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HomeMy WebLinkAboutR-406218A PORTION OF SE 1/4, SE 1/4, SECTION 32, TOWNSHIP 23 N, RANGE 05 E, W.M., KING COUNTY, WA N O O It O I DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 LU Q n �I- LL 0 V) W 0 L L �/ \z W Q FOR EDGE TREATMENT OPTIONS, SEE STD. PLAN 262.20 ROADWAY/ PARKING LOT 6" MIN TOP OF BANK ELEVATION 2IS ' r l-III I I III -I � III-111 � I - I -I I 6' -12 N.I- 7RANSITION ZONE SOIL - SEE STD. PLAN 262.20 I T a'+ 2"4" DEPTH ARBORIST r �d EGNER,rTi�;` RECIFY WATER STORAGE ELEVATION OVERFLOW STRUCTURE PER STD. PLAN 262.40 UNLESS SPECIFIED OTHERWISE SIDEWALK OR LANDSCAPING , - BOTTOM WIDTH SIDE SLOPE AT TREE. SEE NOTE 9 MIN. 18' 6" MIN. 6' MIN. T-12" PONDING FREEBOARD DEPTH 5-T�1 'r I I 1111=1 11_ MIN - - - �.S WOOD CHIP MULCH. - ANGLE OF REPOSE SEE NOTE 7< -� } s-. BIORETENTION SOIL MIX (BSM);. I 12^M`N SEE NOTE 5 UNDERDRAIN AGGREGATE.. 11 SEE NOTE 6 OVERFLOW TO STORM MAIN SCARIFIED AND UNCOMPACTED SUBGRADO LOW PERMEABILITY LINER SEE NOTES 1 AND 2 WHEN REQUIRED, SEE NOTE 3 UNDERDRAIN, SEE NOTE NOTES. GRAVEL SEESTD. 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 0698). WITH AT LEAST 30% CLAY PARTICLES PASSING (ASTM D422) AND AT LEAST 15% PLASTICITY INDEX (ASTM D4318). 4, UN ER RAIN TO B 6" MIN. PRIVAT 8' MIN. (PUBLIC) SLOTTED PVC PER ASTM D1785 CH 4 . SLOTS SHOULD BE CUT PERPENDICULAR TO THE LONG AXIS 0 D E ( E). ( B ) O E S 0 E 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 112 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. gq 18' MIN, BIORETENTION SOIL MIX ON BOTTOM AND SIDES TO TOP OF PONDING AREA. BIORETENTION SOIL MIX TO MEET STD. PLAN 262.60. So UNDERDRAIN AGGREGATE TO MEET STD. PLAN 262.60. 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 61NCHES MINIMUM ANR,INCREASE SIDE SLOPE I TO 1:5E1: ADJ{10ENT TA TREES TREES TO BE;LOCA:fEDEC NLY OL7SIDE; OF �tINEEikFOlINEDF¢CILl,TIES. GENERAL NOTES: ,1 MINIMUM UTILITY SEIBACKS'ANOPRCIT@CTIOIJ MEASURES NI'IUSTCONFOI:C[1RRENT DITY STANDARDS;'STp`PLAN�S26&*ti S516;'AN62'65.26, AN& OTHER UTILITY PROVIDER REQUIREMENTS. COORDINATE WITH CITY ENGINEER IN THE EVENT OF UTILITY CROSSINGS OR CONFLICTS. 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 CELLI. COMPACT BSM USING NON -MECHANICAL COMPACTION METHODS (E.G., BOOT PACKING, HAND TAMPING, OR WATER CONSOLIDATION) TO 83% (2 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) STD. PLAN - 262.10 .♦. �. PUBLIC WORKS BIORETENTION SECTION PPR ' D .R. DEPARTMENT (WITH UNDERDRAIN) GAZ 9/28/2018 1 wn-iawo,kt4emwvno, DATE DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 UNDERDRAIN AGGREGATE TABLE: UNDERDRAIN AGGREGATE GRADATION SIEVE SIZE PERCENT PASSING 3/4-INCH 10O PERCENT 1I4-INCH 30 TO 60 PERCENT U.S. NO. 8 20 TO 50 PERCENT U.S. NO. 50 3 TO 12 PERCENT U S. NO 200 0 0 1 T PERCENT ERCE UNDERDRAIN AGGREGATE MUST CONSIST OF SCREENED SAND. GRAVEL OR OTHER INERT MATERIALS OR COMBINATIONS THEREOF FROM SOURCES APPROVED BY THE ENGINEER HAVING HARD DURABLE PARTICLES FREE FROM ADHERENT COATINGS. THE MATERIALS MUST BE WASHED THOROUGHLY TO REMOVE CLAY, LOAM, ALKALI. ORGANIC MATTER, OR OTHER DELETERIOUS SUBSTANCES. PARTICLES HAVING A SPECIFIC GRAVITY LESS THAN 1.95 MUST NOT EXCEED 1.0 PERCENT OF THE TOTAL WEIGHT. ORGANIC MATTER, BY CALORIMETRIC TEST. MUST NOT BE DARKER THAN THE REFERENCE STANDARD COLOR (ORGANIC PLATE NO. 3) AASHTO T21 UNLESS OTHER TESTS PROVE A DARKER COLOR TO BE HARMLESS. BIORETENTION SOIL MIX BIORETENTION SOIL MIX (BSM) SHALL BE A WELL -BLENDED HOMOGENEOUS MIXTURE OF 60 TO 65 PERCENT BY VOLUME MINERAL AGGREGATE FOR SOIL AND 35 TO 40 PERCENT BY VOLUME COMPOST AS DETAILED IN THE TABLES 8ELOW., MINERAL AGGREGATE FOR BIORETENTION SOIL BLS: MINERAL AGGREGATE GRADATION MINERAL AGGREGATE FOR BIORETENTION SOIL MUST BE FREE OF WOOD, WASTE, COATING, OR ANY OTHER DELETERIOUS MATERIAL. AND ALL SIEVE SIZE PERCENT PASSING 3/8-INCH 100 PERCENT U.S. NO4 95 TO 100 PERCENT 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, TA U.S. NO, 10 75 TO 90 PERCENT U.S. NO, 40 25 TO 40 PERCENT 100 4 TO 10 PERCENT U.S. NO. 200 2 TO 4 PERCENT COMPOST TABLE: COMPOST GRADATION SIEVE SIZE MIN. PERCENT PASSING 2-INCH 100 PERCENT 1-INCH 99 PERCENT 518-INCH 90 PERCENT 114-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 70 NITROGEN RATIOEL BOW 26:1. AND A pH BETWEEN 6.0 AND 8.0 ABORIST WOOD CHIP MULCH H GRADATION ARBORIST WOOD CHIP MULCH SHALL BE COARSE GROUND WOOD PASSING CHIPS (APPROXIMATELY 112" TO6"ALONG THE LONGEST DIMENSION) PERCENT DERIVED FROM THE MECHANICAL GRINDING OR SHREDDING OF THE ABOVE -GROUND PORTIONS OF TREES. IT MAY CONTAIN WOOD. WOOD 100 PERCENT FIBER. BARK, BRANCHES. AND LEAVES, BUT MAY NOT CONTAIN WEEDS, WEED SEEDS, OR VISIBLE AMOUNTS OF SOIL. TABLE: ARBORIST WOOD CHIP MULL SIEVE SIZE PERCENT 6-INCH 100 2-INCH 95 TO 1.INCH 70 TO 100 PERCENT 5/8-INCH 0 TO 50 PERCENT U.S. NO. 4 0 TO 30 PERCENT UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTSI UNDERDRAIN AGGREGATE, STD. PLAN-262.60 PUBLIC WORKS BIORETENTION SOIL MIX AND MULCH PRCI GAZ 9/28/2018 I DEPARTMENT SPECIFICATIONS �DL ATEI Know har below. Cal I befom you Ali :45 DocuSign Envelope ID: 6EECF586.602A-4E4A-B436-A317AA638878 6" MIN.. SEE - TOP OF BANK NOTE 1 ELEVATION 6" MIN, CONCRETE CURB, SEE STD. PLAN 101 1- FREEBOARD 2% STREET J T TOP OF FUNDING III-11 16. _I I , TRANSITION ZONE SOIL SEE NOTES 2 AND 3 2'4" DEPTH ARBORIST WOOD CHIP MULCH, SEE STD. PLAN 262.60 BIQRFTENTION SOIL MIX. SEE NOTE 4 E BIORETENTION ADJACENT TO CURB 6" MIN.. SEE NOTE 1 SIDEWALK, DRIVEWAY, OR 6' MIN 1" DRIVING SURFACE FREEBOARD 2% TOP OF FUNDING111 i=11-6II IIIIII'Illil TRANSITION ZONE SOIL SEE NOTES 2 AND 3 2"4' DEPTH ARBORIST WOOD CHIP MULCH, SEE STD. PLAN 262.60 BIORETENTION SOIL MIX. SEE NOTE 4 BIORETENTION ADJACENT TO SIDEWALK, DRIVEWAY, OR DRIVING SURFACE WITH FLUSH OR NO CURB NOTES: ?L SHOULDERILEVEL AREA WIDTH TO BE 6ANCH MIN. IN AREAS WITHOUT PARKING. PLANTINGS ADJACENT TO PARKING SHALL BE SELECTED AND SPACED TO ALLOW ACCESS TO VEHICLES. COMPACT TRANSITION ZONE SOIL IMMEDIATELY BEHIND CURB TO 90% MAX, STANDARD PROCTOR DENSITY (ASTM D698). iN TRANSITION ZONE SOIL SHALL BE SIORETENTION SOIL MIX OR AMENDED SOIL PER GENERAL NOTE 1. 4, 18' MINIMUM BIORETENTION SOIL MIX PER STD. PLAN 262.60 TO TOP OF PONDING 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. ..�, SEE STD. PLAN 262.30 FOR CURB CUTS FOR FACILITIES WITH LINERS, PROVIDE LIt2ERAN' CHTDI�P Rom° SW 00 3P -1 CA SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. 17NLSU OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 262.20 ♦R PUBLIC WORKS aPPROVIED. DEPARTMENT BIORETENTION - EDGE TREATMENTS GAZ 9/28/2018 1 Dnn DocuSign Envelope ID: 6EECF586.602A-4E4A-B436-A317AA638878 PLANTING BEDSWNDIS7URBED UNDISTURBED TURF (LAWN) AREAS. VEGETATION, SEE NOTE 1 SEE NOTE 1 UNDISTURBED GRASS SEED OR§CD NATIVE VEGETATION 0 X UNDISTURBED NATIVE SOIL \��\/%,le�% jib/ UNDISTURBED NATIVE SOIL - / / ; y / a_ PLANTING BEDS -4' ARBORIST WOOD CHIP MULCH, =8€E,STD PLAN 202.60 3" OF COMPOST INCORPORATED INTO 5' OF SITE SOIL (TOTAL AMENDED DEPTH OF 9.5-. FOR A SETTLED DEPTH OF B") TURF (LAWN) AREAS GRASS: SEED OR SOD 1.75" OF COMPOST INCORPORATED INTO 6.25' OF SITE SOIL (TOTAL AMENDED DEPTH OF 9,5'. FOR A SETTLED DEPTH OF 8") SUBSOIL 4" BELOW T - -1_, SUBSOIL SCARIFIED 4" BELOW SCAR 1 II COMPOST AMENDED LAVER COMPOST AMENDED LAYER -\' (12' BELOW SOIL SURFACE) FIT BELOW SOIL SURFACE) - OPTIONS 2, 3, AND 4 - AMEND IN PLACE OR STOCKPILE AND AMEND PLANTING BEDS TURF (LAWN) AREAS T-4" ARBORIST WOOD CHIP MULCH. SEE STD. PLAN 262.60 6'IMPORTED TOPSOIL MIX (COMPACTED DEPTH) SUBSOIL IS I. SCARIFIED 6" ^- BELOW IMPORTED = TOPSOIL MIX :45 �♦ PUBLIC WORKS "` DEPARTMENT 05/27/2020 12" OPTION 5 - IMPORTED TOPSOIL GRASS.,. SEED OR SOD NOTES: 1. AREAS OF NO DISTURBANCE TO BE FENCED AND EXISTING VEGETATION AND SOIL TO BE PROTECTED FROM CONSTRUCTION IMPACTS., 6" IMPORTED TOPSOIL MIX GENERAL NOTES: (COMPACTED DEPTH) 1 TO MEASURE SETTLED DEPTH, WATER SOIL, SUFFICIENTLY TO FULLY SATURATE WITHOLIf CAUSING EROSION SUBSOIL IS 2. COMPOST TO MEET STD. PLAN 262.60. SCARIFIED 6" BELOW IMPORTED 3. COMPACTION OF TOPSOIL (WHERE REQUIRED) TOPSOIL MIX TO BE TO 85% OF STANDARD PROCTOR. 4. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 264.00 APPR O. 45 DocuSign Envelope lD:6EECF586-602A-4E4A-6436-A317AA638878 MATCH MATCH I-- GUTTER CURB WIDTH WIDTH • STREAMBED 6" COBBLES, IT MIN. y SEE NOTE 3 a O °•• 6. ,( 78"-24"" '.TAPER TVP.) DESIGNER F3 oO�QOOo�o�O 12' TO SPECIFY, SEE NOTE 2 ' FLOW ° A • ,..-,• 00000a000 °° O 0�00000 -U O 3'.6" MIN, l I lQ) 6" MIN." TAPER GUTTER AT CURB CUT TO MATCH GUTTER SLOPE UPSLOPE AND DOWNSLOPE OF CURB CUT PLAN SPLASH APRON ?"GUTTER DEPRESSION AT FLOWLINE GUTTER UPSLOPE AND TYPICAL SIDE SLOPE DOWNSLOPE OF CURB CUT _ -�- 2"4' ARBORIST WOOD CHIP SLOPE \ \ 25 MULCH, SEE STD. PLAN 262.60 -_� INFLOW Q 11M FR.EE�CTA_R_D, �-1117 ROADWAY 8" 18" 1" DROP TO COBBLES O 4' CRUSHED SURFACING " ,H'rt .1; A41DI,<F- TOPCOURSE Tdst-.�,3',`..�rT;� _ BIORETENTION FACILITv,jd '.. Y A M T I W \ <9qr �� CO PAC SO L BELOW L' ,t COBBLES. SEE NOTE 4 � /�.. � ��� - .• `� f' ��-�f-'(� - -� �i -� �S - �Y T� t NOTES: SECTION A UNCOMPACTED BIORETENTION SOIL MIX (ISM), 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 2 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 17" WIDE AT FACILITY BOTTOM. 4. COMPACT BIORETENTION SOIL MIX UNDER COBBLES T090% MAX STANDARD PROCTOR DENSITY (ASTM DI 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 NOT TO SCALE (NTSj STD. PLAN - 262.30 �� 1♦�. PUBLIC WORKS BIORETENTION - CURB CUT INLETS FPR D 9/z8/zo18 I , DEPARTMENT GAZ Dnn SOIL AMENDMENT SECTIONS GAZ 9/28/2018 I :45 AN IDATC, PLO ENGINEERING Surveyors & Civil Engineers P.O. Box 412 Ravensdale, WA 98051 (206) 420-7130 www.PlogEngineering.com DocuSign Envelope ID: 6EECF586-602A-4E4A-B436-A317AA638878 :45 DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878 CAST IRON BEEHIVE GRATE AND FRAME, SEE NOTE 1 CATCH BASIN ADJUSTMENT SECTION AS REQUIRED, DESIGNER TO SPECIFY ELEVATION OPTIONAL 6" OR 8" STREAMBED COBBLER'S PER WSDOT 9-03.11(2), SEE NOTE 2,,'�S // DESIGN PONDING '\ / ELEVATION SEE NOTE 3 VARIES. 5' MAX. UNDERDRAIN PIPE, IF REQUIRED, SEE NOTE 4 fTYP.) SEE STD. PLAN 262.10 6" MIN. IIIIIIIIIIIIIIIIIIIII CATCH BASIN TYPE 1 PER STD. PLAN 200.00 OR OTHER STRUCTURE WITH APPROVAL STORM DRAIN PIPE. / DESIGNER TO SPECIFY J 12' MIN. SUMP SE vCONCRETES 111N-_ 5" MIN. GRAVEL BACKFILL FOR DRAINS, COMPACT PER WSDOT STD. SPEC. 9-03.12 4 11 NOTES: 4 8... FRAME AND GRATE SHALL BE LOCKING AND GRATE SHALL BE BOLTED TO FRAME. FRAME SHALL CONFORM TO WSDOT STANDARD PLAN 8-30.10-01. GRATE TO BE DUCTILE IRON BEEHIVE GRATE FITTING 20"x24" FRAME. OLYMPIC FOUNDRY PART SM60BH OR EQUAL. SEE STANDARD SPECIFICATIONS 9-05.15(2). MINIMUM STREAMBED COBBLE DIAMETER SHALL BE LARGER THAN MAXIMUM GRATE OPENING. SL 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. WHEN CONNECTING TO ANEW PIPE, USE A FLEXIBLE CONNECTOR (KOR-N-SEAL 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, .� 12-INCH MIN. CLEARANCE WITHIN OVERFLOW STRUCTURE SHALL BE PROVIDED FOR MAINTENANCE ACCESS. Be. OVERFLOW PIPES MUST BE LOCATED AT AN ELEVATION HIGHER THAN THE STORM DRAIN HYDRAULIC GRADE LINE TO PREVENT BACKFLOW INTO THE BIORETENTION FACILITY. 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. 15, SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NTS) STD. PLAN - 262.40 ♦ PUBLIC WORKS BIORETENTION - OVERFLOW OUTLET APPR ED. DEPARTMENT GAZ 9/28/2018 STRUCTURE DATE F_ TT_ II _j I I 1' MIN. CURB CUT 70 CATCH BASIN EDGE OF CATCH BASIN II _ dla - ` 'A rto 1 G3 $ W le C, a - � � _ 1. +, ,SR Cr7 fxl 9J Cs, -7 Fl c1 _, , �+2 li RF IRS"� I I \ - A.B,C UTILITY MAIN )' �- m7 O S:I 4 S d �3 ❑ 65,1 I I CROSSING -:ice '�� / I- I '6' W >B •- 'C-3 � ® 8 S:' � 4 ® © tea' E' �- -------- -------F__ .�- • UTILITY SERVICE I I . '.;^ r� r� P} �{y © CROSSING * M fl 'Gl © �! E*7 INE3Je E+7 e © �. rA s sa e c B --K W IN Q tiA W fl W W o Q W I I , 7 FA 1, 4 1 W W r� © m 10 9 W ©� / d8 Wfl Efl 'N'W W Q7 S]+ Q * El i<J :z ' .. -�`J .. -��W €J Q ,E7 C �` '1,��� . ® . . . . . Pti44i�® c --1��� 6} 14 BIORETENTION FACILITY I{^II I� J C� A Pill Czl 3,* 24 OPTIONAL UTILITY TRENCH DAM (TYP.). DES GNER TO SPECIFY GENERAL NOTES: 1. ABANDONED UTILITIES WITHIN FOOTPRINT OF FACILITY AND OBSERVED DURING CONSTRUCTION MUST BE REMOVED. COORDINATE WITH MUNICIPAL OR PRIVATE OWNER AND ENGINEER. 2, HORIZONTAL SEPARATION BETWEEN WATER MAIN WALL AND TOP OF SLOPE OF THE BIORETENTION FACILITY SHALL BE NO LESS THAN 7 FEET. 3. FIRE HYDRANTS SHALL BE A7 LEAST 5 FEET FROM BIORETENTION FACILITY FOOTPRINT. 4. WATER METER SHALL BE LOCATED OUTSIDE BIORETENTION FACILITY FOOTPRINT. 5. MANHOLES SHALL BE LOCATED OUTSIDE BIORETENTION FACILITY FOOTPRINT. 6, A MINIMUM OF 1 FOOT SEPARATION BETWEEN SANITARY SEWER CROSSINGS AND UNDERDRAINS SHALL BEMMINTAINED. 7. UTILITY SERVICE AND UTILITY MAIN CROSSINGS SHALL BE MADE PERPENDICULAR TO TILE BIORETENTION FACILITY. 8. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 265.00 PUBLIC WORKS APPROVED _• UTILITY CROSSINGS BIORETENTION GAZ 9/28/2018 I CIS DEPARTMENT DATE 45 AN DocuSign Envelope ID: 6EECF586-602A-4E4A-B436-A317AA638878 :45 PLANTING ZONES,,'e T SEE BELOW I I I I 2--4- DEPTH ARBOIRIST II I I I WOOD CHIP MULCH. SEE STD. PLAN 262.60 BOTTOM WIDTH SIDE SLOPE AT MIN. 18" TREE. SEE NOTE 1 ROADWAY SIDEWALK OR LANDSCAPING -� 2"-12" PONDING - - DEPTH �IIHI-IHI / IIHII II I 111-11 �I I .1 TRANSITION ZONE SOIL. ,* SEE STD. PLAN 262.20 - 6 MIN •�.---. 5 - �: IN SIORETENTION SOIL MIX. SEE STD. PLAN 262.60 ;_ 1v-. - - • r SCARIFIED AND UNCOMPACTED SUBGRADE NOTES: 1. WHERE NOT CONFLICTING WITH REQUIRED CLEARANCES OR UTILITIES. TREES MAY BE LOCATED IN BIORETENTION. REDUCE BOTTOM WIDTH TO 6" MIN. AND INCREASE SIDE SLOPE TO 1.5H, 1V 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. 8. PLANTING DESIGN SHOULD MINIMIZE COMPACTION OF BIORETENTION SOIL MIX THROUGH PLANNED MAINTENANCE ACCESS. ANNUAL PLANTS REQUIRING SOIL DISTURBANCE FOR HARVESTING CARROTS OR ANNUAL REPLANTING ARE NOT PERMITTED- (E.G.( ) 9, SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS, TABLE: PLANTING ZONES ZONE PLANT TYPE LOCATION _ O EMERGENTS, PERENNIALS B LOW SHRUBS (PEA NIS FACILITY BOTTOM THAT CAN TOLERATE STANDING WATER) EMERGENTS, PERENNIALS B LOW SHRUBS (PLANTS 2) THAT CAN TOLERATE OCCASIONAL STANDING P LOWER SLOPE TO TOP OF FUNDING WATER) OGROUNDCOVERSISHRUBS UPPER SLOPE I SIDEWALK GRADE OOO ACCENT SHRUB (SELECT APPROPRIATE SHRUB SIDEWALK GRADE! LOWER SLOPE !FACILITY BOTTOM BASED ON ZONE) OTREE UPPER SLOPE, SEE NOTE 1 UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE I NTS) STD. PLAN - 262.50 ♦ : PUBLIC WORKS BIORETENTION PLANTING - APPR ED. DEPARTMENT GAZ 9/28/2018 I SECTION VIEW DATE I � 30 MIL MIN_ gkoMEMBRANE -I LINER 1� r ^'._ 30 MIL MIN. GEOMEMBRANE 12' MIN LINER i DESIGNER TO SPECIFY f.f?"., - [- �= DESIGNER TO SPECIFY MIN. PIPE .,-, .rJr DESIGNER TO MIN. CLEARANCE , V "' �"�"' COVER AS REQUIRED SPECIFY MIN. PIPE �ARQUNDII,T" ----E„Fr NOTE 3 BY UTILITY PROVIDER, - .- COVER AS REQUIRED BY UTILITY PROVIDER, 30' MIN. VERIFY MIN. SEPARATION TO BOTTOM OF FACILITY. SEE NOTE 3� ` I '\ 30" MIN. EMBED LINER 3" MIN. /� INTO NATIVE SOIL NATIVE SOIL, SEE NOTE 2{ NATIVE SOIL, _ SEE NOTE 2� EXISTINGTFFILITY'SER C TO EXISTING UTILITY SERVICE 70 REMAIN IN PLACE, SEE NOTE 1 REMAIN IN PLACE, SEE NOTE 1 SECTION - SHALLOW UTILITY SERVICE SECTION - SHALLOW UTILITY SERVICE ���� UNDER BIORETENTION FACILITY / A ''Y WITHIN BIORETENTION FACILITY r SCALE NTS 65. J SCALE. NTS r, � ,.{ 1 DESIGNER TO SPECIFYH!LJ% MIN. CLEARANCE AROUND - e UTILITY. SEE NOTE 3 DESIGNER TO SPECIFY DESIGNER TO IRE COUTIRLITY yIZ" S PECIFY MIN. PIPE SMIN QUIRED COVER AS REQUIRED _--_ PROVIDER, 30"MIN- BY UTILITY PROVIDER, 30" MIN. 30 MIL IN, GEOMEMB, LINER `'��(` '�� UTILITY SERVICE PIPE CASING PER STD PLAN 412 JDi D C'INER 3' MIN. NATIVE SOIL. EXISTING UTILITY MAIN TO INTO NATIVE SOIL SEE NOTE 2 REMAIN IN PLACE SEE NOTE 1 SECTION - ENCASED UTILITY SERVICE SECTION - SHALLOW UTILITY MAIN WITHIN BIORETENTION FACILITY WITHIN BIORETENTION FACILITY D SCALE NTS 65.0 SCALE: NIS I< .. NOTES: 1. CONTRACTOR SHALL LOCATE AND DETERMINE DEPTH OF EXISTING UTILITY WITHIN THE FOOTPRINT OF THE BIORETENTION FACILITY WHILE LIMITING THE AMOUNT OF DISTURBANCE TO THE SOILIBACKFILLIMATERIAL OVER AND AROUND THE UTILITY PIPE. IF ELECTROMAGNETIC UTILITY LOCATING, POTHOLING. OR OTHER METHOD REVEALS THAT THE UTILITY PIPE DOES NOT MEET THE REQUIRED CLEARANCE FROM THE BOTTOM OF THE BIORETENTION FACILITY. THE UTILITY PROVIDER MAY REQUIRE IMPLEMENTATION OF PROTECTION MEASURES THAT EXCEED STANDARDS SHOWN PER THEIR OWN STANDARDS OR REQUIRE THE EXISTING UTILITY TO BE RELOCATED OUT OF THE SIORETENTION SECTION. EXISTING UTILITIES AND NATIVE SOIL AROUND EXISTING UTILITIES SHOULD REMAIN IN PLACE WHERE POSSIBLE. IF A PORTION OR ALL OF THE UTILITY IS UNCOVERED DURING EXCAVATION OR EXISTING SOIL WITHIN 1 FOOT OF THE KNOWN EXISTING UTILITY IS SCARIFIED, NATIVE SOIL OR APPROVED ENGINEERED BACKFILL SHALL BE CAREFULLY PLACED AND COMPACTED AROUND THE UTILITY PER THE UTILITY PROVIDER'S REQUIREMENTS- 3. PROVIDE THE MINIMUM CLEARANCE AROUND THE UTILITY SERVICE OR MAIN AND SETBACKS FROM STRUCTURAL ELEMENTS 0-E. CATCH BASINS, MANHOLES, VAULTS, ETC-) PER THE UTILITY PROVIDER'S REQUIREMENTS. GENERAL NOTES: 1. ANY DISCREPANCIES BETWEEN THE EXISTING UTILITIES SHOWN IN THE DESIGN DRAWINGS AND THE ACTUAL FIELD CONDITIONS SHOULD BE COMMUNICATED 70 THE ENGINEER IMMEDIATELY. 2. UTILITY MAINS SHALL NOT BE SUBJECT TO LOADING FROM NEW CURBSANALLS, LOAD BEARING LINES TO BE DETERMINED BY THE GEOTECHNICAL ENGINEER, 3. SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS. UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS) STD. PLAN - 265.10 ♦ PUBLIC WORKS PPR D: DEPARTMENT UTILITY CROSSINGS - BIORETENTION SECTIONS GAZ 9/28/2018 I DATE 1 READY FOR SUBMITTAL MXP 05/27/2020 MXP suRvevED: MXP SCALE. VERTICAL: NAVD 1988 HORIZONTAL: NAD 1983/1991 � 2 1ST REVIEW REVISIONS MXP 11/05/2019 MXP SEE GRAPHIC CITY O F DESIGNED: MXP 3 2ND REVIEW REVISIONS MXP 04/05/202 MXP DATUM Nklo RENTON Planning/Building/Public Works Dept. 4 3RD REVIEW REVISIONS MXP 05/27/2020 MXP DRAWN: CM ONE INC" CHECKED: MXP AT FULL SCALE IF NOT ONE INCH NO. REVISION BY DATE APPR SCALE ACCORDINGLY APPROVED: MXP 45 AM O O O IN L0 O CV O O O 00 r J �Z -45 AN � O O r a_ R - 406218 IN COMPLIANCE WITH CITY OF RENTON STANDARDS DEVELOPMENT ENGINEERING Nathan Janders 06/23/2020 Q SURFACE WATER UTILITY jfarah 06/24/2020 0 DATE. 05/27/2020 CIVIL PLAN SET /�ij HAEVIN RIDGE SHORT PLAT PAGDROOK RENTON, WA DRAWING NO.z 080-18 > w D R A I N A G E D E T A I L S SHEET: OF 18 23 2