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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
--1�------------I�
6' MAX.
POTO 8' ST IF WIRE BACKINGS USEDMAY BE ED I I 4"x4"MIN. TRENCH
BACKFILL TRENCH WITH NATIVE SOIL
OR 3/4" TO 1-1/2" WASHED GRAVEL
2"x4" WOOD POSTS, STEEL FENCE POSTS, OR EQUIVALENT (TYP.)
CONSTRUCTION NOTES AND DETAILS
7
2' MIN.
12" MrININ.
NOTES:
1. CONDITIONS OF USE
1I .1. SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS.
1.2. SLT 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.
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 2HAV
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. T 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)
PUBLIC WORKS PR
STD. PLAN - 214.00
V'RI
DEPARTMENT SILT FENCE GAZ 9/28/2018 1
Public Works Administrator DATE
Barghausen
Consulting Engineers, Inc.
18215 72nd Avenue South
Kent, WA_ 98032
425.251.6222 barghausen.com
NO.
Kf.1
FOR
405 COMMERCE CENTER
PORTION OF THE SE1/4, OF THE NW1/4 OF SEC. 19,
TWP 23 N., RGE 5 EAST, W. M.
CITY OF RENTON KING COUNTY WASHINGTON
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
REVISION
DRAINAGE GRATE
GRATE FRAME
C=
SEDIMENT AND DEBRIS
FILTERED
WATER —
DRAINAGE GRATE
(RECTANGULAR GRATE SHOWN)
m
01"
BELOW INLET GRATE DEVICE
5" MAX.
TRIM
OVERFLOW BYPASS
BELOW INLET GRATE DEVICE
RETRIEVAL SYSTEM (TYP.)
OVERFLOW BYPASS (TYP.)
ISOMETRIC VIEW
NOTES:
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 IS NOT TO SCALE (NTS)
STD. PLAN - 216.30
PUBLIC WORKS APPR ED:
DEPARTMENT CATCH BASIN INSERT GAZ 9/28/2018
Public Works Administrator DATE
BY I DATE I APPR
SURVEYED: BCE
DESIGNED:
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DRAWN:
z w
CHECKED:
ZTW
APPROVED:
DKB
ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL- NAD 1983/1991
DATU M
!4
I�
W
3" COMPACTED DEPTH V
HMA PAVEMENT
6" COMPACTED DEPTH CRUSHED —
ROCK SURFACING BASE COURSE U
Loo° O o °o 0 0 °° °g0 ° o on °8° O
O O° O O ° 0000 oorp con o0
L1 J
12" SUBGRADE COMPACTED TO 95%
ASPHALT PAVING SECTION
NOT TO SCALE
CITY OF
RENTON
Planning/Building/Public Works Dept.
R-410705
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
DEVELOPMENT ENGINEERING
swarlick 02/20/2020
DATE:
CONSTRUCTION NOTES AND DETAILS 09/25/19
405 C O MME R C E CENTER FIELDBOOK:
PAGE.
EVERWEST ADVISORS LLC
DRAWING N0:
1099 -18TH STREET, SUITE 2900
DENVER, CO 80202 SHEET: C5 OF: 5