HomeMy WebLinkAboutECF_SEPA_Env_Checklist_for_City_20210406_v1.pdf
ENVIRONMENTAL CHECKLIST
RENTON SCHOOL DISTRICT NO. 403
ELEMENTARY SCHOOL #16
March 2021
Prepared by the Environmental Consultant
For the Renton School District No. 403
Effective team solutions in project management, environmental and land use permitting,
civil engineering, and wetland resources.
Project
Elementary School #16
Applicant
Renton School District No. 403
Attn.: Matt Feldmeyer, Executive Director of
Capital Planning and Construction
Environmental/Permitting Consultant
Laura S. Brent, AICP
Brent Planning Solutions, LLC
March 2021
SEPA Environmental Checklist
Elementary School #16
i Renton School District No. 403
TABLE OF CONTENTS
A. BACKGROUND .......................................................................................................... 1
B. ENVIRONMENTAL ELEMENTS .............................................................................. 9
1. EARTH .................................................................................................................. 9
2. AIR ...................................................................................................................... 13
3. WATER ............................................................................................................... 14
4. PLANTS .............................................................................................................. 23
5. ANIMALS ........................................................................................................... 24
6. ENERGY AND NATURAL RESOURCES ....................................................... 26
7. ENVIRONMENTAL HEALTH ......................................................................... 27
8. LAND AND SHORELINE USE ........................................................................ 32
9. HOUSING ........................................................................................................... 41
10. AESTHETICS ..................................................................................................... 42
11. LIGHT AND GLARE ......................................................................................... 43
12. RECREATION .................................................................................................... 43
13. HISTORIC AND CULTURAL PRESERVATION ........................................... 44
14. TRANSPORTATION ......................................................................................... 45
15. PUBLIC SERVICES ........................................................................................... 50
16. UTILITIES .......................................................................................................... 51
C. SIGNATURE ............................................................................................................. 52
List of Figures
Figure 1 – Vicinity Map ...................................................................................................... 4
Figure 2 – Site Parcel Map .................................................................................................. 5
Figure 3 – Site Aerial Map .................................................................................................. 6
Figure 4 – CUP Site Plan ..................................................................................................... 7
Figure 5 – Landscape Site Plan ........................................................................................... 8
Figure 6 – Grading Plan ..................................................................................................... 11
Figure 7 – Drainage Control Plan ...................................................................................... 12
Figure 8 – Wetland Delineation Sketch ............................................................................. 16
Figure 9 – Sound Level Measurement (SLM) and Receptor Locations ............................ 29
Figure 10 – Zoning Map .................................................................................................... 33
Figure 11 – Comprehensive Plan Map .............................................................................. 34
Tables
Table 1 – Measured Existing Sound Levels (dBA) ........................................................... 28
Table 2 – Typical Construction Noise ............................................................................... 30
Table 3 – Calculated Sound Levels of On-site Sources (dBA) ......................................... 31
Table 4 – Trip Generation Estimates ................................................................................. 49
Appendices
Appendix A: Legal Description
SEPA Environmental Checklist – Elementary School #16
Page 1 Renton School District No. 403
WAC 197-11-960 Environmental checklist.
ENVIRONMENTAL CHECKLIST
Purpose of checklist:
The State Environmental Policy Act (SEPA), chapter 43.21C RCW, requires all governmental agencies to
consider the environmental impacts of a proposal before making decisions. An environmental impact statement (EIS)
must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The
purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and
to reduce or avoid impacts from the proposal, if it can be done) and to help the agency decide whether an EIS is required.
Instructions for applicants:
This environmental checklist asks you to describe some basic information about your proposal. Governmental
agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring
preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description
you can.
You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you
should be able to answer the questions from your own observations or project plans without the need to hire experts. If
you really do not know the answer, or if a question does not apply to your proposal, write "do not know" or "does not
apply." Complete answers to the questions now may avoid unnecessary delays later.
Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations.
Answer these questions if you can. If you have problems, the governmental agencies can assist you.
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.
Use of checklist for nonproject proposals:
Complete this checklist for nonproject proposals, even though questions may be answered "does not apply." IN
ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D).
For nonproject actions, the references in the checklist to the words "project," "applicant," and "property or site"
should be read as "proposal," "proposer," and "affected geographic area," respectively.
ENVIRONMENTAL CHECKLIST
A. BACKGROUND
1. Name of proposed project, if applicable: Elementary School #16
2. Name of applicant: Renton School District No. 403
3. Address and phone number of applicant and contact person:
Applicant: Renton School District No. 403
Contact Person: Traci Brewer-Rogstad, Project Manager, Capital Planning & Construction
7812 S 124th Street, Seattle, Washington 98178
Phone: 425.204-4403
Email: traci.brewerrogstad@rentonschools.us
SEPA Environmental Checklist – Elementary School #16
Page 2 Renton School District No. 403
Architect: Hutteball + Oremus Architecture
Contact Person Katie Pond, Principal
4010 Lake Washington Blvd. NE #320, Kirkland, Washington 98033
Phone: 425.828.8948
Email: kpond@hoarch.com
Environmental/Permitting
Consultant: Brent Planning Solutions, LLC
Contact Person: Laura S. Brent, AICP
P.O. Box 1586, Mukilteo, Washington 98275
Phone: 425.971.6409
Email: LBrent@brentplanningsolutions.com
4. Date checklist prepared: Checklist was prepared in February of 2021
5. Agency requesting checklist: The City of Renton (City) is the agency with land use permit authority. The
Renton School District (District) is acting as the lead agency for environmental review and SEPA compliance
for this project. This SEPA review is being conducted consistent with the Renton School District Policy
6890, State Environmental Policy Act. This Checklist has been prepared by Brent Planning Solutions, LLC
(BPS) and project consultants, and has been reviewed and authorized by the District.
6. Proposed timing or schedule (including phasing, if applicable): The proposed Elementary School #16
project would begin upon approval and issuance of permits from the City. The anticipated timing includes
beginning construction in the spring of 2022 with school opening fall of 2023.
7. Do you have any plans for future additions, expansion, or further activity related to or connected with
this proposal? If yes, explain.
There are no plans for future additions or expansion at this time.
8. List any environmental information you know about that has been prepared, or will be prepared,
directly related to this proposal.
The following reports and information for this proposal are incorporated by reference and have been
submitted to the City of Renton under the submittal for the Conditional Use Permit (CUP). The reports are
also available for review at the District.
Pre-Application Letter/Meeting #PRE20-000219 .................. City of Renton Planning Division Chelan Ave. NE
Development Feasibility Study (February 2020) ....................................................... Greene Gasaway Architects
Cultural Resources Assessment (March 19, 2021, Revised) .................................................. Tierra Right of Way
Critical Area Report (March 31, 2021)........................................................................... The Watershed Company
Transportation Analysis Report (January 14, 2021) ................................................... Heffron Transportation, Inc
Drainage Technical Information Report (January 8, 2021) ......................................................... LPD Engineering
Geotechnical Engineering Report (December 22, 2020) ....................................... Associated Earth Sciences, Inc.
Noise Assessment (November 22, 2020)......................................................................... Ramboll US Corporation
Project Permit Plans (March 2021)........................... HOA Architects/LPD Engineering/Weisman Design Group
Information in this Checklist is based on the referenced material as well as information on the project from
the applicant, consultants and researched items. Direct excerpts from the reports have been included to
provide the reader more detailed information.
SEPA Environmental Checklist – Elementary School #16
Page 3 Renton School District No. 403
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.
Other approvals directly related to the proposal are listed in Item #10, and would be processed as part of the
building permit process. There are no other known applications pending.
10. List any government approvals or permits that will be needed for your proposal, if known.
The following permits/approvals have been identified as possible permits for this proposal:
SEPA Determination/Compliance ................................................................. Renton School District No. 403
Conditional Use Permit (CUP) Approval ................................................................................. City of Renton
Site Plan Review ....................................................................................................................... City of Renton
Lot Consolidation ..................................................................................................................... City of Renton
Street Vacation .......................................................................................................................... City of Renton
Commercial Building Permit/Mechanical/Electrical/Plumbing ............................................... City of Renton
Potential Haul Route Agreement, Public Works ...................................................................... City of Renton
Land Disturbing Activity (LDA) Permits/Grading ................................................................... City of Renton
Right-of-Way Use Permits ....................................................................................................... City of Renton
Stormwater Review/Approval .................................................................................................. City of Renton
Fire Permit ................................................................................................................................ City of Renton
Wetland Mitigation Bank .......................................................................................... City of Renton/WSDOT
US Army Corps of Engineers Permit .................................................................................................. USCOE
Section 401 Water Quality Certification ............................................................. WA Department of Ecology
Air Quality Permit ......................................................................... Puget Sound Clean Air Agency (PSCAA)
National Pollutant Discharge Elimination System (NPDES) ................. Washington Department of Ecology
Electrical Permit Review ........................................................ Washington State Dept. of Labor & Industries
School Plan Review ............................................................................................. King County Health District
Utility Extensions ................................................................................................................ Various Providers
Other permits may be identified during the review and permitting process. Information in this Checklist is
based on the referenced material as well as information on the project from the applicant, consultants and
research items.
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.
The proposed Elementary School #16 is part of the 2019 Construction Bond, which raised nearly $250
million. Population growth in the Renton Highlands area has led the District to need additional classroom
capacity for elementary school students. As stated on the District’s website, “Projects for the 2019 Bond
were chosen through a study that included input from principals, school staff, District Capital Planning and
Facilities staff, and an architectural and engineering review of all sites. The District convened a committee
of parents, community members, architects, and others to collect input on the proposed projects. The project
list was then presented to school board members for consideration and approval.”
The District is proposing to construct a new elementary school at the Subject Site. The new elementary school
is designed for a capacity of 650 students with classrooms, a library, a cafeteria, a warming kitchen, a
gymnasium, and administrative spaces with accommodation for mechanical, electrical and building services.
The programmed building area is approximately 77,000 square feet over two stories, with a mechanical
SEPA Environmental Checklist – Elementary School #16
Page 4 Renton School District No. 403
platform above. The building height is approximately 42.6’. In addition to the building, there would be an
outdoor classroom area, multipurpose playfield, hard/soft play areas and a covered play area.
A vehicle access point would be developed at the southeast corner of the property along Duvall Ave NE.
Parent queuing and drop-off would be located at the south end of the site in a parking lot accessed from
Duvall Ave NE. To reduce impacts to the principal arterial, the proposed vehicular access would be right-
turn in, right-turn out only. An additional exit-only drive would be developed at the southwest corner of the
property onto Chelan Ave.
The school bus drop-off would be located on the east side of the site accessed from Duvall Ave. To reduce
impacts to the principal arterial, the proposed bus access would be right-turn in, right-turn out only. The
proposed design also includes new playfields, a covered play area, and pedestrian plazas and pathways across
the site.
Other key elements of the environment include: an estimated earthwork quantity for the project as: Cut =
32,575 cubic yards; and Fill = 9,700 cubic yards. Two wetlands exist on the site with a proposal to fill
Wetland B and use the City of Renton/WSDOT wetland bank for mitigation. Specific details on these and
other aspects of the proposal are provided throughout this Checklist.
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 District’s proposed Elementary School #16 is comprised of 11 parcels and is located within the city
limits of Renton, in King County, Washington. The subject site contains the following King County Tax
Parcels: 102305-9076, 102305-9096,
102305-9107, 102305-9124, 102305-
9138, 102305-9139, 102305-9173,
102305-9202, 102305-9249, 102305-
9275, and 102305-9332, which total
11.08± acres in size. Physical addresses
associated with the parcels include:
1028, 1058, 1070, 1102, 1103, 1123, 1137,
1138, and 1146 Chelan Ave NE, and 1012
Duvall Ave NE (Renton, Washington).
Single family houses had been developed
on some of the parcels in the past
(demolished under permits in 2020).
Source: City of Renton – Online Mapping, 2021
Figure 1 – Vicinity Map
The school site is located within the northwest quarter of Section 10, Township 23 North, Range 5 East.,
Wm.M. (see Figure 1 – Vicinity Map, Figure 2 – Site Parcel Map and Figure 3 – Site Aerial Map).
SEPA Environmental Checklist – Elementary School #16
Page 5 Renton School District No. 403
All project drawings/plans, which have been reduced and inserted into the Checklist, have been submitted to
the City and are available as full-size drawings that may be reviewed at the District’s office.
Figure 2 – Site Parcel Map
N
SEPA Environmental Checklist – Elementary School #16
Page 6 Renton School District No. 403
Figure 3 – Site Aerial Map
SEPA Environmental Checklist – Elementary School #16
Page 7 Renton School District No. 403
Figure 4 – CUP Site Plan
SEPA Environmental Checklist – Elementary School #16
Page 8 Renton School District No. 403
Figure 5 – Landscape Site Plan
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 9 Renton School District No. 403
B. ENVIRONMENTAL ELEMENTS
1. EARTH
a. General description of the site (circle one): Flat , rolling, hilly, steep slopes,
mountainous, other.
Topographically, the site generally slopes down from the east to the west with
elevations ranging from approximately 438 feet in the southeastern portion of the
parcel to approximately 409 feet at the existing west wetland area.
b. What is the steepest slope on the site (approximate percent slope)?
The steepest existing slope on the property is approximately 40%. After project
grading the steepest finished slope would be 1:3 or 33%.
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 prime farmland.
A geotechnical study was conducted for the site. The soil review included a regional
geologic map (J.C. Yount, J.P. Minard, and G.R. Dembroff, 1993, Geologic Map of
Surficial Deposits in the Seattle 30’ by 60’ Quadrangle, Washington: U.S. Geological
Survey, Open-File Report 93-233, scale 1:100,000). The referenced map indicates
that the site is expected to be underlain at shallow depths by Vashon lodgement till.
The on-site explorations and interpretations are consistent with the conditions depicted
on the referenced published map.
The field study included performing a total of 20 exploration borings across the site.
The explorations typically encountered native materials consisting of medium dense
grading to very dense lodgement till sediments. Ten exploration borings encountered
surficial existing fill to depths of up to approximately 7 feet below the existing ground
surface. Two explorations (EB-10 and EB-11) encountered thin layers of fine sand
interpreted as Vashon recessional outwash. The northernmost exploration borings
(EB-13 and EB-14) terminated at depths of approximately 20.5 to 21.5 feet in stratified
sediments that appear to represent lodgement till to advance outwash transition
sediments.
d. Are there surface indications or history of unstable soils in the immediate
vicinity? If so, describe.
Based on the site survey, the site contains slopes that meet the RMC definition for
Sensitive Slopes. The Sensitive Slopes are located along the west side of the site
adjacent to mapped wetlands and are interpreted to be slopes that were created during
previous earthwork. RMC does not require a buffer or structure setback for Sensitive
Slopes (RMC 4-3-050G). Site grading that is completed in a manner consistent with
the recommendations in the geotechnical report would not result in increased risk of
slope instability on- or off-site. If construction site Temporary Erosion and
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 10 Renton School District No. 403
Sedimentation Controls (TESCs) are implemented during construction in accordance
with local standards of practice, the project as currently proposed would not result in
increased risks to the existing wetlands as a result of slope instability or erosion. There
are no records of unstable soils in the immediate area.
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.
There would be excavation and grading within the project area. It is estimated that the
earthwork quantities for the project would be as provided as follows: Cut = 32,575
cubic yards; Fill 9,700 cubic yards. Structural fill would consist of imported, clean, well-
graded sand or sand and gravel. (For additional details refer to Figure 6 – Grading and
Figure 7 - Drainage Control Plan.)
f. Could erosion occur as a result of clearing, construction, or use? If so, generally
describe.
Surface erosion may occur as a result of clearing and grading operations. Localized
erosion may occur as a result of construction activities; however, it would not extend
outside the project limits. The contractor would be responsible for construction slope
configurations and maintaining safe working conditions, including temporary excavation
stability. All applicable local, state, and federal safety codes would be followed. All open
cuts should be monitored during and after excavation for evidence of instability. If
instability is detected, the contractor would flatten the side slopes or install temporary
shoring.
During construction, surface water should be collected as close as possible to the source
to minimize silt entrainment that could require treatment or detention prior to discharge.
Timely implementation of permanent drainage control measures should also be a part of
the project plans, and would help reduce erosion and generation of silty surface water on-
site.
Compliance with the project’s Stormwater Pollution Prevention Plan (SWPPP) would
be required and would include stabilizing soils within disturbed areas, and protecting
exposed slopes. Use of on-site erosion control measures including silt fences, compost
filter socks, construction entrances, catch basin protection, interceptor swales,
sedimentation pond, and other standard construction erosion control practices, and
seasonal limitations of construction would control the potential for on-site erosion.
SEPA Environmental Checklist – Elementary School #16
Page 11 Renton School District No. 403
Figure 6 – Grading Plan
SEPA Environmental Checklist – Elementary School #16
Page 12 Renton School District No. 403
Figure 7 – Drainage Control Plan
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 13 Renton School District No. 403
g. About what percent of the site will be covered with impervious surfaces after
project construction (for example, asphalt or buildings)?
The following impervious surfaces after project completion would include:
• NOT including the dedication to the City:
On-site: 199,437 SF or 4.6 acres
ROW: 3,595 SF or 0.08 acres
• WITH the dedication to the City (located at back of sidewalk)
On-site: 192,312 SF or 4.4 acres
ROW: 10,720 SF or 0.25 acres
This would total 199,437 square feet or 41% of the site with impervious surfaces.
h. Proposed measures to reduce or control erosion, or other impacts to the earth, if
any:
To the extent possible, the disturbed area of the project site would be limited to
minimize erosion potential and best management practices (BMPs) would be utilized
during project implementation. All TESCs measures would conform to the
Washington State Department of Ecology (Ecology) BMPs and/or other applicable
regulatory bodies and be consistent with the City regulations. To reduce erosion, some
or all of the following vegetative cover practices may be implemented as site
conditions dictate: seeding, mulching and matting, and/or clear plastic covering.
Structural practices to control erosion include a stabilized construction entrance, filter
fabric fence, and/or compost filter socks for perimeter siltation control, pipe slope
drains and/or check dams. Recommendations in the Geotechnical Engineering Report
provides guidelines for site development and information for the contractor.
A preliminary SWPPP was prepared for the proposal. The preliminary SWPPP is
designed to meet the requirements of the City.
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.
Emissions to the air would result from the grading and construction activities
(including demolition activity) and equipment. Proper abatement of the building
would be done prior to demolition and precautions would be made to prevent the
release of any hazardous dust from site work. There would be a minor increase of
vehicles to the site during the construction. These vehicles would be related to the on-
site construction related activity and personal vehicles of construction workers.
Construction would result in temporary, localized increases in pollutant emissions
from construction activities and equipment. Dust from excavation and grading could
contribute to ambient concentrations of suspended particulate matter. Emissions
related to the project construction would be short-term and should not generate any
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 14 Renton School District No. 403
significant air quality impacts. Once the project is completed, the primary emissions
sources would be from traffic of area residents and on the adjacent road system. The
type and levels of those emissions would be minimal and would produce greenhouse
gas (GHG) emissions consistent with the existing uses and conditions in the vicinity.
b. Are there any off-site sources of emissions or odor that may affect your proposal?
If so, generally describe.
Off-site sources of emissions or odor are mainly related to vehicular traffic on the
adjacent roadways and are not anticipated to affect the proposal.
c. Proposed measures to reduce or control emissions or other impacts to air, if any:
Construction contractor(s) would have to comply with the Northwest Clean Air
Agency’s (NWCAAs) regulations. The project would fully comply with NWCAA’s
regulations. The use of watering trucks would be employed during project
construction to keep dust to a minimum. Exposed areas would be vegetated as quickly
as possible or covered with mulch and/or plastic covering. Construction equipment
would be kept in good operating condition to minimize exhaust. Contractor(s) would
be required to take all reasonable precautions to avoid or minimize fugitive dust
emissions during project construction. With the required control measures in place,
the potential from on-site construction air quality impacts is minimal.
3. WATER
a. Surface:
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.
Two wetlands were identified on-site. There was an additional off-site wetland,
identified on the City of Renton GIS maps; however, it was determined to not meet
the definition of a wetland.
Wetland B is a shallow forested and scrub-shrub depressional wetland. The
wetland is dominated by invasive species including Himalayan blackberry, reed
canarygrass, and field bindweed. Hydrology is presumed to be provided by a
seasonally high groundwater table and precipitation. No stormwater pipes or
drainage ditches were observed to be contributing to the wetland. The wetland
drains to the north, into a culvert observed at the southeast corner of parcel
1023059173. Slough sedge was observed in an area northeast of the wetland.
Wetland vegetation, soil, and hydrology indicators were not met in this area, and it
was not included in the wetland delineation.
Wetland C is a forested depressional wetland. Prevalent plant species include
Oregon ash, black cottonwood, English ivy, slough sedge, and hardhack.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 15 Renton School District No. 403
Hydrology is provided by precipitation, hillslope runoff, and presumed overflow
from a stormwater pond south of the wetland. A swale along the western boundary
of parcel 102305-9133 appears to convey this flow into the wetland unit. An algal
mat was present throughout much of the wetland area on parcel 102305-9076.
Culverts are present on parcels 102305-9138 and 102305-9275, which connect
three lobes of the unit. The wetland is relatively flat and it is presumed that water
is able to flow bi-directionally through these culverts. The wetland appears to drain
to the north via a culvert observed at the northern boundary of parcel 102305-9275.
The outlet was dry at the time of the July and September site visits, but historic
aerial photographs show the presence of an inundated swale connected to this
outlet.
One marginal area was identified in a reconnaissance effort conducted by The
Watershed Company in August 2018. This area was originally labeled “Wetland
A. This area was determined to not meet wetland indicators.
There are no jurisdictional streams on the property. [See Figure 8 – Wetland
Delineation Sketch (3 pages) for additional details.]
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 16 Renton School District No. 403
Figure 8 – Wetland Delineation Sketch
SEPA Environmental Checklist - Elementary School #16
Page 17 Renton School District No. 403
Figure 8 – Wetland Delineation Sketch (2 of 3)
SEPA Environmental Checklist - Elementary School #16
Page 18 Renton School District No. 403
Figure 8 – Wetland Delineation Sketch (3 of 3)
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 19 Renton School District No. 403
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.
Due to the extent and location of Wetlands B and C in the project area and the large
area necessary for an elementary school, access, and playfields, 12,181 SF of
permanent impacts to Wetland B and 3,344 SF of temporary impacts to the Wetland
C buffer are unavoidable. The 12,181 SF of permanent impacts to Wetland B
would be mitigated with credits purchased from the Springbrook Creek Wetland
and Habitat Mitigation Bank Instrument at a ratio of 0.70:1 for Category IV
wetlands. A JARPA application has been submitted to Ecology in order to obtain
a Section 401 Water Quality Certification (WQC) and Coastal Zone Management
Consistency Determination. Ecology permits are either issued concurrently with
the Corps permit or within 90 days following the Corps permit.
Wetland C would be considered low habitat function under the new Ecology
guidance and prescribed a buffer of 75 feet; however, the design includes a 100-
foot buffer that is in excess of Ecology guidance. Wetland buffers in the City of
Renton require an additional 15-foot critical area setback. The following uses are
allowed within the setback pursuant to RMC 4-3-050G.2: landscaping, uncovered
decks less than eighteen inches above grade, building overhangs that do not extend
more than twenty-four inches into the setback area, and impervious ground surfaces
(i.e., driveways and patios) provided that such improvements may be subject to
water quality regulations and maximum impervious surface limitations. The multi-
use playfield extends into the building setback area outside of the Wetland C buffer;
however, water quality would not be significantly impacted by the playfield and it
would not exceed impervious surface limitations.
Temporary and permanent buffer and wetland impacts would be mitigated in
accordance with the third and sixth steps outlined in RMC 4-3-050L.1.b:
“Rectifying adverse impacts to wetlands, …, and habitat conservation areas by
repairing, rehabilitating, or restoring the affected environment to the historical
conditions or the conditions existing at the time of the initiation of the project” and
“Compensating for adverse impacts to wetlands, …, and habitat conservation areas
by replacing, enhancing, or providing substitute resources or environments.”
Restoration of the 3,344 SF of temporary impacts to the Wetland C buffer, currently
vegetated with invasive or non-native vegetation, with native vegetation would
achieve equivalent or better habitat functions. Compensation for the 12,181 SF of
permanent impacts to Wetland B is provided via credit withdrawal from a
Mitigation Bank.
A mitigation plan would be provided to address the restoration. The mitigation
plan includes the restoration of areas temporarily impacted and compensation for
areas permanently impacted by the proposed project. The proposed mitigation plan
is based on City code and Ecology guidance. A key goal of the mitigation plan is
to meet or exceed the functions of the existing impacted critical areas. The
mitigation and restoration plan have been prepared by The Watershed Company
and are included in the Critical Area Report, referenced in this checklist.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 20 Renton School District No. 403
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.
Approximately 12,181 SF of permanent impacts to Wetland B and 3,344 SF of
temporary impacts to the Wetland C buffer are unavoidable. The 12,181 SF of
permanent impacts to Wetland B would be mitigated with credits purchased from
the Springbrook Creek Wetland and Habitat Mitigation Bank Instrument at a ratio
of 0.70:1 for Category IV wetlands. Temporary impacts would be mitigated
through a mitigation/restoration plan.
4) Will the proposal require surface water withdrawals or diversions? Give
general description, purpose, and approximate quantities if known.
The proposed project would not involve surface water withdrawals or diversions.
See discussion under 3.c. Water Runoff for additional information.
5) Does the proposal lie within a 100-year floodplain? If so, note location on the
site plan.
This property does not lie within a 100-year floodplain.
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.
There would be no discharge of waste materials to surface waters. Domestic water
would be provided to the site by the City. A Construction Storm Water Pollution
Prevention Plan (SWPPP) is appended to the Storm Water Technical Information
Report. It would be enforced as a requirement of the construction contract and
City/state regulations.
b. Ground:
1) Will ground water be withdrawn from a well for drinking water, or other
purposes? If so, give general description of the well, proposed uses and
approximate quantities withdrawn from the well. Will water be discharged to
ground water? Give general description, purpose, and approximate quantities
if known.
Construction-related groundwater impacts are not anticipated. Public water is
provided to the site by the City.
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.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 21 Renton School District No. 403
Waste material would not be discharged into the ground from the proposal. Sewers
currently serve the area and would be available to the site.
c. Water Runoff (including storm water):
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.
The source of runoff is from stormwater runoff. The site is located within three
drainage basins and has three separate discharge points from the site. The south
portion of the site flows southwest. The runoff is collected by the existing catch basins
along the east side of Chelan Ave NE and flows into a 12-inch main. The northeast
portion of the site discharges into the existing east wetland and leaves the site via a
12-inch storm line heading north and connects in to the 12-inch main within NE 12th
Street. The west portion of the site naturally sheet flows to the existing western
wetland and discharges from the site via a 15-inch CMP and heads north and
eventually connects into the15-inch main within NE 12th Street. Stormwater
ultimately discharges to May Creek, which outlets to Lake Washington.
For the South Basin, stormwater runoff would be collected in a series of catch basins
and routed via pipe conveyance systems to a shallow flow control detention facility.
This is currently designed as an ADS StormTech Chamber system, located on the
south portion of the site beneath the proposed parking lot. The detention system would
have a flow control structure to attenuate flows and would be followed by a water
quality treatment facility, which is designed as a Modular Wetland vault. The detained
and treated discharge would eventually be conveyed to the existing 12-inch main
within Chelan Ave NE. The required storage volume of the detention system was
found to be 15,300 cubic feet, with a live storage depth of 2-ft. The designed
StormTech Facility would have a slightly larger storage volume to accommodate
any minor site changes prior to the building permit approval.
For the North Basin, stormwater runoff would be collected in a series of catch basins
and routed via pipe conveyance systems to an ADS StormTech Chamber system,
located underneath the playfield. Under-drain pipes within the playfield subsurface
would also discharge into the StormTech system. The detention system would have a
flow control structure to attenuate flows and would be followed by a water quality
treatment facility, which is designed as a Modular Wetland vault. The detained and
treated discharge would then discharge into an existing vegetated swale running along
the east side of the gravel drive perpendicular to NE 12th Street, before entering the
piped conveyance system in the right-of-way. The required storage volume of the
detention system was found to be 73,000 cubic feet, with a live storage depth of 4-
ft. The designed StormTech Facility would have a slightly larger storage volume
to accommodate any minor site changes through the permitting process.
In the Wetland Basin, the project proposes to utilize full dispersion for the majority
of the new plus replaced impervious surfaces in this basin which includes a portion
of the roof, fire lane, and pedestrian walkways. Runoff from the roof and paved
surfaces would be routed to gravel dispersion trenches and overflow into the
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 22 Renton School District No. 403
vegetated wetland buffer zone, eventually discharging into Wetland C. Proposed
surfaces that utilize full dispersion are not considered to be target surfaces and thus,
do not trigger flow control and water quality requirements.
2) Could waste materials enter ground or surface waters? If so, generally
describe.
Waste materials are not anticipated to enter ground or surface waters from
construction. BMPs and the requirements of an approved SWPPP would be
incorporated into construction to minimize the opportunity for waste materials
and/or construction materials entering groundwater. Typical erosion controls are
anticipated for use during construction, as well as any other applicable controls, as
required.
3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of
the site? If so, describe.
The proposal would not alter drainage patterns in the vicinity.
d. Proposed measures to reduce or control surface, ground, runoff water, and
drainage pattern impacts, if any:
The project avoids impacts to the higher-functioning, Category III, Wetland C, and
instead limits permanent impacts to the lower-functioning, Category IV, Wetland B.
The buffer area temporarily impacted by clearing and grading associated with the
installation of the multi-use playfield is vegetated with invasive or non-native
vegetation. Mitigation and restoration of Wetland C would be provided consistent
with city standards. The proposed filling of Wetland B would be mitigated through
the use of a wetland bank. In addition, a comprehensive five-year maintenance and
monitoring plan is included in the mitigation plan. This plan would ensure that
proposed enhancement plantings would be maintained, monitored, and successfully
established within the first five years following implementation.
Efforts were made to minimize impacts to site wetlands and buffers. Sensitive site
design included planning the school features around the wetland and buffer to the
extent feasible. Existing trees in and adjacent to the standard buffer are deliberately
preserved. Minimization of impacts would also be achieved by employing BMPs
during construction to control erosion and sedimentation and preventing spills by
staging equipment. The proposal has incorporated the following additional elements:
1. Black vinyl coated 6 feet tall chain link fencing is proposed to be installed along
south, west and east property line. As the fencing crosses wetland buffer the fabric
to be held 12” off the ground. In addition to that, where fencing crosses wetland,
there will be no posts with concrete footing.
2. An interpretive wetland sign/kiosk is proposed to be installed at the west end of
the outdoor learning courtyard looking towards wetland.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 23 Renton School District No. 403
The project proposes more than 5,000 square feet of pollution-generating impervious
surface and therefore this project would require water quality treatment. Per the City of
Renton WQ Applications Map, the project is in a Basic Water Quality Treatment area;
however, since schools are classified as commercial projects, Enhanced Basic Water
Quality would be provided. Water quality treatment is required for the playfield, bus
lane, and parking lot as they are considered to be pollution-generating surfaces. Also,
frontage improvements would require water quality treatment and coordination with
the City. All the other impervious surfaces such as the roof, walkways, and gated fire
apparatus are non-pollution generating. The proposed water quality facility would be
a Modular Wetland System, which does have General Use Level Designation (GULD)
approval by Ecology for enhanced treatment.
BMPs would be incorporated into the grading activity. A TESC plan would be put in
place and would incorporate erosion control measures. As a control measure,
vegetative cover practices may be implemented as site conditions dictate, which may
include: seeding, mulching and matting, and/or clear plastic covering; additional
control measures may include structural practices to control erosion include a
stabilized construction entrance, filter fabric fence and/or compost filter socks for
perimeter siltation control, pipe slope drains and/or check dams. To the extent possible
the disturbed area of the project site would be limited to minimize erosion potential.
A SWPPP has been prepared for the project. The SWPPP addresses erosion,
sedimentation and provides pollution controls during construction. Operation and
maintenance activities, and storage and disposal at the construction site would be
conducted to minimize the potential for contamination of stormwater runoff.
Enhanced water quality treatment is incorporated into the design.
4. PLANTS
a. Check the types of vegetation found on the site:
✓ Deciduous tree: Alder, maple, aspen, other: ______
✓ Evergreen tree: Fir, cedar, pine, other: _________
✓ Shrubs
✓ Grass
__ 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
There are existing deciduous trees and shrubs, areas are dominated by Douglas-fir,
bigleaf maple, Himalayan blackberry, English ivy, and lawn areas. Vegetation within
Wetland B and its buffers includes invasive species (including Himalayan blackberry,
reed canarygrass, and field bindweed). Wetland C is a forested depressional wetland.
Dominant plant species include Oregon ash, English ivy, and slough sedge.
b. What kind and amount of vegetation will be removed or altered?
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 24 Renton School District No. 403
A Tree Retention Plan and Worksheet would be provided to the City. The plan shows
those trees that would remain on-site. Based on that plan, the project proposes to
remove 34 landmark trees, 271 significant trees, and 37 non-significant trees. The
removal of these trees and other vegetation is necessary for the school construction.
(Refer to Figure 4 – CUP Site Plan for additional details.)
c. List threatened and endangered species known to be on or near the site:
According to the Washington State Department of Fisheries and Wildlife’s Priority
Habitats and Species on the Web database, there were no threatened or endangered
vegetation species identified on or known to exist on or adjacent to the project site.
d. Proposed landscaping, use of native plants, or other measures to preserve or
enhance vegetation on the site, if any:
The Landscape Plan for the site was designed to utilize native and drought tolerant
plant materials to reduce the need for long-term use of supplemental irrigation. The
landscape design avoids the use of any plants that require intensive hand pruning or
weeding. Portions of the development area not covered by structures or other paved
areas, would be landscaped with native, drought-resistant vegetative cover. Irrigation
would be provided to enhance plant establishment. The City requires the following
landscaping be provided, which has been incorporated into the site design:
1. A landscape strip 10 feet in width along all public street frontages (private side)
and would include trees, shrubs, and groundcover.
2. Planting in the right-of-way planter strip between the curb and sidewalk with trees
and groundcover has been shown on the plans.
3. Nonresidential development in a residential zone requires a 15-foot wide partially
sight-obscuring landscaped visual barrier or a 10-foot wide fully sight-obscuring
landscaped visual barrier along common property lines which is included.
4. Interior parking lot landscaping areas would be sized to dimensions of at least
eight feet (8') by twelve feet (12').
5. A 15-foot perimeter landscaping screen (located outside of any required fencing)
is required around storm drainage facilities and has been shown on the plans.
In addition to the landscaped areas, there would be seeded turf, synthetic turf and wood
chip surfaces.
e. List all noxious weeds and invasive species known to be on or near the site.
Although not catalogued, the project area may include common weeds including
dandelion, annual ryegrass (poa), blackberry etc. The District would conduct noxious
weed control after construction to maintain the overall site and wetland buffer areas.
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. Examples include:
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 25 Renton School District No. 403
birds: hawk, heron, eagle, songbirds , other: ______________
mammals: deer, bear, elk, beaver, other: _______________
fish: bass, salmon, trout, herring, shellfish, other: ___________
In 2020 the houses and other associated buildings on-site were demolished. Prior to
that the site was limited to species more tolerant of residential activities. The wetland
areas do provide some habitat for species more tolerant of an urban environment.
Animal species observed at Wetland C included songbird species, crow (Corvus sp.),
and Pacific Chorus frog (Pseudacris regilla). Animal species that are assumed to use
the project area based on the urban location and presence of forest and scrub-shrub
vegetation include urban-tolerant mammal species (raccoon, opossum, etc.), and
urban-tolerant bird species (robin, jays, and other songbirds).
b. List any threatened and endangered species known to be on or near the site.
According to the Washington State Department of Fisheries and Wildlife’s Priority
Habitats and Species On the Web database, there are no threatened or endangered
animal species identified on or known to exist adjacent to the project site.
c. Is the site part of a migration route? If so, explain.
The project site is located along the Pacific Flyway, which includes Alaska, Arizona,
California, Idaho, Nevada, Oregon, Utah, Washington, and those portions of Colorado,
Montana, New Mexico, and Wyoming west of the Continental Divide. This is one of
three major migratory routes in North America. The Pacific Flyway stretches 4,000
miles north-to-south and 1,000 miles east-to-west, from the Arctic to the west coast of
Mexico and the Rocky Mountains to the Pacific Ocean. Every year, migratory birds
travel some or all of this distance both in spring and in fall, following food sources,
heading to breeding grounds, or travelling to overwintering sites. There is no evidence
that the project area of the site is of any specific value to migrating birds.
d. Proposed measures to preserve or enhance wildlife, if any:
The landscaping provided meets or exceeds City code requirements and could provide
limited habitat for on-site species. The wetland areas with the associated buffer would
continue to provide habitat for wildlife more tolerate of the surrounding urban uses.
e. List any invasive animal species known to be on or near the site.
It is likely that within the area there are rodents, mice, feral cats, etc. present on
portions of the site; however, no specific species have been observed or documented
on the subject site.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 26 Renton School District No. 403
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.
Both electric and natural gas services provided by Puget Sound Energy would be used
to serve the energy needs at the site.
b. Would your project affect the potential use of solar energy by adjacent
properties? If so, generally describe.
With the location of the school building internal to the site and location of the adjacent
road systems, the project would not impact the use of solar energy from adjacent
properties. There are some existing trees to remain; however, these have not impacted
the use of solar energy by neighboring residents.
c. What kinds of energy conservation features are included in the plans of this
proposal? List of other proposed measures to reduce or control energy impacts,
if any:
The design would incorporate a selection of efficient LED lighting fixtures, spacing
and placement to match IES recommendation s for each given area and meet
Washington State Energy Code (WSEC) requirements. Occupancy sensors and
daylight responsive controls would be provided in all areas where required by Code.
Additional features include:
• Building served by Dedicated Outdoor Air System (DOAS) with heat recovery;
• High-efficiency Chiller;
• Reduced lighting power;
• Daylighting controls for building lighting;
• Building envelope, thermal insulation & fenestrations meeting or exceeding
energy code minimums; and
• Project will be PV (photovoltaic) array ready.
Energy conservation features built into the current mechanical design include:
• High efficiency, low heating water temperature, condensing boilers;
• High efficiency, variable capacity, screw chillers;
• Variable speed heating and chilled water pumping;
• DOAS in over 90% of the building areas;
• Energy recovery on all DOAS units;
• CO2 sensors in variable, high occupant density, areas;
• Reduced heating and cooling fan energy by using active chilled beams in
classrooms and offices; and
• High efficiency, condensing water heaters.
Energy conservation features built into the current electrical design include:
• Daylight responsive controls, which automatically adjust light fixture output in
accordance with WSEC;
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 27 Renton School District No. 403
• User-controlled manual dimming for lighting in learning spaces; and
• Controlled receptacles controlled on time clock in learning spaces, offices etc. in
accordance with WSEC.
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.
There are certain opportunities for hazards during construction. These are limited by
the requirements for the general contractor and subcontractors that would be doing the
work. All State and federal requirements for construction safety would be met. The
completed project would not generate any environmental hazards. The District does
facilitate a building/employee safety program and other functions to maintain a high
level of environmental safety on their sites.
1) Describe any known or possible contamination at the site from present or
past uses.
There are no known contaminants on the site. Limited soil testing did not reveal
and contamination on-site.
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.
There are no known hazardous conditions on or underground at the project site.
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.
Petroleum fuels normally required for construction equipment and maintenance
equipment would be used on-site. There are no hazardous materials or chemicals
that would be used as part of the building, parking lot or landscaping on-going
maintenance.
4) Describe special emergency services that might be required.
Emergency services would most likely be associated with response by the fire
department or police. The area is served by emergency providers.
5) Proposed measures to reduce or control environmental health hazards, if
any:
The site would be well-managed during construction with safety standards
implemented. At the project completion, the site would provide excellent access
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 28 Renton School District No. 403
to all structures, and fire and safety provisions would be incorporated into the
building operation and design. There would be adequate fire flow for the school
provided with a new water main looped from the existing system. Any potential
chemicals used on-site, for either school programming or building maintenance
would follow proper procedures for use and storage.
The project planning has considered indoor environmental air quality. The
mechanical systems would be comprised of ducted HVAC returns. CO2 sensors
would be used throughout to minimize the amount of heating and cooling of
ventilation and still provide a healthy indoor air quality environment.
b. Noise
1) What types of noise exist in the area which may affect your project (for
example: traffic, equipment, operation, aircraft, other?
Existing noise generators are mainly those associated with vehicles on the
adjacent road systems, and adjacent residential and commercial uses. A noise
study was conducted on the site and for the proposed use. Measurements were
taken near the northwestern (SLM1), eastern (SLM2), and southeastern
boundaries (SLM3) using Larson Davis Type I sound level meters (Model LxT)
(see Figure 9 – Sound Level Measurement (SLM) and Receptor Locations,
source: Noise Assessment, Ramboll US Corporation, Nov. 22, 2020). The
following sound levels were measured:
Table 1 – Measured Existing Sound Levels (dBA)
Location Time of Day
(a)
Range of Sound Levels (dBA) (b)
Leq Lmax L2.5 L8.3 L25 L90
SLM1
Day 50 - 60 62 - 80 54 - 60 51 - 57 50 - 55 45 - 50
Night 48 - 55 54 - 68 45 - 53 42 - 50 40 - 48 38 - 44
School Day 53 - 60 62 - 80 54 - 59 53 - 56 51 - 54 45 - 50
SLM2
Day 60 - 67 76 - 96 68 - 71 65 - 70 61 - 68 45 - 56
Night 50 - 63 70 - 81 60 - 69 50 - 67 39 - 65 33 - 48
School Day 64 - 67 76 - 95 70 - 71 68 - 69 65 - 67 49 - 54
SLM3
Day 47 - 62 61 - 100 52 - 69 50 - 62 48 - 56 39 - 47
Night 36 - 46 54 - 67 43 - 51 38 - 49 35 - 47 33 - 40
School Day 47 - 56 61 - 80 52 - 62 50 - 60 48 - 52 40 - 45
(a) "Day" refers to the hours between 7 AM and 10 PM. "Night" refers to the hours between 10 PM and 7 AM.
“School Day” refers to the potential operating hours of the school, expected to fall between 8 AM and 4 PM.
(b) The Leq is the "energy-averaged" sound level. The Lmax is the-highest measured sound level. The L90 is the sound
level exceeded 90% of the time and is often considered representative of the background sound level. The L2.5,
L8.3, and L25 County noise limit levels that are defined previously in this report in the discussion of the regulatory
noise limits.
These measurements were taken from October 6 to 7, 2020.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 29 Renton School District No. 403
Figure 9 – Sound Level Measurement (SLM) and Receptor Locations
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 30 Renton School District No. 403
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.
A noise study was conducted for the proposal (Renton School District –
Elementary School No. 16 Noise Assessment, by Ramboll US Corporation, Nov.
22, 2020). The proposed school site and the surrounding properties are zoned
Residential (R8), Residential (R10) and Residential Multi-Family (RMF). The
use of the site for a school would classify the school as a Class B noise source
according to WAC 173-60-030. The adjacent residential properties are classified
as Class A receivers. The noise limits for a Class B noise source affecting a Class
A receiver are 57 dBA during daytime hours (7 AM to 10 PM) and 47 dBA at
night (10 PM to 7 AM). There are allowable short-term increases to the above
levels are as described in the report.
Noise generated from construction equipment would occur. These generators are
usually of short duration and restricted to hours per the City and Chapter 7 RMC.
The short-term increase and duration of noise levels would depend on the type of
construction equipment being used and the amount of time it is in steady use
(demolition and redevelopment). For example, purposes, at 200 feet from the area
of construction, the equivalent sound level (Leq, a measure of long-term average
noise exposure) for activities and equipment would be approximately as provided
in Table 2 – Typical Construction Noise.
Table 2 – Typical Construction Noise
Types of Equipment Range of Noise Levels (in decibels*)
Bulldozer 65-84
Dump Truck 70-82
Paver 74-76
Activity Range of Hourly Leq (in decibels*)
Grading 63-76
Finishing 62-77
* Decibels - The decibel (abbreviated dB) is the unit used to measure the
intensity of a sound.
Potential sources of noise associated with the proposal include buses and vehicles
traveling on on-site roadways, operation of an emergency generator during power
outages and monthly generator maintenance, and an air-cooled chiller.
As shown in the following table [Table 3 – Calculated Sound Levels of On-site
Sources (dBA)], expected activities on the site do not exceed the applicable
daytime or nighttime noise limits.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 31 Renton School District No. 403
Table 3 – Calculated Sound Levels of On-site Sources (dBA)
Receptor Chiller Only (a) Morning Arrival (b) Generator
Maintenance (c) Noise Limit(d)
R1 38 40 40 57 / 47
R2 40 46 43 57 / 47
R3 41 45 40 57 / 47
R4 44 48 47 57 / 47
R5 43 48 45 57 / 47
R6 39 46 41 57 / 47
R7 30 48 32 57 / 47
R8 27 48 29 57 / 47
R9 25 48 27 57 / 47
R10 25 48 24 57 / 47
R11 23 28 23 57 / 47
Notes:
(a) Early morning operation of the chiller (i.e., prior to 7 AM) would be subject to the stricter nighttime
noise limit.
(b) Morning arrival includes traffic traveling on-site between 8 and 9 AM and operation of the chiller.
(c) Generator maintenance includes operation of the generator and chiller during daytime hours.
(d) The noise limits are presented as daytime/nighttime limits. Daytime hours are between 7 AM and
10 PM. Nighttime hours are between 10 PM and 7 AM.
Source: Ramboll, 2020, Table 3 in that report
The report also considered the actual increase in noise levels from the proposal,
the highest calculated increase of 2 dBA could be expected at residences near the
south parking lot. No increases are expected near residences primarily affected
by traffic along Duvall Ave NE. Increases of 0 to 2 dBA would not typically be
discernable in an active, outdoor environment
3) Proposed measures to reduce or control noise impacts, if any:
Noise levels would vary due to the type and usage of the equipment. Construction
noises are only generated during those times and are usually of short duration for
each activity. The District is sensitive to the impact construction can have on
surrounding uses and has worked directly with neighborhoods on other school
construction projects. Construction noise impacts would be limited to hours of
construction as regulated by the City. Impacts would be limited to construction
and would be of short duration.
Model-calculated sound levels of on-site traffic and chiller operations during peak
morning arrival indicate compliance with the applicable noise limits during
daytime hours. Model-calculated sound levels of chiller operations
simultaneously with generator maintenance indicates this activity would comply
with the daytime noise limits at all receptor locations. Consideration of potential
increases in noise due to morning arrival traffic and chiller operation results in
estimated increases of 0 to 2 dBA at all residences near the site. Such increases
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 32 Renton School District No. 403
in an active, outdoor environment would be difficult to discern, and the project is
not expected to result in substantial noise impacts.
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.
The project site has been historically utilized for residential uses. The majority of the
houses were in poor and dilapidated condition and were demolished for safety and the
security of the site. Uses to the north are residential and a church, west and south are
residential uses and Duvall Ave NE is adjacent to the site on the east.
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 nonforest use?
The property has no known history of agricultural or managed forestry other than the
clearing that would have taken place upon granting of the original development permit
at the site.
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 are no working farms or active forest land uses in the vicinity.
c. Describe any structures on the site.
The subject site is now vacant land. Nine single-family structures were removed from
the subject site in anticipation of the construction of the new school. There were
single-family houses, accessory structures (i.e., garages, sheds, outbuildings), and a
mobile home on the site.
d. Will any structures be demolished? If so, what?
All the houses and associated buildings were demolished under a separate permit
issued by the City.
e. What is the current zoning designation of the site?
All the lots in the subject area are zoned either Residential 8 du/ac (R-8) or Residential
10 du/ac (R-10). An elementary school (K-12 Education Institution as defined by the
City) requires a Conditional Use Permit and is subject to a final decision by a Hearing
Examiner.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 33 Renton School District No. 403
The majority of the subject site is zoned as R-8. The northwestern-most parcel is
zoned as R-10 (see Figure 10 – Zoning Map for additional detail).
Figure 10 – Zoning Map
The site is bounded by residential properties to the west and south, and a church
(Renton Jehovah’s Witnesses) and a townhome development (Bridge Crest
Townhomes) to the north.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 34 Renton School District No. 403
f. What is the current comprehensive plan designation of the site?
The majority of the subject site is designated as Residential Medium Density. The
northwestern-most parcel is designated as Residential High Density (see Figure 11 –
Comprehensive Plan Map for additional detail).
Figure 11 – Comprehensive Plan Map
g. If applicable, what is the current shoreline master program designation of the
site?
Not applicable; there are no shoreline related overlays or designations on the property.
h. Has any part of the site been classified as a critical area by the city or county? If
so, specify.
There are wetlands and steep slopes on the site that have been discussed in this
checklist.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 35 Renton School District No. 403
i. Approximately how many people would reside or work in the completed project?
Approximately 650 students and 60 staff would occupy the school during the school
day.
j. Approximately how many people would the completed project displace?
No displacement would occur because the site is currently vacant.
k. Proposed measures to avoid or reduce displacement impacts, if any:
There would be no displacement impacts because the site is vacant; therefore,
avoidance/reduction measures are not applicable.
l. Proposed measures to ensure the proposal is compatible with existing and
projected land uses and plans, if any:
Compatibility of the proposal is measured by consistency with the existing school
uses, adopted comprehensive plan, zoning code, Capital Facilities Plans and
environmental review. The proposal has been designed to provide this consistency as
well as meet the long-range goals of the District.
The site is located within one of the ten geographically distinct community planning
areas, the Highlands Planning Area. These areas represent a process where the
community develops a vision and policies that address growth, quality of life, design,
and capital improvements as they affect the Community Planning Area. The proposed
school does address the growth in elementary age children within the District. The
school site has been carefully designed in character to blend with the surrounding
community and provides the needed capital improvements for the site development.
The City of Renton Comprehensive Plan, adopted 2015 (amended 12/10/2015), is the
guide for development within the City and various land use policies related to site
development and schools. The proposal is consistent with the following adopted
comprehensive plan polices (italicized wording is in response to the policies):
Land Use Element
Policy L-30: Maintain or increase the quantity and quality of wetlands. Development
activities shall not decrease the net acreage of existing wetlands.
Policy L-31: Protect buffers along wetlands and surface waters to facilitate
infiltration and maintain stable water temperatures, provide for biological diversity,
reduce amount and velocity of run-off, and provide for wildlife habitat.
Policy L-34: Ensure buildings, roads, and other built features are located on less
sensitive portions of a site when sensitive areas are present.
The site design has considered the sensitive portions of the site while planning for the
required elements of a school site. Wetland B Class IV is proposed to be filled and
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 36 Renton School District No. 403
mitigated by participating in the City’s wetland bank program. The filling of this low
functioning wetland would allow the site to be developed for the school. Wetland C
would be retained and buffers enhanced were required. A wetland
mitigation/restoration plan would be submitted to the City.
Transportation Element
Policy T-21: Support vacating streets when they meet the criteria in Renton
Municipal Code, Chapter 14, Vacations.
Policy T-41: Plan for land use densities and mixed-use development patterns that
encourage walking, biking, and transit use in designated areas.
Policy T-44: Ensure adequate transportation facilities are in place at the time of
development approval or that an adopted strategy is in place to provide adequate
facilities within six years.
Policy T-45: Ensure that new development contributes its fair share of the cost of
transportation facilities, programs and services needed to mitigate growth related
transportation impacts.
There are proposed street vacations included in the project. Vacating these portions
of public right of way would not impact the existing street system or adjacent
neighbors. The site design includes adequate provisions for staff/visitor parking, ten
bike parking spaces and bus parking. The required transportation mitigation fees,
frontage improvements and off-site improvements would be provided as required by
the City.
Housing and Human Services Element
Policy HHS-17: Build on collaborative relationships; partner with local agencies and
school districts to increase affordability and availability of early childhood
education, after-school youth engagement opportunities, and preparation for
college/career.
Policy HHS-23: Support the link between land development and physical activity by
increasing options for transit use, walking, and bicycling, such as providing physical
connections between residential areas and schools and/or commercial development.
The District continually works in collaboration with the community and City in
providing a wide range of education services. Provisions for site access to schools is
a key component in developing school site planning and connections to the community.
Utilities Element
Policy U-3: Promote co-location of new utility infrastructure within rights-of-way
and utility corridors, and coordinate construction and replacement of utility systems
with other public infrastructure projects to minimize construction related costs and
disruptions.
Policy U-5: Approval of development should be conditioned on the availability of
adequate utility service and should not result in decreases in local levels of service
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 37 Renton School District No. 403
for existing development. All new development should be required to pay their fair
share of construction costs for necessary utility system improvements.
Policy U-6: Encourage the use of water and energy conservation technologies to
provide utility services in an environmentally responsible manner.
Policy U-18: Emphasize the use of stormwater management techniques that
maximize water quality and infiltration where appropriate, which will not endanger
groundwater quality.
Policy U-29: Control runoff from new development, redevelopment, and
construction sites through the implementation of development design standards and
construction techniques that promote the use of best management practices to
maintain and improve storm water quality and manage stormwater flow.
Policy U-32: Work to protect surface and groundwater resources from pollutants
entering the storm drainage system.
The project has been sited in a location where the infrastructure can support the
development of the site. Utilities can be provided with proper and approved extension
of existing services. Consideration of stormwater management that provide for water
quality and the use of BMPs have been incorporated into the design.
Capital Facilities Element
Policy CF-5: Individually adopt by reference the most current Capital Facilities Plans
for the Kent School District #415, the Issaquah School District #411, and the Renton
School District #403, and adopt an implementing ordinance establishing a school
impact fees consistent with each District’s adopted Capital Facilities Plan, if the Plan
demonstrates that the facilities are needed to accommodate projected growth.
The 2020 Capital Facilities Plan for the Renton School District has been adopted by
the City and this project is consistent with that plan.
Renton Municipal Code 4-9-030 Conditional Use Permits:
D. Decision Criteria: Information provided for the decision-making criteria may be
duplicated from information previously provided in this checklist. This is provided in
order to provide justification for the approval of the CUP.
1. Consistency with Plans and Regulations: The proposed use shall be compatible
with the general goals, objectives, policies and standards of the Comprehensive Plan,
the zoning regulations and any other plans, programs, maps or ordinances of the City
of Renton.
The proposed school use is consistent and compatible with the comprehensive plan.
The policies listed above outline the consistency with policies in the plan. School uses
are allowed through the Conditional Use process and requirements for that approval
have been included. The project design meets the requirements of the zoning code for
setbacks, height, landscaping, drainage, wetland and transportation. The school use
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 38 Renton School District No. 403
is also consistent with, and discussed in, the District’s Capital Facilities Plan that is
adopted by the City.
2. Appropriate Location: The proposed location shall not result in the detrimental
overconcentration of a particular use within the City or within the immediate area of
the proposed use. The proposed location shall be suited for the proposed use.
There is a need for an elementary school within this vicinity of the school district
boundary. The site is well served by utilities and a transportation network that can
meet the needs of a school site. While Hazen High School is located across Duvall
Ave NE, the development of the site for an elementary school provides that resource
to the surrounding residential community.
3. Effect on Adjacent Properties: The proposed use at the proposed location shall
not result in substantial or undue adverse effects on adjacent property.
Consideration of adjacent uses was implemented in the design layout and visual
considerations. The placement of the school building internally and adjacent to
parking and bus drop-off has reduced impacts of the uses and structure. The
preservation of Wetland C would continue to provide an environmental asset to the
community and buffer from adjacent residential uses. Numerous existing trees would
be preserved, and landscaping and perimeter setbacks would meet code requirements.
There would be increased traffic on Chelan Ave NE, but this would be mainly limited
to AM arrivals and PM end of school.
4. Compatibility: The proposed use shall be compatible with the scale and character
of the neighborhood.
In order to reduce the overall 'bulk' of the building, the façade has been carefully
subdivided to assist the transition to the surrounding residential uses. The classroom
wings are broken into sections, providing articulation of the façade every 1-2
classrooms. These sections are further subdivided by use of materials and color to
again subdivide the mass into smaller sections. Along Duvall Ave NE the building
uses roof lines and materials to reduce the scale of the building.
The main visitor and staff parking lot is located to the south of the proposed school,
and is screened from surrounding streets by landscaping and buildings. Driveways
and curb cuts have been minimized.
The proposed design incorporates prominent architectural features and varying
rooflines to divide the building façade into smaller increments. Variations in
materials and material application have been utilized to create a visually attractive,
durable design. The project would incorporate site lighting at a level necessary to
ensure the safety and security of all visitors while not impacted adjacent residential
uses. The District has been in contact with the Renton Jehovah’s Witnesses Church
and the school development would not impact the church use or operation.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 39 Renton School District No. 403
5. Parking: Adequate parking is, or will be made, available.
The proposal includes on-site parking for a total of 82 automobiles (79 in the main
staff/visitor lot and 3 in the bus load/unload area). The school-bus load/unload area
has room for 8 full-size (typically 40 feet long) school buses and two special education
(SPED) buses (typically 25 feet long); although current planning indicates the school
would be served by eight or fewer buses. During evening and/or weekend events, the
school-bus load area could be used for automobile parking, which is estimated to
accommodate about 20 vehicles.
City of Renton Municipal Code section 4-4-080.F.10.d outlines the parking
requirements for a variety of land uses. For elementary schools, the City requires a
minimum of 1 parking space per employee. The proposed school is expected to have
60 employees when enrolled at its planned capacity of 650 students. Based on these
values, the City would require a minimum of 60 parking spaces. The proposed parking
supply would exceed City code requirements. As a result, the District is requesting a
modification to exceed the number of parking spaces on-site.
6. Traffic: The use shall ensure safe movement for vehicles and pedestrians and
shall mitigate potential effects on the surrounding area.
The school site design has provided for the safe movement of vehicles to the site and
for queuing on-site. Vehicular safety during construction was also considered during
the planning. Parking layouts are designed to allow for parent queuing during drop
off and pick up. Bus parking has been provided along the bus drop off located off of
Duvall Ave NE. The District would require the selected contractor to develop a
construction management plan (CMP) that addresses traffic and pedestrian control
during school construction. It should define truck routes, lane closures, walkway
closures, and on-street parking disruptions, as necessary. To the extent possible, the
CMP should direct trucks to arterials and away from residential streets to avoid
unnecessary conflicts with resident and pedestrian activity. The CMP should identify
parking locations for the construction staff; to the extent possible, construction
employee parking should be contained on-site.
Other transportation mitigation includes:
The City collects transportation impact fees and has outlined fee rates for a variety of
uses. The transportation impact fee for the elementary school project is calculated to
be $356,377.
The project would dedicate right-of-way along the street frontages of Duvall Ave NE
and Chelan Ave NE. The dedication along Duvall Ave NE would be about 887 linear
feet along the length of the property line and could vary between 7.5 and 12 feet in
width. The total area of the dedication could range from about 8,220 SF (if the
dedication varies between 7.5 and 12 feet) and about 10,646 SF (if a straight-line
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 40 Renton School District No. 403
dedication is required). The six-inch dedication along Chelan Ave NE would be about
272 linear feet long with a total area of about 136 SF.
Frontage improvements would be made along Duvall Ave NE and Chelan Ave NE.
The District would coordinate with the City to integrate the dedication areas and
frontage improvements with the City’s planned roadway improvement in that segment.
To mitigate school-related traffic impacts, the project would install a traffic signal
(replacing the existing HAWK beacon signal) at the NE 10th Street / Duvall Ave NE
intersection. Installation of the new traffic signal would include pedestrian actuated
signals and crosswalks on all four legs.
In addition to these measures the District would communicate with staff, students and
the community information on proper access to the school and parking for school and
event days.
7. Noise, Light and Glare: Potential noise, light and glare impacts from the
proposed use shall be evaluated and mitigated.
A noise study was conducted for the project. Model-calculated sound levels of on-site
traffic and chiller (equipment) operations during peak morning arrival indicate
compliance with the applicable noise limits during daytime hours. Model-calculated
sound levels of chiller operations simultaneously with generator maintenance
indicates this activity would comply with the daytime noise limits at all receptor
locations. Consideration of potential increases in noise due to morning arrival traffic
and chiller operation results in estimated increases of 0 to 2 dBA at all residences
near the site. Such increases in an active, outdoor environment would be difficult to
discern, and the project is not expected to result in substantial noise impacts.
A lighting plan is included with the CUP submittal. All exterior building lighting
would be directed downward and shielded to minimize glare on the nearest properties.
Every fixture on the exterior would be provided with a motion sensor.
8. Landscaping: Landscaping shall be provided in all areas not occupied by
buildings, paving, or critical areas. Additional landscaping may be required to buffer
adjacent properties from potentially adverse effects of the proposed use.
The Landscape Plan for the site was designed to utilize native and drought tolerant
plant materials to reduce the need for long-term use of supplemental irrigation. The
landscape design avoids the use of any plants that require intensive hand pruning or
weeding. Portions of the development area not covered by structures or other paved
areas, would be landscaped with native, drought-resistant vegetative cover. Irrigation
would be provided to enhance plant establishment. The City requires the following
landscaping be provided, which has been incorporated into the site design:
1. A landscape strip 10 feet in width along all public street frontages (private side)
and would include trees, shrubs, and groundcover.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 41 Renton School District No. 403
2. Planting in the right-of-way planter strip between the curb and sidewalk with
trees and groundcover has been shown on the plans.
3. Nonresidential development in a residential zone requires a 15-foot wide partially
sight-obscuring landscaped visual barrier or a 10-foot wide fully sight-obscuring
landscaped visual barrier along common property lines, which is included.
4. Interior parking lot landscaping areas would be sized to dimensions of at least
eight feet (8') by twelve feet (12').
5. A 15-foot perimeter landscaping screen (located outside of any required fencing)
is required around storm drainage facilities and has been shown on the plans.
In addition to the landscaped areas, there would be seeded turf, synthetic turf and
wood chip surfaces.
Elementary school capacity still remains the District’s greatest challenge. Relying
heavily on the use of relocatable classrooms (portables) to accommodate the
fluctuating student population, portables at elementary schools now account for over
15% of the District’s total K – 5 facility capacity. Portables are, however, not
considered permanent structures, and are therefore not included in the inventory of
permanent facilities. They are viewed as a short-term solution for managing
enrollment fluctuation; housing students on a temporary basis until permanent
facilities can be constructed.
With the 2020 Capital Facilities Plan Renton School District No. 403 - 3 - passage of
the 2019 RSD bond measure, the District is moving forward with this proposed new
school, which would allow permanent capacity to surpass enrollment for the first time
in nearly two decades. The District’s sixteenth elementary school is scheduled to open
in the fall of 2023.
Additionally, SEPA compliance is the responsibility of the District and would be
conducted consistent with SEPA Rules, WAC 197-11 and SEPA, RCW 43.21C and
the District’s SEPA Board Policy.
m. Proposed measures to reduce or control impacts to agricultural and forest lands
of long-term commercial significance, if any:
There are no nearby agricultural or forest lands of long-term commercial significance.
9. HOUSING
a. Approximately how many units would be provided, if any? Indicate whether
high, middle, or low-income housing.
Housing would not be included.
b. Approximately how many units, if any, would be eliminated? Indicate whether
high, middle, or low-income housing.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 42 Renton School District No. 403
No housing units are located on the subject site.
c. Proposed measures to reduce or control housing impacts, if any:
There are no housing impacts; therefore, mitigation measures are not applicable.
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 proposed height of the tallest part of the building is 42’6”.
The exterior building materials would be a combination of brick, metal wall panels,
metal roof panels, composite resin panels and a very small amount of concrete
masonry units (CMUs).
b. What views in the immediate vicinity would be altered or obstructed?
The view of the site would change from a vacant site to a fully developed school site.
The area of Wetland C would remain undisturbed and consistent with existing views.
No views are anticipated to be obstructed as a result of the proposal.
c. Proposed measures to reduce or control aesthetic impacts, if any:
The project did incorporate some of the requirements of the City’s Urban Design
Regulations (UDRs), although this proposal is not required to meet these. The school
is located with clear pedestrian connections to sidewalks on Duvall Ave NE and
Chelan Ave NE. The front entry of the building, highlighted by a prominent entry
canopy, is clearly visible from the main street frontage (Duvall Ave NE), and opens
onto a landscaped pedestrian plaza. The public areas of the building face Duvall Ave
NE, while the more private classroom wings stretch to the west with classrooms placed
to optimize their access to controlled natural lighting.
In order to reduce the overall ‘bulk’ of the building, the façade has been carefully
subdivided to assist the transition to the surrounding residential context. The
classroom wings are broken into sections, providing articulation of the façade every
one to two classrooms. These sections are further subdivided by use of materials and
color to again subdivide the mass into smaller sections. Along Duvall Ave NE the
building uses roof lines and materials to reduce the scale of the building. Due to the
limited access options for the facility, the building’s trash enclosure and utility
enclosure (which houses the facilities emergency generator, chiller, and transformer),
are served from Duvall Ave NE. While these enclosures face the main street, they are
set back from the property line approximately 90 feet, and are screened from view by
a stand of trees. These utility areas are enclosed on all sides by masonry walls. The
trash enclosure includes a roof to enhance visual appeal.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 43 Renton School District No. 403
The main visitor and staff parking lot is located to the south of the proposed school,
and is screened from surrounding streets by landscaping and buildings.
A monument sign/reader board would be provided adjacent to Duvall Ave NE and all
signs would meet City code requirements.
11. LIGHT AND GLARE
a. What type of light or glare will the proposal produce? What time of day would
it mainly occur?
Parking and building lighting would be necessary in the early morning and evening
hours. This would be consistent with similar elementary schools in the area.
b. Could light or glare from the finished project be a safety hazard or interfere with
views?
Lighting from the finished project should not interfere with any views due to the
placement of building and site features, design and direction of lighting fixtures;
therefore, no light or glare from the finished project would pose a safety hazard.
c. What existing off-site sources of light or glare may affect your proposal?
The main sources of off-site light and glare are from the adjacent roadways’ street
lighting, vehicles traveling along area roads, and the adjacent residential land uses.
d. Proposed measures to reduce or control light and glare impacts, if any:
All exterior building lighting would be directed downward and shielded to minimize
glare on the nearest properties. Every fixture on the exterior would be provided with
a motion sensor.
Site lighting fixtures would be compliant to IES “full cutoff” requirements to minimize
light trespass. Light fixtures would be selected to maximize energy efficiency based
on engineered optical systems and efficient LED sources. Site lighting fixture
placement would optimize lighting to desired areas, and minimize light trespass to
areas off-site. Occupancy sensors would be provided at pole mounted fixtures to
reduce light levels and promote energy efficiency during periods when the area is
unoccupied.
12. RECREATION
a. What designated and informal recreational opportunities are in the immediate
vicinity?
The proposed school project is within an area that contains a variety of recreational
opportunities. The area includes nearby Kiwanis Park, described as a spacious nine-
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 44 Renton School District No. 403
acre neighborhood park in the Highlands that offers a variety of recreational amenities.
There are a variety of public parks within a mile of the subject site. There are also
area schools, which contain a variety of recreational opportunities, available for
community use outside of school hours as managed by the District. This includes
nearby Hazen High School, which is located on the east side of Duvall Ave NE.
The proposal includes construction of a multi-purposed playfield, hard/soft play areas
and a covered play area. Upon completion of the proposal, the project would provide
an opportunity for recreational use by the community after school hours, as managed
by the District.
b. Would the proposed project displace any existing recreational uses? If so,
describe.
The subject site was developed with single-family housing. There is no displacement
of existing recreational uses with the redevelopment of the site.
c. Proposed measures to reduce or control impacts on recreation, including
recreation opportunities to be provided by the project or applicant, if any:
There would be no adverse impact to area recreational opportunities due to the project;
therefore, no mitigation measures are proposed.
13. HISTORIC AND CULTURAL PRESERVATION
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:
There are no structures remaining on the property. The subject site had been developed
with single-family housing. The District worked with the Department of Archaeology
and Historic Preservation (DAHP) for review of the structures prior to demolition.
The DAHP provided a letter on June 24, 2020 that determined no historic properties
would be affected by removing the structures on the subject site (Project Tracking
Code 2020-06-04215).
There are no on-site structures, objects or places listed on or proposed for a historic or
cultural register.
b. Are there any landmarks or 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 project site is located in a developed area of the City and not within any designated
historic district. Many area residences and associated outbuildings within the area are
of newer construction and not of historic interest by the State DAHP standard (45 years
or older).
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 45 Renton School District No. 403
The Cultural Resources Inventory for the Chelan Avenue NE Project, King County,
Washington was prepared by Tierra Right of Way, September 11, 2020 and revised
March 19, 2021. The report located one new archaeological site (remains of a 1962
garage and a 1969 mobile home). The report concluded:
The site has poor integrity and does not meet significance criteria. Tierra
recommends it Not Eligible for listing in the National Register of Historic
Places (NRHP). Eight standing structures over 50 years old were documented
as well, and all have been determined Not Eligible for listing on the NRHP by
the Washington Department of Archaeology and Historic Preservation
(DAHP).
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.
Research was conducted on the web using the Washington Information System for
Architectural and Archaeological Records Data (WISAARD) as well as direct
consultation with the DAHP. A Cultural Resources Report was prepared for the
proposal.
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.
There are no impacts that would require mitigation measures. Consultation was
conducted with DAHP early in this proposal.
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 proposed school site is bounded by Duvall Ave NE on the east with a portion of
site frontage along the east side of Chelan Ave NE. Some of the site parcels are
accessed from the south via Chelan Ave NE, which extends 300 feet north of NE 10th
Street. Most site parcels are accessed from the north via a private easement with a
gravel drive that extends south from NE 12th Street and is aligned with segments of
unimproved Chelan Ave NE right-of-way.
Duvall Avenue NE is a Principal Arterial extending from NE 4th Street to the north
City limits. Near the site, the roadway has four travel lanes (two in each direction) with
paved shoulders on both sides. The posted speed limit is 35 miles per hour (mph). Its
intersection with NE Sunset Blvd (State Route [SR] 900) is signalized. The minor side-
street intersecting legs of NE 10th and 12th Streets are stop-sign controlled.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 46 Renton School District No. 403
Union Avenue NE is a Minor Arterial extending from NE 4th Street to the north City
limits. Near the site, the roadway has four travel lanes (two in each direction). There
are curbs, gutters, and sidewalks on both sides and the posted speed limit is 30 miles
per hour (mph). Its intersection with NE Sunset Blvd is signalized.
Chelan Avenue NE is a north-south oriented dead-end local access street that extends
about 300 feet north of NE 10th Street. It currently provides access to eight single-
family homes and abuts a portion of the proposed project site. The roadway is about
30-feet wide (curb-to-curb) with curbs, gutters, and sidewalks on both sides adjacent
to the existing houses.
NE 10th Street is a two-lane east-west local access street that connects from just east
of Duvall Ave NE on the east to Union Ave NE on the west. The posted speed limit
is 25 mph. Its approaches to Duvall Ave NE and Union Ave NE are stop-sign
controlled. Its intersection with Vashon Ave NE is all-way-stop controlled.
NE 12th Street is a two-lane east-west local access street that connects from just east
of Duvall Ave NE on the east to Anacortes Ave NE on the west. Its approaches to
Duvall Ave NE are stop-sign controlled.
The project would provide access in two locations. The parking lot (for staff and
visitors) and family-vehicle drop-off/pick-up loop would be located at the southeast
portion of the site. The main access driveway is proposed on Duvall Ave NE near the
south end of the site and would be restricted to right-in/right-out-only. A secondary
exit-only driveway is proposed on Chelan Ave NE. As requested by City review staff,
a queuing lane for southbound right-turns entering the main access would be
constructed; it could be used as a shared-bicycle lane when not used by school
vehicles. The on-site school-bus load/unload area would be accessed from two one-
way driveways. Buses would approach from the north on Duvall Avenue NE and turn
right into the site at the northernmost driveway; buses would exit the site, turning right
onto Duvall Ave NE from the center driveway. Operations analyses of the proposed
access driveways indicate that all movements would operate at LOS C or better during
all three peak hours.
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?
King County Metro Transit provides bus service in the vicinity of the project site with
the closest stops, served by Route 240, located about 0.3-mile north of the site at the
NE Sunset Blvd / Duvall Ave NE intersection. There are also stops, served by Route
105, located about 0.4-mile to the west of the site at the NE 10th Street / Union Ave NE
intersection. The two are routes are described below:
Route 240 provides service seven-days per week between the Renton and Bellevue
Transit Centers with stops in the Wilburton, Eastgate, Newcastle, Renton Highlands,
and Renton Boeing areas. Weekday service is provided from about 5:00 A.M. to about
midnight with 30-minute headways (the time between consecutive buses).
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 47 Renton School District No. 403
Route 105 provides service seven-days per week between the Renton Transit Center
and Renton Highlands area with stops along Union Ave NE. Weekday service is
provided from about 4:30 A.M. to about midnight with 30-minute headways. School
bus transportation would be provided to non-walkers attending the elementary school.
c. How many additional parking spaces would the completed project or non-project
proposal have? How many would the project or proposal eliminate?
The proposal includes on-site parking for a total of 82 automobiles (79 in the main
staff/visitor lot and 3 in the bus load/unload area). The school-bus load/unload area
has room for 8 full-size (typically 40 feet long) school buses and two special education
(SPED) buses (typically 25 feet long); although current planning indicates the school
would be served by eight or fewer buses. During evening and/or weekend events, the
school-bus load area could be used for automobile parking, which is estimated to
accommodate about 20 vehicles.
City of Renton Municipal Code (RMC) section 4-4-080.F.10.d outlines the parking
requirements for a variety of land uses. For elementary schools, the City requires a
minimum of 1 parking space per employee. The proposed school is expected to have
60 employees when enrolled at its planned capacity of 650 students. Based on these
values, the City would require a minimum of 60 parking spaces. The proposed parking
supply would exceed City code requirements. As a result, the District is requesting a
modification to exceed the number of parking spaces on-site.
For evening events, the on-site parking supply of 82 spaces would be available. Room
for another 12 parked vehicles would exist in the family-vehicle load/unload zone and
20 vehicles in the school-bus load/unload area, bringing the on-site total to 114 spaces
for evening or weekend events.
For larger evening events, there are typically between 3.0 and 3.5 persons attending
for each parked vehicle. This rate accounts for higher levels of carpooling (families
and students in a single vehicle) as well as drop-off activity that does not generate
parked vehicles. The on-site parking supply could accommodate events with
attendance of between 340 and 400 persons without requiring use of nearby on -street
parking.
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 City has a fully funded project that would affect the project study area. Project
#20-15 – Duvall Avenue NE Roadway Improvements from NE 7th Street to Sunset Blvd
NE would reconstruct and resurface the roadway, including new pavement, curb,
gutter, sidewalk, street lights, storm drainage, channelization, and bike lanes.
Adjacent to the site, it would install a raised center median with left-turn pockets at
the NE 10th and 12th Street intersections. Project design is complete and was expected
to be ready for construction by late-2021.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 48 Renton School District No. 403
The City would require frontage improvements and right-of-way dedications along
Duvall Ave NE and Chelan Ave NE as part of project development. The improvements
would include:
Duvall Avenue NE – New curb and gutter, with an 8-foot-wide planter, 8-foot-wide
sidewalk, and a 5-foot-wide bicycle lane. A 10- to 11-foot-wide queueing lane (shared
with the bicycle lane) would be required between the school-bus exit driveway and the
main parking lot access driveway. These improvements are expected to require a
right-of-way dedication to the back of the sidewalk. The distance from the existing
right-of-way line to the back of new sidewalk along Duvall Ave NE varies from 7.5 -
feet to 12-feet, not including the transition back to the existing sidewalk at the south
end of the property. The District would coordinate with the City to integrate the
dedication areas and frontage improvements with the City’s planned roadway
improvement in that segment.
Chelan Avenue NE – Half-street improvements to current City standards are required.
These are expected to include curb, gutter, and 5-foot-wide sidewalk. These
improvements are expected to require a right-of-way dedication of six inches to the
back of the sidewalk.
No other changes to the roadway network are proposed.
e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail,
or air transportation? If so, generally describe.
While other means of transportation (such as water, rail and air) are available within
the region, the school project would not use other means of 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 nonpassenger
vehicles). What data or transportation models were used to make these
estimates?
The school is estimated to generate up to 1,500 trips per day, with 537 in the morning
arrival peak hour, 243 in the afternoon dismissal peak hour, and 105 in the PM peak
hour of the adjacent roadways. These estimates reflect all trips generated by the school
including student pick-up/drop-off, school-bus trips, family-vehicle and visitor trips,
teacher/staff trips, and typical after-hours use of playfields or other on-site facilities.
The District estimates the school would be served by eight full-size school buses.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 49 Renton School District No. 403
Table 4 – Trip Generation Estimates
Time Period Trip Rates (In / Out) a
Vehicle Trip Estimate
Inbound Outbound
Total Daily 19,52 trips / 1,000 sfgfa (50% in, 50% out) 750 750 1,500
Morning Peak Hour b 6.97 trips / 1,000 sfgfa (55% in, 45% out) 295 242 537
Afternoon Peak Hour c 3.16 trips / 1,000 sfgfa (44% in, 56% out) 107 136 243
Commute PM Peak Hour d 1.37 trips / 1,000 sfgfa (45% in, 55% out) 47 58 105 Source: Heffron Transportation, September 2020. sfgfa = square feet gross floor area.
a. Institute of Transportation Engineers, 2017. Elementary School (LU 520) rates applied to the proposed school size of
77,000 sfgfa.
b. Analysis will assume morning arrival peak hour overlaps AM peak hour of adjacent street.
c. Analysis will assume afternoon dismissal peak hour will overlap 3:00 to 4:00 P.M. hour.
d. From count at Duvall Ave NE / NE Sunset Blvd from Feb. 2018, PM peak hour of adjacent roadways occurs from 4:00 to
5:00 P.M.
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.
The proposal would not interfere with the movement of agricultural and forest
products on the road system.
h. Proposed measures to reduce or control transportation impacts, if any:
The following are transportation mitigation measures incorporated into the project:
The District would require the selected contractor to develop a construction
management plan (CMP) that addresses traffic and pedestrian control during school
construction. It should define truck routes, lane closures, walkway closures, and on-
street parking disruptions, as necessary. To the extent possible, the CMP should direct
trucks to arterials and away from residential streets to avoid unnecessary conflicts with
resident and pedestrian activity. The CMP should identify parking locations for the
construction staff; to the extent possible, construction employee parking should be
contained on-site.
The City collects transportation impact fees and has outlined fee rates for a variety of
uses. The transportation impact fee for the elementary school project is calculated to
be $356,377. This relates to a fee rate of about $4.63 per square foot based on the
proposed school size of 77,000 SF. For comparison and based on the planned capacity
of 650 students, this would equate to a fee of about $548 per student.
In order to comply with street frontage improvement requirements outlined by the
City, the project would dedicate right-of-way along the street frontages of Duvall Ave
NE and Chelan Ave NE. The dedication along Duvall Ave NE would be about 887
linear feet along the length of the property line and could vary between 7.5 and 12 feet
in width. The total area of the dedication could range from about 8,220 SF (if the
dedication varies between 7.5 and 12 feet) and about 10,646 SF (if a straight-line
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 50 Renton School District No. 403
dedication is required). The six-inch dedication along Chelan Ave NE would be about
272 linear feet long with a total area of about 136 SF.
Frontage improvements would be made along Duvall Ave NE and Chelan Ave NE.
The District would coordinate with the City to integrate the dedication areas and
frontage improvements with the City’s planned roadway improvement in that segment.
To mitigate school-related traffic impacts, the project would install a traffic signal
(replacing the existing HAWK beacon signal) at the NE 10th Street / Duvall Ave NE
intersection. Installation of the new traffic signal would include pedestrian actuated
signals and crosswalks on all four legs.
The District should coordinate with the City to confirm the locations, extent, and
signage of the school-zone signage and flashing beacons on Duvall Ave NE as well as
signage and equipment needs to establish school zones on NE 10th and NE 12th Streets.
In addition to these measures the District would communicate with staff, students and
the community information on proper access to the school and parking for school and
event days.
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 project site is currently served by the City of Renton Police and Fire Departments.
It is anticipated that the proposal would require a similar level of public services as
what is provided to existing area elementary schools.
b. Proposed measures to reduce or control direct impacts on public services, if any.
The District would be required to pay Fire impact fees. Approved fire sprinkler and
fire alarm systems would be provided throughout all the buildings. Fire alarm system
is required to be fully addressable and full detection is required as well as providing
access roads that within 150-feet of all points on the building. Required turning radius
are 25-feet inside and 45-feet outside. Roadways shall be a minimum of 20-feet wide.
All fire lanes would be fully paved.
All areas of the building shall comply with the City’s Emergency Radio Coverage
ordinance. Testing shall verify both incoming and outgoing minimum emergency
radio signal coverage. If inadequate, the building shall be enhanced with amplification
equipment in order to meet minimum coverage. Separate plans and permits are
required for any proposed amplification systems.
The District has its own safety policies/drills and staff receives continuing education
and instruction from the District.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 51 Renton School District No. 403
16. UTILITIES
a. Circle utilities currently available at the site: electricity , natural gas , water , refuse
service , telephone , sanitary sewer , septic system, other: internet
Based on the site’s survey, there is no existing sanitary sewer infrastructure in the site
area that can be utilized for the proposed school. There is a an existing 8-inch sewer
main within Chelan Ave NE. The public water system serving the site would be owned
and maintained by the City. There are existing lines on the eastern side of Duvall Ave
NE and Chelan Ave NE. Other utilities are in the vicinity and would be required to be
extended to the site as need for the new school buildings.
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 site resides within the City’s sewer service area. The proposed sanitary
sewer system would be routed along the west and south side of the school, flowing to
the south to connection the sewer main within Chelan Ave NE. Sanitary sewer design
and storm drainage systems would be verified with the City during upcoming
coordination meetings and would be reviewed and permitted by the City.
In order to provide adequate fire hydrant coverage for the proposed building, a new 10-
inch water loop around the site with four on-site fire hydrants is proposed. Two
additional fire hydrants are required within the right-of-way of Duvall Ave NE. The on-
site water loop would connect to the 10-inch public water main running along the eastern
side of Duvall Ave NE as well as the 8-inch public water main within Chelan Avenue
NE. The water loop would require a 15-foot easement. The water design would be
reviewed and permitted by the City through the Developer Extension Agreement.
For utilities that are available to the site, proper sizing/extension would be the
responsibility of the District. All existing and proposed utility lines (i.e., electrical,
phone, cable services, etc.) along property frontage or within the site must be
underground. The construction of these franchise utilities must be inspected and
approved by a City inspector. Electrical and gas service is provided by Puget Sound
Energy. Other utilizes such as phone and cable would be identified through the
building permit process.
EVALUATION FOR
AGENCY USE ONLY
SEPA Environmental Checklist – Elementary School #16
Page 52 Renton School District No. 403
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.
Reviewed by Renton School District No. 403
and Brent Planning Solutions
Signature:
Laura S. Brent, AICP
Environmental/Permitting Consultant for the RSD
Submitted to City of Renton: April 6, 2021
Date Finalized: ______________
SEPA Environmental Checklist
Elementary School #16
Appendix A Renton School District No. 403
Appendix A
Legal Description