SW8950504_APPROVED PLANS_19950609

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8"1505C,4
DOC TYPE
❑ CURRENT PERMIT
E APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
19C1S o1,pC)
YYYYMMDD

L OCA PON MAP
IMPERVIOUS AREAS CALCULATIONS:
A. 4,705 LF road ® 20' pvmt + 2'shldr = 103510 sf = 2.38 acres
Extra impervious in cul-de-sacs = 12,650 sf = 0.29 acres
Total road areas = 2.67 acres
B. Overall development acreage = 49.225 acres
C. Percent allowable built upon ® 30% ( CSw waters) = 14.77 acres
D. Total impervious for lots ( ® 7400 sf maximum/lot) = 11.89 acres
E. Total built upon area = 2.67 + 11.89 = 14.56 acres < 14.77 acres
LAND DISTURBING ACTIVITY AREAS:
A. 4,705 LF road ® 120' width = 564,600 sf = 13.0 acres
B. 1,700 LF new ditch ® 30' width = 51,000 sf = 1.2 acres
C. Total disturbed area = 14.2 acres
1 30' 1 1 i t
36"max
24"max
000*W11)
15' d50= 6" d50= 3"
dMAX= 9" g' dMAX= 5"
ROAD __ -- Onotl APRON= 1.5 ROAD 0 0 APRON= 1
CROSS -CULVERT CROSS -CULVERT
OUTLET PROTECTION DETAIL OUTLET PROTECTION DETAIL
NOT TO SCALE
CULVERTS 4 and 8
2' WIN 12.5'
_ 3
l I
l
1
3 '1
5'
TD DETAIL TEMPORARY DIVERSION
Practice 6.20
EROSION and SEDIMENT CONTROL PLAN
MERRYWOODS
NORTHWEST TOWNSHIP BRUNSWICK COUNTY
NORTH CAROLINA
OWNER: VERN LAND LIMITED
,J
DATE FEBRUARY 17 19
'
'
95 J�
NOTE:
THIS PLAN TO BE U17LLI20 AND
REVERED ONLY IN CONJUNC770N
NTH THE NR/TTEN NARRAIIW,
KH/CH IS AN INTEGRAL PART OF
THIS EROSION AND SEDIMENT
CONTROL PLAN.
NOTE: This plan Is for sediment
and erosion control purposes
only.
OP
\UL 1„�Ma
y'y ro^. � ' , PJC.
GC ,•' v
;ST
v ry r?
Pv _� �' ♦♦ 'ail .- Y � ~
�. etiA9 16fA �J ♦ _ �\:
Ig2 Bap
6 �sL,c
,� ti MT RIGyr of
-MiSFRY wq y
o
CULVER �
DRAINAGE AREA "C"
Tc
1(10)
Q(10)
SIZE
1
1.1 acres
0.35
5 min
7.0
2.7 cfs
18"CMP
2
5.0 acres
0.35
10 min
6.0
10.5 cfs
24-CMP
3
2.3 acres
0.35
5 min
7.0
5.6 CIS
18"CMP
4
24.5 acres
0.35
20 min
4.5
38.6 cfs
36"CMP
5
3.5 acres
0.35
10 min
6.0
7.3 cfs
18"CMP
6
7.9 acres
0.35
15 min
5.0
13.8 cis
24"CMP
7
4.5 acres
0.35
10 min
6.0
9.5 cfs
18"CMP
8
52.8 acres
0.35
30 min
4.0
73.9 cfs
36"CMP
30'
0 CULVERT 8
Q(10)= 73.9 cis
V(10)= 2.4 fps
Y(10)
S= 0.33%
Y(10)= 2.4'
®CULVERT 4
Q(10)= 38.6 cfs
V(10)= 1.7 fps
5'
3
S= 0.20%
Y(10)= 2.0'
NUI IU SGALt .--� T 68IN
7,. (- •co � � ��
ALL OTHER CULVERTS ti
.-r- - - --
46
/�,
69
E.C.M.
r/fir INDIAN CREEK ESTATES ,( y5- / OP�� / �/// \ �7Q j
/ MAP CAB. R PG. 18 �i 3 /" %'3 ;' ` P / . f
/ , r \'y /
LOT 9 /j LOT 8 I i 873-133 I ' N ryr. % ♦♦ - / /v-1: h19 i'rST♦ / \ I 6 �/� LSD 2
47 _ _fie, /
N 89'30'00"W 996.44 TOTAL ACM, 1 " /' �.1 O' TD \
79.88 F 200.15 Fi 156.77 / ' / ory S
4a/ 559.64 , ♦'♦ ti . �e
O!Osra ,4tifJ�ha�9 6 \ //•� i
\ 1` \ /
AF t I I I i 1 4 6 \ `\. V\ Goo 6 ' )I" ,SJ ! / /
-I
\ 11 ( 10 I g I g ( I 6 OP ; 5 \ j' ST ,6A`� �♦ 60 ------
t 7 ---
12 1 1 ST-4C / ST-4D "
-------�-- -----L----------1----
-i C I --
` / - p9G �_ _ MERRYWOOD DRIVE .-. :...:.:::,.; �.�T.� \\\�GC / ; / I
- 5 \
LEGEND ♦ -- -- ---"` ;/TD \ /' ��t �� 51 3 __$a_ _p__ _J h� MERRYWOOD DRIVE - 2460t LINEAR FEET
t - - -� 58
49.3 4 �- O \ sD' R w
Q NEW WATER SERVICE LINE WITH METER \♦ �♦ / �-'�" Iss.ts - -- --- - -- LOW O ---�c4 64 �.'/ w `v 61 , - " WATER o WEST BUCKWOOD COURT - 570t LINEAR FEET
W \�
_ ♦ `' -+. i \ ] / �\ ST-5 / N EAST BUCK WOOD COURT - 490t LINEAR FEET
PROPOSED WATER MAIN (WITH SIZE) Q� o \ 7( , J/� - O - _ -h
to
rr �" r -- -1 \ ' 'S �� a TALL TREE LANE - 360t LINEAR FEET
-►4- GATE VALVE WITH BOX , of 1( - - , 1 Fist _ \� \ ` 57 TYPICAL CUL-DE,,SAC
�_. - / ` m17 J , \ ::;:.:.. LONE TREE COURT - 415f LINEAR FEET
FIRE HYDRANT w / b I do s / \ fj • ::c A :f
o So --- 1- -1l' 41' TD ST-3 ' I }i ST-4A \ \ t� \ '/ \ i~ SINGLE TREE COURT - 410t LINEAR FEET
BLOW -OFF ASSEMBLY ._ 13 % / �w l ( ( i I / 36 MPD t TD / IN
\ \ \ �� OP ti .. G6 so \` 50' R\w
W I 41 y\ \ O s 56 . TOT. ROAD LENGTH -' 4705t LINEAR FT. NOT TO SCALE
PROPOSED DRAINAGE ROUTE / / �♦ 30 31 `, I I a I 39 - W 1' I CULVERT - �• ` '�` .' °J a 1 . -.
E.C.M. -EXISTING CONCRETE MONUMENT N / �/ II o 3$ a I l I IE= 43.3 \ ^ \ 63
- ` ` ♦ ( O, 1 m / 1 / t / / /. \ ,: \ \`` / `�OO Q OQ GItQ�� ..OLDS 50' R/W
E.I. = EXISTING IRON 0 _ I $ I ) j 1 / 40 t / ; \ \ \ \ \ O O ;� V iF 69 \ '10 TONE CONSTRUCTION SCkEDULE - C�
W , / �� •.: G')� Indicated on Plan
LS. = IRON SET / - z W �� I •I GC
t \
14 1 I �� 29 I ` } t- _ _ _ -► , , _ I rS \ \�� �� \ 55.- 1. Obtain approval of Plan and an necessary permits, and hold a 8' 10' 10' 6' 6'
'7ar-------, to T-----_ 'tL \Q. / pre -construction conference prior to commencing any work.
O \ 32 Z' O GC .• _ ,/ , \\ \ ' __ ,` 11 / - -. -- . - - \\ 2. Flag work limits and stake out roadway, primary ditches, and
2 -I a �`� �L �G, 54 \ Jf Sediment Trails for preliminary grading.
37 - / / / `� / k/} - / 3. Install Gravel Jonstruction Entrance. 1 S OP
43 ` �O ,9' 4. Install Sediment Traps as shown on Plan 2
/ P prior to clearing and
/ \ 6 grubbing only areas to be disturbed. WATERLINE M
N , �/ / �6 / \ \ 0 TO HAVE
15 I , ry _ _ _ , 1 \ J �, , \ 53 6�9' / A MIEN. OF 3' OF COVER
I w 28 1 2 _ 1 1 \ %/ ! 5. Construct dilc+les and any other sediment control Practices
- _ 33 - - (7 I 44 \ Gj� �'' �' S7 fro shown, prior to rough grading roadways and site, stockpiling
` 1 i \C. 01 �' ♦ \ ti; material and topsoil as necessary. Culvert crossing areas
I a \ / yl` should be stabilized with stone base course as soon as
1. / / \ / � \ t, �/ constructed.
I I / i l r \ � 6. Install //' ♦`-M1 \ 36 V\ 45�� I tall utilities n roadway, establish final road grades and
1 _- ♦ i / n \.� stabilize remcinder of road with stone base course.
G I PROPOSED 27 I '' �' - / ,/ ,� `�\\ 6� / % 7. Vegetatively s abilize areas where building construction is
C � � \ 9
16 2 1�. ° I24" CMP 34 \ GC �'/ �� �\ x/' 51 not Imminent
O . CUL .- / '.�
vfD IE= 4gRg..--.. '.DRAINAGE AND / ♦♦ if i -'1°� \`v GC /'` .�'/ /' // ♦ 8. All erosion ani sediment control Practices are to be inspected
\-� -'� UTIU .EASEMENT- 35�'- �` / Ory v� \ ` weekly and oiler any rainfall, and repaired as necessary.
1 f;: 2p•- _ / - i% 1f.® /j' !S 9. Upon completi,n of budding construction, the roadwayIs to be
v
j/ ; 'I ♦♦ paved and all areas permanently vegetatively stabilize. After
GC i 0 46 50 site stabdizaton, temporary measures are to be removed.
I 17 1 I-_ST-2� / . '6 W.4 .`44.7 NO,
� 483
i� R `W \♦ / 49 `♦ PLANNED EROSION AND SEDIMENT CONTROL PRACTICES -
i 1 / i hop \` ♦ © 1. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
TYPICAL DITCH SECTION
NOT TO SCALE
GC
NOT TO SCALE
CURVE
DELTA
RADIUS
ARC CHORD
TANGENT
CHORD BRG
C8
15'35'02•
230.00
62.56 6Z36
31.47
N 081731• E
C7
551,16,
250.00
25.55 25.53
12.78
S 5125'38' W
C6
14.40'04'
230.00
58.88 58.72
29.60
N 47'01'14" E
C1
25'38'47"
310.00
138.76 137.60
70.56
N 40'45'52' E
C2
1619'20'
310.00
58.31 88.01
44.46
S 4525'38" W
C3
30,05,03,
310,00
162.77 160.91
83.31
N 5218'27" E
C4
23.09'01"
31000
125.25 124.40
63.49
N 7855'30' E
C5
84'06'57'
310.00 •
455.11 415.33
279.69
s 482831" W
LINE BEARING
DISTANCE
L2
N 2756'29" E
40.00
Lt
N 2756'29" E
40.06
L3
N 3715'56' E
58.26
U
Z
ZM
ma
J
t5-
j
Q
00 to
�1�
rl0
S
1 o
10
i 662603E
3j'T 65
k NAIL
SLOPE I PER FT.
i'FER FT. SLOPE FT.
¢'7
q 1 1/2"I-2 s40'''F
f'- 13 61
(ALL SECONDARY STREETS)
TYPICAL STREET DETAIL
NOT TO SCALE
60' R/W
C/L
8' 10' 10'
SLOPE I 'PER FT.
1 26 I 2y / v Practice 6 06 6 ROAD STABILIZATION
PROP o c
' i ♦ O CONSTRUCTION
18" PROPOSED I � / _,,,,- Practice 6.80
CMP , ?�,
� O
PER FT.
J
I
O•
A
/ CULVERT 4 Is away n 2 1/ 1-2 F
7 r \ 60 S e installed at a entrance of d SLOPE ' S
, � hall b n d the r he propose .1 •� <p ry
_ S` `� ' °O roadway (Merrywood Drive) from Highway 1426. Drainage ' wa Upon reaching final grade and otter utilities have been 1 2" \ 'o
_ IE= 47.5 /-� 1 f ' F! Ste. `� ♦\ I, O00 from the road and sedimentation will be controlled with installed, roadway is to be stabilized by placing sub -base 6" CRUSHED
11 ST ,t 6� �'� downstream practices. During wet weather it may be necessary course of approved 6" ABC stone, as shown in the typical WATERLINE MAIN TO HAVE STONE
_ _ y ST-1 _ i `Z4 OF ` `f8 � t` �QO to wash truck tires at this location. street cross-section detail on the Plan, to reduce erosion and A MIN. OF S of COVER 13•
If, /
114.9 T �-���----- ----. J `� � O dust during the remainder of budding colstruction. APPROVED 61
679-073 2 LAND GRADING 99 ` NORTH CAROLINA ENVIRONMENTAL
wwr>heii.,� Oa `� • ` -
SINGLE T EE OURr `
21 22 ► 2� s
1 - I
N 87'15'00"W 558.00
L.C. GREENE
134-187
VEGETATIVE PLAN -
1. Permanent vegetation to be established in accordance with
"North Carolina Erosion and Sediment Control Planning and
Design Manual", Section 6.11. latest version.
THIS TRACT OF LAND IS NOT IN A SPECIAL FLOOD HAZARDOUS
AREA ACCORDING TO THE NATIONAL FLOOD INSURANCE RATE MAP
COMMUNITY PANEL NUMBER 370295 0040 C PANEL 40 OF 395.
(DATED MAY 15, 1986)
SEDIMENT TRAP SIZING: Surface Area (SA) for Traps = vol / 0.4 d
NUMBER
DA
VOLUME
WEIR L
DEPTH
MIN.TOP(SA)
acres
cf
it
it
DIMENSIONS
ST-1
1.1
1980
6'
3'
40'X 40'
ST-2
5.0
9000
12'
5'
67'X 67'
ST-3
2.8
5040
8'
5'
50'X 50'
ST-0
0.7
1260
4'
3'
32'X 32'
ST-4B
0.4
720
4'
3'
25'X 25'
ST-4C
1.0
1800
4'
3'
39'X 39'
ST-5
3.5
6300
10'
5'
56'X 56'
ST-6A
0.7
1260
4'
3'
32'X 32'
ST-68
0.3
540
4'
3'
21'X 21'
ST-6C
0.4
720
4'
3'
25'X 25'
ST-6D
0.3
540
4'
3'
21'X 21'
ST-7
4.5
8100
12'-
5'
64'X 64'
•' Fi
TATE
486-130
MAINTENANCE PLAN -
Indicated an Plan
I. All measures to be inspected weekly and after any rainfall
event and needed repairs made immediately.
2. Sediment Tropss to be cleaned out when the level of sediment
reaches i/2 the design depth, or 2' below weir elevation.
3. Sediment to be removed from ditches when they are
approximately 50X filled or sediment level is within 2' of top
of ditch bank.
4. Sediment to be removed from behind the any Silt Fence and
Inlet protection devices when It becomes 0.5 deep. Fencing Is
to be repaired as needed to maintain a barrier.
5. Inspect permanent stream crossings periodically and after
major events for channel blockage, abutment erosion, rip -rap
displacement, slope failure or piping, and make all needed
repairs Immediately.
6. All seeded areas shall be fertilized, mulched, and re -seeded
as necessary, according to specifications provided, to
maintain a suitable vegetative cover.
Practice 6.02
Grading should be limited to areas as shown on the Plans.
Cut and fill slopes shall be 3:1 or flatter except where
specifically Indicated. Core sholl be taken during land
grading activities not to damage existing trees except where
necessary.
Q 3. SEDIMENT FENCE
Practice 6.62
Sediment fencing should be installed as shown on the Plan,
and around any temporary stockpile areas as necessary to prevent
any graded Interior areas from eroding onto adjacent lands or
roadway.
GC 4. GRASS -LINED CHANNELS
Practice 6.30
All ditches and channels to be graded to design
configuration, seeded, and stabilized if necessary with
-
temporary straw -net liners to collect and convey site water as
shown on Plan. After final project stabilization, ditches to
be re -graded and cleaned of siltation as needed to establish
original contours for stormwater conveyance.
OP 5. OUTLET STABILIZATION
Practice 6.41
Riprop aprons will be located at the downstream end of
oil discharge pipes to prevent scour.
� IU 7. SEDIMENT TRAPS MANAGEMENT COMMISSION
Practice 6.60 DIVISION OF ENVIRONMENTAL MANAGEMENT MERRYWOODS DRIVE
Sediment Traps are to be installed as shown on the DATE 10-9 19 `►5 TYPICAL STREET DETAIL
Plan to receive runoff from disturbed areas, and are the `��Q q
primary practice to contain sediment, pr or to stormwater STORMWATER CERTIFICATION NO 5v18 45�50�{ NOT TO SCALE
entering wetlands areas or leaving the site. Traps are to be
sized as shown on the Plan.
NOTE:
TD 8. TEMPORARY DIVERSION 1. FOR REFERENCE SEE DEED BOOK 364 PAGE 753.
Practice 6.20 2. SURVEYED IN DECEMBER OF 1994.
3. AREA COMPUTED BY COORDINATE METHOD.
Diversion dike/channels are to be installed where 4. ALL DISTANCES ARE HORIZONTAL.
Indicated on the Plan to divert sediment laden runoff to the 5. MONUMENTATION AT PROPERTY CORNERS AS INDICATED.
proposed Traps as shown, and to prevent runoff from upstream, 1 2 C E j�� 6. TOTAL ACREAGE 49.225
undisturbed ores from entering onto disturbed areas. 1tU1^1�[) 15 lal U 7. ALL STREETS ARE TO BE PUBLIC
8. TOPOGRAPHIC INFORMATION BASED ON AN ASSUMED BENCHMARK.
PSC 9• PERMANENT STREAM CROSSING MAY C 9 1995 9. INDIVIDUAL SEPTIC SYSTEMS & PUBLIC WATER PROPOSED.
Practice 6.71 IO.MERRYW00D DR. IS TO HAVE A 60 FT. R/W ALL OTHER STREETS
Several large culvert crossings are to be constructed and D E M ARE TO HAVE A 50 FT. R/W.
sized as shown on the Plan, to convey stormwater runoff from PROD 11.MINIMUM LOT SIZE WILL BE 20,000 S.F.
upstream, undisturbed ares in the existing, natural, well- 13.LOTS 69 & 70 TO HAVE JOINT DRIVE FROM S.R. 1426
defined channels, across the roadway, to existing outfolls.
These drainageways are not perennial, flowing streams, but
care should be token to construct the crossings as quickly as
possible, during dry weather, and stabilize vegetatively o<
withrHANOVER DESIMSERVICES P.A.
with rip -rap if necessary as rapidly as is feasible. r
LAND SURVEYORS ENGINEERS, LAND PLANNERS
100' 50' 0 100'
3igWALNUT STREET WIL T T
WiLMINGTON, N.C. 28401
SCALE IN FEET PHONE: [phone]
100 2766SC2-95DH
}