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HomeMy WebLinkAboutERC_Committee Determination and Notice_20250317
DEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
ENVIRONMENTAL (SEPA) DETERMINATION OF
NON-SIGNIFICANCE - MITIGATED (DNS-M)
Project File Numbers: LUA25-000025, ECF, SSDP, MOD/PR25-000012
Project Name: Williams ADU/Garage
Applicant: Patty Thuman 13411 SE 151st St, Renton, WA 98058
Project Location: 13411 SE 151st St, Renton, WA 98058 (APN 2223059112)
Project Description: The applicant is requesting a Shoreline Substantial Development Permit,
Environmental (SEPA) Review, and a height modification for the construction of a two (2) story 1,012 square
foot detached accessory dwelling unit (ADU). The project site is a 37,744 sq uare foot lot within the Residential-
4 (R-4) zone that is currently developed with a single -family home and associated accessory structures. The
site is currently accessed via a residential driveway off of SE 151st St. A height modification is requested to
allow the proposed ADU to exceed the height of the existing single -family residence. According to the City of
Renton Maps (COR Maps), the project site is mapped with a Wellhead Protection Area Zone (Zone 2,
Maplewood Wellfield), Special Flood Hazard Areas (100 year flood, FEMA Zone-AE), Moderate to Severe
Channel Migration Zone Hazards, Regulated Shoreline High Intensity Environmental Designation, Regulated
Shoreline: CR-C Cedar River Reaches Jurisdiction, High Seismic Hazards, Regulated Slopes, and High Erosion
Hazards.
Lead Agency: City of Renton
Environmental Review Committee
Department of Community & Economic Development
Date of Decision: March 17, 2025
Mitigation Measures:
1. The applicant shall submit an Inadvertent Discoveries Plan prepared by a qualified professional
with the building permit for review and approval by the Current Planning Project Manager prior to
permit issuance.
The City of Renton Environmental Review Committee has determined that probable significant environmental
impacts from the proposed project can be mitigated. An Environmental Impact Statement (EIS) is not
required under RCW 43.21C.030(2)(c). Conditions were imposed as mitigation measures by the
Environmental Review Committee under their authority of Section 4-9-070D Renton Municipal Code. These
conditions are necessary to mitigate environmental impacts identified during the environmental review
process. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal
for fourteen (14) days.
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 31,
2025. Appeals must be submitted electronically to the City Clerk at cityclerk@rentonwa.gov or delivered to
Docusign Envelope ID: 22A8539B-6B4F-45E9-B44D-17C2E5317108
Environmental Review Committee Determination
March 17, 2025
Page 2 of 2
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.
SIGNATURES:
Martin Pastucha, Administrator
Public Works, Chair
Date Anjela Barton, Fire Marshal
Renton Regional Fire Authority
Date
Maryjane Van Cleave, Administrator
Parks and Recreation
Date Gina Estep, Administrator Date
Community and Economic Development
Docusign Envelope ID: 22A8539B-6B4F-45E9-B44D-17C2E5317108
3/17/2025 | 1:30 PM PDT
3/17/2025 | 1:27 PM PDT
forfor
3/17/2025 | 2:33 PM PDT
3/17/2025 | 1:28 PM PDT
DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT
Planning Division
1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2
www.rentonwa.gov
NOTICE OF ENVIRONMENTAL DETERMINATION ISSUANCE OF A
DETERMINATION OF NON-SIGNIFICANCE - MITIGATED (DNS-M)
POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION
DNS-M: After review of the completed environmental checklist and other information on file, the City of Renton
Environmental Review Committee (ERC) has determined that the proposed action has probable significant
impacts that can be mitigated through mitigation measures. This DNS-M is issued after using the optional DNS
process in WAC 197-11-355. An environmental impact statement (EIS) is not required under RCW
43.21C.030(2)(c). Please note that the issuance of this determination DOES NOT constitute approval of the
proposal.
DATE OF NOTICE OF ENVIRONMENTAL
DETERMINATION:
March 17, 2025
PROJECT NAME/NUMBER: PR25-000012 Thuman Residence ADU
LUA25-000025, ECF, SSDP, MOD
PROJECT LOCATION: 13411 SE 151st St (APN 2223059112)
APPLICANT/PROJECT CONTACT
PERSON:
Patty Thuman / 13411 SE 151st St Renton, WA 98058 /
pcthumann@hotmail.com
LOCATION WHERE APPLICATION
MAY BE REVIEWED:
Applicant documents are available online through the City of Renton
Document Center website. See also https://rb.gy/abx468
PROJECT DESCRIPTION: The applicant is requesting a Shoreline Substantial Development Permit,
Environmental (SEPA) Review, and a height modification for the construction of a two (2) story 1,012 square foot
detached accessory dwelling unit (ADU). The project site is a 37,744 sq uare foot lot within the Residential-4 (R-4)
zone that is currently developed with a single -family home and associated accessory structures. The site is
currently accessed via a residential driveway off of SE 151st St. A height modification is requested to allow the
proposed ADU to exceed the height of the existing single family residence. According to the City of Renton Maps
(COR Maps), the project site is mapped with a Wellhead Protection Area Zone (Zone 2, M aplewood Wellfield),
Special Flood Hazard Areas (100 year flood, FEMA Zone-AE), Moderate to Severe Channel Migration Zone Hazards,
Regulated Shoreline High Intensity Environmental Designation, Regulated Shoreline: CR -C Cedar River Reaches
Jurisdiction, High Seismic Hazards, Regulated Slopes, and High Erosion Hazards.
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on March 31, 2025.
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.
PUBLIC HEARING: If the Environmental Determination is appealed, an appeal public hearing will be set and all
parties of record will be duly notified in accordance with RCW 43.21C.110 and WAC 197-11-535.