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HomeMy WebLinkAboutRC 20181206000461Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-1 of 22 Record Date:12/6/2018 11:41 AM Electronically Recorded King County, WA W010101WI-M111 City Clerk's Office City of Renton 1055 S Grady Way Renton, WA 98057 DECLARATION OF COVENANT AND EASEMENT FOR INSPECTION AND MAINTENANCE OF DRAINAGE FACILITIESAND ON -SITE BMPS Grantor. RENTON SCHOOL DISTRICT Grantee: City of Renton Legal Description:SE 1/4 OF NE 1/4 LESS E 500 FT OF N 1121 FT LESS E 330 FT OF S 216.47 FT M/L LESS S 250 FT OF E 523 FT OF W 553 FT LESS CO RD Assessor's Tax Parcel ID#: 2823059004 IN CONSIDERATION of the approved City of Renton (check one of the following) U residential building permit, U commercial building permit, 0 clearing and grading permit, 0 subdivision permit, or U short subdivision permit for application file No. LUA/SWP C17-002606 relating to the real property ("Property") described above, the Grantor(s), the owner(s) in fee of that Property, hereby covenants(covenant) with the City of Renton, a golitical subdivision of the state of Washin on,. that the conditions and obligations set forth and-desc,ribed in Paragraphs I through 9 below with regard to the Property, and hereby grants(grant) an easement as described in Paragraphs 2 and 3. Grantor(s) hereby grants(grant), covenants(covenant), and agrees(agTee) as follows: 1. The Grantor(s) or his/her(their) successors in interest and assigns ("Owners ") shall at their own cost, operate, maintain, and keep in good repair, the Property's drainage facilities constructed as required in the approved construction plans and specifications-_.-._,,___ on file with the City of Renton and submitted to the City of Renton for the review and approval of permit(s) C17-002606 yv m wW The property's drainage facilities are shown and/or listed on Exhibit A. The property's drainage facilities shall be maintained in compliance with the operation and maintenance schedule included and attached herein as Exhibit B. Drainage facilities include pipes, channels, flow control facilities, water quality facilities, on site best management practices (BMPs) and other engineered structures designed to manage and/or treat, stormwater on the Property, On -site BmPs include dispersion and infiltration devices, bioretention, permeable pavements, rainwater harvesting systems, tree retention credit, reduced impervious surface footprint, vegetated roofs and other measures designed to mimic pre -developed hydrology and minimize stormwater runoff on the Property, 2. City of Renton shall have the right to ingress and egress over those portions of the Property necessary to perform inspections of the stonriwater facilities and BMPs and conduct maintenance activities specified in this Declaration of Covenant and in accordance with the Renton Municipal Code. City of Renton shall provide at least 30 days written notice to the Owners that entry on the Property is Page I of 3 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-2 of 22 Record Date:12/6/2018 11:41 AM King County, WA 8. This Declaration of Covenant is intended to protect the value and desirability and promote efficient and effective management of surface water drainage of the real property described above, and shall inure to the benefit of all the citizens of the City of Renton and its successors and assigns. This Page 2 of 3 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-3 of 22 Record Date:12/6/2018 11:41 AM King County, WA Declaration of Covenant shall run with the dared and be binding upon Grantor(s), and Grantor°s(s`) successors in interest, and assigns. 9. This Declaration of Covenant may be terminated by execution of a written agreement by the Owners and the City that is recorded by Ding County in its real property records. IN WITNESS WHERE -OF, t its Declaration of Covenant for the Inspection and Maintenance of Drainage Facilities is executed this,_M day of w _ 20IV... i�t _...�m ry �'F"(�fi, cawner of 6'R—A" e.._...p _..._... .. w_ �.. the Pro et GRANTOR, owner of the Property STATE OF WASHINGT'ON ) COTJNT'Y' OF KING )ss. On this day personally appeared before me: "kCot W i41 to me known to be the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed, for the uses and purposes therein stated. Given under my hand and official seal this w, - 'ay of _ 1e 20 till l'V19gV a�n,+lM �"� �� t�Q7�p��✓�� F ..m.e.A,.,.e..,....,.—..ae.d...�e.....,W.. ._.n.e..�..,......,�,.W n..w..w,n...�.......,..�....,,.,�.,..w.�.,.�.w......,...__...w.�..... ,....�. Printed name o�� X Notary Public in and for the State of Washington, residing at WA YW B�'t �W Myappointment expires_ ...a................m. ,. ,........,.....�._.. Page 3 of 3 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-4 of 22 Record Date:12/6/2018 11:41 AM King County, WA E z i Uj 0 C l 6Y]0 F= z Cfl 1J _ tl iz 0 h- L.L C) f 0 � X Lhl L.Uw. M x M _.. z w c � h $� w z � � 0 w LL . C P} LL PU) Nr LC U0 z a _CD "'* / 0' CD :Ik;y Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-5 of 22 Record Date:12/6/2018 11:41 AM King County, WA Ow-wations and ;Vlaintenance Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-6 of 22 Record Date:12/6/2018 11:41 AM King County, WA CITY OF REt TON SURFACE WATER DESIGN MANUAL This appendix contains the maintenance requiremeriLs for the following typical stormwater flow control and Water quality facilities and an -site B Ps (clillclich- the title tofbIlow the link) No. 3­ Detention Tanks and Vaults Basins and Manholes No. 6 — Conveyance Pipes and Ditches 2W 7 City of Reraon Surf4ee Water Des1gn tvlanual 1112�2016 A-1 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-7 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPENDIX A NIATNTE'NANCE REQtRREPv ENTS FOR STORMWATER FAC:ILInES .,4Y°~fLD ON -Sr m' } NIPS O. 3 --. DE7ENTION TANKS AN D VAULTS MAINTENANCE DEFECT OR CONDITIONS HEN RESULTS EXPECTED WHEN COMPONENT ONENT PROBLEM MAINTENANCE IS NEEDED MAINTENANCE IS PERFORMED Site Trash and debris Any trash and debris which exceed 1 Cubic Trash and debris cleared from site. fact per 1,000 square feet (this is about equal to the amount of trash it would take to fit up one standard size office garbage can). In general, there should be no visual evidence of dumping. Noxious weeds_._. Any'noxious or nuisance vegetation which Noxious and nuisance vegetahm'i removed may ronstitute a hazard to City personnel according to applicable regulations. Nra or the public, danger of noxious vegetatiasra w here City personnel or the public might nonnaily be. Contaminants and Any evidence of contaminants or pcailutlon Materials removed and disposed of pollution such as oil, gasoline, concrete slurries or according to applicable regulations. Source paint. ccntroa BMPs implemented if appropriate No contarriinants present other than a surface oil film. Excessive growth of Grass or groundcover exceeds 16 inches Grass or groundcover mowed to a height grass/groundcover in height, no greater than 0 inches, i ank or Jau k Trash grid debris Any trash and debris accumulated in vault Nov trash or debris In vault, Storage Area or tank (includes floatables and non- floatables). Sediment Accumulated sedia tent depth exceeds All sediment removed from storage area accumulation 10% of the diameter of the storage area for '/2 length of storage vault or any point depth exceeds 15% of diameter, Example: 72-Inch storage tank would require cleaning when sediment reaches depth of 7 inches for more than "d/ length of tank. Tank Structure Plugged air vent Any blockage of the vent. Tank or vault freely vents. Tank bent cut of Any part of tank/pipe is best out of shape Tank repaired or replaced to design, shape more than 10 of its design shape. Gaps between A gap wider than '/,inc,h at the, faint of any No water or sail entering tank through. sections, dartiaged tank sections or any evidence of snail joints or walls, joints or creeks or particles entering the tank at a point or tears in wall through a wall, Vault Structure Darnacge to wall„ Cracks wider than A -inch, arsy evidence of Vault is sealed and structurally wound. frarne, bottom, and/or soil entering the structure through Cracks top slab or qualified Inspection personnel determines trial the vault is not structurally sound. inlet/Outlet Pipes Sediment Sediment filling 20 am or more of the pipe. lntetioutlet pipes clear of sediment, accaauaau9;atiora Trash and debris Trash and debris accumulated in No trash or debris in pipes, initrUoutlst pipe's (includes firaatables and reran-floatables). Damaged inletfoutlet Cracks wider than Y2-inr„h at the faint of the No cracks rnore than P-inch wide at the pipes inlet/nubet pipes or any evidence of soil joint of the inot/oudet pipe. entering at the joints of the inietloutlet pipes. Access Manhole Cover/lid not in place Cover/lid Is missing or only partially In nhole access covered, place, Any open manhole requires immediate maintenance, 12=/1 ri2016 2017 City of'Rennin Surfrace Water Design Manual A-6 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-8 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPENDIXA MAINTENANCE REQUIREMENTS FOR STORN1WATE,,R FAClL1T1ESANf)ON-S1TF, BM r; ,DE7ENTION TANKS AND VAULTS MAINTENANCE DEFECT OR CONDITIONS WHEN RESULTS EXPECTED WHEN COMPONENTO: s MAINTENANCE IS PERFORMED Arcess hianho�o Locking mechanism Mechanism cannot be opened by one Mechanism opens with proper tools, (Cora,) not working maintenance personnith proper tools, Bo;ts cannot be seated Self-locking coverAid does not wok CoverPid difficult to One maintenance person cannot remove Coverflid can be removed and reinstaHed remove coverflidafter applying 80 lbs of lift. by one maintenance person, Ladder rungs unsafe Missing rungs, misalignment, rust, or Ladder meets design standards, Nlows cracks, maintenance person safe access, Large access Damaged or difficuit Large access doors or p�ates cannot be Replace or repair access door soft can doors/plate to open openedfremoved using normal squ�pment. opened as designed, Gaps, doesn't on er Large access doors not flat and/or access Doors close flat; covers access opening completely opening not completely covered, completely. Lifting rings missing, Lifting rings not capable of flfti­,g"-,.­eig Lifting rings sufficient to lift or remove dou&� rusted door or plate. or plate. ME 2017 City of Renton Surface Waaacr Design Nlaanmd 12f12(200 6 A-7 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-9 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPENDIX A MAINTENANCE REQUIREMENTS FOR STORM WATER FACILITIES AND ON- 1-FE BNIPS > I ; O. 4 - CONTROL STRUCTUREIFLOW, MAINTENANCE DEFECT" OR CONDITION WHEN MAINTENANCE RESULTS EXPECTED MIEN) COMPONENT PROBLEM _ IS NEEDED _ MAINTENANCE N CE IS PERFORMED Structure Trash and debris Trash or debris of more than l cubic foot No `trash or debris blocking or potentially which is located immediately in front of the blocking entrance to structure. structure opening or is blocking capacity of the structure by more than 10%. Trash or debris in the structure khat No trash or debris in the structure, exceeds aiu the depth frorn the bottern of basin to invert the lowest pipe into or out of the basin. Deposits of garbage exceeding 1 cubic No condition present which would attract or foot in volume. support the breeding of insects or rodents, Sediment Sediment exceeds 60% of the depth from Sump of stnamture contains no sedirnerst. accumulation the bottom of the structure to the invert of the lowest pipe into or out of the structure or the bottom of the FFROP-1" section or is within 6 inches of the Invert of the lowest pipe into or out of the structure or the bottom of the: FROP-T section. Darnage to frame Coarser of frame extends more than'! inclg Frame is even with curb. andfor top slab past curb face into the street (if applicable), Top slab has holes larger than 2 square Top slab is tree of holes and cracks, inches or cracks: wider than :a inch. Frame not sitting flush on top slats, t&, Frame is sitting flush on top slaps. _ separatice of more than % inch of the frarne from the top slab. Cracks in walls or Cracks wider than 1A inch and larger than Structure is sealed and structurally wound. bottom 3 feet, any evidence of soil particles entering structure through cracks, or mainCenance person judges that stmcluure is uresoaand. Cracks wider than'- inch and longer than No cracks more than V,a inch wide at the i foot at the joint of any inletloutlet pipe or joint of inlet/outlet pipe, any evidence of soil particles entering _ structure through cracks. SettlernenU Structure has settled more than 1 inch or Basin replaced or repaired to design _ misalignment has rotated more than 2 inches out of standards. e"8. lignmeriL Darnaged pipe joints Cracks wider than Yrinch at the joint of the No cracks more than 1,4-inch wide at the inlet/outlet pipes or any evidence at soul point of inletioutlet pipes, entering the structure at the joint of the inletfoutlet pipes. Contaminants and Any evidence of contaminants or polkitiors Materials removed and disposed of_... _ pollution such as oil, gasoline, concrete slurries or according to applicable regmatiruts Source paint, control BMPs impieonented if appropriate No contc"arnhiants present cl,her than a surface "it I'm, Ladder rungs missing Ladder is sensate due to missing rungs, Ladder meets design standards and a&tows or unsafe rnmalignment, rust, cracks, or sharp edges, rnainteruance person safe Kaccess,. P' ROP-T Section Damaged f=ROP-T T secton is not securely attached to T' section securely attached to wail and structure wall and outlet pipe structure outlet pipe, should support at least 1,O00 lbs of sup or down pressure. Structure is not in upright position (allow up 5trauciure in correct position, to 10% from plumb), 1 1t212016 2017 City of Renton Surface Water Design Manual A-• Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-10 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPENDIX A MAINTENANCE REQUIREMENTS FOR STOR14iWATER FAC;HATfES AND CihfaSITE; TiMPS ,NO. $ - CONTROL STRUCTUREFLOW RESTRICTOR MAINTENANCE DEFECT OR CONDITION WHEN MAINTENANCE RESULTS EXPECTED WHEN COMPONENT PROBLEM IS NEEDED _ MAINTENANCE IS PERFORMED FRCIP-T Section Damaged FROP-T� Connect c e are not Connections to outlet pipe Connections to outlet pipe are water tight; (cant) (cant.) watertight or show signs of deteriorated structure repaired or replaced and works grout. ...Any as designed. ._._.�.�....,._._ holes -- other holes ---in �_Stnac,�.__.__.._. other' than d s®--i Structure has no hales other than designed the structure. holes. Cleanout Gate_.. _. .__. q q Damaged or 9' � rraYss`sng.._ Cleanout ate is Replace�.......� µ _„ .., ciea'e*oaad pate. clleanout gate _ leanout gate is not watertight. gate is watertight and works as designed, Gate cannot be moved up and down by___,v._. Gate moves asp and down easily and is one maintenance person, N watertight, P Chalralrrad leading to gate is missing or Chain is in place and works as designed � .. damaged. _ 0 lice Piatra � Cra Damaged or missing ,vice is not.�..,�.. Control d� working property due p. as designed. , Plate is in Dice and works s orifice plate to missing, out of place, or bent, adflce plate. ..- . —f Obstructions to orificeH Any trash, debris, sediment, or vegetation y g date 9� free of �Yi obstructions and Yd"Jrk„ uc plate blacking the plate, as designed. overflow Pape Obstructions to Any trash or debris blocking (w having the Pipe is free of all obstructions and works overflow pipe potential of blocking) the overflow pipe. as designed. w_..v. ..._ Deformed or !lip of uverilow pipe is bent or deformed, allrflaw at Overflow pipe does not allow overflow damaged lap of an elevation lower than design _ N overflow pipe WetiOut9et. Pipe P' Sediment i. e..__ Sediment Ellin 20% or more of the g - pP lKeUoutlest pipes clear of sediment. Pp accurnulatlon Trash and debris Trash and debris .accumulated in _ No trash or debris in pipes. inieetlautlet pipes hriciudes firaataNes and non-floatables}. .... ..__ _ ....___t V Damaged inleVOLitlet Caent La .. Cracks wider than '/z-inch at the j f the s h_ th 67 cracks more than /a-Ynfi wide at the p�� pipe inleticautdet pipes or any evidence of scads joint of the iniebcutdet pipe. entering at the (taints of the irnletioutlet � pipes. IiNetalC"atat__._...._ a tea Uns afe nsafe � rate opening Grate with opening wider than 118 inch, Grate opening meets design standards. (af applicable)Trash and debris Trash and debris that is blocking more. Grate free of trash and debris. oebrdathan 20% of grate'surface. guidelines fear disposal Damaged car missin Crate missing or broken rnernber(s;) of the Grate is in place and meets grate grata. �._ standards. __.._____._..__._.__. _._w.....�_alEy ManhcaleCoveri'Ud Cctverlasdneatanplecw" Cov"erl-Nd is missing or cNy parf� 6n Craverilidpreatects opening tcplace. y open structure requires urgent maintenance, Locking mechanism Mechanism cannot be opened by one Mechanism opens with propnot working rnainteriance person with proper tools, Bolts cannot be seated. Celf.docking coverAid doors not wrark. CoveriPid difficult to Glaser maintenance person cannot removeovearAid can be removed an�d remove roverfild after applying 80 lbs. of lift. by one maintenance person, 2017 0ty of Renton Surface Water Design Manual 12E 12r20 (6 A-9 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-11 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPENNIX A MATNT'ENANCeE Ft,fwQIJIREMIENTS FOR STORM WATER FAC_"ILI IES AND ON -SITE E3iMPS O, 5 -- CATCH BASINSLEA Ik AINIENANC:E DEFECT OR CONDITION WHEN MAINTENANCE RESULTS EXPECTED WHEN CC7MPO-NEN°f PROBLEM._____.. IS NEEDED MAiNTEN ANC E IE PERFORMED SUucture Sediment Sediment exceeds 60% of the depth frorn Sump of catch basin contains no sediment accumulation the bottom of the catch basin to the invert of the lowest pipe into or out of the catch basin or is within 6 Inches of the invert of the lowest pipe into or out of the catch basin. Trash and debris Trish or debris of more than V. cubic toot No Trash or debris blocking or potentially which is located immediately in front of the blocking entrance to catch basin. catch basin opening or is blocking capacity of the catch basin by more than .l0%. _ _ I rash or debris in the catch basin that No trash or debris in the catch basin. exceeds'/. the depth from the bottom of basin to invert the lowest pope into or out of the basin. Dead ;animals or vegetation that could No dead animals or vegetation present generate odors that could cause within catch basin. complaints or dangerous gases (e.g., methane). Deposits of garbage exceeding 1 cubic Nocondition present which would attract or foot in volume, support the breeding of insects or rodents. Damage to frarne Corner of frame extends more than a"inch Frame is even with curb, and/or trap slab past ctub face into the street (If applicable). Top slate has holes larger tharr 2 square: Top slab is tree of holes and cracks. inches Or cracks vender than 'd inch. Frame not sitting flush on top slab, i.e., Frame is sitting flush on top slab. separation of more than'/° inch of the frame from the trap stab. Cracks in walls or Cracks wader than V2 inch and longer than Catch basin is sealed and is structurally bottom 3 feet, any evidence of serif particles; sound. entering catch basin through cracks, or rnainterrance person judges that catch basin is unsound. Cracks wider than '/7 inch and longer than No cracks more than'/a inch wide of the _ 1 foot at the joint of any inletioutlet pipe or joint of inlet/oudet pipe. any evidence of soil particles entering catch basin through cracks. Settlement? Catch basin has settled more than 1 inch Basin replaced or repaired to design misalignment or has rotated mare than 2 inches out of standards. alignment. Damaged pipe; joints Cracks wider than ''/z-inch at the joint of the No cracks more than 1/4-inch wide at the Inletfoutiet pipes or any evidence of soil joint of inleffout3at pipes, entering the catch basin at the joint of the inlet/otatlet pipes. Contaminants and Any evidence of contaminants or pollution Materials roved and disposed of pollution such as oil, gasoline, concrete slurries or according to applicable regulations. Source paint. control BMPs implemented if appropriate. Nc contaminants present rather than a surface oil film. Inlet/Outlet Pipe Sediment Sediment filling 20% or more ref the pipe. Inlet/outlet pipes clear of sediment_ _ accumulation Trash and debris /`rash and debris accumulated in No trash or debris in pipes. inletioutiet pipes f includes iieaataables and iron-floatabies). 1211212016 20l7 City ofRenton Surface Water Design Manual A-1 0 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-12 of 22 Record Date:12/6/2018 11:41 AM King County, WA -CA : , BASINS MAINTENANCE DEFECTOR ONDITION WHEN MAINTENANCE LICSINEEDED RESULTS EXPECTED WHEN COMPONENT PROBLEM MAINTENANCE IS PERFORMED (cant.) pipe Wet/outiet pipes or any evldenc� of Soil joint of the Inlet/outlet fi�pe. entering at the joints of the inletioutlet Metat Grates Unsafe grate opening Grate with opening wider than '/u inch " Grate opening meets design standards. (Catch Basins) Trash and debris Trash and debris that is blocking mor. Grate free of trash and debris. footnote to than 20% of grate surface. guidelines for disposal Damaged or missing Grate missing or broken rnember(s) of the Grate ls in place and meets design grate grate. Any open structure requires standards, urgent maintenance. Manhole Cover/Lid Coverflid not in place Cover1lid is missing or only partially in g 113 CoverAd protects opening to struCtUre. place, Any open structure requires LIVIIZIre urgent maintenance, Locking mechanism Mechanism cannot be opened by one Mechanism opens with proper tools, not wor�king maintenance person Ath proper tools. Bolts cannot be seated. Self-locking cover/fid does not work. Cover/lid difficult to One maintenance person cannot remove Coverilid can be rernoved and reinstalled remove coverti a ter applying 80 lbsof RL by one maintenance person, 2017 City orl enllcaaa Surfiace Water Design Manual 9 /122r 016 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-13 of 22 Record Date:12/6/2018 11:41 AM King County, WA API'IaNDIia A MAINTENANCE REQUIREMENrw FOR STORM WATER FACILITIES AND ON -SITE BM PS O. 6 PIPES AND DITCHES MAiNTENANCE DEFECT OR CONDITIONS WHEN RESULTS EXPECTED WHEN COMPONENT PROBLEM MAINTENANCE iS NEEDED MAKrENANCE IS PERFORMED Piper Sediment & debris Accumulated sediment or debris that water Rows freely through pipes. accumulation exceeds 20 %A of the diameter of the pipe. Vegetation/mot Ve etatiorVroots that reduce free water flows freely through pipes. growth in pipe movernent of water through pipes. Contaminants and Any evidence of conhuninants or pollution Materials mmoved and disposed of pollution such as ail, gasoline, concrete slurries or according to applicable regulations, Saasacce paint, control BMPs implemented if appropriate. No contaminants present rather than a surface oil fllrn. Carnage to protective Protective coating is damaged; rust car Pipe repaired or replaced. coating or corrosion corrosion is weakening the structural integrity of any part of pope, Damaged pipes Any dent that decreases the cross section Pipe repaired or replaced. area of pipe by more than 20% or is determined to have weakened structural integrity of the pipe. Ditches Trash and debris 'Trash and debris exceeds 1 cubic foot per Trash and debris cleared from ditches_.. 1,000 square feet of ditch and slopes. Sediment Accumulated sediment that exceeds 20°o riiicis cleaned/flushed of a91 sediment and accumulation of the design depth. debris so that it matches design. Noxious weed,___—_ Any noxious or nuisance vegetation which Noxious and nuisance vegetation removed may constitute a hazard to City personnel accosting to applicable regulations. No or the public. danger of noxious vegetation where City personnel or the public might normally be. Contaminants and Any evidence of contaminants or pollution Matenais removed and disposed of pollution such as oil, gasoline, concrete slurries or according to applicable regulations. Source paint. control BMPs implemented if appropriate. No contaminants present rather than a surface oil fibre. Excessive vegetation Vegetation that reduces free movement of Water flaws freely through ditches. growth water through ditches. Erasion clarnage to Any erasion observed on a ditch shape..__ Slopes are not eroding. slopes Rock lining out of One layer or less of rock exists above Replace rocks to design standards. place or missing (If native soil Brea 5 square feet or more, any applicable) exposed native soil. 12;1l212W 6 20I7 City of Roman Surface Water Design Manual A42 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-14 of 22 Record Date:12/6/2018 11:41 AM King County, WA APPEt DID A MAINTENANCE PEQI.I1REMENTS FOR STORMWATER FACILITIES AND ON -SITE. BMPS O. I I —GROUNDS (LANDSCAPING) MAINTENANCE DEFECT OR CONDITIONS WHEN RESULTS EXPECTED WHEN COMPONENT PROBLEM MAINTENANCE IS NEEDED MAINTENANCE IS PERFORMED .... _. Site Trash and debris An trash and debris which exceed 1 cubic y 'Crash and debris cleared from site.__ foot per 1,000 square feet (this is about equal to the amount of trash it wood d take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. o. - Noxaoaasuyeeds or nuisance Any noxious sance vegetation which Noxious and nuisance vegetatfan re..ved may constitute a hazard to City personnel according to applicable regulations. No or the public. danger of noxious vegetation where City personnei or the public might normally be Contaminants an;9 w. Any evidence of contaminants car csl8artirart Materials removed and disposedof di poilutior3 such as oil, gasoline, concrete slurries or according to applicable regulations. Source paint, control BMPs implemented if appropriate. No contaminants present rather than a surface rail film _.,_.,. Excessive growth of Crass or groundcover exceeds 18 inches Grass or gruundcover mooed to ,a height.. grass/groundco2ver In height. no greater than 5 inches. ..,and Shrubs Trees Hazard tree identified Any tree or limb of a tree identified as No hazard tree, in facilty, having a potential to fall and cause property damage or threaten human life. A hazard tree identified by a qualified arborist must be removed as soon as possible. Dwnaged tree or Limbs or parts of trees or shrubs that are Trees and shrubs with less than 5% of total shrub identified split or broken which affect more than 25% foliage with split or broken limbs. of the total foliage of the tree or shrub. .M.. .... Trees or shnabs that have been blrawrra ked over No blown down vegetationknocked ve et cn or kn c d over down or knocked over. vegetation, Trees or shrubs frees of in)uary. _ frees or shrubs which are not adequately Tree car shrub inWplace and adequately supported or are leaning over, causing supported; dead or diseased trees exposure of the roots, removed. 2017 City of R.emon Surface Water Dealgn ,Manual 1112a2016 A-1 7 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-15 of 22 Record Date:12/6/2018 11:41 AM King County, WA SystemsBloretent I ion Instrument Number: 20181206000461 Document:COV Rec: S219.00 Page-16 of 22 Record Date:12/6/2018 11:41 AM King County, WA Table of Contents Overview Fifterraa General Description Filterrca Schern atic Basic Operations Design Maintenance * Maintenance Overview y Maintain? a When to Maintain? Exclusion of Services * Maintenance Visit Summary * Maintenance Tools, Safety Equipment and Supplies w Maintenance Visit Procedure * Maintenance Checklist Resources * Example filterro Projeci Maintenance Report Sheet * Example Filterrca Structure Maintenance Report Sheet * Filterraa carrm)ty m Drawing FTST 2 Frlterrca Standard Configuration Detail * Drawing FTNL-3r Falterraa Narrow length Configuration Detail * Drawing FT - : Fllterro Narrow Width Configuration Detail www,ContechES.com/fifterra 1800-338-1122 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-17 of 22 Record Date:12/6/2018 11:41 AM King County, WA General Description The following general specificatuons describe the general operations and maintenance requirements for the Contach Engineered Solutions LLC stormwater bioretention filtration system, the Filterra. The system Wilizes physical, chernical and biological mechanisms of a sail, plant and microbe complex to remove pollutants typically found in urban stormwater runoff, The treatment system is a fully equipped, pre -constructed drop -in place unit designed for applications in the Urban landscape to treat contaminated runoff. Stormwater flova through as specially designed filter media mixture contained in a landscaped concrete container. The mixture immobilizes poNutants which are then dw_;ornposed, volota;zed and incorporated into the biornass of the Fitterra system's micro/ macro fauna and flora, Stormwater runoff flows through the media and into an underdrain system at the bottom of the container, Where the treated water is discharged. Higher flows bypass the Mer— to a downstrearn inlet or outUL Mainjenance is a simple, inexpensive and safe operation that does not require confined space access, pumping or vocuum equipment or specialized i0ols. Properly trained landscape personnel can effectively maintain Filter— Stormwater. systerns by following instructions in this manual. www,ConiechES.com/fHferro 1800-338-1122 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-18 of 22 Record Date:12/6/2018 11:41 AM King County, WA Basic Operations Filterra is a bioretention system in a concrete box. Contaminated stormwater runoff enters the filter box through the curb inlet spreading over the 3-inch layer of mulch on the surface of the filter media. As the water posses through the mulch layer, rriost of the larger sediment particles and heavy metals are removed through sedimentaflon and chemical reactions with the organic material in this mulch. Water posses through the soil media where the finer particles are removed and other chemical risoctions take place to 'immobilize and capture pollutants in the sciI media. The decinsed water posses into an underdrain and flows to a pipe system or other appropriate discharge point, Once the pollutants are in the soil„ the bacteria begin to break down and metabolize the materials and the plants begin to uptake and metabolize the pollutants. Some poHutants such as heavy metals, which are chemically bound to organic particles in the mulch, are released over to -ma as the organic master deromposes to release the metals to the feeder roots of the plants and the cells of the bacteria in the soil where they remain and are recycled. Other pollutants such as phosphorus ore chemically bound to the soil particles and released slowly back to the plants and bacteria and used in their metabolic processes. Nitrogen goes through a very complex variety of biochernical processes where it can ulfimcifely and up in the plant/bacteria biomass, turned to nitrogen gas or dissolves back into the water column as nitrates depending on soil temperature, pH and the availability of oxygen. The pollutants ultimately are retained in the mulch, so;1 arid biomass with some passing out of the system into the air or back into the water. Each project presents different scopes for the use of Filters systerns, To ensure than safe and specified function of the stormwater BMP, Contech reviews each application before supply, information and help may be provided to the design engineer during the planning process. Correct Filterra box sizing (by rainfall region) is essential to predict pollutant removal rates for a given area. The engineer shall submit calculations for approval by the local jurisdiction. The contractor is responsible for the correct installation of Hterra units as shown in approved plans. A comprehensive installation manual is available of www.conteches.com. Maintenance Why Maintain? All stormwoter treatment systems require m6ritenance for effective operation, This necessity is often incorporated in your property's permitting process as a legally binding BMP maintenance agreement, Avoid legal challenges from your jurisdiction's maintenance enforcement program. • Prolong the expected lifespan of your Filters media, • Avoid more costly media replacement. • Help reduce pollutant loads leaving your property. Simple maintenance of the Filterra is required to continue effective pollutant removal from slarmwater runoff before discharge into downstrearn waters. This procedure wiH also extend this longevity of the Hving biofilter system, The unit will recycle and accumulate pollutants within the biomass, but is also subjected to other materials entering the throat. This may include trash, silt and leaves etc, which will be ccintairied within the void below the top grate and above the mulch layer. Too much s'& may inhibit the Hterra'sTv flow rate, which is the reason for site stabilization before activation. Regular replacement of the mulch stops accumulation of such sediment. Comech includes a 1-year maintenance plan with each system purchase, Annual included maintenance consists of a maximum of two (2) scheduled Visits. Additional maintenance may be necessary depending on sediment and trash loading (by Owner or at additional, cast). The start of the maintenance plan begins when the system is activated for full operation. Full operation is defined as the unit installed, curb and gutter and transitions in place and activation (by Supplier) when mulch and plant are added and temporary throat protection removed. Activation cannot be carried out until the site is fully stabilized (full lcndscaping, grass cover, final paving and sireet sweeping completed). Maintenance visits are schedoted seasonMly; the spring visit aims tea clean up offer winfor loads inducling salts and sands white the fall visit helps the ".em by removing excessive leaf litter. It has been found that in regions which receive between 30-50 inches of annual rainfall, (2) two visits are generally required; regions with less rainfall often only require (1) one visit per annum. Vciqng land uses can affect maintenance frequency; e.g.. sore fast food restaurants require more frequent trash removal. Contributing drainage areas which are subject to new development wherein the recommended erosion and sediment control measures have not been implemented may require additional maintenance visits. Some sites may be subjected to extreme sediment or trash loads, requiring more frequent maintenance vis4s. This is the reason for detailed notes of maintenance o6ons per unit, helping the Supplier and Owner predict future maintenance frequencies, reflecting individual site conditions. Owner's must promptly natify the (ma;ntenance) Supplier of any damage to the plant(s), which constitute(s) an integral part of the bioretention technology. Owners should cab advise other landscape or maintenance contractors to leave all rrid',ntenance to the SuppPar (i,e. no pruning or ferfllizlnq), www.ContechES.com/,Filterra 1800-338-1122 Instrument Number: 20181206000461 Document:COV Rec: 5219.00 Page-19 of 22 Record Date:12/6/2018 11:41 AM King County, WA Exclusion of Services It is the responsibility of the owner to provide adequate irrigation when necessary to the plant of time Filterra system Clean up due to moor contamination such as oils, chemicals, toxic spills, etc. will result in additional coasts and are not covered under the Supplier maintenance contract. Should as major contamination event occur the Owner must block gaff the outlet pope of the Filterra (where the cleaned runoff drains to, such as drop inlet) and black gaff the throat of the Filterra. The Supplier should be informed immediately. Maintenance Visit Summary Each maintenance visit consists of the followinc3 simple tasks (detailed instructions below), 1. Inspection of Filterra and surrounding area 2. Removal of tree grate and erasion control stones 3. Removal of debris, trash and mulch 4. Mulch replacement 5, Plant health evoluot"son and pruning or replacement as necessary 6. Glenn area around Fil9erra 7, Complete paperwork Maintenance Tools, Safety Equipment and Supplies Ideal tools includes camera, bucket, shovel, broorn„ pruners, hoe/rake, and tape measure. Appropriate Personal Protective Equipment (PPE) should be used in accordance with local or company procedures. This may include impervious gloves where the type of trash is unknown, high visibility clothing and barricades when working in close proximity to traffic and also safety hats and shoes. A T Bar or crowbar should be used for moving the tree grates (cap to 170 lbs ea.), Most visits require minor trash removal and ca fall replacement of mulch. See below for actual number of bogged mulch that is required in each unit size. Mulch shou@d be o double shredded, hordwood variety; do not use colored or dyes! mulch. Some visits may require additional Filterra engineered sail r°ned"ao available from the Supplier. Box Length Box Width Filter Surface Volume at 3" (ft) It of 2 ftz Mulch Area (ftz) Bags 4 4 4 4 2 4 6 6 _ 3 B 4 83 _ _ . _ B 6 12 12 _ 6 10 6 15 15 8 13m 7 23 213 12 www,corTtechES.com/f`lterra 1 800-336-1122 Instrument Number: 20181206000461 Document:COV Rec: 5219.00 Page-20 of 22 Record Date:12/6/2018 11:41 AM King County, WA Keep sufficient documentation of maintenance actions to predict location specific rnoinfenance frequen6es and creeds, An example Maintenance Report is included In this manual. 1. Inspection of Fifterra and surrounding area individualRecord Record on Maintenance Report (see example in this docqrnenf,� the Record on Maintenance Report the following: Standing Water yes I no Damage to Box Structure yes no Damage to Grate yes no Is Bypass Clear yes no If yes answered to any of these observations, record with close-up photograph (numbered). access* Remove cost iron grates for * Dig out silt (if any� and mulch and remove trash & foreign 4ems. Record on Maintenance Report the following: Silt/Clay yes I no Cups/Bags yes I no Leaves yes I no # of Buckets Removed 3. Removal of debris, trash and mulch removalAfter h Filterra engineered rne6u soil to the bottom of the top slob, If this d4tance is greater than 12", add Filterra media (not top soil or other) to recharge to Record on Maintenance Report the following: Distance of Bottom of Top Slab (inches) # of Buckets of Media Added ContechES.com/f;i)ter-a � 800-33 -1122 Instrument Number: 20181206000461 Document:COV Rec: $219.00 Page-21 of 22 Record Date:12/6/2018 11:41 AM King County, WA 4. Mulch replacement * Please see mulch specifications, * Add double shredded mulch evenly across the entire unit to a depth of 3". * Ensure correct repositioning of erosion cantroc stones by the Filterra inlet to aHow for entry of trash during a storm event. * Replace Filterra grates correctly using appropriate lifting or moving tools, tasking care not to damage the plant. ` Plant healthevaluation as necessary • Prune as necessary to encourage growth in the correct directions a • Examine the plant's Record on Maintenance Report the following: Height above Grate Feet) Width at Widest Point (feet) Health alive I dead Damage to plant yes I no Plant Replaced yes I no . Clean area ro Filterra • Clean area around Umt and remove all refuse to be disposed of appropriately, 7. Complete ark * Deliver Maintenance Report and photographs to appropriate locaidan (normally Contech during maintenance contract period). * Some jurisdictions may require submission of maintenance reports in accordance with approvals. It is the responsibility of the Ovvener to caaaTaply with local regulations. www.CoritechES.com/Nierra 1 800-338-1122 Instrument Number: 20181206000461 Document:COV Rec: 5219.00 Page-22 of 22 Record Date:12/6/2018 11:41 AM King County, WA Drainage System Problem Conditions to Check Condition that Should Exist Actions Failure b Inletshould e free of Excessive Accumulated sediments or obstructions aflowiing free Se&rnenls and/or brash Wet sediment or trash trash impair free flow of distributed flow of water shOUld be removed, accumulation,, water mto FIterra. Trash and debris should 'Trash and Excessive trash and/or Minimal trash or other be removed and mulch Mulch Cover flocitable debris debaccumu�bfion, debris on mulch cover. cover raked level. Ensure accumulationdebris bark nugget mulch is not used. "Ponding" in unit could be indicative of clogging due Stormwoter should drain Recommend contact Mulch Cover "Ponding" of water to excessive fine sediment freely and evenly t1wo tQ h monufaciurer and replace On mu�ch cover, accumulation or spill of mulch cover. mulch as a minimum., petroleum o4s. SO'd/raul,ch too wet, Mnts not growing eviidenca of spill, lncorrect Plants shoutil be healthy Contact manufactuear-for Vegetation or in poor plant selection, Post and pest free. advice. �nfestcition. Vandalism to pla nts. Nonts shot.4d be Trim/prune plants in Vegetation Plant grovoh appropnote to the species accordance with typical excessive, and location of FAterm landscaping and safety needs. Cracks wider than 1/2 or evidence of scanStructure Structure has particles particles entering the Vault should be repaired. i vis;ble cracits. structure through the cracks. i�i-a—inten-a—nc­e —isid—e'a—lly to be performed twice annually.