HomeMy WebLinkAbout2025 - Declaration of Covenant for Inspection and Maintenance of Stormwater Facilities and BMPS - Corporation of the Catholic Archbishop of Seattle / City of Tukwila - 20250106000614Instrument Number: 20250106000614 Document:COV Rec: 5335.50 Page -1 of 33
Record Date:1/6/2025 2:39 PM
Electronically Recorded King County, WA
After Recording Return to:
City Clerk
City of Tukwila
6200 Southcenter 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: CORPORATION OF THE CATHOLIC ARCHBISHOP
OFSEATTLE
GRANTEE: City of Tukwila, a Washington Municipal Corporation
ABBREVIATED LEGAL DESCRIPTION: PORTION OF SW QTR NW QTR STR 36-23-04 DAF
Full legal on page 5 of document.
KING COUNTY TAX PARCEL NUMBER: 3623049087
Page 1 of
Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -2 of 33
Record Date:1/6/2025 2:39 PM King County, WA
DECLARATION OF COVENANT FOR INSPECTION AND
MAINTENANCE OF STORMWATER FACILITIES AND BMPS
1. Parties
1.1 This Covenant for Inspection and Maintenance of Stormwater Facilities and Best
Management Practices ("Covenant') is made by and between CORPORATION OF THE CATHOLIC
ARCHBISHOP OF SEATTLE, 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.
2. Recitals
2.1 Grantor applied to City for issuance of a PW Construction Permit on October 241', 2022.
2.2 Pursuant to TMC 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. 3623049087and legally described in the attached Exhibit A incorporated herein
("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. D21-0032, 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 THEREFORE, in consideration of the foregoing recitals and other good and valuable
consideration including approval and issuance of City of Tukwila Permit No. D21-0032 on October 24th,
2022, 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 .
32 The Grantor(s) for itself and its successors in interest having any ownership interest in the
Property (collectively Owners) shall at theirsole 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.
3.3 The obligations required under Section 3.2 above shall be taken consistent the following:
3.3.1 The City shall have the right of ingress and egress over those portions of the Property
necessary to perform inspections of the stormwater facilities and BMPs and conduct other activities specified
in this Declaration of Covenant and in accordance with Tukwila Municipal Code ("TMC") 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.
Page 2 of
Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -3 of 33
Record Date:1/6/2025 2:39 PM 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
Feast 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 by TMC 14.30.080 and herein incorporated by reference,
the Director or equivalent municipal successor's official may take measures specified therein.
3.5 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 storrnwater 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.
3.7 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:
City Clerk
City of Tukwila
6200 Southcenter Blvd.
Tukwila, WA 98188
To Grantor:
CORPORATION OF THE CATHOLIC ARCHBISHOP OF SEATTLE
710 Ninth Ave
Seattle, WA 98104
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Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -4 of 33
Record Date:1/6/2025 2:39 PM King County, WA
3.3 With regard to the matters addressed herein, this Covenant constitutes the entireagreement
between the parties, and supersedes all prior discussions, negotiations, ani( all agreements whatsoever whether
oral or written. This Covenant shall be govenaed 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 Parties consent to the jurisdiction thereof. In the event of any legal action by either Party relating to this
Covenant, the Parties shall pay their own costs or fees.
3.9 This Covenant is intended to protect the value and desirability of the real property described
iri 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
S11,111 include subsequent amendments to sucla statutes and all successor statutes.
3.10 This Covenant shall rtnl with the land Land shall be binding upon the Owner:-, 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.
IN WITNESS WFIEPEOF. this Declaration of Covenant for iVlairatenance and Inspection of
Stormwater Facilities and Best Nvlanagenaent Practices is executed this'204*` tlav Of LUvCru Ix✓ - _± .
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DATED:
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Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -5 of 33
Record Date:1/6/21025 2:39 PM King County, WA
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Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -6 of 33
Record Date:1/6/2025 2:39 PM King County, WA
EXHIBIT "A"
LEGAL DESCRIPTION OF PROPERTY
THAT PORTION OF SECTION 36, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING
COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS:
BEGINNING AT THE NORTHWEST CORNER OF SAID SECTION 36; THENCE SOUTH 01°19'01" WEST ALONG
THE WEST LINE OF SAID SECTION 36, A DISTANCE OF 1,355.89 FEET; THENCE EASTERLY ALONG OF CURVE
TO THE LEFT, THE CENTER OF WHICH BEARS NORTH 02°45'45" EAST, HAVING A RADIUS OF 336.00 FEET,
AN ARC DISTANCE OF 9.00 FEET, THROUGH A CENTRAL ANGLE OF 01°32'04" TO THE SOUTH LINE OF THE
NORTH 36 FEET OF GOVERNMENT LOT 4 IN SAID SECTION 36; THENCE SOUTH 88°46'19" EAST ALONG SAID
SOUTH LINE A DISTANCE OF 372.81 FEET; THENCE SOUTH 01°13'41" WESTA DISTANCE OF 305.00 FEET;
THENCE NORTH 88°46'19" WEST A DISTANCE OF 50.00 FEET TO THE TRUE POINT OF BEGINNING;
THENCE SOUTH 88°46'41" EAST ALONG A LINE 100 FEET SOUTH OF AND PARALLEL TO THE SOUTH LINE OF
THAT PARCEL OF LAND LEASED TO SPERRY LAND CORPORATION AS SURVEYED AND MONUMENTED ON
THE GROUND IN 1968, A DISTANCE OF 420.58 FEET, MORE OR LESS, TO THE TOP OF THE LEFT BANK OF
THE GREEN RIVER; THENCE ALONG SAID TOP OF THE LEFT BANK THE FOLLOWING COURSES AND
DISTANCES:
SOUTH 07°00' EAST A DISTANCE OF 115 FEET;
SOUTH 01°06' WEST A DISTANCE OF 104 FEET;
SOUTH 09°12' WEST A DISTANCE OF 106 FEET;
SOUTH 26°49' WEST A DISTANCE OF 102 FEET;
SOUTH 47°21' WEST A DISTANCE OF 103 FEET;
SOUTH 60°15' WEST A DISTANCE OF 40 FEET;
SOUTH 74°35' WEST A DISTANCE OF 60 FEET;
WEST A DISTANCE OF 106 FEET;
NORTH 67°30' WEST A DISTANCE OF 107 FEET;
NORTH 26°19' WEST A DISTANCE OF 104 FEET;
NORTH 20°22' WEST A DISTANCE OF 103 FEET;
NORTH 21°54' WEST A DISTANCE OF 105 FEET;
NORTH 32°38' WEST A DISTANCE OF 116 FEET;
NORTH 44°04' WEST A DISTANCE OF 34 FEET, MORE OR LESS, TO A POINT FROM WHICH THE TRUE POINT
OF BEGINNING BEARS NORTH 69°38'41" EAST;
THENCE LEAVING SAID TOP OF LEFT BANK NORTH 69°38'41" EAST A DISTANCE OF 225 FEET, MORE OR
LESS, TO THE TRUE POINT OF BEGINNING;
Page 6 of
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Record Date:11612025 2:39 PM King County, WA
Page 7 of
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Record Date:1/6/2025 2:39 PM King County, WA
Citv of Tukwila
al 170
v, }$ 1r``
Department of Community Development
a� �' 6300 Southcenter Boulevard' Suite #100
Tukwila, Washington 98188
Phone: 206-431-3670
Inspection Scheduling: https://tukw-egov.aspgov.com/BP/index.htmi
Fire Inspection Request Line: 206-575-4407
Web site: htto://www.TukwilaWA.eov
DEVELOPMENT PERMIT
Parcel No: 3623049087 Permit Number: D21-0032
Address: 6841 S 180TH ST Issue Date: 10/24/2022
Permit Expires On: 4/22/2023
Project Name: Vietnamese Martyrs Church
Owner:
Name: Corporation of the Catholic Archbishop of Seattle
Address:
710 9th Avenue, Seattle, WA, 98134
Contact Person:
Name:
Kevin Broderick
Address:
55 S. Atlantic Street Suite 301, Seattle,
WA, 98134
Contractor:
Name:
Marpac Construction
Address:
1255 Weller Street Suite 500, Seattle,
WA, 98144
License No:
AEC4624
Lender:
Name:
N/A
Address:
DESCRIPTION OF WORK:
Phone: (206) 682-7525
Phone: (206) 329-4992
Expiration Date: 10/2/2023
DEMOLITION AND REMOVAL OF EXISTING PORTIONS OF THE CHURCH. NEW 2 STORY BLDG ADDITION INCLUDING
STEEPLES, DOME AND TIE IN AREAS. GRADING AS REQUIRED TO CREATE NEW PARKING LOT, SIDEWALKS AND
LANDSCAPE AREAS.
Project Valuation: $6,931,727.88 Fees Collected: $106,584.97
Type of Fire Protection: Sprinklers: YES
Fire Alarm: YES
Type of Construction: 1116
Electrical Service Provided by: Tukwila
Occupancy per IBC: A-3
Water District: Tukwila
Sewer District: Tukwila
Fees Collected:
Electrical Service Provided by:
Water District:
Sewer District:
Current Codes adopted by the City of Tukwila:
Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -9 of 33
Record Date:1/6/2025 2:39 PM King County, WA
International Fire Code Edition:
2018
International Building Code Edition:
2018
National Electrical Code:
2020
International Residential Code Edition:
2018
WA Cities Electrical Code:
2020
International Mechanical Code Edition:
2018
WAC 296-46B:
2020
Uniform Plumbing Code Edition:
2018
WA State Energy Code:
2018
International Fuel Gas Code:
2018
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:
Water Meter:
Volumes: Cut: 3620 Fill: 950
Number: 0
PRIVATE
No
All provisions of law and ordinances governing this work will be complied 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: An Emergency Responder Radio Coverage System (ERRCS) is required for this project and a separate Fire
permit is required for installation of the system. The system must comply with International Fire Code
Section 510 and WAC 51-54A-510. A copy of the Frequency Use Agreement from King County Radio shall be
included with the Fire permit application. At the Fire Final for the (ERRCS) Fire permit and prior to building
occupancy, the Fire Inspector shall receive a Emergency Responder Radio Coverage System (ERRCS)
Compliance Letter from King County Radio and the installers commissioning documents.
2: The system installation and operation must comply with International Fire Code Section 510 and WAC 51-
4A-510.After the system has been installed and tested, an Emergency Responder Radio Coverage System
(ERRCS) compliance Letter must be issued by King County Radio and included in the installers
commissioning documents. A copy of these documents must be given to Fire Inspector at final
inspection. Before building occupancy is allowed. The ERRCS must pass final inspection (Talk -Back Test) by
the Tukwila Fire Department.Once Installed, the ERRCS must be maintained and tested per the International
Fire Code.
17: FIRE PERMIT REQ- ERRCS
The total number of fire extinguishers required for a light hazard occupancy with Class A fire hazards is
calculated at one extinguisher for each 3,000 sq. ft. of area. The extinguisher(s) should be of the "all
purpose" (2A, 10 B:C) dry chemical type. The travel distance to any extinguisher must be 75' or less. (IFC
906.3) (NFPA 10, 5.4)
Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -10 of 33
Record Date:1/6/2025 2:39 PM King County, WA
3: Extinguishers shall be located in conspicuous locations where they will be readily accessible and
immediately available for use. These locations shall be along normal paths of travel, unless the fire code
official determines that the hazard posed indicates the need for placement away from normal paths of
travel. (IFC 906.5)
4: Fire extinguishers require monthly and yearly inspections. They must have a tag or label securely attached
that indicates the month and year that the inspection was performed and shall identify the company or
person performing the service. Every six years stored pressure extinguishers shall be emptied and subjectec
to the applicable recharge procedures. If the required monthly and yearly inspections of the fire
extinguisher(s) are not accomplished or the inspection tag is not completed, a reputable fire extinguisher
service company will be required to conduct these required surveys. (NFPA 10, 7.2, 7.3)
6: Maintain fire extinguisher coverage throughout.
7: An approved automatic fire sprinkler extinguishing system is required for this project. (City Ordinance
#2436)
9: All new sprinkler systems and all modifications to existing sprinkler systems shall have fire department
review and approval of drawings prior to installation or modification. New sprinkler systems and all
modifications to sprinkler systems involving more than 50 heads shall have the written approval of Factory
Mutual or any fire protection engineer licensed by the State of Washington and approved by the Fire
Marshal prior to submittal to the Tukwila Fire Prevention Bureau. No sprinkler work shall commence
without approved drawings. (City Ordinance No. 2436).
19: FIRE PERMIT REQ - FIRE SPRINKLER
8: U.L. central station supervision is required. (City Ordinance #2436)
10: Sprinklers shall be installed under fixed obstructions over 4 feet (1.2 m) wide. (NFPA 13-8.6.5.3.3)
12: Fire protection systems shall be maintained in accordance with the original installation standards for that
system. Required systems shall be extended, altered or augmented as necessary to maintain and continue
protection whenever the building is altered, remodeled or added to. Alterations to fire protection systems
shall be done in accordance with applicable standards. (IFC 901.4)
13: A fire alarm system is required for this project. The fire alarm system shall meet the requirements of
N.F.P.A. 72 and City Ordinance #2437.
14: All new fire alarm systems or modifications to existing systems shall have the written approval of The
Tukwila Fire Prevention Bureau. No work shall commence until a fire department permit has been
obtained. (City Ordinance #2437) (IFC 901.2)
18: FIRE PERMIT REQ - FIRE ALARM
15: Fire Department lock boxes shall be provided for access to all fire alarm panels and sprinkler risers. The
appropriate key(s) for access shall be placed in the lockbox. Lockbox order forms must be obtained from
the Tukwila Fire Department. The lockbox should be mounted so that it is readily visible and not over 60
inches high. (City Ordinance #2437)
16: An electrical permit from the City of Tukwila Building Department Permit Center (206-431-3670) is required
for this project.
11: Contact The Tukwila Fire Prevention Bureau to witness all required inspections and tests. (City Ordinances
#2436 and #2437)
20: DEVELOPMENT FIRE CONDITIONS; D21-0032 Church Expansion
- FIRE ACCESS ROAD SURFACE: The surface shall be constructed of asphalt or concrete capable of supporting
the imposed load of fire apparatus weighing at least 85,000 lbs.
- AERIAL FIRE ACCESS LANE NEEDS TO SUPPORT AERIAL OUTRIGGER POINT -LOADING. ANY UNDERGROUND
TANKS WILL ALSO NEED TO SUPPORT AERIAL OUTRIGGER POINT -LOADING.
-DEAD-END FIRE APPARATUS ACCESS ROAD TURNAROUND. SEE2018 WASHINGTON STATE FIRE CODE
SECTION D101 FIGURE D103.1 FOR CLARIFICATION.
21: Structural soils shall be shown directly on the paving and grading plans as a new hatch and in the legend.
22: Applicant shall ensure appropriate tree spacing per previous Planning correction #7. For example, trees
near the levee are spaced too closely per TMC 18.52.080.
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Record Date:1/6/2025 2:39 PM King County, WA
23: Per previous Planning correction #13, applicant shall ensure that diversity requirements are met. For
example, diversity percentages have not been added for shrubs.
24: Per previous Planning correction #10, all plantings within the shoreline jurisdiction shall be native. Per the
most recent landscape plans, it appears that a few native plantings were missed, such as Rhododendron
PJM and Hinoki Cypress.
25: ***PUBLIC WORKS PERMIT CONDITIONS***
26: Schedule mandatory pre -construction meeting with the Public Works Inspector, https://tukw-
egov.aspgov.com/BP/index.html. Any questions please call 206-431-3670.
27: Prior to construction, all utilities in the vicinity shall be field located. NOTE: For City of Tukwila utility
locates, call 811 or 1-800-424-5555.
28: 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.
29: 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.
30: 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.
31: Any material spilled onto any street shall be cleaned up immediately.
32: Hauling 6 loaded vehicles per hour/8 hours a day for 2 or more consecutive days or hauling hazardous waste
shall require application for a Hauling Permit prior to any associated activity.
33: 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.
34: Temporary erosion control measures shall be implemented as the first order of business to prevent
sedimentation off-site or into existing drainage facilities.
35: 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.
36: The Land Altering Permit Fee is based upon an estimated cubic yards of cut and cubic yards of
fill. If the final quantity exceeds this amount, the developer shall be required to recalculate the final
quantity and pay the difference in permit fee prior to the Final Inspection.
37: The Land Altering Permit Fee is based upon an estimated cubic yards of excavation. If
contamination is detected, the land altering quantity and permit fee will change. The applicant will be
required to calculate final quantities and pay the difference in permit fee prior to the Final Inspection.
38: From October 1 through April 30, cover any slopes and stockpiles that are 3H: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.
39: From May 1 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.
40: 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.
41: All private storm drain pipe shall be either concrete or reinforced ADS pipe. Treated corrugated metal pipe
may be used for detention facilities.
42: Pre -construction storm drainage patterns shall be met during and after construction.
43: 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: 20250106000614 Document:COV Rec: $335.50 Page -12 of 33
Record Date:1/6/2025 2:39 PM King County, WA
44: A double detector check valve assembly is required for the fire lines.
45: The deduct meter shall read flow quantities in 100's of cubic feet and shall have a TRPL register that is
compatible with the Sensus automatic reading system.
46: Please show existing water meters and water service to each building. Per Tukwila Municipal Code, each
building shall be metered separately. Any modification to existing irrigation system will require an irrigation
permit.
47: It shall be verified in writing to the Public Works Inspector that the fire loop system for the building contains
a State Department of Health approved double check detector valve assembly. This shall be done prior to
the Final Inspection.
48: Prior to backfill of pipe and final sign off, provide as -constructed plan sheet showing dimensions in relation
to property line and house.
49: Sewer and water utilities shall be plugged at the mains if they are to be abandoned. If they will be used
again in the near future for a new building, they shall be capped at the property line and at the water meter
respectively.
50: Maintain emergency, pedestrian, and vehicular access to buildings, trails and transit at all times.
51: Construction equipment shall be kept off of existing 5 foot wide pedestrian path, as much as possible, to
avoid damage of asphalt.
52: Contractor shall stop all construction activities within the City of Tukwila, if local traffic and/or pedestrian
travel is not adequately addressed.
53: 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.
54: 1. Traffic impact and concurrency fees are required for the addition from62,127 to 64,118 SF. Apply for a
concurrency permit and email Cherie at cherie.du@tukwilawa.gov so the fees may be added.
2. Provide a cut sheet for the irrigation backflow. Note that the irrigation backflow must be immediately
downstream from the deduct meter or the split from the main.
3. Fire access road shall meet all requirements of the levee easement.
4. Proposed development shall respect all rules of the easements on the property.
PERMIT INSPECTIONS REQUIRED
Permit Inspection Scheduling: https://tukw-egov.aspgov.com/BP/index.html
Fire Inspection Request Line: 206-575-4407
5180 BACKFLOW - FIRE
5170 BACKFLOW -IRR
1700 BUILDING FINAL"
5000 CURB ACCESS SDW
EMERGENCY RADIO FINAL
5200 EROSION MEASURES
5210 EROSION MEASURES FNL
FIRE ALARM FINAL
FIRE D PERMIT FINAL
5020
FIRE LOOP HYDRANT
5030
FLOOD ZONE CONTROL
5060
LANDSCAPE IRRIGATION
1200
LANDSCAPING
1500
PLANNING FINAL
0101
PRE -CONSTRUCTION BLDG
0102
PRE -CONSTRUCTION PLNG
1600
PUBLIC WORKS FINAL
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Page 8 of
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -15 of 33
Record Date:1/6/21025 2:39 PM King County, WA 125'LEVELA
I I CB 48 TYPE 1— BUFFER LINE
CS #3 -TYPE
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-TYPE
OELL
#!-TYPE I \_ \
FLOOD PR(
LEVEE F=:E-'�'T
REC. #201020W02883
EX. CMRCH Br
TO AE)lWN
,A -63#5 -TYPE 1L
#1 STORMFILTER
—CS #9 -TYPE 2
CHUACH EXPANSM
Pi�=W 00 (MAIN FLOOR)
R -43,00 (2ND FLOOR)
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -16 of 33
Record Date:11612025 2:39 PM King County, WA
Page 9 of
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -17 of 33
Record Date:11612025 2:39 PM King County, WA
Conveyance Pipes
1
Inspection Results:
Maintenance Performed:
MH # 1- Sto—filter
_
Inspection Results:
Maintenance Performed;
C8 #1 -type 1
1
Inspection Results:
Matmenance Performed:
CH #2 - Type 1
1
Inspection Results:
Maintenance Performed:
C8 #3 - Type 1?
i
inspection Results:
Maintenance Performed:
CR #4 -Type 11
I
inspection Resu4ts:
Maintenance Performed:
CS #5 - Type IL
1
Inspection Results:
Maintenance Performed:
C$#6 -Type it
{{
7 q
inspection Results:
maintenance Performed:
C8#7 - Type 2
claw Control
1
inspection Results:
Maintenance Performed:
C$ #a- Type P
1
Inspection Results:
Maintenance Performed:
C8 #9 - Type 2
q
inspection Results:
Maintenance Performed:
C& #16 -Type 2
inspection Results:
Maintenance Performed:
C8 #11- Type 1
1
inspection Results:
Maintenance Performed:
C$ #12 - Type 1
1
inspection Resutss;
7±71 Maintenance Performed:
Instrument Number: 20250106000614 Document:COV Rec: $335.50 Page -18 of 33
Record Date:1/6/2025 2:39 PM King County, WA
StormFilter TM Operation and Maintenance
Overview
The StormFilterTM (CBSF) consists of a multi-chamber steel, concrete, or plastic catch
basin unit that can contain up to four StormFilter cartridges. The steel CBSF is offered
both as a standard and as a deep unit. The CBSF is installed flush with the finished
grade and is applicable for both constrained lot and retrofit applications. It can also be
fitted with an inlet pipe for roof leaders or similar applications. The CBSF unit treats
peak water quality design flows up to 0.13 cfs, coupled with an internal weir overflow
capacity of 1.0 cfs for the standard unit, and 1.8 cfs for the deep steel and concrete
units. Plastic units have an internal weir overflow capacity of 0.5 cfs.
Maintenance Guidelines
Maintenance procedures for typical catch basins can be applied to the StormFilter
(CBSF). The filter cartridges contained in the CBSF are easily removed and replaced
during maintenance activities according to the following guidelines.
1. Establish a safe working area as per typical catch basin service activity.
2. Remove steel grate and diamond plate cover (weight 100 lbs. each).
3. Turn cartridge(s) counter -clockwise to disconnect from pipe manifold.
4_ Remove 4" center cap from cartridge and replace with lifting cap.
5. Remove cartridge(s) from catch basin by hand or with vactor truck boom.
6. Remove sediment via vactor truck (min.clearance 13" x 24").
7. Remove sediment from cartridge bay. (min. clearance 9.25" x 11"),
8. Rinse interior of both bays and vactor remaining water and sediment.
9. Install fresh cartridge(s) threading clockwise to pipe manifold.
10. Replace cover and grate.
11. Return original cartridges to Contech for cleaning.
Media may be removed from the filter cartridges using the vactor truck before the
cartridges are removed from the catch basin structure. Empty cartridges can be easily
removed from the catch basin structure by hand. Empty cartridges should be
reassembled and returned to Contech as appropriate.
Materials required include a lifting cap, vactor truck and fresh filter cartridges. Contact
Contech for specifications and availability of the lifting cap. The vactor truck must be
equipped with a hose capable of reaching areas of restricted clearance. The owner may
refresh spent cartridges. Refreshed cartridges are also available from Contech on an
exchange basis. Contact the maintenance department of Contech at 503-258-3157 for
more information.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -19 of 33
Record Date:1/6/21025 2:39 PAI King County, WA
Estimated Flow from Drainage Pipes (if available):
Cartridges Submerged: Yes n No [-] Depth of Standing VVister:
StormFilter Maintenance Activities (check off if done and give description)
L1 Trash and Debris Removal:
ID Minor Structural Repairs:
r -j Drainage Area Report
Excessive W Loading: Yes 17
J No ❑ Source:
Sediment Accumulation on Pavement: Yes 0 No Source:
Erosion of Landscaped Areas: Yes FI No ❑ Source:
items Needing Further Work:
Owners should contact the local public works department and inquire about how the department disposes of their street waste
residuals.
Other Comments:
Review the condition reports from the previous inspection visits,
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -20 of 33
Record Date:1/6/21025 2:39 PAI King County, WA
is a
Months in Service:
Oil in Forebay (if present)
Sediment Depth in Forebay (if present):
Sediment Depth on Vault Floor:
Structural Damage:
Drainage Area Report
Excessive Oil Loading:
Sediment Accumulation on Pavement:
Erosion of Landscaped Areas:
Yes 17 No E]
Yes 0 No ❑ Source:
Yes r7l No ❑ source:
Yes 0 No ❑ Source:
StormFi(ter Cartridge Replacement Maintenance Activities
Remove Tash and Debris: Yes D
No 'El
Details:
Replace Cartridges: Yes EJ
No El
Details:
Sediment Removed: Yes 0
No El
Details:
Quantity of Sediment Removed (estimate?):
Minor Structural Repairs! Yes E]
No El
Details:
Residuals ;debris, sediment) Disposal Methods:
-
Notes:
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -21 of 33
Record Date:1/6/21025 2:39 PM King County, WA
effective infiltration performance moreso than rain gardens. The soil in the bioretention cell has been
enhanced to encourage and support vigorous plant growth that serves to fitter the water and sustain a
minimum infiltration capacity. Depending on soil conditions, bioretention cells niay have water in them
throughout the wet season and may overflow during major storm events. However, standing water can also
be an indicator that periodic maintenance is required to sustain infiltrative performance,
MAINTENANCE RESTRICTIONS
The size, placernent, and design of the rain garden as depicted by the flow control BMP site pian and
design details must be maintained and may not be changed without written approval either from the King
County Water and Land Resources Division or through a future development per It fiom King County.
Plant materials may be changed to suit tastes, but chemical fertilizers and pesticides must not be used.
• Bioretention cells must be inspected annually for physical defects and sediment accumulation.
• After major storm events, the system should be checked to see that the overflow system is working
property and sedimentation is not occurring at the inlet. If erosion channels or bare spots are
evident, they should be stabilized with soil, plant material, mulch, or landscape rock. Sediment
deposits should be carefully removed and the sediment source eliminated.
• A supplemental watering program may be needed the first year to ensure the long -teen survival of
the bioretention cells' vegetation.
• Chemical fertilizer, and pesticides must not be used.
• Mulch may be added and additional compost should be worked into the soil over time.
• Plant materials may be changed to suit tastes,
• Vegetation should be maintained as follows:
1) replace all dead vegetation as soon as possible.
2) remove fallen leaves and debris as needed;
3) remove all noxious vegetation when discovered;
4) manually weed without herbicides or pesticides;
5) to protect infiltration performance, do not compact soils in the bioretention cell with heavy
maintenance equipment and/or excessive foot traffic;
6) during drought conditions, use mulch to prevent excess solar damage and water loss,
RECORDING REQUIREMENT
These bioretention flow control 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 Kin-, County 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 King County Department of Permitting and Environmental
Services (DPER) may require additional -Instructions based on site-specific conditions. See King County's
Surface Water Design Manual website for additional information and updates,
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -22 of 33
Record Date:11612025 2:39 PM King County, WA
8t1Rt3�S
yi� 810 RETENTION AREA
PLAN VI A
NTS
TREES TREES
FREEBOARD
ABOVE OVERFLOW WE
TO TOP OF BERM OR
--ADJACENT ROADWAY
i
SHRU
BS&S t
-z. GROUND' �-.,,.-..-.�� � =-1 2 RAIN TOP WOTFi
OeERFLOWTO
W MIN TO Ir MAX MAX SLOPE 3H:1V BELOW SUITABLE SURI•ACE
WATER DEPTH / OVERFLOW WATER 7 t C SCHAROE AREA
SURFACE ELEVATION (TYP.)
BIORETENTION -'f } �- COMPACTEO EARTH
SOIL MIX PE...R " BIORETENTION AREA -"—P-i {TERM (AS NEEDED,
REFERENCE II -C.
MINA B" OEPTH
SECTION A -A
NTS
CATCH BASIN R �+-
.iGRATE d' RIGID PIPE OUTLET
.'� -•' TO STORM SYSTEMA
\ VEGETATED
COMPACTED
-, - - EARTH BERM,
TGP ttd1OTH
If'tKtE SH ti. - TMIN
81ORETENTION AREA t
--_ -- -GROUND COVERS
_ i
41-
r.
PLAN VIEW A
NTS
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -23 of 33
Record Date:1/6/21025 2:39 PM King County, WA
constitute a hazard to County personnel or the
removed according to appfcatrta
public.
regulations. No danger of noxious
-vegetation where County personnel
I
or the public might normally be. A
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.
Grass/groundcover
Grass or groundcover exceeds 18 inches in
Grass or groundcover mowed to a
height.
height no greater than 6 inches.
Tank or Vault
Trash and debris
Any trash and debris accumulated in vault or
No trash or debris in vault,
Storage Area
tank (includes floatabhis and non-ficatables).
Sediment
Accumulated sediment depth exceeds 10% of
All sediment removed from storage
accumulation
the diameter of the storage area for Y. length of
area,
storage vault or any point depth exceeds 151 of
diameter. Example: 72 -inch storage tank would
require cleaning when sediment reaches depth of
7 inches for more than % length of tank.
Tank Structure
Plugged air vent
Any blockage of the vent.
Tank or vault freely vents.
Tank bent out of
Any part of tankrispe is bent out of shape more
lank repaired or replaced to design.
shape
than 10% of its design shape.
Gaps between
A gap wider than %-imbi at the joint of any tank
No water or soil entering lank
sections, damaged
sections or any evidence of soil particles entering
through joints or walls.
joints or cracks or
the tank at a joint or through a "It.
tears in wail
Vault structure
Damage to wall,
Cracks wider than YInch, any evidence of soil
Vault is sealed and structurally
frame, bottom, andfor
entering the structure through cracks or qualified
sound.
top stab
inspection personnel determines that the vault is
not structurally sound.
inlet/Outlet Pipes
Sediment
Sediment filling 20% or more of the pipe,
i
Inlet/outlet pipes clear of sediment.
accumulation
Trash and debris
Trash and debris accumulated in mlet/oLMet
No trash or debris in pipes,
I
I
pipes (includes flositables and non-floatabi es).
ofa
Cracks wider than '/,inch at the joint of the
No cracks more than wide at
"s
"'a C""C�
se
inietioutlet pipes or any evidence of soil �enlednq
�Y�/-inch
the joint of the inlet/outlet pipe.
the , You at lip��
.'rfe'. f,�
at the joints of the mletioutlet pipes-
u list op.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -24 of 33
Record Date:1/6/21025 2:39 PAI King County, WA
Coverdid difficult to One maintenance person cannot remove
Coverilid can be removed and
remove coverdid after applying 80 lbs of lift.
reinstalled by one maintenance
person.
Ladder rungs unsafe Missing rungs, misalignment, rust, or cracks.
Ladder meets design standards.
Allows maintenance person safe
access.
Large access
Damaged or difficult Large access doors or plates cannot be
Replace or repair access door so it
doorstplate
to open openedheoroved using normal equipment.
can opened as designed.
Gaps, doesn't cover Large access doors not flat and/or access
Doors close flat: cover access
completely opening not completely covered,
opening completely.
Lifting Rings missing, Lifting rings not capable of lifting weight of door
Lifting rings sufficient to lift or
rusted or plate.
remove door or plate.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -25 of 33
Record Date:1/6/21025 2:39 PAI King County, WA
lowest pipe in;c-a; ouYOWii;
Deposits of garbage exceeding I cubic foot In
No condition present Mich would
volume.
attract or support the breeding of
insects or rodents.
Sediment
Sediment exceeds 60% of the depth from the
Sump of structure contains no
bottom of the structure to the invert of the lowest
sediment,
pipe into or out of the structure or the bottom of
the PROP -T section or is within 6 inches of the
invert of the lowest pipe into or out of the
structure or the bottom of the PROP -T section.
Damage to frame
Comer of frame extends more than I/ inch past
Frame is even with curti.
and/or top slab
curb face into the street (if applicable)..
Top slab has holes larger than 2 square inches
Top slab is tee of holes and cracks.
orcracks wider than '/A inch.
Frame not sitting flush on top slab, i.e.,
Frame is sitting flush on top slab.
separation of more than 1% inch of the frame from
the top slab.
Cracks in walls or
racks wi er than % Inch and longer than 3 feet,
Structure is sealed and structurally
bottom
# any evidence of soil particles entering structure
sound,
iii through cracks, or maintenance person judges
I that StructureJ. unsound.
Cracks wider than '%: inch and longer than I foot
t No cracks more than 'J,, inch wide at
at the joint of any inletfoutlet pipe or any
the joint of irdettoutiet pipe.
evidence of soil particles entering structure
through cracks,
Settlement/
Structure has settled more than I 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 lunch at the joint of the
No cracks more than X -inch wide at
inlet/outlet pipes or any evidence of soil entering
the joint of infet(outlet pipes.
the structure at the joint of theinlet/oullet 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 OMPs Implemented if
appropriate. No contaminants
present other than a surface oil film.
Ladder rungs missing
Ladder is unsafe due to missing rungs,
Ladder meets design standards and
or unsafe
misalignment, , ust, cracks, or sharp edges,
allows maintenance person safe
access.
TROP -T Section
fDamage
T section is not securely attached to structure
T section securely attached to wall
wall and outlet pipe structure should support at
and outlet pipe,
least 1,000 Ids of up or down pressure.
Structure is not in upright position (allow up to
Structure in correct position.
10% from plumb).
Connections to outlet pipe are not watertight or
Connections to outlet pipe are -water
show signs of deteriorated grunt,
tight; structure repaired or replaced
and works as designed.
Any holes—other than designed holes—in the
Structure has no holes other than
structure.
designed holes.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -26 of 33
Record Date:1/6/21025 2:39 PAI King County, WA
Chah drod leading to gate is missing or damaged.
Chain is in place and works as
designed.
Orifice Plate
Damaged or missing
Control device is not working property due to
Plate is in place and works as
missing, out of place, or bent orifice plate-
designed.
Obstructions
Any trash, debris, sediment, or vegetation
Plate is free of all obstructions and
blocking the plate-
works as designed.
Overflow, Pipe
Obstructions
Any trash or debris blocking (or having the
Pipe is free of all obstructions and
potential of blocking) the overflaw pipe.
works as designed.
Deformed or
Lip of overflow pipe is bent or deformed-
Overflow pipe does not allow
damaged lip
overflow at an elevation lower than
design
InlettOullet Pipe
Sediment
Sediment filling 20% or more of the pipe.
inlet/outlet pipes clear of sediment.
accumulation
Trash and debris
Trash and debris accumulated in inleVoutlet
No trash or debris in pipes.
pipes (includes floatables and non-floalables).
Damaged
Cracksv6der than '/,inch at the joint of the
No cracks more than %-inch wide at
Wettoutlet pipes or any evidence of soil entering
the joint of the inietJoutlet pipe,
at the joints of the inlettoutl iit pipes.
Metal Grates
Unsafe grate opening
l.. Grate with opening wider than "Is inch,
i
Grate opening meets design
(if Applicable)
standards.
Trash and debris
Trash and debris that is blocking more ti
of trash and debris,
of grate surface.
footnote to guidelines for disposal
Damaged or missing
Grate missing or broken member(s) of the grate.
Grate is in place and meets design
standards.
Lid
Manhole Cover/Lid
Coverilid not in place
Covedlid is missing or only partially in place.
Cover/lid protects opening to
Any open structure requires urgent
structure,
maintenance.
Locking mechanism
Mechanism cannot be opened by one
Mechanism opens with proper tools.
Not Working
maintenance person Will proper tools. Bolts
cannot be seated. Self-locking coverilid does not
work.
Cover/lid difficult to
One maintenance person cannot remove
CoverAid can be removed and
Remove
coverflid after applying 80 lbs. of lift,
reinstalled by one maintenance
person.*
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -27 of 33
Record Date:1/6/21025 2:39 PM King County, WA
20.16 Surface Water Design Manual — Appendix A
EM
4/2412016
is located immediately in front of the catch basin
opening or is blocking capacity of the catch basin
potentially blocking entrance to
catch basin.
by more than 10%.
No trash or debris in the catch
Trash or debris in the catch basin that exceeds
'1,1 the depth from the bottom of basin to invert
basin.
the lowest pipe into or out of the basin.
No dead animals or vegetation
111 Dead animals or vegetation that could generate
odors that could cause complaints or dangerous
present within catch basin.
gases (e -g., methane).
No condition present which would
Deposits of garbage exceeding 1 cubic foot In
volume,
attract or support the breeding of
insects or rodents.
Damage to frame Corner of frame extends more than'/. inch pact
Frame is even with curb.
and/or top slab curb face into the street ;if applicable).
Top slab is free of holes and cracks.
Top slab has holes larger than 2 square inches
or cracks wider than % inch.
Frame is sitting flush an top slab.
Frame not sitting flush on top slab, i.e..
separation of more than % Inch of the frame from
the lop 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
basin through cracks, or maintenance person
structurally sound,
judges that catch basin is unsound.
(No cracks more than '14 inch wide at
Cracks wider than % inch and longer than I foot
at the joint of any inlettoutlet pipe or any
the joint of inietloullet pipe.
evidence of soil particfes entering catch basin
through cracks.
Settlement/ Catch basin has settled more than I inch or has
I Basin replaced or repaired to design
misalignment rotated more than 2 inches out of alignment.
standards.
Damaged pipe joints Cracks wider than %Anch at the joint of the
imetloutlet pipes or any evidence of soil entering
j No cracks more than '/-'rich wide at
the joint of inlet/outlet pipes.
the catch basin at the joint of the inieYoutlet
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 BIVIPs implemented if
appropriate. No contaminants
present other than a surface oil film.
lifiet/Outlet Pipe j
Sedirneril Sediment filling 20% or more of the pipe.
inlet/outlet pipes clear of sediment,
accumulation
Trash and debris Trash and debris accumulated in inlethoutlet
No trash or debris in pipes.
pipes (includes floatables and non-floatables).
Damaged Cracks wider than 'A -Inch at the joint of the
allettoutiet pipes or any evidence of soil entering
I at the joints of the inlebbutlet pipes.
No cracks more than V. -inch wide at
the joint of the inlettoullet pipe.
20.16 Surface Water Design Manual — Appendix A
EM
4/2412016
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -28 of 33
Record Date:11612025 2:39 PM King County, WA
Any open structure requires urgent
maintenance.
Manhole Coverllid I Cover/lid not in place � Covenlid is missing or only partially in place.
Any open structure requires urgent
maintenance.
Cover/lid protects opening to
structure.
I Locking mechanism Mechanism cannot be opened by one Mechanism opens with proper tools.
si Not Working maintenance person with proper tools. Bolts
i cannot be seated. Self-locking cover/lid does not
i I work. E
Cover/lid difficult to !i! One maintenance person cannot remove
Removes # cover/iid after applying 80 @s, of lift.
Coverllid can be removed and
reinstalled by one maintenance
person.
4124/2016 2015 Surface Water Design Manual —Appendix A
A-10
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -29 of 33
Record Date:1/6/21025 2:39 PM King County, WA
2016 Surface Water Design Manual - Appendix A 412412016
A-1 I
pollution
as -oil, gasoline, concrete slurries or paint.
according to applicable regulations.
Source control BMPs implemented if
�Darm.,.
appropriate. No contaminants
Present other than a surface oil film.
to p;oiacuve
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
Pipe repaired or replaced.
of pipe by more than 20% or
I have weakened structural integrity of the pipe.
Ditches
Trash and debris
Trash and debris exceeds I cubic foot per 1,000
Trash and debris cleared from
square feet of ditch and slopes.
ditches.
Sediment
Accumulated sediment that exceeds 20% of the
Ditch cill neGIVushed or sit
accumulation
design depth-
sediment and debris so that it
matches design.
Noxious weeds
Any noxious or nuisance vegetation which may
Noxious and nuisance vegetation
constitute a hazard to County personnel or the
removed according to applicable
public.
regulations. No danger of noxious
vegetation where County personnel
or the public might normally be.
Contaminants and
Any evidence of contaminants or pollution such
Materials removed and disposed of
pollution
as oil, gasoline, concrete slurries or paint
according to applicable regulations.
I Source control SMPs implemented if
appropriate. No contaminants
present other than a surface oil film.
'vegetation
Vegetation that reduces free movement of water
Water flows freely through ditches
through ditches.
Erosion damage to
Any erosion observed on a ditch slope.
Slopes are not eroding.
slopes
Rock lining out of I
One layer or less of rock exists above native sell
Replace rocks to design standards.
place or missing (if
area 5 square feet or more, any exposed native
Applicable)
soiL
2016 Surface Water Design Manual - Appendix A 412412016
A-1 I
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -30 of 33
Record Date:116/2025 2:39 PM King County, WA
1 the faciffty.
facility.
Gontarnrnants and
! Any evidence of contaminants or pollution such
Materials removed and disposed of
pollution
as oils, gasoline, concrete slurries or paint,
according to applicable regulations.
Source control ®MPs implemented if
i appropriate. No contaminants
present other than a surface oil film.
Life cycle
System has not been inspected for three years.
Facility is re -inspected and any
needed maintenance performed.
Vault Treatment Sediment on vault
Greater than 2 inches of sediment.
Vault is free of sediment.
Area floor
I
Sediment on tap of
� Greater than !inch of sediment.
� Vault is free of sediment.
f cartridges
j Multiple scum lines
Thick or multiple scum fines above top of _..
Cause of plugging corrected, 1
r
above top of
cartridges. Probably due to plugged canisters or
canisters replaced if necessary.
caZZIgtes
underdrain manifold,
Vault Structure Damage to wall,
Cracks wider than %-inch and any evidence of
Vault replaced or repaired to design
Frame, Bottom,
soil particles entering the structure through the
specifications.
and/or Top Slab
cracks, or qualified inspection personnel
determines the vault is not structurally sound.
Baffles damaged
Baffles corroding, cracking warping, andlor
Repair or replace baffles to
shouting signs of failure as determined by
specification.
maintenance/inspection person.
Filter Media Standing water in
9 inches or greater of static water in the vault for
No standing water in vault 24 hours
vault
more than 24 hours following a rain event and/or
after a rain event.
overflow occurs frequently. Probably due to
plugged filter media, underdrain or outlet pipe.
Short circuiting
Flows do not propedy enter filter cartridges.
Flows go through filter media.
Underdrains and Sedimentidebris
Underdrains or clean -outs partially plugged or
Underdrains and clean -outs free of
Glean -Outs
filled with sediment and/or debris.
sediment and debris.
Inlet/Outlet Pipe Sediment
Sediment filling 20% or more of the pipe.
mietlout?et pipes clear of sediment
accumulation
NoshI and debris
Trash and debris accumulated in inlet/outlet
No trash or debris in pipes.
pipes (includes ftoatables and non-floatables).
Damaged
Cracks wider than f inch at the joint of the
No cracks more than I -'inch wide at
mletloutiet pipes or any evidence of soil entering
1 the joint of the inlet/outlet pipe.
at the joints of the inletioutlet pipes.
i
Access Manhole Cover/lid not in place
Coverilid is missing or only partially in place.
Manhole access covered.
Any open manhole requires immodiate
maintenance.
Locking mechanism
Mechanism cannot be opened by one
Mechanism opens with proper tools.
not working
maintenance person with proper fools. Bolts
cannot be seated. Self-locking coverifid does not
work.
Covertlid difficult to
One maintenance person cannot remove
Govartiid can be removed and
'....... remove
coverlfid after applying &ti lbs of lift,
reinstalled by one maintenance
person_
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -31 of 33
Record Date:1/6/2025 2:39 PM King County, WA
Gaps, doesn't cover
completely
I Large access doors not fiat and/or access
opening not completely covered.
Doors close flat and cover access
opening completely.
Lifting Rings missing,
Lifting rings not capable of lifting weight of door
Lifting rings sufficient to lift or
rusted
or plate,
remove door or plate.
Inspection
Frequency
Maintenance conditions are site-specific,
inspect Stormfifter facility for any
depending on pollutant loading.
maintenance deficiencies; maintain
FIRST YEAR POST CONSTRUCTION, Monthly
or replace as required per
established site-specific schedule
during wet season, every other month during dry
and manufacturers requirements.
FALLOWING FIRST YEAR: Continue monthly
tit site-specific frequency is established, then
follow that schedule
AT A MINIMUM, FOLLOWING FIRST YEAR:
Annually (or quarterly if used as primary
treatment) and following significant storms.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -32 of 33
Record Date:1/6/21025 2:39 PM King County, WA
Vault Treatment
Sediment
Sediment accumulates exceeds 6 inches in the
No sediment in the vault.
Area
I I accumulation
Vault.
Discharge water not
Inspection of discharge water shows obvious
Effluent discharge is clear.
clear
signs of poor water quality- effluent discharge
from vault shows thick visible sheen.
Trash or debris
Any trash and debris accumulation in vault
Vault is clear of trash and debris.
accumulation
(floatables and non-noatables)-
01 accumulation
Oil accumulations that exceed I inch, at the
No Visible oil depth on water.
surface of the water in the cari'viater separator
chamber.
Vault structure
i Damage to Wall,
Cracks wider than or evidence of soil
Vault replaced or repaired to design
Frame, Bottom,
particles entering the structure through the
specifications.
andior Top Slab
cracks, or maintenance/inspection personnel
determines that the vault is not structurally
sound.
Baffles damaged
Baffles corroding, cracking, warping and/or
Repair or replace baffies to
showing signs of failure as determined by
specifications.
maintenance inspection personnel.
Gravity Drain
Inoperable Valve
Valve will not open and close.
Valve opens and closes normally.
Valve won't seal
Valve does not seal completely
Valve completely seats closed.
friletiOutlet Pipe
Sediment
Sediment filling 201 or more of the pipe.
Inletioutlet pipes clear of sediment.
accumulation
Trash and debris
sacc umulated in inletfoutlet
Trash and debri,
No trash or debris in pipes
pipes (includes floatables and non-floatables).
Damaged
Cracks wider than X finch at the jointof the
No cracks more than %-ineh wide at
inlet/outlet pipes or any evidence of saiil entering
the joint of the inlet(outlet pipe.
at the joints of the inlet/outlet pipes.
Access Manhole
Cover/lid not in place
Coverhid is missing or only partially in place.
Manhole access covered_
Anyopen manhole requires immediate
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 coverilid does
not work
Coverfild difficult to
One maintenance person cannot remove
CoverPHd can be removed and
romove
covedild after applying 80 Ida of lift.
reinstalled by one maintenance
person.
Ladder rungs unsafe
Missing rungs, misalignment, rust, or cracks.
Ladder meets design standards.
Allows maintenance person safe
access.
Large access
Damaged or difficult
Large access doors or plates cannot be
Replace or repair access door so it
doors/plate
to open
openediremoved using normal equipment,
can opened as designed
Gaps, doesn't cover
Large access doors not flat and/or access
Doors close flat and cover access
completely
opening not completely covered.
opening completely.
Lifting Rings missing,
Lifting rings not capable of lifting weight of door
Lifting rings sufficient to lift or
rusted
or cover/lid. I
remove coverdid.
Instrument Number: 20250106000614 Document: COV Rec: 5335.50 Page -33 of 33
Record Date:1/6/2025 2:39 PAI King County, WA
4/24/2016
Lva
2016 Surface Water Design Manual –:appendix A
Concrete, and
Permeable Pavers
Sediment Sediment accumulation ulation on the pavement
Pavement infiltrates as designed;
accumulation interfering with Infiltration; runoff from adjacent
adjacent areas stabilized_
areasdepositing sedimenVifebris on pavement.
Infiltration rate Pavement does not infiltrate at a rate of 10
Pavement infiltrates at a rate greater
inches per hour,
than 10 inches per hour.
Pending Standing water for a long period of time on the
Standing water infiltrates at the
surface of the pavement.
desired rate.
Broken or cracked Pavement is broken or cracked.
No broken pavement or cracks on
pavement
the surface of the pavement.
Settlement Uneven pavement surface indicating settlement
Pavement surface is uniformly level,
of the subsurface layer.
[_
Moss growth Moss growing on pavement interfering with
No moss interferes with Infiltration,
Infiltration.
Inflow inflow to the pavement is diverted, restricted, or
Inflow to pavement is unobstructed
depositing sediment and debris on the
and not bringing sediment or debris
pavement-
to the pavement,
Underdrain Underdrain is not flowing when pavement has
Underdrain flows ft" when water
been infiltrating water,
is present.
Overflow Overflow not controlling excess water to desired
Overflow permits excess water to
location; native soil is exposed or other signs of
leave the site at the desired location;
erosion damage are present.
Overflow is stabilized and
appropriately armored.
Permeable Pavers
Broken or missing Broken or missing paving blocks on surface of
No missing or broken paving blocks
pavers pavement.
Interfering with infiltration.
Level surface Uneven surface due to settlement or scour of fill
I Pavement surface is uniformly level.
in the interstices of the paving blocks.
Compaction Poor infiltration due to soil compaction between
No soil compaction in the interstices
paving blocks.
of the paver blocks limiting
infiltration.
Dead grass Grass lin-th..ritrsfices of the paving blocks is
Healthy grass is growing in the
dead
interstices of the paver blocks.
Inspection
F=requency Annually and after large storms, and as needed
Permeable pavement is functioning
seasonally to control leaf drop, evergreen
normally.
needles etc.
4/24/2016
Lva
2016 Surface Water Design Manual –:appendix A