HomeMy WebLinkAboutD_Tabor_Crowall_Brodell_Phase_2_Geo_Investivation_SME_CAE_FINALDEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
D_Tabor Crowall Brodell Phase 2 Geo Investivation_SME_CAE_FINAL
PLANNING DIVISION
CERTIFICATE OF EXEMPTION
FROM SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT AND
CRITICAL AREAS REGULATIONS
EVALUATION FORM & DECISION
DATE OF DECISION: May 27, 2025
PROJECT NUMBER: LUA25-000160, SME, CAE
PROJECT NAME: Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation
PROJECT MANAGER: Jill Ding, Senior Planner
APPLICANT/CONTACT: Julie Titchbourne, King County River and Floodplain Management
201 S Jackson St, Suite 5600, Seattle, WA 98104
OWNERS: City of Renton
1055 S Grady Way, Renton, WA 98057
Washington State Department of Transportation (WSDOT)
310 Maple Park SE, PO Box 47300, Olympia, WA 98504
PROJECT LOCATION: Riverview Park (APN 1623059033) and within the right-of-way (ROW) of State Route
169 (SR 169).
PROJECT DESCRIPTION: The applicant is requesting a Shoreline Exemption and Critical Areas Exemption
for Phase 2 Geotechnical Borings, Utility Potholing, and Cultural Resources Exploration for the Tabor-Crowall
and Brodell Revetment Repair Project. The Tabor-Crowall and Brodell Revetment Repair Project is a repair
project at the Tabor-Crowall and Brodell revetments along the Cedar River. Phase 1 Geotechnical Borings and
Utility Potholing occurred under LUA23-000048 in February 2023. Additional geotechnical borings and utility
potholing are now needed as the project design has been further developed. A total of three (3) geotechnical
borings are proposed. One (1) of these borings is within the sidewalk along the south side of SR169 to the
north of the Cedar River. Two (2) of these borings are located within Riverview Park on the south side of the
Cedar River. Approximately ten (10) hand-dug cultural resources explorations are proposed. The area of these
explorations is proposed along the north side of SR 169 between SE 5th St and the parking lot for the
Maplewood Golf Course. A total of twenty-four (24) utility potholes are proposed. Twelve (12) of these are
proposed near the Tabor-Crowall revetment on the right bank of the Cedar River on the south side, or within
SR 169. The other twelve (12) are proposed near the Brodell revetment within or proximate to the Cedar River
Trail along the south side of SR 169. None of the borings, explorations, or potholes would be located below
the ordinary high-water mark (OHWM) of the Cedar River or within wetlands. According to City of Renton
(COR) Maps, a 100-year flood plain and floodway; moderate and severe channel migration zones; sensitive
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Permit and CAE
Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation LUA25-000160, SME, CAE
Permit Date: May 27, 2025 Page 2 of 5
and protected slopes; high seismic hazard areas; wetlands; and wellhead protection areas, zone 1, zone 1
modified, and zone 2 are mapped on the project site. In addition, the project site is also located within the
Urban Conservancy and Shoreline High Intensity designation of reach C of the Cedar River, which is a
Shoreline of the State.
SEC-TWN-R: SW16-23-05 & NE 21-23-05
LEGAL DESCRIPTION:
(King County Assessor)
POR OF GOV LOT 3 & OF GOV LOT 5 IN SW 1/4 OF SEC 16-23-05 LY NLY OF
BURLINGTON RR R/W PACIFIC COAST RR LESS P S P & L CO TRANS LINE R/W
TGW POR OF GOV LOT 4 LY SLY OF SR 169 & SLY OF OLD CO RD NO 1140 -- SUBJ
TO ESMT OF P S P & L CO TRANS LINE TGW POR OF GOV LOT 2 & OF GOV LOT 4 -
BEG IN GOV LOT 4 AT INTSN OF SWLY R/W OF SR 169 AS EXISTED PRIOR TO
FEBRUARY 18, 1971 AND A LINE DAF - BAAP OPPOSITE HWY ENGR STATION
REFERRED TO AS HES 1494+21.74 ON SR 169 LINE SURVEY OF 169 RENTON
MAPLEWOOD TO JCT SR 405 & 57.85 FT SWLY THEREFROM TH NWLY TAP
OPPOSITE HES 1499 & 54.94 P C ON SAID SR 169 LINE SURVEY & 60 FT SWLY
THEREFROM TH NWLY WLY & SWLY PLW SAID SR 169 LINE SURVEY TAP
OPPOSITE HES 1504+00 THEREON TH SWLY TAP OPPOSITE HES 1505+50 ON
SAID SR 169 LINE SURVEY & 85FT SELY THEREFROM & END OF THIS LINE
DESCRIPTION TH NWLY WLY & SWLY ALG ABOVE DESCRIBED LINE TO
INTERSECTION OF SAID GOV LOT 2 WITH SAID SWLY R/W LINE TH SELY ALONG
SAID SWLY R/W LINE TO POB
WATER BODY/REACH: Cedar River, Reach C
CRITICAL AREA(S): 100-year flood plain and floodway; moderate and severe channel migration zones;
sensitive and protected slopes; high seismic hazard areas; wetlands; and
wellhead protection areas zone 1, zone 1 modified, and zone 2.
CRITICAL AREAS EXEMPTION JUSTIFICATION/DECISION: An exemption from critical area regulations, is
hereby APPROVED on the proposed project in accordance with RMC 4.3.050C “Exempt, Prohibited and
Nonconforming Activities” and for the following reasons:
Site investigative work is exempt from permit requirements within critical areas and associated buffers in
accordance with RMC 4.3.050C.3.b.ii Site Investigative Work, within Flood Hazard Areas, Geological Hazard
Areas, Streams and Lakes and Wellhead Protection Zones subject to the following standards:
Site investigative work necessary for land use application submittals such as surveys, soil logs, percolation
tests and other related activities. Investigative work shall not disturb any more than five percent (5%) of the
critical area and required buffer. In every case, impacts shall be minimized, and disturbed areas shall be
immediately restored at a one-to-one (1-1) ratio. Within shoreline jurisdiction, this includes the marking of
property lines or corners on state-owned lands, when such marking does not significantly interfere with the
normal public use of the surface water. Limitation on site exploration and investigative activities are defined
in WAC 173-27-040(2)(m) for properties within shoreline jurisdiction.
Staff Comment: The proposed work includes soil borings, hand dug archaeological explorations, and utility
potholing which would qualify as site investigative work. The work proposed would be to gather data for a
future land use development application submittal. As shown on the submitted plans, the borings, hand dug
archaeological explorations, and utility pothole locations would occur within a small footprint and would not
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City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Permit and CAE
Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation LUA25-000160, SME, CAE
Permit Date: May 27, 2025 Page 3 of 5
impact more than five percent (5%) of any critical area or buffer. Borings and potholes would be
approximately eight inches (8”) wide. All soil will be stockpiled adjacent to the borehole and replaced upon
completion of the work. Two (2) of the boring locations would require temporary fencing and all boring
locations would be restored to its current condition. Archaeological investigations would include eight- to
ten-inches (8”- 10”) wide shallow hand-dug holes needed to inform the cultural resources assessment. No
trees or shrubs would be removed or pruned for this work. All soil will be stockpiled adjacent to the hand-dug
holes and replaced upon completion of the work.
SHORELINE EXEMPTION JUSTIFICATION/DECISION: An exemption from a Shoreline Management
Substantial Development Permit is hereby Approved with Conditions* on the proposed project in
accordance with RMC 4-9-190C “Exemption from Permit System” and for the following reasons:
Site exploration and investigation activities that are prerequisites to preparation of an application for
development authorization under the Shoreline Master Program, if:
i. The activity does not interfere with the normal public use of the surface waters.
ii. The activity will have no significant adverse impact on the environment including, but not limited to
fish, wildlife, fish or wildlife habitat, water quality, and aesthetic values.
iii. The activity does not involve the installation of a structure, and upon completion of the activity the
vegetation and land configuration of the site are restored to conditions existing before the activity.
iv. A private entity seeking development authorization under the Shoreline Master Program first posts a
performance bond or provides other evidence of financial responsibility to the Planning Division to
ensure that the site is restored to pre-existing conditions.
v. The activity is not subject to the permit requirements of RCW 90.58.550.
Staff Comment: The proposed work includes soil borings, hand dug archaeological explorations, and utility
potholing which would qualify as site investigative work. As shown on the submitted plans, the proposed work
would not occur below the OHWM of the Cedar River or within any wetland areas and would not impact
normal public use of the Cedar River. As previously discussed above, the explorations would occur within a
small footprint and would not have a negative impact on fish and wildlife habitat. The proposed work would
not include the construction of any structures and all areas would be restored after work is completed. A
surety device would not be required as the work proposed would be conducted under the authority of King
County River and Floodplain Management, which is a public entity. The work proposed would not be subject
to permit requirements of RCW 90.58.550, which pertains to oil or gas exploration in marine waters.
CRITICAL AREA EXEMPTION FINDINGS: The proposed development is consistent with the following findings
pursuant to RMC section 4-3-050C.2.d:
i. The activity is not prohibited by this or any other provision of the Renton Municipal Code or State
or Federal law or regulation;
ii. The activity will be conducted using best management practices as specified by industry
standards or applicable Federal agencies or scientific principles;
iii. Impacts are minimized and, where applicable, disturbed areas are immediately restored;
iv. Where water body or buffer disturbance has occurred in accordance with an exemption during
construction or other activities, revegetation with native vegetation shall be required; and
v. If a hazardous material, activity, and/or facility that is exempt pursuant to this Section has a
significant or substantial potential to degrade groundwater quality, then the Administrator may
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Permit and CAE
Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation LUA25-000160, SME, CAE
Permit Date: May 27, 2025 Page 4 of 5
require compliance with the Wellhead Protection Area requirements of this Section otherwise
relevant to that hazardous material, activity, and/or facility. Such determinations will be based
upon site and/or chemical-specific data.
Staff Comment: The proposed explorations are not prohibited by any provision of the Renton Municipal Code
or State or Federal law or regulation. The proposed explorations would be conducted utilizing best
management practices. The proposed explorations are small in scope with the boring and potholes no wider
than ten inches (10”), and the hand dug archaeological excavations would be shallow and would not require
any pruning or removal of trees or shrubs. All soil would be stockpiled nearby and replaced upon completion
of the investigative work. No work is proposed within any water bodies and no trees or shrubs would be
removed. The work proposed does not include hazardous materials with the potential to degrade water
quality.
SHORELINE EXEMPTION FINDINGS: The proposed development is:
i. Consistent with the policies of the Shoreline Management Act.
ii. Not applicable to the guidelines of the Department of Ecology where no Master Program has been
finally approved or adopted by the Department.
iii. Consistent with the City of Renton Shoreline Master Program.
Staff Comment: As previously discussed above, the proposed geotechnical explorations would be
consistent with the policies of the Shoreline Management Act and would be consistent with the City of
Renton’s Shoreline Master Program. All impacts are anticipated to be temporary in nature and disturbed
areas would be restored.
*CONDITIONS OF APPROVAL:
1. Prior to work commencing, the applicant shall apply for and receive a Right of Entry permit from the
City of Renton Parks and Recreation Department.
2. Prior to work commencing, the applicant shall apply for and receive a Right-of-Way (ROW) permit
from the City of Renton Development Engineering Division.
3. All disturbances shall be restored at a minimum one-to-one (1-1) ratio.
DECISION: The Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation Critical Areas and Shoreline
Substantial Development Permit Exemption, LUA25-000160, SME, CAE is hereby Approved with
Conditions.
SIGNATURE & DATE OF DECISION:
_____________________________________ ______________________________
Matthew Herrera, Planning Director Date
RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be
reopened by the approval body. The approval body may modify his decision if material evidence not readily
discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After
review of the reconsideration request, if the approval body finds sufficient evidence to amend the original
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
5/27/2025 | 2:52 PM PDT
City of Renton Department of Community & Economic Development Certificate of Exemption from Shoreline Substantial Development Permit and CAE
Tabor/Crowall & Brodell Phase 2 Geotechnical Investigation LUA25-000160, SME, CAE
Permit Date: May 27, 2025 Page 5 of 5
decision, there will be no further extension of the appeal period. Any person wishing to take further action
must file a formal appeal within the 14-day appeal time frame.
APPEALS: This administrative land use decision will become final if not appealed in writing to the
Hearing Examiner on or before 5:00 PM on June 10, 2025. An appeal of the decision must be filed within
the 14-day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Appeals must be submitted
electronically to the City Clerk at cityclerk@rentonwa.gov or delivered to City Hall 1st floor Lobby Hub Monday
through Friday. The appeal fee, normally due at the time an appeal is submitted, will be collected at a future
date if your appeal is submitted electronically. The appeal submitted in person may be paid on the first floor
in our Finance Department. Appeals to the Hearing Examiner are governed by RMC 4-8-110 and additional
information regarding the appeal process may be obtained from the City Clerk’s Office,
cityclerk@rentonwa.gov.
EXPIRATION: Two (2) years from the date of decision (date signed).
ATTACHMENTS: Project Narrative, Plan Set, Traffic Control Plan, Phase 1 Shoreline and Critical Areas
Exemption (LUA23-000048)
cc:
Washington State Department of Transportation (WSDOT) / Owner
Julie Titchbourne, King County River and Flood Management / Applicant
Joe Farah, City of Renton / Authorized Representative
Steve Brown / Parks Maintenance Manager
Duffy McColloch, WSDOT
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2025_0507_rev02_projectnarrativecedarriverrightbankrevrepair.docx 1
May 7, 2025
City of Renton – Planning Division
1055 S. Grady Way
Renton, WA 98057
Subject: Project Narrative for Additional (Phase 2) Geotechnical Borings, Utility Potholing, and
Cultural Resources Exploration for the Tabor-Crowall and Brodell Revetment Repair
Project
To Whom it May Concern:
The Tabor-Crowall and Brodell Revetment Repair Project (the Project) is a repair project at the
Tabor-Crowall and Brodell revetments along the Cedar River within the City of Renton. See
Attachment 1: Tabor-Crowall Revetment Repair – Cover Sheet and Vicinity Map (Sheet 1/A-001) and
Brodell Revetment Repair - Cover Sheet and Vicinity Map (Sheet 1/B-001) for locations of the Tabor-
Crowall and Brodell revetments, respectively.
The Tabor-Crowall site is located in the southwest quarter of Section 16, Township 23 N,
Range 05 E, W.M. The Brodell site is located in the northeast quarter of Section 21, Township 23 N,
Range 05 E, W.M. All borings, potholes, and cultural resources explorations will occur within
Riverview Park, on tax parcel 162305-9033 or within SR169 right-of-way (ROW).
Previous geotechnical borings and utility potholing occurred in February 2023 for the Project under
Phase 1, but additional geotechnical borings and utility potholing are needed as the design has
been further developed. See Attachment 2 – shoreline and critical areas exemption – from those
February 2023 activities for Phase 1.
Proposed Phase 2 activities include geotechnical borings, cultural resources explorations, and utility
potholing, as described in detail below. None of the borings, explorations, or potholes will be
located below the ordinary high water mark (OHWM) of the Cedar River or within wetlands.
We request a shoreline/critical areas exemption to perform all three of these geotechnical borings
on May 22 and 23, 2025 because of the availability and scheduling of Holocene as the
geotechnical driller. Should the City of Renton not want this team to conduct the T1-24 boring (see
Attachment 1 for location) that requires a lane closure on these dates ahead of the Memorial Day
weekend, we could perform that T1-24 boring at a later date and instead focus on T2-24 and T3-
24 on these days (traffic control of SR169 not needed for T2-24 and T3-24).
Geotechnical Borings
A total of three (3) geotechnical borings are proposed as part of this Phase 2.
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One (1) of these borings is within the sidewalk along SR169 to the north of the
Cedar River. This boring requires SR169 traffic control (ID: T1-24, Sheet 3/A-101).
Two (2) of these borings are located within Riverview Park across the river from
SR169. Traffic control of SR169 is not required (ID: T2-24, Sheet 3/A-101; and ID: T3-
24, Sheet 4/A-102).
See Attachment 3: Traffic Control Plans (TCPs) for these Phase 2 activities. The TCP shows a
proposed temporary lane closure of the southernmost eastbound lane while the
geotechnical boring T1-24 right next to SR169 is performed. More information on access
and approach for this boring T1-24 is included later in this letter.
Cultural Resources Exploration
Approximately ten (10) hand-dug cultural resources explorations are needed for this
Project. The area of these explorations is along the north side of SR169 between SE 5th
Street and the parking lot for the Maplewood Golf Course.
Utility Potholing
A total of twenty-four (24) utility potholes are proposed as part of this Phase 2.
Twelve (12) of these are planned near the Tabor-Crowall revetment on the right
bank of the Cedar River on the south side, or within SR169.
Twelve (12) of these are planned near the Brodell revetment within/proximate to the
Cedar River Trail along the south side of SR169. The proposed utility pothole
locations are shown by color (storm/sewer = green, communications/power = red,
water = blue). The design team is in contact with utility owners, including: The City
of Renton, King County Wastewater Treatment Division (WTD), and Seattle Public
Utilities (SPU), in addition to owners of the electrical and telecom utilities. See the
TCP, which shows a proposed temporary lane closure while the utility potholes right
along SR169 are performed.
Per Renton Municipal Code (RMC) 4-3-050.C.3.4, site investigative work is an exempt activity within
critical areas and buffers (which include the Cedar River buffer) if the work will not disturb more
than 5% of the critical area or buffer. Impacts must also be minimized, and disturbed areas must be
restored at a 1:1 ratio. The proposed project will meet these requirements.
Per RMC 4-9-190.C. the project is an exempt activity under the Shoreline Master Program based on
the following conditions: (1) The activity does not interfere with the normal public use of surface
waters; (2) The activity will have no significant adverse impact on the environment including, but
not limited to fish, wildlife, fish or wildlife habitat, water quality, and aesthetic values; (3) The activity
does not involve the installation of a structure and upon completion of the activity the vegetation
and land configuration of the site are restored to conditions existing before the activity; (4) A
private entity seeking development authorization under the Shoreline Master Program first posts a
performance bond or provides other evidence of financial responsibility to the Planning Division to
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2025_0507_rev02_projectnarrativecedarriverrightbankrevrepair.docx 3
ensure that the site is restored to pre-existing conditions; (5) The activity is not subject to the
permit requirements of RCW 90.50.550.
These proposed activities will be conducted as follows:
1. UTILITY LOCATES: An 811 One-Call will be initiated at geotechnical boring locations, utility
potholing locations, and at locations of cultural resources hand-dug exploration locations
ahead of those activities (see items 2, 3, and 4 below). Applied Professional Services (APS)
(under contract with Jacobs) will, in parallel, perform private utility locates at these
locations, placing paint on the pavement and/or turf to mark utilities. (NOTE: These utility
locates do not require disturbance of ground surface.)
2. GEOTECHNICAL BORINGS: Holocene (geotechnical driller) will perform geotechnical
borings with the oversight of Jacobs. See the site plan for planned locations, which are all
three (3) at Tabor-Crowall. Borings will be approximately 8 inches wide. All soil will be
stockpiled adjacent to the borehole and replaced upon completion of the work.
Access, Traffic Control, Vegetation Impacts/Restoration for Geotechnical Borings:
Tabor-Crowall Cedar River right bank (sidewalk next to SR169): One (1) boring (see
Attachment 1, boring ID: T1-24) up to 80 feet in depth will be conducted within the
sidewalk next to SR169. A temporary lane closure is requested to perform this
boring of the eastbound curb lane. See attached TCP for vehicle and pedestrian
closures/detours. It is anticipated that the lane closure could be up to six (6) hours.
It is anticipated that this temporary lane closure would happen in the morning
hours and be demobilized ahead of the afternoon rush hour on SR169. Holocene
will access the location via the SR169 roadway from Riverview Park. No vegetation
will be impacted by these activities. The area will then be restored to its current
condition.
Tabor-Crowall Cedar River left bank (Riverview Park): Two (2) borings (see
Attachment 1, boring ID: T2-24 and T3-24) up to 30 feet in depth will be conducted
within Riverview Park on the left bank of the Cedar River (across the river from
SR169). A Jacobs archaeologist will be present to observe borings and note if any
cultural resources are discovered during boring activities. Holocene will access the
locations with a tracked vehicle via the Cedar River Trail railroad bridge. No Cedar
River Trail or roadway closures are required for these borings, but spotters will be
used both during borings and also during access via the Cedar River Trail.
Temporary fencing will be used during these activities and removed afterwards.
Boring locations are next to the forested riparian vegetation just south of the river.
Vegetation in this area includes Douglas fir, red alder, and Himalayan blackberry.
Minor shrub or tree pruning may be necessary for this boring, but tree removal will
not be necessary. Park users will be instructed to avoid the two nearby benches.
The area will then be restored to its current condition.
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3. UTILITY POTHOLING: APS, with the oversight of Jacobs, will perform utility potholing. See
Attachment 1 for planned locations.
Method of Potholing: Potholing will be accomplished by using one of two methods –
shallow or deep – depending on the anticipated depth of the utility:
Shallow (for storm/sewer [green], communications [red] potholes: by a vacuum
mounted on the back of small pick-up truck and the hole is typically less than 8
inches wide. All excavated material will be replaced upon completion of work. The
area will then be restored to its current condition.
Deep (for water [blue] specifically the SPU water transmission line): by hydrovac
excavation; hole is typically 8-10 inches wide. Excavated material will be replaced
with new backfill material, and removed material will be hauled and disposed of.
The area will then be restored to its current condition.
Access, Traffic Control, Vegetation Impacts/Restoration for Potholing:
Tabor-Crowall: Potholing for communications/electrical (red) will occur using a
vacuum mounted on the back of a small pick-up truck. Potholes next to SR169 will
be performed during traffic control setup per Attachment 3 (with lane closure).
Potholing for storm (green) may require opening a storm maintenance hole lid in
the travel lane; therefore, this work will also need to be performed during lane
closure. See Attachment 3 for lane closure plan and pedestrian detour/access plan.
No vegetation will be impacted by these activities. The area will then be restored to
its current condition.
Brodell: Traffic control setup will be required for potholes next to SR169 per
Attachment 3 (with lane closure). Access to the pothole locations along the Cedar
River Trail will be via the trail just to the west, from the eastbound travel lane on
SR169. This is the same access location that was used for borings and potholing at
this location in February 2023. See Attachment 3 for lane closure plan and
pedestrian detour/access plan. Minor shrub and tree pruning will be required at this
location to perform the communications (red) potholing along SR169, and possibly
some to accomplish the water (blue) potholing along the trail next to the Cedar
River. The area will then be restored to its current condition.
4. CULTURAL RESOURCES EXPLORATIONS: Jacobs will perform shallow hand-dug holes
needed to inform the cultural resources assessment. See Attachment 1 for planned
locations, all along the proposed Cedar River Trail detour, north of SR169. No traffic control
or details are required for this work. No trees or shrubs will be removed or pruned for this
work. All soil will be stockpiled adjacent to the hole and replaced upon completion of the
work.
King County Water and Land Resources (WLRD) Division has hired Jacobs as the design consultant
for this work. Subconsultants and vendors under contract with Jacobs include Herrera (permitting
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2025_0507_rev02_projectnarrativecedarriverrightbankrevrepair.docx 5
support), APS (traffic control, utility potholing), Kleinfelder (laboratory analysis of geotech boring
samples) and Holocene (geotech driller).
If you have any questions regarding this project, please contact me at lhansen@herrerainc.com or
via phone at 360.939.3755.
Sincerely,
Herrera Environmental Consultants, Inc.
Liliana Hansen, PWS
Senior Scientist
CC:
Julie Titchbourne, King County Water and Land Resources Division (WLRD)
Mark Bodnar, King County Water and Land Resources Division (WLRD)
Amy Carlson, Jacobs
Dustin Atchison, Jacobs
Jacob Rector, Jacobs
Paul Tissell, Jacobs
Attached:
1. Tabor-Crowall Revetment Repair Plans and Brodell Revetment Repair Plans
2. Certificate of Exemption from Shoreline Substantial Development Permit and Critical Areas
Regulations (for Phase 1 geotechnical borings and potholing).
3. Traffic Control Plans for Tabor-Crowell and Brodell Revetment Repair, Phase 2 Borings,
Potholing, and Cultural Resources Exploration
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Attachment 1. Tabor-Crowall Revetment Repair Plans and Brodell
Revetment Repair Plans
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Attachment 1
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Cultural resources hand-dug test holes in this area (of proposed Cedar River Trail temporary detour)
between SR169 and Golf Course Fence
hand-dug test holes to be at 30 meter spacing (or greater) between Maplewood Ave SE and 131st Ave SE
(where the proposed CRT detour will end and connect back in with the CRT).
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Attachment 3. Traffic Control Plans for Tabor-Crowall and Brodell
Revetment Repair, Phase 2 Borings, Potholing, and Cultural
Resources Exploration
RECEIVED
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PLANNING DIVISION
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
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2025_0507_rev02_projectnarrativecedarriverrightbankrevrepair.docx 7
Attachment 2. Certificate of Exemption from Shoreline Substantial
Development Permit and Critical Areas Regulations (for Phase 1
geotechnical borings and potholing).
RECEIVED
05/19/2025 jding
PLANNING DIVISION
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
DEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
D_CedarRiversLevee_220713_v2
PLANNING DIVISION
CERTIFICATE OF EXEMPTION
FROM SHORELINE SUBSTANTIAL DEVELOPMENT PERMIT AND
CRITICAL AREAS REGULATIONS
EVALUATION FORM & DECISION
DATE OF DECISION:
PROJECT NUMBER:
PROJECT NAME:
PROJECT MANAGER:
APPLICANT/CONTACT:
OWNER:
PROJECT LOCATION:
February 23, 2023
LUA23-000048, SME, CAE
Cedar River Geo-technical Borings and Fiber Optic Line Potholing
Andrew Van Gordon, Associate Planner
Julie Titchbourne, King County River and Floodplain Management
201 S Jackson St, Suite 5600, Seattle, WA 98104
Washington State Department of Transportation (WSDOT)
310 Maple Park SE, PO Box 47300, Olympia, WA 98504
APN 2123059019, adjacent to SR 169 and APN 1623059033 on the right bank of
the Cedar River.
PROJECT DESCRIPTION: The applicant is requesting a Shoreline Exemption and Critical Area Exemption for the
purpose of geotechnical boring and fiber optic line potholing at two (2) locations (Tabor-
Crowall Site and Brodell Site) on the right bank of the Cedar River. The boring and
potholing would occur between the Ordinary High-Water Mark (OHWM) of the Cedar
River and the edge of pavement of State Route 169 (SR 169); proposed work would be
within the highway right-of-way. The boring and potholing are necessary for future
revetment repair along the Cedar River and SR 169.
The proposal is within the Shoreline High Intensity designation and is within Reach C of
the Cedar River. Proposed work would occur as close as approximately 20 feet (20')
landward of the OHWM. Work would consist of four (4) potholing locations of the fiber
optic line and three (3) geotechnical borings. No tree removal or tree pruning is
anticipated to be necessary. Light pruning of shrubs is expected. Parking lot access for
Riverview Park from SR 169 is proposed to be cordoned off so that the parking lot can
be used as an equipment staging area. A separate right-of-entry permit approved by City
of Renton Parks and Recreation would be required.
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4B Attachment 2Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
Certificate ofExemption from Shoreline Substantial Development Permit and CAECityofRentonDepartmentofCommunity & Economic Development
Cedar River Geotechnical Borings and Fiber Optic Line Potholing LUA23-000048, SME, CAE
Permit Date: February 23, 2023 Page 2 of 4
SEC-TWN-R: SW16-23-05 & NE21-23-05
LEGAL DESCRIPTION:
King County Assessor)
POR OF GOV LOT 3 & OF GOV LOT 5 IN SW 1/4 OF SEC 16-23-05 LY NLY OF
BURLINGTON RR R/W PACIFIC COAST RR LESS P S P & L CO TRANS LINE R/W TGW POR
OF GOV LOT 4 LY SLY OF SR 169 & SLY OF OLD CO RD NO 1140 -- SUBJ TO ESMT OF P
S P & L CO TRANS LINE TGW POR OF GOV LOT 2 & OF GOV LOT 4 - BEG IN GOV LOT 4
AT INTSN OF SWLY R/W OF SR 169 AS EXISTED PRIOR TO FEBRUARY 18, 1971 AND A
LINE DAF - BAAP OPPOSITE HWY ENGR STATION REFERRED TO AS HES 1494+21.74 ON
SR 169 LINE SURVEY OF 169 RENTON MAPLEWOOD TO JCT SR 405 & 57.85 FT SWLY
THEREFROM TH NWLY TAP OPPOSITE HES 1499 & 54.94 P C ON SAID SR 169 LINE
SURVEY & 60 FT SWLY THEREFROM TH NWLY WLY & SWLY PLW SAID SR 169 LINE
SURVEY TAP OPPOSITE HES 1504+00 THEREON TH SWLY TAP OPPOSITE HES 1505+50
ON SAID SR 169 LINE SURVEY & 85FT SELY THEREFROM & END OF THIS LINE
DESCRIPTION TH NWLY WLY & SWLY ALG ABOVE DESCRIBED LINE TO INTERSECTION
OF SAID GOV LOT 2 WITH SAID SWLY R/W LINE TH SELY ALONG SAID SWLY R/W LINE
TO POB
WATER BODY/REACH: Cedar River, Reach C
CRITICAL AREA(S): Other Flood Areas (Zone X – 500 Year Flood), Channel Migration Zone, Sensitive Slopes,
Protected Slopes, High Seismic Hazard Area, Zone 1 Modified Maplewood Wellhead
Protection Area, Zone 2 Downtown Wellhead Protection Area
CRITICAL AREAS EXEMPTION JUSTIFICATION/DECISION: An exemption from critical area regulations, is hereby
APPROVED on the proposed project in accordance with RMC 4.3.050C “Exempt, Prohibited and Nonconforming
Activities” and for the following reasons:
Site investigative work is exempt from permit requirements within critical areas and associated buffers in
accordance with RMC 4.3.050C3bii Site Investigative Work, within Flood Hazard Areas, Geological Hazard Areas,
Streams and Lakes and Wellhead Protection Zones subject to the following standards:
Site investigative work necessary for land use application submittals such as surveys, soil logs, percolation tests and
other related activities. Investigative work shall not disturb any more than five percent (5%) of the critical area and
required buffer. In every case, impacts shall be minimized, and disturbed areas shall be immediately restored at a
one-to-one (1-1) ratio. Within shoreline jurisdiction, this includes the marking of property lines or corners on state-
owned lands, when such marking does not significantly interfere with the normal public use of the surface water.
Limitation on site exploration and investigative activities are defined in WAC 173-27-040(2)(m) for properties
within shoreline jurisdiction.
SHORELINE EXEMPTION JUSTIFICATION/DECISION: An exemption from a Shoreline Management Substantial
Development Permit is hereby Approved with Conditions* on the proposed project in accordance with RMC 4-9-
190C “Exemption from Permit System” and for the following reasons:
Site exploration and investigation activities that are prerequisites to preparation of an application for development
authorization under the Shoreline Master Program, if:
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
Certificate ofExemption from Shoreline Substantial Development Permit and CAECityofRentonDepartmentofCommunity & Economic Development
Cedar River Geotechnical Borings and Fiber Optic Line Potholing LUA23-000048, SME, CAE
Permit Date: February 23, 2023 Page 3 of 4
i.The activity does not interfere with the normal public use of the surface waters.
ii.The activity will have no significant adverse impact on the environment including, but not limited to fish,
wildlife, fish or wildlife habitat, water quality, and aesthetic values.
iii.The activity does not involve the installation of a structure, and upon completion of the activity the
vegetation and land configuration of the site are restored to conditions existing before the activity.
iv.A private entity seeking development authorization under the Shoreline Master Program first posts a
performance bond or provides other evidence of financial responsibility to the Planning Division to ensure
that the site is restored to pre-existing conditions.
v.The activity is not subject to the permit requirements of RCW 90.50.550.
CRITICAL AREA EXEMPTION FINDINGS: The proposed development is consistent with the following findings
pursuant to RMC section 4-3-050C2d:
i.The activity is not prohibited by this or any other provision of the Renton Municipal Code or State or
Federal law or regulation;
ii.The activity will be conducted using best management practices as specified by industry standards or
applicable Federal agencies or scientific principles;
iii.Impacts are minimized and, where applicable, disturbed areas are immediately restored;
iv.Where water body or buffer disturbance has occurred in accordance with an exemption during
construction or other activities, revegetation with native vegetation shall be required; and
v.If a hazardous material, activity, and/or facility that is exempt pursuant to this Section has a significant
or substantial potential to degrade groundwater quality, then the Administrator may require
compliance with the Wellhead Protection Area requirements of this Section otherwise relevant to that
hazardous material, activity, and/or facility. Such determinations will be based upon site and/or
chemical-specific data.
SHORELINE EXEMPTION FINDINGS: The proposed development is:
i.Consistent with the policies of the Shoreline Management Act.
ii.Not applicable to the guidelines of the Department of Ecology where no Master Program has been
finally approved or adopted by the Department.
iii.Consistent with the City of Renton Shoreline Master Program.
CONDITIONS OF APPROVAL:
1.Prior to work commencing, the applicant shall apply for and receive a right-of-entry permit from City of
Renton Parks and Recreation.
DECISION: The Cedar River Geotechnical Borings and Fiber Optic Line Potholing Critical Areas and Shoreline
Substantial Development Permit Exemption, LUA23-000048, SME, CAE is hereby Approved with Conditions.
SIGNATURE & DATE OF DECISION:
Vanessa Dolbee, Planning Director Date
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4B
2/23/2023 | 11:03 AM PST
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
Certificate ofExemption from Shoreline Substantial Development Permit and CAECityofRentonDepartmentofCommunity & Economic Development
Cedar River Geotechnical Borings and Fiber Optic Line Potholing LUA23-000048, SME, CAE
Permit Date: February 23, 2023 Page 4 of 4
RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by
the approval body. The approval body may modify his decision if material evidence not readily discoverable prior
to the original decision is found or if he finds there was misrepresentation of fact. After review of the
reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be
no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within
the 14-day appeal time frame.
APPEALS: This administrative land use decision will become final if not appealed in writing to the
Hearing Examiner on or before 5:00 PM on March 9, 2023. An appeal of the decision must be filed within
the 14-day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Appeals must be submitted electronically to
the City Clerk at cityclerk@rentonwa.gov or delivered to City Hall 1st floor Lobby Hub Monday through Friday.
The appeal fee, normally due at the time an appeal is submitted, will be collected at a future date if your
appeal is submitted electronically. The appeal submitted in person may be paid on the first floor in our Finance
Department. Appeals to the Hearing Examiner are governed by RMC 4-8-110 and additional information
regarding the appeal process may be obtained from the City Clerk’s Office, cityclerk@rentonwa.gov.
EXPIRATION: Two (2) years from the date of decision (date signed).
Attachments: Project Narrative, Site Plan
cc:
WSDOT - Owner
Julie Titchbourne, King County River and Flood - Applicant
Joe Farah, City of Renton – Authorized Representative
Duffy McColloch, WSDOT
John Klochak, King County River and Flood
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
1
Project Narrative for
Geotechnical Borings and Fiber Optic Line Potholing
for the Tabor-Crowall and Brodell Revetment Repair Project
The proposed geotechnical borings and fiber optic line potholing for Tabor-Crowall and Brodell
Revetment Repair Project includes conducting exploratory geotechnical boring in three locations
and fiber optic line potholing in four locations on the south side of State Route (SR) 169, within the
road right-of-way (ROW), located within shoreline jurisdiction (Cedar River). The boring and
potholing are necessary for future revetment repair along the Cedar River and SR 169. Two future
revetment repairs are proposed along the Cedar River and are referred to as the “Tabor-Crowall”
site (near Riverview Park) and the “Brodell” site (southwest of the Maplewood Golf Course). See
attached site plan exhibits (Figure 1).
The Tabor-Crowall site is located in the southwest quarter of Section 16, Township 23 N,
Range 05 E, W.M. The Brodell site is located in the northeast quarter of Section 21, Township 23 N,
Range 05 E, W.M. The locations of the boring and potholing are shown on the attached site plans (
Figures 2 and 3).
The project will be conducted as follows:
1. First, 811 one-call will be initiated at boring locations (total of three) and at utility potholing
locations (total of four). Applied Professional Services (APS) will, in parallel, perform private
utility locates at these locations, placing paint on the pavement and/or turf to mark utilities.
2. Next, APS will perform potholing of the fiber optic line in four locations, two at each
revetment repair site. See attached site plan exhibits (Figures 1, 2, and 3) for the location of
the potholes. Potholing will be accomplished by a vacuum mounted on the back of small
pick-up truck and the hole is typically less than 8-inches wide. All excavated material will be
replaced upon completion of work. The area will then be reseeded and restored to current
conditions. Potholing will be conducted as follows:
a. Fiberoptic Utility pothole #1: located at Tabor-Crowall revetment, close to Boring
location T2. APS will access location from the parking area of Riverside Park.
Pedestrians will have access to the bridge over the river. Vehicles will have access to the
parking lot, although one of the two lanes in/out will be closed for parking of
equipment. See traffic control plan (TCP) 1 (Figure 4).
b. Fiberoptic Utility pothole #2: located at Tabor-Crowall revetment site, close to Boring
location T1. APS will access the location by driving up and over the sidewalk onto the
grassy area. Sidewalk closure will not be necessary.
c. Fiberoptic Utility pothole #3: located at the Brodell revetment site, next to the Cedar
River Trail. This work will be accomplished without closing the trail. Signage will warn
trail users to walk, or to walk their bikes next to equipment See TCP 2. Access will be via
access trail to the west. No tree removal or tree pruning will be necessary to accomplish
RECEIVED
PLANNING DIVISION
02/16/2023
AVanGordon
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
2
this work. Light pruning of shrubs may be necessary between SR 169 and the Cedar
River Trail to access this location, but no shrubs will be removed.
d. Fiberoptic Utility pothole #4: located at the Brodell revetment site next to the Cedar
River Trail. This work will be accomplished without closing the trail. Signage will warn
trail users to walk, or to walk their bikes next to equipment See TCP 2. Access will be via
access trail to the west. No tree removal or tree pruning will be necessary to accomplish
this work. Light pruning of shrubs may be necessary between SR 169 and the Cedar
River Trail to access this location, but no shrubs will be removed.
3. Lastly, the geotechnical borings will take place. Borings will be approximately 8 inches wide
and will be drilled from equipment mounted on the back of a small truck. All soil will be
stockpiled adjacent to the borehole and replaced upon completion of the work. The
exposed soil will then be reseeded and restored to current conditions. The boring work will
be conducted as follows:
a. T1, located near the Tabor-Crowall revetment: This boring location will be accessed by
bringing the truck/rig over the curb and sidewalk to that location. Geotechnical driller
Holocene will bring ‘mud mats’ to protect the turf. No closure of sidewalk, roadway, or
trail is required. A piezometer will be placed in this boring to monitor groundwater
levels. After borings are complete, the piezometer will be accessed via foot and cable
download.
b. T2, located near the Tabor-Crowall revetment: This boring location will be accessed via
the Riverview Park parking lot. The boring location is in the mowed grassy area just to
the east of the park entrance. Pedestrians will have access to the bridge over the river.
Vehicles will have access to the parking lot, although one of the two lanes in/out will be
closed for parking equipment. See the attached traffic control plan (TCP) 1 (Figure 4).
c. B1, located at the Brodell revetment: This boring is planned for the edge of the
pavement of the Cedar River Trail. This work will be performed without closing the trail.
Signage will be placed to warn trail users to walk or to walk their bikes next to
equipment (see TCP 2, Figure 4). Access to this boring will be via the access trail to the
west. A piezometer will be placed in this boring for monitoring groundwater levels.
Access to this piezometer after the borings will be via foot and via cable download.
Figure 1. King County Tabor Revetment Repair Exhibit (Overview)
Figure 2. King County Tabor Revetment Repair Exhibit (Boring and Pothole Locations for
Tabor-Crowall Site)
Figure 3. King County Tabor Revetment Repair Exhibit (Boring and Pothole Locations for
Brodell Site)
Figure 4. Traffic Control Plans
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
RECEIVED
PLANNING DIVISION
02/16/2023
AVanGordon
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
RECEIVED
PLANNING DIVISION
02/16/2023
AVanGordon
Estimated OHWM
not surveyed or
flagged)
boring T2 planned for this grassy area
proximate to entrance of Riverview
Park; see photo below
boring T1 planned for
grassy area here;
accessed up and
over curb and into
grassy area; see
photo below
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
RECEIVED
PLANNING DIVISION
02/16/2023
AVanGordon
Estimated OHWM
not surveyed or
flagged)
Access to Cedar River Trail proposed from access
path to the west of proposed boring location
Location of Installed
Gate
Proposed Boring B1 location (on edge of
pavement of Cedar River Trail)
DocuSign Envelope ID: 92A27575-81BB-4138-B315-93FFAE548D4BDocusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
N JOHN GARDIN
APS Inc. NORTH BEND, WA
TCS# 011864
JOHNG@APSLOCATES.COM
425) 864-5547
LEGEND
CONE
WORK AREA
SPOTTER
PED PATH
Date:1/30/2023 Author:John Gardin Project:6511 VAC
Comments:
this plan is for Jacobs
King County WLRD Tabor Revetment
TCP 2
NOT TO SCALE
SIGNS WILL BE EVENLY SPACED
WORK HOURS 7:00AM-5:00PM
SPEED
LIMIT
35
SIGN SPACING=X(FEET) (1)FREEWAYS & EXPRESSWAYS 55/70 MPH 1500+/(OR AS PER
MUCD)
RURAL HIGHWAYS 60/65 MPH 800'+
RURAL ROADS 45/55 MPH 500'+
RURAL ROADS & URBAN ARTERIALS 35/40 MPH 350'+
RURAL ROADS, URBAN ARTERIALS 25/30 MPH 200'+
RESIDENTIAL & BUSINESS DISTRICTS
URBAN STREETS 25/-MPH 100'+
ALL SIGNS ARE 48" BY 48" BLACK ON ORANGE UNLESS
OTHERWISE DESIGNATED.
1) All spacing may be adjusted toaccommodate interchange ramps,
at-grade intersections, and driveways
2) The spacing may be reduced in urban areas tofitroadway conditions
Lane
Width
Feet
MINIMUM TAPER LENGTH (L) IN FEET
Posted Speed Limit
10
11
12
105 150 205 265 450 500 550
115 165 225
25 30 35 40 45 50 55 60 65 70
295 495 550 605 660
125 180 245 325 540 600 660 720 780 840
DEVICE SPACING
MPH
50/70
25/30
35/45
40
20
30
80
40
60
TAPER TANGENT
650700600
715 770
4' WIDTH MAINTAINEDWALKYOURBIKE***WALKYOURBIKEUTILITYWORKAHEADUTILITYWORKAHEADSR
169 131ST AVE
SEwww.
invarion.com
RECEIVED PLANNING DIVISION
02/
22/2023 AVanGordon DocuSign Envelope ID: 92A27575-81BB-www.invarion
.com
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836
N JOHN GARDIN
APS Inc. NORTH BEND, WA
TCS# 011864
JOHNG@APSLOCATES.COM
425) 864-5547
LEGEND
CONE
WORK AREA
SPOTTER
PED PATH
Date:1/30/2023 Author:John Gardin Project:6511 VAC
Comments:
this plan is for Jacobs
King County WLRD Tabor Revetment
TCP 1
NOT TO SCALE
SIGNS WILL BE EVENLY SPACED
WORK HOURS 7:00AM-5:00PM
SPEED
LIMIT
35
SIGN SPACING=X(FEET) (1)FREEWAYS & EXPRESSWAYS 55/70MPH 1500+/(ORASPER
MUCD)
RURALHIGHWAYS 60/65MPH 800'+
RURAL ROADS 45/55 MPH 500'+
RURALROADS & URBAN ARTERIALS 35/40 MPH 350'+
RURALROADS, URBANARTERIALS 25/30MPH 200'+
RESIDENTIAL & BUSINESS DISTRICTS
URBANSTREETS 25/-MPH 100'+
ALLSIGNS ARE48" BY48" BLACK ONORANGEUNLESS
OTHERWISE DESIGNATED.
1) Allspacingmay beadjusted toaccommodate interchange ramps,
at-gradeintersections, anddriveways
2) Thespacingmaybereducedin urbanareastofit roadway conditions
Lane
Width
Feet
MINIMUMTAPER LENGTH (L) INFEET
Posted Speed Limit
10
11
12
105 150 205 265 450 500 550
115 165 225
25 30 35 40 45 50 55 60 65 70
295 495 550 605 660
125 180 245 325 540 600 660 720 780 840
DEVICESPACING
MPH
50/70
25/30
35/45
40
20
30
80
40
60
TAPER TANGENT
650700600
715 770
ROADWORKAHEADR
O
A
D
W
O
R
K
A
H
E
A
D
ROADWORKAHEADPEDESTRIAN ROUTE
PEDESTRIAN ROUTE
PEDESTIRIAN
BRIDGE TO CROSS
CEDAR RIVER
SIDEWALK TO REMAIN OPEN
SR 169
SE 5TH ST
LEFT LANECLOSEDAHEADAREACLOSEDwww.invarion.
com DocuSign Envelope ID: 92A27575-81BB-4138-B315-www.invarion
.com
Docusign Envelope ID: 4CF12173-6CF9-41F7-B16A-79C46EE34836