HomeMy WebLinkAboutD_ERC Determination and Mitigation Measures_181019.pdf
DEPARTMENT OF COMMUNITY
AND ECONOMIC DEVELOPMENT
REVISED ENVIRONMENTAL (SEPA) DETERMINATION OF
NON-SIGNIFICANCE - MITIGATED (DNS-M)
PROJECT NUMBER: LUA18-000124, ERC, PP, MOD
APPLICANT: Ivana Halvorsen, Barghausen Consulting Engineers, Inc. /
ihalvorsen@barghausen.com / 18215 72nd Ave S, Kent, WA 98032
PROJECT NAME: Forest Terrace Preliminary Plat
PROJECT DESCRIPTION: Revision: Applicant applied for reconsideration of several mitigation measures,
resulting in an edit to mitigation measure #6, the addition of mitigation measure #7, and the renumbering of the original
mitigation measure #7 from #7 to #8.
Project applicant has requested an ERC reconsideration of DNS-M mitigation measure #6 that would require restoration
of Union Ave NE to current City standards from curb to curb along the property's frontage. The applicant is requesting
Preliminary Plat approval, Environmental Review (SEPA), Critical Areas Variance, and two (2) modifications to subdivide a
596,570 square foot (13.70 acre) site located at 2611 Union Ave NE (subject property) into 25 single -family residential
lots, four (4) open space tracts, and one (1) drainage tract. The subject property is located in the Residential-4 (R-4) zoning
classification and Residential Low Density Comprehensive Plan land use designation. Proposed lot sizes would range from
9,038 to 19,584 square feet with an overall density of approximately 2.14 dwellings per net acre. One (1) existing single-
family residence on the subject property would be removed. Access to the site would be via a new public residential access
street extending from Union Ave NE through the subject property with stubs for future connectivity along the north and
western property limits. The applicant would also construct frontage improvements on Union Ave NE along the subject
property and the frontage of 2623 Union Ave NE. Stormwater would be conveyed via a system of catch basins and storm
pipes throughout the development with flow control provided via two (2) detention tanks and one (1) detention vault
located on the northwest portion of the property. A proposed stormfilter would provide water quality treatment. New
eight (8) inch sewer and eight (8) inch water mains would be constructed within the subdivision's new public street and
connect to the existing sewer and water facilities located in Union Ave NE. The applicant has requested a critical areas
variance to remove an existing protected slope on the eastern portion of the subject property to construct a section of
the new internal public street with the remaining slope proposed to be replaced with a terraced retaining wall. The
applicant has requested a modification to the residential retaining wall height limitation of six (6) feet with proposed
rockeries up to 10-feet in height in the southwestern portion of the of the subject property. A second modification is
requested for frontage improvements along Union Ave NE for a modified minor arterial standard. A Lot Line Adjustment
(LUA18-000125) is also under review for the subject property and the abutting 2623 Union Ave NE that would alter the
abutting lot’s property lines to accommodate the proposed subdivision’s new public street alignment and frontage
improvements on Union Ave NE. The City’s Critical Areas map identifies potential regulated slopes on the property
between 25-40 percent with isolated areas greater than 40-percent. The applicant has proposed to retain 119 of the
subject property’s 847 viable trees. The applicant has submitted an arborist report, geotechnical report, transportation
impact analysis, and drainage report with the preliminary plat application.
PROJECT LOCATION: 2611 and 2623 Union Ave NE / APNs 042305-9142 and 042305-9114
LEAD AGENCY: City of Renton
Environmental Review Committee
Department of Community & Economic Development
DocuSign Envelope ID: 72D70994-8EC1-4420-A80D-6D24C6F66874
SIGNATURES:
Gregg Zimmerman, Administrator
Public Works Department
Date Rick M. Marshall, Administrator
Renton Regional Fire Authority
Date
Kelly Beymer, Administrator
Community Services Department
Date C.E. Vincent, Administrator Date
Department Of Community & Economic Development
The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse
impact on the environment. 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 aut hority 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 November 9, 2018.
Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady
Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained
from the Renton City Clerk’s Office, (425) 430-6510.
PUBLICATION DATE: October 19, 2018
DATE OF DECISION: October 15, 2018
2,
DocuSign Envelope ID: 72D70994-8EC1-4420-A80D-6D24C6F66874
10/15/2018 | 3:34 PM PDT10/15/2018 | 3:06 PM PDT
10/15/2018 | 3:37 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
DETERMINATION OF NON-SIGNIFICANCE – MITIGATED (DNS-M)
MITIGATION MEASURES AND ADVISORY NOTES
PROJECT NUMBER: LUA18-000124, ERC, PP, MOD
APPLICANT: Ivana Halvorsen, Barghausen Consulting Engineers, Inc. /
ihalvorsen@barghausen.com / 18215 72nd Ave S, Kent, WA 98032
PROJECT NAME: Forest Terrace Preliminary Plat
PROJECT DESCRIPTION: Project applicant has requested an ERC reconsideration of DNS-M
mitigation measure #6 that would require restoration of Union Ave NE to current City standards from curb to curb
along the property's frontage. The applicant is requesting Preliminary Plat approval, Environmental Review (SEPA),
Critical Areas Variance, and two (2) modifications to subdivide a 596,570 square foot (13.70 acre) site located at
2611 Union Ave NE (subject property) into 25 single-family residential lots, four (4) open space tracts, and one (1)
drainage tract. The subject property is located in the Residential-4 (R-4) zoning classification and Residential Low
Density Comprehensive Plan land use designation. Proposed lot sizes would range from 9,038 to 19,584 square
feet with an overall density of approximately 2.14 dwellings per net acre. One (1) existing single-family residence
on the subject property would be removed. Access to the site would be via a new public residential access street
extending from Union Ave NE through the subject property with stubs for future connectivity along the north and
western property limits. The applicant would also construct frontage improvements on Union Ave NE along the
subject property and the frontage of 2623 Union Ave NE. Stormwater would be conveyed via a system of catch
basins and storm pipes throughout the development with flow control provided via two (2) detention tanks and
one (1) detention vault located on the northwest portion of the property. A proposed stormfilter would provide
water quality treatment. New eight (8) inch sewer and eight (8) inch water mains would be constructed within the
subdivision's new public street and connect to the existing sewer and water facilities located in Union Ave NE. The
applicant has requested a critical areas variance to remove an existing protected slope on the eastern portion of
the subject property to construct a section of the new internal public street with the remaining slope proposed to
be replaced with a terraced retaining wall. The applicant has requested a modification to the residential retaining
wall height limitation of six (6) feet with proposed rockeries up to 10-feet in height in the southwestern portion
of the of the subject property. A second modification is requested for frontage improvements along Union Ave NE
for a modified minor arterial standard. A Lot Line Adjustment (LUA18-000125) is also under review for the subject
property and the abutting 2623 Union Ave NE that would alter the abutting lot’s property lines to accommodate
the proposed subdivision’s new public street alignment and frontage improvements on Union Ave NE. The City’s
Critical Areas map identifies potential regulated slopes on the property between 25-40 percent with isolated areas
greater than 40-percent. The applicant has proposed to retain 119 of the subject property’s 847 viable trees. The
applicant has submitted an arborist report, geotechnical report, transportation impact analysis, and drainage
report with the preliminary plat application.
PROJECT LOCATION: 2611 and 2623 Union Ave NE / APNs 042305-9142 and 042305-9114
LEAD AGENCY: The City of Renton
Department of Community & Economic Development
Planning Division
MITIGATION MEASURES:
1. Clearing and grading of the subject property shall be limited to May 1 to September 30.
2. The applicant shall comply with the recommendations of the Geotechnical Report, Protected Slope
Analysis, and Response to GeoEngineers Secondary Review Comments prepared by Terra Associates
Inc. dated July 19, 2017, June 18, 2018, and August 14, 2018, respectively, and any future addenda
to such reports.
3. The applicant’s geotechnical engineer shall review the project’s construction plans to verify
compliance with the geotechnical report(s). The geotechnical engineer shall submit a sealed letter
stating that he/she has reviewed the construction plans and in their opinion the plans and
specifications meet the intent of the report(s).
4. The applicant’s geotechnical engineer shall identify those construction activities where observation
onsite by a licensed geotechnical engineer should occur. Those identified activities shall be clearly
stated on the construction plans to be submitted for review and approval by the Civil Plan Reviewer.
5. The applicant’s geotechnical engineer shall seal and certify all rockeries and retaining walls
regardless of height on the construction plans and provide long term maintenance
recommendations for future homeowners.
6. If any utilities are constructed east and parallel of the centerline within Union Ave NE along the
subject property’s frontage, the applicant shall restore the Union Ave NE roadbed (curb to curb)
along the subject property’s frontage to current City Standards prior to final plat recording.
7. If utilities are only constructed west and parallel of the centerline within Union Ave NE along the
subject property’s frontage, the applicant shall restore the gaps, if found to not meet City standards,
between the trench restorations west and parallel of the centerline to current City standards prior
to final plat recording.
8. The applicant shall video the approved haul route prior to the beginning of construction to identify
the existing condition of the roadway. Following the completion of plat infrastructure, the applicant
shall video the haul route again and identify the post construction condition of the roadway. The
applicant shall repair the roadway to a condition equal or better to the condition of the initial video.
Repairs to the haul route shall be completed by the applicant and reviewed and approved by the
civil plan reviewer prior final plat recording.
ADIVISORY NOTES:
The following notes are supplemental information provided in conjunction with the administrative land use
action. Because these notes are provided as information only, they are not subject to the appeal process for the
land use actions.