HomeMy WebLinkAboutR-427534O
O
W
W
V
Q
Z
L
M
v
FOR EDGE TREATMENT OPTIONS,
SEE STD. PLAN 262.20
SEE STD.
PLAN TOP OF BANK
262.20 r ROADWAY OR ELEVATION
PARKING LOT 2
-1 1 I11 ;
2.5 MIN.,
TRANSITION ZONE SOIL, //\//,"•,'�',•� - „'.�,--;;
SEE STD. PLAN 262.20 �'/\\j/\� ,',iit"••yr."'c p,
2"4' DEPTH ARBORIST
DESIGNER TO SPECIFY WATER STORAGE ELEVATION
II 1
OVERFLOW STRUCTURE PER STD. PLAN
262.40 UNLESS SPECIFIED OTHERWISE
SIDEWALK, LANDSCAPING,
BOTTOM WIDTH
WAY
DRIVE, OR PAVEMENT
MIN. 18"
SIDE SLOPE AT TREE, SEE NOTE 9
2"-12" PONDING
6" MIN.
FREEBOARD
SEE STD.
PLAN
DEPTH
262,20
_
1.5
1�
I -III -III III-'.
•: II IIIIII-IIIII I
,
WOOD CHIP MULCH,=�'•�c• -'< s_';,:; 'i '? .?':"=' ANGLE OF REPOSE
SEE NOTE? `�•_ '•Y��='i.. <''��.%1'. *,
BIORETENTION SOIL MIX (BSM),
r� 1 12" MI SEE NOTE 5
\` UNDERDRAIN AGGREGATE,
SEE NOTE 6
OVERFLOW TO STORM MAIN
LOW PERMEABILITY LINER \\// SCARIFIED AND UNCOMPACTED SUBGRADE,
\/\ /�\ SEE NOTES 1 AND 2
WHEN REQUIRED, SEE NOTE 3
UNDERDRAIN, SEE NOTE 4
NOTES: GRAVEL BASE, SEE STD. PLAN 262.40
1. AVOID COMPACTION OF EXISTING SUBGRADE BELOW BASIN.
2. SCARIFY SUBGRADE TO A DEPTH OF 3 INCHES MINIMUM IMMEDIATELY PRIOR TO PLACEMENT OF BIORETENTION SOIL MIX AND UNDERDRAIN AGGREGATE,
EXCEPT WHEN LINER IS REQUIRED.
3. LINER TO BE INSTALLED ONLY WHEN REQUIRED IN THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON SWDM). LOW PERMEABILITY LINER TO
BE 30 MIL MIN. GEOMEMBRANE LINER OR 12 INCHES MIN. (DRY) CLAY LINER. CLAY LINER TO BE COMPACTED TO 95% MINIMUM DRY DENSITY (ASTM D698),
WITH AT LEAST 30 % CLAY PARTICLES PASSING (ASTM D422) AND AT LEAST 15 % PLASTICITY INDEX (ASTM D4318).
4. UNDERDRAIN TO BE 6" MIN. PRIVATE 8" MIN. PUBLIC SLOTTED PVC SDR 35 PER ASTM D3034. SLOTS SHOULD BE CUT PERPENDICULAR TO THE LONG AXIS
OF THE PIPE AND BE 0.04 TO 0.069 INCHES BY 1 INCH LONG AND BE SPACED 0.25 INCHES APART (SPACED LONGITUDINALLY). SLOTS SHOULD BE ARRANGED
IN FOUR ROWS SPACED ON 45-DEGREE CENTERS AND COVER 1/2 OF THE CIRCUMFERENCE OF THE PIPE. SLOPE PIPE AT 0.5% MIN UNLESS OTHERWISE
SPECIFIED. PROVIDE ONE CLEANOUT MIN. PER 100 FEET OF UNDERDRAIN AND AT EACH END. SEE STD. PLAN 226.00. MATCH CROWN ELEVATION OF
UNDERDRAIN TO OVERFLOW PIPE UNLESS OTHERWISE SPECIFIED.
5. 18" MIN. BIORETENTION SOIL MIX ON BOTTOM AND SIDES TO TOP OF PONDING AREA. BIORETENTION SOIL MIX TO MEET STD. PLAN 262.60.
6. UNDERDRAIN AGGREGATE TO MEET GRAVEL BACKFILL FOR DRAINS PER WSDOT STD. SPECIFICATION SECTION 9-03.12 4 .
7. ARBORIST WOOD CHIP MULCH TO MEET STD. PLAN 262.60.
8. MAXIMUM LONGITUDINAL SLOPE (ALONG DIRECTION OF FLOW) OF BIORETENTION SWALES SHALL BE 6 %.
9. WHERE NOT CONFLICTING WITH REQUIRED CLEARANCES OR UTILITIES, TREES MAY BE LOCATED IN BIORETENTION. REDUCE BOTTOM WIDTH TO 6 INCHES
MINIMUM AND INCREASE SIDE SLOPE TO 1.511:1V ADJACENT TO TREE. TREES TO BE LOCATED ONLY OUTSIDE OF LINER FOR LINED FACILITIES.
GENERAL NOTES:
1. MINIMUM UTILITY SETBACKS AND PROTECTION MEASURES MUST CONFORM TO CURRENT CITY STANDARDS, STD. PLANS 265.00, 265.10, AND 265.20, AND
OTHER UTILITY PROVIDER REQUIREMENTS. COORDINATE WITH CITY ENGINEER IN THE EVENT OF UTILITY CROSSINGS OR CONFLICTS.
2. BSM PLACEMENT, GRADING, AND CONSOLIDATION SHALL NOT OCCUR WHEN THE BSM IS EXCESSIVELY WET OR HAS BEEN SUBJECTED TO MORE THAN
1/2" OF PRECIPITATION WITHIN 48 HOURS PRIOR TO PLACEMENT. EXCESSIVELY WET IS DEFINED AS BEING AT OR ABOVE 22% SOIL MOISTURE BY A
GENERAL TOOLS AND INSTRUMENTS DSMM500 PRECISION DIGITAL SOIL MOISTURE METER WITH PROBE (OR EQUIVALENT). THERE SHOULD BE NO
VISIBLE FREE WATER IN THE MATERIAL. THE CONTRACTOR SHALL PLACE BSM LOOSELY WITH A CONVEYOR BELT OR WITH AN EXCAVATOR OR LOADER
FROM A HEIGHT NO HIGHER THAN 6 FEET, UNLESS OTHERWISE APPROVED BY THE ENGINEER (I.E., DO NOT DUMP MATERIAL DIRECTLY FROM TRUCK
INTO CELL). COMPACT BSM USING NON -MECHANICAL COMPACTION METHODS (E.G., BOOT PACKING, HAND TAMPING, OR WATER CONSOLIDATION) TO
83% (t 2%) OF THE MAXIMUM DRY DENSITY PER MODIFIED PROCTOR TEST (ASTM D1557), OR AS DIRECTED BY THE ENGINEER.
3. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
AomSTD. PLAN - 262.10
URI� UBLIC WORKS BIORETENTION SECTION PPR
DEPARTMENT (WITH UNDERDRAIN) Martin Pastucha 11/2/2
Public 609161FD98B449D... DATE
CAST IRON BEEHIVE GRATE
AND FRAME, SEE NOTE 1 -
OPTIONAL 6" OR 8" STREAMBED COBBLES,
PER WSDOT 9-03.11(2), SEE NOTE 2 _
1)Un(
SEE NOTE 3
I -III I --I I
VARIES, 5' MAX.���r
I T� 11'
SEE NOTE 4 (TYP_)
6" MIN. - I_
STORM DRAIN PIPE, J jAA' 12" MIN. SUMP
DESIGNER TO SPECIFY/�<.; o
6" MIN. -
6" MIN.
CATCH BASIN ADJUSTMENT SECTION AS
REQUIRED, DESIGNER TO SPECIFY ELEVATION
DESIGN PONDING
ELEVATION
-111-11 7/H,- UNDERDRAIN PIPE, IF REQUIRED,
�� SEE STD. PLAN 262.10
CATCH BASIN TYPE 1 PER
STD. PLAN 200.00 OR OTHER
STRUCTURE WITH APPROVAL
CONCRETE BASE
GRAVEL BACKFILL FOR DRAINS,
COMPACT PER WSDOT STD. SPEC. 9-03.12(4)
NOTES:
1. FRAME AND GRATE SHALL BE LOCKING AND GRATE SHALL BE BOLTED TO FRAME. FRAME SHALL CONFORM TO WSDOT STANDARD PLAN
B-30.10-03. GRATE TO BE DUCTILE IRON BEEHIVE GRATE FITTING 20"x24" FRAME. OLYMPIC FOUNDRY PART SM60BH OR EQUAL. SEE
STANDARD SPECIFICATIONS 9-05.15(2).
2. MINIMUM STREAMBED COBBLE DIAMETER SHALL BE LARGER THAN MAXIMUM GRATE OPENING.
3. ALL GRADE RINGS AND CASTINGS SHALL BE SET IN MORTAR IN ACCORDANCE WITH STANDARD SPECIFICATION 9-04.3. THEN APPLY
MORTAR TO INSIDE AND OUTSIDE OF ALL JOINTS, RINGS, RISERS, AND FRAMES.
4. WHEN CONNECTING TO A NEW PIPE, USE A FLEXIBLE CONNECTOR (KOR-NSEAL BOOT WITH CORRUGATED PIPE ADAPTER OR APPROVED
EQUAL). WHEN CONNECTING TO AN EXISTING PIPE, USE A FABRICATED SAND COLLAR OF THE SAME MATERIAL AS THE CONNECTING PIPE.
GENERAL NOTES:
1. PLANT SPACING WITHIN FACILITY TO ALLOW MAINTENANCE ACCESS TO STRUCTURE.
2. 12-INCH MIN. CLEARANCE WITHIN OVERFLOW STRUCTURE SHALL BE PROVIDED FOR MAINTENANCE ACCESS.
3. OVERFLOW PIPES MUST BE LOCATED AT AN ELEVATION HIGHER THAN THE STORM DRAIN HYDRAULIC GRADE LINE TO PREVENT BACKFLOW
INTO THE BIORETENTION FACILITY.
4. OVERFLOW STRUCTURE SHALL BE LOCATED WITHIN 10 FEET OF ROAD EDGE FOR MAINTENANCE ACCESS, UNLESS APPROVED OTHERWISE.
OVERFLOW STRUCTURE MAY BE LOCATED IN SIDE SLOPES.
5. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (t`
STD. PLAN - 262.40
�• PUBLIC WORKS BIORETENTION -OVERFLOW OUTLET
DEPARTMENT STRUCTURE Martin Pastucha 11/2
vbu®i,'Adm Q98B449D_. DATE
20
SEE NOTE 1 TOP OF BANK
ELEVATION
CONCRETE CURB, SEE STD. PLAN 101 6" MIN.
1" FREEBOARD
ROADWAY OR 2 yl
PARKING LOT Z T AA TOP OF PONDING
o //I
0
TRANSITION ZONE SOIL, SEE NOTES 3 AND 4
+ ff .ram" ..'- - �'•
2"-4" DEPTH ARBORIST WOOD CHIP MULCH, SEE STD. PLAN 262.60 7 •" z:ti ; iA_;:
BIORETENTION SOIL MIX, SEE NOTE 5
BIORETENTION ADJACENT TO CURB
SEE NOTE 2
SIDEWALK, LANDSCAPING,
6" MIN. 1" DRIVEWAY, OR PAVEMENT
FREEBOARD 2%
TOP OF PONDING - _T
TRANSITION ZONE SOIL, SEE NOTES 3 AND 4
••-
+�'�
2"-4" DEPTH ARBORIST WOOD CHIP MULCH, SEE STD. PLAN 262.60
Sv' BIORETENTION SOIL MIX, SEE NOTE 5
BIORETENTION ADJACENT TO SIDEWALK, LANDSCAPING,
DRIVEWAY OR PAVEMENT WITH FLUSH CURB OR NO CURB
NOTES: '
1. THE FOLLOWING MINIMUM SETBACKS SHALL BE PROVIDED FOR FACILITIES WITH SLOPED SIDES ADJACENT TO CURB:
1.1. 4-FOOT MIN. FROM FACE OF CURB TO TOP OF SLOPE ADJACENT TO MAJOR ARTERIAL STREET.
1.2. 2-FOOT MIN. FROM FACE OF CURB TO TOP OF SLOPE ADJACENT TO MINOR ARTERIAL AND COLLECTOR ARTERIAL STREET.
1.3. 1-FOOT MIN. FROM FACE OF CURB TO TOP OF SLOPE ADJACENT TO NON -ARTERIAL STREET OR PARKING LOT WITH NON -FLUSH CURB.
2. THE FOLLOWING MINIMUM SETBACKS SHALL BE PROVIDED FOR FACILITIES WITH SLOPED SIDES ADJACENT TO FLUSH CURB OR NO CURB:
2.1. 2-FOOT MIN. FROM EDGE OF DRIVEWAY OR PAVEMENT TO TOP OF SLOPE ADJACENT TO DRIVEWAY OR PAVEMENT.
2.2. 1-FOOT MIN. FROM EDGE OF SIDEWALK OR LANDSCAPING TO TOP OF SLOPE ADJACENT TO SIDEWALK OR LANDSCAPING.
3. COMPACT TRANSITION ZONE SOIL IMMEDIATELY BEHIND CURB TO 90 % MAX. STANDARD PROCTOR DENSITY (ASTM D698).
4. TRANSITION ZONE SOIL SHALL BE BIORETENTION SOIL MIX OR AMENDED SOIL PER GENERAL NOTE 1.
5. 18" MINIMUM BIORETENTION SOIL MIX PER STD. PLAN 262.60 TO TOP OF PON DING DEPTH.
GENERAL NOTES:
1. SOIL AMENDMENT: SCARIFY OR TILL SUBGRADE TO 3-INCH DEPTH. PLACE 3-INCHES OF TOPSOIL ON SURFACE AND TILL INTO 5-INCHES OF
SITE SOIL. SCARIFICATION DOES NOT APPLY TO LINED FACILITIES. TOPSOIL SHALL HAVE A MINIMUM ORGANIC MATTER CONTENT OF 10% DRY
WEIGHT IN PLANTING BEDS AND 5 % IN TURF AREAS, AND A pH FROM 6.0 TO 8.0 OR MATCHING THE pH OF THE ORIGINAL UNDISTURBED SOIL.
2. SEE STD. PLAN 262.30 FOR CURB CUTS.
3. FOR FACILITIES WITH LINERS, PROVIDE LINER ANCHOR PER WSDOT SPECIFICATIONS 8-29.3(2).
4. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 262.20
PUBLIC WORKS RPBcRfb4€Redby:
DEPARTMENT BIORETENTION -EDGE TREATMENTS 8/13/2020
artin Pastucha
DATE
�988POMF6998B4N9D..
PLANTING ZONES,
T SEE BELOW
I I I I I I
O � 4) O 4)
2"4" DEPTH ARBOIRIST I I I I I
WOOD CHIP MULCH,
SEE STD. PLAN 262.60 BOTTOM WIDTH SIDE SLOPE AT
MIN. 18" TREE, SEE NOTE 1
ROADWAY �.. A
SIDEWALK OR LANDSCAPING
v 2"-12" PONDING J
-
'* DEPTH -
1 1=1I 1=1II-1 I I1=1 I T y
1 III-1 i \
/G ! 71
T.
TRANSITION ZONE SOIL,;'•'q,,., _ ''•<�,L:,, v ,.•, -
SEE STD. PLAN 262.20 '')., 4 r6" MIN. t • A
\/ r.
BIORETENTION SOIL MIX,
SEE STD. PLAN 262.60
"v/�/'IV,- /Y/�' � \- SCARIFIED AND UNCOMPACTED SUBGRADE
NOTES:
1. WHERE NOT CONFLICTING WITH REQUIRED CLEARANCES OR UTILITIES, TREES MAYBE LOCATED IN BIORETENTION. REDUCE
BOTTOM WIDTH TO 6" MIN. AND INCREASE SIDE SLOPE TO 1.5HAV ADJACENT TO TREE. TREES TO BE LOCATED ONLY OUTSIDE OF
LINER FOR LINED FACILITIES.
GENERAL NOTES:
1. ALL PLANTS SHALL BE SELECTED WITH A MAXIMUM MATURE HEIGHT NOT GREATER THAN 30-INCHES ABOVE THE TOP OF THE
FACILITY, WITH THE EXCEPTION OF TREES AND ACCENT SHRUBS.
2. SEE STD. PLANS 262.00, 262.10, AND 262.20 FOR SECTION VIEWS OF BIORETENTION FACILITIES.
3. SEE THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON SWDM) TABLE C.2.6.A FOR A SELECTION OF
APPROVED WATER TOLERANT PLANTS. ADDITIONAL SPECIES ARE ALLOWED WITH CITY APPROVAL.
4. SELECT A MINIMUM OF 50% EVERGREEN PLANTS.
5. PLANTS ADJACENT TO STREET, DRIVEWAY, OR SIDEWALK SHALL BE SELECTED AND SPACED TO ALLOW ACCESS TO
VEHICLES AND NOT IMPEDE PEDESTRIANS.
6. PLANTS SHALL BE SPACED TO ENSURE CLEAR ACCESS AND UNIMPEDED FLOW FROM INLETS, OUTLETS, AND OVERFLOWS.
7. CONTINUE MULCH FOR A MINIMUM OF 2-FEET PAST THE TOP OF BANK ELEVATION OR INSTALL LANDSCAPE EDGING IF
FACILITY IS ADJACENT TO TURF.
B. PLANTING DESIGN SHOULD MINIMIZE COMPACTION OF BIORETENTION SOIL MIX THROUGH PLANNED MAINTENANCE ACCESS.
ANNUAL PLANTS REQUIRING SOIL DISTURBANCE FOR HARVESTING (E.G., CARROTS) OR ANNUAL REPLANTING ARE NOT
PERMITTED.
9. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
TABLE: PLANTING ZONES
ZONE
PLANT TYPE
LOCATION
EMERGENTS, PERENNIALS & LOW SHRUBS (PLANTS
O
THAT CAN TOLERATE STANDING WATER)
FACILITY BOTTOM
PERENNIALS & LOW SHRUBS (PLANTS
OEMERGENTS,
`Z
THAT CAN TOLERATE OCCASIONAL STANDING
LOWER SLOPE TO TOP OF PONDING
WATER)
OGROUNDCOVERS
/ SHRUBS
UPPER SLOPE / SIDEWALK GRADE
OOO
ACCENT SHRUB AAPPROPRIATE SHRUB
SIDEWALK GRADE / LOWER SLOPE / FACILITY BOTTOM
SED ON ZONE)
OTREE
UPPER SLOPE, SEE NOTE 1
UNLESS OTHERWISE NOTED, DRAWING IS NOTTO SCALE (NTS)
Aoft
STD. PLAN - 262.50
PRIPUBLIC WORKS BIORETENTION PLANTING - APPR ED:
DEPARTMENT SECTION VIEW GAZ 9/28/2018
Public Wort, Administrator DATE
UNDERGROUND LOCATOR SERVICE
CALL BEFORE YOU DIG!
811
MAT&H1 MATCH
GUTTER CURB
WIDTH WIDTH
' )
STREAMBED
6" COBBLES,
12"
MIN.
m a(
<
SEE NOTE 3
O
OOOOO�oO
O
O O
° • •
< 6"
18"-24"
DESIGNER
TAPER, (TYP.) •
•<
IT
TO SPECIFY.
SEE NOTE 2
. d d"
•
< MFLOW d
-�
oOfff����O�oO�O��Oo 12"
y"�^ j
I-) xv
A
d • ° dtl ••
<
oO �OOoO �OOO
T-6"
MIN.
Ol
d
6" MIN.
TAPER UTTER AT CURB CUT TO MATCH
GUTTER SLOPE UPSLOPE AND
DOWNSLOPE OF CURB CUT
PLAN
2" GUTTER DEPRESSION
AT FLOWLINE
GUTTER UPSLOPE AND TYPICAL SIDE SLOPE
DOWNSLOPE OF CURB CUT 2"-4" ARBORIST WOOD CHIP
SLOPE \ 2 5 MULCH, SEE STD. PLAN 262.60
J\ INFLOW 6" MIN. FREEBOARD \�1
ROADWAY ° \
d• a \
d
• 18"
a \
• 1" DROP TO COBBLES
D
• � 1
4" CRUSHED SURFACING ��/��/��/��/�\/��/�\/�\/� ' • I�; .,'"- 7'_,:1--� „,_J�> A`'ik,.-��,`_*•,�.f --.+U' • <_ _���., t�'
�4BIORETENJION FACILITY
COMPACT SOIL BELOW \ ..((gg , a <iA . ^f
C y
COBBLES, SEE NOT. \//�jj�jj�%j�j/\�j\ jj�-�;s",>�;��1 1�M?�G�Y ^�,� 1',-•'�','i•` 18" MIN.
NOTES: SECTION A UNCOMPACTED BIORETENTION SOIL
MIX (BSM), SEE STD. PLAN 262.60
1. SEE STD. PLAN 262.20 FOR EDGE TREATMENT OUTSIDE INLET AREA.
2. INLET CURB CUT WIDTH SHALL BE 24" ON GUTTER SLOPES >_ 5 % AND 18" ON GUTTER SLOPES < 5 %.
3. STREAMBED COBBLES SHALL BE 6" COBBLES PER WSDOT 9-03.11 2 . COBBLE PAD TO BE 8" THICK WITH 1:1 SIDE SLOPES TAPERING TO 12"
WIDE AT FACILITY BOTTOM.
4. COMPACT BIORETENTION SOIL MIX UNDER COBBLES TO 90 % MAX STANDARD PROCTOR DENSITY (ASTM D698).
GENERAL NOTES:
1. BOND NEW CURB AND GUTTER TO EXISTING CURB AND GUTTER WITH EPDXY AND DOWEL CONNECTION, IF RETROFITTING INTO EXISTING
CURBLINE. REFER TO STD. PLAN 101.10 FOR EXPANSION JOINT DETAIL.
2. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
UNLESS OTHERWISE NOTED, DRAWING IS NOTTO SCALE (NTS)
Aoft STD. PLAN - 262.30
• PUBLIC WORKS PPR D:
`�1NDEPARTMENT BIORETENTION -CURB CUT INLETS GAZ 9/2s/2ols 1
Public Wortz Adm iztr DATE
BIORETENTION SOIL MIX
BIORETENTION SOIL MIX (BSM) SHALL BE A WELL -BLENDED HOMOGENEOUS MIXTURE OF 60 TO 65 PERCENT BY VOLUME MINERAL
AGGREGATE FOR BIORETENTION SOIL AND 35 TO 40 PERCENT BY VOLUME COMPOST AS DETAILED IN THE TABLES BELOW.
MINERAL AGGREGATE FOR BIORETENTION SOIL
TABLE: MINERAL AGGREGATE GRADATION
SIEVE SIZE
PERCENT PASSING
3/8-INCH
100 PERCENT
U.S. NO.4
95 TO 100 PERCENT
U.S. NO. 10
75 TO 90 PERCENT
U.S. NO. 40
25 TO 40 PERCENT
U.S. NO. 100
4 TO 10 PERCENT
U.S. NO. 200
2 TO 4 PERCENT
MINERAL AGGREGATE FOR BIORETENTION SOIL MUST BE FREE OF WOOD,
WASTE, COATING, OR ANY OTHER DELETERIOUS MATERIAL, AND ALL
AGGREGATE PASSING THE NO. 200 SIEVE SIZE MUST BE NON -PLASTIC.
MINERAL AGGREGATE MUST BE ANALYZED BY AN ACCREDITED LAB USING
THE SIEVE SIZES NOTED IN THE TABLE TO THE LEFT, AND MUST MEET THE
REQUIRED GRADATIONS.
COMPOST
TABLE: COMPOST GRADATION
SIEVE SIZE
MIN. PERCENT PASSING
2-INCH
10O PERCENT
1-INCH
99 PERCENT
5/8-INCH
90 PERCENT
1/4-INCH
75 PERCENT
COMPOST MUST ORIGINATE A MINIMUM 65 PERCENT BY VOLUME FROM
RECYCLED PLANT WASTE COMPRISED OF YARD DEBRIS, CROP RESIDUES,
AND BULKING AGENTS, AND MEET THE DEFINITION OF "COMPOSTED
MATERIAL" IN WAC 173-350-100. COMPOST SHALL HAVE A MOISTURE CONTENT
THAT HAS NO VISIBLE FREE WATER OR DUST PRODUCED WHEN HANDLING
THE MATERIAL. COMPOST SHALL HAVE AN ORGANIC MATTER CONTENT OF 40
PERCENT TO 65 PERCENT BY DRY WEIGHT, A CARBON TO NITROGEN RATIO
BELOW 25:1, AND A pH BETWEEN 6.0 AND 8.0
ABORIST WOOD CHIP MULCH
TABLE: ARBORIST WOOD CHIP MULCH GRADATION
SIEVE SIZE
PERCENT PASSING
6-INCH
10O PERCENT
2-INCH
95 TO 100 PERCENT
1-INCH
70 TO 100 PERCENT
5/8-INCH
0 TO 50 PERCENT
U.S. NO.4
0 TO 30 PERCENT
ARBORIST WOOD CHIP MULCH SHALL BE COARSE GROUND WOOD
CHIPS (APPROXIMATELY 1/2" TO 6" ALONG THE LONGEST DIMENSION)
DERIVED FROM THE MECHANICAL GRINDING OR SHREDDING OF THE
ABOVE -GROUND PORTIONS OF TREES. IT MAY CONTAIN WOOD, WOOD
FIBER, BARK, BRANCHES, AND LEAVES, BUT MAY NOT CONTAIN
WEEDS, WEED SEEDS, OR VISIBLE AMOUNTS OF SOIL.
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)
STD. PLAN - 262.60
V'R]
PUBLIC WORKS BIORETENTION SOIL MIX, COMPOST ISRN4dby:
DEPARTMENT AND MULCH SPECIFICATIONS lartin Pastucha 8/13/20 (
8B81B1FD�98B449D.__ DATE
1 1ST SUBMITTAL CORRECTIONS DJL 9 23 25 SURVEYED: SCALE:
BY OTHERS VERTICAL NAVD 1988
83/1
2 2ND SUBMITTAL CORRECTIONS DJL 4 20 26 HORIZONTAL NAD 193/1991
DESIGNED:
3 95% CD'S DJL 5/15/26 DAN/EL ✓. LARSON, P.E.
4 3RD SUBMITTAL CORRECTIONS DJL 5/26/26 DRAWN:CHUCK FENCING ONE INCH DATUM
CHECKED: AT FULL SCALE
KA I L LANE, L T. SCALE NOT ONE INCH ACCORDINGLY
NO. REVISION BY DATE APPR APPROVED:
DAN/EL ✓. LARSON, P.E.
24"
L
2 1/2" DIA. HOLE
20" A
4�4dG�
O�O�O�O�O
TOP m
ISOMETRIC
I
� I
1/2" I
BOLT -DOWN SLOT, 3I4"
SEE DETAIL AND
NOTE 1 1 11/4"
5/8" I
I I
1
BOLT -DOWN SLOT DETAIL
SEE NOTE 1
�3.,1
r4 3/4" 1 1/2"
1 5/8l
R39", SEE NOTE 2
SECTION A
SECTION B
R26", SEE NOTE 2
'2"
5„
NOTES:
3 1/2"
r 3/4"
i 518"
1. BOLT -DOWN CAPABILITY IS REQUIRED ON ALL FRAMES,
GRATES, AND COVERS, UNLESS OTHERWISE SPECIFIED.
PROVIDE TWO HOLES IN THE FRAME THAT ARE
VERTICALLY ALIGNED WITH THE GRATE OR COVER SLOTS.
THE FRAME SHALL ACCEPT THE 5/8"-11 NC x 2" ALLEN
4"
I
HEAD CAP SCREW BY BEING TAPPED, OR OTHER
II _ 3/4" DIA. HOLE
APPROVED MECHANISM. LOCATION OF BOLT -DOWN HOLES
VARIES BY MANUFACTURER.
1 /2" DIA. HANDLE
2. ALTERNATIVE REINFORCING DESIGNS ARE ACCEPTABLE IN
LIEU OF THE RIB DESIGN.
SECTION C
3. REFER TO STANDARD SPECIFICATION 9-05.15(2) FOR
ADDITIONAL REQUIREMENTS.
4. FOR FRAME DETAILS, SEE CITY OF RENTON STANDARD
PLAN 204.00.
UNLESS OTHERWISE NOTED, DRAWING IS NOTTO SCALE (NTS)
STD. PLAN - 204.10
URI
•PUBLIC WORKS DEPARTMENT RECTANGULAR SOLID METAL COVER GAZ 9/28/2018 1
NMI,, Worts Ad---, DATE
% CITY OF
RENTON
Planning/Building/Public Works Dept.
O
O
O
O
I
N
N
J Lq
?�•oF•WAsyyso CIVIL ENGINEERING
�• P `' �� LANDSCAPE ARCHITECTURE
PLANNING
o�;o•,pF�o�as2�s�o•.�� DESIGN SURVEYING
Fss/ONAL ENG\ 12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877
5/26/26 R-4 2 7 53 4
IN COMPLIANCE WITH CITY OF RENTON STANDARDS \
DEVELOPMENT ENGINEERING Q
yqi 06/09/2026 1u�1
1�
LAJ
V
!(ENNYDALE GA TEWA Y DATE 5115126 Q
1310, 1321 & 1331 NE 43RD ST, RENTON, WA 98056 FIELDBOOK: O
PAGE
DRAWING NO:
C4.35 Z
STORM DRAINAGE DETAILS SHEET: 34 OF: 48