HomeMy WebLinkAboutR-419008NW 1/4 OF THE NW 1/4 AND THE NE 1/4 OF THE NW 1/4 SECTION 9, TOWNSHIP 23 NORTH, RANGE 05 EAST, W.M.
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DocuSign Envelope ID: 3B1B34D3-7EOA-476C-ADB3-4329FFEOC108 DocuSign Envelope ID: 3B1B34D3-7EOA-476C-ADB3-4329FFEOC108
KEY DIVIDER INTO SLOPE TO
PREVENT FLOW AROUND SIDES
EMERGENCY
OVERFLOW
SPILLWAY
POND LENGTH (3 TO 6 TIMES
THE MAX. POND WIDTH)
INFLO-------------
WO���
SILT FENCE OR RISER DISCHARGE TO To
EQUIVALENT DIVIDER PIPE CONVEYANCE, OUTLET, OR
LEVELSPREADER
RISER PIPE (PRINCIPAL SPILLWAY),
OPEN AT TOP WITH DEBRIS BARRIER, CREST OF
SEE STD. PLAN 234.20 FEMERGENCY
SPILLWAY
6' MIN. 12"MIN.
DEWATERING DEVICE
(SEE RISER DETAIL,
STD. PLAN 216.10)EMBANKMENT COMPACTED o
A PERVIOUS MATERIALS SUCH AS GRAVEL
12" OR CLEAN SAND SHALL NOT BE USED
3.5' ayG
WIRE -BACKED SILT FENCE, STAKED MIN.
HAY BALES WRAPPED WITH FILTER
FABRIC, OR EQUIVALENT DIVIDER
DEWATERING ORIFICE
DISCHARGE TO STABILIZED
CONCRETE BASE / CONVEYANCE, OUTLET, OR
LEVELSPREADER
NOTES:
1. CONDITION OF USE
1.1. A SEDIMENT POND SHALL BE USED WHERE THE CONTRIBUTING DRAINAGE AREA IS 3 ACRES OR MORE.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE POND SHALL BE DIVIDED INTO TWO ROUGHLY EQUAL VOLUME CELLS BY A PERMEABLE DIVIDER THAT WILL REDUCE TURBULENCE WHILE ALLOWING
MOVEMENT OF WATER BETWEEN CELLS. THE DIVIDER SHALL BE AT LEAST ONE HALF OF THE HEIGHT OF THE RISER. WIRE - BACKED, 2-TO 3 FOOT HIGH, EXTRA
STRENGTH FILTER FABRIC SUPPORTED BY TREATED 4"X4"s MAY BE USED AS A DIVIDER. ALTERNATIVELY, STAKED STRAW BALES WRAPPED WITH FILTER
FABRIC MAY BE USED.
2.2. IF THE POND IS MORE THAN 6 FEET DEEP, A DIFFERENT MECHANISM MUST BE PROPOSED.
2.3. TO AID IN DETERMINING SEDIMENT DEPTH, ONE -FOOT INTERVALS SHALL BE PROMINENTLY MARKED ON THE RISER.
3. MAINTENANCE STANDARDS
3.1. SEDIMENT SHALL HL REMOVED FROM THE POND WHEN IT REACHES 1 FOOT IN DEPTH.
3.2. ANY DAMAGES TO THE POND EMBANKMENTS OR SLOPES SHALL BE REPAIRED.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
A1110STD. PLAN - 216.00
V'RI
PUBLIC WORKS SEDIMENT POND PLAN VIEW AND p
DEPARTMENT CROSS SECTIONS[�4a""r"t'qi'n'c'by:
"yastucha 8/13/2020
�1=04491P DATE
SEDIMENT POND
NTS
6
C3.00
1 8:4
• Call 811
• ® two business days
before you dig
PROVIDE ADEQUATE STRAPPING
POLYETHYLENE CAP _\
PERFORATED POLYETHYLENE DRAINAGE
TUBING, DIAMETER 2" MIN. LARGER THAN
DEWATERING ORIFICE. TUBING SHALL
COMPLY WITH ASTM F667 AND AASHTO M294
/
RISER PIPE (PRINCIPAL SPILLWAY)
OPEN AT TOP WITH DEBRIS BARRIER,
SEE STD. PLAN 234.20
CORRUGATED
METAL RISER
3.5' MIN.
WATERTIGHT COUPLING
i— TACK WELD
DEWATERING ORIFICE, SCH 40 STEEL STUB, MIN. ° 6" MIN.
DIAMETER AS PER CALCULATIONS IN SECTION D.2.1.5.2 OF I
THE CITY OF RENTON SURFACE WATER DESIGN MANUAL 4 L �I a
° � a
° ° d a
n � 18" MIN.
CONCRETE BASE
(ALTERNATIVELY, METAL STAKES AND WIRE
° MAY BE USED TO PREVENT FLOTATION)
V° d °a ° a °
a
2 x RISER DIA. MIN...
1. SEE CONSTRUCTION PLANS FOg'SEECIFIC PROJECT REQUIREMENTS.
UNLESS OTHERWISE NOTED, DRAWING IS NOTTO SCALE (NTS)
STD. PLAN - 216.10
+� + PUBLIC WORKS eud6Y:
DEPARTMENT SEDIMENT POND RISER DETAIL 4 8/13/202
p�yart�ipn, Pastucha
glgRa�kfk{BG�¢,4�D. DATE
SEDIMENT POND RISER
NTS
1
CLEAR AND GRADE PERMIT
TJP
08/10/21
2
CLEAR AND GRADE PERMIT RESUBMITTAL
TJP
08/11/21
3
CLEAR AND GRADE PERMIT RESUBMITTAL
TJP
09/10/21
We
REVISION
C3.00
JSF SURVEYED:
ZLN
JSF DESIGNED:
JSF TJP/JRN
DRAWN:
TAD/KSA
CHECKED:
MNF
AP P R APPROVED:
JSF
I 8:z
ASPHALT SAW CUT LINE AT ENTIRE
PERIMETER OF 1:1.5 SLOPE TO
WITHIN THREE FEET OF FOUNDATION
OF STRUCTURE. OCCURS AROUND
ENTIRE A & B BUILDINGS
ALL EXISTING ASPHALT TO
REMAIN OUTSIDE OF BUILDING
FOOTPRINT FOR EROSION AND
SEDIMENT CONTROL
MEASURES. DEMOLITION AND
REMOVAL OF ASPHALT TO
OCCUR AT A LATER DATE.
09/10/2021
M
I—
C14
THREE—FOOT ORANGE SNOW FENCE
TO BE INSTALLED AT THE ENTIRE
PERIMETER OF ASPHALT SAWCUT
LINE AND ATTACHED TO FIVE—FOOT
METAL STAKES AT SIX—FOOT
ON —CENTER MAXIMUM. ZIP TIES TO
BE USED TO SECURE SNOW FENCE
TO METAL STAKES.
ASPHALT VARIES IN THICKNESS. SLOPE TO
BEGIN FOUR TO SIX INCHES BELOW TOP OF
ASPHALT AND TO BE COVERED WITH
VISQUEEN & SANDBAGS UNTIL BACKFILLING
OF STRUCTURE CAN BE ACHIEVED. SAND
BAGS TO BE SECURED BY NYLON ROPE
AND STAKING AS NECESSARY TO PREVENT
VISQUEEN FROM BEING MOVED DURING
WEATHER EVENTS. SLOPE TO BE
MAINTAINED THROUGHOUT CONSTRUCTION
UNTIL SUCH TIME SLOPE IS REMOVED AND
\'�\\1 REPLACED WITH BACKFILL TO STRUCTURE.
SNOW FENCE
NTS
1q)ff
1601 5th Avenue, Suite 1600
Seattle, WA 98101
206.622.5822
www.knff.cnm
SCALE:
VERTICAL: NAVD 1988
AS NOTED HORIZONTAL: NAD 1983/1991 CITY OF
RENTON
ONE INCH DATUM L)
AT FULL SCALE Planning/Building/Public Works Dept.
IF NOT ONE INCH
SCALE ACCORDINGLY
0
�I
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
DEVELOPMENT ENGINEERING 0SURFACE WATER UTILITY
msippo 09/27/2021 krevans 09/27/2021 '
DATE:
SOLERA
2842 NE SUNSET B LV D FIELDBOOK:
PAGE:
RENTON WA 98056
7 DRAWING NO:
C3.12
TESC DETAILS SHEET: Q OF: 9
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