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Home My WebLink AboutRC 20241107000050 Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-1 of 13 Record Date:ll/7/2024 8:13 AM Electronically Recorded King County,WA Return Address: City Clerk's Office City of ftenton 1Q55 S Grady Way Renton,WA 98057 DECLARATION OF COVENANT FOR INSPECTtQN AND MAINTERIANCE QF DRAINAGE �ACILITIES AND ON-SITE BMPS Grantar: Century Communities of Washington, LLC,A Delaware Limited Liability Company Grantee: City af Renton, a Washington municipal corporation �egal Descriptian: ABBRV: LOT 35, CANOPY,VOL. 304 OF PLATS, PGS. 63-73 FULL DESCRIPTiON ON EXHIBIT C Assessor's Tax Parce! IQ#: 1328710350 IN COIySIDERAT(ON of the approved City of Renton fcheck one of the following) � Residentia! Building Permit �Commercial Building Permit ❑Clearing and Grading Permit �Civi) Construction ar Utility Permit for Permit{s)B24003348 (constructr'on/suitding/utftityPermit�)relafing to the real property {"Praperty") described above, the Grantor{s}, the owner{s) in fee of that Property, hereby covenants (cavenant}with the City of Renton ("City of Renton" or"City"), a municipal corparation 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 9 below with regard to the Property, and hereby grants {grant) an easement as described in Paragraphs 2 and 3. Grantar(s) hereby grants{grant),covenants {covenant},and agrees(agree} as fallows: 1. The Grantor(s)or his/her{their}successors in interest and assigns{"Owners"}shall at their own cost, aperate, maintain,and keep in good repair,the Property's drainage facilities canstructed as reguired in the approved construction plans and specifications CANOPY-C21000838 tProject ��an#) an file with the City of Renton and submitted to the City of Renton for the review and approval of permit(s) �240Q3348 (ConstructionjBui/ding/UtilityPermit#).The Praperty's drainage facilities are shown andjor listed on Exhibit A—Site Plan. The Property's drainage facilities shall be maintained in compliance with the operation and maintenance schedule included and attached herein as Exhibit 8—Operations and Maintenance. Drainage facilities include pipes, channels, flaw control facilities, water quaCity facilities, on-site best management practices (BMPs) and other engineered structures designed to manage andjor Page 1 of_13_ Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-2 of 13 Record Date:ll/7/2024 8:13 AM King County,WA treat stormwater an the Property. On-site BMPs include dispersion and infiltration devices, bioretention, permeable pavements, rainwater harvesting systems, tree retention credit, reduced imperviaus surface faotprint, 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 aver thase portions of the Praperty necessary to perform inspections of the stormwater facilities and BMPs and conduct maintenance activities specified in this Declaratian of Covenant and in accordance with the Renton Municipal Cade. City of Rentan shall provide at least thirty{30) days' written notice to the Owners that entry on the Property is planned far the inspection of drainage facilities.After the thirty(30} days,the Owners shall allow the City of Renton to enter for the sole purpose of inspecting drainage facili#ies. En lieu af inspection by the City,the Owners may elect to engage a licensed civil engineer registered in the state of Washington who has expertise in drainage to inspect the drainage facilities and provide a written report describing their candition. If the engineer aption is chosen,the Owners shall provide written notice to the City of Renton within fifteen (15)days of receiving the City's notice of inspection.Within thirty(30)days of giving this notice,the Owners,or engineer on behalf of the Owners,shafl provide the engineer's report to the City af Renton. If the repart is nat provided in a timely manner as specified above,the City af Rentan may inspect the drainage facilities without further notice. 3. If City of Renton determines from its inspection, or from an engineer's report pravided in accordance with Paragraph Z,that maintenance, repair, restoration, andJor mitigation wark is required to be dane to any of the drainage facilities, City of Renton shalf natify the Owners of the specific maintenance, repair, restoratian, andjor mitigation work {"Work") required pursuant to the Rentan Municipal Code. The City shall also set a reasanable c{eadline for the Owners ta complete the Work, or to provide an engineer's report that verifies completion af the Work. After the dead(ine has passed, the Owners shal( allow the City access to re-inspect the drainage facilities unless an engineer's report has been provided verifying completion of the Wark. If the Work is not completed within the time frame set by the City, the City may initiate an enforcement actian andJor perform the Work and hereby is given access to #he Property far such purposes. Written notice will be sent to the Owners stating the City's intention to perfarm such Work.This Work wifl not commence until at least seven{7)days after such notice is mailec{. If, within the sole discretion of the City, there exists ar� imminent or present danger, the seven {7) day notice period will be waived and Work wil] begin immediately. 4. The Owners shall assume all responsibility for the cast of any Work, or any measures taken by the City to address conditions as described in Paragraph 3. Such respansibility shall inc(ude reimbursement to the City within thirty(30}days of the receipt of the invaice for any such Work performed. Overdue payments will require payment of interest at the maximum legal rate allowed by RCW 19.52.020(currently twefve percent (12l)}. If the City initiates fegal action to enforce this agreement, the prevailing party in such actian is entitled to recover reasonable litigation costs and attarney's fees. 5. The Owners are required to obtain written appraval from City of Renton priar to filling, piping, cutting, or removing vegetation (except in routine landscape maintenance) in open vegetated stormwater facilities (such as swales, channels, ditches, pands, etc.), or performing any alterations or madifications to the drainage facilities referenced in this Declaration of Covenant. Page 2 of_13_ Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-3 of 13 Record Date:ll/7/2024 8:13 AM King County,WA 6. Any notice or consent required to be given or atherwise pravided for by the provisions of this Agreement shali be effective upan personal delivery,ar three(3}days after mailing by Certified MaiM, return receipt requested. 7. With regard to the matters addressed herein,this agreemet�t constitutes the entire agreement between the parties, and supersedes all priar discussians, negotiatians, and all agreements whatsoever whether aral or written. 8. This Declaration of Cavenant is intended ta protect the value and desirability and promote efficient and effective management of surface water drainage of the real property described above, and shalf inure to the benefit af all the citizens of the City of Renton and its successors and assigns. This Declaration of Covenant shalf run with the land and be binding upon Grantor{s}, and Grantor's(s') successors in interest,and assigns. 9. This Declaration of Covenant may be terminated by execution of a written agreement by the Owners and the City that is recorded by King Caunty in its real property recards. IN WITNESS WHEREOF, this Declaration of Covenant for the Inspection and Maintenance af Drainage acilities is execut this�day of � -�-��-��' , 20�. � � � GRANT�R,owner af the Property GRANTOR, awner of the Property Mrck Cermak, Division President of Century Communifies of Washington, LLC STATE OF WASHINGTON ) COUNTY OF KING )ss. On this day personally appeared before me: ��'�,� �� , to me knawn to be the individual{s) described in and who executeci the within and foregoing instrument and acknowledged that they signed the same as their free and valuntary act and deed,for the uses and purposes therein stated. Given under my hand and official seal this ��'� day of ��' A , 20�_. ��;�a�\\4ittt4ytt --��.� `��rt��J �l�s��$��tio�+t�,o�� j� ��`��'��" ��L r��-�'�' � ^o� a�Y��¢��`�� % � s�, �' � Printed name � 2��OT`�m � � Notary Public in and farthe State of ijp��%,�r��-$,� ��9� Washington, residing at `/d ��,��t\1�14��'�(y� "`° � �y- / � �� jt+t��Vt/AS��a``� c� r � My appointment expires ��`�� Page 3 of_13_ Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-4 of 13 Record Date:ll/7/2024 8:13 AM King County,WA EXNIBITA -BMP PLAli1 CANaP}'C�NSTRUCTIDN OFNEW�1NGL�FAMIL YRESII��NCE �� NOl'39'10 E 35.00 -� �, , z o 0 � 35 � � 2,45(?f SF ,� ,� ' 0.06 ACRE ;� h � � � _ � _ FERfORATED PiPE CONNfCilDN PER ClTY � . Of RENTON SURFAG'f , d e WAF£!�1��SIGN MANUAI, — o fTGURE C.2.11.A � b _ � Qo �— °4 � .St�1l AMENIIMENT N�?7�S � NOl'39't0£ 35.IIO� —F(X,'L,4Nf1SCAPE ARFAS THAT ARE R v Y UNIh�Rt,41N BY AL11ER�SAN11Y 1 t?,4,� Tf�f N,4T1V�MATFRtA1 SNfXltll Bf S`GG'AR}FIEi1 TfJ A ° DEPTN�l8 lNCtlES i#TH�V 1N£LANIISCAPE ,9R�4 Tt7 rf11DNr F(�RtXJT t�OW1N AND iQ'PR1v,9TE DRAINAGf !,l�PRtJt� 11R,41N,4�`rtRlWiYI� TRf�",� Tt1t` £ASEMfNT L,,yypS�ApF GYhy7R,q�T�SH�IIp�f �l f 00 �'�UTIOt1s hfoT TYI SCAR1fY AfATEIPt�dl Ot1757f�E�7t1E 1rftY13S�AP�",4R�4. S�E �B�RD� W E r�o�-c��c�r�r��n��r�r,�rr.� — GI',4S.S ANII R�QUIREfI IANiJS�4P1N� ,4REAS 5�',�LL Ct,�YTAfN,4T tFAST T�P?,�N1J l�NF—X,41F ING�S t�CI,MlPOST L� l,�PI.�TEt1 1t�Sf�L f#fTtt fti2� Tt1 1t1 FfR(�Nl' 57�L t�,4M1C,ilA 77Fri CI�VT�T. �j —£XtS�1N�LYAY t,�5',4NDY 5'�1S LAN11SCr9PlNG!S Ti1 BE lN.�T,411£!3 SH�#LL BE scatF r'= 20' ,��t��rm �7x,�v�cnvc st�t�vr. PAGE 4 OF 13 BUI�DER: CENTURY COMMUNlTIES Lf�J�� avaeN�rnreeR�Nc DATE 5j22/24 PARGEL NO.: 132$71�3J�fl �J J tANDSCAPEARCNITKTURE PtANNING �DES/GN SURVEYfNG DESIGNED C�R£ ADDRESS�Q3¢ABfRDffN 1YAYNE �`,q�1DpY 72700NEl95fh5t,5uire3408othe0,Woshington98011475.885J877 PROJECT NUMBER DRAWN CAF 18054 _, - � - 'c �€��iPL � ��<,r r.�. �}rt` �� _ .�.�.. _ -I=- = — Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-5 of 13 Record Date:ll/7/2024 8:13 AM King County,WA � EXH16[T B-C3FEFtATtt1NS AND NtA[NTENANCE MAINTE[�ANCE INSTRUCTIQNS F�R PERFORATED PIFE CC)tVt�ECTICIN Yaur properCy contains an on-sifie BMP(best management prxctice)cafled"Perfarated ptpe connecttons," which was installed ta mitigate the stormwater quantity and quality impacts af some ar s[I of the impervious surFaces ar non-native perviaus surFaces on yattr praperty. Perforated pipe connecttons are intended ta canvey concentrated runoff from impervious surFaces {usua[ly raof runof�j directly to a locai draRnage system while providing same infil#ratfon of that runoff in the process.This c�n-site BMP c4mponent must be maintained: 1} The davices that disperse runaff from the developed surfaces. D�spersRon Devices TI�e Dispersion devices used on your property inc(ude tFte foHowtng as Indicated an the site p(an tCH ECK TH E 80XES 7HAT APPLY�: ❑sp[ash 61oc[cs,Qrack pads,�lt gravel f(lted trenches,� sheet f(ow. flt(At(�TENANCE RESTRiCT[QNS The size, placement, composition, ancf downstream flow of these devices as c{eptcted 6y the site p(an and design d�taiEs must he maintained and may nat be changed without written appr4vat from th�City af Renton or through a future deve(opment permit€rQm the City af Renton. 1�4SPECTIOtSI FEtEQUEiVCY AND MA[NTENANCE fiUiQELI1VES This on-sEee BMP primary camponent must be maintairted par Appendlx A af the City of RenEon's Surface Water C�estga Manual: s, Disperston devices musfi be inspected annua![y and after major storm events to�dentify and repa'sr any phystca(defiects. �2. When native sail is exposed or erasion channels are present,the saurces of the erosion ar concentrated f[ow need ta 6e identified artd mitigated. 3. Cnncentrated flaw can be mitigated by ievel'sng the edge af the parvtous area andjor realtgnin�ar rep(enishing the rocks in the rlispersicsn device such as the gravel fi[led trenches. t'� � � � Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-6 of 13 Record Date:ll/7/2024 8:13 AM King County,WA I�Cl.29-PERF{}RATED PIPE COI�iI�ECTtt}NS�MP MAiI�TEtVANCE DEFEGT OE2 CONDIT(dN�WHEN ftESULTS�XPECTEi�WHEH COMPQNENT PROBLEM MAiNTEAiARICE IS MEEDEL) MAthlTENANCE tS PERFORMED Praventive Blocking,csbstructinas babris or frash lirniting f[flw into per�orated Ouffat(of BMP is receiving destgned f[o}us pipe system ar ouEfa]t of BMP is plugged nr fcom pe�forated pipe connection. otherwise nonfunctioning. [nficrw !nf(ow impeded Inftow tnto the perforated pipe is pattta[Iy ar Infiaw to the perForated pip�is unimpeded. fuliy blacked or aiterad to prevent flow fram gettin�into the pipe. Pipe Tranch Are� Surface compacted Graund surFace over the perfarated pi�se Ground surface over the per�orated plpe ts trencft is compacfad ar cnvered wifh n4f campacted and free of any impervious impermeahle materiat. cover. Outflow autEtaw impeded Outffow frorrt the_perforated pipe inta the {}uifiow to fhe public drainage system is pub(to drainage system is 6locked. unimp�ded. Outfaii Area Erosian ar tandst[des Existence of tfts�erforated pipe is causing Perfora4ed pipe system is seated ofE and or exasperating erosion Qr(andsiides. an atternative BMP(s lmpiemented. A°� #� c� �-, Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-7 of 13 Record Date:ll/7/2024 8:13 AM King County,WA C.2.11 PERTORATE� P�PE CO1��JECTI{JI�T Perforated pipe conneetfons are intandad to canvey concentrated runaff from itnperv�arrs surfaces {usually raof runoff}directly to a laca.i dzainage system while providing some inf�itsation of that runoff in the process.They are requued for any pipe connactian of roof downspouts to the lacal drainage systam regardless of the extent to which an�ite BMI's are required ar being used ansite.Perfarated pipe connectioz�s are intended tc�provide far some infltratian during drier periods{Iate spF•ing through eari� fall),wf�ich may help dampen th.e flashiness of sf.ream flaws zn developed areas and provide some groundwater recharge.During the wet winter months,hawever,-Chis BMP likely provides little ar no flow control benefits.There�are,it is not credited with mitigating tar�get amperviflus surface. A��(�cabEe Sur€aces Subjeet to the minimum design requirements below,the perforated pipe conneetian may be applied to concenirated rnnofffrc�m any i�ervlaus surfaee or nonnative pervious surface, Infeasibi[i�y Criteria Perforated pipe connections are considered infeasihle and ttot required for prc�jects that cannot meet the minimum design requiremenis listed belaw.This BMP is not allowed in,Zone X oftX�eAquifer.Prvtecti�n Area. �perat[on and Maintenance See Section C.2.I1.2. C.2.11.1 MINIlVI�;111�DESIGN REQUIR�MENTS Figure G2.1 I.A illustrates a gerfarated pipe connection for a typica.l single family i�eszdence.Impervious areas Iarger than 10,4{}{?square feet arid noz�native pezvious areas larger than 35,d{lQ square feet may requira Iarger pipe fio adequately canvey fia�7s aud should be designed by a�iv�1 englneer.Perforated pipe cannectiQns must be installed according tn tha fo�Iowing i•equirements: 1. Where possilsle,tha perforated pipe connec�ion must be placed an native soii to maximize infiltratian af water,wd must no�be located under i�rtper�viaus surfaces,except as a last rssart. 2. The gravel fiIled trench must be at Ieast 10-feet in length for every 5,0{l0 square feet of impervious surface ar 35,fl�0 square feet flf nonnative pervious surface from which runoff is conveyed. 3. The perforated portion c�f the system may not be placed in a critical area bufiFer or on siopes steeper than 25°la.Any proposed placement of i;he per�orated partion on slopes steeper f1�an I5°lo or within SU feet af a steep s�'ape hazeard area or lundslide huzard must bs approvad by a geotechnicrrl engzneer or engineerittg genlagist unless othet•wise appraved by CED. 4. For sites with septic systems,the parforated porti�n of tha system must be doum slape of fihe drainfield primary and reserve areas.CEI3 reviaw staff can waive this requirement if site topography - clearly prohibits subsurface#Iows fram intersecting the dra'u�field, 5. The perforated pipe cannection must nQt create flaat�ing or erosian itttpacts as detetmined by CBD. If#h�system�lischarges toward or is near a landslide hazard,erasion hazaru'ureu,steep sla�e hazard . urea,or a slope steaper than 15°l0,CED may requir�evaluatian and appraval of fhe proposal by a geotechnical e�zgitteer ar engiraeeringgealagist. 6. A mini�num of a S foot setback is requi��ed between any part of the perforated pipe trench and any pr�perty Iine. 7. The depth from the bottom of the tz•en.ch.to the seasonal l�tigh groundwater table ar impermeable layex must he at lsast one faat. {� �� 8� ��,... Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-8 of 13 Record Date:ll/7/2024 8:13 AM King County,WA �.2.1�,2 MAINTENAI�TCE Il�ISTRUCTIONS If the perfarated pipa connection nn-�ite BMP is required for a project,maintenance and operation instru.cti4ns must be recorded as an attaclunazit to the required deciaration af covenxnt and grant af easemeni:per Requirement 3 of Section C.1.3.4.The i�ltent of these insfiructions is ta explain to futctre property awners,the purpose of�he BMP and how it must be maintained and operated.These insfr-uctions are intended to be a zninimum;CED may require additic�nal instructions based on site-specifzc conditions. �`uture updates ta the insfrzzcfians wiil be p4stad an City of Renton's Sa,r�face Water➢esign ManuaZ website, A repraducible copy of the uzs�ructions,prepared far inclusion with the daclara#ion of covenant,is iacated in Reference Section 8-M. I`+IGUI�E C.2.II.A SCHEMATIC i2FPRESEI�ATIf?N�F A PERFt}RATEII PIP�C�NNECTItiN F<OR A �INGLE I`A1VIIIlY RESIDII;IY�� , FtAfifQf�N!F[LL a � 6"MIP1. , ° o 'IS"MIN� � o FILTER F'ABRIC 6"PERFORATED PiPE '(�"_�" tt�lASHED ROCK �--+�—24"NiIN.---►-� TRENCH X-SECTtON Ni"S StOPE TO ROA4 DRAINAG�SYSTEM �-2`x 1D'LEVEL TRENGH w1PERFORATED PiPE PLAN V[EW{}F ROOF' I�TS P°� � °�� Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-9 of 13 Record Date:ll/7/2024 8:13 AM King County,WA NO,38-SC3iL AMENDtViENT�MP MAEN7E@IANCE t?EFEC'f UR CflNDITIONS WHEN REStILTS EXPECTED WHEN COMPQNENT PFlOHLEM MAiNTENANGE IS[�EEDED MAINTE�iAt�CE IS PERFORME� Soit Media Unheaithy vegetat]on Vegetat(on not fulty covering ground Ptants are heaithy snd appraprlate far site surface or vegetatian hea[fh is poor. condittans Yeflowing:p�ssibEe h3itrogen{N) de�tciency.Poor growth:possibte Phosphorous(P}deficiency.PdflC flawedng,spotEing or auded teaves,or weak rflots or stems:possi6te Potassium (K}deficiency. Enadequate soil tn the falt,return Ieaf fal(and shredded Soii praviding pEant nutrients and sEructure nut�tents and woady materials from the Iandscape to the structure site when gossibie Excessive veqe#ation Grass becomes exc$ss[vety falt{greater Heatthy turf-"grasscycle"{mulch-mow ar growth thart'I0 inches);nulsance w�eds and other Ieava the alippings}to buitd turf hea(fh vegetation sEart to take over. Weeds Preventiue matntenance Avoid use of pesfi�ides{6ug and weed kil[ers},like't�resd&feed,"wtt►ch damage �he sait Fertilizer neaded Whers fettitization is needed{mainty furf Integrafied pest Management{[PM) and annuai ftawer 6eds},a maderate gratacats for fertilizatiop falfawed feckilization pragram should be used which retes on compost,nafural fertitizecs or siow-release synfhefic baianced ferti(izers Sare spoEs Bare spots on soit h!a bare spbEs,area covered with ' vegatatian ar mulch mlxed tnto the underiytng sotl. Gompacfian Poor Infiitration due to soit compactinn No soil cflmpacfion • Ta remediate compaction,asra#e soit,titl t�at least 8-lnch depth,ar further amend sait wi4h compost and re-fill • tf areas are turf,aerate compacted areas and top dress them with 1/4 to 1/2 inch of compost to renovafe them • (f drainage is stiA siow,canstder investigating atternative causes{e.g., high we#seasan groundwater Ievets, fov,�permea6illty soils) e Aiso consfdar site nse and prafection from cnm acfin activi#ies Poor irtfi[fratlon Soifs hecome waterlogged,do not appear , Faci(ity lnfittrating praperly fo be infiftrating. _ E�osionJScouring Erosion Areas of potential eroslon are visib(e Causes�f erasion(e.g.,concentra#e flaw entering area,channelizatlon of runof�j 9dentiHed and damaged area sfabi(ized {regrade,rock,vegetatian,�rosiar�c4nErol matfingj.For deep channe[s ar cuts{over 3 Inohes in panding dspth},temporaty erosian controi measures in pface unt11 permanenf repairs can be made GrassNagefafian Unheatthy vegetatian Less fhan 73°�of ptanted vegetation is Heatthy vegetation.Unhea(thy plants heatthy with a general(y good appearance. removedlreplaced.Appropriate vegstaElon planfed€n terms of expasure,soi[and solE malsture. Rioxious Weeds Noxiovs weeds Lisfed noxlous vegefation is ptesent{refer Na noxious weeds present. ta current County noxious weed tis#}. .� o� i3. Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-10 of 13 Record Date:ll/7/2024 8:13 AM King County,WA �.2.13 SOIL�T4�l�TDI��EliIT Naturally occurring{undistiubed)sc�it arad vegetation provide impoa�tant stormwatar functions znclud'zng: water infiltration;nutrient,sediment,and pollufiant adsoxption;sediment and pollutant bia�Itraisan;water interfiow storage and transmissian;and gollutant decomposition. These functions are Iargely lost whan development strips away native soil and vegetation and replaces it witYr minimal topsoii and sod,Not only are fi.hese important stQrmwater functians lost,but such Iandscapes th.amselves become paldufion ge�aeruting pervious surfaces due to increased use af pesticides,fertilizers ant�o�lier tandscaping and householdlindustrial chemica.Is,the cancentrat'ron of pet wastes,and pollntants that accompany roadside titter. Esta.blisking soit quatity and depth regains greater stormwater functions in the post development landsaape,provides increased fseatment af pollutants and sediments that result fram development and habifi.a.�on,and minimizes the need for some landscaping chemicals,-thus reducing pallution tFiro�gh preventian. A��iicahle SurFaces Esta6lishing a muzimum sail quality and depth through soil amendment is not the same as preservation of naturally occuiring soii and vegetatzon.I�owever,establishing a minimum soil quality and depth wi11 provide improved on-site management of stormurater flow and water quality. Soil organic matter can be attained through numeraus matexiais such as compast,composted woody material,biasolids,and farest praduct residuals.It is impartant that the materials used to meet ti�e so'rl quality and depth BMl'be appropria.te and beneficiai ta the plant cover to be es#ablished.Likewise,it is impartant that importsd topsoils improve soil conditions and do not have an excessive percent of clay fines. It�feasihility Griter�a Soit amendment can be considered infeasible on i�ii sail slopes greater than 33.percen�. C.2.131 1VIINI:NnUM DESIGN RE�IT][REMENTS � Sait retention.Retain,irz an undisturbed state,the duff layer and native tapsoil to the maximttm extent practicaf�le.In any areas requiring grading remove and stocicpite the duff Iayer and topsoil on site in a designated,controlled area,not adja.cent to public resaurces and crifical areas,ta be reapplied to other portions af the stte where feasibie. • Soil quality.All�xeas subject to clearing and grading thafi have no�been cove�ed by impervious surface,incorparated into a drainage facility ar engineered as strjzciural fs11 or slope shatt,at prajeat completion,demonstrate the following: l. A tapsoil Iayer with a minimum argania mat�er content of 10%dry weight in beds,and S°/a organic ma�er content in tarf areas,and a pII fram 5.0�8.fl ar matehing the pH af the _ undisturbed sozL The topsoil Iayer shalt have a minimum depth of eight inches except where tree xoots Iimit the depth of incorparation of amendments needed ta meet the crite�ia.Subsoils below the tflpsail lay�r shauld he sc�ed at Ieast 4 inches with some incorparafian af�Ize upper material to avozd stratified layers,whera feasible. 2. Muich planting beds with 2 inches of arganic materiai 3. Use campost and other materials that meet these organic content requirements: a} The organic content for"pre-approved"a.mendment rates cau be met onty usiag compost zneefiing the compost specification for Biaretention{Refet�to Sec�ian G2.6)wzfih the exception that�ti1e compost may have up ta 35°fo biosollds ar manure.The cc�mpa�t must a.tso have an arganic matter content of 40°lo tfl 65°l0,and a carban to n'rt�•ogen ratzo below ZS:I.The carban to nitrogen ratio rnay be as high as 35:1 for plantings com asad entireiy ofplants na�ive to�Ize Puget Sound Lc�wtanc�c r��or,�. �• �d` �� Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-11 of 13 Record Date:ll/7/2024 8:13 AM King County,WA � b) Calculated amendment rates may be met through use of composted material rneeiing"a}" abave;or other organic materials amended ta meat the carban to nitrogen ratio requirements, � and not exeeeding the limits identified in Table 220-B,Testing Parameters,in WAC X73-350-22{l. � 4. The resulting soil should be conducive ta the type afvegetation to be astablished. ; o Implemen#ation Options:The soil quality design guidelines listed abave can be met by using one of the methads Iisted belc�w: 1. Leava undisturbed na�ive vagetation and saii,and protect from campaction during construction. � Z. Amend exlsting site tapsail or subsoil either at default"pre-approved"rates,ar at custom calculafied rates basefl on tests af the soil and amenciment. 3. Stackpile e�sting tapsoii during grading,and replace it priaT to planting. 4. Stocicpiled tgpsoil must also be amended if needed ta meet the c�rg�nic matter or depth requuernents,either at a default"pre-apprc�ved"rate or at a custom calculated rate. 5. import topsoil miY of sufficient organic content and depth to meet the requirements. More than ane method may be used on different portions of the same sate.Soil that already meets the de�th and organzc matter quality standards,and is not campacted does n4t need tc�be amended. C.2.13.2 PLANNII�TG AND PEI7:NSI'TTING A site specific Sail Management Plan(SMP)must be apprc�ved as part of the clearing and grading ar canstrtzc�ion permit applieation. The Sail Management Plan{SMP)includes: • A scaie-drawing(l I"X 17"or larger)identifying area where native soil and vegetation wili�e ratained undisturbed,and which soil treatrnents will appTied in Iandscape areas. • A completed SMP form identifying tt�eatments and pr�ducts to Yze used to meet the sail depth and arganic content requirements for each ac�a. • Computatians af compost ar topsoil valumes to be imported(andlor site sail to be stockpiled)to meet "pre-appraved"aznendment rates;ar calculations by a qualified professional to meet organic content requuements if using custam calculated rates.Qualifietl professionals inciuds certified Agronomists, Soil Scientists,ar Crop Advisars;and Iicensed Landscapa A.rchitects, �'ivil E�gtneers t�r Gealogists. � Copies of laboratory analyses for campost and tapsoii pt�oducts to be used,doctunenting organic matter contents and carbon to nitrogen ratios. C.2.1.3.3 INSPECTIONlVER3FICAT3[flN PROCED�TRES Inspecf'ron and verification should be performed by appropriate jurisdiction inspectors<Some verificatian - may be made by supervising Landscape Arehiteets or G'ivil E�agineers,who submit szgned certifieatzon that the approved SMP had been implemented. ' The foltflwing is an 4utiine of a preferred inspectian schedule and tasks: Depending on lacal resources and procedzzres,the inspection tasks may be consolidated into fewer visits. 1. Fre-Grading Inspection • Verify delineatian and fencing of�'of native soils and vegetati�n to be teft undisturbed,per the SMP. e Review the SMP with the generaI contractar to ensure that topsail stockpiiing and other speci�ied ' measures are inoorporated into the wort�p1an. 2. Grading Progress Inspection �1J�• �� '� �'� ' : Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-12 of 13 Record Date:ll/7/2024 8:13 AM King County,WA f; 2 • Verify that praper erosion cantrol me#hods are being implemented. a Verify that excavation and stockpitiag af native soils follaws the SMP. f Verify that subgrades are consistent with fihe SMP. ; 3. Pc�st-Gonsttuction Inspection Preferably prior to planting,so that 4miss'rons can easity ba corrected: • Verify that compost,mulch,topsoil and amendment delivery tickets match v�lumes,types and sa�rxces apprc�v�d in the SMP.If mate�iats ather than those approved in the SMP were delivered, submissions by the supplier should verify that thsy are equivalent to approved praduc�s. a Check soil fflr campactiol�,scarification and amendment iilcorporation by digging at Ieast one 12-inch deep test hole per acre for turf s.nd at Ieast ane per acre for plan�ing beds.Test Ilales must be excavated using only a gardan spade driven sc�lely by inspeetar's weight. e Test I(}lr�cati�ns per Iandscaped acre{IO locations rninimum}far compactsc�n,izsing a szmple "rod penetrameter'°(a 4 foc�t Iong 3/8th inch diasneter stainless steel rod,with and a 30 degree bevel cut into the side at fihat goas in i l8 inch at the tip}.R�d must penefrate to 12"dapth driven solely hy inspect.�r's weight. � Verify placement of two inches of organic inulch rnateriai an ati planting beds. Seeoudary Verifzeatiou For FaiI�ng�i.tes: If uispector believes the insfallation does not meet the approved permit conditions,additional testing may be ordered fio determine whether remediafiion steps are required prior to fsnal occupancy and payment.An independent cansultant{Certified Soil Scientist,Crap Advisor or Agronamist;or L'zcensed Landscape Architect,G'ivil E�agr`neer ar Gealogist)shoutd canduct tke following additional sarnpling and anatysis: s Organ'rc matter content shouid be verified hy an independent soil testing seYvice,using the Loss 4n Iguitian method. • If�ecessary,the percentage af fine pat�iales{Iess than#2�t}mesh)should be conf'u�med by a certified Soil Labaratory using a wet sieve test. � At present,an analyticat metho�far verifying searif cation has na�been identified.Verification rnay bs a matter of professional opinian. C.2.13.4 MAIlVTEIYANCE INSTRU�TI(3NS Tf the soii amendment an-site BM�'is praposad for a project,maintenance and operation instructions must be recnrded as an attacf�ment to file required decIarxtian of covenan.L and grant of easemeut per Reqezireznent 3 of Sectian C.I.3.4.The intent af these insfructions is to explain#ff futcue praperty owners, the�urpose of fihe BMP and how it must be maintained and operated.These instructions ara intended to be a minitnum;CED may require adc�itic�nal ins�rnctions based gn site-s�ecific conditions.�'uture updates to the instruetzons will be posted on City of Renton's,Sa.�faee Water Design Manual wet�site. - A reproducible capy af f11e instructians,prepared for inclusian with�Yie declaratian of ccavenant,is Iocated in Reference Section 8-M. 'pg �"2. �.� 1� Instrument Number: 20241107000050 Document:COV Rec: $315.50 Page-13 of 13 Record Date:ll/7/2024 8:13 AM King County,WA s I i x�i�it � — L��'c�I L��S��'l�t%O/'I LOT 35 OF CAN�PYA PLAT COMMUIUITY,AtC�RDlNG TO THE PLAT THEREOF RECORUED!N VOLUME 3U�OF PLATS, PAGES 63-73, UNDFR RECORDiNG NUMBER ZQ2406Q7000675, RECORDS t3F KING COUNTY, WASHINGTON. SITUATE IlV CITY OF RENTON, KING C�UNTY, WASHINGTON. Page 13 of_13_