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DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
2"x2" 14 GAUGE WIRE, OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED -
FILTER FABRIC
6' MAX -
POST SPACING MAY BE INCREASED I 12" MIN.
TO 8' IF WIRE BACKING IS USED I I 4"x4"MIN. TRENCH
UI BACKFILL TRENCH WITH NATIVE SOIL 7L111
OR 3/4TO 1-1/2" WASHED GRAVEL
2"x4" WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.)
NOTES:
1. CONDITIONS OF USE
1.1. SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS.
1.2. SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW. ANY CONCENTRATED
FLOW MUST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE GEOTEXTILE USED MUST MEET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MUST BE AVAILABLE ON SITE.
2' MIN
AOS (ASTM D4751)
30-100 SIEVE SIZE (0.60-0.15mm) FOR SILT FILM
50-100 SIEVE SIZE (0.30-0.15mm) FOR OTHER FABRICS
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.
2.2. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE BACKING OR CLOSER POST SPACING MAY BE REQUIRED
FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE.
2.3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL NOT BE STEEPER THAN 2H:1V
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
SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE.
2.5. FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOURS WHENEVER POSSIBLE.
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE SHALL BE REPAIRED IMMEDIATELY.
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
CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVE THE TRAPPED SEDIMENT.
3.4. SEDIMENT MUST BE REMOVED WHEN SEDIMENT IS 6 INCHES HIGH.
3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 214.00
CRIPUBLIC WORKS SILT FENCE PR 9/28/2018 I
DEPARTMENT GAZ
P�bk works AdmDATE
Barghausen
Consulting Engineers, Inc.
18215 72nd Avenue South
Kent, WA 98032
425.251.6222 barghausen.com
:45
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BOSAIR, LLC
NE114, OF THE NE1/4 OF SEC. 18,
TWP 23 N., RGE 5 EAST, W. M.
CITY OF RENTON KING COUNTY WASHINGTON
RECORD DRAWING
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
DRAINAGE GRATE
GRATE FRAME
SEDIMENT AND DEBRIS
DRAINAGE GRATE
(RECTANC
BI
FILTERED
WATER -
SECTION VIEW
ISOMETRIC VIEW
5" MAX.
— TRIM
OVERFLOW BYPASS
BELOW INLET GRATE DEVICE
1. PROTECTION SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR
CONSTRUCTION AREA, UNLESS THE RUNOFF THAT ENTERS THE CATCH BASIN WILL BE CONVEYED TO A SEDIMENT POND OR TRAP.
2. INLET PROTECTION SHALL BE USED TO PROTECT THE DRAINAGE SYSTEM.
3. THE CONTRIBUTING DRAINAGE AREA MUST NOT BE LARGER THAN ONE ACRE.
4. SIZE THE BELOW INLET GRATE DEVICE (BIGD) FOR THE STORMWATER STRUCTURE IT WILL SERVICE.
5. THE BIGD SHALL HAVE A BUILT-IN HIGH -FLOW RELIEF SYSTEM (OVERFLOW BYPASS).
6. THE RETRIEVAL SYSTEM MUST ALLOW REMOVAL OF THE BIGD WITHOUT SPILLING THE COLLECTED MATERIAL.
7. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION 8-01.3(15).
8. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE-THIRD OF THE AVAILABLE
STORAGE THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACED AT LEAST MONTHLY.
UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NTS)
STD. PLAN - 216.30
PR
PUBLIC WORKS APPR ED: DEPARTMENT CATCH BASIN INSERT GAZ 9/28/2018
P�bk works Admt,, DATE
3 RECORD DRAWING ZTW 9/27/21
2 REVISED SEWER/STORM AT SE CORNER OF BUILDING ZTW 8/18/21
1 REVISED UTILITIES AT SE CORNER OF BUILDING ZTW 5/24/21
NO. REVISION BY DATE APPR
:45
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6"
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FIBERMESH REINFORCING
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COMPACTED
DEPTH CRUSHED
SURFACING BASE COURSE
a.
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12" SUBGRADE COMPACTED TO 95%
CONCRETE PAVING SECTION
NOT TO SCALE
2" COMPACTED DEPTH —
CLASS 'B' A.C. PAVEMENT
4" COMPACTED DEPTH CRUSHED-7
ROCK BASE COURSE
NOTE:
GEOTECHNICAL ENGINEER SHALL VERIFY
PAVEMENT SECTION PRIOR TO CONSTRUCTION
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12" MIN. SUBGRADE COMPACTED TO 95%
NOTE:
GEOTECHNICAL ENGINEER SHALL BE ONSITE DURING PLACEMENT
OF FILL TO VERIFY THAT COMPACTION MEETS MINIMUM REQUIREMENTS
FOR PAVEMENT SECTION.
TYPICAL ASPHALT PAVING SECTION
NOT TO SCALE
R-416505
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
SURVEYED:BCE SCALE'
HORIZONTAL- NAD1983/1991 CITY OF CONSTRUCTION NOTES AND DETAILS
DESIGNED:
ZTW
RENTON Fo R
DRAWN:ZTW BOSAIR, LLC
ONE INCH DATUM
CHECKED: Z AT FULL SCALE Planning/Building/Public Works Dept. 289 E PERIMETER ROAD
IF NOT ONE INCH
APPROVED: SCALE ACCORDINGLY RENTON, WA 98057
DKB
DATE
9/27/21
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