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UNDISTURBED OR WATER SURFACE NOT
PROTECTED SLOPE. TO EXCEED ORIGINAL
O 1 FT. MIN FREEBOARD COMPACTED TO DocuSign Envelope ID:6EECF566-602A-4E4A-6436-A317AA638878
SLOPE NOT TO GROUND ELEVATION 90% OF THE MODIFIED PROCTOR DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
Q EXCEED 15% MAXIMUM DRY DENSITY (ASTM D1577)
wII �I I 11111 I ) \ I DRAINAGE GRATE 5" MAX. ///��\
TRIM / \, 3"-5", SEE NOTE 2.2
I— hI III I' I — T-30', SEE NOTE 2.3
GRATE FRAME
JOINTS IN FILTER FABRIC SHALL BE SPLICED AT _ OVERFLOW BYPASS 8"-1 D" DIA.
L� D J J 1 POSTS. USE STAPLES, WIRE RINGS, OR d
�J EQUIVALENT TO ATTACH FABRIC TO POSTS
v�� 2 /' ROLL SPACING
ORIGINAL GROUND J SEDIMENT, ORGANIC MATTER,
SURFACE BELOW INLET GRATE DEVICE DEPENDS ON SOIL
TYPE AND SLOPE
STEEPNESS AND NATIVE SEEDS ARE
CAPTURED BEHIND THE ROLLS
2"x2" 14 GAUGE WIRE, OR
2' MIN WIDTH 2" TO 4" ROCK CENTER UNLESS STAR NGTH FABRIC U EDD SEDIMENT AND DEBRIS r-
y
LEVEL BOTTOM OTHERWISE SPECIFIEDSTRAW ROLLS MUST
FILTER FABRIC 2' MIN. PLACED ALLONG SLOPES WOODEN STAKE
FILTERED CONTOURS
NOTES. WATER
4
1. PROVIDE ROCK CHECK DAMS EVERY 50 FT. OR EVERY 5' OF VERTICAL FALL.
2. DIMENSIONS: 1 FT MINIMUM DEPTH(D) BY 2 FT MINIMUM BOTTOM WIDTH s MAx 12 MIN. yy�.
POST SPACING MAY BE INCREASED 4"x4" MIN. TRENCH
TO 8' IF WIRE BACKING IS USED I I
3. SWALE GRADE SHOULD NOT EXCEED 5%. SIDE SLOPES SHOULD BE 2:1 OR LESS. LJ BACKFILLTRENCH WITH NATIVE SOIL �� /
OR 3/4' TO 1-1/2' WASHED GRAVEL ADJACENT ROLLS SHALL
TIGHTLY ABUT
4. OUTLET SHALL CONSIST OF RIP RAP DISCHARGING TO STABILIZED OUTLET SEDIMENT POND OR SECTION VIEW
, 2"x4' WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.) � =>
LEVEL SPREADER. 1 /
DRAINAGE GRATE��'
5. IF DESIGNED AS A PERMANENT DRAINAGE FEATURE, MAY BE USED IN COMBINATION WITH (RECTANGULAR GRATE SHOWN) RETRIEVAL SYSTEM (TYP.)
INTERCEPTOR DRAIN.
LIVE STAKE
J
NOTES:
NTS 1. CONDITIONS OF USE
--(:1 1.1. SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS.
Interceptor Swale 1.2. SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW. ANY CONCENTRATED NOTES:
FLOW MUST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND. OVERFLOW BYPASS (TYP.)
1. CONDITIONS OF USE
2. DESIGN AND INSTALLATION SPECIFICATIONS
n_ n 2.1. THE GEOTEXTILE USED MUST MEET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE. BELOW INLET GRATE DEVICE 1.1. INSTALL ON DISTURBED AREAS THAT REQUIRE IMMEDIATE EROSION PROTECTION.
6 =12 PERFORATE 1.2. USE ON SLOPES REQUIRING STABILIZATION UNTIL PERMANENT VEGETATION CAN BE ESTABLISHED.
PIPE AS NECESSARY
TOP 0 F PIPE SHALL B E
6" MIN ABOVE GRADE
PROVIDE SOLID COVER
ADS (ASTM D4751)
30-100 SIEVE SIZE (0.60-0.15mm) FOR SILT FILM
50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS
NS
ISOMETRIC VIEW
_ _ _--_
1.3. CAN BE USED ALONG THE PERIMETER OF A PROJECT, AS A CHECK DAM IN UNLINED DITCHES AND AROUND TEMPORARY STOCKPILES.
I'4. WATTLES CAN BE STAKED TO THE GROUND USING WILLOW CUTTINGS FOR ADDED REVEGETATION.
1.5. RILLING CAN OCCUR BENEATH AND BETWEEN WATTLES IF NOT PROPERLY ENTRENCHED, ALLOWING WATER TO PASS BELOW AND BETWEEN WATTLES.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. IT IS CRITICAL THAT WATTLES ARE INSTALLED PERPENDICULAR TO THE FLOW DIRECTION AND PARALLEL TO THE SLOPE CONTOUR.
2.2. NARROW TRENCHES SHOULD BE DUG ACROSS THE SLOPE, ON CONTOUR, TO A DEPTH OF 3 TO 51NCHES ON CLAY SOILS AND SOILS WITH GRADUAL SLOPES.
ON LOOSE SOILS, STEEP SLOPES, AND DURING HIGH RAINFALL EVENTS. THE TRENCHES SHOULD BE DUG TO A DEPTH OF 5 TO 7 INCHES, OR 112 TO 2/3 OF THE
WATER PERMITTIVITY (ASTM D4491)
0.02 SEC-, MINIMUM
GRAB TENSILE STRENGTH (ASTM D4632)
180 LBS. MIN. FOR EXTRA STRENGTH FABRIC
100 LBS. MIN. FOR STANDARD STRENGTH FABRIC
GRAB TENSILE ELONGATION (ASTM D4632)
30% MAX. (WOVEN)
ULTRAVIOLET RESISTANCE (ASTM D4355)
70% MIN.
RUNOFF WITH NOTES: THICKNESS OF THE WATTLE.
2.2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED 2.3. START CONSTRUCTION OF TRENCHES AND INSTALLING WATTLES FROM THE BASE OF THE SLOPE AND WORK UPHILL. EXCAVATED MATERIAL SHOULD BE
EDIMENT DISCHARGE TO SEDIMENT FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE. 1. PROTECTION SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR SPREAD EVENLY ALONG THE UPHILL SLOPE AND COMPACTED USING HAND TAMPING OR OTHER METHOD. CONSTRUCT TRENCHES AT CONTOUR INTERVALS
S 2.3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL NOT BE STEEPER THAN 2H:1 V CONSTRUCTION AREA, UNLESS THE RUNOFF THAT ENTERS THE CATCH BASIN WILL BE CONVEYED TO A SEDIMENT POND OR TRAP. OF 3 TO 30 FEET APART DEPENDING ON THE STEEPNESS OF THE SLOPE, SOIL TYPE, AND RAINFALL. THE STEEPER THE SLOPE THE CLOSER TOGETHER THE
POND VIA TEM P FORCE MAIN 2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4'X4" TRENCH MAY BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE FABRIC IS WELL BURIED AND TRENCHES SHOULD BE CONSTRUCTED. VERTICAL DISTANCE BETWEEN WATTLES IS NOT TO EXCEED 10 FEET.
0 0 0
i SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE.
2. INLET PROTECTION SHALL BE USED TO PROTECT THE DRAINAGE SYSTEM. 2.4. INSTALL THE WATTLES SNUGLY INTO THE TRENCHES AND ABUT TIGHTLY END TO END. DO NOT OVERLAP THE ENDS.
5 a 2,5. FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOURS WHENEVER POSSIBLE. 2.5. INSTALL STAKES AT EACH END OF THE WATTLE, AND AT 4 FOOT CENTERS ALONG THE ENTIRE LENGTH OF THE WATTLE.
3. MAINTENANCE STANDARDS 3. THE CONTRIBUTING DRAINAGE AREA MUST NOT BE LARGER THAN ONE ACRE. 2.6. IF REQUIRED, INSTALL PILOT HOLES FOR THE STAKES USING A STRAIGHT BAR TO DRIVE HOLES THROUGH THE WATTLE AND INTO THE SOIL.
. SIZE THE BELOW INLET GRATE DEVICE BIGD) FOR THE STORMWATER STRUCTURE IT WILL SERVICE. 2.7. AT A MINIMUM, WOODEN STAKES SHOULD BE APPROXIMATELY 3/4 X 314 X 24 INCHES. WILLOW CUTTINGS OR 3/8-INCH REBAR CAN ALSO BE USED FOR STAKES.
4
3.1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY. ( 2.8. STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE, LEAVING 2 TO 3 INCHES OF THE STAKE PROTRUDING ABOVE THE WATTLE.
0 0 0 3.2. IF CONCENTRATED FLOWS ARE EVIDENT UPHILL OF THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND.
�\ \ 3.3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING 5. THE BIGD SHALL HAVE A BUILT-IN HIGH -FLOW RELIEF SYSTEM (OVERFLOW BYPASS). 3. MAINTENANCE STANDARDS
0 0 0 o CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVE THE TRAPPED SEDIMENT.
o / 3.4. SEDIMENT MUST BE REMOVED WHEN SEDIMENT IS 61NCHES HIGH. 6. THE RETRIEVAL SYSTEM MUST ALLOW REMOVAL OF THE BIGD WITHOUT SPILLING THE COLLECTED MATERIAL. 3.1. INSPECT WATTLES PRIOR TO FORECASTED RAIN, DAILY DURING EXTENDED RAIN EVENTS, AFTER RAIN EVENTS, WEEKLY DURING THE WET SEASON, AND AT
0 0 0 3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. TWO WEEK INTERVALS AT ALL OTHER TIMES AI THE YEAR.
i 7. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION 8-01.3(15). 3.2. REPAIR OR REPLACE SPLIT, TORN, RAVELING, OR SLUMPING WATTLES
0 0 0 PROVIDE 12 MIN 3.3. REMOVE SEDIMENT ACCUMULATIONS WHEN EXCEEDING 112 THE HEIGHT BETWEEN THE TOP OF THE WATTLE AND THE GROUND SURFACE.
8. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE-THIRD OF THE AVAILABLE
FILTERED RUNOFF ° 0 0 WASHED ROCK AROUND STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY.
/ O ° PERIMETER OF PIPE UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
0 0 o STD. PLAN - 214.00 STD. PLAN - 216.30
WRAP WITH PERMEABLE rPROM: APPR ED •.�PUBLIC WORKSAPPR D:o 0 0 PUBLIC WORKSa PUBLIC WORKS . STRAW WATTLES 9/28/2018 1 :45 AN
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FILTER FABRIC IPRI DEPARTMENT SILT FENCE GAZ 9/28/2018 :45 AN PUBLIC
DEPARTMENT CATCH BASIN INSERT GAZ 9/28/2018 I :45 At � DEPARTMENT GAZ
DATE
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wdmwo,�rdmm«.nw,
m 0 0 0 24"-36" PVC OR HDPE PIPE
W/ 2" DIA WEEP HOLES OR
APPROVED EQUAL
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WIRE TIES
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SUMP PUMP AND MOTOR
WATER LEVEL
CONCRETE BLOCKS
NTS_(: NTS NTS6 7 NTS n
Temporary Sump and Pump Silt Fence Inlet Protection Straw Wattles a
5/8" WIRE ROPE PROVIDE SECURE
END ATTACHMENT AT CORNER AND
GATE POSTS AND PROVIDE RUNNING
ATTACHMENT AT LINE POSTS AND
NEAR CENTER OF EACH FENCE PANEL
TRUSS ROD 3/8" DIA TOP RAIL
W/ TENSION DEVICE 1.666 INCH O.D.
STRETCHER LINE POST (TYP)
BAR 2.375 INCH O.D.
IN
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
---- --- V DEVELOPMENT ENGINEERING
HBray 06/13/2025
BRACE RAIL TENSION WIRE NTS 1 0 NTS 11
AND CABLE CONCRETE BLOCK Not Used Not Used
1.666 INCH O.D. A• Jq�,
ti of �,asy O
STD WGT GALVANIZED
�� BID SET SE / 10/2 SURVEYED: SCALE: DATE:
CORNER POST Q'ti �
�� 1 PERMIT COMMENTS SE /14/2 DESIGNED: HORIZONTAL: NAD 19NAVD 198883/1991 RSD TRANSPORTATION EXPANSION OS 21 25
� � �t CITY OF //
W ' 1 T FIELDBOOK:
2 ADDENDUM 1 AJ /17/2 SSE/REc RENTON
PAGE:
� 3 ADDENDUM 2 AJ 5/1/25 °RPWNt
DJD/AJJ ONE INCH DATUM � DRAWING N0:
as667 JAJ AT FULL SCALE Planning/Building/Public Works Dept. T.E.S.C. DETAILS IF NOT ONE INCH C21 0
NTS R�G�sTEgC�° 4 PERMIT COMMENTS SE /21/2 CHECKED:
Construction FencingsSIUNAL v�� APPROVED: SCALE ACCORDNG— SHEET: OF:
N0. REVISION BY DATE APPR 6 OF 3
R-434306
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