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Home My WebLink AboutRC 20201120003863 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-1 of 14 Record Date:ll/20/2020 5:16 PM Electronically Recorded King County, WA Return Address: City Clerk's Office City of Renton 1055 S Grady Way Renton,WA 98057 DECLARATION OF COVENANT FOR INSPECTION AND MAINTENANCE OF STORMWATER FACILITIES AND BMPS Grantor: Renton Healthcare Investment,L,LC ,_ Grantee: City ofRenton Legal Description: See Attached Exhibit A Assessor's Tax Parcel ID#: 2923� 'rJ-9�42 IN CONSIDERATION of the approved City of Renton Utilit�Construction permit for application fileNo. LUA/SWP U16-005827 relating to the realproperty("Property") described above,the Grantor(s),the owner(s)in fee of that Property,hereby covenants(covenant)with the City of Renton, a political subdivision of the state of Washington,that he/she(they)will observe, consent to, and abide by the conditions and obligations set forth and described in Paragraphs 1 through 10 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(agree) as follows: 1. The Grantor(s)orhis/her(their)successors in interest and assigns("Owners ofthe described property") shall at their own cost, operate,maintain, and keep in good repair,the Property's stormwater facilities and/or best management practices ("BMPs") constructed as required in the approved construction plans and specifications dated 1-5-17 on file with the City of Renton and submitted to the City of Renton for the review and approval of permit(s) U16- 005827_ _.The property's stormwater facilities and/or best management practices ("BMPs") are shown and/or listed on Exhibit B. The property's stormwater facilities and/or BMPs shall be maintained in compliance with the operation and maintenance schedule included and attached herein as Exhibit C. Stormwater facilities include pipes, swales,tanks,vaults,ponds, and other engineered structures designed to manage and/or treat stormwater on the Property. Stormwater BMPs include dispersion and infiltration devices,native vegetated areas,permeable pavements,vegetated roofs,rainwater harvesting systems, reduced impervious surface coverage, and other ineasures designed to reduce the ainount of stonnwater runoff on the Property. 2. City ofRenton shall have the right to ingress and egress over those portions ofthe Property necessary to perform inspections of the stormwater facilities and BMPs and conduct maintenance activities specified in this Declaration of Covenant and in accordance with RMC4-6-030. 3. If City ofRenton determines that maintenance or repair work is required to be done to any of the stormwater facilities or BMPs, City of Renton shall give notice of the specific maintenance and/or repair work required pursuant to RMC 4-6-030. The City shall also set a reasonable time in which such Page 1 of 3 Form Approved by City Attorney 10/2013 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-2 of 14 Record Date:11/20/2020 5:16 PM King County, WA work is ta b��otx�pl�ted by tl�e Owfl�ers. Ifthe above required maintenance or repair is r�c�t�onapleted within the time set by the C;ity,the Cit�may�erform the reqttired rraaintenance or repair, and hereby is given acces�tc� the�roper�y, s�ibject to the exclusion in Paragraph� above, far sucYt purpc�ses. Written notic�will be sent to the tawners stating the City's intention ta pe�-form slicl�work. This wark will not eommenc�urttil at least seven (7) days after slich notice is mailed. �f,�vithin the sole dis�retion af the �ity, there exists an irnrninent or�resent dang�r,the seven (7� day nc�tice period will be wa�ved a.nd rnaint�nance ar�dJor repair work wili be�inimrnediat�ly. 4. If at a1�y tim�;the City of Renton reasonably deterrnines that a starmwater ta�ility or�MP an the�'roperiy creates any of the hazar�ous conditior�s listed in I�MC 4-4-060 C�or rel�vant municipal suecessar°s c�des as applicable and l�er�i�incorpc�rated by reference, the City m�y take pneasures sp�cified thereim. 5. The t�wners sha11 assurne all res�onsibility for fh� cost of any maintenance c�r re�air wark completed by the�ity as describ�d ir�Paragrapl� 3 or any n�easures tak�n by th� City to addr�sshazard��s eanditions as described in Paragc-apl�4. �uch responsibi�xt�shall in�lude rermburs�ment to the �idy witdain thirty(30} days of the receipt of the invoace for any such work performed. Ov�rdue payments v✓ill require payment af interest at the �urrent legal rate �s liquidated datriages. If legad action eii�ues, the prevailing�arty is entitled to recover reasonable liti�;atian costs and attorriey's fees. b. The C)wn�rs aae ilereby required to obtain written a�proval fi-om City c�f Renton prior to fillit�g,piping, cutting, or a-en�ovizig vegetatial�(exce�t i��c�tttin�landscap�maintenance) in o�sen vegetated storrnwater facilities (s�ch as swales, chann�ls, ditches,ponds, etc.), o�-performing any alterations or a�nodificatinns to the stc�rmwater facilities and�3Pv1�s referenced in this Declar�tion of Covenant. 7. Any notac� or cans�nt required to be giv�n or rstherwise prc�vided fc�r by th�p�-ov�si�ns ofthis �greement sh�ll be effective upor��ersc�nal delivery, or three{3) days after rr�aili:n�by Certi�ed Mail, returr►rec��pt req�est�c�. 8. With r�gard to the matter�s addressed herein,this agreernent constitt�tes the entire agreesnent bet�vee�tize�arties, and supersedes all prior ciiscussic�7is, negotiatiams, and all agreenrsents v�rhatsoever whether oral or wt-itten. 9. T'his L7eclaration of Cove�ant is intea�ded to protect the value and desirability of th�real property described above, and shall intare t�t17e benefit of all the citiz�ias of th� City of Renton and its successors and assigt's. 'ihis£�eclaratic�r�of Cc�venant shall rozn`vith t.he land and be binding u�on C;rantar(s)y c�I�U S3Y'dI�ILOI��S(S') successc�rs in interest, andassi��s. 10. Th�sDe�lar�.tion�fCt�v�nantrnayb�terminatedbyex�cutic�nafawrittenagr��m�ntbytl�e (awner-s ai�d the City that is recorded by T�irig County in its real propertyr��ordse Il`�WITNESS WHER�.OF, this Declaration of Covenant fc�r th� Ta��:�it�a� and Maintenar�ce of St�rmwater Facilities and�1VIPs is executed this, day�f` � ��^ �..�.�20 � ' �..,�.�- r � ��"��;�� '.t��„„owa�er of th�Property ; ,��..�.....�...n_.�.��.��.,��..� ��. GRANTfJI3, owner of the Property Fage 2 of 3 Fonn Approved by City Attormey ]0/20l 3 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-3 of 14 Record Date:11/20/2020 5:16 PM King County, WA s�rA�r�c�rw�s�ImT��rt�r� � �ara�rT�a��v� >�s. CJsa th�s day persoraally ap}�e�r�d befci e�rz�: � �.,.w�1: T tcs rne known to be tiie�1�c�ividual(s)described ir� and wha executed th��e�i�l�� k �nd fore�oing in�trtz�n�nt at�d ackr�owl�dged that they si�led tl�e sa�ne �s tlleir fi-�e and voltintary act and de�d, f�r the uses and p�rpases th�rein stated. CJiven under my i�<�r�ci��°s�i�f��::;��tl�r�_.�7°�`._��af' ��.�' �,.' ��.��.�„. � ��„�.�w�� __ ��,° . _�.�..��..�..��..�w� ,�� '�"*�� '��+�+ Frintedr�� .��.��.� � ��"`�`c�''"�"°��,�>�'�w� � o� Notary P�blie i� and�or the �tate of iTVashin�tor�, � �" ��" �'�"",��"�� residi�n at �� , ,-.�� , ��°�°�` ? �. �� +,� C1t� � ,� � �� ,�,�� —�-�- ��"''"'°a��:�:��'`� " � ��.�� 1!� a cs�r�trnent ex lres ..� '�` � � ��. Y �P � i�� .�..�_._...� .��.___�...�...,� Page 3 0$°3 I�c�rm,4pprov�d by City�ttorney 1 dl2013 , Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-4 of 14 Record Date:11/20/2020 5:16 PM King County, WA Exhibit A Legal Description TRACT A: PARCEL C OF BOUNDARY LINE ADJUSTMENT NO S91L0069 RECORDED APRIL 26, 1991 UNDER RECORDING NO. 9104261602 IN KING COUNTY, WA. TRACT B: A PERMANENT NON-EXLUSIVE EASMENT FOR PEDESTRIAN AND VEHICULAR INGRESS AND EGRESS AS MORE PARTICULARLY SET FORTH IN INSTRUMENT ENTITLED "RECIPROCAL EASMENT AGREEMENT" RECORDED SEPTEMBER 13, 2013 AS KING COUNTY RECORDING NO. 20130913002675 AND RE-RECORDED OCTOBER l, 2013 UNDER RECORDING NO. 20131001000418 . Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-5 of 14 Record Date:11/20/2020 5:16 PM King County, WA EXHIBIT " B" STORM n DRAINAGE FACILITIES NOTE: ALL FACILITIES SHOWN IN EXHIBIT ARE PRIVATE FACILITIES. _ PERMEABLE N .T.S. �� _ PAVEMENT (TYP.) � � RAIN GARDEN #1 RAIN GARDEN #2 1,200 S.F. � 8'x410' � °,��, - � � � '�� -�-� - - sE � �4T� - - � ,�«., H s�- �� , .:_ .� _ � � . � � r-- -----,-- �m„ � � --- --- � �� — \4T. �_ �"".°�`•��—�-° �;, � �`� ` �` �� -m��, b�...,. \ ��'`� . O �"� ��, � RR,h, � .,. V —��i i �. \ `�\�� }�� —. ! u� � _ . ��° p �� = y�—� — — _ � . ,. 1; � �., o , r _ __�_ � ,ne f � t d, ��. �� F°" � " . . _ °_ ..y� i i �_,,.. � � - � � � --- -- ' o ��a'��,��t�,��:�� ,� �� I�� B'�" RAIN GARDEN #3 `� y ' i��r��i�� _ _. ��. ._,� . f' I 8'x235' �� _� r�� i_� � ��... - � � � � y �� ., _�___,_�_-�_ .. �.��_. � �u'� � _L_ _I_J_� A ......... . _ } ��`�\ --- L._GL I.__J_.J— �.�� LCJ � r �� \ �.. � — � �..� _, . _�� ,,� � � _��E ��I--�� _ H. ti �� -o/ _ \ `�{� STORM TRAP FLOW �V'� CONTROL FACILITY 48'x86'x10' PROPOSED ONSITE CONTECH STORMFILTER � JOB N0. 845-020-015 DRAWING NAME : EN-08 DATE : 01/06/2017 CONSULTING ENGINEERS LLC DRAWN : CJR 33400 8th Ave S, Suite 205 I � I�I � I SHEET 1 OF 1 Federal Way, WA 98003 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-6 of 14 Record Date:11/20/2020 5:16 PM King County, WA COl`ITECH STORMFILTER SYSTEM TO BE MAII`ITAII`IED Al`ID Il`ISPECTED Il`I ACCORDAI�ICE WITH MAI�IUFACTURER'S SPECIFICATIOI�IS. Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-7 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPENI�IX A M�,IIVTFNANCE R�Qi_TLR�M�NTS;OR FLOW C`ONTROL,CONVPYANCF.,AND WQ;ACILITIES NO.3-DETENTION TANKS AND VAULTS Maintenance Defeet or Problem Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Site Trash and debris Any trash and debris which exceed 1 cubic foot Trash and debris cleared from site. per 1,000 square feet(this is about equal to the amount of trash it would take to fill up one standard size�ce garbage can). In general, there should be no visual evidence of dumping. Noxious weeds Any noxious or nuisance vegetation which may Noxious and nuisance vegetation constitute a hazard to County per�onnel or the removed accorciing to applicable public. regulations. No danger of noxious vegetation where County personnel or the public miaht normally be. Cont2min2nts�nd Any evidence of cont_a.min�nts or pollution such M2terials removed�nd disposed of pollution as oil,gasoline,concrete slwries or paint. according to applicable regulations. Source control ESMPs implemented if appropriate. No contaminants present other th2n a surf?ce oil film. Grass/groundcover Grass or groundcover exceeds 18 inches in Grass or groundcover mowed to a height. height no gre?ter thzn 6 inches. Tank or Vault Trash and debris Any trash and debris accumulated in vault or tank No trash or debris in vault. Storage Area (includes floatables and non-floatables). Sediment Accumulated sediment depth exceeds 10%of the All sediment removed from storage accumulation diameter of the storage area for'/2 length of area. 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'/length of tank. Tank Stnacture Plugged air vent Any blockage of the vent. Tank or vault freely vents. Tank bent out of Any part of tank/pipe is bent out of shape more Tank repaired or replaced to design. shape than 10°/a of its design shape. Gaps between A gap wider than%-inch at the joint of any tank No water or soil entering tank sections,damaged sections or any evidence of soil particles entering through joints or walls. joints or cracks or the tank at a joint or through a wall. tears in wall Vault Structure Damage to wall, Cracks wider than'/:-inch,any evidence of soil Vault is sealed and structurally frame,bottom,and/or entering the structure through cracks or qualified sound. top slab inspection personnel determines that the vault is not structurally sound. InIeUOutlet Pipes Sediment Sediment filling 20%or more of the pipe. InleUoutlet pipes clear of sediment. accumulation Trash and debris Trash and debris accumulated in inleUoutlet No trash or debris in pipes. pipes(includes floatables and non-floatables). Damaged Cracks wider than'/-inch at the joint of the No cracks more than'/-inch wide at inlet/outlet pipes or any evidence of soil entering the joint of the inleUoutlet pipe. at the joints of the inleUoutlet pipes. 2009 Surface Water Design Manual—Appendix A 1/9/2009 A-5 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-8 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPE_N1�IX A M111N'I'ENANCE R�QULRFM�NTS:LOW CONTROL,CONVPYANCP,AN1�WQ FACILITIES NO.3-DETENTION TANKS AND VAULTS Maintenance Defeet or Problem Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Access Manhole Cover/lid not in place Cover/lid is missing or only partially in place. Manhole access covered. Any open manhole reauires immediate maintenance. Locking mechanism Mechanism cannot be opened dy one Mechanism opens with proper tools. not working maintenance person with proper tools.Bolts cannot be seated. Self-locking cover/lid does not work. Cover/lid difficuR to One maintenance person cannot remove Cover/lid can be removed and rernove wver/lid after applyi�ig 80 Ibs of lift. rei�istslled by oiie rnai�iteneiioe person. Ladder rungs unsafe Missing rungs,misalignment,rust,or cracks. Ladder meets design standards. Allows maintenance person safe acc:ess. Large access Damaged or difficuk Large access doors or plates cannot be Replace or repair access door so it doors/plate to open opened/removed using normal equipment. can opened as designed. Gaps,doesn't cover Large access doors not flat andlor access Doors close flat and covers access completely opening not completely covered. opening completely. Lifting Rings missing, Lifting rings not capabls of lifting weight of door Lifting rings sufficient to lift or rusted or plate. remove door or plate. 1/9/2009 2009 Surface Water Design Manual—Appendis A A-G Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-9 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPENI�IX A M�,IIVTFNANCE R�Qi_TLR�M�NTS;OR FLOW C`ONTROL,CONVPYANCF.,AND WQ;ACILITIES NO.4-CONTP.OL STP.UCTUP.E/FLOW P.ESTP.ICTOP. Maintenance Defeet or Problem Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Structure Trash and debris Trash or debris of more than'/2 cubic foot which No Trash or debris blocking or is located immediately in front of the structure potentially blocking entrance to opening or is blocking capacity of the structure by structure. more than 10°/a. Trash or debris in the structure that exceeds'/, No trash or debris in the structure. the depth from the bottom of basin to invert the lowest pipe into or out of the basin. Deposits of garbage exceeding 1 cubic foot in No condition present which would volume. attract or support the breeding of insects or rodents. Sediment Sediment exceeds 60%of the depth from the Sump of structure cont�ins no bottom of the structure to the invert of the lowest sediment. pipe into or out of the structure or the bottom of the FROP-T section or is within 6 inches of the invert of the lowest pipe into or out of the structure or the bottom of the FFOP-T section. Gamage to frame Corner of frame extends more than'/,inch past Frame is even with curb. and/or top slab curb face into the street(If applicable). Top slab has holes larger than 2 square inches or Top slab is free of holes and cracks. cracks wider than'/inch. Frame not sitting flush on top slab,I.e., Frame Is sltting flush on top slab. separation of more than%<inch of the frame from the top slab. Cracks in walls or Cracks wider than'/z inch and longer than 3 feet, Structure is sealed and structurally bottom any evidence of soil particles entering structure sound. through cracks,or maintenance person judges that structure is unsound. Cracks wider than%z inch and lonaer than 1 foot No cracks more than'/4 inch wide at at the joint of any inlet/outlet pipe or any evidence the joint of inlet/outlet pipe. of soil particles entering stnacture through cracks. Settlement/ Structure has settled more than 1 inch or has Basin replaced or repaired to design misalignment rotated more than 2 inches out of alignment. standards. Damaged pipe joints Cracks wider than'/zinch at the joint of the No cracks more than'/4-inch wide at inleUoutlet pipes or any evidence of soil entering the joint of inleUoutlet pipes. the structure at the joint of the inleUoutlet pipes. Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of pollution as oil,gasoline,concrete slurries or paint. awording to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Ladder rungs missing Ladder is unsafe due to missing rungs, Ladder meets design standards and or unsafe misalignment,rust,cracks,or sharp edges. allows maintenance person safe access. FROP-T Section Damage T section is not securely attached to structure T section securely attached to wall wall and outlet pipe structure should support at and outlet pipe. least 1,000 Ibs of up or down pressure. Structure is not in upright position(allow up to Structure in correct position. 10%a from plumb). Connections to outlet pipe are not watertight or Connections to outlet pipe are water show signs of deteriorated grout. tight;structure repaired or replaced and works as designed. Any holes—other than designed holes—in the Structure has no holes other than structure. designed holes. Cleanout Gate Damaged or missing Cleanout gate is missing. Replace cleanout gate. 2009 Surface Water Design Manual—Appendix A 1/9/2009 A-7 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-10 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPE_N1�IX A M111N'I'ENANCE R�QULRFM�NTS:LOW CONTROL,CONVPYANCP,AN1�WQ FACILITIES NO.4-CONTP.OL STP.UCTUP.E/FLOW P.ESTP.ICTOP. Maintenance Defeet or Problem Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Cleanout gate is not wstertight. vate is watertight and works as designed. Gate cannot be moved up and down by one Gate moves up and down easily and maintenance person. is watertight. Chain/rod leading to gate is missing or damaged. Chain is in place and works as u�siyneu. Orifice Plate Damaged or missing Control device is not working properly due to Plate is in place and works as missing,out of place,or bent orifice plate. designed. Obstructions Any trash,debris,sediment,or vegetation Plate is free of all obstructions and blocking the plate. works as designed. Overflow Pipe Obstructions Any tr2sh or debris blocking(or h2ving the Pipe is free of 211 obstructions�nd potential of blocking)the overflow pipe. works as designed. Geformed or damaged Lip of overflow pipe is bent or deformed. Overflow pipe does not allow lip overflow at an elevation lower than design InIeUOutlet Pipe Sediment Sediment filling 20°/a or more of the pipe. InleUoutlet pipes clear of sediment. accumulation Trash and debris Trash and debris accumulated in inleUoutlet No trash or debris in pipes. pipes(includes floatables and non-floatables). Damaged Cracks wider than'/2-inch at the joint of the No cracks more than'/4-inch wide at inleUoutlet pipes or any evidence of soil entering the joint of the inleUoutlet pipe. at the joints of the inlet/outlet pipes. Metal Grates Unsafe grate opening Grate with opening wider than'/e inch. Grate opening meets design (If Applicable) standards. Trash and debris Trash and debris that is blocking more than 20% Grate free of trash and debris. of arate surface. footnote to ouidelines for disposal Damaged or missing Grate missing or broken member(s)of the grate. Grate is in place and meets design standards. Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in place. Cover/lid protects opening to Any open structure requires urgent structure. maintenance. Locking mechanism Mechanism cannot be opened by one Mechanism opens with proper tools. Not Worlcing maintenance person with proper tools.Bolts cannot be seated. Self-locking cover/lid does not work. Cover/lid difficuk to One maintenance person cannot remove Cover/lid can be removed and Remove covedlid after applying 80 Ibs.of lift. reinstalled by one maintenance person. 1/9/2009 2009 Surface Water Design Manual—Appendis A A-8 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-11 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPENI�IX A M�,IIVTFNANCE R�Qi_TLR�M�NTS;OR FLOW C`ONTROL,CONVPYANCF.,AND WQ;ACILITIES NO.5-CATCH BASINS AND MANHOLES Maintenance Defeet or Problem Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Structure Sediment Sediment exceeds 60%of the depth from the Sump of catch basin contains no bottom of the catch basin to the invert of the sediment. 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 Trash or debris of more than'/cubic foot which No Trash or debris blocking or is located immediately in front of the catch ba�in potentially blocking entrance to opening or is blocking capacity of the catch basin catch basin. by more than 10%. Trash or debris in the catch basin that exceeds No trash or debris in the catch basin. �/,the depth from the bottom of b2sin to invert the lowest pipe into or out of the basin. Ge�d animals or veget2tion thzt could gener�te No dead anim�ls or vegetation odors that could cause complaints or dangerous present within catch basin. g?ses(e.g.,methane). Deposits of garbage exceeding 1 cubic foot in No condition present which would volume. attract or support the breeding of insects or rodents. Damage to frame Corner of frame extends more than'/+inch past Frame is even with curb. and/or top slab curb face into the street(If applicable). Top slab has holes larger than 2 square Inches or Top slab Is free of holes and cracks. cracks wider than'/a 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 top slab. Cracks in walls or Cracks wider than'/z inch and longer than 3 feet, Catch basin is sealed and bottom any evidence of soil particles entering catch structurally sound. basin throuah cracks,or maintenance person judges that catch basin is unsound. Cracks wider than%:inch and longer than 1 foot No cracks more than'/a inch wide at at the joint of any inlet/outlet pipe or any evidence the joint of inlet/outlet pipe. of soil particles entering catch basin through cracks. SettlemenU Catch basin has settled more than 1 inch or has Basin replaced or repaired to design misalignment rotated more than 2 inches out of alignment. standards. Damaged pipe joints Cracks wider than'/zinch at the joint of the No cracks more than Y4-inch wide at inleUoutlet pipes or any evidence of soil entering the joint of inleUoutlet pipes. the catch basin at the joint of the inlet/outlet pipes. Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of pollution as oil,gasoline,concrete slurries or paint. according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. InIeVOutlet Pipe Sediment Sediment filling 20%or more of the pipe. InleVoutlet pipes clear of sediment. accumulation Trash and debris Trash and debris accumulated in inlet/outlet No trash or debris in pipes. pipes(includes floatables and non-floatables). Damaged Cracks wider than'/:-inch at the joint of the No cracks more than'/<-inch wide at inleUoutlet pipes or any evidence of soil entering the joint of the inleUoutlet pipe. at the joints of the inlet/outlet pipes. 2009 Surface Water Design Manual—Appendix A 1/9/2009 A-9 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-12 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPE_N1�IX A M111N'I'ENANCE R�QULRFM�NTS:LOW CONTROL,CONVPYANCP,AN1�WQ FACILITIES NO.5-CATCH BASINS AND MANHOLES Maintenance Defeet or Problem Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed Metal Grates Unsafe grate opening vrate with opening wider than'/a inch. vrate opening meets design (Catch Basins) standards. Trash and debris Trash and debris that is blocking more than 20% Grate free of trash and debris. of grate surface. footnote to guidelines for disposal Damaged or missing Grate missing or broken member(s)of the grate. Grate is in place and meets design Any open structure requires urgent stan�iaru5. malntenance. Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in place. Cover/lid protects opening to Any open structure requlres urgent structure. main4enance. Locking mechanism Mechanism cannot be opened by one Mechanism opens with proper tools. Not Working maintenance person with proper tools.Bolts cannot be seated. Self-locking cover/lid does not work. Cover/lid difficuR to One maintenance person cannot remove Cover/lid can be removed and Remove cover/lid after applying 80 Ibs.of lift. reinstalled by one maintenance person. 1/9/2009 2009 Surface Water Design Manual—Appendis A A-10 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-13 of 14 Record Date:11/20/2020 5:16 PM King County, WA APPENI�IX A M�,IIVTFNANCE R�Qi_TLR�M�NTS;OR FLOW C`ONTROL,CONVPYANCF.,AND WQ;ACILITIES NO.6-CONVEYANCE PIPES AND DITCHES Maintenance Defeet or Problem Conditions When Maintenance is Needed Results Expected When Component Maintenance is Performed Pipes Sediment&debris Accumulated sediment or debris that exceeds Water flows freely through pipes. accumulation 20°/a of the diameter of the pipe. Vegetation/roots Vegetation/roots that reduce free movement of Water flows freely through pipes. water through pipes. Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of p�lluti�n as oil,gasaline,cancrete slurries ar�iaint. au:aruiny ta a�,plicaGle reyulatians. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Damage to protective Frotective coating is damaged;rust or corrosion Fipe repaired or replaced. coating or corrosion is we2kening the structur2l integrity of 2ny p2rt of pipe. Gam�ged Any dent th2t decre�ses the cross section area o{ pipe repaired or replaced. pipe by more than 20%or is determined to have we2kened structur?I integrity of the pipe. Ditches Trash and debris Trash and debris exceeds 1 cubic foot per 1,000 Trash and debris cleared from square feet of ditch and slopes. ditches. Sediment Accumulated sediment that exceeds 20%of the Ditch cleaned/flushed of all sediment accumulation design depth. and debris so that it matches design. Noxious weeds Any noxious or nuisance vegetation which may Noxious and nuisance vegetation constitute a hazard to County personnel or the removed according to applicable public. regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and Any evidence of contaminants or pollution such Materials removed and disposed of pollution as oil,gasoline,concrete slurries or paint. according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Vegetation Vegetation that reduces free movement of water Water flows freely through ditches. through ditches. Erosion damage to Any erosion observed on a ditch slope. Slopes are not eroding. slopes Rock lining out of One layer or less of rock exists above native soil Replace rocks to design standards. place or missing(If area 5 square feet or more,any exposed native Applicable) soil. 2009 Surface Water Design Manual—Appendix A 1/9/2009 A-11 Instrument Number: 20201120003863 Document:COV Rec: $116.50 Page-14 of 14 Record Date:11/20/2020 5:16 PM King County, WA C"..2.5 RA11V Ci?iR�F.N C.2.5.3 MAINTENANCE INSTRUCTIONS FOR A RAIN GARDEN If the rain garden flow control BMP is proposed for a project,the following maintenance and operation instructions must be recorded as an attactunent to the required declaration of covenaut aud grant of easement per Requirement 3 of Section C.133(p.G18). The intent of these instsuctions is to explain to future property owners,the purpose of the SMI'and how it must be maintained and operated. These instrnctions are intended to be a minimnm;DDES may require additional instrnctions based on site- specific conditions. Also,as the County gains more experience with the maintenance and operation of these BMYs,future updates to the instructions will be posted on King County's Surface Water Desigr� Manual website. ❑ TEXT OF INSTRUCTIONS Your property contains a storniwater ri�anasenient flow control BMP(best managenient practice)called a "rain garden,"which was installed to mitigate the stormwater quantity and quality impacts of some or all of the impervious or non-native pervious surfaces on your property. Rain gardens,also known as "bioretention,"are vegetated closed depressions or ponds that retain and filter stormwater from an area of impervious surface or non-native pervious surface. The soil in the rain garden has been enhanced to encour�ge and Gupport vigorous pl?nt growth th�t ServeG to filter the w�ter�nd sust�in infiltr?tion c�pacity. Depending on soil conditions,rain gardens may have water in them throughout the wet season and may overflow during major storm events. The size, placement,and design of the rain garden as depicted by the flow control BMP site plan and design details must be maintained and may not be changed without written approval either from the King County Water and Land Resources Division or through a future development permit from King County. Plant materials may be changed to suit tastes, but chemical fertilizers and pesticides must not be used. Mulch may be added and additional compost should be worked into the soil over time. Rain gardens must be inspected annually for physical defects. After major storm events,the system should be checked to see that the overFlow system is working properly. If erosion channels or bare spots are evident,they should be stabilized with soil,plant material,mulch,or landscape rock. A supplemental watering program may be needed the first year to ensure the long-term survival of the rain garden's vegetation. Vegetation should be maintained as follows: 1)replace all dead vegetation as soon as possible;2)remove fallen leaves and debris as needed;3)remove all noxious vegetation when discovered;4)manually weed without herbicides or pesticides;5)during drought conditions,use mulch to prevent excess solar damage and water loss. 2009 Surface Water Design Manual—Appendix C 1/9/2009 C-63