SW7070323_APPROVED PLANS_20070709

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO,
SW
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20�
YYYYMMD6

I
I
i

I� ' - T

LIMIT OF CONSERVATION EASEMENT LINE TABLE
BEARING
DISTANCE
LINE
BEARING
DISTANCE
LINE
BEARING
DISTANCE
S
79'03'04"
E
408.47'
L38
N
36'40'12"
W
90.24'
L75
N
64'55 26
E
167.23
S
63'00'41"
E
253.05'
L39
N
05'16'21"E
31.14'
L76
N
02*00'15"
W
56.40'
S
6T01'55
E
996.81'
L40
N35'24'10"
E
104.49'
L77
N
59*25'13"
W
168.44'
F
S
61'58'45
E
220.46'
L41
N
53'01'47"
E
87.78'
L78
S
69'18'31"
W
123.36'
S
37'22'37"
E
1124.81'
L42
S
68'37'06"
E
46.29
L79
N
58'59'06"
W
86,65'
S
49'46'51"W
113.38'
L43
N
33'04'22"
E
101.58'
L80
N
8T22 01"
W
92.50'
S
28'13'30"
W
38.98'
L44
N
19'48'23"
W
41.25'
L81
N
48,19" 1"W18.05'
S
03'33S2"
E
130.89'
L45
N
45*11'39"
E
90.28'
L82
N
41'40 34"
E
225.56'
S
62*29'10"
W
68.07'
L46
N
14'51'59"
E
105.77'
L83
N
53*16'01"
E
50.81'
C83
Cg2 ' C'
L10 N 02*28*03" E 122.49' L47 N 79'12'00" W 27.00'
L11 N 41'01'23" W 430.34' L48 N 48'22'48" W 102.47' Cgs
L12 N 29'16'22" W 205.82' L49 S 44'13 57" W 61.71 LC80
L13 N 57'38'53" W 191.92 L50 N 09'14'48" E 147.55
L14 S 12'19'33" W 577.92' L51 S 22600'03" W 102.96' Cjg• C?
L15 S 78'10'23" W 166.95' L52 S 42'31'00" W 189.27' /78
.4� C>,
L16 N 7925 26 W 398.01 L53 S 63'37 45 W 57.10 �.,
L17 N 40'54'05" E 398.78' L54 S 73'50'16" W 129.02'
L18 S 4756'48" E 84.81' L55 S 05'47'35" E 103.30' Ike,
L19 N 45'10'49" E 92.09' L56 S 13'41'11" W 178.73'
L20 N -TO; E 136.50' L57 N 74'06 57 W 141 .05 -
L21 N 35'01'40 E 54.83' L58 N 10'31'52" W 147.08' GRAPHIC SCALE
L22 N 07'08'20" W 73.05' L59 N 52'53'08" W 153.45 f 476 00 o so mo zoo
L23 N 67'53'24" W 89.23' L60 N 39' 17'39" E 451.72' t
L24 N 74'21'22" W 59.21' L61 N 15*57'15" W 67.75' fir m C3 ,
L25 N 06'45'44" E 42.61' L62 N 50'21'26" W 78.77'
L26 N 55'48'00" E 72.12' L63 N 01017'41" W 50.11'`" G>S C>1 (IN FEET )
L27 N 33'0708" E 74.00' L64 S 76'06'21" E 55.58' 1 inch = 100 ft.
L28 N 1719'25" W 32.88' L65 N 39'37'40" E 73.62'
L29 N 75'01'46" W 48.13' L66 N 70'07'05" E 87.21 C>2 '
L30 S 53*11'03" W 139.45' L67 N 40'01'09" E 33.80' <>4 /469
L31 N 4851'52" W 78.21' L68 N 16'41'34" W 55.24'
L32 S 71'14'27" W 325.34' L69 N 41'57'33" W 75.37'
L33 S 41'49'29" W 241.56' L70 N 37*54'17" W 49.25' C>3
L34 N 3917'10" W 67.80L71 S 76'03 38" W 56.15
L35 S 48'47'01"W 92.62' L72 S 35*52'11" W 197.06'1L
CAL
L36 S 1005'34 W 40.50' L73 S 85'35'31" W 53.3T Y
L37 S 69-18'28" W 65.09' L74 N 18'12'55" W 141.22' y C6,5 4
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PROJECT NO.:
206023.02
SHEET:
G-4

LIMIT OF CONSERVATION EASEMENT LINE TABLE
LINE
BEARING
DISTANCE
LINE
BEARING
DISTANCE
LINE
BEARING
DISTANCE
L1
S
79'03'04"
E
408.47'
L38
N
36*40'12"
W
90.24'
L75
N
6455'26'
E
167.23'
L2
S
63'00'41"
E
253.05'
L39
N
05'16'21"
E
31.14'
L76
N
02*00'15"
W
56.40'
L3
S
67'01'55"
E
996.81'
L40
N
3524'10"
E
104.49'
L77
N
59*25'13"
W
168.44'
L4
S
61'58'45"
E
220.46'
L41
N
53'01'47"
E
87.78'
L78
S
69018'31"
W
123.36'
L5
S
37'22'37"
E
1124.81'
L42
S
68*37'06"
E
46.29'
L79
N
58'59'06"
W
86.65'
L6
S
49'46 51
W
113.38
L43
N
33'04 22
E
101.58
L80
N
82'22 01 "
W
92.50'
L7
S
28' 13'30"
W
38.98'
L44
N
19'48'23"
W
41.25'
L81
N
48' 19' 11 "
W
18 05'
L8
S
03'33'52"
E
130.89'
L45 I
N
4T11'39"
E
90.28'
L10 N 02'28.03" E 122.49' L47 I N 79' 12'00" W 27.00'
L11 N 41'01'23" W 430.34' L48 N 48'22'48" W 102.47'
L12 N 29'16'22" W 205.82' L49 S 44'13'57" W 61.71'
L13 N 5T38'53" W 191.92' L50 N 09'14'48" E 147.55'
L14 S 12'19'33" W 577.92' L51 S 22'00'03" W 102.96'
L15 S 78"0'23" W 166.95' L52 S 42'31'00" W 189.27'
L16 N 79'25'26" W 398.01' L53 S 63'37'45" W 57.10'
L17 N 40'54'05" E 398.78' L54 S 73*50'16" W 129.02'
L18 S 47'56'48" E 84.81' L55 S 05047'35" E 103.30'
L19 N 45'10'49" E 92.09' L56 S 13.41" 1" W 178.73'
L20 N 10'48'00" E 336.50' L57 N 74'O6'57" W 141.05'
L21 N 35'01'40" E 54.83' L58 N 10'31'52" W 147.08'
L22 N 07'08'20" W 73.05' L59 N 52'53'08" W 153.45'
L23 N 67'53'24" W 89.23' L60 N 39'17'39" E 451.72'
L24 N 74'21'22" W 59.21' L61 N 1T57'15" W 67.75'
L25 N 06'45'44" E 42.61' L62 N 50'21'26" W 78.77'
L26 N 55'48'00" E 72.12' L63 N 01'17'41" W 50.11'
L27 N 33'01'08" E 74.00' L64 S 76'06'21" E 55.58'
L28 N 17'19'25" W 32.88' L65 N 39437'40" E 73.62'
L29 N 75'01'46" W 48.13' L66 N 70'07'05" E 87.21'
L30 S 53-11'03" W 139.45' L67 N 40'01'09" E 33.80'
L31 N 48'51'52" W 78.21' L68 N 16-41'34" W 55.24'
I
L82 N 41'40'34" E 225.56'
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462
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L82 N 41'40'34" E 225.56'
467
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463
462
461
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PROJECT NO.:
206023.02
SHEET:
G-5

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PROJECT NO.:
206023.02
SHEET:

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40 23 "PORTION OF FIRST TRACT"
WALTER PUYNER HEIRS EXISTING OUTFALL DITCH
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ypC. ZONED AGRICULTURAL & DITCH REGRADED TO DRAIN
PPPR�XWATER 11NE
70'08'03' W
158.14'
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206023.02
SHEET:
G-7

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PROJECT NO.:
206023.02
SHEET:
C-1
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PROJECT NO.:
206023.02
SHEET:
C-2
.+
4

OF EXISTINPi" W—rCH .i`g� I j' 'i'' + .ate •+ +i * ---
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ABBREVIATION
EP - EDGE OF PAVEMENT
TOB - TOP OF BANK
NC - NORTH CAROLINA
DOT -DEPARTMENT OF
TRANSPORTATION
INV - INVERT
MON - MONUMENT
REP - REINFORCED CONCRETE PIPE
TW - TOP OF RETAINING WALL
IPF - IRON PIPE FOUND
CL - CENTER FINE
ELEV - ELEVATION
SWMP - STORMWATER
MANAGEMENT FACILITY
MIN - MINIMUM
MAX - MAXIMUM
R - RADIUS
AC -ACRES
NWS - NORMAL WATER SURFACE
ELEVATION
SQ-SQUARE
FT - FEET
CF - CUBIC FEET
E&S SYMBOLS
CE
CONSTRUCTION ENTRANCE
SF
SILT FENCE
CIP
CULVERT INLET PROTECTION
COP
CULVERT OUTLET PROTECTION
TS
TEMPORARY SEEDING
PS
PERMANENT SEEDING
OP
OUTLET PROTECTION
CD
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X ( IN FEET )
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EXISTING SYMBOLS
❑
TELEPHONE PEDESTAL
STORM PIPE
POWER POLE
W W
WATERLINE
GUY WIRE
®
IRON PIN —ss —s —
SANITARY SEWER
O
BOREHOLE
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FIRE HYDRANT —% —%
SILT FENCE / LIMITS OF DISTURBANCE
®
WATER METER — — —
PROPOSED TOP OF BANK
wvD4
WATER VALVE
PROPOSED CENTERLINE
- - - - -
CONTOUR - HN{3EX ''
FILL AREA
----------
CONTOUR - INT-EiRMEDIATE
off E
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EXISTING EDGE OF ASPHALT
—77-
PROPOSED EDGE OF ASPHALT
ABBREVIATION
EP - EDGE OF PAVEMENT
TOB - TOP OF BANK
NC - NORTH CAROLINA
DOT -DEPARTMENT OF
TRANSPORTATION
INV - INVERT
MON - MONUMENT
REP - REINFORCED CONCRETE PIPE
TW - TOP OF RETAINING WALL
IPF - IRON PIPE FOUND
CL - CENTER FINE
ELEV - ELEVATION
SWMP - STORMWATER
MANAGEMENT FACILITY
MIN - MINIMUM
MAX - MAXIMUM
R - RADIUS
AC -ACRES
NWS - NORMAL WATER SURFACE
ELEVATION
E&S SYMBOLS
CE CONSTRUCTION ENTRANCE
SF SILT FENCE
CIP CULVERT INLET PROTECTION
COP CULVERT OUTLET PROTECTION
TS TEMPORARY SEEDING
PS PERMANENT SEEDING
OP OUTLET PROTECTION
CD CHECK DAM
SVYMP 1
SERVES PARCELS A,
STORAGE CAPACIT`
CF NWS ELEV =
BOTTOM OF P
FTpp OF
49
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L
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FABRIC 11
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/ \_ PHASE I LIMTS
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TEAfPORARY
CUL-DE-SACMIN. 35'
TURNING RADILS
GRAVEL TURN
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F'
PRUNE CODOMINANT LEADERS
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OR CROSSING BRANCHES
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REMOVE TOP OF VARE BASKET
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DO NOT PRUNE TERMINAL
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�i ANGLES & WATER SPOUTS
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TRUNK LNILESS NECESSARY.
PRUNE SUCKERS
2"- 3" MULCH KEPT
AWAY FROM TRUNK
—SOIL WELL TO CONTAIN WATER
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AREA FOR WATER DRAINAGE
MEN AND SCORE HOLE WALL A A /\ / • �% (PIPE OR TILE COULD DE
,C 4C .�� /. �� i .G.� /� W Auiv)
REMOVE CONTAINER AND CUT CIRCLING
ROOTS W CONTA6ER-GROWN. OR AS MUCH LEAVE SOLID SOIL PEDESTAL.
BURLAP AS POSME F FIELD -GROWN 00 NOT DIG DEEPER THAN
9ALL DfPR{.
TREE PLANTING DETAIL
NTS
LEGEND
QUANTITY SPECIES
943 (PC) PONTEDERIA CORDATA (PICKERELWEED)
1032 (PV) PELTANDRA VIRGNICA (ARROW ARUM)
936 (ST) SCHOENOPLECTUS TABERNAEMONANI (SOFTSTEM BULRUSH)
15 (BN) BETULA NIGRA (RIVER BIRCH)
PLANTING NOTES
'
vv avvevvvv
1. LOCATE PLANTS AND AND PLANTING BEDS BY USING SCALED
DIMENSIONS FROM STREET, PROPERTY LINES, ETC.
2. ALL PLANTS SHALL MEET OR EXCEED THE MINIMUM STANDARDS
SET BY THE U.S.D.A. STANDARD FOR NURSERY STOCK SPONSORED
BY THE AMERICAN ASSOCIATION OF NURSERYMEN, INC., WASHINGTON, D.C.
3. WETLAND HERBACEOUS PLANTS SHALL BE INSTALLED
BETWEEN 4 / 1 AND 7 / 15 AT A SPACING OF NO MORE THAN 18" O.C.
4. APPLY SLOW RELEASE FERTILIZER TO EACH PLANT AS
INSTALLED.
5. APPLY 5 GRAM AgSAFE AQUATIC TABS 20-10-5, 90 DAY
CONTINOUS FEEDING OR APPROVED EQUAL FOR HERBACEOUS
PLANT SPECIES.
6. APPLY AGRIFORM 20-10-5 PLUS MINORS PLANTING TABLETS,
2 YEAR SLOW RELEASE FOR TREES AND SHRUBS OR APPROVED EQUAL.
7. ALL WETLAND PLANTS SHALL BE GROWN IN CONTAINERS OF ATLEAST 4.5
CUBIC INCHES WITH TOPS 6" IN LENGTH AND SPACE 2' O.C. AND SUPPLIED
FROM REPUTABLE NURSERY SUCH AS COASTAL PLAIN CONSERVATION NURSERY INC.
8. CONTRACTOR SHALL PROVIDE A WARRANTY FOR (2) TWO YEARS ON ALL BMP
PLANTINGS. CONTRACTOR SHALL INSPECT AND REPLACE ANY NON -LIVING
PLANTS AT THE END OF EACH YEAR WITHIN THE TWO YEAR WARRANTY
PERIOD.
GRAPHIC SCALE
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( IN FEET )
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SHEET:

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PROJECT NO.:
206023.02
SHEET:
C-18

70' MI
FILTER /
CLOTH
6" MIN.
SIDE
ELEVATION
EXISTING
GROUND
WASH RACK
\
(OPTIONAL)
B
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/ I POSITIVE DRAINAGE
V.D.O.T. #1 TO SEDIMENT
COURSE AGGREGATE TRAPPING DEVICE
*MUST EXTEND FULL WIDTH PLAN VIEW
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FILTER
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SECTION A -A
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CONCRETE """111
SECTION B-B SPACE
cE CONSTRUCTION ENTRANCE W/ WASH RACK
N.T.S.
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1111
* VOOT
#57
SILT
HIGH
SOURCE: ADAPTED from VDOT Standard Sheets and Va. OSWC
EXTEND FILTER FABRIC
& WIRE 8" INTO 4"x4"
TRENCH AND BACKFILL
sF SILT FENCE
(WITH WIRE SUPPORT)
N.T.S.
f, vio,nrv�.� io � "niv,m�n1 IF FLOW
IS TOWARD EMBANKMENT
FLOW
OPTIONAL STONE COMBINATION
1.0' 1.5'
2.5'
CLASS I RIPRAP
PLATE. 3.08-1
cIP SILT FENCE CULVERT INLET PROTECTION
Practice Standards and Specifications
Weir lath and depth -Keep ilm spillway weir at least 4 ft long and sized to
pass the peak discharge of the 14yr storm (Figure 6.60a). A maximum flow
depth of 1 fit, a mimmmn fteebomd of OS.$ and maximum side slopes of 2:1
am recommended. Weir ledigth may be selected from Table 6.60a shown for
most site locations in North Carolina.
Table 6Xft
Design of Spillways
Dralnage Aron
Weir length'
(acres)
(h)
1
4.0
2
8.0
3
8.0
4
10.0
5
lZo
'Dimensions shown are minimum
Cross section Flier fabric
Design 21.
settled min �� Overfill 5'
top t , for sedimment
I I1a 1111i 4ftmin n_1 =1111J
1.5 tt 4
5 ft I R2:/ sideax Emergency
pass
max n1 Filter 1:1 side slopeslope '� 61 below
fabric dsettled top
max Natural of dam
ground
311
min
Figure O.Wa Temporary sedimenttrap. Stone section
c0 TEMPORARY SEDIMENT TRAP
N.T.S.
Pine Outlet to Flat Area -
r,an
Pipe Outlet to Well-defined
Channel
Filter
blanket
Figure 6.41c Romp outlet protecdm (modlRed from Va MCC).
6.41A
6.6V
Notes
1. La is the length of the riprap
apron.
2. d =1.5 times the maximum
stone diameter but not less _
than 6".
3. Ina well-defined channel ex-
tend the apron up the channel
banks to an elevation of 6"
above the maximum tailwater
depth or to the top of the bank,
whichever is less.
4. A filter blanket or filter fabric
should be installed between
the riprap and soil foundation.
oP PIPE OUTLET PROTECTION
N.T.S.
The purpose of the project is to master plan for a 41.61 acre commercial
development located approximately 13 miles north from the intersection of
NC Hwy 158 and Rte 168 in Currituck County, NC.
Phase I of the High Cotton Towne Center project consist of the clearing
and grubbing of this entire phase of the construction. This phase of the project
requires building and maintaining limited roadways with ditches along the
roadways. Stormwater management is also included in this phase of construction
BMP's will be designed and built to specifications.
To ensure proper drainage, gravel ditches are placed through
out the length of the roadways. Water quality will be maintained
with adequate best management practices (BMP'S) for all phases
of this project.
Approximately 7.49 AC in Phase I respectfully
will be disturbed during this construction period.
EXISTING SITE CONDITIONS
The existing conditons reflect the following, the western part
of the property has approximately 10-15 acres of agricultural
land and is slightly wooded. The northern portion of the site is
bounded by Rowland creek throughout the length of the property.
The eastern portion of the site has approximately 6.5 acres of
open space. There is also a large wetlands area running along
the northern portion of the property where the site ties into rowland
creek.
SOILS
The soil in this area is mapped as Roanoke fine sandy loam.
Topography is nearly level and considered to be poorly
draining soil on broad flats and in slight depressions
along drainage ways.
Typically, the surface layer is dark grayish brown fine
sandy loam 8 inches thick.The subsoil extends to a depth
of 45 inches. The upper part is gray silty clay loam that is
mottled dark grayish brown and dark gray.
Permeability is slow and the shrink -swell potential is moderate
The subsoil is very strongly acid or strongly acid. The seasonal
high water table is at or near the surface.
Most of the acreage of this soil is used for cultivated crops.The
rest is mainly pasture and woodland.
STORMWATER
SEE HYDROLOGY SHEET G-6 AND G-7
ADJACENT PROPERTY
High Cotton Towne Center is bound to the West by Caratoke Hwy. (Rt. 168).
To East High Cotton Towne Center is bound by General Business / Agricultural
properties. To the South High Cotton Towne Center is bound by Walter Poyner Heirs
Agricultural properties. To the North High Cotton Towne Center is bound by Rowland creek
and Agricultural properties.
MANAGEMENT STRATEGIES
Erosion and sediment control should be discussed between the grading contractor and
the owner prior to any excavation so that limits of construction and erosion control
methods are clearly understood by both parties.
Construction will be sequenced so that grading operations can begin and end as quickly
as possible.
There is to be no tracking of mud or dirt by construction equipment onto any paved
drives or roads.
Sediment trapping measures will be installed as a first step in grading and will be seeded
and mulched immediately following installation.
Seeding or other stabilization will follow immediately after grading.
Areas, which are not to be disturbed, will be clearly marked by flags, signs, etc.
After achieving adequate stabilization, the temporary E&S controls will be cleaned up
and removed.
EROSION AND SEDIMENTATION CONTROL PRACTICES
CONSTRUCTION ENTRANCE PRACTICE 6.06
SILT FENCE PRACTICE 6.62
TEMPORARY SEEDING PRACTICE 6.10 & 6.10A
PERMANENT SEEDING PRACTICE 6.11
CHECK DAM PRACTICE 6.68.2
DUST CONTROL IS NOT EXPECTED TO BE A PROBLEM DUE
TO THE SMALL AREA OF EXPOSURE. SHOULD EXCESSIVE
DUST BE GENERATED, IT WILL BE CONTROLLED BY SPRINKLER
PERMANENT STABILIZATION
All areas disturbed by construction shall be stabilized with permanent seeding
immediately following finish grading. Mulch (straw or fiber) will be used on relatively flat
areas. In all seeding operations, seed, fertilizer will be applied prior to mulching.
CONSTRUCTION SEQUENCE
Contractor shall ensure all construction debris shall deposited
in an approved location. Contractor shall ensure that there will be minimum
traffic over the area designated as existing sanitary drain field. Contractor shall
ensure all permits are in place prior to being demolition, instalation
of E&S measures and new construction.
1. Install construction entrance and clean as necessary to avoid
tracking soil onto roadway.
2. Install all silt fence barriers around site perimeter as shown on the plans.
3. Install inlet protection devices as shown on plans.
4. Install culverts and culvert propection measures.
5. Remove utlities as noted on the plans.
6. Reattach all uttilities to phase I structure.
7. Install all sediment raping devices prior to grading.
8. Grade site as noted on plans.
9. Cut gravel ditch in as noted on plans
10. Temporary seeding and mulching to be placed on all disturbed areas
11. Fine grade and permanent seed site.
12. After final grade and permanent stabilization has been achieved,
Contractor shall clean and remove all erosion & sediment control
measures within 30 days of site stabilization.
EROSION AND SEDIMENT CONTROL
1. Permanent or temporary soil stabilization shall be applied to denoted areas
within seven (7) days after final grade is reached on any portion of the site.
2. Temporary soil stabilization shall be applied within seven (7) days to denoted
areas that may not be at final grade but will remain dormant for longer than thirty (30) days.
3. During construction of the project, soil stock piles shall be stabilized or protected
with sediment trapping measures.
4. Stabilization measures shall be applied to earthen structures such as dams, dikes,
and diversions immediately after installation.
5. Erosion and sediment control devices shall be constructed and installed as a first
step in any land disturbing activity and shall be made functional before upslope land
disturbance takes place.
6. A permanent vegetative cover shall be established on denoted areas not otherwise
permanently stabilized. Permanent vegetation shall not be considered established
until ground cover is achieved that, in the opinion of the county engineer or his designated
agent, is uniform, mature enough to survive and will inhibit erosion.
7. Underground utility lines shall be installed in accordance with the following standards,
in addition to other applicable criteria:
a) No more than 500 linear feet of trench may be opened at one time.
b) Excavated material shall be placed on the uphill side of trenches.
c) Effluent from dewatering operations shall be filtered or passed through an
approved sediment trapping device, or both, and discharged in a manner that
does not adversely affect flowing streams or off -site property.
d) Restabilization shall be in accordance with the above notes.
8. All applicable Federal, State and local regulations pertaining to working in or
crossing a live watercourse shall be met.
9. Where construction vehicle access routes intersect paved public roads, provisions
shall be made to minimize the transport of sediment by tracking onto the paved surface.
Where sediment is transported onto a public road surface, the road shall be cleaned
thoroughly at the end of each day. Sediment shall be removed from the roads by shoveling
or sweeping and transported to a disposal area.
10. It shall be the owner's responsibility to inspect erosion control devices periodically and after
every erodible rainfall. Any necessary repairs or clean up to maintain the effectiveness of the
erosion control devices shall be made immediately.
1 1. Additional erosion control devices may be required by the county engineer or his designated
agent if deemed necessary.
12. All erosion control devices shall be in place and functional at all times and if removed for
construction progress, shall be replaced by the close of each workday.
13. Final removal of erosion control devices shall not occur until the county engineer or his
designated agent deems the site stabilized.
14. Permanent seeding is to be in accordance with the accompanying seeding schedule.
15. All erosion and sediment control items shall be in accordance with the latest edition of the
Erosion and Sediment Control Planning and Design Manual by the North Carolina
Department of Environmental, Health and Natural Resources.
16. It shall be the developer's responsibility to inspect all erosion control devices periodically
and after every erodible rainfall. Any necessary repairs or cleanup to maintain the effectiveness
of the erosion control devices shall be made immediately.
17. No disturbed area will be denoted for more than 30 calendar days.
18. All erosion and siltation measures are to be placed prior to or as the first step in grading.
19. All storm and sanitary sewer lines not in streets are to be mulched and seeded within 15 days
after backfill. No more than 500 feet are to be open at one time.
20. Electric power, telephone, and gas supply trenches are to be compacted,
seeded and mulched within 15 days after backfill.
21, All temporary earth berms, diversions and silt dams are to be mulched and seeded for vegetative cover
within 10 days after grading. Straw or hay mulched is required. The same applies to all soil stockpiles.
22. During construction, all storm sewer inlets will be protected by silt traps, maintained and modified
as required by construction progress.
TS TEMPORARY SEEDING
PS PERMANENT SEEDING
Seeding mixture
Seeding mixture
Speciesl Rate(lb/acre)
Species Rate(lb/acre)
Tall fescue 60
Rye (grain) 120
Kentucky bluegrass 10
Annual lespedeza (Kobe in
Sericea lespedeza 15
Piedmont and Coastal Plain,
Korean lespedeza 10
Korean in Mountains) 50
Seeding notes
Omit annual lespedeza when duration of temporary cover is not to extend beyond June.
1. After Aug. 15, use unscarified sericea seed.
2. Where appearance is a consideration, omit sericea lespedeza and
Seeding dates
increase Korean lespedeza to 40 lb/acre.
Mountains - Above 2500 ft: Feb. 15 - May 15
Below 2500 ft: Feb. 1 - May 1
Nurse plants
Between May 1 and Aug. 15, add 10 lb/acre German millet or
Piedmont - Jan. l -May 1
15 lb/acre Sudangrass. Prior to May 1 or after Aug. 15,
Coastal Plain - Dec. I -Apr. 15
add 40 lb/acre rye (grain).
Soil amendments
Seeding dates
Follow recommendations of soil tests or apply 2,0001b/acre
Best Possible
ground agricultural limestone and 750 lb/acre 10-10-10 fertilizer.
Below 2500 ft: Aug. 15 - Sept I July 25 - Sept. 15
Mulch
Mar. 1 - Apr. I Mar. l -May 10
Apply 4,000 lb/acre straw. Anchor straw by tacking with asphalt,
Above 2500 ft. July 25 - Aug. 15 July 15 - Aug. 30
netting, or a mulch anchoring tool. A disk with blades set nearly
Mar. 20 - Apr. 20 Mar. 5 - May 15
straight can be used as a mulch anchoring tool.
Soil amendments
Maintenance
Apply lime and fertilizer according to soil tests, or apply 4,000 lb/acre
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch.
ground agricultural limestone and 1,000 lb/acre 10-10-t0 fertilizer.
immediately following erosion or other damage.
Mulch
NORTH NA EROSION AND SEDIMENT CONTROL
Apply 4,000 lb/acre grain straw. Anchor straw by tacking with asphalt,
REGULATIONS
IONS MINIMUM STANDARD1
netting, or roving or by crimping with a mulch anchoring tool.
A disk with blades set nearly straight can be used as a mulch anchoring tool.
PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE
Maintenance
APPLIED TO DENUDED AREAS WITHIN 7 DAYS AFTER FINAL GRADE
Refertilize in the second year unless growth is fully adequate.
IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL
May be mowed once or twice per year, but mowing is not necessary.
STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED
Reseed, fertilize, and mulch damaged areas immediately.
AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT
(UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION
SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE
THAN ONE YEAR.
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PROJECT NO.:
206023.02
SHEET:
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TRASH RACK �-- 2.5'
#4 BARS
5" O.C. MAX.
2.9 q D.
TOP VIEW
NOT TO SCALE
4•-0" TOP RISER
ELEV.. == 3.0
i
QDIA. VARIES
INV. = SEE TABLE
THIS SHEET WATER QUALITY
VOLUME
DIA. VARIES
LOW FLOW
0'-8" ORIFICE ELEV. = 1.0
} 0,$"
FRONT ELEVATION
N.T.S.
OUTLET STRUCTURE DETAIL
N.T.S.
OUTLET CONTROL STRUCTURE
LOW FLOW ORIFICE
10 YR. STORM ORIFICE
OUTLET CONDUIT
BMP #
INV.
DIA. (in)
NO.
INV.
DIA. (in)
NO.
DIAMETER
1
1.0
2.5"
1
1.53
12"
2
24"
2
1.0
2.5"
2
1.29
12"
1
24"
3
1.0
2.5"
1
1.49
12"
2
30"
4
1.0
3.0"
1
1.33
12"
1
24"
5
1.0
3.0"
1
1.35
12"
2
30"
6
1.0
l 1.25"
1 1
i 1.60
T 8"
3
24"
VARIES
TO BMP
8"
VEGETATED
SHELF
SEDIMENT
FOREBAY
# 57 STONE
3" THICK AT FACE OF
LEVEL SPREADER
OUTLET CONDUIT
FLOW _ 6" MAX.
12"
3'-0" FILTER
31­1:1V / FABRIC
MAXIMUM
SLOPE a G. ° 3000 PSI 24"
12" CONCRETE
GRASSED SWALE >
ENTIRE LENGTH OF _
LEVEL SPREADER 2" - as
#5 REBAR a : KEV
AT 18"O.C. ° "e
16" COMPACTED
SUBGRADE
LEVEL SPREADER DETAIL
NOT TO SCALE
,_ 10 YR STORM
ELEV. = SEE TABLE
THIS SHEET
_ 7 WQ VOLUME N.W.S.
ELEV. = SEE TABLE ELEV =1.0
THIS SHEET
PERMANENT
POOL
3
r
SECTION A -A, B-B, C-C, D-D, E-E, F-F
NOT TO SCALE
POND
ELEVATIONS
BMP #
N.W.S.
ELEVATION
WATER QUALITY
VOLUME ELEVATION
10 YEAR
STORM ELEVATION
_
1
1.0
1.55
2.98
2
1.0
1.29
2.47
3
1.0
1.49
3.04
4
1.0
1.33
2.59
5
1.0
1.35
2.76
6
1.0
1.60
3.01
RISER
STRUCTURE
TOP = 3.0
EMERGENCY SPILLWAY 10
ELEV.= 3.38
TOP OF DAM EMERGENCY
ELEV.= 4.0 SPILLWAY
DESIGN HIGH WATER= 2.38
-(10-YR. STORM ELEV.)
MIN. 1.0'
MIN. 0.5'
7370 C.F./ AC.rn
(3600 REQ'D) ---- T
" DRY " STORAGE l
3711 C.F./ AC.
(3600 REQ'D)
" WET " STORAGE
TOE OF SLOPE
ELEV.= -6.5 _ - _ --
SEDIMENT CLEANOUT POINT
ELEV.= -6.20
4"%4" CONCRETE RISE
6" X 6"
CONCRETE FOUNDATION
_RISER CREST
ELEV.= 3.0
ELEV.= 2.00
ORIFICE DIA.= 4"
.. TUBING DIA.= 6"
DEWATERING
DEVICE
56 L.F. OF 24" CMP
JOINT BETWEEN PVC RISER &
PVC BARREL TO BE WATERTIGHT
SEDIMENT BASIN (SB)
General Notes
ANTI -SEEP
COLLAR
EMBANKMENT TO BE STABILIZED
WITH VEGETATION
1. All construction methods and materials shall conform to the current NC Department of Transportation
Road and Bridge Standards and Road and Bridge Specifications, except where otherwise noted.
2. Materials, methods and procedures for "on -site" (as defined in note 6 below) sewer and water facilities
shall be as per the National Plumbing Code of the Building Officials and Code Administrators (BOCA).
Materials, methods and procedures for "on -site" (as defined in note 6 below) firefighting and fire suppression
water facilities shall be as per the BOCA National Fire Prevention Code and the standards incorporated by
reference in its Appendix A, and the Fire Protection Handbook of the National Fire Protection Association.
3. Measurement and payment for work shall be as provided for in the proposal and/or contract between the
Owner/Developer and the Contractor.
4. These plans, upon which these notes appear, are a communication by the Owner or Developer, prepared by
Resource Intl., describing to prospective bidders and, ultimately, to the Contractor, the location, nature and
extent of work to be performed to construct the project. Copies of the approved plans, and of the current
editions of the references in note 1 above, must be kept on the site at all times during construction.
5. Except where specifically otherwise noted in the contract between Owner and Contractor, Contractor shall,
at his expense, obtain all permits and bonds, pay all fees and charges, and provide all labor, equipment,
materials and supplies so as to accomplish the work described by these plans.
6. "On -site" work shall mean work not lying within the street right-of-way, or within any drainage or utility
easement, of the County of Currituck. Except as expressly noted in other general notes or on the plans of
which this sheet is part, on -site work shall be performed using the some materials and procedures, and to
the some standards as work in public right-of-way o- easement, including the requirements for pressure and
hydrostatic testing of water and sewer mains, respectively. In any case where a provision of the "design
criteria" call for a determination concerning the work to be made by "the Engineer", or County or its
authorized representative, or similar term, that term shall be replaced with "the Owner or his designated
representative" in the case of on -site work where the County does not exercise jurisdiction.
7. "A Land Disturbing Permit" is required. Prior to construction within the right-of-way, the Contractor shall
obtain a right-of-way permit from the NCDOT Department of Transportation. A traffic control plan shall be
provided for review and approval. The Owner/Developer or their representatives shall provide an itemized cost
of the work within the right-of-way.
8. Currituck County has strict provisions which require certifications by registered professionals. Unless the
Contractor has expressly verified with the Owner that the Owner is arranging for these certifications to be
made, the Contractor shall make arrangements with a Professional Engineer to perform such inspections and
tests to be able to make the certifications. Resource Intl. will not make such certifications unless we have
been retained in advance to do so and have made the necessary inspections.
9. The Contractor shall be responsible for replacing with matching materials any pavement, driveways, walks,
curbs, etc. that must be cut or that are damaged during construction.
10. The information shown on these plans does not constitute any guarantee as to the existence,
non-existence, size, type, location, alignment or depth of any or all underground utilities or other facilities.
Where surface features (manholes, catch basins, valves, etc.) are unavailable or inconclusive, information
shown may be from utility owner's records and/or electronic line tracing, the reliability of which is uncertain.
The Contractor shall perform whatever test excavation or other investigation is necessary to verify tie-in
inverts, locations and clearances, and shall report immediately any discrepancies to Resource Intl. at (757)
873-7711. Utility companies shall be notified 48 hours in advance of any excavation in the proximity of their
utilities. The Contractor shall be responsible for repairing ct his expense any existing utilities damaged during
construction.
11, Elevations as shown hereon are in feet and are based on National Geodetic Vertical Datum unless
otherwise noted. The Developer shall be responsible for the correction and/or resolution of all conflicts
between in -place utilities and all improvements called for by this site plan, both on the site and in all
County and or state rights -of -way to the front, side and/or rear of the site.
12. The Contractor shall be required to excavate below plan grade any materials which are unsuitable for
foundations, subgrades, or other roadway purposes and backfill these areas with an approved material. The
extent of undercutting and backfilling shall be determined by a County Inspector and/or a Geotechnical
Engineer employed by the Owner.
13. Clearing and grubbing shall be performed to limits shown on these plans; Where no clearing limit is
shown, clear to 10' outside of limits of roadway/pavement construction, pipe trenches, and similar site
improvements, and 20' outside limits of building constriction not to exceed the property line. Existing trees
that are to be retained after construction shall be protected during construction.
14. Traffic and lane markings for on -site work shall be traffic paint ("Type A Markings") as set forth in
NCDOT Road and Bridge Specifications; Colors shall be blue for handicapped parking; Yellow to delineate drive
aisles and fire lanes on curbs and pavements, and white elsewhere. Parking space lines and other lines if not
otherwise noted, shall be 4" wide white lane striping.
15. In the absence of slope or grade information, the following minimum standards shall apply: On -site
sanitary sewers, 4" and 6' 1.04%, 8", 0.527 Sanitary sewers in easement or right-of-way. 4", 1,07, 6", 0.63
7, 8", 0.4% Curb & gutter or valley gutter, 0.25%. Asphalt concrete pavement, 0.5% longitudinally in swales:
1.0% cross -slope. Portland cement concrete pavement, 0.3% longitudinally in swales: 0.5% cross -slope. Storm
sewers, less than 24", 0.25% 24" and over, 0.15%
16. In the absence of slope or grade information, the following maximum standards shall apply: Vehicular
pavement, 2.0% longitudinally or cross -slope. Pedestrian areas (sidewalks): 2% longitudinally, 2.0% cross -slope,
or compliance with Americans with Disabilities Act, whichever is flatter.
17. All drainage structures inverts shall be shaped per North carolina Department of Transportation standards.
18. Storm sewer pipes as shown on the plan view ore measured from the centerline of each structure. Invert
elevations are established based on this centerline distance. Length callouts for pipes with flared end sections
will be measured to the joint. Contractors shall locate all end sections to match the bank with lengths
adjusted as necessary and the pipe slope shall remain as per the plan.
19. All storm sewer pipes shall be reinforced concrete tongue and groove conforming to ASTM C-76. Concrete
pipes subject to traffic load and all pipes within street right-of-way shall be Class III. Concrete pipe joints
shall be sealed with a ring of mastic -type material such as RAM-NEK, RUBR-NEK or BUTYL-T1TE, installed per
manufacturer's recommendations, and conforming to ASTM C-76. Clearance of 12" between storm and other
utilities is required unless otherwise noted.
20. Curb & gutters shall be constructed in sections of uniform lengths, approximately 10 feet, as necessary to
form closures. Expansion joints shall be formed ct intervals of approximately 120 feet using 5/8" premolded
bituminous fiber joint filler.
21. On -site exterior concrete is to be a minimum of 3000 P.S.I. with five to seven percent air entrainment.
22. Unless the plans specify another material, all sanitary sewer gravity lines shall be DI Pipe, Max. SDR of 26,
ASTM D-3034 or ABS composite pipe with solvent cemented joints. PVC joints shall conform to ASTM
D-3212-73-T, "Joints for Drain & Sewer Plastic Pipes ising Flexible Elastomeric Seals."
23. Sub -surface utility warning tape as manufactured by the Griffolyn Company or equal shall be placed at an
elevation not less than 6-inches nor more than 12-inches below the proposed finished grade above
non-conductive sewer, water and sewer force mains in public rights -of -way or easements. The tape shall be
of a durable, metalized, plastic film similar to "Terra Tape D" for identification by Electronic Pipe Locating
Device as well as visual identification. The tape for sewer force main line shall be bright green with the
following imprinted legend "Caution - Sewer Line Below." The tape for waterlines shall be bright blue with the
following imprinted legend "Caution - Water Line Below."
24. For water, storm & sanitary lines laid on curves, deflections shall not exceed manufacturer's
recommendations.
25. A minimum vertical separation of 18" shall be maintained between sanitary sewer & water lines and a full
joint of water line pipe shall be centered on crossing where water line crosses over sanitary sewer. Where
clearance is less than 18" but greater than 12", sanitary sewer shall be pressure tested ductile iron pipe 10'
from watermain. When water line crosses under sanitary sewer, 18" minimum clearance must be maintained,
and sanitary sewer shall be pressure tested ductile iron pipe 10' from watermain.
26. All water & force mains shall be ductile iron, all fdtings and cast or ductile iron pipe shall be cement
lined cast or ductile iron class 150/22 and manufactured in accordance with AWWA C106 (pipe) and ANSI
21.10 (fittings) except where otherwise noted. Water and sewer force mains shall be laid with a minimum cover
of 36 inches.
27. All utilities to serve this site shall be placed underground.
28. Private and public utility relocations shall be performed by the Owner's Contractor, under County inspection,
at the Owners expense.
29. The property Owner is responsible for the maintenance of all site improvements (other than those
expressly noted as to be conveyed to the County), including landscaping, as shown on the approved site plan.
30. The Contractor shall be responsible for installing or replacing all required pavement markings within the
right-of-way, as noted on these plans.
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PROJECT NO.:
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SHEET: