expected to begin imme-
diately upon plan approval by LQS.
S. Stabilized Construction Entrance:
This facility shall be constructed as shown on the detail. It
shall be placed at all locations of construction access to the
project from public right-of-ways or adjacent properties. If
the gravel pad is found to be ineffective, other measures such
as enlarging the entrance or washing all construction vehicle
tires may be required to prevent sediment tracking onto public
rights -of -way or other paved areas serviced by storm drainage
collection systems. As permanent stabilization is established
and progresses to the interior of the project, the construction
entrance or similar means shall be progressively located to
remain at the interface of the construction activities in

NR-4
progress an the project areas that are stabilized. This detail
may also be used to stabilize contractor staging areas inside
the project boundaries.
C. Silt Fences:
Fabric silt fences shall be constructed as per the detail.
These devices may be sued at storm drain inlets not subject to
concentrated storm run-off and any other areas designated that
typically do not receive diffused surface water flow in quanti-
ties greater than one cubic foot per second per ten foot
sections of the proposed silt fence. Silt fences shall be
inspected after every rain and at intervals not exceeding one
week. Accumulated sediment shall be removed and placed in
approved spoils areas. Any deterioration of this device shall
require immediate repair to a state of 100% functional stabili-
ty.
D. Finish Grades:
All cut and fill grading shall be maintained to provide positive
surface drainage throughout the construction process in the
areas of the construction activities. All outlets constructed
for this purpose shall be provided with sediment control
devices. All cut and.fill areas shall be shaped to final grade
in one continuous operation. Cut and fill slopes which shall be
stabilized with vegetation requiring mowing maintenance, shall
be no steeper than 3:1 (horizontal:vertical). No cut or fill
slopes in or immediately parallel to rights -of -ways or easements
shall exceed 2:1. The side slopes of excavated trenches in
cohesionless soil materials shall not exceed 2:1. All cut or
fill slopes subject to concentrated storm water run-on shall be
provided with diversions or slope drains to protect the slope
face.
E. Permanent Velocity Control Measures (Rip Rap Scour Pad):
All storm drain outlets that exceed allowable velocities shall
be provided with velocity transition facilities to minimize
outlet scour. outlet velocities are determined in the manner
stated in the Engineering Assumptions. The average velocities
for permanent swales or channels shown on the plans are designed
to be less than the control velocity of the soil materials
expected in those channels, or are provided with an erosion
resistant liner. Additional engineering assumptions are
specified on .each applicable detail. Specific measures for this
purpose may include but shall not be limited to channel linings,
rip rap aprons, check dams, dissipator basins, slope drains, and
permanent ,diversion swales. Rock check dams or treated wood
check dams may be installed as permanent facilities to reduce
average ditch and swale energy gradients. These facilities
shall be installed in conformance with the applicable details.

RUM
F. Temporary Velocity Control Measures (Rock Check Dams and
Sediment Traps):
Typical temporary velocity control devices may include but shall
not be limited to check dams, temporary diversions, debris bar-
riers, staked straw bales and sediment traps. Measures shall be
constructed as per the applicable detail(s). Standard rock
check dams may be used in permanent channels where the expected
:design velocities are less that 3.5 fps. Fortified rock check
dams are used for velocities exceeding 3.5 fps and the stone is
sized for the design velocities based on the charts in the
Engineering Assumptions. Energy checks will be used in all
temporary and permanent channels where the channel degradation
for bare soil conditions is expected or becomes self-evident
during the site development. Use of staked straw bales shall
include only those situations where a filtering function is not
required. Typical uses may include placement in sediment basin
interiors to increase travel path tortuosity, increase sediment
trap efficiency, and as temporary diversions in locations
initially inaccessible by construction equipment. Sediment
traps are sized and located in the manner stated in the Engi-
neering Assumptions.
G. Protective Ground Cover:
Areas to be protected by permanent vegetative cover shall
include but shall not be limited to any soil area denuded of a
protective cover during the construction and not otherwise
stabilized by improvements during the development construction
process. Any undirected disturbed areas shall be stabilized at
the expense of the Contractor. In cases using grass for
permanent stabilization, the work shall include but not be
limited to appropriate tilling of the area, the application of
soil amendments, sowing of seed, and placing of appropriate
mulch. Areas to be stabilized by landscape plantings and turf
shall be installed in conformance with the landscaping and turf
specifications.
Areas to be seeded for grass stabilization shall be given an
initial application of agricultural lime at a rate of at least
4,000 pounds per acre, superphosphate at 600 pounds per acre,
and 12-4-8 grade fertilizer (or equivalent) at a rate of 600
pounds per acre, all of which shall be thoroughly mixed with the
soil. After the area to be seeded is brought to proper finish
grade, the entire area shall be tilled on the contour to a
minimum depth of 4-inches by discing, harrowing, or other
approved means. Following tillage, all large debris and stones
shall be removed and the surface leveled to a smooth aspect.
Dense or compacted soil areas and cut grade soil areas shall be
ripped at greater than 6-inches of depth with a spring toothed
ripper or similar equipment after finish grade but before
tillage. Severely compacted surfaces shall be ripped to at
least 12-inches of depth. No compacted soils subject to
grassing for stabilization shall be covered with soil fill until
ripped. Finish grades on slopes exceeding 30% shall be rough-

NR-6
ened parallel to contours to maximize surface storage and
minimize run-off.
Upon completion of ground and soil preparation work, a grass
seed mixture of 100 pounds per acre of "Rebel" fescue, 25 pounds
per acre of common bermuda grass, and 10 pounds per acre of
centipede grass shall be sown. Bermuda grass seed
shall be in an unhulled (with hulls) condition from September 1
to April 1 and be in a hulled (without hulls) condition at all
other times. Substitutions for "Rebel" fescue will be consid-
ered acceptable if the substituted tall fescue variety has no
ratings less than 115" as determined by the USDA 1983 Tall Fescue
Trials or more recent USDA trial data. This shall be followed
by placing a suitable cover of clean grain straw or approved
equivalent mulch at a rate of 1 1/2 to 2 tons per seeded area.
In the case of sloping areas or other areas of more concentrated
storm water run-off, the straw shall be stabilized by the
application of an asphalt emulsion or other approved binding
materials. Alternative methods such as hydro -seeding and hydro -
mulching will be considered on an individual basis.
The Contractor shall guarantee a full stand of grass over the
entire seeded area. A full stand of grass will be considered
acceptable when areal cover is at least 95% at a uniform minimum
height of 3 inches. The Contractor shall then top -dress the
stand of grass with a minimum of 300 pounds per acre of 12-4-8
fertilizer (or equivalent). Annual weed grasses and grain weeds
shall not be considered part of the minimum areal cover, and
seedling stands shall not be considered acceptable until the
stand of specified species reaches a state of uniform post -
seedling maturity. If straw mulching results in competing
stands of grain, maintenance shall include mowing of the grain
weed stand to a height of three (3) inches prior to reaching a
height of seven (7) inches. Unacceptable grass stands shall be
overseeded, after aeration by spiker, at half the original rate,
as many times as necessary to establish an acceptable stand.
Temporary protective cover may include solid plastic sheeting,
porous mats, coarse aggregate, spraying of soil stabilizer
concentrates, temporary grass cover, heavy applications of straw
mulch, and other measures that protect bare soil surfaces from
accelerated erosion. Commercial products shall be utilized in
conformance with the manufacturers recommendations. Clean grain
straw shall be applied uniformly at a minimum rate of five (5)
tons per acre. Methods and measures utilized will be considered
acceptable only within the specific context of the use for each
individual circumstance and the effectiveness in controlling
accelerated erosion.

NR-7
H. Maintenance•
All erosion and sedimentation control devices and measures shall
remain in place and be maintained to full functional capacity by
the Contractor until the measure is displaced by permanent
development features or all of the contributing watershed is
stabilized to the point of no longer contributing accelerated
sedimentation. All devices shall be inspected on at least a
weekly basis, and maintained at 100% functional design capacity.
All sediment traps and other sediment storage structures shall
be maintained to at least 500 of their sediment storage capacity
until watershed stabilization or removal.

M
ENGINEERING ASSUMPTIONS
A. Storm Water Discharge Outlet Protection:
Outlet protection is provided where the average velocity of the ten year
storm exceeds the maximum allowable velocity of the receiving soil
conditions specified by the Sedimentation Control Act of 1973. The
estimated storm water exit velocities and control velocities are given
in the drainage data chart or applicable details. Control velocities
specified by law are given in Table A. Control velocities applicable to
the specific site conditions are estimated by using Table B and the
UNIFIED soil classification of the site soil conditions. Outlet
velocities for a given discharge were determined using Manning's Formula
and Hydraulic Engineering Circular #5 (U.S. Bureau of Public Roads,
1965). For culverts that were designed for discharge rates greater than
the ten year return interval storm and similar circumstances, less than
full flow conditions were estimated using Table C. Charts and formulas
on Table D or Rip Rap apron details were used to estimate the median
diameter of stone rip rap used as velocity control measures.
MANNING'S FORMULA
Q = (1.486/n)(A)(R%)(SI/O
V = Q/A
B. Storm Water Run-off Rates:
The design peak discharge rates are shown on the drainage data chart or
applicable details. Erosion and sedimentation control measures and
devices are designed to be stable during the ten year return interval
storm. If other return interval peak discharges are used, they are
clearly identified on the applicable detail. The methods used to
estimate peak discharge rates are referenced on the drainage data charts
or applicable details.
C. Stable Channel Designs:
The criteria specified on pages 8.05.1 through 8.05.26 of the "North
Carolina Erosion and Sediment Control Planning and Design Manual" are
used as design guidelines in addition to the tables specified in Section
A of this part (Storm Water Discharge Outlet Protection). Temporary
channel linings are designed for channels that exceed permissible
velocities specified in Table A. Permanent channel linings are designed
where velocities exceed permissible velocities specified in Table E.
Temporary linings may be designed for the two or ten year return
interval peak discharge. Permanent liners are designed for the ten year
return interval peak discharge. Shear stress is evaluated for all
flexible liners with total Td values not to exceed those specified on
Table F. Computed stress values are specified on the applicable
details.

EA-2
D. Sediment Traps:
Typical sediment trap volumes are based on � acre inch of sediment
storage per year per acre of contributing watershed. Typical sediment
traps do not exceed five acres of contributing watershed and are sized
for an exposure duration of six months. A minimum of 33.5 cubic
yards/acre sediment storage is provided with multiple containment
distributed throughout the conveyance system at locations considered
most critical or most efficient in sediment entrapment.
Sediment traps with volumes unspecified on the plans are in addition to
the design volumes for typical sediment traps and shall contain a
minimum of three cubic yards of sediment storage. This type of sediment
trap is for the purpose of minimizing heavy sediment trap clogging of
closed storm water conduits and shall include but not be limited to
culvert inlet pits, catch basin sediment traps, junction box sediment
traps, and culvert outlet pits. Where volumes are specified, they are
not in addition to typical sediment trap design unless an exposure
duration exceeding six months is specified.
Where exposure durations are expected to exceed six months, a 12 month
duration is assumed and a minimum of 67 cubic yards of storage volume is
provided per disturbed acre. where prevalent disturbed soil conditions
are expected to be clays, silts, and loams, a minimum of 70% trapping
efficiency is assumed. Where prevalent disturbed soil conditions are
expected to be sands and sandy loams, a minimum of 90% trapping
efficiency is assumed. The exposure duration, prevalent soil condi-
tions, and size of contributing watershed is specified on the plans for
each sediment trap of exposure durations exceeding 12 months.

TYPICAL DITCH AND SWALE ENGINEERING CALCULATIONS - WHITEWOOD VILLAGE
Section
Area
OM
Manninos N
%
Velocity
Depth
Top
See Plans
Acres
CFS
Bare Stabilized
Grade_
Bare Stabilized
of
of
for Location
(Ft./Sec) (Ft./Sec)
Flow
Bank
A -A
1.30
3.7
0.025
0.07
0.4
1.6
0.7
0.9 Stab.
2.2' +/-
(Roadside Ditch)
12" Grass
0.6 Bare
(Typ.)
3:1 Road Slope
2:1 Back Slope
B-B
1.91
5.5
0.025
0.05
0.4
1.5
0.9
0.6 Stab.
2.0' +/-
(Swale)
2" Mowed
0.5 Bare
(Typ.)
Grass
5:1 Side Slopes
C-C
10.46
38.0
0.025
0.035
0.30
3.3
2.6
2.3 Stab.
4' +/-
(Channel)
Weeds
2.0 Bare
3:1 Side Slopes
1.5' Bottom
NOTES: 1) These sections are typical of other channels, swales,
2) See Detail Sheet, for Construction Section Detail.
3) Calculations using Flowmaster I Version 3.3 Program,
roadside ditches in the project.
Utilizing Mannings Equation.
COJ\WHITEWOOD.CL2

WHITEWOOD VILLAGE
ENGINEERING CALCULATIONS
SEDIMENT TRAP SIZING
Sediment
Trap Number
Disturbed
Area
Volume
ST
#1
0.34
Ac.
11.3
C.Y.
ST
#2
0.17
Ac.
5.7
C.Y.
ST
#3
0.25
Ac.
8.3
C.Y.
ST
#4
0.25
Ac.
8.3
C.Y.
ST
#5
0.35
Ac.
11.7
C.Y.
ST
#6
0.63
Ac.
21.0
C.Y.
ST
#7
0.29
Ac.
9.7
C.Y.
ST
#8
0.06
Ac.
2.0
C.Y.
ST
#9
0.41
Ac.
13.7
C.Y.
ST
#10
0.14
Ac.
4.7
C.Y.
ST
#11
0.14
Ac.
4.7
C.Y.
ST
#12
0.37
Ac.
12.3
C.Y.
ST
#13
0.24
Ac.
8.0
C.Y.
ST
#14
0.19
Ac.
6.3
C.Y.
ST
#15
0.09
Ac.
3.0
C.Y.
Design Standard - 66.7 C.Y. per acre per year
- Assume maximum 6-month period from start of construction
to final stabilization yields
33.3 C.Y. per acre per year

FINANCIAL RESPONSIBILITY/OWNERSHIP FORM
. SEDIMENTATION POLLUTION CONTROL. ACTT
No person may initiate any land -disturbing activity on one or more contiguous acres as covered by the Act
before this form and an acceptable erosion and sedimentation control plan have been completed and approved
by the Land Quality Section, N.C. Department of Environment, Health, and Natural Resources. (Please type or
print and, if question is not applicable, place N/A in the blank.)
Part A.
1. Project Name— Whitewood Village__
2. Location of land -disturbing activity: County
or Township_ Stump Hound and Highway / StreetNCSR 1518
3. Approximate date !and -disturbing activity will be commenced: January, 1994
3. Purpose of development (residential, commercial, industrial, etc.) :_ Residential
5. Total acreage disturbed or uncovered (including off -site borrow and waste areas )
6. Amount of fee enclosed $ 110.00
7. Has an erosion and sedimentation control plan been filed ? Yes x No
S. Person to contact should sediment control issues arise during land. dislurbirig activity.
James B. Grant, P.E.
4.4 Acres
Telephone [phone]
9. Landowner (s) of Record (Use blank page to list additional owners.):
Testamentary Tigers, Inc.
City
Name (s) — ---- ---- — --
4408 Leota Drive
Current Mailing Address Current Street Address
Raleigh, North Carolina 27603 _
City Stale Zip City State Zip —
10. Recorded in Deed Book No. _ 1071 Page No. 107
Part B. - —
i. Person (s) or firms (s) who are financially responsible for this land -disturbing activity (Use the blank page to list
additional persons or,firms):
Whitewood Enterprises
Name of Person (s)or Firm (s) ---- ---
4408 Leota DRive
-- --- —
hlai!in.g Address Street Address
Raleigh, North Carolina 27603
City — State — -- Zip City -----State Zip
Telephone— [phone] Teie n� o

2. (a) If the Financially Responsible Party is not a resident of North Carolina give name and street address of
a North Carolina Agent.
N/A
Name
Mailing Address Street Address
City State Zip City State Zip
Telephone Telephone
(b) If the Financially Responsible Party is a Partnership or other person engaging in business under an
assumed name, attach a copy of the certificate of assumed name. If the Financially Responsible Party is a
Corporation give name and street address of the Registered Agent.
N/A
Name of Registered Agent
Mailing Address Street Address
City State Zip City State Zip
Telephone Telephone
The above information is true and correct to the best of my knowledge and belief and was provided by me
under oath. ( This form must be signed by the financially responsible person if an individual or his attorney -in -
fact or if not an individual by an officer, director, partner, or registered agent with authority to execute instru-
ments for the finanacially responsible person ). I agree to provide corrected information should there be any
change in the information provided herein.
James B. Grant, P.E. Owner
Type or prin name Title or Authority
Signature
n . Date �
I, Tp -Kcc I G h(� A ( _, a Notary Public of the County of
Ft-1'Lt�f 4 ,@ ,
State of NeA#!$erv♦`m hereby certify that —
appeared personally before me this day and being duly sworn acknowledged that the above form was exe-
cuted by him.
Witness my hand and notarial seal, this
_LO day of O`I• 1g
j a2k rvQ .
Notary
kltwy PuE0% DcYJ.ab 0x%M CsaT!a
Mycommissionexpires A",'T

DIVISION OF ENVIRONMENTAL MANAGEMENT
DENSITY X ENGINEERED
PROJECT DATA
Project Name Whitewood Village
Location (County, Township/Municipality, Address, State Road) ons low Count
Owner's Name Whitewood Enterprises
MailingAddress
4408 Leota Drive; Raleigh, North Carolina 27603-3828
Phone Number [phone] Submittal Date November 19, 1993
Brief Description (include map and appropriate drawings)
54 Lot Subdivision with strip pavement roads and roadside ditches
Name of Water Body Receiving Stormwater Runoff Mi 11 Creek
Classification of Water Body SA -If SA waters, engineered system, and distance is <0.5
miles, attach report of chloride sampling results N/A mg/I
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major
404 Permit X
Other (Specify)
CALCULATION OF BUILT UPON AREA
Sedimentation/Erosion Control
DEM/DHS Sewage Disposal_
W
X
Built upon area means that portion of a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project
includes areas draining to different water classifications, please note them separately below.
Subwatershed Subwatershed
Classification
SA
Built upon area
5.88 Max
Total Project Area
23.53 Acres
% Built upon Area
25% Max_
Allowable B/U Area 25% Max.
Is the Project B/U Area 5 the Allowable B/U Area? Yes (If no, an engineered system is required.)
% Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA waters X- 25%, Other
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated Grass -lined Swales & Ditches
Office use only

Is the built upon area at least 30 feet from mean high water of all surface waters'? Yes _ If no, please
provide a description
(Note: Only boat ramps, public roads, public bridges, and walkways to water re!ated facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stormwater control
requirements through density limits.)
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this project
shall limit the allowable built -upon area per lot to 3533 square feet inclusive of right-of-way,
structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will rum with the
land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be
changed or deleted without consent of the State.
CERTIFICATION
I, James B. Grant, P.E. , certify that the information included on this
submittal form is correct, that the project will be constructed in conformance with this information, and
that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and
agree to abide by the deed restriction statement above.
O is Signature Date f L
Provide authorized person or firm name and address below:
Parker & Associates, Inc.
P. 0. Box 976
Jacksonville, North Carolina 28541-0976
I, i ( T��OnL 5"qll allotaryPublicfortheStateof Aq
County of do hereby certify that personally
appeared before me this CD day of L410li. 19 ,J ,and acknowledges the due execution
of the foregoing instrument. Witness my hand and official sea],
G CiC(� 0. JhEy lWvo
Notary Fi'b',10. DOM0) County, C=gW
hly cgmmission expires MY 17X
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Regional Office
Date
Date
Individual Evaluating Forms/Plans
Regional Water Quality Supervisor
cc: Applicant/V,'iR0/Bradley Bennett/Central Files

0
State; of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary Regional Manager
November 30, 1993
Mr. Tim Stewart, P.E.
Parker and Associates
Post Office Box 976
Jacksonville, North Carolina 28541-0976
Subject: ADDITIONAL INFORMATION
Stormwater Project No. 931114
Whitewood Village
Onslow County
Dear Mr. Stewart:
The Wilmington Regional Office received a Stormwater Submittal for the Whitewood Village on
November 24, 1993. A preliminary review of that information has determined that the submittal for the
subject project is not complete. The following information is needed to continue the stormwater review:
1. Please list the street names beneath the corresponding section. I cannot tell what is a local
residential and what is a residential collector. All pavement is noted as 18' wide, anyway.
Why are there 2 sections if only one is applicable for this project?
2. As with the Horse Creek Farms project, the ditch slopes must be 3:1 unless a letter from
the owner stating that if 2:1 is not sufficient to prevent erosion prior to the road being
accepted by DOT, then the slope will either be cut back to 3:1 or permanently anchored.
DOT must also supply a letter that if, after accepting the roads, erosion of the 2:1 slopes
occurs, then they will either cut back to 3:1 or permanently anchor the slope.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

tl� Mr. Stewart
November 30, 1993
Stormwater Project No. 931114
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 December 30, 1993, or the submittal
will be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
DA/arl: S:\WQS\STORMWAT\ADDINFO\931114.NOV
cc: (2) Linda Lewis
Central Files
2

DENSITY REVIEW
PROJECT NAME:Wh i+eWorxl V i I �Q4e REVIEWER: A R L-
PROJECT NO.: 11311 t 4- DATE: 11- 3 b - q 3
DRAINAGE BASIN: F-uI[ard Creek CLASS: SA ALLOWABLE B/U%: 25
SITE AREA= Z-3. 55 aC
L=r3igeer- uses
23.53 PC
ROAD AREA= Harlec&54 K/7
20/5x20
Gak Dale
415x /'S +-
z (35)7-
, ZCzl¢(OuZSL
QG;ace Of-.
Sa x 18 f
(35) z.
f z C. Z/46) ZS L
cemel,a Circle
lzc X18 -1
c(35) z
t Z C. Zlbb2 Z5 z
Rec/ r3uc(
1¢5x/,F
.e (35% l
f Z (. Zl¢G) Z5 e
NUMBER OF LOTS = 54- (, 5 e-17 --rf /. 5/ a c
30,2 - (v34q = l SZ ac
BUILT UPON AREA CALCULATION
Built -upon Area/Lot=[(site * density) -(road area)]/N lots
�(23.55 x,25) — 1.50- 54 = 353C 5T/1c>f"
351q s� 3o��=d (v P� e�f
DEED RESTRICTS ALLOWABLE BUILT -UPON AREA PER LOT TO :�53.3 SF INCLUSIVE
OF RIGHT-OF-WAY.
COMMENTS All ��VZr en/ /'s /8
1. Need 5'lYee4 f7a�nes lisAcd below ),0P/,coble roams✓ Befell wide -why hw 9ec%i,3'
s,We slopes 3:1 wless a /eife- Ao,,, D-owner 5X96"l f .
5 a orvlJla,.�, 3.! "I" ?e cry,5/,'uc%d o� s/�Pe u Y/ he pel ne7e choizd
2,-7d ma%nfa, zc/•
INFORMATION REQUIRED
PROVIDED REQUESTED.
DEED RESTRICTIONS
✓
DENSITY SUBMITTAL FORM
✓
DENSITY CALCULATIONS
✓
NOTARIZED SUBMITTAL AUTHORIZATION
✓
VELOCITY CALCULATIONS
/}
SITE PLAN WITH:
PROPERTY LINES
✓
STREET X-SECTION
,-my5
LOCATION MAP
✓
SWALE X-SECTION u Ar

LETTER OF TRANSMITTAL
•� . .�u-�
GENTLEMEN:
WE ARE SENDING YOU
(9) PLANS
❑ COPY OF LETTER
DESCRIPTION:
DATE: November 19, 1993
Fj ATTACHED
❑ SPECIFICATIONS
u
THESE ARE TRANSMITTED AS CHECKED RELOY:
® FOR APPROVAL
❑ AS REQUESTED
Mr. Dave .s _ n_
onslow County. N •
. u.. - . •u
❑ UNDER SEPARATE COVER
❑ PRINTS
❑ FOR REVIEW AND
-COMMENT
❑ FOR
YOUR
USE
❑ FOR
YOUR INFORMATION
❑ FOR
BIDS
DUE
❑ OTHER
❑ AS FAXED TO YOUR OFFICE
REMARKS
❑ NAND DELIVERED
❑ VIA OVERNIGHT MAIL
COPIES TO:Mr. Jim Grant (w/enclosures) Timothy tewart, P.E.
CF (P) LAM
TMS/mpa (IF ENCLOSURES ARE NOT AS NOTED, KINDLY NOTIFY US AT ONCE)

STORMWATER CALCULATIONS
WHITEWOOD VILLAGE
WHITEWOOD VILLAGE, total area = 23.53 acres
Maximum percent "built upon"
Maximum area "built upon"
Street "built upon area"
Maximum "built upon area,, remaining
for lots (54)
Maximum "built upon area" per lot
= 25%
= 5.88 acres
= 1.50 acres
= 4.38 acres
3,533 S.F.
35$5
'unU( NOV 2 4 1993 U
DEM
aoT 93 L 14-

EROSION AND SEDIMENTATION CONTROL
NARRATIVE
TO SERVE Nnv 2 � 1993
WHITEWOOD VILLAGE
OWNER:
WIIITEWOOD ENTERPRISES
RALEIGH, NORTH CAROLINA
November 1993
STORM �16 .
I� Nnv 7 4 199.3 U
D E M
# 3 111—�I� 11 4II -
.-1 15
a4575 p
f
* tl h mo j
PARKER AND ASSOCIATES, INC.
Engineering - Surveying - Planning
P.O. Drawer 976
Jacksonville, North Carolina 28541
919-455-2414

r
w z L!
- W
Copyright ,D 1993 by Par!,er 0- A.,3scciates, Inc
Au Aghts efuumm'.. NO may
be rqp-ro —1 u,_.!. ir.- ili�zy nj any pi-ior
written -ulont by
those exprosay authoAmad, is stwky pyahjWted.

w
b
INDEX
1. Title Page ................................................. 1
2. Index ...................................................... 1
3. Project Information Sheet .................................. 1
4. Sedimentation Control Narrative ......................... NR-1 - 7
5.
Engineering
Assumptions and Tables ......................
EA-1 - 2
6.
Engineering
Calculations ................................
EC-1 - 2
Appendix I, Financial Responsibility Form (copy)
Appendix II, Density Limits for Stormwater Control (copy)

PROJECT INFORMATION SHEET
Whitewood Enterprises
4408 Leota Drive
Raleigh, North Carolina 27603-3828
Contact Person: Mr. James B. Grant
[phone]
ENGINEER:
Parker and Associates, Inc.
P. O. Box 976
Jacksonville, North Carolina 28541-0976
Contact Person: Timothy M. Stewart, P.E.
John W. Parker, R.L.S.
[phone]

SEDIMENTATION CONTROL NARRATIVE
1. PURPOSE:
The purpose of this report is to provide specifications for the
measures and methods proposed to control accelerated erosion and
sedimentation resulting from the land disturbing activities of more
than one contiguous acre in size. This report is prepared for
conformance with the requirements of the Sedimentation Pollution
Control Act of 1973. other regulatory program requirements are
carefully considered in the site design, but this report does not
assure nor imply conformance with any other rules, laws, or regulatory
standards.
2. SCOPE OF WORK•
This report will include a general description of existing conditions,
proposed use of the site, proposed changes to the site to accomplish
the proposed use, and the proposed measures to be taken for the
control of accelerated erosion and sedimentation during land
disturbing activities. The use of this report will require a review
and familiarization with the plans and appendices, as they will
clarify and supplement the narrative information.
The services provided by this report are intended solely for the
benefit of the Financially Responsible Person. Nothing contained
herein shall confer any rights upon or create any duties on the part
of the design firm toward any person other than the Financially
Responsible Person. The Contractor(s) conducting the land disturbing
activity, as delegated by the Financially Responsible Person, is
solely responsible for the detailed means, methods, procedures,
sequencing, co-ordination, job safety, and failures to carry out that
work in conformance with this report, specifications, and plans.
Observations and inspections by the design firm does not assume nor
imply any assumption of any supervisory responsibilities by the design
firm.
This report shall constitute supplementary conditions for the work
specified herein and if any other provisions are found to conflict
with these provisions, the most restrictive provision shall apply.
This report, and any specifications and plans which this report is
part of or contingent to, shall be on site at all times that any of
the specified work is being actively prosecuted on the site.
The Sedimentation Pollution Control Act of 1973 and resulting
sedimentation control programs are performance oriented. Storm water
runoff events exceeding mandatory design guidelines can and do occur.
The Contractor shall actively prosecute the goal of minimizing off -
site sedimentation by the installation, maintenance, and amendment of
measures in conformance with this report with the intent of precluding
off -site accelerated sedimentation.

1
3. PROJECT DESCRIPTION:
whitewood Village is a proposed 54 lot subdivision located on NCSR
1518, in Onslow County, North Carolina. This section contains
approximately 23.5 acres, of which 4.4 acres will be disturbed during
construction of the roads, ditches, and swales, and water and sewer
installation.
4. EXISTING CONDITIONS
The site is currently wooded. Based on the Onslow County Soil Maps,
this site consists mostly of Torhunta fine sandy -loam in the front of
the project (along NCSR 1518) and Foreston loamy fine sand soils in
the back. Torhunta soils are typically very poorly drained, with 0.5
to 1.5 Seasonal High Water Table, and are moderately favorable for
drainage. Foreston soils are typically moderately well drained, with
2.0 - 3.5 feet to Seasonal High Water Table, and are favorable for
drainage. Both types of soils contain a high amount of fine material
which need to be filtered from the runoff prior to discharge. The
soil also has poor resistance to erosion of ditch banks and slopes.
S. SEDIMENT CONTROL STRUCTURES AND MEASURES:
The following structures, facilities, and measures are proposed for
control of accelerated erosion and sedimentation. All of the
specified facilities and measures may not be used on any one site or
portion of a site but are provided in case of changes in work scope,
unpredictable changes in site character, or ineffectiveness of the
planned measures. The specifications provided for the facilities and
measures should assist in determining which measures are most
appropriate when additional measures are considered desirable.
A. Construction Sequence:
Sequencing a timely execution of construction activities is
considered the most effective means for controlling accelerated
erosion and sedimentation. Controlling the source of sedimenta-
tion is a more efficient and cost effective approach to provid-
ing for control of off -site accelerated sedimentation resulting
from construction activities. The following construction
sequence(s) will define the relative timeliness of installing
sediment control measures and the timely stabilization of the
contributing watersheds.
No work shall be prosecuted until the relevant permits and
approvals are obtained. Relevant permits and approvals shall
include but may not be limited to: (a) water and sewer system
extension approval by the N. C. Division of Environmental Health
(DEH) and N.C. Division of Environmental Management (DEM),
respectively; (b) storm water control approval by DEM; and
(c) sediment control plan approval by the N.C. Land Quality Sec-
tion (LQS) and roads and drainage approval by N.C. Department of
Transportation. Prior to any land disturbing activities, a pre -
construction conference should be established at a place and
time acceptable to LQS personnel.

NR-3
Sediment Control Construction Operation Sequence:
1. Place stabilized construction entrances at the entrances to
the subdivision on Maplecrest Way from NCSR 1518.
2. Rough grade street profiles. Install sediment traps and
rock check dams in the permanent road side ditches.
3. Enlarge, amend, and maintain sedimentation control measur-
ers as needed for revised watershed conditions and effec-
tive restraint of off -site sedimentation.
4. Install all subsurface utilities, including water, sewer,
storm drainage, electrical, etc., which will be located
within the street rights -of -way. Reshape any roads and
ditch work that is disturbed. Place CABC, then asphalt, on
roads. Install rip rap scour pads at all pipe outlets.
5. Seed and mulch or otherwise stabilize all road shoulders
and ditches and all disturbed areas within 30 working days
of completing any phase of construction.
6. Seed and mulch or otherwise provide protective cover
sufficient to restrain accelerated erosion upon completion
of construction or cessation of work, within 30 working
days or 120 calendar days, whichever is less.
7. All sedimentation control devices and facilities not
displaced by watershed stabilization shall be maintained at
the full functional capacity until the contributing
watershed is stabilized. Sediment traps shall be main-
tained to at least 50% of the original installation volume
until the contributing watershed is stabilized.
8. Upon final stabilization, clean out and/or fill sediment
traps and remove rock check dams and inspect and maintain
all rip rap scour pads.
The approximate construction duration is expected to be
between 4 to 6 months. Work is expected to begin imme-
diately upon plan approval by LQS.
B. Stabilized Construction Entrance:
This facility shall be constructed as shown on the detail. It
shall be placed at all locations of construction access to the
project from public right-of-ways or adjacent properties. If
the gravel pad is found to be ineffective, other measures such
as enlarging the entrance or washing all construction vehicle
tires may be required to prevent sediment tracking onto public
rights -of -way or other paved areas serviced by storm drainage
collection systems. As permanent stabilization is established
and progresses to the interior of the project, the construction
entrance or similar means shall be progressively located to
remain at the interface of the construction activities in

Lq
0
E
progress an the project areas
may also be used to stabilize
the project boundaries.
Silt Fences -
NR-4
that are stabilized. This detail
contractor staging areas inside
Fabric silt fences shall be constructed as per the detail.
These devices may be sued at storm drain inlets not subject to
concentrated storm run-off and any other areas designated that
typically do not receive diffused surface water flow in quanti-
ties greater than one cubic foot per second per ten foot
sections of the proposed silt fence. Silt fences shall be
inspected after every rain and at intervals not exceeding one
week. Accumulated sediment shall be removed and placed in
approved spoils areas. Any deterioration of this device shall
require immediate repair to a state of 100% functional stabili-
ty.
Finish Grades:
All cut and fill grading shall be maintained to provide positive
surface drainage throughout the construction process in the
areas of the construction activities. All outlets constructed
for this purpose shall be provided with sediment control
devices. All cut and fill areas shall be shaped to final grade
in one continuous operation. Cut and fill slopes which shall be
stabilized with vegetation requiring mowing maintenance, shall
be no steeper than 3:1 (horizontal: vertical). No cut or fill
slopes in or immediately parallel to rights -of -ways or easements
shall exceed 2:1. The side slopes of excavated trenches in
cohesionless soil materials shall not exceed 2:1. All cut or
fill slopes subject to concentrated storm water run-on shall be
provided with diversions or slope drains to protect the slope
face.
Permanent Velocity Control Measures (Rip Rap Scour Pad):
All storm drain outlets that exceed allowable velocities shall
be provided with velocity transition facilities to minimize
outlet scour. outlet velocities are determined in the manner
stated in the Engineering Assumptions. The average velocities
for permanent swales or channels shown on the plans are designed
to be less than the. control velocity of the soil materials
expected in those channels, or are provided with an erosion
resistant liner. Additional engineering assumptions are
specified on each applicable detail. Specific measures for this
purpose may include but shall not be limited to channel linings,
rip rap aprons, check dams, dissipator basins, slope drains, and
permanent diversion swales. Rock check dams or treated wood
check dams may be installed as permanent facilities to reduce
average ditch and swale energy gradients. These facilities
shall be installed in conformance with the applicable details.

F.
NR-5
Typical temporary velocity control devices may include but shall
not be limited to check dams, temporary diversions, debris bar-
riers, staked straw bales and sediment traps. Measures shall be
constructed as per the applicable detail(s). Standard rock
check dams may be used in permanent channels where the expected
design velocities are less that 3.5 fps. Fortified rock check
dams are used for velocities exceeding 3.5 fps and the stone is
sized for the design velocities based on the charts in the
Engineering Assumptions. Energy checks will be used in all
temporary and permanent channels where the channel degradation
for bare soil conditions is expected or becomes self-evident
during the site development. Use of staked straw bales shall
include only those situations where a filtering function is not
required. Typical uses may include placement in sediment basin
interiors to increase travel path tortuosity, increase sediment
trap efficiency, and as temporary diversions in locations
initially inaccessible by construction equipment. Sediment
traps are sized and located in the manner stated in the Engi-
neering Assumptions.
G. Protective Ground Cover:
Areas to be protected by permanent vegetative cover shall
include but shall not be limited to any soil area denuded of a
protective cover during the construction and not otherwise
stabilized by improvements during the development construction
process. Any undirected disturbed areas shall be stabilized at
the expense of the Contractor. In cases using grass for
permanent stabilization, the work shall include but not be
limited to appropriate tilling of the area, the application of
soil amendments, sowing of seed, and placing of appropriate
mulch. Areas to be stabilized by landscape plantings and turf
shall be installed in conformance with the landscaping and turf
specifications.
Areas to be seeded for grass stabilization shall be given an
initial application of agricultural lime at a rate of at least
4,000 pounds per acre, superphosphate at 600 pounds per acre,
and 12-4-8 grade fertilizer (or equivalent) at a rate of 600
pounds per acre, all of which shall be thoroughly mixed with the
soil. After the area to be seeded is brought to proper finish
grade, the entire area shall be tilled on the contour to a
minimum depth of 4-inches by discing, harrowing, or other
approved means. Following tillage, all large debris and stones
shall be removed and the surface leveled to a smooth aspect.
Dense or compacted soil areas and cut grade soil areas shall be
ripped at greater than 6-inches of depth with a spring toothed
ripper or similar equipment after finish grade but before
tillage. Severely compacted surfaces shall be ripped to at
least 12-inches of depth. No compacted soils subject to
grassing for stabilization shall be covered with soil fill until
ripped. Finish grades on slopes exceeding 30% shall be rough-

NR-6
ened parallel to contours to maximize surface storage and
minimize run-off.
Upon completion of ground and soil preparation work, a grass
seed mixture of 100 pounds per acre of "Rebel" fescue, 25 pounds
per acre of common bermuda grass, and 10 pounds per acre of
centipede grass shall be sown. Bermuda grass seed
shall be in an unhulled (with hulls) condition from September 1
to April 1 and be in a hulled (without hulls) condition at all
other times. Substitutions for "Rebel" fescue will be consid-
ered acceptable if the substituted tall fescue variety has no
ratings less than 11511 as determined by the USDA 1983 Tall Fescue
Trials or more recent USDA trial data. This shall be followed
by placing a suitable cover of clean grain straw or approved
equivalent mulch at a rate of 1 1/2 to 2 tons per seeded area.
In the case of sloping areas or other areas of more concentrated
storm water run-off, the straw shall be stabilized by the
application of an asphalt emulsion or other approved binding
materials. Alternative methods such as hydro -seeding and hydro -
mulching will be considered on an individual basis.
The Contractor shall guarantee a full stand of grass over the
entire seeded area. A full stand of grass will be considered
acceptable when areal cover is at least 95% at a uniform minimum
height of 3 inches. The Contractor shall then top -dress the
stand of grass with a minimum of 300 pounds per acre of 12-4-8
fertilizer (or equivalent). Annual weed grasses and grain weeds
shall not be considered part of the minimum areal cover, and
seedling stands shall not be considered acceptable until the
stand of specified species reaches a state of uniform post -
seedling maturity. If straw mulching results in competing
stands of grain, maintenance shall include mowing of the grain
weed stand to a height of three (3) inches prior to reaching a
height of seven (7) inches. Unacceptable grass stands shall be
overseeded, after aeration by spiker, at half the original rate,
as many times as necessary to establish an acceptable stand.
Temporary protective cover may include solid plastic sheeting,
porous mats, coarse aggregate, spraying of soil stabilizer
concentrates, temporary grass cover, heavy applications of straw
mulch, and other measures that protect bare soil surfaces from
accelerated erosion. Commercial products shall be utilized in
conformance with the manufacturers recommendations. Clean grain
straw shall be applied uniformly at a minimum rate of five (5)
tons per acre. Methods and measures utilized will be considered
acceptable only within the specific context of the use for each
individual circumstance and the effectiveness in controlling
accelerated erosion.

RKCIFi
H. Maintenance•
All erosion and sedimentation control devices and measures shall
remain in place and be maintained to full functional capacity by
the Contractor until the measure is displaced by permanent
development features or all of the contributing watershed is
stabilized to the point of no longer contributing accelerated
sedimentation. All devices shall be inspected on at least a
weekly basis, and maintained at 100% functional design capacity.
All sediment traps and other sediment storage structures shall
be maintained to at least 50% of their sediment storage capacity
until watershed stabilization or removal.

ENGINEERING ASSUMPTIONS
A. Storm Water Discharge Outlet Protection:
Outlet protection is provided where the average velocity of the ten year
storm exceeds the maximum allowable velocity of the receiving soil
conditions specified by the Sedimentation Control Act of 1973. The
estimated storm water exit velocities and control velocities are given
in the drainage data chart or applicable details. Control velocities
specified by law are given in Table A. Control velocities applicable to
the specific site conditions are estimated by using Table B and the
UNIFIED soil classification of the site soil conditions. Outlet
velocities for a given discharge were determined using Manning's Formula
and Hydraulic Engineering Circular #5 (U.S. Bureau of Public Roads,
1965). For culverts that were designed for discharge rates greater than
the ten year return interval storm and similar circumstances, less than
full flow conditions were estimated using Table C. Charts and formulas
on Table D or Rip Rap apron details were used to estimate the median
diameter of stone rip rap used as velocity control measures.
MANNING'S FORMULA
Q = (1.486/n)(A)(R3/3)(S'/a)
V = Q/A
B. Storm Water Run-off Rates:
The design peak discharge rates are shown on the drainage data chart or
applicable details. Erosion and sedimentation control measures and
devices are designed to be stable during the ten year return interval
storm. If other return interval peak discharges are used, they are
clearly identified on the applicable detail. The methods used to
estimate peak discharge rates are referenced on the drainage data charts
or applicable details.
C. Stable Channel Designs:
The criteria specified on pages 8.05.1 through 8.05.26 of the "North
Carolina Erosion and Sediment Control Planning and Design Manual" are
used as design guidelines in addition to the tables specified in Section
A of this part (Storm Water Discharge Outlet Protection). Temporary
channel linings are designed for channels that exceed permissible
velocities specified in Table A. Permanent channel linings are designed
where velocities exceed permissible velocities specified in Table E.
Temporary linings may be. designed for the two or ten year return
interval peak discharge. Permanent liners are designed for the ten year
return interval peak discharge. Shear stress is evaluated for all
flexible liners with total Td values not to exceed those specified on
Table F. Computed stress values are specified on the applicable
details.

EA-2
D. Sediment Traps:
Typical sediment trap volumes are based on � acre inch of sediment
storage per year per acre of contributing watershed. Typical sediment
traps do not exceed five acres of contributing watershed and are sized
for an exposure duration of six months. A minimum of 33.5 cubic
yards/acre sediment storage is provided with multiple containment
distributed throughout the conveyance system at locations considered
most critical or most efficient in sediment entrapment.
Sediment traps with volumes unspecified on the plans are in addition to
the design volumes for typical sediment traps and shall contain a
minimum of three cubic yards of sediment storage. This type of sediment
trap is for the purpose of minimizing heavy sediment trap clogging of
closed storm water conduits and shall include but not be limited to
culvert inlet pits, catch basin sediment traps, junction box sediment
traps, and culvert outlet pits. where volumes are specified, they are
not in addition to typical sediment trap design unless an exposure
duration exceeding six months is specified.
Where exposure durations are expected to exceed six months, a 12 month
duration is assumed and a minimum of 67 cubic yards of storage volume is
provided per disturbed acre. Where prevalent disturbed soil conditions
are expected to be clays, silts, and loams, a minimum of 70% trapping
efficiency is assumed. Where prevalent disturbed soil conditions are
expected to be sands and sandy loams, a minimum of 90% trapping
efficiency is assumed. The exposure duration, prevalent soil condi-
tions, and size of contributing watershed is specified on the plans for
each sediment trap of exposure durations exceeding 12 months.

TYPICAL DITCH AND SWALE ENGINEERING CALCULATIONS - WHITEWOOD VILLAGE
Section
Area
0'
Manninos N
%
Velocity
Depth
Top
See Plans
Acres
CFS
Bare Stabilized
Grade
Bare Stabilized
of
of
for Location
(Ft./Sec) (Ft./Sec)
Flow
Bank
A -A
1.30
3.7
0.025
0.07
0.4
1.6
0.7
0.9 Stab.
2.2' +/-
(Roadside Ditch)
12" Grass
0.6 Bare
(Typ.)
3:1 Road Slope
2:1 Back Slope
B-B
1.91
5.5
0.025
0.05
0.4
1.5
0.9
0.6 Stab.
2.0' +/-
(Swale)
2" Mowed
0.5 Bare
(Typ.)
Grass
5:1 Side Slopes
C-C
10.46
38.0
0.025
0.035
0.30
3.3
2.6
2.3 Stab.
4' +/-
(Channel)
Weeds
2.0 Bare
3:1 Side Slopes
1.5' Bottom
NOTES: 1) These sections are typical of other channels, swales,
2) See Detail Sheet, for Construction Section Detail.
3) Calculations using Flowmaster I Version 3.3 Program,
roadside ditches in the project.
Utilizing Mannings Equation.
COJ\WHITEWOOD.CL2

WHITEWOOD VILLAGE
ENGINEERING CALCULATIONS
SEDIMENT TRAP SIZING
Sediment
Trap Number
Disturbed
Area
Volume
ST
#1
0.34
Ac.
11.3
C.Y.
ST
#2
0.17
Ac.
5.7
C.Y.
ST
#3
0.25
Ac.
8.3
C.Y.
ST
#4
0.25
Ac.
8.3
C.Y.
ST
#5
0.35
Ac.
11.7
C.Y.
ST
#6
0.63
Ac.
21.0
C.Y.
ST
#7
0.29
Ac.
9.7
C.Y.
ST
#8
0.06
Ac.
2.0
C.Y.
ST
#9
0.41
Ac.
13.7
C.Y.
ST
#10
0.14
Ac.
4.7
C.Y.
ST
#11
0.14
Ac.
4.7
C.Y.
ST
#12
0.37
Ac.
12.3
C.Y.
ST
#13
0.24
Ac.
8.0
C.Y.
ST
#14
0.19
Ac.
6.3
C.Y.
ST
#15
0.09
Ac.
3.0
C.Y.
Design Standard - 66.7 C.Y. per acre per year
- Assume maximum 6-month period from start of construction
to final stabilization yields
33.3 C.Y. per acre per year

FINANCIAL RESPONSIBILITY/OWNERSHIP FORM
SEDIMENTATION POLLUTION CONTROL ACT
No person may initiate any land -disturbing activity on one or more contiguous acres as covered by the Act
before this form and an acceptable erosion and sedimentation control plan have been completed and approved
by the Land Duality Section, N.C. Department of Environment, Health, and Natural Resources. (Please type or
print and, it question is not applicable, place N/A in the blank.)
Part A.
1. Project Name_ Whitewood Village
2. Location of land -disturbing activity: County____ Ons low City
or Township Stump Sound __, and Highway / Street —_NCSR 1518_-
3. Apprcxlmate date land -disturbing activity wil! be commenced:_ January, 1994
4. Purpose of development (residential, commercial, industrial, etc.) :__Residential --- _
5. Total acreage disturbed or uncovered (including off -site borrow and waste areas) : _ 4.4 Acres
6. Amount of fee enclosed $ 110.00
7. Has an erosion and sedimentation control plan been tiled ? Yes_ x No
S. Person to contact should sediment control issues arise during land -disturbing activity.
James B. Grant, P.E. _ relephone_ [phone]
C. Landowner (s) of Record ( Use blank page to list additional owners.):
Testamentary Tigers, Inc.
Name (s)
4408 Leota Drive
Current Mailing Address Current Street Address
Raleigh, North Carolina 27603
City State Zip City State Zip
10. Recorded in Deed Book No. 1071 Page No.. 107
Part B.
1. Person (s) or firms (s) who are financially responsible for this land -disturbing activity (Use the blank page to list
additional persons or firms):
Whitewood Enterprises _
Name of Person (s)or Firm (s)
4408 Leota DRive
Mailing Address Street Address
Raleigh, North Carolina 27603
City, — - State -- Zip -- City ----- State ---lip
Teleohone [phone]

2 (a) If the Financially Responsible Party is not a resident of North Carolina give name and street address of
a North Carolina Agent,
A
Name
Mailing Address
Street Address
City State Zip City State Zip
Telephone Telephone
(b) If the Financially Responsible Party is a Partnership or other person engaging in business under an
assumed name, attach a copy of the certificate of assumed name. If the Financially Responsible Party is a
Corporation give name and street address of the Registered Agent.
Name of Registered Agent
Mailing Address Street Address
City State Zip City
State Zip
Telephone Telephone
The above information is true and correct to the best of my knowledge and belief and was provided by me
under oath. ( This form must be signed by the financially responsible person if an individual or his attorney -in -
fact or if not an individual by an officer, director, partner, or registered agent with authority to execute instru-
ments for the finanacially responsible person ). I agree to provide corrected information should there be any
change in the information provided herein.
James B. Grant, P.E. Owner
Type prin}!name � / Title or Authority
Signature
re (((//1
n , Date I
Tr+Iatli T hO n 1T __, a Notary Public of the County of I�_
Rt•Y�'c,
State of Na:{7a Earof rra; hereby certify that _-
appeared personally before me this day and being duly sworn acknowledged that the above form was exe-
cuted by him. h
Wilness my hand and notarial seal, this Lrli'day of I l l� • tgr�
Seal IN
�'�Y 4ui>� t?cY.R,7� r�unty< ta'xr:a
My commission expires My

DIVISION OF ENVIRONMENTAL MANAGEMENT
DENSITY X ENGINEERED
PROJECT DATA
Project Name Whitewood Vill
Location (County, Township/Municipality, Address, State Road) ons low County
Owner's Name Whitewood Enterprises
Mail ingAddress- 4408 Leota Drive; Raleigh, North Carolina 27603-3828
Phone Number [phone] Submittal Date
November 19, 1993
Brief Description (include map and appropriate drawings)_
54 Lot Subdivision with strip pavement roads and roadside
Name of Water Body Receiving Stormwater Runoff Mill Creek
Classification of Water Body SA If SA waters, engineered system, and distance is <0.5
miles, attach report of chloride sampling results N/A mg/1
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major_
404 Permit X
Other (Svecifv)
CALCULATION OF BUILT UPON AREA
Sedimentation/Erosion Control X
DEM/DHS Sewage Disposal X
Built upon area means that portion of a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation facilities, gravel, etc., but not including wood decking. If the project
includes areas draining to different water classifications, please note them separately below.
Classification
Built upon area
Total Project Area
% Built upon Area
Allowable B/U Area
Subwatershed
SA
5.88 Max
23.53 Acres
25% Max.
25% Max.
Subwatershed
Is the Project B/U Area S the Allowable B/U Area? Yes (If no, an engineered system is required.)
% Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA waters X- 25%, Other ---30%
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated Grass -lined Swales & Ditches
Office use only

Is the built upon area at least 30 feet from mean high water of all surface waters? Yes _ If no, please
provide a description
(Note: Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stornwater control
requirements through density limits.)
DEED RESTRICTIONS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this project
shall limit the allowable built -upon area per lot to 3533 square feet inclusive of right-of-way,
structures, pavement, walkways or patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will run with the
land, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot be
changed or deleted without consent of the State.
CERTIFICATION
I, James B. Grant, P.E.
certify that the information included on this
submittal form is correct, that the project will be constructed in conformance with this information, and
that to the best of my knowledge, the proposed project complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plans on my behalf, and
agree to abide by the deed restriction statement above.
O is Signature Bate
Provide authorized person or firm name and address below:
Parker & Associates, Inc.
P. 0. Box 976
Jacksonville, North Carolina 28541-0976
allotaryPublicforthe Stateof Al IQn�i, l0i
County' of _ 7 do hereby certify that personally
,/
appeared before me this Co day of `! l Q V. , 19 � , and acknowledges the due execution
of the foregoing instrument. Witness my hand and official seal,
No afy PUKt4 G dafb County, (100role
My commission expires My CronT! ZµII nra r..;>ttc:;f a ,+,3as
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF -
Regional Office
Date
Date
Individual Evaluating Forms/Plans
Regional Water Quality Supervisor
cc: Applicant/WiROBradlev Bennett/Central Files