HomeMy WebLinkAboutC_ERC_Determination_Agency_Letter_ForestTerrace_181019.pdf
cc: King County Wastewater Treatment Division Ramin Pazooki, WSDOT, NW Region
Boyd Powers, Department of Natural Resources Larry Fisher, WDFW
Karen Walter, Fisheries, Muckleshoot Indian Tribe Duwamish Tribal Office
Melissa Calvert, Muckleshoot Cultural Resources Program US Army Corp. of Engineers
Gretchen Kaehler, Office of Archaeology & Historic Preservation Washington State Department of Ecology
October 19, 2018
Washington State
Department of Ecology
Environmental Review Section
PO Box 47703
Olympia, WA 98504-7703
Subject: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION
Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the
Environmental Review Committee (ERC) on October 15, 2018:
SEPA DETERMINATION: Determination of Non-Significance - Mitigated (DNS-M)
PROJECT NAME: Forest Terrace Preliminary Plat, PR18-000081
PROJECT NUMBER: LUA18-000124, ERC, PP, MOD
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on November 2,
2018, 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 information regarding the appeal process may
be obtained from the City Clerk’s Office, (425) 430-6510.
Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions,
please call me at (425) 430-6593.
For the Environmental Review Committee,
Matt Herrera
Senior Planner
Enclosure: ERC Determination, Mitigation Measures/Advisory Notes, Notice of Environmental Determination, and Environmental Checklist
(select recipients)
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.
DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT
Planning Division
1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2
www.rentonwa.gov
OF ENVIRONMENTAL DETERMINATION
ISSUANCE OF A DETERMINATION OF
NON-SIGNIFICANCE - MITIGATED (DNS-M)
POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION
DNSM: 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.
DATE OF NOTICE OF ENVIRONMENTAL
DETERMINATION:
October 19, 2018
PROJECT NAME/NUMBER: Forest Terrace Preliminary Plat / LUA18-000124,
ERC, PP, MOD
PROJECT LOCATION: 2611 and 2623 Union Ave NE / APNs 042305-9142
and 042305-9114
LOCATION WHERE APPLICATION MAY
BE REVIEWED:
Applicant documents are available online through the City of Renton
Document Center website. See also https://bit.ly/2MsHv3i
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
REVISED NOTICE
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.
Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on November 2, 2018,
together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady W ay, Renton, WA 98057.
Appeals to the Examiner are governed by City of RMC 4-8-110 and information regarding the appeal process may be
obtained from the Renton City Clerk’s Office, (425) 430-6510.
PUBLIC HEARING: A public hearing is tentatively scheduled for November 13, 2018 at 11:00 AM
before the Renton Hearing Examiner in Renton Council Chambers on the 7th
floor of Renton City Hall, located at 1055 South Grady Way. If the
Environmental Determination is appealed, the appeal will be heard as part of
this public hearing.
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ENV ENVIRONMENTAL
CHECKLIST
Planning Division
1055 South Grady Way-Renton, WA 98057
Phone: 425-430-7200 | www.rentonwa.gov
PURPOSE OF CHECKLIST: Governmental agencies use this checklist to help
determine whether the environmental impacts of your proposal are significant. This
information is also helpful to determine if available avoidance, minimization or
compensatory mitigation measures will address the probable significant impacts or if an
environmental impact statement will be prepared to further analyze the proposal.
INSTRUCTIONS FOR APPLICANTS: This environmental checklist asks you to describe
some basic information about your proposal. Please answer each question accurately
and carefully, to the best of your knowledge. You may need to consult with an agency
specialist or private consultant for some questions. You may use “not applicable” or
"does not apply" only when you can explain why it does not apply and not when the
answer is unknown. You may also attach or incorporate by reference additional studies
reports. Complete and accurate answers to these questions often avoid delays with the
SEPA process as well as later in the decision-making process.
The checklist questions apply to all parts of your proposal, even if you plan to do them
over a period of time or on different parcels of land. Attach any additional information that
will help describe your proposal or its environmental effects. The agency to which you
submit this checklist may ask you to explain your answers or provide additional
information reasonably related to determining if there may be significant adverse impact.
INSTRUCTIONS FOR LEAD AGENCIES: Additional information may be necessary to
evaluate the existing environment, all interrelated aspects of the proposal and an analysis
of adverse impacts. The checklist is considered the first but not necessarily the only
source of information needed to make an adequate threshold determination. Once a
threshold determination is made, the lead agency is responsible for the completeness
and accuracy of the checklist and other supporting documents.
USE OF CHECKLIST FOR NONPROJECT PROPOSALS: For nonproject proposals
(such as ordinances, regulations, plans and programs), complete the applicable parts of
sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D).
Please completely answer all questions that apply and note that the words "project,"
"applicant," and "property or site" should be read as "proposal," "proponent," and
"affected geographic area," respectively. The lead agency may exclude (for non-projects)
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questions in Part B - Environmental Elements –that do not contribute meaningfully to the
analysis of the proposal.
A. BACKGROUND
1. Name of proposed project, if applicable:
Forest Terrace
2. Name of applicant:
Pulte Homes of WA, Inc.
3. Address and phone number of applicant and contact person:
Applicant
Pulte Homes of WA, Inc.
3535 Factoria Boulevard S.E., No. 110
Bellevue, WA 98006
(425) 216-3466
Contact: Kyle Lublin
Contact Person
Barghausen Consulting Engineers, Inc.
18215 72nd Avenue South
Kent, Washington 98032
Contact: Ivana Halvorsen
4. Date checklist prepared:
February 2018, Revised June 2018
5. Agency requesting checklist:
City of Renton
6. Proposed timing or schedule (including phasing, if applicable):
Plat infrastructure construction is expected to occur in 2019. There are no plans to
phase the project. Construction of the project is expected to take 4 to 6 months for
site development and another 12 to 24 months for home construction, depending on
market conditions.
7. Do you have any plans for future additions, expansion, or further activity related to or
connected with this proposal? If yes, explain.
No.
8. List any environmental information you know about that has been prepared, or will be
prepared, directly related to this proposal.
· Preliminary Plat plan set prepared by Barghausen Consulting Engineers, Inc.
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· Geotechnical Report prepared by Terra Associates, Inc. dated July 19, 2017
· Wetland and Stream Reconnaissance prepared by Altmann Oliver Associate, LLC
dated May 20, 2017
· Arborist Report prepared by Tree Solutions Inc. dated December 15, 2017
· Boundary and Topographic Survey prepared by Axis Survey and Mapping dated
November 29, 2017
· Boundary Line Adjustment prepared by Barghausen Consulting Engineers, Inc.
· Preliminary Technical Information Report/Drainage Report prepared by
Barghausen Consulting Engineers, Inc. dated June 18, 2017
· Traffic Analysis Report prepared by Transportation Engineering Northwest LLC
(TENW) dated December 14, 2017
· Geotechnical Slope Stability Analysis prepared by Terra Associates, Inc. dated
June 18, 2018
9. Do you know whether applications are pending for governmental approvals of other
proposals directly affecting the property covered by your proposal? If yes, explain.
No pending applications or approvals are known.
10. List any government approvals or permits that will be needed for your proposal, if
known.
· City of Renton Preliminary Plat Approval
· City of Renton SEPA Determination
· City of Renton Modifications (Retaining Wall and Street Standards)
· City of Renton Variance (Alteration of a Protected Steep Slope)
· City of Renton Construction Plan Approvals (roads, storm, grading, and utilities)
· King County Right-of-Way Use Permit
· King County Off-Site Engineering Construction Permit (if applicable)
· Ancillary City of Renton Construction Permits, including Building Permits for
Retaining Walls
· Department of Natural Resources Forest Practice Application (if applicable)
· Department of Ecology NPDES Permit
· City of Renton Final Plat Approval
· City of Renton Building Permits for Residential Homes
· City of Renton Residential Design Standards Review
11. Give brief, complete description of your proposal, including the proposed uses and the
size of the project and site. There are several questions later in this checklist that ask
you to describe certain aspects of your proposal. You do not need to repeat those
answers on this page. (Lead agencies may modify this form to include additional
specific information on project description.)
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The project involves the subdivision of approximately 13.7 acres of land into 25
single-family homes and several tracts for access, utilities, and open space. There
will be approximately 1,356 lineal feet of public roadway (with utilities) constructed to
serve the proposed lots and approximately 484 lineal feet of frontage improvements
on Union Avenue N.E. An easement cooridor that contains Puget Sound Energy
power lines and Olympic Pipeline natural gas mains bisects the site.
12. Location of the proposal. Give sufficient information for a person to understand the
precise location of your proposed project, including a street address, if any, and
section, township, and range, if known. If a proposal would occur over a range of
area, provide the range or boundaries of the site(s). Provide a legal description, site
plan, vicinity map, and topographic map, if reasonably available. While you should
submit any plans required by the agency, you are not required to duplicate maps or
detailed plans submitted with any permit applications related to this checklist.
The subject property is located in Section 4, Township 23 North, Range 5 East and
abuts Union Avenue N.E. at 2611 Union Avenue N.E. Please reference the attached
Plan Set and Vicinity Map.
B. ENVIRONMENTAL ELEMENTS
1. EARTH
a. General description of the site
(check or circle one): Flat, rolling, hilly , steep slopes, mountainous, other
_____________
b. What is the steepest slope on the site (approximate percent slope)?
Slopes on the site approach 50 percent in localized areas.
c. What general types of soils are found on the site (for example, clay, sand, gravel,
peat, muck)? If you know the classification of agricultural soils, specify them and
note any agricultural land of long-term commercial significance and whether the
proposal results in removing any of these soils.
Soils on the site consist of Everett gravelly sandy loam (EvB, EvD) and Alderwood
gravelly sandy loam (AgD, AgC). These soils are considered prime farmland.
Historical use of the site for farmland is unknown; however, based on the King
County iMap 1936 aerial photos, it does not appear that the site has been used for
farm use.
d. Are there surface indications or history of unstable soils in the immediate vicinity?
If so, describe.
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The applicant is not aware of any history of unstable soils on site or in the vicinity.
The site is considered a low-seismic hazard area, high-erosion hazard area, and a
moderate-landslide hazard area pursuant to the geotechnical engineering report.
e. Describe the purpose, type, total area, and approximate quantities and total
affected area of any filling, excavation, and grading proposed. Indicate source of
fill.
The site will be mass graded to accommodate the proposed house sites and new
roads that will stub to adjacent properties to the north and west. Earthwork will be
balanced on site as much as possible; however, a complete balance may not be
possible. Approximately 80,000 cubic yards of cut and 110,000 cubic yards of fill
will constitute the grading. Approximately 30,000 cubic yards of fill is likely to be
imported during site development.
f. Could erosion occur as a result of clearing, construction, or use? If so, generally
describe.
Soil erosion could occur as a result of the site clearing, excavation, and grading
activities once soils are exposed to rainfall. However, as required by the City
Code, a Temporary Erosion and Sedimentation Control Plan (TESCP) will be
prepared and implemented to mitigate for such erosion potential. Additionally,
erosion control Best Management Practices (BMPs) will be provided (i.e., straw
mulch, silt fences, rock-check dams, etc.).
g. About what percent of the site will be covered with impervious surfaces after
project construction (for example, asphalt or buildings)?
The on-site impervious surface (roadways and sidewalks) will be approximately
61,300 square feet (1.41 acres), equaling approximately 10 percent of the gross
site area. Based on a maximum impervious area per lot of 80 percent, we have
estimated a total impervious area of approximately 201,520 square feet (4.63
acres).
Total 61,300 + 201,520 = 262,820 square feet (6.03 acres) = 44 percent of the
gross site area. The maximum allowed impervious area for the site is 50 percent.
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if
any:
All applicable BMPs and other typical and necessary TESC measures will be
implemented and maintained during the plat and home construction phases. An
NPDES permit will be acquired and the site will be monitored during the entire
buildout phase of the plat.
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2. AIR
a. What types of emissions to the air would result from the proposal during
construction, operation, and maintenance when the project is completed? If any,
generally describe and give approximate quantities if known.
During plat and home construction, emissions from construction equipment and
vehicles will occur on a temporary basis. When houses are completed, there will
be emissions generated from automobile, service truck traffic, and other typical
machinery used in single-family neighborhoods.
b. Are there any off-site sources of emissions or odor that may affect your proposal?
If so, generally describe.
The site is surrounded by existing single-family developments and a public school
that are the source of emissions from potential fireplaces and vehicles. In addition,
the site is located adjacent to Union Avenue N.E. which has moderate vehicular
traffic. These sources and emissions are typical of suburban communities and are
not expected to have any impact on the proposal.
c. Proposed measures to reduce or control emissions or other impacts to air, if any:
All construction equipment will be equipped to comply with all applicable air-quality
regulations. Dust will be controlled during the dry season with water trucks. Gas
fireplaces will be used in accordance with requirements of the Puget Sound Air
Quality Board.
3. WATER
a. Surface Water:
1) Is there any surface water body on or in the immediate vicinity of the site
(including year-round and seasonal streams, saltwater, lakes, ponds,
wetlands)? If yes, describe type and provide names. If appropriate, state what
stream or river it flows into.
There are no known surface waters on site or within 200 feet of the site.
Unregulated roadside ditches exist along Union Avenue N.E.
2) Will the project require any work over, in, or adjacent to (within 200 feet) the
described waters? If yes, please describe and attach available plans.
No site work will occur within 200 feet of any surface waters.
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3) Estimate the amount of fill and dredge material that would be placed in or
removed from surface water or wetlands and indicate the area of the site that
would be affected. Indicate the source of fill material.
The project does not propose to fill or dredge any surface waters. Existing off-
site roadside ditches may be cleaned and regraded.
4) Will the proposal require surface water withdrawals or diversions? Give
general description, purpose, and approximate quantities if known.
No.
5) Does the proposal lie within a 100-year floodplain? If so, note location on the
site plan.
No. The site is not mapped on FEMA or King County maps as flood plain.
6) Does the proposal involve any discharges of waste materials to surface
waters? If so, describe the type of waste and anticipated volume of discharge.
No.
b. Ground Water:
1) Will groundwater be withdrawn from a well for drinking water or other
purposes? If so, give a general description of the well, proposed uses and
approximate quantities withdrawn from the well. Will water be discharged to
groundwater? Give general description, purpose, and approximate quantities if
known.
The project will be served by public water and sanitary sewer service from the
City of Renton. The project will not involve any groundwater withdrawals or
any discharge to the groundwater of septic system effluent. No discharges to
the groundwater aquifer are proposed.
2) Describe waste material that will be discharged into the ground from septic
tanks or other sources, if any (for example: Domestic sewage; industrial,
containing the following chemicals. . . ; agricultural; etc.). Describe the general
size of the system, the number of such systems, the number of houses to be
served (if applicable), or the number of animals or humans the system(s) are
expected to serve.
None.
c. Water runoff (including stormwater):
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1) Describe the source of runoff (including storm water) and method of collection
and disposal, if any (include quantities, if known). Where will this water flow?
Will this water flow into other waters? If so, describe.
Stormwater will be collected by a series of catch basins and conveyed by
underground stormwater pipes to a water quality and detention vault in Tract A.
The stormwater facility will discharge to the north via a pipe system and the
roadside ditch along Union Avenue N.E.
Stormwater runoff generated by the lots, Tracts A and F, Road A, and the
Union Avenue N.E. frontage area will be routed to a detention vault.
Stormwater generated by Road B and Tract B will be routed to a detention
tank. The outfall from the detention vault and the detention tank discharges
into a StormFilter for basic water quality treatment. The discharge from the
StormFilter continues to a pipe system in Union Avenue N.E. which routes to
a drainage swale along Union Avenue N.E., which finally connects to an
existing catch basin at the intersection of Union Avenue N.E. and S.E. 95th
Way. The stormwater continues within the existing drainage system outlets
onto a hillside on the northern part of S.E. 95th Way which will eventually flow
to May Creek.
2) Could waste materials enter ground or surface waters? If so, generally
describe.
This is unlikely. As discussed above, all stormwater will be collected and
conveyed to new water quality facilities on site. All sewage disposals will be via
the public sewer system. No on-site septic systems are proposed.
3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of
the site? If so, describe.
No.
d. Proposed measures to reduce or control surface, ground, and runoff water, and
drainage pattern impacts, if any:
The project is designed to detain and treat stormwater pursuant to local and state
requirements. Discharge of stormwater is to the natural location.
4. PLANTS
a. Check the types of vegetation found on the site:
X deciduous tree: alder, maple, aspen, other
X evergreen tree: fir, cedar, pine, other
X shrubs
X grass
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pasture
crop or grain
orchards, vineyards or other permanent crops.
wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other
water plants: water lily, eelgrass, milfoil, other
other types of vegetation
b. What kind and amount of vegetation will be removed or altered?
Trees and understory plants will be removed in the development area and for
grading.
c. List threatened and endangered species known to be on or near the site.
The applicant is not aware of any threatened or endangered plant species known
to be on or near the site.
d. Proposed landscaping, use of native plants, or other measures to preserve or
enhance vegetation on the site, if any:
Trees will be retained on site pursuant to the arborist's report. Preserved trees and
vegetation will include maple and fir which are the dominant species on the site.
e. List all noxious weeds and invasive species known to be on or near the site.
No specific noxious weeds and invasive species are known to be on or near the
site.
5. ANIMALS
a. List any birds and other animals which have been observed on or near the site or
are known to be on or near the site.
No specific animals have been observed by the applicant; however, typical species
as noted below would be expected as flyovers (birds) or pass-through animals in a
typical suburban forest.
Examples include:
Birds: hawk , heron, eagle , songbirds , other:
Mammals: deer , bear, elk, beaver, other:
Fish: bass, salmon, trout, herring, shellfish, other
b. List any threatened and endangered species known to be on or near the site.
The applicant is not aware of any threatened or endangered animal species known
to be on or near the site.
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c. Is the site part of a migration route? If so, explain.
It is our understanding that the site is located in the "Western Flyway" migration
route.
d. Proposed measures to preserve or enhance wildlife, if any:
Some habitat will be provided on site through preservation of approximately
4.3 acres of permanent native open space (Tract E) that will provide some wildlife
habitat.
e. List any invasive animal species known to be on or near the site.
To our knowledge there are no invasive animal species known to be on or near the
site.
6. ENERGY AND NATURAL RESOURCES
a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to
meet the completed project's energy needs? Describe whether it will be used for
heating, manufacturing, etc.
Each lot will require power, natural gas, cable, and phone service. Power and
natural gas will be the primary source for heating.
b. Would your project affect the potential use of solar energy by adjacent properties?
If so, generally describe.
No.
c. What kinds of energy conservation features are included in the plans of this
proposal? List other proposed measures to reduce or control energy impacts, if
any:
All future homes will be designed in accordance with the Washington State Energy
Code. Also, as required by code, the streetlights will use LED luminaires to reduce
electrical consumption.
7. ENVIRONMENTAL HEALTH
a. Are there any environmental health hazards, including exposure to toxic
chemicals, risk of fire and explosion, spill, or hazardous waste that could occur as
a result of this proposal? If so, describe.
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This is unlikely. However, during construction there is always the risk of an
accident involving construction equipment and hazardous or flammable materials
during home construction. These risks are common to all construction sites.
The site is bisected by a regional utility corridor that contains natural gas mains
and power lines. The applicant will coordinate with the applicable utilities for
permits and construction methods near and around the power lines and the natural
gas main.
1) Describe any known or possible contamination at the site from present or past
uses.
There are none to our knowledge.
2) Describe existing hazardous chemicals/conditions that might affect project
development and design. This includes underground hazardous liquid and gas
transmission pipelines located within the project area and in the vicinity.
The site is bisected by a regional utility corridor that contains natural gas mains
and power lines. The applicant will coordinate with the applicable utilities for
permits and construction methods near and around the power lines and the
natural gas main.
3) Describe any toxic or hazardous chemicals that might be stored, used, or
produced during the project's development or construction, or at any time
during the operating life of the project.
During the construction of the project, there may be stored diesel fuel and/or
products. However, upon the completion of the construction, these materials
will not be present.
4) Describe special emergency services that might be required.
No special emergency services are anticipated.
5) Proposed measures to reduce or control environmental health hazards, if any:
The site is bisected by a regional utility corridor that contains natural gas mains
and power lines. The applicant will need to coordinate with the applicable
utilities for permits and construction methods near and around the power lines
and the natural gas main.
b. Noise
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1) What types of noise exist in the area which may affect your project (for
example: traffic, equipment, operation, other)?
Existing sources of noise in the immediate area are automobile traffic as well
as regional urban/suburban noises.
2) What types and levels of noise would be created by or associated with the
project on a short-term or a long-term basis (for example: traffic, construction,
operation, other)? Indicate what hours noise would come from the site.
During the construction phase, there will be short-term impacts to noise levels
from the operation of heavy equipment and truck traffic as well as contractor
tools. These impacts will be generated only during the hours of operation and
will terminate permanently upon completion of construction. Upon occupancy
of the homes, there will be added noise impacts from residential vehicles and
activities consistent with what is already found in the surrounding community.
3) Proposed measures to reduce or control noise impacts, if any:
All equipment and construction operations will comply with applicable City of
Renton noise ordinances.
8. LAND AND SHORELINE USE
a. What is the current use of the site and adjacent properties? Will the proposal affect
current land uses on nearby or adjacent properties? If so, describe.
Adjacent properties include residential development and a public school. The
proposed project is consistent with the surrounding properties.
b. Has the project site been used as working farmlands or working forest lands? If so,
describe. How much agricultural or forest land of long-term commercial
significance will be converted to other uses as a result of the proposal, if any? If
resource lands have not been designated, how many acres in farmland or forest
land tax status will be converted to nonfarm or non-forest use?
Historical use of the site for farmland is unknown; however, based on the King
County iMap 1936 aerial photos, it does not appear that the site or immediate
surrounding properties have been used for farming.
1) Will the proposal affect or be affected by surrounding working farm or forest land
normal business operations, such as oversize equipment access, the
application of pesticides, tilling, and harvesting? If so, how:
No. There is no existing farmland in the surrounding area.
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c. Describe any structures on the site.
One home exists on the site.
d. Will any structures be demolished? If so, what?
The existing home will be demolished.
e. What is the current zoning classification of the site?
R-4, low density residential 4 du/acre.
f. What is the current comprehensive plan designation of the site?
Residential Low Density.
g. If applicable, what is the current shoreline master program designation of the site?
The site is not within the shoreline jurisdiction.
h. Has any part of the site been classified as a critical area by the city or county? If
so, specify.
The site contains erosion and landslide hazard areas based on existing
topography.
i. Approximately how many people would reside or work in the completed project?
Based on the average household size of 2.77 people per household and the
average family size of 3.17 people per household, the expected population of the
plat is expected to be in the range of 69 to 79 residents.
j. Approximately how many people would the completed project displace?
The project will not displace any people.
k. Proposed measures to avoid or reduce displacement impacts, if any:
None.
l. Proposed measures to ensure the proposal is compatible with existing and
projected land uses and plans, if any:
As part of the preliminary plat process, the project will be reviewed in accordance
with the R-4 development standards which are compatible with the surrounding
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property. Development as planned is consistent with neighboring development
on both sides of the project.
m. Proposed measures to reduce or control impacts to agricultural and forest lands of
long-term commercial significance, if any:
Not applicable to this project. There is no agricultural or forest lands near the site.
9. HOUSING
a. Approximately how many units would be provided, if any? Indicate whether high,
middle, or low-income housing.
The project will create 24 new housing units in the middle-income range.
b. Approximately how many units, if any, would be eliminated? Indicate whether high,
middle, or low-income housing.
One house will be eliminated.
c. Proposed measures to reduce or control housing impacts, if any:
None.
10. AESTHETICS
a. What is the tallest height of any proposed structure(s), not including antennas;
what is the principal exterior building material(s) proposed?
The tallest structures would be the proposed single-family homes which have a
maximum height as established in the zoning code of 30 feet without a variance.
b. What views in the immediate vicinity would be altered or obstructed?
Development of the site will not obstruct any views.
c. Proposed measures to reduce or control aesthetic impacts, if any:
All future homes within the project are subject to the City's building design
standards.
11. LIGHT AND GLARE
a. What type of light or glare will the proposal produce? What time of day would it
mainly occur?
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Construction is expected to be in the daytime hours only (7 a.m. to 6 p.m. or 7
p.m.). During nighttime there may be streetlight illumination and car headlights as
well as both interior and exterior lighting in houses typically found in single-family
subdivisions.
b. Could light or glare from the finished project be a safety hazard or interfere with
views?
No.
c. What existing off-site sources of light or glare may affect your proposal?
None.
d. Proposed measures to reduce or control light and glare impacts, if any:
None.
12. RECREATION
a. What designated and informal recreational opportunities are in the immediate
vicinity?
Within 1 mile of the site are several recreation opportunities, including:
· Sierra Heights Elementary School
· Sierra Heights Park
· May Creek Park
· Honey Dew Park
· Kiwanis Park
b. Would the proposed project displace any existing recreational uses? If so,
describe.
The project will restrict and close to the public an informal trail within the power line
easement that people have been using for walking and biking.
c. Proposed measures to reduce or control impacts on recreation, including
recreation opportunities to be provided by the project or applicant, if any:
The project will pay park mitigation fees as required. Private on-site open space
will be retained for the residents of the project.
13. HISTORIC AND CULTURAL PRESERVATION
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a. Are there any buildings, structures, or sites located on or near the site that are over
45 years old listed in or eligible for listing in national, state, or local preservation
registers? If so, specifically describe.
According to the Assessor's records, the existing home on the site was built in
1954; however, the home is not listed in the preservation register.
b. Are there any landmarks, features, or other evidence of Indian or historic use or
occupation? This may include human burials or old cemeteries. Are there any
material evidence, artifacts, or areas of cultural importance on or near the site?
Please list any professional studies conducted at the site to identify such
resources.
The applicant is not aware of any historical cultural use of the site.
c. Describe the methods used to assess the potential impacts to cultural and historic
resources on or near the project site. Examples include consultation with tribes
and the department of archeology and historic preservation, archaeological
surveys, historic maps, GIS data, etc.
A search of the area on WISAARD database revealed no cultural or historic
resources near the site.
d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and
disturbance to resources. Please include plans for the above and any permits that
may be required.
In the event that cultural or historic artifacts are uncovered during construction, the
developer will stop work and contact local government, tribes, and an
archaeologist for additional review and permits as needed.
14. TRANSPORTATION
a. Identify public streets and highways serving the site or affected geographic area
and describe proposed access to the existing street system. Show on site plans, if
any.
The site is served by Union Avenue N.E., a minor arterial. A new public road will
be constructed opposite N.E. 27th Place.
b. Is the site or affected geographic area currently served by public transit? If so,
generally describe. If not, what is the approximate distance to the nearest transit
stop?
There are no transit stops or routes within 1/4 mile of the site. The Renton Bible
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Church Park and Ride lot located at 973 Union Avenue N.E. is approximately one
mile south of the project site.
c. How many additional parking spaces would the completed project or non-project
proposal have? How many would the project or proposal eliminate?
Each home will have two on-site parking stalls as required. No parking will be
eliminated.
d. Will the proposal require any new or improvements to existing roads, streets,
pedestrian, bicycle or state transportation facilities, not including driveways? If so,
generally describe (indicate whether public or private).
The project will improve Union Avenue N.E. along its frontage to meet the City of
Renton's (modified) Minor Arterial road standards. Improvements will include
pavement widening and the addition of a curb, gutter, sidewalk, planter strip with
street trees, and street lighting.
e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or
air transportation? If so, generally describe.
No. The site is not near water, rail, or air transportation.
f. How many vehicular trips per day would be generated by the completed project or
proposal? If known, indicate when peak volumes would occur and what
percentage of the volume would be trucks (such as commercial and non-
passenger vehicles). What data or transportation models were used to make these
estimates?
Based on the Traffic Impact Analysis prepared for the project, approximately 281
Average Daily Trips (ADT) and 27 PM Peak Hour trips will result from the
construction of new homes.
g. Will the proposal interfere with, affect or be affected by the movement of
agricultural and forest products on roads or streets in the area? If so, generally
describe.
There is no agricultural or forest activity in the area so the project will not impact
those activities.
h. Proposed measures to reduce or control transportation impacts, if any:
The project will construct frontage improvements on Union Avenue N.E. and new
roads, including stubs for future connections. Payment of traffic mitigation fees will
offset long-term traffic impacts.
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15. PUBLIC SERVICES
a. Would the project result in an increased need for public services (for example: fire
protection, police protection, public transit, health care, schools, other)? If so,
generally describe.
The future construction of homes on each of the 25 lots will result in a proportional
need for public services normally associated with single-family development such
as police, fire, health care, schools, postal service, garbage service, etc.
b. Proposed measures to reduce or control direct impacts on public services, if any.
Property tax revenue will assist with offsetting the proportional impact on public
services. Mitigation fees will be collected at the time of building permit for
individual lots to offset traffic, fire, and school impacts.
16. UTILITIES
a. Circle utilities are currently available at the site:
electricity ,
natural gas ,
water,
refuse service ,
telephone ,
sanitary sewer,
septic system,
other
b. Describe the utilities that are proposed for the project, the utility providing the
service, and the general construction activities on the site or in the immediate
vicinity which might be needed.
The project will install pipes 8 inches in diameter and larger on site and off site for
water, sewer, and/or stormwater utilities. Impacts to public or private property or
critical areas, if any, will be restored to pre-existing conditions.
· Water and Sewer: City of Renton
· Electricity and Natural Gas: Puget Sound Energy
· Refuse: Republic Services, Inc.
· Telephone: CenturyLink, Inc.
· Cable: Comcast Corporation
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C. SIGNATURE
The above answers are true and complete to the best of my knowledge. I understand
that the lead agency is relying on them to make its decision.
Proponent Signature:
Name of Signee (printed): Ivana Halvorsen
Position and Agency/Organization: Senior Planner, Barghausen Consulting Engineers, Inc.
Date Submitted: June 2018
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