SW4210701_Plansheet - SCM Detail_20211229

GRAVEL OVER RIP RAP
FOR ACCESS TO RISER
RIP -RAP AT PIPE OUTLET TRASH GUARD
SEE PLAN 6' VEGETATED SHELF
3' x 3' CONC. (6:1 SLOPE)
STRUCTURE
IN FLOW -► ORIFICE (ELEV. #7)
100 YR (ELEV. # 10 & # 1 1)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - �- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -�
----- 50 YR- - - - - - - FLOODWATER - - - - - - - - - - - - - - - - -------
,\\ \\ \\ \\ \\ \\ \\ \\ \----------------------------------------25 YR ELEV. 3
10'
MIN.
10 YR (ELEV. #4)
/\\ \------------------------------- 2 YR ELEV- # 5- - - - - - - TEMPORARY POOL - - - - - - - - - - - - - ---
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ( -- �----- - - - - - - - - - - - - -
NORMAL POOL --------------------- - PERM. POOL _LEVEL _------------------------
3/\\/,\\/\\/\\j\\j\\jj\\j\\j\\j\\j\\j
FOREBAY
\\//\\///\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//
3 WATER QUALITY 3' - 4' 4' 5' /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
1 15 - 20 %. OF POND VOL. PERMANENT POOL
1 INVERT RCP OUTLET PIPE WITH
/ \ (ELEV #6) BOTTOM OF POND E E 8
TOP OF DAM - ELEV. # 1
EMERGENCY SPILLWAY - ELEV. #2
3, /\\\//\ _-- _--------- o----_---Q------------- -- - L V. WATER TIGHT 0-RING GASKET JOINTS INVERT OUT
-�-�SEDIMENT STORAGE _ __ _ \ \ / \/ \/ \/ \ �, ASTM C 443 ELEV. #9
MIN. i i i t i .. i i 1\ i
PERMANENT POOL
POND SIDE SLOPE
FOREBAY -1t.
SIDE "3' f CLASS " I " RIP RAP
OR EARTHEN BAFFEL
POND BOTTOM J
FOREBAY BAFFEL DETAIL (AFTER CONVERSION)
PERMANENT DETENTION POND
4" SCH 40 PVC PIPE
WITH SCREW TYPE PLUG
BORED AND SECURELY
MOUNTED IN CONC. BOX
TOP OF BOX
ELEV. #7
1.0'
PERMANENT POOL ELEVATION = #10
.� --- - - - - - - - - - - - - - - ----
11
= 1.0'
v _j
p \ /I
= Z a- �/ o
L
= z SUBMERGED ORIFICE HOLE DRILLED •
w w INTO SCREW ON TYPE PVC CAP
N ¢ FOR SIZE SEE #11
Mj LLI
a_
o I I
BOTTOM OF POND BOTTOM OF RISER
ELEV. #6 ELEV. #8 ELL i
ELEV. #8
- - - - -1' SEDIMENT STORAGE - - - - - - - D o 0
\ 7\77\\-7 77\_X \ -/ \\' �\�\\�\�� PIPE
REMOVED I&MPLUGGED \\ D D
//\//\//\//\//\//\//\//� //\ FOR PERM. DESIGN
\\?\<
\\/\\/\\/\\/\\/\\�\\/\\�\x/\x�\�/\\ 6" SLUICE GATE
//\/\/\/\/\/ANCHOR BOX TO CONC BASE
CUT-OFF TRENCH
2' DEEP (1:1)
FOR PERMANENT STRUCTURES
10.25' x 7.25' x 3' MIN. SEEPAGE
DIAPHRAGM PLACED DOWNSTREAM OF
DAM CENTERLINE & CUT-OFF TRENCH
PERMANENT DESIGN - WET DETENTION BASIN CROSS SECTION
5% 5" EA. WAY WELDED
ALUMINUM RODS ANCHORED
TO STRUCTURE TO PREVENT
TAMPERING WITH GALVANIZED
BOLTS, HINGED ON ONE SIDE
FOR SERVICE ACCESS.
(SEE DETAIL E-27A)
3' (INSIDE DIM.) SQUARE
PRE -CAST CONC. STRUCTURE
24" BARREL / OUTLET PIPE
BMP #1 & BMP 2#: 6.50' LENGTH X 6.50' WIDTH X 2.50' DEPTH TOTAL WEIGHT MUST BE LARGER THAN: 8,432.50 LBS.
/ OR CAST AS ONE PIECE BMP #3 & BMP 4#: 6.00' LENGTH X 6.00' WIDTH X 2.00' DEPTH TOTAL WEIGHT MUST BE LARGER THAN: 6,036.40 LBS.
MIN. CONC. BASE SIZE:
BMP #5: 6.50' LENGTH X 6.50' WIDTH X 2.00' DEPTH TOTAL WEIGHT MUST BE LARGER THAN: 7,234.40 LBS.
CONCRETE RISER DETAIL - SIDE SECTION VIEW
1/4" SO. WIRE MESH
WITH STAINLESS #5 STONE OVER CLAMP OVER PIPE INLET
PIPE INLET
POND ORAN
6" PVC PIPE
F-
o c
3' (INSIDE DIM.) SQUARE
PRE -CAST CONC. STRUCTURE
ELEV. #7
4" SCH 40 PVC PIPE
WITH SCREW TYPE PLUG
6" SLUICE GATE 0°ir
SIDE SECTION
D
VIEW
PERM_ POOL 4-
L-
-
O❑
24" BARREL / OUTLET PIPE
-
ELEV. # 10
_ -
- -
FLOW OUT
°
D
°
°
SUBMERGED ORIFICE HOLE DRILLED
INTO SCREW ON TYPE PVC CAP
4' SCH 40 PVC PIPE
SEE PLANS FOR ORIFICE SIZE
-
WITH SCREW TYPE PLUG
SEE #11 FOR SIZE
BORED AND SECURELY a
MOUNTED IN CONIC. BOX I °
°
'
I
REMOVE SKIMMER
PLUG 4" PVC PIPE
ELEV. #8
-
L - - - - -
-�
c
CONC. BASE SLAB
ATTACH TO STRUCTURE
MIN. CONIC. BASE SIZE: 6'x6'x2'
CONCRETE RISER DETAIL - TOP
VIEW
CONCRETE
RISER DETAIL
- FRONT VIEW
BMP/BASINS 1 #, 2#9 3#9 4#9 5#
WET RETENTION BASIN
WITH WATER QUALITY DRAWDOWN ORIFICE
E-26
Fill
I
I I I
PIPE OUTLE
WELL-DEFINED
LINED
MIN. 1.5'
T
FILT
s �iI!s• s:�il!:3•
- FILTER LAYER
(GRAVEL OR FABRIC)
SECTION A -A
SPILLWAY CROSS SECTION
•. . .
will
,
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PLAN
POND SIDE SLOPE MIN. 5' BEYOND
TOE Of POND SLOPE
SEE PLAN FOR
�\ RIP RAP SIZE
INSTALL LEVEL & FLUSH
WITH POND BOTTOM 1
hkcn,\
FILTER LAYER
(FABRIC ONLY)
RIP -RAP APRON
AT POND INLETS
E-28
SPILLWAY
RIP -RAP APRON
OUTLET PROTECTION
La 8' x W 10' x Do 4'
d50 = 6" x 15" Thk.
SEE DETAIL E-6
INLET OUTLET PROTECTION
POND
NO.
PIPE
NO.
WIDTH
3 X Do
(FT)
LENGTH
La
(FT)
WIDTH
(FT)
THICKNESS
(DEPTH)
(IN)
RIP -RAP
SIZE d50
(IN)
1
14
9
34
15
22
6
2
1 51
1 13.5
1 38
1 20
1 27
1 12
3
68
9
39
18.5
13.5
6
4
146
7.5
24
1 13
15.75
7
5
1210.5
22
1 25.5
15.75
7
6
12
1 14
13.5
6
NOTES
1. d50 MIN. STONE SIZE - 6'
RIP RAP SIZE (dmax) - 1.5 TIMES d50 SIZE
2. STODe th - 1.5 TIMES THE dmax
NE DIAMETER BUT NOT LESS
3. IN A WELL-DEFINED CHANNEL EXTEND
THE APRON UP THE CHANNEL
BANKS TO AN ELEVATION OF 6"
ABOVE THE MAXIMUM TAILWATER
DEPTH OR TO THE TOP OF THE CHANNEL,
WHICHEVER IS LESS.
4. A FILTER FABRIC OR BLANKET SHOULD BE
INSTALLED BETWEEN THE RIPRAP
AND SOIL FOUNDATION.
ID
SPILLWAY SLOPE MIN. 5' BEYOND
IAY-------- INSTALL LEVEL & FLUSH
WITH NATURAL GROUND
-IIIIII-III=\
I1 I-
:
FILTER FABRIC
SEE PLAN FOR
RIP RAP SIZE
EMERGENCY SPILLWAY RIP -RAP DETAIL
E-27
TOE OF DAM
MIN. 1.5' THICK
RIP RAP APRON
5" x 5" EA. WAY WELD[
ALUM. OR STEEL RODS
ANCHOR TO STRUCTURE
TO PREVENT TAMPERING
(ALL STEEL TO BE PAINTE
4"N6" BOTTOM PLATE
WITH HOLES FOR 1 /2"
ANCHOR BOLTS
EQUAL EQUAL
OUTSIDE TO OUTSIDE OF BOX
EQUAL 5" 5" 5" 5" EQUAL
OUTSIDE TO OUTSIDE OF BOX
BAR TRASH RACK DETAILS
E-29
ANGLE
VARIES
Retention Pend/Wet Pond
Seeding Schedule
Botanical Name
Common Name
Ounces/Acre
Permanent Grasses(Sedges/Rushes.
SQlboschcenus fluviat/lis
River Bulrush
1.00
Carer cn,statella
Crested oval Sedge
0.50
Carly lurrcla
B©ttlehrush Sedge
0.00
Carex vulprn©rdea
Brown Fox Sedge
2.00
ymu a ofr 1r7rCu.
Virginia Wild Rye
24.00
Y
Glycerra stnata
Fowl Manna Grass
1..00
Juncus effusus
Common Rush
1.00
Leer°sla cryzo des
Rice Cut Grass
1.00
Panrcum virgatum
Switch Grass
ZOO
Schceincplectus tabemaemcntar Great Bulrush
3.00
S'crrpu.s atrcvrrens
(Dark Green Rush
2.00
Scrrpuas c yperrnus
Wool Grass
1.00
Total
41.50
Temporary Cover:
Avena satrva
Common Oat
512.00
Tota l
512• till
SEDIMENT BASIN TO PERMANENT
RETENTION POND CONVERSION SEQUENCE:
WHEN STABILIZATION IS SUBSTANTIALLY COMPLETE AND THE SITE HAS BEEN INSPECTED
BY ENGINEER AND EROSION CONTROL OFFICAL, THE TEMPORARY SEDIMENT BASINS SHALL
BE CONVERTED TO PERMANENT WET RETENTION PONDS. CONVERSION FROM SEDIMENT
BASINS TO STORMWATER PONDS SHALL ONLY BE DONE AFTER FIRST OBTAINING APPROVAL
FROM NC DEQ's DAM SAFETY PROGRAM.
ALL SEDIMENT SHALL BE REMOVED AND PROPERLY DISPOSED OF. REMOVE THE
TEMPORARY BAFFLES. ENSURE THAT THE POND IS RETURNED TO ITS ORIGINAL SHAPE
AND SIZE, INCLUDING POND BOTTOM, WALLS, TOP OF DAM, AND ALL EARTHEN
EMBANKMENTS. THE PERMANENT BASIN SHALL BE LINED WITH CLAY AND COMPACTED TO
95% PROCTOR TO RETAIN THE PERMANENT POOL AND LIMIT INFILTRATION. INSTALL THE
ROCK & GRAVEL BAFFEES PER DETAILS. FOR DRY EXTENTED DETENTION BASINS, BASIN
BOTTOM MUST BE GRADED TO 1 %-2% GRADE FROM ALL DIRECTIONS TO DIRECT FLOWS
TO OUTLET CONTROL ORIFICE.
DETACH SKIMMER ASSEMBLY FROM THE EXISTING PVC STUB IN BOTTOM OF RISER.
PLUG/SEAL THE REMAINING PVC ORIFICE TO PREVENT LEAKING.
INSTALL THE PERMANENT WATER QUALITY DRAWDOWN ORIFICE. THE PVC PIPE ASSEMBLY
SHALL BE BORED AND SECURELY MOUNTED INTO THE RISER. THE TOP OF THE
TURNED -DOWN DRAIN PIPE SHALL BE FITTED WITH A SCREW -TYPE PLUG, WHILE THE
BOTTOM SHALL BE CAPPED. THE CAP SHALL BE DRILLED TO THE SPECIFIED SIZE TO ACT
AS THE DRAWDOWN ORIFICE. FOR DRY PONDS INSTALL PERMANENT POOL AT CONTROL
ORIFICE.
ENSURE THAT THE RISER ASS6MBLY IS FREE FROM LEAKS AND CRACKS, AND THE TRASH
RACK IS SECURELY FASTENED. REMOVE ANY DEBRIS FROM THE ASSEMBLY.
SEED AND STABILIZE ALL REMAINING DISTURBED AREAS PER THE SEEDING SPECS. INSTALL
REQUIRED PLANTINGS ON BASIN SHELVES AS SHOWN IN DETENTION BASIN DETAILS AND
LANDSCAPING NOTES. ALL PLANTS SHALL BE PROPERLY MAINTAINED ACCORDING TO
MAINTENANCE SCHEDULE.
Gupton's Royal
Design Group
CIVIL ENGINEERING • SITE PLANNING
STORMWATER DESIGN
LANDSCAPE DESIGN • LAND SURVEYING
RDG
PO BOX 1070
KING, NC 27021
OFFICE 336-985-6519
E-MAIL [e-mail]
CORPORATE LICENSE NO: C-0423
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PROGRESS
DRAWINGS
GOVERNMENTAL
PERMITS
APPLIED
FOR
DO NOT
USE FOR
CONSTRUCTION
REVISIONS:
07/01 /20
BID SET
01/19/21
EROS. SUB.
02/22/21
CONVERT NOTE
03/19/21
EROS
03/26/21
EROS
06/01/21
UPDATE
08/26/21
UPDATE
12/20/21
UPDATE
SURVEYED BY: OTHERS
DRAWN BY: DHB
DRAWN BY: MDE
DRAWN BY: BSH
DESIGNED BY: HBG
APPROVED BY: HBG
CA
E
360 -
y ',,,G I N E,.• ' O
GVQ
SHEET TITLE:
STORMWATER POND
DETAILS
OF 9 88 06
0
DATE:
04/01 / 19
PROJECT NO:
12804-19D

Gupton's Royal
Design Group
CIVIL ENGINEERING o SITE PLANNING
STORMWATER DESIGN
LANDSCAPE DESIGN o LAND SURVEYING
I
PO BOX 1070
KING, NC 27021
OFFICE 336-985-6519
E-MAIL [e-mail]
CORPORATE LICENSE NO: C-0423
C3
z
Y
PROGRESS
DRAWINGS
GOVERNMENTAL
PERMITS
APPLIED
FOR
DO NOT
USE FOR
CONSTRUCTION
REVISIONS:
07/01 /20
BID SET
01 /19/21
EROS. SUB.
02/22/21
CONVERT NOTE
03/19/21
EROS
03/26/21
EROS
06/01/21
UPDATE
08/26/21
UPDATE
12/20/21
UPDATE
SURVEYED BY: OTHERS
DRAWN BY: DHB
DRAWN BY: MDE
DRAWN BY: BSH
DESIGNED BY: HBG
APPROVED BY: HBG
,,,,,,,,,,,,,
%
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= E -
360 -
,9 �INE0-
SHEET TITLE:
STORMWATER POND
STAGE/STORAGE
& DESIGN DATA
(w)OF 19
DATE: 04/01 / 19
PROJECT NO: 12804-19D