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INFLOW
RISER PIPE
(PRINCIPAL SPILLWAY)
OPEN AT TOP WITH
TRASHRACK \
DEWATERING DEVICE
(SEE RISER DETAIL)
FLOW
STABILIZED
ER TLET OR
CRESTOF
6• MIN. WIDTH
EMERGENCY SPILLWAY
1' MIN. EMEIANKMENi COMPACTED 95%.
PERVIOUS MATERIALS SUCH AS
} GRAVEL OR CLEAN SAND SHALL
NOT BE USED.
-------------
WIRE-BACKED SILT FENCE, / DEWAORIFICE
TERING ' 1111 -I III- Ill Il- I
STAKED HAYBALES WRAPPED �1 I =11 1 11-11 1-111-
WITH FILTER FABRIC, OR DISCHARGE TO STABILIZED
EQUIVALENT DIVIDER CONCRETEBASE CONVEYANCE, OUTLET OR
LEVEL SPREADER
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 DIVIDERTHAT 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 - BACKE ,
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 MAYBE 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 BE REMOVED FROM THE POND WHEN IT REACHES 1 FOOT IN DEPTH.
3.2. ANY DAMAGES TO THE POND EMBANKMENTS OR SLOPES SHALL BE REPLACED.
PUBLIC WORKS SEDIMENT POND PLAN VIEW STD. PLAN - 218.00
DEPARTMENT AND CROSS SECTIONS
gN,,f MARCH 2O08
5' MAX.
DRAINAGE GRATE TRIM
rc
GRATE FRAME
3
SEDIMENT AND DEBRIS
a
OVERFLOW BYPASS
•° C BELOW INLET GRATE DEVICE
°
FILTERED
WATER
SECTION VIEW
DRAINAGE GRATE
-RECTANGULAR GRATE SHOWN RETRIEVAL SYSTEM (TVP.)
BELOW INLET GRATE DEVICE OVERFLOW BYPASS(TYP.)
ISOMETRIC VIEW
NOTCS
1. Size the Below Inlet Grate Device (BIGD) for the storm water structure It will service.
2. The BIGD shall have a bulk -In high -flow relief system (oveAlow bypass).
3. The retrieval system must allow removal of the BIGD without spilling the collected material.
4. Perform maintenance In accordance with Standard Specification M1.3(15).
Y STD. PLAN - 218.30
* PUBLIC WORKS CATCH BASIN FILTER
DEPARTMENT
FNTp MARCH 2O08
EROSION CONTROL WET SEASON REQUI REM ENTS
Sites with exposed soils during the WET SEASON (October 1 to April 30) shall be subject to special
erosion control provisions. These special provisions are required in addition to the standard TESC
cover measures. Please notify contractor of these requirements.
All projects that clear, grade or otherwise disturb the site, must provide erosion and sediment
controls to the maximum extent possible, to prevent the transport of sediment from the project
site to downstream drainage facilities, water resources, and adjacent properties.
The following provisions for wet season construction are detailed in Appendix D of the 2009 King
Count Surface Water Manual. Please ensure your site is protected and complies with the special
provisions outlined below The basic requirements are:
1. The allowed time that a disturbed area can remain unworked without cover measures is
reduced to two (2) days, rather than seven (7) days.
2. Stockpiles, steep cut, and fill slopes areto be covered or protected with mulch, sod, plastic
covering, jute mat etc. if left unworked for more than 12 hours.
3. Cover materials (plastic, matting, etc) sufficient to cover all disturbed areas, shall be
stockpiled and available on site.
4. All areas that are to be unworked during the wet season shall be seeded within one week
of the beginning of the wet season. Seeded should be completed by September 23.
5. Mulch is required to protect all seeded areas.
S. Fifty linear feet of silt fence (and the necessary stakes) per disturbed acre must be
stockpiled on site.
7. Property installed silt fencing is mandatory along the downslope of all disturbed areas of
the site. Perimeter protection filters runoff and reduces the amount of sediment that may
leave the site.
B. Sediment retention is required unless no offsite discharge is anticipated for the specified
design flow.
9. Construction road and parking lot stabilization are required for all sites unless the site is
underlain by course -grained soil.
10. Surface water controls are required unless no offsite discharge is anticipated for the
specified design flow.
11. Phasing and more conservative BMPS must be evaluated for construction activity near
surface waters.
12. Any runoff generated by dewatering shall be treated through construction of a sediment
trap when there is sufficient space or by releasing the water to a well vegetated, gently
sloping area. Since pumps are used for dewatering, it may be possible to pump the
sediment -laden water well away from the surface water so that vegetation can be more
effectively utilized for treatment. A straw bale filter shall be placed around the discharge
from the dewatering pump. If there is not space for a sediment trap or 25 feet of suitable
vegetation, other filtration methods shall be required.
13. The frequency of maintenance review should be increased from weekly to daily where
warranted.
E%L�SSVA �OPQ
/
INSTALL DRIVEWAY CULVERT IF THERE
IS A ROADSIDE DITCH PRESENT, AS
PER CITY ROAD STANDARDS
4"-8" QUARRY SPALLS
GEOTEXTILE
DRIVEWAYS SHALL BE PAVED TO THE EDGE
OF RAW PRIOR TO INSTALLATION OF THE
CONSTRUCTION ENTRANCE TO AVOID
DAMAGING OF THE ROADWAY
IT IS RECOMMENDED THAT THE
ENTRANCE BE CROWNED SO THAT
RUNOFF DRAINS OFF THE PAD
,y
12" MIN. THICKNESS PROVIDE FULL WIDTH OF
NOTES MIGRESWEGRESS AREA
1. CONDITION OF USE
1.1. CONSTRUCTION ENTRANCE SHALL BE STABILIZED WHEREVER TRAFFIC WILL BE LEAVING A CONSTRUCTION SITE AND TRAVELING ON
PAVED ROADS OR OTHER PAVED AREAS WITHIN 1,000 FEET OF THE SITE.
GRAB TENSI LE STREBNGTH(ASTM D4751)
200 PSI MIN.
GRAB TENSI LE ELONGATION (ASTM D4632)
30-A MAX.
MULLEN BURST STRENGTH (ASTM D3786-80A)
400 PSI MIN.
AOS (ASTM D4751)
20-45 (U.S. STAN DARDSIEVE SIZE)
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. HOG FUEL (WOOD BASED MULCH) MAY BE SUBSTITUTED FOR OR COMBINED WITH QUARRY SPALLS IN ARES THAT WILL BOT BE USED
FOR PERMANENT ROADS. HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS. THE INSPECTOR MAY
AT ANYTIME REQUIRE THE USE OF QUARRY SPALLS IF THE HOG FUEL IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO
PAVEMENT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT.
2.2. FENCING SHALL BE INSTALLED AS NECESSARY TC RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE.
2.3. WHENEVER POSSIBLE, THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM, COMPACTED SUBGRADE. THIS CAN SUBSTANTIALLY
INCREASE THE EFFECTIVENESS OF THE PAD AND REDUCE THE NEED FOR MAINTENANCE.
3. MAINTENANCE STANDARDS
3.1. QUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS.
3.2. IF THE ENTRANCE IS NOT PREVENTING SEDIMENT BEING TRACKED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE
STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE
ENTRANCE, OR THE INSTALLATION OF THE WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON AN AREA COVERED WITH
CRUSHED ROCK, AND WASHED WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND.
3.3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY
SWEEPING SHALL BE REMOVED OR STABILIZED ON SITE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET,
EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBLIC SAFETY. IF IT NECESSARY TO WASH THE STREETS, A
SMALL SUMP MUST BE CONDUCTED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED AND
DISCHARGED APPROPRIATELY.
3.4. ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY.
3.5. IF VEHICLES ARE ENTERING OR EXITING THE SITES AT POINTS OTHER THAN THE CONSTRUCTION ENTRANCE(S), FENCING SHALL BE
INSTALLED TO CONTROL TRAFFIC.
ti�Y o �(� `♦ PUBLIC WORKS STABILIZED STD. PLAN - 215.10
DEPARTMENT CONSTRUCTION ENTRANCE
'�'�•N,tO MARCH 2O08
OFJP E 1JE�
° °P`c� OF WASy�NcT,°°e.
13932 SOUTHEAST 159TH PLACE °�
3 REVISED PER CITY COMMENTS
RENTON, WASHINGTON 98058 ° 2 REVISED PER CITY COMMENTS
PHONE: 425-260-3412°`�c�STER��°�° 1 REVISED PER CITY COMMENTS
CONTACT: DARRELL OFFE, P.E. Fss/ONAL° N0. REVISION
01/15/2018
POLYETHYLENE CAP
PERFORATED POLYETHYLENE
DRAINAGE TUBING, DIAMETER
MIN. 2" LARGER THAN
DEWATERING ORIFICE
TUBING SHALL COMPLY
WITH ASTM F667 AND
AASHTO M294,
PROVIDE
ADEQUATE
STRAPPING
CORRUGATE
METAL RISER
3.5' MIN.
WATERTIGHT
DEWATERING ORIFICE, SCHEDULE
COUPLING
TACK WELD
40 STEEL STUB MIN.
/
DIAMETER AS PER CALCULATIONS
6' MIN.
18' MIN.
ALTERNATIVELY, METAL STAKES
AND WIRE MAYBE USED TO
CONCRETE BASE
PREVENT FLOTATION
2% RISER DIA. MIN,
tir ° STD. PLAN - 216.10
Gn PUBLIC WORKS SEDIMENT POND
�P��� DEPARTMENT RISER DETAIL
�:N,tp MARCH 2O08
JOINTS IN FILTER FABRIC SHALL BE SPLICED
AT POSTS. USE STAPLES, WIRE RINGS, OR
El1I 1IVAI PNT Tn ATTArH EARR1r TA Pr.CTC
6' MAX.
u
�
POST SPACING MAY BE INCREASED
TO 8' IF WIRE BACKING IS USED
2"X2' BY 14 Ga. WIRE OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED
FILTER FA
MINIMUM 4'k4"TRENCH
BACKFILL TRENCH WITH
NATIVE SOIL
2-X4" WOOD POSTS, STEEL FENCE /
POSTS, REBAR, OR EQUIVALENT
NOTES
1. CONDITION 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 INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW.
ANY CONCENTRATED FLOW MOST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2,1. THE GEOTEXTILE USED MOST MET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MOST BE
AVAILABLE ON SITE.
I1 1:S1IE SIZE(0.60-D15MM) FOR SILT FILM
A05 (ASTM D4751)
SO10051EVESIZE 0.30-0. 15MM) FOR OTHER FABRICS
WATER PERMFTTIVITV ASTM D491
0.Q SEC"-1 MINIMUM
GRABTENSILESTP.ENCHT(ASTMD4632)
180LBS. MIN. FOREXTRASTRENGH FABRIC
300 LBS. MIN. FOR STANDARD STRENGHT FABRIC
GRAB TENSILE ELONGATION (ASTM D4632)
30Y MAX.
ULTRAVIOLATE RESISTANCE (ASTM D43551
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 ATYPICAL SILT FENCE IS USED, THE STANDARD 4X4 TRENCH MAY NOT BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE
S WELL BURIED AND SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT
FENCE.
3. MAINTENANCE STANDARDS
3.1. ANY DAMAGE SHALL BE REPAIR IMMEDIATELY.
3.2. IF CONCENTRATED FLOES ARE EVIDENT UPHILL OD 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 REMOVED THE TRAP
SEDIMENT.
3,4. SEDIMENT MOST 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.
8Y
n� ; PUBLIC WORKS SILT FENCE STD. PLAN - 214.00
DEPARTMENT
NT MARCH 2O08
SURVEYED:
TERRANE SURVEYING
DESIGNED:
DLO 1 /2018 D.L. OFFE, P.E.
DLO 7 9 201DRAWN:
/ D.L. OFFE, P.E.
DLO 2/201 7 CHECKED:
SCALE:
ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
Typical V-Shaped Channel Cross -Section
With Rock
Center \e
6• _ 9•
(150-225mm)
Key in Fabric
Grass -Lined _/
Filter Fabric
Typical Parabolic Channel Cross -Section
With Rock Center
for Base Flow
h • i V, 6„ - 9„
(150-225mm)
Key in Fabric\/
With Channel Filter Fabric
Liner
Typical Trapezoidal Channel Cross -Section
Design Depth
IV Nim
Overcut channel 2" (50mm) to allow
bulking during seedbed preparation
With Rock Center
and growth of vegetation.
Filter Fabric for Base Flow
NOT TO SCALE
Figure II-4.2.1
Typical Grass -Lined Channels
DEPARTMENT OF
Revised June2015
ECOLOGY
Please see http://www.ecy.wa.gov/copyright.html for copyright notice including permissions,
State of Washinqton
limitation of liability, and disclaimer.
C TY OF
RENTON
["OR
V40V _
Planning/Building/Public Works Dept.
R-391907
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
RENTON 14 PLAT
KENDALL HOMES, INC.
TESCP DETAILS & NOTES
6201 NE 4th STREET
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DATE:
01/15/2018 Z
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