HomeMy WebLinkAbout2025 - Declaration of Covenant for Inspection and Maintenance of Stormwater Facilities and BMPS - Cary Lang Construction - 20250924000387Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -I of 19
Record Datc:9/24/2025 10:51 AM
Electronically Recorded King County, WA
After Recording Return to:
City Clerk
City of Tukwila
6200 Southoenter Boulevard
Tukwila, WA 98188
DOCUMENT TITLE:
Declaration of Covenant for Inspection and Maintenance of
Stormwater Facilities and BMPS
REFERENCE NUMBER(S) OF RELATED
DOCUMENTS:
Additional reference numbers at page 2 of document,
GRANTOR:
CARR LANG CONSTRUCTION, INC.
GRANTEE; City of Tukwila, a Washington Municipal Corporation
ABBREVIATED LEGAL DESCRIPTION: HILLMANS MEADOW GARDENS DIV # I
Plat Block* 2, Plat Lot. 88
Full legal on page 5 of aocoment,
KING COUNTY TAX PARCEL NUMBER:
1 3347400470
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -2 of 19
Record Datc:912412025 10:51 AM King County, WA
10 Ell 1019 X&EXIM OKI) W1 1-0) tm LMN-V 01 WIV911915-01111 I
1. Parties
1.1 This Covenant for Inspection and Maintenance of Stormwater Facilities and Best
Management Practices ("Covenant") is made by and between [property owner(s)], as Grantor, and the City of
Tukwila, a Washington Municipal Corporation, as Grantee. Grantor and Grantee (also denoted as City herein)
are each a Party and collectively the Parties to this Agreement.
11 Grantor applied to City for issuance of _D24-0159 on 711512-025 —
2,2 Pursuant toTMC 14.30,060, application for and issuance of such permit requires the property
owner to enter into this Covenant.
2.3 The subject of the Covenant is the real property located in King County, Washington, bearing
King County Tax Parcel No. 3�4Z4o.Qand legally described in the attached Exhibit A
incorporated herein C'Property").
2.4 The City approved the applications which consist of the following documents, attached and
incorporated herein:
2.4.1 City issued Permit No. D24-0159 , Exhibit B.
2.4.2 Stormwater Facility/BMP Site Plan, Exhibit C.
2.4.3 Operations & Maintenance Plan including schedule, Exhibit D.
3. Terms of Agreement
NOW TBEREFORE, in consideration of the foregoing recitals and other good and valuable
consideration including approval and issuance of City of Tukwila Permit (number and date), the sufficiency
and receipt of which are acknowledged, Grantor hereby irrevocably covenants as follows:
3.1 The foregoing Recitals and references to documents are incorporated as material terms of this
Covenant .
3.2 The Grantor(s) for itself and its successors in interest having any ownership interest in the
Property (collectively Owners) shall at their sole cost and expense retain, uphold, operate, maintain, and repair
the stormwater facilities and best management practices ("BMPs") located on the Property pursuant to the
schedule within the Operations & Maintenance Plan.
33 The obligations required under Section 3.2 above shall be taken consistent the following:
3.11 The City shall have the right of ingress and egress over those portions of the Property
necessary to perform inspections of the storrawater facilities and BMPs and conduct other activities specified
in this Declaration of Covenant and in accordance with Tukwila Municipal Code ("TY[C") 14.30,80, This
right of ingress and egress, right to inspect, and right to perform required maintenance or repair shall be as
provided for in subsection 3.3.2 below.
City of Tukwila
Stormwater Maintenance
Declaration of Covenant
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -3 of 19
Record Datc:912412025 10:51 AM King County, WA
3.3.2 If the City determines that maintenance or repair work is required to be done to any
of the stormwater facilities or BMPs, the Director of Public Works or designee (the "Director") shall give
notice of the specific maintenance and/or repair work required pursuant to TMC 14.30,080. The Director shall
also set a reasonable time in which such work is to be completed by the Owner. If the above required
maintenance or repair is not completed within the time set by the Director, the City may perform the required
maintenance or repair, and is hereby granted access to the Property for such purposes. Written notice will be
mailed to the Owner 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 Director, there exists an
imminent or present danger, the seven (7) day notice period will be waived and maintenance and/or repair
work will begin immediately.
3.4 If at any time the City reasonably determines that a stormwater facility or BMP on the
Property presents an imminent hazard, as identified byTMC 14.30.080 and herein incorporated by reference,
the Director or equivalent municipal successor's official may take measures specified therein.
15 The Owner shall assume all responsibility for the cost of any maintenance or repair work
completed by the City as described in Covenant. 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 current legal rate as liquidated damages. All such costs and expense shall
constitute a lien against the Property.
3.6 The Owners shall obtain a Type C Public Works permit from the City prior to filling, piping,
cutting, or removing vegetation (except in routine landscape maintenance such as replacement of plants and
pretreatment mulch) in open vegetated stormwater facilities (such as swales, channels, ditches, ponds, etc.),
or performing any alterations or modifications to the stormwater facilities and BMPs referenced in this
Covenant, Prior to the final approval and issuance of the new permit, a new Covenant with updated exhibits
reflecting the changes to the stormwater facilities shall be recorded at the Owner's sole cost, and a copy of the
new recorded Declaration of Covenant provided to the City.
33 Any notice or consent required to be given or otherwise provided for by the provisions of this
Declaration of Covenant shall be effective upon personal delivery, or three (3) days after mailing by Certified
Mail, return receipt requested, to the address listed below for that party:
To Grantee: io—Qr—an—ton
City Clerk CARY LANG CONSTRUCTION
City of Tukwila 29815 24th Ave SW
6200 Southcenter Blvd, Federal Way, WA 98023
Tukwila, WA 98188
3.8 With regard to the matters addressed herein, this Covenant constitutes the entire agreement
between the parties, and supersedes all prior discussions, negotiations, and all agreements whatsoever whether
oral or written. This Covenant shall, be governed by the laws of the State of Washington. Any suit to enforce
or relating to this Covenant shall only be filed in King County Superior Court, King County, Washington, and
the rarticu vonovia to t;hVjurtacl1QUun thin cut. In this vy%m of any legal avtivn by uFftlivr fart), xviating, to ttiio
Covenant, the Parties shall pay their own costs or fees.
City of Tukwila
Stormwater Maintenance
Declaration of Covenant
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -4 of 19
Record Datc:912412025 10:51 AM King County, WA
19 This Covenant is intended to protect the value and desirability of the real property described
in Exhibit A, promote the efficient and effective management of stormwater drainage, and shall inure to the
benefit of all the citizens of the City and its municipal successors and assigns. References herein to the TMC
shall include subsequent amendments to such statutes and all successor statutes.
110 This Covenant shall run with the land and shall be binding upon the Owners as defined in
Section 3.2 above.
3.11 This Covenant may be amended or terminated only with the advance express written consent
of the City as determined pursuant to its discretion.
EXECUTED AND EFFECTIVE as of the date last signed below.
GARYLANG
Owner
DATE: e`09 112—
City of Tukwila
Stormwater Maintenance
Declaration of Covenant
FOR GRANTEE:
City of Tukwila
ne riti
Public Works Director
DATE --
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -5 of 19
Record Datc:912412025 10:51 AM King County, WA
STATE OF WASHINGTON
COUNTY OF KING
I certify that I know car have satisfactory evidence that CAr Leta is the person who appeared
before me, and said person acknowledged that sgesigned this instrunhIn on Ohalf of the t,(,keo
and acknowledged it to be her/bis free and voluntary art for the uses and purposes merftioneWin this
RMMAMM
GIVEN UNDER MY 14AND AND
� M Po f i /fit
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101609
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STATE NGTON
[Cowfty"IM-42
SEAL this e day of
Printed Name
NOTARY PUBLIC:-7iu, �dfbr e State of Washington,
residing at_
My Co missy 214h ptresct—=--/—
ss.
On this day �rsqnally appeared before me J<tjgX to me known to be the
V-6-Iff e--1"4 �Nxi� of the Crry OF TVK�JVLA, a municipal corporation and noncharter
Yor form
01
code ciytVitbacoUUncil- yor form of government organized pursuant to RCW Title 35A, that executed the
foregoing instrument, and acknowledged such instrument to be her free and voluntary act and deed of said
city for the uses and purposes therein mentioned, and on oath stated that s/he was duly authorized to execute
such instrument.
GIVEN UNDER MY 14AND AND OFFICIAL SEAL this day of
City of Tukwila
Stormwater Maintenance
Declaration of Covenant
A,1 0A
Printed Namc-'
NOTARY PUBLIC in 2d �tb, th�,�Stt, of W�whin
residing at
My Commission Expires
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -6 of 19
Record Date:912412025 10:51 AM King County, WA
EXHIBIT A
Legal Description of .Property
�r• «-M w
Plat Block:
Plat Lot: 88
City of Tukwila
Stormwater Maintenance
Declaration of Covenant
Instrument Number: 20250924000387 Document:COV Ree: 5321.50 Page -7 of 19
Record Date:912412025 10:51 AM King County, WA
EXHIBIT B
Permit
City of Tukwila
Storwater Maintenance
Declaration of Covenant
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -8 of 19
Record Date:912412025 10:51 AM King County, WA
�po0 Department of Community Development
k
n% r Southcenter Boulevard,ri
Tukwila,
Phone:t. Washington r
inspection Scheduling: https.//tukw-egov.aspgov.com/BP`/Index.html
Web site: b
Parcel No. 3347400470
Address: 12017 44TH AVE S
Project Name: Allentown Lot 2
Permit plumber: X724-0159
Issue Crate: 7/15/2025
Permit Expires On: 1/11/2026
Name:
Cary Lang'. Construction
.Address:
29815 24th Ave SW, Federal Way,
WA, 98023
Contact Person:
Name:
Cary Lang
Phone: (253) 740-3332
Address:
29815 24th Ave SW, Federal Way,
WA, 98023
Contractor:
Names
CARY LANG CONSTRUCTION INC
Phone: (253) 661-6880
Address:
2981.5 24Th AVE SW, FEDERAL WAY,
WA, 98023-2300
License No:
CARYLCII01OF
Expiration Date: 9/26/2026
Lender:
Name:
n/a
Address:
DESCRIPTION OF WORK:
Residential New Construction Single Family For Parcel 3347400470 Address 12017 44th Ave S.
Project Valuation: $533,035,12 Fees Collected: $43,879.14
Type of Fire Protection: Sprinklers: NO
Fire Alarm:
Type of Construction: Occupancy per IBC.
Electrical Service Provided by: Tukwila Water District. Tukwila
Sewer District: Tukwila
Electrical Service Provided by:
Water District:
Sewer District:
���� Current Codes adapted by the City of Tukwila:
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -9 of 19
Record Datc:912412025 10:51 AM King County, WA
International Fire Code Edition:
International Building Code Edition:
International Residential Code Edition:
International Mechanical Code Edition
Uniform Plumbing Code Edition:
International Fuel Gas Code:
Public Works Activities:
Channelization/Striping:
Curb Cut/Access/Sidewalk:
Fire Loop Hydrant:
Flood Control Zone:
Hauling/Oversize Load',
Land Altering:
Landscape irrigation:
Sanitary Side Sewer:
Sewer Main Extension;
Storm Drainage:
Street Use. -
Water Main Extension:
2021
2021
National Electrical Code:
2023
2021
WA Cities Electrical Code:
2023
2021
WAC 296-468:
2023
2021
WA State Energy Code:
2021
2021
Volumes: Cut: 300 Fill: 300
Water Meter: Yes
Alt provisions of law and ordinances governing this work will be compiled with, whether specified herein or not.
The granting of this permit does not presume to give authority to violate or cancel the provisions of any other
state or local laws regulating construction or the performance of work.
This permit shall become null and void if the work Is not commenced within 180 days for the date of issuance, or if
the work is suspended or abandoned for a period of 180 days from the last inspection.
PERMIT CONDITIONS:
1: Condition Notes
2: Work shall be installed in accordance with the approved construction documents, and any changes made
during construction that are not In accordance with the approved construction documents shall be
resubmitted for approval.
3: All permits and approved construction documents shall be kept at the site of work and shall be open to
inspection by the Building Inspector until final inspection approval is granted.
4: The special Inspections and verifications for concrete construcCon shalt be as required by IBC Chapter 17,
5: When special Inspection Is required, eltherthe owner or the registered design professional in responsible
charge, shall employ a special inspection agency and notifythe Building Official of the appointment prior to
the first building inspection. The special Inspector shall furnish inspection reports to the Building Official in
a timely manner.
6: A final report documenting required special Inspections and correction of any discrepancies noted in the
Inspections shall be submitted to the Building Official. The final inspection report shall be prepared by the
approved special Inspection agency and shall be submitted to the Building Official prior to and as a
condition of final inspection approval.
7: All construction shall be done In conformance with the Washington State Building Code and the
Washington State Energy Code,
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -10 of 19
Record Datc:912412025 10:51 AM King County, WA
9: All wood to remain in placed concrete shall be treated wood.
9: A Certificate of occupancy shall be issued for this building upon final inspection approval by Tukwila
building inspector.
10: All construction noise to be in compliance with Chapter 9.22 of the City of Tukwila Municipal Code. A copy
can be obtained at City Hall in the office of the City Clerk.
11: Water heaters shall be anchored or strapped to resist horizontal displacement due to earthquake motion.
Strapping shall be at points within the upper one-third and lower one-third of the water heater's vertical
dimension. A minimum distance of 4 -Inches shall be maintained above the controls with the strapping.
12: VALIDITY OF PERMIT: The issuance or granting of a permit shall not be construed to be a permit for, or an
approvalof, any violation of any of the provisions of the building code or of any other ordinances of the City
of Tukwila. Permits presuming to give authority to violate or cancel the provisions of the code or other
ordinances of the City of Tukwila shall not be valid. The issuance of a permit based on construction
documents and other data shall not prevent the Building Official from requiring the correction of errors in
the construction documents and other data.
13; Under RCW 19.106,440 and RCW 19.27.110 the City of Tukwila Is required to provide this written notice to
the building permit applicant that there are contractor registration laws and the potential risk and
monetary liability to the homeowner for using an unregistered contractor.
14: ***PUBLIC WORKS PERMIT CONDITIONS"*
15: Prior to construction, all utilities in the vicinity shall be field located. NOTE: For City of Tukwila utility
locates, call 811 or 1-800424-5555.
16: Work affecting traffic flows shall be closely coordinated with the Public Works Inspector. Traffic Control
Plans shall be submitted to the inspector for prior approval,
17: The City of Tukwila has an undergrounding ordinance requiring the power, telecommunications, and cable
service lines be underground from the point of connection on the pole to the house,
IS: Flagging, signing and coning shall be in accordance with MUTCD for Traffic Control, Contractor shall
provide certified flagmen for traffic control. Sweep or otherwise clean streets to the satisfaction of Public
Works each night around hauling route (No flushing allowed). Notify Public works inspector before 12:00
Noon on Friday preceding any weekend work.
19: Clean and remove debris from City catch basin in and around hauling routes. Provide adequate temporary
access as not to interfere with other vehicle movement or cause trucks to travel over curbs. All vehicles
must make a complete stop prior to entering public right-of-way.
20: Temporary erosion control measures shall be implemented as the first order of business to prevent
sedimentation off-site or into existing drainage facilities per Appendix D of the 2021 KCSWDM,
21: The site shall have permanent erosion control measures In place as soon as possible after final grading has
been completed and prior to the Final Inspection.
22: From May I through September 30, inspect and maintain temporary erosion prevention and sediment at
least monthly. All disturbed areas of the site shall be permanently stabilized prior to final construction
approval.
23: It Is strongly recommended that storm drainage designs be prepared and stamped by a Washington State
licensed engineer. Otherwise, the owner assumes liability for the design and any subsequent related
damages.
24: Downspouts, driveway, patio and drainage from other Impervious areas shall be collected in an on-site
storm drain system. Drains shall be 4" minimum diameter, PVC schedule 40 or corrugated poly ethylene
pipe with a minimum 1% slope for gravity discharge to location approved by the Public Works Department.
Downspouts shall not connect to footing drains. Footing drain and downspouts may share a single
discharge pipe downstream of the lowest footing drain,
25: All private storm drain pipe shall be either concrete or reinforced ADS pipe. Treated corrugated metal pipe
may be used for detention facilities.
26: Pre -construction storm drainage patterns shall be met during and after construction.
27: The property owner Is responsible for the maintenance of its storm drainage system and, for this purpose,
shall have a maintenance plan In place and the responsibility for maintenance assigned prior to Public
Works final.
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -11 of 19
Record Datc:912412025 10:51 AM King County, WA
28: The applicant shall Install a Washington State Health Department approved backfiow device between the
water meter and SFR.
29: The water meter box shall be located within City right-of-way at the property line or a recorded utility
easement.
30: Driveways shall comply with City residential standards. Driveway width shall be a 10' minimum and 20'
maximum, Slope shall be a maximum of 15%. Turning radii shall be a minimum of 5'.
31: The driveway shall be designed and sloped so that drainage from the driveway does not flow onto the
existing road surface.
32: Driveways shall be paved for a minimum distance of 20'from the edge of the existing road pavement.
33: Provide overlay of matching asphalt within trenching. Grind pavement, to include pedestrian path, and
provide 2" overlay at the discretion of the Project Inspector.
34: Pavement mitigation fees may apply to this permit. Amount estimated to be xxx sq. ft. x $xx.xx per sq, ft,
$x,xxx.xx. Final measurement to be made in the field by the Public Works inspector prior to Public Works
Final.
35: Prior to Public Works Final, provide storm drainage as -built plan, storm drainage maintenance plan and
responsibility for maintenance assigned for stormwater treatment and flow control BMPS/Facilities.
36., A bond or cash equivalent in the amount of 150% x cost of construction within the City right-of-way made
out to the City of Tukwila for possible property damages caused by activites.
37: A copy of the Certificate of Insurance Coverage (minimum of $2,000,000 naming the City of Tukwila as
additionally insured).
38: Sewer lines shall be laid at least 10 feet horizontally, measured edge to edge, from any existing or proposed
water supply line. Install all sanitary sewer crossings under water lines so that the top of the sewer pipe is
at least 18 inches below the bottom of the water line.
39: Applicant shall execute and submit a King County Residential Sewer Use Certification form before
building/plumbing permit final and list only new plumbing fixture units and not the ones replaced in kind.
Located here https://www-tukwilawa.gov/wp-content/uploads/PW-2021-RES-FORM,pdf
40: Prior to issuance of this permit, Owner/Applicant shall provide a Traffic Concurrency Certificate Application
and pay $400.00 under PW permit CXX-OXX. Fee for 1-3 residential units.
41: Install Sewer clean-out at building with required bends totaling no
more than 90*.
42: Schedute mandatory pre -construction meeting with the Public Works Inspector, https://tukw-
egov.aspgov.com/BP/`lindex.htrnl. Any questions please call 206-431-3670.
43: From October I through April 30, cover any slopes and stockpiles that are 311:1V or steeper and have a
vertical rise of 10 feet or more and will be unworked for greater than 12 hours. During this time period,
cover or mulch other disturbed areas, If they will be unworked more than 2 days. Covered material must
be stockpiled on site at the beginning of this period. Inspect and maintain this stabilization weekly and
immediately before, during and following storms.
44: Schedule mandatory pre -construction meeting with the Public Works Inspector, https://tukw-
egov,aspgov.com/BP/index.htrnt. Any questions please call 206-431-3670.
45: Prior to project final Inspection approval, the applicant shall execute a recording with King County records a
completed Joint Side Sewer Easement and Maintenance Agreement,
PERMIT INSPECTIONS REQUIRED
BACKFLOW - WATER
BIOX", 11101NA-6w
EROSION MEASURES
EROSION MEASURES FNL
FRAMING
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -12 of 19
Record Date:912412025 10:51 AM King County, WA
GAS PIPING FINAL
GAS PIPING FINAL
GAS PRESSURE TEST
GLAZING
LATH—GYPSUM BOARD
MECHANICAL FINAL
PAVING AND RESTORE
PIPE—DUCT INSULATION
PLUMBING FINAL
PUBLIC WORKS FINAL.
PUBLIC WORKS PRE -CON
ROOF SHEATHING
ROOF—CEILING INSUL
ROUGH -IN GAS PIPING
ROUGH -IN MECHANICAL
ROUGH -IN PLUMBING
SANITARY SIDE SEWER
SI -CONCRETE CONST
STORM DRAINAGE
STREET USE
UNDERFLOOR FRAMING
UNDERGROUND
WALL INSULATION
WALL SHEATHING—SHEAR
WATER METER- PERM
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -13 of 19
Record Date:912412025 10:51 AM King County, WA
EXHIBIT "C!`
- STORMWAER FACILITY / BMP SITE PLAN
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155 x I&L x 4'D (ROCK) '
ROOF INFILTRATION DRYWFILL
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SCALE: NONE
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Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -14 of 19
Record Date:912412025 10:51 AM King County, WA
S � i
Operations & Maintenance Plan with Schedule
City of Tukwila
Stormwater :Maintenance
Declaration of Covenant
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -15 of 19
Record Date:912412025 10:51 AM King County, WA
._.._-._W INSPECTION/MAINTENACE CHECKLIST
1 -Year) Augustor5e temberjand after major stormeve nts rmanufacture'srecommendations
2 -Twine a Year
3 - Monthl
STRUCTURE
INSPECTION
iNSPEC DON RESULTS AND MA NTANCE DONE
Ins ecflan resultslmalntenanae
Date Comments
Infiltration Drywell
2
Inspection Results:
Maintenance Performed:
Conveyance Pipes
1
Inspection Results:
Maintenance Performed:
CB #1 -Type 1
1
Inspection Results.
Maintenance Performed:
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -16 of 19
Record Date:912412025 10:51 AM King County, WA
f�{{ ai&. f x r �Ycaf m5x s a
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Maintenance Defector 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 basin 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 bask,
'fa the depth from the bottom of basin to invert
the lowest pipe into or out of the basin. _
Dead animals or vegetation that could generate No dead animals or vegetation
odors that could cause complairds or dangerous present within catch basin.
gases (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 % 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 % inch and longer than 3 feet, Catch basin is sealed and is
bottom any evidence of soil particles entering catch structurally sound.
basin through cracks, or maintenance person
judges that catch basin Is unsound.
Cracks wider than % inch and longer than 1 foot No cracks more than Y. inch wide tat
at the joint of any inlettoutlet pipe or any evidence the joint of inlettoutiet pipe.
of sol particles entering catch basin through
cracks.
Settlement) 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 %-inch at the joint of the No cracks more than %-Inch wide at
inletioutlet pipes or any evidence of soil entering the joint of Inlet/outlet pipes.
the catch basin at the joint of the inlet/oWet
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.
InletiOutlel Pipe Sediment Sediment filling 20% or more of the pipe. Inletfoutlet pipes clear of sediment.
accumulation
Trom Ono oebrls Tram ano netxla amumuietod In Inlevoutlet No trotnt or aeons Irl pipea.
pipes (includes floatables and non-floatables).
Damaged Cracks wider than 11 -inch at the joint of the No cracks more than Y«inch wide at
intetroutlet pipes or any evidence of sal entering the joint of the inlet/outlet pipe.
at the joints of the inletioutlet pipes.
APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
2021 Surface Water Design Manual — Appendix A A-9 7/23/2021
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -17 of 19
Record Date:912412025 10:51 AM King County, WA
APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
7/23/2021 A-10 2021 Surface Water Design Manual —Appendix A
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Maintenance
Defect or Problem
Condition When Maintenance is Needed
Results Expected When
Component
Maintenance is Performed
Metal Grates
Unsafe grate opening
Grate with opening wider than rh inch.
Grate opening meets design
(Catch Basins)
standards.
j
Trash and debris
Trash and debris that is blocking more than 20%
Grate free of trash and debris.
of grate surface.
Damaged or missing
Grate missing or broken members) of the grate.
Grate is in place and meets design
Any open structure requires urgent
standards.
maintenance.
Manhole Cover/Lid
Cover/lid not in place �
Cover/lid Is missing or only partially in place. x
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 Working
maintenance person with proper tools. Bolts
cannot be seated. Self-locking cover/lid does not
work.
Cover/lid difficult to _
One maintenance person cannot remove
Covedlid can be removed and
Remove
cover/lid after applying 80 lbs. of lift
reinstalled by one maintenance
person.
APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
7/23/2021 A-10 2021 Surface Water Design Manual —Appendix A
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -18 of 19
Record Date:912412025 10:51 AM King County, WA
APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
2021 Surface Water Design Manual —Appendix A ] 1 9/23!2021
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Maintenance Defect or Problem+20%
ditions When Maintenance is Needed
Results Expected When
Component
Maintenance Is Performed
Pipes Sediment & debrisumulated
sediment or debris that exceeds
Water flaws freely through pipes.
accumulation
of the diameter of the pipe. _
Vegetationfroots
Vegetationfroots 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
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.
Damage to protective
Protective coating is damaged; rust or corrosion
Pipe repaired or replaced.
coating or corrosion
is weakening the structural integrity of any part of
pipe.
Damaged
Any dent that decreases the cross section area of
Pipe repaired or replaced.
pipe by more than 20% or is determined to have
weakened structural integrity of the pipe.
Ditches Trash and debris
Trash and debris exceeds 1 cubic foot per 1,000
Trash and debris cleared from
square feet of ditch and slopes.
ditches.
yDitch
Sediment
Accumulated sediment that exceeds 20% of the
cleaned/flushed of all sediment
accumulation
design depth. _
and debris so that I 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 ofnoxious
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
w
Waterflows 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) I
soil.
APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
2021 Surface Water Design Manual —Appendix A ] 1 9/23!2021
Instrument Number: 20250924000387 Document:COV Rec: 5321.50 Page -19 of 19
Record Date:912412025 10:51 AM King County, WA
APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
��
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Maintenano Defect or Problem Conditions When Maintenance Is Needed Results Expected n
p
Preventative
ing, obstructions
ppi�e
1!�
flouring wet season.
Site
Maintenance
Defect or Problem
Conditions When Maintenance is Needed
Results Expected When
Component
Pipes
Inlet is plugged
Maintenance is Performed
Preventative
Plugging, obstructions
Any cause limiting flow into drywell.
Drywell able to receive full flow prior
Vegetation/roots
Vegetatio is that redu a movement of Water flows freely through pipes,
to and during wet season.
site
Trash and debris
Trash or debris that could end up in the drywell is
No trash or debris that could get into
evident.
the drywell can be found.
Pipes
inlet is plugged
The entrance to the pipe is restricted due to
The entrance to the pipe is not
ep oi it. other than at the outlet to the trench.
Flows are not getting into the trench as des Water enters and exits trench as
Structure
sediment, trash, or debris.
restricted.
trench _ _
Vegetation/roots
Vegetation/roots that reduce free movement of
Water flows freely through pipes.
The cleanout inspection access is not available. C trinspection access is
water through pipes.
auailab
Plugged
Sediment or other material prevents free flow of
Water flows freely through pipes.
of trench
water through the pipe.
_Fitter media Dinged
Pater meuia plugged. f lorr urrvugn attar ma vrmal.
Broken or joint leaks.
Damage to the pipe or pipe joints allowing water
Pipe does not allow water to exit
—
to seep out.
other than at the outlet.
Structure
',isin leaks
Holes or breaks in the basin allow water to leave
Basin is sealed and allows water to
the basin at locations other than per design.
exit only where designed.
Filter Media
Fitter media plugged
Filter media plugged.
Flow through filter media is normal.
Inspection
Frequency
Annually and prior to and following significant
Inspect drywell system for any
storms. Idefects
of deficiencies.
APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES
��
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Maintenano Defect or Problem Conditions When Maintenance Is Needed Results Expected n
Component Maintenance -i ormed
Preventative
ing, obstructions
ble to receive full
Debris or trash limiting flow to infiltration trench. Intilnordebris
flouring wet season.
Site
Trash and
Trash or debris that could end up in the o that could get into
infiltration trench is evident. the infiltration trench can be found.
Pipes
Inlet is plugged
a entrance to the pipe Is restricted o The entrance to the pipe is not
s nt, frac nr dahhs restricted.
Vegetation/roots
Vegetatio is that redu a movement of Water flows freely through pipes,
water throug s.
Plugged
Sediment or of I prevents free flow of Water flows freely through pipes,
water thro a pipe,
Broken or joint leaks.
D o the pipe or pipe €oin g water I Pipe does not allow water to exit
ep oi it. other than at the outlet to the trench.
Flows are not getting into the trench as des Water enters and exits trench as
Structure
F not r hin
trench _ _
signed.
Clean spection
The cleanout inspection access is not available. C trinspection access is
a does not allow
auailab
. ning or inspection
of trench
PIUP.r Meal
_Fitter media Dinged
Pater meuia plugged. f lorr urrvugn attar ma vrmal.
Ins n
Frequency
Annually and prior to and following significant Inspect infiltration trench syste
—
storms. any defects of deficiencies.
2021 Surface Water Design Manual — Appendix A A-35 7/23/2021