HomeMy WebLinkAboutR-412716DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
DocuSign Envelope ID: 6EEC F586-602A-4E4A-B436-A317AA638878
DocuSign Envelope ID;6EECF5B6-602A-4E4A-B436-A317AA638878
DocuSign Envelope ID: 6EECF586-602A-4E4A-B436-A317AA638878
5" MAX.
DRAINAGE GRATE TRIM
GRATEFRAME _
C- OVERFLOW BYPASS
a
BELOW INLET GRATE DEVICE
SEDIMENT AND DEBRISs,,x4?,. *' -
FILTERED
WATER -
SECTION VIEW
DRAINAGE GRATE
(RECTANGULAR GRATE SHOWN) RETRIEVAL SYSTEM (TYP.)
BELOW INLET GRATE DEVICE
\ILV
ISOMETRIC VIEW
OVERFLOW BYPASS (TYP.)
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 SIGD WITHOUT SPILLING THE COLLECTED MATERIAL.
7. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION B-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 NOTTO SCALE (NTS)
STD. PLAN - 216,30
a�• PUBLIC WORKS APPR ED:
DEPARTMENT CATCH BASIN INSERT GAZ 9/28/2018
vortsaamxay."ro< DATE
0 CATCH BASIN INSERT
C6.0 NTS
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
2
2 MAX.
LEVEL BOTTOM MAX-
12" MIN.
'\ �2'MIN.�
SWALE SPACING DEPENDS ON SLOPE GRADIENT
NOTES:
1. CONDITIONS OF USE
1.1. REQUIREDAT:
1.1.1. THE TOP OF ALL SLOPES IN EXCESS OF 3H:1V AND WITH MORE THAN 20 FEET OF VERTICAL RELIEF.
1.1.2. AT INTERVALS ON ANY SLOPES THAT EXCEEDS THE DIMENSIONS SPECIFIED BELOW.
AVERAGE SLOPE
SLOPE PERCENT
FLOW PATH LENGTH
20H:1V (OR LESS)
3-5%
300 FEET
(10 TO 20)H:1V
5-10%
200 FEET
(4 TO 10)H:1 V
10-25%
100 FEET
(2 TO 4)H:1 V
25-50%
50 FEET
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. FOR SLOPES STEEPER THAN 2H:1V WITH MORE THAN 10 FEET OF VERTICAL RELIEF, BENCHES MAYBE CONSTRUCTED OR CLOSER SPACED
INTERCEPTOR SWALES MAYBE USED. THE DESIRED MEASURE MUST BE DESIGNED BY AN ENGINEER TO EFFECTIVELY INTERCEPT THE HIGH VELOCITY
RUNOFF TO A SEDIMENT POND OR TRAP.
2.2. CONSTRUCTION TRAFFIC OVER TEMPORARY SWALES SHALL BE MINIMIZED.
3. MAINTENANCE STANDARDS
3.1. DAMAGE RESULTING FROM RUNOFF OR CONSTRUCTION ACTIVITY SHALL BE REPAIRED IMMEDIATELY.
3.2. IF THE FACILITIES DO NOT REGULARLY RETAIN STORM RUNOFF, THE CAPACITY AND10R FREQUENCY OF THE SWALES SHALL BE INCREASED.
UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NTS)
STD. PLAN - 217.10
PUBLIC WORKS INTERCEPTOR SWALE PPR 9/28/2018 I
'+ DEPARTMENT GAZ
nmtsaamn�ar.,.v DATE
0 INTERCEPTOR SWALE
:45 At
:45 AN
2" z2" 14 GAUGE WIRE, OR
EQUIVALENT, IF STANDARD
STRENGTH FABRIC USED
FILTER FABRIC
2MIN.
- -I B' MAX. �I I I I 12- MIN.
POST SPACING MAY BE INCREASED 4'k4" MIN. TRENCH
TO 8' IF WIRE BACKING IS USED I I 1 I
BACKFILL TRENCH WITH NATIVE SOIL IJ
OR 3/4" TO 1-1/2'WASHED GRAVEL
n4" 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. 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.
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
WATER PERMITTIVITY (ASTM D4491)
0.02 SEC' MINIMUM
GRAB TENSILE STRENGTH (ASTM D4632)
180 LBS. MIN. FOR EXTRA STRENGTH FABRIC
100 LBS. MN. 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. 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 61NCHES HIGH.
3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED.
UNLESS OTHERWISE NOTED, DRAWING 15 NOTTOSCALE (NTS)
AOX%L
STD. PLAN - 214.00
.GAZ
PUBLIC WORKS SILT FENCE PR 9/28/2018 I
mm
4, DEPARTMENT
.ortsaam mnmr DATE
SILT FENCE
C6.0 NTS
DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
PLANTING BEDS/UNDISTURBED UNDISTURBED TURF (LAWN) AREAS,
VEGETATION, SEE NOTE 1 SEE NOTE 1
UNDISTURBED 0" GRASS: SEED OR SOD
NATIVE VEGETATION _
UNDISTURBED NATIVE SOIL\/�Y/�\.//�\//�\/�\//�\ /. /\� / UNDISTURBED NATIVE SOIL
OPTION 1 - NO DISTURBANCE
PLANTING BEDS TURF (LAWN)AREAS
74" ARBORIST WOOD
E STD. LAN 62.60 //
// -
GRASS: SEED OR SOD
�ft _i
II�I�I
3" OF COMPOST INCORPORATED
-uI
I _ ___III I�11=11H11 _
1 TI I -
=I- =
175" OF COMPOST INCORPORATED INTO
1-75"
INTO 5" OF SITE SOIL (TOTAL
- - I� -I I1= =1
OF SITE SOIL (TOTAL AMENDED DEPTH
AMENDED DEPTH OF 9.51, FOR A =
_-
I I I h 1
OF 9.5', FOR A SETTLED DEPTH OF 8')
SETTLED DEPTH OF 8")
II111
-1
I- 1
II
SUBSOIL SCARIFIED 4"BELOW
SUBSOIL SCARIFIED4"BELOW
/ // //�/ -; _ ;Ll. %�� /
COMPOST AMENDED LAYER
COMPOST AMENDED LAYER
\ \
�\ \
(12-8 ELOW SOIL SURFACE)
(12- BELOW SOIL SURFACE)
�\ /\ // ,A
OPTIONS 2, 3, AND 4 - AMEND IN PLACE OR STOCKPILE AND AMEND
PLANTING BEDS
TURF LAWN, ARF,,S
/
GRASS: SEED OR SOD
MULCH, B SEE STD.
0'
PLAN 262.60
III
II III
II9E=-IIII Eiiiiiii
III
NOTES-
III III�III
IIIII II
1. AREAS OF NO DISTURBANCE TO BE FENCED
AND EXISTING VEGETATION AND SOIL TO BE
I I
I I -I III I-
PROTECTED FROM CONSTRUCTION IMPACTS.
6" IMPORTED
=
6' IMPORTED
TOPSOIL MIX
- I - IIIII-
III - I III - III I
TOPSOIL MIX
GENERAL NOTES:
(COMPACTED
(COMPACTED
DEPTH)
DEPTH)
- =
6'
- - -
1. TO MEASURE SETTLED DEPTH, WATER SOIL
SUFFICIENTLY TO FULLY SATURATE WITHOUT
CAUSING EROSION
SUBSOIL IS 2. COMPOST TO MEET STD. PLAN 262.60.
SUBSOIL IS
// \�\\\ //\//\
�\ _ �:
SCARIFIED 6"
BELOW IMPORTED 3. COMPACTION OF TOPSOIL (WHERE REQUIRED)
SCARIFIED 6
\ \\ \ \\
/\�� '- TI
TOPSOIL MIX TO BE TO 85% OF STANDARD PROCTOR.
BELOW IMPORTED
/\�/
TOPSOIL MIX.-\\
'\\"\\\ \\�
\� \ \ • �j�/
4. SEE CONSTRUCTION PLANS FOR SPECIFIC
17
PROJECT REQUIREMENTS.
OPTION
5 - IMPORTED
TOPSOIL
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 264.00
• PUBLIC WORKS
APPR ED.
SOIL AMENDMENT SECTIONS
GAZ 9/28/2018 I
DEPARTMENT
vmtsaamm�sr.".0 DATE
0 SOIL AMENDMENT SECTIONS
NTS C6.0 NTS
cPm*ote r r a
ENGINEERING PLLC
321 3rd Ave South, Suite 406
Seattle, Washington 98104
ph 206.596.7115
Ld coterraengineering.com
2
REVISION
:45 m
CONSTRUCTION ENTRANCE NOTES:
1. DRIVEWAYS SHALL BE PAVED TO
THE EDGE OF THE RIGHT-OF-WAY
PRIOR TO INSTALLATION OF THE
CONSTRUCTION ENTRANCE TO
AVOID DAMAGING OF THE
ROADWAY.
2. 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
ROADSTANDARDS
4"-8' QUARRY SPALLS
GEOTEXTILE
15' MIN.
PROVIDE FULL WIDTH OF
-1}- INGRESSIEGRESS AREA
12" MIN. THICKNESS J
NOTES:
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.
1.2. FOR RESIDENTIAL CONSTRUCTION PROVIDE STABILIZED CONSTRUCTION ENTRANCES FOR EACH RESIDENCE IN ADDITION TO THE MAIN SUBDIVISION
ENTRANCE. STABILIZED SURFACES SHALL BE OF SUFFICIENT LENGTHIWIDTH TO PROVIDE VEHICLE ACCESSIPARKING, BASED ON LOT SIZE/CONFIGURATION.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. A SEPARATION GEOTEXTILE SHALL BE PLACED UNDER THE SPALLS TO PREVENT FINE SEDIMENT FROM PUMPING UP INTO THE ROCK PAD. THE GEOTEXTILE
SHALL MEET THE FOLLOWING STANDARDS:
GRAB TENSILE STRENGTH (ASTM D4632)
200 LBS. MIN.
GRAB TENSILE ELONGATION (ASTM D4632)
30% MAX. (WOVEN)
CBR PUNCTURE STRENGTH (ASTM 06241)
495 U.S. MIN.
ADS (ASTM D4751)
20-45 (U.S. STANDARD SIEVE SIZE)
2.2. DO NOT USE CRUSHED CONCRETE, CEMENT. OR CALCIUM CHLORIDE FOR CONSTRUCTION ENTRANCE STABILIZATION BECAUSE THESE PRODUCTS RAISE PH
LEVELS IN STORMWATER AND CONCRETE DISCHARGE TO SURFACE WATERS OF THE STATE IS PROHIBITED.
2.3. HOG FUEL (WOOD BASED MULCH) MAY BE SUBSTITUTED FOR OR COMBINED WITH QUARRY SPALLS IN AREAS THAT WILL NOT BE USED FOR PERMANENT ROADS.
HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS. THE INSPECTOR MAY AT ANY TIME 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.
2A. FENCING SHALL BE INSTALLED AS NECESSARY TO RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE.
2.5. 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 FROM 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 A WHEEL
WASH. IF WASHING IS USED. IT SHALL BE DONE ON AN AREA COVERED WITH CRUSHED ROCK, AND WASH 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 IS NECESSARY TO WASH THE STREETS, A SMALL SUMP MUST BE CONSTRUCTED. THE SEDIMENT WOULD THEN BE
WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED AND DISCHARGED APPROPRIATELY. WASH WATER MUST BE PUMPED BACK ONTO THE SITE AND
CANNOT DISCHARGE TO SYSTEMS TRIBUTARY TO SURFACE WATERS.
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(5). FENCING SHALL BE INSTALLED TO CONTROL
TRAFFIC.
UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NTS)
AOUSTD. PLAN - 215.10
PQ�t�• PUBLIC WORKS PPROVFD
'I` DEPARTMENT STABILIZED CONSTRUCTION ENTRANCE GAZ 9/28/2018 1
vorbaa,m,ast."ro< DATE
0 STABILIZED CONSTRUCTION ENTRANCE
NTS
r
P
..�yt► . a illlj it/��
:45 At
3'-30', SEE NOTE 2.3
1
ROLL SPACING
DEPENDS ON SOIL
TYPE AND SLOPE
STEEPNESS
SEDIMENT, ORGANIC MATTER,
AND NATIVE SEEDS ARE
CAPTURED BEHIND THE ROLLS
STRAW ROLLS MUST BE
` PLACED ALONG SLOPE
CONTOURS
ADJACENT ROLLS SHALL
\1 / TIGHTLY ABUT
LIVE STAKE
WOODEN STAKE
0" DIA.
NOTES:
1. CONDITIONS OF USE
I.I. INSTALL ON DISTURBED AREAS THAT REQUIRE IMMEDIATE EROSION PROTECTION.
1.2. USE ON SLOPES REQUIRING STABILIZATION UNTIL PERMANENT VEGETATION CAN BE ESTABLISHED.
1.3. CAN BE USED ALONG THE PERIMETER OF A PROJECT, AS A CHECK DAM IN UNLINED DITCHES AND AROUND TEMPORARY STOCKPILES.
1.4. 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 7INCHES. OR 112 TO 213 OF THE
THICKNESS OF THE WATTLE.
2.3. START CONSTRUCTION OF TRENCHES AND INSTALLING WATTLES FROM THE BASE OF THE SLOPE AND WORK UPHILL. EXCAVATED MATERIAL SHOULD BE
SPREAD EVENLY ALONG THE UPHILL SLOPE AND COMPACTED USING HAND TAMPING OR OTHER METHOD. CONSTRUCT TRENCHES AT CONTOUR INTERVALS
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
TRENCHES SHOULD BE CONSTRUCTED. VERTICAL DISTANCE BETWEEN WATTLES IS NOT TO EXCEED 10 FEET,
2.4. INSTALL THE WATTLES SNUGLY INTO THE TRENCHES AND ABUT TIGHTLY END TO END. DO NOT OVERLAP THE ENDS.
2.5. INSTALL STAKES AT EACH END OF THE WATTLE, AND AT 4 FOOT CENTERS ALONG THE ENTIRE LENGTH OF THE WATTLE.
2.6. IF REDOIRED, INSTALL PILOT HOLES FOR THE STAKES USING A STRAIGHT BAR TO DRIVE HOLES THROUGH THE WATTLE AND INTO THE SOIL.
2.7. AT A MINIMUM, WOODEN STAKES SHOULD BE APPROXIMATELY 314 X 314 X 24 INCHES. WILLOW CUTTINGS OR 318-INCH REBAR CAN ALSO BE USED FOR STAKES.
2.8. STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE, LEAVING 2 TO 3 INCHES OF THE STAKE PROTRUDING ABOVE THE WATTLE.
3. MAINTENANCE STANDARDS
3.1. INSPECT WATTLES PRIOR TO FORECASTED RAIN, DAILY DURING EXTENDED RAIN EVENTS, AFTER RAIN EVENTS, WEEKLY DURING THE WET SEASON, AND AT
TWO WEEK INTERVALS AT ALL OTHER TIMES OF THE YEAR.
3.2. REPAIR OR REPLACE SPLIT, TORN, RAVELING, OR SLUMPING WATTLES
3.3. REMOVE SEDIMENT ACCUMULATIONS WHEN EXCEEDING 1/2 THE HEIGHT BETWEEN THE TOP OF THE WATTLE AND THE GROUND SURFACE.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NITS)
STD. PLAN - 213.40
a PUBLIC WORKS STRAW WATTLES A9/zs/zols I
PPR R&D
"` DEPARTMENT GAZ
.",t,aam r.or DATE
4N STRAW WATTLES
NTS
DocuSign EnvelopelD:6EECF586-602A-4E4A-B436-A317AA638878
Figure 1. TREE PROTECTION FENCE DETAIL. DRIPLINE METHOD
A. CONSTRUCTION STORAGE PROHIBITED: THE APPLICANT MAY NOT FILL, EXCAVATE, STACK OR STORE ANY EQUIPMENT, DISPOSE OF ANY MATERIALS,
SUPPLIES OR FLUIDS, OPERATE ANY EQUIPMENT, INSTALL IMPERVIOUS SURFACES, OR COMPACT THE EARTH IN ANY WAY WITHIN THE AREA DEFINED
BY THE DRIP LINE OF ANY TREE TO BE RETAINED.
B. FENCED PROTECTION AREA REQUIRED: PRIOR TO DEVELOPMENT ACTIVITIES, THE APPLICANT SHALL ERECT AND MAINTAIN SIX-FOOT (6') HIGH CHAIN
LINK TEMPORARY CONSTRUCTION FENCING AROUND THE DRIP LINES OF ALL RETAINED TREES OR AT A DISTANCE SURROUNDING THE TREE EQUAL
TO ONE AND ONE -QUARTER FEET (1-1/4') FOR EVERY ONE INCH (1") OF TRUNK CALIPER, WHICHEVER IS GREATER, OR ALONG THE PERIMETER
OF A TREE PROTECTION TRACT. PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50') INDICATING THE WORDS, "NO TRESPASSING
-PROTECTED TREES," OR ON EACH SIDE OF THE FENCING IF LESS THAN FIFTY FEET (50'). SITE ACCESS TO INDIVIDUALLY PROTECTED TREES OR
GROUPS OF TREES SHALL BE FENCED AND SIGNED. INDIVIDUAL TREES SHALL BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL
PROVIDE SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES.
C. PROTECTION FROM GRADE CHANGES: IF THE GRADE LEVEL ADJOINING TO A TREE TO BE RETAINED IS TO BE RAISED, THE APPLICANT SHALL
CONSTRUCT A DRY ROCK WALL OR ROCK WELL AROUND THE TREE. THE DIAMETER OF THIS WALL OR WELL MUST BE EQUAL TO THE TREE'S DRIP
LINE.
D. IMPERVIOUS SURFACES PROHIBITED WITHIN THE DRIP LINE: THE APPLICANT MAY NOT INSTALL IMPERVIOUS SURFACE MATERIAL WITHIN THE AREA
DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED, UNLESS OTHERWISE APPROVED BY THE CITY.
E. RESTRICTIONS ON GRADING WITHIN THE DRIP LINES OF RETAINED TREES: THE GRADE LEVEL AROUND ANY TREE TO BE RETAINED MAY NOT BE
LOWERED WITHIN THE GREATER OF THE FOLLOWING AREAS: (1) THE AREA DEFINED BY THE DRIP LINE OF THE TREE, OR (11) AN AREA AROUND THE
TREE EQUAL TO ONE AND ONE-HALF FEET (1-1/2') IN DIAMETER FOR EACH ONE INCH (1") OF TREE CALIPER. A LARGER TREE PROTECTION
ZONE BASED ON TREE SIZE, SPECIES, SOIL, OR OTHER CONDITIONS MAY BE REQUIRED.
F. MULCH LAYER REQUIRED: ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND EVENLY WITH A MINIMUM OF THREE
INCHES (Y) OF BARK MULCH PRIOR TO INSTALLATION OF THE PROTECTIVE FENCING. EXCEPTIONS MAY BE APPROVED IF THE MULCH WILL
ADVERSELY AFFECT PROTECTED GROUND COVER PLANTS. �ii I �0
G.
ENSURE
TREES NG (ARIEED DURING PROTECTEDC ROMRDEVEON: THE LOPMENTAPPLICANT SHALL ACTIVTII S AND/OR ETONPRUNERBIFIED RANCHESOAND ROOTS, FE ILI EN A(� IAP U l� I
APPROPRIATE FOR ANY TREES AND GROUND COVER THAT ARE TO BE RETAINED. ((�� nn n W C
:45 AA H. ALTERNATIVE PROTECTION: ALTERNATIVE SAFEGUARDS MAY BE USED IF DETERMINED TO PROVIDE EQUAL OR GREA ER TR'NRQRQN V�MAVV
APPROVAL FROM THE CURRENT PLANNING PROJECT MANAGER. THE INFORMATION ON THIS DRAWING
INDICATES CHANGES MADE TO THE
CONSTRUCTION DOCUMENTS BASED UPON
TREE PROTECTION DETAIL UTILITY AS -BUILT SURVEY PREPARED BY
D.R. STRONG CONSULTING ENGINEERS
C6.0 NTS INC., DATED 12/10/21, AND
TRANSFERRED TO THE REPRODUCIBLE
DRAWINGS BY THE ENGINEER.
SURVEYED: SCALE:
VERTICAL
HORIZONTAL, NAVD CITY O F
IZONTAL• NAD 1983/183/1991
DESIGNED: HS U
DRAWN: HS RENTON
ONE INCH DATU M
CHECKED: PA AT FULL SCALE Planning/Building/Public Works Dept.
IF NOT ONE INCH
BY DATE APPR APPROVED: SCALE ACCORDINGLY
:45 AN
T MIN.
"OVERFLOW
12" DEPTH T -4" ROCK DEPTH
OUTFLOW CHANNEL IF
24' MIN. SETTLING DEPTH CONSTRUCTED BY
G EXCAVATION
r F MAX.
3.5' - 5' -
FILTER FABRIC FENCING
1.5' MIN. SEDIMENT STORAGE 12" DEPTH 114' -1 IQ"
WASHED GRAVEL
OVERFLOW SPILLWAY V MIN. WIDTH
18- SEDIMENT STORAGE
24" SETTLING DEPTH 8 12"DEPTH OF 2"-4' ROCK, 12" DEPTH OF 314"-1 112" WASHED GRAVEL.
NOTES-
1. MAYBE CONSTRUCTED BY EXCAVATION OR BY BUILDING A BERM
STD. PLAN - 211.00
o PUBLIC WORKS PPR FDi
DEPARTMENT SEDIMENT TRAP GAZ 9/28/2018
DATE
:45 AN
DIMENT TRAP R-412715 z
IN COMPLIANCE WITH CITY OF RENTON STANDARDS w
SUNSET OAKS APARTMENTS
SUNSET LANE NE, RENTON, WA
CITY OF RENTON CML DETAILS
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DATE:
10/5/20
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U)
SHEET: OF,
15 36