SW6231001_Plansheet - Misc. Detail_20240424 (2)

3TORMWATER MANAGEMENT NOTES: RIP-RAP
IPC E INLETS
-RAP PRE-TREATMENT
FOREBAY AT PIPE INLETSTS
1. THE DEVELOPER OR HIS AGENT SHALL CONTACT THE DESIGN ENGINEER WHEN SEE DETAIL THIS SHEET
THE BEST MANAGEMENT PRACTICE(a)ARE CONSTRUCTED AND ABOUT TO TOP OF EMBANKMENT=203.0
BECOME OPERATIONAL m A FINAL INSPECTION CAN BE PERFORMED TO 100-YEAR STORM ELEVATION=202.48 \ w w %✓/'/ /��'/\/ STORM DRAINAGE PIPE OR
DETERMINE COMPLIANCE WTH THE APPROVED PLAN CAN BE PERFORMED. � Ly GRASS SOD �, \,K CONCRETE FLUME
10-YEAR STORM ELEVATION=201.77
",� OUTFACE INTO POND LENGTH&MOTH
2. ANNUAL MAINTENANCE INSPECTION AND REPORT REQUIRED-THE OWNER OF SPILLWAY ELEVATION=201.7 ,//
FILLER FABRIC AT BOTTOM vIMENSIgJS TO BE PE'
A PERMITTED STRUCTURAL AND
BMP/CONTROL SHALL ANNUALLY AND SIDES OF CLEAN SAND RIP-NAPill
SUBMIT A MAINTENANCE AND INSPECTION REPORT FOR EACH BMP TO ME JY w FILLER BED ELEVATION
STORMWATER ADMINISTRATOR ANNUAL INSPECTIONS SHALL BEGIN WITHIN 2-YEAR STORM ELEVATION=200.80 M H tlyJ° /bib APRON DETAIL
ONE YEAR OF THE RECORDATION OF ANY DEED(S)SHOMNG STORMWATER NM[,M tl
BMPs/CONTROL STRUCTURES. 1'-0'CLEAN SAND M
1-YEAR STORM ELEVATION=200.51 MyATM� BIG-RETENTION POND
3. UPON COMPLETION OF PIE PROJECT AND BEFORE A CERTIFICATE OF } TAPER DEPTH
1.0'RAINFALL ELEVATION=200.02
OCCUPANCY SHALL BE GRANTED,THE ENGINEER OF RECORD SHALL CERTIFY 0 tea',"THAT THE COMPLETED PROJECT IS IN ACCORDANCE MTH THE APPROVED EXISTING GRADE=204.0 BOTTOM OF BASIN=200.0 tl FOREBAY 1
' 0
STORMWATER MANAGEMENT PLANS AND DESIGNS.
4. A FINAL INSPECTION OF THE SITE AND STORMWATER MANAGEMENT FILLER MIXTURE trra Tull
BMP/CONTROLS TO BE SCHEDULED WITH AND COMPLETED BY THE PROJECT
ENGINEER. V-0°OF CLEAN ASTh1 C-33 \
SAND(MEDIUM AGGREGATE SAND 5. RCMP AND THOR ASSIGNS HAW RIGHT TO ACCESS THE STORMWATER -==T-T I- 1=-1 1-T I- 1 '
CONTROL(s)FOR INSPECTIONS OR MAINTENANCE AS NECESSARY. WITH A SIZE RANGE OF 0.02-INCH _ T1--TO 0.04-INCH DIAMETER) 6'Cuss B
6. THE ENGINEER'S CERTIFICATION OF COMPLETION WILL BE REQUIRED PRIOR TO RIP-RAP OVER
THE FINAL PUT OR CERTIFICATE OF OCCUPANCY. THE STORM IER LLA'LLAYER OF GEOTEXHLE PERMEABLE RIP-RAP FOREBAY FILTER FABRIC
CONTROL IS TO BE INSPECTED TO ENSURE IT IS FUNCTIONING AS DESIGNED FILTER FABRIC(MIRAFI N-SERIES SCALE:NTS.
AND HAS FULL DESIGN VOLUME PRIOR TO ISSUANCE OF THE FINAL OR EQUIVALENT) _ FILTER FABRIC
CERTIFICATE OF OCCUPANCY.
]. THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING THE STORMWATER , 1-0"MIN.UNDISTURBED IN-SITU A
CONTROLS(s)ACCORDING TO THE APPROVED MAINTENANCE PLAN AND SOIL
DIREcnoN of NwEQ. J O
OPERATION&MAINTENANCE PROVISIONS(INFILTRATION)
BMP element: Potential problem: How to remediate the problem
The entire infiltration basin Trash/debris Is present Remove the trash/debris f w SEASONAL HIGH WATER TABLE=193.0 \_
The grass filter strip or other pretreatment Areas of bare soil and/or erosive gullies Regrade the soil if necessary to remove
area have formed the gully,plant ground cover and water I:CI
until established.Provide lime and a
one-sine fertilizer application INFILTRATION BASIN TYPICAL SECTION
NTS
Sediment has accumulated to a depth Search for the source of the sediment and
greater than three inches remedy the problem if possible.Remove m o
the sediment and dispose of it in a p m
cation where it will not cause impacts p
to streams or the SCM N ui E O�
The Row diversion structure(if applicable) The structure is clogged Unclog the cancrance and dispose of any Q = Or E t
sediment in a location where it will not Z z m 3 C7 3
cause impacts to streams or the SCM LJJ 2 n
The stricture is damaged Make any necessary repairs or replace if E v Q o E
damage is too much for repair C d
The inlet device The inlet d f applicable) Unclog the a dispose of an / m m
pipe is clogged(i PD ) me Pipe an P Y
sediment m a location where It will net _/- - -N / "l / ( l l / "\
cause impacts to streams or me SCM ' / / /L / / V l / �61' I /ter, -V A A
The inlet pipe is cracked or otherwise Repair or replace the pipe / / // / // \ \ 1\ 1 I 1 \1 \ \ \\
damaged(if applicable) / Si / / A \ \ A \/ \
\ \ I \.
/ / /- / �V A \ A ��\ --- I I �\ \��7
Erosion is occurring in the Swale Regrade the Swale if necessary and / < \ l
(if applicable) provide erosion control devices such as / // // / // I \\ \ \/�\ \ r \ \ \ < / (f)
reinforced turf matting or riD�aD m avoid / / ( I \\ \ \ i�\ \ \ \ S J U
future erasion problems f V / A v v V A yv /" V V A V Z
Stone verge is nagged or covered in Remove sediment and dogged stone and H \ \ \ J \ \ -\ \ \ \ 1 I F
sediment(if applicable) replace with dean stone _= \ \ j \ \ _ \ GRASS SPILLWAY \ I W z
The basin \\ \ \ -\ \ REFER TO DETAIL \ I ILTER MEDIA(SEE NOTE 2) D
More than roar nines of segment has Search for the source of the«dmert and - \ \ / \ THIS SHEET / uMP O
accumulated remedy the Problem f possible.Remove \ _\ \ \ / \ \ I \ \ SILT FENCE As NEEDED
the sediment and dispose of tin a \ \ y \ \ \ \ 1 FLOW
location where t will not cause impacts • v V �V ,/V A \ \ A A ) A j A\ I Z W
to streams or me SCM _ / \ \ \ A ) Y
Erosion of the basin surface has occurred Provde additional erosion protector such \ j \\ \ /` / \ \ \ 1 �'!� axg6,\ 1 \ I 1 "2oy. W 2
m npmp s displaces reinforced turf mating or rpmp if y" \ I A A W
as
to prevent metre erosion problems / I E`1 \ \..� / \ 1 1 `.,� .fit \ \ 1 1 LL W
`�� \ O,� �� j 1 I 'E�! \ \ \ / I NOTES. AIER LEVEL r/N
Water is standing more than three days Replace the top few inches of soil to see -�% \ \off \\" o c, \ \ / Q V1 O
otter a storm event if this corrects me standing water problem. /0 ) I I o V A. A
\ \ \ cJ I. PRIOR i0 INSTALLATION,MANUFACTURER SPECIFICATIONS OF FILTER MEDIA SHALL BE RENEWED TO
If not,consult an appropriate professional ,,�\, \ f^ \ 1 \ TOP OF l \ / ENSURE THAT DISCHARGE FROM FILTER MEDIA SHALL MEET OR EXCEED THE PROVISIONS OF THE CLEAN U
far a more extensive repairw,r \/' \ ` o \ \ ,EMBANKMENT \ I WATER ACT. S 7
The embankment /\ \ \ ,N ii
I \ O \ ELEV=203.0 l / I 2. ENSURE THAT PUMP PRESSURE DOES NOT EXCEED FILTER MEDIA PRESSURE RATING. 1'--1
Shrubs or trees are growing m me Remove trees and shrubs \ \ oo \ t-' a'` • \
embankment o \ / / CC
/ \ 1 \ \ 3. FlL1ER MEDIA MAY BE,BUi NOT LIMITED T0,SAND MEDIA FILTRATION DENCEB,RATED FILLER FABRIC
•
i� \ / U ^\`�rw w\ \ \ \\ I \ / I BAGS OR POLYMER BASED DEWAIERING PRACTICES. W \ 1
An annual inspection by an appropriate Make needed repairs immediately \ I \ (�)
professional shows that the embankment \STORMWATER 1 ` , ' \ `1 i \ t'7 •N I \ I / J ( I a. PUMP OR POLR snaA NOT BE IN coNracT LNTi BOTfoM of POND.
needs repair MANAGEMENT V fir.,►1'� V A V A o , 1 A A v / ..--
T. Q 0
EASEMENT V �) A V \ A r" V A
outlet device clogging has occurred clean out me panel device and dispose or I t o �Y \ \ \ o \ ''� I I BMP POND DEWATERING LOW POINT 2
sediment m a location where n will not I. \ N "� ) \ \ O \ / / C U
cause impacts to streams or the SCM '\ \ \ 1 I \ I \ \ \ \� / /. I /
cc cc
The outlet device 1s damaged Repair or replace me outlet device \ ` (li � I� 1 AI 1 I \\ \\ V A o I \ // /9 P ' / O Y
I I I \ST�yRM�AT\R \TREAT\MENT rn j
The receiving water Erosion or other signs of damage have Repair the damage and improve Me Row \ \ \ \ ) lJ\ I- CC
occurred at me outlet dissipation structure A ) �➢ \ \ 'V o I \ / / 1 U) Q
\ /, \ \\ Y,,\ \ \ I 1 O \ I cP / I FLOW *LONG TOP OF EMBANKMENT d
DRchar es from the infiltration trench are Contact the local NCDEQ Regional office (\ \ \ \ \SPACE( I I 6' \, SPILLWAY H B W 55 CHANNEL LINING SPILLWAY ELEVATION
g I ) \1 \ ) ) woo) SLOPE(%) ELEVATION z
causing erosion or sedimentation In the cJ\ \ \
receiving water , I -% \ \ 3\SFl \ I I I
y--�- S \ \ I INFILTRATION 46.12 CFS 33.33% 3' 20.0' 27.8' 3;1 STRAW W H NET NAG 203.0 201.7
RIP O \ \ \ \ \ \ \ 6' , / / SPILLWAY SHOREMAX W/P300
OPERATION AND MAINTENANCE: , \ DISSIPATER PAD \ \\ \ \ \ \ \ \ \ \ \ \ I I I •
1
North Carolina storm water rules require quarterly inspections by the regulating agency of infiltration areas as a minimum. More \ WIDTH=B' \\\ vnl '9 \ \ \ \ \ \) \ \ \ \ \ \ \ I ! \ I 'LONGITUDINAL SLOPE- I� W 'r
frequent Inspections by the land owner or system operator are strongly encouraged to ensure the proper operation of infiltration \� n \CA \\ \ \ \ \ \ \ \\ 3:1 BACK SLOPE FROM EMBANKMENT EXTEND SNING TO EXTEND LINING TO
areas LENGTH=16' \\ \ \ \ \ \ \ \ \ l TOP of SPILLWAY
THICKNESS=24° \\ \\\ r\ \ \ \ \ \ \\ \ \ \ \ \ \\ \ \ i / ' TOP OF SPILLWAY TOP OF EMBANKMFNT=203.0
A. Rainfall Event RIP RAP CLASS=1 \\ c� Oc-\ \ \ \ \ \ 1, \ \ \ \ \ \ \ a' 1 /
1.Inspect the basin after every rainfall event greater than 1.5 inches. 1 \ '�� \ \ \ \ \ \ \ \ \ ) I H CHANNEL LINING
B. Monthly Inspection \\ I I ' O` \ \ C / \ II I / S` /
1.Inspect the basin monthly I \\ O� -\ \ \ \ \ 1 l \ ( ( I / m / / § SPILLWAY ELEVATION=201]
2.Check the infiltration area side slopes;remove trash and repair eroded areas before the next rainfall event. ) \ \ \ I 1 \ \ / ( - ^--l MATTING SHALL BE AS NOTED
3.Check the vegetative and rock filters for sediment accumulation,erosion and proper operation of the flow spreader ,\ \ \ \ Z` `lam -\ \ \ 1 1 \ 1 I\ / (/ ( OR APPROVED EQUAL B w.
mechanism and repair as necessary. LOT \ \ o ` ` \ \ EMN ALunnNFfA
C. Quarterly Inspection ` \ I ' `a \ \ \ 1 1 \ 1 �' \ 0 ( GRASS SPILLWAY DETAIL GRASS SOD ON SPILLWAY ��H CAR y"'',
1.Inspect the collection system(i.e.catch basin,pipes and grass miles)for proper functioning. Clear accumulated I \20,242� SF % i \,\ \ \ 11 \ �;�I 1 1 j J( \ \F\ AND SIDE SLOPES `�4,�1 E•••.�!4
trash from basin grates and basin bottoms. Check piping for obstructions. \ \ \ ESS/'":g
2.Check pond inlet pipes for undercutting,replace rip-rap and repair broken pipes \ \ \ 1 / ' ) I� I z •gyp N''
3.Reseed grassed swales,including the vegetated filter if applicable,twice a year as necessary. Repair eroded areas 1 \ \ / i\ \ I �' /- ) \\ Q SEA ?'
immediately.
/ \\ ) /\ 3
D. Six Moh Inspection \ \ \ \ \ �f \ \ \ \/\ 1 / / s_ - a51571 -'
1.Remove accumulated sediment from the bottom of the outlet structure or other areas where accumulated sediment I \ I \/\ \\ \ / \ \/"\/ \ 1 I II I I / \\�\ tip. I '
477
is noted.2.Inspect the embankment taking note of any wet areas where water may be seeping through the soil. 1 \ / / 1 / ( \�\/ \ \ I 1 1 \ / / \ II�E 'O �
E. General Inspection 1 /' I. \ /' I 1 1 I 1 / / •• ,
1.Maximum grass height is to be bin. \ \ I `� / I \ \ \/'/ \ \ \ 1 \ 1 1 L \ \ 0 '-Y5,\
2.No woody vegetation shall be allowed to grow in the infiltration area. I \ / / \ \- ( /"i \ \ \ \ \ I \ \ '/AJllrl I
3.Debris shall be removed from blocking the inlet and outlet structures and from areas of potential clogging. \ ) \ ) _ I \ \ \ \ \ \. \ ,"/ .
4.Periodic removal of dead vegetation shall be accomplished. \ I \N.\ / / / �) - -car \ \ \ \ \\ \ \ \\\ \ STORMWATER MANAGEMENT DESIGN INFILTRATION SYSTEM#1:
5.AI components of the infiltration system must be kept in good working order. \( \ l 1 I i / / \ 1 \ ) \ \ \ \\ \ \ \\ \ \ RIVER BASIN: CAPE FEAR
1 \ \ \ \ \ \ \\ RECEIVING STREAM: PUPPY CREEK PLAN STATUS
GRASS SOD NOTE: /\ �I I/ 1 1 1v Av vv \V A vv A V A� STREAM
cuss: C8 31 19 09/07/23 INI AL SUBMISSION
i \\A v Hut 35.02200fi 01/17/24 REVISED PER REVIEW
GRASS SOD SHALL BE EITHER HYBRID BERMUDA GRASS OR CENTIPEDE THAT HAS BEEN GROWN IN A ) \ \ \ \ / I \ I \ \ ) \ \\\\ \ \ \ STAGE/STORAGE TABLE PROJECT COORDINATES: 35.0222fi0N,-79.137277W
SOIL THAT IS FREE OF AN IMPERMEABLE LAYER(SUCH AS CLRA). - - \,T L / I 2 I ) . , \ \ - \
STAGE(FT) ELEVATION(FT) CONTOUR AREA INCREMENTAL TOTAL STORAGE PUNS DESIGN SUMMARY
(NOTES: GRAPHIC SCALE 0.0 200.0 19,600 STORAGE(CF) OF)
DRAINAGE AREA TO POND: 9.04 ACRES
SIZE IMPERVIOUS AREA TO POND: 2.32 ACRES
1. ALL INFILTRATION BASINS SHALL HAVE AN ACCESS EASEMENT CONNECTING TO A DEDICATED PUBLIC RIGHT OF WAY. 1.0 201.0 21,520 20,660 20,660 OFF-SITE DESIGN IMPERVOUS AREA TO POND: 0.17 ACRES DATE DESCRIPTION
2. ALL DRAINAGE AREAS TO AN INFILTRATION BASIN ARE TO BE STABILIZED PRIOR TO INSTALLATION OF SOILS OR CRASS SOD. 20 201.7 22,760 15,496 36,156 TOTAL DESIGN IMPERVOUS AREA TO POND: 249 ACRES
.o 202.0 z3,3m 6,9n a3,os9 MCB MCB CEP
3. THE DRAINAGE AREA OF THE INFILTRATION BASIN WILL BE CAREFULLY MANAGED TO REDUCE THE SEDIMENT LOAD TO THE SAND FILTER 3.0 203.0 25,150 24,230 67,299 PRE-DEVELOPED POST-DEVELOPED POST DEVELOPED DESIGN DRAWN CHKD
SYSTEM. PLAN VIEW TO POND TO POND THROUGH POND
( IN FEET) DRAINAGE AREA: 9.55 AC 9.04 AC H'1"=30'
4. THE WATER LEVEL IN THE MONITORING WELL(S)VLL BE RECORDED ONCE A MONTH AND AFTER EVERY STORM EVENT GREATER THAN 1.5 1 inch= 30 ft. CURVE NUMBER: 60.4 73.2 SCALE V_
INCHES. TIME OF CONCENTRATION: 22.3 MIN 5.0 MIN
JOB No. 220164-01-009
5. IMMEDIATELY AFTER THE INFILTRATION BASIN IS ESTABLISHED,THE VEGETATION WALL BE WATERED TWICE WEEKLY IF NEEDED UNTIL PLANTS 1.0"STORM EVENT: 0.078 CFS 0.000 CFS
BECOME ESTABLISHED(COMMONLY SIX WEEKS) 1-YEAR STORM EVENT: 2.112 CFO 13.62 CFO 0.000 CFS DATE SEPTEMBER 7,2023
2-YEAR STORM EVENT: 4.736 CFS 20.22 CFS 0.000 CFS
6. NO PORTION OF THE INFILTRATION BASIN WILL BE FERTILIZED AFTER THE INITIAL FERTILIZATION THAT IS REQUIRED TO ESTABLISH THE STORMWATER MANAGEMENT SYSTEM DETAILS 10-YEAR STORM EVENT: 15.12 CFO 40.47 CFS 1.315 CFO FILE No.
VEGETATION. 1 100-YEAR STORM EVENT: 36.22 CFS 76.68 CFS 46.12 CFO
ILANOT TO SCALE ` /
). THE VEGETATION IN AND AROUND THE BASIN WILL BE MAINTAINED AT A HEIGHT OF APPROAMATELY SIX INCHES. I
SHEET SCM-1
Cad Re name:V:\220164-Stonegate\220164-01-009(ENG)-Lancaster Subdivision Hoke Co Raeford NC\Engineering\Engineering Plans\Construction Documents\220164-01-009-SWD.dwg

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( IN FEET) D
1 inch= 30 ft. U
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215 215 CO a
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21 O \ or\\ EXISTING GRADE 210
FUTURE GRADE
OP OF
EMBANKMENT
ELEV=203.0
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�\ GRASS SPILLWAY rJ��Q:••EESSIo�;�v,
\ ELEV=201.7qw
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205 - \\ THIS REFER
SHEE OTETAIL 205 = SEAL ` •t
\ 1 . 051571 '
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`\ y ''•/,'.crwE �o as
62'-24"CLASS III RCP Ek 9.18% N\ A
N PLAN STATUS
200 N
200 09/07/23 INITIAL SUBMISSION
`\ 01/17/24 REVISED PER REVIEW
N.
7
BOTTOM OF INFILTRATION BASIN=200.0
DATE DESCRIPTION
MCB MCB CEP
DESIGN DRAWN CHKD
SCALE HV:1"=30'
-0+50 0+00 1+00 2+00
JOB No. 220164-01-009
INFILTRATION BASIN PROFILE VIEW DATE SEPTEMBER 7,2023
HORIZONTAL SCALE: 1"=30' FILE No.
VERTICAL SCALE: 1"=3' SCM-2
SHEET
Cad file name:V:\220164—Stonegate\220164-01-009(ENG)—Lancaster Subdivision Hoke Co Raeford NC\Engineering\Engineering Plans\Construction Documents\220164-01-009—SND.dwg