HomeMy WebLinkAboutR-396206NE 1/4 OF THE SW 1/4 AND SE 1/4 OF THE NW 1/4, SEC 29, TWN 23, RGE 5 E, KING COUNTY, WASHING TON
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IN 6"x6" MIN. TRENCH
PILE AT 12" INTERVALS
v , TURN
THExEND UNDER 4' AND STAPLE AT 12" INTERVALS
NOTES
1. CONDITION OF USE
1.1. FOR PERMANENT STABILIZATION OF SLOPES 2H:1V OR GREATER AND WITH MORE THAN 10 FEET OF VERTICAL RELIEF.
1.2. IN CONJUNCTION WITH SEED FOR FINAL STABILIZATION OF A SLOPE, NOT FOR TEMPORARY COVER. HOWEVER, THEY MAY BE USED FOR
TEMPORARY APPLICATIONS AS LONG AS THE PRODUCT IS NOT DAMAGED BY REPEATED HANDLING.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. INSTALLATION IS CRITICAL TO THE EFFECTIVENESS IF THIS PRODUCT IF GOOF GROUND CONTACT IS NOT ACHIEVED, RUNOFF CAN
CONCENTRATE UNDER THE PRODUCT, RESULTING IN SIGNIFICANT EROSION..
2.2. JUTE MATTING MUST BE USED IN CONJUNCTION WITH MULCH. EXCELSIOR, WOVEN STRAW, BLANKETS, AND COIR ( COCONUT FIBER) BLANKETS
MAY BE INSTALLED WITHOUT MULCH.
2.3. PURELY SYNTHETIC BLANKETS ARE ALLOWED, BUT SHALL ONLY BE USED FOR LONG-TERM STABILIZATION OF WATERWAYS. THE ORGANIC
BLANKETS, ARE BETTER FOR SLOPE PROTECTION AND SHORT-TERM WATERWAY PROTECTION BECAUSE THEY RETAIN AND PROVIDE ORGANIC
MATTER TO THE SOIL, SUBSTANTIALLY IMPROVING THE SPEED AND SUCCESS OF RE -VEGETATION.
3. MAINTENANCE STANDARDS
3.1. GOOD CONTACT WITH THE GROUND MOST BE MAINTAINED, AND THERE MOST NOT BE EROSION BENEATH THE BET OR BLANKET.
3.2. AREAS OF THE NET OR BLANKET THAT ARE DAMAGED OR NOT CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLED.
3.3. IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED.
F
PUBLIC WORKS SLOPE INSTALLATIONS STD. PLAN - 215.20
DEPARTMENT MARCH 2O08
INFLOW
THE POND LENGTH SHALL BE 3 TO 6
TIMES THE MAXIMUM POND WIDTH
EMERGENCY OVERFLOW
SPIL
SILT FENCE
` RISEIf'PIPE % / / I CDISCHARGE ONVEYANCE,
LEVEL YANCESPREA, OUTLET OR
RISER PIPE
(PRINCIPAL SPILLWAY)
OPEN AT TOP WITH
TRASH RACK \
DEWATERING DEVICE (SEE RISER DETAIL)��jr
CREST OF
6' MIN. WIDTH
EMERGENCY SPILLWAY
I
EMBANKMENT COMPACTED S6%.
PERVIOUS MATERIALS SUCH AS
GRAVEL OR CLEAN SAND SHALL
NOT BE USED.
-
WIRE -BACKED SILT FENCE, DEWATERING III _ _ III "' "'
STAKED HAYBALES WRAPPED ORIFICE -III I -III I I:
WITH FILTER FABRIC, OR :III- -III-III-III DISCHARGE TO STABILIZED
EQUIVALENT DIVIDER CONCRETE BASE 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 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 - 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 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 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.
�Y
�� PUBLIC WORKS SEDIMENT POND PLAN VIEW
STD. PLAN - 216.00
'' DEPARTMENT AND CROSS SECTIONS
gN,tp MARCH 2O0B
Call 2 Business Days Before You Dig
811 or 1-800-424-5555
Utilities Underground Location Center
JOINTS IN FILTER FABRIC SHALL BE SPLICED
AT POSTS. USE STAPLES, WIRE RINGS, OR
EQUIVALENT TO ATTACH FABRIC TO POSTS_
6' MAX
L-J
POST SPACING MAY BE INCREASED
TO W IF WIRE BACKING IS USED
2N2" BY 14 Ga. WIRE OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED
FILTER FABRIC
MINIMUM 4"x4"TRENCH
BACKFILL TRENCH WITH
NATIVE SOIL
2'k4' WOOD POSTS, STEEL FENCE
POSTS, REBAR, OR EQUIVALENT
2F
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.
3D-100 SIEVE SIZE (D.60-0.15MM( FORSI LT FILM
A05 (ASTM D4751)
60-100 SIEVE SIZE (0.30-D.15MM) FOR OTHER FABRICS
WATER PERMITTIVITY (ASTM D491)
D.02SEC^-1 MINIMUM
GRAB TENSILE STRENCHT (ASTM D4632)
1RD LBS. MIN. FOR EXTRA STRENGH FABRIC
1DD LBS. MIN. FOR STANDARD STRENGHT FABRIC
GRAB TENSILE ELONGATION (ASTM D4632)
3D % MAX.
ULTRAVIOLATE 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 4X4 TRENCH MAY NOT BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE
IS 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. SEDMENT 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.
ti�Y STD. PLAN - 214.00
� �� � PUBLIC WORKS SILT FENCE
'' DEPARTMENT
gN tp MARCH 2O0B
Polyethylene cap
Provide adequate
ping
Perforated polyethylene
drainage tubing, diametCorrugated
min. 2" larger thanmetal
riser
dewatering orifice.
,Tubing
t:Watertight
MIN.
shall comply3.5
with ASTM F667 andTack
Dewateling orifice, chedule,
AASHTO M294Diameteraspercalculations
weld
40 steel stub min.
I 6" min. r---
18" min.
Alternatively, metal stakes
Concrete base
and wire may be used to
prevent flotation
2X riser dia. Min.
Figure 4.2.20 - Sediment Pond Riser Detail
15 th A N N 1 T4'r- o C! A Ry
Surveying
Engineering
LDCIPlanning
20210 142nd Avenue NE Ph. 425.806.1869
Woodinville, WA 98072 Fx. 425.482.2893
www.LDCcorp.com
0 1 AS -BUILT DRAWINGS
NO.
DRIVEWAYS SHALL BE PAVED TO THE EDGE
OF R-O-W 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
INSTALL DRIVEWAY CULVERT IF THERE
IS A ROADSIDE DITCH PRESENT, AS
PER CITY ROAD STANDARDS
12" MIN. THICKNESS PROVIDE FULL WIDTH OF
NOTES \II INGRESS/EGRESS 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 TENSILE STREBNGTH (ASTM D4751)
200 PSI MIN.
GRABTENSILE ELONGATION (ASTM D4532)
30'A MAX.
MULLEN BURSTSTRENGTH (ASTM D3785-80A)
400 PSI MIN.
AOS (ASTM D4751)
20-4S (U.S. STANDARD SIEVE 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 TO 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.
PUBLIC WORKS STABILIZED
ti�Y � STD. PLAN - 215.10
� �� �
DEPARTMENT CONSTRUCTION ENTRANCE MARCH 2O0B
FN'f
TESC SEDIMENTATION POND
BOTTOM ELEVATION
393.00
BOTTOM AREA (SF)
16 SF
TOP ELEVATION
397.00
TOP AREA (SF)
784 SF
SIDE SLOPES
3:1
OVERFLOW ELEV.
396.00
OUTLET INVERT ELEV.
393.50
ORIFICE INVERT ELEV.
393.50
ORIFICE SIZE
1 1 /8"0
NOTE:
FOR POND, ORIFICE, EMERGENCY OVERFLOW SIZING
SEE SWPPP APPENDIX A.
EROSION CONTROL NOTES
1.
BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A
PRECONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF
RENTON, PUBLIC WORKS DESIGN ENGINEER.
2.
ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS
PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED IN THE
CY)
FIELD AND OBSERVED DURING CONSTRUCTION.
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3.
ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE
Cfl
CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR
N
CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT
O
ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT
O
FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL
SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND
T
POTENTIAL FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION,
0
MAINTENANCE, REPLACEMENT AND ADDITIONS TO
EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE
RESPONSIBILITY OF THE PERMITTEE.
4.
THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON
THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET
ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND
UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITTEE
SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL
FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION
CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF
CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF
THE PERMITTEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE
CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES,
CY)
OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO
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PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE
O
RECEIVING DRAINAGE SYSTEM.
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5.
APPROVAL OF THIS PLAN IS FOR EROSION SEDIMENTATION CONTROL
ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE
DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR
(�
RETENTION FACILITIES.
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6.
DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH
Q
ALL PROJECT DISTRIBUTED SOIL AREAS GREATER THAN 5,000 SQUARE
FEET, THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12
J
HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC
COVERING.
7.
IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE
NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE,
ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH
MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL
TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE
WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH
SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER
IT IS IN THE INTEREST OF THE PERMITTEE, BUT MUST BE AUGMENTED
WITH MULCHING, NETTING OR OTHER TREATMENT APPROVED BY THE
LO
CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD.
0
8.
FOR ALL EROSION/SEDIMENTATION CONTROL PONDS WHERE THE DEAD
O
STORAGE DEPTH EXCEEDS 6 INCHES, A FENCE IS REQUIRED WITH A
O
MINIMUM HEIGHT OF THREE (3) FEET, 3:1 SIDE SLOPES.
O
9.
A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24 FEET X 50 FEET
X 8 INCHES OF 4 TO 6 INCH QUARRY SPALLS SHALL BE LOCATED AT
r
ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE
CONSTRUCTION SITE.
AS-BOIL T
DRAWINGS
N COMPLIANCE WITH CITY OF RENTON STANDARDS
MEV
12-13-181
SURVEYED:
LDC
SCALE:
AS NOTED
,�, „�;N3,1",
DATU MCHECKED:
%C T Y 0
RENTON
V.
Plan ning/Building/Public Works Dept.
RENTON SPEC/AL CARE COMMUNITY, LLC
RENTON SPECIAL CARE COMMUNITY
17033 108TH AVE SE, RENTON, WA 98055
TESC NOTES AND DETAILS
R-396206
08-17
DESIGNED: MEV
DRAWN: NC
ONE INCH
rFIELDBOOK:
-02
MEV
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
REVISION
BY
DATE
APPR
APPROVED: MEV
OF: 23
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