HomeMy WebLinkAboutRC 20241218000811 Instrument Number: 20241218000811 Document:COV Rec: $315.50 Page-1 of 13
Record Date:12/18/2U24 4:4U 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 DRAINAGE FACILITIES AND
ON-SITE BMPS
Grantor: Century Communities of Washington, LLC, A Delaware Limited Liability Company
Grantee: Citv of Renton, a Washington municipal corporation
�ega) Description: ABBRV: LOT 31, CANOPY, VOL. 304 OF PLATS, PGS. 63-73
FULL DESCRIPTION ON EXHIBIT C
Assessor's Tax Parcel ID#: 1328710310
IN CONSIDERATION of the approved City of Renton (checkone of rnefollowing)
� Residential Building Permit ❑Commercial Building Permit
❑Clearing and Grading Permit ❑Civi) Construction or Utility Permit
for Permit(s)B23002951 (construction/euitd;nq/utilityPermit#)relatingtothe real property
("Property") described above, the Grantor(s), the owner(s) in fee of that Property, hereby
covenants (covenant) with the City of Renton ("City of Renton" or"City"), a municipa) corporation
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. Grantor(s)
hereby grants (grant), covenants (covenant), and agrees (agree) 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 CANOPYC21000838 (project
plan#) on file with the City of Renton and submitted to the City of Renton for the review and
approval of permit{s) g23002951 (Construction/euitding/UtilrtyPermit#J.Tfle
Property's drainage facilities are shown and/or 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 B—Operations and Maintenance. 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
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instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-2 of 13
Record Date:12/18/2024 4:40 PM King County,WA
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 stormwater 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 thirty (30) days' written notice to
the Owners that entry on the Property is planned for 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 facilities. In lieu of 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 condition. If the
engineer option 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, shall provide the engineer's report to
the City of Renton. If the report is not provided in a timely manner as specified above,the City
of Renton may inspect the drainage facilities without further notice.
3. If City of Renton determines from its inspection, or from an engineer's report provided in
accordance with Paragraph 2,that maintenance, repair, restoration, and/or mitigation work is
required to be done to any of the drainage facilities, City of Renton shall notify the Owners of
the specific maintenance, repair, restoration, and/or mitigation work ("Work") required
pursuant to the Renton Municipal Code. The City shall also set a reasonable deadline for the
Owners to complete the Work, or to provide an engineer's report that verifies completion of
the Work. After the deadline has passed, the Owners shall allow the City access to re-inspect
the drainage facilities unless an engineer's report has been provided verifying completion of
the Work. If the Work is not completed within the time frame set by the City, the City may
initiate an enforcement action andfor perform the Work and hereby is given access to the
Property for such purposes. Written notice will be sent to the Owners stating the City's
intention to perform such Work.This Work will not commence until at least seven (7)days after
such notice is mailed. If, within the sole discretion of the City, there exists an imminent or
present danger, the seven (7) day notice period will be waived and Work will begin
immediately.
4. The Owners shall assume all responsibility for the cost of any Work, or any measures taken by
the City to address conditions as described in Paragraph 3. Such responsibility shall include
reimbursement to the City within thirty(30j days of the receipt of the invoice for any such Work
performed. Overdue payments will require payment of interest at the maximum legal rate
allowed by RCW 19.52.020 (currently twelve percent (12%)). If the City initiates legal action to
enforce this agreement, the prevailing party in such action is entitled to recover reasonable
litigation costs and attorney's fees.
5. The Owners are required to obtain written approval from City of Renton prior to filling, piping,
cutting, or removing vegetation (except in routine (andscape maintenance) in open vegetated
stormwater facilities (such as swales, channels, ditches, ponds, etc.), or performing any
alterations or modifications to the drainage facilities referenced in this Declaration of Covenant.
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instrument Number: 20241218000811 Document:COV Rec: $315.50 Page-3 of 13
Record Date:12/18/2024 4:40 PM King County,WA
�
6. Any notice or consent required to be given or otherwise provided for by the provisions of this
A reement shall be effec iv on
t e u ersonal deliver or three 3 da s after mailin b Certified
g p p Y� � ) Y g Y
Mail, return receipt requested.
7. With regard to the matters addressed herein,this agreement constitutes the entire agreement
between the parties, and supersedes all prior discussions, negotiations, and all agreements
whatsoever whether oral or written.
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 Declaration of Covenant shall 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 County in its real property records.
IN WITNESS WHEREOF, this Declaration of Covenant for the Inspection and Maintenance of
Draina Facilities is executed this" �'+day of �t�'�'�"� �-�'� , 20 � '
�
GRANTOR, owner of the Property GRANTOR, owner of the Property
Mick Cermak, Divisron Presrdent of Century Communities of Washington, LLC
STATE OF WASHINGTON )
COUNTY OF KING )ss.
On this day personally appeared before me:
�� , )
�(`f� `�� �2�" , to me known to be the individual(s)
described in and who executed the within and foregoing instrument and acl<nowledged 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 �7�day of��� �'�-t" , 20 �`� .
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� �"s���,p�jA�4 �'��,`, `� Printed name
� %"2410��4T�= ` RJotary Public in and for the State of
r ct�',,� ���e.°,� ��p� Washington, residing at
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instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-4 of 13
Record Date:12/18/2024 4:40 PM King County,WA
EXH/B/T A -BMP PLA1V
CANOPY eONSTRUCT/ON OF/VEW S/IVGLE FAM/L YRES/DE/VCE
-SOII AAlFND�fFNT NC�TFS
— FA?LANIISCAFE�4RE,4S TNAT ARE
1JN�AtN BY AL� .S,�Nf1Y LOr�M TKF
NATJ't�AIA�RlAL Stlf�tlLt18�SCARIFlt71 Tt?A ;
DEF'TK G§�tb�1tY�±�lES NlTfffN 1Ntr Le�N�,SCAPE I N013910 E 35.00
T2"1 RLLf1W Fi,�' T t�i'fitYTN A1Y11 —
lA/P�SOt� t?RA1NAt�ARtk1N11 TR� TNF
1,4NOSC�4f''E C�YlRA� ,�1t711111� — ,._ _ _
CAUJ7tJ�lS tYOT Tt?SC�4RlFY AlA7FRlAL l l I
tX1T�'tl?E L'9� TNg LANDS'�`�A . _ � �
t�t1T�CH RfP�4''T f�?FURTI4�R 11fTAll.� I
I
— t�'A55'AN17 RE4tllR�1 LANI?SGAPlNG I I 3� I
AR£AS 5�lALL T,9JtY,4T LF9ST 1�f4?ANIJ 2,450f SF "
t,�YF—!lALF 1N�tlE.S t�LYAtlPL?.ST f�' o I 0.06 ACRE I �
lMP�'s'fF17 tt�°StI1L lftfH t7i�F T�? tf P£h't�1YT ^ � � n
Sfi�l ,4NJC,NATTI£� C TENT.
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—F.a17S7JNG t,YAY t�SAN11Y S�L5 'o I f0'PRII/,QTE I I �
LAN!?S�',4PYNC 1S Tt7 BE 1NSTALLfI? SNALL � o ,� O R A/N A�E I c
,�UG�tENJE�7 iflTt�AN ANlG SllPPLEAlENT. � I EASEMENT l q
PERFQRATED P/PE ` ' , _ . LL �
CONNfC110N PER C/TY � I
�RENTON SURFACE �
W,47FR DESl�iV MANUAL, � � �
F/CURE C.2.1>.A — —
— — — — ,
0
° d iV013910�E 35.00°
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10'PUBUC AND
PR/�ATE UT/UTY
£ASEMEA/T
ABE EED ,4 Y E
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SCALE 1"= 20'
PAGE 4 OF 13
^ BUI�DER: CENTURY COMMUN/TIES
L OT 31 �
COI��� CIVILENGINEER�NG DATE 5/31/24 PARCEL NO.: 132g71O310
LANDSCAPE ARCHITEGTURE
VLANN�NG
���esicN SURVEYING DESIGNED CORE ADDRESS 9010A9ERDEENlYAYA�E
CANOPYiziooNcrssii�s�,s�;«soo oo��,Qu,w�,ti;,�y��,�aoori nzsaas�an Pf���ECT NUMBEf�
DRAWN CAF 18054
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-5 of 13
Record Date:12/18/2024 4:40 PM King County,WA
EXHIB[T �- C3PERATIt)(VS AND MAINTENANCE
NtAI[tITENANCE [f�1STRU�TIt�NS FC)R PERFORATEQ FIPE CONNECTION
Your praperty contains an on-sifie BMR{besfi management practice}called"perforated pipe cannections,"
which was installed ta mitigate ihe stormwater quantity and quality impacts of some ar all afi the impervious
surfaces or non-native perviaus surfaces on your property.
Rerf�rated pipe connections are intended to conuey concentrated runoff frr�m imp�rvious surfaces
(usuaCly roof runoifj directly to a local drainage system whi(e praviding sc�me infiltration of that runoff in
the process.This on-site BlV1P cc�mponent must be maintained:
1} The devices that disperse runoff from the developed surfaces.
Dispersion Devices
The Disparsion deufces used on your property�nclude Che following as indicated an the site p[an
�CHECK TNE BOXES THAT APPLY};
❑sp[ash b�ocles,Qrock pads,�lt gravel fiilled trenches,0 sheet flow.
MAINT�NANCE RESTRICTIQNS
The size, plaeement, c�mpositian, and downstream flow af these devices as depicted �y the slte plan
�nd design details must b�maintained and may not be changed withaut written approval from the City of
Renton or through a future development permit froret the City of f�enton.
[NSPEGT[Ol�FREQUENCY AND MA[NTENAIVCE GUIQELINES
This an-site 6MP primary component must be maintained per Appendix A of the Cifiy of Renton's Surface Water Desfgn Manual:
i, Dispersion devices must be inspected anttuafly and after major storm events tc�identify and repair�ny
physical defects.
z. When native sail is�xposed�r erasion channels are present,the sources af the erasion or
cancentrated ffaw need to be identified attd mifiigated.
3. Cancentrated flow can be mitig�ted by Ieveling the edge ofthe perviaus area and/or realigning ar
replenishing the rocks in the dispersion device such as the gravef filled trenches.
P9 � � �'
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-6 of 13
Record Date:12/18/2024 4:40 PM King County,WA
ht0.29-P'ERFt3F�ATEC►PiP"E�f3NNECTIC3NS�MP
MRtNTENANGE DEFECT OF2 Ct'�hIDIT[QNS WHEN RESU�TS�XPECTEb WHEN
COMP�I�ENT PRO�LEM lUTAfNT"ENANCE[S NEEQEQ MAIHTEhlANeE IS PEFiFORMEb
Preventive 8locking,obstructions Uebris ar trash lirniting fl�w into perforated Outfall of HMP is rece(ving designed flows
pipe system or ouEFal(of BMP is p{ugged or from perfarated pipe connectian.
otherwise nonfunctianfng.
[nftaw lnflow impeded Inflow into the�ae�orated pipe is parti�lCy or [nf(aw to the perforated pipe is unimpedad.
fully bloc[ced or a{tered to prev�nt flow from
gettiRg into the pipe.
Plpe Trench Area Surface compacted Ground surtace over the perForated pipe Ground surface ouar tha pertorated pipe is
#rench is compacted or covered with n�t compacted and free of any(mpenriaus
impermeahls material. cover.
Clutflow c'lutflow impeded Qutflaw frdm the perforat�d pipe into the OutFiaw ta fhe�ublic drainage system is
pukrlic drainage system is I�foctced. unimpeded.
Oukfal[Area Erosion or fandslides GxisEence of tha perfa€-ate8 pipe is causing Perfarated pipe sysEern is sealed oif and
or�xasperating er4sion or Iandslides. an alternative BMP is implemented.
Pg �' � �
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-7 of 13
Record Date:12/18/2024 4:40 PM King County,WA
C.2.11 PERF`C�I�.ATEA PIPE Ct7NNECTI4N
Perfor�rte��ape cr�n�rectzons are intended to canvey concentrated re�noff from rm,�ervrous surfaces
(usualiy roof runof�f)directiy tn a loc�l ci�ainage system while providing same infiltration of that runoff in
the process.They ar�requ'rred for any pipe corinectian of roof�awnspouts to the local drainage system
r�garciless of the ext�nt to which on-site 7331t2Ps are required ar bein.g used onsite.PerfQrated pipe
canrtectia��s are intendeci to provide fcrr some infiltratian during drier periods{Iate s�ring through early
falt),which m�y help dampen the�ashiness of stiream�lows in developed areas and provide same
graundwater recharge.During the wet winter months,however,this BMP likely provides little or no flow
cQntral benefits.Therefe�re,it is�ot credzted witlz mitigating target ztrtpervious surfaee.
ApplEcabte SurFac�s
�ubja�t to ttle minimum design t�equ'rrements helow,the perfbrated pipe c�nnection may be applied fo
conc�nteated runoff from any i�zpe�viaus surface ar nonnative pervious surface,
lnfeasibi[i�y Cri�eria
P�rforated pi�ae cor�nectzons are conszdered infeasible and not required for projects that cannot nzeet the
muurntun design rec�uu'rrremer�ts listed.belcaw.This BMP is not all�wed in Zone 1 nf t�2e�lquzfer 1'rofection
Ar�a.
Clperation and Maint��ance
See Section C.2.I 1.2.
C.2.11.1 MINIIVIUM I�E�IG1Y REQUIREMENTS
Figure C.2.11.A illustrates a perfarat�d pipe ccsnnectian for a typical single family�•esidence.Impervious
areas larger thaii 10,Q04 square feet and nonnative pervious areas larger than 35,4U0 squ�re feet may
require Iarger pipe to adequately�ouvey flows and shcauld be desigued by a ciu�it engitaeer.Perforated pipe
connections n�ust ba installed according to�ie follawing requirements:
1. Where possible,ih�perfc�rat�d pipe cormectiori�iust be�aIaced in native soil to ni�imize inf'�ltration
of water,azxd must�ot be located under f�erviot�s srirfc�ces,excapt as a Iast reso��t.
2. The gravel fiIleci trench ttiusC be at leasl 10-feet in let�gth fur every 5,000 squa�•e feet of irrtpervious
surface or 35,OQ0 square feet of nonnativ�pervious surface fram which runoff is conveyed.
3. The perforated pot�tion of the system may n�at be placed in a critical area l�uffer c�r an slc�pes steepet�
tlian 25%.Any pz�aposed placement of fhe per�'orated portion c�n slcap�s steepez•ihan IS°lo or within
50 feet af a steep slnpe hazard rzrea or lunrlslide hazard must be approved l�y a geotechnical engineer
ar er�ginseriEag geolr�gist unless vtherwise appraved by GED.
4. �`c�r sites with septic systems,th�perforated p�rtin�a of the system must be down slope of the
rirainfteltl primary and reserve areas,CED review staff can waive this requirement if sxte tapography
clearly prohib'rts subsurface flows from intersecting the drairrfield.
5. The perforated pipe cc�nnection tnust not create flaca�ing or erosion itnpa�ts as detec•znined tay CED.
If the system discharges towaz•d or is near a la,�dslide hazard,eroszon kazarct area,steep slope hazar�l
area,or a slapa steeper than 1S°lo,CEll may require evaluation and appraval af fihe prnpasal by a
geotecFirticul engir�eer ar e`�gGt�eering geaXogisf.
6. A rninimum of'a 5 foot setback is requiz�ed between any par�of the perforated pipe trench and any
prUperty Jiiie,
�. The depth from the[�ottom of fihe trench to the saasanal tligh graundwatei•table or impe�•rneable layer
must be at teast one f€�ot.
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Instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-8 of 13
Record Date:]2/]8/2024 4:40 PM King County,WA
�.2.I1,2 MAINTENANCE INSTI2UCTIONS
If the perfarated pi�ae connection on-site I3MP is required for a praject,maintenance and operation
instructians must be recorded as an attachment ta the requireci declaration of covenani and grant af
easement per Requirernent 3 of Section C.1.3.4.The intent ofthese instructions is t�explain to future
prc�perky owt�ecs,the purpc�se of tl�e BMI'and how it niust he n�aintained and��erated.Tl�ese instructions
are intended to be a minirnum;CED inay require additinnal instrueiions based on site-speoific conditians.
�uture updates to the instructions will be posted on Ciry of Renton's Su�face Wate�17esign Manual
websita.
A re�roducible copy ofthe nistructia�s?p�•epar�d for inclusion�vith the declaration of covenant,is Iacated
in Refeeence Section�-M.
FIGiTRE C.2.II.A �CHEMATIC REPR�SENTATII�N OF A PERI'C?RAT�D PIPE C(JNI'�ECTION FtJR A
SINGLE I'AMC�Y RESIDENCE
. RACVDdM FILL
� 6��MIN. o ' o � `'�----
't8"MIN�� v q `—FILTER FA�RfC
I
8"PERFORATED PiPE
't 2"-�" WASHED ROCK
I--^�—24"MIN.---►-�
TR�NCH X-SECTIOR[
NTS
SLOPE �
TO RQAD
DRAIiVAGE SYSTEM
�Z'x 10'LEVEL TREfVCH
w/PERFQF�ATED PIPE
PLAN VIEW UF ROOF
Ili --
� NTS
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instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-9 of 13
Record Date:12/18/2024 4:40 PM King County,WA
NO.38—SU(L AMENDMECVT BMP
MAEN7ENA�lC� L3EFECT OF2 CQNpIT[ONS WC�IEN I�ESULTS EXPECTED WHEN
CQMPUNENT PR08LEM MAINTENAN�E lS KEBDED MAIRITENANCE IS PERFORMED
Sdi[Media Unhealthy v�getation Vegetation noE fu[ly covering grflund Plants are healthy and apprrapriate for siEa
surfac�oe vegetation health is poor. conditions
Yellawing:possi6(e Nitrogen{PV}
deficiancy.Poor growth:possible
Phosphc�rous{p)deficiency.Poor
flawering,spotting or curfed leaves,ar
weak roofs or stems:possib[e F'otassiurn
{K)deficiency.
lnaHequate soii tn the falC,return leaf fall and shr�dded Snfl praviding plartt nutrients and structure
nutrients and woody materials fram the Iandscape to the
structure site when passib[e
Excessiue v�getaEinn �r�ss becomes excessively#aIC{greater Heatthy turf-"grasscycle"(muich-mow ar
growth than 1 d inches); nuisance we�ds attd other (eave fhe c[ippings)to bui[d tu�f health
vagetatian start to take dver.
Weeds Freventive maintenance Avoid use of pesticides(hug and weed
kil(ers},like"weed�feed,°which damage
the soil
Ferti(izer needed Where fcrti[ization is needed(mafnty f�rf Integrated Pest Managemont([PM}
artd annuat flower beds),a moderate protocols for fertilization fol(owed
fertilizatian prngram shauld be used which
relies on cQmpost,natural fertilizers or
s(ow-rel�ase synEhetic ba[anced f�rtilizers
Bare spoks Qare spots on soil No bare spots,area covered with
' v�getation or mulch mixed into#he
underlying s�ii.
Campaction Po�r infltration due to soil compaotion No sail compaction
� To r�mediate campaction,aerate
soii,tiU to at I�ast 8-inch depth,or
furEher amend soil with compos#and
r�-till
• If areas aee turF,aerate comp�ctad
areas and tap dress them with 1!4 ta
1l2 inch of compost tn renovate them
• ff drainage is sti[I slow,consider
investigafing alternative causes(e.g.,
high we#sesson groundwater tevels,
(ow permeatail(ty soils)
• Also cnnsider site use and profection
from com �ctin aotivities
Poor infiltration Sni(s 6ecome,wsterlogged,de�not appear Facility infiftrafing properly
to 6e infiltrating.
ErosioNScouring Erosion Areas of potential er+�s(an are visibfe Gauses of erosion(e.g.,concentrate flow
entering area,channe�ization of runof�
id�ntified and damaged area sfabilized
(regrade,rack,vegetatian,arnsion control
matting}.For deep chnnne[s or cuts(over 3
inches in ponding depthj,Eemporary
erosion control measur�s in place unkil
permanent repairs can be made
GrassNegetation Unhealthy vegetatlon Less than 75°!p of planted vegetatian is Ha�[thy vegetation.Unhealthy p(ants
hsalthy with a generaliy goad app�arance. removedtreplaced.Appropriate vegetation
ptanted in terms of�xposur�,soil and soil
maisture.
Rioxiaus Weeds Noxious weeds Listed noxious vegetation is prasent(refer No noxious weeds present.
t4 current Caunty n4xiaus weed[ist}.
_ ,� o'� 0�
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-10 of 13
Record Date:12/18/2024 4:40 PM King County,WA
C,�,13 SO►IL AIVIENDMEI'�T
Natczrally accut�ring(undistarbed)sail az�d vegetation provide irnpoi�tant stormwater functions including;
water infirtratian;nntri�nt,scdiment,and pollutant ads�rption;sediment and pollutant biafiitration;water
inter�lc�w st��age and tr.ansmissic�n;and pc�llutant decamposit'ran.
Tliese fitnctians are largely lost when dev�lopment strips away na.tive soil and vegetation and replaces it
with minimal tapstiil and sod,Not onty are fhese impnrtant sformwater funcfions lost,but such lan�iscapes
themselves becorn�paltutian geraeratir���era�a�us surfaces due to increased use of pesticides,fertilizers
�nd other Iandscaping and hauseholdlindustrial chemic�ls,the cancentration of pet wastes,and pollutants
that a�company roadside litt�r.
Esta6lishing soil c�u�lity and deptt�regains greater stormwafer functio�s in the post dev�Iopment
landscape,pravides increased tre�tment of pollutants and sediments that result fram developnlent and
habitaticrn,and minimizes i:he i�eecl ft�r sume lanciscapin�chemicals,thus reducirig poliution through
preve�ztion.
A�apticable Surfaces
Estabtishing a minimum soil quality and depth through sc�il amendinent is not the sasne a.�preservatian af
rl�turally occuzring sail ancl vegetatiori.Hcswever,estat�lislung a�ciiniitiva�soil quatity azid depth will
pravrd�improved an-site managernent af stormwater flocv ai�d water quality.
Soil�z•galuc matter can Ue attained tY�rougli numerous materiats such as compast,composted woody
material,b'rosalids,and f�rest product rasiduals,It is important that the materials nsed to meet the soil
quality and depth BMP be appropriate and beneficial to the pla.nt cover to be established.Likewise,it is
important that imported topsoils iinprove soil conditions and do not Ilave an excessive peccent of clay
fin�s.
Inf�asibilifiy Cri�eria
SQiI axnendment can be considered infeasible on till sc�il slopes greater than 33 parcent.
C.2.13.1 MINIMtifM DESIGN REQUIREMENTS
• Sai[retention.Retain,in an undistur�aed state,the duff layer and native tapsoil to the maximui�tl extent
�raciical�le.Iir any areas requiring grading remove and stackpile the duff Iayer and t�psoil on site in a
designated,contralled araa,not�djacent to public resources and critical areasa to be r�applied t�ather
portions of th�site where feasible.
� Soi1 quality.All areas subject ta cleari�zg and grading tk�at liave not been coverecl by impervious
surfaee,inco��porated intt�a drainag�facility or engineered as structaral filt or slope shall,at project
completiQn,demonstrate the fallowing:
1. .�tops�il layer with a minimum arganic matter content of 10%dry weight in t�eds,and S°fo
c��ganic matter cc�ntent in turf areas,and a pH from 6.0 te��.{l or matching the pH r�f the
undisturbed s�il.The tapsoii Iayer sha11 tiave a zninimum depth of eight inclies except where t�•ee
roots limit the depth of incarporation af arnendments needad ta meet the criteri�.SubsoiLs betow
the topsoii layer should 6e s�arifed at least 4 inches vvith sc�me incorptira�ian af tl�e upper
niaterial to avoid st�ati�ed lay�z•s,whez•e feasil�le.
2. Mulch planting beds w'rth Z inGhes of�rgani�material
3. L1se compost and trther materials that meet these organic content requirements:
a� The organic content for"pre-approved"asn�ntlmetit rates can b�met�rily usilig compost
rrieeting the compost specificatio�for Bioretentioa(Refer ta Sectic�n C.2.6)with the
exGeption that the cflmpost may have up to 35°la biosolids or manure.The compost must also
liave a�i organic matter content of 40°lo to 65°fo,and a c�crboiz to nitrogen ratia below�5:1. The
carbon to nitrogen ratio rnay be as high as 35:1 fo�I(tingsfia��osed entirely of plants
native to tl�e Puget Sound Lowlanrt��e�ic�r�- �] � e
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-11 of 13
Record Date:12/18/2024 4:40 PM King County,WA
1�) Calculated amendment rat�s may be met thraugh use af compasted material meetin�"a}"
above;ar othez•organic matexials amended to meet the carbon to ni�rogen ra�io requirements,
and��at exceeding the limits ideiltifed in Table�20-8,T�sting Par�meters,in
WAC 1'73-350-220.
4. TIZe resultizlg soil should be canducive to the type ofvegetatian to Ue established.
a Implementation O�tions:The sail quality design guidelines listed abave can be met by using one of
the methods listed belc�w:
1. Leav�undisturbed n�.tive vegetatza�and soi(,and pratect frorn com��actian dut�iflg canst.ruction.
2. Amand exisCing site topsoil or subsoil either at default"pre-approved"rates,nr at custom
calculatec�.rates 6ased on tests of the soil and amendmant.
3. Stc�c�pile existii�b tapsUil dut•ing grading,and replace it priar to plantin�.
4. Stc�clepiled ta�so'rl must alsa be amended if needed to meet the organic matter ar depth
requir�ments,�itYier at a clefault i`pre-approvecl"rate or at a custc�m ca(culaled rate,
5. Impart to�rs�il ini�raf sx�ffici�nt organic content and depth to meet the requirements.
Mor�than o�e method m1y be usec�on di�ferent portions afthe same,�ite. Soil that aiready rneets the
depth and arg�nzc rnatt�r quality stant�ards,and is not compacted does not need ta be amended.
C.2.13.2 PLANNI�IG ANI) P�RMITTING
A site specific Soil 1V[anagement Plan(SMP)must be approved as part of the clearing and grading ar
constructit�n permit applivatiUn.
The Soil Man�gerne�zt PIan{SMP)includes:
• A scale-drawing{11"X 17"or rarger)identifying area whera native soil and vegetation wi11 be
retained undisturb�d,and which soil treatments will applied in landscape areas.
# A completed Sl\2P form identifying treatmenfis and prc�ducts to be used ta meet the soil depth and
organie enntent r�quirements for each area.
• ��mpui:�.lions af coxnpast or tc�psail valuizies to b�ir�zpoz�tecl(�z�d/or site soil to be stockpiled)to m�:�t
"pr�-approved"amendment rates,ar calculatians by a qualified peofessional to meet organic cc�ntent
requuements if using custam calculated rat�s.Quatified professionals iriclude certified Agranomists,
Soil Scientists ar Crop Advisnrs; and licensad Landscape Architects, Civil E�gineers or Geologiats.
* Copies af laboratory analyses far cr�mpost a�id topsoil products to be used,dacum�nting organic
matter contents and�carbon to nitrogen ratios.
C.2.13.3 INSPE�TIONf VERIFICATION PRCICEI.�URES
Insp�ctian and verification should tae performed tay appropriate jut•isdiction inspectors. Some verification
may be made by supervising Landscape Archztects or�'ivzl.Engineers,wha submit szgned eertificataon
that the a�proved STvSI'had been impl�mented.
- Th�following is an autline of a preferred inspe�tion sohedule and tasks:
Uepending on local resources aczd procedures,the inspectiQn tasks may�ie consolidated into fewer visiCse
1. Pre-Grading Inspectian
� Verify delineaCion and fencing off of native soils at�d vegetation ta be left undisturbed,per the
SMP.
+ Rev"tew tl�e SMMF"with the g�nerai contractor ta ensure th�t topsait stockpilin�;and aiher specifieel
measL�r�s�re incarporated into the wc�z�k plan.
2. Grading Fragress Inspectian ��• �� � � �'� '
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-12 of 13
Record Date:12/18/2024 4:40 PM King County,WA
• Verify that proper crnsic�n control methods are being implemented.
• Verify�iat excavation and stockpilin�af n�tive soils follaws the SMP.
� Verify that subg�ades are consistent with the SMF,
3. �'ost-Const:t�uction Inspection
Yreferably priar ta planting,so that ornissions eat�easily be coerected:
• Verify tliat c;omperst,lnulch, topscail and aniendnianL delivery t�ck�[s maicli volunies,types and
sourc�s approv�d in the SMF'.If materials other than those approved in the�MP were delivered,
submissions hy the supplier should verify that they are equivaient to appraved products.
• Clieck sail fos�cornpacti�n,scariticatton anci amendment inc�rporatian lly digging at Ieast one
12-inch deep test hole per acre for turf and�t Ieast one per acre far planting beds.Test I�ale�must
ba excavated using a��ly a gat�den spade driven salely by inspector's weight.
+� Test 10 loc;atic�r�s p�c•I�rzclsc�ped acc�e(10 loca[iozzs xzlinimum�fc�r eanipactian, using a siznple
"rocl penetrometer"�a 4 foot lang 3/�th inch diametex stainless sfieel rod,with and a 30 degree
bavel cut'rrito tlle side at ttlat goes in 1/8 inch at the tip).Rad must penefirate tc� 12"depth driven
solely by inspeetct�'s wai�ht.
s Verify placement aftwo iizches of organic rnulch�natarial on a1I plaz7ting be�s.
Second�ry V�z•ification Foz•I"aiiiug�ites:
If uispectot•helieves�ie instaltat�on daes not rneet th�appraved permit cr�nditions,additional testing
xn�.y E�e carclei°ed to determine whether i°ezclecliatian st�ps are rer�uired pt�ior lo final�ccupancy a.nd
payment.An independent cansultant(Certified Sai1 Scientzst,Crop Advisar ar Agronomist;or
I..icensed Landscape Ar�hite�.t, G'ivil�"ngrneer or GeQlogist)should conduct the fallcrwing additional
sanlpiing�.nd analysis:
+ Ctrganic mattet content should b�ver'rfied by an mdependent soii testin�ser�vice,usi�zg the Loss
C3TI�gl11t14Tt 211�tY14d.
• If izecessary,1�ie percentage�lfine�at�:icles(less thata#2Q0 z��esh)slaouEd be confirmed by�
Gertified Soil Laboratory using a wet sieve test.
• Af�t�esent,an analyticai method fo�•verifying scarification has nof,been identitied.Verifieation
�iay be a�natter crf pr•c�fessional c�pitiion.
C`.2.13.4 MAINTEI�ANCE IIYSTRUCTIONS
Tf tlze soil ariiendment arc-site BMP is prapos�d for a project,maintenance�nd�p�ration insteuctions must
be recarded as an attaclzment to�IZe reqtured declarafion of covenant and graut of easement per
Requiremenfi 3 af Section C.1.3.4.'I'he intent af fihese znst�-uctions is to explain ta future prap�rry cawners,
the pu�pose of the BMP and haw it must be maintained and operated.These inst�;uctions are intended ta be
a rninirnum;CED may requ.ire additic�nal instruct'rc�ns hased an site-specific cnnciitians.Future updates to
the ir�structions witl be pc�steci on Gity af Renton's,Suv�face Wttt�r Design.Maraual website.
A reprodL�cible copy af the instructions,prepared£o�inc[usion with tE�e declarat'ron of cnvenant, is loc�ted
in F�eference Section 8-M.
�� i� �� I�
instrument Number: 20241218000811 Document:COV Rec: �315.50 Page-13 of 13
Record Date:12/18/2024 4:40 PM King County,WA
Exhibit C — Lega/ Description
LOT 31 OF CANOPYA PLAT COMMUNtTY,ACCORDINC, TO THE PLAT THEREOF
RECORDED IN VOLUME 3Q4 OF Pl.4T5, PAGES 63-73, UNDER RECORDING NUMBER
20240607000675, RECOROS OF KING COUNTY, WASHINGTON. SITUATE lN CITY OF
RE/VTON, KlNG COUNTY, WASHINGTON.
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