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Home My WebLink AboutRC 20200720003086 Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-1 of 13 Record Date:7/20/2020 4:32 PM Electronically Recorded King County,WA Return Address: City Cler�'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: Kathy Huynh Grantee: Citv of Renton, a Washin�ton municipal corporation L2g8I D2SC1'IptlOfl: HUYNH SHORT PLAT,LOT 3 Assessor's Tax Parcel ID#: 0423059076 IN CONSIDERATION of the approved City of Renton (check one of the following) Q Residential Building Permit �Commercial Building Permit ❑Clearing and Grading Permit ❑Civil Construction or Utility Permit for Permit(s)B20000441 (construct�on/au��dmq/ut��ty Perm�t#)relating to the real property ("Property") described above, the Grantor(s), the owner(s) in fee of that Property, hereby covenants (covenant)with the City of Renton ("City c�f Rent�n" c�r"City'), a municipal 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 PR17-000664 _�project P�an#) on file with the City of Renton and submitted to the City of Renton for the review and approval of permit(s) B20000441 (Construction/Building/Utility Permit#J.The 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 Page 1 of_ Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-2 of 13 Record Date:7/20/2020 4:32 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 Cit�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 reasanable deadline for the Owners to complete the Work, or to provide an engineers 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 and/or 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(30)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°r6)). If the City initiates legal action to enforce this agreement, the prevailing party in such action is entitled to recover reasonable litigation costs and attorne�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 landscape 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. Page 2 of_ Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-3 of 13 Record Date:7/20/2020 4:32 PM King County,WA 6. Any notice or consent required to be given or otherwise provided for by the provisions of this Agreement shall be effective upon personal delivery,or three(3)days after mailing by Certified 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 Grantorts), 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 �r�� ipi:ti�s�s��t�ceat��'t�7�i� ' _a�;��a�� e�°` .�� ' • GRANTOR,owner f t��P�'�perty � GRANTOR,owner of the Property STATE OF WASHINGTON ) COUNTY OF KING )ss. On this day personally appeared before me: ,,,m, to me known to be the individual(s) described in and who executed the within and foregoing instrument and acknowledged that they signed the same as their free and voluntary act and deed,for the uses and purposes therein stated. Given under my hand and official seal this ' day of„�„ � , 20 . ";,� - ,��"�+ .� � ��tswr�N��r��a�� . ��,�,*��Cµ��,�,� �,°�"`` ��w��s��'�"t� "�'".�� Printed name ` �"*��"��`��: � Notary Public in and forthe State of w ��"�a�aa��y��'��:�� Washington, residing at �» �'UBUG � � � � � ��1�.�+y,a�, � .,�„�� . : . . ......� . . ��"`�.�"� �`��°�""�`��,,�"��`�� My appointment expires �'"��t�'�i i��'�� Page 3 of_ Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-4 of 13 Record Date:7/20/2020 4:32 PM King County,WA EXHIBIT A - ON-SITE BMP SITE PLAN TOTAL LOT/SITE AREA(SF): PERMIT NUMBER: ADDRESS: PARCEL NUMBER: NEW/REPLACED IMPERV.AREA(SF): DISTURBED AREA(SF): ON-SITE BMP(S) USED: MAX. IMPERVIOUS SURFACE ALLOWED(SF): SOIL AMENDMENT NOTE: ALL AREA OUTSIDE OF BLDG FOOTPRINT TO HAVE AMENDED SOIL PEF C.O.F. STD PLAN #264, SEE IMPERVIOUS DRIVE APPENDIX C2. I 3 OF THE 20I 7 C.O.R. SURFACE WATER DESIGN MANUAL FOF SOIL AMENDMENT GUIDELINES. GB#7 NOTE: ROOF DRAINAGE TO BE SPLIT EQUALLY 21M: 438.53+/- BETWEEN INFILTRATION TFENCh AND DFYWELL IE: 435.39+/- �r J, GB#6(e) _ I i � — — — RIM: 438.7+/ _ � — _ �'� IE: 435.35 +/- � � - - � � �r �,� - / � "-,F' � � �/ ��ji._ �, ' ��.�'•;`;�',•'�'�.= � Q - � ��;: , , � � �� % �� .,;PERVIOUS , c_t7 � ,-� O _ � �� - � ;; =D I VEWAY•� . ��-;" , �"�:'..,�;::i' ��/ �, � � ' ":,�+/ 950sf��r. ; I � 5ftx45ftx4ft � GARAGE i ; � � //� � %� � , , . „ , ; .._ �:�„:. :,.'<;; :. INFILTRATION 'f�' %��; %% i :�:'-', ��,�� 5ftx I 6�5ft DEEP I TRENCr1 � CONC % ,� ' �_ , -� '• '.' '' "I °- ',�•• ••- ', ,.'NFILTRATION h, X �' ,., � '� � /��3,026.9 SF � �PATIO � � � ' a �• ,�� TRENCh/DRYWELL, i, i � -. � � � � � '� � � �%i,PROPOSED i I 5' 2 I/2 � �(Y� I � � YA2D � "� �/�/FOOTPRI�CONC - -- �+�'�'� � � - �� \ I DRAIN �MEF`�jPORCr1 —' �t �' I < I f� w i ,� � � . � ..._ ". ^-S r� � ' � GENCY j s��;z �/ � I � �,�\. ��OVERFLOW. �'� � � 25' � � f EMERGENCY OVERFLOW �i�g" IE: 438+/� � T� � � � � � � 8" IE: 435+/- %��i; �PROVIDE CLEANOUT � � � � i � ��%'j //PER C.O.R. STD DTL ` I O' �� F - F - '�� i�,�/i,i .� �. • ��r,-��'� � / �'��%� ' � � ESM NT � �, � — . � V � � i- �. � � �� \ �� \��- O � � _ � �� 4" PERF PIPE FTG� �, � _ � � � � � ,� � � _A_ � i�i,V �DiFAIN, TYP � � GB#4(e) — ..— , � — � � 4" D.S. _. RIM: 436+/- GB#5A(e) IE: 434.53+/- CONNECTED TO RIM: 439.0 +/- 4" SOLID PVC A � EXISTING 8'X7'X I' PIPE, TYP IE: 435. I 6 +/- � � RIPRAP PAD GB#5(e) I V RIM: 437.7 +/- IE: 435 +/- �' 10' 20' 80' Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-5 of 13 Record Date:7/20/2020 4:32 PM King County,WA MAINTENANCE INSTRUCTIONS FOR FULL INFILTRATION Your property contains an on-site BMP (best management practice) called"full infiltration,"which was installed to mitigate the stormwater quantity and quality impacts of some or all of the impervious surfaces on your property. Full infiltration is a method of soaking runoff from impervious area(such as paved areas and roofs) into the ground. If properly installed and maintained per Appendix A of the City of Renton's Surface Water Design Manual, full infiltration can inanage runoff so that a inajority of precipitation events are absorbed. In�ltration devices, such as gravel filled trenches, drywells, and ground surface depressions, facilitate this process by putting runotf in direct contact with the soil and holding the runotf long enough to soak most of it into the ground. To be successful,the soil condition around the infiltration device must be reliably able to soak water into the ground for a reasonable number of years. lnfiltration Devices The infltration devices used on your property include the following as indicated on the site plan(CHECK THE BOX(ES) THAT APPLY): �gravel filled trenches, �drywells, ❑ground surface depressions. MAINTENANCE RESTRICTIONS The size,placement, and composition of these devices as depicted by the site plan and design details must be maintained and may not be changed without written approval from the City of Renton or through a future development permit from the City of Renton. INSPECTION FREQUENCY AND MAINTENANCE GUIDELINES • Infiltration devices must be inspected annually and after maj or storm events to identify and repair any physical defects. • Maintenance and operation of the system should focus on ensuring the system's viability by preventing sediment-laden flows from entering the device. Excessive sedimentation will result in a plugged or non-functioning facility. • If the infiltration device has a catch basin, sediment accumulation must be removed on a yearly basis or more frequently if necessary. • Prolonged ponding around or atop a device may indicate a plugged facility. If the device becomes plugged,it must be replaced. • Keeping the areas that drain to infiltration devices well swept and clean will enhance the longevity of these devices. • For roofs, frequent cleaning of gutters will reduce sediment loads to these devices. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-6 of 13 Record Date:7/20/2020 4:32 PM King County,WA RECORDING REQUIREMENT These full infiltration on-site BMP maintenance and operation instructions must be recorded as an attachment to the required declaration of covenant and grant of easement per Requirement 3 of Section C.1.3.4 of the City of Renton Surface Water Design Manual. The intent of these instructions is to explain to future property owners,the purpose of the BMP and how it must be maintained and operated. These instructions are intended to be a minimum;the City of Renton may require additional instructions based on site-specific conditions. See the City of Renton's Surface Water Design Manual website for additional information and updates. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-7 of 13 Record Date:7/20/2020 4:32 PM King County,WA TYPZCAL�`LTLL INFZLTI�4TION APPLICA'I'IC}NS" . 4"RIGID OR 6" Cd SUMF'w/SOLIIJ LIIJ �ROOF DRhIN FLEXIBLE PERFORATED � ___PIPE___ __________ __________, � � , _\ i i i i i ` __- �_______________________________ _' INFILTRATION TRENCH PLAN VIEW NTS TRENCH SETBACK FROM ROOF DRAIN BUILDING AS REQUIRED, 15'MIN. OVERFLOW SPLhSH BLOCK 4"RIGID OR 6"FLEXIBLE PERFORATED PIPE �— A � �,�,��,�� — — — 7i�T��<�i��<��!<:�! — — �� — s;. i,i,i,i,i,, — � ., .. , a �'.,Yi_ _ 6 LEVEL � � 1'MIN. �Z^ t s�i WASHED ROCK 1 z"-a 1'MIN. i � � .."�._�` __ •`"� � �' 7 A � SETBACK VARIES FROM BUILDING FINE MESH 5'MIN. SECTION VIEW SCREEN �,g gUMP w/SOLIo Llo NTS �COMF'ACI tIJ dACKhILL FILTER FABRIC �'�/ „- � /VA///o � � 24" r �b_ � - 4"RIGID OR 6"FLEXIBLE � �Z^ �� - �4�� PERFORATEDPIPE FROMROOF� � A"� 1z'-q'WASHEDROCK MIN.1'ABOVE SEASONAL �� <�� HIGH GROUNDWATER �Z4 yl IABLE,SEE SECTION C222 � SECTION A crzass � NTS MNRK CFNTFR(JF H(JI F i VERFLO� ROOFDOWNSPOUT WITH1"CAPPEDPVC /��/ �'��/�� OH OTHEH MEANS �� 6••MIN. " ` \\.\�\/\/\/\"/\ OVERFLOW FIIISHWITHSIIRFNCF �\��\��/�/��/��/�� 3/4"TO 1-1/2"--�� I HOUSE �SPLASH6LOCK TOPSOIL WASHEDDRAIN ��%� "IS��MIN. - ————— �ldiJylduli�Gllih�l,lnWn d�lnli� r+iW,A�L1n ROCK %�// � _———————— ': 1'MIN. �// . ---- MIN.1'ABOVE 15'MIN.AS F�ow ——— - REQUIRED, SEASONALHIGH smw.sersncK �MiN.4•oiA. . � GROUNDWATER I Z�MIN. � SEEC22.3 FROM 6UILDING~I pVC PIPE FINE MESH SCREEN � TABLE,SEE I 481NCH DIAMETER VARIES SECTION C.2.2.2 SIDESOFHOLE� HOLEFILLEDWITH . X-SECTION CATCH BASIN LINED W ITH 1}"-3"WASHED NTS (VARDDRAIN) FILTERFABRIC DRAINROCK 15'MIN.AS REQUIRED,SEE SECTION C.2.2.3 FI LTE R STRI P MiN.r naove ses.soNn� SEE SECTIONS "��" GRASS 6.3.4&6.3.5 SECTION G�sEE sEcnoN c.zz2 � � Nrs � � - DRNEWAY OVERRO� �� / � //�//�/� I�` / /�A/�AA/�AA�AA�AA�AA• � aooF � ��A��AA�AA�AA��AA�� 6��MIN. ��AA��AA��AA��AAl�AA��AA!�AA��AA/. oownsaouT ��A��l��lV��1.��1.'�'�/'/ ��/��/��/��/�/%�ii �� !��/�j�i��/��'� House °H°""HS1N 3/4"TO 1-1/2"��j�% �raRo oaain� �`�- . WASHED DRAIN //�/// 18"MIN. � ROCK \�j/ NOTE: F�ow ��"=,; , �� SEE C223 FOR oowNsaouT �'== MIN.1'ABOVE TRENCH LENGTHS, 0 SEASONAL HIGH TRENCH SPACING AND �e'"c" GROUNDWATER 2'MIN. SITE LIMITATIONS �ts�wns Eo� TABLE,SEE PLAN VIEW SECTION C222 Nrs �--" X-SECTION NTS Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-8 of 13 Record Date:7/20/2020 4:32 PM King County,WA MAINTENANCE INSTRUCTIONS FOR LIMITED INFILTRATION Your property contains an on-sitc BMP (bcst managcmcnt practicc) callcd"li�nited infiltration,"which was installed to mitigate the stormwater quantity and quality impacts of some or all of the impervious surfaces on your property. Limited infiltration is a method of soaking runoff from impervious area(such as paved areas and roofs) into the ground. Infiltration devices, such as gravel filled trenches, drywells, and ground surface depressions, facilitate this process by putting runoff in direct contact with the soil and holding the runoff long cnough to soak most of it into thc ground. To bc succcssful,thc soil condition around thc infiltration device must be able to soak water into the ground for a reasonable number of years. This on-site BMP shall be maintained per Appendix A of the City of Renton's Surface Water Design Manual. Infiltration Devices The infiltration devices used on your property include the following as indicated on the site plan(CHECK THE BOX(ES) THAT APPLY): �gravel filled trenches, �drywells MAINTENANCE RESTRICTIONS The size,placement, and composition of these devices as depicted by the site plan and design details must be maintained and may not be changed without written approval from the City of Renton or through a future development permit from the City of Renton. INSPECTION FREQUENCY AND MAINTENANCE GUIDELINES To be successful,the soil condition around the infiltration device must be able to soak water into the ground for a reasonable number of years. • Infiltration devices must be inspected annually and after major storm events to identify and repair any physical defects. • Maintenance and operation of the system should focus on ensuring the system's viability by preventing sediment-laden flows from entering the device. Excessive sedimentation will result in a plugged or non-functioning facility. • If the infiltration device has a catch basin, sediment accumulation must be removed on a yearly basis or more frequently if necessary. • Prolonged ponding around or atop a device may indicate a plugged facility. If the device becomes plugged, it must be replaced. • Keeping the areas that drain to infiltration devices well swept and clean will enhance the longevity of these devices. • For roofs, frequent cleaning of gutters will reduce sediment loads to these devices. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-9 of 13 Record Date:7/20/2020 4:32 PM King County,WA RECORDING REQUIREMENT These limited infiltration on-site BMP maintenance and operation instructions must be recorded as an attachment to the required declaration of covenant and grant of easement per Requirement 3 of Section C.1.3.4 of the City of Renton Surface Water Design Manual.The intent of these instructions is to explain to future property owners,the purpose of the BMP and how it must be maintained and operated. These instructions are intended to be a minimum;the City of Renton may require additional instructions based on site-specific conditions. See the City of Renton's Surface Water Design Manual website for additional information and updates. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-10 of 13 Record Date:7/20/2020 4:32 PM King County,WA INFILTRATIt)N TRENCH AND llRl"�4'ELL�1'STEMS 4"RIGID OR6" CB SUMPw/SOLID LID �ROOF DR41N FLEXIBLE PERFORATED � - -PIPE--- __________ __________..� \ � __ I � _ i - � \_______________________________ __ INFILTRATION TRENCH PLAN VIEW NTS TRENCH SETBACK FROM ROOh IJKAIN BUILDING AS REQUIRED, 15'MIN. / OVERFLOW SPLASH BLOCK 4"RIGID OR 6"FLEXIBLE � PERFORATED PIPE - �i��i,�i,�i,�`i,��A _ —.%��j��j��j��j��%��j. — —`?/i;�i?/i — — 6" __________________`\ ' .,,m.�i;�,,_,.,,,____ _ _'_ 6 � LEVEL I �_ 7 1'MIN i �Z^ r t �z WASHEDROCKiz'-s �� :... � 1'MIN. �._�__ _________________. . �._�...�.. �A � SETBACK VARIES FROM dUILIJING FINE MESH 5'MIN. SECTIONVIEW SCREEN GBSUMPw/SOLIDLID NTS �COMPACTED BACKFILL FILTER FABRIC ,��/�� . �/\// ,�T ii � ,� \\ � y ; za�� ' � �� 4"RIGID OR 6"FLEXIBLE � �Z^ i � }�,tY �X *��` PERFORATED PIPE FIZOM IZOOF� �� F �_t__ 1z'-q'WASHEDROCK MIN.1'ABOVE SEASONAL �� HIGH GROUNDWATER �—Z4"— � TABLE,SEE SEGTION G.22.2 � SECTION A caass � NTS MARK CENTER OF HOLE _OVERFLO� ' �ROOFDOWNSPOUT WITH1"CAPPEDPVC � `��/��\��\� OROTHERMEANS �/��/��/��/�/�/ 6"MIN. � ' �\'�\'\\/\/\/�\�\ OVERFLOW FLUSH WITH SURFACE �\��/��/��\�/�� HOUSE �SPLASH 6LOCK TOPSOIL 3/A��TO�-�/Z��--��/�� WASHED DRAIN ��f 18"MIN. � — — — —V,1W,\�,7n11Ll,niGlrl�LLll�f ROCK %\�// � � � �W,)nLC IIiL1.Llpll� ' ——————— ' I : ��M��. /�: 15'MIN.AS " F�ow T MIN.1'ABOVE REQUIRED, } SEASONALHIGH s MIN.sETBACK � I 2'MIN. SEE C.2.2.3 �FR�MRIIIIDING~I MIN.4"DIA. GROUNDWATER Pvc PiPe TABLE,SEE FINE MESH SCREEN SECTION C.2.2.2 481NCH DIAMETER VARIES X-SECTION CATCH BASIN SIDES OF HOLE� H�LE FILLED WITH ' (VARDDRAIN) LINEDWITH 1�"-3"WASHED NTS FILTER FABRIC � DRAIN ROCK 15'MIN.AS REQUIRED,SEE SECTION C.2.2.3 FILTER STRI P MiN.rnaovesensoNn� SEE SECTIONS "�c" GRASS 6.3.4 8 6.3.5 G�sEESEcnoNczzi � � SECTION Nrs � _ DRIVE`NAY �OVERRO� �� /.////� �� /////��//��//��/i��/i��//��. � �ooF sPouT /�//�//�A�j/Q�j/Q�j/Q�jAA�jA 6"MIN. ,�AA��AA��AA��AA��AA/�AA/��Aj�AA/ � / / // own 3/4"TO 1-1/2"��f�� /i��/��, rvouse �vaeo oaairv7 � ` , WASHED DRAIN j�// 18"MIN. ROCK \�j/ � NOTE: F�ow ��'==- �� SEE C22.3 FOR oowFivsaouT '�=- MIN.1'ABOVE TRENCH LENGTHS, n SEASONAL HIGH TRENCH SPACING AND GROUNDWATER �2�MIN.- SITE LIMITATIONS _ TABLE,SEE PLAN VIEW SECTION C222 NTs — X-SECTION NTS Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-11 of 13 Record Date:7/20/2020 4:32 PM King County,WA MAINTENANCE INSTRUCTIONS FOR PERMEABLE PAVEMENT (NON-VEGETATED) Your property contains an on-site BMP (best management practice) called"perineable paveme�t," which was installed to minimize the stormwater quantity and quality impacts of some or all of the paved surfaces on your property. Permeable pavements reduce the amount of rainfall that becomes runoff by allowing water to seep through the pavement into a free-draining gravel or sand bed,where it can be infiltrated into the ground. "1'his on-site BMY shall be maintained per Appendix A of the City of Renton's Surface Water Design Manual. Permeable Pavements The type(s) of permeable pavement used on your property is (CHECK THE BOX(ES)THAT APPLY): �Porous concrete ❑ Porous asphalt �Permeable pavers ❑ Modular grid pavement MAINTENANCE RESTRICTIONS The area covered by permeable pavement as depicted by the site plan and design details must be maintaincd as permeable pavement and may not be changcd without written approval from the City of Renton or through a future development permit from the City of Renton. INSPECTION FREQUENCY AND MAINTENANCE GUIDELINES • Permeable pavements must be inspected after one major storm each year to make sure it is working properly. More frequent inspection is recommended. • Prolonged ponding or standing water on the pavement surface is a sign that the system is defective and may need to be replaced. If this occurs, contact the pavement installer or the City of Renton for further instructions. • A typical permeable pavement system has a life expectancy of approximately 25 years. To help extend the useful life of the system,the surface of the permeable pavement should be kept clean, stable and free of leaves, debris, and sediinent through regular sweeping or vacuuin sweeping. Aggregate fill in modular grid pavement may need periodic surface replenishment. • The owner is responsible for the repair of all ruts, deformation, and/or broken paving grids or pavers. • Modular grid pavement and permeable pavers filled with gravel or with gravel in the joints may need to be refilled periodically. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-12 of 13 Record Date:7/20/2020 4:32 PM King County,WA RECORDING REQUIREMENT These permeable pavement on-site BMP maintenance and operation instructions must be recorded as an attachment to the required declaration of covenant and grant of easement per Requirement 3 of Section C.1.3.4 of the City of Renton Surface Water Design Manual.The intent of these instructions is to explain to future property owners,the purpose of the BMP and how it must be maintained and operated. These instructions are intended to be a minimum;the City of Renton may require additional instructions based on site-specific conditions. See the City of Renton's Surface Water Design Manual website for additional information and updates. Instrument Number: 20200720003086 Document:COV Rec: $115.50 Page-13 of 13 Record Date:7/20/2020 4:32 PM King County,WA MAINTENANCE INSTRUCTIONS FOR SOIL AMENDMENT Your property contains an on-sitc BMP (bcst managcmcnt practicc) callcd"soil a�nend�nent,"which was installed to mitigate the stormwater quantity and quality impacts of some or all of the pervious surfaces on your property. Soil amendment is a method of regaining greater stormwater functions in the post development landscape by increasing treatment of pollutants and sediments, and minimizing the need for some landscaping chemicals. To be successful,the soil condition must be able to soak water into the ground for a rcasonablc numbcr of ycars. This on-sitc BMP shall bc maintaincd per Appcndix A of thc City of Renton's Surface Water Design Manual. MAINTENANCE RESTRICTIONS The size,placement, and composition of these devices as depicted by the site plan and design details must be maintained and may not be changed without written approval from the City of Renton or through a future development permit from the City of Renton. INSPECTION FREQUENCY AND MAINTENANCE GUIDELINES To be successful,the soil must be able to soak water into the ground for a reasonable number of years. • Return leaf fall and shredded woody materials from the landscape to the site when possible in order to replenish soil nutrients and structure. • On turf areas, "grasscycle"(mulch-mow or leave the clippings)to build turf health. • Maintain 2 to 3 inches of mulch over bare areas in landscape beds. • Re-seed bare turf areas until the vegetation fully covers the ground surface. • Avoid using pesticides (bug and weed killers)which damage the soil. • Where fertilization is needed(mainly turf and annual flower beds), a moderate fertilization program should be used which relies on compost,natural fertilizers, or slow-release synthetic balanced fertilizers. RECORDING REQUIREMENT These on-site BMP maintenance and operation instructions must be recorded as an attachment to the required declaration of covenant and grant of easement per Requirement 3 of Section C.13.4 of the City of Renton Surface Water Design Manual. The intent of these instructions is to explain to future property owners,the purpose of the BMP and how it must be maintained and operated. These instructions are intended to be a minimum; the City of Renton may require additional instructions based on site-specific conditions. See the City of Renton's Surface Water Design Manual website for additional information and updates.