SW7110101_APPROVED PLANS_20010113

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
Sw �dlO 1
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
5

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DRAWING INDEX
r-. A /-N T COVER SHEET
C-001 SITE - UTILITY PLAN
�'� C-002 GRADING EROSION AND STORMWVATER J r
�S/1F C-003 DRAINAGE IMPROVEMENTS OFF SITE
_04 DETAILS
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SITE PLAN NOTES:
OWNER: W.E. PARTNERS II, LLC
BUILDING SIZE: 12670 SF
PROPERTY SIZE (LEASED AREA): 4.07 AC
UTILITIES:
WATER LINE - PERDUE FARMS EXISTING WATER LINE
WASTEWATER - PERDUE FARMS - ONSITE SPRAY IRRIGATION
WASTEWATER SERVICE: 2" FORCE MAIN
WATER SERVICE: 2" SERVICE LINE
ELECTRIC SERVICE- DOMINION POWER
NEW TRANSFORMER PAD TO BE LOCATED
OUTSIDE BUILDING AS SHOWN
ALL NEW SERVICES SHALL MEET ALL
NC BUILDING CODE REQUIREMENTS
ALL EXISTING UTILITIES ARE SHOWN
BASED ON FIELD EVIDENCE AND AS BUILT MAPS
PRIOR TO ANY DIGGING NC ONE CALL SHALL
BE CALLED AND CONFIRM LOCATION AND SIZE
OF ALL EXISTING UTILITIES.
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NEW 2" SEWER
FORCE
MAIN
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10'X10' CONCRETE
PAD FOR TRANSFORMER /
POWER COMPANY TO ,
PROVIDE NEW TRANSFORMER
480 V - 1000A /
W
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BASIC SITE LAYOUT OF EXISTING FACILITY PROVIDED BY: ORIGINAL BOUNDARY AND A PORTION OF THE TOPO PROVIDED BY:
For . Ihb &wyq ConW MrA Survey Prepared By:
ENGINEERS/ARCHITECTS ,ofLM Smith Surveyors, Inc
Mem Hwy
ii 11k 41U- A 8593 Commerce Court — Warrai6on, NigtNo 20187 6907 C Calhoun Easley, SC 29640 M�.".
1942 NORTHWOOD DRIVE SALISBURY, MARYLAND 21801-7824 PhowJ510)448-3550 Fax:(5Q)M-3560 Phone: [phone] -Tim
PH. [phone] FAX. [phone] A National Land Services Group rwaAIk"Bodotal.can Fax: [phone]
Website.www.smithsurveyor.ne I
30
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PROP. SPOIL PILE
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110 I
N I t
PROP.
BUILDING
36
ASPHALT SURFACE
O H E
100.5
200
PROP. BIO
RETENTION
PROP. DIESEL STORAGE
50' CLEARANCE REQUIRED
NEW STEAM LINE ON
OVERHEAD BRIDGE
24 -
4 7'
PROP. 10' X 32'
CONC. DUMPSTER PAD
FOR ASH CONTAINER
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128 Abbey Lane
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252-945-2983
[e-mail]
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NEW
W/ 15" STUB OUT NEW 18" RCP
�✓/FES
GRIFFINS QUARTER ROAD AND FES
SR 1134 INV=78.3
f SITE PLAN _
SCALE: 1" =50'
50
INV OUT = 77.84 W/
OUTLET PROTECTION
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Scale: 1" = 50'
Sheet No.
C-001
"

DRAINAGE NOTES
TOTAL SITE AREA DISTURBED =5.27 AC
TOTAL DRAINAGE AREA = 4.07 AC
TOTAL IMPERVIOUS AREA = 2.53 AC
% IMPERVIOUS = 62%
ALL EXISTING SITE WATER SHALL BE GRADED TO DRAIN AWAY FROM
THE IMPROVEMENTS. ALL PROPOSED IMPROVEMENT AREAS SHALL
DRAIN INTO THE PROPOSED BID RETENTION AREA. OFFSITE DITCH
IMPROVEMENTS ARE BEING MADE TO AID IN DRAINING THE OUTLET
WATER.
Provide a ground cover ( temporary or permanent on
exposed slopes within 21 calendar days following
completion of any phase of grading; and a permanent
ground cover for all disturbed area within 15 wortcing
days or 90 calendar days ( whichever is shorter)
following completion of construction or development.
® There are no apparent wetlands within the project area.
1' MINA{ (--ry
4' MIN
ll I I ,._D. TOP OF BERM 81.]5 � FREEBOARD
TOP ELEV OF STCRMWATER
EROSION CONTROL CONSTRUCTION SEQUENCE R°� STORAGE ZONE 0WAB ED STONE 2 pAX
5' SEDIMENT STORAGE LDNC I• I \ /
(TOTAL BA9N CAPAGTY)
1. OBTAIN AND POST COPY OF CERTIFICATE OF EROSION CONTROL PLAN - 1•-6' MAX smMENT DEPTH I \\
APPROVAL. \
2. CLEAR SITE ONLY AS NECESSARY TO INSTALL EROSION CONTROL DEVICES CLASS "e^
RIP —RAP
AS INDICATED ON THE DRAWINGS OR SPECIFIED IN THE SPECIFICATIONS. EXCAVATED DIMENSIONS AS
3. ONCE EROSION CONTROL DEVICES ARE INSTALLED, BEGIN CONSTRUCTION SHOWN ON PLANS
OPERATIONS. SECTION THRU BASIN & FILTERS' / \
4. MAINTAIN EROSION CONTROL DEVICES AS NECESSARY DURING
CONSTRUCTION. INSPECT DEVICES AFTER EVERY RAINFALL EVENT AND TOTAL BASIN CAPACITY
CLEAN OUT TRAPS AND /OR CHECK DAMS WHEN HALF FULL. CLEAN BASIN WHEN MAXIMUM %� \
LEVEL OF SEDIMENT IS REACHED.
5. AS CONSTRUCTION PROGRESSES, INSTALL ADDITIONAL EROSION CARRY RIP RAP UP 1
CONTROL DEVICES AS INDICATED ON THE DRAWINGS, CALLED FOR IN THE SIDES OF SPILLWAY
SPECIFICATIONS, OR AS NEEDED OR DIRECTED BY ENGINEER.
6. SEED AND MULCH DISTURBED AREAS AS STATED OAS SHOWN
N PLANS 1'-0' MIN
7. AFTER SITE IS STABILIZED, REQUEST AN INSPECTION BY HE ENGINEER. � FREEBOARD I \ 1 \
UPON APPROVAL OF SITE STABILIZATION, REMOVE TEMPORARY EROSION E TO EXIST.
DEVICES, DRESS OUT AREA AND SEED AND MUCH. PERMANENT EROSION #5 WASHED STONE GRADE
CONTROL DEVICES SHALL BE INSTALLED AND APPROVED BY ENGINEER. M
FILTER FABRIC `.
P RSP Ti I �I DRAINAGE MATS STORM WATER ®
SECTION THRU BERM & FILTER _ J
CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 4 INCHES DEEP _ 1
OVER ADVERSE SOIL CONDITIONS, IF APPLICABLE. TEMP. SEDIMENT TRAP DETAIL
RIP THE ENTIRE AREA TO 6 INCHES DEPTH. Scale: Not To Scale:
PROP.
REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE BUILDING
REASONABLY SMOOTH AND UNIFORM. 1-1- C O J CCr nCr�
APPLY AGRICULTURAL LIME, FERTILIZER, NAD SUPERPHOSPHATE UNIFORMLY AND I w 4 I \
MIX WITH SOIL. g 3
3 � �
CONTINUE TILLAGE UNTIL A WELL -PULVERIZED, FIRM. REASONABLY UNIFORM LIME
PoTN TOP BERM ?
SEEDBED IS PREPARED 4 TO 6 INCHES DEEP. ELEV"at 6 r — F O I C002
U.
SEED ON FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH 02 \
SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING. DITCH AND B Y d
FILTER FABRIC FILTER FAbP1C EDGE b -j
1 1 Y[XE LEHGTM - IDS (MIN. 12' OF FABNC)
MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. B0'82 WEIR DETAIL I /'
I I Aorhis 11
INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDING I DRAINAGE AREA
WITHIN THE PLANTING SEASON, IF POSSIBLE. IF STAND SHOULD BE OVER 1 LIMITS EROSION CONTROL
60% DAMAGED, REESTABLISHED FOLLOWING ORIGINAL LIME, FERTILIZER AND /I P 83
SEEDING RATES. /
I------------
i
NOTE: �- LIMITS OF
CONTRACTOR SHALL PROVIDE A PERMANENT SEED COVER ON ALL AREAS ® EMERGENCY SPILLWAY DETAIL DISTURBANCE
DISTURBED DURING CONSTRUCTION OPERATIONS, INCLUDING ANY DISTURBANCE TO Scale: Not To Scale:
THOSE AREAS THAT WERE SEEDED DURING PREVIOUS WORK.
1 1
ALL SPOT ELEVATIONS SHOWN ARE TO TOP OF PAVEMENT UNLESS NOTED ` \
ENTRANCE9
DRAINAGE INFORMATION a \\\
4- -
natemi INK Rvtoctim Under Soot TIM (N.1.5)
1 6� �• "•j \
s 1
I az \
AREA NUMBER 1 ati.:�r��— 1 TEMPSEDIMENr®Fs
Meet s... X.� TRAP
pn I
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DRAINAGE AREA AC 4.07
BID RETENTION AREA `. 0004
j., .. ........ / f 18006 SF®
IMPERVIOUS AREA 2.53
SPOIL AREA
o o CONSTRUCTION
WATER QUALITY 13526 cf® l " �� I� ENTRANCE
VOLUME TT INLET PROTECTION ION TYP EMERGENCY SPILL WAY ' STRUCTURE "
Is Rr•.
IN _ _
( Scale: Not To Scale: SEE DETAO / INV RIM 78 21 INV OUT - 77,21 — o
BM = 80.60
EXIST. NC DISK _ ¢ r�% ©SIZE 4X4
Temoorary Seeding
Pianhrm Dates
Grass Tvce
Dec. 1 - Apr. 15
Rye (Grain)
Kobe Lespedeza
Apr. 15 - Aug. 15
German Millet
Aug. 15 - Dec. 1
Rye (Grain)
Ume
Fertilizer
10-10-10
Mulch
Straw
1. Permanent Seeding
Planting Dates
Grass Tvoe
Sept. 1 - Oct. 31
Tall Fescue
Rye (grain)
Lime
Fertilizer 10-10-10
Mulch Straw
Pounds/Acre
120
50
40
120
3,000
800
4,000
Pounds/Acre
200
25
4,000
1,000
4,000
SPOtI Pit F ARFA TO RF I I.4Fr1 FOR STORAGF OF Al r WARE MATFRAII
ANY FILL MATERIAL SHALL BE OBTAINED FROM A PERMITED SITE
SLOPE 2% SLOPE 2%
FULLY COMPACTED
APPROVED SUBGRADE
SEE DETAIL SHEET FOR
TYP. SECTION GRADING PAVEMENT DESIGN
Scale: Not To Scale:
GRIFFINS UUAKI tK KUHU
SR 1134
1 GRADING PLAN
SCALE: 1" =50'
w/ 15" STUB OUT
AND FES w/ INLET®
PROTECTION
INV = 77.84
TO MEET NCDOT
SPECIFICATIONS
TEMPORARY CHECK ,DAM
SILT FENCE
INLET PROTECTION
OUTLET PROTECTION
CONSTRUCTION ENTRANCE
CLASS B RIP RAP
OUTLET PROTECTION
WITH FILTER FABRIC
L=10'
W=5'
D=18"
LIMITS OF
DISTURBANCE
NOTE: SEE SHEET
C-003 FOR OFFSITE
DITCH IMPROVEMENTS
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252-945-2983
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Scale: 1" = 50'
Sheet No.
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TEMP. CHECK DAM
♦ I
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INV IN = 77.94 NEW 15" RCP
w/ FES
NEW MH
w/ 15" STUB OUT
AND FES
INV = 77.84
mm
f
ma:
79,0
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77,0
GRADE SLOPES
GREATER THAN
1 TYPICAL DITCH SECTION
GRADE EXISTING DITCH TO
0.10% GRADE
INV OUT = 77.80 W/ LIMITS OF i \
)UTLET PROTECTION DISTURBANCE
BE REMOVED AND
LAY A NEW 15" RCP
AT REVISED GRADES
GRIFFINS QUARTER
ROAD SR 1134
X
x
Y
82
X ❑
EX. CONG DRIVE
W/ 15" RCP
INV=77.15
I
IW/ 15" RCP
EX, CONIC
MVE-
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INV
IN 77.56
W/ 15
RCP
INV
OUT 77.47
j
INV
77.15
NEW MH
w/ 15" STUB OUT
i
I
AND FES
RIM 79.8
—
GRADE EXISTING
DITCH TO
INV OUT = 77.80 W/
OUTL T PROTECTION
GRADE
EXISTING DITCH TO
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Washington, NC 27889
252-945-2983
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10016
Scale: 1" =30'
Sheet No.
SERVICES ■
C-003

RESULTANT THRUST AT FRRNG AT 1SO P.S.L WATER PREY
Took POUNDS
SPREE
VIA.
OEM
END
90^
BEND
45P
BEND
22 1/P
BEND
II T/P
BUN
e
2.700
1800
2.10D
1.100
e30
6'
S,f00
BLOOD
4,300
2,20(1
1,100
e'
O.Too
13.6w
7.4o0
3Aw
two
to'
14.500
wAw
INiw
5ROD
2,900
12"
20,500
29.0w
15,700
S.Gw
4,D00
NV
2?b00
39,w0
21,tw
11pw
5.400
it,
35.Tw
W,,I00
22,3w
14.000
i,ow
19'
M.ew
0,400
54,100
1i,ew
ee90
20'
W.Ow
??,Bw
42.100
21.6%
10.900
4'
7B,3w
11 twD
w.000
3"Ow
1f,400
w•
120,600
1".e00
92,Sw
47.100
23.ew
Df'
172.bw
2u,Mp
132.Sw
0 4,
33.9w
42,
233,wo
Sm.=
1ie,ew
91.OW
431700
4e'
3o4 w0
4w.Ow
232ROO
118,000
591500
94•
7EI iw
54S,ZOp
2%,Ow
149.°0°
t5,3w
salt RHISO. TTT
SOFT CLAY 1 Ow 1.
SILT 15w 2'
SWOT SILT 31 3'
SAND 4,OM 4.
SANDY CLAY flow 5'
HAM CLAY
TO DETERMINE THE SIZE OF A CONCRETE THRUST BLOCK, WDE THE TOTAL FORCE W THE BEARING VAWES OF THE SOIL THE
DUOTIDR WILL BE THE SRE OF THE RENTING AREA of TIE 1HR15i BLOCK IN w FEET. APPMXIfi TE YMLES FOR VAMOVS
TYPES OF SOIL ARE LLRIED IN TABLE.
M RESPON51OKITY CAN BE ASSUMED FOR THE ACCURACY OF THE DATA IN INS TABLE DUE TO THE WIDE VARIATION OF BEM M
LOAD CAPANLDIES FOR EACH SOL TYPE.
THRUST BLOCKING DETAIL
Scale: Not To Scale:
2'-0' 90. CONC. COLLAR ^-
6' THICK
ADJUSTABLE CAST RON VALVE
BOX W1 REMOVABLE COVER LABELED
-WATER' (nP.p
GATE VALVE ---�
2' x 2' x 6• CONC. PAD
OR CONC. VALVE SUPPORT
(SEE NOTE 2)
NOTES:
1. DINERS" 'D' SHALL BE
LARGE ENOUGH TO MAKE
MOLE 'A' EQUAL TO OR
GREATER THAN 45'.
2. CONCRETE SHALL NOT
INTERFERE WRH MECH.
JOINT FITTINGS.
CONC, BLOCKING SIZE
PRE W D
i SIZE
s -
a
o -S
-I51-6
12'_11
6
3 TYPO VALVE BOX DETAIL
Scale: Nor To Scale:
INSTALLATION OF NETTING AND MATTING
PRODUCTS DESIGNED TO CONTROL EROSION SHOULD BE INSTALLED IN
ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS. ANY MAT OR BLANKETTYPE
PRODUCT USED AS PROTECTIVE MULCH SHOULD PROVIDE COVER OF AT
LEAST 30% OF THE SURFACE WHERE IT IS APPLIED. INSTALLATION IS
ILLUSTRATED BELOW.
1.APPLY LIME, FERTILIZER AND SEED BEFORE LAYING THE NET OR MAT. IF
OPENWEAVENETTING IS USED, LIME MAYBE INCORPORATED BEFORE INSTALLING
THE NET AND FERTILIZER AND SEED SPRAYED ON AFTERWARD.
2. START LAYING THE NET FROM THE TOP OF THE CHANNEL OR SLOPE AND UNROLL
IT DOWN THE GRADE. ALLOW NETTING TO LAY LOOSELY ON THE SOIL BUT
WITHOUT WRINKLES -DO NOT STRETCH.
3. TO SECURE THE NET, BURY THE UPSLOPE END IN A SLOT OR TRENCH NO LESS
THAN 6 INCHES DEEP, COVER WITH SOIL, AND TAMP FIRMLY. STAPLE THE NET
EVERY 12 INCHES ACROSS THE TOP END AND EVERY 3 FT AROUND THE EDGES
AND BOTTOM. WHERE 2 STRIPS OF NET ARE LAID SIDE BY SIDE, THE ADJACENT
EDGES SHOULD BE OVERLAPPED 31NCHES AND STAPLED TOGETHER. EACH STRIP
OF NETTING SHOULD ALSO BE STAPLED DOWN THE CENTER, EVERY 3 FT. DO
NOT STRETCH THE NET WHEN APPLYING STAPLES.
4, TO JOIN TWO STRIPS, CUT A TRENCH TO ANCHOR THE END OF THE NEW NET.
OVERLAP THE END OF THE PREVIOUS ROLL 18 INCHES, AND SAMPLE EVERY 12
INCHES JUST BELOW THE ANCHOR SLOT.
MAINTENANCE
INSPECT ALL MULCHES PERIODICALLY, AND AFTER RAINSTORMS TO CHECK FOR
RILL EROSION, DISLOCATION, OR FAILURE. WHERE EROSION IS OBSERVED, APPLY
ADDITIONAL MULCH. IF WASHOUT OCCURS, REPAIR THE SLOPE GRADE, RESEED,
AND REINSTALL MULCH. CONTINUE INSPECTIONS UNTIL VEGETATION IS FIRMLY
ESTABLISHED.
MPMOI:RE AT MA PMIS OF MMM • EOK55 U11K WM TS STAWIM "OBIMINTOOMOFTNE4MIDUUy 361 RCP
WORMIAIIE£ MWT W PI101WFD,
KITS,
A N,G0.0.T. //apt 87 AAWBB 8P7E W941,L !F 1 PAD TO EOL A SpN A !'D
A. &WINO BADII4 V ACWIILODATE tARWR TNIp(S R M W PRA1�.
0. 6=10IM 11101 LOCA10 111 PROEWE PON WORM URIJUTON By All 0016IRLY. 1
A VWM
OO MI14M PBE �FI = 7W COODIRION IM S BE NMS.W, KOR 09 OWN KMD.
L ANY IMTOI MLLH SRL I M ES IT ONTO THE OW MST W QLAMED SOMATTLY,
8 Construction Entrance
Scale: Not To Scale:
8" 2' MIN,
MIN.
CARRY RIP BAR UP BANK JQU CJC)� G'Q
J°50' "0
NO, 5 WASHED STONE -� ^'>Rc�o (J0(J
0
FLOW J.�cOQO� 900�
.cr`��
]_ -I
C, II =
NATURAL GRADE II
LINE CLASS 3RIP RAP
WITH FILTER FABRC
1FREEBOARD
(MIN)
1
1 DePTH of
I
It DITCH
10 Check Dam Detail
Scale: Not To Scale:
�YTL M
..9;1 M'}913Vk3 40.1ERlAl� / Pi{QDIICY 6aL
:�Ms'Ts�N MICR
1,'Z' FORD V8NM-15H0-TI-.% OR A-MMED LCUAL
-2" FOR:' V84?7-IOHS-1T-77 OR MPROvTD FOJAI
' jJw ;R BOX
CAi'JOL FVJWQY M?4-5A OR APPRO',2r' EGIA:
---_-
ENSURS POSTIh 01AOE
AWAI F40M RtX
'YWt:'. BIP.CX E.ACL;
END "c> eewR SLOT
6' HO >? > NE
CGNt'F.E f BR
IN CHANNELS, ROLL OUT STRIPS OF
NETTING PARALLEL TO THE DIRECTION OF
FLOW AND OVER THE PROCTECTIVE MULCH.
18"
ANCHOR NETTING IN A OVERLAP JOIN STRIPS BY ANCHORING
6-INCH TRENCH. AND OVERLAPPING.
�1 TEMP. DITCH LINER
Scale: Not To Scale:
5 TYP. SLOPE DETAIL
Scale: Not To Scale:
FILTE FABRIC TO
J BE KEYED INTO
ix
TOP OF SLOPE AND
USED IN AREAS WHERE A
m PERMANENT STAND OF GRASS
_ <
IS NOT ACQUIRED.
TYPE "K" GOPPER, PE 34M WTUBING, J•
09 APPROVED ¢AL THAT MEC'S /
AV*A S"ANOAR'J C901 WTH 160 I
PS WJRKING PRE65{st{_.,.ems"
SAOO I, !AP I.fT.±. CONPCRM Ok
STGP_ TE'$TAi, 513-04,
-COS,-GOS, Pt:H i RVC.L LINE SHOWN.
4 2" WATER SERVICE DETAIL
Scale: Not To Scale:
2.5" BINDER COURSE
NOTE: IF CONCRETE IS BID
CONTRACTOR SHALL BASE THIS ON
THE
61CR-5 STONE FULLY COMPACTED 8" THICK 40001 PSI CONCRETE SLAB
APPROVED SUBGRADE WITH #4 REBAR AT 16" ocew
_TYP. HEAVY PAVEMENT SECTION
Scale: Not To Scale:
x
n
TYPICAL MANHOLE STEPS AT 16' [IN CENTER
PRECAST CONE
DEPTH
ONE
GREATER
ECCENTRIC
THAN 6'
6' OR LESS
CONCENTRIC
FLEXIBLE SLEEVES
AT ALL POINTS OF
PIPE ENTRY
SEE SPECIFICATIONS
GROUT CHANNEL
MANHOLE RING E, COVER
- - /-•-----112' GROUT
SEE SPECS FOR
JOINT REQUIREMENTS
'D'
SLOPE 1'/FT,
6'
I' MIN. CRUSHED COMPACTED {
AGGREGATE BASE
31L�Ii=1IIII UNDISTURBED GROUND
11 TYPICAL DIVERSION
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0
a
w
G
-TOP OF OF PAVEMENT
0 WHEN INSTALLED IN PAVE-
MENT MANHOLE TOP SHALL
BE FLUSH WITH THE
FINISHED PAVEMENT.
° THE DISTANCE FROM THE
TOP OF MANHOLE RING
AND COVER AND FINISHE➢
GRADE MAY VARY WIDELY.
SEE PLAN
° EXTEND PIPE INSIDE MANHOLE
WALL MAX 2', AT CLOSEST
POINT,
o MIN. (1) GRADE RING REQ'D IN
NON -PAVED AREAS. IN PAVE-
MENT, GRADE RING NOT REWD
EXCEPT AS NECESSARY TO
MEET FINISHED ELEVATION.
° NO MORE THAN 2-4' GRADE
RINGS SHALL BE INSTALLED.
PIPE SIZE
LESS THAN 20' 4'
20' OR GREATER 51
30' OR GREATER 6'
SIDE SLOPE
NO GREATER
3:1
z
CONSTRUCTION SEQUENCING
THE DRAINAGE AREA TO THE CELL SHOULD BE STA131LIZED
BEFORE CELL CONSTRUCTION BEGINS IN ORDER
TO PREVENT CLOGGING. FOR ROADWAYS DRAINING TO THE
CELL, THE SUBBASE COURSE (CRUSHER RUN)
AND THE BASE COURSE LAYER OF ASPHALT NEED TO BE IN
PLACE PRIOR TO CELL CONSTRUCTION. IF FINES
GET WASHED INTO THE EXCAVATED CELL, THEY MUST BE
REMOVED BEFORE BUILDING THE CELL IN
ORDER TO RESTORE THE IN -SITU SOILS PERMEABILITY. IT IS
RECOMMENDED THE CELL MEDIA BE
COVERED WITH IMPERMEABLE PLASTIC DURING
CONSTRUCTION.
ONCE BID RETENTION AREA IS BEING CONSTRUCTED THE
CONTRACTOR IS TO CALL THE ENGINEER FOR INSPECTION
OF THE UNDER DRAIN SYSTEM PRIOR TO BACKFILL.
24 HOUR NOTICE IS REQUIRED FOR ALL INSPECTIONS.
HGL1'VOL =SN
i.....•.....•4
PERMANENT SEEDING
ON ALL SLOPES
Engineered fill media
CLEANOUTS
1
THE SOIL MEDIA TYPE.
THE SOIL MIX SHOULD BE UNIFORM AND FREE OF STONES,
STUMPS, ROOTS OR OTHER SIMILAR
MATERIAL GREATER THAN 2 INCHES. IT SHOULD BE A
HOMOGENOUS SOIL MIX OF 85-88 PERCENT BY
VOLUME SAND (USDA SOIL TEXTURAL CLASSIFICATION), 12
PERCENT FINES (SILT AND CLAY),
AND 3 TO 5 PERCENT ORGANIC MATTER (SUCH AS PEAT MOSS)
SHALL BE USED, ADDITIONALLY, THE PHOSPHORUS CONTENT OF
THE SOIL MIX SHOULD BE LOW. SOIL MEDIA SHOULD
BE SENT TO NC DEPARTMENT OF AGRICULTURE (NCDA) LABS TO
BE ANALYZED. THE P-INDEX FOR
BIORETENTION SOIL MEDIA SHOULD ALWAYS RANGE BETWEEN
10 AND 30, REGARDLESS OF THE TARGET
POLLUTANT (HARDY ET. AL., 2003 AND HUNT ET. AL., 2006).
THE MEDIA SHOULD BE TESTED TO DETERMINE AN ACTUAL
DRAINAGE RATE AFTER PLACEMENT. THE
PERMEABILITY SHOULD FALL BETWEEN 1 AND 6 INCHES PER
HOUR, AND 1-2 INCHES PER HOUR IS
PREFERRED.
OUTLET STRUCTURE RIM 60.62 ALTERNATIVE AND EMERGENCY
Grass, SOD SPILLWAY 41X41 STRUCTURE
Grassed cells must be sodded and the sod must
not be grown In soil with an Impermeable layer.
e' . 2- 6" unlined,
slotted plastic
pipe 8" Washed 57 s'
envelope
Permeable filter fabric over envelope
_ _ _ _ _ _SHWT = 71'
PROPOSED CLEANOUTS - - - - - - _ - - - - -
PLACE ON UNDERDRAIN
AS REQUIRED
AONtAT�PB1C110 WNEWE I�WQIWW9�.
' ■�N� II
I b�
A POIM WET Al DrW OF A' WNW N EAKIN M011ML
W. ANCHOR MW W C ■ W AND PLL n 10 M OOMPAMM
C. PW01W16 ADa U i7l0AVAWQI *" OF 30 FONT 10 AM M A
1RlOpIY ■fAll A iT IMP.
0. jjjjIiY UK MAII I, p8 MOM IRON MPIIOYN.
12 SILT FENCE
Scale: To Not Scale:
7 BIO RETENTION DETAIL SECT A
Scale: Not To Scale:
PIPE OUT -ET TO PLAT AREA NO WELL DEFINED CHANNE1
PLAN
15" DRAIN PIPE
INV OUT 78.21
Note: Use inlet protection to dissipate
energy and remove sediment (forebay,
stone/veg. filter strip, reinforced swale,
etc.)
OT
SDAt-
Permeable filter fabric
lining entire bioretention cell
PIP- CUTLET TO 'WELL-
MIN
+_ SS DEPTH (d)
"
2 - 2"
La
3,
O„
I i
I
17 Oo_���.fl U Oa
La
PLAN
La
\�/ X/ x��
SECTION THRU PIPE SECTION THRU PIPE
NOTES: 1. L a IS THE LENGTH OF THE RIP -RAP APRON.
2. do IS E L II AL SIZE 0� THE CUTLET
A /
N TELL �EFI 1. CHANNEL D EXTEND T "i- I n, ". THE r'i HE � APtIaE_ BANKS T ,4N ELEVATION OF 6" ABOVE
THE MAXMI.M TAILWATER DEPTH OR TO THE THE BANK WHICHEVER IS LESS. WIDEN CHANNEL AS
NECESSARY TO ACHIEVE REQUIREJ WIDTH A ?= ,_t .a FROM OUTLET. RIPRAP ENTIRE DISTURBED
PORTION O THE CHATNE
4. A FILTER BLANKET OR FILTER FABRIC SHOU�E STALLED BETWEEN THE R P-RAP AND SOIL FOUNDATION.
13 OUTLET PR07ECTION DETAIL
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20212
'DINE
PAMLICO ENGINEERING SERVICES
128 Abbey Lane
Washington, NC 27889
252-945-2983
[e-mail]
0
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fn
10016
Scale: NTS
Sheet No.
CmisO04