SW6091002_APPROVED PLANS_20091009

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
G9/DD�
YYYYMMDD

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PROPOSED STORMWATER CONTROL PLAN
PINECREST SUBDIVISION
CITY OF LUMBERTON
PM 01[ S"1
GOUNiki CLUB
SILL
N.C. HIGF. "-. , , ,
VICINITY MAP
Nui i,7-,P[iE-
JOHNNY W. NOBLES AND ASSOCIATES
ROBESON COUNTY, N.C.
SHEET 1
SHEET 2
SHEET 3
SHEET4
PROFESSIONAL LAND SURVEYORS
COVER SHEET
OVERALL PLAN SHEET
PARTIAL PLAN SHEET
STORMWATER DETAIL SHEET
STORMWATER DETAIL SHEET
P.O. Box 407
LUMBERTON, N.C.

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0000pWET DETENTION BASIN
STORMWATER CONTROL PLAN
WIDTH ELEVATION
TEMP. POOL TOP= 47.0' 137.50
PINECREST SUBDIVISION
TEMP. POOL BOTTOM= 34.0' 136.50
PERMANENT POOL TOP= 34.0' 136.50 CITY OF LUMBERTON ROBESON COUNTY, N.C.
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as
BOTTOM VEG. SHELF= 24.0' 136.00
TOP SEDIM. CLEANOUT= 7.50' 130.50 GRAPHIC SCALE
BOTTOM SEDMIN. CLEANOUT= 4.5.0' 129.50 ao o 15 ao eo
( IN FEET )
I inch = 30 ft.
JOHNNY W. NOBLES AND ASSOCIATES
PROFESSIONAL LAND SURVEYORS
P.O. Box 407 416 CHESTNUT STREET
LUMBERTON, NORTH CAROLINA, 28359
DATE: SEPTEMBER, 2009 DRAWN BY: B.M.
SCALE: 1 "= 30' SURVEYED
CHECKED BY: J.W.N.
SHEET 2 OF 4

(IT .1I I1 Ili m -,
BASIC WET DETENTION POND
_- i II Ila.
OU 11 L I ORI1 J
NOT TO SCALE
170.0' TOP LENGTH
I4 MPOHARY POOL [OP- 13150
PLRMANEM POOL TOP= 136.50
Bti I TOM OF VEGETA TED SHELF= 136.00
EiUTTOM OF POND (SEDIMENT)
';LEANOUTTOP ELEVATION= 130.50
SEDIMENT CLEANOUT
BOTTOM ELEVATION=129.50
PERMANENT POOLVOLUME
SECTION OF BASIC WET DETENTION POND
NOT TO SCALE
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SEDIMENT GLEANOUT
SECTION OF BASIC WET DETENTION POND
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1.0' BERM
GRAVEL OR VEGETA RON
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FORFBAY
17
/ YEESLOPE=3.1
LINED All PH 3" CONCRETE
NOT TO SCALE
STORMWATER CONTROL DETAIL SHEET
PINECREST SUBDIVISION
CITY OF LUMBERTON ROBESON COUNTY, N.0
JOHNNY W. NOBLES AND ASSOCIATES
PROFESSIONAL LAND SUHVEYOHS
P.O. Box 407 416 CHESTNUT STREET
LUMBERTON, NORTH CAROLINA, 28359
DATE: SEPTEMBER, 2009 DRAWN BY: B.M.
SCALE: NONE SURVEYED BY: S.N.
CHECKED BY: J.W.N,
SHEET 3 OF 4

ACCESS ROAD
A
1M
VEGETATED SHELF
10' _
10
�7
FILTER FABRIC SHALL BE A NON -WOVEN GEOTEXTILE WITH
PROPERTIES EQUAL TO AMOCO 4551 OR MIRAFI 140N. GETEXTILE
CURTAIN SHALL BE SECURELY FASTENED TO PIPE WITH STAINLESS
STILL STRAPS AND HARDWARE. CURTAIN SHALL NOTED OTHERWISE
CURTAIN MAY BE CUT ON TOP SIDE OF PIPE ONLY TO ALLOW
CURTAIN TO BE WRAPPED AROUND PIPE.
"" -' "MINUM CM RISER
VTI-VORTEX PLATE
ANTIVORTEXPLATE
nwmil CM RISER
ALUMINUM
COMB ANTI VORTEX DEVICE
AND TRASH RACK
GEOTEXTILE CURTAIN
ALUMINUM COMB. ANTIVORTEX DEVICE AND TRASH RACK
ALUMINUM
COMB. ANTI VORTEX -
DEVICE AND TRASH RACK
SPILLWAY CREST- 1375011 YR' 24 HR. STORM) SLUICEGATESTEM �—
2.5"DIA. ORIFICE —�
TOP OF WMBANKMENT ELEV. = 139,50 10,
13
EMRS. SPILLWAY ELEV. = 138,50
SEED & MULCH EMBANKMENT
EMERGENCY SPILLWAY
INS TALL SLOPE PROTECTION MAT TING
ON SLOPES STEEPER THAN 6.1
p PERMANE. NIT POOL WSE = 136. 50 (LOW FLOW ORIFICE INV.I SUBMERGED SHELF
o COMPACTED FILL
ELEV. 136.00
30" CORRUGATED ALUMINUM RISER
SEDIMENT FOREBAY PERMANENT POOL (3.5' AVG. DEPTH)
RIP -RAP LINED WEIR
0
HARDENED BOTTOM HARD[: NED BOTTOM
BOTTOM = 129. 50 BOTTOM OF POND ELEV. = 136.50 1111 k I IL k 1. 15' CORRUGA ED AL M NU L
GEOTEXTILE CURTAIN
\ 30" RISER INBEDED IN ANTI -FLOTATION DEVICE (B•) AT NY OC
INSTALL TEMPORARY SEDIMENT FILTER OF WASHED STONE TO A V X 5' DIA. CONC. ANTI -FLOTATION DEVICE
HEIGHT OF 2' OVEH THE POND DRAIN. WRAP POND DRAIN WITH 8" CORRUGATED ALUMINUM POND DRAIN W SLUICE GATE
WITH WOVEN FILTER FABRIC AND OPEN VALVE TO DEWATER BASIN.
REPLACE STONE F IL ER AS NEEDED TO ENSURE PROPER FILTERING.
EMBANKMENT SHALL BE CONSTRUCTED OF CLEAN STRUCTURAL SOIL, FREE OF ROOTS,
SEDIMENT SHALL BE REMOVED FOLLOWING STABILIZATION OF SITE VEGETATION, ROCKS AND OTHER OBJECTIONABLE MATERIAL. SCARIFY SURFACES BEFORE
AND DETENTION FUND SHALL BE FINE GRADED TO FINAL CONTOURS. PLACING FILL. PLACE FILL IN 6-8" LOOSE LIFTS. COMPACT TO AT LEAST 955'o OF
THE STANDARD PROCTOR DENSITY.
SLUICE GATE DETAIL
NOT TO SCALE
EMBANKMENT SECTION
TOP OF EMBANKMENT
T
EMERGENCY SPILLWAY SECTION
BASIC WET DETENTION POND (OR TOP OF ACCESS ROAD)
NOT TO SCALE
CONSTRUCTION SPECIFICATIONS
1 CLEAR. GRUB AND STRIP THE AREA UNDER THE EMBANKMENT
OF ALL VEGETATION AND ROOT MAT. REMOVE ALL SURFACE
SOIL CONTAINING HIGH AMOUNTS OF ORGANIC MATTER AND
STOCKPILE OR DISPOSE OF IT PROPERLY. HAULALL
OBJECTIONABLE MATERIAL TO THE DESIGNATED DISPOSAL
AREA.
2, ENSURE THAT FILL MATERIAL FOR THE EMBANKMENT IS FREE
OF ROOTS, WOODY VEGETATION, ORGANIC MATTER AND
OTHER OBJECTIONABLE MATERIAL PLACE THE FILL IN LIFTS
NOT TO EXCEED 91NCHES AND MACHINE COMPACT OVER
FILL THE EMBANKMENT 6 INCHES TO ALLOW FOR SETTLEMENT.
3. CONSTRUCT THE OUTLET SECTION IN THE EMBANKMENT.
PROTECT THE CONNECTION BETWEEN TH RIPRAP AND THE
SOIL FROM PIPING BY USING FILTER FABRIC OR A KEYWAY
CUTOFF TRENCH BETWEEN THE RIPRAP STRUCTURE AND THE
SOIL,
4. CLEAR THE POND AREA BELOW THE ELEVATION OF THE CREST
_ OF THE SPILLWAY TO FACILITATE SEDIMENT CLEANOUT.
5. ALL CUT AND FILL SLOPES SHOULD BE 2: 1 OR FLATTER.
6, ENSURE THAT THE STONE SECTION OF THE EMBANKMENT HAS
A MINIMUM BOTTOM WIDTH OF 3 FEET AND MAXIMUM SIDE
SLOPES OF 1: 1 THAT EXTEND TO THE BOTTOM OF THE SPILLWAY
SECTION.
7. CONSTRUCT THE MINIMUM FINISHED STONE SPILLWAY BOTTOM
WIDTH, AS SHOWN ON THE PLANS, WITH 2:1 SIDE SLOPES
EXTENDING TO THE TOP OF THE OVER FILLED EMBANKMENT.
KEEP THE THICKNESS OF THE SIDES OF THE SPILLWAY OUTLET
STRUCTURE AT A MINIMUM OF 21 INCHES. THE WEIR MUST BE
LEVEL AND CONSTRUCTED TO GRADE TO ASSURE DESIGN
CAPACITY,
8. MATERIAL USED IN THE STONE SECTION SHOULD BE A WELL -
GRADED MIXTURE OF STONE WITH A d50 SIZE OF 9INCHES
(CLASS B EROSION CONTROL STONE IS RECOMMENDED)
AND A MAXIMUM STONE SIZE OF 14 INCHES. THE STONE MAY
BE MACHINE PLACED AND THE SMALLER STONES WORKED
INTO THE VOIDS OF THE LARGER STONES. THE STONE SHOULD
BE HARD, ANGULAR AND HIGHLY WEATHER RESISTANT.
ENSURE THAT THE STONE SPILLWAY OUTLET SECTION
EXTENDS DOWNSTREAM PAST THE TOE OF THE EMBANKMENT
UNTIL STABLE CONDITIONS ARE REACHED AND OUTLET
VELOCITY IS ACCEPTABLE FOR THE RECEIVING STREAM. KEEP
THE EDGES OF THE STONE OUTLET SECTION FLUSH WITH THE
SURROUNDING GROUND AND SHAPE THE CENTER TO CONFINE
THE OUTFLOW STREAM.
10. DIRECT EMERGENCY BYPASS TO NATURAL, STABLE AREAS.
LOCATE BYPASS OUTLETS SO THAT FLOW WILL NOT DAMAGE
THE EMBANKMENT.
11. STABILIZE THE EMBANKMENT AND ALL DISTURBED AREAS
ABOVE THE WET DETENTION BASIN AND DOWNSTREAM FROM
THE TRAP IMMEDIATELY AFTER CONSTRUCTION.
12. SHOW THE DISTANCE FROM THE TOP OF THE SPILLWAY TO
THE SEDIMENT CLEANOUT LEVEL (ONE Half THE DESIGN
DEPTH) ON THE PLANS AND MARK IT IN THE FIELD,
OUTLET PROTECTION APRON
STORMWATER CONTROL DETAIL SHEET
PINECREST SUBDIVISION
CITY OF LUMBERTON ROBESON COUNTY, N.C.
JOHNNY W. NOBLES AND ASSOCIATES
PROFESSIONAL LAND SURVEYORS
P.O. Box 407 416 CHESTNUT STREET
LUMBERTON, NORTH CAROLINA, 28359
DATE: SEPTEMBER, 2009 DRAWN BY: B.M.
SCALE: NONE SURVEYED BY: S.N.
CHECKED BY: J.W.N.
SHEET 4 OF 4